Sieving device for feeding bin of mixing station

Abstract

The utility model discloses a mixing station feed bin sieving device which comprises a machine frame, a sieving mechanism, a rolling wheel set, a first sieving plate, a first material guide plate, a second sieving plate and an air cylinder, the sieving mechanism, the rolling wheel set, the first sieving plate, the first material guide plate, the second sieving plate and the air cylinder are arranged on the machine frame, the sieving mechanism comprises a box body, a feed port is formed in the top of the box body, and an inverted-V-shaped second material guide plate is arranged at the bottom of the box body. A first discharge hole and a second discharge hole are respectively formed in the bottom of the box body at the two ends of the second guide plate; the roller group is arranged in the box body below the feeding hole; the first sieve plate is obliquely arranged below the roller group, the first guide plate is obliquely arranged below the roller group, and the first guide plate and the first sieve plate form a V-shaped structure with an upward opening; the second sieve plate is hinged to the lower end of the first sieve plate; one end of the cylinder is hinged to the first guide plate, and the other end is hinged to the free end of the second sieve plate; the screening device for the feeding bin of the mixing station can conveniently smash and screen materials, and is beneficial to improving the mixing quality of the mixed materials.

Description

Technical Field

[0001] The utility model relates to the field of mixing equipment, in particular to a screening device for a feeding bin of a mixing station. Background Art

[0002] A water-stabilizing material mixing station is a large-scale machine specially used for mixing water-stabilizing materials in industrial construction. Water-stabilizing materials are generally composed of a mixture of cement, fly ash, crushed stone, stabilized soil and other materials.

[0003] In the existing mixing station feed bin, various materials enter the mixing bin directly through the conveying mechanism, and there is a lack of pre-screening structure. Therefore, it is difficult to clean the large particles in the mixed materials, which easily affects the mixing quality of the crushed stone particles and the remaining materials. Therefore, it is necessary to make improvements. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a screening device for a feed bin of a mixing station.

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

[0006] A mixing station feed bin screening device, comprising a frame and:

[0007] The screening mechanism comprises a box body, wherein the top of the box body is provided with a feed inlet and the bottom of the box body is provided with a second material guide plate in an inverted V shape, and the bottom of the box body at both ends of the second material guide plate is also provided with a first material outlet and a second material outlet respectively;

[0008] A roller group is arranged inside the box below the feed port and is used to crush the material;

[0009] A first screen plate is obliquely disposed below the roller assembly to screen the crushed material;

[0010] A first material guide plate, which is obliquely disposed below the roller assembly and forms a V-shaped structure with the first screen plate opening upward;

[0011] a second screen plate, hinged to a lower end of the first screen plate;

[0012] A cylinder, one end of which is hinged on the first guide plate and the other end of which is hinged to the free end of the second screen plate, so that the free end of the second screen plate is closed at the lower end of the first guide plate or rests on the top end of the second guide plate through the extension and contraction of the cylinder.

[0013] Furthermore, the first screen plate is supported inside the box body by a plurality of elastic support members, and a cam assembly is also provided inside the box body for vibrating the first screen plate.

[0014] Furthermore, the roller group includes two groups of rollers with opposite rotation directions.

[0015] Furthermore, a lower end of the first material guide plate is located directly above the top of the second material guide plate, and the second screen plate is swingably disposed in a gap between the first material guide plate and the second material guide plate.

[0016] Furthermore, it also includes an auger arranged on the frame, and the feed end of the auger is arranged at the lower end of the first discharge port.

[0017] Furthermore, the auger conveyor is tilted on the frame, and the discharge end of the auger conveyor is higher than the feed end.

[0018] Furthermore, a hopper is provided below the higher end of the auger.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] In the screening device for the feed bin of the mixing station of the utility model, firstly, the large particles in the mixed material are crushed by the roller group in the box body, and the crushed material is screened through the first sieve plate below, and the qualified material is discharged through the first discharge port, and the particles with too large particle size are retained on the lower side of the first sieve plate. The second sieve plate is opened regularly by the cylinder, and the particles with too large particle size are discharged into the second discharge port for re-crushing;

[0021] The utility model discloses a screening device for a feeding bin of a mixing station, which can conveniently realize the crushing and screening of materials, and is beneficial to improving the mixing quality of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front view of the screening device for the feed bin of a mixing station of the utility model;

[0023] Figure 2 It is a schematic diagram of the internal structure of the screening mechanism of the utility model;

[0024] Icons: 10-frame, 20-screening mechanism, 200-box, 201-feed port, 202-first discharge port, 203-second discharge port, 204-roller group, 205-first screen plate, 206-elastic support member, 207-cam assembly, 208-first guide plate, 209-second guide plate, 30-protective box, 40-auger, 50-hopper, 60-second screen plate, 61-cylinder. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0026] Reference Figure 1 to Figure 2The utility model provides a screening device for a feed bin of a mixing station, comprising a frame 10, on which a screening mechanism 20, a protective box 30 and an auger 40 are arranged in sequence from top to bottom.

[0027] Among them, the screening mechanism 20 includes a box body 200 arranged on the frame 10, a feed port 201 is opened in the center of the top of the box body 200, and a second material guide plate 209 in an inverted V shape is provided at the bottom of the box body 200, and both ends of the second material guide plate 209 are welded to the inner bottom of the box body 200, wherein the bottom of the box body 200 located at both ends of the second material guide plate 209 is also provided with a first discharge port 202 and a second discharge port 203 respectively.

[0028] A roller group 204 is also arranged below the feed port 201 in the box body 200. The roller group 204 includes two groups of rollers rotating in opposite directions. The rollers are used to crush large particles of stone in the material that do not meet the particle size standards through extrusion.

[0029] In addition, a first screen plate 205 and a first material guide plate 208 are obliquely arranged in the box body 200, wherein the first screen plate 205 is obliquely arranged below the roller group 204 for screening the crushed materials, and the first material guide plate 208 is obliquely arranged below the roller group 204, and the first material guide plate 208 and the first screen plate 205 form a V-shaped structure with the opening facing upward.

[0030] The lower end of the first material guide plate 208 is located directly above the top of the second material guide plate 209 , and a gap is left between the lower end of the first material guide plate 208 and directly above the top of the second material guide plate 209 .

[0031] Reference Figure 2 The second sieve plate 60 is hinged to the lower end of the first sieve plate 205 so that the second sieve plate 60 can be swingably inserted into the gap between the first material guide plate 208 and the second material guide plate 209.

[0032] The lower end of the first guide plate 208 is hinged with a set of cylinders 61, and the other end of the cylinder 61 is hinged with the free end of the second screen plate 60, so that the free end of the second screen plate 60 can be closed at the lower end of the first guide plate 208 or rest on the top of the second guide plate 209 through the extension and contraction of the cylinder 61. Specifically:

[0033] Reference Figure 2The cylinder 61 is controlled by the PLC control system. When the cylinder 61 contracts, the free end of the second sieve plate 60 rotates clockwise, so that the second sieve plate 60 abuts against the lower end of the first guide plate 208. At this time, the crushed material is screened by the first sieve plate 205 and the second sieve plate 60, and then introduced into the first discharge port 202 through the second guide plate 209; after a period of time, the crushed stone particles with too large particle size accumulate on the first sieve plate 205. By periodically extending the cylinder 61, the free end of the second sieve plate 60 is placed against the top of the second guide plate 209, and the crushed stone particles with too large particle size can be discharged along the second discharge port 203 for re-crushing.

[0034] A protective box 30 is further provided below the first discharge port 202 to prevent dust from spilling out.

[0035] In addition, an auger 40 is also provided on the frame 10, and the feed end of the auger 40 is provided at the lower end of the first discharge port 202, and the screened material is introduced into the hopper 50 of the mixing station, wherein the auger 40 conveyor is inclined on the frame 10, the discharge end of the auger 40 conveyor is higher than the feed end, and the hopper 50 is provided below the discharge end of the auger 40.

[0036] In one embodiment, the first sieve plate 205 is supported inside the box body 200 by a plurality of elastic support members 206 . A cam assembly 207 is also provided inside the box body 200 to vibrate the first sieve plate 205 to prevent the first sieve plate 205 from being blocked.

[0037] It should be noted that the directions or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the directions and positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0038] 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 specific circumstances.

[0039] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A screening device for a feed bin of a mixing station, characterized in that: It comprises a frame (10) and the following components arranged on the frame (10): The screening mechanism (20) comprises a box body (200), wherein the top of the box body (200) is provided with a material inlet (201) and the bottom is provided with a second material guide plate (209) in an inverted V shape, and the bottom of the box body (200) located at both ends of the second material guide plate (209) is also provided with a first material outlet (202) and a second material outlet (203) respectively; A roller group (204) is arranged inside the box (200) below the feed inlet (201) and is used to crush materials; A first screen plate (205) is disposed obliquely below the roller assembly (204) and is used to screen the crushed material; A first material guide plate (208) is disposed obliquely below the roller assembly (204) and forms a V-shaped structure with the first screen plate (205) opening upward; A second screen plate (60) is hinged to a lower end of the first screen plate (205); and A cylinder (61) has one end hinged on the first guide plate (208) and the other end hinged to the free end of the second screen plate (60), so that the free end of the second screen plate (60) is closed at the lower end of the first guide plate (208) or rests on the top end of the second guide plate (209) through the extension and contraction of the cylinder (61).

2. The feeding bin screening device of a mixing station according to claim 1, characterized in that: The first sieve plate (205) is supported inside the box (200) via a plurality of elastic support members (206), and a cam assembly (207) is also provided inside the box (200) for vibrating the first sieve plate (205).

3. The feeding bin screening device of a mixing station according to claim 1 or 2, characterized in that: The roller set (204) includes two sets of rollers with opposite rotation directions.

4. The feeding bin screening device of a mixing station according to claim 1 or 2, characterized in that: The lower end of the first material guide plate (208) is located directly above the top of the second material guide plate (209), and the second screen plate (60) is swingably disposed in the gap between the first material guide plate (208) and the second material guide plate (209).

5. The feeding bin screening device of a mixing station according to claim 1, characterized in that: It also includes an auger (40) disposed on the frame (10), wherein the feed end of the auger (40) is disposed at the lower end of the first discharge port (202).

6. The feeding bin screening device of a mixing station according to claim 5, characterized in that: The auger (40) conveyor is arranged obliquely on the frame (10), and the discharge end of the auger (40) conveyor is higher than the feed end.

7. The feeding bin screening device of a mixing station according to claim 6, characterized in that: A hopper (50) is provided below the higher end of the auger (40).

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