A corrosion-resistant valve sealing sleeve

Abstract

This utility model provides a corrosion-resistant valve sealing sleeve, belonging to the technical field of sealing connection components. It includes a circular tube with a mounting plate A fixedly connected to its outer wall and a sealing ring A fixedly connected to its inner wall. It also includes a limiting assembly comprising a guide rod symmetrically fixedly connected to the top wall of the mounting plate A, a lifting plate slidably connected to the outer wall of the guide rod, a strong spring sleeved on the outer wall of the guide rod, a handle fixedly connected to the top wall of the lifting plate, and a locking plate fixedly connected to the bottom wall of the lifting plate. In this utility model, the sealing assembly, through the complex cooperation of the embedded block, the anti-reverse groove, and the sealing sleeve body, increases the sealing contact area and the tightness of the fit. Corrosive media can only flow out through the Z-shaped anti-reverse groove, and its tortuous path increases the resistance to media penetration, resulting in a stronger barrier effect against corrosive media and a lower risk of leakage.

Description

Technical Field

[0001] This utility model relates to the field of sealing connection technology, and more specifically, to a corrosion-resistant valve sealing sleeve. Background Technology

[0002] Corrosion-resistant valves are key components in pipeline fluid transport systems used to control the flow of fluids such as water, steam, oil, and various corrosive media. They are subject to prolonged contact with various corrosive substances, therefore requiring extremely high corrosion resistance and sealing performance from themselves and their connections. Valve sleeves, as an important auxiliary structure connecting the valve and pipeline, primarily enhance the sealing and stability of the connection, preventing leakage of corrosive media due to improper connection, while also reducing environmental erosion of the connection area and extending the service life of the valve and pipeline system.

[0003] A search revealed Chinese patent application CN202021794446.3, which discloses a sealing connector for a corrosion-resistant valve. The connector includes a circular tube containing a cylindrical tube. A sealing ring is fixedly bonded to one end of the cylindrical tube inside the tube, with one side of the sealing ring tightly against the inner wall of the circular tube. One end of the cylindrical tube extends out from the circular tube and is welded to a second mounting plate. The inner wall of the circular tube has symmetrically formed grooves, with buffer pads at both ends of the grooves. A slider is placed within the grooves, with one side of the slider welded to the side of the cylindrical tube. A roller is movably mounted below the slider, with its lower end abutting against the bottom of the inner wall of the groove. A guide rod is bonded and fixed between the buffer pads. A first mounting plate is welded and sleeved above the end of the circular tube near the cylindrical tube. A limiting mechanism is provided between the first and second mounting plates. A connecting mechanism is provided at the end of the circular tube away from the first mounting plate. A second connecting pipe is welded to one side of the second mounting plate.

[0004] Although the aforementioned patent utilizes a slider that moves along a guide rod within a groove to facilitate the movement of the cylinder within the circular tube, and a roller positioned below the slider reduces friction and promotes sliding, this implementation method is advantageous for adjusting the distance of the sealing connector, thereby connecting pipes of different distances. However, it still has the following shortcomings in use: In the prior art, the connectors for corrosion-resistant valves have two main problems: 1. Adjustment is slow due to the use of two threaded rods, and only one threaded rod engages with the nut for positioning, while the other side relies on the connecting pipe B, resulting in insufficient structural stability and a tendency to loosen during use; 2. The sealing structure is relatively simple, making it prone to leakage of corrosive media, affecting the normal use of the valve and connecting pipe.

[0005] Therefore, there is an urgent need for a corrosion-resistant valve sealing sleeve to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a corrosion-resistant valve sealing sleeve to solve the problems mentioned in the background art.

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0008] A corrosion-resistant valve sealing sleeve includes a circular tube, with a mounting plate A fixedly connected to the outer wall of the circular tube and a sealing ring A fixedly connected to the inner wall of the circular tube, and further includes:

[0009] The limiting assembly includes a guide rod symmetrically fixedly connected to the top wall of the mounting plate A, a lifting plate slidably connected to the outer wall of the guide rod, a strong spring sleeved on the outer wall of the guide rod, a handle fixedly connected to the top wall of the lifting plate, and a locking plate fixedly connected to the bottom wall of the lifting plate. The strong spring is fixedly connected to the lifting plate, and the end of the strong spring away from the lifting plate is fixedly connected to the guide rod.

[0010] A guide component is disposed on the inner wall of the mounting plate A, and the guide component cooperates with the limiting component;

[0011] A sealing assembly is installed on the inner wall of the circular tube.

[0012] As a preferred technical solution of this application, the guide assembly includes a sliding frame slidably connected to the inner wall of the mounting plate A, slots evenly distributed on the top wall of the sliding frame, a positioning plate fixedly connected to the inner wall of the sliding frame, an adjusting screw rotatably connected to the inner wall of the positioning plate, and a mounting plate B rotatably connected to the end of the adjusting screw away from the positioning plate. The adjusting screw is threadedly connected to the mounting plate A, and the slots are slidably connected to the mounting plate.

[0013] As a preferred technical solution of this application, the sealing assembly includes an inner block fixedly connected to the inner wall of the circular tube, a backflow prevention groove formed on the outer wall of the inner block, and a sealing sleeve body sleeved on the outer wall of the inner block and the backflow prevention groove, wherein the backflow prevention groove has a Z-shaped structure.

[0014] As a preferred technical solution of this application, a cylinder is fixedly connected to the side wall of the mounting plate B, a sealing ring B is fixedly connected to the outer wall of the cylinder, and the outer wall of the sealing ring B abuts against the inner wall of the cylindrical tube. A connecting pipe B is also fixedly connected to the side wall of the mounting plate B.

[0015] As a preferred technical solution of this application, a connecting pipe A is provided between the round tube and the embedded block, and the outer wall of the connecting pipe A abuts against the outer wall of the sealing ring A, and the outer wall of the connecting pipe A abuts against the outer wall of the sealing sleeve body.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] In the scheme of this application:

[0018] 1. By adjusting the screw to move the sliding frame, and with the positioning of the limit component's plate and slot, the distance between connecting pipe B and connecting pipe A can be precisely adjusted to meet the connection requirements of valves and pipes with different spacing. The strong spring continuously ensures that the plate and slot are tightly engaged, and the guide rod guides the sliding plate. The cooperation between the sliding frame and the mounting plate A is more stable, reducing the possibility of loosening during use. The structure is more robust, solving the problem of slow adjustment speed and insufficient structural stability after connection, which is caused by adjusting with two threaded rods in the existing technology, and only one side of the threaded rod is engaged with the nut for positioning, while the other side relies on the connecting pipe B.

[0019] 2. By using a complex combination of an embedded block, a backflow preventer groove, and the sealing sleeve body, the sealing contact area and the tightness of the fit are increased through the design of the sealing components. Corrosive media can only flow out through the Z-shaped backflow preventer groove, which increases the resistance to media penetration through its tortuous path. This results in a stronger barrier effect against corrosive media and a lower risk of leakage. It solves the problem that the existing sealing structure is relatively simple and prone to leakage of corrosive media, which affects the normal use of valves and connecting pipes. Attached Figure Description

[0020] Figure 1 A schematic diagram of the overall structure of the corrosion-resistant valve sealing sleeve provided in this application;

[0021] Figure 2 A schematic diagram of the internal structure of the circular tube of the corrosion-resistant valve sealing sleeve provided in this application;

[0022] Figure 3 A schematic diagram of the embedded block portion of the corrosion-resistant valve sealing sleeve provided in this application;

[0023] Figure 4 A schematic diagram of the lifting plate portion of the corrosion-resistant valve sealing sleeve provided in this application;

[0024] Figure 5 A schematic diagram of part B of the mounting plate for the corrosion-resistant valve sealing sleeve provided in this application.

[0025] The image shows:

[0026] 1. Round tube; 2. Connecting tube A; 3. Sealing ring A; 4. Inner block; 5. Sealing sleeve body; 6. Anti-reverse groove; 7. Mounting plate A; 8. Sliding frame; 9. Mounting plate B; 10. Cylinder; 11. Sealing ring B; 12. Slot; 13. Positioning plate; 14. Adjusting screw; 15. Guide rod; 16. Lifting plate; 17. Strong spring; 18. Handle; 19. Clamping plate; 20. Connecting tube B. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0028] like Figure 1-5 As shown, the corrosion-resistant valve sealing sleeve proposed in this embodiment includes a circular tube 1, a mounting plate A7 fixedly connected to the outer wall of the circular tube 1, and a sealing ring A3 fixedly connected to the inner wall of the circular tube 1. It also includes:

[0029] The limiting assembly includes a guide rod 15 symmetrically fixedly connected to the top wall of the mounting plate A7, a lifting plate 16 slidably connected to the outer wall of the guide rod 15, a strong spring 17 sleeved on the outer wall of the guide rod 15, a handle 18 fixedly connected to the top wall of the lifting plate 16, and a locking plate 19 fixedly connected to the bottom wall of the lifting plate 16. The strong spring 17 is fixedly connected to the lifting plate 16, and the end of the strong spring 17 away from the lifting plate 16 is fixedly connected to the guide rod 15. When the handle 18 is pulled, the lifting plate 16 slides upward along the guide rod 15, compressing the strong spring 17. The locking plate 19 disengages from the locking groove 12 of the sliding frame 8, releasing the limiting function.

[0030] A guide assembly is disposed on the inner wall of the mounting plate A7, and the guide assembly and the limiting assembly cooperate with each other;

[0031] A sealing assembly is disposed on the inner wall of the circular tube 1.

[0032] like Figure 2 and Figure 5 As shown, in a preferred embodiment, based on the above method, the guide assembly further includes a sliding frame 8 slidably connected to the inner wall of the mounting plate A7, slots 12 evenly distributed on the top wall of the sliding frame 8, a positioning plate 13 fixedly connected to the inner wall of the sliding frame 8, an adjusting screw 14 rotatably connected to the inner wall of the positioning plate 13, and a mounting plate B9 rotatably connected to the end of the adjusting screw 14 away from the positioning plate 13. The adjusting screw 14 is threadedly connected to the mounting plate A7, and the slots 12 are slidably connected to the mounting plate 19. Rotating the adjusting screw 14, due to its threaded connection to the mounting plate A7, pushes the sliding frame 8 to slide on the inner wall of the mounting plate A7, causing the mounting plate B9, cylinder 10, and connecting pipe B20 to move until the connecting pipe B20 is aligned with the pipe to be connected. Releasing the handle 18 resets the strong spring 17, lowers the lifting plate 16, and the mounting plate 19 engages with the corresponding slot 12, fixing the position of the sliding frame 8.

[0033] like Figure 3As shown, in a preferred embodiment, based on the above method, the sealing assembly further includes an embedded block 4 fixedly connected to the inner wall of the circular pipe 1, a backflow prevention groove 6 formed on the outer wall of the embedded block 4, and a sealing sleeve body 5 sleeved on the outer wall of the embedded block 4 and the backflow prevention groove 6. The backflow prevention groove 6 has a Z-shaped structure. The backflow prevention groove 6 of the embedded block 4 enhances the tightness of the sealing sleeve body 5. The sealing sleeve body 5 abuts against the outer wall of the connecting pipe A2. Corrosive media can only flow out through the Z-shaped backflow prevention groove 6. The tortuous path increases the resistance to media penetration, resulting in a stronger barrier effect against corrosive media.

[0034] like Figure 2 As shown, in a preferred embodiment, based on the above method, a cylinder 10 is fixedly connected to the side wall of the mounting plate B9, and a sealing ring B11 is fixedly connected to the outer wall of the cylinder 10. The outer wall of the sealing ring B11 abuts against the inner wall of the cylindrical tube 1. A connecting pipe B20 is also fixedly connected to the side wall of the mounting plate B9. The sealing ring B11 on the outer wall of the cylinder 10 abuts against the inner wall of the cylindrical tube 1 to jointly enhance the seal. Finally, the connecting pipe B20 and the cylinder 10 are fused together.

[0035] like Figure 2 As shown, in a preferred embodiment, based on the above method, a connecting pipe A2 is further provided between the round tube 1 and the inner block 4, and the outer wall of the connecting pipe A2 abuts against the outer wall of the sealing ring A3, the outer wall of the connecting pipe A2 abuts against the outer wall of the sealing sleeve body 5, the connecting pipe A2 is connected to the anti-corrosion valve, and its outer wall abuts against the sealing ring A3 on the inner wall of the round tube 1 to form a preliminary seal.

[0036] Specifically, when using this corrosion-resistant valve sealing sleeve: the connecting pipe A2 is connected to the corrosion-resistant valve, and its outer wall abuts against the sealing ring A3 on the inner wall of the round pipe 1, forming a preliminary seal; pull the handle 18, the lifting plate 16 slides upward along the guide rod 15, compressing the strong spring 17, and the locking plate 19 disengages from the locking groove 12 of the sliding frame 8, releasing the limit; rotate the adjusting screw 14, which, due to its threaded connection with the mounting plate A7, pushes the sliding frame 8 to slide on the inner wall of the mounting plate A7, driving the mounting plate B9, the cylinder 10, and the connecting pipe B20 to move until the connecting pipe B20 is aligned with the pipe to be connected; release the handle. 18. The strong spring 17 returns to its original position, the lifting plate 16 moves down, and the locking plate 19 snaps into the corresponding slot 12, fixing the position of the sliding frame 8. In the sealing assembly, the anti-reverse groove 6 of the embedded block 4 enhances the tightness of the sealing sleeve body 5. The sealing sleeve body 5 abuts against the outer wall of the connecting pipe A2. Corrosive media can only flow out through the Z-shaped anti-reverse groove 6. The tortuous path increases the resistance to media penetration, making the barrier effect against corrosive media stronger. The sealing ring B11 on the outer wall of the cylinder 10 abuts against the inner wall of the round pipe 1, jointly strengthening the seal. Finally, the connecting pipe B20 and the cylinder 10 are fused together.

[0037] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present utility model.

Claims

1. A corrosion-resistant valve sealing sleeve, comprising a circular tube (1), characterized in that, The outer wall of the circular tube (1) is fixedly connected to a mounting plate A (7), and the inner wall of the circular tube (1) is fixedly connected to a sealing ring A (3). The tube also includes: The limiting assembly includes a guide rod (15) symmetrically fixedly connected to the top wall of the mounting plate A (7), a lifting plate (16) slidably connected to the outer wall of the guide rod (15), a strong spring (17) sleeved on the outer wall of the guide rod (15), a handle (18) fixedly connected to the top wall of the lifting plate (16), and a clamping plate (19) fixedly connected to the bottom wall of the lifting plate (16). The strong spring (17) is fixedly connected to the lifting plate (16), and one end of the strong spring (17) away from the lifting plate (16) is fixedly connected to the guide rod (15). A guide component is disposed on the inner wall of the mounting plate A (7), and the guide component cooperates with the limiting component; A sealing assembly is provided on the inner wall of the circular tube (1).

2. The corrosion-resistant valve sealing sleeve according to claim 1, characterized in that, The guide assembly includes a sliding frame (8) slidably connected to the inner wall of the mounting plate A (7), slots (12) evenly distributed on the top wall of the sliding frame (8), a positioning plate (13) fixedly connected to the inner wall of the sliding frame (8), an adjusting screw (14) rotatably connected to the inner wall of the positioning plate (13), and a mounting plate B (9) rotatably connected to the end of the adjusting screw (14) away from the positioning plate (13). The adjusting screw (14) is threadedly connected to the mounting plate A (7), and the slots (12) are slidably connected to the mounting plate (19).

3. The corrosion-resistant valve sealing sleeve according to claim 1, characterized in that, The sealing assembly includes an inner block (4) fixedly connected to the inner wall of the round tube (1), a reverse-blocking groove (6) opened on the outer wall of the inner block (4), and a sealing sleeve body (5) sleeved on the outer wall of the inner block (4) and the reverse-blocking groove (6). The reverse-blocking groove (6) has a Z-shaped structure.

4. The corrosion-resistant valve sealing sleeve according to claim 2, characterized in that, A cylinder (10) is fixedly connected to the side wall of the mounting plate B (9), and a sealing ring B (11) is fixedly connected to the outer wall of the cylinder (10). The outer wall of the sealing ring B (11) abuts against the inner wall of the cylindrical tube (1). A connecting pipe B (20) is also fixedly connected to the side wall of the mounting plate B (9).

5. The corrosion-resistant valve sealing sleeve according to claim 1, characterized in that, A connecting pipe A (2) is provided between the round tube (1) and the inner block (4), and the outer wall of the connecting pipe A (2) abuts against the outer wall of the sealing ring A (3), and the outer wall of the connecting pipe A (2) abuts against the outer wall of the sealing sleeve body (5).

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