Purification line for the recovery of nitrogen from exhaust gases of ceramic support for automotive exhaust

Abstract

The application discloses a purification production line for recycling nitrogen from a ceramic carrier exhaust gas of automobile exhaust, and belongs to the technical field of nitrogen recycling, and comprises a filter; an exhaust gas source and a compressor are fixedly connected with the input end and the output end of the filter respectively; the output end of the compressor is fixedly connected with an ice machine, the output end of the ice machine is fixedly connected with a gas-liquid separator, and the gas outlet end of the gas-liquid separator is fixedly connected with a purification unit. The application realizes the recycling of user exhaust gas, simplifies the exhaust gas treatment process for the user, reduces exhaust gas emission, enables the recycled exhaust gas to be purified, greatly reduces the equipment investment cost of the user, saves the consumption of nitrogen, reduces the equipment occupation area and the like, and greatly reduces the production cost of the user.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nitrogen recovery, in particular to a purification production line for recovering nitrogen from ceramic carrier exhaust gas of automobile exhaust. BACKGROUND

[0002] Currently, nitrogen is used as a protective gas in the production of ceramic carriers of automobile exhaust, and ethanol, amine, ether and other chemical solutions are added in the process. After the nitrogen is contaminated in the production process, it is discharged into the exhaust treatment system of the user, thus a large amount of exhaust gas is discharged, and the exhaust gas contains ethanol, amine, ether and other chemical solutions, which does not meet the national direct discharge requirements, and the ethanol, amine, ether and other chemical solutions in the exhaust gas need to be purified; the cost of exhaust treatment equipment is increased, and a large amount of nitrogen is discharged after use, which also causes a large amount of waste, resulting in an increase in production cost of the user;

[0003] As a protective gas for production, nitrogen is discharged as exhaust gas after being contaminated in the production process, which causes a large amount of resource waste and results in high production cost;

[0004] The waste pollution treatment equipment is composed of multiple levels of adsorption purification equipment, and is also provided with a fan, a incinerator and other equipment, which is complex, occupies a large area and has high investment and energy consumption.

[0005] Based on this, the present application designs a purification production line for recovering nitrogen from ceramic carrier exhaust gas of automobile exhaust to solve the above problems. SUMMARY

[0006] In view of the above-mentioned shortcomings of the prior art, the present application provides a purification production line for recovering nitrogen from ceramic carrier exhaust gas of automobile exhaust.

[0007] To achieve the above purpose, the present application is realized by the following technical scheme:

[0008] The purification production line for recovering nitrogen from ceramic carrier exhaust gas of automobile exhaust comprises a filter;

[0009] The input end and the output end of the filter are fixedly connected with an exhaust gas source and a compressor respectively;

[0010] The output end of the compressor is fixedly connected with an ice machine, the output end of the ice machine is fixedly connected with a gas-liquid separator, and the gas outlet end of the gas-liquid separator is fixedly connected with a purification unit.

[0011] Further, the filter comprises a box body, a pulse generator, an air outlet pipe, a cloth bag and a cloth bag mounting plate, the cloth bag mounting plate is fixedly installed on the inner wall of the box body, a plurality of groups of cloth bags are fixedly installed on the bottom of the cloth bag mounting plate in a rectangular array, the air outlet pipe is fixedly installed on the side wall of the box body in communication, and the air outlet pipe is higher than the cloth bag mounting plate;

[0012] The box side wall is fixedly connected with a rotating air inlet pipe for uniform air distribution, and the rotating air inlet pipe is lower than the cloth bag;

[0013] The air outlet pipe is fixedly connected with the input end of the compressor, and the outer end of the rotating air inlet pipe is fixedly connected with the waste gas source;

[0014] The pulse generator is fixedly installed on the box side wall, and the output end of the pulse generator is fixedly connected with a back blowing assembly for single-row cloth bag unblocking, and the air outlet end of the back blowing assembly is located at the inner top of the cloth bag.

[0015] Further, the rotating air inlet pipe comprises an air inlet pipe, a rotating pipe, an air outlet hole, a support plate, a fan blade, a second rotating shaft and a connecting block, the air inlet pipe is fixedly installed on the box side wall, the support plate is fixedly installed on the inner wall of the air inlet pipe, the second rotating shaft is rotatably connected with the support plate through a bearing, a plurality of fan blades are fixedly installed on the outer end of the second rotating shaft at equal intervals along the circumferential direction, the inner end of the second rotating shaft is fixedly connected with the connecting block, the outer end of the connecting block is fixedly connected with the rotating pipe, the rotating pipe is coaxially arranged with the air inlet pipe and has the same inner diameter, and the rotating pipe is provided with the air outlet hole along the circumferential direction.

[0016] Further, the rotating pipe is rotatably connected with the inner wall of the box through a bearing.

[0017] Further, the back blowing assembly comprises a plurality of follow-up air inlet assemblies, a set of synchronous adjusting assemblies, a plurality of follow-up blocking assemblies and a plurality of third straight pipes, the third straight pipes are arranged one-to-one with the cloth bags, the air outlet ends of the third straight pipes are located at the upper ends of the cloth bags, the plurality of third straight pipes are equally divided into a plurality of rows, the top of the third straight pipe in a single row is connected with a follow-up air inlet assembly and a follow-up blocking assembly, the synchronous adjusting assembly is movably connected with the follow-up air inlet assembly and the follow-up blocking assembly, a set of synchronous adjusting assemblies are fixedly installed on the cloth bag mounting plate, and a plurality of follow-up air inlet assemblies are fixedly connected with the output end of the pulse generator.

[0018] Further, the follow-up air inlet assembly comprises a first spring, a cross pipe, a straight cylinder, a first sliding rod, a second sliding rod, a valve core and a ball, the through holes formed on both sides of the middle end of the straight cylinder are fixedly connected with the cross pipe, a set of cross pipes are fixedly connected with the output end of the pulse generator, a third straight pipe is fixedly installed at the bottom of another set of cross pipes at equal intervals, the inner wall of the valve core is slidably connected with the inner wall of the straight cylinder, the lower end of the valve core is provided with an air hole, the upper and lower ends of the valve core are fixedly connected with the second sliding rod and the first sliding rod, the top of the second sliding rod is fixedly connected with the top of the first spring, the bottom of the first spring is fixedly connected with the top of the straight cylinder, the bottom of the first sliding rod is rotatably connected with the ball, the ball is movably connected with the synchronous adjusting assembly, and the air hole and the cross pipe are misaligned when the first spring is in the original state.

[0019] Further, the following further, the servo plugging assembly includes a second spring, a connecting plate, a second V-shaped plate, a hinge seat, an n-shaped plate, a fixed block, a sector plate and a push rod, the second spring is sleeved outside the third straight pipe, the upper and lower ends of the second spring are fixedly connected with another group of horizontal pipes and the connecting plate respectively, the second V-shaped plate is fixedly installed at the end of the connecting plate close to the straight cylinder, and the second V-shaped plate is movably connected with the synchronous adjusting assembly, the hinge seat is fixedly connected with the sector plate at the top of the cloth bag mounting plate, the outer wall of the sector plate is fixedly connected with the n-shaped plate, the inner wall of the n-shaped plate is slidably connected with the outer wall of the push rod, the outer end of the push rod is fixedly connected with the fixed block, and the fixed block is fixedly connected with the connecting plate, when the second spring is in the original state, the sector plate is in the open state, and when the sector plate is located at the lowermost end, all the sector plates are in contact with the third straight pipe and block the top of the cloth bag.

[0020] Further, the connecting plate is slidably connected with the third straight pipe through a sliding hole.

[0021] Further, the synchronous adjusting assembly includes a guide rail assembly, a threaded rod, a first V-shaped block, a second motor, a Z-shaped plate and a third V-shaped plate, the second motor and the guide rail of the guide rail assembly are fixedly connected with the top of the cloth bag mounting plate, the output end of the second motor is fixedly connected with the threaded rod, the Z-shaped plate is threadedly connected with the threaded rod through a threaded sleeve, the bottom of the Z-shaped plate is fixedly connected with the sliding block of the guide rail assembly, one end of the Z-shaped plate is fixedly connected with the first V-shaped block matched with the ball, the other end of the Z-shaped plate is fixedly connected with the third V-shaped plate matched with the second V-shaped plate, the tip of the first V-shaped block faces upward, and the tip of the third V-shaped plate faces downward.

[0022] Beneficial effects: The waste gas passes through the filter and is sucked by the compressor to increase the pressure to the set pressure, the waste gas is discharged into the ice machine after being pressurized by the compressor, the ice machine cools the waste gas to the temperature of the box-pulse generator, so that the organic solvent condensate such as ethanol in the waste gas is liquefied, then the gas enters the gas-liquid separator, the gas-liquid separation is carried out in the gas-liquid separator, the condensed organic solvents such as ethanol are gathered in the gas-liquid separator, and after a certain amount is reached in the gas-liquid separator, the waste gas is discharged for unified waste pollution treatment; the waste gas separated by the gas-liquid separator is sent to the purification unit, the molecular sieve in the purification unit adsorbs and dries the residual organic solvents such as ethanol and water, nitrogen gas (purity ≥ 99.9% N2) can be obtained after adsorption, and is put into the pipe network at the required use pressure, so that the waste gas is recycled for the user, the process of waste gas treatment is simplified, the waste gas emission is reduced, the waste gas is purified and then recycled, the user equipment investment cost is greatly reduced, the nitrogen gas consumption is saved, the equipment occupation area is reduced, and the user production cost is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without any creative effort.

[0024] Figure 1 Flow chart of the purification production line for recovering nitrogen from the exhaust gas of the ceramic carrier of the automobile exhaust gas according to the present application;

[0025] Figure 2 Front view of the filter according to the present application Figure 1 ;

[0026] Figure 3 Front view of the filter according to the present application

[0027] Figure 4 Left view of the filter according to the present application

[0028] Figure 5 Sectional view along the A-A direction of Figure 3 ;

[0029] Figure 6 Sectional view along the B-B direction of Figure 4 ;

[0030] Figure 7 Front view of the cloth bag mounting plate and its connecting structure according to the present application Figure 1 ;

[0031] Figure 8 Front view of the cloth bag mounting plate and its connecting structure according to the present application Figure 2 ;

[0032] Figure 9 Front view of the cloth bag mounting plate and its connecting structure according to the present application

[0033] Figure 10 Sectional view along the C-C direction of Figure 9 ;

[0034] Figure 11 Enlarged view of the structure at D of Figure 7 ;

[0035] Figure 12 Enlarged view of the structure at E of Figure 8 ;

[0036] Figure 13 Enlarged view of the structure at F of Figure 10 .

[0037] The reference signs in the drawings respectively represent:

[0038] 1. Box 2. Pulse generator 3. Anti-overflow ash removal assembly 31. First straight pipe 32. First motor 33. Second straight pipe 34. Cylinder 35. First rotating shaft 36. Connecting plate 4. Rotating air inlet pipe 41. Air inlet pipe 42. Rotating pipe 43. Air outlet hole 44. Support plate 45. Fan blade 46. Second rotating shaft 47. Connecting block 5. Air outlet pipe 6. Cloth bag 7. Cloth bag mounting plate 8. Blowback assembly 81. First spring 82. Cross pipe 83. Straight cylinder 84. Second spring 85. Connecting cross plate 86. Guide rail assembly 87. Threaded rod 88. First V-shaped block 89. Second motor 810. First sliding rod 811. Third straight pipe 812. Second sliding rod 813. Valve core 814. Vent hole 815. Ball 816. Z-shaped plate 817. Second V-shaped plate 818. Third V-shaped plate 819. Hinged seat 820. N-shaped plate 821. Fixed block 822. Fan-shaped plate 823. Pushing rod 9. Compressor 10. Ice machine 11. Gas-liquid separator 12. Purification unit 13. Filter DETAILED DESCRIPTION

[0039] To make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0040] The present application will be further described below with reference to the embodiments.

[0041] Embodiment, please refer to Figures 1-13 , the purification production line for recycling nitrogen in the ceramic carrier exhaust gas of automobile exhaust, including filter 13;

[0042] The input end and the output end of the filter 13 are fixedly connected with the exhaust source and the compressor 9 respectively;

[0043] The output end of the compressor 9 is fixedly connected with the ice machine 10, the output end of the ice machine 10 is fixedly connected with the gas-liquid separator 11, and the gas outlet end of the gas-liquid separator 11 is fixedly connected with the purification unit 12.

[0044] The exhaust gas is compressed by the compressor 9 to a set pressure, and the exhaust gas is discharged into the ice machine 10 after being pressurized by the compressor 9. The ice machine 10 cools the exhaust gas to 1-2℃, so that the organic solvents such as ethanol in the exhaust gas are condensed and liquefied. Then the gas enters the gas-liquid separator 11, where gas-liquid separation is carried out. The condensed organic solvents such as ethanol are collected in the gas-liquid separator 11. When a certain amount of organic solvents is collected in the gas-liquid separator 11, the organic solvents are discharged for unified waste treatment. The exhaust gas separated by the gas-liquid separator 11 is sent to the purification unit 12. The molecular sieve in the purification unit 12 adsorbs and dries the residual organic solvents and water. After adsorption, nitrogen gas (purity ≥ 99.9% N2) is obtained and is supplied to the pipe network at the required use pressure, thereby completing the recycling of the user's exhaust gas, simplifying the user's exhaust gas treatment process, reducing exhaust gas emission, and greatly reducing the user's equipment investment cost, saving nitrogen consumption, reducing equipment occupation, and greatly reducing the user's production cost.

[0045] The filter 13 comprises a box body 1, a pulse generator 2, an air outlet pipe 5, cloth bags 6, and a cloth bag mounting plate 7. The cloth bag mounting plate 7 is fixedly installed on the inner wall of the box body 1. A plurality of groups of cloth bags 6 are fixedly installed in a rectangular array on the bottom of the cloth bag mounting plate 7. The air outlet pipe 5 is fixedly installed in communication with the side wall of the box body 1 and is arranged higher than the cloth bag mounting plate 7.

[0046] The side wall of the box body 1 is fixedly connected with a rotating air inlet pipe 4 for uniform air distribution, and the rotating air inlet pipe 4 is arranged lower than the cloth bags 6.

[0047] The air outlet pipe 5 is fixedly connected with the input end of the compressor 9, and the outer end of the rotating air inlet pipe 4 is fixedly connected with the exhaust gas source.

[0048] The pulse generator 2 is fixedly installed on the side wall of the box body 1. The output end of the pulse generator 2 is fixedly connected with a back flushing assembly 8 for clearing the cloth bags 6 in a single row, and the air outlet end of the back flushing assembly 8 is located at the top of the cloth bags 6.

[0049] The rotating air inlet pipe 4 comprises an air inlet pipe 41, a rotating pipe 42, air outlet holes 43, a support plate 44, fan blades 45, a second rotating shaft 46, and a connecting block 47. The air inlet pipe 41 is fixedly installed on the side wall of the box body 1. The support plate 44 is fixedly installed on the inner wall of the air inlet pipe 41. The second rotating shaft 46 is rotatably connected with the support plate 44 through a bearing. A plurality of groups of fan blades 45 are fixedly installed on the outer end of the second rotating shaft 46 in a circumferential direction at equal intervals. The inner end of the second rotating shaft 46 is fixedly connected with the connecting block 47, and the outer end of the connecting block 47 is fixedly connected with the rotating pipe 42. The rotating pipe 42 is coaxially arranged with the air inlet pipe 41 and has the same inner diameter size. The rotating pipe 42 is provided with the air outlet holes 43 in the circumferential direction.

[0050] The rotating pipe 42 is rotatably connected with the inner wall of the box body 1 through a bearing.

[0051] The exhaust gas source enters the air inlet pipe 41 of the rotating air inlet pipe 4, the flowing exhaust gas drives the fan blade 45 to rotate, the fan blade 45 drives the second rotating shaft 46 to rotate, the second rotating shaft 46 drives the connecting block 47 to rotate, the connecting block 47 drives the rotating pipe 42 to rotate, the rotating pipe 42 drives the air outlet hole 43 to rotate and distribute the gas, which is beneficial to the gas sprayed from the air outlet hole 43 to contact all the cloth bags 6, avoids the dust gas from acting on the cloth bags 6 close to the air inlet pipe 41 at the first time, makes all the cloth bags 6 contact the gas at the first time, makes all the cloth bags 6 have a higher filtering participation rate, realizes uniform filtering of the dust gas, effectively solves the problem that the cloth bags 6 close to the air outlet hole 43 are more easily damaged due to the concentrated dust gas flow washing the cloth bags 6 close to the air outlet hole 43, and improves the service life of the cloth bags 6.

[0052] The back flushing assembly 8 includes a plurality of follow-up air inlet assemblies, a set of synchronous adjusting assemblies, a plurality of follow-up sealing assemblies, and a plurality of third straight pipes 811, the third straight pipes 811 are arranged one by one corresponding to the cloth bags 6, and the air outlet ends of the third straight pipes 811 are located in the upper ends of the cloth bags 6, the plurality of third straight pipes 811 are equally divided into a plurality of rows, the top of the third straight pipes 811 in a single row is connected with a set of follow-up air inlet assemblies and a set of follow-up sealing assemblies, the synchronous adjusting assemblies are movably connected with the follow-up air inlet assemblies and the follow-up sealing assemblies, a set of synchronous adjusting assemblies is fixedly installed on the cloth bag mounting plate 7, and the plurality of follow-up air inlet assemblies are fixedly connected with the output end of the pulse generator 2;

[0053] The follow-up air inlet assembly includes a first spring 81, a cross pipe 82, a straight cylinder 83, a first sliding rod 810, a second sliding rod 812, a valve core 813, and a ball 815, the through holes opened on both sides of the middle end of the straight cylinder 83 are fixedly connected with the cross pipe 82, a set of cross pipes 82 is fixedly connected with the output end of the pulse generator 2, the third straight pipes 811 are fixedly installed at the bottom of another set of cross pipes 82 at equal intervals, the inner wall of the valve core 813 is slidably connected with the inner wall of the straight cylinder 83, the air hole 814 is opened at the lower end of the valve core 813, the second sliding rod 812 and the first sliding rod 810 are fixedly connected with the upper and lower ends of the valve core 813, the top of the second sliding rod 812 is fixedly connected with the top of the first spring 81, the bottom of the first spring 81 is fixedly connected with the top of the straight cylinder 83, the bottom of the first sliding rod 810 is rotatably connected with the ball 815, the ball 815 is movably connected with the synchronous adjusting assembly, and the air hole 814 is arranged in a staggered manner with the cross pipe 82 when the first spring 81 is in an original state;

[0054] The follow-up type plugging assembly comprises a second spring 84, a connecting horizontal plate 85, a second V-shaped plate 817, a hinged seat 819, an n-shaped plate 820, a fixed block 821, a sector plate 822 and a pushing rod 823. The second spring 84 is sleeved outside the third straight pipe 811. The upper and lower ends of the second spring 84 are fixedly connected with another group of horizontal pipes 82 and the connecting horizontal plate 85 respectively. The second V-shaped plate 817 is fixedly installed at the end of the connecting horizontal plate 85 close to the straight cylinder 83, and is movably connected with the synchronous adjusting assembly. The hinged seats 819 are fixedly connected with the cloth bag installation plate 7 at the top of the cloth bag 6 along the circumference at equal intervals. The inner end of the hinged seat 819 is fixedly connected with the sector plate 822. The outer wall of the sector plate 822 is fixedly connected with the n-shaped plate 820. The inner wall of the n-shaped plate 820 is slidingly connected with the outer wall of the pushing rod 823. The outer end of the pushing rod 823 is fixedly connected with the fixed block 821. The fixed block 821 is fixedly connected with the connecting horizontal plate 85. When the second spring 84 is in the original state, the sector plate 822 is in the open state. When the sector plate 822 is located at the lowermost end, all the sector plates 822 are in contact with the third straight pipe 811 and block the top of the cloth bag 6.

[0055] The connecting horizontal plate 85 is slidingly connected with the third straight pipe 811 through a sliding hole.

[0056] The synchronous adjusting assembly comprises a guide rail assembly 86, a threaded rod 87, a first V-shaped block 88, a second motor 89, a Z-shaped plate 816 and a third V-shaped plate 818. The second motor 89 and the guide rail of the guide rail assembly 86 are fixedly connected with the top of the cloth bag installation plate 7. The output end of the second motor 89 is fixedly connected with the threaded rod 87. The Z-shaped plate 816 is threadedly connected with the threaded rod 87 through a threaded sleeve. The bottom of the Z-shaped plate 816 is fixedly connected with the sliding block of the guide rail assembly 86. One end of the Z-shaped plate 816 is fixedly connected with the first V-shaped block 88 used in cooperation with the spherical body 815. The other end of the Z-shaped plate 816 is fixedly connected with the third V-shaped plate 818 used in cooperation with the second V-shaped plate 817. The tip of the first V-shaped block 88 faces upward. The tip of the third V-shaped plate 818 faces downward.

[0057] The second motor 89 of the synchronous adjusting assembly of the back flushing assembly 8 drives the threaded rod 87 to rotate, and the threaded rod 87 drives the Z-shaped plate 816 to move under the guidance of the guide rail assembly 86, the Z-shaped plate 816 drives the first V-shaped block 88 and the third V-shaped plate 818 to move, the first V-shaped block 88 is separated from the ball 815, the third V-shaped plate 818 is separated from the second V-shaped plate 817, the first spring 81 drives the second sliding rod 812 to move downward, the second sliding rod 812 drives the valve core 813 to move downward, the solid part of the valve core 813 blocks the horizontal pipe 82, the second spring 84 drives the fixed block 821 to move upward, the fixed block 821 drives the push rod 823 to move upward, the push rod 823 drives the sector plate 822 to rotate upward along the hinge seat 819 through the n-shaped plate 820, the sector plate 822 is in an open state, and the cloth bag 6 normally filters;

[0058] When the cloth bags 6 in a row need to be back flushed, the second motor 89 of the synchronous adjusting assembly of the back flushing assembly 8 drives the threaded rod 87 to rotate, and the threaded rod 87 drives the Z-shaped plate 816 to move under the guidance of the guide rail assembly 86, the Z-shaped plate 816 drives the first V-shaped block 88 and the third V-shaped plate 818 to move, the first V-shaped block 88 contacts the ball 815, the third V-shaped plate 818 contacts the second V-shaped plate 817, the first V-shaped block 88 drives the ball 815 to move upward, the ball 815 drives the first sliding rod 810 to move upward, the first sliding rod 810 drives the valve core 813 to move upward, the valve core 813 drives the air hole 814 to move to coincide with the horizontal pipe 82, the first spring 81 is in a compressed state, the third V-shaped plate 818 drives the second V-shaped plate 817 to move downward, the second V-shaped plate 817 drives the connecting horizontal plate 85 to move downward, the connecting horizontal plate 85 drives the fixed block 821 to move downward, the fixed block 821 drives the push rod 823 to move downward, the push rod 823 drives the sector plate 822 to rotate downward along the hinge seat 819 through the n-shaped plate 820, when the sector plate 822 is at the lowermost end, all the sector plates 822 are in contact with the third straight pipe 811 and block the top of the cloth bag 6 that needs to be back flushed, the pulse gas generated by the pulse generator 2 enters into another group of horizontal pipes 82 through a group of horizontal pipes 82, and then is sprayed out from the third straight pipe 811 at the bottom of the other group of horizontal pipes 82 to back flush the cloth bag 6 that needs to be back flushed, and other groups of cloth bags 6 normally filter, without the need for shutdown treatment, which is beneficial to continuous production, when the sector plate 822 is at the lowermost end, all the sector plates 822 are in contact with the third straight pipe 811 and block the top of the cloth bag 6 that needs to be back flushed, the cloth bag 6 that needs to be back flushed does not filter during back flushing, avoiding the high-pressure air blown out from the third straight pipe 811 from leaking out from the top of the cloth bag 6, which is beneficial to the cloth bag 6 cleaning of the cloth bag 6 by the high-pressure gas, ensures the back flushing cleaning effect, and can achieve the energy saving effect.

[0059] The bottom of the box body 1 is fixedly connected with an anti-overflow ash discharging assembly 3 for discharging ash;

[0060] The anti-overflow ash discharging assembly 3 comprises a first straight pipe 31, a first motor 32, a second straight pipe 33, a cylinder 34, a first rotating shaft 35 and a connecting plate 36. The first straight pipe 31 is fixedly installed in communication with the bottom of the box body 1. The cylinder 34 is fixedly installed in communication with the bottom of the first straight pipe 31. The second straight pipe 33 is fixedly installed in communication with the bottom of the cylinder 34. The first motor 32 is fixedly installed on the side wall of the cylinder 34. The driving end of the first motor 32 is fixedly connected with the first rotating shaft 35, which is coaxially arranged with the cylinder 34. The connecting plate 36 is fixedly installed on the outer wall of the first rotating shaft 35 at equal intervals along the circumference. The outer end of the connecting plate 36 is slidingly connected with the inner wall of the cylinder 34, and the connecting plate 36 is provided with at least four groups.

[0061] During ash discharging, the cleaned ash falls into the first straight pipe 31. The first motor 32 drives the first rotating shaft 35 to intermittently rotate, which drives the connecting plate 36 to intermittently rotate. The space between adjacent connecting plates 36 is a storage bin. The connecting plate 36 drives the ash in the first straight pipe 31 to rotate into the second straight pipe 33, and then is discharged from the second straight pipe 33. The connecting plate 36 at the upper end of the first rotating shaft 35 blocks the bottom of the first straight pipe 31, so as to avoid air leakage during ash discharging.

[0062] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit it. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features. The modification or replacement will not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A purification production line for recovering nitrogen from the exhaust gas of a ceramic carrier of an automobile exhaust, comprising a filter (13), characterized in that: the input end and the output end of the filter (13) are fixedly connected with an exhaust gas source and a compressor (9) respectively; the output end of the compressor (9) is fixedly connected with an ice machine (10), the output end of the ice machine (10) is fixedly connected with a gas-liquid separator (11), and the gas outlet end of the gas-liquid separator (11) is fixedly connected with a purification unit (12); the filter (13) comprises a box body (1), a pulse generator (2), an air outlet pipe (5), cloth bags (6) and a cloth bag mounting plate (7), the cloth bag mounting plate (7) is fixedly installed on the inner wall of the box body (1), a plurality of groups of cloth bags (6) are fixedly installed on the bottom of the cloth bag mounting plate (7) in a rectangular array, the air outlet pipe (5) is fixedly installed on the side wall of the box body (1) in communication, and the air outlet pipe (5) is arranged higher than the cloth bag mounting plate (7); the side wall of the box body (1) is fixedly connected with a rotating air inlet pipe (4) for uniform air distribution, and the rotating air inlet pipe (4) is arranged lower than the cloth bag (6); the air outlet pipe (5) is fixedly connected with the input end of the compressor (9), and the outer end of the rotating air inlet pipe (4) is fixedly connected with the exhaust gas source; the pulse generator (2) is fixedly installed on the side wall of the box body (1), and the output end of the pulse generator (2) is fixedly connected with a back flushing assembly (8) for clearing the cloth bag (6) in a single row; and the air outlet end of the back flushing assembly (8) is located at the inner top of the cloth bag (6); the back flushing assembly (8) comprises a plurality of groups of follow-up air inlet assemblies, a group of synchronous adjusting assemblies, a plurality of groups of follow-up blocking assemblies and a plurality of groups of third straight pipes (811), the third straight pipes (811) are arranged one by one corresponding to the cloth bags (6), the air outlet ends of the third straight pipes (811) are located at the inner upper ends of the cloth bags (6), the plurality of groups of third straight pipes (811) are equally divided into a plurality of rows, the top of the third straight pipes (811) in a single row is connected with a group of follow-up air inlet assemblies and a group of follow-up blocking assemblies, the synchronous adjusting assemblies are movably connected with the follow-up air inlet assemblies and the follow-up blocking assemblies, a group of synchronous adjusting assemblies is fixedly installed on the cloth bag mounting plate (7), and a plurality of groups of follow-up air inlet assemblies are fixedly connected with the output end of the pulse generator (2). The rotating air inlet pipe (4) comprises an air inlet pipe (41), a rotating pipe (42), air outlet holes (43), a support plate (44), fan leaves (45), a second rotating shaft (46) and a connecting block (47), the air inlet pipe (41) is fixedly installed on the side wall of the box body (1), the support plate (44) is fixedly installed on the inner wall of the air inlet pipe (41), the second rotating shaft (46) is rotatably connected with the support plate (44) through a bearing, a plurality of groups of fan leaves (45) are fixedly installed on the outer end of the second rotating shaft (46) at equal intervals in the circumferential direction, the inner end of the second rotating shaft (46) is fixedly connected with the connecting block (47), the outer end of the connecting block (47) is fixedly connected with the rotating pipe (42), the rotating pipe (42) is coaxially arranged with the air inlet pipe (41) and has the same inner diameter size, and the rotating pipe (42) is provided with the air outlet holes (43) along the circumferential direction. The rotating pipe (42) is rotatably connected with the inner wall of the box body (1) through a bearing. ​ ​ ​ ​ ​ 2. The purification line for the recovery of nitrogen from the exhaust gases of automobiles according to claim 1, characterized in that, ​ 3. The purification line for the recovery of nitrogen from exhaust gases of automotive exhaust according to claim 2, characterized in that, ​ 4. The purification line for the recovery of nitrogen from exhaust gases of automotive exhaust according to claim 3, characterized in that, The follow-up type air inlet assembly comprises a first spring (81), a cross pipe (82), a straight cylinder (83), a first sliding rod (810), a second sliding rod (812), a valve core (813) and a ball (815), the straight cylinder (83) is fixedly connected with the cross pipe (82) through the through holes formed on both sides of the middle end of the straight cylinder (83), a group of cross pipes (82) are fixedly connected with the output end of the pulse generator (2), the third straight pipes (811) are fixedly installed at the bottom of the other group of cross pipes (82) at equal intervals, the inner wall of the valve core (813) is slidably connected with the inner wall of the straight cylinder (83), the air vent (814) is formed in the lower end of the valve core (813), the upper and lower ends of the valve core (813) are fixedly connected with the second sliding rod (812) and the first sliding rod (810), the top of the second sliding rod (812) is fixedly connected with the top of the first spring (81), the bottom of the first spring (81) is fixedly connected with the top of the straight cylinder (83), the bottom of the first sliding rod (810) is rotatably connected with the ball (815), the ball (815) is movably connected with the synchronous adjusting assembly, and the air vent (814) is arranged in a staggered mode with the cross pipe (82) when the first spring (81) is in an original state.

5. The purification line for the recovery of nitrogen from exhaust gases of automotive exhaust according to claim 4, characterized in that, The follow-up type plugging assembly comprises a second spring (84), a connecting cross plate (85), a second V-shaped plate (817), a hinged seat (819), an n-shaped plate (820), a fixed block (821), a sector plate (822) and a pushing rod (823), the second spring (84) is sleeved outside the third straight pipe (811), the upper and lower ends of the second spring (84) are fixedly connected with the other group of cross pipes (82) and the connecting cross plate (85) respectively, the second V-shaped plate (817) is fixedly installed at the end of the connecting cross plate (85) close to the straight cylinder (83), the second V-shaped plate (817) is movably connected with the synchronous adjusting assembly, the hinged seats (819) are fixedly connected with the sector plates (822) at equal intervals along the circumferences of the top of the cloth bag (6), the outer wall of the sector plate (822) is fixedly connected with the n-shaped plate (820), the inner wall of the n-shaped plate (820) is slidably connected with the outer wall of the pushing rod (823), the outer end of the pushing rod (823) is fixedly connected with the fixed block (821), the fixed block (821) is fixedly connected with the connecting cross plate (85), and the sector plate (822) is in an open state when the second spring (84) is in an original state, and the sector plates (822) are in contact with the third straight pipe (811) and block the top of the cloth bag (6) when the sector plate (822) is located at the lowermost end.

6. The purification line for the recovery of nitrogen from exhaust gases of automotive exhaust according to claim 5, characterized in that, The connecting cross plate (85) is slidably connected with the third straight pipe (811) through the sliding hole.

7. The purification line for the recovery of nitrogen from exhaust gases of automotive exhaust according to claim 6, characterized in that, The synchronous adjusting assembly comprises a guide rail assembly (86), a threaded rod (87), a first V-shaped block (88), a second motor (89), a Z-shaped plate (816) and a third V-shaped plate (818), the guide rail of the guide rail assembly (86) and the top of the cloth bag mounting plate (7) are fixedly connected, the output end of the second motor (89) is fixedly connected with the threaded rod (87), the Z-shaped plate (816) is threadedly connected with the threaded rod (87) through a threaded sleeve, the bottom of the Z-shaped plate (816) is fixedly connected with the sliding block of the guide rail assembly (86), one end of the Z-shaped plate (816) is fixedly connected with the first V-shaped block (88) matched with the spherical body (815), the other end of the Z-shaped plate (816) is fixedly connected with the third V-shaped plate (818) matched with the second V-shaped plate (817), the pointed part of the first V-shaped block (88) faces upward, and the pointed part of the third V-shaped plate (818) faces downward.

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