Anti-corrosion pipeline connecting device for chemical production

Abstract

The utility model relates to the technical field of pipeline connection, in particular to an anti-corrosion pipeline connecting device for chemical production. According to the technical scheme, the pipe comprises a pipe body, ring shells, a ring base and wedge-shaped rings, the ring shells are symmetrically and rotationally arranged on the ring base, the two ring shells are fixed through a connecting plate, the two ring shells and the ring base form a complete pipe shell structure, a sealing rubber sleeve is arranged on the inner ring face of the pipe shell structure, a screw cylinder is arranged on the ring base, sliding cylinders are symmetrically arranged on the screw cylinder in a threaded mode, and the wedge-shaped rings are arranged on the sliding cylinders. The two sliding barrels are arranged in the annular shell, the thread meshing directions of the two sliding barrels and the screw barrel are opposite, the sliding barrels are in sliding connection with the annular shell, the two wedge-shaped rings are arranged between the annular shell and the sealing rubber sleeve, one end of each sliding barrel abuts against the vertical face of the corresponding wedge-shaped ring, the horizontal face of each wedge-shaped ring makes contact with the outer annular face of the sealing rubber sleeve, and the pipe shell structure is connected to the connecting position of the two pipe bodies in a sleeved mode. The utility model has the advantages of compact structure, reliable sealing and convenience in installation, and is particularly suitable for pipeline connection occasions which need to be frequently disassembled and assembled and are easy to corrode and wear in a chemical system.

Description

Technical Field

[0001] This utility model relates to the field of pipeline connection technology, and in particular to a corrosion-resistant pipeline connection device for chemical production. Background Technology

[0002] The transportation of various corrosive fluids in the chemical industry places high demands on the sealing and corrosion resistance of pipeline connections. Currently, common pipeline connection methods mainly include flange connections, threaded connections, and welded connections. These traditional connection methods all have varying degrees of problems in practical applications, for example:

[0003] Flange connections are bulky and cumbersome to operate, making them inconvenient in situations requiring frequent disassembly.

[0004] Threaded connections are prone to loosening or leakage due to long-term use, and are especially prone to failure in high-pressure and highly corrosive environments.

[0005] Although welded connections are strong, they cannot be disassembled, making maintenance inconvenient, and the welded areas are prone to becoming corrosion sources in highly corrosive media.

[0006] Therefore, we propose a corrosion-resistant pipeline connection device for chemical production to solve the existing problems. Utility Model Content

[0007] The purpose of this invention is to address the problems existing in the background technology by proposing a corrosion-resistant pipeline connection device for chemical production.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a corrosion-resistant pipe connection device for chemical production, comprising a pipe body, an annular shell, an annular seat, and a wedge-shaped ring. The two sides of the annular seat are symmetrically provided with two annular shells via a collar. The two annular shells are fixed to each other by various connecting plates. The two annular shells and the annular seat constitute a complete pipe shell structure. The inner annular surface of the pipe shell structure is provided with a sealing sleeve.

[0009] The ring seat is provided with a screw cylinder, and the outer walls of the screw cylinder are symmetrically threaded with sliding cylinders at both ends, and the two sliding cylinders are threaded in opposite directions to the screw cylinder. The sliding cylinders are slidably connected to the ring shell. The two wedge-shaped rings are respectively symmetrically arranged between the ring shell and the sealing sleeve. One end of the sliding cylinder abuts against the vertical surface of the wedge-shaped ring, and the horizontal surface of the wedge-shaped ring contacts the outer ring surface of the sealing sleeve.

[0010] The tube shell structure is fitted onto the connection between the two tube bodies, and the inner ring surface of the sealing sleeve contacts the outer wall of the tube body.

[0011] Preferably, the inner surface of the ring shell is provided with a sliding plate, and the outer wall of the sliding cylinder is provided with a sliding groove adapted to the sliding plate, and the bottom end of the sliding plate is slidably disposed in the sliding groove.

[0012] Preferably, the inclined angle of the wedge-shaped ring corresponds to the inclined angle of the inner wall of the ring shell, and the wedge-shaped ring is made of rubber.

[0013] Preferably, the outer ring surface of the ring seat is provided with various paddles at equal intervals, and the height of the paddles is less than the distance between the connecting plate and the outer wall of the ring seat.

[0014] Preferably, a screw is threaded onto the connecting plate, and the length of the screw is greater than the distance between the connecting plate and the outer wall of the ring seat.

[0015] Preferably, one end of the collar is fixed to the ring shell, and the other end of the collar is rotatably mounted on the ring seat.

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

[0017] This utility model of a corrosion-resistant pipe connection device for chemical production involves inserting the device into the pipe body at the connection point. The outer surfaces of the two pipe bodies contact the inner ring surface of the sealing sleeve. Then, a person holds the ring shell with one hand, keeping it stationary, and manually rotates the ring seat using a lever with the other hand. The ring seat drives the screw cylinder to rotate. At this time, through the opposite thread engagement between the screw cylinder and the two sliding cylinders, and the sliding cylinders being limited by the sliding plate to prevent rotation, the two sliding cylinders are synchronously controlled to move away from each other based on the principle of the screw. The sliding cylinders slide against the wedge ring, and the inclined surface of the wedge ring presses against the inclined surface of the ring shell. Under the action of the inclined surface, the force is partially downward. As the sliding cylinders continue to move, the wedge ring undergoes uniform downward deformation. At this time, the wedge ring deforms against the sealing sleeve, causing it to fit tightly against the outer wall of the pipe body, thereby sealing the pipe body. The sealing sleeve is made of corrosion-resistant rubber.

[0018] Furthermore, after the sealing connection between the pipes is completed, the operator manually rotates the screw. Under the thread engagement action, the screw moves on the connecting plate and abuts against the ring seat, suppressing the tendency of the ring seat to rotate on its own.

[0019] This utility model uses a paddle and a rotating ring seat to drive the screw cylinder to rotate, which can achieve quick connection and sealing by a single person. The sliding cylinder drives the wedge ring to squeeze the sealing sleeve to form axial deformation, so that the sealing sleeve is tightly attached to the outer wall of the tube, achieving uniform force sealing and avoiding leakage due to uneven local force.

[0020] The connecting plate is equipped with a screw. After installation, the screw can be rotated to press the plate against the outer wall of the ring seat, effectively restricting the rotation of the ring seat and preventing loose connection from causing sealing failure.

[0021] This device has a non-welded structure, making it easy to assemble and disassemble. It is suitable for occasions requiring frequent maintenance or replacement, and is especially suitable for chemical conveying systems that are prone to corrosion and wear. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0024] Figure 3 For the present utility model Figure 1 A schematic diagram of the cross-sectional structure;

[0025] Figure 4 For the present utility model Figure 3 A cross-sectional structural diagram.

[0026] Figure label:

[0027] 1. Tube body; 2. Ring shell; 3. Ring seat; 4. Connecting plate; 5. Screw; 6. Paddle; 7. Sealing sleeve; 8. Wedge ring; 9. Slide cylinder; 10. Screw cylinder; 11. Slide groove; 12. Slide plate; 13. Shaft collar. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1

[0030] like Figures 1-4 As shown, the present invention proposes a corrosion-resistant pipe connection device for chemical production, comprising a pipe body 1, an annular shell 2, an annular seat 3, and a wedge-shaped ring 8. Two annular shells 2 are symmetrically rotated on both sides of the annular seat 3 via a collar 13. The two annular shells 2 are fixed to each other by various connecting plates 4. The two annular shells 2 and the annular seat 3 constitute a complete pipe shell structure. A sealing sleeve 7 is provided on the inner annular surface of the pipe shell structure. The sealing sleeve 7 plays a core sealing role in the entire connection device, ensuring that there is no risk of leakage at the connection point.

[0031] A screw cylinder 10 is provided on the ring seat 3. Sliding cylinders 9 are symmetrically threaded at both ends of the outer wall of the screw cylinder 10. The two sliding cylinders 9 and the screw cylinder 10 are threaded in opposite directions. The sliding cylinders 9 are slidably connected to the ring shell 2. Two wedge rings 8 are symmetrically arranged between the ring shell 2 and the sealing sleeve 7. One end of the sliding cylinder 9 abuts against the vertical surface of the wedge ring 8. The horizontal surface of the wedge ring 8 contacts the outer ring surface of the sealing sleeve 7. The inclined angle of the wedge ring 8 corresponds to the inclined angle of the inner wall of the ring shell 2. The wedge ring 8 is made of rubber. The pipe shell structure is sleeved at the connection of the two pipe bodies 1. The inner ring surface of the sealing sleeve 7 contacts the outer wall of the pipe body 1. In the process of using the anti-corrosion pipe connection device for chemical production, this utility model can be inserted into the position to be connected of the pipe body 1. The outer surfaces of the two pipe bodies 1 contact the inner ring surface of the sealing sleeve 7. Then, the person holds the ring shell 2 with one hand to keep the ring shell 2 in place, and rotates the ring seat 3 with the other hand. The ring seat 3 drives the screw cylinder 10 to rotate.

[0032] At this point, based on the principle of the lead screw, the two sliding cylinders 9 are synchronously controlled to move away from each other. The sliding cylinders 9 slide against the wedge ring 8, and the inclined surface of the wedge ring 8 presses against the inclined surface of the ring shell 2. Under the action of the inclined surface, the force is partially downward. As the sliding cylinders 9 continue to move, the wedge ring 8 produces a uniform downward deformation. At this time, the wedge ring 8 abuts against the sealing sleeve 7 and deforms it. The sealing sleeve 7 then adheres tightly to the outer wall of the tube body 1, thereby sealing the tube body 1. Through the above structural design, the sealing component can automatically complete the sealing process by its own deformation without the use of additional tools, ensuring efficient operation and reliable sealing. The sealing sleeve 7 is made of corrosion-resistant rubber, which effectively extends the service life of the device and is suitable for various corrosive media.

[0033] Example 2

[0034] like Figures 1-4 As shown, the present invention proposes a corrosion-resistant pipe connection device for chemical production. Compared with Embodiment 1, this embodiment further includes: a sliding plate 12 is provided on the inner surface of the ring shell 2, and a sliding groove 11 adapted to the sliding plate 12 is opened on the outer wall of the sliding cylinder 9. The bottom end of the sliding plate 12 is slidably disposed in the sliding groove 11. The sliding cylinder 9 is limited by the sliding plate 12 and does not rotate, ensuring that the sliding cylinder 9 only undergoes axial displacement rather than rotation during the threaded rotation transmission process, avoiding sealing failure or device jamming, and improving control accuracy and stability.

[0035] The outer ring surface of the ring seat 3 is provided with various levers 6 at equal intervals. The height of the levers 6 is less than the distance between the connecting plate 4 and the outer wall of the ring seat 3. The operator can manually rotate the ring seat 3 through the levers 6. This structure makes it easy for the operator to operate flexibly in a space-constrained environment, effectively improving the convenience and safety of manual assembly.

[0036] A screw 5 is threaded onto the connecting plate 4. The length of the screw 5 is greater than the distance between the connecting plate 4 and the outer wall of the ring seat 3. After the sealing connection between the pipe bodies 1 is completed, the personnel manually rotate the screw 5. Under the thread engagement action, the screw 5 moves on the connecting plate 4 and abuts against the ring seat 3, suppressing the tendency of the ring seat 3 to rotate on its own. This prevents the ring seat 3 from rotating due to external vibration or medium pressure fluctuations, which could cause the seal to loosen. This further enhances the sealing stability and anti-interference ability.

[0037] In summary, while maintaining the basic sealing principle, this embodiment optimizes the device through a triple structure of sliding guide structure, convenient operation lever 6, and anti-rotation screw 5, making it more suitable for complex environments and high-frequency usage requirements in actual industrial applications, and giving it greater practicality and reliability.

[0038] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A corrosion-resistant pipe connection device for chemical production, comprising a pipe body (1), an annular shell (2), an annular seat (3), and a wedge-shaped ring (8), characterized in that: The two sides of the ring seat (3) are provided with two ring shells (2) through the symmetrical rotation of the collar (13). The two ring shells (2) are fixed to each other through each connecting plate (4). The two ring shells (2) and the ring seat (3) constitute a complete tube shell structure. The inner ring surface of the tube shell structure is provided with a sealing sleeve (7). The ring seat (3) is provided with a screw cylinder (10), and the outer walls of the screw cylinder (10) are symmetrically threaded with sliding cylinders (9) at both ends. The two sliding cylinders (9) and the screw cylinder (10) are threaded in opposite directions. The sliding cylinders (9) are slidably connected to the ring shell (2). The two wedge rings (8) are symmetrically arranged between the ring shell (2) and the sealing sleeve (7). One end of the sliding cylinder (9) abuts against the vertical surface of the wedge ring (8), and the horizontal surface of the wedge ring (8) contacts the outer ring surface of the sealing sleeve (7). The shell structure is fitted onto the connection between the two tubes (1), and the inner ring surface of the sealing sleeve (7) contacts the outer wall of the tube (1).

2. The anticorrosion pipe connecting device for chemical production according to claim 1, characterized in that: The inner surface of the ring shell (2) is provided with a sliding plate (12), and the outer wall of the sliding cylinder (9) is provided with a sliding groove (11) that is adapted to the sliding plate (12). The bottom end of the sliding plate (12) is slidably disposed in the sliding groove (11).

3. The anticorrosion pipe connecting device for chemical production according to claim 1, characterized in that: The inclined angle of the wedge ring (8) corresponds to the inclined angle of the inner wall of the ring shell (2), and the wedge ring (8) is made of rubber.

4. The anticorrosion pipe connecting device for chemical production according to claim 1, characterized in that: The outer ring surface of the ring seat (3) is provided with each paddle (6) at equal intervals, and the height of the paddle (6) is less than the distance between the connecting plate (4) and the outer wall of the ring seat (3).

5. The anticorrosion pipe connecting device for chemical production according to claim 1, characterized in that: A screw (5) is threaded onto the connecting plate (4), and the length of the screw (5) is greater than the distance between the connecting plate (4) and the outer wall of the ring seat (3).

6. The anticorrosion pipe connecting device for chemical production of claim 1, characterized in that: One end of the collar (13) is fixed on the ring shell (2), and the other end of the collar (13) is rotatably mounted on the ring seat (3).

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