Preparation device of flame-retardant velvet fabric

Abstract

This utility model discloses a device for preparing flame-retardant velvet fabric, including an impregnation tank, a third guide roller arranged on the top inner side of the impregnation tank, and an extrusion assembly arranged behind the top inner side of the impregnation tank. The extrusion assembly includes a chute, a sliding frame and a sliding component slidably arranged inside the chute, an extrusion roller rotatably arranged in front of the sliding frame, a spring arranged in front of the sliding component, a support frame arranged on the top of the impregnation tank, and mounting frames arranged on the front and rear sides of the support frame. A heating plate is arranged inside the mounting frames. This utility model: the device guides the fabric to be fully impregnated with flame retardant solution through the guide roller assembly, uses bolts to drive the sliding component and sliding frame to extend and retract, and the spring pushes the sliding frame to make the extrusion roller extrude the fabric, effectively squeezing out excess free flame retardant remaining in the fabric, reducing the risk of flame retardant dripping due to gravity during fabric removal and transportation from the source; the extruded fabric is then dried by the heating plate.

Description

Technical Field

[0001] This utility model relates to the field of flame-retardant velvet fabric preparation technology, specifically a flame-retardant velvet fabric preparation device. Background Technology

[0002] Flame-retardant velvet fabric is made from velvet greige fabric as a base. The core technology is to impart flame-retardant properties to it through a post-treatment impregnation process. Specifically, the woven velvet greige fabric is first pre-treated to remove oil and impurities to improve fiber adsorption. Then, the greige fabric is immersed in an aqueous solution containing highly efficient flame retardants such as phosphorus-based and nitrogen-based ones. Through impregnation equipment, the flame retardants are made to penetrate evenly into the fibers and adhere to the fabric surface. Subsequently, drying and high-temperature curing treatments are performed to allow the flame retardants to form a stable bond with the fibers. The final product retains the soft texture and full pile characteristics of velvet fabric, while also possessing properties such as being difficult to ignite when exposed to fire, low smoke and low toxicity, and long-lasting flame retardant effect. It is suitable for application scenarios such as workwear and home decoration where flame retardancy is required.

[0003] However, after the existing velvet fabric completes the impregnation process, due to the large gaps between the fibers and the loose, porous structure of the pile, it easily absorbs a large amount of free flame retardant. This flame retardant fails to form a stable bond with the fibers, and some remains inside the fibers and in the gaps of the pile. During the process of removing the fabric from the impregnation solution and transferring it, the residual flame retardant drips off due to gravity, causing unnecessary waste of the flame retardant and directly increasing production costs. It also drips onto equipment surfaces and production areas, contaminating equipment parts and affecting the cleanliness of the production environment, adding an extra burden to subsequent cleaning work. Utility Model Content

[0004] The purpose of this invention is to provide a device for preparing flame-retardant velvet fabric, in order to solve the problem mentioned in the background art that the residual flame retardant will drip off due to gravity as the fabric moves during the subsequent transfer process after the fabric is taken out of the impregnation liquid.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An apparatus for preparing flame-retardant velvet fabric includes an impregnation tank, a third guide roller is provided on the top inner side of the impregnation tank, and an extrusion assembly is provided behind the top inner side of the impregnation tank.

[0007] The extrusion assembly includes a chute, inside which a sliding frame and a sliding component are slidably disposed. An extrusion roller is rotatably disposed in front of the sliding frame, and a spring is disposed in front of the sliding component. A support frame is disposed on the top of the impregnation tank, and mounting frames are disposed on the front and rear sides of the support frame. A heating plate is disposed inside the mounting frames.

[0008] In a preferred embodiment of the present invention, a first guide roller is rotatably arranged at the bottom inner side of the impregnation tank, and a second guide roller is rotatably arranged at the front top of the impregnation tank.

[0009] In a preferred embodiment of the present invention, the second guide roller is located above and slightly forward of the first guide roller, and the third guide roller is located above and slightly backward of the second guide roller.

[0010] In a preferred embodiment of this utility model, the third guide roller is located directly in front of the extrusion roller, the sliding frame is located directly in front of the sliding member, and the spring is connected to the sliding frame in front.

[0011] In a preferred embodiment of the present invention, a threaded opening is provided through the rear top of the impregnation tank, and a bolt is provided inside the threaded opening.

[0012] In a preferred embodiment of this utility model, the bolt is threaded to the screw hole, and the front of the bolt is rotatably connected to the sliding member.

[0013] In a preferred embodiment of this utility model, a fourth guide roller is rotatably arranged on the inner side of the top of the support frame, the heating surface of the front heating plate faces the rear, and the heating surface of the rear heating plate faces the front.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0015] Beneficial effects: This device guides the fabric to be fully impregnated with flame retardant solution using guide rollers. Bolts drive the sliding parts and sliding frame to extend and retract, and springs push the sliding frame to cause the extrusion rollers to squeeze the fabric, effectively squeezing out excess free flame retardant remaining in the fabric. This reduces the risk of flame retardant dripping due to gravity during fabric removal and transport. Subsequently, the extruded fabric is dried by a heating plate to further remove any remaining flame retardant, minimizing leakage. The extruded flame retardant can be returned to the impregnation tank for reuse, reducing waste and lowering production costs. It also prevents flame retardant drips from contaminating the equipment surface and production area, reducing the burden of subsequent cleaning and ensuring a clean production environment.

[0016] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the main structure of a device for preparing a flame-retardant velvet fabric.

[0019] Figure 2 This is a schematic diagram of the impregnation tank structure in a flame-retardant velvet fabric preparation device.

[0020] Figure 3 This is a schematic cross-sectional view of a device for preparing a flame-retardant velvet fabric.

[0021] Figure 4 This is a schematic diagram of the sliding frame, sliding parts, and bolt connection structure in a device for preparing a flame-retardant velvet fabric.

[0022] In the diagram: 1. Impregnation tank; 11. First guide roller; 12. Second guide roller; 13. Third guide roller; 14. Slide groove; 15. Threaded joint; 2. Sliding frame; 21. Sliding component; 22. Extrusion roller; 23. Spring; 24. Bolt; 3. Support frame; 31. Fourth guide roller; 32. Mounting frame; 33. Heating plate. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] Please refer to Figures 1-4 This utility model discloses a device for preparing flame-retardant velvet fabric, including an impregnation tank 1. The impregnation tank 1 is made of 304 stainless steel, which has the characteristics of corrosion resistance and high strength. It is used to hold a flame retardant solution, which is an aqueous solution containing a phosphorus-based and nitrogen-based composite flame retardant. The solution must cover the first guide roller 11, and the liquid level must be lower than the third guide roller 13 to ensure that the fabric is fully impregnated and to prevent the solution from overflowing. A support frame 3 made of Q235 carbon steel is fixedly connected to the top of the impregnation tank 1. This support frame 3 serves as an installation structure for fixing and connecting other components.

[0025] A first guide roller 11 is rotatably mounted on the bottom inner side of the impregnation tank 1. A second guide roller 12 is rotatably mounted on the front top of the impregnation tank 1. A third guide roller 13 is mounted on the top inner side of the impregnation tank 1. The first guide roller 11, the second guide roller 12, and the third guide roller 13 are all made of No. 45 steel and have been chrome-plated for strong wear resistance. The third guide roller 13 is located at the rear, the second guide roller 12 is located above and slightly in front of the first guide roller 11, and the third guide roller 13 is located above and slightly behind the second guide roller 12. A fourth guide roller 31 is rotatably mounted on the inner top of the support frame 3. The fourth guide roller 31 is made of the same material as the first guide roller 11. When the velvet fabric enters the impregnation tank 1, it sequentially contacts the rear of the second guide roller 12, the bottom of the first guide roller 11, the rear of the third guide roller 13, and the front of the fourth guide roller 31 to achieve stable transmission.

[0026] An extrusion assembly is located at the rear top of the inner side of the impregnation tank 1. The extrusion assembly includes a chute 14, which is a rectangular groove structure located at the rear top of the inner side of the impregnation tank 1. A sliding frame 2 and a sliding component 21 are slidably arranged inside the chute 14. Both the sliding frame 2 and the sliding component 21 are made of high-strength aluminum alloy. An extrusion roller 22 is rotatably arranged in front of the sliding frame 2. The extrusion roller 22 is made of 45# steel inside and nitrile rubber on the outer surface, which has good elasticity and wear resistance. A third guide roller 13 is located directly in front of the extrusion roller 22. The sliding frame 2 is located directly in front of the sliding component 21. A spring 23 is arranged in front of the sliding component 21. The spring 23 is a GB / T2089-2009 cylindrical helical compression spring made of piano wire, which has good elastic recovery performance. The spring 23 is connected to the sliding frame 2 in front, providing stable extrusion force for the extrusion roller 22. A threaded hole 15 is provided through the top rear of the impregnation tank 1. The threaded hole 15 is an M20 standard threaded hole. A bolt 24 is provided inside the threaded hole 15. The bolt 24 is an M20×50 stainless steel hex bolt. The bolt 24 is threadedly connected to the threaded hole 15. The front of the bolt 24 is rotatably connected to the sliding member 21. The bolt 24 is used to drive the sliding member 21 and the sliding frame 2 to extend and retract, thereby adjusting the extrusion force of the extrusion roller 22.

[0027] The support frame 3 is fixedly connected to the mounting frame 32 on both the front and rear sides. The mounting frame 32 is an aluminum alloy frame structure. The heating plate 33 is fixedly connected inside the mounting frame 32. The heating plate 33 is a far-infrared heating plate, model YHR-200, with a rated power of 200W. The heating surface of the front heating plate 33 faces the rear, and the heating surface of the rear heating plate 33 faces the front. A controller is set on one side of the support frame 3 to control the heating plates 33 on both sides, so as to realize temperature adjustment and start / stop operation.

[0028] The working principle of this utility model is as follows: After the velvet fabric is pretreated to remove oil and impurities, it sequentially contacts the top of the second guide roller 12, the bottom of the first guide roller 11, the rear of the third guide roller 13, and the front of the fourth guide roller 31 along a preset path. Under the guidance of the guide roller group, it enters the flame retardant aqueous solution in the impregnation tank 1 for full impregnation. The bolt 24 is rotated, and the threaded engagement between the bolt 24 and the screw 15 drives the sliding part 21 to slide along the slide groove 14. The sliding part 21 pushes the spring 23, and the spring 23 further pushes the sliding frame 2, so that the extrusion roller 22 moves closer to the third guide roller 13 and extrudes the impregnated fabric, squeezing out the excess free flame retardant remaining in the fabric. After the excess flame retardant is squeezed out, the fabric continues to be conveyed by the fourth guide roller 31 and passes between the heating plates 33 on both sides of the support frame 3. The controller starts the heating plates 33 to dry the fabric, and finally completes the impregnation, liquid control, and drying process of the flame retardant velvet fabric.

[0029] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An apparatus for preparing flame-retardant velvet fabric, characterized in that: It includes an impregnation tank (1), a third guide roller (13) is provided on the top inner side of the impregnation tank (1), and an extrusion assembly is provided behind the top inner side of the impregnation tank (1); The extrusion assembly includes a chute (14), inside which a sliding frame (2) and a sliding member (21) are slidably arranged. An extrusion roller (22) is rotatably arranged in front of the sliding frame (2), and a spring (23) is arranged in front of the sliding member (21). A support frame (3) is arranged on the top of the impregnation tank (1), and mounting frames (32) are arranged on the front and rear sides of the support frame (3). A heating plate (33) is arranged inside the mounting frame (32).

2. The apparatus for preparing flame-retardant velvet fabric according to claim 1, characterized in that, The bottom inner side of the impregnation tank (1) is provided with a first guide roller (11), and the top front of the impregnation tank (1) is provided with a second guide roller (12).

3. The apparatus for preparing flame-retardant velvet fabric according to claim 2, characterized in that, The second guide roller (12) is located above and slightly forward of the first guide roller (11), and the third guide roller (13) is located above and slightly backward of the second guide roller (12).

4. The apparatus for preparing flame-retardant velvet fabric according to claim 1, characterized in that, The third guide roller (13) is located directly in front of the extrusion roller (22), the sliding frame (2) is located directly in front of the sliding member (21), and the spring (23) is connected to the sliding frame (2) in front.

5. The apparatus for preparing flame-retardant velvet fabric according to claim 1, characterized in that, A threaded opening (15) is provided through the rear top of the impregnation tank (1), and a bolt (24) is provided inside the threaded opening (15).

6. The apparatus for preparing flame-retardant velvet fabric according to claim 5, characterized in that, The bolt (24) is threaded to the screw hole (15), and the front of the bolt (24) is rotatably connected to the sliding member (21).

7. The apparatus for preparing flame-retardant velvet fabric according to claim 1, characterized in that, The support frame (3) has a fourth guide roller (31) rotatably mounted on the inner side of its top. The heating surface of the front heating plate (33) faces the rear, and the heating surface of the rear heating plate (33) faces the front.

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