Mechanical seal flushing water device for stirrer

Abstract

The mechanical seal flushing water device comprises a shaft sleeve, a machine frame and a shaft rod, the shaft sleeve is fixedly connected with the shaft rod, the outer surface wall of the shaft sleeve is fixedly connected with a spacer sleeve, the inner surface wall of the machine frame is fixedly connected with a machine seal seat, and a mechanical seal part is integrated between the machine seal seat and the shaft sleeve. According to the mechanical seal device, the mechanical seal base is fixed to the machine frame, the sealing ring is fixed to the mechanical seal base, in the normal state, the shaft rod rotates, the mechanical seal can guarantee the air tightness between the mechanical seal base and the shaft rod, in the process, flushing water is introduced into the adapter, enters the sealing ring, is distributed to the multiple sets of round holes through the annular groove and enters the mechanical seal base through the round holes, and the mechanical seal base is sealed. And finally, the water overflows through multiple groups of flushing water outlets, and the overflowed water is used for flushing the mechanical seal, so that the outer side of the mechanical seal is prevented from being scraped, and the use stability of the mechanical seal is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical seal components, in particular to a mechanical seal flushing water device for a stirrer. Background Art

[0002] A mechanical seal is a device used to prevent fluid leakage and is usually installed on the shaft of rotating equipment such as pumps and stirrers. It consists of one or several pairs of end faces perpendicular to the axis. These two rings are in contact with each other and maintain contact while allowing the shaft to rotate. The key function of the mechanical seal is to maintain a leak-free or slightly leaking environment under fluid pressure, which is very important for protecting the equipment from damage and avoiding environmental pollution.

[0003] Chinese Patent Publication No. CN219082251U, published on May 26, 2023, discloses a mechanical seal for a stirrer with the following structure, including a dynamic ring assembly, a static ring assembly, and an elastic assembly. The static ring assembly includes a static ring seat and a sealing static ring. The dynamic ring assembly includes a dynamic ring seat and a sealing dynamic ring. The elastic assembly pushes the end face of the sealing static ring to closely adhere to the end face of the sealing dynamic ring to form a sealing surface. A circular groove is provided on one end face of the sealing dynamic ring. The sealing dynamic ring is tightly fitted in the circular groove, and a plurality of first threaded holes are provided on the side wall of the dynamic ring seat along the radial direction and penetrating the side wall. A locking end cover is provided at the other end of the dynamic ring seat. One end of the locking end cover is provided with a circular seal, and the other end is provided with a circular protrusion. The body of the locking end cover is embedded in the hole of the dynamic ring seat.

[0004] When the existing mechanical seal for a stirrer as described above operates in an environment with a relatively high concentration, the mechanical seal is prone to scraping slurry, which affects the service life of the mechanical seal. Therefore, it is urgent to propose a corresponding mechanical seal flushing water device for a stirrer to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to propose a mechanical seal flushing water device for a stirrer to solve the above problems.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A mechanical seal flushing water device for a stirrer includes a shaft sleeve, a frame, and a shaft rod. The shaft sleeve is fixedly connected to the shaft rod. A fixed-distance sleeve is fixedly connected to the outer surface of the shaft sleeve. A mechanical seal seat is fixedly connected to the inner surface of the frame. A mechanical seal is integrated between the mechanical seal seat and the shaft sleeve. A sealing ring is fixedly connected to the side of the mechanical seal seat away from the mechanical seal. A swivel joint is fixedly connected to the outer surface of the sealing ring. A conduction component for flushing water conduction is provided between the swivel joint and the mechanical seal seat.

[0008] Preferably, the sealing ring and the mechanical seal seat are fixed by a plurality of sets of socket head cap screws, and the plurality of sets of socket head cap screws are annularly distributed.

[0009] Preferably, a gasket is integrated between the socket head cap screw and the sealing ring, and an O-ring is integrated between the sealing ring and the mechanical seal seat.

[0010] Preferably, the cross-section of the mechanical seal seat is in a T-shaped structure, and the vertical end of the mechanical seal seat is fixedly connected to the frame by screws.

[0011] Preferably, the conduction assembly includes an annular groove formed inside the sealing ring, a round hole communicating with a flushing water outlet is formed in the horizontal end of the mechanical seal seat, and the annular groove communicates with the round hole.

[0012] Preferably, the flushing water outlet is inclined.

[0013] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0014] 1. In the present application, the mechanical seal seat is fixed to the frame, and the sealing ring is fixed to the mechanical seal seat. During normal operation, when the shaft rotates, the mechanical seal ensures the airtightness between the mechanical seal seat and the shaft. During this process, the adapter is connected to the flushing water, and the flushing water enters the sealing ring, is diverted through the annular groove to multiple round holes, enters the mechanical seal seat through the round holes, and finally overflows through multiple flushing water outlets. The overflowing water body flushes the mechanical seal to avoid slurry scraping on the outside of the mechanical seal, ensuring the stability of the mechanical seal during use.

[0015] 2. In the present application, the sealing ring is fixed to the mechanical seal seat by socket head cap screws, ensuring the convenience of disassembly and assembly of the sealing ring and the mechanical seal seat. The setting of the gasket and the O-ring ensures the airtightness of the sealing ring itself and between the sealing ring and the mechanical seal seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shows a schematic diagram of the overall structure according to an embodiment of the present utility model;

[0017] Figure 2 Shows a schematic diagram of the structure of the flushing water outlet according to an embodiment of the present utility model;

[0018] Figure 3 Shows a schematic diagram of the structure of the round hole according to an embodiment of the present utility model;

[0019] Figure 4 Shows a schematic diagram of the structure of the annular groove according to an embodiment of the present utility model.

[0020] LEGEND DESCRIPTION:

[0021] 1. Bush; 2. Adapter; 3. Sealing ring; 4. Frame; 5. Mechanical seal seat; 6. Mechanical seal; 7. Shaft rod; 8. Allen bolt; 9. Sealing gasket; 10. O-ring; 11. Spacer sleeve; 12. Annular groove; 13. Round hole; 14. Flushing water outlet. Specific embodiments

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1-4 , the present invention provides a technical solution:

[0024] A mechanical seal flushing water device for a stirrer, including a bush 1, a frame 4 and a shaft rod 7. The bush 1 is fixedly connected to the shaft rod 7. A spacer sleeve 11 is fixedly connected to the outer surface wall of the bush 1. A mechanical seal seat 5 is fixedly connected to the inner surface wall of the frame 4. And a mechanical seal 6 is integrated between the mechanical seal seat 5 and the bush 1. A sealing ring 3 is fixedly connected to the side of the mechanical seal seat 5 away from the mechanical seal 6. A transfer joint 2 is fixedly connected to the outer surface wall of the sealing ring 3. And a conduction component for flushing water conduction is provided between the transfer joint 2 and the mechanical seal seat 5.

[0025] The mechanical seal seat 5 is fixed to the frame 4, and the sealing ring 3 is fixed to the mechanical seal seat 5. Normally, when the shaft rod 7 rotates, the mechanical seal 6 will ensure the airtightness between the mechanical seal seat 5 and the shaft rod 7. During this process, the transfer joint 2 accesses the flushing water. The flushing water enters the sealing ring 3, is shunted to multiple round holes 13 through the annular groove 12, enters the mechanical seal seat 5 through the round holes 13, and finally overflows through multiple flushing water outlets 14. The overflowing water body flushes the mechanical seal 6 to prevent slurry from hanging on the outside of the mechanical seal 6 and ensure the stability of the use of the mechanical seal 6.

[0026] Specifically, as Figure 2 shown in Figure 4 , the sealing ring 3 and the mechanical seal seat 5 are fixed by multiple Allen bolts 8, and the multiple Allen bolts 8 are annularly distributed. A sealing gasket 9 is integrated between the Allen bolts 8 and the sealing ring 3, and an O-ring 10 is integrated between the sealing ring 3 and the mechanical seal seat 5. The sealing ring 3 is fixed to the mechanical seal seat 5 through the Allen bolts 8, which ensures the convenience of disassembly and assembly of the sealing ring 3 and the mechanical seal seat 5. The settings of the sealing gasket 9 and the O-ring 10 ensure the airtightness of the sealing ring 3 itself and between the sealing ring 3 and the mechanical seal seat 5.

[0027] Specifically, Figure 2 and Figure 3 As shown, the cross-section of the machine seal seat 5 is a T-shaped structure. The vertical end of the machine seal seat 5 is fixedly connected to the frame 4 by screws to ensure the convenience of disassembly and assembly of the machine seal seat 5. The conduction component includes an annular groove 12 opened inside the sealing ring 3. The horizontal end of the machine seal seat 5 is provided with a connected circular hole 13 and a flushing water outlet 14. The annular groove 12 is connected to the circular hole 13. The adapter 2 is connected to the flushing water. The flushing water enters the sealing ring 3, is diverted to multiple groups of circular holes 13 through the annular groove 12, and enters the machine seal seat 5 through the circular hole 13. Finally, it overflows through multiple groups of flushing water outlets 14. The overflowing water is used to flush the mechanical seal 6. The flushing water outlet 14 is inclined to ensure that the flushing water accurately impacts the mechanical seal 6.

[0028] Working principle: the machine seal seat 5 is fixed to the frame 4, and the sealing ring 3 is fixed to the machine seal seat 5. Under normal circumstances, the shaft 7 rotates, and the mechanical seal 6 ensures the airtightness between the machine seal seat 5 and the shaft 7. During this process, the adapter 2 is connected to the flushing water, and the flushing water enters the sealing ring 3, and is diverted to multiple groups of circular holes 13 through the annular groove 12, and enters the machine seal seat 5 through the circular holes 13, and finally overflows through multiple groups of flushing water outlets 14. The overflowed water is used to flush the mechanical seal 6 to avoid slurry hanging on the outside of the mechanical seal 6, thereby ensuring the stability of the use of the mechanical seal 6. The sealing ring 3 is fixed to the machine seal seat 5 by the hexagon socket bolt 8, which ensures the convenience of disassembly and assembly of the sealing ring 3 and the machine seal seat 5, and the setting of the sealing gasket 9 and the O-ring 10 ensures the airtightness of the sealing ring 3 itself and between the sealing ring 3 and the machine seal seat 5.

[0029] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mechanical seal flushing water device for a stirrer, comprising a shaft sleeve (1), a frame (4) and a shaft rod (7), characterized in that, The bushing (1) is fixedly connected to the shaft rod (7). A spacing sleeve (11) is fixedly connected to the outer surface wall of the bushing (1). A mechanical seal seat (5) is fixedly connected to the inner surface wall of the frame (4). A mechanical seal (6) is integrated between the mechanical seal seat (5) and the bushing (1). A sealing ring (3) is fixedly connected to the side of the mechanical seal seat (5) away from the mechanical seal (6). A swivel joint (2) is fixedly connected to the outer surface wall of the sealing ring (3). A conduction assembly for flushing water conduction is provided between the swivel joint (2) and the mechanical seal seat (5).

2. The mechanical seal flushing water device for a stirrer according to claim 1, characterized in that, The sealing ring (3) and the mechanical seal seat (5) are fixed by a plurality of sets of socket head cap screws (8), and the plurality of sets of socket head cap screws (8) are annularly distributed.

3. The mechanical seal flushing water device for a stirrer according to claim 2, characterized in that, A sealing gasket (9) is integrated between the socket head cap screw (8) and the sealing ring (3), and an O-ring (10) is integrated between the sealing ring (3) and the mechanical seal seat (5).

4. The mechanical seal flushing water device for a stirrer according to claim 3, characterized in that, The cross-section of the mechanical seal seat (5) is in a T-shaped structure, and the vertical end of the mechanical seal seat (5) is fixedly connected to the frame (4) by screws.

5. The mechanical seal flushing water device for a stirrer according to claim 4, characterized in that, The conduction assembly includes an annular groove (12) formed in the sealing ring (3). A circular hole (13) and a flushing water outlet (14) which are communicated with each other are formed in the horizontal end of the mechanical seal seat (5), and the annular groove (12) is communicated with the circular hole (13).

6. The mechanical seal flushing water device for a stirrer according to claim 5, characterized in that, The flushing water outlet (14) is inclined.

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