A super fiber synthetic leather kneading drum type polyethylene removing device and an operating method thereof

Abstract

The application discloses a kind of super fiber synthetic leather rubbing cylinder type polyethylene removal device and its operating method, the device includes groove body, rubbing cylinder, driving wheel, heating pipe and lifting mechanism, rubbing cylinder is set in groove body by lifting mechanism, so as to realize the adjustability of rubbing cylinder inclination angle, heating pipe is set in groove body and is located below rubbing cylinder, driving wheel is below rubbing cylinder, and with rubbing cylinder contact, the rotation of driving wheel promotes the rotation of rubbing cylinder, the inner wall of rubbing cylinder is provided with convex rib in ring direction, rubbing cylinder is densely covered with small hole, implementation is to introduce base cloth into the inclined rubbing cylinder, by the rotation of rubbing cylinder, so that base cloth repeatedly tumbles and washes in rubbing cylinder, fully contacts and exchanges with toluene in groove body, under the action of gravity, lead out.The application uses the device, so that polyethylene in base cloth can be efficiently and fully extracted in shorter equipment, less toluene.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of synthetic leather manufacturing, and particularly relates to a super fiber synthetic leather kneading cylinder type polyethylene removal device and an operation method thereof. BACKGROUND

[0002] In the process of manufacturing super fiber synthetic leather, polyethylene can be dissolved in hot toluene, while polyamide is insoluble, so hot toluene is used as an extraction solvent of polyethylene, and a plurality of extraction grooves are used to extract polyethylene in island fibers in a continuous immersion and extrusion mode to form bundle-shaped superfine fibers, which is a toluene extraction process.

[0003] A traditional method is to remove polyethylene by using a toluene extraction process of a multi-section extrusion groove type. The existing multi-section extrusion groove type process is as follows: the super fiber base cloth is sent to a hot toluene groove, and the process is immersion-rolling- immersion-rolling, polyethylene in the super fiber base cloth is extracted, and then toluene cleaning, drying and other operations are performed. Figure 1 When working, six rolling groove extraction grooves are used, each groove includes a groove body, the lower part of the groove body is filled with hot toluene solution, and the toluene solution is heated by a heating pipe at the bottom. Each groove has three pairs of upper and lower driving pressure rollers, six upper guide rollers, nine driving traction rollers and two tension rollers. The tension rollers are used to adjust the speed between the driving rollers. The super fiber base cloth repeatedly passes between the driving rollers and the traction rollers to be immersed and extruded, so that polyethylene in the island fibers is dissolved in hot toluene, and polyethylene is extracted by continuously flowing toluene. The base cloth is then washed with toluene, dried and subjected to other operations to obtain a super fiber base cloth with high simulation and good flexibility.

[0004] The traditional super fiber synthetic leather multi-section extrusion groove type polyethylene removal process is a static extraction process. In the extraction process, toluene and polyethylene exchange is not sufficient, and a long immersion time and multiple rolling are required. A large number of rollers are required, and the product speed can reach 6 meters per minute with 18 groups of rollers. Due to the large number of rollers and tension rollers, the fiber is stretched after being pulled through multiple traction rollers, which causes the width to decrease, and the warp and weft strength of the base cloth changes greatly, affecting the product quality. The pressure rollers and traction rollers generally use mechanical seals. When the base cloth passes through the joint, the thickness is too large, and the rollers need to be lifted to pass through the joint. Therefore, the pressure rollers that are lifted cannot use mechanical seals, and only packing seals with poor effect can be used, which causes a large toluene leakage. A large number of pressure rollers cause a large number of control points. After the base cloth passes through the pressure rollers, the base cloth is prone to deviation, which stops the production. SUMMARY

[0005] In view of the above problems, the present application aims to provide a super fiber synthetic leather kneading cylinder type polyethylene removal device and an operation method thereof.

[0006] The specific technical solutions are as follows:

[0007] The application discloses a kind of super fiber synthetic leather kneading cylinder type polyethylene removal device, including groove body, kneading cylinder, driving wheel, heating pipe and lifting mechanism, kneading cylinder is arranged in groove body by lifting mechanism, to realize the adjustability of the inclination angle of kneading cylinder, heating pipe is arranged in groove body and is located below kneading cylinder, driving wheel is located below kneading cylinder, and with kneading cylinder, the rotation of driving wheel promotes the rotation of kneading cylinder, the inner wall of kneading cylinder is provided with convex rib in ring direction, and kneading cylinder is densely covered with small holes.

[0008] The setting of the convex rib in the kneading cylinder strengthens the stiffness of the cylinder body, increases the friction, and brings the super fiber base cloth in the static state, while producing greater stirring effect on liquid toluene during rotation, accelerating convection.

[0009] Further, at least two kneading cylinders are provided in the groove body, and the kneading cylinders are linearly movably connected.

[0010] The application further discloses an operation method of the super fiber synthetic leather kneading cylinder type polyethylene removal device.

[0011] 1) The inclination angle of the kneading cylinder is adjusted in advance, the super fiber base cloth containing PE is pulled into the kneading cylinder from the inlet of the groove body by an inlet traction machine, and is pulled out from the kneading cylinder, and is pulled out from the outlet of the groove body.

[0012] 2) Toluene solution is injected into the groove body.

[0013] 3) The heating pipe is turned on, the driving wheel drives the kneading cylinder to rotate after the solution reaches a stable temperature, the super fiber base cloth containing PE is repeatedly rolled and washed in the kneading cylinder, and is fully contacted and exchanged with toluene, and is conveyed to the outlet of the groove body under the action of gravity, and is pulled out to complete the work of the extraction section.

[0014] Further, the temperature of the heating pipe is controlled at 85±2 DEG C.

[0015] Further, the liquid level height of the toluene solution after the toluene solution is injected in step 2) is 0.6-0.8 meters.

[0016] Further, the inclination angle of the kneading cylinder (2) is 3-6 DEG.

[0017] Further, the inner diameter of the kneading cylinder (2) is 1300-1400 mm, too small, and the super fiber base cloth is too little, too large, and the square groove outside is large, and it is difficult to transport, the diameter of the small holes densely covered on the kneading cylinder (2) is 4-6 mm, and the burrs of the holes are outward, to ensure that the inside is smooth.

[0018] The application has the following beneficial effects:

[0019] 1) The device of the application can efficiently and fully extract polyethylene in the base cloth in a shorter equipment and less toluene.

[0020] 2) improve the fiber stretch caused by repeated rolling, resulting in uneven warp and weft strength, and serious width shrinkage;

[0021] 3) reduce power input, reduce input shaft, greatly reduce the risk of toluene gas leakage and harm to the environment, reduce waste gas treatment pressure, improve the environment, save costs. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The device is a multi-section extrusion tank type polyethylene removal process for the prior art super fiber synthetic base cloth;

[0023] Figure 2 It is a vertical sectional view of the device of the present application;

[0024] Figure 3 It is a transverse sectional view of the device of the present application.

[0025] In the figure: 1, tank body; 2, kneading cylinder; 21, raised rib; 3, drive wheel; 4, heating pipe; 5, lifting mechanism; 6, inlet traction machine. DETAILED DESCRIPTION

[0026] The present application will be further described below in conjunction with the drawings and examples in the specification, but the protection scope of the present application is not limited thereto.

[0027] As shown in Figure 2 and Figure 3 A super fiber synthetic leather kneading cylinder type polyethylene removal device, comprising a tank body 1, two kneading cylinders 2, a drive wheel 3, a heating pipe 4 and a lifting mechanism 5, the kneading cylinder 2 is arranged in the tank body 1 through the lifting mechanism 5, the heating pipe 4 is arranged in the tank body 1 and located below the kneading cylinder 2, the drive wheel 3 is located below the kneading cylinder 2 and touches the kneading cylinder 2, the rotation of the drive wheel 3 pushes the rotation of the kneading cylinder 2, the inner wall of the kneading cylinder 2 is provided with raised ribs 21 in a ring shape, the kneading cylinder 2 is densely covered with small holes, the kneading cylinder 2 is linearly movably connected with the kneading cylinder 2, the inner diameter of the kneading cylinder 2 is 1300-1400mm, and the diameter of the small holes densely covered on the kneading cylinder 2 is 4-6mm.

[0028] Example 1

[0029] The operation method of a super fiber synthetic leather kneading cylinder type polyethylene removal device comprises the following steps:

[0030] 1) The inclination angle of the kneading cylinder 2 is adjusted to 4° in advance, the super fiber base cloth containing PE is connected with a high-strength cotton weaving lead cloth of about 100 meters in front, is pulled into the kneading cylinder 2 from the inlet of the tank body 1 by the inlet traction machine 6, and is pulled out from the tank body 1 outlet;

[0031] 2) Inject toluene solution into the tank body 1, the height of the toluene solution is 0.7 meters;

[0032] 3) Turn on the heating tube 4 and the temperature rises to 85℃. After the solution reaches a stable temperature, the drive wheel 3 drives the kneading drum 2 to rotate. The PE-containing microfiber base cloth is repeatedly rolled and cleaned in the kneading drum 2, and fully contacts and exchanges with toluene. Under the action of gravity, it is transported to the outlet of the tank 1 and passes out to complete the work of the extraction section.

[0033] 4) Pure toluene is added from the outlet of the base fabric of tank 1 to complete the extraction. Toluene with a high concentration of polyethylene flows out through the overflow port on the inlet side of the base fabric. The toluene consumption is 10 cubic meters / hour.

[0034] Example 2

[0035] use Figure 1 The apparatus shown is for the multi-segment extrusion groove polyethylene removal process of the microfiber synthetic base fabric. The polyethylene removal experiment was performed on the same base fabric as in Example 1, and the heating temperature was the same.

[0036] At the same production speed, the toluene content in tank 1 of Example 1 can be reduced by 60 m³, which is 1 / 3 of the toluene content in the traditional process, and the steam consumption is about 1 / 3 of that in the traditional process. According to the current traditional process, the steam consumption is about 1 ton / hour, and the annual consumption is 7,200 tons (based on actual operation for 300 days / year), with an annual steam consumption of about 2.2 million yuan. The new process can save 1.1 million yuan. Moreover, compared with the traditional process, the number of sealing points is reduced from 96 to 2, and the probability and amount of toluene leakage are reduced by 98%, which greatly reduces the danger of toluene gas leakage and the harm to the environment.

Claims

1. A super fiber synthetic leather kneading drum polyethylene removal device, characterized by, The utility model relates to a kind of PE-containing microfiber base cloth extraction device, including groove (1), kneading cylinder (2), driving wheel (3), heating pipe (4) and lifting mechanism (5), kneading cylinder (2) is set in groove (1) by lifting mechanism (5), to realize the adjustability of the inclination angle of kneading cylinder (2), heating pipe (4) is set in groove (1) and is located below kneading cylinder (2), driving wheel (3) is located below kneading cylinder (2), and it is contacted with kneading cylinder (2), the rotation of driving wheel (3) promotes the rotation of kneading cylinder (2), and the inner wall of kneading cylinder (2) is provided with convex rib (21) annularly, and kneading cylinder (2) is densely covered with small hole; The liquid level height of toluene solution is 0.6-0.8 meters after toluene solution is injected into groove (1); The inclination angle of kneading cylinder (2) is 3-6 °.

2. The super-fiber synthetic leather kneading drum polyethylene removing device according to claim 1, characterized in that, At least two kneading cylinders (2) are provided in groove (1), and the kneading cylinders (2) are linearly movably connected.

3. A method of operating the super-fiber synthetic leather kneading drum polyethylene removal device according to claim 1, characterized by, The utility model relates to a kind of PE-containing microfiber base cloth extraction device, including the following steps: 1) the inclination angle of kneading cylinder (2) is adjusted in advance, and PE-containing microfiber base cloth is pulled to kneading cylinder (2) from the import of groove (1) by import traction machine (6), and is pulled out from kneading cylinder (2), and is pulled out from the outlet of groove (1); 2) toluene solution is injected into groove (1); 3) heating pipe (4) is opened, and after solution reaches stable temperature, driving wheel (3) drives kneading cylinder (2) to rotate, and PE-containing microfiber base cloth is repeatedly rolled in kneading cylinder (2) and is washed, and is fully contacted with toluene and exchanges, under the action of gravity, is conveyed to the outlet of groove (1), and is pulled out to complete the work of extraction section.

4. The operating method of claim 3, wherein, The temperature of heating pipe (4) is controlled at 85±2 ℃.

5. The operating method of claim 3, wherein, The inner diameter of kneading cylinder (2) is 1300-1400 mm, and the diameter of the small hole densely covered on kneading cylinder (2) is 4-6 mm.

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