CN223104785U - A vortex magnetic pump for reducing axial movement of pump shaft - Google Patents
A vortex magnetic pump for reducing axial movement of pump shaftInfo
- Publication number
- CN223104785U CN223104785U CN202422525668.XU CN202422525668U CN223104785U CN 223104785 U CN223104785 U CN 223104785U CN 202422525668 U CN202422525668 U CN 202422525668U CN 223104785 U CN223104785 U CN 223104785U
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- China
- Prior art keywords
- pump
- pump shaft
- sliding bearing
- magnetic rotor
- shaft
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Abstract
本实用新型属于非变容式泵技术领域，涉及一种减小泵轴轴向窜动的旋涡磁力泵，包括泵体和前端盖、叶轮、泵轴、电机、内磁转子、外磁转子、隔离套、滑动轴承总成、第一挡圈和第二挡圈，泵体的前端开设容腔，叶轮设置在容腔中；泵轴通过滑动轴承总成安装在泵体内，泵轴的一端连接叶轮，叶轮具有沿轴向的活动余量，泵轴的另一端连接内磁转子；外磁转子安装在电机的电机轴上，隔离套位于内磁转子与外磁转子之间；泵轴上靠近叶轮的一端设有限位台，第一挡圈安装在滑动轴承总成与限位台之间，第二挡圈设置在内磁转子与滑动轴承总成之间。本申请不需要安装止推轴承，可以避免滑动轴承与止推轴承之间的径向摩擦问题，降低了生产和维护成本。
The utility model belongs to the technical field of non-variable displacement pumps, and relates to a vortex magnetic pump for reducing the axial movement of a pump shaft, including a pump body and a front end cover, an impeller, a pump shaft, a motor, an inner magnetic rotor, an outer magnetic rotor, a spacer sleeve, a sliding bearing assembly, a first retaining ring and a second retaining ring. A chamber is provided at the front end of the pump body, and the impeller is arranged in the chamber; the pump shaft is installed in the pump body through a sliding bearing assembly, one end of the pump shaft is connected to the impeller, and the impeller has an axial movable margin, and the other end of the pump shaft is connected to the inner magnetic rotor; the outer magnetic rotor is installed on the motor shaft of the motor, and the spacer sleeve is located between the inner magnetic rotor and the outer magnetic rotor; a limit table is provided at one end of the pump shaft close to the impeller, the first retaining ring is installed between the sliding bearing assembly and the limit table, and the second retaining ring is arranged between the inner magnetic rotor and the sliding bearing assembly. The present application does not need to install a thrust bearing, can avoid the radial friction problem between the sliding bearing and the thrust bearing, and reduces the production and maintenance costs.
Description
Technical Field
The utility model relates to a vortex magnetic pump for reducing axial movement of a pump shaft, and belongs to the technical field of non-positive displacement pumps.
Background
The vortex magnetic pump is used as a key fluid conveying device and widely applied to occasions requiring no leakage, corrosion resistance and high-efficiency transmission. When the vortex magnetic pump is operated, the flow condition of liquid is complex in the impeller, especially the change of the flow direction of the liquid can inevitably generate axial thrust, and if the axial thrust is not effectively absorbed or balanced, the operation stability of the centrifugal pump can be directly influenced, even vibration, noise and damage of mechanical parts are caused, and the service life and efficiency of the pump are seriously influenced. In order to cope with the axial thrust problem, the existing solution is to mount the driven shaft through a sliding bearing for receiving radial load and a thrust bearing mainly for receiving axial load, and when axial thrust is generated, the thrust bearing can balance the axial thrust.
However, during the use, the thrust bearing assembly and the sliding bearing assembly have radial friction, so that parts of the thrust bearing assembly and the sliding bearing assembly are worn, periodic maintenance is required, and the production and maintenance costs are increased.
Disclosure of utility model
The present utility model aims to provide a new technical solution to improve or solve the technical problems existing in the prior art as described above.
The technical scheme is that the vortex magnetic pump capable of reducing axial movement of a pump shaft comprises a pump body, a front end cover, an impeller, a pump shaft, a motor, an inner magnetic rotor, an outer magnetic rotor, a spacer sleeve, at least one sliding bearing assembly, a first retainer ring and a second retainer ring, wherein the front end of the pump body is provided with a containing cavity, the impeller is arranged in the containing cavity, the pump shaft is arranged in the pump body through the sliding bearing assembly, the sliding bearing assembly is used for supporting the pump shaft to rotate, one end of the pump shaft is connected with the impeller, the impeller is provided with a movable allowance along the axial direction, the other end of the pump shaft is connected with the inner magnetic rotor, the outer magnetic rotor is arranged on a motor shaft of the motor, the spacer sleeve is positioned between the inner magnetic rotor and the outer magnetic rotor, the open end of the spacer sleeve is fixed on the pump body, the outer magnetic rotor and the inner magnetic rotor are in non-contact transmission through magnetic force, one end of the impeller, which is close to the impeller, is arranged on one end of the sliding bearing assembly, the first retainer ring and the second retainer ring can not rotate along with the sliding bearing assembly, and the first retainer ring and the second retainer ring can not rotate along with the sliding bearing assembly.
Compared with the prior art, the axial thrust generated by liquid flow is balanced and absorbed only through the movable allowance of the impeller along the axial direction while the pump shaft is supported to rotate by the first check ring and the second check ring which are matched with the sliding bearing assembly, so that the thrust bearing is not required to be installed, the radial friction problem between the sliding bearing and the thrust bearing can be effectively avoided, the production cost is reduced, the cost performance of the pump is improved, and the maintenance cost is reduced.
On the basis of the technical scheme, the utility model can be improved as follows.
Further, the impeller is mounted at the front end of the pump shaft by a key.
The beneficial effect of adopting above-mentioned further scheme is, installs the impeller through the mode of key connection, and when liquid flow produced circumference thrust, the impeller can be along the pump shaft removal balanced thrust, and the stability and the reliability of impeller in the high-speed rotation in-process can also be ensured to the mode of key connection simultaneously.
Further, the sliding bearing assembly comprises a sliding bearing seat, a sliding bearing and a shaft sleeve, wherein the sliding bearing seat is fixed on the pump body, the shaft sleeve is sleeved on the pump shaft, and the sliding bearing is arranged between the sliding bearing seat and the shaft sleeve.
The further scheme has the beneficial effects that when the sliding bearing is in operation, an oil film with a certain thickness is generated between the sliding bearing and the shaft sleeve, and the oil film can play a role in supporting the shaft and reducing friction and abrasion.
Further, the pump further comprises a sheath, wherein the sheath is sleeved on the pump shaft, and the sheath is positioned between the pump shaft and the sliding bearing assembly.
The beneficial effect of adopting above-mentioned further scheme is, the setting of sheath has not only strengthened the support and the protection of pump shaft, has still played dustproof, antifouling effect, has prevented that outside impurity from getting into slide bearing assembly inside to guaranteed the cleanliness and the running accuracy of bearing, reduced trouble and the maintenance number of times that lead to because of impurity invasion.
Further, the motor pump further comprises a bracket, one end of the bracket is connected with the pump body, and the other end of the bracket is connected with a flange of the motor.
The beneficial effect of adopting above-mentioned further scheme is, the design of bracket has strengthened the joint strength between the pump body and the motor, has ensured stability and the security of whole vortex magnetic drive pump in the operation in-process. Meanwhile, the pump is convenient to install and detach, and the maintenance efficiency is improved.
Further, a cooling channel is further formed in the pump body and is communicated with the inner cavity of the isolation sleeve, the inside of the pump shaft is of a hollow structure, and the cavity of the pump body is communicated with the inner cavity of the isolation sleeve through the cooling channel and the hollow structure inside the pump shaft.
The beneficial effect of adopting above-mentioned further scheme is, can guide the liquid drainage of holding intracavity low temperature to the inner chamber of spacer sleeve through cooling channel in, realized the effective cooling to spacer sleeve and inside, outer magnetic rotor work area, reduced the demagnetizing risk that magnetic rotor leads to because of the high temperature, simultaneously, the liquid after the cooling flows back to holding the chamber through the inside hollow structure of pump shaft in, has formed a closed loop's cooling circulation system.
Further, two ends of the inner magnetic rotor are mounted on the pump shaft in a limiting mode through nuts and the second check ring.
The adoption of the further scheme has the beneficial effects that the limit installation mode ensures the accurate positioning and stable connection of the inner magnetic rotor on the pump shaft, and avoids the shaking and the offset of the inner magnetic rotor in the high-speed rotation process, thereby ensuring the accuracy and the reliability of magnetic transmission.
Further, a retaining washer is also provided between the nut and the inner magnetic rotor.
The technical scheme has the advantages that the anti-loosening washer prevents the nut from loosening and falling off in the process of pump shaft vibration or long-time operation, the stability of the connection of the inner magnetic rotor and the pump shaft is enhanced, and the long-term stable operation of the pump is ensured.
Further, the device comprises a plurality of sliding bearing assemblies, and a spacer sleeve is arranged between two adjacent sliding bearing assemblies.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a perspective view of a vortex magnetic pump of the present utility model for reducing axial play of a pump shaft;
FIG. 2 is a cross-sectional view of a vortex magnetic pump of the present utility model that reduces axial play of a pump shaft;
1 part of the pump body, 2 parts of the front end cover, 3 parts of the impeller, 41 parts of the first retainer ring, 42 parts of the second retainer ring, 5 parts of the sliding bearing assembly, 51 parts of the sliding bearing seat, 52 parts of the sliding bearing, 53 parts of the shaft sleeve, 6 parts of the limiting table, 7 parts of the motor, 8 parts of the inner magnetic rotor, 9 parts of the outer magnetic rotor, 10 parts of the isolating sleeve, 11 parts of the bracket, 12 parts of the nut, 13 parts of the anti-return washer, 14 parts of the pump shaft, 15 parts of the sheath.
Detailed Description
The ordinal numbers, such as "first," "second," etc., used herein to distinguish between the described objects are not intended to imply any order of preference or technical significance. Furthermore, references to "connected" and "coupled" concepts in this disclosure are intended to include both direct connection (coupling) and indirect connection (coupling), unless specifically indicated otherwise.
In interpreting the description of the present application, it is necessary to specify the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., all based on the view angles and layouts shown in the drawings, so as to facilitate the description and simplify the description process, and not to absolutely define the actual orientation, configuration, and operation modes of the device or element. Therefore, these terms should not be construed as limiting the interpretation of this summary.
The principles and features of the present utility model are described below in connection with examples, which are set forth only to illustrate the present utility model and not to limit the scope of the utility model.
As shown in fig. 1 and 2, the vortex magnetic pump for reducing axial movement of a pump shaft comprises a pump body 1 and a front end cover 2, wherein the front end cover 2 is detachably arranged at the front end of the pump body 1, the vortex magnetic pump further comprises an impeller 3, a pump shaft 14, a motor 7, an inner magnetic rotor 8, an outer magnetic rotor 9, a spacer sleeve 10, at least one sliding bearing assembly 5, a first check ring 41 and a second check ring 42, a containing cavity is formed at the front end of the pump body 1, the impeller 3 is arranged in the containing cavity, the pump shaft 14 is arranged in the pump body 1 through the sliding bearing assembly 5, the sliding bearing assembly 5 is used for supporting the pump shaft 14 to rotate, one end of the pump shaft 14 is connected with the impeller 3, the impeller 3 is provided with a movable allowance along the axial direction, the other end of the pump shaft 14 is connected with the inner magnetic rotor 8, the outer magnetic rotor 9 is arranged on a motor 7 shaft of the motor 7, the spacer sleeve 10 is positioned between the inner magnetic rotor 8 and the outer magnetic rotor 9, the end of the spacer sleeve 10 is fixed on the pump body 1, the inner magnetic rotor 9 is arranged between the second check ring 9 and the second check ring 42 and the inner magnetic rotor 8, the second magnetic rotor 4 can be arranged between the second magnetic rotor 2 and the inner magnetic rotor 9 and the first magnetic rotor 4 and the second magnetic rotor 4 along with the second magnetic rotor 4, and the second magnetic rotor 4 can rotate along with the axial direction, and the second magnetic rotor 4 is arranged between the spacer assembly 4 and the second magnetic rotor 2 and the inner magnetic rotor 4 and the second magnetic rotor 2.
More specifically, the impeller 3 is mounted at the front end of the pump shaft 14 by a key, and the impeller 3 is mounted by a key connection manner, so that when the liquid flows to generate circumferential thrust, the impeller 3 can move along the pump shaft 14 to balance the thrust, and meanwhile, the stability and reliability of the impeller 3 in the high-speed rotation process can be ensured by the key connection manner.
The sliding bearing assembly 5 comprises a sliding bearing seat 51, a sliding bearing 52 and a shaft sleeve 53, wherein the sliding bearing seat 51 is fixed on the pump body 1, the shaft sleeve 53 is sleeved on the pump shaft 14, and the sliding bearing 52 is arranged between the sliding bearing seat 51 and the shaft sleeve 53. When in operation, a certain thickness of oil film is generated between the sliding bearing and the shaft sleeve, and the layer of oil film can play a role in supporting the shaft and reducing friction and abrasion.
The vortex magnetic pump capable of reducing axial movement of the pump shaft further comprises a sheath 15, the sheath 15 is sleeved on the pump shaft 14, the sheath 15 is positioned between the pump shaft 14 and the sliding bearing assembly 5, the sheath 15 not only enhances the support and protection of the pump shaft 14, but also plays roles of dust prevention and pollution prevention, and external impurities are prevented from entering the sliding bearing assembly 5, so that the cleanliness and operation precision of the bearing are ensured, and faults and maintenance times caused by impurity invasion are reduced.
The vortex magnetic pump for reducing axial play of the pump shaft further comprises a bracket 11, one end of the bracket 11 is connected with the pump body 1, and the other end of the bracket 11 is connected with a flange of the motor 7. The design of the bracket 11 enhances the connection strength between the pump body 1 and the motor 7, and ensures the stability and safety of the whole vortex magnetic pump in the operation process. Meanwhile, the pump is convenient to install and detach, and the maintenance efficiency is improved.
The pump body 1 is further provided with a cooling channel, the cooling channel is communicated with the inner cavity of the isolation sleeve 10, the inside of the pump shaft 14 is of a hollow structure, and the cavity of the pump body 1 is communicated with the inner cavity of the isolation sleeve 10 through the cooling channel and the hollow structure inside the pump shaft 14. The liquid with low temperature in the cavity can be guided to flow into the inner cavity of the isolation sleeve 10 through the cooling channel, so that the isolation sleeve 10 and the working areas of the inner magnetic rotor 9 and the outer magnetic rotor 9 are effectively cooled, the demagnetizing risk of the magnetic rotor caused by high temperature is reduced, and meanwhile, the cooled liquid flows back to the cavity through the hollow structure in the pump shaft 14, so that a closed-loop cooling circulation system is formed.
Two ends of the inner magnetic rotor 8 are mounted on the pump shaft 14 in a limiting mode through nuts 12 and second check rings 42. The limiting installation mode ensures the accurate positioning and stable connection of the inner magnetic rotor 8 on the pump shaft 14, and avoids the shaking and the offset of the inner magnetic rotor 8 in the high-speed rotation process, thereby ensuring the accuracy and the reliability of magnetic transmission.
A retaining washer 13 is also provided between the nut 12 and the inner magnetic rotor 8. The anti-back-off washer 13 prevents the nut 12 from loosening and falling off during the vibration or long-time running of the pump shaft 14, enhances the connection stability of the inner magnetic rotor 8 and the pump shaft 14, and ensures the long-term stable running of the pump.
The number of the slide bearing assemblies 5 is not particularly limited in the embodiment of the present utility model, and one or more slide bearing assemblies 5 may be disposed according to actual needs. In the case where the pump shaft is relatively short, only one slide bearing assembly 5 may be installed in order to ensure the coaxiality of the pump shaft, improve the rotation accuracy, and reduce the coaxiality tolerance accumulation due to the fixation of the two bearings. However, when the pump shaft is long, in order to enhance the supporting effect, to ensure stable operation of the pump shaft, a plurality of slide bearing assemblies 5 may be installed. In these cases, a spacer sleeve (not shown in the drawings) should be provided between two adjacent slide bearing assemblies 5 to separate them and maintain an appropriate distance, which can not only effectively disperse the load, but also avoid potential problems caused by direct contact between the bearings, such as increased friction, increased temperature, etc., thereby further ensuring long-term stable operation of the pump.
According to the utility model, the first check ring 41 and the second check ring 42 are matched with the sliding bearing assembly 5, so that the pump shaft 14 is supported to rotate and the axial movement of the pump shaft 14 is limited, and the axial thrust generated by the liquid flow is balanced and absorbed only through the movable allowance of the impeller 3 along the axial direction, so that the thrust bearing is not required to be installed, the radial friction problem between the sliding bearing and the thrust bearing can be effectively avoided, the production cost is reduced, the cost performance of the pump is improved, and the maintenance cost is reduced.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (9)
1. The vortex magnetic pump capable of reducing axial movement of a pump shaft comprises a pump body (1) and a front end cover (2), wherein the front end cover (2) is detachably arranged at the front end of the pump body (1), and is characterized by further comprising an impeller (3), a pump shaft (14), a motor (7), an inner magnetic rotor (8), an outer magnetic rotor (9), an isolation sleeve (10), at least one sliding bearing assembly (5), a first retainer ring (41) and a second retainer ring (42), a cavity is formed in the front end of the pump body (1), the impeller (3) is arranged in the cavity, the pump shaft (14) is arranged in the pump body (1) through the sliding bearing assembly (5), the sliding bearing assembly (5) is used for supporting the pump shaft (14) to rotate, one end of the pump shaft (14) is connected with the impeller (3), the other end of the pump shaft (14) is provided with a movable allowance along the axial direction, the inner magnetic rotor (8), the outer magnetic rotor (9) is arranged on the motor (7), the rotor (10) is arranged on the motor shaft (7), the rotor (10) is arranged between the rotor (8) and the isolation sleeve (1), the outer magnetic rotor (9) and the inner magnetic rotor (8) are in non-contact transmission through magnetic force, a limit table (6) is arranged at one end, close to the impeller (3), of the pump shaft (14), a first check ring (41) is arranged between the sliding bearing assembly (5) and the limit table (6), a second check ring (42) is arranged between the inner magnetic rotor (8) and the sliding bearing assembly (5), and the first check ring (41) and the second check ring (42) can rotate along with the pump shaft (14) and cannot move along the pump shaft (14).
2. The vortex magnetic pump for reducing axial play of a pump shaft according to claim 1, characterized in that the impeller (3) is mounted at the front end of the pump shaft (14) by means of a key.
3. The vortex magnetic pump for reducing axial play of a pump shaft according to claim 2, characterized in that the sliding bearing assembly (5) comprises a sliding bearing seat (51), a sliding bearing (52) and a shaft sleeve (53), the sliding bearing seat (51) is fixed on the pump body (1), the shaft sleeve (53) is sleeved on the pump shaft (14), and the sliding bearing (52) is arranged between the sliding bearing seat (51) and the shaft sleeve (53).
4. A vortex magnetic pump for reducing axial play of a pump shaft according to claim 3, characterized in that it further comprises a sheath (15), said sheath (15) being arranged over said pump shaft (14) and said sheath (15) being located between said pump shaft (14) and said sliding bearing assembly (5).
5. The vortex magnetic pump for reducing axial play of a pump shaft according to claim 1, further comprising a bracket (11), wherein one end of the bracket (11) is connected with the pump body (1), and the other end of the bracket (11) is connected with a flange of the motor (7).
6. The vortex magnetic pump for reducing axial play of pump shaft according to claim 1, characterized in that the pump body (1) is further provided with a cooling channel, the cooling channel is communicated with the inner cavity of the isolation sleeve (10), the interior of the pump shaft (14) is of a hollow structure, and the cavity of the pump body (1) is communicated with the inner cavity of the isolation sleeve (10) through the cooling channel and the hollow structure in the pump shaft (14).
7. The vortex magnetic pump for reducing axial play of a pump shaft according to claim 1, characterized in that two ends of the inner magnetic rotor (8) are mounted on the pump shaft (14) in a limiting manner through a nut (12) and the second retainer ring (42).
8. The vortex magnetic pump for reducing axial play of a pump shaft according to claim 7, characterized in that a retaining washer (13) is also present between the nut (12) and the inner magnetic rotor (8).
9. The vortex magnetic pump for reducing axial play of a pump shaft according to claim 1, characterized in that it comprises a plurality of sliding bearing assemblies (5), and a spacer sleeve is arranged between two adjacent sliding bearing assemblies (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422525668.XU CN223104785U (en) | 2024-10-18 | 2024-10-18 | A vortex magnetic pump for reducing axial movement of pump shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422525668.XU CN223104785U (en) | 2024-10-18 | 2024-10-18 | A vortex magnetic pump for reducing axial movement of pump shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223104785U true CN223104785U (en) | 2025-07-15 |
Family
ID=96339613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422525668.XU Active CN223104785U (en) | 2024-10-18 | 2024-10-18 | A vortex magnetic pump for reducing axial movement of pump shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223104785U (en) |
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2024
- 2024-10-18 CN CN202422525668.XU patent/CN223104785U/en active Active
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