Pre-screening mechanism for garbage crushing

Abstract

The utility model discloses a pre-screening mechanism for garbage crushing, which relates to the field of pre-screening before construction garbage crushing and comprises a vibration box, two screens are mounted in the vibration box, and the mesh number of the upper screen is smaller than that of the lower screen. A coarse material outlet is formed in the position, located at one end of the upper screen, of one end of the vibration box, an electric push cylinder is installed on one side of the outer portion of the coarse material outlet, and the output end of the electric push cylinder is connected with a discharging mechanism movably connected with the coarse material outlet. Upper supporting legs are installed at the four corners of the bottom end of the vibration box, and lower supporting legs making contact with the ground are installed at the bottom ends of the upper supporting legs through vibration mechanisms. According to the utility model, the discharging mechanism is arranged, and the discharging mechanism can control the feeding speed and time of coarse materials, so that the problem caused by continuous feeding of the coarse materials to the jaw crusher is avoided.

Description

Technical Field

[0001] The utility model relates to the field of pre-screening of construction waste before crushing, in particular to a pre-screening mechanism for crushing waste. Background Art

[0002] When buildings are demolished, a large amount of construction waste is generated. After crushing and screening these construction wastes, aggregates that can be reused can be obtained. The crushing process is divided into coarse crushing, medium crushing, and fine crushing, gradually reducing the particle size of the material to reach a usable range.

[0003] In the existing technology, the newly recycled construction waste is mixed with materials of different sizes (because: before the construction waste is crushed, the steel bars contained in the concrete are separated by hammering, which will cause the size of the concrete construction waste to be quite different). Therefore, it is necessary to screen and sort the concrete construction waste according to its particle size to facilitate the operation;

[0004] Generally, coarse materials are directly discharged into the jaw crusher for crushing. However, the jaw crusher requires a certain amount of time in the crushing process. Continuous feeding can easily lead to blockage of the jaw crusher or a decrease in crushing efficiency. Utility Model Content

[0005] The purpose of the present utility model is to provide a pre-screening mechanism for garbage crushing in order to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a pre-screening mechanism for garbage crushing, comprising a vibration box, wherein two screens are installed inside the vibration box, wherein the mesh size of the upper screen is smaller than that of the other screen below, and a coarse material outlet is installed at one end of the vibration box located above the end of the screen, and an electric push cylinder is installed on the outer side of the coarse material outlet, and the output end of the electric push cylinder is connected to a discharge mechanism movably connected to the coarse material outlet;

[0007] Upper legs are installed at the four corners of the bottom end of the vibration box, and lower legs in contact with the ground are installed at the bottom ends of the upper legs through a vibration mechanism.

[0008] As a further solution of the present invention: the discharging mechanism includes a slider slidably connected to the top of the two side plates of the coarse material outlet, the two sliders are fixedly connected by a synchronization rod, and one of the sliders is fixedly connected to the output end of the electric push cylinder, and the vertical extension height of the part of the slider located on the inner side of the coarse material outlet is greater than the height of the part of the slider located on the outer side of the coarse material outlet.

[0009] As a further solution of the present invention: the discharging mechanism also includes a rotating shaft rotatably installed between the two side plates of the coarse material outlet, and baffles are integrally formed directly below and directly above the outer wall of the rotating shaft. The end of the baffle located below is fixedly connected to a limiting column, and a limiting groove for the rotation of the limiting column is opened inside the coarse material outlet.

[0010] As a further solution of the present invention: the vibration mechanism includes a fixed plate fixed to the bottom end of the upper support leg and the top of the lower support leg, and the bottom end of the upper fixed plate is integrally formed with a guide column extending downward, and the guide column is connected to the fixed plate located below for upward and downward sliding, and a vibration spring is fixedly connected between the two fixed plates.

[0011] As a further solution of the present invention: a vibration motor is installed below the bottom end plate of the vibration box, and the vibration motor is electrically connected to an external power supply through a switch.

[0012] As a further solution of the present invention: a medium material outlet is installed at one end of the vibration box and located below one end of the screen, and a fine material outlet is installed at one end of the vibration box and located at one end of the bottom plate of the vibration box.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. By setting up the discharging mechanism, the discharging mechanism can control the feeding speed and time of coarse materials, thereby avoiding the problems caused by continuous feeding of coarse materials to the jaw crusher. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 For the utility model Figure 2 A partial enlarged view of the middle part;

[0018] Figure 4 This is a structural diagram of the discharging mechanism of the present utility model.

[0019] In the figure: 1. Vibration box; 2. Upper support leg; 3. Lower support leg; 4. Screen; 5. Medium material outlet; 6. Fine material outlet; 7. Coarse material outlet; 8. Electric push cylinder; 9. Slider; 10. Synchronous rod; 11. Rotating shaft; 12. Baffle; 13. Limiting column; 14. Limiting slot; 15. Vibration motor; 16. Guide column; 17. Vibration spring; 18. Fixed plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1 to 4 In an embodiment of the present invention, a pre-screening mechanism for garbage crushing includes a vibration box 1. Two screens 4 are installed inside the vibration box 1. The mesh size of the upper screen 4 is smaller than that of the other screen 4 below. A coarse material outlet 7 is installed at one end of the vibration box 1 located at the end of the upper screen 4. An electric push cylinder 8 is installed on the outer side of the coarse material outlet 7. The output end of the electric push cylinder 8 is connected to a discharging mechanism movably connected to the coarse material outlet 7; upper support legs 2 are installed at the four corners of the bottom end of the vibration box 1, and the bottom end of the upper support leg 2 is installed with a lower support leg 3 in contact with the ground through a vibration mechanism.

[0022] In this embodiment, construction waste (such as concrete blocks) is first poured into the vibration box 1 from the end away from the coarse material outlet 7, and the device is powered on. After that, the construction waste is vibrated, and the coarse material, medium material, and lower material in the construction waste are separated into layers under the screening of the two screens 4. Construction waste with meshes larger than the mesh size of the upper screen 4 slides toward the coarse material outlet 7 under the guidance of the upper screen 4, and slides into the jaw crusher through the coarse material outlet 7. The feed port of the jaw crusher is aligned with the output port of the coarse material outlet 7 in the vertical direction.

[0023] Since it takes a certain amount of time for the jaw crusher to crush concrete construction waste, when there is a lot of coarse material falling into the jaw crusher, in order to avoid too much coarse material entering the jaw crusher, the electric push cylinder 8 is started at this time, and the electric push cylinder 8 drives the discharging mechanism to operate and close the coarse material outlet 7 to prevent subsequent coarse material from falling directly into the jaw crusher, thereby controlling the feeding effect.

[0024] Please refer to Figure 1 、 Figure 2 and Figure 4The discharging mechanism includes a slider 9 slidably connected to the top of the two side plates of the coarse material outlet 7. The two sliders 9 are fixedly connected by a synchronization rod 10, and one slider 9 is fixedly connected to the output end of the electric push cylinder 8. The vertical extension height of the slider 9 located on the inner side of the coarse material outlet 7 is greater than the height of the slider 9 located on the outer side of the coarse material outlet 7. The discharging mechanism also includes a rotating shaft 11 rotatably installed between the two side plates of the coarse material outlet 7. Baffles 12 are integrally formed directly below and directly above the outer wall of the rotating shaft 11. The end of the baffle 12 located below is fixedly connected to a limiting column 13. A limiting groove 14 for the limiting column 13 to rotate is provided inside the coarse material outlet 7.

[0025] In this embodiment: when there is a lot of material in the jaw crusher, the electric push cylinder 8 is started at this time, and the slider 9 at the output end of the electric push cylinder 8 pushes the slider 9 to slide, and the slider 9 drives the other slider 9 to slide synchronously through the synchronization rod 10. At this time, the vertical parts inside the two sliders 9 push the baffle 12 located above, and the baffle 12 is forced to drive the rotating shaft 11 and the baffle 12 below to rotate synchronously, and the baffle 12 located below drives the limiting column 13 to slide in the limiting groove 14 until the baffle 12 below closes the coarse material outlet 7. When it is necessary to add material to the jaw crusher again, the electric push cylinder 8 is controlled to shorten, and the electric push cylinder 8 drives the two sliders 9 to reset. At this time, the two baffles 12 lose their limiting force. At this time, under the squeezing of the sliding coarse material, the baffle 12 below rotates and opens autonomously, realizing the addition of coarse material to the jaw crusher.

[0026] Please refer to Figure 1 、 Figure 2 and Figure 3 The vibration mechanism includes a fixed plate 18 fixed to the bottom end of the upper leg 2 and the top of the lower leg 3. The bottom end of the upper fixed plate 18 is integrally formed with a downwardly extending guide column 16. The guide column 16 is connected to the fixed plate 18 located below for vertical sliding connection. A vibration spring 17 is fixedly connected between the two fixed plates 18. A vibration motor 15 is installed below the bottom end plate of the vibration box 1, and the vibration motor 15 is electrically connected to an external power supply through a switch.

[0027] In this embodiment: by starting the vibration motor 15, the vibration generated by the vibration motor 15 during operation acts on the vibration box 1. At this time, the vibration box 1 drives the fixed plate 18 at the bottom end of the upper leg 2 to vibrate up and down. During this process, the guide column 16 and the fixed plate 18 located below slide relative to each other, and the vibration spring 17 is compressed and reset back and forth, thereby achieving a vibration screening effect and achieving a better screening effect.

[0028] Please refer to Figure 1 and Figure 2 A medium material outlet 5 is installed at one end of the vibration box 1 and at one end of the screen 4 below, and a fine material outlet 6 is installed at one end of the vibration box 1 and at one end of the bottom plate of the vibration box 1.

[0029] In this embodiment, the medium material and the fine material pass through the upper screen 4 and fall onto the upper portion of the lower screen 4, and the fine material passes through the lower screen 4 again and falls onto the bottom plate of the vibration box 1, and then the fine material and the coarse material are discharged from the fine material outlet 6 and the medium material outlet 5 respectively.

[0030] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pre-screening mechanism for garbage crushing, comprising a vibration box (1), wherein two screens (4) are installed inside the vibration box (1), wherein the mesh size of the upper screen (4) is smaller than that of the lower screen (4), and wherein: One end of the vibration box (1) is located above one end of the screen (4) and is provided with a coarse material outlet (7). An electric push cylinder (8) is provided on the outer side of the coarse material outlet (7). The output end of the electric push cylinder (8) is connected to a discharging mechanism movably connected to the coarse material outlet (7). Upper legs (2) are installed at the four corners of the bottom end of the vibration box (1), and lower legs (3) in contact with the ground are installed at the bottom ends of the upper legs (2) through a vibration mechanism.

2. A pre-screening mechanism for garbage crushing according to claim 1, characterized in that: The discharging mechanism comprises a slider (9) slidably connected to the top of the two side plates of the coarse material outlet (7), the two sliders (9) are fixedly connected via a synchronization rod (10), and one of the sliders (9) is fixedly connected to the output end of the electric push cylinder (8), and the vertical extension height of the portion of the slider (9) located inside the coarse material outlet (7) is greater than the height of the portion of the slider (9) located outside the coarse material outlet (7).

3. A pre-screening mechanism for garbage crushing according to claim 2, characterized in that: The discharging mechanism further comprises a rotating shaft (11) rotatably mounted between the two side plates of the coarse material outlet (7), baffles (12) are integrally formed directly below and directly above the outer wall of the rotating shaft (11), the end of the baffle (12) located below is fixedly connected to a limiting column (13), and a limiting groove (14) for the limiting column (13) to rotate is provided inside the coarse material outlet (7).

4. A pre-screening mechanism for garbage crushing according to claim 3, characterized in that: The vibration mechanism includes a fixing plate (18) fixed to the bottom end of the upper leg (2) and the top of the lower leg (3); a guide column (16) extending downward is integrally formed at the bottom end of the fixing plate (18) located above; the guide column (16) is connected to the fixing plate (18) located below in an upward and downward sliding manner; and a vibration spring (17) is fixedly connected between the two fixing plates (18).

5. A pre-screening mechanism for garbage crushing according to claim 1, characterized in that: A vibration motor (15) is installed below the bottom end plate of the vibration box (1), and the vibration motor (15) is electrically connected to an external power supply through a switch.

6. A pre-screening mechanism for garbage crushing according to claim 5, characterized in that: A medium material outlet (5) is installed at one end of the vibration box (1) and located below one end of the screen (4), and a fine material outlet (6) is installed at one end of the vibration box (1) and located at one end of the bottom end plate of the vibration box (1).

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