Sealing pressure adjustable mechanical sealing device

Abstract

The utility model discloses a mechanical sealing device with adjustable sealing pressure, which comprises a connecting pipeline, a pipeline fixing seat, an adjusting ring, an adjusting spring and a movable ring, the movable ring is fixedly connected with a connecting rod, one end of the connecting rod is fixedly connected with an object placing ring, one side of the object placing ring far away from the movable ring is provided with an annular groove, and a backing ring is contacted in the annular groove. A fixing ring is integrally formed on the backing ring through casting, an annular gasket is fixedly connected to the fixing ring, an arc-shaped recess is formed in the outer side of the backing ring, a positioning rod is arranged at the position, located at the arc-shaped recess, of the backing ring, a ball is rotationally embedded in the bottom end of the positioning rod and makes contact with the arc-shaped recess, and the positioning rod is in threaded connection with a storage ring. According to the pipeline fixing device, the adjusting ring is rotated to drive the adjusting spring to extrude the movable ring and the storage ring, the positioning rod limits the backing ring and the fixing ring, the contact pressure of the annular gasket can be adjusted, then the backing ring and the fixing ring are limited through the positioning rod, limiting is more stable, and meanwhile the pipeline fixing device can be conveniently disassembled.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical sealing devices, in particular to a sealing pressure adjustable mechanical sealing device. Background Art

[0002] A mechanical seal is a device used to prevent liquid leakage inside mechanical equipment. It is usually composed of a dynamic ring, a static ring, a spring and a sealing ring. Its working principle is to use elastic elements such as springs or air bags to press the dynamic ring and the static ring tightly together to prevent liquid leakage. During operation, the mechanical seal will generate a lot of heat due to friction, compression and bending.

[0003] According to the Chinese patent publication number CN117145972U, "A mechanical sealing device with adjustable sealing pressure", it mainly describes that the connecting seat and the sliding seat are threadedly connected so that the sliding seat slides in the direction of the first compression spring along the direction of the connecting pipe. The first compression spring squeezes and pushes the second annular seat according to the pressure applied by the fixed connecting ring, so that the second annular seat increases the pressing force on the sealing gasket, and the pressing force between the sealing gasket and the sealing connector is increased to ensure the sealing effect. When the sealing pressure needs to be reduced, the connecting seat is rotated in the opposite direction, and the connecting seat drives the sliding seat to move in the opposite direction, and the pressure on the first compression spring is reduced. , thereby reducing the pressing force applied by the first compression spring to the sealing gasket. The staff can adjust the sealing pressure according to actual needs, so that it can adapt to the sealing requirements under different media, temperature and pressure conditions. By adjusting the sealing pressure, the sealing effect of the mechanical sealing device can be made more reliable. Appropriate sealing pressure can ensure that there is sufficient contact pressure between the seals, thereby effectively preventing medium leakage, and to a certain extent reduces the power consumption of the sealing gasket friction, reduces energy consumption, and the heat generated during the operation of the mechanical sealing device will affect the magnetic attraction effect of the magnetic attraction block, resulting in poor pressure regulation effect.

[0004] Therefore, a sealing pressure adjustable mechanical sealing device is proposed to solve the problem that the heat generated during the operation of the mechanical sealing device will affect the magnetic attraction effect of the magnetic attraction block, thereby resulting in a poor pressure regulation effect. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the heat generated during the operation of the mechanical sealing device will affect the magnetic attraction effect of the magnetic attraction block, thereby causing the problem of poor pressure regulation effect. Therefore, a sealing pressure adjustable mechanical sealing device is proposed.

[0006] The technical solution adopted by the utility model to solve the technical problem is: a sealing pressure adjustable mechanical sealing device, including a connecting pipe, a pipe fixing seat, an adjusting ring, an adjusting spring and a moving ring, the moving ring is fixedly connected with a connecting rod, one end of the connecting rod is fixedly connected with a storage ring, the storage ring is provided with an annular groove on the side away from the moving ring and a gasket is in contact with the annular groove, the gasket is integrally formed with a fixing ring by casting, the fixing ring is fixedly connected with an annular gasket, the outer side of the gasket is provided with a positioning rod, the gasket is located at the arcuate recess, a spherical ball is rotatably embedded at the bottom end of the positioning rod and the spherical ball contacts the arcuate recess, the positioning rod is threadedly connected to the storage ring, and a fixing sleeve is threadedly connected to the pipe fixing seat.

[0007] As a preferred technical solution of the utility model, a through hole is opened on one side of the adjustment ring and a spring rod is fixedly connected in the through hole, and a connecting ring is fixedly connected to one end of the spring rod. By arranging the spring rod and the connecting ring, the adjustment ring can be easily rotated.

[0008] As a preferred technical solution of the utility model, a sliding ball is rotatably embedded in one side of the connecting ring, and the sliding ball contacts the pipe fixing seat. The sliding ball is provided to reduce the rotation friction of the adjusting ring.

[0009] As a preferred technical solution of the utility model, a ring block is fixedly connected to one side of the fixing sleeve, and the ring block is in contact with the storage ring. The ring block is provided to provide a seal, thereby preventing the storage ring from being exposed and facilitating maintenance and replacement.

[0010] As a preferred technical solution of the utility model, a hidden groove is opened on one side of the storage ring, and the hidden groove corresponds to the positioning rod. By providing the hidden groove, the end of the positioning rod can be hidden.

[0011] The utility model has the following advantages: by rotating the adjusting ring, the adjusting spring is driven to squeeze the moving ring and the placing ring, and the positioning rod limits the gasket ring and the fixing ring. The contact pressure of the annular gasket can be adjusted and then the gasket ring and the fixing ring are limited by the positioning rod. The limitation is more stable and can be easily disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a side cross-sectional structural schematic diagram of a sealing pressure adjustable mechanical sealing device according to a preferred embodiment of the utility model;

[0013] Figure 2 It is a schematic diagram of the three-dimensional structure of a dynamic ring of a sealing pressure adjustable mechanical sealing device according to a preferred embodiment of the utility model;

[0014] Figure 3 It is a schematic diagram of the enlarged structure of point A of a sealing pressure adjustable mechanical sealing device in a preferred embodiment of the utility model.

[0015] Explanation of the accompanying drawings: 1. connecting pipe; 2. pipe fixing seat; 3. adjusting ring; 4. adjusting spring; 5. moving ring; 6. connecting rod; 7. storage ring; 8. gasket; 9. fixing ring; 10. annular gasket; 11. positioning rod; 12. round ball; 13. spring rod; 14. connecting ring; 15. sliding ball; 16. fixing sleeve; 17. annular block; 18. hidden groove. DETAILED DESCRIPTION

[0016] The utility model will be further described below in conjunction with the accompanying drawings.

[0017] Please refer to Figure 1-3 A sealing pressure adjustable mechanical sealing device shown in the figure comprises a connecting pipe 1, a pipe fixing seat 2, an adjusting ring 3, an adjusting spring 4 and a moving ring 5, a connecting rod 6 is fixedly connected to the moving ring 5, and a placing ring 7 is fixedly connected to one end of the connecting rod 6 (the connecting pipe 1, the pipe fixing seat 2, the adjusting ring 3, the adjusting spring 4, the moving ring 5, the connecting rod 6 and the placing ring 7 are all consistent with the structures used in the reference document), an annular groove is provided on the side of the placing ring 7 away from the moving ring 5, and a gasket 8 is contacted in the annular groove, and the gasket 8 is integrally formed with a fixing ring 9 by casting, and the fixing ring 9 is provided with a fixing ring 9. An annular gasket 10 is fixedly connected, an arc-shaped depression is opened on the outer side of the gasket 8, a positioning rod 11 is arranged at the arc-shaped depression, a spherical ball 12 is rotatably embedded in the bottom end of the positioning rod 11 and the spherical ball 12 contacts with the arc-shaped depression, and the fixing ring 9 and the annular gasket 10 can be replaced by disassembling and assembling the positioning rod 11. The positioning rod 11 is threadedly connected to the storage ring 7, and a fixing sleeve 16 is threadedly connected to the pipe fixing seat 2. The fixing sleeve 16 is rotated to shrink the distance between the fixing sleeve 16 and the pipe fixing seat 2, thereby increasing the operating space and facilitating the disassembly of the fixing ring 9 and the annular gasket 10.

[0018] Among them, the connecting ring 14 is fixedly connected to one end of the spring rod 13, and the spring rod 13 is fixedly connected in the through hole. The through hole is located on one side of the adjustment ring 3. By setting the spring rod 13 and the connecting ring 14, it is easy to rotate the adjustment ring 3, thereby adjusting the sealing pressure and making the adjustment efficiency higher.

[0019] The pipe fixing seat 2 is in contact with the sliding ball 15 , and the sliding ball 15 is rotatably embedded in one side of the connecting ring 14 . The sliding ball 15 is provided to reduce the rotation friction of the connecting ring 14 .

[0020] Among them, the storage ring 7 is in contact with the annular block 17, and the annular block 17 is fixedly connected to one side of the fixed sleeve 16. By setting the annular block 17, the shielding effect at the annular gasket 10 can be increased, and the influence of the external environment on the sealing effect at the dynamic ring 5 can be reduced.

[0021] Among them, the positioning rod 11 corresponds to the hidden groove 18, and the hidden groove 18 is located on one side of the storage ring 7. By setting the hidden groove 18, the movement problem of the fixing sleeve 16 and the annular block 17 can be reduced.

[0022] Working principle: when it is necessary to adjust the sealing pressure of the mechanical seal, rotate the connecting ring 14 to drive the spring rod 13 and the adjusting ring 3 to rotate, and make the adjusting ring 3 drive the adjusting spring 4 and the moving ring 5 to move, and then push the placement ring 7, the fixing ring 9 and the annular gasket 10 to connect to the pipeline system to prevent medium leakage. When it is necessary to replace the fixing ring 9 and the annular gasket 10, rotate the fixing sleeve 16 to move the fixing sleeve 16 to the side of the connecting ring 14. At this time, remove the positioning rod 11, rotate the connecting ring 14 to move the adjusting ring 3 to the side of the sliding ball 15. At this time, the moving ring 5 and the placement ring 7 are loose, so that the fixing ring 9 and the annular gasket 10 can be disengaged, thereby facilitating adjustment and disassembly.

[0023] The above are only preferred implementations of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

[0024] Other parts of the present invention not described in detail belong to the prior art and will not be described here.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A sealing pressure adjustable mechanical sealing device, comprising a connecting pipe (1), a pipe fixing seat (2), an adjusting ring (3), an adjusting spring (4) and a moving ring (5), characterized in that: The movable ring (5) is fixedly connected with a connecting rod (6), one end of which is fixedly connected with a storage ring (7), a side of the storage ring (7) away from the movable ring (5) is provided with an annular groove and a gasket (8) is in contact with the annular groove, the gasket (8) is integrally formed with a fixing ring (9) by casting, an annular gasket (10) is fixedly connected with the fixing ring (9), an arc-shaped depression is provided on the outer side of the gasket (8), a positioning rod (11) is arranged at the arc-shaped depression of the gasket (8), a spherical ball (12) is rotatably embedded at the bottom end of the positioning rod (11) and the spherical ball (12) is in contact with the arc-shaped depression, the positioning rod (11) is threadedly connected with the storage ring (7), and a fixing sleeve (16) is threadedly connected with the pipe fixing seat (2).

2. A sealing pressure adjustable mechanical sealing device as claimed in claim 1, characterized in that: A through hole is provided on one side of the adjustment ring (3), and a spring rod (13) is fixedly connected in the through hole; a connecting ring (14) is fixedly connected at one end of the spring rod (13).

3. A sealing pressure adjustable mechanical sealing device as claimed in claim 2, characterized in that: A sliding ball (15) is rotatably embedded on one side of the connecting ring (14), and the sliding ball (15) contacts the pipeline fixing seat (2).

4. A sealing pressure adjustable mechanical sealing device as claimed in claim 1, characterized in that: An annular block (17) is fixedly connected to one side of the fixing sleeve (16), and the annular block (17) is in contact with the storage ring (7).

5. A sealing pressure adjustable mechanical sealing device as claimed in claim 4, characterized in that: A hidden groove (18) is provided on one side of the storage ring (7), and the hidden groove (18) corresponds to the positioning rod (11).

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