Waste gas detection pretreatment device

Abstract

The utility model belongs to the technical field of waste gas detection pretreatment, and particularly relates to a waste gas detection pretreatment device which comprises a mounting seat, a filter plate is fixedly mounted on the inner wall of a sampling tube and assembled in a mounting groove, a pulse electromagnet is assembled in a placement groove and is of an annular structure, and a sampling tube is arranged on the mounting seat. An iron sheet is installed on the side wall of the sampling pipe and is of an annular structure, multiple sets of springs are installed between the side wall of the sampling pipe and the inner wall of the installation groove, the iron sheet drives the sampling pipe to move towards the pulse electromagnet at the moment that the pulse electromagnet generates magnetic force, then the magnetic force disappears, and the springs push the sampling pipe to move away from the pulse electromagnet. Due to the fact that the switching frequency of generation and disappearance of the magnetic field is extremely high, the sampling pipe generates high-frequency vibration, dust particles attached to the inner wall of the sampling pipe fall off in the high-frequency vibration process of the sampling pipe, cleaning of the inner wall of the sampling pipe is achieved, and convenience of cleaning of the sampling pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas detection pretreatment, in particular to a waste gas detection pretreatment device. Background Art

[0002] A large amount of waste gas will be generated in industrial production. The country has formulated strict emission standards for waste gas generated in industrial production. Enterprises are required to treat toxic and harmful gases mixed in the waste gas before they can be discharged. Therefore, it is necessary to sample and test the waste gas at any time. During the sampling and testing process, in order to remove interference factors, a pretreatment device is needed to treat the waste gas.

[0003] A Chinese patent with the publication number CN217483984U discloses a RTO waste gas concentration detection pretreatment device, including a sampling probe, an inlet ball valve, a ceramic filter, a dehumidifier, a three-way switching valve, a membrane filter, a detection instrument and a jet pump connected in sequence, the dehumidifier is controlled by a control system box; the control system box includes a compressed gas inlet and a drainage outlet, the compressed gas inlet is connected to the solenoid valve, the compressed gas outlet and the vortex refrigerator in sequence, and the drainage outlet is connected to the peristaltic pump and the drainage pipe in sequence, which relates to the technical field of RTO waste gas concentration detection. The utility model uses the sampling probe and the jet pump to make the waste gas pass through the ceramic filter, the dehumidifier and the membrane filter in sequence to discharge the moisture, acidic gas and dust in the waste gas, so as to prevent these impurities in the waste gas from entering the LEL online detection device and causing adverse effects on it, thereby ensuring the service life of the LEL online detection device.

[0004] In the process of treating exhaust gas by the existing pretreatment device, dust particles mixed in the exhaust gas are easily attached to the inner wall of the sampling tube and cannot be easily cleaned. As the dust in the sampling tube continues to accumulate, it is easy to affect the effect of the pretreatment, resulting in poor convenience in cleaning the sampling tube. Therefore, an exhaust gas detection pretreatment device is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the problems existing in the prior art, the utility model proposes an exhaust gas detection pretreatment device.

[0006] The technical solution adopted by the utility model to solve its technical problems is: an exhaust gas detection pretreatment device described in the utility model comprises a mounting seat, a first vent hole is provided on the mounting seat, a mounting groove is provided on the mounting seat, a connecting groove is provided on the inner wall of the mounting groove, a connecting ring is installed on the connecting groove, a sampling tube is installed on the inner wall of the connecting ring, a filter plate is fixedly installed on the inner wall of the sampling tube, the filter plate is assembled in the mounting groove, a partition is installed on the inner wall of the sampling tube, the partition is an annular structure, the outer wall of the partition is in contact with the inner wall of the first vent hole of the mounting seat, a placement groove is provided on the mounting seat, a pulse electromagnet is assembled in the placement groove, the pulse electromagnet is an annular structure, An iron sheet is installed on the side wall of the sampling tube, and the iron sheet is an annular structure. Multiple groups of springs are installed between the side wall of the sampling tube and the inner wall of the mounting groove, and the angle between two adjacent groups of springs is 45°. A control panel is installed on the mounting seat, and the control panel is connected to the pulse electromagnet through an internal circuit. At the moment when the pulse electromagnet generates magnetic force, the iron sheet drives the sampling tube to move toward the pulse electromagnet, and then the magnetic force disappears, and the spring pushes the sampling tube to move away from the pulse electromagnet. Since the switching frequency of the magnetic field generation and disappearance is extremely high, the sampling tube generates high-frequency vibration. During the high-frequency vibration of the sampling tube, the dust particles attached to the inner wall of the sampling tube fall off, thereby realizing the cleaning of the inner wall of the sampling tube, which is beneficial to improving the convenience of cleaning the sampling tube.

[0007] Preferably, an air filter box is installed on the side wall of the mounting seat, and the air filter box includes two groups of box bodies, one of which is fixedly connected to the mounting seat, and a second air vent and a third air vent are respectively provided on the front and rear plates of the box body, and a card slot is provided inside the box body, and a filter element is installed in the card slot, and the filter element is a cylindrical structure, a connecting plate is installed on the side wall of the box body, a screw hole is provided on the connecting plate, and a bolt is installed on the connecting plate, and a sealing gasket is installed on the box body, and a hose is installed on the other side of the box body, and a gas analyzer is connected to the other end of the hose, and the exhaust gas enters the sampling tube. When passing through the filter plate, the filter plate filters large particles such as dust in the exhaust gas, and then the exhaust gas passes through the filter element, and the filter element filters small particles such as dust in the exhaust gas. At the same time, the filter element absorbs moisture in the exhaust gas, thereby realizing exhaust gas dust removal and water removal treatment, and realizing pretreatment of the exhaust gas, which is beneficial to improving the purity of the exhaust gas.

[0008] The utility model is beneficial in that:

[0009] 1. In the utility model, at the moment when the pulse electromagnet generates magnetic force, the iron sheet drives the sampling tube to move toward the pulse electromagnet, and then the magnetic force disappears, and the spring pushes the sampling tube to move away from the pulse electromagnet. Since the switching frequency of the generation and disappearance of the magnetic field is extremely high, the sampling tube generates high-frequency vibration. During the high-frequency vibration of the sampling tube, dust particles attached to the inner wall of the sampling tube fall off, thereby realizing the cleaning of the inner wall of the sampling tube, which is beneficial to improving the convenience of cleaning the sampling tube.

[0010] 2. The utility model allows the exhaust gas to enter the sampling tube. When passing through the filter plate, the filter plate filters large particles such as dust in the exhaust gas. Then the exhaust gas passes through the filter element, and the filter element filters small particles such as dust in the exhaust gas. At the same time, the filter element absorbs moisture in the exhaust gas, thereby realizing dust removal and water removal of the exhaust gas, realizing pre-treatment of the exhaust gas, and being beneficial to improving the purity of the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0012] Figure 1 It is a schematic diagram of a three-dimensional structure from a first-person perspective;

[0013] Figure 2 It is a schematic diagram of the three-dimensional structure of the pretreatment component;

[0014] Figure 3 It is a schematic diagram of the three-dimensional structure of the side cross section of the sampling tube;

[0015] Figure 4 It is a schematic diagram of the three-dimensional structure of the box body.

[0016] In the figure: 1. mounting seat; 2. first air vent; 3. mounting slot; 4. connecting slot; 5. connecting ring; 6. sampling tube; 7. filter plate; 8. partition; 9. placement slot; 10. pulse electromagnet; 11. iron sheet; 12. spring; 13. box body; 14. second air vent; 15. third air vent; 16. slot; 17. filter element; 18. connecting plate; 19. screw hole; 20. sealing gasket; 21. hose; 22. gas analyzer; 23. control panel. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figure 1-4 As shown, an exhaust gas detection pretreatment device includes a mounting seat 1, a first vent hole 2 is opened on the mounting seat 1, a mounting groove 3 is opened on the mounting seat 1, a connecting groove 4 is opened on the inner wall of the mounting groove 3, a connecting ring 5 is installed on the connecting groove 4, a sampling tube 6 is installed on the inner wall of the connecting ring 5, a filter plate 7 is fixedly installed on the inner wall of the sampling tube 6, the filter plate 7 is assembled in the mounting groove 3, a partition 8 is installed on the inner wall of the sampling tube 6, the partition 8 is an annular structure, the outer wall of the partition 8 is in contact with the inner wall of the first vent hole 2 of the mounting seat 1, a placement groove 9 is opened on the mounting seat 1, and a pulse electromagnet 10 is assembled in the placement groove 9 The pulse electromagnet 10 is an annular structure, an iron sheet 11 is installed on the side wall of the sampling tube 6, and the iron sheet 11 is an annular structure. Multiple groups of springs 12 are installed between the side wall of the sampling tube 6 and the inner wall of the mounting groove 3, and the angle between two adjacent groups of springs 12 is 45°. A control panel 23 is installed on the mounting seat 1, and the control panel 23 is connected to the pulse electromagnet 10 through an internal circuit. An air filter box is installed on the side wall of the mounting seat 1, and the air filter box includes two groups of box bodies 13, one of which is fixedly connected to the mounting seat 1, and a second vent 14 and a third vent 15 are respectively opened on the front and rear plates of the box body 13. The box body 13 A card slot 16 is provided inside, and a filter element 17 is installed in the card slot 16. The filter element 17 is a cylindrical structure. A connecting plate 18 is installed on the side wall of the box body 13. A screw hole 19 is provided on the connecting plate 18. Bolts are installed on the connecting plate 18. A sealing gasket 20 is installed on the box body 13. A hose 21 is installed on the other side of the box body 13. The other end of the hose 21 is connected to a gas analyzer 22. When working, in the process of treating the exhaust gas by the existing pretreatment device, the dust particles mixed in the exhaust gas are easy to adhere to the inner wall of the sampling tube 6 and cannot be easily cleaned. As the dust in the sampling tube 6 continues to accumulate, it is easy to The effect of pretreatment is affected, resulting in poor convenience for cleaning the sampling tube 6. When the exhaust gas enters the sampling tube 6 and passes through the filter plate 7, the filter plate 7 filters large particles such as dust in the exhaust gas. Then the exhaust gas passes through the filter element 17. The filter element 17 filters small particles such as dust in the exhaust gas. At the same time, the filter element 17 absorbs moisture in the exhaust gas, thereby achieving exhaust gas dust removal and water removal, and achieving pretreatment of the exhaust gas. Then, the exhaust gas enters the gas analyzer 22 from the hose 21. The model of the gas analyzer 22 is JY808, and the gas analyzer 22 detects the exhaust gas.

[0019] When cleaning the dust particles attached to the inner wall of the sampling tube 6, a sinusoidal current is passed through the wire into the pulse electromagnet 10 through the control panel 23, so that the pulse electromagnet 10 is magnetized, and the alternating current switches between positive and negative half cycles. At the moment when the positive and negative half cycles of the alternating current are switched, the current disappears. The frequency of switching between the positive and negative half cycles of the alternating current is very high, so the frequency of the magnetic field generated by the pulse electromagnet 10 is also very high, and the magnetic force generated by the pulse electromagnet 10 is also instantaneous. The moment the pulse electromagnet 10 generates magnetic force, it attracts the iron sheet 11 to move toward the pulse electromagnet 10, and the iron sheet 11 drives the sampling tube 6 to move toward the pulse electromagnet 10, and then the magnetic force disappears. Under the thrust of the spring 12, the spring 12 pushes the sampling tube 6 away from the pulse electromagnet 10. Since the switching frequency of the generation and disappearance of the magnetic field is extremely high, the sampling tube 6 generates high-frequency vibration. During the high-frequency vibration of the sampling tube 6, the dust particles attached to the inner wall of the sampling tube 6 fall off, thereby realizing the cleaning of the inner wall of the sampling tube 6, which is conducive to improving the convenience of cleaning the sampling tube 6.

[0020] Working principle: in the process of treating the exhaust gas by the existing pretreatment device, the dust particles mixed in the exhaust gas are easy to adhere to the inner wall of the sampling tube 6 and cannot be easily cleaned. With the continuous accumulation of dust in the sampling tube 6, it is easy to affect the effect of the pretreatment, resulting in poor convenience in cleaning the sampling tube 6. The exhaust gas enters the sampling tube 6 and passes through the filter plate 7. The filter plate 7 filters large particles such as dust in the exhaust gas. Then the exhaust gas passes through the filter element 17. The filter element 17 filters small particles such as dust in the exhaust gas. At the same time, the filter element 17 absorbs moisture in the exhaust gas, thereby realizing exhaust gas dust removal and water removal, and realizing the pretreatment of the exhaust gas. Then the exhaust gas enters the gas analyzer 22 from the hose 21. The model of the gas analyzer 22 is JY808, and the gas analyzer 22 detects the exhaust gas. When cleaning the dust particles attached to the inner wall of the sampling tube 6, the sinusoidal electric current is turned on through the control panel 23. The current is passed into the pulse electromagnet 10 through the wire, so that the pulse electromagnet 10 is magnetized, and the alternating current will switch between positive and negative half cycles. Whenever the positive and negative half cycles of the alternating current are switched, the current disappears. The frequency of switching between the positive and negative half cycles of the alternating current is very high, so the frequency of the magnetic field generated by the pulse electromagnet 10 is also very high, and the magnetic force generated by the pulse electromagnet 10 is also instantaneous. The moment the pulse electromagnet 10 generates magnetic force, it attracts the iron sheet 11 to move toward the pulse electromagnet 10, and the iron sheet 11 drives the sampling tube 6 to move toward the pulse electromagnet 10, and then the magnetic force disappears. Under the thrust of the spring 12, the spring 12 pushes the sampling tube 6 away from the pulse electromagnet 10. Since the switching frequency of the generation and disappearance of the magnetic field is extremely high, the sampling tube 6 generates high-frequency vibration. During the high-frequency vibration of the sampling tube 6, the dust particles attached to the inner wall of the sampling tube 6 fall off, thereby realizing the cleaning of the inner wall of the sampling tube 6, which is conducive to improving the convenience of cleaning the sampling tube 6.

[0021] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An exhaust gas detection pretreatment device, characterized in that: The invention comprises a mounting seat (1), wherein the mounting seat (1) is provided with a first vent hole (2), the mounting seat (1) is provided with a mounting groove (3), the inner wall of the mounting groove (3) is provided with a connecting groove (4), a connecting ring (5) is installed on the connecting groove (4), a sampling tube (6) is installed on the inner wall of the connecting ring (5), a filter plate (7) is fixedly installed on the inner wall of the sampling tube (6), the filter plate (7) is assembled in the mounting groove (3), a partition plate (8) is installed on the inner wall of the sampling tube (6), and the partition plate (8) is The invention relates to a ring-shaped structure, wherein the outer wall of the partition (8) is in contact with the inner wall of the first vent hole (2) of the mounting seat (1), the mounting seat (1) is provided with a placement groove (9), a pulse electromagnet (10) is installed in the placement groove (9), and the pulse electromagnet (10) is a ring-shaped structure. An iron sheet (11) is installed on the side wall of the sampling tube (6), and the iron sheet (11) is a ring-shaped structure. A plurality of groups of springs (12) are installed between the side wall of the sampling tube (6) and the inner wall of the mounting groove (3), and the angle between two adjacent groups of springs (12) is 45°.

2. The exhaust gas detection pretreatment device according to claim 1, characterized in that: A control panel (23) is mounted on the mounting seat (1), and the control panel (23) is connected to the pulse electromagnet (10) via an internal circuit.

3. The exhaust gas detection pretreatment device according to claim 1, characterized in that: An air filter box is mounted on the side wall of the mounting seat (1), the air filter box comprising two sets of box bodies (13), one of the box bodies (13) being fixedly connected to the mounting seat (1), and a second vent hole (14) and a third vent hole (15) are respectively provided on the front and rear plates of the box body (13).

4. The exhaust gas detection pretreatment device according to claim 3, characterized in that: A card slot (16) is provided inside the box body (13), a filter core (17) is installed inside the card slot (16), and the filter core (17) is a cylindrical structure.

5. The exhaust gas detection pretreatment device according to claim 3, characterized in that: A connecting plate (18) is installed on the side wall of the box body (13), a screw hole (19) is opened on the connecting plate (18), a bolt is installed on the connecting plate (18), and a sealing gasket (20) is installed on the box body (13).

6. The exhaust gas detection pretreatment device according to claim 3, characterized in that: A hose (21) is installed on the other side of the box body (13), and the other end of the hose (21) is connected to a gas analyzer (22).

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