Screw extruder

Abstract

The invention relates to the technical field of screw extruders, in particular to a screw extruder which comprises a bearing mechanism, a conveying mechanism mounted on the bearing mechanism, a transmission mechanism mounted on the conveying mechanism and an extrusion mechanism mounted on the transmission mechanism. An anti-seepage flow choking gasket is installed in an inner cavity of a material passing barrel, a discharging bin for transferring muddy water is installed at the bottom of the material passing barrel, meanwhile, a feeding end pipe is installed at the top of the material passing barrel, and after mud passes through the feeding end pipe, a pull rod and a guide rod which are combined can drive a cushion column to continuously extrude the mud in the feeding end pipe; at the moment, part of muddy water seeping from the mud under pressure can be emptied from the discharging bin into the flow guide groove, and the mud continuously extruded into the material passing barrel can be extruded into the material spraying end piece in a rotating mode of the reamer, so that the end face of the mud cylinder can be effectively ensured to be consistent with the advancing speed of the mud, and the extruded mud is prevented from being in a spiral strip shape.

Description

Technical Field

[0001] The invention relates to the technical field of screw extruders, in particular to a screw extruder. Background Art

[0002] Screw extruders are divided into cold feed screw extruders and hot feed screw extruders. Both are used to extrude rubber semi-finished products and finished products. Cold feed screw extruders can be fed with unheated rubber materials, and the rubber materials are plasticized by heat through screw extrusion, shearing and stirring, and are continuously extruded from the die. Hot feed screw extruders must be fed with heat-refined rubber materials, and the rubber materials are further plasticized by screw extrusion, shearing and stirring, and are continuously extruded from the die.

[0003] Due to the different properties of the extruded materials, the screw extruder will have many disadvantages that affect its use. For the spiral extrusion of materials in the mud, the existing extruders can easily cause spiral patterns to appear in the mud strips after extrusion. Because the mud strips of this type of equipment are affected by the spiral action of the auger, the mud material advances at inconsistent speeds on the mud cylinder section. The mud material near the axis moves faster, while the mud material at the edge moves slower. An interface is formed between the mud flows of different speeds, and water and air are concentrated in the gaps on this surface, resulting in stratification.

[0004] Regarding the use of a screw extruder, how to improve the cross-section of the mud cylinder and the speed at which the mud advances to maintain consistency, while improving the extrusion and discharge of excess water in the mud to reduce the problem of gaps in the mud near the screw, is the technical difficulty that the present invention needs to solve. Summary of the invention

[0005] The present invention aims to solve one of the technical problems existing in the prior art or related technology.

[0006] To this end, the technical solution adopted in the present invention is: A screw extruder comprises a load-bearing mechanism, a feeding mechanism installed on the load-bearing mechanism, a transmission mechanism installed on the feeding mechanism and an extrusion mechanism installed on the transmission mechanism, wherein the load-bearing mechanism comprises two supporting plates, a gasket installed on the supporting plates by means of nuts, a guide groove movably installed between the two supporting plates, three brackets movably installed in the two supporting plates, two first supporting rings installed on the top of two of the brackets and a second supporting ring installed on the other bracket, and the feeding mechanism comprises a feeding barrel, a flow-blocking gasket installed in the inner cavity of the feeding barrel, a discharge bin installed at the bottom of the feeding barrel, four positioning clips fixedly installed on the side wall of the outer end of the feeding barrel, a protective inner tube movably installed inside the feeding barrel, and a protective inner tube movably installed inside the feeding barrel by means of bolts. The spraying end piece is fixed on the outer end of the protective inner tube and the vortex rod is movably installed in the middle of the inner cavity of the material delivery barrel. The transmission mechanism includes a protective outer cover fixed on the other end of the material delivery barrel by bolts, a clamp fixed on the outer wall of the protective outer cover by bolts, a motor fixed inside the clamp, a column fixed on the top of the protective outer cover, an eccentric turntable movably installed on the top of the column, a main crawler belt that is transmitted to the motor and the vortex rod, and an auxiliary crawler belt that is transmitted to the motor and the eccentric turntable. The extrusion mechanism includes a limiting outer frame fixedly installed on the feed end tube at the top of the material delivery barrel, a pull rod movably installed on the end rod of the outer wall of the eccentric turntable, a guide rod movably installed at the bottom of the pull rod and clamped in the limiting outer frame, and a pad column fixed in the guide rod by bolts.

[0007] In a preferred example, the present invention can be further configured as follows: a slide groove is provided inside the support plate, and two screw rods penetrating into the slide groove are respectively installed at the bottom of both ends of the cushion, and nuts are connected to the screw rods.

[0008] By adopting the above technical solution, the two screws at the bottom of both ends of the cushion are respectively inserted into the slide grooves inside the two support plates, and the two screws are positioned and tightened with the help of two nuts. At this time, the cushion after horizontal movement along the top of the two support plates can support the top of the guide groove movably installed on a bracket, so as to ensure the safe discharge of muddy water discharged from the discharge bin.

[0009] In a preferred example, the present invention can be further configured as follows: the first support ring and the second support ring are both in annular structures, and the bottoms of the first support ring and the second support ring are connected by bolts, and the inner wall of the second support ring is provided with two rectangular transverse grooves.

[0010] By adopting the above technical solution, two first support rings and one second support ring are fixedly installed on the bottom of the material delivery barrel by bolts. At this time, the two first support rings and one second support ring fixedly supported by three brackets can ensure that the material delivery barrel and the protective inner tube maintain a stable state during the extrusion of mud.

[0011] In a preferred example, the present invention can be further configured as follows: a cylindrical cavity is opened inside the material transfer barrel, and the protective inner tube is adapted to penetrate into the cylindrical cavity inside the material transfer barrel, and an annular gasket is opened at one end of the protective inner tube away from the flow-blocking gasket.

[0012] By adopting the above technical solution, the flow-blocking gasket is fixedly installed in the cavity of the end of the material delivery barrel away from the protective inner tube. When the mud material is squeezed into the inner cavity along the feed end tube at the top of the material delivery barrel, part of the squeezed mud and water will flow along the gap between the vortex rod and the material delivery barrel toward the flow-blocking gasket and the port of the discharge bin, and finally flow from the discharge bin into the guide groove.

[0013] In a preferred example, the present invention can be further configured as follows: a metal filter is installed inside the discharge bin, and a drainage hole is opened at the bottom of the discharge bin.

[0014] By adopting the above technical solution, the metal filter in the inner cavity of the discharge bin is used to screen out the dirt hidden in the muddy water, thereby effectively avoiding the problem of incomplete muddy water discharge causing some dirt to adhere to the inner wall of the discharge bin, thereby causing rust and corrosion of the inner wall of the discharge bin.

[0015] In a preferred example, the present invention can be further configured as follows: a semi-cylindrical recessed hole for clamping the motor is provided on the top of the clamp, and two clamping strips are installed on the top surface of the clamp.

[0016] By adopting the above technical solution, the motor is fixed by the clamp and the two clamping strips on its top. When the motor is started and operated, the shaft rod that penetrates the inner cavity of the protective cover and the transmission end can stably drive the main track and the auxiliary track.

[0017] In a preferred example, the present invention can be further configured as follows: the position-limiting outer frame is composed of an L-shaped load-bearing arm and an annular buckle, and a vertical groove is provided inside the L-shaped load-bearing arm.

[0018] By adopting the above technical solution, the limiting external frame is fixedly installed on the annular groove of the feed end tube at the top of the delivery barrel. At this time, the vertically distributed L-shaped load-bearing arm can limit and clamp the guide rod at the bottom of the guide rod. With the continuous rotation of the eccentric turntable, the clamped clamp can drive the cushion column to continuously apply pressure to the mud material inside the feed end tube.

[0019] In a preferred example, the present invention can be further configured as follows: the guide rod is in a Z-shaped structure as a whole, and a vertical hole adapted to be constrained by the vertical rod at the top of the cushion column is opened in the straight tube at the top of the guide rod.

[0020] By adopting the above technical solution, a straight tube is installed at the top of the guide rod, and a screw hole suitable for a bolt is opened at the outer end of the straight tube. When the vertical rod at the top of the pad column passes through the interior of the straight tube, the operator can use the bolt to fix and clamp the vertical rod passing through the interior of the straight tube.

[0021] By adopting the above technical solution, the beneficial effects achieved by the present invention are: 1. The present invention installs an anti-seepage flow-blocking gasket in the inner cavity of the material delivery barrel, installs a discharge bin for transferring mud and water at the bottom of the material delivery barrel, and installs a feed end pipe at the top of the material delivery barrel. When the mud passes through the feed end pipe, the combined pull rod and guide rod will drive the cushion column to continuously squeeze the mud inside the feed end pipe. At this time, part of the mud and water that seeps out of the mud under pressure will be discharged from the discharge bin into the guide groove, and the mud that is continuously squeezed into the material delivery barrel will be squeezed into the spray end piece along the rotation of the auger, thereby effectively ensuring that the end face of the mud cylinder maintains a consistent forward speed with the mud, and avoiding the extruded mud from appearing in spiral strips.

[0022] 2. The present invention installs a detachable and cleanable protective inner tube movably inside the material delivery barrel, and installs the spray end piece on the outer end of the protective inner tube with a plurality of bolts, and uses four positioning clips fixed on the side wall of the outer end of the material delivery barrel to clamp the spray end piece in position, and cooperates with the auger on the vortex rod movably installed in the inner cavity of the material delivery barrel to fit the inner wall of the protective inner tube. When the pressurized material is squeezed into the cavity of the material delivery barrel close to one end of the protective outer cover, as the vortex rod continues to rotate, the pressurized material will be compacted along the axis of the auger, thereby effectively avoiding the formation of gaps and stratification due to insufficient pressure on the mud material after entering the protective inner tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the present invention when used; Figure 2 It is a bottom view schematic diagram of the present invention; Figure 3 is a schematic diagram of the load-bearing mechanism of the present invention; Figure 4 It is a dispersed schematic diagram of the load-bearing mechanism of the present invention; Figure 5 It is a schematic diagram of the feeding mechanism and the transmission mechanism of the present invention; Figure 6 It is an internal schematic diagram of the feeding mechanism of the present invention; Figure 7 For the present invention Figure 6 Schematic diagram of dispersion; Figure 8 It is a schematic diagram of the transmission mechanism of the present invention; Fig. 9 It is a dispersed schematic diagram of the transmission mechanism of the present invention; Fig.10 For the present invention Fig. 9 Schematic diagram of the internal dispersion.

[0024] Reference numerals: 100, load-bearing mechanism; 110, support plate; 120, cushion; 130, guide groove; 140, bracket; 150, first support ring; 160, second support ring; 200, feeding mechanism; 210, material delivery cylinder; 220, material discharge bin; 230, flow blocking gasket; 240, positioning clip; 250, material spraying end piece; 260, protective inner tube; 270, worm rod; 300, transmission mechanism; 310, protective cover; 320, fixture; 330, motor; 340, column; 350, eccentric turntable; 360, main crawler; 370, auxiliary crawler; 400, extrusion mechanism; 410, position limiting outer frame; 420, guide rod; 430, pull rod; 440, cushion column. DETAILED DESCRIPTION

[0025] To make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in combination with specific implementations and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0026] It is to be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention.

[0027] A screw extruder provided by some embodiments of the present invention is described below in conjunction with the accompanying drawings. Embodiment 1:

[0028] Combination Figure 1-Figure 10 As shown, a screw extruder provided by the present invention includes a load-bearing mechanism 100 , a feeding mechanism 200 installed on the load-bearing mechanism 100 , a transmission mechanism 300 installed on the feeding mechanism 200 , and an extrusion mechanism 400 installed on the transmission mechanism 300 .

[0029] The load-bearing mechanism 100 includes a support plate 110, a cushion 120, a guide groove 130, a bracket 140, a first support ring 150 and a second support ring 160. The feeding mechanism 200 includes a material delivery barrel 210, a discharge bin 220, a flow-blocking gasket 230, a positioning clamp 240, a spray end piece 250, a protective inner tube 260 and a worm rod 270. The transmission mechanism 300 includes a protective outer cover 310, a clamp 320, a motor 330, a column 340, an eccentric turntable 350, a main track 360 and an auxiliary track 370. The extrusion mechanism 400 includes a limiting outer frame 410, a guide rod 420, a pull rod 430 and a cushion column 440.

[0030] Specifically, the gasket 120 is installed on the support plate 110 by using nuts, the guide groove 130 is movably installed between the two support plates 110, the three brackets 140 are movably installed in the two support plates 110, the two first support rings 150 are installed on the top of two of the brackets 140, the second support ring 160 is installed on the other bracket 140, the flow blocking gasket 230 is installed in the inner cavity of the material delivery barrel 210, the discharge bin 220 is installed at the bottom of the material delivery barrel 210, the four positioning clips 240 are fixedly installed on the side wall of the outer end of the material delivery barrel 210, the protective inner tube 260 is movably installed in the interior of the material delivery barrel 210, the spray end piece 250 is fixed on the outer end of the protective inner tube 260 by bolts, the vortex rod 270 is movably installed in the middle of the inner cavity of the material delivery barrel 210, and the protective outer The cover 310 is fixed to the other end of the material delivery barrel 210 by bolts, the clamp 320 is fixed to the outer wall of the protective outer cover 310 by bolts, the motor 330 is fixed inside the clamp 320, the column 340 is fixedly installed on the top of the protective outer cover 310, the eccentric turntable 350 is movably installed on the top of the column 340, the main crawler 360 is driven by the motor 330 and the worm 270, the auxiliary crawler 370 is driven by the motor 330 and the eccentric turntable 350, the limiting outer frame 410 is fixedly installed on the feed end pipe at the top of the material delivery barrel 210, the pull rod 430 is movably installed on the end rod of the outer wall of the eccentric turntable 350, the guide rod 420 clamped in the limiting outer frame 410 is movably installed at the bottom of the pull rod 430, and the pad column 440 is fixed in the guide rod 420 by bolts.

[0031] By installing a feed end pipe on the top of the delivery barrel 210, when the mud passes through the feed end pipe, the combined pull rod 430 and the guide rod 420 will drive the cushion column 440 to continuously squeeze the mud inside the feed end pipe. At this time, part of the mud water that seeps out of the mud under pressure will be discharged from the discharge bin 220 into the guide groove 130, and the mud that is continuously squeezed into the delivery barrel 210 will be squeezed out into the spray end piece 250 along the rotation of the reamer, thereby effectively ensuring that the end face of the mud cylinder and the forward speed of the mud are maintained consistent, avoiding the appearance of spiral strips in the extruded mud , and use four positioning clips 240 fixed on the side wall of the outer end of the material delivery barrel 210 to clamp the spray end piece 250 in position, and cooperate with the auger on the vortex rod 270 movably installed in the inner cavity of the material delivery barrel 210 to fit the inner wall of the protective inner tube 260. When the material is pressed and squeezed into the cavity of the material delivery barrel 210 close to the protective outer cover 310, as the vortex rod 270 continues to rotate, the pressurized material will be compacted along the axis of the auger, thereby effectively avoiding the formation of gaps and stratification due to insufficient pressure on the mud entering the protective inner tube 260. Embodiment 2:

[0032] Combination Figure 3 and Figure 4As shown, on the basis of embodiment one, a slide groove is opened inside the support plate 110, and two screws penetrating into the slide groove are respectively installed at the bottom of both ends of the cushion 120, and nuts are connected to the screws, the first support ring 150 and the second support ring 160 are both in a circular ring structure, and the bottoms of the first support ring 150 and the second support ring 160 are connected with bolts, and the inner wall of the second support ring 160 is provided with two rectangular transverse grooves.

[0033] By passing the two screws at the bottom of the two ends of the cushion 120 through the slide grooves inside the two support plates 110 respectively, and using two nuts to position and tighten the two screws, the cushion 120 that moves horizontally along the top of the two support plates 110 can support the top of the guide groove 130 that is movably installed on a bracket 140 to ensure that the muddy water discharged from the discharge bin 220 is safely discharged. The two first support rings 150 and the second support ring 160 are fixedly installed on the bottom of the material delivery barrel 210 with bolts. At this time, the two first support rings 150 and the second support ring 160 that are fixedly supported by the three brackets 140 can ensure that the material delivery barrel 210 and the protective inner tube 260 maintain a stable state during the extrusion of mud. Embodiment three:

[0034] Combination Figure 3-Figure 6 As shown, on the basis of Example 1, a cylindrical cavity is opened inside the material delivery barrel 210, and the protective inner tube 260 is adapted to penetrate into the cylindrical cavity inside the material delivery barrel 210, and an annular gasket is opened at the end of the protective inner tube 260 away from the flow-blocking gasket 230, a metal filter is installed inside the discharge bin 220, and a drainage hole is opened at the bottom end of the discharge bin 220.

[0035] By fixing the baffle gasket 230 in the cavity of the delivery barrel 210 away from the protective inner tube 260, when the mud is squeezed into the inner cavity along the feed end tube at the top of the delivery barrel 210, part of the squeezed mud and water will converge along the gap between the vortex rod 270 and the delivery barrel 210 toward the baffle gasket 230 and the port of the discharge bin 220, and finally flow from the discharge bin 220 into the guide groove 130, and at the same time cooperate with the metal filter mesh in the inner cavity of the discharge bin 220 to filter the mud and water hidden in the mud and dirt, thereby effectively avoiding the problem of incomplete mud and water dirt removal, which causes part of the mud and dirt to adhere to the inner wall of the discharge bin 220, and then causes rust on the inner wall of the discharge bin 220. Embodiment 4:

[0036] Combination Figure 7-Figure 10As shown, on the basis of embodiment one, a semi-cylindrical recessed hole for clamping the motor 330 is opened on the top of the clamp 320, and two clamping strips are installed on the top surface of the clamp 320, the limiting outer frame 410 is composed of an L-shaped load-bearing arm and an annular buckle, and a vertical groove is opened inside the L-shaped load-bearing arm, the guide rod 420 is a Z-shaped structure as a whole, and a vertical hole adapted to be constrained by the vertical rod at the top of the cushion column 440 is opened in the straight cylinder at the top of the guide rod 420.

[0037] The motor 330 is fixed by using the clamp 320 and the two clamping strips on its top. When the motor 330 is started and operated, the shaft rod and the transmission end head that penetrate into the inner cavity of the protective outer cover 310 can stably drive the main track 360 and the auxiliary track 370, and the limiting outer frame 410 is fixedly installed on the annular groove of the feed end tube at the top of the delivery barrel 210. At this time, the vertically distributed L-shaped load-bearing arm can limit and clamp the guide rod at the bottom of the guide rod 420. With the continuous rotation of the eccentric turntable 350, the clamped clamp 320 can drive the cushion column 440 to continuously apply pressure to the mud material inside the feed end tube, and a screw hole suitable for bolts is opened at the outer end of the straight tube at the top of the guide rod 420. When the vertical rod at the top of the cushion column 440 penetrates into the interior of the straight tube, the operator can use the bolt to fix and clamp the vertical rod that penetrates into the interior of the straight tube.

[0038] The working principle and use process of the present invention are as follows: the column 340 is fixedly installed on the top of the protective cover 310 in advance, and then the clamp 320 is fixedly installed on the outer wall of the protective cover 310 by bolts, and then the motor 330 is installed in the clamp 320, and the transmission end of the outer shaft of the clamp 320 will penetrate into the inner cavity of the protective cover 310, and then the eccentric turntable 350 is movably installed on the top of the column 340. At this time, the external transmission end of the motor 330 and the eccentric turntable 350 are connected by the auxiliary track 370, and the main track 360 will be transmitted to the motor 330 and the worm 270, and then the delivery barrel 210 is fixed to the side of the protective cover 310 away from the clamp 320 by bolts. At this time, the worm 270 will be movably installed in the delivery barrel 210. The inner cavity of the material delivery barrel 210 is fitted with the protective inner tube 260, and the vortex rod 270 will fit the inner wall of the protective inner tube 260. Then, the limiting outer frame 410 is fixedly installed on the feed end tube at the top of the material delivery barrel 210, and the top of the pull rod 430 is movably installed on the end column of the outer wall of the eccentric turntable 350. Then, the guide rod at the bottom of the guide rod 420 is movably installed on the bottom of the pull rod 430. The cushion column 440 movably installed in the guide rod 420 is fixed with a bolt, and the guide rod at the bottom of the guide rod 420 will be located in the vertical groove inside the limiting outer frame 410. Then, the four positioning clips 240 are used to fix the spray end piece 250 on the end of the material delivery barrel 210 away from the protective outer cover 310, and the two first support rings 150 are fixed. The first support ring 150 and the second support ring 160 are respectively installed on the top of the three brackets 140, and the two first support rings 150 and the second support ring 160 are fixedly installed on the bottom of the delivery barrel 210 by three bolts, and the cushions 120 movably installed in the two support plates 110 are positioned and assembled by two nuts. At this time, the guide groove 130 movably installed in a bracket 140 will be supported by the fixed cushions 120, and the notch on the top of the guide groove 130 will be connected with the port at the bottom of the discharge bin 220. When in use, when the motor 330 is started and running, the main crawler 360 and the column 340 driven by its external shaft and its transmission end will respectively drive the worm 270 and the eccentric turntable 350, and the outer wall of the eccentric turntable 350 is installed The installed end rod will drive the combined pull rod 430, the guide rod 420 and the fixed cushion column 440 to perform reciprocating lifting and lowering, and the guide rod 420 is limited and clamped by the limiting external frame 410 at the bottom. At this time, the end of the bottom of the cushion column 440 will continuously pressurize the mud strips put into the feed end tube at the top of the delivery barrel 210. When the material in the feed end tube is continuously pressurized and transferred to the inner cavity of the delivery barrel 210, the continuous rotation of the worm 270 will spirally extrude the mud strips. At this time, the spiral extrusion of the material can avoid the generation of gaps, and part of the moisture squeezed into the inner cavity of the delivery barrel 210 will be discharged into the guide groove 130 along the discharge bin 220. At this time, during the rotation of the worm 270, the mud cylinder cross-section and the rotation speed of the mud strips can be kept consistent.At the same time, the axial part of the worm 270 will not produce stratification and gaps due to uneven mud extrusion, thereby effectively avoiding the appearance of spiral lines after the mud strips are extruded along the material delivery tube 210 and the spraying end piece 250.

[0039] Although the 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 claims and their equivalents.

Claims

1. A screw extruder, characterized in that: It comprises a load-bearing mechanism (100), a material conveying mechanism (200) installed on the load-bearing mechanism (100), a transmission mechanism (300) installed on the material conveying mechanism (200), and an extrusion mechanism (400) installed on the transmission mechanism (300); The material feeding mechanism (200) comprises a material delivery barrel (210), a flow-blocking gasket (230) installed in the inner cavity of the material delivery barrel (210), a material discharge bin (220) installed at the bottom of the material delivery barrel (210), four positioning clips (240) fixedly installed on the outer end side wall of the material delivery barrel (210), a protective inner tube (260) movably installed inside the material delivery barrel (210), a material spraying end piece (250) fixed to the outer end of the protective inner tube (260) by bolts, and a worm rod (270) movably installed in the middle of the inner cavity of the material delivery barrel (210); The transmission mechanism (300) comprises a protective cover (310) fixed to the other end of the material delivery barrel (210) by means of bolts, a clamp (320) fixed to the outer wall of the protective cover (310) by means of bolts, a motor (330) fixed inside the clamp (320), a column (340) fixedly mounted on the top of the protective cover (310), an eccentric rotating disk (350) movably mounted on the top of the column (340), a main crawler (360) transmitting power to the motor (330) and the worm (270), and an auxiliary crawler (370) transmitting power to the motor (330) and the eccentric rotating disk (350); The extrusion mechanism (400) comprises a limiting outer frame (410) fixedly mounted on the top feed end tube of the delivery barrel (210), a pull rod (430) movably mounted on the outer wall end rod of the eccentric turntable (350), a guide rod (420) movably mounted on the bottom of the pull rod (430) and clamped in the limiting outer frame (410), and a cushion column (440) fixed in the guide rod (420) by bolts.

2. A screw extruder according to claim 1, characterized in that, The load-bearing mechanism (100) comprises two support plates (110), a gasket (120) mounted on the support plates (110) using nuts, a guide groove (130) movably mounted between the two support plates (110), three brackets (140) movably mounted in the two support plates (110), two first support rings (150) mounted on the tops of two of the brackets (140), and a second support ring (160) mounted on the other bracket (140).

3. A screw extruder according to claim 2, characterized in that, A sliding groove is provided inside the support plate (110), and two screw rods penetrating the sliding grooves are respectively installed at the bottom of both ends of the cushion member (120), and nuts are connected to the screw rods.

4. A screw extruder according to claim 2, characterized in that, The first supporting ring (150) and the second supporting ring (160) are both in a circular ring structure, and bolts are connected at the bottom of the first supporting ring (150) and the second supporting ring (160), while the inner wall of the second supporting ring (160) is provided with two rectangular transverse grooves.

5. A screw extruder according to claim 1, characterized in that: The material transfer barrel (210) has a cylindrical cavity inside, and the protective inner tube (260) is adapted to penetrate the cylindrical cavity inside the material transfer barrel (210), and an annular gasket is provided at one end of the protective inner tube (260) away from the flow-blocking gasket (230).

6. A screw extruder according to claim 1, characterized in that: A metal filter is installed inside the discharge bin (220), and drainage holes are provided at the bottom of the discharge bin (220).

7. A screw extruder according to claim 1, characterized in that: A semi-cylindrical recessed hole for clamping the motor (330) is provided on the top of the clamp (320), and two clamping strips are installed on the top surface of the clamp (320).

8. A screw extruder according to claim 1, characterized in that: The position-limiting outer frame (410) is composed of an L-shaped load-bearing arm and an annular buckle, and a vertical groove is provided inside the L-shaped load-bearing arm.

9. A screw extruder according to claim 1, characterized in that: The guide rod (420) is in a Z-shaped structure as a whole, and a vertical hole adapted to be constrained by a vertical rod at the top of the cushion column (440) is provided in the straight tube at the top of the guide rod (420).

Images