A confined space temporary storage harmful gas purification device

Abstract

The utility model discloses a kind of harmful gas purification devices temporarily stored in restricted space, it is related to harmful gas purification technical field, including jar body, the jar body top is provided with sealing ring, the sealing ring top is fixedly installed with isolator, the isolator top inner wall is rotatably installed with winding wheel, two gas pipes are wound in the outer wall of winding wheel, the isolator outer wall is fixedly installed with glove, spraying component, the spraying component is installed on purification tank, and it is used to spray harmful gas in purification tank and carry out spray purification absorption.The utility model, by sealing ring is pressed in the top of jar body, and flange mouth is completely covered with isolator, then the bottom of flange mouth edge is held by controlling locking assembly, under the action of reaction force, so that sealing ring and the surface of jar body are closely combined, to improve the sealing property of isolator and the connecting place of jar body, so that in the process of harmful gas is extracted and purified, avoid the problem that harmful gas is dispersed to the outside.

Description

Technical Field

[0001] This utility model relates to the field of harmful gas purification technology, and in particular to a confined space temporary harmful gas purification device. Background Technology

[0002] We have recently received urgent feedback from several chemical companies that they are experiencing frequent releases of harmful gases during tank cleaning operations. This has become a major safety hazard in the chemical and pharmaceutical industries. When sealed storage tanks containing chemical reagents are left to stand, volatile organic compounds will continuously accumulate, forming high concentrations of "confined space poison gas bombs".

[0003] For example, a benzene storage tank was temporarily shut down before cleaning due to nitrogen sealing measures, which allowed air to enter and form an explosive mixture. This mixture ignited upon contact with welding sparks, causing not only severe equipment damage but also huge production losses. This accident exposed a fatal flaw in the traditional tank cleaning process: when workers removed the flange, there was a lack of effective sealing and isolation measures, allowing high concentrations of harmful gases to escape instantly. This could lead to both an explosion and poisoning of operators. Similarly, a case of a gas water heater user suffering carbon monoxide poisoning due to a failed flue seal also serves as a warning of the serious consequences of harmful gas leaks. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a confined space temporary storage and purification device for harmful gases. It solves the problem that when sealed storage tanks storing chemical reagents are left to stand, volatile organic compounds will continuously accumulate, forming a high concentration of "confined space toxic gas bombs." When workers remove the flange, there is a lack of effective sealing and isolation measures, and the high concentration of harmful gases will instantly escape, which can easily affect the safety of workers.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A confined space temporary storage and purification device for harmful gases includes a tank, a sealing ring is provided on the top of the tank, an isolation cover is fixedly installed on the top of the sealing ring, a winding wheel is rotatably installed on the inner wall of the top of the isolation cover, two gas tubes are wound around the outer wall of the winding wheel, and a glove is fixedly installed on the outer wall of the isolation cover.

[0007] A spray assembly, which is installed on the purification tank and is used to spray, purify, and absorb harmful gases inside the purification tank.

[0008] A locking assembly, which is mounted on the isolation cover and is used to lock the isolation cover and the sealing ring to the tank body.

[0009] Preferably, the spray assembly includes:

[0010] A liquid pump is fixedly installed on the top of the purification tank. The input end of the liquid pump is connected to the inner bottom of the purification tank. An atomizing nozzle is fixedly installed on the inner wall of the top of the purification tank. The atomizing nozzle is connected to the output end of the liquid pump through a pipe.

[0011] Preferably, the locking assembly includes:

[0012] Two pull rods are provided, both of which pass through and are movably connected to the isolation cover. A connecting rod is movably installed between the upper ends of the two pull rods. A threaded rod is threaded through the middle of the connecting rod and is rotatably connected to the isolation cover.

[0013] Preferably, one end of one of the air tubes passes through the isolation cover and is fixedly connected to the output end of the air pump, and the portion of the air tube passing through the isolation cover is fixedly connected to the isolation cover.

[0014] Preferably, one end of the other of the air tubes passes through the isolation cover and is fixedly connected to the input end of the vacuum pump.

[0015] Preferably, a flange is fixedly installed on the top of the tank, and the two tie rods are located at the edges on both sides of the flange.

[0016] Preferably, a connecting pipe is installed through and fixedly installed at the bottom of the purification tank, and the other end of the connecting pipe is fixed to the output end of the vacuum pump.

[0017] Preferably, an exhaust pipe is installed through and fixedly mounted on the top of the purification tank.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. By pressing the sealing ring onto the top of the tank and completely covering the flange with an isolation cover, and then using the locking assembly to support the bottom edge of the flange, the sealing ring is tightly fitted to the surface of the tank under the action of the reaction force. This improves the sealing performance at the connection between the isolation cover and the tank, preventing harmful gases from escaping to the outside environment during the extraction and purification process. After putting on gloves, you can then loosen the bolts on the flange to open it. This ensures that when the flange is opened, the harmful gases inside the tank will not escape into the external environment, thus avoiding any impact on the safety of the workers. Attached Figure Description

[0020] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

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

[0022] Figure 2 This is a cross-sectional view of the purification tank in this utility model;

[0023] Figure 3 This is a cross-sectional view of the isolation cover in this utility model;

[0024] Figure 4 This is a schematic diagram of the regional structure of the isolation cover in this utility model;

[0025] Figure 5 This is a schematic diagram of the regional structure of the winding wheel in this utility model;

[0026] Figure 6 This is a schematic diagram of the regional structure of the connecting rod in this utility model;

[0027] Figure 7 This is a schematic diagram of the pull rod in this utility model.

[0028] Legend: 1. Isolation hood; 2. Glove; 3. Sealing ring; 4. Tank body; 5. Connecting pipe; 6. Purification tank; 7. Exhaust pipe; 8. Atomizing nozzle; 9. Liquid pump; 10. Pull rod; 11. Connecting rod; 12. Threaded rod; 13. Air pump; 14. Vacuum pump; 15. Winding reel; 16. Flange; 17. Air pipe. Detailed Implementation

[0029] This application provides a confined space temporary storage and purification device for harmful gases, which effectively solves the problem that when a sealed storage tank storing chemical reagents is left to stand, volatile organic compounds will continuously accumulate, forming a high concentration of "confined space toxic gas bomb." When workers remove the flange, there is a lack of effective sealing and isolation measures, and the high concentration of harmful gases will instantly escape, which can easily affect the safety of workers.

[0030] Example

[0031] like Figure 1 - Figure 7 As shown, the technical solution in this application embodiment effectively solves the technical problem that volatile organic compounds continuously accumulate in sealed storage tanks for storing chemical reagents during the static process, forming a high-concentration "confined space toxic gas bomb." When workers remove the flange, the lack of effective sealing and isolation measures allows the high-concentration harmful gas to escape instantly, easily affecting the safety of workers. The overall idea is as follows:

[0032] To address the problems existing in the prior art, this utility model provides a confined space temporary storage and purification device for harmful gases, including a tank 4, a sealing ring 3 on the top of the tank 4, an isolation cover 1 fixedly installed on the top of the sealing ring 3, a winding wheel 15 rotatably installed on the inner wall of the top of the isolation cover 1, two air tubes 17 wound around the outer wall of the winding wheel 15, and a glove 2 fixedly installed on the outer wall of the isolation cover 1.

[0033] A spray assembly is installed on the purification tank 6 and is used to spray, purify, and absorb harmful gases inside the purification tank 6.

[0034] A locking assembly is installed on the isolation cover 1 and is used to lock the isolation cover 1 and the sealing ring 3 onto the tank body 4.

[0035] Furthermore, the spray assembly includes:

[0036] A liquid pump 9 is fixedly installed on the top of the purification tank 6. The input end of the liquid pump 9 is connected to the inner bottom of the purification tank 6. An atomizing nozzle 8 is fixedly installed on the inner wall of the top of the purification tank 6. The atomizing nozzle 8 is connected to the output end of the liquid pump 9 through a pipe.

[0037] Furthermore, the locking assembly includes:

[0038] Two pull rods 10 are connected to the isolation cover 1. A connecting rod 11 is installed between the upper ends of the two pull rods 10. A threaded rod 12 is installed through the middle of the connecting rod 11 and threadedly. The lower end of the threaded rod 12 is rotatably connected to the isolation cover 1.

[0039] Furthermore, one end of one of the air tubes 17 passes through the isolation cover 1 and is fixedly connected to the output end of the air pump 13.

[0040] Furthermore, one end of another duct 17 passes through the isolation cover 1 and is fixedly connected to the input end of the vacuum pump 14.

[0041] Furthermore, a flange 16 is fixedly installed on the top of the tank body 4, and two tie rods 10 are located at the edges on both sides of the flange 16.

[0042] Furthermore, a connecting pipe 5 is installed through and fixedly mounted on the bottom of the purification tank 6, and the other end of the connecting pipe 5 is fixed to the output end of the vacuum pump 14.

[0043] Furthermore, an exhaust pipe 7 is installed through and fixedly mounted on the top of the purification tank 6.

[0044] in:

[0045] Isolation hood 1: Made of polycarbonate to facilitate observation of the interior of isolation hood 1, and to facilitate opening flange 16 and inserting air pipe 17 into tank 4;

[0046] Glove 2: A silicone glove that communicates with the inside of the isolation shield 1. Wearing gloves 2 on the arm allows operation of the internal structure of the isolation shield 1 while ensuring the airtightness of the isolation shield 1. It is fixed to the isolation shield 1 by adhesive.

[0047] Sealing ring 3: It is a rubber ring with a rounded bottom, which fits perfectly with the outer wall of the top of the tank 4, improving the sealing performance at the connection between the isolation cover 1 and the tank 4, and is fixed to the isolation cover 1 by adhesive bonding.

[0048] Tank 4: This is a metal storage tank used to store chemical agents, and contains harmful gases.

[0049] Connecting pipe 5: is an ethylene propylene rubber hose, used to transport harmful gases into the purification tank 6, and is connected to the purification tank 6 through a polytetrafluoroethylene tube;

[0050] Purification tank 6: The tank is made of polytetrafluoroethylene. The top cover is fixed by a flange. A liquid injection port is fixedly installed on the front of the top for injecting absorbent agents into the purification tank 6 to absorb harmful gases.

[0051] Exhaust pipe 7: It is a polytetrafluoroethylene exhaust pipe, which is integrated with the lid of the purification tank 6. It has a molecular sieve mesh bag inside to absorb the moisture in the exhaust gas and prevent pollution of the external environment.

[0052] Atomizing nozzle 8: It is a polytetrafluoroethylene atomizing nozzle, which is fixed to the purification tank 6 by bolts, and the input end is connected to the output end of the liquid pump 9 through a polytetrafluoroethylene pipeline;

[0053] Liquid pump 9: It is a polytetrafluoroethylene pump. Its input end is connected to the inner bottom of the purification tank 6 through a polytetrafluoroethylene pipeline and is fixed to the purification tank 6 by a metal bracket and bolts.

[0054] Tie rod 10: The middle part is a metal rod, and metal strips are welded horizontally at both ends. The two ends are L-shaped. The lower metal strip supports the bottom of the flange 16 edge, and the upper metal strip is embedded in the groove at the top of the connecting rod 11.

[0055] Connecting rod 11: It is a metal plate with strip-shaped grooves and round holes on both sides of the top. The strip-shaped grooves can restrict the rotation of the pull rod 10. A threaded hole is provided in the middle for installing the threaded rod 12.

[0056] Threaded rod 12: It consists of a metal threaded rod and a metal wheel, which are fixed by welding. The line segment of the threaded rod 12 is rotatably connected to the isolation cover 1 through a limiting sleeve.

[0057] Air pump 13: This is a miniature air pump. Its output end is connected to one end of one of the air pipes 17 and is fixed to the isolation cover 1 by a metal bracket and bolts. It is used to deliver air into the interior of the tank 4.

[0058] Vacuum pump 14: It is a screw vacuum pump, which is fixed to the isolation cover 1 with a metal bracket and bolts. Its input end is connected to one end of another gas pipe 17, and its output end is connected to one end of the connecting pipe 5.

[0059] The winding wheel 15 is a stainless steel winding wheel, consisting of a drum and a circular tray. The drum is used to wind up the air pipe 17, and the tray is used to support the air pipe 17. The edge of the tray has a slot. When one end of the air pipe 17 is placed into the tank 4 at a specified height, the air pipe 17 can be locked in place by the slot to prevent the air pipe 17 from falling down. It is rotatably connected to the isolation cover 1 through a bearing.

[0060] Flange 16: This is a flange opening, secured by multiple bolts;

[0061] Air tube 17: a plastic flexible tube, wound around the take-up reel 15 one turn at a time.

[0062] Working principle:

[0063] First, the sealing ring 3 is pressed onto the top of the tank body 4, and the flange opening 16 is completely covered by the isolation cover 1. Then, by rotating the threaded rod 12, the connecting rod 11 is lowered. Next, the upper end of the pull rod 10 disengages from the strip groove on the connecting rod 11. Then, by adjusting up and down and rotating left and right, the metal strip at the lower end of the pull rod 10 supports the bottom edge of the flange opening 16. Then, by rotating the threaded rod 12, the connecting rod 11 is raised until the lower ends of the two pull rods 10 are tightly fitted with the bottom edge of the flange opening 16. Then, under the action of the reaction force, the sealing ring 3 is tightly fitted with the surface of the tank body 4, thereby improving the sealing performance at the connection between the isolation cover 1 and the tank body 4.

[0064] The second step is to put your hands through gloves 2, and then you can remove the bolts on flange 16 to open flange 16, ensuring that harmful gases inside tank 4 will not escape into the external environment when flange 16 is opened.

[0065] The third step involves evacuating the harmful gas inside the tank 4. If the density of the harmful gas inside the tank 4 is higher than that of air, the air pipe 17 connected to the vacuum pump 14 can be released to the bottom of the tank 4, and the air pipe 17 connected to the air pump 13 can be released to the upper port of the tank 4. Then, while starting the vacuum pump 14 to extract the harmful gas from the bottom of the tank 4, outside air is introduced from the top of the tank 4, causing the harmful gas inside the tank 4 to continue to settle until it is completely extracted. If the density of the harmful gas inside the tank 4 is lower than that of air, the air pipe 17 connected to the vacuum pump 14 can be released to the upper port of the tank 4, and the air pipe 17 connected to the air pump 13 can be released to the bottom of the tank 4. Then, the same method is used to evacuate and introduce air at the same time, thereby achieving the removal of harmful gas inside the tank 4 by air exhaust.

[0066] In the fourth step, the harmful gas extracted by the vacuum pump 14 is transported to the purification tank 6 through the connecting pipe 5. Then, it reacts with the absorbent in the purification tank 6 in the form of bubbles, thereby absorbing the harmful gas. The absorbent in the purification tank 6 is extracted by starting the liquid pump 9, and then transported to the atomizing nozzle 8 through the pipeline and sprayed out, so that it can react with the harmful gas in the purification tank 6, improving the purification effect. The purified gas is discharged through the exhaust pipe 7.

[0067] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A confined space temporary storage and purification device for harmful gases, characterized in that, include: Tank body (4), the top of the tank body (4) is provided with a sealing ring (3), the top of the sealing ring (3) is fixedly installed with an isolation cover (1), the inner wall of the top of the isolation cover (1) is rotatably installed with a winding wheel (15), the outer wall of the winding wheel (15) is wound with two air pipes (17), and the outer wall of the isolation cover (1) is fixedly installed with a glove (2). A spray assembly is installed on the purification tank (6) and is used to spray, purify and absorb harmful gases in the purification tank (6). A locking assembly is mounted on the isolation cover (1) and is used to lock the isolation cover (1) and the sealing ring (3) onto the tank body (4).

2. The confined space temporary storage and purification device for harmful gases as described in claim 1, characterized in that, The spray assembly includes: A liquid pump (9) is fixedly installed on the top of the purification tank (6). The input end of the liquid pump (9) is connected to the inner bottom of the purification tank (6). An atomizing nozzle (8) is fixedly installed on the inner wall of the top of the purification tank (6). The atomizing nozzle (8) is connected to the output end of the liquid pump (9) through a pipe.

3. The confined space temporary storage harmful gas purifying device according to claim 1, characterized in that, The locking assembly includes: Two pull rods (10) are connected to the isolation cover (1) through both of them. A connecting rod (11) is installed between the upper ends of the two pull rods (10). A threaded rod (12) is installed through the middle of the connecting rod (11) and the lower end of the threaded rod (12) is rotatably connected to the isolation cover (1).

4. The confined space temporary storage harmful gas purifying device according to claim 1, characterized in that: One end of one of the air tubes (17) passes through the isolation cover (1) and is fixedly connected to the output end of the air pump (13).

5. The confined space temporary storage harmful gas purifying device according to claim 1, characterized in that: One end of the other of the ducts (17) passes through the isolation cover (1) and is fixedly connected to the input end of the vacuum pump (14).

6. The confined space temporary storage harmful gas purifying device according to claim 3, characterized in that: The top of the tank body (4) is fixedly installed with a flange (16), and the two tie rods (10) are located at the edges on both sides of the flange (16).

7. The confined space temporary storage harmful gas purifying device according to claim 1, characterized in that: A connecting pipe (5) is installed through and fixedly installed at the bottom of the purification tank (6), and the other end of the connecting pipe (5) is fixed to the output end of the vacuum pump (14).

8. The confined space temporary storage and purification device for harmful gases as described in claim 1, characterized in that: An exhaust pipe (7) is installed through and fixedly installed on the top of the purification tank (6).

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