Concrete negative pressure dust collection device

Abstract

The utility model provides a concrete negative-pressure dust collecting device which comprises a box body, supporting seats are welded to the bottom of the box body, a fixing seat is movably installed between the supporting seats, a pushing mechanism is fixed to the fixing seat and installed in the box body, a fixing barrel is fixedly installed at the top of the box body, and the fixing barrel is fixed to the bottom of the box body. A collecting barrel is movably installed in the fixed barrel, a supporting plate is fixed to the inner wall of the fixed barrel, and the supporting plate is movably installed in the collecting barrel. According to the concrete negative-pressure dust collecting device, after dust accumulation of the collecting barrel is finished, the box body moves upwards, the collecting barrel rotates in the fixed barrel after the box body moves upwards, the inner wall of the collecting barrel rotates to make contact with a sealing plate, the inner wall of the collecting barrel is scratched and cleaned, and centralized discharging of dust in the later period is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of negative pressure dust collection equipment, specifically a concrete negative pressure dust collection device. Background Technology

[0002] Concrete plants generate a large amount of harmful dust during concrete production and during the transportation of concrete raw materials. This is not only detrimental to the health of workers, but also to the environment.

[0003] According to the patent document CN216170723U, a negative pressure dust collection system for intermediate silos in concrete plants includes an intermediate silo, a dust collector, and an air balance pipe. The dust collector is located at the top of the intermediate silo, and the air balance pipe is located inside the intermediate silo. The dust collector draws in air to generate negative pressure, and the air balance pipe exhausts air into the intermediate silo. The intermediate silo has an inlet with a baffle. This technical solution, in use, creates a negative pressure environment in the intermediate silo through the dust collector to collect dust, preventing dust overflow. Simultaneously, the air balance pipe ensures airflow circulation in the intermediate silo, improving dust collection efficiency and significantly reducing the dust content in the intermediate silo. This is beneficial for a cleaner production environment and meets environmental protection requirements. However, while this solution achieves environmental cleanliness, it is inconvenient to clean the inner wall of the dust collection mechanism after dust collection, as this is not possible during use. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a concrete negative pressure dust collection device to solve the problems mentioned in the background. This utility model has a novel structure. After the dust collection cylinder finishes accumulating, the box moves upward. After the box moves upward, the collection cylinder rotates inside the fixed barrel. The rotation of the collection cylinder causes the inner wall to come into contact with the sealing plate, which scrapes and cleans the inner wall of the collection cylinder, facilitating the concentrated discharge of dust in the later stage.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a concrete negative pressure dust collection device, comprising a box body, a support base welded to the bottom of the box body, a fixed base movably installed between the support bases, a pushing mechanism fixed on the fixed base, the pushing mechanism being installed inside the box body, a fixed bucket fixedly installed on the top of the box body, a collection cylinder movably installed inside the fixed bucket, a support plate fixed on the inner wall of the fixed bucket, and the support plate movably installed inside the collection cylinder.

[0006] Furthermore, a fixing column is welded to the side of the box, a motor box is fixedly installed at one end of the fixing column, an exhaust fan is fixedly installed inside the motor box, and an exhaust pipe is fixedly installed between the motor box and the fixing barrel.

[0007] Furthermore, a filter assembly is fixedly installed on the support plate, and a lifting mechanism is fixedly installed on the fixed barrel, with movable columns installed on each lifting mechanism.

[0008] Furthermore, a movable plate and a scraper are fixed to one end of the movable column, and the movable plate and the scraper are distributed opposite to each other on both sides of the support plate.

[0009] Furthermore, the scraper has an opening, and a fan-shaped plate is welded to one side of the scraper, the fan-shaped plate being in contact with the inner wall of the collecting cylinder.

[0010] Furthermore, a sealing plate is fixed to the side of the support plate, the sealing plate is in contact with the inner wall of the collecting cylinder, and an air inlet pipe is fixedly installed between the fixed barrel and the box body.

[0011] The beneficial effects of this utility model are:

[0012] 1. This concrete negative pressure dust collection device, after the dust collection cylinder finishes accumulating, the box body moves upward. After the box body moves upward, the collection cylinder rotates inside the fixed barrel. The rotation of the collection cylinder causes the inner wall to come into contact with the sealing plate, which scrapes and cleans the inner wall of the collection cylinder, facilitating the concentrated discharge of dust in the later stage.

[0013] 2. In this concrete negative pressure dust collection device, the lifting mechanism pushes the movable plate downward, and the movable plate controls the width and position of the air outlet of the filter component, so that the dust is filtered through the filter component at different positions in a gradual manner, ensuring the longest possible service life of the filter component.

[0014] 3. In this concrete negative pressure dust collection device, the scraper moves downward to scrape the surface of the filter component. While scraping and cleaning, the arc plate seals and blocks the dust at the bottom of the collection cylinder, thereby preventing the dust at the bottom from rolling again under the influence of the airflow. The gas continues to be filtered and used through the filter component through the opening. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a concrete negative pressure dust collection device according to the present invention;

[0016] Figure 2 This is a structural schematic diagram of the side cross-section of the housing of a concrete negative pressure dust collection device according to this utility model;

[0017] Figure 3 This is a top view cross-sectional structural diagram of the collection cylinder of a concrete negative pressure dust collection device according to the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of the concrete negative pressure dust collection device after the box body is raised.

[0019] In the diagram: 1. Box body; 2. Support base; 3. Fixed base; 4. Pushing mechanism; 5. Fixed column; 6. Exhaust pipe; 7. Motor box; 8. Fixed barrel; 9. Lifting mechanism; 10. Collection cylinder; 11. Support plate; 12. Filter assembly; 13. Movable plate; 14. Scraper; 15. Fan-shaped plate; 16. Opening; 17. Air inlet pipe; 18. Sealing plate. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] Please see Figures 1 to 4 This utility model provides a technical solution: a concrete negative pressure dust collection device, including a box body 1, a support base 2 welded to the bottom of the box body 1, a fixed base 3 movably installed between the support bases 2, a pushing mechanism 4 fixed on the fixed base 3, the pushing mechanism 4 installed inside the box body 1, a fixed bucket 8 fixedly installed on the top of the box body 1, a collection cylinder 10 movably installed inside the fixed bucket 8, a support plate 11 fixed on the inner wall of the fixed bucket 8, the support plate 11 movably installed inside the collection cylinder 10, a fixed column 5 welded to the side of the box body 1, a motor box 7 fixedly installed at one end of the fixed column 5, an exhaust fan fixedly installed inside the motor box 7, and an exhaust pipe 6 fixedly installed between the motor box 7 and the fixed bucket 8. The pushing mechanism 4 and the lifting mechanism 9 are both linear reciprocating electric push rods. The pushing mechanism 4 pushes the fixed base 3 to move downward, and the box body 1 generates a reaction force to move upward. After the box body 1 moves upward, it is convenient to remove the collection cylinder 10 later.

[0022] In this embodiment, a filter assembly 12 is fixedly installed on the support plate 11, and a lifting mechanism 9 is fixedly installed on the fixed barrel 8. Each lifting mechanism 9 is equipped with a movable column, and a movable plate 13 and a scraper 14 are fixed to one end of each movable column. The movable plate 13 and the scraper 14 are distributed opposite to each other on both sides of the support plate 11. An opening 16 is opened on the scraper 14, and a fan-shaped plate 15 is welded to one side of the scraper 14. The fan-shaped plate 15 is in contact with the inner wall of the collection barrel 10. A sealing plate 18 is fixed to the side of the support plate 11, and the sealing plate 18 is in contact with the inner wall of the collection barrel 10. An air inlet pipe 17 is fixedly installed between the fixed barrel 8 and the box body 1. The filter assembly 12 is a filter plate, which filters and adsorbs dust to reduce the flow of dust in the air.

[0023] When in use, the air inlet pipe 17 is oriented towards the space where dust collection is required. The exhaust fan inside the motor housing 7 starts, generating suction. This suction enters the housing 1 through the exhaust pipe 6, creating negative pressure at the air inlet pipe 17. This negative pressure draws dust from the air into the fixed container 8. Before filtration, the lifting mechanism 9 is activated, pushing the movable plate 13 downwards. This downward movement opens the bottom of the filter assembly 12 to a certain width, allowing air to pass through it first. As filtration progresses, if a section of the bottom filter assembly 12 becomes clogged, the movable plate 13 moves upwards, gradually opening the filter assembly 12. The movable plate 13 controls the opening distance of the filter assembly 12, allowing for a longer opening. During the filtration process, after the filter assembly 12 is completely clogged, the lifting mechanism 9 is activated to push the scraper 14 downwards. The scraper 14 scrapes and cleans the surface of the filter assembly 12. After cleaning, the fan-shaped plate 15 and the scraper 14 work together to push the dust to the bottom of the collection cylinder 10. External air passes through the filter assembly 12 again through the opening 16 for filtration. After dust collection is completed, the pushing mechanism 4 is activated to move the fixed seat 3 downwards and the box 1 upwards. The collection cylinder 10 is exposed from the bottom of the box 1. After the collection cylinder 10 is exposed, it rotates, and the inner wall of the collection cylinder 10 contacts the sealing plate 18 for scraping and cleaning. After cleaning, the collection cylinder 10 is removed and the dust inside is cleaned in a concentrated manner, which is beneficial to environmental protection.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A concrete negative pressure dust collection device, comprising a housing (1), characterized in that: The bottom of the box (1) is welded with a support base (2), and a fixed base (3) is movably installed between the support bases (2). A pushing mechanism (4) is fixed on the fixed base (3). The pushing mechanism (4) is installed inside the box (1). A fixed bucket (8) is fixedly installed on the top of the box (1). A collection tube (10) is movably installed inside the fixed bucket (8). A support plate (11) is fixed on the inner wall of the fixed bucket (8). The support plate (11) is movably installed inside the collection tube (10).

2. The concrete negative pressure dust collection device according to claim 1, characterized in that: The side of the box (1) is welded with a fixing column (5), and a motor box (7) is fixedly installed at one end of the fixing column (5). An exhaust fan is fixedly installed inside the motor box (7), and an exhaust pipe (6) is fixedly installed between the motor box (7) and the fixing barrel (8).

3. The concrete negative pressure dust collection device according to claim 1, characterized in that: A filter assembly (12) is fixedly installed on the support plate (11), and a lifting mechanism (9) is fixedly installed on the fixed bucket (8). Each lifting mechanism (9) is equipped with a movable column.

4. The concrete negative pressure dust collection device according to claim 3, characterized in that: One end of the movable column is fixed with a movable plate (13) and a scraper (14), which are distributed opposite to each other on both sides of the support plate (11).

5. A concrete negative pressure dust collection device according to claim 4, characterized in that: The scraper (14) has an opening (16), and a fan-shaped plate (15) is welded to one side of the scraper (14). The fan-shaped plate (15) is in contact with the inner wall of the collecting cylinder (10).

6. A concrete negative pressure dust collection device according to claim 1, characterized in that: A sealing plate (18) is fixed to the side of the support plate (11), the sealing plate (18) is in contact with the inner wall of the collection cylinder (10), and an air inlet pipe (17) is fixedly installed between the fixed barrel (8) and the box body (1).

Images