CN110173329B

CN110173329B - Three-way catalytic converter

Info

Publication number: CN110173329B
Application number: CN201910630789.1A
Authority: CN
Inventors: 不公告发明人
Original assignee: Katcon Shanghai Exhaust Control System Co ltd
Current assignee: KATCON (SHANGHAI) EXHAUST CONTROL SYSTEM Co.,Ltd.
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2022-01-18
Anticipated expiration: 2039-07-12
Also published as: CN110173329A

Abstract

The invention relates to the field of three-way catalysts, in particular to a three-way catalyst, which comprises a shell, a through hole, an air outlet pipe, an opposite punching mechanism, a first branch pipe, a second branch pipe, a partition plate, an air inlet pipe, a flow distribution mechanism, a base, a motor, a rotating shaft, a first baffle, a second baffle, a collection bin, a ceramic carrier, a vibration mechanism, a sliding ring, a supporting rod, a convex block, a spring, a sliding rod, a fixing ring and a filter screen. The automobile exhaust is shunted by the shunt mechanism through the use of the hedging mechanism matched with the shunt mechanism, and the exhaust enters the shell from the two ends of the shell in different time periods through the hedging mechanism, so that the hedging is realized, and impurities stuck on the surface of the filter screen are flushed and fall into the collection bin, so that the collection and the cleaning of the impurities are facilitated; through the use of counterpunch mechanism cooperation vibrations mechanism, make vibrations mechanism vibrations to make vibrations mechanism carry out the condition to the aperture on the filter screen, thereby prevent that the aperture on the filter screen from plugging up, thereby more there is the collection of impurity.

Description

Three-way catalytic converter

Technical Field

The invention relates to the field of three-way catalysts, in particular to a three-way catalyst.

Background

The three-way catalyst is installed outside the automobile exhaust system and can convert harmful gas, such as CO, HC, NOx, etc. exhausted from automobile exhaust into harmless carbon dioxide, water and nitrogen via oxidation and reduction. When high-temperature automobile exhaust passes through the purification device, the purifying agent in the three-way catalyst enhances the activity of three gases of CO, HC and NOx to promote the three gases to carry out certain oxidation-reduction chemical reaction, wherein CO is oxidized into colorless and nontoxic carbon dioxide gas at high temperature; HC compounds are oxidized at high temperature to water (H20) and carbon dioxide; NOx is reduced to nitrogen and oxygen. Three kinds of harmful gases are changed into harmless gases, so that the automobile exhaust can be purified. The three-way catalyst is one of the most important external purifier installed in automobile exhaust system and can convert harmful gas exhausted from automobile exhaust, such as CO, HC hydrocarbon, NOx, etc. into harmless carbon dioxide, water and nitrogen via oxidation and reduction. The catalyst can simultaneously convert three main harmful substances in the exhaust gas into harmless substances, so the catalyst is called as a ternary catalyst.

When the automobile works in a low-temperature state for a long time, the three-way catalyst cannot be started, soot discharged by an engine can be attached to the surface of the catalyst, so that the soot cannot be contacted with CO and HC, and pores of a carrier are blocked after the soot is left for a long time, so that the conversion efficiency of the carrier is influenced; and after plugging, the impression of automobile exhaust emissions causes gas to accumulate in the exhaust pipe, resulting in increased heat in the exhaust pipe.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a three-way catalyst; the automobile exhaust is shunted by the shunt mechanism through the use of the hedging mechanism matched with the shunt mechanism, and the exhaust enters the shell from the two ends of the shell in different time periods through the hedging mechanism, so that the hedging is realized, and the impurities stuck on the surface of the filter screen are flushed and fall into the collection bin, so that the collection of the impurities is facilitated, and the impurities are convenient to clean; through the use of counterpunch mechanism cooperation vibrations mechanism to make gaseous when through impact mechanism, make vibrations mechanism vibrations, thereby make vibrations mechanism carry out the condition to the aperture on the filter screen, thereby prevent that the aperture on the filter screen from plugging up, thereby more there is the collection of impurity.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a three way catalyst converter, includes casing, outlet duct, hedging mechanism, intake pipe, reposition of redundant personnel mechanism, collects storehouse, ceramic carrier, vibrations mechanism and filter screen for the protection casing fixed connection is used for giving vent to anger the outlet duct for ventilate hedging mechanism fixed connection is used for admitting air the intake pipe is used for the reposition of redundant personnel the fixed rotation of reposition of redundant personnel mechanism is connected the intake pipe is used for collecting collect the storehouse with be used for the protection threaded connection between the casing is used for vibrations the vibrations mechanism fixed connection is used for the protection the casing, ceramic carrier fixed connection is used for the protection the casing is used for the separation filter screen fixed connection is used for the protection the inner wall of casing.

Specifically, the opposite-flushing mechanism comprises a first branch pipe, a second branch pipe and a partition plate, wherein one end of the first branch pipe is fixedly connected with one end of the shell, one end of the second branch pipe is fixedly connected with the other end of the shell, the other end of the first branch pipe is fixedly connected with the air inlet pipe, the other end of the second branch pipe is fixedly connected with the air inlet pipe, and the partition plate is fixedly connected with the inner wall of the air inlet pipe.

Specifically, reposition of redundant personnel mechanism includes base, motor, axis of rotation, first baffle and second baffle, base fixed connection the intake pipe, motor fixed mounting in the base, the motor rotates to be connected the intake pipe, the axis of rotation rotates to be connected the intake pipe with the baffle, first baffle fixed connection the axis of rotation, second baffle fixed connection the axis of rotation, first baffle perpendicular to the second baffle, first baffle with the second baffle shape is the same, the size is the same.

Specifically, vibrations mechanism includes slip ring, bracing piece, lug, spring, slide bar and solid fixed ring, gu fixed ring fixed connection the lateral wall of casing, gu fixed ring is equipped with the filter screen with between the ceramic carrier, the one end fixed connection of slide bar gu fixed ring deviates from the one end of ceramic carrier, the other end fixed connection of slide bar the filter screen, slip ring sliding connection the slide bar, the both ends fixed connection of bracing piece the slip ring, the lug is fixed in the bracing piece deviates from the one end of ceramic carrier, the spring cup joints the slide bar, the one end fixed connection of spring the slip ring, the other end fixed connection of spring gu fixed ring.

Specifically, be equipped with on the casing communicate the casing inside with the through-hole in collection storehouse, the through-hole is located the filter screen deviates from the one end of slip ring.

The invention has the following beneficial effects:

(1) according to the three-way catalytic converter, the hedging mechanism is matched with the shunting mechanism, so that automobile exhaust is shunted through the shunting mechanism, and exhaust enters the shell from two ends of the shell in different time periods through the hedging mechanism, so that hedging is realized, and impurities adhered to the surface of the filter screen are flushed and fall into the collecting bin, so that the impurities are conveniently collected and are conveniently cleaned.

(2) According to the three-way catalytic converter, the impact mechanism is matched with the vibration mechanism, so that when gas passes through the impact mechanism, the vibration mechanism vibrates, the vibration mechanism can perform conditions on small holes in the filter screen, the small holes in the filter screen are prevented from being blocked, and impurities are collected.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural diagram of a three-way catalyst according to a preferred embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the housing shown in FIG. 1;

FIG. 3 is a schematic cross-sectional view A-A of FIG. 2;

FIG. 4 is an enlarged view of the portion B shown in FIG. 2;

fig. 5 is an enlarged schematic view of the portion C shown in fig. 2.

In the figure: 1. the device comprises a shell, a through hole, a gas outlet pipe, a counter-flushing mechanism, a first branch pipe, a second branch pipe, a partition plate, a gas inlet pipe, a flow dividing mechanism, a base 51, a base 52, a motor, a rotating shaft 53, a rotating shaft 54, a first baffle plate 55, a second baffle plate 6, a collecting bin 7, a ceramic carrier 8, a vibrating mechanism 81, a sliding ring 82, a supporting rod 83, a lug, 84, a spring 85, a sliding rod 86, a fixing ring 9 and a filter screen.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-5, the three-way catalyst of the present invention comprises a casing 1, an air outlet pipe 2, a hedging mechanism 3, an air inlet pipe 4, a flow dividing mechanism 5, a collecting bin 6, a ceramic carrier 7, a vibrating mechanism 8 and a filter screen 9, the shell 1 for protection is fixedly connected with the air outlet pipe 2 for air outlet, the opposite flushing mechanism 3 for ventilation is fixedly connected with the air inlet pipe 4 for air inlet, the shunting mechanism 5 for shunting is fixedly and rotatably connected with the air inlet pipe 4, the collecting bin 6 for collecting is in threaded connection with the shell 1 for protecting, be used for vibrations 8 fixed connection of vibrations mechanism is used for the

protection casing

1, 7 fixed connection of ceramic carrier are used for the protection casing 1, be used for the separation filter screen 9 fixed connection is used for the protection the inner wall of casing 1.

Specifically, the opposite-punching mechanism 3 comprises a first branch pipe 31, a second branch pipe 32 and a partition plate 33, wherein one end of the first branch pipe 31 is fixedly connected with one end of the shell 1, one end of the second branch pipe 32 is fixedly connected with the other end of the shell 1, the other end of the first branch pipe 31 is fixedly connected with the air inlet pipe 4, the other end of the second branch pipe 32 is fixedly connected with the air inlet pipe 4, and the partition plate 33 is fixedly connected with the inner wall of the air inlet pipe 4; so that the gas passing through the gas inlet pipe 4 is divided by the partition 33 into the first branch pipe 31 and the second branch pipe 32, respectively, and thus the gas is introduced from both ends of the housing 1 through the first branch pipe 31 and the second branch pipe 32.

Specifically, the flow dividing mechanism 5 includes a base 51, a motor 52, a rotating shaft 53, a first baffle 54 and a second baffle 55, the base 51 is fixedly connected to the air inlet pipe 4, the motor 52 is fixedly mounted on the base 51, the motor 52 is rotatably connected to the air inlet pipe 4, the rotating shaft 53 is rotatably connected to the air inlet pipe 4 and the partition plate 33, the first baffle 54 is fixedly connected to the rotating shaft 53, the second baffle 55 is fixedly connected to the rotating shaft 53, the first baffle 54 is perpendicular to the second baffle 55, and the first baffle 54 and the second baffle 55 have the same shape and the same size; the rotating shaft 53 is driven by the motor 52 to rotate, so that the first baffle 54 and the second baffle 55 block the space of the air inlet pipe 4 separated by the partition plate 33 for blocking, and when the first baffle 54 blocks, the second baffle 55 is perpendicular to the first baffle 54, so that the air enters the housing 1 from the second air pipe, after the motor 52 rotates 90 °, the second baffle 55 blocks the space between the partition plate 33 and the air inlet pipe 4, and the first baffle 54 is opened, so that the air enters the housing 1 from the first air pipe.

Specifically, the vibration mechanism 8 includes a sliding ring 81, a supporting rod 82, a convex block 83, a spring 84, a sliding rod 85 and a fixing ring 86, the fixing ring 86 is fixedly connected to the side wall of the casing 1, the fixing ring 86 is arranged between the filter screen 9 and the ceramic carrier 7, one end of the sliding rod 85 is fixedly connected to one end of the fixing ring 86 away from the ceramic carrier 7, the other end of the sliding rod 85 is fixedly connected to the filter screen 9, the sliding ring 81 is slidably connected to the sliding rod 85, two ends of the supporting rod 82 are fixedly connected to the sliding ring 81, the convex block 83 is fixed to one end of the supporting rod 82 away from the ceramic carrier 7, the spring 84 is sleeved on the sliding rod 85, one end of the spring 84 is fixedly connected to the sliding ring 81, and the other end of the spring 84 is fixedly connected to the fixing ring 86; so as to strike the holes of the sieve 9 by means of the lugs 83 and thus prevent the sieve 9 from clogging.

Specifically, a through hole 1a communicating the inside of the housing 1 with the collection bin 6 is formed in the housing 1, and the through hole 1a is formed in one end, away from the sliding ring 81, of the filter screen 9; thereby be convenient for pass through the impurity that filter screen 9 blockked is followed through-hole 1a drops extremely in collecting bin 6, thereby be convenient for pass through collecting bin 6 collects impurity.

When in use, the second baffle 55 firstly plugs the space formed between the air inlet pipe 4 and the baffle, the first baffle 54 is perpendicular to the second baffle 55, so that the air passes through the space at one end of the first baffle 54 between the air inlet pipe 4 and the baffle from the air inlet pipe 4 and enters the shell 1 through the first branch pipe 31, the impurities in the air are blocked by the filter screen 9 close to the top end of the shell 1, the impurities fall into the collecting bin 6 from the through hole 1a on the top end of the shell 1, the sliding ring 81 close to the top end of the shell 1 slides on the sliding rod 85 due to the impact of the air, the spring 84 is compressed, the supporting rod 82 and the lug 83 slide on the sliding rod 85 towards the ceramic carrier 7 along the ring 81, and the activity of three gases of CO, HC and NOx is enhanced by the purifying agent on the ceramic carrier 7, so that certain oxidation-reduction chemical reaction is performed, wherein CO is oxidized into colorless and nontoxic carbon dioxide gas at high temperature; HC compounds are oxidized at high temperature to water (H20) and carbon dioxide; NOx is reduced to nitrogen and oxygen. The three harmful gases are changed into harmless gases, so that the automobile exhaust is purified, and the purified gases are discharged from the gas outlet pipe 2; and the gas moves in the ceramic carrier 7, strikes the screen 9 at the bottom end of the housing 1, so that the impurities accumulated on the screen 9 are struck, thereby dropping the impurities on the screen 9, and the impurities drop from the through holes 1a on the housing 1 near the bottom end of the housing 1 into the collection bin 6; then, the motor 52 rotates 90 °, and at the same time, the spring 84 near the top end of the housing 1 opens, so that the sliding ring 81 slides on the sliding rod 85 toward the filter screen 9, the protrusion 83 on the supporting rod 82 on the sliding ring 81 hits the filter screen 9 and penetrates through the small hole on the filter screen 9, so as to prevent the small hole on the filter screen 9 from being blocked, so as to drive the rotating shaft 53 to rotate 90 °, the motor 52 drives the first baffle 54 and the second baffle 55 to rotate 90 °, the first baffle 54 blocks the space formed between the air inlet pipe 4 and the baffles, the first baffle 54 is perpendicular to the second baffle 55, so that the air passes through the space at one end of the second baffle 55 between the air inlet pipe 4 and the baffles from the air inlet pipe 4, enters the housing 1 through the second branch pipe 32, the impurities in the air are blocked by the filter screen 9 near the bottom end of the housing 1, and the impurities fall from the through hole 1a near the bottom end of the housing 1 to the collecting bin 6 on the housing 1, and the impact of the gas makes the slip ring 81 close to the bottom end of the housing 1 slide on the slide bar 85, thereby compressing the spring 84, the support bar 82 and the bump 83 slide on the slide bar 85 toward the ceramic carrier 7 along the slip ring 81, and the purifying agent on the ceramic carrier 7 will enhance the activity of three gases of CO, HC and NOx, promoting them to perform certain oxidation-reduction chemical reaction, wherein CO is oxidized into colorless, nontoxic carbon dioxide gas at high temperature; HC compounds are oxidized at high temperature to water (H20) and carbon dioxide; NOx is reduced to nitrogen and oxygen. The three harmful gases are changed into harmless gases, so that the automobile exhaust is purified, and the purified gases are discharged from the gas outlet pipe 2; and the gas moves in the ceramic carrier 7, strikes the screen 9 at the top end of the housing 1, so that the impurities accumulated on the screen 9 are struck, thereby dropping the impurities on the screen 9, and the impurities drop from the through holes 1a on the housing 1 near the top end of the housing 1 into the collection bin 6; at last when needs clearance, will collect storehouse 6 and change the pine to moving to the both ends of casing 1, thereby making impurity drop from between casing 1 and the gap of collecting storehouse 6, thereby be convenient for clear up impurity.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A three-way catalyst, characterized by: comprises a shell (1), an air outlet pipe (2), a hedging mechanism (3), an air inlet pipe (4), a flow dividing mechanism (5), a collecting bin (6), a ceramic carrier (7), a vibrating mechanism (8) and a filter screen (9), the shell (1) for protection is fixedly connected with the air outlet pipe (2) for air outlet, the hedging mechanism (3) for ventilation is fixedly connected with the air inlet pipe (4) for air inlet, the shunting mechanism (5) for shunting is fixedly and rotatably connected with the air inlet pipe (4), the collection bin (6) for collecting and the shell (1) for protecting are connected by screw threads, the vibration mechanism (8) for vibration is fixedly connected with the shell (1) for protection, the ceramic carrier (7) is fixedly connected with the shell (1) for protection, the filter screen (9) for blocking is fixedly connected with the inner wall of the shell (1) for protection;

the opposite flushing mechanism (3) comprises a first branch pipe (31), a second branch pipe (32) and a partition plate (33), one end of the first branch pipe (31) is fixedly connected with one end of the shell (1), one end of the second branch pipe (32) is fixedly connected with the other end of the shell (1), the other end of the first branch pipe (31) is fixedly connected with the air inlet pipe (4), the other end of the second branch pipe (32) is fixedly connected with the air inlet pipe (4), and the partition plate (33) is fixedly connected with the inner wall of the air inlet pipe (4);

the flow dividing mechanism (5) comprises a base (51), a motor (52), a rotating shaft (53), a first baffle (54) and a second baffle (55), the base (51) is fixedly connected with the air inlet pipe (4), the motor (52) is fixedly installed on the base (51), the motor (52) is rotatably connected with the air inlet pipe (4), the rotating shaft (53) is rotatably connected with the air inlet pipe (4) and the partition plate (33), the first baffle (54) is fixedly connected with the rotating shaft (53), the second baffle (55) is fixedly connected with the rotating shaft (53), the first baffle (54) is perpendicular to the second baffle (55), and the first baffle (54) and the second baffle (55) are identical in shape and size;

the vibration mechanism (8) comprises a sliding ring (81), a supporting rod (82), a convex block (83), a spring (84), a sliding rod (85) and a fixing ring (86), the fixing ring (86) is fixedly connected with the side wall of the shell (1), the fixing ring (86) is provided with the filter screen (9) and the ceramic carrier (7), one end of the sliding rod (85) is fixedly connected with the fixing ring (86) deviating from one end of the ceramic carrier (7), the other end of the sliding rod (85) is fixedly connected with the filter screen (9), the sliding ring (81) is slidably connected with the sliding rod (85), two ends of the supporting rod (82) are fixedly connected with the sliding ring (81), the convex block (83) is fixed at one end of the supporting rod (82) deviating from the ceramic carrier (7), and the spring (84) is sleeved with the sliding rod (85), one end of the spring (84) is fixedly connected with the sliding ring (81), and the other end of the spring (84) is fixedly connected with the fixed ring (86);

be equipped with on casing (1) communicate inside casing (1) with through-hole (1a) in collection storehouse (6), through-hole (1a) are located filter screen (9) deviate from the one end of slip ring (81).