Mechanical sealing structure of side stirrer

Abstract

The utility model provides a mechanical sealing structure of a side stirrer, which belongs to the technical field of mechanical sealing and comprises a container body. The moving ring body is fixed on the inner wall of the container body; the static ring body is arranged on the container body through a positioning mechanism and is matched with the dynamic ring body for use; the dismounting mechanism is arranged on the static ring body and used in cooperation with the positioning mechanism, the dismounting mechanism is used for conveniently dismounting and replacing the damaged sealing ring, and specifically, the dismounting mechanism further comprises a sliding assembly arranged on the static ring body; the butt joint assembly is arranged on the static ring body and connected with the sliding assembly. The fixing assembly is arranged on the static ring body and used in cooperation with the butt joint assembly. The U-shaped fixing plate is fixed on the outer wall of the container body; the auxiliary mechanism is arranged on the U-shaped fixing plate and used in cooperation with the dismounting mechanism. The sealing ring which is in contact with the moving ring for a long time can be conveniently detached and replaced, the overall sealing performance of the mechanical seal is further improved, and the service life of the mechanical seal is further prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical seal technology, specifically relating to a mechanical seal structure for a side agitator. Background Technology

[0002] The mechanical seal structure of a side-entry agitator refers to a sealing device used on a side-entry agitator (also known as a side-injection agitator). Its main function is to prevent material from leaking out from the gap between the agitator shaft and the container wall during operation. This sealing structure typically consists of a rotating ring, a stationary ring, a spring, a sealing ring, and related auxiliary components.

[0003] Application number "CN201922027037.4" describes "a mechanical seal structure for a side agitator, including a bushing fitted on the outside of a main shaft; one end of the main shaft is connected to a main shaft housing, and the other end is connected to an agitator impeller; a rotating ring is provided on the bushing; a stationary ring is provided on a stationary ring seat, and the stationary ring seat is fixedly provided on the outside of the main shaft housing; a sealing cover is provided on the outside of the stationary ring seat; a transition chamber is provided between the sealing cover and the stationary ring seat; a first sealing element is provided between the stationary ring and the main shaft; the rotating ring is fitted into the rotating ring chamber; a spring is provided in the rotating ring chamber and is connected to the end of the rotating ring."

[0004] The aforementioned patent adds a sealing cover to the outside of the stationary ring seat and effectively reduces the deformation of the main shaft during axial movement by using a shock-absorbing component between the sealing cover and the agitator, thereby reducing the stress on the stationary ring and lowering the possibility of its damage. However, the aforementioned patent cannot disassemble and replace the sealing ring at the contact surface between the rotating ring and the stationary ring, because the sealing ring is in contact with the rotating ring for a long time, which can easily lead to wear of the sealing ring as a whole. This can cause gaps to easily appear on the sealing surface formed between the rotating ring and the stationary ring, resulting in a reduction in the overall sealing performance of the mechanical seal. Utility Model Content

[0005] The purpose of this invention is to provide a mechanical seal structure for a side agitator, which aims to solve the problem in the prior art of inconvenience in disassembling and replacing the sealing ring that is in contact with the moving ring for a long time.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A mechanical seal structure for a side agitator, comprising:

[0008] Container body;

[0009] The rotating ring body is fixed to the inner wall of the container body;

[0010] The stationary ring body is positioned on the container body via a positioning mechanism and is used in conjunction with the dynamic ring body.

[0011] The disassembly mechanism is located on the stationary ring body and works in conjunction with the positioning mechanism to facilitate the disassembly and replacement of the damaged sealing ring.

[0012] A U-shaped fixing plate is fixed to the outer wall of the container body;

[0013] An auxiliary mechanism is provided on the U-shaped fixing plate and is used in conjunction with the disassembly mechanism.

[0014] As a preferred embodiment of this utility model, the positioning mechanism includes two threaded columns symmetrically arranged, with limiting sleeves threaded onto the circumferential surface of the threaded columns, and the two ends of the stationary ring body are slidably sleeved on the circumferential surfaces of the two limiting sleeves.

[0015] As a preferred embodiment of this utility model, the disassembly mechanism further includes:

[0016] A sliding component is disposed on the stationary ring body;

[0017] A docking component is disposed on the stationary ring body and interconnected with the sliding component;

[0018] A fixing component is provided on the stationary ring body and is used in conjunction with the docking component.

[0019] As a preferred embodiment of the present invention, the sliding component includes two symmetrically arranged T-shaped grooves, and a T-shaped slider is slidably arranged on the inner wall of the T-shaped groove. The ends of the two T-shaped sliders are respectively fixed with a first sealing ring body and a second sealing ring body.

[0020] As a preferred embodiment of this utility model, the docking assembly includes two cross slots, and a cross insert is slidably provided on the inner wall of the cross slot. The cross insert is fixedly connected to the body of the second sealing ring.

[0021] As a preferred embodiment of this utility model, the fixing component includes two symmetrically arranged cavities, each cavity having a threaded hole on its inner wall, and fastening screws threaded onto the inner walls of the two threaded holes.

[0022] As a preferred embodiment of this utility model, the auxiliary mechanism includes a bidirectional lead screw, a knob fixedly provided at the end of the bidirectional lead screw, two symmetrical movable plates threaded on the circumferential surface of the bidirectional lead screw, and a T-shaped abutment plate fixedly provided on the inner side wall of the movable plate, the T-shaped abutment plate and the T-shaped groove slidingly engaging with each other.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] 1. By creating two symmetrically arranged cavities at both ends of the outer wall of the first and second sealing ring bodies, and threaded holes in the inner walls of the cavities, fastening screws are threaded into the inner walls of the two cavity threaded holes. Through the mutual cooperation of the fastening screws and the threaded holes in the inner walls of the cavities, the first and second sealing ring bodies can be disassembled and assembled. This facilitates the removal of the first and second sealing ring bodies, which have worn out due to long-term use, from the sealing surface formed between the stationary ring body and the moving ring body, further enabling replacement and improving the overall sealing performance of the mechanical seal.

[0025] 2. By fixing two threaded posts to the side wall of the container body, and providing a limiting sleeve on the circumferential surface of the threaded posts, the two ends of the stationary ring body are slidably fitted onto the circumferential surfaces of the two limiting sleeves. Through the threaded engagement of the threaded posts and the limiting sleeves, as well as the sliding engagement between the two ends of the stationary ring body and the limiting sleeves, the stationary ring body that is attached to the side wall of the container body can be effectively moved, thereby facilitating the subsequent disassembly of the first sealing ring body and the second sealing ring body. Attached Figure Description

[0026] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0027] In the attached diagram:

[0028] Figure 1 This is a first-view perspective perspective view of the mechanical seal structure of a side stirrer according to the present invention;

[0029] Figure 2 This is a first-view perspective three-dimensional sectional view of the mechanical seal structure of a side stirrer according to the present invention;

[0030] Figure 3 This is a first-view exploded perspective view of the mechanical seal structure of a side stirrer according to this utility model;

[0031] Figure 4 This is a second-view perspective perspective view of the mechanical seal structure of a side stirrer according to the present invention;

[0032] Figure 5 This is a second-view exploded perspective view of the mechanical seal structure of a side stirrer according to this utility model;

[0033] Figure 6 This utility model Figure 5 Enlarged view of point A in the middle.

[0034] In the diagram: 1. Container body; 2. Moving ring body; 3. Threaded post; 4. Limiting sleeve; 5. Stationary ring body; 6. T-shaped slide groove; 7. T-shaped slider; 8. First sealing ring body; 9. Cross slot; 10. Cross insert; 11. Second sealing ring body; 12. Cavity; 13. Fastening screw; 14. U-shaped fixing plate; 15. Two-way lead screw; 16. Knob; 17. Moving plate; 18. T-shaped contact plate. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0036] Example

[0037] Please see Figure 1-6 The present invention provides the following technical solution:

[0038] A mechanical seal structure for a side-stirring device comprises a container body 1, a dynamic ring body 2, a stationary ring body 5, a positioning mechanism, a disassembly mechanism, a U-shaped fixing plate 14, and auxiliary mechanisms, as detailed below:

[0039] Please see Figure 1 The moving ring body 2 is welded to the inner wall of the container body 1;

[0040] Please see Figure 2 The stationary ring body 5 is set on the container body 1 through a positioning mechanism and works in conjunction with the moving ring body 2.

[0041] Please see Figure 3 The positioning mechanism includes two threaded columns 3 symmetrically arranged. The two threaded columns 3 are welded to the side wall of the container body 1. The circumferential surface of the threaded column 3 is threaded with a limiting sleeve 4. The two ends of the stationary ring body 5 are slidably sleeved on the circumferential surface of the two limiting sleeves 4.

[0042] In this embodiment: by welding two threaded posts 3 to the side wall of the container body 1, and threadedly fitting limiting sleeves 4 on the circumferential surface of the threaded posts 3, and slidingly fitting the two ends of the stationary ring body 5 onto the circumferential surface of the two limiting sleeves 4, the stationary ring body 5, which is attached to the side wall of the container body 1, can be effectively moved through the threaded engagement of the threaded posts 3 and the limiting sleeves 4, as well as the sliding engagement of the two ends of the stationary ring body 5 with the limiting sleeves 4, thereby facilitating the subsequent disassembly of the first sealing ring body 8 and the second sealing ring body 11.

[0043] Please see Figure 4The disassembly mechanism is located on the stationary ring body 5 and works in conjunction with the positioning mechanism to facilitate the disassembly and replacement of the damaged sealing ring. Specifically, the disassembly mechanism also includes a sliding component located on the stationary ring body 5. Specifically, the sliding component includes two symmetrically arranged T-shaped grooves 6, which are opened on both sides of the outer wall of the stationary ring body 5. T-shaped sliders 7 are slidably arranged on the inner wall of the T-shaped grooves 6. The ends of the two T-shaped sliders 7 are respectively welded with the first sealing ring body 8 and the second sealing ring body 11. Through the sliding cooperation of the T-shaped grooves 6 and the T-shaped sliders 7, the first sealing ring body 8 and the second sealing ring body 11 can be easily disassembled from the stationary ring body 5.

[0044] Please see Figure 6 The docking component is located on the stationary ring body 5 and is connected to the sliding component. Specifically, the docking component includes two cross slots 9. The two cross slots 9 are opened at both ends of the side wall of the first sealing ring body 8. A cross insert 10 is slidably provided on the inner wall of the cross slot 9. The cross insert 10 is fixedly connected to the second sealing ring body 11, further realizing the connection and fit between the ends of the first sealing ring body 8 and the second sealing ring body 11.

[0045] Please see Figure 5 The fixing component is set on the stationary ring body 5 and works in conjunction with the docking component. Specifically, the fixing component includes two symmetrically arranged cavities 12. The two symmetrically arranged cavities 12 are respectively opened at both ends of the outer wall of the first sealing ring body 8 and the second sealing ring body 11. The inner wall of each cavity 12 is provided with a threaded hole, and the inner wall of the threaded hole of the two cavities 12 is threaded with a fastening screw 13.

[0046] In this embodiment: two symmetrically arranged cavities 12 are respectively opened at both ends of the outer wall of the first sealing ring body 8 and the second sealing ring body 11. The inner wall of each cavity 12 is provided with a threaded hole, and the inner wall of the threaded hole of the two cavities 12 is threaded with a fastening screw 13. Through the mutual cooperation between the fastening screw 13 and the threaded hole of the inner wall of the cavity 12, the first sealing ring body 8 and the second sealing ring body 11 can be combined and disassembled. This facilitates the removal of the first sealing ring body 8 and the second sealing ring body 11, which have been worn due to long-term use, from the sealing surface formed between the stationary ring body 5 and the moving ring body 2, and further realizes the replacement operation, thereby improving the overall sealing performance of the mechanical seal.

[0047] Please see Figure 3 The U-shaped fixing plate 14 is welded to the outer wall of the container body 1;

[0048] Please see Figure 5The auxiliary mechanism is located on the U-shaped fixed plate 14 and works in conjunction with the disassembly mechanism. Specifically, the auxiliary mechanism includes a bidirectional lead screw 15, which is rotatably mounted on the inner wall of the U-shaped fixed plate 14. A knob 16 is welded to the end of the bidirectional lead screw 15. Two symmetrical movable plates 17 are threaded on the circumferential surface of the bidirectional lead screw 15. A T-shaped abutment plate 18 is welded to the inner wall of the movable plate 17. The T-shaped abutment plate 18 slides and engages with the T-shaped slide groove 6. The sliding engagement between the T-shaped abutment plate 18 and the T-shaped slide groove 6 can help realize the limiting function after the T-shaped slide groove 6 and the T-shaped slider 7 are slidably connected, further improving the stability of the connection between the first sealing ring body 8, the second sealing ring body 11 and the stationary ring body 5.

[0049] The working principle and usage process of this utility model are as follows: When the sealing ring composed of the first sealing ring body 8 and the second sealing ring body 11 is in long-term contact with the moving ring body 2 and wear occurs, thus affecting the overall sealing performance of the mechanical seal, the limiting sleeve 4 can be removed from the threaded post 3 through the threaded engagement of the threaded post 3 and the limiting sleeve 4. Then, through the sliding engagement between the two ends of the stationary ring body 5 and the threaded post 3, the stationary ring body 5, which is attached to the side wall of the container body 1, can be separated. This will separate the contact surfaces of the first sealing ring body 8 and the second sealing ring body 11, which are fixedly connected to the stationary ring body 5, from the moving ring body 2. Then, by rotating the knob 16, the two moving plates 17, which are threaded onto both ends of the circumferential surface of the bidirectional screw 15, can be moved in opposite directions. Moving the ring will control the two T-shaped contact plates 18 to move out of the inner walls of the two T-shaped slide grooves 6 respectively. At this time, through the sliding engagement of the T-shaped slide grooves 6 and the T-shaped sliders 7, the sealing ring composed of the first sealing ring body 8 and the second sealing ring body 11 can be separated from the stationary ring body 5. Finally, through the engagement of the fastening screw 13 with the threaded hole of the cavity 12, and the sliding engagement of the cross slot 9 and the cross insert 10, the first sealing ring body 8 and the second sealing ring body 11 can be separated. In this way, the first sealing ring body 8 and the second sealing ring body 11 can be removed from the outer wall of the stirrer main shaft that is fixedly connected to the moving ring body 2, and then a new first sealing ring body 8 and the second sealing ring body 11 can be replaced and reassembled according to the above steps.

[0050] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A mechanical seal structure for a side-mounted agitator, characterized in that, include: Container body(1); The moving ring body (2) is fixed to the inner wall of the container body (1); The stationary ring body (5) is set on the container body (1) by a positioning mechanism and is used in conjunction with the moving ring body (2); The disassembly mechanism is located on the stationary ring body (5) and works in conjunction with the positioning mechanism to facilitate the disassembly and replacement of the damaged sealing ring. U-shaped fixing plate (14) is fixed to the outer wall of the container body (1); An auxiliary mechanism is provided on the U-shaped fixing plate (14) and is used in conjunction with the disassembly mechanism.

2. The mechanical seal structure of a side stirrer according to claim 1, characterized in that, The positioning mechanism includes two threaded columns (3) symmetrically arranged, and a limiting sleeve (4) is threaded on the circumferential surface of the threaded column (3). The two ends of the stationary ring body (5) are slidably sleeved on the circumferential surface of the two limiting sleeves (4).

3. The mechanical seal structure of a side agitator according to claim 2, characterized in that, The disassembly mechanism further includes: A sliding component is disposed on the stationary ring body (5); The docking component is disposed on the stationary ring body (5) and interconnected with the sliding component; The fixing component is located on the stationary ring body (5) and is used in conjunction with the docking component.

4. The mechanical seal structure of a side agitator according to claim 3, characterized in that, The sliding assembly includes two symmetrically arranged T-shaped grooves (6), and T-shaped sliders (7) are slidably arranged on the inner wall of the T-shaped grooves (6). The ends of the two T-shaped sliders (7) are respectively fixed with a first sealing ring body (8) and a second sealing ring body (11).

5. The mechanical seal structure of a side stirrer according to claim 4, characterized in that, The docking assembly includes two cross slots (9), and a cross insert (10) is slidably provided on the inner wall of the cross slot (9). The cross insert (10) is fixedly connected to the second sealing ring body (11).

6. The mechanical seal structure of a side agitator according to claim 5, characterized in that, The fixing component includes two symmetrically arranged cavities (12), each cavity (12) has a threaded hole on its inner wall, and fastening screws (13) are threaded on the inner walls of the two threaded holes of the cavity (12).

7. The mechanical seal structure of a side agitator according to claim 1, characterized in that, The auxiliary mechanism includes a bidirectional lead screw (15), a knob (16) is fixedly provided at the end of the bidirectional lead screw (15), and two symmetrical movable plates (17) are threaded on the circumferential surface of the bidirectional lead screw (15). A T-shaped abutment plate (18) is fixedly provided on the inner side wall of the movable plate (17), and the T-shaped abutment plate (18) slides and engages with the T-shaped groove (6).

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