Quantitative adding device for soil living microbial agent

Abstract

The utility model relates to the technical field of microorganism culture devices, and discloses a soil living microorganism bacterium agent quantitative adding device which comprises a culture box, a culture bottle placing frame is arranged in the culture box, and a microorganism culture bottle is arranged at the top of the culture bottle placing frame. According to the utility model, the incubator is arranged for sealing and shading, the heating piece and the refrigerating piece are respectively used for heating or refrigerating and are controlled by the control switch, so that the temperature in the incubator is kept stable, and stable culture and protection of microorganisms in cultured soil are facilitated; a timed drip irrigation emitter can flow a culture agent in a culture agent debugging box into a reagent receiving pipe in a timed and quantitative manner, automatic quantitative feeding is realized, a manual quantitative extrusion part is manually pressed and relaxed, manual feeding can be realized, the device can be subjected to shading, sealing protection and temperature control, the microorganism culture environment is stable and excellent, the experiment precision is improved, and the experiment efficiency is improved. Manual feeding and electric feeding are both considered, and operation and use are convenient.

Description

Technical Field

[0001] This utility model relates to the field of microbial culture device technology, and in particular to a device for quantitative addition of soil live microbial agents. Background Technology

[0002] As a crucial component of the alpine ecosystem, the peatlands of the Tibetan Plateau possess vast soil carbon pools, and their stability has a profound impact on the global carbon cycle. Analyzing the driving factors of organic carbon accumulation in these peatlands and elucidating the mechanisms of soil carbon pool stability are core scientific questions for maintaining plateau ecological security and enhancing carbon sequestration. In related research, the application of soil-active microbial agents is a key means of regulating the microbial community structure of peatlands and exploring microbial protection mechanisms, while quantitative application is a prerequisite for ensuring the accuracy of experimental data and clarifying the changing patterns of organic carbon pool components. Therefore, a quantitative application device for soil-active microbial agents has become an indispensable piece of equipment for conducting research on the carbon pool of plateau peatlands, and its performance directly affects the scientific validity and application value of the research conclusions.

[0003] In existing applications of quantitative dosing devices for live soil microorganisms, microbial cultivation experiments typically rely solely on culture bottles, lacking effective dustproof and sealing designs. Soil dust generated during operation and suspended particles from the external environment easily enter the storage silo, contaminating the microorganisms and reducing their purity. This can also clog the quantitative delivery channel, affecting dosing accuracy. In summer, under direct sunlight, the temperature of the device's outer shell and the storage silo rises rapidly. Live microorganisms are extremely sensitive to temperature; sustained high temperatures accelerate metabolic disorders and even death of microorganisms, significantly reducing their activity. The device's light-shielding, sealing, and temperature control capabilities are relatively poor, resulting in insufficient adaptability to different cultivation methods. Furthermore, quantitative dosing is usually done manually, failing to adequately balance manual and electric dosing, leading to poor usability, insufficient dosing accuracy, and inconvenience. Therefore, we propose a quantitative dosing device for live soil microorganisms to address these issues. Utility Model Content

[0004] In response to the problems raised, this utility model provides a soil live microbial agent quantitative dosing device to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A soil live microbial agent quantitative dosing device includes an incubator, the incubator being equipped with a culture bottle placement rack;

[0007] The top of the culture flask rack is equipped with microbial culture flasks. The interior of the incubator is equipped with a heating element, a cooling element, and a temperature detector. The top of each microbial culture flask is equipped with a closed cap, to which a reagent receiving tube and a venting tube are inserted. The top of the incubator is equipped with a culture medium adjustment box. The bottom of the culture medium adjustment box is equipped with a liquid guide tube connected to the reagent receiving tube, and a timed drip irrigation device is installed on the liquid guide tube. The bottom of the culture medium adjustment box is equipped with a manual dispensing tube connected to the reagent receiving tube, and a manual dispensing device is installed on the manual dispensing tube. Both the liquid guide tube and the manual dispensing tube are equipped with a switch valve. The top of the incubator is equipped with a control switch.

[0008] Preferably, the incubator is a sealed isolation box, and the front of the incubator is provided with a transparent observation window, with a light-blocking glass embedded in the middle of the transparent observation window.

[0009] Preferably, the culture flask rack is installed in a U-shape at the bottom of the incubator, and a blower fan is installed on the inner side of the culture flask rack, with the blower fan corresponding to the positions of the heating element and the cooling element respectively.

[0010] Preferably, the heating element is an electric heater, and the cooling element includes a refrigerant bottle, an electric control valve, and a flow guide copper tube. The refrigerant bottle is installed inside the incubator, the flow guide copper tube is installed at the output end of the refrigerant bottle, the electric control valve is installed at the end of the flow guide copper tube, and the other end of the flow guide copper tube extends out of the incubator. The control switch is electrically connected to the heating element, the electric control valve, the temperature detector, and the timed drip irrigation device, respectively.

[0011] Preferably, the closed cap is installed at the mouth of the microbial culture bottle, the top end of the reagent receiving tube extends through the incubator and is connected to the liquid delivery tube and the manual dosing tube, and a sealing rubber ring is installed at the top of the incubator and fitted onto the outside of the reagent receiving tube.

[0012] Preferably, the incubator is equipped with a storage battery on its side, which is used to power the heating element, cooling element, temperature detector, timed drip irrigation device and control switch.

[0013] Preferably, the timed drip irrigation device is a timed irrigation controller, the manual dosing tube and the liquid guide tube are both connected between the reagent receiving tube and the culture medium adjustment box, and the manual quantitative squeezing component includes a metering tube and a one-way valve port. The metering tube is connected to the manual dosing tube, and the one-way valve port is installed on the metering tube.

[0014] Preferably, the switching valve includes two electronic control valves and two manual control valves. The two electronic control valves are installed at both ends of the liquid guide tube, and the two manual control valves are respectively connected to both ends of the manual dosing tube. The control switch is electrically connected to the electronic control valves.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] 1. This soil-based live microbial agent quantitative dosing device features a culture bottle rack inside the incubator for easy placement of microbial culture bottles. The incubator is sealed to prevent external contamination. The enclosed chamber provides light and dust protection. Heating and cooling components operate independently. After the temperature is set by a control switch, the heating and cooling components are adjusted according to temperature changes to maintain a stable temperature inside the incubator. This facilitates the stable cultivation and protection of microorganisms in the soil. The device provides light protection, sealing, and temperature control, resulting in a stable and excellent microbial culture environment, thus improving experimental accuracy.

[0017] 2. This soil-based microbial inoculant quantitative dosing device features a culture medium adjustment box at the top of the incubator for convenient culture medium storage. The microbial culture bottle has a closed cap at the top, with a reagent receiving tube and a ventilation tube inserted into the cap. The ventilation tube allows for air exchange between the inside and outside of the culture bottle, facilitating microbial cultivation. A timed drip irrigation device guides the culture medium from the culture medium adjustment box to the liquid delivery tube at regular intervals and in precise quantities, finally introducing it into the microbial culture bottle through the reagent receiving tube, completing automated timed and quantitative dosing. A control switch provides automatic control, and multiple valves can control the opening and closing of the liquid delivery tube and the manual dosing tube respectively. For manual dosing, the dispensing and discharging device is manually pressed to quantitatively add the culture medium into the reagent receiving tube. This device can accommodate both manual and electric dosing, making it convenient to operate. Attached Figure Description

[0018] Figure 1 This is a formal three-dimensional schematic diagram of the soil active microbial agent quantitative dosing device proposed in this utility model;

[0019] Figure 2 This invention presents a frontal cross-sectional perspective view of a soil active microbial agent quantitative dosing device.

[0020] Figure 3 This invention provides a top-view perspective view of a soil microbial agent quantitative dosing device.

[0021] Figure 4 This is a three-dimensional schematic diagram of the connection structure between the closed bottle cap and the reagent receiving tube of this utility model;

[0022] Figure 5 This is a rear perspective three-dimensional schematic diagram of the connection structure between the refrigerant bottle and the electric control valve of this utility model.

[0023] In the diagram: 1. Incubator; 101. Transparent observation window; 102. Sealing rubber ring; 2. Culture flask rack; 201. Blower fan; 3. Microbial culture flask; 4. Heating element; 5. Cooling element; 501. Refrigerant bottle; 502. Electric control valve; 503. Flow guide copper tube; 6. Temperature detector; 7. Closed bottle cap; 8. Reagent receiving tube; 9. Culture medium test chamber; 10. Liquid delivery tube; 11. Timed drip irrigation device; 12. Manual dosing tube; 13. Manual metering extruder; 131. Metering tube; 132. One-way valve port; 14. Switch valve; 141. Electronic control valve; 142. Manual control valve; 15. Control switch; 16. Ventilation tube; 17. Storage battery. Detailed Implementation

[0024] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0026] Please see Figures 1-5 A soil live microbial agent quantitative dosing device includes an incubator 1, and an incubator 1 is equipped with an incubator bottle rack 2;

[0027] The top of the culture bottle rack 2 is equipped with microbial culture bottles 3. The interior of the incubator 1 is equipped with a heating element 4, a cooling element 5 and a temperature detector 6. The top of the microbial culture bottle 3 is equipped with a closed bottle cap 7. A reagent receiving tube 8 and a ventilation tube 16 are inserted into the closed bottle cap 7. The top of the incubator 1 is equipped with a culture medium adjustment box 9. The bottom of the culture medium adjustment box 9 is equipped with a liquid guide tube 10 connected to the reagent receiving tube 8. A timed drip irrigation device 11 is installed on the liquid guide tube 10. The bottom of the culture medium adjustment box 9 is equipped with a manual addition tube 12 connected to the reagent receiving tube 8. A manual quantitative squeezing device 13 is installed on the manual addition tube 12. Both the liquid guide tube 10 and the manual addition tube 12 are equipped with a switch valve 14. The top of the incubator 1 is equipped with a control switch 15.

[0028] The beneficial effects of this plan are:

[0029] By providing a culture bottle rack 2 inside the incubator 1, it is convenient to place microbial culture bottles 3. The incubator 1 can be sealed and isolated to prevent external contamination. The incubator 1 is a closed box that can block light and prevent dust. The heating element 4 and the cooling element 5 heat or cool respectively. After the temperature is set by the control switch 15, the heating element 4 and the cooling element 5 can be adjusted according to the temperature change to maintain a stable temperature inside the incubator 1, which is convenient for the stable cultivation and protection of microorganisms in the soil.

[0030] The top of the incubator 1 is equipped with a culture medium adjustment box 9 for easy storage of culture medium. The top of the microbial culture bottle 3 is equipped with a closed bottle cap 7, on which a reagent receiving tube 8 and a ventilation tube 16 are inserted. The ventilation tube 16 enables air exchange between the inside and outside of the culture bottle, facilitating microbial culture. The timed dripper 11 can guide the culture medium in the culture medium adjustment box 9 to the liquid delivery tube 10 at regular intervals and in quantitative amounts, and finally introduce it into the microbial culture bottle 3 through the reagent receiving tube 8, completing the automated timed and quantitative addition. The control switch 15 provides automatic control. Multiple switch valves 14 can control the opening and closing of the liquid delivery tube 10 and the manual addition tube 12 respectively. When adding manually, the manual quantitative extrusion piece 13 is pressed and released manually to add the culture medium quantitatively into the reagent receiving tube 8. The device can provide light protection, sealing protection, and temperature control, resulting in a stable and excellent microbial culture environment, improving experimental accuracy, and accommodating both manual and electric addition, making it convenient to operate.

[0031] Furthermore, the incubator 1 is a sealed isolation box, and a transparent observation window 101 is provided on the front of the incubator 1, with a light-blocking glass embedded in the middle of the transparent observation window 101;

[0032] Specifically, the incubator 1 is a sealed isolation box that can be closed for dust prevention and sun protection. The front of the incubator 1 is provided with a transparent observation window 101, which can be observed from the outside. The transparent observation window 101 is embedded with light-blocking glass in the middle, which can block light and seal the box while facilitating external observation and making it convenient to use.

[0033] Furthermore, the culture flask rack 2 is installed in a U-shape at the bottom of the incubator 1, and a blower fan 201 is installed on the inner side of the culture flask rack 2. The blower fan 201 corresponds to the positions of the heating element 4 and the cooling element 5 respectively.

[0034] Specifically, the culture flask rack 2 is installed in a U-shape at the bottom of the incubator 1, providing stable support. The inside of the culture flask rack 2 is equipped with a blower fan 201. Running the blower fan 201 can evenly blow the air inside the incubator 1. The blower fan 201 is positioned in relation to the heating element 4 and the cooling element 5, making it convenient to adjust the temperature. The blower fan 201 can be powered by the storage battery 17, making it easy to use.

[0035] Furthermore, the heating element 4 is an electric heater, and the cooling element 5 includes a refrigerant bottle 501, an electric control valve 502, and a flow guide copper pipe 503. The refrigerant bottle 501 is installed inside the incubator 1, the flow guide copper pipe 503 is installed at the output end of the refrigerant bottle 501, the electric control valve 502 is installed at the end of the flow guide copper pipe 503, and the other end of the flow guide copper pipe 503 extends out of the incubator 1. The control switch 15 is electrically connected to the heating element 4, the electric control valve 502, the temperature detector 6, and the timed drip irrigation device 11, respectively.

[0036] Specifically, the heating element 4 is an electric heater, which facilitates heating operations. The refrigerant in the refrigerant bottle 501 can be slowly released and discharged through the guide copper pipe 503. During the discharge process, the refrigerant continues to cool. The electric control valve 502 plays a role in flow and on / off control, keeping the cooling stable. The control switch 15 is electrically connected to the heating element 4, the electric control valve 502, the temperature detector 6, and the timed drip irrigation device 11. The temperature detector 6 can detect the real-time temperature. The control switch 15 controls the operation of the heating element 4 and the electric control valve 502 to maintain a constant temperature. The timed drip irrigation device 11 can be adjusted and controlled in terms of time and quantity, making the control operation convenient.

[0037] Furthermore, the closed bottle cap 7 is closed and installed at the mouth of the microbial culture bottle 3, the top end of the reagent receiving tube 8 extends through the incubator 1 and is connected to the liquid delivery tube 10 and the manual dosing tube 12, and a sealing rubber ring 102 is installed at the top of the incubator 1 and fitted onto the outside of the reagent receiving tube 8.

[0038] Specifically, the closed cap 7 is installed at the mouth of the microbial culture bottle 3, providing a good sealing effect. The top of the reagent receiving tube 8 is connected to the liquid delivery tube 10 and the manual addition tube 12, respectively, facilitating automatic or manual addition. The operation is convenient. Furthermore, the top of the incubator 1 is equipped with a sealing rubber ring 102, which can be used to seal the reagent receiving tube 8, preventing leakage at the connection between the incubator 1 and the reagent receiving tube 8, and ensuring stable operation.

[0039] Furthermore, the side of the incubator 1 is equipped with a storage battery 17, which is used to provide power to the heating element 4, the cooling element 5, the temperature detector 6, the timed drip irrigation device 11 and the control switch 15 respectively.

[0040] Specifically, the side of the incubator 1 is equipped with a storage battery 17, which allows the heating element 4, cooling element 5, temperature detector 6, timed drip irrigation device 11 and control switch 15 to be powered by the storage battery 17. This facilitates outdoor use, and microbial culture can be carried out directly on-site after the microbial soil is collected outdoors. The operation is convenient.

[0041] Furthermore, the timed drip irrigation device 11 is a timed irrigation controller. The manual dosing tube 12 and the liquid guide tube 10 are both connected between the reagent receiving tube 8 and the culture medium adjustment box 9. The manual quantitative squeezing component 13 includes a metering tube 131 and a one-way valve port 132. The metering tube 131 is connected to the manual dosing tube 12, and the one-way valve port 132 is installed on the metering tube 131.

[0042] Specifically, the timed drip irrigation device 11 is a timed irrigation controller, facilitating stable timed and quantitative dosing. The automated dosing is stable. The timed drip irrigation device 11 guides the culture medium into the liquid guide tube 10, and then injects it into the reagent receiving tube 8, completing the automated dosing. The manual quantitative dispensing component 13 includes a metering tube 131 and a one-way valve port 132. The metering tube 131 is installed on the side of the manual dosing tube 12. When manual quantitative dosing is required, the liquid guide tube 10 can be closed first by the switch valve 14, and then the manual dosing tube 12 can be closed. The bottom valve, when pressed, expands the metering tube 131, acting as an adsorption mechanism. The one-way valve 132 allows for one-way venting, facilitating the filling of the manual dosing tube 12 and the metering tube 131 with culture medium. After filling, the one-way valve 132 can be closed, and the metering tube 131 can be pressed again to quantitatively guide the culture medium in the metering tube 131 into the reagent receiving tube 8, completing the manual quantitative dosing. The metering tube 131 has a small set capacity, allowing for repeated quantitative additions. This facilitates adjusting the dosage according to experimental needs, making it convenient to use.

[0043] Furthermore, the switching valve 14 includes two electronic control valves 141 and two manual control valves 142. The two electronic control valves 141 are installed at both ends of the liquid guide tube 10, and the two manual control valves 142 are respectively connected to both ends of the manual dosing tube 12. The control switch 15 is electrically connected to the electronic control valves 141.

[0044] Specifically, the switching valve 14 includes two electronic control valves 141 and two manual control valves 142. The two electronic control valves 141 are installed at both ends of the liquid guide tube 10, and the control switch 15 is electrically connected to the electronic control valves 141. The control switch 15 can control the opening and closing of the electronic control valves 141, which facilitates automated switching adjustment. When manual addition is required, the electronic control valves 141 can be closed first, and the top manual control valves 142 can be opened to fill the manual addition tube 12 and the metering tube 131 with culture medium. Then, the top manual control valve 142 can be closed, and the bottom manual control valve 142 can be opened to quantitatively add the culture medium in the metering tube 131 into the reagent receiving tube 8. Repeating the above actions can add different culture media, making it convenient to use.

[0045] How to use and how to work this device:

[0046] By providing a culture bottle rack 2 inside the incubator 1, it is convenient to place microbial culture bottles 3. Fifty grams of pre-cultured soil are weighed and placed into the microbial culture bottle 3, and water is injected inside. The incubator 1 can be sealed and isolated to prevent external contamination and maintain the stable culture of microorganisms in the culture soil. The incubator 1 is a closed box that can protect the microbial culture bottle 3 from light and dust, thus maintaining a suitable environment during microbial culture. The incubator 1 is equipped with a heating element 4, a cooling element 5, and a temperature detector 6. The temperature detector 6 can perform stable monitoring. The heating element 4 and the cooling element 5 heat or cool respectively. After the temperature is set by the control switch 15, the heating element 4 and the cooling element 5 can be adjusted according to the temperature change to maintain a stable temperature inside the incubator 1, which is convenient for the culture and protection of microorganisms. It can provide light protection, sealing protection, and temperature control. The microbial culture environment is stable and excellent, which improves the accuracy of experiments.

[0047] The incubator 1 has a culture medium preparation box 9 on top for easy storage of culture medium. The microbial culture bottle 3 has a closed cap 7 on top, with a reagent receiving tube 8 and a ventilation tube 16 inserted into the cap 7. The ventilation tube 16 allows for air exchange within the incubator 1, facilitating microbial cultivation. A liquid guide tube 10 and a manual dosing tube 12 connect the culture medium preparation box 9 and the reagent receiving tube 8. A timed dripper 11 can guide the culture medium from the culture medium preparation box 9 to the liquid guide tube 10 at regular intervals and in precise quantities, and finally into the microbial culture bottle 3 through the reagent receiving tube 8, completing automated timed and precise dosing. The control switch 15 provides automatic control. Each switch valve 14 can control the opening and closing of the liquid delivery tube 10 and the manual dosing tube 12 respectively. When automatic quantitative dosing is required, the manual dosing tube 12 can be closed by the switch valve 14. When manual dosing is required, the liquid delivery tube 10 can be closed by the switch valve 14. Then, the culture medium in the manual quantitative squeezing part 13 is filled and then pressed to guide the flow into the reagent receiving tube 8 to complete the manual quantitative dosing. It is convenient to combine manual and electric dosing, has a wide range of applicability, and is easy to operate. The device can be protected from light, sealed, and temperature controlled. The microbial culture environment is stable and excellent, which improves the accuracy of experiments. It also combines manual and electric dosing and is easy to operate.

[0048] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A soil living microorganism agent quantitative dosing device, comprising a culture box (1), characterized in that: The incubator (1) is equipped with a culture bottle rack (2) inside; The top of the culture bottle rack (2) is provided with a microbial culture bottle (3). The inside of the incubator (1) is provided with a heating element (4), a cooling element (5) and a temperature detector (6). The top of the microbial culture bottle (3) is provided with a closed bottle cap (7). A reagent receiving tube (8) and a ventilation tube (16) are inserted into the closed bottle cap (7). The top of the incubator (1) is provided with a culture medium adjustment box (9). The bottom of the culture medium adjustment box (9) is provided with a liquid guide tube (10) connected to the reagent receiving tube (8). A timed drip irrigation device (11) is provided on the liquid guide tube (10). The bottom of the culture medium adjustment box (9) is provided with a manual addition tube (12) connected to the reagent receiving tube (8). A manual quantitative squeezing device (13) is provided on the manual addition tube (12). Both the liquid guide tube (10) and the manual addition tube (12) are provided with a switch valve (14). The top of the incubator (1) is provided with a control switch (15).

2. The soil viable microorganism agent dosing device according to claim 1, characterized in that: The incubator (1) is a sealed isolation box. The front of the incubator (1) is provided with a transparent observation window (101), and a light-blocking glass is embedded in the middle of the transparent observation window (101).

3. The soil viable microorganism agent dosing device according to claim 1, characterized in that: The culture bottle rack (2) is installed in a U-shape at the bottom of the incubator (1). A blower fan (201) is installed on the inner side of the culture bottle rack (2). The blower fan (201) corresponds to the heating element (4) and the cooling element (5) respectively.

4. The soil viable microorganism agent dosing device according to claim 1, characterized in that: The heating element (4) is an electric heater, and the cooling element (5) includes a refrigerant bottle (501), an electric control valve (502), and a flow guide copper tube (503). The refrigerant bottle (501) is installed inside the incubator (1), the flow guide copper tube (503) is installed at the output end of the refrigerant bottle (501), the electric control valve (502) is installed at the end of the flow guide copper tube (503), and the other end of the flow guide copper tube (503) extends out of the incubator (1). The control switch (15) is electrically connected to the heating element (4), the electric control valve (502), the temperature detector (6), and the timed drip irrigation device (11), respectively.

5. The soil viable microorganism agent dosing device according to claim 1, characterized in that: The closed bottle cap (7) is closed and installed at the mouth of the microbial culture bottle (3). The top end of the reagent receiving tube (8) extends through the incubator (1) and is connected to the liquid guide tube (10) and the manual dosing tube (12). The top end of the incubator (1) is fitted with a sealing rubber ring (102) that is sleeved on the outside of the reagent receiving tube (8).

6. The soil viable microorganism agent dosing device according to claim 1, characterized in that: The incubator (1) is equipped with a storage battery (17) on its side. The storage battery (17) is used to power the heating element (4), the cooling element (5), the temperature detector (6), the timed drip irrigation device (11), and the control switch (15).

7. The soil viable microbial inoculant dosing device of claim 1, wherein: The timing drip irrigation device (11) is a timing irrigation controller, the manual adding pipe (12) and the liquid guide pipe (10) are communicated between the reagent receiving pipe (8) and the culture agent adjusting box (9), the manual quantitative extruding piece (13) comprises a metering pipe (131) and a one-way valve port (132), the metering pipe (131) is connected to the manual adding pipe (12), and the one-way valve port (132) is installed on the metering pipe (131).

8. The soil viable microbial inoculant dosing device of claim 1, wherein: The switch valve (14) comprises two electronic control valves (141) and two manual control valves (142), the two electronic control valves (141) are installed at two ends of the liquid guide pipe (10), the two manual control valves (142) are connected with two ends of the manual adding pipe (12) respectively, and the control switch (15) is electrically connected with the electronic control valve (141).

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