A screw extruder for a pelletizing machine

Abstract

The present invention relates to the technical field of pelletizers, and in particular to a screw extruder for a pelletizer, comprising an extruder device, wherein the exterior of the extruder device is wrapped with a heating device, the extruder device comprising a spiral extrusion roller, the spiral extrusion roller comprising a support roller, a spiral extrusion blade fixed to the outer circumference of the support roller, a spiral cavity provided inside the spiral extrusion blade, the support roller having a liquid flow channel opened along its axial direction, the support roller having a liquid inlet and a liquid outlet connected to the liquid flow channel, a pump body and a liquid cooling box provided between the liquid inlet and the liquid outlet, the support roller having a liquid inlet hole and a liquid return hole connected to the spiral cavity, and the liquid circulates in the liquid cooling box, the liquid flow channel and the spiral cavity through the pump body. This device cools down the interior of the extruder device, and compared with external cooling methods, this device can more quickly achieve the effect of regulating the extrusion temperature.

Description

Technical Field

[0001] The present invention relates to the technical field of pelletizing machines, in particular to a screw extruder for a pelletizing machine. Background Art

[0002] The granulator is also called plastic granulator, a kind of plastic extrusion molding equipment. It heats the plastic raw material into a viscous flow state, and extrude it continuously through the extrusion die under the action of pressure. It is then cooled into a strip glass state and cut into cylindrical or elliptical plastic particles.

[0003] The extruder of the pelletizer is generally equipped with multiple sets of heating devices on the outside along the spiral extrusion direction. The plastic raw materials inside the spiral extruder are melted by the heating devices. When the extruder is working, the extrusion temperature requirement is relatively high. Generally, a heating and cooling system needs to be set up to ensure that the extrusion process is completed within the temperature range required by the process. The traditional cooling method is to set an air cooling or water cooling device on the outside of the extruder. The cooling effect of this cooling system is poor, and it is difficult to quickly cool the extrusion temperature to the process temperature. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art extruder cooling system having poor cooling effect and difficulty in quickly cooling the extrusion temperature to the process temperature, and to propose a screw extruder for a pelletizer.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A screw extruder for a pelletizer includes an extruder device, the outside of which is wrapped with a heating device, the extruder device including a spiral extrusion roller, the spiral extrusion roller including a support roller and a spiral extrusion blade fixed to the outer circumference of the support roller, a spiral cavity is provided inside the spiral extrusion blade, the support roller is provided with a liquid flow channel along its axial direction, the support roller is provided with a liquid inlet and a liquid outlet connected to the liquid flow channel, a pump body and a liquid cooling box are provided between the liquid inlet and the liquid outlet, the support roller is provided with a liquid inlet hole and a liquid return hole connected to the spiral cavity, and the liquid circulates in the liquid cooling box, the liquid flow channel and the spiral cavity through the pump body.

[0007] A plurality of spaced partitions are fixedly installed in the spiral extrusion blade, and the spiral cavity is divided into a plurality of independent spiral cavity parts by the partitions. The support roller is located in each spiral cavity part and is provided with a liquid inlet hole and a liquid return hole.

[0008] The liquid flow channel includes a liquid inlet flow channel and a liquid return flow channel located in the support roller. The liquid inlet hole of each spiral cavity is connected to the liquid inlet flow channel. The liquid inlet is located in the liquid inlet flow channel. The liquid return hole of each spiral cavity is connected to the liquid return flow channel. The liquid outlet is located in the liquid return flow channel.

[0009] The liquid inlet channel is a straight channel arranged along the axial direction of the support roller.

[0010] The liquid inlet channel has a circular or polygonal cross section along the radial direction of the support roller.

[0011] The heating zones of the extruder device are defined as the first heating zone and the second heating zone in sequence along the spiral extrusion direction. The end of the spiral extrusion roller is located in the second heating zone. A cylinder capable of moving along the axial direction of the support roller is provided in the liquid inlet channel. The outer circumference of the cylinder is sealed with the wall of the liquid inlet channel. A cavity is provided in the cylinder. Buffer zones are reserved between both ends of the cylinder and both ends of the liquid inlet channel. One end of the cylinder close to the liquid inlet is the liquid inlet end for conveying liquid to the cavity. The liquid inlet end is connected to the liquid inlet. The other end of the cylinder is connected to the end of the liquid inlet channel. A thrust spring is installed, and the cylinder is provided with a plurality of first liquid outlet holes along its axial direction for corresponding communication with the liquid inlet hole. The first heating zone and the second heating zone are both provided with a first liquid outlet hole, and the cylinder is provided with a second liquid outlet hole on the side of the first liquid outlet hole in the second heating zone close to the liquid inlet end. The pump body has a first pressure value and a second pressure value. When the pump body is at the first pressure value, the first liquid outlet hole is communicated with the liquid inlet hole under the action of the liquid pressure. When the pump body is at the second pressure value, the second liquid outlet hole is communicated with the liquid inlet hole under the action of the liquid pressure.

[0012] Each of the liquid outlets is equipped with a one-way ball valve.

[0013] The spiral extrusion blade includes a spiral groove plate and a spiral sealing plate spirally arranged on the outer circumference of the support roller. The spiral groove plate and the outer circumference of the support roller form a spiral groove. The spiral sealing plate seals the spiral groove. The spiral groove plate, the spiral sealing plate and the outer circumference of the support roller are arranged around the spiral cavity.

[0014] The outer circumference of the support roller is rotatably connected to a liquid inlet housing and a liquid return housing. The liquid inlet is located in the liquid inlet housing, and the liquid inlet housing is provided with a liquid inlet interface connected to the liquid outlet end of the pump body. The liquid outlet is located in the liquid return housing, and the liquid return housing is provided with a liquid outlet interface connected to the liquid cooling tank.

[0015] The present invention proposes a screw extruder for a pelletizer, which has the following beneficial effects: the spiral extrusion blades of the device are arranged as a cavity structure, and the liquid in the liquid cooling box is transported to the spiral cavity through the liquid inlet hole by the pump body. The liquid flows in the spiral cavity to achieve the effect of cooling the interior of the extruder device. The liquid finally flows back to the liquid cooling box through the return hole and the liquid outlet. The hot liquid is cooled in the liquid cooling box, and the interior of the extruder device is quickly cooled through multiple reflux effects. The device cools from the inside of the extruder device. Compared with the external cooling method, the device can achieve the effect of regulating the extrusion temperature more quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 Schematic diagram of the three-dimensional structure of the spiral cavity of the present invention;

[0018] Figure 3 It is a schematic diagram of the cross-section structure of the present invention;

[0019] Figure 4 This is a schematic diagram of the first pressure value state structure of the present invention;

[0020] Figure 5 This is a schematic diagram of the second pressure value state structure of the present invention;

[0021] Figure 6 This is a schematic diagram of the third pressure value state structure of the present invention.

[0022] In the figure: support roller 1, liquid inlet 2, spiral sealing plate 3, spiral groove plate 4, spiral extrusion blade 5, liquid outlet 6, spiral cavity 7, liquid inlet hole 8, liquid return hole 9, spiral cavity 10, liquid inlet channel 11, liquid return channel 12, liquid inlet shell 13, liquid return shell 14, liquid inlet interface 15, liquid outlet interface 16, liquid inlet end 17, cylinder 18, first liquid outlet hole 19, second liquid outlet hole 20, third liquid outlet hole 21, cavity 22, thrust spring 23, partition 24, first heating zone 25, second heating zone 26, third heating zone 27. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Reference Figure 1-6A screw extruder for a pelletizer includes an extruder device, the outside of the extruder device is wrapped with a heating device, and the raw materials in the extruder device are melted by the heating device. The extruder device includes a spiral extrusion roller, the spiral extrusion roller includes a support roller 1, and a spiral extrusion blade 5 fixed to the outer circumference of the support roller 1. A spiral cavity 10 is provided inside the spiral extrusion blade 5, and the support roller 1 is provided with a liquid flow channel along its axial direction. The support roller 1 is provided with a liquid inlet 2 and a liquid outlet 6 connected to the liquid flow channel, and a pump body and a liquid cooling box are provided between the liquid inlet 2 and the liquid outlet 6. The support roller 1 is provided with a liquid inlet hole 8 and a liquid return hole 9 connected to the spiral cavity 10. The liquid circulates in the liquid cooling box, the liquid flow channel and the spiral cavity 10 through the pump body.

[0025] The spiral extrusion blade 5 of the present device is set as a cavity structure. The liquid in the liquid cooling box is transported to the spiral cavity 10 through the liquid inlet hole 8 by the pump body. The liquid flows in the spiral cavity 10 to achieve the effect of cooling the interior of the extruder device. The liquid finally flows back to the liquid cooling box through the return hole 9 and the liquid outlet 6. The hot liquid cools the liquid cooling box and achieves the effect of rapid cooling of the interior of the extruder device through multiple reflux effects. The present device cools from the inside of the extruder device. Compared with the external cooling method, the present device can achieve the effect of regulating the extrusion temperature more quickly.

[0026] refer to Figure 2 , a number of spaced-apart partitions 24 are fixedly installed in the spiral extrusion blade 5, and the spiral cavity 10 is divided into a number of independent spiral cavity parts 7 by the partitions 24. The support roller 1 is located in each spiral cavity part 7 and is provided with a liquid inlet hole 8 and a liquid return hole 9, which divides the spiral cavity 10 into a number of independent spiral cavity parts 7. Each spiral cavity part 7 is provided with a liquid inlet hole 8 and a liquid return hole 9, and a multi-stage cooling method is set up, so that the liquid does not need to flow through the entire spiral cavity 10 before flowing out. If the liquid flows through the entire spiral cavity 10 and then flows out, the temperature of the liquid at the end will be very different from the temperature of the liquid at the front end, and the cooling effect at the rear end will not be obvious, resulting in a poor cooling effect of the extrusion temperature, affecting the temperature control effect. With segmented cooling, each part of the liquid only needs to pass through an independent spiral cavity part 7 with a shorter process before flowing out. The temperature difference between the front and rear ends of the independent spiral cavity part 7 is small. Compared with the integral cooling, the segmented cooling effect is better and more obvious.

[0027] The liquid flow channel includes a liquid inlet flow channel 11 and a liquid return flow channel 12 located in the support roller 1. The liquid inlet flow channel 11 and the liquid return flow channel 12 are separately arranged. The liquid inlet hole 8 of each spiral cavity 7 is connected to the liquid inlet flow channel 11. The liquid inlet 2 is located in the liquid inlet flow channel 11. The liquid return hole 9 of each spiral cavity 7 is connected to the liquid return flow channel 12. The liquid outlet 6 is located in the liquid return flow channel 12. Liquid is transported to each spiral cavity 7 through the liquid inlet flow channel 11, and then the liquid in all the spiral cavities 7 is uniformly returned to the liquid return flow channel 12.

[0028] As an embodiment, the liquid inlet channel 11 is a straight channel arranged along the axial direction of the support roller 1 .

[0029] As an embodiment, the liquid inlet channel 11 has a circular or polygonal cross section along the radial direction of the support roller 1 .

[0030] refer to Figure 4 As an embodiment, the heating zones of the extruder device are defined as a first heating zone 25 and a second heating zone 26 in sequence along the spiral extrusion direction. The end of the spiral extrusion roller is located in the second heating zone 26. A cylinder 18 capable of moving axially along the support roller 1 is provided in the liquid inlet channel 11. The cylinder 18 has a cavity 22. Buffer zones are reserved between both ends of the cylinder 18 and both ends of the liquid inlet channel 11. One buffer zone is used for liquid inlet and the other buffer zone is used for placing a thrust spring. The outer circumference of the cylinder 18 is The cylinder 18 is sealed with the wall of the liquid inlet channel 11 to prevent the liquid from entering the buffer zone where the thrust spring is placed. The end of the cylinder 18 close to the liquid inlet 2 is the liquid inlet end 17 for conveying liquid to the cavity 22. The liquid enters the cavity 22 through the liquid inlet end 17. The liquid inlet end 17 is connected to the liquid inlet 2. A thrust spring 23 is installed between the other end of the cylinder 18 and the end of the liquid inlet channel 11. The cylinder 18 is provided with a plurality of first liquid outlet holes 19 for corresponding communication with the liquid inlet hole 8, a first heating zone 25, The second heating zone 26 is provided with a first liquid outlet 19, and the cylinder 18 is provided with a second liquid outlet 20 on the side of the first liquid outlet 19 located in the second heating zone 26 near the liquid inlet end 17. The pump body has a first pressure value and a second pressure value. When there is no water pressure, the liquid inlet holes 8 are all in a state of being closed by the cylinder 18. The pressure value of the pump body can control the output power of the pump body by controlling the size of the input current or voltage. The pressures generated by pump bodies of different powers are different. When the pump body is at the first pressure value, a water pressure will be generated under the action of the water pressure, pushing the cylinder 18 to compress the thrust spring, causing the cylinder to move in the direction of the thrust spring. Under the action of the liquid pressure, the first liquid outlet 19 is connected to the liquid inlet hole 8. The liquid enters the spiral cavity 7 through the first liquid outlet 19 and the liquid inlet hole 8. After flowing through the spiral cavity 7, it flows out from the return liquid hole 9 into the return liquid channel 12, and finally flows back to the liquid cooling tank through the liquid outlet 6. When the pump body is at the second pressure value, the second liquid outlet 20 is connected to the liquid inlet hole 8 under the action of the liquid pressure. Through this setting, cooling of different positions of the spiral extrusion roller can be achieved. For example, at the first pressure value, the spiral extrusion rollers in the first heating zone 25 and the second heating zone 26 can be in a circulating cooling state. At the second pressure value, only the spiral extrusion roller in the second heating zone 26 can be in a circulating cooling state, thereby achieving the purpose of segmented controlled cooling.

[0031] As another embodiment, the heating zones of the extruder device are defined as a first heating zone 25, a second heating zone 26, and a third heating zone 27 in sequence along the spiral extrusion direction. The end of the spiral extrusion roller is located in the third heating zone 27. A cylinder 18 capable of axially moving along the support roller 1 is provided in the liquid inlet channel 11. The outer circumference of the cylinder 18 is sealed with the wall of the liquid inlet channel 11. A cavity 22 is provided in the cylinder 18. Buffer zones are reserved between both ends of the cylinder 18 and both ends of the liquid inlet channel 11. One end of the cylinder 18 close to the liquid inlet 2 is a liquid inlet end 17 for conveying liquid to the cavity 22. The liquid inlet end 17 is connected to the liquid inlet 2. A thrust spring 23 is installed between the other end of the cylinder 18 and the end of the liquid inlet channel 11. The cylinder 18 is provided with a plurality of first liquid outlet holes 1 corresponding to the liquid inlet hole 8 along its axial direction. 9. The first heating zone 25, the second heating zone 26 and the third heating zone 27 are all provided with a first liquid outlet 19, and the second heating zone 26 and the third heating zone 27 are all provided with a second liquid outlet 20. The cylinder 18 is located in the second heating zone 26 and is provided with a second liquid outlet 20 on the side of the first liquid outlet 19 close to the liquid inlet end 17. The cylinder 18 is located in the third heating zone 27 and is provided with a third liquid outlet 21 on the side of the second liquid outlet 20 close to the liquid inlet end 17. The pump body has a first pressure value, a second pressure value and a third pressure value. When the pump body is at the first pressure value, the first liquid outlet 19 is connected to the liquid inlet hole 8 under the action of the liquid pressure. When the pump body is at the second pressure value, the second liquid outlet 20 is connected to the liquid inlet hole 8 under the action of the liquid pressure. When the pump body is at the third pressure value, the third liquid outlet 21 is connected to the liquid inlet hole 8 under the action of the liquid pressure.

[0032] In this embodiment, at the first pressure value, the spiral extrusion rollers of the first heating zone 25, the second heating zone 26, and the third heating zone 27 are all in a circulating cooling state; at the second pressure value, the spiral extrusion rollers of the second heating zone 26 and the third heating zone 27 are all in a circulating cooling state; at the third pressure value, the spiral extrusion roller of the third heating zone 27 is in a circulating cooling state.

[0033] A one-way ball valve is installed at each liquid outlet 6, so that a certain water pressure is generated in the spiral cavity, which facilitates the liquid to fill the entire spiral cavity.

[0034] As a setting method of the spiral extrusion blade 5, the spiral extrusion blade 5 includes a spiral groove plate 4 and a spiral sealing plate 3 which are coiled on the outer circumference of the support roller 1. The spiral groove plate 4 and the outer circumference of the support roller 1 form a spiral groove, and the spiral sealing plate 3 seals the spiral groove. The spiral groove plate 4, the spiral sealing plate 3 and the outer circumference of the support roller 1 form a spiral cavity 10. The split assembly is adopted to facilitate the molding of the spiral extrusion blade 5.

[0035] In order to facilitate the liquid to enter and exit the rotating support roller, the outer circumference of the support roller 1 is rotatably connected to a liquid inlet shell 13 and a liquid return shell 14. The liquid inlet 2 is located in the liquid inlet shell 13. The liquid inlet shell 13 is provided with a liquid inlet interface 15 connected to the liquid outlet end of the pump body. The liquid outlet 6 is located in the liquid return shell 14. The liquid return shell 14 is provided with a liquid outlet interface 16 connected to the liquid cooling box.

[0036] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technical solution, conception, and design obtained by equivalent replacement or modification of the technical solution and inventive concept of the present invention by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. A screw extruder for a pelletizer, comprising an extruder device, wherein the extruder device is externally wrapped with a heating device, the extruder device comprises a spiral extrusion roller, the spiral extrusion roller comprises a support roller (1), and a spiral extrusion blade (5) fixed to the outer circumference of the support roller (1), characterized in that: A spiral cavity (10) is provided inside the spiral extrusion blade (5), a liquid flow channel is provided on the support roller (1) along its axial direction, a liquid inlet (2) and a liquid outlet (6) are provided on the support roller (1) and are communicated with the liquid flow channel, a pump body and a liquid cooling box are provided between the liquid inlet (2) and the liquid outlet (6), and a liquid inlet hole (8) and a liquid return hole (9) are provided on the support roller (1) and are communicated with the spiral cavity (10), so that the liquid circulates in the liquid cooling box, the liquid flow channel and the spiral cavity (10) through the pump body; A plurality of spaced-apart partitions (24) are fixedly installed in the spiral extrusion blade (5), and the spiral cavity (10) is divided into a plurality of independent spiral cavity sections (7) by the partitions (24). The support roller (1) is located in each spiral cavity section (7) and is provided with a liquid inlet hole (8) and a liquid return hole (9); The liquid flow channel comprises a liquid inlet flow channel (11) and a liquid return flow channel (12) located in the support roller (1); the liquid inlet hole (8) of each spiral cavity (7) is connected to the liquid inlet flow channel (11); the liquid inlet (2) is located in the liquid inlet flow channel (11); the liquid return hole (9) of each spiral cavity (7) is connected to the liquid return flow channel (12); and the liquid outlet (6) is located in the liquid return flow channel (12); The liquid inlet channel (11) is a straight channel arranged along the axial direction of the support roller (1); The heating zones of the extruder device are defined as a first heating zone (25) and a second heating zone (26) in sequence along the spiral extrusion direction. The end of the spiral extrusion roller is located in the second heating zone (26). A barrel (18) capable of moving along the axial direction of the support roller (1) is provided in the liquid inlet channel (11). The outer circumference of the barrel (18) is sealed with the wall of the liquid inlet channel (11). A cavity (22) is provided in the barrel (18). Buffer zones are reserved between the two ends of the barrel (18) and the two ends of the liquid inlet channel (11). One end of the barrel (18) close to the liquid inlet (2) is a liquid inlet end (17) for conveying liquid to the cavity (22). The liquid inlet end (17) is communicated with the liquid inlet (2). The other end of the barrel (18) is connected to the liquid inlet channel ( 11), a thrust spring (23) is installed between the ends of the cylinder (18), a plurality of first liquid outlet holes (19) for corresponding communication with the liquid inlet hole (8) are opened along the axial direction thereof, the first heating zone (25) and the second heating zone (26) are both provided with a first liquid outlet hole (19), the cylinder (18) is provided with a second liquid outlet hole (20) on the side of the first liquid outlet hole (19) located in the second heating zone (26) close to the liquid inlet end (17), the pump body has a first pressure value and a second pressure value, when the pump body is at the first pressure value, the first liquid outlet hole (19) is communicated with the liquid inlet hole (8) under the action of the liquid pressure, and when the pump body is at the second pressure value, the second liquid outlet hole (20) is communicated with the liquid inlet hole (8) under the action of the liquid pressure; Alternatively, the heating zones of the extruder device are defined as a first heating zone (25), a second heating zone (26), and a third heating zone (27) in sequence along the spiral extrusion direction, the end of the spiral extrusion roller is located in the third heating zone (27), the liquid inlet channel (11) is provided with a barrel (18) capable of moving along the axial direction of the support roller (1), the outer circumference of the barrel (18) is sealed with the wall of the liquid inlet channel (11), the barrel (18) has a cavity (22), and both ends of the barrel (18) are provided with a plurality of A buffer zone is reserved between both ends of the liquid inlet channel (11); one end of the cylinder (18) close to the liquid inlet (2) is a liquid inlet end (17) for conveying liquid to the cavity (22); the liquid inlet end (17) is communicated with the liquid inlet (2); a thrust spring (23) is installed between the other end of the cylinder (18) and the end of the liquid inlet channel (11); the cylinder (18) is provided with a plurality of first liquid outlet holes (19) for corresponding communication with the liquid inlet hole (8) along its axial direction; the first liquid outlet holes (19) are connected to the liquid inlet hole (8) and ...2) and the first liquid outlet holes (19) are connected to the liquid inlet hole (8) and the first liquid outlet holes (19) are connected to the liquid inlet hole (2) and the first liquid outlet holes (19) are connected to the liquid inlet hole (8) and the first liquid outlet holes (19) are connected to the liquid inlet hole (2) and the first liquid outlet holes (19) The hot zone (25), the second heating zone (26), and the third heating zone (27) are all provided with a first liquid outlet (19); the second heating zone (26) and the third heating zone (27) are all provided with a second liquid outlet (20); the cylinder (18) is located on a side of the first liquid outlet (19) of the second heating zone (26) close to the liquid inlet end (17) and is provided with the second liquid outlet (20); the cylinder (18) is located on a side of the second liquid outlet (20) of the third heating zone (27) close to the liquid inlet end (17) A third liquid outlet (21) is provided on one side of the pump body, and the pump body has a first pressure value, a second pressure value, and a third pressure value. When the pump body is at the first pressure value, the first liquid outlet (19) is connected to the liquid inlet (8) under the action of liquid pressure. When the pump body is at the second pressure value, the second liquid outlet (20) is connected to the liquid inlet (8) under the action of liquid pressure. When the pump body is at the third pressure value, the third liquid outlet (21) is connected to the liquid inlet (8) under the action of liquid pressure.

2. A screw extruder for a pelletizer according to claim 1, characterized in that, The liquid inlet channel (11) has a circular or polygonal cross-section along the radial direction of the support roller (1).

3. A screw extruder for a pelletizer according to claim 1, characterized in that, Each of the liquid outlets (6) is equipped with a one-way ball valve.

4. A screw extruder for a pelletizer according to any one of claims 1 to 3, characterized in that: The spiral extrusion blade (5) comprises a spiral groove plate (4) and a spiral sealing plate (3) spirally wound around the outer circumference of the support roller (1); the spiral groove plate (4) and the outer circumference of the support roller (1) form a spiral groove; the spiral sealing plate (3) seals the spiral groove; and the spiral groove plate (4), the spiral sealing plate (3) and the outer circumference of the support roller (1) form the spiral cavity (10).

5. A screw extruder for a pelletizer according to any one of claims 1 to 3, characterized in that: The outer circumference of the support roller (1) is rotatably connected to a liquid inlet housing (13) and a liquid return housing (14); the liquid inlet (2) is located in the liquid inlet housing (13); the liquid inlet housing (13) is provided with a liquid inlet interface (15) connected to a liquid outlet end of a pump body; the liquid outlet (6) is located in the liquid return housing (14); the liquid return housing (14) is provided with a liquid outlet interface (16) connected to a liquid cooling tank.

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