Coal gangue crusher

Abstract

The coal gangue crusher belongs to the technical field of coal field geological exploration. The coal gangue crusher comprises a jaw crusher main body and a feeding hopper arranged at the top end of the jaw crusher main body. One side of the feeding hopper is provided with a feeding port, the bottom end of the feeding hopper is a discharging port, the inside of the feeding hopper is provided with a horizontal anti-blocking frame, the surface of the horizontal anti-blocking frame is provided with one feeding large channel and multiple rows of feeding small channels, the feeding large channel penetrates through the horizontal anti-blocking frame in the axial direction, the adjacent two rows of feeding small channels are staggered distributed in the axial direction of the horizontal anti-blocking frame, the feeding small channels are used for 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, the top end of the feeding hopper is provided with a power device for driving the horizontal anti-blocking frame to rotate, and when the horizontal anti-blocking frame rotates, the feeding large channel and the feeding small channels pass through the feeding port from bottom to top. The coal gangue crusher has the advantages of anti-blocking, coal gangue pre-crushing, long service life and strong stability.

Description

Technical Field

[0001] This invention relates to the field of coalfield geological exploration technology, specifically to a coal gangue crusher. Background Technology

[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, providing a scientific basis for coal mine design, construction, and production. To ensure the accuracy of coal geological testing, effective chemical analysis of coal gangue is necessary. For example, when analyzing the composition of coal gangue (such as ash, sulfur, and trace elements), it needs to be crushed to a certain particle size (e.g., 80-200 mesh). Given the varying sizes of raw coal gangue, crushing is required for all sizes to obtain a large number of effective samples for chemical analysis, ensuring the effective conduct of coalfield geological exploration.

[0003] Currently, among the types of coal gangue crushers, jaw crushers are one of the most common types. In the process of crushing coal gangue using a jaw crusher, small pieces of coal gangue can quickly enter the crushing zone and be crushed by the fixed and movable jaw plates. However, when the coal gangue is large, it is difficult for it to enter the crushing zone, causing large pieces of coal gangue to frequently bounce at the entrance of the crushing zone and easily block it. This prevents smaller pieces of coal gangue from effectively entering the crushing zone and being crushed. Therefore, to ensure the effective conduct of chemical testing in coalfield geological exploration, this application provides a coal gangue crusher. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this invention proposes a coal gangue crusher with anti-clogging, pre-crushing and anti-deformation functions, long service life and strong stability.

[0005] The technical solution of this invention is implemented as follows: A coal gangue crusher includes a jaw crusher body and a feed hopper located at the top of the jaw crusher body. The feed hopper has a feed inlet on one side and a discharge outlet at its bottom. A horizontal anti-blocking frame is installed inside the feed hopper. The surface of the horizontal anti-blocking frame has a large feed channel and multiple rows of small feed channels. The large feed channel axially penetrates the horizontal anti-blocking frame and is used for large coal gangue. Two adjacent rows of small feed channels are staggered axially along the horizontal anti-blocking frame and are used for small coal gangue. The two ends of the horizontal anti-blocking frame are rotatably engaged with the side walls of the feed hopper. A power device is installed at the top of the feed hopper to drive the horizontal anti-blocking frame to rotate. When the horizontal anti-blocking frame rotates, the large and small feed channels pass through the feed inlet from bottom to top.

[0006] Furthermore, the horizontal anti-blocking frame includes end plates, circumferential rods, and axial rods. Two end plates are provided, and the two end plates are rotatably installed on the two side walls of the feed hopper, respectively. Multiple axial rods are provided at equal intervals between the two ends of the large feed channel in the circumferential direction. Multiple circumferential rods are provided between two adjacent axial rods, and two adjacent circumferential rods cooperate with two axial rods to form a small feed channel. The circumferential rods have an arc-shaped structure.

[0007] Furthermore, the outer diameter of the circumferential rod is smaller than the outer diameter of the axial rod, and the width of the feed channel is greater than or equal to the width of the feed inlet.

[0008] Furthermore, the inner top wall of the feed hopper extends inward from the feed inlet 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 inlet, and the first top surface is inclined downward at its inner end. The second top surface is also inclined downward at its inner end, and the inclination angle of the second top surface is less than that of the first top surface. The inner end of the second top surface is located on the left side above the center of the horizontal anti-blocking frame.

[0009] Furthermore, the outer surface of the axial rod is provided with equidistantly distributed first protrusions. The first top surface, the second top surface, and the inner wall of the feed hopper are all provided with through grooves. The radius of the circumference of the bottom end of the second top surface is smaller than the radius of the circumference of the outer end of the first protrusion. When the first protrusion passes the bottom end of the second top surface, it will enter the interior of the through groove. After the first protrusion passes above the discharge port, it will enter the through groove on the side wall of the feed hopper located in the direction of the feed port.

[0010] Furthermore, the inner surface of the axial rod is provided with equidistantly distributed second protrusions, and the second protrusions located on the same axial rod are symmetrically distributed with the first protrusions on the inner and outer sides of the axial rod.

[0011] Furthermore, multiple displacement plates are provided at the center of the inner side of the horizontal anti-blocking frame, and multiple third protrusions are provided at equal intervals on the outer side of the displacement plates. The displacement plates are distributed in a one-to-one correspondence with the axial rods. A guide seat is provided inside the end plate. The ends of the displacement plates on both sides are slidably engaged with the guide seat. When any axial rod passes below the second top surface, the guide seat causes the displacement plate located behind the axial rod to drive the third protrusion to move outward and cooperate with the axial rod to crush the coal gangue.

[0012] Furthermore, when the displacement plate is located in the area below the middle of the feed inlet and 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 feed channel.

[0013] Furthermore, the third protrusion has an inwardly recessed arc-shaped structure, the displacement plate includes an axial plate body and radial plate bodies fixedly disposed at both ends of the axial plate body, the radial plate bodies are slidably mounted on the end plate, the guide seat is provided with a guide groove, and the inner end of the radial plate body is slidably disposed in the guide groove.

[0014] Furthermore, a support rod is integrally provided on the outer end face of the guide seat, and a rod hole is provided at the center of the end plate. The support rod passes outward through the rod hole and is fixedly connected to the feed hopper. A bushing is provided on the outer end face of the end plate and is rotatably sleeved on the support rod. The power device is connected to the bushing, and the bushing is rotatably mounted on the feed hopper.

[0015] The present invention has the following beneficial effects: 1. By setting a feed hopper at the inlet of the jaw crusher and installing a horizontal anti-blocking frame inside the feed hopper, and setting a large feed channel and a small feed channel on the horizontal anti-blocking frame, large and small coal gangue can be classified and transported separately to the inlet of the jaw crusher. This prevents a large amount of large coal gangue from accumulating at the inlet of the jaw crusher, which would prevent small coal gangue from being effectively fed. This has an anti-blocking function and at the same time ensures the crushing efficiency of the jaw crusher.

[0016] 2. By setting the first, second, and third protrusions, large coal gangue that is lifted separately inside and outside the horizontal anti-blocking frame can be crushed during the rotation of the horizontal anti-blocking frame. This improves the crushing efficiency of coal gangue and enhances the anti-blocking performance. In addition, the simultaneous crushing inside and outside makes the horizontal anti-blocking frame more balanced in terms of force, thus improving the service life and stability of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the present invention.

[0018] Figure 2 This is the present invention. Figure 1 Another perspective view.

[0019] Figure 3 This is the present invention. Figure 2 Enlarged view of point A in the image.

[0020] Figure 4 This is a schematic diagram of the feed hopper of the present invention.

[0021] Figure 5 This is a schematic diagram of the feed hopper of the present invention after being cut open.

[0022] Figure 6 This is the present invention. Figure 5 A partial schematic diagram.

[0023] Figure 7 This is a schematic diagram of the horizontal anti-blocking frame of the present invention.

[0024] Figure 8 This is a schematic diagram of the support rod, guide seat, displacement plate and third protrusion of the present invention.

[0025] Figure 9 This is the present invention. Figure 8 Enlarged view of point B in the image.

[0026] Figure 10 This is a schematic diagram of the guide groove of the present invention.

[0027] Figure 11 This is a schematic diagram of the displacement plate and the third protrusion of the present invention.

[0028] In the diagram: 1. Jaw crusher body; 2. Feed hopper; 3. Feed inlet; 4. Horizontal anti-blocking frame; 4.1. End plate; 4.2. Circumferential rod; 4.3. Axial rod; 5. Large feed channel; 6. Small feed channel; 7. Power unit; 8. First top surface; 9. Second top surface; 10. First protrusion; 11. Through groove; 12. Second protrusion; 13. Displacement plate; 13.1. Axial plate part; 13.2. Radial plate part; 14. Third protrusion; 15. Guide seat; 16. Guide groove; 17. Support rod; 18. Bushing. Detailed Implementation

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figures 1 to 11 As shown, a coal gangue crusher includes a jaw crusher body 1 and a feed hopper 2 located at the top of the jaw crusher body 1. The feed hopper 2 is characterized by having a feed inlet 3 on one side and a discharge outlet at its bottom. A horizontal anti-blocking frame 4 is installed inside the feed hopper 2. The surface of the horizontal anti-blocking frame 4 has 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 is used for large coal gangue. Two adjacent rows of small feed channels 6 are staggered axially along the horizontal anti-blocking frame 4 and are used for small coal gangue. The two ends of the horizontal anti-blocking frame 4 are rotatably engaged with the side walls of the feed hopper 2. A power device 7 for driving the horizontal anti-blocking frame 4 to rotate is installed at the top of the feed hopper 2. When the horizontal anti-blocking frame 4 rotates, the large feed channel 5 and the small feed channels 6 pass through the feed inlet 3 from bottom to top.

[0031] When the power unit 7 drives the horizontal anti-blocking frame 4 to rotate, the large feed channel 5 and the small feed channel 6 frequently pass through the feed inlet 3. When the small feed channel 6 passes through the feed inlet 3, large coal gangue cannot pass through the horizontal anti-blocking frame 4 and is blocked outside the feed inlet 3. This prevents large coal gangue from directly entering the jaw crusher body 1, while small coal gangue will directly pass through the small feed channel 6, pass through the horizontal anti-blocking frame 4, and fall into the jaw crusher body for direct crushing. In addition, large coal gangue blocked outside the feed inlet 3 enters the horizontal anti-blocking frame 4 when the large feed channel 5 moves to one side of the feed inlet 3. When the large feed channel 5 rotates to a downward position, the large coal gangue inside the horizontal anti-blocking frame 4 will fall into the jaw crusher body for crushing.

[0032] By employing a horizontal anti-blocking frame 4, the coal gangue entering the jaw crusher is classified and fed separately according to its size. This prevents large amounts of large coal gangue from concentrating at the jaw crusher's inlet and causing blockages, while also preventing smaller coal gangue from being unable to enter the jaw crusher effectively. This improves the crushing efficiency of the jaw crusher. Furthermore, the horizontal anti-blocking frame 4 disrupts the falling state of the coal gangue, preventing it from impacting the jaw crusher when falling vertically, thus providing better protection.

[0033] The horizontal anti-blocking frame 4 includes end plates 4.1, circumferential rods 4.2, and axial rods 4.3. There are two end plates 4.1, which are rotatably mounted on the two side walls of the feed hopper 2. Multiple axial rods 4.3 are arranged at equal intervals between the two ends of the large feed channel 5 in the circumferential direction. Multiple circumferential rods 4.2 are arranged between two adjacent axial rods 4.3, and two adjacent circumferential rods 4.2 cooperate with two axial rods 4.3 to form a small feed channel 6. The circumferential rods 4.2 have an arc-shaped structure.

[0034] During the rotation of the horizontal anti-blocking frame 4, the coal gangue located in the feed inlet 3 can be repeatedly pushed up by the axial rod 4.3 that makes circular motion, which makes the coal gangue in the feed inlet 3 move frequently relative to each other, making it easier for small coal gangue to pass through the horizontal anti-blocking frame 4, thus ensuring the crushing efficiency of small coal gangue.

[0035] The outer diameter of the circumferential rod 4.2 is smaller than the outer diameter of the axial rod 4.3, and the width of the feed channel 5 is greater than or equal to the width of the feed inlet 3. This arrangement makes the outer surface of the axial rod 4.3 convex relative to the axial rod 4.3, so that the axial rod 4.3 can better contact the coal gangue at the feed inlet 3, improving the effect of the axial rod 4.3 in pushing and loosening the coal gangue at the feed inlet 3.

[0036] The inner top wall of the feed hopper 2 extends inward from the feed inlet 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 inlet 3 and the first top surface 8 is inclined downward at its inner end. The second top surface 9 is inclined downward at its inner end and the inclination angle of the second top surface 9 is less 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.

[0037] During the rotation of the horizontal anti-blocking frame 4, irregular coal gangue, after being inserted into the feed channel 6 at one end, is carried upward in a circular motion by the horizontal anti-blocking frame 4. When the coal 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 coal gangue will be crushed by the horizontal anti-blocking frame 4 and the second top surface 9, which has the function of pre-crushing large coal gangue and some small coal gangue that is not convenient to pass directly through the horizontal anti-blocking frame 4. In addition, the crushed coal gangue will fall into the horizontal anti-blocking frame 4 through the feed channel 6, and after passing through the horizontal anti-blocking frame 4, it will directly enter the jaw crusher body.

[0038] The outer surface of the axial rod 4.3 is provided with equidistantly distributed first protrusions 10. The first top surface 8, the second top surface 9 and the inner wall of the feed hopper 2 are all provided with through grooves 11. The radius of the circumference of the bottom end of the second top surface 9 is smaller than the radius of the circumference of the outer end of the first protrusion 10. When the first protrusion 10 passes the bottom end of the second top surface 9, it will enter the interior of the through groove 11. After the first protrusion 10 passes above the discharge port, it will enter the through groove 11 on one side wall of the feed hopper 2 in the direction of the feed port 3.

[0039] As the coal gangue stuck in the feed channel 6 of the horizontal anti-blocking frame 4 passes through the first top surface 8 and the second top surface 9, it is effectively crushed by the cooperation of the first protrusion 10 and the through groove 11. Simultaneously, during the crushing process, the first protrusion 10 provides better support for the crushed coal gangue, preventing it from falling during crushing. This ensures that the coal gangue is fully crushed and passes through the feed channel 6 and through the horizontal anti-blocking frame 4. Furthermore, as the first protrusion 10 passes through the feed inlet 3, it provides better upward support for the coal gangue located within the feed inlet 3, improving the relative movement between the coal gangue located at the feed inlet 3 and making the coal gangue more loose.

[0040] The inner surface of the axial rod 4.3 is provided with equidistantly distributed second protrusions 12. The second protrusions 12 on the same axial rod 4.3 are symmetrically distributed with the first protrusions 10 on the inner and outer sides of the axial rod 4.3. During the rotation of the horizontal anti-blocking frame 4, the second protrusions 12 can provide good support for the coal gangue inside the horizontal anti-blocking frame 4, so that the coal gangue inside the horizontal anti-blocking frame 4 is lifted and falls under its own gravity, so that the coal gangue inside the horizontal anti-blocking frame 4 can pass through the horizontal anti-blocking frame 4 more efficiently and will not accumulate inside the horizontal anti-blocking frame 4. In addition, the feed channel 6 is designed so that after the coal gangue is lifted by the second protrusion 12, it will fall directly onto the coal gangue at the bottom of the horizontal anti-blocking frame 4, causing the coal gangue to collide with each other, improving the efficiency of coal gangue crushing, reducing the size of the coal gangue entering the jaw crusher body, and preventing the feed channel 6 from being blocked by the coal gangue in the horizontal anti-blocking frame 4.

[0041] Multiple displacement plates 13 are provided at the center of the inner side of the horizontal anti-blocking frame 4. Multiple third protrusions 14 are provided at equal intervals on the outer side of the displacement plates 13. The displacement plates 13 are distributed in a one-to-one correspondence with the axial rods 4.3. The end plate 4.1 is provided with a guide seat 15. The ends of the displacement plates 13 on both sides are slidably engaged with the guide seat 15. When any axial rod 4.3 passes under the second top surface 9, the guide seat 15 causes the displacement plate 13 on the rear side of the axial rod 4.3 to drive the third protrusions 14 to move outward and cooperate with the axial rod 4.3 to crush the coal gangue.

[0042] 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, in conjunction with the second top surface 9, crushes the coal gangue that is 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 moves outward, causing the third protrusion 14 on the displacement plate 13, in conjunction with the second protrusion 12 on the axial rod 4.3, to crush the coal gangue that is lifted inside the horizontal anti-blocking frame 4.

[0043] 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 circumferential direction of the horizontal anti-blocking frame 4, and will not interfere with each other. Furthermore, the axial rod 4.3 is simultaneously subjected to compressive forces in both the front and rear directions in the rotational direction of the horizontal anti-blocking frame 4, making the force on the axial rod 4.3 more balanced, and thus less prone to deformation. In addition, the crushed coal gangue is partially inserted into the feed channel 6. During the crushing process of the horizontal anti-blocking frame, the axial rod 4.3 is connected to both ends of the feed channel 6 by two circumferential rods 4.2, giving the axial rod 4.3 stronger rigidity and bending resistance. Furthermore, the horizontal anti-blocking frame 4 not only has the function of crushing externally raised coal gangue in conjunction with the first protrusion 10 and the second top surface 9, but also has the function of crushing internally raised coal gangue in conjunction with the second protrusion 12 and the third protrusion 14. In addition, by making the axial rod 4.3 relatively balanced under force, it can better prevent the axial rod 4.3 from deforming and bending, thereby improving its service life and stability.

[0044] When the displacement plate 13 is located in the area below the middle of the feed inlet 3 and inside the second top surface 9 on its circumferential trajectory, the distance between the third protrusion 14 and the corresponding second protrusion 12 on the displacement plate 13 is greater than the size of the feed channel 6. With this configuration, small coal gangue entering the horizontal anti-blocking frame 4 from the feed channel 6 in the feed inlet 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 inlet 3. This allows the small coal gangue falling from the feed channel 6 into the horizontal anti-blocking frame 4 to pass more effectively through the area between the third protrusion 14 and the second protrusion 12 and then fall into the jaw crusher body from the feed channel 6 below the horizontal anti-blocking frame 4.

[0045] During the rotation of the horizontal anti-blocking frame 4, the large coal gangue located inside the frame is supported by the second protrusion 12 and the third protrusion 14. At this time, the large coal gangue is lifted upwards along with the rotation of the frame 4. Consequently, the large coal gangue located inside the frame 4 can be pre-crushed.

[0046] Furthermore, the third protrusion 14 has an inwardly recessed arc-shaped structure. The displacement plate 13 includes an axial plate portion 13.1 and radial plate portions 13.2 fixedly disposed at both ends of the axial plate portion 13.1. The radial plate portions 13.2 are slidably mounted on the end plate 4.1. A guide groove 16 is provided on the guide seat 15. The inner end of the radial plate portion 13.2 is slidably disposed in the guide groove 16.

[0047] With this configuration, the inner side of the axial plate portion 13.1 is exposed, allowing coal gangue to move within the horizontal anti-blocking frame 4, making it easier for the coal gangue to pass through the frame. The guide groove 16 guides and limits the plate portion, ensuring that when the third protrusion 14 is located in the area between the feed inlet 3 and the second top surface 9, the guide groove 16 causes both 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 coal gangue.

[0048] A support rod 17 is integrally provided on the outer end face of the guide seat 15. A rod hole is provided at the center of the end plate 4.1. The support rod 17 passes outward through the rod hole and is fixedly connected to the feed hopper 2. A bushing 18 is provided on the outer end face of the end plate 4.1 and is rotatably sleeved on the support rod 17. The power device 7 is connected to the bushing 18, and the bushing 18 is rotatably mounted on the feed hopper 2.

[0049] It should be noted that when the third protrusion 14 is positioned 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 feed channel 5, to ensure sufficient space within the horizontal anti-blocking frame 4 to accommodate large coal gangue. During the rotation of the horizontal anti-blocking frame 4, when the large coal gangue inside the horizontal anti-blocking frame 4 is lifted a certain distance and then tilts towards the center of the horizontal anti-blocking frame 4, it will be supported by the third protrusion 14, allowing the large coal gangue to continue to be lifted. While the first protrusion 10, in conjunction with the second top surface 9, crushes the coal gangue lifted outside the horizontal anti-blocking frame 4, the third protrusion 14, by displacing outward and in conjunction with the second protrusion 12, squeezes the large coal gangue lifted inside the horizontal anti-blocking frame 4 from the inside out.

[0050] Meanwhile, the distance between the two displacement plates 13 corresponding to the axial rods 4.3 on both sides of the large feeding channel 5 is less than the circumferential width of the large feeding channel 5 and greater than the circumferential width of the small feeding channel 6. This can prevent large coal gangue that is lifted inside the horizontal anti-blocking frame 4 from entering the inner side of the displacement plate 13, and allow small coal gangue that enters 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.

[0051] 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 within the protection scope of the present invention.

Claims

1. A coal gangue crusher, comprising a jaw crusher body (1) and a feed hopper (2) disposed at the top of the jaw crusher body (1), characterized in that, The feed hopper (2) has a feed inlet (3) on one side and a discharge outlet at the bottom. A horizontal anti-blocking frame (4) is installed inside the feed hopper (2). The surface of the horizontal anti-blocking frame (4) has 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 is used for the passage of large coal gangue. Two adjacent rows of small feed channels... (6) The horizontal anti-blocking frame (4) is staggered in the axial direction, and the feed channel (6) is used for small coal gangue to pass through. The two ends of the horizontal anti-blocking frame (4) are rotated with the two side walls of the feed hopper (2). The top of the feed hopper (2) is provided with a power device (7) to drive the horizontal anti-blocking frame (4) to rotate. When the horizontal anti-blocking frame (4) rotates, the feed channel (5) and the feed channel (6) pass through the feed inlet (3) from bottom to top. The horizontal anti-blocking frame (4) includes an end plate (4.1), a circumferential rod (4.2), and an axial rod (4.3). There are two end plates (4.1), which are rotatably mounted on the two side walls of the feed hopper (2). Multiple axial rods (4.3) are arranged at equal intervals between the two ends of the feed channel (5) in the circumferential direction. Multiple circumferential rods (4.2) are arranged between two adjacent axial rods (4.3), and two adjacent circumferential rods (4.2) cooperate with two axial rods (4.3) to form a feed channel (6). The circumferential rods (4.2) have an arc-shaped structure. The inner top wall of the feed hopper (2) extends inward from the feed inlet (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 inlet (3), and the first top surface (8) is inclined downward at its inner end. The second top surface (9) is inclined 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). The outer surface of the axial rod (4.3) is provided with equidistantly distributed first protrusions (10). 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 circumference of the bottom end of the second top surface (9) is smaller than the radius of the circumference of the outer end of the first protrusion (10). When the first protrusion (10) passes the bottom end of the second top surface (9), it will enter the interior of the groove (11). After the first protrusion (10) passes above the discharge port, it will enter the groove (11) on one side wall of the feed hopper (2) in the direction of the feed port (3). The inner surface of the axial rod (4.3) is provided with second protrusions (12) that are evenly distributed. The second protrusions (12) on the same axial rod (4.3) are symmetrically distributed with the first protrusions (10) on the inner and outer sides of the axial rod (4.3). Multiple displacement plates (13) are provided at the center of the inner side of the horizontal anti-blocking frame (4). Multiple third protrusions (14) are provided at equal intervals on the outer side of the displacement plates (13). The displacement plates (13) and the axial rods (4.3) are distributed in a one-to-one correspondence. The end plate (4.1) is provided with a guide seat (15). The ends of the displacement plates (13) on both sides are slidably engaged with the guide seat (15). When any axial rod (4.3) passes under the second top surface (9), the guide seat (15) causes the displacement plate (13) located behind the axial rod (4.3) to drive the third protrusions (14) to move outward and cooperate with the axial rod (4.3) to crush coal gangue.

2. The coal gangue crusher as described in claim 1, characterized in that, The outer diameter of the circumferential rod (4.2) is smaller than the outer diameter of the axial rod (4.3), and the width of the feed channel (5) is greater than or equal to the width of the feed inlet (3).

3. The coal gangue crusher as described in claim 1, characterized in that, When the displacement plate (13) is located in the area below the middle of the feed inlet (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 feed channel (6).

4. The coal gangue crusher as described in claim 1, characterized in that, The third protrusion (14) has an inwardly recessed arc-shaped structure. The displacement plate (13) includes an axial plate body (13.1) and radial plate body (13.2) fixedly disposed at both ends of the axial plate body (13.1). The radial plate body (13.2) is slidably mounted on the end plate (4.1). The guide seat (15) is provided with a guide groove (16). The inner end of the radial plate body (13.2) is slidably disposed in the guide groove (16).

5. The coal gangue crusher as described in claim 4, characterized in that, The outer end face of the guide seat (15) is integrally provided with a support rod (17). The center of the end plate (4.1) is provided with a rod hole. The support rod (17) passes outward through the rod hole and is fixedly connected to the feed hopper (2). The outer end face of the end plate (4.1) is provided with a bushing (18) that is rotatably sleeved on the support rod (17). The power device (7) is connected to the bushing (18), and the bushing (18) is rotatably installed on the feed hopper (2).

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