Cooling device for extruder head

Abstract

The utility model relates to the technical field of injection molding, in particular to a cooling device for an extruder head, which comprises a heat collecting device coated on the extruder head and a heat radiating device communicated with the heat collecting device, and a communicating pipe is arranged between the heat collecting device and the heat radiating device. The heat collection device comprises a heat conduction wrapping pipe wrapping the extruder head and a heat absorption pipe embedded in and wound around the outer wall of the heat conduction wrapping pipe, the heat absorption pipe is filled with cooling oil, and the two ends of the heat absorption pipe are communicated with the heat dissipation device through communicating pipes. The heat dissipation device comprises a heat dissipation pipe and a pump machine, the two ends of the heat dissipation pipe are communicated with the heat absorption pipe through communicating pipes, the pump machine is arranged at one end of the heat dissipation pipe, and the pump machine provides cooling oil flowing power, so that heat in the heat absorption pipe is brought into the heat dissipation pipe by the cooling oil to be dissipated and then circularly enters the heat absorption pipe for repeated heat absorption and dissipation.

Description

Technical Field

[0001] The utility model relates to the technical field of extruders, in particular to an extruder head cooling device. Background Art

[0002] Extruder is a type of plastic machinery. It 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. When producing powder coatings, it is necessary to use an extruder to mix various raw materials and then extrude them, and obtain the finished powder coating after crushing. During the operation of the extruder, it is necessary to maintain the fluidity of the plastic raw materials inside it, and then heat it to keep it within a certain temperature range. Due to the internal friction and electrothermal effect, the temperature of the extruder head will rise rapidly, and a cooling device is needed to ensure the normal operation of the machine.

[0003] The existing cooling device sets a water pipe at the position of the extruder head and makes the water pipe contact with the extruder head over a large area. Then, circulating cold water is poured into the water pipe to take away the heat of the extruder head through the cold water, thereby keeping the extruder head within a certain temperature range and preventing overheating from affecting the normal extrusion work of the extruder head.

[0004] Although the above-mentioned existing technology can solve the corresponding technical problems, it still has certain defects: the existing cooling device directly takes away heat through cold water, and has high requirements on water quality. It is necessary to use purified water with low mineral content. Otherwise, after a period of use, it is easy to cause scale to condense in the circulating water pipe, so that the inner diameter of the circulating water pipe is reduced by scale, thereby causing the water flow rate to be greatly reduced, thereby worsening the cooling effect on the extruder head, requiring frequent maintenance and replacement, and being more cumbersome to use. Utility Model Content

[0005] The purpose of the utility model is to provide an extruder head cooling device which is not easy to be blocked and has a long maintenance cycle in view of the defects and shortcomings of the prior art.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an extruder head cooling device, comprising a heat collecting device coated on the extruder head and a heat dissipation device connected to the heat collecting device, a connecting pipe is provided between the heat collecting device and the heat dissipation device, the heat collecting device comprises a heat-conducting coating tube coated on the extruder head and a heat-absorbing tube embedded in and wound around the outer wall of the heat-coating tube, the heat-absorbing tube is filled with cooling oil, and both ends of the heat-absorbing tube are connected to the heat dissipation device through the connecting pipe, the heat dissipation device comprises a heat dissipation tube whose both ends are connected to the heat-absorbing tube through the connecting pipe and a pump arranged at one end of the heat dissipation tube, the pump provides cooling oil flow power, so that the cooling oil brings the heat in the heat-absorbing tube into the heat dissipation tube for dissipation and then circulates into the heat-absorbing tube for repeated heat absorption and dissipation.

[0007] A further improvement is that the heat dissipation pipe is a copper coil structure.

[0008] A further improvement is that: the heat dissipation device further includes a heat dissipation pool, the heat dissipation pipe penetrates the heat dissipation pool and the middle section is placed in the heat dissipation pool.

[0009] A further improvement is that the heat dissipation pool is filled with cooling water.

[0010] A further improvement is that a cooling water interface is provided on the side wall of the heat dissipation pool.

[0011] A further improvement is that the outer wall of the heat absorbing tube is further provided with an air cooling tube connected to the heat absorbing tube.

[0012] A further improvement is that a plurality of aluminum fins are embedded in the outer wall of the air cooling tube.

[0013] After adopting the above technical solution, the beneficial effect of the utility model is as follows: the utility model fills cooling oil in the heat absorption tube, the connecting tube and the heat dissipation tube, and then uses the cooling oil to take away the heat generated by the extruder head and dissipate it in conjunction with the heat dissipation tube immersed in cooling water, thereby avoiding the formation of scale adhesion in the heat dissipation tube, the heat absorption tube and the connecting tube, effectively reducing the probability of pipeline blockage, and greatly extending the maintenance and inspection cycle, making it simpler and more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0015] Figure 1 It is a structural schematic diagram of a front cross section of the cooling device of the present invention. DETAILED DESCRIPTION

[0016] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0017] See Figure 1 As shown, the technical solution adopted in this specific embodiment is: an extruder head cooling device, including a heat collecting device coated on the extruder head and a heat dissipation device connected to the heat collecting device, a connecting pipe 3 is provided between the heat collecting device and the heat dissipation device, the heat collecting device includes a heat conductive coating tube 1 coated on the extruder head and a heat absorption tube 2 embedded in and wound around the outer wall of the heat coating tube 1, the heat absorption tube 2 is filled with cooling oil, and both ends of the heat absorption tube 2 are connected to the heat dissipation device through the connecting pipe 3, and the heat dissipation device includes a heat dissipation pipe 7 connected to the heat absorption tube 2 through the connecting pipe 3 at both ends, and a pump 4 arranged at one end of the heat dissipation pipe 7, the pump 4 provides cooling oil flow power, so that the cooling oil brings the heat in the heat absorption tube 2 into the heat dissipation tube 7 for dissipation, and then circulates into the heat absorption tube 2 for repeated heat absorption and dissipation. When in use, the heat conductive coating tube 1 is coated on the outside of the extruder head so that it fits the outer surface of the extruder head. The heat-conducting cladding tube 1 can be made of copper material, which has good heat conduction efficiency, and can effectively absorb the heat generated by the extruder head and output it to the heat-absorbing tube 2. The heat-absorbing tube 2 can be a copper coil and is wound around the outside of the heat-conducting cladding tube 1, so as to absorb and conduct heat to the cooling oil filled inside it. At the same time, it cooperates with the pump 4 to generate power, so that the cooling oil circulates along the heat-absorbing tube 2, the connecting tube 3 and the heat dissipation tube 7. The heat dissipation tube 7 can also be made of copper material. The heat in the cooling oil is dissipated to the air through the heat dissipation tube 7, thereby making the cooling oil become room temperature in the heat dissipation tube 7, and with the action of the pump 4, it flows back to the heat-absorbing tube 2 for repeated heat absorption. Since the pipeline is filled with cooling oil, scale adhesion in the heat dissipation tube 7, the heat-absorbing tube 2 and the connecting tube 3 is avoided, the probability of pipeline blockage is effectively reduced, and the maintenance cycle is greatly extended, making it simpler and more convenient to use.

[0018] The heat dissipation pipe 7 is a copper coil structure, which is conducive to expanding the heat dissipation area of ​​the heat dissipation pipe 7 and, at the same time, with the high thermal conductivity of copper material, better dissipating the heat of the incoming cooling oil;

[0019] The heat dissipation device further includes a heat dissipation pool 6. The heat dissipation pipe 7 penetrates the heat dissipation pool 6 and the middle section is placed in the heat dissipation pool 6, which is conducive to accommodating the heat dissipation medium through the heat dissipation pool 6, thereby enabling the heat dissipation pipe 7 to more efficiently conduct heat dissipation.

[0020] The heat sink 6 is filled with cooling water, which is conducive to quickly absorbing heat through the cooling water and accelerating the heat dissipation speed of the heat pipe 7;

[0021] The side wall of the heat sink 6 is provided with a cooling water interface 8, which is conducive to connecting the cooling water pipe from the external pipeline, thereby circulating the cooling water pipe, keeping the cooling water in the heat sink 6 at a low temperature, ensuring the heat absorption capacity of the cooling water, thereby making the heat dissipation efficiency of the heat pipe 7 higher;

[0022] The outer wall of the heat absorption tube 2 is also provided with an air cooling tube 9 connected to the heat absorption tube 2, which is conducive to allowing the cooling oil in the heat absorption tube 2 to partially enter the air cooling tube 9, thereby expanding the contact area with the air and diffusing part of the heat into the air;

[0023] The outer wall of the air cooling tube 9 is embedded with a plurality of aluminum fins 91, which is beneficial to expanding the contact area between the air cooling tube 9 and the air, and combined with the high thermal conductivity of aluminum metal, improving the performance of diffusing heat into the air.

[0024] The working principle of the utility model: When the utility model is used, the heat-conducting cladding tube 1 is wrapped around the outside of the extruder head so that it fits the outer surface of the extruder head. The heat-conducting cladding tube 1 can be made of copper material, which has good heat conduction efficiency, and can effectively absorb the heat generated by the extruder head and output it to the heat-absorbing tube 2. The heat-absorbing tube 2 can be a copper coil and is wound around the outside of the heat-conducting cladding tube 1, so that the heat can be absorbed and conducted to the cooling oil filled inside it, and at the same time cooperate with the pump 4 to generate power, thereby making the cooling The oil circulates along the heat absorption tube 2, the connecting tube 3 and the heat dissipation tube 7. The heat dissipation tube 7 can also be made of copper material. The heat in the cooling oil is dissipated to the air through the heat dissipation tube 7, so that the cooling oil becomes room temperature in the heat dissipation tube 7 and flows back to the heat absorption tube 2 with the action of the pump 4 to repeatedly absorb heat. Since the pipeline is filled with cooling oil, scale adhesion in the heat dissipation tube 7, the heat absorption tube 2 and the connecting tube 3 is avoided, the probability of pipeline blockage is effectively reduced, and the maintenance cycle is greatly extended, making it simpler and more convenient to use.

[0025] This utility model protects the product's structure; the component models are not the subject of this utility model's protection and are generally known technology. Any commercially available component that can achieve the aforementioned functions of this utility model can be used as an alternative. Therefore, component models and other parameters are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of the components.

[0026] The above shows and describes 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 above embodiments and descriptions are only for illustrative purposes. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements shall fall within the scope of the present invention as claimed. The scope of protection claimed in the present invention shall be defined by the appended claims and their equivalents. Any details not described in the present invention are well known to those skilled in the art.

Claims

1. An extruder head cooling device, comprising a heat collecting device wrapped around the extruder head and a heat dissipation device interconnected with the heat collecting device, wherein a connecting pipe (3) is provided between the heat collecting device and the heat dissipation device, characterized in that: The heat collecting device comprises a heat-conducting cladding tube (1) clad on an extruder head and a heat-absorbing tube (2) embedded in and wound around the outer wall of the heat-absorbing tube (1); the heat-absorbing tube (2) is filled with cooling oil; both ends of the heat-absorbing tube (2) are connected to the heat-dissipating device via a connecting tube (3); the heat-dissipating device comprises a heat-dissipating tube (7) whose both ends are connected to the heat-absorbing tube (2) via the connecting tube (3); and a pump (4) arranged at one end of the heat-dissipating tube (7); the pump (4) provides cooling oil flow power, so that the cooling oil brings heat in the heat-absorbing tube (2) into the heat-dissipating tube (7) for dissipation, and then circulates into the heat-absorbing tube (2) for repeated heat absorption and dissipation.

2. The extruder head cooling device according to claim 1, characterized in that: The heat dissipation pipe (7) is a copper coil structure.

3. An extruder head cooling device according to claim 1 or 2, characterized in that: The heat dissipation device further comprises a heat dissipation pool (6), the heat dissipation pipe (7) penetrates the heat dissipation pool (6) and the middle section is placed in the heat dissipation pool (6).

4. The extruder head cooling device according to claim 3, characterized in that: The heat dissipation pool (6) is filled with cooling water.

5. The extruder head cooling device according to claim 3, characterized in that: A cooling water interface (8) is provided on the side wall of the heat dissipation pool (6).

6. The extruder head cooling device according to claim 1, characterized in that: The outer wall of the heat absorbing tube (2) is further provided with an air cooling tube (9) which is in communication with the heat absorbing tube (2).

7. The extruder head cooling device according to claim 6, characterized in that: A plurality of aluminum fins (91) are embedded in the outer wall of the air cooling tube (9).

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