Clean gasket and its cleaning process

Abstract

The present application relates to the technical field of sealing element, in particular to clean sealing gasket and its cleaning process; the clean sealing gasket includes annular sealing body, front sealing lip, rear sealing lip, turbulence generating part and turbulence disturbing part; turbulence is formed behind the turbulence generating part, and the turbulence impacting on the turbulence disturbing part rebounds to the center hole, and the boundary layer fluid far from the center hole is brought to the center hole, the front sealing lip and the rear sealing lip are acute angle when not under pressure load, and still maintain acute angle when poisson deformation occurs under pressure load, avoid the deposition of pollutants, the streamline of fluid or gas passing through the groove to the lip can be ensured to be obtuse angle, and the streamline direction is towards the center hole, avoid the traditional elastic gasket becoming drum-shaped when under pressure installation, form angle groove pit, and the streamline direction is towards the angle groove pit, form the problem of the accumulation of pollutants not easy to clean.

Description

Technical Field

[0001] This invention relates to the field of sealing element technology, specifically to clean sealing gaskets and their cleaning process. Background Technology

[0002] Gaskets are sealing components used in machinery, equipment, and pipelines—anywhere fluid or gas is present—to provide a seal, both internally and externally. Gaskets are made from metal or non-metal sheet materials through processes such as cutting, stamping, or shearing. They are used for sealing connections between pipes and between machine parts. Based on material, they can be divided into metal gaskets and non-metal gaskets. Metal gaskets include copper gaskets, stainless steel gaskets, iron gaskets, and aluminum gaskets. Non-metal gaskets include asbestos gaskets, non-asbestos gaskets, paper gaskets, and rubber gaskets.

[0003] The relevant technologies are disclosed in the prior art: Chinese Patent CN207437762U discloses a high-purity flow-limiting sealing gasket. Specifically, the gasket is circular in shape, with a central hole consisting of a conical hole and micropores arranged vertically. Both the upper and lower surfaces of the gasket are passivated. The conical hole is tapered, wider at the top and narrower at the bottom, with the lower diameter matching the diameter of the micropores. The micropores have a diameter of 0.05–0.1 mm and a height of 0.6–0.8 mm. The gasket has a surface roughness of Ra < 0.25 μm. After passivation, it can be stored for a long time and exhibits excellent sealing performance, strong high-temperature resistance, and corrosion resistance. It can be used for sealing joints of special gas media. The central micropores can achieve extremely low gas flow rates, meeting certain special flow requirements, and is of great significance for the development of special-purpose gas circuit systems.

[0004] Chinese Patent CN108000058B discloses a method for manufacturing a high-purity flow-limiting sealing gasket. Specifically, it discloses: processing a metal sheet to form a metal disc; machining micropores in the center of the disc; annealing and softening the disc; electrolytic polishing the disc; passivating the disc; cleaning and drying the disc; and then sealing it in plastic for storage. This invention provides a high-purity flow-limiting sealing gasket that can be stored for a long time, is convenient to use, has excellent sealing performance, strong high-temperature resistance, and corrosion resistance. It can be used for sealing special gas media, achieving extremely low gas flow rates to meet specific flow requirements, and enabling more compact gas circuit systems while reducing installation and operating costs. This invention can effectively promote the development and application of high-purity flow-limiting sealing gaskets and is of great significance for the development of related special-purpose gas circuit systems. Chinese Patent Publication No. CN109794470A discloses a method for cleaning gaskets. Specifically, it discloses: placing the gasket in a first cleaning frame within a first cleaning tank, immersing and cleaning it using ultrasonic waves at a frequency of 23kHz to 27kHz while shaking the first cleaning frame up and down for 1 to 3 seconds each time; then placing the gasket in a second cleaning frame within a second cleaning tank, immersing and cleaning it using ultrasonic waves at a frequency of 23kHz to 27kHz while shaking the second cleaning frame left and right for 1 to 3 seconds each time. This method can improve the surface cleanliness and cleaning efficiency of the gasket, avoiding the risk of shifting failure due to automatic transmission oil circuit blockage caused by gasket cleanliness issues.

[0005] However, the aforementioned existing technology still has the following problems: 1. The sealing gasket has a circular structure, which will form an angle with the pressing surface of the sealed component during installation. Especially when the connected pipe components are pressurized, the side of the elastic sealing element will bulge out due to Poisson deformation. Then the side of the sealing element will form a sharp-angled concave area with the end face of the sealed component, which is easy to trap dirt and reduce cleanliness. Especially in the fields of medical and food, it will cause the accumulation and deterioration of pollutants.

[0006] 2. Existing sealing gaskets have smooth cylindrical inner sides. When fluid or gas flows through them, a boundary layer is formed, causing the fluid or gas in the middle to flow faster than the fluid or gas at the periphery. This makes it easy for contaminants to accumulate around the central hole and difficult to clean. Summary of the Invention

[0007] To address the aforementioned problems, the present invention provides a clean sealing gasket for sealing the connection of a fluid or gas pipe. The clean sealing gasket comprises: an annular sealing body, a front sealing lip, a rear sealing lip, a turbulence generating portion and a turbulence disturbance portion protruding radially towards the center of the sealing body; the front sealing lip, the turbulence generating portion, the turbulence disturbance portion, and the rear sealing lip are distributed axially along the sealing body; the turbulence generating portion has a higher protrusion height than the turbulence disturbance portion and is located upstream of the turbulence disturbance portion in the fluid or gas direction; when fluid or gas flows through the turbulence generating portion, turbulence is formed behind the turbulence generating portion; the turbulence impacting the turbulence disturbance portion rebounds towards the central hole of the clean sealing gasket, carrying boundary layer fluid or gas away from the center of the central hole towards the center of the central hole.

[0008] Furthermore, the clean sealing gasket has a turbulence generating section and a turbulence disturbance section.

[0009] Furthermore, the clean sealing gasket has one turbulence generating section and multiple turbulence disturbance sections.

[0010] Furthermore, the material of the clean sealing gasket is any one of rubber, silicone, or synthetic plastic.

[0011] Furthermore, the front sealing lip and the rear sealing lip have the same aperture.

[0012] Furthermore, the clean sealing gasket has an upper surface and a lower surface, which respectively contact the end face of the connected fluid pipe or gas pipe and are subjected to the compressive load of the end face of the fluid pipe or gas pipe; the front sealing lip and the rear sealing lip are acute angles when not subjected to compressive load, and still maintain acute angles when subjected to compressive load and undergoing Poisson deformation.

[0013] Furthermore, the present invention also provides a cleaning process for a clean sealing gasket, used for cleaning the clean sealing gasket, characterized by comprising the following steps: S1. Immerse the clean sealing gaskets of the same batch in pure water with degreasing agent and perform ultrasonic cleaning for 18-25 seconds. S2. Immerse the clean sealing gasket, which has been degreased by ultrasonication, in pure water at 60-70℃ for 15-30 minutes for pasteurization. S3. Place the pasteurized clean sealing gaskets into the cleaning tube and tighten the cleaning tube cap. The cleaning tube has an inlet hole, an outlet hole, and a gasket receiving cavity; After multiple gaskets are stacked in the cleaning tube, disinfectant is introduced into the inlet hole. The disinfectant flows through the front sealing lip, turbulence generating part, turbulence disturbance part and rear sealing lip of each of the clean sealing gaskets, and then flows out from the outlet hole. S4. Unscrew the cleaning tube cap and place the clean sealing gasket into the ultra-clean cyclone blower to dry it; S5. Pack, register, and store the clean sealing gaskets.

[0014] The beneficial effects of this invention are as follows: 1. The present invention provides a turbulence generating part and a turbulence disturbance part on the inner control of the gasket. The turbulence generating part generates turbulence, and after the turbulence impacts the turbulence disturbance part, it bounces back to the middle of the central hole, bringing the slow fluid or gas deposited on the outer periphery of the central hole to the middle of the central hole with a faster flow rate, thus avoiding the deposition of pollutants.

[0015] 2. This invention features an acute-angled lip and specifically defines the relationship between the depth of the groove behind the lip and Young's modulus and Poisson's ratio. This ensures that even if the groove protrudes due to Poisson deformation during pressure installation, it will not be higher than the lip. In this way, the flow line of fluid or gas reaching the lip through the groove is guaranteed to be obtuse, and the flow line points towards the center of the central hole. This avoids the situation where traditional elastic gaskets become drum-shaped during pressure installation, forming corner grooves and pits, and the flow line pointing towards the corner grooves and pits can lead to the accumulation of contaminants and make cleaning difficult. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external outline of the clean sealing gasket of the present invention; Figure 2 This is a schematic diagram of the inner and outer contours of the clean sealing gasket of the present invention; Figure 3 This is a schematic cross-sectional outline of the clean sealing gasket of the present invention; Figure 4 This is a schematic diagram of the cross-sectional geometry of the clean sealing gasket of the present invention; Figure 5 This is a schematic diagram of the cleaning tube in the cleaning process of the clean sealing gasket of the present invention. Detailed Implementation

[0017] To enhance understanding of the present invention, the present invention will be further described in detail below with reference to embodiments. These embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0018] Example 1

[0019] like Figure 1-4 As shown, a clean sealing gasket is used for sealing the connection of a fluid pipe or gas pipe. The clean sealing gasket includes: an annular sealing body, a front sealing lip, a rear sealing lip, a turbulence generating part and a turbulence disturbance part that protrude radially towards the center of the sealing body; the front sealing lip, the turbulence generating part, the turbulence disturbance part and the rear sealing lip are distributed axially along the sealing body; the turbulence generating part has a higher protrusion height than the turbulence disturbance part and is located upstream of the turbulence disturbance part in the fluid or gas direction; when the fluid or gas flows through the turbulence generating part, turbulence is formed behind the turbulence generating part; the turbulence impacting the turbulence disturbance part will rebound towards the central hole of the clean sealing gasket, carrying the boundary layer fluid or gas away from the center of the central hole towards the center of the central hole.

[0020] Furthermore, the clean sealing gasket has a turbulence generating section and a turbulence disturbance section.

[0021] Furthermore, the clean sealing gasket has one turbulence generating section and multiple turbulence disturbance sections.

[0022] Furthermore, the material of the clean sealing gasket is any one of rubber, silicone, or synthetic plastic.

[0023] Furthermore, the front sealing lip and the rear sealing lip have the same aperture.

[0024] Furthermore, the clean sealing gasket has an upper surface and a lower surface, which respectively contact the end face of the connected fluid pipe or gas pipe and are subjected to the compressive load of the end face of the fluid pipe or gas pipe; the front sealing lip and the rear sealing lip are acute angles when not subjected to compressive load, and still maintain acute angles when subjected to compressive load and undergoing Poisson deformation.

[0025] Example 2

[0026] like Figure 5 As shown, a cleaning process for a clean sealing gasket is provided, characterized by comprising the following steps: S1. Immerse the clean sealing gaskets of the same batch in pure water with degreasing agent and perform ultrasonic cleaning for 18-25 seconds. S2. Immerse the clean sealing gasket, which has been degreased by ultrasonication, in pure water at 60-70℃ for 15-30 minutes for pasteurization. S3. Place the pasteurized clean sealing gaskets into the cleaning tube and tighten the cleaning tube cap. The cleaning tube has an inlet hole, an outlet hole, and a gasket receiving cavity; After multiple gaskets are stacked in the cleaning tube, disinfectant is introduced into the inlet hole. The disinfectant flows through the front sealing lip, turbulence generating part, turbulence disturbance part and rear sealing lip of each of the clean sealing gaskets, and then flows out from the outlet hole. S4. Unscrew the cleaning tube cap and place the clean sealing gasket into the ultra-clean cyclone blower to dry it; S5. Pack, register, and store the clean sealing gaskets.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A clean sealing gasket, characterized in that: The clean sealing gasket is used for sealing the connection of fluid pipes or gas pipes; The clean sealing gasket includes: an annular sealing body, a front sealing lip, a rear sealing lip, a turbulence generating part and a turbulence disturbance part that protrude radially toward the center of the sealing body; The front sealing lip, the turbulence generating part, the turbulence disturbance part, and the rear sealing lip are distributed along the axial direction of the sealing body; The turbulence generating part has a higher protrusion height than the turbulence disturbance part and is located upstream of the turbulence disturbance part in the fluid or gas direction; When fluid or gas flows through the turbulence generator, turbulence is formed behind the turbulence generator; the turbulence impacts the turbulence disturbance part and bounces back toward the center hole of the clean sealing gasket, carrying the boundary layer fluid or gas away from the center of the center hole toward the center of the center hole.

2. The cleanroom sealing gasket according to claim 1, characterized in that: The clean sealing gasket has a turbulence generating part and a turbulence disturbance part.

3. A cleanroom sealing gasket according to claim 1, characterized in that: The clean sealing gasket has one turbulence generating part and multiple turbulence disturbance parts.

4. A cleanroom sealing gasket according to claim 1, characterized in that: The clean sealing gasket is made of any one of rubber, silicone, or synthetic plastic.

5. A cleanroom sealing gasket according to claim 1, characterized in that: The front sealing lip and the rear sealing lip have the same aperture.

6. A cleaning process for a clean sealing gasket, used to clean the clean sealing gasket according to any one of claims 1-5, characterized in that, Includes the following steps: S1. Immerse the clean sealing gaskets of the same batch in pure water with degreasing agent and perform ultrasonic cleaning for 18-25 seconds. S2. Immerse the clean sealing gasket, which has been degreased by ultrasonication, in pure water at 60-70℃ for 15-30 minutes for pasteurization. S3. Place the pasteurized clean sealing gaskets into the cleaning tube and tighten the cleaning tube cap. The cleaning tube has an inlet hole, an outlet hole, and a gasket receiving cavity; After multiple gaskets are stacked in the cleaning tube, disinfectant is introduced into the inlet hole. The disinfectant flows through the front sealing lip, turbulence generating part, turbulence disturbance part and rear sealing lip of each of the clean sealing gaskets, and then flows out from the outlet hole. S4. Unscrew the cleaning tube cap and place the clean sealing gasket into the ultra-clean cyclone blower to dry it; S5. Pack, register, and store the clean sealing gaskets.

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