阅读说明：本技术 一种汽车尾气过滤装置 (Automobile exhaust filtering device ) 是由 杨希娅 陈大浩 杜小振 唐群委 于 2021-07-29 设计创作，主要内容包括：本发明用于汽车尾气处理技术领域,特别是涉及一种汽车尾气过滤装置,包括氧化铝陶瓷过滤器和罩壳,氧化铝陶瓷过滤器上开设氧化铝陶瓷过滤通道,氧化铝陶瓷过滤通道贯穿氧化铝陶瓷过滤器,氧化铝陶瓷过滤通道中放置高分子颗粒,罩壳上设有进气口和出气口,氧化铝陶瓷过滤器安装在罩壳内部,氧化铝陶瓷过滤通道的两端分别对应进气口和出气口,氧化铝陶瓷过滤通道的两端均安装拦截网,拦截网的孔径小于高分子颗粒的直径,在汽车自身振动以及尾气气流的作用下,高分子颗粒会与氧化铝陶瓷过滤通道的内壁之间发生碰撞或摩擦产生摩擦电势差,从而形成静电场以吸附PM颗粒,所以这种尾气过滤装置无需额外附加电场即可实现PM物理吸附与沉积所以成本更低。(The invention is used in the technical field of automobile exhaust treatment, in particular to an automobile exhaust filtering device, which comprises an alumina ceramic filter and a housing, wherein the alumina ceramic filter is provided with an alumina ceramic filtering channel, the alumina ceramic filtering channel penetrates through the alumina ceramic filter, polymer particles are placed in the alumina ceramic filtering channel, the housing is provided with an air inlet and an air outlet, the alumina ceramic filter is arranged in the housing, two ends of the alumina ceramic filtering channel respectively correspond to the air inlet and the air outlet, two ends of the alumina ceramic filtering channel are respectively provided with an intercepting net, the aperture of the intercepting net is smaller than the diameter of the polymer particles, under the action of the vibration of an automobile and the exhaust airflow, the polymer particles collide with the inner wall of the alumina ceramic filtering channel or rub to generate a friction potential difference, so as to form an electrostatic field to adsorb PM particles, therefore, the exhaust gas filtering device can realize PM physical adsorption and deposition without an additional electric field, so that the cost is lower.)

1. The utility model provides an automobile exhaust filter equipment which characterized in that: including aluminium oxide ceramic filter and housing, be equipped with aluminium oxide ceramic filter passageway on the aluminium oxide ceramic filter, aluminium oxide ceramic filter passageway runs through aluminium oxide ceramic filter, place the polymer granule in the aluminium oxide ceramic filter passageway, be equipped with air inlet and gas outlet on the housing, aluminium oxide ceramic filter installs inside the housing, aluminium oxide ceramic filter passageway's both ends correspond respectively the air inlet with the gas outlet, aluminium oxide ceramic filter passageway's both ends are all installed the interception net, the aperture of interception net is less than the diameter of polymer granule.

2. The automotive exhaust gas filtering device according to claim 1, characterized in that: the alumina ceramic filter is provided with a plurality of alumina ceramic filtering channels, and the alumina ceramic filtering channels are arranged on the alumina ceramic filter in an array mode.

3. The automotive exhaust gas filtering device according to claim 1, characterized in that: the raw material of the polymer particles is one of polytetrafluoroethylene, polydimethylsiloxane, polyvinyl chloride, polyimide, polypropylene and polyethylene.

4. The automotive exhaust gas filtering device according to claim 1, characterized in that: and the air inlet is provided with an air inlet pipe.

5. The automotive exhaust gas filtering device according to claim 1 or 4, characterized in that: and the air outlet is provided with an air outlet pipe.

6. The automotive exhaust gas filtering device according to claim 1, characterized in that: the alumina ceramic filter is connected with the inner wall of the housing in a sealing way.

7. The automotive exhaust gas filtering device according to claim 1, characterized in that: the outer wall of the alumina ceramic filtering channel is provided with a first electrode and a second electrode which are arranged at intervals, and the first electrode and the second electrode are used for being connected with a capacitor.

8. The automotive exhaust gas filtering device according to claim 2, characterized in that: the interception net is a copper net.

9. The automotive exhaust gas filtering device according to claim 2, characterized in that: the alumina ceramic filtering channels on the alumina ceramic filter are arranged in a 4 multiplied by 4 mode.

10. The automotive exhaust gas filtering device according to claim 2, characterized in that: the housing comprises a cover plate and a box body, one end of the box body is open, and the cover plate is detachably mounted at the open end of the box body.

Technical Field

The invention is used in the technical field of automobile exhaust treatment, and particularly relates to an automobile exhaust filtering device.

Background

In the existing motor vehicle exhaust filtering technology, the high-temperature catalyst has high cost and low filtering efficiency, and PM can not be filtered, so that the application of the existing filtering technology to a high-power engine is limited; another particulate filtering technology, electrostatic precipitation adsorption technology, is widely used in industry to collect PM with its advantages of low pressure drop and high filtering efficiency, however, electrostatic precipitation requires a high voltage electric field to consume a large amount of energy, which greatly increases the cost of PM filtering technology.

Disclosure of Invention

The invention aims to at least solve one technical problem in the prior art, and provides an automobile exhaust filtering device which can effectively filter PM and is lower in filtering cost.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an automobile exhaust filter equipment, includes alumina ceramic filter and housing, be equipped with alumina ceramic filter passageway on the alumina ceramic filter, alumina ceramic filter passageway runs through alumina ceramic filter, place the polymer granule in the alumina ceramic filter passageway, be equipped with air inlet and gas outlet on the housing, alumina ceramic filter installs inside the housing, the both ends that alumina ceramic filter passageway were corresponding respectively the air inlet with the gas outlet, the interception net is all installed at the both ends that alumina ceramic filter passageway, the aperture of interception net is less than the diameter of polymer granule.

The technical scheme at least has the following advantages or beneficial effects: in the automobile driving process, under the effect of automobile self vibration and exhaust gas flow, the polymer particles can collide or rub with the inner wall of the alumina ceramic filter channel, in the collision or friction process, the friction potential difference is generated between the hole wall of the alumina ceramic filter channel and the polymer particles, thereby forming an electrostatic field on the inner wall of the alumina ceramic filter channel to adsorb the PM particles flowing through the alumina ceramic filter channel, so the exhaust gas filter device does not need an additional electric field, but utilizes the flow of the automobile self vibration and the flow of the air flow to drive the friction between the polymer particles and the inner wall of the alumina ceramic filter channel to form the electric field, PM physical adsorption and deposition are realized, the whole structure is simpler, extra electric energy does not need to be consumed, and the filtering cost is lower.

As a further improvement of the technical scheme of the invention, a plurality of alumina ceramic filtering channels are arranged on the alumina ceramic filter, and the alumina ceramic filtering channels are arranged on the alumina ceramic filter in an array manner.

As a further improvement of the technical scheme of the invention, the raw material of the polymer particles is one of polytetrafluoroethylene, polydimethylsiloxane, polyvinyl chloride, polyimide, polypropylene and polyethylene.

Further as an improvement of the technical scheme of the invention, an air inlet pipe is arranged on the air inlet.

As a further improvement of the technical scheme of the invention, an air outlet pipe is arranged on the air outlet.

As the improvement of the technical scheme of the invention, the alumina ceramic filter is connected with the inner wall of the housing in a sealing way.

As a further improvement of the technical solution of the present invention, the outer wall of the alumina ceramic filter channel is provided with a first electrode and a second electrode which are arranged at intervals, and the first electrode and the second electrode are used for connecting a capacitor.

Further as an improvement of the technical scheme of the invention, the interception net is a copper net.

As a further improvement of the technical scheme of the invention, the alumina ceramic filter channels on the alumina ceramic filter are arranged in a 4 multiplied by 4 mode.

As a further improvement of the technical scheme of the invention, the cover comprises a cover plate and a box body, one end of the box body is open, and the cover plate is detachably arranged at the open end of the box body.

Drawings

The invention will be further described with reference to the accompanying drawings in which:

FIG. 1 is an exploded view of one embodiment of the present invention;

FIG. 2 is a schematic structural view of an alumina ceramic filter according to the embodiment of FIG. 1;

FIG. 3 is a schematic diagram of the movement of polymer particles in an alumina ceramic tube to a first electrode position in an illustrative embodiment of the invention;

FIG. 4 is a schematic diagram of the polymer particles moving to the gap between the first electrode and the second electrode in the alumina ceramic tube according to the embodiment of the present invention;

FIG. 5 is a schematic diagram of the movement of polymer particles in an alumina ceramic tube to the position of a second electrode according to the embodiment of the present invention.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the present invention, if directions (up, down, left, right, front, and rear) are described, it is only for convenience of describing the technical solution of the present invention, and it is not intended or implied that the technical features referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, it is not to be construed as limiting the present invention.

In the invention, the meaning of "a plurality" is one or more, the meaning of "a plurality" is more than two, and the terms of "more than", "less than", "more than" and the like are understood to exclude the number; the terms "above", "below", "within" and the like are understood to include the instant numbers. In the description of the present invention, if there is description of "first" and "second" only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the present invention, unless otherwise specifically limited, the terms "disposed," "mounted," "connected," and the like are to be understood in a broad sense, and for example, may be directly connected or indirectly connected through an intermediate; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be mechanically coupled, may be electrically coupled or may be capable of communicating with each other; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above-mentioned words in the present invention can be reasonably determined by those skilled in the art in combination with the detailed contents of the technical solutions.

Referring to fig. 1 to 5, the invention provides an automobile exhaust gas filtering device, which comprises an alumina ceramic filter 1 and a housing 2, wherein the alumina ceramic filter 1 is provided with an alumina ceramic filtering channel 12, polymer particles 5 are placed in the alumina ceramic filtering channel 12, the housing 2 is provided with an air inlet and an air outlet, the alumina ceramic filter 1 is installed in the housing 2, two ends of the alumina ceramic filtering channel 12 respectively correspond to the air inlet and the air outlet, two ends of the alumina ceramic filtering channel 12 are both provided with intercepting nets 10, and the aperture of the intercepting net 10 is smaller than the diameter of the polymer particles 5.

In the driving process of an automobile, under the action of the vibration of the automobile and the tail gas flow, the polymer particles 5 collide or rub with the inner wall of the alumina ceramic filtering channel 12, and in the collision or rubbing process, a friction potential difference is generated between the hole wall of the alumina ceramic filtering channel 12 and the polymer particles 5, so that an electrostatic field is formed on the inner wall of the alumina ceramic filtering channel 12 to adsorb PM particles flowing through the alumina ceramic filtering channel 12, so that the tail gas filtering device does not need an additional electric field, but utilizes the vibration of the automobile and the flow of the air flow to drive the friction between the polymer particles 5 and the inner wall of the alumina ceramic filtering channel 12 to form the electric field, and the physical adsorption and deposition of PM are realized, so that the whole structure is simpler, extra electric energy does not need to be consumed, and the filtering cost is lower.

In addition, the alumina ceramic has the properties of high melting point, high hardness and high wear resistance, so the service life of the alumina ceramic is longer.

The PM particles referred to in the present application are charged particles emitted from automobile exhaust.

In the present application, the alumina ceramic filter passage 12 is formed by an alumina ceramic filter tube 11 attached to the alumina ceramic filter 1, and a half of the alumina ceramic filter tube 11 is shown in fig. 3 to 5.

Of course, in addition to the installation of the alumina ceramic filter tubes 11, the alumina ceramic filter channels 12 may also be formed by directly forming corresponding channels in the alumina ceramic filter 1.

Referring to fig. 2, in other embodiments, a plurality of alumina ceramic filter channels 12 are disposed on the alumina ceramic filter 1, and the alumina ceramic filter channels 12 are arranged in an array on the alumina ceramic filter 1, so that the filtering efficiency can be improved.

For example, in the present invention, the alumina ceramic filter 1 has the alumina ceramic filter channels 12 arranged in a 4 × 4 pattern.

Referring to fig. 1, the alumina ceramic filter 1 of the present invention has a 50 × 50 × 50mm square structure, and the alumina ceramic filter passage 12 has a passage-type structure penetrating the alumina ceramic filter 1 along the width direction of the alumina ceramic filter 1.

The polymer particles 5 are one of polytetrafluoroethylene, polydimethylsiloxane, polyvinyl chloride, polyimide, polypropylene and polyethylene, and in the invention, the polymer particles 5 are polytetrafluoroethylene.

In some embodiments, the air inlet is provided with an air inlet pipe 3, the air outlet is provided with an air outlet pipe 4, the air inlet pipe 3 is butted with an automobile exhaust gas exhaust device, and the exhaust gas is filtered by the alumina ceramic filter 1 and then is exhausted from the air outlet pipe 4.

In order to ensure that all the exhaust gas discharged from the automobile can pass through the alumina ceramic filter 1, the alumina ceramic filter 1 is hermetically connected with the inner wall of the housing 2.

Specifically, sealing rubber is additionally arranged between the outer wall of the alumina ceramic filter 1 and the inner wall of the housing 2, so that tail gas is prevented from flowing through a gap between the alumina ceramic filter 1 and the housing 2, and the filtering efficiency is effectively improved.

In some embodiments, the interception net 10 is a copper net, the number of the copper nets is 100, the copper net has a certain thickness and flexibility, the certain thickness prevents the copper net from being deformed under the action of a larger air flow due to the fact that the copper net is too thin, and the copper net with the certain flexibility can prevent pores from being generated between the copper net and the side surface of the alumina ceramic filter 1 due to unevenness of the copper net in the pasting process.

In addition, the copper mesh also has the effect of intercepting large-diameter PM particles.

In some embodiments, the outer wall of the alumina ceramic filter channel 12 is provided with two first electrodes 60 and second electrodes 61 which are arranged at intervals, and the first electrodes 60 and the second electrodes 61 are used for connecting a capacitor.

Specifically, in the present invention, the first electrode 60 and the second electrode 61 are spaced along the length direction of the alumina ceramic filter channel 12, and when the polymer particles 5 move in the alumina ceramic filter channel 12, the alumina ceramic filter channel 12 is positively charged because the polymer particles 5 have a high negative charge.

When the polymer particles 5 move to the position of the first electrode 60, that is, the position of the polymer particles 5 in fig. 3, because the inner wall of the alumina ceramic filtering channel 12 has positive charges, an equal amount of negative charges are induced on the second electrode 61, and the negative charges on the surface of the polymer particles 5 and the positive charges on the inner wall of the alumina ceramic filtering channel 12 cannot be completely neutralized, at this time, the redundant negative charges on the surface of the polymer particles 5 induce positive charges on the first electrode 60, so that a potential difference is formed between the first electrode 60 and the second electrode 61, and a current flowing from the first electrode 60 to the second electrode 61 is formed, so that the first electrode 60 and the second electrode 61 can be connected to a capacitor of an automobile through a wire for charging, and thus the filtering device in the present application can not only filter exhaust gas, but also can realize power generation.

When the polymer particles 5 move to the position of the gap between the first electrode 60 and the second electrode 61, i.e., the position of the polymer particles 5 shown in fig. 4, the first electrode 60 and the second electrode 61 are in an electrostatic equilibrium state, and no electrons move between the first electrode 60 and the second electrode 61, so that the potential difference between the first electrode 60 and the second electrode 61 is close to 0.

When the polymer particles 5 move to the second electrode 61, i.e. the position shown in fig. 5, the first electrode 60 induces a negative charge, so that a current flows from the second electrode 61 to the first electrode 60.

Referring to fig. 1, in some embodiments, the housing 2 includes a cover plate 21 and a box 20, one end of the box 20 is open, the cover plate 21 is detachably mounted at the open end of the box 20, the alumina ceramic filter 1 is mounted inside the box 20 through the open end of the box 20, and then the cover plate 21 is covered at the open end of the box 20, so as to facilitate subsequent replacement and maintenance of the alumina ceramic filter 1.

The housing 2 is prepared by 3D printing, and the used material is photosensitive resin.

Of course, the present invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.