Sterilization device for microbiological experimental apparatus

Abstract

The utility model discloses a sterilization device for a microbiological experiment instrument, which relates to the technical field of microbiological experiment instrument sterilization and comprises a main body, a humidifying device is arranged at the upper end of the middle of the main body, a sterilization device is arranged at the lower end of the humidifying device, a rotating device is arranged on the left side of the main body, and a handle is arranged in the middle of the main body. A supporting column is arranged at the lower end of the disinfection device, an opening and closing door is arranged at the lower end of the right side of the main body, an opening and closing knob is arranged at the lower end of the opening and closing door, and an opening and closing fan is arranged on one side of the opening and closing door. According to the device, the concentration of carbon dioxide in the second disinfection box is increased, bacteria cannot survive in a high-concentration carbon dioxide environment, the sterilization effect is achieved, microorganism experiment instruments can be effectively sterilized, and compared with traditional steam high-pressure sterilization, the sterilization time is short, the sterilization effect is better, meanwhile, secondary pollution can be avoided, and the safety is high. And the sterilization effect and the working efficiency of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sterilization of microbiological experimental instruments, in particular to a sterilization device for microbiological experimental instruments. Background Art

[0002] Microorganisms are a general term for a class of organisms, including bacteria, viruses, fungi, etc., covering many types of beneficial and harmful species, widely involved in food, medicine, industry and agriculture, environmental protection, sports and many other fields, and closely related to humans. They are tiny individuals and closely related to humans. When researchers conduct research experiments on microorganisms, they often need to use glass dishes and other experimental equipment to contain microorganisms. After each use of the experimental equipment, the staff needs to use a sterilization device to sterilize it to avoid affecting the next use. The following problems exist in the existing technology:

[0003] 1. The existing microbiological experimental equipment sterilization device takes a lot of time to sterilize the microbiological experimental equipment during use. The sterilization is not sufficient and the effect is poor, which affects the subsequent use of the device and reduces the working efficiency of the device.

[0004] 2. When using the existing microbiological experimental equipment sterilization device, multiple microbiological experimental equipment may be covered by each other when being disinfected and sterilized at the same time, resulting in poor sterilization effect of the device, insufficient sterilization, and reduced sterilization effect of the device. Utility Model Content

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A microbiological experimental equipment sterilization device comprises a main body, a humidifying device is arranged at the middle upper end of the main body, a disinfecting device is arranged at the lower end of the humidifying device, a rotating device is arranged on the left side of the main body, a handle is arranged in the middle of the main body, a supporting column is arranged at the lower end of the disinfecting device, an opening and closing door is arranged at the lower right end of the main body, a switch knob is arranged at the lower end of the opening and closing door, and an opening and closing fan is arranged on one side of the opening and closing door.

[0007] A further improvement of the technical solution of the utility model is that the rotating device includes a power motor, a rotating shaft is arranged on the right side of the power motor, a rotor is arranged on the right side of the rotating shaft, third connecting columns are arranged on both sides of the outer end of the rotating shaft, a first connecting column is arranged at one end of the third connecting column, a second connecting column is arranged in the middle of the first connecting column, a fourth connecting column is arranged on one side of the second connecting column, an extrusion spring is arranged inside the fourth connecting column, and an extrusion plate is arranged on one side of the fourth connecting column.

[0008] A further improvement of the technical solution of the utility model is that: the right side of the power motor is fixedly connected to the left side of the rotating shaft, the right side of the rotating shaft is movably connected to the left side of the rotor, the two sides of the outer end of the rotating shaft are fixedly connected to one end of the third connecting column, the middle part of the first connecting column is movably connected to the upper end of the second connecting column, and the two sides of the first connecting column are fixedly connected to one end of the third connecting column.

[0009] A further improvement of the technical solution of the utility model is that the humidifying device includes a first disinfection box, a disinfection water tank is arranged at the upper end of the first disinfection box, a water outlet is arranged at the right side of the lower end of the disinfection water tank, a water pipe is arranged at the lower end of the water outlet, a spray head is arranged at the lower end of the water pipe, and a valve is arranged on the right side of the water outlet.

[0010] A further improvement of the technical solution of the utility model is that the lower end of the disinfection water tank is fixedly connected to the upper end of the first disinfection box, and the lower end of the water pipe is fixedly connected to the upper end of the spray head.

[0011] A further improvement of the technical solution of the utility model is that the disinfection device includes a second disinfection box, a carbon dioxide gas cylinder is arranged on the right side of the second disinfection box, a fixing hole is arranged at the lower end of the carbon dioxide gas cylinder, a second ventilation pipe is arranged at the lower end of the fixing hole, a ventilation switch is arranged on the left side of the second ventilation pipe, a first ventilation pipe is arranged on the left side of the second ventilation pipe, and a ventilation hole is arranged at the upper end of the first ventilation pipe.

[0012] A further improvement of the technical solution of the utility model is that: the lower end of the carbon dioxide storage cylinder is connected to the upper end of the fixing hole by a pin, the lower end of the fixing hole is fixedly connected to the right side of the second ventilation pipe, the left side of the second ventilation pipe is fixedly connected to the right side of the first ventilation pipe, and the upper end of the first ventilation pipe is fixedly connected to the lower end of the ventilation hole.

[0013] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0014] 1. The utility model provides a microbiological experiment equipment sterilization device. Through the joint action of a power motor, a first connecting column, an extrusion spring, a second connecting column, a rotor, a third connecting column, a fourth connecting column, an extrusion plate and a rotating shaft, the device can drive the microbiological experiment equipment to rotate by rotating. When multiple microbiological experiment equipment are sterilized at the same time, it is ensured that the microbiological experiment equipment will not overlap and cover each other, which will affect the sterilization effect of the device. The device can fully sterilize the microbiological experiment equipment, thereby increasing the working efficiency and sterilization effect of the device. When the device sterilizes the microbiological experiment equipment, the power motor drives the rotating shaft on the left side of the rotor to rotate slowly, and the rotating shaft drives the third connecting column at its outer end. The third connecting column rotates around the rotating axis, and the first connecting column drives the first connecting column to rotate around the rotating axis. The second connecting column can rotate freely on the first connecting column. The fourth connecting column is fixed on one side of the second connecting column. An extrusion spring is fixed inside the fourth connecting column. The elasticity of the extrusion spring is utilized to pass through the extrusion plate to squeeze and fix the microbiological experiment instrument on both sides. The fourth connecting column drives the microbiological experiment instrument to rotate around the rotating axis. A plurality of third connecting columns are arranged around the rotating axis, so that the device can squeeze and fix each microbiological experiment instrument separately and sterilize at the same time, so that the device can fully sterilize and disinfect the microbiological experiment instrument, thereby increasing the working efficiency and sterilization effect of the device.

[0015] 2. The utility model provides a microbiological experiment equipment sterilization device. Through the joint action of a water pipe, a spray head, a disinfection water tank, a water outlet, a first disinfection box and a valve, the device can humidify and quickly sterilize the microbiological experiment equipment, ensure the storage environment of the microbiological experiment equipment, prevent damage to the microbiological experiment equipment, and affect the subsequent use of the microbiological experiment equipment, thereby increasing the functionality of the device. When the device needs to humidify the microbiological experiment equipment for storage, the valve is opened, and the disinfection water inside the disinfection water tank flows into the water pipe through the water outlet, and then is injected into the spray head through the water pipe, and then water mist is sprayed out through the spray head and drifts into the first disinfection box, thereby increasing the humidity inside the first disinfection box, ensuring the storage environment of the microbiological experiment equipment, preventing damage to the microbiological experiment equipment, and disinfecting the microbiological experiment equipment at the same time, thereby increasing the functionality of the device. The disinfection water tank stores disinfection water, and when it is injected into the first disinfection box, the sterile environment inside the first disinfection box is ensured, and bacteria in the first disinfection box are prevented from growing and damaging the microbiological experiment equipment, thereby increasing the storage effect and functionality of the device for microbiological experiment equipment.

[0016] 3. The utility model provides a sterilization device for microbiological experimental instruments. Through the joint action of a second disinfection box, a vent, a carbon dioxide gas cylinder, a first vent pipe, a vent switch, a second vent pipe and a fixed hole, the device increases the carbon dioxide concentration inside the second disinfection box, utilizing the fact that bacteria cannot survive in a high concentration of carbon dioxide environment, thereby achieving a sterilization effect and increasing the sterilization effect of the device. When the device needs to sterilize the microbiological experimental instruments, the carbon dioxide gas cylinder plug is connected to the fixed hole, so that the carbon dioxide inside the carbon dioxide gas cylinder can flow to the middle of the second vent pipe, and the vent switch is turned on to inject the carbon dioxide inside the second vent pipe into the first vent pipe and then into the second disinfection box through the vent, thereby increasing the carbon dioxide concentration inside the second disinfection box, so that bacteria cannot survive in a high concentration of carbon dioxide environment, thereby achieving a sterilization effect and being able to effectively sterilize the microbiological experimental instruments. Compared with traditional steam high-pressure sterilization, the sterilization time is short and the sterilization effect is better. At the same time, secondary pollution can be avoided, thereby increasing the sterilization effect and work efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the microbiological experimental equipment sterilization device of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the rotating device of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the humidifying device of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the disinfection device of the utility model.

[0021] In the figure: 1. main body; 2. rotating device; 3. humidifying device; 4. opening and closing fan; 5. supporting column; 6. disinfection device; 7. handle; 8. opening and closing door; 9. switch knob; 21. power motor; 22. first connecting column; 23. extrusion spring; 24. second connecting column; 25. rotor; 26. third connecting column; 27. fourth connecting column; 28. extrusion plate; 29. ​​rotating shaft; 31. water pipe; 32. spray head; 33. disinfection water tank; 34. water outlet; 35. first disinfection box; 36. valve; 61. second disinfection box; 62. vent; 63. carbon dioxide gas cylinder; 64. first ventilation pipe; 65. ventilation switch; 66. second ventilation pipe; 67. fixing hole. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the embodiments:

[0023] Example 1

[0024] like Figure 1-4As shown, the utility model provides a microbiological experimental equipment sterilization device, including a main body 1, a humidifying device 3 is arranged at the upper middle end of the main body 1, a disinfecting device 6 is arranged at the lower end of the humidifying device 3, a rotating device 2 is arranged on the left side of the main body 1, a handle 7 is arranged in the middle of the main body 1, a supporting column 5 is arranged at the lower end of the disinfecting device 6, an opening and closing door 8 is arranged at the lower right end of the main body 1, a switch knob 9 is arranged at the lower end of the opening and closing door 8, and an opening and closing fan 4 is arranged on one side of the opening and closing door 8.

[0025] Example 2

[0026] like Figure 1-4 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the rotating device 2 includes a power motor 21, a rotating shaft 29 is arranged on the right side of the power motor 21, a rotor 25 is arranged on the right side of the rotating shaft 29, third connecting columns 26 are arranged on both sides of the outer end of the rotating shaft 29, a first connecting column 22 is arranged on one end of the third connecting column 26, a second connecting column 24 is arranged in the middle of the first connecting column 22, a fourth connecting column 27 is arranged on one side of the second connecting column 24, an extrusion spring 23 is arranged inside the fourth connecting column 27, and an extrusion plate 28 is arranged on one side of the fourth connecting column 27, the right side of the power motor 21 is fixedly connected to the left side of the rotating shaft 29, the right side of the rotating shaft 29 is movably connected to the left side of the rotor 25, the outer end of the rotating shaft 29 is fixedly connected to one end of the third connecting column 26, the middle of the first connecting column 22 is movably connected to the upper end of the second connecting column 24, and the two sides of the first connecting column 22 are fixedly connected to one end of the third connecting column 26.

[0027] In this embodiment, the device can drive the microbiological experiment equipment to rotate by rotating. When multiple microbiological experiment equipment are sterilized at the same time, it is ensured that the microbiological experiment equipment will not overlap and cover each other, which will affect the sterilization effect of the device, so that the device can fully sterilize the microbiological experiment equipment, thereby increasing the working efficiency and sterilization effect of the device. When the device sterilizes the microbiological experiment equipment, the power motor 21 drives the rotating shaft 29 on the left side of the rotor 25 to rotate slowly, and the rotating shaft 29 drives the third connecting column 26 at its outer end to rotate around the rotating shaft 29, and the third connecting column 26 drives the first connecting column 22 to rotate around the rotating shaft 29, and the second connecting column 24 can The fourth connecting column 27 is fixed on one side of the second connecting column 24, and a squeezing spring 23 is fixed inside the fourth connecting column 27. The squeezing spring 23 is used to squeeze and fix the microbiological experiment instrument on both sides through the squeezing plate 28 by utilizing the elasticity of the squeezing spring 23. The fourth connecting column 27 drives the microbiological experiment instrument to rotate around the rotating shaft 29. A plurality of third connecting columns 26 are arranged around the rotating shaft 29, so that the device can squeeze and fix each microbiological experiment instrument separately and sterilize it at the same time, so that the device can fully sterilize and disinfect the microbiological experiment instrument, thereby increasing the working efficiency and sterilization effect of the device.

[0028] Example 3

[0029] like Figure 1-4 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the humidifying device 3 includes a first disinfection box 35, a disinfection water tank 33 is arranged at the upper end of the first disinfection box 35, a water port 34 is arranged on the right side of the lower end of the disinfection water tank 33, a water pipe 31 is arranged at the lower end of the water port 34, a spray head 32 is arranged at the lower end of the water pipe 31, a valve 36 is arranged on the right side of the water port 34, the lower end of the disinfection water tank 33 is fixedly connected to the upper end of the first disinfection box 35, and the lower end of the water pipe 31 is fixedly connected to the upper end of the spray head 32.

[0030] In this embodiment, the device can humidify and quickly sterilize the microbial experimental equipment, ensure the storage environment of the microbial experimental equipment, prevent damage to the microbial experimental equipment, and affect the subsequent use of the microbial experimental equipment, thereby increasing the functionality of the device. When the device needs to humidify the microbial experimental equipment for storage, the valve 36 is opened, and the disinfectant water inside the disinfectant water tank 33 flows into the water pipe 31 through the water port 34, and is injected into the spray head 32 through the water pipe 31, and then sprays water mist through the spray head 32, which drifts into the first disinfection box 35, increasing the humidity inside the first disinfection box 35, ensuring the storage environment of the microbial experimental equipment, preventing damage to the microbial experimental equipment, and disinfecting the microbial experimental equipment at the same time, thereby increasing the functionality of the device. The disinfectant water tank 33 stores disinfectant water, and when it is injected into the first disinfection box 35, it ensures the sterile environment inside the first disinfection box 35, preventing bacteria from growing in the first disinfection box 35 and damaging the microbial experimental equipment, thereby increasing the storage effect and functionality of the device for microbial experimental equipment.

[0031] Example 4

[0032] like Figure 1-4 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the disinfection device 6 includes a second disinfection box 61, a carbon dioxide gas cylinder 63 is arranged on the right side of the second disinfection box 61, a fixing hole 67 is arranged at the lower end of the carbon dioxide gas cylinder 63, a second ventilation pipe 66 is arranged at the lower end of the fixing hole 67, a ventilation switch 65 is arranged on the left side of the second ventilation pipe 66, a first ventilation pipe 64 is arranged on the left side of the second ventilation pipe 66, a ventilation hole 62 is arranged at the upper end of the first ventilation pipe 64, the lower end of the carbon dioxide gas cylinder 63 is connected with the upper end pin of the fixing hole 67, the lower end of the fixing hole 67 is fixedly connected with the right side of the second ventilation pipe 66, the left side of the second ventilation pipe 66 is fixedly connected with the right side of the first ventilation pipe 64, and the upper end of the first ventilation pipe 64 is fixedly connected with the lower end of the ventilation hole 62.

[0033] In the present embodiment, the device achieves a sterilization effect by increasing the carbon dioxide concentration inside the second disinfection box 61, taking advantage of the fact that bacteria cannot survive in a high concentration of carbon dioxide environment, thereby increasing the sterilization effect of the device. When the device needs to sterilize microbial experimental equipment, the carbon dioxide gas cylinder 63 is connected to the fixing hole 67 with a pin, so that the carbon dioxide inside the carbon dioxide gas cylinder 63 can flow to the middle of the second ventilation pipe 66, and the ventilation switch 65 is turned on to allow the carbon dioxide inside the second ventilation pipe 66 to be injected into the first ventilation pipe 64, and then injected into the second disinfection box 61 through the ventilation hole 62, thereby increasing the carbon dioxide concentration inside the second disinfection box 61. Bacteria cannot survive in a high concentration of carbon dioxide environment, thereby achieving a sterilization effect, and can effectively sterilize microbial experimental equipment. Compared with traditional steam high-pressure sterilization, the sterilization time is short and the sterilization effect is better. At the same time, secondary pollution can be avoided, thereby increasing the sterilization effect and work efficiency of the device.

[0034] The working principle of the microbiological experimental equipment sterilization device is described in detail below.

[0035] like Figure 1-4As shown, the device can drive the microbiological experiment equipment to rotate by rotating. When multiple microbiological experiment equipment are disinfected at the same time, it is ensured that the microbiological experiment equipment will not overlap or cover each other, which will affect the sterilization effect of the device, so that the device can fully sterilize the microbiological experiment equipment, thereby increasing the working efficiency and sterilization effect of the device. When the device sterilizes the microbiological experiment equipment, the power motor 21 drives the rotating shaft 29 on the left side of the rotor 25 to rotate slowly, and the rotating shaft 29 drives the third connecting column 26 at its outer end to rotate around the rotating shaft 29, and the third connecting column 26 drives the first connecting column 22 to rotate around the rotating shaft 29, and the second connecting column 24 can rotate freely on the first connecting column 22, and the fourth connecting column 27 is fixed on one side of the second connecting column 24. A squeezing spring 23 is fixed inside 27. The elasticity of the squeezing spring 23 is utilized to squeeze and fix the microbiological experiment equipment on both sides through the squeezing plate 28. The fourth connecting column 27 drives the microbiological experiment equipment to rotate around the rotating shaft 29. A plurality of third connecting columns 26 are arranged around the rotating shaft 29, so that the device can squeeze and fix each microbiological experiment equipment separately and sterilize at the same time, so that the device can fully sterilize and disinfect the microbiological experiment equipment, thereby increasing the working efficiency and sterilization effect of the device. The device can humidify and quickly sterilize the microbiological experiment equipment, ensure the storage environment of the microbiological experiment equipment, prevent damage to the microbiological experiment equipment, and affect the subsequent use of the microbiological experiment equipment, thereby increasing the functionality of the device. When the microbiological experiment equipment needs to be humidified for storage, the valve 36 is opened, and the disinfectant water in the disinfectant water tank 33 flows into the water pipe 31 through the water port 34, and is injected into the spray head 32 through the water pipe 31, and then sprays water mist through the spray head 32 and drifts into the first disinfection box 35, thereby increasing the humidity inside the first disinfection box 35, ensuring the storage environment of the microbiological experiment equipment, and preventing damage to the microbiological experiment equipment. At the same time, the microbiological experiment equipment is disinfected, thereby increasing the functionality of the device. The disinfectant water tank 33 stores disinfectant water, and when it is injected into the first disinfection box 35, the sterile environment inside the first disinfection box 35 is ensured, thereby preventing bacteria from growing in the first disinfection box 35 and damaging the microbiological experiment equipment, thereby increasing the functionality of the device. Storage effect and functionality of microbiological experimental equipment. The device increases the carbon dioxide concentration inside the second disinfection box 61, and uses the fact that bacteria cannot survive in a high concentration of carbon dioxide environment to achieve a sterilization effect, thereby increasing the sterilization effect of the device. When the device needs to sterilize the microbiological experimental equipment, the carbon dioxide gas storage cylinder 63 is connected to the fixing hole 67 with a pin, so that the carbon dioxide inside the carbon dioxide gas storage cylinder 63 can flow to the middle of the second ventilation pipe 66, and the ventilation switch 65 is turned on to inject the carbon dioxide inside the second ventilation pipe 66 into the first ventilation pipe 64, and then injected into the second disinfection box 61 through the ventilation hole 62, thereby increasing the carbon dioxide concentration inside the second disinfection box 61. Bacteria cannot survive in a high concentration of carbon dioxide environment, thereby achieving a sterilization effect.It can effectively sterilize microbial experimental equipment. Compared with traditional steam high-pressure sterilization, it has a shorter sterilization time and better sterilization effect. It can also avoid secondary contamination and increase the sterilization effect and work efficiency of the device.

[0036] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A microbiological experimental equipment sterilization device, comprising a main body (1), characterized in that: A humidifying device (3) is provided at the upper middle end of the main body (1), a disinfecting device (6) is provided at the lower end of the humidifying device (3), a rotating device (2) is provided on the left side of the main body (1), a handle (7) is provided in the middle of the main body (1), a supporting column (5) is provided at the lower end of the disinfecting device (6), an opening and closing door (8) is provided at the lower right end of the main body (1), a switch knob (9) is provided at the lower end of the opening and closing door (8), and an opening and closing fan (4) is provided on one side of the opening and closing door (8).

2. A microbiological experiment equipment sterilization device according to claim 1, characterized in that: The rotating device (2) comprises a power motor (21), a rotating shaft (29) is arranged on the right side of the power motor (21), a rotor (25) is arranged on the right side of the rotating shaft (29), third connecting columns (26) are arranged on both sides of the outer end of the rotating shaft (29), a first connecting column (22) is arranged at one end of the third connecting column (26), a second connecting column (24) is arranged in the middle of the first connecting column (22), a fourth connecting column (27) is arranged on one side of the second connecting column (24), an extrusion spring (23) is arranged inside the fourth connecting column (27), and an extrusion plate (28) is arranged on one side of the fourth connecting column (27).

3. A microbiological experiment equipment sterilization device according to claim 2, characterized in that: The right side of the power motor (21) is fixedly connected to the left side of the rotating shaft (29), the right side of the rotating shaft (29) is movably connected to the left side of the rotor (25), the outer ends of the rotating shaft (29) are fixedly connected to one end of the third connecting column (26), the middle part of the first connecting column (22) is movably connected to the upper end of the second connecting column (24), and the two sides of the first connecting column (22) are fixedly connected to one end of the third connecting column (26).

4. A microbiological experiment equipment sterilization device according to claim 1, characterized in that: The humidifying device (3) comprises a first disinfection box (35), a disinfection water tank (33) is arranged at the upper end of the first disinfection box (35), a water outlet (34) is arranged on the right side of the lower end of the disinfection water tank (33), a water pipe (31) is arranged at the lower end of the water outlet (34), a spray head (32) is arranged at the lower end of the water pipe (31), and a valve (36) is arranged on the right side of the water outlet (34).

5. A microbiological experiment equipment sterilization device according to claim 4, characterized in that: The lower end of the disinfection water tank (33) is fixedly connected to the upper end of the first disinfection tank (35), and the lower end of the water pipe (31) is fixedly connected to the upper end of the spray head (32).

6. A microbiological experiment equipment sterilization device according to claim 1, characterized in that: The disinfection device (6) comprises a second disinfection box (61), a carbon dioxide gas storage cylinder (63) is arranged on the right side of the second disinfection box (61), a fixing hole (67) is arranged at the lower end of the carbon dioxide gas storage cylinder (63), a second ventilation pipe (66) is arranged at the lower end of the fixing hole (67), a ventilation switch (65) is arranged on the left side of the second ventilation pipe (66), a first ventilation pipe (64) is arranged on the left side of the second ventilation pipe (66), and a ventilation hole (62) is arranged at the upper end of the first ventilation pipe (64).

7. A microbiological experiment equipment sterilization device according to claim 6, characterized in that: The lower end of the carbon dioxide storage cylinder (63) is connected to the upper end of the fixing hole (67) by a bolt, the lower end of the fixing hole (67) is fixedly connected to the right side of the second ventilation pipe (66), the left side of the second ventilation pipe (66) is fixedly connected to the right side of the first ventilation pipe (64), and the upper end of the first ventilation pipe (64) is fixedly connected to the lower end of the ventilation hole (62).

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