Dust fall type concrete raw material screening machine
By designing the centrifugal screening mechanism, the structure of the inverted conical filter cover and collection cover is used to throw out the concrete dry powder by centrifugal force, the dust problem caused by excessive particles in concrete processing is solved, and the dry powder is refined and dust-free. sieving effect.
Patent Information
- Application Number
- CN202420675410.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-04-03
AI Technical Summary
During concrete processing, the grinding dry powder particles are large, and oscillation methods are often used when screening, which can easily lead to large particles flying randomly, causing dust problems.
A dust-reducing concrete raw material screening machine is designed, and a centrifugal screening mechanism is used, including an inverted conical filter cover and collection cover. The dry powder is thrown out by centrifugal force and discharged through the filter mesh hole to ensure that the barrel is nearly semi-enclosed and avoid dust.
It effectively reduces the dust in the concrete dry powder, and achieves the fineness of particles through multiple filtration and screening, and ensures the collection and storage of powder.
Smart Images
Figure CN222343360U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of concrete processing, in particular to a dust reduction type concrete raw material screening machine. Background Art
[0002] Concrete, also known as "concrete," is a general term for engineering composite materials composed of aggregates bonded together by a cementitious material. Concrete, commonly referred to as cement as the binder, sand and stone as aggregates, and water (which may contain admixtures and additives) mixed in a specific proportion, is widely used in civil engineering. Cement concrete, also known as ordinary concrete, is widely used in civil engineering.
[0003] Concrete is one of the most important civil engineering materials today. It is an artificial stone material made by mixing cementitious materials, granular aggregate (also known as aggregate), water, and, if necessary, admixtures and additives in a certain proportion. It is then uniformly mixed, compacted into a dense shape, and cured to harden.
[0004] However, during concrete processing, the dry powder of concrete needs to be ground. The ground dry powder has large particles and needs to be screened. The commonly used screening method is to achieve it by vibration, which can easily cause large particles of dry powder to fly around after vibration. In view of this, a dust reduction type concrete raw material screening machine is developed. Utility Model Content
[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A dust reduction type concrete raw material screening machine includes a barrel body, wherein a centrifugal screening mechanism is provided inside the barrel body;
[0006] The centrifugal screening mechanism includes: a filter cover, a collection cover, a screening barrel, a limit drive part and a drop port;
[0007] The filter cover is arranged on the inner top of the barrel body, the collecting cover is arranged inside the barrel body, the screening barrel is arranged inside the barrel body, the limiting drive part is arranged on the inner bottom of the barrel body, and the drop port is opened on the inner bottom surface of the barrel body. The collecting cover and the filter cover are both inverted conical structures, the filter cover is provided with mesh holes, and the bottom of the collecting cover is provided with a discharge port.
[0008] Preferably, the limiting driving part includes: an output motor, a limiting cylindrical ring and a clamping ring;
[0009] The output motor is vertically arranged at the bottom of the barrel body, the limiting cylindrical ring is arranged on the bottom surface of the barrel body, the retaining ring is arranged on the bottom surface of the screening barrel, the retaining ring is embedded in the limiting cylindrical ring, and the output end of the output motor is fixedly connected to the screening barrel.
[0010] Preferably, the side wall of the screening barrel is provided with a filter mesh hole, and the aperture of the filter mesh hole is smaller than the mesh diameter of the filter cover.
[0011] Preferably, the barrel body is formed by splicing and assembling two semicircular structures.
[0012] Preferably, the lower end surface of the barrel body is provided with a supporting foot, and the supporting foot is located in the gap between the plurality of the blanking openings.
[0013] Preferably, there are a plurality of the drop openings, and the plurality of drop openings are arranged in a circular shape at the bottom of the barrel body.
[0014] Beneficial effects
[0015] The utility model provides a dust reduction type concrete raw material screening machine, which has the following beneficial effects: qualified concrete dry powder particles are thrown out of the screening barrel by centrifugal force and discharged from the drop port, and the interior of the barrel is almost in a semi-closed state, ensuring that no dust of the concrete dry powder is generated. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a structural schematic diagram of a dust reduction type concrete raw material screening machine described in the present utility model.
[0017] Figure 2 This is a cross-sectional view of a dust reduction type concrete raw material screening machine described in the present utility model.
[0018] Figure 3 This is a cross-sectional view of the barrel of a dust reduction type concrete raw material screening machine described in the present utility model.
[0019] In the figure: 1. Barrel body; 2. Filter cover; 3. Collection cover; 4. Screening barrel; 5. Dropping port; 6. Discharge port; 7. Output motor; 8. Limiting cylindrical ring; 9. Positioning ring; 10. Filter mesh; 11. Support foot. DETAILED DESCRIPTION
[0020] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.
[0021] Example: See Figure 1-3In order to achieve a nearly semi-closed state inside the barrel body 1, ensure that no dust of the dry concrete powder is generated, and filter and screen the dry concrete powder multiple times, the specific working principle is as follows: the filter cover 2 above the barrel body 1 performs the first filtration, and the dry concrete powder is poured into the barrel body 1, passes through the filter cover 2 and falls into the collection cover 3, and enters the screening barrel 4 through the discharge port 6 on the collection cover 3. After the output motor 7 is connected to the mains, the start and stop are controlled by the switch to drive the screening barrel 4 to rotate. During the rotation of the screening barrel 4, the locking ring 9 and the limiting cylindrical ring 8 are embedded and constrained, making the rotation of the screening barrel 4 more stable. Driven by centrifugal force, the dry powder is thrown out from the filter mesh 10, and the dry powder is centrifugally crushed, making the dry powder finer. The dry powder finally falls from the drop port 5 into a pre-placed collection box for storage.
[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A dust-reducing concrete raw material screening machine, comprising a barrel (1), characterized in that: A centrifugal screening mechanism is arranged inside the barrel (1); The centrifugal screening mechanism comprises: a filter cover (2), a collection cover (3), a screening barrel (4), a limit drive unit and a material drop port (5); The filter cover (2) is arranged at the inner top of the barrel body (1), the collection cover (3) is arranged inside the barrel body (1), the screening barrel (4) is arranged inside the barrel body (1), the limit drive part is arranged at the inner bottom of the barrel body (1), the drop opening (5) is opened on the inner bottom surface of the barrel body (1), the collection cover (3) and the filter cover (2) are both inverted conical structures, the filter cover (2) is provided with mesh holes, and the bottom of the collection cover (3) is provided with a discharge opening (6).
2. A dust reduction type concrete raw material screening machine according to claim 1, characterized in that: The position limiting driving part comprises: an output motor (7), a position limiting cylindrical ring (8) and a locking ring (9); The output motor (7) is vertically arranged at the bottom of the barrel body (1), the limiting cylindrical ring (8) is arranged on the bottom surface of the barrel body (1), the retaining ring (9) is arranged on the bottom surface of the screening barrel (4), the retaining ring (9) is embedded in the limiting cylindrical ring (8), and the output end of the output motor (7) is fixedly connected to the screening barrel (4).
3. A dust reduction type concrete raw material screening machine according to claim 1, characterized in that: The side wall of the screening barrel (4) is provided with a filter mesh (10), and the aperture of the filter mesh (10) is smaller than the mesh diameter of the filter cover (2).
4. The dust reduction type concrete raw material screening machine according to claim 1, characterized in that: The barrel body (1) is formed by splicing and assembling two semicircular structures.
5. The dust reduction type concrete raw material screening machine according to claim 1, characterized in that: The lower end surface of the barrel body (1) is provided with a supporting foot (11), and the supporting foot (11) is located in the gap between the plurality of material dropping openings.
6. The dust reduction type concrete raw material screening machine according to claim 1, characterized in that: The number of the material drop openings is multiple, and the multiple material drop openings are arranged in a circular shape at the bottom of the barrel body (1).