阅读说明：本技术 一种用于机动车尾气处理、降噪的装置 (Device for treating and reducing noise of motor vehicle tail gas ) 是由 曹治国 王嫣格 全丽俊 王萌萌 施世宇 赵友华 石玉洋 吴欣源 常宇 于 2019-10-26 设计创作，主要内容包括：本发明公开了一种用于机动车尾气处理、降噪的装置,包括安装有三效催化器的横置环柱状结构的催化室,所述催化室左端依次设置有锥环台结构状的除硫室和环柱状结构的除铅室,所述除铅室、除硫室和催化室的左右两端环面上均密封固定有定法兰,所述催化室的左端的定法兰上设有连接机构并通过连接机构与除硫室相邻的一端的定法兰密封固定在一起,本发明可以便捷更换除硫室和除铅室内的原料,便于维护,降低维修成本,从而使发动机尾气中脱硫和脱铅在实际应用中变得可行,还间接提高三效催化器的净化效率和延长使用时间,经过处理后的尾气从装置末端的直管式消声器排出可以降低机动车的噪音。(The invention discloses a device for treating and reducing noise of motor vehicle tail gas, which comprises a catalysis chamber with a transverse annular columnar structure and provided with a three-effect catalyst, the left end of the catalytic chamber is sequentially provided with a desulfurizing chamber with a cone ring platform structure and a lead removing chamber with a ring columnar structure, fixed flanges are hermetically fixed on the ring surfaces at the left end and the right end of the lead removing chamber, the sulfur removing chamber and the catalyzing chamber, the fixed flange at the left end of the catalytic chamber is provided with the connecting mechanism and is sealed and fixed with the fixed flange at the adjacent end of the sulfur removal chamber through the connecting mechanism, the invention can conveniently replace the raw materials in the sulfur removal chamber and the lead removal chamber, is convenient to maintain, reduces the maintenance cost, therefore, the desulfurization and the deleading in the tail gas of the engine become feasible in practical application, the purification efficiency of the three-way catalyst is indirectly improved, the service life is prolonged, and the noise of the motor vehicle can be reduced by discharging the treated tail gas from the straight pipe type silencer at the tail end of the device.)

1. A device for treating and reducing noise of motor vehicle tail gas comprises a catalytic chamber with a transverse annular columnar structure provided with a three-effect catalyst, and is characterized in that a sulfur removal chamber with a conical annular table structure and a lead removal chamber with an annular columnar structure are sequentially arranged at the left end of the catalytic chamber, fixed flanges are hermetically fixed on the right end of the lead removal chamber and the ring surfaces at the left end and the right end of the sulfur removal chamber and the catalytic chamber, a connecting mechanism is arranged on the fixed flange at the left end of the catalytic chamber and is hermetically fixed with the fixed flange at one end adjacent to the sulfur removal chamber through the connecting mechanism, the connecting mechanism comprises a movable flange with a convex ring table axially arranged in the middle and a wrench ring disc sleeved on the catalytic chamber in a sliding manner, the convex ring table of the movable flange is hermetically and slidably sleeved in the left end of the catalytic chamber and can slide left and right along the inner annular wall of the catalytic chamber, a plurality of support rods penetrating through the fixed flange at the left end of the catalytic chamber are axially arranged on the flange ring disc of the movable flange along, the other end of bracing piece all links together with the spanner dish on the catalysis room, the bracing piece all can be in the fixed flange that runs through on the axial slip, on the connection structure all the cover be equipped with on the connecting rod between movable flange and the fixed flange and push up movable flange outwards the axial, the flange ring dish of movable flange is together fixed with the fixed flange of sulphur removal room right-hand member is sealed, it has clinoptilolite to remove the indoor packing of plumbous, it has active carbon except that the flow tube to remove the indoor packing of sulphur.

2. The device for treating motor vehicle tail gas and reducing noise according to claim 1, wherein the left end of the lead removing chamber is fixedly connected with an exhaust port of a motor vehicle engine in a sealing way through a metal joint.

3. The device for treating the tail gas of the motor vehicle and reducing the noise according to claim 1 or 2, wherein a gas buffer chamber is fixedly connected to the right end of the catalytic chamber in a sealing manner, a straight pipe type silencer is fixedly connected to the other end of the gas buffer chamber in a sealing manner, and the lead removing chamber, the sulfur removing chamber, the catalytic chamber, the buffer chamber and the straight pipe type silencer are coaxially arranged.

4. The apparatus for treating motor vehicle exhaust gases and reducing noise according to claim 1, wherein the catalyst in the three-way catalyst is CeO 2.

5. The device for motor vehicle exhaust gas treatment and noise reduction according to claim 1, wherein the length dimension of the connecting rod is a, and the height dimension of the convex ring platform of the movable flange is b, wherein a < b.

6. The device for treating motor vehicle exhaust gas and reducing noise according to claim 1, wherein the coupling mechanism moving flange has a mounting groove circumferentially formed on a circumferential side surface of a top end of the protruding collar, the mounting groove being fitted with the seal ring therein and the seal ring radially protruding out of the mounting groove.

7. The device for treating motor vehicle exhaust gases and reducing noise according to claim 1, wherein the outer ring diameter of the fixed flange provided with the connecting mechanism is c, and the outer ring diameter of the wrench ring disk of the connecting mechanism is d, wherein d > c.

8. The device for treating the tail gas of the motor vehicle and reducing the noise according to claim 1 or 7, wherein the fixed ring disc at the right end of the lead removing chamber is provided with a connecting mechanism and is hermetically connected with one end adjacent to the sulfur removing chamber through the connecting mechanism.

9. The device for treating the tail gas of the motor vehicle and reducing the noise of the tail gas of the motor vehicle as claimed in claim 1, wherein one end of the movable flange on the connecting mechanism at the left end of the catalysis chamber is provided with a shaft hole and is hinged with the fixed flange at the left end of the catalysis chamber through a pin shaft.

10. The device for treating motor vehicle tail gas and reducing noise according to claim 1, wherein 4 supporting rods penetrating through the fixed ring disc are uniformly and axially arranged on the flange ring disc of the movable flange along the circumference.

Technical Field

The invention belongs to the technical field of motor vehicle tail gas treatment, and particularly relates to a device for treating and reducing noise of motor vehicle tail gas.

Background

In China, the automobile industry is rapidly developed in recent years, random automobiles are increased, the total amount of pollutant emission is also increased continuously, the automobile exhaust emission becomes the main source of urban air pollution in China, and the air pollution type of a large city with more than 100 million people in China is converted from a coal-smoke type to a mixed type or an automobile pollution type; according to the new standard requirement of motor vehicle exhaust detection execution executed from 11.1.2019, a motor vehicle detection station updates and upgrades detection equipment, the exhaust detection accuracy is increased, the emission limit standard is stricter, oxynitride detection is added to a diesel vehicle, vehicle OBD (vehicle fault diagnosis instrument) inspection is added before the exhaust detection, then a fault lamp of the vehicle displays or detects a fault, the exhaust detection cannot be carried out, the condition that the annual inspection of the motor vehicle exhaust is failed to be jointly carried out by an environmental protection administrative department and a public security traffic administration department, traffic policemen are responsible for commanding, intercepting the vehicle and the treatment of the vehicle exceeding the standard, environmental protection personnel are responsible for monitoring, and the condition of the law enforcement personnel is explained to relative people on site. When the phenomenon that the gasoline vehicle emits black smoke and blue smoke is found in the inspection, the blackness of the tail gas of the diesel vehicle exceeds Ringelmann 1 level, the traffic police punishs and temporarily withholds the vehicle number plate and the driving certificate according to the law and the place, and keeps temporarily withholding certificates, the environment protection law enforcement personnel give out a notice of administration of the responsible order to the opposite person of the illegal vehicle and punish according to the law.

At present, the tail gas treatment usually adopts a secondary air supply combustion method at the front end of an exhaust pipe, namely, an air supply hole and an air supply guide pipe are arranged at the end of a cylinder head exhaust hole close to the exhaust pipe, so that a large amount of carbon monoxide and hydrocarbon are changed into harmless carbon dioxide and water to be discharged. However, the temperature of the exhaust gas after re-combustion is too high, and when the engine works for a long time, the secondary air supply channel can cause the aging of the exhaust pipe, i.e. the exhaust pipe cannot be used durably. Most of the conventional tail gas treatment devices are three-way catalytic converters, which are mainly exhaust purification devices for converting CO, HC and NOx in tail gas discharged from motor vehicles into gases harmless to human bodies, but most of the conventional technologies ignore a small amount of sulfur and lead contained in the tail gas of the motor vehicles, the presence of sulfur can reduce the catalytic conversion efficiency, and the presence of lead can permanently poison a catalyst in the three-way catalytic converter, so that the treatment effect is ineffective.

Most of the current researches are dedicated to the treatment and purification of automobile exhaust, but the purification of the motorcycle exhaust is neglected, the engine used by the motorcycle is an automobile engine, a large amount of exhaust is generated as the automobile is driven, sulfur and lead contained in the adsorbed exhaust can be eliminated in the prior art, but the actual raw material consumption is large, the exhaust is filled into a pipe fitting during the application, the pipe fitting is welded with a three-way catalytic converter or is connected with the three-way catalytic converter through a flange in a sealing way, but the raw material needs to be replaced after being used for a period of time, and the replacement frequency is large, so the exhaust is not effectively utilized.

Disclosure of Invention

Aiming at the defects and problems of the existing turbocharger, the invention provides a device for treating and reducing the noise of motor vehicle tail gas, which is provided with a sulfur removal chamber and a lead removal chamber in front of a three-way catalytic converter, so as to eliminate and treat sulfur and lead in the motor vehicle tail gas, and raw materials in the sulfur removal chamber and the lead removal chamber can be conveniently replaced, thereby enabling the desulfurization and the deleading in the motor vehicle tail gas to be feasible in practical application.

The technical scheme adopted by the invention for solving the technical problems is as follows: a device for treating and reducing noise of motor vehicle tail gas comprises a catalysis chamber of a transverse annular columnar structure provided with a three-effect catalyst, wherein a sulfur removal chamber of a conical ring platform structure and a lead removal chamber of an annular columnar structure are sequentially arranged at the left end of the catalysis chamber, fixed flanges are hermetically fixed on the ring surfaces of the left end and the right end of the lead removal chamber, the sulfur removal chamber and the catalysis chamber, fixed flanges are arranged on the fixed flanges at the left end of the catalysis chamber and are hermetically fixed with the fixed flanges at one end adjacent to the sulfur removal chamber through connecting mechanisms, each connecting mechanism comprises a movable flange and a wrench ring disc, a convex ring platform of the movable flange is axially provided with a convex ring platform, the movable flange and the wrench ring disc are sleeved on the catalysis chamber in a sealing mode, the convex ring platform of the movable flange is sleeved in the left end of the catalysis chamber in a sealing mode and can slide left and right along the inner ring wall of the catalysis chamber, a plurality of support rods penetrating through the fixed flange at the left end of the, the other end of bracing piece all links together with the spanner dish on the catalysis room, the bracing piece all can be in the fixed flange that runs through on the axial slip, on the connection structure all the cover be equipped with on the connecting rod between movable flange and the fixed flange and push up movable flange outwards the axial, the flange ring dish of movable flange is together fixed with the fixed flange of sulphur removal room right-hand member is sealed, it has clinoptilolite to remove the indoor packing of plumbous, it has active carbon except that the flow tube to remove the indoor packing of sulphur.

Furthermore, the left end of the lead removing chamber is fixedly connected with an exhaust port of an engine of a motor vehicle in a sealing way through a metal joint.

Furthermore, the right end of the catalysis chamber is fixedly connected with a gas buffer chamber in a sealing manner, the other end of the gas buffer chamber is fixedly connected with a straight pipe type silencer in a sealing manner, and the lead removing chamber, the sulfur removing chamber, the catalysis chamber, the buffer chamber and the straight pipe type silencer are all coaxially arranged.

Further, the catalyst in the three-way catalyst is CeO 2.

Furthermore, the length of the connecting rod is a, and the height of the convex ring platform of the movable flange is b, wherein a is less than b.

Furthermore, a mounting groove is formed in the circumferential side face of the top end of the convex ring table of the connecting mechanism movable flange along the circumference, a sealing ring is sleeved in the mounting groove, and the sealing ring protrudes out of the mounting groove in the radial direction.

Furthermore, the diameter of the outer ring of the fixed flange provided with the connecting mechanism is c, and the diameter of the outer ring of the wrench ring disc of the connecting mechanism is d, wherein d is larger than c.

Furthermore, a connecting mechanism is arranged on a fixed ring disc at the right end of the lead removing chamber and is connected with one end, adjacent to the sulfur removing chamber, of the lead removing chamber in a sealing mode through the connecting mechanism.

Furthermore, one end of a movable flange on the connecting mechanism at the left end of the catalytic chamber is provided with a shaft hole and is hinged with a fixed flange at the left end of the catalytic chamber through a pin shaft.

Furthermore, 4 supporting rods penetrating through the fixed ring disc are uniformly and axially arranged on the flange ring disc of the movable flange along the circumference.

The invention has the beneficial effects that: the invention provides a device for treating and reducing noise of motor vehicle tail gas, which comprises a lead removing chamber, a sulfur removing chamber, a catalytic chamber, a buffer chamber and a straight pipe type silencer, wherein the lead removing chamber and the sulfur removing chamber are arranged in front of the catalytic chamber, clinoptilolite is filled in the lead removing chamber for taking out lead in the tail gas and preventing the lead from permanently poisoning a catalyst of a three-way catalytic converter in the catalytic chamber so as to disable the three-way catalytic converter, an activated carbon sulfur removing pipe is filled in the sulfur removing chamber for taking out sulfur in the tail gas and preventing the sulfur from reducing the catalytic conversion efficiency of the three-way catalytic converter, the lead removing chamber, the sulfur removing chamber and the catalytic chamber are connected together through flanges, when tail gas treatment raw materials in the device need to be replaced, the device is convenient to disassemble and replace, the maintenance is convenient, the maintenance cost is reduced, and rare earth oxide CeO2 is used as the catalyst in the three-way catalytic converter, because CeO2 not only has good oxygen storage capacity, but also can be used as a catalyst for buffering the change of the air-fuel ratio, thereby reducing the economic cost; the treated tail gas is discharged through the straight pipe type silencer, so that the noise of the motor vehicle can be reduced.

The device for processing the noise-reducing tail gas of the motorcycle, provided by the invention, can conveniently replace raw materials in the sulfur removal chamber and the lead removal chamber, is convenient to maintain, and reduces the maintenance cost, so that the desulfurization and the lead removal in the tail gas of the engine become feasible in practical application, the purification efficiency of the three-way catalyst is indirectly improved, the service life is prolonged, and the noise of a motor vehicle can be reduced by discharging the processed tail gas from the straight pipe type silencer at the tail end of the device.

Drawings

FIG. 1 is a schematic view of the present invention.

Fig. 2 is a schematic view of a partial cross-sectional structure of fig. 1.

Fig. 3 is a schematic structural view of the dynamic flange of the invention.

Fig. 4 is a schematic view of the connecting mechanism of the present invention.

Fig. 5 is a schematic illustration of the disassembly process of fig. 1.

FIG. 6 is a second schematic view of the present invention.

Fig. 7 is a schematic illustration of the disassembly process of fig. 6.

FIG. 8 is a third schematic view of the present invention.

Fig. 9 is a schematic illustration of the disassembly process of fig. 8.

Reference numbers in the figures: 1 is a lead removing chamber, 2 is a sulfur removing chamber, 3 is a catalytic chamber, 4 is a buffer chamber, 5 is a straight pipe type muffler, 6 is a frame fixing frame, 8 is a fixed flange disc a, 9 is a fixed flange disc b, 10 is a fixed flange disc c, 11 is a fixed flange disc d, 12 is a movable flange, 13 is a spanner ring disc, 14 is a connecting rod, 17 is a top spring, 18 is clinoptilolite, 19 is an activated carbon sulfur removing pipe, 20 is a three-way catalytic converter, 21 is a heat-insulating and shock-absorbing sealing gasket,

22 is a stainless steel shell, 23 is a movable flange, 24 is a flange table, 25 is a connecting rod, 27 is a sealing ring a, 28 is a pin shaft, and 29 is a bolt.

Detailed Description

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