Concrete aggregate conveying system

Abstract

The invention relates to a concrete aggregate conveying system, and belongs to the technical field of concrete production, the concrete aggregate conveying system comprises a horizontal conveying belt located below a stock bin, the horizontal conveying belt comprises a first conveying belt located below a coarse aggregate bin and a second conveying belt located below a fine aggregate bin, and the second conveying belt is located above the first conveying belt; the discharging end of the second conveying belt is located on the first conveying belt, a cleaning mechanism and an air drying mechanism are arranged on the first conveying belt, the cleaning mechanism is used for washing aggregate, and the air drying mechanism is used for air drying the washed aggregate; the first conveying belt is obliquely arranged, and the height of the discharging end of the first conveying belt is larger than that of the feeding end of the first conveying belt, so that flushing water flows along the first conveying belt and is separated from the first conveying belt. The method has the effect of improving the quality of the concrete.

Description

Technical Field

[0001] The present application relates to the technical field of concrete production, and in particular to a concrete aggregate conveying system. Background Art

[0002] Concrete is a general term for engineering composite materials that are made of aggregates bonded together by cementitious materials. The term concrete usually refers to cement as a cementitious material, sand and stone as aggregates, and water (which may contain admixtures and additives) in a certain proportion, and then mixed to obtain cement concrete, also known as ordinary concrete, which is widely used in civil engineering.

[0003] The delivery of concrete raw materials into the mixer usually involves the following steps.

[0004] Raw material preparation: First, you need to prepare various raw materials for concrete, such as cement, sand, stone (such as crushed stone or pebbles), water, and any additives that may be needed.

[0005] Loading: Raw materials are usually loaded into specific containers, such as hoppers or silos. These containers can be fixed or mobile, depending on the setup of the production site.

[0006] Conveying System: Belt Conveyor: Commonly used to transport raw materials from silos or storage areas to the vicinity of the mixer, belt conveyors can efficiently and continuously transport large amounts of material.

[0007] Pneumatic conveying: For powdered materials such as cement, pneumatic conveying systems are sometimes used, whereby the material is conveyed to the mixer using air flow through a pipe.

[0008] Metering and batching: Before the raw materials enter the mixer, they usually need to be accurately measured to ensure the quality of the concrete. This is usually achieved through an automatic batching system that can automatically adjust the amount of each raw material according to the preset mix ratio.

[0009] Feeding into the mixer: The measured raw materials are fed into the mixer. In some modern concrete mixing plants, this process is automated, with computer control systems precisely controlling the time and amount of each raw material fed into the mixer.

[0010] Mixing: The raw materials are efficiently mixed in the mixer for a certain period of time to form a uniform concrete mixture, which can then be transported to the construction site for pouring.

[0011] However, after the aggregate is fed into the silo, it has a certain amount of mud. Flushing the aggregate can improve the cleanliness of the aggregate, but the washed mud will flow on the surface of the internal aggregate. After the above aggregate is put into the mixer, the mud content of the finished concrete will increase. When the mud content increases, it will cause cracks, cracks and fissures in the concrete structure, reduce strength, and cause the edges and corners to fall off. At the same time, aggregates with high mud content will reduce the gelling power of cement and weaken the bond strength of cement to sand and gravel, directly reducing the strength and durability of concrete, and shortening the service life of concrete. Summary of the invention

[0012] In order to improve the quality of concrete, the present application provides a concrete aggregate conveying system.

[0013] The concrete aggregate conveying system provided in this application adopts the following technical solution: A concrete aggregate conveying system comprises a horizontal conveyor belt located below a silo, the horizontal conveyor belt comprises a first conveyor belt located below a coarse aggregate silo and a second conveyor belt located below a fine aggregate silo, the second conveyor belt is located above the first conveyor belt, the discharge end of the second conveyor belt is located on the first conveyor belt, a cleaning mechanism and an air-drying mechanism are provided on the first conveyor belt, the cleaning mechanism is used for flushing aggregates, and the air-drying mechanism is used for air-drying flushed aggregates; the first conveyor belt is arranged obliquely, the height of the discharge end of the first conveyor belt is greater than the height of the feed end so that flushing water flows along the first conveyor belt and separates from the first conveyor belt.

[0014] Optionally, the cleaning mechanism includes a cleaning box snapped onto the first conveyor belt mounting frame, both ends of the cleaning box are opened, the cleaning mechanism also includes a first flushing pipe arranged in the cleaning box, a plurality of first nozzles are arranged on the first flushing pipe, the first flushing pipe is provided with a plurality of first flushing nozzles, the length direction of the first flushing pipe is perpendicular to the length direction of the first conveyor belt and is located above the first conveyor belt, the first flushing pipe is located at the top of the cleaning box and is arranged along the length direction of the first conveyor belt, and the first flushing pipe is connected to an external water source.

[0015] Optionally, the cleaning mechanism also includes a second flushing pipe arranged on the side wall of the cleaning box, a plurality of second nozzles are arranged on the second flushing pipe, the length of the second flushing pipe is parallel to the length direction of the first conveyor belt, the second nozzles are laterally directed toward the coarse aggregate on the first conveyor belt, and the second flushing pipe is connected to an external water source.

[0016] Optionally, the second flushing pipe is rotatably arranged in a cleaning box, the rotation axis of the second flushing pipe is parallel to the length direction of the first conveyor belt, and a first driving member for driving the second flushing pipe to reciprocate is arranged in the cleaning box.

[0017] Optionally, a cleaning roller is rotatably arranged in the cleaning box, the length direction of the cleaning roller is parallel to the length direction of the first flushing pipe, and a brush is arranged on the cleaning roller, and the end of the brush abuts against the conveying surface of the first conveyor belt.

[0018] Optionally, the first conveyor belt is provided with a plurality of first water filtering holes, and the diameter of the first water filtering holes is smaller than the minimum diameter of the coarse aggregate.

[0019] Optionally, the air-drying mechanism includes a first air-dryer arranged between two receiving surfaces of the first conveyor belt, the air outlet end of the first air-dryer faces the receiving surface of the upper layer of the first conveyor belt, and acts on the coarse aggregate through the first water filter hole.

[0020] Optionally, the air-drying mechanism further includes a guide plate arranged on the first conveyor belt, the guide plate is obliquely supported on the first conveyor belt, a plurality of notches are provided on the surface of the guide plate supported on the first conveyor belt, part of the coarse aggregate on the first conveyor belt moves to the guide plate through the notches, a third conveyor belt for conveying coarse aggregate is provided on the guide plate, the air-drying mechanism further includes a second air-dryer arranged in the guide plate and a second water filter hole provided on the third conveyor belt, the second air-dryer acts on the coarse aggregate through the second water filter hole. A plurality of blocks are provided at intervals on the end surface of the guide plate supported on the first conveyor belt, the gaps between adjacent blocks form notches, the blocks are slidably provided at the end of the guide plate, the blocks slide along the length direction of the guide plate, and a second driving member for driving the blocks to slide is provided on the guide plate Optionally, the end surface of the guide plate supported on the first conveyor belt is provided with a plurality of blocks at intervals, the gaps between adjacent blocks form a notch, the block is slidably provided at the end of the guide plate, the block slides along the length direction of the guide plate, and a second driving member for driving the block to slide is provided on the guide plate.

[0021] Optionally, an inclined block is provided between the guide plate and the stop block, one end of the inclined block is connected to the guide plate, and the other end of the inclined block is connected to the stop block.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. During concrete preparation, the first conveyor belt conveys coarse aggregate, and the second conveyor belt conveys fine aggregate. After the second conveyor belt conveys the fine aggregate to the first conveyor belt, the first conveyor belt conveys the fine aggregate to the temporary storage bin, and then to the mixer. When the coarse aggregate is conveyed on the first conveyor belt, it first passes through the cleaning mechanism, which rinses the coarse aggregate. The rinsed coarse aggregate is conveyed to the air-drying mechanism, which dries it. After the coarse aggregate is rinsed, the mud content and water content of the coarse aggregate are greatly reduced, thereby improving the preparation quality of concrete; 2. After the coarse aggregate is flushed, the flushing water flows along the inclined direction of the first conveyor belt, making it easier to separate from the coarse aggregate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of a concrete aggregate conveying system according to an embodiment of the present application; Figure 2 This is a structural schematic diagram of a cleaning mechanism in a concrete aggregate conveying system according to an embodiment of the present application; Figure 3 It is a structural schematic diagram of a drying mechanism in a concrete aggregate conveying system in an embodiment of the present application.

[0024] Description of reference numerals: 1. coarse aggregate bin; 2. first conveyor belt; 3. fine aggregate bin; 4. second conveyor belt; 5. Cleaning mechanism; 51. Cleaning box; 52. First flushing pipe; 53. First nozzle; 54. Second flushing pipe; 55. Second nozzle; 56. First motor; 57. Cleaning roller; 58. Brush; 59. Second motor; 6. air drying mechanism; 61. first air drying machine; 62. guide plate; 63. third conveyor belt; 64. second water filter hole; 7. First water filter hole; 8. Notch; 9. Stopper; 10. Electric push rod. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-3 This application is described in further detail.

[0026] The present application embodiment discloses a concrete aggregate conveying system. Figure 1 The concrete aggregate conveying system includes a horizontal conveyor belt located below the silo, the horizontal conveyor belt includes a first conveyor belt 2 located below the coarse aggregate silo 1 and a second conveyor belt 4 located below the fine aggregate silo 3, the second conveyor belt 4 is located above the first conveyor belt 2, the discharging end of the second conveyor belt 4 is located on the first conveyor belt 2, and the first conveyor belt 2 is provided with a cleaning mechanism 5 and an air-drying mechanism 6, the cleaning mechanism 5 is used to flush the aggregate, and the air-drying mechanism 6 is used to air-dry the flushed aggregate; when preparing concrete, the first conveyor belt 2 conveys the coarse aggregate, and the second conveyor belt 4 conveys the fine aggregate, after the second conveyor belt 4 conveys the fine aggregate to the first conveyor belt 2, the fine aggregate is then conveyed to the temporary storage bin by the first conveyor belt 2, and then conveyed to the mixer, when the coarse aggregate is conveyed on the first conveyor belt 2, it first passes through the cleaning mechanism 5, the cleaning mechanism 5 flushes the coarse aggregate, and the flushed coarse aggregate is conveyed to the air-drying mechanism 6, and is air-dried by the air-drying mechanism 6, after the coarse aggregate is flushed, the mud content and water content of the coarse aggregate are greatly reduced, thereby improving the preparation quality of concrete Reference Figure 1In order to facilitate the separation of flushing water and coarse aggregate, the first conveyor belt 2 is inclined, and the height of the discharge end of the first conveyor belt 2 is greater than the height of the feed end so that the flushing water flows along the first conveyor belt 2 and is separated from the first conveyor belt 2; after the coarse aggregate is flushed, the flushing water flows along the inclined direction of the first conveyor belt 2, which is convenient for separation from the coarse aggregate.

[0027] Reference Figure 2 In the embodiment of the present application, the cleaning mechanism 5 includes a cleaning box 51 that is buckled on the mounting frame of the first conveyor belt 2. Both ends of the cleaning box 51 are opened. The cleaning box 51 is door-shaped in vertical section. The cleaning mechanism 5 also includes a first flushing pipe 52 arranged in the cleaning box 51. A plurality of first nozzles 53 are arranged on the first flushing pipe 52. The plurality of first nozzles 53 are evenly and spacedly arranged along the length direction of the first flushing pipe 52. The first flushing pipe 52 is provided with a plurality of first flushing pipes. The length direction of the first flushing pipe 52 is perpendicular to the length direction of the first conveyor belt 2 and is located above the first conveyor belt 2. The first flushing pipe 52 is located at the top of the cleaning box 51 and is arranged along the length direction of the first conveyor belt 2. The first flushing pipe 52 is connected to an external water source. The external water source enters the first flushing pipe 52 and is then sprayed out by the first nozzle 53. The flushing water sprayed by the first nozzle 53 is washed on the coarse aggregate to wash the coarse aggregate.

[0028] Reference Figure 2 Furthermore, in order to improve the flushing effect on the coarse aggregate, the cleaning mechanism 5 also includes a second flushing pipe 54 arranged on the side wall of the cleaning box 51, and two second flushing pipes 54 are provided and are parallel to each other. A plurality of second nozzles 55 are arranged on the second flushing pipe 54. The length of the second flushing pipe 54 is parallel to the length direction of the first conveyor belt 2. The second nozzle 55 is laterally directed toward the coarse aggregate on the first conveyor belt 2, and the second flushing pipe 54 is connected to an external water source; after the coarse aggregate enters the cleaning box 51, the second flushing pipe 54 sprays flushing water, and the flushing water is sprayed on the side of the coarse aggregate, thereby improving the flushing effect on the coarse aggregate.

[0029] Reference Figure 2 Furthermore, the second flushing pipe 54 is rotatably arranged in the cleaning box 51, and the rotation axis of the second flushing pipe 54 is parallel to the length direction of the first conveyor belt 2. A first driving member for driving the second flushing pipe 54 to reciprocate is arranged in the cleaning box 51. The first driving member includes a first motor 56 arranged in the cleaning box 51, and the second flushing rod is coaxially arranged on the output shaft of the first motor 56; the first motor 56 drives the second flushing pipe 54 to reciprocate within a certain angle, thereby reciprocatingly flushing the coarse aggregate on the first conveyor belt 2, further improving the flushing effect of the coarse aggregate.

[0030] Reference Figure 2Furthermore, a cleaning roller 57 is rotatably arranged in the cleaning box 51, and the length direction of the cleaning roller 57 is parallel to the length direction of the first flushing pipe 52. A brush 58 is arranged on the cleaning roller 57, and the end of the brush 58 abuts against the conveying surface of the first conveyor belt 2. A second motor 59 is arranged on the outer side of the cleaning box 51, and the cleaning roller 57 is coaxially arranged on the output shaft of the second motor 59; when the coarse aggregate is conveyed on the first conveyor belt 2, the second motor 59 is started, and the second motor 59 drives the cleaning roller 57 to rotate, and the rotation of the cleaning roller 57 drives the brush 58 to rotate, and the brush 58 rotates to brush the coarse aggregate, thereby facilitating the separation of soil and gravel; further, the cleaning roller 57 drives the brush 58 to rotate, and the rotation of the brush 58 acts on the coarse aggregate, so that the coarse aggregate rolls on the first conveyor belt 2, thereby facilitating the adjustment of the flushing position of the coarse aggregate, and further improving the flushing effect of the coarse aggregate.

[0031] Reference Figure 2 and Figure 3 In the embodiment of the present application, the first conveyor belt 2 is provided with a plurality of first water filter holes 7, and the diameter of the first water filter hole 7 is smaller than the minimum diameter of the coarse aggregate; after the coarse aggregate is flushed, part of the flushing water flows along the first conveyor belt 2, and the rest drips along the first water filter hole 7, thereby facilitating the separation of the coarse aggregate and the flushing water.

[0032] Reference Figure 2 and Figure 3 In the embodiment of the present application, the air-drying mechanism 6 includes a first air-dryer 61 arranged between the two receiving surfaces of the first conveyor belt 2. An electric heating wire is arranged in the first air-dryer 61. The air outlet end of the first air-dryer 61 faces the receiving surface of the upper layer of the first conveyor belt 2, and acts on the coarse aggregate through the first water filter hole 7. When drying the coarse aggregate, the first air-dryer 61 dries the coarse aggregate, and the operation is simple and convenient.

[0033] Reference Figure 2 and Figure 3 In order to further improve the air-drying effect of the coarse aggregate, the air-drying mechanism 6 also includes a guide plate 62 arranged on the first conveyor belt 2, the guide plate 62 is obliquely supported on the first conveyor belt 2, and a plurality of notches 8 are opened on the surface of the guide plate 62 supported on the first conveyor belt 2. Part of the coarse aggregate on the first conveyor belt 2 moves to the guide plate 62 through the notch 8, and a third conveyor belt 63 for conveying the coarse aggregate is arranged on the guide plate 62. The air-drying mechanism 6 also includes a second air-dryer arranged in the guide plate 62 and a second water filter hole 64 opened on the third conveyor belt 63, and the second air-dryer acts on the coarse aggregate through the second water filter hole 64; when the first conveyor belt 2 transports the coarse aggregate, part of the coarse aggregate passes through the guide plate 62 along the notch 8, and the rest of the coarse aggregate passes along the guide plate 62 to the third conveyor belt 63, and the coarse aggregate entering the third conveyor belt 63 is air-dried by the second air-dryer. In the above process, the coarse aggregate is diverted and the thickness of the coarse aggregate is reduced, thereby improving the air-drying effect of the coarse aggregate.

[0034] Reference Figure 2 and Figure 3 Furthermore, a plurality of blocks 9 are arranged at intervals on the end surface of the guide plate 62 supported on the first conveyor belt 2, and gaps 8 are formed between adjacent blocks 9. The block 9 is slidably arranged at the end of the guide plate 62, and the block 9 slides along the length direction of the guide plate 62. A second driving member for driving the block 9 to slide is arranged on the guide plate 62, and the second driving member includes two electric push rods 10 arranged in the guide plate 62, and mounting rods are arranged on the output shafts of the two electric push rods 10. The block 9 arranged at intervals is fixedly arranged on the mounting rods respectively; the electric push rods 10 are started, and the electric push rods 10 drive the mounting rods to slide, and the sliding of the mounting rods drives the block 9 to slide, and the block 9 arranged at intervals slides respectively, thereby adjusting the path of the coarse aggregate to move to the guide plate 62, thereby separating the coarse aggregate on the third conveyor belt 63, and further improving the drying effect of the coarse aggregate.

[0035] Reference Figure 2 and Figure 3 Furthermore, an inclined block is provided between the guide plate 62 and the stopper 9, one end of the inclined block is connected to the guide plate 62, and the other end is connected to the stopper 9; under the action of the inclined block, the coarse aggregate is conveniently moved to the guide plate 62 through the first conveyor belt 2.

[0036] The implementation principle of a concrete aggregate conveying system in the embodiment of the present application is: During concrete preparation, the first conveyor belt 2 conveys coarse aggregate, and the second conveyor belt 4 conveys fine aggregate. After the second conveyor belt 4 conveys the fine aggregate to the first conveyor belt 2, the first conveyor belt 2 conveys the fine aggregate to a temporary storage bin, and then to a mixer. When the coarse aggregate is transported on the first conveyor belt 2, it is first rinsed through the first rinse pipe 52 and the second rinse pipe 54. The rinsed coarse aggregate is air-dried through the first dryer and the second dryer. After being rinsed, the mud content and water content of the coarse aggregate are greatly reduced, thereby improving the preparation quality of concrete.

[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A concrete aggregate conveying system, Features: The invention comprises a horizontal conveyor belt located below a silo, wherein the horizontal conveyor belt comprises a first conveyor belt (2) located below a coarse aggregate silo (1) and a second conveyor belt (4) located below a fine aggregate silo (3), wherein the second conveyor belt (4) is located above the first conveyor belt (2), wherein the discharge end of the second conveyor belt (4) is located on the first conveyor belt (2), and wherein a cleaning mechanism (5) and an air-drying mechanism (6) are provided on the first conveyor belt (2), wherein the cleaning mechanism (5) is used for flushing aggregates, and the air-drying mechanism (6) is used for air-drying the flushed aggregates; the first conveyor belt (2) is arranged at an angle, wherein the height of the discharge end of the first conveyor belt (2) is greater than the height of the feed end, so that flushing water flows along the first conveyor belt (2) and is separated from the first conveyor belt (2).

2. A concrete aggregate conveying system according to claim 1, Features: The cleaning mechanism (5) comprises a cleaning box (51) which is buckled on a mounting frame of the first conveyor belt (2), and both ends of the cleaning box (51) are opened. The cleaning mechanism (5) also comprises a first flushing pipe (52) arranged in the cleaning box (51), and a plurality of first nozzles (53) are arranged on the first flushing pipe (52). The first flushing pipe (52) is provided with a plurality of first flushing nozzles. The length direction of the first flushing pipe (52) is perpendicular to the length direction of the first conveyor belt (2) and is located above the first conveyor belt (2). The first flushing pipe (52) is located at the top of the cleaning box (51) and is arranged along the length direction of the first conveyor belt (2). The first flushing pipe (52) is connected to an external water source.

3. A concrete aggregate conveying system according to claim 2, Features: The cleaning mechanism (5) further comprises a second flushing pipe (54) arranged on the side wall of the cleaning box (51), a plurality of second nozzles (55) being arranged on the second flushing pipe (54), the length of the second flushing pipe (54) being parallel to the length direction of the first conveyor belt (2), the second nozzles (55) being laterally directed toward the coarse aggregate on the first conveyor belt (2), and the second flushing pipe (54) being connected to an external water source.

4. A concrete aggregate conveying system according to claim 3, Features: The second flushing pipe (54) is rotatably arranged in the cleaning box (51), the rotation axis of the second flushing pipe (54) is parallel to the length direction of the first conveyor belt (2), and a first driving member for driving the second flushing pipe (54) to reciprocate is arranged in the cleaning box (51).

5. A concrete aggregate conveying system according to claim 2, Features: A cleaning roller (57) is rotatably arranged in the cleaning box (51), the length direction of the cleaning roller (57) is parallel to the length direction of the first flushing pipe (52), and a brush (58) is arranged on the cleaning roller (57), the end of the brush (58) abuts against the conveying surface of the first conveyor belt (2).

6. A concrete aggregate conveying system according to any one of claims 1 to 5, Features: The first conveyor belt (2) is provided with a plurality of first water filtering holes (7), and the diameter of the first water filtering holes (7) is smaller than the minimum diameter of the coarse aggregate.

7. A concrete aggregate conveying system according to claim 6, Features: The air drying mechanism (6) comprises a first air dryer (61) arranged between two receiving surfaces of the first conveyor belt (2), wherein the air outlet end of the first air dryer (61) faces the receiving surface of the upper layer of the first conveyor belt (2) and acts on the coarse aggregate through the first water filter hole (7).

8. A concrete aggregate conveying system according to claim 7, Features: The air-drying mechanism (6) further comprises a guide plate (62) arranged on the first conveyor belt (2), the guide plate (62) being obliquely supported on the first conveyor belt (2), a plurality of notches (8) being provided on the surface of the guide plate (62) supported on the first conveyor belt (2), part of the coarse aggregate on the first conveyor belt (2) passing through the notches (8) is moved to the guide plate (62), a third conveyor belt (63) for conveying the coarse aggregate is provided on the guide plate (62), the air-drying mechanism (6) further comprises a second air-dryer arranged in the guide plate (62) and a second water filter hole (64) provided on the third conveyor belt (63), the second air-dryer acting on the coarse aggregate through the second water filter hole (64).

9. A concrete aggregate conveying system according to claim 8, Features: The end surface of the guide plate (62) supported on the first conveyor belt (2) is provided with a plurality of stoppers (9) at intervals, the gaps between adjacent stoppers (9) form a notch (8), the stoppers (9) are slidably arranged at the end of the guide plate (62), the stoppers (9) slide along the length direction of the guide plate (62), and the guide plate (62) is provided with a second driving member for driving the stoppers (9) to slide.

10. A concrete aggregate conveying system according to claim 9, Features: An inclined block is provided between the guide plate (62) and the stopper (9), one end of the inclined block being connected to the guide plate (62) and the other end being connected to the stopper (9).

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