How to install the hot water circulation pump?

Hot water circulating pump is a kind of hot water can make rapid arrival of electrical appliances, it does not have heating function, but the hot water pipe is pumped back to the two water heater cooling water, also known as gas water heater with circulating water, circulating pump water heater. Now small make up for everybody to introduce how to install the hot water circulation pump?
The installation of a water heater circulating pump is a pump return pipe connection, obtained in the case of a constant hot water, in most of the leading positions. The circulating pump must have a full path, full circle of hot water heater to close the exit tap as much as possible. The hot water circulation pump is used in the bathroom sink, kitchen sink, shower and bathtub faucet, which may require instant hot water.

1 turn off all the electrical appliances and the water pressure of the main water heater: this may need to close the main water home of the valve depends on the pipeline in their own living conditions. Cut into the hot water pipe from the water heater. You also need to cut in, fueling the hot water heater cold and hot water supply line. The one-way valve will be placed on the pipe, therefore, only the cold water flowing into the water heater and the circulating hot water can not flow out into the cold water line. .
How to install the hot water circulation pump?
2 provided with the connecting flange and the pump installed in a horizontal position: flange pump manufacturers to provide a threaded insert screw pump can then be connected to the existing pipeline flange bolts. According to the different hot water supply pipe diameter size also determines the appropriate accessories for the flange connection pipe. The flange will have a high temperature seal or O type ring, so that the waterproof connection. Generally due to the small size of the pump, it will not require any additional support for the water pipe to ensure that the unit.
3 most of the circulation pump must be running 24 hours a day, and need a dedicated dual socket to provide power supply: cut hot water just below the faucet connection line, into the sink area. The closer the distance from the tap, the faster the flow of hot water from the pump circuit. Water in the pipe joint is returned to a cold water pipe which is recycled back to the hot water tank.
4 the normal hot water pipeline circulating pump will move the hot water down to the sink, but must be the return path for water: This is the return line of the recycled water back to the water heater. All of the hot water circulating pump circuit is insulated from the foam insulation pipeline, which is the most important, hot water will quickly loose through the heat exposed to the pipe, and be moved or distributed.
Above is the introduction of the installation method of hot water circulating pump.

The number of years in stainless steel chemical pump momentum gradually fierce

In the past ten years or even decades, pump to take root in China, formed an industry and science, because the chemical enterprises rise, increasing the frequency of use of chemical pumps, unity is characterized in that the material or design structure to the advantages of transport of the chemical medium, and has strong corrosion resistance this kind of product can be unified, known as chemical pumps, the current market has stainless steel as the development object of promoting, so the stainless steel chemical pump currently in the chemical industry occupies a dominant position.
Stainless steel as a relatively common and obvious advantages of the material, in all aspects of our lives are playing an important role, corrosion resistance, abrasion resistance, durability and superior performance of the chemical pump become the preferred use of stainless steel materials, will be applied to the field of chemical pump is designated an inspired passage advantage, the stainless steel chemical the pump field, create a new pump, strong corrosion resistance, stable and reliable.
Therefore, in recent years, stainless steel chemical pump has been rapid development, has played an important role in various sectors of China's construction, especially the chemical industry, the market demand for stainless steel chemical pump is gradually warming, stainless steel chemical pump in China's market share accounted for more and more, its advantages are highlighted in continuous use, the quality is relatively light, long service life, good quality so that the repair rate is low, so the environmental benefit is soaring, the stainless steel chemical pump as many industry preferred.
But, despite the rising use of chemical pump in our country, in fact the single chemical pump does not form a unified and strong brand chain, the real strength of the brand, such as the Jiangsu spring type enterprise scanty liquid. Today's brand, fight quality, than the price, for service, Bo reputation. Only these four aspects can achieve excellent business, in order to truly become a big brand of people's favor. Jiangsu is a well-known spring liquid pump enterprises, the quality of its products and the effect of using stainless steel chemical pump launched obvious to people, and has brought a very big change, the future with the development of times and progress, the market is bound to have a greater demand for stainless steel chemical pump, withstand future tests, in order to truly stand an invincible position.

Introduction to the regulation method of mine submersible pump

Mine submersible pump is mainly used in coal mine, mine submersible pump used in D type, DA type and TSW type multistage centrifugal pump; and the sump area and local drainage is commonly used type B and type Ba and BZ type single-stage centrifugal pump. With the increase in the scope of use of mine submersible pump, how to adjust the work, which is a lot of people this question, the next will be described in detail:
Introduction to the regulation method of mine submersible pump
Introduction to the regulation method of mine submersible pump
1, can be achieved through the throttle valve:
That is to change the open degree of the mine pump water outlet, the small gate valve, the local resistance of the pipe increases, the pipeline system characteristic curve becomes steep, the pump device's working point will make the corresponding change, the water quantity decreases accordingly. When the valve is closed, the local resistance of the pipe is close to infinity, and the water is cut off. The throttle adjustment method is simple and easy to operate, and is very used in production.
2, by changing the motor speed to change the operating point of the pump device:
Facts have proved that the new technology, new materials, new technology applications, not only the liberation of labor productivity, but also to ensure product quality and stable and reliable. Our country is a big agricultural country, submersible pump as an agricultural water to the irrigation tool into every household. The application of submersible pump in China's industrial field is also increasing. Submersible pump technology in China is still in the development stage, the technology should be further improved.
Speed control operation is refers to the mine submersible pump in variable speed motor drive operation, along with the coal mine problems in the processing of its outstanding performance, more people pay attention to the use of this product in the real production. How to maximize the performance of its use value, the need for manufacturers and customers to do more work and research, as long as the direction of development in the right direction, mine submersible pump will be more beautiful tomorrow.

Principles and structure of hydraulic ejector

Principle and application:
Hydraulic ejector is a kind of mechanical device with three kinds of effective energy, such as vacuum pumping, condensation, drainage and so on. It is the use of a certain pressure of the water through the symmetry are distributed into a certain side slope of the spray. Polymerization in a focal point, because the jet speed is higher, they form a negative pressure around the room so have a vacuum device, also because the two steam jet flow with the direct contact heat exchange, most of the steam condenses into water, a small amount of uncondensed steam and non condensable gas due to friction with each other at high speed the spray water flow, mixing and extrusion, the diffuser is excluded, the formation of higher vacuum for indoor. Hydraulic ejector is widely used, mainly used in vacuum and evaporation system, vacuum pump, vacuum evaporation, vacuum filtration, vacuum crystallization, drying and deodorizing process, is sugar, pharmaceutical, chemical, food, salt, monosodium glutamate, milk, fermentation and some light industry, the defense department needs a wide range of equipment. Structure such as multi nozzle and steam ring (guiding plate). As well as with the multi-stage pump water, low installation, improve the performance of its work, so it has a certain advanced nature, is a vacuum condensation equipment innovation, welcomed by the user units around the welcome.
Principles and structure of hydraulic ejector
Structural advantage:
Hydraulic ejector is composed of a device body, cover, nozzle, nozzle base plate, guide plate, a diffuser and a one-way valve and other parts, stainless steel nozzle, injection nozzle seat board is processed by high quality steel, the other parts are cast iron, the nozzle structure with multi nozzle, so that get the larger water vapor contact area, is conducive to heat exchange, to obtain better effect of vacuum. Machining precision, high precision, so that the jet flow accurately gathered in the same focus. The guide plate is used to slow down the steam (or air) flow rate, the vapor chamber is evenly into the jet to avoid deviation, reduce the shot efficiency. The device has the advantages of compact structure precision, high strength, used for vacuum evaporation system, due to the pumping effect of combined in one device and greatly simplifies the process of condensation condenser and vacuum pump, vacuum pump and device for condenser of old than the original, can be saved to the vacuum pump, condenser and water separator equipment.
And there are the following advantages:
(1) the hydraulic jet is small in size, light in weight and compact in structure. And the efficiency is relatively high, power consumption is lower than the vacuum system, the province of investment.
(2) the operation is simple and easy to maintain, so it is not necessary to manage the full time personnel, so the noise is low and no need to consume the lubricating oil because it has no mechanical drive part.
(3) can be installed outside the floor, covers an area of less, you can save the construction area of the plant and installation costs.

Application and product characteristics of deep well submersible pump

One, QJ high lift deep well submersible pump uses
High lift submersible pump motor and pump direct one water pump into the water to work, the deep well pump is suitable for the extraction of groundwater from wells, can also be used in rivers, reservoirs, canals and other water projects: the submersible pump is mainly used for irrigation and water for people and livestock in mountainous areas, but also for the city, the factory, railway, mining, water supply and drainage site use.
Two, QJ high lift submersible pump is the product features
1, high lift submersible pump is a motor, pump, running into the water, safe and reliable.
Application and product characteristics of deep well submersible pump
2, high lift submersible pump for pumping well pipe, tube without special requirements (i.e.: steel tube wells, tube wells, Doi ash can be used; in the permit, pressure pipe, hose, plastic pipe can be used for lifting pipe use).
3, high lift submersible pump installation, convenient operation and maintenance is simple, small footprint, without the construction of pumping stations.
4, high lift submersible pump structure is simple, save raw materials.
High head submersible pump conditions are suitable, proper management and service life have a direct relationship.

Several factors affecting the efficiency of clear water pump

Several factors affecting the efficiency of clear water pump:
1 water pump itself is the most fundamental efficiency of the impact. Under the same working conditions of the pump, the efficiency may be a difference of more than 15%.
2 the running condition of the water pump is lower than the rated condition of the pump, the pump efficiency is low and the energy consumption is high.
3 motor efficiency in the use of basic remain unchanged. Therefore, it is important to choose a high efficiency motor.
4 the influence of the water pump efficiency is mainly related to the design and manufacture quality. Pump selected, the late management of small.
5 hydraulic loss, including hydraulic friction and local resistance loss. After running a certain period of time, the impeller and guide vanes inevitably lead to the surface abrasion, the hydraulic loss increases, the hydraulic efficiency is reduced.
6 water pump volume loss, also known as leakage losses, including the impeller seal ring, the class, the axial force balance between the three kinds of leakage loss. Volume efficiency is not only related to the design and manufacture, but also with the management of the late. After running for a certain period of time, due to the friction between the components, the gap increases, the volume efficiency decreases.
7 as the filter cylinder block, intake and other causes of pipeline centrifugal pump and idling.
Several factors affecting the efficiency of clear water pump
8 water pump before the start, the staff do not pay attention to the centrifugal pump start the preparatory work before the heating pump, plate pump, infusion pumps and other basic operating procedures are not complete, often caused by pump cavitation, causing the pump noise, vibration, low pump efficiency.
General water pump is designed to obtain the highest efficiency, that is, the hydraulic structure parameters of the water pump is the best combination of the highest efficiency. Other pumps, such as the special requirements of the pump its efficiency is not likely to exceed the same period of time the water pump efficiency. Other pump efficiency is lower than the main reason for the water pump is the widening of their flow channels. The value of the efficiency decrease is mainly related to the extent of the broadening. Other pump flow channels are widened to prevent obstruction.
IS, IH type water pump for conveying water or physical and chemical properties similar to the use of other liquid water, the temperature is not higher than 80. Main applications: suitable for Industry and city water supply and drainage, can also be used for agricultural irrigation. The design of the pump selection of domestic hydraulic model, the performance of IS type centrifugal pump parameters, ingenious combination of design in general vertical pump on the basis, and the use of temperature, medium in different ALG derived on the basis of the application of hot water, high temperature corrosion resistant chemical pump, oil pump. The series of products with high efficiency and energy saving, low noise, reliable performance and other advantages, in line with the latest National Machinery Department JB/T53058-93 standard requirements, the product according to the international ISO2858 standard design and manufacture. For the transport of water and physical and chemical properties similar to water and other liquids used, suitable for the industry and the city water supply and drainage, water pressure high-rise buildings, garden sprinkler, fire booster, long-distance transportation, HVAC refrigeration cycle, bathroom pressurization of cold and hot water circulation equipment, the use of temperature T<80.
The hot water pump is suitable for metallurgy, chemical, textile, wood processing, paper making, hotel, bathroom, hotel and other high-temperature hot water boilers and pressurized circulating pump for conveying city housing heating cycle, using a temperature below 120 DEG C.
High temperature water pumps are widely used in metallurgy, chemical industry, energy, textile, papermaking, hotel, bathroom, hotel and other high-temperature hot water boilers and pressurized circulating pump for conveying city housing heating cycle, using a temperature below 240 DEG C.
 

How to select the type of micro pump

Market there are many micro pump, micro liquid pump, small pump, pump, self priming pump, I see a dazzling, how to choose the model for me to use it?
Water pumps, especially micro pumps, the main parameters of the "flow", "pressure" or "head", whether the need for self absorption, etc.. Type selection according to the specific requirements to choose.
Simple pumping or liquid
Requirements: only need to pump or solution, must have the ability to suck, and the flow and output pressure is required. Description: the working medium is the pumping water, non oily liquid solution (not containing solid particles, etc.) have the function of self suction, you can choose one of the following: 1, pump large flow requirements (about 4 ~ 20 liters / min), pressure is not high (about 1 to 3 kilograms), mainly used for water circulation and water sampling and upgrading requirements, low noise, long service life, high self suction suction, optional BSP, CSP series; 2, traffic demand is not high (about 1 ~ 5 liters / min), but the pressure is larger (about 2 to 11 kilograms), mainly used for spraying, pressurization, the car does not require a long time to work in high pressure or large load, can choose ASP, HSP series; 3, tea table for pumping and spraying, the requirements of volume as small as possible, the traffic demand is small and the noise is small (about 0.1 ~ 3 liters / min), PHW, WKA, ASP and other optional series.
Two, water vapor mixing occasions
Requirements: the need for pumping water or gas, the value of volume, noise, continuous use of performance, and no one may be long-term monitoring, idling, dry transfer occasions (such as water smoked): water, dry dual-use requirements, not long-term damage to the pump; 24 hours of continuous operation; small size, low noise, but do not ask for flow and lift. 1, with a micro pump or vacuum pumping, but sometimes there will be liquid water into the pump chamber. 2, the requirements of the micro pump both pumping and pumping. 3, with a micro pump pumping, but sometimes there may be no water pump can be pumped in a dry turn state. Some traditional pumps fear dry turn, dry turn and even damage the pump. The PHW series is essentially a composite function of the pump, it integrates the function of the vacuum pump and pump, it is called a "vacuum pump"". Therefore, in the absence of water, it will be a vacuum, when there is water, it will pump. Whether pumping or pumping state, are in the normal work category, there is no so-called dry turn damage. 4, mainly using a micro pump, but do not want to rely on artificial pumping before "water" (some pump before work need to manually add some "diversion", so the pump to lower the water pumped, otherwise the pump can not be pumped or even damaged), that "pump has self-priming function. At this point, you can WKA, PHW series of products is the strength of the water, it is not exposed to the vacuum, the formation of a vacuum by pressure to the pressure to come up, and then began pumping. When there are more applications, you can choose PHW, WKA series.
Three, pure water or liquid, do not require self absorption capacity
Requirements: there is a large demand for traffic, medium containing a small amount of oil, solid particles, residues, etc.. Note: pumping medium, soft solid particles, 1 contains fewer and smaller diameter (such as fish waste, sewage sludge, residue, etc.), but the viscosity can not be too large, and it is best not to have a kind of hair entanglement. 2, allow the work medium containing a small amount of oil (such as a small amount of oil floating on the water), but not all of the oil! 3, large flow requirements, do not require self absorption features of the occasion. When there are more applications, you can choose FSP large flow series.

Selection and use of coaxial submersible pump

Coaxial submersible pump is a submersible pump impeller directly installed in the shaft extension of the motor, the pump body. It is characterized by compact structure, convenient installation, no need of a pump room, small occupied area, can realize remote control operation, safe and reliable, easy maintenance, short volume submersible pump. Can be used for drainage and rescue, surface drainage, city drainage, agricultural irrigation and drainage.
Conditions of use
1 the motor must be filled with clean water or other water solution prepared according to the regulations.
2 submersible pump should be completely submerged in the work.
3 water temperature is not higher than 20.
4 the content of solid impurities in water is not more than 0.01%.
5 water does not contain chemical substances, pH value between 6.5-8.5.
The coaxial submersible pump is composed of submersible motor, submersible pump, power cable, signal cable, joint material, gate valve, check valve, elbow and so on.
Submersible motor: for the water filled wet seal structure, generally vertical installation.
1 in accordance with the use of the case, some of the housing with cooling ribs and waterways, and fitted with water absorption, to facilitate the heat sink.
2 motor at the bottom of the elastic capsule, can automatically adjust the balance of internal and external pressure motor.
3 the motor adopts the mechanical seal box rubber oil seal, the stop mouth with the rubber "O" - shaped ring and sealant, with good sealing performance.
4 motor guide bearing and thrust bearing are selected for high strength and high strength wear resistant materials, good wear resistance, high bearing capacity.
Submersible pump: more than a single impeller, directly installed in the shaft of the motor shaft, impeller and guide the shell using wear-resistant high strength cast iron, can also be used in different requirements of the alloy or coating wear-resistant materials.
Control cabinet: with short circuit, overload protection, voltage protection and can be installed in accordance with the requirements of the water level monitoring device, temperature protection device.
Cable: Waterproof three core rubber soft cable, the length of 5 meters or according to the requirements of custom.

The application of submersible pump in the hydropower plant

In the auxiliary system of the hydropower plant, the main shaft seal start water solenoid valve control unit automatically open the boot seal water solenoid valve, solenoid valve and close the water stop seal; automatically boot off the sealing water solenoid valve, solenoid valve seal water stop open at the same time.
When the gas tank pressure is low, starting air compressor; start standby air compressor when the pressure is too low, an audible alarm and emergency air compressor and air storage tank low pressure fault signal; when the pressure is normal, the outage of air compressor and air compressor spare reset start signal; when the working machine failure, start standby air compressor and alarm.
When the gas tank pressure is too low or too high, the sound alarm and the pressure is too low or too high accident signal. Air compressor during operation, when the compressor lubricating oil pressure is high or low, sound alarm and medium pressure air compressor lubricating oil pressure abnormal signal. When the water leakage catchpit high, start working deep well pump; when the water leakage catchpit continues to rise too high water level, start the standby pump, when the pump continuous working time exceeds the set value, a water pump operation timeout alarm signal.
The control object and control function of each subsystem are different, but the control cabinet is the same as the control unit. The control cabinet is composed of a display unit, a control unit, a motor starting component, a power supply and an alarm component. The display part mainly has the photon sign, the indicator light. The control unit mainly has the PLC and the corresponding switch quantity input and output module, the analog quantity input and output module, the control relay and so on.

Submersible pump (deep well submersible pump) installation method

Submersible pump and installation:
Well with submersible pump (submersible pump) under general wells installed in two ways: one is the head is very low (generally less than 30m) of the submersible pump can be installed using the hose; and high lift (generally above 30m) the submersible pump should be used in pipe installation.

1, the use of hose under the installation
The submersible electric pump which is installed under the well of the soft pipe can be directly used for hoisting the rope (such as nylon rope, etc.) which can bear the full weight of the water in the submersible electric pump and the water pipe and the water pipe and the water pipe and the water pipe.
2, the use of steel pipe under the installation
The installation of the steel pipe under the well with submersible electric pump, the installation method as shown in fig..
1) with clamp wells with submersible pump  part of the Swiss, and the chain hoist, slowly, well, until the clamps our resting on the wellhead, remove the chain.
2) with another pay clamp of a connecting pipe, flange connecting pipe distance 15cm with chain hoist, slowly down. Connecting pipe to the blue and submersible pump flange gasket between the good rubber gasket, bolts, nuts and spring washers will be connected to the pipe flange and submersible electric pump flange evenly forced tightening.
3) the submersible pump slightly lifted, remove the clamp at the upper end of the submersible pump, and use plastic tape or cable to connect cable card will fasten the hose, slowly under the hoop firmly resting on the wellhead.
4) with the same method, all the water pipes connected to the submersible pump, and human wells.
5) the submersible pump out cable access control switch, and then connected three-phase power supply.

Introduction to the application of submersible pump

Submersible pump is a mechanical and electrical integration of high-tech products. In recent years, because of the submersible pump has made great progress in sealing, insulation, cooling and monitoring technology, but also successfully realized the automatic coupling of water pump and a water outlet pipe, so that the large diameter submersible pump application significantly faster. As the submersible pump station in saving investment, can quickly install and repair, operating conditions greatly improved, the reliability and service life of the equipment is significantly improved. At present, our country not only production and installation of large diameter 900mm under axial flow pump and mixed flow pump, also can produce large diameter 1.4m and 1.6m submersible electric pump, for submersible electric pump station to promote the technology to lay a good foundation. The submersible pump is not afraid of flooding, but also has quick removal and installation flexibility is good, able to cope with the water level soared, pump house flooded and other emergencies, large submersible pumps come out, make the pump structure, installation and operation environment changed revolutionary. Compared with the conventional pumping station, the advantages of submersible pump station in low-lying areas are more obvious. At the same time, and the submersible sewage pump and pump sediment and other pump types, can clear the drainage channel.
Advantages of submersible pump application
1 pump station is not afraid of flooding
In low-lying areas, the dike burst or coming torrential rain over the design standard, irrigation and drainage pumping station is often flooded. Once the pump station mechanical and electrical equipment is soaked in water, cleaning and baking and other repair work is very heavy, will delay the drainage time, increase disaster losses. Therefore, the conventional pumping station itself is also a very important problem of flood prevention and control of the problem. But the submersible electric pump is a submersible motor, pump unit can be run under the water. Therefore, even if the pumping station was flooded, as long as the motor is not overloaded, the pump can work in the stable area of submersible electric pump can be put into operation at any time. 2 unit assembly and disassembly fast
The submersible pump and the water outlet pipe is connected by bolts, mainly for pumping water, drainage and other small construction. But between the submersible pump and the water outlet pipe in modern times has achieved the automatic coupling in the outlet pipe is fixed, does not need the bolt can be fast installation and removal of the pump unit, thus greatly accelerating the speed of installation and maintenance unit. The main installation types of submersible electric pump are mobile and guide rail coupling two.
3 save pump station project investment
Pumping station project investment including civil investment and equipment investment. After the use of submersible electric pump, construction investment and equipment investment can be reduced.
(1) construction investment. Due to the following reasons, the construction investment of submersible pump station is 30% ~ 50% than that of conventional pumping station.
The submersible pump unit can run in the water, not afraid of wind and rain, the upper structure can save water;
The coaxial pump submersible pump, small axial size, lifting pump height is small, even if the need to build the superstructure, its height is lower than the conventional pumping station;
The need for standby unit pumping station, only spare submersible pump unit, without increasing the standby unit position, which can reduce the length of the pumping station;
The submersible pump does not need a water supply pump, drainage pump, vacuum pump, fan and other auxiliary equipment, hydraulic pump small size, simple structure.
(2) equipment investment. Due to the sealing, insulation, cooling and other requirements of the submersible pump, a variety of monitoring equipment in the unit is also more, so the cost of the submersible pump itself is usually higher than the conventional unit. But because the submersible pump can save a lot of auxiliary equipment, submersible pump station equipment investment is still below the conventional pumping station.
4 high reliability and long service life
Compared with conventional submersible pumps and pumping equipment, auxiliary equipment, submersible pump, it can not only simplify the operation procedure, is conducive to automation, and can greatly reduce the probability of failure, thus significantly improve the reliability of equipment. At the same time, because of the recent development of sealing, insulation, cooling and other technologies, the submersible pump is not prone to failure. Even if the seal leakage, temperature rise is too high, insulation decline and other phenomena, a variety of sensors will be in time to the signal, and control and protection, therefore, the submersible pump with high reliability.
In addition, the installation and disassembly of submersible pump is very convenient, in the non operation season can be lifted, greatly improving the unit management conditions, thereby prolonging the service life of long pump unit.

Submersible pump can use a flat

If it is a small submersible pump can also use but the service life will be reduced (such as the QDX single-phase submersible pump submersible pump), because the electronic weight of the rotor will tend to lie lower, there will be friction phenomenon, especially the submersible pump whenever you just a lie flat running submersible pump immediately damaged. Because of the deep well pump length of the impeller number more, but not the rotor will be damaged, the impeller will also have friction phenomenon. So a submersible pump can use the down answer is to use.

If the customer pool is relatively shallow, or the water level is relatively low, so customers can choose self suction pump for pumping liquid (such as ZX and ZW), if the customer has purchased the submersible pump, then we must remember not to lie, otherwise there will be unexpected.