CN214499562U - Anti-freezing centrifugal pump - Google Patents
Anti-freezing centrifugal pump Download PDFInfo
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- CN214499562U CN214499562U CN202120764088.XU CN202120764088U CN214499562U CN 214499562 U CN214499562 U CN 214499562U CN 202120764088 U CN202120764088 U CN 202120764088U CN 214499562 U CN214499562 U CN 214499562U
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- pump cover
- pressure reducing
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Abstract
The utility model discloses a centrifugal pump prevents frostbite, including the pump body, pump cover and motor, the motor is connected and is fixed at the pump cover top, pump body top and pump cover are connected, be equipped with elasticity decompression pad between the pump body and the pump cover. Compared with the prior art, the utility model the advantage be: the utility model discloses can solve the frostproofing problem of centrifugal pump, need not turn on the water, need not keep warm, need not increase or change the material of pump and just can solve the frostproofing problem of centrifugal pump, moreover simpler, safety, effective.
Description
Technical Field
The utility model relates to a centrifugal pump especially relates to a centrifugal pump prevents frostbite.
Background
The existing common centrifugal pump has no antifreezing function, and in order to prevent the pump from being frozen, one method is to wrap a pump flowing part with a heat-insulating material for heat insulation, so as to prevent the pump from being frozen due to freezing of water. In addition, if the pump stops working for a long time, water in the pump cavity is discharged to prevent icing and damage the pump, or the overflowing parts such as the pump body and the pump cover are made of plastic materials to prevent damage to the pump overflowing parts during icing.
Because the centrifugal pump is used in a large amount and the use environment is diversified, even a large number of centrifugal pumps are used outdoors. Water used in a pump cavity in winter in the north can freeze when the pump is stopped, and the volume of the frozen water expands and the pressure in the pump cavity increases to damage a pump cover of the pump body. Although the problem of freezing damage of the pump can be solved by stopping the pump and completely discharging water in the pump cavity, the problem cannot be solved by adopting a water discharging method for various reasons, such as an intermittently operated pump and a standby pump, and the problem cannot be solved by adopting the water discharging method when the pump is possibly started at any time. And the other methods are that personnel are not arranged in place, water discharging operation is inconvenient or water discharging is forgotten, and the like. Causing water buildup in the pump chamber to damage the pump. If the pump body and the pump cover are made of plastic materials such as carbon steel or stainless steel, the pump body and the pump cover cannot be cracked due to expansion of high pressure generated by expansion, but the pump body and the pump cover can also be deformed and damaged, so that the whole pump is scrapped. If the pump is wrapped by heat-insulating material to prevent icing, the problem can be solved in a short time, but the pump cavity can be iced under the condition of long pump stopping time or extremely low air temperature.
Therefore, the development of an antifreezing centrifugal pump becomes a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The utility model provides an it is not enough to solve the aforesaid, provides a centrifugal pump prevents frostbite.
The above object of the present invention is achieved by the following technical solutions: the utility model provides a centrifugal pump prevents frostbite, includes the pump body, pump cover and motor, and the motor is connected and is fixed at the pump cover top, pump body top is connected its characterized in that with the pump cover: and an elastic pressure reducing pad is arranged between the pump body and the pump cover.
Furthermore, the bottom surface of the elastic decompression pad is a flat surface, and the top surface of the elastic decompression pad is provided with an elastic bulge, so that a cavity is formed between the elastic decompression pad and the pump cover.
Further, the elastic protrusion is an elastic column.
Furthermore, a pump shaft through hole is formed in the center of the pump cover, a cylindrical portion is arranged on the bottom side of the pump shaft through hole, a pump shaft mechanical seal installation groove is formed in the inner side of the cylindrical portion, a mechanical seal is installed on the cylindrical portion, and a sleeve opening is formed in the middle of the elastic pressure reducing pad and tightly sleeved on the cylindrical portion.
Furthermore, the periphery of the elastic pressure reducing pad is clamped between the pump cover and the pump body, and the pump cover and the pump body are fixedly connected through bolts.
Furthermore, the output shaft of the motor is a pump shaft, and the pump shaft penetrates through the pump cover, the elastic pressure reduction pad and the mechanical seal to enter the pump body and is connected with an impeller.
Furthermore, a water discharge hole is formed in the bottom of the pump cavity of the pump body, and a water discharge bolt is installed on the water discharge hole.
The utility model is characterized in that an elastic pressure reducing gasket made of elastic material is additionally arranged in the pump cavity of the centrifugal pump, namely the position where the pump cover is connected with the pump body, the water in the pump cavity is separated from the pump cover, one surface of the elastic pressure reducing gasket, which is close to the pump cover, is not flat and is not contacted with the water, a plurality of small cavities are formed in the middle, when the pump meets low temperature, if a system pipeline is frozen firstly, the water in a water inlet channel and a water outlet of the pump can be frozen firstly when the water is radiated more quickly than the water, the volume of the water in the water inlet channel and the water outlet of the pump can be increased continuously in the freezing process, partial water is pressed to flow towards the pump cavity, the water in the pump cavity is frozen and expanded continuously, the volume in the pump cavity can be increased continuously, because the elastic pressure reducing gasket is made of high elastic material, the back surface is uneven, the elastic pressure reducing gasket is compressed towards the pump cover direction, the volume in the pump cavity is increased, but the pressure can not rise greatly, and the pressure in the pump cavity can not be over high, therefore, the pump body and the pump cover are protected from being damaged. The pressure relief pad returns to its initial state when the ice in the pump chamber melts.
Compared with the prior art, the utility model the advantage be: the utility model discloses can solve the frostproofing problem of centrifugal pump, need not turn on the water, need not keep warm, need not increase or change the material of pump and just can solve the frostproofing problem of centrifugal pump, moreover simpler, safety, effective.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, an anti-freezing centrifugal pump comprises a pump body 13, a pump cover 11 and a motor 7, wherein the motor 7 is connected and fixed to the top of the pump cover 11, the top of the pump body 13 is connected with the pump cover 11, and the anti-freezing centrifugal pump is characterized in that: and an elastic pressure reducing pad 9 is arranged between the pump body 13 and the pump cover 11.
Furthermore, the bottom surface of the elastic decompression pad 9 is a flat surface, and the top surface is provided with an elastic bulge 12, so that a cavity 10 is formed between the elastic decompression pad 9 and the pump cover 11.
Further, the elastic protrusion 12 is an elastic column.
Furthermore, a pump shaft through hole is formed in the center of the pump cover 11, a cylindrical portion 8 is arranged on the bottom side of the pump shaft through hole, a pump shaft mechanical seal installation groove is formed in the inner side of the cylindrical portion 8, a mechanical seal 2 is installed on the pump shaft mechanical seal installation groove, and a sleeve opening is formed in the middle of the elastic pressure reducing pad 9 and tightly sleeved on the cylindrical portion 8.
Furthermore, the periphery of the elastic decompression pad 9 is clamped between the pump cover 11 and the pump body 13, and the pump cover 11 and the pump body 13 are fixedly connected through bolts 4.
Further, the output shaft of the motor 7 is a pump shaft 1, and the pump shaft 1 passes through the pump cover 11, the elastic pressure reducing pad 9 and the mechanical seal 2 to enter the pump body 13 and is connected with the impeller 5.
Further, a water discharge hole is formed at the bottom of the pump cavity 3 of the pump body 13, and a water discharge bolt 15 is installed.
The utility model is that in the pump cavity of the centrifugal pump, namely the position where the pump cover 11 and the pump body 13 are connected, an elastic decompression pad 9 sheet made of elastic material is additionally arranged, the water in the pump cavity is separated from the pump cover 11, one side of the elastic decompression pad 9 close to the pump cover 11 is not flat and is not contacted with the water, a plurality of small cavities 10 are formed in the middle, when the pump meets low temperature, if the system pipeline is frozen firstly, the water of the water inlet channel 14 and the water outlet 6 of the pump can be frozen firstly as compared with the water for heat dissipation, the volume is continuously increased in the freezing process, part of the water is pressed to the pump cavity to flow, the water in the pump cavity is also continuously frozen and expanded, the volume in the pump cavity can be continuously increased, because the elastic decompression pad 9 is made of high elastic material, and the back is uneven, the water compresses the elastic decompression pad 9 towards the direction of the pump cover 11, the volume in the pump cavity is increased, but the pressure can not be greatly increased, ensure that the pressure in the pump cavity is not too high, thus protecting pump body 13 and pump cover 11 from damage. The pressure relief pad returns to its initial state when the ice in the pump chamber melts.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (7)
1. The utility model provides a centrifugal pump prevents frostbite, includes the pump body, pump cover and motor, and the motor is connected and is fixed at the pump cover top, pump body top is connected its characterized in that with the pump cover: and an elastic pressure reducing pad is arranged between the pump body and the pump cover.
2. The antifreeze centrifugal pump of claim 1, wherein: the bottom surface of the elastic pressure reducing pad is a flat surface, and the top surface of the elastic pressure reducing pad is provided with an elastic bulge, so that a cavity is formed between the elastic pressure reducing pad and the pump cover.
3. The antifreeze centrifugal pump of claim 2, wherein: the elastic bulge is an elastic column.
4. The antifreeze centrifugal pump of claim 1, wherein: the pump cover is characterized in that a pump shaft through hole is formed in the center of the pump cover, a cylindrical portion is arranged on the bottom side of the pump shaft through hole, a mechanical seal installation groove is formed in the inner side of the cylindrical portion, mechanical seals are installed in the mechanical seal installation groove, and a sleeve opening is formed in the middle of the elastic pressure reducing pad and tightly sleeved on the cylindrical portion.
5. An antifreeze centrifugal pump according to any one of claims 1 to 4, wherein: the periphery of the elastic pressure reducing pad is clamped between the pump cover and the pump body, and the pump cover and the pump body are fixedly connected through bolts.
6. The antifreeze centrifugal pump of claim 4, wherein: the output shaft of the motor is a pump shaft, the pump shaft penetrates through the pump cover, the elastic pressure reducing pad and the mechanical seal to enter the pump body, and the pump shaft is connected with an impeller.
7. The antifreeze centrifugal pump of claim 1, wherein: the bottom of the pump cavity of the pump body is provided with a water drainage hole, and a water drainage bolt is installed on the water drainage hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120764088.XU CN214499562U (en) | 2021-04-15 | 2021-04-15 | Anti-freezing centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120764088.XU CN214499562U (en) | 2021-04-15 | 2021-04-15 | Anti-freezing centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214499562U true CN214499562U (en) | 2021-10-26 |
Family
ID=78202946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120764088.XU Active CN214499562U (en) | 2021-04-15 | 2021-04-15 | Anti-freezing centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214499562U (en) |
-
2021
- 2021-04-15 CN CN202120764088.XU patent/CN214499562U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An antifreeze centrifugal pump Effective date of registration: 20230421 Granted publication date: 20211026 Pledgee: Agricultural Bank of China Limited Shanghai Songjiang Sub-branch Pledgor: SHANGHAI CHENGFENG FLUID EQUIPMENT CO.,LTD. Registration number: Y2023980038670 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |