Mechanical sealing device convenient to disassemble and assemble

Abstract

The utility model relates to the technical field of mechanical sealing, in particular to a mechanical sealing device convenient to disassemble and assemble, which comprises a pump body, a shell is fixedly arranged on the outer wall of the pump body, the pump body and the shell are respectively provided with a through hole penetrating through the pump body and the center of the shell, and a mechanical sealing mechanism is arranged in the through hole of the shell. A fixing mechanism used for fixing the mechanical sealing mechanism and preventing the mechanical sealing mechanism from falling off from the through hole of the shell is arranged in the shell. By screwing the rotating wheel and matching the rotating gear, the second gear ring and the locking blocks, the locking blocks rotate by taking the rotating shaft as the circle center, and the space defined by the inner surfaces of the four locking blocks is gradually reduced, so that the inner surfaces of the locking blocks are attached to the outer surface of the ring seat, and the mechanical sealing mechanism is convenient to fix and disassemble; and unnecessary troubles caused by falling of the mechanical sealing mechanism due to looseness of internal parts when the equipment is used for a long time are avoided.

Description

Technical Field

[0001] This utility model relates to the field of mechanical seal technology, and in particular to a mechanical seal device that is easy to assemble and disassemble. Background Technology

[0002] A mechanical seal is a device that prevents fluid leakage by having at least one pair of end faces perpendicular to the axis of rotation, which remain in contact and slide relative to each other under the action of fluid pressure, the elastic force (or magnetic force) of the compensation mechanism, and the cooperation of auxiliary seals.

[0003] Existing technologies, such as the mechanical seal device disclosed in CN221628844U, which is easy to install and remove, utilize a movable strip that can be inserted into the inner surface of the pump body to fix the mechanical seal cover. A fixing block clamps the mechanical seal cover, and a support spring supports the fixing block and provides cushioning. A threaded post extends the support spring outwards, facilitating the removal and insertion of the mechanical seal cover. A nut allows for tightening and fixation. However, this technology has the following problems in use:

[0004] The above technology fixes the cover ring by tightening nuts during use. However, this technology is cumbersome to operate by tightening multiple nuts during installation. Furthermore, the above technology only uses four threaded posts to fix the cover ring, which can cause excessive pressure on the threaded posts. During long-term use, the fluid flowing in the equipment can cause the threaded posts to shake, resulting in excessive reaction force from the threaded posts to the nuts. This can easily lead to the nuts loosening and the mechanical seal mechanism falling off. Utility Model Content

[0005] The purpose of this invention is to solve the problem that the installation and disassembly of mechanical seal mechanisms in the prior art is cumbersome, and to propose a mechanical seal device that is easy to install and disassemble.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A mechanical seal device that is easy to assemble and disassemble includes a pump body, a housing is fixedly installed on the outer wall of the pump body, both the pump body and the housing are provided with a through hole at the center of the pump body and the housing, and a mechanical seal mechanism is provided in the through hole of the housing. A fixing mechanism is provided inside the housing to fix the mechanical seal mechanism and prevent the mechanical seal structure from falling out of the through hole of the housing.

[0008] The fixing mechanism includes a rotating shaft fixedly installed inside the housing, a locking block rotatably installed on the outer wall of the rotating shaft, four equidistantly distributed circumferential sliding grooves inside the housing, sliding blocks slidably disposed in the sliding grooves, a fixing ring fixedly installed on the top of the sliding block, three first toothed rings and one second toothed ring fixedly installed on the outer wall of the fixing ring, a rotating gear rotatably mounted inside the housing relative to the outer wall of the fixing ring via a pin, and a rotating wheel rotatably disposed on the outer wall of the housing.

[0009] Preferably, the mechanical seal mechanism includes a gasket, a stationary ring movably connected to the left side of the gasket, a rotating ring movably connected to the left side of the stationary ring, a sealing ring movably connected to the left side of the rotating ring, a fixing plate movably connected to the left side of the sealing ring, a compression spring movably connected to the left side of the fixing plate, a ring seat movably connected to the outer surface of the compression spring, a bushing movably connected to the left side of the ring seat, and a bolt movably connected to the outer surface of the bushing.

[0010] Preferably, the outer surface of the ring seat is provided with uniformly distributed circular holes, and the bushing is movably connected to the ring seat by bolts.

[0011] Preferably, the locking block consists of a half gear and a locking plate, and the half gear of the locking block meshes with the inner toothed rings of the first and second toothed rings. The three first toothed rings and one second toothed ring are equidistantly distributed on the fixed ring. The rotating gear and the outer toothed rings of the second toothed ring mesh with each other. The rotating wheel is fixedly connected to the center position of the rotating gear through a connecting rod.

[0012] Preferably, the inner surface of the locking block and the outer wall of the ring seat are in close contact.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. This utility model uses a rotating wheel to drive a rotating gear to rotate. Then, through the cooperation between the rotating gear, the second gear ring, and the locking block, the locking block rotates around the rotating shaft. This causes the space between the inner surfaces of the four locking blocks to gradually decrease, so that the inner surface of the locking block and the outer surface of the ring seat come into contact. This facilitates the fixing and disassembly of the mechanical seal mechanism and avoids unnecessary trouble caused by the mechanical seal mechanism falling off due to the loosening of internal parts during long-term use of the equipment.

[0015] 2. By setting a gasket, this utility model can play a buffering and isolation role, avoiding excessive wear of the stationary ring during operation. By setting a sealing ring, the sealing performance of the device can be improved, reducing the possibility of oil leakage. By setting a fixing plate, the compression spring can be effectively fixed inside the ring seat, preventing the compression spring from being unstable and shaking, which would affect the sealing performance of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a mechanical seal device that is easy to assemble and disassemble according to the present invention;

[0017] Figure 2 This is a front sectional view of a mechanical seal device that is easy to assemble and disassemble according to the present invention;

[0018] Figure 3 A schematic diagram of the sliding groove and rotating shaft of a mechanical seal device that is easy to assemble and disassemble according to this utility model;

[0019] Figure 4 A schematic diagram of the fixed ring and sliding block of a mechanical seal device that is easy to assemble and disassemble according to this utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the sealing mechanism of a mechanical seal device that is easy to assemble and disassemble, as proposed in this utility model.

[0021] In the diagram: 1. Pump body; 2. Housing; 3. Sliding groove; 4. Rotating shaft; 5. Locking block; 6. Fixed ring; 7. First toothed ring; 8. Second toothed ring; 9. Sliding block; 10. Rotating gear; 11. Rotating wheel; 12. Bushing; 13. Bolt; 14. Ring seat; 15. Compression spring; 16. Fixing plate; 17. Sealing ring; 18. Moving ring; 19. Stationary ring; 20. Gasket. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figures 1-5 A mechanical seal device that is easy to assemble and disassemble includes a pump body 1, a housing 2 fixedly installed on the outer wall of the pump body 1, both the pump body 1 and the housing 2 have through holes at the center of the pump body 1 and the housing 2, and a mechanical seal mechanism is provided in the through hole of the housing 2. A fixing mechanism is provided inside the housing 2 to fix the mechanical seal mechanism and prevent the mechanical seal structure from falling out of the through hole of the housing 2.

[0024] The mechanical seal mechanism includes a gasket 20. A stationary ring 19 is movably connected to the left side of the gasket 20. A rotating ring 18 is movably connected to the left side of the stationary ring 19. A sealing ring 17 is movably connected to the left side of the rotating ring 18. A fixed plate 16 is movably connected to the left side of the sealing ring 17. A compression spring 15 is movably connected to the left side of the fixed plate 16. A ring seat 14 is movably connected to the outer surface of the compression spring 15. A bushing 12 is movably connected to the left side of the ring seat 14. A bolt 13 is movably connected to the outer surface of the bushing 12.

[0025] The outer surface of the ring seat 14 is uniformly provided with round holes, and the bushing 12 is movably connected to the ring seat 14 by bolts 13;

[0026] The fixing mechanism includes a rotating shaft 4 fixedly installed inside the housing 2. A locking block 5 is rotatably installed on the outer wall of the rotating shaft 4. Four equidistantly distributed sliding grooves 3 are opened inside the housing 2. Sliding blocks 9 are slidably arranged in the sliding grooves 3. A fixing ring 6 is fixedly installed on the top of the sliding block 9. Three first toothed rings 7 and one second toothed ring 8 are fixedly installed on the outer wall of the fixing ring 6. A rotating gear 10 is rotatably installed inside the housing 2 relative to the outer wall of the fixing ring 6 via a pin. A rotating wheel 11 is rotatably arranged on the outer wall of the housing 2. Several grooves are opened on the outer wall of the rotating wheel 11. A through groove is provided on the outer wall of the housing 2 relative to the groove on the outer wall of the rotating wheel 11. After the mechanical seal mechanism is fixed by the locking block 5, a fixing rod is inserted into the groove on the outer wall of the rotating wheel 11 and the corresponding through groove on the outer wall of the housing 2 to fix the fixing mechanism.

[0027] The locking block 5 consists of a half gear and a locking plate. The half gear of the locking block 5 meshes with the inner toothed rings of the first toothed ring 7 and the second toothed ring 8. The three first toothed rings 7 and the second toothed ring 8 are equidistantly distributed on the fixed ring 6. The rotating gear 10 meshes with the outer toothed rings of the second toothed ring 8. The rotating wheel 11 is fixedly connected to the center of the rotating gear 10 through a connecting rod. The rotating gear 10 drives the second toothed ring 8 to rotate, causing the fixed ring 6 to rotate. Then, the rotation of the fixed ring 6 causes the first toothed rings 7 and the second toothed ring 8 to drive the meshed locking block 5 to rotate, thereby fixing the mechanical seal mechanism with the locking block 5.

[0028] The inner surface of the locking block 5 and the outer wall of the ring seat 14 are in close contact, which facilitates the installation and disassembly of the mechanical seal mechanism.

[0029] The functional principle of this utility model can be explained through the following operation methods:

[0030] By turning the rotating wheel 11, the connecting rod fixedly connected to the lower part of the rotating wheel 11 drives the rotating gear 10 to rotate, which in turn drives the meshing second toothed ring 8 to rotate. The second toothed ring 8 drives the fixed ring 6, causing the sliding block 9 set at the lower part of the fixed ring 6 to rotate in the sliding groove 3. This causes the fixed ring 6 to drive the three first toothed rings 7 and one second toothed ring 8, which are equidistantly distributed in a circle, to drive the meshing locking block 5 to rotate around the rotating shaft 4. This makes the inner surface of the locking block 5 and the outer wall of the ring seat 14 fit tightly together, which facilitates the fixing and disassembly of the mechanical seal mechanism.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A mechanical seal device that is easy to assemble and disassemble, comprising a pump body (1), characterized in that, The outer wall of the pump body (1) is fixedly installed with a housing (2). Both the pump body (1) and the housing (2) are provided with through holes that pass through the center of the pump body (1) and the housing (2). A mechanical seal mechanism is provided in the through hole of the housing (2). A fixing mechanism is provided inside the housing (2) to fix the mechanical seal mechanism and prevent the mechanical seal structure from falling out of the through hole of the housing (2). The fixing mechanism includes a rotating shaft (4) fixedly installed inside the housing (2), a locking block (5) rotatably installed on the outer wall of the rotating shaft (4), four equidistant circumferentially distributed sliding grooves (3) are provided inside the housing (2), a sliding block (9) is slidably arranged in the sliding groove (3), a fixing ring (6) is fixedly installed on the top of the sliding block (9), three first toothed rings (7) and one second toothed ring (8) are fixedly installed on the outer wall of the fixing ring (6), a rotating gear (10) is rotatably installed inside the housing (2) relative to the outer wall of the fixing ring (6) via a pin, and a rotating wheel (11) is rotatably arranged on the outer wall of the housing (2).

2. The mechanical seal device for easy assembly and disassembly according to claim 1, characterized in that, The mechanical seal mechanism includes a gasket (20). A stationary ring (19) is movably connected to the left side of the gasket (20). A rotating ring (18) is movably connected to the left side of the stationary ring (19). A sealing ring (17) is movably connected to the left side of the rotating ring (18). A fixing plate (16) is movably connected to the left side of the sealing ring (17). A compression spring (15) is movably connected to the left side of the fixing plate (16). A ring seat (14) is movably connected to the outer surface of the compression spring (15). A bushing (12) is movably connected to the left side of the ring seat (14). A bolt (13) is movably connected to the outer surface of the bushing (12).

3. The mechanical seal device for easy assembly and disassembly according to claim 2, characterized in that, The outer surface of the ring seat (14) is uniformly provided with round holes, and the bushing (12) and the ring seat (14) are movably connected by bolts (13).

4. The mechanical seal device for easy assembly and disassembly according to claim 1, characterized in that, The locking block (5) consists of a half gear and a locking plate. The half gear of the locking block (5) meshes with the inner tooth rings of the first tooth ring (7) and the second tooth ring (8). The three first tooth rings (7) and the second tooth ring (8) are equidistantly distributed on the fixed ring (6). The rotating gear (10) and the outer tooth rings of the second tooth ring (8) mesh with each other. The rotating wheel (11) is fixedly connected to the center of the rotating gear (10) through a connecting rod.

5. A mechanical seal device that is easy to assemble and disassemble according to claim 1, characterized in that, The inner surface of the locking block (5) and the outer wall of the ring seat (14) are in close contact.

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