Aggregate blending device for preparing low-carbon concrete

Abstract

The utility model relates to the technical field of concrete aggregate blending, in particular to an aggregate blending device for preparing low-carbon concrete. The aggregate blending device for low-carbon concrete preparation comprises a screening groove, water return ports and overflow ports which are distributed up and down are formed in the groove walls of the two sides of the screening groove, inner rotating plates capable of rotating towards the interior of the screening groove are installed on the inner plate wall of the screening groove through hinges, and filter screens are fixedly installed on the portions, on the outer sides of the water return ports, of the plate wall of the screening groove. An outer rotating plate capable of rotating towards the outer side of the screening groove is installed on the outer plate wall of the screening groove through a hinge. According to the aggregate blending device for preparing the low-carbon concrete, through the linkage design of the water return port, the overflow port and the sedimentation tank and the one-way flow blocking function of the inner rotating plate and the outer rotating plate, rapid sediment sedimentation and efficient clear water backflow are achieved, and the utilization rate of water resources is greatly increased.

Description

Technical Field

[0001] This utility model relates to the field of concrete aggregate preparation technology, and in particular to an aggregate preparation device for low-carbon concrete preparation. Background Technology

[0002] In the preparation of low-carbon concrete, the selection of aggregates is a crucial step in reducing carbon emissions. The mining, transportation, and production of traditional concrete aggregates (such as natural sand and gravel) consume significant amounts of energy and generate carbon emissions. Therefore, optimizing aggregate sources, production processes, and recycling technologies can significantly reduce the carbon footprint of concrete. Aggregates used in concrete preparation typically require screening and blending, and water washing screening is a commonly used aggregate processing method. Water washing effectively removes impurities such as mud, stone powder, and mica from the aggregate surface. Excessive levels of these impurities can affect the workability and strength of concrete. For example, mud reduces the bond between aggregates and cement paste, and excessive stone powder increases the water demand of concrete, worsening its workability. Simultaneously, it can make the aggregate particles more uniform in size and the gradation more reasonable. Aggregates of different particle sizes play different roles in concrete; good gradation enables concrete to have good fluidity and density during construction, improving concrete quality. Traditional water washing screening equipment often combines vibrating screens with fixed washing structures, which has the following problems:

[0003] 1. Serious waste of water resources: The washing process requires a large amount of clean water to be continuously injected, while the wastewater recycling and treatment efficiency is low, resulting in a large consumption of water resources;

[0004] 2. Poor mud and sand separation effect: Existing equipment does not completely separate mud and sand after washing, which easily causes turbidity in circulating water and affects the secondary washing effect of aggregates.

[0005] Therefore, it is necessary to provide a new aggregate mixing device for the preparation of low-carbon concrete to solve the above-mentioned technical problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides an aggregate mixing device for preparing low-carbon concrete.

[0007] The aggregate mixing device for low-carbon concrete preparation provided by this utility model includes a screening trough. One end of the screening trough is provided with an opening and is fixedly connected with an inclined discharge plate. Both sides of the screening trough are provided with a water return port and an overflow port distributed vertically.

[0008] Sedimentation tanks are fixedly installed on both outer walls of the screening tank, and the sedimentation tanks are connected to the screening tank through a return water port and an overflow port.

[0009] The inner plate wall of the screening groove is hingedly provided with an inner rotating plate which can rotate towards the inside of the screening groove, the inner rotating plate blocks the flow of water from the backwater outlet into the sediment tank, and a filter screen is fixedly installed on the plate wall of the screening groove outside the backwater outlet;

[0010] The outer plate wall of the screening groove is hingedly provided with an outer rotating plate which can rotate towards the outside of the screening groove, the outer rotating plate blocks the backflow of water from the overflow outlet into the screening groove, and a fence is fixedly installed on the plate wall of the screening groove inside the overflow outlet.

[0011] Preferably, a deflection assembly is installed in the screening groove, the deflection assembly comprises a screening plate, four corners of the screening plate are provided with hingedly connected hanging columns, and the top of the hanging column is hingedly connected with the inner groove wall of the screening groove through a rotating shaft;

[0012] The deflection assembly further comprises a driving member for driving the screening plate to reciprocatingly deflect along the screening groove, and the driving member is away from the opening direction of the screening groove.

[0013] Preferably, the driving member comprises a curved shaft and a portal frame, the curved shaft is hingedly connected with the screening groove through a support, a rotating motor for driving the curved shaft to rotate is installed on the support, the portal frame is fixedly installed on the screening groove, a middle connecting rod is hingedly connected with the curved shaft, and the other end of the middle connecting rod is sleeved on the portal frame and hingedly connected with the portal frame.

[0014] Preferably, the two inner walls at the connection between the screening groove and the inclined discharge plate are provided with sliding rails, and a water baffle for sealing the opening is inserted between the two sliding rails.

[0015] Preferably, a sewage discharge valve is fixedly installed on the outer wall of the sediment tank.

[0016] Preferably, the aperture of the fence is smaller than the particle size of the aggregate.

[0017] Compared with the related art, the aggregate blending device for low-carbon concrete preparation has the following beneficial effects:

[0018] Through the linkage design of the backwater outlet, the overflow outlet and the sediment tank, and the one-way flow blocking function of the inner rotating plate and the outer rotating plate, the present application realizes rapid sedimentation of silt and efficient backflow of clean water, and greatly improves the utilization rate of water resources. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The structure diagram of a preferred embodiment of the aggregate blending device for low-carbon concrete preparation provided by the present application is shown in the figure;

[0020] Figure 2 The structure diagram of a preferred embodiment of the aggregate blending device for low-carbon concrete preparation provided by the present application is shown in the figure; Figure 1 The explosion structure diagram is shown in the figure;

[0021] Figure 3 As Figure 2 The structural schematic view of the screening groove is shown in the figure.

[0022] Figure 4 As Figure 3 The installation structure schematic view of the inner rotating plate, the outer rotating plate and the sediment tank of the screening groove is shown in the figure.

[0023] Figure 5 As Figure 2 The structural schematic view of the deflection assembly is shown in the figure.

[0024] The figure mark: 1, screening groove; 1a, sliding rail; 1b, backwater outlet; 1c, overflow outlet; 11, inclined discharge plate; 12, filter screen; 13, fence; 2, inner rotating plate; 3, outer rotating plate; 4, sediment tank; 41, blowdown valve; 5, deflection assembly; 51, screening plate; 52, hanging column; 53, driving piece; 531, curved shaft; 532, rotating motor; 533, middle connecting rod; 534, gantry; 6, water baffle. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail by combining with the drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0026] The specific implementation of the utility model will be described in detail by combining with specific examples.

[0027] Please refer to Figures 1 to 5 The low-carbon concrete preparation aggregate blending device provided by the embodiment of the utility model, the low-carbon concrete preparation aggregate blending device includes screening groove 1, sediment tank 4 and deflection assembly 5.

[0028] In the embodiment of the utility model, please refer to Figures 1 to 5 One end of the screening groove 1 is provided with an opening and fixedly connected with the inclined discharge plate 11, and the inner wall of the two sides at the connection between the screening groove 1 and the inclined discharge plate 11 is provided with the sliding rail 1a, and the water baffle 6 for sealing the opening is arranged between the two sliding rails 1a;

[0029] And the screening tank 1 is installed with a deflection assembly 5, the deflection assembly 5 includes screening plate 51, four corners on the screening plate 51 are installed with the hanged connection column 52 of rotary connection, and the top of the hanged connection column 52 is rotatably connected with the inner groove wall of the screening tank 1 through a rotating shaft; the deflection assembly 5 further includes a driving member 53 for driving the screening plate 51 to reciprocatingly deflect along the screening tank 1, and the driving member 53 is away from the opening direction of the screening tank 1, the driving member 53 includes a curved shaft 531 and a portal frame 534, the curved shaft 531 is rotatably installed on the screening tank 1 through a support, and a rotating motor 532 for driving the curved shaft 531 to rotate is installed on the support, the portal frame 534 is fixedly installed on the screening tank 1, a middle connecting rod 533 rotatably connected with the curved shaft 531 is installed on the curved shaft 531, and the other end of the middle connecting rod 533 is sleeved on the portal frame 534 and rotatably connected with the portal frame 534.

[0030] It should be noted that: the aggregate prepared by the concrete is put into the screening plate 51, at the same time, a proper amount of water (slightly lower than the backwater outlet 1b) is injected to wash the aggregate, the rotating motor 532 is started to drive the curved shaft 531 to rotate, since the four corners of the screening plate 51 are rotatably connected with the inner wall of the screening tank 1 through the hanged connection column 52, the middle connecting rod 533 can drive the screening plate 51 to reciprocatingly deflect and vibrate through the portal frame 534, therefore, the aggregate jumps along the screening plate 51 to the opening direction of the screening tank 1, the dust on the aggregate can be well washed by the water in the process, the cleanliness of the aggregate is greatly improved, and the hidden danger that the quality of the subsequently prepared concrete is poor due to the dust and impurities attached to the aggregate is reduced, and part of the aggregate with small size can be screened by the screening plate 51 and fall to the bottom of the screening tank 1.

[0031] In the scheme, when the aggregate is washed and screened, the water baffle 6 is inserted to seal the opening of the screening tank 1, when the aggregate needs to be discharged, the water baffle 6 is opened to discharge the aggregate from the inclined discharge plate 11.

[0032] In the embodiment of the utility model, please refer to Figures 1 to 5 , the two side groove walls of the screening tank 1 are provided with backwater outlets 1b and overflow outlets 1c distributed upwards and downwards, the two side outer walls of the screening tank 1 are fixedly installed with sediment tanks 4, the outer side walls of the sediment tanks 4 are fixedly installed with blowdown valves 41, the sediment tanks 4 are communicated with the screening tank 1 through the backwater outlets 1b and the overflow outlets 1c, the inner plate wall of the screening tank 1 is hingedly installed with an inner rotating plate 2 rotatable to the inside of the screening tank 1, the inner rotating plate 2 hinders the water from flowing into the sediment tank 4 through the backwater outlet 1b, the plate wall of the screening tank 1 outside the backwater outlet 1b is fixedly installed with a filter screen 12, and the outer plate wall of the screening tank 1 is hingedly installed with an outer rotating plate 3 rotatable to the outside of the screening tank 1, the outer rotating plate 3 hinders the water from flowing back into the screening tank 1 through the overflow outlet 1c, and the plate wall of the screening tank 1 inside the overflow outlet 1c is fixedly installed with a fence 13.

[0033] It should be noted that when the screening plate 51 is deflected, the water in the screening groove 1 spreads to both sides, so that the water pushes the outer turning plate 3 outside the overflow port 1c to turn outward and flow into the sediment tank 4, at this time the water also carries the silt into the sediment tank 4 on both sides, and as the water level in the sediment tank 4 rises, the water pushes the inner turning plate 2 inside the backwater port 1b to turn inward and backflow into the screening groove 1, because the silt is heavy and is not easy to enter the upper inner turning plate 2 during backflow, so that the accumulated water in the ship-shaped cleaning tank 1 is relatively kept clean, and the cleanliness of the water to the aggregate cleaning is improved;

[0034] And through the linkage design of the backwater port 1b, the overflow port 1c and the sediment tank 4, combined with the one-way flow blocking function of the inner turning plate 2 and the outer turning plate 3, the silt is quickly deposited and the clean water is efficiently backflowed, greatly improving the utilization rate of water resources.

[0035] Further, the bar grating 13 has a hole diameter smaller than the particle size of the aggregate, so as to prevent the aggregate from falling into the sediment tank 4 from the overflow port 1c, and the silt can flow into the sediment tank 4 through the bar grating 13, and the filter screen 12 installed outside the backwater port 1b can reduce the silt backflowing into the screening groove 1 from the backwater port 1b.

[0036] The working principle of the aggregate adjusting device for low-carbon concrete preparation provided by the utility model is as follows:

[0037] The aggregate for concrete preparation is put into the screening plate 51, and at the same time, appropriate amount of water (slightly lower than the backwater port 1b) is injected to clean the aggregate, and the rotating motor 532 is started to drive the curved shaft 531 to rotate, because the four corners of the screening plate 51 are rotationally connected to the inner wall of the screening groove 1 through the hanging column 52, so the middle connecting rod 533 can drive the screening plate 51 to reciprocatingly deflect and vibrate through the gantry 534, so the aggregate jumps along the screening plate 51 to the opening direction of the screening groove 1, and the dust on the aggregate can be well cleaned by the water, greatly improving the cleanliness of the aggregate and reducing the hidden danger that the subsequent prepared concrete is not good in quality due to the dust and impurities attached to the aggregate, and part of the aggregate with small size can be screened by the screening plate 51 and fall to the bottom of the screening groove 1.

[0038] When the screening plate 51 is deflected, the water in the screening groove 1 spreads to both sides, so that the water pushes the outer turning plate 3 outside the overflow port 1c to turn outward and flow into the sediment tank 4, at this time the water also carries the silt into the sediment tank 4 on both sides, and as the water level in the sediment tank 4 rises, the water pushes the inner turning plate 2 inside the backwater port 1b to turn inward and backflow into the screening groove 1, because the silt is heavy and is not easy to enter the upper inner turning plate 2 during backflow, so that the accumulated water in the ship-shaped cleaning tank 1 is relatively kept clean, and the cleanliness of the water to the aggregate cleaning is improved.

[0039] The circuit and the control involved in the utility model are prior art, and will not be described in detail here.

[0040] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation using the utility model specification and the attached drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. An aggregate mixing device for preparing low-carbon concrete, characterized in that, Includes a screening tank (1), one end of which is provided with an opening and is fixedly connected with an inclined discharge plate (11), and both sides of the screening tank (1) are provided with a water return port (1b) and an overflow port (1c) distributed vertically. Sedimentation tanks (4) are fixedly installed on both outer walls of the screening tank (1), and the sedimentation tanks (4) are connected to the screening tank (1) through the return water port (1b) and the overflow port (1c); The inner wall of the screening tank (1) is fitted with an inner rotating plate (2) that can rotate into the screening tank (1) via a hinge. The inner rotating plate (2) prevents the water from flowing from the return water port (1b) into the sedimentation tank (4). A filter screen (12) is fixedly installed on the wall of the screening tank (1) outside the return water port (1b). The outer wall of the screening tank (1) is fitted with an outer rotating plate (3) that can rotate outward from the screening tank (1) via a hinge. The outer rotating plate (3) prevents water from flowing back into the screening tank (1) from the overflow port (1c). A fence (13) is fixedly installed on the wall of the screening tank (1) inside the overflow port (1c).

2. The aggregate mixing device for preparing low-carbon concrete according to claim 1, characterized in that, The screening tank (1) is equipped with a swing assembly (5), which includes a screening plate (51). Each of the four corners of the screening plate (51) is equipped with a rotating connecting column (52), and the top of the connecting column (52) is rotatably connected to the inner wall of the screening tank (1) through a rotating shaft. The swaying assembly (5) further includes a drive member (53) for driving the screening plate (51) to sway back and forth along the screening groove (1), and the drive member (53) is located away from the opening direction of the screening groove (1).

3. The aggregate mixing device for low-carbon concrete preparation according to claim 2, characterized in that, The drive unit (53) includes a curved shaft (531) and a gantry frame (534). The curved shaft (531) is rotatably mounted on the screening trough (1) via a bracket, and a rotating motor (532) for driving the curved shaft (531) to rotate is mounted on the bracket. The gantry frame (534) is fixedly mounted on the screening trough (1). A central connecting rod (533) is rotatably connected to the curved shaft (531), and the other end of the central connecting rod (533) is sleeved on the gantry frame (534) and rotatably connected to the gantry frame (534).

4. The aggregate mixing device for preparing low-carbon concrete according to claim 1, characterized in that, The inner walls on both sides of the connection between the screening trough (1) and the inclined discharge plate (11) are equipped with slide rails (1a), and a baffle plate (6) for sealing the opening is inserted between the two slide rails (1a).

5. The aggregate mixing device for preparing low-carbon concrete according to claim 1, characterized in that, A drain valve (41) is fixedly installed on the outer wall of the sedimentation tank (4).

6. The aggregate mixing device for preparing low-carbon concrete according to claim 1, characterized in that, The aperture of the fence (13) is smaller than the particle size of the aggregate.

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