A tank-type on-line crushing apparatus for recycled plastics

Abstract

The utility model discloses a kind of tank type online crushing equipment of regenerated plastics, including crushing cavity, conveying cavity, crushing roller group, mesh sieve plate assembly and transmission mechanism;The crushing cavity is communicated with the conveying cavity;The crushing roller group is arranged in the crushing cavity;The mesh sieve plate assembly is slidably installed in the crushing cavity along vertical direction by elastic member, and it is located below the crushing roller group;The transmission mechanism is connected with the mesh sieve plate assembly and the transmission shaft of the crushing roller group, so that the crushing roller group can periodically vibrate in vertical direction when rotating and crushing, the mesh sieve plate assembly.The utility model is set above, can improve plastic crushing frequency and accelerate plastic particle discharge, reach the purpose of improving the quality of regenerated plastic crushing and having the function of preventing and discharging blockage.

Description

Technical Field

[0001] This utility model relates to the field of recycled plastics, and in particular to a tank-type online crushing device for recycled plastics. Background Technology

[0002] In the process of recycling plastics, crushing is the core step to reduce the volume of plastics and then granulate or reprocess them. Tank-type online crushing equipment is widely used in this field because it can achieve continuous feeding and crushing.

[0003] Current mainstream tank-type crushing equipment typically has a fixed screen plate installed inside the crushing chamber to screen plastic particles that meet the required particle size after crushing. However, in actual operation, certain drawbacks exist: If a fixed screen plate can only screen the plastic that passes through the crushing roller group for the first time during the fall, the unqualified coarse particles will directly accumulate on the screen plate and will be difficult to return to the crushing area below the crushing roller group. As a result, some plastic particles cannot meet the particle size requirements for subsequent processing due to insufficient crushing times, and need to be manually re-crushed, which increases the processing cost.

[0004] In addition, some plastics, after being crushed, are irregularly shaped or sticky, and are easily stuck in the screen holes of the screen plate. Fixed screen plates lack active cleaning capabilities. As the blockage worsens, the discharge speed of qualified particles will decrease significantly, and it may even be necessary to stop the machine for disassembly and cleaning, which seriously interrupts the continuity of online crushing and reduces overall production efficiency.

[0005] Therefore, a tank-type online crushing device for recycled plastics is needed to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a tank-type online crushing device for recycled plastics, which can improve the crushing quality while also having the function of preventing clogging during discharge.

[0007] To solve the above-mentioned technical problems, this utility model provides a tank-type online crushing equipment for recycled plastics, including a crushing chamber, a conveying chamber, a crushing roller group, a screen plate assembly, and a transmission mechanism; The crushing chamber is connected to the conveying chamber; The crushing roller assembly is disposed within the crushing chamber; The screen plate assembly is slidably installed in the crushing chamber in the vertical direction via an elastic element, and is located below the crushing roller assembly; The transmission mechanism is connected to the transmission shaft of the screen plate assembly and the crushing roller group, so that the screen plate assembly can periodically vibrate in the vertical direction when the crushing roller group is rotating and crushing.

[0008] Furthermore, the screen plate assembly includes a sliding frame and a screen. The sliding frame is slidably installed inside the crushing chamber via the elastic element, and limit posts are provided on both sides; One of the limiting posts passes through the crushing chamber and is connected to the transmission mechanism; The screen is located in the middle of the sliding frame.

[0009] Furthermore, the middle part of the sliding frame has a frustum-shaped cavity with an inner diameter decreasing from top to bottom; The screen is located at the bottom of the frustum-shaped cavity.

[0010] Furthermore, the transmission mechanism includes a rotary disk; The rotary disk is rotatably mounted on the outer wall of the crushing chamber and has a cam groove inside that connects to the limiting post extending to the outside of the crushing chamber.

[0011] Furthermore, the cam groove has an arc segment and a raised segment; When the limiting post moves from the protruding section to the arc section, the sliding frame moves downward in the vertical direction, causing the elastic element to be gradually compressed; When the limiting post moves from the arc segment to the protruding segment, the elastic element resets, causing the sliding frame to vibrate and move upward in the vertical direction.

[0012] Furthermore, when the limiting post is located in the arc segment, the height of the sliding frame remains unchanged.

[0013] Furthermore, the transmission mechanism also includes a pulley; The pulley is used to drive the drive shaft of the rotating disk and the crushing roller group, so that when the crushing roller group is running, it drives the rotating disk to rotate synchronously.

[0014] Furthermore, the crushing roller assembly includes two parallel crushing roller bodies, and the pulley is connected to the drive shaft of one of the crushing roller bodies.

[0015] Furthermore, a conveying auger assembly is provided inside the conveying cavity.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects: By incorporating a screen plate assembly with elastic elements that moves vertically within the crushing chamber, and a transmission mechanism that connects the screen plate assembly to the crushing roller assembly, the transmission mechanism enables the screen plate assembly to periodically vibrate vertically during the crushing process—specifically, as the crushing roller assembly rotates to crush the recycled plastic. This allows coarse plastic particles that do not meet the required particle size to be lifted upwards and re-engage with the crushing roller assembly under the vibration of the screen plate assembly, thereby increasing the crushing frequency and ensuring uniform and qualified plastic particle size. Furthermore, the periodic vibration of the screen plate assembly effectively prevents plastic particles from getting stuck in the screen holes, accelerating the passage of qualified plastic particles into the conveying chamber. This achieves the goals of improving the quality of recycled plastic crushing and preventing material discharge blockage. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the elastic element in the tank-type online crushing device in one embodiment of the present invention when it is in the reset state; Figure 2 This is a cross-sectional view of the elastic element in the tank-type online crushing device in one embodiment of the present invention when it is in a compressed state; Figure 3 This is a schematic diagram of the rotating disc in a tank-type online crushing device according to one embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a tank-type online crushing device in one embodiment of the present invention.

[0018] Reference numerals: 1. Crushing chamber; 2. Conveying chamber; 3. Crushing roller assembly; 4. Screen plate assembly; 41. Sliding frame; 42. Screen; 5. Transmission mechanism; 51. Rotary disk; 511. Cam groove; 52. Pulley; 6. Elastic element; 7. Conveying auger assembly. Detailed Implementation

[0019] The tank-type online crushing equipment for recycled plastics of this utility model will be described in more detail below with reference to the schematic diagrams, which illustrate preferred embodiments of this utility model. It should be understood that those skilled in the art can modify the utility model described herein while still achieving the advantageous effects of this utility model. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit this utility model.

[0020] Furthermore, based on the teachings of this specification, those skilled in the art can form new technical solutions through cross-combination of different implementation methods without creating technical contradictions. Such variations should all be considered to fall within the protection scope of this patent.

[0021] The present invention will be described in more detail below by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0022] like Figures 1 to 4 As shown in the figure, this utility model embodiment proposes a tank-type online crushing device for recycled plastics, including a crushing chamber 1, a conveying chamber 2, a crushing roller group 3, a screen plate assembly 4, and a transmission mechanism 5.

[0023] The crushing chamber 1 is connected to the conveying chamber 2 and is used to transfer the crushed plastic particles into the conveying chamber 2.

[0024] The crushing roller group 3 is disposed in the crushing chamber 1 and is used to crush the input plastic.

[0025] The screen plate assembly 4 is slidably installed in the crushing chamber 1 in a vertical direction via an elastic member 6, and is located below the crushing roller group 3. The screen plate assembly 4 is used to screen plastic particles, allowing qualified plastic particles to pass through the screen plate assembly 4 and enter the conveying chamber 2.

[0026] Furthermore, by connecting the screen plate assembly 4 with the elastic element 6, the screen plate assembly 4 can vibrate, thereby causing the coarse plastic particles that do not meet the particle size requirements to be lifted upwards and come into contact with the crushing roller group 3 again under the vibration of the screen plate assembly 4, thus completing multi-stage crushing. In addition, the vibration effect generated can also accelerate the rapid discharge of qualified particles.

[0027] The transmission mechanism 5 is connected to the transmission shaft of the screen plate assembly 4 and the crushing roller group 3, so that when the crushing roller group 3 is rotating and crushing, the screen plate assembly 4 can periodically vibrate in the vertical direction.

[0028] This device incorporates a screen plate assembly 4 connected to an elastic element 6, allowing it to move vertically within the crushing chamber 1, and a transmission mechanism 5 connecting the screen plate assembly 4 to the crushing roller assembly 3. The transmission mechanism 5 enables the screen plate assembly 4 to periodically vibrate vertically during the crushing process, i.e., as the crushing roller assembly 3 rotates to crush the recycled plastic. This allows coarse plastic particles that do not meet the required particle size to be lifted upwards and re-contact the crushing roller assembly 3 under the vibration of the screen plate assembly 4, thereby increasing the crushing frequency and ensuring uniform and qualified plastic particle size. Furthermore, the periodic vibration of the screen plate assembly 4 effectively prevents plastic particles from getting stuck in the screen holes, accelerating the passage of qualified plastic particles through the screen plate assembly 4 into the conveying chamber 2. This achieves the purpose of improving the crushing quality of recycled plastic and preventing material discharge blockage.

[0029] In this embodiment, a specific screen plate assembly 4 is also proposed to better achieve the screening of plastic particles and to cooperate with the transmission mechanism 5 to complete the vertical vibration.

[0030] Specifically, the screen plate assembly 4 includes a sliding frame 41 and a screen 42.

[0031] The sliding frame 41 is slidably installed inside the crushing chamber 1 via the elastic element 6, and limit posts are provided on both sides.

[0032] One of the limiting posts passes through the crushing chamber 1 and is connected to the transmission mechanism 5, so that the transmission mechanism 5 can transmit the force formed by the transmission shaft of the crushing roller group 3 to the sliding frame 41, thereby realizing the reciprocating vibration of the sliding frame 41 during the crushing process of the crushing roller group 3.

[0033] The screen 42 is disposed in the middle of the sliding frame 41.

[0034] It should be noted that the crushing chamber 1 is provided with slots to prevent interference when the limiting column moves in the vertical direction.

[0035] In addition, to prevent plastic particles from leaking out of the slots when the screen 42 vibrates, a folded mesh (i.e., a wave-shaped folded structure, not shown in the figure) can be installed in the slots. The folded mesh is installed between the top wall of the slot cavity and the limiting post to effectively prevent plastic particles from leaking out.

[0036] In other embodiments, the shape of the sliding frame 41 is further defined to guide the plastic particles to fall precisely into the screen 42 for screening.

[0037] Specifically, the sliding frame 41 has a frustum-shaped cavity with an inner diameter decreasing from top to bottom in the middle, and the screen 42 is disposed at the bottom end of the frustum-shaped cavity.

[0038] In a further embodiment, a specific transmission mechanism 5 is proposed to better control the vibration of the sliding frame 41 in the vertical direction.

[0039] Specifically, the transmission mechanism 5 includes a rotating disk 51.

[0040] The rotating disk 51 is rotatably mounted on the outer wall of the crushing chamber 1, and has a cam groove 511 inside that is connected to the limiting post extending to the outside of the crushing chamber 1.

[0041] The cam groove 511 has an arc segment and a raised segment.

[0042] This causes the sliding frame 41 to move downwards vertically when the limiting post moves from the protruding section to the arc section, gradually compressing the elastic element 6. Conversely, when the limiting post moves from the arc section to the protruding section, the elastic element 6 returns to its original position, causing the sliding frame 41 to vibrate upwards vertically. Furthermore, when the limiting post is located in the arc section, the height of the sliding frame 41 remains constant.

[0043] That is, by controlling the position of the limiting column in different positions of the cam groove 511, the sliding frame 41 drives the crushed plastic particles to vibrate up and down, so that the crushed plastic can come into contact with the crushing roller group 3 a second or multiple times, thereby improving the crushing quality and also having the function of preventing material discharge blockage.

[0044] In a further embodiment, the transmission mechanism 5 further includes a pulley 52.

[0045] The pulley 52 is used to drive the drive shaft of the rotating disk 51 and the crushing roller group 3, so that when the crushing roller group 3 is running, it synchronously drives the rotating disk 51 to rotate.

[0046] Specifically, the crushing roller group 3 includes two parallel crushing roller bodies, and the drive shafts of the two crushing roller bodies mesh with each other so that only one motor is needed to control the two crushing roller bodies.

[0047] The pulley 52 is connected to the drive shaft of one of the crushing roller bodies.

[0048] In other embodiments, a conveying auger assembly 7 is provided inside the conveying chamber 2 for discharging the crushed plastic particles.

[0049] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A tank-type online crushing device for recycled plastics, characterized in that, It includes a crushing chamber, a conveying chamber, a crushing roller assembly, a screen plate assembly, and a transmission mechanism; The crushing chamber is connected to the conveying chamber; The crushing roller assembly is disposed within the crushing chamber; The screen plate assembly is slidably installed in the crushing chamber in the vertical direction via an elastic element, and is located below the crushing roller assembly; The transmission mechanism is connected to the transmission shaft of the screen plate assembly and the crushing roller group, so that the screen plate assembly can periodically vibrate in the vertical direction when the crushing roller group is rotating and crushing.

2. The tank-type online crushing equipment for recycled plastics as described in claim 1, characterized in that, The screen plate assembly includes a sliding frame and a screen. The sliding frame is slidably installed inside the crushing chamber via the elastic element, and limit posts are provided on both sides; One of the limiting posts passes through the crushing chamber and is connected to the transmission mechanism; The screen is located in the middle of the sliding frame.

3. The tank-type online crushing equipment for recycled plastics as described in claim 2, characterized in that, The sliding frame has a frustum-shaped cavity in the middle with an inner diameter that decreases from top to bottom; The screen is located at the bottom of the frustum-shaped cavity.

4. The tank-type online crushing equipment for recycled plastics as described in claim 2, characterized in that, The transmission mechanism includes a rotating disk; The rotary disk is rotatably mounted on the outer wall of the crushing chamber and has a cam groove inside that connects to the limiting post extending to the outside of the crushing chamber.

5. The tank-type online crushing equipment for recycled plastics as described in claim 4, characterized in that, The cam groove has an arc segment and a raised segment; When the limiting post moves from the protruding section to the arc section, the sliding frame moves downward in the vertical direction, causing the elastic element to be gradually compressed; When the limiting post moves from the arc segment to the protruding segment, the elastic element resets, causing the sliding frame to vibrate and move upward in the vertical direction.

6. The tank-type online crushing equipment for recycled plastics as described in claim 5, characterized in that, When the limiting post is located in the arc segment, the height of the sliding frame remains unchanged.

7. The tank-type online crushing equipment for recycled plastics as described in claim 4, characterized in that, The transmission mechanism also includes a pulley; The pulley is used to drive the drive shaft of the rotating disk and the crushing roller group, so that when the crushing roller group is running, it drives the rotating disk to rotate synchronously.

8. The tank-type online crushing equipment for recycled plastics as described in claim 7, characterized in that, The crushing roller assembly includes two parallel crushing roller bodies, and the pulley is connected to the drive shaft of one of the crushing roller bodies.

9. The tank-type online crushing equipment for recycled plastics as described in any one of claims 1-8, characterized in that, A conveying auger assembly is installed inside the conveying cavity.

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