A device for recovering and reusing ethylene oxide waste gas

Abstract

The utility model relates to an ethylene oxide waste gas recovery and reuse device, and the utility model relates to the technical field of ethylene oxide waste gas recovery and reuse. The ethylene oxide waste gas recovery and reuse device comprises a sterilization device, one side of the sterilization device is connected to a second air pump through a pipeline, one side of the second air pump is fixed with a second solenoid valve through bolts, one side of the second solenoid valve is connected to a storage box through a pipeline, one side of the storage box is provided with a feeding pipe, one side of the storage box is fixed with a second pressure gauge through bolts, and one side of the sterilization device is connected to a first air pump through a pipeline. By setting the recovery device, the ethylene oxide gas in the sterilization device can be recovered and recycled.

Description

Technical Field

[0001] The utility model relates to the technical field of an ethylene oxide waste gas recovery and reuse device, in particular to an ethylene oxide waste gas recovery and reuse device. Background Art

[0002] Ethylene oxide is a broad-spectrum sterilant with strong gas penetrability. It can kill various microorganisms, including bacteria, viruses, fungi, Mycobacterium tuberculosis, etc. Ethylene oxide does not corrode plastics, metals and rubber, and will not cause items to turn yellow and become brittle. It has a wide range of practical applications. When the ethylene oxide sterilizer is in use, the ethylene oxide gas introduced into it is generally directly pumped into a special collection device for absorption after use, which leads to the waste of ethylene oxide gas.

[0003] After searching, it was found that the Chinese patent with the authorization announcement 201220538170.1 disclosed an ethylene oxide recovery device, which includes a water sprayer arranged outside the outlet of the safety valve at the top of the distillation tower; a collecting funnel arranged below the sprayer; and a collecting pool or a collecting tank connected to the funnel through a pipeline; characterized in that the gas ejection direction of the safety valve of the recovery device is perpendicular to the water spraying direction of the water sprayer. The recovery device of the utility model can be used for the safe recovery of the bleed gas of the safety valve of the ethylene oxide distillation tower, solving the problem that the safety valve of the ethylene oxide distillation tower discharges ethylene oxide directly into the atmosphere.

[0004] However, the patents in the prior art have the following disadvantages:

[0005] The ethylene oxide recovery device is only provided with a recovery device, and the recovered ethylene oxide cannot be reused. The ethylene oxide is recovered by setting a water sprinkler, which may not be fully recovered. The recovery is not in a closed environment, and there may be leakage. Utility Model Content

[0006] 1. Technical issues to be solved

[0007] In view of the deficiencies in the prior art, the utility model provides an ethylene oxide waste gas recovery and reuse device, which solves the problem that only a recovery device is provided, the recovered ethylene oxide cannot be reused, and the ethylene oxide is recovered by setting a water sprinkler, which may not be fully recovered, and the recovery is not in a closed environment, which may cause leakage.

[0008] (II) Technical solution

[0009] To achieve the above objectives, the utility model is implemented through the following technical solutions: it includes a sterilization device, characterized in that: a second air pump is connected to one side of the sterilization device through a pipeline, a second solenoid valve is fixed to one side of the second air pump through bolts, a storage box is connected to one side of the second solenoid valve through a pipeline, a feeding pipe is provided on one side of the storage box, a second pressure gauge is fixed to one side of the storage box through bolts, a first air pump is connected to one side of the sterilization device through a pipeline, a first solenoid valve is fixed to one side of the first air pump through bolts, a recovery box is connected to one side of the first solenoid valve through a pipeline, a third pressure gauge is fixed to one side of the recovery box through bolts, an integrated board is fixed to the front end of the sterilization device through bolts, a first pressure gauge is fixed to the front end of the integrated board through bolts, and an upper cover is provided at the upper end of the sterilization device.

[0010] As a preferred embodiment of the utility model, heating plates are fixed on both sides of the interior of the sterilization device by bolts.

[0011] As a preferred embodiment of the utility model, a concentration sensor is fixed to the bottom end of the sterilization device by bolts.

[0012] As a preferred embodiment of the utility model, a screen is provided at the front end of the integrated board, and the screen is electrically connected to the concentration sensor.

[0013] As a preferred embodiment of the utility model, a fixing handle is fixed to the upper end of the upper cover by bolts, and a one-way valve is fixed to the upper end of the upper cover by bolts.

[0014] As a preferred embodiment of the utility model, a third solenoid valve is fixed to one side of the sterilization device by bolts, and a third air pump is fixed to one side of the third solenoid valve by bolts.

[0015] As a preferred embodiment of the present invention, an absorption box is provided on one side of the third air pump.

[0016] As a preferred embodiment of the utility model, one side of the third air pump is connected to an anti-back-suction device through a pipeline, the lower end pipeline of the anti-back-suction device is located at the bottom end of the absorption box, and an air outlet pipe is provided at the upper end of the absorption box.

[0017] (III) Beneficial effects

[0018] The utility model provides an ethylene oxide waste gas recovery and reuse device, which has the following

[0019] Beneficial effects:

[0020] 1. The utility model is a device for recovering and reusing ethylene oxide waste gas. By setting a pressure gauge, the internal pressure of the device can be detected at all times to prevent danger caused by excessive pressure. A sterilization device is set to disinfect objects. The concentration of disinfection in the sterilization device can be the same each time through concentration detection.

[0021] 2. The utility model is a device for recovering and reusing ethylene oxide waste gas. By setting a recovery device, the ethylene oxide gas in the sterilization device is recovered and recycled.

[0022] 3. In the utility model, a heating plate is arranged in the sterilization device of the ethylene oxide waste gas recovery and reuse device to raise the temperature to the highest state of ethylene oxide sterilization efficiency, which is beneficial to reducing the sterilization time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a schematic diagram of the top structure of the utility model;

[0026] Figure 3 It is a schematic diagram of the left structure of the utility model;

[0027] In the figure: 1. Sterilization device; 2. Integrated board; 3. Screen; 4. First pressure gauge; 5. First air pump; 6. First solenoid valve; 7. Recovery box; 8. Storage box; 9. Feeding pipe; 10. Second solenoid valve; 11. Second air pump; 12. Fixing handle; 13. Upper cover; 14. One-way valve; 15. Heating plate; 16. Concentration sensor; 17. Third solenoid valve; 18. Third air pump; 19. Anti-backflow device; 20. Absorption box; 21. Temperature sensor; 22. Exhaust pipe; 23. Second pressure gauge; 24. Third pressure gauge. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figures 1 to 3The utility model provides a technical solution: an ethylene oxide waste gas recovery and reuse device, comprising a sterilization device 1, one side of the sterilization device 1 is connected to a second air pump 11 through a pipeline, one side of the second air pump 11 is fixed with a second solenoid valve 10 through bolts, one side of the second solenoid valve 10 is connected to a storage box 8 through a pipeline, one side of the storage box 8 is provided with a feeding pipe 9, one side of the storage box 8 is fixed with a second pressure gauge 23 through bolts, one side of the sterilization device 1 is connected to a first air pump 5 through a pipeline, one side of the first air pump 5 is fixed with a first solenoid valve 6 through bolts, one side of the first solenoid valve 6 is connected to a recovery box 7 through a pipeline, one side of the recovery box 7 is fixed with a third pressure gauge 24 through bolts, the front end of the sterilization device 1 is fixed with an integrated board 2 through bolts, the front end of the integrated board 2 is fixed with a first pressure gauge 4 through bolts, and the upper end of the sterilization device 1 is provided with an upper cover 13.

[0030] In a specific embodiment of the utility model, a second air pump 11 is connected to one side of the sterilization device 1 through a pipeline, which is used to pump ethylene oxide from the storage box 8 into the sterilization device 1. A second solenoid valve 10 is fixed to one side of the second air pump 11 for controlling the output of the material in the storage box 8. A storage box 8 is connected to one side of the second solenoid valve 10 through a pipeline for storing ethylene oxide. A feeding pipe 9 is provided on one side of the storage box 8 for transporting the prepared ethylene oxide into the storage box 8 for storage. A second pressure gauge 23 is fixed to one side of the storage box 8 for detecting the internal pressure condition of the storage box 8 to prevent danger caused by excessive pressure. A first air pump 5 is connected to one side of the sterilization device 1 through a pipeline. When the internal disinfection of the sterilization device 1 is completed The remaining ethylene oxide inside is pumped into the recovery box 7 through the first air pump 5 for recovery and secondary utilization. A first solenoid valve 6 is fixed on one side of the first air pump 5 for controlling the gas input and output in the recovery box 7. One side of the first solenoid valve 6 is connected to the recovery box 7 through a pipeline for storing the remaining ethylene oxide in the sterilization device 1. A third pressure gauge 24 is fixed on one side of the recovery box 7 for detecting the internal pressure of the recovery box 7 to prevent excessive pressure. An integrated board 2 is fixed on the front end of the sterilization device 1, and a first pressure gauge 4 is fixed on the front end of the integrated board 2 for detecting the internal pressure state of the sterilization device 1. An upper cover 13 is provided on the upper end of the sterilization device 1 to keep the sterilization device 1 in a closed state to prevent leakage of ethylene oxide gas.

[0031] Specifically, heating plates 15 are fixed on both sides of the sterilization device 1 by bolts.

[0032] In order to solve the problem of shortening the disinfection time, Figure 2 As shown, heating plates 15 are fixed on both sides of the interior of the sterilization device 1. By setting the heating plates 15, the temperature is raised to the state with the highest efficiency of ethylene oxide sterilization, which is beneficial to reducing the sterilization time.

[0033] Specifically, a concentration sensor 16 is fixed to the bottom end of the sterilization device 1 by bolts.

[0034] In order to solve the problem of gas concentration detection in the sterilization device, such as Figure 2 As shown, a concentration sensor 16 is fixed at the bottom of the sterilization device 1, and the concentration of disinfection in the sterilization device can be made the same each time through concentration detection.

[0035] Specifically, a screen 3 is disposed at the front end of the integrated board 2 , and the screen 3 is electrically connected to the concentration sensor 16 .

[0036] In order to solve the problem of data display in the sterilization device, such as Figure 1 As shown, a screen 3 is provided at the front end of the integrated board 2 , and the screen 3 is electrically connected to the concentration sensor 16 for displaying the data monitored by the concentration sensor 16 .

[0037] Specifically, a fixing handle 12 is fixed to the upper end of the upper cover 13 by bolts, and a one-way valve 14 is fixed to the upper end of the upper cover 13 by bolts.

[0038] In order to solve the problem that the upper cover cannot be opened and the recycling box recycles waste gas to form a vacuum state, such as Figure 1 As shown, a fixing handle 12 is fixed on the upper end of the upper cover 13 to facilitate opening the upper cover 13. A one-way valve 14 is fixed on the upper end of the upper cover 13. When the sterilization is completed, after the recovery box 7 recovers the waste gas, the sterilization device 1 is in a vacuum state, the upper cover 13 cannot be opened and the materials cannot be taken out. By setting the one-way valve 14, external gas can enter the sterilization device 1 but cannot go out from the one-way valve 14, thereby achieving pressure balance inside and outside the sterilization device 1.

[0039] Specifically, a third solenoid valve 17 is fixed to one side of the sterilization device 1 by bolts, and a third air pump 18 is fixed to one side of the third solenoid valve 17 by bolts.

[0040] In order to solve the problem of high internal gas concentration during sterilization of the sterilization device, such as Figure 1 As shown, a third solenoid valve 17 is fixed on one side of the sterilization device 1, and a third air pump 18 is fixed on one side of the third solenoid valve 17. When the material is placed in the sterilization device 1, the air inside the sterilization device 1 is extracted by the third air pump 18, and then the ethylene oxide gas recovered in the recovery box 7 is discharged through the heating plate 15 for reuse.

[0041] Specifically, an absorption box 20 is provided on one side of the third air pump 18 .

[0042] In order to solve the problem of gas leakage inside the sterilization device causing harm to the environment, such as Figure 1 As shown, an absorption box 20 is provided on one side of the third air pump 18, and a large amount of organic solvent is provided inside the absorption box 20 for absorbing the discharged ethylene oxide.

[0043] Specifically, one side of the third air pump 18 is connected to an anti-back-sucking device 19 through a pipeline, the lower end pipeline of the anti-back-sucking device 19 is located at the bottom end of an absorption box 20, and an air outlet pipe 22 is arranged at the upper end of the absorption box 20.

[0044] In order to solve the problem of preventing gas leakage from causing harm to the environment, such as Figure 1 As shown, one side of the third air pump 18 is connected to an anti-backflow device 19 through a pipeline to prevent the organic solvent inside the absorption box 20 from being sucked into the sterilization device 1. The lower end pipeline of the anti-backflow device 19 is below the organic solvent liquid level at the bottom of the absorption box 20, so that when the third air pump 18 extracts the air in the sterilization device 1, when it is in a vacuum state, the waste gas in the recovery box 7 is discharged, and the third solenoid valve 17 is closed after a certain period of discharge to make the gas in the sterilization device 1 purer. A large amount of organic solvent is arranged inside the absorption box 20. Even when ethylene oxide gas is discharged, it is absorbed by the organic solvent and will not pollute the environment. An outlet pipe 22 is arranged at the upper end of the absorption box 20 to discharge the gas out of the absorption box 20.

[0045] The specific implementation methods disclosed in the present invention omit detailed descriptions of known functions and known components. To ensure the compatibility of the equipment, the operating methods adopted are consistent with the parameters of commercially available equipment.

[0046] In summary, the working principle and use process of the utility model are as follows: one side of the sterilization device 1 is connected to the second air pump 11 through a pipeline, which is used to pump ethylene oxide from the storage box 8 into the sterilization device 1; one side of the second air pump 11 is fixed with a second solenoid valve 10, which is used to control the output of the material in the storage box 8; one side of the second solenoid valve 10 is connected to the storage box 8 through a pipeline, which is used to store ethylene oxide; one side of the storage box 8 is provided with a feeding pipe 9, which is used to transport the prepared ethylene oxide into the storage box 8 for storage; one side of the storage box 8 is fixed with a second pressure gauge 23, which is used to detect the internal pressure condition of the storage box 8 to prevent danger caused by excessive pressure; one side of the sterilization device 1 is connected to the first air pump 5 through a pipeline; when the internal disinfection of the sterilization device 1 is completed, the remaining ethylene oxide inside is pumped out Ethylene oxide is pumped into the recovery box 7 through the first air pump 5 to be recovered for secondary use. A first solenoid valve 6 is fixed on one side of the first air pump 5 to control the gas input and output in the recovery box 7. One side of the first solenoid valve 6 is connected to the recovery box 7 through a pipeline to store the remaining ethylene oxide in the sterilization device 1. A third pressure gauge 24 is fixed on one side of the recovery box 7 to detect the internal pressure of the recovery box 7 to prevent excessive pressure. An integrated board 2 is fixed at the front end of the sterilization device 1. A first pressure gauge 4 is fixed at the front end of the integrated board 2 to detect the internal pressure state of the sterilization device 1. An upper cover 13 is provided on the upper end of the sterilization device 1 to keep the sterilization device 1 in a closed state to prevent leakage of ethylene oxide gas. Heating plates 15 are fixed on both sides of the sterilization device 1. By setting The heating plate 15 raises the temperature to the state with the highest efficiency of ethylene oxide sterilization, which is beneficial to reducing the sterilization time. A concentration sensor 16 is fixed at the bottom of the sterilization device 1. Through concentration detection, the same sterilization concentration can be achieved each time in the sterilization device. A screen 3 is arranged at the front end of the integrated board 2. The screen 3 is electrically connected to the concentration sensor 16 and is used to display the data monitored by the concentration sensor 16. A fixed handle 12 is fixed at the upper end of the upper cover 13 to facilitate opening the upper cover 13. A one-way valve 14 is fixed at the upper end of the upper cover 13. When the sterilization is completed, the recycling box 7 recycles the waste gas. The sterilization device 1 is in a vacuum state. The upper cover 13 cannot be opened and the material cannot be taken out. By setting the one-way valve 14, external gas can enter the sterilization device 1 but cannot go out from the one-way valve 14, so as to achieve the sterilization device 1. The external pressure is balanced. A third solenoid valve 17 is fixed on one side of the sterilization device 1. A third air pump 18 is fixed on one side of the third solenoid valve 17. When the material is placed in the sterilization device 1, the air inside the sterilization device 1 is extracted by the third air pump 18, and then the ethylene oxide gas recovered in the recovery box 7 is discharged through the heating plate 15 for reuse. An absorption box 20 is arranged on one side of the third air pump 18. A large amount of organic solvent is arranged inside the absorption box 20 to absorb the discharged ethylene oxide. An anti-backflow device 19 is connected to one side of the third air pump 18 through a pipeline to prevent the organic solvent inside the absorption box 20 from being sucked into the sterilization device 1. The lower end pipeline of the anti-backflow device 19 is below the liquid level of the organic solvent at the bottom of the absorption box 20, so that when the third air pump 18 extracts the air in the sterilization device 1,When in a vacuum state, the waste gas from the recovery box 7 is discharged. After a certain period of time, the third solenoid valve 17 is closed to make the gas in the sterilization device 1 purer. There are more organic solvents inside the absorption box 20. Even if the ethylene oxide gas is discharged, it is absorbed by the organic solvent and will not pollute the environment. The upper end of the absorption box 20 is provided with an outlet pipe 22 to discharge the gas out of the absorption box 20.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ethylene oxide waste gas recovery and reuse device, comprising a sterilization device (1), characterized in that: One side of the sterilizing device (1) is connected to a second air pump (11) through a pipeline, and one side of the second air pump (11) is fixed with a second solenoid valve (10) through bolts. One side of the second solenoid valve (10) is connected to a storage box (8) through a pipeline, and one side of the storage box (8) is provided with a feeding pipe (9), and one side of the storage box (8) is fixed with a second pressure gauge (23) through bolts. One side of the sterilizing device (1) is connected to a first air pump (5) through a pipeline, and one side of the first air pump (5) is fixed with a first solenoid valve (6) through bolts. One side of the first solenoid valve (6) is connected to a recovery box (7) through a pipeline, and one side of the recovery box (7) is fixed with a third pressure gauge (24) through bolts. The front end of the sterilizing device (1) is fixed with an integrated board (2) through bolts, and the front end of the integrated board (2) is fixed with a first pressure gauge (4) through bolts. The upper end of the sterilizing device (1) is provided with an upper cover (13).

2. The ethylene oxide waste gas recovery and recycling device according to claim 1, characterized in that: Heating plates (15) are fixed to both sides of the interior of the sterilization device (1) by means of bolts.

3. The ethylene oxide waste gas recovery and recycling device according to claim 2, characterized in that: A concentration sensor (16) is fixed to the bottom end of the sterilization device (1) via bolts.

4. The ethylene oxide waste gas recovery and recycling device according to claim 1, characterized in that: A screen (3) is provided at the front end of the integrated board (2), and the screen (3) is electrically connected to the concentration sensor (16).

5. The ethylene oxide waste gas recovery and reuse device according to claim 1, characterized in that: A fixing handle (12) is fixed to the upper end of the upper cover (13) by means of bolts, and a one-way valve (14) is fixed to the upper end of the upper cover (13) by means of bolts.

6. The ethylene oxide waste gas recovery and recycling device according to claim 1, characterized in that: A third solenoid valve (17) is fixed to one side of the sterilization device (1) via bolts, and a third air pump (18) is fixed to one side of the third solenoid valve (17) via bolts.

7. The ethylene oxide waste gas recovery and reuse device according to claim 6, characterized in that: An absorption box (20) is provided on one side of the third air pump (18).

8. The ethylene oxide waste gas recovery and recycling device according to claim 7, characterized in that: One side of the third air pump (18) is connected to an anti-backflow device (19) via a pipeline, the lower end pipeline of the anti-backflow device (19) is located at the bottom end of the absorption box (20), and the upper end of the absorption box (20) is provided with an air outlet pipe (22).

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