Waste gas treatment device

Abstract

The utility model discloses a waste gas treatment device which comprises a machine frame and a waste gas treatment box arranged on the machine frame, a waste gas treatment chamber is arranged in the waste gas treatment box, an air inlet and an air outlet are formed in the outer wall face of the waste gas treatment box, a flow equalizing cover is arranged between the waste gas treatment chamber and the air inlet, and a flow equalizing cavity is formed in the flow equalizing cover. The inner diameter of the flow equalizing cavity is gradually increased towards the direction of the air inlet, a plurality of through holes are distributed in the outer surface of the flow equalizing cover, the air inlet, the flow equalizing cover, the through holes, the waste gas treatment chamber and the air outlet are sequentially communicated to form a waste gas treatment channel, the section of the flow equalizing cavity is trapezoidal, and the flow equalizing cover comprises a flow equalizing bottom plate and a plurality of flow equalizing side plates surrounding the flow equalizing bottom plate; according to the waste gas treatment device disclosed by the utility model, waste gas can be uniformly dispersed into a waste gas treatment chamber, so that the waste gas treatment efficiency is higher, and the waste gas treatment is more sufficient.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection equipment, in particular to a waste gas treatment device. Background Art

[0002] With the development of economy, various industries such as chemical industry, coating, furniture, toy, electronics, spraying, etc. have developed rapidly, which also led to a large amount of industrial waste gas discharged into the atmosphere. The waste gas contains various harmful gases and particulate matter, which seriously affects the quality of atmospheric environment and also brings harm to human health.

[0003] At present, a waste gas treatment device is generally used to treat waste gas. The waste gas treatment device includes a frame and a waste gas treatment box arranged on the frame. A waste gas treatment chamber is arranged in the waste gas treatment box, and an air inlet and an air outlet are arranged outside the waste gas treatment box. The waste gas is input into the waste gas treatment chamber from the air inlet for adsorption, combustion, filtration or other treatment methods, and then discharged from the air outlet. Since the waste gas is usually concentrated in the center of the waste gas treatment chamber when it is input from the air inlet, the waste gas cannot be evenly dispersed into the waste gas treatment chamber, resulting in low waste gas treatment efficiency and insufficient waste gas treatment. Utility Model Content

[0004] The utility model aims at the defects of the prior art and provides a waste gas treatment device, which can make the waste gas evenly dispersed into the waste gas treatment chamber, so that the waste gas treatment efficiency is higher and the waste gas treatment is more complete.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An exhaust gas treatment device comprises a frame and an exhaust gas treatment box arranged on the frame, wherein an exhaust gas treatment chamber is arranged in the exhaust gas treatment box, an air inlet and an air outlet are arranged on the outer wall of the exhaust gas treatment box, a flow balancing cover is arranged between the exhaust gas treatment chamber and the air inlet, a flow balancing cavity is arranged in the flow balancing cover, the inner diameter of the flow balancing cavity gradually increases toward the air inlet, a plurality of through holes are distributed on the outer surface of the flow balancing cover, the air inlet, the flow balancing cover, the through holes, the exhaust gas treatment chamber and the air outlet are connected in sequence to form an exhaust gas treatment channel; by connecting the exhaust gas treatment chamber and the air inlet A flow balancing hood is arranged between the air inlets, and a flow balancing cavity is arranged inside the flow balancing hood. The inner diameter of the flow balancing cavity gradually increases toward the air inlet to form a trumpet shape. A plurality of through holes are distributed on the outer surface of the flow balancing hood. The air inlet, the flow balancing hood, the through holes, the exhaust gas treatment chamber and the air outlet are connected in sequence to form an exhaust gas treatment channel. After the exhaust gas is input from the air inlet, it is first gathered in the flow balancing cavity, and then is output to the exhaust gas treatment chamber in a uniformly dispersed manner from the plurality of through holes on the flow balancing hood in multiple directions, thereby avoiding the exhaust gas being concentrated in the central position of the exhaust gas treatment chamber, so that the exhaust gas treatment efficiency is higher and the exhaust gas treatment is more complete.

[0007] As a preferred embodiment, the cross-section of the flow equalizing cavity is trapezoidal, and the flow equalizing cover includes a flow equalizing bottom plate and a plurality of flow equalizing side plates surrounding the flow equalizing bottom plate, and a plurality of through holes are distributed on the flow equalizing bottom plate and the flow equalizing side plates, and the plane of the flow equalizing bottom plate is perpendicular to the air inlet direction of the air inlet, and the angle between the flow equalizing side plate and the flow equalizing bottom plate is an obtuse angle, and the flow equalizing bottom plate and the flow equalizing side plates form the flow equalizing cavity.

[0008] As a preferred solution, the flow balancing bottom plate and the flow balancing side plate are integrally formed.

[0009] As a preferred solution, the exhaust gas treatment box is an activated carbon adsorption and desorption box, and multiple activated carbon layers are arranged in the exhaust gas treatment chamber, and the multiple activated carbon layers are spaced apart along the flow direction of the exhaust gas.

[0010] As a preferred solution, a plurality of fixed beds are arranged in the exhaust gas treatment chamber, the activated carbon layer is arranged on the fixed bed, and a side wall of the activated carbon adsorption and desorption box is provided with an openable and closable box door.

[0011] As a preferred scheme, a first box body is provided on one side of the activated carbon adsorption and desorption box, a first inner cavity is provided in the first box body, the first inner cavity is connected to the equal flow cavity through a first pipe, the air inlet is an adsorption air inlet, the adsorption air inlet is provided on the outer wall of the first box body, and the outer wall of the first box body is also provided with a desorption air outlet, the adsorption air inlet and the desorption air outlet are both connected to the first inner cavity, and a second box body is provided on the other side of the activated carbon adsorption and desorption box, a second inner cavity is provided in the second box body, the second inner cavity is connected to the exhaust gas treatment chamber through a second pipe, the air outlet is an adsorption air outlet, the adsorption air outlet is provided on the outer wall of the second box body, and the outer wall of the second box body is also provided with a desorption air inlet, the adsorption air outlet and the desorption air inlet are both connected to the first inner cavity.

[0012] As a preferred solution, there are multiple first pipelines and multiple second pipelines.

[0013] As a preferred solution, the flow equalizing bottom plate is arranged in a square shape.

[0014] As a preferred solution, the flow-balancing side plates are arranged in a trapezoidal shape.

[0015] As a preferred solution, the exhaust gas treatment box is a dry filter box, and a first filter layer and a second filter layer are provided in the exhaust gas treatment chamber at intervals along the flow direction of the exhaust gas.

[0016] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, a flow balancing hood is arranged between the exhaust gas treatment chamber and the air inlet, and a flow balancing cavity is arranged in the flow balancing hood. The inner diameter of the flow balancing cavity gradually increases toward the air inlet to form a trumpet shape. A plurality of through holes are distributed on the outer surface of the flow balancing hood. The air inlet, the flow balancing hood, the through holes, the exhaust gas treatment chamber and the air outlet are connected in sequence to form an exhaust gas treatment channel. After the exhaust gas is input from the air inlet, it is first gathered in the flow balancing cavity, and then is output to the exhaust gas treatment chamber in a uniformly dispersed manner from the plurality of through holes on the flow balancing hood in multiple directions, thereby avoiding the exhaust gas being concentrated in the central position of the exhaust gas treatment chamber, so that the exhaust gas treatment efficiency is higher and the exhaust gas treatment is more complete.

[0017] In order to more clearly explain the structural features, technical means and specific purposes and functions achieved by the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the first embodiment of the utility model;

[0019] Figure 2 This is a front view of the flow balancing cover of the first embodiment of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the second embodiment of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the third embodiment of the utility model.

[0022] Description of the accompanying drawings:

[0023] 10-frame 20-waste gas treatment box 21-waste gas treatment room

[0024] 22-air inlet 23-air outlet 24-activated carbon layer

[0025] 25-fixed bed 26-first filter layer 27-second filter layer

[0026] 30-flow balancing cover 301-flow balancing bottom plate 302-flow balancing side plate

[0027] 31-flow balancing chamber 32-through hole 40-first box

[0028] 41-first inner cavity 42-first pipe 43-desorption outlet

[0029] 50-second box 51-second inner cavity 52-second pipeline

[0030] 53-Desorption air inlet DETAILED DESCRIPTION

[0031] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0033] like Figure 1-2 As shown, the utility model discloses an exhaust gas treatment device, including a frame 10 and an exhaust gas treatment box 20 arranged on the frame 10, wherein an exhaust gas treatment chamber 21 is arranged in the exhaust gas treatment box 20, and an air inlet 22 and an air outlet 23 are arranged on the outer wall of the exhaust gas treatment box 20.

[0034] A flow balancing cover 30 is provided between the exhaust gas treatment chamber 21 and the air inlet 22. A flow balancing cavity 31 is provided inside the flow balancing cover 30. The inner diameter d of the flow balancing cavity 31 gradually increases toward the air inlet 22. A plurality of through holes 32 are distributed on the outer surface of the flow balancing cover 30. The air inlet 22, the flow balancing cover 30, the through holes 32, the exhaust gas treatment chamber 21 and the air outlet 23 are connected in sequence to form an exhaust gas treatment channel.

[0035] The cross-section of the flow equalizing cavity 31 is set in a trapezoidal shape, and the flow equalizing cover 30 includes a flow equalizing bottom plate 301 and four flow equalizing side plates 302 surrounding the flow equalizing bottom plate 301. The flow equalizing bottom plate 301 and the flow equalizing side plates 302 are integrally formed, the flow equalizing bottom plate 301 is set in a square shape, and the flow equalizing side plates 302 are set in a trapezoidal shape. A number of through holes 32 are distributed on the flow equalizing bottom plate 301 and the flow equalizing side plates 302. The plane of the flow equalizing bottom plate 301 is perpendicular to the air inlet direction of the air inlet 22. The angle between the flow equalizing side plates 302 and the flow equalizing bottom plate 301 is an obtuse angle. The flow equalizing bottom plate 301 and the flow equalizing side plates 302 surround the flow equalizing cavity 31. By adopting a square-shaped flow equalizing bottom plate 301 and a trapezoidal-shaped flow equalizing side plate 302, the exhaust gas enters the exhaust gas treatment chamber 21 more evenly, and the processing and forming of the flow equalizing cover 30 is easy.

[0036] The exhaust gas treatment box 20 is an activated carbon adsorption and desorption box, and a plurality of activated carbon layers 24 are arranged in the exhaust gas treatment chamber 21, and the plurality of activated carbon layers 24 are spaced apart along the flow direction of the exhaust gas. Exemplarily, the activated carbon layer 24 has three layers. Specifically, a plurality of fixed beds 25 are arranged in the exhaust gas treatment chamber 21, and exemplary, the number of the fixed beds 25 is three. The fixed bed 25 is provided with a plurality of mesh holes (not shown), and the activated carbon layer 24 is arranged on the fixed bed. The side wall of the activated carbon adsorption and desorption box is provided with an openable and closable box door (not shown), and the fixed bed 25 can be taken out by opening the box door so as to replace the activated carbon layer 24.

[0037] A first box body 40 is provided on the upper side of the activated carbon adsorption and desorption box, and a first inner cavity 41 is provided in the first box body 40. The first inner cavity 41 is connected to the flow equalization cavity 31 through a first pipe 42. Specifically, a plurality of first pipes 42 are provided. The air inlet 22 is an adsorption air inlet 22, and the adsorption air inlet 22 is provided on the outer wall of the first box body 40. A desorption air outlet 43 is also provided on the outer wall of the first box body 40. Both the adsorption air inlet 22 and the desorption air outlet 43 are connected to the first inner cavity 41.

[0038] A second box body 50 is provided at the lower side of the activated carbon adsorption and desorption box, and a second inner cavity 51 is provided in the second box body 50. The second inner cavity 51 is connected to the exhaust gas treatment chamber 21 through a second pipe 52. Specifically, a plurality of second pipes 52 are provided. The air outlet 23 is an adsorption air outlet 23, and the adsorption air outlet 23 is provided on the outer wall of the second box body 50. A desorption air inlet 53 is also provided on the outer wall of the second box body 50. Both the adsorption air outlet 23 and the desorption air inlet 53 are connected to the first inner cavity 41.

[0039] like Figure 3 As shown, the second embodiment of the utility model is different from the first embodiment in that the exhaust gas treatment box 20 is a dry filter box, and the exhaust gas treatment chamber 21 is provided with a first filter layer 26 and a second filter layer 27 spaced apart along the flow direction of the exhaust gas, and the first filter layer 26 and the second filter layer 27 are respectively a primary filter screen and a medium filter screen.

[0040] like Figure 4 As shown, the third embodiment of the utility model is different from the first embodiment and the second embodiment in that the cross section of the flow equalizing cavity 31 is semi-arc-shaped or semi-circular.

[0041] The working principle of the activated carbon adsorption and desorption box of the utility model is as follows: the high-temperature exhaust gas enters from the adsorption air inlet 22 and passes through the first inner cavity 41, the first pipe 42, the flow-averaging cavity 31, the through hole 32, the exhaust gas treatment chamber 21, the activated carbon layer 24, the second pipe 52, the second inner cavity 51 in sequence, and then is discharged from the adsorption air outlet 23. In this process, the activated carbon layer 24 adsorbs harmful gases and particles in the high-temperature exhaust gas;

[0042] After the activated carbon layer 24 adsorbs a certain amount of harmful gases and particles, the high-temperature gas enters from the desorption air inlet 53 and passes through the second inner cavity 51, the second pipe 52, the exhaust gas treatment chamber 21, the activated carbon layer 24, the through hole 32, the flow equalization cavity 31, the first pipe 42, and the first inner cavity 41 in sequence before being discharged from the desorption air outlet 43. During this process, the high-temperature gas causes the harmful gases and particles adsorbed by the activated carbon layer 24 to decompose and separate from the activated carbon layer 24.

[0043] To sum up, the utility model sets a flow balancing hood 30 between the exhaust gas treatment chamber 21 and the air inlet 22, and sets a flow balancing cavity 31 in the flow balancing hood 30. The inner diameter of the flow balancing cavity 31 gradually increases toward the air inlet 22 to form a trumpet shape. A plurality of through holes 32 are distributed on the outer surface of the flow balancing hood 30. The air inlet 22, the flow balancing hood 30, the through holes 32, the exhaust gas treatment chamber 21 and the air outlet 23 are connected in sequence to form an exhaust gas treatment channel. After the exhaust gas is input from the air inlet 22, it is first gathered in the flow balancing cavity 31, and then is evenly dispersedly output to the exhaust gas treatment chamber 21 from the plurality of through holes 32 on the flow balancing hood 30 in multiple directions, thereby avoiding the exhaust gas being concentrated in the central position of the exhaust gas treatment chamber 21, so that the exhaust gas treatment efficiency is higher and the exhaust gas treatment is more complete.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Therefore, any modification, equivalent replacement, improvement, etc. made to the above embodiment based on the technical practice of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. An exhaust gas treatment device, comprising a frame and an exhaust gas treatment box arranged on the frame, wherein an exhaust gas treatment chamber is arranged in the exhaust gas treatment box, and an air inlet and an air outlet are arranged on the outer wall of the exhaust gas treatment box, characterized in that: A flow balancing cover is provided between the exhaust gas treatment chamber and the air inlet, a flow balancing cavity is provided in the flow balancing cover, the inner diameter of the flow balancing cavity gradually increases toward the air inlet, a plurality of through holes are distributed on the outer surface of the flow balancing cover, and the air inlet, the flow balancing cover, the through holes, the exhaust gas treatment chamber and the air outlet are sequentially connected to form an exhaust gas treatment channel; The cross-section of the flow equalizing cavity is trapezoidal, and the flow equalizing cover includes a flow equalizing bottom plate and a plurality of flow equalizing side plates surrounding the flow equalizing bottom plate. A plurality of through holes are distributed on the flow equalizing bottom plate and the flow equalizing side plates. The plane of the flow equalizing bottom plate is perpendicular to the air inlet direction of the air inlet, and the angle between the flow equalizing side plate and the flow equalizing bottom plate is an obtuse angle. The flow equalizing bottom plate and the flow equalizing side plates form the flow equalizing cavity.

2. The exhaust gas treatment device according to claim 1, characterized in that: The flow-balancing bottom plate and the flow-balancing side plate are integrally formed.

3. The exhaust gas treatment device according to claim 1, characterized in that: The exhaust gas treatment box is an activated carbon adsorption and desorption box. A plurality of activated carbon layers are arranged in the exhaust gas treatment chamber. The plurality of activated carbon layers are spaced apart along the flow direction of the exhaust gas.

4. The exhaust gas treatment device according to claim 3, characterized in that: The exhaust gas treatment chamber is provided with a plurality of fixed beds, the activated carbon layer is arranged on the fixed bed, and the side wall of the activated carbon adsorption and desorption box is provided with an openable and closable box door.

5. The exhaust gas treatment device according to claim 3, characterized in that: A first box body is provided on one side of the activated carbon adsorption and desorption box, a first inner cavity is provided in the first box body, the first inner cavity is connected to the flow-averaging cavity through a first pipe, the air inlet is an adsorption air inlet, the adsorption air inlet is provided on the outer wall of the first box body, and a desorption air outlet is also provided on the outer wall of the first box body, and the adsorption air inlet and the desorption air outlet are both connected to the first inner cavity; A second box body is provided on the other side of the activated carbon adsorption and desorption box, a second inner cavity is provided in the second box body, the second inner cavity is connected with the exhaust gas treatment chamber through a second pipe, the air outlet is an adsorption air outlet, the adsorption air outlet is provided on the outer wall of the second box body, and a desorption air inlet is also provided on the outer wall of the second box body, and the adsorption air outlet and the desorption air inlet are both connected with the first inner cavity.

6. The exhaust gas treatment device according to claim 5, characterized in that: There are multiple first pipelines and multiple second pipelines.

7. The exhaust gas treatment device according to claim 1, characterized in that: The flow-balancing bottom plate is arranged in a square shape.

8. The exhaust gas treatment device according to claim 1, characterized in that: The flow-balancing side plate is arranged in a trapezoidal shape.

9. The exhaust gas treatment device according to claim 1, characterized in that: The exhaust gas treatment box is a dry filter box, and a first filter layer and a second filter layer are arranged in the exhaust gas treatment chamber at intervals along the flow direction of the exhaust gas.

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