CN218093467U - Double-suction self-priming pump - Google Patents
Double-suction self-priming pump Download PDFInfo
- Publication number
- CN218093467U CN218093467U CN202222388436.5U CN202222388436U CN218093467U CN 218093467 U CN218093467 U CN 218093467U CN 202222388436 U CN202222388436 U CN 202222388436U CN 218093467 U CN218093467 U CN 218093467U
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- pump
- double
- partition plate
- mechanical seal
- shell
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- 238000005192 partition Methods 0.000 claims abstract description 40
- 238000002955 isolation Methods 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims description 28
- 238000000926 separation method Methods 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 36
- 239000010687 lubricating oil Substances 0.000 abstract description 10
- 238000007789 sealing Methods 0.000 abstract description 9
- 230000037452 priming Effects 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of self-priming pumps, in particular to a double-priming self-priming pump, which comprises a pump shell, wherein a first clapboard and a second clapboard are arranged in the pump shell; the middle parts of the first partition plate and the second partition plate are provided with water passing ports, the top surface of the pump shell is provided with a pump shaft, the bottom end of the pump shaft sequentially penetrates through the water passing ports on the first partition plate and the second partition plate downwards, a guide vane body is arranged between the first partition plate and the second partition plate and positioned on the periphery of the pump shaft, and a double-suction impeller is arranged on the pump shaft and positioned in the guide vane body; the inner surface of the top surface of the pump shell and the periphery of the pump shaft are provided with a mechanical seal shell, the pump shaft is in rotary seal with the pump shell and the mechanical seal shell through double-end-surface mechanical seal, an oil storage tank is arranged on the outer side of the pump shell and above the double-end-surface mechanical seal isolation cavity, and an oil conveying pipe is communicated with the double-end-surface mechanical seal isolation cavity. The auxiliary impeller sealing structure is eliminated, the lubricating oil sealing is realized through the double-end-face mechanical seal, the mechanical seal shell and the oil storage tank sealing structure, and the power loss of the double-suction self-priming pump is reduced.
Description
Technical Field
The utility model relates to a self priming pump technical field especially relates to a double suction self priming pump.
Background
The double-suction self-priming pump is mainly used for pumping large-flow liquid and has the advantages of compact structure, stable operation, low noise, high efficiency, high performance and the like.
At present, the sealing between a pump shaft and a pump shell in a double-suction self-priming pump is finished by an auxiliary impeller arranged on the pump shaft, and in the operation process of the double-suction self-priming pump, the auxiliary impeller rotates along with the pump shaft to generate an axial force on water in a pump cavity, so that the water at the connecting position of the pump shaft and the pump shell is discharged in the direction far away from the pump shaft, and the sealing is realized; although the auxiliary impeller rotates along with the pump shaft to realize the sealing function, the auxiliary impeller hardly has the effect on pressurizing and draining water of the double-suction self-priming pump, and the power loss of the double-suction self-priming pump is caused.
SUMMERY OF THE UTILITY MODEL
To the above problem, the embodiment of the utility model provides a double suction self priming pump.
The utility model discloses an aspect of implementation provides a double suction self priming pump, including the pump case, parallel arrangement has first baffle and second baffle from top to bottom in the pump case, and first baffle and second baffle divide the pump case inside into top feed liquor chamber, middle part play sap cavity and bottom feed liquor chamber, and pump case one side outer wall is provided with the inlet tube, and the inlet tube communicates with top feed liquor chamber and bottom feed liquor chamber, and pump case opposite side outer wall is provided with the outlet pipe, and the outlet pipe communicates with middle part play sap cavity; the middle parts of the first partition plate and the second partition plate are provided with water passing ports, the top surface of the pump shell is provided with a pump shaft, the bottom end of the pump shaft sequentially penetrates through the water passing ports on the first partition plate and the second partition plate downwards, a guide vane body is arranged between the first partition plate and the second partition plate and positioned on the periphery of the pump shaft, the guide vane body is hermetically arranged with the first partition plate and the second partition plate, and a double-suction impeller is arranged on the pump shaft and positioned in the guide vane body; the internal surface of pump case top surface just is located the periphery of pump shaft and is provided with mechanical seal casing, and the pump shaft passes through double mechanical seal and rotary seal between pump case and the mechanical seal casing, constitutes double mechanical seal between mechanical seal casing and the double mechanical seal and keeps apart the chamber, and the pump case outside just is located the top in double mechanical seal and keeps apart the chamber and is provided with the batch oil tank, and the UNICOM has defeated oil pipe between batch oil tank and the double mechanical seal isolation chamber.
Compared with the prior art, the beneficial effects of the utility model reside in that: the auxiliary impeller sealing structure is eliminated, the lubricating oil sealing is realized through the double-end-face mechanical seal, the mechanical seal shell and the oil storage tank sealing structure, and the power loss of the double-suction self-priming pump is reduced.
Optionally, a gas-water separation tank is arranged on the outer wall of the pump shell and below the oil storage tank, a water supply pipe is mounted at the bottom of the gas-water separation tank, and a communicating pipe is communicated between the gas-water separation tank and the oil storage tank.
Optionally, a top nozzle of the communicating pipe is located above the liquid in the oil storage tank, and a bottom nozzle of the communicating pipe is located above the liquid level in the gas-water separation tank.
Optionally, an exhaust valve is mounted on the pump housing.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic structural view of a double-suction self-priming pump according to an embodiment of the present invention.
The double-end-face mechanical seal device comprises a pump shell 1, a first partition plate 2, a second partition plate 3, a top liquid inlet cavity 4, a middle liquid outlet cavity 5, a bottom liquid inlet cavity 6, a water inlet pipe 7, a water outlet pipe 8, a pump shaft 9, a guide vane body 10, a double-suction impeller 11, a mechanical seal shell 12, a double-end-face mechanical seal 13, a double-end-face mechanical seal isolation cavity 14, an oil storage tank 15, an oil delivery pipe 16, a gas-water separation tank 17, a water supply pipe 18, a communicating pipe 19 and an exhaust valve 20.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments of the present invention and the description thereof are used to explain the present invention, but are not intended to limit the present invention.
Referring to fig. 1, the embodiment of the present invention provides a double-suction self-priming pump, which comprises a pump case 1, wherein a first partition plate 2 and a second partition plate 3 are arranged in the pump case 1 in parallel from top to bottom, the first partition plate 2 and the second partition plate 3 divide the interior of the pump case 1 into a top liquid inlet cavity 4, a middle liquid outlet cavity 5 and a bottom liquid inlet cavity 6, the outer wall of one side of the pump case 1 is provided with a water inlet pipe 7, the water inlet pipe 7 is communicated with the top liquid inlet cavity 4 and the bottom liquid inlet cavity 6, the outer wall of the other side of the pump case 1 is provided with a water outlet pipe 8, and the water outlet pipe 8 is communicated with the middle liquid outlet cavity 5; the middle parts of the first partition plate 2 and the second partition plate 3 are provided with water passing ports, the top surface of the pump shell 1 is provided with a pump shaft 9, the bottom end of the pump shaft 9 sequentially penetrates through the water passing ports on the first partition plate 2 and the second partition plate 3 downwards, a guide vane body 10 is arranged between the first partition plate 2 and the second partition plate 3 and positioned on the periphery of the pump shaft 9, the guide vane body 10 is hermetically arranged with the first partition plate 2 and the second partition plate 3, and a double-suction impeller 11 is arranged on the pump shaft 9 and positioned in the guide vane body 10; the inner surface of the top surface of the pump shell 1 and the periphery of the pump shaft 9 are provided with a mechanical seal shell 12, the pump shaft 9 is in rotary seal with the pump shell 1 and the mechanical seal shell 12 through a double-end-surface mechanical seal 13, a double-end-surface mechanical seal isolation cavity 14 is formed between the mechanical seal shell 12 and the double-end-surface mechanical seal 13, an oil storage tank 15 is arranged on the outer side of the pump shell 1 and above the double-end-surface mechanical seal isolation cavity 14, and an oil delivery pipe 16 is communicated between the oil storage tank 15 and the double-end-surface mechanical seal isolation cavity 14.
In implementation, a gas-water separation tank 17 is arranged on the outer wall of the pump shell 1 and below the oil storage tank 15, a water supply pipe 18 is arranged at the bottom of the gas-water separation tank 17, and a communication pipe 19 is communicated between the gas-water separation tank 17 and the oil storage tank 15; the top orifice of the communicating pipe 19 is positioned above the liquid in the oil storage tank 15, and the bottom orifice of the communicating pipe 19 is positioned above the liquid level in the gas-water separation tank 17. Can design the proportional relation of 17 volumes in the gas-water isolation tank and 15 volumes in the batch oil tank, ensure that the clear water in the gas-water isolation tank 17 enters into batch oil tank 15 before lubricating oil evacuation in the batch oil tank 15, avoid the air admission to cause double mechanical seal 13 dry friction phenomena in the double mechanical seal isolation chamber 14, even can realize simultaneously that the later stage does not annotate under the condition of lubricating oil, guarantee to pass through clear water lubrication, increase double mechanical seal 13 life.
The pump shell 1 is provided with an exhaust valve 20, and the exhaust valve 20 is used for ensuring the self-priming performance of the pump when the pump is in a self-priming state and is closed after the pump is normally operated when water is fed on the pump.
The top of the oil storage tank 15 can be provided with an oil filling valve, the side wall of the oil storage tank is provided with an oil pointer communicated with the oil storage tank 15, the oil pointer is used for conveniently checking the residual amount of oil in the oil storage tank 15, and lubricating oil can be filled into the oil storage tank through the oil filling valve.
During the operation of the pump, as shown by arrows in fig. 1, liquid enters the top liquid inlet cavity 4 and the bottom liquid inlet cavity 6 through the water inlet pipe 7, and the liquid in the two cavities is pressurized by the double-suction impeller 11, then is discharged into the middle liquid outlet cavity 5 through the guide vane body 10, and finally is discharged through the water outlet pipe 8;
the water supply pipe 18 can be connected to a clean water pump, so that water is supplied to the air-water isolation tank 17 and design pressure is provided, the pressure in the double-end-face mechanical seal isolation cavity 14 is ensured to be greater than the pressure in the top liquid inlet cavity 4, air in the air-water isolation tank 17 is sealed at the upper part in the tank, namely, the lower part in the air-water isolation tank 17 is water and the upper part is air, and in the long-term working process of the double-end-face mechanical seal 13, because the mechanical seal shell 12 structure has micro leakage, the oil level of lubricating oil in the oil storage tank 15 gradually drops, and if lubricating oil is supplemented in time, the double-end-face mechanical seal 13 is in an oil lubrication state; and along with the long-time use of the mechanical seal, the leakage quantity of the mechanical seal shell 12 is gradually increased, the consumption of the lubricating oil is increased, the lubricating oil can not be supplemented into the oil storage tank 15 any more at the moment, the clear water in the gas-water isolation tank 17 enters the oil storage tank 15 and the double-end-face mechanical seal isolation cavity 14 along with the consumption of the lubricating oil, clear-water lubrication is realized, the lubricating cost is reduced, and the service life of the double-end-face mechanical seal 13 is prolonged.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (4)
1. A double-suction self-priming pump is characterized by comprising a pump shell, wherein a first partition plate and a second partition plate are arranged in the pump shell in parallel from top to bottom, the first partition plate and the second partition plate divide the interior of the pump shell into a top liquid inlet cavity, a middle liquid outlet cavity and a bottom liquid inlet cavity, a water inlet pipe is arranged on the outer wall of one side of the pump shell and communicated with the top liquid inlet cavity and the bottom liquid inlet cavity, a water outlet pipe is arranged on the outer wall of the other side of the pump shell and communicated with the middle liquid outlet cavity; the middle parts of the first partition plate and the second partition plate are provided with water passing ports, the top surface of the pump shell is provided with a pump shaft, the bottom end of the pump shaft sequentially penetrates through the water passing ports on the first partition plate and the second partition plate downwards, a guide vane body is arranged between the first partition plate and the second partition plate and positioned on the periphery of the pump shaft, the guide vane body is hermetically arranged with the first partition plate and the second partition plate, and a double-suction impeller is arranged on the pump shaft and positioned in the guide vane body; the inner surface of the top surface of the pump shell and the periphery of the pump shaft are provided with a mechanical seal shell, the pump shaft is in rotary seal with the pump shell and the mechanical seal shell through double-end-face mechanical seal, a double-end-face mechanical seal isolation cavity is formed between the mechanical seal shell and the double-end-face mechanical seal, an oil storage tank is arranged on the outer side of the pump shell and above the double-end-face mechanical seal isolation cavity, and an oil conveying pipe is communicated between the oil storage tank and the double-end-face mechanical seal isolation cavity.
2. The double suction self-priming pump according to claim 1, wherein a gas-water separation tank is provided on the outer wall of the pump casing and below the oil storage tank, a water supply pipe is installed at the bottom of the gas-water separation tank, and a communication pipe is communicated between the gas-water separation tank and the oil storage tank.
3. The double suction self-primer pump of claim 1 wherein the top orifice of the communicating tube is located above the liquid in the reservoir and the bottom orifice of the communicating tube is located above the liquid level in the vapor-water separator tank.
4. The double suction self-primer pump of claim 1, wherein the pump housing has a vent valve mounted thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222388436.5U CN218093467U (en) | 2022-09-08 | 2022-09-08 | Double-suction self-priming pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222388436.5U CN218093467U (en) | 2022-09-08 | 2022-09-08 | Double-suction self-priming pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218093467U true CN218093467U (en) | 2022-12-20 |
Family
ID=84451184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222388436.5U Active CN218093467U (en) | 2022-09-08 | 2022-09-08 | Double-suction self-priming pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218093467U (en) |
-
2022
- 2022-09-08 CN CN202222388436.5U patent/CN218093467U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231207 Address after: 050600 south of East section of Xinhe street, Xingtang County Economic Development Zone (South District), Shijiazhuang City, Hebei Province Patentee after: Shanglishi group (Shijiazhuang) Pump Technology Co.,Ltd. Address before: 063000 No. 501, gate 5, 6th floor, Changning building, Changning Road bujiazhuang, Lubei District, Tangshan City, Hebei Province Patentee before: Song Qiuwei |