Multi-stage crushing device for ore processing

Abstract

The invention relates to the technical field of ore crushing, in particular to a multistage crushing device for ore processing, which comprises a shell, the top and the bottom of the shell are respectively provided with a feed port and a discharge port, the inner wall of the shell is fixedly provided with a jaw plate I and a toothed plate I, and the jaw plate I is located above the toothed plate I; a second jaw plate, a third jaw plate and a second toothed plate are movably installed between the feeding port and the discharging port, and the third jaw plate is located between the second jaw plate and the second toothed plate. Continuous three-stage crushing is carried out through reciprocating sliding of a second toothed plate, the working efficiency is improved, the crushing angle of a second jaw plate is reduced through a first transverse frame and a sliding block, the crushing effect of the second jaw plate is improved, the bottom of the sliding block and the bottom of the second transverse frame abut against ore between the first jaw plate and the second jaw plate downwards, and the movement space of the ore is reduced; and the bottom of the first transverse frame downwards abuts against ore chippings between the third jaw plate and the first jaw plate, the movement space of the ore is reduced, and the crushing effect of the third jaw plate is improved.

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 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 movable jaw and the lower movable jaw, the side walls of the upper movable jaw and the lower movable jaw will collide with 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, but 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, thereby causing the problem of 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: 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 the 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, a jaw plate 2, a jaw plate 3 and a tooth plate 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, the jaw plate 2 and the jaw plate 3 both correspond to the jaw plate 1, the tooth plate 2 corresponds to the tooth plate 1, a sliding frame is slidably mounted between the jaw plates 1 and 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.

[0005] 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 second jaw plate is rotatably installed on the outer side of the fixed rod. A first connecting rod is rotatably installed on the side wall of the second jaw plate. A first motor is fixedly installed on the side wall of the outer shell. The output shaft of the first motor is fixedly connected to a first turntable. The side wall of the first connecting rod is rotatably connected to the eccentric position on the side wall of the first turntable.

[0006] In the above-mentioned multi-stage crushing device for ore processing, the bottom of the third jaw plate is rotatably connected to the top of the second toothed plate. A first slider is integrally formed on the side wall of the top of the third jaw plate. A first chute is formed on the inner wall of the outer shell. The first slider is slidably installed inside the first chute.

[0007] 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 is fixedly connected to the input shaft of the reducer. The output shaft of the reducer is fixedly connected to a second turntable. A second connecting rod is rotatably installed on the side wall of the second toothed plate. The second connecting rod is rotatably connected to the eccentric position on the side wall of the second turntable.

[0008] In the above-mentioned multi-stage crushing device for ore processing, second sliders are integrally formed on the side walls on both sides of the second toothed plate. A third chute is formed on the inner wall of the outer shell. The second sliders are slidably installed inside the third chute.

[0009] In the above-mentioned multi-stage crushing device for ore processing, a third slider is integrally formed on the side wall of the sliding frame. A second chute is formed on the inner wall of the outer shell. The third slider is slidably installed inside the second chute. The bottom of the sliding frame is fixedly connected to the top of the second toothed plate.

[0010] In the above-mentioned multi-stage crushing device for ore processing, a first inclined surface and a second inclined surface are respectively provided on the tops of the first cross frame and the second cross frame. A convex tooth is integrally formed on the side wall of the first cross frame close to the first jaw plate. The convex tooth is slidably installed inside the groove on the side wall of the first jaw plate.

[0011] In the above-mentioned multi-stage crushing device for ore processing, a convex platform is integrally formed inside the groove on the side wall of the first jaw plate. A plurality of uniformly distributed fourth chutes are formed on the side wall of the second cross frame. A sliding block is slidably installed inside each of the fourth chutes. The sliding block abuts against the convex platform.

[0012] Compared with the existing technology, the advantages of the present invention are as follows: 1. Through the cooperation between the first tooth plate and the second tooth plate, during the reciprocating sliding of the second tooth plate, when the second tooth plate slides upward, the tooth surface on the side wall of the second tooth plate drives the ore to move upward, causing the ore to abut against the bottom of the tooth surface on one side wall of the first tooth plate. At this time, the bottom of the tooth surface on one side wall of the first tooth plate crushes the ore, thereby achieving tertiary crushing and refining the ore debris. When the second tooth plate slides downward, the bottom of the tooth surface on the side wall of the second tooth plate drives the ore to move downward, causing the ore to abut against the tooth surface on one side wall of the first tooth plate. At this time, the bottom of the tooth surface on the side wall of the second tooth plate crushes the ore, thereby achieving continuous tertiary crushing, improving work efficiency. At the same time, when the second tooth plate slides downward, the bottom of the tooth plate is located inside the discharge port, causing the bottom of the second tooth plate to abut against the ore debris inside the discharge port, preventing the ore debris from clogging inside the discharge port.

[0013] 2. Through the cooperation between the first cross frame and the second jaw plate, during the process of the sliding frame driving the first cross frame to move upward, the first inclined surface abuts against and drives the large pieces of ore between the first jaw plate and the second jaw plate to move upward, causing the small pieces of ore between the first jaw plate and the second jaw plate to fall between the third jaw plate and the first jaw plate. At this time, the first cross frame further reduces the crushing angle of the second jaw plate, thereby improving the crushing effect of the second jaw plate. During the process of the sliding frame driving the first cross frame to reciprocate, the convex teeth move along with the first cross frame, causing the convex teeth to clean the inside of the groove on one side wall of the first jaw plate, preventing the ore debris from getting stuck inside the groove on one side wall of the first jaw plate and affecting the crushing effect of the second jaw plate.

[0014] 3. Through the cooperation between the first cross frame and the third jaw plate, during the process of the sliding frame driving the first cross frame to move downward, the bottom of the first cross frame abuts downward against the ore debris between the third jaw plate and the first jaw plate, reducing the movement space of the ore, preventing the ore debris between the third jaw plate and the first jaw plate from moving upward during the process of the angle between the third jaw plate and the first jaw plate decreasing, thereby improving the crushing effect of the third jaw plate.

[0015] 4. Through the cooperation between the second cross frame and the second jaw plate, during the process of the sliding frame driving the second cross frame to move upward, the sliding block slides towards the second jaw plate, causing the sliding block to abut against and drive upward the large pieces of ore stuck between the first jaw plate and the second jaw plate. The sliding block further reduces the crushing angle of the second jaw plate, causing the large pieces of ore stuck between the first jaw plate and the second jaw plate to be crushed, thereby improving the crushing effect of the second jaw plate. During the process of the sliding frame driving the second cross frame to move downward, the bottom of the sliding block and the bottom of the second cross frame abut downward against the ore between the first jaw plate and the second jaw plate, reducing the movement space of the ore, thereby improving the crushing effect of the second jaw plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is an installation schematic diagram of the internal structure of the housing in the present invention; Figure 3 It is a cross-sectional view of the overall structure of the present invention; Figure 4 It is a cross-sectional view of the housing structure in the present invention; Figure 5 It is a schematic structural view of the first jaw plate and the second jaw plate in the present invention; Figure 6 It is a schematic structural view of the second tooth plate and the sliding frame in the present invention; Figure 7 It is a partial structural schematic view of the sliding frame in the present invention; Figure 8 It is a schematic structural view of the second tooth plate and the third jaw plate in the present invention.

[0017] In the figure: 1. Housing; 111. Feeding port; 112. Discharging port; 121. First jaw plate; 122. First tooth plate; 131. First chute; 132. Second chute; 133. Fixed rod; 134. Third chute; 21. Second jaw plate; 211. First motor; 212. First connecting rod; 213. First turntable; 214. Boss; 22. Third jaw plate; 221. First slider; 23. Second tooth plate; 231. Second connecting rod; 232. Second turntable; 233. Reducer; 234. Second motor; 235. Second slider; 31. Sliding frame; 311. First cross frame; 312. Second cross frame; 313. Sliding block; 314. Third slider; 315. Convex teeth; 316. Fourth chute; 317. First inclined surface; 318. Second inclined surface. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0019] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation 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 orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0020] Refer to Figure 1 - Figure 8As shown in the figure, a multi-stage crushing device for ore processing includes a housing 1. Feed inlets 111 and discharge outlets 112 are respectively provided at the top and bottom of the housing 1. A first jaw plate 121 and a first toothed plate 122 are fixedly installed on the inner wall of the housing 1. The first jaw plate 121 is located above the first toothed plate 122. A second jaw plate 21, a third jaw plate 22 and a second toothed plate 23 are movably installed between the feed inlet 111 and the discharge outlet 112. The third jaw plate 22 is located between the second jaw plate 21 and the second toothed plate 23. The second jaw plate 21 and the third jaw plate 22 both correspond to the first jaw plate 121, and the second toothed plate 23 corresponds to the first toothed plate 122. A sliding frame 31 is slidably installed between the first jaw plate 121 and the second jaw plate 21. A first cross frame 311 and a second cross frame 312 are integrally formed on the side wall of the sliding frame 31. The side walls of the first cross frame 311 and the second cross frame 312 are both in contact with the side wall of the first jaw plate 121.

[0021] As Figure 1 and Figures 3 - 5 shown in the figure, a fixed rod 133 is integrally formed inside the housing 1. The bottom of the second jaw plate 21 is rotatably installed on the outside of the fixed rod 133. A first connecting rod 212 is rotatably installed on the side wall of the second jaw plate 21. A first motor 211 is fixedly installed on the side wall of the housing 1. The output shaft of the first motor 211 is fixedly connected to a first turntable 213. The side wall of the first connecting rod 212 is rotatably connected to the eccentric position on the side wall of the first turntable 213.

[0022] Among them, the first motor 211 drives the first turntable 213 to rotate, so that the first turntable 213 drives the second jaw plate 21 to swing reciprocally through the first connecting rod 212. During the reciprocal swing of the second jaw plate 21, primary crushing is carried out through the continuously changing angle between the second jaw plate 21 and the first jaw plate 121.

[0023] As Figure 3 , Figure 4 and Figure 6 shown in the figure, a second motor 234 and a speed reducer 233 are fixedly installed inside the housing 1. The output shaft of the second motor 234 and the input shaft of the speed reducer 233 are fixedly connected. The output shaft of the speed 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 toothed plate 23. The second connecting rod 231 is rotatably connected to the eccentric position on the side wall of the second turntable 232. Second sliders 235 are integrally formed on the side walls on both sides of the second toothed plate 23. A third chute 134 is opened on the inner wall of the housing 1. The second sliders 235 are slidably installed inside the third chute 134.

[0024] Among them, the working principle of the second toothed plate 23 is as follows: The second motor 234 drives the second turntable 232 to rotate, so that the second turntable 232 drives the second toothed plate 23 to reciprocate through the second connecting rod 231. The speed reducer 233 is used to reduce the rotation speed of the second turntable 232 and increase the torque of the second turntable 232. At this time, the rotation speed of the second turntable 232 is less than that of the first turntable 213. During the reciprocating sliding of the second toothed plate 23, when the second toothed plate 23 slides upward, the tooth surface on the side wall of the second toothed plate 23 drives the ore to move upward, so that the ore abuts against the bottom of the tooth surface on the side wall of the first toothed plate 122. At this time, the bottom of the tooth surface on the side wall of the first toothed plate 122 crushes the ore, thus realizing tertiary crushing and refining the ore debris. When the second toothed plate 23 slides downward, the bottom of the tooth surface on the side wall of the second toothed plate 23 drives the ore to move downward, so that the ore abuts against the tooth surface on the side wall of the first toothed plate 122. At this time, the bottom of the tooth surface on the side wall of the second toothed plate 23 crushes the ore, thus realizing continuous tertiary crushing and improving the working efficiency. At the same time, when the second toothed plate 23 slides downward, the bottom of the second toothed plate 23 is located inside the discharge port 112, so that the bottom of the second toothed plate 23 abuts against the ore debris inside the discharge port 112, preventing the ore debris from clogging inside the discharge port 112.

[0025] Further referring to Figure 3 for illustration, the distance between the tops of the first toothed plate 122 and the second toothed plate 23 is greater than the distance between the bottoms, making the ore debris crushed by the first toothed plate 122 and the second toothed plate 23 smaller. At the same time, the first toothed plate 122 and the second toothed plate 23 with different bottom spacings can be replaced according to requirements, so as to adjust the size of the ore debris after tertiary crushing.

[0026] As Figures 2 - 4 and Figure 8 shown, the bottom of the third jaw plate 22 is rotatably connected to the top of the second toothed plate 23. A first slider 221 is integrally formed on the side wall of the top of the third jaw plate 22, and a first chute 131 is opened on the inner wall of the housing 1. The first slider 221 is slidably installed inside the first chute 131.

[0027] Among them, the working principle of the third jaw plate 22 is as follows: The first chute 131 is inclined. During the reciprocating sliding of the second toothed plate 23, the second toothed plate 23 drives the third jaw plate 22 to reciprocate. When the second toothed plate 23 slides upward, the first slider 221 slides upward, increasing the angle between the third jaw plate 22 and the first jaw plate 121, so that the third jaw plate 22 collects the ore debris above. When the second toothed plate 23 slides downward, the first slider 221 slides downward, reducing the angle between the third jaw plate 22 and the first jaw plate 121, so that the third jaw plate 22 performs secondary crushing on the ore debris between the third jaw plate 22 and the first jaw plate 121.

[0028] As Figures 2 - 4 and Figure 6As shown, a slider three 314 is integrally formed on the side wall of the sliding frame 31. A second chute 132 is provided on the inner wall of the outer shell 1. The slider three 314 is slidably installed inside the second chute 132. A fixed connection is provided between the bottom of the sliding frame 31 and the top of the second toothed plate 23.

[0029] Among them, the sliding frame 31 is made of high-strength alloy steel.

[0030] As Figure 2 、 Figure 6 and Figure 7 shown, a first inclined surface 317 and a second inclined surface 318 are respectively provided on the tops of the first cross frame 311 and the second cross frame 312. A convex tooth 315 is integrally formed on the side wall of the first cross frame 311 close to the first jaw plate 121. The convex tooth 315 is slidably installed inside the groove on the side wall of the first jaw plate 121.

[0031] Among them, the working principle of the first cross frame 311 is as follows: during the reciprocating sliding of the second toothed plate 23, the second toothed plate 23 drives the sliding frame 31 to reciprocate. When the second toothed plate 23 slides upward, the sliding frame 31 drives the first cross frame 311 to move upward. The first inclined surface 317 abuts against and drives the large ore between the first jaw plate 121 and the second jaw plate 21 to move upward, so that the small ore between the first jaw plate 121 and the second jaw plate 21 falls between the third jaw plate 22 and the first jaw plate 121. At this time, the crushing angle of the second jaw plate 21 is further reduced through the first cross frame 311, thereby improving the crushing effect of the second jaw plate 21. When the second toothed plate 23 slides downward, the sliding frame 31 drives the first cross frame 311 to move downward, so that the bottom of the first cross frame 311 abuts downward against the ore debris between the third jaw plate 22 and the first jaw plate 121, avoiding the upward movement of the ore debris between the third jaw plate 22 and the first jaw plate 121 during the process of the reduction of the angle between the third jaw plate 22 and the first jaw plate 121, thereby improving the crushing effect of the third jaw plate 22. During the process of the sliding frame 31 driving the first cross frame 311 to reciprocate, the convex tooth 315 moves along with the first cross frame 311, so that the convex tooth 315 cleans the inside of the groove on the side wall of the first jaw plate 121, avoiding the ore debris getting stuck inside the groove on the side wall of the first jaw plate 121 and affecting the crushing effect of the second jaw plate 21.

[0032] As Figure 5 and Figure 7 shown, a convex platform 214 is integrally formed inside the groove on the side wall of the first jaw plate 121. A plurality of uniformly distributed fourth chutes 316 are provided on the side wall of the second cross frame 312. A sliding block 313 is slidably installed inside each fourth chute 316. The sliding block 313 abuts against the convex platform 214.

[0033] Among them, the working principles of the cross frame II 312 and the sliding block 313 are as follows: when the tooth plate II 23 slides upward, the sliding frame 31 drives the cross frame II 312 to move upward, so that the sliding block 313 abuts against the side wall of the boss 214, and the sliding block 313 slides in the direction of the jaw plate II 21. At this time, the sliding block 313 abuts against and drives upward the large ore stuck between the jaw plate I 121 and the jaw plate II 21. The large ore stuck between the jaw plate I 121 and the jaw plate II 21 is broken by the sliding block 313 again, reducing the crushing angle of the jaw plate II 21 once more, so as to break the large ore stuck between the jaw plate I 121 and the jaw plate II 21 and improve the crushing effect of the jaw plate II 21. When the tooth plate II 23 slides downward, the sliding frame 31 drives the cross frame II 312 to move downward, so that the bottom of the sliding block 313 and the bottom of the cross frame II 312 abut against the ore between the jaw plate I 121 and the jaw plate II 21 downward, reducing the movement space of the ore, thereby improving the crushing effect of the jaw plate II 21.

[0034] The specific working principle and usage method of the present invention will be explained in detail below: The ore to be crushed is transported to the inside of the feed inlet 111 through the feeding device. The first motor 211 and the second motor 234 are started. The first motor 211 drives the second jaw plate 21 to swing reciprocally. During the reciprocal swing of the second jaw plate 21, primary crushing is performed through the continuously changing angle between the second jaw plate 21 and the first jaw plate 121. The ore debris after primary crushing falls between the third jaw plate 22 and the first jaw plate 121. The second motor 234 drives the second toothed plate 23 to slide reciprocally. The second toothed plate 23 drives the third jaw plate 22 and the sliding frame 31 to move. When the second toothed plate 23 drives the third jaw plate 22 and the sliding frame 31 to slide upward, the angle between the third jaw plate 22 and the first jaw plate 121 increases, so that the third jaw plate 22 collects the ore debris above. The first cross frame 311 and the second cross frame 312 respectively contact and upwardly drive the large ore between the first jaw plate 121 and the second jaw plate 21 and the large ore stuck between the first jaw plate 121 and the second jaw plate 21 through the first inclined surface 317 and the sliding block 313, so that the small ore between the first jaw plate 121 and the second jaw plate 21 falls between the third jaw plate 22 and the first jaw plate 121. At this time, the crushing angle of the second jaw plate 21 is further reduced through the first cross frame 311 and the sliding block 313, so that the large ore stuck between the first jaw plate 121 and the second jaw plate 21 is crushed, thereby improving the crushing effect of the second jaw plate 21. When the second toothed plate 23 drives the third jaw plate 22 to slide downward, the angle between the third jaw plate 22 and the first jaw plate 121 decreases, so that the third jaw plate 22 performs secondary crushing on the ore debris between the third jaw plate 22 and the first jaw plate 121. At the same time, the sliding block 313 downwardly contacts the ore between the first jaw plate 121 and the second jaw plate 21 through the bottom, reducing the movement space of the ore and improving the crushing effect of the second jaw plate 21. The first cross frame 311 downwardly contacts the ore debris between the third jaw plate 22 and the first jaw plate 121 through the bottom, reducing the movement space of the ore debris, thereby improving the crushing effect of the third jaw plate 22. The ore debris after secondary crushing falls between the first toothed plate 122 and the second toothed plate 23. Through the reciprocal sliding of the second toothed plate 23, the tooth surfaces on the side walls of the first toothed plate 122 and the second toothed plate 23 continuously crush the ore debris between the first toothed plate 122 and the second toothed plate 23, thereby realizing continuous tertiary crushing, refining the ore debris, and improving the working efficiency at the same time.

[0035] Further explanation, for the above fixed connection, unless otherwise clearly specified and limited, it should be understood in a broad sense. For example, it can be welding, gluing, or integrally formed setting, etc., which are common means well-known to those skilled in the art.

[0036] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention should cover within the protection scope of the present invention by making equivalent substitutions or changes according to the technical solution and inventive concept 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 housing (1) are respectively provided with a feed inlet (111) and a discharge outlet (112). The inner wall of the housing (1) is fixedly installed with a first jaw plate (121) and a first toothed plate (122). The first jaw plate (121) is located above the first toothed plate (122). A second jaw plate (21), a third jaw plate (22) and a second toothed plate (23) are movably installed between the feed inlet (111) and the discharge outlet (112). The third jaw plate (22) is located between the second jaw plate (21) and the second toothed plate (23). The second jaw plate (21) and the third jaw plate (22) both correspond to the first jaw plate (121), and the second toothed plate (23) corresponds to the first toothed plate (122). A sliding frame (31) is slidably installed between the first jaw plate (121) and the second jaw plate (21). The side walls of the sliding frame (31) are integrally formed with a first cross frame (311) and a second cross frame (312). The side walls of the first cross frame (311) and the second cross frame (312) are both in contact with the side wall of the first jaw plate (121); The tops of the first cross frame (311) and the second cross frame (312) are respectively provided with a first inclined surface (317) and a second inclined surface (318). A convex tooth (315) is integrally formed on the side wall of the first cross frame (311) close to the first jaw plate (121). The convex tooth (315) is slidably installed inside the groove on the side wall of the first jaw plate (121); A convex platform (214) is integrally formed inside the groove on the side wall of the first jaw plate (121). A plurality of uniformly distributed fourth chutes (316) are formed on the side wall of the second cross frame (312). A sliding block (313) is slidably installed inside each of the fourth chutes (316). The sliding block (313) is in contact with the convex platform (214).

2. The multi-stage crushing device for ore processing according to claim 1, wherein: A fixed rod (133) is integrally formed inside the housing (1). The bottom of the second jaw plate (21) is rotatably installed on the outside of the fixed rod (133). A first connecting rod (212) is rotatably installed on the side wall of the second jaw plate (21). A first motor (211) is fixedly installed on the side wall of the housing (1). The output shaft of the first motor (211) is fixedly connected to a first turntable (213). The side wall of the first connecting rod (212) is rotatably connected to the eccentric position on the side wall of the first turntable (213).

3. The multi-stage crushing device for ore processing according to claim 1, wherein: The bottom of the third jaw plate (22) is rotatably connected to the top of the second toothed plate (23). A first slider (221) is integrally formed on the side wall of the top of the third jaw plate (22). A first chute (131) is formed on the inner wall of the housing (1). The first slider (221) is slidably installed inside the first chute (131).

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

5. The multi-stage crushing device for ore processing according to claim 1, wherein: On both sides of the second toothed plate (23), a second slider (235) is integrally formed on the side walls. A third chute (134) is provided on the inner wall of the outer shell (1), and the second slider (235) is slidably installed inside the third chute (134).

6. The multi-stage crushing device for ore processing according to claim 1, characterized in that: On the side wall of the sliding frame (31), a third slider (314) is integrally formed. A second chute (132) is provided on the inner wall of the outer shell (1), and the third slider (314) is slidably installed inside the second chute (132). A fixed connection is provided between the bottom of the sliding frame (31) and the top of the second toothed plate (23).

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