Coal gangue crusher

Abstract

The invention provides a coal gangue crusher, and belongs to the technical field of coal field geological exploration. The coal gangue crusher comprises a jaw type crushing body and a feeding hopper arranged at the top end of the jaw type crushing body, a feeding port is formed in one side of the feeding hopper, a discharging port is formed in the bottom end of the feeding hopper, a horizontal anti-blocking frame is arranged in the feeding hopper, and a large feeding channel and multiple rows of small feeding channels are arranged on the surface of the horizontal anti-blocking frame. The large feeding channels penetrate through the horizontal anti-blocking frame in the axial direction, every two adjacent rows of small feeding channels are distributed in the axial direction of the horizontal anti-blocking frame in a staggered mode, the small feeding channels are used for allowing small coal gangue to pass through, the two ends of the horizontal anti-blocking frame are rotationally matched with the two side walls of the feeding hopper, and a power device for driving the horizontal anti-blocking frame to rotate is arranged at the top end of the feeding hopper. And when the horizontal anti-blocking frame rotates, the large feeding channel and the small feeding channel pass through the feeding port from bottom to top. The coal gangue pre-crushing device has the advantages of blockage prevention, coal gangue pre-crushing, long service life and high stability.

Description

Technical Field

[0001] The invention relates to the technical field of coalfield geological exploration, and in particular to a coal gangue crusher. Background Art

[0002] Coalfield geological exploration refers to the systematic work of identifying the distribution, thickness, structure, coal quality and mining geological conditions of coal seams through geological surveys, geophysical exploration, drilling, sampling and analysis, and providing a scientific basis for coal mine design, construction and production. In order to ensure the accuracy of coal geological testing, it is necessary to conduct effective chemical experimental analysis on the coal gangue. For example, when testing the composition of coal gangue (such as ash, sulfur, and trace elements), it is necessary to crush it to a certain particle size (such as 80-200 mesh). Since the raw materials of coal gangue are of different sizes after being obtained, in order to effectively complete the chemical experimental analysis, it is necessary to crush the raw materials of coal gangue of various sizes to obtain a large number of effective samples for chemical experimental analysis, so as to ensure the effective implementation of coalfield geological exploration.

[0003] Currently, among the types of coal gangue crushers, jaw crushers are one of the more common devices. In the process of using a jaw crusher to crush coal gangue, small coal gangue can quickly enter the gravel area and be crushed by the fixed jaw plate and the movable jaw plate. However, when the coal gangue is large, it is not convenient to enter the crushing area, resulting in large coal gangue often jumping at the entrance of the gravel area and easily blocking the entrance of the gravel area, resulting in small coal gangue also unable to effectively enter the gravel area for crushing. In view of this, in order to ensure the effective implementation of chemical detection tests in coalfield geological exploration, the present application provides a coal gangue crusher. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention proposes a coal gangue crusher with anti-blocking, pre-crushing and anti-deformation functions, long service life and strong stability.

[0005] The technical solution of the present invention is achieved as follows:

[0006] A coal gangue crusher includes a jaw crushing body and a feed hopper arranged at the top of the jaw crushing body, a feed port is provided on one side of the feed hopper, and the bottom end of the feed hopper is a discharge port. A horizontal anti-blocking frame is provided inside the feed hopper, and a large feed channel and multiple rows of small feed channels are provided on the surface of the horizontal anti-blocking frame. The large feed channel axially penetrates the horizontal anti-blocking frame, and the large feed channel is used for large coal gangue to pass through. The two adjacent rows of small feed channels are staggered in the axial direction of the horizontal anti-blocking frame, and the small feed channels are used for small coal gangue to pass through. The two ends of the horizontal anti-blocking frame are rotatably matched with the two side walls of the feed hopper, and a power device for driving the horizontal anti-blocking frame to rotate is provided on the top of the feed hopper, and when the horizontal anti-blocking frame rotates, the large feed channel and the small feed channel pass through the feed port from bottom to top.

[0007] Furthermore, the horizontal anti-blocking frame includes an end plate, a circumferential rod body and an axial rod body. There are two end plates, which are rotatably mounted on the two side walls of the feed hopper respectively. There are multiple axial rod bodies arranged at equal intervals between the two ends of the large feed channel in the circumferential direction. There are multiple circumferential rod bodies between two adjacent axial rod bodies, and two adjacent circumferential rod bodies cooperate with two axial rod bodies to form a small feed channel. The circumferential rod body has an arc-shaped structure.

[0008] Furthermore, the outer diameter of the circumferential rod body is smaller than the outer diameter of the axial rod body, and the width of the large feed channel is greater than or equal to the width of the feed port.

[0009] Furthermore, the inner top wall of the feed hopper extends inward from the feed port and has a first top surface and a second top surface in sequence, the first top surface is parallel to the inner bottom wall of the feed port, and the first top surface is tilted downward at its inner end, the second top surface is tilted downward at its inner end, and the inclination angle of the second top surface is smaller than the inclination angle of the first top surface, and the inner end of the second top surface is located on the left side above the center of the horizontal anti-blocking frame.

[0010] Furthermore, the outer surface of the axial rod body is provided with first protrusions distributed at equal intervals, and the first top surface, the second top surface and the inner wall of the feed hopper are all provided with grooves, the radius of the circumferential surface where the bottom end of the second top surface is located is smaller than the circumferential radius where the outer end of the first protrusion is located, and the first protrusion will enter the interior of the groove when passing through the bottom end of the second top surface, and the first protrusion will enter the groove of the side wall of the feed hopper in the direction of the feed port after passing above the discharge port.

[0011] Furthermore, the inner surface of the axial rod is provided with second protrusions distributed at equal intervals, and the second protrusions and the first protrusions located on the same axial rod are symmetrically distributed on both sides inside and outside the axial rod.

[0012] Furthermore, a plurality of displacement plates are provided at the central position of the inner side of the horizontal anti-blocking frame, and a plurality of third protrusions are equidistantly provided on the outer side of the displacement plate. The displacement plates and the axial rod bodies are distributed in a one-to-one correspondence, and a guide seat is provided inside the end plate. The end portions on both sides of the displacement plate slide in cooperation with the guide seat, and when any axial rod body passes under the second top surface, the guide seat enables the displacement plate located on the rear side of the axial rod body to drive the third protrusion to displace outward and cooperate with the axial rod body to crush the coal gangue.

[0013] Furthermore, when the displacement plate is located below the middle of the feed port and in the area inside the second top surface on its circumferential trajectory, the distance between the third protrusion on the displacement plate and the corresponding second protrusion is greater than the size of the small feed channel.

[0014] Furthermore, the third protrusion is an arc-shaped structure concave inward, and the displacement plate includes an axial plate body portion and a radial plate body portion fixedly arranged at both ends of the axial plate body portion. The radial plate body portion is slidably installed on the end plate, and a guide groove is provided on the guide seat, and the inner end of the radial plate body is slidably arranged in the guide groove.

[0015] Furthermore, a support rod is integrally provided on the outer end face of the guide seat, a rod hole is provided at the center of the end plate, the support rod passes through the rod hole outward and is fixedly connected to the feed hopper, and a shaft sleeve is provided on the outer end face of the end plate that is rotatably sleeved outside the support rod, the power device is connected to the shaft sleeve, and the shaft sleeve is rotatably installed on the feed hopper.

[0016] The present invention has the following beneficial effects:

[0017] 1. By setting a feed hopper at the entrance of the jaw crusher body, and setting a horizontal anti-blocking frame in the feed hopper, and setting a large feeding channel and a small feeding channel on the horizontal anti-blocking frame, large coal gangue and small coal gangue can be classified and transported to the entrance of the jaw crusher body separately, preventing a large amount of large coal gangue from accumulating at the entrance of the jaw crusher body, resulting in the inability to effectively feed small coal gangue. It has an anti-blocking function and, at the same time, ensures the crushing efficiency of the jaw crusher body.

[0018] 2. By setting the first protrusion, the second protrusion and the third protrusion, during the rotation of the horizontal anti-blocking frame, the large coal gangue lifted inside and outside the horizontal anti-blocking frame can be crushed, thereby improving the coal gangue crushing efficiency and the anti-blocking performance. In addition, when the inside and outside are crushed simultaneously, the force on the horizontal anti-blocking frame is more balanced, thereby improving the service life and stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the present invention.

[0020] Figure 2 This invention Figure 1 Another perspective of the picture.

[0021] Figure 3 This invention Figure 2 A in the enlarged view.

[0022] Figure 4 It is a schematic diagram of the feed hopper of the present invention.

[0023] Figure 5 It is a schematic diagram of a feed hopper of the present invention after being cut open.

[0024] Figure 6 This invention Figure 5 A partial schematic diagram of .

[0025] Figure 7 It is a schematic diagram of the horizontal anti-blocking frame of the present invention.

[0026] Figure 8 It is a schematic diagram of the support rod, guide seat, displacement plate and third protrusion of the present invention.

[0027] Figure 9 This invention Figure 8 Enlarged view of point B in .

[0028] Figure 10 It is a schematic diagram of the guide groove of the present invention.

[0029] Figure 11 Schematic diagram of the displacement plate and the third protrusion of the present invention.

[0030] In the figure: 1. Jaw crusher body; 2. Feed hopper; 3. Feed port; 4. Horizontal anti-blocking frame; 4.1. End plate; 4.2. Circumferential rod body; 4.3. Axial rod body; 5. Large feed channel; 6. Small feed channel; 7. Power unit; 8. First top surface; 9. Second top surface; 10. First protrusion; 11. Pass groove; 12. Second protrusion; 13. Displacement plate; 13.1. Axial plate body; 13.2. Radial plate body; 14. Third protrusion; 15. Guide seat; 16. Guide groove; 17. Support rod; 18. Bushing. DETAILED DESCRIPTION

[0031] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0032] like Figures 1 to 11As shown, the gangue crusher includes a jaw crushing body 1 and a feed hopper 2 arranged at the top of the jaw crushing body 1, and is characterized in that a feed port 3 is provided on one side of the feed hopper 2, the bottom end of the feed hopper 2 is a discharge port, and a horizontal anti-blocking frame 4 is provided inside the feed hopper 2. The surface of the horizontal anti-blocking frame 4 is provided with a large feed channel 5 and multiple rows of small feed channels 6. The large feed channel 5 axially penetrates the horizontal anti-blocking frame 4, and the large feed channel 5 is used for large gangue to pass through. The two adjacent rows of small feed channels 6 are staggered in the axial direction of the horizontal anti-blocking frame 4, and the small feed channels 6 are used for small gangue to pass through. The two ends of the horizontal anti-blocking frame 4 are rotatably coordinated with the two side walls of the feed hopper 2, and a power device 7 for driving the horizontal anti-blocking frame 4 to rotate is provided on the top of the feed hopper 2. When the horizontal anti-blocking frame 4 rotates, the large feed channel 5 and the small feed channel 6 pass through the feed port 3 from bottom to top.

[0033] When the power device 7 drives the horizontal anti-blocking frame 4 to rotate, the large feed channel 5 and the small feed channel 6 will frequently pass through the feed port 3. When the small feed channel 6 passes through the feed port 3, large coal gangue cannot pass through the horizontal anti-blocking frame 4 and is blocked outside the feed port 3, so that the large coal gangue will not directly enter the jaw crusher body 1, while the small coal gangue will directly pass through the small feed channel 6, pass through the horizontal anti-blocking frame 4, fall into the jaw crusher body and be directly crushed. In addition, the large coal gangue blocked outside the feed port 3 enters the horizontal anti-blocking frame 4 when the large feed channel 5 moves to the side of the feed port 3. When the large feed channel 5 rotates to a downward state, the large coal gangue inside the horizontal anti-blocking frame 4 will fall into the jaw crusher body and be crushed.

[0034] By employing a horizontal anti-blocking frame 4, gangue entering the jaw crusher is sorted and fed separately according to its size. This prevents large amounts of large gangue from concentrating at the jaw crusher's entrance and causing blockage. It also prevents large gangue from concentrating at the jaw crusher's entrance, preventing smaller gangue from effectively entering. This improves the jaw crusher's efficiency in crushing gangue. Furthermore, the horizontal anti-blocking frame 4 disrupts the gangue's downward trajectory, preventing it from striking the jaw crusher when it falls vertically, providing enhanced protection.

[0035] The horizontal anti-blocking frame 4 includes an end plate 4.1, a circumferential rod body 4.2 and an axial rod body 4.3. Two end plates 4.1 are provided, and the two end plates 4.1 are rotatably mounted on the two side walls of the feed hopper 2 respectively. A plurality of axial rod bodies 4.3 are arranged at equal intervals between the two ends of the large feed channel 5 in the circumferential direction. A plurality of circumferential rod bodies 4.2 are arranged between two adjacent axial rod bodies 4.3, and two adjacent circumferential rod bodies 4.2 cooperate with the two axial rod bodies 4.3 to form a small feed channel 6. The circumferential rod body 4.2 has an arc-shaped structure.

[0036] During the rotation of the horizontal anti-blocking frame 4, the coal gangue located in the feed port 3 can be repeatedly pushed up by the axial rod 4.3 that performs circular motion, so that the coal gangue in the feed port 3 frequently moves relative to each other, making it easier for small coal gangue to pass through the horizontal anti-blocking frame 4, thereby ensuring the crushing efficiency of small coal gangue.

[0037] The outer diameter of the circumferential rod 4.2 is smaller than that of the axial rod 4.3, and the width of the large feed channel 5 is greater than or equal to the width of the feed inlet 3. This arrangement causes the outer side of the axial rod 4.3 to be convex relative to the axial rod 4.3, allowing the axial rod 4.3 to better contact the coal gangue at the feed inlet 3, thereby improving the effectiveness of the axial rod 4.3 in pushing up and loosening the coal gangue at the feed inlet 3.

[0038] The inner top wall of the feed hopper 2 extends inward from the feed port 3 and has a first top surface 8 and a second top surface 9 in sequence. The first top surface 8 is parallel to the inner bottom wall of the feed port 3, and the first top surface 8 is tilted downward at its inner end, and the second top surface 9 is tilted downward at its inner end, and the inclination angle of the second top surface 9 is smaller than the inclination angle of the first top surface 8. The inner end of the second top surface 9 is located on the left side above the center of the horizontal anti-blocking frame 4.

[0039] During the rotation of the horizontal anti-blocking frame 4, irregular gangue, after being inserted into the small feed channel 6 at one end, can be carried upward by the horizontal anti-blocking frame 4 to perform circular motion. When the gangue enters between the second top surface 9 and the horizontal anti-blocking frame 4, as the horizontal anti-blocking frame 4 continues to rotate, the gangue will be squeezed and crushed by the horizontal anti-blocking frame 4 and the second top surface 9, which has the effect of pre-crushing large gangue and some small gangue that is not convenient to directly pass through the horizontal anti-blocking frame 4. In addition, the crushed gangue will fall into the horizontal anti-blocking frame 4 through the small feed channel 6, and directly enter the jaw crusher body after passing through the horizontal anti-blocking frame 4.

[0040] The outer surface of the axial rod body 4.3 is provided with first protrusions 10 distributed at equal intervals, and the first top surface 8, the second top surface 9 and the inner wall of the feed hopper 2 are all provided with grooves 11. The radius of the circumferential surface where the bottom end of the second top surface 9 is located is smaller than the circumferential radius where the outer end of the first protrusion 10 is located, and the first protrusion 10 will enter the inside of the groove 11 when passing through the bottom end of the second top surface 9. After passing above the discharge port, the first protrusion 10 will enter the groove 11 on the side wall of the feed hopper 2 in the direction of the feed port 3.

[0041] The gangue stuck in the small feed channel 6 of the horizontal anti-blocking frame 4 is effectively crushed by the cooperation of the first protrusion 10 and the groove 11 as it passes through the first top surface 8 and the second top surface 9. At the same time, during the crushing process, the first protrusion 10 provides better support for the crushed gangue, preventing it from falling during the crushing process. This ensures that the gangue can be fully crushed and pass through the small feed channel 6 and the horizontal anti-blocking frame 4. In addition, the first protrusion 10 provides a better support for the gangue within the feed port 3 as it passes through the feed port 3, enhancing the relative movement between the gangue within the feed port 3 and making the gangue more loose.

[0042] The inner surface of the axial rod 4.3 is provided with equally spaced second protrusions 12. The second protrusions 12 on the same axial rod 4.3 are symmetrically distributed on the inner and outer sides of the axial rod 4.3, along with the first protrusions 10. During the rotation of the horizontal anti-blocking frame 4, the second protrusions 12 provide excellent support for the coal gangue inside the horizontal anti-blocking frame 4, allowing the coal gangue inside the horizontal anti-blocking frame 4 to be lifted and then fall under its own gravity. This allows the coal gangue inside the horizontal anti-blocking frame 4 to pass through the horizontal anti-blocking frame 4 more efficiently without accumulating inside the horizontal anti-blocking frame 4. In addition, the setting of the small feeding channel 6 ensures that the gangue will fall directly onto the gangue at the bottom of the horizontal anti-blocking frame 4 after being lifted up by the second protrusion 12 and then falling, so that the gangue will hit each other, thereby improving the efficiency of gangue crushing and reducing the size of gangue entering the jaw crusher body. At the same time, it also prevents the small feeding channel 6 from being blocked by the gangue located in the horizontal anti-blocking frame 4.

[0043] A plurality of displacement plates 13 are provided at the center position of the inner side of the horizontal anti-blocking frame 4, and a plurality of third protrusions 14 are equidistantly provided on the outer side of the displacement plate 13. The displacement plates 13 and the axial rod bodies 4.3 are distributed in a one-to-one correspondence. A guide seat 15 is provided inside the end plate 4.1. The end portions on both sides of the displacement plate 13 slide in cooperation with the guide seat 15, and when any axial rod body 4.3 passes under the second top surface 9, the guide seat 15 enables the displacement plate 13 on the rear side of the axial rod body 4.3 to drive the third protrusion 14 to move outward and cooperate with the axial rod body 4.3 to crush the coal gangue.

[0044] When one of the axial rods 4.3 passes below the second top surface 9, on the one hand, the first protrusion 10 on the axial rod 4.3 cooperates with the second top surface 9 to crush the coal gangue lifted outside the horizontal anti-blocking frame 4. On the other hand, the displacement plate 13 on the rear side of the axial rod 4.3 displaces outward, causing the third protrusion 14 on the displacement plate 13 to cooperate with the second protrusion 12 on the axial rod 4.3 to crush the coal gangue lifted inside the horizontal anti-blocking frame 4.

[0045] At this time, the coal gangue crushed between the first protrusion and the second top surface 9 outside the horizontal anti-blocking frame 4 and the coal gangue crushed between the second protrusion 12 and the third protrusion 14 inside the horizontal anti-blocking frame 4 are staggered in the front-to-back distribution in the circumferential direction of the horizontal anti-blocking frame 4 and do not interfere with each other. Furthermore, the axial rod 4.3 is simultaneously subjected to extrusion forces in both the front and back directions in the direction of rotation of the horizontal anti-blocking frame 4, making the force on the axial rod 4.3 more balanced. At this time, the axial rod 4.3 is less likely to deform. In addition, the crushed coal gangue is partially inserted into the feed channel 6. During the horizontal anti-blocking crushing process, the axial rod 4.3 is connected to the two circumferential rods 4.2 at both ends of the feed channel 6, giving the axial rod 4.3 greater rigidity and anti-bending properties. Furthermore, the horizontal anti-blocking frame 4 not only has the function of crushing the externally lifted coal gangue by cooperating with the first protrusion 10 and the second top surface 9, but also has the function of crushing the internally lifted coal gangue by cooperating with the second protrusion 12 and the third protrusion 14. In addition, by making the force on the axial rod body 4.3 relatively balanced, the deformation and bending of the axial rod body 4.3 can be better prevented, thereby improving the service life and stability.

[0046] When the displacement plate 13 is located in the area below the middle of the feed port 3 and inside the second top surface 9 on its circumferential trajectory, the distance between the third protrusion 14 on the displacement plate 13 and the corresponding second protrusion 12 is greater than the size of the small feed channel 6. With this arrangement, small-sized coal gangue entering the horizontal anti-blocking frame 4 from the small feed channel 6 in the feed port 3 is smaller than the distance between the third protrusion 14 and the axial rod 4.3 at and below the horizontal line of the feed port 3. As a result, the small-sized coal gangue falling from the small feed channel 6 in the feed port 3 into the horizontal anti-blocking frame 4 can better pass through the area between the third protrusion 14 and the second protrusion 12 and then fall from the small feed channel 6 below the horizontal anti-blocking frame 4 into the jaw crusher body.

[0047] During the rotation of the horizontal anti-blocking frame 4, the large-scale coal gangue located in the horizontal anti-blocking frame 4 is supported by the second protrusions 12 and the third protrusions 14. At this time, the large-scale coal gangue is lifted upward along with the rotation of the horizontal anti-blocking frame 4. Thus, the large-scale coal gangue located in the horizontal anti-blocking frame 4 can be pre-crushed.

[0048] Furthermore, the third protrusion 14 has an arc-shaped structure that is concave inward, and the displacement plate 13 includes an axial plate body portion 13.1 and a radial plate body portion 13.2 fixedly arranged at both ends of the axial plate body portion 13.1. The radial plate body portion 13.2 is slidably installed on the end plate 4.1, and a guide groove 16 is provided on the guide seat 15. The inner end of the radial plate body is slidably arranged in the guide groove 16.

[0049] With this arrangement, the inner side of the axial plate portion 13.1 is exposed, allowing for the movement of gangue within the horizontal anti-blocking frame 4, making it easier for the gangue to pass through the horizontal anti-blocking frame 4. The guide groove 16 guides and limits the plate portion. When the third protrusion 14 is located below the horizontal line of the feed inlet 3 and in the area between the second top surface 9, the guide groove 16 forces the displacement plate 13 and the third protrusion 14 to be inwardly away from the axial rod 4.3. In this state, there is sufficient space between the third protrusion 14 and the horizontal anti-blocking frame 4 for the rolling or displacement of the gangue.

[0050] A support rod 17 is integrally provided on the outer end face of the guide seat 15, and a rod hole is opened at the center of the end plate 4.1. The support rod 17 passes through the rod hole outward and is fixedly connected to the feed hopper 2. The outer end face of the end plate 4.1 is provided with a shaft sleeve 18 that is rotatably sleeved outside the support rod 17. The power unit 7 is connected to the shaft sleeve 18, and the shaft sleeve 18 is rotatably installed on the feed hopper 2.

[0051] It should be noted that when the third protrusion 14 is in the position closest to the center of the horizontal anti-blocking frame 4, the distance between the third protrusion 14 and the horizontal anti-blocking frame 4 should not be less than the circumferential width of the large feed channel 5 to ensure that there is enough space in the horizontal anti-blocking frame 4 to accommodate large coal gangue. During the rotation of the horizontal anti-blocking frame 4, the large coal gangue inside the horizontal anti-blocking frame 4 is lifted for a distance and then tilted toward the center of the horizontal anti-blocking frame 4. It will be supported by the third protrusion 14, so that the large coal gangue will continue to be lifted. While the first protrusion 10 cooperates with the second top surface 9 to crush the lifted coal gangue outside the horizontal anti-blocking frame 4, the third protrusion 14 moves outward and cooperates with the second protrusion 12 to squeeze the lifted large coal gangue inside the horizontal anti-blocking frame 4 from the inside to the outside.

[0052] At the same time, the distance between the two displacement plates 13 corresponding to the axial rods 4.3 on both sides of the large feed channel 5 is smaller than the circumferential width of the large feed channel 5 and larger than the circumferential width of the small feed channel 6, which can prevent large coal gangue lifted in the horizontal anti-blocking frame 4 from entering the inner side of the displacement plate 13, and allows small coal gangue entering the inner side of the displacement plate 13 to smoothly detach from the inner side of the displacement plate 13 and detach from the horizontal anti-blocking frame 4.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A gangue crusher, comprising a jaw crushing body (1) and a feed hopper (2) arranged at the top of the jaw crushing body (1), characterized in that: A feed port (3) is provided on one side of the feed hopper (2), and a discharge port is provided at the bottom end of the feed hopper (2). A horizontal anti-blocking frame (4) is provided inside the feed hopper (2). A large feed channel (5) and multiple rows of small feed channels (6) are provided on the surface of the horizontal anti-blocking frame (4). The large feed channel (5) axially penetrates the horizontal anti-blocking frame (4), and the large feed channel (5) is used for large gangue to pass through. Two adjacent rows of small feed channels are provided. (6) are staggeredly distributed in the axial direction of the horizontal anti-blocking frame (4), and the small feed channel (6) is used for the passage of small coal gangue. The two ends of the horizontal anti-blocking frame (4) are rotatably matched with the two side walls of the feed hopper (2). The top of the feed hopper (2) is provided with a power device (7) for driving the horizontal anti-blocking frame (4) to rotate. When the horizontal anti-blocking frame (4) rotates, the large feed channel (5) and the small feed channel (6) pass through the feed port (3) from bottom to top.

2. A gangue crusher according to claim 1, characterized in that: The horizontal anti-blocking frame (4) comprises an end plate (4.1), a circumferential rod body (4.2) and an axial rod body (4.3). Two end plates (4.1) are provided, and the two end plates (4.1) are rotatably mounted on the two side walls of the feed hopper (2). A plurality of axial rod bodies (4.3) are provided at equal intervals between the two ends of the large feed channel (5) in the circumferential direction. A plurality of circumferential rod bodies (4.2) are provided between two adjacent axial rod bodies (4.3), and two adjacent circumferential rod bodies (4.2) cooperate with the two axial rod bodies (4.3) to form a small feed channel (6). The circumferential rod body (4.2) has an arc-shaped structure.

3. A gangue crusher according to claim 2, characterized in that: The outer diameter of the circumferential rod body (4.2) is smaller than the outer diameter of the axial rod body (4.3), and the width of the large feed channel (5) is greater than or equal to the width of the feed port (3).

4. A gangue crusher according to claim 2, characterized in that: The inner top wall of the feed hopper (2) extends inward from the feed port (3) and has a first top surface (8) and a second top surface (9) in sequence. The first top surface (8) is parallel to the inner bottom wall of the feed port (3), and the first top surface (8) is in a state where the inner end thereof is tilted downward. The second top surface (9) is in a state where the inner end thereof is tilted downward, and the tilt angle of the second top surface (9) is smaller than the tilt angle of the first top surface (8). The inner end of the second top surface (9) is located on the left side above the center of the horizontal anti-blocking frame (4).

5. The gangue crusher according to claim 4, characterized in that: The outer surface of the axial rod body (4.3) is provided with first protrusions (10) distributed at equal intervals, and the first top surface (8), the second top surface (9) and the inner wall of the feed hopper (2) are all provided with grooves (11), the radius of the circumferential surface where the bottom end of the second top surface (9) is located is smaller than the radius of the circumferential surface where the outer end of the first protrusion (10) is located, and the first protrusion (10) will enter the interior of the groove (11) when passing through the bottom end of the second top surface (9), and will enter the groove (11) on the side wall of the feed hopper (2) in the direction of the feed port (3) after passing above the discharge port.

6. The gangue crusher according to claim 2, characterized in that: The inner surface of the axial rod body (4.3) is provided with second protrusions (12) distributed at equal intervals, and the second protrusions (12) and the first protrusions (10) located on the same axial rod body (4.3) are symmetrically distributed on the inner and outer sides of the axial rod body (4.3).

7. The gangue crusher according to claim 6, characterized in that: A plurality of displacement plates (13) are provided at the center position of the inner side of the horizontal anti-blocking frame (4), and a plurality of third protrusions (14) are equidistantly provided on the outer side of the displacement plate (13). The displacement plates (13) and the axial rod bodies (4.3) are distributed in a one-to-one correspondence. A guide seat (15) is provided inside the end plate (4.1). The ends on both sides of the displacement plate (13) are slidably engaged with the guide seat (15), and when any axial rod body (4.3) passes below the second top surface (9), the guide seat (15) enables the displacement plate (13) located on the rear side of the axial rod body (4.3) to drive the third protrusion (14) to move outward and cooperate with the axial rod body (4.3) to crush the coal gangue.

8. The gangue crusher according to claim 7, characterized in that: When the displacement plate (13) is located below the middle of the feed port (3) and in the area inside the second top surface (9) on its circumferential trajectory, the distance between the third protrusion (14) on the displacement plate (13) and the corresponding second protrusion (12) is greater than the size of the small feed channel (6).

9. The gangue crusher according to claim 7, characterized in that: The third protrusion (14) is an arc-shaped structure recessed inward. The displacement plate (13) comprises an axial plate body (13.1) and radial plate body parts (13.2) fixedly arranged at both ends of the axial plate body part (13.1). The radial plate body part (13.2) is slidably mounted on the end plate (4.1). A guide groove (16) is provided on the guide seat (15), and the inner end of the radial plate body is slidably arranged in the guide groove (16).

10. The gangue crusher according to claim 9, characterized in that: The outer end surface of the guide seat (15) is integrally provided with a support rod (17), a rod hole is opened at the center of the end plate (4.1), the support rod (17) passes through the rod hole outward and is fixedly connected to the feed hopper (2), the outer end surface of the end plate (4.1) is provided with a shaft sleeve (18) rotatably sleeved outside the support rod (17), the power device (7) is connected to the shaft sleeve (18), and the shaft sleeve (18) is rotatably mounted on the feed hopper (2).

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