CN215633803U - Self-priming device of high-lift centrifugal pump - Google Patents
Self-priming device of high-lift centrifugal pump Download PDFInfo
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- CN215633803U CN215633803U CN202121959976.3U CN202121959976U CN215633803U CN 215633803 U CN215633803 U CN 215633803U CN 202121959976 U CN202121959976 U CN 202121959976U CN 215633803 U CN215633803 U CN 215633803U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 193
- 238000005381 potential energy Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Abstract
The utility model discloses a self-priming device of a high-lift centrifugal pump, which comprises a water inlet body connected with a pump shell, wherein a heightening baffle is arranged in the water inlet body, a drain hole is formed between the upper edge of the heightening baffle and the inner wall of the water inlet body, a left cavity is formed between the heightening baffle and a water inlet hole arranged on the water inlet body, and a right cavity is formed between the heightening baffle and a water outlet hole arranged on the water inlet body; and a water return hole is formed in the bottom of the right cavity and communicated with a water outlet channel of the centrifugal pump. When the multistage centrifugal pump works again, enough water in the water outlet channel of the centrifugal pump flows back to the water inlet body through the water return hole and is mixed with air again to enter the impeller chamber in cycles, so that the air is discharged as soon as possible, and the suction stroke is improved.
Description
Technical Field
The utility model relates to a self-priming device of a high-lift centrifugal pump.
Background
The existing multistage centrifugal pump does not have a self-suction function, the whole function is single, and the automatic control degree is low.
Therefore, a self-priming structure applied to a multistage centrifugal pump appears in the market, so that the self-priming function of the centrifugal pump is obtained, but in the actual working process, the suction stroke of the conventional self-priming structure cannot be adjusted, so that the suction stroke is a certain value and cannot be adjusted according to the actual condition.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a self-priming device of a high-lift centrifugal pump, which can realize the self-priming function of a multistage centrifugal pump and further enhance the self-priming function.
In order to solve the technical problems, the utility model discloses a technical solution of a self-priming device of a high-lift centrifugal pump, which comprises the following steps:
the utility model discloses a self-priming device of a high-lift centrifugal pump, which comprises a water inlet body connected with a pump shell, wherein a heightening baffle is arranged in the water inlet body, a drain hole is formed between the upper edge of the heightening baffle and the inner wall of the water inlet body, a left cavity is formed between the heightening baffle and a water inlet hole arranged on the water inlet body, a right cavity is formed between the heightening baffle and a water outlet hole arranged on the water inlet body, the right cavity is communicated with an impeller chamber of the centrifugal pump, and water enters the impeller chamber through the water inlet hole, the left cavity, the drain hole, the right cavity and the water outlet hole; and a water return hole is formed in the bottom of the right cavity and communicated with a water outlet channel of the centrifugal pump.
Compared with the prior art, the high-lift centrifugal pump self-priming device has the advantages that after the device is shut down, the baffle plate is heightened to prevent water in the pump body from flowing away from the water inlet hole completely, so that water with a certain volume can be stored in the pump body, the air volume in the water inlet body is reduced, when the multi-stage centrifugal pump works again, enough water flows back to the water inlet body through the water return hole in the water outlet channel of the centrifugal pump, and is mixed with air again to enter the impeller chamber to be circulated, so that the air is discharged as soon as possible, and the suction lift is improved.
The water return hole is internally provided with a water return valve, the water return valve penetrates through a water return hole of a water inlet body and is connected with a nut in a threaded mode, and the elastic potential energy of a spring on the water return valve is adjusted through adjusting the position of the nut on the water return valve, so that the suction force required by the water return hole is blocked in a sealing mode through the water return valve.
Compared with the prior art, the self-priming device of the high-lift centrifugal pump can extrude or loosen the spring by adjusting the threaded position of the nut and the water return valve, so that the pressure for closing the water return valve, namely the pressure for discharging water can be adjusted, and the noise of the multistage centrifugal pump is greatly reduced after the water return valve is closed.
The water return valve comprises a valve core with a guide rod and a spring sleeved on the guide rod, the guide rod penetrates through the water return hole, a gap is formed between the guide rod and the water return hole, and the valve core cannot seal the water return hole under the elastic force of the spring; the guide rod is provided with an external thread, and the nut is screwed on the external thread.
Compared with the prior art, the self-priming device of the high-lift centrifugal pump has the advantages that the water in the water outlet channel can smoothly flow back to the water inlet body through the gap.
The side wall of the heightening baffle is provided with an air return baffle which is positioned right above the water return hole.
The air return baffle is of an arc structure, the inner arc surface of the arc structure faces the water return valve, and the outer arc surface faces the drain hole; the inner arc surface is inclined upwards.
Compared with the prior art, the self-priming device of the high-lift centrifugal pump has the advantages that the mixture of water and air in the water pipe enters the left chamber of the water inlet body through the water inlet hole, the water level in the left chamber rises continuously, then the water enters the right chamber through the water outlet hole, the water rushes to the air return baffle plate from the water outlet hole in the process, the water is dispersed, the dispersed water can dissolve more air in the water inlet body, and then the dispersed water enters the water outlet channel through the impeller chamber to discharge more air, so that the self-priming function is realized quickly; in addition, the water returning from the water return hole is flushed to the inner arc surface of the air return baffle plate, so that the water can be directly flushed to the impeller chamber.
The lower part of the heightening baffle is an inclined arc-shaped surface, the upper part of the heightening baffle is a vertical surface, and the inclined arc-shaped surface inclines towards the water outlet hole by taking the lower end as a fulcrum.
The vertical surface is vertical to the central lines of the water inlet hole and the water outlet hole.
Compared with the prior art, the self-priming device of the high-lift centrifugal pump has the advantages that the inclined arc-shaped structure and the heightened baffle plate of the vertical surface structure are beneficial to water entering the impeller chamber in a higher pressure mode.
The water inlet body is provided with a pump body, the pump body is provided with a positioning hole, the pump body is provided with a positioning structure, the positioning structure comprises a plurality of positioning pins arranged on the end face of the water inlet body, and the positioning pins are correspondingly matched with the positioning holes in the pump body.
Compared with the prior art, the self-priming device of the high-lift centrifugal pump has the advantages that the positioning structure enables the installation of the water inlet body and the pump body to be faster and more accurate.
The water inlet body is of an integrally formed structure and comprises a pressing plate and a flow guide body.
Compared with the prior art, the self-priming device of the high-lift centrifugal pump enables the whole processing to be more consistent, reduces the difficulty of the installation process and improves the precision.
In conclusion, the self-priming device of the high-lift centrifugal pump has the advantages of low manufacturing cost, convenience in installation, high suction lift and the like.
Drawings
FIG. 1 is a perspective view from one perspective of the high lift centrifugal pump self-priming apparatus of the present invention;
FIG. 2 is a perspective view of another perspective of the high lift centrifugal pump self-priming apparatus of the present invention;
fig. 3 is a structural sectional view of the self-priming device of the high-lift centrifugal pump of the present invention.
Detailed Description
The utility model is described in further detail below with reference to the following figures and detailed description:
referring to fig. 1 to 3, the present invention provides a self-priming device of a high lift centrifugal pump, which is installed on a water inlet body 1 connected with a pump housing, and includes a water return valve 2, wherein the water return valve 2 passes through a water return hole 3 of the water inlet body 1 and is screwed with a nut 4, and the position of the nut 4 on the water return valve 2 is adjusted to adjust the elastic potential energy of a spring 5 on the water return valve 2, so as to adjust the suction force required for sealing and blocking the water return hole 3 by the water return valve 2.
The water return hole 3 is communicated with a water outlet channel of the centrifugal pump, when the centrifugal pump starts to work, a mixture of water and air exists in the water outlet channel, the air is lighter than the water, so the air is discharged out of the water outlet channel, and the air flows back to the water return hole 3 under the water, the pressure of the water flowing back is smaller than the water pressure in the water inlet body 1 and the elasticity of the spring 5 on the water return valve 2, and therefore the water can return to the water inlet body 1 again through the water return hole 3 and is mixed with the air again to enter the impeller chamber.
The water return valve 2 comprises a valve core 7 with a guide rod 6 and a spring 5 sleeved on the guide rod 6, the guide rod 6 penetrates through the water return hole 3, a gap 8 is formed between the guide rod 6 and the water return hole 3, and the valve core 7 cannot seal the water return hole 3 under the elastic force of the spring 5; the guide rod 6 is provided with an external thread, and the nut 4 is screwed on the external thread.
The centrifugal pump is characterized in that a heightening baffle 11 is arranged in the water inlet body 1, a drain hole 12 is formed between the upper edge of the heightening baffle 11 and the inner wall of the water inlet body 1, a left cavity 19 is formed between the heightening baffle 11 and a water inlet hole 9 arranged on the water inlet body 1, a right cavity 20 is formed between the heightening baffle 11 and a water outlet hole 10 arranged on the water inlet body 1, the right cavity 20 is communicated with an impeller chamber of the centrifugal pump, and water enters the impeller chamber through the water inlet hole 9, the left cavity 19, the drain hole 12, the right cavity 20 and the water outlet hole 10.
The side wall of the heightening baffle 11 is provided with an air return baffle 13, and the air return baffle 13 is positioned right above the water return hole 3.
The air return baffle 13 is of an arc structure, an inner arc surface 14 of the arc structure faces the water return valve 2, and an outer arc surface 15 faces the water drain hole 12; the inner arc surface is inclined upwards; the water falling from the water discharge hole 12 is diffused in a wider range of ways by the block of the outer arc surface 15, increasing the area of the water, thereby enabling the air to be dissolved in the water more quickly and more.
The lower part of the heightening baffle 11 is an inclined arc-shaped surface 16, the upper part of the heightening baffle is a vertical surface 17, and the inclined arc-shaped surface 16 inclines towards the water outlet hole 10 by taking the lower end as a fulcrum. That is to say, the included angle towards apopore 10 direction between slope arcwall face 16 and the water intaking body 1 inner wall is the acute angle, and the design of slope arcwall face 16 in addition for the water that the outlet channel returns upwards strikes and just dashes on air return baffle 13 and slope arcwall face 16, and this part of water can directly dash apopore 10 and get into the impeller chamber, improves the efficiency of inhaling certainly.
The vertical surface 17 is perpendicular to the central lines of the water inlet hole 9 and the water outlet hole 10.
One end of the water inlet body 1, which is connected with the pump body in a matching mode, is also provided with a positioning structure, the positioning structure comprises a plurality of positioning pins 18 arranged on the end face of the water inlet body 1, and the positioning pins 18 are correspondingly matched with positioning holes in the pump body.
The working principle of the self-priming device of the high-lift centrifugal pump of the utility model is explained as follows:
the utility model relates to a self-priming device of a high-lift centrifugal pump, when in installation, one end of a water inlet body 1 with a positioning structure is connected with a pump body, and a positioning pin 18 is matched with the positioning hole, so that the assembly of the water inlet body 1 and the pump body can be rapidly realized, after the assembly is finished, a water return hole 3 of the water inlet body 1 is communicated with a return channel of the pump body, and the return channel is communicated to a water outlet channel, so that when the centrifugal pump works, the water outlet channel is a mixture of air and water, wherein the air is light and is discharged out of the water outlet channel, the water falls down to the water return hole 3 through the return channel, and flows back to the water inlet body 1 through a gap 8 between the water return hole 3 and a guide rod 6, then is mixed with the air again to enter an impeller chamber, and circulates in the way until the air is exhausted, at the moment, the water pressure in the water outlet channel acts on a water return valve 2 through the return channel, and the water pressure is larger than the acting force of a water pressure superposition spring 5 on the water return valve 2 in the water inlet body, thereby the water return valve 2 seals the water return hole 3 and the centrifugal pump works under full water pressure.
According to our experimental test, when the water pressure in the water outlet channel reaches 0.8-1KG, the water return valve 2 moves upwards along the direction that the guide rod 6 moves axially in the water return hole 3, and finally the valve core 7 seals the water return hole 3, so that the multistage centrifugal pump works in a full-water-pressure mode.
When the self-suction closing pressure of the water return valve 2 needs to be adjusted, the pressure of the valve core 7 on the spring 5 is changed by rotating the nut 4, and therefore the purpose of adjustment is achieved.
In conclusion, the self-priming device of the high-lift centrifugal pump has the advantages of adjustable water outlet pressure, accurate positioning, convenience in installation and the like.
The self-priming device of the high-lift centrifugal pump provided by the embodiment of the utility model is described in detail, the principle and the implementation mode of the utility model are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the technical scheme disclosed by the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. The utility model provides a high-lift centrifugal pump is from inhaling device, includes on the water inlet body of being connected with the pump case, its characterized in that: the centrifugal pump is characterized in that a heightening baffle is arranged in the water inlet body, a drain hole is formed between the upper edge of the heightening baffle and the inner wall of the water inlet body, a left cavity is formed between the heightening baffle and a water inlet hole formed in the water inlet body, a right cavity is formed between the heightening baffle and a water outlet hole formed in the water inlet body, the right cavity is communicated with an impeller chamber of the centrifugal pump, and water enters the impeller chamber through the water inlet hole, the left cavity, the drain hole, the right cavity and the water outlet hole; and a water return hole is formed in the bottom of the right cavity and communicated with a water outlet channel of the centrifugal pump.
2. The self-priming device of a high-lift centrifugal pump of claim 1, wherein: the water return hole is internally provided with a water return valve, the water return valve penetrates through a water return hole of a water inlet body and is connected with a nut in a threaded mode, and the elastic potential energy of a spring on the water return valve is adjusted through adjusting the position of the nut on the water return valve, so that the suction force required by the water return hole is blocked in a sealing mode through the water return valve.
3. The self-priming device of a high-lift centrifugal pump of claim 2, wherein: the water return valve comprises a valve core with a guide rod and a spring sleeved on the guide rod, the guide rod penetrates through the water return hole, a gap is formed between the guide rod and the water return hole, and the valve core cannot seal the water return hole under the elastic force of the spring; the guide rod is provided with an external thread, and the nut is screwed on the external thread.
4. A high lift centrifugal pump self-priming device according to claim 1, 2 or 3, wherein: the side wall of the heightening baffle is provided with an air return baffle which is positioned right above the water return hole.
5. The self-priming device of a high-lift centrifugal pump of claim 4, wherein: the air return baffle is of an arc structure, the inner arc surface of the arc structure faces the water return valve, and the outer arc surface faces the drain hole; the inner arc surface is inclined upwards.
6. The self-priming device of a high-lift centrifugal pump of claim 1, wherein: the lower part of the heightening baffle is an inclined arc-shaped surface, the upper part of the heightening baffle is a vertical surface, and the inclined arc-shaped surface inclines towards the water outlet hole by taking the lower end as a fulcrum.
7. The self-priming device of a high-lift centrifugal pump of claim 6, wherein: the vertical surface is vertical to the central lines of the water inlet hole and the water outlet hole.
8. The self-priming device of a high-lift centrifugal pump of claim 1, wherein: the water inlet body is provided with a pump body, the pump body is provided with a positioning hole, the pump body is provided with a positioning structure, the positioning structure comprises a plurality of positioning pins arranged on the end face of the water inlet body, and the positioning pins are correspondingly matched with the positioning holes in the pump body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121959976.3U CN215633803U (en) | 2021-08-19 | 2021-08-19 | Self-priming device of high-lift centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121959976.3U CN215633803U (en) | 2021-08-19 | 2021-08-19 | Self-priming device of high-lift centrifugal pump |
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| Publication Number | Publication Date |
|---|---|
| CN215633803U true CN215633803U (en) | 2022-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121959976.3U Active CN215633803U (en) | 2021-08-19 | 2021-08-19 | Self-priming device of high-lift centrifugal pump |
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| Country | Link |
|---|---|
| CN (1) | CN215633803U (en) |
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2021
- 2021-08-19 CN CN202121959976.3U patent/CN215633803U/en active Active
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