Gravel crushing and screening device

Abstract

The utility model relates to the field of sandstone processing equipment, and discloses a sandstone crushing and screening device which comprises a crusher, a screen and an arc-shaped baffle, the crusher is installed in a concrete brick wall, and a material leakage cavity located below the crusher is formed in the concrete brick wall; the first end of the screen is hinged to the side wall below a discharging opening of the crusher and used for screening materials crushed by the crusher, and the second end of the screen is erected on a lifting mechanism so as to drive the second end of the screen to swing up and down; the arc-shaped baffle is installed at the inner top of the material leakage cavity, the axis of the arc-shaped baffle and the swing axis of the screen are collinear, the arc-shaped surface of the arc-shaped baffle is divided into a first arc-shaped surface, a second arc-shaped surface and a third arc-shaped surface from top to bottom, and the second arc-shaped surface and the third arc-shaped surface are each provided with a plurality of strip-shaped seams used for discharging coarse materials; the gravel crushing and screening device is compact in structure and high in screening efficiency.

Description

Technical Field

[0001] The utility model relates to the field of sand and stone processing equipment, in particular to a sand and stone crushing device. Background Art

[0002] Gravel made from crushed sand and stone is a common construction material in the construction field. After the sand and stone crushing equipment crushes the sand and stone, the crushed particles generated are of different sizes. The crushed particles exceeding a certain size need to be sent back to the crusher for secondary crushing. At present, most sand and stone crushers do not have the screening function. The sand and stone particles crushed by the crusher need to be transported to the screening equipment by a conveyor belt structure, and then the unqualified coarse material after screening is sent back to the sand and stone crusher through a conveyor belt for secondary crushing. As a result, the entire sand and stone crushing and screening production line occupies a large area.

[0003] In view of this, it is necessary to provide a sand and gravel crushing device with compact structure and high working efficiency. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the background technology and provide.

[0005] The embodiments of the present invention are implemented by the following technical solutions:

[0006] A sand and stone crushing and screening device, comprising:

[0007] A crusher is installed in a concrete brick wall, wherein a material leakage cavity is provided below the crusher in the concrete brick wall;

[0008] A screen, a first end of which is hinged to a side wall below the discharge port of the crusher for screening the material crushed by the crusher, and a second end of which is mounted on a set of lifting mechanisms to drive the second end of the screen to swing up and down; and

[0009] An arc-shaped baffle is installed on the inner top of the leakage chamber, and the axis of the arc-shaped baffle is colinear with the swing axis of the screen. The arc-shaped surface of the arc-shaped baffle is divided into a first arc-shaped surface, a second arc-shaped surface and a third arc-shaped surface from top to bottom, wherein the second arc-shaped surface and the third arc-shaped surface are both provided with a plurality of strip slits for discharging coarse materials.

[0010] Furthermore, the width of the strip-shaped slit on the second arc-shaped surface is smaller than the width of the strip-shaped slit on the third arc-shaped surface.

[0011] Furthermore, the lifting mechanism is a set of scissor lift platforms.

[0012] Furthermore, the scissor lift platform is also provided with a vibration generating mechanism for vibrating the screen.

[0013] Furthermore, the vibration generating mechanism includes a motor and a cam drivingly connected to the motor via a pulley mechanism, and the cam abuts against the lower end surface of the screen.

[0014] Furthermore, an extension portion is provided at the second end of the screen, and the cam abuts against directly below the extension portion; an arc-shaped shell is provided on the outer wall of the vibration generating mechanism for guiding out the coarse material that slides out of the extension portion.

[0015] Furthermore, the leakage material chamber includes a fine material chamber located below the screen and a coarse material chamber located below the side of the screen.

[0016] Furthermore, the screen is provided with strip holes for penetrating the arc-shaped baffle, and the screen is also provided with frames located on both sides of the strip holes.

[0017] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0018] In the sand and stone crushing and screening device of the utility model, the crusher is installed in a concrete brick wall, and a leakage cavity is arranged below the crusher in the wall. The leakage cavity directly screens the material screened by the crusher through a group of screens, and the structure is compact; and through the lifting and lowering of the lifting mechanism, different arc-shaped area surfaces on the arc-shaped baffle can be made to contact with the screen, when the first arc-shaped surface contacts with the screen, the material is screened, and when the second arc-shaped surface and the third arc-shaped surface contact with the screen, coarse materials with different particle sizes can be poured out from the upper end of the screen along the strip-shaped seam, and the screening efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of the sand and gravel crushing and screening device of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the screen of the utility model;

[0021] Figure 3 It is a schematic diagram of the assembly relationship between the screen and the arc-shaped baffle of the utility model;

[0022] Icons: 1-concrete brick wall, 10-leakage cavity, 100-fine material cavity, 101-coarse material cavity, 2-crusher, 20-discharge port, 3-screen, 30-strip hole, 31-extension part, 32-frame, 4-arc baffle, 40-first arc surface, 41-second arc surface, 42-third arc surface, 43-strip seam, 5-lifting mechanism, 6-vibration generating mechanism, 60-motor, 61-cam, 63-arc shell. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Reference Figures 1 to 3 The utility model discloses a sand and stone crushing and screening device, which comprises a concrete brick wall 1, a crusher 2, a screen 3, an arc baffle 4, a lifting mechanism 5 and a vibration generating mechanism 6.

[0025] The concrete brick wall 1 is used to install the crusher 2 and the screen 3 . The crusher 2 is installed in the concrete brick wall 1 . A material leakage cavity 10 located below the crusher 2 is provided in the concrete brick wall 1 .

[0026] Reference Figure 1 The first end of the screen 3 is hinged on the side wall below the discharge port 20 of the crusher 2 to screen the material crushed by the crusher 2. The second end of the screen 3 is mounted on a set of lifting mechanisms 5 to drive the second end of the screen 3 to swing up and down; wherein, the leakage cavity 10 includes a fine material cavity 100 located below the screen 3 and a coarse material cavity 101 located below the side of the screen 3, that is, the screen 3 leaks the fine material in the crushed material into the fine material cavity 100 below, and the coarse material on the screen 3 can be introduced into the outer coarse material cavity 101 along the inclined surface of the screen.

[0027] During the screening process of the screen 3, the arc baffle 4 is used to prevent the material to be screened from falling into the coarse material chamber 101 on the side, that is, the top of the arc baffle 4 is installed on the inner top of the leakage chamber 10 by bolts, wherein the central axis of the arc baffle 4 is colinear with the swing axis of the screen 3. Therefore, the process in which the lifting mechanism 5 drives the second end of the screen 3 to rise and fall is actually the process in which the screen 3 swings around the hinge point. During this process, the arc baffle 4 will not hinder the swing of the screen 3.

[0028] Reference Figure 2 The screen 3 is provided with strip holes 30 for penetrating the arc-shaped baffle 4, and the screen 3 is also provided with frames 32 located on both sides of the strip holes 30.

[0029] Reference Figure 3 The arc surface of the arc baffle 4 is divided into a first arc surface 40, a second arc surface 41 and a third arc surface 42 of equal width from top to bottom, wherein the second arc surface 41 and the third arc surface 42 are both provided with a plurality of strip slits 43 for discharging coarse materials, and the width of the strip slits 43 on the second arc surface 41 is smaller than the width of the strip slits 43 on the third arc surface 42.

[0030] In this embodiment, the lifting mechanism 5 is a set of scissor lift platforms, and may also be a hydraulic lift platform or other structures.

[0031] During the screening process of the screen 3, the lifting mechanism 5 drives the screen 3 to the highest position. At this time, the first curved surface 40 contacts the screen 3, and the fine material, which accounts for the vast majority of the material, falls along the screen 3 into the fine material chamber 100 below, and the coarse material is accumulated on the screen 3. During the screening interval, the lifting mechanism 5 descends to a certain height to make the second curved surface 41 contact the screen 3, and the coarse material with a small proportion and a smaller diameter on the screen 3 is guided out along the strip slit 43 to the coarse material chamber 101. After the coarse material with a smaller diameter is transported away from the coarse material chamber 101, the lifting mechanism 5 continues to descend, and the coarse material with an even smaller proportion and a larger diameter on the screen 3 is guided out along the strip slit 43 to the coarse material chamber 101, so as to facilitate classification and recovery.

[0032] Reference Figure 1 In addition, the scissors lift platform is also provided with a vibration generating mechanism 6 for vibrating the screen 3. The vibration generating mechanism 6 includes a motor 60 and a cam 61 driven and connected to the motor 60 through a pulley mechanism. The cam 61 abuts against the lower end surface of the extension portion 31 of the screen 3. The outer wall of the vibration generating mechanism 6 is also provided with an arc-shaped shell 63 for guiding the coarse material sliding out of the extension portion 31 to prevent the material from entering the vibration generating mechanism 6.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sand and stone crushing and screening device, characterized in that: include: A crusher (2) is installed in a concrete brick wall (1), wherein a material leakage chamber (10) is provided in the concrete brick wall (1) and is located below the crusher (2); A screen (3) having a first end hinged to a side wall below a discharge port (20) of the crusher (2) for screening materials crushed by the crusher (2); a second end of the screen (3) being mounted on a set of lifting mechanisms (5) for driving the second end of the screen (3) to swing up and down; as well as An arc-shaped baffle (4) is installed at the inner top of the leakage chamber (10), and the axis of the arc-shaped baffle (4) is colinear with the swing axis of the screen (3). The arc-shaped surface of the arc-shaped baffle (4) is divided into a first arc-shaped surface (40), a second arc-shaped surface (41) and a third arc-shaped surface (42) from top to bottom, wherein the second arc-shaped surface (41) and the third arc-shaped surface (42) are both provided with a plurality of strip slits (43) for discharging coarse materials.

2. The sand and stone crushing and screening device according to claim 1, characterized in that: The width of the strip-shaped slit (43) on the second arc-shaped surface (41) is smaller than the width of the strip-shaped slit (43) on the third arc-shaped surface (42).

3. The sand and stone crushing and screening device according to claim 1 or 2, characterized in that: The lifting mechanism (5) is a set of scissor lift platforms.

4. The sand and stone crushing and screening device according to claim 3, characterized in that: The scissor lift platform is also provided with a vibration generating mechanism (6) for vibrating the screen (3).

5. The sand and stone crushing and screening device according to claim 4, characterized in that: The vibration generating mechanism (6) comprises a motor (60) and a cam (61) drivingly connected to the motor (60) via a pulley mechanism, and the cam (61) abuts against the lower end surface of the screen (3).

6. The sand and stone crushing and screening device according to claim 5, characterized in that: The second end of the screen (3) is also provided with an extension portion (31), and the cam (61) is against the bottom of the extension portion (31); the outer wall of the vibration generating mechanism (6) is also provided with an arc-shaped shell (63) for guiding out the coarse material that slides out of the extension portion (31).

7. The sand and stone crushing and screening device according to claim 1, characterized in that: The leakage material chamber (10) comprises a fine material chamber (100) located below the screen (3) and a coarse material chamber (101) located below the side of the screen (3).

8. The sand and stone crushing and screening device according to claim 1, characterized in that: The screen (3) is provided with strip holes (30) for penetrating the arc-shaped baffle (4), and the screen (3) is also provided with frames (32) located on both sides of the strip holes (30).

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