CN109737205A - A kind of dynamic sealing position compensation device - Google Patents
A kind of dynamic sealing position compensation device Download PDFInfo
- Publication number
- CN109737205A CN109737205A CN201910171368.7A CN201910171368A CN109737205A CN 109737205 A CN109737205 A CN 109737205A CN 201910171368 A CN201910171368 A CN 201910171368A CN 109737205 A CN109737205 A CN 109737205A
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- cylinder
- piston
- sealing ring
- stock
- connects
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Abstract
The invention discloses a kind of dynamic sealing position compensation devices, piston rod connects cylinder, stock and piston are equipped in cylinder, aperture is provided with above cylinder, stock one end connects piston, the other end passes through aperture and connects sealing ring, sealing ring connects rubber ring, sealing ring is placed in gland, there are spaces between rubber ring and gland, guarantee there are enough air pressures to keep sealing state on sealing ring when piston motion, this space is connected to by hollow pipe with the piston lower space in cylinder, Simple safety valve is housed in cylinder bottom opening, guarantee that air pressure is not too big, junction is equipped with gaseous core below the piston of hollow pipe and cylinder.The beneficial effects of the invention are as follows can be effectively solved leakage caused by abrasion of the sealing ring when dynamic sealing moves back and forth; and then achieve the purpose that protect sealing ring, production loss is avoided, be conducive to integrally produce goes on smoothly; structure is relatively succinct simultaneously, has preferable practicability.
Description
Technical field
The invention belongs to mechanical equipment technical fields, are related to the device of middle low speed Large Piston bar movement.
Background technique
With the development of science and technology, take much count of the development of sealing technique both at home and abroad, and achieve achievement, the luxuriant and rich with fragrance benefit of such as Holland
The Novel sliding sealing device effect of " sock cover type sealing " device of general company and joint Stirling engine company, Sweden is all very
Good, the latter is at low cost, lasts a long time.In the dynamic sealing of some structures, equipped with spring or O-ring as position on the outside of sealing ring
Set compensation, but either spring or O-ring can all be deflected into fatigue under oppression state and make the big discounting of compensating action
Button, as a result causes to reveal, and replaces every the short time and increases cost again, is unfavorable for long-run development.
Summary of the invention
The purpose of the present invention is to provide a kind of dynamic sealing position compensation devices, and the beneficial effects of the invention are as follows can be effective
Solve sealing ring dynamic sealing move back and forth when abrasion caused by leakage, and then achieve the purpose that protect sealing ring, keep away
Production loss is exempted from, be conducive to integrally produce goes on smoothly, while structure is relatively succinct, has preferable practicability.
The technical scheme adopted by the invention is that including piston rod, piston rod connection cylinder, stock and work are equipped in cylinder
Plug, cylinder top are provided with aperture, and stock one end connects piston, the other end passes through aperture and connects sealing ring, and sealing ring connects rubber
Circle, sealing ring are placed in gland, and there are space between rubber ring and gland, hollow pipe will be below the piston in this space and cylinder
Space connection is equipped with Simple safety valve in cylinder bottom opening, guarantees that air pressure is not too big, under the piston of hollow pipe and cylinder
Square junction is equipped with gaseous core.
Further, the length of stock and the stroke of piston rod are approximately equal.
Further, Simple safety valve is made of valve seat, spring and spool, spring connecting valve seat bottom and spool, spool envelope
Firmly cylinder bottom is open.
Detailed description of the invention
Fig. 1 is a kind of dynamic sealing position compensation apparatus structure schematic diagram；
Fig. 2 is Simple safety valve structural schematic diagram.
In figure, 1. piston rods, 2. sealing rings, 3. rubber rings, 4. glands, 5. hollow pipes, 6. stocks, 7. cylinders, 8. pistons,
9. Simple safety valve, 901. valve seats, 902. springs, 903. spools, 10. gaseous cores.
Specific embodiment
The present invention is described in detail With reference to embodiment.
The present invention is as depicted in figs. 1 and 2, including piston rod 1, piston rod 1 connect cylinder 7, be equipped in cylinder 7 stock 6 with
Piston 8 is provided with aperture above cylinder 7, and 6 one end of stock connects piston 8, the other end passes through aperture and connects sealing ring 2,
Sealing ring 2 connects rubber ring 3, and sealing ring 2 is placed in gland 4, and there are spaces between rubber ring 3 and gland 4, hollow
This space is connected to by pipe 5 with 8 lower space of piston in cylinder 7.To prevent 7 air pressure of cylinder excessive, at 7 bottom opening of cylinder
Equipped with Simple safety valve 9, guarantee that air pressure is not too big.The 8 lower section junction of piston of hollow pipe 5 and cylinder 7 is equipped with gaseous core 10.
When piston rod 1 moves back and forth, cylinder 7 is driven to move, and sealing ring 2 is static, so the stock 6 connect with gland and
Piston 8 is static, and entire air pump does relatively reciprocating motion, and the length of stock 6 is approximately equal with the stroke of piston rod 1, gives
The enough air pressures of elastic tape 3 in gland 4 make so that sealing ring 2 keeps enough position compensations.
Simple safety valve 9 is made of valve seat 901, spring 902 and spool 903,902 connecting valve seat of spring, 901 bottom and valve
Core 903, spool 903 seal 7 bottom opening of cylinder.After moving back and forth repeatedly, 7 following pressure of cylinder becomes larger, when 7 internal pressure of cylinder
When power is greater than 902 elastic force of spring, spool, which moves downward, washes 7 lower opening of cylinder open, and outside air flows into cylinder 7, and pressure becomes
Small, when air pressure is less than 902 elastic force of spring to the power of spool 903, spring 902 restores certain length, and spool 903 is kept in the center,
It is resealed inside cylinder 7, to prevent the excessive obstruction piston rod proper motion of pressure, spring 902 is initially in a level pressure
Contracting state, guarantee just wash spool 903 open when will not be little because of initial gas pressure.There is an aperture above cylinder 7, when 8 phase of piston
When moving upwards to cylinder 7, lower section volume increases, and pressure reduces, while top enters air via aperture；When piston 8 is downward
When movement, lower section volume reduces, and pressure increases, and lower section pressure increases, and washes gaseous core 10 open, when piston relative upward movement, because
The presence of gaseous core reduce air pressure in gland will not, is passed in gland 4 by hollow pipe 5, give rubber ring 3 enough pressure
So that always existing position compensation.
The above is only not to make limit in any form to the present invention to better embodiment of the invention
System, any simple modification that embodiment of above is made according to the technical essence of the invention, equivalent variations and modification,
Belong in the range of technical solution of the present invention.
Claims (3)
1. a kind of dynamic sealing position compensation device, it is characterised in that: connect cylinder including piston rod, piston rod, be equipped in cylinder
Stock and piston, cylinder top are provided with aperture, and stock one end connects piston, the other end passes through aperture and connects sealing ring, sealing ring
Rubber ring is connected, sealing ring is placed in gland, and there are space between rubber ring and gland, hollow pipe will be in this space and cylinder
The connection of piston lower space is equipped with Simple safety valve in cylinder bottom opening, guarantees that air pressure is not too big, hollow pipe and cylinder
Piston below junction be equipped with gaseous core.
2. according to a kind of dynamic sealing position compensation device described in claim 1, it is characterised in that: the length and piston of the stock
The stroke of bar is approximately equal.
3. according to a kind of dynamic sealing position compensation device described in claim 1, it is characterised in that: the Simple safety valve is by valve
Seat, spring and spool composition, spring connecting valve seat bottom and spool, spool seal cylinder bottom opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171368.7A CN109737205A (en) | 2019-03-07 | 2019-03-07 | A kind of dynamic sealing position compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171368.7A CN109737205A (en) | 2019-03-07 | 2019-03-07 | A kind of dynamic sealing position compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109737205A true CN109737205A (en) | 2019-05-10 |
Family
ID=66369761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910171368.7A Pending CN109737205A (en) | 2019-03-07 | 2019-03-07 | A kind of dynamic sealing position compensation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109737205A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927053A (en) * | 2019-12-13 | 2020-03-27 | 蒋国政 | Environmental protection material toxic substance volatilization check out test set |
| CN114087360A (en) * | 2021-10-18 | 2022-02-25 | 东风汽车集团股份有限公司 | Plugging device and part |
-
2019
- 2019-03-07 CN CN201910171368.7A patent/CN109737205A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927053A (en) * | 2019-12-13 | 2020-03-27 | 蒋国政 | Environmental protection material toxic substance volatilization check out test set |
| CN110927053B (en) * | 2019-12-13 | 2022-07-01 | 深圳市集洁号环保科技有限公司 | Environmental protection material toxic substance volatilization check out test set |
| CN114087360A (en) * | 2021-10-18 | 2022-02-25 | 东风汽车集团股份有限公司 | Plugging device and part |
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