Mixture crushing device for glass fiber reinforced plastic material production

Abstract

The utility model discloses a mixture crushing device for glass fiber reinforced plastic material production, which relates to the field of glass fiber reinforced plastic material production and comprises a rack, and a crushing box is mounted at the top of the rack. By arranging the plugging assembly, when the driving shaft rotates, the driving shaft drives a driving bevel gear to rotate, then drives a driven bevel gear to rotate and then drives a connecting shaft to rotate, the connecting shaft drives a second driving belt wheel to rotate, then drives a second driven belt wheel to rotate through a second belt, and then drives a rotating shaft to rotate; the rotating disc drives the pull rod to move and then drives the blocking plate to move, and the blocking plate can move in a reciprocating mode along with continuous rotation of the rotating disc, so that the blocking plate blocks the feeding hopper in an intermittent mode, mixed materials can be discharged in an intermittent mode, and blocking caused by the fact that a large number of mixed materials enter the smashing box at the same time is avoided; and meanwhile, when the feeding hopper is blocked by the blocking plate, waste generated in the crushing process can be prevented from being splashed out of the feeding hopper.

Description

Technical Field

[0001] The utility model relates to the field of glass fiber reinforced plastic material production, in particular to a mixed material crushing device used for glass fiber reinforced plastic material production. Background Art

[0002] FRP is what we call fiber reinforced plastics. It is a composite material with various resins as the matrix. Glass is drawn into very fine fiber filaments, which are woven into products. It is widely used in the fields of construction, automobiles, communications, etc. According to the material properties of FRP, the main manufacturing processes commonly used are winding, drawing, compression molding, and hand lay-up molding. In the process of FRP material production, the mixture needs to be crushed, so the mixture needs to be added into the crushing device and crushed by the crushing roller.

[0003] According to a Chinese patent with publication number CN217196408U, a mixed material crushing device for glass fiber reinforced plastic material production is disclosed. The utility model intercepts the crushed material inside the shell by setting a protective plate. When feeding, the material pushes the protective plate into the shell for processing, preventing the crushed material inside from flying out and injuring people, thereby effectively protecting the operator.

[0004] Regarding the above-mentioned disclosed patent content, since a protective plate is provided to block the crushed material and prevent the material from splashing, and the protective plate needs to be rotated when adding material so that the protective plate no longer blocks the feed port before the material can be added to the crushing box, a large amount of material will be poured into the crushing box through the feed port each time. If too much material is poured, the material will accumulate at the feed port position above the crushing roller, which may cause the feed port to be blocked, making it difficult for subsequent materials to fall smoothly onto the crushing roller for crushing, which requires staff to clear the blockage, which is troublesome and affects the feeding efficiency of the material. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a mixed material crushing device for the production of glass fiber reinforced plastic materials, so as to solve the technical problem that a large amount of materials may cause blockage of the material port when entering the crushing roller at the same time.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mixed material crushing device for the production of glass fiber reinforced plastic materials, comprising a frame, a crushing box is installed on the top of the frame, a feed hopper is installed on the top of the crushing box, a sealing assembly is provided on one side of the top of the crushing box, and the sealing assembly includes an active bevel gear, a mounting plate arranged on one side of the outer surface of the crushing box, a sealing plate arranged inside the feed hopper, and a rotating shaft arranged on one side of the top of the crushing box through a bearing, a second driven pulley is sleeved on the outer wall of the rotating shaft, a turntable is installed on the top of the rotating shaft, and a pull rod is movably connected between the rotating shaft and the sealing plate, a connecting shaft is connected on the mounting plate through a bearing, a second active pulley is installed on the top of the connecting shaft, and a driven bevel gear is installed on the bottom end of the connecting shaft, a second belt is sleeved between the second active pulley and the second driven pulley, and a filter assembly is provided inside the crushing box.

[0007] By adopting the above technical solution, when the driving shaft rotates, it will drive the active bevel gear to rotate, then drive the driven bevel gear to rotate, and then drive the connecting shaft to rotate, and the connecting shaft will drive the second active pulley to rotate.

[0008] Furthermore, the filtering assembly includes a first driving pulley, a rotating shaft and a movable shaft arranged inside the crushing box through bearings, a threaded rod threadedly connected to the crushing box, a discharge port opened on one side of the crushing box, and a filter screen and a discharge plate installed inside the crushing box, a scraper is installed at the bottom of the rotating shaft, one end of the rotating shaft extends to the outside of the crushing box and is connected to a first driven pulley, and a first belt is sleeved between the first driven pulley and the first driving pulley, a material baffle plate is sleeved on the outer wall of the movable shaft, the bottom end of the threaded rod is connected to a lifting seat through a bearing, and a pull plate is rotatably connected between the lifting seat and the material baffle plate.

[0009] By adopting the above technical solution, when it is necessary to discharge the mixed material that has not been completely crushed, the staff can rotate the threaded rod to move the threaded rod upward and drive the lifting seat to move upward, and the lifting seat pulls the pull plate.

[0010] Furthermore, a guide rod penetrating to the top of the crushing box is installed on one side of the top of the lifting seat, and the length of the guide rod is smaller than the length of the threaded rod.

[0011] By adopting the above technical solution, the guide rod can play a limiting role to prevent the lifting seat from rotating, so that the lifting seat can only move up and down.

[0012] Furthermore, the bottom of the baffle plate contacts the discharge plate, and the filter screen contacts the bottom of the discharge plate.

[0013] By adopting the above technical solution, the baffle plate can shield the material, preventing the crushed material from falling onto the discharge plate and being discharged through the discharge port.

[0014] Furthermore, the filter assembly also includes a collecting box slidably connected to the lower side of the crushing box, and the collecting box is located below one side of the discharge port.

[0015] By adopting the above technical solution, the collection box can collect the mixed material that has not been completely crushed, so that it is convenient to pour the mixed material back into the feed hopper and then enter the crushing box for crushing again.

[0016] Furthermore, two driving motors are installed on the back of the crushing box, and the output ends of the two driving motors are connected to driving shafts extending into the crushing box, and the outer walls of the driving shafts are sleeved with crushing rollers.

[0017] By adopting the above technical solution, when the mixture needs to be crushed, the mixture can be added into the feed hopper, and then the drive motor is started. The drive motor can drive the drive shaft to rotate and drive the crushing roller to rotate.

[0018] Furthermore, a material guide seat is installed at the lower part of the crushing box, and a material drop opening is opened at the bottom of the crushing box.

[0019] By adopting the above technical solution, the material guide seat is arranged to guide the material, so that the crushed material can slide into the inside of the material drop opening through the material guide seat and fall onto the conveyor belt through the material drop opening.

[0020] Furthermore, a conveyor belt and a plurality of rollers are provided inside the frame, and the tops of the rollers are in contact with the conveyor belt.

[0021] By adopting the above technical solution, the setting of the conveyor belt is convenient for conveying the crushed materials, and the roller can support the conveyor belt to prevent the conveyor belt from excessively sinking downward.

[0022] Furthermore, the driving bevel gear is meshed with the driven bevel gear, and the diameter of the driving bevel gear is smaller than the diameter of the driven bevel gear.

[0023] By adopting the above technical solution, when the active bevel gear rotates, it drives the driven bevel gear to rotate, and the driven bevel gear drives the connecting shaft to rotate.

[0024] Furthermore, a control panel is installed on the outer surface of the crushing box, and the control panel is electrically connected to the driving motor.

[0025] By adopting the above technical solution, the staff can start or shut down the drive motor through the control panel.

[0026] In summary, the utility model mainly has the following beneficial effects:

[0027] 1. The utility model is provided with a blocking component. When the driving shaft rotates, it drives the active bevel gear to rotate, and then drives the driven bevel gear to rotate, and then drives the connecting shaft to rotate. The connecting shaft drives the second active pulley to rotate, and then drives the second driven pulley to rotate through the second belt, and then drives the rotating shaft to rotate, and drives the turntable to rotate. The turntable drives the pull rod to move, and then drives the blocking plate to move. As the turntable continues to rotate, the blocking plate can move back and forth, so that the blocking plate intermittently blocks the feed hopper, so that the mixed material can be intermittently discharged, avoiding a large amount of mixed material from entering the crushing box at the same time and causing blockage. At the same time, when the blocking plate blocks the feed hopper, it can prevent the waste generated in the crushing process from splashing out of the feed hopper;

[0028] 2. The utility model is provided with a filter assembly, and the crushed material will fall onto the filter screen, and the filter screen can filter the crushed material, and the material that is not completely crushed will accumulate on the filter screen. At this time, the rotation of the driving shaft will drive the first active pulley to rotate, and then the first belt drives the first driven pulley to rotate, and drives the rotating shaft to rotate, and the rotating shaft drives the scraper to rotate, so that the scraper can drive the material accumulated on the filter screen to move, avoid the material from continuously accumulating at a fixed position on the filter screen, and prevent the filter screen from being blocked, so that the filter screen can continuously filter the material The filter is then started up and the material on the filter screen is filtered out, and when the material on the filter screen needs to be discharged, the staff can rotate the threaded rod to move the threaded rod upward and drive the lifting seat to move upward, and the lifting seat pulls the pull plate, and the pull plate pulls the baffle plate to rotate, and the baffle plate no longer blocks the discharge plate. At this time, the drive motor is started again to rotate the scraper. When the scraper rotates to an inclined state, the material on the scraper will slide onto the discharge plate, slide out through the discharge port, and fall into the collection box, making it convenient to pour this part of the material into the feed hopper later. In this way, the material accumulated on the filter screen can be quickly cleaned up, and the cleaning efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0030] Figure 2 It is a schematic diagram of the overall front section structure of the utility model;

[0031] Figure 3 This is a schematic diagram of the three-dimensional structure of the back of the crushing box of the utility model;

[0032] Figure 4 This is a schematic diagram of the three-dimensional structure of the filter screen of the utility model;

[0033] Figure 5 It is a schematic diagram of the three-dimensional structure of the blocking plate of the utility model.

[0034] In the figure: 1, frame; 2, conveyor belt; 3, roller; 4, crushing box; 5, guide seat; 6, crushing roller; 7, driving shaft; 8, filtering assembly; 801, rotating shaft; 802, filter screen; 803, discharge port; 804, collecting box; 805, pulling plate; 806, lifting seat; 807, baffle plate; 808, movable shaft; 809, guide rod; 810, threaded rod; 811, discharge plate; 812, first driving pulley; 813, first belt; 814, first driven pulley; 815, scraper; 9, blocking assembly; 901, blocking plate; 902, pull rod; 903, turntable; 904, rotating shaft; 905, second driven pulley; 906, mounting plate; 907, connecting shaft; 908, driven bevel gear; 909, second driving pulley; 910, driving bevel gear; 911, second belt; 10, feed hopper; 11, drop port; 12, control panel; 13, drive motor. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0036] The following describes an embodiment of the utility model based on its overall structure.

[0037] Embodiment 1:

[0038] A mixed material crushing device for glass fiber reinforced plastic material production, such as Figure 1-Figure 5 As shown, the machine comprises a frame 1, a crushing box 4 is installed on the top of the frame 1, a feed hopper 10 is installed on the top of the crushing box 4, a blocking component 9 is provided on one side of the top of the crushing box 4, a filter component 8 is provided inside the crushing box 4, two drive motors 13 are installed on the back of the crushing box 4, the output ends of the two drive motors 13 are connected to a drive shaft 7 extending to the inside of the crushing box 4, and a crushing roller 6 is sleeved on the outer wall of the drive shaft 7. When the mixed material needs to be crushed, the mixed material can be added into the feed hopper 10, and then the drive motor 13 is started to drive the mixed material. The driving motor 13 can drive the driving shaft 7 to rotate and drive the crushing roller 6 to rotate. A material guide seat 5 is installed at the lower part of the crushing box 4. A material drop opening 11 is opened at the bottom of the crushing box 4. The material guide seat 5 is arranged to guide the material so that the crushed material can slide into the material drop opening 11 through the material guide seat 5 and fall onto the conveyor belt 2 through the material drop opening 11. A control panel 12 is installed on the outer surface of the crushing box 4. The control panel 12 is electrically connected to the driving motor 13 so that the staff can start or shut down the driving motor 13 through the control panel 12.

[0039] Specifically, the blocking assembly 9 includes an active bevel gear 910, a mounting plate 906 arranged on one side of the outer surface of the crushing box 4, a blocking plate 901 arranged inside the feed hopper 10, and a rotating shaft 904 arranged on one side of the top of the crushing box 4 through a bearing. The outer wall of the rotating shaft 904 is sleeved with a second driven pulley 905, a turntable 903 is installed on the top of the rotating shaft 904, and a pull rod 902 is movably connected between the turntable 903 and the blocking plate 901, and a connecting shaft 907 is connected to the mounting plate 906 through a bearing. The diameter of the turntable 903 is smaller than the width of the blocking plate 901.

[0040] See also Figure 1 , Figure 2 and Figure 5 A second driving pulley 909 is installed at the top of the connecting shaft 907, and a driven bevel gear 908 is installed at the bottom of the connecting shaft 907. When the driving shaft 7 rotates, it will drive the driving bevel gear 910 to rotate, and then drive the driven bevel gear 908 to rotate, and then drive the connecting shaft 907 to rotate, and the connecting shaft 907 drives the second driving pulley 909 to rotate. A second belt 911 is sleeved between the second driving pulley 909 and the second driven pulley 905. The driving bevel gear 910 is meshed with the driven bevel gear 908. The diameter of the driving bevel gear 910 is smaller than the diameter of the driven bevel gear 908. When the driving bevel gear 910 rotates, it will drive the driven bevel gear 908 to rotate, and the driven bevel gear 908 will drive the connecting shaft 907 to rotate.

[0041] Specifically, the filter assembly 8 includes a first active pulley 812, a rotating shaft 801 and a movable shaft 808 arranged inside the crushing box 4 through a bearing, a threaded rod 810 threadedly connected to the crushing box 4, a discharge port 803 opened on one side of the crushing box 4, and a filter screen 802 and a discharge plate 811 installed inside the crushing box 4. The first active pulley 812 and the active bevel gear 910 are respectively sleeved on the ends of the two driving shafts 7, so that when the driving shaft 7 rotates, the first active pulley 812 and the active bevel gear 910 can be driven to rotate. A scraper 81 is installed at the bottom of the rotating shaft 801. 5. The bottom of the scraper 815 is in contact with the filter 802. Both sides of the scraper 815 are smooth. The rotation of the scraper 815 can drive the impurities on the filter 802 to move, preventing the impurities from accumulating at a fixed position on the filter 802 and causing the filter 802 to be blocked. The filter assembly 8 also includes a collection box 804 slidably connected to the lower side of the crushing box 4. The collection box 804 is located at the lower side of the discharge port 803. The collection box 804 can collect the mixed material that has not been completely crushed, so that it is convenient to pour the mixed material back into the feed hopper 10 and enter the crushing box 4 again for crushing.

[0042] See also Figure 1-Figure 3One end of the rotating shaft 801 extends to the outside of the crushing box 4 and is connected to a first driven pulley 814, and a first belt 813 is sleeved between the first driven pulley 814 and the first driving pulley 812. A baffle plate 807 is sleeved on the outer wall of the movable shaft 808, and the bottom of the baffle plate 807 contacts the discharge plate 811, and the filter screen 802 contacts the bottom of the discharge plate 811. The baffle plate 807 can block the material to prevent the crushed material from falling onto the discharge plate 811 and being discharged through the discharge port 803. The bottom end of the threaded rod 810 is connected to a lifting seat 806 through a bearing, and the lifting seat 806 is connected to the lifting seat 806. A pull plate 805 is rotatably connected between the seat 806 and the baffle plate 807. When it is necessary to discharge the mixed material that has not been completely crushed, the staff can rotate the threaded rod 810 to move the threaded rod 810 upward and drive the lifting seat 806 to move upward, and the lifting seat 806 pulls the pull plate 805. A turntable is installed on the top of the threaded rod 810, which is convenient for the staff to rotate the threaded rod 810 through the turntable. The top of the discharge plate 811 is smooth, and one side of the discharge plate 811 is tilted downward in the direction of the discharge port 803, so that the material can slide into the discharge port 803 through the discharge plate 811, and then be discharged through the discharge port 803.

[0043] Embodiment 2:

[0044] On the basis of the above-mentioned first embodiment, since the threaded rod 810 will also move when it rotates, and the threaded rod 810 will drive the lifting seat 806 to move when it moves, in order to prevent the lifting seat 806 from rotating with the threaded rod 810, the following structure is set to limit the lifting seat 806.

[0045] See also Figure 2 and Figure 4 A guide rod 809 is installed on one side of the top of the lifting seat 806 and passes through the top of the crushing box 4. The length of the guide rod 809 is less than the length of the threaded rod 810. The guide rod 809 can play a limiting role to prevent the lifting seat 806 from rotating, so that the lifting seat 806 can only move up and down.

[0046] Embodiment three:

[0047] On the basis of the above-mentioned first embodiment, when the mixed material is crushed, it needs to be transported out, so the following structure is set.

[0048] See also Figure 1-Figure 2 A conveyor belt 2 and a plurality of rollers 3 are arranged inside the frame 1. The top of the roller 3 is in contact with the conveyor belt 2. The arrangement of the conveyor belt 2 is convenient for conveying the crushed materials and for discharging the materials. The roller 3 can support the conveyor belt 2 and prevent the conveyor belt 2 from excessively sinking downward.

[0049] The working principle of the utility model is as follows: first, the staff can install the device and connect the power supply, then pour the mixture into the feed hopper 10, and then start the drive motor 13. The drive motor 13 can drive the drive shaft 7 to rotate. When the drive shaft 7 rotates, it will drive the active bevel gear 910 to rotate, and then drive the driven bevel gear 908 to rotate, and then drive the connecting shaft 907 to rotate. The connecting shaft 907 drives the second active pulley 909 to rotate, and then drives the second driven pulley 905 to rotate through the second belt 911, and then drives the rotating shaft 904 to rotate, and drives the turntable 903 to rotate. The turntable 903 drives the pull rod 902 to move, and then drives the blocking plate 901 to move, and as the turntable 903 continues to rotate, the blocking plate 901 can be reciprocated, so that the blocking plate 901 intermittently blocks the feed hopper 10, so that the mixture can be intermittently discharged;

[0050] When the mixed material falls into the crushing box 4, the driving shaft 7 rotates to drive the crushing roller 6 to rotate, and the crushing roller 6 can crush the mixed material, and the crushed material will fall downward onto the filter screen 802, and the filter screen 802 can filter the material. The more thoroughly crushed material will pass through the filter screen 802 and fall into the drop port 11, and then fall onto the conveyor belt 2 through the drop port 11, and be transported out through the conveyor belt 2, while the material with larger particle size will accumulate on the filter screen 802;

[0051] At the same time, when the other driving shaft 7 rotates, it drives the first active pulley 812 to rotate, and then drives the first driven pulley 814 to rotate through the first belt 813, and drives the rotating shaft 801 to rotate, and the rotating shaft 801 drives the scraper 815 to rotate, so that the scraper 815 can drive the material accumulated on the filter screen 802 to move, so as to avoid the material from being continuously accumulated at a fixed position on the filter screen 802 and causing the filter screen 802 to be blocked, so that the filter screen can continue to filter the material, and when the material on the filter screen 802 needs to be discharged, the staff can rotate the threaded rod 810 , causing the threaded rod 810 to move up and drive the lifting seat 806 to move up, the lifting seat 806 pulls the pull plate 805, the pull plate 805 pulls the baffle plate 807 to rotate, and the baffle plate 807 no longer blocks the discharge plate 811. At this time, the drive motor 13 is started again to rotate the scraper 815. When the scraper 815 rotates to an inclined state, the material on the scraper 815 will slide onto the discharge plate 811, slide out through the discharge port 803, and fall into the collection box 804, which is convenient for the subsequent pouring of this part of the material into the feed hopper 10 for secondary crushing.

[0052] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A mixed material crushing device for glass fiber reinforced plastic material production, comprising a frame (1), characterized in that: A crushing box (4) is installed on the top of the frame (1), a feed hopper (10) is installed on the top of the crushing box (4), a blocking assembly (9) is provided on one side of the top of the crushing box (4), and the blocking assembly (9) comprises a driving bevel gear (910), a mounting plate (906) provided on one side of the outer surface of the crushing box (4), a blocking plate (901) provided inside the feed hopper (10), and a rotating shaft (904) provided on one side of the top of the crushing box (4) through a bearing, the outer wall of the rotating shaft (904) being sleeved with a second driven pulley (905), and the rotating shaft (90 4), a rotating disc (903) is installed at the top end, and a pull rod (902) is movably connected between the rotating disc (903) and the blocking plate (901), a connecting shaft (907) is connected to the mounting plate (906) through a bearing, and a second driving pulley (909) is installed at the top end of the connecting shaft (907), and a driven bevel gear (908) is installed at the bottom end of the connecting shaft (907), a second belt (911) is sleeved between the second driving pulley (909) and the second driven pulley (905), and a filtering assembly (8) is arranged inside the crushing box (4).

2. The mixed material crushing device for glass fiber reinforced plastic production according to claim 1 is characterized in that: The filtering assembly (8) comprises a first driving pulley (812), a rotating shaft (801) and a movable shaft (808) arranged inside the crushing box (4) via a bearing, a threaded rod (810) threadedly connected to the crushing box (4), a discharge port (803) opened on one side of the crushing box (4), and a filter screen (802) and a discharge plate (811) installed inside the crushing box (4), a scraper (815) is installed at the bottom of the rotating shaft (801), and the rotating shaft (801) One end of the movable shaft (808) extends to the outside of the crushing box (4) and is connected to a first driven pulley (814), and a first belt (813) is sleeved between the first driven pulley (814) and the first driving pulley (812), a material baffle plate (807) is sleeved on the outer wall of the movable shaft (808), the bottom end of the threaded rod (810) is connected to a lifting seat (806) through a bearing, and a pull plate (805) is rotatably connected between the lifting seat (806) and the material baffle plate (807).

3. The mixed material crushing device for glass fiber reinforced plastic production according to claim 2 is characterized in that: A guide rod (809) penetrating to the top of the crushing box (4) is installed on one side of the top of the lifting seat (806), and the length of the guide rod (809) is smaller than the length of the threaded rod (810).

4. The mixed material crushing device for glass fiber reinforced plastic production according to claim 2 is characterized in that: The bottom of the material blocking plate (807) contacts the discharge plate (811), and the filter screen (802) contacts the bottom of the discharge plate (811).

5. The mixed material crushing device for glass fiber reinforced plastic production according to claim 2 is characterized in that: The filtering assembly (8) further comprises a collecting box (804) slidably connected to a lower side of the crushing box (4), and the collecting box (804) is located below a side of the discharge port (803).

6. The mixed material crushing device for glass fiber reinforced plastic production according to claim 1, characterized in that: Two drive motors (13) are installed on the back of the crushing box (4), and the output ends of the two drive motors (13) are connected to a drive shaft (7) extending into the interior of the crushing box (4), and the outer wall of the drive shaft (7) is sleeved with a crushing roller (6).

7. The mixed material crushing device for glass fiber reinforced plastic production according to claim 1 is characterized in that: A material guide seat (5) is installed at the lower part of the crushing box (4), and a material drop opening (11) is provided at the bottom of the crushing box (4).

8. The mixed material crushing device for glass fiber reinforced plastic production according to claim 1, characterized in that: A conveyor belt (2) and a plurality of rollers (3) are arranged inside the frame (1), and the tops of the rollers (3) are in contact with the conveyor belt (2).

9. The mixed material crushing device for glass fiber reinforced plastic production according to claim 1, characterized in that: The driving bevel gear (910) is meshed with the driven bevel gear (908), and the diameter of the driving bevel gear (910) is smaller than the diameter of the driven bevel gear (908).

10. The mixed material crushing device for glass fiber reinforced plastic production according to claim 1, characterized in that: A control panel (12) is installed on the outer surface of the crushing box (4), and the control panel (12) is electrically connected to the driving motor (13).

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