A cooling type negative pressure device and a cooling method for cable manufacturing

Abstract

The present invention discloses a cooling type negative pressure device for cable manufacturing, which relates to the technical field of cable manufacturing equipment and includes: a heat absorption and external release mechanism and an air cooling mechanism. By introducing a refrigerant into the heat absorption and external release mechanism, the refrigerant absorbs heat in the heat absorption pipe. This not only facilitates the refrigerant to fully absorb heat in the heat absorption pipe that crosses the air suction pipe in all directions, but also through this all-round heat absorption method, the refrigerant can be quickly vaporized. The vaporized refrigerant discharges the absorbed high-temperature heat from the outlet end through the exhaust passage, reducing the temperature rise in the heat absorption pipe and further enhancing the heat absorption effect of the refrigerant, continuously and effectively cooling the high-temperature gas. Moreover, while the vaporized refrigerant drives the impeller to rotate, it also drives the fan in the air cooling mechanism to rotate, accelerating the rapid flow of air, so that the rapidly flowing air further cools the high-temperature gas. This solves the problem that the high-temperature gas cannot be cooled during the vacuum pumping process, resulting in unstable negative pressure and affecting the quality of the cable.

Description

Technical Field

[0001] The present invention relates to the technical field of cable manufacturing equipment, and particularly relates to a cooling type negative pressure device for cable manufacturing. Background Art

[0002] The extruder is a commonly used device for cable manufacturing. When the conductor or cable core passes through the head of the extruder, the extruder processes the plastic into a high-temperature viscous flow state and continuously extrudes it towards the head, extruding and covering a plastic insulating layer or outer sheath with a certain thickness on the conductor or cable core to form a cable product. During the production process of the cable, it is necessary to adjust the covering angle of the insulating material through an externally provided negative pressure device to adjust the adhesion of the product.

[0003] However, the temperature inside the head of the extruder is usually around 350 to 400 degrees, which is extremely high. During the vacuum pumping process, it is impossible to cool the extracted high-temperature gas. After a long time of extracting high-temperature gas, the pipeline components and negative pressure device used to extract the high-temperature air are easily damaged, reducing the service life of the equipment. Most importantly, during normal use, if no cooling is carried out, it will cause unstable negative pressure, affecting the quality of the cable product. Summary of the Invention

[0004] One of the purposes of the present invention is to solve the problem in the prior art that during the vacuum pumping process, it is impossible to cool the extracted high-temperature gas, resulting in unstable negative pressure and affecting the quality of the cable product.

[0005] Another purpose of the present invention is to provide a cooling method for cable manufacturing.

[0006] To achieve the above purpose, the present invention adopts the following technical solution: A cooling type negative pressure device for cable manufacturing, including a head structure and a vacuum pumping mechanism. The front end of the head structure has a wire passing tube, the vacuum pumping mechanism has an air suction sleeve connected to the wire passing tube, and the vacuum pumping mechanism also has an air suction pipe connected to the air suction sleeve. Among them, the following are sequentially provided on the air suction pipe: a heat absorption and heat dissipation mechanism and an air cooling mechanism.

[0007] The heat absorption and heat dissipation mechanism has: a refrigerant inlet end, a heat absorption tube, a plug, an exhaust passage, an impeller, and an outlet end.

[0008] One end of the heat absorption tube is connected to the refrigerant inlet end, the heat absorption tube surrounds or passes through the air suction pipe, the plug is movably arranged at the other end of the heat absorption tube, and a return spring is provided between the plug and the heat absorption tube.

[0009] The exhaust passage is connected to the heat absorption tube, the plug blocks the connection between the exhaust passage and the heat absorption tube, and the outlet end is connected to the tempering passage. The impeller is movably installed in the exhaust passage.

[0010] The air-cooling mechanism is arranged at the lower end of the heat absorption and heat release mechanism, and the air-cooling mechanism has: an air-cooling cavity, a passive gear, a fan, an air inlet, and an air outlet.

[0011] The suction pipe passes through the air-cooling cavity, the passive gear meshes with the driving gear under the impeller, and the fan is connected to the passive gear. The air inlet is arranged at the upper end of the fan and communicates with the air-cooling cavity, and the air outlet is arranged at the lower end of the fan and communicates with the air-cooling cavity.

[0012] In the above technical solution, when the conductor or cable core passes through the pipe of the head structure in the embodiment of the present invention, the high-temperature gas in the pipe is pumped out by the vacuum pumping mechanism, so that the high-temperature gas enters the suction sleeve and is extracted by the suction pipe.

[0013] While the high-temperature gas flows through the suction pipe, the refrigerant is introduced into the refrigerant inlet end of the heat absorption and heat release mechanism, so that the refrigerant enters the heat absorption pipe crossing the suction pipe through the refrigerant inlet end. When the high-temperature gas contacts the heat absorption pipe, the refrigerant in the heat absorption pipe absorbs heat from the high-temperature gas and vaporizes. The vaporized refrigerant boosts pressure in the heat absorption pipe to push the sealing plug, opening the connection between the exhaust passage and the heat absorption pipe, so that the vaporized refrigerant flows to the exhaust passage to drive the impeller to rotate. Finally, the vaporized refrigerant discharges the heat through the outlet end of the heat release mechanism;

[0014] Wherein, while the impeller rotates, it drives the driving gear to rotate, so that the driving gear drives the passive gear in the air-cooling mechanism to rotate. While the passive gear rotates, it drives the fan to rotate to suck the air flowing out of the air inlet at the upper end of the air-cooling cavity and quickly blows the air to the suction pipe at the lower end of the air-cooling cavity, accelerating the rapid flow of the air and strengthening the heat exchange of the air with the high-temperature gas in the suction pipe.

[0015] Further, in the embodiment of the present invention, a movable and rotatable blade is arranged at the air outlet, the blade blocks the air outlet, and the blade rotates by itself to open the connection between the air outlet and the outside. Therefore, the air at the lower end of the air-cooling cavity is boosted under the action of the fan, and after pushing the blade to rotate and open the connection between the air outlet and the outside, the heat-exchanged air can finally be discharged from the air-cooling cavity.

[0016] Or the air outlet is arranged in the suction pipe, and the negative pressure of the suction pipe prompts the blade to open, so that the air enters the suction pipe and mixes with the high-temperature gas to reduce the temperature of the high-temperature gas.

[0017] Further, in the embodiment of the present invention, the heat absorption pipe is a metal pipe, and the pipe wall is 2 mm - 6 mm.

[0018] Further, in the embodiment of the present invention, the air-cooling mechanism further has a stabilizing frame, and the passive gear is rotatably connected under the stabilizing frame.

[0019] Further, in the embodiment of the present invention, the cooling type negative pressure device for cable manufacturing further includes a negative pressure tank, which is connected to the suction pipe, and a pressure regulating valve is also provided on the suction pipe.

[0020] Furthermore, in the embodiment of the present invention, a negative pressure pump is provided at the side end of the negative pressure tank, and the negative pressure pump is used to extract air from the negative pressure tank.

[0021] Furthermore, in the embodiment of the present invention, a filter is provided between the negative pressure pump and the negative pressure tank, and the filter connects the negative pressure pump and the negative pressure tank.

[0022] Furthermore, in the embodiment of the present invention, one end of the filter is connected to the negative pressure tank through a connecting pipe, and the other end of the filter is connected to the negative pressure pump through a negative pressure pipe.

[0023] Further, in the embodiment of the present invention, a water cooling mechanism is provided at the lower end of the air cooling mechanism. Since the circulating water mode adopted by the water cooling mechanism is not easy to dissipate heat, it is used for the third-step cooling treatment. The water cooling mechanism has: a water inlet, an upper water cooling cavity, heat-absorbing steel balls, a lower water cooling cavity, and a water outlet.

[0024] The water inlet is connected to the left end of the upper water cooling cavity. The lower water cooling cavity is located below the upper water cooling cavity. The right end of the lower water cooling cavity is connected to the right end of the upper water cooling cavity. The heat-absorbing steel balls are movably arranged in the upper water cooling cavity and the lower water cooling cavity. The heat-absorbing steel balls are smaller than the space sizes of the upper water cooling cavity and the lower water cooling cavity. The water outlet is connected to the left end of the lower water cooling cavity.

[0025] Cooling water is introduced from the water inlet, so that the cooling water enters the upper water cooling cavity. First, the heat-absorbing steel balls (with fast heat absorption) in the upper water cooling cavity and the lower water cooling cavity contact the suction pipe to absorb heat from the high-temperature gas in the suction pipe. After the cooling water enters the upper water cooling cavity and the lower water cooling cavity, not only the outer peripheral part of the cooling water can contact the suction pipe to cool the high-temperature gas, but also the central part of the cooling water contacts the heat-absorbing steel balls to cool the heat-absorbing steel balls and push the heat-absorbing steel balls to roll around the upper water cooling cavity and the lower water cooling cavity. The cooling water flows along the upper water cooling cavity and the lower water cooling cavity and then is discharged from the water outlet. Through the mutual cooperation of the cooling water and the heat-absorbing steel balls, the high-temperature gas in the flow is effectively cooled, avoiding the phenomenon of unstable negative pressure and affecting the quality of the cable products.

[0026] The beneficial effects of the present invention are:

[0027] In the present invention, a refrigerant is introduced into the heat absorption and heat release mechanism, enabling the refrigerant to absorb heat in the heat absorption tubes. This not only facilitates the refrigerant to fully absorb heat in all directions in the heat absorption tubes crossing the suction pipe, but also through this all-round heat absorption method, the refrigerant can quickly vaporize. The vaporized refrigerant discharges the absorbed high-temperature heat through the exhaust channel from the outlet end, reducing the temperature rise in the heat absorption tubes, further enhancing the heat absorption effect of the refrigerant, and continuously and effectively cooling the high-temperature gas. Moreover, while the vaporized refrigerant drives the impeller to rotate, it also drives the fan in the air-cooling mechanism to rotate, accelerating the rapid flow of air, and enabling the rapidly flowing air to further cool the high-temperature gas. This solves the problem in the prior art that the high-temperature gas extracted during the vacuum pumping process cannot be cooled, resulting in unstable negative pressure and affecting the quality of cable products.

[0028] To achieve the second above-mentioned object, the present invention adopts the following technical solution: A cooling method for cable manufacturing, comprising the following steps:

[0029] When the conductor or cable core passes through the pipe passing through the head structure, the high-temperature gas in the pipe passing through is extracted by the vacuum pumping mechanism, enabling the high-temperature gas to enter the suction sleeve and be extracted by the suction pipe;

[0030] While the suction pipe is flowing high-temperature gas, a refrigerant is introduced into the refrigerant inlet end of the heat absorption and heat release mechanism, enabling the refrigerant to enter the heat absorption tubes crossing the suction pipe through the refrigerant inlet end. When the high-temperature gas contacts the heat absorption tubes, the refrigerant in the heat absorption tubes absorbs heat from the high-temperature gas and vaporizes. The vaporized refrigerant boosts pressure in the heat absorption tubes to push the sealing plug, opening the connection between the exhaust channel and the heat absorption tubes, enabling the vaporized refrigerant to flow to the exhaust channel to drive the impeller to rotate, and finally enabling the vaporized refrigerant to discharge the heat through the outlet end of the heat release mechanism;

[0031] Among them, while the impeller rotates, it drives the driving gear to rotate, so that the driving gear drives the driven gear in the air-cooling mechanism to rotate. While the driven gear rotates, it drives the fan to rotate to suck the air at the upper end of the air-cooling chamber and quickly blow the air to the suction pipe at the lower end of the air-cooling chamber, accelerating the rapid flow of air and enhancing the heat exchange of the air with the high-temperature gas in the suction pipe;

[0032] In addition, cold air is introduced into the air inlet at the upper end of the air-cooling chamber, and at the same time, a sealed movable blade is provided at the air outlet at the lower end of the air-cooling chamber, which is beneficial to ensuring the air temperature and reducing the influence of the workshop environment;

[0033] Therefore, the air at the lower end of the air-cooling chamber is boosted under the action of the fan, pushing the blade to rotate to open the connection between the air outlet and the outside, and finally the heat-exchanged air will be discharged from the air-cooling chamber;

[0034] Or the air outlet is arranged in the suction pipe, and the negative pressure of the suction pipe is used to promote the blade to open, enabling the air to enter the suction pipe and mix with the high-temperature gas to reduce the temperature of the high-temperature gas.

[0035] Further, in the embodiment of the present invention, the pressure generated by the suction pipe for extracting high-temperature gas is provided by the negative pressure tank, and the pressure of the suction pipe can also be adjusted through the pressure control valve on the suction pipe, and finally the flow rate of the high-temperature gas sucked by the suction pipe is controlled, which is convenient for the heat absorption and heat dissipation mechanism and the air-cooling mechanism to effectively cool the high-temperature gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic plan view of the cooling type negative pressure device for cable manufacturing in the embodiment of the present invention.

[0037] Figure 2 It is a schematic structural view of the vacuum pumping mechanism in the embodiment of the present invention.

[0038] Figure 3 It is a schematic structural view of the heat absorption and heat dissipation mechanism and the air-cooling mechanism in the embodiment of the present invention.

[0039] Figure 4 It is a schematic structural view of the heat absorption and heat dissipation mechanism in the embodiment of the present invention.

[0040] Figure 5 It is a schematic structural view of the air-cooling mechanism in the embodiment of the present invention.

[0041] Figure 6 It is a schematic view of the movement effect of the heat absorption and heat dissipation mechanism in the embodiment of the present invention.

[0042] Figure 7 It is a schematic view of the movement effect of the air-cooling mechanism in the embodiment of the present invention.

[0043] Figure 8 It is a schematic structural view of the water-cooling mechanism in the embodiment of the present invention.

[0044] In the drawings

[0045] 10. Head structure 11. Cable passing pipe

[0046] 20. Vacuum pumping mechanism 21. Suction sleeve 22. Suction pipe

[0047] 30. Heat absorption and heat dissipation mechanism 31. Refrigerant inlet end 32. Heat absorption pipe

[0048] 33. Plug 34. Return spring 35. Exhaust passage

[0049] 36. Impeller 361. Driving gear 37. Outlet end

[0050] 40. Air-cooling mechanism 41. Air-cooling cavity 42. Driven gear

[0051] 43. Fan 44. Air inlet 45. Air outlet

[0052] 46. Stabilizer

[0053] 50. Negative pressure tank, 51. Connecting pipe, 60. Pressure regulating valve

[0054] 70. Negative pressure pump, 71. Negative pressure pipe, 80. Filter

[0055] 90. Water cooling mechanism, 91. Water inlet, 92. Upper water cooling chamber

[0056] 93. Heat-absorbing steel balls, 94. Lower water cooling chamber, 95. Water outlet Detailed implementation manners

[0057] In order to clearly and completely describe the objectives, technical solutions and advantages of the present invention, the following further elaborates on the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only a part of the embodiments of the present invention, rather than all of the embodiments, and are merely used to explain the embodiments of the present invention, rather than limiting the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0058] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0059] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] For the purposes of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are set forth to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, well-known cable manufacturing cooling methods and structures are not described in detail to avoid unnecessarily obscuring these embodiments. Additionally, all embodiments can be used in combination with each other.

[0061] Embodiment 1:

[0062] A cooling type negative pressure device for cable manufacturing, as Figure 1 、 2 shown, includes a head structure 10 and a vacuum pumping mechanism 20. The front end of the head structure 10 has a wire passing tube 11. The vacuum pumping mechanism 20 has an air suction sleeve 21 that is connected to the wire passing tube 11. The vacuum pumping mechanism 20 also has an air suction pipe 22, and the air suction pipe 22 is connected to the air suction sleeve 21. Among them, the following are successively provided on the air suction pipe 22: a heat absorption and heat release mechanism 30 and an air cooling mechanism 40.

[0063] As Figure 3 、 4 shown, the heat absorption and heat release mechanism 30 has: a refrigerant inlet end 31, a heat absorption tube 32, a plug 33, an exhaust passage 35, an impeller 36, and an outlet end 37.

[0064] One end of the heat absorption tube 32 is connected to the refrigerant inlet end 31. The heat absorption tube 32 surrounds or passes through the air suction pipe 22. The plug 33 is movably arranged at the other end of the heat absorption tube 32, and there is a return spring 34 between the plug 33 and the heat absorption tube 32.

[0065] The exhaust passage 35 is connected to the heat absorption tube 32. The plug 33 blocks the connection between the exhaust passage 35 and the heat absorption tube 32. The outlet end 37 is connected to the tempering passage. The impeller 36 is movably installed in the exhaust passage 35.

[0066] As Figure 3 、 5 shown, the air cooling mechanism 40 is arranged at the lower end of the heat absorption and heat release mechanism 30. The air cooling mechanism 40 has: an air cooling chamber 41, a passive gear 42, a fan 43, an air inlet 44, and an air outlet 45.

[0067] The air suction pipe 22 passes through the air cooling chamber 41. The passive gear 42 meshes with the driving gear 361 under the impeller 36, and the fan 43 is connected to the passive gear 42. The air inlet 44 is arranged at the upper end of the fan 43 and is connected to the air cooling chamber 41. The air outlet 45 is arranged at the lower end of the fan 43 and is connected to the air cooling chamber 41.

[0068] Implementation steps: When the conductor or cable core passes through the pipe 11 of the head structure 10, the high-temperature gas in the pipe 11 is extracted through the vacuum pumping mechanism 20, so that the high-temperature gas enters the suction sleeve 21 and is extracted by the suction pipe 22.

[0069] As Figure 6 shown, while the suction pipe 22 is flowing high-temperature gas, the refrigerant is introduced into the refrigerant inlet end 31 of the heat absorption and heat release mechanism 30, so that the refrigerant enters the heat absorption pipe 32 passing through the suction pipe 22 through the refrigerant inlet end 31. When the high-temperature gas contacts the heat absorption pipe 32, the refrigerant in the heat absorption pipe 32 absorbs heat from the high-temperature gas and vaporizes. The vaporized refrigerant boosts pressure in the heat absorption pipe 32 to push the plug 33, opening the connection between the exhaust passage 35 and the heat absorption pipe 32, so that the vaporized refrigerant flows to the exhaust passage 35 to push the impeller 36 to rotate. Finally, the vaporized refrigerant discharges the heat through the outlet end 37 of the heat release mechanism;

[0070] Among them, as Figure 7 shown, while the impeller 36 rotates, it drives the driving gear 361 to rotate, so that the driving gear 361 drives the driven gear 42 in the air cooling mechanism 40 to rotate. While the driven gear 42 rotates, it drives the fan 43 to rotate to suck the air flowing out of the air inlet 44 at the upper end of the air cooling cavity 41 and quickly blows the air to the suction pipe 22 at the lower end of the air cooling cavity 41, accelerating the rapid flow of air and strengthening the heat exchange of the air with the high-temperature gas in the suction pipe 22.

[0071] In the present invention, by introducing the refrigerant into the heat absorption and heat release mechanism 30, the refrigerant absorbs heat in the heat absorption pipe 32. This is not only conducive to the refrigerant fully absorbing heat in all directions in the heat absorption pipe 32 passing through the suction pipe 22, but also through this all-round heat absorption method, the refrigerant can be quickly vaporized. The vaporized refrigerant discharges the absorbed high-temperature heat through the exhaust passage 35 from the outlet end 37, reducing the temperature rise in the heat absorption pipe 32, further strengthening the heat absorption effect of the refrigerant, and continuously and effectively cooling the high-temperature gas. Moreover, while the vaporized refrigerant pushes the impeller 36 to rotate, it also drives the fan 43 in the air cooling mechanism 40 to rotate, accelerating the rapid flow of air, so that the rapidly flowing air further cools the high-temperature gas. This solves the problem in the prior art that the high-temperature gas extracted during the vacuum pumping process cannot be cooled, resulting in unstable negative pressure and affecting the quality of the cable products.

[0072] Preferably, as Figure 5 shown, there are movable and rotatable blades at the air outlet 45. The blades block the air outlet 45, and the blades rotate by themselves to open the connection between the air outlet 45 and the outside. Therefore, the air at the lower end of the air cooling cavity 41 is boosted under the action of the fan 43. After pushing the blades to rotate and open the connection between the air outlet 45 and the outside, the heat-exchanged air can finally be discharged from the air cooling cavity 41.

[0073] Alternatively, the air outlet 45 is arranged in the suction pipe 22. The negative pressure in the suction pipe 22 promotes the opening of the blade, allowing air to enter the suction pipe 22 and mix with the high-temperature gas, thereby reducing the temperature of the high-temperature gas.

[0074] Preferably, the heat absorption pipe 32 is a metal pipe with a pipe wall thickness of 2 mm - 6 mm.

[0075] Preferably, as Figure 5 shown, the air cooling mechanism 40 further has a stabilizing frame 46, and the passive gear 42 is rotatably connected under the stabilizing frame 46.

[0076] Preferably, as Figure 1 shown, the cable manufacturing cooling negative pressure device further includes a negative pressure tank 50. The negative pressure tank 50 is connected to the suction pipe 22, and a pressure regulating valve 60 is also provided on the suction pipe 22.

[0077] More preferably, as Figure 1 shown, a negative pressure pump 70 is provided at the side end of the negative pressure tank 50. The negative pressure pump 70 is used to extract air from the negative pressure tank 50.

[0078] More preferably, as Figure 1 shown, a filter 80 is provided between the negative pressure pump 70 and the negative pressure tank 50. The filter 80 connects the negative pressure pump 70 and the negative pressure tank 50.

[0079] More preferably, as Figure 1 shown, one end of the filter 80 is connected to the negative pressure tank 50 through a connecting pipe 51, and the other end of the filter 80 is connected to the negative pressure pump 70 through a negative pressure pipe 71.

[0080] Embodiment 2:

[0081] A cable manufacturing cooling negative pressure device has the same characteristic structure as that in Embodiment 1. Among them, as Figure 2 、 8 shown, a water cooling mechanism 90 is provided at the lower end of the air cooling mechanism 40. Due to the circulating water mode adopted by the water cooling mechanism 90, it is not easy to dissipate heat, so it is used for the third-step cooling treatment. The water cooling mechanism 90 has: a water inlet 91, an upper water cooling chamber 92, heat absorption steel balls 93, a lower water cooling chamber 94, and a water outlet 95.

[0082] The water inlet 91 is connected to the left end of the upper water cooling chamber 92. The lower water cooling chamber 94 is located below the upper water cooling chamber 92. The right end of the lower water cooling chamber 94 is connected to the right end of the upper water cooling chamber 92. The heat absorption steel balls 93 are movably arranged in the upper water cooling chamber 92 and the lower water cooling chamber 94. The heat absorption steel balls 93 are smaller than the space sizes of the upper water cooling chamber 92 and the lower water cooling chamber 94. The water outlet 95 is connected to the left end of the lower water cooling chamber 94.

[0083] Cooling water is introduced from the water inlet 91, so that the cooling water enters the upper water cooling cavity 92. First, the heat-absorbing steel balls 93 (with fast heat absorption) in the upper water cooling cavity 92 and the lower water cooling cavity 94 come into contact with the air suction pipe 22, absorbing the heat of the high-temperature gas in the air suction pipe 22. After the cooling water enters the upper water cooling cavity 92 and the lower water cooling cavity 94, not only the outer peripheral part of the cooling water can come into contact with the air suction pipe 22 to cool the high-temperature gas, but also the central part of the cooling water comes into contact with the heat-absorbing steel balls 93, cooling the heat-absorbing steel balls 93 and pushing the heat-absorbing steel balls 93 to roll around the upper water cooling cavity 92 and the lower water cooling cavity 94. The cooling water flows along the upper water cooling cavity 92 and the lower water cooling cavity 94 and then is discharged from the water outlet 95. Through the mutual cooperation of the cooling water and the heat-absorbing steel balls 93, the high-temperature gas in the flow is effectively cooled, avoiding the occurrence of negative pressure instability and affecting the quality of the cable products.

[0084] Embodiment 3:

[0085] A cooling method for cable manufacturing includes the following steps:

[0086] When the conductor or cable core passes through the pipe 11 of the head structure 10, the high-temperature gas in the pipe 11 is extracted by the vacuum pumping mechanism 20, so that the high-temperature gas enters the suction sleeve 21 and is extracted by the air suction pipe 22;

[0087] While the high-temperature gas flows in the air suction pipe 22, the refrigerant is introduced into the refrigerant inlet end 31 of the heat absorption and heat release mechanism 30, so that the refrigerant enters the heat absorption pipe 32 crossing the air suction pipe 22 through the refrigerant inlet end 31. When the high-temperature gas comes into contact with the heat absorption pipe 32, the refrigerant in the heat absorption pipe 32 absorbs the heat of the high-temperature gas and vaporizes. The vaporized refrigerant boosts the pressure in the heat absorption pipe 32 and pushes the sealing plug 33 to open the connection between the exhaust passage 35 and the heat absorption pipe 32, so that the vaporized refrigerant flows to the exhaust passage 35 and pushes the impeller 36 to rotate. Finally, the vaporized refrigerant discharges the heat through the outlet end 37 of the heat release mechanism;

[0088] Among them, while the impeller 36 rotates, it drives the driving gear 361 to rotate, so that the driving gear 361 drives the driven gear 42 in the air cooling mechanism 40 to rotate. While the driven gear 42 rotates, it drives the fan 43 to rotate to suck the air at the upper end of the air cooling cavity 41 and quickly blow the air to the air suction pipe 22 at the lower end of the air cooling cavity 41, accelerating the rapid flow of the air and strengthening the heat exchange of the air with the high-temperature gas in the air suction pipe 22;

[0089] In addition, cold air is introduced into the air inlet 44 at the upper end of the air cooling cavity 41, and at the same time, a sealed movable blade is arranged at the air outlet 45 at the lower end of the air cooling cavity 41, which is beneficial to ensuring the air temperature and reducing the influence of the workshop environment;

[0090] Therefore, the air at the lower end of the air-cooling chamber 41 is pressurized under the action of the fan 43. After the blades are pushed to rotate to open the connection between the air outlet 45 and the outside, the heat-exchanged air will finally be discharged from the air-cooling chamber 41.

[0091] Alternatively, the air outlet 45 is arranged in the suction pipe 22. The negative pressure in the suction pipe 22 causes the blades to open, allowing air to enter the suction pipe 22 and mix with the high-temperature gas to reduce the temperature of the high-temperature gas.

[0092] Preferably, the pressure generated by the extraction of the high-temperature gas by the suction pipe 22 is provided by the negative pressure tank 50, and the pressure regulating valve 60 on the suction pipe 22 can also adjust the pressure of the suction pipe 22, finally controlling the size of the flow rate of the high-temperature gas sucked by the suction pipe 22, which is convenient for the heat absorption and heat dissipation mechanism 30 and the air-cooling mechanism 40 to effectively cool the high-temperature gas.

[0093] Although the above describes the illustrative specific embodiments of the present invention for the convenience of those skilled in the art to understand the present invention, the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention defined and determined by the appended claims, all inventions made using the concept of the present invention are within the scope of protection.

Claims

1. A cooling negative pressure device for cable manufacturing, comprising a head structure and a vacuum pumping mechanism. The front end of the head structure has a wire passing tube, and the suction sleeve of the vacuum pumping mechanism is communicated with the wire passing tube. The vacuum pumping mechanism also has an air suction pipe, and the air suction pipe is communicated with the suction sleeve. Among them, The suction pipe is successively provided with: A heat absorption and heat release mechanism, which has: A refrigerant inlet end; A heat absorption pipe, one end of the heat absorption pipe is communicated with the refrigerant inlet end, and the heat absorption pipe surrounds or passes through the suction pipe; A plug, the plug is movably arranged at the other end of the heat absorption pipe, and there is a return spring between the plug and the heat absorption pipe; An exhaust passage, the exhaust passage is communicated with the heat absorption pipe, and the plug blocks the communication between the exhaust passage and the heat absorption pipe; An impeller, the impeller is movably installed in the exhaust passage; An outlet end, the outlet end is communicated with the exhaust passage; An air cooling mechanism, the air cooling mechanism is arranged at the lower end of the heat absorption and heat release mechanism, and the air cooling mechanism has: An air cooling cavity, the suction pipe passes through the air cooling cavity; A driven gear, the driven gear meshes with the driving gear under the impeller; A fan, the fan is connected with the driven gear; An air inlet, the air inlet is arranged at the upper end of the fan and is communicated with the air cooling cavity; An air outlet, the air outlet is arranged at the lower end of the fan and is communicated with the air cooling cavity.

2. The cooling type negative pressure device for cable manufacturing according to claim 1, wherein, A movable and rotatable blade is arranged at the air outlet, the blade blocks the air outlet, and the blade rotates by itself to open the communication between the air outlet and the outside.

3. The cooling type negative pressure device for cable manufacturing according to claim 1, wherein, The heat absorption pipe is a metal pipe, and the pipe wall is 2 mm - 6 mm.

4. The cooling type negative pressure device for cable manufacturing according to claim 1, wherein, The air cooling mechanism also has a stabilizing frame, and the driven gear is rotatably connected under the stabilizing frame.

5. The cooling negative pressure device for cable manufacturing according to claim 1, wherein, The cable manufacturing cooling type negative pressure device further includes a negative pressure tank, the negative pressure tank is connected with the suction pipe, and a pressure regulating valve is also arranged on the suction pipe.

6. The cooling negative pressure device for cable manufacturing according to claim 5, wherein, A negative pressure pump is arranged at the side end of the negative pressure tank, and the negative pressure pump is used to extract air from the negative pressure tank.

7. The cooling negative pressure device for cable manufacturing according to claim 6, wherein, A filter is arranged between the negative pressure pump and the negative pressure tank, and the filter communicates the negative pressure pump and the negative pressure tank.

8. The cooling type negative pressure device for cable manufacturing according to claim 7, wherein, The negative pressure tank is communicated with one end of the filter through a connecting pipe, and the negative pressure pump is communicated with the other end of the filter through a negative pressure pipe.

9. A cable manufacturing cooling method, the cable manufacturing cooling method is based on the cable manufacturing cooling type negative pressure device according to any one of the above claims 1 - 8, and the cable manufacturing cooling method includes the following steps: When the conductor or cable core passes through the wire passing pipe of the head structure, the high-temperature gas in the wire passing pipe is extracted through the vacuum pumping mechanism, so that the high-temperature gas enters the suction sleeve and is extracted by the suction pipe; While the high-temperature gas flows in the suction pipe, the refrigerant is introduced into the refrigerant inlet end of the heat absorption and heat release mechanism, so that the refrigerant enters the heat absorption pipe crossing the suction pipe through the refrigerant inlet end. When the high-temperature gas contacts the heat absorption pipe, the refrigerant in the heat absorption pipe absorbs heat from the high-temperature gas and vaporizes. The vaporized refrigerant boosts the pressure in the heat absorption pipe to push the plug, opens the communication between the exhaust passage and the heat absorption pipe, so that the vaporized refrigerant flows to the exhaust passage to push the impeller to rotate, and finally the vaporized refrigerant discharges the heat through the outlet end of the heat release mechanism; Among them, while the impeller rotates, it drives the driving gear to rotate, so that the driving gear drives the driven gear in the air-cooling mechanism to rotate. While the driven gear rotates, it drives the fan to rotate to suck the air at the upper end of the air-cooling chamber, and quickly blows the air to the suction pipe at the lower end of the air-cooling chamber, accelerating the rapid flow of air and strengthening the heat exchange of the air with the high-temperature gas in the suction pipe; In addition, cold air is introduced at the air inlet at the upper end of the air-cooling chamber, and at the same time, a sealed movable blade is provided at the air outlet at the lower end of the air-cooling chamber, which is beneficial to ensuring the air temperature and reducing the influence of the workshop environment; Therefore, the air at the lower end of the air-cooling chamber is boosted under the action of the fan. After pushing the blade to rotate and open the connection between the air outlet and the outside, the heat-exchanged air will finally be discharged from the air-cooling chamber; Or the air outlet is arranged in the suction pipe, and the negative pressure of the suction pipe causes the blade to open, so that the air enters the suction pipe and mixes with the high-temperature gas, reducing the temperature of the high-temperature gas.

10. The cable manufacturing cooling method according to claim 9, wherein, The pressure generated by the suction pipe for extracting high-temperature gas is provided by the negative pressure tank, and the pressure of the suction pipe can also be adjusted through the pressure regulating valve on the suction pipe. Finally, the flow rate of the high-temperature gas sucked by the suction pipe is controlled, which is convenient for the heat absorption and heat dissipation mechanism and the air-cooling mechanism to effectively cool the high-temperature gas.

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