Round glass fiber honeycomb carrier for skin grafting on outer layer

Abstract

The utility model discloses a circular glass fiber honeycomb carrier with skin grafted on the outer layer, which relates to the technical field of catalyst carriers and comprises a glass fiber honeycomb carrier and a pug skin grafted layer on the outer layer of the glass fiber honeycomb carrier, the glass fiber honeycomb carrier is formed by winding glass fiber paper, the outermost layer of the glass fiber honeycomb carrier is coated with pug, and the pug skin grafted layer is coated on the outer layer of the glass fiber honeycomb carrier. The pug permeates into the outer-layer glass fiber paper and is combined with fibers in the glass fiber honeycomb carrier, and the pug on the periphery of the carrier is dried and cured to form a pug skin grafting layer. The outer layer of the glass fiber honeycomb carrier is coated with the pug skin grafting layer, the structural strength of the glass fiber honeycomb carrier is enhanced, the peripheral contour of the pug skin grafting layer is an overall continuous curved surface, the boss height difference formed by cutting glass fiber paper is eliminated through the pug skin grafting layer, the roundness of the overall structure of the carrier is guaranteed, and the service life of the carrier is prolonged. Therefore, the boundary dimension accuracy of the carrier is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of catalyst carriers, in particular to a circular glass fiber honeycomb carrier with an outer skin grafting. Background Art

[0002] The catalyst carrier is used to carry and disperse the matrix material of the catalytic active ingredients. The catalyst is coated and fixed on the surface tissue of the carrier, forming a large number of catalytic active sites on the microstructure of the surface tissue. When the exhaust gas containing harmful substances passes through the catalyst surface, the exhaust gas molecules come into contact with the catalytic active substances, a catalytic reaction occurs, and the harmful substances in the exhaust gas are eliminated.

[0003] Commonly used catalyst carriers include glass fiber honeycomb carriers and cordierite honeycomb carriers. Glass fiber honeycomb carriers have a large specific surface area, high air permeability, and good water absorption. Under the same catalytic performance, the amount of carrier used is smaller than that of cordierite.

[0004] In the prior art, the glass fiber honeycomb carrier is made of glass fiber paper. However, when it is wound to the outermost side, if the outermost layer of fiber paper is not reliably bonded and fixed, the overall structural strength of the carrier is poor and there is a risk of looseness. At the same time, a boss will be generated at the cutting point of the outermost layer of fiber paper, which will cause the roundness of the carrier shape to be poor and affect the accuracy of the carrier shape and size. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that when the outermost layer of fiber paper is wound to the outermost side, if the bonding and fixing of the outermost layer is not reliable, the overall structural strength of the carrier is poor and there is a risk of looseness. A circular glass fiber honeycomb carrier grafted with an outer layer of mud is proposed.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a circular glass fiber honeycomb carrier with an outer skin grafting, including a glass fiber honeycomb carrier and an outer mud skin grafting layer thereof, the glass fiber honeycomb carrier is formed by winding glass fiber paper, the outermost layer of the glass fiber honeycomb carrier is brushed with mud, and the mud penetrates into the outer layer of glass fiber paper and combines with the fibers in the glass fiber honeycomb carrier, the mud on the periphery of the carrier is dried and solidified to form a mud skin grafting layer, and the mud material used for the outer skin grafting is cordierite, kaolin, silicon carbide, alumina, glass fiber, silica sol, or a mixture of one or more inorganic raw materials above.

[0007] Preferably, the outer peripheral contour of the clay grafting layer is an overall continuous curved surface.

[0008] Preferably, after the glass fiber honeycomb carrier is wound, the end of the glass fiber paper is cut and attached to the outside of the circular carrier to form a boss. The mud material is hardened after drying, sintering and other processes, and its inner circle forms a groove corresponding to the shape of the boss. The mud material is brushed to fill the defects at the outermost boss and eliminate the height difference.

[0009] Preferably, the curvatures of the outer side walls of the clay-grafted layers are all equal, and the outer layer of the glass fiber honeycomb carrier is finally in a standard circular shape after the clay-grafted carrier.

[0010] Compared with the prior art, the advantages and positive effects of the utility model are:

[0011] 1. In the utility model, a clay grafting layer is coated on the outer layer of the glass fiber honeycomb carrier, and the outer peripheral contour of the clay grafting layer is an overall continuous curved surface. The clay grafting layer is utilized to eliminate the height difference of the boss formed by cutting the glass fiber paper, thereby ensuring the roundness of the overall structure of the carrier, thereby improving the accuracy of the outer dimensions of the carrier.

[0012] 2. In the utility model, the glass fiber paper is coated with glue while being wound by an automatic gluing and winding machine. After the carrier is wound, mud is brushed and wrapped on the outer layer of the carrier layer by layer. The mud penetrates into the outer layer of glass fiber paper and combines with the fibers in the carrier. The mud fills the bosses to further fix and strengthen the overall structure of the glass fiber honeycomb carrier.

[0013] 3. In the present invention, the boss is eliminated by using the clay grafting layer, so that the subsequent catalyst coating accuracy is better.

[0014] 4. In the utility model, after forming by using processes such as drying and sintering, the structure of the clay skin layer is hardened. After the skin layer is dried and hardened, the subsequent carrier packaging strength is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model provides a schematic diagram of the planar structure of a circular glass fiber honeycomb carrier with an outer skin graft before the skin grafting;

[0016] Figure 2 The utility model provides a schematic diagram of the planar structure of a circular glass fiber honeycomb carrier with an outer skin grafted after the skin grafting;

[0017] Figure 3 The utility model provides a side cross-sectional view of a circular glass fiber honeycomb carrier with an outer skin graft;

[0018] Figure 4 The utility model provides a structural schematic diagram of a mud material skin grafting in a circular glass fiber honeycomb carrier with an outer skin grafting.

[0019] Legend: 1. Boss; 2. Glass fiber honeycomb carrier; 3. Mud grafting layer. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0022] Embodiment 1

[0023] like Figure 1-4 As shown, the utility model provides a circular glass fiber honeycomb carrier with an outer skin grafting, including a glass fiber honeycomb carrier 2, the glass fiber honeycomb carrier 2 is formed by winding glass fiber paper, the glass fiber honeycomb carrier 2 is spiral-shaped, the outer layer of the glass fiber honeycomb carrier 2 is coated with a mud skin grafting layer 3, and the mud skin grafting layer 3 penetrates into the outer layer of glass fiber paper and combines with the fibers in the glass fiber honeycomb carrier 2.

[0024] The specific configuration and function of this embodiment are described in detail below. In actual engineering applications, a glass fiber honeycomb carrier 2 is used to replace a carrier made of cordierite or other materials. The glass fiber honeycomb carrier 2 has a large specific surface area, high air permeability, and good water absorption. With the same catalytic performance, the amount of the glass fiber carrier is less and the air velocity is greater.

[0025] The glass fiber honeycomb carrier 2 is easy to process and shape. The raw material of the glass fiber honeycomb carrier 2 is glass fiber paper. When making a circular carrier, an automatic gluing and winding machine is used to gluing the glass fiber paper while winding it. The outer layer of the carrier is grafted with mud, and then dried and sintered to increase the structural strength of the carrier.

[0026] Glass fiber honeycomb carriers 2 of different diameters can be processed and manufactured. The diameter of the carrier can be customized according to the needs. Different types of catalysts are coated on the surface of the circular carrier, and the corresponding materials are coated according to the actual use requirements.

[0027] When the glass fiber paper is wound to the outermost layer, the fiber paper is cut to form a boss 1 at the end of the fiber paper. Therefore, a mud grafting layer 3 is coated on the outer layer of the glass fiber honeycomb carrier 2. The mud grafting layer 3 forms a circular ring tightly wrapped around the outer side of the glass fiber honeycomb carrier 2, which not only eliminates the step height difference of the boss 1 formed at the cutting point of the fiber paper, but also ensures the roundness of the carrier shape, thereby optimizing the accuracy of the carrier shape dimensions.

[0028] Embodiment 2

[0029] like Figure 2 and Figure 4 As shown, one end of the glass fiber honeycomb carrier 2 is attached to the outside of the circular carrier and forms a boss 1. After the glass fiber honeycomb carrier 2 is skinned with mud, the mud is brushed to fill the defects at the outermost boss 1 and eliminate the height difference. The mud material used for the outer skin grafting is cordierite, kaolin, silicon carbide, alumina, glass fiber, silica sol, or a mixture of one or more inorganic raw materials. After the outer layer of the glass fiber honeycomb carrier 2 is brushed with mud for skin grafting, it is dried, sintered, and other processes to harden the mud grafting layer 3 and fix it on the outer layer of the carrier to merge with the carrier as a whole. After the glass fiber honeycomb carrier 2 is skinned with mud, the outer layer is finally a standard circle.

[0030] The effect achieved by the whole embodiment is that after the round carrier is formed by winding and molding with glue, a layer of clay is wrapped on the outer layer, which is called skin grafting. After the clay skin grafting layer 3 is dried, sintered and other processes, the structure is hardened, and the inner circle forms a groove corresponding to the shape of the boss 1;

[0031] Since the outer circle curvature of the clay graft layer 3 is the same, the outer circle of the clay graft layer 3 is a standard circle, and the thickness of the clay graft layer 3 gradually increases from the thinnest part of the boss 1 around a circle until it is connected to form a ring at the thickest part of the boss 1;

[0032] The grafted skin is dried, sintered and hardened, tightly wrapping the glass fiber honeycomb carrier 2 to improve the strength of the outer layer, so that the internal strength of the carrier is better and not easy to loosen; at the same time, the height difference of the boss 1 is eliminated through mud filling, the roundness of the outer layer of the carrier is better, and the problem of leakage of subsequent catalyst coating is also solved.

[0033] The use method and working principle of the device: the glass fiber paper is wound while being glued by an automatic gluing and winding machine. During the glass fiber paper winding process, the glass fiber paper is finally wound into a spiral pattern to form a glass fiber honeycomb carrier 2;

[0034] Then, the outermost layer of glass fiber paper is cut and attached to the outer periphery of the glass fiber honeycomb carrier 2 to form a boss 1, and a layer of mud is coated on the outer periphery of the glass fiber honeycomb carrier 2 by a glue winding machine. The mud forms a step height difference of different heights on the left and right at the boss 1, filling the defects formed by cutting the outermost layer of glass fiber paper of the carrier. The mud forms a stable mud grafting layer 3 to ensure that the outer circle curvature of the mud grafting layer 3 is the same;

[0035] Finally, after being formed by drying, sintering and other processes, the structure of the clay grafting layer 3 is hardened, thereby strengthening the overall structure of the glass fiber honeycomb carrier 2.

[0036] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A circular glass fiber honeycomb carrier with an outer skin graft, comprising a glass fiber honeycomb carrier (2), wherein the glass fiber honeycomb carrier (2) is formed by winding glass fiber paper, and characterized in that: The outermost layer of the glass fiber honeycomb carrier (2) is coated with mud, and the mud penetrates into the outer layer of glass fiber paper and combines with the fibers in the glass fiber honeycomb carrier (2), and the mud on the periphery of the carrier forms a mud graft layer (3).

2. The circular glass fiber honeycomb carrier with an outer skin graft according to claim 1, characterized in that: The outer peripheral contour of the clay grafting layer (3) is an overall continuous curved surface.

3. The circular glass fiber honeycomb carrier with outer skin grafting according to claim 1, characterized in that: After the glass fiber honeycomb carrier (2) is wound, the end of the glass fiber paper is sheared and attached to the outside of the circular carrier to form a boss (1).

4. The circular glass fiber honeycomb carrier with outer skin grafting according to claim 2, characterized in that: After the glass fiber honeycomb carrier (2) is skinned with mud, the outer layer of the carrier finally has a standard circular shape.

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