A kind of waste plastic pipe processing equipment

Abstract

The invention discloses a waste plastic pipe processing device, which relates to the technical field of waste plastic processing, including: a transport and screening mechanism comprises a first screening zone and a second screening zone, the spacing between roller elements in the first screening zone and the second screening zone is different; the spacing between two adjacent roller elements is used to filter waste plastic pipes of different diameters; a crushing bin is placed at one end of the transport and screening mechanism, and a crushing mechanism is arranged inside, and the waste plastic transmitted by the transport and screening mechanism is crushed by the crushing mechanism; a plurality of crushing mechanisms are arranged inside the crushing bin, and each crushing mechanism processes waste plastic pipes of different diameters; the beneficial effect of the invention is that the transport and screening mechanism is used to classify the waste pipes according to the diameters of the pipes, and the pipes of different diameters are transported to different crushing processes to avoid repeated crushing of the pipes. At the same time, according to the conditions of pipes of different diameters, the screening requirements of the transport and screening mechanism for the pipes can be adjusted, and the crushing process of the pipes can be flexibly adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of plastic processing, in particular to a waste plastic pipe processing device. Background Art

[0002] Waste plastics are a general term for plastics that have been used in civil and industrial applications and are eventually eliminated or replaced. They decay over a long period of time and often cause large-scale pollution. In order to facilitate the recycling of waste plastics, it is necessary to use a crushing device to crush the waste plastic pipes.

[0003] When crushing discarded plastic pipes, the usual approach is to crush all the pipes together. However, due to the different diameters of the pipes, the crushing procedures for pipes of different diameters are also different. Usually, plastic pipes with larger diameters have to be crushed multiple times before they can reach a recyclable volume, while pipes with smaller diameters have fewer procedures. If they are crushed together, this will lead to a waste of resources, and pipes with small diameters will undergo repeated crushing. Summary of the invention

[0004] Some simplifications or omissions may be made in this section and the abstract and title of the present application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0006] Therefore, the object of the present invention is to provide a waste plastic pipe processing device, which solves the problem that when the pipe is broken, centralized processing easily causes waste of resources.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a waste plastic pipe processing device, comprising a transport screening mechanism, wherein the transport screening mechanism comprises a first screening section and a second screening section, wherein the spacing between rollers in the first screening section and the second screening section is different; and the spacing between two adjacent rollers is used to filter waste plastic pipes of different diameters;

[0008] A crushing bin is disposed at one end of the transport and screening mechanism, and is provided with a crushing mechanism inside, through which the waste plastics conveyed by the transport and screening mechanism are crushed; a plurality of crushing mechanisms are arranged inside the crushing bin, and each crushing mechanism processes waste plastic pipes of different diameters;

[0009] The first transfer bin and the second transfer bin are arranged below the transport and screening mechanism, and serve as transport channels for the pipes filtered by the first screening area and the second screening area respectively. The first transfer bin and the second transfer bin are connected to the inside of the crushing bin, and transport waste plastic pipes of different sizes to the crushing mechanism respectively.

[0010] As a preferred solution of the waste plastic pipe processing equipment described in the present invention, the transport screening mechanism is in an inclined state, and both ends of the first screening area and the second screening area are provided with transmission racks, one end of the transmission rack is driven by a motor, and the transmission rack is used to drive the roller to roll.

[0011] As a preferred solution of the waste plastic pipe processing equipment of the present invention, the roller member comprises a movable arc plate, the movable arc plate is placed on the outside of the cylinder core, both ends of the movable arc plate are provided with movable rods, one end of the movable rod is provided with a movable head, the movable head is placed in a movable groove on the adjusting head, the adjusting head is connected to the movable tooth head through a one-way damping bearing, and an electromagnetic connector is provided at the connection between the movable tooth head and the one-way damping bearing;

[0012] The movable tooth head is meshed with the transmission rack.

[0013] As a preferred solution of the waste plastic pipe processing equipment described in the present invention, the crushing bin is a long cylinder that passes through from top to bottom, and a feeding port is provided on the side of the long cylinder. The two feeding ports are respectively connected to the first transfer bin and the crushing bin and the second transfer bin and the crushing bin.

[0014] As a preferred solution of the waste plastic pipe processing equipment of the present invention, the first tightening member and the second tightening member are both placed outside the crushing bin, the first transfer bin and the second transfer bin, and the specifications of the two are consistent;

[0015] The second tightening member is connected to the one-way damping bearing through the first roller. The first roller is provided with a busbar, which is connected to the sub-line after passing around the second roller. The sub-line is connected to the contraction member in the crushing mechanism after passing around the third roller.

[0016] As a preferred embodiment of the waste plastic pipe processing equipment described in the present invention, the crushing mechanism includes a crushing roller, a plurality of adjusting parts arranged in an annular pattern are provided on the crushing roller, a first arc-shaped protrusion is provided on one side of the crushing roller, a second arc-shaped protrusion is provided on the other side, two symmetrical hook plates are provided below the crushing roller, a first fixed knife group is provided on the inner side of the upper end of the first arc-shaped protrusion, a second fixed knife group is provided on the inner side of the lower end of the second arc-shaped protrusion, the contraction part is provided at the lower end port of the hook plate, and a gap is provided between the hook plates.

[0017] As a preferred solution of the waste plastic pipe processing equipment described in the present invention, the crushing roller includes a movable knife group, and a plurality of knives are distributed in a circular array on the movable knife group, one side of the knife is a knife head, and the other side is a knife back, and the adjustment part is provided on one side of the knife back.

[0018] As a preferred solution of the waste plastic pipe processing equipment of the present invention, the adjusting member is placed in a fan-shaped groove, and the adjusting member includes an adjusting plate, one end of the adjusting plate is provided with a movable shaft, and the movable shaft is movably connected to the crushing roller.

[0019] As a preferred solution of the waste plastic pipe processing equipment described in the present invention, wherein: the shrinking part includes a shrinking plate, the shrinking plate is movably connected to the hook plate through a limiting head on the bottom surface, an extrusion strip is provided on the inner side of the shrinking plate, the extrusion strip is movably connected to the hook plate through a limiting strip on one side thereof, and one end of the extrusion strip is connected to a pull rope.

[0020] As a preferred solution of the waste plastic pipe processing equipment of the present invention, wherein: the sub-line is connected to the pull rope.

[0021] The beneficial effects of the present invention are as follows: the present invention utilizes a transport and screening mechanism to transport and classify discarded pipes according to their diameters; pipes of different diameters are transported to different crushing processes; pipes with larger diameters are crushed multiple times, and pipes with smaller diameters are crushed a smaller number of times, thereby making full use of resources and avoiding repeated crushing of pipes; at the same time, according to the distribution of pipes of different diameters in a batch, the screening requirements of the transport and screening mechanism for the pipes can also be adjusted, thereby flexibly adjusting the crushing process and effect of the pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0023] Figure 1 It is the overall schematic diagram of the waste plastic pipe processing equipment;

[0024] Figure 2 This is a schematic diagram of the internal structure of waste plastic pipe processing equipment;

[0025] Figure 3 This is a schematic diagram of the crushing mechanism of the waste plastic pipe processing equipment;

[0026] Figure 4 This is a schematic diagram of the crushing mechanism of the waste plastic pipe processing equipment;

[0027] Figure 5 A schematic diagram of the shrinking parts of the waste plastic pipe processing equipment;

[0028] Figure 6 A schematic diagram of a roller component of a waste plastic pipe processing device;

[0029] Figure 7 Schematic diagram of the disassembly of the roller parts of the waste plastic pipe processing equipment. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0033] Example 1

[0034] Reference Figure 1 to Figure 7 , which is the first embodiment of the present invention, and provides a waste plastic pipe processing device, which includes a transport screening mechanism 100, wherein the transport screening mechanism 100 includes a first screening section 101 and a second screening section 102, and the spacing between rollers 104 in the first screening section 101 and the second screening section 102 is different; the spacing between two adjacent rollers 104 is used to filter waste plastic pipes of different diameters;

[0035] The crushing bin 200 is placed at one end of the transport and screening mechanism 100, and is provided with a crushing mechanism 700 inside, and the waste plastics conveyed by the transport and screening mechanism 100 are crushed by the crushing mechanism 700; a plurality of crushing mechanisms 700 are arranged inside the crushing bin 200, and each crushing mechanism 700 processes waste plastic pipes of different diameters;

[0036] The first transfer bin 300 and the second transfer bin 400 are arranged below the transport screening mechanism 100, and serve as transport channels for the pipes filtered by the first screening area 101 and the second screening area 102, respectively. The first transfer bin 300 and the second transfer bin 400 are connected to the inside of the crushing bin 200, and transport waste plastic pipes of different sizes to the crushing mechanism 700, respectively.

[0037] The transport screening mechanism 100 is in an inclined state, and both ends of the first screening section 101 and the second screening section 102 are provided with transmission racks 103 , one end of the transmission rack 103 is driven by a motor, and the transmission rack 103 is used to drive the roller 104 to roll.

[0038] The roller member 104 comprises a movable arc plate 104a, which is placed on the outside of the cylinder core 104g. Both ends of the movable arc plate 104a are provided with movable rods 104b. One end of the movable rod 104b is provided with a movable head 104j. The movable head 104j is placed in a movable groove 104h on the adjustment head 104c. The adjustment head 104c is connected to the movable tooth head 104d through a one-way damping bearing 104e. An electromagnetic connection head 104f is provided at the connection between the movable tooth head 104d and the one-way damping bearing 104e.

[0039] The movable tooth head 104 d is meshed with the transmission rack 103 .

[0040] Preferably, the one-way damping bearing 104e connects the movable tooth head 104d and the cylinder core 104g, and the cylinder core 104g constrains the movable rod 104b, so that the movable rod 104b can translate along the inner diameter direction of the cylinder core 104g.

[0041] Preferably, when the transmission rack 103 drives the movable tooth head 104d to rotate counterclockwise, due to the one-way damping bearing 104e, the movable tooth head 104d does not drive the adjusting head 104c to rotate, and the movable tooth head 104d drives the tube core 104g to rotate through the one-way damping bearing 104e, and the tube core 104g drives the movable arc plate 104a to rotate counterclockwise; when the transmission rack 103 drives the movable tooth head 104d to rotate clockwise, the movable tooth head 104d drives the adjusting head 104c to rotate through the one-way damping bearing 104e, and the adjusting head 104c drives the movable rod 104b to translate, and the movable arc plate 104a expands or contracts.

[0042] It should be noted that when the movable arc plates 104a are in the expanded state, the distance between two movable arc plates 104a on the same roller member 104 in the first screening section 101 cannot be greater than the distance between two roller members 104 in the second screening section 102, that is, the minimum pipeline filtration diameter.

[0043] Preferably, when it is necessary to adjust the spacing between the roller members 104, that is, to control the expansion of the movable arc plate 104a, there are two situations at this time. The first is that the variation range of the roller members 104 in the first screening area 101 and the second screening area 102 is consistent. At this time, the electromagnetic connector 104f fixes the one-way damping bearing 104e and the movable tooth head 104d, and then uniformly adjusts them through the transmission rack 103; if the variation range of the roller members 104 in the first screening area 101 and the second screening area 102 is inconsistent, at this time, when it is necessary to adjust which roller member 104, for example, adjust the roller member 104 in the first screening area 101. 4, the electromagnetic connector 104f in the first screening section 101 fixes the one-way damping bearing 104e and the movable tooth head 104d, and the electromagnetic connector 104f in the second screening section 102 is separated from the one-way damping bearing 104e and the movable tooth head 104d, so that the one-way damping bearing 104e in the second screening section 102 no longer changes the condition of the movable arc plate 104a, and then adjusts it through the transmission rack 103; therefore, the condition of the roller member 104 in the first screening section 101 or the second screening section 102 can be arbitrarily adjusted in the transport screening mechanism 100, that is, the distance between the two roller members 104 is changed.

[0044] The crushing bin 200 is a long cylinder 201 that passes through from top to bottom. A feeding port 202 is provided on the side of the long cylinder 201. The two feeding ports 202 are connected to the first transfer bin 300 and the crushing bin 200 and to the second transfer bin 400 and the crushing bin 200 respectively.

[0045] The first tightening member 500 and the second tightening member 600 are both placed outside the crushing bin 200, the first transfer bin 300 and the second transfer bin 400, and the specifications of the two are consistent;

[0046] Preferably, taking the second tightening member 600 as an example, when the movable arc plate 104a in the first screening area 101 expands, that is, the transmission rack 103 drives the movable tooth head 104d to rotate clockwise, the one-way damping bearing 104e rotates, and at the same time, the one-way damping bearing 104e drives the first roller 601 to rotate, the first roller 601 tightens the busbar 602, and the busbar 602 tightens the sub-line 604, that is, the pull rope 706d is pulled, and the extrusion strip 706b will push the contraction plate 706a to reduce the distance between the two hook plates 705;

[0047] It should be noted that the hook plates 705 are only provided below the topmost and middle crushing mechanisms 700 , wherein the spacing of the topmost hook plates 705 is consistent with the spacing of the two roller members 104 in the first screening section 101 , and the spacing of the middle hook plates 705 is consistent with the spacing of the two roller members 104 in the second screening section 102 .

[0048] The second tightening member 600 is connected to the one-way damping bearing 104e through the first roller 601. The first roller 601 is provided with a busbar 602. The busbar 602 passes around the second roller 603 and is connected to the sub-line 604. The sub-line 604 passes around the third roller 605 and is connected to the contraction member 706 in the crushing mechanism 700.

[0049] The crushing mechanism 700 includes a crushing roller 701, on which a plurality of adjusting members 707 arranged in an annular arrangement are provided. A first arc-shaped protrusion 702 is provided on one side of the crushing roller 701, and a second arc-shaped protrusion 704 is provided on the other side. Two symmetrical hook plates 705 are provided below the crushing roller 701. A first fixed knife group 708 is provided on the inner side of the upper end of the first arc-shaped protrusion 702, and a second fixed knife group 703 is provided on the inner side of the lower end of the second arc-shaped protrusion 704. A contraction member 706 is provided at the lower end port of the hook plate 705, and there is a gap between the hook plates 705.

[0050] The crushing roller 701 comprises a movable knife group 701a, on which a plurality of knives 701b are distributed in a circular array. One side of the knife 701b is a knife head 701c, and the other side is a knife back 701d. An adjusting member 707 is provided on one side of the knife back 701d.

[0051] Preferably, the cutter 701b and the first fixed cutter group 708 and the second fixed cutter group 703 are all staggered structures, which can easily cut the pipe. At the same time, during the rotation of the crushing roller 701, the crushing roller 701 will drive the pipe at the back of the knife 701d and the first arc-shaped protrusion 702 and the second arc-shaped protrusion 704 to crush, which will help the pipe cutting to a certain extent.

[0052] After being processed by the crushing mechanism 700, the pipe will be retained at the hook plate 705 first. If the cut pipe can pass through the gap between the two hook plates 705, the pipe size meets the standard and will be crushed and cut by another crushing mechanism 700 below; otherwise, the pipe fragments will be retained on the hook plate 705, followed by the knife back 701d and carried back to the first fixed knife group 708 and the second fixed knife group 703, and crushed again until the pipe is cut into the target size.

[0053] Preferably, three crushing mechanisms 700 are provided, and the three crushing mechanisms 700 are vertically distributed inside the crushing bin 200, wherein the angle between the adjustment plate 707a in the uppermost crushing mechanism 700 and the crushing roller 701 is the smallest, that is, the groove on the side of the blade back 701d can accommodate the largest diameter of the discarded plastic pipe; the diameter of the pipe that can be accommodated at the adjustment plate 707a in the three crushing mechanisms 700 decreases from top to bottom.

[0054] The adjusting member 707 is placed in a fan-shaped groove. The adjusting member 707 includes an adjusting plate 707 a . A movable shaft 707 b is provided at one end of the adjusting plate 707 a . The movable shaft 707 b is movably connected to the crushing roller 701 .

[0055] The retracting member 706 includes a retracting plate 706a, which is movably connected to the hook plate 705 through a limit head 706e on the bottom surface. An extrusion strip 706b is provided on the inner side of the retracting plate 706a. The extrusion strip 706b is movably connected to the hook plate 705 through a limit strip 706c on one side thereof, and one end of the extrusion strip 706b is connected to a pull rope 706d.

[0056] Preferably, part of the pipes filtered and classified by the transport screening mechanism 100 will be transported from the first transfer bin 300 and the second transfer bin 400 to the inside of the crushing bin 200 respectively, and then crushed by the crushing mechanism 700. It should be noted that the pipes at the first transfer bin 300 will be crushed twice by the crushing mechanism 700, and the pipes at the second transfer bin 400 will be crushed only once; since the bottom crushing mechanism 700 has to crush the pipe fragments coming down from above and the pipes transported from the first transfer bin 300, the crushing power and speed of the bottom crushing mechanism 700 are the largest. Similarly, the processing speed of the three crushing mechanisms 700 from top to bottom is accelerated at once;

[0057] Preferably, the three crushing mechanisms 700 are respectively connected to a driving motor, and the three motors have different powers.

[0058] The sub-line 604 is connected to the pull rope 706d.

[0059] When in use, the plastic pipes are uniformly put on the transport and screening mechanism 100. After that, under the action of the transport and screening mechanism 100, the discarded pipes are divided into three batches. The pipes with the largest diameter will be put in from the top of the crushing bin 200 and undergo three crushing and cutting. The medium-sized pipes will pass through the first transfer bin 300 and enter the middle of the crushing bin 200 and undergo crushing and cutting on both sides. The smallest pipes will pass through the second transfer bin 400 and enter the lower end of the crushing bin 200 and undergo one crushing and cutting. Finally, the pipes of the three diameters will become qualified plastic particles after appropriate cutting and crushing, waiting for subsequent processing.

[0060] The device can flexibly change the parameters of the transport screening mechanism 100 according to the specific parameters of the input pipeline, so as to achieve the effect of cutting and crushing pipelines with various diameters.

[0061] In summary, the equipment utilizes the transport and screening mechanism 100 to transport and classify discarded pipes according to their diameters. Pipes of different diameters are transported to different crushing processes. Pipes with larger diameters are crushed multiple times, and pipes with smaller diameters are crushed less times, so as to make full use of resources and avoid repeated crushing of pipes. At the same time, according to the distribution of pipes of different diameters in the batch, the screening requirements of the transport and screening mechanism 100 for the pipes can be adjusted, so as to flexibly adjust the crushing process and effect of the pipes.

[0062] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0063] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0064] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0065] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A waste plastic pipe processing equipment, characterized by: include, A transport screening mechanism (100), wherein the transport screening mechanism (100) comprises a first screening section (101) and a second screening section (102), wherein the spacing between roller elements (104) in the first screening section (101) and the second screening section (102) is different; and the spacing between two adjacent roller elements (104) is used for filtering waste plastic pipes of different diameters; A crushing bin (200) is disposed at one end of the transport and screening mechanism (100), and is provided with a crushing mechanism (700) therein, and the waste plastics conveyed by the transport and screening mechanism (100) are crushed by the crushing mechanism (700); a plurality of crushing mechanisms (700) are arranged inside the crushing bin (200), and each crushing mechanism (700) processes waste plastic pipes of different diameters; The first transfer bin (300) and the second transfer bin (400) are arranged below the transport screening mechanism (100) and serve as transport channels for the pipes filtered by the first screening section (101) and the second screening section (102), respectively. The first transfer bin (300) and the second transfer bin (400) are connected to the interior of the crushing bin (200) and transport waste plastic pipes of different sizes to the crushing mechanism (700); The transport screening mechanism (100) is in an inclined state, and transmission racks (103) are provided at both ends of the first screening section (101) and the second screening section (102), and one end of the transmission rack (103) is driven by a motor, and the transmission rack (103) drives the roller member (104) to roll; The roller component (104) comprises a movable arc plate (104a), the movable arc plate (104a) is placed on the outside of the cylinder core (104g), both ends of the movable arc plate (104a) are provided with movable rods (104b), one end of the movable rod (104b) is provided with a movable head (104j), the movable head (104j) is placed in a movable groove (104h) on the adjustment head (104c), the adjustment head (104c) is connected to the movable tooth head (104d) via a one-way damping bearing (104e), and an electromagnetic connection head (104f) is provided at the connection between the movable tooth head (104d) and the one-way damping bearing (104e); The movable tooth head (104d) meshes with the transmission rack (103); The crushing bin (200) is a long tube (201) that is connected from top to bottom, and a feeding port (202) is provided on the side of the long tube (201), and the two feeding ports (202) are respectively connected to the first transfer bin (300) and the crushing bin (200) and the second transfer bin (400) and the crushing bin (200); The first tightening member (500) and the second tightening member (600) are both placed outside the crushing bin (200), the first transfer bin (300) and the second transfer bin (400), and the specifications of the two are consistent; The second tightening member (600) is connected to the one-way damping bearing (104e) via a first roller (601); a main line (602) is provided on the first roller (601); the main line (602) is connected to a sub-line (604) after bypassing the second roller (603); the sub-line (604) is connected to a contraction member (706) in the crushing mechanism (700) after bypassing the third roller (605); The crushing mechanism (700) comprises a crushing roller (701), the crushing roller (701) is provided with a plurality of adjusting members (707) arranged in an annular array, one side of the crushing roller (701) is provided with a first arc-shaped protrusion (702), and the other side is provided with a second arc-shaped protrusion (704), two symmetrical hook plates (705) are provided below the crushing roller (701), a first fixed knife group (708) is provided on the inner side of the upper end of the first arc-shaped protrusion (702), a second fixed knife group (703) is provided on the inner side of the lower end of the second arc-shaped protrusion (704), the contraction member (706) is provided at the lower end port of the hook plate (705), and there is a gap between the hook plates (705); The crushing roller (701) comprises a movable knife group (701a), a plurality of knives (701b) are distributed in a ring array on the movable knife group (701a), one side of the knife (701b) is a knife head (701c), and the other side is a knife back (701d), and one side of the knife back (701d) is provided with an adjustment member (707); The adjusting member (707) is placed in a fan-shaped groove, and the adjusting member (707) comprises an adjusting plate (707a). A movable shaft (707b) is provided at one end of the adjusting plate (707a), and the movable shaft (707b) is movably connected to the crushing roller (701); The retracting member (706) comprises a retracting plate (706a), the retracting plate (706a) being movably connected to the hook plate (705) via a limiting head (706e) on the bottom surface, an extrusion strip (706b) being provided on the inner side of the retracting plate (706a), the extrusion strip (706b) being movably connected to the hook plate (705) via a limiting strip (706c) on one side thereof, and one end of the extrusion strip (706b) being connected to a pull rope (706d).

2. The waste plastic pipe processing equipment according to claim 1, characterized in that: The sub-line (604) is connected to the pull rope (706d).

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