Dust recovery device for concrete mixing

Abstract

The utility model provides a dust recovery device for concrete mixing, which comprises an outer shell, a mixing tank is arranged above the outer shell, a mixing fan blade is arranged in the mixing tank, an arc-shaped wall scraping groove is arranged at one end of the mixing fan blade close to the side wall of the mixing tank, one side of the mixing tank is provided with an air blowing structure arranged in the outer shell, and the air blowing structure is arranged in the outer shell. The air blowing structure comprises a negative pressure structure which is arranged in the outer shell and communicated with the stirring tank, an air exhaust structure penetrating through a bottom plate of the stirring tank is arranged on one side of the negative pressure structure, stirring fan blades with wall scraping grooves are arranged in the stirring tank, the stirring fan blades are tightly attached to the inner wall of the stirring tank, and the inner wall of the stirring tank is effectively prevented from being adhered by means of the wall scraping grooves; meanwhile, dust is sucked away by means of negative-pressure airflow by means of a negative-pressure structure of the air blowing structure, and the air exhausting structure blows air upwards from the bottom end of the stirring tank to disturb the airflow in the stirring tank, so that the dust flies and forms an airflow channel in cooperation with the negative-pressure structure.

Description

Technical Field

[0001] The utility model provides a dust recovery device, belonging to the technical field of concrete mixing, and particularly relates to a dust recovery device for concrete mixing. Background Technique

[0002] Concrete is an artificial stone building material formed by mixing coarse aggregates (such as crushed stones or bricks), fine aggregates (such as sand), cement (mainly Portland cement) and water, and then through stirring, pouring, shaping and curing. Appropriate additives and admixtures can be added as needed to improve its workability or durability and other characteristics. Concrete is widely used in the construction of building projects, bridges, roads, dams, etc. Because of its good compressive strength and durability, it has become one of the most important basic building materials in modern society.

[0003] When concrete is being stirred, due to the uneven initial mixing and stirring, dust will be generated. The recovery of dust can reduce environmental pollution, save resources and improve the safety of the workplace. After the existing mixing devices are used, due to the stirring reason, a lot of dust adheres to the side walls of the mixing devices and cannot be effectively recovered. Long-term accumulation will produce solid impurities adhering to the side walls of the mixing devices, affecting normal use. Content of the Utility Model

[0004] In order to make up for the deficiencies of the prior art, the embodiments of the present application provide a dust recovery device for concrete mixing, which solves the problem that the existing dust recovery device has low recovery efficiency for dust particles adhering to the side walls of the mixing device.

[0005] To solve the above technical problems, the utility model provides the following technical solutions: A dust recovery device for concrete mixing, including an outer shell. Above the outer shell is provided a mixing tank, inside the mixing tank is provided a mixing fan blade. One end of the mixing fan blade close to the side wall of the mixing tank is provided with an arc-shaped scraping groove. One side of the mixing tank is provided with a blowing structure placed inside the outer shell. The blowing structure includes a negative pressure structure placed inside the outer shell and communicated with the mixing tank. One side of the negative pressure structure is provided with an exhaust structure penetrating through the bottom plate of the mixing tank.

[0006] Preferably: The blowing structure includes a blower placed inside the outer shell. One side of the blower close to the mixing tank is provided with a first air hole and a second air hole. Below the blower is provided a fixing plate fixedly connected to the inner wall of the outer shell.

[0007] Preferably: The first air hole and the second air hole are respectively communicated with the negative pressure structure and the exhaust structure through connecting pipes. The negative pressure structure includes a collection tank placed on one side of the mixing tank.

[0008] Preferably, a conical gearbox is connected above the collection tank through a vertical connecting pipe. A horizontal connecting pipe that penetrates itself and the mixing tank is provided on one side of the connecting pipe close to the mixing tank. A connection box that communicates with the corresponding connecting pipe is connected above the gearbox.

[0009] Preferably, the exhaust structure includes a screen placed at the bottom of the mixing tank, and a baffle corresponding to itself that penetrates the mixing tank is provided on one side of the screen.

[0010] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0011] In the present utility model, a mixing fan blade with scraping grooves is arranged inside the mixing tank. The mixing fan blade is closely attached to the inner wall of the mixing tank. By means of the scraping grooves, it effectively prevents sticking to the inner wall of the mixing tank itself. At the same time, with the negative pressure structure of the air blowing structure, the dust is sucked away by the negative pressure air flow. At the same time, the exhaust structure blows air upward from the bottom end of the mixing tank, disturbing the air flow in the mixing tank, causing the dust to fly and cooperating with the negative pressure structure to form an air flow channel.

[0012] Other advantages, objectives, and features of the present utility model will be described to some extent in the subsequent description, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional schematic diagram of a dust recovery device for concrete mixing according to the present utility model;

[0014] Figure 2 is a three-dimensional schematic diagram of the air blowing structure of a dust recovery device for concrete mixing according to the present utility model;

[0015] Figure 3 is a cross-sectional view of a dust recovery device for concrete mixing according to the present utility model;

[0016] Figure 4 is a partial enlarged view of a dust recovery device for concrete mixing according to the present utility model.

[0017] As shown in the figure:

[0018] 1. Outer housing;

[0019] 11. Mixing tank; 12. Mixing fan blade; 13. Scraping groove;

[0020] 2. Air blowing structure;

[0021] 21. Negative pressure structure; 22. Exhaust structure; 23. Blower; 24. First air hole; 25. Second air hole; 26. Fixed plate; 27. Connecting pipe; 28. Collection tank;

[0022] 211, vertical connecting pipe; 212, gearbox; 213, horizontal connecting pipe; 214, connection box;

[0023] 221, sieve; 222, baffle. Detailed implementation manner

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] It should be noted that the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs; the terms used in the description of the present invention herein are only for the purpose of describing specific implementation manners and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0027] As Figure 1 and Figure 2 shown, a dust recovery device for concrete mixing includes a housing 1, a mixing tank 11 is provided above the housing 1, a mixing fan blade 12 is provided inside the mixing tank 11, an arc-shaped scraping groove 13 is provided at one end of the mixing fan blade 12 close to the side wall of the mixing tank 11, a blowing structure 2 is provided on one side of the mixing tank 11 and placed inside the housing 1, the blowing structure 2 includes a negative pressure structure 21 communicated with the mixing tank 11 and placed inside the housing 1, an exhaust structure 22 penetrating through the bottom plate of the mixing tank 11 is provided on one side of the negative pressure structure 21, the blowing structure 2 includes a blower 23 placed inside the housing 1, a first air hole 24 and a second air hole 25 are provided on one side of the blower 23 close to the mixing tank 11, and a fixing plate 26 fixedly connected to the inner wall of the housing 1 is provided below the blower 23.

[0028] In this implementation scheme, by arranging the stirring fan blade 12 with a scraping groove 13 inside the stirring tank 11, the stirring fan blade 12 is closely attached to the inner wall of the stirring tank 11. With the help of the scraping groove 13, it effectively prevents sticking to the inner wall of the stirring tank 11 itself. At the same time, with the help of the negative pressure structure 21 of the air blowing structure 2, the dust is sucked away by the negative pressure air flow. At the same time, the exhaust structure 22 blows air upward from the bottom of the stirring tank 11, disturbing the air flow in the stirring tank 11, making the dust fly and cooperating with the negative pressure structure 21 to form an air flow channel.

[0029] As Figure 3 and Figure 4 shown, the first air hole 24 and the second air hole 25 are respectively communicated with the negative pressure structure 21 and the exhaust structure 22 through the connecting pipe 27. The negative pressure structure 21 includes a collection tank 28 arranged on one side of the stirring tank 11. Above the collection tank 28, a conical gearbox 212 is connected through a vertical connecting pipe 211. On the side of the connecting pipe 211 close to the stirring tank 11, a horizontal connecting pipe 213 passing through itself and the stirring tank 11 is provided. Above the gearbox 212, a connection box 214 communicated with the corresponding connecting pipe 27 is connected. The exhaust structure 22 includes a screen 221 arranged at the bottom of the stirring tank 11. On one side of the screen 221, a baffle 222 passing through the stirring tank 11 and corresponding to itself is provided.

[0030] In this implementation scheme, after the blower 23 blows air into the connection box 214 through the connecting pipe 27, the air flow passes through the conical gearbox 212, and the cross-sectional area of the air flow decreases, so the wind speed increases, and then the pressure decreases, forming a negative pressure environment in the vertical connecting pipe 211, thereby sucking the dust inside the collection tank 28 into the collection tank 28; the baffle 222 is inserted and can block the screen holes on the screen 221. After being removed, the exhaust structure 22 blows air inward.

[0031] During use, before starting the stirring, ensure that the mixing tank 11 has been filled with the concrete raw materials to be stirred. The stirring blades 12 should be correctly installed in the mixing tank 11, and ensure that the scraping grooves 13 are closely attached to the inner wall of the mixing tank to effectively prevent the raw materials from adhering to the inner wall of the tank during the stirring process; start the stirring equipment to make the stirring blades 12 start to rotate, and at the same time turn on the blower 23. In this way, air is blown into the interior of the mixing tank 11 through the first air holes 24 and the second air holes 25, thereby generating a negative pressure environment and disturbing the air flow in the mixing tank to prevent dust deposition; during the stirring process, the negative pressure structure 21 sucks away the dust generated during the stirring through the negative pressure environment generated by the blower 23. The sucked dust is transmitted to the collection tank 28 through the connecting pipe 27. Through the action of the gearbox 212, the dust is effectively sucked into the collection tank in the vertical connecting pipe 211, realizing the recovery of dust; the air of the blower 23 adjusts the air flow of the whole system through the connecting box 214 and the connecting pipe 27. The baffle 222 can be put in or taken out as needed to control the air flow on the screen 221 to ensure the effective circulation of the air flow in the system; after the stirring is completed, turn off the stirring and blowing structures, take out the baffle 222 (if it was put in before), check whether the screen 221 is blocked, and ensure that the exhaust structure 22 is unobstructed. Finally, take out the recovered dust from the collection tank 28. The recovered dust can be processed or reused according to specific circumstances. Through the above steps, the dust recovery device for concrete mixing of the present utility model can not only effectively mix the concrete, but also effectively recover the dust during the mixing process, thereby reducing environmental pollution, improving work efficiency and the hygiene of the workplace.

[0032] Although the present utility model has been disclosed above with preferred embodiments, it is not intended to limit the present utility model. Anyone familiar with this technology can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model should be defined by the claims.

Claims

1. A dust recovery device for concrete mixing, comprising a housing (1), characterized in that: Above the said outer shell (1), there is a stirring tank (11). Inside the stirring tank (11), there are stirring fan blades (12). At one end of the stirring fan blades (12) close to the side wall of the stirring tank (11), there is an arc-shaped scraping groove (13). On one side of the stirring tank (11), there is a blowing structure (2) placed inside the outer shell (1). The blowing structure (2) includes a negative pressure structure (21) placed inside the outer shell (1) and communicating with the stirring tank (11). On one side of the negative pressure structure (21), there is an exhaust structure (22) penetrating through the bottom plate of the stirring tank (11).

2. The dust recovery device for concrete mixing according to claim 1, characterized in that: The said blowing structure (2) includes a blower (23) placed inside the outer shell (1). On one side of the blower (23) close to the stirring tank (11), there are a first air hole (24) and a second air hole (25). Below the blower (23), there is a fixing plate (26) fixedly connected to the inner wall of the outer shell (1).

3. The dust recovery device for concrete mixing according to claim 2, characterized in that: The said first air hole (24) and second air hole (25) are respectively communicated with the negative pressure structure (21) and the exhaust structure (22) through connecting pipes (27). The negative pressure structure (21) includes a collection tank (28) placed on one side of the stirring tank (11).

4. A dust recovery device for concrete mixing according to claim 3, characterized in that: Above the said collection tank (28), there is a conical gearbox (212) connected through a vertical connecting pipe (211). On one side of the connecting pipe (211) close to the stirring tank (11), there is a horizontal connecting pipe (213) penetrating through itself and the stirring tank (11). Above the gearbox (212), there is a connecting box (214) communicated with the corresponding connecting pipe (27).

5. The dust recovery device for concrete mixing according to claim 3, characterized in that: The said exhaust structure (22) includes a screen (221) placed at the bottom of the stirring tank (11). On one side of the screen (221), there is a blocking plate (222) penetrating through the stirring tank (11) and corresponding to itself.

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