Mechanical seal provided with silicon carbide wear-resisting plate

Abstract

The utility model relates to the technical field of mechanical seals, and discloses a mechanical seal with a silicon carbide wear-resisting plate, which comprises a first sealing ring, a shaft sleeve is arranged on the outer side of the first sealing ring, a second sealing ring is arranged in the shaft sleeve, a driving ring is arranged at the front end of the shaft sleeve, and a main static ring is arranged at the front end of the driving ring. According to the mechanical seal provided with the silicon carbide wear-resisting plate, the sixth sealing ring is arranged, the wear-resisting ring and the flange are sealed through the sixth sealing ring, materials are prevented from leaking into the mechanical seal, the fifth sealing ring is arranged, the flange and the wear-resisting ring are connected through the fifth sealing ring in a flexible lock catch mode and cannot be separated, and the design is ingenious; the wear-resistant ring is not subjected to the locking force of the fastening piece and cannot be broken, the wear-resistant ring is pressed on the flange to be fixed under the action of the pressure of liquid in the pump cavity, the design cost is low, machining is easy, the installation size of original equipment is not affected, a user can replace and maintain the wear-resistant ring conveniently, the service life of the equipment is prolonged, and multiple purposes are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of tube core cutting, in particular to a mechanical seal provided with a silicon carbide wear-resistant plate. Background Art

[0002] A mechanical seal is a device used to prevent fluid or gas leakage. It is usually used in the shaft seal of rotating equipment (such as pumps, compressors, mixers, etc.). Compared with traditional sealing methods (such as soft seals or packing seals), mechanical seals usually have higher sealing efficiency and longer service life.

[0003] Under strong abrasive working conditions, the contact area between the mechanical seal flange and the pump chamber is severely corroded, and the mechanical seal is quickly damaged, resulting in a reduced service life and the need for frequent replacement. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a mechanical seal provided with a silicon carbide wear-resistant plate, which can effectively solve the problems in the prior art.

[0005] The technical scheme adopted by the utility model is: a mechanical seal with a silicon carbide wear-resistant plate, comprising a sealing ring 1, a shaft sleeve is arranged on the outside of the sealing ring 1, a sealing ring 2 is arranged inside the shaft sleeve, an active ring is arranged at the front end of the shaft sleeve, a main static ring is arranged at the front end of the active ring, a sealing ring 3 is arranged on the outside of the active ring, a short sleeve is arranged on the inside of the shaft sleeve, a sealing ring 4 is sleeved on the outside of the main static ring, a flange is arranged on the outside of the sealing ring 4, a hexagon socket screw 1 is arranged at the front end of the flange, a guide sleeve is arranged on the inside of the main static ring, a main push ring is arranged at the front end of the main static ring, a spring is fixedly connected to the front end of the main push ring, a water outlet joint and a water inlet joint are arranged on the outside of the flange, a positioning clip is arranged at the front end of the flange, a hexagon socket screw 2 is arranged at the front end of the positioning clip, a half-ring is arranged in front of the positioning clip, a hexagon socket screw 3 is arranged at the front end of the half-ring, and a sealing ring 5, a sealing ring 6 and a wear-resistant ring are arranged on the inside of the flange.

[0006] Preferably, the sealing ring five and the sealing ring six are arranged between the wear-resistant ring and the flange, and the sealing ring five and the sealing ring six are both in an "O"-shaped structure.

[0007] Through the above technical solution, a sealing ring 6 is provided, and the wear-resistant ring and the flange are sealed by the sealing ring 6 to prevent the material from leaking into the mechanical seal.

[0008] Preferably, the sealing ring five is semi-embeddedly connected to the flange and the wear-resistant ring, and the flange and the wear-resistant ring are connected via a flexible locking buckle of the sealing ring five.

[0009] Through the above technical solution, a sealing ring five is provided, and the flange and the wear-resistant ring are connected by the flexible lock of the sealing ring five and cannot be separated, which is an ingenious design.

[0010] Preferably, the wear-resistant ring is made of silicon carbide ceramics, and the flange is made of 316 stainless steel.

[0011] Through the above technical solution, a wear-resistant ring made of silicon carbide ceramic is provided to replace metal and rub against the material in the pump cavity.

[0012] Preferably, the sealing ring four is arranged between the main static ring and the wear-resistant ring, and the sealing ring four is made of polyvinylidene fluoride resin.

[0013] Through the above technical solution, a sealing ring 4 made of polyvinylidene fluoride resin is provided, which has high strength and high corrosion resistance.

[0014] Preferably, the vertical cross-section of the wear-resistant ring is an "L"-shaped structure, and the wear-resistant ring is matched with the flange.

[0015] By means of the above technical solution, when the mechanical seal is installed on the pump, the wear-resistant ring is not subject to the locking force of the fastener and will not be broken. Under the action of the liquid pressure in the pump chamber, the wear-resistant ring is pressed and fixed on the flange.

[0016] Compared with the prior art, the utility model provides a mechanical seal provided with a silicon carbide wear-resistant plate, which has the following beneficial effects:

[0017] 1. The mechanical seal with silicon carbide wear-resistant plate is provided with a sealing ring 6, through which the wear-resistant ring and the flange are sealed to prevent the material from leaking into the mechanical seal, and a sealing ring 5 is provided, through which the flange and the wear-resistant ring are connected with a flexible lock of the sealing ring 5 and cannot be separated, which is a clever design;

[0018] 2. The mechanical seal with silicon carbide wear-resistant plate is provided with a wear-resistant ring made of silicon carbide ceramic to replace metal and rub against the material in the pump chamber. A sealing ring made of polyvinylidene fluoride resin is provided, which has high strength and high corrosion resistance. When the mechanical seal is installed on the pump, the wear-resistant ring is not subject to the locking force of the fastener and will not be broken. Under the action of the liquid pressure in the pump chamber, the wear-resistant ring is pressed on the flange and fixed. This design has low cost and easy processing, does not affect the installation size of the original equipment, is convenient for users to replace and maintain, and increases the service life of the equipment, achieving multiple goals at one stroke. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0020] Figure 2 This is a cross-sectional structural schematic diagram of the utility model;

[0021] Figure 3 The three-dimensional structure of the utility model is shown in FIG. Figure 2;

[0022] Figure 4 This is a schematic diagram of the split structure of the utility model;

[0023] Figure 5 For this utility model Figure 1 Schematic diagram of the K-axis plane structure.

[0024] Among them: 1. Sealing ring one; 2. Bushing; 3. Sealing ring two; 4. Active ring; 5. Main static ring; 6. Sealing ring three; 7. Short sleeve; 8. Hexagon socket screw one; 9. Sealing ring four; 10. Flange; 11. Guide sleeve; 12. Main thrust ring; 13. Spring; 14. Water outlet joint; 15. Positioning clip; 16. Hexagon socket screw two; 17. Half ring; 18. Hexagon socket screw three; 19. Water inlet joint; 20. Sealing ring five; 21. Sealing ring six; 22. Wear-resistant ring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1: Figure 1-5 As shown, the utility model provides a mechanical seal with a silicon carbide wear-resistant plate, including a sealing ring 1, a shaft sleeve 2 is arranged on the outside of the sealing ring 1, a sealing ring 2 3 is arranged inside the shaft sleeve 2, an active ring 4 is arranged at the front end of the shaft sleeve 2, a main static ring 5 is arranged at the front end of the active ring 4, a sealing ring 3 6 is arranged on the outside of the active ring 4, a short sleeve 7 is arranged on the inside of the shaft sleeve 2, a sealing ring 4 9 is sleeved on the outside of the main static ring 5, a flange 10 is arranged on the outside of the sealing ring 49, a hexagon socket screw 8 is arranged at the front end of the flange 10, and the main static ring 5 is provided with a sealing ring 4. A guide sleeve 11 is arranged on the inside, a main thrust ring 12 is arranged on the front end of the main static ring 5, a spring 13 is fixedly connected to the front end of the main thrust ring 12, a water outlet joint 14 and a water inlet joint 19 are arranged on the outside of the flange 10, a positioning clip 15 is arranged on the front end of the flange 10, a second hexagon socket screw 16 is arranged on the front end of the positioning clip 15, a half ring 17 is arranged in front of the positioning clip 15, a third hexagon socket screw 18 is arranged on the front end of the half ring 17, and a sealing ring 5 20, a sealing ring 6 21 and a wear-resistant ring 22 are arranged on the inside of the flange 10.

[0027] Specifically, the sealing ring 5 20 and the sealing ring 6 21 are arranged between the wear ring 22 and the flange 10, and the sealing ring 5 20 and the sealing ring 6 21 are both in an "O" shape. The advantage is that the sealing ring 6 21 is arranged, and the wear ring 22 and the flange 10 are sealed by the sealing ring 6 21, preventing the material from leaking into the mechanical seal.

[0028] Specifically, the sealing ring 5 20 is semi-embedded with the flange 10 and the wear ring 22, and the flange 10 and the wear ring 22 are connected by the flexible lock of the sealing ring 5 20. The advantage is that the sealing ring 5 20 is provided, and the flange 10 and the wear ring 22 are connected by the flexible lock of the sealing ring 5 20, and cannot be separated, which is a clever design.

[0029] Specifically, the wear-resistant ring 22 is made of silicon carbide ceramics, and the flange 10 is made of 316 stainless steel. The advantage is that the wear-resistant ring 22 made of silicon carbide ceramics is provided to replace metal and rub against the material in the pump cavity.

[0030] Embodiment 2: Figure 2-5 As shown, as an improvement to the previous embodiment.

[0031] Specifically, the sealing ring 49 is arranged between the main static ring 5 and the wear-resistant ring 22, and the sealing ring 49 is made of polyvinylidene fluoride resin. The advantage is that the sealing ring 49 made of polyvinylidene fluoride resin is provided, which has high strength and high corrosion resistance.

[0032] Specifically, the vertical section of the wear ring 22 is an "L"-shaped structure, and the wear ring 22 is adapted to the flange 10. The advantage is that when the mechanical seal is installed on the pump, the wear ring 22 is not subject to the locking force of the fastener and will not be broken. Under the action of the liquid pressure in the pump chamber, the wear ring 22 is pressed on the flange 10 and fixed.

[0033] Working principle: When in use, the flange 10 and the wear-resistant ring 22 are connected by the flexible lock of the sealing ring 5 20 and cannot be separated. The design is ingenious. The wear-resistant ring 22 and the flange 10 are sealed by the sealing ring 6 21 to prevent the material from leaking into the mechanical seal. The wear-resistant ring 22 is not subject to the locking force of the fastener and will not be broken. Under the action of the liquid pressure in the pump chamber, the wear-resistant ring 22 is pressed on the flange 10 and fixed. This design has low cost and easy processing. It does not affect the installation size of the original equipment, is convenient for users to replace and maintain, and increases the service life of the equipment, achieving multiple goals at one stroke.

[0034] 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 mechanical seal provided with a silicon carbide wear-resistant plate, comprising a sealing ring (1), characterized in that: A shaft sleeve (2) is arranged on the outside of the sealing ring 1 (1), a sealing ring 2 (3) is arranged inside the shaft sleeve (2), an active ring (4) is arranged at the front end of the shaft sleeve (2), a main static ring (5) is arranged at the front end of the active ring (4), a sealing ring 3 (6) is arranged on the outside of the active ring (4), a short sleeve (7) is arranged on the inside of the shaft sleeve (2), a sealing ring 4 (9) is sleeved on the outside of the main static ring (5), a flange (10) is arranged on the outside of the sealing ring 4 (9), a hexagon socket screw 1 (8) is arranged at the front end of the flange (10), a guide sleeve (11) is arranged on the inside of the main static ring (5), and the main A main thrust ring (12) is arranged at the front end of the stationary ring (5), and a spring (13) is fixedly connected to the front end of the main thrust ring (12). A water outlet joint (14) and a water inlet joint (19) are arranged on the outer side of the flange (10). A positioning clip (15) is arranged at the front end of the flange (10), and a second hexagon socket head screw (16) is arranged at the front end of the positioning clip (15). A half ring (17) is arranged in front of the positioning clip (15), and a third hexagon socket head screw (18) is arranged at the front end of the half ring (17). A sealing ring (5) (20), a sealing ring (6) (21) and a wear-resistant ring (22) are arranged on the inner side of the flange (10).

2. A mechanical seal provided with a silicon carbide wear-resistant plate according to claim 1, characterized in that: The sealing ring five (20) and the sealing ring six (21) are arranged between the wear-resistant ring (22) and the flange (10), and the sealing ring five (20) and the sealing ring six (21) are both in an "O"-shaped structure.

3. The mechanical seal provided with a silicon carbide wear-resistant plate according to claim 1, characterized in that: The sealing ring five (20) is semi-embeddedly connected to the flange (10) and the wear-resistant ring (22), and the flange (10) and the wear-resistant ring (22) are connected via the flexible locking buckle of the sealing ring five (20).

4. The mechanical seal provided with a silicon carbide wear-resistant plate according to claim 1, characterized in that: The wear-resistant ring (22) is made of silicon carbide ceramics, and the flange (10) is made of 316 stainless steel.

5. The mechanical seal provided with a silicon carbide wear-resistant plate according to claim 1, characterized in that: The sealing ring four (9) is arranged between the main static ring (5) and the wear-resistant ring (22), and the sealing ring four (9) is made of polyvinylidene fluoride resin.

6. The mechanical seal provided with a silicon carbide wear-resistant plate according to claim 1, characterized in that: The vertical cross section of the wear-resistant ring (22) is an "L"-shaped structure, and the wear-resistant ring (22) is compatible with the flange (10).

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