Sandstone recycling and screening device for waste concrete

Abstract

The utility model relates to the field of waste concrete gravel recycling, in particular to a waste concrete gravel recycling and screening device which comprises a liquid collecting box, a drain outlet is formed in one side of the liquid collecting box, and a supporting plate is arranged on one side of the top of the liquid collecting box. A driving motor is arranged at the top of the supporting plate, the output end of the driving motor is vertically and downwards connected with a fixing shaft, the outer wall of the fixing shaft is fixedly sleeved with a screening ring, and a screening cavity is formed in the position, outside the fixing shaft, of the top end of the screening ring. According to the utility model, the driving motor, the fixed shaft, the screening ring and the guide plate are arranged in a matched manner, so that waste water obtained after sand and gravel separation of concrete can be further screened, fine sand and gravel which are not separated from the waste water can be further screened, and the content of suspended solids in the waste water can be reduced; therefore, the pollution of wastewater to the environment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste concrete sand and gravel recovery, in particular to a waste concrete sand and gravel recovery and screening device. Background Art

[0002] The sand and gravel recovery and screening device for waste concrete is a device specially designed to recover and process sand and gravel from waste concrete. It can crush and screen waste concrete, separating it into sand and gravel of different particle sizes, and then recycle the usable sand and gravel for reuse.

[0003] The mechanism of the sand and gravel recovery screening device can refer to the utility model disclosed in the authorization announcement number "CN 217698228 U" which discloses "a concrete mixing station sand and gravel recovery screening device". The screening belt is driven by the lifting motor to rotate and rise, so that the sand and gravel in the wastewater are preliminarily screened and processed through the operation of the screening belt. At the same time, the spiral conveying of the spiral blades can effectively prevent the accumulation of sand and gravel in the separation cover, thereby improving the screening effect of sand and gravel, and part of the wastewater carried in the sand and gravel flows back to the guide plate through the reflux hole for diversion, and is collected through the liquid collecting box for liquid treatment, thereby greatly improving the separation degree of wastewater and sand and gravel, and solving the problems of inconvenient sand and gravel transfer and low wastewater separation degree when separating and processing wastewater containing sand and gravel. However, when the nut is idling, it cannot be reset immediately, and when the nut is damaged, it is difficult to replace it quickly and conveniently.

[0004] However, the above-mentioned device only performs a single-side screening treatment on the concrete, and the discharged wastewater may still contain incompletely separated sand and gravel particles and other impurities. If these suspended matter are discharged directly, they will not only pollute the environment, but may also affect the normal operation of subsequent wastewater treatment equipment. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a sand and gravel recovery and screening device for waste concrete.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A sand and gravel recovery and screening device for waste concrete includes a sand and gravel recovery and screening device, the sand and gravel recovery and screening device includes a liquid collecting box, a sewage outlet is provided on one side of the liquid collecting box, a support plate is provided on one side of the top of the liquid collecting box, a driving motor is provided on the top of the support plate, the output end of the driving motor is vertically downwardly connected to a fixed shaft, a screening ring is provided on the outer wall of the fixed shaft, a screening cavity is provided on the top of the screening ring outside the fixed shaft, and a plurality of screening through holes are provided on the outer wall of the screening ring at equal distances, and a guide plate is provided on the top of the liquid collecting box on one side of the support plate.

[0008] In addition, a preferred structure is that a material discharge through hole is opened on one side of the bottom of the guide plate, and a collecting groove is opened on the top of the guide plate.

[0009] In addition, a preferred structure is that a transition cavity is provided between the collecting trough and the feed through hole, and the bottom of the collecting trough and the bottom of the transition cavity are both inclined toward the feed through hole.

[0010] In addition, a preferred structure is that the bottom of the fixed shaft is connected to the bottom of the liquid collecting tank through a bearing, and a through hole is opened in the support plate at the fixed shaft.

[0011] In addition, a preferred structure is that the support plate and the liquid collecting tank are connected and fixed by a plurality of bolts, and the top of the support plate is located outside the driving motor and is screwed with a protective cover.

[0012] In addition, the preferred structure is that an external threaded portion is provided at the bottom of the outer wall of the protective cover, and an installation groove is provided at the top of the support plate at the protective cover, an internal threaded portion is provided in the installation groove at the external threaded portion, and the internal threaded portion is threadedly connected to the external threaded portion.

[0013] The beneficial effects of the utility model are:

[0014] In the utility model, the coordinated arrangement of the driving motor, the fixed shaft, the screening ring and the guide plate facilitates further screening of the wastewater after the separation of concrete sand and gravel, and the unseparated fine sand and gravel in the wastewater can be further screened and processed, thereby reducing the content of suspended solids in the wastewater and thus reducing the pollution of the wastewater to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the cross section of the collecting tank;

[0016] Figure 2 It is a schematic structural diagram of the cross section of the collecting tank;

[0017] Figure 3 This is a structural schematic diagram of a sand and gravel recovery and screening device for waste concrete proposed by the utility model.

[0018] In the figure: 1. Liquid collecting tank; 11. Sewage outlet; 2. Screening ring; 3. Guide plate; 31. Feeding hole; 4. Support plate; 5. Protective cover; 6. Drive motor; 61. Fixed shaft; 7. Sand and gravel recovery screening device body. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Reference Figure 1-3 , a sand and gravel recovery and screening device for waste concrete, including a sand and gravel recovery and screening device 7, the sand and gravel recovery and screening device 7 includes a liquid collecting box 1, a sewage outlet is provided on one side of the liquid collecting box 1, a support plate 4 is provided on one side of the top of the liquid collecting box 1, a driving motor 6 is provided on the top of the support plate 4, and the output end of the driving motor 6 is vertically connected to a fixed shaft 61 downwardly, and a screening ring 2 is fixedly sleeved on the outer wall of the fixed shaft 61, and a screening cavity is provided on the top of the screening ring 2 at an equal distance from the outside of the fixed shaft 61, and a plurality of screening through holes are provided on the outer wall of the screening ring 2, and a guide plate 3 is provided on one side of the support plate 4 at the top of the liquid collecting box 1. It is worth noting that the specific structure, connection method and working principle of the sand and gravel recovery and screening device 7 and the liquid collecting box 1 are all existing technologies, and do not belong to the main technical problems to be solved in this technical solution, so they are not elaborated in this utility model.

[0021] In addition, a material discharge through hole 31 is provided on one side of the bottom of the guide plate 3 , and a collecting trough is provided on the top of the guide plate 3 .

[0022] In addition, a transition cavity is defined between the collecting trough and the material discharge through hole 31 , and the bottom of the collecting trough and the bottom of the transition cavity are both inclined toward the material discharge through hole 31 .

[0023] At the same time, the bottom of the fixed shaft 61 is connected to the bottom of the liquid collecting tank 1 through a bearing, and a through hole is opened in the support plate 4 at the fixed shaft 61.

[0024] At the same time, the support plate 4 and the liquid collecting box 1 are fixed by multiple bolts, and the top of the support plate 4 is located outside the drive motor 6 and is screwed with a protective cover 5. The protective cover 5 plays a certain protective role on the drive motor 6.

[0025] Furthermore, an external threaded portion is provided at the bottom of the outer wall of the protective cover 5, and a mounting groove is provided at the top of the support plate 4 at the protective cover 5, an internal threaded portion is provided in the mounting groove at the external threaded portion, and the internal threaded portion is threadedly connected to the external threaded portion.

[0026] In this embodiment, the fixed shaft 61 is driven to rotate by the driving motor 6, and the fixed shaft 61 rotates while driving the screening ring 2 to rotate, so that the wastewater after the separation of concrete sand and gravel is further screened and processed, and the fine sand and gravel that have not been separated in the wastewater can be further screened and processed, which can reduce the content of suspended solids in the wastewater, thereby reducing the pollution of wastewater to the environment.

[0027] Furthermore, by providing the guide plate 3 , it is convenient to guide the wastewater into the screening cavity of the screening ring 2 .

[0028] At the same time, the driving motor 6, the fixed shaft 61 and the screening ring 2 are detachable. After being used for a period of time, the screening ring 2 can be disassembled to clean the fine sand and gravel and solid suspended matter inside.

[0029] In the utility model, the coordinated arrangement of the driving motor 6, the fixed shaft 61, the screening ring 2 and the guide plate 3 facilitates further screening of the wastewater after the separation of concrete sand and gravel, and the unseparated fine sand and gravel in the wastewater can be further screened and processed, thereby reducing the content of suspended solids in the wastewater and thus reducing the pollution of the wastewater to the environment.

[0030] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sand and gravel recovery and screening device for waste concrete, comprising a sand and gravel recovery and screening device (7), characterized in that: The sand and gravel recovery screening device (7) comprises a liquid collecting box (1), a sewage outlet is provided on one side of the liquid collecting box (1), a support plate (4) is provided on one side of the top of the liquid collecting box (1), a driving motor (6) is provided on the top of the support plate (4), an output end of the driving motor (6) is vertically connected to a fixed shaft (61) downward, a screening ring (2) is fixedly sleeved on the outer wall of the fixed shaft (61), a screening cavity is provided at the top of the screening ring (2) outside the fixed shaft (61), and a plurality of screening through holes are provided on the outer wall of the screening ring (2) at equal distances, and a guide plate (3) is provided on the top of the liquid collecting box (1) on one side of the support plate (4).

2. The sand and gravel recovery and screening device for waste concrete according to claim 1, characterized in that: A material discharge through hole (31) is provided on one side of the bottom of the guide plate (3), and a collecting groove is provided on the top of the guide plate (3).

3. The sand and gravel recovery and screening device for waste concrete according to claim 2, characterized in that: A transition cavity is provided between the collecting trough and the material discharge through hole (31), and the bottom of the collecting trough and the bottom of the transition cavity are both inclined toward the material discharge through hole (31).

4. The sand and gravel recovery and screening device for waste concrete according to claim 1, characterized in that: The bottom of the fixed shaft (61) is connected to the bottom of the liquid collecting box (1) via a bearing, and a through hole is provided in the support plate (4) at the fixed shaft (61).

5. The sand and gravel recovery and screening device for waste concrete according to claim 1, characterized in that: The support plate (4) and the liquid collecting box (1) are connected and fixed by a plurality of bolts, and a protective cover (5) is screwed on the top of the support plate (4) located outside the driving motor (6).

6. The sand and gravel recovery and screening device for waste concrete according to claim 5, characterized in that: An external threaded portion is provided at the bottom of the outer wall of the protective cover (5), and a mounting groove is provided at the top of the support plate (4) at the protective cover (5), an internal threaded portion is provided in the mounting groove at the external threaded portion, and the internal threaded portion is threadedly connected to the external threaded portion.

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