Multi-stage crushing sand making machine

Abstract

The utility model relates to the technical field of crushing sand making machinery, and discloses a multi-stage crushing sand making machine which comprises a shell, conveying devices are fixedly installed on the left side and the middle of the inner bottom wall of the shell, and two servo motors are fixedly connected to the front side of the shell. The output end of the servo motor penetrates through the front side of the shell and is fixedly connected with a crushing hammer, crushing plates are fixedly connected to the rear side of the inner wall of the shell and the front side of the top conveying equipment, and a supporting frame is fixedly connected to the front side of the top wall of the top conveying equipment; vibration motors are fixedly connected to the front side and the rear side of the top wall of the supporting frame. According to the crushing device, the crushing hammers at the top are matched with the fixed crushing plates in a rotating mode to conduct primary crushing and conveying, then secondary crushing is conducted, finally, fine crushing is conducted through the crushing rollers to achieve step-by-step crushing of materials, the situation that the crushing efficiency of the crushing device is reduced is avoided, and therefore the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of crushing and sand making machinery technology, and in particular to a multi-stage crushing and sand making machine. Background Technology

[0002] Crushing and sand making machinery is a type of equipment used for processing ores and building materials. It is mainly used to crush large materials into smaller particles, thereby producing fine materials such as sand and gravel. Its main equipment includes crushers, sand making machines, and screening machines. It is widely used in the construction, metallurgy, mining, and chemical industries. The crusher crushes materials through mechanical force, and uses squeezing, impact, and shearing to make the materials reach the required particle size. The sand making machine throws the materials at high speed through a high-speed rotating rotor, causing collisions and friction between the materials, thereby achieving the effect of sand making.

[0003] A search revealed Chinese Patent Publication No. CN216419563U, which discloses a sand making and crushing machine, relating to the field of sand making technology. This sand making and crushing machine includes a mechanical frame, on which a crushing box is fixedly connected via a fixing bracket. The crushing box contains crushing rollers for crushing sand and gravel. Sand and gravel are placed into the crushing box and crushed by the crushing rollers. The crushed sand and gravel fall into the screening box and onto a filter plate. Qualified sand and gravel pass through the filter plate and are discharged from the outlet, while unqualified sand and gravel roll along the filter plate. The oscillating drive device drives the filter plate to oscillate, which not only makes it easier to screen sand and gravel, but also pushes the screening box to move left and right through contact with the discharge chute, further facilitating the screening of sand and gravel and effectively improving screening efficiency and effect, while avoiding clogging of the screening box. However, in actual use, this device uses a single crushing roller to crush sand and gravel, which results in low crushing efficiency, affecting work efficiency and increasing energy consumption. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a multi-stage crushing and sand making machine, which aims to improve the work of crushing sand and gravel by a single crushing roller. However, this results in low crushing efficiency and increased energy consumption of the equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a multi-stage crushing and sand making machine, comprising a shell, conveying devices fixedly installed on the left side and middle of the inner bottom wall of the shell, two servo motors fixedly connected to the front side of the shell, the output end of the servo motors passing through the front side of the shell and fixedly connected to a crushing hammer, crushing plates fixedly connected to the rear side of the inner wall of the shell and the front side of the top conveying device, a support frame fixedly connected to the front side of the top wall of the top conveying device, a vibrating motor fixedly connected to the front and rear sides of the top wall of the support frame, a rotating column rotatably connected to the bottom wall of the top crushing plate, a screen fixedly connected to the front side of the rotating column, two crushing rollers rotatably connected to the bottom of the inner wall of the shell, a stepper motor fixedly connected to the bottom of the front side of the inner wall of the shell, the output end of the stepper motor fixedly connected to the front end of the right crushing roller, a gear fixedly connected to the left end of the outer wall of the crushing roller, the two gears meshing together, a feed shell connected to the top wall of the shell, a collection pipe connected to the right side of the shell, and a cleaning mechanism provided at the bottom of the front side of the shell.

[0006] The above technical solution allows materials to undergo initial crushing via the rotation of the top breaker hammer and the fixed crushing plate. Simultaneously, the material is first screened, and materials meeting the particle size requirements are directly conveyed through the lower conveyor. Materials not meeting the requirements are crushed by the breaker hammer. The conveyed material undergoes secondary crushing via the middle breaker hammer, and then further crushed by two crushing rollers before being collected through a collection pipe. This multi-stage crushing process improves work efficiency and avoids a decrease in equipment crushing efficiency.

[0007] As a further description of the above technical solution:

[0008] The cleaning mechanism includes a blower, the bottom wall of which is fixedly connected to the bottom of the front inner wall of the housing. Both the left and right ends of the front side of the blower are connected to a conveying pipe. One end of the conveying pipe is connected to a multi-hole nozzle. The left sides of the two multi-hole nozzles are respectively fixedly connected to the left side of the inner wall of the corresponding conveying device. The right sides of the inner bottom walls of the two conveying devices are fixedly connected to a fixing shell. Multiple return springs are fixedly connected at equal intervals to the inner bottom walls of the fixing shells. A cleaning scraper is fixedly connected to the top of the return spring.

[0009] The above technical solution allows the air drawn in by the blower to be output through a multi-hole nozzle, so that the high-pressure jet airflow can blow off the residual dust particles on the top of the conveyor equipment. Then, as the conveyor belt rotates inside the conveyor equipment, the cleaning scraper fixed at the bottom can further clean and scrape the rotating conveyor belt. The elasticity of the return spring improves the cleaning effect of the cleaning scraper and reduces the energy consumption of the conveyor equipment.

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

[0011] The cleaning mechanism also includes two rubber rings, the inner walls of which are respectively fixedly installed on one end of the outer wall of the corresponding delivery pipe, and the outer walls of the rubber rings are fixedly connected to the front side of the outer shell.

[0012] The above technical solution improves the protection effect at the connection of the delivery pipe.

[0013] As a further description of the above technical solution:

[0014] A control switch is fixedly connected to the rear side of the housing. The control switch is electrically connected to the conveying equipment, servo motor, vibration motor, stepper motor and blower respectively.

[0015] The above technical solution enables the control switch to turn the equipment inside the device on and off.

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

[0017] Multiple rubber pads are fixedly connected at equal intervals inside the two conveying devices, and rubber ring belts are fixedly connected to the left and right sides inside the two conveying devices.

[0018] The above technical solutions improve the anti-slip effect of rubber pads and rubber belts during material conveying.

[0019] As a further description of the above technical solution:

[0020] A movable door is rotatably connected to the right middle part of the outer casing via a hinge, and a handle is fixedly connected to the top of the movable door.

[0021] The above technical solution allows for easy opening of the movable door by pulling the handle, enabling inspection of the crushing roller's operation.

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

[0023] A movable shell is fixedly installed on the top right side of the outer shell, and the top of the movable shell is provided with a slope.

[0024] The above technical solution makes it easy to open the top of the outer shell by opening the movable shell.

[0025] As a further description of the above technical solution:

[0026] Two support seats are fixedly connected to the front and rear sides of the outer shell, and support columns are fixedly connected inside the multiple support seats.

[0027] The above technical solution improves the stability of the device during operation.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the material is fed into the feed shell, and is initially crushed and conveyed by the rotation of the top crushing hammer in conjunction with the fixed crushing plate. At the same time, the material is screened by a screen, and the material that meets the particle size requirements is directly conveyed by the conveying equipment below for secondary crushing. Finally, it is finely crushed by the crushing roller, and then extracted and collected by the collection pipe. This achieves step-by-step crushing of the material, avoids the situation of reduced crushing efficiency of the equipment, and thus improves work efficiency.

[0030] 2. In this utility model, by drawing in outside air, the conveyed air through the conveying pipe is output through two multi-hole nozzles. The high-pressure jet of air can blow off the dust particles remaining on the conveying equipment. Furthermore, as the conveyor belt rotates, the cleaning scraper fixed at the bottom can further clean the rotating conveyor belt, thereby reducing the energy consumption of the conveying equipment. Attached Figure Description

[0031] Figure 1 This is a perspective view of a multi-stage crushing and sand making machine proposed in this utility model;

[0032] Figure 2 This is a rear view of a multi-stage crushing and sand making machine proposed in this utility model;

[0033] Figure 3 This is a cross-sectional view of the outer shell of a multi-stage crushing and sand making machine proposed in this utility model;

[0034] Figure 4 This is a schematic diagram of the structure of the breaker hammer of a multi-stage crushing and sand making machine proposed in this utility model;

[0035] Figure 5 This is a schematic diagram of the cleaning mechanism of a multi-stage crushing and sand making machine proposed in this utility model.

[0036] Legend:

[0037] 1. Outer shell; 2. Cleaning mechanism; 201. Blower; 202. Conveying pipe; 203. Multi-hole nozzle; 204. Fixed shell; 205. Return spring; 206. Cleaning scraper; 207. Rubber ring; 3. Conveying equipment; 4. Servo motor; 5. Breaker hammer; 6. Crushing plate; 7. Support frame; 8. Vibrating motor; 9. Rotating column; 10. Screen; 11. Rubber pad; 12. Rubber ring belt; 13. Stepper motor; 14. Crushing roller; 15. Gear; 16. Movable shell; 17. Movable door; 18. Handle; 19. Support base; 20. Support column; 21. Feed shell; 22. Control switch; 23. Collection pipe. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Reference Figure 1 , Figure 3 and Figure 4This utility model provides an embodiment of a multi-stage crushing and sand making machine, including a shell 1. Conveying devices 3 are fixedly installed on the left and middle sides of the inner bottom wall of the shell 1, facilitating material conveying. Two servo motors 4 are fixedly connected to the front side of the shell 1. The output ends of the servo motors 4 pass through the front side of the shell 1 and are fixedly connected to crushing hammers 5. Crushing plates 6 are fixedly connected to the rear side of the inner wall of the shell 1 and the front side of the top conveying device 3. The two crushing hammers 5 can rotate under the drive of the servo motors 4 to crush the material in conjunction with the crushing plates 6. A support frame 7 is fixedly connected to the front side of the top wall of the top conveying device 3. Vibrating motors 8 are fixedly connected to the front and rear sides of the top wall of the support frame 7. A rotating column 9 is rotatably connected to the bottom wall of the top crushing plate 6. A screen 10 is fixedly connected to the front side of the rotating column 9. The vibrating motor 9 is located below the screen 10. When material enters, it first passes through the screen 10. The material is screened, and the material that meets the particle size requirements falls directly through the screen 10 into the conveyor 3 below. It is then conveyed to the middle of the device for secondary crushing, while the material that does not meet the requirements remains above the screen 10 and is further crushed by the crushing hammer 5 and crushing plate 6. This improves the crushing efficiency and reduces unnecessary energy consumption. Two crushing rollers 14 are rotatably connected to the bottom of the inner wall of the outer shell 1. A stepper motor 13 is fixedly connected to the bottom of the front side of the inner wall of the outer shell 1. The output end of the stepper motor 13 is fixedly connected to the front end of the right crushing roller 14. A gear 15 is fixedly connected to the left end of the outer wall of the crushing roller 14. The two gears 15 mesh with each other. Under the meshing connection of the gears 15, the two crushing rollers 14 can complete the fine crushing of the material. The top wall of the outer shell 1 is connected to the feed shell 21, and the right side of the outer shell 1 is connected to the collection pipe 23. The crushed material can be collected through the collection pipe 23. A cleaning mechanism 2 is provided at the bottom of the front side of the outer shell 1.

[0040] Specifically, the material first enters the device through the feed shell 21, and then undergoes preliminary screening by passing through the screen 10. The screen 10 can effectively distinguish between materials that meet the particle size requirements and materials to be crushed. Materials that meet the particle size requirements fall directly into the conveyor 3 located at the top. For materials that do not pass through the screen 10, the crushing hammer 5 at the top rotates at high speed under the drive of the servo motor 4, and crushes them against the fixed crushing plate 6. The vibrating motor 8 further enhances the crushing effect. Through continuous vibration, the material at the top of the screen 10 is more fully crushed. The material after preliminary crushing is then further crushed. The conveyor 3 transports the material to the central processing area, where it undergoes secondary crushing via another set of crushing hammers 5 and crushing plates 6. The particle size of the material is further reduced after secondary crushing. The stepper motor 13 controls the synchronous rotation of the two crushing rollers 14, and the gears 15 mesh tightly to ensure the stability and efficiency of the crushing process. The crushing rollers 14 allow the material to reach the required particle size while being squeezed and sheared. The crushed material is collected through the collection pipe 23, enabling the device to achieve step-by-step crushing and efficient collection of materials, effectively avoiding a decrease in the crushing efficiency of the equipment and improving the overall working efficiency.

[0041] Reference Figure 1 , Figure 2 and Figure 5 The cleaning mechanism 2 includes a blower 201. The bottom wall of the blower 201 is fixedly connected to the bottom of the front inner wall of the outer casing 1. The left and right ends of the front side of the blower 201 are connected to conveying pipes 202, so that the conveying pipes 202 can convey the extracted airflow. One end of the conveying pipe 202 is connected to a multi-hole nozzle 203. The left side of the two multi-hole nozzles 203 are respectively fixedly connected to the left side of the inner wall of the corresponding conveying device 3, so that the conveyed airflow is sprayed out through the multiple multi-hole nozzles 203, and the airflow can blow off the material particles inside the conveyor belt of the conveying device 3. The right side of the inner bottom wall of the two conveying devices 3 are fixedly connected to a fixed shell 204. The inner bottom wall of the fixed shell 204 is fixedly connected to multiple return springs 205 at equal intervals. The top of the return spring 205 is fixedly connected to a cleaning scraper 206, so that the rotating conveyor belt can be cleaned by the cleaning scraper 206, thereby improving the cleanliness of the conveyor belt inside the conveying device 3 and reducing the energy consumption of the conveying device 3 during operation.

[0042] Specifically, when the blower 201 is started, one end draws in the surrounding air and conveys it through the conveying pipe 202. The airflow is then directed to two multi-hole nozzles 203, which use high-pressure jet technology to spray the airflow directly onto the residual material particles on the top wall of the conveyor belt inside the conveyor equipment 3. Under the impact of the airflow, the material particles are blown off, thereby improving the material collection effect. As the conveyor belt continues to rotate, the cleaning scraper 206 installed at its bottom can closely adhere to the surface of the conveyor belt through the return spring 205. Under the continuous scraping of the scraper, the tiny material particles remaining on the conveyor belt are further removed, ensuring the thorough cleaning of the conveyor belt.

[0043] Reference Figure 2 , Figure 4 and Figure 5 The cleaning mechanism 2 also includes two rubber rings 207. The inner walls of the two rubber rings 207 are respectively fixedly installed on one end of the outer wall of the corresponding conveying pipe 202. The outer walls of the rubber rings 207 are fixedly connected to the front side of the outer shell 1. A control switch 22 is fixedly connected to the rear side of the outer shell 1. The control switch 22 is electrically connected to the conveying device 3, the servo motor 4, the vibration motor 8, the stepper motor 13 and the blower 201 respectively. Multiple rubber pads 11 are fixedly connected at equal intervals inside the two conveying devices 3. Rubber ring belts 12 are fixedly connected to the left and right sides inside the two conveying devices 3.

[0044] Specifically, the rubber ring 207 can protect one end of the connection of the conveying pipe 202, thereby reducing the wear at the connection between the conveying pipe 202 and the outer shell 1. The control switch 22, which is electrically connected to the conveying equipment 3, the servo motor 4, the vibration motor 8, the stepper motor 13 and the blower 201 respectively, can turn the device on and off. The rubber pad 11 and the rubber ring belt 12 improve the anti-slip effect during material conveying.

[0045] Reference Figure 1 The right side of the outer shell 1 is connected to a movable door 17 via a hinge, and a handle 18 is fixedly connected to the top of the movable door 17; a movable shell 16 is fixedly installed on the top right side of the outer shell 1, and a slope is provided on the top of the movable shell 16; two support seats 19 are fixedly connected to the front and rear sides of the outer shell 1, and support columns 20 are fixedly connected inside the multiple support seats 19.

[0046] Specifically, by pulling the handle 18, the movable door 17 can be opened, making it easier to check the working condition of the crushing roller 14. By disassembling the movable shell 16, it is easier to carry out maintenance and inspection of the inside of the device. The support base 19 and support column 20 improve the stability of the device during operation.

[0047] Working principle: Upon initial use, material is fed through the feed shell 21 and screened by the screen 10. Material meeting the particle size requirements falls directly into the top conveyor 3 for transport. Material not meeting the requirements remains above the screen 10 and undergoes initial crushing via the rotation of the top crushing hammer 6 and the fixed crushing plate 6. Vibration by the vibrating motor 8 allows the material at the top of the screen 10 to continue undergoing initial crushing via the top crushing hammer 5. The initially crushed material is then conveyed by the top conveyor 3 to the middle crushing plate 6 for secondary crushing by the middle crushing hammer 5. Finally, a stepper motor 13 drives two crushing rollers 14, connected by gears 15, to perform fine crushing. The crushed material is then transported through… The material is collected through the collection pipe 23, achieving step-by-step crushing and avoiding a decrease in equipment crushing efficiency, thereby improving work efficiency. By starting the blower 201, the airflow drawn by the blower 201 is conveyed through the conveying pipe 202 and sprayed at high pressure through two multi-hole nozzles 203. The high-pressure airflow can blow off the material particles remaining on the top wall of the conveyor belt inside the conveyor equipment 3, improving the material collection effect. Furthermore, as the conveyor belt rotates, the cleaning scraper 206 fixed at the bottom by the return spring can further clean and scrape the rotating conveyor belt, thus ensuring the material collection effect and reducing the increase in energy consumption caused by residual material particles during the use of the conveyor equipment 3.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-stage crushing and sand making machine, comprising a shell (1), characterized in that: Conveying devices (3) are fixedly installed on the left and middle sides of the inner bottom wall of the outer shell (1). Two servo motors (4) are fixedly connected to the front side of the outer shell (1). The output end of the servo motor (4) passes through the front side of the outer shell (1) and is fixedly connected to a breaker hammer (5). A crushing plate (6) is fixedly connected to the rear side of the inner wall of the outer shell (1) and the front side of the top conveying device (3). A support frame (7) is fixedly connected to the front side of the top wall of the top conveying device (3). A vibration motor (8) is fixedly connected to the front and rear sides of the top wall of the support frame (7). A rotating column (9) is rotatably connected to the bottom wall of the top crushing plate (6). A screen (10) is fixedly connected to the front side of the rotating column (9). Two crushing rollers (14) are rotatably connected to the bottom of the inner wall of the outer shell (1). A stepper motor (13) is fixedly connected to the bottom of the front side of the inner wall of the outer shell (1). The output end of the stepper motor (13) is fixedly connected to the front end of the crushing roller (14) on the right side. A gear (15) is fixedly connected to the left end of the outer wall of the crushing roller (14). The two gears (15) are meshed together. The top wall of the outer shell (1) is connected to the feed shell (21). The right side of the outer shell (1) is connected to the collection pipe (23). A cleaning mechanism (2) is provided at the bottom of the front side of the outer shell (1).

2. The multi-stage crushing and sand making machine according to claim 1, characterized in that: The cleaning mechanism (2) includes a blower (201). The bottom wall of the blower (201) is fixedly connected to the bottom of the front inner wall of the outer shell (1). The left and right ends of the front side of the blower (201) are connected to a conveying pipe (202). One end of the conveying pipe (202) is connected to a multi-hole nozzle (203). The left sides of the two multi-hole nozzles (203) are respectively fixedly connected to the left side of the inner wall of the corresponding conveying device (3). The right sides of the inner bottom walls of the two conveying devices (3) are fixedly connected to a fixed shell (204). The inner bottom wall of the fixed shell (204) is fixedly connected to multiple return springs (205) at equal intervals. The top of the return spring (205) is fixedly connected to a cleaning scraper (206).

3. A multi-stage crushing and sand making machine according to claim 2, characterized in that: The cleaning mechanism (2) also includes two rubber rings (207), the inner walls of the two rubber rings (207) are respectively fixedly installed on one end of the outer wall of the corresponding delivery pipe (202), and the outer walls of the rubber rings (207) are fixedly connected to the front side of the outer shell (1).

4. A multi-stage crushing and sand making machine according to claim 2, characterized in that: A control switch (22) is fixedly connected to the rear side of the housing (1). The control switch (22) is electrically connected to the conveying equipment (3), the servo motor (4), the vibration motor (8), the stepper motor (13), and the blower (201).

5. A multi-stage crushing and sand making machine according to claim 1, characterized in that: Multiple rubber pads (11) are fixedly connected at equal intervals inside the two conveying devices (3), and rubber ring belts (12) are fixedly connected to the left and right sides inside the two conveying devices (3).

6. A multi-stage crushing and sand making machine according to claim 1, characterized in that: The right side of the outer casing (1) is connected to a movable door (17) via a hinge, and a handle (18) is fixedly connected to the top of the movable door (17).

7. A multi-stage crushing and sand making machine according to claim 1, characterized in that: A movable shell (16) is fixedly installed on the top right side of the outer shell (1), and the top of the movable shell (16) is provided with a slope.

8. A multi-stage crushing and sand making machine according to claim 1, characterized in that: Two support seats (19) are fixedly connected to the front and rear sides of the outer shell (1), and support columns (20) are fixedly connected inside the multiple support seats (19).

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