CN220059915U - Multistage double-suction split pump - Google Patents
Multistage double-suction split pump Download PDFInfo
- Publication number
- CN220059915U CN220059915U CN202321696957.5U CN202321696957U CN220059915U CN 220059915 U CN220059915 U CN 220059915U CN 202321696957 U CN202321696957 U CN 202321696957U CN 220059915 U CN220059915 U CN 220059915U
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- China
- Prior art keywords
- sealing plug
- air duct
- fixedly connected
- pump body
- split pump
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- 238000007789 sealing Methods 0.000 claims abstract description 55
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 230000002265 prevention Effects 0.000 claims abstract description 7
- 239000012528 membrane Substances 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 claims description 3
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 19
- 238000007906 compression Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to the technical field of split pumps, in particular to a multistage double-suction split pump which comprises a split pump body, wherein an anti-cavitation mechanism is arranged on the outer wall of the split pump body; the cavitation prevention mechanism comprises an air duct fixedly connected with the outer wall of the middle opening pump body, a one-way valve is fixedly connected to the inside of the air duct, an inner sealing plug is slidably connected to the position, close to the middle opening pump body, of the air duct, a reset spring is fixedly connected to the outer wall of the inner sealing plug and is fixedly connected to the position, close to the one-way valve, of the inner sealing plug, a guide hole is formed in the inner wall of the air duct, the outer sealing plug is fixedly connected to the position, far away from the inner sealing plug, of the air duct, the cavitation prevention mechanism in the device is used for reducing the damage of the cavitation on the middle opening pump, and the problem that liquid is easy to cause cavitation in the middle opening pump in the multistage double suction during operation of the traditional multistage double suction middle opening pump, so that the structure of the multistage double suction middle opening pump is damaged is solved.
Description
Technical Field
The utility model relates to the technical field of split pumps, in particular to a multistage double-suction split pump.
Background
The multistage double-suction split pump is a centrifugal pump with the characteristics of high lift, large flow and the like, but the existing multistage double-suction split pump still has the defects that: when the existing multistage double-suction split pump is operated, liquid is easy to cause cavitation in the multistage double-suction split pump, so that the multistage double-suction split pump structure is damaged.
Therefore, there is a need for a multi-stage double suction split pump to solve the problems set forth in the background art.
Disclosure of Invention
The utility model aims to provide a multistage double-suction split pump so as to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the multistage double-suction split pump comprises a split pump body, wherein an anti-cavitation mechanism is arranged on the outer wall of the split pump body;
the cavitation prevention mechanism comprises an air duct fixedly connected with the outer wall of the middle opening pump body, a one-way valve is fixedly connected to the inside of the air duct, an inner sealing plug is slidably connected to the position of the middle opening pump body, a reset spring is fixedly connected to the outer wall of the inner sealing plug and is close to the position of the one-way valve, an outer sealing plug is fixedly connected to the inside of the air duct and is far away from the position of the inner sealing plug, a deflector hole is formed in the outer wall of the outer sealing plug, a filter screen is fixedly connected to the outer wall of the outer sealing plug and is far away from one side of the one-way valve, a dewatering film is fixedly connected to the outer wall of the outer sealing plug and is far away from the position of the filter screen, and a fixing plate is fixedly connected to the outer wall of the air duct.
As a preferable scheme of the utility model, the split pump body is a multi-stage double-suction split pump.
As the preferable scheme of the utility model, the air duct and the fixing plate are both made of aluminum alloy, and the air duct, the one-way valve, the inner sealing plug and the outer sealing plug are all provided with a plurality of groups. As a preferable scheme of the utility model, the inner sealing plug is of a convex structure design, the inner sealing plug and the outer sealing plug are both made of ABS plastic, and the reset spring is fixedly connected with the air duct and the fixing plate is fixedly connected with the split pump body.
As a preferable scheme of the utility model, the dehydration membrane is made of a waterproof and breathable membrane, the fixing plate is provided with two groups, and the air duct penetrates through and extends to the position of the distribution plate in the split pump body.
As a preferred solution of the present utility model, the one-way valve only allows fluid to flow into the split pump body, and the fixing plate is of annular structural design.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the multistage double-suction split pump, the damage of the cavitation erosion split pump is relieved by utilizing the cavitation prevention mechanism in the device, when the split pump body operates, liquid flows into the split pump body, the liquid is compressed in the transitional plate area of the split pump body, bubbles in the liquid are broken in the compression process, the broken bubbles can form a low-pressure space in the liquid, the pressure of the liquid on the inner sealing plug is reduced, the inner sealing plug moves outwards under the action of the difference of internal pressure and external pressure, the air duct is not blocked by the outwards moving inner sealing plug, external air can pass through the outer sealing plug and the one-way valve and flows into the split pump body, and the low-pressure space caused by the breakage of the bubbles in the liquid can be timely supplemented by the gas with higher external inflow pressure, so that the damage of the cavitation erosion split pump is relieved, and the problem that the existing multistage double-suction split pump is damaged due to the fact that the liquid is easy to cavitation in the multistage double-suction split pump during operation is solved.
Drawings
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a front cross-sectional view of the cavitation prevention mechanism of the present utility model;
fig. 3 is an enlarged view of fig. 2 a in accordance with the present utility model.
In the figure: 1. a split pump body; 2. an anti-cavitation mechanism; 3. a shock pad; 201. an air duct; 202. a one-way valve; 203. an inner sealing plug; 204. a return spring; 205. an outer sealing plug; 206. a deflector aperture; 207. a filter screen; 208. a dewatering film; 209. and a fixing plate.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of protection of the present utility model.
In order that the utility model may be readily understood, several embodiments of the utility model will be described more fully hereinafter with reference to the accompanying drawings, in which, however, the utility model may be embodied in many different forms and is not limited to the embodiments described herein, but instead is provided for the purpose of providing a more thorough and complete disclosure of the utility model.
It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present, and when an element is referred to as being "connected" to the other element, it may be directly connected to the other element or intervening elements may also be present, the terms "vertical", "horizontal", "left", "right" and the like are used herein for the purpose of illustration only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs, and the terms used herein in this description of the utility model are for the purpose of describing particular embodiments only and are not intended to be limiting of the utility model, with the term "and/or" as used herein including any and all combinations of one or more of the associated listed items.
Referring to fig. 1-3, the present utility model provides a technical solution:
the multistage double-suction split pump comprises a split pump body 1, wherein the outer wall of the split pump body 1 is provided with a cavitation-preventing mechanism 2;
wherein the split pump body 1 is a multi-stage double-suction split pump;
in this embodiment, referring to fig. 2 and 3, the cavitation prevention mechanism 2 includes an air duct 201 fixedly connected to the outer wall of the split pump body 1, a one-way valve 202 is fixedly connected to the inside of the air duct 201, an inner sealing plug 203 is slidingly connected to the inside of the air duct 201 at a position close to the split pump body 1, a return spring 204 is fixedly connected to the outer wall of the inner sealing plug 203 at a position close to the one-way valve 202, an outer sealing plug 205 is fixedly connected to the inside of the air duct 201 at a position far from the inner sealing plug 203, a diversion hole 206 is formed on the outer wall of the outer sealing plug 205, a filter screen 207 is fixedly connected to the outer wall of the outer sealing plug 205 at a position far from the one-way valve 202, a dewatering film 208 is fixedly connected to the outer wall of the air duct 201 at a position far from the filter screen 207, and a fixing plate 209 is fixedly connected to the outer wall of the air duct 201;
the air duct 201 and the fixing plate 209 are made of aluminum alloy, the air duct 201, the one-way valve 202, the inner sealing plug 203 and the outer sealing plug 205 are all provided with a plurality of groups, the inner sealing plug 203 is of a convex structural design, the inner sealing plug 203 and the outer sealing plug 205 are made of ABS plastic, the reset spring 204 and the air duct 201 and the fixing plate 209 are fixedly connected with the middle opening pump body 1, the dewatering film 208 is made of a waterproof and breathable film, the fixing plate 209 is provided with two groups, the air duct 201 penetrates through and extends to the position of a distribution plate in the middle opening pump body 1, the one-way valve 202 only allows fluid to flow into the middle opening pump body 1, the fixing plate 209 is of an annular structural design, the fixing plate 209 and the outer high-pressure gas storage device are connected together, high-pressure gas can flow into the air duct 201, meanwhile, the middle opening pump body 1 is started, the liquid flows into the middle opening pump body 1, the transition plate area of the middle opening pump body 1 is compressed, the broken bubbles in the compression process form a low-pressure space in the liquid, the pressure of the liquid is reduced, the pressure difference of the inner 203 penetrates through and extends to the distribution plate position in the middle opening pump body 1, the middle opening pump body is not damaged by the high-pressure difference, the high-pressure gas can flow into the middle opening pump body 205, and the middle opening pump body is not damaged by the high-pressure air 205, and the high-pressure air flow into the middle opening pump body is timely and the middle opening pump body is further damaged by the high pressure pump 205.
The working flow of the utility model is as follows: when the multistage double-suction split pump designed by the scheme is operated, the fixing plate 209 is connected with external high-pressure gas storage equipment by using the guide pipe, high-pressure gas can flow into the gas guide pipe 201, the split pump body 1 is started, liquid flows into the split pump body 1, the liquid is compressed in the transitional plate area of the split pump body 1, bubbles in the liquid are broken in the compression process, the broken bubbles can form a low-pressure space in the liquid, the pressure of the liquid on the inner sealing plug 203 is reduced, the inner sealing plug 203 moves outwards under the action of the internal and external pressure difference, the gas guide pipe 201 is not blocked by the inner sealing plug 203 which moves outwards, external high-pressure gas can pass through the outer sealing plug 205 and the one-way valve 202 and flows into the split pump body 1, the gas with higher pressure which flows into the outside can timely supplement the low-pressure space which is formed by the broken bubbles in the liquid, so that the damage of the split pump body 1 is relieved, the filter screen 207 and the dewatering film 208 on the outer wall of the outer sealing plug 205 can remove sundries and water vapor in the high-pressure gas, after the cavitation is finished, the pressure of the liquid is restored, the pressure difference on the inner sealing plug 203 is removed, the inner sealing plug 203 is pulled by the pressure difference on the two sides, the inner sealing plug 203 moves reversely, and the sealing plug 203 moves reversely.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a pump is opened in multistage double suction, includes to open pump body (1), its characterized in that: the outer wall of the split pump body (1) is provided with a cavitation prevention mechanism (2);
anti-cavitation mechanism (2) are including fixedly connected with air duct (201) of well opening pump body (1) outer wall, the inside fixedly connected with check valve (202) of air duct (201), the inside of air duct (201) just is being close to well opening pump body (1) position department sliding connection in sealing plug (203), the outer wall of interior sealing plug (203) just is being close to check valve (202) position department fixedly connected with reset spring (204), the inside of air duct (201) just is keeping away from interior sealing plug (203) position department fixedly connected with external sealing plug (205), water conservancy diversion hole (206) have been seted up to the outer wall of external sealing plug (205), the outer wall of external sealing plug (205) just is keeping away from check valve (202) one side fixedly connected with filter screen (207), the outer wall of external sealing plug (205) just is keeping away from filter screen (207) position department fixedly connected with dehydration membrane (208), the outer wall fixedly connected with fixed plate (209) of air duct (201).
2. A multi-stage double suction split pump as claimed in claim 1 wherein: the split pump body (1) is a multistage double-suction split pump.
3. A multi-stage double suction split pump as claimed in claim 1 wherein: the air duct (201) and the fixing plate (209) are both made of aluminum alloy, and the air duct (201), the one-way valve (202), the inner sealing plug (203) and the outer sealing plug (205) are all provided with a plurality of groups.
4. A multi-stage double suction split pump as claimed in claim 1 wherein: the inner sealing plug (203) is of a convex structural design, the inner sealing plug (203) and the outer sealing plug (205) are made of ABS plastic, and the reset spring (204) is fixedly connected with the air duct (201) and the fixing plate (209) and the split pump body (1).
5. A multi-stage double suction split pump as claimed in claim 1 wherein: the dehydration membrane (208) is made of waterproof and breathable membranes, the fixing plate (209) is provided with two groups, and the air duct (201) penetrates through and extends to the position of the distribution plate in the split pump body (1).
6. A multi-stage double suction split pump as claimed in claim 1 wherein: the one-way valve (202) only allows fluid to flow into the split pump body (1), and the fixing plate (209) is of annular structural design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321696957.5U CN220059915U (en) | 2023-06-29 | 2023-06-29 | Multistage double-suction split pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321696957.5U CN220059915U (en) | 2023-06-29 | 2023-06-29 | Multistage double-suction split pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220059915U true CN220059915U (en) | 2023-11-21 |
Family
ID=88760935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321696957.5U Active CN220059915U (en) | 2023-06-29 | 2023-06-29 | Multistage double-suction split pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220059915U (en) |
-
2023
- 2023-06-29 CN CN202321696957.5U patent/CN220059915U/en active Active
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