Volatile gas collection and harmless treatment device

Abstract

The utility model discloses a volatile gas collection and harmless treatment device, and relates to the technical field of waste gas treatment. Comprising an exhaust pipe, a gas collecting hood is arranged at the bottom of the exhaust pipe, a sleeve is arranged in the exhaust pipe, a plate body is arranged in the sleeve, a communicating opening is formed in the bottom of the sleeve, a sealing mechanism is arranged on the sleeve, the sealing mechanism comprises a gas storage cylinder body fixed in the sleeve and a hollow sealing strip fixed on the surface of the sleeve, and a communicating pipeline is arranged between the gas storage cylinder body and the hollow sealing strip. A reset spring is arranged in the air storage cylinder, a piston is movably installed in the air storage cylinder, an adjusting screw rod is arranged on one side of the piston, a limiting mechanism is arranged between the exhaust pipe and the casing pipe and comprises a movable shaft fixed to the exhaust pipe, and a threaded sleeve is movably installed on the movable shaft. According to the volatile gas collection and harmless treatment device, the hollow sealing strip can be contracted, the resistance between the sleeve and the exhaust pipe is reduced, and a user can conveniently draw the sleeve out of the exhaust pipe to replace activated carbon particles.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a volatile gas collection and harmless treatment device. Background Art

[0002] During the production process in industrial plants, most of the waste gas generated by reaction vessels is organic waste gas, such as volatile organic compounds, polycyclic aromatic hydrocarbons, polychlorinated biphenyls, etc. At the same time, in order to prevent the waste gas from spreading, it is best to directly install a gas collection hood above the reaction vessel so that the volatile organic waste gas can be well collected directly.

[0003] Publication No. CN221156005U discloses an adsorption collector for volatile gases, which includes a gas collection hood. The gas collection hood is conical, the end side of the exhaust pipe is the open side, and a sleeve is installed in a sleeved manner. The sleeve is provided with ventilation holes at the position corresponding to the narrow side of the gas collection hood. The end of the sleeve is sealed by a sealing cover. The sleeve is provided with multiple groups of activated carbon adsorption layers. A single group of activated carbon adsorption layers includes a plate body with an internal cavity. The side wall of the plate body is grid-shaped, and the internal cavity is filled with activated carbon particles.

[0004] The above device uses the gas collection hood to absorb waste gas. The absorbed waste gas will pass through the activated carbon particles, thereby treating the waste gas. And the sleeve can be pulled out of the exhaust pipe, which is convenient for users to replace the activated carbon particles in the plate body. However, the sleeve and the exhaust pipe are sealed by a sealing rubber strip, and the sealing rubber strip is clamped between the sleeve and the exhaust pipe, making it difficult to pull out the sleeve, and it takes a lot of effort to replace the activated carbon particles. Content of the Utility Model

[0005] The main purpose of the utility model is to provide a volatile gas collection and harmless treatment device, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A volatile gas collection and harmless treatment device includes an exhaust pipe. A gas collection hood is provided at the bottom of the exhaust pipe. A sleeve is provided in the exhaust pipe. A plate body is provided in the sleeve. A communication port is opened at the bottom of the sleeve. A sealing mechanism is provided on the sleeve. The sealing mechanism includes a storage cylinder body fixed in the sleeve and a hollow sealing strip fixed on the surface of the sleeve. A communication pipe is provided between the storage cylinder body and the hollow sealing strip. A return spring is provided in the storage cylinder body. A piston is movably installed in the storage cylinder body. An adjusting screw rod is provided on one side of the piston. A limiting mechanism is provided between the exhaust pipe and the sleeve. The limiting mechanism includes a movable shaft fixed on the exhaust pipe. A threaded sleeve is movably installed on the movable shaft. A threaded pull rod is installed in the threaded sleeve in a threaded manner. A connecting shaft pin is fixedly installed at the end of the threaded pull rod, and the connecting shaft pin can be connected to the sleeve.

[0008] Furthermore, the sealing mechanism further includes a nut seat fixed to one end of the sleeve, and the adjusting screw is threadedly connected to the nut seat. After rotating the adjusting screw, it can move back and forth.

[0009] Furthermore, mounting grooves are formed on the surface of the sleeve, and the hollow sealing strip is mounted on the surface of the sleeve through the mounting grooves.

[0010] Furthermore, one end of the connecting pipe is communicated with the air storage cylinder body, the other end of the connecting pipe is communicated with the hollow sealing strip, one end of the return spring is connected to the piston, the other end of the return spring is connected to the end of the air storage cylinder body, a through hole is formed at one end of the air storage cylinder body, and the adjusting screw extends into the air storage cylinder body through the through hole. The return spring will provide a thrust for the piston.

[0011] Furthermore, the limiting mechanism further includes a limiting buckle fixedly installed on the side wall of the exhaust pipe. Positioning feet are provided on both the threaded sleeve and the threaded pull rod, and the threaded sleeve can be stuck in the limiting buckle.

[0012] Furthermore, a docking groove is formed on the side wall of the sleeve, and the connecting shaft pin is embedded in the sleeve through the docking groove.

[0013] Furthermore, one end of the threaded sleeve is connected to the movable shaft through the positioning foot, the connecting shaft pin is installed at the end of the threaded pull rod through the positioning foot, and the threaded sleeve is restricted at the side wall of the exhaust pipe through the limiting buckle.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. After the piston moves forward, it will press the gas in the air storage cylinder body into the hollow sealing strip, causing the hollow sealing strip to expand. The expanded hollow sealing strip will block the gap between the exhaust pipe and the sleeve, keeping the sleeve and the exhaust pipe sealed. The return spring will push the piston backward, thereby sucking the gas in the hollow sealing strip into the air storage cylinder body, causing the hollow sealing strip to contract and reducing the resistance between the sleeve and the exhaust pipe, facilitating the user to pull out the sleeve from the exhaust pipe.

[0016] 2. After unfolding the threaded sleeve, the threaded pull rod can be rotated to make it extend. After the threaded pull rod extends, the connecting shaft pin at its end can be inserted into the sleeve, thereby pulling up the sleeve with the threaded pull rod, enabling the pulled-out sleeve to stay stably on one side of the exhaust pipe. At the same time, after retracting the threaded sleeve, it can be stuck in the limiting buckle to position the threaded sleeve on both sides of the exhaust pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 is a partial structural schematic diagram of the present utility model;

[0019] Figure 3 is a schematic diagram of the sealing mechanism of the present utility model;

[0020] Figure 4 is a schematic diagram of the limiting mechanism of the present utility model.

[0021] In the figure: 1, exhaust pipe; 2, air collecting hood; 3, sleeve; 4, plate body; 5, communication port; 6, sealing mechanism; 601, storage cylinder body; 602, nut seat; 603, adjusting screw; 604, piston; 605, return spring; 606, communication pipe; 607, hollow sealing strip; 7, limiting mechanism; 701, movable shaft; 702, limiting buckle; 703, threaded sleeve; 704, threaded pull rod; 705, positioning support foot; 706, connecting shaft pin. Specific embodiments

[0022] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] As Figure 1 Figure 2 shown, a volatile gas collection and harmless treatment device includes an exhaust pipe 1, an air collecting hood 2 is provided at the bottom of the exhaust pipe 1, a sleeve 3 is provided in the exhaust pipe 1, a plate body 4 is provided in the sleeve 3, a communication port 5 is opened at the bottom of the sleeve 3, a sealing mechanism 6 is provided on the sleeve 3, the sealing mechanism 6 includes a storage cylinder body 601 fixed in the sleeve 3 and a hollow sealing strip 607 fixed on the surface of the sleeve 3, a communication pipe 606 is provided between the storage cylinder body 601 and the hollow sealing strip 607, a return spring 605 is provided in the storage cylinder body 601, a piston 604 is movably installed in the storage cylinder body 601, an adjusting screw 603 is provided on one side of the piston 604, a limiting mechanism 7 is provided between the exhaust pipe 1 and the sleeve 3, and during use, the hollow sealing strip 607 can be contracted to reduce the resistance between the sleeve 3 and the exhaust pipe 1, facilitating the user to pull out the sleeve 3 outside the exhaust pipe 1 to replace the activated carbon particles.

[0024] As Figure 3 shown, a sealing mechanism 6 is provided on the sleeve 3, the sealing mechanism 6 includes a storage cylinder body 601 fixed in the sleeve 3 and a hollow sealing strip 607 fixed on the surface of the sleeve 3, a communication pipe 606 is provided between the storage cylinder body 601 and the hollow sealing strip 607, a return spring 605 is provided in the storage cylinder body 601, a piston 604 is movably installed in the storage cylinder body 601, an adjusting screw 603 is provided on one side of the piston 604, the sealing mechanism 6 further includes a nut seat 602 fixed at one end of the sleeve 3, and the adjusting screw 603 is threadedly connected in the nut seat 602.

[0025] Specifically, after the piston 604 moves forward, it will press the gas in the storage cylinder 601 into the hollow sealing strip 607, causing the hollow sealing strip 607 to expand. The expanded hollow sealing strip 607 will block the gap between the exhaust pipe 1 and the sleeve 3, keeping the sleeve 3 and the exhaust pipe 1 sealed. The return spring 605 will push the piston 604 to move backward, thereby sucking the gas in the hollow sealing strip 607 into the storage cylinder 601, causing the hollow sealing strip 607 to contract and reducing the resistance between the sleeve 3 and the exhaust pipe 1, facilitating the user to pull out the sleeve 3 from the exhaust pipe 1 to replace the activated carbon particles.

[0026] As Figure 4 shown, a limiting mechanism 7 is provided between the exhaust pipe 1 and the sleeve 3. The limiting mechanism 7 includes a movable shaft 701 fixed on the exhaust pipe 1. A threaded sleeve 703 is movably installed on the movable shaft 701. A threaded pull rod 704 is installed with internal threads in the threaded sleeve 703. A connecting shaft pin 706 is fixedly installed at the end of the threaded pull rod 704. The limiting mechanism 7 further includes a limiting buckle 702 fixedly installed on the side wall of the exhaust pipe 1. Positioning feet 705 are provided on both the threaded sleeve 703 and the threaded pull rod 704.

[0027] Specifically, after the threaded sleeve 703 is expanded, the threaded pull rod 704 can be rotated to make it extend. After the threaded pull rod 704 extends, the connecting shaft pin 706 at its end can be inserted into the sleeve 3, thereby using the threaded pull rod 704 to lift the sleeve 3, making the pulled-out sleeve 3 stay stably on one side of the exhaust pipe 1. At the same time, after the threaded sleeve 703 is retracted, it can be stuck in the limiting buckle 702, positioning the threaded sleeve 703 on both sides of the exhaust pipe 1.

[0028] It should be noted that the present utility model is a volatile gas collection and harmless treatment device. During actual use, first, the sleeve 3 is pushed into the exhaust pipe 1 to align the communication port 5 with the gas collection hood 2 vertically. After the communication port 5 and the gas collection hood 2 are vertically aligned, the adjusting screw rod 603 can be rotated forward to make the piston 604 move forward. After the piston 604 moves forward, it will press the gas in the gas storage cylinder body 601 into the hollow sealing strip 607, causing the hollow sealing strip 607 to expand. The expanded hollow sealing strip 607 will block the gap between the exhaust pipe 1 and the sleeve 3, keeping the sleeve 3 and the exhaust pipe 1 sealed. Then, the waste gas can be absorbed by the gas collection hood 2, and the absorbed waste gas will pass through the activated carbon particles in the plate body 4, thereby treating the waste gas. At the same time, the user can rotate the adjusting screw rod 603 backward. After rotating the adjusting screw rod 603 backward, the return spring 605 will push the piston 604 backward, thereby sucking the gas in the hollow sealing strip 607 into the gas storage cylinder body 601, causing the hollow sealing strip 607 to contract and reducing the resistance between the sleeve 3 and the exhaust pipe 1, facilitating the user to pull the sleeve 3 out of the exhaust pipe 1. After the sleeve 3 is pulled out of the exhaust pipe 1, the threaded sleeve 703 can be unfolded. After unfolding the threaded sleeve 703, the threaded pull rod 704 can be rotated to make it extend. After the threaded pull rod 704 extends, the connecting shaft pin 706 at its end can be inserted into the sleeve 3, thereby using the threaded pull rod 704 to lift the sleeve 3 and making the pulled-out sleeve 3 stay stably on one side of the exhaust pipe 1, facilitating the user to replace the activated carbon particles in the plate body 4.

[0029] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A volatile gas collection and harmless treatment device, comprising an exhaust pipe (1), a gas collecting hood (2) is provided at the bottom of the exhaust pipe (1), a sleeve (3) is provided inside the exhaust pipe (1), a plate (4) is provided inside the sleeve (3), and a communication port (5) is provided at the bottom of the sleeve (3), characterized in that: The sleeve (3) is provided with a sealing mechanism (6), the sealing mechanism (6) comprising an air storage cylinder (601) fixed in the sleeve (3) and a hollow sealing strip (607) fixed on the surface of the sleeve (3), a connecting pipe (606) is provided between the air storage cylinder (601) and the hollow sealing strip (607), a return spring (605) is provided in the air storage cylinder (601), a piston (604) is movably installed in the air storage cylinder (601), and the An adjusting screw (603) is provided on one side of the piston (604), and a limiting mechanism (7) is provided between the exhaust pipe (1) and the sleeve (3). The limiting mechanism (7) comprises a movable shaft (701) fixed on the exhaust pipe (1), a threaded sleeve (703) is movably mounted on the movable shaft (701), a threaded pull rod (704) is internally threadedly mounted on the threaded sleeve (703), and a connecting shaft pin (706) is fixedly mounted at the end of the threaded pull rod (704).

2. The volatile gas collection and harmless treatment device according to claim 1 is characterized in that: The sealing mechanism (6) further comprises a nut seat (602) fixed to one end of the sleeve (3), and an adjusting screw (603) is threadedly connected in the nut seat (602).

3. The volatile gas collection and harmless treatment device according to claim 2 is characterized in that: A mounting groove is provided on the surface of the sleeve (3), and the hollow sealing strip (607) is mounted on the surface of the sleeve (3) through the mounting groove.

4. The volatile gas collection and harmless treatment device according to claim 3 is characterized in that: One end of the communication pipe (606) is in communication with the gas storage cylinder body (601), and the other end of the communication pipe (606) is in communication with the hollow sealing strip (607). One end of the return spring (605) is connected to the piston (604), and the other end of the return spring (605) is connected to the end of the gas storage cylinder body (601). A through hole is provided at one end of the gas storage cylinder body (601), and the adjusting screw (603) extends into the gas storage cylinder body (601) through the through hole.

5. The volatile gas collection and harmless treatment device according to claim 4 is characterized in that: The limiting mechanism (7) further comprises a limiting buckle (702) fixedly mounted on the side wall of the exhaust pipe (1), and positioning legs (705) are provided on both the threaded sleeve (703) and the threaded pull rod (704).

6. The volatile gas collection and harmless treatment device according to claim 5 is characterized in that: A docking groove is provided on the side wall of the sleeve (3), and the connecting shaft pin (706) is embedded in the sleeve (3) through the docking groove.

7. The volatile gas collection and harmless treatment device according to claim 6 is characterized in that: One end of the threaded sleeve (703) is connected to the movable shaft (701) via a positioning foot (705), the connecting shaft pin (706) is installed on the end of the threaded pull rod (704) via the positioning foot (705), and the threaded sleeve (703) is restricted at the side wall of the exhaust pipe (1) via a limiting buckle (702).

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