Raw material screw extruder for cleaning special material of screw extruder

Abstract

The invention relates to the technical field of screw extruders, and discloses a raw material screw extruder of a special material for screw extruder cleaning, the raw material screw extruder comprises a shell supported and mounted through a rack, the top of the shell is fixedly connected with a hopper, one side of the shell is provided with an extrusion nozzle through a fastening bolt, the front side of the shell is provided with a control system, and the control system is connected with the hopper. An extrusion assembly is arranged in the shell, and a cleaning assembly used for cleaning the extrusion assembly is arranged at the bottom of the inner wall of the shell. According to the raw material screw extruder for cleaning the special material of the screw extruder, through the arrangement of the driving assembly, the two semi-cylindrical shells can be driven to be unfolded or closed, material extrusion work can be conducted through closing of the two semi-cylindrical shells, and on the contrary, separation of an extrusion barrel can be achieved through movement of the two semi-cylindrical shells in the separating direction; and therefore, the inner surface of the extrusion barrel and the outer surface of the screw rod can be conveniently cleaned through the cleaning assembly, and a good self-cleaning function is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of screw extruders, in particular to a raw material screw extruder of special materials for cleaning a screw extruder. Background Art

[0002] In a screw extruder, when a new batch of products is produced, in order to avoid the previous batch of raw materials affecting the color and properties of the products, or when the screw extruder is extruding for a long time, it is often necessary to clean out the residual raw materials in the screw extruder. The Chinese invention patent with publication number CN118478499B discloses a single screw extruder based on plastic, which is convenient for cleaning the device by moving a cleaning block along the inside of the barrel and pushing out the residual materials inside the barrel and on the screw. Compared with the previous disassembly cleaning, it can simplify the process and improve the cleaning efficiency. Moreover, by controlling the movement timing of the cleaning block, the materials in the barrel can be discharged and processed together when the device is processed, thereby reducing the waste of materials.

[0003] In the related art, the existing screw extruder has a small internal space and the screw fills the entire chamber, so there are certain difficulties in the cleaning process. The traditional cleaning method is mostly to disassemble the screw in the extruder for cleaning, but this cleaning method is time-consuming and labor-intensive; the single-screw extruder in the above patent sets a cleaning block in the extrusion chamber, and cooperates with the rotation of the screw to form a reciprocating cleaning work of the cleaning block. Although it has a self-cleaning function, the existence of the cleaning block is easy to affect the normal extrusion work of the extruder, and when there are too many residues on the outer surface of the screw, causing the screw and the cleaning block to be excessively stuck, the two are stuck together, and when the screw rotates, it will drive the cleaning block to rotate, and its cleaning work cannot be achieved, and there are certain cleaning disadvantages. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides a raw material screw extruder for cleaning special materials for screw extruders. Through the setting of a driving component, the two semi-cylindrical shells can be driven to expand or close. The extrusion barrel can be separated by the movement of the two semi-cylindrical shells in the directions away from each other, which facilitates the cleaning of the inner surface of the extrusion barrel and the outer surface of the screw through the cleaning component. It has a good self-cleaning function and solves the problem that the extrusion cavity of the extruder in the prior art is mostly integrated and cannot be disassembled, so that when the screw completely fills the entire cavity, it is not convenient to clean the cavity and the screw, and the screw needs to be removed and cleaned separately.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a raw material screw extruder for cleaning special materials for screw extruders, comprising a shell supported and installed by a frame, a hopper is fixedly connected to the top of the shell, and an extrusion nozzle is installed on one side of the shell by fastening bolts, a control system is arranged on the front of the shell, an extrusion assembly is arranged inside the shell, and a cleaning assembly for cleaning the extrusion assembly is arranged at the bottom of the inner wall of the shell;

[0008] The extrusion assembly includes an extrusion barrel, a screw disposed inside the extrusion barrel, and a motor for rotating and driving the screw;

[0009] The extruder is composed of two semi-cylindrical shells, and the two semi-cylindrical shells are slidably connected to the bottom of the inner wall of the shell through two sliding frames. The outer surfaces of the two semi-cylindrical shells are embedded with arc heating plates, and the top of the shell is provided with a driving component for driving the two semi-cylindrical shells to expand or close.

[0010] Preferably, one end of the screw is rotatably connected to one side of the inner wall of the shell, the motor is fixed to the other side of the shell, and the motor is fixedly connected to one end of the screw;

[0011] One side of the top of the two semi-cylindrical shells is fixedly connected with a semi-circular tube shell, and the bottom end of the hopper extends into the tube cavity formed by the two semi-circular tube shells, and one end of the extrusion nozzle extends into the tube cavity formed by the two semi-cylindrical shells.

[0012] Preferably, a water injection flushing pipe is fixedly connected to one side of the shell, the flushing end of the water injection flushing pipe faces the inner surface of the unfolded semi-cylindrical shell and the outer surface of the screw, and a sewage outlet is opened on one side of the bottom of the shell.

[0013] Preferably, the cleaning assembly comprises a sliding plate which can move up and down, and a cleaning block for cleaning the screw gap is slidably connected to the top of the sliding plate in a transverse sliding manner.

[0014] Preferably, one side of the cleaning block is fixedly connected to an arc-shaped cleaning block for cleaning the inner walls of the two unfolded semi-cylindrical shells via a connecting frame.

[0015] Preferably, the front and back sides of the sliding plate are both hinged with inclined transmission frames, and one end of the two transmission frames is hinged to the inner side walls of the sliding frames on the two semi-cylindrical shells respectively.

[0016] Preferably, the driving assembly includes a hydraulic cylinder fixed to the top of the shell, the telescopic end of the hydraulic cylinder is fixedly connected to a U-shaped frame, both sides of the bottom of the U-shaped frame are fixedly connected to guide plates, the bottom ends of the two guide plates extend to the interior of the shell, and the bottoms of the two guide plates are fixedly connected to extension pieces, and the two guide plates are transmission-connected to the two semi-cylindrical shells via the extension pieces.

[0017] Preferably, the extending member comprises a connecting plate fixed to the bottom of the guide plate, both sides of the connecting plate are hinged with inclined hinge plates, and the bottoms of the two hinge plates are respectively hinged to the tops of the two semi-cylindrical shells.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the present invention provides a raw material screw extruder for cleaning special materials for screw extruder, which has the following beneficial effects:

[0020] 1. The extrusion barrel of the present invention is composed of two semi-cylindrical shells, and the two semi-cylindrical shells are slidably connected to the bottom of the inner wall of the shell body through two sliding frames; with the setting of the driving component, the two semi-cylindrical shells can be opened or closed, and the material extrusion work can be carried out by closing the two semi-cylindrical shells. On the contrary, the separation of the extrusion barrel can be formed by the movement of the two semi-cylindrical shells in the separation direction, so as to facilitate the cleaning of the inner surface of the extrusion barrel and the outer surface of the screw by the cleaning component, and has a good self-cleaning function, which solves the problem that the extrusion cavity of the extruder in the prior art is mostly integrated and cannot be disassembled, so that when the screw completely fills the entire cavity, it is not convenient to clean the cavity and the screw, and the screw needs to be removed and cleaned separately.

[0021] 2. The present invention adopts two sets of transmission frames connected to the sliding frame through the sliding plate, so that the two transmission frames can be driven to move in a fan shape through the relative or separate movement of the two sliding frames on the two semi-cylindrical shells, and then the sliding plate can be driven to move up and down. Through the upward movement of the sliding plate, the cleaning block can be driven to be inserted into the expanded extrusion barrel and contact the outer surface of the screw. It has good transmission function and improves the convenience and orderliness of the self-cleaning of the extruder.

[0022] 3. The present invention drives the U-shaped frame to move up and down through a hydraulic cylinder, and the up and down movement of the U-shaped frame can drive the two guide plates to move up and down, and then the connecting plates in the two extension members can move up and down. The up and down movement of the connecting plates can drive the two hinged plates to move in a fan shape, and then the two semi-cylindrical shells can be driven relative to or apart. The combination of the extrusion barrels can be formed by the movement of the two semi-cylindrical shells in the relative directions, so as to facilitate the extrusion of raw materials. On the contrary, the separation of the extrusion barrels can be formed by the movement of the two semi-cylindrical shells in the directions away from each other, so as to facilitate the cleaning of the inner surface of the extrusion barrel and the outer surface of the screw by the cleaning component. It has a good transmission function and improves the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 For the present invention Figure 1 The rear view of the structure;

[0025] Figure 3 For the present invention Figure 1 Structural sectional view of the middle shell;

[0026] Figure 4 For the present invention Figure 3 A schematic diagram of the combination of the extrusion component, the cleaning component and the driving component;

[0027] Figure 5 For the present invention Figure 4 Structural cross-sectional view of

[0028] Figure 6 For the present invention Figure 4 Schematic diagram of the structure of the middle drive assembly;

[0029] Figure 7 For the present invention Figure 4 Schematic diagram of the combination of the extrusion component and the cleaning component;

[0030] Figure 8 For the present invention Figure 7 A side view of the structure;

[0031] Fig. 9 For the present invention Figure 7 Schematic diagram of the structure of the cleaning component.

[0032] In the figure: 1. Shell; 2. Hopper; 3. Extrusion nozzle; 4. Control system;

[0033] 5. Extrusion assembly; 51. Extrusion barrel; 52. Screw; 53. Motor; 54. Sliding frame; 55. Semicircular tube shell; 56. Arc heating plate;

[0034] 6. Cleaning assembly; 61. Sliding plate; 62. Cleaning block; 63. Arc-shaped cleaning block; 64. Transmission frame;

[0035] 7. Driving assembly; 71. Hydraulic cylinder; 72. U-shaped frame; 73. Guide plate; 74. Connecting plate; 75. Articulated plate;

[0036] 8. Water injection flushing pipe; 9. Sewage outlet. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0038] Embodiment 1:

[0039] See attached Figure 1-9 , a raw material screw extruder for cleaning special materials for screw extruders, comprising a housing 1 supported and installed by a frame, a hopper 2 is fixedly connected to the top of the housing 1, and an extrusion nozzle 3 is installed on one side of the housing 1 by fastening bolts, a control system 4 is arranged on the front of the housing 1, an extrusion assembly 5 is arranged inside the housing 1, and a cleaning assembly 6 for cleaning the extrusion assembly 5 is arranged at the bottom of the inner wall of the housing 1;

[0040] The hopper 2 is used to add raw materials into the extrusion assembly 5 inside the housing 1, and the raw materials are plasticized and orderly extruded through the extrusion assembly 5. The cleaning assembly 6 is used to clean the inside of the extruder after the work is completed, and the control system 4 is used to control the extruder;

[0041] The extrusion assembly 5 includes an extrusion barrel 51, a screw 52 disposed inside the extrusion barrel 51, and a motor 53 for driving the screw 52 to rotate;

[0042] The motor 53 is connected to an external power source and a control switch, and is a forward and reverse motor, and is set up using the connection method and coding method of the prior art, and is used to drive the screw 52 to rotate forward and reverse. Through the rotation of the screw 52, ​​the material inside the extrusion barrel 51 can be pushed to form a material extrusion operation;

[0043] The extrusion barrel 51 is composed of two semi-cylindrical shells, and the two semi-cylindrical shells are slidably connected to the bottom of the inner wall of the shell 1 through two sliding frames 54. The outer surfaces of the two semi-cylindrical shells are embedded with arc-shaped heating plates 56. The top of the shell 1 is provided with a driving component 7 for driving the two semi-cylindrical shells to expand or close.

[0044] The extrusion barrel 51 is composed of two semi-cylindrical shells, and the two semi-cylindrical shells are slidably connected to the bottom of the inner wall of the shell body 1 through two sliding frames 54; with the setting of the driving component 7, the two semi-cylindrical shells can be opened or closed, and the material extrusion work can be carried out by closing the two semi-cylindrical shells. On the contrary, the separation of the extrusion barrel 51 can be formed by the movement of the two semi-cylindrical shells in the separation direction, so as to facilitate the cleaning of the inner surface of the extrusion barrel 51 and the outer surface of the screw 52 by the cleaning component 6. It has good self-cleaning function and solves the problem that the extrusion cavity of the extruder in the prior art is mostly integrated and cannot be disassembled, so that when the screw 52 completely fills the entire cavity, it is not convenient to clean the cavity and the screw 52, ​​and the screw 52 needs to be removed and cleaned separately.

[0045] See attached Figures 1 to 5 , Figure 7 and Figure 8 , one end of the screw rod 52 is rotatably connected to one side of the inner wall of the housing 1, the motor 53 is fixed to the other side of the housing 1, and the motor 53 is fixedly connected to one end of the screw rod 52;

[0046] The motor 53 is connected to an external power source and a control switch, and is a forward and reverse motor, and is set up using the connection method and coding method of the prior art, and is used to drive the screw 52 to rotate forward and reverse. Through the rotation of the screw 52, ​​the material inside the extrusion barrel 51 can be pushed to form a material extrusion operation;

[0047] A semicircular tube shell 55 is fixedly connected to one side of the top of the two semi-cylindrical shells, and the bottom end of the hopper 2 extends into the tube cavity formed by the two semi-circular tube shells 55, and one end of the extrusion nozzle 3 extends into the tube cavity formed by the two semi-cylindrical shells;

[0048] A seal is provided between the two semi-cylindrical shells to improve the sealing effect of the combination of the two semi-cylindrical shells. The bottom end of the hopper 2 is inserted into the tube cavity composed of the two semi-circular tube shells 55, so that when the material is fed through the hopper 2, the material can enter the extrusion barrel 51 and cooperate with the rotation of the screw 52 to form an extrusion operation. One end of the extrusion nozzle 3 is inserted into the tube cavity composed of the two semi-cylindrical shells, so that the material can be extruded through the extrusion nozzle 3 through the rotation of the screw 52.

[0049] See attached Figure 2 and Figure 3 A water injection flushing pipe 8 is fixedly connected to one side of the shell 1, and the flushing end of the water injection flushing pipe 8 faces the inner surface of the unfolded semi-cylindrical shell and the outer surface of the screw 52. A sewage outlet 9 is opened on one side of the bottom of the shell 1;

[0050] The water injection flushing pipe 8 is provided to inject clean water into the interior of the shell 1, and the clean water is used to flush the interior of the unfolded extrusion cylinder 51, thereby further improving the cleaning effect of the interior of the extruder. The sewage outlet 9 is provided to discharge the cleaned sewage and garbage.

[0051] See attached Figures 7 to 9 The cleaning assembly 6 includes a sliding plate 61 that can move up and down, and a cleaning block 62 for cleaning the gap of the screw 52 is slidably connected to the top of the sliding plate 61 in a transverse sliding manner;

[0052] The sliding plate 61 that can be driven up and down can drive the cleaning block 62 to move up and down. The cleaning block 62 can be inserted into the outer surface of the screw 52 by the upward movement. With the rotation of the screw 52, ​​the cleaning block 62 can move horizontally in the gap on the outer surface of the screw 52, ​​thereby cleaning the outer surface of the screw 52.

[0053] Specifically, the two semi-cylindrical shells in the extruder 51 are driven apart by the driving assembly 7 to form an unfolding operation, and then the sliding plate 61 is driven upward so that the cleaning block 62 on the top of the sliding plate 61 is inserted into the thread gap on the outer surface of the screw 52. In conjunction with the rotation of the screw 52, ​​the cleaning block 62 can slide horizontally on the top of the sliding plate 61, thereby synchronously clearing the garbage in the thread gap of the screw 52.

[0054] See attached Figure 7 and Fig. 9 , one side of the cleaning block 62 is fixedly connected to an arc-shaped cleaning block 63 for cleaning the inner walls of the two unfolded semi-cylindrical shells through a connecting frame;

[0055] The arc-shaped cleaning block 63 is provided to clean and scrape the inner walls of the two unfolded semi-cylindrical shells in the extruder 51. The arc-shaped cleaning block 63 is fixedly connected to the cleaning block 62 by a connecting frame, so that the cleaning block 62 can move horizontally left and right, thereby driving the arc-shaped cleaning block 63 to move synchronously in the same direction, thereby forming a self-cleaning operation of the inner walls of the two semi-cylindrical shells.

[0056] The arc-shaped cleaning block 63 has the same cross-sectional shape as the two unfolded semi-cylindrical shells, so that cleaning can be performed by contacting the inner surface of the semi-cylindrical shells.

[0057] The working principle of the raw material screw extruder of the special material for cleaning the screw extruder of the present invention is as follows:

[0058] The material is discharged into the extrusion barrel 51 through the hopper 2, and the screw 52 is driven by the motor 53 to rotate forward and reversely. The material inside the extrusion barrel 51 can be pushed by the rotation of the screw 52. On the way, the raw material is plasticized by two arc-shaped heating plates 56. Finally, the plasticized material can be extruded through the extrusion nozzle 3 with the rotation of the screw 52.

[0059] After the extruder is finished working, the two semi-cylindrical shells in the extrusion barrel 51 are unfolded and driven by the driving assembly 7, so that the screw 52 and the extrusion barrel 51 are completely exposed, and the cleaning block 62 can be driven to move upward by the upwardly driven sliding plate 61, so that the cleaning block 62 is inserted into the thread gap on the outer surface of the screw 52, ​​and the cleaning block 62 can move horizontally in the gap on the outer surface of the screw 52 in coordination with the rotation of the screw 52, ​​thereby cleaning the outer surface of the screw 52;

[0060] The arc-shaped cleaning block 63 is fixedly connected to the cleaning block 62 by a connecting frame, so that when the cleaning block 62 moves upward, the arc-shaped cleaning block 63 can be driven to move upward, so that the arc-shaped cleaning block 63 is aligned and flush with the two unfolded semi-cylindrical shells, and then the cleaning block 62 moves horizontally left and right, which can drive the arc-shaped cleaning block 63 to move synchronously in the same direction, thereby forming a self-cleaning operation of the inner walls of the two semi-cylindrical shells.

[0061] Embodiment 2: Based on embodiment 1, the difference is that;

[0062] See attached Figure 8 and Fig. 9 The front and back sides of the sliding plate 61 are both hinged with inclined transmission frames 64, and one end of the two transmission frames 64 is hinged to the inner side walls of the sliding frames 54 on the two semi-cylindrical shells respectively;

[0063] The sliding plate 61 is connected to the sliding frame 54 by two sets of transmission frames 64, so that the two transmission frames 64 can be driven to move in a fan shape through the relative or separate movement of the two sliding frames 54 on the two semi-cylindrical shells, and then the sliding plate 61 can be driven to move up and down. Through the upward movement of the sliding plate 61, the cleaning block 62 can be driven to be inserted into the expanded extrusion barrel 51 and contact the outer surface of the screw 52, ​​which has a good transmission function and improves the convenience and orderliness of the extruder self-cleaning.

[0064] Embodiment 3: Based on embodiment 1, the difference is that;

[0065] See attached Figure 6The driving assembly 7 includes a hydraulic cylinder 71 fixed to the top of the housing 1, a telescopic end of the hydraulic cylinder 71 is fixedly connected to a U-shaped frame 72, both sides of the bottom of the U-shaped frame 72 are fixedly connected to guide plates 73, the bottom ends of the two guide plates 73 are extended to the inside of the housing 1, and the bottoms of the two guide plates 73 are fixedly connected to extension pieces, and the two guide plates 73 are transmission-connected to the two semi-cylindrical shells through the extension pieces;

[0066] The hydraulic cylinder 71 is connected to an external power source and a control switch, and is used to drive the U-shaped frame 72 to move up and down. The up and down movement of the U-shaped frame 72 can drive the two guide plates 73 to move up and down, and then can drive the extrusion cylinder 51 to close or expand through two extension members.

[0067] The extension member includes a connecting plate 74 fixed to the bottom of the guide plate 73, and both sides of the connecting plate 74 are hinged with inclined hinge plates 75, and the bottoms of the two hinge plates 75 are respectively hinged to the tops of the two semi-cylindrical shells;

[0068] The up and down movement of the connecting plate 74 can drive the two hinged plates 75 to move in a fan shape, and then drive the two semi-cylindrical shells to be driven relative to or apart. The movement of the two semi-cylindrical shells in relative directions can form a combination of the extrusion barrel 51 to facilitate the extrusion of raw materials. On the contrary, the movement of the two semi-cylindrical shells in the separation direction can form the separation of the extrusion barrel 51, which is convenient for cleaning the inner surface of the extrusion barrel 51 and the outer surface of the screw 52 by the cleaning component 6. It has a good transmission function and improves the convenience of operation.

[0069] It should be noted that the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0070] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A raw material screw extruder for cleaning special materials for screw extruders, comprising a housing (1) supported and mounted by a frame, a hopper (2) fixedly connected to the top of the housing (1), and an extrusion nozzle (3) mounted on one side of the housing (1) by fastening bolts, a control system (4) disposed on the front of the housing (1), characterized in that: An extrusion assembly (5) is arranged inside the housing (1), and a cleaning assembly (6) for cleaning the extrusion assembly (5) is arranged at the bottom of the inner wall of the housing (1); The extrusion assembly (5) comprises an extrusion barrel (51), a screw (52) disposed inside the extrusion barrel (51), and a motor (53) for driving the screw (52) to rotate; The extrusion barrel (51) is composed of two semi-cylindrical shells, and the two semi-cylindrical shells are slidably connected to the bottom of the inner wall of the shell (1) through two sliding frames (54), and the outer surfaces of the two semi-cylindrical shells are embedded with arc-shaped heating plates (56). The top of the shell (1) is provided with a driving component (7) for driving the two semi-cylindrical shells to expand or close.

2. The raw material screw extruder of the special material for cleaning the screw extruder according to claim 1, characterized in that: One end of the screw rod (52) is rotatably connected to one side of the inner wall of the housing (1), the motor (53) is fixed to the other side of the housing (1), and the motor (53) is fixedly connected to one end of the screw rod (52); A semi-circular tube shell (55) is fixedly connected to one side of the top of the two semi-cylindrical shells, and the bottom end of the hopper (2) extends into the tube cavity formed by the two semi-circular tube shells (55), and one end of the extrusion nozzle (3) extends into the tube cavity formed by the two semi-cylindrical shells.

3. The raw material screw extruder of the special material for cleaning the screw extruder according to claim 1, characterized in that: A water injection flushing pipe (8) is fixedly connected to one side of the shell (1), and the flushing end of the water injection flushing pipe (8) faces the inner surface of the unfolded semi-cylindrical shell and the outer surface of the screw (52). A sewage outlet (9) is provided on one side of the bottom of the shell (1).

4. The raw material screw extruder of the special material for cleaning the screw extruder according to claim 1, characterized in that: The cleaning assembly (6) comprises a sliding plate (61) that can move up and down, and a cleaning block (62) for cleaning the gap of the screw rod (52) is slidably connected to the top of the sliding plate (61) in a transverse sliding manner.

5. The raw material screw extruder of the special material for cleaning the screw extruder according to claim 4, characterized in that: One side of the cleaning block (62) is fixedly connected to an arc-shaped cleaning block (63) for cleaning the inner walls of the two unfolded semi-cylindrical shells via a connecting frame.

6. The raw material screw extruder of the special material for cleaning the screw extruder according to claim 4, characterized in that: The front and back sides of the sliding plate (61) are both hingedly connected with inclined transmission frames (64), and one end of the two transmission frames (64) is respectively hingedly connected to the inner side walls of the sliding frames (54) on the two semi-cylindrical shells.

7. The raw material screw extruder of the special material for cleaning the screw extruder according to claim 1, characterized in that: The driving assembly (7) comprises a hydraulic cylinder (71) fixed to the top of the housing (1); the telescopic end of the hydraulic cylinder (71) is fixedly connected to a U-shaped frame (72); guide plates (73) are fixedly connected to both sides of the bottom of the U-shaped frame (72); the bottom ends of the two guide plates (73) extend into the interior of the housing (1); and the bottoms of the two guide plates (73) are fixedly connected to extension pieces; the two guide plates (73) are drivingly connected to the two semi-cylindrical shells via the extension pieces.

8. The raw material screw extruder of the special material for cleaning the screw extruder according to claim 8, characterized in that: The extension member comprises a connecting plate (74) fixed to the bottom of the guide plate (73), and both sides of the connecting plate (74) are hinged with inclined hinge plates (75), and the bottoms of the two hinge plates (75) are respectively hinged to the tops of the two semi-cylindrical shells.

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