Tooth roller type sand making machine
By setting up a screening mechanism and lifting mechanism in the tooth roller sand making machine, the problem of uneven gravel particles is solved, more uniform gravel discharge is achieved and the need for additional treatment is reduced.
Patent Information
- Application Number
- CN202411708890.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-02-21
AI Technical Summary
The gravel produced by the existing tooth roller sand making machine is doped with larger particles in fine sand, resulting in uneven particle size and additional screening treatment is required.
A tooth roller sand making machine is designed, including a screening mechanism and a lifting mechanism. The screening mechanism is arranged between the active crushing roller and the driven crushing roller to screen the gravel through the screen plate; the lifting mechanism re-submits the gravel that has not passed the screening into the sand making box for re-crumbing.
Through screening and re-crumbing treatment, the particle size uniformity of the sand making machine discharge gravel is improved, the additional screening workload is reduced, and the uniformity of the gravel is ensured.
Smart Images
Figure CN119488970A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of sand making machines, in particular to a toothed roller type sand making machine. Background Art
[0002] A toothed roller sand making machine is a device specially used to process various stones, ores and other materials into construction sand or artificial sand. It is similar to a toothed roller crusher, but is more focused on sand making technology. A toothed roller sand making machine mainly uses two sets of relatively rotating toothed rollers to extrude and shear the materials, thereby crushing large pieces of stone into sand particles that meet construction requirements. Since the angles and directions of force on the materials between different toothed rollers are different, the crushing effects produced will vary. Some particles may be crushed into finer particles in high stress areas, while other particles may only be slightly sheared, retaining a larger particle size. This also leads to the situation that some of the current toothed roller sand making machines produce gravel with larger particles of gravel mixed in fine sand. In actual use, the gravel produced by the sand making machine needs to be further screened to make the gravel particle size uniform, which increases the workload of workers.
[0003] Based on this, a toothed roller sand making machine is now provided, which can eliminate the disadvantages of the existing devices. Summary of the invention
[0004] The object of the present invention is to provide a toothed roller sand making machine to solve the problems in the background technology.
[0005] To achieve the above object, the present invention provides the following technical solutions:
[0006] A toothed roller sand making machine comprises a sand making box, a feeding port is provided on the top of the sand making box, a finished sand discharging port is provided on the bottom of the sand making box, an active crushing roller is rotatably arranged in the sand making box, the front end of the active crushing roller penetrates through the front side of the sand making box and is connected with a main driving mechanism, a driven crushing roller parallel to the active crushing roller is provided on the right side of the active crushing roller, the driven crushing roller is connected to the sand making box through a shifting mechanism, the active crushing roller and the driven crushing roller are connected through a main transmission mechanism, a screening mechanism is provided between the active crushing roller and the finished sand discharging port in the sand making box for screening the gravel crushed by the active crushing roller and the driven crushing roller, and a lifting mechanism is provided on the front side of the sand making box for re-putting the gravel that has not passed through the screening structure into the sand making box from the feeding port.
[0007] On the basis of the above technical solution, the present invention also provides the following optional technical solution:
[0008] In an optional solution: the main driving mechanism includes a driving motor whose power output end is connected to the front end of the active crushing roller, and the driving motor is fixed on a motor fixing platform, and the motor fixing platform is horizontally arranged on the front side of the sand making box.
[0009] In an optional scheme: the front and rear ends of the driven crushing roller pass through the sand making box, and the sand making box is provided with a shift groove at the point where the driven crushing roller passes through, and the shift mechanism includes a bearing seat that is coaxially and rotatably arranged on the front and rear sides of the driven crushing roller, and the bearing seat is located on the outside of the sand making box, and the positions of the front side and the rear side of the sand making box corresponding to the bearing seat are provided with a load-bearing platform, and the bearing seat is slidably connected to the load-bearing platform, and a pair of fixed plates are vertically provided at the left and right ends of the load-bearing platform, and a screw rod is rotatably passed through the two fixed plates, and the screw rod is threadedly connected to the lower part of the fixed plate, and the fixed plate is coaxially connected with a turbine on the right side of the sand making box, and two parallel extension plates are vertically provided at the position corresponding to the turbine on the right side of the sand making box, and a worm is rotatably passed through the two extension plates, and the worm is meshed with the turbine, and a turntable is connected to the front end of the worm.
[0010] In an optional scheme: the main transmission mechanism includes a first connecting plate at one end coaxially penetrating and rotatably arranged on the rear side of the active crushing roller, the other end of the first connecting plate is rotatably connected to one end of the second connecting plate, the other end of the second connecting plate is coaxially penetrating and rotatably arranged on the rear side of the driven crushing roller, the first connecting plate and the second connecting plate are both located behind the sand making box, the active crushing roller is coaxially connected with a driving gear behind the first connecting plate, the first connecting plate and the second connecting plate are coaxially connected with a driven gear at the rotational connection point, the driven gear is meshed with the driving gear, a driving sprocket is coaxially connected on the rear side surface of the driven gear, and a driven sprocket is coaxially connected on the driven crushing roller behind the second connecting plate, the driven sprocket and the driving sprocket are on the same plane, and a chain is provided between the driving sprocket and the driven sprocket.
[0011] In an optional scheme: the screening structure includes a screen plate arranged directly below the gap between the active crushing roller and the driven crushing roller, the lower surface of the screen plate is connected to one end of a spring, there are four springs and they are distributed at the four corners of the screen plate, the other end of the spring is connected to a fixed foot, the fixed foot is fixed on the inner wall of the sand making box, and a vibration component for driving the screen plate to vibrate is provided on the rear side wall of the sand making box.
[0012] In an optional solution: the vibration assembly includes a rotating shaft that rotates and penetrates the rear side wall of the sand making box, the rotating shaft is connected to a cam on the inner side of the sand making box, the cam is located below the rear end of the screen plate, and the rotating shaft is connected to a driving unit on the outer side of the sand making box.
[0013] In an optional solution: the driving unit includes a driven pulley coaxially connected to the rotating shaft, a driving pulley is coaxially connected to the rear side of the driving gear, and a belt is provided between the driven pulley and the driving pulley.
[0014] In an optional solution: the specifications of the driving gear and the driven gear are the same, and the number of teeth of the driving sprocket is smaller than the number of teeth of the driven sprocket.
[0015] In an optional scheme: the lifting mechanism includes a discharge window opened at a position corresponding to the screen plate on the front side of the sand making box, a guide plate is rotatably provided at the front end of the screen plate, the guide plate is placed on the lower end of the discharge window, a receiving hopper is provided on the front side of the sand making box below the discharge window, the bottom of the receiving hopper is connected with the bottom of the lifting cylinder, the lifting cylinder is vertically fixed on the left side of the sand making box, a lifting auger is rotatably provided in the lifting cylinder, a lifting motor is provided on the top of the lifting cylinder, the power output end of the lifting motor is connected to the top of the lifting auger, a lifting discharge trough is provided near the upper end of the lifting cylinder, the outlet of the lifting discharge trough is located directly above the feed port, and the sieve plate is obliquely arranged in the sand making box with the rear end higher than the front end.
[0016] Compared with the prior art, the present invention has the following beneficial effects:
[0017] 1. The present invention sets a screening mechanism and a lifting mechanism. The gravel that passes through the screening mechanism is finished sand, and the gravel that does not pass through the screening mechanism enters the sand making box again through the lifting mechanism to be crushed, so that the size of the gravel particles produced by the sand making machine is more uniform, eliminating additional processing work.
[0018] 2. The present invention controls the synchronous rotation of two screws by a worm, so that the driven crushing roller always remains parallel to each other when it approaches or moves away from the active crushing roller, that is, the gap between the active crushing roller and the driven crushing roller is uniform, thereby improving the uniformity of the particle size of the sand-making raw materials after being crushed by the active crushing roller and the driven crushing roller.
[0019] 3. In the present invention, the specifications of the driving gear and the driven gear are the same, and the number of teeth of the driving sprocket is smaller than that of the driven sprocket, so that there is a speed difference between the driving crushing roller and the driven crushing roller, which helps to prevent the sand making raw materials from being accumulated between the teeth on the driving crushing roller and the driven crushing roller after being crushed. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the structure of the right front viewing angle of the present invention.
[0021] Figure 2 It is a partial cross-sectional schematic diagram of the present invention from the left rear viewing angle.
[0022] Figure 3 It is a schematic diagram of the structure of the first connecting plate and the second connecting plate in the present invention.
[0023] Figure 4 It is a schematic diagram of the right side cross-section mechanism of the present invention.
[0024] Figure 5For the present invention Figure 4 A partial enlarged view of middle A.
[0025] Notes on reference numerals: 101, sand making box; 102, feed port; 103, finished sand discharge port; 104, active crushing roller; 105, driven crushing roller; 201, bearing seat; 202, load-bearing platform; 203, fixed plate; 204, screw rod; 205, extension plate; 206, worm; 207, turbine; 208, turntable; 209, shifting groove; 301, driving motor; 302, motor fixing platform; 303, first connecting plate; 304, second connecting plate; 305, bearing seat; 206, load-bearing platform; 205, fixed plate; 206, worm; 207, turbine; 208, turntable; 209, shifting groove; 301, driving motor; 302, motor fixing platform; 303, first connecting plate; 304, second connecting plate; 305, bearing seat; 206, load-bearing platform; 204, screw rod; 205, extension plate; 206, worm; 207, turbine; 208, turntable; 209, shifting groove; 301, driving motor; 302, motor fixing platform; 303, first connecting plate; 304, second connecting plate; 305, bearing seat; 205, load-bearing platform; 204, second connecting plate; 305, bearing seat; 204, load-bearing platform; 204, second connecting plate; 305, bearing seat; 204, load-bearing platform; 204, second connecting plate; 204, second connecting plate; 204, second connecting plate; 204, second connecting plate; 204, second connecting plate; 204, second connecting plate; 204, second connecting plate; 204, 5. Driving gear; 306. Driven gear; 307. Driving sprocket; 308. Driven sprocket; 309. Chain; 401. Screen plate; 402. Spring; 403. Fixed foot; 404. Rotating shaft; 405. Cam; 406. Driven pulley; 407. Driving pulley; 408. Belt; 501. Guide plate; 502. Discharge window; 503. Collecting hopper; 504. Lifting cylinder; 505. Lifting auger; 506. Lifting motor; 507. Lifting discharge chute. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.
[0027] In one embodiment, Figure 1-Figure 5 As shown, a toothed roller sand making machine comprises a sand making box 101, a feeding port 102 is arranged on the top of the sand making box 101, a finished sand discharging port 103 is arranged on the bottom of the sand making box 101, an active crushing roller 104 is arranged to rotate in the sand making box 101, the front end of the active crushing roller 104 passes through the front side of the sand making box 101 and is connected to the main driving mechanism, a driven crushing roller 105 parallel to the active crushing roller 104 is arranged on the right side of the active crushing roller 104, and the driven crushing roller 105 is arranged by a shifting mechanism The structure is connected to the sand making box 101, the active crushing roller 104 and the driven crushing roller 105 are connected by a main transmission mechanism, and a screening mechanism is provided between the active crushing roller 104 and the finished sand discharge port 103 in the sand making box 101 for screening the sand and gravel crushed by the active crushing roller 104 and the driven crushing roller 105. A lifting mechanism is provided on the front side of the sand making box 101 for re-feeding the sand and gravel that has not passed through the screening structure into the sand making box 101 from the feed port 102.
[0028] In this embodiment, the sand making raw materials can be put into the sand making box 101 from the feed port 102, or directly put into the feed end of the lifting mechanism. The lifting mechanism is used to put the sand making raw materials into the sand making box 101 from the feed port 102, thereby reducing the feeding height. The main driving mechanism drives the active crushing roller 104 to rotate, and the active crushing roller 104 drives the driven crushing roller 105 to rotate through the main transmission mechanism to break the sand making raw materials. The distance between the active crushing roller 104 and the driven crushing roller 105 is adjusted by the shifting mechanism to adjust the particle size of the sand making discharge. The gravel obtained by crushing the sand making raw materials is screened by the screening mechanism, and the gravel passing through the screening mechanism is discharged from the sand making box 101 from the finished sand discharge port 103. The gravel that has not passed the screening by the screening mechanism is re-crushed by the active crushing roller 104 and the driven crushing roller 105 through the lifting mechanism, thereby improving the uniformity of the discharge particles of the sand making machine, and the discharge can be used directly.
[0029] In one embodiment, Figure 1 and Figure 3 As shown, the main driving mechanism includes a driving motor 301 whose power output end is connected to the front end of the active crushing roller 104. The driving motor 301 is fixed on a motor fixing platform 302. The motor fixing platform 302 is horizontally arranged on the front side of the sand making box 101. The driving motor 301 is used to drive the active crushing roller 104 to rotate.
[0030] In one embodiment, Figure 1 , Figure 3 and Figure 4As shown, the front and rear ends of the driven crushing roller 105 pass through the sand making box 101, and a shifting groove 209 is provided on the sand making box 101 at the place where the driven crushing roller 105 passes through. The shifting mechanism includes a bearing seat 201 which is coaxially penetrated and rotatably arranged on the front and rear sides of the driven crushing roller 105, and the bearing seat 201 is located on the outside of the sand making box 101. The positions corresponding to the bearing seats 201 on the front side surface of the sand making box 101 and the rear side surface of the sand making box 101 are both provided with a load-bearing platform 202, and the bearing seat 201 is slidably connected to the load-bearing platform 202. A pair of fixed plates 203 are vertically provided at the left and right ends of the load-bearing platform 202, and a screw rod 204 is rotatably provided between the two fixed plates 203, and the screw rod 204 is threadedly connected to the lower part of the fixed plate 203, and the fixed plate 203 is coaxially connected with a turbine 207 on the right side of the sand making box 101, and two mutually parallel extension plates 205 are vertically provided at the positions corresponding to the turbine 207 on the right side surface of the sand making box 101. A worm 206 is provided between the two extension plates 205 for rotation, and the worm 206 is meshed with a turbine 207. A turntable 208 is connected to the front end of the worm 206. The worm 206 is rotated by the turntable 208 to drive the two turbines 207 to rotate in the same direction. The turbine 207 drives the screw 204 to rotate. The rotation of the screw 204 causes the bearing seat 201 to slide on the load-bearing platform 202, driving the driven crushing roller 105 away from or close to the active crushing roller 104, adjusting the gap between the active crushing roller 104 and the driven crushing roller 105. Since the two screws 204 are controlled to rotate synchronously by a worm 206, the driven crushing roller 105 always keeps a parallel state with each other when it approaches or moves away from the active crushing roller 104, that is, the gap between the active crushing roller 104 and the driven crushing roller 105 is uniform, thereby improving the uniformity of the particle size of the sand-making raw materials after being crushed by the active crushing roller 104 and the driven crushing roller 105.
[0031] In one embodiment, Figure 2 and Figure 3As shown, the main transmission mechanism includes a first connecting plate 303 with one end coaxially penetrating and rotatably arranged on the rear side of the active crushing roller 104, the other end of the first connecting plate 303 is rotatably connected to one end of the second connecting plate 304, the other end of the second connecting plate 304 is coaxially penetrating and rotatably arranged on the rear side of the driven crushing roller 105, the first connecting plate 303 and the second connecting plate 304 are both located behind the sand making box 101, and the active crushing roller 104 is coaxially connected with a driving gear 305 behind the first connecting plate 303. The second connecting plate 304 is coaxially connected to a driven gear 306 at the rotation connection, and the driven gear 306 is meshed with the driving gear 305. A driving sprocket 307 is coaxially connected to the rear side of the driven gear 306. A driven sprocket 308 is coaxially connected to the driven crushing roller 105 behind the second connecting plate 304. The driven sprocket 308 and the driving sprocket 307 are on the same plane. A chain 309 is provided between the driving sprocket 307 and the driven sprocket 308. When the active crushing roller 104 rotates, the active crushing roller 104 drives the driving sprocket 307 to rotate. The driven gear 305 rotates together, the driving gear 305 drives the driven gear 306 to rotate in the opposite direction, the driven gear 306 drives the driving sprocket 307 to rotate in the same direction, the driving sprocket 307 drives the driven sprocket 308 to rotate in the same direction through the chain 309, and the driven sprocket 308 drives the driven crushing roller 105 to rotate, that is, the driving crushing roller 104 and the driven crushing roller 105 rotate in opposite directions, and the sand making raw materials are brought into the gap between the driving crushing roller 104 and the driven crushing roller 105 for crushing. When the gap between the active crushing roller 104 and the driven crushing roller 105 is increased, the first connecting plate 303 and the second connecting plate 304 rotate to adapt to the changed spacing between the active crushing roller 104 and the driven crushing roller 105. In this process, since the length of the first connecting plate 303 remains unchanged, the spacing between the rotation axis of the active gear 305 and the rotation axis of the driven gear 306 remains unchanged, that is, the active gear 305 and the driven gear 306 remain in meshing, and similarly, the active sprocket 307 and the driven sprocket 308 also rotate synchronously through the chain 309.
[0032] In one embodiment, Figure 4 and Figure 5 As shown, the screening structure includes a screen plate 401 arranged directly below the gap between the active crushing roller 104 and the driven crushing roller 105. The lower surface of the screen plate 401 is connected to one end of a spring 402. There are four springs 402 and they are distributed at the four corners of the screen plate 401. The other end of the spring 402 is connected to a fixed foot 403. The fixed foot 403 is fixed on the inner wall of the sand making box 101. A vibration component for driving the screen plate 401 to vibrate is provided on the rear side wall of the sand making box 101. The vibration component intermittently applies a force to the rear end of the screen plate 401 to vibrate it, thereby accelerating the screening speed of the screen plate 401 for sand and gravel.
[0033] In one embodiment, Figure 4As shown, the vibration assembly includes a rotating shaft 404 that rotates and passes through the rear side wall of the sand making box 101. The rotating shaft 404 is connected to a cam 405 on the inner side of the sand making box 101. The cam 405 is located below the rear end of the sieve plate 401. The rotating shaft 404 is connected to a driving unit on the outer side of the sand making box 101. The driving unit drives the rotating shaft 404 to rotate, and the rotating shaft 404 drives the cam 405 to rotate. The cam 405 intermittently applies a force to the sieve plate 401 to cause the sieve plate 401 to vibrate.
[0034] In one embodiment, Figure 2 and Figure 4 As shown, the driving unit includes a driven pulley 406 coaxially connected to the rotating shaft 404, a driving pulley 407 is coaxially connected to the rear side of the driving gear 305, a belt 408 is provided between the driven pulley 406 and the driving pulley 407, and when the driving gear 305 rotates, the driving pulley 407 rotates synchronously with the driving gear 305, the driving pulley 407 drives the driven pulley 406 to rotate through the belt 408, and the driven pulley 406 drives the rotating shaft 404 to rotate.
[0035] In one embodiment, Figure 2 As shown, the specifications of the driving gear 305 and the driven gear 306 are the same, and the number of teeth of the driving sprocket 307 is less than the number of teeth of the driven sprocket 308, so that there is a speed difference between the active crushing roller 104 and the driven crushing roller 105, which helps to prevent the sand-making raw materials from being accumulated between the teeth on the active crushing roller 104 and the driven crushing roller 105 after being crushed.
[0036] In one embodiment, Figure 1 , Figure 2 and Figure 5As shown, the lifting mechanism includes a discharge window 502 opened at a position corresponding to the sieve plate 401 on the front side of the sand making box 101, a guide plate 501 is rotatably provided at the front end of the sieve plate 401, and the guide plate 501 is placed on the lower end of the discharge window 502. A receiving hopper 503 is provided below the discharge window 502 on the front side of the sand making box 101, and the bottom of the receiving hopper 503 is connected to the bottom of the lifting cylinder 504. The lifting cylinder 504 is vertically fixed on the left side of the sand making box 101, and a lifting auger 505 is rotatably provided in the lifting cylinder 504. A lifting motor 506 is provided on the top of the lifting cylinder 504, and the power output of the lifting motor 506 is The outlet end is connected to the top of the lifting auger 505, and a lifting discharge trough 507 is provided near the upper end of the lifting cylinder 504. The outlet of the lifting discharge trough 507 is located directly above the feed port 102. The sieve plate 401 is tilted in the sand making box 101 and the rear end is higher than the front end. The sand and gravel that does not pass through the sieve plate 401 enters the receiving hopper 503 from the guide plate 501, and then enters the lifting cylinder 504 from the bottom of the receiving hopper 503. After being lifted by the lifting auger 505, it is discharged from the lifting discharge trough 507 to the top of the feed port 102, and finally falls into the sand making box 101 from the feed port 102.
[0037] The above embodiment discloses a toothed roller sand making machine, wherein the driving motor 301 drives the active crushing roller 104 to rotate. When the active crushing roller 104 rotates, the active crushing roller 104 drives the active gear 305 to rotate together, and the active gear 305 drives the driven gear 306 to rotate in the opposite direction, and the driven gear 306 drives the active sprocket 307 to rotate in the same direction, and the active sprocket 307 drives the driven sprocket 308 to rotate in the same direction through the chain 309, and the driven sprocket 308 drives the driven crushing roller 105 to rotate, that is, the active crushing roller 104 and the driven crushing roller 105 rotate in opposite directions, and the sand making raw materials are brought into the gap between the active crushing roller 104 and the driven crushing roller 105 for crushing, and the worm 206 is rotated by the turntable 208 to drive The two turbines 207 rotate in the same direction, and the turbines 207 drive the screw rod 204 to rotate. The rotation of the screw rod 204 causes the bearing seat 201 to slide on the load-bearing platform 202, and drives the driven crushing roller 105 to move away from or approach the active crushing roller 104, so as to adjust the gap between the active crushing roller 104 and the driven crushing roller 105. Moreover, since the two screw rods 204 are controlled by a worm 206 to rotate synchronously, the driven crushing roller 105 always keeps a parallel state with each other when it moves away from or approaching the active crushing roller 104, that is, the gap between the active crushing roller 104 and the driven crushing roller 105 is uniform, which improves the uniformity of the particle size of the sand making raw material after being crushed by the active crushing roller 104 and the driven crushing roller 105. 04 and the driven crushing roller 105, the first connecting plate 303 and the second connecting plate 304 rotate to adapt to the changing distance between the active crushing roller 104 and the driven crushing roller 105. In this process, since the length of the first connecting plate 303 remains unchanged, the distance between the rotation axis of the active gear 305 and the rotation axis of the driven gear 306 remains unchanged, that is, the active gear 305 and the driven gear 306 remain meshed. Similarly, the active sprocket 307 and the driven sprocket 308 also rotate synchronously through the chain 309. The sand and gravel obtained by the crushing of the sand-making raw materials fall on the screen plate 401. When the active gear 305 rotates, it drives the active pulley 407 to rotate synchronously. The active pulley 407 rotates synchronously through the belt 409. 08 drives the driven pulley 406 to rotate, the driven pulley 406 drives the rotating shaft 404 to rotate, the rotating shaft 404 drives the cam 405 to rotate, the cam 405 intermittently applies force to the screen plate 401 to make the screen plate 401 vibrate, thereby accelerating the screening speed of the screen plate 401 for gravel, and the gravel passing through the screen plate 401 is discharged from the finished sand outlet 103 as finished gravel, and the gravel that does not pass through the screen plate 401 enters the receiving hopper 503 from the guide plate 501, and then enters the lifting cylinder 504 from the bottom of the receiving hopper 503, and is lifted by the lifting auger 505 and discharged from the lifting outlet trough 507 to the top of the feed port 102, and finally falls into the sand making box 101 from the feed port 102 to be crushed again.
[0038] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.
Claims
1. A toothed roller sand making machine, comprising a sand making box (101), wherein the top of the sand making box (101) is provided with a feed inlet (102), and the bottom of the sand making box (101) is provided with a finished sand discharge port (103), characterized in that: An active crushing roller (104) is rotatably arranged in the sand making box (101), the front end of the active crushing roller (104) passes through the front side of the sand making box (101) and is connected to a main driving mechanism, a driven crushing roller (105) parallel to the active crushing roller (104) is arranged on the right side of the active crushing roller (104), the driven crushing roller (105) is connected to the sand making box (101) through a shifting mechanism, the active crushing roller (104) and the driven crushing roller (105) are connected through a main transmission mechanism, a screening mechanism is arranged in the sand making box (101) between the active crushing roller (104) and the finished sand discharge port (103), and a lifting mechanism is arranged on the front side of the sand making box (101) to put the sand that has not passed through the screening structure back into the sand making box (101) from the feed port (102).
2. A toothed roller sand making machine according to claim 1, characterized in that: The main driving mechanism comprises a driving motor (301) whose power output end is connected to the front end of the active crushing roller (104); the driving motor (301) is fixed on a motor fixing platform (302); and the motor fixing platform (302) is horizontally arranged on the front side of the sand making box (101).
3. A toothed roller sand making machine according to claim 1, characterized in that: The front and rear ends of the driven crushing roller (105) penetrate the sand making box (101); a shifting groove (209) is provided on the sand making box (101) at the position where the driven crushing roller (105) penetrates; the shifting mechanism comprises a bearing seat (201) coaxially penetrating and rotatably arranged on the front and rear sides of the driven crushing roller (105); the bearing seat (201) is located on the outside of the sand making box (101); a load-bearing platform (202) is provided at the position corresponding to the bearing seat (201) on the front side surface of the sand making box (101) and the rear side surface of the sand making box (101); the bearing seat (201) is slidably connected to the load-bearing platform (202); the left and right ends of the load-bearing platform (202) are A pair of fixed plates (203) are vertically provided, a screw (204) is rotatably provided between the two fixed plates (203), the screw (204) is threadedly connected to the lower part of the fixed plate (203), the fixed plate (203) is coaxially connected to a turbine (207) on the right side of the sand making box (101), two mutually parallel extension plates (205) are vertically provided on the right side surface of the sand making box (101) at positions corresponding to the turbine (207), a worm (206) is rotatably provided between the two extension plates (205), the worm (206) is meshed with the turbine (207), and a rotating disk (208) is connected to the front end of the worm (206).
4. A toothed roller sand making machine according to claim 1, characterized in that: The main transmission mechanism comprises a first connecting plate (303) having one end coaxially penetrating and rotatably arranged on the rear side of the active crushing roller (104); the other end of the first connecting plate (303) is rotatably connected to one end of a second connecting plate (304); the other end of the second connecting plate (304) is coaxially penetrating and rotatably arranged on the rear side of the driven crushing roller (105); the first connecting plate (303) and the second connecting plate (304) are both located behind the sand making box (101); the active crushing roller (104) is coaxially connected to a driving gear (305) behind the first connecting plate (303); A driven gear (306) is coaxially connected to the rotational connection between the connecting plate (303) and the second connecting plate (304), the driven gear (306) is meshed with the driving gear (305), a driving sprocket (307) is coaxially connected to the rear side of the driven gear (306), a driven sprocket (308) is coaxially connected to the driven crushing roller (105) behind the second connecting plate (304), the driven sprocket (308) and the driving sprocket (307) are on the same plane, and a chain (309) is provided between the driving sprocket (307) and the driven sprocket (308).
5. A toothed roller sand making machine according to claim 4, characterized in that: The screening structure comprises a screen plate (401) arranged directly below the gap between the active crushing roller (104) and the driven crushing roller (105); the lower surface of the screen plate (401) is connected to one end of a spring (402); there are four springs (402) distributed at four corners of the screen plate (401); the other end of the spring (402) is connected to a fixed foot (403); the fixed foot (403) is fixed on the inner wall of the sand making box (101); and a vibration component for driving the screen plate (401) to vibrate is provided on the rear side wall of the sand making box (101).
6. A toothed roller sand making machine according to claim 5, characterized in that: The vibration assembly includes a rotating shaft (404) that rotates and penetrates the rear side wall of the sand making box (101), the rotating shaft (404) is connected to a cam (405) on the inner side of the sand making box (101), the cam (405) is located below the rear end of the screen plate (401), and the rotating shaft (404) is connected to a driving unit on the outer side of the sand making box (101).
7. A toothed roller sand making machine according to claim 6, characterized in that: The driving unit comprises a driven pulley (406) coaxially connected to a rotating shaft (404), a driving pulley (407) coaxially connected to the rear side of the driving gear (305), and a belt (408) is provided between the driven pulley (406) and the driving pulley (407).
8. The toothed roller sand making machine according to claim 4, characterized in that: The specifications of the driving gear (305) and the driven gear (306) are the same, and the number of teeth of the driving sprocket (307) is smaller than the number of teeth of the driven sprocket (308).
9. The toothed roller sand making machine according to claim 5, characterized in that: The lifting mechanism comprises a discharge window (502) provided at a position corresponding to the sieve plate (401) on the front side of the sand making box (101); a guide plate (501) is rotatably provided at the front end of the sieve plate (401); the guide plate (501) is placed on the lower end of the discharge window (502); a receiving hopper (503) is provided on the front side of the sand making box (101) below the discharge window (502); the bottom of the receiving hopper (503) is connected to the bottom of a lifting cylinder (504); and the lifting cylinder (504) is vertically fixed to the sand making box (101) upward. On the left side, a lifting auger (505) is rotatably provided in the lifting cylinder (504), a lifting motor (506) is provided on the top of the lifting cylinder (504), a power output end of the lifting motor (506) is connected to the top of the lifting auger (505), a lifting discharge trough (507) is provided near the upper end of the lifting cylinder (504), the outlet of the lifting discharge trough (507) is located directly above the feed port (102), and the sieve plate (401) is tiltedly arranged in the sand making box (101) with the rear end higher than the front end.