Raw material crushing device for rubber and plastic particle production

Abstract

The utility model discloses a raw material crushing device for rubber and plastic particle production, which belongs to the field of rubber and plastic processing and comprises a case, a feed port fixedly mounted at the top of the case and used for feeding materials and a discharge port fixedly mounted at the bottom of the case and used for discharging processed materials. Two hobs used for smashing materials are oppositely arranged at the position, below the feeding port, in the machine box, and a sweeping mechanism is arranged at the position, below the two hobs, in the machine box. According to the smashing device, the sweeping mechanism is arranged below the two hobs, sweeping is conducted through the three brush strips on the three-way supporting plate, after one brush strip is consumed, the motor is started to drive the rotating rod to rotate, the rotating rod drives the brush strips on the sleeve to rotate, then the next set of brush strips are replaced, bin opening for replacement is not needed, the replacement frequency is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of rubber and plastic processing, specifically a raw material crushing device for the production of rubber and plastic particles. Background Technology

[0002] Plastic pellets, a common name for plastic granules, are raw materials used for storing, transporting, and processing plastics in a semi-finished form. Plastics are a class of polymer materials, derived from petroleum, which produces ethylene, propylene, vinyl chloride, styrene, etc. Under certain conditions, the molecules of these substances can react with each other to form compounds with very high molecular weights, i.e., polymers. In plastic pellet production, plastic crushers pulverize various plastics and rubbers, such as plastic profiles, pipes, rods, filaments, films, and waste rubber products. The resulting pellets can be directly used for extrusion as raw materials.

[0003] Chinese utility model patent CN212418189U discloses a raw material crushing device for plastic granule production. It uses a cleaning plate installed under the crushing roller to clean debris adhering to the blades, preventing it from affecting the crushing accuracy and avoiding material buildup that could jam the machine. While this effectively cleans the debris from the blades, the brushes on the cleaning plate are consumable parts, especially since they are in contact with the blades and wear out much faster. Although a spring is used to ensure the brushes continuously rise with wear, maintaining constant contact with the blades and ensuring good cleaning, frequent replacements are necessary, requiring each maintenance session to open the casing, resulting in low efficiency.

[0004] Therefore, a raw material crushing device for the production of rubber and plastic particles is provided to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This utility model provides a raw material crushing device for the production of rubber and plastic particles, which aims to solve the problems mentioned in the background art, such as the rapid wear of the cleaning plate brush, the need for frequent replacement, the need to open the box for each maintenance, and the low efficiency.

[0007] (2) Technical solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a raw material crushing device for rubber and plastic particle production, comprising a casing and a feed inlet fixedly installed on the top of the casing for feeding materials and a discharge outlet fixedly installed on the bottom of the casing for discharging processed materials. Inside the casing, two roller cutters for crushing materials are positioned opposite each other below the feed inlet, and a cleaning mechanism is provided inside the casing below the two roller cutters.

[0009] To reduce the frequency of cleaning plate replacement and improve efficiency, the cleaning mechanism includes two motors positioned below two roller cutters on the outer wall of the casing. A rotating rod is fixedly connected to the output end of each motor. The two rotating rods extend through the side wall of the casing into the inner cavity. A sleeve is fitted onto the outer wall of the portion of the rotating rod within the inner cavity. Two three-way support plates are positioned opposite each other at both ends of the sleeve. Three brush strips are evenly distributed between the opposing surfaces of the two three-way support plates. A spring is installed at the bottom of each of the three brush strips and is fixedly connected to the outer wall of the sleeve. By placing the cleaning mechanism below the two roller cutters, cleaning is performed using the three brush strips on the three-way support plates. After one brush strip is worn out, the motor is started to rotate the rotating rod, which in turn rotates the brush strips on the sleeve, thus replacing the next set of brush strips. This eliminates the need to open the casing for replacement, reducing the replacement frequency and improving production efficiency.

[0010] Preferably, in order to enable the sleeve to be smoothly assembled with the rotating rod to achieve rotation, an alignment strip is fixedly connected to the outer side wall of the rotating rod, and an alignment groove is opened on the inner side wall of the sleeve to interlock with the alignment strip. Through the interlocking cooperation of the alignment strip and the alignment groove, the effect of foolproof engagement is achieved, making assembly more convenient.

[0011] Preferably, in order to ensure the stability of the tee support plate in supporting the brush strip, the tee support plate includes three support plates arranged in a ring array on the outer wall of the sleeve. The three support plates are welded and fixed to the outer wall of the sleeve. The connection between the welded and fixed support plates and the sleeve is stable and reliable, and is not easy to shift or break.

[0012] Preferably, to facilitate subsequent brush strip replacement, the support plate has an inverted T-shaped groove formed by a combination of vertical and horizontal grooves. The width of the vertical groove of the T-shaped groove is smaller than the width of the horizontal groove. The width of the brush strip is the same as the width of the horizontal groove of the T-shaped groove. Near both ends of the brush strip, there are locking slots with the same width as the vertical groove of the T-shaped groove. During installation, the brush strip is inserted into the horizontal groove and pressed against the spring. After both ends of the brush strip are locked into the corresponding horizontal grooves, the brush strip is released. The locking slots of the brush strip will automatically lock into the vertical grooves due to the elastic force of the spring, thus fixing it in place. This makes disassembly and assembly very convenient.

[0013] Preferably, to facilitate subsequent overall maintenance and replacement of the brush strips, two operation windows for replacing the brush strips are provided on the outer wall of the housing opposite to the motor. Each of the two operation windows is hinged with a window plate, and bearing components for supporting the rotating rod are installed on the side of the two window plates adjacent to the housing. During replacement, it is only necessary to open the window plate on the operation window and then pull the sleeve directly outward through the operation window to replace and maintain the brush strip. The bearing components support the rotating rod when the window plate is closed, thereby improving its load-bearing capacity.

[0014] Preferably, in order to remove dust from the crushed rubber and plastic granules, the crushing device further includes a dust collection mechanism. The dust collection mechanism includes an air inlet and an air outlet respectively opened on two sides of the outer wall of the machine casing that are opposite to the motor and the operation window. An air inlet filter plate is installed on the air inlet, and an air outlet filter plate is installed on the air outlet. A fan is installed outside the air inlet filter plate. When the rubber and plastic granules are crushed by the roller cutter and fall to the bottom of the machine casing, the fan blows air. The air force enters the machine casing cavity through the air inlet filter plate to blow the crushed material. The dust is discharged through the air outlet filter plate, completing the dust removal work.

[0015] (III) Beneficial Effects

[0016] This crushing device uses a cleaning mechanism located below the two roller cutters. Three brushes on a three-way support plate clean the material. Once a brush is worn out, a motor is started to rotate a rotating rod, which in turn rotates the brushes on the sleeve, thus replacing the next set of brushes. This eliminates the need to open the chamber for replacement, reducing the frequency of replacement and improving production efficiency.

[0017] In this crushing device, when the rubber and plastic granules are crushed by the roller cutter and fall to the bottom of the machine box, the fan blows air through the inlet filter plate into the machine box cavity, blowing the crushed material and expelling the dust through the outlet filter plate, thus completing the dust removal work and improving the quality of subsequent production. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a raw material crushing device for producing rubber and plastic particles.

[0019] Figure 2 A cross-sectional schematic diagram of a raw material crushing device for producing rubber and plastic particles;

[0020] Figure 3 for Figure 2 A in the middle is an enlarged schematic diagram;

[0021] Figure 4 This is a side view of a raw material crushing device for producing rubber and plastic particles.

[0022] In the picture:

[0023] 1. Chassis; 2. Feed inlet; 3. Discharge outlet; 4. Roller cutter; 5. Cleaning mechanism; 51. Motor; 52. Rotating rod; 53. Sleeve; 531. Operating window; 532. Window panel; 533. Bearing components; 54. T-shaped support plate; 55. Brush strip; 56. Spring components; 57. Alignment strip; 58. Alignment groove; 59. Support plate; 591. T-slot; 592. Bayonet groove; 6. Dust suction mechanism; 61. Air inlet; 62. Air outlet; 63. Air inlet filter plate; 64. Air outlet filter plate; 65. Fan. Detailed Implementation

[0024] 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.

[0025] Example 1

[0026] This embodiment provides a raw material crushing device for the production of rubber and plastic particles, such as... Figure 1-4 As shown, the crushing device includes a casing 1, a feed inlet 2 fixedly installed on the top of the casing 1 for feeding materials, and a discharge outlet 3 fixedly installed on the bottom of the casing 1 for discharging processed materials. Inside the casing 1, below the feed inlet 2, are two opposing roller cutters 4 for crushing materials. Inside the casing 1, below the two roller cutters 4, is a cleaning mechanism 5.

[0027] The cleaning mechanism 5 includes two motors 51 positioned below two roller cutters 4 on the outer wall of the housing 1. Each motor 51 has a rotating rod 52 fixedly connected to its output end. The two rotating rods 52 extend through the side wall of the housing 1 and into the inner cavity of the housing 1. A sleeve 53 is fitted on the outer wall of the part of the rotating rod 52 located in the inner cavity of the housing 1. Two three-way support plates 54 are positioned opposite each other at both ends of the sleeve 53. Three brush strips 55 are evenly arranged between the opposite surfaces of the two three-way support plates 54. A spring member 56 is installed at the bottom of each of the three brush strips 55 and is fixedly connected to the outer wall of the sleeve 53.

[0028] In use, cleaning is performed by the three brush strips 55 on the three-way support plate 54. After one brush strip 55 is worn out, the motor 51 is started to drive the rotating rod 52 to rotate. The rotating rod 52 drives the brush strip 55 on the sleeve 53 to rotate, thereby replacing the next set of brush strips 55. There is no need to open the chamber for replacement, which reduces the replacement frequency and improves production efficiency.

[0029] It should be noted that the rotation angle of the lever 52 is 120° each time.

[0030] The outer wall of the rotating rod 52 is fixedly connected to an alignment strip 57, and the inner wall of the sleeve 53 is provided with an alignment groove 58 that interlocks with the alignment strip 57. In use, the alignment groove 58 on the sleeve 53 is aligned with the alignment strip 57 on the rotating rod 52, and then the sleeve 53 is inserted into the rotating rod 52, which achieves a foolproof engagement effect and makes assembly more convenient.

[0031] Furthermore, the tee support plate 54 includes three support pieces 59 arranged in a ring array on the outer wall of the sleeve 53, and the three support pieces 59 are welded and fixed to the outer wall of the sleeve 53. During production, the support pieces 59 are directly fixed to the sleeve 53 by welding, which makes them less prone to displacement and breakage.

[0032] Furthermore, the support plate 59 has an inverted T-shaped groove 591 formed by the combination of vertical and horizontal grooves. The width of the vertical groove of the T-shaped groove 591 is smaller than the width of the horizontal groove. The width of the brush strip 55 is the same as the width of the horizontal groove of the T-shaped groove 591. The brush strip 55 has a locking groove 592 with the same width as the vertical groove of the T-shaped groove 591 near both ends.

[0033] During installation, the brush strip 55 is inserted into the horizontal groove and pressed against the spring 56. Once both ends of the brush strip 55 are engaged in the corresponding horizontal grooves, the brush strip 55 is released. The retaining groove 592 of the brush strip 55 will automatically engage in the vertical groove due to the elastic force of the spring 56, thus securing it. During disassembly, the brush strip 55 is pressed down, causing it to compress the spring 56, so that both ends of the brush strip 55 return to the position of the horizontal groove. The brush strip 55 can then be pulled out from the side. The disassembly and assembly are very convenient.

[0034] Specifically, two operation windows 531 for replacing brush strips 55 are opened on the outer wall of the chassis 1 opposite to the motor 51. Window plates 532 are hinged to both operation windows 531. Bearing components 533 for supporting rotating rods 52 are installed on the side of the two window plates 532 adjacent to the chassis 1.

[0035] In use, open the window plate 532 on the operation window 531, and then pull out the sleeve 53 directly through the operation window 531 to replace and maintain the brush strip 55. After replacement, insert the sleeve 53 back into the rotating rod 52 through the operation window 531. At this time, the bearing 533 supports the rotating rod 52 and improves its load-bearing capacity.

[0036] Example 2

[0037] Unlike Example 1, as Figure 1 , Figure 2 and Figure 4 As shown, the pulverizing device also includes a dust collection mechanism 6. The dust collection mechanism 6 includes an air inlet 61 and an air outlet 62 respectively opened on two sides of the outer wall of the casing 1 that are opposite to the motor 51 and the operation window 531. An air inlet filter plate 63 is installed on the air inlet 61, and an air outlet filter plate 64 is installed on the air outlet 62. A fan 65 is installed on the air inlet 61 outside the air inlet filter plate 63.

[0038] When in use, after the rubber and plastic granules are crushed by the roller cutter 4 and fall to the bottom of the machine box 1, the blower 65 is started. The blower 65 blows air, and the air force enters the cavity of the machine box 1 through the air inlet filter plate 63 to blow the crushed material. The separated dust is discharged through the air outlet filter plate 64 to complete the dust removal work.

[0039] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A raw material crushing device for producing rubber and plastic particles, comprising a casing (1) and a feed inlet (2) fixedly installed on the top of the casing (1) for feeding materials, and a discharge outlet (3) fixedly installed on the bottom of the casing (1) for discharging processed materials, wherein two roller cutters (4) for crushing materials are arranged opposite each other below the feed inlet (2) inside the casing (1), and a cleaning mechanism (5) is provided below the two roller cutters (4) inside the casing (1), characterized in that: The cleaning mechanism (5) includes two motors (51) positioned below two roller cutters (4) on the outer wall of the housing (1). A rotating rod (52) is fixedly connected to the output end of each of the two motors (51). The two rotating rods (52) extend through the side wall of the housing (1) into the inner cavity of the housing (1). A sleeve (53) is fitted on the outer wall of the part of the rotating rod (52) located in the inner cavity of the housing (1). Two three-way support plates (54) are positioned opposite each other at both ends of the sleeve (53). Three brush strips (55) are evenly arranged between the opposite surfaces of the two three-way support plates (54). A spring (56) is fixedly connected to the outer wall of the sleeve (53) at the bottom of each of the three brush strips (55).

2. The raw material crushing device for producing rubber and plastic particles according to claim 1, characterized in that: The outer side wall of the rotating rod (52) is fixedly connected with an alignment strip (57), and the inner side wall of the sleeve (53) is provided with an alignment groove (58) that is inserted into the alignment strip (57).

3. The raw material crushing device for producing rubber and plastic particles according to claim 1, characterized in that: The three-way support plate (54) includes three support pieces (59) arranged in a ring array on the outer wall of the sleeve (53), and the three support pieces (59) are welded and fixed to the outer wall of the sleeve (53).

4. The raw material crushing device for rubber and plastic particle production according to claim 3, characterized in that: The support plate (59) has an inverted T-shaped groove (591) formed by the combination of vertical groove and horizontal groove. The width of the vertical groove of the T-shaped groove (591) is smaller than the width of the horizontal groove. The width of the brush strip (55) is the same as the width of the horizontal groove of the T-shaped groove (591). The brush strip (55) has a locking groove (592) with the same width as the vertical groove of the T-shaped groove (591) near both ends.

5. The raw material crushing device for producing rubber and plastic particles according to claim 1, characterized in that: Two operation windows (531) for replacing brush strips (55) are provided on the outer wall of the chassis (1) opposite to the motor (51). Window plates (532) are hinged to the two operation windows (531). Bearing components (533) for supporting the rotating rod (52) are installed on the side of the two window plates (532) adjacent to the chassis (1).

6. The raw material crushing device for producing rubber and plastic particles according to claim 5, characterized in that: The pulverizing device also includes a dust collection mechanism (6), which includes an air inlet (61) and an air outlet (62) respectively opened on two sides of the outer wall of the casing (1) opposite to the motor (51) and the operation window (531). An air inlet filter plate (63) is installed on the air inlet (61), and an air outlet filter plate (64) is installed on the air outlet (62). A fan (65) is installed outside the air inlet (61) and the air inlet filter plate (63).

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