Feeding device of screw extruder

Abstract

The utility model discloses a feeding device of a screw extruder, which relates to the technical field of screw extruder components, and comprises a base and a feeding cylinder, the top of the base is provided with a screw extruder main body, the top of the screw extruder main body is provided with a limiting cylinder, the bottom of the feeding cylinder is provided with a material storage box, and the bottom of the feeding cylinder is provided with a feeding port. A blocking cover is rotatably arranged at the top of the feeding cylinder, an electromagnetic valve is arranged in the storage box, two sliding openings and positioning blocks are arranged on the opposite sides of the limiting cylinder and the storage box correspondingly, the positioning blocks are slidably inserted into the sliding openings, two dismounting assemblies are arranged in the limiting cylinder and connected with the positioning blocks, and the two dismounting assemblies are connected with the positioning blocks. The dismounting assembly comprises a sliding piece, a mounting opening and a spring, and two cavities are formed in the limiting cylinder. According to the feeding device of the screw extruder, the structure is simple, feeding is stable, and the effect that personnel can conveniently clean the interior of the feeding cylinder is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of screw extruder components, in particular to a feeding device for a screw extruder. Background Art

[0002] The screw extruder relies on the pressure and shear force generated by the rotation of the screw to fully plasticize and evenly mix the material, and then form it through a die. A feeding device is usually provided on the top.

[0003] However, most of the existing screw extruder feeding devices are fixedly installed. Because the inner wall of the feeding device needs to be cleaned before changing the material to avoid mixing of different materials and affecting the processing quality, it is not convenient to clean the inner wall if the feeding device is fixed. There are a few detachable feeding devices, but most of them require a large number of bolts for installation, which makes disassembly and assembly still troublesome.

[0004] For example, an existing patent (publication number: CN215589893U) discloses a feeding device for a twin-screw extruder, wherein two fixing plates are provided with ten fixing holes, and a total of ten fixing bolts penetrate through the fixing holes on the two fixing members and the fixing plates.

[0005] The feeding device of the screw extruder designed as above requires a large number of bolts to install the feed hopper thereon. Since the feeding device is located at a high place, it is troublesome to disassemble and assemble the bolts. There will be certain inconveniences when it is necessary to clean the waste residue inside the feeding device. For this reason, we designed a feeding device for a screw extruder to solve the above problems. Utility Model Content

[0006] The utility model provides a feeding device for a screw extruder, which solves the problem that most of the feeding devices for existing screw extruders are inconvenient to disassemble and clean.

[0007] In order to solve the above technical problems, the utility model provides a feeding device of a screw extruder, comprising a base and a feeding barrel, a screw extruder main body is arranged on the top of the base, a limiting barrel is integrally formed on the top of the screw extruder main body, a storage box is integrally formed on the bottom of the feeding barrel, a sealing cover is rotatably arranged on the top of the feeding barrel, a solenoid valve is arranged in the storage box, two positioning blocks are symmetrically arranged on the bottom of the storage box, two sliding openings are opened on the top of the limiting barrel, the positioning blocks are slidably inserted in the sliding openings, two disassembly components are symmetrically arranged in the limiting barrel, the disassembly components are used to limit the positioning blocks, and the disassembly components are connected to the positioning blocks.

[0008] Preferably, the disassembly assembly includes a slide, a positioning rod, an installation port and a spring, two cavities are symmetrically arranged in the limiting cylinder, the slide is slidably connected in the cavity, the positioning rod is fixedly inserted in the slide, the installation port is opened on one side of the positioning block, one end of the positioning rod is slidably inserted in the installation port, the spring is sleeved on the positioning rod, and the two ends of the spring are respectively fixedly connected to the slide and the side wall of the cavity.

[0009] Preferably, a pull block is provided at the other end of the positioning rod, and the pull block abuts against the outer surface of the limiting cylinder.

[0010] Preferably, the outer surface of the pulling block is provided with anti-slip textures.

[0011] Preferably, the bottom of the positioning block and one side of the positioning rod are both provided with inclined surfaces, and the bottom of the positioning block and one side of the positioning rod are matched and abutted against each other.

[0012] Preferably, a rotating shaft is rotatably connected in the feeding barrel, a plurality of stirring rods are arranged on both sides of the rotating shaft, a motor is arranged on the top of the blocking cover, and a driving shaft of the motor is drivingly connected to one end of the rotating shaft.

[0013] Preferably, two scrapers are symmetrically arranged in the feeding barrel, and the scrapers are fixedly connected to the stirring rod.

[0014] Preferably, a limiting plate is provided on one side of the feeding cylinder and the sealing cover, and a screw is inserted into the inner thread of the limiting plate.

[0015] Compared with the related art, the feeding device of the screw extruder provided by the utility model has the following beneficial effects:

[0016] 1. In the utility model, by pulling the positioning rod, the compression spring of the slide can be shortened, so that one end of the positioning rod slides out of the mounting port, and the positioning of the positioning block can be released. Then, the feeding barrel can be removed from the limiting barrel by pulling the feeding barrel vertically upward, which solves the problem that most of the feeding devices of the existing screw extruders are not easy to disassemble and clean, and realizes the effect of facilitating personnel to clean the inside of the feeding barrel.

[0017] 2. In the utility model, by turning on the motor, the stirring rod can be rotated in the feeding barrel, thereby preventing the material in the feeding barrel from solidifying. By providing a scraper, the material attached to the side wall of the feeding barrel can be scraped off, preventing the material from being attached to the side wall of the feeding barrel for a long time and causing difficulty in cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the external three-dimensional structure of a feeding device of a screw extruder;

[0019] Figure 2It is a schematic diagram of the planar structure inside the limiting barrel of a feeding device of a screw extruder;

[0020] Figure 3 It is a schematic diagram of the planar structure inside the feeding barrel of a feeding device of a screw extruder;

[0021] Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0022] Numbers in the figure: 1. Screw extruder body; 2. Limiting cylinder; 3. Feeding cylinder; 4. Storage box; 5. Sealing cover; 6. Solenoid valve; 7. Sliding mouth; 8. Positioning block; 9. Sliding piece; 10. Positioning rod; 11. Mounting mouth; 12. Spring; 13. Rotating shaft; 14. Stirring rod; 15. Scraper; 16. Motor. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] In the description of the present utility model, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like are involved, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Embodiment 1

[0027] Depend on Figure 1 , 2 4 shows a feeding device for a screw extruder, comprising a base and a feeding barrel 3, a screw extruder body 1 is arranged on the top of the base, a limiting barrel 2 is integrally formed on the top of the screw extruder body 1, a storage box 4 is integrally formed on the bottom of the feeding barrel 3, a sealing cover 5 is rotatably arranged on the top of the feeding barrel 3, a solenoid valve 6 is arranged in the storage box 4, two positioning blocks 8 are symmetrically arranged on the bottom of the storage box 4, two sliding openings 7 are provided on the top of the limiting barrel 2, the positioning blocks 8 are slidably inserted in the sliding openings 7, two disassembly components are symmetrically arranged in the limiting barrel 2, the disassembly components are used to limit the positioning blocks 8, the disassembly components are connected to the positioning blocks 8, and the solenoid valve 6 is opened to allow the material in the feeding barrel 3 to fall into the screw extruder body 1 through the storage box 4 and the limiting barrel 2.

[0028] The disassembly assembly includes a slide 9, a positioning rod 10, an installation port 11 and a spring 12. Two cavities are symmetrically arranged in the limit cylinder 2. The slide 9 is slidably connected in the cavity, the positioning rod 10 is fixedly inserted in the slide 9, the installation port 11 is opened on one side of the positioning block 8, one end of the positioning rod 10 is slidably inserted in the installation port 11, and the spring 12 is sleeved on the positioning rod 10. The two ends of the spring 12 are respectively fixedly connected to the slide 9 and the side wall of the cavity. A limiting plate is provided on one side of the feeding barrel 3 and the sealing cover 5, and a screw is inserted into the inner thread of the limiting plate.

[0029] When it is necessary to disassemble the feeding barrel 3 from the limiting barrel 2 for cleaning, first pull one end of the positioning rod 10 so that the positioning rod 10 drives the sliding piece 9 to shorten the compression spring 12, and at the same time makes the other end of the positioning rod 10 slide out of the mounting opening 11, so as to release the limit of the positioning block 8, and finally pull the feeding barrel 3 upward to separate the feeding barrel 3 from the limiting barrel 2 and remove it, and then turn the screw to open the sealing cover 5, and then the inside of the feeding barrel 3 can be cleaned. According to the above principle, the feeding barrel 3 can be conveniently installed on the limiting barrel 2, so as to achieve the effect of convenient cleaning of the inside of the feeding barrel 3.

[0030] A pull block is provided at the other end of the positioning rod 10, and the pull block abuts against the outer surface of the limiting cylinder 2. Pulling the pull block can drive the positioning rod 10 to move, and can better apply force when a person pulls the positioning rod 10. For the positioning rod 10, by providing an anti-slip pattern on the outer surface of the positioning rod 10, the friction between the person's hand and the pull block can be increased, thereby helping to solve the problem of slipping when pulling the pull block.

[0031] The bottom of the positioning block 8 and one side of the positioning rod 10 are both provided with inclined surfaces, and the bottom of the positioning block 8 and one side of the positioning rod 10 are matched and abutted. The positioning block 8 can be easily pushed by the positioning rod 10, so as to quickly position the positioning block 8. For the solenoid valve 6, the gate valve is usually controlled by electromagnetics, and the flow direction of the gate valve is perpendicular to the fluid direction. The principle is: when the power is turned on, the solenoid valve coil generates electromagnetic force, lifts the closing member from the valve seat, and the valve is opened. When the power is turned off, the electromagnetic force disappears, and the elastic force presses the closing member on the valve seat, and the valve is closed. Since the valve belongs to the prior art, it is not explained in detail in this manual.

[0032] Embodiment 2

[0033] Depend on Figure 1 and Figure 3 A feeding device for a screw extruder is provided, comprising a base and a feeding barrel 3, a screw extruder body 1 is arranged on the top of the base, a limiting barrel 2 is arranged integrally on the top of the screw extruder body 1, a storage box 4 is arranged integrally on the bottom of the feeding barrel 3, a blocking cover 5 is rotatably arranged on the top of the feeding barrel 3, a solenoid valve 6 is arranged in the storage box 4, two positioning blocks 8 are symmetrically arranged at the bottom of the storage box 4, two sliding openings 7 are provided on the top of the limiting barrel 2, the positioning blocks 8 are slidably inserted in the sliding openings 7, a rotating shaft 13 is rotatably connected in the feeding barrel 3, a plurality of stirring rods 14 are arranged on both sides of the rotating shaft 13, a motor 16 is arranged on the top of the blocking cover 5, and the driving shaft of the motor 16 is transmission-connected to one end of the rotating shaft 13. By turning on the motor 16, the stirring rod 14 can be rotated in the feeding barrel 3, thereby preventing the material in the feeding barrel 3 from solidifying.

[0034] There are two scrapers 15 symmetrically arranged in the feeding barrel 3, and the scrapers 15 are fixedly connected to the stirring rod 14. By setting the scrapers 15, the scrapers 15 can move with the stirring rod 14 to scrape off the material attached to the side wall of the feeding barrel 3, preventing the material from being attached to the side wall of the feeding barrel 3 for a long time and causing the problem of being difficult to clean.

[0035] Regarding the control of the motor 16, a control box is provided on the top of the base, and the control box is electrically connected to the motor 16 and the screw extruder body 1. By operating the control box, the control box can send electrical signals to the motor 16 and the screw extruder body 1 and activate them, thereby achieving the purpose of conveniently controlling the motor 16 and the screw extruder body 1. Since the control box is a prior art, it will not be described in detail in this specification.

[0036] Working principle:

[0037] When in use, the motor 16 is turned on, so that the rotating shaft 13 drives the stirring rod 14 to stir the material in the feeding barrel 3 to prevent the material in the feeding barrel 3 from solidifying and being difficult to discharge. At the same time, the scraper 15 moves with the stirring rod 14 to scrape off the material attached to the side wall of the feeding barrel 3, and then the solenoid valve 6 is opened to allow the material in the feeding barrel 3 to fall into the screw extruder body 1 through the storage box 4 and the limit barrel 2.

[0038] When it is necessary to disassemble the feeding barrel 3 from the limiting barrel 2 for cleaning, first pull the pull block to make the positioning rod 10 drive the sliding piece 9 to shorten the compression spring 12, and at the same time make one end of the positioning rod 10 slide out of the installation opening 11, so as to release the limit of the positioning block 8, and finally pull the feeding barrel 3 upward to separate the feeding barrel 3 from the limiting barrel 2 and remove it, and then turn the screw to open the sealing cover 5, and then the inside of the feeding barrel 3 can be cleaned, and the feeding barrel 3 can be conveniently installed on the limiting barrel 2 according to the above principle.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A feeding device for a screw extruder, comprising a base and a feeding barrel (3), characterized in that: A screw extruder body (1) is arranged on the top of the base, a limiting cylinder (2) is arranged on the top of the screw extruder body (1), a material storage box (4) is arranged on the bottom of the feeding cylinder (3), a sealing cover (5) is rotatably arranged on the top of the feeding cylinder (3), a solenoid valve (6) is arranged in the material storage box (4), two sliding openings (7) and a positioning block (8) are respectively arranged on the opposite sides of the limiting cylinder (2) and the material storage box (4), and the positioning block (8) is slidably inserted in the sliding opening (7), and two disassembly components are arranged in the limiting cylinder (2), and the disassembly components are connected to the positioning block (8).

2. A feeding device for a screw extruder according to claim 1, characterized in that: The disassembly assembly comprises a slide (9), an installation opening (11) and a spring (12); two cavities are arranged in the limiting cylinder (2); the slide (9) is slidably connected in the cavity and a positioning rod (10) is fixedly inserted inside; the installation opening (11) is opened on one side of the positioning block (8); one end of the positioning rod (10) is slidably inserted in the installation opening (11); the spring (12) is sleeved on the positioning rod (10) and its two ends are respectively connected to the slide (9) and the side wall of the cavity.

3. A feeding device for a screw extruder according to claim 2, characterized in that: The other end of the positioning rod (10) is provided with a pulling block.

4. A feeding device for a screw extruder according to claim 3, characterized in that: The outer surface of the pulling block is provided with anti-slip textures.

5. A feeding device for a screw extruder according to claim 2, characterized in that: The bottom of the positioning block (8) and one side of the positioning rod (10) are both provided with inclined surfaces and are matched and abutted against each other.

6. A feeding device for a screw extruder according to claim 1, characterized in that: A rotating shaft (13) is rotatably connected inside the feeding barrel (3), and a plurality of stirring rods (14) are arranged on both sides of the rotating shaft (13). A motor (16) is arranged on the top of the blocking cover (5), and the motor (16) is transmission-connected to the rotating shaft (13).

7. A feeding device for a screw extruder according to claim 6, characterized in that: Two scrapers (15) are arranged in opposition to each other in the feeding cylinder (3), and the scrapers (15) are connected to the stirring rod (14).

8. A feeding device for a screw extruder according to claim 1, characterized in that: A limiting plate is provided on one side of the feeding cylinder (3) and the sealing cover (5), and a screw is inserted into the inner thread of the limiting plate.

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