Quick replacement device for sealing element of gear pump

Abstract

The utility model relates to the technical field of gear pump maintenance, in particular to a gear pump sealing element quick replacement device which comprises a treatment table body, a connecting frame is arranged at the top of the treatment table body, a cleaning assembly is arranged in the connecting frame, and a four-hand clamping jaw is arranged at the top of the treatment table body and located below the connecting frame. The cleaning assembly is used for cleaning the gear pump, the cleaning assembly is composed of a fixed plate, a movable rod, a movable shell, a plurality of sets of movable frames and sponge strips, the fixed plate is fixedly connected to the top of the connecting frame, the movable rod is located in the fixed plate, and the movable shell is fixedly connected to the bottom of the movable rod; the multiple sets of moving frames are all located at the bottom of the moving shell, the sponge strips are fixedly connected to the bottoms of the moving frames, and compared with an existing replacing device, the overall practicability of the replacing device can be improved through the design.

Description

Technical Field

[0001] This utility model relates to the field of gear pump repair technology, specifically to a quick replacement device for gear pump seals. Background Technology

[0002] A gear pump is a mechanical device that uses the meshing and rotation of gears to change the internal working volume of the pump body, thereby drawing in and discharging liquid. The working principle of a gear pump is based on the meshing and rotation of gears. Specifically, when the driving gear is driven to rotate by an electric motor or other prime mover, the sealed volume on the side where the gear teeth are disengaged increases, creating a partial vacuum, thus drawing liquid from the tank or suction line. Conversely, on the side where the gear teeth are engaged, the sealed volume decreases, the liquid is compressed, and discharged through the discharge line. This process is repeated continuously, thus achieving continuous liquid delivery and pressurization.

[0003] During the operation of a gear pump, the medium itself carries some tiny solid particles or impurities. Over time, these impurities gradually accumulate at the interface. Secondly, the internal components of the pump will wear down during long-term operation, and the worn components will produce metallic or non-metallic debris. This debris can easily flow to the interface with the heat of the liquid. However, due to the obstruction at the connection between the pump body and the pump shaft, the debris will remain at the connection. When the debris remains at the connection, it can embed in the seal or cause scratches and damage between the sealing surfaces, leading to seal failure and aggravated liquid leakage. This not only affects the normal working efficiency of the pump, but also causes pollution of the working environment and safety hazards. Continuous friction and jamming will accelerate the wear at the connection between the pump shaft and the pump body, shortening the service life of the pump shaft and internal parts of the pump body. Therefore, it is necessary to repair the gear pump by using maintenance equipment when a seal leakage is detected.

[0004] In existing maintenance devices, when replacing seals between the pump shaft and pump body, workers typically remove the old seals and reinstall the new ones. However, due to residual debris at the connection point, this debris can cause scratches, cuts, or other damage during seal installation, directly harming the new seal and preventing it from forming a proper seal. This leads to rapid recurrence of leaks. Furthermore, residual debris can cause uneven sealing surfaces at the pump shaft and pump body connection, resulting in uneven pressure distribution and affecting the sealing effect. It can even lead to loose seals during operation. Additionally, residual liquid inside the gear pump during disassembly can interfere with the correct seal placement, preventing complete fit and leaving leakage channels, thus affecting the maintenance efficiency. Therefore, improving existing replacement devices and designing a new quick-change gear pump seal device to address these technical shortcomings and improve the overall practicality of the replacement system is crucial. Utility Model Content

[0005] The purpose of this invention is to provide a quick replacement device for gear pump seals. This device cleans the installation area of ​​the seals, effectively wiping away residual water stains and liquids at the gear pump connection. It also cleans away scraped debris. The continuous wiping with a sponge strip during seal replacement further ensures the sealing performance between the seal and the gear pump. Compared to existing technologies where direct seal replacement results in residual water stains and debris affecting the seal's fit with the gear pump, this overall design allows for quick and convenient replacement of gear pump seals, reducing maintenance time and costs, and improving equipment utilization, thus solving the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A quick-change device for gear pump seals includes a processing table body, a connecting frame on the top of the processing table body, a cleaning assembly inside the connecting frame, and four grippers on the top of the processing table body and below the connecting frame.

[0008] The cleaning assembly is used to clean the gear pump. The cleaning assembly consists of a fixed plate, a moving rod, a moving shell, multiple sets of moving frames, and a sponge strip. The fixed plate is fixedly connected to the top of the connecting frame. The moving rod is located inside the fixed plate. The moving shell is fixedly connected to the bottom of the moving rod. Multiple sets of the moving frames are located at the bottom of the moving shell. The sponge strip is fixedly connected to the bottom of the moving frame.

[0009] As a preferred embodiment of this utility model, the interior of the movable shell is provided with a connecting seat, the interior of the connecting seat is rotatably connected to a rotating disk, the outer side of the rotating disk is rotatably connected to multiple sets of arc-shaped rods, and the end of the arc-shaped rod away from the rotating disk is rotatably connected to a moving block.

[0010] In a preferred embodiment of this utility model, the movable block and the connecting seat are slidably connected, and the movable frame and the movable block are fixedly connected.

[0011] As a preferred embodiment of this utility model, the movable shell and the fixed plate are slidably connected, the top of the fixed plate is rotatably connected to a first drive gear, the movable rod is slidably connected to the first drive gear, the outer side of the first drive gear is meshed with a first synchronous belt, the end of the first synchronous belt away from the first drive gear is meshed with a second drive gear, and the drive end of the first drive motor is fixedly connected inside the second drive gear.

[0012] As a preferred embodiment of this utility model, a movable plate is rotatably connected to the top of the movable rod, and a drive end of a telescopic cylinder is fixedly connected to the end of the movable plate away from the movable rod. The telescopic cylinder is fixedly installed inside the fixed plate.

[0013] As a preferred embodiment of this utility model, the rotating disk extends to the top of the connecting seat and is fixedly connected to a third drive gear. The outer side of the third drive gear is meshed with a second synchronous belt. The end of the second synchronous belt away from the third drive gear is meshed with a fourth drive gear. The drive end of a second drive motor is fixedly connected inside the fourth drive gear.

[0014] As a preferred embodiment of this utility model, the four-hand gripper is provided with multiple sets of fitting blocks inside. The fitting blocks extend into the interior of the four-hand gripper and are fixedly connected to rotating blocks. Two sets of guide rods are rotatably connected to both ends of the rotating blocks. The ends of the two sets of guide rods away from the rotating blocks are connected by sliding blocks. The two sets of sliding blocks are connected by two sets of sliding rods. Compression springs are sleeved on both ends of the sliding rods and on the outside of the two sets of sliding blocks.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] In this invention, the cleaning component is designed to clean the installation area of ​​the seal, effectively wiping away residual water stains and liquids at the gear pump connection. It also allows for further cleaning of scraped debris. This wiping and cleaning of debris and water stains further ensures the sealing performance between the seal and the gear pump when replacing the seal at the gear pump connection, thanks to the continuous wiping with a sponge strip. Compared to existing technologies where direct seal replacement results in residual water stains and debris affecting the seal's fit with the gear pump, this method of cleaning and wiping away water stains, liquids, and adhered debris at the gear pump connection further guarantees a tight seal at the connection. The design enhances sealing performance and improves the fit between the seal and the gear pump, effectively preventing leakage after maintenance. Simultaneously, the movable sponge strip allows for quick cleaning of gear pumps of different sizes without frequent tool changes or complex adjustments, thus shortening cleaning time and improving the efficiency of the entire maintenance process. Regardless of pump diameter variations, the sponge strip can be adjusted to ensure thorough contact with the connection points, reducing problems caused by incomplete cleaning. The overall design allows for quick and convenient replacement of gear pump seals, reducing maintenance time and costs and increasing equipment utilization. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the cleaning component structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the connector structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the rotating disk structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the four-handed gripper structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the bonding block structure of this utility model;

[0023] Figure 7 This is a schematic diagram of the rotating block structure of this utility model.

[0024] In the diagram: 1. Processing table body; 2. Connecting frame; 3. Cleaning assembly; 4. Four-hand gripper; 5. Fixing plate; 6. Moving rod; 7. Moving shell; 8. Moving frame; 9. Sponge strip; 10. Connecting seat; 11. Rotating disk; 12. Arc rod; 13. Moving block; 14. First drive gear; 15. First synchronous belt; 16. Second drive gear; 17. Moving plate; 18. Third drive gear; 19. Second synchronous belt; 20. Fourth drive gear; 21. Adhesive block; 22. Rotating block; 23. Guide rod; 24. Sliding block; 25. Sliding rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] Example:

[0027] Please see Figures 1-7 This utility model provides a technical solution:

[0028] A quick-change device for gear pump seals includes a processing table body 1, a connecting frame 2 on the top of the processing table body 1, a cleaning component 3 inside the connecting frame 2, and a four-hand gripper 4 on the top of the processing table body 1 and below the connecting frame 2.

[0029] The cleaning assembly 3 is used to clean the gear pump. The cleaning assembly 3 consists of a fixed plate 5, a moving rod 6, a moving shell 7, multiple sets of moving frames 8, and a sponge strip 9. The fixed plate 5 is fixedly connected to the top of the connecting frame 2. The moving rod 6 is located inside the fixed plate 5. The moving shell 7 is fixedly connected to the bottom of the moving rod 6. The multiple sets of moving frames 8 are all located at the bottom of the moving shell 7. The sponge strip 9 is fixedly connected to the bottom of the moving frame 8.

[0030] Furthermore, the interior of the movable housing 7 is provided with a connecting seat 10, and a rotating disk 11 is rotatably connected inside the connecting seat 10. Multiple sets of arc-shaped rods 12 are rotatably connected to the outer side of the rotating disk 11. A moving block 13 is rotatably connected to the end of the arc-shaped rod 12 away from the rotating disk 11. The moving block 13 is slidably connected to the connecting seat 10, and the moving frame 8 is fixedly connected to the moving block 13. When the rotating disk 11 rotates, it drives the arc-shaped rods 12 to move, which in turn drives the moving block 13 to move, which in turn drives the moving frame 8 to move, thus enabling the sponge strip 9 to move. The position of the multiple sets of sponge strips 9 is adjusted according to the specifications of the gear pump so that the sponge strip 9 can contact the sealing installation point.

[0031] Secondly, the movable shell 7 and the fixed plate 5 are slidably connected. The top of the fixed plate 5 is rotatably connected to the first drive gear 14. The movable rod 6 is slidably connected to the first drive gear 14. The outer side of the first drive gear 14 is meshed with the first synchronous belt 15. The end of the first synchronous belt 15 away from the first drive gear 14 is meshed with the second drive gear 16. The drive end of the first drive motor is fixedly connected inside the second drive gear 16. When the first drive motor is started, the second drive gear 16 is driven to rotate, which causes the first synchronous belt 15 to rotate, which in turn causes the first drive gear 14 to rotate, allowing the movable rod 6 to rotate, which in turn causes the connecting shell to rotate, causing multiple sets of movable frames 8 and sponge strips 9 to move in an arc shape with the rotating rod as the center.

[0032] Furthermore, a movable plate 17 is rotatably connected to the top of the movable rod 6. The end of the movable plate 17 away from the movable rod 6 is fixedly connected to the drive end of the telescopic cylinder. The telescopic cylinder is fixedly installed inside the fixed plate 5. When the telescopic cylinder is activated, the movable plate 17 is moved, which allows the movable rod 6 to move, which in turn moves the connecting shell, thereby allowing the movable frame 8 to move and fit the sponge strip 9 to the sealing installation location.

[0033] Furthermore, the rotating disk 11 extends to the top of the connecting seat 10 and is fixedly connected to a third drive gear 18. The outer side of the third drive gear 18 is meshed with a second synchronous belt 19. The end of the second synchronous belt 19 away from the third drive gear 18 is meshed with a fourth drive gear 20. The drive end of the second drive motor is fixedly connected inside the fourth drive gear 20. When the second drive motor is started, it drives the fourth drive gear 20 to rotate, causing the second synchronous belt 19 to rotate, which in turn drives the third drive gear 18 to rotate, causing the rotating disk 11 to rotate.

[0034] Furthermore, the four-hand gripper 4 has multiple sets of contact blocks 21 inside. The contact blocks 21 extend into the interior of the four-hand gripper 4 and are fixedly connected to rotating blocks 22. Both ends of the rotating blocks 22 are rotatably connected to two sets of guide rods 23. The ends of the two sets of guide rods 23 away from the rotating blocks 22 are connected by sliding blocks 24. The two sets of sliding blocks 24 are connected by two sets of sliding rods 25. Both ends of the sliding rods 25 and located outside the two sets of sliding blocks 24 are fitted with compression springs. When the four-hand gripper 4 clamps and fixes the gear pump, the contact blocks 21 come into contact with the gear pump. When the contact blocks 21 come into contact with the gear pump, they are displaced by a relative force, which drives the rotating blocks 22 to move, causing the multiple sets of guide rods 23 to move, which in turn drives the sliding blocks 24 to move, compressing the compression springs. The compression springs can buffer the contact blocks 21, increase the buffer distance between the four-hand gripper 4 and the gear pump, and prevent damage to the surface of the gear pump.

[0035] In this embodiment, the specific implementation scenario is as follows: In actual use, the gear pump is placed inside the four-hand gripper 4, and the gear pump is clamped and fixed by the four-hand gripper 4. When the four-hand gripper 4 clamps and fixes the gear pump, the contact block 21 comes into contact with the gear pump. When the contact block 21 comes into contact with the gear pump, it is displaced by a relative force, which drives the rotating block 22 to move, causing the multiple sets of guide rods 23 to move, which in turn drives the sliding block 24 to move, compressing the spring. The compression spring can buffer the contact block 21, increasing the buffer distance between the four-hand gripper 4 and the gear pump, preventing damage to the surface of the gear pump. The gear pump is then disassembled, the old seal is removed, and the second drive motor is started, driving the fourth drive gear 20 to proceed. The rotation of the first drive motor causes the second synchronous belt 19 to rotate, which in turn drives the third drive gear 18 to rotate, causing the rotating disk 11 to rotate. As the rotating disk 11 rotates, it causes the arc-shaped rod 12 to shift, which in turn causes the moving block 13 to shift, which in turn causes the moving frame 8 to shift, thus allowing the sponge strip 9 to shift. The positions of multiple sets of sponge strips 9 are adjusted according to the specifications of the gear pump. The telescopic cylinder is then activated, causing the moving plate 17 to shift, which in turn causes the moving rod 6 to shift, which in turn causes the connecting shell to shift, thus allowing the moving frame 8 to shift and fit the sponge strip 9 against the sealing installation point. The first drive motor is then activated, causing the second drive gear 16 to rotate, which in turn causes the first synchronous belt 15 to rotate, which in turn drives the first drive gear 14 to rotate. The movement allows the movable rod 6 to rotate, causing the connecting shell to rotate as well. This, in turn, causes multiple movable frames 8 and sponge strips 9 to move in an arc shape around the rotating rod, cleaning the installation area of ​​the seal and wiping away residual water stains and liquids at the gear pump connection. It also effectively cleans away scraped debris. The continuous wiping by the sponge strips 9 further ensures the sealing performance between the seal and the gear pump when replacing the seal at the gear pump connection. Compared to existing technologies where direct seal replacement results in residual water stains and debris affecting the seal's fit with the gear pump, this method of cleaning and wiping away water stains, liquids, and adhered debris at the gear pump connection further ensures a better seal. This process ensures the sealing of the gear pump connection and further improves the fit between the seal and the gear pump, effectively preventing leakage after maintenance of the gear pump's seal. The sponge strip 9 removes debris adhering to the gear pump connection, preventing further wear on the pump shaft, seals, and surrounding components during operation, extending their service life, and reducing maintenance costs and frequency. Scraping away residual debris at the connection reduces imbalance and friction caused by debris, lowering vibration and noise during gear pump operation, allowing for smooth and efficient operation, improving system stability and reliability. Simultaneously, debris removal reduces the risk of mechanical failure, overheating, and seal failure caused by debris.To avoid more serious damage and ensure the long-term safe operation of gear pumps, this invention eliminates the need for specific cleaning tools for each diameter gear pump, saving costs and storage space. Secondly, the movement of the sponge strip 9 allows for quick cleaning of gear pumps of different specifications without frequent tool changes or complex adjustments, thus shortening cleaning time and improving the efficiency of the entire maintenance process. Regardless of the pump diameter, the appropriate position of the sponge strip 9 ensures full contact with the connection points, achieving a thorough cleaning effect and reducing problems caused by incomplete cleaning. When emergency cleaning and maintenance of different models of gear pumps are required, the position of the sponge strip 9 can be quickly adjusted and put into use, reducing equipment downtime. Compared with existing replacement devices, this invention improves the overall practicality of the replacement device through its design.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-change device for gear pump seals, comprising a processing table body (1), characterized in that: The processing table body (1) is provided with a connecting frame (2) at the top, and a cleaning component (3) is provided inside the connecting frame (2). A four-hand gripper (4) is provided at the top of the processing table body (1) and below the connecting frame (2). The cleaning assembly (3) is used to clean the gear pump. The cleaning assembly (3) consists of a fixed plate (5), a moving rod (6), a moving shell (7), multiple sets of moving frames (8), and a sponge strip (9). The fixed plate (5) is fixedly connected to the top of the connecting frame (2). The moving rod (6) is located inside the fixed plate (5). The moving shell (7) is fixedly connected to the bottom of the moving rod (6). Multiple sets of the moving frames (8) are located at the bottom of the moving shell (7). The sponge strip (9) is fixedly connected to the bottom of the moving frame (8).

2. The quick-change device for gear pump seals according to claim 1, characterized in that: The movable shell (7) is provided with a connecting seat (10) inside. A rotating disk (11) is rotatably connected inside the connecting seat (10). Multiple sets of arc rods (12) are rotatably connected to the outer side of the rotating disk (11). A moving block (13) is rotatably connected to the end of the arc rod (12) away from the rotating disk (11).

3. The quick-change device for gear pump seals according to claim 2, characterized in that: The movable block (13) and the connecting seat (10) are slidably connected, and the movable frame (8) and the movable block (13) are fixedly connected.

4. The gear pump seal quick replacement device according to claim 1, characterized in that: The movable shell (7) is slidably connected to the fixed plate (5). The top of the fixed plate (5) is rotatably connected to the first drive gear (14). The movable rod (6) is slidably connected to the first drive gear (14). The outer side of the first drive gear (14) is meshed with the first synchronous belt (15). The end of the first synchronous belt (15) away from the first drive gear (14) is meshed with the second drive gear (16). The drive end of the first drive motor is fixedly connected inside the second drive gear (16).

5. The quick-change device for gear pump seals according to claim 1, characterized in that: The top of the moving rod (6) is rotatably connected to a moving plate (17), and the end of the moving plate (17) away from the moving rod (6) is fixedly connected to the drive end of a telescopic cylinder, which is fixedly installed inside the fixed plate (5).

6. The quick-change device for gear pump seals according to claim 2, characterized in that: The rotating disk (11) extends to the top of the connecting seat (10) and is fixedly connected to a third drive gear (18). The outer side of the third drive gear (18) is meshed with a second synchronous belt (19). The end of the second synchronous belt (19) away from the third drive gear (18) is meshed with a fourth drive gear (20). The drive end of the second drive motor is fixedly connected inside the fourth drive gear (20).

7. The quick-change device for gear pump seals according to claim 1, characterized in that: The four-hand gripper (4) has multiple sets of fitting blocks (21) inside. The fitting blocks (21) extend into the interior of the four-hand gripper (4) and are fixedly connected to a rotating block (22). Both ends of the rotating block (22) are rotatably connected to two sets of guide rods (23). The ends of the two sets of guide rods (23) away from the rotating block (22) are connected by a sliding block (24). The two sets of sliding blocks (24) are connected by two sets of sliding rods (25). Both ends of the sliding rods (25) and located outside the two sets of sliding blocks (24) are fitted with compression springs.

Images