Pipeline solid waste grading crusher and material recovery method thereof

Abstract

The present invention relates to the technical field of pipeline solid waste material processing, specifically a pipeline solid waste grading crusher and a material recovery method thereof, comprising an outer shell having a support base mounted on the bottom surface, and a first feed frame and a second feed frame mounted sequentially from front to back on top of the outer shell, wherein the interior of the outer shell is sequentially mounted from top to bottom with a primary crushing assembly and a secondary crushing assembly, the interior of the left side of the second feed frame is connected to a movable ring via a connection control mechanism, a cross body is mounted inside the movable ring, and a cutting knife assembly for preliminary cutting is symmetrically fixed on the right side of the cross body. The pipeline solid waste grading crusher and the material recovery method thereof facilitate the preliminary cleaning of aged or damaged rigid plastic pipes, prevent impurities such as silt from affecting the efficiency and quality of crushing, thereby improving the efficiency and quality of plastic pipe crushing and recovery, and facilitating the subsequent recycling and reuse of crushed plastic particles.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline solid waste material processing, and in particular to a pipeline solid waste grading crusher and a material recovery method thereof. Background Art

[0002] During the processing and subsequent use of plastic pipes, pipe solid waste materials will be generated, such as waste in the extruder, cut pipe residues, aging and damaged pipes, etc. Since these plastic pipe solid waste materials have a long degradation cycle and pollute the environment, a grading crusher is needed to grade and crush these plastic pipe solid waste materials for later recycling and reuse.

[0003] For example, the patent title disclosed in the prior art with the announcement number "CN107433698B" is "A waste plastic crusher", which discloses that the waste plastic enters the cooling chamber, the brittle temperature of the waste plastic is input into the temperature setter, the first electric valve and the second electric valve are started, the valves are opened, and the 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 plastic placed in the cooling chamber drops, and the exhaust pipe discharges hot air to the outside. 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 is closed, and the valve connected to the liquid nitrogen storage tank is closed. The waste plastic after low-temperature cooling is easy to be brittle, and then enters the crushing box for faster cutting. Different types of plastics have different brittle temperatures, which can be set by the temperature setter, and the patent title disclosed in the prior art with the announcement number "CN108858899B" is "A waste plastic crusher". The large-diameter rapid crusher for recycling and processing is disclosed, which fixes a water pipe on the top of the main body, then opens the water inlet switch of the water pipe, and adds waste plastic into the interior of the main body at the same time, so that the waste fragments are guided through the guide plate and enter the middle of the crushing wheel, and then the crushed waste plastics will fall above the separation plate, while the smaller residues and waste plastics are driven by the water from the separation hole into the interior of the collection bin, and then the water is filtered by the filter cover and discharged from the interior of the collection bin through the water outlet, while the waste plastics and residues remain inside the collection bin. After the waste plastics are crushed, the collection bin, the smaller waste plastics and residues can be taken out from the interior of the main body as a whole, and then the crushed waste plastics enter the top of the filter element through the discharge pipe, so that the residual water above the crushed waste fragments is simply filtered, and the water residual on the surface of the waste plastics is reduced as much as possible. After the waste plastics are filtered, the crushed waste plastics are taken out by manpower, thereby completing the crushing of the waste plastics.

[0004] When the above-mentioned prior art crusher is in use, the waste plastic is first directly passed through the guide plate into the middle of the crushing wheel for crushing processing. In this way, impurities such as silt on the surface of the plastic pipe are crushed together and cause them to stick together. As a result, a large amount of water is required after crushing and a long cleaning time is required to separate the impurities and the crushed plastic pipe. As a result, the efficiency of the entire grading crusher in crushing and recycling the plastic pipe is slow, and the quality of the crushing and recycling of the plastic pipe is poor, affecting the subsequent recycling and reuse operations. Therefore, we propose a pipe solid waste grading crusher and a material recovery method thereof to solve the above-mentioned problems. Summary of the Invention

[0005] The object of the present invention is to provide a pipe solid waste grading crusher and a material recovery method thereof, so as to solve the problem proposed in the above background technology that the crushers currently on the market cause impurities such as silt on the surface of plastic pipes to be crushed together and adhered to each other, thereby making the efficiency of the entire grading crusher in crushing and recycling plastic pipes slow, and the quality of the crushing and recycling of plastic pipes is poor, affecting the subsequent recycling and reuse operations.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a pipeline solid waste grading crusher, comprising an outer shell body with a support base installed on the bottom surface, and a first feed frame and a second feed frame installed in sequence from front to back above the outer shell body, the interior of the outer shell body is sequentially installed with a primary crushing assembly and a secondary crushing assembly from top to bottom, the left interior of the second feed frame is connected to a movable ring through a connecting control mechanism, a cross body is installed in the interior of the movable ring, and a cutting knife assembly for preliminary cutting is symmetrically fixed on the right side of the cross body, the right side of the cross body is connected to the control ring and the inner scraper assembly through a rod, and an outer scraper assembly is installed in the interior of the control ring.

[0007] Preferably, the front and rear ends of the primary crushing assembly and the secondary crushing assembly both pass through the front and rear side surfaces of the outer shell, and the front ends of one primary crushing assembly and one secondary crushing assembly are connected through a sprocket assembly, and the rear ends of the two primary crushing assemblies and the rear ends of the two secondary crushing assemblies are connected through a transmission gear set in a transmission gear box on the rear side of the outer shell.

[0008] Preferably, the connection control mechanism includes a single-rotation reciprocating 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 screw is connected to the threaded rod, and the outer side of the single-rotation reciprocating screw is threadedly connected to a connecting frame, and the other end of the connecting frame is connected to the movable ring.

[0009] Preferably, the outer side of the threaded rod is threadedly connected to a pushing frame, the right end of the pushing frame is connected to a pushing ring through a rotating rod, and pushing rods are fixed on the left side of the pushing ring at equal intervals.

[0010] Preferably, an arc-shaped limiting baffle is installed on the left side of the movable ring.

[0011] Preferably, connecting rods are installed at equal intervals through the left side of the cross body, the left end of the connecting rod is connected to the flip plate, and a connecting rope is wrapped around the outside of the right end of the connecting rod, and the other end of the connecting rope passes through the cross body and the inside of the movable ring and is connected to the inner wall of the second feed frame through the guide wheel, and the right end of the connecting rod is nested and connected with a vortex spring, and there is a distance between the flip plate and the limit baffle.

[0012] Preferably, a filter screen plate is connected to the outer shell below the secondary crushing assembly, and sliders are installed on the front and rear sides of the filter screen plate, which are slidably connected to the slide grooves in the front and rear sides of the outer shell, and vertical limit rods are installed in the slide grooves in the front and rear sides of the outer shell, and a vertical limit rod is provided inside the slider, and a return spring is nested and connected to the outside of the vertical limit rod, and a cleaning and drying box is installed through the outer shell on the right side of the filter screen plate, and a drain screen plate arranged below the right side of the filter screen plate is fixed inside the cleaning and drying box, and a row of diversion pipes are installed on the inner wall of the upper surface of the cleaning and drying box, and the right end of the diversion pipe passes through the right side 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.

[0013] Preferably, a control panel is fitted on the upper left side of the filter screen plate, and a sliding rod is installed in a groove on the left side of the control panel. The outer side of the sliding rod is slidably connected to the output end of the electric push rod installed in the left side of the outer shell, and two horizontal plates are symmetrically installed in the outer shell corresponding to the control panel, and a row of semicircular protrusions are installed on the bottom surface of the horizontal plate. The control panel forms a reciprocating lifting structure through the protrusions.

[0014] Preferably, the inner side wall of the control ring is installed with a wiping cloth and a spray pipe respectively arranged on the left and right sides of the outer scraping assembly, and the spray pipe is arranged in a circular shape.

[0015] Another technical solution provided by the present invention is to provide a material recovery method of a pipeline solid waste grading crusher, comprising the following steps:

[0016] S1: Insert the aged or damaged rigid plastic pipe into the second feed frame, scrape off impurities on the inside and outside of the plastic pipe using the inner and outer scraping assemblies, and at the same time, use the cutting blade assembly to intermittently cut the plastic pipe into four parts and drop them down. The plastic waste or cut-off pipe residue in the extruder is directly placed into the first feed frame;

[0017] S2: Plastic pipes, plastic waste in extruders or cut-off pipe residues are graded and crushed by the primary crushing component and the secondary crushing component;

[0018] S3: The crushed plastic particles fall on the filter plate and are filtered again. Later, the control panel pushes the plastic particles on the filter plate onto the drain plate;

[0019] S4: The plastic particles on the drain screen are then flushed through the main delivery pipe and the diversion pipe;

[0020] S5: The plastic particles on the drain screen are then dried and recovered through the main conveying pipe and the diversion pipe.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: the pipe solid waste grading crusher and the material recovery method thereof facilitate the preliminary cleaning of aged or damaged rigid plastic pipes, preventing impurities such as silt from affecting the efficiency and quality of crushing, thereby improving the efficiency and quality of plastic pipe crushing and recycling, and facilitating the subsequent recycling and reuse of crushed plastic particles. The specific contents are as follows:

[0022] By cooperating with the ring-shaped inner scraping assembly and the outer scraping assembly, the silt and other impurities adhering to the inner and outer surfaces of the fixed-size aged or damaged rigid plastic pipes can be scraped off, and the scraped impurities are discharged through the slag discharge port on the bottom surface of the second feed frame, thereby facilitating the preliminary cleaning of the aged or damaged rigid plastic pipes, preventing the silt and other impurities from affecting the efficiency and quality of the crushing. In the later stage, only a small amount of cleaning water and a shorter cleaning time are needed, thereby improving the efficiency and quality of the plastic pipe crushing and recycling, and facilitating the later recycling and reuse of the crushed plastic particles;

[0023] The four sets of cutting blade assemblies can cut the aged or damaged rigid plastic pipe into four parts starting from one end. At the same time, the intermittently rotating flip plate and the limit baffle are used in conjunction to automatically break off parts of the four cut plastic pipes. This allows the longer aged or damaged rigid plastic pipe to be intermittently divided into small sections and fed into the outer shell for crushing, thereby further improving the crushing quality and efficiency.

[0024] When the control panel pushes the crushed plastic particles on the filter screen plate onto the drain screen plate, the semicircular protrusions automatically drive the control panel and the filter screen plate to move up and down, so that the filter screen plate can lift the plastic particles above it upwards. This repeated operation allows the impurities to pass through the filter screen plate and fall downwards, further separating the impurities from the plastic particles, thereby improving the purity of the crushed and recovered plastic particles.

[0025] A mixture of vinegar and soda water can be sprayed onto the outer side of the plastic pipe through a circular spray tube. After the vinegar and soda water react, the coating on the outer surface of the plastic pipe can be decomposed. The coating can be wiped off with a wiping cloth later, thereby further improving the cleanliness of the surface of the plastic pipe, thereby obtaining relatively clean plastic particles, which is convenient for further improving the purity of the plastic particles after crushing and recycling, and is convenient for improving the later recycling quality and reuse effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 This is a schematic diagram of a partial cross-sectional rear view of the outer shell of the present invention;

[0028] Figure 3 This is a schematic diagram of the main cross-sectional structure of the outer shell of the present invention;

[0029] Figure 4 This is a schematic diagram of the main cross-sectional structure of the second feed frame of the present invention;

[0030] Figure 5 This is a schematic diagram of the three-dimensional structure of the push frame of the present invention;

[0031] Figure 6 This is a schematic diagram of the three-dimensional structure of the movable ring of the present invention from the right side;

[0032] Figure 7 This is a schematic diagram of the left-side stereoscopic structure of the movable ring of the present invention;

[0033] Figure 8 This is a schematic diagram of the main cross-sectional structure of the movable ring of the present invention;

[0034] Figure 9 This is a schematic diagram of the three-dimensional structure of the flip plate after rotation of the present invention;

[0035] Figure 10 This is a schematic diagram of the cross-sectional structure of the connection between the outer shell and the filter screen plate of the present invention;

[0036] Figure 11 This is a left-side structural diagram of the connection between the filter screen plate and the control panel of the present invention;

[0037] Figure 12 This is a schematic diagram of the three-dimensional structure of the control ring in Example 2 of the present invention.

[0038] In the figure: 1. Outer shell; 2. Support base; 3. First feed frame; 4. Second feed frame; 5. Single-rotating reciprocating screw; 51. Connecting frame; 6. Primary crushing assembly; 7. Secondary crushing assembly; 8. Cleaning and drying box; 81. Drain screen; 9. Pushing frame; 91. Pushing ring; 92. Rotating rod; 93. Pushing rod; 10. Main conveying pipe; 101. Diverter pipe; 11. Transmission gear box; 12. Electric push rod; 13. Control panel; 131. Sliding rod. 14. Threaded rod; 15. Filter screen; 151. Slider; 152. Vertical limit rod; 153. Return spring; 16. Moving ring; 17. Control ring; 171. External scraper assembly; 172. Spray tube; 173. Wiping cloth; 18. Cross body; 19. Cutting knife assembly; 20. Limit baffle; 21. Flip plate; 211. Connecting rod; 212. Vortex spring; 22. Connecting rope; 23. Horizontal plate; 231. Protrusion; 24. Internal scraper assembly. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0040] See also Figures 1-12 , the present invention provides the following technical solutions:

[0041] Example 1: In this embodiment, a pipe solid waste grading crusher and a material recycling method thereof are provided. By first cleaning the surface of the aged or damaged rigid plastic pipes from silt and other impurities, and then cutting the plastic pipes into sections, the efficiency and quality of the rigid plastic pipe crushing can be prevented from being affected by silt and other impurities, and the crushed plastic particles can be recycled and reused in the later stage. For the specific structure, please refer to the attached Figures 1-11As shown, it includes an outer shell 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 outer shell 1 from front to back. The inner part of the outer shell 1 is installed with a primary crushing assembly 6 and a secondary crushing assembly 7 from top to bottom. The left side of the second feed frame 4 is connected to a moving ring 16 through a connecting control mechanism. A cross body 18 is installed inside the moving ring 16, and a cutting knife assembly 19 for preliminary cutting is symmetrically fixed on the right side of the cross body 18. The right side of the cross body 18 is connected to the control ring 17 and the inner scraping assembly 24 through a rod, and the outer scraping assembly 171 is installed inside the control ring 17. The primary crushing assembly The front and rear ends of the first-stage crushing assembly 6 and the secondary crushing assembly 7 pass through the front and rear side surfaces of the outer shell 1, and the front ends of one of the first-stage crushing assemblies 6 and one of the secondary crushing assemblies 7 are connected by a sprocket assembly, and the rear ends of the two first-stage crushing assemblies 6 and the rear ends of the two secondary crushing assemblies 7 are connected by a transmission gear set in the transmission gear box 11 on the rear side of the outer shell 1. The connection control mechanism includes a single-rotation reciprocating screw rod 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-rotation reciprocating screw rod 5 is connected to the threaded rod 14, and the outer side of the single-rotation reciprocating screw rod 5 is threadedly connected to a connecting frame 51, and the other end of the connecting frame 51 is connected to the movable ring 16.

[0042] The outer side of the threaded rod 14 is threadedly connected to the push frame 9, and the right end of the push frame 9 is connected to the push ring 91 through the rotating rod 92. The left side of the push ring 91 is fixed with a push rod 93 at equal intervals. The left side of the mobile ring 16 is installed with an arc-shaped limit baffle 20. The left side of the cross body 18 is evenly spaced and penetrated with a connecting rod 211. The left end of the connecting rod 211 is connected to the flip plate 21, and the right end of the connecting rod 211 is wrapped around the outside and connected with a connecting rope 22, and the other end of the connecting rope 22 penetrates the cross. The frame 18 and the movable ring 16 are connected to the inner wall of the second feed frame 4 through the guide wheel, and the right end of the connecting rod 211 is nested with a vortex spring 212. There is a gap between the flip plate 21 and the limit baffle 20. The outer shell 1 below the secondary crushing assembly 7 is connected to the filter screen plate 15. The front and rear sides of the filter screen plate 15 are both equipped with sliders 151 that are slidably connected to the slide grooves in the front and rear sides of the outer shell 1, and vertical limit rods 152 are installed in the slide grooves in the front and rear sides of the outer shell 1. The interior of the slider 151 is provided with a vertical limit rod 152, and the outer side of the vertical limit rod 152 is nested and connected with a return spring 153. The outer shell 1 on the right side of the filter screen 15 is provided with a cleaning and drying box 8. The interior of the cleaning and drying box 8 is fixed with a drain screen 81 arranged below the right side of the filter screen 15. 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 passes through the right side of the cleaning and drying box 8 and is connected to the main output pipe 101 installed on the right side of the cleaning and drying box 8. The interior of the delivery pipe 10 is connected, and a control panel 13 is fitted on the upper left side of the filter screen plate 15. A slide rod 131 is installed in a groove on the left side of the control panel 13. The outer side of the slide rod 131 is slidably connected to the output end of the electric push rod 12 installed in the left side of the outer shell 1, and two horizontal plates 23 are symmetrically installed in the outer shell 1 corresponding to the control panel 13, and a row of semicircular protrusions 231 are installed on the bottom surface of the horizontal plate 23. The control panel 13 forms a reciprocating lifting structure through the protrusions 231.

[0043] First, insert one end of the longer aged or damaged hard plastic pipe into the second feed frame 4. At this time, the outer side surface of one end of the aged or damaged hard plastic pipe is in contact with the outer scraper component 171, and the inner side surface of one end of the aged or damaged hard plastic pipe is in contact with the inner scraper component 24. Then manually rotate the push ring 91 with the rotating rod 92 as the center of the circle, so that the push ring 91 and the aged or damaged hard plastic pipe are co-centered. Then connect the left end of the single-rotation reciprocating screw 5 to the external motor through a coupling. The motor drives the single-rotation reciprocating screw 5 and the threaded rod 14 to rotate together. When the single-rotation reciprocating screw 5 rotates, it drives the connecting frame 51 connected by the outer thread to rotate. The connecting frame 51 drives the movable ring 16, the control ring 17 and the inner scraping assembly 24 to move back and forth left and right. When the threaded rod 14 rotates, it drives the pushing frame 9 connected by the outer thread to move left, and the pushing frame 9 drives the pushing ring 91 and the pushing rod 93 to move left, so that the pushing rod 93 applies a left thrust to the aged or damaged hard plastic pipe in the second feed frame 4. At this time, the annular inner scraping assembly 24 and the outer scraping assembly 171 can scrape off the silt and other impurities adhered to the inner and outer surfaces of the aged or damaged hard plastic pipe, and then the scraped silt and other impurities fall into the slag discharge port at the bottom through the inclined surface in the bottom surface of the second feed frame 4 and are discharged.

[0044] When the aged or damaged rigid plastic pipe moves to the left and contacts the cutting knife assembly 19 on the right side of the cross body 18 in the movable 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 movable ring 16 moves to a certain position to the right, the connecting rope 22 is pulled to drive the connecting rod 211 to rotate. When the connecting rod 211 rotates, the flip plate 21 is driven to rotate together. At the same time, the vortex spring 212 is charged. When the flip 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 sets of flip plates 21 can simultaneously break the hard plastic pipe with one end cut into four parts. By repeating this operation, the longer, aged or damaged hard plastic pipe can be intermittently and divided into small sections and put into the outer shell 1. Then, the motor on the front side of the outer shell 1 is started. The motor drives the two primary crushing assemblies 6 and the two secondary crushing assemblies 7 to rotate together through the sprocket assembly and the transmission gear box 11 to perform graded crushing operations on the broken hard plastic pipe. The crushed plastic particles fall on the filter plate 15, and then the small impurities in the plastic particles are filtered out by the filter plate 15.

[0045] 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 to the right. The control board 13 pushes the plastic particles on the filter screen 15 to the right onto the drain screen 81 in the cleaning and drying box 8. At the same time, when the control board 13 moves to the right and contacts 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 15. The sliders 151 on the front and rear sides of the filter screen 15 slide on the outside of the vertical limit rod 152. At the same time, the return 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 plate 15 is automatically driven to move upward and reset by the stored force of the return spring 153. This operation is repeated, so that the filter plate 15 is lifted up and down to lift the plastic particles above, and then the impurities can pass through the filter plate 15 and fall down, which can further separate the impurities from the plastic particles, thereby improving the purity of the crushed and recovered plastic particles, thereby further improving the quality and efficiency of the crushing.

[0046] 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 conveying 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 conveying 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, and the plastic particles on the drain screen 81 can be collected, recycled and reused.

[0047] The plastic waste or the cut 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.

[0048] 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:

[0049] Step 1: Insert the aged or damaged rigid plastic pipe into the second feed frame 4. Use the inner scraper assembly 24 and the outer scraper assembly 171 to scrape away impurities on the inside and outside of the plastic pipe. Simultaneously, the cutter assembly 19 intermittently cuts the plastic pipe into four parts and drops them down. The plastic waste or cut pipe residue in the extruder is directly placed into the first feed frame 3.

[0050] Step 2: The plastic pipe, plastic waste in the extruder or cut pipe residue is graded and crushed by the primary crushing component 6 and the secondary crushing component 7;

[0051] Step 3: The crushed plastic particles fall onto the filter screen 15 and are filtered again. Later, the control panel 13 pushes the plastic particles on the filter screen 15 onto the drain screen 81.

[0052] Step 4: The plastic particles on the drain screen 81 are then flushed through the main delivery pipe 10 and the diversion pipe 101;

[0053] Step 5: The plastic particles on the drain screen 81 are dried and recovered through the main conveying pipe 10 and the diversion pipe 101.

[0054] Example 2: A pipe solid waste grading crusher and material recycling method in this embodiment can further remove the coating on the outer surface of aged or damaged hard plastic pipes on the basis of Example 1. The specific structure is shown in the attached figure. Figures 1-12 As shown, the inner wall of the control ring 17 is installed with a wiping cloth 173 and a spraying pipe 172 respectively arranged on the left and right sides of the outer scraping component 171. The spraying pipe 172 is arranged in a circular shape. The mixture 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 mixture of vinegar and soda water onto the outer surface of the aged or damaged hard plastic pipe. Then, after the vinegar and soda water react, the coating on the outer surface of the plastic pipe can be decomposed, and then the coating can be wiped off with the wiping cloth 173, thereby further improving the cleanliness of the surface of the plastic pipe, facilitating the later acquisition of relatively clean plastic particles, further improving the purity of the crushed and recovered plastic particles, and facilitating the improvement of the later recycling quality and reuse effect.

[0055] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pipeline solid waste grading crusher, comprising an outer shell (1) with a support base (2) mounted on the bottom surface, and a first feed frame (3) and a second feed frame (4) mounted on the outer shell (1) in sequence from front to back, characterized in that: The outer shell (1) is provided with a primary crushing assembly (6) and a secondary crushing assembly (7) in order from top to bottom. The left side of the second feed frame (4) is connected to a moving ring (16) via a connecting control mechanism. A cross body (18) is installed inside the moving ring (16). A cutting knife assembly (19) for preliminary cutting is symmetrically fixed on the right side of the cross body (18). The right side of the cross body (18) is connected to the control ring (17) and the inner scraping assembly (24) via a rod. An outer scraping assembly (171) is installed inside the control ring (17). An arc-shaped limit baffle (20) is installed on the left side, and a connecting rod (211) is installed at equal intervals through the left side of the cross body (18), the left end of the connecting rod (211) is connected to the flip plate (21), and a connecting rope (22) is wound around the outside of the right end of the connecting rod (211), and the other end of the connecting rope (22) passes through the cross body (18) and the inside of the moving ring (16) and is connected to the inner wall of the second feed frame (4) through the guide wheel, and the right end of the connecting rod (211) is nested and connected with a vortex spring (212), and there is a distance between the flip plate (21) and the limit baffle (20).

2. The pipeline solid waste grading crusher according to claim 1, characterized in that: The front and rear ends of the primary crushing assembly (6) and the secondary crushing assembly (7) both pass through the front and rear side surfaces of the outer shell (1), and the front ends of one primary crushing assembly (6) and one secondary crushing assembly (7) are connected via a sprocket assembly, and the rear ends of the two primary crushing assemblies (6) and the rear ends of the two secondary crushing assemblies (7) are connected via a transmission gear set in a transmission gear box (11) on the rear side of the outer shell (1).

3. The pipeline solid waste grading crusher according to claim 2, characterized in that: The connection control mechanism includes a single-rotation reciprocating 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-rotation reciprocating screw (5) is connected to the threaded rod (14), the outer side of the single-rotation reciprocating screw (5) is threadedly connected to a connecting frame (51), and the other end of the connecting frame (51) is connected to the moving ring (16).

4. The pipeline solid waste grading crusher according to claim 3, characterized in that: The outer side of the threaded rod (14) is threadedly connected to a push frame (9), the right end of the push frame (9) is connected to a push ring (91) via a rotating rod (92), and push rods (93) are fixed at equal intervals on the left side of the push ring (91).

5. The pipeline solid waste grading crusher according to claim 4, characterized in that: A filter screen (15) is connected to the outer shell (1) below the secondary crushing component (7), and sliders (151) are installed on the front and rear sides of the filter screen (15) and are slidably connected to the slide grooves in the front and rear sides of the outer shell (1). Vertical limit rods (152) are installed in the slide grooves in the front and rear sides of the outer shell (1), and the vertical limit rods (152) are installed inside the sliders (151). The outer side of the vertical limit rods (152) is nested and connected with a return spring (153). A cleaning and drying box (8) is installed inside the outer shell (1) on the right side of the filter screen (15), and a drain screen (81) is fixed inside the cleaning and drying box (8) and is arranged below the right side of the filter screen (15). A row of diverter pipes (101) are installed on the inner wall of the upper surface of the cleaning and drying box (8). The right end of the diverter pipe (101) passes through the right side of the cleaning and drying box (8) and is connected to the inside of the main conveying pipe (10) installed on the right side of the cleaning and drying box (8).

6. The pipeline solid waste grading crusher according to claim 5, characterized in that: A control panel (13) is fitted on the upper left side of the filter screen plate (15), and a slide bar (131) is installed in a groove on the left side of the control panel (13). The outer side of the slide bar (131) is slidably connected to the output end of the electric push rod (12) installed in the left side of the outer shell (1), and two horizontal plates (23) are symmetrically installed in the outer shell (1) above the control panel (13), and a row of semicircular protrusions (231) are installed on the bottom surface of the horizontal plate (23). The control panel (13) forms a reciprocating lifting structure through the protrusions (231).

7. The pipeline solid waste grading crusher according to claim 6, characterized in that: 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), and the spraying pipe (172) is arranged in a circular ring shape.

8. The material recovery method of a pipeline solid waste grading crusher according to claim 7, comprising the following steps: S1: inserting the aged or damaged hard plastic pipe into the second feed frame (4), scraping away impurities on the inside and outside of the plastic pipe by the inner scraping assembly (24) and the outer scraping assembly (171), and at the same time intermittently cutting the plastic pipe into four parts by the cutting knife assembly (19) and dropping them, and directly placing the plastic waste or cut-off pipe residue in the extruder into the first feed frame (3); S2: The plastic pipe, the plastic waste in the extruder or the cut pipe residue are graded and crushed by the primary crushing component (6) and the secondary crushing component (7); S3: The crushed plastic particles fall on the filter screen (15) and are filtered again. Later, the plastic particles on the filter screen (15) are pushed onto the drain screen (81) through the control panel (13); S4: The plastic particles on the drain screen (81) are then flushed through the main delivery pipe (10) and the diversion pipe (101); S5: The plastic particles on the drain screen (81) are then dried and recovered through the main conveying pipe (10) and the diversion pipe (101).

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