A non-metallic flexible sealing belt

Abstract

The present invention relates to a non-metallic flexible sealing belt, which is composed of a heat-insulating layer, a wear-resistant layer, a silicone layer and a protective layer. The silicone layer is coated on the outer periphery of the wear-resistant layer by bonding with an adhesive. Two corresponding sides of the silicone layer are respectively provided with grooves. The heat-insulating layer is bonded in one of the grooves by an adhesive, and the protective layer is bonded in the other groove by an adhesive. The heat-insulating layer, the protective layer and the grooves are of the same height. The present invention compounds the heat-insulating layer, the wear-resistant layer, the silicone layer and the protective layer by an adhesive during the high-temperature vulcanization stage of silicone rubber, so that the non-metallic flexible sealing belt will not crack within one year when in use, thereby increasing the service life of the non-metallic flexible belt. The heat-insulating layer enables the sealing belt to isolate the temperature of a part of the fan, so as to increase the service life of the sealing belt.

Description

Technical Field

[0001] The invention relates to a sealing belt, in particular to a non-metallic flexible sealing belt. Background Art

[0002] Our company has applied for the invention patent "Sintering Machine Trolley Slide Sealing Device" with patent number: ZL201610263323.9 and the patent "Sintering Machine Non-metallic Flexible Slide Sealing Device" which is being applied for. Both patents mentioned a non-metallic flexible sealing belt. Through the user experience during a period of use, the R&D personnel found that the performance of the sealing belt determines the use effect of the sintering machine slide sealing device. The above-mentioned non-metallic flexible sealing belt cannot adapt to the complex working conditions on site. For example, after a period of use (usually a few months), the sealing belt cracks, causing air leakage at the sintering machine slide, resulting in frequent replacement of the sealing belt, and the side of the sealing belt facing the fan needs to withstand a certain high temperature. Therefore, it is necessary to produce a sealing belt that can adapt to such complex working conditions. Summary of the invention

[0003] The main purpose of the present invention is to provide a non-metallic flexible sealing belt. After continuous testing and improvement by R&D personnel, a sealing belt product that can meet user requirements has finally been developed. This sealing belt is composed of multiple material layers and can be applied to sintering machine non-metallic slideway sealing, belt cooling machine sealing, ring cooling machine sealing and other fields, which are not listed one by one.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a non-metallic flexible sealing belt, which consists of a heat insulation layer, a wear-resistant layer, a silicone layer and a protective layer. The silicone layer is coated on the outer periphery of the wear-resistant layer by bonding with an adhesive. Grooves are respectively provided on the corresponding sides of the silicone layer. The heat insulation layer is bonded to one of the grooves by an adhesive, and the protective layer is bonded to the other groove by an adhesive. The heat insulation layer, the protective layer and the groove are at the same height.

[0005] Preferably, the heat insulating layer is a ceramic fiber layer, the wear-resistant layer is an aramid layer, and the protective layer is an aramid layer.

[0006] Preferably, the thickness of the adhesive is 13 μm-15 μm, and the adhesive is resistant to high temperatures of 400 to 500 degrees.

[0007] Preferably, first sealing protrusions are fixedly provided at two corners on one side of the silicone layer, and second sealing protrusions are fixedly provided at the other two corners on the other side of the silicone layer.

[0008] Further preferably, the first sealing protrusion includes a first inclined plane, a second inclined plane, a third straight plane and a fourth inclined plane connected to each other, the angle between the first inclined plane and one side of the silicone layer is an obtuse angle, the angle between the first inclined plane and the second inclined plane is an obtuse angle, and the fourth inclined plane is parallel to the second inclined plane.

[0009] More preferably, when the non-metallic flexible sealing tape is in use, when the first inclined surface is pressed downward, the second inclined surface and a portion of the first inclined surface are in the same plane.

[0010] Further preferably, the second sealing protrusion includes a fifth straight surface, a sixth inclined surface, a seventh straight surface and an eighth inclined surface which are connected to each other, the angle between the fifth straight surface and the other surface of the silicone layer is a right angle, the angle between the sixth inclined surface and the fifth straight surface is an acute angle, and the eighth inclined surface and the sixth inclined surface are parallel to each other.

[0011] More preferably, when the non-metallic flexible sealing strip is in use, the sixth inclined surface and the fifth straight surface are in the same plane.

[0012] More preferably, strip grooves are obliquely arranged on both sides of the silicone layer bonded with the heat insulation layer and the protective layer, and the strip grooves are close to the side edges of the silicone layer.

[0013] The beneficial effects of the present invention are as follows: the present invention compounds the heat-insulating layer, the wear-resistant layer, the silicone layer and the protective layer through an adhesive during the high-temperature vulcanization stage of the silicone rubber, so that the non-metallic flexible sealing belt does not crack within one year when in use, thereby increasing the service life of the non-metallic flexible belt. The heat-insulating layer enables the sealing belt to isolate a portion of the fan temperature, thereby increasing the service life of the sealing belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0015] Figure 1 It is a structural schematic diagram of the non-metallic flexible sealing belt of the present invention;

[0016] Figure 2 yes Figure 1 A magnified view of part A;

[0017] Figure 3 yes Figure 2 Schematic diagram of deformation of part A during use;

[0018] Figure 4 yes Figure 1 A magnified view of part B;

[0019] Figure 5 yes Figure 4 Schematic diagram of the deformation of part B during use.

[0020] Description of Reference Numerals

[0021] 10. Protective layer; 20. Silicone layer; 30. Wear-resistant layer; 40. Heat-insulating layer;

[0022] 21. One side of the silicone layer; 22. The other side of the silicone layer; 25. Strip grooves;

[0023] 100, first sealing protrusion; 110, first inclined surface; 120, second inclined surface;

[0024] 130, third straight surface; 140, fourth inclined surface;

[0025] 200, second sealing protrusion; 210, fifth straight surface; 220, sixth inclined surface;

[0026] 230, seventh straight plane; 240, eighth inclined plane;

[0027] a: Angle between the first inclined surface and one side of the silicone layer;

[0028] b: the angle between the second inclined plane and the first inclined plane;

[0029] c: the angle between the fifth straight surface and the sixth inclined surface;

[0030] 1. Upward slide; 2. Downward slide. DETAILED DESCRIPTION

[0031] The technical scheme in the embodiment of the present invention is described clearly and completely below in conjunction with the accompanying drawings in the embodiment of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0032] like Figure 1 As shown, this embodiment provides a non-metallic flexible sealing belt, which is composed of a heat-insulating layer 40, a wear-resistant layer 30, a silicone layer 20 and a protective layer 10, wherein the heat-insulating layer 40 is made of ceramic fiber, which is arranged on the heated side by utilizing its high-temperature resistance to protect the sealing belt; the wear-resistant layer 30 is the main structure of the sealing belt, and its material is made of wear-resistant and high-temperature resistant aramid material to improve the overall wear resistance of the sealing belt; the material of the protective layer 10 is also made of aramid material to improve the thickness and strength of the sealing belt, which plays a role in increasing the service life of the sealing belt; the material of the silicone layer 20 is high-temperature resistant silicone rubber, and its function is to solidify and mold the multi-layer materials into one. The silicone layer 20 is coated on the outer periphery of the wear-resistant layer 30 by adhesive, and grooves are respectively provided on the corresponding two sides of the silicone layer 20, the heat-insulating layer 40 is bonded in one of the grooves by adhesive, and the protective layer 10 is bonded in the other groove by adhesive, wherein the thickness of the heat-insulating layer 40 and the thickness of the protective layer 10 are equal to the height of the groove.

[0033] Preferably, the thickness of the adhesive is 13μm-15μm, and the adhesive is resistant to high temperatures of 400 to 500 degrees. Since the non-metallic flexible sealing tape must withstand rolling and a certain temperature during use, if the thickness of the adhesive layer is too high or too thin, it will easily cause the non-metallic flexible sealing tape to crack, affecting the service life of the non-metallic flexible sealing tape. After after-sales tracking and feedback from users, it was found that the situation is summarized as follows: when the thickness of the adhesive is 10μm-13μm, the non-metallic sealing tape will crack after about 10 months of use, and when the thickness of the adhesive is 15μm-20μm, the non-metallic sealing tape will crack within about 8-10 months of use. The above data is data under normal production conditions. If the use schedule is tight and the use is frequent, the cracking time may be shorter. When the thickness of the adhesive is 13μm-15μm, the service life of the non-metallic flexible sealing tape is about 12 months, and the longest use time is up to 14 months before the non-metallic flexible sealing tape is replaced.

[0034] In addition, the above data not only determines the thickness of the adhesive, but also needs to determine the wear. If the thickness of the adhesive is too thick, it will cause the non-metallic flexible sealing belt to be easily worn as a whole. Therefore, the thickness of the adhesive should not be too thick.

[0035] In addition, when the non-metallic flexible sealing tape is used on the slideway seal, since its thickness is certain, the thickness ratio between the protective layer 10, the silicone layer 20, the wear-resistant layer 30, and the heat-insulating layer 40 is: protective layer 10: first silicone layer (i.e., the thickness of the silicone layer between the protective layer 10 and the wear-resistant layer 30): wear-resistant layer 30: second silicone layer (i.e., the thickness of the silicone layer between the wear-resistant layer 30 and the heat-insulating layer 40): heat-insulating layer 40 is equal to 1:1.5:2:1.2:1. The above ratio is a commonly used ratio, but the above ratio can be appropriately adjusted according to actual applications. In addition, the heat-insulating layer can also be removed according to the working conditions, and only the remaining three layers are used, and the wear resistance and sealing performance can reach a service life of more than 12 months.

[0036] In this embodiment, if Figures 1 to 5As shown, in order to improve the sealing performance of the non-metallic flexible sealing tape, a first sealing protrusion 100 is fixedly provided at two corners of one side of the silicone layer 20 (i.e., the side bonded with the heat insulating layer 40), and a second sealing protrusion 200 is fixedly provided at the other two corners of the other side of the silicone layer 20 (i.e., the side bonded with the protective layer 10). When installed and used, the side bonded with the protective layer 10 is fixedly attached to the lower slide of the sintering machine slide, wherein the lower slide is fixedly installed on the lower slide column, and the column is fixedly installed on the ground, and the side with the heat insulating layer 40 is slidably connected with the upper slide of the sintering machine, and the layer with the heat insulating layer 40 faces the side where the fan is installed, so that the heat insulating layer 40 protects the main part of the non-metallic flexible sealing tape.

[0037] Specifically, Figures 2 to 3 As shown, the first sealing protrusion 100 includes a first inclined surface 110, a second inclined surface 120, a third straight surface 130 and a fourth inclined surface 140 which are interconnected. Among them, the angle a between the first inclined surface 110 and one side 21 of the silicone layer (i.e., the plane where the heat insulating layer 40 is located) is an obtuse angle. Preferably, the angle a is between 150 degrees and 120 degrees. If the angle a is too large or too small, the first inclined surface 110 will be too long or too short, which may cause a poor seal. At the same time, if the angle is too small, the inclination angle of the first sealing protrusion 100 may be too small, so that the first sealing protrusion cannot be attached to the side of the upper slide. In addition, it should be noted that the angle a has a certain angle, and the angle a cannot be designed as a rounded angle, and the angle a cannot be equal to the chamfer design between the first inclined surface 110 and one side 21 of the silicone layer.

[0038] In this embodiment, the angle b between the first bevel 110 and the second bevel 120 is an obtuse angle. Preferably, the angle range of the angle b is between 140 degrees and 150 degrees. This is because, when the non-metallic flexible sealing belt is in use, that is, when the upper slide slides on the non-metallic flexible sealing belt, when the upper slide presses the first bevel 110 downward (usually, the edge of the upper slide slides in the middle and upper part of the first bevel 110), the second bevel 120 and a part of the first bevel 110 are in the same plane state. If the angle range of the angle b is too small, then when the upper slide and the lower slide deviate, the edge of the upper slide is likely to crush on the first sealing protrusion 100. If the angle range of the angle b is too large, the second bevel 120 cannot be attached to the side of the upper slide and cannot play a sealing role.

[0039] In this embodiment, the fourth inclined surface 140 is parallel to the second inclined surface 120, so that the first sealing protrusion 100 is inclined relative to the silicone layer 20. In addition, when the upper slideway deviates on the non-metallic flexible sealing belt, the first sealing protrusion 100 can also play a certain sealing role. Specifically, since the first inclined surface 110 and the silicone layer surface 21 are arranged at a certain angle, and the first inclined surface 110 is of a certain length, a small deviation does not affect the sealing effect of the non-metallic flexible sealing belt. If the deviation is more serious, the first sealing protrusion 100 as a whole will prevent wind from entering the upper slideway. In this embodiment, the mechanical principle is used, that is, the structure of the sealing belt is changed during the sliding process of the upper slideway, so that the first sealing protrusion and the second sealing protrusion of the sealing belt move toward the side of the upper slideway and the lower slideway, thereby realizing the sealing effect of the sealing belt.

[0040] In this embodiment, if Figures 4 to 5 As shown, the second sealing protrusion 200 includes a fifth straight surface 210, a sixth inclined surface 220, a seventh straight surface 230 and an eighth inclined surface 240 connected to each other. The angle between the fifth straight surface 210 and the other surface 22 of the silicone layer is a right angle, and the angle can also be set to a rounded angle matching the lower slide. The angle c between the sixth inclined surface 220 and the fifth straight surface 210 is an acute angle, and the angle c is preferably set to 20 degrees to 40 degrees. When the sealing tape is installed on the lower slide, the sixth inclined surface 220 and the fifth straight surface 210 are in the same plane, and the fifth straight surface The sixth inclined surface 220 and the eighth inclined surface 240 can be tightly attached to the side of the lower slideway, especially, when the upper slideway slides, the upper slideway presses the sealing belt, so that the sealing belt is compressed and deformed downward, and at the same time, the second sealing protrusion 200 is bent toward the side of the lower slideway due to the pressure of the upper slideway, so that the sixth inclined surface 220 is more closely attached to the side of the lower slideway, even if the sealing belt is compressed and deformed to become wider, the sixth inclined surface 220 will also be attached to the side of the lower slideway, thereby improving the sealing performance of the sealing belt. The eighth inclined surface 240 and the sixth inclined surface 220 are arranged parallel to each other.

[0041] In this embodiment, the first sealing protrusion 100 and the second sealing protrusion 200 are inclined in opposite directions. This is because during use, the plane where the second sealing protrusion 200 is located is in contact with the lower slide 2. In this embodiment, the lower slide 2 is a bar track and is fixed. The first sealing protrusion 100 is in contact with the upper slide 1, and the upper slide 1 slides on the non-metallic flexible sealing belt. During the sliding process, the upper slide 1 presses the non-metallic flexible sealing belt, so that the second sealing protrusion 200 bends toward the side of the lower slide 2, thereby completing the sealing. During the sliding process of the upper slide 1, since the upper slide 1 presses the non-metallic flexible sealing belt, the two ends of the non-metallic flexible sealing belt (i.e., the two ends where the first sealing protrusion 100 is located) are completed toward the two sides of the upper slide 1, thereby completing the sealing of the side where the upper slide 1 is located. This is because the forces to be applied to the first sealing protrusion 100 and the second sealing protrusion 200 are different, and therefore, the first sealing protrusion 100 and the second sealing protrusion 200 are designed to have opposite inclination directions.

[0042] In this embodiment, strip grooves 25 are obliquely arranged on both sides of the silicone layer 20 bonded with the heat insulation layer 40 and the protective layer 10, and the strip grooves 25 are close to the side edges of the silicone layer 20. Preferably, the strip grooves 25 are arranged in a form of a small opening and a large interior, so that even if the upper slideway and the lower slideway deviate, the first sealing protrusion 100 and the second sealing protrusion 200 can move toward the side of the upper slideway and the side of the lower slideway.

[0043] In this embodiment, the mechanical principle is utilized, that is, the structure of the sealing belt is changed during the sliding process of the upper slide, so that the first sealing protrusion and the second sealing protrusion of the sealing belt move toward the sides of the upper slide and the lower slide, thereby realizing the sealing effect of the sealing belt.

[0044] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A non-metallic flexible sealing tape, characterized in that: It is composed of a heat-insulating layer, a wear-resistant layer, a silicone layer and a protective layer. The silicone layer is coated on the outer periphery of the wear-resistant layer by bonding with an adhesive. Two corresponding sides of the silicone layer are respectively provided with grooves. The heat-insulating layer is bonded in one of the grooves by an adhesive. The protective layer is bonded in the other groove by an adhesive. The heat-insulating layer, the protective layer and the grooves are at the same height. The heat insulation layer is a ceramic fiber layer, the wear-resistant layer is an aramid layer, and the protective layer is an aramid layer; A first sealing protrusion is fixedly provided at two corners on one side of the silicone layer, and a second sealing protrusion is fixedly provided at the other two corners on the other side of the silicone layer; The first sealing protrusion comprises a first inclined surface, a second inclined surface, a third straight surface and a fourth inclined surface connected to each other, the angle between the first inclined surface and one surface of the silicone layer is an obtuse angle, the angle between the first inclined surface and the second inclined surface is an obtuse angle, and the fourth inclined surface is parallel to the second inclined surface; The two sides of the silicone layer bonded with the heat insulation layer and the protective layer are respectively provided with strip grooves which are inclined, and the strip grooves are close to the side edges of the silicone layer.

2. The non-metallic flexible sealing tape according to claim 1, characterized in that: The thickness of the adhesive is 13 μm-15 μm, and the adhesive is resistant to high temperatures of 400 to 500 degrees.

3. The non-metallic flexible sealing tape according to claim 1, characterized in that: When the non-metallic flexible sealing tape is in use, when the first inclined surface is pressed downward, the second inclined surface and a portion of the first inclined surface are in the same plane.

4. The non-metallic flexible sealing tape according to claim 3, characterized in that: The second sealing protrusion includes a fifth straight surface, a sixth inclined surface, a seventh straight surface and an eighth inclined surface which are connected to each other. The angle between the fifth straight surface and the other surface of the silicone layer is a right angle, the angle between the sixth inclined surface and the fifth straight surface is an acute angle, and the eighth inclined surface is parallel to the sixth inclined surface.

5. The non-metallic flexible sealing tape according to claim 4, characterized in that: When the non-metallic flexible sealing strip is in use, the sixth inclined surface and the fifth straight surface are in the same plane.

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