Water cooling extruder screw

Abstract

The utility model discloses a water cooling extruder screw which comprises a machine body and a screw body, the screw body is installed in the machine body, a rotary joint is movably installed on one side of the screw body, a water outlet pipe is fixedly arranged on one side of the rotary joint in an embedded mode, and a water inlet pipe is fixedly arranged at the lower end of the rotary joint in an embedded mode. The screw comprises a feeding section, a compression section, a plasticizing section and a discharging section. The water inlet pipe is connected with the cooling liquid pipe, so that cooling liquid is injected into the screw rod through the rotating joint via the water inlet pipe, the cooled cooling liquid is discharged through the water outlet pipe, and raw materials are cooled from the inside of the screw rod, so that the whole device has the advantages of quick cooling response, small temperature control deviation and good constant-temperature stability; the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the field of extruder equipment, in particular to a water-cooled extruder screw. Background Art

[0002] An extruder is a plastic machine that is widely used in industries such as plastic products, pipes, films, and cables. Depending on the direction of the material flow in the die and the angle between the center line of the screw, the die can be divided into a right-angle die and an angled die. 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 the die.

[0003] When the existing extruder is in use, the barrel uses external cooling to cool the raw materials. This cooling method has the disadvantages of slow cooling response, large control temperature deviation, poor constant temperature stability, etc., which reduces the practicality of the device. Therefore, a device is urgently needed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a water-cooled extruder screw to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a water-cooled extruder screw, comprising a body and a screw, the screw being installed inside the body, a swivel joint being movably installed on one side of the screw, a water outlet pipe being inlaid and fixedly provided on one side of the swivel joint, a water inlet pipe being inlaid and fixedly provided on the lower end of the swivel joint, the screw comprising a feeding section, a compression section, a plasticizing section and a discharging section, when in use, the water inlet pipe is connected to a coolant pipe, so that the coolant is injected into the screw through the water inlet pipe and the swivel joint, and the coolant after cooling is completed is discharged through the water outlet pipe, and the raw material is cooled from the inside of the screw, so that the whole device has the advantages of fast cooling response, small control temperature deviation and good constant temperature stability, thereby improving the practicality of the device.

[0006] Preferably, the machine body includes a base, a main motor, a reducer, a screw barrel, a hopper and a heater, a track wheel is installed at the lower end of the base, the main motor is fixed at the top position of the base, the reducer is fixed at the output end position of the main motor, the screw barrel is installed on one side of the reducer, the screw is movably inserted inside the screw barrel, one side of the screw is installed at the output end position of the reducer, and the screw is driven to rotate by the reducer, the hopper is embedded and fixed at the top of the screw barrel, so as to facilitate the addition of raw materials into the screw barrel, and the heater is fixed on the outside of the screw barrel to facilitate heating it.

[0007] Preferably, there is a movable sealing contact between the screw and the rotary joint.

[0008] Preferably, the screw is a hollow structure.

[0009] Preferably, the feed section has a gradual structure, with the spiral groove going from deep to shallow, which facilitates the compression of the raw materials.

[0010] Preferably, the compression section is double-threaded, with a main edge and a secondary edge, so as to facilitate changing the rheological velocity of the raw material solution.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] When the utility model is in use, the water inlet pipe is connected to the coolant pipe, so that the coolant is injected into the screw through the water inlet pipe through the rotary joint. The coolant after cooling is discharged through the water outlet pipe, and the raw material is cooled from the inside of the screw. In this way, the whole device has the advantages of fast cooling response, small control temperature deviation, and good constant temperature stability, thereby improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of a water-cooled extruder screw of the utility model;

[0014] Figure 2 This is a three-dimensional diagram of a water-cooled extruder screw of the utility model;

[0015] Figure 3 The utility model is a schematic diagram of the screw structure of a water-cooled extruder screw.

[0016] In the figure: 1. Machine body; 2. Main motor; 3. Screw; 31. Feed section; 32. Compression section; 33. Plasticizing section; 34. Discharge section; 4. Rotary joint; 5. Water inlet pipe; 6. Water outlet pipe; 7. Reducer; 8. Screw barrel; 9. Hopper; 10. Heater; 11. Base. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-3The utility model provides a water-cooled extruder screw, including a body 1 and a screw 3, the screw 3 is installed inside the body 1, a rotary joint 4 is movably installed on one side of the screw 3, the screw 3 and the rotary joint 4 are in movable sealing contact, and the screw 3 is a hollow structure, a water outlet pipe 6 is inlaid and fixed on one side of the rotary joint 4, and a water inlet pipe 5 is inlaid and fixed on the lower end of the rotary joint 4. The screw 3 includes a feeding section 31, a compression section 32, a plasticizing section 33 and a discharging section 34. The feeding section 31 is a gradual structure, and the spiral groove is from deep to shallow, which is convenient for compressing raw materials. The compression section 32 is a double thread, with a main edge and a secondary edge, which is convenient for changing the rheological speed of the raw material solution. When in use, the water inlet pipe 5 is connected to the coolant pipe, so that the coolant is injected into the screw 3 through the water inlet pipe 5 through the rotary joint 4, and the coolant after cooling is discharged through the water outlet pipe 6, and the raw material is cooled from the inside of the screw 3. In this way, the whole device has the advantages of fast cooling response, small control temperature deviation, and good constant temperature stability, thereby improving the practicality of the device.

[0019] The body 1 includes a base 11, a main motor 2, a reducer 7, a screw barrel 8, a hopper 9 and a heater 10. A track wheel is installed at the lower end of the base 11 by bolts. The main motor 2 is fixed to the top of the base 11 by a mounting frame. The reducer 7 is fixed to the output end of the main motor 2 by a coupling. The screw barrel 8 is installed on one side of the reducer 7. The screw 3 is movably inserted into the screw barrel 8. One side of the screw 3 is installed at the output end of the reducer 7. The screw 3 is driven to rotate by the reducer 7. The hopper 9 is embedded and fixed at the top of the screw barrel 8 to facilitate adding raw materials into the screw barrel 8. The heater 10 is fixed to the outside of the screw barrel 8 by bolts to facilitate heating it.

[0020] Working principle: When in use, the water inlet pipe 5 is connected to the coolant pipe, so that the coolant is injected into the screw 3 through the water inlet pipe 5 through the rotary joint 4. After cooling, the coolant is discharged through the water outlet pipe 6, and the raw materials are cooled from the inside of the screw 3. In this way, the whole device has the advantages of fast cooling response, small control temperature deviation, and good constant temperature stability, thereby improving the practicability of the device.

[0021] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0022] 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 water-cooled extruder screw, comprising a body (1) and a screw (3), characterized in that: The screw (3) is installed inside the machine body (1); a rotary joint (4) is movably installed on one side of the screw (3); a water outlet pipe (6) is embedded and fixedly provided on one side of the rotary joint (4); a water inlet pipe (5) is embedded and fixedly provided at the lower end of the rotary joint (4); and the screw (3) comprises a feeding section (31), a compression section (32), a plasticizing section (33) and a discharging section (34).

2. A water-cooled extruder screw according to claim 1, characterized in that: The machine body (1) comprises a base (11), a main motor (2), a reducer (7), a screw barrel (8), a hopper (9) and a heater (10); a track wheel is installed at the lower end of the base (11); the main motor (2) is fixed at the top of the base (11); the reducer (7) is fixed at the output end of the main motor (2); the screw barrel (8) is installed on one side of the reducer (7); the screw (3) is movably inserted inside the screw barrel (8); one side of the screw (3) is installed at the output end of the reducer (7); the hopper (9) is embedded and fixed at the top of the screw barrel (8); and the heater (10) is fixed on the outside of the screw barrel (8).

3. A water-cooled extruder screw according to claim 2, characterized in that: There is a movable sealing contact between the screw (3) and the rotary joint (4).

4. A water-cooled extruder screw according to claim 3, characterized in that: The screw (3) is a hollow structure.

5. A water-cooled extruder screw according to claim 4, characterized in that: The feed section (31) is a gradual structure, with the spiral groove going from deep to shallow.

6. A water-cooled extruder screw according to claim 5, characterized in that: The compression section (32) is double-threaded, with a main ridge and a secondary ridge.

Images