Sealing connecting piece of circulating water pump

Abstract

The utility model discloses a sealing connecting piece of a circulating water pump, and relates to the technical field of mechanical sealing. The output end of the circulating pump is connected with a rotary connecting rod, the right side end of the circulating pump is provided with a circulating shell, the left side end of the circulating shell is connected with an auxiliary cylinder, a moving seal and a pressing plate are arranged in the circulating shell, a moving seal gasket is arranged between the moving seal frame and the pressing plate, and an adjusting mechanism is arranged on the left side of the pressing plate. An adjusting cylinder is matched with an external thread propelling pipe to drive the external thread propelling pipe and a propelling plate to move towards the right side to extrude and abut against a spring, so that it is guaranteed that the abutting spring can provide enough acting force for a pressing plate, and then it is guaranteed that enough acting force can exist between the pressing plate and a moving sealing frame; the sealing effect of the movable sealing gasket is guaranteed through cooperation of the pressing plate and the movable sealing frame, relative rotation between the movable sealing frame and the abutting plate is achieved through the rotating balls in the rotating process of the device, and therefore abrasion between the movable sealing frame and the abutting plate is reduced, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical seals, in particular to a circulating water pump sealing connector. Background Art

[0002] Water pump sealing connectors generally refer to water pump mechanical seals, which are shaft sealing devices for rotating machinery, such as water pumps, centrifuges, compressors, reactors, and general rotating machinery. Since the transmission shaft runs through the inside and outside of the equipment, there is a circumferential gap between the shaft and the equipment. The medium in the equipment leaks out through the gap. If the medium in the equipment is flammable and explosive, it may cause a fire or even an explosion. If the medium in the equipment is toxic and harmful, it will cause environmental pollution, so there must be a shaft sealing device to prevent leakage, that is, a mechanical seal.

[0003] In existing mechanical seals, springs are generally used to provide pre-tightening force for the device to ensure that the dynamic and static rings fit well. However, with the long-term use of the equipment, the spring will undergo plastic deformation, the free length will shorten, and the elastic force will be weakened, and thus it is impossible to ensure that the dynamic and static rings fit well. When the existing device is in use, the adjacent end of the static ring and the dynamic ring will wear out after long-term use. Therefore, the present application proposes a circulating water pump sealing connector to solve the above problem. Utility Model Content

[0004] The utility model aims to provide a circulating water pump sealing connector, which solves the technical problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a circulating water pump sealing connector, comprising a circulating pump, wherein the output end of the circulating pump is fixedly connected with a rotating connecting rod, the right end of the circulating pump is fixedly connected with a fixed connecting plate, the right end of the circulating pump is provided with a circulating shell, the right end of the circulating shell is provided with a sealing cover, the right end of the sealing cover is fixedly connected with a water inlet pipe, the side wall of the circulating shell is fixedly connected with a water outlet pipe, the water outlet pipe is connected with the water inlet pipe through the circulating shell, the right end of the fixed connecting plate is fixedly connected with the left outer wall of the circulating shell, the inner side of the circulating shell is provided with an impeller, the left end of the circulating shell is fixedly connected with an auxiliary cylinder, and the left inner wall of the circulating shell A partition frame is fixedly connected, and the right end of the rotating connecting rod sequentially penetrates the left side wall of the auxiliary cylinder, the circulation shell and the right side wall of the partition frame, and is fixedly connected to the left end of the impeller. An abutment plate is provided on the inner side of the partition frame, and the right end of the abutment plate is fixedly connected to the right inner wall of the partition frame. A moving sealing frame is provided on the left side of the abutment plate, and a rotating ball is provided between the moving sealing frame and the abutment plate. A pressure plate is provided on the left side of the moving sealing frame. The moving sealing frame and the pressure plate are both annular and are sleeved on the rotating connecting rod. The moving sealing frame and the pressure plate are both slidably connected to the rotating connecting rod through a limiting sliding groove. A dynamic sealing gasket is provided between the moving sealing frame and the pressure plate, and an adjustment mechanism is provided on the left side of the pressure plate.

[0006] Preferably, a rolling groove is formed at the left end of the abutment plate, a plurality of placement grooves are formed at the right end of the motion sealing frame, the rotating ball is located in the placement groove, and one end of the rotating ball away from the motion sealing frame extends into the rolling groove.

[0007] Preferably, a plurality of limit columns are fixedly connected to the right inner wall of the moving sealing frame, a plurality of limit adapter holes are opened at the right end of the pressure plate, the left end of the limit column passes through the dynamic sealing gasket and extends into the limit adapter hole, and the limit column is slidably connected to the limit adapter hole.

[0008] Preferably, a static sealing ring three is provided on the inner side of the partition frame, the outer end of the pressure plate extends to the static sealing ring three, a static sealing ring two is fixedly connected to the inner wall of the auxiliary cylinder, and the adjustment mechanism is located on the inner side of the static sealing ring two.

[0009] Preferably, the adjusting mechanism includes a propulsion plate, which is annularly sleeved on the rotating connecting rod, and the outer end of the propulsion plate abuts the inner wall of the static sealing ring 2, and the rotating connecting rod is sleeved with an abutment spring, the left end of the abutment spring is fixedly connected to the right end of the propulsion plate, and the right end of the abutment spring is fixedly connected to the left end of the pressure plate, the left end of the propulsion plate is rotatably connected with an externally threaded propulsion tube, and the left end of the externally threaded propulsion tube penetrates the left side wall of the circulation shell and the left side wall of the auxiliary cylinder in sequence, and the left side wall of the circulation shell and the left side wall of the auxiliary cylinder are both slidably connected to the externally threaded propulsion tube through a limiting slide, the externally threaded propulsion tube is sleeved on the rotating connecting rod, and a static sealing ring 1 is arranged between the externally threaded propulsion tube and the rotating connecting rod, and the left end of the auxiliary cylinder is rotatably connected with an adjusting cylinder, and the left end of the externally threaded propulsion tube penetrates the left side wall of the adjusting cylinder and is threadedly connected to the left side wall of the adjusting cylinder.

[0010] Preferably, the dynamic sealing gasket is hollow.

[0011] Compared with the related art, the circulating water pump sealing connector provided by the utility model has the following beneficial effects:

[0012] 1. The utility model provides a circulating water pump sealing connector. In the device, an adjustment mechanism is arranged on the left side of the pressure plate. When the elastic force of the abutment spring weakens after long-term use and fails to provide sufficient force between the pressure plate and the moving sealing frame, the adjustment cylinder is rotated, and the adjustment cylinder cooperates with the externally threaded propulsion tube to drive the externally threaded propulsion tube and the propulsion plate to move to the right to squeeze the abutment spring, thereby ensuring that the abutment spring can provide sufficient force for the pressure plate, thereby ensuring that there is sufficient force between the pressure plate and the moving sealing frame, and the sealing effect of the dynamic sealing gasket is ensured by the cooperation between the pressure plate and the moving sealing frame.

[0013] 2. The utility model provides a circulating water pump sealing connector. In this device, a plurality of rotating balls are embedded in the right end of a moving sealing frame. The right end of the rotating ball extends into a rolling groove at the left end of an abutment plate. When in use, the moving sealing frame, the pressure plate, the dynamic sealing end, the abutment spring and the thrust plate all rotate along with the rotating connecting rod. During the rotation, the moving sealing frame and the abutment plate achieve relative rotation through the rotating balls, thereby reducing the wear between the moving sealing frame and the abutment plate, thereby increasing the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 This is a three-dimensional structural diagram showing the position of the impeller of the utility model;

[0016] Figure 3This is a schematic diagram showing the three-dimensional structure of the impeller of the utility model from another angle;

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the circulation shell position section of the utility model;

[0018] Figure 5 for Figure 4 A partial enlarged view of the middle part;

[0019] Figure 6 for Figure 4 A partial enlarged view of point B in the middle;

[0020] Figure 7 This is a schematic diagram of the explosion structure of the sealing connector in the utility model;

[0021] Figure 8 This is a schematic diagram of the exploded structure of the sealing connector in the utility model from another angle.

[0022] In the figure: 1. circulation pump; 2. circulation housing; 3. sealing cover; 4. water inlet pipe; 5. water outlet pipe; 6. fixed connecting plate; 7. rotating connecting rod; 8. impeller; 9. external threaded propulsion tube; 10. adjustment cylinder; 11. auxiliary cylinder; 12. static sealing ring one; 13. propulsion plate; 14. static sealing ring two; 15. abutment spring; 16. pressure plate; 17. limit adapter hole; 18. dynamic sealing gasket; 19. moving sealing frame; 20. limit column; 21. abutment plate; 22. rolling groove; 23. placement groove; 24. rotating ball; 25. partition frame; 26. static sealing ring three. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] Example:

[0025] See also Figure 1-Figure 8The utility model provides a technical solution: a circulating water pump sealing connector, comprising a circulating pump 1, the output end of the circulating pump 1 is fixedly connected with a rotating connecting rod 7, the right end of the circulating pump 1 is fixedly connected with a fixed connecting plate 6, the right end of the circulating pump 1 is provided with a circulating shell 2, the right end of the circulating shell 2 is provided with a sealing cover 3, the right end of the sealing cover 3 is fixedly connected with a water inlet pipe 4, the side wall of the circulating shell 2 is fixedly connected with a water outlet pipe 5, the water outlet pipe 5 is connected with the water inlet pipe 4 through the circulating shell 2, the right end of the fixed connecting plate 6 is fixedly connected with the left outer wall of the circulating shell 2, the inner side of the circulating shell 2 is provided with an impeller 8, the left end of the circulating shell 2 is fixedly connected with an auxiliary cylinder 11, the left inner wall of the circulating shell 2 is fixedly connected with a partition frame 25, the rotating connecting rod 7 The right end of the impeller 8 passes through the left side wall of the auxiliary cylinder 11, the circulation shell 2 and the right side wall of the partition frame 25 in sequence, and is fixedly connected to the left side end of the impeller 8. An abutment plate 21 is provided on the inner side of the partition frame 25. The right side end of the abutment plate 21 is fixedly connected to the right inner wall of the partition frame 25. A moving sealing frame 19 is provided on the left side of the abutment plate 21. A rotating ball 24 is provided between the moving sealing frame 19 and the abutment plate 21. A pressure plate 16 is provided on the left side of the moving sealing frame 19. Both the moving sealing frame 19 and the pressure plate 16 are annular and are sleeved on the rotating connecting rod 7. Both the moving sealing frame 19 and the pressure plate 16 are slidably connected to the rotating connecting rod 7 through a limiting sliding groove. A dynamic sealing gasket 18 is provided between the moving sealing frame 19 and the pressure plate 16. An adjustment mechanism is provided on the left side of the pressure plate 16.

[0026] A rolling groove 22 is provided at the left end of the abutment plate 21, and a plurality of placement grooves 23 are provided at the right end of the moving sealing frame 19. The rotating balls 24 are located in the placement grooves 23. One end of the rotating balls 24 away from the moving sealing frame 19 extends into the rolling groove 22. During the rotation process, the moving sealing frame 19 and the abutment plate 21 are relatively rotated by the rotating balls 24, thereby reducing the wear between the moving sealing frame 19 and the abutment plate 21, thereby increasing the service life of the device.

[0027] A plurality of limit posts 20 are fixedly connected to the right inner wall of the moving sealing frame 19, a plurality of limit adapter holes 17 are opened at the right end of the pressing plate 16, the left end of the limit post 20 penetrates the moving sealing gasket 18 and extends into the limit adapter hole 17, the limit post 20 is slidably connected with the limit adapter hole 17, and the cooperation between the limit post 20 and the limit adapter hole 17 ensures that the moving sealing frame 19 and the pressing plate 16 can realize synchronous rotation with the rotating connecting rod 7;

[0028] A static seal ring 3 26 is provided on the inner side of the partition frame 25, the outer end of the pressure plate 16 extends to the static seal ring 3 26, a static seal ring 2 14 is fixedly connected to the inner side wall of the auxiliary cylinder 11, and the adjustment mechanism is located on the inner side of the static seal ring 2 14;

[0029] The adjusting mechanism includes a push plate 13, which is annularly sleeved on the rotating connecting rod 7, and the outer end of the push plate 13 abuts against the inner wall of the static sealing ring 14. An abutting spring 15 is sleeved on the rotating connecting rod 7, and the left end of the abutting spring 15 is fixedly connected to the right end of the push plate 13, and the right end of the abutting spring 15 is fixedly connected to the left end of the pressure plate 16. The left end of the push plate 13 is rotatably connected with an externally threaded push tube 9, and the left end of the externally threaded push tube 9 passes through the left side wall of the circulation shell 2 and the left side wall of the auxiliary tube 11 in sequence. The left side wall of the circulation shell 2 and the left side wall of the auxiliary tube 11 are both slidably connected with the externally threaded push tube 9 through a limiting slideway, and the externally threaded push tube 9 is sleeved on the rotating connecting rod 7, and a static seal is arranged between the externally threaded push tube 9 and the rotating connecting rod 7. The sealing ring 12, the left end of the auxiliary cylinder 11 is rotatably connected with the adjusting cylinder 10, and the left end of the externally threaded propulsion tube 9 penetrates the left wall of the adjusting cylinder 10 and is threadedly connected with the left wall of the adjusting cylinder 10. When the elastic force of the abutment spring 15 is weakened after long-term use, resulting in failure to provide sufficient force between the pressure plate 16 and the moving sealing frame 19, by rotating the adjusting cylinder 10, the adjusting cylinder 10 cooperates with the externally threaded propulsion tube 9 to drive the externally threaded propulsion tube 9 and the propulsion plate 13 to move to the right to squeeze the abutment spring 15, thereby ensuring that the abutment spring 15 can provide sufficient force for the pressure plate 16, thereby ensuring that there is sufficient force between the pressure plate 16 and the moving sealing frame 19, and the sealing effect of the dynamic sealing gasket 18 is ensured by the cooperation between the pressure plate 16 and the moving sealing frame 19;

[0030] The dynamic sealing gasket 18 is hollow, and the hollow structure of the dynamic sealing gasket 18 achieves a sealing effect at the position of the rotating connecting rod 7.

[0031] Working principle: when in use, the water inlet pipe 4 and the water outlet pipe 5 are connected with the water to be circulated through the pipeline. As the circulation pump 1 rotates, the rotating connecting rod 7 and the impeller 8 are driven to rotate. As the impeller 8 rotates, the circulating water is discharged from the water inlet pipe 4 and discharged from the water outlet pipe 5. Under the action of the abutment spring 15, the pressure plate 16 is pushed close to the position of the moving sealing frame 19, so as to ensure that the pressure plate 16 exerts sufficient force on the dynamic sealing gasket 18 and thus ensures that the dynamic sealing gasket 18 has good sealing performance. At the same time, the static sealing ring 12, the static sealing ring 2 14 and the static sealing ring 3 26 cooperate to achieve the sealing between the circulation pump 1 and the circulation housing 2. When the elastic force of the abutment spring 15 weakens after long-term use and fails to provide sufficient force between the pressure plate 16 and the moving sealing frame 19, the adjusting cylinder 10 is rotated, and the adjusting cylinder 10 cooperates with the externally threaded propulsion tube 9 to drive The externally threaded propulsion tube 9 and the propulsion plate 13 move to the right to squeeze the abutment spring 15, thereby ensuring that the abutment spring 15 can provide sufficient force for the pressure plate 16, thereby ensuring that there is sufficient force between the pressure plate 16 and the moving sealing frame 19. The sealing effect of the dynamic sealing gasket 18 is ensured by the cooperation between the pressure plate 16 and the moving sealing frame 19. A plurality of rotating balls 24 are inlaid on the right side end of the moving sealing frame 19, and the right side end of the rotating ball 24 extends to the rolling groove 22 on the left side end of the abutment plate 21. When in use, the moving sealing frame 19, the pressure plate 16, the dynamic sealing end, the abutment spring 15 and the propulsion plate 13 all rotate with the rotating connecting rod 7. During the rotation process, the moving sealing frame 19 and the abutment plate 21 achieve relative rotation through the rotating balls 24, thereby reducing the wear between the moving sealing frame 19 and the abutment plate 21, thereby improving the service life of the equipment.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circulating water pump sealing connector, comprising a circulating pump (1), characterized in that: The output end of the circulation pump (1) is fixedly connected to a rotating connecting rod (7); the right end of the circulation pump (1) is fixedly connected to a fixed connecting plate (6); the right end of the circulation pump (1) is provided with a circulation casing (2); the right end of the circulation casing (2) is provided with a sealing cover (3); the right end of the sealing cover (3) is fixedly connected to a water inlet pipe (4); a water outlet pipe (5) is fixedly connected to the side wall of the circulation casing (2); the water outlet pipe (5) is connected to the water inlet pipe (4) through the circulation casing (2); the right end of the fixed connecting plate (6) is fixedly connected to the left outer wall of the circulation casing (2); an impeller (8) is provided on the inner side of the circulation casing (2); the left end of the circulation casing (2) is fixedly connected to an auxiliary cylinder (11); the left inner wall of the circulation casing (2) is fixedly connected to a partition frame (25); the right end of the rotating connecting rod (7) passes through the auxiliary cylinder (11) in sequence. The left side wall of the impeller (8), the right side wall of the circulation casing (2) and the partition frame (25), and is fixedly connected to the left side end of the impeller (8); an abutment plate (21) is provided on the inner side of the partition frame (25); the right side end of the abutment plate (21) is fixedly connected to the right side inner wall of the partition frame (25); a moving sealing frame (19) is provided on the left side of the abutment plate (21); a rotating ball (24) is provided between the moving sealing frame (19) and the abutment plate (21); a pressing plate (16) is provided on the left side of the moving sealing frame (19); the moving sealing frame (19) and the pressing plate (16) are both annular and sleeved on the rotating connecting rod (7); the moving sealing frame (19) and the pressing plate (16) are both slidably connected to the rotating connecting rod (7) via a limiting sliding groove; a dynamic sealing gasket (18) is provided between the moving sealing frame (19) and the pressing plate (16); and an adjusting mechanism is provided on the left side of the pressing plate (16).

2. A circulating water pump sealing connector according to claim 1, characterized in that: A rolling groove (22) is formed at the left end of the abutment plate (21), a plurality of placement grooves (23) are formed at the right end of the moving sealing frame (19), the rotating ball (24) is located in the placement groove (23), and one end of the rotating ball (24) away from the moving sealing frame (19) extends into the rolling groove (22).

3. A circulating water pump sealing connector according to claim 1, characterized in that: A plurality of limit columns (20) are fixedly connected to the right inner wall of the moving sealing frame (19), a plurality of limit adapter holes (17) are opened at the right end of the pressure plate (16), the left end of the limit column (20) passes through the moving sealing gasket (18) and extends into the limit adapter hole (17), and the limit column (20) is slidably connected to the limit adapter hole (17).

4. A circulating water pump sealing connector according to claim 1, characterized in that: A static sealing ring three (26) is arranged on the inner side of the partition frame (25), the outer end of the pressure plate (16) extends to the static sealing ring three (26), a static sealing ring two (14) is fixedly connected to the inner side wall of the auxiliary cylinder (11), and the adjustment mechanism is located on the inner side of the static sealing ring two (14).

5. A circulating water pump sealing connector according to claim 4, characterized in that: The adjusting mechanism comprises a propulsion plate (13), the propulsion plate (13) being annularly sleeved on the rotating connecting rod (7), the outer end of the propulsion plate (13) being in contact with the inner wall of the second static sealing ring (14), the rotating connecting rod (7) being sleeved with an abutment spring (15), the left end of the abutment spring (15) being fixedly connected to the right end of the propulsion plate (13), the right end of the abutment spring (15) being fixedly connected to the left end of the pressure plate (16), the left end of the propulsion plate (13) being rotatably connected to an externally threaded propulsion tube (9), the left end of the externally threaded propulsion tube (9) being sequentially penetrated The left side wall of the circulation shell (2) and the left side wall of the auxiliary cylinder (11) are penetrated. The left side wall of the circulation shell (2) and the left side wall of the auxiliary cylinder (11) are both slidably connected to the externally threaded propulsion tube (9) through a limiting slide. The externally threaded propulsion tube (9) is sleeved on the rotating connecting rod (7). A static sealing ring (12) is provided between the externally threaded propulsion tube (9) and the rotating connecting rod (7). The left side end of the auxiliary cylinder (11) is rotatably connected to the adjusting cylinder (10). The left side end of the externally threaded propulsion tube (9) penetrates the left side wall of the adjusting cylinder (10) and is threadedly connected to the left side wall of the adjusting cylinder (10).

6. A circulating water pump sealing connector according to claim 1, characterized in that: The dynamic sealing gasket (18) is hollow.

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