Medium and high temperature resistant oil absorption gasket

Abstract

The utility model discloses a medium and high temperature resistant oil absorption washer, which relates to the technical field of oil absorption washers, and comprises an oil absorption cotton layer or a needled felt layer positioned in the middle layer, the oil absorption cotton layer is a spray melting polypropylene layer, the needled felt layer is a pre-oxidized fiber layer, non-woven fabric layers are arranged on two sides of the oil absorption cotton layer or the needled felt layer, and the non-woven fabric layers are arranged on two sides of the oil absorption cotton layer or the needled felt layer. The non-woven fabric layer is a polypropylene layer, and the oil absorption cotton layer or the needled felt layer is compounded with the non-woven fabric layer. The utility model provides a medium and high temperature resistant oil absorption gasket which solves the technical problems that a wool gasket and a polyurethane felt oil absorption gasket are poor in dustproof, waterproof, oil-resistant and high-temperature-resistant performance, and high-temperature-resistant felt is high in price, and the oil absorption gasket which gives consideration to cost, dustproof and waterproof performance and oil resistance is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of oil absorption gaskets, in particular to a medium and high temperature resistant oil absorption gasket. Background Art

[0002] Oil-absorbing gaskets are usually made of wool felt, sponge or other materials with oil-absorbing properties, and are mainly used to absorb and adsorb liquid substances such as oil and water. This type of gasket is often used in industrial fields, such as mechanical seals, oil tank seals, pump and compressor seals, etc., to prevent oil leakage and keep the equipment clean. Ordinary oil-absorbing gaskets include wool felt rings, polyurethane felt, etc., and high-temperature resistant felts (working temperature below 500 degrees) include PBO / KEVLAR (Kevlar), etc. The use of wool gaskets and polyurethane felt is suitable for working environments of -30 to 100°C. When the temperature exceeds this, the oil resistance of the gasket is poor, and wool felt is more absorbent. In complex environments, wool gaskets and polyurethane felts have poor dust and water resistance, and may corrode metal parts around the gaskets. High-temperature resistant felts such as PBO / KEVLAR (Kevlar) are expensive, which increases production costs and limits the conditions of use. Utility Model Content

[0003] Technical problems to be solved by utility models

[0004] In view of the technical problem that the existing oil-absorbing gaskets cannot take into account the cost and dust-proof and waterproof performance, oil resistance and high temperature resistance, the utility model provides a medium and high temperature resistant oil-absorbing gasket, which solves the technical problems that wool gaskets and polyurethane felt oil-absorbing gaskets have poor dust-proof and waterproof performance and oil and high temperature resistance, and the high price of high temperature resistant felt, and proposes an oil-absorbing gasket that takes into account the cost and dust-proof and waterproof performance, and oil resistance.

[0005] Technical Solution

[0006] In order to solve the above problems, the technical solution provided by the utility model is:

[0007] A medium and high temperature resistant oil-absorbing gasket, comprising an oil-absorbing cotton layer or a needle-punched felt layer located in the middle layer, the oil-absorbing cotton layer is a melt-blown polypropylene layer, the needle-punched felt layer is a pre-oxidized silk fiber layer, non-woven fabric layers are provided on both sides of the oil-absorbing cotton layer or the needle-punched felt layer, the non-woven fabric layers are polypropylene layers, and the oil-absorbing cotton layer or the needle-punched felt layer is composited with the non-woven fabric layer.

[0008] Furthermore, the oil-absorbing cotton layer is low-priced and resistant to medium and high temperatures. The polypropylene melt-sprayed oil-absorbing cotton can maintain its physical properties at a temperature of 140°C after being made into a gasket; the pre-oxidized silk fiber can be used normally below 300°C. In addition, these raw materials are widely available in the market, easy to purchase, and have a simple manufacturing process. The materials are single and environmentally friendly. Heat-insulating, water-repellent, pre-oxidized silk fibers can be flame-retardant and have good heat resistance.

[0009] The oil-absorbing cotton layer or the needle-punched felt layer is composited with the non-woven fabric layer by ultrasonic or laser dot melting.

[0010] Furthermore, the advantages of ultrasonic dot melting composite fabrics are simple equipment, convenient operation, and high production efficiency. The advantages of laser dot melting composite fabrics are fast processing speed, high precision, and no pollution to the environment.

[0011] The ultrasonic or laser dots are arranged evenly.

[0012] Furthermore, evenly arranged dots are beneficial to improving the uniformity of the composite fabric, evenly distributing the force, and improving the composite strength.

[0013] The ultrasonic or laser dotting interval is 50%-120% of the width of the oil absorbing gasket.

[0014] Furthermore, the ultrasonic or laser dot spacing is 50%, 100% or 120% of the width of the oil absorbing gasket.

[0015] The oil-absorbing cotton layer or the needle-punched felt layer is compounded with the non-woven fabric layer via an adhesive layer.

[0016] The adhesive layer is a hot-melt polypropylene layer.

[0017] The oil absorption gasket is circular.

[0018] Furthermore, the oil absorption gasket can be circular and fit inside the hole-shaped structure.

[0019] The oil absorption gasket is square.

[0020] Furthermore, the oil absorption gasket may be square and fit inside the square structure.

[0021] Beneficial Effects

[0022] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0023] The technical solution provided by the utility model has a low price for the oil-absorbing cotton layer and is resistant to medium and high temperatures. The polypropylene melt-sprayed oil-absorbing cotton can maintain the same physical properties at a temperature of 140°C after being made into a gasket; the pre-oxidized silk fiber can be used normally below 300°C. In addition, these raw materials are widely available in the market, easy to purchase, and have a simple manufacturing process. The material is single and environmentally friendly. The heat-insulating, water-repellent, pre-oxidized silk fiber can be flame-retardant and has good heat resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of a medium- and high-temperature resistant oil-absorbing gasket proposed in an embodiment of the utility model Figure 1 .

[0025] Figure 2 A schematic diagram of a medium- and high-temperature resistant oil-absorbing gasket proposed in an embodiment of the utility model Figure 2 .

[0026] 1. Oil-absorbing cotton layer; 2. Adhesive layer; 3. Non-woven fabric layer; 4. Dotting points; 5. Needle-punched felt layer. DETAILED DESCRIPTION

[0027] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.

[0028] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It should also be noted that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings. The words "first", "second", etc. described in the present utility model are set for the convenience of describing the technical solution of the present utility model, and have no specific limiting effect. They are all general references and do not constitute a limiting effect on the technical solution of the present utility model. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments in the present application can be combined with each other. In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Multiple technical solutions in the same embodiment, and multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not have contradictions or conflicts, all of which are within the scope of protection required by the present utility model.

[0029] Example 1

[0030] Combined with Figure 1-2A medium and high temperature resistant oil-absorbing gasket, comprising an oil-absorbing cotton layer 1 or a needle-punched felt layer 5 located in the middle layer, the oil-absorbing cotton layer 1 is a melt-blown polypropylene layer, the needle-punched felt layer 5 is a pre-oxidized silk fiber layer, non-woven fabric layers 3 are provided on both sides of the oil-absorbing cotton layer 1 or the needle-punched felt layer 5, the non-woven fabric layer 3 is a polypropylene layer, and the oil-absorbing cotton layer 1 or the needle-punched felt layer 5 is composited with the non-woven fabric layer 3.

[0031] Furthermore, the oil-absorbing cotton layer 1 is low-priced and resistant to medium and high temperatures. The polypropylene melt-sprayed oil-absorbing cotton can maintain its physical properties at a temperature of 140°C after being made into a gasket; the pre-oxidized silk fiber can be used normally below 300°C. In addition, these raw materials are widely available in the market, easy to purchase, and have a simple manufacturing process. The material is single and environmentally friendly. The heat-insulating, water-repellent, pre-oxidized silk fiber can be flame-retardant and has good heat resistance.

[0032] The medium and high temperature resistant oil absorption gasket is an important oil leakage treatment tool in the industrial field. It adopts advanced design and manufacturing technology, and can stably absorb and adsorb oil in medium and high temperature environments, providing reliable protection for industrial production and equipment maintenance.

[0033] The core part of this oil-absorbing gasket is the oil-absorbing cotton layer 1 or the needle-punched felt layer 5, which are located in the middle of the gasket. The oil-absorbing cotton layer 1 is made of melt-sprayed polypropylene material, which has good oil absorption performance and medium and high temperature resistance. The melt-sprayed polypropylene technology melts the polypropylene particles together to form a tight oil-absorbing layer that can effectively absorb various oils. The needle-punched felt layer 5 is made of pre-oxidized silk fiber material, which has excellent high temperature resistance and can maintain stable performance at higher temperatures. After the pre-oxidized silk fiber is specially treated, the gaps between its fibers can accommodate more oil products, further improving the oil absorption capacity of the oil-absorbing gasket.

[0034] On both sides of the oil-absorbing cotton layer 1 or the needle-punched felt layer 5, a non-woven fabric layer 3 is provided. The non-woven fabric layer 3 is made of polypropylene material, which plays the role of tightly bonding the oil-absorbing cotton layer 1 or the needle-punched felt layer 5 together. In order to achieve this goal, ultrasonic or laser dot melting composite methods can be used. Ultrasonic dot melting composite uses high-frequency vibration to generate heat to melt and bond the non-woven fabric layer 3 with the oil-absorbing cotton layer 1 or the needle-punched felt layer 5. Laser dot melting composite uses high-energy density laser to generate high temperature on the surface of the material to melt and bond the non-woven fabric layer 3 with the oil-absorbing cotton layer 1 or the needle-punched felt layer 5. Both methods can achieve fast, efficient and uniform composite, and improve the overall performance of the oil-absorbing gasket.

[0035] In addition to the advantages in manufacturing process, this medium and high temperature resistant oil absorption gasket also has a wide range of application prospects. It can be widely used in various occasions where oil leakage needs to be handled, such as mechanical seals, oil tank seals, pump and compressor seals, etc. Whether at room temperature or medium and high temperature environment, it can effectively absorb and adsorb oil to prevent oil leakage and environmental pollution. At the same time, due to its excellent medium and high temperature resistance, this oil absorption gasket can also maintain stable performance in a higher temperature environment, providing reliable protection for industrial production and equipment maintenance.

[0036] In general, the design and manufacturing process of this medium and high temperature resistant oil absorption gasket are quite advanced. It uses high-quality materials and advanced process technology to ensure that it can stably absorb and adsorb oil products in various medium and high temperature environments. The application of this oil absorption gasket not only improves the efficiency and safety of industrial production, but also makes a positive contribution to environmental protection. With the continuous improvement of the requirements for environmental protection and safe production in the industrial field, this medium and high temperature resistant oil absorption gasket will be more widely used and promoted.

[0037] Oil-absorbing gaskets play an important role in the industrial field, mainly used to absorb and adsorb liquid substances such as oil, water, etc. In order to meet various application requirements, the design and manufacturing process of oil-absorbing gaskets are also constantly developing and improving.

[0038] At present, the oil-absorbing gaskets on the market generally use polypropylene melt-blown oil-absorbing cotton as the inner layer. This oil-absorbing cotton is a tight oil-absorbing layer formed by melting polypropylene particles together, which has good oil absorption performance and medium and high temperature resistance. The outer layer uses wear-resistant, lipophilic and water-repellent polypropylene non-woven fabric. This non-woven fabric material can effectively prevent oil leakage and environmental pollution. Through ultrasonic or laser dot melting and compounding, the three layers of materials are fixed together to form a stable oil-absorbing gasket.

[0039] In addition to polypropylene melt-blown oil-absorbing cotton, pre-oxidized silk fiber is also a commonly used oil-absorbing gasket material. After special treatment, this fiber has excellent high temperature resistance and can maintain stable performance at higher temperatures. Needle-punched felt fabric can be made through needle-punching technology, and then wear-resistant, oleophilic and water-repellent polypropylene non-woven fabric is glued on both sides of the felt through fabric composite technology. After the finished product is made, it needs to be cut into different shapes for gasket installation and use. Non-woven fabrics are used on both sides of the oil-absorbing cotton layer 1 in order to fix the oil-absorbing layer fibers inside, that is, the melt-blown polypropylene or pre-oxidized silk fibers will not be free.

[0040] Compared with traditional oil-absorbing gaskets, this new type of oil-absorbing gasket has obvious advantages. First, its price is relatively low. The raw materials such as polypropylene are widely available in the market, easy to purchase, and the manufacturing process is simple. Secondly, it has excellent resistance to medium and high temperatures. After the polypropylene melt-blown oil-absorbing cotton is made into a gasket, its physical properties can remain unchanged at a temperature of 140°C, while the pre-oxidized silk fiber can ensure normal use below 300°C. In addition, this oil-absorbing gasket also has the characteristics of environmental protection, heat insulation, and water repellency. The pre-oxidized silk fiber can be used to make flame retardant materials.

[0041] In practical applications, the oil-absorbing gasket made into a ring can be pressed between the oil seal and the end cover. This design can effectively prevent water and dust from entering the oil seal area, while absorbing some false oil leakage when the shock absorber is working, and prevent unnecessary losses caused by misjudgment. The application of this oil-absorbing gasket not only improves the efficiency and safety of industrial production, but also makes a positive contribution to environmental protection.

[0042] In general, this new type of oil-absorbing gasket adopts advanced design and manufacturing technology, has excellent performance and broad application prospects. As the industrial field's requirements for environmental protection and safe production continue to increase, this type of oil-absorbing gasket will be more widely used and promoted.

[0043] Example 2

[0044] Combined with Figure 1-2 Compared with the technical solution of Example 1, the medium and high temperature resistant oil absorption gasket of this embodiment can be improved as follows:

[0045] The shape of the gasket can be cut into different shapes, such as square, etc. after the fabrics are compounded.

[0046] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A medium and high temperature resistant oil absorption gasket, characterized in that: It comprises a needle punched felt layer in the middle layer, the needle punched felt layer is a pre-oxidized silk fiber layer, non-woven fabric layers are arranged on both sides of the needle punched felt layer, the non-woven fabric layers are polypropylene layers, and the needle punched felt layer and the non-woven fabric layer are composited.

2. The medium and high temperature resistant oil absorption gasket according to claim 1, characterized in that: The needle-punched felt layer and the non-woven fabric layer are composited by melting through ultrasonic or laser dot punching.

3. The medium and high temperature resistant oil absorption gasket according to claim 2, characterized in that: The ultrasonic or laser dots are arranged evenly.

4. The medium and high temperature resistant oil absorption gasket according to claim 3, characterized in that: The ultrasonic or laser dot spacing is 50%-120% of the width of the oil-absorbing gasket.

5. The medium-high temperature resistant oil absorption gasket according to claim 1, characterized in that: The needle-punched felt layer and the non-woven fabric layer are compounded via an adhesive layer.

6. The medium-high temperature resistant oil absorption gasket according to claim 5, characterized in that: The adhesive layer is a hot-melt polypropylene layer.

7. A medium to high temperature resistant oil absorption gasket according to any one of claims 1 to 6, characterized in that: The oil absorption gasket is circular.

8. A medium to high temperature resistant oil absorption gasket according to any one of claims 1 to 6, characterized in that: The oil absorption gasket is square.

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