CN207762056U - A kind of marine low speed diesel engine hydraulic system vent valve - Google Patents
A kind of marine low speed diesel engine hydraulic system vent valve Download PDFInfo
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- CN207762056U CN207762056U CN201721880096.0U CN201721880096U CN207762056U CN 207762056 U CN207762056 U CN 207762056U CN 201721880096 U CN201721880096 U CN 201721880096U CN 207762056 U CN207762056 U CN 207762056U
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- spool
- plug
- valve casing
- diesel engine
- low speed
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Abstract
The utility model belongs to marine low speed diesel engine field, specially a kind of marine low speed diesel engine hydraulic system vent valve.The vent valve includes valve casing, spring, spool and throttling plug screw；Under assembled state, the spring pocket is on the plug of spool；The spool is integrally nested in inside valve casing, the venthole of the plug alignment valve casing of spool, the throttle orifice of the flow inlet alignment throttling plug screw of spool；The throttling plug screw is threadedly secured on one end of valve casing opening.Air remaining in hydraulic components and piping can be excluded hydraulic system by the utility model under low voltage situations；And when hydraulic work system, i.e., under high-pressure situations, vent valve is closed, and does not influence the normal work of hydraulic system, has achieved the purpose that promote marine low speed diesel engine runnability.
Description
Technical field
The utility model belongs to marine low speed diesel engine field, and in particular to a kind of marine low speed diesel engine hydraulic system is saturating
Air valve.
Background technology
Current marine low speed diesel engine mostly uses the hydraulicdriven electrichydraulic control mode of electrical control-, control mode tool
There are following two features：
1. by the conversion of electric signal, the different drive manners of machinery are realized；
2. required precision is high, either electric signal or hydraulicdriven accuracy has higher requirement.
Marine low speed diesel engine is in assembly or maintenance, it is often necessary to dismantle, replace hydraulic components, in this process
Middle hydraulic oil certainly will stop recycling, and after completing dismounting or dress again, necessarily remain in new hydraulic components and piping
Air has so resulted in following problem：
1. generating pneumatic hammer in hydraulic oil, damaged so as to cause certain precision parts；
2. hydraulic drive is not in place, diesel engine runnability is caused deviation occur.
Therefore, it solves the problems, such as residual air present in existing marine low speed diesel engine hydraulic system, provides a kind of ventilative
The new structural design of valve, with ensure hydraulic system in normal work can will wherein remaining air discharge it is extremely urgent.
Invention content
To solve the problems, such as residual air present in existing marine low speed diesel engine hydraulic system, while protecting diesel engine not
It is damaged, the utility model proposes a kind of marine low speed diesel engine hydraulic system vent valves.
The utility model proposes a kind of marine low speed diesel engine hydraulic system vent valves comprising valve casing, spring, spool
With throttling plug screw；The valve casing is closed for one end, the tubular structure of open at one end, and the center for closing one end is equipped with venthole, opens
The inner wall of mouth one end is equipped with internal thread；
The internal diameter of the spool logical tubular structure in being, diameter and valve casing matches；One end of the spool is equipped with influent stream
Mouthful, the other end is equipped with throttle orifice；The center that the spool is equipped with throttle orifice one end is equipped with plug, and throttle orifice setting is in plug week
It encloses, plug diameter is matched with the internal diameter of the spring, and not less than the venthole of valve casing, and the length of plug is more than under impaction state
Spring, and less than the spring under relaxed state；
Throttling plug screw one end closing, open at one end；The center for closing one end is equipped with throttle orifice, the outer wall of open one end
Equipped with external screw thread, the internal thread of external screw thread and the valve casing matches；
Under assembled state, the spring pocket is on the plug of spool；The spool is integrally nested in inside valve casing, spool
Plug is directed at the venthole of valve casing, the throttle orifice of the flow inlet alignment throttling plug screw of spool；The throttling plug screw is solid by screw thread
It is scheduled on one end of valve casing opening.
In the utility model, the plug is threadingly to be fixed on spool, and screw thread covers the one of plug
The half above length.
The beneficial effects of the utility model are：
1. reducing probability existing for pneumatic hammer, each parts of effective protection hydraulic system；
2. ensure that hydraulicdriven accuracy, it is ensured that the run action of mechanical structure can be in place.
Description of the drawings
Fig. 1 is the assembling schematic diagram of marine low speed diesel engine hydraulic system vent valve.
Fig. 2 is the cut-away illustration after the completion of each component assembling of marine low speed diesel engine hydraulic system vent valve.
Figure label：1 is valve casing, and 2 be spring, and 3 be spool, and 4 be throttling plug screw.
Specific implementation mode
The utility model is described further with embodiment combination attached drawing below.
Embodiment 1
Marine low speed diesel engine hydraulic system vent valve described in the utility model, including valve casing 1, spring 2,3 and of spool
Throttle plug screw 4；Valve casing 1 is closed for one end, the tubular structure of open at one end, and the center for closing one end is equipped with venthole, opening one
The inner wall at end is equipped with internal thread；
Spool 3 leads to tubular structure in being, the internal diameter of diameter and valve casing 1 matches；One end of spool 3 is equipped with flow inlet, separately
One end is equipped with throttle orifice；The center that spool 3 is equipped with throttle orifice one end is equipped with plug, and throttle orifice is arranged around plug, and plug is straight
Diameter is matched with the internal diameter of the spring, and not less than the venthole of valve casing 1, and the length of plug is more than the spring 2 under impaction state,
And less than the spring 2 under relaxed state；
Throttle the closing of 4 one end of plug screw, open at one end；The center for closing one end is equipped with throttle orifice, and the outer wall of open one end is set
There are external screw thread, the internal thread of external screw thread and the valve casing 1 to match；
Under assembled state, spring 2 is sleeved on the plug of spool 3；Spool 3 is whole to be nested in inside valve casing 1, and spool 3 blocks up
The venthole of head alignment valve casing 1, the throttle orifice of the flow inlet alignment throttling plug screw 4 of spool 3；The throttling plug screw 4 passes through screw thread
It is fixed on the open one end of valve casing 1.
Low pressure oil in hydraulic system is from the throttling inflow vent valve of plug screw 4, after the throttle orifice for flowing through spool 3, from valve casing 1
Venthole flows out, and enters oil return system.Hydraulic system is discharged with low-pressure hydraulic oil in air in such hydraulic oil together.When
After hydraulic system is started to work, hydraulic fluid pressure increases, due to the presence of throttle orifice in throttling plug screw 4 and spool 3, vent valve
Can not be by the hydraulic oil of big flow, therefore hydraulic oil is deposited between spool 3 and throttling plug screw 4, pressure acts on spool 3
On, holddown spring 2, the venthole that plug is close to valve casing 1 are turned off immediately, keep high-pressure and hydraulic oil pressure so that hydraulic section
Part can work normally.After hydraulic system is stopped, the hydraulic oil for being deposited in spool 3 between the plug screw 4 that throttles is from throttling
The throttle orifice of plug screw 4 flows out, and spool 3 returns to original position, and the venthole of valve casing 1 restores unobstructed, and vent valve is opened.
Embodiment 2：
On the basis of using embodiment 1, further using being threadedly secured in plug on spool, the length of plug can be with
Changed by rotating screw thread.According to the actual pressure demand of hydraulic oil in hydraulic system, required plug length is determined.Using
This scheme can be used as general part, adapt to the demand of different low-speed diesel engines.
Claims (2)
1. a kind of marine low speed diesel engine hydraulic system vent valve, which is characterized in that it includes valve casing, spring, spool and throttling
Plug screw；The valve casing is closed for one end, the tubular structure of open at one end, and the center for closing one end is equipped with venthole, open one end
Inner wall be equipped with internal thread；
The internal diameter of the spool logical tubular structure in being, diameter and valve casing matches；One end of the spool is equipped with flow inlet, separately
One end is equipped with throttle orifice；The center that the spool is equipped with throttle orifice one end is equipped with plug, and throttle orifice is arranged around plug, plug
Diameter is matched with the internal diameter of the spring, and not less than the venthole of valve casing, and the length of plug is more than the spring under impaction state,
And less than the spring under relaxed state；
Throttling plug screw one end closing, open at one end；The center for closing one end is equipped with throttle orifice, and the outer wall of open one end is equipped with
The internal thread of external screw thread, external screw thread and the valve casing matches；
Under assembled state, the spring pocket is on the plug of spool；The spool is integrally nested in inside valve casing, the plug of spool
It is directed at the venthole of valve casing, the throttle orifice of the flow inlet alignment throttling plug screw of spool；The throttling plug screw is threadedly secured to
On one end of valve casing opening.
2. marine low speed diesel engine hydraulic system vent valve according to claim 1, which is characterized in that the plug is
It is threadingly fixed on spool, screw thread covers more than half length of plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721880096.0U CN207762056U (en) | 2017-12-28 | 2017-12-28 | A kind of marine low speed diesel engine hydraulic system vent valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721880096.0U CN207762056U (en) | 2017-12-28 | 2017-12-28 | A kind of marine low speed diesel engine hydraulic system vent valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207762056U true CN207762056U (en) | 2018-08-24 |
Family
ID=63185597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721880096.0U Active CN207762056U (en) | 2017-12-28 | 2017-12-28 | A kind of marine low speed diesel engine hydraulic system vent valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207762056U (en) |
-
2017
- 2017-12-28 CN CN201721880096.0U patent/CN207762056U/en active Active
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