A vortex pump
By using a detachable front cover and adjustment block structure, magnetic contactless transmission, and retaining ring limiting design, the high cost and axial thrust problems of vortex pumps during process changes are solved, enabling flexible adjustment and efficient operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANTAI HUMON PUMP CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-06-02
AI Technical Summary
Existing vortex pumps require complete replacement when facing process changes, resulting in high costs and production interruptions. At the same time, unbalanced axial thrust leads to wear and unstable operation.
The design incorporates a detachable front cover and adjustment block structure, combined with magnetic contactless transmission and retaining ring limiting. The driven shaft is axially fixed, and the impeller has axial movement margin. Flow rate and head can be adjusted by replacing the impeller and front cover. Sliding bearings and thrust bearings reduce radial friction.
It enables flexible adjustment of vortex pumps, reduces maintenance costs and time, improves operational stability and efficiency, and reduces the risk of mechanical wear and liquid leakage.
Smart Images
Figure CN224315192U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a vortex pump, belonging to the field of non-variable displacement pump technology. Background Technology
[0002] Vortex pumps, as a key fluid transport device, are widely used in applications requiring leak-free operation, corrosion resistance, and high-efficiency transmission. However, with continuous optimization and adjustment of production processes, process changes have become commonplace. These changes often require pump systems to adapt to different media characteristics, flow rates, and head requirements, which may lead to existing pump models no longer meeting the new process requirements. The traditional approach is to directly replace the entire pump to adapt to the new operating conditions.
[0003] However, this direct replacement method has many drawbacks: First, it involves a complex disassembly and installation process, which is not only time-consuming and labor-intensive, but may also interrupt the continuous operation of the production line, affecting production efficiency and capacity; second, replacing the entire pump means that a large amount of money needs to be invested in purchasing new equipment, which increases the company's operating costs and equipment maintenance burden.
[0004] Furthermore, during operation, the complex flow of liquid within the impeller of a vortex pump, especially the change in liquid flow direction, inevitably generates axial thrust. If this axial thrust is not effectively absorbed or balanced, it will directly affect the operational stability of the centrifugal pump, and may even cause vibration, noise, and damage to mechanical components, severely impacting the pump's service life and efficiency. To address the axial thrust problem, existing solutions involve mounting the driven shaft using sliding bearings and thrust bearings. The sliding bearings bear radial loads, while the thrust bearings primarily bear axial loads, balancing the axial thrust. However, during use, radial friction occurs between the thrust bearing assembly and the sliding bearing assembly, causing wear on their components and requiring regular maintenance, which undoubtedly increases production and maintenance costs.
[0005] Therefore, a vortex pump is needed that can be flexibly adjusted to adapt to different process changes, and can also effectively solve the problem of axial thrust balance, reduce wear, and lower maintenance costs. Utility Model Content
[0006] The purpose of this utility model is to provide a new technical solution to improve or solve the technical problems existing in the prior art as described above.
[0007] The technical solution provided by this utility model is as follows: A vortex pump includes a pump body, an adjusting block, a front cover, an impeller, a driven shaft, and a drive mechanism. One end of the driven shaft is connected to the drive mechanism, and the other end of the driven shaft is equipped with the impeller. A cavity is formed on the pump body, and the impeller is disposed in the cavity. The front cover is sealed to the front opening of the cavity. The adjusting block is detachably installed in the cavity. The inner surface of the front cover and the inner surface of the adjusting block form an annular flow channel. A liquid outlet channel is also formed on the pump body, and the liquid outlet channel communicates with the annular flow channel.
[0008] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: When it is necessary to adjust the flow rate or head of the pump, it is no longer necessary to replace the entire pump body. Instead, the front cover can be easily removed, and then the impeller and adjusting block can also be easily removed. Users only need to replace the impeller with one of different sizes and select a front cover and adjusting block that match the replaced impeller to ensure that the size of the annular flow channel is compatible with the size of the impeller. This allows for quick adjustment of the flow rate and head of the vortex pump. This not only simplifies the adjustment process but also greatly reduces maintenance costs and time, because it is no longer necessary to purchase a brand new pump body. Only some components need to be replaced to meet the needs of different process flows.
[0009] Based on the above technical solution, the present invention can be further improved as follows.
[0010] Furthermore, the driven shaft is mounted in the pump body in a manner that allows it to rotate about its own axis but not to move axially, and the impeller is mounted at the end of the driven shaft, the impeller having axial movement allowance.
[0011] The beneficial effect of adopting the above-mentioned further solution is that the driven shaft is restricted from moving axially, while the impeller is installed at the end of the driven shaft and has a certain axial movement margin. This can transfer the function of balancing axial thrust to the impeller and eliminate the radial friction problem caused by the axial movement between the sliding bearing and the thrust bearing.
[0012] Furthermore, it also includes a sliding bearing assembly, a first retaining ring, and a second retaining ring. The driven shaft is mounted in the pump body through the sliding bearing assembly. The first retaining ring and the second retaining ring are mounted on the driven shaft and are located at both ends of the sliding bearing assembly, respectively. The first retaining ring and the second retaining ring can rotate with the driven shaft but cannot move along the driven shaft. The two ends of the sliding bearing assembly are limited by the first retaining ring and the second retaining ring.
[0013] The beneficial effect of adopting the above-mentioned further solution is that by cooperating with the retaining ring and the sliding bearing, the axial movement of the driven shaft is reduced. By setting the movement of the axial thrust to balance the movement on the impeller, the radial friction problem between the sliding bearing and the thrust bearing caused by axial movement can be effectively avoided, while reducing costs and improving the cost performance of the pump.
[0014] Furthermore, the drive mechanism includes a motor, an inner magnetic rotor, an outer magnetic rotor, and an isolation sleeve. The outer magnetic rotor is mounted on the motor shaft of the motor, the inner magnetic rotor is mounted on the driven shaft at the end away from the impeller, the open end of the isolation sleeve is fixed on the pump body, and the isolation sleeve is located between the inner magnetic rotor and the outer magnetic rotor. The outer magnetic rotor and the inner magnetic rotor are driven by magnetic force without contact.
[0015] The beneficial effects of adopting the above-mentioned further solution are that the drive mechanism not only realizes the contactless transmission of the vortex pump, significantly improving the pump's operating efficiency and stability, and reducing mechanical wear and energy loss, but also, through the design of the isolation sleeve, completely isolates the working area outside the isolation sleeve from the liquid inside the pump body, effectively preventing the risk of liquid leakage.
[0016] Furthermore, the impeller includes a disc-shaped hub and a plurality of blades, the blades being evenly spaced radially on the hub, the hub being located within the cavity of the pump body, and the blades being located within the annular flow channel.
[0017] The beneficial effect of adopting the above-mentioned further solution is that, during operation, the liquid flows into the impeller from the pump inlet, and the impeller can transfer mechanical energy to the liquid during rotation. After acceleration, the liquid flows out through the outlet channel. The impeller is not sensitive to pressure fluctuations inside the pump and can carry out gas-liquid mixed transport.
[0018] Furthermore, the inner surface of the front cover is provided with a first annular groove, and the adjusting block is provided with a second annular groove near the inner surface of the front cover. The first annular groove and the second annular groove cooperate to form a double-sided annular flow channel.
[0019] Furthermore, the inner surface of the front cover is provided with an annular groove, and the inner surface of the adjusting block near the inner surface of the front cover is flat. The annular groove on the inner surface of the front cover and the inner surface of the adjusting block cooperate to form a one-sided annular flow channel; or the inner surface of the front cover is flat, and the annular groove on the inner surface of the adjusting block near the inner surface of the front cover is provided. The inner surface of the front cover and the annular groove on the inner surface of the adjusting block cooperate to form a one-sided annular flow channel.
[0020] The above-mentioned further beneficial effects include: by designing annular flow channels with various cross-sectional shapes and optimizing the fit between the flow channels and the impeller, the vortex pump can be adapted to different working conditions.
[0021] Furthermore, the drive mechanism includes a motor and a coupling, wherein the motor is connected to the driven shaft via the coupling.
[0022] Furthermore, a cooling channel is provided on the pump body, and the inner cavity of the isolation sleeve is connected to the annular flow channel through the cooling channel.
[0023] The beneficial effect of adopting the above-mentioned further solution is that the design of the cooling channel enhances the heat dissipation capacity of the pump body, which helps to extend the service life of the pump.
[0024] Furthermore, it also includes a bracket, one end of which is connected to the pump body, and the other end of which is connected to the flange end on the motor.
[0025] The beneficial effect of adopting the above-mentioned further solution is that the bracket is sleeved on the outside of the outer magnetic rotor to provide support, and at the same time facilitates subsequent maintenance and repair work. When it is necessary to replace the pump body or motor components, it can be easily completed by simply disassembling the bracket, which reduces maintenance costs and time. Attached Figure Description
[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0027] Figure 1 This is a three-dimensional structural diagram of the vortex pump of this utility model;
[0028] Figure 2 This is a top view of the vortex pump of this utility model;
[0029] Figure 3 For the present utility model Figure 2 Sectional view along axis AA;
[0030] Figure 4 For the present utility model Figure 3 A magnified structural diagram at point B;
[0031] Figure 5 This is a cross-sectional view of the double-sided annular flow channel of this utility model;
[0032] Figure 6 This is a cross-sectional view of the single-sided annular flow channel of this utility model;
[0033] Figure 7 This is a three-dimensional structural diagram of the impeller of this utility model;
[0034] In the diagram, 1. Pump body; 2. Adjusting block; 3. Front cover; 4. Impeller; 41. Hub; 42. Blade; 51. First retaining ring; 52. Second retaining ring; 6. Motor; 7. Sliding bearing assembly; 8. Inner magnetic rotor; 9. Outer magnetic rotor; 10. Isolation sleeve; 11. Bracket; 12. Liquid outlet channel; 13. Cooling channel; 14. Driven shaft; 15. Double-sided annular flow channel; 151. First annular groove; 152. Second annular groove; 16. Single-sided annular flow channel. Detailed Implementation
[0035] The principles and features of this utility model are described below with reference to examples. The examples are only used to explain this utility model and are not intended to limit the scope of this utility model.
[0036] like Figure 1 - Figure 4 As shown, a vortex pump includes a pump body 1, an adjusting block 2, a front cover 3, an impeller 4, a driven shaft 14, and a drive mechanism. One end of the driven shaft 14 is connected to the drive mechanism, and the other end of the driven shaft 14 is equipped with the impeller 4. A cavity is formed on the pump body 1, and the impeller 4 is disposed in the cavity. The front opening of the cavity is sealed to the front cover 3. The adjusting block 2 is detachably installed in the cavity. The inner surface of the front cover 3 and the inner surface of the adjusting block 2 form an annular flow channel. A liquid outlet channel 12 is also formed on the pump body 1, and the liquid outlet channel 12 communicates with the annular flow channel.
[0037] like Figure 5 and Figure 6 As shown, the cross-sectional shape of the annular flow channel is not limited in the embodiments of this utility model. The cross-sectional shape of the annular flow channel can be a single-sided annular flow channel 16 or a double-sided annular flow channel 15. When the inner surface of the front end cover 3 is provided with a first annular groove 151, and the adjusting block 2 is provided with a second annular groove 152 near the inner surface of the front end cover 3, the first annular groove 151 and the second annular groove 152 cooperate to form a double-sided annular flow channel 15. Alternatively, the inner surface of the front end cover 3 is provided with an annular groove, and the inner surface of the adjusting block 2 near the inner surface of the front end cover 3 is flat. The annular groove on the inner surface of the front end cover 3 and the inner surface of the adjusting block 2 cooperate to form a single-sided annular flow channel 16; or the inner surface of the front end cover 3 is flat, and the adjusting block 2 is provided with an annular groove near the inner surface of the front end cover 3. The inner surface of the front end cover 3 and the annular groove on the inner surface of the adjusting block 2 cooperate to form a single-sided annular flow channel 16.
[0038] The annular flow channel of this vortex pump can be configured according to actual needs. The shape of the annular flow channel can be adjusted by replacing the front cover 3 and the adjusting block 2. At the same time, to ensure optimal pump performance, an impeller 4 that is compatible with the adjusted annular flow channel must also be selected. In this way, the vortex pump can quickly adapt to different working conditions, such as different flow rates, head, or fluid characteristic requirements.
[0039] In this embodiment, the drive mechanism includes a motor 6, an inner magnetic rotor 8, an outer magnetic rotor 9, and an isolation sleeve 10. The outer magnetic rotor 9 is mounted on the motor shaft of the motor 6, and the inner magnetic rotor 8 is mounted on the driven shaft 14 at the end away from the impeller 4. The open end of the isolation sleeve 10 is fixed to the pump body 1, and the isolation sleeve 10 is located between the inner magnetic rotor 8 and the outer magnetic rotor 9. The outer magnetic rotor 9 and the inner magnetic rotor 8 are driven by magnetic force without contact. This drive mechanism not only realizes the contactless transmission of the vortex pump, significantly improving the pump's operating efficiency and stability, and reducing mechanical wear and energy loss, but also, through the design of the isolation sleeve 10, completely isolates the working area outside the isolation sleeve 10 from the liquid inside the pump body 1, effectively preventing the risk of liquid leakage.
[0040] Of course, the drive mechanism can also adopt a structure of motor 6 and coupling, wherein motor 6 is connected to driven shaft 14 through the coupling.
[0041] In this embodiment, the driven shaft 14 is mounted inside the pump body 1 in a manner that allows it to rotate around its own axis but not move axially. The impeller 4 is mounted at the end of the driven shaft 14 and has axial movement allowance. More specifically, the vortex pump also includes a sliding bearing assembly 7, a first retaining ring 51, and a second retaining ring 52. The driven shaft 14 is mounted inside the pump body 1 via the sliding bearing assembly 7. The first retaining ring 51 and the second retaining ring 52 are fixed to the driven shaft 14 and are located at both ends of the sliding bearing assembly 7, respectively. The first retaining ring 51 and the second retaining ring 52 can rotate with the driven shaft 14 but cannot move along the driven shaft 14. The two ends of the sliding bearing assembly 7 are limited and installed by the first retaining ring 51 and the second retaining ring 52. This utility model reduces the axial movement of the driven shaft 14 by using the retaining rings in conjunction with the sliding bearing. By setting the movement that balances the axial thrust on the impeller 4, the radial friction problem caused by axial movement can be effectively avoided, while reducing costs and improving the pump's cost-effectiveness.
[0042] like Figure 7 As shown, in this embodiment, the impeller 4 includes a disc-shaped hub 41 and a plurality of blades 42. The blades 42 are evenly spaced radially on the hub 41. The hub 41 is located in the cavity of the pump body 1, and the blades 42 are located in the annular flow channel.
[0043] The pump body 1 is also provided with a cooling channel 13, and the inner cavity of the isolation sleeve 10 is connected to the annular flow channel through the cooling channel 13. When the motor 6 drives the outer magnetic rotor 9 to rotate, the inner magnetic rotor 8 rotates accordingly and drives the impeller 4 to work. This process generates a certain amount of heat. If heat is not dissipated in time, this heat may accumulate in the pump body 1, which will have an adverse effect on the normal operation of the pump. However, through the design of the cooling channel 13, the coolant in the inner cavity of the isolation sleeve 10 can be introduced into the vicinity of the annular flow channel to exchange heat with the fluid in the pump body 1, remove excess heat, and maintain a relatively stable internal temperature of the pump body 1.
[0044] The vortex pump also includes a bracket 11, one end of which is connected to the pump body 1, and the other end of which is connected to the flange end of the motor 6. The bracket 11 is fitted around the outer magnetic rotor 9 to provide support, and also facilitates subsequent maintenance and repair. When it is necessary to replace the pump body 1 or motor components, it can be easily done by simply disassembling the bracket 11, reducing maintenance costs and time.
[0045] When pump flow rate or head needs adjustment, compared to traditional methods, this invention eliminates the need to replace the entire pump body 1. Users only need to disassemble the front cover 3, and then easily remove the impeller 4 and adjusting block 2. By replacing the impeller 4 with a different size and matching the front cover 3 and adjusting block 2 accordingly, the annular flow channel is ensured to fit the impeller 4. This invention not only quickly achieves flexible adjustment of the vortex pump's flow rate and head but also reduces the complexity and time required for maintenance. Since only some components need to be replaced instead of the entire pump body 1, users do not need to bear high replacement costs, significantly reducing maintenance costs. Furthermore, the vortex pump of this invention allows for modular replacement, enabling it to quickly adapt to different needs in various processes.
[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A vortex pump, comprising a pump body (1), characterized in that, It also includes an adjusting block (2), a front cover (3), an impeller (4), a driven shaft (14), and a drive mechanism. One end of the driven shaft (14) is connected to the drive mechanism, and the other end of the driven shaft (14) is equipped with the impeller (4). A cavity is opened on the pump body (1), and the impeller (4) is disposed in the cavity. The front end opening of the cavity is sealed to the front cover (3). The adjusting block (2) is also detachably installed in the cavity. The inner surface of the front cover (3) and the inner surface of the adjusting block (2) form an annular flow channel. A liquid outlet channel (12) is also opened on the pump body (1), and the liquid outlet channel (12) is connected to the annular flow channel.
2. The vortex pump according to claim 1, characterized in that, The driven shaft (14) is installed in the pump body (1) in a manner that allows it to rotate about its own axis but not to move axially. The impeller (4) is installed at the end of the driven shaft (14) and has axial movement allowance.
3. The vortex pump according to claim 2, characterized in that, It also includes a sliding bearing assembly (7), a first retaining ring (51) and a second retaining ring (52). The driven shaft (14) is installed in the pump body (1) through the sliding bearing assembly (7). The first retaining ring (51) and the second retaining ring (52) are installed on the driven shaft (14) and are respectively located at both ends of the sliding bearing assembly (7). The first retaining ring (51) and the second retaining ring (52) can rotate with the driven shaft (14) but cannot move along the driven shaft (14). The two ends of the sliding bearing assembly (7) are limited and installed by the first retaining ring (51) and the second retaining ring (52).
4. The vortex pump according to claim 3, characterized in that, The drive mechanism includes a motor (6), an inner magnetic rotor (8), an outer magnetic rotor (9), and an isolation sleeve (10). The outer magnetic rotor (9) is mounted on the motor shaft of the motor (6). The inner magnetic rotor (8) is mounted on the driven shaft (14) away from the impeller (4). The open end of the isolation sleeve (10) is fixed on the pump body (1). The isolation sleeve (10) is located between the inner magnetic rotor (8) and the outer magnetic rotor (9). The outer magnetic rotor (9) and the inner magnetic rotor (8) are driven by magnetic force without contact.
5. The vortex pump according to claim 4, characterized in that, The impeller (4) includes a disc-shaped hub (41) and a number of blades (42). The blades (42) are evenly spaced radially on the hub (41). The hub (41) is located in the cavity of the pump body (1), and the blades (42) are located in the annular flow channel.
6. The vortex pump according to any one of claims 1-5, characterized in that, The inner surface of the front cover (3) is provided with a first annular groove (151), and the adjustment block (2) is provided with a second annular groove (152) near the inner surface of the front cover (3). The first annular groove (151) and the second annular groove (152) cooperate to form a double-sided annular flow channel (15).
7. The vortex pump according to any one of claims 1-5, characterized in that, The inner surface of the front cover (3) is provided with an annular groove, and the inner surface of the adjusting block (2) near the front cover (3) is flat. The annular groove on the inner surface of the front cover (3) and the inner surface of the adjusting block (2) cooperate to form a single-sided annular flow channel (16); or the inner surface of the front cover (3) is flat, and the inner surface of the adjusting block (2) near the front cover (3) is provided with an annular groove. The inner surface of the front cover (3) and the annular groove on the inner surface of the adjusting block (2) cooperate to form a single-sided annular flow channel (16).
8. The vortex pump according to any one of claims 1-3, characterized in that, The drive mechanism includes a motor (6) and a coupling, wherein the motor (6) is connected to the driven shaft (14) via the coupling.
9. The vortex pump according to claim 4, characterized in that, The pump body (1) is also provided with a cooling channel (13), and the inner cavity of the isolation sleeve (10) is connected to the annular flow channel through the cooling channel (13).
10. The vortex pump according to claim 9, characterized in that, It also includes a bracket (11), one end of which is connected to the pump body (1), and the other end of which is connected to the flange end on the motor (6).