Device capable of being used for ore crushing and primary selection

Abstract

The utility model discloses a device capable of being used for ore crushing and primary selection, which comprises a crusher, wherein a bottom frame is arranged below the crusher; a first screening assembly, a second screening assembly and a third screening assembly which are distributed up and down are arranged on the side edge of the bottom frame, each of the first screening assembly, the second screening assembly and the third screening assembly comprises a center shaft, a screening net frame and an output mechanism, the center shafts penetrate through the centers of the screening net frames, and the center shafts drive the screening net frames to rotate; the output mechanism is arranged above the screening net frame, one end of the output mechanism directly faces the center of the screening net frame, and meanwhile the other end of the output mechanism protrudes out of the screening net frame. According to the ore crushing and screening device, the screening assembly is arranged below the crusher, ore can be screened immediately after being crushed, the current situation that conveying equipment needs to be arranged to transfer the ore due to the fact that the crusher and the screening assembly are arranged separately is changed, and the production space occupied by the ore crushing and screening device is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to ore processing equipment field, concretely is a device that can be used for ore crushing and primary selection. BACKGROUND

[0002] Ore refers to mineral aggregates that can extract useful components or have certain properties that can be utilized, which can be used for steel production, non-ferrous metal extraction, chemical raw material manufacturing and other processing.

[0003] Many ores have different particle sizes after mining, and often have large blockiness. For example, in the smelting process of metal ores, if the ore blockiness is too large, it will lead to too small contact surface of chemical reaction. Taking iron ore smelting as an example, the blocky iron ore is directly used for blast furnace iron smelting, which will make the reduction reaction rate of iron very slow, because the iron minerals inside the ore are difficult to fully contact with the reducing agent (such as carbon monoxide). Through crushing, the ore can be changed into smaller particles, increasing the contact area of the ore and the reaction reagent, thereby improving the chemical reaction efficiency.

[0004] Ore will be mixed with many gangue minerals and other impurities during mining. After crushing, the ore can be separated according to particle size through screening, and some gangue minerals or impurities with smaller particle size can be screened out. For example, in copper ore dressing, the crushed ore is screened, and impurities such as clay with smaller particle size can be removed, thereby improving the grade of copper minerals in the ore, so that the subsequent ore dressing process can more effectively extract copper elements. Also, in the production of building sand and gravel, the crushed ore needs to be screened to obtain products with different particle sizes, such as coarse sand, medium sand and fine sand, to meet the requirements of different construction stages such as concrete production for sand and gravel particle size.

[0005] At present, the equipment for ore crushing and screening is usually set independently. In order to transport the crushed ore to the screening equipment, conveying equipment is needed to connect the ore crushing equipment and the screening equipment. This operation not only leads to a complicated processing flow, increases the equipment floor area and investment cost, but also easily causes material spilling, blocking and other problems due to multiple transportation of the ore between different equipment, seriously affecting the continuity and stability of production.

[0006] For example, the commonly used impact crusher and vibrating screen are set independently, and a belt conveyor needs to be set between them to convey the ore output from the bottom of the crusher to the vibrating screen, and the vibrating screen is used to preliminarily screen the crushed ore to screen out ore particles within a certain particle size range. CONTENT OF THE UTILITY MODEL

[0007] The utility model discloses a purpose at providing a device that can be used for ore crushing and primary selection, aiming at improving the equipment independent setting of ore crushing and primary selection, increasing the equipment floor space and the investment cost problem.

[0008] The utility model discloses a device that can be used for ore crushing and primary selection, including the crusher, the bottom of crusher is provided with the chassis, the side of chassis is provided with the first screening subassembly, the second screening subassembly, the third screening subassembly of distribution up and down, first screening subassembly, second screening subassembly and third screening subassembly all include the central shaft, the screening net frame and the output mechanism, the center of central shaft is passed through the center setting of screening net frame, and central shaft drives the rotation of screening net frame, the output mechanism sets up the top of screening net frame, and the one end of output mechanism is opposite the center of screening net frame, and simultaneously the other end of output mechanism projects screening net frame setting, the central shaft of first screening subassembly, second screening subassembly and third screening subassembly is detachably connected.

[0009] Preferably, the top of the central shaft is fixedly provided with a top cylinder, a polygonal column is fixedly arranged at the center of the inner side of the top cylinder, and a polygonal groove is arranged on the bottom surface of the central shaft; the bottom of the central shaft is connected by bolts and inserted into the adjacent top cylinder, and the polygonal column is inserted into the polygonal groove.

[0010] Preferably, a support frame is arranged on the side of the chassis, the support frame comprises a base, a through hole is arranged in the middle of the base, a motor is arranged above the base, the bottom of the central shaft of the third screening subassembly is connected and inserted into the through hole of the base through a bearing, and the bottom of the central shaft is connected with the power output shaft of the motor.

[0011] Preferably, the screening net frame comprises a screening net, a frame and a central frame, the central frame is arranged in the middle of the inner side of the frame, the central frame is sleeved on the central shaft, and the screening net is arranged in the area surrounded by the frame and the central frame.

[0012] Preferably, a plurality of screw rods are fixedly arranged on the edge of the bottom of the central frame, a sleeve pipe is arranged below the central frame, the sleeve pipe is sleeved on the central shaft through bolts, the top of the sleeve pipe is fixedly provided with an ear plate, the screw rods are arranged through the ear plate, and nuts are threadedly sleeved on the bottom of the screw rods.

[0013] Preferably, the output mechanism comprises a first wheel body, a second wheel body and an annular belt, the diameter of the first wheel body is greater than the diameter of the second wheel body, the first wheel body is sleeved on the central shaft, the second wheel body is arranged on the outer side of the screening net frame, the two ends of the annular belt are sleeved on the first wheel body and the second wheel body respectively, and a plurality of driving devices are arranged on the side wall.

[0014] Preferably, the first wheel body comprises two half wheel bodies and two clamping arc plates, the two clamping arc plates are arranged at the inner sides of the two half wheel bodies respectively, and the two clamping arc plates are sleeved on the central shaft.

[0015] Preferably, a shielding shell is arranged at the edge above the screening rack, the shielding shell comprises a vertical frame and a shell, the vertical frame and the shell are arranged in an arc shape with a central angle less than 360 degrees, the shell is arranged at the inner side of the vertical frame, and the bottom surfaces of the vertical frame and the shell are arranged close to the top surface of the frame.

[0016] Preferably, the annular belt is arranged through the gaps of the vertical frame and the shell; the gaps of the multiple groups of screening racks are directed to different directions; the end portions of the vertical frame are fixedly provided with supports; and the two ends of the shaft body of the second wheel body are sleeved with bearing seats, and the bearing seats are arranged on the supports.

[0017] Preferably, multiple square tubes are fixedly arranged at the outer side of the vertical frame, multiple through holes are arranged on the base, and vertical rods are arranged through the through holes and the square tubes.

[0018] Compared with the prior art, the utility model has the beneficial effects that:

[0019] 1、The utility model discloses a screening assembly is arranged below the crusher, can carry out screening treatment to the ore immediately after crushing, changes the present situation that the crusher and the screening assembly are arranged separately and need to set up conveying equipment to transfer the ore, reduces the production space occupied by the ore crushing and screening equipment.

[0020] 2、The utility model discloses multiple groups of screening assemblies are arranged in the upper and lower distribution, can realize the screening of the ore under the action of the screening assembly, sorts out the ore of different range particle sizes, and provides the convenience for conveying to different regions and subsequent processing.

[0021] 3、The utility model discloses a screening rack and a central shaft, and the screening rack is sleeved on the central shaft, and the central shaft can rotate under the action of the motor, therefore, the screening rack can move relative to the discharge port of the crusher, and provides support for realizing the screening of batch ore, and the output mechanism is arranged on the screening rack, and the ore accumulated on the screening rack can be cleaned under the action of the output mechanism, thereby providing convenience for realizing the screening of batch ore. DRAWINGS

[0022] Figure 1 It is the structure schematic diagram of the whole utility model;

[0023] Figure 2 It is the structure schematic diagram of the screening assembly, the motor and the support frame of the utility model;

[0024] Figure 3 It is the structure schematic diagram of the support frame of the utility model;

[0025] Figure 4 is a structural schematic view of the first screening assembly of the utility model;

[0026] Figure 5 is a first structural schematic view of the screening net frame of the utility model;

[0027] Figure 6 is a second structural schematic view of the screening net frame of the utility model;

[0028] Figure 7 is a structural schematic view of the shielding shell of the utility model;

[0029] Figure 8 is a structural schematic view of the output mechanism of the utility model;

[0030] Figure 9 is a structural schematic view of the first wheel body of the utility model;

[0031] Figure 10 is a first structural schematic view of the central shaft of the utility model;

[0032] Figure 11 is a second structural schematic view of the central shaft of the utility model;

[0033] Figure 12 is a structural schematic view of the third screening assembly of the utility model.

[0034] In the figure: 1, crusher; 11, underframe; 2, first screening assembly; 21, central shaft; 211, top cylinder; 212, polygonal column; 213, polygonal groove; 22, screening net frame; 221, screening net; 222, frame; 223, central frame; 224, sleeve; 225, screw; 226, ear plate; 23, shielding shell; 231, vertical frame; 232, shell; 233, square tube; 234, support; 24, output mechanism; 241, first wheel body; 242, annular belt; 243, driving device; 244, second wheel body; 245, half wheel body; 246, clamping arc plate; 3, second screening assembly; 4, third screening assembly; 5, motor; 6, support frame; 61, perforation; 62, vertical rod; 63, base. DETAILED DESCRIPTION

[0035] In the utility model, unless another explicit provision and limitation, the terms "mounting", "connecting", "connecting", "fixing" and other terms should be broad sense understanding, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through the intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the above terms can be understood according to the specific meaning of the terms in the utility model.

[0036] Further description will be made in combination with the accompanying drawings and specific embodiments:

[0037] Embodiment 1

[0038] As Figure 1 shown, in order to realize the preliminary screening of the ore after crushing, and reduce the production space occupied by the ore crushing and screening equipment, the embodiment provides a new ore crushing and screening device. The device comprises a crusher 1 and a screening assembly arranged at the side of the crusher 1. The screening assembly receives the ore output from the crusher 1 and realizes the screening of the ore under the action of the screening assembly, so as to separate the ore with different particle sizes and facilitate the subsequent processing by conveying it to different areas.

[0039] The crusher 1 can be arranged as an impact crusher, and the impact crusher is a device that has been disclosed. Here, a brief introduction is given. The crusher 1 comprises a body part, a rotor part, an impact plate part, a feed inlet, a discharge outlet, etc. The body part comprises a casing, a support. The rotor part comprises a main shaft, a hammer disc, etc.; the main shaft is the core component of the rotor, and is connected with the power output shaft of the motor, bearing the important task of transmitting power and supporting the rotation of the rotor; the hammer disc (for some crushers, it is a plate hammer) is a component directly involved in ore crushing. The hammer disc is generally installed on the main shaft and moves at high speed with the rotation of the main shaft. When the ore enters the crusher, the hammer disc collides with the ore to crush the ore. The impact plate part is a component corresponding to the hammer disc (or plate hammer) in the crusher, which mainly plays the role of bearing the impact of the rebound of the ore and further crushing the ore. The impact plate is generally installed inside the crusher, opposite to the hammer disc. When the ore is hit by the hammer disc and flies to the impact plate, the ore collides with the impact plate and is crushed again. The surface shape and angle of the impact plate can be adjusted according to the characteristics of the ore and the crushing requirements. The feed inlet is generally located at the top of the crusher, and sometimes a protective device is installed around the feed inlet to prevent the ore from splashing out and injuring people during the feeding process. The discharge outlet is generally located at the bottom of the crusher, and is connected with the subsequent conveying equipment or screening equipment for convenience.

[0040] As Figure 1 , Figure 2As shown, in order to make the crusher 1 stable, a chassis 11 is arranged below the crusher 1 to stably support the crusher 1. A support frame 6 is further arranged on the side of the chassis 11 to support the screening assembly, and the edge of the screening assembly is located directly below the discharge port of the crusher 1, so that the ore output from the crusher 1 naturally falls on the screening assembly. A motor 5 is arranged on the support frame 6 to control the rotation of the screening assembly, which in turn drives the ore output from the crusher 1 away from the crusher 1 under the action of the screening assembly, and the ore with a particle size smaller than the aperture of the screening assembly falls down, which facilitates the cleaning of the ore above the screening assembly. The number of screening assemblies can be determined according to actual needs, such as one set, two sets, three sets, etc. In the case of multiple sets of screening assemblies, the multiple sets of screening assemblies are arranged in an up-down distribution, and the apertures decrease from top to bottom, so that the multiple sets of screening assemblies can realize the classification and screening of the ore. In this embodiment, three sets of screening assemblies are taken as an example for introduction, and the three sets of screening assemblies are respectively named as a first screening assembly 2, a second screening assembly 3, and a third screening assembly 4.

[0041] As shown in Figures 4-6 , in order to realize the screening of the ore, the first screening assembly 2, the second screening assembly 3, and the third screening assembly 4 each include a screening net frame 22, which includes a screening net 221, a frame 222, and a center frame 223. The center frame 223 is arranged at the middle of the inner side of the frame 222, and the screening net 221 is arranged in the area surrounded by the frame 222 and the center frame 223 and directly faces the discharge port of the crusher 1. Therefore, the ore output from the crusher 1 directly falls on the screening net 221, and the ore with a particle size smaller than the aperture of the screening net 221 passes through the screening net 221 and falls on the next screening net 221, so that the multiple screening nets 221 can realize the multi-stage screening of the ore.

[0042] As shown in Figure 2 , Figure 3 , Figure 4 , Figure 12 , in order to control the rotation of the ore supported by the up-down distributed screening net frames 22 and away from the crusher 1, the first screening assembly 2, the second screening assembly 3, and the third screening assembly 4 each further include a center shaft 21, and the center frame 223 is sleeved on the center shaft 21. The multiple center shafts 21 arranged in an up-down distribution are detachably connected at the head and tail, and the bottom of the lowermost center shaft 21 is inserted into the base 63 of the support frame 6 through a bearing connection, and the lowermost center shaft 21 is connected with the power output shaft of the motor 5 through a chain wheel and a chain or a belt wheel and a belt, so that the rotation of the center shaft 21 can be controlled under the action of the motor 5. Since the center shaft 21 stably supports the screening net frame 22, the rotation of the center shaft 21 can control the rotation of the screening net frame 22 and in turn control the ore away from the crusher 1. The type of the motor 5 is various, and can be selected as a direct current motor, an alternating current motor, even a servo motor, a stepping motor, etc. according to actual needs.

[0043] As Figure 10 , Figure 11 shown, in order to realize the upper and lower distribution of the center shaft 21 detachable connection, the top of the center shaft 21 is fixedly provided with a top cylinder 211, a plurality of polygonal columns 212 are fixedly arranged in the inside of the top cylinder 211, and a plurality of polygonal grooves 213 are arranged on the bottom surface of the center shaft 21. Therefore, when connecting the adjacent center shaft 21, the bottom of the upper center shaft 21 is connected by inserting the bolt into the inside of the top cylinder 211 of the lower center shaft 21, and the polygonal column 212 is inserted into the polygonal groove 213, thereby realizing the power transmission of the adjacent center shaft 21 under the premise of limiting the relative position of the adjacent center shaft 21.

[0044] As Figure 6 shown, in order to make the center frame 223 sleeved on the center shaft 21, a sleeve 224 is arranged below the center frame 223, the sleeve 224 is sleeved on the center shaft 21 by bolt connection, and the center frame 223 is placed on the sleeve 224, so that the center frame 223 is stably placed relative to the center shaft 21 under the limitation of the sleeve 224.

[0045] As Figure 6 shown, in order to make the center frame 223 stationary installation relative to the center shaft 21, a plurality of screw rods 225 are fixedly arranged on the edge of the bottom of the center frame 223, an ear plate 226 is fixedly arranged on the top of the sleeve 224, the screw rod 225 penetrates through the ear plate 226, and a nut is threadedly sleeved on the bottom of the screw rod 225. This arrangement can control the rotation of the center frame 223 and the screening net 221 under the condition that the center shaft 21 rotates.

[0046] As Figure 4 shown, when the ore is away from the crusher 1, in order to make the ore trapped on the screening net 221 separate from the screening net 221, so as to realize the screening treatment of the batch ore through the screening net 221, an output mechanism 24 is arranged above each screening net frame 22, a plurality of sets of output mechanisms 24 are different in direction, and thus the ore on the screening net 221 can be controlled to separate from the screening net 221 under the action of the output mechanism 24.

[0047] As Figure 8As shown, specifically, the output mechanism 24 includes a first wheel body 241, a second wheel body 244, and an annular belt 242, the diameter of the first wheel body 241 is greater than the diameter of the second wheel body 244, the first wheel body 241 is sleeved on the central shaft 21, and the second wheel body 244 is arranged outside the screening net rack 22, both ends of the annular belt 242 are sleeved on the first wheel body 241 and the second wheel body 244, and a plurality of belt driving devices 243 are arranged on the side wall. When the central shaft 21 rotates, the first wheel body 241 rotates with the central shaft 21, thereby controlling the rotation of the annular belt 242. Under the condition that the annular belt 242 rotates, the belt driving device 243 contacts the ore, thereby controlling the ore to move along the length direction of the annular belt 242, and the ore cleaning is realized. Through the above arrangement, the rotation of the annular belt 242 is controlled by the central shaft 21. In actual manufacturing, the first wheel body 241 can be connected and sleeved on the central shaft 21 through a bearing, and another motor is arranged on the side of the second wheel body 244, which controls the rotation of the annular belt 242 under the action of the motor. The wheel body and the annular belt 242 can be arranged as a synchronous wheel and a synchronous belt, and the annular belt 242 is in a straight state when it is installed.

[0048] As shown in Figure 9 , in order to be able to disassemble the output mechanism 24 according to the needs, the first wheel body 241 includes two half wheel bodies 245 and two clamping arc plates 246, the two clamping arc plates 246 are fixedly arranged on the inner sides of the two half wheel bodies 245, and the two clamping arc plates 246 are connected and spliced on the central shaft 21 through bolts, and the ends of the two half wheel bodies 245 are connected through bolts, thereby realizing the stable connection of the first wheel body 241 and the central shaft 21, and providing convenience for disassembling the first wheel body 241 according to the needs.

[0049] Example 2

[0050] As shown in Figure 4 , Figure 7 , on the basis of example 1, in order to limit the position of the ore relative to the screening net 221, a shielding shell 23 is arranged on the edge above the screening net rack 22, the shielding shell 23 includes a vertical frame 231 and a shell 232, both the vertical frame 231 and the shell 232 are arranged in an arc shape with a central angle less than 360°, the shell 232 is mounted on the inner side of the vertical frame 231, and the bottom surfaces of the vertical frame 231 and the shell 232 are arranged close to the top surface of the frame 222, and the annular belt 242 penetrates the gap of the vertical frame 231 and the shell 232. Therefore, the shell 232 cooperates with the output mechanism 24 to limit the movement of the ore along the predetermined direction, and the ore is controlled to separate from the gap of the shell 232 under the action of the annular belt 242. In actual production, a belt conveyor or other equipment can be arranged below the gap of the shell 232, thereby moving the ore to other areas to complete the next process production.

[0051] As shown in Figure 7 ,Figure 8 As shown, to ensure stable installation of the second wheel 244, a bracket 234 is fixedly installed at the end of the frame 231, and bearing seats are fitted at both ends of the shaft of the second wheel 244. The bearing seats are mounted on the bracket 234, allowing the second wheel 244 to be stably installed on the side of the frame 231. Additionally, a motor can be installed on the bracket 234 as needed, and the output shaft of the motor is connected to the shaft of the second wheel 244, so that the rotation of the annular belt 242 can be controlled via the second wheel 244.

[0052] like Figure 3 , Figure 7 As shown, in order to ensure the stable installation of the upright frame 231 without affecting the rotation of the screening frame 22, multiple square tubes 233 are fixedly installed on the outside of the upright frame 231, and multiple through holes 61 are provided on the base 63. Vertical rods 62 are installed through the through holes 61 by bolts or welding. The vertical rods 62 are installed through the square tubes 233 by bolts. Therefore, under the action of the vertical rods 62, the upright frame 231 can be stably placed relative to the screening frame 22.

[0053] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An apparatus for ore crushing and primary beneficiation, characterized in that, The system includes a crusher (1), with a base frame (11) below the crusher (1). A first screening assembly (2), a second screening assembly (3), and a third screening assembly (4) are arranged vertically on the side of the base frame (11). Each of the first screening assembly (2), second screening assembly (3), and third screening assembly (4) includes a central shaft (21), a screening frame (22), and an output mechanism (24). The central shaft (21) passes through the center of the screening frame (22), and the central shaft (21) drives the screening frame (22). The output mechanism (24) is located above the screening frame (22), with one end of the output mechanism (24) facing the center of the screening frame (22) and the other end of the output mechanism (24) protruding from the screening frame (22). The central shafts (21) of the first screening component (2), the second screening component (3), and the third screening component (4) are detachably connected end to end. The apertures of the multiple screening frames (22) decrease from top to bottom, and the discharge port at the bottom of the crusher (1) is located facing the edge of the first screening component (2).

2. The apparatus for ore crushing and primary beneficiation according to claim 1, characterized in that, A top cylinder (211) is fixedly installed on the top of the central shaft (21), a polygonal column (212) is fixedly installed at the center inside the top cylinder (211), and a polygonal groove (213) is provided on the bottom surface of the central shaft (21); the bottom of the central shaft (21) is connected to the adjacent top cylinder (211) by bolts, and the polygonal column (212) is inserted into the polygonal groove (213).

3. The apparatus for ore crushing and primary selection according to claim 2, characterized in that, A support frame (6) is provided on the side of the base frame (11). The support frame (6) includes a base (63) with a through hole in the middle. A motor (5) is provided above the base (63). The bottom of the central shaft (21) of the third screening component (4) is inserted into the through hole of the base (63) through a bearing connection, and the bottom of the central shaft (21) is connected to the power output shaft of the motor (5).

4. The apparatus for ore crushing and primary selection according to claim 2, characterized in that, The screening frame (22) includes a screening mesh (221), a frame (222) and a central frame (223). The central frame (223) is located in the middle of the inner side of the frame (222) and is fitted on the central axis (21). The screening mesh (221) is located in the area enclosed by the frame (222) and the central frame (223).

5. The apparatus for ore crushing and primary beneficiation according to claim 4, characterized in that, Multiple screws (225) are fixedly installed on the bottom edge of the central frame (223), and a sleeve (224) is installed below the central frame (223). The sleeve (224) is bolted to the central shaft (21), and an ear plate (226) is fixedly installed on the top of the sleeve (224). The screws (225) pass through the ear plate (226), and a nut is threaded on the bottom of the screws (225).

6. The apparatus for ore crushing and primary beneficiation according to claim 3, characterized in that, The output mechanism (24) includes a first wheel (241), a second wheel (244), and an annular belt (242). The diameter of the first wheel (241) is larger than the diameter of the second wheel (244), and the first wheel (241) is sleeved on the central shaft (21). Meanwhile, the second wheel (244) is set on the outside of the screening frame (22). The two ends of the annular belt (242) are respectively sleeved on the first wheel (241) and the second wheel (244), and multiple driving devices (243) are provided on the side wall.

7. The apparatus for ore crushing and primary beneficiation according to claim 6, characterized in that, The first wheel body (241) includes two half-wheel bodies (245) and two clamping arc plates (246). The two clamping arc plates (246) are respectively disposed on the inner side of the two half-wheel bodies (245), and the two clamping arc plates (246) are spliced ​​and sleeved on the central shaft (21).

8. The apparatus for ore crushing and primary beneficiation according to claim 7, characterized in that, A shielding shell (23) is provided on the upper edge of the screening frame (22). The shielding shell (23) includes a vertical frame (231) and a shell (232). Both the vertical frame (231) and the shell (232) are set as arcs with a central angle of less than 360°. The shell (232) is installed on the inner side of the vertical frame (231), and the bottom surfaces of the vertical frame (231) and the shell (232) are close to the top surface of the frame (222).

9. The apparatus for ore crushing and primary beneficiation according to claim 8, characterized in that, The annular belt (242) is set through the notch of the upright frame (231) and the shell (232), and the notches of the multiple sets of screening mesh frames (22) are oriented in different directions; a bracket (234) is fixedly set at the end of the upright frame (231), and bearing seats are sleeved on both ends of the shaft of the second wheel (244), and the bearing seats are installed on the bracket (234).

10. The apparatus for ore crushing and primary selection according to claim 8, characterized in that, Multiple square tubes (233) are fixedly installed on the outside of the upright frame (231), and multiple through holes (61) are provided on the base (63). A vertical rod (62) is installed through the through hole (61) and the vertical rod (62) is installed through the square tube (233).

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