A double screw extrusion device for hollow plate production

Abstract

The application relates to the technical field of extrusion equipment, and particularly discloses a double-screw extrusion equipment for hollow plate production, which comprises a mixing pool, the inner wall side of the mixing pool is fixedly connected with a stirring device, the inner wall bottom center position of the mixing pool is fixedly connected with a heating assembly, the side of the mixing pool located on one side of the heating assembly is connected with an import device, the side of the mixing pool located on the side far from the import device is connected with an extrusion pipe, the bottom of the mixing pool is penetrated and fixedly connected with an air extraction assembly, the driving shaft of a first motor is fixedly connected with a driving gear, the side of the first motor is fixedly connected with a gear support, the side of the driving gear is engaged with a first gear, the side of the first gear is fixedly connected with stirring blades, and the side of the first gear is rotatably connected with an import assembly. The double-screw extrusion equipment for hollow plate production can repeatedly mix and uniformly stir raw materials.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of extrusion equipment, in particular to a double-screw extrusion equipment for hollow plate production. BACKGROUND

[0002] The hollow plate, also known as a lattice plate or a Wan Tong plate, is a new type of plastic plate material with light weight, non-toxicity, moisture resistance, corrosion resistance, aging resistance and high strength. The typical structure is that the upper and lower surfaces are flat plates, and the middle part is supported by regular rib columns to form a hollow structure. Such a structure has excellent compression and bending resistance under the same weight, and is widely used in fields such as logistics turnover boxes, advertising decoration, industrial packaging, building partitions and agricultural greenhouses. In the early development of hollow plate production, a single-screw extruder was the mainstream production equipment. Its working principle is to transport, compress, melt and homogenize the plastic raw material through the rotation of the screw, and finally extrude into a shape through a die. However, with the increasing requirements of the market for the quality, performance and production efficiency of the hollow plate, the single-screw extrusion equipment gradually exposes the following technical bottlenecks and inherent defects. The single screw mainly relies on barrel heating and screw shearing to generate melting, and its mixing capacity is limited. For formulations that need to be filled with a large amount (such as high proportion of calcium carbonate) or add multiple additives, it is difficult to achieve sufficient and uniform dispersion of each component. Uneven mixing can cause color difference, crystal points and stripes on the surface of the hollow plate, and inconsistent internal mechanical properties, which can easily cause the rib column to break.

[0003] The single screw mainly relies on barrel heating and screw shearing to generate melting, and its mixing capacity is limited. For formulations that need to be filled with a large amount or add multiple additives, it is difficult to achieve sufficient and uniform dispersion of each component. SUMMARY

[0004] To solve the above technical problems, the application is implemented by the following technical scheme: a double-screw extrusion equipment for hollow plate production, comprising a mixing pool, the inner wall side of the mixing pool is fixedly connected with a stirring device, the inner wall bottom center position of the mixing pool is fixedly connected with a heating assembly, the side of the mixing pool located on one side of the heating assembly is communicated with a leading-in device, the side of the mixing pool located on the side away from the leading-in device is communicated with an extrusion pipe, the bottom of the mixing pool penetrates and is fixedly connected with a gas extraction assembly, the bottom of the mixing pool is fixedly connected with an equipment support, the inner wall of the equipment support is fixedly connected with a conveying roller, and the extrusion pipe is arranged at a position above the conveying roller.

[0005] The stirring device comprises a first motor, a driving shaft of the first motor is fixedly connected with a driving gear, a side surface of the first motor is fixedly connected with a gear support, a side surface of the driving gear is engaged with a first gear, a side surface of the first gear is fixedly connected with a stirring blade, a side surface of the first gear is rotatably connected with an introduction assembly, a side surface of the driving gear away from the first gear is engaged with a second gear, a side surface of the second gear is fixedly connected with a mixing blade, a side surface of the first gear is rotatably connected with a side surface of the gear support, a side surface of the first motor is fixedly connected with a side surface of a mixing pool, a side surface of the introduction assembly is fixedly connected with a side surface of the mixing pool, the stirring blade is arranged on one side of a heating assembly, the mixing blade is arranged on a side of the heating assembly away from the stirring blade, the first motor, the driving shaft of the first motor rotates to drive the driving gear to rotate, the driving gear rotates to drive the first gear to rotate, the driving gear rotates to drive the second gear to rotate, the first gear rotates to drive the stirring blade to rotate, the second gear drives the mixing blade to rotate, raw materials are introduced through the introduction device and enter the mixing pool on one side of the mixing blade to be stirred and mixed, and the raw materials are stirred and heated through the heating assembly, the raw materials are guided and extruded by the mixing blade to enter one side of the stirring blade, thereby driving the raw materials to move into the inside of the extrusion pipe to be extruded, thereby repeatedly stirring and extruding the raw materials, so that the raw materials are uniformly mixed, and problems such as insufficient stirring caused by single transmission are prevented.

[0006] Preferably, the stirring blade comprises a rotating base, a side surface of the rotating base is fixedly connected with a spiral blade, a side surface of the rotating base is provided with a feeding hole, and a side surface of the rotating base is fixedly connected with a side surface of the first gear.

[0007] Preferably, the introduction assembly comprises a conical introduction pipe, a side surface of the conical introduction pipe is rotatably connected with a rotating pipe, a side surface of the rotating pipe is communicated with a feeding pipe, a side surface of the feeding pipe is provided with a discharging hole, a side surface of the conical introduction pipe away from the rotating pipe is communicated with a feeding connector, a side surface of the conical introduction pipe is fixedly connected with a side surface of the mixing pool, the feeding pipe penetrates through a side surface of the spiral blade and is fixedly connected with the spiral blade, and the feeding pipe penetrates through a side surface of the first gear and is fixedly connected with the first gear, the first gear rotates to drive the rotating base to rotate, the rotating base rotates to drive the spiral blade to rotate, raw materials are introduced through the feeding connector and flow into the inside of the feeding pipe along the inside of the conical introduction pipe to be mixed with the stirred raw materials through the discharging hole, so as to ensure the quality of stirring and mixing, and the feeding pipe is driven to move by the spiral blade, so as to drive the feeding pipe to move, the feeding pipe releases the raw materials, and the mixing degree of the raw materials is increased through the feeding pipe in the process of moving the raw materials by the spiral blade, so that the raw materials are uniformly stirred and mixed.

[0008] Preferably, the heating assembly comprises a partition base, the top of the partition base is fixedly connected with a partition top, the side of the partition base is penetrated and fixedly connected with a heating rod, the side of the partition base is provided with a transmission hole, the bottom of the partition base is fixedly connected with the inner wall bottom of the mixing pool, the spiral blade is arranged on the side of the partition base, and the mixing blade is arranged on the side of the partition base away from the spiral blade.

[0009] Preferably, the feeding device comprises a conical feeding pipe, the side of the conical feeding pipe is communicated with a communication pipe, the top of the communication pipe is communicated with a material guide pipe, the inner wall of the material guide pipe is fixedly connected with a dispersion plate, the bottom of the dispersion plate is fixedly connected with a dispersion pointed top, the bottom of the dispersion plate is fixedly connected with a guide plate, the bottom of the dispersion plate is fixedly connected with a spiral guide plate, one end of the conical feeding pipe away from the communication pipe is communicated with the side of the mixing pool, raw materials are fed through the top of the material guide pipe, the raw materials descend along the inner wall of the material guide pipe, the raw materials are guided by the dispersion plate and enter the top of the dispersion pointed top for diffusion and enter the side of the spiral guide plate, the arc design of the top of the spiral guide plate increases the tangential force in the descending process of the raw materials, so that the materials are mixed in the feeding stage, the raw materials move along the side of the partition base under the guidance of the mixing blade, the heating rod heats and melts the raw materials, the materials move along the side of the partition base and pass through the transmission hole under the extrusion to enter the side of the spiral blade, so that the materials are mixed and stirred in the inside of the mixing pool, thereby facilitating the uniform stirring of the materials.

[0010] Preferably, the air extraction assembly comprises an air extraction pipe, the side of the air extraction pipe is provided with an air extraction hole, the side of the air extraction pipe is communicated with an air guide pipe, the inner wall side of the air guide pipe is rotatably connected with an air extraction fan, the air extraction pipe extends into the inside of the spiral blade, and the air guide pipe penetrates the side of the conical feeding pipe and is fixedly connected with the conical feeding pipe.

[0011] Preferably, the conveying roller comprises a rotating roller, a forward guide groove is formed in the top of the rotating roller, a reverse guide groove is formed in the position of the top of the rotating roller on the side of the forward guide groove, the side surface of the rotating roller is rotationally connected with the inner wall side surface of the equipment support, the air suction fan is started, the air suction fan forms negative pressure in the inside of the air guide pipe, the negative pressure in the inside of the air guide pipe reduces the air pressure in the inside of the air suction pipe, so that the air in the inside of the material is guided into the inside of the air guide pipe along the inside of the air suction pipe, thereby sucking the air during the material stirring stage, and the spiral blade continuously scrapes the side surface of the air suction pipe under the rotation effect, thereby reducing the probability of the material solidifying on the side surface of the air suction pipe, thereby continuously sucking the inside of the raw material, the rotating roller is started, the rotating roller rotates to drive the forward guide groove and the reverse guide groove to rotate, thereby driving the mold to move along the top of the rotating roller, and keeping the mold at the center position of the top of the rotating roller under the guidance of the forward guide groove and the reverse guide groove.

[0012] The application provides a double-screw extrusion device for hollow plate production.

[0013] 1. The double-screw extrusion device for hollow plate production is provided with a first motor, the driving shaft of the first motor rotates to drive the driving gear to rotate, the driving gear rotates to drive the first gear to rotate, the driving gear rotates to drive the second gear to rotate, the first gear rotates to drive the stirring blade to rotate, and the second gear drives the mixing blade to rotate; the raw material is introduced into the mixing pool through the introduction device and enters one side of the mixing blade, so as to be stirred and mixed, and the raw material is stirred and heated through the heating assembly; under the guidance and extrusion of the mixing blade, the raw material enters one side of the stirring blade, so as to move into the inside of the extrusion pipe and be extruded, thereby repeatedly stirring and extruding the raw material, so as to facilitate uniform mixing of the raw material and prevent problems such as insufficient stirring caused by single transmission.

[0014] 2. The double-screw extrusion device for hollow plate production is provided with a rotating base, the first gear rotates to drive the rotating base to rotate, and the rotating base rotates to drive the spiral blade to rotate; the raw material is introduced into the inside of the feeding pipe through the feeding connector and the inside of the conical introduction pipe, and is mixed with the stirred raw material through the discharge hole and the feeding pipe, so as to ensure the quality of stirring and mixing, and the feeding pipe moves under the driving of the spiral blade, so as to move the feeding pipe; the feeding pipe releases the raw material, and the mixing degree of the raw material is increased through the feeding pipe during the movement of the raw material driven by the spiral blade, so that the raw material is uniformly stirred and mixed.

[0015] 3. This twin-screw extruder for hollow board production is equipped with a feed pipe. The raw material is introduced through the top of the feed pipe and descends along the inner wall of the feed pipe. The raw material is then guided by the dispersing plate to the top of the dispersing tip for diffusion and enters the side of the spiral guide plate. The arc-shaped design of the top of the spiral guide plate increases the tangential force during the descent of the raw material, thereby facilitating mixing during the introduction stage. Under the guidance of the mixing blades, the raw material moves along the side of the separator base. The heating rod heats and melts the raw material. The material moves along the side of the separator base and, under the action of extrusion, passes through the transfer hole and enters the side of the spiral blades, thereby mixing and stirring the material inside the mixing tank, which facilitates uniform mixing of the material.

[0016] 4. This twin-screw extruder for hollow board production is equipped with an exhaust fan. The exhaust fan draws air to create a negative pressure inside the air guide pipe, reducing the air pressure inside the exhaust pipe. This draws air from inside the material into the exhaust pipe, thus extracting air during the material mixing stage. The rotating helical blades continuously scrape the sides of the exhaust pipe, reducing the probability of material solidifying on the sides. This continuous extraction of air from the raw material's interior, along with the rotation of the rotating roller, drives the forward and reverse guide grooves to rotate. This moves the die along the top of the rotating roller and, guided by the forward and reverse guide grooves, keeps it at the center of the top of the rotating roller. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the twin-screw extrusion equipment for hollow board production according to the present invention;

[0018] Figure 2 This is a schematic diagram of the stirring device of the present invention;

[0019] Figure 3 This is a schematic diagram of the stirring blade structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the imported component structure of the present invention;

[0021] Figure 5 This is a schematic diagram of the heating component structure of the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of the introductory device of the present invention;

[0023] Figure 7 This is a schematic diagram of the air extraction component structure of the present invention;

[0024] Figure 8 This is a schematic diagram of the conveyor roller structure of the present invention.

[0025] In the diagram: 1. Mixing tank; 2. Stirring device; 3. Heating assembly; 4. Inlet device; 5. Extrusion pipe; 6. Vacuum assembly; 7. Equipment support; 8. Conveyor roller; 201. First motor; 202. Drive gear; 203. Gear support; 204. First gear; 205. Stirring blade; 206. Inlet assembly; 207. Second gear; 208. Mixing blade; 2051. Rotating base; 2052. Spiral blade; 2053. Feed hole; 2061. Conical inlet pipe; 2062. Rotating pipe; 206... 3. Feed pipe; 2064. Discharge hole; 2065. Feed connector; 301. Separator base; 302. Separator top seat; 303. Heating rod; 304. Transfer hole; 401. Conical feed pipe; 402. Connecting pipe; 403. Guide pipe; 404. Dispersion plate; 405. Dispersion tip; 406. Guide plate; 407. Spiral guide plate; 601. Air extraction pipe; 602. Air extraction hole; 603. Air guide pipe; 604. Air extraction fan; 801. Rotating roller; 802. Forward guide groove; 803. Reverse guide groove. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] For the first embodiment, please refer to... Figures 1-2 The present invention provides a technical solution: a twin-screw extrusion device for hollow board production, comprising a mixing tank 1, a stirring device 2 fixedly connected to the inner wall side of the mixing tank 1, a heating component 3 fixedly connected to the bottom center of the inner wall of the mixing tank 1, an inlet device 4 connected to the side of the mixing tank 1 on one side of the heating component 3, an extrusion pipe 5 connected to the side of the mixing tank 1 on the side away from the inlet device 4, an air extraction component 6 connected through and fixedly connected to the bottom of the mixing tank 1, an equipment support 7 fixedly connected to the bottom of the mixing tank 1, a conveying roller 8 fixedly connected to the inner wall of the equipment support 7, and the extrusion pipe 5 positioned above the conveying roller 8;

[0028] The stirring device 2 includes a first motor 201, a drive gear 202 fixedly connected to the drive shaft of the first motor 201, a gear bracket 203 fixedly connected to the side of the first motor 201, a first gear 204 meshing with the side of the drive gear 202, a stirring blade 205 fixedly connected to the side of the first gear 204, an inlet component 206 rotatably connected to the side of the first gear 204, a second gear 207 meshing with the side of the drive gear 202 away from the first gear 204, a mixing blade 208 fixedly connected to the side of the second gear 207, a side of the first gear 204 rotatably connected to the side of the gear bracket 203, a side of the first motor 201 fixedly connected to the side of the mixing tank 1, a side of the inlet component 206 fixedly connected to the side of the mixing tank 1, a stirring blade 205 disposed on one side of the heating component 3, and a mixing blade 208 disposed on the side of the heating component 3 away from the stirring blade 205.

[0029] The first motor 201 is started, and the drive shaft of the first motor 201 rotates, driving the drive gear 202 to rotate. The drive gear 202 rotates, driving the first gear 204 to rotate, which in turn drives the second gear 207 to rotate. The first gear 204 rotates, driving the stirring blade 205 to rotate, and the second gear 207 rotates the mixing blade 208. The raw material is introduced through the inlet device 4 and enters the mixing tank 1 located on one side of the mixing blade 208, where it is stirred and mixed. The heating component 3 stirs and heats the raw material. Under the guiding and extruding action of the mixing blade 208, the raw material is driven into one side of the stirring blade 205, thus moving the raw material into the extrusion tube 5 for extrusion. This repeated stirring and extrusion of the raw material facilitates uniform mixing and prevents problems such as insufficient mixing caused by a single drive.

[0030] Second embodiment, please refer to Figures 1-4 Based on the first embodiment, the present invention provides a technical solution: the stirring blade 205 includes a rotating base 2051, a spiral blade 2052 is fixedly connected to the side of the rotating base 2051, a feed hole 2053 is opened on the side of the rotating base 2051, the side of the rotating base 2051 is fixedly connected to the side of the first gear 204, and the spiral blade 2052 is located on one side of the heating assembly 3.

[0031] The inlet assembly 206 includes a tapered inlet tube 2061, a rotating tube 2062 rotatably connected to the side of the tapered inlet tube 2061, a feed tube 2063 connected to the side of the rotating tube 2062, a discharge hole 2064 opened on the side of the feed tube 2063, a feed connector 2065 connected to the side of the tapered inlet tube 2061 away from the rotating tube 2062, a side of the tapered inlet tube 2061 fixedly connected to the side of the mixing tank 1, a feed tube 2063 passing through the side of the spiral blade 2052 and fixedly connected to the spiral blade 2052, and a feed tube 2063 passing through the side of the first gear 204 and fixedly connected to the first gear 204.

[0032] The rotation of the first gear 204 drives the rotation of the rotating base 2051, which in turn drives the rotation of the spiral blades 2052. The raw material is introduced through the feed connector 2065 and flows along the inside of the conical inlet pipe 2061 into the feed pipe 2063. It is then mixed with the stirring material through the discharge hole 2064, thus ensuring the quality of the mixing. Driven by the spiral blades 2052, the feed pipe 2063 is moved, releasing the raw material. During the movement of the raw material driven by the spiral blades 2052, the mixing degree of the raw material is increased through the feed pipe 2063, thereby making the raw material evenly mixed.

[0033] Third embodiment, please refer to Figures 1-6 Based on the second embodiment, the present invention provides a technical solution: the heating component 3 includes a partition base 301, a partition top seat 302 is fixedly connected to the top of the partition base 301, a heating rod 303 is fixedly connected through and to the side of the partition base 301, a transfer hole 304 is opened on the side of the partition base 301, the bottom of the partition base 301 is fixedly connected to the bottom of the inner wall of the mixing tank 1, a spiral blade 2052 is disposed on the side of the partition base 301, and a mixing blade 208 is disposed on the side of the partition base 301 away from the spiral blade 2052.

[0034] The feeding device 4 includes a conical feed pipe 401, a connecting pipe 402 connected to the side of the conical feed pipe 401, a guide pipe 403 connected to the top of the connecting pipe 402, a dispersing plate 404 fixedly connected to the inner wall of the guide pipe 403, a dispersing tip 405 fixedly connected to the bottom of the dispersing plate 404, a guide plate 406 fixedly connected to the bottom of the dispersing plate 404, and a spiral guide plate 407 fixedly connected to the bottom of the dispersing plate 404. The end of the conical feed pipe 401 away from the connecting pipe 402 is connected to the side of the mixing tank 1.

[0035] The raw material is introduced through the top of the feed pipe 403 and descends along the inner wall of the feed pipe 403. The raw material is diverted and guided by the dispersing plate 404 and enters the top of the dispersing tip 405 for diffusion and enters the side of the spiral guide plate 407. The arc-shaped design of the top of the spiral guide plate 407 increases the tangential force during the descent of the raw material, thereby facilitating the mixing of the material in the introduction stage. Under the guidance of the mixing blade 208, the raw material moves along the side of the partition base 301. The heating rod 303 heats and melts the raw material. The material moves along the side of the partition base 301 and, under the action of extrusion, passes through the transfer hole 304 and enters the side of the spiral blade 2052, thereby mixing and stirring the material inside the mixing tank 1, which facilitates the uniform mixing of the material.

[0036] For the fourth embodiment, please refer to [link / reference]. Figures 1-8 Based on the third embodiment, the present invention provides a technical solution: the air extraction assembly 6 includes an air extraction pipe 601, an air extraction hole 602 is provided on the side of the air extraction pipe 601, a guide pipe 603 is connected to the side of the air extraction pipe 601, an air extraction fan 604 is rotatably connected to the inner wall side of the guide pipe 603, the air extraction pipe 601 extends into the interior of the spiral blade 2052, and the guide pipe 603 passes through the side of the conical feed pipe 401 and is fixedly connected to the conical feed pipe 401.

[0037] The conveyor roller 8 includes a rotating roller 801. A forward guide groove 802 is provided on the top of the rotating roller 801. A reverse guide groove 803 is provided on the top of the rotating roller 801 at one side of the forward guide groove 802. The side of the rotating roller 801 is rotatably connected to the inner wall side of the equipment support 7.

[0038] The exhaust fan 604 is activated, creating a negative pressure inside the air guide pipe 603. This negative pressure reduces the air pressure inside the exhaust pipe 601, drawing air from the material into the exhaust pipe 603. This process extracts air during the material mixing stage. The rotating spiral blades 2052 continuously scrape the sides of the exhaust pipe 601, reducing the probability of material solidifying on the sides. This continuous extraction of air from the raw material's interior is achieved. The rotating roller 801 is then activated, causing the forward guide groove 802 and the reverse guide groove 803 to rotate. This moves the mold along the top of the rotating roller 801, maintaining it at the center of the top of the roller 801 under the guidance of the forward and reverse guide grooves.

[0039] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A twin-screw extruder for producing hollow boards, characterized in that: The system includes a mixing tank (1), a stirring device (2) is fixedly connected to the inner wall side of the mixing tank (1), a heating component (3) is fixedly connected to the bottom center of the inner wall of the mixing tank (1), an inlet device (4) is connected to the side of the mixing tank (1) on the side of the heating component (3), an extrusion pipe (5) is connected to the side of the mixing tank (1) on the side away from the inlet device (4), an air extraction component (6) is fixedly connected to the bottom of the mixing tank (1), an equipment bracket (7) is fixedly connected to the bottom of the mixing tank (1), a conveying roller (8) is fixedly connected to the inner wall of the equipment bracket (7), and the extrusion pipe (5) is located above the conveying roller (8). The stirring device (2) includes a first motor (201), a drive gear (202) is fixedly connected to the drive shaft of the first motor (201), a gear bracket (203) is fixedly connected to the side of the first motor (201), a first gear (204) meshes with the side of the drive gear (202), a stirring blade (205) is fixedly connected to the side of the first gear (204), and an inlet assembly (206) is rotatably connected to the side of the first gear (204). The side of the drive gear (202) away from the first gear (204) meshes with... The assembly includes a second gear (207), a mixing blade (208) is fixedly connected to the side of the second gear (207), the side of the first gear (204) is rotatably connected to the side of the gear bracket (203), the side of the first motor (201) is fixedly connected to the side of the mixing tank (1), the side of the inlet assembly (206) is fixedly connected to the side of the mixing tank (1), the stirring blade (205) is disposed on one side of the heating assembly (3), and the mixing blade (208) is disposed on the side of the heating assembly (3) away from the stirring blade (205). The heating assembly (3) includes a partition base (301), a partition top seat (302) is fixedly connected to the top of the partition base (301), a heating rod (303) is fixedly connected through the side of the partition base (301), and a transfer hole (304) is opened on the side of the partition base (301).

2. The twin-screw extruder for hollow board production according to claim 1, characterized in that: The stirring blade (205) includes a rotating base (2051), a spiral blade (2052) is fixedly connected to the side of the rotating base (2051), a feed hole (2053) is opened on the side of the rotating base (2051), the side of the rotating base (2051) is fixedly connected to the side of the first gear (204), and the spiral blade (2052) is located on one side of the heating assembly (3).

3. The twin-screw extruder for hollow board production according to claim 2, characterized in that: The inlet assembly (206) includes a tapered inlet tube (2061), a rotating tube (2062) is rotatably connected to the side of the tapered inlet tube (2061), a feed tube (2063) is connected to the side of the rotating tube (2062), a discharge hole (2064) is provided on the side of the feed tube (2063), a feed connector (2065) is connected to the side of the tapered inlet tube (2061) away from the rotating tube (2062), the side of the tapered inlet tube (2061) is fixedly connected to the side of the mixing tank (1), the feed tube (2063) passes through the side of the spiral blade (2052) and is fixedly connected to the spiral blade (2052), and the feed tube (2063) passes through the side of the first gear (204) and is fixedly connected to the first gear (204).

4. The twin-screw extruder for hollow board production according to claim 2, characterized in that: The bottom of the partition base (301) is fixedly connected to the bottom of the inner wall of the mixing tank (1), the spiral blade (2052) is disposed on the side of the partition base (301), and the mixing blade (208) is disposed on the side of the partition base (301) away from the spiral blade (2052).

5. A twin-screw extruder for hollow board production according to claim 1, characterized in that: The inlet device (4) includes a conical feed pipe (401), a connecting pipe (402) connected to the side of the conical feed pipe (401), a guide pipe (403) connected to the top of the connecting pipe (402), a dispersing plate (404) fixedly connected to the inner wall of the guide pipe (403), a dispersing tip (405) fixedly connected to the bottom of the dispersing plate (404), a guide plate (406) fixedly connected to the bottom of the dispersing plate (404), a spiral guide plate (407) fixedly connected to the bottom of the dispersing plate (404), and the end of the conical feed pipe (401) away from the connecting pipe (402) connected to the side of the mixing tank (1).

6. A twin-screw extruder for hollow board production according to claim 2, characterized in that: The air extraction assembly (6) includes an air extraction pipe (601), an air extraction hole (602) is provided on the side of the air extraction pipe (601), a guide pipe (603) is connected to the side of the air extraction pipe (601), and an air extraction fan (604) is rotatably connected to the inner wall side of the guide pipe (603).

7. A twin-screw extruder for hollow board production according to claim 6, characterized in that: The suction pipe (601) extends into the interior of the spiral blade (2052), and the air guide pipe (603) passes through the side of the conical feed pipe (401) and is fixedly connected to the conical feed pipe (401).

8. The twin-screw extruder for hollow board production according to claim 1, characterized in that: The conveying roller (8) includes a rotating roller (801), the top of the rotating roller (801) is provided with a forward guide groove (802), the top of the rotating roller (801) is provided with a reverse guide groove (803) on one side of the forward guide groove (802), and the side of the rotating roller (801) is rotatably connected to the inner wall side of the equipment support (7).

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