Land improvement crusher

Abstract

The utility model discloses a land improvement crusher which comprises a rack, a walking mechanism, an excavator bucket mechanism and a screening mechanism, the walking mechanism is arranged below the rack and connected with the rack, the excavator bucket mechanism and the screening mechanism are arranged on the front side and the rear side of the rack respectively, a first conveying device is arranged between the screening mechanism and the excavator bucket mechanism, and a second conveying device is arranged between the screening mechanism and the excavator bucket mechanism. A second conveying device is arranged on one side of the lower portion of the screening mechanism. The first conveying device is arranged on the rack, one end of the first conveying device is located below the rear portion of the excavator bucket mechanism, and the other end of the first conveying device is located above the double-layer vibrating screen; the screening mechanism comprises a mounting frame in the shape of a cuboid frame, a double-layer vibrating screen is arranged in the mounting frame, and the double-layer vibrating screen is obliquely arranged. The land improvement crusher disclosed by the utility model has the advantage that farmland stones are screened and crushed in situ.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery and equipment technology, specifically relating to a land improvement crusher. Background Technology

[0002] Stones in farmland can significantly impact planting yields and cause considerable damage to planting, field management, and harvesting machinery. Large areas of land in western, northwestern, southwestern, and northern my country contain varying amounts of stones. Currently, there are surface-mounted stone-collecting machines on the market, but they cannot dig deep; they can only extract stones, and the extracted stones need to be taken away for crushing, increasing processing time and affecting overall efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a land improvement crusher to solve the problem in the prior art where the extracted stones need to be processed in a different location.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A land improvement crusher includes a frame, a traveling mechanism, a bucket mechanism, and a screening mechanism. The traveling mechanism is located below the frame and connected to it. The bucket mechanism and the screening mechanism are respectively located on the front and rear sides of the frame. A first conveying device is provided between the screening mechanism and the bucket mechanism. The lower part of the screening mechanism is the crushing mechanism, and a second conveying device is provided on one side of the crushing mechanism. The first conveying device is located on the frame. One end of the first conveying device is located between the two tracks below the rear of the bucket mechanism. The front end of the first conveyor belt is narrower at the bottom and wider at the top. Two steel wire ropes are connected to the boom on both sides. The other end of the first conveying device is located above a double-layer vibrating screen.

[0006] The screening mechanism includes a mounting frame in the shape of a cuboid, within which a double-layer vibrating screen is installed. The double-layer vibrating screen is inclined, and a crushing mechanism is installed at the lower end of the inclined direction of the double-layer vibrating screen. The input port of the crushing mechanism is located below the inclined lower end of the double-layer vibrating screen. A third conveyor belt is located below the discharge port of the second layer screen of the double-layer vibrating screen, extending downwards towards the top of the second conveyor belt and connecting to the vertical rod on the side of the crushing mechanism. One end of the second conveying device is located below the output port of the crushing mechanism and connected to the mounting frame. The other end of the second conveying device is inclined and connected to the top of the mounting frame by a connecting steel wire. A vibrating motor is connected to the double-layer vibrating screen. A guide plate is installed directly below the double-layer vibrating screen, and the guide plate is inclined and extends to the rear and upper part of the traveling mechanism.

[0007] The working process and principle of the above structure are as follows:

[0008] During operation, the traveling mechanism moves the frame into the field, and the hydraulic rods drive the lifting boom downwards. Two hydraulic motors at both ends of the bucket shaft and the connection point with the boom drive two planetary reducers to rotate the bucket backwards until it contacts the ground, rotating the soil and rocks into the hopper at the front of the first conveyor device. (The hopper at the front of the first conveyor belt is narrow at the bottom and wide at the top, effectively catching the soil and rocks. One meter behind the hopper, there is a pivot pin inside the conveyor belt. Two steel wire ropes on both sides of the hopper are connected to the boom directly above, allowing for deeper digging during operation and raising and lowering with the boom at the end.) The first conveyor device transports the soil and rocks to the screening mechanism for screening. The vibrating motor drives the double-layer vibrating screen to vibrate and oscillate, performing double screening of the soil and rocks, separating larger stones and pebbles, which then roll into the crushing mechanism. (The screen inside the crushing mechanism is adjustable, allowing it to output sand or gravel.) The double-layer vibrating screen (the first layer has a larger mesh than the second layer. When sand is discharged, stones from both layers enter the crushing mechanism. The side discharge port of the second layer only opens when stones are discharged from the crushing mechanism. This allows the stones from the second layer to directly enter the second conveyor belt and mix with the stones from the crushing mechanism for loading and removal, reducing wear on the crushing mechanism and improving the efficiency of land improvement) crushes larger stones and pebbles into sand or small stones, which are then placed on the second conveyor device and transported to the far end for direct loading for subsequent use. The remaining soil and some small stones fall onto the guide plate and finally roll down to the farmland behind the traveling mechanism, achieving the effect of land improvement. At the same time, the stones are crushed and screened for utilization, processing them into sized stones and sand, which can meet the local demand for sand and gravel while reducing the exploitation of local resources.

[0009] Furthermore, the bucket mechanism includes a bucket and a lifting boom. The bucket has a cylindrical structure, and the lifting boom is connected between the bucket and the frame. The two ends of the lifting boom are rotatably connected to the axis of the frame and the bucket, respectively. A hydraulic rod is provided on the side of the frame near the bucket. One end of the hydraulic rod is hinged to the frame, and the other end is hinged to the lower middle part of the lifting boom. Eight pairs of digging hooks are symmetrically arranged at both ends of the axis of the bucket. Four digging slots are formed at equal intervals along the circumference of the axis on the side of the bucket. The two ends of the digging slots extend to the digging hooks. Several digging teeth are evenly arranged on the lower side of each digging slot.

[0010] Furthermore, the two sides of the trench are inclined surfaces, the cross-section of the trench is triangular, and the bottom is an arc-shaped surface.

[0011] The two sloping surfaces facilitate the excavation of trenches to gather the excavated soil and rocks together.

[0012] Furthermore, each of the trench edges has ten digging teeth, including five short digging teeth and five long digging teeth, with the short and long digging teeth located on both sides of the trench's horizontal edge, and the digging teeth at corresponding positions on two adjacent trench edges having opposite lengths.

[0013] The digging teeth facilitate better selection of stones and reduce soil excavation. Furthermore, the arrangement of digging teeth of opposite lengths in adjacent digging trenches is more conducive to screening and selecting stones.

[0014] Furthermore, the first conveyor belt connects to the frame by tilting backward and upward between the two tracks below the bucket. The front end of the conveyor belt, which is narrow at the bottom and wide at the top, serves as a hopper and is also part of the first conveyor belt. There are two steel wire ropes on the upper sides of the hopper that connect to the boom directly above. One meter behind the hopper, there is a pivot pin inside the conveyor belt that allows it to be lowered with the boom during deep excavation and raised with the boom when the operation ends.

[0015] Furthermore, the top of the second conveying device, away from the mounting frame, is connected to a connecting frame. The top of the mounting frame is equipped with a winch, and a connecting steel wire is wound on the winch. The other end of the connecting steel wire is fixedly connected to the connecting frame, and the lower end of the second conveying device is rotatably connected to the mounting frame.

[0016] The lower end of the second conveyor is rotatably connected to the mounting frame. The second conveyor is folded by a winch and a connecting steel wire, which facilitates the folding of the second conveyor and prevents it from affecting the passage of the improved machine when it is moving.

[0017] The main engine with a hydraulic pump is located on the right side of the first conveyor belt, and the cab is located on the left side of the first conveyor belt. Behind the cab are a diesel generator, a diesel tank, and a hydraulic oil tank. The output end of the diesel tank is connected to the diesel generator and the main engine, respectively. The hydraulic oil tank is connected to a hydraulic pump, and the output end of the hydraulic pump is connected to a hydraulic distribution valve. The output end of the hydraulic distribution valve is connected to a hydraulic rod and a hydraulic motor.

[0018] The diesel tank provides diesel fuel to the main engine and diesel generator, while the hydraulic oil tank provides hydraulic oil to the hydraulic pump. The main engine drives the powerful hydraulic power to the travel motors of the tracks, the hydraulic motors of the bucket, the hydraulic rods of the boom, and the hydraulic motors on the three conveyor belts. The generator provides electrical power to the vibrating screen and crushing mechanism to ensure their working power.

[0019] Furthermore, the inner side of the trench is provided with several hanging teeth, one end of which is arc-shaped.

[0020] The hooks are set on the inner side of the trench and are mainly used to hook grass. Soil and pebbles fall into the trench at a normal angle, and the grass is hooked by these 12 hooks and falls outside the trench.

[0021] Furthermore, a discharge baffle is provided at the second vibrating screen outlet of the double-layer vibrating screen, and a third conveying device is provided on one side of the double-layer vibrating screen. One end of the discharge baffle is hinged to the side wall of the second vibrating screen, and the discharge baffle extends to the third conveying device, which is located below the output end of the discharge baffle.

[0022] By setting the discharge baffle, the direction of the discharge port of the second vibrating screen in the double-layer vibrating screen can be adjusted, so that the small stones after screening are output through the discharge baffle to the third conveyor device. The third conveyor device transports the material stones to the second conveyor belt and mixes them with the stones from the crushing mechanism, which are then loaded onto a truck and driven away.

[0023] Beneficial Effects: During operation, the traveling mechanism moves the frame into the field, while the hydraulic rod drives the lifting boom downwards. Two planetary reducers, driven by hydraulic motors at both ends of the bucket mechanism's central shaft and the boom connection, rotate the bucket to contact the ground, causing soil and rocks to rotate into the hopper at the front of the first conveyor belt. As the belt rotates, the soil and rocks are transported to the screening mechanism for screening. A vibrating motor drives a double-layer vibrating screen to vibrate and oscillate. After the soil and rocks fall onto the double-layer vibrating screen, they undergo double screening. The screened gravel and pebbles roll into the crushing mechanism, where they are broken into sand or small stones and discharged onto a second conveyor device for direct loading at a distant location for subsequent use. The good soil is vibrated onto the guide plate and finally rolls into the farmland behind the traveling mechanism, achieving soil improvement and the crushing and screening of stones. This method utilizes a land improvement crusher to process stones into sized gravel and sand. This not only meets the local demand for sand and gravel but also reduces the extraction of local resources. When the crusher needs to output sand, stones from the first and second screens enter the crusher. When the crusher needs to output gravel, the second screen, through the adjustment of the discharge baffle, directs the stones onto the third conveyor belt, which then transports them to the second conveyor belt to mix with the gravel from the crusher before loading and hauling them away. This reduces wear on the crusher, improves land improvement and crushing efficiency, and realizes the crushing and screening of stones for utilization. Processing stones into sized gravel and sand on the machine shortens the cost of stone transportation and sand production. It not only meets the local demand for sand and gravel but also reduces the extraction of local resources, allowing the soil to be returned to its original location and increasing soil fertility. This method has significant value in soil improvement. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a front view of the structure of the bucket in this utility model;

[0026] Figure 3This is a side view of the structure of the screening device in this utility model;

[0027] Figure 4 This is a partial structural diagram of the double-layer vibrating screen in this utility model.

[0028] Reference numerals: 1. Frame; 101. Cab; 102. Diesel generator; 103. Diesel tank; 104. Hydraulic oil tank; 105. Hydraulic pump; 106. Hydraulic distribution valve; 2. Traveling mechanism; 3. Bucket; 301. Hydraulic rod; 302. Hook; 303. Trench; 304. Gear; 311. Internal gear ring; 4. Screening mechanism; 401. Mounting frame; 402. Double-layer vibrating screen; 403. Discharge baffle; 404. Connecting frame; 405. Connecting wire; 406. Winch; 407. Guide plate; 5. First conveying device; 6. Second conveying device; 7. Lifting boom; 8. Hook; 9. Third conveying device; 10. Crushing mechanism; 11. Folding section. Detailed Implementation

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0030] Example:

[0031] like Figures 1-4 As shown, this embodiment provides a land improvement crusher, including a frame 1, a walking mechanism 2, a bucket mechanism 3, and a screening mechanism 4. The walking mechanism 2 is a tracked walking mechanism, driven by a main engine. The walking mechanism 2 is located below the frame 1 and connected to the frame 1. The bucket mechanism 3 and the screening mechanism 4 are respectively located on the front and rear sides of the frame 1. A first conveying device 5 is provided between the screening mechanism 4 and the bucket mechanism 3. A second conveying device 6 is provided on one side of the lower part of the screening mechanism 4. The first conveying device 5 is located on the frame 1, with one end of the first conveying device 5 located below and behind the bucket mechanism 3, and the other end of the first conveying device 5 located above the double-layer vibrating screen 402.

[0032] The screening mechanism 4 includes a rectangular frame mounting bracket 401. A double-layer vibrating screen 402 is installed inside the mounting bracket 401. The double-layer vibrating screen 402 is inclined, and a crushing mechanism 10 is located at the lower end of the inclined direction of the double-layer vibrating screen 402. The input port of the crushing mechanism 10 is located below the middle of the inclined lower end of the double-layer vibrating screen 402. One end of the second conveying device 6 is located below the output port of the crushing mechanism 10 and connected to the mounting bracket 401. The other end of the second conveying device 6 is inclined and connected to the top of the mounting bracket 401 by a connecting wire 405. A vibrating motor is connected to the double-layer vibrating screen 402. A guide plate 407 is located directly below the double-layer vibrating screen 403, and the guide plate 407 is inclined and extends to the rear and above the traveling mechanism 2. The end of the first conveying device 5 is provided with a folding part 11, which can easily change the feed direction.

[0033] The working process and principle of the above structure are as follows:

[0034] During operation, the traveling mechanism 2 drives the frame 1 to the field, the hydraulic rod 301 drives the lifting boom 7 to move downwards, the bucket 3 mechanism contacts the ground, and drives the soil and rocks to rotate onto the first conveying device 5. The first conveying device 5 transports the soil and rocks to the screening mechanism 4 for screening. The vibrating motor drives the double-layer vibrating screen 402 to vibrate and swing. After the soil and rocks fall onto the double-layer vibrating screen 402, they undergo double screening, separating out larger stones and pebbles, which then roll down to the crushing mechanism. Within 10, the crushing mechanism 10 operates, crushing larger stones and pebbles into sand or small stones, which are then discharged onto the second conveyor device 6 and transported to the far end for direct loading onto trucks for subsequent use. The remaining soil and some small stones fall onto the guide plate 407 and finally roll down into the farmland behind the walking mechanism 2, realizing the crushing and screening of the stones for land improvement. The stones are processed into sized stones and sand, which can not only meet the local demand for sand and gravel, but also reduce the exploitation of local resources.

[0035] In another embodiment of this utility model, such as Figure 1 and Figure 2 As shown, the bucket mechanism includes a bucket 3 and a lifting boom 7. The bucket 3 has a cylindrical structure. The lifting boom 7 is connected between the bucket 3 and the frame 1. The two ends of the lifting boom 7 are rotatably connected to the axis of the frame 1 and the bucket 3, respectively. A hydraulic rod 301 is provided on the side of the frame 1 near the bucket 3. One end of the hydraulic rod 301 is hinged to the frame 1, and the other end is hinged to the lower middle part of the lifting boom 7. Eight pairs of digging hooks 302 are symmetrically arranged at both ends of the axis of the bucket 3. Four digging slots 303 are formed at equal intervals along the circumference of the axis on the side of the bucket 3. The two ends of the digging slots 303 extend to the digging hooks 302. Several digging teeth 304 are evenly arranged on the lower side of each digging slot 303.

[0036] The bucket 3 rotates with the inner gear ring 311, the digging hook 302 on the bucket 3 disturbs and breaks up the soil, and the digging teeth 304 cooperate with the digging groove 303 to collect the soil and stones in the digging groove 303, so that the excavated soil and gravel are poured from right front to back onto the first conveying device 5.

[0037] In another embodiment of this utility model, such as Figure 1 and Figure 2 As shown, the two sides of the groove 303 are inclined surfaces, the cross-section of the groove 303 is triangular, and the bottom is an arc-shaped surface.

[0038] The two inclined surfaces facilitate the collection of excavated soil and rocks by the trench 303.

[0039] In another embodiment of this utility model, such as Figure 1 and Figure 2 As shown, there are ten digging teeth 304 on each side of the trench 303, including five short digging teeth 304 and five long digging teeth 304. The short digging teeth 304 and the long digging teeth 304 are located on both sides of the horizontal side of the trench 303, and the digging teeth 304 at corresponding positions on the sides of two adjacent trenches 303 are of opposite lengths.

[0040] The teeth 304 facilitate better selection of stones and reduce soil excavation. The opposite lengths of the teeth 304 on adjacent digging trenches 303 further facilitate the screening and selection of stones.

[0041] In another embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the top of the second conveying device 6, which is away from the mounting frame 401, is connected to a connecting frame 404. A winch 406 is provided on the top of the mounting frame 401. A connecting steel wire 405 is wound on the winch 406. The other end of the connecting steel wire 405 is fixedly connected to the connecting frame 404. The lower end of the second conveying device 6 is rotatably connected to the mounting frame 401.

[0042] The lower end of the second conveying device 6 is hinged to the mounting frame 401. The second conveying device 6 is rotated by the winch 406 and the connecting steel wire 405, which facilitates the folding of the second conveying device 6 and prevents it from affecting the passage of the improved machine when it is moving.

[0043] The first conveyor device 5, the second conveyor device 6, and the third conveyor device 9 are all sand and gravel conveyor belts. This structure is conventional existing technology, and we will not go into too much detail about the structure. They are driven by motors and are installed on the frame 1 and mounting frame 401 at their respective positions through their own frames.

[0044] In another embodiment of this utility model, such as Figures 1-3As shown, a cab 101 is mounted on the frame 1. A diesel generator 102, a diesel tank 103, and a hydraulic oil tank 104 are mounted behind the cab 101. The main engine is mounted below the cab 101. The output end of the diesel tank 103 is connected to the diesel generator 102 and the main engine, respectively. The hydraulic oil tank 104 is connected to a hydraulic pump 105. The output end of the hydraulic pump 105 is connected to a hydraulic distribution valve 106. The hydraulic rod 301 at the output end of the hydraulic distribution valve 106 is connected.

[0045] The diesel tank 103 provides diesel fuel to the main engine and diesel generator 102, and the hydraulic oil tank 104 provides hydraulic oil to the hydraulic rod 301 through the hydraulic pump 105 and the hydraulic distribution valve 106 to ensure its working power.

[0046] In another embodiment of this utility model, such as Figures 1-3 As shown, several hanging teeth 8 are provided on the inner side of the groove 303, and one end of the hanging teeth 8 is arc-shaped.

[0047] The hanging teeth 8 are set on the inner side of the trench 303 and are mainly used to hang grass. Soil and pebbles fall into the trench 303 at a normal angle, and the grass is caught by these 12 hanging teeth 8 and falls outside the trench 303.

[0048] In another embodiment of this utility model, such as Figures 1-4 As shown, a discharge baffle 403 is provided at the second vibrating screen outlet of the double-layer vibrating screen 402. A third conveying device 9 is provided on one side of the double-layer vibrating screen 402. One end of the discharge baffle 403 is hinged to the side wall of the second vibrating screen. The discharge baffle 403 extends to the third conveying device 9, which is located below the output end of the discharge baffle 403.

[0049] By setting the discharge baffle 403, the direction of the discharge port of the second vibrating screen in the double-layer vibrating screen 402 can be adjusted, so that the small stones after screening are output to the third conveying device 9 through the discharge baffle 403. The third conveying device 9 transports the material stones to other hoppers. When the discharge baffle 403 is not needed to work, the discharge baffle 403 swings to one side, which does not affect the normal discharge of the double-layer vibrating screen 402 to the crushing mechanism 10.

[0050] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A land improvement crusher, characterized in that, The system includes a frame, a traveling mechanism, a bucket mechanism, a screening mechanism, and a crushing mechanism. The traveling mechanism is located below the frame and connected to it. The bucket mechanism and the screening mechanism are located on the front and rear sides of the frame, respectively. A first conveying device is provided between the screening mechanism and the bucket mechanism. The crushing mechanism is located below the screening mechanism. A third conveyor belt is inclined below the discharge port on the side of the second layer screen of the screening mechanism. The other end of the third conveyor belt is above the second conveyor belt and is connected to a vertical rod on the side of the crushing mechanism. A second conveying device is provided on one side of the crushing mechanism. The first conveying device is located on the frame. One end of the first conveying device is located between the two tracks below and behind the bucket mechanism, and the other end of the first conveying device is located above the double-layer vibrating screen. The screening mechanism includes a mounting frame in the shape of a cuboid, within which a double-layer vibrating screen is installed. The double-layer vibrating screen is inclined, and a crushing mechanism is installed at the lower end of the inclined direction of the double-layer vibrating screen. The input port of the crushing mechanism is located below the inclined lower end of the double-layer vibrating screen. A third conveyor belt is located below the discharge port on the side of the second layer of the double-layer vibrating screen and is connected to a vertical rod on the side of the crushing mechanism. One end of the second conveying device is located below the output port of the crushing mechanism and is connected to the mounting frame. The other end of the second conveying device is inclined and connected to the top of the mounting frame by a connecting steel wire. A vibrating motor is connected to the double-layer vibrating screen. A guide plate is installed directly below the double-layer vibrating screen, and the guide plate is inclined and extends to the rear and above the traveling mechanism.

2. The land improvement crusher according to claim 1, characterized in that, The bucket mechanism includes a bucket and a lifting boom. The bucket has a cylindrical structure. The lifting boom connects the bucket to the frame. Both ends of the lifting boom are rotatably connected to the axis of the frame and the bucket, respectively. A hydraulic rod is installed on the frame near the bucket. One end of the hydraulic rod is hinged to the frame, and the other end is hinged to the lower middle part of the lifting boom. Two steel wire ropes are installed under the two booms to suspend the upper sides of the front end of the first conveyor belt hopper. Eight pairs of digging hooks are symmetrically arranged at both ends of the bucket's axis. Four digging slots are evenly spaced along the circumference of the bucket's side axis. The two ends of the digging slots extend to the digging hooks. Several digging teeth are evenly spaced on the lower side of each digging slot.

3. The land improvement crusher according to claim 2, characterized in that, The two sides of the trench are inclined surfaces, and the cross-section of the trench is triangular with an arc-shaped bottom.

4. The land improvement crusher according to claim 3, characterized in that, There are ten digging teeth on each of the digging edges, including five short digging teeth and five long digging teeth. The short and long digging teeth are located on both sides of the digging edge, and the digging teeth at corresponding positions on two adjacent digging edges are of opposite lengths.

5. The land improvement crusher according to claim 4, characterized in that, The second conveying device has a connecting frame connected to the top of the end away from the mounting frame. The top of the mounting frame is equipped with a winch with a connecting steel wire wound on it. The other end of the connecting steel wire is fixedly connected to the connecting frame. The lower end of the second conveying device is rotatably connected to the mounting frame.

6. The land improvement crusher according to claim 2, characterized in that, A driver's cab is located on the left side of the first conveyor belt. A diesel generator, a diesel tank, and a hydraulic oil tank are located behind the driver's cab. A main engine with a hydraulic pump is located on the right side of the first conveyor belt. The output end of the diesel tank is connected to the diesel generator and the main engine. The hydraulic oil tank is connected to the hydraulic pump. The output end of the hydraulic pump is connected to a hydraulic distribution valve. The output end of the hydraulic distribution valve is connected to a hydraulic rod and a hydraulic motor.

7. The land improvement crusher according to claim 2, characterized in that, The inner side of the trench is provided with several hanging teeth, one end of which is arc-shaped.

8. The land improvement crusher according to claim 1, characterized in that, A discharge baffle is provided at the outlet of the second layer of the double-layer vibrating screen. A third conveying device is provided on one side of the double-layer vibrating screen. One end of the discharge baffle is hinged to the side wall of the second vibrating screen. The discharge baffle extends to the third conveying device, which is located below the output end of the discharge baffle.

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