Countries, China's pump industry is still relatively backward. But the person pointed out that the domestic economic development is very rapid, but the supply of water and electricity in many factors under the influence of a serious shortage of water pumps and generators market space is still great. China's pump industry could use the advantage to achieve integrated development.
Although, suffered the impact of raw materials, but the pump industry has maintained a relatively stable demand and development, annual growth rate remained at around 13%. The reason is mainly the increasing improvement of urban infrastructure to a large extent contributed to the water pump industry to enter the sales peak. And together with the national implementation of stimulating domestic demand increasing, many places for agricultural water pumps also subsidies, all of these water and construction of electrical engineering project promoted the development of the pump industry, the pump industry has been a development opportunity.
Although the domestic pump industry has made considerable progress, but there are still a lot of problems. Market order; product structure is not complete, the low-end market products oversupply; relatively low levels of enterprise technology, independent research and development of independent innovation ability of these problems largely hindered the healthy development of the pump industry.
Water pump industry market competition has intensified so many vendors realize that technical level, quality, price and service will become one of the important factors of competition in a certain period of time. As pump vendors to the quality of service, good quality to win the market.
20 years of reform and opening up, China's pump industry in terms of size, strength, science and technology, talent and other aspects of a very large development, to provide economic and technological basis for the development of technology. China's pump industry has the ability to achieve integrated development, but also the only way in order to continue to narrow the gap in developed countries to catch up or exceed the foreign advanced level.
2016年11月15日星期二
What is the jywq?
We will meet the sewage inside the bottom of the precipitation of impurities in the choice of sewage pump, then meet this situation we should choose jywq. Jywq comes together when disc, disc speed can stir the precipitation at the bottom of the sewage together with impurities play together.
First to know about jywq:
Jywq main features
1 when the sewage pump operation, automatic mixing tank bottom sediments, completely prevent dirt accumulation, no need to manually clean up;
2 unique impeller design, with the fibers, debris chopped and tear function;
3 by using external circulation cooling system, so that the sewage pump low water level operation, reduce the motor start frequency, extend the motor life;
4 municipal engineering, construction site.
5 exploration, mining, power plant auxiliary machine
6 biogas digesters in rural areas, irrigation ponds, clear edit this paragraph jywq
What is the jywq?
Jywq main purpose
1 factories and commercial heavily polluted wastewater discharge.
2 urban sewage treatment plants, hospitals, hotels drainage system.
3 residential sewage drainage station.
Water supply device for water supply plant of 4 drainage station and water supply plant of civil air defense system.
5 municipal engineering, construction site.
6 exploration, mining, power plant auxiliary machine.
7 biogas digesters in rural areas, farmland irrigation, dredginghetang.
The above is jywq characteristics and applicable scope, according to the above basic introduction to understand the basic situation of the water pump, customers can choose according to the actual parameters.
First to know about jywq:
Jywq main features
1 when the sewage pump operation, automatic mixing tank bottom sediments, completely prevent dirt accumulation, no need to manually clean up;
2 unique impeller design, with the fibers, debris chopped and tear function;
3 by using external circulation cooling system, so that the sewage pump low water level operation, reduce the motor start frequency, extend the motor life;
4 municipal engineering, construction site.
5 exploration, mining, power plant auxiliary machine
6 biogas digesters in rural areas, irrigation ponds, clear edit this paragraph jywq
What is the jywq?
Jywq main purpose
1 factories and commercial heavily polluted wastewater discharge.
2 urban sewage treatment plants, hospitals, hotels drainage system.
3 residential sewage drainage station.
Water supply device for water supply plant of 4 drainage station and water supply plant of civil air defense system.
5 municipal engineering, construction site.
6 exploration, mining, power plant auxiliary machine.
7 biogas digesters in rural areas, farmland irrigation, dredginghetang.
The above is jywq characteristics and applicable scope, according to the above basic introduction to understand the basic situation of the water pump, customers can choose according to the actual parameters.
2016年11月13日星期日
Definition and classification of mixed flow pump
Under the action of centrifugal force and axial force, the mixed flow pump is a kind of centrifugal pump, which belongs to a kind of centrifugal pump and axial flow pump. Mixed flow pump is a kind of "pull" type structure of the pump, in the inspection and removal of impeller and shaft seal, without the pipeline connected with the pump body apart. The pump shaft is equipped with precision machining, with thin oil lubrication bearing, shaft sleeve is arranged in the stuffing box cover. Oil bearing box, a constant level oiler to control. When the mixed flow pump impeller in the water rotation, the blades of the centrifugal force, but also has the lifting effect, the impeller rotation by the mixing of the two kinds of action, so called mixed flow pump.
Working principle of mixed flow pump:
When the prime mover drives the impeller to rotate, the action of the liquid is both centrifugal force and axial thrust, which is integrated with the centrifugal pump and axial flow pump, and the liquid is inclined to flow out of the impeller. So it is a kind of pump between the centrifugal pump and axial flow pump. Mixed flow pump than the speed higher than the centrifugal pump, lower than the axial flow pump, generally between 300-500. Its head is higher than the axial flow pump, but the flow rate is smaller than the axial flow pump, larger than the centrifugal pump.
Classification of mixed flow pumps:
1, according to the inspection and disassembly form can be divided into: can draw out type mixed flow pump and can not draw out type mixed flow pump;
2, press the water chamber type can be divided into: vane type mixed flow pump and the vortex shell type mixed flow pump;
3, according to the blade adjustment type can be divided into: fixed mixed flow pump, semi adjustable mixed flow pump and fully adjustable mixed flow pump.
Working principle of mixed flow pump:
When the prime mover drives the impeller to rotate, the action of the liquid is both centrifugal force and axial thrust, which is integrated with the centrifugal pump and axial flow pump, and the liquid is inclined to flow out of the impeller. So it is a kind of pump between the centrifugal pump and axial flow pump. Mixed flow pump than the speed higher than the centrifugal pump, lower than the axial flow pump, generally between 300-500. Its head is higher than the axial flow pump, but the flow rate is smaller than the axial flow pump, larger than the centrifugal pump.
Classification of mixed flow pumps:
1, according to the inspection and disassembly form can be divided into: can draw out type mixed flow pump and can not draw out type mixed flow pump;
2, press the water chamber type can be divided into: vane type mixed flow pump and the vortex shell type mixed flow pump;
3, according to the blade adjustment type can be divided into: fixed mixed flow pump, semi adjustable mixed flow pump and fully adjustable mixed flow pump.
Analysis of pump type selection
Convenient pipe installation, can be widely used for general pipeline pump for high-rise building pressurized water use, and can transport particles containing fiber wastewater, except for conveying the sewage, but also suitable for drainage pump, filter cleaning condensate pump etc.. Enterprise unit wastewater discharge. Urban sewage treatment plant discharge system. Subway, underground room, air defense system drainage station. The hospitals, hotels, high-rise building sewage discharge. The residentialsewagepumping station. The municipal engineering construction site in the mud, dilute emissions. Water supply device, tap water factory. The farms and rural sewage irrigation. To exploration and mining equipment for water treatment. The place of the shoulder arm, pumping mud. The use condition of water temperature is less than or equal to 60 DEG C, the liquid pH value of 4 ~ 10.
The unique leaf or double blade impeller structure, greatly improve the through capacity of sewage, which can effectively through 5 times of pump diameter and pump diameter solid particles 50%.
Mechanical seal using a new type of hard corrosion-resistant tungsten carbide material, while the seal is improved to double end seal, so that it is in the oil chamber for a long time to run, can make the pump safe and continuous operation for more than 8000 hours.
The compact structure, small volume, low noise, energy saving effect, convenient maintenance, no need of pump room, dive into the water to work, greatly reduce the project cost.
The sealing oil pump is arranged inside the Water Leakage high-precision interference detection sensors, and embedded within the stator windings of the thermal components, the absolute protection of the pump motor.
And according to user needs can be equipped with automatic safety protection control cabinet for the pump Water Leakage, leakage, overload and over temperature of absolute protection, improve the safety and reliability of the product.
The float switch solution based on the required changes, automatic control of pump start and stop, without special care, it is very convenient to use.
And according to user needs with double rail automatic coupling installation system, which brings great convenience to installation and maintenance, this may not enter the sewage pit.
It can be used in the whole range of lift, while the motor is not overloaded.
We have two different installation methods, fixed automatic coupling installation system, mobile free installation system.
Pipeline sewage pump installation technology is the key to determine the installation height of the pipeline sewage pump is the suction process. The height is the vertical distance from the water surface to the center line of the centrifugal pump impeller, it allows suction confused on a high vacuum, high vacuum suction on the vacuum pump inlet section refers to the value of the pump product specifications or nameplate allowed, and in 1 the standard atmospheric pressure, water temperature of 20 DEG C case the determination to test. It does not take into account the current situation of water after the water pipe. The pump installation height should be allowed to suck up the vacuum after deducting the suction pipe loss head, the remaining part of the value, it is to overcome the actual height of water absorption.
Pump installation height can not exceed the calculated value, otherwise, the centrifugal pump will not be pumped to the Sheung shui. In addition, the calculated values affect the size of the resistance water pipe head loss, therefore, should adopt the shortest piping layout, and minimize the elbow and other parts, can also be appropriately equipped with larger diameter pipe to reduce the flow tube.
It should be noted that the elevation of the installation site and water temperature of the sewage pump installation site is different from the test conditions, such as local elevation more than 300 meters or more than 20 of the water temperature is pumped, the calculated value to be modified. Atmospheric pressure at different altitudes and the saturation vapor pressure at temperatures above 20 c.. However, when the water temperature is below 20 degrees Celsius, the saturated vapor pressure is negligible.
From Li Shen pipeline sewage pump installation technology, suction pipes require stringent tightness, can not leak, Water Leakage, otherwise it will damage at the pump inlet vacuum, pump out the water, even when serious pumping Sheung shui. Therefore, to do a good job in the pipeline interface, to ensure the quality of the construction of the pipeline connection.
The unique leaf or double blade impeller structure, greatly improve the through capacity of sewage, which can effectively through 5 times of pump diameter and pump diameter solid particles 50%.
Mechanical seal using a new type of hard corrosion-resistant tungsten carbide material, while the seal is improved to double end seal, so that it is in the oil chamber for a long time to run, can make the pump safe and continuous operation for more than 8000 hours.
The compact structure, small volume, low noise, energy saving effect, convenient maintenance, no need of pump room, dive into the water to work, greatly reduce the project cost.
The sealing oil pump is arranged inside the Water Leakage high-precision interference detection sensors, and embedded within the stator windings of the thermal components, the absolute protection of the pump motor.
And according to user needs can be equipped with automatic safety protection control cabinet for the pump Water Leakage, leakage, overload and over temperature of absolute protection, improve the safety and reliability of the product.
The float switch solution based on the required changes, automatic control of pump start and stop, without special care, it is very convenient to use.
And according to user needs with double rail automatic coupling installation system, which brings great convenience to installation and maintenance, this may not enter the sewage pit.
It can be used in the whole range of lift, while the motor is not overloaded.
We have two different installation methods, fixed automatic coupling installation system, mobile free installation system.
Pipeline sewage pump installation technology is the key to determine the installation height of the pipeline sewage pump is the suction process. The height is the vertical distance from the water surface to the center line of the centrifugal pump impeller, it allows suction confused on a high vacuum, high vacuum suction on the vacuum pump inlet section refers to the value of the pump product specifications or nameplate allowed, and in 1 the standard atmospheric pressure, water temperature of 20 DEG C case the determination to test. It does not take into account the current situation of water after the water pipe. The pump installation height should be allowed to suck up the vacuum after deducting the suction pipe loss head, the remaining part of the value, it is to overcome the actual height of water absorption.
Pump installation height can not exceed the calculated value, otherwise, the centrifugal pump will not be pumped to the Sheung shui. In addition, the calculated values affect the size of the resistance water pipe head loss, therefore, should adopt the shortest piping layout, and minimize the elbow and other parts, can also be appropriately equipped with larger diameter pipe to reduce the flow tube.
It should be noted that the elevation of the installation site and water temperature of the sewage pump installation site is different from the test conditions, such as local elevation more than 300 meters or more than 20 of the water temperature is pumped, the calculated value to be modified. Atmospheric pressure at different altitudes and the saturation vapor pressure at temperatures above 20 c.. However, when the water temperature is below 20 degrees Celsius, the saturated vapor pressure is negligible.
From Li Shen pipeline sewage pump installation technology, suction pipes require stringent tightness, can not leak, Water Leakage, otherwise it will damage at the pump inlet vacuum, pump out the water, even when serious pumping Sheung shui. Therefore, to do a good job in the pipeline interface, to ensure the quality of the construction of the pipeline connection.
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