Opposite flow cooling device and polymer plastic granulator

Abstract

The invention relates to the technical field of plastic granulation, in particular to an opposite flow cooling device and a polymer plastic granulator. The opposite flow cooling device comprises a water cooling tank, a cooling device and a cooling device, wherein a bearing structure is arranged in the water cooling tank in the length direction of the water cooling tank; the control assembly is used for being connected with the water cooling tank and the bearing structure, a liquid level sensor is arranged at the top of the control assembly, and the liquid level sensor can adjust the control assembly to act according to the real-time water level in the water cooling tank so that the bearing structure can be located at the half position of the water level; the circulating assembly is arranged on the water cooling tank, two sets of sleeving pipes are arranged on the circulating assembly, and the cooling liquid entering the circulating assembly can be sprayed out through the sleeving pipes; and the traction structure is used for connecting the control assembly and the sleeving pipe, and the traction structure can change the spraying angle of the cooling liquid when the control assembly acts, so that the cooling effect is improved. The macromolecular plastic granulator comprises the opposite flow cooling device, a hot melt extrusion device and a granulating device.

Description

Technical Field

[0001] The invention relates to the technical field of plastic granulation, in particular to a counter-flow cooling device and a polymer plastic granulator. Background Art

[0002] Plastic pelletizer is a kind of equipment specially used for recycling waste plastics. It can efficiently melt, cool, shred and recycle waste plastics.

[0003] Specifically, the plastic pelletizer melts the waste plastic and extrude it into strips, cuts it with a coolant, and then granulates it. It is then processed into recycled materials through washing, screening, drying and other steps. These recycled materials can be used to make new plastic products or recycled plastic products.

[0004] In the above steps, the cooling effect is crucial. Poor cooling effect may lead to granulation failure. For the existing cooling device after extrusion molding, it is mainly composed of a water cooling tank. The extruded strip plastic is passed into the coolant in the water cooling tank to achieve cooling. In this process, the liquid level in the cooling tank will change as the cooling progresses, resulting in different amounts of coolant in the upper and lower parts of the strip plastic. At this time, the coolant on the side of the strip plastic with less coolant is more likely to heat up due to heat exchange, reducing the cooling effect on that side of the strip plastic, resulting in insufficient hardness on one side of the strip plastic, causing particles to stick together during granulation. Summary of the invention

[0005] The object of the present invention is to provide a counter-flow cooling device and a polymer plastic pelletizer to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A counter-flow cooling device, comprising:

[0008] A water cooling tank, wherein a supporting structure is arranged in the water cooling tank along its length direction;

[0009] A control component connected to the water cooling tank and the supporting structure, wherein a liquid level sensor is disposed on the top of the control component, and the liquid level sensor can adjust the operation of the control component according to the real-time water level in the water cooling tank so that the supporting structure is at a half position of the water level;

[0010] A circulation component is arranged on the water cooling tank, and two sets of sleeve pipes are arranged on the circulation component, and the coolant entering the circulation component can be sprayed out through the sleeve pipes;

[0011] The traction structure is connected to the control component and the sleeve pipe, and the traction structure can change the angle of the coolant spraying when the control component is in action.

[0012] As a further solution of the present invention: the supporting structure comprises two groups of brackets arranged along the length direction of the water cooling tank, and the two groups of brackets are equidistant and rotatably mounted with multiple groups of supporting rollers;

[0013] The supporting structure also includes a retaining kit connecting the bracket and the water cooling tank, and the retaining kit can keep the bracket in a horizontal state.

[0014] As a further solution of the present invention: the retaining kit comprises a first guide member fixedly mounted on the water cooling tank, a sliding member is slidably mounted on the first guide member, and a plurality of sets of groove wheels are rotatably mounted on one end of the sliding member away from the first guide member;

[0015] The retaining kit further comprises a retardation groove arranged along the length direction of the bracket, and the groove wheel can roll in the retardation groove.

[0016] As a further solution of the present invention: the control assembly comprises a first traction rod and a second traction rod symmetrically rotatably mounted at one end of the bracket, and the rotating shafts of the first traction rod and the second traction rod are connected via a meshing gear set;

[0017] One end of the first traction rod away from the bracket is connected to the bottom of the water cooling tank;

[0018] The control assembly also includes a second guide member fixedly mounted on the side wall of the water cooling tank, an electric telescopic rod fixedly mounted on the second guide member, the electric telescopic rod is connected to a sliding connector slidably mounted on the second guide member, the sliding connector is connected to an end of the second traction rod away from the bracket, and the sliding connector is fixedly connected to the liquid level sensor.

[0019] As a further solution of the present invention: the circulation assembly includes a return pump device fixedly mounted on the water cooling tank, the liquid inlet of the return pump device is connected to a return pipe, the liquid outlet is connected to a water supply pipe, the return pipe is communicated with the bottom of the water cooling tank, the water supply pipe is arranged inside the water cooling tank, and a plurality of groups of through holes are equidistantly arranged on the water supply pipe;

[0020] The sleeve pipe is slidably sleeved on the water delivery pipe.

[0021] As a further solution of the present invention: the sleeve pipe is provided with a water outlet groove along its length direction, and the water outlet groove forms a tightening position and a spraying position along the flow direction of the coolant, and the coolant can be pressurized when passing through the tightening position.

[0022] As a further solution of the present invention: the traction structure comprises a connecting rod fixedly connected to the sleeve pipe, and an engaging shaft is provided at one end of the connecting rod away from the sleeve pipe;

[0023] The traction structure also includes a follower frame fixedly connected to the sliding connection member, and the follower frame is provided with a transverse groove along its length direction, and the embedded shaft can slide in the transverse groove.

[0024] A polymer plastic pelletizer, comprising the counter-flow cooling device, and further comprising: a hot melt extrusion device and a pelletizing device;

[0025] The hot melt extrusion device is formed with a discharge port, an extrusion plate is slidably mounted on the discharge port, and the extrusion plate is provided with a plurality of groups of extrusion holes along its length direction;

[0026] The discharge port is also provided with an elastic support component, and the elastic support component cooperates with a limiting portion provided on the side of the extrusion plate to enable one group of the extrusion holes to coincide with the discharge port;

[0027] The extrusion plate is provided with a plurality of identification points adapted to the extrusion holes, the identification points are adapted to the identification device provided on the discharge port, and the identification device is electrically connected to the return pump device.

[0028] As a further solution of the present invention: the elastic support assembly comprises a horizontal plate fixedly mounted on the hot melt extrusion device, the horizontal plate is provided with a slide groove along its length direction, a slider is slidably mounted in the slide groove, and a locking wheel is rotatably mounted on the slider;

[0029] The elastic support assembly also includes a transverse axis arranged in the slide groove, the transverse axis is slidably connected to the slider, and a columnar spring is sleeved on the transverse axis, one end of the columnar spring is connected to the slider, and the other end is connected to the side wall of the slide groove.

[0030] As a further solution of the present invention: the limiting portion includes a plurality of groups of locking grooves equidistantly arranged along the length direction of the extrusion plate, the locking grooves are adapted to the locking wheels, and two adjacent groups of the locking grooves are connected by two symmetrical groups of inclined surfaces;

[0031] A protrusion is formed at the connection of the two groups of inclined surfaces.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] By setting up the supporting structure and control components, when the coolant level in the water-cooling tank changes, the bracket can drive the supporting roller to change in height and keep the supporting roller at half the depth of the liquid surface, thereby ensuring that when the softened strip plastic enters the coolant, it can evenly exchange heat with the coolant, thereby improving the cooling effect on the softened strip plastic; this can effectively avoid the phenomenon of local high temperature in the upper and lower layers of the coolant due to inconsistent heat exchange when the height of the softened strip plastic is fixed and the coolant level changes.

[0034] Through the circulation components and traction structures, firstly, the coolant in the water cooling tank can produce a flow circulation perpendicular to the length direction of the strip plastic and an impact directly below the strip plastic, which, on the one hand, causes turbulence in the coolant, thereby improving the heat exchange effect between the coolant and the strip plastic, that is, improving the cooling effect of the strip plastic; on the other hand, the two streams of coolant produce an upward force during impact, so that the impacting water flow can support the strip plastic between the two adjacent groups of support rollers, so as to prevent the strip plastic between the two adjacent groups of support rollers from bending due to suspension, thereby causing the strip plastic to break easily during subsequent granulation. Secondly, the inclination direction of the water outlet can be automatically matched with the height of the bracket to ensure that the impact position of the coolant is below the strip plastic, so that when the bracket is at different heights, the heavy impact of the coolant can produce a supporting force on the strip plastic. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 The figure is a schematic structural diagram of an embodiment of a counter-flow cooling device.

[0036] Figure 2 It is a schematic diagram of the structure of a water cooling tank and a control component in one embodiment of a counter-flow cooling device.

[0037] Figure 3 for Figure 2 A magnified view of the structure at point B.

[0038] Figure 4 It is a schematic diagram of the structure of a water cooling tank and a circulation component in one embodiment of a counter-flow cooling device.

[0039] Figure 5 This is a schematic structural diagram of a supporting structure in an embodiment of a counter-flow cooling device.

[0040] Figure 6 It is a schematic diagram of the structure of the circulation component in one embodiment of the counter-flow cooling device.

[0041] Figure 7 It is a schematic diagram of the structure of a water supply pipe and a sleeve pipe in an embodiment of a counter-flow cooling device.

[0042] Figure 8This is a cross-sectional view of a water supply pipe and a sleeve pipe in an embodiment of a counter-flow cooling device.

[0043] Fig. 9 for Figure 1 A magnified view of the structure at center.

[0044] Fig.10 This is a schematic diagram of the structure of an elastic support assembly and a locking portion in an embodiment of a counter-flow cooling device.

[0045] In the figure: 1, hot melt extrusion device; 2, water cooling tank; 3, bracket; 301, retardation tank; 4, supporting roller; 5, groove wheel; 6, sliding member; 7, first guide member; 8, first traction rod; 9, second traction rod; 10, gear set; 11, second guide member; 12, sliding connection member; 13, electric telescopic rod; 14, liquid level sensor; 15, follower frame; 1501, horizontal tank; 16, water supply pipe; 16 01. Through hole; 17. Fitting tube; 1701. Tightening position; 1702. Spraying position; 18. Connecting rod; 19. Fitting shaft; 20. Return pump device; 21. Reflux pipe; 22. Discharge port; 23. Extrusion plate; 2301. Extrusion hole; 2302. Identification point; 24. Inclined surface; 25. Locking groove; 26. Horizontal plate; 27. Columnar spring; 28. Sliding block; 29. ​​Locking wheel; 30. Identification device. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0048] See also Figures 1 to 10 In an embodiment of the present invention, a counter-flow cooling device includes: a water cooling tank 2, a control component, a circulation component and a traction structure.

[0049] See also Figure 1 , Figure 5A supporting structure is provided in the water-cooling tank 2 along its length direction, and the supporting structure includes two groups of brackets 3 provided along the length direction of the water-cooling tank 2, and multiple groups of supporting rollers 4 are equidistant and rotatably installed between the two groups of brackets 3;

[0050] The supporting structure further comprises a retaining kit connecting the bracket 3 and the water cooling tank 2, the retaining kit being capable of keeping the bracket 3 in a horizontal state, the retaining kit comprising a first guide member 7 fixedly mounted on the water cooling tank 2, a sliding member 6 being slidably mounted on the first guide member 7, and a plurality of sheaves 5 being rotatably mounted on one end of the sliding member 6 away from the first guide member 7;

[0051] The retaining kit further includes a retardation groove 301 arranged along the length direction of the bracket 3 , and the sheave 5 can roll in the retardation groove 301 .

[0052] When in use, the strip plastic extruded by the extruder is pulled onto the support roller 4 and submerged in the coolant in the water cooling tank 2 to cool the strip plastic, thereby facilitating the subsequent cutting and granulation of the strip plastic. Among them, since the support rollers 4 are arranged in multiple groups at equal intervals, they can play a good supporting role for the strip plastic in a softened state, avoiding the softened strip plastic from bending in the water cooling tank 2, thereby causing the strip plastic to break due to uneven force during the subsequent pulling process.

[0053] Furthermore, the control component only pulls one end of the bracket 3, that is, there is no need to set control components on both sides of the bracket 3, which reduces the production and manufacturing costs of the device and reduces the complexity of the device. However, it is difficult to control the horizontality of the bracket 3 by setting only one set of control components. In this embodiment, when the control component drives the bracket 3 to perform a lifting action (the specific action state is described in detail below), the bracket 3 has horizontal and vertical movement forces. At this time, the groove wheel 5 can slide in the retardation groove 301, and the sliding member 6 can move along the length direction of the first guide member 7, so that under the guidance of the first guide member 7, the sliding member 6, the groove wheel 5 and the retardation groove 301, the height of the bracket 3 changes, and the bracket 3 can also maintain a horizontal state, so that when the strip plastic passes through the supporting roller 4, the strip plastic can be cooled and kept in a straight state, ensuring the cooling effect while improving the straightness of the strip plastic.

[0054] See also Figure 3 , Figure 5 , the control component is connected to the water cooling tank 2 and the bracket 3, and a liquid level sensor 14 is provided on the top of the control component. The liquid level sensor 14 can adjust the action of the control component according to the real-time water level in the water cooling tank 2, so that the supporting structure is at half of the water level;

[0055] The control assembly includes a first traction rod 8 and a second traction rod 9 symmetrically mounted on one end of the bracket 3, and the rotating shafts of the first traction rod 8 and the second traction rod 9 are connected via a meshing gear set 10;

[0056] One end of the first traction rod 8 away from the bracket 3 is connected to the bottom of the water cooling tank 2;

[0057] The control component also includes a second guide member 11 fixedly mounted on the side wall of the water cooling tank 2, an electric telescopic rod 13 fixedly mounted on the second guide member 11, the electric telescopic rod 13 is connected to a sliding connector 12 slidably mounted on the second guide member 11, the sliding connector 12 is connected to an end of the second traction rod 9 away from the bracket 3, and the sliding connector 12 is fixedly connected to the liquid level sensor 14.

[0058] When in use, the external coolant pumping device (not shown in the figure) is connected to the water cooling tank 2 through a pipeline, so that the coolant in the water cooling tank 2 can circulate. In this process, the heat exchange effect between the coolant and the strip plastic can be effectively improved, thereby improving the cooling effect. At this time, the flow direction of the coolant is parallel to the length direction of the strip plastic, and the specific flow direction is opposite to the movement direction of the strip plastic.

[0059] When the coolant level in the water-cooling tank 2 changes, the liquid level sensor 14 can detect the coolant level in real time and control the electric telescopic rod 13 to move. Specifically, when the coolant level in the water-cooling tank 2 rises, the electric telescopic rod 13 can drive the sliding connection 12 to move upward along the length direction of the second guide member 11, and make the second traction rod 9 deflect upward relative to the bracket 3. Since the second traction rod 9 is connected to the first traction rod 8 by the gear set 10, the corresponding first traction rod 8 can deflect downward relative to the bracket 3, that is, the first traction rod 8 and the second traction rod 9 can maintain a real-time symmetrical state relative to the bracket 3 through the gear set 10, so that the bracket 3 can be in the middle position of the liquid surface water level. At this time, the softened strip plastic on the supporting roller 4 can perform more sufficient heat exchange in the coolant, avoiding the strip plastic being in a non-central position below the cooling liquid surface, which causes the strip plastic to be cooled inconsistently due to the high temperature of the local area of ​​the coolant during the heat exchange process.

[0060] Through the above arrangement, when the coolant level in the water-cooling tank 2 changes, the bracket 3 can drive the support roller 4 to change in height, and keep the support roller 4 at half the depth of the coolant level, so as to ensure that when the softened strip plastic enters the coolant, it can evenly exchange heat with the coolant, thereby improving the cooling effect on the softened strip plastic. This can effectively avoid the phenomenon of local high temperature in the upper and lower layers of the coolant due to inconsistent heat exchange when the height of the softened strip plastic is fixed and the coolant level changes.

[0061] See also Figure 4 , Figure 6 to Figure 8 The circulation assembly is arranged on the water cooling tank 2, and two sets of sleeve pipes 17 are arranged on the circulation assembly, and the coolant entering the circulation assembly can be sprayed out through the sleeve pipes 17;

[0062] The circulation assembly includes a return pump device 20 fixedly mounted on the water cooling tank 2, the liquid inlet of the return pump device 20 is connected to a return pipe 21, and the liquid outlet is connected to a water supply pipe 16, the return pipe 21 is communicated with the bottom of the water cooling tank 2, the water supply pipe 16 is arranged inside the water cooling tank 2, and the water supply pipe 16 is equidistantly provided with multiple groups of through holes 1601;

[0063] The sleeve pipe 17 is slidably mounted on the water supply pipe 16. Specifically, the sleeve pipe 17 is provided with a water outlet groove along its length direction. The water outlet groove is formed with a tightening position 1701 and a spraying position 1702 along the flow direction of the coolant. The coolant can be pressurized after passing through the tightening position 1701.

[0064] When in use, the return pump device 20 can draw the coolant at the bottom of the water cooling tank 2 into the return pump device 20 through the return pipe 21, and then the return pump device 20 pumps the coolant into the water supply pipe 16, and passes through the through hole 1601, and flows out from the water outlet grooves on the two sets of sleeve pipes 17. During this process, the coolant in the water cooling tank 2 can circulate (the circulation direction is perpendicular to the length direction of the strip plastic). At the same time, the water outlet grooves on the two sets of sleeve pipes 17 are relatively inclined, so that after the coolant flows out of the water outlet groove, it can produce opposite impacts. On the one hand, it can cause turbulence in the coolant, thereby improving the heat exchange effect between the coolant and the strip plastic, that is, improving the cooling effect of the strip plastic. On the other hand, the two streams of coolant generate an upward force when impacting, so that the impacting water flow can support the strip plastic between the two adjacent groups of support rollers 4, so as to prevent the strip plastic between the two adjacent groups of support rollers 4 from bending due to suspension, thereby causing the strip plastic to be easily broken during subsequent granulation.

[0065] Furthermore, when the coolant enters the water outlet groove through the through hole 1601, due to the tightening position 1701 formed inside the water outlet groove, the coolant can be pressurized when passing through the water outlet groove, thereby increasing the outflow speed of the coolant, and then increasing the impact force between the two outflowing coolants to ensure the turbulence and support for the strip plastic.

[0066] The traction structure connects the control assembly and the sleeve pipe 17. The traction structure can change the angle of the coolant spray when the control assembly is in action. The traction structure includes a connecting rod 18 fixedly connected to the sleeve pipe 17. The end of the connecting rod 18 away from the sleeve pipe 17 is provided with an engaging shaft 19.

[0067] The traction structure further includes a follower frame 15 fixedly connected to the sliding connection member 12 . The follower frame 15 is provided with a transverse groove 1501 along its length direction. The engaging shaft 19 can slide in the transverse groove 1501 .

[0068] Since the height of the bracket 3 and the supporting roller 4 will change with the liquid level of the coolant, the angle of the coolant sprayed from the water outlet trough also needs to change accordingly, and the impact position of the two streams of coolant is controlled to be at the lower part of the strip plastic, so that the impact of the coolant produces a supporting force on the strip plastic. Specifically:

[0069] In this embodiment, when the electric telescopic rod 13 moves to change the height of the bracket 3, the follower frame 15 connected thereto will also change in height. At this time, with the cooperation of the transverse groove 1501 and the interlocking shaft 19, the sleeve tube 17 can follow the connecting rod 18 to change its angle, and the inclination angle of the water outlet grooves on the two sets of sleeve tubes 17 is changed to ensure that after the coolant flows out of the water outlet groove, it can produce an impact and the impact position can be directly below the strip plastic, so as to ensure the supporting effect of the strip plastic suspended between the two sets of supporting rollers 4.

[0070] Through the above arrangement, firstly, the coolant in the water cooling tank 2 can generate a flow circulation perpendicular to the length direction of the strip plastic and an impact directly below the strip plastic, which, on the one hand, causes turbulence in the coolant, thereby improving the heat exchange effect between the coolant and the strip plastic, that is, improving the cooling effect of the strip plastic; on the other hand, the two streams of coolant generate an upward force during the impact, so that the impacting water flow can support the strip plastic between the two adjacent groups of support rollers 4, and prevent the strip plastic between the two adjacent groups of support rollers 4 from bending due to suspension, thereby causing the strip plastic to break easily during subsequent granulation. Secondly, the inclination direction of the water outlet can be automatically matched with the height of the bracket 3 to ensure that the impact position of the coolant is below the strip plastic, so that when the bracket 3 is at different heights, the heavy impact of the coolant can generate a supporting force on the strip plastic.

[0071] See also Figure 1 , Figure 9-10 , as an embodiment of the present invention, a polymer plastic pelletizer is also proposed, including the counter-flow cooling device, and also including: a hot melt extrusion device 1 and a pelletizing device;

[0072] The hot melt extrusion device 1 is formed with a discharge port 22, and an extrusion plate 23 is slidably mounted on the discharge port 22. The extrusion plate 23 is provided with a plurality of groups of extrusion holes 2301 along its length direction. Specifically, in the present embodiment, there are three groups of extrusion holes 2301, and the apertures of the three groups of extrusion holes 2301 increase in sequence from top to bottom.

[0073] The discharge port 22 is also provided with an elastic support component, which cooperates with a limiting portion provided on the side of the extrusion plate 23 to enable one group of the extrusion holes 2301 to coincide with the discharge port 22;

[0074] The elastic support assembly includes a horizontal plate 26 fixedly mounted on the hot melt extrusion device 1, the horizontal plate 26 is provided with a slide groove along its length direction, a slider 28 is slidably mounted in the slide groove, and a locking wheel 29 is rotatably mounted on the slider 28;

[0075] The elastic support assembly further includes a transverse shaft disposed in the slide groove, the transverse shaft is slidably connected to the slider 28, and a cylindrical spring 27 is sleeved on the transverse shaft, one end of the cylindrical spring 27 is connected to the slider 28, and the other end is connected to the side wall of the slide groove;

[0076] The limiting portion includes a plurality of locking grooves 25 equidistantly arranged along the length direction of the extrusion plate 23, the locking grooves 25 are adapted to the locking wheels 29, and two adjacent groups of the locking grooves 25 are connected by two symmetrical groups of inclined surfaces 24;

[0077] A protrusion is formed at the connection of the two groups of inclined surfaces 24;

[0078] In the initial state, the locking wheel 29 is placed in one of the locking grooves 25, and the extrusion plate 23 can be locked at this time, thereby improving the stability of the extruded strip plastic.

[0079] When the diameter of the extruded strip plastic needs to be switched, first pull the slider 28 away from the extrusion plate 23 to compress the cylindrical spring 27 while the locking wheel 29 is separated from the locking groove 25. Then, while pulling the extrusion plate 23 up and down, release the slider 28. At this time, the locking wheel 29 can abut against the inclined surface 24. After the locking wheel 29 moves over the protrusion, the cylindrical spring 27 can release its elastic potential energy to allow the locking wheel 29 to enter another set of locking grooves 25, so that another set of extrusion holes 2301 can coincide with the discharge port 22 to achieve a change in the diameter of the extruded strip plastic.

[0080] The extrusion plate 23 is provided with a plurality of identification points 2302 adapted to the extrusion holes 2301 . The identification points 2302 are adapted to the identification device 30 provided on the discharge port 22 . The identification device 30 is electrically connected to the return pump device 20 .

[0081] The identification device 30 can identify the information corresponding to the identification point 2302, and when the diameter of the extruded strip plastic is larger, the power of the control return pump device 20 is increased. At this time, the amount of circulating coolant will increase, and the amount of coolant flowing out of the water outlet trough will increase. On the one hand, it can increase the turbulence generated by the impact of the coolant, and on the other hand, it can increase the upward supporting force generated by the impact, ensuring that the larger the diameter of the strip plastic, the greater the supporting force it receives, further reducing the risk of bending of the strip plastic in the suspended position.

[0082] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0083] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A counter-flow cooling device, characterized in that: include: A water cooling tank (2), wherein a supporting structure is arranged in the water cooling tank (2) along its length direction; A control component connected to the water cooling tank (2) and the supporting structure, a liquid level sensor (14) being arranged on the top of the control component, the liquid level sensor (14) being capable of adjusting the operation of the control component according to the real-time water level in the water cooling tank (2) so that the supporting structure is at a position half the water level; A circulation component is arranged on the water cooling tank (2), and two sets of sleeve pipes (17) are arranged on the circulation component, so that the cooling liquid entering the circulation component can be sprayed out through the sleeve pipes (17); A traction structure is connected to the control component and the sleeve pipe (17), and the traction structure can change the spraying angle of the coolant when the control component is in operation.

2. The counter-flow cooling device according to claim 1, characterized in that: The supporting structure comprises two groups of brackets (3) arranged along the length direction of the water cooling tank (2), and a plurality of groups of supporting rollers (4) are equidistantly and rotatably mounted between the two groups of brackets (3); The supporting structure also includes a retaining kit connecting the bracket (3) and the water cooling tank (2), and the retaining kit is capable of keeping the bracket (3) in a horizontal state.

3. A counter-flow cooling device according to claim 2, characterized in that: The retaining kit comprises a first guide member (7) fixedly mounted on the water cooling tank (2), a sliding member (6) being slidably mounted on the first guide member (7), and a plurality of sets of groove wheels (5) being rotatably mounted on one end of the sliding member (6) away from the first guide member (7); The retaining kit further comprises a retardation groove (301) arranged along the length direction of the bracket (3), and the groove wheel (5) is capable of rolling in the retardation groove (301).

4. The counter-flow cooling device according to claim 2, characterized in that: The control assembly comprises a first traction rod (8) and a second traction rod (9) symmetrically mounted on one end of the bracket (3) for rotation, wherein the rotation axes of the first traction rod (8) and the second traction rod (9) are connected via a meshing gear set (10); One end of the first traction rod (8) away from the bracket (3) is connected to the bottom of the water cooling tank (2); The control assembly further comprises a second guide member (11) fixedly mounted on a side wall of the water cooling tank (2), an electric telescopic rod (13) fixedly mounted on the second guide member (11), the electric telescopic rod (13) being connected to a sliding connection member (12) slidably mounted on the second guide member (11), the sliding connection member (12) being connected to an end of the second traction rod (9) away from the bracket (3), and the sliding connection member (12) being fixedly connected to the liquid level sensor (14).

5. The counter-flow cooling device according to claim 1, characterized in that: The circulation component comprises a return pump device (20) fixedly mounted on the water cooling tank (2); the liquid inlet of the return pump device (20) is connected to a return pipe (21), and the liquid outlet is connected to a water supply pipe (16); the return pipe (21) is connected to the bottom of the water cooling tank (2); the water supply pipe (16) is arranged inside the water cooling tank (2), and a plurality of groups of through holes (1601) are equidistantly arranged on the water supply pipe (16); The sleeve pipe (17) is slidably sleeved on the water delivery pipe (16).

6. The counter-flow cooling device according to claim 1, characterized in that: The sleeve pipe (17) is provided with a water outlet groove along its length direction, and the water outlet groove forms a tightening position (1701) and a spraying position (1702) along the flow direction of the coolant, and the coolant can be pressurized after passing through the tightening position (1701).

7. The counter-flow cooling device according to claim 4, characterized in that: The traction structure comprises a connecting rod (18) fixedly connected to the sleeve tube (17), and an engaging shaft (19) is provided at one end of the connecting rod (18) away from the sleeve tube (17); The traction structure also includes a follower frame (15) fixedly connected to the sliding connection member (12), and the follower frame (15) is provided with a transverse groove (1501) along its length direction, and the engaging shaft (19) can slide in the transverse groove (1501).

8. A polymer plastic pelletizer, characterized in that: The counter-flow cooling device comprises the counter-flow cooling device as claimed in any one of claims 1 to 7, and further comprises: a hot melt extrusion device (1) and a pelletizing device; The hot melt extrusion device (1) is formed with a discharge port (22), an extrusion plate (23) is slidably mounted on the discharge port (22), and the extrusion plate (23) is provided with a plurality of groups of extrusion holes (2301) along its length direction; The discharge port (22) is also provided with an elastic support component, and the elastic support component cooperates with a limiting portion provided on the side of the extrusion plate (23) so as to enable one group of the extrusion holes (2301) to coincide with the discharge port (22); The extrusion plate (23) is provided with a plurality of identification points (2302) adapted to the extrusion holes (2301), and the identification points (2302) are adapted to the identification device (30) provided on the discharge port (22), and the identification device (30) is electrically connected to the return pump device (20).

9. A polymer plastic pelletizer according to claim 8, characterized in that: The elastic support assembly comprises a transverse plate (26) fixedly mounted on the hot melt extrusion device (1), the transverse plate (26) being provided with a slide groove along its length direction, a slider (28) being slidably mounted in the slide groove, and a locking wheel (29) being rotatably mounted on the slider (28); The elastic support assembly also includes a transverse axis arranged in the slide groove, the transverse axis is slidably connected to the slider (28), and a columnar spring (27) is sleeved on the transverse axis, one end of the columnar spring (27) is connected to the slider (28), and the other end is connected to the side wall of the slide groove.

10. A polymer plastic pelletizer according to claim 9, characterized in that: The limiting portion comprises a plurality of groups of locking grooves (25) equidistantly arranged along the length direction of the extrusion plate (23), the locking grooves (25) being adapted to the locking wheels (29), and two adjacent groups of the locking grooves (25) being connected via two symmetrical groups of inclined surfaces (24); A protrusion is formed at the connection between the two groups of inclined surfaces (24).

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