Poisonous gas emission monitoring and alarming device for ethylene oxide sterilizer

Abstract

The utility model provides a toxic gas emission monitoring and alarming device for an ethylene oxide sterilizer, which relates to the field of ethylene oxide sterilizers and comprises a sterilizer body, a display and an alarm are respectively fixed on one side of the sterilizer body, and ethylene oxide detection equipment is arranged on one side of the sterilizer body. The ethylene oxide detection equipment is communicated with the sterilizer body through an exhaust pipe, one side of the ethylene oxide detection equipment is communicated with a flow dividing box, and one side of the flow dividing box is communicated with a gas outlet pipe. At the moment, under the reverse movement of the driving assembly, the first cover plate and the second cover plate can be driven to move reversely, at the moment, the first cover plate closes the gas outlet pipe, and the second cover plate opens the return pipe, so that the toxic gas can be conveyed into the sterilizer body again through the return pipe, and the toxic gas can be sufficiently conveyed and treated conveniently; the treatment efficiency of the toxic gas is improved.

Description

Technical Field

[0001] This utility model relates to the field of ethylene oxide sterilizers, and in particular to a monitoring and alarm device for toxic gas emissions from ethylene oxide sterilizers. Background Technology

[0002] Ethylene oxide sterilization equipment is a key piece of equipment for manufacturers of disposable sterile medical devices. Its installation, operation, and management have special requirements. Ethylene oxide is used as a sterilizing agent. Ethylene oxide is a broad-spectrum sterilizing agent that can kill various microorganisms at room temperature, including spores, tubercle bacilli, bacteria, viruses, and fungi.

[0003] Patent document CN209900166U discloses a toxic gas emission monitoring and alarm device for an ethylene oxide sterilizer. The device includes a sterilizer body, a gas emission pipe outside the sterilizer body, and an ethylene oxide detection device at the end of the gas emission pipe furthest from the sterilizer body. The gas emission pipe includes a left emission short pipe and a right emission short pipe, connected to each other by a control valve. A main board is located inside the sterilizer body, connected to the ethylene oxide detection device and a display mounted on the side wall of the sterilizer body. The main board is also connected to an alarm. This invention solves the problem that existing ethylene oxide sterilizers may leave residual, incompletely decomposed ethylene oxide toxic gas in the emitted gas after sterilization, posing a safety hazard to users because current sterilization equipment cannot detect the emitted gas.

[0004] In this technology, the ethylene oxide detection equipment detects the gas. When the ethylene oxide emission exceeds the standard, the power is turned on, and a small exhaust fan in the outlet pipe draws the toxic gas in the right exhaust pipe to the one-way valve and then into the sterilizer body. However, since the sealing cover is closed at this time, toxic gas is also present in the left exhaust pipe. The exhaust fan can only transport the toxic gas in the right exhaust pipe, resulting in the toxic gas remaining in the left exhaust pipe. This makes it difficult to quickly transport and process the toxic gas, reducing the processing efficiency of the toxic gas.

[0005] Therefore, it is necessary to provide a monitoring and alarm device for toxic gas emissions from ethylene oxide sterilizers to solve the above-mentioned technical problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a monitoring and alarm device for toxic gas emissions from an ethylene oxide sterilizer.

[0007] This utility model provides a toxic gas emission monitoring and alarm device for an ethylene oxide sterilizer, comprising: a sterilizer body, a display and an alarm fixed on one side of the sterilizer body, an ethylene oxide detection device on one side of the sterilizer body, the ethylene oxide detection device being connected to the sterilizer body via an exhaust pipe, a diversion box connected to one side of the ethylene oxide detection device, an outlet pipe connected to one side of the diversion box, and a return pipe connected to one side of the diversion box. A movable plate is slidably provided at the bottom of the inner wall of the diversion box, an L-shaped plate is fixed at the top of the movable plate, and a first cover plate and a second cover plate are fixed at both ends of the L-shaped plate. Rubber pads are fixed to one side of the first cover plate and one side of the second cover plate.

[0008] A drive assembly is disposed at the bottom of the inner wall of the distribution box. The drive assembly is connected to the moving plate and is used to drive the movement of the moving plate.

[0009] Preferably, the driving assembly includes a slider fixedly disposed at the bottom of the moving plate, a groove for sliding the slider is provided at the bottom of the inner wall of the diverter box, a lead screw threadedly connected to the slider is rotatably connected in the groove, and a first drive motor fixed to the lead screw is fixed on one side of the diverter box.

[0010] Preferably, both ends of one side of the second cover plate are fixed with placement plates, and each of the two placement plates is rotatably connected to a plurality of rollers that abut against the inner wall of the diversion box.

[0011] Preferably, a circular plate is fixed to the inner wall of the return pipe, a venting groove is provided on one side of the circular plate, a baffle is rotatably provided in the venting groove, and a rotating assembly is provided at the top of the return pipe to drive the baffle to rotate.

[0012] Preferably, the rotating assembly includes a rotating rod that is rotatably disposed in the ventilation slot and fixed to the baffle, and a second drive motor that is fixed to the top of the return pipe and fixed to the rotating rod.

[0013] Preferably, a sealing ring is fitted onto the outer wall of the baffle.

[0014] Compared with related technologies, the toxic gas emission monitoring and alarm device for ethylene oxide sterilizers provided by this utility model has the following beneficial effects:

[0015] 1. A toxic gas emission monitoring and alarm device for an ethylene oxide sterilizer, based on an embodiment of this application, involves the following: Gas inside the sterilizer body is transported to an ethylene oxide detection device via an exhaust pipe. The gas is detected by the ethylene oxide detection device. When the emission level is within acceptable limits, the movement of the drive assembly drives the movement of a moving plate, which in turn drives the movement of an L-shaped plate. The L-shaped plate then drives the movement of a first cover plate and a second cover plate. This causes the first cover plate to move away from the exhaust pipe, opening the exhaust pipe, while the second cover plate moves closer to the return pipe, closing the return pipe. In this way, the gas can be directly discharged through the exhaust pipe. When the emission level exceeds the limit, the reverse movement of the drive assembly causes the first and second cover plates to move in the opposite direction. The first cover plate closes the exhaust pipe, while the second cover plate opens the return pipe. This allows the toxic gas to be transported back into the sterilizer body through the return pipe, facilitating the thorough transport and treatment of the toxic gas and improving the treatment efficiency.

[0016] 2. A toxic gas emission monitoring and alarm device for an ethylene oxide sterilizer according to an embodiment of this application, wherein when toxic gas flows back into the sterilizer body through the return pipe, the rotating component simultaneously drives the baffle to rotate, adjusting the position of the baffle and thus adjusting the opening size of the ventilation slot. This adjusts the return flow rate of toxic gas, preventing excessive toxic gas return and incomplete treatment, facilitating thorough treatment of toxic gas, and improving the treatment effect of toxic gas. Attached Figure Description

[0017] Figure 1 A schematic diagram of a preferred embodiment of this utility model;

[0018] Figure 2 A schematic diagram of the cross-sectional structure of the diversion box according to a preferred embodiment of this utility model;

[0019] Figure 3 A preferred embodiment of the present invention is provided. Figure 2 A magnified view of the structure at point A in the middle;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the reflux pipe according to a preferred embodiment of the present invention.

[0021] Labels in the diagram: 1. Sterilizer body; 2. Display; 3. Alarm; 4. Ethylene oxide detection device; 5. Exhaust pipe; 6. Diversion box; 7. Outlet pipe; 8. Return pipe; 9. Moving plate; 10. L-shaped plate; 11. First cover plate; 12. Second cover plate; 13. Rubber pad; 14. Drive assembly; 141. Slider; 142. Slide groove; 143. Lead screw; 144. First drive motor; 15. Placement plate; 16. Roller; 17. Circular plate; 18. Ventilation groove; 19. Baffle; 20. Rotating assembly; 201. Rotating rod; 202. Second drive motor; 21. Sealing ring. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please refer to the following: Figures 1 to 4 A toxic gas emission monitoring and alarm device for an ethylene oxide sterilizer includes: a sterilizer body 1, a display 2 and an alarm 3 fixed on one side of the sterilizer body 1, an ethylene oxide detection device 4 on one side of the sterilizer body 1, the ethylene oxide detection device 4 being connected to the sterilizer body 1 via an exhaust pipe 5, a diversion box 6 connected to one side of the ethylene oxide detection device 4, an exhaust pipe 7 connected to one side of the diversion box 6, and a return pipe 8 connecting one side of the diversion box 6 to the sterilizer body 1. A movable plate 9 is slidably provided at the bottom of the inner wall of the diversion box 6, an L-shaped plate 10 is fixed at the top of the movable plate 9, a first cover plate 11 and a second cover plate 12 are fixed at both ends of the L-shaped plate 10, and rubber pads 13 are fixed on one side of the first cover plate 11 and one side of the second cover plate 12.

[0024] The drive assembly 14 is located at the bottom of the inner wall of the diversion box 6. The drive assembly 14 is connected to the moving plate 9 and is used to drive the movement of the moving plate 9.

[0025] In this embodiment, the gas inside the sterilizer body 1 is transported to the ethylene oxide detection device 4 through the exhaust pipe 5. The gas is then detected by the ethylene oxide detection device 4. When the emission level is within acceptable limits, the movement of the drive assembly 14 drives the movement of the moving plate 9, which in turn drives the movement of the L-shaped plate 10. The L-shaped plate 10 then drives the movement of the first cover plate 11 and the second cover plate 12. This causes the first cover plate 11 to move away from the exhaust pipe 7, opening the exhaust pipe 7, while the second cover plate 12 moves closer to the return pipe 8, closing the return pipe 8. In this way, the gas can be directly discharged through the exhaust pipe 7. When the emission level exceeds the limit, the reverse movement of the drive assembly 14 drives the reverse movement of the first cover plate 11 and the second cover plate 12. The first cover plate 11 closes the exhaust pipe 7, while the second cover plate 12 opens the return pipe 8. This allows the toxic gas to be transported back into the sterilizer body 1 through the return pipe 8, facilitating the thorough transport and treatment of the toxic gas and improving the treatment efficiency.

[0026] It should be noted that this application is an improvement on the basis of patent number CN209900166U. The specific structure and detection process of the sterilizer body 1, display 2, alarm 3 and ethylene oxide detection device 4 in this application have been specifically disclosed in the above patent, so this application will not repeat them in detail.

[0027] In a further embodiment, such as Figure 2 As shown, the drive assembly 14 includes a slider 141 fixedly mounted at the bottom of the movable plate 9. A groove 142 for sliding the slider 141 is provided at the bottom of the inner wall of the diverter box 6. A lead screw 143 threadedly connected to the slider 141 is rotatably connected in the groove 142. A first drive motor 144 fixed to the lead screw 143 is fixed on one side of the diverter box 6.

[0028] In this embodiment, the first drive motor 144 drives the lead screw 143 to rotate, the lead screw 143 drives the slider 141 to move horizontally, the slider 141 drives the moving plate 9 to move horizontally, the moving plate 9 drives the L-shaped plate 10 to move horizontally, thereby driving the first cover plate 11 and the second cover plate 12 to move horizontally, so that the first cover plate 11 and the second cover plate 12 can move to different positions, which facilitates the delivery of gas in different directions.

[0029] In a further embodiment, such as Figure 3 As shown, both ends of one side of the second cover plate 12 are fixed with placement plates 15, and each of the two placement plates 15 is rotatably connected to a plurality of rollers 16 that abut against the inner wall of the diversion box 6.

[0030] In this embodiment, when the second cover plate 12 moves along the inner wall of the diversion box 6, it is convenient to provide auxiliary support for the second cover plate 12 with the cooperation of the roller 16, thereby reducing the friction between the second cover plate 12 and the inner wall of the diversion box 6 and facilitating the long-term use of the second cover plate 12.

[0031] In a further embodiment, such as Figure 4 As shown, a circular plate 17 is fixed to the inner wall of the return pipe 8. A ventilation groove 18 is provided on one side of the circular plate 17. A baffle 19 is rotatably provided in the ventilation groove 18. A rotating assembly 20 is provided at the top of the return pipe 8 to drive the baffle 19 to rotate.

[0032] In this embodiment, when toxic gas flows back into the sterilizer body 1 through the return pipe 8, the rotating component 20 simultaneously drives the baffle 19 to rotate, adjusting the position of the baffle 19 and thus adjusting the opening size of the ventilation slot 18. This adjusts the return flow of toxic gas, preventing excessive toxic gas return and incomplete treatment, facilitating thorough treatment of toxic gas, and improving the treatment effect of toxic gas.

[0033] In a further embodiment, such as Figure 4 As shown, the rotating assembly 20 includes a rotating rod 201 that is rotatably disposed in the ventilation groove 18 and fixed to the baffle 19. A second drive motor 202 that is fixed to the rotating rod 201 is fixed at the top of the return pipe 8. A sealing ring 21 is sleeved on the outer wall of the baffle 19.

[0034] In this embodiment, the second drive motor 202 drives the rotating rod 201 to rotate, and the rotating rod 201 drives the baffle 19 to rotate. Adjusting the position of the baffle 19 adjusts the opening size of the ventilation groove 18. At the same time, with the cooperation of the sealing ring 21, it facilitates the tight contact between the baffle 19 and the ventilation groove 18, thereby adjusting the backflow of toxic gas and preventing excessive backflow of toxic gas from causing incomplete treatment.

[0035] The working principle of the toxic gas emission monitoring and alarm device for an ethylene oxide sterilizer provided by this utility model is as follows: The gas inside the sterilizer body 1 is transported to the ethylene oxide detection device 4 through the exhaust pipe 5. The gas is detected by the ethylene oxide detection device 4. When the emission level is within acceptable limits, the first drive motor 144 drives the lead screw 143 to rotate. The lead screw 143 drives the slider 141 to move horizontally. The slider 141 drives the moving plate 9 to move horizontally. The moving plate 9 drives the L-shaped plate 10 to move horizontally, thereby driving the first cover plate 11 and the second cover plate 12 to move horizontally. This causes the first cover plate 11 to move away from the exhaust pipe 7, opening the exhaust pipe 7, while the second cover plate 12 moves closer to the return pipe 8, closing the return pipe 8. Thus, the gas can be directly discharged through the exhaust pipe 7. When the emission level exceeds the standard, the first drive motor 144 rotates in the opposite direction, driving the first cover plate 11 to move horizontally. The first cover plate 11 and the second cover plate 12 move in opposite directions. At this time, the first cover plate 11 closes the vent pipe 7, while the second cover plate 12 opens the return pipe 8. In this way, the toxic gas can be transported back into the sterilizer body 1 through the return pipe 8, which facilitates the full transport and treatment of the toxic gas and improves the treatment efficiency of the toxic gas. When the toxic gas flows back into the sterilizer body 1 through the return pipe 8, the second drive motor 202 drives the rotating rod 201 to rotate. The rotating rod 201 drives the baffle 19 to rotate, adjusting the position of the baffle 19. This adjusts the opening size of the ventilation groove 18. At the same time, with the cooperation of the sealing ring 21, it is convenient for the baffle 19 and the ventilation groove 18 to make close contact, thereby adjusting the return flow of the toxic gas and avoiding excessive return of toxic gas, which would lead to incomplete treatment. This facilitates the full treatment of toxic gas and improves the treatment effect of toxic gas.

[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A toxic gas emission monitoring and alarm device for an ethylene oxide sterilizer, characterized in that, include: The sterilizer body (1) has a display (2) and an alarm (3) fixed on one side. An ethylene oxide detection device (4) is provided on one side of the sterilizer body (1). The ethylene oxide detection device (4) is connected to the sterilizer body (1) through an exhaust pipe (5). A diversion box (6) is connected to one side of the ethylene oxide detection device (4). An exhaust pipe (7) is connected to one side of the diversion box (6). One side of the diversion box (6) is connected to the sterilizer body (1) through a return pipe (8). A movable plate (9) is slidably provided at the bottom of the inner wall of the diversion box (6). An L-shaped plate (10) is fixed at the top of the movable plate (9). A first cover plate (11) and a second cover plate (12) are fixed at both ends of the L-shaped plate (10). A rubber pad (13) is fixed on one side of the first cover plate (11) and one side of the second cover plate (12). A drive assembly (14) is disposed at the bottom of the inner wall of the diversion box (6). The drive assembly (14) is connected to the moving plate (9) and is used to drive the movement of the moving plate (9).

2. The toxic gas emission monitoring and alarm device for an ethylene oxide sterilizer according to claim 1, characterized in that, The drive assembly (14) includes a slider (141) fixedly mounted at the bottom of the movable plate (9). The bottom of the inner wall of the diversion box (6) is provided with a groove (142) for the slider (141) to slide. A lead screw (143) threadedly connected to the slider (141) is rotatably connected in the groove (142). A first drive motor (144) fixed to the lead screw (143) is fixed on one side of the diversion box (6).

3. The toxic gas emission monitoring and alarm device for an ethylene oxide sterilizer according to claim 2, characterized in that, Both ends of one side of the second cover plate (12) are fixed with placement plates (15), and each of the two placement plates (15) is rotatably connected to a plurality of rollers (16) that abut against the inner wall of the diversion box (6).

4. The toxic gas emission monitoring and alarm device for an ethylene oxide sterilizer according to claim 1, characterized in that, The inner wall of the return pipe (8) is fixed with a circular plate (17), and a ventilation groove (18) is provided on one side of the circular plate (17). A baffle (19) is rotatably provided in the ventilation groove (18), and a rotating assembly (20) is provided at the top of the return pipe (8) to drive the baffle (19) to rotate.

5. The toxic gas emission monitoring and alarm device for an ethylene oxide sterilizer according to claim 4, characterized in that, The rotating assembly (20) includes a rotating rod (201) which is rotatably disposed in the ventilation groove (18) and fixed to the baffle (19), and a second drive motor (202) which is fixed to the top of the return pipe (8) and is fixed to the rotating rod (201).

6. The toxic gas emission monitoring and alarm device for an ethylene oxide sterilizer according to claim 5, characterized in that, A sealing ring (21) is fitted onto the outer wall of the baffle (19).

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