Sterilization equipment for microbial culture

Abstract

The invention provides sterilization equipment for microbial culture, and relates to the field of microbial culture, the sterilization equipment comprises a sterilization box, an input joint is arranged on the shell wall above the sterilization box, a box door is mounted and connected at the front side position of the sterilization box, a perspective window is arranged on the box door, and a rear water tank is arranged at the rear position of the sterilization box. Heat generated by the built-in electric heating piece and the electric heating rod piece is fully distributed and utilized, it is ensured that liquid can be rapidly converted into high-temperature steam when making contact with the outer contact rail plate, meanwhile, excessive liquid is subjected to secondary evaporation treatment through the arc-shaped winding rail, the evaporation efficiency is greatly improved, and the energy consumption is reduced. Sufficient high-temperature steam can be quickly generated for sterilizing the microbial culture apparatus; the outer contact rail plate is driven by the adjusting shaft to intermittently and alternately rotate to the position over the receiving hopper shell, it is guaranteed that the surface heat of the outer contact rail plate rotating to the normal position is in a standard state all the time, and the problem that the evaporation effect is poor due to continuous work of a single heating piece is effectively solved.

Description

Technical Field

[0001] The present invention relates to the field of microorganism culture, and particularly to a sterilization device for microorganism culture. Background Art

[0002] In the field of microorganism culture, sterilization is a crucial step, which is directly related to the accuracy and reliability of microorganism experiments, as well as the quality and safety of biological products. Traditional sterilization devices for microorganism culture often have various limitations.

[0003] On the one hand, during the steam generation process, uneven heat distribution is a common problem. Many devices rely on a single heating method or a simple heating structure, resulting in heat concentrating in local areas and unable to evenly heat the liquid for evaporation. This not only reduces the steam generation efficiency, prolongs the sterilization time required, but also may cause waste of energy due to local overheating, increasing the operating cost of the device.

[0004] On the other hand, as the sterilization process continues, the continuous operation of the heating component will cause the surface temperature to change, thereby leading to unstable and gradually weakening evaporation effects. This situation makes it difficult to maintain the steam generation amount and quality at a stable level, unable to meet the requirements of efficient and stable sterilization, having an adverse impact on the sterilization effect of microorganism culture utensils, and may cause incomplete sterilization, increasing the risk of microorganism contamination and affecting the success rate of microorganism culture experiments and biological product production.

[0005] In addition, the traditional sterilization device also does not make full and intelligent use of water resources. During the steam generation process, the excess liquid is usually directly discharged or simply collected, and the liquid initially preheated fails to be effectively re-evaporated, not only causing waste of water resources, but also weakening the water vapor evaporation efficiency to a certain extent, resulting in a relatively long sterilization time for the sterilization device.

[0006] Therefore, it is necessary to provide a new sterilization device for microorganism culture to solve the above technical problems. Summary of the Invention

[0007] To solve the above technical problems, the present invention provides a sterilization device for microorganism culture.

[0008] A sterilization device for microorganism culture provided by the present invention includes: a sterilization box, an input joint is provided on the upper shell wall of the sterilization box, a box door is installed and connected at the front side position of the sterilization box, a perspective window is provided on the box door, a rear water tank is provided at the rear position of the sterilization box, a water filling port is provided on the upper box wall of the rear water tank, a steam barrel is fixedly connected to the side wall of the sterilization box, a pump body is provided at the lower end position of the steam barrel, a connecting pipe is fixedly connected to the liquid outlet end of the pump body, an output joint is provided on the top barrel wall of the steam barrel, and a horizontal pipe is connected between the output joint and the input joint; a high-efficiency evaporation mechanism, the high-efficiency evaporation mechanism includes a spray head, the spray head is provided at the upper position of the steam barrel, the other end of the connecting pipe is connected to the spray head, a regulating shaft is rotatably connected to the upper barrel wall of the steam barrel, a rotating port is provided at one end of the spray head, the regulating shaft is rotatably connected to one end of the spray head, a central cavity is fixedly connected to the lower end position of the regulating shaft, a plurality of outer contact rail plates are provided on the side wall of the central cavity, an internal electric heating element is provided inside the central cavity, the internal electric heating element is connected to the plurality of outer contact rail plates, and a slow-flow winding component is provided inside the steam barrel.

[0009] Preferably, the plurality of outer contact rail plates are arranged in an equidistant annular shape, and a plurality of leakage holes are provided on each of the plurality of outer contact rail plates.

[0010] Preferably, the slow-flow winding component includes a main cylinder shell, the main cylinder shell is provided at the lower position of an outer contact rail plate, an arc-shaped winding rail is provided on the outer wall of the main cylinder shell, and a discharge pipe is provided at the lowermost position of the arc-shaped winding rail.

[0011] Preferably, an electric heating rod is installed and connected inside the main cylinder shell, a plurality of distribution fins are equidistantly provided on the electric heating rod, and the plurality of distribution fins are all connected to the inner wall of the main cylinder shell.

[0012] Preferably, a receiving hopper shell is provided at the upper position of the main cylinder shell, the inner wall of the receiving hopper shell is arranged to be unidirectionally inclined, one end of the receiving hopper shell is provided with a shell opening, the shell opening is provided above the arc-shaped winding rail, a motor is installed and connected at the top end of the steam barrel, and a toothed disc is installed and connected to the output end of the motor and the regulating shaft respectively, and the two toothed discs are meshed with each other.

[0013] Preferably, a transfer shell is installed and connected at the water inlet end of the pump body, two water distribution pipes are symmetrically provided on the transfer shell, water valves are installed and connected inside the two water distribution pipes respectively, valve rods are provided on the two water valves respectively, a switching component is provided between the two valve rods, one water distribution pipe is connected to the rear water tank through a first liquid pipe, and the other water distribution pipe is connected to the lower barrel wall of the steam barrel through a second liquid pipe.

[0014] Preferably, the switching component includes two gears, the two gears are respectively fixedly connected to two valve rods, racks are arranged on one sides of the two gears, one ends of the two racks are jointly connected with a cross bar, two limiting rods are symmetrically arranged on the outer wall of the transfer housing, two ends of the cross bar are respectively slidably connected to the two limiting rods, an electric cylinder is installed and connected at the middle position of the side wall of the transfer housing, and the telescopic end of the electric cylinder is fixedly connected to the middle position of the cross bar.

[0015] Preferably, a viewing port is arranged at the lower position of the steam barrel, a glass window is installed and connected at the viewing port, a support plate is installed and connected outside the viewing port, a vision sensor is installed and connected at the top end position of the support plate, a built-in rod is fixedly connected inside the steam barrel, a floating plate is slidably connected to the built-in rod, and a limiting disc is installed and connected at the top end of the built-in rod.

[0016] Compared with the related art, a sterilization device for microorganism culture provided by the present invention has the following beneficial effects:

[0017] 1. By fully distributing and utilizing the heat generated by the built-in heating element and the heating rod member, the present invention ensures that the liquid can be quickly converted into high-temperature steam when contacting the outer contact rail plate. At the same time, the arc-shaped winding rail is used to perform secondary evaporation treatment on the excess liquid, greatly improving the evaporation efficiency, making the heat energy be efficiently utilized, reducing the energy consumption, being able to quickly generate sufficient high-temperature steam for sterilizing the microorganism culture utensils, and improving the sterilization efficiency and effect;

[0018] 2. By adopting a motor to drive the gears and the adjusting shaft, the outer contact rail plate is intermittently and alternately rotated to the position directly above the receiving hopper shell, ensuring that the surface temperature of the outer contact rail plate rotated to the correct position is always in the standard state, effectively solving the problem of the weakening of the evaporation effect caused by the continuous operation of a single heating element, ensuring that the water sprayed by the nozzle can be continuously, stably and fully evaporated into high-temperature steam, providing a stable and reliable steam supply for the sterilization process, and improving the stability and continuity of the sterilization operation;

[0019] 3. Through the arc-shaped winding rail with a descending track, the excess accumulated water can be conveyed to the lower end of the steam barrel, enabling the floating plate to slide and move upward stably relative to the built-in rod. When the accumulated water is sufficient, the vision sensor on the support plate detects that the liquid level position is relatively high. By using the accumulated water detection system composed of the equipped vision sensor and the floating plate, the accumulated water condition in the steam barrel can be monitored in real time. When the accumulated water reaches a certain amount, the water inlet end can be automatically switched;

[0020] 4. In the present invention, the telescopic end of the electric cylinder drives the cross bar to slide relative to the two limit rods, so that the two racks drive the two gears to drive the two valve rods to rotate in the opposite direction at the same time. The two valve rods control the two water valves to open and close alternately, so that the water inlet end of the pump body changes accordingly. One of the water distribution pipes connected to the lower end of the steam barrel serves as a new water inlet source to provide water inlet, realizing the circulating reflux and efficient evaporation again of the excess stored water in the steam barrel, making full use of water resources, avoiding waste of water resources, reducing the equipment operation cost, and at the same time ensuring the continuous generation of steam to meet the sterilization requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of a preferred embodiment provided by the present invention;

[0022] Figure 2 is Figure 1 the schematic internal structure diagram of the steam barrel shown;

[0023] Figure 3 is Figure 2 the schematic structural diagram of the high-efficiency evaporation mechanism shown;

[0024] Figure 4 is Figure 3 the schematic structural diagram of the main cylinder shell shown;

[0025] Figure 5 is Figure 1 the schematic structural diagram of the position A shown;

[0026] Figure 6 is Figure 5 the schematic structural diagram of the position C shown;

[0027] Figure 7 is Figure 2 the schematic structural diagram of the position B shown.

[0028] Reference numerals in the drawings: 1, sterilization box; 11, input joint; 2, box door; 21, perspective window; 3, rear water tank; 31, water filling port; 4, steam barrel; 41, pump body; 411, connecting pipe; 42, output joint; 5, nozzle; 51, adjusting shaft; 52, middle cavity; 521, outer contact rail plate; 522, built-in electric heating element; 523, leakage hole; 53, main cylinder shell; 531, discharge pipe; 532, electric heating rod member; 533, distribution fin; 54, arc-shaped rail; 55, receiving hopper shell; 6, motor; 61, toothed disc; 7, transfer shell; 71, water distribution pipe; 72, water valve; 721, valve rod; 73, gear; 74, rack; 75, cross bar; 76, limit rod; 77, electric cylinder; 8, support plate; 81, visual sensor; 82, built-in rod; 83, floating plate; 84, limit disc. DETAILED DESCRIPTION OF THE INVENTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] Please refer to Figures 1 to 7 , a sterilization device for microorganism culture includes: a sterilization box 1, an input joint 11 is provided on the upper shell wall of the sterilization box 1, a box door 2 is installed and connected at the front side position of the sterilization box 1, a perspective window 21 is provided on the box door 2, a rear water tank 3 is provided at the rear position of the sterilization box 1, a water filling port 31 is provided on the upper box wall of the rear water tank 3, a steam barrel 4 is fixedly connected to the side wall of the sterilization box 1, a pump body 41 is provided at the lower end position of the steam barrel 4, a connecting pipe 411 is fixedly connected to the liquid outlet end of the pump body 41, an output joint 42 is provided on the top barrel wall of the steam barrel 4, and a horizontal pipe is connected between the output joint 42 and the input joint 11; a high-efficiency evaporation mechanism, the high-efficiency evaporation mechanism includes a spray head 5, the spray head 5 is provided above the steam barrel 4, the other end of the connecting pipe 411 is connected to the spray head 5, a regulating shaft 51 is rotatably connected to the upper barrel wall of the steam barrel 4, a rotating port is provided at one end of the spray head 5, the regulating shaft 51 is rotatably connected to one end of the spray head 5, a middle cavity 52 is fixedly connected to the lower end position of the regulating shaft 51, a plurality of outer contact rail plates 521 are provided on the side wall of the middle cavity 52, an internal electric heating element 522 is provided inside the middle cavity 52, the internal electric heating element 522 is connected to the plurality of outer contact rail plates 521, and a slow-flow winding component is provided inside the steam barrel 4.

[0031] In the specific implementation process, as Figure 2 and Figure 3 shown, the plurality of outer contact rail plates 521 are arranged in an equidistant annular shape, and a plurality of leakage holes 523 are provided on each of the plurality of outer contact rail plates 521.

[0032] It should be noted that: when the liquid is sprayed onto an outer contact rail plate 521, the liquid in uniform contact with the outer contact rail plate 521 is quickly evaporated into high-temperature steam, and the excess liquid quickly flows out through the plurality of leakage holes 523 on the outer contact rail plate 521, effectively avoiding the rapid accumulation of excess liquid, so that the liquid can be efficiently converted into high-temperature steam for output;

[0033] The alternately rotating outer contact rail plates 521 can ensure that the heat on their surfaces always remains in a standard state, and can also further promote the water sprayed from the spray head 5 to be fully evaporated into high-temperature steam.

[0034] Referring to Figure 4 shown, the slow-flow winding component includes a main cylinder shell 53, the main cylinder shell 53 is provided below an outer contact rail plate 521, an arc-shaped winding rail 54 is provided on the outer wall of the main cylinder shell 53, and a discharge pipe 531 is provided at the lowermost position of the arc-shaped winding rail 54.

[0035] It should be noted that: The excess water flowing out through the multiple leakage holes 523 on the outer contact rail plate 521 then falls into the receiving hopper shell 55, and then is conveyed through the shell opening into the upper track of the arc-shaped winding rail 54. The circulating flowing water then slowly and evenly flows down through the track in the arc-shaped winding rail 54;

[0036] The heat on the arc-shaped winding rail 54 causes the slowly flowing water to be evaporated again, so that the excess liquid can be further evaporated.

[0037] Reference Figure 3 and Figure 4 As shown in the reference and, an electric heating rod 532 is installed and connected inside the main cylinder shell 53. A plurality of distributed fins 533 are equidistantly arranged on the electric heating rod 532, and the plurality of distributed fins 533 are all connected to the inner wall of the main cylinder shell 53.

[0038] It should be noted that: The heat on the electric heating rod 532 is transferred to the arc-shaped winding rail 54 outside the main cylinder shell 53 through the multiple distributed fins 533.

[0039] Reference Figure 2 and Figure 3 As shown in the reference and, a receiving hopper shell 55 is provided at the upper position of the main cylinder shell 53. The inner wall of the receiving hopper shell 55 is arranged to be unidirectionally inclined. One end of the receiving hopper shell 55 is provided with a shell opening, and the shell opening is arranged above the arc-shaped winding rail 54. A motor 6 is installed and connected to the top end of the steam barrel 4. Tooth discs 61 are installed and connected to the output end of the motor 6 and the adjusting shaft 51 respectively, and the two tooth discs 61 are meshed with each other.

[0040] It should be noted that: Start the motor 6 to drive the tooth disc 61 at its output end to rotate, and drive the other tooth disc 61 meshed with it to drive the adjusting shaft 51 to rotate intermittently, so that the multiple outer contact rail plates 521 alternately rotate to the position directly above the receiving hopper shell 55;

[0041] The alternately rotating outer contact rail plates 521 can ensure that the heat on their surfaces always remains in a standard state, and can also further promote the water sprayed from the nozzle 5 to be fully evaporated into high-temperature steam, which helps to avoid the problem of weakened evaporation effect caused by the continuous operation of a single heating element.

[0042] Reference Figure 1 and Figure 5 As shown in the reference and, a transfer shell 7 is installed and connected to the water inlet end of the pump body 41. Two water distribution pipes 71 are symmetrically arranged on the transfer shell 7. Water valves 72 are installed and connected inside the two water distribution pipes 71. Valve rods 721 are provided on the two water valves 72. A switching assembly is provided between the two valve rods 721. One water distribution pipe 71 is connected to the rear water tank 3 through a first liquid pipe, and the other water distribution pipe 71 is connected to the lower barrel wall of the steam barrel 4 through a second liquid pipe.

[0043] It should be noted that: the reverse rotation of the two valve stems 721 drives the two water valves 72 to open and close alternately, so that the water inlet end of the pump body 41 changes accordingly, that is, the water inlet end is switched between the position below the rear water tank 3 and the steam drum 4.

[0044] Refer to Figure 5 and Figure 6 As shown, the switching component includes two gears 73, the two gears 73 are respectively fixedly connected to the two valve stems 721, racks 74 are arranged on one side of the two gears 73, one ends of the two racks 74 are jointly connected with a cross bar 75, two limiting rods 76 are symmetrically arranged on the outer wall of the transfer housing 7, and the two ends of the cross bar 75 are respectively slidably connected to the two limiting rods 76. An electric cylinder 77 is installed and connected at the middle position of the side wall of the transfer housing 7, and the telescopic end of the electric cylinder 77 is fixedly connected to the middle position of the cross bar 75.

[0045] It should be noted that: controlling the telescopic end of the electric cylinder 77 to drive the cross bar 75 to slide relative to the two limiting rods 76, so that the cross bar 75 drives the two racks 74 to move accordingly, driving the two gears 73 to drive the two valve stems 721 to rotate in the opposite direction at the same time. The reverse rotation of the two valve stems 721 drives the two water valves 72 to open and close alternately, so that the water inlet end of the pump body 41 changes accordingly;

[0046] One of the water pipes 71 connected to the lower end of the steam drum 4 serves as a new water inlet source to supply water to the pump body 41, so that the stored water inside the steam drum 4 can circulate back, and the excess stored water can be further and efficiently converted into high-temperature steam for output.

[0047] Refer to Figure 2 and Figure 7 As shown, an inspection port is provided at the lower position of the steam drum 4, a glass window is installed and connected at the inspection port, a support plate 8 is installed and connected outside the inspection port, a vision sensor 81 is installed and connected at the top position of the support plate 8, an internal rod 82 is fixedly connected inside the steam drum 4, a floating plate 83 is slidably connected to the internal rod 82, and a limit disk 84 is installed and connected at the top position of the internal rod 82.

[0048] It should be noted that: the excess liquid is transported through the track of the arc-shaped track 54 to the lower end of the steam drum 4, so that the floating plate 83 slides and moves upward stably relative to the internal rod 82. When the accumulated water is sufficient, the floating plate 83 floats up into the inspection port;

[0049] The vision sensor 81 on the support plate 8 detects that the liquid level position is relatively high, which is convenient for subsequent switching of the water inlet end, so that the excess stored water can be utilized more efficiently.

[0050] The working principle of a sterilization device for microorganism culture provided by the present invention is as follows: Control the built-in electric heating element 522 and the electric heating rod 532 to work to generate heat. The heat on the built-in electric heating element 522 is evenly dispersed to a plurality of outer contact track plates 521. The heat on the electric heating rod 532 is transferred to the arc-shaped winding track 54 outside the main cylinder shell 53 through a plurality of distributed fins 533. Start the pump body 41 to make the water stored in the rear water tank 3 be transported to the nozzle 5 through the first liquid pipe and sprayed out. When the liquid is sprayed onto an outer contact track plate 521, the liquid in uniform contact with the outer contact track plate 521 quickly evaporates into high-temperature steam, and the excess liquid quickly flows out through a plurality of leakage holes 523 on the outer contact track plate 521, effectively avoiding the rapid accumulation of excess liquid and enabling the liquid to be efficiently converted into high-temperature steam for output.

[0051] Start the motor 6 so that its output end drives the gear disk 61 to rotate, driving another gear disk 61 meshing with it to drive the adjusting shaft 51 to rotate intermittently, so that a plurality of outer contact track plates 521 alternately rotate to the position directly above the receiving hopper shell 55. The alternately rotating outer contact track plates 521 can ensure that the heat on their surfaces always remains in a standard state, and can further promote the water sprayed from the nozzle 5 to be fully evaporated into high-temperature steam, effectively avoiding the problem of weakened evaporation effect caused by continuous operation of a single heating element.

[0052] The excess water flowing out through the plurality of leakage holes 523 on the outer contact track plate 521 then falls into the receiving hopper shell 55, and then is transported into the upper track of the arc-shaped winding track 54 through the shell opening. The circulating and winding water then slowly flows down evenly through the track in the arc-shaped winding track 54. The heat on the arc-shaped winding track 54 causes the slowly flowing water to be evaporated again, enabling the excess liquid to be further evaporated, ensuring that the extracted stored water can be evaporated efficiently for the second time and enabling it to be quickly converted into high-temperature steam for output.

[0053] The excess liquid is transported to the lower end of the steam barrel 4 through the track of the arc-shaped winding track 54, causing the floating plate 83 to slide and move upward stably relative to the built-in rod 82. When the accumulated water is sufficient, the visual sensor 81 on the support plate 8 detects that the liquid level is relatively high, facilitating subsequent switching of the water inlet end and enabling more efficient utilization of the excess stored water.

[0054] Control the telescopic end of the electric cylinder 77 to drive the cross bar 75 to slide relative to the two limit rods 76, so that the cross bar 75 drives the two racks 74 to move accordingly, and drives the two valve rods 721 to rotate reversely simultaneously by the two gears 73. The reverse rotation of the two valve rods 721 drives the two water valves 72 to open and close alternately, so that the water inlet end of the pump body 41 is changed accordingly. One water distribution pipe 71 connected to the lower end of the steam barrel 4 serves as a new water inlet source to supply water to the pump body 41, so that the stored water inside the steam barrel 4 can circulate and flow back, so that the excess stored water can be further and efficiently converted into high-temperature steam output, ensuring that the stored water can be quickly converted into steam and transported to the inside of the sterilization box 1 to sterilize the utensils for microorganism culture.

[0055] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A sterilization device for microbial culture, characterized in that: include: A sterilization box (1), wherein an input connector (11) is provided on the upper shell wall of the sterilization box (1), a box door (2) is installed and connected at the front side of the sterilization box (1), and a perspective window (21) is provided on the box door (2), a rear water tank (3) is provided at the rear position of the sterilization box (1), and a water inlet (31) is provided on the upper box wall of the rear water tank (3), a steam barrel (4) is fixedly connected to the side wall of the sterilization box (1), a pump body (41) is provided at the lower end of the steam barrel (4), and a connecting pipe (411) is fixedly connected to the liquid outlet end of the pump body (41), an output connector (42) is provided on the top barrel wall of the steam barrel (4), and a transverse pipe is connected between the output connector (42) and the input connector (11); A high-efficiency evaporation mechanism, the high-efficiency evaporation mechanism comprising a nozzle (5), the nozzle (5) being arranged at an upper position of a steam barrel (4), the other end of the connecting pipe (411) being connected to the nozzle (5), an adjusting shaft (51) being rotatably connected to the upper barrel wall of the steam barrel (4), one end of the nozzle (5) being provided with a swivel, the adjusting shaft (51) being rotatably connected to one end of the nozzle (5), a central cavity (52) being fixedly connected at the lower end of the adjusting shaft (51), a plurality of outer contact rail plates (521) being arranged on the side wall of the central cavity (52), a built-in electric heating element (522) being arranged inside the central cavity (52), the built-in electric heating element (522) being connected to the plurality of outer contact rail plates (521), and a slow-flow rewinding component being arranged inside the steam barrel (4).

2. A sterilization device for microbial cultivation according to claim 1, characterized in that: The plurality of outer contact track plates (521) are arranged in an equidistant ring shape, and the plurality of outer contact track plates (521) are each provided with a plurality of leakage holes (523).

3. A sterilization device for microbial cultivation according to claim 1, characterized in that: The slow-flow rewinding assembly comprises a main cylinder shell (53), the main cylinder shell (53) being arranged below an outer track plate (521), an arc-shaped track (54) being arranged on the outer wall of the main cylinder shell (53), and a discharge pipe (531) being arranged at the lowermost end of the arc-shaped track (54).

4. A sterilization device for microbial cultivation according to claim 3, characterized in that: An electric heating rod (532) is installed and connected inside the main cylinder shell (53), and a plurality of distribution fins (533) are equidistantly arranged on the electric heating rod (532), and the plurality of distribution fins (533) are all connected to the inner wall of the main cylinder shell (53).

5. A sterilization device for microbial cultivation according to claim 4, characterized in that: A receiving bucket shell (55) is provided above the main cylinder shell (53), the inner wall of the receiving bucket shell (55) is unidirectionally inclined, one end of the receiving bucket shell (55) is provided with a shell opening, and the shell opening is arranged above the arc-shaped orbit (54). A motor (6) is installed and connected at the top of the steam barrel (4), and a toothed disc (61) is installed and connected on the output end of the motor (6) and the adjusting shaft (51), and the two toothed discs (61) are meshed with each other.

6. A sterilization device for microbial cultivation according to claim 1, characterized in that: A transfer shell (7) is installed and connected at the water inlet end of the pump body (41), and two water distribution pipes (71) are symmetrically arranged on the transfer shell (7). Water valves (72) are installed and connected inside the two water distribution pipes (71), and valve stems (721) are arranged on the two water valves (72). A switching component is arranged between the two valve stems (721). One of the water distribution pipes (71) is connected to the rear water tank (3) through a first liquid pipe, and the other water distribution pipe (71) is connected to the lower barrel wall of the steam barrel (4) through a second liquid pipe.

7. A sterilization device for microbial cultivation according to claim 6, characterized in that: The switching assembly comprises two gears (73), the two gears (73) are respectively fixedly connected to the two valve stems (721), a rack (74) is provided on one side of the two gears (73), one end of the two racks (74) is commonly connected to a cross bar (75), two limit rods (76) are symmetrically provided on the outer wall of the intermediate transfer shell (7), the two ends of the cross bar (75) are respectively slidably connected to the two limit rods (76), an electric cylinder (77) is installed and connected at the middle position of the side wall of the intermediate transfer shell (7), and the telescopic end of the electric cylinder (77) is fixedly connected to the middle position of the cross bar (75).

8. A sterilization device for microbial cultivation according to claim 1, characterized in that: An inspection port is provided at a lower position of the steam barrel (4), a glass window is installed and connected to the inspection port, a support plate (8) is installed and connected to the outside of the inspection port, a visual sensor (81) is installed and connected to the top position of the support plate (8), an internal built-in rod (82) is fixedly connected to the inside of the steam barrel (4), a floating plate (83) is slidably connected to the internal built-in rod (82), and a limit plate (84) is installed and connected to the top position of the internal built-in rod (82).

Images