Coal crushing device

Abstract

The utility model relates to the technical field of coal processing, in particular to a coal smashing device which comprises a base and a box body located on the base, feeding cavities are symmetrically arranged on the left side face and the right side face of the upper portion of the box body, a baffle is movably connected to an inlet of each feeding cavity, and a check block for preventing the baffle from rotating outwards is arranged on the inner wall of the feeding cavity at the lower end of the baffle. A pair of smashing rollers is installed in the middle section in the box body, a screening mechanism is arranged in the box body below the smashing rollers, a discharging port is formed in the bottom face of the box body, a discharging cavity is formed in the discharging port, the base comprises a bottom plate, and a through hole allowing the discharging cavity to penetrate through is formed in the bottom plate. The baffle is movably connected to the inlet of the feeding cavity, the baffle is limited to turn outwards through the check block, fragments cannot be splashed out of the device during smashing, flying dust generated during smashing is effectively avoided, and the fragments are prevented from splashing; the electric telescopic rod is matched with the screening box, the screening box is driven to move back and forth through stretching and retracting of the electric telescopic rod, the smashed coal is preliminarily screened, and the coal quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal processing technical field especially a coal crushing device. BACKGROUND

[0002] Before processing coal, it often needs to be crushed due to its too large particles. A coal ore crushing device is disclosed in a Chinese patent with publication number CN216826443U. When the rolling cylinder is pressed against the preliminarily crushed coal, the second motor drives the threaded pillar and moves the moving block, and the sliding block connected to one end of the moving frame slides in the sliding groove, ensuring stability, so as to drive the moving frame to move back and forth above the workbench, so that the rolling cylinder repeatedly rolls the coal inside the placement box, crushing the large particles in the coal, and facilitating subsequent coal processing. Although the device solves the problem of too many large particles in the preliminarily crushed coal that is not conducive to subsequent processing, it still has the problem of splashing during the crushing process, which poses a safety hazard. SUMMARY

[0003] The technical problem to be solved by the utility model is to solve the problems of the prior art in the background art and provide a coal crushing device.

[0004] The utility model adopts the technical scheme that a coal crushing device comprises a base and a box body located on the base, the upper part of the box body is symmetrically provided with a feeding cavity on the left and right side surfaces, a baffle is movably connected to the inlet of the feeding cavity, a blocking block is arranged on the inner wall of the feeding cavity at the lower end of the baffle to block the outward rotation of the baffle, a pair of crushing rollers are installed in the middle segment of the box body, a screening mechanism is arranged in the box body below the crushing rollers, a discharge port is formed in the bottom surface of the box body, a discharge cavity is arranged on the discharge port, the base comprises a bottom plate and supporting legs, and a through hole is formed in the bottom plate for the discharge cavity to pass through.

[0005] Further, the screening mechanism comprises a sieve box arranged through the left and right side surfaces of the lower part of the box body, the bottom surface of the sieve box is a filter screen, notches are formed in the left and right side walls of the sieve box, a sieve frame is inserted into the notches, there is a certain distance between the sieve frame and the filter screen, a limiting protrusion is formed on the top of the left and right side surfaces of the sieve box, a carabiner is arranged below the limiting protrusion, the carabiner is connected to the output end of an electric telescopic rod, and the electric telescopic rod is installed on the bottom plate.

[0006] Further, the sieve frame is composed of a left side surface, a front side surface, a right side surface and a bottom surface, and sieve holes are formed in the bottom surface.

[0007] Further, a flap is movably connected to the position corresponding to the sieve frame at the lower part of the front door of the box body.

[0008] Further, the electric telescopic rod is externally provided with a protective cover, and the protective cover is provided with a gap for the push rod of the electric telescopic rod to extend out.

[0009] Further, one end of the pulverizing roller is provided with a motor, and the motors connected with the two pulverizing rollers are respectively arranged on the left and right side surfaces of the box body.

[0010] Further, the upper portion of the front side surface of the box body is provided with a control box, and the motor and the electric telescopic rod are electrically connected with the control box.

[0011] Further, the inner wall of the feeding cavity is provided with a rotary connecting head near the inlet, and the upper end of the baffle is pinned or riveted with the rotary connecting head.

[0012] Further, the supporting leg comprises an upper supporting column and a lower supporting column, the inner side wall of the upper supporting column is provided with a supporting rod connected with the bottom plate, and the diameter of the lower supporting column is greater than that of the upper supporting column.

[0013] Further, the bottom of the lower supporting column is provided with an antiskid pad.

[0014] The utility model discloses the beneficial effect: the utility model discloses a baffle is movably connected on the inlet of the feeding cavity, and the baffle is limited to turn outwards by the stopper, so that the broken block during the pulverization cannot splash to the device, and the pulverization dust is effectively avoided to prevent the broken block from splashing, the electric telescopic rod is cooperated with the sieve box, the sieve box is driven to move back and forth by the telescopic electric telescopic rod, and the coal after pulverization is preliminarily screened, and the coal quality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model is further illustrated below in connection with the drawings and examples.

[0016] Figure 1 It is the structure schematic diagram of the utility model.

[0017] Figure 2 It is Figure 1 the sectional view.

[0018] Figure 3 It is Figure 2 the enlarged structure schematic diagram of A in the utility model.

[0019] Figure 4 It is Figure 2 the enlarged structure schematic diagram of B in the utility model.

[0020] Figure 5 It is the structure schematic diagram of the sieve frame in the utility model.

[0021] In the figure: 1, box; 11, feed cavity; 12, baffle; 13, stop block; 14, discharge cavity; 15, flap; 16, rotary joint; 2, base; 21, bottom plate; 22, leg; 221, upper support column; 222, lower support column; 223, support rod; 224, non-slip pad; 3, crushing roller; 4, screening mechanism; 41, sieve box; 411, filter screen; 412, limiting protrusion; 413, carabiner; 42, sieve frame; 43, electric telescopic rod; 44, protective cover; 5, control box; 6, motor. DETAILED DESCRIPTION

[0022] The utility model will be explained in further detail now in combination with the drawings. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the utility model in a schematic manner, so they only show the components related to the utility model.

[0023] As shown in Figure 1 and Figure 2 A coal crushing device, comprising a base 2 and a box 1 located on the base 2, the upper left and right sides of the box 1 are symmetrically provided with a feed cavity 11, a baffle 12 is movably connected to the inlet of the feed cavity 11, a stop block 13 is arranged on the inner wall of the feed cavity 11 at the lower end of the baffle 12 to prevent the baffle 12 from rotating outward, a pair of crushing rollers 3 are installed in the middle of the box 1, a screening mechanism 4 is arranged in the box 1 below the crushing rollers 3, a discharge port is formed in the bottom surface of the box 1, and a discharge cavity 14 is arranged on the discharge port, the base 2 comprises a bottom plate 21 and a leg 22, and a through hole is formed in the bottom plate 21 for the discharge cavity 14 to pass through.

[0024] In this embodiment, the controller 5 is a PLC controller, and the model of the controller can be S7-200. A flap 15 is movably connected to the position corresponding to the sieve frame 42 in the screening mechanism 4 at the lower part of the front side door of the box 1. A motor 6 is installed at one end of the crushing roller 3, and the motors 6 connected to the two crushing rollers 3 are installed on the left and right sides of the box 1, respectively. The motor 6 is electrically connected with the control box 5. The leg 22 comprises an upper support column 221 and a lower support column 222, a support rod 223 is arranged on the inner side wall of the upper support column 221 and connected with the bottom plate 21, the diameter of the lower support column 222 is greater than that of the upper support column 221, and a non-slip pad 224 is arranged at the bottom of the lower support column 222.

[0025] Preferably, a rotary joint 16 is arranged on the inner wall of the feed cavity 11 close to the inlet, and the upper end of the baffle 12 is pinned or riveted with the rotary joint 16.

[0026] As shown in Figure 2 and Figure 4As shown, the screening mechanism 4 includes a sieve box 41 arranged through the left and right side surfaces of the lower part of the box body 1, the bottom surface of the sieve box 41 is a filter screen 411, a gap is formed on the left and right side walls of the sieve box 41, a sieve frame 42 is inserted into the gap, there is a certain distance between the sieve frame 42 and the filter screen 411, the left and right side surfaces of the sieve box 41 are protruded at the top to form a limiting protrusion 412, a hook ring 413 is arranged below the limiting protrusion 412, the hook ring 413 is connected with the output end of an electric telescopic rod 43, the electric telescopic rod 43 is installed on the bottom plate 21, and the electric telescopic rod 43 is electrically connected with the control box 5. Specifically, a protective cover 44 is arranged outside the electric telescopic rod 43, and a gap is formed on the protective cover 44 for the push rod of the electric telescopic rod 43 to extend out.

[0027] As shown in the Figure 5 sieve frame 42 is composed of a left side surface, a front side surface, a right side surface and a bottom surface, sieve holes are formed on the bottom surface, that is, the crushed pieces after being crushed by the crushing roller 3 are first screened by the sieve frame 42, and then filtered by the filter screen 411, so the aperture of the sieve holes is generally larger than the aperture of the mesh holes of the filter screen 411.

[0028] Specific operation: first, connect the device to the power supply to ensure that the device can be used normally, and the coal pieces of different sizes are transmitted to the feeding cavity 11 through the transmission frame, the baffle 12 is turned inward with the rotary connecting head 16 as the center, the coal pieces enter the inside of the box body 1, the controller controls the motor 6 to rotate, and the opposite rotation of the pair of crushing rollers 3 crushes the coal pieces, and due to the existence of the stop block 13, the outward turning of the baffle 12 is limited, so that the crushed pieces will not splash out of the device, effectively avoiding dust generated during crushing and preventing the pieces from splashing; at the same time, the controller controls one electric telescopic rod 43 to extend the push rod and the other electric telescopic rod 43 to retract the push rod, drives the sieve box 41 and the sieve frame 42 to move together, and preliminarily screens the crushed coal, improves the quality, and the screened pieces are filtered by the filter screen 411 and then discharged and collected; during cleaning, the electric telescopic rod 43 is controlled to reset, the flap 15 is turned open, and the sieve frame 42 is extracted to complete the collection, and the internal cleaning is facilitated.

[0029] Based on the above ideal embodiments of the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical concept of the present application. The technical scope of the present application is not limited to the content in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A coal crushing device, comprising a base (2) and a box (1) located on the base (2), characterized in that: The upper left and right sides of the box (1) are symmetrically provided with feeding cavities (11), a baffle (12) is movably connected to the inlet of the feeding cavity (11), a blocking block (13) is arranged on the inner wall of the feeding cavity (11) at the lower end of the baffle (12) to prevent the baffle (12) from rotating outward, a pair of crushing rollers (3) are installed in the middle of the box (1), a screening mechanism (4) is arranged in the box (1) below the crushing roller (3), a discharge port is formed in the bottom surface of the box (1), and a discharge cavity (14) is arranged on the discharge port, the base (2) comprises a bottom plate (21) and supporting legs (22), and a through hole is formed in the bottom plate (21) for the discharge cavity (14) to pass through.

2. The coal pulverizing device according to claim 1, characterized by: The screening mechanism (4) comprises a sieve box (41) arranged through the left and right sides of the lower part of the box (1), the bottom surface of the sieve box (41) is a filter screen (411), notches are formed in the left and right side walls of the sieve box (41), a sieve frame (42) is inserted into the notches, there is a certain distance between the sieve frame (42) and the filter screen (411), limit protrusions (412) are formed on the top of the left and right side surfaces of the sieve box (41), and hook rings (413) are arranged below the limit protrusions (412), the hook rings (413) are connected with the output end of an electric telescopic rod (43), and the electric telescopic rod (43) is installed on the bottom plate (21).

3. The coal pulverizing device according to claim 2, characterized by: The sieve frame (42) is composed of a left side, a front side, a right side and a bottom surface, and sieve holes are formed in the bottom surface.

4. The coal pulverizing device according to claim 2 or 3, characterized by: A flap (15) is movably connected to the position corresponding to the sieve frame (42) at the lower part of the front side door of the box (1).

5. The coal pulverizing device according to claim 2, characterized by: A protective cover (44) is arranged outside the electric telescopic rod (43), and notches are formed in the protective cover (44) for the push rod of the electric telescopic rod (43) to extend out.

6. The coal pulverizing device according to claim 5, characterized by: A motor (6) is installed at one end of the crushing roller (3), and the motors (6) connected with the two crushing rollers (3) are installed on the left and right side surfaces of the box (1) respectively.

7. The coal pulverizing device according to claim 6, characterized by: A control box (5) is arranged on the upper part of the front side of the box (1), and the motor (6) and the electric telescopic rod (43) are electrically connected with the control box (5).

8. The coal pulverizing device according to claim 1, characterized by: A rotary joint (16) is arranged on the inner wall of the feeding cavity (11) close to the inlet, and the upper end of the baffle (12) is pinned or riveted with the rotary joint (16).

9. The coal pulverizing device according to claim 1, characterized by: The supporting leg (22) comprises an upper support column (221) and a lower support column (222), a supporting rod (223) connected with the bottom plate (21) is arranged on the inner side wall of the upper support column (221), and the diameter of the lower support column (222) is greater than that of the upper support column (221).

10. The coal pulverizing device according to claim 9, characterized by: An antiskid pad (224) is arranged at the bottom of the lower support column (222).

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