CN108591477B - A Method for Avoiding Sealing Lip Abrasion During Sealing Ring Installation - Google Patents
A Method for Avoiding Sealing Lip Abrasion During Sealing Ring Installation Download PDFInfo
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- CN108591477B CN108591477B CN201810403262.0A CN201810403262A CN108591477B CN 108591477 B CN108591477 B CN 108591477B CN 201810403262 A CN201810403262 A CN 201810403262A CN 108591477 B CN108591477 B CN 108591477B
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- sealing ring
- sealing
- filling cavity
- base body
- installation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Architecture (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
一种可膨胀密封圈，包括密封圈基体以及设置在密封圈基体内的填充腔，密封圈基体为一体结构，密封圈在生产加工过程中，填充腔内注入适量材料A，材料A未充满填充腔，保证填充腔具有一定压缩性，安装密封件时，由于密封件可压缩性大，易于安装，且安装完毕后密封唇与活塞杆为间隙配合，密封唇在安装期间内未受磨损，密封圈安装完毕后，填充腔内注入适量材料B，材料B与材料A反应形成材料C充满填充腔2，材料C为固体，体积膨胀至充满填充腔，且具有一定弹性和强度，使密封圈膨胀、体积增大，密封唇与活塞杆形成过盈配合，本发明提升密封件的寿命，减低安装过程中对密封唇产生的危害。
An expandable sealing ring, including a sealing ring base body and a filling cavity arranged in the sealing ring base body, the sealing ring base body is an integral structure, during the production and processing of the sealing ring, an appropriate amount of material A is injected into the filling cavity, and the material A is not filled. Cavity to ensure that the filling cavity has a certain compressibility. When installing the seal, the seal is easy to install due to its high compressibility, and after the installation is completed, the sealing lip and the piston rod are in a clearance fit. After the ring is installed, inject an appropriate amount of material B into the filling cavity, material B reacts with material A to form material C to fill the filling cavity 2, material C is solid, expands in volume to fill the filling cavity, and has certain elasticity and strength, so that the sealing ring expands 1. The volume increases, and the sealing lip and the piston rod form an interference fit. The invention improves the life of the sealing member and reduces the damage to the sealing lip during installation.
Description
技术领域technical field
本发明涉及一种橡塑密封圈技术领域，特别涉及一种可膨胀密封圈。The invention relates to the technical field of rubber and plastic sealing rings, in particular to an expandable sealing ring.
背景技术Background technique
橡塑密封件的结构和性能对机械设备的运转、性能和使用寿命至关重要。密封性能差不仅会增加机器的摩擦、磨损以及功率消耗，从而缩短机器的工作寿命，还会引起因泄漏而造成环境污染和设备腐蚀。密封件的失效会直接影响整机的效率，并关联引起潜在的更大经济损失，甚至会带来严重的安全事故。The structure and performance of rubber and plastic seals are crucial to the operation, performance and service life of mechanical equipment. Poor sealing performance will not only increase the friction, wear and power consumption of the machine, thereby shortening the working life of the machine, but also cause environmental pollution and equipment corrosion due to leakage. The failure of the seal will directly affect the efficiency of the whole machine, and cause potential greater economic losses and even serious safety accidents.
橡塑往复动密封在安装时一般采用过盈配合，因此密封接触区存在一定的接触压力。在安装密封圈时，由于密封圈体积大于密封槽空间，安装时不可避免其密封唇与活塞杆间的摩擦与磨损，导致密封接触区的接触压力降低，从而增加泄漏量，缩短密封件的使用寿命。而现有的密封圈从结构上决定了其在安装时密封唇的磨损问题不可避免。Rubber-plastic reciprocating dynamic seals generally adopt interference fit during installation, so there is a certain contact pressure in the seal contact area. When installing the sealing ring, since the volume of the sealing ring is larger than the space of the sealing groove, the friction and wear between the sealing lip and the piston rod are unavoidable during installation, resulting in a decrease in the contact pressure of the sealing contact area, thereby increasing the leakage and shortening the use of the seal life. However, the structure of the existing sealing ring determines that the wear problem of the sealing lip is inevitable when it is installed.
目前，国内外对于往复密封性能的研究主要集中在密封泄漏量和摩擦力，以及研究如何减小摩擦系数和使用新型材料来降低磨损提高寿命，专门研究密封唇在安装时减小或消除其磨损的发明专利极少。因此，迫切需要设计一种在安装时可避免密封唇磨损的密封圈，并能在正常工况下发挥其密封作用。At present, the research on the performance of reciprocating seals at home and abroad mainly focuses on the amount of leakage and friction of the seal, and how to reduce the friction coefficient and use new materials to reduce wear and improve life, and specifically to reduce or eliminate the wear of the sealing lip during installation. There are very few invention patents. Therefore, it is urgent to design a sealing ring that can avoid the wear of the sealing lip during installation, and can play its sealing role under normal working conditions.
发明内容Contents of the invention
为了克服上述现有技术的不足，本发明的目的在于提供一种可膨胀密封圈，能够有效提高密封件的可靠性，提升密封件的寿命，减低安装过程中对密封唇产生的危害。In order to overcome the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide an expandable sealing ring, which can effectively improve the reliability of the seal, increase the life of the seal, and reduce the damage to the sealing lip during installation.
为了实现上述目的，本发明采用的技术方案是：In order to achieve the above object, the technical scheme adopted in the present invention is:
一种可避免密封圈安装时密封唇磨损的方法，采用可膨胀密封圈，所述可膨胀密封圈包括密封圈基体1以及设置在密封圈基体1内的填充腔2，所述密封圈基体1为一体结构，填充腔2也呈环形，与密封圈基体1共圆心，其特征在于，所述填充腔2在生产加工过程中注入材料A，材料A未充满填充腔2，所述的密封圈基体1下端为密封唇，安装时，密封唇与活塞杆3为间隙配合，安装完毕后，在填充腔2内注入材料B，材料B与材料A反应形成材料C充满整个填充腔2，使密封圈膨胀、体积增大，密封唇与活塞杆3形成过盈配合。A method for avoiding sealing lip abrasion during sealing ring installation, using an expandable sealing ring, the expandable sealing ring includes a sealing ring base body 1 and a filling cavity 2 arranged in the sealing ring base body 1, the sealing ring base body 1 As an integral structure, the filling cavity 2 is also annular and has the same center as the sealing ring base 1. It is characterized in that the filling cavity 2 is injected with material A during the production process, and the material A is not filled with the filling cavity 2. The sealing ring The lower end of the substrate 1 is a sealing lip. During installation, the sealing lip and the piston rod 3 are in clearance fit. After installation, inject material B into the filling cavity 2, and material B and material A react to form material C to fill the entire filling cavity 2, so that the sealing The ring expands and the volume increases, and the sealing lip and the piston rod 3 form an interference fit.
所述的填充腔2内壁涂有一层聚乙烯塑料薄膜。The inner wall of the filling chamber 2 is coated with a layer of polyethylene plastic film.
所述的密封圈基体1为丁腈橡胶。The sealing ring base 1 is nitrile rubber.
所述材料A为高吸水性树脂(SAP)，材料B为水(H2O)，材料C为固体。The material A is a super absorbent resin (SAP), the material B is water (H 2 O), and the material C is solid.
所述材料B的注入方式为针管注射。The injection method of the material B is needle injection.
本发明的有益效果：Beneficial effects of the present invention:
正常安装时，密封圈与活塞杆3为间隙配合，密封唇不与活塞杆发生磨损接触问题；安装完毕后，在填充腔2内注入材料B，与材料A反应形成材料C，由于材料C体积膨胀，使得密封唇与活塞杆3形成过盈配合，保证其工作时的密封性和可靠性；根据不同工况选择材料A和材料B，形成所需材料性能的材料C，适用范围广。During normal installation, the sealing ring and the piston rod 3 are in clearance fit, and the sealing lip does not wear and contact with the piston rod; after installation, inject material B into the filling cavity 2, and react with material A to form material C, due to the volume of material C The expansion makes the sealing lip and the piston rod 3 form an interference fit to ensure its sealing and reliability during operation; material A and material B are selected according to different working conditions to form material C with the required material properties, which has a wide range of applications.
附图说明Description of drawings
图1为本发明结构示意图。Fig. 1 is a schematic diagram of the structure of the present invention.
图2a为本发明密封圈填充腔内注入材料B前示意图，图2b为本发明密封圈填充腔内注入材料B后示意图。Fig. 2a is a schematic diagram before injecting material B into the sealing ring filling cavity of the present invention, and Fig. 2b is a schematic diagram after injecting material B into the sealing ring filling cavity of the present invention.
具体实施方式Detailed ways
下面结合附图对本发明作进一步详细说明。The present invention will be described in further detail below in conjunction with the accompanying drawings.
如图1所示，包括密封圈基体1及设置在密封圈基体1内的填充腔2；所述密封圈基体1为一体结构。As shown in FIG. 1 , it includes a sealing ring base body 1 and a filling chamber 2 disposed in the sealing ring base body 1 ; the sealing ring base body 1 is an integral structure.
所述填充腔2在生产加工过程中注入适量材料A，保持一定形状和压力；安装密封圈时，密封唇与活塞杆3为间隙配合。The filling cavity 2 is injected with an appropriate amount of material A during production and processing to maintain a certain shape and pressure; when the sealing ring is installed, the sealing lip and the piston rod 3 are in clearance fit.
所述填充腔2在密封圈安装完毕后注入适量材料B，与材料A反应形成具有一定弹性的固体材料C，材料C充满整个填充腔且体积膨胀，使密封唇与活塞杆过盈配合，起到密封圈的密封作用。The filling chamber 2 is injected with an appropriate amount of material B after the sealing ring is installed, and reacts with material A to form a solid material C with certain elasticity. To the sealing effect of the sealing ring.
所述填充腔2内壁涂有一层聚乙烯塑料薄膜4。The inner wall of the filling cavity 2 is coated with a layer of polyethylene plastic film 4 .
所述密封圈基体1的材料为丁腈橡胶。The material of the sealing ring base 1 is nitrile rubber.
所述材料C为固体，可膨胀，并具有一定的弹性和强度。The material C is solid, expandable, and has certain elasticity and strength.
所述填充腔2内壁涂有一层聚乙烯塑料薄膜4。The inner wall of the filling cavity 2 is coated with a layer of polyethylene plastic film 4 .
所述密封圈基体1的材料为丁腈橡胶。The material of the sealing ring base 1 is nitrile rubber.
所述材料A为高吸水性树脂(SAP)，材料B为水(H2O)。The material A is a super absorbent resin (SAP), and the material B is water (H 2 O).
所述材料B的注入方式为针管注射。The injection method of the material B is needle injection.
图2a所示为密封圈安装完毕未注入材料B示意图，此时填充腔2内注有材料A，且填充腔具有可压缩性，密封唇与活塞杆3为间隙配合，间隙尺寸为d1。Figure 2a shows a schematic diagram of the seal ring installed without injecting material B. At this time, material A is injected into the filling cavity 2, and the filling cavity is compressible. The sealing lip and the piston rod 3 are in a clearance fit, and the gap size is d1.
图2b所示为密封圈安装完毕注入材料B后示意图，此时填充腔2内形成材料C充满填充腔2，使密封圈膨胀、体积增大，密封唇与活塞杆3为过盈配合，密封圈变形量为d2。Figure 2b is a schematic diagram of the injection of material B after the sealing ring is installed. At this time, the material C formed in the filling cavity 2 is filled with the filling cavity 2, so that the sealing ring expands and the volume increases. The sealing lip and the piston rod 3 are interference fit, and the sealing The ring deformation is d2.
本发明的工作原理：Working principle of the present invention:
密封圈在生产加工过程中，填充腔2内注入适量材料A，材料A未充满填充腔2，保证填充腔2具有一定压缩性。安装密封件时，由于密封件可压缩性大，易于安装，且安装完毕后密封唇与活塞杆3为间隙配合，密封唇在安装期间内未受磨损。During the production and processing of the sealing ring, an appropriate amount of material A is injected into the filling cavity 2, and the material A does not fill the filling cavity 2 to ensure that the filling cavity 2 has a certain compressibility. When the seal is installed, because the seal has high compressibility, it is easy to install, and after the installation, the seal lip and the piston rod 3 are in clearance fit, and the seal lip is not worn during the installation.
密封圈安装完毕后，填充腔2内注入适量材料B，材料B与材料A反应形成材料C充满填充腔2。材料C为固体，体积膨胀至充满填充腔2，且具有一定弹性和强度，使密封圈膨胀、体积增大，密封唇与活塞杆3形成过盈配合。根据材料C的材料性能，可保证密封件在正常工况下达到正常密封效果。由于密封唇安装时未受磨损，能够有效提高密封件的可靠性，提升密封件的寿命，减低安装过程中对密封唇产生的危害。After the sealing ring is installed, an appropriate amount of material B is injected into the filling cavity 2, and the material B reacts with the material A to form the material C to fill the filling cavity 2. The material C is solid, expands in volume to fill the filling chamber 2, and has a certain degree of elasticity and strength, so that the sealing ring expands and the volume increases, and the sealing lip and the piston rod 3 form an interference fit. According to the material properties of material C, it can ensure that the seal can achieve normal sealing effect under normal working conditions. Since the sealing lip is not worn during installation, the reliability of the sealing element can be effectively improved, the life of the sealing element can be improved, and the damage to the sealing lip during installation can be reduced.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810403262.0A CN108591477B (en) | 2018-04-28 | 2018-04-28 | A Method for Avoiding Sealing Lip Abrasion During Sealing Ring Installation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810403262.0A CN108591477B (en) | 2018-04-28 | 2018-04-28 | A Method for Avoiding Sealing Lip Abrasion During Sealing Ring Installation |
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| Publication Number | Publication Date |
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| CN108591477A CN108591477A (en) | 2018-09-28 |
| CN108591477B true CN108591477B (en) | 2019-12-24 |
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| CN201810403262.0A Expired - Fee Related CN108591477B (en) | 2018-04-28 | 2018-04-28 | A Method for Avoiding Sealing Lip Abrasion During Sealing Ring Installation |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112696496B (en) * | 2020-12-14 | 2022-06-17 | 珠海格力电器股份有限公司 | Oil seal structure and motor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3414180A1 (en) * | 1984-04-14 | 1985-10-24 | Georg Prinzing GmbH & Co KG Betonformen- und Maschinenfabrik, 7902 Blaubeuren | Sealing device for abutting components which are at least approximately pipe-shaped, in particular for concrete mouldings |
| CN86205465U (en) * | 1986-07-29 | 1987-08-26 | 宋玉泉 | Self-adjustable seal ring |
| DE102009046975B4 (en) * | 2009-11-23 | 2021-08-19 | Robert Bosch Gmbh | Sealing ring, especially for a hydraulic piston pump |
| US8292301B1 (en) * | 2011-07-18 | 2012-10-23 | Gilstad Dennis W | Multifunction ring |
| CN104265901B (en) * | 2014-08-18 | 2016-08-24 | 常熟市董浜镇徐市盛峰液压配件厂 | Enclosure seal circle |
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