Ethylene oxide sterilizer dosing device

Abstract

The utility model discloses a dosing device of an ethylene oxide sterilizer, which belongs to the technical field of sterilizers and comprises a first gas delivery pipe for dosing of the ethylene oxide sterilizer, the side edge of the first gas delivery pipe is fixedly connected with an outer shell, and the upper side of the outer shell is fixedly connected with a gas tank filled with nitrogen. A second air pump is installed on the side edge of the air tank, a third air pump is fixedly connected to the upper side of the outer shell, an exhaust pipe is connected to the upper side of the third air pump, after dosing and sterilization are completed, the second air pump is started, nitrogen in the air tank is exhausted into the outer shell, and the concentration of ethylene oxide is reduced; meanwhile, the second gas conveying pipe conveys nitrogen into the first gas conveying pipe, ethylene oxide remaining in the first gas conveying pipe is treated, and after the concentration of ethylene oxide is reduced to a safe range, a third gas pump is started to exhaust ethylene oxide into a tail gas treatment device through an exhaust pipe, and ethylene oxide is treated.

Description

Technical Field

[0001] The utility model belongs to the technical field of sterilizers, in particular to an ethylene oxide sterilizer dosing device. Background Art

[0002] Ethylene oxide sterilizer is an instrument used for sterilization in industrial production and medical institutions. It is usually composed of a sterilization chamber, a heating system, a vacuum system, a dosing device and a gasification device, a residual gas treatment system, a monitoring and control system, etc.

[0003] The current ethylene oxide sterilizer dosing device, after adding medicine, ethylene oxide will remain in the sterilizer. If it comes into contact with the skin, redness and swelling will quickly occur, and blistering will occur after a few hours. Repeated contact can cause allergies, and liquid splashing into the eyes can cause corneal burns.

[0004] For example, in the prior art Chinese patent document (application announcement number CN216417880U), an ethylene oxide sterilizer dosing device is used. When the device is in use, the distance sensor can determine whether the door of the sterilizer box is closed, and the pressure sensor can determine whether there are items to be sterilized in the sterilizer box. The dosing is performed by automatically controlling the opening of the solenoid valve, and the mass flow meter stops the dosing according to the dosing amount. The prior art has the following problems: after the dosing is completed, ethylene oxide remains in the sterilizer. If it comes into contact with the skin, redness and swelling will occur quickly, and blistering will occur after a few hours. Repeated contact can cause sensitization, and liquid splashing into the eyes can cause corneal burns.

[0005] Therefore, in view of this situation, it is urgent to design and produce an ethylene oxide sterilizer dosing device to meet the needs of actual use. Utility Model Content

[0006] The utility model aims to provide an ethylene oxide sterilizer dosing device to solve the problems raised in the background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an ethylene oxide sterilizer dosing device, comprising a first air pipe used for dosing the ethylene oxide sterilizer, the side of the first air pipe is fixedly connected to an outer shell, the upper side of the outer shell is fixedly connected to a gas tank filled with nitrogen, a second air pump is installed on the side of the gas tank, the output end of the second air pump is fixedly connected to a third air pipe, the side of the third air pipe is connected to a second air pipe connected to the first air pipe, the upper side of the outer shell is fixedly connected to the third air pump, and the upper side of the third air pump is connected to an exhaust pipe.

[0008] Preferably, a first motor is installed inside the outer shell, and an output end of the first motor is fixedly connected to a spray pipe.

[0009] Preferably, a plurality of spray ports are installed on the side of the spray pipe, and a fifth air supply pipe is connected to the side of the spray pipe.

[0010] Preferably, an end of the exhaust pipe away from the third air pump is connected to an exhaust gas processor for processing ethylene oxide, and a second gas tank is connected to the side of the fifth gas pipeline.

[0011] Preferably, a fan is installed inside the outer shell, and the end of the first air supply pipe away from the outer shell is connected to a first air pump.

[0012] Preferably, the fixed end of the first air pump is fixedly connected to an ethylene oxide placement tank, and the side of the outer shell is connected to a fourth air pipe.

[0013] Preferably, a fourth air pump is connected to the side of the fourth air delivery pipe, and a base is fixedly connected to the lower side of the outer shell.

[0014] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0015] The ethylene oxide sterilizer dosing device starts the second air pump after the dosing sterilization is completed, discharges the nitrogen in the gas tank to the inside of the outer shell to reduce the concentration of ethylene oxide, and at the same time the second air pipe transports the nitrogen to the inside of the first air pipe to treat the ethylene oxide remaining in the first air pipe. After the concentration of ethylene oxide is reduced to a safe range, the third air pump is started to discharge the ethylene oxide to the exhaust gas processor through the exhaust pipe to treat the ethylene oxide. After the ethylene oxide is discharged, the air in the second gas tank is sprayed into the inside of the outer shell through the spray pipe to clean the outer shell to prevent some ethylene oxide from remaining on the inner wall of the outer shell and causing harm to the human body.

[0016] The ethylene oxide sterilizer dosing device drives the ethylene oxide to move by a fan, and simultaneously starts the fourth air pump to move the ethylene oxide through the fourth air pipe, so as to circulate and transport the ethylene oxide in the outer shell, thereby preventing the ethylene oxide from accumulating inside the outer shell due to the density of ethylene oxide being higher than that of air, resulting in different ethylene oxide concentrations inside the outer shell and causing unnecessary consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the spray pipe of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the fan of the utility model.

[0021] Description of reference numerals:

[0022] In the figure: 1. base; 2. outer shell; 3. ethylene oxide placement tank; 4. first air pump; 5. first air pipe; 6. second air pipe; 7. gas tank; 8. second air pump; 9. third air pipe; 10. third air pump; 11. exhaust pipe; 12. second gas tank; 13. fifth air pipe; 14. first motor; 15. spray pipe; 16. spray port; 18. fourth air pump; 19. fourth air pipe; 20. fan; 21. exhaust gas processor. DETAILED DESCRIPTION

[0023] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0024] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside in the figures shown in the present utility model, and are explained here together.

[0025] The connection method can be bonding, welding, bolt connection, etc., depending on actual needs.

[0026] In order to solve the problem that after the addition of the drug is completed, ethylene oxide remains in the sterilizer, and if it comes into contact with the skin, redness and swelling will occur quickly, and blistering will occur after a few hours. Repeated contact may cause allergies, and liquid splashing into the eyes may cause corneal burns. Figures 1 to 3The device for dosing ethylene oxide sterilizer shown in the figure comprises a first gas pipe 5 used for dosing ethylene oxide sterilizer, the first gas pipe 5 is provided with a valve, and is located at the lower side of a second gas pipe 6, the side of the first gas pipe 5 is fixedly connected to an outer shell 2, the outer shell 2 is provided with a rotating shaft, an opening and closing door, a fixing fastener and a handle, the upper side of the outer shell 2 is fixedly connected to a gas tank 7 filled with nitrogen, the gas tank 7 is provided with a gas filling port, a second air pump 8 is installed on the side of the gas tank 7, the output end of the second air pump 8 is fixedly connected to a third gas pipe 9, the third gas pipe 9 is provided with a valve, and is located at the second On the upper side of the air pipe 6, the side of the third air pipe 9 is connected to the second air pipe 6 connected to the first air pipe 5, the upper side of the outer shell 2 is fixedly connected to the third air pump 10, the upper side of the third air pump 10 is connected to the exhaust pipe 11, the inside of the outer shell 2 is installed with a first motor 14, the output end of the first motor 14 is fixedly connected to a spray pipe 15, one end of the spray pipe 15 is fixedly connected to the output end of the first motor 14, and the other end is rotatably connected to the inside of the outer shell 2, a plurality of spray ports 16 are installed on the side of the spray pipe 15, and the side of the spray pipe 15 is connected to a fifth air pipe 13.

[0027] One end of the exhaust pipe 11 away from the third air pump 10 is connected to an exhaust gas processor 21 for processing ethylene oxide, a pump is arranged on the side of the fifth air pipe 13, and the fifth air pipe 13 is a retractable hose, the side of the fifth air pipe 13 is connected to the second gas tank 12, the side of the second gas tank 12 is provided with an air inlet, after the ethylene oxide is discharged from the outer shell 2, the inside of the outer shell 2 is cleaned through the spray port 16, a fan 20 is installed inside the outer shell 2, the end of the first air pipe 5 away from the outer shell 2 is connected to the first air pump 4, the fixed end of the first air pump 4 is fixedly connected to the ethylene oxide placement tank 3, the side of the outer shell 2 is connected to the fourth air pipe 19, the side of the fourth air pipe 19 is connected to the fourth air pump 18, the input end of the fourth air pump 18 is connected to the outer shell 2, the output end is connected to the fourth air pipe 19, and the lower side of the outer shell 2 is fixedly connected to the base 1.

[0028] All structures and instruments are heat-resistant and waterproof.

[0029] The first air pump 3, the second air pump 8, the third air pump 10, the first motor 14, the fourth air pump 18 and the fan 20 are all conventional instruments. Their working principles, sizes and models are irrelevant to the functions of the present application, so they will not be described in detail. They are all controlled by a remote control switch. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present utility model is mainly used to protect mechanical devices, so the present utility model will no longer explain the control method and circuit connection in detail.

[0030] How it works

[0031] The ethylene oxide sterilizer dosing device, during use, starts the first air pump 4 to transport the ethylene oxide in the ethylene oxide placement tank 3 to the inside of the outer shell 1 through the first air pipe 5, and starts the fan 20 at the same time, and then starts the fourth air pump 18 to transport the ethylene oxide at the lower part of the outer shell 2 to the upper side of the outer shell 2. After the sterilization is completed, the second air pump 8 is started to transport the nitrogen in the gas tank 7 through the third air pipe 9, and the nitrogen is transported to the inside of the outer shell 2 through the third air pipe 9 to reduce the concentration of ethylene oxide. At the same time, the fan 20 is started, and then the fourth air pump 18 is started to transport the ethylene oxide at the lower part of the outer shell 2 to the upper side of the outer shell 2. After the sterilization is completed, the second air pump 8 is started to transport the nitrogen in the gas tank 7 through the third air pipe 9, and the nitrogen is transported to the inside of the outer shell 2 through the third air pipe 9 to reduce the concentration of ethylene oxide. The second gas pipeline 6 transports nitrogen to the first gas pipeline 5 to treat the ethylene oxide remaining in the first gas pipeline 5, starts the third air pump 10, discharges the ethylene oxide in the outer shell 2 to the exhaust gas processor 21 through the exhaust pipe 11 to treat the ethylene oxide, starts the pump on the fifth gas pipeline 13, transports the air in the second gas tank 12 to the spray pipe 15, and then sprays it through the spray port 16, and at the same time starts the first motor 14 to drive the spray pipe 15 to rotate, so as to clean the outer shell 2.

[0032] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0033] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0034] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An ethylene oxide sterilizer dosing device, comprising a first gas delivery pipe (5) for dosing the ethylene oxide sterilizer, characterized in that: The side of the first gas pipe (5) is fixedly connected to the outer shell (2), the upper side of the outer shell (2) is fixedly connected to a gas tank (7) filled with nitrogen, the side of the gas tank (7) is installed with a second air pump (8), the output end of the second air pump (8) is fixedly connected to a third gas pipe (9), the side of the third gas pipe (9) is connected to a second gas pipe (6) connected to the first gas pipe (5), the upper side of the outer shell (2) is fixedly connected to a third gas pump (10), and the upper side of the third gas pump (10) is connected to an exhaust pipe (11).

2. The ethylene oxide sterilizer dosing device according to claim 1, characterized in that: A first motor (14) is installed inside the outer shell (2), and a spray pipe (15) is fixedly connected to the output end of the first motor (14).

3. The ethylene oxide sterilizer dosing device according to claim 2, characterized in that: A plurality of spray ports (16) are installed on the side of the spray pipe (15), and a fifth air delivery pipe (13) is connected to the side of the spray pipe (15).

4. The ethylene oxide sterilizer dosing device according to claim 3, characterized in that: An end of the exhaust pipe (11) away from the third air pump (10) is connected to an exhaust gas processor (21) for processing ethylene oxide, and a side of the fifth air supply pipe (13) is connected to a second gas tank (12).

5. The ethylene oxide sterilizer dosing device according to claim 4, characterized in that: A fan (20) is installed inside the outer shell (2), and the end of the first air supply pipe (5) away from the outer shell (2) is connected to a first air pump (4).

6. The ethylene oxide sterilizer dosing device according to claim 5, characterized in that: The fixed end of the first air pump (4) is fixedly connected to an ethylene oxide storage tank (3), and the side of the outer shell (2) is connected to a fourth air supply pipe (19).

7. The ethylene oxide sterilizer dosing device according to claim 6, characterized in that: The side of the fourth air delivery pipe (19) is connected to a fourth air pump (18), and the lower side of the outer shell (2) is fixedly connected to a base (1).

Images