CN215409246U - Low-lift anti-vaporization reverse circulation shield pump - Google Patents
Low-lift anti-vaporization reverse circulation shield pump Download PDFInfo
- Publication number
- CN215409246U CN215409246U CN202120692811.8U CN202120692811U CN215409246U CN 215409246 U CN215409246 U CN 215409246U CN 202120692811 U CN202120692811 U CN 202120692811U CN 215409246 U CN215409246 U CN 215409246U
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- Prior art keywords
- motor
- reverse circulation
- end cover
- rotor
- pump
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- Expired - Fee Related
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- 238000009834 vaporization Methods 0.000 title claims abstract description 13
- 230000008016 vaporization Effects 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 16
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
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Abstract
The utility model provides a low-lift anti-vaporization reverse circulation canned motor pump which comprises the following components in parts by weight: comprises a pump body, a connecting body, a shielding motor and a reverse circulation flange pipeline; the connecting body is arranged between the pump body and the shielding motor; the pump body has an impeller; the connecting body is provided with a secondary impeller; the left side and the right side of the shielding motor are provided with a left end cover and a right end cover; the reverse circulation flange pipeline is arranged on the right end cover; the low-lift anti-vaporization reverse circulation shield pump can prevent the medium from vaporizing when passing through the motor, simultaneously increases the circulation amount of the medium, is easier to reach the lift required by a user, and reduces the leakage point of the whole machine.
Description
Technical Field
The utility model relates to the field of reverse circulation canned motor pumps, in particular to a low-lift anti-vaporization reverse circulation canned motor pump.
Background
In the existing market, the medium which is easy to vaporize is usually adopted by a reverse circulation shield pump, namely, the medium flows from a liquid passing hole of a front end cover to a rear end cover through a gap between a front bearing and a shaft sleeve, a gap between a rotor shield sleeve and a stator shield sleeve and a gap between a rear bearing and the shaft sleeve, and finally returns to a liquid inlet tank, so that the material which is easy to vaporize due to cavitation of the pump is avoided.
As shown in fig. 4, most of the conventional reverse circulation pumps are formed by connecting a pump body with a shielding motor and arranging an impeller to pressurize a medium, and the design of the structure can ensure that the low-lift requirement often cannot meet the required lift, and some liquid with low density and easy vaporization is easy to generate; meanwhile, two discharge holes are formed in the rear end cover and are respectively communicated with the exhaust pipeline and the reverse circulation flange pipeline for exhausting and discharging liquid, leakage points of the whole machine are increased, and meanwhile, the reverse flange with the exhaust tail pipe is easy to collide and leak when being disassembled, assembled and carried, and potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a low-lift anti-vaporization reverse circulation canned motor pump to solve the problems mentioned in the background art.
In order to achieve the above purpose, the utility model provides the following technical scheme:
a low-lift anti-vaporization reverse circulation shield pump comprises a pump body, a connector, a secondary impeller, a shield motor and a reverse circulation flange pipeline;
the pump body is arranged on the left side of the connecting body;
the shielding motor is arranged on the right side of the connecting body; the shielding motor comprises a motor shell and a rotor; the left side and the right side of the shielding motor are respectively provided with a left end cover and a right end cover; the rotor is arranged in the motor shell; the left end of the rotor extends out of the left side of the motor shell;
the connecting body is provided with a liquid passing hole; a first accommodating cavity is formed between the connecting body and the shielding motor; the liquid passing hole is respectively communicated with the interior of the pump body and the first accommodating cavity; the auxiliary impeller is arranged on the first accommodating cavity and connected with the rotor;
the right end cover is provided with a discharge hole; the reverse circulation flange pipeline is arranged on the right end cover and communicated with the discharge hole.
Further describing the utility model, the pump body has an impeller therein; a second accommodating cavity is formed between the pump body and the connecting body; the impeller is arranged on the second containing cavity and connected with the left end of the rotor.
Further describing the present invention, the canned motor further includes a left bearing, a left shaft sleeve, a right bearing, a right shaft sleeve and a stator; the rotor is mounted within the stator; the left bearing is mounted on the left end cover; the right bearing is arranged on the right end cover; the left shaft sleeve is arranged in the left bearing and connected with the left part of the rotor, and the right shaft sleeve is arranged in the right bearing and connected with the right part of the rotor.
For further description of the utility model, the left end and the right end of the motor casing are respectively provided with a first flange and a second flange; the left end cover is connected with the motor shell through the first flange; the right end cover is connected with the motor shell through the second flange.
The utility model has the beneficial effects that:
according to the utility model, the connecting body is arranged on the pump body and the shielding motor, the auxiliary impeller is arranged in the first accommodating cavity between the connecting body and the shielding motor, and the medium entering the connecting body from the pump inlet is pressurized again, so that the medium pressure in the sealed cavity of the connecting body is greater than the medium pressure in the shielding motor, the medium is prevented from being vaporized when passing through the motor, the reverse circulation quantity of the pump is increased, and the product can reach the lift required by a user more easily; the right end cover is provided with a discharge hole, the reverse circulation flange pipeline is arranged on the right end cover and communicated with the discharge hole, so that gas and liquid in the device are discharged to the liquid injection tank through the reverse circulation flange, and the leakage point of the whole machine is reduced.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a partial block diagram of the present invention at location A;
FIG. 3 is a partial block diagram of the present invention at location B;
fig. 4 is a structural diagram of a conventional reverse circulation canned motor pump.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
as shown in fig. 1, a low-lift anti-vaporization reverse circulation canned motor pump comprises a pump body 1, a connector 2, a secondary impeller 3, a canned motor 4 and a reverse circulation flange pipeline 5;
as shown in fig. 1, 2 and 3, the pump body 1 is disposed on the left side of the connection body 2; the shielding motor 4 is arranged on the right side of the connecting body 2; the left side and the right side of the shielding motor 4 are respectively provided with a left end cover 43 and a right end cover 44; the shield motor 4 includes a motor case 41 and a rotor 42; a first flange 411 and a second flange 412 are respectively arranged at the left end and the right end of the motor shell 41; the left end cover 43 is connected with the motor casing 41 through a first flange 411; the right end cover 44 is connected with the motor casing 41 through a second flange 412; the rotor 42 is disposed inside the motor case 41; the left end of the rotor 42 extends out of the left side of the motor casing 41; the pump body 1 is internally provided with an impeller 11; a second accommodating cavity 12 is formed between the pump body 1 and the connecting body 2; the impeller 11 is arranged on the second accommodating cavity 12 and connected with the left end of the rotor 42, and the impeller 11 is driven to rotate by the rotation of the rotor 42 to pressurize the entering medium; the connector 2 is provided with a liquid passing hole 21; a first accommodating cavity 22 is formed between the connecting body 2 and the shielding motor 4; the liquid passing hole 21 is respectively communicated with the interior of the pump body 1 and the first accommodating cavity 22; the connecting body 2 is additionally arranged between the pump body 1 and the shielding motor 4, a first accommodating cavity 22 is formed between the connecting body 2 and the shielding motor 4 in a connecting and installing mode, the auxiliary impeller 3 is arranged on the first accommodating cavity 22 and is connected with the rotor 42, after a medium enters the pump body 1 and is pressurized by the impeller 11, a part of the medium enters the first accommodating cavity 22 through the liquid hole 21, the auxiliary impeller 3 is driven by the rotor 42 to rotate and pressurize, then the medium enters the shielding motor 4, the medium is pressurized again, the medium pressure in the closed cavity of the connecting body 2 is larger than the medium pressure in the shielding motor 4, the medium is prevented from being vaporized when passing through the shielding motor 4, and the reverse circulation amount of the pump is also increased; the shielding motor 4 further comprises a left bearing 46, a left shaft sleeve 47, a right bearing 48, a right shaft sleeve 49 and a stator 45; the rotor 42 is mounted within the stator 45; a left bearing 46 is mounted on the left end cap 43; the right bearing 48 is mounted on the right end cap 44; a left shaft sleeve 47 is arranged in a left bearing 46 and connected with the left part of the rotor 42, and a right shaft sleeve 49 is arranged in a right bearing 48 and connected with the right part of the rotor 42; the right end cover is provided with a discharge hole 441; the reverse circulation flange pipeline 5 is arranged on the right end cover 44 and communicated with the discharge hole 441; the position 5 of the reverse circulation flange pipeline is arranged at the uppermost position which can be reached by the materials in the stator; the right end cover 44 is provided with a discharge hole 441 which is communicated with the reverse circulation flange pipeline 5, a tail pipe on the reverse circulation flange pipeline 5 is omitted, the reverse circulation flange pipeline 5 and the exhaust pipeline are combined into a whole, the reverse circulation flange pipeline 5 on the right end cover 44 simultaneously exhausts and discharges the liquid, so that the leakage points of the whole machine are reduced, and meanwhile, the reverse flange is not easy to collide and leak during dismounting and carrying.
The working principle of the embodiment is as follows:
when a medium is conveyed, after the medium flows through the impeller 11, the rotor rotates to drive the impeller 11 to rotate, so that the medium generates higher pressure under the action of the rotation of the impeller 11, most of the medium is discharged from an outlet at the upper end of the pump body 1, the other part of pressurized liquid flows to the auxiliary impeller 3 through the liquid passing hole 21 of the connecting body 2, the auxiliary impeller 3 re-pressurizes the medium in the closed cavity of the connecting body 2, the pressure of the pressurized medium is greater than the pressure of the medium in the shielding motor 4, and under the pressurization of the auxiliary impeller 3, the medium can not be vaporized, flows to the right end cover 44 through a gap between the rotor shielding sleeve and the stator shielding sleeve, a gap between the left bearing 46 and the left shaft sleeve 47, a gap between the right bearing 48 and the right shaft sleeve 49, and flows out through the reverse circulation flange pipeline 5.
The above description is not intended to limit the technical scope of the present invention, and any modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.
Claims (4)
1. The utility model provides a reverse circulation canned motor pump of vaporization is prevented to low-lift which characterized in that: comprises a pump body, a connector, a secondary impeller, a shielding motor and a reverse circulation flange pipeline;
the pump body is arranged on the left side of the connecting body;
the shielding motor is arranged on the right side of the connecting body; the shielding motor comprises a motor shell and a rotor; the left side and the right side of the shielding motor are respectively provided with a left end cover and a right end cover; the rotor is arranged in the motor shell; the left end of the rotor extends out of the left side of the motor shell;
the connecting body is provided with a liquid passing hole; a first accommodating cavity is formed between the connecting body and the shielding motor; the liquid passing hole is respectively communicated with the interior of the pump body and the first accommodating cavity; the auxiliary impeller is arranged on the first accommodating cavity and connected with the rotor;
the right end cover is provided with a discharge hole; the reverse circulation flange pipeline is arranged on the right end cover and communicated with the discharge hole.
2. The low-lift anti-vaporization reverse circulation canned motor pump according to claim 1, characterized in that: the pump body is internally provided with an impeller; a second accommodating cavity is formed between the pump body and the connecting body; the impeller is arranged on the second containing cavity and connected with the left end of the rotor.
3. The low-lift anti-vaporization reverse circulation canned motor pump according to claim 1, characterized in that: the shielding motor also comprises a left bearing, a left shaft sleeve, a right bearing, a right shaft sleeve and a stator; the rotor is mounted within the stator; the left bearing is mounted on the left end cover; the right bearing is arranged on the right end cover; the left shaft sleeve is arranged in the left bearing and connected with the left part of the rotor, and the right shaft sleeve is arranged in the right bearing and connected with the right part of the rotor.
4. The low-lift anti-vaporization reverse circulation canned motor pump according to claim 1, characterized in that: a first flange and a second flange are respectively arranged at the left end and the right end of the motor shell; the left end cover is connected with the motor shell through the first flange; the right end cover is connected with the motor shell through the second flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120692811.8U CN215409246U (en) | 2021-04-06 | 2021-04-06 | Low-lift anti-vaporization reverse circulation shield pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120692811.8U CN215409246U (en) | 2021-04-06 | 2021-04-06 | Low-lift anti-vaporization reverse circulation shield pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215409246U true CN215409246U (en) | 2022-01-04 |
Family
ID=79670299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120692811.8U Expired - Fee Related CN215409246U (en) | 2021-04-06 | 2021-04-06 | Low-lift anti-vaporization reverse circulation shield pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215409246U (en) |
-
2021
- 2021-04-06 CN CN202120692811.8U patent/CN215409246U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220104 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |