CN210982385U - VOCs on-line measuring device - Google Patents

Abstract

The utility model relates to the technical field of VOCs detection equipment, in particular to a VOCs online detection device, which comprises a casing. After volatile gas enters the interior of a detection box through an air intake pipe, the VOCs online detector detects the gas entering the detection box. , and transmit the detection data to the touch screen and the microprocessor. When the detected gas does not exceed the standard, the microprocessor closes the first solenoid valve and opens the second solenoid valve, so that the gas is directly discharged through the gas outlet pipe. When it exceeds the standard, the microprocessor opens the first solenoid valve and closes the second solenoid valve, so that the gas enters the filter box through the first air pipe, so that the absorbent inside the filter box absorbs the organic matter in the gas, and then passes through the second guide tube. The trachea enters the filter cartridge, which is filled with activated carbon, which further absorbs the volatile organic compounds in the gas and discharges through the gas outlet pipe, and is equipped with a one-way valve to prevent the gas from flowing back.

Description

A VOCs online detection device

technical field

The utility model relates to the technical field of VOCs detection equipment, in particular to a VOCs online detection device.

Background technique

VOCs refer to various organic compounds with a boiling point of 50°C to 260°C at room temperature. In my country, VOCs refer to organic compounds with a saturated vapor pressure greater than 70 Pa at room temperature and a boiling point below 260°C at normal pressure, or at 20°C. All organic compounds with vapour pressure greater than or equal to 10 Pa and volatile under conditions;

Most VOCs are flammable, explosive and unsafe, and under sunlight, photochemical reactions occur with nitrogen oxides, hydrocarbons and oxidants in the atmosphere, endangering human health and crop growth. In order to prevent substandard emission of volatile organic compounds, The environment is damaged, and detection is usually required when discharging. However, most of the existing VOCs online monitoring equipment has a single function and only has a detection function, but cannot process and purify the gas that exceeds the standard, which is very inconvenient to use.

Utility model content

The purpose of this utility model is to provide an on-line detection device for VOCs, so as to solve the problem of inability to process and purify the gas exceeding the standard proposed in the above-mentioned background art.

In order to achieve the above purpose, the present invention provides the following technical solutions: comprising a casing, an air inlet pipe is fixedly installed on one side of the casing, a detection box is fixedly installed at the other end of the air inlet pipe, and a lower end of the detection box is fixedly installed with a In the VOCs online monitor, a tee is fixedly installed on the other side of the detection box, a first air duct is fixedly installed at one end of the tee, and a first solenoid valve is fixedly installed inside the first air duct, and the An air outlet pipe is fixedly installed at the other end of the tee, a second solenoid valve is fixedly installed inside the air outlet pipe, a filter box is fixedly installed in the lower part of the detection box inside the shell, and the first air guide pipe is fixedly installed. The other end extends to the inside of the filter box, a liquid injection pipe is fixedly installed at the lower end of one side of the filter box, and a second air guide pipe is fixedly installed at the upper end of the other side of the filter box. A filter cartridge is fixedly installed at the other end, the other end of the filter cartridge is fixedly installed at the lower end of the air outlet pipe, a one-way valve is fixedly installed between the filter cartridge and the air outlet pipe, and the inner upper end of the casing is a one-way valve. A microprocessor is fixedly installed on the side, a touch screen is inlaid and installed on the upper end of the casing, and an access door is hinged at the middle position of the other side of the casing;

The VOCs detector is electrically connected to the touch screen and the microprocessor, and the microprocessor is electrically connected to the first solenoid valve and the second solenoid valve.

Preferably, one side of the casing is uniformly inclined and provided with heat dissipation holes.

Preferably, the air inlet pipe, the air outlet pipe and the liquid injection pipe all penetrate through the casing and extend to the outside of the casing.

Preferably, an absorbent is injected into the filter box through the liquid injection pipe.

Preferably, the number of the filter cartridges is three, the filter cartridges are connected end to end, and the interior of the filter cartridge is filled with activated carbon.

Preferably, one end of the first air duct extends to the lower end inside the filter box.

Preferably, a through hole is opened on one side of the casing, the access door is hinged to the inside of the through hole, and a handle is fixedly installed on one side of the access door.

Technical effects and advantages of the present utility model:

1. The utility model is provided with a first solenoid valve and a second solenoid valve, so that when the gas entering the detection box through the air inlet pipe is qualified, the data is displayed on the touch screen, and the gas is directly discharged through the gas outlet pipe. When it exceeds the standard, the test data will be displayed on the touch screen, and the gas entering the first airway will be processed and purified, which is convenient for use;

2. The utility model is provided with a filter box and a filter cartridge, so that the excess gas first absorbs the organic matter in the gas through the absorbent inside the filter box, and further absorbs the organic matter in the purified gas through the activated carbon inside the filter cartridge, so as to improve the purification effect. , to achieve the effect of online detection and direct purification.

Description of drawings

Figure 1 is a front sectional view of the utility model.

Figure 2 is a front view of the utility model.

Figure 3 is a side view of the utility model.

FIG. 4 is an electrical connection relationship diagram of the present invention.

In the picture: 1. Shell; 2. Intake pipe; 3. Detection box; 4. VOCs online monitor; 5. Three-way; 6. First air duct; 7. First solenoid valve; 8. Air outlet; 9. The second solenoid valve; 10, the filter box; 11, the liquid injection pipe; 12, the second air duct; 13, the filter cartridge; 14, the one-way valve; 15, the microprocessor; 16, the touch screen; 17, the maintenance door .

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

The utility model provides a VOCs online detection device as shown in Figures 1-4, comprising a casing 1, one side of the casing 1 is evenly slanted with heat dissipation holes, one side of the casing 1 is fixedly installed with an air intake pipe 2, and the air intake pipe The other end of 2 is fixedly installed with a detection box 3, the lower end of the detection box 3 is fixedly installed with a VOCs online monitor 4, the model of the VOCs online monitor 4 is preferably: KY-95H, and the other side of the detection box 3 is fixedly installed with a tee 5. One end of the three-way 5 is fixedly installed with the first air conduit 6, the inside of the first air conduit 6 is fixedly installed with the first solenoid valve 7, the other end of the three-way 5 is fixedly installed with the air outlet 8, and the inside of the air outlet 8 is fixedly installed. A second solenoid valve 9 is fixedly installed, the interior of the housing 1 is located at the lower part of the detection box 3 and a filter box 10 is fixedly installed, the other end of the first air duct 6 extends to the inside of the filter box 10, and one end of the first air duct 6 Extending to the lower end of the filter box 10 , a liquid injection pipe 11 is fixedly installed at the lower end of one side of the filter box 10 , the filter box 10 is injected with absorbent through the liquid injection pipe 11 , the air inlet pipe 2 , the air outlet pipe 8 and the liquid injection pipe 11 They all run through the casing 1 and extend to the outside of the casing 1. The upper end of the other side of the filter box 10 is fixedly installed with a second air duct 12, and the other end of the second air duct 12 is fixedly installed with a filter cartridge 13. The number of filter cartridges 13 is Three, and the filter cartridges 13 are connected end to end, the interior of the filter cartridge 13 is filled with activated carbon, the other end of the filter cartridge 13 is fixedly installed on the lower end of the air outlet pipe 8, and a one-way valve 14 is fixedly installed between the filter cartridge 13 and the air outlet pipe 8 , a microprocessor 15 is fixedly installed on one side of the inner upper end of the casing 1, and the model of the microprocessor 15 is preferably: TMS320F28335PGFA. The door 17 has a through hole on one side of the casing 1 , the inspection door 17 is hinged to the inside of the through hole, and a handle is fixedly installed on one side of the inspection door 17 .

As shown in FIG. 4 , the VOCs detector 4 is electrically connected to the touch screen 16 and the microprocessor 15 , and the microprocessor 15 is electrically connected to the first solenoid valve 7 and the second solenoid valve 9 .

The working principle of the utility model: when the utility model is used, the air inlet pipe 2 is connected to the air supply pipe, and the absorbent is injected into the filter box 10 through the liquid injection pipe 11. When the volatile gas enters the detection box through the air inlet pipe 2 Inside 3, the VOCs online detector 4 detects the gas entering the detection box 3, and transmits the detection data to the touch screen 16 and the microprocessor 15. The touch screen 16 displays the detection data, and the microprocessor 15 analyzes it. Whether the data exceeds the standard, when the detected gas does not exceed the standard, the microprocessor 15 closes the first solenoid valve 7 and opens the second solenoid valve 9, so that the gas inside the detection box 3 is directly discharged through the gas outlet pipe 8. When the microprocessor 15 analyzes When the data exceeds the standard, the microprocessor 15 opens the first solenoid valve 7 and closes the second solenoid valve 9, so that the gas enters the lower end of the interior of the filter box 10 through the first air conduit 6, so that the absorbent inside the filter box 10 will The organic matter in the gas is absorbed, and the liquid injection pipe 11 is provided, so that the absorbent inside the filter box 10 can be discharged and injected, so as to facilitate the replacement of the absorbent inside the filter box 10. After the absorbent is absorbed, it enters the filter cartridge 13 through the second air conduit 12, the filter cartridge 13 is filled with activated carbon, and the number of filter cartridges 13 is three, and the filter cartridges 13 are connected end to end, so that the activated carbon inside the filter cartridge 13 The volatile organic compounds in the gas are better absorbed, so that the gas is further purified, and the other side of the filter cartridge 13 is connected to the lower end of the gas outlet pipe 8, so that the purified gas enters the gas outlet pipe 8 and passes through the outlet pipe 8. The gas pipe 8 is discharged, and is provided with a one-way valve 14 to avoid backflow of gas, and an inspection door 17 is provided to facilitate the replacement of the filter cartridge 13 and the maintenance of the interior of the utility model.

Finally, it should be noted that the above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. , it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some of its technical features, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model, All should be included within the protection scope of the present invention.

Claims (7)

1. An on-line detection device for VOCs, comprising a casing (1), characterized in that: an air intake pipe (2) is fixedly installed on one side of the casing (1), and the other end of the air intake pipe (2) is fixedly installed with a A detection box (3), a VOCs online monitor (4) is fixedly installed at the lower end of the detection box (3), a tee (5) is fixedly installed on the other side of the detection box (3), and the tee ( 5) A first air conduit (6) is fixedly installed at one end, a first solenoid valve (7) is fixedly installed inside the first air conduit (6), and the other end of the three-way (5) is fixedly installed with a An air outlet pipe (8), a second solenoid valve (9) is fixedly installed inside the air outlet pipe (8), and a filter box ( 10), the other end of the first air duct (6) extends to the inside of the filter box (10), and a liquid injection pipe (11) is fixedly installed at the lower end of one side of the filter box (10). A second air duct (12) is fixedly installed on the upper end of the other side of the filter box (10), and a filter cartridge (13) is fixedly installed on the other end of the second air duct (12). The other end is fixedly mounted on the lower end of the air outlet pipe (8), and a check valve (14) is fixedly installed between the filter cartridge (13) and the air outlet pipe (8). A microprocessor (15) is fixedly installed on one side of the upper end, a touch screen (16) is inlaid on the upper end of the casing (1), and an access door (17) is hinged at the middle position of the other side of the casing (1). ; The VOCs online monitor (4) is electrically connected to the touch screen (16) and the microprocessor (15), and the microprocessor (15) is electrically connected to the first solenoid valve (7) and the second solenoid valve (9). 2 . The VOCs on-line detection device according to claim 1 , wherein a cooling hole is uniformly slanted on one side of the casing ( 1 ). 3 . 3. A VOCs online detection device according to claim 1, characterized in that: the air inlet pipe (2), the air outlet pipe (8) and the liquid injection pipe (11) all penetrate the casing ( 1), extending to the outside of the housing (1). 4 . The VOCs online detection device according to claim 1 , wherein an absorbent is injected into the filter box ( 10 ) through the liquid injection pipe ( 11 ). 5 . 5. A VOCs online detection device according to claim 1, characterized in that: the number of the filter cartridges (13) is three, and the filter cartridges (13) are connected end to end, and the filter cartridges (13) ) is filled with activated carbon. 6 . The online VOCs detection device according to claim 1 , wherein one end of the first air duct ( 6 ) extends to the lower end inside the filter box ( 10 ). 7 . 7. A VOCs online detection device according to claim 1, characterized in that: a through hole is opened on one side of the casing (1), and the access door (17) is hinged to the inside of the through hole, And a handle is fixedly installed on one side of the access door (17).

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