A crushing device for PVC plastic particle production

Abstract

The utility model discloses a kind of crushing devices for PVC plastic particle production, including shell, the top of the shell is fixedly connected with machine cover, the top of the machine cover is connected with feed pipe, the top of the feed pipe is fixedly connected with hopper, the inner wall of the shell is rotatably connected with crushing roller by bearing, the inner wall of the hopper is rotatably connected with shaft by sealing bearing, the outer wall one side of the shaft is fixedly connected with transverse plate. The utility model relates to the technical field of plastic particle production, and the crushing device for PVC plastic particle production, by the cooperation between connecting column, rack, second gear, shaft and transverse plate, the opening size of the top of feed pipe is adjusted, when the PVC plastic raw material block of different size is crushed, small particle raw material can continuously flow into crushing cavity through feed pipe like water flow, the falling speed of large particle is relatively slow, causing the blockage in the inside of feed pipe, thereby reduce the overall working effect problem of crushing device.

Description

Technical Field

[0001] This utility model relates to the field of plastic pellet production technology, specifically a crushing device for PVC plastic pellet production. Background Technology

[0002] PVC plastic pellets are a type of thermoplastic with good chemical resistance, insulation, and mechanical strength, and are relatively inexpensive. These properties make PVC a very important material in industry and daily life. The production of PVC plastic pellets requires processing the PVC plastic raw material into pellets using a crushing device.

[0003] In traditional crushing equipment, workers feed PVC plastic raw materials into the crusher through the feed pipe. The large pieces of raw materials are processed into PVC plastic granules by two relatively rotating crushing rollers, and finally discharged from the crusher. However, when crushing PVC plastic raw material blocks of different sizes, since the opening size inside the feed pipe is fixed, when crushing some small particles, the small particles will continuously flow into the crushing chamber through the feed pipe like water, and their falling speed is far greater than the crushing rhythm of the crushing roller. When crushing some large particles, the falling speed of the large particles is relatively slow, which may cause them to get stuck in the feed pipe, causing blockage inside the feed pipe, thereby reducing the overall working efficiency of the crushing device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a crushing device for PVC plastic granule production. It solves the problem that when crushing PVC plastic raw material blocks of different sizes, because the opening size inside the feed pipe is fixed, small particles of raw material will continuously flow into the crushing chamber like water, while large particles fall at a relatively slow speed, causing blockage inside the feed pipe and thus reducing the overall working efficiency of the crushing device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a crushing device for PVC plastic granule production, comprising a housing, a cover fixedly connected to the top of the housing, a feed pipe connected to the top of the cover, a hopper fixedly connected to the top of the feed pipe, a crushing roller rotatably connected to the inner wall of the housing via a bearing, a rotating shaft rotatably connected to the inner wall of the hopper via a sealed bearing, a horizontal plate fixedly connected to one side of the outer wall of the rotating shaft, a second gear fixedly connected to the end of the rotating shaft, a rack meshing with the upper part of the second gear, a connecting column fixedly connected to the end of the rack, and a baffle fixedly connected to the inner wall of the hopper, the baffle being located above the horizontal plate.

[0006] Preferably, the back of the hopper is fixedly connected to a housing by bolts, and a double-headed electric telescopic rod is fixedly connected to the inner wall of the housing by a fixing seat. The output end of the double-headed electric telescopic rod is fixedly connected to one side of the connecting column, and the bottom of the connecting column is slidably engaged with the lower part of the inner wall of the housing.

[0007] Preferably, a bushing is fitted onto the outer wall of the horizontal plate, the bushing is fixed to the outer wall of the horizontal plate by bolts, a groove is formed on the outer wall of the horizontal plate, a protrusion is fixed to the inner wall of the bushing, and the outer wall of the protrusion is slidably connected to the inner wall of the groove.

[0008] Preferably, a feeding plate is fixedly connected to the lower inner wall of the housing, a discharge port is opened at the bottom of the housing, and a collection box is provided below the discharge port.

[0009] Preferably, the side wall of the housing is fixedly connected to a box body by bolts, the inner wall of the box body is fixedly connected to a motor by a motor sleeve, the number of crushing rollers is two, the outer wall of the ends of the two crushing rollers is fixedly connected to a first gear, the two first gears mesh with each other, and the end of one crushing roller is fixedly connected to the output end of the motor. Beneficial effects

[0010] This utility model provides a crushing device for PVC plastic granule production. It has the following advantages: This crushing device for PVC plastic granule production, through the cooperation of a double-headed electric telescopic rod, connecting column, rack, second gear, rotating shaft, and horizontal plate, achieves adjustment of the opening size at the top of the feed pipe. This solves the problem that when crushing PVC plastic raw material blocks of different sizes, because the opening size inside the feed pipe is fixed, small particles continuously flow into the crushing chamber like water, while large particles fall slowly, causing blockage inside the feed pipe and reducing the overall working efficiency of the crushing device.

[0011] The cooperation between bushings, grooves, and protrusions protects the surface of the horizontal plate, reduces its wear, and increases its service life. This solves the problem that during the production of PVC plastic granules, the surface of the horizontal plate is in prolonged contact and friction with PVC plastic raw material blocks of different sizes or shapes, which may cause rapid wear of the horizontal plate surface due to impact or scratches from the raw material blocks, thus reducing the service life of the horizontal plate. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 An exterior schematic diagram; Figure 3 for Figure 1 A schematic diagram of the structure of the middle casing, crushing rollers, and feed plate; Figure 4 for Figure 1 A schematic diagram of the structure of the feed pipe, hopper, and outer shell; Figure 5 for Figure 1 A schematic diagram of the middle horizontal plate.

[0013] In the diagram: 1. Casing; 2. Cover; 3. Feed pipe; 4. Crushing roller; 5. Feed plate; 6. Discharge port; 7. Collection box; 8. Hopper; 9. Box body; 10. Motor; 11. First gear; 12. Double-headed electric telescopic rod; 13. Connecting column; 14. Rack; 15. Second gear; 16. Shaft; 17. Horizontal plate; 18. Outer shell; 19. Baffle; 20. Bushing; 21. Groove; 22. Protrusion. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0015] When crushing PVC plastic raw material blocks of different sizes, since the opening size inside the feed pipe is fixed, small particles of raw material will continuously flow into the crushing chamber through the feed pipe like water. Large particles fall at a slower speed, causing blockage inside the feed pipe, thereby reducing the overall working efficiency of the crushing device.

[0016] In view of this, the present invention provides a crushing device for PVC plastic granule production. Through the cooperation of a double-headed electric telescopic rod, a connecting column, a rack, a second gear, a rotating shaft, and a horizontal plate, the size of the opening at the top of the feed pipe can be adjusted. This solves the problem that when crushing PVC plastic raw material blocks of different sizes, because the opening size inside the feed pipe is fixed, small particles will continuously flow into the crushing chamber like water, while large particles fall at a relatively slow speed, causing blockage inside the feed pipe and thus reducing the overall working efficiency of the crushing device.

[0017] Those skilled in the art will connect the electrical components and their compatible power supplies in this case using wires. Appropriate controllers and encoders should be selected according to the actual situation to meet control requirements. The specific connection and control sequence should refer to the working principle below, where the electrical components are connected in the order of operation. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, without further explanation of electrical control.

[0018] Example 1, by Figure 1-5 It is understood that the crushing device for PVC plastic pellet production in this case includes a housing 1, a cover 2 fixedly connected to the top of the housing 1, a feed pipe 3 connected to the top of the cover 2, a hopper 8 fixedly connected to the top of the feed pipe 3, a crushing roller 4 rotatably connected to the inner wall of the housing 1 via a bearing, a rotating shaft 16 rotatably connected to the inner wall of the hopper 8 via a sealed bearing, a horizontal plate 17 fixedly connected to one side of the outer wall of the rotating shaft 16, a second gear 15 fixedly connected to the end of the rotating shaft 16, a rack 14 meshing above the second gear 15, a connecting column 13 fixedly connected to the end of the rack 14, and a baffle 19 fixedly connected to the inner wall of the hopper 8, the baffle 19 being located above the horizontal plate 17. In the specific implementation process, it is worth noting that the casing 1 and the cover 2 can be connected by bolts. Workers can disassemble and reassemble the cover 2 by rotating the bolts, thereby allowing for the inspection, maintenance, cleaning, and replacement of the crushing roller 4. When the crushing device is in operation, the worker first moves the connecting column 13, which drives the rack 14 to move. The rack 14 then drives the second gear 15 to move, which in turn drives the rotating shaft 16 to rotate. The rotating shaft 16 then moves the horizontal plate 17, rotating both sides of the horizontal plate 17 to an angle that matches the size of the PVC plastic raw material block and the expected crushing volume. After this is completed, the movement of the connecting column 13 is stopped. If the raw material particle size is large, the feeding should be slow, and the horizontal plate 17 should be rotated to reduce the opening. If the raw material particle size is small, it can be fed quickly. The horizontal plate 17 rotates to increase the opening, and then the two crushing rollers 4 rotate relative to each other. The worker puts the PVC plastic raw material block into the hopper 8 through the opening on the front of the hopper 8. At this time, some of the PVC plastic raw material blocks fall onto the baffle 19. The raw material blocks move along the surface of the baffle 19. The baffle 19 blocks the position where the horizontal plate 17 and the rotating shaft 16 are connected to prevent the raw material blocks from falling into it and jams the horizontal plate 17. The PVC plastic raw material blocks enter the feed pipe 3 along the hopper 8. Finally, the PVC plastic raw material blocks fall onto the crushing rollers 4. The crushing rollers 4 crush the raw material blocks into granules to produce PVC plastic granules, thereby adjusting the size of the opening at the top of the feed pipe 3. Furthermore, the back of the hopper 8 is fixedly connected to the outer shell 18 by bolts, and the inner wall of the outer shell 18 is fixedly connected to the double-headed electric telescopic rod 12 by a fixed seat. The output end of the double-headed electric telescopic rod 12 is fixedly connected to one side of the connecting column 13, and the bottom of the connecting column 13 is slidably engaged with the lower part of the inner wall of the outer shell 18. In the specific implementation process, it is worth noting that the model of the double-headed electric telescopic pole 12 is JEA-06. The connection method between the double-headed electric telescopic pole 12 and the external controller is as follows: the controller outputs a 0-10V or 4-20mA analog signal, which is connected to the motor driver built into the double-headed electric telescopic pole 12 via a shielded cable. The controller inside the electric telescopic pole 12 adjusts the speed and direction of the motor according to the magnitude of the received analog signal, thereby realizing the control of the telescopic length of the double-headed electric telescopic pole. This connection method has relatively strong anti-interference ability and stable signal transmission, and is suitable for occasions with relatively complex production environments and many interference sources. Heat dissipation holes and wiring holes can be opened on the outer wall of the outer shell 18. The heat dissipation holes can dissipate heat from the double-headed electric telescopic pole 12 inside the outer shell 18, and the wiring holes facilitate external wiring of the double-headed electric telescopic pole 12. When the horizontal plate 17 is rotated, the operator starts the double-headed electric telescopic rod 12 through the controller. The double-headed electric telescopic rod 12 drives the connecting column 13 to move. The connecting column 13 slides on the limiting groove at the bottom of the inner wall of the outer shell 18 to limit the connecting column 13, thereby making the horizontal plate 17 rotate. After completion, the controller stops the double-headed electric telescopic rod 12 from working, thus realizing the drive of the horizontal plate 17 to rotate. Furthermore, a bushing 20 is fitted onto the outer wall of the horizontal plate 17. The bushing 20 is fixed to the outer wall of the horizontal plate 17 by bolts. A groove 21 is provided on the outer wall of the horizontal plate 17. A protrusion 22 is fixed to the inner wall of the bushing 20. The outer wall of the protrusion 22 is slidably connected to the inner wall of the groove 21. In the specific implementation process, it is worth noting that the bushing 20 is made of polytetrafluoroethylene (PTFE). PTFE has excellent wear resistance, self-lubricating properties, low coefficient of friction, and good chemical stability, and is not prone to reacting with PVC raw materials. First, the worker moves the bushing 20 and puts it on the horizontal plate 17. At the same time, the bushing 20 drives the protrusion 22 to move. The protrusion 22 moves in the groove 21, thereby limiting the bushing 20. After the worker puts the bushing 20 on the horizontal plate 17, the worker rotates the corresponding bolts to fix the bushing 20 on the horizontal plate 17, thereby protecting the surface of the horizontal plate 17, reducing its wear, and increasing its service life. Furthermore, a feeding plate 5 is fixedly connected to the lower inner wall of the housing 1, and a discharge port 6 is opened at the bottom of the housing 1. A collection box 7 is set below the discharge port 6. In the specific implementation process, it is worth noting that when some of the broken PVC plastic particles fall into the collection box 7 through the discharge port 6, and the other part falls onto the feed plate 5, it is adjusted along the feed plate 5 and thus into the collection box 7, thereby realizing the collection of PVC plastic particles.

[0019] Example 2, by Figure 1-3It can be seen that the side wall of the housing 1 is fixedly connected to the box 9 by bolts, the inner wall of the box 9 is fixedly connected to the motor 10 by the motor sleeve, there are two crushing rollers 4, the outer walls of the ends of the two crushing rollers 4 are fixedly connected to the first gear 11, the two first gears 11 mesh with each other, and the end of one crushing roller 4 is fixedly connected to the output end of the motor 10. In the specific implementation process, it is worth noting that the model of motor 10 is Y2-132S-4. The connection between motor 10 and the controller is through a frequency converter. The controller communicates with the frequency converter through analog signals or a digital communication interface. The analog signals can control the output frequency of the frequency converter, thereby adjusting the speed of motor 10. The digital communication interface can realize richer control functions, such as forward and reverse control of motor 10, fault monitoring and alarm, etc. The frequency converter can also protect motor 10 from overcurrent, overload, and undervoltage, improving the reliability and stability of motor 10 operation. Ventilation holes and wiring holes can be opened on the outer wall of the housing 9. The ventilation holes can dissipate heat from the motor 10 inside the housing 9, and the wiring holes facilitate external wiring of motor 10. Workers start motor 10 via controller. Motor 10 drives the front crushing roller 4 to rotate, which in turn drives the first gear 11 at its end to rotate, which in turn drives the first gear 11 on the rear crushing roller 4 to rotate, thus causing the rear crushing roller 4 to rotate and begin crushing the PVC plastic raw material block. After crushing is completed, workers stop motor 10 via controller to start both crushing rollers 4 to rotate. During the manual transfer process after crushing, any individual particles that may not be completely crushed can be picked out.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crushing device for PVC plastic pellet production, comprising a housing (1), characterized in that: The top of the housing (1) is fixedly connected to a cover (2), the top of the cover (2) is connected to a feed pipe (3), the top of the feed pipe (3) is fixedly connected to a hopper (8), the inner wall of the housing (1) is rotatably connected to a crushing roller (4) via a bearing, the inner wall of the hopper (8) is rotatably connected to a rotating shaft (16) via a sealed bearing, a horizontal plate (17) is fixedly connected to one side of the outer wall of the rotating shaft (16), a second gear (15) is fixedly connected to the end of the rotating shaft (16), a rack (14) is meshed above the second gear (15), a connecting column (13) is fixedly connected to the end of the rack (14), and a baffle (19) is fixedly connected to the inner wall of the hopper (8), the baffle (19) is located above the horizontal plate (17).

2. The crushing device for PVC plastic particle production according to claim 1, characterized in that: The back of the hopper (8) is fixedly connected to the outer shell (18) by bolts. The inner wall of the outer shell (18) is fixedly connected to the double-headed electric telescopic rod (12) by a fixed seat. The output end of the double-headed electric telescopic rod (12) is fixedly connected to one side of the connecting column (13). The bottom of the connecting column (13) is slidably engaged with the lower part of the inner wall of the outer shell (18).

3. The crushing device for PVC plastic particle production according to claim 1, characterized in that: A bushing (20) is fitted onto the outer wall of the horizontal plate (17). The bushing (20) is fixed to the outer wall of the horizontal plate (17) by bolts. A groove (21) is provided on the outer wall of the horizontal plate (17). A protrusion (22) is fixed to the inner wall of the bushing (20). The outer wall of the protrusion (22) is slidably connected to the inner wall of the groove (21).

4. The crushing device for PVC plastic pellet production according to claim 1, characterized in that: A feeding plate (5) is fixedly connected to the lower inner wall of the housing (1), and a discharge port (6) is opened at the bottom of the housing (1). A collection box (7) is provided below the discharge port (6).

5. The crushing device for PVC plastic pellet production according to claim 1, characterized in that: The side wall of the housing (1) is fixedly connected to the box body (9) by bolts. The inner wall of the box body (9) is fixedly connected to the motor (10) by the motor sleeve. There are two crushing rollers (4). The outer wall of the ends of the two crushing rollers (4) is fixedly connected to the first gear (11). The two first gears (11) mesh with each other. The end of one crushing roller (4) is fixedly connected to the output end of the motor (10).

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