Novel wear-resistant and corrosion-resistant composite papermaking felt

Abstract

The utility model relates to the technical field of papermaking felt, in particular to a novel wear-resistant and corrosion-resistant composite papermaking felt. Comprising a base cloth layer, the base cloth layer is internally provided with a self-adaptive adjusting layer used for reducing stress concentration and deformation generated in the use process of the blanket, and the outer wall of the base cloth layer is provided with a micro-nano layer used for increasing the surface roughness of the blanket. According to the novel wear-resistant and corrosion-resistant composite papermaking felt, the conditions of stress concentration and deformation of the felt in the using process can be reduced through the self-adaptive adjusting layer in the base cloth layer, and the abrasion resistance and corrosion resistance of the felt are improved through the micro-nano layer and the protective layer. The novel composite papermaking felt has the advantages that the surface roughness of the felt is increased, meanwhile, the felt is effectively prevented from being directly eroded by slurry and chemicals, the possibility of abrasion and corrosion is reduced, the service life of the novel composite papermaking felt is prolonged, and economic loss is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of papermaking felts, in particular to a new type of wear-resistant and corrosion-resistant composite papermaking felt. Background Art

[0002] At present, in our daily life, papermaking felts are special textiles used in the press section of papermaking machines. They are mainly used for dehydration, supporting paper sheets, and modifying paper sheets. Dehydration is the key function, and it has the characteristics of changing with the use time.

[0003] There are many existing technologies for composite papermaking felts, such as:

[0004] Chinese patent publication number CN212247656U discloses a three-dimensional interwoven composite papermaking felt, which includes a base fabric layer, and an elastic composite mesh layer is fixedly connected to the top of the base fabric layer. The beneficial effects achieved by the utility model are as follows: the utility model arranges water-soluble fibers inside the papermaking felt, which can be dissolved in water during the operation of the wet pressing felt, so that after the papermaking machine is quickly started, as the water-soluble fibers dissolve, the porosity of the papermaking felt can still be maintained at a certain level, thereby improving the dehydration performance stability of the papermaking felt, while also avoiding the equipment from being blocked during operation, and by arranging the elastic composite mesh layer inside the papermaking felt, the papermaking felt as a whole has lasting elasticity, further reducing the gradual deformation and collapse of the papermaking felt, and by arranging the base fabric layer, the papermaking felt has higher strength, and the adsorption force of the papermaking felt is greatly reduced, and impurities are easy to peel off, thereby greatly improving the anti-fouling effect of the papermaking felt.

[0005] It can be seen that with the development of the papermaking industry, the performance requirements for papermaking felts are getting higher and higher. Especially when dealing with slurries containing high concentrations of chemicals or abrasive particles, papermaking felts are often susceptible to wear and chemical corrosion, which not only shortens the service life of the felts, but also may affect the quality of paper production and reduce production efficiency, thereby causing economic losses.

[0006] In view of this, we propose a new type of wear-resistant and corrosion-resistant composite papermaking felt. Utility Model Content

[0007] The utility model aims to solve the above-mentioned disadvantages and provide a new type of wear-resistant and corrosion-resistant composite papermaking felt with a micro-nano layer and a protective layer to increase the surface roughness of the felt.

[0008] The adaptive adjustment layer inside the base fabric layer can reduce stress concentration and deformation of the blanket during use, and the roughness of the blanket surface can be increased through the micro-nano layer and the protective layer.

[0009] Therefore, the utility model provides a new type of wear-resistant and corrosion-resistant composite papermaking felt, which includes a base fabric layer, the interior of the base fabric layer is provided with an adaptive adjustment layer for reducing stress concentration and deformation of the felt during use, the outer wall of the base fabric layer is provided with a micro-nano layer for increasing the surface roughness of the felt, and at the same time, the micro-nano layer is used to improve the friction and wear resistance with the slurry, and the outside of the micro-nano layer is provided with a protective layer for effectively preventing the slurry and chemicals from directly corroding the felt.

[0010] As a further improvement of the present technical solution, the base fabric layer includes at least a middle layer, an inner layer is arranged inside the middle layer, an outer layer is arranged outside the middle layer, and the middle layer, inner layer and outer layer are all connected by a three-dimensional mesh structure.

[0011] As a further improvement of the technical solution, the inner layer is made of corrosion-resistant fiber, and the outer layer is made of high-strength fiber.

[0012] As a further improvement of the technical solution, the adaptive adjustment layer is made of elastic material and is used to change according to the tension and temperature during the working process.

[0013] As a further improvement of the technical solution, the protective layer is provided with a plurality of micropores.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In this new wear-resistant and corrosion-resistant composite papermaking felt, the adaptive adjustment layer inside the base fabric layer can reduce stress concentration and deformation of the felt during use, and the micro-nano layer and the protective layer can increase the roughness of the felt surface. At the same time, it can effectively prevent the slurry and chemicals from directly eroding the felt, reduce the possibility of wear and corrosion, and increase the service life of the new composite papermaking felt, thereby avoiding economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is described in more detail below by way of example with reference to the accompanying drawings, in which:

[0017] Figure 1 This is a schematic diagram of the structure of the novel composite papermaking felt of the utility model;

[0018] Figure 2 This is a schematic diagram of the base fabric layer structure of the utility model;

[0019] Figure 3 For the utility model Figure 1 Enlarged structural diagram at A in the middle.

[0020] The meaning of each number in the figure is:

[0021] 10. Base fabric layer; 11. Middle layer; 12. Inner layer; 13. Outer layer; 14. Three-dimensional mesh structure;

[0022] 20. Adaptive adjustment layer; 21. Micro-nano layer; 22. Protective layer; 23. Micropores. DETAILED DESCRIPTION

[0023] With the development of papermaking industry, the performance requirements for papermaking felts are getting higher and higher. Especially when dealing with slurries containing high concentrations of chemicals or abrasive particles, papermaking felts are often susceptible to wear and chemical corrosion, which not only shortens the service life of the felts, but also may affect the quality of paper production and reduce production efficiency, thus causing economic losses.

[0024] See also Figure 1-Figure 3 The embodiment of the utility model shown in the figure comprises a base fabric layer 10, an adaptive adjustment layer 20 is arranged inside the base fabric layer 10 for reducing stress concentration and deformation of the felt during use, a micro-nano layer 21 is arranged on the outer wall of the base fabric layer 10 for increasing the surface roughness of the felt, and at the same time, the micro-nano layer 21 is used to improve the friction and wear resistance with the slurry, and a protective layer 22 is arranged outside the micro-nano layer 21 for effectively preventing the slurry and chemicals from directly corroding the felt.

[0025] First, the specific structure of the base fabric layer 10 is disclosed. The base fabric layer 10 at least includes a middle layer 11. An inner layer 12 is arranged inside the middle layer 11. An outer layer 13 is arranged outside the middle layer 11. The middle layer 11, the inner layer 12 and the outer layer 13 are connected by a three-dimensional network structure 14.

[0026] The improvement lies in that the middle layer 11, the inner layer 12 and the outer layer 13 are connected by a three-dimensional mesh structure 14, which is beneficial to increase the connection points between the fibers. At the same time, it improves the stability and durability of the overall structure of the new composite papermaking felt, and can also effectively disperse the stress during the working process, reduce the possibility of wear and corrosion, and increase the service life of the new composite papermaking felt, thereby avoiding economic losses.

[0027] Considering that the new composite papermaking felt may rot and mold when used in a high humidity environment, which reduces the practicality of the new composite papermaking felt and causes economic losses, the inner layer 12 uses corrosion-resistant fibers and the outer layer 13 uses high-strength fibers.

[0028] The improvements are as follows: the outer layer 13 adopts high-strength fibers, such as glass fibers or carbon fibers, to enhance the wear resistance of the new composite papermaking felt; the inner layer 12 adopts corrosion-resistant fibers, such as polytetrafluoroethylene PTFE or polyimide PI, to improve the corrosion resistance of the new composite papermaking felt, which is beneficial to improving the production reliability of the new composite papermaking felt and reducing the production cost, thereby avoiding economic losses.

[0029] In order to prevent the new composite papermaking felt from deforming during use, which would affect the use effect of the new composite papermaking felt, the adaptive adjustment layer 20 is made of elastic material and is used to adjust according to the tension and temperature changes during the working process.

[0030] The improvement lies in that the adaptive adjustment layer 20 is made of elastic material, which helps the new composite papermaking felt to adaptively adjust the shape and performance of the new composite papermaking felt according to the tension and temperature changes during the working process, further improve the wear resistance and corrosion resistance, and thus increase the service life of the new composite papermaking felt.

[0031] Since the new composite papermaking felt needs to be cleaned after being used for a certain period of time, in order to improve the air permeability and water absorption of the new composite papermaking felt, a plurality of micropores 23 are provided in the protective layer 22 .

[0032] The improvement lies in that: by setting up a plurality of micropores 23, it is helpful to improve the air permeability and water absorption of the new composite papermaking felt; it is also helpful to reduce the accumulation of moisture on the surface of the felt, reduce the risk of corrosion of the new composite papermaking felt, and promote the uniform distribution and rapid drainage of slurry on the surface of the felt and improve the quality of the new composite papermaking felt, while also improving the production efficiency of the new composite papermaking felt, thereby increasing the service life of the new composite papermaking felt.

[0033] In summary, the working principle of the present scheme is as follows: first, through the operation of the papermaking machine, the middle layer 11, the inner layer 12 and the outer layer 13 are connected and sewed using a three-dimensional mesh structure 14, and then an adaptive adjustment layer 20 is manufactured between the middle layer 11, the inner layer 12 and the outer layer 13, and then the outside of the base fabric layer 10 is wrapped by the micro-nano layer 21, and then a protective layer 22 is manufactured on the outside of the micro-nano layer 21, and a number of micropores 23 are evenly opened on the protective layer 22, and the manufacture of the new composite papermaking felt is completed.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A novel wear-resistant and corrosion-resistant composite papermaking felt, comprising a base fabric layer (10), characterized in that: The base fabric layer (10) is provided with an adaptive adjustment layer (20) for reducing stress concentration and deformation of the felt during use, and the outer wall of the base fabric layer (10) is provided with a micro-nano layer (21) for increasing the surface roughness of the felt. The micro-nano layer (21) is used to improve the friction and wear resistance with the slurry, and the outside of the micro-nano layer (21) is provided with a protective layer (22) for effectively preventing the slurry and chemicals from directly corroding the felt.

2. The wear-resistant and corrosion-resistant new composite papermaking felt according to claim 1, characterized in that: The base fabric layer (10) comprises at least an intermediate layer (11), an inner layer (12) is arranged inside the intermediate layer (11), an outer layer (13) is arranged outside the intermediate layer (11), and the intermediate layer (11), the inner layer (12) and the outer layer (13) are all connected via a three-dimensional mesh structure (14).

3. The wear-resistant and corrosion-resistant new composite papermaking felt according to claim 2, characterized in that: The inner layer (12) is made of corrosion-resistant fiber, and the outer layer (13) is made of high-strength fiber.

4. The wear-resistant and corrosion-resistant new composite papermaking felt according to claim 1, characterized in that: The self-adaptive adjustment layer (20) is made of elastic material and is used to adjust according to tension and temperature changes during operation.

5. The wear-resistant and corrosion-resistant new composite papermaking felt according to claim 1 is characterized in that: The protective layer (22) is provided with a plurality of micropores (23).

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