Screw extrusion device

Abstract

The utility model relates to the technical field of conveying devices, in particular to a screw extrusion device which comprises a supporting base and further comprises an extrusion mechanism arranged on the supporting base, a feeding mechanism connected with the extrusion mechanism and a heating mechanism arranged on the supporting base. The extrusion mechanism comprises a detachable charging barrel assembly arranged in the supporting seat, a charging barrel connecting assembly used for being connected with the detachable charging barrel assembly, a screw extrusion assembly arranged on the detachable charging barrel assembly and a driving assembly; the detachable charging barrel assembly comprises a lower charging barrel and an upper charging barrel capable of being buckled to the lower charging barrel, and the upper charging barrel is fixed through a charging barrel connecting assembly after being buckled to the lower charging barrel. When materials remain after the screw extrusion assembly operates, the upper material barrel and the lower material barrel are separated through the material barrel connecting assembly, and then the double-screw extrusion assembly arranged in the material barrel assembly can be cleaned, so that the residual materials are rapidly cleaned, normal operation is guaranteed, and the problem that the material barrels of an extruder in the related technology are difficult to clean is solved.

Description

Technical Field

[0001] The present application relates to the technical field of conveying devices, and in particular to a screw extruder. Background Art

[0002] Screw extruder is an automatic feeding equipment, generally divided into single screw extruder and twin screw extruder. It makes the material softened by heat and then extruded by screw rotation. It is widely used in extruding rubber semi-finished products and finished products. Ultra-high molecular weight polyethylene (UHMW-PE) is an unbranched linear polyethylene with a molecular weight of more than 1.5 million. It has good chemical stability and can withstand the corrosion of most acids and alkalis. UHMW-PE is insoluble in general solvents at room temperature, has low water absorption, and excellent electrical insulation. It is the core raw material for the production of wet lithium battery diaphragms, but its form is relatively viscous. During extrusion, it will remain inside the barrel of the extruder and increase with the passage of time. Especially after the extruder has been running for a long time, UHMW-PE is easy to block the feed hopper and affect the feeding efficiency. Therefore, it is necessary to clean the inside of the barrel regularly. However, conventional extruders cannot remove the barrel, and the cleaning process is very difficult, time-consuming and labor-intensive. Utility Model Content

[0003] In order to improve the problem that it is difficult to clean the barrel of an extruder in the related art, the utility model provides a screw extrusion device.

[0004] A screw extrusion device comprises a support seat, an extrusion mechanism arranged on the support seat, a feeding mechanism connected to the extrusion mechanism and a heating mechanism arranged on the support seat; the extrusion mechanism comprises a detachable barrel assembly arranged in the support seat, a barrel connecting assembly for connecting the detachable barrel assembly, a screw extrusion assembly and a driving assembly arranged on the detachable barrel assembly; the detachable barrel assembly comprises a lower barrel and an upper barrel that can be buckled with the lower barrel, and the upper barrel is buckled with the lower barrel and fixed by the barrel connecting assembly.

[0005] Furthermore, the lower barrel has a connecting plate on one side close to the upper barrel, and the connecting plate has a connecting groove; the upper barrel has a connecting protrusion corresponding to the connecting plate on one side close to the lower barrel, and the connecting protrusion is buckled on the connecting plate through the connecting groove.

[0006] Furthermore, the barrel connecting assembly includes a connecting frame seat arranged on the connecting plate and a plurality of sliding connecting rods slidably connected to the connecting frame seat; the connecting plate has a first connecting hole, the connecting protrusion has a second connecting hole, and the sliding connecting rods face and can be passed through the first connecting hole and the second connecting hole.

[0007] Furthermore, the connecting frame seat has a limiting slide groove; the sliding connecting rod sleeve is provided with a guide plate, the guide plate is provided with a limiting plate for cooperating with the limiting slide groove, and the limiting plate is slidably connected to the limiting slide groove; the sliding connecting rod sleeve is provided with a reset spring, one end of the reset spring is abutted and connected to the connecting frame seat, and the other end of the reset spring is abutted and connected to the guide plate.

[0008] Furthermore, the feeding mechanism includes a plurality of feeding assemblies connected to the detachable barrel assembly, and the feeding assembly includes a feeding hopper, and a cross plate and a screen plate are provided in the feeding hopper, and the screen plate has a plurality of screen holes.

[0009] Furthermore, the feeding assembly also includes a stirring structure, which includes a stirring shaft arranged on the feeding hopper and a stirring motor for driving the stirring shaft; the stirring shaft is provided with a plurality of stirring rods along its length direction, and the stirring rods are perpendicular to the axial direction of the feeding hopper.

[0010] Furthermore, the stirring shaft is also provided with a conveying auger, and the conveying auger is arranged along the length direction of the stirring shaft.

[0011] Furthermore, the feed assembly also includes a vibration structure, which includes a rotating shaft arranged on one side of the screen plate and a motor for driving the rotating shaft; the rotating shaft is provided with a plurality of cams, and a plurality of the cams are in contact with or disengaged from the screen plate.

[0012] Furthermore, the heating mechanism includes an insulation cover plate, a first heating side plate and a second heating side plate arranged on the support seat; the insulation cover plate is provided with a heating controller electrically connected to the first heating side plate and the second heating side plate; and the support seat is provided with a temperature sensor for detecting the temperature inside the support seat.

[0013] Furthermore, it also includes a height adjustment mechanism, which includes a plurality of telescopic components arranged on the support seat; the telescopic components include a support tube and a support column slidably connected to the support tube.

[0014] The utility model has the following advantages:

[0015] 1. A screw extrusion device of the utility model is provided with a detachable barrel assembly and a barrel connecting assembly. When there is material remaining in the twin-screw extrusion assembly after operation, the detachable barrel assembly is disassembled through the barrel connecting assembly to separate the upper barrel and the lower barrel, and the screw extrusion assembly arranged in the barrel assembly can be cleaned, thereby quickly cleaning the residual material, ensuring the normal operation of the extrusion device, and improving the problem of difficulty in cleaning the barrel of the extruder in the related art.

[0016] 2. When the screw extruder needs to connect the upper barrel with the lower barrel, pull several sliding connecting rods to move outward. At this time, the sliding connecting rod will drive the reset spring to extend through the guide plate, and the reset spring will stretch and deform. At this time, place the upper barrel on top of the lower barrel so that the connecting protrusion is buckled to the connecting plate, release the sliding connecting rod, and under the action of the reset spring, the guide plate drives multiple sets of sliding connecting rods to move back, so that multiple sets of sliding connecting rods are inserted into the first connecting hole and the second connecting hole, thereby fixing the connecting protrusion in the connecting plate, thereby fixing the upper barrel and the lower barrel. When disassembling, you only need to pull the sliding connecting rod to remove the upper barrel from the lower barrel. The disassembly and assembly operation is simple, fast and easy to use.

[0017] 3. By setting up a feeding mechanism, when the material is put into the feed hopper, the material falls on the screen plate, the stirring structure and the vibration structure are running, and the cam swings the screen plate up and down driven by the rotation of the rotating shaft, thereby screening out large particles of viscous materials; when the material falls into the feed hopper through the screen plate, the stirring structure stirs the material continuously to prevent material accumulation, and at the same time, the rotating conveying auger can quickly convey the material in the narrow channel of the feed hopper, effectively avoiding the blockage and accumulation of materials in the feed hopper, and improving the feeding efficiency of the device.

[0018] 4. By setting up a height adjustment mechanism, the height of the device can be easily adjusted to facilitate feeding with different equipment. By setting up a heating mechanism, the temperature sensor is used to measure the temperature information and feed it back to the heating controller. The heating controller receives the feedback and controls the first heating side plate and the second heating side plate, thereby achieving a rapid heating effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the structure of a screw extruder according to an embodiment of the present application;

[0021] Figure 2 It is a structural schematic diagram of an extrusion mechanism in a screw extrusion device;

[0022] Figure 3 for Figure 2 A partial enlarged schematic diagram of part A;

[0023] Figure 4It is a schematic diagram of the exploded structure of the detachable barrel assembly and the barrel connecting assembly in the screw extruder;

[0024] Figure 5 for Figure 4 A partial enlarged schematic diagram of part B;

[0025] Figure 6 It is a schematic diagram of the cross-sectional structure of a feed assembly in a screw extruder;

[0026] Figure 7 It is a schematic diagram of the structure of the heating mechanism in the screw extruder;

[0027] Figure 8 It is a schematic diagram of the structure of the telescopic component in the screw extruder.

[0028] Description of reference numerals:

[0029] 1. Support seat; 11. Support plate; 2. Extrusion mechanism; 21. Removable barrel assembly; 211. Lower barrel; 2111. Connecting plate; 212. Upper barrel; 2121. Connecting convex block; 213. Connecting end cover; 22. Barrel connecting assembly; 221. Connecting frame seat; 2211. Limiting slide groove; 222. Sliding connecting rod; 2221. Guide plate; 22211. Limiting plate; 2222. Return spring; 223. Fixed plate; 23. Screw extrusion assembly; 231. First screw; 232. Second screw; 24. Driving assembly; 241. Driving motor; 25. Exhaust pipe; 3. Feeding mechanism; 31. Feeding assembly; 311. Feed hopper; 3111. Side support frame; 312. Cross plate; 313. Screen plate; 3131. Vibration spring; 314. Stirring structure; 3141. Stirring shaft; 3124. Stirring rod; 3143. Conveying auger; 315. Vibration structure; 3151. Rotating shaft; 3152. Cam; 4. Heating mechanism; 41. Insulating cover plate; 42. First heating side plate; 43. Second heating side plate; 44. Heating controller; 45. Temperature sensor; 5. Height adjustment mechanism; 51. Telescopic assembly; 511. Support cylinder; 512. Support column; 5121. Compression spring; 5122. Clamp column; 513. Suction cup. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0031] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0036] Reference Figure 1 and Figure 2 A screw extrusion device includes a support base 1, an extrusion mechanism 2 arranged on the support base 1, a feeding mechanism 3 connected to the extrusion mechanism 2, a heating mechanism 4 arranged on the support base 1, and a height adjustment mechanism 5.

[0037] The support seat 1 is arranged horizontally, and the support seat 1 is used to support and connect various mechanisms. The extrusion mechanism 2 includes a detachable barrel assembly 21 arranged in the support seat 1, a barrel connecting assembly 22 for connecting the detachable barrel assembly 21, a screw extrusion assembly 23 arranged in the detachable barrel assembly 21, and a driving assembly 24 for driving the screw extrusion assembly 23. Specifically, in order to facilitate cleaning, the detachable barrel assembly 21 includes a lower barrel 211, an upper barrel 212 that can be buckled on the lower barrel 211, and a connecting end cover 213 arranged at one end of the upper and lower barrels 211. A sealing rubber ring is arranged on the inner wall of the lower barrel 211 and the upper barrel 212. When the upper and lower barrels 211 are buckled, a closed material processing environment can be formed. The connecting end cover 213 is the discharge end. After the material is extruded, it is transported to other equipment through the connecting end cover 213.

[0038] In this embodiment, the lower barrel 211 has a connecting plate 2111 on one side close to the upper barrel 212, and there are two connecting plates 2111, which are respectively located at the two ends of the lower barrel 211, and the connecting plate 2111 has a connecting groove on one side close to the lower barrel 211. Correspondingly, the upper barrel 212 has a connecting protrusion 2121 corresponding to the connecting plate 2111 on one side close to the lower barrel 211, and there are two connecting protrusions 2121, which correspond to the two connecting plates 2111, respectively, and the connecting protrusion 2121 is buckled with the connecting plate 2111 through the connecting groove.

[0039] Reference Figure 2 and Figure 3, by snapping the upper barrel 212 onto the lower barrel 211, the upper barrel 212 can be temporarily snapped onto and installed on the lower barrel 211, and after the upper barrel 212 is snapped onto the lower barrel 211, it will be fixed by the barrel connecting assembly 22. Specifically, the barrel connecting assembly 22 includes a connecting frame seat 221 provided on the connecting plate 2111 and a plurality of sliding connecting rods 222 slidably connected to the connecting frame seat 221; the connecting plate 2111 has a plurality of first connecting holes, and the plurality of first connecting holes are arranged along the length direction of the connecting plate 2111; the connecting protrusion 2121 has a second connecting hole, and the second connecting hole is arranged along the length direction of the connecting protrusion 2121 and corresponds to the first connecting hole to form a plurality of groups of connecting holes, and the sliding connecting rod 222 faces and can be penetrated through each group of the first connecting hole and the second connecting hole, thereby achieving the fixing of the upper barrel 212 and the lower barrel 211.

[0040] Reference Figure 4 and Figure 5 In order to conveniently drive the sliding connecting rod 222, the two ends of the connecting frame seat 221 in the length direction are provided with limiting slide grooves 2211; the sliding connecting rod 222 is provided with a guide plate 2221, and the two ends of the guide plate 2221 in the length direction are provided with limiting plates 22211 for cooperating with the limiting slide groove 2211, the limiting plate 22211 is in a "T" shape, and the limiting plate 22211 is slidably connected with the limiting slide groove 2211; at the same time, the sliding connecting rod 222 is provided with a return spring 2222, one end of the return spring 2222 is abutted and connected to the connecting frame seat 221, and the other end of the return spring 2222 is abutted and connected to the guide plate 2221, and the return spring 2222 applies a continuous force toward the connecting plate 2111 to the guide plate 2221. In addition, a fixing plate 223 is provided at one end of the sliding connecting rod 222 away from the unloading barrel 211 , and a handle is provided on the fixing plate 223 to facilitate pulling a plurality of sliding connecting rods 222 together.

[0041] By such arrangement, when the lower barrel 211 and the upper barrel 212 need to be installed, the plurality of sliding connecting rods 222 are pulled outward by the fixing plate 223, and the sliding connecting rods 222 will drive the return spring 2222 to extend through the guide plate 2221, and the return spring 2222 is stretched and deformed. At this time, the upper barrel 212 is placed above the lower barrel 211, so that the connecting protrusion 2121 is buckled to the connecting plate 2111, and the sliding connecting rod 222 is released. Under the action of the return spring 2222, the guide plate 2221 drives the plurality of sliding connecting rods 222 to move back, so that the plurality of sliding connecting rods 222 are inserted into the first connecting hole and the second connecting hole, thereby fixing the connecting protrusion 2121 in the connecting plate 2111, and fixing the upper barrel 212 and the lower barrel 211. When disassembling, the upper barrel 212 can be removed from the lower barrel 211 by simply pulling the sliding connecting rod 222.

[0042] The screw extrusion assembly 23 includes a first screw 231 and a second screw 232 arranged in the detachable barrel assembly 21. The outer wall of the first screw 231 is fixed with a plurality of first spiral blades, and the first spiral blades have a plurality of different types of spirals; the outer wall of the second screw 232 is fixed with a plurality of second spiral blades. In order to drive the screw extrusion assembly 23, the driving assembly 24 includes a driving motor 241, and one side of the support seat 1 has a supporting plate 11, and the driving motor 241 is installed on the supporting plate 11. The output end of the driving motor 241 is coaxially connected with a rotating shaft, and the rotating shaft is installed with a coupling, and the coupling is sleeved to the first screw 231. When the driving motor 241 is running, the first screw 231 can be driven to rotate. The first screw 231 is provided with a first spur gear, and the second screw 232 is provided with a second spur gear, and the first spur gear is meshed with the second spur gear.

[0043] After the driving motor 241 drives the rotating shaft to rotate, the rotating shaft drives the first screw 231 to rotate through the coupling, and the first screw 231 transmits power to the second screw 232 through the first spur gear and the second spur gear, so that the second screw 232 rotates together, and then the material is extruded toward the connecting end cap 213 through the first spiral blade and the second spiral blade, thereby realizing the extrusion function. In addition, the extrusion mechanism 2 also includes an exhaust pipe 25 connected to the detachable barrel assembly 21, and a valve body is provided in the exhaust pipe 25, and the exhaust pipe 25 serves to discharge excess gas.

[0044] Reference Figure 6 The feeding mechanism 3 includes a plurality of feeding assemblies 31 connected to the detachable barrel assembly 21. In this embodiment, there are two feeding assemblies 31, and the two feeding assemblies 31 are arranged and connected to the upper barrel. The feeding assembly 31 includes a feeding hopper 311, and a cross plate 312 and a screen plate 313 are arranged in the feeding hopper 311. The screen plate 313 has a plurality of sieve holes to screen out the material. In addition, the feeding assembly 31 also includes a stirring structure 314 and a vibration structure 315 to avoid material blockage and ensure the feeding efficiency of the material.

[0045] Specifically, the stirring structure 314 includes a stirring shaft 3141 disposed on the feed hopper 311 and a stirring motor for driving the stirring shaft 3141, and the stirring motor is mounted and fixed on the cross plate 312. In this embodiment, the diameter of the feed hopper 311 is gradually reduced, the stirring shaft 3141 is vertically arranged and rotatably connected to the screen plate 313, and the stirring shaft 3141 is provided with a plurality of stirring rods 3124 of different lengths along its length direction, and the length of the stirring rods 3124 is gradually shortened from the top to the bottom of the feed hopper 311 to adapt to the diameter of the feed hopper 311, and the stirring rods 3124 are perpendicular to the axis direction of the feed hopper 311. At the same time, a conveying auger 3143 is also provided below the stirring shaft 3141, and the conveying auger 3143 is located below the plurality of stirring rods 3124 and is arranged along the length direction of the stirring shaft 3141, and the size of the conveying auger 3143 is adapted to the diameter of the feed hopper 311.

[0046] By setting up the stirring structure 314, under the drive of the stirring motor, the stirring rod 3124 stirs the material during feeding to prevent the material from accumulating in the feed hopper 311, and the conveying auger 3143 quickly conveys the material through the narrow part of the feed hopper 311 to the detachable barrel assembly 21, thereby preventing the feed hopper 311 from being blocked.

[0047] The vibration structure 315 includes a rotating shaft 3151 disposed on one side of the screen plate 313 and a motor for driving the rotating shaft 3151. The rotating shaft 3151 is provided with a plurality of cams 3152, and the plurality of cams 3152 abut against or disengage from the screen plate 313. In order to install the motor, a side support frame 3111 is provided on one side of the feed hopper 311, and the motor is fixedly installed in the side support frame 3111. The rotating shaft 3151 is coaxially installed with the output shaft of the motor. The rotating shaft 3151 starts from the side support frame 3111 on one side and passes through the feed hopper 311, and is connected to the side support frame 3111 on the other side through a bearing to realize rotation. The plurality of cams 3152 are distributed along the length direction of the rotating shaft 3151. When the rotating shaft 3151 is driven by the motor to rotate, the cams 3152 lift and lower the screen plate 313. It should be noted that there may be multiple rotating shafts 3151 below the screen plate 313.

[0048] At the same time, in order to increase the vibration frequency, a vibration spring 3131 is also provided on the screen plate 313, one end of the vibration spring 3131 is connected to the screen plate 313, and the other end of the vibration spring 3131 is provided with a connecting block, which is connected to the inner wall of the feed hopper 311. By providing the vibration spring 3131 in conjunction with the cam 3152, the vibration frequency of the screen plate 313 can be increased, thereby increasing the screening efficiency.

[0049] Reference Figure 7The heating mechanism 4 includes a heat preservation cover plate 41, a first heating side plate 42 and a second heating side plate 43 arranged on the support seat 1. The heat preservation cover plate 41 is located above the support seat 1, and the heat preservation cover plate 41 is provided with an adaption groove for matching the feed hopper 311 and the exhaust pipe 25, and the heat preservation cover plate 41 is provided with a heating controller 44 electrically connected to the first heating side plate 42 and the second heating side plate 43, and the heating controller 44 is a PLC controller. The first heating side plate 42 and the second heating side plate 43 are respectively arranged on both sides of the support seat 1, and the support seat 1 is provided with a temperature sensor 45 for detecting the temperature inside the support seat 1.

[0050] During operation, the heat-insulating cover plate 41 covers the support base 1 to seal and insulate, thereby preventing heat loss during processing. The temperature sensor 45 feeds back the internal temperature to the heating controller 44, and the heating controller 44 controls the temperature of the first heating side plate 42 and the second heating side plate 43 to increase or decrease the internal temperature of the support base 1.

[0051] Reference Figure 8 The height adjustment mechanism 5 includes a plurality of telescopic components 51 disposed on the support base 1; the telescopic components 51 include a support tube 511 and a support column 512 slidably connected to the support tube 511. Specifically, the support column 512 is fixed to the bottom of the support base 1, and a mounting hole is provided on the side wall of the support column 512. A compression spring 5121 is fixed inside the mounting hole, and a clamping column 5122 is fixedly connected to one end of the compression spring 5121. The compression spring 5121 applies a force to the clamping column 5122 away from the support column 512. Accordingly, an adjustment clamping hole is provided on the side of the support tube 511, and there are a plurality of adjustment clamping holes which are linearly distributed on the outer wall of the support tube 511. A suction cup 513 for adsorbing on the ground is fixed on the bottom of the support tube 511. By sliding the support column 512 in the support tube 511 and making the clamping column 5122 extend out of different adjustment clamping holes, the height of the telescopic component 51 can be adjusted, so as to adapt to different feeding equipment and corresponding staff.

[0052] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A screw extruder, comprising a support base (1), characterized in that: It also includes an extrusion mechanism (2) arranged on the support seat (1), a feeding mechanism (3) connected to the extrusion mechanism (2), and a heating mechanism (4) arranged on the support seat (1); the extrusion mechanism (2) includes a detachable barrel assembly (21) arranged in the support seat (1), a barrel connecting assembly (22) for connecting the detachable barrel assembly (21), a screw extrusion assembly (23) and a driving assembly (24) arranged on the detachable barrel assembly (21); the detachable barrel assembly (21) includes a lower barrel (211) and an upper barrel (212) that can be snapped on the lower barrel (211), and the upper barrel (212) is snapped on the lower barrel (211) and fixed by the barrel connecting assembly (22).

2. A screw extruder according to claim 1, characterized in that: The lower barrel (211) has a connecting plate (2111) on one side close to the upper barrel (212), and the connecting plate (2111) has a connecting groove; the upper barrel (212) has a connecting protrusion (2121) corresponding to the connecting plate (2111) on one side close to the lower barrel (211), and the connecting protrusion (2121) is snapped onto the connecting plate (2111) via the connecting groove.

3. A screw extruder according to claim 2, characterized in that: The barrel connecting assembly (22) includes a connecting frame seat (221) arranged on the connecting plate (2111) and a plurality of sliding connecting rods (222) slidably connected to the connecting frame seat (221); the connecting plate (2111) has a first connecting hole, the connecting protrusion (2121) has a second connecting hole, and the sliding connecting rod (222) faces and can be passed through the first connecting hole and the second connecting hole.

4. A screw extruder according to claim 3, characterized in that: The connecting frame seat (221) has a limiting slide groove (2211); the sliding connecting rod (222) is sleeved with a guide plate (2221), and the guide plate (2221) is provided with a limiting plate (22211) for cooperating with the limiting slide groove (2211), and the limiting plate (22211) is slidably connected to the limiting slide groove (2211); the sliding connecting rod (222) is sleeved with a return spring (2222), one end of the return spring (2222) is abutted and connected to the connecting frame seat (221), and the other end of the return spring (2222) is abutted and connected to the guide plate (2221).

5. A screw extruder according to any one of claims 1 to 4, characterized in that: The feeding mechanism (3) comprises a plurality of feeding assemblies (31) connected to the detachable barrel assembly (21), the feeding assembly (31) comprises a feeding hopper (311), a cross plate (312) and a screen plate (313) are arranged in the feeding hopper (311), and the screen plate (313) is provided with a plurality of screen holes.

6. A screw extruder according to claim 5, characterized in that: The feeding assembly (31) also includes a stirring structure (314), wherein the stirring structure (314) includes a stirring shaft (3141) arranged on the feeding hopper (311) and a stirring motor for driving the stirring shaft (3141); the stirring shaft (3141) is provided with a plurality of stirring rods (3124) along its length direction, and the stirring rods (3124) are perpendicular to the axial direction of the feeding hopper (311).

7. A screw extruder according to claim 6, characterized in that: The stirring shaft (3141) is also provided with a conveying auger (3143), and the conveying auger (3143) is arranged along the length direction of the stirring shaft (3141).

8. A screw extruder according to claim 5, characterized in that: The feeding assembly (31) also includes a vibration structure (315), and the vibration structure (315) includes a rotating shaft (3151) arranged on one side of the screen plate (313) and a motor for driving the rotating shaft (3151); the rotating shaft (3151) is provided with a plurality of cams (3152), and the plurality of cams (3152) are in contact with or disengaged from the screen plate (313).

9. A screw extruder according to claim 1, characterized in that: The heating mechanism (4) comprises a heat-insulating cover plate (41), a first heating side plate (42) and a second heating side plate (43) arranged on the support seat (1); the heat-insulating cover plate (41) is provided with a heating controller (44) electrically connected to the first heating side plate (42) and the second heating side plate (43); and the support seat (1) is provided with a temperature sensor (45) for detecting the temperature inside the support seat (1).

10. A screw extruder according to claim 1, characterized in that: It also comprises a height adjustment mechanism (5), wherein the height adjustment mechanism (5) comprises a plurality of telescopic components (51) arranged on the support seat (1); the telescopic components (51) comprise a support tube (511) and a support column (512) slidably connected to the support tube (511).

Images