A water-cooled shaping and drying device and drying method for plastic woven bag wire drawing production

Abstract

A water-cooled shaping and drying device and a drying method for plastic woven bag wire drawing production, comprising an outer shell and a plurality of cooling and drying cylinders, wherein the cooling and drying cylinders comprise a water-cooling cylinder, a mist-cooling cylinder, a dehumidification and preheating cylinder and a drying cylinder along the conveying direction of the wire material, wherein cooling water of a set temperature is introduced into the water-cooling cylinder for rapidly cooling and shaping the surface of the wire material, wherein cooling water mist and air flow are introduced into the mist-cooling cylinder, and after initial rapid cooling, the contact time and contact amount of the wire material with the cooling water can be reduced through the combination of water mist and cold air, thereby reducing the amount of cooling water penetrating into the inside of the wire material, wherein the dehumidification and preheating cylinder can remove the attached water on the surface of the wire material by suction and preheat it, wherein the wire material is dried in a hot air environment with a gradient temperature increase in the drying cylinder, thereby ensuring that the moisture inside the wire material can be fully evaporated, so that the flat wire subsequently processed from the wire material has high toughness, and the overall tensile and tear resistance properties are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of woven bag production, and specifically refers to a water-cooled shaping and drying device and a drying method for plastic woven bag wire drawing production. Background Art

[0002] Plastic woven bags are mainly used to protect goods, contain items, improve the timeliness of goods transportation, and reduce damage during handling and storage. The wire drawing production process of plastic woven bags is to proportion and mix the main raw materials of polyethylene (PE) or polypropylene (PP) resin and necessary auxiliary materials such as masterbatch, and then extrude them into flat strips through an extruder, and then stretch them through a stretching machine to form flat wires, which are subsequently used to weave into cloth, and finally formed into woven bags through cutting, printing, sewing, etc. In the wire drawing process of woven bag production, the flat wire is usually cooled by immersion water cooling, and the moisture content inside the material is relatively high after cooling.

[0003] The current drying method mainly heats the material through an external heat source (such as hot air), and the heat is transferred from the surface of the material to the inside. Due to the gradient effect of heat transfer, the surface of the material may be dry, while the inside still contains a lot of moisture, showing a phenomenon of dry outside and wet inside. The state of dry outside and wet inside may cause the moisture inside the flat wire to gradually evaporate during subsequent processing or use, forming tiny bubbles or voids, thereby reducing the overall strength of the flat wire and making its toughness worse, which will increase the risk of damage to the woven bag during transportation and storage. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention creatively adopts a water-cooled shaping and drying device and a drying method for plastic woven bag drawing production to partially solve the problems raised in the above background technology.

[0005] The technical solution adopted is as follows: In a first aspect, an embodiment of the present invention proposes a water-cooled shaping and drying device for plastic woven bag drawing production, comprising:

[0006] A plurality of cooling and drying cylinder groups are arranged side by side and are arranged inside the outer shell;

[0007] Among them, along the conveying direction of the wire, the cooling and drying cylinder includes a water-cooling cylinder, a mist-cooling cylinder, a dehumidification and preheating cylinder and a drying cylinder. A first water pipe is provided on the outer shell corresponding to the water-cooling cylinder, a second water pipe and a first air pipe are provided corresponding to the mist-cooling cylinder, a second air pipe is provided corresponding to the dehumidification and preheating cylinder, and a third air pipe is provided corresponding to the drying cylinder. The first water pipe and the second water pipe are configured to be connected to an external water supply and pumping device, and the first air pipe, the second air pipe and the third air pipe are configured to be connected to an external air supply and pumping device. The first water pipe is configured to introduce cooling water into the water-cooling cylinder, the second water pipe and the first air pipe are configured to introduce cooling water mist and airflow into the mist-cooling cylinder respectively to reduce the contact time between the wire and the cooling water, the second air pipe is configured to discharge the water vapor in the dehumidification and preheating cylinder, and the third air pipe is configured to introduce an airflow of a set temperature into the drying cylinder to dry the wire.

[0008] Furthermore, the water-cooling cylinder is provided with a plurality of water-cooling chambers along the conveying direction of the wire, and any two adjacent water-cooling chambers are separated by a first partition, and the wire passes through a plurality of the first partitions;

[0009] The first water pipe includes a first water inlet pipe arranged on the bottom surface of the outer shell and a first water outlet pipe arranged on the top surface of the outer shell, the first water inlet pipe is connected to an external water supply device, and the first water outlet pipe is connected to an external water pumping device. A plurality of flow equalizing plates are installed between the inner wall of the outer shell and the outer wall of the water-cooling cylinder, which are used to uniformly introduce the cooling water pumped into the first water inlet pipe into the plurality of water-cooling cavities so that the initial temperature of the cooling water in the plurality of water-cooling cavities is the same.

[0010] Furthermore, the water-cooling cylinder is provided with a water-cooling inlet on a side facing the first water inlet pipe, and a water-cooling outlet on a side facing the first water outlet pipe. Guide plates are provided inside the water-cooling cylinder corresponding to the water-cooling inlet and the water-cooling outlet. A first water-cooling cavity and a third water-cooling cavity are formed on the inner side of the guide plates corresponding to the water-cooling inlet and the water-cooling outlet, respectively. A second water-cooling cavity is formed between the two groups of guide plates. The cooling water entering from the water-cooling inlet passes through the first water-cooling cavity, the second water-cooling cavity, and the third water-cooling cavity in sequence and flows out from the water-cooling outlet, so that the cooling water can flow through the surface of the wire for one circle.

[0011] Furthermore, a plurality of diffusion chambers are provided inside the mist cooling cylinder along the conveying direction of the wire material, and the plurality of diffusion chambers are arranged in two groups on the upper and lower sides of the wire material, and an atomizing nozzle is fixedly installed at the input end of each diffusion chamber;

[0012] The second water pipe includes a second water inlet pipe arranged on the bottom surface of the outer shell and a second water outlet pipe arranged on the top surface of the outer shell, the second water inlet pipe and the second water outlet pipe are both connected to an external water supply device, and the second water outlet pipe and the second water inlet pipe are respectively connected to parts of the atomizing nozzles distributed on the upper and lower sides;

[0013] The first air pipe includes a first air inlet pipe arranged on the bottom surface of the outer shell and a first air outlet pipe arranged on the top surface of the outer shell, the first air inlet pipe and the first air outlet pipe are both connected to an external air supply device, and the first air outlet pipe and the first air inlet pipe are respectively connected to parts of the atomizing nozzles distributed on the upper and lower sides.

[0014] Furthermore, the diffusion chamber is set to a cone shape, the wide mouth of the diffusion chamber is facing the wire, the atomizing nozzle connected to the second water pipe and the atomizing nozzle connected to the first air pipe are sequentially or alternately distributed along the conveying direction of the wire, and the number ratio is set to 1~4.

[0015] Furthermore, the interior of the dehumidification and preheating cylinder is provided with a first dehumidification chamber, a second dehumidification chamber and a preheating chamber along the conveying direction of the wire material, and a second partition is provided between the first dehumidification chamber, the second dehumidification chamber and the preheating chamber for separation, and the wire material passes through a plurality of the second partitions;

[0016] The second air pipe includes a second air extraction pipe arranged on the bottom surface of the outer shell and a second air supply pipe arranged on the top surface of the outer shell, the second air extraction pipe is connected to an external air extraction device, the second air supply pipe is connected to an external air supply device, the second air extraction pipe is connected to the first dehumidification chamber, the second dehumidification chamber and the preheating chamber, and the second air supply pipe is connected to the preheating chamber.

[0017] Furthermore, the lengths of the first dehumidification chamber, the second dehumidification chamber, and the preheating chamber increase sequentially, and the length of the preheating chamber is greater than or equal to the sum of the lengths of the second dehumidification chamber and the first dehumidification chamber. At least two sponge blocks with different densities are arranged in the second dehumidification chamber, and the sponge blocks are wrapped on the outside of the wire material, and the density of the sponge blocks increases sequentially along the conveying direction of the wire material.

[0018] Furthermore, the drying cylinder is provided with a plurality of drying chambers along the conveying direction of the wire material, and any two adjacent drying chambers are separated by a third partition plate, and the wire material passes through the plurality of the third partition plates;

[0019] The third air pipe is configured to be connected to the drying chamber at the end, and a guide pipe is installed between any two adjacent drying chambers, so that the hot air introduced by the third air pipe can be guided from the drying chamber at the end to the drying chamber at the head end in sequence against the conveying direction of the outer shell, so that the hot air temperature in the multiple drying chambers increases step by step along the conveying direction of the outer shell.

[0020] Furthermore, the drying chamber located at the head end is connected to the preheating chamber through a guide pipe, and the temperature difference of the hot air in any two adjacent drying chambers is set to 1°C~5°C.

[0021] The embodiment of the present invention provides a water-cooling and drying method for plastic woven bag wire drawing production, using the above-mentioned water-cooling and drying device for plastic woven bag wire drawing production, including the following steps:

[0022] Rapid cooling: After the wire is drawn, it enters the outer shell and passes through the cooling and drying cylinder. The part of the wire inside the water-cooling cylinder is cooled by cooling water at a set temperature, and the temperature is reduced to the set temperature;

[0023] Mist cooling: the part of the wire inside the mist cooling cylinder is cooled by water mist and airflow at a set temperature, and the temperature is reduced to the set temperature;

[0024] Dehumidification: The wire material in the front half of the dehumidification preheating cylinder is sucked out of the attached water on the surface by the second air pipe;

[0025] Preheating: The second air pipe blows and sucks the rear half of the dehumidification and preheating cylinder, so that the surface of the wire is air-dried and the whole is preheated;

[0026] Drying: During the conveying process, the wire in the drying cylinder is exposed to hot air with a rising temperature gradient until it is dried.

[0027] The beneficial effects achieved by the present invention using the above structure are as follows:

[0028] (1) Cooling water of set temperature is introduced into the water cooling cylinder to rapidly cool and shape the surface of the wire to reduce the contact time between the wire and the cooling water. Cooling water mist and air flow are introduced into the mist cooling cylinder. After the initial rapid cooling, the contact time and amount of the wire with the cooling water can be reduced through the combination of water mist and cold air, thereby reducing the amount of cooling water penetrating into the interior of the wire and avoiding the phenomenon of dry outside and wet inside of the wire caused by high humidity inside the wire during the subsequent drying process.

[0029] (2) The dehumidification and preheating cylinder can remove the attached water on the surface of the wire by suction and preheat it. The wire is dried in a hot air environment with a gradient temperature increase in the drying cylinder, which can ensure that the moisture inside the wire can be fully evaporated, so that the wire can be dried evenly as a whole, so that the flat wire processed from the wire has high toughness, and the overall tensile and tear resistance properties are improved, thereby improving the quality of the woven bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of the three-dimensional structure of a water-cooled shaping and drying device for plastic woven bag wire drawing production proposed in an embodiment of the present invention;

[0031] Figure 2 A schematic diagram of the three-dimensional structure of a cooling and drying cylinder proposed in an embodiment of the present invention;

[0032] Figure 3 A schematic diagram of the internal structure of a water-cooled shaping and drying device for plastic woven bag wire drawing production proposed in an embodiment of the present invention;

[0033] Figure 4 A schematic diagram of the partial structure of a water-cooling cylinder proposed in an embodiment of the present invention;

[0034] Figure 5 A schematic diagram of the partial structure of the mist cooling cylinder proposed in an embodiment of the present invention;

[0035] Figure 6 This is a schematic diagram of the structure of the deflector in the drying cylinder proposed in an embodiment of the present invention.

[0036] Among them, 01, wire; 10, outer shell; 100, sealing element; 101, first water pipe; 1011, first water inlet pipe; 1012, first water outlet pipe; 102, second water pipe; 1021, second water inlet pipe; 1022, second water outlet pipe; 103, first air pipe; 1031, first air inlet pipe; 1032, first air outlet pipe; 104, second air pipe; 1041, second air extraction pipe; 1042, second air supply pipe; 105, third air pipe; 11, flow equalizer; 20, cooling and drying cylinder; 21, water cooling cylinder; 210, water cooling chamber; 2101, water Cold water inlet; 2102, water-cooled water outlet; 2103, first water-cooled chamber; 2104, second water-cooled chamber; 2105, third water-cooled chamber; 211, guide plate; 212, first partition; 22, mist cooling cylinder; 220, diffusion chamber; 221, atomizing nozzle; 23, dehumidification and preheating cylinder; 2301, first dehumidification chamber; 2302, second dehumidification chamber; 2303, preheating chamber; 231, second partition; 24, drying cylinder; 240, drying chamber; 241, third partition; 242, guide tube; 243, guide; 2431, bracket; 2432, fin.

[0037] The accompanying drawings are used to provide further understanding of the embodiments and constitute a part of the specification. They are used for explanation together with the embodiments and do not constitute a limitation of the embodiments. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection.

[0039] In the description of the embodiments, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the embodiments.

[0040] like Figure 1 and Figure 2 As shown, in an embodiment of the present invention, a water-cooled shaping and drying device for plastic woven bag wire drawing production is provided, including an outer shell 10 and a plurality of cooling and drying cylinders 20 installed in the outer shell 10, the cooling and drying cylinders 20 are arranged according to the number of wires 01, the outer shell 10 is arranged on the path of the wires 01 along the conveying direction of the wires 01, the plurality of cooling and drying cylinders 20 are arranged side by side inside the outer shell 10, and are coated on the outside of the wires 01, the outer shell 10 and the cooling and drying cylinders 20 are arranged up and down as a whole, can be opened to put in the wires 01 and then closed, sealing members 100 are arranged at both ends of the cooling and drying cylinders 20 to seal with the outer shell 10, and the sealing member 100 adopts a rubber gasket with a hole for passing the wires 01.

[0041] Among them, the cooling and drying cylinder 20 includes a water-cooling cylinder 21, a mist-cooling cylinder 22, a dehumidification and preheating cylinder 23 and a drying cylinder 24 along the conveying direction of the wire 01. The wire 01 is cooled and dried by utilizing multiple functional areas in the cooling and drying cylinder 20. A first water pipe 101 is provided on the corresponding outer shell 10 corresponding to the water-cooling cylinder 21, a second water pipe 102 and a first air pipe 103 are provided on the outer shell 10 corresponding to the mist-cooling cylinder 22, a second air pipe 104 is provided on the outer shell 10 corresponding to the dehumidification and preheating cylinder 23, and a third air pipe 105 is provided on the outer shell 10 corresponding to the drying cylinder 24. The first water pipe 101 and the second water pipe 102 are connected to an external water supply and pumping device, and the first air pipe 103, the second air pipe 104 and the third air pipe 105 are connected to an external air supply and pumping device.

[0042] In some embodiments, a temperature sensor is provided in each functional area, and the temperature to be cooled when the wire 01 is water-cooled and shaped is defined as H°C. The first water pipe 101 is configured to introduce cooling water of a set temperature into the water-cooling cylinder 21, and the temperature of the wire 01 can be reduced by 4 / 5H°C after passing through the water-cooling cylinder 21, so that the surface of the wire 01 is rapidly cooled and shaped, thereby reducing the contact time between the wire 01 and the cooling water.

[0043] Among them, the second water pipe 102 and the first air pipe 103 are configured to respectively introduce cooling water mist and airflow into the mist cooling cylinder 22, and reduce the temperature of the wire 01 by 1 / 5H°C. After the initial rapid cooling, the wire 01 is further cooled by the combination of water mist and cold air to shape the wire 01 as a whole. This process can reduce the contact time and contact amount of the wire 01 with the cooling water, thereby reducing the amount of cooling water penetrating into the interior of the wire 01, and avoiding the phenomenon of dry outside and wet inside caused by high humidity inside the wire 01 in the subsequent drying process.

[0044] Furthermore, the second air pipe 104 is configured to discharge the water vapor in the dehumidification preheating cylinder 23, that is, the second air pipe 104 can remove the attached water on the surface of the wire 01 from the dehumidification preheating cylinder 23 by suction, and can make the surface of the wire 01 in an air-dried and preheated state, so as to facilitate the subsequent hot air to dry the wire 01 as a whole, avoiding the phenomenon of dry outside and wet inside.

[0045] Furthermore, the third air pipe 105 is configured to introduce an air flow of set temperature into the drying cylinder 24. In this way, the wire 01 is dried in a gradient heated hot air environment in a state where the surface is dry and preheated, which can ensure that the moisture inside the wire 01 can be fully evaporated, so that the wire 01 is dried evenly as a whole, and the flat wire subsequently processed from the wire 01 has high toughness, and the overall tensile resistance, tear resistance and other properties are improved, thereby improving the quality of the woven bag.

[0046] like Figure 3 and Figure 4 As shown, a plurality of water cooling chambers 210 are provided inside the water cooling cylinder 21 along the conveying direction of the wire 01 , and any two adjacent water cooling chambers 210 are separated by a first partition plate 212 , and the wire 01 passes through the plurality of first partition plates 212 .

[0047] In some embodiments, the first water pipe 101 includes a first water inlet pipe 1011 disposed on the bottom surface of the outer shell 10 and a first water outlet pipe 1012 disposed on the top surface of the outer shell 10. The first water inlet pipe 1011 is connected to an external water supply device, and the first water outlet pipe 1012 is connected to an external water pumping device.

[0048] In this way, the cooling water introduced by the first water inlet pipe 1011 can enter the water cooling chamber 210 and fill the entire water cooling chamber 210 from bottom to top, and is discharged from the first water outlet pipe 1012 on the upper side, so that the cooling water can fully contact and cool the wire 01.

[0049] Furthermore, in order to allow the initial low-temperature cooling water introduced by the first water inlet pipe 1011 to flow into the multiple water-cooling chambers 210, multiple flow equalizing plates 11 are installed between the inner wall of the outer shell 10 and the outer wall of the water-cooling cylinder 21, which are used to evenly introduce the cooling water pumped in by the first water inlet pipe 1011 into the multiple water-cooling chambers 210, so that the initial temperature of the cooling water in the multiple water-cooling chambers 210 is the same. In this way, when the wire 01 passes through the multiple water-cooling chambers 210, it is cooled by the cooling water of the same temperature, which can accelerate the cooling and molding speed of the wire 01 and reduce the contact time between the wire 01 and the cooling water.

[0050] Furthermore, in order to ensure that the cooling water in the water-cooling chamber 210 can fully contact the surface of the wire 01 and avoid blind spots, so as to prevent deformation caused by inconsistent overall cooling speed of the wire 01, a water-cooling inlet 2101 is provided on the side of the water-cooling cylinder 21 facing the first water inlet pipe 1011, and a water-cooling outlet 2102 is provided on the side facing the first water outlet pipe 1012. Guide plates 211 are provided inside the water-cooling cylinder 21 at locations corresponding to the water-cooling inlet 2101 and the water-cooling outlet 2102, and the cross-sectional shape of the guide plate 211 is constructed as a trumpet shape.

[0051] In some embodiments, a first water-cooling cavity 2103 and a third water-cooling cavity 2105 are respectively formed on the inner side of the guide plate 211 corresponding to the water-cooling inlet 2101 and the water-cooling outlet 2102, and a second water-cooling cavity 2104 is formed between the two sets of guide plates 211. The cooling water entering from the water-cooling inlet 2101 passes through the first water-cooling cavity 2103, the second water-cooling cavity 2104, and the third water-cooling cavity 2105 in sequence and flows out from the water-cooling outlet 2102, so that the cooling water can flow through the surface of the wire 01 for a circle, so that the surrounding side of the wire 01 is evenly cooled.

[0052] like Figure 3 and Figure 5 As shown, a plurality of diffusion chambers 220 are provided inside the mist cooling cylinder 22 along the conveying direction of the wire 01. The plurality of diffusion chambers 220 are arranged in two groups on the upper and lower sides of the wire 01. An atomizing nozzle 221 is fixedly installed at the input end of each diffusion chamber 220.

[0053] Furthermore, the second water pipe 102 includes a second water inlet pipe 1021 arranged on the bottom surface of the outer shell 10 and a second water outlet pipe 1022 arranged on the top surface of the outer shell 10. The second water inlet pipe 1021 and the second water outlet pipe 1022 are both connected to an external water supply device, and the second water outlet pipe 1022 and the second water inlet pipe 1021 are respectively connected to some atomizing nozzles 221 distributed on the upper and lower sides. In this way, water is supplied to the atomizing nozzle 221 through the second water pipe 102, and water mist can be sprayed on the upper and lower sides of the wire 01 for cooling. Compared with the immersion method, the water mist can reduce the contact amount between the wire 01 and the cooling water, thereby reducing the amount of cooling water seeping into the wire 01.

[0054] Furthermore, the first air pipe 103 includes a first air inlet pipe 1031 arranged on the bottom surface of the outer shell 10 and a first air outlet pipe 1032 arranged on the top surface of the outer shell 10. The first air inlet pipe 1031 and the first air outlet pipe 1032 are both connected to an external air supply device, and the first air outlet pipe 1032 and the first air inlet pipe 1031 are respectively connected to some atomizing nozzles 221 distributed on the upper and lower sides. In this way, air is supplied to the atomizing nozzle 221 through the first air pipe 103, and the air flow sprayed on the upper and lower sides of the wire 01 can be diffused for cooling. When combined with water mist, it can provide a better cooling effect for the wire 01, and at the same time further reduce the contact time and contact amount of the wire 01 with the cooling water.

[0055] Furthermore, the diffusion chamber 220 is set to a cone shape, and the wide mouth direction of the diffusion chamber 220 is toward the wire 01. The atomizing nozzle 221 connected to the second water pipe 102 and the atomizing nozzle 221 connected to the first air pipe 103 are sequentially distributed or alternately distributed along the conveying direction of the wire 01, and the number ratio is set to 1~4. In some embodiments, the cooling effect of the wire 01 can be judged according to the temperature of the wire 01. If the cooling speed cannot meet the set requirements, the ratio of water spraying and air spraying of the atomizing nozzle 221 can be adjusted to achieve a better cooling effect as a whole.

[0056] In combination with the above embodiments, by changing the cooling method of the wire 01, in preparation for subsequent drying, the wire 01 is cooled rapidly to reduce the contact time and amount between the wire 01 and the cooling water, so as to reduce the amount of water seepage inside the wire 01 and avoid the phenomenon that the wire 01 is dry outside and wet inside after drying.

[0057] At the same time, since there is residual moisture on the surface of the wire 01, during drying, the heat during drying will act on the residual water on the surface in advance, so that the moisture inside the wire 01 cannot be evaporated in time, resulting in the problem of dry outside and wet inside after drying.

[0058] like Figure 1 and Figure 3As shown, the interior of the dehumidification and preheating cylinder 23 is provided with a first dehumidification chamber 2301, a second dehumidification chamber 2302 and a preheating chamber 2303 along the conveying direction of the wire 01, and a second partition 231 is provided between the first dehumidification chamber 2301, the second dehumidification chamber 2302 and the preheating chamber 2303 for separation, and the wire 01 passes through multiple second partitions 231.

[0059] Furthermore, the second air pipe 104 includes a second air extraction pipe 1041 arranged on the bottom surface of the outer shell 10 and a second air supply pipe 1042 arranged on the top surface of the outer shell 10, the second air extraction pipe 1041 is connected to the external air extraction device, the second air supply pipe 1042 is connected to the external air supply device, the second air extraction pipe 1041 is connected to the first dehumidification chamber 2301, the second dehumidification chamber 2302 and the preheating chamber 2303, and the second air supply pipe 1042 is connected to the preheating chamber 2303.

[0060] In some embodiments, the second exhaust pipe 1041 connected to the first dehumidification chamber 2301 is connected to an external exhaust device, so that the diffusion chamber 220 and the first dehumidification chamber 2301 are in a negative pressure state, and the internal water and air are sucked out by the exhaust device, and at the same time, the water on the surface of the wire 01 is initially peeled off and discharged. The second exhaust pipe 1041 connected to the second dehumidification chamber 2302 further removes the moisture on the surface of the wire 01, so that there are no obvious water droplets attached to the surface. The preheating chamber 2303 is not only connected to the second exhaust pipe 1041, but also to the second air supply pipe 1042. It can blow and exhaust air at the same time to air-dry the wire 01 so that there is no moisture attached to the surface of the wire 01. In this way, the influence of surface water on drying is avoided, which facilitates the subsequent drying of the wire 01 as a whole.

[0061] Furthermore, the lengths of the first dehumidification chamber 2301, the second dehumidification chamber 2302, and the preheating chamber 2303 increase successively, and the length of the preheating chamber 2303 is greater than or equal to the sum of the lengths of the second dehumidification chamber 2302 and the first dehumidification chamber 2301. In this way, after the wire 01 is dehumidified in the first dehumidification chamber 2301 and the second dehumidification chamber 2302, it is air-dried and preheated in the preheating chamber 2303. Sufficient drying and preheating are beneficial to draining the moisture in the wire 01 and avoiding the influence of surface attached water in the subsequent drying process.

[0062] Furthermore, at least two sponge blocks with different densities are provided in the second dehumidification chamber 2302. The sponge blocks are wrapped around the outside of the wire 01, and the density of the sponge blocks increases successively along the conveying direction of the wire 01. In this way, the wire 01 will come into contact with the sponge blocks with gradually increasing density during the conveying process, and the moisture on the surface of the wire 01 will be absorbed by the sponge blocks, and then the moisture in the sponge blocks will be absorbed by negative pressure to maintain the water absorption of the sponge blocks.

[0063] like Figure 3As shown, a plurality of drying chambers 240 are provided inside the drying cylinder 24 along the conveying direction of the wire 01 , and any two adjacent drying chambers 240 are separated by a third partition plate 241 , and the wire 01 passes through the plurality of third partition plates 241 .

[0064] Furthermore, the third air pipe 105 is configured to be connected to the drying chamber 240 at the end, and a guide pipe 242 is installed between any two adjacent drying chambers 240, so that the hot air introduced by the third air pipe 105 can be guided from the drying chamber 240 at the end to the drying chamber 240 at the head end in sequence against the conveying direction of the outer shell 10, so that the hot air temperature in multiple drying chambers 240 increases step by step along the conveying direction of the outer shell 10.

[0065] In this way, multiple drying chambers 240 are connected in series, and the hot air is conveyed in the opposite direction to the wire 01 in the multiple drying chambers 240. During the flow of the hot air, the temperature is gradually reduced through heat exchange with the wire 01, so that the contact temperature of the wire 01 and the hot air increases from low to high, so that the wire 01 can be fully dried during the contact process with the hot air, and the moisture inside the wire 01 can be removed.

[0066] In some embodiments, the drying chamber 240 located at the head end is connected to the preheating chamber 2303 through the guide tube 242, and the wire 01 can be preheated by preheating with hot air. While reducing energy consumption, the surface of the wire 01 can be air-dried and the moisture inside the wire 01 can be removed. The temperature difference of the hot air in any two adjacent drying chambers 240 is set to 1°C~5°C, so that the wire 01 is dried in a gradient temperature increase environment. In this way, the moisture inside the wire 01 can be fully volatilized, and the wire 01 is dried from the inside to the outside as a whole, avoiding the phenomenon that the wire 01 is still dry outside and wet inside after drying.

[0067] like Figure 6 As shown, a deflector 243 is installed inside the drying chamber 240, and the deflector 243 includes a plurality of fins 2432 with ring portions around the wire 01. Brackets 2431 are provided at both ends of the fins 2432 for fixing the positions of the plurality of fins 2432. The hot air entering the drying chamber 240 from a single side will quickly fill the gap between the fins 2432 and the drying cylinder 24, and then flow through the fins 2432 to the peripheral surface of the wire 01, so that the hot air is fully in contact with the surface of the wire 01, thereby achieving a better drying effect.

[0068] The embodiment of the present invention provides a water-cooling and drying method for plastic woven bag wire drawing production, using the above-mentioned water-cooling and drying device for plastic woven bag wire drawing production, including the following steps:

[0069] Rapid cooling: After being drawn, the wire 01 enters the outer shell 10. When passing through the cooling and drying cylinder 20, the part of the wire 01 inside the water cooling cylinder 21 is cooled by cooling water of a set temperature, and the temperature is reduced to the set temperature.

[0070] In some embodiments, taking the temperature of the wire 01 at the outlet of the wire drawing machine as 200°C, and the wire 01 needs to be cooled to 50°C for shaping, the cooling range is 150°C, and the temperature of the wire 01 needs to be reduced to about 80°C after passing through the water-cooling cylinder 21. Through feedback from the internally installed temperature sensor, if this temperature cannot be reached, the cooling temperature is controlled to meet the set requirements by adjusting the temperature and flow rate of the cooling water. The cooling water (temperature of 20°C~40°C) introduced by the first water inlet pipe 1011 can enter the multiple water-cooling chambers 210 and fill the entire water-cooling chamber 210 from bottom to top, so that the cooling water can fully contact and cool the wire 01, so that the surface of the wire 01 is rapidly cooled, hardened and shaped. At the same time, the plastic is cooled at the same temperature in multiple sections. At the same temperature drop, compared with immersion cooling, the cooling speed can be accelerated, and the contact time between the wire 01 and the cooling water can be reduced.

[0071] Mist cooling: Part of the wire 01 inside the mist cooling cylinder 22 is cooled by water mist and air flow at a set temperature, and the temperature is reduced to the set temperature.

[0072] In some embodiments, water is supplied to the atomizing nozzle 221 through the second water pipe 102, and water mist can be sprayed on the upper and lower sides of the wire 01 for cooling. Compared with the immersion method, the water mist can reduce the contact amount between the wire 01 and the cooling water, thereby reducing the amount of cooling water seeping into the inside of the wire 01 and reducing the temperature of the wire 01 by about 30°C. Through the feedback of the internally installed temperature sensor, if this temperature cannot be reached, the cooling temperature is controlled to meet the set requirements by adjusting the temperature of the cooling water and the amount of water mist. After the initial rapid cooling, the wire 01 is further cooled by a combination of water mist and cold air to shape the wire 01 as a whole. This process can reduce the contact time and contact amount of the wire 01 with the cooling water, thereby reducing the amount of cooling water penetrating into the inside of the wire 01, and avoiding the phenomenon of dry outside and wet inside in the subsequent drying process caused by high humidity inside the wire 01.

[0073] Dehumidification: The wire material 01 in the front half of the dehumidification preheating cylinder 23 is sucked out by the second air pipe 104 to remove the attached water on the surface.

[0074] In some embodiments, the second exhaust pipe 1041 connected to the first dehumidification chamber 2301 is connected to an external exhaust device, so that the diffusion chamber 220 and the first dehumidification chamber 2301 are in a negative pressure state, and the internal water and air are sucked out by the exhaust device, while the water on the surface of the wire 01 is initially peeled off and discharged. The second exhaust pipe 1041 connected to the second dehumidification chamber 2302 further removes the moisture on the surface of the wire 01, so that there are no obvious water droplets attached to the surface.

[0075] Preheating: The rear half of the dehumidification and preheating cylinder 23 is blown and sucked by the second air pipe 104, so that the surface of the wire 01 is air-dried and the whole is preheated.

[0076] In some embodiments, the preheating chamber 2303 is not only connected to the second exhaust pipe 1041, but also connected to the second air supply pipe 1042, so that blowing and exhausting can be performed simultaneously to air-dry the wire 01 so that there is no moisture attached to the surface of the wire 01. In this way, the influence of surface water on drying is avoided, which facilitates the subsequent drying of the wire 01 as a whole.

[0077] Drying: During the conveying process, the wire material 01 in the drying cylinder 24 is exposed to hot air with a rising temperature gradient until it is dried.

[0078] In some embodiments, multiple drying chambers 240 are connected in series, and the hot air is conveyed in the opposite direction to the wire 01 in the multiple drying chambers 240. During the flow of the hot air, the temperature is gradually reduced through heat exchange with the wire 01, so that the contact temperature between the wire 01 and the hot air increases from low to high, so that the wire 01 can be fully dried during the contact process with the hot air, and the moisture inside the wire 01 can be removed.

[0079] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0080] The above description of the implementation mode is not restrictive, and the drawings show only one of the implementation modes, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the scope of protection.

Claims

1. A water-cooled shaping and drying device for plastic woven bag drawing production, characterized in that: include: outer shell; A plurality of cooling and drying cylinders are arranged side by side and are arranged inside the outer shell; Among them, along the conveying direction of the wire material, the cooling and drying cylinder includes a water-cooling cylinder, a mist-cooling cylinder, a dehumidification and preheating cylinder and a drying cylinder. A first water pipe is provided on the outer shell corresponding to the water-cooling cylinder, a second water pipe and a first air pipe are provided corresponding to the mist-cooling cylinder, a second air pipe is provided corresponding to the dehumidification and preheating cylinder, and a third air pipe is provided corresponding to the drying cylinder. The first water pipe and the second water pipe are connected to an external water supply and pumping device, and the first air pipe, the second air pipe and the third air pipe are connected to an external air supply and pumping device. The first water pipe is configured to introduce cooling water into the water-cooling cylinder, the second water pipe and the first air pipe are configured to introduce cooling water mist and airflow into the mist-cooling cylinder respectively to reduce the contact time between the wire material and the cooling water, the second air pipe is configured to discharge the water vapor in the dehumidification and preheating cylinder, and the third air pipe is configured to introduce airflow of a set temperature into the drying cylinder to dry the wire material; A plurality of diffusion chambers are arranged inside the mist cooling cylinder along the conveying direction of the wire material. The plurality of diffusion chambers are arranged in two groups on the upper and lower sides of the wire material. An atomizing nozzle is fixedly installed at the input end of each diffusion chamber. The interior of the dehumidification and preheating cylinder is provided with a first dehumidification chamber, a second dehumidification chamber and a preheating chamber along the conveying direction of the wire material, and a second partition is provided between the first dehumidification chamber, the second dehumidification chamber and the preheating chamber for separation, and the wire material passes through a plurality of second partitions; A plurality of drying chambers are arranged inside the drying cylinder along the conveying direction of the wire material, and any two adjacent drying chambers are separated by a third partition plate, and the wire material passes through the plurality of third partition plates; The first water pipe includes a first water inlet pipe arranged on the bottom surface of the outer shell and a first water outlet pipe arranged on the top surface of the outer shell, a water-cooling water inlet is provided on the side of the water-cooling tube facing the first water inlet pipe, and a water-cooling water outlet is provided on the side facing the first water outlet pipe, guide plates are provided inside the water-cooling tube corresponding to the water-cooling water inlet and the water-cooling water outlet, a first water-cooling cavity and a third water-cooling cavity are formed on the inner side of the guide plates corresponding to the water-cooling water inlet and the water-cooling water outlet, respectively, a second water-cooling cavity is formed between the two groups of guide plates, the cooling water entering from the water-cooling water inlet passes through the first water-cooling cavity, the second water-cooling cavity, the third water-cooling cavity in sequence and flows out from the water-cooling outlet, so that the cooling water can flow through the surface of the wire for one circle.

2. The water-cooled shaping and drying device for plastic woven bag wire drawing production according to claim 1 is characterized in that: A plurality of water cooling chambers are arranged inside the water cooling cylinder along the conveying direction of the wire, and any two adjacent water cooling chambers are separated by a first partition plate, the wire passes through the plurality of first partition plates, the first water inlet pipe is connected to an external water supply device, and the first water outlet pipe is connected to an external water pumping device; A plurality of flow equalizing plates are installed between the inner wall of the outer shell and the outer wall of the water cooling cylinder, for uniformly introducing the cooling water pumped into the first water inlet pipe into the plurality of water cooling chambers, so that the initial temperature of the cooling water in the plurality of water cooling chambers is the same.

3. The water-cooled shaping and drying device for plastic woven bag wire drawing production according to claim 1 is characterized in that: The second water pipe includes a second water inlet pipe arranged on the bottom surface of the outer shell and a second water outlet pipe arranged on the top surface of the outer shell, the second water inlet pipe and the second water outlet pipe are both connected to the external water supply device, and the second water outlet pipe and the second water inlet pipe are respectively connected to some atomizing nozzles distributed on the upper and lower sides; The first air pipe includes a first air inlet pipe arranged on the bottom surface of the outer shell and a first air outlet pipe arranged on the top surface of the outer shell. The first air inlet pipe and the first air outlet pipe are both connected to the external air supply device, and the first air outlet pipe and the first air inlet pipe are respectively connected to some atomizing nozzles distributed on the upper and lower sides.

4. The water-cooled shaping and drying device for plastic woven bag wire drawing production according to claim 3 is characterized by: The diffusion chamber is set to be conical, with the wide mouth of the diffusion chamber facing the wire. The atomizing nozzles connected to the second water pipe and the atomizing nozzles connected to the first air pipe are distributed sequentially or alternately along the conveying direction of the wire, and the number ratio is set to 1-4.

5. The water-cooled shaping and drying device for plastic woven bag wire drawing production according to claim 1 is characterized in that: The second air pipe includes a second air extraction pipe arranged on the bottom surface of the outer shell and a second air supply pipe arranged on the top surface of the outer shell, the second air extraction pipe is connected with the external air extraction device, the second air supply pipe is connected with the external air supply device, the second air extraction pipe is connected with the first dehumidification chamber, the second dehumidification chamber and the preheating chamber, and the second air supply pipe is connected with the preheating chamber.

6. The water-cooled shaping and drying device for plastic woven bag wire drawing production according to claim 5 is characterized in that: The lengths of the first dehumidification chamber, the second dehumidification chamber, and the preheating chamber increase successively, and the length of the preheating chamber is greater than or equal to the sum of the lengths of the second dehumidification chamber and the first dehumidification chamber. At least two sponge blocks with different densities are arranged in the second dehumidification chamber. The sponge blocks are wrapped around the outside of the wire material, and the density of the sponge blocks increases successively along the conveying direction of the wire material.

7. The water-cooled shaping and drying device for plastic woven bag wire drawing production according to claim 6 is characterized in that: The third air pipe is configured to be connected to the drying chamber at the end, and a guide pipe is installed between any two adjacent drying chambers, so that the hot air introduced by the third air pipe can be guided from the drying chamber at the end to the drying chamber at the head end in sequence against the conveying direction of the outer shell, so that the hot air temperature in multiple drying chambers increases step by step along the conveying direction of the outer shell.

8. The water-cooled shaping and drying device for plastic woven bag wire drawing production according to claim 7 is characterized in that: The drying chamber at the head end is connected to the preheating chamber through a guide pipe, and the temperature difference of the hot air in any two adjacent drying chambers is set to 1°C~5°C.

9. A drying method for plastic woven bag drawing production using water cooling and shaping, characterized in that: The water-cooled shaping and drying device for plastic woven bag wire drawing production according to claim 1 comprises the following steps: Rapid cooling: After the wire is drawn, it enters the outer shell and passes through the cooling and drying cylinder. The part of the wire inside the water-cooling cylinder is cooled by cooling water at a set temperature, and the temperature drops to the set temperature. Mist cooling: Part of the wire inside the mist cooling cylinder is cooled by water mist and airflow at a set temperature, and the temperature drops to the set temperature; Dehumidification: The wire in the front half of the dehumidification preheating cylinder is sucked out by the second air pipe to remove the attached water on the surface; Preheating: The second air pipe blows and sucks the second half of the dehumidification preheating cylinder to dry the surface of the wire and preheat the whole wire; Drying: During the conveying process, the temperature gradient of the hot air that the wire in the drying cylinder contacts increases until it is dried.

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