Multifunctional device for detecting degradation performance of biodegradable material

Abstract

The utility model relates to a multifunctional device for detecting the degradation performance of a biodegradable material, which is characterized in that a gas supply device is connected with a shunt pipe through a pipeline, and each gas pipe of the shunt pipe is connected with a mass flow controller; a gas outlet of the mass flow controller is connected with a gas inlet of a reaction bottle in the constant temperature device through a gas inlet formed in the top of the constant temperature device, a valve is arranged on the gas inlet, and a gas outlet of the reaction bottle is connected with a water-gas separator through a gas pipe and a gas outlet formed in the top of the constant temperature device; the water-gas separator is connected with a gas inlet of the electromagnetic valve through a gas pipe, the electromagnetic valve is provided with three gas outlets which are respectively connected with the gas collector, the gas detection module and the emptying pipeline, and a gas outlet of the gas collector is connected with the gas detection module through a second electromagnetic valve through a pipeline. The utility model has the advantages of reasonable design and simple and reliable structure. And the detection requirements of the aerobic and anaerobic degradation performance of the biodegradable material can be tested.

Description

Technical Field

[0001] The utility model relates to the field of biodegradable material degradation performance detection, in particular to a multifunctional biodegradable material degradation performance detection device. Background Art

[0002] Biodegradable plastics are roughly divided into two types: aerobic and anaerobic. Most existing detection devices have a single function, and aerobic and anaerobic degradation detection are two completely different sets of equipment. In addition, even if it is aerobic, it cannot simultaneously meet the two different environmental requirements of 58±2℃ high temperature for industrial composting and 25±5℃ low temperature for home composting. In order to solve the difficulties in the above-mentioned existing biodegradable material degradation performance detection, the utility model provides a multifunctional biodegradable material degradation performance detection device. Utility Model Content

[0003] The purpose of the utility model is to provide a multifunctional biodegradable material degradation performance detection device, so as to solve the problem that the previous detection devices have a single function and cannot meet the comprehensive degradation performance detection requirements.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a multifunctional biodegradable material degradation performance detection device, comprising: a gas supply device (1), a constant temperature device (2), a gas collector (10), a gas detection module (12), and a PLC control module (7), characterized in that: the gas supply device (1) is connected to a shunt pipe (5) by a pipeline, each gas pipe of the shunt pipe (5) is connected to a mass flow controller (6), and the gas outlet of the mass flow controller (6) is connected to the gas inlet (4) inside the constant temperature device (2) through the gas inlet (4) arranged at the top of the constant temperature device (2). The air inlet of the reaction bottle (3) is provided with a valve on the air inlet (4). The air outlet of the reaction bottle (3) is connected to the water-gas separator (8) through the air pipe through the air outlet (14) provided on the top of the thermostat (2). The water-gas separator (8) is connected to the air inlet of the solenoid valve (9) through the air pipe. The solenoid valve (9) has at least three air outlets, which are respectively connected to the gas collector (10), the gas detection module (12), and the exhaust pipeline (11). The air outlet of the gas collector (10) is connected to the gas detection module (12) through the pipeline through the second solenoid valve (15). The thermostat (2) is a high and low temperature box, and the temperature accuracy meets ±1°C, and the range is at least 20~60°C. The thermostat (2) is arranged in multiple layers, and each layer can hold a plurality of reaction bottles (3). The diverter (5) has at least 9 outlets. The mass flow controller (6) has a flow control range of at least 0-200mL / min. The gas collector (10) is a gas collection bag with a volume of not less than 200 mL. The gas detection module (12) comprises at least: an online detection module for the concentrations of three gases: carbon dioxide, methane and oxygen, and is provided with a vacuum pump (13).

[0005] The advantages of the utility model are:

[0006] The utility model has reasonable design, simple and reliable structure, and can not only test the aerobic degradation performance of biodegradable materials, but also meet the requirements of anaerobic degradation performance testing, thus solving the problem that the previous testing devices have a single function and cannot meet the requirements of all-round degradation performance testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the overall structure of the utility model. DETAILED DESCRIPTION

[0008] The following specific examples further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0009] The figure shows a multifunctional biodegradable material degradation performance detection device, comprising: a gas supply device (1), a constant temperature device (2), a gas collector (10), a gas detection module (12), and a PLC control module (7), characterized in that: the gas supply device (1) is connected to a shunt pipe (5) by a pipeline, each gas pipe of the shunt pipe (5) is connected to a mass flow controller (6), and the gas outlet of the mass flow controller (6) is connected to the gas inlet of a reaction bottle (3) in the constant temperature device (2) through a gas inlet (4) arranged at the top of the constant temperature device (2). The air inlet (4) is provided with a valve. The air outlet of the reaction bottle (3) is connected to the water-gas separator (8) through the air pipe through the air outlet (14) provided on the top of the thermostat (2). The water-gas separator (8) is connected to the air inlet of the solenoid valve (9) through the air pipe. The solenoid valve (9) has at least three air outlets, which are respectively connected to the gas collector (10), the gas detection module (12), and the exhaust pipeline (11). The air outlet of the gas collector (10) is connected to the gas detection module (12) through the pipeline through the second solenoid valve (15). The thermostat (2) is a high and low temperature box, and the temperature accuracy meets ±1°C and the range is at least 20-60°C. The thermostat (2) is arranged in multiple layers, and each layer can hold a number of reaction bottles (3). The diverter (5) has at least 9 outlets. The mass flow controller (6) has a flow control range of at least 0-200mL / min. The gas collector (10) is a gas collection bag, and the volume is not less than 200mL. The gas detection module (12) at least comprises: an online detection module for the concentrations of three gases, carbon dioxide, methane and oxygen, and is provided with an air pump (13). During an aerobic test, the carbon dioxide and oxygen detection modules are used for measurement and conversion; during an anaerobic test, the carbon dioxide and methane detection modules are used for measurement and conversion.

[0010] Example 1

[0011] See attached Figure 1During the aerobic degradation test: the gas supply device 1 is divided into 36 air flows through the shunt pipe 5, and connected to the mass flow controller 6 through the air pipe; the mass flow controller 6 has a flow rate of 100 mL / min, and the gas outlet is connected to the gas inlet of the constant temperature device 2 for gas supply; the constant temperature device 2 is a high and low temperature box, the temperature accuracy meets ±1°C, the range is at least 20~60°C, and the control temperature is 25°C; there are 3 layers, 12 reaction bottles 3 are placed on each layer, and 36 inlets and outlets are set on the top of the layer, and the inlet is provided with a valve, which is opened during the aerobic degradation test, and It is interconnected with the air inlet of the reaction bottle 3; the air outlet of the reaction bottle is connected to the air outlet on the top of the layer through the air pipe, and the air outlet is interconnected with the air inlet of the water-gas separator 8; the air outlet of the water-gas separator 8 is interconnected with the air inlet of the solenoid valve 9 through the air pipe; when the carbon dioxide concentration is detected, the PLC module 7 controls the air outlet of the solenoid valve to be interconnected with the air inlet of the gas detection module 12, and is interconnected with the exhaust pipeline 11 when not detecting, and the vacuum pump is stopped; the gas detection module 12 will obtain the carbon dioxide concentration generated by aerobic degradation, and convert it to obtain the mass.

[0012] During anaerobic determination: the gas supply device 1 is turned off, and the temperature of the thermostat 2 is controlled to be 52°C; the thermostat 2 is arranged in 3 layers, 12 reaction bottles are placed on each layer, and 36 air inlets and outlets are arranged on the top of the layer, and the air inlet is provided with a valve, which is closed during anaerobic degradation determination and is interconnected with the air inlet of the reaction bottle 3; the air outlet of the reaction bottle 3 is connected to the air outlet on the top of the layer through an air pipe, and the air outlet is interconnected with the air inlet of the water-gas separator 8; the air outlet of the water-gas separator 8 is interconnected with the air inlet of the solenoid valve 9 through an air pipe; The PLC module 7 controls the gas outlet of the solenoid valve 9 to be connected to the gas inlet of the gas collector 10; the gas outlet of the gas collector 10 is connected to the second solenoid valve 15 through the air pipe; the second solenoid valve 15 has a gas outlet, which is connected to the gas inlet of the gas detection module 12 through the air pipe, and the second solenoid valve 15 is closed when not measuring and opened when measuring; the PLC control module 7 can set the time to control the opening and closing of the two solenoid valves, as well as the operation of the air pump 13 in the gas detection module 12. The PLC control module 7 can realize automatic intermittent extraction of gas in the gas collector 10 and measurement, and then obtain the accurate total amount of biogas through conversion.

Claims

1. A multifunctional device for detecting the degradation performance of biodegradable materials, comprising: A gas supply device (1), a thermostat (2), a gas collector (10), a gas detection module (12), and a PLC control module (7), characterized in that: the gas supply device (1) is connected to a shunt pipe (5) by a pipeline, each gas pipe of the shunt pipe (5) is connected to a mass flow controller (6), the gas outlet of the mass flow controller (6) is connected to the gas inlet of a reaction bottle (3) in the thermostat (2) through a gas inlet (4) arranged at the top of the thermostat (2), and a valve is arranged on the gas inlet (4). The gas outlet of the reaction bottle (3) is connected to the water-gas separator (8) through the gas outlet (14) arranged on the top of the constant temperature device (2) via the gas pipe. The water-gas separator (8) is connected to the gas inlet of the solenoid valve (9) via the gas pipe. The solenoid valve (9) has at least three gas outlets, which are respectively connected to the gas collector (10), the gas detection module (12), and the exhaust pipeline (11). The gas outlet of the gas collector (10) is connected to the gas detection module (12) via the pipeline through the second solenoid valve (15).

2. The multifunctional biodegradable material degradation performance detection device according to claim 1 is characterized in that: The constant temperature device (2) is a high and low temperature box, the temperature accuracy meets ±1°C, and the range is at least 20-60°C. The constant temperature device (2) is arranged in multiple layers, and each layer can hold a number of reaction bottles (3).

3. The multifunctional biodegradable material degradation performance detection device according to claim 1 is characterized in that: The diverter pipe (5) has at least 9 outlets.

4. The multifunctional biodegradable material degradation performance detection device according to claim 1, characterized in that: The mass flow controller (6) has a flow control range of at least 0-200 mL / min.

5. The multifunctional biodegradable material degradation performance detection device according to claim 1, characterized in that: The gas collector (10) is a gas collection bag with a volume of not less than 200 mL.

6. The multifunctional biodegradable material degradation performance detection device according to claim 1, characterized in that: The gas detection module (12) comprises at least: an online detection module for the concentrations of three gases: carbon dioxide, methane and oxygen, and is provided with an air extraction pump (13).

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