Microbial fuel cell liquid changing device

Abstract

The utility model relates to the technical field of microbial fuel cells, in particular to a liquid changing device for a microbial fuel cell. The utility model provides the liquid changing device for the microbial fuel cell, which can automatically change electrolyte in the anode chamber and the cathode chamber, is simple to operate, improves the accuracy of adding the electrolyte and improves the convenience of using the device. A liquid changing device of a microbial fuel cell comprises an anode chamber, a cathode chamber, an exchange membrane and the like, the right side of the anode chamber is connected with the cathode chamber, and the exchange membrane is connected between the anode chamber and the cathode chamber. The electrolyte in the liquid changing bottle is sucked into the liquid injection pipe through the water pump according to the scales on the liquid changing bottle and flows into the anode chamber and the cathode chamber, the water pump is closed after the electrolyte is sucked to the positions of the scales on the liquid changing bottle, and air is exhausted through the air exhaust pipe, so that the electrolyte in the anode chamber and the cathode chamber can be automatically changed, the operation is simple, and the efficiency is high. And the accuracy of adding the electrolyte is improved, and the convenience of using the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of microbial fuel cells, in particular to a liquid replacement device for a microbial fuel cell. Background Art

[0002] A microbial fuel cell is a device that uses microorganisms to directly convert chemical energy in organic matter into electrical energy. It is an environmentally friendly energy conversion technology with broad application prospects. Microbial fuel cell fluid replacement refers to replacing the liquid medium in the battery. This operation is usually performed to maintain the normal operation of the battery and optimize the growth environment and electrochemical performance of the microorganisms.

[0003] The existing method of changing the liquid in a microbial fuel cell is to manually wear personal protective equipment, then stop the operation of the fuel cell, then open the discharge valve to empty the old electrolyte, and then clean it. After the cleaning is completed, the electrolyte is added to the microbial fuel cell using a pump, and then the gas is exhausted. At present, the operation of changing the liquid in a microbial fuel cell is relatively cumbersome and requires manual assistance, which reduces the convenience of using the equipment.

[0004] Therefore, it is necessary to design a microbial fuel cell liquid replacement device that can automatically replace the electrolyte in the anode chamber and the cathode chamber, is simple to operate, improves the accuracy of adding electrolyte, and improves the convenience of using the device. Utility Model Content

[0005] In order to overcome the shortcomings that the current liquid replacement operation of microbial fuel cells is relatively troublesome and requires manual assistance, resulting in reduced convenience in using the equipment, the utility model provides a microbial fuel cell liquid replacement device that can automatically replace the electrolyte in the anode chamber and the cathode chamber, is simple to operate, improves the accuracy of adding electrolyte, and improves the convenience of using the device.

[0006] The technical scheme of the utility model is: a liquid replacement device for a microbial fuel cell, comprising an anode chamber, a cathode chamber, an exchange membrane, a wire, a resistor, a liquid replacement bottle, an aspirator, a liquid injection tube and a water pump, wherein the cathode chamber is connected to the right side of the anode chamber, the exchange membrane is connected between the anode chamber and the cathode chamber, the upper sides of the rear parts of the anode chamber and the cathode chamber are connected to the wires, the resistors are connected between the wires, the upper sides of the middle parts of the anode chamber and the cathode chamber are connected to the liquid injection tube, the lower sides of the front parts of the liquid injection tubes are connected to the liquid replacement bottles, the upper sides of the liquid replacement bottles are connected to the aspirators, and the liquid injection tubes are connected to the water pumps.

[0007] As a preferred technical solution of the utility model, scales are provided on the front side of the liquid exchange bottle.

[0008] As a preferred technical solution of the utility model, it also includes a drain pipe, and the lower front sides of the anode chamber and the cathode chamber are both connected to the drain pipe.

[0009] As a preferred technical solution of the utility model, it also includes an exhaust pipe, and the upper sides of the anode chamber and the cathode chamber are both connected to the exhaust pipe.

[0010] As an optimal technical solution of the utility model, it also includes a pH meter, a regulating tube and a one-way valve. The pH meter is connected to the upper middle side of the liquid exchange bottle, the regulating tube is connected to the upper side of the liquid exchange bottle, the regulating tube is located on the outside of the adjacent vacuum pump, and the one-way valve is rotatably connected to the regulating tube.

[0011] As an optimal technical solution of the utility model, it also includes a thermometer, a temperature control cylinder and a controller. The upper front side of the liquid exchange bottle is connected to a thermometer, the outer side of the liquid exchange bottle is connected to a temperature control cylinder, and the outer side of the temperature control cylinder is connected to a controller.

[0012] Beneficial effects: 1. The utility model sucks the electrolyte in the liquid exchange bottle into the injection tube through a water pump according to the scale on the liquid exchange bottle, and flows into the anode chamber and the cathode chamber. After the electrolyte reaches the position of the scale on the liquid exchange bottle, the water pump is turned off and exhaust is carried out through the exhaust pipe, so that the electrolyte in the anode chamber and the cathode chamber can be automatically replaced. The operation is simple, the accuracy of adding electrolyte is improved, and the convenience of using the device is improved.

[0013] 2. The utility model detects the electrolyte in the liquid exchange bottle by means of a thermometer. When the temperature is not suitable, the temperature can be adjusted by means of a controller to control the temperature of the temperature control cylinder, thereby adjusting the temperature of the electrolyte in the liquid exchange bottle so that the temperature is within a suitable range, thereby improving the activity of microorganisms and increasing the efficiency of electricity generation.

[0014] 3. The utility model detects the electrolyte in the liquid exchange bottle by means of a pH meter. When the detected pH value is not within the optimal range, the one-way valve can be turned to open, and then a neutralizing solvent is added to the liquid exchange from the regulating tube, thereby being able to adjust the pH value of the electrolyte in the liquid exchange bottle to ensure that the pH value of the electrolyte is maintained within the optimal range for microbial growth and electricity production, thereby promoting the activity of microorganisms and improving electricity production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the first three-dimensional structure of the utility model.

[0016] Figure 2 This is a schematic diagram of the second three-dimensional structure of the utility model.

[0017] Among them: 1-anode chamber, 2-cathode chamber, 3-exchange membrane, 4-drain pipe, 5-conducting wire, 6-resistance, 7-exhaust pipe, 8-liquid exchange bottle, 9-vacuum pump, 10-liquid injection pipe, 11-water pump, 12-PH meter, 13-regulating tube, 14-thermometer, 15-temperature control cylinder, 16-controller, 17-check valve. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the embodiments shown in the accompanying drawings.

[0019] A microbial fuel cell liquid replacement device, such as Figure 1 and Figure 2 As shown, it includes an anode chamber 1, a cathode chamber 2, an exchange membrane 3, a drain pipe 4, a wire 5, a resistor 6, an exhaust pipe 7, a liquid exchange bottle 8, an air extractor 9, a liquid injection pipe 10, a water pump 11, a pH meter 12, a regulating pipe 13, a thermometer 14, a temperature control cylinder 15, a controller 16 and a one-way valve 17. The cathode chamber 2 is connected to the right side of the anode chamber 1, and the exchange membrane 3 is connected between the anode chamber 1 and the cathode chamber 2. The front sides of the lower parts of the anode chamber 1 and the cathode chamber 2 are both connected to the drain pipe 4 for facilitating the discharge of waste liquid. The upper sides of the rear parts of the anode chamber 1 and the cathode chamber 2 are both connected to the wire 5, and the resistor 6 is connected between the wires 5. The upper sides of the anode chamber 1 and the cathode chamber 2 are both connected to the exhaust pipe 7 for facilitating the discharge of waste liquid. Gas, the upper middle parts of the anode chamber 1 and the cathode chamber 2 are connected with injection tubes 10, the lower front parts of the injection tubes 10 are connected with liquid exchange bottles 8, the front parts of the liquid exchange bottles 8 are provided with scales for observing the amount of liquid exchange, the upper parts of the liquid exchange bottles 8 are connected with vacuum pumps 9, the injection tubes 10 are connected with water pumps 11, the upper middle parts of the liquid exchange bottles 8 are connected with pH meters 12, the upper parts of the liquid exchange bottles 8 are connected with regulating tubes 13, the regulating tubes 13 are located on the outsides of the adjacent vacuum pumps 9, the upper front parts of the liquid exchange bottles 8 are connected with thermometers 14, the outer sides of the liquid exchange bottles 8 are connected with temperature control cylinders 15, the outer sides of the temperature control cylinders 15 are connected with controllers 16, and the regulating tubes 13 are rotatably connected with check valves 17.

[0020] When it is necessary to replace the liquid in the microbial fuel cell, the present device can be used and brought to the place where the liquid in the microbial fuel cell needs to be replaced. The anode chamber 1 and the cathode chamber 2 are separated by the exchange membrane 3, and then the cover on the drain pipe 4 is opened to allow the waste liquid in the anode chamber 1 and the cathode chamber 2 to flow out, and then the anode chamber 1 and the cathode chamber 2 are cleaned. After the cleaning is completed, the cover is closed, and then the electrolyte in the liquid replacement bottle 8 is tested by the pH meter 12. When the detected pH value is not within the optimal range, the one-way valve 17 can be turned to open, and then the neutralizing solvent can be added to the liquid replacement from the regulating tube 13. After the addition is completed, the one-way valve 17 is turned to close, so that the pH value of the electrolyte in the liquid replacement bottle 8 can be adjusted to ensure that the pH value of the electrolyte is maintained within the optimal range for microbial growth and power generation, promote the activity of microorganisms, and improve the power generation efficiency. Then, the pH value in the liquid replacement bottle 8 is measured by the thermometer 14. The electrolyte is tested. When the temperature is not suitable, the temperature control cylinder 15 can be controlled by the controller 16 to adjust the temperature, so that the temperature of the electrolyte in the liquid exchange bottle 8 can be adjusted to be within a suitable range, thereby improving the activity of microorganisms and increasing the efficiency of electricity generation. Subsequently, the gas in the liquid exchange bottle 8 is extracted through the vacuum pump 9, and then the water pump 11 is started through the controller 16. According to the scale on the liquid exchange bottle 8, the electrolyte in the liquid exchange bottle 8 is sucked into the injection tube 10 through the water pump 11, and flows into the anode chamber 1 and the cathode chamber 2. After the electrolyte reaches the scale position on the liquid exchange bottle 8, the water pump 11 is turned off, and the exhaust is carried out through the exhaust pipe 7, so that the electrolyte in the anode chamber 1 and the cathode chamber 2 can be automatically replaced. The operation is simple, the accuracy of adding electrolyte is improved, and the convenience of using the device is improved. Subsequently, it is connected to other equipment through the wire 5 and the resistor 6 for power supply. After the replacement is completed, the cover can be snapped into the exhaust pipe 7.

[0021] The technical principles of the embodiments of the present utility model are described above in combination with specific embodiments. These descriptions are only for explaining the principles of the embodiments of the present utility model, and cannot be interpreted in any way as limiting the protection scope of the embodiments of the present utility model. Based on the explanations here, technicians in this field can think of other specific implementation methods of the embodiments of the present utility model without creative work, and these methods will fall within the protection scope of the embodiments of the present utility model.

Claims

1. A liquid replacement device for a microbial fuel cell, characterized in that: The invention comprises an anode chamber (1), a cathode chamber (2), an exchange membrane (3), a wire (5), a resistor (6), a liquid exchange bottle (8), an air extractor (9), a liquid injection pipe (10) and a water pump (11). The cathode chamber (2) is connected to the right side of the anode chamber (1), the exchange membrane (3) is connected between the anode chamber (1) and the cathode chamber (2), the wire (5) is connected to the upper rear sides of the anode chamber (1) and the cathode chamber (2), the resistor (6) is connected between the wires (5), the liquid injection pipe (10) is connected to the upper middle sides of the anode chamber (1) and the cathode chamber (2), the liquid exchange bottle (8) is connected to the lower front side of the liquid injection pipe (10), the upper side of the liquid exchange bottle (8) is connected to the air extractor (9), and the liquid injection pipe (10) is connected to the water pump (11).

2. A liquid replacement device for a microbial fuel cell according to claim 1, characterized in that: The front side of the liquid exchange bottle (8) is provided with scales.

3. A liquid replacement device for a microbial fuel cell according to claim 2, characterized in that: It also includes a liquid drain pipe (4), and the lower front sides of the anode chamber (1) and the cathode chamber (2) are both connected to the liquid drain pipe (4).

4. A liquid replacement device for a microbial fuel cell as claimed in claim 3, characterized in that: It also includes an exhaust pipe (7), and the upper sides of the anode chamber (1) and the cathode chamber (2) are both connected to the exhaust pipe (7).

5. A liquid replacement device for a microbial fuel cell as claimed in claim 4, characterized in that: The apparatus further comprises a pH meter (12), a regulating tube (13) and a one-way valve (17); the pH meter (12) is connected to the upper middle side of the liquid exchange bottle (8); the regulating tube (13) is connected to the upper side of the liquid exchange bottle (8); the regulating tube (13) is located outside the adjacent air extractor (9); and the one-way valve (17) is rotatably connected to the regulating tube (13).

6. A liquid replacement device for a microbial fuel cell as claimed in claim 5, characterized in that: The device also comprises a thermometer (14), a temperature control cylinder (15) and a controller (16); the upper front side of the liquid exchange bottle (8) is connected to the thermometer (14); the outer side of the liquid exchange bottle (8) is connected to the temperature control cylinder (15); and the outer side of the temperature control cylinder (15) is connected to the controller (16).

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