Gas dredging device for chemical safety

Abstract

The utility model discloses a kind of gas dredging devices for chemical safety, belong to chemical pipeline dredging technical field.The device includes sealing assembly and cleaning component, the sealing assembly is located at chemical pipeline entrance, is formed by annular hollow rubber sealing mould, support plate, breather pipe and air pump, sealing mould is adhered to form sealing environment with pipeline inner wall by inflation;The cleaning component includes hollow air bag and surface evenly distributed cleaning down, air bag is contacted with pipeline inner wall after inflation expansion by one-way valve B, utilize the pressure difference generated by air pump to drive it to move in pipeline, complete inner wall cleaning by cleaning down and cleaning agent.The utility model does not need personnel to enter pipeline, realizes efficient, safe pipeline dredging by inflation sealing and air pressure driving, solve the problem that personnel safety risk is high in traditional method, efficiency is low, easy to damage pipeline.

Description

Technical Field

[0001] This utility model belongs to the field of chemical pipeline dredging technology, specifically relating to a gas dredging device for chemical safety. Background Technology

[0002] In chemical production processes, pipelines are crucial channels for transporting various chemical substances. Over long-term use, these pipelines are prone to blockage by contaminants, disrupting normal production. Traditional unclogging methods often require personnel to enter the pipelines for cleaning, which is not only inefficient but also poses safety hazards, potentially leading to chemical poisoning. Toxic, harmful, flammable, and explosive chemicals often remain inside pipelines. When personnel enter the pipelines for cleaning, they may suffer serious injury or even death due to direct contact with these hazardous substances. Furthermore, the confined and poorly ventilated environment inside pipelines further increases the risk of poisoning or suffocation for workers.

[0003] Chinese Patent CN214211587U discloses a gas dredging pipe for chemical safety, comprising an inlet punch, a first gas pipe, a second gas pipe, a gas bag, a three-way ball valve, and a gas pump. The inlet punch is tubular, with a circular gas bag fixedly connected to the outer wall of its right end. The right end of the inlet punch is connected to and fixed to the left end of the first gas pipe. The left end of the second gas pipe is connected to the gas bag and fixed to the right end of the inlet punch. The three-way ball valve has an inlet, an outlet one, and an outlet two. The right end of the first gas pipe is connected to outlet one, and the right end of the second gas pipe is connected to outlet two. The inlet is connected to the outlet of the gas pump. This method relies on airflow to dredge the pipe using the pressure of the inlet punch and the gas bag, lacking physical wiping or chemical cleaning design, and has limited cleaning ability for stubborn contaminants. Therefore, it is urgent for those skilled in the art to solve the above-mentioned technical problems. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies that rely on airflow to unclog pipes using air pressure entering the punch and air bag. These technologies lack physical wiping or chemical cleaning designs, have limited ability to clean stubborn contaminants, and require time-consuming and labor-intensive manual pipe cleaning.

[0005] The technical solution adopted by this utility model is:

[0006] A gas venting device for chemical safety includes a sealing component and a cleaning component. The sealing component is located at the inlet of a chemical pipeline, and the cleaning component is located inside the chemical pipeline.

[0007] The sealing assembly includes a sealing tire, a support plate, a vent pipe, an inflation port, a connecting pipe, and an air pump. The sealing tire is an annular hollow rubber structure, with its outer wall attached to the inner wall of the chemical pipeline. The support plate is a hollow plate structure and is fixedly connected to the sealing tire. The vent pipe passes through the support plate and is connected to the inside of the chemical pipeline. The inflation port is located on the outer wall of the sealing tire and is connected to the air pump through the connecting pipe.

[0008] The cleaning component includes an airbag and cleaning fibers. The airbag has a hollow spherical structure with the cleaning fibers evenly distributed on its outer side wall. The airbag is connected to an external air source through a one-way valve B.

[0009] By adopting the above technical solution, the sealing component seals the pipe inlet. An annular hollow rubber sealing tire, after being inflated, adheres to the inner wall of pipes of different diameters. Combined with the fixed connection of the hollow support plate, rigidity is enhanced and pressure is evenly distributed, preventing leakage. The vent pipe extends along the pipe axis and inserts into the interior, ensuring that the pressure difference generated by the air pump directly drives the movement of the cleaning component, reducing the risk of manual intervention. After the cleaning component's airbag is inflated, it makes full contact with the inner wall of the pipe. The evenly distributed cotton cleaning fibers on the surface expand the contact area through physical wiping, and the detergent adhesion area between adjacent fibers directly decomposes contaminants, achieving physical-chemical dual cleaning, suitable for stubborn stains. One-way valve A restricts gas flow only from the air pump to the sealing tire, preventing pressure leakage; one-way valve B ensures that gas enters the airbag in one direction and maintains its inflated state, ensuring continuous cleaning; welding or integral molding of the support plate and sealing tire further enhances sealing reliability. The device has no complex valve system, a simple and reliable structure, reduces maintenance costs, and systematically solves the problems of high personnel safety risks, low cleaning efficiency, unstable sealing, and pipe damage in traditional methods. It is suitable for safe and efficient dredging of high-risk pipelines in industries such as chemical and petroleum.

[0010] Furthermore, the sealing tire and the support plate are fixedly connected by welding or integral molding, and the hollow cavity of the support plate is in communication with the interior of the sealing tire.

[0011] By adopting the above technical solution, the sealing tire and the support plate are fixedly connected by welding or integral molding, ensuring that there is no gap between the two, preventing gas leakage during inflation and enhancing structural rigidity, thus avoiding deformation or displacement of the sealing tire under pressure. At the same time, the hollow cavity of the support plate is connected to the inside of the sealing tire, so that the gas is quickly and evenly distributed when it is filled, avoiding excessive local pressure, improving the adhesion stability between the sealing tire and the inner wall of the pipe, thereby strengthening the structural reliability and sealing efficiency of the sealing component, and solving the problems of easy leakage and poor pressure resistance of the sealing structure in traditional technology.

[0012] Furthermore, the vent pipe extends through one side of the support plate, the extension direction of the vent pipe is parallel to the axis of the chemical pipeline, and the end of the vent pipe is connected to the interior of the chemical pipeline.

[0013] By adopting the above technical solution, the air vent pipe runs through one side of the support plate and extends parallel to the axis of the chemical pipeline, ensuring that the pressure difference generated by the air pump is directly transmitted to the cleaning component along the pipeline axis, driving its stable movement and avoiding jamming caused by airflow deviation. The design of the end of the air vent pipe connecting to the inside of the pipeline further optimizes the air pressure transmission path, reduces energy loss, and improves driving efficiency, thereby improving the smoothness and reliability of the overall cleaning process and solving the problems of dispersed air pressure driving direction and unstable movement of the cleaning component in traditional technologies.

[0014] Furthermore, the connecting pipe is connected to the inflation port via a one-way valve A, which restricts the backflow of gas from the sealed tire towards the air pump.

[0015] By adopting the above technical solution, a one-way valve A is installed between the connecting pipe and the inflation port to restrict gas flow only from the air pump to the sealing tire, preventing backflow and ensuring that the sealing tire maintains a stable internal pressure after inflation, thus avoiding seal failure due to pressure fluctuations. This design directly ensures the airtightness and durability of the sealing component, reduces the frequency of repeated inflation due to gas leaks, maintains a stable pressure differential environment during cleaning, improves the mobility and continuity of the cleaning component, and solves the problems of unstable sealing and high maintenance costs caused by gas backflow in traditional technologies.

[0016] Furthermore, the cleaning fibers are cotton strips that are evenly fixed to the outer wall surface of the airbag, and a cleaning agent is applied between adjacent cleaning fibers.

[0017] By adopting the above technical solution, through the design of the cotton strip structure of the cleaning fibers and the cleaning agent adhesion area, the cotton fibers are soft and have strong adhesion, and are evenly fixed on the surface of the airbag, increasing the contact area with the inner wall of the pipe, and removing loose contaminants through physical wiping; the cleaning agent adhesion area between adjacent fibers directly acts on stubborn stains, and enhances the cleaning effect through chemical decomposition, without the need for additional operation steps. The soft cotton material avoids scratching or corroding the inner wall of the pipe with hard tools, extending the service life of the pipe. The cleaning agent is pre-adhered to the gaps between the fibers and is naturally released with the movement of the airbag, avoiding local over-exposure or waste, and ensuring efficient use of the cleaning agent.

[0018] Furthermore, the one-way valve B is installed at the through hole of the airbag to control the one-way entry of gas into the airbag and maintain the airbag's inflated state.

[0019] By adopting the above technical solution, a one-way valve B is installed at the through-hole of the airbag. The one-way valve B restricts gas to enter the airbag in only one direction, preventing gas backflow or accidental depressurization. This ensures that the airbag is always inflated and tightly fitted to the inner wall of the pipe, guaranteeing continuous and effective wiping of the pipe by the cleaning fibers. By controlling the unidirectional flow of gas, the airbag is prevented from contracting or shifting due to air pressure fluctuations during the cleaning process. This ensures stable movement of the cleaning components along the pipe, reducing the risk of jamming. The one-way valve B is directly integrated at the through-hole of the airbag, eliminating the need for an additional complex valve system, reducing the complexity of the device, and reducing the risk of failure due to the connection of multiple components, thus improving reliability.

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. This utility model, through the fixed connection and inflatable fit design of the sealing component's sealing tire and support plate, seals the pipe inlet to form a sealed environment. Combined with the air pipe extending along the pipe axis to transmit pressure difference, it drives the cleaning component to move automatically. No personnel need to enter the pipe throughout the process, which solves the problem of high personnel safety risks in traditional methods.

[0022] 2. This utility model achieves dual physical and chemical cleaning by inflating the airbag of the cleaning component to fit against the inner wall of the pipe, combined with the physical wiping of the cotton cleaning fibers evenly distributed on the surface, and the chemical decomposition effect of the cleaning agent between adjacent fibers, thus efficiently removing stubborn pollutants and solving the problem of low efficiency in the prior art that relies on airflow flushing or manual cleaning.

[0023] 3. This utility model restricts gas flow from the air pump to the sealing tire only by using a one-way valve A. Combined with the welding or integral molding of the support plate and the sealing tire and the hollow cavity communication design, it ensures that the pressure is evenly distributed after the sealing tire is inflated and maintains a stable sealing state. This solves the problems of easy leakage and poor pressure resistance of the sealing structure in traditional technology.

[0024] 4. This utility model controls the unidirectional flow of gas by directly integrating a one-way valve B into the air bladder through-hole, maintaining the air bladder's inflated state. Combined with the overall structural design without a complex valve system, it reduces the risk of component failure, lowers maintenance costs, and solves the problems of complex structure and frequent maintenance in existing equipment. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the sealing tire, support plate and vent pipe in this utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the airbag and cleaning fibers in this utility model.

[0029] Among them, 1-chemical pipeline;

[0030] 2-Sealing assembly; 21-Sealing tire; 22-Ventilation pipe; 23-Inflation port; 24-Connecting pipe; 25-Air pump; 26-One-way valve A; 27-Support plate;

[0031] 3-Cleaning component; 31-Airbag; 32-Cleaning lint; 33-One-way valve B. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0033] The following description, in conjunction with the accompanying drawings, describes a chemical safety gas evacuation device according to an embodiment of the present invention.

[0034] like Figure 1 , Figure 2 and Figure 3As shown in the embodiment of this utility model, the gas unblocking device for chemical safety includes a sealing component 2 located at the inlet of the chemical pipeline 1 to seal the inlet and create a sealed environment. A cleaning component 3 is located inside the chemical pipeline 1 and moves along the pipeline under air pressure to clean the inner wall. The sealing tire 21 is an annular hollow rubber structure with its outer wall fitting against the inner wall of the chemical pipeline 1. The sealing tire 21 is tightly attached to the inner wall at the pipeline inlet and expands after inflation to form a seal. The support plate 27 is a hollow plate structure, fixedly connected to the sealing tire 21 by welding or integral molding. The hollow cavity is connected to the interior of the sealed tire 21, and the auxiliary gas is evenly distributed. The vent pipe 22 passes through one side of the support plate 27, and its extension direction is parallel to the axis of the chemical pipeline 1. The end of the vent pipe 22 is inserted into the interior of the chemical pipeline 1 and is connected to the inner cavity of the chemical pipeline. It is used to transmit the pressure difference generated by the air pump 25. The inflation port 23 is located on the outer wall of the sealed tire 21 and is connected to the air pump 25 through the connecting pipe 24. A one-way valve A26 is provided between the connecting pipe 24 and the inflation port 23. The one-way valve A26 restricts the gas to flow only from the air pump 25 to the sealed tire 21 to prevent gas backflow. 1 is a hollow spherical structure. After inflation, its outer wall fits against the inner wall of the chemical pipeline 1. A one-way valve B33 is installed at the through hole of the airbag 31, with the air intake direction facing the inside of the airbag, restricting gas to enter only in one direction. The cleaning fibers 32 are cotton strips, evenly fixed on the outer wall surface of the airbag 31. There is a cleaning agent adhesion area between adjacent cleaning fibers 32 for chemical decomposition of pollutants. The air pump 25 inflates the sealing tire 21 through the connecting pipe 24 and the one-way valve A26. After the sealing tire expands, it fits against the inner wall of the pipeline. The support plate 27 enhances its rigidity. The end of the vent pipe 22 is inserted The pressure difference generated by the air pump 25 is transmitted inside the pipeline and acts on the cleaning component 3 through the vent pipe 22, pushing the airbag 31 to move along the pipeline. After the airbag is inflated, it is maintained in an expanded state by the one-way valve B33. The surface cleaning bristles 32 wipe the inner wall of the pipeline, and the cleaning agent directly decomposes stubborn stains. The sealing component 2 seals the pipeline inlet, and the vent pipe 22 extends along the pipeline axis and is inserted into the interior to ensure that the pressure difference directly drives the cleaning component 3 and avoids airflow deviation. The airbag 31 is located inside the pipeline and, after inflation, fits against the inner wall. The cleaning bristles 32 cover the surface and work with the cleaning agent to achieve efficient cleaning. The one-way valves A26 and B33 respectively ensure the air pressure stability of the sealing tire 21 and the airbag 31, and the fixed connection between the support plate 27 and the sealing tire 21 prevents deformation during inflation.

[0035] In one embodiment, the sealing assembly 2 is first placed at the pipe inlet. The air pump 25 is started to inflate the annular hollow rubber sealing tire 21 through the connecting pipe 24 and the one-way valve A26, causing it to expand and adhere to the inner wall of the pipe to form a sealed environment. The hollow cavity of the support plate 27 assists in the uniform distribution of gas to enhance the sealing stability. Subsequently, the air bladder 31 of the cleaning assembly 3 is coated with cleaning agent and placed into the pipe. It is inflated by the one-way valve B33 to expand into a spherical structure. The cotton cleaning fibers 32 evenly distributed on the outer wall contact the inner wall of the pipe, and the cleaning fibers between adjacent fibers... The cleaning agent acts directly on the contaminants; the air pump transmits pressure differential along the pipeline axis through the air pipe 22, driving the airbag to move along the pipeline. The cleaning bristles remove loose stains through physical wiping, while the cleaning agent chemically decomposes stubborn residues, achieving dual cleaning; one-way valves A / B maintain stable air pressure in the sealing tire 21 and the airbag 31 respectively, the rigid connection between the support plate 27 and the sealing tire prevents leakage, the airbag's spherical structure adapts to the bending pipeline, and the flexible cleaning bristles 32 avoid damaging the inner wall; after cleaning, the air pump 25 is turned off to release gas, and the device is disassembled, recycled, and cleaned and maintained. This device requires no personnel to enter the chemical pipeline 1 throughout the entire process. Through air-filled sealing, pressure differential drive, and synergistic physical and chemical cleaning, it solves the problems of high safety risks, low cleaning efficiency, and complex operation in traditional technologies. It is adaptable to different pipe diameters and complex pipeline structures, achieving efficient and automated cleaning.

[0036] In one embodiment, in the sealing assembly 2, the annular hollow rubber sealing tire 21 expands after inflation and fits tightly against the inner wall of the pipe 1, achieving initial fixation through friction. Its flexibility can adapt to different pipe diameters. The support plate 27 is rigidly connected to the sealing tire by welding or integral molding. The hollow cavity is connected to the inside of the sealing tire, and the auxiliary gas is evenly distributed to avoid local deformation. The vent pipe 22 passes through the support plate and extends along the pipe axis into the interior, enhancing axial fixation through physical positioning and airflow direction restriction. The airbag 31 of the cleaning assembly 3 inflates into a spherical structure. The outer wall is fixed by friction with the inner wall of the pipe. The one-way valve B33 maintains the airbag pressure to prevent depressurization and displacement. The cotton cleaning fibers 32 are evenly distributed on the surface of the airbag. The flexible material deforms when in contact with the pipe, increasing the friction area and assisting in stable movement. In the auxiliary design, the one-way valve A26 restricts the unidirectional flow of gas to ensure continuous inflation of the sealing tire. The air pump 25 drives the cleaning assembly to move in a directional manner through the axial pressure difference generated by the vent pipe 22. The spherical structure of the airbag adapts to pipe bending to avoid jamming. The device achieves stable sealing and positioning without additional clamps through air-filled bonding, rigid connection, and coordinated airflow control, making it suitable for the automated cleaning needs of complex pipelines in industries such as chemical and petroleum.

[0037] In one embodiment, the air pressure difference generated by the air pump 25 drives the cleaning assembly 3 to achieve automated pipe cleaning: the annular hollow rubber sealing tire 21 of the sealing assembly 2 inflates and fits tightly against the inner wall of the pipe 1. Combined with the rigid connection of the support plate 27 and the design of the vent pipe 22 extending along the pipe axis and inserted into the interior, a closed sealing environment is constructed and the pressure difference is transmitted. The air pump injects gas into the pipe through the vent pipe, forming an axial pressure difference between the sealing inlet and the airbag 31, which pushes the inflated spherical airbag to move at a constant speed along the pipe. The cotton cleaning fibers 32 evenly distributed on its outer wall remove loose contaminants through physical friction, while the cleaning agent attached between adjacent fibers chemically decomposes stubborn stains, achieving physical-chemical dual cleaning. The one-way valve A26 restricts the gas flow to the sealing tire only to maintain sealing stability; the one-way valve B33 ensures that the airbag continues to expand and fit against the inner wall of the pipe, and the adaptive bending section avoids jamming; the rubber sealing tire and the airbag are adapted to different pipe diameters, and the flexible cleaning fibers avoid scratching the inner wall. This device, through the synergistic effect of differential pressure drive, rigid sealing and flexible cleaning components, can clean long-distance high-risk pipelines without human intervention. It solves the problems of traditional technologies that rely on manual operation, have low cleaning efficiency and high safety risks. It combines automation, high efficiency, stability and environmental protection, and is suitable for the safe and efficient cleaning needs of complex pipelines in industries such as chemical and petroleum.

[0038] Working Principle: Automated and efficient pipeline cleaning is achieved through air pressure differential drive and physical-chemical synergy. The annular hollow rubber sealing tire 21 of the sealing component 2 expands and fits tightly against the inner wall of the pipeline inlet 1. Combined with a welded or integrally formed support plate 27, rigidity is enhanced. Gas is evenly distributed within its hollow cavity. A vent pipe 22 extends along the pipeline axis and is inserted inside to transmit the pressure differential. An air pump 25 continuously injects air into the sealing cavity through the vent pipe, creating an axial pressure differential that drives the airbag 31 of the cleaning component 3 to move uniformly along the pipeline. The airbag expands into a spherical structure through a one-way valve B33, with its outer wall fitting against the inner wall of the chemical pipeline 1. The evenly distributed cotton cleaning fibers 32 on its surface remove loose fibers through friction. The cleaning agent adhering between adjacent fibers chemically decomposes stubborn stains; the one-way valve A26 restricts the unidirectional flow of gas into the sealing element 21, maintaining sealing stability; the rubber sealing element 21 and airbag 31 adapt to different pipe diameters and bends in the chemical pipeline 1; the flexible cleaning fibers 32 prevent scratches on the inner wall of the chemical pipeline 1; in actual operation, the operator will reasonably control the inflation volume of the air pump 25 according to the actual condition of the pipeline and the cleaning needs, ensuring the sealing effect between the sealing element 21 and the inner wall of the pipeline, while avoiding displacement of the sealing component 2 due to excessive pressure caused by over-inflation. If abnormal movement of the sealing component 2 is found during the cleaning process, the operator can adjust the inflation volume of the air pump 25 in time or take other corresponding measures to correct it, so as to ensure the safety and smooth progress of the entire cleaning process.

[0039] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A gas venting device for chemical safety, characterized in that, It includes a sealing component (2) and a cleaning component (3), wherein the sealing component (2) is disposed at the inlet of the chemical pipeline (1) and the cleaning component (3) is located inside the chemical pipeline (1); The sealing assembly (2) includes a sealing tire (21), a support plate (27), a vent pipe (22), an inflation port (23), a connecting pipe (24), and an air pump (25). The sealing tire (21) is an annular hollow rubber structure, and its outer side wall is attached to the inner wall of the chemical pipeline (1). The support plate (27) is a hollow plate structure and is fixedly connected to the sealing tire (21). The vent pipe (22) passes through the support plate (27) and is connected to the inside of the chemical pipeline (1). The inflation port (23) is located on the outer side wall of the sealing tire (21) and is connected to the air pump (25) through the connecting pipe (24). The cleaning component (3) includes an airbag (31) and cleaning fibers (32). The airbag (31) has a hollow spherical structure, and the cleaning fibers (32) are evenly distributed on its outer side wall. The airbag (31) is connected to an external air source through a one-way valve B (33).

2. The chemical safety gas venting device according to claim 1, characterized in that, The sealing tire (21) and the support plate (27) are fixedly connected by welding or integral molding, and the hollow cavity of the support plate (27) is connected to the interior of the sealing tire (21).

3. The chemical safety gas venting device according to claim 1, characterized in that, The vent pipe (22) penetrates one side of the support plate (27), the extension direction of the vent pipe (22) is parallel to the axis of the chemical pipeline (1), and the end is connected to the interior of the chemical pipeline (1).

4. The chemical safety gas venting device according to claim 1, characterized in that, The connecting pipe (24) is connected to the air inlet (23) via a one-way valve A (26), which restricts the gas from flowing back from the sealed tire (21) to the air pump (25).

5. The chemical safety gas venting device according to claim 1, characterized in that, The cleaning fibers (32) are cotton strips that are evenly fixed to the outer wall surface of the airbag (31), and cleaning agent is applied between adjacent cleaning fibers (32).

6. The chemical safety gas venting device according to claim 1, characterized in that, The one-way valve B (33) is installed at the through hole of the airbag (31) to control the one-way entry of gas into the airbag (31) and maintain the inflation state of the airbag (31).

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