TWM539680U - Automatic cleaning system for organic volatile compound gas detector - Google Patents

Description

Automatic cleaning system for organic volatile gas detectors

This creation is about an automatic cleaning system for organic volatile gas detectors, especially an automatic cleaning system for organic volatile gas detectors that can automatically determine the timing of cleaning.

In general, a large number of organic chemicals are often used in factories, laboratories, or waste disposal units. Among these organic chemicals, there are many volatile organic compounds (VOCs) with strong volatile properties. Volatilization into a gas that is dispersed in the air of the working environment has a great impact on the health of the people working in the working environment. Therefore, in the above working environment, a detector for organic volatile gas is usually set, which extracts air from the working environment, and detects whether there is a toxic organic volatile gas leaking out in the air, or whether the concentration of the organic volatile gas in the air exceeds the standard. range. However, as the air of the working environment is continuously extracted, the internal piping of the detector of the organic volatile gas or the detection of related components and the like may gradually adhere to impurities or dust in the air, causing impurities or dust to accumulate in the pipeline or The detection of the relevant components causes the detector sensitivity of the organic volatile gas to drop or even malfunction, and must be periodically disassembled for cleaning, which is inconvenient in maintenance.

In view of this, it is necessary to provide an automatic cleaning system for an organic volatile gas detector, which can automatically determine the timing of cleaning and cleaning to solve the above problems.

One of the aims of this creation is to provide an automatic organic gas detector for gas detectors. The cleaning system automatically cleans the organic volatile gas detector to increase ease of use.

The automatic cleaning system of the organic volatile gas detector of the present invention comprises: a sampler having an air inlet and a monitoring space, the air inlet communicating with the monitoring space; an air filter having an air inlet and a filter chamber The air inlet communicates with the filter chamber; a control valve is connected to the monitoring space of the sampler by a sampling gas port, a filter air port communicates with the filter chamber of the air filter, and a gas outlet; a diaphragm air pump is provided There is a transparent chamber and a detecting module, wherein the transparent chamber is connected to an air inlet through a first passage, the air inlet is connected to the gas outlet of the control valve, and the through chamber is connected by a second passage An air outlet, the transparent chamber is further provided with a transparent membrane, the transparent membrane is located between the first passage and the second passage, and the detecting module is configured to detect impurities or dust attached to the transparent membrane; And an ionization module having an ion chamber and an ultraviolet lamp illuminating the ion chamber, the ion chamber being in communication with an air outlet of the through chamber. Thereby, the timing of the cleaning can be judged and automatically cleaned, and the safety of the working environment can be ensured, and the safety accident can be prevented.

The detection module is disposed on the inner peripheral wall of the transparent chamber, and is a visible light emitter and a receiver that are aligned with each other, and the transparent membrane is located between the visible light emitter and the receiver. Thereby, the receiver can be used to receive and detect the light emitted by the visible light emitter, and has the effect of automatically determining whether the automatic cleaning system of the organic volatile gas detector should be cleaned.

The detection module is disposed adjacent to the air outlet of the diaphragm air pump and is a wind pressure sensor. Thereby, the air pressure of the air outlet is detected to automatically determine whether the automatic cleaning system of the organic volatile gas detector has the effect of cleaning.

The filter chamber is provided with porous solid particles, granular activated carbon or activated carbon fibers. Thereby, organic compounds and dust can be adsorbed, and the wall can be cleaned by clean air to prevent contamination.

Wherein, the control valve is a solenoid valve. Thereby, the overall operation of the automatic cleaning system of the organic volatile gas detector can be controlled by the microcomputer, and the utility model has the advantages of automatic and convenient setting.

Wherein, the transparent chamber has a plurality of evenly dispersed air holes connecting the first passage and the second passage. Thereby, the air can be evenly dispersed through the permeable membrane, so that impurities or dust can be attached to the permeable membrane on average, which has the effect of improving the detection accuracy of the detection module.

The permeable membrane partitions the permeable compartment into two spaces that respectively connect the first passage and the second passage. Thereby, the air sucked by the air inlet must be completely passed through the transparent film to be discharged from the air outlet, thereby improving the detection accuracy of the detection module.

The automatic cleaning system of the organic volatile gas detector of the present invention is provided with the permeable membrane by the diaphragm air pump, and the timing of the cleaning can be judged and automatically cleaned by the amount of impurities or dust adsorbed by the permeable membrane. The sensitivity of the organic volatile gas detector can be maintained, and the safety of the working environment can be ensured, and the safety accident can be prevented. Furthermore, by judging the timing of the cleaning and automatically cleaning, without having to manually disassemble and maintain it, it has the effect of increasing the convenience of use.

1‧‧‧sampler

11‧‧‧ gas inlet

12‧‧‧Monitoring space

2‧‧‧Air filter

21‧‧‧ inlet

22‧‧‧Filter room

3‧‧‧Control valve

31‧‧‧Sampling gas port

32‧‧‧Filter air port

33‧‧‧ gas outlet

4‧‧‧diaphragm air pump

41‧‧‧air inlet

42‧‧‧ outlet

43‧‧‧Transmission room

43a‧‧‧First Passage

43b‧‧‧second channel

44‧‧‧Transparent membrane

45‧‧‧Detection module

5‧‧‧Ionization Module

51‧‧‧Ion chamber

52‧‧‧UV lamp

6‧‧‧Three-way valve group

6a‧‧‧first valve

6b‧‧‧second valve

6c‧‧‧third valve

W1‧‧‧ first connecting pipe

W2‧‧‧Second connecting tube

W3‧‧‧ third connecting pipe

A‧‧‧Exhaust port

Figure 1: Schematic diagram of the automatic cleaning system of the organic volatile gas detector of the present invention.

Figure 2: Schematic diagram of the diaphragm pump of the automatic cleaning system of the organic volatile gas detector of the present invention.

Figure 3: Schematic diagram of the operation of the automatic cleaning system of the organic volatile gas detector of this creation to suck in clean air.

Figure 4: Schematic diagram of the automatic cleaning system of the organic volatile gas detector of this creation with oxygen atomic air reflux cleaning.

Figure 5a: Schematic diagram of the three-way valve group switch of the automatic cleaning system of the organic volatile gas detector of the present invention.

Figure 5b: Schematic diagram of the three-way valve group switch of the automatic cleaning system of the organic volatile gas detector of the present invention.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Referring to FIG. 1 , which is a preferred embodiment of the automatic cleaning system for the organic volatile gas detector of the present invention, the automatic cleaning system of the organic volatile gas detector comprises a sampler 1 and an air filter. 2. A control valve 3, a diaphragm air pump 4 and an ionization module 5. The sampler 1 and the air filter 2 can take in air in the environment, and the inhaled air is introduced into the control valve 3 and the diaphragm air pump 4, and finally enters the ionization module 5 through the diaphragm air pump 4 and is discharged. . The sampler 1, the air filter 2, the control valve 3, the diaphragm air pump 4, and the ionization module 5 may be disposed in the same housing, or may be separately disposed to form different housings, and The roads are connected to each other, and this creation is not limited here. In this embodiment, the sampler 1 and the air filter 2 are disposed in the same casing, and the control valve 3, the diaphragm air pump 4, and the ionization module 5 are disposed on another casing.

In detail, the sampler 1 has an air inlet 11 and a monitoring space 12 connected to the air inlet 11. The sampler 1 is used for drawing air in the environment into the monitoring space 12, and the monitoring space 12 can be provided with The volatile organic compound monitoring device is configured to monitor the concentration of volatile organic compounds in the ambient air, and the air taken in by the monitoring space 12 can be sent to the control valve 3 by a first communication pipe W1.

Referring to Figures 1 and 3, the air filter 2 has an air inlet 21 and a filter chamber 22 that communicates with the air inlet 21, and the filter chamber 22 can be used to filter and remove volatile organic compounds in the ambient air. To form clean air, the filter chamber 22 can be set An adsorbent such as a porous solid particle, a granular activated carbon or an activated carbon fiber, or a semipermeable membrane may be provided to remove the organic substance, which is not limited herein. The ambient air filtered through the filter chamber 22 can be sent to the control valve 3 by a second communication pipe W2.

The control valve 3 has a sampling gas port 31 connected to the first communication pipe W1. The control valve 3 further has a filtering air port 32, and the filtering air port 32 is connected to the second communication pipe W2. Thereby, the air of the monitoring space 12 of the sampler 1 or the air of the filter chamber 22 of the air filter 2 can enter the control valve 3 and be output via a gas output port 33. The control valve 3 can open or close the sampling gas port 31 and the filtering air port 32 to control the air of the monitoring space 12 and the filtering chamber 22 to enter and exit the control valve 3. In the present embodiment, the control valve 3 is preferably a solenoid valve to facilitate control of the sampling gas port 31 and the filter air port 32 by a microcomputer (not shown).

The diaphragm air pump 4 has an air inlet 41 that communicates with the gas output port 33 of the control valve 3, so that the diaphragm air pump 4 can pump the monitoring space 12 and the filter chamber 22 by pumping action. Air is sucked into the diaphragm air pump 4 via the control valve 3, and is output through an air outlet 42.

Referring to FIG. 2, the diaphragm air pump 4 may include a through chamber 43 that communicates with the air inlet 41 through a first passage 43a, and a second passage 43b communicates with the air outlet. 42. In this embodiment, the through-chamber 43 can open a plurality of evenly dispersed air holes 431 communicating with the first passage 43a and the second passage 43b, so that air can enter and exit the through-chamber 43 through the plurality of air holes 431.

The transparent chamber 43 is provided with a transparent membrane 44. The transparent membrane 44 is preferably located between the first passage 43a and the second passage 43b, so that the air sucked into the air inlet 41 enters the transparent chamber 43. The air permeable membrane 44 can be passed through the venting membrane 44, and the air sucked by the air inlet 41 can be uniformly dispersed through the permeable membrane 44 by the plurality of air holes 431.

It should be noted that the transparent membrane 44 can space the through-chamber 43 to communicate with the two spaces of the first passage 43a and the second passage 43b, respectively, so that the air sucked by the air inlet 41 must be all After passing through the transparent film 44, the air outlet 42 can be discharged. The transparent film 44 can also be disposed only between the air holes 431 communicating with the first channel 43a and the second channel 43b to make the air inlet. At least a portion of the air taken in by the port 41 passes through the permeable membrane 44 and is discharged from the venting opening 42. This allows the impurities or dust in the air to adhere to the permeable membrane 44, which is not limited herein.

The diaphragm air pump 4 can be provided with a detecting module 45 for detecting whether the transparent film 44 is attached with excessive impurities or dust. For example, the detecting module 45 can be disposed on the inner peripheral wall of the transparent chamber 43 and be a visible light emitter and a receiver that are aligned with each other. The visible light emitter can be a fluorescent emitter or a laser emitting light. The receiver is configured to receive or detect light emitted by the visible light emitter, and the transparent film 44 is located between the visible light emitter and the receiver. When the transparent film 44 is attached with excessive impurities or dust, The light emitted by the visible light emitter is blocked, cannot pass through the transparent film 44, and cannot be received by the receiver, thereby determining whether the automatic cleaning system of the organic volatile gas detector is excessively stacked. Impurities or dust are washed.

As shown in FIG. 3, the detection module 45 can also be a wind pressure sensor, preferably disposed adjacent to the air outlet 42 of the diaphragm air pump 4, by which the wind pressure sensor can be used. The wind pressure of the air outlet 42 is measured, that is, when the conductive film 44 is attached with excessive impurities or dust, the air entering through the air inlet 41 is difficult to pass through the transparent film 44, and the air outlet 42 is made. The wind pressure is reduced, whereby the detection module 45 of the wind pressure sensor can also determine whether the automatic cleaning system of the organic volatile gas detector has accumulated excessive impurities or dust and cleaned.

Referring to FIG. 1 , the ionization module 5 includes an ion chamber 51 , and the ion chamber 51 communicates with the gas outlet 42 of the diaphragm air pump 4 for receiving the diaphragm air pump. 4 imported air, the ionization module 5 comprises an ultraviolet lamp 52, and the oxygen in the air is ionized by the irradiation of the ultraviolet lamp 52, so that oxygen forms an oxygen atom, thereby using oxygen atoms to carry away impurities or Dust to achieve the purpose of cleaning. Further, the ion chamber 51 may be connected to a third communication tube W3 through which air passing through the ion chamber 51 is discharged through an exhaust port A to maintain the operation of circulating the entire air. The third communication tube W3 and the exhaust port A may be disposed on the same housing as the ionization module 5, or may be disposed on the sampler 1 and the housing of the air filter 2, and are not limited herein. .

Referring to Figures 1 and 2, the automatic cleaning system of the organic volatile gas detector of the present invention performs the air detecting function, the filtering air port 32 of the control valve 3 is closed to block the air from the filtered air. The port 32 enters the control valve 3 so that air enters only from the sample gas port 31 of the control valve 3. At this time, the air of the working environment enters through the air inlet 11 of the sampler 1 to monitor the concentration of volatile organic compounds in the air of the working environment, and continuously passes air through the control valve via the first communication pipe W1. The sample gas port 31 is sent to the control valve 3, and is outputted from the gas output port 33 of the control valve 3, introduced into the permeable chamber 43 via the gas inlet port 41 of the diaphragm air pump 4, and passed through the permeable membrane 44. It is then led out by the air outlet 42 and finally discharged through the ionization module 5 to form a complete circulating flow. Thereby, the air in the working environment is continuously sucked into the air inlet 11 of the sampler 1 to continuously monitor the concentration of the volatile organic compound to prevent the toxic organic volatile gas from leaking out, or the organic volatile gas is in the air. The concentration is outside the standard range.

In addition, as the air in the working environment is continuously sucked, the impurities or dust contained in the air are sucked in and attached to the permeable membrane 44 of the diaphragm air pump 4, and when the permeable membrane 44 is excessively attached The impurities and dust are detected by the detecting module 45. For example, when the detecting module 45 is a mutually visible visible light emitter and receiver, the light emitted by the visible light emitter cannot be accepted by the receiver. Receiving; or when the detecting module 45 is a wind pressure sensor, air is difficult to pass through the transparent film 44, and the wind pressure sensor detects the diaphragm air pump 4 The wind pressure at the air outlet 42 becomes small, and the automatic cleaning system of the organic volatile gas detector automatically performs the cleaning function.

Referring to FIG. 3, when the automatic cleaning system of the organic volatile gas detector performs the cleaning function, the sampling gas port 31 of the control valve 3 is closed to block the entry of air from the sampling gas port 31 to the The valve 3 is controlled such that air enters only from the filtered air port 32 of the control valve 3. at this time. The air of the working environment enters through the air inlet 21 of the air filter 2, and is filtered into clean air through the filter chamber 22, and then enters through the second air inlet pipe W2 through the filter air port 32 of the control valve 3, The through-chamber 43 is introduced through the air inlet 41 of the diaphragm pump 4, passes through the air-permeable membrane 44, and is led out from the air outlet 42 and finally enters the ion chamber 51 of the ionization module 5 in the ion chamber. In 51, after the clean air is irradiated by the ultraviolet lamp 52, the oxygen in the air is ionized, so that oxygen forms an oxygen atom, whereby the oxygen atom can be used to carry away impurities or dust.

Referring to FIG. 4, at this time, the filtering air port 32 of the control valve 3 is closed to block the passage of air from the filtering air port 32 to the control valve 3, and the diaphragm air pump 4 operates the ion. The air with oxygen atoms in the chamber 51 is reversely flowed, and sequentially passes through the diaphragm air pump 4, and the control valve 3 is discharged from the air inlet port 11 of the sampler 1 via the first communication tube W1, thereby stacking The impurities or dust adhering to the ion chamber 51, the diaphragm air pump 4, the control valve 3, and the sampler 1 are discharged to achieve the purpose of cleaning.

The diaphragm air pump 4 can also control the air to be input from the air inlet 41 of the diaphragm air pump 4 and output from the air outlet 42 of the diaphragm air pump 4 by a three-way valve group 6. In detail, please refer to FIG. 5a, the three-way valve group 6 has a first valve 6a connected to the gas outlet 33 of the control valve 3, an air outlet 42 of the diaphragm air pump 4, and a second valve 6b. Connected to the air inlet 41 of the diaphragm air pump 4, and a third valve 6c is connected to the ion chamber 51 of the ionization module 5 and the air outlet 42 of the diaphragm air pump 4, and the first valve 6a and the first The two valves 6b are connected to each other, and the second valve 6b and the third valve 6c are connected to each other.

When the gas is output from the gas outlet port 33, the passage of the first valve 6a and the gas outlet port 42 of the diaphragm air pump 4 is closed, and the passage of the second valve 6b and the third valve 6c is closed. The first valve 6a enters the intake port 41 through the second valve 6b, and is output from the air outlet 42 and enters the ion chamber 51 through the third valve 6c.

Referring to FIG. 5b, when the air backflow with oxygen atoms is outputted by the ion chamber 51, the passage of the third valve 6c and the air outlet 42 is closed, and the first valve 6a and the first The passage of the two valve 6b is closed. At this time, the gas enters the intake port 41 through the second valve 6b through the third valve 6c, and is output from the air outlet 42 and enters the control valve 3 through the first valve 6a. Gas outlet 33.

When the detecting module 45 of the diaphragm air pump 4 detects that the impurities or dust adhering to the transparent membrane 44 of the diaphragm air pump 4 is taken away, for example, the receiver receives the light emitted by the visible light emitter again. Or the air can pass through the transparent membrane 44 normally, so that when the wind pressure sensor detects the normal wind pressure, the filtered air port 32 of the control valve 3 is closed to make the organic volatile gas detector The automatic cleaning system replies to the air detection function. In addition, when the diaphragm air pump 4 is actuated to make the air return to the reverse flow, it is a matter of course to change the air intake from the exhaust port A to maintain a normal cycle, and at this time, the exhaust port A can also select to input clean air to avoid Inhalation of dirty air affects the cleaning effect, which is understood by those skilled in the art and will not be described herein.

In summary, the automatic cleaning system of the organic volatile gas detector of the present invention provides the permeable membrane by the diaphragm pump, and the timing of the cleaning can be judged by the amount of impurities or dust adsorbed by the permeable membrane. Automatic cleaning, in this way, can maintain the sensitivity of the organic volatile gas detector, and ensure the safety of the working environment, with the effect of preventing accidents. Furthermore, by the automatic cleaning system of the organic volatile gas detector, it is possible to judge the timing of cleaning and automatically clean it without manual disassembly and maintenance, and has the effect of increasing the convenience of use.

Although the present invention has been disclosed using the above preferred embodiments, it is not intended to be limiting. In this creation, any person skilled in the art without departing from the spirit and scope of the present invention, various modifications and modifications to the above embodiments are still within the technical scope protected by the present creation. Therefore, the scope of protection of this creation is attached. The scope defined in the scope of application for patent application shall prevail.

1‧‧‧sampler

11‧‧‧ gas inlet

12‧‧‧Monitoring space

2‧‧‧Air filter

21‧‧‧ inlet

22‧‧‧Filter room

3‧‧‧Control valve

31‧‧‧Sampling gas port

32‧‧‧Filter air port

33‧‧‧ gas outlet

4‧‧‧diaphragm air pump

41‧‧‧air inlet

42‧‧‧ outlet

45‧‧‧Detection module

5‧‧‧Ionization Module

51‧‧‧Ion chamber

52‧‧‧UV lamp

W1‧‧‧ first connecting pipe

W2‧‧‧Second connecting tube

W3‧‧‧ third connecting pipe

A‧‧‧Exhaust port

Claims (7)

An automatic cleaning system for an organic volatile gas detector comprises: a sampler having an air inlet and a monitoring space, the air inlet communicating with the monitoring space; an air filter having an air inlet and a filter chamber, The inlet port is connected to the filter chamber; a control valve has a sampling gas port communicating with the monitoring space of the sampler, a filter air port communicating with the filter chamber of the air filter, and a gas outlet; a diaphragm air pump having a pass a through chamber and a detecting module, the through chamber is connected to an air inlet through a first passage, the air inlet is connected to the gas outlet of the control valve, and the through chamber is connected by a second passage a gas permeable opening, the permeable membrane is further provided with a transparent membrane, the permeable membrane is located between the first passage and the second passage, and the detecting module is configured to detect impurities or dust attached to the permeable membrane; The ionization module has an ion chamber and an ultraviolet lamp that illuminates the ion chamber, and the ion chamber is in communication with an air outlet of the through chamber. The automatic cleaning system for an organic volatile gas detector according to claim 1, wherein the detection module is disposed on an inner peripheral wall of the transparent chamber, and is a visible light emitter and a mutually aligned The receiver, the transparent film is located between the visible light emitter and the receiver. The automatic cleaning system for an organic volatile gas detector according to claim 1, wherein the detection module is disposed adjacent to an air outlet of the diaphragm air pump and is a wind pressure sensor. The automatic cleaning system for an organic volatile gas detector according to claim 1, wherein the filter chamber is provided with porous solid particles, granular activated carbon or activated carbon fibers. An automatic cleaning system for an organic volatile gas detector according to claim 1, 2 or 3, wherein the control valve is a solenoid valve. The automatic cleaning system for an organic volatile gas detector according to claim 1, wherein the permeable chamber has a plurality of evenly dispersed pores communicating with the first passage and the second passage. An automatic cleaning system for an organic volatile gas detector according to claim 1, wherein the permeation membrane is spaced apart to connect the first passage and the second passage, respectively. Two spaces.