Raw material crushing device for concrete production

Abstract

The invention discloses a raw material crushing device for concrete production, and belongs to the technical field of raw material crushing, the raw material crushing device comprises a treatment cylinder, the top of the treatment cylinder is connected with a feeding cylinder, the feeding cylinder is internally provided with a feeding assembly, and the treatment cylinder is internally provided with a material guide table, a static cone and a movable cone in sequence from top to bottom; an adjusting assembly is arranged between the material guiding table and the static cone. According to the stone crushing device, the circulating screening assembly and the conveying auger are arranged to be matched with the connecting cylinder to drive stone raw materials to be conveyed upwards, the stone raw materials enter the material guiding table again through the communicating pipe on the upper portion and then participate in the crushing process again, the stone raw materials which do not reach the standard are directionally conveyed back to the material guiding table through the conveying auger, and continuous closed-loop circulation is formed; and meanwhile, dynamic screening of the vibrating screen plate and cyclic crushing of the conveying auger are combined, it is guaranteed that particle size distribution of finished products is concentrated, the crushing process standard is improved, and the quality of the finished products is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of raw material crushing, and particularly relates to a raw material crushing device for concrete production. Background Art

[0002] Concrete is an engineering composite material formed by mixing cementitious materials, fine and coarse aggregates, and water in a certain proportion. Its main raw materials include cement, water, crushed stones, sand, etc. These raw materials play important roles in concrete respectively. Among them, before participating in production, the crushed stones need to be crushed first.

[0003] The document with the publication number of CN105214768B discloses a cone crusher, which includes a housing with a cavity. Inside the housing, there is a main shaft arranged axially and having a moving cone. The moving cone is circumferentially provided with a moving cone liner, and the inner circumferential side of the housing has a static cone liner in the shape of a conical cylinder. A crushing cavity is formed between the moving cone liner and the static cone liner and is located inside the cavity. The main shaft is connected with a crushing driving mechanism. The upper end of the main shaft is connected to the housing through a universal movable connection structure. The moving cone liner is provided with a plurality of arc-shaped grooves arranged axially along the moving cone liner. The outer circumferential side of the static cone liner is provided with a plurality of annular grooves arranged axially in sequence and the static cone liner is of a split structure. The advantages are: good stability, the upper boom joint bearing replaces the boom bushing to achieve the best balance between bearing self-lubrication and service life, the upper liner can be replaced in installments when worn, saving maintenance costs, and the liner can be installed without filling materials. However, in the actual crushing process, due to the eccentric rotation of the moving cone, the gap between the moving cone and the static cone is always larger on one side and smaller on the other side, and some stones will pass through the larger gap, thus affecting its actual crushing effect. Therefore, improvement is needed. Summary of the Invention

[0004] The purpose of the present invention is to provide a raw material crushing device for concrete production to solve the problem that due to the eccentric rotation of the moving cone, the gap between the moving cone and the static cone is always larger on one side and smaller on the other side, and some stones will pass through the larger gap, thus affecting its actual crushing effect.

[0005] In order to achieve the above purpose, the present invention adopts the following technical scheme:

[0006] A raw material crushing device for concrete production includes a processing cylinder. The top of the processing cylinder is connected with a feeding cylinder. A feeding assembly is arranged inside the feeding cylinder. A guiding platform, a static cone, and a moving cone are sequentially arranged in the processing cylinder from top to bottom. An adjusting assembly is arranged between the guiding platform and the static cone. An eccentric sleeve is sleeved at the bottom of the moving cone. The outer surface of the eccentric sleeve is rotatably connected with a fixed socket. A circulating screening assembly is arranged at the bottom of the fixed socket.

[0007] The cyclic screening assembly includes a vibrating sieve plate. A protective housing is connected to the bottom of the vibrating sieve plate. A plurality of moving rods capable of reciprocating movement are arranged inside the protective housing. One end of the moving rod is connected with a vibrating block. During the movement of the vibrating block, it periodically fits against the bottom of the vibrating sieve plate. A plurality of connecting cylinders distributed in a circumferential array are arranged on the outer peripheral side of the treatment cylinder. A conveying auger is rotatably connected inside the connecting cylinder. The conveying auger cooperates with the connecting cylinder to re-convey the raw materials blocked by the vibrating sieve plate into the treatment cylinder.

[0008] As a further description of the above technical solution:

[0009] The vibrating sieve plate is connected to the inner wall of the treatment cylinder. The bottom of the fixed sleeve seat is connected to the top of the vibrating sieve plate. The eccentric sleeve is rotatably connected to the vibrating sieve plate. The cross-sectional shape of the vibrating sieve plate is a trapezoid that is narrow at the top and wide at the bottom.

[0010] As a further description of the above technical solution:

[0011] The upper and lower ends of the connecting cylinder are communicated with symmetrically arranged communicating pipes. The other ends of the communicating pipes are communicated with the treatment cylinder. One end of the conveying auger is connected with a connecting shaft. One end of the connecting shaft extends outside the connecting cylinder and is connected with a transmission gear. And the inner circumferential sides of a plurality of transmission gears are meshed with the same driving toothed ring. The outer circumferential side of the driving toothed ring is meshed with a driving gear. The bottom of the driving gear is connected with a driving motor. One side of the driving motor is fixedly installed on one side of the treatment cylinder through a mounting plate.

[0012] As a further description of the above technical solution:

[0013] A plurality of mounting frames arranged in a circumferential array are connected to the bottom of the vibrating sieve plate. A sliding hole is formed on one side of the mounting frame. The moving rod is slidably connected in the sliding hole. The end of the moving rod away from the vibrating block is connected with a fitting wheel. A linkage spring is sleeved on the outer surface of the moving rod. The two ends of the linkage spring are respectively connected with one side of the fitting wheel and one side of the mounting frame. The bottom of the eccentric sleeve is connected with a main shaft. The main shaft is rotatably connected inside the protective housing. A rotating plate is connected to the outer surface of the main shaft. A plurality of fitting blocks distributed in a circumferential array are connected to the top of the rotating plate. During the rotation of the fitting block, it periodically fits against the fitting wheel. The cross-sectional shape of the fitting block is a trapezoid.

[0014] As a further description of the above technical solution:

[0015] The feeding assembly includes a plurality of swinging plates distributed in a circular array, one side of the swinging plate is hinged to one side of the inner wall of the feeding barrel through a hinge seat, a connecting rod is hinged to the side of the swinging plate away from the hinge seat, a sliding rod is hinged to the side of the connecting rod away from the swinging plate, the other end of the sliding rod extends to the outside of the feeding barrel and is connected to an extrusion wheel, a return spring is sleeved on one side of the extrusion wheel, and two ends of the return spring are respectively connected to one side of the extrusion wheel and the outer wall of the feeding barrel.

[0016] As a further description of the above technical solution:

[0017] The outer peripheral side of the feed barrel is rotatably connected to a rotating ring, and the inner wall of the rotating ring is connected to a plurality of extrusion blocks distributed in a circular array. The extrusion blocks periodically fit with the extrusion wheels during rotation, and the cross-sectional shape of the extrusion blocks is a trapezoid. The bottom of the rotating ring is connected to the top of the driving gear ring.

[0018] As a further description of the above technical solution:

[0019] The adjustment assembly includes a plurality of movable cylinders distributed in a circumferential array, the top of the movable cylinder is connected to the bottom of the material guide table, and the bottom of the movable cylinder is connected to the top of the static cone.

[0020] As a further description of the above technical solution:

[0021] A plurality of limiting slide grooves distributed in a circumferential array are provided on the outer circumference of the static cone, a limiting slide rod is slidably connected in the limiting slide groove, and a side of the limiting slide rod away from the limiting slide groove is connected to the inner wall of the processing cylinder.

[0022] As a further description of the above technical solution:

[0023] The outer wall of the material guide platform is connected to the inner wall of the processing cylinder, the static cone is slidably connected in the processing cylinder, a positioning groove is opened on the top of the fixed sleeve, a limiting sleeve is movably connected in the positioning groove, and the other end of the limiting sleeve is connected to the bottom of the moving cone.

[0024] As a further description of the above technical solution:

[0025] One end of the main shaft away from the eccentric sleeve extends to the outside of the processing cylinder and is connected to a transmission wheel, which is connected to an external driving device through an external transmission belt. A plurality of supporting legs distributed in a circular array are connected to the outer peripheral side of the processing cylinder. The bottom of the processing cylinder is connected to two symmetrically arranged discharge pipes, and a control valve is arranged inside the discharge pipe.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0027] 1. In the present invention, by setting up a cyclic screening component, after the crushed stone raw materials fall onto the vibrating sieve plate, the main shaft vibrates the vibrating sieve plate through the rotating plate, the fitting block, the linkage spring, the fitting wheel and the moving rod vibration block. The stone raw materials with qualified sizes fall through the vibrating sieve plate to the bottom of the processing cylinder, and the stone raw materials with unqualified sizes move into the connecting pipe through the vibrating sieve plate and finally enter the connecting cylinder. The driving motor drives the conveying auger to rotate through the driving gear, the driving gear ring and the transmission gear. The conveying auger cooperates with the connecting cylinder to convey the stone raw materials upward, and allows the stone raw materials to re-enter the feeding table through the upper connecting pipe, so as to participate in the crushing process again. The unqualified stone raw materials are directionally returned to the feeding table by the conveying auger to form a continuous closed-loop cycle, realizing the automatic return and repeated crushing of unqualified materials, significantly improving the raw material utilization rate. At the same time, the dynamic screening of the vibrating sieve plate is combined with the cyclic crushing of the conveying auger to ensure that the finished product particle size distribution is concentrated, improve the crushing process standard, and improve the quality of the finished product.

[0028] 2. In the present invention, by setting up a feeding component, the driving motor drives the swing plate to swing reciprocally through the driving gear ring, the rotating ring rotation, the rotating ring, the extrusion block, the extrusion wheel, the return spring, the sliding rod and the connecting rod, causing the periodic expansion and contraction of the feeding port, forming a preliminary screening mechanism. The smaller stone raw materials pass through preferentially when the feeding port contracts, and the larger stones enter during the expansion stage. On the one hand, it realizes graded feeding, reduces the load of subsequent crushing processes, reduces energy consumption and improves the crushing efficiency. On the other hand, it avoids the accumulation and jamming of large stone raw materials, reduces the risk of equipment blockage, can adaptively and evenly distribute the stone raw materials into the processing cylinder, prevents instantaneous overload, and improves the feeding smoothness.

[0029] 3. In the present invention, by setting up an adjustment component, the movable cylinder drives the static cone to move, changing the size of the crushing cavity formed between the static cone and the moving cone, so as to be able to control the size of the stone finished product, making the device able to meet different crushing requirements and improving the applicability of the device. At the same time, when the hard materials that cannot be crushed jam the moving cone and the static cone, by moving the static cone upward, the jamming situation of the device can be quickly solved, reducing the maintenance and repair cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is the overall three-dimensional structure schematic diagram of the present invention;

[0031] Figure 2 is the three-dimensional structure schematic diagram of another perspective of the present invention;

[0032] Figure 3 is the internal sectional three-dimensional structure schematic diagram of the present invention;

[0033] Figure 4 is the three-dimensional structure schematic diagram of the feeding component of the present invention;

[0034] Figure 5 Partial three-dimensional structural schematic diagram of the feeding component of the present invention;

[0035] Figure 6 Internal split structural schematic diagram of the present invention;

[0036] Figure 7 Internal split structural schematic diagram of the present invention from another perspective;

[0037] Figure 8 For the present invention Figure 7 Enlarged structural schematic diagram of part A;

[0038] Figure 9 Three-dimensional structural schematic diagram of the connecting cylinder and the conveying auger in the present invention.

[0039] Legend:

[0040] 1. Feeding cylinder; 2. Feeding component; 201. Rotating ring; 202. Extrusion block; 203. Swing plate; 204. Extrusion wheel; 205. Return spring; 206. Sliding rod; 207. Connecting rod; 3. Processing cylinder; 4. Circulating screening component; 401. Driving gear; 402. Driving tooth ring; 403. Driving motor; 404. Driving gear; 405. Connecting cylinder; 406. Vibration sieve plate; 407. Protective housing; 408. Rotating plate; 409. Mounting frame; 410. Vibration block; 411. Moving rod; 412. Linkage spring; 413. Fitting block; 414. Fitting wheel; 415. Conveying auger; 416. Connecting pipe; 5. Support leg; 6. Discharge pipe; 7. Driving wheel; 8. Feeding table; 9. Adjusting component; 901. Moving cylinder; 902. Limit slide bar; 903. Limit chute; 10. Static cone; 11. Moving cone; 12. Fixed socket; 13. Main shaft; 14. Limit sleeve; 15. Eccentric sleeve. Specific embodiments

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] Please refer to Figures 1-9 , the present invention provides a technical solution:

[0043] A raw material crushing device for concrete production, comprising a processing cylinder 3, a feeding cylinder 1 is connected to the top of the processing cylinder 3, a feeding assembly 2 is arranged in the feeding cylinder 1, a material guiding platform 8, a static cone 10 and a moving cone 11 are sequentially arranged in the processing cylinder 3 from top to bottom, an adjusting assembly 9 is arranged between the material guiding platform 8 and the static cone 11, an eccentric sleeve 15 is sleeved at the bottom of the moving cone 11, the outer surface of the eccentric sleeve 15 is rotatably connected with a fixed sleeve seat 12, a circulating screening assembly 4 is arranged at the bottom of the fixed sleeve seat 12, the outer wall of the material guiding platform 8 is connected with the inner wall of the processing cylinder 3, the static cone 10 is slidably connected in the processing cylinder 3, a positioning groove is formed at the top of the fixed sleeve seat 12, a limiting sleeve 14 is movably connected in the positioning groove, and the other end of the limiting sleeve 14 is connected with the bottom of the moving cone 11. One end of the main shaft 13 far away from the eccentric sleeve 15 extends to the outside of the processing cylinder 3 and is connected with a transmission wheel 7, the transmission wheel 7 is in transmission connection with an external driving device through an external transmission belt, a plurality of support legs 5 distributed in a circumferential array are connected to the outer peripheral side of the processing cylinder 3, two symmetrically arranged discharge pipes 6 are communicated with the bottom of the processing cylinder 3, and a control valve is arranged inside the discharge pipe 6.

[0044] The circulating screening assembly 4 includes a vibrating sieve plate 406. A protective housing 407 is connected to the bottom of the vibrating sieve plate 406. A plurality of movable rods 411 capable of reciprocating movement are arranged inside the protective housing 407. One end of the movable rod 411 is connected to a vibrating block 410. During the movement of the vibrating block 410, it periodically fits against the bottom of the vibrating sieve plate 406. A plurality of connecting cylinders 405 distributed in a circumferential array are arranged on the outer peripheral side of the treatment cylinder 3. A conveying auger 415 is rotatably connected inside the connecting cylinder 405. The conveying auger 415 cooperates with the connecting cylinder 405 to re-convey the raw materials blocked by the vibrating sieve plate 406 into the treatment cylinder 3. The vibrating sieve plate 406 is connected to the inner wall of the treatment cylinder 3. The bottom of the fixed sleeve base 12 is connected to the top of the vibrating sieve plate 406. The eccentric sleeve 15 is rotatably connected to the vibrating sieve plate 406. The cross-sectional shape of the vibrating sieve plate 406 is a trapezoid that is narrow at the top and wide at the bottom. The upper and lower ends of the connecting cylinder 405 are communicated with symmetrically arranged communicating pipes 416. The other ends of the communicating pipes 416 are communicated with the treatment cylinder 3. One end of the conveying auger 415 is connected to a connecting shaft. One end of the connecting shaft extends outside the connecting cylinder 405 and is connected to a transmission gear 401. And a same driving tooth ring 402 is meshed with the inner circumferential sides of a plurality of transmission gears 401. The outer circumferential side of the driving tooth ring 402 is meshed with a driving gear 404. The bottom of the driving gear 404 is connected to a driving motor 403. One side of the driving motor 403 is fixedly installed on one side of the treatment cylinder 3 through a mounting plate. A plurality of mounting brackets 409 arranged in a circumferential array are connected to the bottom of the vibrating sieve plate 406. A sliding hole is formed on one side of the mounting bracket 409. The movable rod 411 is slidably connected in the sliding hole. The end of the movable rod 411 away from the vibrating block 410 is connected to a fitting wheel 414. A linkage spring 412 is sleeved on the outer surface of the movable rod 411. The two ends of the linkage spring 412 are respectively connected to one side of the fitting wheel 414 and one side of the mounting bracket 409. The bottom of the eccentric sleeve 15 is connected to a main shaft 13. The main shaft 13 is rotatably connected inside the protective housing 407. A rotating plate 408 is connected to the outer surface of the main shaft 13. A plurality of fitting blocks 413 distributed in a circumferential array are connected to the top of the rotating plate 408. During the rotation of the fitting blocks 413, they periodically fit against the fitting wheel 414. The cross-sectional shape of the fitting blocks 413 is a trapezoid.

[0045] The implementation method is specifically as follows: By setting the circulating screening component 4, after the crushed stone raw materials fall onto the vibrating sieve plate 406, the main shaft 13 vibrates the vibrating sieve plate 406 through the rotating plate 408, the fitting block 413, the linkage spring 412, the fitting wheel 414, the moving rod 411 and the vibrating block 410. The stone raw materials with qualified sizes fall into the bottom of the processing cylinder 3 through the vibrating sieve plate 406, and the stone raw materials with unqualified sizes move into the connecting pipe 416 through the vibrating sieve plate 406 and finally enter the connecting cylinder 405. The driving motor 403 drives the conveying auger 415 to rotate through the driving gear 404, the driving gear ring 402 and the transmission gear 401. The conveying auger 415 cooperates with the connecting cylinder 405 to convey the stone raw materials upward, and enables the stone raw materials to re-enter the feeding table 8 through the upper connecting pipe 416, so as to participate in the crushing process again. The unqualified stone raw materials are directionally returned to the feeding table 8 through the conveying auger 415, forming a continuous closed-loop cycle, realizing the automatic return and repeated crushing of unqualified materials, significantly improving the utilization rate of raw materials. At the same time, the dynamic screening of the vibrating sieve plate 406 is combined with the cyclic crushing of the conveying auger 415 to ensure that the finished product particle size distribution is concentrated and improve the crushing process standard.

[0046] The feeding component 2 includes a plurality of swing plates 203 distributed in a circumferential array. One side of the swing plate 203 is hinged to one side of the inner wall of the feeding cylinder 1 through a hinge seat. A connecting rod 207 is hinged to the side of the swing plate 203 away from the hinge seat. A sliding rod 206 is hinged to the side of the connecting rod 207 away from the swing plate 203. The other end of the sliding rod 206 extends to the outside of the feeding cylinder 1 and is connected with a pressing wheel 204. A return spring 205 is sleeved on one side of the pressing wheel 204. Both ends of the return spring 205 are respectively connected with one side of the pressing wheel 204 and the outer wall of the feeding cylinder 1. A rotating ring 201 is rotatably connected to the outer peripheral side of the feeding cylinder 1. A plurality of pressing blocks 202 distributed in a circumferential array are connected to the inner wall of the rotating ring 201. The pressing blocks 202 are periodically in contact with the pressing wheel 204 during rotation. The cross-sectional shape of the pressing block 202 is trapezoidal. The bottom of the rotating ring 201 is connected to the top of the driving gear ring 402.

[0047] The implementation method is specifically as follows: By setting the feeding component 2, the driving motor 403 drives the swing plate 203 to swing reciprocally through the driving gear ring 402, the rotation of the rotating ring 201, the rotating ring 201, the pressing block 202, the pressing wheel 204, the return spring 205, the sliding rod 206 and the connecting rod 207, so that the feeding port expands and contracts periodically, forming a preliminary screening mechanism. The smaller stone raw materials pass through preferentially when the feeding port contracts, and the larger stones enter during the expansion stage. On the one hand, it realizes classified feeding, reduces the load of subsequent crushing processes, reduces energy consumption and improves the crushing efficiency. On the other hand, it avoids the accumulation and jamming of large stone raw materials, reduces the risk of equipment blockage, and can adaptively and evenly distribute the stone raw materials into the processing cylinder 3 to prevent instantaneous overload.

[0048] The adjustment component 9 includes a plurality of movable cylinders 901 distributed in a circular array, the top of the movable cylinder 901 is connected to the bottom of the material guide table 8, the bottom of the movable cylinder 901 is connected to the top of the static cone 10, and a plurality of limiting slide grooves 903 distributed in a circular array are opened on the outer peripheral side of the static cone 10. The limiting slide groove 903 is slidably connected with a limiting slide rod 902, and the side of the limiting slide rod 902 facing away from the limiting slide groove 903 is connected to the inner wall of the processing cylinder 3.

[0049] The specific implementation method is as follows: the movable cylinder 901 drives the static cone 10 to move, and changes the size of the crushing chamber formed between the static cone 10 and the dynamic cone 11, so as to control the size of the finished stone products, so that the device can meet different crushing requirements, and improves the applicability of the device. At the same time, when the dynamic cone 11 and the static cone 10 are stuck with hard materials that cannot be crushed, the static cone 10 can be moved upward to quickly solve the problem of the device being stuck, thereby reducing maintenance and repair costs. At the same time, the setting of the limiting groove 903 and the limiting slide bar 902 can improve the stability of the movement of the static cone 10, and through the limiting cooperation between the limiting groove 903 and the limiting slide bar 902, the shaking and deflection of the static cone 10 during crushing can be reduced, thereby reducing the load on the static cone 10.

[0050] Working principle: When in use, the staff connects the external driving device to the transmission wheel 7 through the external transmission belt. After that, the staff starts the external driving device, and the external driving device drives the transmission wheel 7 to rotate through the transmission belt. The transmission wheel 7 drives the internal parts to operate through the main shaft 13.

[0051] The staff conveys the stone raw materials into the feed barrel 1 through the external conveying device. During this process, the driving motor 403 drives the driving gear ring 402 to rotate, the driving gear ring 402 drives the rotating ring 201 to rotate, and the rotating ring 201 drives multiple extrusion blocks 202 to rotate. The extrusion blocks 202 transmit power to the extrusion wheel 204 to move the extrusion wheel 204. At the same time, the reset spring 205 drives the extrusion wheel 204 to reset, so that the extrusion wheel 204 reciprocates, and the extrusion wheel 204 drives the sliding rod 206 to reciprocate. The sliding rod 206 drives the swing plate 203 to swing back and forth around the hinge seat through the connecting rod 207, so that the feed port expands and contracts periodically, forming a preliminary screening mechanism.

[0052] The stone raw materials enter the guide table 8 after being classified and buffered by the swing plate 203. The stone raw materials enter between the static cone 10 and the moving cone 11 through the funnel-shaped inclination design of the guide table 8. Through the eccentric rotation of the moving cone 11, the moving cone 11 cooperates with the static cone 10 to extrude, shear and crush the stone raw materials, thereby completing the crushing of the stone raw materials. The crushed stone raw materials fall onto the vibrating sieve plate 406. During this process, the main shaft 13 drives the rotating plate 408 to rotate, the rotating plate 408 drives the fitting block 413 to rotate, the fitting block 413 cooperates with the linkage spring 412 to drive the fitting wheel 414 to make a reciprocating motion, the fitting wheel 414 drives the moving rod 411 to vibrate reciprocally, and the moving rod 411 drives the vibrating block 410 to vibrate the vibrating sieve plate 406, so that the vibrating sieve plate 406 screens the crushed stone raw materials. The stone raw materials with qualified sizes fall through the vibrating sieve plate 406 to the bottom of the processing cylinder 3. The stone raw materials with unqualified sizes move into the connecting pipe 416 under the vibration of the vibrating sieve plate 406 and finally enter the connecting cylinder 405. At this time, the driving motor 403 drives the driving gear 404 to drive the driving gear ring 402 to rotate, the driving gear ring 402 drives the transmission gear 401 to rotate, the transmission gear 401 drives the conveying auger 415 to rotate, the conveying auger 415 cooperates with the connecting cylinder 405 to convey the stone raw materials upward, and the stone raw materials re-enter the guide table 8 through the upper connecting pipe 416, so as to participate in the crushing process again.

[0053] The staff starts the movable air cylinder 901, and the movable air cylinder 901 drives the static cone 10 to move in the vertical direction, thereby changing the size of the crushing cavity formed between the static cone 10 and the moving cone 11, so as to be able to control the size of the stone finished products, enabling the device to meet different crushing requirements.

[0054] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A raw material crushing device for concrete production, comprising a processing cylinder (3), the top of which is connected to a feeding cylinder (1), characterized in that: The feed cylinder (1) is provided with a feed assembly (2), the processing cylinder (3) is provided with a material guide platform (8), a static cone (10) and a dynamic cone (11) in order from top to bottom, an adjustment assembly (9) is provided between the material guide platform (8) and the static cone (11), an eccentric sleeve (15) is sleeved on the bottom of the dynamic cone (11), a fixed sleeve seat (12) is rotatably connected to the outer surface of the eccentric sleeve (15), and a circulating screening assembly (4) is provided on the bottom of the fixed sleeve seat (12); The circulating screening component (4) includes a vibrating screen plate (406), the bottom of which is connected to a protective shell (407), a plurality of reciprocating movable rods (411) are arranged inside the protective shell (407), one end of the movable rod (411) is connected to a vibrating block (410), and the vibrating block (410) periodically fits with the bottom of the vibrating screen plate (406) during movement, and a plurality of connecting cylinders (405) distributed in a circular array are arranged on the outer peripheral side of the processing cylinder (3), a conveying auger (415) is rotatably connected inside the connecting cylinder (405), and the conveying auger (415) cooperates with the connecting cylinder (405) to transport the raw materials blocked by the vibrating screen plate (406) back to the processing cylinder (3).

2. A raw material crushing device for concrete production according to claim 1, characterized in that: The vibrating screen plate (406) is connected to the inner wall of the treatment cylinder (3), the bottom of the fixed sleeve (12) is connected to the top of the vibrating screen plate (406), the eccentric sleeve (15) is rotatably connected to the vibrating screen plate (406), and the cross-sectional shape of the vibrating screen plate (406) is a trapezoid that is narrow at the top and wide at the bottom.

3. A raw material crushing device for concrete production according to claim 1, characterized in that: The upper and lower ends of the connecting cylinder (405) are connected to symmetrically arranged connecting pipes (416), and the other end of the connecting pipe (416) is connected to the processing cylinder (3). One end of the conveying auger (415) is connected to a connecting shaft, and one end of the connecting shaft extends to the outside of the connecting cylinder (405) and is connected to a transmission gear (401), and the inner circumference of the plurality of transmission gears (401) is meshedly connected to the same driving gear ring (402), and the outer circumference of the driving gear ring (402) is meshedly connected to a driving gear (404), and the bottom of the driving gear (404) is connected to a driving motor (403), and one side of the driving motor (403) is fixedly mounted to one side of the processing cylinder (3) through a mounting plate.

4. A raw material crushing device for concrete production according to claim 1, characterized in that: The bottom of the vibration screen plate (406) is connected to a plurality of mounting frames (409) arranged in a circumferential array, a sliding hole is opened on one side of the mounting frame (409), the moving rod (411) is slidably connected to the sliding hole, the end of the moving rod (411) away from the vibration block (410) is connected to a fitting wheel (414), the outer surface of the moving rod (411) is sleeved with a linkage spring (412), and the two ends of the linkage spring (412) are respectively connected to one side of the fitting wheel (414) and the mounting frame (409). The eccentric sleeve (15) is connected to one side of the mounting frame (409), the bottom of the eccentric sleeve (15) is connected to the main shaft (13), the main shaft (13) is rotatably connected to the protective shell (407), the outer surface of the main shaft (13) is connected to a rotating plate (408), the top of the rotating plate (408) is connected to a plurality of fitting blocks (413) distributed in a circular array, the fitting blocks (413) are periodically fitted with the fitting wheel (414) during the rotation process, and the cross-sectional shape of the fitting blocks (413) is a trapezoid.

5. A raw material crushing device for concrete production according to claim 3, characterized in that: The feeding assembly (2) comprises a plurality of swinging plates (203) distributed in a circular array, one side of the swinging plate (203) being hinged to one side of the inner wall of the feeding barrel (1) via a hinge seat, a connecting rod (207) being hinged to the side of the swinging plate (203) away from the hinge seat, a sliding rod (206) being hinged to the side of the connecting rod (207) away from the swinging plate (203), the other end of the sliding rod (206) extending to the outside of the feeding barrel (1) and being connected to an extrusion wheel (204), a return spring (205) being sleeved on one side of the extrusion wheel (204), and two ends of the return spring (205) being respectively connected to one side of the extrusion wheel (204) and the outer wall of the feeding barrel (1).

6. A raw material crushing device for concrete production according to claim 5, characterized in that: The outer peripheral side of the feed barrel (1) is rotatably connected to a rotating ring (201), and the inner wall of the rotating ring (201) is connected to a plurality of extrusion blocks (202) distributed in a circular array. The extrusion blocks (202) periodically fit with the extrusion wheels (204) during rotation, and the cross-sectional shape of the extrusion blocks (202) is a trapezoid. The bottom of the rotating ring (201) is connected to the top of the driving gear ring (402).

7. A raw material crushing device for concrete production according to claim 1, characterized in that: The adjustment assembly (9) comprises a plurality of movable cylinders (901) distributed in a circular array, the top of the movable cylinder (901) being connected to the bottom of the material guide platform (8), and the bottom of the movable cylinder (901) being connected to the top of the static cone (10).

8. A raw material crushing device for concrete production according to claim 7, characterized in that: The outer peripheral side of the static cone (10) is provided with a plurality of limiting slide grooves (903) distributed in a circular array, and a limiting slide rod (902) is slidably connected inside the limiting slide groove (903), and the side of the limiting slide rod (902) facing away from the limiting slide groove (903) is connected to the inner wall of the processing cylinder (3).

9. A raw material crushing device for concrete production according to claim 1, characterized in that: The outer wall of the material guide platform (8) is connected to the inner wall of the processing cylinder (3), the static cone (10) is slidably connected in the processing cylinder (3), a positioning groove is provided on the top of the fixed sleeve (12), a limiting sleeve (14) is movably connected in the positioning groove, and the other end of the limiting sleeve (14) is connected to the bottom of the moving cone (11).

10. A raw material crushing device for concrete production according to claim 4, characterized in that: One end of the main shaft (13) away from the eccentric sleeve (15) extends to the outside of the processing cylinder (3) and is connected to a transmission wheel (7). The transmission wheel (7) is connected to an external driving device through an external transmission belt. The outer peripheral side of the processing cylinder (3) is connected to a plurality of supporting legs (5) distributed in a circular array. The bottom of the processing cylinder (3) is connected to two symmetrically arranged discharge pipes (6), and a control valve is arranged inside the discharge pipe (6).

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