Pump main shaft mechanical seal for high-temperature medium

Abstract

The utility model belongs to the technical field of pump shaft sealing, and discloses a pump main shaft mechanical seal for high-temperature media. Comprising a pump machine, a base is fixedly connected to the bottom of the pump machine, a pump shell is fixedly connected to one side of the pump machine, a conveying pipe is fixedly connected to the top end of the pump shell, a pump shaft is fixedly connected to the output end of the pump machine, a mounting cavity is formed in the inner wall of the pump shell, and a static ring is fixedly connected to one side of the inner wall of the mounting cavity. A rotating rod can be driven to move towards the outer side through threads in a rotating ring, a limiting ring and a mounting plate can be driven to move together when the rotating rod moves, a second sealing plate can be moved away from the top end of a transfer pipe, a first sealing plate can be moved to the bottom of a connecting pipe, and the bottom of the connecting pipe is sealed; and the lubricating oil in the containing container is downwards conveyed into the mounting cavity through the conveying pipe, the spring, the movable ring and other structures in the mounting cavity are lubricated, and the problem that lubricating oil is inconvenient to add into the mechanical seal of the pump shaft is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pump shaft seals, and more specifically, to a pump main shaft mechanical seal for high-temperature media. Background Art

[0002] A pump main shaft mechanical seal refers to a dynamic sealing device installed in pump equipment for the pump main shaft. It can prevent the fluid medium in the water pump volute from flowing out of the water pump through the pump shaft. The pump main shaft mechanical seal is usually composed of a dynamic ring, a static ring, a spring and a sealing element. The dynamic ring rotates with the pump shaft, while the static ring is fixed to the pump casing. Through the elastic force of the elastic element and the pressure of the sealing fluid, the end faces of the dynamic ring and the static ring can fit tightly to form an effective seal.

[0003] In the prior art, for mechanical seals working in high-temperature media for a long time, the direct friction between the dynamic ring and the static ring is relatively high, which causes wear and heat between the dynamic ring and the static ring. In this case, it is necessary to add lubricating oil to the dynamic ring and the static ring. The lubricating oil can reduce the direct friction between the dynamic ring and the static ring, thereby reducing wear and heat. However, the existing method of adding lubricating oil usually requires disassembling the mechanical seal, so adding lubricating oil is more troublesome. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention proposes a pump main shaft mechanical seal for high-temperature media.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mechanical seal for a pump main shaft of a high-temperature medium, comprising a pump machine, wherein the bottom of the pump machine is fixedly connected to a base, one side of the pump machine is fixedly connected to a pump casing, the top of the pump casing is fixedly connected to a transmission pipe, the output end of the pump machine is fixedly connected to a pump shaft, the inner wall of the pump casing is provided with a mounting cavity, one side of the inner wall of the mounting cavity is fixedly connected to a static ring, the other side of the inner wall of the pump casing is fixedly connected to a spring, one side of the spring is fixedly connected to a dynamic ring, the dynamic ring is attached to one side of the static ring, the top of the pump machine is fixedly connected to a connecting plate, one side of the connecting plate is fixedly connected to a supporting plate, the top of the supporting plate is fixedly connected to a storage tank, the bottom of the storage tank is fixedly connected to a connecting pipe, and the bottom of the connecting pipe is fixedly connected to a placement The top of the pump is connected to the upholstery unit and the bottom of the pump is connected to the upholstery unit of claim 1, wherein the pump extends into the inner wall of the pump casing and the inner wall of the pump casing is connected to the upholstery unit.

[0006] Furthermore, the outer wall of the rotating ring is fixed with convex teeth, and the convex teeth are provided in multiple groups and distributed circumferentially on the outer wall of the rotating ring. The side of the rotating rod away from the limiting ring is fixed with a limiting plate.

[0007] Furthermore, a loading tube is fixedly connected to the top of the storage tank, the loading tube is funnel-shaped, and a cover plate is fixedly connected to the top of the loading tube.

[0008] Furthermore, a filter plate is fixedly connected to the inner wall of the storage tank, and a top of the filter plate is provided with multiple groups of filter holes.

[0009] Furthermore, a mounting groove is provided on one side of the storage tank, and a glass sheet is fixed to the inner wall of the mounting groove.

[0010] The technical effects and advantages of the utility model of a pump main shaft mechanical seal for high temperature media are as follows:

[0011] By rotating the swivel, the thread inside the swivel can drive the rotating rod to move outward. When the rotating rod moves, it will drive the limit ring and the mounting plate to move together. The second sealing plate can be removed from the top of the transmission pipe, and the first sealing plate can be moved to the bottom of the connecting pipe to close the bottom of the connecting pipe. The lubricating oil in the container is transmitted downward into the mounting cavity through the transmission pipe, and the spring, dynamic ring and other structures in the mounting cavity are lubricated, which solves the problem that it is inconvenient to add lubricating oil to the mechanical seal of the pump shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0013] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present utility model.

[0014] Figure 3 for Figure 2 A is an enlarged structural diagram of FIG.

[0015] Figure 4 for Figure 3 Enlarged schematic diagram of point B.

[0016] Figure 5 This is a schematic diagram of the mounting plate structure in the present utility model.

[0017] Figure 6 This is a schematic diagram of the storage tank structure in the present utility model.

[0018] In the picture:

[0019] 1. Pump; 2. Base; 3. Pump casing; 4. Transfer pipe; 5. Pump shaft; 6. Static ring; 7. Dynamic ring; 8. Spring; 9. Connecting plate; 10. Support plate; 11. Storage tank; 12. Connecting pipe; 13. Placement container; 14. Transfer pipe; 15. Mounting cylinder; 16. Rotating plate; 17. Rotating ring; 18. Rotating rod; 19. Mounting plate; 20. Limiting ring; 21. First sealing plate; 22. Second sealing plate; 23. Protruding teeth; 24. Limiting plate; 25. Loading tube; 26. Cover plate; 27. Filter plate; 28. Glass sheet. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example 1

[0022] Reference Figure 1-6 , a pump main shaft mechanical seal for high-temperature media, including a pump machine 1, the bottom of the pump machine 1 is fixedly connected to a base 2, one side of the pump machine 1 is fixedly connected to a pump casing 3, the top of the pump casing 3 is fixedly connected to a transmission pipe 4, the output end of the pump machine 1 is fixedly connected to a pump shaft 5, the inner wall of the pump casing 3 is provided with a mounting cavity, one side of the inner wall of the mounting cavity is fixedly connected to a static ring 6, the other side of the inner wall of the pump casing 3 is fixedly connected to a spring 8, one side of the spring 8 is fixedly connected to a dynamic ring 7, the dynamic ring 7 is attached to one side of the static ring 6, the top of the pump machine 1 is fixedly connected to a connecting plate 9, one side of the connecting plate 9 is fixedly connected to a supporting plate 10, the top of the supporting plate 10 is fixedly connected to a storage tank 11, the bottom of the storage tank 11 is fixedly connected to a connecting pipe 12, the bottom of the connecting pipe 12 is fixedly connected to a placement container 13, the bottom of the placement container 13 is fixedly connected to a transmission pipe 14. The bottom of the transfer pipe 14 extends into the inner wall of the pump casing 3. The inner wall of the transfer pipe 14 is communicated with the mounting cavity. A mounting cylinder 15 is fixedly connected to one side of the placement container 13. A rotating plate 16 is rotatably connected to one side of the mounting cylinder 15. A swivel 17 is fixedly connected to one side of the swivel plate 16. A rotating rod 18 is slidably connected to the inner wall of the placement container 13. The outer wall of one end of the rotating rod 18 is provided with a thread. The inner wall of the swivel 17 is also provided with a thread. The swivel 17 is threadedly connected to the outer wall of the rotating rod 18. The other end of the rotating rod 18 is rotatably connected to the inner wall of the limiting ring 20. A mounting plate 19 is fixedly connected to one side of the limiting ring 20. The top of the mounting plate 19 is fixedly connected to a first sealing plate 21. The bottom of the mounting plate 19 is fixedly connected to a second sealing plate 22. The second sealing plate 22 is provided at the top of the transfer pipe 14.

[0023] In order to solve the problem that it is inconvenient to add lubricating oil to the mechanical seal of the pump shaft 5, when the pump machine 1 is running, the pump shaft 5 can be driven to rotate, thereby pumping out the water in the pump casing 3 to one side, and through the cooperation between the static ring 6, the dynamic ring 7 and the spring 8, the pump shaft 5 is sealed when it rotates. When it is necessary to add lubricating oil to the mechanical seal of the pump shaft 5, the second sealing plate 22 is located at the top of the transfer pipe 14, and the first sealing plate 21 is located at the top of the inner wall of the placement container 13. The lubricating oil in the storage tank 11 can flow into the placement container 13 through the connecting pipe 12, and then the swivel 17 can be rotated. When the swivel 17 rotates, it will drive the swivel plate 16 on one side to rotate on the side of the mounting cylinder 15, which can adjust the rotation trajectory of the swivel 17. When the rotating plate 16 rotates, the rotating rod 18 will be driven to move outward through the thread. When the rotating rod 18 moves outward, it will drive the limiting ring 20 and the mounting plate 19 to move together. When the mounting plate 19 moves, it will drive the first sealing plate 21 and the second sealing plate 22 to move toward the side of the rotating plate 16, so that the second sealing plate 22 can be removed from the top of the transfer tube 14, and the first sealing plate 21 can be moved to the bottom of the connecting tube 12, so that the bottom of the connecting tube 12 can be sealed, and the lubricating oil in the container 13 can be transmitted downward through the transfer tube 14, and a specified amount of lubricating oil can be dripped into the mounting cavity, and the spring 8 and the dynamic ring 7 and other structures in the mounting cavity can be lubricated to avoid excessive loss of lubricating oil when transmitting high-temperature media.

[0024] Reference Figure 5 The outer wall of the rotating ring 17 is fixed with protruding teeth 23. The protruding teeth 23 are provided in multiple groups and are distributed circumferentially on the outer wall of the rotating ring 17. The side of the rotating rod 18 away from the limiting ring 20 is fixed with a limiting plate 24.

[0025] By arranging multiple groups of convex teeth 23 on the outer wall of the swivel 17, when the swivel ring 7 needs to be rotated, the friction force of the outer wall of the swivel 17 can be increased through the convex teeth 23. By arranging a limit plate on one side of the rotating rod 18, a limit can be provided for one end of the rotating rod 18 to prevent one end of the rotating rod 18 from moving into the swivel 17.

[0026] Reference Figure 6 The top of the storage tank 11 is fixedly connected with a loading pipe 25 , the loading pipe 25 is funnel-shaped, and the top of the loading pipe 25 is fixedly connected with a cover plate 26 .

[0027] By arranging the funnel-shaped loading pipe 25 at the top of the storage tank 11 , when lubricating oil needs to be added to the storage tank 11 , the lubricating oil can be conveniently added to the storage tank 11 through the funnel-shaped loading pipe 25 .

[0028] Reference Figure 3 A filter plate 27 is fixedly connected to the inner wall of the storage tank 11, and a plurality of filter holes are provided on the top of the filter plate 27.

[0029] By providing a filter plate 27 inside the storage tank 11 , the lubricating oil in the storage tank 11 can be filtered to prevent larger impurities from being stuck in the connecting pipe 12 .

[0030] Reference Figure 6 A mounting groove is provided on one side of the storage tank 11, and a glass piece 28 is fixed to the inner wall of the mounting groove.

[0031] By providing a mounting groove on one side of the storage tank 11 , it is convenient to install the glass piece 28 . By providing the glass piece 28 , it is convenient to observe the remaining amount of lubricating oil in the storage tank 11 , so as to add lubricating oil to the storage tank 11 in time.

[0032] Working principle: In order to solve the problem that it is inconvenient to add lubricating oil to the mechanical seal of the pump shaft 5, when the pump 1 is running, the pump shaft 5 can be driven to rotate, thereby pumping out the water in the pump housing 3 to one side, and through the cooperation between the static ring 6, the dynamic ring 7 and the spring 8, the pump shaft 5 is sealed when it rotates. When it is necessary to add lubricating oil to the mechanical seal of the pump shaft 5, the second sealing plate 22 is located at the top of the transfer pipe 14, and the first sealing plate 21 is located at the top of the inner wall of the container 13, so that the storage tank 11 can be opened. The lubricating oil in the rotating ring 17 flows into the placing container 13 through the connecting pipe 12, and then the rotating ring 17 can be rotated. By arranging multiple sets of convex teeth 23 on the outer wall of the rotating ring 17, when the rotating ring 7 needs to be rotated, the friction of the outer wall of the rotating ring 17 can be increased through the convex teeth 23. When the rotating ring 17 rotates, it will drive the rotating plate 16 on one side to rotate on the side of the mounting cylinder 15, which can limit the rotation trajectory of the rotating ring 17. When the rotating plate 16 rotates, it will drive the rotating rod 18 to move outward through the thread. When the rotating rod 18 moves outward, it will bring The movable limit ring 20 moves together with the mounting plate 19. When the mounting plate 19 moves, the first sealing plate 21 and the second sealing plate 22 are driven to move toward the side of the rotating plate 16, so that the second sealing plate 22 can be removed from the top of the transmission tube 14 and the first sealing plate 21 is moved to the bottom of the connecting tube 12, so that the bottom of the connecting tube 12 can be sealed and the lubricating oil in the container 13 can be transmitted downward through the transmission tube 14. A specified amount of lubricating oil can be dripped into the mounting cavity and the spring 8 and the movable ring 7 and other structures in the mounting cavity can be energized. Lubrication treatment can avoid excessive loss of lubricating oil when transmitting high-temperature media. When lubricating oil needs to be added to the storage tank 11, it is convenient to add the lubricating oil to the storage tank 11 through the funnel-shaped loading tube 25. By arranging a filter plate 27 inside the storage tank 11, the lubricating oil in the storage tank 11 can be filtered to prevent larger impurities from being stuck in the connecting tube 12. By arranging a glass piece 28, it is helpful to observe the remaining amount of lubricating oil in the storage tank 11, so as to facilitate timely replenishment of lubricating oil in the storage tank 11.

[0033] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pump main shaft mechanical seal for high temperature media, characterized in that: The invention comprises a pump (1), wherein the bottom of the pump (1) is fixedly connected to a base (2), one side of the pump (1) is fixedly connected to a pump housing (3), the top of the pump housing (3) is fixedly connected to a transmission pipe (4), the output end of the pump (1) is fixedly connected to a pump shaft (5), the inner wall of the pump housing (3) is provided with an installation cavity, one side of the inner wall of the installation cavity is fixedly connected to a static ring (6), the other side of the inner wall of the pump housing (3) is fixedly connected to a spring (8), and one side of the spring (8) is fixedly connected to a dynamic ring (7), the dynamic ring (7) is attached to one side of the static ring (6), the top of the pump (1) is fixedly connected to a connecting plate (9), one side of the connecting plate (9) is fixedly connected to a supporting plate (10), the top of the supporting plate (10) is fixedly connected to a storage tank (11), the bottom of the storage tank (11) is fixedly connected to a connecting pipe (12), the bottom of the connecting pipe (12) is fixedly connected to a placement container (13), the bottom of the placement container (13) is fixedly connected to a transfer pipe (14), the The bottom of the transfer pipe (14) extends into the inner wall of the pump housing (3), and the inner wall of the transfer pipe (14) is connected to the installation cavity. A mounting cylinder (15) is fixedly connected to one side of the placement container (13), and a rotating plate (16) is rotatably connected to one side of the installation cylinder (15). A rotating ring (17) is fixedly connected to one side of the rotating plate (16). A rotating rod (18) is slidably connected to the inner wall of the placement container (13), and the outer wall of one end of the rotating rod (18) is provided with a thread. The rotating ring ( The inner wall of the rotating ring (17) is also provided with a thread, the rotating ring (17) is threadedly connected to the outer wall of the rotating rod (18), and the other end of the rotating rod (18) is rotatably connected to the inner wall of the limiting ring (20), and one side of the limiting ring (20) is fixedly connected to a mounting plate (19), the top end of the mounting plate (19) is fixedly connected to a first sealing plate (21), and the bottom of the mounting plate (19) is fixedly connected to a second sealing plate (22), and the second sealing plate (22) is provided at the top end of the transfer tube (14).

2. A pump main shaft mechanical seal for high temperature media according to claim 1, characterized in that: The outer wall of the rotating ring (17) is fixedly connected with convex teeth (23), and the convex teeth (23) are provided in multiple groups and distributed circumferentially on the outer wall of the rotating ring (17). The side of the rotating rod (18) away from the limiting ring (20) is fixedly connected with a limiting plate (24).

3. A pump main shaft mechanical seal for high temperature media according to claim 2, characterized in that: The top end of the storage tank (11) is fixedly connected with a loading pipe (25), the loading pipe (25) is funnel-shaped, and the top end of the loading pipe (25) is fixedly connected with a cover plate (26).

4. A pump main shaft mechanical seal for high temperature media according to claim 3, characterized in that: A filter plate (27) is fixedly connected to the inner wall of the storage tank (11), and a plurality of filter holes are provided on the top of the filter plate (27).

5. A pump main shaft mechanical seal for high temperature media according to claim 4, characterized in that: A mounting groove is provided on one side of the storage tank (11), and a glass sheet (28) is fixedly connected to the inner wall of the mounting groove.

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