Material mincing equipment for polypropylene processing

Abstract

The utility model relates to the technical field of polypropylene processing, in particular to material mincing equipment for polypropylene processing, which comprises a crushing bin, a support and a crushing device, the support is fixedly connected with the lower surface of the crushing bin, and a blanking plate is mounted on the inner wall of the support and positioned at a discharge port of the crushing bin. The upper surface of the crushing bin is fixedly connected with a feeding hopper, and the crushing device is arranged on the inner wall of the crushing bin; and the crushing device comprises a mounting rod, the mounting rod is rotationally connected with the inner wall of the crushing bin, an assembling groove is formed in the cambered surface of the mounting rod, and a crushing arm is fixedly connected to the position, located on the inner wall of the assembling groove, of the mounting rod. According to the utility model, the crushing device is arranged, so that the crushing efficiency of the equipment on materials is improved, the problem of poor secondary crushing effect on the materials caused by larger gaps of a secondary crushing structure of the equipment is reduced, and the crushing effect of the equipment on the materials is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of polypropylene processing, in particular to a material grinding device for polypropylene processing. Background Art

[0002] Polypropylene is a widely used thermoplastic polymer. It is polymerized from propylene monomers and has many excellent properties. Polypropylene has high chemical resistance and can resist erosion by a variety of acids, alkalis, and salt solutions. Its low density makes the product relatively light. In terms of mechanical properties, it has good strength and rigidity, as well as a certain toughness. Polypropylene is widely used in various fields. For example, in the plastic products industry, it can be used to manufacture films, pipes, plates, injection molded products, etc. Films are often used in packaging materials, such as food packaging; pipes are widely used in the field of water supply and drainage; injection molded products include various daily necessities and industrial parts.

[0003] The prior art includes an invention patent with publication number CN116899676A, which discloses a material grinding device for polypropylene processing. The patent adopts a box body; a crushing drum extending into the interior is fixedly connected to the upper part of the box body, and a group of crushing rollers are rotatably connected in the crushing drum; a connecting pipe is connected to the lower end of the crushing drum, and a screening drum is rotatably connected to the lower end of the connecting pipe. A rotating disk rotatably connected to the screening drum is nested on one side of the screening drum close to the connecting pipe, and a crushing knife roller rotatably connected to the screening drum is installed on the rotating disk. By integrating the crushing drum and the screening drum installed in the box body and the crushing knife roller installed in the screening drum, the crushing drum and the screening drum are rotatably connected in one device. The polypropylene material is crushed and screened in two stages, and the rotating screening drum is used to circulate the polypropylene material through crushing and rotating centrifugal screening, which improves the crushing quality and effective screening area, effectively ensures that the crushed and screened materials meet the particle size processing requirements, and solves the problem that in the traditional polypropylene material crushing process, in order to meet the particle size requirements of the crushed materials, the materials need to be put into the crusher or shredder for primary crushing, and then put into the crusher for secondary crushing, and then the secondary crushed materials are put into the screening machine for screening, and the screened materials that do not meet the requirements are crushed again, which is cumbersome to operate.

[0004] In the process of crushing polypropylene materials with the help of crushing equipment, there is an existing crushing device such as the above-mentioned one, whose secondary crushing structure is only realized by a crushing knife roller. Since only a single crushing knife roller is installed in the screening cylinder, when the crushing knife roller is driven to work, due to the large spacing between the structures of the crushing knife rollers, it is difficult to crush the crushed materials again by relying on a single crushing knife roller, which leads to the problem that the secondary crushing effect of the equipment on the materials is poor. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that when the crushing knife rollers are driven to work, the distance between the structures of the crushing knife rollers is large, and it is difficult to crush the crushed materials again by relying on a single crushing knife roller, which leads to poor secondary crushing effect of the equipment on the materials. A material crushing equipment for polypropylene processing is proposed.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a material grinding device for polypropylene processing, comprising a crushing bin, a bracket and a crushing device, the bracket is fixedly connected to the lower surface of the crushing bin, a material discharge plate is installed on the inner wall of the bracket, the material discharge plate is located at the discharge port of the crushing bin, a feed hopper is fixedly connected to the upper surface of the crushing bin, and the crushing device is arranged on the inner wall of the crushing bin;

[0007] The crushing device comprises a mounting rod, the mounting rod is rotatably connected to the inner wall of the crushing bin, an assembling groove is formed on the arc surface of the mounting rod, a crushing arm is fixedly connected to the inner wall of the mounting rod located at the assembling groove, a gear box is fixedly connected to the upper surface of the bracket, the mounting rod is fixedly connected to the driving end of the gear box, a driven pulley is installed on the linkage end of the gear box, a retaining ring is fixedly connected to the side surface of the driven pulley, a belt is sleeved on the surface of the driven pulley, a positioning frame is fixedly connected to the inner wall of the bracket, a servo motor is fixedly connected to the inner wall of the positioning frame, a transmission pulley is bolted to the driving end of the servo motor, and the belt is sleeved on the surface of the transmission pulley;

[0008] The crushing device also includes a support frame, a mounting cavity is opened on the surface of the crushing bin, the support frame is fixedly connected to the inner wall of the mounting cavity, a first crushing roller is rotatably connected to the inner wall of the support frame, a second crushing roller is fixedly connected to the inner wall of the support frame, a sprocket is fixedly connected to the arc surface of the first crushing roller, a chain is installed on the surface of the sprocket, a fixing frame is fixedly connected to the surface of the crushing bin, a driving motor is fixedly connected to the side surface of the fixing frame, and the first crushing roller is bolted to the driving end of the driving motor.

[0009] Preferably, there are two mounting rods, which are symmetrically arranged front and back about the crushing chamber, and there are multiple assembly grooves, which are arranged in a circular array about the mounting rods. Through the cooperation between the mounting frame and the assembly grooves, the position of the crushing arm can be supported and restricted, thereby ensuring the stability of the crushing arm in the operating state.

[0010] Preferably, there are multiple crushing arms, which are horizontally distributed with respect to the mounting rod, and the crushing arms can be used to perform primary crushing on the materials entering the crushing bin during the process of being driven by the mounting frame.

[0011] Preferably, the diameter of the retaining ring is greater than the diameter of the driven pulley, and the retaining ring contacts the side surface of the belt. The retaining ring can limit the position of the belt on the driven pulley to ensure the stability of the belt in operation.

[0012] Preferably, there are two support frames, which are symmetrically arranged front and back about the crushing bin. The position of the servo motor can be supported and fixed by the support frames to ensure the firmness and safety of the servo motor.

[0013] Preferably, there are multiple first crushing rollers, which are horizontally distributed about the support frame, and the first crushing rollers are located inside the crushing bin. The number of the sprockets matches that of the first crushing rollers, and the chain is meshed with the tooth grooves of the sprocket. Through the cooperation between the chain and the sprocket, all the first crushing rollers can be driven to rotate when the servo motor is working.

[0014] Preferably, there are multiple second crushing rollers, which are horizontally distributed about the support frame. The second crushing rollers are located inside the crushing bin. Through the cooperation between the second crushing roller and the first crushing roller, the primary crushed material can be secondary crushed when the first crushing roller is working.

[0015] Compared with the prior art, the advantages and positive effects of the utility model are:

[0016] In the utility model, by setting a crushing device, when the equipment is used to process polypropylene, the polypropylene is poured into the feed hopper, the feed hopper feeds the material into the crushing bin, and then the switches of the servo motor and the drive motor are turned on. The servo motor and the drive motor are powered by an external power supply and powered on. The servo motor cooperates with the transmission pulley to drive the belt, the belt drives the driven pulley, and the driven pulley cooperates with the gear box to drive the two mounting rods to rotate in opposite directions. The two mounting rods drive the crushing arms to rotate in opposite directions. During the rotation process, the crushing arms perform preliminary crushing on the materials entering the crushing bin. The materials that have completed the preliminary crushing fall below the crushing bin and enter the processing area of ​​the first crushing roller and the second crushing roller. The drive motor is powered on to drive the support frame to rotate. The first crushing roller on the left side rotates the sprocket installed on its surface, and the sprocket cooperates with the chain to drive other sprockets, and other sprockets drive the remaining first crushing rollers to rotate. When all the first crushing rollers are in a rotating state, the first crushing roller cooperates with the second crushing roller in a stationary state to perform secondary crushing on the material. The material that has completed the secondary crushing falls onto the discharge plate through the discharge port of the crushing bin. The discharge plate guides the crushed material to the collection area, and then completes the crushing operation of the material. By setting up the crushing device, the crushing efficiency of the equipment for the material is improved, thereby reducing the problem of large gap in the secondary crushing structure of the equipment, resulting in poor secondary crushing effect on the material, and further improving the crushing effect of the equipment on the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model provides a three-dimensional structural schematic diagram of a material grinding device for polypropylene processing;

[0018] Figure 2 The utility model provides a schematic diagram of the structure of a placing device for a material grinding device for polypropylene processing;

[0019] Figure 3 The utility model provides a schematic diagram of the structure of a crushing device of a material crushing equipment for polypropylene processing;

[0020] Figure 4 The utility model proposes a material grinding device for polypropylene processing Figure 3 Schematic diagram of the structure at A in the middle;

[0021] Figure 5 The utility model provides a side structural schematic diagram of a crushing device of a material crushing equipment for polypropylene processing.

[0022] Legend:

[0023] 1. Crushing bin; 2. Bracket; 3. Unloading plate; 4. Feed hopper; 5. Crushing device; 51. Mounting rod; 52. Assembly slot; 53. Crushing arm; 54. Gear box; 55. Driven pulley; 56. Block ring; 57. Belt; 58. Positioning frame; 59. Servo motor; 510. Drive pulley; 511. Mounting cavity; 512. Support frame; 513. First crushing roller; 514. Second crushing roller; 515. Sprocket; 516. Chain; 517. Fixed frame; 518. Driving motor. DETAILED DESCRIPTION

[0024] See also Figure 1-Figure 5 The utility model provides a technical solution: a material grinding equipment for polypropylene processing, including a crushing bin 1, a bracket 2 and a crushing device 5, the bracket 2 is fixedly connected to the lower surface of the crushing bin 1, a feed plate 3 is installed on the inner wall of the bracket 2, the feed plate 3 is located at the discharge port of the crushing bin 1, a feed hopper 4 is fixedly connected to the upper surface of the crushing bin 1, and the crushing device 5 is arranged on the inner wall of the crushing bin 1.

[0025] In this embodiment: the crushing device 5 includes a mounting rod 51, which is rotatably connected to the inner wall of the crushing bin 1, an assembling groove 52 is provided on the arc surface of the mounting rod 51, a crushing arm 53 is fixedly connected to the inner wall of the mounting rod 51 located at the assembling groove 52, a gear box 54 is fixedly connected to the upper surface of the bracket 2, the mounting rod 51 is fixedly connected to the driving end of the gear box 54, a driven pulley 55 is installed at the linkage end of the gear box 54, a retaining ring 56 is fixedly connected to the side surface of the driven pulley 55, a belt 57 is sleeved on the surface of the driven pulley 55, a positioning frame 58 is fixedly connected to the inner wall of the positioning frame 58, a servo motor 59 is fixedly connected to the inner wall of the positioning frame 58, a driving pulley 510 is bolted to the driving end of the servo motor 59, and the belt 57 is sleeved on the surface of the driving pulley 510;

[0026] The crushing device 5 also includes a support frame 512, and an installation cavity 511 is opened on the surface of the crushing bin 1. The support frame 512 is fixedly connected to the inner wall of the installation cavity 511, and the inner wall of the support frame 512 is rotatably connected to the first crushing roller 513, and the inner wall of the support frame 512 is fixedly connected to the second crushing roller 514, and the arc surface of the first crushing roller 513 is fixedly connected to the sprocket 515, and the surface of the sprocket 515 is installed with a chain 516, and the surface of the crushing bin 1 is fixedly connected to a fixing frame 517, and the side surface of the fixing frame 517 is fixedly connected to a driving motor 518, and the first crushing roller 513 is bolted to the driving end of the driving motor 518.

[0027] Specifically, there are two mounting rods 51, which are symmetrically arranged front and back about the crushing chamber 1. There are multiple assembly grooves 52, which are arranged in a circular array about the mounting rods 51. Through the cooperation between the mounting frame and the assembly grooves 52, the position of the crushing arm 53 can be supported and restricted, thereby ensuring the stability of the crushing arm 53 in the operating state.

[0028] Specifically, there are multiple crushing arms 53 , and the multiple crushing arms 53 are horizontally distributed with respect to the mounting rod 51 .

[0029] In this embodiment, the crushing arm 53 can be used to perform primary crushing on the materials entering the crushing bin 1 during the process of being driven by the mounting frame.

[0030] Specifically, the diameter of the retaining ring 56 is greater than the diameter of the driven pulley 55, and the retaining ring 56 contacts the side surface of the belt 57. The retaining ring 56 can limit the position of the belt 57 on the driven pulley 55 to ensure the stability of the belt 57 in the running state.

[0031] In this embodiment, there are two support frames 512 , and the two support frames 512 are symmetrically arranged front and back with respect to the crushing chamber 1 .

[0032] In this embodiment, the position of the servo motor 59 can be supported and fixed by the support frame 512 to ensure the firmness and safety of the servo motor 59 .

[0033] Specifically, there are multiple first crushing rollers 513, which are horizontally distributed about the support frame 512, and the first crushing rollers 513 are located inside the crushing bin 1. The number of sprockets 515 matches the number of the first crushing rollers 513, and the chain 516 is meshed with the tooth grooves of the sprocket 515. Through the cooperation between the chain 516 and the sprocket 515, all the first crushing rollers 513 can be driven to rotate when the servo motor 59 is working.

[0034] Specifically, there are multiple second crushing rollers 514 , and the multiple second crushing rollers 514 are horizontally distributed with respect to the support frame 512 . The second crushing rollers 514 are located inside the crushing bin 1 .

[0035] In this embodiment, through the cooperation between the second crushing roller 514 and the first crushing roller 513, the primary crushed material can be crushed for the second time when the first crushing roller 513 is working.

[0036] Working principle: When the equipment is used to process polypropylene, the polypropylene is poured into the feed hopper 4, and the feed hopper 4 feeds the material into the crushing bin 1, and then the switches of the servo motor 59 and the drive motor 518 are turned on. The servo motor 59 and the drive motor 518 are powered by an external power supply and powered on. The servo motor 59 cooperates with the transmission pulley 510 to drive the belt 57, and the belt 57 drives the driven pulley 55. The driven pulley 55 cooperates with the gear box 54 to drive the two mounting rods 51 to rotate in opposite directions. The two mounting rods 51 drive the crushing arms 53 to rotate in opposite directions. During the rotation process, the crushing arms 53 perform preliminary crushing on the materials entering the crushing bin 1. The materials that have completed the preliminary crushing fall under the crushing bin 1 and enter the processing area of ​​the first crushing roller 513 and the second crushing roller 514. The drive motor 518 is powered on to drive the support frame 512 The first crushing roller 513 on the far left rotates the sprocket 515 installed on its surface, and the sprocket 515 cooperates with the chain 516 to drive other sprockets 515, and the other sprockets 515 drive the remaining first crushing rollers 513 to rotate. When all the first crushing rollers 513 are in a rotating state, the first crushing roller 513 cooperates with the second crushing roller 514 in a stationary state to perform secondary crushing on the material, and the material that has completed the secondary crushing falls onto the discharge plate 3 through the discharge port of the crushing bin 1, and the discharge plate 3 guides the crushed material to the collection area, and then completes the crushing operation of the material. By setting the crushing device 5, the crushing efficiency of the equipment for the material is improved, thereby reducing the problem of large gap in the secondary crushing structure of the equipment, resulting in poor secondary crushing effect on the material, and further improving the crushing effect of the equipment on the material.

Claims

1. A material grinding device for polypropylene processing, comprising a grinding chamber (1), a support (2) and a grinding device (5), characterized in that: The support (2) is fixedly connected to the lower surface of the crushing bin (1); a feed plate (3) is installed on the inner wall of the support (2); the feed plate (3) is located at the discharge port of the crushing bin (1); a feed hopper (4) is fixedly connected to the upper surface of the crushing bin (1); and the crushing device (5) is arranged on the inner wall of the crushing bin (1); The crushing device (5) comprises a mounting rod (51), the mounting rod (51) being rotatably connected to the inner wall of the crushing chamber (1), the arc surface of the mounting rod (51) being provided with an assembly groove (52), the mounting rod (51) being fixedly connected to the inner wall of the assembly groove (52) with a crushing arm (53), the upper surface of the bracket (2) being fixedly connected to a gear box (54), the mounting rod (51) being fixedly connected to the driving end of the gear box (54), and the linkage of the gear box (54) A driven pulley (55) is installed at the end, a retaining ring (56) is fixedly connected to the side surface of the driven pulley (55), a belt (57) is sleeved on the surface of the driven pulley (55), a positioning frame (58) is fixedly connected to the inner wall of the bracket (2), a servo motor (59) is fixedly connected to the inner wall of the positioning frame (58), a driving end of the servo motor (59) is bolted to a driving pulley (510), and the belt (57) is sleeved on the surface of the driving pulley (510); The crushing device (5) further comprises a support frame (512); a mounting cavity (511) is provided on the surface of the crushing bin (1); the support frame (512) is fixedly connected to the inner wall of the mounting cavity (511); a first crushing roller (513) is rotatably connected to the inner wall of the support frame (512); a second crushing roller (514) is fixedly connected to the inner wall of the support frame (512); a sprocket (515) is fixedly connected to the arc surface of the first crushing roller (513); a chain (516) is installed on the surface of the sprocket (515); a fixing frame (517) is fixedly connected to the surface of the crushing bin (1); a driving motor (518) is fixedly connected to the side surface of the fixing frame (517); and the first crushing roller (513) is bolted to the driving end of the driving motor (518).

2. The material grinding equipment for polypropylene processing according to claim 1, characterized in that: The number of the mounting rods (51) is two, and the two mounting rods (51) are arranged front-to-back symmetrically with respect to the crushing bin (1); the number of the assembly grooves (52) is multiple, and the multiple assembly grooves (52) are arranged in a circular array with respect to the mounting rods (51).

3. The material grinding equipment for polypropylene processing according to claim 1, characterized in that: There are a plurality of crushing arms (53), and the plurality of crushing arms (53) are horizontally distributed with respect to the mounting rod (51).

4. The material grinding equipment for polypropylene processing according to claim 1, characterized in that: The diameter of the retaining ring (56) is greater than the diameter of the driven pulley (55), and the retaining ring (56) is in contact with the side surface of the belt (57).

5. The material grinding equipment for polypropylene processing according to claim 1, characterized in that: The number of the support frames (512) is two, and the two support frames (512) are arranged front-to-back symmetrically with respect to the crushing bin (1).

6. The material grinding equipment for polypropylene processing according to claim 1, characterized in that: The number of the first crushing rollers (513) is multiple, and the multiple first crushing rollers (513) are horizontally distributed with respect to the support frame (512). The first crushing rollers (513) are located inside the crushing bin (1). The number of the sprockets (515) matches the number of the first crushing rollers (513), and the chain (516) is meshed with the tooth grooves of the sprockets (515).

7. The material grinding equipment for polypropylene processing according to claim 1, characterized in that: There are a plurality of second crushing rollers (514), the plurality of second crushing rollers (514) are horizontally distributed with respect to the support frame (512), and the second crushing rollers (514) are located inside the crushing bin (1).

Images