An exhaust emission treatment device

Abstract

The present application relates to waste gas treatment technical field, specifically disclose a kind of waste gas emission treatment equipment, including shell, the shell bottom end is fixedly installed with hopper, the hopper bottom end is equipped with ash outlet, the hopper side wall is equipped with air inlet, the shell top end side wall is equipped with multiple exhaust port, the shell is fixedly installed with baffle, the baffle below is equipped with multiple filter assemblies, the filter assembly includes opening in baffle on through-hole.The filter part in filter assembly is switched when the current filter part is blocked by dust by switching assembly, so that filter part is blocked in a short time filter large amount of waste gas containing high concentration particulate matter, next group of filter part can be switched in time, so that filter part and air inlet and exhaust port form filter passage, always keep unobstructed, ensure that the device waste gas filtration speed is maintained simultaneously by maintaining the gas flow in shell in reasonable range, so that high pressure in shell is within the bearing range of sealing element.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste gas treatment, in particular to a waste gas emission treatment equipment. BACKGROUND

[0002] The waste gas emission treatment equipment refers to the equipment for purifying and treating the waste gas generated in the process of industrial production, living activities and the like, so as to make it reach the emission standard stipulated by the state or the place, thereby reducing the harm to the environment and human health. These equipment removes the pollutants in the waste gas, such as particulate matter, harmful gas, odor and the like, through different technical means. The bag-type dust collector is a kind of high-efficiency dry dust removal equipment, which filters the dust-containing gas by using the filter bag woven by fibers, so as to realize the separation and purification of dust.

[0003] For example, the Chinese patent No. CN117839334A discloses a uniform filtration type bag-type dust collector. Two left-right symmetrical dust removal boxes are provided. The lower end of the dust removal box is provided with a dust hopper. The upper end of the dust removal box is provided with a horizontal partition plate. The horizontal partition plate is provided with filter core assembly cylinders in a rectangular array. The filter core assembly cylinders are fixedly provided with cage type bag filter cores. A driving mechanism for driving all filter core assembly cylinders to rotate is arranged in the dust removal box. The upper end of each dust removal box is provided with a gas outlet channel. The lower part between the two dust removal boxes is provided with an inlet pipe. The upper end of the inlet pipe is connected with a flow divider extending into the lower ends of the two dust removal boxes. The uniform filtration type bag-type dust collector disclosed in the present application not only effectively solves the problem that the bag filter core is more easily damaged due to the concentrated dust flow, improves the service life of the entire dust collector, and realizes that all cage type bag filter cores uniformly and efficiently filter the dust gas, thereby improving the filtering effect of the entire dust collector.

[0004] However, in the process of treating the waste gas by the above-mentioned manner, since the concentration of smoke dust in the waste gas is not fixed, the time for the ash layer to accumulate on the outer wall of the bag is not fixed. When the outer wall of the bag is completely covered by the ash layer after a relatively short period of use and is not replaced in time, the filtering capacity of the bag for the waste gas will be suddenly reduced, a large pressure difference will be generated in the system within a short period of time, the high pressure in the system will form a large mechanical stress on the sealing element between the bag and the system, thereby reducing the sealing performance of the sealing element, and the waste gas may be dispersed without being effectively treated, thereby damaging the environment. SUMMARY

[0005] The present application aims to provide a waste gas emission treatment equipment to solve at least one technical problem in the prior art.

[0006] In order to achieve the above object, the present application provides the following technical scheme: A waste gas emission treatment equipment, comprising a shell, a hopper is fixedly installed at the bottom end of the shell, a dust discharging port is formed at the bottom end of the hopper, an air inlet is arranged on the sidewall of the hopper, a plurality of exhaust ports are formed on the sidewall of the top end of the shell, a partition plate is fixedly installed in the shell, and a plurality of filter assemblies are arranged below the partition plate;

[0007] The filter assembly comprises a through hole formed on the partition plate, and at least two groups of filter parts are arranged below the partition plate in a ring shape, the filter parts are used for filtering the gas entering the shell, and one of the filter parts is always in communication with the through hole;

[0008] The filter assembly further comprises a switching assembly corresponding to the filter assembly, the switching assembly is used for switching the two groups of filter parts when the air pressure in the shell exceeds a preset range, and the switched filter part is in communication with the through hole.

[0009] Preferably, the filter part comprises a fixed ring arranged below the partition plate and capable of being in communication with the through hole, a base is fixedly installed on the inner top surface of the fixed ring through a cage, and a cloth bag is fixedly connected between the bottom end of the fixed ring and the base.

[0010] Preferably, the filter assembly comprises a fixed plate fixedly installed on the inner sidewall of the shell below the partition plate, a plurality of perforations are formed in the fixed plate, a disc is rotatably installed in the perforation, and a mounting ring for mounting the fixed ring is slidably installed in the circular hole formed on the disc.

[0011] Preferably, the switching assembly comprises a Y-shaped rod fixedly installed on the bottom surface of the disc, a bottom plate is fixedly installed on the inner sidewall of the shell above the hopper, a bottom frame is fixedly installed in the bottom plate, a plurality of dust falling holes are formed on the bottom plate, a rotatable rotating rod is installed on the bottom surface of the bottom frame, and the top end of the rotating rod is fixedly connected with the bottom end of the Y-shaped rod.

[0012] Preferably, a rotating sleeve is fixedly installed on the outer wall of the rotating rod in the bottom frame, two groups of sliding grooves are formed on the sidewall of the rotating sleeve, a sliding ring capable of vertically reciprocating is installed in the rotating sleeve, sliding rods capable of sliding in the sliding grooves are arranged on both sides of the sliding ring, a cam groove composed of two inclined grooves and two vertical grooves is formed on the rotating rod, the depth of each inclined groove and each vertical groove gradually decreases along the same sliding direction, and an elastic protrusion capable of sliding in the cam groove is arranged on the inner wall of the sliding ring.

[0013] Preferably, the outer wall of the rotating sleeve is slidingly installed with a pressure plate between the inner wall of the bottom frame, the bottom surface of the base is slidingly connected with the pressure plate, and the bottom surface of the pressure plate, the inner wall of the bottom frame and the outer wall of the rotating sleeve jointly form a closed space, the bottom surface of the pressure plate is rotatably installed with a rotating block, the inner bottom surface of the bottom frame is fixedly installed with a fixed ring, the top surface of the fixed ring is fixedly installed with a plurality of shaft seats, the shaft seats are rotatably installed with rotating handles, one end of the rotating handle is fixedly connected with the rotating block through an elastic telescopic rod, and the other end of the rotating handle is provided with a tension spring between the sliding rods on the two sides of the sliding ring.

[0014] Preferably, a sealing cavity is formed in the disc, a sealing bag is fixedly installed on the inner top surface of the sealing cavity, the sealing bag is connected in communication with the inner bottom frame through an air pipe embedded in the disc, the Y-shaped rod and the rotating rod, and a compression spring is arranged between the mounting ring and the disc.

[0015] Preferably, a plurality of pulse assemblies are fixedly installed above the partition plate, and the pulse assemblies are used for cleaning the switched filter part.

[0016] Preferably, the closed space formed by the pressure plate and the bottom frame is a high-pressure environment.

[0017] Preferably, the bottom end of the sealing bag is an elastic expansion surface, and the bottom end of the side wall of the sealing cavity is lower than the bottom end of the sealing bag.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] Firstly, the present application switches the filter part in the filter assembly when the current filter part is blocked by dust, so that the filter part can be switched in time when the filter part is blocked by filtering a large amount of exhaust gas containing high-concentration particulate matter in a short time, the filter channel formed by the filter part, the air inlet and the air outlet is always kept unobstructed, the filtering speed of the device is ensured, the gas flow in the shell is maintained within a reasonable range, the high pressure in the shell is within the bearing range of the sealing element, the service life of the sealing element is prolonged, and the stability of the sealing element during use is improved.

[0020] Secondly, the pressure plate is driven downward by the change of the air pressure in the shell until the pressure plate drives the rotating handle and exceeds the limit position of the tension spring, then pulls the sliding ring to move upward and drives the rotating rod to rotate to complete the rotating switching of the filter part, so that the pressure plate can detect the air pressure in the shell in real time through the sensitivity to the change of the air pressure in the shell, avoid damage to the sealing element caused by the air pressure in the shell being too high, make the mounting ring move downward to avoid contact with the partition plate to avoid damage to the mounting ring or the cloth bag caused by friction during rotation, and continue to contact after the rotating switching of the filter part is completed, so that the filter part can be switched in a sealed state.

[0021] Thirdly, the application can drive the air pressure in the sealing bag to change synchronously through the air pressure change in the shell, so that the sealing bag can form real-time pneumatic seal between the mounting ring and the disc, to ensure that the exhaust gas cannot escape due to the sealing bag even in a high-pressure environment, to avoid the aging of the sealing element caused by the long-term overloading of the sealing element on the basis of improving the resistance of the sealing element to high pressure, and to further improve the stability of the device during operation, and to avoid the damage of the sealing performance of the sealing bag caused by the particulate matter entering the sealing cavity by increasing the coverage area of the sealing bag to the disc when the mounting ring slides. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a perspective view of the application;

[0023] Figure 2 is a side view of the application;

[0024] Figure 3 is a perspective view of the filter assembly in the application;

[0025] Figure 4 is a side view of the filter assembly in the application Figure 1 ;

[0026] Figure 5 is an isometric view of the application Figure 4 ;

[0027] Figure 6 is a side view of the filter assembly in the application Figure 2 ;

[0028] Figure 7 is a partial exploded view of the switching assembly in the application;

[0029] Figure 8 is a perspective view of the rotating handle and its related structure in the application.

[0030] In the figure: 1, shell; 2, air inlet; 3, exhaust port; 4, partition; 5, cam groove; 6, pulse assembly; 7, hopper; 8, disc; 9, fixed plate; 10, mounting ring; 11, cloth bag; 12, sealing bag; 13, Y-shaped rod; 14, rotating rod; 15, air pipe; 16, rotating sleeve; 17, sliding ring; 18, base; 19, pressure plate; 20, bottom frame; 21, fixed ring; 22, bottom plate; 23, shaft seat; 24, rotating handle; 25, elastic telescopic rod; 26, tension spring; 27, rotating block; 28, compression spring; 29, fixed ring. DETAILED DESCRIPTION

[0031] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present application.

[0032] Please refer to Figures 1 to 8 The present application provides a technical solution: including the shell 1, the bottom end of the shell 1 is fixedly installed with the ash bucket 7, the bottom end of the ash bucket 7 is provided with the ash discharge port, the sidewall of the ash bucket 7 is provided with the air inlet 2, the top end of the shell 1 is provided with a plurality of air outlets 3, the shell 1 is fixedly installed with the partition plate 4, and a plurality of groups of filtering assemblies are arranged below the partition plate 4.

[0033] The filtering assembly comprises a through hole formed on the partition plate 4, and at least two groups of filtering parts arranged below the partition plate 4 in a ring shape, the filtering parts are used for filtering the gas entering the shell 1, and one of the filtering parts is always in communication with the through hole;

[0034] The switching assembly corresponding to the filtering assembly is further arranged, the switching assembly is used for switching the two groups of filtering parts when the air pressure in the shell 1 exceeds the preset range, and the switched filtering part is in communication with the through hole.

[0035] In use, the waste gas is first introduced into the air inlet 2 through the external air blowing equipment, at this time, one of the filtering parts in the filtering assembly is in communication with the through hole on the partition plate 4, so that the air inlet 2, the filtering part and the air outlet 3 form a filtering channel, the waste gas entering the shell 1 is filtered by the filtering part, the dust or other particulate matters in the waste gas are gathered on the periphery of the filtering part and fall into the ash bucket 7 under the action of gravity and are unidirectionally discharged through the ash discharge port, the ash discharge port below the ash bucket 7 is generally in a closed state, the falling ash is concentrated at the bottom of the ash bucket 7, and the ash discharge port can be opened when ash discharge is needed.

[0036] In the process of filtering the waste gas, the number of particulate matters in the waste gas is not fixed, if the filtering parts in the filtering assembly are switched to be in communication with the through hole on the partition plate 4 in turn by using the intermittent switching mode, when a certain filtering part is covered and blocked by a large number of particulate matters in a short time, the air pressure in the shell 1 will rapidly increase under the action of the air blower, which will affect the sealing element between the filtering part and the shell 1, if the sealing element is subjected to excessive mechanical stress and deformed beyond the elastic range of the sealing element, the waste gas will be directly discharged through the air outlet 3 without being filtered by the filtering part, at this time, the switching assembly switches the filtering parts in the filtering assembly, so that the switched filtering part is in communication with the through hole, the filtering channel is unobstructed, and the high-pressure environment in the shell 1 is decompressed, so that the sealing element is prevented from being damaged to cause the waste gas leakage.

[0037] Thus, by switching the filter part in the filter assembly when the current filter part is blocked by dust, the filter part can be switched in time when the filter part is blocked by filtering a large amount of exhaust gas containing high-concentration particulate matter in a short time, so that the filter part and the filter passage formed by the air inlet 2 and the exhaust outlet 3 are always kept unobstructed, ensuring the filtering speed of the device while maintaining the gas flow in the housing 1 within a reasonable range, ensuring that the high pressure in the housing 1 is within the bearing range of the sealing element, prolonging the service life of the sealing element and improving its stability during use.

[0038] Further, the filter part comprises a fixed ring 29 arranged below the partition plate 4 and capable of communicating with the through hole, and the inner top surface of the fixed ring 29 is fixedly installed with the base 18 through a cage, and the bottom end of the fixed ring 29 is fixedly connected with the base 18, and the bag 11 for filtering exhaust gas is connected between the bottom end of the fixed ring 29 and the base 18.

[0039] According to the above embodiment, a specific embodiment of the filter part is provided, and specifically referring to Figure 4 , by connecting the bag 11 for filtering exhaust gas between the bottom end of the fixed ring 29 and the base 18, the fixed ring 29, the bag 11, the base 18 and the partition plate 4 together form an open filter, and when the exhaust gas entering the housing 1 passes through the bag 11 under the action of the external blowing equipment, the particulate matter contained in the exhaust gas is blocked by the bag 11 and gathered on the outer wall of the bag 11 and falls into the ash bucket 7 under the action of its own gravity, and the exhaust gas from which the particulate matter is removed is discharged from the housing 1 along the fixed ring 29 and the exhaust outlet 3, so that the exhaust gas is discharged into the atmosphere after meeting the national emission standards, and the filtering of the exhaust gas is completed.

[0040] Further, the filter assembly comprises a fixed plate 9 fixedly installed on the inner side wall of the housing 1 below the partition plate 4, a plurality of through holes are formed in the fixed plate 9, and a disc 8 is rotatably installed in the through hole.

[0041] According to the above embodiment, a specific embodiment of the filter assembly is provided, and specifically referring to Figure 4 , a plurality of annularly distributed mounting rings 10 are slidably installed in the circular hole formed in the disc 8, and one of the fixed rings 29 in the mounting ring 10 is kept in communication with the partition plate 4, that is, the fixed ring 29 and the bag 11 below it can be replaced by rotating the disc 8, and the installation of the filter part is completed.

[0042] Further, the switching assembly comprises a Y-shaped rod 13 fixedly installed on the bottom surface of the disc 8, a bottom plate 22 is fixedly installed on the inner side wall of the housing 1 above the ash bucket 7, a plurality of bottom frames 20 are fixedly installed in the bottom plate 22, a plurality of ash falling holes are formed in the bottom plate 22, a rotatable rotating rod 14 is installed on the inner bottom surface of the bottom frame 20, and the top end of the rotating rod 14 is fixedly connected with the bottom end of the Y-shaped rod 13.

[0043] According to the above embodiment, a specific embodiment of the switching assembly is provided, with reference to Figure 5 From the above, in the filtering process, when the air pressure in the shell 1 exceeds the preset range, the rotating rod 14 is driven to rotate by the external driving structure, and the rotating rod 14 drives the disc 8 to rotate through the Y-shaped rod 13, that is, the fixed ring 29 distributed on the disc 8 is rotated in turn to switch the through hole on the partition plate 4 in turn, so that one of the filtering parts in the filtering assembly always maintains flow communication with the through hole, maintains the airflow flow in the shell 1, and achieves the effect of stabilizing the air pressure in the shell 1.

[0044] Further, the bottom frame 20 is fixedly installed with a rotating sleeve 16 sleeved on the outer wall of the rotating rod 14, two groups of sliding grooves are formed in the side wall of the rotating sleeve 16, a sliding ring 17 vertically reciprocatingly installed in the rotating sleeve 16, sliding rods are arranged on both sides of the sliding ring 17 and can slide in the sliding grooves, a cam groove 5 composed of two inclined grooves and two vertical grooves is formed in the rotating rod 14, and the depth of each inclined groove and each vertical groove gradually decreases along the same sliding direction, and an elastic protrusion is arranged on the inner wall of the sliding ring 17 and can slide in the cam groove 5.

[0045] According to the above embodiment, with reference to Figure 5 , when the sliding ring 17 slides in the rotating sleeve 16 driven by the external driving structure, the elastic protrusion in the sliding ring 17 slides in the cam groove 5 on the outer wall of the rotating rod 14, with reference to Figure 7 , when the elastic protrusion slides in the inclined groove of the cam groove 5, the rotating rod 14 is driven to rotate, and when the elastic protrusion enters the vertical groove, the sliding ring 17 slides in the opposite direction to complete resetting, that is, the reciprocating sliding of the sliding ring 17 can drive the rotating rod 14 to rotate in one direction intermittently, so that the disc 8 rotates in one direction intermittently to drive the plurality of filtering parts to be connected with the through hole on the partition plate 4 in turn, and the switching of the filtering parts is completed.

[0046] It is worth noting that through the cooperation between the elastic protrusion and the cam groove 5, the elastic protrusion can only slide in one direction, that is, in the vertical groove and the inclined groove in turn.

[0047] Further, the outer wall of the rotating sleeve 16 and the inner wall of the bottom frame 20 are slidingly installed with a pressure plate 19, the bottom surface of the base 18 and the pressure plate 19 are slidingly connected, and the bottom surface of the pressure plate 19, the inner wall of the bottom frame 20 and the outer wall of the rotating sleeve 16 jointly form a closed space, the bottom surface of the pressure plate 19 is rotatably installed with a rotating block 27, the inner bottom surface of the bottom frame 20 is fixedly installed with a fixed ring 21, the top surface of the fixed ring 21 is fixedly installed with a plurality of groups of shaft seats 23, the shaft seats 23 are rotatably installed with rotating handles 24, one end of the rotating handle 24 is fixedly connected with the rotating block 27 through an elastic expansion rod 25, and the other end of the rotating handle 24 is provided with a tension spring 26 between the sliding rods on both sides of the sliding ring 17.

[0048] According to the above-mentioned embodiment, when the cloth bag 11 in the filtering state is blocked by the particulate matter in the exhaust gas, the air pressure in the shell 1 is increased under the action of the air blowing device, at this time, the pressure plate 19 gradually slides down under the action of the air pressure, the installation ring 10 is driven to slide in the circular hole in the disc 8 through the base 18, the top surface of the installation ring 10 is separated from the contact with the partition plate 4, since the installation ring 10 and the disc 8 are still in a sealed state, the fixed plate 9 and the filtering part still play a sealing role on the exhaust gas below, when the pressure plate 19 slides down, the rotating block 27 is also driven to move downward, and the rotating handle 24 is driven to rotate around the shaft seat 23 through the elastic expansion rod 25, so that the end of the rotating handle 24 moves upward, under the action of the tension spring 26, when the rotating handle 24 rotates, the sliding ring 17 still maintains the downward sliding trend, when the air pressure in the shell 1 exceeds the preset range, that is, the pressure plate 19 slides to the preset height under the action of the air pressure, at this time, the end of the rotating handle 24 moves upward, so that the tension spring 26 and the sliding ring 17 are in the same horizontal straight line, when the rotating handle 24 continues to move upward, the tension spring 26 drives the sliding ring 17 to move upward together when it passes through the horizontal state, at this time, the sliding ring 17 drives the rotating rod 14 to rotate through the elastic protrusions on the inner side wall, the rotating rod 14 rotates to complete the switching of the filtering part, when the filtering part completes the rotating switching, the air pressure in the shell 1 gradually decreases, at this time, the sliding ring 17 is driven to move downward and reset under the action of the air pressure between the rotating sleeve 16 and the sliding ring 17, since the elastic protrusions on the inner wall of the sliding ring 17 are lowered in the vertical groove of the cam groove 5 at this time, the rotating rod 14 stops at this time, and the sliding ring 17 is reset together with the rotating handle 24 and the rotating block 27 through the tension spring 26, so that the pressure plate 19 and the filtering part above it are reset together, so that the installation ring 10 on the switched filtering part is in contact with the through hole on the partition plate 4 again, and the switching of the filtering part is completed.

[0049] Thus, the pressure plate 19 is driven to slide downward by the change of air pressure in the shell 1 until the rotating handle 24 is pulled to move upward after the tension spring 26 is pulled to drive the rotating rod 14 to rotate to complete the rotation switching of the filtering part, so that the pressure plate 19 can monitor the air pressure in the shell 1 in real time by the sensitivity to the change of air pressure in the shell 1, avoid damage to the sealing element caused by the high air pressure in the shell 1, and make the mounting ring 10 move downward to avoid friction during rotation to avoid damage to the mounting ring 10 or the cloth bag 11, and continue to contact after the filtering part completes the rotation switching to complete the switching in the sealed state.

[0050] Further, the sealing cavity is provided in the disc 8, the sealing bag 12 is fixedly installed on the top surface of the sealing cavity, the sealing bag 12 is communicated with the bottom frame 20 through the air pipe 15 embedded in the disc 8, the Y-shaped rod 13 and the rotating rod 14, and the compression spring 28 is arranged between the mounting ring 10 and the disc 8.

[0051] According to the above-mentioned sealing element, when the pressure plate 19 slides downward under the action of air pressure, the gas in the bottom frame 20 is pressed into the sealing bag 12 along the air pipe 15, so that the air pressure in the sealing bag 12 is increased, and the sealing bag 12 is completely expanded to tightly contact the gap between the mounting ring 10 and the disc 8, so that the leakage of the sealing bag 12 caused by the high air pressure in the shell 1 is avoided, and the sealing bag 12 is rubbed when the mounting ring 10 slides downward, so that the sealing bag 12 is turned over to a certain extent, that is, the bottom end of the sealing bag 12 is pressed to the side wall of the disc 8, so that the particles are further prevented from entering between the sealing bag 12 and the disc 8, and the switching of the filtering part is completed after the pressure plate 19 moves upward to suck out the excess gas in the sealing bag 12 to complete the resetting. Figure 6 Thus, the air pressure in the sealing bag 12 changes synchronously by the change of air pressure in the shell 1, so that the sealing bag 12 can form real-time pneumatic sealing between the mounting ring 10 and the disc 8, so as to ensure that the exhaust gas cannot escape through the sealing bag 12 in the high-pressure environment, avoid the aging of the sealing element caused by the long-term overload of the sealing element, and further improve the stability of the device during operation, and the coverage area of the sealing bag 12 on the disc 8 is increased when the mounting ring 10 slides, so as to avoid the damage of the sealing performance of the sealing bag 12 caused by the particles entering the sealing cavity.

[0052] Further, the plurality of pulse assemblies 6 are fixedly installed above the partition plate 4, and the pulse assemblies 6 are used for cleaning the filtering part after switching.

[0053]

[0054] ​According to the above-mentioned embodiment, when the switching assembly completes the switching of the filter part, the switched filter part can be cleaned by the pulse assembly 6 on the partition plate 4 (the pulse assembly can be a high-pressure air jet device fixedly installed on the top surface of the shell 1). Since the filter part is preferably two groups in the present solution, one filter part can be kept for filtering while the other filter part can be cleaned, thereby minimizing the time required for cleaning the clogged filter part, reducing the contact time of particulate matter with the cloth bag 11, avoiding the difficulty in cleaning caused by the long contact time of the cloth bag 11 with the particulate matter, and further improving the stability of the airflow in the device.

[0055] Further, the sealing space formed by the pressure plate 19 and the bottom frame 20 is set as a high-pressure environment.

[0056] According to the above-mentioned embodiment, by setting the sealing space formed by the pressure plate 19 and the bottom frame 20 as a high-pressure environment, it can be ensured that the remaining gas in the sealing capsule 12 after the reset of the pressure plate 19 is still sufficient to maintain the sealing between the disc 8 and the mounting ring 10.

[0057] Further, the bottom end of the sealing capsule 12 is provided with an elastic expansion surface, and the bottom end of the sealing cavity side wall is lower than the bottom end of the sealing capsule 12.

[0058] According to the above-mentioned embodiment, when the sealing capsule 12 is locally turned over due to friction with the mounting ring 10, the elastic expansion surface at the bottom end of the sealing capsule 12 can cover the sealing cavity side wall while expanding, further avoiding the entry of particulate matter into the sealing cavity to affect the sealing performance of the sealing capsule 12.

[0059] The standard parts used in the present embodiment can be directly purchased from the market, and the non-standard structural parts according to the description and drawings can also be directly processed according to the existing technical knowledge without any doubt, and the connection mode of each part adopts the mature conventional means in the existing technology, and the machinery, parts and equipment all adopt the conventional models in the existing technology, so specific description is not made here.

[0060] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An exhaust emission treatment device comprising a housing (1), characterized in that: The ash bucket (7) is provided with an air inlet (2) on the side wall, and the top end of the shell (1) is provided with a plurality of air outlets (3), and a partition plate (4) is fixedly installed in the shell (1), and a plurality of filtering assemblies are arranged below the partition plate (4); The filtering assembly comprises a through hole formed in the partition plate (4), and at least two filtering parts in annular distribution are installed below the partition plate (4), the filtering part is used for filtering the gas entering the shell (1), and one of the filtering parts is always in communication with the through hole; The switching assembly corresponding to the filtering assembly is further arranged, and the switching assembly is used for switching the two filtering parts when the air pressure in the shell (1) exceeds the preset range, and the switched filtering part is in communication with the through hole; The filtering part comprises a first fixed ring (29) arranged below the partition plate (4) and capable of being in communication with the through hole, a base (18) is fixedly installed on the inner top surface of the first fixed ring (29) through a cage, and a cloth bag (11) is fixedly connected between the bottom end of the first fixed ring (29) and the base (18); The filtering assembly comprises a fixed plate (9) fixedly installed on the inner side wall of the shell (1) below the partition plate (4), a plurality of perforations are formed in the fixed plate (9), a disc (8) is rotatably installed in the perforation, and a mounting ring (10) for mounting the first fixed ring (29) is slidably installed in the circular hole formed in the disc (8); The switching assembly comprises a Y-shaped rod (13) fixedly installed on the bottom surface of the disc (8), a bottom plate (22) is fixedly installed on the inner side wall of the shell (1) above the ash bucket (7), a bottom frame (20) is fixedly installed in the bottom plate (22), a plurality of ash falling holes are formed in the bottom plate (22), a rotatable rotating rod (14) is installed on the inner bottom surface of the bottom frame (20), and the top end of the rotating rod (14) is fixedly connected with the bottom end of the Y-shaped rod (13); A rotating sleeve (16) is fixedly installed on the outer wall of the rotating rod (14), two sliding grooves are formed in the side wall of the rotating sleeve (16), a sliding ring (17) capable of vertically reciprocating is installed in the rotating sleeve (16), sliding rods capable of sliding in the sliding grooves are arranged on both sides of the sliding ring (17), a cam groove (5) composed of two inclined grooves and two vertical grooves is formed in the rotating rod (14), the depth of each inclined groove and each vertical groove gradually decreases along the same sliding direction, and an elastic protrusion capable of sliding in the cam groove (5) is arranged on the inner wall of the sliding ring (17); The outer wall of the rotating sleeve (16) and the inner wall of the bottom frame (20) are slidably connected with a pressure plate (19), the bottom surface of the base (18) and the pressure plate (19) are slidably connected, and the bottom surface of the pressure plate (19), the inner wall of the bottom frame (20) and the outer wall of the rotating sleeve (16) jointly form a closed space, the bottom surface of the pressure plate (19) is rotatably connected with a rotating block (27), the inner bottom surface of the bottom frame (20) is fixedly connected with a second fixed ring (21), the top surface of the second fixed ring (21) is fixedly connected with a plurality of groups of shaft seats (23), the shaft seats (23) are rotatably connected with rotating handles (24), one end of the rotating handle (24) is fixedly connected with the rotating block (27) through an elastic telescopic rod (25), and the other end of the rotating handle (24) is provided with a tension spring (26) between the slide rods on both sides of the sliding ring (17). The inner wall of the disc (8) is provided with a sealing cavity, the top surface of the sealing cavity is fixedly connected with a sealing bag (12), the sealing bag (12) is connected with the inner wall of the bottom frame (20) through the air pipe (15) embedded in the disc (8), the Y-shaped rod (13) and the rotating rod (14), and the mounting ring (10) and the disc (8) are provided with a compression spring (28).

2. The exhaust emission treatment apparatus of claim 1, wherein: A plurality of pulse assemblies (6) are fixedly connected above the partition plate (4), and the pulse assemblies (6) are used for cleaning the switched filter part.

3. The exhaust emission treatment device of claim 2, wherein: The sealing space formed by the pressure plate (19) and the bottom frame (20) is a high-pressure environment.

4. The exhaust emission treatment apparatus of claim 3, wherein: The bottom end of the sealing bag (12) is an elastic expansion surface, and the bottom end of the side wall of the sealing cavity is lower than the bottom end of the sealing bag (12).

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