Extrusion barrel for a two-stage vacuum extruder

Abstract

The application discloses an extrusion box of a double-stage vacuum extruder and relates to the technical field of extruders.The extrusion box comprises a rack, a cylinder barrel is fixedly installed on the top surface of the rack, a machine head is movably connected to the right end of the cylinder barrel, a butt joint assembly for limiting the machine head is arranged on the right side surface of the cylinder barrel, a locking assembly is arranged on the surface of the butt joint assembly, a heat recovery assembly is arranged on the surface of the cylinder barrel, and a cooling assembly is fixedly installed on the surface of the heat recovery assembly.The quick disassembly and assembly of the machine head are realized through cooperation of the butt joint assembly and the locking assembly, the heat generated during operation of the cylinder barrel is recovered through the heat recovery assembly, the cylinder barrel is actively cooled through the cooling assembly, and the convenient disassembly and assembly of the machine head and the recycling and temperature control of the heat of the cylinder barrel are realized.

Description

Technical Field

[0001] This invention relates to the field of extruder technology, and more specifically to an extrusion box for a two-stage vacuum extruder. Background Technology

[0002] Two-stage vacuum extruders are key equipment in the brick, tile, ceramics, and other building materials industries for extruding clay into shapes. Their extrusion chamber typically consists of a cylinder and a die head. The clay is pushed and extruded through a screw conveyor within the cylinder and then extruded into shape from the outlet at the end of the die head. In actual production, due to changes in clay composition, adjustments to product specifications, or wear on the inner wall of the die head, frequent replacement or disassembly of the die head for cleaning and maintenance is necessary.

[0003] Currently, the extruder die head and cylinder are typically connected using a flange and multiple bolts. Installation and disassembly require tightening or loosening numerous bolts individually, a cumbersome and time-consuming process that significantly impacts equipment maintenance efficiency and production line downtime. Furthermore, during extruder operation, the material is subjected to intense screw compression within the cylinder, generating substantial frictional heat and causing the cylinder temperature to rise continuously. Excessive heat causes the moisture in the material to evaporate, resulting in dry and hardened material. This not only increases extrusion resistance and accelerates screw wear but also affects the quality of the extruded product. Currently, this heat generated during extruder operation is not effectively recovered and utilized, leading to energy waste.

[0004] To address this, an extrusion chamber for a two-stage vacuum extruder is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an extrusion box for a two-stage vacuum extruder in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention specifically adopts the following technical solution: An extrusion box for a two-stage vacuum extruder includes a frame, a cylinder is fixedly mounted on the top surface of the frame, a die head is movably engaged at the right end of the cylinder, a docking assembly for limiting the die head is provided on the right side of the cylinder, a locking assembly is provided on the surface of the docking assembly, a heat recovery assembly is provided on the surface of the cylinder, and a cooling assembly is fixedly mounted on the surface of the heat recovery assembly.

[0007] Furthermore, the docking assembly includes a positioning seat, which is fixedly connected to the right side of the cylinder. The positioning seat has a positioning groove on its surface. An installation seat is fixedly installed on the right side of the cylinder, and the machine head is movably inserted into the inner wall of the installation seat. A positioning block is fixedly connected to the surface of the machine head, and the positioning block is movably engaged with the inner wall of the positioning groove.

[0008] Furthermore, the locking assembly includes a threaded rod, which is rotatably connected to the inner wall of the positioning seat. An L-shaped insert is threaded onto the surface of the threaded rod, and the L-shaped insert is movably inserted into the positioning seat. A through hole is provided on the top surface of the positioning block, and the inner wall of the through hole is movably inserted into the end of the L-shaped insert. A worm gear is rotatably connected to the inner wall of the positioning seat, and a handwheel is fixedly connected to the end of the worm gear. A worm wheel is fixedly sleeved on the surface of the threaded rod, and the worm wheel meshes with the worm gear.

[0009] Furthermore, the heat recovery assembly includes a water storage tank, which is fixedly sleeved on the surface of the cylinder. A water inlet and a drain valve are fixedly inserted into the surface of the water storage tank.

[0010] Furthermore, the cooling assembly includes a thermoelectric cooler, which is fixedly mounted on the surface of the water storage tank. The cold end of the thermoelectric cooler is fixedly connected to a heat-conducting plate, which is located inside the water storage tank. The hot end of the thermoelectric cooler is fixedly connected to a heat dissipation fin. A mounting plate is fixedly connected to the surface of the water storage tank, and a cooling fan is fixedly mounted on the surface of the mounting plate.

[0011] Furthermore, the number of docking components is two sets, and the two sets of docking components are symmetrically arranged on the front and rear sides of the machine head.

[0012] The beneficial effects of this invention are as follows: 1. This invention achieves rapid alignment and installation of the machine head and cylinder by engaging the positioning block and positioning groove in the docking assembly. At the same time, the worm gear in the locking assembly drives the worm wheel to rotate the threaded rod, causing the L-shaped insert to automatically insert or exit the insertion hole on the positioning block. This achieves rapid locking and releasing of the machine head without the need to disassemble and install bolts one by one, significantly shortening the time for machine head replacement and maintenance and improving equipment maintenance efficiency. 2. The heat generated during cylinder operation is absorbed by the water in the water tank of the heat recovery component, and the originally lost heat is recovered and reused in the form of hot water, which effectively reduces energy waste. The water in the water tank is actively cooled by the semiconductor refrigeration chip in the cooling component, so that the water temperature is kept at a low level, ensuring the continuous cooling effect of the cylinder and avoiding the problem of the mud becoming dry and hard due to excessive temperature. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a cross-sectional view of the docking component of the present invention; Figure 3 This is a side view of the structure of the present invention; Figure 4 This is the present invention. Figure 3 A sectional view; Reference numerals: 1. Frame; 2. Cylinder; 3. Head; 4. Docking assembly; 401. Positioning seat; 402. Positioning groove; 403. Positioning block; 404. Mounting seat; 5. Locking assembly; 501. Threaded rod; 502. L-shaped insert rod; 503. Worm gear; 504. Handwheel; 505. Worm wheel; 6. Heat recovery assembly; 601. Water tank; 602. Water inlet; 603. Drain valve; 7. Cooling assembly; 701. Semiconductor cooling chip; 702. Heat dissipation fins; 703. Mounting plate; 704. Cooling fan. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0016] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0017] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that provides control.

[0018] In the description of the embodiments of the present invention, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0019] like Figures 1 to 4As shown, the extrusion box of a two-stage vacuum extruder includes a frame 1. A cylinder 2 is fixedly mounted on the top surface of the frame 1. A die head 3 is movably engaged at the right end of the cylinder 2. A docking assembly 4 for limiting the die head 3 is provided on the right side of the cylinder 2. The docking assembly 4 includes a positioning seat 401, which is fixedly connected to the right side of the cylinder 2. A positioning groove 402 is formed on the surface of the positioning seat 401. An mounting seat 404 is fixedly mounted on the right side of the cylinder 2, and the die head 3 is movably inserted into the inner wall of the mounting seat 404. A positioning block 403 is fixedly connected to the surface of the die head 3, and the positioning block 403 is movably engaged with the inner wall of the positioning groove 402. More specifically, the mounting seat 404 is an annular seat structure, the inner diameter of which is adapted to the outer diameter of the die head 3. The left end of the die head 3 is inserted into the mounting seat 404 to achieve initial positioning and engagement. The positioning block 403 corresponds to the positioning groove 402 on the positioning seat 401. When the machine head 3 is inserted into the mounting seat 404, the positioning block 403 moves with the machine head 3 and engages in the positioning groove 402. The positioning groove 402 provides guidance and limitation for the insertion of the positioning block 403, preventing the machine head 3 from rotating circumferentially relative to the cylinder 2, while ensuring the axial alignment accuracy between the machine head 3 and the cylinder 2. Two sets of docking components 4 are symmetrically arranged on the front and rear sides of the machine head 3, so that the front and rear sides of the machine head 3 are simultaneously guided and limited during installation, resulting in balanced force and more accurate and reliable positioning. Through these docking components 4, rapid alignment and anti-rotation positioning of the machine head are achieved.

[0020] A locking component 5 is provided on the surface of the docking component 4. The locking component 5 includes a threaded rod 501, which is rotatably connected to the inner wall of the positioning seat 401. An L-shaped insert rod 502 is threadedly connected to the surface of the threaded rod 501, and the L-shaped insert rod 502 is movably inserted into the positioning seat 401. A through hole is provided on the top surface of the positioning block 403, and the inner wall of the through hole is movably inserted into the end of the L-shaped insert rod 502. A worm gear 503 is rotatably connected to the inner wall of the positioning seat 401. A handwheel 504 is fixedly connected to the end of the worm gear 503. A worm wheel 505 is fixedly sleeved on the surface of the threaded rod 501, and the worm wheel 505 meshes with the worm gear 503. It should be noted that when the operator rotates the handwheel 504, the handwheel 504 drives the worm gear 503 to rotate. The worm gear 503 drives the threaded rod 501 to rotate through the worm wheel 505. The threaded rod 501 drives the L-shaped insert rod 502 to move vertically through threaded transmission. When the handwheel 504 is rotated forward, the L-shaped insert rod 502 moves downward, and its bottom end inserts into the socket of the positioning block 403, locking the machine head 3 onto the cylinder 2. When the handwheel 504 is rotated in the reverse direction, the L-shaped insert rod 502 moves upward and exits the socket, releasing the lock on the machine head 3. At this time, the machine head 3 can be pulled out from the mounting base 404. Through this locking component 5, the machine head can be quickly locked and released without the need for any tools.

[0021] A heat recovery assembly 6 is provided on the surface of the cylinder barrel 2. The heat recovery assembly 6 includes a water storage tank 601, which is fixedly sleeved on the surface of the cylinder barrel 2. A water inlet 602 and a drain valve 603 are fixedly inserted into the surface of the water storage tank 601. More specifically, the water storage tank 601 is in close contact with the outer wall of the cylinder barrel 2 to achieve good heat conduction. The water inlet 602 is used to inject cooling water into the water storage tank 601. The drain valve 603 is used to discharge hot water from the water storage tank 601 when needed. During the operation of the extruder, the cylinder barrel 2 generates a large amount of heat due to the friction of the extruded clay. The heat is conducted through the cylinder barrel wall to the water inside the water storage tank 601. The water absorbs the heat and its temperature rises. The hot water discharged through the drain valve 603 can be used in other sections that require heat energy (such as clay preheating, workshop heating, etc.), realizing the recovery and utilization of waste heat. Cold water is continuously replenished through the water inlet 602 to maintain the continuity of heat recovery. The heat recovery component 6 effectively utilizes the waste heat generated during extruder operation, saving energy.

[0022] A cooling assembly 7 is fixedly mounted on the surface of the heat recovery assembly 6. The cooling assembly 7 includes a thermoelectric cooler 701, which is fixedly mounted on the surface of the water storage tank 601. A cooling fin is fixedly connected to the cold end of the thermoelectric cooler 701, and the cooling fin is located inside the water storage tank 601. A heat dissipation fin 702 is fixedly connected to the hot end of the thermoelectric cooler 701. A mounting plate 703 is fixedly connected to the surface of the water storage tank 601, and a cooling fan 704 is fixedly mounted on the surface of the mounting plate 703. It should be noted that the cold end of the thermoelectric cooler 701 extends through the wall of the water storage tank 601 into the interior of the water storage tank 601, while the hot end is exposed to the outside air. The cooling fin is located inside the water storage tank 601 and is immersed in water. The cooling fin is made of a metal material with high thermal conductivity and is finned to increase the contact area with water, efficiently transferring the cooling capacity of the cold end to the water for active cooling. The heat dissipation fin 702 is used to quickly dissipate the heat generated at the hot end to the surrounding air. When the semiconductor cooling chip 701 is powered on, its cold end cools the water in the water storage tank 601 through the cooling fins, keeping the water temperature at a low level and ensuring continuous and effective cooling of the cylinder 2, preventing the mud from drying out and hardening due to excessive temperature. The heat generated at the hot end is dissipated in a timely manner through the heat dissipation fins 702 and the cooling fan 704. Through this cooling component 7, active cooling of the cylinder is achieved, forming a temperature control system that combines heat recovery and active cooling with the heat recovery component.

[0023] In summary: When installing the extruder head 3, insert the left end of the extruder head 3 into the mounting base 404 on the right side of the cylinder 2, so that the positioning block 403 on the surface of the extruder head 3 engages with the positioning groove 402 of the positioning base 401 to complete the alignment. Rotate the handwheel 504 clockwise, which drives the threaded rod 501 to rotate through the worm gear 503 and worm wheel 505. The L-shaped insert 502 moves downward and inserts into the insertion hole of the positioning block 403, locking the extruder head 3. To disassemble, rotate the handwheel 504 counterclockwise to disengage the L-shaped insert 502 from the insertion hole, and pull the extruder head 3 out to the right. When the extruder is running, the heat generated by the cylinder 2 is conducted through the cylinder wall to the water in the water storage tank 601. The water absorbs heat and its temperature rises. The hot water can be discharged through the drain valve 603 for use in other sections. At the same time, the semiconductor cooling chip 701 is powered on and its cold end actively cools the water in the water storage tank 601 through the cooling plate, so that the water temperature is kept at a low level and the cylinder 2 is kept cool. The heat at the hot end is dissipated through the heat dissipation fins 702 and the cooling fan 704.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. An extrusion chamber for a two-stage vacuum extruder, characterized in that, The machine includes a frame (1), on the top surface of which a cylinder (2) is fixedly mounted. The right end of the cylinder (2) is movably connected to a machine head (3). The right side of the cylinder (2) is provided with a docking component (4) for limiting the machine head (3). The surface of the docking component (4) is provided with a locking component (5). The surface of the cylinder (2) is provided with a heat recovery component (6). The surface of the heat recovery component (6) is fixedly mounted with a cooling component (7).

2. The extrusion box of a two-stage vacuum extruder according to claim 1, characterized in that, The docking assembly (4) includes a positioning seat (401), and the positioning seat (401) is fixedly connected to the right side of the cylinder (2). The surface of the positioning seat (401) is provided with a positioning groove (402). The right side of the cylinder (2) is fixedly installed with an mounting seat (404), and the machine head (3) is movably inserted into the inner wall of the mounting seat (404). The surface of the machine head (3) is fixedly connected with a positioning block (403), and the positioning block (403) is movably engaged with the inner wall of the positioning groove (402).

3. The extrusion chamber of a two-stage vacuum extruder according to claim 2, characterized in that, The locking assembly (5) includes a threaded rod (501), which is rotatably connected to the inner wall of the positioning seat (401). An L-shaped insert (502) is threadedly connected to the surface of the threaded rod (501), and the L-shaped insert (502) is movably inserted into the positioning seat (401). The top surface of the positioning block (403) is provided with a through hole, and the inner wall of the through hole is movably inserted into the end of the L-shaped insert (502). A worm gear (503) is rotatably connected to the inner wall of the positioning seat (401). A handwheel (504) is fixedly connected to the end of the worm gear (503). A worm wheel (505) is fixedly sleeved on the surface of the threaded rod (501), and the worm wheel (505) meshes with the worm gear (503).

4. The extrusion box of a two-stage vacuum extruder according to claim 1, characterized in that, The heat recovery assembly (6) includes a water storage tank (601), and the water storage tank (601) is fixedly sleeved on the surface of the cylinder (2). A water inlet (602) and a drain valve (603) are fixedly inserted into the surface of the water storage tank (601).

5. The extrusion box of a two-stage vacuum extruder according to claim 4, characterized in that, The cooling assembly (7) includes a semiconductor cooling chip (701), which is fixedly installed on the surface of the water storage tank (601). The cold end of the semiconductor cooling chip (701) is fixedly connected to a cooling fin, which is located inside the water storage tank (601). The hot end of the semiconductor cooling chip (701) is fixedly connected to a heat dissipation fin (702). The surface of the water storage tank (601) is fixedly connected to a mounting plate (703), and a cooling fan (704) is fixedly installed on the surface of the mounting plate (703).

6. The extrusion chamber of a two-stage vacuum extruder according to claim 2, characterized in that, The number of docking components (4) is two sets, and the two sets of docking components (4) are symmetrically arranged on the front and rear sides of the machine head (3).

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