Pipeline solid waste grading crusher and material recovery method thereof

Abstract

The invention relates to the technical field of pipeline solid waste material treatment, in particular to a pipeline solid waste grading crusher and a material recycling method thereof.The pipeline solid waste grading crusher comprises an outer shell with the bottom face provided with a supporting base, a first feeding frame and a second feeding frame, and the first feeding frame and the second feeding frame are sequentially installed above the outer shell from front to back; and a first-stage crushing assembly and a second-stage crushing assembly are sequentially installed in the outer shell from top to bottom, a moving ring is connected to the interior of the left side of a second feeding frame through a connecting control mechanism, a cross frame body is installed in the moving ring, and cutter assemblies used for preliminary slitting are symmetrically fixed to the right side face of the cross frame body. According to the pipeline solid waste grading crusher and the material recycling method thereof, aged or damaged hard plastic pipelines can be conveniently and preliminarily cleaned, and the situation that the crushing efficiency and quality are affected by impurities such as sludge is avoided, so that the crushing and recycling efficiency and quality of the plastic pipelines can be improved, and plastic particles obtained after crushing are conveniently recycled and reused in the later period.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline solid waste material treatment, and specifically to a pipeline solid waste grading crusher and a material recycling method thereof. Background Art

[0002] During the processing and later use of plastic pipelines, pipeline solid waste materials will be generated, such as waste materials in the extruder, truncated pipe residues, aged and damaged pipelines, etc. Since the degradation period of these plastic pipeline solid waste materials is relatively long and they will pollute the environment, a grading crusher is needed to grade and crush these plastic pipeline solid waste materials for later recycling and reuse. For example, in the prior art, the patent with the publication number "CN107433698B" and the patent name "A waste plastic crusher" discloses that waste plastics enter the cooling chamber, the embrittlement temperature of the waste plastics is input into the temperature setter, the first electric valve and the second electric valve are started to open the valves, and liquid nitrogen in the liquid nitrogen storage tank is sprayed into the cooling chamber. The temperature in the cooling chamber drops rapidly, the temperature of the waste plastics placed in the cooling chamber drops, and at the same time, hot air is discharged through the exhaust pipe. The temperature sensor installed in the cooling chamber feeds back the temperature in the cooling chamber to the control system. When the temperature in the cooling chamber reaches the set value, the first electric valve closes, and the valve connected to the liquid nitrogen storage tank closes. The waste plastics after low-temperature cooling are easily embrittled and can be cut faster in the crushing box. Different types of plastics have different embrittlement temperatures, which can be set through the temperature setter. And in the prior art, the patent with the publication number "CN108858899B" and the patent name "A large-diameter rapid crusher for waste plastic recycling and processing" discloses that a water pipe is fixed on the top of the main body, and then the water inlet switch of the water pipe is opened. At the same time, waste plastics are added into the interior of the main body, so that the waste crushed materials are guided through the guide plate and enter the middle of the crushing wheel. Then the waste plastics after being crushed will fall above the separation plate, and the smaller residues and waste plastics are driven by water to enter the interior of the collection bin through the separation holes. Then the water is filtered by the filter cover, and the water is discharged from the interior of the collection bin through the water outlet, while the waste plastics and residues stay in the collection bin. After crushing the waste plastics, the collection bin, the smaller waste plastics and the residues can be taken out of the interior of the main body as a whole. Then the crushed waste plastics enter above the filter member through the discharge pipe, so that the water remaining above the crushed waste materials is simply filtered to minimize the water remaining on the surface of the waste plastics. After filtering the waste plastics, the crushed waste plastics are taken out manually to complete the crushing of the waste plastics.

[0003] When the crusher in the above-mentioned prior art is in use, waste plastics are directly fed through a guide plate into the middle of a crushing wheel for crushing. In this way, impurities such as silt on the surface of the plastic pipe are also crushed and adhered to each other, resulting in the need for a large amount of water and a long cleaning time after crushing to separate the impurities from the crushed plastic pipe. As a result, the efficiency of the entire classification crusher for crushing and recycling plastic pipes is slow, and the quality of crushing and recycling plastic pipes is poor, affecting the subsequent recycling operation. Therefore, we propose a pipeline solid waste classification crusher and its material recycling method to solve the problems raised above. Summary of the Invention

[0004] The purpose of the present invention is to provide a pipeline solid waste classification crusher and its material recycling method to solve the problem in the above-mentioned background technology that the crusher in the current market causes impurities such as silt on the surface of the plastic pipe to be crushed and adhered to each other, resulting in slow efficiency of the entire classification crusher for crushing and recycling plastic pipes, poor quality of crushing and recycling plastic pipes, and affecting the subsequent recycling operation.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A pipeline solid waste classification crusher includes a housing with a support base installed on the bottom surface, and a first feed frame and a second feed frame installed above the housing in sequence from front to back. Inside the housing, a primary crushing component and a secondary crushing component are installed from top to bottom in sequence. The left side inside the second feed frame is connected with a moving ring through a connection control mechanism. Inside the moving ring, a cross-shaped body is installed, and on the right side surface of the cross-shaped body, cutting knife components for preliminary slicing are symmetrically fixed. The right side surface of the cross-shaped body is connected with a control ring and an inner scraping component through a rod, and an outer scraping component is installed inside the control ring.

[0006] Preferably, the front and rear ends of the primary crushing component and the secondary crushing component penetrate through the front and rear side surfaces of the housing. The front ends of one of the primary crushing components and one of the secondary crushing components are connected through a sprocket component, and the rear ends of the two primary crushing components and the rear ends of the two secondary crushing components are connected through a transmission gear group inside the transmission gear box on the rear side of the housing.

[0007] Preferably, the connection control mechanism includes a single-rotation reciprocating lead screw and a threaded rod installed in a groove opened on the inner wall of the upper surface of the second feed frame. The right end of the single-rotation reciprocating lead screw is connected with the threaded rod. The outer side of the single-rotation reciprocating lead screw is threadedly connected with a connecting frame, and the other end of the connecting frame is connected with the moving ring.

[0008] Preferably, the outer side of the threaded rod is threadedly connected with a pushing frame. The right end of the pushing frame is connected with a pushing ring through a rotating rod, and pushing rods are equally spaced and fixed on the left side surface of the pushing ring.

[0009] Preferably, an arc-shaped limiting baffle is installed on the left side surface of the moving ring.

[0010] Preferably, connecting rods are equidistantly penetrated and installed on the left side surface of the cross-shaped body. The left end of the connecting rod is connected to the turning plate, and a connecting rope is wound and connected to the outer side of the right end of the connecting rod. The other end of the connecting rope penetrates through the cross-shaped body and the inside of the moving ring and is connected to the inner wall of the second feeding frame through a guide wheel. Moreover, a scroll spring is nested and connected to the right end of the connecting rod, and there is a spacing between the turning plate and the limiting baffle.

[0011] Preferably, a filter screen plate is connected inside the housing body below the secondary crushing assembly. Sliders that are slidably connected to the chutes inside the front and rear side surfaces of the housing body are installed on the front and rear side surfaces of the filter screen plate. Vertical limiting rods are installed in the chutes inside the front and rear side surfaces of the housing body. Moreover, a vertical limiting rod penetrates through the inside of the slider, and a return spring is nested and connected to the outer side of the vertical limiting rod. A cleaning and drying box is penetrated and installed inside the housing body on the right side of the filter screen plate. A water draining screen plate is fixed inside the cleaning and drying box and is arranged below the right side of the filter screen plate. A row of shunt pipes is installed on the inner wall of the upper surface of the cleaning and drying box. The right end of the shunt pipe penetrates through the right side surface of the cleaning and drying box and is connected to the inside of the main conveying pipe installed on the right side of the cleaning and drying box.

[0012] Preferably, a control board is attached and arranged above the left side of the filter screen plate. A sliding rod is installed in a groove on the left side surface of the control board. The outer side of the sliding rod is slidably penetrated by the output end of an electric push rod that is penetrated and installed inside the left side surface of the housing body. Moreover, two cross plates are symmetrically installed inside the housing body corresponding to the upper side of the control board, and a row of semi-circular protrusions is installed on the bottom surface of the cross plate. The control board forms a reciprocating lifting structure through the protrusions.

[0013] Preferably, a wiping cloth and a spraying pipe are installed on the inner side wall of the control ring and are respectively arranged on the left and right sides of the outer scraping assembly. The spraying pipe is arranged in a circular ring shape.

[0014] Another technical solution provided by the present invention is to provide a material recycling method for a pipeline solid waste grading crusher, including the following steps: S1: Insert the aged or damaged rigid plastic pipeline into the second feeding frame. Scrape off the impurities on the inner and outer sides of the plastic pipeline through the inner scraping assembly and the outer scraping assembly. At the same time, intermittently cut the plastic pipeline into four pieces and let them fall through the cutting knife assembly. Directly put the plastic waste in the extruder or the remaining pipe materials after truncation into the first feeding frame; S2: Perform grading crushing on the plastic pipeline, the plastic waste in the extruder or the remaining pipe materials after truncation through the primary crushing assembly and the secondary crushing assembly; S3: The crushed plastic particles fall on the filter screen plate and are filtered again. Later, push the plastic particles on the filter screen plate onto the water draining screen plate through the control board; S4: Then, rinse the plastic particles on the drain net plate through the main conveying pipe and the shunt pipe; S5: Then, dry and recycle the plastic particles on the drain net plate through the main conveying pipe and the shunt pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The pipeline solid waste grading crusher and its material recycling method are convenient for the preliminary cleaning of aged or damaged rigid plastic pipelines, avoiding the influence of impurities such as silt on the crushing efficiency and quality, thereby improving the efficiency and quality of plastic pipeline crushing and recycling, and facilitating the later recycling and reuse of the crushed plastic particles. The specific content is as follows: Through the combined use of the inner scraping component and the outer scraping component in the shape of a circular ring, the silt and other impurities adhered to the inner and outer surfaces of the aged or damaged rigid plastic pipeline with a fixed size can be scraped off, and at the same time, the scraped impurities are discharged through the slag discharge port at the bottom of the second feed frame, thus facilitating the preliminary cleaning of the aged or damaged rigid plastic pipeline, avoiding the influence of silt and other impurities on the crushing efficiency and quality, and only a small amount of cleaning water and a short cleaning time are required in the later stage, thereby improving the efficiency and quality of plastic pipeline crushing and recycling, and facilitating the later recycling and reuse of the crushed plastic particles; Through the four groups of cutting knife components, the aged or damaged rigid plastic pipeline can be cut into four parts from one end, and at the same time, through the combined use of the intermittently rotating turning plate and the limit baffle, the partial areas of the four cut plastic pipelines can be automatically broken, so that the long aged or damaged rigid plastic pipeline can enter the outer shell for crushing operation intermittently and in small segments, thus further improving the crushing quality and efficiency; When the control board pushes the crushed plastic particles on the filter net plate onto the drain net plate, the semi-circular protrusions can automatically drive the control board and the filter net plate to move up and down reciprocally, so that the filter net plate can lift the plastic particles above upward, and by repeating this operation, the impurities can fall downward well through the filter net plate, further separating the impurities from the plastic particles and facilitating the improvement of the purity of plastic particle crushing and recycling; Through the circular spraying pipe, a mixed solution of vinegar and soda water can be sprayed onto the outer side of the plastic pipeline. After the reaction between vinegar and soda water, the coating on the outer surface of the plastic pipeline can be decomposed, and the coating can be wiped off by the wiping cloth in the later stage, thus further improving the cleanliness of the plastic pipeline surface, obtaining relatively clean plastic particles, facilitating the further improvement of the purity of plastic particle crushing and recycling, and improving the later recycling quality and reuse effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2Schematic diagram of the rear view partial section structure of the outer shell of the present invention; Figure 3 Schematic diagram of the main section structure of the outer shell of the present invention; Figure 4 Schematic diagram of the main section structure of the second feeding frame of the present invention; Figure 5 Schematic diagram of the three-dimensional structure of the pushing frame of the present invention; Figure 6 Schematic diagram of the three-dimensional right view structure of the moving ring of the present invention; Figure 7 Schematic diagram of the three-dimensional left view structure of the moving ring of the present invention; Figure 8 Schematic diagram of the main section structure of the moving ring of the present invention; Figure 9 Schematic diagram of the three-dimensional structure after the turning plate rotates of the present invention; Figure 10 Schematic diagram of the connection section structure between the outer shell and the filter screen plate of the present invention; Figure 11 Schematic diagram of the left view structure of the connection between the filter screen plate and the control board of the present invention; Figure 12 Schematic diagram of the three-dimensional structure of the control ring in the second embodiment of the present invention.

[0017] In the figure: 1. Outer shell; 2. Support base; 3. First feeding frame; 4. Second feeding frame; 5. Single-spiral reciprocating lead screw; 51. Connecting frame; 6. Primary crushing component; 7. Secondary crushing component; 8. Cleaning and drying box; 81. Drainage screen plate; 9. Pushing frame; 91. Pushing ring; 92. Rotating rod; 93. Pushing rod; 10. Main conveying pipe; 101. Shunt pipe; 11. Transmission gear box; 12. Electric push rod; 13. Control board; 131. Slide bar; 14. Threaded rod; 15. Filter screen plate; 151. Slide block; 152. Vertical limiting rod; 153. Return spring; 16. Moving ring; 17. Control ring; 171. Outer scraping component; 172. Spraying pipe; 173. Wiping cloth; 18. Cross-shaped body; 19. Cutting knife component; 20. Limit baffle; 21. Turning plate; 211. Connecting rod; 212. Vortex spring; 22. Connecting rope; 23. Horizontal plate; 231. Protrusion; 24. Inner scraping component. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0019] Please refer to Figures 1 - 12 , the present invention provides the following technical solutions: Embodiment 1: A pipeline solid waste grading crusher and its material recovery method in this embodiment. First, the surface of the aged or damaged rigid plastic pipeline is preliminarily cleaned of impurities such as silt, and then the plastic pipeline is segmented and cut into pieces, so as to avoid the influence of impurities such as silt on the crushing efficiency and quality of the rigid plastic pipeline, and facilitate the subsequent recycling of the crushed plastic particles. The specific structure is shown in the attached Figures 1 - 11 figure. It includes a housing 1 with a support base 2 installed on the bottom surface, and a first feed frame 3 and a second feed frame 4 installed on the upper part of the housing 1 in sequence from front to back. Inside the housing 1, a primary crushing component 6 and a secondary crushing component 7 are installed in sequence from top to bottom. The left side inside the second feed frame 4 is connected to a moving ring 16 through a connection control mechanism. Inside the moving ring 16, a cross-shaped body 18 is installed. And on the right side surface of the cross-shaped body 18, cutting knife assemblies 19 for preliminary cutting are symmetrically fixed. The right side surface of the cross-shaped body 18 is connected to a control ring 17 and an inner scraping component 24 through a rod. And an outer scraping component 171 is installed inside the control ring 17. The front and rear ends of the primary crushing component 6 and the secondary crushing component 7 penetrate through the front and rear side surfaces of the housing 1. And the front ends of one of the primary crushing components 6 and one of the secondary crushing components 7 are connected through a sprocket assembly. The rear ends of the two primary crushing components 6 and the rear ends of the two secondary crushing components 7 are all connected through a transmission gear set inside a transmission gear box 11 on the rear side of the housing 1. The connection control mechanism includes a single-spin reciprocating lead screw 5 and a threaded rod 14 installed in a groove opened on the inner wall of the upper surface of the second feed frame 4. The right end of the single-spin reciprocating lead screw 5 is connected to the threaded rod 14. The outer side of the single-spin reciprocating lead screw 5 is threadedly connected to a connecting frame 51. The other end of the connecting frame 51 is connected to the moving ring 16.

[0020] A push frame 9 is threadedly connected to the outer side of the threaded rod 14. The right end of the push frame 9 is connected to a push ring 91 through a rotating rod 92. A plurality of push rods 93 are fixedly arranged at equal intervals on the left side surface of the push ring 91. An arc-shaped limit baffle 20 is installed on the left side surface of the moving ring 16. A plurality of connecting rods 211 are installed through the left side surface of the cross-shaped body 18 at equal intervals. The left end of the connecting rod 211 is connected to the turning plate 21. A connecting rope 22 is wound and connected to the outer side of the right end of the connecting rod 211. The other end of the connecting rope 22 passes through the cross-shaped body 18 and the inside of the moving ring 16 and is connected to the inner wall of the second feeding frame 4 through a guide wheel. A scroll spring 212 is nested and connected to the right end of the connecting rod 211. There is a gap between the turning plate 21 and the limit baffle 20. A filter screen plate 15 is connected inside the outer shell 1 below the secondary crushing assembly 7. Sliders 151 which are slidably connected to the chutes inside the front and rear side surfaces of the outer shell 1 are installed on the front and rear side surfaces of the filter screen plate 15. Vertical limit rods 152 are installed in the chutes inside the front and rear side surfaces of the outer shell 1. The vertical limit rods 152 penetrate through the inside of the sliders 151. A return spring 153 is nested on the outer side of the vertical limit rods 152. A cleaning and drying box 8 is installed through the outer shell 1 on the right side of the filter screen plate 15. A water drainage screen plate 81 which is arranged below the right side of the filter screen plate 15 is fixed inside the cleaning and drying box 8. A row of shunt pipes 101 are installed on the inner wall of the upper surface of the cleaning and drying box 8. The right end of the shunt pipe 101 penetrates through the right side surface of the cleaning and drying box 8 and is communicated with the inside of the main conveying pipe 10 installed on the right side of the cleaning and drying box 8. A control board 13 is arranged in a fitting manner above the left side of the filter screen plate 15. A slide rod 131 is installed in a groove on the left side surface of the control board 13. The outer side of the slide rod 131 is slidably penetrated by the output end of an electric push rod 12 installed through the left side surface of the outer shell 1. Two cross plates 23 are symmetrically installed in the outer shell 1 corresponding to the upper side of the control board 13. A row of semi-circular protrusions 231 are installed on the bottom surface of the cross plate 23. The control board 13 forms a reciprocating lifting structure through the protrusions 231.

[0021] First, insert one end of the longer aged or damaged rigid plastic pipe into the second feeding frame 4. At this time, the outer side surface of one end of the aged or damaged rigid plastic pipe is in close contact with the outer scraping assembly 171, and the inner side surface of one end of the aged or damaged rigid plastic pipe is in close contact with the inner scraping assembly 24. Then, manually rotate the pushing ring 91 around the rotating rod 92 so that the pushing ring 91 and the aged or damaged rigid plastic pipe are concentric. Next, connect the left end of the single-thread reciprocating screw rod 5 to an external motor through a coupling. The motor drives the single-thread reciprocating screw rod 5 and the threaded rod 14 to rotate together. When the single-thread reciprocating screw rod 5 rotates, it drives the connecting frame 51 connected by external threads to move left and right reciprocally. The connecting frame 51 drives the moving ring 16, the control ring 17, and the inner scraping assembly 24 to move left and right reciprocally. When the threaded rod 14 rotates, it drives the pushing frame 9 connected by external threads to move leftward. The pushing frame 9 drives the pushing ring 91 and the pushing rod 93 to move leftward, so that the pushing rod 93 applies a leftward thrust to the aged or damaged rigid plastic pipe in the second feeding frame 4. At this time, the annular inner scraping assembly 24 and the outer scraping assembly 171 can scrape off impurities such as silt adhering to the inner and outer surfaces of the aged or damaged rigid plastic pipe. Then, the scraped impurities such as silt fall into the slag discharge port on the bottom surface through the inclined surface inside the bottom surface of the second feeding frame 4 and are discharged.

[0022] When the aged or damaged rigid plastic pipe moves leftward and contacts the cutting knife assembly 19 on the right side of the cross-shaped body 18 in the moving ring 16, the cutting knife assembly 19 cuts the left end of the rigid plastic pipe into four parts. At the same time, when the moving ring 16 moves rightward to a certain position, the connecting rope 22 is pulled to drive the connecting rod 211 to rotate. When the connecting rod 211 rotates, it drives the turning plate 21 to rotate together, and at the same time, the scroll spring 212 stores energy. After the turning plate 21 rotates to a certain angle, it applies an outward thrust to the rigid plastic pipe cut into four parts. At this time, through the setting of the limit baffle 20, the four turning plates 21 can simultaneously break the rigid plastic pipe with one end cut into four parts. By operating in this way repeatedly, the longer aged or damaged rigid plastic pipe can enter the outer casing 1 intermittently and in small sections. Then, start the motor on the front side of the outer casing 1. The motor drives the two first-stage crushing assemblies 6 and the two second-stage crushing assemblies 7 to rotate together through the cooperation of the sprocket assembly and the transmission gearbox 11 to perform a grading crushing operation on the broken rigid plastic pipe. The crushed plastic particles fall on the filter mesh plate 15, and then the small impurities in the plastic particles are filtered out through the filter mesh plate 15.

[0023] When the crushing is completed, the electric push rod 12 is started, and the output end of the electric push rod 12 drives the control board 13 to move rightward, and the control board 13 pushes the plastic particles on the filter screen plate 15 to the rightward onto the drain screen plate 81 in the cleaning and drying box 8. At the same time, when the control board 13 moves to the right and contacts with the two rows of protrusions 231, the protrusions 231 will apply a downward thrust to the control board 13, and the control board 13 applies a downward thrust to the filter screen plate 15, and the sliders 151 on the front and rear sides of the filter screen plate 15 slide on the outer sides of the vertical limit rods 152. At the same time, the reset spring 153 is squeezed and stored. When the control plate 13 moves to the right and separates from the two rows of protrusions 231, as shown above, the filter screen plate 15 is automatically driven to move upward and reset through the stored force of the reset spring 153. This operation is repeated, so that the filter screen plate 15 is lifted up and down to lift the plastic particles above, and then the impurities can be well passed through the filter screen plate 15 and fall downward, which can further separate the impurities from the plastic particles, thereby facilitating the improvement of the purity of the crushed and recovered plastic particles, thereby further improving the quality and efficiency of the crushing.

[0024] When all the plastic particles on the filter screen 15 fall onto the drain screen 81, the external cleaning water is sprayed onto the drain screen 81 through the main delivery pipe 10 and the diversion pipe 101, so as to clean the plastic particles on the drain screen 81 and further remove fine impurities and dust. After the cleaning is completed, the external wind can be blown onto the drain screen 81 through the main delivery pipe 10 and the diversion pipe 101, so as to dry the plastic particles on the drain screen 81. Finally, the observation door on the front side of the cleaning and drying box 8 is opened to collect and recycle the plastic particles on the drain screen 81 for reuse.

[0025] The plastic waste or the cut-off pipe residue in the extruder can be directly put into the first feed frame 3, and then fall into the outer shell 1 to enter the graded crushing operation as shown above.

[0026] In order to better demonstrate the material recovery method of the pipeline solid waste grading crusher, a material recovery method of the pipeline solid waste grading crusher in this embodiment includes the following steps: Step 1: insert the aged or damaged hard plastic pipe into the second feed frame 4, scrape away the impurities inside and outside the plastic pipe by the inner scraper assembly 24 and the outer scraper assembly 171, and at the same time intermittently cut the plastic pipe into four parts by the cutting knife assembly 19, and put the plastic waste or the cut-off pipe residue in the extruder directly into the first feed frame 3; Step 2: The plastic pipe, the plastic waste in the extruder or the cut-off pipe residue are graded and crushed by the primary crushing component 6 and the secondary crushing component 7; Step 3: The crushed plastic particles fall onto the filter mesh plate 15 for further filtration, and later, the control panel 13 is used to push the plastic particles on the filter mesh plate 15 onto the water-draining mesh plate 81; Step 4: Then, the plastic particles on the water-draining mesh plate 81 are rinsed through the main delivery pipe 10 and the shunt pipe 101; Step 5: Next, the plastic particles on the water-draining mesh plate 81 are dried and recycled through the main delivery pipe 10 and the shunt pipe 101.

[0027] Embodiment 2: In a pipeline solid waste grading crusher and its material recycling method in this embodiment, on the basis of Embodiment 1, the coating on the outer surface of the aged or damaged rigid plastic pipeline can be further removed. For the specific structure, refer to the attached Figures 1 - 12 As shown, the inner side wall of the control ring 17 is provided with a wiping cloth 173 and a spraying pipe 172 respectively arranged on the left and right sides of the outer scraping assembly 171. The spraying pipe 172 is arranged in a circular ring shape. The mixed solution of vinegar and soda water is injected into the spraying pipe 172 through a connecting hose, and then the circular spraying pipe 172 sprays the mixed solution of vinegar and soda water onto the outer surface of the aged or damaged rigid plastic pipeline. Then, after the reaction between vinegar and soda water, the coating on the outer surface of the plastic pipeline can be decomposed, and then the coating can be wiped off by the wiping cloth 173, so as to further improve the cleanliness of the plastic pipeline surface, facilitate obtaining relatively clean plastic particles in the later stage, further improve the purity of the plastic particle crushing and recycling, and facilitate improving the later recycling quality and reuse effect.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A pipeline solid waste grading crusher, comprising a housing (1) with a support base (2) installed on the bottom surface, and a first feed frame (3) and a second feed frame (4) sequentially installed above the housing (1) from front to back, characterized in that: Inside the outer housing (1), a primary crushing component (6) and a secondary crushing component (7) are successively installed from top to bottom. Inside the left side of the second feed frame (4), a moving ring (16) is connected through a connection control mechanism. Inside the moving ring (16), a cross-shaped body (18) is installed. And symmetrically fixed on the right side surface of the cross-shaped body (18) is a cutting knife assembly (19) for preliminary slicing. The right side surface of the cross-shaped body (18) is connected to a control ring (17) and an inner scraping component (24) through a rod. And inside the control ring (17), an outer scraping component (171) is installed.

2. The pipe solid waste grading crusher according to claim 1, characterized in that: The front and rear ends of the primary crushing component (6) and the secondary crushing component (7) penetrate through the front and rear side surfaces of the outer housing (1). And the front ends of one of the primary crushing components (6) and one of the secondary crushing components (7) are connected through a sprocket assembly. The rear ends of the two primary crushing components (6) and the rear ends of the two secondary crushing components (7) are all connected through a transmission gear set inside the transmission gear box (11) on the rear side of the outer housing (1).

3. The pipe solid waste grading crusher according to claim 2, characterized in that: The connection control mechanism includes a single-spin reciprocating lead screw (5) and a threaded rod (14) installed in a groove opened on the inner wall of the upper surface of the second feed frame (4). The right end of the single-spin reciprocating lead screw (5) is connected to the threaded rod (14). The outer side of the single-spin reciprocating lead screw (5) is threadedly connected to a connection frame (51). The other end of the connection frame (51) is connected to the moving ring (16).

4. The pipe solid waste grading crusher according to claim 3, characterized in that: The outer side of the threaded rod (14) is threadedly connected to a pushing frame (9). The right end of the pushing frame (9) is connected to a pushing ring (91) through a rotating rod (92). Equally spaced on the left side surface of the pushing ring (91) are fixed pushing rods (93).

5. The pipe solid waste grading crusher according to claim 4, characterized in that: An arc-shaped limiting baffle (20) is installed on the left side surface of the moving ring (16).

6. The pipe solid waste grading crusher according to claim 5, wherein: Equally spaced on the left side surface of the cross-shaped body (18) are penetratingly installed connecting rods (211). The left ends of the connecting rods (211) are connected to a turning plate (21). And the outer side of the right end of the connecting rod (211) is wound and connected with a connecting rope (22). And the other end of the connecting rope (22) penetrates through the inside of the cross-shaped body (18) and the moving ring (16) and is connected to the inner wall of the second feed frame (4) through a guide wheel. Moreover, the right end of the connecting rod (211) is nested and connected with a scroll spring (212). There is a spacing between the turning plate (21) and the limiting baffle (20).

7. The pipe solid waste grading crusher according to claim 6, characterized in that: A filter screen plate (15) is connected inside the outer casing (1) below the secondary crushing assembly (7). Sliders (151) are installed on both the front and rear sides of the filter screen plate (15) and are slidably connected to the chutes inside the front and rear sides of the outer casing (1). Vertical limiting rods (152) are installed in the chutes inside the front and rear sides of the outer casing (1), and the vertical limiting rods (152) penetrate through the inside of the sliders (151). A return spring (153) is nested on the outer side of the vertical limiting rods (152). A cleaning and drying box (8) is installed through the outer casing (1) on the right side of the filter screen plate (15). A water drainage screen plate (81) is fixed inside the cleaning and drying box (8) and is arranged below the right side of the filter screen plate (15). A row of shunt pipes (101) is installed on the inner wall of the upper surface of the cleaning and drying box (8). The right end of the shunt pipe (101) penetrates through the right side surface of the cleaning and drying box (8) and is communicated with the inside of the main conveying pipe (10) installed on the right side of the cleaning and drying box (8).

8. A pipeline solid waste grading crusher according to claim 7, characterized in that: A control board (13) is arranged in a fitting manner above the left side of the filter screen plate (15). A sliding rod (131) is installed in a groove on the left side surface of the control board (13). The outer side of the sliding rod (131) is slidably connected through the output end of an electric push rod (12) installed through the left side surface of the outer casing (1). Two cross plates (23) are symmetrically installed inside the outer casing (1) corresponding to the upper side of the control board (13). A row of semi-circular protrusions (231) is installed on the bottom surface of the cross plates (23). The control board (13) forms a reciprocating lifting structure through the protrusions (231).

9. The pipe solid waste grading crusher according to claim 8, wherein: Wiping cloths (173) and spraying pipes (172) are installed on the inner side wall of the control ring (17) and are respectively arranged on the left and right sides of the outer scraping assembly (171). The spraying pipes (172) are arranged in a circular ring shape.

10. A material recovery method for a pipeline solid waste grading crusher according to claim 9, comprising the following steps: S1: Insert the aged or damaged rigid plastic pipeline into the second feeding frame (4). Scrape off the impurities on the inner and outer sides of the plastic pipeline through the inner scraping assembly (24) and the outer scraping assembly (171). At the same time, intermittently cut the plastic pipeline into four pieces and let them fall through the cutting knife assembly (19). Directly put the plastic waste in the extruder or the remaining pipe materials after truncation into the first feeding frame (3). S2: Perform grading crushing on the plastic pipeline, the plastic waste in the extruder or the remaining pipe materials after truncation through the primary crushing assembly (6) and the secondary crushing assembly (7). S3: The crushed plastic particles fall on the filter screen plate (15) and are filtered again. Later, push the plastic particles on the filter screen plate (15) onto the water drainage screen plate (81) through the control board (13). S4: Then, wash the plastic particles on the water drainage screen plate (81) through the main conveying pipe (10) and the shunt pipes (101). S5: Then, dry and recover the plastic particles on the water drainage screen plate (81) through the main conveying pipe (10) and the shunt pipes (101).

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