Flue gas sampler for fixed pollution source VOCs (volatile organic compounds) online monitoring system

Abstract

The utility model discloses a flue gas sampler for a stationary pollution source VOCs on-line monitoring system, and relates to the field of flue gas samplers, the flue gas sampler comprises a sampling shell, a gas pump is arranged on one side of the sampling shell, a gas inlet hose is fixedly connected to a gas inlet of the gas pump, a gas outlet hose is fixedly connected to a gas outlet of the gas pump, and the gas outlet hose is fixedly connected to a gas outlet of the sampling shell. The air outlet hose penetrates through the inner wall of the side, close to the air pump, of the sampling shell, a screen is rotatably mounted on the inner wall of the bottom of the sampling shell, a spring mounting seat is fixedly mounted on the inner wall of the top of the sampling shell, and two reset springs are fixedly mounted on the side, close to the screen, of the spring mounting seat; a bearing seat is installed on the inner wall of the top of the sampling shell in a sliding mode, and the upper end of the screen is movably installed in the bearing seat. According to the sampling device, gas pollutants can be collected, solid particle pollutants can also be collected, the pollutants can be conveniently and accurately detected, and flue gas can be conveniently monitored in real time.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of flue gas sampler, especially the flue gas sampler for fixing pollution source VOCs on -line monitoring system. BACKGROUND

[0002] Fixed pollution source, usually refers to the place, equipment and device that discharge or release harmful substances to the environment or have harmful influence to the environment, VOCs volatile organic compounds, refer to the organic compounds that saturated vapor pressure is greater than 70.91Pa under normal temperature, 101.3kPa under standard atmospheric pressure, boiling point is below 50 ～ 260 DEG C and initial boiling point is equal to 250 DEG C, or any volatile organic solids or liquids at normal temperature and pressure.

[0003] The patent name is: a flue gas sampler for fixing pollution source VOCs on -line monitoring system (patent application number: 201810453073.4) and discloses the flue gas sampler of fixing pollution source VOCs on -line monitoring system, including heat tracing pipe fixed joint, waterproof protective cover, flange, stainless steel double sleeve joint, stainless steel fixed bolt, sampling pipe, filter connector, anti -blocking metal protective cover and high -precision metal sintered filter, one end of the sampling pipe is installed fixed with high -precision metal sintered filter through filter connector, this sampler places high -precision metal sintered filter in the chimney and carries out sampling filtration, effectively guarantees the consistency of sampling flue gas, avoids the loss of measurement component, but this sampler will filter out solid particles directly, only collects gaseous pollutants, leads to monitoring system only monitoring gaseous pollutants in flue gas, and cannot monitor solid particle pollutants in flue gas, leads to the inaccurate monitoring of pollutant.

[0004] Therefore, it is necessary to provide a flue gas sampler for fixing pollution source VOCs on -line monitoring system to solve the above -mentioned problems. UTILITY MODEL CONTENTS

[0005] The utility model discloses a flue gas sampler for fixing pollution source VOCs on -line monitoring system, which can collect gaseous pollutants and solid particle pollutants in flue gas.

[0006] To achieve the above object, the utility model provides the following technical scheme: the flue gas sampler for fixed pollution source VOCs on -line monitoring system, including the sampling shell, the one side of sampling shell is provided with the air pump, the air inlet of air pump is fixedly connected with the air inlet hose, the air outlet of air pump is fixedly connected with the air outlet hose, the air outlet hose is through in the inner wall of the one side of sampling shell close to air pump, the bottom inner wall of sampling shell is rotatably installed with the screen, the top inner wall of sampling shell is fixedly installed with spring mounting seat, the one side of spring mounting seat close to screen is fixedly installed with two reset springs, the top inner wall of sampling shell is slidably installed with the bearing seat, the upper end of screen is movably installed in the inside of bearing seat, one end of two reset springs is fixedly connected with the outer surface of one side of bearing seat.

[0007] Preferably, the bottom inner wall of the sampling shell is provided with a discharge port, and the discharge port is located between the air pump and the screen, a discharge inclined pipe is fixedly installed on the bottom of the discharge port, and a particle collection box is fixedly installed on the end of the discharge inclined pipe.

[0008] Preferably, the end of the sampling shell away from the air pump is provided with a gas collection box, an air inlet nozzle is provided on the side of the gas collection box close to the screen, and an electromagnetic valve is provided in the air inlet nozzle.

[0009] Preferably, the side bottom of the particle collection box and the gas collection box is provided with a connecting pipe, and a hand valve is provided in the connecting pipe.

[0010] Preferably, a fixing seat is fixedly installed on the end of the air inlet hose away from the air pump, and a fixing hole is provided on the fixing seat.

[0011] The utility model discloses a technical effect and advantage:

[0012] 1, when working, starts the air pump, extracts the gas in the chimney through the air inlet hose, and is arranged into the sampling shell inside through the air outlet hose, and the gas is rushed to the screen, and the gas is filtered through the screen, can remove the particulate matter in the inside, and the detection of the gas is convenient, and the solid particle can be prevented from damaging the gas detection equipment;

[0013] 2, the screen can bounce off the solid particle, under the action of gravity, the solid particle slides into the discharge port, and enters the particle collection box through the discharge inclined pipe, and the fixed shell is collected conveniently, and the detection equipment is convenient for detecting the pollutant in the solid particle, and the gas pollutant and the solid pollutant can be detected, and the accuracy is high, and the flue gas is monitored in real time. DRAWINGS

[0014] Fig. 1 It is the flue gas sampler structure schematic drawing for the utility model for fixed pollution source VOCs on -line monitoring system.

[0015] Fig. 2 It is the sectional view of the flue gas sampler of the fixed pollution source VOCs on-line monitoring system.

[0016] Fig. 3 It is the internal structure schematic view of the flue gas sampler of the fixed pollution source VOCs on-line monitoring system.

[0017] In the figure: 1, sampling shell; 2, air pump; 3, air inlet hose; 4, air outlet hose; 5, fixed seat; 6, spring mounting seat; 7, return spring; 8, bearing seat; 9, screen; 10, discharge port; 11, discharge inclined pipe; 12, particle collection box; 13, gas collection box. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0019] The utility model provides a flue gas sampler for fixed pollution source VOCs on-line monitoring system as Figs. 1-3 The utility model discloses a flue gas sampler for fixed pollution source VOCs on-line monitoring system, including sampling shell 1, one side of sampling shell 1 is provided with air pump 2, and the air inlet of air pump 2 is fixedly connected with air inlet hose 3, and the air outlet of air pump 2 is fixedly connected with air outlet hose 4, and air outlet hose 4 penetrates in the inner wall of the side close to air pump 2 on sampling shell 1, and the end of air inlet hose 3 away from air pump 2 is fixedly installed with fixed seat 5, and fixed seat 5 is provided with fixed hole, when working, sampling shell 1 is fixed at the outside of chimney, and the end of air inlet hose 3 is fixed in the inside of chimney through fixed seat 5, which is convenient for extracting gas, and the sampler is connected with gas detection equipment and solid particle detection equipment respectively and is used, the gas detection equipment can detect the pollutant in the gas, and the solid particle detection equipment can detect solid particle pollutant (for example: metal pollutant), and the setting belongs to conventional setting, therefore, no redundant description is made.

[0020] In order to solve the problem that the flue gas sampler can only collect gaseous pollutants in the flue gas and cannot collect solid particle pollutants, the utility model discloses a screen 9 is rotatably installed on the bottom inner wall of the sampling shell 1, a spring mounting seat 6 is fixedly installed on the top inner wall of the sampling shell 1, two reset springs 7 are fixedly installed on the side of the spring mounting seat 6 close to the screen 9, a bearing seat 8 is slidably installed on the top inner wall of the sampling shell 1, and the upper end of the screen 9 is movably installed in the bearing seat 8, one end of the two reset springs 7 is fixedly connected with the outer surface of one side of the bearing seat 8.

[0021] Further, the utility model discloses that the bottom inner wall of the sampling shell 1 is provided with a discharge port 10, and the discharge port 10 is located between the air pump 2 and the screen 9, a discharge inclined pipe 11 is fixedly installed at the bottom of the discharge port 10, and a particle collecting box 12 is fixedly installed at the end of the discharge inclined pipe 11, when working, the gas rushing to the screen 9 can extrude the screen 9, and the screen 9 compresses the reset spring 7, because the gas has floating property, under the action of the reset spring 7, the screen 9 can swing back and forth, and then the screen 9 can bounce off the solid particles, under the action of gravity, the solid particles can slide into the discharge port 10 and enter the particle collecting box 12 through the discharge inclined pipe 11, so that the solid particles are conveniently collected, the pollutants in the solid particles are conveniently detected by the detection equipment, both gaseous pollutants and solid pollutants can be detected, the accuracy is high, and the flue gas can be conveniently monitored.

[0022] The end, away from the air pump 2, of the sampling shell 1 is provided with a gas collecting box 13, the side, close to the screen 9, of the gas collecting box 13 is provided with an air inlet nozzle, and the air inlet nozzle is provided with an electromagnetic valve inside, the setting of the air inlet nozzle facilitates the flue gas to enter the inside of the gas collecting box 13, the setting of the electromagnetic valve can avoid the gas backflowing into the inside of the sampling shell 1, and the accuracy of detection can be ensured.

[0023] The side bottom of the particle collecting box 12 and the side bottom of the gas collecting box 13 are provided with a connecting pipe, and the connecting pipe is provided with a hand valve inside, the setting of the connecting pipe facilitates the connection with the detection equipment, real-time monitoring of the fixed pollution source VOCs is facilitated, and the setting belongs to the conventional setting, so it is not described in detail.

Claims

1. A flue gas sampler for use in a fixed source VOCs on-line monitoring system comprising a sampling housing (1), characterised in that: One side of the sampling shell (1) is provided with air pump (2), the air inlet of air pump (2) is fixedly connected with air inlet hose (3), the air outlet of air pump (2) is fixedly connected with air outlet hose (4), the air outlet hose (4) penetrates the inner wall of the side of sampling shell (1) close to air pump (2), the bottom inner wall of sampling shell (1) is rotatably installed with screen (9), the top inner wall of sampling shell (1) is fixedly installed with spring mounting seat (6), the side of spring mounting seat (6) close to screen (9) is fixedly installed with two reset springs (7), the top inner wall of sampling shell (1) is slidably installed with bearing seat (8), the upper end of screen (9) is movably installed in bearing seat (8), one end of two reset springs (7) is fixedly connected with the outer surface of one side of bearing seat (8).

2. The flue gas sampler for a fixed source VOCs on-line monitoring system according to claim 1, characterized in that: The bottom inner wall of the sampling shell (1) is provided with a discharge port (10), and the discharge port (10) is located between the air pump (2) and the screen (9), the bottom of the discharge port (10) is fixedly installed with a discharge inclined pipe (11), the end of the discharge inclined pipe (11) is fixedly installed with a particle collecting box (12).

3. The flue gas sampler for a fixed source VOCs on-line monitoring system according to claim 2, characterized in that: The end of the sampling shell (1) away from the air pump (2) is provided with a gas collecting box (13), the side of the gas collecting box (13) close to the screen (9) is provided with an air inlet nozzle, and the air inlet nozzle is provided with an electromagnetic valve.

4. The flue gas sampler for a fixed source VOCs on-line monitoring system according to claim 3, characterized in that: The bottom of one side of the particle collecting box (12) and the gas collecting box (13) is provided with a connecting pipe, and the connecting pipe is provided with a hand valve.

5. The flue gas sampler for a fixed source VOCs on-line monitoring system of claim 1, wherein: The end of the air inlet hose (3) away from the air pump (2) is fixedly installed with a fixed seat (5), and the fixed seat (5) is provided with a fixed hole.

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