A centrifugal pump with a seal that is easy to maintain

Abstract

The utility model provides a centrifugal pump convenient to maintain and overhaul sealing element relates to centrifugal pump technical field, including the pump body, sealing storehouse and suspension that connect gradually, the inside rotation of sealing storehouse is equipped with the pivot, the right end in the pump body is equipped with the connecting piece, the left end of pivot passes through the connecting piece to the pump body, be equipped with the first sealing element between the right end of connecting piece and pivot, the right end of pivot passes through the suspension, the utility model discloses set up the sealing storehouse between the pump body and suspension, the first sealing element between connecting piece and pivot, the second sealing element between pivot and suspension, all extend to the inside of sealing storehouse, can know whether there is leakage through the discoloration of chromogenic paper in sealing storehouse through visual window observation, only need to press the elastic buckle to remove the locking when maintaining, can take out from the frame piece in the sliding of maintenance door, through the maintenance opening, the first sealing element, the second sealing element are maintained and overhauled conveniently, and the observation is convenient, and the operation is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal pump technology, and in particular to a centrifugal pump with easily maintainable and repairable seals. Background Technology

[0002] Centrifugal pumps are power devices widely used in fluid transport. They generate centrifugal force through the high-speed rotation of an impeller to achieve the intake and discharge of liquid media, playing a crucial role in many scenarios such as industrial production, municipal water supply, and agricultural irrigation. This equipment typically consists of core components such as an impeller, shaft, housing, and seals. The seals, as key components ensuring the equipment's airtightness, are mainly located at the penetration point between the shaft and the housing. They prevent fluid media inside the housing from leaking along the shaft gap and also prevent external impurities from entering the housing and affecting the equipment's operation.

[0003] In existing technologies, the maintenance and repair process of centrifugal pump seals has significant limitations. Because the seals are directly assembled at the penetration point between the shaft and the casing, and form a tight fit with the internal structure of the casing, when the seals are worn, aged, or damaged and require replacement or repair, operators must first disassemble the entire centrifugal pump casing to access the seals and perform subsequent work. This maintenance method not only consumes a significant amount of time and manpower but may also lead to problems such as loss of internal fluid media and secondary damage to components due to casing disassembly, seriously affecting the maintenance efficiency and operational stability of the equipment. Therefore, this utility model proposes a centrifugal pump with easily maintainable and repairable seals to solve the problems existing in the prior art. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a centrifugal pump with easily maintainable and repairable seals. This centrifugal pump features a separate sealing chamber between the pump body and the suspension. The first seal between the connector and the shaft, and the second seal between the shaft and the suspension, both extend into the sealing chamber. Leakage can be detected by observing the color change of the color-developing paper inside the sealing chamber through a viewing window. During maintenance, simply press the snap-lock to release the lock, and the maintenance door can be slid out from the frame. Maintenance and repair of the first and second seals are convenient through the maintenance port, making observation and operation easier.

[0005] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a centrifugal pump that facilitates maintenance and repair of the sealing components, comprising a pump body, a sealing chamber, and a suspension connected in sequence, wherein a rotating shaft is rotatably provided inside the sealing chamber, a connecting member is provided at the right end of the pump body, the left end of the rotating shaft passes through the connecting member into the pump body, a first sealing component is provided between the right end of the connecting member and the rotating shaft, the right end of the rotating shaft passes through the suspension, and a second sealing component is provided between the rotating shaft and the left end of the suspension;

[0006] The inner wall of the sealed chamber is covered with color-developing paper, which changes color when exposed to water. A maintenance port is provided on one side of the sealed chamber, and a frame is provided on the sealed chamber at the position outside the maintenance port. A maintenance door is movably installed inside the frame, and the maintenance door is provided with a viewing window. The maintenance door is fixed by a snap fastener, and a magnifying component is provided on the frame.

[0007] A further improvement is that the frame component includes a U-shaped frame and a guide rail. The U-shaped frame is located on the sealing chamber outside the maintenance opening, and the guide rail is located at the upper and lower ends inside the U-shaped frame. The maintenance door is movably installed with the guide rail.

[0008] A further improvement is that: an inner groove is provided on the sealing chamber at one end of the maintenance port, and a spring is provided at the bottom of the inner groove. A spring block is provided on the spring, and a spring buckle is provided on the spring block, with the front end of the spring buckle extending out of the inner groove.

[0009] A further improvement is that the magnifying component includes a screw sleeve, a stretching tube, and a magnifying lens. The screw sleeve is connected to the U-shaped frame, one end of the stretching tube is threadedly installed with the screw sleeve, and the magnifying lens is connected to the other end of the stretching tube.

[0010] A further improvement is that the first sealing element includes a mechanical seal and a first cover, the mechanical seal is located between the rotating shaft and the connecting member, the first cover is installed on the right end of the connecting member by bolts, and the first cover is located inside the sealing chamber.

[0011] A further improvement is that the second seal includes a sealing bearing and a second cover, the sealing bearing being located between the shaft and the suspension, the second cover being bolted to the left end of the suspension, and the second cover being located inside the sealing chamber.

[0012] A further improvement is that: the pump body is equipped with an impeller inside, the left end of the rotating shaft is connected to the impeller, the left end of the pump body is equipped with a water inlet, and the top of the pump body is equipped with a water outlet.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This utility model sets up a separate sealing chamber between the pump body and the suspension. The first seal between the connector and the shaft, and the second seal between the shaft and the suspension, both extend into the interior of the sealing chamber. The presence of leakage can be determined by observing the color change of the color-developing paper inside the sealing chamber through the viewing window. During maintenance, simply press the snap button to release the lock, and the maintenance door can be slid out from the frame. The first and second seals can be easily maintained and inspected through the maintenance port. Observation is convenient and operation is more convenient.

[0015] 2. When observing a leak, this utility model allows the stretching tube to be moved to the viewing window, facilitating magnified observation of the inside of the sealed chamber, thus making the observation of the color developing paper more accurate and versatile. Attached Figure Description

[0016] Figure 1 This is the front view of the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the spring-loaded buckle structure of this utility model.

[0019] The components are as follows: 1. Pump body; 2. Sealing chamber; 3. Suspension; 4. Rotary shaft; 5. Connecting parts; 6. Maintenance port; 7. Developing paper; 8. Maintenance door; 9. Viewing window; 10. U-shaped frame; 11. Guide rail; 12. Spring clip; 13. Inner groove; 14. Spring; 15. Spring block; 16. Screw sleeve; 17. Tension tube; 18. Magnifying glass; 19. Mechanical seal; 20. First cover; 21. Sealed bearing; 22. Second cover; 23. Impeller; 24. Inlet; 25. Outlet. Detailed Implementation

[0020] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0021] Example 1

[0022] according to Figure 1 , 2 As shown in Figure 3, this embodiment proposes a centrifugal pump with easy maintenance and repair of the seals, including a pump body 1, a sealing chamber 2 and a suspension 3 connected in sequence. The sealing chamber 2 is rotatably provided with a rotating shaft 4. The right end of the pump body 1 is provided with a connector 5. The left end of the rotating shaft 4 passes through the connector 5 into the pump body 1. A first seal is provided between the right end of the connector 5 and the rotating shaft 4. The right end of the rotating shaft 4 passes through the suspension 3, and a second seal is provided between the left end of the rotating shaft 4 and the suspension 3.

[0023] The inner wall of the sealed chamber 2 is covered with color-developing paper 7, which changes color upon contact with water. A maintenance port 6 is provided on one side of the sealed chamber 2, and a frame is provided on the sealed chamber 2 outside the maintenance port 6. A maintenance door 8 is movably installed inside the frame, and the maintenance door 8 has a viewing window 9. The maintenance door 8 is fixed by a spring-loaded latch 12. A magnifying component is provided on the frame. In use, a separate sealed chamber 2 is provided between the pump body 1 and the suspension 3. The first seal between the connecting piece 5 and the rotating shaft 4, and the second seal between the rotating shaft 4 and the suspension 3, both extend into the interior of the sealed chamber 2. The color change of the color-developing paper 7 inside the sealed chamber 2 can be observed through the viewing window 9 to determine if there is a leak. During maintenance, simply press the spring-loaded latch 12 to unlock it, and the maintenance door 8 can be slid out from the frame. Maintenance and inspection of the first and second seals are convenient through the maintenance port 6, making observation and operation easier. The surface of the color-developing paper 7 is coated with a water-sensitive chemical (such as cobalt chloride), which changes color upon contact with water. For example, hydrated cobalt chloride appears pink to red in water and blue when anhydrous.

[0024] The frame includes a U-shaped frame 10 and a guide rail 11. The U-shaped frame 10 is located on the sealing chamber 2 outside the maintenance opening 6. The guide rail 11 is located at the upper and lower ends inside the U-shaped frame 10. The maintenance door 8 is movably installed on the guide rail 11. An inner groove 13 is provided on the sealing chamber 2 at one end of the maintenance opening 6, and a spring 14 is located at the bottom of the inner groove 13. A spring block 15 is provided on the spring block 15, and a spring buckle 12 is located on the spring block 15, with the front end of the spring buckle 12 extending out of the inner groove 13. In use, the maintenance door 8 is slid into the guide rail 11 to close the upper maintenance opening 6. The spring 14 pops out the spring buckle 12, limiting it at one end of the maintenance door 8. To open it, press down the spring buckle 12 and pull out the maintenance door 8.

[0025] The magnifying assembly includes a threaded sleeve 16, a stretching tube 17, and a magnifying glass 18. The threaded sleeve 16 is connected to the U-shaped frame 10, one end of the stretching tube 17 is threaded onto the threaded sleeve 16, and the magnifying glass 18 is connected to the other end of the stretching tube 17. When observing a leak, the stretching tube 17 can be moved to move the magnifying glass 18 to the viewing window 9, facilitating magnified observation of the inside of the sealed chamber 2. This allows for more accurate observation of the developing paper 7, providing versatility in functionality.

[0026] The first sealing element includes a mechanical seal 19 and a first cover 20. The mechanical seal 19 is located between the rotating shaft 4 and the connecting member 5. The first cover 20 is bolted to the right end of the connecting member 5 and is located inside the sealing chamber 2. The second sealing element includes a sealing bearing 21 and a second cover 22. The sealing bearing 21 is located between the rotating shaft 4 and the suspension 3. The second cover 22 is bolted to the left end of the suspension 3 and is located inside the sealing chamber 2. The first seal between the connecting member 5 and the rotating shaft 4, and the second seal between the rotating shaft 4 and the suspension 3, both extend into the sealing chamber 2. Leakage can be detected by observing the color change of the color developing paper 7 inside the sealing chamber 2 through the viewing window 9. During maintenance, simply press the snap 12 to unlock it, and the maintenance door 8 can be slid out from the frame. The maintenance port 6 facilitates maintenance and inspection of the first and second seals, making observation and operation convenient.

[0027] Example 2

[0028] according to Figure 1 , 2 As shown in Figure 3, this embodiment proposes a centrifugal pump with easy maintenance and repair of the seals, including a pump body 1, a sealing chamber 2 and a suspension 3 connected in sequence. The sealing chamber 2 is rotatably provided with a rotating shaft 4. The right end of the pump body 1 is provided with a connector 5. The left end of the rotating shaft 4 passes through the connector 5 into the pump body 1. A first seal is provided between the right end of the connector 5 and the rotating shaft 4. The right end of the rotating shaft 4 passes through the suspension 3, and a second seal is provided between the left end of the rotating shaft 4 and the suspension 3.

[0029] The inner wall of the sealed chamber 2 is covered with color-developing paper 7, which changes color upon contact with water. A maintenance port 6 is provided on one side of the sealed chamber 2, and a frame is provided on the sealed chamber 2 outside the maintenance port 6. A maintenance door 8 is movably installed inside the frame, and the maintenance door 8 has a viewing window 9. The maintenance door 8 is fixed by a spring-loaded latch 12. A magnifying component is provided on the frame. In use, a separate sealed chamber 2 is provided between the pump body 1 and the suspension 3. The first seal between the connecting piece 5 and the rotating shaft 4, and the second seal between the rotating shaft 4 and the suspension 3, both extend into the interior of the sealed chamber 2. The color change of the color-developing paper 7 inside the sealed chamber 2 can be observed through the viewing window 9 to determine if there is a leak. During maintenance, simply press the spring-loaded latch 12 to unlock it, and the maintenance door 8 can be slid out from the frame. Maintenance and inspection of the first and second seals are convenient through the maintenance port 6, making observation and operation easier. The surface of the color-developing paper 7 is coated with a water-sensitive chemical (such as cobalt chloride), which changes color upon contact with water. For example, hydrated cobalt chloride appears pink to red in water and blue when anhydrous.

[0030] The magnifying assembly includes a threaded sleeve 16, a stretching tube 17, and a magnifying glass 18. The threaded sleeve 16 is connected to the U-shaped frame 10, one end of the stretching tube 17 is threaded onto the threaded sleeve 16, and the magnifying glass 18 is connected to the other end of the stretching tube 17. When observing a leak, the stretching tube 17 can be moved to move the magnifying glass 18 to the viewing window 9, facilitating magnified observation of the inside of the sealed chamber 2. This allows for more accurate observation of the developing paper 7, providing versatility in functionality.

[0031] The pump body 1 is equipped with an impeller 23 inside. The left end of the rotating shaft 4 is connected to the impeller 23. The left end of the pump body 1 is provided with a water inlet 24, and the top of the pump body 1 is provided with a water outlet 25. In use, the right end of the rotating shaft 4 is connected to a motor. The motor drives the rotating shaft 4 to rotate, which causes the impeller 23 to rotate, generating pump power. Water enters through the water inlet 24 and drains through the water outlet 25.

[0032] This centrifugal pump, designed for easy maintenance and repair of its seals, features a separate sealing chamber 2 between the pump body 1 and the suspension 3. The first seal between the connector 5 and the rotating shaft 4, and the second seal between the rotating shaft 4 and the suspension 3, both extend into the sealing chamber 2. Leakage can be detected by observing the color change of the developing paper 7 inside the sealing chamber 2 through the viewing window 9. During maintenance, simply press the snap 12 to unlock it, allowing the maintenance door 8 to slide out from the frame. Maintenance and repair of the first and second seals are convenient through the maintenance port 6, making observation and operation easier. Furthermore, when observing for leaks, the tension tube 17 can be moved to the viewing window 9, facilitating magnified observation of the interior of the sealing chamber 2 and providing more accurate observation of the developing paper 7. This design offers versatility in functionality.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A centrifugal pump with easily maintained and repairable seals, comprising a pump body (1), a sealing chamber (2), and a suspension (3) connected in sequence, characterized in that: The sealed chamber (2) is provided with a rotating shaft (4) inside. The right end of the pump body (1) is provided with a connector (5). The left end of the rotating shaft (4) passes through the connector (5) into the pump body (1). A first seal is provided between the right end of the connector (5) and the rotating shaft (4). The right end of the rotating shaft (4) passes through the suspension (3). A second seal is provided between the rotating shaft (4) and the left end of the suspension (3). The inner wall of the sealed chamber (2) is covered with color developing paper (7), and the color developing paper (7) changes color when it comes into contact with water. A maintenance port (6) is provided on one side of the sealed chamber (2), and a frame is provided on the sealed chamber (2) at the position outside the maintenance port (6). A maintenance door (8) is movably installed inside the frame, and a viewing window (9) is provided on the maintenance door (8). The maintenance door (8) is fixed by a snap fastener (12), and a magnifying component is provided on the frame.

2. A centrifugal pump with easily maintainable and repairable seals according to claim 1, characterized in that: The frame includes a U-shaped frame (10) and a guide rail (11). The U-shaped frame (10) is located on the sealing chamber (2) outside the maintenance opening (6). The guide rail (11) is located at the upper and lower ends inside the U-shaped frame (10). The maintenance door (8) is movably installed with the guide rail (11).

3. A centrifugal pump with easily maintainable and repairable seals according to claim 1, characterized in that: The sealing chamber (2) at one end of the maintenance port (6) is provided with an inner groove (13), and a spring (14) is provided at the bottom of the inner groove (13). A spring block (15) is provided on the spring (14), and a spring buckle (12) is provided on the spring block (15), with the front end of the spring buckle (12) extending out of the inner groove (13).

4. A centrifugal pump with easily maintainable and repairable seals according to claim 1, characterized in that: The magnifying assembly includes a screw sleeve (16), a stretch tube (17), and a magnifying lens (18). The screw sleeve (16) is connected to the U-shaped frame (10). One end of the stretch tube (17) is threadedly installed with the screw sleeve (16), and the magnifying lens (18) is connected to the other end of the stretch tube (17).

5. A centrifugal pump with easily maintainable and repairable seals according to claim 1, characterized in that: The first sealing element includes a mechanical seal (19) and a first cover (20). The mechanical seal (19) is located between the rotating shaft (4) and the connecting member (5). The first cover (20) is installed on the right end of the connecting member (5) by bolts and is located inside the sealing chamber (2).

6. A centrifugal pump with easily maintainable and repairable seals according to claim 5, characterized in that: The second seal includes a sealing bearing (21) and a second cover (22). The sealing bearing (21) is located between the shaft (4) and the suspension (3). The second cover (22) is bolted to the left end of the suspension (3) and is located inside the sealing chamber (2).

7. A centrifugal pump with easily maintained and repairable seals according to claim 1, characterized in that: The pump body (1) is equipped with an impeller (23) inside, the left end of the rotating shaft (4) is connected to the impeller (23), the left end of the pump body (1) is equipped with a water inlet (24), and the top of the pump body (1) is equipped with a water outlet (25).

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