CN104110494A - Piston sealing structure - Google Patents
Piston sealing structure Download PDFInfo
- Publication number
- CN104110494A CN104110494A CN201410292049.9A CN201410292049A CN104110494A CN 104110494 A CN104110494 A CN 104110494A CN 201410292049 A CN201410292049 A CN 201410292049A CN 104110494 A CN104110494 A CN 104110494A
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- CN
- China
- Prior art keywords
- ring seal
- sealing ring
- locating slot
- sealing structure
- annular sealing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Sealing Devices (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Actuator (AREA)
Abstract
The invention discloses a piston sealing structure which comprises a positioning block, wherein a step hole for containing a sealing ring and a piston rod is formed in the positioning block, a positioning groove is formed in the inner wall of the step hole, and the section of the positioning groove in the vertical direction is in an inversed V shape. The piston sealing structure further comprises a first annular sealing ring, a second annular sealing ring and a third annular sealing ring, wherein the first annular sealing ring is used for being arranged in the positioning groove and sleeved with the second annular sealing ring, and the third annular sealing ring is arranged between the first annular sealing ring and the second annular sealing ring. According to the piston sealing structure, the sectional shape of the first annular sealing ring corresponds to the sectional shape of the positioning groove, so that the first annular sealing ring can be installed in the positioning groove conveniently, then, the first annular sealing ring is sleeved with the second annular sealing ring, and the third annular sealing ring is clamped between the first annular sealing ring and the second annular sealing ring. The whole process can be performed manually, and the piston sealing structure is convenient and efficient.
Description
Technical field
The present invention relates to piston seal field, relate to specifically a kind of piston sealing structure in this field.
Background technique
Piston sealing structure is the key components and parts in reciprocating motion of the pistons actuator.It is not only related to leakage problem, but also will have influence on performance and the life-span of whole machinery equipment, if frequent shutdown is changed, can reduce manufacturing efficiency.The thickness of this exterior seal ring is thicker, is difficult to pack into by hand, need to knock in hammer, and such mounting type also exists potential safety hazard.
Summary of the invention
Technical problem to be solved by this invention, is just to provide the piston sealing structure that a kind of seal ring is easily installed.
In order to solve the problems of the technologies described above, the present invention adopts following technological scheme:
A kind of piston sealing structure, comprises positioning block, offers the step hole for holding seal ring and piston rod on positioning block, and the inwall of described step hole has locating slot along circumferential direction, and described locating slot is reversed V-shape in the cross section of vertical direction; Also comprise for packing the first O-ring seal in locating slot into, be set in the second O-ring seal in the first O-ring seal and be clipped in the first O-ring seal and the second O-ring seal between the 3rd O-ring seal, wherein the first O-ring seal is the reversed V-shape corresponding with locating slot cross section in the cross section of vertical direction, the second O-ring seal is inverted U-shaped in the cross section of vertical direction, and the 3rd O-ring seal is oval in the cross section of vertical direction.
Further, described positioning block is cuboid shape.
Further, the quantity of described step hole is two or more.
Further, the quantity of described locating slot is two, is located at respectively on two steps up and down of described step hole.
Further, described the first O-ring seal is packing into after locating slot, and the summit of its upper and lower both sides will be stretched out outside locating slot.
Further, described the second O-ring seal is set-located with the relative structural type of cross section opening direction mutually with the first O-ring seal.
The invention has the beneficial effects as follows:
Piston sealing structure disclosed in this invention, the sectional shape of the first O-ring seal is corresponding with the sectional shape of locating slot, can easily the first O-ring seal be packed in locating slot like this, again the second O-ring seal is set in the first O-ring seal subsequently, and sandwiches the 3rd O-ring seal between the first O-ring seal and the second O-ring seal.Whole process is all manually actuated, convenient and swift.
Three structures that O-ring seal matches, both can ensure sealing effect, avoided leaking, and there is no again additionally to increase the area of contact of seal ring and piston rod, also can not increase extra frictional force in the situation that of piston rod high-speed motion.
Brief description of the drawings
Fig. 1 is the schematic diagram of the embodiment of the present invention 1 disclosed piston sealing structure.
Embodiment
In order to make object of the present invention, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
It should be noted that, in the present embodiment, in the time that a certain technical characteristics is called as on " being fixed on " another technical characteristics, it can be directly on another technical characteristics or also can have other technical characteristics placed in the middle.When a technical characteristics is considered to " connection " on another technical characteristics time, it can be directly connected to another technical characteristics or may have other technical characteristics placed in the middle simultaneously.Term " vertical ", " level ", " left side ", " right side " and similar statement that the present embodiment uses are just for illustrative purposes.
Embodiment 1, and as shown in Figure 1, the present embodiment discloses a kind of piston sealing structure, comprise positioning block 1, on positioning block, offer the step hole 3 for holding seal ring and piston rod 2, the inwall of described step hole has locating slot 4 along circumferential direction, and described locating slot is reversed V-shape in the cross section of vertical direction; Also comprise for packing the first O-ring seal 5 in locating slot into, be set in the second O-ring seal 6 in the first O-ring seal and be clipped in the first O-ring seal and the second O-ring seal between the 3rd O-ring seal 7, wherein the first O-ring seal is the reversed V-shape corresponding with locating slot cross section in the cross section of vertical direction, the second O-ring seal is inverted U-shaped in the cross section of vertical direction, and the 3rd O-ring seal is oval in the cross section of vertical direction.
Described positioning block is cuboid shape.
The quantity of described step hole is two or more.
The quantity of described locating slot is two, is located at respectively on two steps up and down of described step hole.One group of three O-ring seal is all housed, further to optimize sealing effect in each locating slot.
Described the first O-ring seal is packing into after locating slot, and the summit of its upper and lower both sides will be stretched out outside locating slot.Can further optimize like this sealing effect, only have summit to stretch out outside locating slot simultaneously, can too not increase the surface friction drag of piston rod.
Described the second O-ring seal is set-located with the relative structural type of cross section opening direction mutually with the first O-ring seal.Between two seal rings, closely cooperate, so that enhanced leaktightness effect.
The disclosed piston sealing structure of the present embodiment, the sectional shape of the first O-ring seal is corresponding with the sectional shape of locating slot, can easily the first O-ring seal be packed in locating slot like this, again the second O-ring seal is set in the first O-ring seal subsequently, and sandwiches the 3rd O-ring seal between the first O-ring seal and the second O-ring seal.Whole process is all manually actuated, convenient and swift.
Three structures that O-ring seal matches, both can ensure sealing effect, avoided leaking, and there is no again additionally to increase the area of contact of seal ring and piston rod, also can not increase extra frictional force in the situation that of piston rod high-speed motion.
Claims (6)
1. a piston sealing structure, comprises positioning block, offers the step hole for holding seal ring and piston rod on positioning block, it is characterized in that: the inwall of described step hole has locating slot along circumferential direction, and described locating slot is reversed V-shape in the cross section of vertical direction; Also comprise for packing the first O-ring seal in locating slot into, be set in the second O-ring seal in the first O-ring seal and be clipped in the first O-ring seal and the second O-ring seal between the 3rd O-ring seal, wherein the first O-ring seal is the reversed V-shape corresponding with locating slot cross section in the cross section of vertical direction, the second O-ring seal is inverted U-shaped in the cross section of vertical direction, and the 3rd O-ring seal is oval in the cross section of vertical direction.
2. piston sealing structure according to claim 1, is characterized in that: described positioning block is cuboid shape.
3. piston sealing structure according to claim 1, is characterized in that: the quantity of described step hole is two or more.
4. piston sealing structure according to claim 1, is characterized in that: the quantity of described locating slot is two, is located at respectively on two steps up and down of described step hole.
5. piston sealing structure according to claim 1, is characterized in that: described the first O-ring seal is packing into after locating slot, and the summit of its upper and lower both sides will be stretched out outside locating slot.
6. piston sealing structure according to claim 1, is characterized in that: described the second O-ring seal is set-located with the relative structural type of cross section opening direction mutually with the first O-ring seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410292049.9A CN104110494B (en) | 2014-06-26 | 2014-06-26 | A kind of piston sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410292049.9A CN104110494B (en) | 2014-06-26 | 2014-06-26 | A kind of piston sealing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104110494A true CN104110494A (en) | 2014-10-22 |
| CN104110494B CN104110494B (en) | 2016-09-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410292049.9A Active CN104110494B (en) | 2014-06-26 | 2014-06-26 | A kind of piston sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104110494B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB246554A (en) * | 1924-10-27 | 1926-01-27 | Charles William Carter | Improvements in packings for stuffing boxes, pistons, or the like |
| US20070283806A1 (en) * | 2006-06-09 | 2007-12-13 | James Morrison | Additive pump |
| JP2010112465A (en) * | 2008-11-06 | 2010-05-20 | Masuo Takeuchi | Powder seal piece unit for rotary shaft |
| CN103403412A (en) * | 2011-03-10 | 2013-11-20 | 沃特世科技公司 | Seal assemblies for reciprocating and rotary applications |
| CN204004363U (en) * | 2014-06-26 | 2014-12-10 | 浙江力富特机械有限公司 | A kind of piston sealing structure |
-
2014
- 2014-06-26 CN CN201410292049.9A patent/CN104110494B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB246554A (en) * | 1924-10-27 | 1926-01-27 | Charles William Carter | Improvements in packings for stuffing boxes, pistons, or the like |
| US20070283806A1 (en) * | 2006-06-09 | 2007-12-13 | James Morrison | Additive pump |
| JP2010112465A (en) * | 2008-11-06 | 2010-05-20 | Masuo Takeuchi | Powder seal piece unit for rotary shaft |
| CN103403412A (en) * | 2011-03-10 | 2013-11-20 | 沃特世科技公司 | Seal assemblies for reciprocating and rotary applications |
| CN204004363U (en) * | 2014-06-26 | 2014-12-10 | 浙江力富特机械有限公司 | A kind of piston sealing structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104110494B (en) | 2016-09-28 |
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Effective date of registration: 20161019 Address after: 313000 Zhejiang city of Huzhou province Deqing County leidian town revitalization Road No. 9 Patentee after: ZHEJIANG LIFUDA MACHINERY CO., LTD. Address before: 313000 Zhejiang city of Huzhou province Deqing County leidian town revitalization Road No. 9 Patentee before: ZHEJIANG LIFUTE MECHANICAL CO., LTD. |
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Effective date of registration: 20210121 Address after: No.18, Guidong, group 13, Chaoshan village, Tangqi Town, Yuhang District, Hangzhou City, Zhejiang Province, 310000 Patentee after: Zhu Jianwei Address before: 313000 9 Zhenxing Road, LEIDIAN Town, Deqing County, Huzhou City, Zhejiang Province Patentee before: ZHEJIANG LIFUDA MACHINERY Co.,Ltd. |