Mechanical sealing device convenient to maintain

Abstract

The utility model discloses a mechanical sealing device convenient to maintain, which comprises a connecting ring, a spring seat arranged below the connecting ring, a connecting sleeve integrally formed with the spring seat, a movable ring seat arranged on the outer side of the connecting sleeve, and a static ring seat arranged below the movable ring seat, the top of the spring seat is provided with a first semicircular groove corresponding to the limiting groove, a spring is installed between the limiting groove and the first semicircular groove, the spring seat is further provided with a clamping groove, the clamping groove is communicated with the first semicircular groove, and arc-shaped blocking pieces are symmetrically installed on the outer side of the spring seat. The spring can be replaced conveniently through the arc-shaped blocking piece, the clamping block, the second semi-circular groove, the first semi-circular groove, the clamping groove and the inner hexagon screw, the spring can be replaced only by disassembling the arc-shaped blocking piece, a large number of parts do not need to be disassembled, and maintenance convenience is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical seals, in particular to a mechanical seal device which is easy to maintain. Background Art

[0002] Mechanical seal is a device used to solve the sealing between the rotating shaft and the machine body. It is commonly used in rotary fluid machinery such as pumps, compressors, and reaction stirring kettles. In actual use, the springs in the mechanical seals need to be regularly inspected and maintained. If looseness or wear is found, the springs should be replaced in time.

[0003] The parts of existing mechanical seals are generally mounted one by one on the sleeve or shaft. When replacing the spring, a large number of parts need to be disassembled, the steps are very cumbersome and inconvenient for maintenance. In addition, after disassembling a large number of parts, reinstalling them may affect the sealing effect of the mechanical seal. Utility Model Content

[0004] The purpose of the utility model is to provide a mechanical sealing device which is easy to maintain, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mechanical sealing device which is easy to maintain, comprising a connecting ring, a spring seat arranged below the connecting ring, a connecting sleeve integrally formed with the spring seat, a dynamic ring seat arranged outside the connecting sleeve, and a static ring seat arranged below the dynamic ring seat, the bottom of the connecting ring is provided with a plurality of limiting grooves, the top of the spring seat is provided with a first semicircular groove corresponding to the limiting groove, a spring is installed between the limiting groove and the first semicircular groove, a clamping groove is also provided on the spring seat, and the clamping groove is connected with the first semicircular groove, an arc-shaped baffle is symmetrically installed on the outer side of the spring seat, the inner side wall of the arc-shaped baffle is provided with a clamping block matching with the clamping groove, a second semicircular groove is provided on one side of the clamping block, a through hole is penetrated through the arc-shaped baffle, a threaded hole is provided on the outer side of the spring seat, and a hexagon socket screw is threadedly connected between the through hole and the threaded hole.

[0006] As a preferred solution of the utility model, a receiving groove is provided on the outer side of the arc-shaped baffle, and the receiving groove is communicated with the through hole.

[0007] As a preferred solution of the utility model, a transmission column is provided at the bottom of the connecting ring, a transmission hole matching with the transmission column is provided at the top of the spring seat, and the spring seat is transmission-connected to the connecting ring via the transmission column.

[0008] As a preferred solution of the utility model, a transmission pin is provided on the outer side of the connecting sleeve, and a transmission groove matched with the transmission pin is provided on the outer side of the dynamic ring seat.

[0009] As a preferred solution of the utility model, a sealing ring is provided between the connecting sleeve and the dynamic ring seat.

[0010] As a preferred solution of the utility model, a dynamic ring is installed on one side of the dynamic ring seat, and a static ring is installed on one side of the static ring seat, and the dynamic ring and the static ring form a sealing end face.

[0011] As a preferred solution of the utility model, a plurality of threaded cylindrical pins are threadedly connected to the connecting ring.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the utility model facilitates the replacement of the spring by means of the arc-shaped baffle, the clamping block, the second semicircular groove, the first semicircular groove, the clamping groove and the hexagon socket screw; the spring can be replaced by simply removing the arc-shaped baffle, without the need to disassemble a large number of parts, thereby greatly improving the convenience of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model after the arc-shaped baffle is disassembled;

[0015] Figure 3 This is a schematic diagram of the structure of the spring seat of the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the arc-shaped baffle of the utility model;

[0017] Figure 5 It is a cross-sectional view of the utility model.

[0018] In the figure: 1. connecting ring; 2. threaded cylindrical pin; 3. spring; 4. hexagon socket screw; 5. transmission column; 6. dynamic ring; 7. static ring; 8. static ring seat; 9. spring seat; 10. arc-shaped baffle; 11. dynamic ring seat; 12. transmission groove; 13. transmission pin; 14. threaded hole; 15. clamping groove; 16. connecting sleeve; 17. transmission hole; 18. clamping block; 19. second semicircular groove; 20. through hole; 21. accommodating groove; 22. limiting groove; 23. sealing ring; 24. first semicircular groove. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figures 1 to 5 The utility model provides a technical solution: a mechanical sealing device that is easy to maintain, comprising a connecting ring 1, a spring seat 9 arranged below the connecting ring 1, a connecting sleeve 16 integrally formed with the spring seat 9, a dynamic ring seat 11 arranged outside the connecting sleeve 16, and a static ring seat 8 arranged below the dynamic ring seat 11, a plurality of limiting grooves 22 are provided at the bottom of the connecting ring 1, and the limiting grooves 22 are used to limit one end of the spring 3, and a first semicircular groove 24 corresponding to the limiting groove 22 is provided at the top of the spring seat 9, A spring 3 is installed between the limiting groove 22 and the first semicircular groove 24. The spring 3 is used to apply pressure to the spring seat 9. The spring seat 9 applies pressure to the dynamic ring 6 through the dynamic ring seat 11, so that the dynamic ring 6 is close to the static ring 7, thereby achieving sealing. A clamping groove 15 is also provided on the spring seat 9, and the clamping groove 15 is connected to the first semicircular groove 24. An arc-shaped baffle 10 is symmetrically installed on the outer side of the spring seat 9. When the spring 3 needs to be replaced, it is only necessary to unscrew the hexagon socket screw 4, and then remove the arc-shaped baffle 10, and then the spring 3 can be removed and installed. After replacing the new spring 3, take the arc-shaped baffle 10, align the block 18 with the card slot 15, align the through hole 20 with the threaded hole 14, and then screw on the hexagon socket screw 4, the spring 3 can be replaced without disassembling a large number of parts, which is convenient for the staff to maintain the mechanical seal. The inner wall of the arc-shaped baffle 10 is provided with a block 18 that matches the card slot 15. The block 18 is inserted into the card slot 15 to block the spring 3, preventing the spring 3 from separating from the connecting ring 1 or the spring seat 9, so as to achieve the installation and fixation of the spring 3. The block 18 can also make the installation of the arc-shaped baffle 10 more stable. A second semicircular groove 19 is provided on one side of the block 18. The second semicircular groove 19 cooperates with the first semicircular groove 24 to form a circular groove, thereby limiting one end of the spring 3 to prevent the spring 3 from deflecting. A through hole 20 is penetrated through the arc-shaped baffle 10, and a threaded hole 14 is provided on the outer side of the spring seat 9. A hexagon socket screw 4 is threadedly connected between the through hole 20 and the threaded hole 14. The hexagon socket screw 4 is used to fix the arc-shaped baffle 10 on the spring seat 9.

[0021] The outer side of the arc-shaped baffle 10 is provided with a receiving groove 21 for accommodating the head of the hexagon socket screw 4 to prevent the head of the hexagon socket screw 4 from being exposed outside the arc-shaped baffle 10 , and the receiving groove 21 is connected to the through hole 20 .

[0022] Among them, a transmission column 5 is provided at the bottom of the connecting ring 1, and a transmission hole 17 matching the transmission column 5 is provided at the top of the spring seat 9. The spring seat 9 is connected to the connecting ring 1 through the transmission column 5, so that the spring seat 9 can rotate with the connecting ring 1, and the spring seat 9 and the connecting ring 1 can move up and down to facilitate the application of force by the spring 3.

[0023] A transmission pin 13 is disposed on the outer side of the connecting sleeve 16 , and the transmission pin 13 is used to enable the connecting sleeve 16 to drive the dynamic ring seat 11 to rotate together. A transmission groove 12 matching with the transmission pin 13 is disposed on the outer side of the dynamic ring seat 11 .

[0024] A sealing ring 23 is provided between the connecting sleeve 16 and the dynamic ring seat 11 , and the sealing ring 23 is used to improve the sealing performance between the connecting sleeve 16 and the dynamic ring seat 11 .

[0025] A dynamic ring 6 is installed on one side of the dynamic ring seat 11 , and a static ring 7 is installed on one side of the static ring seat 8 . The dynamic ring 6 and the static ring 7 form a sealing end face.

[0026] Among them, a plurality of threaded cylindrical pins 2 are threadedly connected to the connecting ring 1, and the threaded cylindrical pins 2 are used to connect the connecting ring 1 with the shaft sleeve, so that the connecting ring 1 can rotate together with the shaft sleeve.

[0027] Specifically, when the spring 3 needs to be replaced, unscrew the hexagon socket screw 4, remove the arc-shaped baffle 10, the block 18 leaves the slot 15, and one end of the spring 3 is no longer blocked. Then the spring 3 can be pulled out from the limiting slot 22 at an angle, and a new spring 3 can be taken. For the convenience of installation, a part of the spring 3 can be compressed, and the spring 3 can be installed in the limiting slot 22, and the spring 3 is adjusted to a vertical state. Then, the arc-shaped baffle 10 is taken, and the block 18 is aligned with the slot 15 and inserted, and the through hole 20 is aligned with the threaded hole 14, and then the hexagon socket screw 4 is screwed on, and the spring 3 can be replaced.

[0028] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0030] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0031] Although 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 device that is easy to maintain, comprising a connecting ring (1), a spring seat (9) arranged below the connecting ring (1), a connecting sleeve (16) formed integrally with the spring seat (9), a dynamic ring seat (11) arranged outside the connecting sleeve (16), and a stationary ring seat (8) arranged below the dynamic ring seat (11), characterized in that: The bottom of the connecting ring (1) is provided with a plurality of limiting grooves (22); the top of the spring seat (9) is provided with a first semicircular groove (24) corresponding to the limiting groove (22); a spring (3) is installed between the limiting groove (22) and the first semicircular groove (24); a clamping groove (15) is further provided on the spring seat (9); and the clamping groove (15) is communicated with the first semicircular groove (24); an arc-shaped baffle (10) is symmetrically installed on the outer side of the spring seat (9); a clamping block (18) matching the clamping groove (15) is provided on the inner side wall of the arc-shaped baffle (10); a second semicircular groove (19) is provided on one side of the clamping block (18); a through hole (20) is penetrated through the arc-shaped baffle (10); a threaded hole (14) is provided on the outer side of the spring seat (9); a hexagon socket screw (4) is threadedly connected between the through hole (20) and the threaded hole (14).

2. A mechanical seal device that is easy to maintain according to claim 1, characterized in that: An accommodating groove (21) is provided on the outer side of the arc-shaped blocking piece (10), and the accommodating groove (21) is communicated with the through hole (20).

3. A mechanical seal device that is easy to maintain according to claim 1, characterized in that: A transmission column (5) is provided at the bottom of the connecting ring (1), a transmission hole (17) matching with the transmission column (5) is provided at the top of the spring seat (9), and the spring seat (9) is connected to the connecting ring (1) in a transmission manner via the transmission column (5).

4. A mechanical seal device that is easy to maintain according to claim 1, characterized in that: A transmission pin (13) is provided on the outer side of the connecting sleeve (16), and a transmission groove (12) matching with the transmission pin (13) is provided on the outer side of the moving ring seat (11).

5. The mechanical seal device easy to maintain according to claim 1, characterized in that: A sealing ring (23) is provided between the connecting sleeve (16) and the moving ring seat (11).

6. A mechanical seal device that is easy to maintain according to claim 1, characterized in that: A dynamic ring (6) is installed on one side of the dynamic ring seat (11), and a static ring (7) is installed on one side of the static ring seat (8); the dynamic ring (6) and the static ring (7) form a sealing end face.

7. A mechanical seal device that is easy to maintain according to claim 1, characterized in that: A plurality of threaded cylindrical pins (2) are threadedly connected to the connecting ring (1).

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