Waterproofing membrane edge material recycling device and recycling method

Abstract

The application relates to the technical field of recycling and granulating devices, in particular to a waterproof roll edge material recycling device and method, which comprises a shell, a feeding port is formed in the upper end of the shell, and a discharging port is formed in the lower end of the shell; two extrusion wheels are rotationally connected with the shell, and at least one plastic extrusion channel is formed by the two extrusion wheels; a heating unit is installed on the shell, a heating end of the heating unit extends into the inner cavity of the extrusion wheel, the extrusion wheel is used for heating, and the temperature of the extrusion wheel is lower than the melting point of the edge material; a cutting unit is connected with the shell and located below the extrusion gap; the application does not need to heat the edge material to a molten state and then cool it to be shaped again, energy waste caused in the edge material recycling and granulating process is reduced, and the effect of cutting the strip-shaped body into granular finished products by the cutting unit is facilitated.

Description

Technical Field

[0001] This application relates to the field of recycling granulation equipment technology, and in particular to a device and method for recycling edge material of waterproof membrane. Background Technology

[0002] Waterproof membranes are produced by melting raw materials and then extruding them through extrusion rollers. During the production process, due to the production technology and equipment, the thickness of the waterproof membrane at the edges may not meet the requirements, or it may need to be cut to a specified width. Therefore, there will be a lot of scrap material that needs to be recycled.

[0003] A prior art discloses a nonwoven fabric waste recycling granulator, which includes a melting tank. A stirring and cutting motor is fixedly installed on the upper surface of the melting tank. A stirring blade and a pushing blade are fixedly installed on the output shaft of the stirring and cutting motor. A feed pipe is fixedly installed on the left side of the melting tank. A filter screen and a heating rod are fixedly installed on the inner wall of the melting tank. A discharge pipe is fixedly installed on the lower surface of the melting tank. A molding tube is fixedly installed on the right side of the discharge pipe. A fixing plate is fixedly installed on the inner wall of the molding tube. An installation hole is opened on the side of the fixing plate, and a forming tube is fixedly installed on the inner wall of the installation hole. A collection box is fixedly installed on the right side of the molding tube. A concave groove block is fixedly installed on the upper surface of the collection box. A cutting motor is slidably connected to the inner wall of the concave groove block. A cutting blade is fixedly installed on the output shaft of the cutting motor. A collection pipe is fixedly installed at the lower end of the collection box.

[0004] A nonwoven fabric edge strip online synchronous recycling and granulation device is also disclosed, including an extrusion module, a cooling module, and a cutting module arranged sequentially on a production line support along the material travel direction; the extrusion module includes a screw installed in a screw barrel, the screw ribs on the screw engaging with the inner wall of the screw barrel.

[0005] The material is sheared and compressed. The compression ratio of the screw gradually increases along the material travel direction. The outer ring surface of the screw rib located in the feeding section is uniformly provided with anti-slip grooves along the screw barrel axis to prevent the material from slipping. The feed port on the screw barrel corresponds to the position of the feeding section. A heating module is provided on the surface of the screw barrel to heat the material inside the screw barrel.

[0006] For the two related technologies mentioned above, when recycling scrap materials, it is necessary to first heat the scrap materials to make them into a molten fluid state, then extrude them into a molding tube for molding and cooling, and finally cut them into granular plastic. However, some plastic products have high melting points, and heating them to a molten state requires a lot of energy, which will result in a significant energy waste. Summary of the Invention

[0007] To reduce energy waste during the edge material recycling and granulation process, this application provides a waterproof membrane edge material recycling device and recycling method.

[0008] The technical solution provided in this application for a waterproof membrane edge recycling device and recycling method is as follows:

[0009] In one aspect, this application provides a device for recycling edge material of waterproof membrane.

[0010] A waterproof membrane edge recycling device, comprising

[0011] The housing has a feeding port at its upper end and a discharge port at its lower end.

[0012] Two extrusion rollers are rotatably connected to the housing, and the two extrusion rollers form at least one plastic extrusion channel;

[0013] A heating unit is mounted on the housing, and the heating end of the heating unit extends into the inner cavity of the extrusion wheel for heating the extrusion wheel, and the temperature of the extrusion wheel is lower than the melting point of the edge material;

[0014] A cutting unit is connected to the housing and located below the extrusion gap.

[0015] By adopting the above technical solution, the edge material of the waterproof membrane is first collected, and the extrusion rollers are preheated by the heating unit to make the temperature of the extrusion rollers lower than the melting point of the edge material. Then, the edge material is fed into the feeding port opened at the top of the shell. Under its own gravity, the edge material enters the plastic extrusion channel between the two extrusion rollers. During the extrusion process, the heat on the extrusion rollers is transferred to the edge material, making the surface of the edge material slightly sticky. Combined with the extrusion of the extrusion rollers, the scrap edge material is aggregated into strips. Then, the strips are cut by the cutting unit to obtain granular finished products. The designed waterproof membrane edge material recycling device facilitates the installation of extrusion rollers and cutting units through the shell. The extrusion rollers facilitate the application of pressure to the edge material to extrude it into shape. The heating unit facilitates the provision of heat to the extrusion rollers, thereby heating the edge material and making the surface of the edge material sticky, thus better maintaining adhesion. There is no need to heat the edge material to a molten state and then cool it again to form it, which reduces the energy waste caused by edge material recycling and granulation. The cutting unit facilitates the cutting of strips into granular finished products.

[0016] In one specific implementation scheme, a feeding unit is also included, the feeding unit comprising:

[0017] The feed hopper is conical and located above the feed inlet;

[0018] A connecting pipe, one end of which is connected to the feed hopper and the other end of which is connected to the housing, and the connecting pipe is coaxially arranged with the feed port;

[0019] At least one reciprocating belt is provided, with two pulleys connected inside the reciprocating belt. The pulleys are rotatably connected to the connecting pipe. Multiple traction rods are connected to the reciprocating belt and are arranged along the long side of the reciprocating belt. A clearance groove is provided on the connecting pipe from the hopper side to the feed port side. The traction rods pass through the clearance groove and extend into the inner cavity of the connecting pipe, and move along the opening direction of the clearance groove under the drive of the reciprocating belt.

[0020] By adopting the above technical solution, the cut edge material is fed into the hopper. Under the action of gravity, the edge material moves towards the feeding port along the direction of the connecting pipe. At the same time, the pulley rotates, driving the reciprocating belt to rotate. During the movement of the reciprocating belt, multiple traction rods move, causing the traction rods to pass through the relief groove and extend into the inner cavity of the connecting pipe. The traction rods exert force on the edge material in the connecting pipe, causing the edge material to move towards the feeding port, reducing the possibility of edge material being stuck in the connecting pipe. The designed feeding unit facilitates the temporary storage of edge material through the feeding hopper and facilitates the transportation of edge material from the feeding hopper to the feeding port through the connecting pipe. It can also reduce the potential safety hazards caused by the extrusion wheel quickly pulling the edge material when it is directly fed from the feeding port. The reciprocating belt and traction rods work together to realize the movement of edge material in the connecting pipe, avoiding edge material stagnation in the connecting pipe.

[0021] In one specific implementation, the working section of the reciprocating belt is embedded in the relief groove, and a sliding gap is left between the reciprocating belt and the groove wall of the relief groove.

[0022] By adopting the above technical solution, the designed reciprocating belt, which is embedded in the relief groove and has a sliding gap between it and the groove wall, can block the relief groove while driving the traction rod to move, reducing the possibility of the edge material coming out of the connecting pipe from the relief groove.

[0023] In one specific implementation, the cutting unit includes

[0024] A limiting tube is located inside the housing and is connected to the housing. The upper opening of the limiting tube faces the plastic extrusion channel, and the lower end is used to communicate with the discharge port.

[0025] A cutting motor is connected to the limiting tube, and a cutting blade is coaxially connected to the output shaft of the cutting motor. The cutting blade is located inside the limiting tube and is offset from the limiting tube.

[0026] By adopting the above technical solution, the designed cutting unit can easily drive the cutting blade through the cutting motor, and the cutting blade can easily cut the strip-shaped body formed by the extrusion wheel into granular products. The limiting tube can prevent the granular products from scattering everywhere while the cutting blade is working.

[0027] In one specific implementation scheme, a discharge unit is also included, which includes a fan and a conveying pipeline;

[0028] One end of the conveying pipe is connected to the air outlet of the blower, and the other end is used to connect to the mixing tank. The conveying pipe is connected to the shell, and the inner cavity of the conveying pipe is connected to the inner cavity of the limiting tube.

[0029] By adopting the above technical solution, the designed discharge unit uses a fan to easily blow air into the conveying pipeline, so as to send the granular products into the mixing tank in conjunction with the conveying pipeline. Furthermore, by using air to convey the material, the granular products are cooled down at the same time, reducing the possibility of the granular products sticking together.

[0030] In one specific implementation scheme, a rotating baffle is rotatably connected inside the conveying pipe, and the fan blows air into the conveying pipe so that the rotating baffle rotates and blocks the connection between the conveying pipe and the limiting pipe.

[0031] By adopting the above technical solution, the designed rotating baffle can prevent airflow from entering the limiting tube through the connecting port and disturbing the strip-shaped body, thus avoiding excessive deviation in the size of the cut product.

[0032] In one specific implementation, at least one stop is connected to the conveying pipe. When the rotating baffle hangs down naturally, the rotating baffle abuts against the stop, and the stop is located on the side of the rotating baffle closer to the fan.

[0033] By adopting the above technical solution, the designed baffle can limit the position when the rotating baffle falls naturally, reducing the possibility of particulate products entering the air outlet of the fan.

[0034] Secondly, this application provides a method for recycling edge material of waterproof membrane, including...

[0035] S1: Edge material cutting and collection;

[0036] S2: Extrusion Roller Preheating: The extrusion roller is preheated by a heating unit, and the temperature of the extrusion roller is controlled to always be lower than the melting point of the edge material;

[0037] S3: Plastic bonding: The edge material is extruded and shaped by the extrusion roller, and the heat transfer on the extrusion roller makes the surface of the edge material sticky, thus achieving plastic bonding of the edge material to obtain a strip.

[0038] S4: Cutting into granules: The strip is cut into granules by the cutting unit.

[0039] By adopting the above technical solution, the designed method for recycling edge material of waterproof membrane can reshape the scrap edge material to facilitate subsequent cutting through the cooperation of extrusion rollers and heating units. Furthermore, by applying a temperature below the melting point of the edge material to the extrusion rollers, the difficulty of shaping the edge material can be reduced, and the surface of the edge material can be made to have a certain degree of stickiness, which facilitates the preservation of the shape of the strip before cutting. There is no need to heat the edge material to a molten state and then cool it again to form a new shape, thus reducing the energy waste caused by edge material recycling and granulation.

[0040] In a specific feasible implementation, S5: Cold air feeding: A fan is used to transport the cut granular finished product through a pipeline to a mixing tank for storage and later use.

[0041] By adopting the above technical solution, the designed cold air feeding system can cool down the granular products while conveying them, reducing the possibility of the granular products sticking together.

[0042] In summary, this application includes at least one of the following beneficial technical effects:

[0043] 1. The designed waterproof membrane edge material recycling device facilitates the installation of extrusion rollers and cutting units through the housing. The extrusion rollers facilitate the application of pressure to the edge material to extrude it into shape, and the heating unit facilitates the provision of heat to the extrusion rollers to heat the edge material, thereby making the surface of the edge material sticky and thus better maintaining adhesion. There is no need to heat the edge material to a molten state and then cool it again to form it, which reduces the energy waste caused by edge material recycling and granulation. The cutting unit facilitates the cutting of strips into granular finished products.

[0044] 2. The designed waterproof membrane edge material recycling device uses a hopper to temporarily store edge materials and a connecting pipe to transport the edge materials in the hopper to the feeding port. It can also reduce the potential safety hazards caused by the extrusion wheel quickly pulling the edge materials when they are directly fed into the feeding port. The reciprocating belt and traction rod can be used to move the edge materials in the connecting pipe, preventing the edge materials from stagnating in the connecting pipe.

[0045] 3. The designed waterproof membrane edge recycling device uses a fan to easily blow air into the conveying pipeline, so as to send the granular products into the mixing tank in conjunction with the conveying pipeline. Furthermore, the air-blowing conveying also cools down the granular products while conveying the materials, reducing the possibility of the granular products sticking together. Attached Figure Description

[0046] Figure 1This is a schematic diagram of the structure of the waterproof membrane edge recycling device according to an embodiment of this application.

[0047] Figure 2 yes Figure 1 Top view.

[0048] Figure 3 It is along Figure 2 A cross-sectional view along line AA in the middle.

[0049] Figure 4 It is along Figure 2 A cross-sectional view along the BB line.

[0050] Figure 5 yes Figure 1 A schematic diagram of the structure after adding the discharge unit.

[0051] Figure 6 yes Figure 5 A sectional view.

[0052] Figure 7 yes Figure 6 A schematic diagram of the structure after adding the rotating baffle and the stop block.

[0053] Figure 8 yes Figure 5 A schematic diagram of the structure after the addition of the feeding unit.

[0054] Figure 9 yes Figure 8 A partial structural diagram.

[0055] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Extrusion wheel; 3. Heating unit; 4. Cutting unit; 41. Limiting tube; 42. Cutting motor; 43. Cutting blade; 5. Feeding unit; 51. Feed hopper; 52. Connecting pipe; 521. Relief groove; 53. Reciprocating belt; 54. Pulley; 55. Traction rod; 6. Discharge unit; 61. Fan; 62. Conveying pipe; 63. Rotating baffle; 64. Stop block. Detailed Implementation

[0056] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0057] This application discloses a device and method for recycling edge material of waterproof membrane.

[0058] In a first aspect, embodiments of this application disclose a device for recycling edge material of waterproof membrane.

[0059] Reference Figure 1A waterproof membrane edge material recycling device includes a housing 1, with a feeding port at the upper end and a discharge port at the lower end. In this application, the feeding port can be circular, square, or other shapes, as long as it can allow the edge material to pass through. In this embodiment, in order to reduce the possibility of the edge material scraping against the edge of the feeding port, it is preferably circular. The lower end of the housing 1 is welded with four legs, which are respectively located at the four corners of the housing 1 to support the bottom wall of the housing 1 off the ground.

[0060] Reference Figure 2 To facilitate the reshaping of the scrap material for subsequent cutting, two extrusion rollers 2 are provided inside the housing 1. The two extrusion rollers 2 are aligned axially and are rotatably connected to the housing 1 via bearings. At least one molding extrusion channel is formed between the two extrusion rollers 2, and the molding extrusion channel is located directly below the feeding port. In this application, the two extrusion rollers 2 can form one molding extrusion channel, two molding extrusion channels, or three molding extrusion channels. In this embodiment, two molding extrusion channels are preferred.

[0061] Reference Figure 2 and Figure 3 To better facilitate the extrusion molding of the extrusion roller 2 and improve the adhesion between the edge materials, a heating unit 3 is also included. The heating unit 3 can be a hot air blower 61, an electric heating rod, or other structures that can provide heat to the extrusion roller 2. In this embodiment, the heating unit 3 is preferably an electric heating rod. The extrusion roller 2 is hollow, and the insulated end of the electric heating rod is connected to the housing 1 through a frame. The electric heating rod extends into the inner cavity of the extrusion roller 2 and is staggered from the extrusion roller 2. After the electric heating rod is powered on, it emits heat and radiates it onto the extrusion roller 2, and controls the temperature of the extrusion roller 2 to always be lower than the melting point of the edge material. In this embodiment, the edge material is polypropylene, and the temperature of the extrusion roller 2 is set to 190 degrees Celsius.

[0062] Reference Figure 3 and Figure 4 The extrusion roller 2, in conjunction with the electric heating rod, reshapes the scrap material into strips. To facilitate cutting the strips into granules, a cutting unit 4 is also included. The cutting unit 4 includes a limiting tube 41, a cutting motor 42, and a cutting blade 43. The limiting tube 41 is located in the inner cavity of the housing 1 and is welded to the housing 1. One end of the limiting tube 41 is directly opposite the extrusion channel, and the other end is connected to the discharge port.

[0063] Reference Figure 4The cutting motor 42 is located inside the limiting tube 41. The base of the cutting motor 42 is connected and fixed to the limiting tube 41 by a mounting bracket. The output shaft of the cutting motor 42 is aligned with the long side of the limiting tube 41. The output shaft of the cutting motor 42 is coaxially keyed with the cutting blade 43. The cutting blade 43 is located inside the limiting tube 41 and is offset from the limiting tube 41.

[0064] Reference Figure 5 and Figure 6 In order to transport the cut granular products to the mixing tank, a discharge unit 6 is also provided. The discharge unit 6 includes a blower 61 and a conveying pipe 62. One end of the conveying pipe 62 is connected to the air outlet flange of the blower 61, and the other end of the conveying pipe 62 is used to connect to the inlet flange of the mixing tank. The conveying pipe 62 is connected to the shell 1 through a flange, and the inner cavity of the conveying pipe 62 is connected to the inner cavity of the limiting pipe 41.

[0065] Reference Figure 7 The conveying pipe 62 has a rectangular cross-section. A rotating baffle 63 is hinged to the top wall of the conveying pipe 62. The rotating baffle 63 is located between the connection between the conveying pipe 62 and the limiting pipe 41 and the fan 61. The fan 61 blows air into the conveying pipe 62, which drives the rotating baffle 63 to rotate and block the connection between the conveying pipe 62 and the limiting pipe 41, so as to reduce the possibility of cold air backflow affecting the posture of the strip during material conveying.

[0066] Reference Figure 7 To prevent particulate products from entering the air outlet of the fan 61, at least one baffle 64 is welded on the conveying pipe 62. When the rotating baffle 63 hangs down naturally, one side of the rotating baffle 63 abuts against the baffle 64, and the baffle 64 is located on the side of the rotating baffle 63 closer to the fan 61.

[0067] Reference Figure 8 and Figure 9 When the extrusion roller 2 rotates too fast, in order to prevent the operator from being pulled into the housing 1 and injured when feeding, a feeding unit 5 is also included. The feeding unit 5 includes a feeding hopper 51, a connecting pipe 52 and at least one reciprocating belt 53. One end of the connecting pipe 52 is welded to the lower outlet of the feeding hopper 51, and the other end is welded to the housing 1. The inner cavity of the connecting pipe 52 is connected to the feeding port. The feeding hopper 51 is conical, and the feeding port is located above the connecting pipe 52.

[0068] Reference Figure 9Two pulleys 54 are provided inside the reciprocating belt 53. The pulleys 54 are rotatably connected to the connecting pipe 52, and the pulleys 54 are frictionally connected to the reciprocating belt 53. Multiple traction rods 55 are bolted to the reciprocating belt 53. The multiple traction rods 55 are arranged along the long side of the reciprocating belt 53. A relief groove 521 is opened on the connecting pipe 52 from the feed hopper 51 side to the feed port side. The traction rods 55 pass through the relief groove 521 and extend into the inner cavity of the connecting pipe 52. The traction rods 55 are staggered from the connecting pipe 52.

[0069] Reference Figure 9 To reduce the risk of edge material detaching from the connecting pipe 52 via the relief groove 521, the working section of the reciprocating belt 53 is embedded in the relief groove 521, and a sliding gap is left between the reciprocating belt 53 and the groove wall of the relief groove 521. In this application, the extrusion wheel 2 and the pulley 54 can be driven manually or by a motor. In this embodiment, in order to automate the edge material recycling and reduce manpower input, both the extrusion wheel 2 and the pulley 54 are driven by a motor. In this application, the reciprocating belt 53 can be one, two, or three. In this embodiment, the number of reciprocating belts 53 is set to two, and the two reciprocating belts 53 are distributed along the axial direction of the extrusion wheel 2.

[0070] The implementation principle of the waterproof membrane edge material recycling device in this application embodiment is as follows: First, the edge material of the waterproof membrane is collected, and an electric heating rod is powered by an external power source. The electric heating rod emits heat and radiates it to the extrusion roller 2 to preheat the extrusion roller 2 so that its temperature is lower than the melting point of the edge material. Then, the edge material is put into the feed hopper 51. Under its own gravity, the edge material moves along the long side of the connecting pipe 52. At the same time, the motor drives the reciprocating belt 53 through the pulley 54. The reciprocating belt 53 drives the traction rod 55 to pull the edge material from one side of the feed hopper 51 to the feeding port side. Under its own gravity, the edge material passes through the feeding port and enters the plastic extrusion channel between the two extrusion rollers 2. During the extrusion process, the heat on the extrusion roller 2 is transferred to the edge material, making the surface of the edge material slightly sticky. Combined with the extrusion of the extrusion roller 2, the scrap edge material is aggregated into strips.

[0071] Then, an external power supply provides power to the cutting motor 42. The output shaft of the cutting motor 42 drives the cutting blade 43 to rotate and cut the strip to obtain granular finished products. The granular finished products fall into the conveying pipe 62. After a period of time, the fan 61 turns on to blow air into the conveying pipe 62. The air force causes the rotating baffle 63 to rotate and block the connection between the conveying pipe 62 and the limiting pipe 41. It also drives the granular products to enter the mixing tank along the direction of the conveying pipe 62. At the same time as conveying, the granular products are cooled down, reducing the possibility of the granular products sticking together and forming clumps.

[0072] Secondly, embodiments of this application disclose a method for recycling edge materials of waterproof membrane, including...

[0073] S1: Edge trimming and collection: The waterproof membrane is trimmed using an edge trimming device, and the trimmed edges are collected.

[0074] S2: Preheating of extrusion roller 2: An external power supply provides electrical energy for the electric heating rod to work. The electric heating rod outputs heat and radiates it to the extrusion roller 2 to preheat the extrusion roller 2. The temperature of the extrusion roller 2 is detected by a temperature sensor. The power of the electric heating rod is controlled by a CNC box so that the temperature of the extrusion roller 2 is always lower than the melting point of the edge material.

[0075] S3: Plastic bonding: The edge material is extruded and shaped by the extrusion roller 2, and the heat transfer on the extrusion roller 2 makes the surface of the edge material sticky, thus achieving plastic bonding of the edge material to obtain a strip.

[0076] S4: Cutting into granules: The strip-shaped body is cut into granular finished products by cutting unit 4;

[0077] S5: Cold air feeding: The fan 61 is used to transport the cut granular finished product through the pipeline to the mixing tank for storage and later use.

[0078] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for recycling edge material of waterproof membrane, characterized in that: include The housing (1) has a feeding port at the upper end and a discharge port at the lower end. Two extrusion rollers (2) are rotatably connected to the housing (1), and the two extrusion rollers (2) form at least one molding extrusion channel; Heating unit (3), the heating unit (3) is installed on the housing (1), and the heating end of the heating unit (3) extends into the inner cavity of the extrusion wheel (2) for heating the extrusion wheel (2), and the temperature of the extrusion wheel (2) is lower than the melting point of the edge material; A cutting unit (4) is connected to the housing (1) and located below the extrusion gap; It also includes a feeding unit (5), which includes a feeding hopper (51) that is conical and located above the feeding port. A connecting pipe (52) is provided, one end of which is connected to the feed hopper (51) and the other end is connected to the housing (1), and the connecting pipe (52) is coaxially arranged with the feed port; At least one reciprocating belt (53) is provided, and two pulleys (54) are connected inside the reciprocating belt (53). The pulleys (54) are rotatably connected to the connecting pipe (52). Multiple traction rods (55) are connected to the reciprocating belt (53). The multiple traction rods (55) are arranged along the long side of the reciprocating belt (53). A relief groove (521) is provided on the connecting pipe (52) from the side of the feed hopper (51) to the side of the feed port. The traction rods (55) pass through the relief groove (521) and extend into the inner cavity of the connecting pipe (52). Driven by the reciprocating belt (53), they move along the opening direction of the relief groove (521). The working section of the reciprocating belt (53) is embedded in the relief groove (521), and a sliding gap is left between the reciprocating belt (53) and the groove wall of the relief groove (521); The cutting unit (4) includes: a limiting tube (41), the limiting tube (41) is located inside the housing (1), and the limiting tube (41) is connected to the housing (1). The upper opening of the limiting tube (41) faces the plastic extrusion channel, and the lower end is used to communicate with the discharge port. A cutting motor (42) is connected to the limiting tube (41), and a cutting blade (43) is coaxially connected to the output shaft of the cutting motor (42). The cutting blade (43) is located inside the limiting tube (41) and is offset from the limiting tube (41). It also includes a discharge unit (6), which includes a fan (61) and a conveying pipe (62); One end of the conveying pipe (62) is connected to the air outlet of the blower (61), and the other end is used to connect to the mixing tank. The conveying pipe (62) is connected to the shell (1), and the inner cavity of the conveying pipe (62) is connected to the inner cavity of the limiting pipe (41).

2. The waterproof membrane edge recycling device according to claim 1, characterized in that: A rotating baffle (63) is rotatably connected inside the conveying pipe (62). The fan (61) blows air into the conveying pipe (62) so that the rotating baffle (63) rotates and blocks the connection between the conveying pipe (62) and the limiting pipe (41).

3. The waterproof membrane edge recycling device according to claim 2, characterized in that: At least one stop (64) is connected to the conveying pipe (62). When the rotating baffle (63) hangs down naturally, the rotating baffle (63) abuts against the stop (64), and the stop (64) is located on the side of the rotating baffle (63) closer to the fan (61).

4. A method for recycling edge materials of waterproof membrane, characterized in that: The waterproof membrane edge recycling device according to any one of claims 1-3 includes: S1: Edge material cutting and collection; S2: Preheating of extrusion roller (2): The extrusion roller (2) is preheated by heating unit (3), and the temperature of the extrusion roller (2) is controlled to always be lower than the melting point of the edge material; S3: Plastic bonding: The edge material is extruded and shaped by the extrusion roller (2), and the surface of the edge material is made sticky by the heat transfer on the extrusion roller (2), so as to achieve plastic bonding of the edge material to obtain a strip; S4: Cut into granules: The strip is cut into granules by the cutting unit (4).

5. The method for recycling edge material of waterproof membrane according to claim 4, characterized in that: Also includes: S5: Cold air feeding: The granular finished product obtained by cutting is transported to the mixing tank through the pipeline by the blower (61) for storage and later use.

Images