A filter for detecting exhaust gas components

Abstract

This utility model discloses a filter for detecting the composition of exhaust gas, comprising an aerator and an outlet pipe. The diameter of the aerator is larger than that of the outlet pipe, and one end of the aerator is connected to an inlet pipe. This utility model uses a fine filter screen inside the outlet pipe for fine filtration, avoiding clogging and reducing pressure drop. Multiple filtration operations ensure both reduced pressure drop and effective gas filtration. The filtered gas is introduced into a rotary tube through a collecting hopper. The rotary tube is connected to the air intake end of the detection equipment. The collecting hopper reduces the amount of high-speed exhaust gas introduced, and the exhaust gas is spirally decelerated within the rotary tube, further reducing its flow rate. The filtered exhaust gas is then introduced into the detection equipment for testing. This method effectively reduces the gas flow rate and prevents high-speed exhaust gas from impacting and damaging the detection equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a filter used for detecting exhaust gas components. Background Art

[0002] Industrial waste gas detection includes organic waste gas and inorganic waste gas. Organic waste gas mainly includes various hydrocarbons, alcohols, aldehydes, acids, ketones and amines; inorganic waste gas mainly includes sulfur oxides, nitrogen oxides, carbon oxides, halogens and their compounds. Industrial waste gas is an important source of air pollutants. A large amount of industrial waste gas discharged into the atmosphere will inevitably reduce the quality of the atmospheric environment, bring serious harm to human health, and cause huge losses to the national economy. After the harmful substances in industrial waste gas enter the human body through the respiratory tract and skin, they can cause temporary and permanent lesions in human respiratory, blood, liver and other systems and organs. In particular, benzopyrene polycyclic aromatic hydrocarbons can directly cause cancer in the human body, which has attracted great attention from humans. In the process of waste gas emission, it is necessary to use detection equipment to detect the component content, and it can be discharged only when it meets the emission standards. Before the waste gas detection, the waste gas needs to be filtered to avoid impurities in the waste gas blocking the detection port and affecting the detection.

[0003] However, the existing filters for detecting exhaust gas components mostly filter through a filter layer, which requires a thicker filter layer to achieve the desired filtering effect and produce a larger pressure drop. The particulate matter in the exhaust gas can easily clog the filter layer, requiring frequent regular cleaning. In addition, when sampling gas, ordinary filters are prone to gas shock due to the large exhaust gas flow rate, which can easily damage the gas component detection device and result in poor use effect. Based on this, the utility model designs a filter for exhaust gas component detection to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a filter for exhaust gas component detection, so as to solve the above-mentioned problems that particulate matter in the exhaust gas is easy to clog the filter layer and requires frequent regular cleaning, and ordinary filters are prone to gas shock and damage to the gas component detection device during gas sampling due to the high exhaust gas flow rate.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A filter for detecting exhaust gas components comprises an air expansion pipe and an air outlet pipe, the diameter of the air expansion pipe is larger than the diameter of the air outlet pipe, one end of the air expansion pipe is connected to an air inlet pipe, a front baffle is welded to one end of the interior of the air expansion pipe, the front baffle is conical, a rear baffle is welded to the inner wall of the air expansion pipe, a through groove is opened in the middle of the rear baffle, a coarse filter is installed in the air expansion pipe, a sealing cover is bolted to the open end of the air expansion pipe, the air outlet end of the sealing cover is clamped with the air outlet pipe, a hoop is installed at the connecting end of the air outlet pipe, a fine filter is installed inside the air outlet pipe, an air collecting scoop is welded to the inner wall of the air outlet end of the air outlet pipe, the air collecting scoop is connected to a vortex pipe, the vortex pipe passes through the inner wall of the air outlet pipe, and one end of the vortex pipe is connected to a connector.

[0007] As a further solution of the utility model: a diverter cone is integrally formed in the middle of the front baffle, and the front baffle and the air expansion pipe are arranged on the same axis.

[0008] As a further solution of the utility model: the rear baffle is cone-shaped and is arranged parallel to the front baffle.

[0009] As a further solution of the utility model: a material storage box is welded to the bottom of the air expansion pipe, the bottom of the material storage box is open, and a sealing plate is bolted to the bottom open end of the material storage box.

[0010] As a further solution of the utility model: the material storage box is trapezoidal, a square groove is provided at the bottom of the material storage box, and the groove at the bottom of the material storage box matches the sealing plate.

[0011] As a further solution of the utility model: the wind collecting scoop is arranged horizontally, and a plurality of spiral rings are arranged on the gyrotron.

[0012] As a further solution of the utility model: a sealing groove is provided at one end of the air inlet pipe and the air outlet pipe, and a sealing ring is embedded and installed in the sealing grooves of the air inlet pipe and the air outlet pipe.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, fine filtering is performed through the fine filter mesh inside the air outlet pipe to avoid clogging of the fine filter mesh, reduce pressure drop, and perform multiple filtering operations to ensure the gas filtering effect while reducing the gas pressure drop. The filtered gas is introduced into the vortex tube through the wind collecting hopper, and the connector connected to the vortex tube is connected to the air collection end of the detection equipment. The wind collecting hopper reduces the introduction amount of high-speed exhaust gas, and the exhaust gas is spirally decelerated in the vortex tube to further reduce the exhaust gas flow rate. The exhaust gas after filtration is passed into the detection equipment to complete the detection, thereby avoiding the influence of impurities in the exhaust gas on the detection and effectively reducing the gas flow rate to avoid the impact of high-speed exhaust gas on the detection equipment.

[0015] 2. In the utility model, the rear baffle is cone-shaped, and the cone-shaped rear baffle cooperates with the matching front baffle to allow the inclined end surface to contact with large-particle impurities, thereby slowing down the large-particle matter and sinking to gather at the bottom. A storage box is welded to the bottom of the air expansion pipe, and the bottom of the storage box is open. A sealing plate is bolted to the bottom open end of the storage box. The storage box welded at the bottom of the air expansion pipe gathers large-particle solid matter, and the sealing plate seals the bottom of the storage box for convenient and timely cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall explosion structure of the utility model;

[0018] Figure 3 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0019] Figure 4 It is a schematic diagram of the overall cross-sectional structure of the utility model.

[0020] In the figure: 1. air expansion pipe; 2. air inlet pipe; 3. front baffle; 4. diverter cone; 5. rear baffle; 6. material storage box; 7. sealing plate; 8. coarse filter; 9. sealing cover; 10. air outlet pipe; 11. hoop; 12. fine filter; 13. air collecting scoop; 14. gyrotube; 15. connector; 16. sealing ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example:

[0023] See also Figure 1-Figure 4In the embodiment of the utility model, a filter for detecting exhaust gas components includes an air expansion pipe 1 and an air outlet pipe 10. The diameter of the air expansion pipe 1 is larger than the diameter of the air outlet pipe 10. One end of the air expansion pipe 1 is connected to an air inlet pipe 2. A front baffle plate 3 is welded to one end of the inner part of the air expansion pipe 1. The front baffle plate 3 is conical. A rear baffle plate 5 is welded to the inner wall of the air expansion pipe 1. A through groove is opened in the middle of the rear baffle plate 5. A coarse filter screen 8 is installed in the air expansion pipe 1. The open end of the air expansion pipe 1 is bolted with a sealing cover 9. The air outlet end of the sealing cover 9 is clamped with the air outlet pipe 10. The connection end of the air outlet pipe 10 A hoop 11 is installed, a fine filter 12 is installed inside the air outlet pipe 10, a wind collecting bucket 13 is welded to the inner wall of the air outlet end of the air outlet pipe 10, the wind collecting bucket 13 is connected to the vortex pipe 14, the vortex pipe 14 penetrates the inner wall of the air outlet pipe 10, one end of the vortex pipe 14 is connected to a connector 15, one end of the expansion pipe 1 is connected to the intake pipe 2, the intake pipe 2 is connected to the exhaust pipe, the intake pipe 2 introduces the exhaust gas, the expansion pipe 1 has a large diameter, the exhaust gas is decelerated, the large particles in the exhaust gas, the exhaust gas particles contact the front baffle 3 at the front end to slow down, and the subsequent debris particles contact the rear baffle 5 at the rear end The exhaust gas collides and decelerates multiple times in the S-shaped channel formed between the front baffle 3 and the rear baffle 5, allowing large particles of debris to gather at the bottom. The exhaust gas pre-treated with large particles of debris at the front end flows through the middle of the rear baffle 5 and undergoes secondary coarse filtration through the coarse filter 8 to perform centralized filtration treatment of large and small particles. The pre-treated exhaust gas can prevent large particles from clogging the coarse filter 8, and the large particles of debris that collide and decelerate can avoid gas pressure drop. The treated exhaust gas passes into the outlet pipe 10, and the fine filter 12 inside the outlet pipe 10 performs fine filtration to avoid clogging the fine filter 12, thereby reducing Pressure drop, multiple filtering operations, while ensuring the reduction of gas pressure drop and ensuring the gas filtering effect, the filtered gas is introduced into the vortex tube 14 through the wind collecting hopper 13, the connector 15 connected to the vortex tube 14 is connected to the air collection end of the detection equipment, the wind collecting hopper 13 reduces the introduction of high-speed exhaust gas, and the exhaust gas is spirally decelerated in the vortex tube 14, further reducing the exhaust gas flow rate, the exhaust gas after filtration is passed into the detection equipment to complete the detection, avoiding the impact of impurities in the exhaust gas on the detection while effectively reducing the gas flow rate, avoiding the impact of high-speed exhaust gas on the detection equipment, and the use effect is good.

[0024] Preferably, Figure 4 As shown, a diverter cone 4 is integrally formed in the middle of the front baffle 3, and the front baffle 3 and the air diffuser 1 are arranged on the same axis. The diverter cone 4 is integrally formed at one end of the front baffle 3 to divert the exhaust gas in the middle, so that the exhaust gas is evenly distributed around the front baffle 3. The front baffle 3 on the same axis of the air diffuser 1 ensures uniform edge diversion of the gas.

[0025] Preferably, Figure 4 As shown, the rear baffle plate 5 is cone-shaped and is arranged parallel to the front baffle plate 3. The cone-shaped rear baffle plate 5 cooperates with the matching front baffle plate 3 to allow the inclined end surface to contact with large particles of impurities, thereby slowing down the large particles and sinking them for bottom aggregation.

[0026] Preferably, Figure 2 and Figure 4 As shown, a storage box 6 is welded to the bottom of the air expansion pipe 1, and the bottom of the storage box 6 is open. A sealing plate 7 is bolted to the bottom open end of the storage box 6. The storage box 6 welded to the bottom of the air expansion pipe 1 is used to gather large particles of solid matter, and the sealing plate 7 seals the bottom end of the storage box 6.

[0027] Preferably, Figure 2 and Figure 4 As shown, the storage box 6 is trapezoidal, and a square groove is provided at the bottom of the storage box 6. The groove at the bottom of the storage box 6 matches the sealing plate 7. The trapezoidal storage box 6 facilitates the gathering of the bottom end of the granular material and facilitates the extraction of the granular material from the square groove at the bottom of the storage box 6.

[0028] Preferably, Figure 2 and Figure 3 As shown, the wind collecting scoop 13 is horizontally arranged, and a plurality of spiral rings are arranged on the gyrotron 14. The horizontally arranged wind collecting scoop 13 facilitates the introduction of exhaust gas, and the plurality of spiral rings of the gyrotron 14 decelerate the exhaust gas to ensure the deceleration effect.

[0029] Preferably, Figure 1 and Figure 2 As shown, sealing grooves are provided at one end of the air inlet pipe 2 and the air outlet pipe 10, and sealing rings 16 are embedded in the sealing grooves of the air inlet pipe 2 and the air outlet pipe 10. The sealing grooves provided in the air inlet pipe 2 and the air outlet pipe 10 are used to install the sealing rings 16, and the sealing of the exhaust gas pipe is ensured by the sealing rings 16.

[0030] The working principle of the utility model is as follows: an intake pipe 2 is connected to one end of an air expansion pipe 1, and the intake pipe 2 is connected to an exhaust pipe. The exhaust gas is introduced into the intake pipe 2, and the air expansion pipe 1 has a large diameter to reduce the speed of the exhaust gas. Large particles of debris in the exhaust gas and the exhaust gas particles contact with the front baffle plate 3 at the front end to slow down. Subsequent debris particles contact with the rear baffle plate 5 at the rear end. The exhaust gas forms an S-shaped channel between the front baffle plate 3 and the rear baffle plate 5 to collide and decelerate multiple times, allowing large particles of debris to gather at the bottom. The exhaust gas pretreated with large particles of debris at the front end flows through the middle of the rear baffle plate 5 and is subjected to secondary coarse filtration through the coarse filter screen 8 to perform centralized filtration treatment of large particles and small particles. The pretreated exhaust gas can avoid large particles from clogging the coarse filter screen 8, and the large particles of debris that collide and slow down can be prevented from clogging the coarse filter screen 8. In order to avoid gas pressure drop, the treated exhaust gas is passed into the exhaust pipe 10, and the fine filter 12 inside the exhaust pipe 10 is finely filtered to avoid clogging the fine filter 12 and reduce the pressure drop. Multiple filtering operations are performed to ensure the gas filtration effect while reducing the gas pressure drop. The filtered gas is introduced into the vortex tube 14 through the wind collecting hopper 13. The connector 15 connected to the vortex tube 14 is connected to the air collection end of the detection equipment. The wind collecting hopper 13 reduces the introduction amount of high-speed exhaust gas, and the exhaust gas is spirally decelerated in the vortex tube 14 to further reduce the exhaust gas flow rate. The exhaust gas after filtration is passed into the detection equipment to complete the detection, thereby avoiding the influence of impurities in the exhaust gas on the detection and effectively reducing the gas flow rate to avoid the impact of high-speed exhaust gas on the detection equipment, and the use effect is good.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A filter for detecting exhaust gas components, comprising an air expansion pipe (1) and an air outlet pipe (10), wherein the diameter of the air expansion pipe (1) is larger than the diameter of the air outlet pipe (10), and characterized in that: One end of the air expansion pipe (1) is connected to an air inlet pipe (2), one end of the interior of the air expansion pipe (1) is welded with a front baffle (3), the front baffle (3) is conical, the inner wall of the air expansion pipe (1) is welded with a rear baffle (5), the middle part of the rear baffle (5) is provided with a through groove, a coarse filter (8) is installed in the air expansion pipe (1), the open end of the air expansion pipe (1) is bolted with a sealing cover (9), the air outlet end of the sealing cover (9) is clamped with an air outlet pipe (10), the connecting end of the air outlet pipe (10) is installed with a hoop (11), a fine filter (12) is installed inside the air outlet pipe (10), an air collecting scoop (13) is welded to the inner wall of the air outlet end of the air outlet pipe (10), the air collecting scoop (13) is connected to a vortex pipe (14), the vortex pipe (14) passes through the inner wall of the air outlet pipe (10), and one end of the vortex pipe (14) is connected to a connector (15).

2. A filter for exhaust gas component detection according to claim 1, characterized in that: A splitter cone (4) is integrally formed in the middle of the front baffle plate (3), and the front baffle plate (3) and the air expansion pipe (1) are arranged on the same axis.

3. A filter for exhaust gas component detection according to claim 1, characterized in that: The rear baffle (5) is cone-shaped and is arranged parallel to the front baffle (3).

4. A filter for exhaust gas component detection according to claim 1, characterized in that: A material storage box (6) is welded to the bottom of the gas expansion pipe (1); the bottom of the material storage box (6) is open; and a sealing plate (7) is bolted to the open end of the bottom of the material storage box (6).

5. A filter for exhaust gas component detection according to claim 4, characterized in that: The material storage box (6) is trapezoidal in shape, and a square groove is provided at the bottom of the material storage box (6), and the groove at the bottom of the material storage box (6) matches the sealing plate (7).

6. A filter for exhaust gas component detection according to claim 1, characterized in that: The wind collecting scoop (13) is arranged horizontally, and the gyrotron (14) is provided with a plurality of spiral rings.

7. The filter for exhaust gas component detection according to claim 1, characterized in that: A sealing groove is provided at one end of the air inlet pipe (2) and the air outlet pipe (10), and a sealing ring (16) is embedded and installed in the sealing grooves of the air inlet pipe (2) and the air outlet pipe (10).

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