CN208474525U - Air inlet pipe vent valve - Google Patents
Air inlet pipe vent valve Download PDFInfo
- Publication number
- CN208474525U CN208474525U CN201821000730.1U CN201821000730U CN208474525U CN 208474525 U CN208474525 U CN 208474525U CN 201821000730 U CN201821000730 U CN 201821000730U CN 208474525 U CN208474525 U CN 208474525U
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- air inlet
- reset spring
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- air
- core cylinder
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Abstract
The utility model discloses a kind of air inlet pipe vent valves, including valve body, air inlet is offered on valve body, by exhaust outlet, spool, reset spring and mandrel are equipped in the cavity of valve body, valve body inlet end opposite end openings and be equipped with the end cap of closure of openings, spool includes close to inlet end setting and can be by the closed core print of air inlet, and core print is equipped with the core cylinder that reset spring is isolated with air inlet and exhaust outlet, core cylinder is open by proximal cover end, and reset spring is mounted in core cylinder；The air vent that core cylinder is in communication with the outside is offered on end cap.The utility model core cylinder is isolated by reset spring with compressed air, and reset spring is avoided directly to contact with compressed air；The setting of air vent, guarantee that air pressure suffered by reset spring is atmospheric pressure, spring stress is simple, to enable to timely respond to when admission pressure is excessive, guarantee admission pressure can also prevent the excessive opening and closing for influencing vent valve of the air pressure in spool in normal allowed band.
Description
Technical field
The utility model relates to a kind of air inlet pipe vent valves.
Background technique
Vent valve is a kind of protective device, can play the role of protecting diesel engine.In extremely cold area, environment temperature is low,
Atmospheric density is big, and under conditions of identical air inlet pipe of diesel engine, the air inflow of diesel engine is excessive, and admission pressure is excessive, causes
Diesel combustion is rapid, and pressure rise is rapid, causes maximum outbreak pressure excessive, leads to Diesel Engine Mechanical load, thermic load mistake
Greatly, the intensity of diesel engine is influenced.The effect of vent valve is: when diesel engine intake pressure is excessive, a part of gas can be discharged,
It maintains the admission pressure in air inlet pipe of diesel engine in normal allowed band, guarantees the normal work of diesel engine.
As shown in Figure 1, current vent valve, when vent valve is opened, a part of compressed air can enter spring side, spring
When continuing compression, spring is subjected to the pressure of piston side compressed air, and spring side is also directly contacted with compressed air, by
Power is complicated, causes spring hysteresis phenomenon serious.This will lead to when diesel engine intake pressure is excessive and cannot alleviate in time, make
It is excessive at diesel engine maximum outbreak pressure, cause diesel oil machine-heating load excessive, seriously affects intensity and the service life of diesel engine.
Summary of the invention
The technical problem to be solved by the present invention is to provide one kind, and spring to be avoided to contact to solve to open with compressed air
Open the air inlet pipe vent valve of braking problems.
In order to solve the above technical problems, the utility model includes the valve body in it with cavity, the inlet end of the valve body
It offers air inlet, offer exhaust outlet close to the side of inlet end, air inlet and row can be made by being equipped in the cavity of the valve body
Port connection or can by the closed spool of air inlet, make valve core reset to by the closed reset spring of air inlet and to spool move
The dynamic mandrel being oriented to, the valve body inlet end opposite end openings and be equipped with the end cap of closure of openings, feature
Be the spool include close to inlet end setting and can by the closed core print of air inlet, the core print be equipped with reset spring and
The core cylinder of air inlet and exhaust outlet isolation, the core cylinder is open by proximal cover end, and the reset spring is mounted in core cylinder；It is described
The air vent that core cylinder is in communication with the outside is offered on end cap.
The core print is structure as a whole with core cylinder.
The mandrel includes guide section and adjusts section, is set on the guide section for determining reset spring end
Position thrust block, it is described adjust section outer diameter be greater than guide section outer diameter make guide section and adjust section junction formed for pair
The step that thrust block is positioned, the outer surface for adjusting section are equipped with external screw thread, and the section that adjusts is in the stretching for stretching out end cap
End is screwed with adjusting nut.
The tune segment end is connected with hexagonal double-ended bolt.
The thrust block includes suit section and thrust section, and the reset spring is sleeved in suit section, the reset spring
Outer diameter be less than thrust section outer diameter.
The thrust block is equipped with gas passing gap, the end cap inner face between the end face and end cap inner face of end cover side
Middle part is equipped with deep gouge, and the inner end of the air vent is connected to deep gouge.
After adopting the above structure, the utility model core cylinder is isolated by reset spring with compressed air, avoids reset spring
It is directly contacted with compressed air；The setting of air vent guarantees that air pressure suffered by reset spring is atmospheric pressure, spring stress letter
It is single, to enable to timely respond to when admission pressure is excessive, guarantee that admission pressure can prevent in normal allowed band, while also
The excessive opening and closing for influencing vent valve of air pressure in spool.
Detailed description of the invention
With reference to the accompanying drawing and specific embodiment is described in further detail the utility model:
Fig. 1 is the structural schematic diagram of the prior art；
Fig. 2 is the structural schematic diagram of the utility model；
Fig. 3 is the structural schematic diagram of mandrel.
Specific embodiment
As shown in Figures 2 and 3, air inlet pipe vent valve includes the valve body 9 in it with cavity, and the inlet end of valve body 9 opens up
There is air inlet 10, offer exhaust outlet 1 close to the side of inlet end, air inlet 10 and exhaust can be made by being equipped in the cavity of valve body 9
Mouthful 1 connection or can by the closed spool of air inlet 10, make valve core reset to by the closed reset spring 3 of air inlet 10 and to valve
The mobile mandrel being oriented to of core, valve body 9 inlet end opposite end openings and be equipped with by bolt 7 by the end of closure of openings
Lid 6, spool include that close to inlet end setting and the closed core print 2 of air inlet 10, core print 2 can be equipped with always by reset spring
The 3 core cylinders 11 being isolated with air inlet 10 and exhaust outlet 1, core cylinder 11 is open by proximal cover end, and reset spring 3 is mounted on core cylinder 11
It is interior.Core print 2 is structure as a whole with core cylinder 11 in the utility model, can integrally casting shaping.In 11 outer surface of core cylinder and cavity
Small―gap suture cooperation in surface guarantees that core cylinder 11 can be free to slide in cavity.
Mandrel includes guide section 4 and adjusts section 13, is set on guide section 4 for positioning to 3 end of reset spring
Thrust block 5, adjust section 13 outer diameter be greater than guide section 4 outer diameter make guide section 4 and adjust section 13 junction formed is used for
To the step that thrust block 5 is positioned, the outer surface for adjusting section 13 is equipped with the external screw thread that can be threadedly coupled with end cap, adjusts section 13
Adjusting nut 8 is screwed in the extension end for stretching out end cap.It adjusts 13 end of section and is connected with hexagonal double-ended bolt 14, be conveniently adjusted guide section
4 protrude into the length of end cap, to adjust the pretightning force of reset spring 3, adjust spool reaction sensitivity.
Thrust block 5 includes suit section and thrust section, and reset spring 3 is sleeved in suit section, and the outer diameter of thrust section is greater than multiple
For the outer diameter of position spring 3 to effectively position to reset spring 3, the outer diameter that the outer diameter of thrust section is less than core cylinder 11 guarantees core cylinder
When 11 sliding interference will not be generated with thrust block 5.The other end of reset spring 3 is resisted against on the end face of core print 2, to guarantee to reset
The reliability of spring 3, the end face of core print 2 is settable with the consistent deep gouge of spring outer diameter, realizes in the embeddable deep gouge of reset spring 3
The positioning of inlet end end.
The air vent 12 that core cylinder 11 is in communication with the outside is offered on end cap.Thrust block 5 is close to the end face and end of end cover side
It is equipped with gas passing gap between lid inner face, is equipped with deep gouge in the middle part of end cap inner face, the inner end of air vent 12 is connected to deep gouge.
Spool is integral in the utility model, and structure is simple, easy to process；Core cylinder 11 is empty by reset spring 3 and compression
Air bound is from avoiding reset spring 3 from directly contacting with compressed air；The setting of air vent 12 guarantees air pressure suffered by reset spring 3
Power is atmospheric pressure, and spring stress is simple, to enable to timely respond to when admission pressure is excessive, guarantees admission pressure normal
In allowed band, while it can also prevent the excessive opening and closing for influencing vent valve of the air pressure in spool.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model.Previous embodiment
The utility model is described in detail, it for those skilled in the art, still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features.In every case practical new at this
Within the scope of the inventive concept of type, any modification, equivalent substitution, improvement and etc. done are all contained in the protection of the utility model
Within the scope of.
Claims (6)
1. a kind of air inlet pipe vent valve, including in it with the valve body (9) of cavity, the inlet end of the valve body (9) offer into
Port (10) offers exhaust outlet (1) close to the side of inlet end, and air inlet can be made by being equipped in the cavity of the valve body (9)
(10) be connected to exhaust outlet (1) or can by the closed spool of air inlet (10), make valve core reset to close air inlet (10)
Reset spring (3) and to the mobile mandrel being oriented to of spool, opposite end openings and installation of the valve body (9) in inlet end
Have the end cap (6) of closure of openings, it is characterized in that the spool includes being arranged close to inlet end and can closing air inlet (10)
Core print (2), the core print (2) is equipped with core cylinder that reset spring (3) is isolated with air inlet (10) and exhaust outlet (1)
(11), the core cylinder (11) is open by proximal cover end, and the reset spring (3) is mounted in core cylinder (11)；It is opened on the end cap
Equipped with the air vent that core cylinder (11) is in communication with the outside.
2. air inlet pipe vent valve according to claim 1, it is characterized in that the core print (2) and core cylinder (11) are integrated knot
Structure.
3. air inlet pipe vent valve according to claim 1 or 2, it is characterized in that the mandrel includes guide section (4) and adjusts
Section (13) is set with the thrust block (5) for being positioned to reset spring (3) end, the adjusting on the guide section (4)
The outer diameter that the outer diameter of section (13) is greater than guide section (4) makes guide section (4) and adjusts the junction formation of section (13) for thrust
The step that block (5) is positioned, the outer surface for adjusting section (13) are equipped with external screw thread, and the adjusting section (13) is stretching out end cap
Extension end be screwed with adjusting nut (8).
4. air inlet pipe vent valve according to claim 3, it is characterized in that adjusting section (13) end is connected with hexagonal spiral shell
Column (14).
5. air inlet pipe vent valve according to claim 3, it is characterized in that the thrust block includes suit section and thrust section, institute
It states reset spring (3) to be sleeved in suit section, the outer diameter of the reset spring (3) is less than the outer diameter of thrust section.
6. air inlet pipe vent valve according to claim 5, it is characterized in that the thrust block is close to the end face and end of end cover side
It is equipped with gas passing gap between lid inner face, deep gouge is equipped in the middle part of the end cap inner face, the inner end of the air vent and deep gouge connect
It is logical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821000730.1U CN208474525U (en) | 2018-06-27 | 2018-06-27 | Air inlet pipe vent valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821000730.1U CN208474525U (en) | 2018-06-27 | 2018-06-27 | Air inlet pipe vent valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208474525U true CN208474525U (en) | 2019-02-05 |
Family
ID=65215516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821000730.1U Active CN208474525U (en) | 2018-06-27 | 2018-06-27 | Air inlet pipe vent valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208474525U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115095991A (en) * | 2022-05-10 | 2022-09-23 | 王嘉豪 | Pressure adjusting device of nitrogen heater |
-
2018
- 2018-06-27 CN CN201821000730.1U patent/CN208474525U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115095991A (en) * | 2022-05-10 | 2022-09-23 | 王嘉豪 | Pressure adjusting device of nitrogen heater |
| CN115095991B (en) * | 2022-05-10 | 2023-08-18 | 王嘉豪 | Nitrogen heater pressure regulating device |
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