Waste gas detecting and filtering device

Abstract

The utility model relates to a waste gas detecting and filtering device which comprises a filtering bin, and two ends of the filtering bin are respectively connected with a gas inlet pipe and a gas outlet pipe; the gas sensitive element is arranged on the side, close to the gas outlet pipe, of the filtering bin, and the peripheral side of the gas sensitive element is fixedly connected with the inner side wall of the filtering bin through a connecting rod. The utility model relates to the technical field of waste gas filtration. According to the waste gas detecting and filtering device, through the arranged vibration piece, the filter element can be impacted when the filter element is blocked, so that dust is vibrated off, the self-purification effect of the filter element is achieved, the service life of the filter element can be effectively prolonged, the maintenance frequency of the waste gas detecting and filtering device is reduced, and therefore the use cost of the waste gas detecting and filtering device is reduced; the practicability of the waste gas detecting and filtering device can be greatly improved.

Description

Technical Field

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

[0002] Industrial waste gas testing includes both organic and inorganic waste gases. Organic waste gases primarily include various hydrocarbons, alcohols, aldehydes, acids, ketones, and amines; inorganic waste gases primarily include sulfur oxides, nitrogen oxides, carbon oxides, halogens, and their compounds. Treatment methods for industrial waste gases vary depending on their exhaust volume, temperature, concentration, and chemical and physical properties.

[0003] In the existing technology, industrial waste gas contains a large amount of dust. When the waste gas is detected, the dust-filled gas will adhere to the surface of the sensor when it comes into contact with the sensor, resulting in a reduction in the exposed surface of the sensor and the contact area between the sensor and the waste gas. As a result, the sensor surface is covered with dust, affecting the waste gas detection of the gas sensor. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an exhaust gas detection and filtering device to solve the technical problems mentioned in the above background technology.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] An exhaust gas detection and filtering device comprises a filter chamber, with an air inlet pipe and an air outlet pipe connected to both ends of the filter chamber respectively;

[0007] The gas sensor is arranged on a side of the filter chamber close to the air outlet pipe, and the outer peripheral side of the gas sensor is fixedly connected to the inner side wall of the filter chamber through a connecting rod;

[0008] The filter assembly includes a filter element, a sleeve and a vibrating element. The sleeve is arranged on the side of the gas sensor away from the air outlet pipe. The outer wall of the sleeve is fixedly connected to the inner wall of the filter chamber. The inner wall of the sleeve is provided with a slide groove. The filter element is slidably arranged in the slide groove. The vibrating element is arranged between the side of the filter element close to the gas sensor and the side wall of the slide groove.

[0009] The vibrating element includes a main sleeve, a secondary sleeve, a piston and a push rod. The main sleeve and the secondary sleeve have opposing openings and are fixedly connected to the side walls of the chute and the side walls of the filter element, respectively. The secondary sleeve is slidably arranged in the main sleeve.

[0010] A piston is slidably connected inside the main sleeve, a spring is arranged between the side of the piston away from the auxiliary sleeve and the main sleeve, the side of the piston close to the auxiliary sleeve is ball-connected to a push rod, and a limiting ring for squeezing the push rod is fixedly connected to the inner wall of the auxiliary sleeve near the barrel mouth.

[0011] Furthermore, the filter bin is located between the air inlet pipe and the filter assembly and is fixedly connected to a dust box at the bottom of the outer peripheral side thereof. A notch for cleaning dust is provided at the bottom of the dust box, and a cover plate is sealedly connected to the notch.

[0012] Furthermore, the dust collecting box is provided with an inclined surface at the top of the inner side wall close to the sleeve, and the bottom of the sleeve is provided with a dust discharge groove connected with the chute at the inclined surface.

[0013] Furthermore, annular grooves are provided at the left and right edges of the outer side wall of the filter element, and a sealing ring is provided in the annular groove to contact the inner wall of the sliding groove.

[0014] Furthermore, the bottom of the inner wall of the main sleeve is fixedly connected to a limiting block, the top surface of the limiting block and the bottom surface of the inner wall of the limiting ring are at the same horizontal height, and an avoidance groove is provided on the side of the auxiliary sleeve close to the limiting block.

[0015] Furthermore, when the piston is blocked by the limiting block, the end of the push rod is separated from the limiting ring.

[0016] In summary, the present invention has at least one of the following beneficial technical effects:

[0017] 1. This exhaust gas detection filter device, through the provision of a vibration element, can impact the filter element when the filter element is clogged to shake off dust, thereby achieving the self-purification function of the filter element. This can effectively extend the service life of the filter element, reduce the maintenance frequency of the exhaust gas detection filter device, thereby reducing the cost of the exhaust gas detection filter device and significantly improving the practicality of the exhaust gas detection filter device.

[0018] 2. This exhaust gas detection and filtering device can collect the dust intercepted by the filter element through the provided dust collection box, which is convenient for cleaning during the maintenance of the exhaust gas detection and filtering device. It can greatly reduce the maintenance difficulty of the exhaust gas detection and filtering device, improve the maintenance efficiency of the exhaust gas detection and filtering device, thereby reducing the downtime of the exhaust gas detection and filtering device, thereby improving the exhaust gas detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a structural diagram of an exhaust gas detection and filtering device of the present utility model.

[0021] Figure 2This is a schematic diagram of the internal structure of an exhaust gas detection and filtering device of the present invention.

[0022] Figure 3 This is a side view of an exhaust gas detection and filtering device of the present invention.

[0023] Figure 4 This is a schematic structural diagram of a vibrating component in an exhaust gas detection and filtering device of the present invention.

[0024] Figure 5 This is a schematic diagram of the structure of a vibrating member in an exhaust gas detection and filtering device of the present invention during impact.

[0025] In the figure, 1. filter chamber; 2. gas sensor; 3. filter assembly; 31. filter element; 32. sleeve; 33. vibrating element; 331. main sleeve; 332. auxiliary sleeve; 333. piston; 334. push rod; 4. air inlet pipe; 5. air outlet pipe; 6. connecting rod; 7. slide groove; 8. spring; 9. limit ring; 10. dust collection box; 11. cover plate; 12. inclined surface; 13. dust discharge chute; 14. circular groove; 15. sealing ring; 16. slide rail; 17. limit block; 18. avoidance groove. DETAILED DESCRIPTION

[0026] The present invention will be described in further detail below with reference to the accompanying drawings.

[0027] Example:

[0028] Reference Figure 1 - Figure 5 The utility model discloses an exhaust gas detection and filtering device, comprising a filter chamber 1, with an air inlet pipe 4 and an air outlet pipe 5 connected to both ends of the filter chamber 1;

[0029] The gas sensor 2 is arranged on a side of the filter chamber 1 close to the air outlet pipe 5, and the outer peripheral side of the gas sensor 2 is fixedly connected to the inner side wall of the filter chamber 1 through a connecting rod 6;

[0030] The filter assembly 3 includes a filter element 31, a sleeve 32, and a vibrating element 33. The sleeve 32 is arranged on the side of the gas sensor 2 away from the air outlet pipe 5. The outer wall of the sleeve 32 is fixedly connected to the inner wall of the filter chamber 1. The inner wall of the sleeve 32 is provided with a chute 7. The filter element 31 is slidably arranged in the chute 7. The vibrating element 33 is provided between the side of the filter element 31 close to the gas sensor 2 and the side wall of the chute 7.

[0031] The vibrating member 33 includes a main sleeve 331, a secondary sleeve 332, a piston 333, and a push rod 334. The main sleeve 331 and the secondary sleeve 332 have opposing openings and are fixedly connected to the side walls of the chute 7 and the side walls of the filter element 31, respectively. The secondary sleeve 332 is slidably disposed within the main sleeve 331.

[0032] A piston 333 is slidably connected inside the main sleeve 331, and a spring 8 is provided between the side of the piston 333 away from the auxiliary sleeve 332 and the main sleeve 331. The side of the piston 333 close to the auxiliary sleeve 332 is spherically connected to the push rod 334, and a limiting ring 9 for squeezing the push rod 334 is fixedly connected to the inner wall of the auxiliary sleeve 332 near the barrel mouth.

[0033] In this embodiment, the observation Figure 1 It can be found that when the exhaust gas detection filter device is used, the exhaust gas can be input into the filter chamber 1 through the air inlet pipe 4, and then the exhaust gas can be observed. Figure 2 It can be found that the exhaust gas entering the filter chamber 1 will first contact the filter assembly 3, and the dust particles in the exhaust gas will be intercepted by the filter element 31 in the filter assembly 3, so that the dust particles will not adhere to the surface of the gas sensor 2 when detecting the exhaust gas, which can effectively improve the detection accuracy of the gas sensor 2.

[0034] As the amount of exhaust gas filtered by the filter element 31 increases, the mesh of the filter element 31 will gradually be clogged by dust particles, reducing the cross-section through which the gas can pass, thereby slowing down the exhaust gas passing efficiency and further affecting the detection of the exhaust gas. Figure 3 - Figure 5 It can be found that a sleeve 32 is fixedly connected to the inner wall of the filter bin 1, and the filter element 31 is slidably set in the sleeve 32, and then a vibrating member 33 is set on the side of the filter element 31 close to the gas sensor 2. When the filter element 31 is blocked and the air pressure at the intake pipe 4 increases, the filter element 31 can be pushed to slide in the slide groove 7 of the sleeve 32, so that the filter element 31 slides in the main sleeve 331 with the auxiliary sleeve 332, and then the limiting ring 9 in the auxiliary sleeve 332 will squeeze the push rod 334, so that the push rod 334 pushes the piston 333 to slide in the main sleeve 331, thereby squeezing the spring 8 and causing the spring 8 to deform and accumulate potential energy until the push rod 334 is inserted into the limiting ring 9 (as shown in FIG. Figure 5 As shown), the piston 333 loses its compression, and the spring 8 releases its elastic force to push the piston 333 to impact the auxiliary sleeve 332, so that the filter element 31 connected to the auxiliary sleeve 332 is impacted, thereby shaking off the dust blocked in the filter element 31, thereby purifying the filter element 31.

[0035] observe Figure 3 It can be found that there are multiple vibration members 33, so that when the piston 333 impacts the auxiliary sleeve 332 synchronously, the auxiliary sleeve 332 can be pushed away, so that the auxiliary sleeve 332 pushes the filter element 31 away from the main sleeve 331. At this time, the push rod 334 inserted into the limiting ring 9 will extend out of the limiting ring 9, so that after the filter element 31 is blocked, it can be pushed by the air pressure again with the limiting ring 9 to squeeze the push rod 334, so that the filter element 31 can stably self-purify, thereby effectively ensuring the filtering effect of the filter element 31.

[0036] By connecting the push rod 334 to the piston 333 ball, when the auxiliary sleeve 332 is pushed open by the piston 333 to separate the limiting ring 9 from the push rod 334, the push rod 334 loses its support and droops, thereby ensuring that when the auxiliary sleeve 332 brings the limiting ring 9 close to the piston 333, the limiting ring 9 can stably squeeze the push rod 334.

[0037] In a further preferred embodiment of the present invention, Figure 2 and Figure 3 As shown, the filter chamber 1 is located between the air inlet pipe 4 and the filter assembly 3 and is fixedly connected to a dust box 10 at the bottom of the outer peripheral side. A notch for cleaning dust is provided at the bottom of the dust box 10, and a cover plate 11 is sealed at the notch.

[0038] The dust box 10 has an inclined surface 12 at the top of the inner side wall close to the sleeve 32 , and the bottom of the sleeve 32 has an ash discharge groove 13 in communication with the chute 7 at the inclined surface 12 .

[0039] In this embodiment, a dust box 10 is provided at the bottom of the filter bin 1 to collect dust intercepted by the filter element 31, and a slot is provided at the bottom of the dust box 10 to clean dust, thereby facilitating maintenance of the exhaust gas detection filter device. Finally, the cover plate 11 sealed at the slot can prevent the exhaust gas detection filter device from leaking during use, causing exhaust gas to leak through the slot, thereby effectively ensuring the operational stability of the exhaust gas detection filter device.

[0040] When the dust attached to the filter element 31 is shaken off, a small amount of dust will directly fall into the chute 7, which affects the sliding of the filter element 31 in the chute 7. Figure 3 It can be found that a slope 12 is provided at the top of the inner wall of the dust box 10 near the sleeve 32, and a dust discharge groove 13 connected to the chute 7 is provided at the bottom of the sleeve 32 at the slope 12, so that the dust falling into the chute 7 will be pushed into the dust discharge groove 13 by the filter element 31 when the filter element 31 is reset, and then fall into the slope 12 through the dust discharge groove 13, and finally slide into the dust box 10 along the slope 12 to ensure the collection of dust.

[0041] In a further preferred embodiment of the present invention, Figure 4 As shown, annular grooves 14 are provided at the left and right edges of the outer wall of the filter element 31 , and a sealing ring 15 is provided in the annular groove 14 to contact the inner wall of the slide groove 7 .

[0042] In this embodiment, since the filter element 31 is slidably set in the slide groove 7 of the sleeve 32, there is a gap between the filter element 31 and the inner wall of the slide groove 7, which will cause the exhaust gas to carry dust through the gap and affect the filtering stability of the filter element 31.

[0043] Therefore, observe Figure 4 It can be found that annular grooves 14 are opened at the left and right edges of the top of the filter element 31, and a sealing ring 15 is provided in the annular groove 14 to contact the inner wall of the slide groove 7, which can effectively improve the sealing performance of the filter element 31 and the slide groove 7 and prevent dust from leaking through the gap.

[0044] In a further preferred embodiment of the present invention, Figure 4 and Figure 5 As shown, the bottom of the inner wall of the main sleeve 331 is fixedly connected to the limit block 17, the top surface of the limit block 17 is at the same level as the bottom surface of the inner wall of the limit ring 9, and the side of the secondary sleeve 332 close to the limit block 17 is provided with an avoidance groove 18;

[0045] When the piston 333 is blocked by the limiting block 17 , the end of the push rod 334 is separated from the limiting ring 9 .

[0046] In this embodiment, since the piston 333 is provided with a spring 8 on the side close to the main sleeve 331, the piston 333 will always be kept in contact with the secondary sleeve 332 under the push of the spring 8, which will affect the effect of the piston 333 impacting the secondary sleeve 332. Figure 4 It can be found that a limit block 17 is fixedly connected to the bottom of the inner wall of the main sleeve 331, and when the piston 333 moves, it will be blocked by the limit block 17, which can prevent the piston 333 from remaining in contact with the auxiliary sleeve 332, so as to ensure that the effect of the piston 333 impacting the auxiliary sleeve 332 to clean the filter element 31 can operate stably.

[0047] By making the top of the limit block 17 and the bottom surface of the inner wall of the limit ring 9 at the same horizontal height, when the limit ring 9 squeezes the push rod 334 to push the piston 333 to move, the push rod 334 will gradually approach the limit block 17 and be lifted up by the limit block 17, so that the end of the push rod 334 moves upward and is inserted into the limit ring 9, thereby releasing the piston 333 and impacting the auxiliary sleeve 332, which can further ensure the operating stability of the vibration member 33.

[0048] The embodiments of this specific implementation method are all preferred embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the scope of protection of the present utility model.

Claims

1. An exhaust gas detection and filtering device, characterized in that: It comprises a filter chamber (1), with an air inlet pipe (4) and an air outlet pipe (5) respectively connected to both ends of the filter chamber (1); A gas sensor (2) is arranged on a side of the filter chamber (1) close to the air outlet pipe (5), and the outer peripheral side of the gas sensor (2) is fixedly connected to the inner side wall of the filter chamber (1) via a connecting rod (6); A filter assembly (3) comprising a filter element (31), a sleeve (32) and a vibration element (33); the sleeve (32) is arranged on a side of the gas sensor (2) away from the air outlet pipe (5); the outer wall of the sleeve (32) is fixedly connected to the inner wall of the filter chamber (1); a chute (7) is provided on the inner wall of the sleeve (32); the filter element (31) is slidably arranged in the chute (7); and the vibration element (33) is provided between a side of the filter element (31) close to the gas sensor (2) and the side wall of the chute (7); The vibrating member (33) comprises a main sleeve (331), a secondary sleeve (332), a piston (333) and a push rod (334); the main sleeve (331) and the secondary sleeve (332) have their openings facing each other and are fixedly connected to the side walls of the chute (7) and the side walls of the filter element (31), respectively; the secondary sleeve (332) is slidably disposed in the main sleeve (331); A piston (333) is slidably connected in the main sleeve (331), a spring (8) is provided between the main sleeve (331) and the side of the piston (333) away from the auxiliary sleeve (332), a push rod (334) is spherically connected to the side of the piston (333) close to the auxiliary sleeve (332), and a limiting ring (9) for squeezing the push rod (334) is fixedly connected to the inner side wall of the auxiliary sleeve (332) near the sleeve mouth.

2. The exhaust gas detection and filtering device according to claim 1, characterized in that: The filter bin (1) is located between the air inlet pipe (4) and the filter assembly (3), and a dust box (10) is fixedly connected to the bottom of the outer peripheral side. A notch for cleaning dust is provided at the bottom of the dust box (10), and a cover plate (11) is sealed at the notch.

3. The exhaust gas detection and filtering device according to claim 2, characterized in that: The dust collecting box (10) is provided with an inclined surface (12) at the top of the inner side wall close to the sleeve (32), and the bottom of the sleeve (32) is provided with an ash discharge groove (13) connected to the chute (7) at the inclined surface (12).

4. The exhaust gas detection and filtering device according to claim 3, characterized in that: Circular grooves (14) are provided at the left and right edges of the outer wall of the filter element (31), and a sealing ring (15) is provided in the circular groove (14) to contact the inner wall of the sliding groove (7).

5. The exhaust gas detection and filtering device according to claim 1, characterized in that: The bottom of the inner wall of the main sleeve (331) is fixedly connected to a limiting block (17), the top surface of the limiting block (17) and the bottom surface of the inner wall of the limiting ring (9) are at the same horizontal height, and a side of the auxiliary sleeve (332) close to the limiting block (17) is provided with an avoidance groove (18).

6. The exhaust gas detection and filtering device according to claim 5, characterized in that: When the piston (333) is blocked by the limiting block (17), the end of the push rod (334) is separated from the limiting ring (9).

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