CN216767884U - Device for solving air-bound effect of water pump - Google Patents
Device for solving air-bound effect of water pump Download PDFInfo
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- CN216767884U CN216767884U CN202123417490.XU CN202123417490U CN216767884U CN 216767884 U CN216767884 U CN 216767884U CN 202123417490 U CN202123417490 U CN 202123417490U CN 216767884 U CN216767884 U CN 216767884U
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Abstract
The utility model provides a device for solving the air-bound effect of a water pump, wherein a water inlet end of the water pump is connected with a water storage tank, the upper part of the water storage tank is connected with a suction pipe, the lower part of the water storage tank is connected with an inlet of the water pump, and the water storage tank is filled with water in an initial state. The utility model applies the scientific principle of an ideal gas state equation, the water in the water storage tank is sucked into the water pump to be discharged after the water pump is started, the water level is reduced, the air pressure in the water storage tank is inevitably reduced due to the increase of the volume of the cavity of the water storage tank, when the air pressure is reduced to P0-rhogh, the water is sucked into the water storage tank, the water level is not reduced any more, and the water pump enters a normal working state. When the water pump stops working, water in the lift pipe flows back, the water level of the water storage tank rises, and air in the tank is discharged until the water level in the tank returns to the original water level. So that no air-lock effect is produced even if the bottom valve is not used.
Description
Technical Field
The utility model belongs to the technical field of hydraulic engineering, and particularly relates to a device for solving the air-bound effect of a water pump.
Background
Water for enterprises is generally taken from rivers through a centrifugal water pump, and the working mechanism of the centrifugal water pump is as follows: the water pump and the suction pipe are filled with water, the water pump and the air in the suction pipe are exhausted, then the motor is started, the pump shaft drives the impeller to rotate at a high speed, and the water is thrown to the outer edge of the impeller under the action of centrifugal force and flows into a water pressing pipeline of the water pump through a flow channel of the volute pump shell. At the center of the impeller of the water pump, because the water is thrown out under the action of centrifugal force to form vacuum, the water in the water suction pool is pressed into the pump shell under the action of atmospheric pressure, and the impeller continuously rotates, so that the water is continuously sucked and flows out under the action of the impeller, and the purpose of conveying the water is achieved. If the centrifugal pump is not filled with water to exhaust air before starting, the water pump cannot work normally because the air density is low, and the centrifugal force generated after the impeller rotates is small and is not enough to form vacuum negative pressure for sucking liquid in the central area of the impeller, so that the water pump can not convey liquid even if the centrifugal pump is started and idles. This indicates that the centrifugal pump has no self-priming capability, a phenomenon known as air-binding effect.
In order to solve the air-bound phenomenon, the following two modes are adopted in the market at present:
1. installing a one-way sealing bottom valve: if the water pump is installed at a position higher than the horizontal plane, a one-way sealing bottom valve can be installed at the tail end of the suction pipe, and when the water pump stops running, the one-way sealing bottom valve is closed under the action of the gravity of water to prevent water leakage, so that the water pump can be always filled with water. This approach is common.
2. Building an underground pump station: through building underground pumping station, make the water pump mounted position be less than the horizontal plane, can guarantee like this and fill water in the water pump all the time, but this kind of mode does not have purification treatment's river and has more impurity, soaks in water for a long time, and the bottom valve component produces scale deposit and corrosion easily.
The sealing performance of the bottom valve is easily damaged when the one-way sealing bottom valve is installed, or the bottom valve is not tightly closed due to the fact that the bottom valve is sucked in particle impurities, once the bottom valve slightly leaks, air can enter the water pump, an air-bound effect is formed, and the water pump also loses the water taking function. And an underground pump station is built, so that the investment is large.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a device for solving the air-bound problem.
The utility model is realized by the following technical scheme:
the utility model provides a solve water pump air and tie up device of effect, is connected with the water storage tank at the end of intaking of water pump, and wherein the suction pipe is connected on the upper portion of water storage tank, and the sub-unit connection water pump entry of water storage tank, and water storage tank initial state fills water under.
As a further scheme, a water filling port is arranged on the water storage tank, and a plug is connected to the water filling port.
As a further scheme, a dredging opening is formed in the bottom of the water storage tank, and a plug is connected to the dredging opening.
As a further scheme, a filter screen is arranged at the inlet of the water pump in the water storage tank, and the installation position of the filter screen is higher than the bottom of the water storage tank, so that the water storage tank is provided with a space for storing sludge.
As a further scheme, the installation position of the filter screen corresponds to the installation position of a suction pipe on the water storage tank, and when the water pump pumps water, the water sucked from the suction pipe can flush the filter screen.
As a further scheme, the filter screen is made of stainless steel.
The utility model has the beneficial effects that: the utility model uses ideal gas state equation PV/T as C (constant) scientific principle, and designs a third method on the basis of two methods of the background technology, after the water pump is started, the water in the water storage tank is sucked into the water pump to be discharged, the water level is reduced, the air pressure in the water storage tank is necessarily reduced because the cavity volume of the water storage tank is increased, when the air pressure is reduced to P0-rho gh (rho is liquid density), the water is sucked into the water storage tank, the water level is not reduced, and the water pump enters into a normal working state. When the water pump stops working, water in the lift pipe flows back, the water level of the water storage tank rises, and air in the tank is discharged until the water level in the tank returns to the original water level. So that no air-lock effect is produced even if the bottom valve is not used.
Drawings
FIG. 1 is a state diagram of the water pump of the present invention during shutdown;
FIG. 2 is a state diagram of the water pump of the present invention during normal operation;
fig. 3 is a schematic structural view of a water storage tank according to the present invention.
Detailed Description
The present invention will be further described with reference to the following examples.
Examples
As shown in figures 1-3, the device for solving the air-bound effect of the water pump 1 is characterized in that the water inlet end of the water pump 1 is connected with a water storage tank 2, wherein the upper part of the water storage tank 2 is connected with a suction pipe 3, the lower part of the water storage tank 2 is connected with an inlet of the water pump 1, and the water storage tank 2 is filled with water in the initial state. In this embodiment, it is assumed that the height difference from the water surface to the inlet of the water storage tank 2 is h, the volume of the suction pipe 3 is V1, the volume of the cavity in the water storage tank 2 is V2 when the water storage tank is at the highest water level, the air pressure in the water storage tank is P1 (initially equal to the standard atmospheric pressure), the volume of the cavity generated by the water level drop under the normal working state of the water pump 1 is V3, and the air pressure in the water storage tank is P2. Then according to the ideal gas equation of state (temperature considerations are constant): p1 × (V1+ V2) ═ P2 × (V2+ V3), and P2 ═ P1 — ρ gh (theoretical critical point). When the air pressure P2 continuously drops below (P0- ρ gh), water is sucked into the water storage tank 2, at the moment, the water level does not drop any more, and the water pump 1 enters a normal working state. When the water pump 1 stops working, water in the lift pipe flows back, the water level of the water storage tank 2 continuously rises, and air in the tank is discharged until the water level in the tank is recovered to the original water level. So that no air-lock effect is produced even if the bottom valve is not used. After the water pump 1 is determined by type selection and the installation position, the size of the water storage tank 2 and the height difference of the inlet and the outlet can be determined by a formula.
In order to prevent water loss in water storage tank 2, this embodiment will water storage tank 2 on be equipped with water filling port 21, be connected with the jam on the water filling port 21, the jam should with 2 sealed cooperations of water storage tank, in water storage tank 2 under the water loss condition add the water source from water filling port 21 can.
In order to facilitate cleaning of sludge in the water storage tank 2, the bottom of the water storage tank 2 is provided with a sludge cleaning opening 22, the sludge cleaning opening 22 is connected with a plug, and the plug is also connected with the water storage tank 2 in a sealing manner.
In order to prevent debris and large granule silt from getting into water pump 1, this embodiment will 2 in the water storage tank connect the water pump 1 entrance and be equipped with filter screen 23, filter screen 23 mounted position will be higher than the bottom of water storage tank 2 and make the space that has storage silt in the water storage tank 2. The setting up of filter screen 23 makes water pump 1 can obtain better protection, avoids water pump 1 to get into debris. Simultaneously in order to consider the problem that filter screen 23 easily blockked up, this embodiment will filter screen 23 mounted position correspond with the mounted position of the suction pipe 3 on the water storage tank 2, the hydroenergy of inhaling from suction pipe 3 when water pump 1 draws water can wash filter screen 23. Although the filter screen 23 can not directly be washed to 3 play waters of suction pipe, owing to 3 play waters of suction pipe aim at the position of filter screen 23, suction pipe 3 can drive the rivers of filter screen 23 department with higher speed and move under the water high pressure, and debris on the filter screen 23 are easily taken away to rivers when high-speed flow, avoid filter screen 23 to block up. The filter screen 23 is made of stainless steel, and the stainless steel can prolong the service life of the filter screen 23.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and substitutions may be made by one of ordinary skill in the art without departing from the spirit and scope of the utility model.
Claims (6)
1. The utility model provides a solve device that water pump air tied up effect which characterized in that: the water inlet end of the water pump is connected with a water storage tank, the upper part of the water storage tank is connected with a suction pipe, the lower part of the water storage tank is connected with an inlet of the water pump, and the water storage tank is filled with water in the initial state.
2. The device for solving the air-lock effect of the water pump as claimed in claim 1, wherein: the water storage tank is provided with a water filling port, and the water filling port is connected with a plug.
3. The device for solving the air-lock effect of the water pump as claimed in claim 1, wherein: the bottom of the water storage tank is provided with a dredging opening, and the dredging opening is connected with a plug.
4. The device for solving the air-lock effect of the water pump as claimed in claim 3, wherein: a filter screen is arranged at the inlet of the water pump in the water storage tank, and the installation position of the filter screen is higher than the bottom of the water storage tank, so that a space for storing sludge is formed in the water storage tank.
5. The device for solving the air-lock effect of the water pump as recited in claim 4, wherein: the filter screen mounting position correspond with the mounting position of the suction pipe on the water storage tank, and the filter screen can be flushed by water sucked from the suction pipe when the water pump pumps water.
6. The device for solving the air-lock effect of the water pump as claimed in claim 5, wherein: the filter screen is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123417490.XU CN216767884U (en) | 2021-12-31 | 2021-12-31 | Device for solving air-bound effect of water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123417490.XU CN216767884U (en) | 2021-12-31 | 2021-12-31 | Device for solving air-bound effect of water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216767884U true CN216767884U (en) | 2022-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123417490.XU Active CN216767884U (en) | 2021-12-31 | 2021-12-31 | Device for solving air-bound effect of water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216767884U (en) |
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2021
- 2021-12-31 CN CN202123417490.XU patent/CN216767884U/en active Active
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