Multi-stage crushing waste sand crushing device

Abstract

The invention relates to the technical field of waste sand crushing devices, in particular to a multistage crushing waste sand crushing device which comprises a base and a discharging assembly, and the discharging assembly is assembled to drive a conical block to rotate through a first motor to shake waste sand; the screening assembly is assembled to screen the waste sand by changing the vertical position of a base and changing the inclination angle of a screening plate through the power of a first motor; the coarse crushing assembly is assembled to drive a connecting shaft to rotate through a motor II so as to coarsely crush the waste sand; the material returning assembly is located on one side of the coarse crushing assembly, and the material returning assembly is assembled to drive a circular shaft to rotate through power of a second motor, so that a feeding belt conveys the waste sand screened out by the screening assembly back to the coarse crushing assembly; according to the waste sand coarse crushing and fine crushing device, the discharging assembly, the screening assembly, the coarse crushing assembly, the material returning assembly and the fine crushing assembly are adopted, coarse crushing and fine crushing can be conducted on the waste sand, and meanwhile products obtained after two times of crushing can be screened.

Description

Technical Field

[0001] The invention relates to the technical field of waste sand crushing devices, in particular to a multi-stage crushing waste sand crushing device. Background Art

[0002] The waste sand crushing device can crush industrial waste sand so that it can be used again in the construction, casting and other industries, realizing resource recycling and reducing new sand mining. It can also extract valuable components from waste sand, reduce the pollution of waste sand to the environment, and avoid its random stacking or landfill to occupy land and pollute soil and water sources. At the same time, the dust removal equipment can reduce dust emissions, improve air quality, reduce the production costs of enterprises that generate waste sand, reduce the cost of purchasing new sand and the cost of waste sand disposal, improve the market competitiveness of enterprises, and drive the development of related equipment manufacturing, technical services and other industries, creating employment opportunities and economic growth points.

[0003] The Chinese patent with publication number CN110000332A discloses a waste sand crushing and screening machine, which mainly solves the problem of simultaneous crushing and screening operations. During the rotation of the cylinder, the first crushing plate, the second crushing plate and the collision plate perform collision and crushing operations, and the waste sand of qualified diameter is discharged along the screen into the material cover under the action of centrifugal force. The waste residue that cannot be crushed will be automatically discharged when the cylinder is reversed.

[0004] However, in the prior art, waste sand is usually directly subjected to a quantitative one-time or multiple-time crushing, or a screening process is added after one or more crushings, but waste sand crushing is not subjected to multi-stage crushing and multiple screenings. On the one hand, it is difficult to ensure the quality of waste sand. The uneven particle size leads to unstable concrete performance and affected casting quality when used in the construction, casting and other industries, and the scope of application is greatly limited. At the same time, it will also aggravate equipment wear. Larger particles are easy to clog equipment and smaller particles are easy to accumulate, increasing maintenance costs and energy consumption. On the other hand, this will cause a waste of resources. A large amount of waste sand is accumulated or landfilled, and the useful components therein cannot be recovered.

[0005] Therefore, a multi-stage crushing waste sand crushing device is needed to solve the problem of low crushing and screening efficiency without multi-stage crushing and multiple screening. Summary of the invention

[0006] In order to solve the problems of inconvenience in screening waste sand that has been crushed multiple times, inconvenience in classifying and processing waste sand after multiple screenings, and high cost and energy consumption, the present application provides a multi-stage crushing waste sand crushing device.

[0007] The technical solution of the present invention is: a multi-stage crushing waste sand crushing device, comprising a base.

[0008] Furthermore, a material unloading component is arranged on the top of the base, and is equipped to drive the cone block to rotate through a motor, and the vertical position of the connecting plate is changed by the shape of the cone block, and the connecting plate changes the vertical position of the screen plate through a guide rod to shake the waste sand; the material unloading component includes a material shell, which is fixed to the top of the base, and the motor is fixed to the top of the base, and the motor is located on one side of the material shell, and a transmission rod is rotatably installed through the side of the material shell close to the motor, and the two ends of the transmission rod are located outside the material shell, one end of the transmission rod is fixedly connected to the output end of the motor, and the two cone blocks are respectively fixed to the outside of the two ends of the transmission rod, and two guide holes are respectively opened on both sides of the material shell, and the two holes located on the same side of the transmission rod A guide rod is placed on the inner side of each guide hole, a sieve plate is fixed on the outer side of the two guide rods, and the sieve plate is located on the inner side of the material shell, a connecting plate is fixed on the outer side of one end of the two guide rods close to the motor, and another connecting plate is fixed on the outer side of the other end of the two guide rods, the two connecting plates are both located on the outside of the material shell, and the tops of the two conical blocks are respectively fitted with the bottoms of the two connecting plates, a group of fixed plates is fixed on both sides of the material shell, and the two fixed plates form a group, the two groups of fixed plates are respectively located on the tops of the two connecting plates, two limiting rods are fixed on the tops of the two connecting plates, the four limiting rods are all located on the inner sides of the four fixed plates, a spring is fixed on the bottom of each fixed plate, the other end of each spring is fixed to the top of the connecting plate, and the four springs are all located on the outer sides of the four limiting rods.

[0009] Furthermore, a screening assembly is arranged on the top of the unloading assembly, and is assembled to change the vertical position of the base by relying on the power of motor one. The base drives the meshing plate to move in the vertical direction through the telescopic rod, so that the gear drives the rotating shaft to rotate, changes the inclination angle of the screening plate, and screens the waste sand; the screening assembly includes a screen shell, which is fixed to the top of the material shell, and the rotating shaft is rotatably installed through the side of the screen shell close to motor one, the gear is fixed to the outer side of one end of the rotating shaft close to motor one, a limiting shell is fixed on the side of the screen shell close to the gear, the base is fixed to the top of the connecting plate close to motor one, two telescopic rods are fixed to the top of the base and penetrate, the meshing frame is fixed to the top of the output end of the two telescopic rods, the inner side of the meshing frame is meshed with the gear, the meshing frame is located on the inner side of the limiting shell, and the screening plate is fixed to the outer side of the rotating shaft.

[0010] Furthermore, a left groove is provided at the top of the screening plate, a baffle is rotatably installed on the inner side of the left groove, a spring is fixed on the inner side of the baffle, an inlay is fixed on the other end of the spring, a movable shaft is rotatably installed on the inner side of the other end of the inlay, a side groove is provided on the inner wall of the screen shell adjacent to the side close to the gear, movable grooves are respectively provided on the inner walls on both sides of the side groove, and both ends of the movable shaft are located on the inner sides of the two movable grooves.

[0011] Furthermore, a through groove is provided on the top of the screening plate, and the through groove is symmetrically arranged on the top of the screening plate with the left side, a baffle is rotatably installed on the inner side of the through groove, a spring is fixed to the other end of the baffle, a pull plate is fixed to the other end of the spring, and the baffle is located on the inner side of the pull plate, a guide rod is rotatably installed on the inner side of the other end of the pull plate, guide grooves are provided on the inner wall of the material shell on one side close to the gear and the inner wall on the side opposite to it, and both ends of the guide rod are located on the inner sides of the two guide grooves.

[0012] Furthermore, a coarse crushing component is arranged on the top of the screening component, and is assembled to coarsely crush the waste sand by driving the connecting shaft to rotate through the second motor; the coarse crushing component includes a shell, the shell is fixed to the top of the screen shell, a feed hopper is fixed on the top of the shell, a bracket is fixed on one side of the shell, the second motor is fixed on the inner side of the bracket, and the second motor is located on the top of the first motor, a support plate is fixed to the inner wall of the shell adjacent to the side where the bracket is fixed, a sealing plate is fixed to the inner wall of the shell adjacent to the side where the bracket is fixed, one connecting shaft is fixed to the inner side of the sealing plate, and the other connecting shaft is placed on the inner side of the support plate, the output end of the second motor is fixedly connected to one end of the connecting shaft inside the sealing plate, and side plates are respectively fixed at both ends of the other connecting shaft, and the two side plates are located on the outside of the shell, and the two side plates are fixed with limit rods on the side away from the second motor, and the outer side of each limit rod is slidably connected with a fixed plate, and each fixed plate is fixedly connected to the shell on the side close to the shell, and the fixed plate and the side plate on the same side of the shell are connected by a spring, and the spring is located on the outside of the limit rod.

[0013] Furthermore, a double-groove pulley is fixed on the outer side of the output end of the second motor, a second belt is installed in the groove of the double-groove pulley close to the shell, and a first belt is installed in the groove of the double-groove pulley close to the second motor.

[0014] Furthermore, a return material assembly is arranged on the top of the unloading material assembly and is located on one side of the coarse crushing assembly. It is assembled to drive the circular shaft to rotate by relying on the power of motor 2, so that the feeding belt transports the waste sand screened out by the screening assembly back to the coarse crushing assembly; the return material assembly includes an outer shell, which is fixed to the top of the material shell, and one side of the outer shell is penetrated by two circular shafts rotatably installed, and a single-groove pulley is fixed on the outer side of one end of the two circular shafts close to motor 2, and the other end of belt one is mounted on the inner side of the single-groove pulley close to the shell body, and the outer sides of the two circular shafts are mounted with a feeding belt, and the feeding belt is located on the inner side of the outer shell, and a bottom shell is fixed on the inner side of the material shell, and another belt one is mounted on the outer side of the other single-groove pulley.

[0015] Furthermore, a fine crushing component is arranged on the inner side of the unloading component, and is assembled to rely on the power of motor two to drive the main shaft to rotate, so that the pressure roller crushes the waste sand. The fine crushing component includes a partition, which is fixed to the side of the material shell away from the bottom shell, and two main shafts are rotatably installed through one side of the material shell, and pressure rollers are fixed to the outside of the two main shafts, and another double-groove pulley is fixed to the outside of one end of the main shaft close to the bottom shell close to motor one, and the other end of belt two is mounted in the groove of the other double-groove pulley close to the shell body, and the other end of the other belt one is mounted in the groove of the other double-groove pulley close to motor one.

[0016] The beneficial effects of the present invention are as follows:

[0017] (1) The multi-stage crushing waste sand crushing device described in the present invention adopts a feeding component, a screening component, a coarse crushing component, a return component and a fine crushing component. It can perform coarse and fine crushing on the waste sand and screen the products of the two crushings. Compared with the existing technology, it can optimize the particle grading of waste sand, ensure uniform particle size, improve the quality of waste sand, enable it to play a better role in many fields such as construction, casting, glass manufacturing, etc., expand the application range of waste sand, improve resource utilization, and achieve sustainable development. It can also reduce the company's raw material procurement costs, reduce equipment maintenance costs, and improve production efficiency. At the same time, the device can reduce the accumulation and landfill of waste sand, reduce the negative impact on the environment,

[0018] (2) The multi-stage waste sand crushing device described in the present invention adopts a feeding component and a screening component, which not only optimizes the power structure, but also can classify and process the waste sand with different results after two crushings, thereby improving the crushing effect.

[0019] (3) The multi-stage waste sand crushing device described in the present invention adopts a return component, which uses the power of the fine crushing component and the coarse crushing component to crush the unqualified waste sand again after coarse crushing, which not only reduces the pressure of the fine crushing component, but also improves the utilization rate of the waste sand and reduces the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 A schematic diagram of the overall structure of a multi-stage waste sand crushing device provided by the present invention;

[0022] Figure 2 A schematic cross-sectional view of the overall structure of a multi-stage waste sand crushing device provided by the present invention;

[0023] Figure 3 A schematic diagram of the three-dimensional structure of a return material assembly of a multi-stage crushing waste sand crushing device provided by the present invention;

[0024] Figure 4 for Figure 1 Enlarged view of point C;

[0025] Figure 5 A schematic diagram of the three-dimensional structure of a screening assembly of a multi-stage waste sand crushing device provided by the present invention;

[0026] Figure 6 A schematic cross-sectional view of a material shell of a multi-stage crushing waste sand crushing device provided by the present invention;

[0027] Figure 7 A schematic diagram of the three-dimensional structure of a material discharge assembly of a multi-stage waste sand crushing device provided by the present invention;

[0028] Figure 8 for Figure 6 A is an enlarged view;

[0029] Fig. 9 for Figure 6 B is an enlarged view;

[0030] Fig.10 A schematic diagram of the three-dimensional structure of a conical block of a multi-stage waste sand crushing device provided by the present invention.

[0031] In the figure: 1, base; 2, unloading assembly; 21, material shell; 22, motor 1; 23, cone block; 24, transmission rod; 25, fixed plate; 251, limiting rod; 26, screen plate; 27, connecting plate; 28, guide rod; 29, guide hole; 3, screening assembly; 31, screen shell; 32, rotating shaft; 33, gear; 34, meshing frame; 35, telescopic rod; 36, base; 37, screening plate; 371, left groove; 372, baffle; 373, panel; 374, movable shaft; 375, movable groove; 376, side groove; 377, through groove; 378, baffle; 3 79. Pull plate; 3791. Guide rod; 3792. Guide groove; 38. Limit shell; 4. Coarse crushing component; 41. Shell; 411. Bracket; 42. Motor 2; 43. Connecting shaft; 44. Support plate; 45. Closing plate; 46. Side plate; 47. Fixing plate; 48. Limit rod; 49. Double groove pulley; 491. Belt 1; 492. Belt 2; 5. Feed hopper; 6. Return material component; 61. Shell; 62. Round shaft; 63. Loading belt; 64. Bottom shell; 65. Single groove pulley; 7. Fine crushing component; 71. Partition; 72. Main shaft; 73. Press roller. DETAILED DESCRIPTION

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0033] Example: Figure 1-Figure 10 As shown, a multi-stage waste sand crushing device comprises a base 1;

[0034] Specifically, the coarse crushing component 4 is arranged on the top of the screening component 3, and is equipped to coarsely crush the waste sand by driving the connecting shaft 43 to rotate through the motor 2 42; the coarse crushing component 4 includes a shell 41, the shell 41 is fixed to the top of the screen shell 31, the top of the shell 41 is fixed with a feed hopper 5, one side of the shell 41 is fixed with a bracket 411, the motor 2 42 is fixed to the inner side of the bracket 411, and the motor 2 42 is located on the top of the motor 1 22, the inner wall of the shell 41 adjacent to the side where the bracket 411 is fixed is fixed with a support plate 44, the inner wall of the shell 41 adjacent to the side where the bracket 411 is fixed is fixed with a sealing plate 45, a connecting shaft 43 is fixed to the inner side of the sealing plate 45, and another connecting shaft 43 is placed on the inner side of the supporting plate 44. The output end of the motor 2 42 is fixedly connected to one end of the connecting shaft 43 on the inner side of the sealing plate 45, and side plates 46 are fixed at both ends of the other connecting shaft 43. The two side plates 46 are located on the outer side of the shell 41, and the two side plates 46 are fixed with limiting rods 48 on the side away from the motor 2 42. The outer side of each limiting rod 48 is slidably connected with a fixing plate 47, and the side of each fixing plate 47 close to the shell 41 is fixedly connected to the shell 41, and the fixing plate 47 and the side plate 46 on the same side of the shell 41 are connected by a spring, and the spring is located on the outer side of the limiting rod 48.

[0035] In this embodiment, the staff uses mechanical equipment (such as a transport vehicle or a conveyor belt, which belongs to the prior art and is not described here) to transport the waste sand to be crushed to the inner side of the feed hopper 5, and then installs the equipment for unloading (such as a container or a conveyor belt) to the inner side of the base 1, and then starts the motor 1 22 and the motor 2 42, and the output end of the motor drives the connecting shaft 43 to rotate forward, and the waste sand to be crushed is guided by the feed hopper 5 and moves to the inner side of the two connecting shafts 43, and the two connecting shafts 43 squeeze and crush the waste sand to perform preliminary rough crushing;

[0036] If waste sand is transported too fast and accumulates on the top of the two connecting shafts 43, the connecting shaft 43 fixedly connected to the second motor 42 squeezes the other connecting shaft 43 through the waste sand, and the other connecting shaft 43 moves along the inner side of the support plate 44 to the side away from the connecting shaft 43 fixedly connected to the second motor 42. The connecting shaft 43 squeezes the spring through the two side plates 46, and the two side plates 46 push the two limit rods 48 to move along the inner sides of the two side plates 46 away from the connecting shaft 43, thereby increasing the distance between the two connecting shafts 43. After dredging, the two springs push the two side plates 46, and the two side plates 46 drive the other connecting shaft 43 to move along the inner side of the support plate 44 toward the side of the connecting shaft 43 fixedly connected to the second motor 42, so that the two connecting shafts 43 return to their original positions, avoiding the coarse crushing component 4 from being blocked;

[0037] Specifically, the screening assembly 3 is arranged on the top of the material discharge assembly 2, and is equipped to change the vertical position of the base 36 by relying on the power of the motor 22. The base 36 drives the meshing plate to move in the vertical direction through the telescopic rod 35, so that the gear 33 drives the rotating shaft 32 to rotate, and the inclination angle of the screening plate 37 is changed to screen the waste sand; the screening assembly 3 includes a screen shell 31, which is fixed to the top of the material shell 21, and the rotating shaft 32 is rotatably installed through the screen shell 31 near the motor 2 2, a gear 33 is fixed to the outer side of one end of the rotating shaft 32 close to the motor 22, a limiting shell 38 is fixed to the side of the screen shell 31 close to the gear 33, a base 36 is fixed to the top of the connecting plate 27 close to the motor 22, two telescopic rods 35 are fixed to the top of the base 36 and penetrate through, an engagement frame 34 is fixed to the top of the output end of the two telescopic rods 35, the inner side of the engagement frame 34 is engaged with the gear 33, the engagement frame 34 is located on the inner side of the limiting shell 38, and the screening plate 37 is fixed to the outer side of the rotating shaft 32.

[0038] Specifically, a left groove 371 is provided at the top of the screening plate 37, a baffle 372 is rotatably mounted on the inner side of the left groove 371, a spring is fixed on the inner side of the baffle 372, an inlay plate 373 is fixed on the other end of the spring, a movable shaft 374 is rotatably mounted on the inner side of the other end of the inlay plate 373, a side groove 376 is provided on the inner wall of the sieve shell 31 adjacent to the side close to the gear 33, movable grooves 375 are respectively provided on the inner walls on both sides of the side groove 376, and both ends of the movable shaft 374 are located on the inner sides of the two movable grooves 375.

[0039] Specifically, a through slot 377 is provided at the top of the screening plate 37, and the through slot 377 is symmetrically arranged on the top of the screening plate 37 with the left side, a baffle 378 is rotatably installed on the inner side of the through slot 377, a spring is fixed to the other end of the baffle 378, a pull plate 379 is fixed to the other end of the spring, and the baffle 378 is located on the inner side of the pull plate 379, a guide rod 3791 is rotatably installed on the inner side of the other end of the pull plate 379, a guide slot 3792 is provided on the inner wall of the material shell 21 on one side close to the gear 33 and the inner wall on the side opposite to it, and both ends of the guide rod 3791 are located on the inner sides of the two guide slots 3792.

[0040] In this embodiment, after the waste sand after preliminary crushing falls to the top of the screening plate 37, the output end of the motor 22 drives the conical block 23 to rotate through the transmission rod 24. During the rotation of the conical block 23 by 180 degrees, the conical block 23 pushes the connecting plate 27 to move toward the top of the device, and the connecting plate 27 pushes the base plate to move toward the top of the device. The base plate pushes the meshing frame 34 to move toward the side close to the top of the device through the telescopic rod 35. The meshing frame 34 drives the rotating shaft 32 to rotate forward through the meshing action, and the rotating shaft 32 drives the screening plate 37 to rotate forward. The screening plate 37 drives the baffle plate 372 and the insert plate 373 to rotate inversely with the movable shaft 374 as the center, and releases the sealing of the left side of the screening plate 37. The screening plate 45 drives the pull plate 379 and the baffle plate 378 to rotate forward with the rotating shaft 32 as the center. The pull plate 379 drives the guide rod 3791 to move along the inner side of the guide groove 3792 toward the top of the device. The guide rod 3791 drives the pull plate 379 to move to the side away from the baffle plate 378. At this time, the spring inside the pull plate 379 is stretched, and the waste sand that is qualified for coarse crushing passes through the left side of the screening plate 37 and enters the fine crushing component 7.

[0041] During the process of the cone block 23 rotating from 180 to 360 degrees, the connecting plate 27 moves toward the bottom of the device, the connecting plate 27 pulls the base plate to move toward the bottom of the device, the base plate pulls the meshing frame 34 to move toward the bottom of the device through the telescopic rod 35, the meshing frame 34 drives the rotating shaft 32 to reverse through the meshing action, the rotating shaft 32 drives the screening plate 37 to reverse, the screening plate 37 drives the baffle 372 and the panel 373 to rotate forward with the movable shaft 374 as the center until the baffle 372 and the panel 373 return to their original positions, the pulling plate 379 and the baffle 378 rotate forward with the rotating shaft 32 as the center and return to their original positions, the pulling plate 379 drives the guide rod 3791 to return to its original position along the inner side of the guide groove 3792, thereby repeatedly allowing the rough crushing qualified to continuously enter the fine crushing component 7, and the waste sand that fails the rough crushing remains on the top of the screening plate 37;

[0042] When the coarse crushing of the waste sand is completed or there is too much unqualified waste sand on the top of the screening plate 37, the waste sand is stopped from being transported to the inside of the feed hopper 5. The staff controls the device to return to the initial position through the motor 1 22 and the motor 2 42, and then controls the two telescopic rods 35 to retract. The two telescopic rods 35 drive the meshing frame 34 to move toward the side close to the base 36. When the output ends of the two telescopic rods 35 retract to the limit, the telescopic rods 35 pull the meshing frame 34 to move toward the bottom of the device. The meshing frame 34 drives the rotating shaft 32 to reverse through the meshing action. The rotating shaft 32 drives the screening plate 37 to reverse. The screening plate 37 drives the baffle 372 and the panel 373 to reverse with the rotating shaft 32 as the center. The panel 373 drives the movable shaft 374 to move along the inner side of the movable groove 375 toward the top of the device. Finally, the movable shaft 374 is located at the top of the movable groove 375. When the guide rod 3791 moves to the top wall of the guide groove 3792, the spring inside the baffle plate 378 is stretched to the limit, and a through hole is formed between the baffle plate 378 and the pull plate 379. Then, the motor 1 22 and the motor 2 42 are started, and the screen plate 37 is restored to its initial state during the rotation of the conical block 23 by 180 degrees, thereby closing the through hole between the baffle plate 378 and the pull plate 379. The screen plate 37 is opened again during the rotation of the conical block 23 by 180 degrees to 360 degrees, and unqualified waste sand enters the inner side of the bottom shell 64 through the through hole and enters the return assembly 6, thereby completing the classification of the coarsely crushed waste sand.

[0043] Specifically, the material unloading component 2 is arranged on the top of the base 1, and is equipped to drive the conical block 23 to rotate through the motor 22, and the vertical position of the connecting plate 27 is changed by the shape of the conical block 23, and the connecting plate 27 changes the vertical position of the screen plate 26 through the guide rod 28 to shake the waste sand; the material unloading component 2 includes a material shell 21, the material shell 21 is fixed to the top of the base 1, the motor 22 is fixed to the top of the base 1, and the motor 22 is located on one side of the material shell 21, and a transmission rod 24 is rotatably installed through the side of the material shell 21 close to the motor, and the two ends of the transmission rod 24 are located outside the material shell 21, one end of the transmission rod 24 is fixedly connected to the output end of the motor 22, and the two conical blocks 23 are respectively fixed to the outside of the two ends of the transmission rod 24, and two guide holes 29 are respectively opened on both sides of the material shell 21, and the two guide holes 29 located on the same side of the transmission rod 24 Guide rods 28 are placed on the inside respectively, and a sieve plate 26 is fixed to the outside of the two guide rods 28, and the sieve plate 26 is located on the inside of the material shell 21, a connecting plate 27 is fixed to the outside of one end of the two guide rods 28 close to the motor 22, and another connecting plate 27 is fixed to the outside of the other end of the two guide rods 28, the two connecting plates 27 are both located on the outside of the material shell 21, and the tops of the two conical blocks 23 are respectively fitted with the bottoms of the two connecting plates 27, a group of fixed plates 25 is fixed on both sides of the material shell 21, and the two fixed plates 25 are a group, and the two groups of fixed plates 25 are respectively located on the tops of the two connecting plates 27, and two limiting rods 251 are fixed to the tops of the two connecting plates 27, and the four limiting rods 251 are all located on the inside of the four fixed plates 25, and a spring is fixed to the bottom of each fixed plate 25, and the other end of each spring is fixed to the top of the connecting plate 27, and the four springs are all located on the outsides of the four limiting rods 251.

[0044] In this embodiment, the motor drives the two conical blocks 23 to rotate 180 degrees through the transmission rod 24, and the two conical blocks 23 push the two connecting plates 27 to move toward the top of the device. The two connecting plates 27 squeeze the spring and drive the limiting rod 251 to move toward the top of the device along the inner side of the fixed plate 25. The two connecting plates 27 move toward the top of the device along the inner side of the guide hole 29 through the two guide rods 28 and drive the screen plate 26 to move toward the top of the device. During the process of the conical block 23 rotating from 180 to 360 degrees, , the spring squeezes the two connecting plates 27, and the two connecting plates 27 drive the limiting rod 251 to move along the inner side of the fixed plate 25 toward the bottom of the device, and the two connecting plates 27 move toward the bottom of the device along the inner side of the guide hole 29 through the two guide rods 28, while driving the screen plate 26 to move toward the bottom of the device; and then the screen plate 26 is shaken, so that the screen plate 26 screens the waste sand after fine crushing again, and the waste sand that fails fine crushing accumulates on the inner side of the screen plate 26, and the waste sand that passes fine crushing passes through the screen plate 26 and falls to the inner side of the unloading device on the inner side of the base 1.

[0045] Specifically, the return component 6 is arranged at the top of the unloading component 2 and is located on one side of the coarse crushing component 4. It is assembled to drive the round shaft 62 to rotate by relying on the power of the motor 2 42, so that the feeding belt 63 transports the waste sand screened out by the screening component 3 back to the coarse crushing component 4; the return component 6 includes an outer shell 61, the outer shell 61 is fixed to the top of the material shell 21, and one side of the outer shell 61 is penetrated by two round shafts 62 that are rotatably installed, and the outer sides of the two round shafts 62 close to the motor 2 42 are fixed with single-groove pulleys 65, and the other end of the belt 1 491 is mounted on the inner side of the single-groove pulley 65 close to the shell 41, and the outer sides of the two round shafts 62 are mounted with feeding belts 63, and the feeding belts 63 are located on the inner side of the outer shell 61, and the inner side of the material shell 21 is fixed with a bottom shell 64, and the outer side of the other single-groove pulley 65 is mounted with another belt 1 491.

[0046] In this embodiment, the motor 2 42 causes the double-groove pulley 49 to rotate in the same direction through the belt 2 492. The two double-groove pulleys 49 drive the two round shafts 62 to rotate forward through the two belts 1 491 and the two single-groove pulleys 65. The two round shafts 62 drive the feeding belt 63 to rotate forward, and the waste sand entering the inner side of the bottom shell 64 is transported to the bottom of the top wall of the outer shell 61. The unqualified waste sand is thrown to the inner side of the feed hopper 5 by inertia, and is roughly crushed again.

[0047] Specifically, the fine crushing component 7 is arranged on the inner side of the unloading component 2, and is equipped to rely on the power of the motor 2 42 to drive the main shaft 72 to rotate, so that the pressure roller 73 crushes the waste sand. The fine crushing component 7 includes a partition 71, and the partition 71 is fixed to the side of the material shell 21 away from the bottom shell 64. Two main shafts 72 are rotatably installed on one side of the material shell 21, and pressure rollers 73 are fixed to the outside of the two main shafts 72. Another double-groove pulley 49 is fixed to the outside of one end of the main shaft 72 close to the bottom shell 64 close to the motor 1 22, and the other end of the belt 2 492 is mounted in the groove of the other double-groove pulley 49 close to the shell 41, and the other end of the other belt 1 491 is mounted in the groove of the other double-groove pulley 49 close to the motor 1 22.

[0048] In this embodiment, after entering the fine crushing assembly 7, the motor 2 42 causes the double-groove pulley 49 to rotate in the same direction through the belt 2 492, so that the main shaft 72 drives the pressure roller 73 to finely crush the waste sand after the coarse crushing, and the finely crushed waste sand falls to the inner side of the screen plate 26.

[0049] Working principle: The initial state is as follows Figure 1-Figure 10 As shown, the staff uses mechanical equipment (such as a transport vehicle or a conveyor belt, which belongs to the prior art and is not described here) to transport the waste sand to be crushed to the inside of the feed hopper 5, and then installs the equipment for unloading (such as a container or a conveyor belt) to the inside of the base 1, and then starts the motor 1 22 and the motor 2 42, and the two connecting shafts 43 squeeze and crush the waste sand to perform preliminary rough crushing;

[0050] After the waste sand after preliminary crushing falls to the top of the screening plate 37, the output end of the motor 22 drives the cone block 23 to rotate through the transmission rod 24. During the process of the cone block 23 rotating 180 degrees, the rotating shaft 32 drives the screening plate 37 to rotate forward, and the screening plate 37 drives the baffle 372 and the panel 373 to rotate reversely with the movable shaft 374 as the center, thereby releasing the sealing of the left side of the screening plate 37. The waste sand that has passed the rough crushing passes through the left side of the screening plate 37 and enters the fine crushing component 7.

[0051] During the process of the cone block 23 rotating from 180 to 360 degrees, the connecting plate 27 moves toward the bottom of the device, and the screening plate 37 drives the baffle plate 372 and the panel 373 to rotate forward with the movable shaft 374 as the center until the baffle plate 372 and the panel 373 return to their original positions, and the pull plate 379 and the baffle plate 378 rotate forward with the rotating shaft 32 as the center to return to their original positions, and the pull plate 379 drives the guide rod 3791 to return to its original position along the inner side of the guide groove 3792, thereby repeatedly allowing the rough crushed qualified sand to continuously enter the fine crushing component 7, and the waste sand that fails the rough crushing remains on the top of the screening plate 37;

[0052] When the rough crushing of the waste sand is completed or there is too much unqualified waste sand on the top of the screening plate 37, the waste sand is stopped from being transported to the inside of the feed hopper 5. The staff controls the device to return to the initial position through the motor 1 22 and the motor 2 42, and then controls the two telescopic rods 35 to retract, so that a through hole is formed between the baffle plate 378 and the pull plate 379. Then, the motor 1 22 and the motor 2 42 are started, and the screening plate 37 returns to the initial state during the rotation of the conical block 23 by 180 degrees, thereby closing the through hole between the baffle plate 378 and the pull plate 379. The screening plate 37 returns to the initial state during the rotation of the conical block 23 by 180 degrees. During the 360-degree process, the through hole between the baffle plate 378 and the pull plate 379 is opened again, and unqualified waste sand enters the inner side of the bottom shell 64 through this through hole, and enters the return component 6; the motor 2 42 makes the double-groove pulley 49 rotate in the same direction through the belt 2 492, and the two double-groove pulleys 49 drive the two round shafts 62 to rotate forward through the two belts 1 491 and the two single-groove pulleys 65, and the two round shafts 62 drive the feeding belt 63 to rotate forward, and the waste sand entering the inner side of the bottom shell 64 is transported to the bottom of the top wall of the outer shell 61, and the unqualified waste sand is thrown to the inner side of the feed hopper 5 by inertia, and is roughly crushed again;

[0053] After entering the fine crushing component 7, the motor 2 42 makes the double-groove pulley 49 rotate in the same direction through the belt 2 492, so that the main shaft 72 drives the pressure roller 73 to finely crush the waste sand after coarse crushing. The finely crushed waste sand falls to the inner side of the screen plate 26. During the rotation of the two conical blocks 23 driven by the motor through the transmission rod 24, the screen plate 26 is shaken, so that the screen plate 26 screens the finely crushed waste sand again. The qualified waste sand passes through the screen plate 26 and falls to the inner side of the unloading equipment on the inner side of the base 1.

[0054] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-stage waste sand crushing device, comprising a base (1), characterized in that: It also includes a material discharge assembly (2), which is arranged on the top of the base (1) and is equipped to drive the cone block (23) to rotate through a motor (22), and change the vertical position of the connecting plate (27) by the shape of the cone block (23), and the connecting plate (27) changes the vertical position of the screen plate (26) through a guide rod (28) to shake the waste sand; The screening assembly (3) is arranged on the top of the material discharging assembly (2), and is equipped to change the vertical position of the base (36) by relying on the power of the motor (22). The base (36) drives the meshing plate to move in the vertical direction through the telescopic rod (35), so that the gear (33) drives the rotating shaft (32) to rotate, and the inclination angle of the screening plate (37) is changed to screen the waste sand; A coarse crushing assembly (4) is arranged on the top of the screening assembly (3) and is configured to coarsely crush the waste sand by driving the connecting shaft (43) to rotate via the second motor (42); The return assembly (6) is arranged on the top of the unloading assembly (2) and located on one side of the coarse crushing assembly (4), and is configured to drive the circular shaft (62) to rotate by the power of the second motor (42), so that the feeding belt (63) transports the waste sand screened by the screening assembly (3) back to the coarse crushing assembly (4); The fine crushing assembly (7) is arranged inside the material discharge assembly (2), and is configured to drive the main shaft (72) to rotate by the power of the second motor (42), so that the pressure roller (73) finely crushes the waste sand.

2. The multi-stage crushing waste sand crushing device according to claim 1, characterized in that: The material unloading assembly (2) comprises a material shell (21), the material shell (21) is fixed to the top of the base (1), a motor (22) is fixed to the top of the base (1), and the motor (22) is located on one side of the material shell (21), a transmission rod (24) is rotatably mounted through one side of the material shell (21) close to the motor, and two ends of the transmission rod (24) are located outside the material shell (21), one end of the transmission rod (24) is fixedly connected to the output end of the motor (22), two conical blocks (23) are respectively fixed to the outside of the two ends of the transmission rod (24), two guide holes (29) are respectively penetrated on both sides of the material shell (21), guide rods (28) are respectively placed inside the two guide holes (29) located on the same side of the transmission rod (24), and screen plates (26) are fixed to the outside of the two guide rods (28), and the screen plates (26) are located inside the material shell (21). A connecting plate (27) is fixed to the outer side of one end of the two guide rods (28) close to the motor (22), another connecting plate (27) is fixed to the outer side of the other end of the two guide rods (28), the two connecting plates (27) are both located outside the material shell (21), and the tops of the two conical blocks (23) are respectively fitted with the bottoms of the two connecting plates (27), a group of fixed plates (25) is fixed to both sides of the material shell (21), and the two fixed plates (25) form a group, the two groups of fixed plates (25) are respectively located on the tops of the two connecting plates (27), two limiting rods (251) are fixed to the tops of the two connecting plates (27), the four limiting rods (251) are all located inside the four fixed plates (25), a spring is fixed to the bottom of each fixed plate (25), the other end of each spring is fixed to the top of the connecting plate (27), and the four springs are all located outside the four limiting rods (251).

3. The multi-stage waste sand crushing device according to claim 2, characterized in that: The screening assembly (3) comprises a screen shell (31), the screen shell (31) is fixed to the top of the material shell (21), a rotating shaft (32) is rotatably installed through the side of the screen shell (31) close to the motor (22), a gear (33) is fixed to the outer side of one end of the rotating shaft (32) close to the motor (22), a limiting shell (38) is fixed to the side of the screen shell (31) close to the gear (33), a base (36) is fixed to the top of the connecting plate (27) close to the motor (22), two telescopic rods (35) are fixed to the top of the base (36) and pass through, a meshing frame (34) is fixed to the top of the output ends of the two telescopic rods (35), the inner side of the meshing frame (34) is meshed with the gear (33), the meshing frame (34) is located on the inner side of the limiting shell (38), and the screening plate (37) is fixed to the outer side of the rotating shaft (32).

4. The multi-stage waste sand crushing device according to claim 3, characterized in that: The top of the sieve plate (37) is provided with a left groove (371), a baffle (372) is rotatably mounted inside the left groove (371), a spring is fixed inside the baffle (372), an insert plate (373) is fixed to the other end of the spring, a movable shaft (374) is rotatably mounted inside the other end of the insert plate (373), a side groove (376) is provided on the inner wall of the sieve shell (31) adjacent to the side close to the gear (33), movable grooves (375) are respectively provided on the inner walls on both sides of the side groove (376), and two ends of the movable shaft (374) are located inside the two movable grooves (375).

5. The multi-stage waste sand crushing device according to claim 4, characterized in that: The top of the screening plate (37) is provided with a through slot (377), and the through slot (377) is symmetrically arranged on the top of the screening plate (37) with the left side, a baffle (378) is rotatably mounted on the inner side of the through slot (377), a spring is fixed to the other end of the baffle (378), a pull plate (379) is fixed to the other end of the spring, and the baffle (378) is located on the inner side of the pull plate (379), a guide rod (3791) is rotatably mounted on the inner side of the other end of the pull plate (379), and a guide slot (3792) is provided on the inner wall of the material shell (21) on one side close to the gear (33) and on the inner wall on the side opposite to the gear (33), and both ends of the guide rod (3791) are located on the inner sides of the two guide slots (3792).

6. The multi-stage waste sand crushing device according to claim 3, characterized in that: The coarse crushing assembly (4) comprises a shell (41), the shell (41) is fixed to the top of the sieve shell (31), a feed hopper (5) is fixed to the top of the shell (41), a bracket (411) is fixed to one side of the shell (41), a second motor (42) is fixed to the inner side of the bracket (411), and the second motor (42) is located on the top of the first motor (22), a support plate (44) is fixed to the inner wall of one side of the shell (41) adjacent to the side where the bracket (411) is fixed, a sealing plate (45) is fixed to the inner wall of the other side of the shell (41) adjacent to the side where the bracket (411) is fixed, a connecting shaft (43) is fixed to the inner side of the sealing plate (45), and another connecting shaft (43) is placed on the inner wall of the shell (41) adjacent to the side where the bracket (411) is fixed. On the inner side of the support plate (44), the output end of the second motor (42) is fixedly connected to one end of the connecting shaft (43) on the inner side of the sealing plate (45), and the two ends of the other connecting shaft (43) are respectively fixed with side plates (46), the two side plates (46) are located on the outer side of the shell (41), and the sides of the two side plates (46) away from the second motor (42) are fixed with limit rods (48), and the outer side of each limit rod (48) is slidably connected with a fixed plate (47), and the side of each fixed plate (47) close to the shell (41) is fixedly connected to the shell (41), and the fixed plate (47) and the side plate (46) located on the same side of the shell (41) are connected by a spring, and the spring is located on the outer side of the limit rod (48).

7. The multi-stage waste sand crushing device according to claim 6, characterized in that: A double groove pulley (49) is fixed on the outer side of the output end of the second motor (42), a second belt (492) is sleeved in the groove of the double groove pulley (49) close to the housing (41), and a first belt (491) is sleeved in the groove of the double groove pulley (49) close to the second motor (42).

8. The multi-stage waste sand crushing device according to claim 6, characterized in that: The return material assembly (6) comprises an outer shell (61), which is fixed to the top of the material shell (21). Two round shafts (62) are rotatably installed on one side of the outer shell (61). A single groove pulley (65) is fixed to the outer side of one end of the two round shafts (62) close to the motor 2 (42), and the other end of the belt 1 (491) is sleeved on the inner side of the single groove pulley (65) close to the shell (41). A feeding belt (63) is sleeved on the outer side of the two round shafts (62), and the feeding belt (63) is located on the inner side of the outer shell (61). A bottom shell (64) is fixed to the inner side of the material shell (21), and another belt 1 (491) is sleeved on the outer side of another single groove pulley (65).

9. The multi-stage crushing device for waste sand according to claim 7, characterized in that: The crushing assembly (7) comprises a partition (71), the partition (71) being fixed to a side of the material shell (21) away from the bottom shell (64), two main shafts (72) being rotatably mounted through one side of the material shell (21), pressure rollers (73) being fixed to the outer sides of the two main shafts (72), another double-groove pulley (49) being fixed to the outer side of one end of the main shaft (72) close to the bottom shell (64) close to the motor one (22), and the other end of the second belt (492) being mounted in a groove of the other double-groove pulley (49) close to the housing (41), and the other end of the other belt one (491) being mounted in a groove of the other double-groove pulley (49) close to the motor one (22).

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