Aggregate screening device

Abstract

The utility model relates to an aggregate screening device, and belongs to the technical field of concrete production, the aggregate screening device comprises a box body, two feeding rods are fixed to the upper surface of the box body, a discharging rod is fixed to the lower surface of the box body, bases are fixed to the periphery of the lower surface of the box body, two conveying pipes are fixed to the left side of the box body, and a mounting plate is fixed to the right side of the box body; a screening mechanism is arranged between the mounting plate and the box body; and the screening mechanism comprises a starting assembly, an adjusting assembly and a screening assembly, and the starting assembly comprises a motor fixed to the upper surface of the mounting plate. According to the aggregate screening device, a motor is started to drive a worm and a rotating rod to rotate, a stirring rod is promoted to rotate, aggregate to be screened is stirred and dispersed, aggregate accumulation is avoided, meanwhile, a cleaning plate is driven to move through meshing force, and coarse aggregate located on a screen can be conveyed into a conveying pipe for subsequent collection; and the device can conduct screening more comprehensively, and the screening efficiency is further improved.

Description

Technical Field

[0001] The present application relates to the technical field of concrete production, and in particular to an aggregate screening device. Background Art

[0002] Concrete aggregate refers to the granular loose material that acts as a skeleton or filler in concrete; it is divided into coarse aggregate and fine aggregate; coarse aggregate refers to pebbles, crushed stone, etc., and fine aggregate refers to natural sand, artificial sand, etc. Aggregates with a particle size greater than 4.75mm are called coarse aggregate, commonly known as gravel; commonly used are crushed stone and pebbles. Crushed stone is natural rock or rock made by mechanical crushing and screening. In the existing concrete mixing processing technology, it is necessary to separate the aggregates of concrete, and aggregate screening devices are usually used.

[0003] For example, a Chinese patent (publication number: CN218797121U) discloses an aggregate screening device, which includes a barrel body, a support leg fixedly connected to the bottom of the barrel body, a feed pipe fixedly connected to one side of the barrel body, a feed hopper fixedly connected to the top of the feed pipe, and a discharge pipe fixedly connected to the top of the barrel body away from the feed pipe. A screening mechanism is provided inside the barrel body, and a lifting mechanism is provided inside the screening mechanism, which can realize screening while discharging large-particle aggregates, thereby improving efficiency, and can perform pre-screening when the aggregates enter the screening mechanism to ensure sufficient aggregate screening.

[0004] The above technical solution still has the following defects. Although the aggregate screening device can achieve screening while discharging large-particle aggregates to improve efficiency, and can perform pre-screening when the aggregates enter the screening mechanism to ensure sufficient aggregate screening, in actual use, coarse aggregates and fine aggregates are easily blocked at the feeding corners when feeding, which may cause the device to fail to work normally. Based on this, an aggregate screening device is proposed to solve the above problems. Utility Model Content

[0005] In response to the shortcomings of the existing technology, this application provides an aggregate screening device with advantages such as easy screening, which solves the problem that coarse aggregate and fine aggregate are easily blocked at the feeding corners when they are fed in during actual use, which may cause the device to be unable to work normally.

[0006] To achieve the above-mentioned objectives, the present application provides the following technical solution: an aggregate screening device, comprising a box body, two feed rods fixed to the upper surface of the box body, a discharge rod fixed to the lower surface of the box body, bases fixed on all four sides of the lower surface of the box body, two conveying pipes fixed to the left side of the box body, a mounting plate fixed to the right side of the box body, and a screening mechanism provided between the mounting plate and the box body;

[0007] The screening mechanism includes a starting component, an adjusting component and a screening component;

[0008] The starting assembly includes a motor fixed to the upper surface of the mounting plate, a worm, a rotating rod, two transmission wheels, a conveyor belt and multiple stirring rods. The output shaft of the motor is fixed to the worm, one end of which passes through the inner cavity of the mounting plate and is rotatably connected to the inner bottom wall of the mounting plate through a bearing. The two transmission wheels are respectively fixed to the outer surfaces of the worm and the rotating rod. A conveyor belt is connected between the two transmission wheels. The multiple stirring rods are fixed to the outer surface of the rotating rod.

[0009] The beneficial effects of adopting a further technical solution are as follows: the screening mechanism facilitates the stirring and dispersion of the aggregate to be screened, thereby avoiding the accumulation of aggregates and facilitating more comprehensive and detailed screening, thereby improving work efficiency.

[0010] Furthermore, one end of the rotating rod is rotatably connected to the inner top wall of the mounting plate through a bearing and the other end passes through the interior of the box. A rotating hole is provided on the upper surface of the box, and the rotating hole is rotatably connected to the rotating rod. A door is hinged on the front of the box.

[0011] The beneficial effect of adopting the further technical solution is that the rotating rod can stably drive the stirring rod to rotate when rotating, thereby dispersing the aggregate.

[0012] Furthermore, the adjustment assembly includes two worm wheels meshing with the worm, two threaded rods, two adjustment blocks, two cleaning plates and two protective plates. The inner wall of the worm wheel axis is fixed to the threaded rod at one end, which is rotatably connected to the right side wall of the mounting plate through a bearing and passes through the other end into the box. The adjustment block is threadedly connected to the outer surface of the threaded rod, the upper surface of the cleaning plate is fixed to the bottom of the adjustment block, and the adjustment block is located inside the protective plate.

[0013] The beneficial effect of adopting a further technical solution is that the threaded rod is driven to rotate by the worm gear, thereby driving the cleaning plate to move.

[0014] Furthermore, the protective plate is fixed between the left and right sides of the inner cavity of the box, and a movable hole is opened on the lower surface of the protective plate. The movable hole is slidingly connected to the adjustment block, and the upper surface of the upper protective plate is rotatably connected to the bottom of the rotating rod.

[0015] The beneficial effect of adopting the further technical solution is that the protective plate provides protection for the adjusting block and the threaded rod, thereby facilitating stable movement of the adjusting block.

[0016] Furthermore, the cross section of the regulating block is convex, the left end of the threaded rod is rotatably connected to the left side wall of the box body, and two threaded strips with the same spiral direction are fixed on the outer surface of the worm.

[0017] The beneficial effect of adopting a further technical solution is that the worm gear is driven to rotate by the worm, thereby facilitating the rotation of the threaded rod and promoting the stable movement of the adjusting block.

[0018] Furthermore, an adjustment hole is opened on the right side of the box body, a sealing ring is fixed to the inner wall of the adjustment hole, and the sealing ring is in contact with the outer surface of the threaded rod.

[0019] The beneficial effect of adopting the further technical solution is to prevent the aggregate to be screened from entering the box and affecting the operation of the device.

[0020] Furthermore, the screening assembly includes two groups of connecting sliders and two screens, and the left and right sides of the screens are fixed to the opposite sides of the two connecting sliders.

[0021] The beneficial effect of adopting the further technical solution is that the coarse and fine aggregates can be screened multiple times through the screen, further improving the screening efficiency.

[0022] Furthermore, sliding grooves are provided on both the left and right sides of the inner cavity of the box body, and the sliding grooves are slidingly connected to the connecting sliders, and the cross-sections of the sliding grooves and the connecting sliders are both convex.

[0023] The beneficial effect of adopting a further technical solution is that the screen can be cleaned and maintained by driving the screen through the chute by connecting the slider.

[0024] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0025] The aggregate screening device starts the motor to drive the worm and the rotating rod to rotate, causing the stirring rod to rotate, stirring and dispersing the aggregate to be screened to avoid aggregate accumulation. At the same time, the meshing force drives the cleaning plate to move, and the coarse aggregate on the screen can be transported to the feed pipe for subsequent collection. It can also enable the device to screen more comprehensively, further improving the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of this application;

[0027] Figure 2 This is a schematic diagram of the front structure of the screening mechanism of this application;

[0028] Figure 3 This is a schematic diagram of the connection structure of the worm and worm wheel in this application.

[0029] In the figure: 1. Box body; 2. Feed rod; 3. Discharge rod; 4. Base; 5. Feed pipe; 6. Mounting plate; 7. Screening mechanism; 701. Motor; 702. Worm; 703. Rotating rod; 704. Conveyor wheel; 705. Conveyor belt; 706. Stirring rod; 707. Worm gear; 708. Threaded rod; 709. Adjusting block; 710. Cleaning plate; 711. Protective plate; 712. Connecting slider; 713. Screen. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0031] See also Figure 1 The aggregate screening device in this embodiment includes a box body 1, two feed rods 2 are fixed on the upper surface of the box body 1, a discharge rod 3 is fixed on the lower surface of the box body 1, a base 4 is fixed on all four sides of the lower surface of the box body 1, two conveying pipes 5 are fixed on the left side of the box body 1, a mounting plate 6 is fixed on the right side of the box body 1, and a screening mechanism 7 is provided between the mounting plate 6 and the box body 1.

[0032] It should be noted that the screening mechanism 7 is used to stir and disperse the aggregate to be screened, thereby avoiding the accumulation of aggregates. At the same time, multiple screening processes can more easily improve the screening efficiency.

[0033] See also Figure 1-3 In order to improve the screening effect of the device, the screening mechanism 7 in this embodiment includes a starting component, an adjusting component and a screening component. The starting component includes a motor 701, a worm 702, a rotating rod 703, two transmission wheels 704, a conveyor belt 705 and a plurality of stirring rods 706 fixed to the upper surface of the mounting plate 6. The output shaft of the motor 701 is fixed to the worm 702 at one end which passes through the inner cavity of the mounting plate 6 and is rotatably connected to the inner bottom wall of the mounting plate 6 through a bearing. The two transmission wheels 704 are respectively fixed to the outer surfaces of the worm 702 and the rotating rod 703. A conveyor belt 705 is transmission-connected between the two transmission wheels 704. The plurality of stirring rods 706 are fixed to the outer surface of the rotating rod 703. The screening mechanism 7 facilitates the stirring and dispersion of the aggregate to be screened to avoid aggregate accumulation, and at the same time facilitates more comprehensive and detailed screening, thereby improving work efficiency.

[0034] Among them, one end of the rotating rod 703 is rotatably connected to the inner top wall of the mounting plate 6 through a bearing and the other end passes through the interior of the box body 1. A rotating hole is provided on the upper surface of the box body 1, and the rotating hole is rotatably connected to the rotating rod 703. The front of the box body 1 is hinged with a box door, so that the rotating rod 703 can stably drive the stirring rod 706 to rotate when rotating to disperse the aggregate.

[0035] At the same time, the adjustment assembly includes two worm wheels 707 meshing with the worm 702, two threaded rods 708, two adjustment blocks 709, two cleaning plates 710 and two protective plates 711. The protective plate 711 is fixed between the left and right sides of the inner cavity of the box body 1. A moving hole is opened on the lower surface of the protective plate 711. The moving hole is slidably connected with the adjustment block 709. The upper surface of the protective plate 711 at the upper end is rotatably connected to the bottom of the rotating rod 703. The protective plate 711 provides protection for the adjustment block 709 and the threaded rod 708, which facilitates the stable movement of the adjustment block 709. The cross-section of the adjustment block 709 is convex, and the left end of the threaded rod 708 rotates with the left side wall of the box body 1. Dynamic connection, the outer surface of the worm 702 is fixed with two threaded strips with the same spiral direction, and the worm gear 707 is driven to rotate by the worm gear 702, which facilitates the rotation of the threaded rod 708, prompting the adjusting block 709 to move stably, and the inner wall of the axis of the worm gear 707 is fixed to the threaded rod 708 with one end being rotatably connected to the right side wall of the mounting plate 6 through a bearing and the other end passing through the box body 1. The adjusting block 709 is threadedly connected to the outer surface of the threaded rod 708, and the upper surface of the cleaning plate 710 is fixed to the bottom of the adjusting block 709. The adjusting block 709 is located inside the protective plate 711, and the threaded rod 708 is driven to rotate by the worm gear 707, thereby driving the cleaning plate 710 to move.

[0036] In addition, an adjustment hole is opened on the right side of the box body 1, and a sealing ring is fixed on the inner wall of the adjustment hole. The sealing ring fits with the outer surface of the threaded rod 708 to prevent the aggregate to be screened from entering the box body 1 and affecting the operation of the device.

[0037] In addition, the screening assembly includes two groups of connecting sliders 712 and two screens 713. The left and right sides of the screens 713 are fixed to the opposite sides of the two connecting sliders 712. Slide grooves are provided on the left and right sides of the inner cavity of the box body 1. The slide grooves and the connecting sliders 712 are slidingly connected. The cross-sections of the slide grooves and the connecting sliders 712 are both convex. The screen 713 is driven to move out or in through the slide groove by the connecting sliders 712, and the screen 713 can be cleaned and maintained. At the same time, the screen 713 can screen coarse and fine aggregates multiple times, further improving the screening efficiency.

[0038] In this embodiment, the starting component provides power to the regulating component and disperses and stirs the aggregate, and then the regulating component cooperates with the screening component to screen the aggregate to be screened multiple times, thereby improving the screening effect.

[0039] The electrical components appearing in the text are all electrically connected to the controller and the power supply. The control method of the present invention is controlled by the controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. In addition, the present invention is mainly used to protect mechanical devices, so the control method and circuit connection are no longer explained in detail in the present invention.

[0040] The working principle of the above embodiment is:

[0041] The aggregate to be screened enters the box body 1 through the feed rod 2, and the motor 701 is started at the same time to drive the worm 702 and the transmission wheel 704 to rotate. The transmission wheel 704 drives the rotating rod 703 to rotate through the conveyor belt 705. The rotation of the rotating rod 703 can drive multiple stirring rods 706 to rotate, and then the aggregate to be screened entering the box body 1 can be stirred and dispersed to prevent the aggregate from accumulating on the screen 713, blocking the screen 713, and affecting the screening of the device, thereby further accelerating the screening of coarse and fine aggregates. At this time, the rotation of the worm 702 can drive the worm wheel 707 to rotate, which can prompt the threaded rod 708 to rotate. Rotation, thereby driving the adjustment block 709 to move, which can drive the cleaning plate 710 to move, and then the aggregate on the screen 713 can be screened by the cleaning plate 710, and the coarse aggregate on the screen 713 is transported to the conveying pipe 5 for collection through the movement of the cleaning plate 710. At the same time, after the aggregate to be screened passes through the upper screen 713, it is screened twice again through the cooperation of the cleaning plate 710 and the lower screen 713, so that the device can screen more comprehensively, further improving the screening efficiency. The screen 713 can also be taken out for cleaning by opening the box door through the connecting slider 712.

Claims

1. Aggregate screening device, comprising a box (1), characterized in that: Two feeding rods (2) are fixed to the upper surface of the box body (1), a discharging rod (3) is fixed to the lower surface of the box body (1), bases (4) are fixed around the lower surface of the box body (1), two feeding pipes (5) are fixed to the left side of the box body (1), a mounting plate (6) is fixed to the right side of the box body (1), and a screening mechanism (7) is provided between the mounting plate (6) and the box body (1); The screening mechanism (7) comprises a starting component, an adjusting component and a screening component; The starting assembly comprises a motor (701), a worm (702), a rotating rod (703), two transmission wheels (704), a conveyor belt (705) and a plurality of stirring rods (706) fixed to the upper surface of the mounting plate (6); the output shaft of the motor (701) is fixed to the worm (702) one end of which passes through the inner cavity of the mounting plate (6) and is rotatably connected to the inner bottom wall of the mounting plate (6) through a bearing; the two transmission wheels (704) are respectively fixed to the outer surfaces of the worm (702) and the rotating rod (703); the two transmission wheels (704) are connected to the transmission belt (705) in a transmission manner; and the plurality of stirring rods (706) are fixed to the outer surface of the rotating rod (703).

2. The aggregate screening device according to claim 1, characterized in that: One end of the rotating rod (703) is rotatably connected to the inner top wall of the mounting plate (6) through a bearing and the other end passes through the interior of the box body (1). A rotating hole is provided on the upper surface of the box body (1), and the rotating hole is rotatably connected to the rotating rod (703). A door is hinged on the front of the box body (1).

3. The aggregate screening device according to claim 1, characterized in that: The adjustment assembly comprises two worm wheels (707) meshing with the worm (702), two threaded rods (708), two adjustment blocks (709), two cleaning plates (710) and two protective plates (711), wherein the inner wall of the axis of the worm wheel (707) is fixed to the threaded rod (708) of which one end is rotatably connected to the inner right side wall of the mounting plate (6) through a bearing and the other end extends through the box (1), the adjustment block (709) is threadedly connected to the outer surface of the threaded rod (708), the upper surface of the cleaning plate (710) is fixed to the bottom of the adjustment block (709), and the adjustment block (709) is located inside the protective plate (711).

4. The aggregate screening device according to claim 3, characterized in that: The protective plate (711) is fixed between the left and right sides of the inner cavity of the box body (1). A movable hole is opened on the lower surface of the protective plate (711). The movable hole is slidably connected to the adjustment block (709). The upper surface of the protective plate (711) at the upper end is rotatably connected to the bottom of the rotating rod (703).

5. The aggregate screening device according to claim 3, characterized in that: The cross section of the regulating block (709) is convex, the left end of the threaded rod (708) is rotatably connected to the left side wall of the box (1), and two threaded strips with the same spiral direction are fixed to the outer surface of the worm (702).

6. The aggregate screening device according to claim 3, characterized in that: An adjustment hole is provided on the right side of the box body (1), and a sealing ring is fixed to the inner wall of the adjustment hole, and the sealing ring is in contact with the outer surface of the threaded rod (708).

7. The aggregate screening device according to claim 1, characterized in that: The screening assembly comprises two groups of connecting sliders (712) and two screens (713), and the left and right sides of the screens (713) are fixed to the opposite sides of the two connecting sliders (712).

8. The aggregate screening device according to claim 7, characterized in that: Slide grooves are provided on both the left and right sides of the inner cavity of the box body (1), and the slide grooves are slidably connected to the connecting slider (712). The cross sections of the slide grooves and the connecting slider (712) are both convex.

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