A plastic crushing and recycling device capable of cyclic crushing

Abstract

The present invention relates to a recycling device, and in particular, to a plastic crushing and recycling device capable of cyclic crushing. The device comprises a chassis, a feed hopper arranged above the chassis, and a discharge hopper arranged below the chassis, wherein two relatively rotatable moving knives are arranged in the chassis, and a material guide assembly is arranged on the periphery of one side of the moving knives; the material guide assembly is arranged around a half circle of the moving knives to form a filter cavity between the moving knives and the outer circle of the moving knives; the bottom of the material guide assembly has a first filter port for filtering materials; in the plastic crushing and recycling device capable of cyclic crushing, materials with a larger volume are intercepted in the filter cavity, and then the space of the filter cavity is adjusted so that the space of the filter cavity is smaller than the volume of the intercepted materials, so that the intercepted materials are sent to the top of the moving knife again under the action of the rotation of the moving knife, thereby avoiding the phenomenon of secondary crushing of materials that meet the requirements, and improving the accuracy of multiple crushing.

Description

Technical Field

[0001] The invention relates to a recycling device, in particular to a recycling and crushing plastic recycling device. Background Art

[0002] The sole includes the outer sole, the midsole and the heel. When making the sole, the common characteristics of the material should be wear resistance, water resistance, oil resistance, heat resistance, pressure resistance, impact resistance, good elasticity, easy to fit the foot shape, not easy to deform after shaping, heat preservation, easy to absorb moisture, etc. At the same time, it must be matched with the midsole to have a braking effect when walking and changing feet so as not to slip and easy to stop. There are many types of sole materials, which can be divided into natural sole materials and synthetic sole materials. Natural sole materials include natural sole leather, bamboo, wood, etc., and synthetic sole materials include rubber, plastic, rubber and plastic composite materials, recycled leather, elastic cardboard, etc.

[0003] After searching, among the related technologies, a Chinese patent with publication number CN108621342A discloses a plastic crusher, including a shell, a feed port is provided at the top of the shell, a discharge port is provided at the bottom of the shell, a group of crushing rollers are provided inside the shell, a rotating shaft is provided below the crushing rollers, and a motor is connected to the rotating shaft; a conical material dispersion cap is provided at the top of the rotating shaft, and a plurality of upwardly inclined crushing blade groups are fixed below the material dispersion cap, and the inclination angle of the crushing blade groups is not greater than; a plate screen is provided below the discharge port, the plate screen is connected to a vibrator, a material conveying device is provided below the plate screen, and the right end of the plate screen is connected to the inlet of the material circulation and transportation device, and the outlet of the material circulation and transportation device is connected to the feed port. The present invention has a simple structure, is easy to use, completely crushes the plastic, realizes cyclic crushing and material transportation, and realizes full automation of plastic crushing.

[0004] However, the above patent does not filter the material at the discharge port when feeding the material discharged from the discharge port into the feed port for the second time. This may easily lead to the material that originally meets the crushing requirements to undergo a second crushing, resulting in ineffective crushing and increasing the workload of the crusher. Summary of the invention

[0005] The object of the present invention is to provide a plastic crushing and recycling device capable of cyclic crushing to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, a plastic crushing and recycling device capable of cyclic crushing is provided, comprising a chassis, a feed hopper arranged above the chassis, and a discharge hopper arranged below the chassis, wherein two relatively rotatable moving knives are arranged in the chassis.

[0007] A material guide assembly is arranged on the outer periphery of one side of the movable knife; the material guide assembly is arranged around a half circle of the movable knife to form a filter cavity between the material guide assembly and the outer circle of the movable knife; the bottom of the material guide assembly has a first filter port for filtering the material; when the volume of the material is larger than the aperture of the first filter port, the first filter port intercepts the material in the filter cavity;

[0008] Under normal conditions, the distance between the material guide assembly and the moving knife is greater than the volume of the material to prevent the material from being directly carried away by the moving knife;

[0009] A guide assembly is provided below between the two moving knives for guiding the material guide assembly to move toward the moving knife; when there is material in the filter chamber, the guide assembly guides the material guide assembly to move toward the moving knife to reduce the distance between the material guide assembly and the moving knife, thereby forcing the material in the filter chamber to be driven by the rotating moving knife to the top of the moving knife to re-participate in the crushing work.

[0010] As a further improvement of the technical solution, the material guide assembly includes an upper ring plate and a lower ring plate both in an arc-shaped state, and the upper ring plate and the lower ring plate are both located between the movable knife and the side wall of the chassis;

[0011] The upper ring plate is coaxially arranged with the moving knife, and the radius of the upper ring plate is larger than the radius of the moving knife, so that a material guide cavity is formed between the inner wall of the upper ring plate and the outer ring of the moving knife;

[0012] The lower ring plate is fixedly arranged at the bottom end of the upper ring plate, and the bottom end of the lower ring plate is bent downward to form a receiving cavity between the inner wall of the lower ring plate and the outer ring of the moving knife;

[0013] The outer ring of the upper ring plate and the inner wall of the chassis are provided with a fixing plate for fixing the two.

[0014] As a further improvement of the technical solution, the space of the material guiding cavity is smaller than the volume of the material intercepted by the first filter port;

[0015] The space of the accommodating cavity at the bottom end of the lower ring plate gradually decreases toward the space at the top end of the lower ring plate.

[0016] As a further improvement of the present technical solution, the lower ring plate is made of an elastic material so that when guided by the guide assembly, the filter cavity can move toward the movable knife to reduce the space of the accommodating cavity.

[0017] As a further improvement of the technical solution, the first filter port is arranged at the bottom end of the lower ring plate.

[0018] As a further improvement of the technical solution, the guide assembly includes a guide plate fixedly arranged inside the chassis, the guide plate is located below between the two movable knives, and both ends of the guide plate are bent toward the bottom end of the lower ring plate to form an inverted "V" shape;

[0019] The bottom end of the lower ring plate rests on the outer wall of the guide plate;

[0020] The guide assembly also includes a driving assembly, which drives the lower ring plate by using the weight of the material, so that the lower ring plate moves toward the moving knife through the guidance of the side wall of the guide plate.

[0021] As a further improvement of the technical solution, the driving assembly includes a pull rope that slides longitudinally through the tops of both ends of the guide plate, the top end of the pull rope is fixedly connected to the bottom end of the lower ring plate, and the bottom end is fixedly connected to a slider;

[0022] The slider is longitudinally slidably arranged on the inner wall of the chassis, a material storage barrel is rotatably arranged between the two sliders, the weight of the bottom of the material storage barrel is greater than the weight of the top, and one side of the top of the material storage barrel expands outward to form a protrusion.

[0023] As a further improvement of the technical solution, a second filter port is provided on the side wall of the guide plate for filtering the material after being crushed by the moving knife.

[0024] As a further improvement of the technical solution, the outer wall of the guide plate is further provided with a plurality of shifting blocks, and the shifting blocks are located on the movement path of the bottom end of the lower ring plate.

[0025] As a further improvement of the technical solution, a plurality of cutters are fixedly provided on the inner wall of the lower ring plate, and when the lower ring plate moves toward the movable knife, the cutters are located in the recess of the movable knife.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. In the recyclable plastic crushing and recycling device, the larger material is intercepted in the filter chamber, and then the space of the filter chamber is adjusted to make the space of the filter chamber smaller than the volume of the intercepted material, so that the intercepted material is sent to the top of the moving knife again under the action of the rotation of the moving knife, thereby avoiding the phenomenon of secondary crushing of the material that meets the requirements and improving the accuracy of multiple crushing.

[0028] 2. In the recyclable plastic crushing and recycling device, when the bottom end of the lower ring plate is pulled by the pull rope, the bottom end of the lower ring plate will move toward the guide plate. When the pull rope passes through the shift block, the pull rope will vibrate through its own elasticity. Under the action of the vibration, the material on the top of the first filter port is shaken, thereby avoiding the material from being stuck at the first filter port, which affects the subsequent material from falling through the first filter port.

[0029] 3. In the cyclically crushable plastic crushing and recycling device, the lower ring plate can drive the cutter to approach the moving knife during the movement, so that the cutter can cut the material in the accommodating chamber, thereby achieving a crushing effect, which is equivalent to achieving three crushing of the material in one cycle, so as to improve the crushing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a structural schematic diagram of the movable knife of the present invention;

[0032] Figure 3 It is a schematic diagram of the internal structure of the chassis of the present invention;

[0033] Figure 4 It is a structural schematic diagram of the material guide assembly of the present invention;

[0034] Figure 5 It is a structural schematic diagram of the guide assembly of the present invention;

[0035] Figure 6 It is a structural schematic diagram of the driving assembly of the present invention;

[0036] Figure 7 For the present invention Figure 6 A schematic diagram of the structure at A;

[0037] Figure 8 It is a schematic structural diagram of a cutter of the present invention.

[0038] The meaning of each number in the figure is:

[0039] 100, chassis; 101, feed hopper; 102, discharge hopper; 103, motor; 104, moving knife; 105, gear plate;

[0040] 110, material guide assembly; 111, filter chamber; 112, upper ring plate; 113, lower ring plate; 114, material guide chamber; 115, accommodating chamber; 116, fixing plate; 117, first filter port;

[0041] 120, guide assembly; 121, guide plate; 122, second filter port; 123, shift block;

[0042] 130, driving assembly; 131, pull rope; 132, slider; 133, storage barrel; 134, protrusion;

[0043] 140. Cutting knife. DETAILED DESCRIPTION

[0044] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] See also Figure 1 and Figure 2 As shown, a plastic crushing and recycling device that can be circulated and crushed is provided, including a chassis 100, a feed hopper 101 arranged above the chassis 100, and a discharge hopper 102 arranged below the chassis 100, two main shafts are rotatably arranged in the chassis 100, and both ends of the two main shafts pass through both sides of the chassis 100, wherein the same end of the two main shafts is provided with a gear plate 105, and the two gear plates 105 are meshed with each other. Secondly, one end of one of the main shafts is connected to a motor 103 for power output. In this way, the motor 103 provides a driving force for the rotation of the main shaft, so that the main shaft starts to rotate under the action of the motor 103, and when one of the main shafts rotates, the gear plate 105 located at the end of the main shaft will transmit the power to the other main shaft, so that the two main shafts are in a state of relative rotation. In addition, the outer rings of the two main shafts are provided with movable knives 104. When the movable knives 104 on the two main shafts rotate with the main shafts, they crush the soles located above the movable knives 104. After the soles are crushed into materials, they are discharged through the motor 103 at the bottom.

[0048] But in order to re-crush some soles that do not meet the crushing requirements, such as Figure 3As shown: a material guide component 110 is arranged on the periphery of one side of the movable knife 104; the material guide component 110 is arranged around a half circle of the movable knife 104 to form a filter cavity 111 between the material guide component 110 and the outer circle of the movable knife 104; the bottom of the material guide component 110 has a first filter port 117 for filtering the material; when the volume of the material is larger than the aperture of the first filter port 117, the first filter port 117 intercepts the material in the filter cavity 111; in this way, under normal conditions, the distance between the material guide component 110 and the movable knife 104 is larger than the volume of the material to prevent the material from being directly carried away by the movable knife 104; at the same time. A guide assembly 120 is provided below between the two moving knives 104 for guiding the bottom end of the material guide assembly 110 to move toward the moving knife 104; when there is material in the filter chamber 111, the guide assembly 120 guides the material guide assembly 110 to move toward the moving knife 104 to reduce the distance between the material guide assembly 110 and the moving knife 104, thereby forcing the material in the filter chamber 111 to be driven by the rotating moving knife 104 to the top of the moving knife 104 to re-participate in the crushing work.

[0049] That is to say, the larger material is intercepted in the filter chamber 111, and then the space of the filter chamber 111 is adjusted to make the space of the filter chamber 111 smaller than the volume of the intercepted material. As a result, the intercepted material is sent to the top of the moving knife 104 again under the action of the rotation of the moving knife 104, thereby avoiding the secondary crushing of the material that meets the requirements and improving the accuracy of multiple crushing.

[0050] like Figure 4 As shown, in some embodiments, the material guide assembly 110 includes an upper ring plate 112 and a lower ring plate 113, both of which are in an arc-shaped state. The upper ring plate 112 and the lower ring plate 113 are both located between the movable knife 104 and the side wall of the chassis 100. The upper ring plate 112 is coaxially arranged with the movable knife 104, and the radius of the upper ring plate 112 is larger than the radius of the movable knife 104, so that a material guide cavity 114 is formed between the inner wall of the upper ring plate 112 and the outer circle of the movable knife 104, and the space of the material guide cavity 114 is smaller than the volume of the material intercepted by the first filter port 117; and the lower ring plate 113 is fixedly arranged at the bottom end of the upper ring plate 112, and the bottom end of the lower ring plate 113 is bent downward, so that a accommodating cavity 115 is formed between the inner wall of the lower ring plate 113 and the outer circle of the movable knife 104. At the same time, since the bottom end of the lower ring plate 113 is bent downward, the space of the accommodating cavity 115 at the bottom end of the lower ring plate 113 will gradually decrease toward the space at the top end of the lower ring plate 113; in addition, the outer ring of the upper ring plate 112 and the inner wall of the chassis 100 are provided with a fixing plate 116 that fixes the two together.

[0051] Furthermore, in the above, the lower ring plate 113 is preferably made of an elastic material, so that when guided by the guide assembly 120, the filter chamber 111 can move toward the movable knife 104, thereby reducing the space of the accommodating chamber 115. Figure 5In the embodiment, the first filter port 117 is disposed at the bottom end of the lower ring plate 113 .

[0052] like Figure 5 As shown, the guide assembly 120 includes a guide plate 121 fixedly arranged inside the chassis 100, the guide plate 121 is located below between the two moving knives 104, and both ends of the guide plate 121 are bent toward the bottom end of the lower ring plate 113 to form an inverted "V" shape; and the bottom end of the lower ring plate 113 is placed on the outer wall of the guide plate 121. The guide assembly 120 also includes a driving assembly 130, which drives the lower ring plate 113 by the weight of the material, so that the lower ring plate 113 moves toward the moving knife 104 through the guidance of the side wall of the guide plate 121.

[0053] Specifically, Figure 6 and Figure 7 As shown, the driving assembly 130 includes a pull rope 131 that slides longitudinally through the tops of both ends of the guide plate 121, the top of the pull rope 131 is fixedly connected to the bottom end of the lower ring plate 113, and the bottom end is fixedly connected to a slider 132, the slider 132 is longitudinally slidably arranged on the inner wall of the chassis 100, and a storage barrel 133 is rotatably arranged between the two sliders 132, the weight of the bottom of the storage barrel 133 is greater than the weight of the top, and one side of the top of the storage barrel 133 expands outward to form a protrusion 134.

[0054] It is worth noting that the hinge point between the material storage barrel 133 and the slider 132 is located in the lower middle of the side wall of the material storage barrel 133, so as to avoid the phenomenon that the material cannot press the material storage barrel 133 to rotate.

[0055] Working principle:

[0056] The shoe sole is placed on the top of the two moving knives 104. As the two moving knives 104 rotate relative to each other, the shoe sole will be rolled between the two moving knives 104, so that the shoe sole is crushed. The crushed materials are divided into two parts, one part is small-volume materials, and the other part is large-volume materials; both of these materials will fall on the top of the guide plate 121, and then slide through the inclined surface at the top of the guide plate 121 to the first filter port 117 at the bottom of the lower ring plate 113. At this time, the small-volume materials can directly fall through the first filter port 117, and the large-volume materials are intercepted at the top of the first filter port 117.

[0057] After the small-volume materials fall through the first filter port 117, they will fall into the storage barrel 133. As the materials in the storage barrel 133 gradually increase, the weight of the storage barrel 133 gradually increases, thereby driving the slider 132 downward under the action of gravity. The slider 132 moves downward to pull the bottom end of the lower ring plate 113 through the pull rope 131. At this time, the bottom end of the lower ring plate 113 moves toward the movable knife 104 through the guidance of the outer wall of the guide plate 121. During the movement, the space of the accommodating chamber 115 gradually shrinks, so that the materials intercepted by the first filter port 117 can contact the bottom of the movable knife 104. Since the movable knife 104 is in a rotating state, the materials in contact with the movable knife 104 will be driven by the movable knife 104 to rotate. In this way, the materials originally located at the bottom of the movable knife 104 can be rotated to the top of the movable knife 104, and then re-participate in the crushing process.

[0058] However, if the guided lower ring plate 113 cannot be reset in time, the material falling on the bottom of the lower ring plate 113 will not have time to fall through the first filter port 117 due to the reduced space of the accommodating chamber 115, and will be brought to the top again by the passive knife 104. Therefore, when the material in the storage barrel 133 gradually increases, since the protrusion 134 protrudes from one side of the storage barrel 133, when the material is piled on the top of the storage barrel 133, the material at the protrusion 134 exerts pressure on the storage barrel 133, thereby changing the weight distribution on both sides of the storage barrel 133. In this way, the material in the storage barrel 133 will press the storage barrel 133 toward the protrusion 134, causing the storage barrel 133 to rotate and discharge the material in the storage barrel 133. After the material is discharged, since the weight at the bottom of the storage barrel 133 is greater than the top, the storage barrel 133 will reset again. Therefore, when the material is poured out from the storage barrel 133, the weight of the storage barrel 133 is reduced, and the lower ring plate 113 can be reset by its own elasticity, so that the lower ring plate 113 also pulls the storage barrel 133 upward and resets through the pull rope 131.

[0059] In addition, in order to improve the filtration efficiency of the crushed materials, Figure 5 In the embodiment, a second filter port 122 is formed on the side wall of the guide plate 121 for filtering the material crushed by the movable blade 104 .

[0060] like Figure 4 As shown, in some other implementations, the outer wall of the guide plate 121 is further provided with a plurality of shifting blocks 123 , and the shifting blocks 123 are located on the movement path of the bottom end of the lower ring plate 113 .

[0061] In this way, when the bottom end of the lower ring plate 113 is pulled by the pull rope 131, the bottom end of the lower ring plate 113 will move toward the guide plate 121. When the pull rope 131 passes through the shift block 123, the pull rope 131 will vibrate due to its own elasticity. Under the action of the vibration, the material on the top of the first filter port 117 is shaken, thereby preventing the material from being stuck in the first filter port 117, resulting in the phenomenon that the subsequent material cannot fall through the first filter port 117.

[0062] Considering that after the moving blade 104 has been working for a period of time, the temperature thereof will rise due to friction, which may cause the plastic sole to soften and cause the moving blade 104 to get stuck. Figure 8 As shown, a plurality of cutters 140 are fixedly arranged on the inner wall of the lower ring plate 113, and when the lower ring plate 113 moves toward the movable knife 104, the cutters 140 are located at the recess of the movable knife 104. In this way, when the lower ring plate 113 moves toward the movable knife 104, the lower ring plate 113 will drive the cutters 140 together, and at this time, the cutters 140 will gradually approach the movable knife 104, thereby cutting the material at the movable knife 104.

[0063] That is to say, the lower ring plate 113 can drive the cutter 140 to approach the movable knife 104 during the movement, so that the cutter 140 can cut the material in the accommodating chamber 115, thereby achieving a crushing effect, which is equivalent to achieving three crushing of the material in one cycle, so as to improve the crushing efficiency.

[0064] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A plastic crushing and recycling device capable of cyclic crushing, comprising a housing (100), a feed hopper (101) arranged above the housing (100), and a discharge hopper (102) arranged below the housing (100), wherein two relatively rotatable moving knives (104) are arranged in the housing (100), characterized in that: A material guide component (110) is arranged on the outer periphery of one side of the movable blade (104); the material guide component (110) is arranged around a half circle of the movable blade (104) to form a filter cavity (111) between the material guide component (110) and the outer circle of the movable blade (104); the bottom of the material guide component (110) has a first filter port (117) for filtering the material; when the volume of the material is greater than the aperture of the first filter port (117), the first filter port (117) intercepts the material in the filter cavity (111); Under normal conditions, the distance between the material guiding component (110) and the moving knife (104) is greater than the volume of the material, so as to prevent the material from being directly carried away by the moving knife (104); A guide assembly (120) for guiding the material guide assembly (110) to move toward the moving blade (104) is provided below the two moving blades (104); when material exists in the filter cavity (111), the guide assembly (120) guides the material guide assembly (110) to move toward the moving blade (104) to reduce the distance between the material guide assembly (110) and the moving blade (104), thereby forcing the material in the filter cavity (111) to be driven by the rotating moving blade (104) to the top of the moving blade (104) to participate in the crushing work again; The material guide assembly (110) comprises an upper ring plate (112) and a lower ring plate (113) both in an arc-shaped state, and the upper ring plate (112) and the lower ring plate (113) are both located between the movable knife (104) and the side wall of the chassis (100); The upper ring plate (112) and the movable knife (104) are coaxially arranged, and the radius of the upper ring plate (112) is greater than the radius of the movable knife (104), so that a material guide cavity (114) is formed between the inner wall of the upper ring plate (112) and the outer ring of the movable knife (104); The lower ring plate (113) is fixedly arranged at the bottom end of the upper ring plate (112), and the bottom end of the lower ring plate (113) is bent downward so that a receiving cavity (115) is formed between the inner wall of the lower ring plate (113) and the outer ring of the movable knife (104); The outer ring of the upper ring plate (112) and the inner wall of the chassis (100) are provided with a fixing plate (116) for fixing the two together; The lower ring plate (113) is made of an elastic material so that when guided by the guide assembly (120), the filter cavity (111) can move toward the movable knife (104) to reduce the space of the accommodating cavity (115); The guide assembly (120) comprises a guide plate (121) fixedly arranged inside the chassis (100), the guide plate (121) being located below between the two movable knives (104), and both ends of the guide plate (121) being bent toward the bottom end of the downward ring plate (113) to form an inverted "V" shape; The bottom end of the lower ring plate (113) rests on the outer wall of the guide plate (121); The guide assembly (120) further comprises a driving assembly (130), wherein the driving assembly (130) drives the lower ring plate (113) by utilizing the weight of the material, so that the lower ring plate (113) moves toward the movable knife (104) through the guidance of the side wall of the guide plate (121); The driving assembly (130) comprises a pull rope (131) which longitudinally slides through the tops of both ends of the guide plate (121), the top end of the pull rope (131) being fixedly connected to the bottom end of the lower ring plate (113), and the bottom end being fixedly connected to a slider (132); The slider (132) is longitudinally slidably arranged on the inner wall of the chassis (100), a material storage barrel (133) is rotatably arranged between the two sliders (132), the weight of the bottom of the material storage barrel (133) is greater than the weight of the top, and one side of the top of the material storage barrel (133) expands outwards to form a protrusion (134); The outer wall of the guide plate (121) is also provided with a plurality of shifting blocks (123), and the shifting blocks (123) are located on the movement path of the bottom end of the lower ring plate (113).

2. The cyclically crushable plastic crushing and recycling device according to claim 1 is characterized in that: The space of the material guiding cavity (114) is smaller than the volume of the material intercepted by the first filter port (117); The space of the accommodating cavity (115) located at the bottom end of the lower ring plate (113) gradually decreases towards the space at the top end of the lower ring plate (113).

3. The cyclically crushable plastic crushing and recycling device according to claim 1 is characterized in that: The first filter port (117) is arranged at the bottom end of the lower ring plate (113).

4. The cyclically crushable plastic crushing and recycling device according to claim 1 is characterized in that: The side wall of the guide plate (121) is provided with a second filter port (122) for filtering the material crushed by the movable knife (104).

5. The cyclically crushable plastic crushing and recycling device according to claim 1 is characterized in that: A plurality of cutters (140) are fixedly arranged on the inner wall of the lower ring plate (113); when the lower ring plate (113) moves toward the movable knife (104), the cutters (140) are located in the recessed position of the movable knife (104).

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