Extrusion cooling device for oxygen-barrier radiation cross-linked pipe

Abstract

The invention provides an extrusion cooling device for oxygen-blocking radiation cross-linked pipes, and relates to the field of cooling devices.The extrusion cooling device comprises a water cooling pool, the inner side wall of the water cooling pool is provided with a plurality of partition plates, the partition plates divide the interior of the water cooling pool into a plurality of cooling chambers, each cooling chamber is internally provided with a condensation pipe, and the condensation pipes are connected with external refrigeration equipment; a water pump is installed at the bottom of the water cooling pool, and the input end of the water pump communicates with the multiple cooling chambers through flow dividing pipes. When a pipe enters the primary cooling pipe, the tightening sleeve can tighten the pipe, so that injected cooling air flow can flow down along the primary cooling pipe, the air flow can alternately flow in a staggered manner under the alternating action of the bevel conical cylinders and the straight conical cylinders during flowing, and the air flow can better cool the pipe; the bevel conical cylinder is provided with the two air grooves, different pressures can be formed, and airflow is assisted to converge.

Description

Technical Field

[0001] The present invention relates to the field of cooling devices, and more particularly, to an oxygen-barrier radiation cross-linked pipe extrusion cooling device. Background Art

[0002] With the continuous development of industrial production, the plastic pipe industry in China has also developed rapidly, and the quality of plastic pipes has been continuously improved. At present, a plastic pipe industry mainly composed of polyvinyl chloride pipes, polyethylene pipes, and polypropylene pipes has been initially formed. Among them, polyethylene pipes are widely used due to their unique advantages. To solve the problems of heat resistance and aging resistance of traditional polyethylene, radiation cross-linking technology has been introduced into pipe manufacturing. Technical principle: By irradiating polyethylene molecular chains with electron beams (EB) or γ-rays, free radical reactions are induced to form a three-dimensional network structure, significantly improving the heat resistance, mechanical strength, and chemical stability of the material.

[0003] After the pipe raw material is melted at high temperature and extruded by an extruder, since the just-produced pipe is still in a high-temperature state and has a soft texture, it needs to be cooled down. Otherwise, the pipe is likely to be deformed. Therefore, a cooling device is required to cool the pipe. The traditional cooling device directly uses the spraying method for cooling. Although the cooling purpose can be achieved, since the pipe is not fully shaped yet, the sprayed water droplets are likely to cause pits on the surface of the pipe. For this reason, we have made improvements and proposed an oxygen-barrier radiation cross-linked pipe extrusion cooling device. Summary of the Invention

[0004] The purpose of the present invention is to provide an oxygen-barrier radiation cross-linked pipe extrusion cooling device, which solves the problem that the traditional cooling device directly uses the spraying method for cooling. Although the cooling purpose can be achieved, since the pipe is not fully shaped yet, the sprayed water droplets are likely to cause pits on the surface of the pipe.

[0005] To achieve the above-mentioned invention purpose, the present invention provides an oxygen-barrier radiation cross-linked pipe extrusion cooling device, including a water cooling pool. The inner side wall of the water cooling pool has a plurality of partition plates, and the partition plates divide the interior of the water cooling pool into a plurality of cooling chambers. A condensing pipe is installed in each cooling chamber, and the condensing pipe is connected to an external refrigeration device. A water pump is installed at the bottom of the water cooling pool. The input end of the water pump is connected to the plurality of cooling chambers through a shunt pipe, and electromagnetic water valves for opening and closing the corresponding cooling chambers are respectively arranged on the shunt pipe. Sliding rails, fixedly connected to both sides of the water cooling pool, and a moving mechanism is installed on the sliding rails, and the moving mechanism can slide horizontally along the length direction of the sliding rails. A supporting mechanism, connected to the moving end of the moving mechanism, for carrying the extruded pipe. A primary cooling pipe, arranged at the front end of the water cooling pool for initially cooling and shaping the extruded pipe. The isolation pipe is fixedly connected to the outer wall of the primary cooling pipe to reduce the temperature loss of the primary cooling pipe.

[0006] As a preferred technical solution of the present invention, the moving mechanism includes two sliding platforms slidably mounted on the side walls of the slide rails. A cage is fixedly connected between the two sliding platforms. A horizontal linear motor is fixedly installed between the cages. A vertical linear motor is fixedly installed at the moving end of the horizontal linear motor. A driving motor is installed on the side wall of one of the sliding platforms. The output end of the driving motor is fixedly connected with a gear. The outer wall of the gear is engaged with a rack. The rack is fixedly installed on the side wall of the water cooling pool.

[0007] As a preferred technical solution of the present invention, the supporting mechanism includes a lifting platform fixedly installed at the moving end of the vertical linear motor. A lower pipe clamp is fixedly installed on the inner bottom wall of the lifting platform. A slide rod is slidably connected to the inner top wall of the lifting platform. An upper pipe clamp is fixedly installed at the bottom of the slide rod. A thrust spring is sleeved on the outer wall of the slide rod. One end of the thrust spring is fixedly connected to the upper pipe clamp.

[0008] As a preferred technical solution of the present invention, a hinge seat is fixedly installed on the top of the lifting platform. A jacking frame is rotatably connected to the side wall of the hinge seat. The jacking frame and the hinge seat are elastically matched through a torsion spring. The jacking frame has a short support rod and a long support rod, and the two support rods are distributed at an obtuse angle.

[0009] As a preferred technical solution of the present invention, the top of the slide rod has a top plate corresponding to the long support rod, and the side wall of the vertical linear motor has a power rod adapted to the short support rod.

[0010] As a preferred technical solution of the present invention, one end of the inner side wall of the primary cooling pipe is threadedly connected with a tightening sleeve. A straight cone and an inclined cone are also connected inside the primary cooling pipe. The inclined cone is located between the two straight cones, and the outlet ends of two adjacent inclined cones are arranged up and down staggeredly.

[0011] As a preferred technical solution of the present invention, the side wall of the inclined cone is provided with a first air groove and a second air groove. The aperture area of the first air groove is larger than that of the second air groove. One end of the outer wall of the primary cooling pipe is fixedly connected with a first cooling air flow joint, and a first solenoid valve is arranged on the first cooling air flow joint.

[0012] As a preferred technical solution of the present invention, the tightening sleeve includes a threaded end head threadedly connected to the primary cooling pipe. At least two rubber sleeves are connected to one side of the threaded end head. A plurality of opening slits are formed on the rubber sleeves. The two rubber sleeves are arranged in a staggered manner so that the plurality of opening slits are evenly arranged.

[0013] As a preferred technical solution of the present invention, both ends of the isolation pipe are hermetically connected to the primary cooling pipe. At both ends of the outer wall of the isolation pipe, inert cooling air flow connectors are respectively connected. A second solenoid valve is arranged on the outer wall of the inert cooling air flow connector. A flow dividing block is also arranged between the isolation pipe and the primary cooling pipe.

[0014] As a preferred technical solution of the present invention, the number of the flow dividing blocks is multiple and they are irregularly arranged between the isolation pipe and the primary cooling pipe. The flow dividing block is a solid structure for supporting the isolation pipe and the primary cooling pipe. The inclination angle of the inflow inclined plane of the flow dividing block is greater than that of the outflow inclined plane.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: In the solution of the present invention: Through the settings of the water cooling pool, the slide rail, the moving mechanism, the primary cooling pipe and the isolation pipe, when the pipe enters the primary cooling pipe, the tightening sleeve can tighten the pipe, so that the injected cooling air flow can flow along the primary cooling pipe. When the air flow is flowing, it can flow alternately under the alternation of the inclined plane cone and the straight plane cone, so that the air flow can better cool the pipe. The inclined plane cone has two air grooves, which can form different pressures to assist the air flow to converge. At the same time, under the protection of the isolation pipe, the temperature loss of the primary cooling pipe can be effectively reduced. Moreover, by inputting inert gas into the isolation pipe, the temperature loss can be further reduced. The driving motor drives the gear to rotate, which can be engaged on the toothed plate, so that the sliding table slides on the slide rail, driving the supporting device to move on the water cooling pool. When the supporting device approaches the pipe, the vertical linear motor drives the lifting sliding table to slide upward. When the power rod touches the jacking frame, it can push the sliding rod upward, so as to drive the upper pipe clamp to open and receive the pipe, carry the pipe so that the pipe can enter the water cooling pool for water cooling, and multiple cooling chambers can cool the pipe to different degrees. Description of the Drawings

[0016] Figure 1 It is a three-dimensional structural schematic diagram of an oxygen-barrier radiation cross-linked pipe extrusion cooling device provided by the present invention; Figure 2 It is a second perspective structural schematic diagram of an oxygen-barrier radiation cross-linked pipe extrusion cooling device provided by the present invention; Figure 3 It is a front view structural schematic diagram of an oxygen-barrier radiation cross-linked pipe extrusion cooling device provided by the present invention; Figure 4 It is a structural schematic diagram of the moving mechanism and the supporting mechanism of an oxygen-barrier radiation cross-linked pipe extrusion cooling device provided by the present invention; Figure 5 It is an oxygen-barrier radiation cross-linked pipe extrusion cooling device provided by the present invention Figure 4Side view structure schematic diagram; Figure 6 Cross-sectional structure schematic diagram of the primary cooling pipe of an oxygen barrier radiation cross-linked pipe extrusion cooling device provided by the present invention; Figure 7 Partial structure schematic diagram of the primary cooling pipe of an oxygen barrier radiation cross-linked pipe extrusion cooling device provided by the present invention; Figure 8 Structure schematic diagram of the primary cooling pipe and the isolation pipe of an oxygen barrier radiation cross-linked pipe extrusion cooling device provided by the present invention; Figure 9 Structure schematic diagram of the primary cooling pipe of an oxygen barrier radiation cross-linked pipe extrusion cooling device provided by the present invention.

[0017] Labels in the figure: 10, water cooling pool; 11, partition board; 12, cooling chamber; 13, condensation pipe; 14, slide rail; 15, water pump; 20, moving mechanism; 21, slide table; 22, cage; 23, horizontal linear motor; 24, vertical linear motor; 25, driving motor; 26, gear; 27, toothed plate; 30, support mechanism; 31, lifting platform; 32, lower pipe clamp; 33, slide bar; 34, upper pipe clamp; 35, thrust spring; 36, jacking frame; 37, top plate; 38, power rod; 40, primary cooling pipe; 41, tightening sleeve; 411, threaded end; 412, rubber sleeve; 42, straight conical cylinder; 43, inclined conical cylinder; 44, first air groove; 45, second air groove; 46, first cooling air flow joint; 50, isolation pipe; 51, inert cooling air flow joint; 52, flow dividing block. Specific embodiments

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0019] Please refer to Figures 1 to 9, the present invention provides a technical solution: an oxygen-barrier radiation cross-linked pipe extrusion cooling device, including a water cooling pool 10. The inner side wall of the water cooling pool 10 has a plurality of partition plates 11. The partition plates 11 partition the water cooling pool 10, thereby forming a plurality of cooling areas. The partition plates 11 divide the interior of the water cooling pool 10 into a plurality of cooling chambers 12. A condensing pipe 13 is installed in each cooling chamber 12. The condensing pipe 13 is connected to an external refrigeration device. The refrigeration device can prepare cold air and transport it into the condensing pipe 13. The condensing pipe 13 can exchange heat with the water in the cooling chamber 12, thereby reducing the temperature of the cooling liquid in the cooling chamber 12, so as to achieve the purpose of effectively cooling the pipe. A water pump 15 is installed at the bottom of the water cooling pool 10. The input end of the water pump 15 is communicated with a plurality of cooling chambers 12 through a shunt pipe, and electromagnetic water valves for opening and closing the corresponding cooling chambers 12 are respectively arranged on the shunt pipe. When it is necessary to discharge the cooling liquid in the cooling chamber 12, the corresponding electromagnetic water valve can be opened, and the waste water can be pumped out through the water pump 15 to achieve the purpose of effective discharge; A slide rail 14, fixedly connected to both sides of the water cooling pool 10. A moving mechanism 20 is installed on the slide rail 14, and the moving mechanism 20 can slide horizontally along the length direction of the slide rail 14; A supporting mechanism 30, connected to the moving end of the moving mechanism 20, for carrying the extruded pipe; A primary cooling pipe 40, arranged at the front end of the water cooling pool 10 for initially cooling and shaping the extruded pipe; An isolation pipe 50, fixedly connected to the outer wall of the primary cooling pipe 40 for reducing the temperature loss of the primary cooling pipe 40.

[0020] As a preferred embodiment, on the basis of the above method, further, the moving mechanism 20 includes two slide tables 21 slidably installed on the side walls of the slide rail 14. A holding frame 22 is fixedly connected between the two slide tables 21. A horizontal linear motor 23 is fixedly installed between the holding frames 22. The moving end of the horizontal linear motor 23 is fixedly installed with a vertical linear motor 24. A driving motor 25 is installed on the side wall of one of the slide tables 21. The output end of the driving motor 25 is fixedly connected with a gear 26. The outer wall of the gear 26 is engaged with a toothed plate 27. The toothed plate 27 is fixedly installed on the side wall of the water cooling pool 10. The driving motor 25 drives the gear 26 to rotate, which can engage the toothed plate 27, so that the slide table 21 slides on the slide rail 14. The horizontal linear motor 23 can drive the vertical linear motor 24 to move, and the vertical linear motor 24 can drive the supporting mechanism 30 to move up and down.

[0021] As a preferred embodiment, on the basis of the above method, further, the support mechanism 30 includes a lifting platform 31 fixedly installed on the moving end of the vertical linear motor 24. A lower pipe clamp 32 is fixedly installed on the inner bottom wall of the lifting platform 31. A sliding rod 33 is slidably connected to the inner top wall of the lifting platform 31. An upper pipe clamp 34 is fixedly installed at the bottom of the sliding rod 33. A thrust spring 35 is sleeved on the outer wall of the sliding rod 33. One end of the thrust spring 35 is fixedly connected to the upper pipe clamp 34. The thrust spring 35 provides power for the upper pipe clamp 34, so that the upper pipe clamp 34 and the lower pipe clamp 32 cooperate with each other to clamp and fix the pipe. The sliding rod 33 is of a pentagonal prism structure to prevent rotation when sliding up and down.

[0022] A hinge seat is fixedly installed on the top of the lifting platform 31. A jacking frame 36 is rotatably connected to the side wall of the hinge seat. The jacking frame 36 and the hinge seat are elastically matched through a torsion spring. The jacking frame 36 has a short support rod and a long support rod, and the two support rods are distributed at an obtuse angle. The jacking frame 36 can rotate relative to the hinge seat. The torsion spring is sleeved at the support shaft of the jacking frame 36, and the two ends of the torsion spring are respectively fixedly connected to the jacking frame 36 and the hinge seat.

[0023] The top of the sliding rod 33 has a top plate 37 corresponding to the long support rod. The side wall of the vertical linear motor 24 has a power rod 38 adapted to the short support rod. When the power rod 38 touches the jacking frame 36, the jacking frame 36 can be flipped to provide power for the sliding rod 33.

[0024] As a preferred embodiment, on the basis of the above method, further, one end of the inner side wall of the primary cooling pipe 40 is threadedly connected with a tightening sleeve 41. A straight cone 42 and an inclined cone 43 are also connected inside the primary cooling pipe 40. The inclined cone 43 is located between the two straight cones 42, and the outlet ends of two adjacent inclined cones 43 are arranged up and down in a staggered manner.

[0025] The side wall of the inclined cone 43 is provided with a first air groove 44 and a second air groove 45. The aperture area of the first air groove 44 is larger than that of the second air groove 45. One end of the outer wall of the primary cooling pipe 40 is fixedly connected with a first cooling air flow joint 46. A first electromagnetic valve is arranged on the first cooling air flow joint 46. The first cooling air flow joint 46 can input cooling air flow to cool the primary cooling pipe 40.

[0026] The tightening sleeve 41 includes a threaded end 411 threadedly connected to the primary cooling pipe 40. At least two rubber sleeves 412 are connected to one side of the threaded end 411. A plurality of opening slits are formed in the rubber sleeves 412. The two rubber sleeves 412 are arranged in a staggered manner so that the plurality of opening slits are evenly arranged. The threaded end 411 can facilitate the replacement of the rubber sleeves 412 to suit different users.

[0027] As a preferred embodiment, on the basis of the above-described manner, further, both ends of the isolation pipe 50 are hermetically connected to the primary cooling pipe 40. Inert gas cooling air connectors 51 are respectively connected to both ends of the outer wall of the isolation pipe 50. A second solenoid valve is provided on the outer wall of the inert gas cooling air connector 51. A flow dividing block 52 is further provided between the isolation pipe 50 and the primary cooling pipe 40. The flow dividing block 52 can divide the air in the isolation pipe 50, thereby facilitating the confluence of the airflows and making the heat preservation effect more uniform.

[0028] The number of the flow dividing blocks 52 is multiple and they are irregularly arranged between the isolation pipe 50 and the primary cooling pipe 40. The flow dividing block 52 is a solid structure for supporting the isolation pipe 50 and the primary cooling pipe 40. The inclination angle of the inflow inclined surface of the flow dividing block 52 is greater than that of the outflow inclined surface. The flow dividing block 52 supports the isolation pipe 50 to ensure the rigidity of the isolation pipe 50.

[0029] Specifically, when this oxygen barrier radiation cross-linked pipe extrusion cooling device is in operation / use: when the pipe enters the primary cooling pipe 40, the tightening sleeve 41 can tighten the pipe, so that the injected cooling air can flow along the primary cooling pipe 40 in the downstream direction. When the airflows are flowing, they can flow alternately under the alternation of the inclined surface cone 43 and the straight surface cone 42, so that the airflows can better cool the pipe. The inclined surface cone 43 has two air grooves, which can form different pressures to assist the confluence of the airflows. At the same time, under the protection of the isolation pipe 50, the temperature loss of the primary cooling pipe 40 can be effectively reduced. Moreover, by inputting inert gas into the isolation pipe 50, the temperature loss can be further reduced. The driving motor 25 drives the gear 26 to rotate, which can then engage with the toothed plate 27, so that the sliding table 21 slides on the slide rail 14, driving the support mechanism 30 to move on the water cooling pool 10. When the support mechanism 30 approaches the pipe, the vertical linear motor 24 drives the lifting table 31 to slide upward. When the power rod 38 touches the jacking frame 36, it can push the slide rod 33 upward, thereby driving the upper pipe clamp 34 to open to receive the pipe, carrying the pipe so that the pipe can enter the water cooling pool 10 for water cooling, and multiple cooling chambers 12 can cool the pipe to different degrees.

[0030] The above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above-mentioned respective embodiments, the present invention is not limited to the above specific embodiments. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and their improvements that do not depart from the spirit and scope of the invention are covered by the scope of the claims of the present invention.

Claims

1. An oxygen-barrier radiation cross-linked pipe extrusion cooling device, characterized in that, It includes a water-cooling pool (10). The inner sidewall of the water-cooling pool (10) has a plurality of partition plates (11). The partition plates (11) divide the interior of the water-cooling pool (10) into a plurality of cooling chambers (12). A condensing pipe (13) is installed in each cooling chamber (12). The condensing pipe (13) is connected to an external refrigeration device. A water pump (15) is installed at the bottom of the water-cooling pool (10). The input end of the water pump (15) is communicated with a plurality of cooling chambers (12) through a shunt pipe, and electromagnetic water valves for opening and closing the corresponding cooling chambers (12) are respectively arranged on the shunt pipe; A slide rail (14), fixedly connected to both sides of the water-cooling pool (10). A moving mechanism (20) is installed on the slide rail (14). The moving mechanism (20) can slide horizontally along the length direction of the slide rail (14); A supporting mechanism (30), connected to the moving end of the moving mechanism (20) for carrying an extrusion pipe; A primary cooling pipe (40), arranged at the front end of the water-cooling pool (10) for initially cooling and shaping the extrusion pipe; An isolation pipe (50), fixedly connected to the outer wall of the primary cooling pipe (40) for reducing the temperature loss of the primary cooling pipe (40).

2. The oxygen barrier radiation cross-linked pipe extrusion cooling device according to claim 1, wherein, The moving mechanism (20) includes two sliding platforms (21) slidably installed on the sidewalls of the slide rail (14). A holder (22) is fixedly connected between the two sliding platforms (21). A horizontal linear motor (23) is fixedly installed between the holders (22). A vertical linear motor (24) is fixedly installed at the moving end of the horizontal linear motor (23). A driving motor (25) is installed on the sidewall of one of the sliding platforms (21). The output end of the driving motor (25) is fixedly connected with a gear (26). The outer wall of the gear (26) is engaged with a toothed plate (27). The toothed plate (27) is fixedly installed on the sidewall of the water-cooling pool (10).

3. The oxygen barrier radiation cross-linked pipe extrusion cooling device according to claim 2, wherein, The supporting mechanism (30) includes a lifting platform (31) fixedly installed at the moving end of the vertical linear motor (24). A lower pipe clamp (32) is fixedly installed on the inner bottom wall of the lifting platform (31). A slide rod (33) is slidably connected to the inner top wall of the lifting platform (31). An upper pipe clamp (34) is fixedly installed at the bottom of the slide rod (33). A thrust spring (35) is sleeved on the outer wall of the slide rod (33). One end of the thrust spring (35) is fixedly connected with the upper pipe clamp (34).

4. The oxygen barrier radiation cross-linked pipe extrusion cooling device according to claim 3, characterized in that, A hinge seat is fixedly installed at the top of the lifting platform (31). A jacking frame (36) is rotatably connected to the sidewall of the hinge seat. The jacking frame (36) and the hinge seat are elastically matched through a torsion spring. The jacking frame (36) has a short support rod and a long support rod, and the two support rods are distributed at an obtuse angle.

5. The oxygen barrier radiation cross-linked pipe extrusion cooling device according to claim 4, characterized in that, The top of the slide rod (33) has a top plate (37) corresponding to the long support rod. The sidewall of the vertical linear motor (24) has a power rod (38) adapted to the short support rod.

6. The oxygen barrier radiation cross-linked pipe extrusion cooling device according to claim 1, characterized in that, One end of the inner side wall of the primary cooling pipe (40) is threadedly connected with a tightening sleeve (41). A straight surface cone (42) and an inclined surface cone (43) are also connected inside the primary cooling pipe (40). The inclined surface cone (43) is located between two straight surface cones (42), and the outlet ends of two adjacent inclined surface cones (43) are arranged staggeredly up and down.

7. An oxygen barrier radiation cross-linked pipe extrusion cooling device according to claim 6, characterized in that, The side wall of the inclined surface cone (43) is provided with a first air groove (44) and a second air groove (45). The pore area of the first air groove (44) is larger than that of the second air groove (45). One end of the outer wall of the primary cooling pipe (40) is fixedly connected with a first cooling air flow joint (46), and a first electromagnetic valve is arranged on the first cooling air flow joint (46).

8. An oxygen barrier radiation cross-linked pipe extrusion cooling device according to claim 7, characterized in that, The tightening sleeve (41) includes a threaded end (411) threadedly connected with the primary cooling pipe (40). At least two rubber sleeves (412) are connected to one side of the threaded end (411). A plurality of opening slits are formed in the rubber sleeves (412), and the two rubber sleeves (412) are arranged staggeredly so that the plurality of opening slits are evenly arranged.

9. The oxygen barrier radiation cross-linking pipe extrusion cooling device according to claim 1, characterized in that, Both ends of the isolation pipe (50) are hermetically connected with the primary cooling pipe (40). Inert cooling air flow joints (51) are respectively connected to both ends of the outer wall of the isolation pipe (50). A second electromagnetic valve is arranged on the outer wall of the inert cooling air flow joint (51). A flow dividing block (52) is also arranged between the isolation pipe (50) and the primary cooling pipe (40).

10. A kind of oxygen barrier radiation cross-linked pipe extrusion cooling device according to claim 9, characterized in that, The number of the flow dividing blocks (52) is multiple and they are irregularly arranged between the isolation pipe (50) and the primary cooling pipe (40). The flow dividing block (52) is of a solid structure for supporting the isolation pipe (50) and the primary cooling pipe (40). The inclination angle of the inflow inclined surface of the flow dividing block (52) is larger than that of the outflow inclined surface.

Images