CN204716323U - Air motor pressure self-balancing intake valve group - Google Patents
Air motor pressure self-balancing intake valve group Download PDFInfo
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- CN204716323U CN204716323U CN201520462111.4U CN201520462111U CN204716323U CN 204716323 U CN204716323 U CN 204716323U CN 201520462111 U CN201520462111 U CN 201520462111U CN 204716323 U CN204716323 U CN 204716323U
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Abstract
Air motor pressure self-balancing intake valve group, relates to engine intake valve.Comprise valve (1) and valve guide bushing (2), the valve stem (4) of described valve (1) in its umbrella body (3) top is provided with piston (5), the lower end of described valve guide bushing (2) is provided with the valve chamber (6) of tubular, the sidewall in valve chamber (6) is provided with pressed gas import (7) and balance channel (8), balance channel (8) upper end open in valve chamber (6) inwall near valve guide bushing (2) side, lower end is communicated with cylinder, umbrella body (3) and valve chamber (6) lower end mouth of valve (1) are sealed and matched, it is interior between the upper end-hole and pressed gas import (7) of balance channel (8) that piston (5) is placed in valve chamber (6), piston (5) sidewall coordinates with valve chamber (6) inner wall sealing.It has the advantage that structure is simple, cost is low, effectively can solve air motor and raises with propellant pressure and produce the problem of valve leakage.
Description
Technical field
The utility model relates to engine intake valve, particularly the architecture advances of air motor intake valve group.
Background technique
In the experimentation of air motor, along with the rising of propellant pressure, utilize original air valve structure, cannot ensure the effective sealing of intake valve, under the gas pressure constantly raised, valve can overcome spring force gradually and produce leakage phenomenon.Solve the problem, only increase spring strength simply, not only can increase motor power consumption, also can aggravate the wearing and tearing of parts.
Summary of the invention
Technical problem to be solved in the utility model is: provide a kind of air motor pressure self-balancing intake valve group, with solve air motor with propellant pressure raise and produce valve leak problem.
Technical solution of the present utility model is: it comprises valve and valve guide bushing, the valve stem of described valve above its umbrella body is provided with piston, the lower end of described valve guide bushing is provided with the valve chamber of tubular, the sidewall in valve chamber is provided with pressed gas import and balance channel, balance channel upper end open in valve cavity wall near valve guide bushing side, lower end is communicated with cylinder, umbrella body and the valve chamber lower end mouth of valve are sealed and matched, piston is placed in valve chamber between the upper end-hole of balance channel and pressed gas import, and piston sidewall and valve cavity wall are sealed and matched.
Technique effect of the present utility model is: structure is simple, cost is low advantage that it has, and effectively can solve air motor and raises with propellant pressure and produce the problem that valve leaks.While realizing engine reliable work, turn avoid the wearing and tearing increasing valve spring elastic force and cause to camshaft, and the engine interior power consumption increased thus.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, it comprises valve 1 and valve guide bushing 2, the valve stem 4 of described valve 1 above its umbrella body 3 is provided with piston 5, the lower end of described valve guide bushing 2 is provided with the valve chamber 6 of tubular, the sidewall in valve chamber 6 is provided with pressed gas import 7 and balance channel 8, balance channel 8 upper end open in valve chamber 6 inwall near valve guide bushing 2 side, lower end is communicated with cylinder, umbrella body 3 and valve chamber 6 lower end mouth of valve 1 are sealed and matched, it is interior between the upper end-hole and pressed gas import 7 of balance channel 8 that piston 5 is placed in valve chamber 6, piston 5 sidewall coordinates with valve chamber 6 inner wall sealing.Piston 5 can slide up and down along valve chamber 6 inwall.
The sidewall of described piston 5 is provided with annular groove 9, is provided with seal ring 10 in annular groove 9.
Described seal ring 10 is metallic packing ring.Seal ring 10 can with reference to piston ring structure.
The utility model can overcome the impact of gas pressure on the effect of valve spring return, and be confirmed in practice, it is satisfactory for result, can ensure that motor is under the condition of any foreign gas pressure, all can reliably working.
By balance channel, piston remains identical with the pressure in cylinder near the space of valve guide bushing side.The gas pressure of namely no matter coming from inlet end has much, and acting on valve umbrella body and piston is all contrary a pair equilibrant in equal and opposite in direction direction.Intake valve just only by the unlatching active force that return active force and the rocking arm of valve spring transmit, and is not subject to the impact of propellant pressure.
When intake valve is in closed condition, how the pressure no matter in air intake branch changes, because the space of piston near valve guide bushing side is communicated with cylinder, so valve only remains on original seal position under the effect of return spring.When intake valve is in opening state, pressure in cylinder can increase along with the increase of insufflation gas amount, but owing to valve chamber there being the air flue towards cylinder, just make piston back side cavity pressure keep synchronous with cylinder pressure all the time to change, also make between piston and umbrella body, to form a pair transient equiliblium power, and on valve axial direction, making a concerted effort that pressed gas is formed is zero, any impact can not be produced on the action of valve.
This is not just while increasing return spring elastic force, under ensure that pressure change and change of state (open, close) situation, the reliable reset of intake valve and effective sealing, both the reliably working of motor had been achieved, turn avoid the wearing and tearing caused to camshaft because increasing valve spring elastic force, and the engine interior power consumption increased thus.
Claims (3)
1. air motor pressure self-balancing intake valve group, comprise valve (1) and valve guide bushing (2), it is characterized in that, the valve stem (4) of described valve (1) in its umbrella body (3) top is provided with piston (5), the lower end of described valve guide bushing (2) is provided with the valve chamber (6) of tubular, the sidewall in valve chamber (6) is provided with pressed gas import (7) and balance channel (8), balance channel (8) upper end open in valve chamber (6) inwall near valve guide bushing (2) side, lower end is communicated with cylinder, umbrella body (3) and valve chamber (6) lower end mouth of valve (1) are sealed and matched, it is interior between the upper end-hole and pressed gas import (7) of balance channel (8) that piston (5) is placed in valve chamber (6), piston (5) sidewall coordinates with valve chamber (6) inner wall sealing.
2. air motor pressure self-balancing intake valve group as claimed in claim 1, it is characterized in that, the sidewall of described piston (5) is provided with annular groove (9), is provided with seal ring (10) in annular groove (9).
3. air motor pressure self-balancing intake valve group as claimed in claim 2, it is characterized in that, described seal ring (10) is metallic packing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520462111.4U CN204716323U (en) | 2015-06-27 | 2015-06-27 | Air motor pressure self-balancing intake valve group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520462111.4U CN204716323U (en) | 2015-06-27 | 2015-06-27 | Air motor pressure self-balancing intake valve group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204716323U true CN204716323U (en) | 2015-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520462111.4U Active CN204716323U (en) | 2015-06-27 | 2015-06-27 | Air motor pressure self-balancing intake valve group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204716323U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929718A (en) * | 2015-06-27 | 2015-09-23 | 胡学文 | Pressure self-balancing inlet valve set of pneumatic engine |
-
2015
- 2015-06-27 CN CN201520462111.4U patent/CN204716323U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929718A (en) * | 2015-06-27 | 2015-09-23 | 胡学文 | Pressure self-balancing inlet valve set of pneumatic engine |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |