Waste gas collecting and purifying system for colored aluminum pigment production workshop

Abstract

The utility model relates to a waste gas collecting and purifying system for a colored aluminum pigment production workshop, which comprises a waste gas conveying pipeline, a plate type activated carbon filter, a negative pressure fan and a plurality of waste gas absorbing covers arranged on the waste gas conveying pipeline, a cleaning assembly and a collecting and screening assembly used for collecting and screening materials scraped by the cleaning assembly are further arranged on the waste gas conveying pipeline and located in front of an air inlet of the plate type activated carbon filter. Waste gas is filtered through the filter screen and the plate-type activated carbon filter, the filter screen can filter out large particles, particles conveyed to the plate-type activated carbon filter are small, loss of the plate-type activated carbon filter is reduced, and long service life is kept. The cleaning assembly regularly cleans the filter screen and the inner wall of the waste gas conveying pipeline, cleaned materials are collected, screened and classified through the collecting and screening assembly, the structure is simple, the filter screen can be regularly cleaned conveniently, and use is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste gas collection and treatment equipment, and specifically relates to a waste gas collection and purification system for a color aluminum pigment production workshop. Background Art

[0002] The production process of colored aluminum pigments may produce harmful substances such as fluoride, chloride, sulfide, etc., and when the colored aluminum pigments after filtering are unloaded from the aluminum pigment filter press, some powdered colored aluminum pigments will float in the production workshop. If the waste gas containing the above-mentioned harmful substances and powdered colored aluminum pigments is directly discharged into the atmosphere without treatment, it will pollute the environment, affect the air quality, and even cause harm to the ecosystem and human health. In addition, if there are powdered colored aluminum pigments floating in the production workshop, they are easy to be inhaled into the lungs by the staff, causing harm to human health. For this reason, it is necessary to install a waste gas collection and purification system in the colored aluminum pigment production workshop.

[0003] The waste gas collection and purification system in the prior art is generally composed of a waste gas adsorption hood, a conveying pipeline, a plate-type activated carbon filter and a negative pressure fan. During use, the powdered colored aluminum pigments and some packaging plastic particles larger than the powdered colored aluminum pigments floating in the air in the production workshop will be sucked in through the waste gas adsorption hood and conveyed to the plate-type activated carbon filter through the conveying pipeline. However, no preliminary filtering structure is set before the plate-type activated carbon filter. The powdered colored aluminum pigments and some packaging plastic particles larger than the powdered colored aluminum pigments will directly enter the plate-type activated carbon filter, which may easily cause the plate-type activated carbon filter to be overloaded and shorten its service life. Utility Model Content

[0004] The purpose of the utility model is to provide an exhaust gas collection and purification system for a color aluminum pigment production workshop in order to solve the above-mentioned problem. The utility model aims to solve the technical problem that in the prior art, the exhaust gas collection and purification system is generally composed of an exhaust gas adsorption hood, a conveying pipeline, a plate-type activated carbon filter and a negative pressure fan, and no preliminary filtering structure is set before the plate-type activated carbon filter, and powdered color aluminum pigments and some packaging plastic particles larger than the powdered color aluminum pigments directly enter the plate-type activated carbon filter, which easily leads to an overload of the plate-type activated carbon filter and a shortened service life.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] An exhaust gas collection and purification system for a color aluminum pigment production workshop, comprising an exhaust gas delivery pipeline, a plate-type activated carbon filter, a negative pressure fan and a plurality of exhaust gas absorption covers arranged on the exhaust gas delivery pipeline, which are connected in sequence. A cleaning component and a collecting and screening component for collecting and screening materials scraped by the cleaning component are also arranged on the exhaust gas delivery pipeline in front of the air inlet of the plate-type activated carbon filter;

[0007] The cleaning component includes two support plates symmetrically arranged in the exhaust gas conveying pipe, a rotating shaft rotatably connected between the two support plates, a filter screen arranged on the rotating shaft, a support seat arranged on the inner wall of the exhaust gas conveying pipe, a plurality of filter screen scrapers arranged on the inner wall of the exhaust gas conveying pipe and in contact with the inlet and exhaust side walls of the filter screen, and a plurality of pipe wall scrapers arranged on the rotating shaft and located on both sides of the inlet and exhaust of the filter screen. The filter screen and the support seat are rotatably connected via a bearing.

[0008] As a further optimization solution of the utility model, a discharge port and a mesh plate are provided at the bottom of the waste gas conveying pipe, located below the filter scraper and the pipe wall scraper.

[0009] As a further optimization scheme of the utility model, the cleaning assembly includes a collection box disposed at the bottom of the exhaust gas conveying pipeline and below the mesh plate, and a screening frame rotatably connected to the inside of the collection box, and movable grooves for the screening frame to rotate are provided on both sides of the inside of the collection box;

[0010] Alternating pressing pieces are arranged above both sides of the screening frame, and resetting sliding pieces are arranged below both sides of the screening frame.

[0011] As a further optimization scheme of the utility model, the alternating pressing member includes two push rods symmetrically arranged and connected to the bottom of the exhaust gas conveying pipe in an up-and-down sliding manner, the top and lower sections of the push rods are both provided with a horizontal plate, a spring 2 is provided between the bottom of the exhaust gas conveying pipe and the horizontal plate located above, and the horizontal plate located below is located at the bottom of the exhaust gas conveying pipe and extends to the inside of the movable groove;

[0012] The alternating pressing member further comprises an eccentric wheel 1 and an eccentric wheel 2 which are arranged on the rotating shaft. The eccentric wheel 1 and the eccentric wheel 2 are respectively located above the two push rods and are used for pressing the push rods to move downward.

[0013] As a further optimization scheme of the utility model, the reset sliding member includes four sliding blocks respectively arranged on the front and rear side walls and the left and right side walls of the screening frame, and a sliding limit frame arranged inside the collecting box and corresponding one-to-one with the sliding blocks. The sliding block is slidably connected to the sliding limit frame, and a spring is arranged between the bottom of the sliding block and the bottom of the sliding limit frame.

[0014] As a further optimization solution of the utility model, the protrusion positions of the eccentric wheel 1 and the eccentric wheel 2 are staggered with each other.

[0015] As a further optimization solution of the utility model, the screening frame includes a frame body and a screening mesh door hinged to the bottom of the frame body.

[0016] As a further optimization solution of the utility model, a sealing door is hinged at the bottom of the collection box.

[0017] The beneficial effects of the utility model are:

[0018] 1) The utility model filters the exhaust gas through the filter screen and the plate-type activated carbon filter. The filter screen can filter out larger particles, and the large particles transported to the plate-type activated carbon filter are smaller, which reduces the loss of the plate-type activated carbon filter and maintains a longer service life. The filter screen and the inner wall of the exhaust gas conveying pipe on both sides of the filter screen intake and exhaust are regularly cleaned by the cleaning component. The cleaned materials are collected and screened and classified by the collecting and screening component. The structure is simple, the filter screen is easy to clean regularly, and the operation is convenient and easy to use.

[0019] 2) The utility model drives the filter screen and the pipe wall scraper to rotate by rotating the shaft, so that the material on the filter screen can be scraped and cleaned by the filter screen scraper, and the material on the inner wall of the exhaust gas conveying pipe can be scraped and cleaned by the pipe wall scraper. The rotation of the shaft can also press the two sides of the frame alternately through the eccentric wheel 1, the eccentric wheel 2 and the push rod, so that the frame swings up and down, and the material inside the frame can be screened. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 It is a front cross-sectional view of the cleaning component and the screening component of the utility model.

[0022] Figure 3 It is a front sectional view of the screening frame of the utility model.

[0023] Figure 4 It is a cross-sectional view of the liquid storage box and the soil storage box of the utility model.

[0024] In the figure: 1. exhaust gas conveying pipeline; 2. exhaust gas absorption hood; 3. plate activated carbon filter; 4. negative pressure fan; 5. support plate; 6. rotating shaft; 7. filter screen; 8. support seat; 9. filter screen scraper; 10. pipe wall scraper; 11. servo motor; 12. mesh plate; 13. collecting box; 14. moving trough; 15. screening frame; 151. frame; 152. screening mesh door; 16. sliding block; 17. sliding limit frame; 18. spring one; 19. push rod; 20. cross plate; 21. spring two; 22. eccentric wheel one; 23. eccentric wheel two; 24. sealing door. DETAILED DESCRIPTION

[0025] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0026] like Figure 1-4 As shown, an exhaust gas collection and purification system for a color aluminum pigment production workshop includes an exhaust gas conveying pipeline 1, a plate-type activated carbon filter 3, a negative pressure fan 4, and a plurality of exhaust gas absorption covers 2 arranged on the exhaust gas conveying pipeline 1, which are connected in sequence. The exhaust gas conveying pipeline 1 is also provided with a cleaning component and a collecting and screening component for collecting and screening materials scraped by the cleaning component in front of the air inlet of the plate-type activated carbon filter 3;

[0027] The cleaning component includes two support plates 5 symmetrically arranged in the exhaust gas conveying pipe 1, a rotating shaft 6 rotatably connected between the two support plates 5, a filter screen 7 arranged on the rotating shaft 6, a support seat 8 arranged on the inner wall of the exhaust gas conveying pipe 1, a plurality of filter screen scrapers 9 arranged on the inner wall of the exhaust gas conveying pipe 1 and in contact with the inlet and outlet side walls of the filter screen 7, and a plurality of pipe wall scrapers 10 arranged on the rotating shaft 6 and located on the inlet and outlet sides of the filter screen 7. The filter screen 7 and the support seat 8 are rotatably connected through a bearing.

[0028] It should be noted that, in the present embodiment, one end of the rotating shaft 6 is connected to a servo motor 11 , and the rotating shaft 6 is driven to rotate by the operation of the servo motor 11 .

[0029] Preferably, a discharge port and a mesh plate 12 are provided at the bottom of the waste gas conveying pipe 1 below the filter scraper 9 and the pipe wall scraper 10 .

[0030] Preferably, the cleaning assembly comprises a collecting box 13 disposed at the bottom of the exhaust gas conveying pipe 1 and below the mesh plate 12, and a screening frame 15 rotatably connected to the inside of the collecting box 13, and movable grooves 14 for the screening frame 15 to rotate are provided on both sides of the collecting box 13;

[0031] Alternating pressing pieces are provided above both sides of the screening frame 15 , and resetting sliding pieces are provided below both sides of the screening frame 15 .

[0032] Preferably, the alternating pressing member comprises two push rods 19 symmetrically arranged and connected to the bottom of the exhaust gas conveying pipe 1 in an upward and downward sliding manner, the top and lower sections of the push rods 19 are both provided with a horizontal plate 20, a spring 21 is provided between the bottom of the exhaust gas conveying pipe 1 and the horizontal plate 20 located above, and the horizontal plate 20 located below is located at the bottom of the exhaust gas conveying pipe 1 and extends to the inside of the moving groove 14;

[0033] The alternating pressing member further comprises an eccentric wheel 1 22 and an eccentric wheel 23 disposed on the rotating shaft 6. The eccentric wheel 1 22 and the eccentric wheel 23 are respectively located above the two push rods 19 and are used to press the push rods 19 to move downward.

[0034] Preferably, the reset sliding member includes four sliding blocks 16 respectively arranged on the front and rear side walls and the left and right side walls of the screening frame 15, and a sliding limit frame 17 arranged inside the collecting box 13 and corresponding one-to-one with the sliding blocks 16. The sliding block 16 is slidably connected to the sliding limit frame 17, and a spring 18 is provided between the bottom of the sliding block 16 and the bottom inside the sliding limit frame 17.

[0035] Preferably, the protruding positions of the eccentric wheel 1 22 and the eccentric wheel 2 23 are staggered with each other, so that when the rotating shaft 6 rotates, the eccentric wheel 1 22 can be driven to rotate together, thereby pressing the push rod 19 alternately through the eccentric wheel 1 22 and the eccentric wheel 2 23 .

[0036] When in use, the negative pressure fan 4 is started to extract air to form a negative pressure state. On this basis, the waste gas in the color aluminum pigment production workshop can be adsorbed by the waste gas absorption cover 2, and then transported through the waste gas conveying pipeline 1. The filter screen 7 will filter the materials in the waste gas. The gas filtered by the filter screen 7 will be transported to the plate-type activated carbon filter 3 for re-filtration and adsorption treatment, and then discharged through the negative pressure fan 4;

[0037] The filter 7 is cleaned regularly. When cleaning the filter 7, the servo motor 11 is first started. The servo motor 11 drives the rotating shaft 6 to rotate. The rotating shaft 6 drives the filter 7 to rotate. The filter 7 rotates, and the filter scraper 9 can scrape the materials adhered to the side walls of the filter 7 on both sides of the inlet and outlet. At the same time, the rotation of the rotating shaft 6 also drives the pipe wall scraper 10 to rotate. The pipe wall scraper 10 can scrape the materials on the inner wall of the exhaust gas conveying pipe 1. The materials scraped by the filter scraper 9 and the pipe wall scraper 10 pass through the mesh plate 12 and fall into the screening frame 15.

[0038] In addition, the rotation of the rotating shaft 6 will also drive the eccentric wheel 1 22 and the eccentric wheel 2 23 to rotate together, so that the eccentric wheel 1 22 and the eccentric wheel 2 23 alternately press the push rod 19. When the push rod 19 is pressed, the spring 21 is compressed and shrinks, and the length becomes shorter, and the push rod 19 moves downward. The downward movement of the push rod 19 will press one side of the screening frame 15, and the pressed side of the screening frame 15 will rotate downward, and the non-pressed side will rotate upward. Alternatingly pressing the screening frame 15 will cause the screening frame 15 to swing up and down. The up and down swinging of the screening frame 15 can realize the screening of the materials falling into the frame body 151, thereby distinguishing materials of different sizes, such as color aluminum pigment powder and plastic blocks, and the color aluminum pigment powder can also be better recovered.

[0039] Preferably, the screening frame 15 includes a frame body 151 and a screening mesh door 152 hinged to the bottom of the frame body 151 , and the material falling to the bottom of the frame body 151 can be taken out by opening the screening mesh door 152 .

[0040] Preferably, a sealing door 24 is hinged at the bottom of the collection box 13 , and the materials falling to the bottom of the collection box 13 can be taken out by opening the sealing door 24 .

[0041] It should be noted that in this embodiment, when taking out the material that has fallen to the bottom of the frame 151 , it is necessary to first open the sealing door 24 to take out the material that has fallen to the bottom of the collection box 13 , and then open the screening mesh door 152 to take out the material that has fallen to the bottom of the frame 151 .

[0042] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. An exhaust gas collection and purification system for a color aluminum pigment production workshop, characterized in that: The invention comprises an exhaust gas conveying pipeline (1), a plate-type activated carbon filter (3), a negative pressure fan (4) and a plurality of exhaust gas absorption covers (2) arranged on the exhaust gas conveying pipeline (1), which are connected in sequence; a cleaning component and a collecting and screening component for collecting and screening materials scraped by the cleaning component are also arranged on the exhaust gas conveying pipeline (1) in front of the air inlet of the plate-type activated carbon filter (3); The cleaning component comprises two support plates (5) symmetrically arranged in the waste gas conveying pipe (1), a rotating shaft (6) rotatably connected between the two support plates (5), a filter screen (7) arranged on the rotating shaft (6), a support seat (8) arranged on the inner wall of the waste gas conveying pipe (1), a plurality of filter screen scrapers (9) arranged on the inner wall of the waste gas conveying pipe (1) and in contact with the inlet and outlet side walls of the filter screen (7), and a plurality of pipe wall scrapers (10) arranged on the rotating shaft (6) and located on the inlet and outlet sides of the filter screen (7); the filter screen (7) and the support seat (8) are rotatably connected via a bearing.

2. The exhaust gas collection and purification system for a color aluminum pigment production workshop according to claim 1 is characterized in that: The bottom of the waste gas conveying pipe (1) is provided with a discharge port and a mesh plate (12) below the filter scraper (9) and the pipe wall scraper (10).

3. The exhaust gas collection and purification system for a color aluminum pigment production workshop according to claim 2 is characterized in that: The cleaning assembly comprises a collecting box (13) arranged at the bottom of the waste gas conveying pipe (1) and below the mesh plate (12), and a screening frame (15) rotatably connected to the inside of the collecting box (13); both sides of the collecting box (13) are provided with moving grooves (14) for the screening frame (15) to rotate; Alternating pressing pieces are provided above both sides of the screening frame (15), and resetting sliding pieces are provided below both sides of the screening frame (15).

4. The exhaust gas collection and purification system for a color aluminum pigment production workshop according to claim 3 is characterized in that: The alternating pressing member comprises two push rods (19) symmetrically arranged and connected to the bottom of the exhaust gas conveying pipe (1) in an upward and downward sliding manner, the top and lower sections of the push rods (19) are both provided with a transverse plate (20), a second spring (21) is provided between the bottom of the exhaust gas conveying pipe (1) and the transverse plate (20) located above, and the transverse plate (20) located below is located at the bottom of the exhaust gas conveying pipe (1) and extends to the inside of the movable groove (14); The alternating pressing member also includes an eccentric wheel 1 (22) and an eccentric wheel 2 (23) arranged on the rotating shaft (6); the eccentric wheel 1 (22) and the eccentric wheel 2 (23) are respectively located above the two push rods (19) and are used to press the push rods (19) to move downward.

5. The exhaust gas collection and purification system for a color aluminum pigment production workshop according to claim 3 is characterized by: The reset sliding member comprises four sliding blocks (16) respectively arranged on the front and rear side walls and the left and right side walls of the screening frame (15), and a sliding limit frame (17) arranged inside the collecting box (13) and corresponding to the sliding blocks (16) one by one, the sliding blocks (16) and the sliding limit frame (17) being slidably connected, and a spring (18) is arranged between the bottom of the sliding block (16) and the inner bottom of the sliding limit frame (17).

6. The exhaust gas collection and purification system for a color aluminum pigment production workshop according to claim 4 is characterized in that: The protrusion positions of the eccentric wheel 1 (22) and the eccentric wheel 2 (23) are staggered with each other.

7. The exhaust gas collection and purification system for a color aluminum pigment production workshop according to claim 3 is characterized by: The screening frame (15) comprises a frame body (151) and a screening mesh door (152) hinged to the bottom of the frame body (151).

8. The exhaust gas collection and purification system for a color aluminum pigment production workshop according to claim 3 is characterized by: A sealing door (24) is hinged at the bottom of the collection box (13).

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