CN109578319B - Miniature dynamic seal circulating pump device suitable for conveying medium containing particles and impurities - Google Patents
Miniature dynamic seal circulating pump device suitable for conveying medium containing particles and impurities Download PDFInfo
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- CN109578319B CN109578319B CN201710897847.8A CN201710897847A CN109578319B CN 109578319 B CN109578319 B CN 109578319B CN 201710897847 A CN201710897847 A CN 201710897847A CN 109578319 B CN109578319 B CN 109578319B
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- pump
- impeller
- pump shaft
- cover
- shaft
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- 239000012535 impurity Substances 0.000 title claims abstract description 9
- 239000002245 particle Substances 0.000 title abstract description 10
- 238000005086 pumping Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 238000005461 lubrication Methods 0.000 claims description 7
- 230000003068 static effect Effects 0.000 claims description 5
- 239000004519 grease Substances 0.000 claims description 4
- 239000008187 granular material Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Abstract
The invention relates to a miniature dynamic seal circulating pump device suitable for conveying a medium containing particles and impurities, which comprises a water conservancy overflow unit, a driving unit and a dynamic seal assembly, wherein the water conservancy overflow unit comprises a pump body, an impeller, a pump cover and a pump shaft, a pump cavity is formed between the pump body and the pump cover, the impeller is positioned in the pump cavity and connected on the pump shaft, the pump shaft penetrates through the pump cover to be in transmission connection with the driving unit, a bearing is arranged between the pump shaft and the pump cover, and the dynamic seal assembly comprises an auxiliary impeller arranged on the pump shaft and positioned between the impeller and the pump cover, a front baffle cover arranged between the impeller and the auxiliary impeller and a spiral pumping ring arranged between the pump shaft and the pump cover. Compared with the prior art, the invention has the advantages of long service life, wide application range, easy operation and use and the like.
Description
Technical Field
The invention relates to a circulating pump device, in particular to a miniature dynamic seal circulating pump device suitable for conveying a medium containing particles and impurities.
Background
The sealing mode of the miniature dynamic sealing circulating pump capable of conveying the particle-containing medium belongs to one of dynamic sealing, and the conventional dynamic sealing is characterized in that the medium is isolated from the atmosphere by a liquid film formed by a movable ring and a static ring, and the pump is required to be filled with the medium during operation, cannot run dry and cannot convey the medium containing the particle impurities, and has larger damage probability and higher maintenance cost.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a miniature dynamic seal circulating pump device suitable for conveying a medium containing granular impurities.
The aim of the invention can be achieved by the following technical scheme:
The utility model provides a miniature dynamic seal circulating pump device suitable for carry and contain granule impurity medium, includes water conservancy overflow unit and drive unit, water conservancy overflow unit include the pump body, impeller, pump cover and pump shaft, form the pump chamber between pump body and the pump cover, the impeller is located in the pump chamber and connects on the pump shaft, the pump shaft passes pump cover and drive unit transmission and is connected, is equipped with bearing between pump shaft and the pump cover, the device still includes power seal assembly, power seal assembly including installing on the pump shaft and be located the impeller and the auxiliary impeller between the pump cover, set up the front shield between impeller and auxiliary impeller and set up the spiral pumping ring between pump shaft and pump cover.
Preferably, the carrier bearing is arranged on the side of the helical pumping ring facing the drive unit.
Preferably, the load bearing is a deep groove ball bearing.
Preferably, the deep groove ball bearing adopts a closed grease lubrication bearing.
Preferably, the spiral pumping ring comprises an external thread arranged on the pump shaft and a static part arranged on the pump cover, wherein the external thread rotates along with the pump shaft and is matched with the inner surface of the static part, so as to isolate the medium from contacting with the secondary air source protection cavity during operation.
Preferably, the impeller is of a back vane structure, and the sum of sealing pressure heads generated by the back vane and the auxiliary impeller is larger than the outlet pressure of the pump body when the impeller works, so that a gas-liquid mixing area in the pump body is positioned at the center of the vane of the auxiliary impeller.
Preferably, the driving unit comprises a middle frame connected to the pump cover and a motor connected to the middle frame, and the motor is in transmission connection with the pump shaft through a single-diaphragm coupler.
According to the invention, the pump body and the impeller do work on a conveying medium, the auxiliary impeller and the spiral pumping ring are used for isolating the contact between the medium and the atmosphere, the impeller with the back vane structure is matched with the auxiliary impeller, in the operation process, the particle-containing medium is positioned in a gas-liquid mixing area at the hub of the auxiliary impeller, the traditional mechanical seal is canceled, and the spiral pumping ring arranged at the pump cover is used for isolating the contact between the medium and the bearing, so that the invention does not need the lubrication of the medium, improves the efficiency of the magnetic pump, and prevents the particle-containing medium from corroding, scouring and damaging the deep groove ball bearing, the single-diaphragm coupling and the motor.
The invention utilizes the closed grease lubrication bearing as the bearing, does not need maintenance and cooling lubrication, and solves the problem that the ceramic bearing of the magnetic pump needs forced lubrication.
The invention seals the medium and the atmosphere by means of non-contact power seal, and seals the medium containing particles at the gas-liquid two-phase position of the auxiliary impeller, thereby solving the friction loss of the traditional seal.
The output shaft of the motor is in transmission connection with the pump shaft by adopting the single-diaphragm coupler, so that a point axis dislocation exists between the two shafts, and larger axial load and radial load cannot be generated.
Compared with the prior art, the invention has the following beneficial effects:
(1) The service life is long: besides the bearing, other parts are contactless, can run in idle mode, can run in liquid breaking mode and can run in small flow, and the parts are not damaged due to improper operation of a user. The power sealing parts are made of wear-resistant stainless steel and have long service life.
(2) The application range is wide: because the components in the pump have no friction and lubrication, and the medium is in the gas-liquid mixing area of the impeller and the auxiliary impeller during operation, the medium with harsh working conditions, such as medium containing particles, medium easy to vaporize, medium with high temperature, medium with low temperature and the like, can be conveyed on the basis of ensuring the performance of the pump.
(3) Easy to operate and use: the invention is not only applicable to severe working conditions, but also has no special operation requirement and is easy to use.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
Fig. 2 is a schematic structural view of the helical pumping ring of the present invention.
In the figure, 1 is a pump body, 2 is an impeller, 3 is a front baffle cover, 4 is an auxiliary impeller, 5 is a pump cover, 6 is a spiral pumping ring, 7 is a deep groove ball bearing, 8 is a pump shaft, 9 is a middle frame, 10 is a single-diaphragm coupling, 11 is a motor, and 12 is an external thread.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples.
Example 1
The utility model provides a miniature dynamic seal circulating pump device suitable for carry and contain granule impurity medium, as shown in fig. 1, including the water conservancy overflows the unit, drive unit and power seal assembly, the water conservancy overflows the unit and includes pump body 1, impeller 2, pump cover 5 and pump shaft 8, form the pump chamber between pump body 1 and the pump cover 5, impeller 2 is located in the pump chamber and connects on pump shaft 8, pump shaft 8 passes pump cover 5 and drive unit transmission and is connected, be equipped with the bearing between pump shaft 8 and the pump cover 5, power seal assembly is including installing on pump shaft 8 and be located impeller 2 and the side impeller 4 between pump cover 5, the preceding fender lid 3 of setting between impeller 2 and side impeller 4 and set up the spiral pumping ring 6 between pump shaft 8 and pump cover 5.
The drive unit of this embodiment comprises an intermediate frame 9 connected to the pump cover 5 and a motor 11 connected to the intermediate frame 9, the motor 11 being in driving connection with the pump shaft 8 via a single-diaphragm coupling 10.
In this embodiment, the carrier bearing is arranged on the side of the helical pumping ring 6 facing the drive unit. The carrier bearing is optionally a deep groove ball bearing 7 and a closed grease lubricated bearing is employed.
As shown in fig. 2, the spiral pumping ring 6 of the present embodiment includes an external thread 12 provided on the pump shaft 8 and a stationary member provided on the pump cover 5, the external thread 12 rotating with the pump shaft 8 and cooperating with an inner surface of the stationary member for isolating the medium from contact with the secondary air source protection chamber during operation. The stationary member may be the pump cap 5 itself or may be a separate component from the pump cap. The external thread is designed according to the rotation direction of the pump, when the pump rotates clockwise from the motor end, the external thread rotates left, and when the pump rotates anticlockwise from the motor end, the external thread rotates right.
The impeller 2 of the embodiment is an impeller with a back vane structure, and the sum of sealing pressure heads generated by the back vane and the auxiliary impeller 4 is larger than the outlet pressure of the pump body 1 when in operation, so that a gas-liquid mixing area in the pump body 1 is positioned at the center of the vane of the auxiliary impeller 4. If the back vane and the seal head generated by the secondary impeller 4 cannot counteract the outlet pressure, the secondary impeller 4 may be further increased. The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present invention. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present invention.
Claims (1)
1. The utility model provides a miniature dynamic seal circulating pump device suitable for carry and contain granule impurity medium, includes water conservancy overflow unit and drive unit, water conservancy overflow unit include pump body (1), impeller (2), pump cover (5) and pump shaft (8), form the pump chamber between pump body (1) and pump cover (5), impeller (2) are located the pump chamber and connect on pump shaft (8), pump shaft (8) pass pump cover (5) and drive unit transmission connection, be equipped with bearing between pump shaft (8) and pump cover (5), characterized in that, the device still includes power seal assembly, power seal assembly include install on pump shaft (8) and be located auxiliary impeller (4) between impeller (2) and pump cover (5), set up front shield (3) between impeller (2) and auxiliary impeller (4) and set up spiral pumping ring (6) between pump shaft (8) and pump cover (5);
Wherein the load bearing is arranged on one side of the spiral pumping ring (6) facing the driving unit;
The bearing is a closed grease lubrication bearing;
The spiral pumping ring (6) comprises an external thread (12) arranged on the pump shaft (8) and a static piece arranged on the pump cover (5), wherein the external thread (12) rotates along with the pump shaft (8) and is matched with the inner surface of the static piece, so as to isolate a medium from contacting with the secondary air source protection cavity during working; the impeller (2) is of a back vane structure, and the sum of sealing pressure heads generated by the back vane and the auxiliary impeller (4) is larger than the outlet pressure of the pump body (1) when the impeller works, so that a gas-liquid mixing area in the pump body (1) is positioned at the center of the vane of the auxiliary impeller (4); the driving unit comprises a middle frame (9) connected to the pump cover (5) and a motor (11) connected to the middle frame (9), and the motor (11) is in transmission connection with the pump shaft (8) through a single-diaphragm coupler (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710897847.8A CN109578319B (en) | 2017-09-28 | Miniature dynamic seal circulating pump device suitable for conveying medium containing particles and impurities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710897847.8A CN109578319B (en) | 2017-09-28 | Miniature dynamic seal circulating pump device suitable for conveying medium containing particles and impurities |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109578319A CN109578319A (en) | 2019-04-05 |
| CN109578319B true CN109578319B (en) | 2024-07-02 |
Family
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220984A (en) * | 2011-07-22 | 2011-10-19 | 李冬庆 | Single stage pump with forced circulation rotation-preventing structure |
| CN103603825A (en) * | 2013-11-25 | 2014-02-26 | 丹东克隆先锋泵业有限公司 | Spindle dry-type-running magnetic drive pump |
| CN203948307U (en) * | 2014-02-27 | 2014-11-19 | 大连振源泵业有限公司 | A kind of centrifugal pump of carrying for containing impurity liquid |
| CN207349161U (en) * | 2017-09-28 | 2018-05-11 | 上海佰诺泵阀有限公司 | Miniature dynamic sealing circulation pump suitable for conveying the medium containing granule foreign |
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220984A (en) * | 2011-07-22 | 2011-10-19 | 李冬庆 | Single stage pump with forced circulation rotation-preventing structure |
| CN103603825A (en) * | 2013-11-25 | 2014-02-26 | 丹东克隆先锋泵业有限公司 | Spindle dry-type-running magnetic drive pump |
| CN203948307U (en) * | 2014-02-27 | 2014-11-19 | 大连振源泵业有限公司 | A kind of centrifugal pump of carrying for containing impurity liquid |
| CN207349161U (en) * | 2017-09-28 | 2018-05-11 | 上海佰诺泵阀有限公司 | Miniature dynamic sealing circulation pump suitable for conveying the medium containing granule foreign |
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