Double-screw extruder for producing high-modulus agent

Abstract

The invention relates to the technical field of high-modulus agent product processing, in particular to a double-screw extruder for high-modulus agent production, which comprises an extruder body, a storage hopper and a material processing mechanism, a base is fixedly mounted at the bottom of the extruder body, the storage hopper is arranged at the feeding end of the extruder body, and the material processing mechanism is arranged at the feeding end of the extruder body. And a shaping mechanism is arranged at the discharging end of the extruder body. Rotation of a spiral extrusion rod is used as a core power source, power is vertically transmitted to a transmission shaft rod through meshing of a first bevel gear and a second bevel gear, the transmission shaft rod serves as a'power distribution center 'of the whole material treatment mechanism, an induced draft fan is driven upwards through a second transmission, and a material mixing assembly is driven horizontally through a transmission chain. Compared with the prior art, extrusion, material mixing, air exhaust and cooling are synchronously completed, the equipment structure is greatly simplified, the manufacturing cost and energy consumption are reduced, and by means of the linkage design, the pretreatment effect of materials before the materials enter the extruder is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of high modulus agent product processing, and in particular to a double-spiral extruder for high modulus agent production. BACKGROUND

[0002] In material science, modulus is a physical quantity for measuring the ability of a material to resist elastic deformation. In common parlance, it is the stiffness or hardness of a material. The higher the modulus, the less likely the material is to change shape (such as bending or stretching) when subjected to stress. Therefore, high modulus agent is an additive that can significantly improve the modulus of a base material (usually plastic, rubber, composite material, etc.) when added to the base material, making the base material harder, stiffer and less likely to deform. At present, two major problems are prone to occur in the storage hopper: first, the raw materials form a "bridge" phenomenon due to poor flowability, which leads to poor feeding and affects the continuity of production; second, the air and moisture adsorbed on the surface of the raw materials are difficult to discharge during the extrusion process, resulting in defects such as air bubbles and cavities in the final product, which seriously affect the mechanical properties and apparent quality of the product. In terms of energy utilization and functional integration, traditional production lines usually need to configure independent power systems for mixing, air extraction and cooling and other auxiliary functions. This decentralized driving mode not only increases the equipment manufacturing cost and floor area, but also leads to a significant increase in energy consumption, and the coordination between the functional units is poor. In the product forming stage, high modulus agent extruded products are particularly sensitive to the cooling and setting process due to material properties. The traditional cooling method often has problems such as uneven cooling and low cooling efficiency, which can easily lead to warping deformation of the product due to residual thermal stress, affecting the dimensional accuracy and performance of the product. Although some technologies attempt to improve the mixing effect or increase the vacuum degassing device by adding external power devices, these solutions mostly improve isolated problems and lack systematic integration and optimization. They do not address the coordination problem between the process links from the perspective of the overall process chain, and do not fundamentally solve the problem. On the contrary, the equipment structure is more complex, and the operation and maintenance costs are further increased. In addition, the cooling and setting effect of the extruded product is not good, which can easily cause deformation due to residual heat, affecting the product quality. Therefore, a double-spiral extruder for high modulus agent production is proposed. SUMMARY

[0003] In view of the problems in the prior art, the application provides a double-spiral extruder for high modulus agent production.

[0004] The technical scheme adopted by the present application to solve its technical problems is a double-screw extruder for high modulus agent production, which comprises an extruder body, a storage hopper and a material processing mechanism, the bottom of the extruder body is fixedly provided with a base, the storage hopper is arranged on the feeding end of the extruder body, the discharging end of the extruder body is provided with a shaping mechanism, and the shaping mechanism is installed on the base, the top of the base away from the shaping mechanism is provided with a first speed changer, the shell of the first speed changer is fixedly provided with a driving motor on one side through bolts, the output end of the driving motor is connected with the input end of the first speed changer, and the material processing mechanism is installed on the storage hopper and connected with the first speed changer.

[0005] By adopting the above technical scheme, the assembly composed of the extruder body, the storage hopper and the material processing mechanism can provide a double-screw extrusion equipment with good forming quality for the extrusion product containing high modulus agent.

[0006] Specifically, the material processing mechanism comprises two parts, one part is arranged inside the storage hopper, and the other part is arranged outside the storage hopper, the part of the material processing mechanism located inside the storage hopper comprises a cross support seat, a mixing assembly and an air extraction assembly, the cross support seat is welded and fixed around the storage hopper, the mixing assembly is arranged on the cross support seat, and the top of the cross support seat is a slope-shaped chamfer structure, which helps the material to be discharged. The mixing assembly comprises a shaft, the shaft penetrates the middle part of the cross support seat, a material hitting plate is installed on the top of the shaft, and a mixing rod is installed on the bottom of the shaft.

[0007] Specifically, the air extraction assembly is located at the top of one side inside the storage hopper, comprising a box body, the top of the box body is inclined downward along the inner wall of the storage hopper, an opening structure for air inlet is formed on the top of the box body, a trapezoidal filter screen cover is arranged on the inner bottom of the box body, the bottom of the trapezoidal filter screen cover is fixedly connected with the box body through bolts, an exhaust port is integrally connected with the side of the box body close to the inner wall of the storage hopper, the exhaust port penetrates to the outside of the storage hopper, and the box body and the storage hopper are fixedly connected through bolts.

[0008] Specifically, the screw extrusion structure inside the extruder body is two groups of screw extrusion rods, the input shaft of the screw extrusion rod penetrates the shell of the extruder body and is installed with intermeshing gears through a key pin, the output end of the first speed changer is connected with the input shaft of one group of screw extrusion rods through a shaft coupling, the high-speed rotation of the driving motor is speed-changed to low-speed high-torque rotation by the first speed changer, and the rotation is transmitted to the screw extrusion rod, so that the screw extrusion rod rotates, a first bevel gear is fixedly arranged on the input shaft of one group of screw extrusion rods through a key pin, and a second bevel gear perpendicular to the base is meshed on one side of the top of the first bevel gear.

[0009] Specific, the material processing mechanism is located outside the part of the storage hopper includes transmission shaft, second transmission and gas cover, the transmission shaft is vertically installed on the base through the bearing seat, the bottom of the transmission shaft is fixedly installed through the key pin and the second bevel gear, the second transmission is fixedly installed through the bolt and the storage hopper, the input shaft of the second transmission is installed and connected with the top of the transmission shaft through the shaft coupling, the gas cover is installed on the output end outer periphery of the second transmission shell through the bolt, the exhaust fan is installed in the gas cover, the output end of the second transmission is connected with the input shaft of the exhaust fan, the rotating force of the screw extrusion rod is transmitted to the transmission shaft by the first bevel gear and the second bevel gear, and the low speed rotating force of the transmission shaft is converted into high speed rotating force by the second transmission, and is transmitted to the exhaust fan.

[0010] Specific, the top of the air inlet end of the gas cover is connected with the exhaust port through the air inlet pipe, the air outlet end of the gas cover is connected with the shaping mechanism through the exhaust pipe, the exhaust pipe is made of stainless steel material, and the outer periphery of the exhaust pipe is connected with the heat dissipation fins at equal distances, the negative pressure is generated at the air inlet end of the gas cover by the exhaust fan, so that the box body generates negative pressure, the air inside the storage hopper is discharged outside through the air pipe, the air inside the storage hopper is reduced, the free moisture on the surface of the raw materials in the storage hopper and the adsorbed air are reduced, and the bubble, cavity and silver line conditions in the extruded high modulus product are reduced.

[0011] Specific, the transmission chain is arranged between the transmission shaft and the cross support seat, the transmission chain is engaged with the sprocket at both ends, one group of sprockets is installed on the transmission shaft through the key pin, and the other group of sprockets is arranged in the cross support seat and installed on the shaft, the low speed rotating force of the transmission shaft is transmitted to the shaft through the cooperation of the transmission chain and the sprocket, so that the mixing component on the shaft can assist mixing and stirring of the raw materials in the storage hopper, the mixing between the raw materials is promoted, and the bridging phenomenon is reduced.

[0012] Specific, the shaping mechanism includes a support sleeve, an inclined exhaust port is sequentially formed on the inner diameter surface of the support sleeve, and the inner wall of the support sleeve is a hollow structure, an air inlet joint is connected to one side of the support sleeve, and the air inlet joint is connected with the air outlet end of the exhaust pipe, the rotating force generated by the transmission shaft is combined with the conversion of the transmission structure, and the stirring power of the mixture and the cooling air of the extruded product are formed in sequence, so that the product discharged from the extruder body can be quickly cooled and shaped after passing through the support sleeve, the high modulus product with high strength is not deformed due to the remaining temperature after being extruded again, which is not conducive to the quality of the product, and the quality problem in the later use is caused, the air pump is connected to the bottom of the exhaust pipe through the three-way joint, and the gas flow controller is installed on the air outlet end of the exhaust pipe, when the air supply amount of the exhaust pipe inside the gas cover is lower than the personnel setting value, the gas flow controller detects and controls the air pump to work, so as to supplement the air in the exhaust pipe, so as to ensure that the exhaust pipe can deliver enough air flow to the shaping mechanism. The bottom of the supporting sleeve is provided with a supporting frame, the bottom of the supporting frame is provided with a first sliding rail and a second sliding rail at two ends respectively, the first sliding rail and the second sliding rail are both slidably connected with sliding blocks, the bottom of the supporting frame is fixedly installed with the first sliding rail and the second sliding rail respectively, a screw rod is rotatably connected with the second sliding rail through a bearing, the sliding block on the second sliding rail is threadedly connected with the screw rod, and the shaft head at one end of the screw rod penetrates out of the second sliding rail and is installed with a hexagonal head.

[0013] Specifically, a shut-off valve group is fixedly installed between the discharge end of the bottom of the storage hopper and the feed inlet of the extruder body through bolts, the shut-off valve group comprises a valve seat, a valve plate is inserted in the valve seat, an electric push rod is installed at one end of the valve seat, the output end of the electric push rod is fixedly installed with one end of the valve plate through bolts, sealing strips are padded at the butt joints of the valve seat, and a rubber layer is coated on the surface of the valve plate.

[0014] Specifically, a cover plate is installed at the top of the storage hopper through a hinge, the cover plate is fixed with the storage hopper cover through a metal snap fastener, a sealing ring is arranged on the cover surface of the cover plate, and an observation window is arranged on the side surface of the storage hopper.

[0015] The beneficial effects of the present application are as follows: 1. The double-screw extruder for high modulus agent production utilizes the rotation of the screw extrusion rod as the core power source, vertically transmits power to the transmission shaft through the meshing of the first bevel gear and the second bevel gear, and the transmission shaft becomes the "power distribution center" of the entire material processing mechanism, drives the air suction fan upward through the second transmission, and drives the mixing assembly horizontally through the transmission chain, thereby synchronously completing extrusion, mixing, air suction and cooling, greatly simplifying the equipment structure, reducing the manufacturing cost and energy consumption, and increasing the pretreatment effect of the material before entering the extruder by utilizing the linkage design.

[0016] 2. The double helical extruder for high modulus agent production, according to the application, the gas extracted by processing the material is guided to the gas cover, and after being pressurized by the exhaust fan driven by the same power system, the gas is transported to the shaping mechanism through the exhaust pipe, the gas is accurately guided to the surface of the high-temperature product just extruded, rapid and uniform cooling and shaping are realized, the deformation problem of the high modulus product caused by residual heat is solved, the product size stability and the qualified rate are improved, the maximum utilization of energy in the system is realized, and the environmental protection is good. BRIEF DESCRIPTION OF DRAWINGS

[0017] The application will be further described below in combination with the drawings and examples.

[0018] Figure 1 It is a whole view of the application; Figure 2 It is a schematic view of the helical extrusion rod of the application; Figure 3 It is a schematic view of the material processing mechanism structure of the application; Figure 4 It is a schematic view of the mixing assembly structure of the application; Figure 5 It is a schematic view of the side view of the box body of the application; Figure 6 It is a schematic view of the cut-off valve group of the application; Figure 7 It is a schematic view of the shaping mechanism structure of the application; Figure 8 It is a schematic view of the Figure 1 It is an enlarged schematic view of A in the application; Figure 9 It is a schematic view of the Figure 2 It is an enlarged schematic view of B in the application; Figure 10 It is a schematic view of the Figure 7 It is an enlarged schematic view of C in the application; In the diagram: 1. Extruder body; 101. Spiral extrusion rod; 11. Gear; 12. First bevel gear; 13. Second bevel gear; 2. Storage hopper; 21. Cover plate; 22. Metal buckle; 3. Shut-off valve assembly; 31. Valve seat; 32. Valve plate; 33. Electric push rod; 4. Material handling mechanism; 41. Cross support seat; 42. Mixing assembly; 421. Shaft; 422. Feeding plate; 423. Mixing rod; 43. Vacuum assembly; 431. Box body; 432. Filter screen; 433. Exhaust. 44. Interface; 45. Drive shaft; 46. Drive chain; 47. Sprocket; 48. Second gearbox; 49. Air hood; 40. Exhaust fan; 410. Air inlet pipe; 5. First gearbox; 6. Drive motor; 7. Shaping mechanism; 71. Support sleeve; 72. Inclined exhaust port; 73. Air inlet connector; 74. Support frame; 75. First slide rail; 76. Second slide rail; 761. Screw; 763. Hexagonal head; 77. Slider; 8. Exhaust pipe; 81. Heat dissipation fins; 9. Base; 10. Air pump. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0020] As one embodiment of the present invention, such as Figures 1 to 10 As shown, the present invention discloses a twin-screw extruder for producing high modulus agents, comprising an extruder body 1, a storage hopper 2, and a material handling mechanism 4. A base 9 is fixedly installed at the bottom of the extruder body 1. The storage hopper 2 is located at the feed end of the extruder body 1. A shaping mechanism 7 is provided at the discharge end of the extruder body 1 and is mounted on the base 9. A first gearbox 5 is installed at the top of the base 9 away from the shaping mechanism 7. A drive motor 6 is fixed on one side of the housing of the first gearbox 5. The output end of the drive motor 6 is connected to the input end of the first gearbox 5. The material handling mechanism 4 is mounted on the storage hopper 2 and connected to the first gearbox 5.

[0021] The material handling mechanism 4 includes a cross support 41, a mixing component 42, and an air extraction component 43 disposed inside the storage hopper 2, and a transmission shaft 44, a second gearbox 47, and an air hood 48 disposed outside the storage hopper 2. The mixing component 42 includes a shaft 421 that passes through the middle of the cross support 41, and a discharge plate 422 is installed on the top of the shaft 421. A mixing rod 423 is installed on the bottom of the shaft 421. The air extraction component 43 is located on the top of one side inside the storage hopper 2 and includes a box body 431. An air inlet is opened on the top of the box body 431, and a trapezoidal filter screen 432 is provided at the bottom of the box body 431. An exhaust port 433 is connected to one side of the box body 431 and extends to the outside of the storage hopper 2.

[0022] The transmission shaft rod 44 is vertically installed above the base 9 through a bearing seat, the bottom of the transmission shaft rod 44 is fixedly installed with the second bevel gear 13, the second transmission 47 is fixedly installed on the storage hopper 2, the input shaft of the second transmission 47 is connected with the top of the transmission shaft rod 44, the air cover 48 is installed on the outer periphery of the output end of the second transmission 47, the air cover 48 is internally installed with the exhaust fan 49, the output end of the second transmission 47 is connected with the input shaft of the exhaust fan 49, the air inlet end of the air cover 48 is connected with the exhaust port 433 through the air inlet pipe 410, and the air outlet end of the air cover 48 is connected with the shaping mechanism 7 through the exhaust pipe 8.

[0023] The shaping mechanism 7 comprises a support sleeve 71, an inclined exhaust port 72 is sequentially formed in the inner diameter surface of the support sleeve 71, and the inner wall of the support sleeve 71 is a hollow structure, one side of the support sleeve 71 is connected with an air inlet joint 73, the air inlet joint 73 is connected with the air outlet end of the exhaust pipe 8, the bottom of the support sleeve 71 is provided with a support frame 74, the bottom of the support frame 74 is respectively provided with a first sliding rail 75 and a second sliding rail 76, the first sliding rail 75 and the second sliding rail 76 are both slidably connected with a sliding block 77, the bottom of the support frame 74 is fixedly installed with the first sliding rail 75 and the second sliding rail 76, a screw rod 761 is rotatably connected with the second sliding rail 76 through a bearing, the sliding block 77 on the second sliding rail 76 is threadedly connected with the screw rod 761, the shaft head at one end of the screw rod 761 penetrates out of the second sliding rail 76 and is installed with a hexagonal head 763, by rotating the hexagonal head 763, the position of the support sleeve 71 can be adjusted, so as to facilitate replacement of the extrusion die.

[0024] The exhaust pipe 8 is made of stainless steel material, and the outer periphery of the exhaust pipe 8 is connected with heat dissipation fins 81 at equal distances, so as to enhance the heat dissipation effect, the bottom of the exhaust pipe 8 is connected with the air pump 10 through a tee joint, and the exhaust end of the exhaust pipe 8 is installed with a gas flow controller, when the air supply amount of the exhaust pipe 8 inside the air cover 48 is lower than the set value, the gas flow controller controls the air pump 10 to work, so as to supplement air in the exhaust pipe 8, and ensure that sufficient air flow is delivered to the shaping mechanism 7.

[0025] The bottom discharge end of the storage hopper 2 and the feed inlet of the extruder body 1 are fixedly installed with the cut-off valve group 3, the cut-off valve group 3 comprises a valve seat 31, a valve plate 32 is inserted in the valve seat 31, one end of the valve seat 31 is installed with an electric push rod 33, the output end of the electric push rod 33 is fixedly connected with one end of the valve plate 32, the opening and closing of the valve plate 32 is controlled through the electric push rod 33, so as to realize the cutting and circulation of the material, when it is needed to supplement the material in the storage hopper 2, the storage hopper 2 and the extruder body 1 can be temporarily closed through the cut-off valve group 3, so as to reduce the infiltration of the external air into the inside of the extruder body 1.

[0026] The top of the storage hopper 2 is provided with a cover plate 21 which is hingedly installed on the top of the storage hopper 2, and the cover plate 21 is fixed on the top of the storage hopper 2 by a metal buckle 22, and the cover plate 21 is provided with a sealing ring on the cover surface, and the side of the storage hopper 2 is provided with an observation window, so as to facilitate the observation of the material condition and the addition of raw materials, and during the extrusion work, the top of the storage hopper 2 is covered by the cover plate 21, and the two are buckled and locked by the metal buckle 22.

[0027] In use, the driving motor 6 drives the helical extrusion rod 101 to rotate through the first transmission 5, the first bevel gear 12 on the input shaft of the helical extrusion rod 101 drives the second bevel gear 13 to rotate, and in turn drives the transmission shaft rod 44 to rotate, the transmission shaft rod 44 drives the shaft rod 421 to rotate through the transmission chain 45 and the sprocket 46, so that the material beating plate 422 and the mixing rod 423 stir and mix the raw materials in the storage hopper 2, and reduce the bridging phenomenon, at the same time, the transmission shaft rod 44 drives the exhaust fan 49 to work through the second transmission 47, the exhaust fan 49 extracts the air in the storage hopper 2 through the air inlet pipe 410 and the exhaust interface 433, reduces the free moisture on the surface of the raw materials and the adsorbed air, and reduces the bubble, cavity and silver line situation in the extruded high modulus product. The airflow discharged by the exhaust fan 49 is transported to the shaping mechanism 7 through the exhaust pipe 8 to cool and shape the extruded product.

[0028] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A twin-screw extruder for producing high-modulus agents, characterized in that, The extruder body (1), storage hopper (2) and material handling mechanism (4) are included. The bottom of the extruder body (1) is fixedly installed with a base (9). The storage hopper (2) is set on the feed end of the extruder body (1). The discharge end of the extruder body (1) is provided with a shaping mechanism (7), and the shaping mechanism (7) is installed on the base (9). The top of the base (9) away from the shaping mechanism (7) is equipped with a first gearbox (5). The housing side of the first gearbox (5) is fixed with a drive motor (6) by bolts, and the output end of the drive motor (6) is connected to the input end of the first gearbox (5). The material handling mechanism (4) is installed on the storage hopper (2) and connected to the first gearbox (5).

2. The twin-screw extruder for producing high-modulus agents according to claim 1, characterized in that, The material handling mechanism (4) includes two parts, one part is set inside the storage hopper (2) and the other part is set outside the storage hopper (2). The part of the material handling mechanism (4) located inside the storage hopper (2) includes a cross support (41), a mixing component (42) and an air extraction component (43). The cross support (41) is welded and fixed to the storage hopper (2) around its perimeter. The mixing component (42) is set on the cross support (41). The top of the cross support (41) has a sloping chamfered structure. The mixing assembly (42) includes a shaft (421) that passes through the middle of the cross support (41), and a feeding plate (422) is installed on the top of the shaft (421) and a mixing rod (423) is installed on the bottom of the shaft (421).

3. The twin-screw extruder for producing high-modulus agents according to claim 2, characterized in that, The air extraction assembly (43) is located on the top of one side inside the storage hopper (2), including a box body (431). The top of the box body (431) is inclined downward along the inner wall of the storage hopper (2). The top of the box body (431) is provided with an opening structure for air intake. A trapezoidal filter screen (432) is provided at the bottom of the box body (431). The outer periphery of the bottom of the trapezoidal filter screen (432) is fixed to the box body (431) by bolts. An exhaust port (433) is integrally connected to the side of the box body (431) near the inner wall of the storage hopper (2). The exhaust port (433) extends to the outside of the storage hopper (2). The box body (431) and the storage hopper (2) are fixed by bolts.

4. A twin-screw extruder for producing high-modulus agents according to claim 3, characterized in that, The spiral extrusion structure inside the extruder body (1) consists of two sets of spiral extrusion rods (101). The input shaft of the spiral extrusion rod (101) passes through the housing of the extruder body (1) and is fitted with meshing gears (11) via key pins. The output end of the first gearbox (5) is connected to the input shaft of one set of spiral extrusion rods (101) via a coupling. A first bevel tooth (12) is fixedly sleeved on the input shaft of one set of spiral extrusion rods (101) via key pins. A second bevel tooth (13) perpendicular to the base (9) meshes with the top of one side of the first bevel tooth (12).

5. A twin-screw extruder for producing high-modulus agents according to claim 4, characterized in that, The material handling mechanism (4) located outside the storage hopper (2) includes a drive shaft (44), a second gearbox (47), and an air hood (48). The drive shaft (44) is vertically mounted on the base (9) via a bearing seat. The bottom of the drive shaft (44) is fixedly mounted to the second bevel gear (13) via a key pin. The second gearbox (47) is fixedly mounted to the storage hopper (2) via bolts. The input shaft of the second gearbox (47) is connected to the top of the drive shaft (44) via a coupling. The air hood (48) is bolted to the outer periphery of the output end of the housing of the second gearbox (47). An exhaust fan (49) is installed inside the air hood (48). The output end of the second gearbox (47) is connected to the input shaft of the exhaust fan (49).

6. A twin-screw extruder for producing high-modulus agents according to claim 5, characterized in that, The top of the air inlet end of the air hood (48) is connected to the exhaust port (433) through the air inlet pipe (410), and the air outlet end of the air hood (48) is connected to the shaping mechanism (7) through the exhaust pipe (8). The exhaust pipe (8) is made of stainless steel and has heat dissipation fins (81) connected at equal intervals on the outer periphery of the exhaust pipe (8).

7. A twin-screw extruder for producing high-modulus agents according to claim 6, characterized in that, A transmission chain (45) is provided between the transmission shaft (44) and the cross support (41). Sprockets (46) are respectively engaged at both ends of the transmission chain (45). One set of sprockets (46) is installed on the transmission shaft (44) by key pins, and the other set of sprockets (46) is located in the cross support (41) and installed on the shaft (421).

8. A twin-screw extruder for producing high-modulus agents according to claim 7, characterized in that, The shaping mechanism (7) includes a support sleeve (71), and inclined exhaust ports (72) are sequentially opened on the inner diameter surface of the support sleeve (71). The inner wall of the support sleeve (71) is hollow. An air inlet connector (73) is connected to one side of the support sleeve (71). The air inlet connector (73) is connected to the air outlet of the exhaust pipe (8). An air pump (10) is connected to the bottom of the exhaust pipe (8) through a tee. The support sleeve (71) is provided with a support frame (74) at the bottom. The support frame (74) is provided with a first slide rail (75) and a second slide rail (76) at both ends of the bottom. A slider (77) is slidably connected to both the first slide rail (75) and the second slide rail (76). The bottom of the support frame (74) is fixedly installed to the first slide rail (75) and the second slide rail (76). A screw (761) is rotatably connected to the second slide rail (76) through a bearing. The slider (77) on the second slide rail (76) is threadedly connected to the screw (761). The shaft head at one end of the screw (761) passes through the second slide rail (76) and is equipped with a hexagonal head (763).

9. A twin-screw extruder for producing high-modulus agents according to claim 8, characterized in that, A shut-off valve assembly (3) is fixedly installed between the bottom discharge end of the storage hopper (2) and the feed inlet of the extruder body (1) by bolts. The shut-off valve assembly (3) includes a valve seat (31), a valve plate (32) is inserted in the valve seat (31), an electric push rod (33) is installed at one end of the valve seat (31), the output end of the electric push rod (33) is fixedly installed with one end of the valve plate (32) by bolts, a sealing strip is provided at the joint of the valve seat (31), and the surface of the valve plate (32) is covered with a rubber layer.

10. A twin-screw extruder for producing high-modulus agents according to claim 9, characterized in that, The top of the storage hopper (2) is fitted with a cover plate (21) via a hinge. The cover plate (21) is fixed to the storage hopper (2) via a metal buckle (22), and a sealing ring is provided on the covering surface of the cover plate (21). An observation window is provided on the side of the storage hopper (2).

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