Proportioning and mixing device for concrete recycled aggregate production

Abstract

The utility model discloses a proportioning and mixing device for concrete recycled aggregate production. The proportioning and mixing device comprises a plurality of rolling mechanisms, a plurality of feeding units, a mixing mechanism and a discharging unit, the rolling mechanism comprises a rack, a plurality of guide wheels rotationally arranged on the rack and a roller erected on the guide wheels, the roller comprises a roller frame and a net roller arranged on the roller frame, and a plurality of net holes are formed in the net roller; the feeding unit is arranged below the roller so as to receive materials leaked from the meshes; the mixing mechanism comprises a stirring tank, a stirring mechanism is arranged in the stirring tank, and an opening is formed in the top of the stirring tank and corresponds to the lower portion of the output end of the feeding unit; a discharge hole is formed in the bottom of the stirring tank; and the discharging unit is arranged below the discharging hole of the mixing mechanism. The recycled aggregate is turned and thrown through the rolling mechanism, the caked recycled aggregate is scattered, the scattered recycled aggregate is conveyed to the mixing mechanism through the feeding unit to be stirred and mixed, and the mixing effect of the recycled aggregate of the recycled concrete is improved.

Description

Technical Field

[0001] This utility model relates to the field of recycled concrete production technology, and in particular to a proportioning and mixing device for the production of recycled concrete aggregates. Background Technology

[0002] Aggregates made from waste concrete are called recycled concrete aggregates (referred to as recycled aggregates). Recycled concrete is a new type of concrete made by using recycled aggregates to partially or completely replace natural aggregates such as sand and gravel, and then adding cement, water, etc. When the moisture content of recycled aggregates is high, they are prone to clumping, which leads to incomplete mixing of various raw materials and affects the mixing quality. This problem urgently needs to be solved. Utility Model Content

[0003] In view of this, the present invention proposes a proportioning and mixing device for the production of recycled aggregates in concrete, with the aim of improving the mixing effect of recycled aggregates in recycled concrete.

[0004] The solution provided by this utility model includes:

[0005] A proportioning and mixing device for producing recycled aggregates for concrete, comprising:

[0006] Multiple tumbling mechanisms, multiple feeding units, a mixing mechanism, and a discharging unit;

[0007] The tumbling mechanism includes a frame, a plurality of guide wheels rotatably mounted on the frame, and a roller mounted on the guide wheels. The roller includes a frame and a mesh cylinder mounted on the frame, and the mesh cylinder has a plurality of mesh holes.

[0008] The feeding unit is located below the roller to receive material leaking from the mesh.

[0009] The mixing mechanism includes a mixing tank, in which a mixing mechanism is provided. The top of the mixing tank has an opening corresponding to the bottom of the output end of the feeding unit; the bottom of the mixing tank has a discharge port.

[0010] The discharge unit is located below the discharge port of the mixing mechanism.

[0011] As a further optional solution, guide rings are provided at both ends of the tube frame, and guide grooves are provided on the outer side of the guide rings;

[0012] The guide wheels are provided in four parts, with each pair of guide wheels corresponding to both sides of a guide ring. At least a portion of the guide wheels are disposed in the guide groove, and at least one of the guide wheels is connected to the first motor for transmission.

[0013] As a further optional solution, the frame is provided with baffles located on both sides of the roller.

[0014] As a further optional solution, the bottom of the mixing tank is provided with multiple discharge ports, each discharge port is connected to a receiving box through a conveying pipe, and the bottom of the receiving box is provided with an outlet; the conveying pipe is provided with a flow-stopping mechanism for opening and closing.

[0015] As a further optional solution, the flow-blocking mechanism includes a horizontally arranged insert plate and a cylinder for driving the insert plate to move horizontally;

[0016] The side of the feed pipe has a socket for inserting the insert plate.

[0017] As a further optional solution, both the feeding unit and the discharging unit adopt belt conveyors;

[0018] The belt conveyor includes a conveyor frame, with a first drive roller and a second drive roller at the front and rear ends of the conveyor frame. The first drive roller is connected to a second motor. A plurality of intermediate drive rollers are provided between the first drive roller and the second drive roller. The plurality of intermediate drive rollers are paired in pairs, and the pairs of intermediate drive rollers are arranged in a V-shape. A conveyor belt is wound around the first drive roller, the intermediate drive rollers, and the second drive roller.

[0019] As a further optional solution, the stirring mechanism includes a rotatable stirring shaft with stirring blades on it, and the stirring shaft is connected to a third motor for transmission.

[0020] Compared with the prior art, the proportioning and mixing device for producing recycled aggregates in concrete of this application has at least the following advantages:

[0021] The recycled aggregate is tumbled and thrown by the tumbling mechanism, which makes the recycled aggregate continuously roll in the drum, breaking up the clumps of recycled aggregate. The broken recycled aggregate is then transported to the mixing mechanism through the feeding unit for mixing, thereby improving the mixing effect of recycled aggregate in recycled concrete. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a proportioning and mixing device for the production of recycled aggregates in concrete according to this utility model;

[0023] Figure 2 This is a schematic diagram showing the cooperation between the tumbling mechanism and the feeding unit;

[0024] Figure 3 This is an exploded diagram of the tumbling mechanism;

[0025] Figure 4 yes Figure 2 Enlarged view of A in the middle;

[0026] Figure 5This is a schematic diagram showing the coordination between the mixing mechanism and the discharge unit;

[0027] Figure 6 It is a cross-sectional view of the mixing mechanism and the discharge unit in operation;

[0028] Figure 7 yes Figure 5 Enlarged view of B in the middle;

[0029] Figure 8 This is an exploded diagram of a belt conveyor.

[0030] In the diagram: 1. Tumbling mechanism; 11. Frame; 111. Guide wheel; 112. First motor; 113. Baffle; 12. Roller; 121. Cylindrical frame; 122. Net cylinder; 123. Guide ring; 1231. Guide groove;

[0031] 2. Feeding unit;

[0032] 3. Mixing mechanism; 31. Mixing tank; 32. Mixing mechanism; 321. Mixing shaft; 322. Mixing blade; 323. Third motor; 33. Conveying pipe; 34. Receiving box; 341. Outlet; 35. Cutting mechanism; 351. Insert plate; 352. Cylinder;

[0033] 4. Discharge unit;

[0034] 5. Belt conveyor; 51. Conveyor frame; 52. First drive roller; 53. Second drive roller; 54. Second motor; 55. Intermediate drive roller; 56. Conveyor belt. Detailed Implementation

[0035] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0036] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] refer to Figure 1-8 An embodiment of this utility model shows a proportioning and mixing device for the production of recycled concrete aggregate, including multiple tumbling mechanisms 1, multiple feeding units 2, a mixing mechanism 3, and a discharging unit 4.

[0040] The tumbling mechanism 1 includes a frame 11, a plurality of guide wheels 111 rotatably mounted on the frame 11, and a roller 12 mounted on the guide wheels 111. The roller 12 includes a frame 121 and a mesh cylinder 122 mounted on the frame 121. The mesh cylinder 122 has a plurality of mesh holes (not shown). The feeding unit 2 is located below the roller 12 to receive material leaking from the mesh holes. The mixing mechanism 3 includes a stirring tank 31, in which a stirring mechanism 32 is provided. The top of the stirring tank 31 has an opening corresponding to the bottom of the output end of the feeding unit 2. The bottom of the stirring tank 31 has a discharge port (not marked in the figure). The discharge unit 4 is located below the discharge port of the mixing mechanism 3.

[0041] Specifically, such as Figure 2As shown, workers can shovel raw materials (recycled aggregate or other raw materials) into the drum 12. Different raw materials correspond to different drums 12. The drum 12 rotates on the frame 11, causing the raw materials inside the drum 12 to be turned over and thrown, breaking up the lumpy raw materials. The loose raw materials can be screened out through the mesh of the screen cylinder 122. The mesh size of the screen cylinder 122 used for different raw materials can be different. The raw materials are screened out from the drum 12 and fall into the feeding unit 2. The feeding unit 2 conveys the raw materials to the mixing tank 31 of the mixing mechanism 3. The mixing mechanism 32 mixes the various raw materials. The mixed material is discharged from the discharge port at the bottom of the mixing tank 31 to the discharge unit 4. The discharge unit 4 transports the mixed material away.

[0042] The tumbling mechanism 1 is used to tumble and throw the recycled aggregate, so that the recycled aggregate is continuously tumbled in the drum 12, breaking up the clumps of recycled aggregate. The broken recycled aggregate is then transported to the mixing mechanism 3 through the feeding unit 2 for mixing, thereby improving the mixing effect of recycled aggregate in recycled concrete.

[0043] Among them, the mesh cylinder 122 is a metal mesh structure, and the mesh cylinder 122 can be fixed to the cylinder frame 121 by welding, bolting, binding or other methods.

[0044] In some embodiments, to ensure stable rotation of the roller 12 on the frame 11, such as Figure 2-4 As shown, guide rings 123 are provided at both ends of the cylinder frame 121, and guide grooves 1231 are provided on the outer side of the guide rings 123. Four guide wheels 111 are provided, with each pair of guide wheels 111 corresponding to both sides of a guide ring 123. At least a portion of each guide wheel 111 is disposed within the guide groove 1231, and at least one guide wheel 111 is connected to the first motor 112 for transmission. The first motor 112 drives at least one guide wheel 111 to rotate, and this guide wheel 111 can drive the roller 12 to rotate through friction. The guide wheel 111 is engaged within the guide groove 1231, ensuring that the roller 12 will not disengage from the guide wheel 111, thus making the rotation of the roller 12 more stable.

[0045] In some embodiments, such as Figure 2 As shown, the frame 11 is provided with baffles 113 on both sides of the roller 12. In this way, the baffles 113 can block the sides of the roller 12 and prevent the raw materials inside the roller 12 from flying to both sides.

[0046] In some embodiments, to improve discharge efficiency and control discharge speed, such as Figure 5 and Figure 6As shown, the mixing tank 31 has multiple discharge ports at its bottom. Each discharge port is connected to a receiving box 34 via a conveying pipe 33. The bottom of the receiving box 34 has an outlet 341. The conveying pipe 33 is equipped with a flow-stopping mechanism 35 for opening and closing. The multiple discharge ports allow the mixing tank 31 to have a high maximum discharge speed, while the flow-stopping mechanism 35 can adjust the discharge speed.

[0047] The above-mentioned solutions are specific, such as Figure 7 As shown, the flow-stopping mechanism 35 includes a horizontally arranged insert plate 351 and a cylinder 352 for driving the insert plate 351 to move horizontally; the side of the conveying pipe 33 has an insertion port (not marked) for the insert plate 351 to be inserted. By adjusting the position of the insert plate 351 using the cylinder 352, the cross-sectional area of ​​the flow in the conveying pipe 33 can be adjusted, that is, the flow rate in the conveying pipe 33 can be controlled, and the conveying pipe 33 can even be shut off; thereby realizing the regulation of the discharge speed.

[0048] The above-mentioned solutions are specific, such as Figure 7 As shown, the stirring mechanism 32 includes a rotatable stirring shaft 321, on which stirring blades 322 are provided, and the stirring shaft 321 is connected to a third motor 323 for transmission.

[0049] In some embodiments, to ensure stable material delivery, such as Figure 8 As shown, both the feeding unit 2 and the discharging unit 4 adopt belt conveyors 5; the belt conveyor 5 includes a conveyor frame 51, and the front and rear ends of the conveyor frame 51 are provided with a first drive roller 52 and a second drive roller 53. The first drive roller 52 is connected to the second motor 54 for transmission; a plurality of intermediate drive rollers 55 are provided between the first drive roller 52 and the second drive roller 53. The plurality of intermediate drive rollers 55 are paired in pairs, and the two pairs of intermediate drive rollers 55 are arranged in a V-shape; a conveyor belt 56 is wound on the first drive roller 52, the intermediate drive rollers 55 and the second drive roller 53.

[0050] By setting the intermediate drive roller 55 into a V-shaped structure, the conveyor belt 56 is shaped into a V-shaped bearing surface by the intermediate drive roller 55, so that when the raw material falls on the conveyor belt 56, the raw material will not leak to both sides of the conveyor belt 56.

[0051] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0052] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A proportioning mixing device for concrete recycled aggregate production, characterized in that, The device comprises a plurality of tumbling mechanisms, a plurality of feeding units, a mixing mechanism and a discharging unit. The tumbling mechanism comprises a frame, a plurality of guide wheels rotatably arranged on the frame and a roller arranged on the guide wheels, the roller comprises a roller frame and a mesh roller arranged on the roller frame, and a plurality of mesh holes are arranged on the mesh roller. The feeding unit is arranged below the roller to receive the material leaked from the mesh holes. The mixing mechanism comprises a stirring tank, a stirring mechanism is arranged in the stirring tank, an opening is arranged at the top of the stirring tank and below the output end of the feeding unit, and a discharging port is arranged at the bottom of the stirring tank. The discharging unit is arranged below the discharging port of the mixing mechanism.

2. The proportioning and mixing device for concrete recycled aggregate production according to claim 1, wherein: Guide rings are arranged at both ends of the roller frame, and guide grooves are arranged on the outer sides of the guide rings; The guide wheels are arranged in pairs, at least part of the guide wheels are arranged in the guide grooves, and at least one of the guide wheels is connected with the first motor.

3. The proportioning and mixing device for concrete recycled aggregate production according to claim 2, wherein: Baffles are arranged on both sides of the roller frame.

4. The proportioning and mixing device for concrete recycled aggregate production according to any one of claims 1-3, wherein: A plurality of discharging ports are arranged at the bottom of the stirring tank, each discharging port is connected with a receiving box through a conveying pipe, an outlet is arranged at the bottom of the receiving box, and a shut-off mechanism is arranged on the conveying pipe to realize opening and closing.

5. The proportioning and mixing device for concrete recycled aggregate production according to claim 4, wherein: The shut-off mechanism comprises a horizontally arranged plug-in plate and an air cylinder for driving the plug-in plate to move horizontally; A plug-in opening is arranged on the side of the conveying pipe for the plug-in plate to insert.

6. The proportioning and mixing device for concrete recycled aggregate production according to claim 1, wherein: The feeding unit and the discharging unit both adopt belt conveyors; The belt conveyor comprises a conveying frame, first and second driving rollers are arranged at the front and rear ends of the conveying frame, the first driving roller is connected with the second motor, a plurality of intermediate driving rollers are arranged between the first and second driving rollers, the intermediate driving rollers are arranged in pairs and in a V shape, and a conveying belt is wound around the first driving roller, the intermediate driving rollers and the second driving roller.

7. The proportioning and mixing device for concrete recycled aggregate production according to claim 1, wherein: The stirring mechanism comprises a rotatable stirring shaft, stirring blades are arranged on the stirring shaft, and the stirring shaft is connected with the third motor. ​

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