Gas inlet pipeline of waste gas treatment equipment and waste gas treatment equipment

Abstract

The utility model relates to the technical field of waste gas treatment, and provides a gas inlet pipeline of waste gas treatment equipment and the waste gas treatment equipment, the gas inlet pipeline comprises a gas inlet pipe, a scraper and a driving component, the first end of the gas inlet pipe is provided with an opening, and the second end of the gas inlet pipe is provided with a gas outlet; the scraper is arranged in the air inlet pipe; the driving assembly is connected to the first end of the air inlet pipe through the sealing assembly and connected with the scraper. A first gas flow channel is defined by the first side of the sealing assembly and the driving assembly, a second gas flow channel is formed in the second side of the sealing assembly, and the first gas flow channel, the second gas flow channel and the interior of the gas inlet pipe communicate in sequence; the seal assembly has a purge gas inlet in communication with the first gas flow channel. The driving assembly drives the scraper to move in the air inlet pipe, so that the scraper scrapes off dust on the inner wall of the air inlet pipe, and the air inlet pipe is prevented from being blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to an air intake pipeline of waste gas treatment equipment and the waste gas treatment equipment. Background Art

[0002] The growing prosperity of the semiconductor industry and the surge in production capacity have generated various waste gases (NF3, PH3, B2H6, SiH4, etc.) during the production process. Many of these gases pose serious health and environmental risks. Most of these gases are heavier than air. If released into the atmosphere, they can spread and settle on the ground, reaching very high concentrations, causing serious environmental pollution and harming human health. If they encounter ignition, they can cause fires or even explosions. Consequently, the market demand for waste gas treatment equipment is extremely high. However, due to the diverse facilities and environments within semiconductor manufacturers, there is also a significant demand for various practical and specialized waste gas treatment devices.

[0003] Currently, waste gas treatment equipment includes an air inlet pipe and a negative pressure pipe. When the waste gas enters the treatment chamber during use, dust may block the air inlet, causing the equipment to stop operating.

[0004] Therefore, how to solve the problem of dust blockage in the air inlet of the air intake cavity of the waste gas treatment equipment is an urgent problem to be solved in the industry. Utility Model Content

[0005] The utility model provides an air intake pipeline of waste gas treatment equipment and the waste gas treatment equipment, which are used to solve the problem of dust blockage of the air intake port of the air intake cavity of the waste gas treatment equipment in the prior art.

[0006] The utility model provides an air intake pipeline of an exhaust gas treatment device, comprising:

[0007] an air inlet pipe, wherein a first end of the air inlet pipe is provided with an opening, and a second end of the air inlet pipe is provided with an air outlet;

[0008] a scraper, disposed inside the air intake pipe;

[0009] A drive assembly, wherein the drive assembly is connected to the first end of the air inlet pipe through a sealing assembly, and the drive assembly is connected to the scraper; the first side of the sealing assembly and the drive assembly form a first gas flow channel, and the second side of the sealing assembly constructs a second gas flow channel, the first gas flow channel, the second gas flow channel and the interior of the air inlet pipe are connected in sequence; the sealing assembly has a purge gas inlet connected to the first gas flow channel.

[0010] According to an air intake pipe of an exhaust gas treatment device provided by the present invention, the sealing assembly includes:

[0011] A drive flange, the drive flange being sleeved on the drive assembly, a first gap being defined between an inner wall of the drive flange and an outer wall of the drive assembly, an end plate being defined at one end of the drive flange away from the drive assembly, a second gap being defined between the end plate and an end face of the drive assembly, an output shaft of the drive assembly being passed through the end plate, and a third gap being defined between the end plate and the output shaft; the purge gas inlet being provided on the drive flange;

[0012] A connecting flange, wherein a first end of the connecting flange is connected to an end of the driving flange away from the driving assembly, and a second end of the connecting flange is connected to the first end of the intake pipe.

[0013] According to an air intake pipeline of an exhaust gas treatment device provided by the present invention, the driving assembly is formed with a positioning step, and one end of the driving flange away from the connecting flange abuts against the positioning step.

[0014] According to an air intake pipe of an exhaust gas treatment device provided by the utility model, the sealing assembly also includes a sealing flange, one end of the sealing flange is connected to the end of the driving flange away from the connecting flange, and the other end of the sealing flange is connected to the positioning step of the driving assembly.

[0015] According to the air intake pipeline of an exhaust gas treatment device provided by the utility model, the positioning step is provided with a sealing ring, and the sealing ring is sealed with the driving component and the sealing flange.

[0016] According to the utility model, an air intake pipeline of an exhaust gas treatment device further includes:

[0017] A scraper fixing plate is connected to the scraper, and a side of the scraper fixing plate facing away from the scraper is connected to the output shaft; a fourth gap is formed between the scraper fixing plate and the end plate.

[0018] According to an air intake pipe of an exhaust gas treatment device provided by the utility model, the scraper fixing plate is stepped, the small end of the scraper fixing plate is connected to the output shaft, and the scraper is connected to the large end of the scraper fixing plate.

[0019] According to the air intake pipeline of the exhaust gas treatment equipment provided by the utility model, a high-temperature resistant medium is provided between the scraper fixing plate and the output shaft.

[0020] According to the air intake pipe of an exhaust gas treatment device provided by the utility model, the scraper is a rod-shaped structure, the scraper extends along the axial direction of the air intake pipe, the cross-section of the scraper is semicircular, and the plane of the scraper faces the inner wall of the air intake pipe.

[0021] The utility model also provides an exhaust gas treatment device, comprising an air intake pipeline of any one of the exhaust gas treatment devices described above.

[0022] The air intake pipe of the exhaust gas treatment equipment provided by the utility model drives the scraper to move in the intake pipe through the driving component, so that the scraper scrapes off the dust on the inner wall of the intake pipe to avoid blockage of the intake pipe; in addition, a first air flow channel is formed between the sealing component and the driving component, and a second air flow channel is formed between the sealing component and the intake pipe. Gas is transported to the first gas flow channel through the purge gas inlet and enters the interior of the intake pipe through the second air flow channel, so that the space between the scraper and the sealing component is in a positive pressure state, preventing the exhaust gas in the intake pipe from entering the space between the scraper and the sealing component, avoiding the exhaust gas from contacting the motor or output shaft of the driving component, which may cause corrosion damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are 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.

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the air intake pipeline of the exhaust gas treatment equipment provided by the utility model.

[0025] Figure 2 It is a side structural schematic diagram of the air intake pipeline of the exhaust gas treatment equipment provided by the utility model.

[0026] Figure 3 yes Figure 2 AA section view.

[0027] Figure 4 yes Figure 2 BB cross-sectional view.

[0028] Figure 5 yes Figure 4 Schematic diagram of the partially enlarged structure at point C in the middle.

[0029] Reference numerals:

[0030] 100, intake pipe;

[0031] 200, scraper;

[0032] 300, sealing assembly; 310, first gas flow channel; 320, second gas flow channel; 330, driving flange; 331, end plate; 340, connecting flange; 350, sealing flange; 360, sealing ring;

[0033] 400, driving assembly; 410, output shaft; 420, positioning step; 430, driving member;

[0034] 500, scraper fixing plate;

[0035] 600. Purge the air intake pipe;

[0036] 700. Air intake connecting pipe. DETAILED DESCRIPTION

[0037] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0038] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0039] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0040] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0042] The following combination Figure 1-Figure 5 The invention describes an air intake pipeline of an exhaust gas treatment device.

[0043] The embodiment of the first aspect of the present utility model provides an intake pipe of an exhaust gas treatment device, such as Figures 1 to 3 As shown, the air inlet pipeline includes an air inlet pipe 100, a scraper 200 and a drive assembly 400. The first end of the air inlet pipe 100 is provided with an opening, and the second end of the air inlet pipe 100 is provided with an air outlet; the scraper 200 is arranged inside the air inlet pipe 100; the drive assembly 400 is connected to the first end of the air inlet pipe 100 through the sealing assembly 300, and the drive assembly 400 is connected to the scraper 200; the first side of the sealing assembly 300 and the drive assembly 400 form a first gas flow channel 310, and the second side of the sealing assembly 300 constructs a second gas flow channel 320, and the first gas flow channel 310, the second gas flow channel 320 and the inside of the air inlet pipe 100 are connected in sequence; the sealing assembly 300 has a purge gas inlet connected to the first gas flow channel 310.

[0044] It can be understood that by arranging the scraper 200 in the air intake pipe 100, the scraper 200 can be driven by the driving assembly 400 to move in the air intake pipe 100, so that the scraper 200 scrapes off the dust on the inner wall of the air intake pipe 100, thereby avoiding the blockage of the air intake pipe 100; in addition, a sealing assembly 300 is arranged between the air intake pipe 100 and the driving assembly 400, and a first air flow channel is formed between the side of the sealing assembly 300 close to the driving assembly 400 and the driving assembly 400, and a second air flow channel is formed between the side of the sealing assembly 300 close to the air intake pipe 100 and the air intake pipe 100, and the first gas flow channel 310 has a purge gas. The air inlet is formed by a purge gas inlet, thereby delivering gas to the first gas flow channel 310 through the purge gas inlet and entering the interior of the intake pipe 100 through the second air flow channel. This maintains a positive pressure in the space between the scraper 200 and the sealing assembly 300, preventing the exhaust gas in the intake pipe 100 from entering the space between the scraper 200 and the sealing assembly 300 and preventing the exhaust gas from contacting the drive component (such as a motor) or the output shaft 410 of the drive assembly 400. Furthermore, the gas enters the gap between the scraper 200 and the inner wall of the intake pipe 100 through the second air flow channel, protecting the scraper 200 from corrosion by the exhaust gas and extending the service life of the scraper 200. It should be noted that the drive component or the output shaft 410 is mostly made of carbon steel or aluminum, which is not corrosion-resistant. Delivering gas to the first gas flow channel 310 through the purge gas inlet ensures that the exhaust gas in the intake pipe 100 does not contact the drive component or the output shaft 410 of the drive assembly 400, thereby preventing the drive assembly 400 from being corroded and damaged by contact with the exhaust gas.

[0045] The air intake pipe of the exhaust gas treatment equipment provided by the embodiment of the present invention drives the scraper 200 to move in the intake pipe 100 through the driving component 400, so that the scraper 200 scrapes off the dust on the inner wall of the intake pipe 100 to avoid blockage of the intake pipe 100; in addition, a first air flow channel is formed between the sealing component 300 and the driving component 400, and a second air flow channel is formed between the sealing component 300 and the intake pipe 100. Gas is delivered to the first gas flow channel 310 through the purge gas inlet and enters the interior of the intake pipe 100 through the second air flow channel, so that the space between the scraper 200 and the sealing component 300 is in a positive pressure state, preventing the exhaust gas in the intake pipe 100 from entering the space between the scraper 200 and the sealing component 300, avoiding the exhaust gas from contacting the driving part or output shaft 410 of the driving component 400, causing corrosion damage, thereby improving the service life.

[0046] In one embodiment of the present invention, Figure 2As shown, the air inlet pipe 100 is a circular tube. An air inlet connecting pipe 700 is provided on the sidewall of the air inlet pipe 100 and is connected to the air inlet pipe 100. The air inlet connecting pipe 700 is perpendicular to the air inlet pipe 100. The air inlet pipe 100 and the air inlet connecting pipe 700 cooperate to form a three-way connector. The air inlet pipe 100 and the air inlet connecting pipe 700 are welded together or integrally formed. The air outlet is used to communicate with the reaction chamber. The reaction gas enters the air inlet pipe 100 through the air inlet connecting pipe 700 and then enters the reaction chamber through the air outlet.

[0047] In one embodiment of the present invention, Figure 3 As shown, the driving assembly 400 includes a driving member 430 and an output shaft 410 arranged at the output of the driving member 430. The driving member 430 drives the output shaft 410 to rotate, thereby driving the scraper 200 to rotate in the intake pipe 100, so that the scraper 200 scrapes off the dust on the inner wall of the intake pipe 100.

[0048] Optionally, the driving member 430 may adopt a driving swing table; further, the driving swing table adopts a double-driving swing table, and the driving swing table adopts two specifications of air pipes to prevent the air pipes from being installed incorrectly during the installation process.

[0049] It should be noted that the drive member 430 may also be a motor. Furthermore, the drive assembly 400 also includes a reducer, and the output of the motor is connected to the output shaft 410 via the reducer. Since the scraper 200 encounters significant resistance during dust removal, providing a reducer between the motor and the scraper 200 can increase the torque output by the drive assembly 400 and enhance the scraping effect of the scraper 200. The motor housing is connected to the reducer housing, and of course, the reducer can also be integrated into the motor housing.

[0050] In one embodiment of the present invention, Figures 3 to 5 As shown, the sealing assembly 300 includes a driving flange 330 and a connecting flange 340, one end of the driving flange 330 is sleeved on the driving assembly 400, and a first gap is provided between the inner wall of the driving flange 330 and the outer wall of the driving assembly 400, the other end of the driving flange 330 has an end plate 331, and a second gap is provided between the end plate 331 and the end face of the driving assembly 400, the output shaft 410 of the driving assembly 400 is passed through the end plate 331, and a third gap is provided between the end plate 331 and the output shaft 410; the purge gas inlet is opened on the driving flange 330; the first end of the connecting flange 340 is connected to the end of the driving flange 330 away from the driving assembly 400, and the second end of the connecting flange 340 is connected to the first end of the intake pipe 100.

[0051] Optionally, the drive assembly 400 includes a drive swing table and an output shaft 410 arranged at the output of the drive swing table. The scraper 200 is connected to the output shaft 410. The drive swing table is used to drive the scraper 200, so that the drive assembly 400 is smaller in size, reducing the installation space, and thus can be suitable for installation environments with limited space.

[0052] Specifically, a positioning step 420 is formed at one end of the driving swing table close to the sealing assembly 300, and the driving flange 330 is sleeved on the positioning step 420 of the driving swing table and abuts against the positioning step 420. A first gap is provided between the inner wall of the driving flange 330 and the outer wall of the driving swing table; a second gap is provided between the end plate 331 and the end face of the driving swing table, a mounting through hole is provided in the middle of the end plate 331, the output shaft 410 is passed through the end plate 331, and a third gap is provided between the end plate 331 and the output shaft 410; in this way, the first gap and the second gap area form the first gas flow channel 310, and the third gap serves as a connecting flow channel connecting the first gas flow channel 310 and the second gas flow channel 320.

[0053] It is understandable that if Figure 1 As shown, a purge inlet pipe 600 is provided on the drive flange 330. The purge inlet pipe 600 is connected to the purge gas inlet of the drive flange 330. Gas enters the first gas flow channel 310 through the purge gas inlet, is evenly distributed through the first gas flow channel 310, and then enters the second gas flow channel 320. This ensures that the gas entering the intake pipe 100 through the second gas flow channel 320 is evenly distributed. In this embodiment, only one purge inlet pipe 600 is provided. Of course, the number of purge inlet pipes 600 is not limited to this. Multiple purge inlet pipes 600 can also be provided, and the multiple purge inlet pipes 600 are arranged at intervals along the circumference.

[0054] In this embodiment, the driving flange 330 and the connecting flange 340 can form a KF flange. Of course, the specific structure of the driving flange 330 and the connecting flange 340 is not limited thereto and is determined according to actual needs.

[0055] Further, such as Figures 3 to 5 As shown, the sealing assembly 300 further includes a sealing flange 350 , one end of which is connected to an end of the driving flange 330 away from the connecting flange 340 , and the other end of the sealing flange 350 is connected to the positioning step 420 of the driving assembly 400 .

[0056] Specifically, the sealing flange 350 abuts against the positioning step 420 of the drive swing table. The sealing flange 350 and the drive swing table are connected by a plurality of circumferentially arranged connectors, which can be hexagon socket screws. The positioning step 420 is provided with a sealing ring 360. The sealing ring 360 is made of rubber and seals with the drive assembly 400 and the sealing flange 350. Preferably, two sealing rings 360 are provided, namely an outer sealing ring and an inner sealing ring. The outer sealing ring has a larger diameter than the inner sealing ring and is located outside the inner sealing ring to form a secondary seal. If one of the outer sealing ring and the inner sealing ring is damaged, the normal operation of the device will not be affected.

[0057] In one embodiment of the present invention, Figure 3 As shown, the output shaft 410 is passed through the mounting hole of the drive flange 330, and one end of the output shaft 410 is connected to the scraper 200 through the scraper fixing plate 500. The scraper fixing plate 500 is connected to the scraper 200, and the side of the scraper fixing plate 500 facing away from the scraper 200 is connected to the output shaft 410; there is a fourth gap between the scraper fixing plate 500 and the end plate 331.

[0058] It should be noted that the third gap between the end plate 331 and the output shaft 410 is a small gap; the gas is blown into the air intake pipe 600 to ensure that the gap between the sealing assembly 300 and the drive swing table is in a positive pressure state, and the gas passes through the third gap and enters the interior of the air intake pipe 100 via the back of the scraper fixing plate 500. In this way, the exhaust gas in the air intake pipe 100 is prevented from entering the drive assembly 400 side, thereby ensuring that the exhaust gas does not contact the drive swing table and the output shaft 410, ensuring that the drive assembly 400 is not corroded by the exhaust gas, and extending the service life of the drive assembly 400; wherein, the back of the scraper fixing plate 500 is the surface of the scraper fixing plate 500 away from the scraper 200. It should be noted here that the drive swing table and the output shaft 410 are made of carbon steel and aluminum, which are not corrosion-resistant. However, this embodiment can avoid the problem of damage caused by corrosion of the drive swing table and the output shaft 410.

[0059] Furthermore, the scraper fixing plate 500 is stepped, the small end of the scraper fixing plate 500 is connected to the output shaft 410 , and the scraper 200 is connected to the large end of the scraper fixing plate 500 .

[0060] It is understood that there is a fifth gap between the large end of the scraper fixing plate 500 and the inner wall of the intake pipe 100, and a sixth gap between the small end of the scraper fixing plate 500 and the connecting flange 340. The fifth gap can be minimized to fully block dust in the intake pipe 100 from spreading toward the drive assembly 400, effectively preventing dust blockage from causing the drive assembly 400 to jam or damage. The large end of the scraper fixing plate 500 is located inside the intake pipe 100. The scraper fixing plate 500 is welded to the scraper 200. Of course, the scraper fixing plate 500 can also be connected to the scraper 200 by plugging or other detachable connection methods to facilitate replacement of the scraper fixing plate 500 or the scraper 200. The side of the scraper fixing plate 500 facing away from the scraper 200 is connected to the output shaft 410. Specifically, a connecting portion is provided on the side of the scraper fixing plate 500 facing away from the scraper 200, and the connecting portion is provided with a threaded blind hole. One end of the output shaft 410 is inserted into the threaded blind hole and threadedly matched with the threaded blind hole.

[0061] Furthermore, during the operation of the equipment, high temperature is transferred from the scraper 200 to the output shaft 410, and thermal expansion and contraction can easily cause the scraper fixing plate 500 to fall off the output shaft 410; in this embodiment, the side wall of the blind hole is provided with a threaded through hole, and a screw is provided in the threaded through hole, and the screw abuts against one end of the output shaft 410, thereby fixing one end of the output shaft 410 in the threaded blind hole to prevent the scraper fixing plate 500 from falling off the output shaft 410.

[0062] In one embodiment of the present invention, a high temperature resistant medium is provided between the scraper fixing plate 500 and the output shaft 410 .

[0063] It is understandable that due to the high temperature during the operation of the waste gas treatment equipment, which is transferred from the scraper 200 to the output shaft 410, the thermal expansion and contraction can easily cause the connection between the output shaft 410 and the scraper fixing plate 500 to loosen, resulting in the separation of the scraper 200 from the motor. Therefore, in the process of connecting the output shaft 410 and the scraper fixing plate 500, a high-temperature resistant medium is injected between the output shaft 410 and the scraper fixing plate 500. The high-temperature resistant medium can be a high-temperature resistant fixing glue. The high-temperature resistant fixing glue can prevent the output shaft 410 and the scraper fixing plate 500 from loosening on the one hand, and prevent the exhaust gas from corroding the end face of the output shaft 410 or the output end of the reducer on the other hand.

[0064] In one embodiment of the present invention, the scraper 200 is made of corrosion-resistant material and has a rod-shaped structure. The scraper 200 extends axially along the intake pipe 100. The length of the scraper 200 can be reasonably designed according to the length of the intake pipe 100 and the internal cleaning requirements of the intake pipe 100.

[0065] In one embodiment of the present invention, the scraper 200 has a semicircular cross-section, with the flat surface of the scraper 200 facing the inner wall of the air intake duct 100. That is, the flat surface of the scraper 200 faces outward and the circular surface faces inward, so as to reduce the contact area between the scraper 200 and the dust, thereby reducing the accumulation of dust on the scraper 200. The outer edge of the scraper fixing plate 500 is provided with a semicircular notch that matches the cross-section of the scraper 200.

[0066] It can be understood that the plane of the scraper 200 faces outward, and the two edges of the plane along the width direction form a sharp corner, which is closest to the inside of the intake pipe 100. During the process of the drive component 400 driving the scraper fixing plate 500 to rotate, the scraper fixing plate 500 drives the scraper 200 to rotate, and the sharp corner of the scraper 200 can be effectively used to remove the dust inside the intake pipe 100. The circular surface of the scraper 200 is inward to reduce the contact area with the exhaust gas dust passing through the intake pipe 100, thereby reducing the accumulation of dust on the scraper 200.

[0067] It should be noted that when the scraper 200 is installed horizontally, the scraped dust is carried out of the air inlet by the air flow; when the scraper 200 is installed vertically, the scraped dust is carried out of the air inlet by its own weight and the air flow.

[0068] In one embodiment of the present invention, the drive swing table drives the output shaft 410 to rotate back and forth at a certain angle, and the drive swing table drives the output shaft 410 to rotate to drive the scraper 200 to rotate. Compared with the conventional cylinder flat scraper 200, the scraper 200 will not occupy too many exhaust gas channels in the intake pipe 100, and thus will basically not affect the exhaust gas flow.

[0069] Specifically, the drive output shaft 410 of the drive platform rotates back and forth, and two scrapers 200 are symmetrically arranged on the scraper fixing plate 500. It should be noted that the rotation angle of the drive output shaft 410 of the drive platform and the number of scrapers 200 can be reasonably designed according to actual needs, so that the scrapers 200 can scrape the entire inner wall of the intake pipe 100 with one back and forth rotation of the drive output shaft 410.

[0070] It should be noted that if Figure 1 As shown, in the initial state of the device, the two scrapers 200 should be located on both sides of the air intake connecting pipe 700 to prevent the scrapers 200 from blocking the air intake connecting pipe 700 when not in operation. It should be noted that if the scrapers 200 block the air intake connecting pipe 700, dust will accumulate on the scrapers 200, thereby clogging the air intake connecting pipe 700.

[0071] In a preferred embodiment of the present invention, the surface of the scraper 200 is provided with an anti-stick coating to reduce the accumulation of dust on the scraper 200 .

[0072] The utility model also provides an exhaust gas treatment device, which includes the air inlet of the exhaust gas treatment device described in any one of the above embodiments.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An air intake pipe of an exhaust gas treatment device, characterized in that: include: an air inlet pipe, wherein a first end of the air inlet pipe is provided with an opening, and a second end of the air inlet pipe is provided with an air outlet; a scraper, disposed inside the air intake pipe; A drive assembly, wherein the drive assembly is connected to the first end of the air inlet pipe through a sealing assembly, and the drive assembly is connected to the scraper; the first side of the sealing assembly and the drive assembly form a first gas flow channel, and the second side of the sealing assembly constructs a second gas flow channel, the first gas flow channel, the second gas flow channel and the interior of the air inlet pipe are connected in sequence; the sealing assembly has a purge gas inlet connected to the first gas flow channel.

2. The air intake pipe of the exhaust gas treatment equipment according to claim 1, characterized in that: The sealing assembly comprises: A drive flange, the drive flange being sleeved on the drive assembly, a first gap being defined between an inner wall of the drive flange and an outer wall of the drive assembly, an end plate being defined at one end of the drive flange away from the drive assembly, a second gap being defined between the end plate and an end face of the drive assembly, an output shaft of the drive assembly being passed through the end plate, and a third gap being defined between the end plate and the output shaft; the purge gas inlet being provided on the drive flange; A connecting flange, wherein a first end of the connecting flange is connected to an end of the driving flange away from the driving assembly, and a second end of the connecting flange is connected to the first end of the intake pipe.

3. The air intake pipe of the exhaust gas treatment equipment according to claim 2, characterized in that: The driving assembly is formed with a positioning step, and one end of the driving flange away from the connecting flange abuts against the positioning step.

4. The air intake pipe of the exhaust gas treatment equipment according to claim 3, characterized in that: The sealing assembly further comprises a sealing flange, one end of which is connected to an end of the driving flange away from the connecting flange, and the other end of the sealing flange is connected to the positioning step of the driving assembly.

5. The air intake pipe of the exhaust gas treatment equipment according to claim 4, characterized in that: The positioning step is provided with a sealing ring, and the sealing ring is sealed with the driving component and the sealing flange.

6. The air intake pipeline of the exhaust gas treatment equipment according to any one of claims 2 to 4, characterized in that: Also includes: A scraper fixing plate is connected to the scraper, and a side of the scraper fixing plate facing away from the scraper is connected to the output shaft; a fourth gap is formed between the scraper fixing plate and the end plate.

7. The air intake pipeline of the exhaust gas treatment equipment according to claim 6, characterized in that: The scraper fixing plate is in a step shape, the small end of the scraper fixing plate is connected to the output shaft, and the scraper is connected to the large end of the scraper fixing plate.

8. The air intake pipeline of the exhaust gas treatment equipment according to claim 6, characterized in that: A high temperature resistant medium is provided between the scraper fixing plate and the output shaft.

9. The air intake pipe of the exhaust gas treatment equipment according to claim 6, characterized in that: The scraper is in a rod-shaped structure, extends along the axial direction of the air intake pipe, has a semicircular cross section, and a plane of the scraper faces the inner wall of the air intake pipe.

10. A waste gas treatment device, characterized in that: An air intake pipeline comprising the exhaust gas treatment device according to any one of claims 1 to 9.

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