Wiredrawing cooling device for steel strand production

Abstract

The utility model relates to the technical field of steel strand production, and discloses a wiredrawing cooling device for steel strand production, which comprises a base and further comprises a cooling cylinder, supporting plates are symmetrically arranged on the upper surface of the base and positioned above the base, and the exteriors of the two supporting plates are fixedly connected with the exterior of the cooling cylinder; the cooling assembly is located above the cooling cylinder; the circulating assembly is located above the base; and the L-shaped plates are symmetrically arranged outside the cooling cylinder. According to the steel strand cooling device, the steel strand can be effectively cooled through the arranged cooling assembly, water resources can be effectively recycled through the arranged circulating assembly, and therefore the overall environmental protection property and practicability of the device can be effectively improved; and a worker can conveniently detach and replace wiping cotton, and the overall practicability of the device is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel strand production technical field, concretely relates to a wire drawing cooling device for steel strand production. BACKGROUND

[0002] Steel strand is the steel product that is twisted by many steel wires, and the surface of carbon steel can be coated with zinc layer, zinc-aluminum alloy layer, aluminum layer, copper layer, epoxy resin, etc. according to needs, and can be divided into prestressed steel strand, galvanized steel strand and stainless steel strand according to use, wherein the prestressed steel strand coated with anticorrosive grease or paraffin is called unbonded prestressed steel strand, and the prestressed steel strand is made of galvanized or zinc-aluminum alloy steel wire, and the manufacturing process is divided into single wire manufacturing and strand manufacturing, and the single wire is manufactured by wire drawing technology, and the different materials of products can be high-carbon steel wire rod, stainless steel wire rod or medium-low carbon steel wire rod, and if galvanizing is needed, electroplating or hot galvanizing treatment should be carried out on the single wire, and after the steel strand is subjected to wire drawing treatment, a wire drawing cooling device for steel strand production is needed to cool the steel strand.

[0003] The cooling device in the prior art generally uses cold water to cool the steel strand, but the cooling device in the prior art cannot effectively recycle the cold water, which leads to a large amount of waste of water resources, reduces the environmental protection and practicality of the cooling device as a whole, and the cooling device in the prior art cannot conveniently disassemble, replace and clean the wiping cotton, and after the wiping cotton is used for a long time, damage and other problems are inevitable, and if the wiping cotton is not disassembled, replaced and cleaned, the wiping effect of the wiping cotton on the steel strand is affected, and the drying degree of the steel strand after wiping is reduced.

[0004] By comparing the Chinese patent with publication number CN214391665U, the utility model discloses a wire drawing cooling device for steel strand production and processing, including the cooling box, the cooling box is provided with the feed port in one section, and the other end of the cooling box relative to the feed port is provided with the discharge port, and the discharge port is installed with the water absorption sponge, the water inlet pipe is fixedly installed on the top of the one side of the cooling box close to the feed port, the other end of the water inlet pipe is fixedly installed with the shower, and the water outlet pipe is fixedly installed below the water inlet pipe, the side of the top of the cooling box is fixedly installed with the box body, and the fan is fixedly installed in the inside of the box body, and the fan is installed with the ventilation pipe, and the other end of the ventilation pipe is connected on the wind cover, and the wind cover is fixedly installed on the top of the cooling box, the utility model has the beneficial effects that the fan is installed on the cooling box, the water attached to the steel strand is quickly dried by the fan blowing, the steel strand is further dried through the water absorption sponge, the steel strand is protected from rusting by residual moisture, and the production quality of the steel strand is improved.

[0005] The above scheme can effectively dry the moisture outside the steel strand, but still needs to use a large amount of water resources when cooling the steel strand, and the above scheme still cannot conveniently disassemble and replace the wiping cotton, and cannot solve the problems in the background art.

[0006] Therefore, the technical personnel in the art provide a wire drawing cooling device for steel strand production to solve the problems in the background art. Utility model content

[0007] The utility model discloses a wire drawing cooling device for steel strand production, including base, still including:

[0008] Cooling cylinder, be located the top of base, the upper surface of base is equipped with the support plate symmetry, and the outside of two support plates is fixedly connected with the outside of cooling cylinder.

[0009] Cooling assembly, be located the top of cooling cylinder.

[0010] Circulation component, be located the top of base.

[0011] L-shaped board, symmetry sets up the outside of cooling cylinder, and the inside of two L-shaped boards is all opened with the installation hole for installing electric telescopic rod, and the telescopic end of two electric telescopic rods is all fixedly connected with the installation frame, and the inside of two installation frames is equipped with the mounting plate, and the outside of two mounting plates is all fixedly connected with wiping cotton.

[0012] Installation component, symmetry sets up the outside of installation frame.

[0013] As the further improvement of the technical scheme, the cooling assembly includes a water storage cylinder located above the cooling cylinder, the upper surfaces of the two support plates are fixedly connected with a fixed frame, the outer surface of the water storage cylinder is fixedly connected with the inner surface of the fixed frame, the outer surface of the fixed frame is fixedly connected with a connecting plate, the upper surface of the connecting plate is fixedly connected with a water pump, the inner wall of the cooling cylinder is fixedly connected with a plurality of mounting rings, the inner surfaces of the plurality of mounting rings are fixedly connected with a plurality of annular pipes, the inner surfaces of the plurality of annular pipes are equally spaced and communicated with a plurality of spray heads, the water inlet end of the water pump is communicated with the bottom of the water storage cylinder through a pipeline, the water outlet end of the water pump is communicated with the inner surfaces of the plurality of annular pipes through branch pipes, and the bottom of the cooling cylinder is provided with a drain hole.

[0014] As a further improvement of the technical solution, the circulating assembly comprises a filter box fixedly connected between the two support plates, the inner wall of the filter box is symmetrically provided with a refrigerator, the upper surface of the base is fixedly connected with a circulating water pump, the water inlet end of the circulating water pump is communicated with the bottom of the filter box through a pipeline, the water outlet end of the circulating water pump is communicated with the upper surface of the water storage cylinder through a pipeline, and the bottom of the filter box is communicated with a drain pipe through an electromagnetic valve.

[0015] As a further improvement of the technical solution, the inside of the filter box is provided with a filter screen, the upper surface of the filter screen is fixedly connected with a plurality of plug-in plates, the outer wall of the filter box is symmetrically provided with a fixed frame on both sides, the upper surface of each of the plurality of fixed frames is provided with a guide groove for the plug-in plate to move, the outer wall of the filter box is fixedly connected with a fixed plate on both sides, the inside of the fixed plate is symmetrically provided with a sliding rod, the both ends of the sliding rod are fixedly connected with the inner walls of the fixed plate on both sides, the inside of the fixed plate is provided with a contact plate, the inside of the contact plate is provided with a guide groove for the sliding rod to move, the outside of the sliding rod is sleeved with a return spring, the return spring is in contact between the contact plate and the fixed plate, the outside of the contact plate is fixedly connected with an outer plate through a side plate, the opposite side of the two outer plates is symmetrically provided with a plug-in rod, and the inside of the fixed frame and the plug-in plate is provided with a guide groove for the plug-in rod to move.

[0016] As a further improvement of the technical solution, the mounting assembly comprises a fixed sleeve symmetrically arranged outside the mounting frame, a fixed rod is arranged in the fixed sleeve, one end of the fixed rod is fixedly connected with a pull plate, the outside of the fixed rod is fixedly connected with a contact disc, the outside of the fixed rod is sleeved with a contact spring, the contact spring is in contact between the contact disc and the fixed sleeve, the contact surfaces of the fixed sleeve and the mounting frame are provided with guide grooves for the fixed rod to move, and the inside of the mounting plate is provided with a guide groove for the fixed rod to move.

[0017] As a further improvement of the technical solution, the upper surface of the cooling cylinder is fixedly connected with a hot air machine, and the air outlet end of the hot air machine is communicated with the inside of the cooling cylinder through a pipeline.

[0018] Compared with the prior art, the beneficial effects of the present application are:

[0019] In this type of wire drawing and cooling device for steel strand production, through the configuration of a cooling component, a circulation component, and an installation component, when cooling of the steel strand is required, one end of the steel strand is simply passed through the inside of the cooling cylinder, and then the other end is wound around an external winding device. During the operation of the winding device, the steel strand moves synchronously. During this movement, the cooling component effectively cools the steel strand. After cooling the steel strand with cold water, the wastewater falls into the filter box. At this time, the circulation component starts operating, effectively transferring the filtered water from the filter box back to the cooling component. The water is discharged through the cooling components, and this cycle repeats continuously. This not only effectively cools the steel strands but also recycles water resources, thus significantly improving the overall environmental friendliness and practicality of the device. During the cooling process, moisture adheres to the exterior of the steel strands. At this point, the electric telescopic rod starts operating, moving the mounting plate and wiping cotton simultaneously. When the wiping cotton comes into contact with the exterior of the steel strands, it wipes away the moisture. The mounting components allow for easy disassembly and replacement of the wiping cotton by workers, further enhancing the overall practicality of the device and saving time and effort. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0021] Figure 2 This is a cross-sectional three-dimensional structural diagram of the fixing plate in this utility model;

[0022] Figure 3 This is a three-dimensional structural schematic diagram from one perspective of the present invention;

[0023] Figure 4 This is a cross-sectional three-dimensional structural diagram of the cooling cylinder in this utility model;

[0024] Figure 5 This is a cross-sectional three-dimensional structural diagram of the fixing sleeve in this utility model;

[0025] Figure 6 for Figure 2 Enlarged structural diagram of region A in the middle;

[0026] Figure 7 for Figure 4 A magnified structural diagram of region B in the middle;

[0027] Figure 8 for Figure 5 A magnified structural diagram of region C in the middle.

[0028] The meanings of the labels in the diagram are as follows:

[0029] 1, base; 2, cooling cylinder; 3, support plate; 4, fixing frame; 5, water storage cylinder; 6, connecting plate; 7, filter box; 8, L-shaped plate; 9, electric telescopic rod; 10, mounting frame; 11, wiping cotton; 12, fixing sleeve; 13, filter screen; 14, plug-in plate; 15, fixed plate; 16, water pump; 17, branch pipe; 18, refrigerator; 19, electromagnetic valve; 20, drain pipe; 21, circulating water pump; 22, slide rod; 23, abutting plate; 24, return spring; 25, side plate; 26, outer plate; 27, plug rod; 28, fixed frame; 29, mounting ring; 30, annular pipe; 31, shower head; 32, mounting plate; 33, fixed rod; 34, abutting disc; 35, abutting spring; 36, air heater. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] Please refer to Figure 1 - Figure 8 As shown in the figure, the embodiment provides a wire drawing cooling device for steel strand production, which comprises a base 1 and further comprises:

[0032] A cooling cylinder 2 is located above the base 1, and the upper surface of the base 1 is symmetrically provided with support plates 3, and the outer portions of the two support plates 3 are fixedly connected with the outer portion of the cooling cylinder 2;

[0033] A cooling assembly is located above the cooling cylinder 2;

[0034] A circulating assembly is located above the base 1;

[0035] L-shaped plates 8 are symmetrically arranged on the outer portion of the cooling cylinder 2, and the inner portions of the two L-shaped plates 8 are each provided with a mounting hole for mounting an electric telescopic rod 9, and the telescopic ends of the two electric telescopic rods 9 are each fixedly connected with a mounting frame 10, and the inner portion of each mounting frame 10 is provided with a mounting plate 32, and the outer portion of each mounting plate 32 is fixedly connected with wiping cotton 11;

[0036] A mounting assembly is symmetrically arranged on the outer portion of the mounting frame 10.

[0037] The working principle is as follows: when the steel strand needs to be cooled, only one end of the steel strand is drawn out from the inside of the cooling cylinder 2, and the other end of the steel strand is wound on the external winding device. During the operation of the winding device, the steel strand moves synchronously. The cooling assembly can effectively cool the steel strand during movement. After the steel strand is cooled by cold water, the waste water falls into the inside of the filter box 7. At this time, the circulating assembly starts to operate. The circulating assembly can effectively transmit the filtered water in the filter box 7 to the inside of the cooling assembly again, and then discharge it through the cooling assembly. Such circulation not only effectively cools the steel strand, but also recycles water resources, thereby effectively improving the environmental protection and practicality of the device. During the cooling process of the steel strand, water is adhered to the outside of the steel strand. At this time, the electric telescopic rod 9 starts to operate, and the electric telescopic rod 9 drives the mounting plate 32 and the wiping cotton 11 to move synchronously. When the wiping cotton 11 contacts the outside of the steel strand, the water on the outside of the steel strand can be wiped off by the wiping cotton 11. Through the arrangement of the mounting assembly, the wiping cotton 11 can be easily disassembled and replaced by the worker, thereby further improving the practicality of the device and saving time and effort.

[0038] In order to effectively cool the steel strand, the cooling assembly comprises a water storage cylinder 5 above the cooling cylinder 2, the upper surfaces of the two support plates 3 are fixedly connected with the fixed frame 4, the outside of the water storage cylinder 5 is fixedly connected with the inside of the fixed frame 4, the outside of the fixed frame 4 is fixedly connected with the connecting plate 6, the upper surface of the connecting plate 6 is fixedly connected with the water pump 16, the inner wall of the cooling cylinder 2 is fixedly connected with a plurality of mounting rings 29, the inside of each mounting ring 29 is fixedly connected with an annular pipe 30, a plurality of annular pipes 30 are communicated with spray heads 31 at equal intervals, the water inlet end of the water pump 16 is communicated with the bottom of the water storage cylinder 5 through a pipeline, the water outlet end of the water pump 16 is communicated with the inside of the plurality of annular pipes 30 through a branch pipe 17, and a drain hole is formed in the bottom of the cooling cylinder 2. When the steel strand needs to be cooled, only cold water is added to the inside of the water storage cylinder 5. At this time, the water pump 16 starts to operate. The water pump 16 can effectively transmit the cold water in the water storage cylinder 5 to the inside of the branch pipe 17, and then to the inside of the annular pipe 30, and then sprayed out through the spray head 31. At this time, the steel strand can be effectively cooled by the cold water. The sprayed water falls into the inside of the filter box 7 for collection through the drain hole, thereby facilitating the recycling of water.

[0039] Considering that the water needs to be recycled when the steel strand is cooled, the circulating assembly comprises a filter box 7 fixedly connected between the two support plates 3, the inner wall of the filter box 7 is symmetrically provided with a refrigerator 18, the upper surface of the base 1 is fixedly connected with a circulating water pump 21, the water inlet end of the circulating water pump 21 is communicated with the bottom of the filter box 7 through a pipeline, the water outlet end of the circulating water pump 21 is communicated with the upper surface of the water storage cylinder 5 through a pipeline, and the bottom of the filter box 7 is communicated with a drain pipe 20 through an electromagnetic valve 19. When the water falls into the inside of the filter box 7 through the drain hole, the refrigerator 18 starts to operate, at this time, the refrigerator 18 can effectively cool the water in the filter box 7, when the water is cooled, the circulating water pump 21 starts to operate, at this time, the circulating water pump 21 will transmit the cold water in the filter box 7 to the inside of the water storage cylinder 5 through the pipeline again, and then discharge through the spray head 31, so as to circulate repeatedly, which not only can effectively cool the steel strand, but also can effectively recycle the water resources, so as to effectively improve the environmental protection and practicality of the device as a whole.

[0040] In order to effectively intercept and filter the impurities in the water, the inside of the filter box 7 is provided with a filter screen 13, the upper surface of the filter screen 13 is fixedly connected with a plurality of plug-in plates 14, the outer wall of the filter box 7 is symmetrically provided with a fixed frame 28 on both sides, the upper surface of the plurality of fixed frames 28 is provided with a guide groove for the plug-in plate 14 to move, the outer wall of the filter box 7 is fixedly connected with a fixed plate 15 on both sides, the inside of the fixed plate 15 is symmetrically provided with a sliding rod 22, the both ends of the sliding rod 22 are fixedly connected with the inner walls of the fixed plate 15 on both sides, the inside of the fixed plate 15 is provided with a contact plate 23, the inside of the contact plate 23 is provided with a guide groove for the sliding rod 22 to move, the outside of the sliding rod 22 is sleeved with a return spring 24, the return spring 24 is in contact between the contact plate 23 and the fixed plate 15, the outside of the contact plate 23 is fixedly connected with an outer plate 26 through a side plate 25, the opposite side of the two outer plates 26 is symmetrically provided with a plug rod 27, the inside of the fixed frame 28 and the plug-in plate 14 is provided with a guide groove for the plug rod 27 to move, when the impurities in the water need to be intercepted and filtered, the outer plate 26 is pulled first, at this time the outer plate 26 will drive the side plate 25 to move synchronously, the side plate 25 drives the contact plate 23 to move synchronously outside the sliding rod 22, in the process of moving the contact plate 23, the return spring 24 is extruded, the outer plate 26 drives the plug rod 27 to move synchronously, at this time the plug-in plate 14 is inserted into the inside of the fixed frame 28, then the outer plate 26 is released, at this time the return spring 24 resets, drives the contact plate 23 to move synchronously, the contact plate 23 drives the side plate 25 and the outer plate 26 to move synchronously, the outer plate 26 drives the plug rod 27 to move synchronously, when the plug rod 27 is inserted into the guide groove in the plug-in plate 14, the plug-in plate 14 and the fixed frame 28 can be fixed, at this time the filter screen 13 can be fixedly installed, so that the impurities in the water can be intercepted and filtered through the filter screen 13, effectively improving the circulating quality of the water.

[0041] In order to effectively fix and install the wiping cotton 11, the installation assembly comprises the fixing sleeve 12 symmetrically arranged outside the installation frame 10, the fixing sleeve 12 is internally provided with the fixing rod 33, one end of the fixing rod 33 is fixedly connected with the pull plate, the fixing rod 33 is externally fixedly connected with the abutting disc 34, the fixing rod 33 is externally sleeved with the abutting spring 35, the abutting spring 35 abuts between the abutting disc 34 and the fixing sleeve 12, the contact surfaces of the fixing sleeve 12 and the installation frame 10 are both provided with the guide groove for the movement of the fixing rod 33, the inside of the installation plate 32 is provided with the guide groove for the movement of the fixing rod 33, when the wiping cotton 11 needs to be fixed and installed, the pull plate is only pulled, at this time, the pull plate drives the fixing rod 33 to move synchronously, the fixing rod 33 drives the abutting disc 34 to move synchronously, in the movement process of the abutting disc 34, the abutting spring 35 is extruded, at this time, the installation plate 32 is inserted into the inside of the installation frame 10, and then the pull plate is released, at this time, the abutting spring 35 is reset, drives the abutting disc 34 and the fixing rod 33 to move synchronously, when the fixing rod 33 is inserted into the guide groove in the inside of the installation plate 32, the installation plate 32 and the installation frame 10 can be fixed, at this time, the wiping cotton 11 can be fixed and installed, and meanwhile, the wiping cotton 11 can be conveniently disassembled and replaced by the staff.

[0042] In addition, in order to further improve the drying effect of the steel strand, the upper surface of the cooling cylinder 2 is fixedly connected with the hot air machine 36, the air outlet end of the hot air machine 36 is communicated with the inside of the cooling cylinder 2 through a pipeline, in the process of cooling the steel strand, water is adhered to the outside of the steel strand, at this time, the hot air machine 36 starts to operate, the hot air machine 36 transmits hot air to the inside of the cooling cylinder 2 through the pipeline, so that the outside of the steel strand can be dried by the hot air, and the drying effect of the steel strand can be effectively improved.

[0043] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present application and do not limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A wire drawing and cooling device for steel strand production comprising a base (1), characterized in that, Also include: Cooling cylinder (2), located above the base (1), the upper surface of the base (1) is provided with support plate (3) symmetrically, the outer part of two support plates (3) is fixedly connected with the outer part of cooling cylinder (2); Cooling assembly, located above the cooling cylinder (2); Circulation assembly, located above the base (1); L-shaped plate (8) is symmetrically arranged on the outer part of the cooling cylinder (2), the inner part of two L-shaped plates (8) is provided with mounting hole for mounting electric telescopic rod (9), the telescopic end of two electric telescopic rods (9) is fixedly connected with mounting frame (10), the inner part of two mounting frames (10) is provided with mounting plate (32), the outer part of two mounting plates (32) is fixedly connected with wiping cotton (11); Mounting assembly, symmetrically arranged on the outer part of the mounting frame (10).

2. The wire drawing and cooling device for steel strand production according to claim 1, characterized in that: The cooling assembly comprises a water storage cylinder (5) located above the cooling cylinder (2), the upper surface of the two support plates (3) is fixedly connected with the fixed frame (4), the outer part of the water storage cylinder (5) is fixedly connected with the inner part of the fixed frame (4), the outer part of the fixed frame (4) is fixedly connected with the connecting plate (6), the upper surface of the connecting plate (6) is fixedly connected with the water pump (16), the inner wall of the cooling cylinder (2) is fixedly connected with a plurality of mounting rings (29), the inner part of a plurality of mounting rings (29) is fixedly connected with annular pipe (30), a plurality of annular pipes (30) are communicated with spray head (31) at equal intervals, the water inlet end of the water pump (16) is communicated with the bottom of the water storage cylinder (5) through pipeline, the water outlet end of the water pump (16) is communicated with the inner part of a plurality of annular pipes (30) through branch pipe (17), and the bottom of the cooling cylinder (2) is provided with drain hole.

3. The wire drawing and cooling device for steel strand production according to claim 2, characterized in that: The circulation assembly comprises a filter box (7) fixedly connected between the two support plates (3), the inner wall of the filter box (7) is symmetrically provided with refrigerators (18), the upper surface of the base (1) is fixedly connected with circulating water pump (21), the water inlet end of the circulating water pump (21) is communicated with the bottom of the filter box (7) through pipeline, the water outlet end of the circulating water pump (21) is communicated with the upper surface of the water storage cylinder (5) through pipeline, and the bottom of the filter box (7) is communicated with drain pipe (20) through electromagnetic valve (19).

4. The wire drawing and cooling device for steel strand production according to claim 3, characterized in that: The inside of the filter box (7) is provided with a filter screen (13), the upper surface of the filter screen (13) is fixedly connected with a plurality of plug-in plates (14), the outer wall of the filter box (7) is symmetrically provided with a fixed frame (28) on both sides, the upper surface of a plurality of fixed frames (28) is provided with a guide groove for the plug-in plate (14) to move, the outer wall of the filter box (7) is fixedly connected with a fixed plate (15) on both sides, the inside of the fixed plate (15) is symmetrically provided with a sliding rod (22), both ends of the sliding rod (22) are fixedly connected with the inner walls of the fixed plate (15) on both sides, the inside of the fixed plate (15) is provided with a contact plate (23), the inside of the contact plate (23) is provided with a guide groove for the sliding rod (22) to move, the outside of the sliding rod (22) is sleeved with a reset spring (24), the reset spring (24) is in contact between the contact plate (23) and the fixed plate (15), the outside of the contact plate (23) is fixedly connected with an outer plate (26) through a side plate (25), the opposite side of the two outer plates (26) is symmetrically provided with a plug rod (27), the inside of the fixed frame (28) and the plug-in plate (14) is provided with a guide groove for the plug rod (27) to move.

5. The wire drawing and cooling device for steel strand production according to claim 1, characterized in that: The mounting assembly comprises a fixed sleeve (12) symmetrically arranged outside the mounting frame (10), the inside of the fixed sleeve (12) is provided with a fixed rod (33), one end of the fixed rod (33) is fixedly connected with a pull plate, the outside of the fixed rod (33) is fixedly connected with a contact disc (34), the outside of the fixed rod (33) is sleeved with a contact spring (35), the contact spring (35) is in contact between the contact disc (34) and the fixed sleeve (12), the contact surface of the fixed sleeve (12) and the mounting frame (10) is provided with a guide groove for the fixed rod (33) to move, the inside of the mounting plate (32) is provided with a guide groove for the fixed rod (33) to move.

6. A wire drawing and cooling device for a steel strand production as claimed in claim 1 characterized in that: The upper surface of the cooling cylinder (2) is fixedly connected with a hot air fan (36), the air outlet end of the hot air fan (36) is connected with the inside of the cooling cylinder (2) through a pipeline.

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