CN216571586U - Air generator for evaporative light scattering detector - Google Patents
Air generator for evaporative light scattering detector Download PDFInfo
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- CN216571586U CN216571586U CN202123304007.7U CN202123304007U CN216571586U CN 216571586 U CN216571586 U CN 216571586U CN 202123304007 U CN202123304007 U CN 202123304007U CN 216571586 U CN216571586 U CN 216571586U
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Abstract
The utility model belongs to the technical field of analytical instrument, concretely relates to air generator for evaporative light scattering detector. The utility model discloses a set up the operating time of MCU control compressor, the working power supply of control compressor is opened and close to make the suggestion of reporting to the police, prevent that the compressor from damaging, all flowing back valves can all be controlled by MCU simultaneously. In addition, pressure in the main gas holder receives pressure switch's response, whether lets in the pressure of the gaseous promotion jar body through the control compressor, when pressure in the main gas holder is higher, compressed air vapor can condense into water, further detach the water among the compressed air, cooperation one-level, second grade condensation dehydrating unit, reinforce the dewatering effect, can replace allochroic silica gel completely, also need not frequent change to when practicing thrift the detection cost, compromise the stability of idle air supply.
Description
Technical Field
The utility model belongs to the technical field of analytical instrument, concretely relates to air generator for evaporative light scattering detector.
Background
The air generator purifies natural air, removes moisture, oil stain and impurities in the air, and conveys the air to an application instrument through a compressor. In the working process of the evaporative light scattering detector, inert gas is needed to be used for atomizing a detection sample and a circulating phase, and the cost is too high by using pure nitrogen as an inert gas source, so that an air generator can be selected to filter and remove oxygen from natural air as the inert gas source. The existing air generator for the evaporative light scattering detector uses a refrigerator compressor as a power source for compressing air, has the advantages of small sound, no vibration, low cost and no maintenance, but is easy to damage after continuous long-time work, so that the air generator needs to be frequently replaced, and in addition, a water removal mechanism is allochroic silica gel and also needs to be frequently replaced, so that the detection cost is greatly increased; meanwhile, frequent replacement of parts greatly influences the air tightness of the system, so that the stability of the inert gas source is influenced.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned deficiencies of the prior art, the utility model provides an air generator for evaporating light scattering detector, the purpose is to use the refrigerator compressor as the power supply of compressed air in order to solve the air generator for evaporating light scattering detector now, and it is easy to damage to last long-time work to need frequent change, dewatering mechanism is allochroic silica gel, also needs frequent change, makes the detection cost greatly increased; meanwhile, the frequent replacement of parts greatly influences the air tightness of the system, thereby influencing the stability of the inert gas source.
The utility model provides an air generator for evaporation light scattering detector, specific technical scheme is as follows:
an air generator for evaporating light scattering detector, including compressor, one-level condensation dehydrating unit, main gas holder, second grade condensation dehydrating unit, vice gas holder and the oxygen filter that communicates in proper order, the compressor is connected with the MCU electricity, the top intercommunication of main gas holder has the trachea, the trachea is equipped with pressure switch, pressure switch electricity is connected the compressor, the bottom of one-level condensation dehydrating unit, main gas holder, second grade condensation dehydrating unit, vice gas holder all is equipped with the flowing back valve, MCU all with the flowing back valve electricity of one-level condensation dehydrating unit, main gas holder, second grade condensation dehydrating unit, vice gas holder is connected.
In some embodiments, the primary condensing and dehumidifying device and the secondary condensing and dehumidifying device are identical in structure.
Furthermore, the first-stage condensation dehumidifying device comprises a semiconductor refrigeration sheet, a circuitous and bent condensation pipe is fixed on the semiconductor refrigeration sheet, the bottom end of the condensation pipe is bent and communicated with the liquid discharge valve, and the semiconductor refrigeration sheet is electrically connected with the MCU.
In some embodiments, the pipeline between the secondary condensation and dehumidification device and the secondary air storage tank is provided with an adjustable pressure reducing valve. The adjustable pressure reducing valve is matched with the auxiliary air storage tank, so that air pressure fluctuation of the air outlet can be effectively reduced.
In certain embodiments, the secondary air reservoir has a smaller volume than the primary air reservoir. The auxiliary gas storage tank is equivalent to a pressure buffer tank and is used for ensuring the stable pressure of gas delivered by the compressor.
In some embodiments, a temperature return temperature controller is connected between the auxiliary gas storage tank and the oxygen filter, the temperature return temperature controller includes a semiconductor temperature control sheet, a circuitous and bent heat exchange tube is fixed on the semiconductor temperature control sheet, and the semiconductor temperature control sheet is electrically connected with the MCU.
In certain embodiments, the oxygen filter is filled with molecular sieves or activated carbon.
In some embodiments, the inlet pipeline of the main gas storage tank is provided with an initial pressure gauge, and the outlet of the oxygen filter is provided with a gas outlet pressure gauge.
The utility model discloses following beneficial effect has: the utility model provides a special controllable air generator of evaporation light scattering detector, through the operating time who sets up MCU control compressor, the working power supply of control compressor is opened and close to make the suggestion of reporting to the police, prevent that the compressor from damaging, all flowing back valves can all be controlled by MCU simultaneously. In addition, pressure in the main gas holder receives pressure switch's response, whether lets in the pressure of the gaseous promotion jar body through the control compressor, when pressure in the main gas holder is higher, compressed air vapor can condense into water, further detach the water among the compressed air, cooperation one-level, second grade condensation dehydrating unit, reinforce the dewatering effect, can replace allochroic silica gel completely, also need not frequent change to when practicing thrift the detection cost, compromise the stability of idle air supply.
Drawings
Fig. 1 is a schematic structural view of an air generator for an evaporative light scattering detector according to embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a primary condensation dehumidifier and a secondary condensation dehumidifier in embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of a temperature return controller in embodiment 1 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings.
Example 1
The air generator for the evaporative light scattering detector provided by the embodiment has the following specific technical scheme:
as shown in fig. 1, an air generator for evaporating light scattering detector, including the compressor 1 that communicates in proper order, one-level condensation dehydrating unit 2, main gas holder 3, second grade condensation dehydrating unit 4, vice gas holder 5 and oxygen filter 6, compressor 1 is connected with the MCU electricity, main gas holder 3's top intercommunication has trachea 31, trachea 31 is equipped with pressure switch 7, pressure switch 7 electricity is connected compressor 1, one-level condensation dehydrating unit 2, main gas holder 3, second grade condensation dehydrating unit 4, the bottom of vice gas holder 5 all is equipped with flowing back valve 8, MCU all with one-level condensation dehydrating unit 2, main gas holder 3, second grade condensation dehydrating unit 4, the flowing back valve 8 electricity of vice gas holder 5 is connected. The MCU (in the embodiment, the MCU model is stm32f103ve) judges whether abnormal gas consumption or leakage exists or not by monitoring the working time of the compressor 1, and if the compressor 1 works continuously twice and exceeds the set time, the working power supply of the compressor 1 is disconnected, an alarm prompt is given, and the compressor 1 is prevented from being damaged. The pressure switch 7 (in this embodiment, the model of the pressure switch 7 is ISA39D) senses the pressure value in the tank body through the air pipe 31 above the main air storage tank 3, when the pressure in the main air storage tank 3 is low, the compressor 1 is controlled to start working, the main air storage tank 3 is inflated to raise the pressure, the pressure in the main air storage tank 3 is high, the compressed air vapor can be condensed into water, and the water in the compressed air is further removed. The pressure switch 7 can independently control all the liquid discharge valves 8 (the primary condensation dehumidification device 2, the main gas storage tank 3, the secondary condensation dehumidification device 4 and the auxiliary gas storage tank 5) to be controlled by the MCU, and can set the periodic liquid discharge time. The first-stage condensation dehumidifying device 2 and the second-stage condensation dehumidifying device 4 can completely replace allochroic silica gel to achieve a good dewatering effect.
In this embodiment, the primary condensation dehumidifying apparatus 2 and the secondary condensation dehumidifying apparatus 4 have the same structure. As shown in fig. 2, the first-stage condensation dehumidifying device 2 includes a semiconductor refrigeration sheet 21, a circuitous and bent condensation pipe 22 is fixed on the semiconductor refrigeration sheet 21, a bent position at the bottom end of the condensation pipe 22 is communicated with the drain valve 8, and the semiconductor refrigeration sheet 21 is electrically connected with the MCU. Similarly, the second-stage condensation and dehumidification device 4 has the same structure, the temperature of the semiconductor refrigeration sheet 21 is low, and when air passes through the condensation pipe 22, water vapor is condensed into liquid and collected to the drain valve 8 at the low position for discharge. The MCU controls the temperature of the semiconductor refrigeration chip 21.
In this embodiment, the pipelines of the secondary condensation and dehumidification device 4 and the secondary air storage tank 5 are provided with an adjustable pressure reducing valve 9. The adjustable pressure reducing valve 9 is matched with the auxiliary air storage tank 5, so that air pressure fluctuation of an air outlet can be effectively reduced.
In this embodiment, the volume of the sub tank 5 is smaller than that of the main tank 3. The auxiliary gas tank 5 is equivalent to a pressure buffer tank and is used for ensuring the stable pressure of the gas delivered by the compressor 1.
In this embodiment, a temperature return temperature controller 10 is connected between the auxiliary gas tank 5 and the oxygen filter 6, as shown in fig. 3, the temperature return temperature controller 10 includes a semiconductor temperature control sheet 101, a meandering heat exchange tube 102 is fixed on the semiconductor temperature control sheet 101, and the semiconductor temperature control sheet 101 is electrically connected to the MCU. The temperature return controller is used for properly heating the condensed gas to return the temperature for subsequent detection. The MCU controls the temperature of the semiconductor temperature control chip 101.
In this embodiment, the oxygen filter 6 is filled with a molecular sieve or activated carbon. The gas used for atomization in the evaporative light scattering detector is inert gas, and molecular sieve or active carbon is required for adsorbing and filtering oxygen in the air.
In this embodiment, an initial pressure gauge 111 is provided in an inlet pipeline of the main gas tank 3, and a gas outlet pressure gauge 112 is provided at an outlet of the oxygen filter 6. The initial pressure gauge 111 and the gas outlet pressure gauge 112 monitor the initial gas pressure value and the outlet gas pressure value.
To sum up, the utility model provides a special controllable air generator of evaporation light scattering detector, through the operating time who sets up MCU control compressor 1, the working power supply of control compressor 1 is opened and close to make the suggestion of reporting to the police, prevent that compressor 1 from damaging, all flowing back valves 8 all can be controlled by MCU simultaneously. In addition, pressure in the main gas holder 3 receives pressure switch 7's response, through the control compressor 1 pressure that whether lets in the gaseous promotion jar body, when pressure in the main gas holder 3 is higher, compressed air vapor can condense into water, further detach the water among the compressed air, the cooperation one-level, second grade condensation dehydrating unit 4, strengthen the dewatering effect, can replace allochroic silica gel completely, also need not frequent change, thereby when practicing thrift the detection cost, compromise the stability of inert gas source.
The above-mentioned only the utility model discloses the feasible embodiment of preferred is not right the utility model discloses a restriction, the utility model discloses also not be limited to the above-mentioned example, technical field's technical personnel the utility model discloses an in the essential scope, change, modification, interpolation or replacement made also should belong to the utility model discloses a protection scope.
Claims (8)
1. An air generator for an evaporative light scattering detector, which is characterized by comprising a compressor, a first-stage condensation dehumidifying device, a main air storage tank, a second-stage condensation dehumidifying device, an auxiliary air storage tank and an oxygen filter, wherein the compressor, the first-stage condensation dehumidifying device, the main air storage tank, the second-stage condensation dehumidifying device, the auxiliary air storage tank and the oxygen filter are sequentially communicated, the compressor is electrically connected with an MCU (micro control unit), the top of the main air storage tank is communicated with an air pipe, the air pipe is provided with a pressure switch, the pressure switch is electrically connected with the compressor, the bottoms of the first-stage condensation dehumidifying device, the main air storage tank, the second-stage condensation dehumidifying device and the auxiliary air storage tank are respectively provided with a liquid discharge valve, and the MCU is electrically connected with the liquid discharge valves of the first-stage condensation dehumidifying device, the main air storage tank, the second-stage condensation dehumidifying device and the auxiliary air storage tank.
2. The air generator for an evaporative light scattering detector of claim 1, wherein the primary condensation dehumidifier and the secondary condensation dehumidifier are identical in construction.
3. The air generator of claim 2, wherein the primary condensation dehumidifier comprises a semiconductor refrigeration sheet, a winding-type condensation pipe is fixed on the semiconductor refrigeration sheet, a bent part at the bottom end of the condensation pipe is communicated with the drain valve, and the semiconductor refrigeration sheet is electrically connected with the MCU.
4. The air generator of claim 1, wherein an adjustable pressure relief valve is provided in the piping between the secondary condensation moisture removal device and the secondary air reservoir.
5. The air generator for an evaporative light scattering detector of claim 1, wherein the secondary air reservoir has a smaller volume than the primary air reservoir.
6. The air generator as claimed in claim 1, wherein a temperature return thermostat is connected between the auxiliary gas tank and the oxygen filter, the temperature return thermostat comprises a semiconductor temperature control sheet, a meandering heat exchange tube is fixed on the semiconductor temperature control sheet, and the semiconductor temperature control sheet is electrically connected with the MCU.
7. Air generator for an evaporative light scattering detector as claimed in claim 1, characterized by the fact that the oxygen filter is filled with molecular sieves or activated carbon.
8. The air generator for an evaporative light scattering detector as claimed in claim 1, wherein the inlet line of the main reservoir is provided with an initial pressure gauge and the outlet of the oxygen filter is provided with a gas outlet pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123304007.7U CN216571586U (en) | 2021-12-25 | 2021-12-25 | Air generator for evaporative light scattering detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123304007.7U CN216571586U (en) | 2021-12-25 | 2021-12-25 | Air generator for evaporative light scattering detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216571586U true CN216571586U (en) | 2022-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123304007.7U Active CN216571586U (en) | 2021-12-25 | 2021-12-25 | Air generator for evaporative light scattering detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216571586U (en) |
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2021
- 2021-12-25 CN CN202123304007.7U patent/CN216571586U/en active Active
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