An ethylene oxide sterilization tail gas purification device

Abstract

This utility model discloses an ethylene oxide sterilization tail gas purification device, including a purification chamber. An inlet pipe and an outlet pipe are respectively installed through the upper and lower ends of the purification chamber. A support foot is fixedly connected to the lower surface of the purification chamber on the side of the outlet pipe. A positioning arm is movably arranged at the edge of the lower surface of the purification chamber, and a door is fixedly connected to the upper end of the positioning arm. A positioning ring is fixedly installed on the upper inner wall of the purification chamber, and a filter frame is movably arranged on the inner wall of the positioning ring. A filter screen is fixedly installed on the lower inner wall of the filter frame. An adjusting ring is sleeved on the outer wall of the inlet pipe, and a locking rod is fixedly connected to the upper surface of the purification chamber on the side of the adjusting ring. A limit mechanism is provided on the lower outer wall of the adjusting ring. This ethylene oxide sterilization tail gas purification device facilitates the replacement of the filter screen and catalyst, thereby ensuring the stability of the device and improving its practicality.

Description

Technical Field

[0001] This utility model relates to the technical field of ethylene oxide tail gas purification devices, specifically an ethylene oxide sterilization tail gas purification device. Background Technology

[0002] Ethylene oxide is a colorless gas at room temperature but with an aromatic ether odor. It is flammable and explosive and readily soluble in organic solvents such as water, ethanol, or ether. Furthermore, ethylene oxide is chemically reactive and can react with many substances. Therefore, ethylene oxide is an important chemical raw material. An ethylene oxide sterilization tail gas purification device is a device that treats the tail gas generated when ethylene oxide is used as a sterilizing agent, thus playing a role in protecting the ecological environment.

[0003] However, existing ethylene oxide sterilization exhaust gas purification devices have the following problems when in use:

[0004] When treating exhaust gas with filters and catalysts, the device needs to be easy to replace the filters and catalysts to ensure its effectiveness. However, existing ethylene oxide sterilization exhaust gas purification devices do not allow for easy replacement of filters and catalysts, which can affect the stability of the device and reduce its practicality.

[0005] To address the aforementioned issues, there is an urgent need for innovative design based on the existing ethylene oxide sterilization tail gas purification device. Utility Model Content

[0006] The purpose of this invention is to provide an ethylene oxide sterilization tail gas purification device to solve the problem mentioned in the background art that existing ethylene oxide sterilization tail gas purification devices are inconvenient to replace filters and catalysts, which easily affects the stability of the device and reduces its practicality.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an ethylene oxide sterilization tail gas purification device, comprising a purification chamber, an inlet pipe and an outlet pipe respectively installed through the upper and lower ends of the purification chamber, a support foot fixedly connected to the lower surface of the purification chamber on the side of the outlet pipe, a positioning arm movably arranged at the edge of the lower surface of the purification chamber, and a chamber door fixedly connected to the upper end of the positioning arm, while a sealing gasket is adhered to the side surface of the chamber door, a positioning ring fixedly installed on the upper inner wall of the purification chamber, a filter frame movably arranged on the inner wall of the positioning ring, a filter screen fixedly installed on the lower inner wall of the filter frame, a honeycomb catalyst movably connected to the lower inner wall of the purification chamber, and a positioning plate fixedly arranged on the inner wall of the purification chamber above the honeycomb catalyst, an adjusting ring sleeved on the outer wall of the inlet pipe, a locking rod fixedly connected to the upper surface of the purification chamber on the side of the adjusting ring, and a limit mechanism provided on the lower outer wall of the adjusting ring.

[0008] Preferably, the positioning arm and the purification box form a rotating structure, and both the purification box and the honeycomb catalyst are in contact with the sealing gasket.

[0009] Preferably, the filter frame and the positioning ring are threaded, and the filter frame and the purification box are fitted together.

[0010] Preferably, the honeycomb catalyst forms a sliding structure with the purification box and the positioning plate respectively, and the adjusting ring and the air inlet pipe are threadedly connected.

[0011] Preferably, the limiting mechanism includes a transmission ring and a retainer, wherein the transmission ring is sleeved on the lower outer wall of the adjusting ring, and a retainer is fixedly connected to the outer wall of the side of the transmission ring.

[0012] Preferably, the transmission ring and the adjusting ring are rotatably arranged, the card holder is slidably connected to the card rod and the box door respectively, and the side cross-sectional shape of the card holder is set to an "L" shape.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the ethylene oxide sterilization tail gas purification device is easy to replace the filter and catalyst, thereby ensuring the stability of the device and improving its practicality;

[0014] By rotating the adjusting ring, the transmission ring moves upward, which in turn causes the bracket to slide upward relative to the lever, disengaging the bracket from the door. The door then opens, facilitating filter and catalyst replacement. Next, the honeycomb catalyst moves, detaching from the purification chamber and positioning plate. The filter frame then rotates, disengaging from the positioning ring, completing the removal of the filter and honeycomb catalyst. A new honeycomb catalyst is then inserted between the purification chamber and positioning plate, followed by inserting a new filter frame into the positioning ring and tightening it. The door is then closed by rotating the adjusting ring in the opposite direction, moving the bracket outside the door to complete the filter and catalyst replacement. This device facilitates filter and catalyst replacement, ensuring operational stability and enhancing practicality. Attached Figure Description

[0015] Figure 1 This is a side sectional view of the present invention.

[0016] Figure 2 This is a partial cross-sectional view of the present invention.

[0017] Figure 3 This is a top view of the adjusting ring structure of this utility model;

[0018] Figure 4 This is a top view of the positioning plate structure of this utility model;

[0019] Figure 5This is a flowchart illustrating the process of this utility model.

[0020] In the diagram: 1. Purification chamber; 2. Inlet pipe; 3. Outlet pipe; 4. Support leg; 5. Positioning arm; 6. Chamber door; 7. Sealing gasket; 8. Positioning ring; 9. Filter frame; 10. Filter screen; 11. Honeycomb catalyst; 12. Positioning plate; 13. Adjusting ring; 14. Locking rod; 15. Limiting mechanism; 1501. Transmission ring; 1502. Locking bracket. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 This utility model provides a technical solution: an ethylene oxide sterilization tail gas purification device, including a purification box 1, an inlet pipe 2, an outlet pipe 3, a support foot 4, a positioning arm 5, a box door 6, a sealing gasket 7, a positioning ring 8, a filter frame 9, a filter screen 10, a honeycomb catalyst 11, a positioning plate 12, an adjusting ring 13, a locking rod 14, a limiting mechanism 15, a transmission ring 1501, and a locking bracket 1502. The inlet pipe 2 and the outlet pipe 3 are respectively installed through the upper and lower ends of the purification box 1. A support foot 4 is fixedly connected to the lower surface of the purification box 1 on the side of the outlet pipe 3. A positioning arm 5 is movably arranged at the edge of the lower surface of the purification box 1. A door 6 is fixedly connected to the upper end of arm 5, and a sealing gasket 7 is adhered to the side surface of door 6. A positioning ring 8 is fixedly installed on the upper inner wall of purification box 1, and a filter frame 9 is movably arranged on the inner wall of positioning ring 8. A filter screen 10 is fixedly installed on the lower inner wall of filter frame 9. A honeycomb catalyst 11 is movably connected to the lower inner wall of purification box 1. A positioning plate 12 is fixedly arranged on the inner wall of purification box 1 above honeycomb catalyst 11. An adjusting ring 13 is sleeved on the outer wall of air inlet pipe 2. A locking rod 14 is fixedly connected to the upper surface of purification box 1 on the side of adjusting ring 13. A limit mechanism 15 is provided on the lower outer wall of adjusting ring 13.

[0023] The positioning arm 5 and the purification box 1 form a rotating structure, and both the purification box 1 and the honeycomb catalyst 11 are in contact with the sealing gasket 7, which makes it easy for the user to rotate to open or close the box door 6, and to seal the device and limit the honeycomb catalyst 11 through the sealing gasket 7.

[0024] The filter frame 9 and the positioning ring 8 are threaded together, and the filter frame 9 and the purification box 1 are closely connected, making it easy for the user to rotate the filter frame 9 to install and remove it.

[0025] The honeycomb catalyst 11 forms a sliding structure with the purification box 1 and the positioning plate 12 respectively. The adjusting ring 13 is threadedly connected to the air inlet pipe 2, which makes it easy for the user to move the honeycomb catalyst 11 to disassemble and install it, and also makes it easy for the user to rotate the adjusting ring 13 to make the adjusting ring 13 move vertically, thereby driving the limiting mechanism 15 to move vertically.

[0026] The limiting mechanism 15 includes a transmission ring 1501 and a bracket 1502. The transmission ring 1501 is sleeved on the lower outer wall of the adjusting ring 13, and the bracket 1502 is fixedly connected to the side outer wall of the transmission ring 1501, so as to limit the door 6 through the limiting mechanism 15.

[0027] The transmission ring 1501 and the adjusting ring 13 are rotatably configured. The bracket 1502 is slidably connected to the lever 14 and the door 6 respectively. The side cross-section of the bracket 1502 is set to an "L" shape, so that when the adjusting ring 13 rotates, the adjusting ring 13 drives the transmission ring 1501 to move vertically downward, thereby causing the transmission ring 1501 to drive the bracket 1502 to slide relative to the lever 14, allowing the bracket 1502 to move to the outside of the door 6, and then limit it after the door 6 is closed.

[0028] Working principle: When using this ethylene oxide sterilization tail gas purification device, firstly as follows... Figure 1-5As shown, the ethylene oxide sterilization tail gas purification device is connected to the ethylene oxide sterilization tail gas purification system. The user then fixes the support foot 4 to the ground and connects the inlet pipe 2 to the ethylene oxide sterilization tail gas system. When the tail gas enters the device through the inlet pipe 2, it first passes through the filter screen 10, then through the honeycomb catalyst 11, and is discharged from the outlet pipe 3. At this time, the filter screen 10 filters particulate impurities in the tail gas, while the honeycomb catalyst 11 purifies the tail gas, thus completing the purification of the ethylene oxide sterilization tail gas. When it is necessary to replace the filter screen 10 and the honeycomb catalyst 11, the user rotates the adjusting ring 13. The adjusting ring 13 then moves upward relative to the inlet pipe 2. Next, the adjusting ring 13 drives the transmission ring 1501 upward, and then the transmission ring 150... 1. The card holder 1502 slides upward relative to the card lever 14, and at the same time, the card holder 1502 disengages from the door 6. Then, the user rotates to open the door 6. At this time, the door 6 drives the sealing gasket 7 to disengage from the purification box 1, and the door 6 drives the positioning arm 5 to rotate relative to the purification box 1. Then, the user pulls out the honeycomb catalyst 11, causing the honeycomb catalyst 11 to disengage from the purification box 1 and the positioning plate 12. Then, the user rotates the filter frame 9 to disengage from the positioning ring 8, thus completing the disassembly of the filter screen 10 and the honeycomb catalyst 11. Then, the user inserts the new honeycomb catalyst 11 between the purification box 1 and the positioning plate 12. Then, the user inserts the new filter frame 9 into the positioning ring 8 and tightens the new filter frame 9. Then, the user rotates to close the door 6. Then, the user rotates the adjusting ring 13 in the opposite direction to make the card holder... 1502 moves to the outside of the chamber door 6, thus completing the replacement of filter 10 and honeycomb catalyst 11. This facilitates the replacement of filter 10 and catalyst, ensuring the stability of the device and improving its practicality. Then, the ethylene oxide sterilized tail gas, after filtration and catalysis, enters the ethylene oxide sterilized tail gas purification system. At this time, the sterilization cabinet in the sterilization system sterilizes the tail gas. Next, the vacuum pump extracts the tail gas from the sterilization cabinet, and then mixes it with water. The mixture then passes through a gas-water separator for gas-water separation. The liquid phase is cooled by a refrigeration unit, and the cooled liquid phase is returned to the vacuum pump for recycling. Simultaneously, the gas phase, i.e., ethylene oxide gas, enters the reaction absorption tower after being buffered and demisted in the upper space of the gas-water separator. Then, the absorption tower... A circulating pump circulates the absorbent from the tank to the top of the absorption tower for spraying. Gas and absorbent (water) come into full counter-current contact under the action of the packing material inside the tower. Then, ethylene oxide dissolves to the maximum extent in the water due to the similarity-miscibility effect between the ethylene oxide and the absorbent. The solution that has absorbed ethylene oxide falls back to the reaction tank and undergoes a rapid reaction in the presence of a catalyst (1% phosphoric acid) at the bottom of the tower, generating a fusel oil solution mainly composed of ethylene glycol. The fusel oil solution is then transported to a sealed storage tank for storage via a conveying mechanism. Subsequently, the fusel oil solution is periodically handed over to a qualified hazardous waste treatment unit for safe disposal. Finally, the treated exhaust gas is discharged at high altitude through a 15m exhaust manifold. The above exhaust gas treatment process generates and emits no secondary pollution, aligning with the concept of green development.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A purification device for ethylene oxide sterilization tail gas, comprising a purification chamber (1), characterized in that: An air inlet pipe (2) and an air outlet pipe (3) are respectively installed through the upper and lower ends of the purification box (1). A support foot (4) is fixedly connected to the lower surface of the purification box (1) on the side of the air outlet pipe (3). A positioning arm (5) is movably installed at the edge of the lower surface of the purification box (1). A box door (6) is fixedly connected to the upper end of the positioning arm (5). A sealing gasket (7) is adhered to the side surface of the box door (6). A positioning ring (8) is fixedly installed on the upper inner wall of the purification box (1). The inner wall of the positioning ring (8) is movably installed. A filter frame (9) is provided, and a filter screen (10) is fixedly installed on the lower inner wall of the filter frame (9). A honeycomb catalyst (11) is movably connected to the lower inner wall of the purification box (1). A positioning plate (12) is fixedly installed on the inner wall of the purification box (1) above the honeycomb catalyst (11). An adjusting ring (13) is sleeved on the outer wall of the air inlet pipe (2). A locking rod (14) is fixedly connected to the upper surface of the purification box (1) on the side of the adjusting ring (13). A limit mechanism (15) is provided on the lower outer wall of the adjusting ring (13).

2. The ethylene oxide sterilization tail gas purification device according to claim 1, characterized in that: The positioning arm (5) and the purification box (1) form a rotating structure, and the purification box (1) and the honeycomb catalyst (11) are both attached to the sealing gasket (7).

3. The ethylene oxide sterilization tail gas purification device according to claim 1, characterized in that: The filter frame (9) and the positioning ring (8) are threaded together, and the filter frame (9) and the purification box (1) are fitted together.

4. The ethylene oxide sterilization tail gas purification device according to claim 1, characterized in that: The honeycomb catalyst (11) forms a sliding structure with the purification box (1) and the positioning plate (12) respectively, and the adjusting ring (13) and the air inlet pipe (2) are threadedly connected.

5. The ethylene oxide sterilization tail gas purification device according to claim 1, characterized in that: The limiting mechanism (15) includes a transmission ring (1501) and a bracket (1502), and the transmission ring (1501) is sleeved on the lower outer wall of the adjusting ring (13), and the bracket (1502) is fixedly connected to the side outer wall of the transmission ring (1501).

6. The ethylene oxide sterilization tail gas purification device according to claim 5, characterized in that: The transmission ring (1501) and the adjustment ring (13) are rotatably arranged, the card holder (1502) is slidably connected to the card rod (14) and the box door (6) respectively, and the side cross-section shape of the card holder (1502) is set to an "L" shape.

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