CN213928985U - Sealing device for oil cylinder - Google Patents
Sealing device for oil cylinder Download PDFInfo
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- CN213928985U CN213928985U CN202022737290.1U CN202022737290U CN213928985U CN 213928985 U CN213928985 U CN 213928985U CN 202022737290 U CN202022737290 U CN 202022737290U CN 213928985 U CN213928985 U CN 213928985U
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- oil cylinder
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- side wall
- piston
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Abstract
The utility model provides a sealing device for hydro-cylinder, including the hydro-cylinder body, it is provided with the hydro-cylinder piston to slide in the hydro-cylinder body, the inboard lateral wall middle part of hydro-cylinder piston is provided with splint along circumference, be provided with a plurality of piston seal along circumference on the splint lateral wall, piston seal closely supports on hydro-cylinder body inside wall, be provided with a discharge valve on the piston seal lateral wall, discharge valve is located between hydro-cylinder piston and the hydro-cylinder body exit end, and be provided with a filter screen in the discharge valve, the inside and outside both sides of dust cover opening part are provided with first rubber scraper and second rubber scraper along opening edge department circumference, first rubber scraper and second rubber scraper closely laminate with hydro-cylinder pole lateral wall, be provided with a drain on the dust cover. The utility model discloses make the user become more convenient and high-efficient to the use of hydro-cylinder, can avoid the hydro-cylinder pole to adsorb the dust for a long time and the stability and the leakproofness variation of the hydro-cylinder that causes effectively, and then cause the hydro-cylinder result of use to worsen easily.
Description
Technical Field
The utility model belongs to hydro-cylinder equipment field especially relates to a sealing device for hydro-cylinder.
Background
In the prior art, the hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and performs linear reciprocating motion, has simple structure and reliable work, adopts the hydraulic actuating element to realize a driving device of the reciprocating motion, can omit a speed reducing device, has no transmission clearance and moves stably, and is widely applied to hydraulic systems of various machines. The output force of the hydraulic cylinder is in direct proportion to the effective area of the piston and the pressure difference between the two sides of the effective area; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffering device and an exhaust device.
At present, when the hydraulic cylinder is used in a factory machining environment, due to the fact that the surface of a piston rod of the hydraulic cylinder is prone to adsorbing dirt after the piston rod extends out of the oil cylinder, after the hydraulic cylinder is used, the dirt is prone to being brought into the oil cylinder, using stability and sealing performance are affected, and therefore the problem needs to be solved.
Disclosure of Invention
The to-be-solved problem of the utility model is to provide a sealing device for hydro-cylinder especially is fit for the hydro-cylinder in the use, places the hydro-cylinder pole and adsorbs the dust for a long time and the stability and the leakproofness variation of the hydro-cylinder that cause.
In order to solve the technical problem, the utility model discloses a technical scheme is: a sealing device for an oil cylinder is provided, which comprises an oil cylinder body, an oil cylinder piston is arranged in the oil cylinder body in a sliding manner, a clamping plate is arranged at the middle part of the side wall of the inner side of the oil cylinder piston along the circumferential direction, a plurality of piston sealing rings are arranged on the outer side wall of the clamping plate along the circumferential direction, the piston sealing rings tightly abut against the inner side wall of the oil cylinder body, an exhaust valve is arranged on the side wall of the piston sealing ring and is positioned between the oil cylinder piston and the outlet end of the oil cylinder body, a filter screen is arranged in the exhaust valve, an oil cylinder rod is arranged at the middle part of the free end of the oil cylinder piston, a plugging block is arranged at the outlet of the oil cylinder body, a through hole is arranged on the plugging block, the oil cylinder rod penetrates out of the through hole of the plugging block, a groove body is arranged on the inner side wall of the through hole of the plugging block, a second sealing ring is arranged in each groove body of the plugging block, and the part of the plugging block positioned at the inner side of the oil cylinder body is outwards bent and tightly attached to the inner side wall of the oil cylinder body, the edge of the outer wall of the sealing block in the oil cylinder body is circumferentially provided with a first sealing ring which is tightly attached to the inner side wall of the oil cylinder body, the outer side wall of the oil cylinder body is provided with a mounting ring along the through hole of the sealing block, the mounting ring is sleeved with a sealing ring, an oil cylinder rod passes through the annular hole of the sealing ring, the inner side wall of the sealing ring is circumferentially provided with a groove body, a third sealing ring is arranged in the groove body of the inner side wall of the sealing ring, the third sealing ring is tightly attached to the outer side wall of the oil cylinder rod, one side of the sealing ring close to the oil cylinder body is circumferentially provided with a sealing strip which is tightly attached to the outer walls of the oil cylinder body and the sealing block, the end part of the oil cylinder body is circumferentially provided with a dust cover, the dust cover is provided with an opening, the free end of the oil cylinder rod penetrates out of the opening of the dust cover, the inner side and the outer side of the opening of the dust cover are circumferentially provided with a first rubber scraper blade and a second rubber scraper along the edge of the opening, first rubber scraper and second rubber scraper closely laminate with the hydro-cylinder pole lateral wall, are provided with a drain on the dust guard, are provided with the sealing plug on the drain.
Furthermore, the piston sealing rings are five and arranged at equal intervals.
In the use, the user can pull out the drain sealing plug of dust cover after using a period, discharges the greasy dirt of dust cover, and because the effect of shutoff piece and first sealing washer for the dustproof sealing effect of hydro-cylinder body inside is better.
The utility model has the advantages and positive effects that: by adopting the technical scheme, the use of the oil cylinder by a user becomes more convenient and efficient, the stability and the sealing performance of the oil cylinder are effectively prevented from being poor due to the fact that the oil cylinder rod adsorbs dust for a long time, the use effect of the oil cylinder is easy to be poor, and the service life of the oil cylinder is shortened; just the utility model has the advantages of simple structure, easy maintenance, low processing cost, high production efficiency, etc.
Drawings
Fig. 1 is a schematic front view of the internal structure of the present invention;
fig. 2 is a front view structure diagram of the present invention.
In the figure:
1. oil cylinder body 2, oil cylinder piston 3 and oil cylinder rod
4. Piston seal ring 5, splint 6, discharge valve
7. Filter screen 8, plugging block 9, first sealing washer
10. Second sealing ring 11, mounting ring 12 and sewage draining outlet
13. Sealing ring 14, plugging strip 15 and third sealing ring
16. First squeegee 17, second squeegee 18, dust cover
Detailed Description
As shown in figure 1 or 2, the utility model relates to a sealing device for an oil cylinder, which comprises an oil cylinder body 1, an oil cylinder piston 2 is arranged in the oil cylinder body 1 in a sliding way, a clamping plate 5 is arranged at the middle part of the side wall of the inner side of the oil cylinder piston 2 along the circumferential direction, a plurality of piston sealing rings 4 are arranged on the outer side wall of the clamping plate 5 along the circumferential direction, the piston sealing rings 4 are tightly abutted against the inner side wall of the oil cylinder body 1, an exhaust valve 6 is arranged on the side wall of the piston sealing rings 4, the exhaust valve 6 is positioned between the oil cylinder piston 2 and the outlet end of the oil cylinder body 1, a filter screen 7 is arranged in the exhaust valve 6, an oil cylinder rod 3 is arranged at the middle part of the free end of the oil cylinder piston 2, a plugging block 8 is arranged at the outlet of the oil cylinder body 1, a through hole is arranged on the plugging block 8, the oil cylinder rod 3 penetrates out of the through hole of the plugging block 8, a groove body is arranged on the inner side wall of the through hole of the plugging block 8, and a second sealing ring 10 is arranged in each groove body of the plugging block 8, the part of the blocking block 8, which is positioned at the inner side of the oil cylinder body 1, is outwards bent and tightly attached to the inner side wall of the oil cylinder body 1, the edge of the outer wall, which is positioned in the oil cylinder body 1, of the blocking block 8 is provided with a first sealing ring 9 along the circumferential direction, the first sealing ring 9 is tightly attached to the inner side wall of the oil cylinder body 1, a mounting ring 11 is arranged at the position, along the through hole of the blocking block 8, of the outer side wall of the oil cylinder body 1, a sealing ring 13 is sleeved on the mounting ring 11, the oil cylinder rod 3 penetrates through the annular hole of the sealing ring 13, a groove body is circumferentially arranged on the inner side wall of the sealing ring 13, a third sealing ring 15 is arranged in the groove body of the inner side wall of the sealing ring 13, the third sealing ring 15 is tightly attached to the outer side wall of the oil cylinder rod 3, one side, which is close to the oil cylinder body 1, is circumferentially provided with a blocking strip 14, the blocking strip 14 is tightly attached to the outer walls of the oil cylinder body 1 and the blocking block 8, the end of the oil cylinder body 1 is circumferentially provided with a dust cover 18, the dust cover 18 is provided with an opening, the free end of the oil cylinder rod 3 penetrates out of the opening of the dust cover 18, a first rubber scraper 16 and a second rubber scraper 17 are arranged on the inner side and the outer side of the opening of the dust cover 18 along the circumferential direction of the edge of the opening, the first rubber scraper 16 and the second rubber scraper 17 are tightly attached to the outer side wall of the oil cylinder rod 3, the dust cover 18 is provided with a drain 12, and the drain 12 is provided with a sealing plug.
Furthermore, the number of the piston sealing rings 4 is five, and the piston sealing rings are arranged at equal intervals.
In the use, the user can pull out the 12 sealing plugs of drain of dust cover 18 after using a period of time, discharges the greasy dirt of dust cover 18, and because the effect of shutoff piece 8 and first sealing washer 9 for the dustproof sealing effect of hydro-cylinder body 1 inside is better.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (2)
1. The utility model provides a sealing device for hydro-cylinder which characterized in that: comprises an oil cylinder body (1), an oil cylinder piston (2) is arranged in the oil cylinder body (1) in a sliding manner, a clamping plate (5) is arranged at the middle part of the inner side wall of the oil cylinder piston (2) along the circumferential direction, a plurality of piston sealing rings (4) are arranged on the outer side wall of the clamping plate (5) along the circumferential direction, the piston sealing rings (4) are tightly abutted against the inner side wall of the oil cylinder body (1), an exhaust valve (6) is arranged on the side wall of the piston sealing rings (4), the exhaust valve (6) is positioned between the oil cylinder piston (2) and the outlet end of the oil cylinder body (1), a filter screen (7) is arranged in the exhaust valve (6), an oil cylinder rod (3) is arranged at the middle part of the free end of the oil cylinder piston (2), a blocking block (8) is arranged at the outlet of the oil cylinder body (1), and a through hole is arranged on the blocking block (8), the oil cylinder rod (3) penetrates out of a through hole of a blocking block (8), a groove body is arranged on the inner side wall of the through hole of the blocking block (8), a second sealing ring (10) is arranged in each groove body of the blocking block (8), the blocking block (8) is positioned on the inner side wall of the oil cylinder body (1) by bending the inner side part of the oil cylinder body (1) outwards and tightly attaching the inner side wall of the oil cylinder body (1), a first sealing ring (9) is arranged at the edge of the outer wall of the oil cylinder body (1) along the circumferential direction, the first sealing ring (9) is tightly attached to the inner side wall of the oil cylinder body (1), a mounting ring (11) is arranged at the position of the through hole of the blocking block (8) on the outer side wall of the oil cylinder body (1), a sealing ring (13) is sleeved on the mounting ring (11), and the oil cylinder rod (3) penetrates through the ring hole of the sealing ring (13), a groove body is arranged on the inner side wall of the sealing ring (13) along the circumferential direction, a third sealing ring (15) is arranged in the groove body on the inner side wall of the sealing ring (13), the third sealing ring (15) is tightly attached to the outer side wall of the oil cylinder rod (3), the sealing ring (13) is close to one side of the oil cylinder body (1) and is provided with a blocking strip (14) along the circumferential direction, the blocking strip (14) is tightly attached to the outer walls of the oil cylinder body (1) and the blocking block (8), a dust cover (18) is arranged at the end part of the oil cylinder body (1) along the circumferential direction, an opening is arranged on the dust cover (18), the free end of the oil cylinder rod (3) penetrates out from the opening of the dust cover (18), a first rubber scraper (16) and a second rubber scraper (17) are arranged on the inner side and the outer side of the opening of the dust cover (18) along the circumferential direction, first rubber scraper (16) with second rubber scraper (17) with the tight laminating of hydro-cylinder pole (3) lateral wall, be provided with a drain (12) on dust cover (18), be provided with the sealing plug on drain (12).
2. The sealing device for the oil cylinder according to claim 1, characterized in that: the piston sealing rings (4) are five and arranged at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022737290.1U CN213928985U (en) | 2020-11-23 | 2020-11-23 | Sealing device for oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022737290.1U CN213928985U (en) | 2020-11-23 | 2020-11-23 | Sealing device for oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213928985U true CN213928985U (en) | 2021-08-10 |
Family
ID=77171839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022737290.1U Active CN213928985U (en) | 2020-11-23 | 2020-11-23 | Sealing device for oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213928985U (en) |
-
2020
- 2020-11-23 CN CN202022737290.1U patent/CN213928985U/en active Active
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