Petrochemical centrifugal pump polishing device

Abstract

The utility model relates to the field of petrochemical engineering, in particular to a petrochemical engineering centrifugal pump polishing device which comprises a polishing table, a box body arranged at the lower end of the polishing table, supporting legs arranged at the lower end of the box body, a rotating assembly arranged in the box body and used for adjusting the horizontal angle of a centrifugal pump shell, a rotating disc arranged in the rotating assembly, and a groove formed in the upper end of the rotating disc. A clamping assembly for fixing the centrifugal pump shell is arranged in the groove, a lifting assembly is arranged at the upper end of the grinding table, an electric push rod is arranged in the lifting end of the lifting assembly, and a grinding machine is arranged at the telescopic end of the electric push rod and vertically moves through the lifting assembly. According to the grinding machine, the defect of uneven grinding in the manual handheld grinding process is overcome, meanwhile, the grinding machine can adapt to centrifugal pump shells of different sizes, the universality and practicability of the device are improved, in addition, the electric push rod is matched with the lifting assembly, accurate movement of the grinding machine in the vertical direction is achieved, and the grinding efficiency is improved. And the grinding quality and the production efficiency of the centrifugal pump shell can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of petrochemicals, and in particular to a grinding device for centrifugal pumps in the petrochemical industry. Background Technology

[0002] In the petrochemical industry, centrifugal pumps are a commonly used fluid transport device. After the centrifugal pump casing is manufactured, its surface usually has some burrs, unevenness or other defects, which need to be polished to ensure the surface quality and dimensional accuracy of the casing, and improve the overall performance and service life of the centrifugal pump.

[0003] However, traditional centrifugal pump casing polishing mainly relies on manual operation. Workers use hand-held polishing tools to polish the centrifugal pump casing. This manual polishing method has many drawbacks. First, it is difficult to guarantee the uniformity of manual polishing. Due to differences in factors such as the force, angle, and speed of the worker's operation, the surface of the centrifugal pump casing is easily polished unevenly, affecting the appearance and quality of the product. Second, manual polishing is inefficient. For mass-produced centrifugal pump casings, manual polishing requires a lot of time and labor costs, which cannot meet the needs of large-scale production.

[0004] Therefore, in view of the fact that the traditional manual grinding method of centrifugal pump casing is difficult to guarantee uniformity and has low efficiency, and cannot meet the needs of large-scale production, a petrochemical centrifugal pump grinding device can be designed. This device not only avoids the uneven grinding defects that occur when grinding manually by hand, but also saves manpower, thereby effectively improving the grinding quality and production efficiency of centrifugal pump casing. Utility Model Content

[0005] To overcome the problems of traditional manual grinding of centrifugal pump casings, which is difficult to guarantee uniformity and has low efficiency, and cannot meet the needs of large-scale production.

[0006] The technical solution of this utility model is as follows: a grinding device for a petrochemical centrifugal pump, including a grinding table, a housing at the lower end of the grinding table, a support leg at the lower end of the housing, a rotating assembly for adjusting the horizontal angle of the centrifugal pump housing inside the housing, a turntable inside the rotating assembly, a groove at the upper end of the turntable, a clamping assembly for fixing the centrifugal pump housing inside the groove, a lifting assembly at the upper end of the grinding table, an electric push rod inside the lifting end of the lifting assembly, and a grinding machine at the telescopic end of the electric push rod, the grinding machine moving vertically through the lifting assembly.

[0007] Preferably, the rotating assembly includes a first rotating motor, the first rotating motor is installed at the bottom of the housing, the output shaft of the first rotating motor is connected to a drive shaft, the bottom of the housing is provided with a first bearing seat, a support shaft is rotatably connected inside the first bearing seat, the upper end of the support shaft is connected to the lower end of the turntable, and a transmission structure is provided between the drive shaft and the support shaft.

[0008] Preferably, the transmission structure includes a driving bevel gear, a driving bevel gear fixedly connected to the outer wall of the transmission shaft, a driven bevel gear fixedly connected to the outer wall of the rotating shaft, and the driving bevel gear and the driven bevel gear meshing with each other.

[0009] Preferably, the clamping assembly includes a second bearing seat, which is provided on one inner wall of the groove. A bidirectional threaded rod is rotatably connected inside the second bearing seat. A knob is provided at the end of the bidirectional threaded rod. A movable seat is provided on the outer wall of the bidirectional threaded rod. An arc-shaped clamping plate is provided at the end of the movable seat facing the centrifugal pump housing.

[0010] Preferably, a guide rod is fixedly connected inside the groove, and the outer wall of the guide rod is slidably connected to the movable seat.

[0011] Preferably, the lifting assembly includes a support plate, the upper end of the grinding table is provided with the support plate and the No. 3 bearing seat, the No. 3 bearing seat is rotatably connected with a screw, the upper end of the support plate is provided with a No. 2 rotary motor, the output shaft of the No. 2 rotary motor is connected to the upper end of the screw, the outer wall of the screw is threadedly connected with a lifting seat, and the lifting seat is provided with an electric push rod.

[0012] Preferably, the vertical part of the support plate is provided with a slide rail, and one end of the movable seat is provided with a slider that is adapted to the slide rail, and the slider is slidably connected to the slide rail.

[0013] The beneficial effects of this utility model are as follows: Compared with the traditional manual grinding method, this solution allows the centrifugal pump housing to rotate freely during the grinding process through the built-in rotating component, ensuring the uniformity of grinding and avoiding the uneven grinding defects that occur when manually grinding. At the same time, the clamping component can adapt to centrifugal pump housings of different sizes, improving the versatility and practicality of the device. In addition, the cooperation between the electric push rod and the lifting component enables the grinding machine to move precisely in the vertical direction, which is very suitable for fine grinding operations and can effectively improve the grinding quality and production efficiency of centrifugal pump housings. Attached Figure Description

[0014] Figure 1 The diagram shown is a first three-dimensional structural schematic of the grinding device for a petrochemical centrifugal pump according to this utility model.

[0015] Figure 2 The diagram shown is a second three-dimensional structural schematic of the grinding device for a petrochemical centrifugal pump according to this utility model.

[0016] Figure 3 The diagram shown is a three-dimensional structural schematic of the rotating component of the petrochemical centrifugal pump grinding device of this utility model.

[0017] Figure 4 The diagram shown is a three-dimensional structural schematic of the clamping component of the petrochemical centrifugal pump grinding device of this utility model.

[0018] Figure 5 The diagram shown is a three-dimensional structural schematic of the lifting component of the grinding device for a petrochemical centrifugal pump according to this utility model.

[0019] Explanation of reference numerals in the attached diagram: 1. Grinding table; 2. Housing; 3. Support leg; 4. Turntable; 5. Groove; 6. Electric push rod; 7. Grinding machine; 8. Rotary motor No. 1; 9. Bearing seat No. 1; 10. Support shaft; 11. Drive shaft; 12. Driving bevel gear; 13. Driven bevel gear; 14. Guide rod; 15. Support plate; 16. Bearing seat No. 3; 17. Screw; 18. Lifting seat; 19. Slider; 20. Slide rail; 21. Bearing seat No. 2; 22. Bidirectional threaded rod; 23. Knob; 24. Moving seat; 25. Arc-shaped clamp; 26. Rotary motor No. 2. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please see Figure 1 - Figure 5 This utility model provides an embodiment of a grinding device for a petrochemical centrifugal pump, including a grinding table 1, a housing 2 at the lower end of the grinding table 1, and support legs 3 at the lower end of the housing 2. A rotating assembly for adjusting the horizontal angle of the centrifugal pump housing is installed inside the housing 2. A turntable 4 is installed inside the rotating assembly, and a groove 5 is formed at the upper end of the turntable 4. A clamping assembly for fixing the centrifugal pump housing is installed in the groove 5. A lifting assembly is installed at the upper end of the grinding table 1, and an electric push rod 6 is installed at the lifting end of the lifting assembly. A grinding machine 7 is installed at the telescopic end of the electric push rod 6. The grinding machine 7 moves vertically via the lifting assembly. The grinding table 1 serves as the working platform for the entire device. The design is robust and stable, capable of withstanding the vibrations and forces generated during the grinding process. The rotating component is built into the housing 2, which allows the centrifugal pump housing to rotate freely during grinding, ensuring uniform grinding. The clamping component is installed in the groove 5 of the turntable 4 to accommodate centrifugal pump housings of different sizes and shapes. The electric push rod 6 achieves precise horizontal movement of the grinder 7 by precisely controlling the extension and retraction of the electric push rod 6. The electric push rod 6 is characterized by high speed, high precision, and low noise, making it suitable for fine grinding operations. The grinder 7 is installed at the extension end of the electric push rod 6 and uses a high-speed rotating grinding wheel or grinding disc to efficiently grind the centrifugal pump housing.

[0022] Please see Figure 1 and Figure 3In this embodiment, the rotating assembly includes a first rotating motor 8. The first rotating motor 8 is located at the bottom of the housing 2. The output shaft of the first rotating motor 8 is connected to a transmission shaft 11. A first bearing seat 9 is located at the bottom of the housing 2. A support shaft 10 is rotatably connected inside the first bearing seat 9. The upper end of the support shaft 10 is connected to the lower end of the turntable 4. A transmission structure is provided between the transmission shaft 11 and the support shaft 10. The transmission structure includes a driving bevel gear 12. The driving bevel gear 12 is fixedly connected to the outer wall of the transmission shaft 11, and a driven bevel gear 13 is fixedly connected to the outer wall of the rotating shaft. The driving bevel gear 12 and the driven bevel gear 13 are meshed together. The first rotating motor 8 is installed at the bottom of the housing 2 as a rotating component. The power source of the rotating assembly, the drive shaft 11, is directly connected to the output shaft of the first rotary motor 8, transmitting the rotational power of the first rotary motor 8 to the driving bevel gear 12. The first bearing seat 9 is installed at the bottom of the housing 2, providing stable support for the support shaft 10. The upper end of the support shaft 10 is firmly connected to the lower end of the turntable 4, serving as the support point for the rotation of the turntable 4. When the first rotary motor 8 starts, the drive shaft 11 drives the driving bevel gear 12 to rotate. Due to the meshing relationship between the driving bevel gear 12 and the driven bevel gear 13, the driven bevel gear 13 also rotates, thereby driving the support shaft 10 and the turntable 4 to rotate. This bevel gear transmission structure has the advantages of high transmission efficiency, low noise, and strong load-bearing capacity.

[0023] Please see Figure 1 , Figure 4 and Figure 5In this embodiment, the clamping assembly includes a second bearing seat 21. A second bearing seat 21 is provided on one inner wall of the groove 5. A bidirectional threaded rod 22 is rotatably connected inside the second bearing seat 21. A knob 23 is provided at the end of the bidirectional threaded rod 22. A movable seat 24 is provided on the outer wall of the bidirectional threaded rod 22. An arc-shaped clamping plate 25 is provided at the end of the movable seat 24 facing the centrifugal pump housing. A guide rod 14 is fixedly connected inside the groove 5. The outer wall of the guide rod 14 is slidably connected to the movable seat 24. The lifting assembly includes a support plate 15, and a support plate is provided at the upper end of the grinding table 1. 15 and bearing housing 16 are connected. A screw 17 is rotatably connected inside bearing housing 16. A second rotary motor 26 is installed at the upper end of support plate 15. The output shaft of the second rotary motor 26 is connected to the upper end of screw 17. A lifting seat 18 is threaded onto the outer wall of screw 17. An electric push rod 6 is installed inside lifting seat 18. A slide rail 20 is installed on the vertical part of support plate 15. A slider 19 adapted to slide rail 20 is installed at one end of moving seat 24. The slider 19 is slidably connected to slide rail 20. Bearing housing 21 is installed on one inner wall of groove 5 of turntable 4 and is a bidirectional screw. The threaded rod 22 provides stable support and a center of rotation. It features precision bearing bores to ensure smooth and accurate rotation. The outer wall of the threaded rod 22 has both positive and negative threads to drive the two moving seats 24 to move simultaneously in opposite directions. A knob 23 is mounted at the end of the threaded rod 22 for manual rotation. An arc-shaped clamping plate 25 is mounted on the end of the moving seat 24 facing the centrifugal pump housing to clamp and secure the housing. The arc-shaped clamping plate 25 contains an elastic pad to increase clamping force. To protect the centrifugal pump housing from damage, the guide rod 14 is fixedly connected in the groove 5, providing stable guidance and support for the movable seat 24. The second rotary motor 26 is installed on the upper end of the support plate 15, providing power to the screw 17. The outer wall of the screw 17 is designed with threads to drive the lifting seat 18 to move up and down. The slide rail 20 is fixedly connected to the vertical part of the support plate 15. The slider 19 is installed at one end of the lifting seat 18, adapted to the slide rail 20 and slidably connected. This design enhances the stability of the lifting seat 18 during the lifting process and prevents it from shaking or deviating from the track.

[0024] During operation, the centrifugal pump housing is first placed on the turntable 4. Then, the knob 23 is rotated to drive the bidirectional threaded rod 22 to rotate. This action causes the moving seat 24 to slide along the guide rod 14 until the arc-shaped clamping plate 25 tightly clamps and fixes the centrifugal pump housing. Next, the second rotary motor 26, the grinder 7, and the electric push rod 6 are started. The second rotary motor 26 drives the screw 17 to rotate. Using the interaction force between the threads, the lifting plate moves vertically. At the same time, the electric push rod 6 drives the grinder 7 to move, ensuring that the grinder 7 can accurately grind the centrifugal pump housing.

[0025] To adjust the horizontal angle of the centrifugal pump housing, simply start the No. 1 rotary motor 8. Once started, the No. 1 rotary motor 8 will drive the drive shaft 11 to rotate. The drive shaft 11 will further drive the drive bevel gear 12 to rotate. Since there is a precise meshing relationship between the drive bevel gear 12 and the driven bevel gear 13, the driven bevel gear 13 will also rotate, thereby driving the support shaft 10 and the turntable 4 to rotate together, ultimately achieving the adjustment of the horizontal angle of the centrifugal pump housing.

[0026] Through the above steps, compared with the traditional manual grinding method, this solution allows the centrifugal pump housing to rotate freely during the grinding process through the built-in rotating component, ensuring the uniformity of grinding and avoiding the uneven grinding defects that occur when manually grinding. At the same time, the clamping component can adapt to centrifugal pump housings of different sizes, improving the versatility and practicality of the device. In addition, the cooperation between the electric push rod 6 and the lifting component enables the grinding machine 7 to move precisely in the vertical direction, which is very suitable for fine grinding operations. It can effectively improve the grinding quality and production efficiency of centrifugal pump housings, and solve the problem that the traditional manual grinding method of centrifugal pump housings is difficult to guarantee uniformity and has low efficiency, which cannot meet the needs of large-scale production.

[0027] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A grinding device for a petrochemical centrifugal pump, comprising a grinding table (1), a housing (2) at the lower end of the grinding table (1), and support legs (3) at the lower end of the housing (2); characterized in that: The housing (2) is equipped with a rotating assembly for adjusting the horizontal angle of the centrifugal pump housing. The rotating assembly is equipped with a turntable (4). The upper end of the turntable (4) is provided with a groove (5). The groove (5) is equipped with a clamping assembly for fixing the centrifugal pump housing. The upper end of the grinding table (1) is equipped with a lifting assembly. The lifting end of the lifting assembly is equipped with an electric push rod (6). The telescopic end of the electric push rod (6) is equipped with a grinding machine (7). The grinding machine (7) moves vertically through the lifting assembly.

2. The grinding device for petrochemical centrifugal pumps according to claim 1, characterized in that: The rotating assembly includes a first rotating motor (8), the first rotating motor (8) is installed at the bottom of the housing (2), the output shaft of the first rotating motor (8) is connected to a transmission shaft (11), the bottom of the housing (2) is provided with a first bearing seat (9), a support shaft (10) is rotatably connected inside the first bearing seat (9), the upper end of the support shaft (10) is connected to the lower end of the turntable (4), and a transmission structure is provided between the transmission shaft (11) and the support shaft (10).

3. The grinding device for petrochemical centrifugal pumps according to claim 2, characterized in that: The transmission structure includes a driving bevel gear (12), the outer wall of the transmission shaft (11) is fixedly connected to the driving bevel gear (12), the outer wall of the rotating shaft is fixedly connected to the driven bevel gear (13), and the driving bevel gear (12) and the driven bevel gear (13) are meshed together.

4. The grinding device for petrochemical centrifugal pumps according to claim 3, characterized in that: The clamping assembly includes a second bearing seat (21), a second bearing seat (21) is provided on one side inner wall of the groove (5), a bidirectional threaded rod (22) is rotatably connected inside the second bearing seat (21), a knob (23) is provided at the end of the bidirectional threaded rod (22), a movable seat (24) is provided on the outer wall of the bidirectional threaded rod (22), and an arc-shaped clamping plate (25) is provided at the end of the movable seat (24) facing the centrifugal pump housing.

5. The grinding device for petrochemical centrifugal pumps according to claim 4, characterized in that: A guide rod (14) is fixedly connected inside the groove (5), and the outer wall of the guide rod (14) is slidably connected to the movable seat (24).

6. The grinding device for petrochemical centrifugal pumps according to claim 5, characterized in that: The lifting assembly includes a support plate (15). The upper end of the grinding table (1) is provided with the support plate (15) and the No. 3 bearing seat (16). The No. 3 bearing seat (16) is rotatably connected with a screw (17). The upper end of the support plate (15) is provided with a No. 2 rotary motor (26). The output shaft of the No. 2 rotary motor (26) is connected to the upper end of the screw (17). The outer wall of the screw (17) is threadedly connected with a lifting seat (18). The lifting seat (18) is provided with an electric push rod (6).

7. The grinding device for petrochemical centrifugal pumps according to claim 6, characterized in that: The vertical part of the support plate (15) is provided with a slide rail (20), and one end of the movable seat (24) is provided with a slider (19) adapted to the slide rail (20). The slider (19) is slidably connected to the slide rail (20).

Images