CN221220805U - Pump cover mounted on pump body and liquid ring vacuum pump - Google Patents
Pump cover mounted on pump body and liquid ring vacuum pump Download PDFInfo
- Publication number
- CN221220805U CN221220805U CN202322577433.0U CN202322577433U CN221220805U CN 221220805 U CN221220805 U CN 221220805U CN 202322577433 U CN202322577433 U CN 202322577433U CN 221220805 U CN221220805 U CN 221220805U
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- pump
- air outlet
- cover
- valve plate
- pipeline
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- 239000007788 liquid Substances 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 18
- 238000007747 plating Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000001788 irregular Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The application provides a pump cover and a liquid ring vacuum pump which are arranged on a pump body. The cover body sets up as an organic whole structure, one side of cover body is equipped with air inlet and gas outlet, and the opposite side is equipped with air inlet pipeline and gas outlet pipeline, the air inlet pipeline with the air inlet intercommunication, supply gas follow the air inlet pipeline is via in the air inlet input pump body, the gas outlet pipeline with the gas outlet intercommunication, supply gas follow the gas outlet is via the gas outlet pipeline exports outside the pump body. The one-way valve is arranged in a passage of the air outlet connected with the air outlet pipeline and is configured to flow unidirectionally from the air outlet to the air outlet pipeline. The pump cover can reduce the number of parts and enable the vacuum degree of the liquid ring vacuum pump to be higher.
Description
Technical Field
The application relates to the field of vacuum pumps, in particular to a pump cover arranged on a pump body and a liquid ring vacuum pump.
Background
The pump cover of the liquid ring vacuum pump commonly used at present is formed by assembling a distribution plate and an end cover comprising an air inlet pipeline and an air outlet pipeline in a split mode, so that the parts are more, and the assembling process is more complicated.
Disclosure of utility model
The application provides a pump cover and a liquid ring vacuum pump which are arranged on a pump body, the number of parts is reduced, and the vacuum degree of the liquid ring vacuum pump is higher.
Specifically, the application is realized by the following technical scheme:
in one aspect of the present application, there is provided a pump cap mounted to a pump body, comprising:
The cover body is arranged into an integrated structure, one side of the cover body is provided with an air inlet and an air outlet, the other side of the cover body is provided with an air inlet pipeline and an air outlet pipeline, the air inlet pipeline is communicated with the air inlet, gas is supplied to be input into the pump body from the air inlet pipeline through the air inlet, the air outlet pipeline is communicated with the air outlet, and gas is supplied to be output out of the pump body from the air outlet through the air outlet pipeline;
The one-way valve is arranged in a passage of the air outlet connected with the air outlet pipeline and is configured to flow unidirectionally from the air outlet to the air outlet pipeline.
Optionally, the air outlet pipeline is provided with a mounting opening and a sealing cover, the air outlet is opposite to the mounting opening, the sealing cover is used for sealing the mounting opening, and the one-way valve is mounted at the air outlet through the mounting opening and is used for opening or stopping the air outlet pipeline in a one-way.
Optionally, the pump cover further comprises a vent pipe, one end of the vent pipe is an air inlet end, the other end of the vent pipe is an air outlet end, and the air outlet end penetrates through the pump cover and is used for being arranged in an air outlet cavity of the pump body.
Optionally, a vent tube is mounted to the cover.
Optionally, the air outlet comprises a plurality of holes which are arranged in a concentrated manner, and the holes are communicated with the air outlet pipeline.
Optionally, the check valve includes movable valve block and limit valve plate, the valve block can be closed or open the pipeline of giving vent to anger, limit valve plate fixed connection in the lid body, limit valve plate set up to when the valve block is opened with limit valve plate supports and leans on, is used for limiting the open position of valve block.
Optionally, the valve plate is an elastic valve plate, one end of the valve plate is fixedly connected to the cover body, and the other end of the valve plate is a free end.
Optionally, the cover body includes the water circulation passageway, water circulation passageway one end is the water inlet, and the other end is the delivery port, the water inlet is located the edge of cover body, the water inlet is configured to towards the pump body inside, the delivery port is configured to just to the center of the impeller in the pump body.
Optionally, a plating layer is provided on the surface of the cover body.
In another aspect of the application, a liquid ring vacuum pump is provided comprising a pump cap of any of the above.
According to the pump cover and the liquid ring vacuum pump mounted on the pump body, the pump cover is designed into the integrated structure, the distribution plate and the end cover are directly integrated into a whole, the step of assembling the distribution plate and the end cover is omitted, the number of parts is reduced, the cost is greatly reduced, and the sealing problem between the distribution plate and the end cover is not required to be considered. Furthermore, the pump cover also comprises a one-way valve, and the air can flow to the outside of the pump body only through the one-way valve, so that the air in the client pipeline or the atmosphere can be prevented from flowing back into the inside of the pump body, thereby influencing the air pressure in the air outlet and the air outlet process. Therefore, the check valve is added at the air outlet, so that the vacuum degree of the liquid ring vacuum pump is higher.
Drawings
FIG. 1 is a current pump cap assembly;
FIG. 2 is a dispensing version of the present pump cap;
FIG. 3 is an end cap of a current pump cap;
FIG. 4 is a front view of a pump cap according to an exemplary embodiment of the present application;
FIG. 5 is a schematic diagram of a pump cap according to an exemplary embodiment of the present application;
Fig. 6 is a side view of a pump cap according to an exemplary embodiment of the present application.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with aspects of the application.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one, and the terms "a" and "an" are used individually. "plurality" or "plurality" means two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and/or "upper," "top," "bottom," and the like are merely for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
Referring to fig. 1, the pump cover assembly generally used at present includes a distribution plate 10 and an end cover 20, wherein the distribution plate 10 and the end cover 20 are separately arranged, an air inlet pipe 21 and an air outlet pipe 22 are connected to the end cover 20, and referring to fig. 2 and 3, a partition plate 23 is included on one side of the end cover 20 facing the distribution plate 10, and the partition plate 23 separates a space where the air inlet pipe 21 is connected from a space where the air outlet pipe is connected, so that air inlet and air outlet do not affect each other. The distribution plate 10 and the end cover 20 are arranged in a split mode, the pump cover assembly further comprises a sealing ring 30 positioned between the air inlet pipeline 21 and the air outlet pipeline 22, the sealing ring 30 and the distribution plate 10 and the end cover 20 are required to be assembled in a sealing mode in the assembling process, and high requirements are met in the assembling process.
Based on the above-mentioned phenomenon, the present application provides a pump cap mounted on a pump body, the pump cap is mounted on an end of the pump body, referring to fig. 4, the pump cap includes a cap body 100 and a check valve 200. The cover body 100 is provided as an integral structure, and is manufactured through an integral molding process, for example, casting processing, 3D printing, and the like. Referring to fig. 5, an air inlet 111 and an air outlet 121 are provided on one side of the cover body 100, and an air inlet pipe 110 and an air outlet pipe 120 are provided on the other side, wherein the air inlet pipe 110 and the air outlet pipe 120 are not limited in shape and may be cylindrical, rectangular or irregular. The air inlet pipeline 110 is communicated with the air inlet 111, gas is supplied to be input into the pump body from the air inlet pipeline 110 through the air inlet 111, the air outlet pipeline 120 is communicated with the air outlet 121, and the gas is supplied to be output out of the pump body from the air outlet 121 through the air outlet pipeline 120, and the integrated pump cover directly integrates the distribution plate 10 and the end cover 20 into a whole, so that the step of assembling the distribution plate 10 and the end cover 20 is omitted, the number of parts is reduced, the cost is greatly reduced, and the sealing problem between the distribution plate 10 and the end cover 20 is not required to be considered.
Further, the pump cover of the present application further includes a check valve 200, and the check valve 200 is installed in a path connecting the air outlet 121 with the air outlet pipe 120 and configured to flow unidirectionally from the air outlet 121 to the air outlet pipe 120. The air can circulate to the outside of the pump body only through the check valve 200, so that the air in the client pipeline or the atmosphere can be prevented from flowing back into the pump body, thereby affecting the air pressure in the air outlet 121 and affecting the air outlet process. The check valve 200 is added to the air outlet 121, so that the vacuum degree of the liquid ring vacuum pump can be higher. The check valve 200 may be installed in the air outlet pipe 120 or the air outlet 121.
In an embodiment, referring to fig. 4 and 6, the air outlet pipe 120 is provided with a mounting opening 120a and a sealing cover 120b, the mounting opening 120a and the sealing cover 120b together enclose a part of air outlet channel, the air outlet 121 faces the mounting opening 120a, the sealing cover 120b is used for sealing the mounting opening 120a, and the sealing cover 120b and the mounting opening 120a are detachably mounted, and may be mounted by bolts, clamping or the like. The check valve 200 is installed at the air outlet 121 via the installation opening 120a, and is used for opening or closing the air outlet pipeline 120 in a unidirectional manner, the check valve 200 is blocked at the air outlet 121, so that the air outlet pipeline 120 can be closed, and when the check valve 200 is separated from the air outlet, the air outlet pipeline 120 can be opened. The mounting opening 120a is arranged at the air outlet pipeline 120, so that a mounting space can be provided for mounting the check valve 200, the mounting opening 120a is closed by the sealing cover 120b, the air outlet 121 is blocked, or the check valve 200 is damaged, and the sealing cover 120b can be opened to directly repair or replace the air outlet 121 or the check valve 200. The whole pump body is not required to be detached from the client, and the pump cover is opened for maintenance, so that the maintenance process is greatly simplified.
In an embodiment, referring to fig. 4 and 6, the pump cover further includes a vent pipe 130, one end of the vent pipe 130 is an air inlet end, and the other end is an air outlet end, and the air outlet end passes through the pump cover for being disposed in an air outlet cavity of the pump body. The inside impeller 300 that includes eccentric installation of the pump body, impeller 300 rotation drive the inside liquid of pump body form the liquid ring, and the inside cavity that includes liquid ring portion and liquid ring portion centre of pump body, cavity include inhale the air cavity and go out the air cavity, and air inlet 111 is just to inhaling the air cavity, and air outlet 121 is just to going out the air cavity. One end of the vent pipe 130 is arranged in the air outlet cavity, and the other end is used for introducing air, so that the air pressure of the air outlet cavity is increased, and the cavitation phenomenon under high vacuum is reduced.
In one embodiment, the vent tube 130 is mounted to the cover 120b, one end of the vent tube 130 extends from the cover 120b, the vent tube 130 itself passes through the mounting opening 120a, and the other end extends from the cover body opposite the air outlet chamber. The vent pipe 130 is disposed on the cover 120b, which facilitates maintenance and replacement of the vent pipe 130.
In one embodiment, the air outlet 121 includes a plurality of holes that are centrally disposed and all communicate with the air outlet pipe. Wherein the hole pattern can be square hole, round hole, irregular hole, etc.
In an embodiment, referring to fig. 4, the check valve 200 includes a movable valve plate 210 and a limit valve plate 220, where the valve plate 210 can close or open the air outlet pipe 120, the limit valve plate 220 is fixedly connected to the cover body, and the limit valve plate 220 is configured to abut against the limit valve plate 220 when the valve plate 210 is opened, so as to limit the opening position of the valve plate 210. The valve plate 210 may be a valve plate capable of moving along the axial direction of the air outlet 121, the valve plate 210 is disposed outside the air outlet 121, and the size and shape of the valve plate 210 are adapted to the air outlet 121, and at least can cover the air outlet 121. When the air is exhausted, the valve plate 210 is blown away by the exhausted air, so that the valve plate 210 is separated from the air outlet 121, the opening degree of the valve plate 210 can be propped against the limit valve plate 220 after reaching a certain opening degree, the maximum opening position of the valve plate 210 is propped against the limit valve plate 220, and the maximum opening degree of the valve plate 210 can be controlled through the limit valve plate 220.
In an embodiment, the valve plate 210 is an elastic valve plate, and the elastic valve plate is deformable, and one end of the elastic valve plate is fixed on the cover body, and the other end of the elastic valve plate is a free end, so that the air outlet pipeline can be opened or closed. The elastic valve plate can be opened and closed by utilizing the elasticity of the elastic valve plate, so that the space required for installing the valve plate can be saved, and the volume of the installation opening 120a can be reduced.
In an embodiment, referring to fig. 6, the cover body includes a water circulation channel 400, one end of the water circulation channel 400 is a water inlet 410, the other end is a water outlet 420, the water inlet 410 is located at an edge of the cover body 100, since a liquid ring inside the pump body is located at an edge portion inside the pump body, and the water inlet 410 is configured to face towards the inside of the pump body, the water inlet 410 faces towards the liquid ring, the water outlet 420 is configured to face the center of an impeller in the pump body, in an operating state of the liquid ring vacuum pump, liquid in the liquid ring is pressed into the water inlet 410 under the action of pressure, water is discharged along the water circulation channel 400 through the water outlet 420, and because the water outlet 420 faces to the center of the impeller, the centrifugal force at the center is minimum in the rotating process of the impeller, the liquid at the water outlet 420 is ejected and diffused into a water inlet cavity with smaller pressure, a liquid film is formed between the water inlet cavity and the cover body, and an end face seal is formed, so that the gas of the air outlet cavity is prevented from leaking back to the air outlet.
In other embodiments, the surface coating of the cover body can be electroplated copper or other materials, so that the cover body is more attractive and corrosion-resistant.
The application also provides a liquid ring vacuum pump which can comprise any pump cover.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the application.
Claims (10)
1. A pump cover for mounting to a pump body, comprising:
The cover body is arranged into an integrated structure, one side of the cover body is provided with an air inlet and an air outlet, the other side of the cover body is provided with an air inlet pipeline and an air outlet pipeline, the air inlet pipeline is communicated with the air inlet, gas is supplied to be input into the pump body from the air inlet pipeline through the air inlet, the air outlet pipeline is communicated with the air outlet, and gas is supplied to be output out of the pump body from the air outlet through the air outlet pipeline;
The one-way valve is arranged in a passage of the air outlet connected with the air outlet pipeline and is configured to flow unidirectionally from the air outlet to the air outlet pipeline.
2. The pump cover mounted on the pump body according to claim 1, wherein the air outlet pipe is provided with a mounting opening and a sealing cover, the air outlet is opposite to the mounting opening, the sealing cover is used for sealing the mounting opening, and the one-way valve is mounted at the air outlet through the mounting opening and is used for opening or closing the air outlet pipe in a one-way manner.
3. The pump cover mounted to the pump body of claim 2, further comprising a vent tube having one end that is an inlet end and the other end that is an outlet end that passes through the pump cover for placement in an outlet cavity of the pump body.
4. A pump cover for mounting to a pump body as claimed in claim 3, wherein a vent tube is mounted to the closure.
5. The pump cover mounted to the pump body of claim 1, wherein the air outlet includes a plurality of centrally disposed holes, each of the plurality of holes being in communication with the air outlet line.
6. The pump cover mounted to the pump body of claim 1, wherein the check valve comprises a movable valve plate and a limit valve plate, the valve plate being capable of closing or opening the outlet line, the limit valve plate being fixedly connected to the cover body, the limit valve plate being arranged to abut the limit valve plate when the valve plate is opened, for limiting the open position of the valve plate.
7. The pump cover mounted to the pump body of claim 6, wherein the valve plate is an elastic valve plate, and one end of the valve plate is fixedly connected to the cover body, and the other end is a free end.
8. The pump cover mounted to the pump body of claim 1, wherein the cover body includes a water circulation channel having a water inlet at one end and a water outlet at the other end, the water inlet being located at an edge of the cover body, the water inlet being configured to face the inside of the pump body, and the water outlet being configured to face a center of an impeller in the pump body.
9. Pump cover mounted to a pump body according to claim 1, wherein the cover body is provided with a plating layer on a surface thereof.
10. A liquid ring vacuum pump comprising a pump cap according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322577433.0U CN221220805U (en) | 2023-09-21 | 2023-09-21 | Pump cover mounted on pump body and liquid ring vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322577433.0U CN221220805U (en) | 2023-09-21 | 2023-09-21 | Pump cover mounted on pump body and liquid ring vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221220805U true CN221220805U (en) | 2024-06-25 |
Family
ID=91578690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322577433.0U Active CN221220805U (en) | 2023-09-21 | 2023-09-21 | Pump cover mounted on pump body and liquid ring vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221220805U (en) |
-
2023
- 2023-09-21 CN CN202322577433.0U patent/CN221220805U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |