How to choose the diaphragm pump? What is a diaphragm pump used for?

The following aspects need to be considered in the selection of diaphragm pumps:

Flow rate: The flow rate of the pump needs to be determined according to the needs of the use occasion, and it is generally recommended to choose a diaphragm pump that is slightly larger than the actual flow rate.

Head: Head refers to the ability of the pump to overcome the resistance of liquid flow, and the required head needs to be determined according to the height of the liquid to be conveyed and the length of the pipeline.

Temperature: The material and sealing method of the diaphragm pump are limited by the temperature, and the material and sealing method of the pump need to be determined according to the temperature of the liquid used.

Material properties: Diaphragm pumps are suitable for conveying all kinds of corrosive, high viscosity, volatile, particle, high temperature or flammable and explosive media, and the material and structure of the pump need to be determined according to the characteristics of the conveyed materials.

Noise and vibration: Diaphragm pumps with low noise and vibration need to be selected according to the requirements of the use environment.

Maintenance and maintenance: It is necessary to consider the brand and model of diaphragm pump according to the difficulty of maintenance, accessories** and other factors.

It should be noted that the above factors should be considered comprehensively according to the actual needs when selecting the model, and the diaphragm pump with high cost performance and reliable quality should be selected. At the same time, attention should also be paid to the technical support and after-sales service provided by the manufacturer to ensure the stable operation and safety of the diaphragm pump.

The following aspects need to be considered in the selection of diaphragm pumps:

1.Flow rate and head: According to the need to convey the medium flow rate and head, choose the appropriate diaphragm pump model. Generally speaking, diaphragm pumps have a wide range of flow rates, and different flow rates and heads can be selected according to needs.

2.Medium properties: Diaphragm pumps are suitable for conveying various corrosive, viscous and particle-containing media, but different media have different requirements for the material and structure of the pump.

Therefore, it is necessary to consider the chemical properties, temperature, viscosity, particle size and other factors of the medium to select the appropriate material and structure.

3.Working conditions: The working conditions of the diaphragm pump include temperature, pressure, environment and other factors, and it is necessary to select the appropriate pump type according to the actual situation. For example, diaphragm pumps operating in high-temperature, high-pressure, and corrosive environments need to choose materials and structures that are resistant to high temperatures and corrosion.

4.Operation requirements: The operation requirements of diaphragm pumps include noise, vibration, maintenance, etc., and it is necessary to select the appropriate pump type according to the actual situation. For example, where noise and vibration requirements are low, a low-noise, low-vibration diaphragm pump needs to be selected.

5.Economy: The selection of diaphragm pump also needs to consider economy, including pump quality, maintenance costs, energy consumption and other factors. It is necessary to choose an economical and practical diaphragm pump on the premise of meeting the process requirements.

To sum up, the selection of diaphragm pump needs to comprehensively consider the properties of the medium, working conditions, operating requirements, economy and other factors to select the appropriate pump type.

Hello, there are many types of diaphragm pumps, and the uses of each type of isolation pump are not the same, just like the diaphragm pump of the Amazon pump industry has pneumatic isolation pumps and electric isolation pumps, electric isolation pumps are mainly used in petrochemical, ceramic, metallurgical and other industries, and pneumatic isolation pumps are divided into stainless steel pneumatic diaphragm pumps, aluminum alloy pneumatic diaphragm pumps, etc., and the uses are different.

The diaphragm pump of Shanghai Juxin Pump Industry is good, you can go and see if you need it.

Diaphragm pump advantages:

It can be used to convey fluids with relatively unstable chemical properties

2. In the handling of hazardous and corrosive materialsDiaphragm pumps completely isolate the material from the outside world

3. The diaphragm pump is small in size and easy to move, does not need a foundation, occupies a very small ground, and is easy and economical to installIt can be used as a mobile material transfer pump

Diaphragm pump disadvantages:

The pressure cannot be raised, limited by the air pressure, 6 bar reaches the upper limit;

Noise and piping vibration, which is especially noticeable in atmospheric quantities;

3. Relative to the screw pumpThe diaphragm has a short life and is easily damaged

4. Because the flow rate of the diaphragm pump is usually not too largeMost of them are used in small systems

Causes and treatment methods of common faults of diaphragm pumps:

1. Causes and treatment methods of insufficient flow of diaphragm pumps.

a. Leakage of feed and discharge valve; Overhaul or replace the feed valve.

b. Diaphragm damage; Replace the diaphragm.

c. The speed is too slow and the adjustment fails; Access control devices and adjust speeds.

2. The cause and treatment method of the failure of the diaphragm pump with insufficient or elevated pressure.

a. Improper adjustment of the pressure regulating valve of the pneumatic diaphragm pump; Adjust the pressure valve to the required pressure;

b. Failure of pressure regulating valve; wide adjustment of overhaul pressure;

c. Pressure gauge; Overhaul or replace the pressure gauge.

3. The cause and treatment method of the diaphragm pump pressure drop.

a. Insufficient oil supply of the oil filling valve; repair of oil valves;

b. Insufficient feeding or leakage of feeding valve; Overhaul the feeding situation and the feeding valve;

c. Oil leakage from plunger seal; overhaul of the sealing part;

d. The oil level of the oil storage tank is too low; Fill with new oil;

e. Leakage of the pump body or damage to the diaphragm; Check to replace the gasket or diaphragm.

4. Causes and treatment methods of oil leakage failure of diaphragm pump.

a. The gasket and sealing ring are damaged or too loose; Adjust or replace gaskets and gaskets.

Pros:1There is no need for irrigation and diversion, and the suction stroke is up to 7m, and the head is up to 70m;

2.Low shear, good passing performance, can pump particles, viscous liquid;

3.Adjustable, head, flow, can be adjusted by air pressure;

4.Explosion-proof, can be used in flammable and explosive places;

5.It can be submerged in the medium to work;

6.It can be dry suction and idling;

7.The structure is simple and there are few wearing parts. The pump structure is simple, easy to install and maintain;

Disadvantages: the flow rate is 1-60 tons, which is smaller than that of traditional pumps;

There is a pulse at the outlet;

The outlet pressure cannot be greater than kilograms;

Advantages of diaphragm pump: 1. Compressed air driven, explosion-proof, no electric spark; 2. Strong self-priming ability, dry suction up to meters, wet suction up to meters; 3. Easy maintenance, less wearing parts; 4. It can withstand back pressure, can dry suction, and does not damage the pneumatic diaphragm pump; 5. Pneumatic diaphragm pumps with different materials and different diaphragms can be selected according to different working conditions;

Disadvantages: The fluid outlet is pulsed (which can be eliminated by adding a damper).

Diaphragm pumps, electric and pneumatic. The disadvantages of pneumatics are pulses (plus pulse dampers), and most of the diaphragm life is not long (choose a good manufacturer).

Electric disadvantages: The discharge port cannot hold pressure (with a safety valve).

The outlet pressure of the diaphragm pump is not large, and it is maximum.

Both can be used to convey liquid media containing small amounts of small particles. The membrane pump has no leakage, but the pressure is relatively low (i.e., discharge pressure); The ceramic piston pump has a small amount of leakage, but the outlet pressure can reach 50MPa The structure of the membrane pump is more complicated, and the structure of the ceramic piston pump is simple, but the cost of spare parts is high.

(2) "The Stone of the Fat Benhui School", Zheng Qingshan School, 120 times, published by Writers Publishing House in 2003;

1. The characteristics of the diaphragm pump: 1. No shaft seal, no leakage, and spacious flow channel, so the transportation contains particles, high viscosity and viscosity can reach 10,000 centipoise, and when volatile and corrosive media are emitted, it will not cause environmental pollution and endanger personal safety. 2. No rotating parts, good passing performance.

Diaphragm pump is a new type of conveying machinery, which can convey all kinds of corrosive liquids, liquids with particles, high viscosity, volatile, flammable and highly toxic liquids. Diaphragm pumps are available in four materials: plastic, aluminum, cast iron, and stainless steel.

The diaphragm pump is made of nitrile rubber, neoprene, fluoroelastomer, PTFE and PTFE according to different liquid media. to meet the needs of different users. It is placed in various special occasions and used to pump a kind of medium that cannot be pumped by conventional pumps, and satisfactory results have been obtained.

Diaphragm pumps have occupied an absolute dominant position in the painting and ceramic industries, and the advantages of air-operated diaphragm pumps are:

1. Because it is powered by air, the flow rate is automatically adjusted with the change of back pressure (outlet resistance), which is suitable for medium and high viscosity fluids. The working point of the centrifugal pump is set based on water, if it is used for a slightly higher viscosity fluid, it needs to be equipped with a reducer or frequency conversion governor, and the cost is greatly increased, and the same is true for gear pumps.

2. Pneumatic pumps are reliable and low cost in flammable and explosive environments, such as the transportation of fuel, gunpowder and explosives.

1. It is impossible to produce sparks after grounding; Clause.

2. There is no heat generation in the work, and the machine will not overheat; Clause.

3. The fluid will not overheat because the diaphragm pump has minimal agitation of the fluid.

3. In the harsh places of the construction site, such as the wastewater discharge of construction sites and industrial mines, due to the many impurities in the sewage and the complex composition, the pipeline is easy to be blocked, so that the load on the electric pump is too high, and the motor is easy to heat up. The air-operated diaphragm pump can pass through particles and the flow rate is adjustable, and it automatically stops to unobstructed when the pipeline is blocked.

4. It can be used to transport fluids with relatively unstable chemical properties, such as photosensitive materials, flocculants, etc. This is because the diaphragm pump has a low shear force and has little physical impact on the material.

5. In the handling of hazardous and corrosive materials, the diaphragm pump can completely isolate the material from the outside world.

6. Or in some tests, it is guaranteed that there are no impurities to pollute the raw materials.

In addition, the diaphragm pump is small and easy to move, does not require a foundation, occupies a very small ground, and is easy and economical to install. It can be used as a mobile material transfer pump

Advantages of diaphragm pump: 1. Compressed air driven, explosion-proof, no electric spark; 2. Strong self-priming ability, dry suction up to meters, wet suction up to meters; 3. Easy maintenance, less wearing parts; 4. It can withstand back pressure, can dry suction, and does not damage the pneumatic diaphragm pump; 5. Pneumatic diaphragm pumps with different materials and different diaphragms can be selected according to different working conditions;

Disadvantages: The fluid outlet is pulsed (which can be eliminated by adding a damper).

Diaphragm pumps, also known as control pumps, are the main type of actuators, which change the fluid flow with the help of dynamic operation by receiving the control signal output by the regulating control unit. The function of the diaphragm pump in process control is to accept the control signal of the regulator or computer, change the flow rate of the medium to be adjusted, and maintain the parameters to be adjusted within the required range, so as to achieve the automation of the production process. If the automatic adjustment system is compared with the manual adjustment process, the detection unit is the human eye, the adjustment control unit is the human brain, then the execution unit - the diaphragm pump is the human hand and foot.

Diaphragm pumps are indispensable for the regulation and control of certain parameters of the process, such as temperature, pressure, flow rate, liquid level, etc.

There are four commonly used materials for air-operated diaphragm pumps: plastic, aluminum alloy, cast iron, stainless steel, and Teflon. The electric diaphragm pump is available in four materials:

Plastic, aluminum alloy, cast iron, stainless steel. The diaphragm pump diaphragm is made of nitrile rubber, neoprene, fluoroelastomer, PTFE and PTFE according to different liquid media to meet the needs. It is placed in various special occasions and is used to pump various media.

To put it simply, a diaphragm pump is a chemical pump that uses compressed air as the power to transport high viscosity, high abrasion and other acid and alkali fluids and solvents with explosion-proof, excellent sealing, no shear force, high outlet pressure and can be self-priming.

Diaphragm pumps, also known as control pumps, are the main type of actuators, which change the fluid flow rate by receiving the control signal output from the modulation unit and using power operation. Diaphragm pumps generally consist of actuators and valves. Using compressed air as the power source, it can be used to absorb all kinds of corrosive liquids, liquids with particles, and high-viscosity, volatile, flammable and highly toxic liquids.

Hello, the diaphragm pump is a semi-circular shape with two membranes on the left and right, mainly powered by compressed gas, and the compressed gas enters to drive the air motor, so that the left and right diaphragm actions are used to transport liquids, good luck.

1. Shanghai Shenquan Pump Industry.

Shanghai Shenquan Pump & Valve Manufacturing Co., Ltd. is a manufacturer specializing in the production and sales of pipeline pumps, sewage pumps, fire pumps, chemical pumps and other water supply and drainage equipment, whose products involve industrial and mining enterprises, agriculture, urban water supply, petrochemical industry, power station, shipbuilding, metallurgy, high-rise buildings, fire water supply, industrial water treatment and pure water, food, pharmaceutical, boiler, air conditioning circulation system and other industries.

2. Jiangcheng pump industry.

Jiangcheng Pump Branch Stool Industry is headquartered in the beautiful northern suburbs of Beijing, the birthplace of Liangzhu culture. The company is the deputy leader of the National Magnetic Pump Professional Committee and one of the drafters of a number of magnetic pump standards. The coal-water slurry magnetic pump produced by the company has obtained a number of national patents.

3. Excellent pump industry.

Excellence Pump Industry is a high-tech enterprise recognized by the national digging debater, specializing in the research and development, production and sales of magnetic pumps and rotary lobe pumps and related products, and is one of the domestic single magnetic pump industry standard formulation units. The main products include: single magnetic pump, double magnetic pump, rotary lobe pump.

4. Hengli pump industry.

Hengli Pump Industry is the birthplace of China's first oil gear pump. Hengli Pump Industry is a national second-level enterprise focusing on R&D and manufacturing of "Hengli" brand volumetric pumps, a key backbone enterprise in Zhongtong pump industry, a national high-tech enterprise, and a famous brand product enterprise in Hebei Province.

5. Liangtian pump industry.

Liangtian Pump Industry completed the shareholding system transformation in 2000. The company is responsible for the Liangtian water pump"The brand is old and has a good reputation"The existing mission is to reload, forge ahead, always adhere to the quality of its own products and enrich and continuously improve its own product line, the existing products have covered all aspects of water supply and drainage, general industry.

6. Yulian pump industry.

Yulian Pump Industry was established in 1958, and began to develop and produce petroleum magnetic pumps, screw drilling tools and other products in 1990.

7. Xunfeng pump industry.

With a history of nearly 40 years, Xunfeng Pump Industry was successfully transformed in 2002, and is an enterprise that works closely with scientific research institutes, is guided by advanced technology and based on the production equipment of scientific research enterprises. The production of three magnetic pumps, asphalt pumps in petroleum, highway asphalt, chemical, electric power and other industrial sectors have been widely used.

8. Shuanglu water pump.

Shuanglu Water Pump is an enterprise specializing in the research, design, manufacture and service of fluid equipment. The main products are magnetic pumps and other pump products, valves, motors, complete sets of water supply equipment series, which are widely used in municipal, water conservancy, construction, fire protection, electric power, environmental protection, petroleum, chemical, mining and pharmaceutical industries.

9. Huangshan Pump Industry.

Huangshan Pump Manufacturing Co., Ltd. mainly provides three categories of products: single magnetic pump, double magnetic pump and triple magnetic pump, and creates a professional brand of "yellow pump" and "RSP" magnetic pump. It has industry-leading technology research and development capabilities.

10. Shenyang Water Pump Factory was founded in 1932 and is the largest manufacturer in China's pump industry.