Corrosion-resistant pipe orifice sealing assembly for chemical production

Abstract

The utility model provides a corrosion-resistant pipe orifice sealing assembly for chemical production, and relates to the technical field of chemical equipment sealing, the corrosion-resistant pipe orifice sealing assembly comprises a pipeline, the right side of the surface of the pipeline is fixedly connected with a flange plate, the right side of the flange plate is provided with a cover plate, and the inside of the cover plate is in threaded connection with a spiral adjusting structure. By arranging the pipeline, the flange plate, the cover plate, the spiral adjusting structure, the sealing plug, the flexible sealing structure and the limiting structure, sealing of the pipeline can be effectively achieved, the positions of the cover plate and the sealing plug are adjusted through the spiral adjusting structure, the surface of the sealing plug is made to make close contact with the inner wall of the pipeline, and secondary sealing is conducted through the flexible sealing structure; the sealing effect is improved, stable installation of the cover plate on the flange plate can be guaranteed through the design of the limiting structure, the cover plate is prevented from loosening or falling off, the sealing performance is further enhanced, the through holes and the limiting structure are used in cooperation, installation and disassembly are more convenient and faster, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of sealing technology for chemical equipment, and in particular to a corrosion-resistant pipe sealing assembly for chemical production. Background Technology

[0002] In chemical production, pipe fittings are critical components connecting various equipment and pipelines, playing a vital role in the chemical process. The design, material selection, installation, and maintenance of pipe fittings must strictly adhere to relevant standards and specifications to ensure the safe, efficient, and stable operation of chemical production. In chemical production, pipe fittings are typically used to transport fluid media such as raw materials, products, waste gas, and wastewater. These media often exhibit characteristics such as high temperature, high pressure, corrosiveness, or toxicity; therefore, the material of the pipe fittings must possess excellent corrosion resistance, high temperature resistance, high pressure resistance, and sealing performance. Common pipe fitting materials include carbon steel, stainless steel, alloy steel, and plastics.

[0003] In existing technologies, pipe openings used in chemical production need to be sealed during use. However, the existing sealing components for chemical production pipe openings are prone to leaks due to uneven preload, and traditional flange bolts are easy to loosen and inconvenient to disassemble and assemble. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a corrosion-resistant pipe sealing assembly for chemical production that achieves both corrosion resistance and sealing performance. This solves the problems of uneven pre-tightening force leading to sealing failure and leakage in existing pipe sealing assemblies for chemical production, as well as the ease with which traditional flange bolts loosen and are inconvenient to install and disassemble.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a corrosion-resistant pipe sealing assembly for chemical production, comprising a pipe, a flange fixedly connected to the right side of the pipe surface, a cover plate provided on the right side of the flange, and a spiral adjustment structure internally threaded onto the cover plate.

[0006] A sealing plug is fitted on the left side of the spiral adjustment structure. The surface of the sealing plug is in close contact with the inner wall of the pipe. A flexible sealing structure for secondary sealing of the pipe is fixedly connected to the left side of the sealing plug.

[0007] The left side of the cover plate is fixedly connected to a limiting structure for limiting the cover plate. The left side of the limiting structure passes through the flange and extends to the left side of the flange. There are three limiting structures, which are evenly distributed. The surface of the flange is provided with six through holes that cooperate with the limiting structures.

[0008] Furthermore, the spiral adjustment structure includes a screw, the surface of which is threadedly connected to a screw sleeve, the surface of which is fixedly connected to the interior of the cover plate, the left side of which penetrates the sealing plug and extends into the interior of the sealing plug, a bearing seat is sleeved on the left side of the screw surface, and a sealing pressure plate is fixedly connected to the left side of the bearing seat, the surface of which is tightly fitted with the inner wall of the sealing plug.

[0009] Furthermore, the flexible sealing structure includes a flexible sealing ring, the inner ring of which is provided with a limiting ring, the right side of which is fixedly connected to the left side of the sealing plug, the right side of which is fixedly connected to a connecting pipe for circulating air through the sealing pressure plate, the right side of which passes through the flexible sealing ring and extends into the interior of the sealing plug, and the surfaces of the flexible sealing ring and the sealing plug are coated with a corrosion-resistant composite layer.

[0010] Furthermore, the limiting structure includes a connecting column, the right side of which is fixedly connected to the left side of the cover plate, the left side of which extends through a through hole to the left side of the flange, a positioning pin is provided inside the connecting column, the bottom of which penetrates the connecting column and extends to the bottom of the connecting column, the right side of which contacts and engages with the left side of the flange, the cross-section of the positioning pin on the side inside the connecting column is larger than the cross-section on the outside of the connecting column, and a moving groove for the positioning pin to move is provided inside the connecting column.

[0011] Furthermore, a handle for rotating the screw is fixedly connected to the right side of the screw, and a sealing ring is sleeved on the surface of the sealing plate. The surface of the sealing ring is in sealing contact with the inner wall of the sealing plug. There are two sealing rings, which are symmetrically distributed.

[0012] Furthermore, the right side of the connecting tube is protruding for stable connection with the sealing plug. The inner ring of the limiting ring is fixedly connected with a reinforcing block. The right side of the reinforcing block is fixedly connected to the left side of the sealing plug. There are several reinforcing blocks, which are evenly distributed.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model effectively seals pipelines by incorporating a pipe, flange, cover plate, spiral adjustment structure, sealing plug, flexible sealing structure, and limiting structure. The spiral adjustment structure adjusts the position of the cover plate and sealing plug, ensuring close contact between the surface of the sealing plug and the inner wall of the pipe. The flexible sealing structure provides secondary sealing, enhancing the sealing effect. The limiting structure ensures stable installation of the cover plate on the flange, preventing loosening or detachment and further strengthening the sealing performance. The combined use of the through hole and the limiting structure makes installation and disassembly more convenient and quick, improving work efficiency.

[0015] 2. This utility model, by setting a spiral adjustment structure, can easily adjust the tightness between the sealing pressure plate and the inner wall of the sealing plug by rotating the screw, thereby achieving flexible control of the sealing effect. The screw sleeve is fixedly connected to the cover plate, ensuring the stability of the structure, while the setting of the bearing seat makes the screw rotate more smoothly, reducing friction and wear.

[0016] 3. This utility model, by setting a flexible sealing structure and a limiting ring, ensures a stable connection between the flexible sealing ring and the sealing plug, preventing displacement or detachment under high pressure or high temperature environments, thereby improving the reliability and durability of the seal. The design of the connecting pipe allows the sealing pressure plate to smoothly introduce air into the interior of the flexible sealing ring when pushing air, achieving rapid sealing action and improving sealing efficiency. The corrosion-resistant composite layer coated on the surface of the flexible sealing ring and the sealing plug can effectively resist the erosion of various corrosive media, extend the service life of the sealing structure, and reduce maintenance costs.

[0017] 4. This utility model effectively and securely connects the cover plate and the flange by setting a limiting structure. The connecting column acts as a bridge, not only connecting the cover plate and the flange, but also achieving precise positioning through the internal positioning pin. The bottom of the positioning pin penetrates the connecting column and contacts and engages with the left side of the flange, increasing the stability and reliability of the connection. The cross-section of the positioning pin on the side inside the connecting column is larger than the cross-section on the outside of the connecting column. This design prevents the positioning pin from easily falling off and improves the stability of the structure. The movable groove opened inside the connecting column provides space for the movement of the positioning pin, making the installation and adjustment process more flexible and convenient.

[0018] 5. This utility model, by setting a handle and a sealing ring, makes it easy for users to manually rotate the screw to adjust the position of the sealing plate. The operation is simple and quick. The surface of the sealing plate is fitted with two symmetrically distributed sealing rings, which ensures the sealing performance between the sealing plug and the sealing plate, effectively prevents air leakage, and improves the overall sealing effect and safety.

[0019] 6. This utility model achieves a stable connection with the sealing plug by setting a protruding structure on the right side of the connecting pipe, effectively preventing the sealing plug from loosening or falling off during use. The reinforcing block fixedly connected by the inner ring of the limiting ring enhances the connection strength between the sealing plug and the connecting pipe. The number of reinforcing blocks is several and they are evenly distributed to ensure the uniformity and stability of the connection. Attached Figure Description

[0020] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a sectional perspective view of the pipeline;

[0023] Figure 3 This is a sectional perspective view of the sealing plug;

[0024] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle.

[0025] In the diagram: 1. Pipe; 2. Flange; 3. Cover plate; 4. Sealing plug; 5. Through hole; 6. Screw; 7. Screw sleeve; 8. Bearing seat; 9. Sealing pressure plate; 10. Flexible sealing ring; 11. Limiting ring; 12. Connecting pipe; 13. Connecting column; 14. Positioning pin; 15. Moving groove; 16. Rotary handle; 17. Sealing ring; 18. Reinforcing block. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of this utility model.

[0028] A corrosion-resistant pipe sealing assembly for chemical production includes a pipe 1, a flange 2 fixedly connected to the right side of the surface of the pipe 1, a cover plate 3 provided on the right side of the flange 2, and a spiral adjustment structure internally threaded onto the cover plate 3.

[0029] A sealing plug 4 is fitted on the left side of the spiral adjustment structure. The surface of the sealing plug 4 is in close contact with the inner wall of the pipe 1. A flexible sealing structure for secondary sealing of the pipe 1 is fixedly connected to the left side of the sealing plug 4.

[0030] The left side of the cover plate 3 is fixedly connected with a limiting structure for limiting the cover plate 3. The left side of the limiting structure passes through the flange 2 and extends to the left side of the flange 2. There are three limiting structures, which are evenly distributed. The surface of the flange 2 is provided with six through holes 5 that cooperate with the limiting structure.

[0031] Please see Figure 2 , Figure 3 and Figure 4 , Figure 2 This is a sectional perspective view of the pipeline; Figure 3 This is a sectional perspective view of the sealing plug; Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle.

[0032] The spiral adjustment structure includes a screw 6, with a threaded sleeve 7 connected to the surface of the screw 6. The surface of the sleeve 7 is fixedly connected to the interior of the cover plate 3. The left side of the screw 6 passes through the sealing plug 4 and extends into the interior of the sealing plug 4. A bearing seat 8 is fitted on the left side of the screw 6. A sealing pressure plate 9 is fixedly connected to the left side of the bearing seat 8. The surface of the sealing pressure plate 9 fits tightly with the inner wall of the sealing plug 4, allowing for easy adjustment of the tightness between the sealing pressure plate 9 and the inner wall of the sealing plug 4 by rotating the screw 6, thereby achieving flexible control of the sealing effect. The fixed connection between the sleeve 7 and the cover plate 3 ensures the stability of the structure, while the bearing seat 8 makes the screw 6 rotate more smoothly, reducing friction and wear.

[0033] The flexible sealing structure includes a flexible sealing ring 10. A limiting ring 11 is provided on the inner ring of the flexible sealing ring 10. The right side of the limiting ring 11 is fixedly connected to the left side of the sealing plug 4. A connecting pipe 12 for the air to be pushed by the sealing pressure plate 9 is fixedly connected to the right side of the flexible sealing ring 10. The right side of the connecting pipe 12 passes through the flexible sealing ring 10 and extends into the interior of the sealing plug 4. A corrosion-resistant composite layer is coated on the surfaces of the flexible sealing ring 10 and the sealing plug 4. The limiting ring 11 ensures a stable connection between the flexible sealing ring 10 and the sealing plug 4, preventing displacement or detachment under high pressure or high temperature conditions, thereby improving the reliability and durability of the seal. The design of the connecting pipe 12 allows the sealing pressure plate 9 to smoothly introduce air into the interior of the flexible sealing ring 10 when pushing air, achieving rapid sealing action and improving sealing efficiency. The corrosion-resistant composite layer coated on the surfaces of the flexible sealing ring 10 and the sealing plug 4 effectively resists the erosion of various corrosive media, extending the service life of the sealing structure and reducing maintenance costs.

[0034] The limiting structure includes a connecting post 13, the right side of which is fixedly connected to the left side of the cover plate 3. The left side of the connecting post 13 extends through a through hole 5 to the left side of the flange 2. A positioning pin 14 is provided inside the connecting post 13, with its bottom penetrating the connecting post 13 and extending to its bottom. The right side of the positioning pin 14 contacts and engages with the left side of the flange 2. The cross-section of the positioning pin 14 inside the connecting post 13 is larger than the cross-section outside the connecting post 13. A moving groove 15 is provided inside the connecting post 13 for the positioning pin 14 to move, which can effectively connect the cover plate 3 and the flange 2. The connecting column 13 acts as a bridge, connecting the cover plate 3 and the flange 2. It also achieves precise positioning through the internal positioning pin 14. The bottom of the positioning pin 14 penetrates the connecting column 13 and contacts and engages with the left side of the flange 2, which increases the stability and reliability of the connection. The cross-section of the positioning pin 14 on the side inside the connecting column 13 is larger than the cross-section on the outside of the connecting column 13. This design prevents the positioning pin 14 from easily falling off and improves the stability of the structure. The moving groove 15 opened inside the connecting column 13 provides space for the movement of the positioning pin 14, making the installation and adjustment process more flexible and convenient.

[0035] A handle 16 for rotating the screw 6 is fixedly connected to the right side of the screw 6. A sealing ring 17 is fitted on the surface of the sealing plate 9. The surface of the sealing ring 17 is in sealing contact with the inner wall of the sealing plug 4. There are two sealing rings 17, which are symmetrically distributed, making it easy for the user to manually rotate the screw 6 to adjust the position of the sealing plate 9. The operation is simple and quick. The two symmetrically distributed sealing rings 17 on the surface of the sealing plate 9 ensure the sealing performance between the sealing plug 4 and the sealing plate 9, effectively prevent air leakage, and improve the overall sealing effect and safety.

[0036] The right side of the connecting pipe 12 is raised for a stable connection with the sealing plug 4. The inner ring of the limiting ring 11 is fixedly connected to a reinforcing block 18. The right side of the reinforcing block 18 is fixedly connected to the left side of the sealing plug 4. There are several reinforcing blocks 18, which are evenly distributed, to achieve a stable connection with the sealing plug 4 and effectively prevent the sealing plug 4 from loosening or falling off during use. The reinforcing blocks 18 fixedly connected to the inner ring of the limiting ring 11 enhance the connection strength between the sealing plug 4 and the connecting pipe 12. The number of reinforcing blocks 18 and their even distribution ensure the uniformity and stability of the connection.

[0037] Working Principle: This utility model achieves the sealing of pipe 1 through a series of precisely designed structures. In use, the screw 6 is first rotated by rotating the handle 16. Since the screw sleeve 7 is fixedly connected to the cover plate 3, the rotation of the screw 6 will push the sealing pressure plate 9 to move to the left. The sealing pressure plate 9 is connected to the screw 6 through the bearing seat 8, making the movement process more stable and reducing friction. As the sealing pressure plate 9 moves, the sealing ring 17 on its surface comes into close contact with the inner wall of the sealing plug 4, achieving a preliminary sealing effect. During the leftward movement of the sealing pressure plate 9, air is pushed into the flexible sealing ring 10 through the connecting pipe 12, making the flexible sealing ring 10 fit tightly against the inner wall of pipe 1, further enhancing the sealing effect. The corrosion-resistant composite layer coated on the surface of the flexible sealing ring 10 and the sealing plug 4 can effectively resist the erosion of corrosive media and ensure the long-term stable operation of the sealing structure. The cover plate 3 is firmly connected to the flange 2 through the limiting structure. The connecting column 13 acts as a bridge, connecting the cover plate 3 and the flange 2. Precise positioning is achieved through the internal positioning pin 14. The bottom of the positioning pin 14 passes through the connecting column 13 and contacts and engages with the left side of the flange 2, increasing the stability and reliability of the connection. When the sealing effect needs to be adjusted, the user only needs to manually rotate the handle 16, which will push the sealing pressure plate 9 to move through the screw 6, thereby adjusting the tightness between the sealing pressure plate 9 and the inner wall of the sealing plug 4. This makes the adjustment of the sealing effect simple and quick, improving the overall sealing effect and safety.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model 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 basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A corrosion resistant pipe nozzle seal assembly for chemical process industry comprising of a pipe (1) characterised in that: The right side of the pipeline (1) surface is fixedly connected with flange plate (2), the right side of flange plate (2) is provided with cover plate (3), the inside of cover plate (3) is threadedly connected with screw adjusting structure; The left side of the screw adjusting structure is provided with a sealing plug (4), the surface of the sealing plug (4) is in close contact with the inner wall of the pipeline (1), and the left side of the sealing plug (4) is fixedly connected with a flexible sealing structure for secondary sealing of the pipeline (1); The left side of the cover plate (3) is fixedly connected with a limiting structure for limiting the cover plate (3), the limiting structure penetrates the flange plate (2) and extends to the left side of the flange plate (2), the limiting structure is three in number and is uniformly distributed, and the surface of the flange plate (2) is provided with six through holes (5) matched with the limiting structure.

2. A corrosion resistant pipe mouth sealing assembly for chemical production according to claim 1, characterized in that: The screw adjusting structure comprises a screw rod (6), the surface of the screw rod (6) is threadedly connected with a screw sleeve (7), the surface of the screw sleeve (7) is fixedly connected with the inside of the cover plate (3), the left side of the screw rod (6) penetrates the sealing plug (4) and extends to the inside of the sealing plug (4), the left side of the surface of the screw rod (6) is provided with a bearing seat (8), the left side of the bearing seat (8) is fixedly connected with a sealing pressing plate (9), and the surface of the sealing pressing plate (9) is in close contact with the inner wall of the sealing plug (4).

3. A corrosion resistant pipe nozzle seal assembly for chemical process plants as claimed in claim 2, wherein: The flexible sealing structure comprises a flexible sealing ring (10), the inner ring of the flexible sealing ring (10) is provided with a limiting ring (11), the right side of the limiting ring (11) is fixedly connected with the left side of the sealing plug (4), the right side of the flexible sealing ring (10) is fixedly connected with a communication pipe (12) for circulating air driven by the sealing pressing plate (9), and the right side of the communication pipe (12) penetrates the flexible sealing ring (10) and extends to the inside of the sealing plug (4).

4. The corrosion resistant pipe nozzle seal assembly for chemical process industries as claimed in claim 1 wherein: The limiting structure comprises a connecting column (13), the right side of the connecting column (13) is fixedly connected with the left side of the cover plate (3), the left side of the connecting column (13) penetrates the through hole (5) and extends to the left side of the flange plate (2), the inside of the connecting column (13) is provided with a positioning pin (14), the bottom of the positioning pin (14) penetrates the connecting column (13) and extends to the bottom of the connecting column (13), the right side of the positioning pin (14) is in contact with the left side of the flange plate (2), the cross section of one side of the positioning pin (14) in the connecting column (13) is greater than the cross section of the outside of the connecting column (13), and the inside of the connecting column (13) is provided with a moving groove (15) for the movement of the positioning pin (14).

5. The corrosion resistant pipe nozzle seal assembly for chemical process industries as claimed in claim 2 wherein: The right side of the screw rod (6) is fixedly connected with a handle (16) for rotating the screw rod (6), the surface of the sealing pressing plate (9) is provided with a sealing ring (17), the surface of the sealing ring (17) is in sealing contact with the inner wall of the sealing plug (4), and the number of the sealing ring (17) is two and is symmetrically distributed.

6. The corrosion resistant pipe nozzle seal assembly for chemical process industries as claimed in claim 3 wherein: The right side of the communication pipe (12) is convex, used for stable connection with the sealing plug (4), the inner ring of the limiting ring (11) is fixedly connected with reinforcing blocks (18), the right side of the reinforcing block (18) is fixedly connected with the left side of the sealing plug (4), the number of the reinforcing blocks (18) is several, and they are uniformly distributed.

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