CN218760081U

CN218760081U - Bypass built-in type tail gas treatment device

Info

Publication number: CN218760081U
Application number: CN202222899459.2U
Authority: CN
Inventors: 苏兵; 胡家元; 郭丽娅
Original assignee: Guangdong Green Valley Environmental Protection Technology Co ltd
Current assignee: Guangdong Green Valley Environmental Protection Technology Co ltd
Priority date: 2022-11-01
Filing date: 2022-11-01
Publication date: 2023-03-28
Anticipated expiration: 2032-11-01

Abstract

The utility model belongs to the technical field of engine tail gas treatment, and discloses a bypass built-in tail gas treatment device, which comprises a main box body and a bypass valve assembly, wherein the main box body is provided with an air inlet port and an exhaust port; the bypass valve assembly comprises a valve, a bypass box body and a filter element unit, the bypass box body is located inside the main box body, a cavity between the outer wall of the bypass box body and the inner wall of the main box body is a second cavity, an inner cavity of the bypass box body is a first cavity, the bypass box body is arranged between the air inlet port and the air outlet port and separates the air inlet port and the air outlet port, the first cavity is communicated with the air inlet port, the second cavity is communicated with the air outlet port, a filter opening communicated with the first cavity and the second cavity is formed in the bypass box body, the filter element unit is arranged at the filter opening, and the valve is arranged on the bypass box body. The utility model discloses a reduce the built-in tail gas treatment device's of bypass whole volume, improve the installation convenience.

Description

Bypass built-in type tail gas treatment device

Technical Field

The utility model relates to an engine exhaust handles technical field, especially relates to a built-in tail gas processing apparatus of bypass.

Background

Engine exhaust discharges and is one of the pollution sources of air, in order to satisfy the environmental protection requirement, need carry out purification treatment to tail gas usually, current engine exhaust treatment equipment includes the particulate matter trap, the particulate matter trap includes the entrapment box, the filter core unit, central processing unit and bypass pipe, be equipped with the installing port on the entrapment box, the one end of filter core unit is located in the entrapment box through the installing port, the both ends of bypass pipe are connected respectively in the both ends of entrapment box, the filter core unit is located between two tie points of bypass pipe and entrapment box, current engine exhaust treatment equipment can effectively purify the particulate matter in the tail gas, avoid the black cigarette to appear in the tail gas. However, the bypass pipe in the existing engine tail gas treatment equipment is arranged outside the trapping box body and consists of two elbows and a straight pipe, and in some installation environments with strict requirements on the size of the volume, the installation convenience of the engine tail gas treatment equipment can be seriously influenced by the external bypass pipe, so that great troubles are brought to assembly production.

Therefore, a bypass built-in exhaust gas treatment device is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at: the bypass built-in tail gas treatment device is provided, the whole volume is reduced, and the installation convenience is improved.

To achieve the purpose, the utility model adopts the following technical proposal:

the bypass built-in tail gas treatment device comprises:

a main tank body provided with an intake port and an exhaust port;

the bypass valve assembly comprises a valve, a bypass box body and a filter element unit, wherein the bypass box body is located inside the main box body, the outer wall of the bypass box body and a cavity between the inner wall of the main box body are second cavities, the inner cavity of the bypass box body is a first cavity, the bypass box body is arranged between an air inlet port and an exhaust port and divides the air inlet port and the exhaust port, the first cavity is communicated with the air inlet port, the second cavity is communicated with the exhaust port, the bypass box body is provided with a filter opening communicated with the first cavity and the second cavity, the filter element unit is arranged in the filter opening, the filter element unit is used for filtering tail gas passing through the filter opening, and the valve is arranged on the bypass box body.

As an optional technical scheme, the bypass box body and the main box body share one top cover.

As an optional technical scheme, the top cover is provided with an installation opening, and the filter element unit is installed on the installation opening.

As an optional technical solution, the bypass box includes a bottom cover, the filter opening is opened in the bottom cover, the mounting opening is coaxial with the filter opening, and a central axis of the filter element unit is perpendicular to a central axis of the air inlet.

As an alternative solution, the inlet port is arranged coaxially with the outlet port.

As an optional technical solution, the bypass box and the main box share two supporting sidewalls, and the two supporting sidewalls are respectively located at two sides of a central axis of the air inlet port.

As an optional technical solution, a reinforcing column is installed on each of the two supporting sidewalls, the top of the reinforcing column is connected with the top cover, and the bottom of the reinforcing column is connected with the bottom cover.

As an optional technical solution, the valve is disposed on a side of the bypass box body away from the air inlet port.

As an optional technical solution, the bypass valve assembly further includes an electric control member, the electric control member is disposed outside the main tank, and the electric control member is electrically connected to the valve.

The beneficial effects of the utility model reside in that:

the utility model provides a built-in tail gas processing apparatus of bypass, this built-in tail gas processing apparatus of bypass includes the main tank body and bypass valve subassembly. The valve, the bypass box body and the filter element unit are arranged inside the main box body, so that the overall size of the bypass built-in tail gas treatment device is reduced, and the installation convenience can be ensured in an environment with smaller installation space; when the bypass built-in tail gas treatment device is started to operate, the valve is closed, pollutants such as particulate matters do not adhere to the surface of the filter element unit, the filtering capacity of the filter element unit is strongest at the moment, even if the tail gas carries a large amount of particulate matters, the filter element unit can completely filter the particulate matters, and the tail gas exhausted from the exhaust port is ensured to be purified; along with the continuous operation of the bypass built-in tail gas treatment device, the backpressure value of the filter element unit gradually rises, namely more and more particles adhered to the surface of the filter element unit, if the backpressure value of the filter element unit is smaller than a certain set range of a set value, the valve is still in a closed state, the flow path of the tail gas still enters the first cavity from the gas inlet port, and the tail gas in the first cavity is filtered by the filter element unit and then sequentially passes through the filter port, the second cavity and the exhaust port; after the bypass built-in tail gas treatment device operates to a certain time node, particulate matters adhered to the filter element unit reach a preset amount, so that the backpressure value of the filter element unit is increased, the air permeability of the filter element unit is reduced, at the moment, the valve is opened to reduce the pressure of the first cavity, the opening area of the valve is set within the preset value to ensure that the discharged untreated tail gas is within an acceptable range, a part of tail gas in the first cavity sequentially passes through the filter opening, the second cavity and the exhaust port after being filtered by the filter element unit, the purification rate of the part of tail gas is high, the other part of tail gas in the first cavity directly passes through the valve and is discharged from the exhaust port, the part of tail gas is not subjected to filtration treatment by the filter element unit, at the moment, the gas discharged from the exhaust port comprises the purified tail gas and the tail gas which is not subjected to the purification treatment, but the gas discharged from the exhaust port can meet the requirement of an emission index on the whole, the emission speed of the tail gas is increased by the valve, the gas pressure in the first cavity can be reduced, and the gas in the first cavity is prevented from passing through the inlet port and flowing back to the last component; the built-in tail gas processing apparatus of bypass lasts the operation, and the backpressure value of filter core unit is higher, and the area of opening of valve is big more, and up to no longer satisfying the emission index requirement from exhaust port exhaust tail gas, at this moment, the built-in tail gas processing apparatus of bypass stop operation takes out the filter core unit cleanness, will adhere in the particulate matter of filter core unit is whole to be clear away, the utility model discloses a valve can adjust many times, controls the pressure of first cavity and the emission of pollutant, increases trouble interval time.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and examples;

FIG. 1 is a schematic structural diagram of a bypass internal exhaust gas treatment device according to an embodiment;

FIG. 2 is a cross-sectional view of the bypass internal exhaust treatment device according to the embodiment.

In the figure:

1. a main box body; 11. an air inlet port; 12. an exhaust port; 13. a second cavity; 14. a top cover; 141. an installation port; 15. a support sidewall; 16. a reinforcement column;

2. a bypass valve assembly; 21. a valve; 22. a first cavity; 23. a bottom cover; 231. a filter port; 24. an electrical control.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are used in an orientation or positional relationship based on what is shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have a special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1 and 2, the present embodiment provides a bypass built-in exhaust gas treatment device, which includes a main tank 1 and a bypass valve assembly 2, the main tank 1 being provided with an intake port 11 and an exhaust port 12; the bypass valve assembly 2 comprises a valve 21, a bypass box body and a filter element unit, the bypass box body is positioned inside the main box body 1, a cavity between the outer wall of the bypass box body and the inner wall of the main box body 1 is a second cavity 13, the inner cavity of the bypass box body is a first cavity 22, the bypass box body is arranged between the air inlet port 11 and the air outlet port 12 and separates the air inlet port 11 from the air outlet port 12, the first cavity 22 is communicated with the air inlet port 11, the second cavity 13 is communicated with the air outlet port 12, the bypass box body is provided with a filter opening 231 communicated with the first cavity 22 and the second cavity 13, the filter element unit is arranged at the filter opening 231, the filter element unit is used for filtering tail gas passing through the filter opening 231, and the valve 21 is arranged on the bypass box body.

Specifically, the back pressure value of the filter element unit is an expression of the air permeability of the filter element unit, and the higher the back pressure value of the filter element unit is, the more pollutants are adhered to the filter element unit, and the lower the air permeability of the filter element unit is. In the embodiment, the valve 21, the bypass box body and the filter element unit are arranged in the main box body 1, so that the whole volume of the bypass built-in tail gas treatment device is reduced, and the installation convenience can be ensured in an environment with a small installation space; when the bypass built-in tail gas treatment device is started to operate, the valve 21 is closed, pollutants such as particulate matters do not adhere to the surface of the filter element unit, the filter element unit has the strongest filtering capability at the moment, even if the tail gas carries a large amount of particulate matters, the filter element unit can completely filter the particulate matters, and the tail gas exhausted from the exhaust port 12 is ensured to be purified; along with the continuous operation of the bypass built-in tail gas treatment device, the backpressure value of the filter element unit gradually rises, namely more and more particles adhered to the surface of the filter element unit, if the backpressure value of the filter element unit is smaller than a certain set range of a set value, the valve 21 is still in a closed state, the flow path of the tail gas still enters the first cavity 22 from the gas inlet port 11, and the tail gas in the first cavity 22 is filtered by the filter element unit and then sequentially passes through the filter port 231, the second cavity 13 and the exhaust port 12; after the bypass built-in type tail gas treatment device operates to a certain time node, particulate matters adhered to the filter element unit reach a preset amount, so that the backpressure value of the filter element unit is increased, the air permeability of the filter element unit is reduced, at the moment, the valve 21 is opened to reduce the pressure of the first cavity 22, the opening area of the valve 21 is set within the preset value to ensure that the discharged untreated tail gas is within an acceptable range, a part of tail gas in the first cavity 22 passes through the filter element unit for filtration and then sequentially passes through the filter opening 231, the second cavity 13 and the exhaust port 12, the purification rate of the part of tail gas is high, the other part of tail gas in the first cavity 22 directly passes through the valve 21 and is discharged from the exhaust port 12, the part of tail gas does not pass through the filter element unit for filtration, at the moment, the gas discharged from the exhaust port 12 comprises the purified tail gas and the tail gas which is not subjected to purification treatment, but the gas discharged from the exhaust port 12 can also meet the emission requirements on the whole, the emission rate of the discharged untreated tail gas is within the acceptable range, and the exhaust rate of the valve 21 is increased, so that the gas pressure in the first cavity 22 can be reduced, and the gas is prevented from flowing back to the first cavity 22 into the exhaust port 11; the bypass built-in type tail gas treatment device continuously operates, the higher the back pressure value of the filter element unit is, the larger the opening area of the valve 21 is until tail gas exhausted from the exhaust port 12 does not meet the emission index requirement any more, at the moment, the bypass built-in type tail gas treatment device stops operating, the filter element unit is taken out to be clean, particulate matters adhered to the filter element unit are completely removed, the valve 21 of the embodiment can be adjusted for multiple times, the pressure of the first cavity 22 and the pollutant emission amount are controlled, and the fault interval time is increased.

In this embodiment, the filter core unit adopts current filter core, and concrete structure no longer demonstrates.

Optionally, the bypass box body and the main box body 1 share one top cover 14, so that the overall weight of the bypass built-in tail gas treatment device is reduced, and the bypass built-in tail gas treatment device is convenient to carry, disassemble and assemble.

Optionally, the top cover 14 is provided with an installation opening 141, the filter element unit is installed in the installation opening 141, and when the filter element unit needs to be detached to remove the adhered pollutants, the filter element unit is directly detached from the installation opening 141 without detaching the main box body 1 or the bypass box body. In the present embodiment, the mounting port 141 is provided with a screw, and the filter cartridge unit is screw-mounted to the mounting port 141.

Optionally, the bypass box includes a bottom cover 23, the filter opening 231 is disposed on the bottom cover 23, the mounting opening 141 and the filter opening 231 are coaxially disposed, and a central axis of the filter element unit is perpendicular to a central axis of the air inlet 11. With the filter core unit vertical set up in main tank 1 and perpendicular with the central axis of inlet port 11 for the air that blows into in first cavity 22 from inlet port 11 contacts the surface of filter core unit perpendicularly, improves the filter effect, and when installing the filter core unit, conveniently passes installing port 141 and filtration mouth 231 with the filter core unit in proper order.

Alternatively, the intake port 11 is provided coaxially with the exhaust port 12.

In this embodiment, the bypass box and the main box 1 share two supporting sidewalls 15, and the two supporting sidewalls 15 are respectively located at two sides of the central axis of the air inlet 11, i.e. the bypass box actually has only one bottom cover 23, so that the overall weight of the bypass built-in exhaust gas treatment device can be greatly reduced, and the bypass built-in exhaust gas treatment device is convenient to carry, disassemble and assemble.

Optionally, the two supporting sidewalls 15 are both provided with a reinforcing column 16, the top of the reinforcing column 16 is connected with the top cover 14, and the bottom of the reinforcing column 16 is connected with the bottom cover 23, so as to improve the rigid supporting strength and prevent the main cabinet 1 from being collapsed.

Optionally, the valve 21 is disposed on a side of the bypass box away from the air inlet 11, that is, the valve 21 is mounted on the bottom cover 23, a side wall of the valve 21 is connected to an inner wall of the main box 1, and a body of the valve 21 is used as a part of the bypass box.

Optionally, the bypass valve assembly 2 further comprises an electric control member 24, the electric control member 24 is disposed outside the main box 1, and the electric control member 24 is electrically connected to the valve 21. The electric control part 24 is arranged outside the main box body 1, so that the electric control part can be conveniently disassembled and maintained without disassembling the main box body 1.

The embodiment also provides a control method, which is implemented by adopting the bypass built-in tail gas treatment device and comprises the following steps:

s100, starting a bypass built-in tail gas treatment device.

S200, acquiring the back pressure value of the filter element unit for multiple times, when the acquired back pressure value is greater than N% of the set value for the first time, opening the valve 21 for the first time, wherein the opening area of the valve 21 is N%, when the acquired back pressure value is increased by one grade, the opening area of the valve 21 is correspondingly increased by one grade, and when the back pressure value is equal to the set value, the valve 21 is completely opened.

S300, in the step S200, the tail gas discharged from the exhaust port 12 is detected every time the opening area of the valve 21 changes, if the tail gas discharge index meets the requirement, the bypass built-in tail gas treatment device continues to operate, and if the tail gas discharge index does not meet the requirement, the bypass built-in tail gas treatment device stops operating, and the filter element unit is drawn out for cleaning.

Specifically, the bypass built-in tail gas treatment device normally operates after being started, the valve 21 is closed, all tail gas is filtered by the filter element unit, when the backpressure value of the filter element unit rises to 75% of a set value, the valve 21 is opened by 2%, the opening area of the valve 21 is 2% of the maximum opening area, if the tail gas emission index meets the requirement, the bypass built-in tail gas treatment device continues to operate, if the tail gas emission index does not meet the requirement, the bypass built-in tail gas treatment device stops operating, and the filter element unit is drawn out to be clean; when the backpressure value of the filter element unit rises to 80% of a set value, the valve 21 is opened by 4%, the opening area of the valve 21 is 4% of the maximum value of the opening area, if the exhaust emission index still meets the requirement, the bypass built-in type exhaust treatment device continues to operate, if the exhaust emission index does not meet the requirement, the bypass built-in type exhaust treatment device stops operating, and the filter element unit is drawn out for cleaning; when the backpressure value of the filter element unit rises to 85% of the set value, the valve 21 is opened by 6%, the opening area of the valve 21 is 6% of the maximum value of the opening area, the exhaust emission index still meets the requirement, the bypass built-in exhaust treatment device continues to operate, if the exhaust emission index does not meet the requirement, the bypass built-in exhaust treatment device stops operating, and the filter element unit is drawn out for cleaning; when the backpressure value of the filter element unit rises to a set value, the valve 21 is completely opened, if the exhaust emission index still meets the requirement, namely under the condition that the exhaust does not carry pollutants, the bypass built-in exhaust treatment device continues to operate, and if the exhaust emission index does not meet the requirement, the bypass built-in exhaust treatment device stops operating, and the filter element unit is drawn out for cleaning.

In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A bypass built-in tail gas treatment device is characterized by comprising:

a main case (1) provided with an intake port (11) and an exhaust port (12);

bypass valve subassembly (2), including valve (21), bypass box and filter core unit, the bypass box is located the inside of the main tank body (1), the outer wall of bypass box with cavity between the inner wall of the main tank body (1) is second cavity (13), the inside cavity of bypass box is first cavity (22), the bypass box set up in admit air port (11) with between exhaust port (12) and with admit air port (11) with exhaust port (12) are separated, first cavity (22) with admit air port (11) communicate with each other, second cavity (13) with exhaust port (12) communicate with each other, the intercommunication has been seted up on the bypass box first cavity (22) with filter opening (231) of second cavity (13), the filter core unit set up in filter opening (231), the filter core unit is used for filtering the tail gas that passes filter opening (231), valve (21) set up in on the bypass box.

2. The exhaust gas treatment device with built-in bypass according to claim 1, wherein the bypass tank shares a top cover (14) with the main tank (1).

3. The bypass internal exhaust gas treatment device according to claim 2, wherein the top cover (14) is provided with a mounting opening (141), and the filter element unit is mounted at the mounting opening (141).

4. The bypass internal exhaust gas treatment device according to claim 3, wherein the bypass casing includes a bottom cover (23), the filter port (231) is opened in the bottom cover (23), the mounting port (141) is coaxially disposed with the filter port (231), and a central axis of the filter element unit is perpendicular to a central axis of the air inlet port (11).

5. The bypass internal exhaust gas treatment device according to claim 4, wherein the inlet port (11) is arranged coaxially with the outlet port (12).

6. The bypass internal exhaust gas treatment device according to claim 5, wherein the bypass box shares two support side walls (15) with the main box (1), the two support side walls (15) being respectively located on both sides of the central axis of the inlet port (11).

7. The bypass internal exhaust gas treatment device according to claim 6, wherein a reinforcing column (16) is mounted on each of the two supporting sidewalls (15), the top of the reinforcing column (16) is connected to the top cover (14), and the bottom of the reinforcing column (16) is connected to the bottom cover (23).

8. The bypass internal exhaust gas treatment device according to claim 7, wherein the valve (21) is disposed on a side of the bypass casing away from the inlet port (11).

9. The bypass internal exhaust gas treatment device according to any one of claims 1 to 8, wherein the bypass valve assembly (2) further comprises an electric control member (24), the electric control member (24) is disposed outside the main tank (1) and the electric control member (24) is electrically connected to the valve (21).