Aggregate multi-stage screening device

Abstract

The application discloses an aggregate multistage screening device, which comprises a mounting base, a screening part for screening aggregate is arranged on the upper end face of the mounting base, discharging structures for discharging aggregate are arranged on the two sides of the screening part, the screening part comprises a screening box for screening aggregate particles in stages, the screening box comprises a bottom plate, baffle plates are arranged on the two sides of the bottom plate, a partition plate is arranged on the bottom plate, the two ends of the partition plate are mounted on the baffle plates, and door bodies for discharging aggregate are arranged on the baffle plates. The device is different from the conventional way of screening aggregate by using holes. The device realizes the screening of aggregate by changing the size of the gap between the partition plate and the bottom plate, and a stirring rod is arranged to stir the aggregate during the screening process, so that the clogging during the screening process can be effectively avoided. The device can adjust the screening grade of the aggregate by adjusting the number of the partition plates, so that the screening is more accurate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aggregate screening, in particular to an aggregate multi-stage screening device. BACKGROUND

[0002] Concrete is a commonly used material in construction, and its main components are cement, sand, aggregate and water. The aggregate is one of the main components of concrete, and its quality directly affects the performance and service life of concrete. Therefore, in the production process of concrete, the aggregate screening technology is particularly important. Aggregate screening refers to the screening and grading of aggregate to separate aggregate of different particle sizes to meet the requirements of concrete preparation.

[0003] The method of aggregate screening mainly includes

[0004] 1. Mechanical screening method: the mechanical screening method is to use mechanical equipment to screen aggregate, mainly including circular vibrating screen and linear vibrating screen. The circular vibrating screen is usually used for small and medium-sized concrete production lines, and the linear vibrating screen is suitable for large-scale concrete production lines.

[0005] 2. Water washing screening method: the water washing screening method is to use the scouring action of water to separate aggregate into different particle size grades. This method is suitable for aggregate with high mud content and can effectively remove the mud and impurities on the surface of the aggregate.

[0006] 3. Airflow screening method: the airflow screening method is to use the power of airflow to separate aggregate into different particle size grades. This method is suitable for aggregate with low water content and can control the particle size distribution.

[0007] 4. Manual screening method: the manual screening method is to use manual screening of aggregate, which is generally used for small-scale concrete production lines.

[0008] Among them, the commonly used is the mechanical screening method, which can efficiently separate aggregate of different particle sizes, but the size of the screen hole is limited and cannot well control the particle size distribution. SUMMARY

[0009] The present application provides an aggregate multi-stage screening device to solve the technical problem that the existing mechanical screening method can efficiently separate aggregate of different particle sizes, but the size of the screen hole is limited and cannot well control the particle size distribution.

[0010] The technical scheme adopted by the present application is that: a mounting base is provided, a screening part for aggregate screening is installed on the upper end face of the mounting base, a discharge structure for discharging aggregate is arranged on both sides of the screening part, the screening part comprises a screening box for screening aggregate particles in stages, the screening box comprises a bottom plate, baffles are arranged on both sides of the bottom plate, a partition plate is arranged on the bottom plate, the partition plate is installed on the baffles at both ends, and a door body for discharging aggregate is arranged on the baffle.

[0011] Further, the upper end of the door body is movably mounted on the baffle.

[0012] Further, the lower end of the door body is movably mounted on the baffle.

[0013] Further, the screening box further comprises a locking part for fixing the state of the door body, the locking part is mounted on the baffle, the locking part comprises a stop rod for limiting the door body, both sides of the stop rod are provided with sliding racks for limiting the movement track of the stop rod, the sliding racks are fixedly mounted on the baffle, the sliding racks are provided with grooves, both ends of the stop rod are mounted in the grooves, and a hook body for accommodating the stop rod is arranged below the stop rod.

[0014] Further, the screening part further comprises a stirring part for stirring the aggregate, the stirring part comprises a stirring rod, the higher end of the stirring rod is a collecting end, and the lower end of the stirring rod is a discharging end, the upper end of the stirring rod is provided with an extension frame, the extension frame is slidably mounted on the partition plate, and a friction wheel is mounted on the extension frame.

[0015] Further, the stirring rod is in a tubular structure, and the two ends of the stirring rod are provided with screen meshes.

[0016] Further, the bottom plate is mounted on the upper end surface of the mounting base through a support, and the upper end surface of the mounting base is provided with a drainage box for guiding the small-particle aggregate.

[0017] Further, the discharging end of the stirring rod is provided with a sliding baffle.

[0018] Further, the door body position of the baffle is provided with a drainage structure, the drainage structure comprises a drainage sleeve mounted on the baffle, and the drainage sleeve is provided with an opening for avoiding the opening and closing of the door body.

[0019] Further, the mounting base comprises a base body, and the base body is provided with a groove for placing the collecting box.

[0020] The beneficial effects of the present application are as follows:

[0021] The device is different from the conventional method of screening aggregate by using holes. The device realizes the screening of aggregate by changing the size of the gap between the partition plate and the bottom plate, and the stirring rod stirs the aggregate during the screening process, so that the clogging during the screening process can be effectively avoided.

[0022] The device can adjust the screening grade of the aggregate by setting the number of partition plates, so that the screening is more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic view of the multi-stage aggregate screening device.

[0024] Figure 2 is a structural schematic diagram of the mounting base of the present application;

[0025] Figure 3 is a structural schematic diagram of the screening part of the present application;

[0026] Figure 4 is a structural schematic diagram of the screening box of the present application;

[0027] Figure 5 is a cross-sectional structural schematic diagram of the screening box of the present application;

[0028] Figure 6 is a structural schematic diagram of the locking part of the present application;

[0029] Figure 7 is a structural schematic diagram of the pushing part of the present application;

[0030] Figure 8 is a structural schematic diagram of the discharge structure of the present application;

[0031] In the figure: mounting base 1; base body 11; groove 12; screening part 2; support 21; screening box 22; bottom plate 221; baffle 222; partition 223; door body 224; locking part 23; sliding carriage 231; stop lever 232; hook body 233; pushing part 24; pushing lever 241; screen 242; extension frame 243; friction wheel 244; sliding baffle 245; drainage box 25; discharge structure 3; drainage sleeve 31; opening 32. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments.

[0033] Embodiment 1

[0034] This embodiment discloses a multi-stage aggregate screening device, which combines Figure 1 As shown in the figure, a multi-stage aggregate screening device includes a mounting base 1, which is placed on the ground and fixed on the ground by means of bolts. The upper end surface of the mounting base 1 is provided with a screening part 2 for aggregate screening. The screening part 2 is inclined and arranged. The two sides of the screening part 2 are provided with a discharge structure 3 for discharging aggregate. The discharge structure 3 includes a drainage sleeve 31 and an opening 32. The drainage sleeve 31 is arranged on the two sides of the screening part 2, and the opening 32 is arranged on the drainage sleeve 31. Figures 3-6As shown, the screening part 2 comprises a screening box 22 for step-by-step screening of aggregate particle size, the screening box 22 comprises a bottom plate 221 which is a square long strip plate structure, the bottom plate 221 is inclined, both sides of the bottom plate 221 are provided with baffles 222, the bottom plate 221 is provided with partitions 223 in the direction from high to low, both ends of the partitions 223 are mounted on the baffles 222, which can be fixedly connected by welding or bolt connection, the partitions 223 are not less than two, a gap is left between the partitions 223 and the bottom plate 211, the gap decreases from high to low of the bottom plate 221, thereby ensuring that the aggregate is screened from large to small in turn, the baffles 222 are provided with door bodies 224 for aggregate discharge, the door bodies 224 are mounted on the baffles 222 by shaft or hinge, the door bodies 224 can freely rotate on the baffles 222, the rotation of the door bodies 224 realizes the conversion of the closed and open states of the baffles 222, the lower section of the door bodies 224 is located in the same plane as the partitions 223, the upper end of the door bodies 224 is movably mounted on the baffles 222, in this way, in the process of aggregate discharge, the door bodies 224 are opened by applying a pushing force to the aggregate, realizing the discharge of the aggregate, when the discharge of the aggregate is completed, the door bodies 224 can be automatically closed by their own gravity, which facilitates the closing of the baffles 222, in order to realize the stability of the closing of the baffles 222 by the door bodies 224, the screening box 22 further comprises a locking part 23 for fixing the state of the door bodies 224, the locking part 23 is mounted on the baffles 222, the locking part 23 comprises a stop rod 232 for limiting the door bodies 224, the stop rod 232 is a long strip, the length of the stop rod 232 can cover all the door bodies 224, both sides of the stop rod 232 are provided with carriages 231 for limiting the movement track of the stop rod 232, the carriages 231 are fixedly mounted on the baffles 222, the carriages 231 are provided with grooves, both ends of the stop rod 232 are mounted in the grooves, the stop rod 232 can freely slide in the grooves, when the stop rod 232 slides to the highest position of the grooves, the stop rod 232 can be separated from the door bodies 224, realizing the function of releasing the door bodies 224 for discharging, in order to achieve more stable fixing effect of the door bodies 224, a hook body 233 for accommodating the stop rod 232 is arranged below the stop rod 232, the hook body 233 is L-shaped, one end of the hook body 233 is fixedly mounted on the baffles 222.

[0035] Example 2

[0036] On the basis of example 1, the difference between this example and example 1 is only in the mounting position of the door bodies 224 and the partitions 223, in this example, the lower end of the door bodies 224 is movably mounted on the baffles 222, in this way, when the aggregate needs to be discharged, the door bodies 224 can be fully opened, making the aggregate discharge more efficient and the discharge capacity larger.

[0037] Example 3

[0038] Based on Example 1 or Example 2, combined with Figures 3-7 As shown, in this embodiment, the screening section 2 further includes a actuating section 24 for agitating the aggregate. The actuating section 24 is located in the gap between the partition plate 223 and the bottom plate 211. The actuating section 23 can slide freely within the gap. The actuating section 24 includes an actuating rod 241, with the higher end of the actuating rod 241 being the collection end and the lower end being the discharge end. The actuating rod 241 is a long, stepped strip to accommodate gaps of different heights. An extension frame 243 is provided at the upper end of the actuating rod 241. The extension frame 243 is fixedly installed on the actuating rod 241, and its installation method can be welding or screw connection. The extension frame 243 is slidably installed on the partition plate 223. The portion of 223 is C-shaped. Utilizing this C-shape, the actuating lever 241 only undergoes horizontal displacement. To facilitate the driving of the actuating lever 241, the C-shaped portion of the extension frame 243 has a groove. A friction wheel 244 is installed in the groove of the extension frame 243, and a matching motor is coaxially mounted on the friction wheel 244. The matching motor easily drives the friction wheel 244, thereby driving the actuating lever 241. The actuating lever 241 has a tubular structure with screens 242 at both ends. The screens 242 allow small aggregate particles to enter the actuating lever 241. To ensure more thorough screening of small aggregate particles, the actuating lever 241... The upper and side surfaces of the actuating rod 241, located between two adjacent partitions 223, are equipped with screens 242. During the movement of the actuating rod 241, small aggregate particles enter the actuating rod 241 through the screens 242 and are discharged through the discharge section of the actuating rod 241. The base plate 221 is mounted on the upper surface of the mounting base 1 via a bracket 21. The mounting method can be fixed by welding or bolt connection. The upper surface of the mounting base 1 is equipped with a guide box 25 for guiding small aggregate particles. The lower end of the actuating rod 241 points to the middle position of the guide box 25. The guide box 25 has a C-shaped structure, and one end of the guide box 25 is fixedly mounted on the lower surface of the base plate 221. The structure is high in the middle and low at both ends, and the bottom surface with the upright plate is higher than the bottom surface of the middle position. Therefore, a flow channel is formed on the bottom surface of the diversion box 25 to achieve the function of aggregate diversion. In order to prevent larger aggregate particles from entering the diversion box 25 during the movement of the actuating rod 241, a sliding baffle 245 is provided at the discharge end of the actuating rod 241. The sliding baffle 245 is a plate-shaped structure, and its length is greater than the width of the bottom plate 221. The sliding baffle 245 is in contact with the bottom plate 221. During the sliding process of the sliding baffle 245, it can block the bottom plate 221 and block the larger aggregate particles, thus preventing the larger aggregate particles from entering the diversion box 25.

[0039] Example 4

[0040] On the basis of Embodiment 3, combined with Figure 2 and Figure 8 As shown in the drawings, in this embodiment, the door body 224 of the baffle 222 is provided with a drainage structure 3, which comprises a drainage sleeve 31 mounted on the baffle 222, which covers the door body 224. During the discharge of the aggregate, the drainage sleeve 31 can limit the discharge position of the aggregate. An opening 32 is arranged on the drainage sleeve 31 to avoid the need to extend into the drainage sleeve 31 to operate the door body 224 when the door body 224 is closed, which facilitates the operation of the door body 224. The mounting base 1 comprises a base body 11, and the base body 11 is provided with grooves 12 for placing the collection box. The grooves 12 are provided with a plurality of grooves 12, which are located below the drainage sleeve 31 and the flow channel discharge position of the drainage box 25.

[0041] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacements or changes within the technical range disclosed by the present application according to the technical solution and the inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A multi-stage aggregate screening device comprising a mounting base (1), a screening section (2) for screening of aggregate is mounted on the upper end surface of the mounting base (1), a discharge structure (3) for discharging of aggregate is arranged on both sides of the screening section (2), characterized in that: The screening part (2) comprises a screening box (22) for screening aggregate particles by size, the screening box (22) comprises a bottom plate (221), both sides of the bottom plate (221) are provided with baffles (222), the bottom plate (221) is provided with a partition plate (223), a gap is left between the partition plate (223) and the bottom plate (221), the gap decreases from high to low in turn, both ends of the partition plate (223) are installed on the baffle (222), and the baffle (222) is provided with a door body (224) for discharging aggregate; The screening box (22) further comprises a locking part (23) for fixing the state of the door body (224), the locking part (23) is installed on the baffle (222), the locking part (23) comprises a stop rod (232) for limiting the door body (224), both sides of the stop rod (232) are provided with a sliding frame (231) for limiting the movement track of the stop rod (232), the sliding frame (231) is fixedly installed on the baffle (222), the sliding frame (231) is provided with a groove, both ends of the stop rod (232) are installed in the groove, and a hook body (233) for accommodating the stop rod (232) is arranged below the stop rod (232); The screening part (2) further comprises a stirring part (24) for stirring aggregate, the stirring part (24) comprises a stirring rod (241), one end of the stirring rod (241) is a collection end, and the other end is a discharge end, the stirring rod (241) is a long strip ladder, and the upper end of the stirring rod (241) is provided with an extension frame (243), the extension frame (243) is slidably installed on the partition plate (223), and a friction wheel (244) is installed on the extension frame (243). The stirring rod (241) is a tubular structure, and the two ends are provided with screen meshes (242).

2. The aggregate multi-stage screening apparatus of claim 1, wherein: The upper end of the door body (224) is movably installed on the baffle (222).

3. The aggregate multi-stage sizing device of claim 1, wherein: The lower end of the door body (224) is movably installed on the baffle (222).

4. The aggregate multi-stage sizing device of claim 1, wherein: The bottom plate (221) is installed on the upper end surface of the mounting base (1) through a support (21), and the upper end surface of the mounting base (1) is provided with a drainage box (25) for guiding small-particle aggregate.

5. The aggregate multi-stage sizing device of claim 1, wherein: The discharge end of the stirring rod (241) is provided with a sliding baffle (245).

6. The aggregate multi-stage sizing device of claim 1, wherein: The position of the door body (224) of the baffle (222) is provided with a discharge structure (3), the discharge structure (3) comprises a drainage sleeve (31) installed on the baffle (222), and the drainage sleeve (31) is provided with an opening (32) for avoiding opening and closing of the door body (224).

7. The aggregate multi-stage sizing device of claim 1, wherein: The mounting base (1) comprises a base body (11), and the base body (11) is provided with a groove (12) for placing a collection box.

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