A multi-stage crushing device for ore processing

Abstract

The present invention relates to the technical field of ore crushing, and in particular to a multi-stage crushing device for ore processing, comprising a shell, wherein the top and bottom of the shell are respectively provided with a feed port and a discharge port, a jaw plate 1 and a tooth plate 1 are fixedly mounted on the inner wall of the shell, the jaw plate 1 is located above the tooth plate 1, and jaw plates 2, 3 and 2 are movably mounted between the feed port and the discharge port, the jaw plate 3 is located between the jaw plate 2 and the tooth plate 2. Continuous three-stage crushing is performed by the reciprocating sliding of the tooth plate 2, thereby improving work efficiency, the crushing angle of the jaw plate 2 is reduced by the cross frame 1 and the sliding block, thereby improving the crushing effect of the jaw plate 2, the sliding block and the bottom of the cross frame 2 are pressed downward against the ore between the jaw plates 1 and 2, thereby reducing the movable space of the ore, thereby further improving the crushing effect of the jaw plate 2, and the bottom of the cross frame 1 is pressed downward against the ore debris between the jaw plate 3 and the jaw plate 1, thereby reducing the movable space of the ore, thereby improving the crushing effect of the jaw plate 3.

Description

Technical Field

[0001] The present invention relates to the technical field of ore crushing, and in particular to a multi-stage crushing device for ore processing. Background Art

[0002] In the ore processing process, crushing is a key step to break large pieces of ore into smaller sizes for further processing. The crushing process not only affects the subsequent grinding efficiency, but also has a significant impact on the energy consumption and cost of the entire ore dressing process. Traditional crushing equipment often has problems such as low processing capacity, high energy consumption, and high maintenance costs. For example, an ore crushing device in the publication number: CN118384946A, when in use, within one working cycle of the driving device, drives the upper movable jaw to bite and crush large stones, and drives the lower movable jaw to open and collect the falling small stones, then drives the upper movable jaw to open and collect the large stones, and drives the lower movable jaw to bite and crush the small stones, and drives the upper movable jaw and the lower movable jaw to bite and crush the small stones through the driving device. Circular motion is used to achieve high-efficiency crushing of ore. However, this method only improves the utilization rate of the driving device, while the crushing effect and efficiency of the ore are not improved. At the same time, if the side of the ore is an inclined surface, during the crushing process of the upper and lower movable jaws, the side walls of the upper and lower movable jaws will collide and push the inclined surface of the ore upward, causing the ore to move upward. Not only can the ore with an inclined surface not be crushed, it will also cause blockage and the crushing work cannot be continued. In addition, the crushed debris still needs to be transported to the next crushing device for refining the debris, resulting in the need for multiple devices to complete the crushing and refining of the ore, resulting in low overall cost and crushing efficiency. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems in the background technology and to propose a multi-stage crushing device for ore processing.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A multi-stage crushing device for ore processing comprises an outer shell, wherein a feed port and a discharge port are respectively provided at the top and bottom of the outer shell, a jaw plate 1 and a tooth plate 1 are fixedly mounted on the inner wall of the outer shell, the jaw plate 1 is located above the tooth plate 1, and jaw plate 2, jaw plate 3 and tooth plate 2 are movably mounted between the feed port and the discharge port, the jaw plate 3 is located between jaw plate 2 and tooth plate 2, the jaw plate 2 and jaw plate 3 both correspond to jaw plate 1, the tooth plate 2 corresponds to tooth plate 1, a sliding frame is slidably mounted between the jaw plate 1 and jaw plate 2, the side walls of the sliding frame are integrally formed with a cross frame 1 and a cross frame 2, and the side walls of the cross frame 1 and the cross frame 2 both conflict with the side walls of the jaw plate 1.

[0006] In the above-mentioned multi-stage crushing device for ore processing, a fixed rod is integrally formed inside the outer shell, the bottom of the jaw plate 2 is rotatably mounted on the outer side of the fixed rod, the side wall of the jaw plate 2 is rotatably mounted with a connecting rod 1, the side wall of the outer shell is fixedly mounted with an electric motor 1, the output shaft of the electric motor 1 is fixedly connected to a turntable 1, and the side wall of the connecting rod 1 is rotatably connected to the eccentric point of one side wall of the turntable.

[0007] In the above-mentioned multi-stage crushing device for ore processing, the bottom of the jaw plate three and the top of the tooth plate two are rotatably connected, the side wall of the top of the jaw plate three is integrally formed with a slider one, the inner wall of the outer shell is provided with a slide groove one, and the slider one is slidably installed inside the slide groove one.

[0008] In the above-mentioned multi-stage crushing device for ore processing, a second motor and a reducer are fixedly installed inside the outer shell, the output shaft of the second motor and the input shaft of the reducer are fixedly connected, the output shaft of the reducer is fixedly connected to the second turntable, and the side wall of the second tooth plate is rotatably installed with a second connecting rod, and the second connecting rod is rotatably connected to the eccentric point of the side wall of the second turntable.

[0009] In the above-mentioned multi-stage crushing device for ore processing, the side walls on both sides of the tooth plate 2 are integrally formed with sliders 2, the inner wall of the shell is provided with a slide groove 3, and the slider 2 is slidably installed inside the slide groove 3.

[0010] In the above-mentioned multi-stage crushing device for ore processing, the side wall of the sliding frame is integrally formed with a slider three, the inner wall of the outer shell is provided with a slide groove two, the slider three is slidably installed inside the slide groove two, and the bottom of the sliding frame and the top of the tooth plate two are fixedly connected.

[0011] In the above-mentioned multi-stage crushing device for ore processing, the tops of the horizontal frame one and the horizontal frame two are respectively provided with inclined plane one and inclined plane two, and the side wall of the horizontal frame one close to the jaw plate one is integrally formed with a convex tooth, and the convex tooth is slidably installed inside the groove of one side wall of the jaw plate.

[0012] In the above-mentioned multi-stage crushing device for ore processing, a boss is integrally formed inside the groove of one side wall of the jaw plate, and a number of evenly distributed slide grooves four are opened on the side wall of the cross frame two. A sliding block is slidably installed inside each of the slide grooves four, and the sliding block and the boss are in conflict with each other.

[0013] Compared with the existing technology, the advantages of the present invention are:

[0014] 1. The present invention cooperates between tooth plate one and tooth plate two. During the reciprocating sliding of tooth plate two, when tooth plate two slides upward, the tooth surface of the side wall of tooth plate two drives the ore to move upward, so that the ore hits the bottom of the tooth surface of one side wall of tooth plate. At this time, the bottom of the tooth surface of one side wall of tooth plate crushes the ore, thereby realizing three-stage crushing and refining the ore fragments. When tooth plate two slides downward, the bottom of the tooth surface of the side wall of tooth plate two drives the ore to move downward, so that the ore hits the tooth surface of one side wall of tooth plate. At this time, the bottom of the tooth surface of the side wall of tooth plate two crushes the ore, thereby realizing continuous three-stage crushing and improving work efficiency. At the same time, when tooth plate two slides downward, the bottom of tooth plate two is located inside the discharge port, so that the bottom of tooth plate two hits the ore fragments inside the discharge port, thereby avoiding clogging of ore fragments inside the discharge port.

[0015] 2. The present invention cooperates between the cross frame 1 and the jaw plate 2. When the sliding frame drives the cross frame 1 to move upward, the inclined surface 1 contacts and drives the large pieces of ore between the jaw plate and the jaw plate 2 to move upward, so that the small pieces of ore between the jaw plate 1 and the jaw plate 2 fall between the jaw plate 3 and the jaw plate 1. At this time, the crushing angle of the jaw plate 2 is further reduced by the cross frame 1, thereby improving the crushing effect of the jaw plate 2. When the sliding frame drives the cross frame 1 to slide back and forth, the convex teeth move with the cross frame 1, so that the convex teeth clean the inside of the groove on one side wall of the jaw plate, thereby preventing ore debris from getting stuck in the groove on one side wall of the jaw plate and affecting the crushing effect of the jaw plate 2.

[0016] 3. The present invention utilizes the cooperation between the cross frame 1 and the jaw plate 3. When the sliding frame drives the cross frame 1 to move downward, the bottom of the cross frame 1 presses downward against the ore debris between the jaw plates 3 and 1, thereby reducing the movement space of the ore and preventing the ore debris between the jaw plates 3 and 1 from moving upward when the angle between the jaw plates 3 and 1 decreases, thereby improving the crushing effect of the jaw plate 3.

[0017] 4. The present invention cooperates between the cross frame 2 and the jaw plate 2. When the sliding frame drives the cross frame 2 to move upward, the sliding block slides toward the jaw plate 2, so that the sliding block contacts and drives upward the large piece of ore stuck between the jaw plates 1 and 2. The sliding block further reduces the crushing angle of the jaw plate 2, so that the large piece of ore stuck between the jaw plates 1 and 2 is crushed, thereby improving the crushing effect of the jaw plate 2. When the sliding frame drives the cross frame 2 to move downward, the bottom of the sliding block and the bottom of the cross frame 2 contact downward with the ore between the jaw plates 1 and 2, reducing the activity space of the ore, thereby improving the crushing effect of the jaw plate 2. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the installation of the internal structure of the housing in the present invention;

[0020] Figure 3 It is a cross-sectional view of the overall structure of the present invention;

[0021] Figure 4 It is a structural cross-sectional view of the housing in the present invention;

[0022] Figure 5 Schematic diagram of the structure of jaw plate 1 and jaw plate 2 in the present invention;

[0023] Figure 6 Schematic diagram of the structure of the tooth plate 2 and the sliding frame in the present invention;

[0024] Figure 7 Schematic diagram of the local structure of the sliding frame in the present invention;

[0025] Figure 8 It is a structural schematic diagram of the tooth plate 2 and the jaw plate 3 in the present invention.

[0026] In the figure: 1. housing; 111. feed port; 112. discharge port; 121. jaw plate 1; 122. tooth plate 1; 131. chute 1; 132. chute 2; 133. fixing rod; 134. chute 3; 21. jaw plate 2; 211. motor 1; 212. connecting rod 1; 213. turntable 1; 214. boss; 22. jaw plate 3; 221. slider 1; 23. tooth plate 2; 231. connecting rod 2; 232. turntable 2; 233. reducer; 234. motor 2; 235. slider 2; 31. sliding frame; 311. cross frame 1; 312. cross frame 2; 313. sliding block; 314. slider 3; 315. convex tooth; 316. chute 4; 317. inclined plane 1; 318. inclined plane 2. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0029] Reference Figure 1 - Figure 8As shown, a multi-stage crushing device for ore processing includes a shell 1, a feed port 111 and a discharge port 112 are respectively provided at the top and bottom of the shell 1, a jaw plate 121 and a tooth plate 122 are fixedly installed on the inner wall of the shell 1, the jaw plate 121 is located above the tooth plate 122, a jaw plate 21, a jaw plate 32 and a tooth plate 23 are movably installed between the feed port 111 and the discharge port 112, the jaw plate 32 is located between the jaw plate 21 and the tooth plate 23, the jaw plate 21 and the jaw plate 32 both correspond to the jaw plate 121, the tooth plate 23 corresponds to the tooth plate 122, a sliding frame 31 is slidably installed between the jaw plate 121 and the jaw plate 21, the side wall of the sliding frame 31 is integrally formed with a cross frame 1 311 and a cross frame 2 312, and the side walls of the cross frame 1 311 and the cross frame 2 312 both conflict with the side wall of the jaw plate 121.

[0030] like Figure 1 and Figure 3-Figure 5 As shown, a fixing rod 133 is integrally formed inside the housing 1, the bottom of the jaw plate 21 is rotatably mounted on the outside of the fixing rod 133, the side wall of the jaw plate 21 is rotatably mounted with a connecting rod 1 212, the side wall of the housing 1 is fixedly mounted with a motor 1 211, the output shaft of the motor 1 211 is fixedly connected to a turntable 1 213, and the side wall of the connecting rod 1 212 is rotatably connected to the eccentric portion of the side wall of the turntable 1 213.

[0031] Among them, the motor 211 drives the turntable 213 to rotate, so that the turntable 213 drives the jaw plate 21 to swing back and forth through the connecting rod 1 212. During the reciprocating swing of the jaw plate 21, the primary crushing is performed through the continuously changing angle between the jaw plate 21 and the jaw plate 121.

[0032] like Figure 3 、 Figure 4 and Figure 6 As shown, the interior of the shell 1 is fixedly installed with a second motor 234 and a reducer 233, the output shaft of the second motor 234 and the input shaft of the reducer 233 are fixedly connected, the output shaft of the reducer 233 is fixedly connected to the turntable 232, the side wall of the second tooth plate 23 is rotatably installed with a second connecting rod 231, the second connecting rod 231 is rotatably connected to the eccentric point of the side wall of the turntable 232, the side walls on both sides of the second tooth plate 23 are integrally formed with a second slider 235, the inner wall of the shell 1 is provided with a third slide groove 134, and the second slider 235 is slidably installed inside the third slide groove 134.

[0033] Among them, the working principle of the tooth plate 23 is as follows: the motor 234 drives the turntable 232 to rotate, so that the turntable 232 drives the tooth plate 23 to slide back and forth through the connecting rod 231, and the reducer 233 is used to reduce the speed of the turntable 232 and increase the torque of the turntable 232. At this time, the speed of the turntable 232 is less than the speed of the turntable 1 213. In the process of the reciprocating sliding of the tooth plate 23, when the tooth plate 23 slides upward, the tooth surface of the side wall of the tooth plate 23 drives the ore to move upward, so that the ore hits the bottom of the tooth surface of the side wall of the tooth plate 122. At this time, the tooth plate 122 The bottom of the side wall tooth surface crushes the ore, thereby achieving three-level crushing and refining the ore fragments. When the tooth plate 23 slides downward, the bottom of the side wall tooth surface of the tooth plate 23 drives the ore to move downward, so that the ore contacts the tooth surface of the side wall of the tooth plate 1 122. At this time, the bottom of the side wall tooth surface of the tooth plate 23 crushes the ore, thereby achieving continuous three-level crushing and improving work efficiency. At the same time, when the tooth plate 23 slides downward, the bottom of the tooth plate 23 is located inside the discharge port 112, so that the bottom of the tooth plate 23 contacts the ore fragments inside the discharge port 112, thereby avoiding clogging of the ore fragments inside the discharge port 112.

[0034] Further references Figure 3 To illustrate, the distance between the tops of tooth plate 122 and tooth plate 2 23 is greater than the distance between the bottoms, so that the ore fragments after being crushed by tooth plate 122 and tooth plate 2 23 are smaller. At the same time, tooth plates 122 and tooth plates 2 23 with different distances between the bottoms can be replaced according to needs, thereby adjusting the size of the ore fragments after the tertiary crushing.

[0035] like Figure 2-Figure 4 and Figure 8 As shown, the bottom of the jaw plate three 22 and the top of the tooth plate two 23 are rotatably connected, the side wall of the top of the jaw plate three 22 is integrally formed with a slider 221, the inner wall of the shell 1 is provided with a slide groove 131, and the slider 221 is slidably installed inside the slide groove 131.

[0036] Among them, the working principle of jaw plate three 22 is as follows: the slide groove one 131 is inclined, and during the reciprocating sliding of tooth plate two 23, tooth plate two 23 drives jaw plate three 22 to slide reciprocatingly. When tooth plate two 23 slides upward, slider one 221 slides upward, so that the angle between jaw plate three 22 and jaw plate one 121 increases, so that jaw plate three 22 collects the ore debris above; when tooth plate two 23 slides downward, slider one 221 slides downward, so that the angle between jaw plate three 22 and jaw plate one 121 decreases, so that jaw plate three 22 performs secondary crushing on the ore debris between jaw plate three 22 and jaw plate one 121.

[0037] like Figure 2-Figure 4 and Figure 6As shown, the side wall of the sliding frame 31 is integrally formed with a slider three 314, the inner wall of the shell 1 is provided with a slide groove 2 132, the slider three 314 is slidably installed inside the slide groove 2 132, and the bottom of the sliding frame 31 and the top of the tooth plate 2 23 are fixedly connected.

[0038] The sliding frame 31 is made of high-strength alloy steel.

[0039] like Figure 2 、 Figure 6 and Figure 7 As shown, the tops of the cross frame 1 311 and the cross frame 2 312 are respectively provided with a slope 1 317 and a slope 2 318 , and the side wall of the cross frame 1 311 close to the jaw plate 1 121 is integrally formed with a convex tooth 315 , which is slidably installed inside the groove of the side wall of the jaw plate 121 .

[0040] The working principle of the cross frame 1 311 is as follows: during the reciprocating sliding of the tooth plate 23, the tooth plate 23 drives the sliding frame 31 to slide back and forth. When the tooth plate 23 slides upward, the sliding frame 31 drives the cross frame 1 311 to move upward, and the inclined surface 1 317 contacts and drives the large pieces of ore between the jaw plate 1 121 and the jaw plate 2 21 to move upward, so that the small pieces of ore between the jaw plate 1 121 and the jaw plate 2 21 fall between the jaw plate 3 22 and the jaw plate 1 121. At this time, the crushing angle of the jaw plate 21 is further reduced by the cross frame 1 311, thereby improving the crushing effect of the jaw plate 21. When the tooth plate 23 slides downward, the sliding frame 31 drives the cross frame 1 The frame 1 311 moves downward, so that the bottom of the horizontal frame 1 311 touches the ore debris between the jaw plate 3 22 and the jaw plate 121 downward, avoiding the ore debris between the jaw plate 3 22 and the jaw plate 121 from moving upward when the angle between the jaw plate 3 22 and the jaw plate 121 is reduced, thereby improving the crushing effect of the jaw plate 3 22. In the process of the sliding frame 31 driving the horizontal frame 1 311 to slide back and forth, the convex teeth 315 move with the horizontal frame 1 311, so that the convex teeth 315 clean the inside of the groove on the side wall of the jaw plate 121, avoiding the ore debris from being stuck in the groove on the side wall of the jaw plate 121 and affecting the crushing effect of the jaw plate 21.

[0041] like Figure 5 and Figure 7 As shown, a boss 214 is integrally formed inside the groove of the side wall of the jaw plate 121, and a plurality of evenly distributed sliding grooves 316 are opened on the side wall of the cross frame 2 312. A sliding block 313 is slidably installed inside each sliding groove 316, and the sliding block 313 and the boss 214 are in conflict with each other.

[0042] The second jaw 21 is pressed against the workbench 311 and the second jaw 21 is pressed against the workbench 311, and the workbench 311 is pressed against the workbench 311. The second jaw 21 is pressed against the workbench 311 and the second jaw 21 is pressed against the workbench 311.

[0043] The specific working principle and use method of the present invention are explained in detail below: the ore to be crushed is transported to the inside of the feed port 111 through the feeding device, the motor 1 211 and the motor 2 234 are started, the motor 1 211 drives the jaw plate 2 21 to swing back and forth, so that during the reciprocating swing of the jaw plate 21, the angle between the jaw plate 21 and the jaw plate 1 121 is continuously changed to perform primary crushing, and the ore debris after the primary crushing falls between the jaw plate 3 22 and the jaw plate 1 121, and the motor 2 234 drives the tooth plate 2 23 to slide back and forth, and the tooth plate 2 2 3 drives the jaw plate 3 22 and the sliding frame 31 to move, so that when the tooth plate 23 drives the jaw plate 3 22 and the sliding frame 31 to slide upward, the angle between the jaw plate 3 22 and the jaw plate 1 121 increases, so that the jaw plate 3 22 collects the ore debris above, and the cross frame 1 311 and the cross frame 2 312 respectively contact with the inclined surface 1 317 and the sliding block 313 and drive the large pieces of ore between the jaw plate 1 121 and the jaw plate 2 21 and the large pieces of ore stuck between the jaw plate 1 121 and the jaw plate 2 21 upward, so that the small pieces of ore between the jaw plate 1 121 and the jaw plate 2 21 fall to the jaw plate 3 22 and the jaw plate 3 At this time, the crushing angle of jaw plate 21 is further reduced by cross frame 1 311 and sliding block 313, so that the large pieces of ore stuck between jaw plate 1 121 and jaw plate 2 21 are crushed, thereby improving the crushing effect of jaw plate 21. When tooth plate 23 drives jaw plate 3 22 to slide downward, the angle between jaw plate 3 22 and jaw plate 1 121 is reduced, so that jaw plate 3 22 performs secondary crushing on the ore debris between jaw plate 3 22 and jaw plate 1 121. At the same time, the sliding block 313 presses the ore between jaw plate 1 121 and jaw plate 21 downward through the bottom, reducing the ore. The movable space of the jaw plate 21 is improved, and the crushing effect of the jaw plate 21 is improved. The cross frame 1 311 presses downward against the ore fragments between the jaw plate 3 22 and the jaw plate 1 121 through the bottom, reducing the movable space of the ore fragments, thereby improving the crushing effect of the jaw plate 3 22. The ore fragments after the secondary crushing fall between the tooth plate 1 122 and the tooth plate 2 23. Through the reciprocating sliding of the tooth plate 23, the tooth surfaces of the side walls of the tooth plate 122 and the tooth surfaces of the side walls of the tooth plate 23 continuously crush the ore fragments between the tooth plate 1 122 and the tooth plate 2 23, thereby realizing continuous tertiary crushing, refining the ore fragments, and improving work efficiency.

[0044] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are common means well known to those skilled in the art.

[0045] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A multi-stage crushing device for ore processing, comprising a housing (1), characterized in that: The top and bottom of the shell (1) are respectively provided with a feed port (111) and a discharge port (112); a jaw plate 1 (121) and a tooth plate 1 (122) are fixedly mounted on the inner wall of the shell (1); the jaw plate 1 (121) is located above the tooth plate 1 (122); a jaw plate 2 (21), a jaw plate 3 (22) and a tooth plate 2 (23) are movably mounted between the feed port (111) and the discharge port (112); the jaw plate 3 (22) is located between the jaw plate 2 (21) and the tooth plate 2 ( 23), the jaw plate 2 (21) and the jaw plate 3 (22) both correspond to the jaw plate 1 (121), the tooth plate 2 (23) and the tooth plate 1 (122) correspond to each other, a sliding frame (31) is slidably installed between the jaw plate 1 (121) and the jaw plate 2 (21), the side wall of the sliding frame (31) is integrally formed with a cross frame 1 (311) and a cross frame 2 (312), and the side walls of the cross frame 1 (311) and the cross frame 2 (312) both conflict with the side wall of the jaw plate 1 (121); The tops of the cross frame 1 (311) and the cross frame 2 (312) are respectively provided with an inclined surface 1 (317) and an inclined surface 2 (318); the side wall of the cross frame 1 (311) close to the jaw plate 1 (121) is integrally formed with a convex tooth (315); the convex tooth (315) is slidably mounted inside a groove of the side wall of the jaw plate 1 (121); A boss (214) is integrally formed inside the side wall groove of the jaw plate 1 (121), and a plurality of evenly distributed sliding grooves (316) are opened on the side wall of the cross frame 2 (312), and a sliding block (313) is slidably installed inside each of the sliding grooves (316), and the sliding block (313) and the boss (214) are in contact with each other; The bottom of the sliding frame (31) and the top of the second tooth plate (23) are fixedly connected; When the tooth plate 2 (23) drives the jaw plate 3 (22) and the sliding frame (31) to slide upward, the cross frame 1 (311) and the cross frame 2 (312) respectively contact and drive the large pieces of ore between the jaw plate 1 (121) and the jaw plate 2 (21) and the large pieces of ore stuck between the jaw plate 1 (121) and the jaw plate 2 (21) upward through the inclined surface 1 (317) and the sliding block (313), so that the small pieces of ore between the jaw plate 1 (121) and the jaw plate 2 (21) fall between the jaw plate 3 (22) and the jaw plate 1 (121). At this time, the crushing angle of the jaw plate 2 (21) is further reduced by the cross frame 1 (311) and the sliding block (313); When the tooth plate 2 (23) drives the jaw plate 3 (22) to slide downward, the sliding block (313) contacts the ore between the jaw plate 1 (121) and the jaw plate 2 (21) through its bottom, and the cross frame 1 (311) contacts the ore debris between the jaw plate 3 (22) and the jaw plate 1 (121) through its bottom.

2. The multi-stage crushing device for ore processing according to claim 1, characterized in that: A fixing rod (133) is integrally formed inside the housing (1), the bottom of the second jaw plate (21) is rotatably mounted on the outside of the fixing rod (133), a connecting rod (212) is rotatably mounted on the side wall of the second jaw plate (21), a motor (211) is fixedly mounted on the side wall of the housing (1), an output shaft of the motor (211) is fixedly connected to a turntable (213), and the side wall of the connecting rod (212) is rotatably connected to an eccentric portion of the side wall of the turntable (213).

3. The multi-stage crushing device for ore processing according to claim 1, characterized in that: The bottom of the jaw plate three (22) and the top of the tooth plate two (23) are rotatably connected, and the side wall of the top of the jaw plate three (22) is integrally formed with a slider one (221), and the inner wall of the shell (1) is provided with a slide groove one (131), and the slider one (221) is slidably installed inside the slide groove one (131).

4. The multi-stage crushing device for ore processing according to claim 1, characterized in that: A second motor (234) and a reducer (233) are fixedly installed inside the housing (1); the output shaft of the second motor (234) and the input shaft of the reducer (233) are fixedly connected; the output shaft of the reducer (233) is fixedly connected to a second turntable (232); a second connecting rod (231) is rotatably installed on the side wall of the second tooth plate (23); and the second connecting rod (231) is rotatably connected to an eccentric portion of the side wall of the second turntable (232).

5. The multi-stage crushing device for ore processing according to claim 1, characterized in that: The side walls on both sides of the tooth plate 2 (23) are integrally formed with a slider 2 (235), and the inner wall of the shell (1) is provided with a slide groove 3 (134), and the slider 2 (235) is slidably installed inside the slide groove 3 (134).

6. The multi-stage crushing device for ore processing according to claim 1, characterized in that: The side wall of the sliding frame (31) is integrally formed with a slider block three (314), the inner wall of the housing (1) is provided with a slide groove two (132), and the slider block three (314) is slidably mounted inside the slide groove two (132).

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