A kind of elastic woven cloth oil and wax removal pretreatment equipment

Abstract

The utility model discloses a kind of elastic woven cloth oil removal wax removal pretreatment equipment, applied to elastic woven cloth processing technical field, including one rotatably mounted hydraulic injection roller, hydraulic injection roller has a hollow roller body and a roller surface with multiple jet orifice, roller body inside is used to accommodate pressurized chemical treatment liquid, so that chemical treatment liquid can be sprayed from roller surface with certain pressure by jet orifice;And one with hydraulic injection roller cooperated press roller, press roller and hydraulic injection roller between form a clamping area for clamping and conveying elastic woven cloth, woven cloth passes through from clamping area and is extruded by hydraulic injection roller, press roller roller surface simultaneously, the device penetrates cleaning liquid into the fiber of elastic woven cloth by hydraulic pressure, and no longer rely on tension to flatten fabric to assist penetration, so entire equipment can operate under very low tension, protect elastic fiber in woven cloth.

Description

Technical Field

[0001] This utility model relates to the field of elastic woven fabric processing technology, specifically to a pretreatment device for degreasing and dewaxing elastic woven fabric. Background Technology

[0002] In existing pretreatment processes for elastic woven fabrics, the penetration efficiency of the chemical treatment solution is a key bottleneck determining the treatment effect and production efficiency. Commonly used equipment primarily promotes penetration through the following methods:

[0003] Immersion and pressing method: The fabric is immersed in a tank filled with chemical treatment solution for a long time and repeatedly pressed by rollers, hoping to force the liquid into the fabric through mechanical extrusion. For tightly woven elastic fabrics containing hydrophobic fibers and waxes, the liquid can only wet the surface, resulting in poor deep penetration and incomplete treatment.

[0004] Spraying method: The treatment liquid is sprayed onto the fabric surface through a nozzle. However, conventional pressure spraying is also difficult to overcome the tension barrier and hydrophobicity of the fabric surface. The liquid easily forms droplets on the fabric surface and is lost, resulting in waste and uneven penetration.

[0005] High-temperature accelerator method: This method reduces the viscosity and surface tension of the treatment solution by increasing its temperature, while simultaneously softening the oils and waxes on the fabric. Although it has some effect, it consumes a great deal of energy, and prolonged high temperatures can easily damage the properties of elastic fibers such as spandex. Utility Model Content

[0006] The present invention aims to solve the technical problem of low penetration efficiency of treatment liquid into elastic woven fabric in the prior art, that is, how to overcome the penetration barrier formed by the tight structure of the fabric, the hydrophobicity of the fibers and oil and wax impurities, and achieve rapid and deep penetration of the treatment liquid from the fabric surface to the fiber core in a highly efficient and uniform manner.

[0007] A pretreatment device for degreasing and dewaxing elastic woven fabric includes: a rotatably mounted hydraulic injection roller having a hollow roller body and a roller surface with multiple jet holes, the inside of the roller body being used to contain pressurized chemical treatment liquid, so that the chemical treatment liquid can be sprayed out from the roller surface at a certain pressure through the jet holes; and a pressure roller cooperating with the hydraulic injection roller, forming a clamping area between the pressure roller and the hydraulic injection roller for clamping and conveying the elastic woven fabric, the woven fabric passing through the clamping area and being simultaneously squeezed by the roller surfaces of the hydraulic injection roller and the pressure roller.

[0008] Preferably, it also includes a high-pressure pump connected to the hollow roller body for pressurizing the chemical treatment liquid inside the roller body, and the high-pressure pump is electrically connected to the mains power.

[0009] Preferably, the jet holes located on the surface of the hydraulic injection roller have a diameter between 50 micrometers and 200 micrometers.

[0010] Preferably, the jet holes are arranged in a uniform array on the roller surface.

[0011] Preferably, it also includes a cover plate for contacting the roller surface, the cover plate having an opening in the direction toward the pressure roller, and the processing liquid inside the roller body being ejected from the jet hole at the opening.

[0012] Preferably, the surface of the pressure roller is covered with a layer of elastic material.

[0013] Preferably, the elastic material layer is a rubber layer.

[0014] Preferably, it also includes a frame on which both the hydraulic injection roller and the pressure roller are rotatably mounted.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. Low tension operation: This device relies on hydraulic pressure to force the cleaning liquid to penetrate into the fibers of the elastic woven fabric, instead of relying on tension to flatten the fabric to assist penetration. Therefore, the entire device can operate under extremely low tension, protecting the elastic fibers in the woven fabric.

[0017] 2. Instantaneous completion: The penetration process is completed the instant (millisecond level) as the fabric passes through the roller clamping area, which is extremely efficient.

[0018] 3. Uniformity: The micro-pore array covers the entire roller surface, ensuring that the treatment liquid is injected absolutely uniformly across the fabric width, eliminating the problem of uneven treatment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a structural diagram of a hydraulic injection roller.

[0021] Figure 2 This is a cross-sectional view of the hydraulic injection roller and the pressure roller.

[0022] Figure 3 This is a diagram showing the state of a woven fabric subjected to vibration within the clamping zone.

[0023] Figure 4 for Figure 3 A magnified view of A in the middle.

[0024] Explanation of reference numerals in the attached figures:

[0025] 10. Hydraulic injection roller; 11. Roller body; 12. Cavity; 13. Jet hole; 20. Cover plate; 30. Rotary joint; 40. Pressure roller. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] like Figures 1-4 It is used to modify the ordinary pressure roller 40 into a hydraulic injection roller 10, giving it the ability to spray high-pressure micro-jet, and inject the treatment liquid directly into the fabric in the form of high-pressure micro-jet, realizing the change of the treatment liquid on the fabric from passive wetting to active forced penetration.

[0028] The hydraulic injection roller 10 includes a roller body 11, a cavity 12, and an injection hole 13. The roller body 11 is rotatably mounted on the frame of the roller press. The roller body 11 and the output shaft of the motor mounted on the roller press are connected by common connection methods such as flanges, keys, and couplings, so that the motor can drive the roller body 11 to rotate at a constant speed and in a controlled state. The cavity 12 is opened inside the roller body 11, and the injection hole (13) is opened on the roller surface of the roller body 11. The cavity 12 is connected to the external environment through the injection hole 13.

[0029] Preferably, the aperture of the jet orifice 13 is between 50 and 200 micrometers. The specific value is selected according to the type of woven fabric being processed, which will not be elaborated in this embodiment.

[0030] Preferably, the opening path of the jet hole 13 is along the radial direction of the hydraulic injection roller 10, pointing from the center of the roller body 11 to the roller surface of the roller body 11, and the opening paths are radially diverging.

[0031] Preferably, the roller body 11 has a plurality of rows of jet holes 13, and each row of jet holes 13 is located on a certain generatrix of the roller body 11.

[0032] like Figure 1 The cover plate 20 and the frame of the roller press are detachably connected by threaded fasteners. The cover plate 20 covers the roller surface of the roller body 11 in a non-completely enclosing structure to prevent the high-pressure micro-jet from being ejected from the jet hole 13 blocked by the cover plate 20. The cover plate 20 and the roller surface of the roller body 11 are fitted together.

[0033] like Figure 1The rotary joint 30 connects the hydraulic injection roller 10 and the pipeline, specifically for introducing the cleaning fluid from the pipeline into the cavity 12. The pipeline is also connected to a high-pressure pump and a tank filled with cleaning fluid. After the high-pressure pump, electrically connected to mains power, is powered on, the operator controls it to pump the cleaning fluid from the tank through the pipeline and rotary joint 30 into the cavity 12, ensuring a certain positive pressure within the cavity 12. This allows the cleaning fluid in the cavity 12 to have sufficient kinetic energy when ejected from the jet orifice 13. The rotary joint 30 is existing technology, used to provide a sealed flow-guiding connection between the rotating hydraulic injection roller 10 and the stationary pipeline.

[0034] The pressure roller 40 is connected to the pressure roller machine in an existing, rotating manner.

[0035] Specifically, in a pressure roller machine, the most common and reliable method for driving a pair of rollers (hydraulic injection roller 10 and pressure roller 40 in this embodiment) to achieve synchronous reverse rotation is to use a single motor as the power source, driven by a gear transmission system. In this embodiment, the motor's power is first transmitted to the roller body 11. Two gears of the same size and module, meshing with each other, are fixed on the roller body 11 and the pressure roller 40, respectively. Since these meshing gears are externally meshed in the transmission chain, when the roller body 11 rotates, it forces the two meshing gears to rotate at the same speed but in opposite directions, thereby achieving precise synchronous reverse rotation of the two rollers and ensuring that the woven fabric between the roller body 11 and the pressure roller 40 is uniformly compressed and free from slippage. This mechanical hard connection effectively guarantees strict synchronization. Since the above transmission method is not an improvement of this device, the existing drive structure can be used, and therefore will not be elaborated further.

[0036] The working details of this device are as follows:

[0037] S1, the elastic woven fabric is clamped between the rotating roller 11 and the pressure roller 40. The clamping has two functions: first, to provide the power for the elastic woven fabric to move forward; and second, to form a high-pressure micro-jet region between the roller 11 and the pressure roller 40.

[0038] S2, when the elastic woven fabric passes through this high-pressure micro-jet area, the high-pressure treatment liquid inside cavity 12 is ejected in the form of high-speed micro-jet through several jet holes 13 on the roller surface that are not blocked by the cover plate 20. The high-speed micro-jet has extremely high kinetic energy, and in the form of liquid needles, it instantly penetrates the oil and wax film on the fabric surface and the tight yarn structure, injecting the treatment liquid directly into the interior of the fiber bundle. This process is not a simple surface wetting, but a forced, deep physical penetration.

[0039] S3. Since the liquid is sprayed from inside the roller 11 outwards, a dynamic liquid film is formed between the elastic woven fabric and the roller surfaces of the roller 11 and the pressure roller 40. At the same time, due to the reaction force of the jet, a slight pushing and vibration effect is also generated on the fabric. When the fabric is pressed by the pressure roller 40, this micro-vibration and hydraulic action can synergistically peel off the softened oil and wax that has penetrated from the fibers, facilitating subsequent cleaning of the elastic woven fabric.

[0040] In summary, the advantages of this device are:

[0041] 1. Low tension operation: Relying on hydraulic forced penetration instead of tension to flatten the fabric to assist penetration, the entire equipment can operate under extremely low tension, protecting the elastic fibers in the woven fabric.

[0042] 2. Instantaneous completion: The penetration process is completed the instant (millisecond level) as the fabric passes through the roller clamping area, which is extremely efficient.

[0043] 3. Uniformity: The micro-pore array covers the entire roller surface of the roller body 11, ensuring that the treatment liquid is injected absolutely uniformly across the fabric width, eliminating the problem of uneven treatment.

[0044] In addition, the hydraulic injection roller 10 mentioned in this embodiment obtains the jet holes 13 by using a femtosecond / picosecond ultrafast laser to process the hollow roller surface.

[0045] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A pretreatment device for degreasing and dewaxing elastic woven fabrics, located in a chemical treatment tank, characterized in that, include: A rotatably mounted hydraulic injection roller (10) having a hollow roller body (11) and a roller surface with a plurality of jet holes (13), the roller body (11) being used to contain pressurized chemical treatment liquid, such that the chemical treatment liquid can be ejected from the roller surface at a certain pressure through the jet holes (13); and A pressure roller (40) cooperates with the hydraulic injection roller (10), and a clamping area is formed between the pressure roller (40) and the hydraulic injection roller (10) for clamping and conveying elastic woven fabric. The woven fabric passes through the clamping area and is simultaneously squeezed by the roller surfaces of the hydraulic injection roller (10) and the pressure roller (40).

2. The pretreatment equipment for degreasing and dewaxing elastic woven fabric according to claim 1, characterized in that, It also includes a high-pressure pump connected to the hollow roller body (11) for pressurizing the chemical treatment liquid inside the roller body (11), and the high-pressure pump is electrically connected to the mains power.

3. The pretreatment equipment for degreasing and dewaxing elastic woven fabric according to claim 1, characterized in that, The jet holes (13) located on the roller surface of the hydraulic injection roller (10) have a diameter between 50 micrometers and 200 micrometers.

4. The pretreatment equipment for degreasing and dewaxing elastic woven fabric according to claim 1, characterized in that, The jet holes (13) are arranged in a uniform array on the roller surface.

5. A pretreatment device for degreasing and dewaxing elastic woven fabric according to any one of claims 1-4, characterized in that, It also includes a cover plate (20) for contacting the roller surface of the roller body (11), the cover plate (20) having an opening in the direction toward the pressure roller (40), and the processing liquid inside the roller body (11) being ejected from the jet hole (13) at the opening.

6. The pretreatment equipment for degreasing and dewaxing elastic woven fabric according to claim 1, characterized in that, The surface of the pressure roller (40) is covered with an elastic material layer.

7. The pretreatment equipment for degreasing and dewaxing elastic woven fabric according to claim 1, characterized in that, It also includes a frame on which the hydraulic injection roller (10) and the pressure roller (40) are rotatably mounted.

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