CN205781164U - Highly sensitive self balance valve core assembly - Google Patents
Highly sensitive self balance valve core assembly Download PDFInfo
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- CN205781164U CN205781164U CN201620686113.6U CN201620686113U CN205781164U CN 205781164 U CN205781164 U CN 205781164U CN 201620686113 U CN201620686113 U CN 201620686113U CN 205781164 U CN205781164 U CN 205781164U
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- valve rod
- pressure head
- leather bag
- inner core
- pressure
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Abstract
The utility model discloses a kind of highly sensitive self balance valve core assembly, including urceolus, removable in urceolus it is provided with inner core, leather bag, the middle part of inner core is equipped with valve rod, valve rod and pressure head form dismountable T-shaped spool, valve rod has the bar segment stretching out inner core upper end, and this far-end stretching out bar segment is screwed with baffle ring, is provided with compression spring between this baffle ring and inner core；Leather bag is sleeved on valve rod, is close on the inner face of pressure head outside leather bag；Inner core is by inside leather bag and valve rod is formed with the annular closed cavity with ft connection, pressure head periphery and being tightly connected that urceolus formation is slidably matched；Annular closed cavity is vertically in uiform section structure；Valve rod is abutted with the bottom surface of annular closed cavity by the shaft shoulder.The beneficial effects of the utility model are, pressure regulation starts sensitive, and the pressure equalization process time is short, and regulation precision is high, and compact conformation.Can be separately as voltage regulation part for installing space constrained environment, it is possible to existing pressure regulator with the use of.
Description
Technical field
This utility model patent relates to a kind of pressure regulating valve, a kind of highly sensitive self balance valve core assembly.
Background technology
Pressure regulator is the adjustment mechanism for valve of a kind of regulated fluid pressure, and pressure regulator generally uses valve port flow area big
Little adjustment controls fluid flow, it is achieved the purpose that pressure adjusts.It is to change that existing pressure regulator changes the mode of flow area size
Becoming spool to realize to the distance between valve port, the spool of existing pressure regulator is moved by pressure regulating device driving spool and realizes distance and change
Become.The pressure regulation drive mechanism of this pressure regulator generally uses self-balance structure, by spring and the diaphragm that driven by pressure medium
Realizing self-balancing, as the pressure increases, diaphragm overcomes spring pressure to make spool move to the direction near valve port；When pressure reduces
Time, spring overcoming diaphragm resistance, make spool move away from valve port direction, be so repeated several times and reach the purpose that pressure adjusts.Go out
In the purpose of raising regulation precision, the spool design of execution component is the structure with self-balancing by those skilled in the art,
To reach to put forward high-precision purpose by Secondary Control.Building pressure regulation as disclosed in China Patent Publication No. CN201149112Y
Device gas balance stabilizing valve core.This spool by leather bag, spring promote spool change by the way of moving valve core head and valve port away from
From, and utilizing in the middle part of valve core head the pressure reduction of pressure after close to pressure before pressure regulation and pressure head edge part close to pressure regulation, it is achieved secondary is put down
The pressure regulation purpose of weighing apparatus, owing to this pressure reduction increases along with the increase of valve port inlet pressure, therefore when inlet pressure changes, balanced valve
Core is correspondingly formed pressure controlled equilibrium process.But the leather bag of this spool is promoted mobile by the pressed gas in annular chamber
And being formed secondary self-balance structure by spring reset, toroidal cavity therein is ledge structure, leather bag promoting spool to move
Startup stage bearing area less than start the back balance stage bearing area.Bullet is overcome by less loaded area pressurized at leather bag
Spring elastic force and making is sent out after a core moves, and at once enters the state that loaded area increases, and spool mobile range significantly increases, and easily makes
Becoming pressure regulation excessive, the direction then being overcome leather bag thrust to promote spool to raise towards pressure after pressure regulation by spring power is moved, and
Leather bag is made to return to the state that bearing area is little.Pressure after pressure regulation raises, and is again introduced into the pressure regulation process that pressure reduces, the most instead
Can be only achieved secondary balancing state the most afterwards again.Therefore, less than the bearing area of normal pressure regulation state during startup, two are necessarily caused
Secondary balance valve core starts pressure change insensitive, and pressure balanced spool moves back and forth often, and the secondary balancing time is long,
Regulation precision is difficult to meet design requirement.For this reason, it may be necessary to improve further.
Summary of the invention
The purpose of this utility model is aiming at the deficiencies in the prior art, it is provided that a kind of highly sensitive self-balancing spool group
Part, its pressure regulation starts sensitive, and the pressure equalization process time is short, and regulation precision is high, and compact conformation.Can be separately as voltage regulation part
For installing space constrained environment, it is possible to existing pressure regulator with the use of.
For achieving the above object, this utility model adopts the following technical scheme that.
A kind of highly sensitive self balance valve core assembly, including urceolus, removable in urceolus is provided with inner core, inner core lower surface
And being compressed by leather bag edge between the interior step of urceolus bottom and be equiped with leather bag, the middle part of inner core is equipped with valve rod, valve rod with
Pressure head forms dismountable T-shaped spool, and valve rod has the bar segment stretching out described inner core upper end, and this far-end stretching out bar segment screws togather
There is baffle ring, between this baffle ring and the end face in opposite directions of inner core, be provided with the compression spring for forming balance with described leather bag；Described
Leather bag is sleeved on valve rod by the installing hole being provided with in the middle part of it, is close on the inner face of pressure head outside leather bag；Described inner core leads to
Crossing inside leather bag and valve rod is formed with annular closed cavity, this annular closed cavity is by running through the mesopore of T-shaped spool lower end
With being tightly connected that ft connection, pressure head periphery and the formation of described urceolus are slidably matched；Annular closed cavity cuts in waiting vertically
Face structure；Described valve rod is abutted with the bottom surface of annular closed cavity by the shaft shoulder.
Using this utility model of preceding solution, urceolus is as installing fixing basic component, pressure regulation actuator
Spool, leather bag, annular closed cavity and compression spring be both formed in outer barrel, wherein, spool structure in T shape, send out core
The self-balancing of axial location is formed by compression spring and leather bag.Its compact conformation, pressure regulation is reliable.During use, spool is used for adjusting
The lower end work surface of pressure is located at above pressure regulation valve port, is realized Jie flowed out by valve port by the distance between change and valve port upper surface
Mass flow amount, reaches the purpose that pressure adjusts.The width raised when valve port pressure medium and cause pressure head center and outer main pressure differential to increase
When degree is more than setting value, the medium close to inlet pressure enters toroidal cavity by mesopore, and medium utilizes pressure differential to pass through skin
Capsule promotes spool to overcome compression spring elastic force, makes spool move down near pressure regulation valve port, reduces the medium stream flowing into pressure regulation environment
Amount, reduces the pressure difference in the middle part of pressure head and between periphery；When the pressure difference of the two is less than setting value, spool is made in compression spring
Overcome leather bag elastic force under with, make to move on spool away from pressure regulation valve port, increase the rate-of flow flowing into pressure regulation environment, increase pressure head
Pressure difference between middle part and periphery, when this pressure reduction reaches setting value, spool is in the position of poised state, Jie after pressure regulation
Matter pressure keeps constant.Adjust its position by rotating baffle ring, change compression spring pretightning force, it is achieved setting of pressure adjusted value
Fixed.Owing to toroidal cavity is axial uiform section structure, therefore, it is sensitive that spool moves startup, spool move in the middle part of rear pressure head and
The change of the pressure difference between periphery is steady, and the cycle-index moved back and forth is few, and the equilibrium process time is short, and regulation precision is high.This
Highly sensitive self balance valve core assembly can individually be located at pressure regulation valve port, uses as pressure regulating part, it is possible to existing tune
Depressor coordinates the spool as existing pressure regulator to use, and makes existing pressure regulator have Double regulating pressure function, increases pressure regulation stroke, contracting
The minor pressure time, improve regulation precision.
Preferably, described inner core is the most movably installed in urceolus, and inner core is by the hollow form pressure being screwed on urceolus
Tight plug screw is fixed, and the hollow part compressing plug screw constitutes described baffle ring and the installing space of compression spring.So that baffle ring and compression
Spring forms internals, further cramped construction, adapts to the limited place of installing space.
Preferably, described inner core is formed it is set with the bulge loop of described compression spring.Improve the firm of compression spring installation
Property and the stability of work process, improve pressure regulation agility and predictable.
Preferably, described urceolus upper end is formed with mounting flange dish.Fix to be supported by ring flange to carry out installing, carry
The high stability installed.
Preferably, described pressure head is sleeved on described valve rod, and pressure head coordinates face to be sealed by O with the suit of valve rod；
Described pressure head is T-shaped, and pressure head is adjacent to described leather bag by the small end end face of T-shaped, and the outside of leather bag is provided with end cap, and this end cap abuts
On the shaft shoulder of described location, end cap has the flange of the T-shaped small end peripheral part being fastened on pressure head, so that described leather bag is to pressure head
T-shaped small end periphery forms parcel；Pressure head is become axially location with end cap by the locating shaft shoulder on valve rod by leather bag, and passes through spiral shell
The end cap being combined in valve rod compresses, and this end cap is positioned at the installation counterbore that pressure head is provided with；Described mesopore includes the pressure head being interconnected
Through hole and stem through-hole, pressure head through hole axially penetrates through pressure head, and stem through-hole is made up of the axial direction part being interconnected and radial section, axle
Being located on valve rod to section, and connect with pressure head through hole in valve rod lower end, radial section is located on the shaft shoulder of location, radial section and described ring
Shape closed cavity connects.The reliable demountable structure so that pressure head and valve rod form a fixed connection, reduces manufacture difficulty, and in pressure
Head is internally formed the passage connected with annular closed cavity, further ensures that compact conformation, improves the adaptability of installing space.Separately
Outward, the medium channel path that mesopore is constituted is short, easy to process, reduces manufacture difficulty and manufacturing cost.Further, end cap can improve skin
Capsule and the bonding strength of valve rod, and by end cap, leather bag is formed protection, eliminate in leather bag motor process and damaged by inner sleeve, prolongation
Leather bag service life；Certainly, end cap also contributes to the sealing that leather bag is connected with valve rod.
The beneficial effects of the utility model are, pressure regulation starts sensitive, and the pressure equalization process time is short, and regulation precision is high, and
Compact conformation.Can be separately as voltage regulation part for installing space constrained environment, it is possible to existing pressure regulator with the use of.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is further described, but the most therefore this utility model is limited in institute
Among the scope of embodiments stated.
Seeing Fig. 1, a kind of highly sensitive self balance valve core assembly, including urceolus 1, urceolus 1 upper end is formed with installation and uses
Ring flange 1a；Removable in urceolus 1 being provided with inner core 2, inner core 2 is the most movably installed in urceolus 1, and inner core 2 is by being screwed on
Hollow form on urceolus 1 compresses plug screw 8 and fixes, and compression plug screw 8 outer end is formed and turns driving hole 8a, and inner core 2 lower surface is with outer
Being compressed by leather bag 3 edge between the interior step of cylinder 1 bottom and be equiped with leather bag 3, the middle part of inner core 2 is equipped with valve rod 4, valve rod 4
Forming dismountable T-shaped spool with pressure head 5, valve rod 4 is provided with sealing ring 13 with coordinating of inner core 2 between the face of cylinder；Valve rod 4 has
Stretching out the bar segment of described inner core 2 upper end, this far-end stretching out bar segment is screwed with baffle ring 6, at the end in opposite directions of this baffle ring 6 with inner core 2
Being provided with the compression spring 7 for forming balance with described leather bag 3 between face, this compression spring 7 is set with on inner core 2 bulge loop formed
On 2a, baffle ring 6 outer end is formed with regulation driving hole 6a；Described leather bag 3 is sleeved on valve rod 4 by the installing hole being provided with in the middle part of it,
It is close to outside leather bag 3 on the inner face of pressure head 5；Described inner core 2 is empty by being formed with annular closed inside leather bag 3 with valve rod 4
Chamber, this annular closed cavity by running through mesopore and the ft connection of T-shaped spool lower end, pressure head 5 periphery and described urceolus 1 it
Between by sealing ring 5a formed be slidably matched be tightly connected, pressure head 5 lower surface is provided with sealing gasket 12；Annular closed cavity edge
Axially in uiform section structure；Valve rod 4 is abutted with the bottom surface of annular closed cavity by shaft shoulder 4a.Wherein, described compression plug screw 8
Hollow part constitutes described baffle ring 6 and the installing space of compression spring 7.
Wherein, pressure head 5 is sleeved on described valve rod 4, and pressure head 5 coordinates face to be sealed by O 9 with the suit of valve rod 4；Institute
Stating pressure head 5 T-shaped, pressure head 5 is adjacent to described leather bag 3 by the small end end face of T-shaped, and the outside of leather bag 3 is provided with end cap 11, this end cap
11 are connected on described location shaft shoulder 4a, and end cap 11 has the flange of the T-shaped small end peripheral part being fastened on pressure head 5, so that described
Leather bag 3 forms parcel to the T-shaped small end periphery of pressure head 5；Pressure head 5 passes through leather bag 3 and end cap 11 by the location shaft shoulder 4a on valve rod 4
Forming axially location, and compress by being screwed on the end cap 10 of valve rod 4, end cap 10 outer end is formed with inner hexagon spanner hole 10a, should
End cap 10 is positioned at the installation counterbore that pressure head 5 is provided with.Wherein, mesopore includes pressure head through hole and the stem through-hole being interconnected, pressure
Head through hole axially penetrates through pressure head 5, and stem through-hole is made up of the axial direction part being interconnected and radial section, and axial direction part is located on valve rod 4,
And connect with pressure head through hole in valve rod 4 lower end, radial section is located on the shaft shoulder 4a of location, and radial section is with described annular closed cavity even
Logical.
Preferred embodiment of the present utility model described in detail above.Should be appreciated that the ordinary skill people of this area
Member just can make many modifications and variations according to design of the present utility model without creative work.Therefore, all technology neck
In territory, technical staff passes through logical analysis, reasoning or limited reality on the basis of existing technology according to design of the present utility model
Test available technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (5)
1. a highly sensitive self balance valve core assembly, including urceolus (1), in urceolus (1), the removable inner core (2) that is provided with, interior
Compressed by leather bag (3) edge between cylinder (2) lower surface and the interior step of urceolus (1) bottom and be equiped with leather bag (3), inner core (2)
Middle part be equipped with valve rod (4), valve rod (4) and pressure head (5) form dismountable T-shaped spool, valve rod (4) have stretch out described
The bar segment of inner core (2) upper end, this far-end stretching out bar segment is screwed with baffle ring (6), at the end in opposite directions of this baffle ring (6) Yu inner core (2)
The compression spring (7) for forming balance with described leather bag (3) it is provided with between face；Described leather bag (3) is by the peace being provided with in the middle part of it
Dress borehole jack is contained on valve rod (4), and leather bag (3) outside is close on the inner face of pressure head (5)；Described inner core (2) passes through leather bag (3)
Inner side and valve rod (4) are formed with annular closed cavity, and this annular closed cavity is by running through the mesopore of T-shaped spool lower end with outer
Portion connects, and what pressure head (5) periphery and described urceolus (1) formation were slidably matched is tightly connected；It is characterized in that, described annular closed
Cavity is vertically in uiform section structure；Described valve rod (4) is abutted with the bottom surface of annular closed cavity by the shaft shoulder (4a).
Highly sensitive self balance valve core assembly the most according to claim 1, it is characterised in that described inner core (2) only may be used
Being installed in urceolus (1) of movement, inner core (2) compresses plug screw (8) by the hollow form being screwed on urceolus (1) and fixes, and compresses
The hollow part of plug screw (8) constitutes described baffle ring (6) and the installing space of compression spring (7).
Highly sensitive self balance valve core assembly the most according to claim 1, it is characterised in that the upper shape of described inner core (2)
Become and have the bulge loop (2a) being set with described compression spring (7).
Highly sensitive self balance valve core assembly the most according to claim 1, it is characterised in that described urceolus (1) upper end
It is formed with mounting flange dish (1a).
5. according to the highly sensitive self balance valve core assembly described in any one in Claims 1 to 4, it is characterised in that institute
Stating pressure head (5) to be sleeved on described valve rod (4), pressure head (5) coordinates face to be sealed by O (9) with the suit of valve rod (4)；Institute
Stating pressure head (5) T-shaped, pressure head (5) is adjacent to described leather bag (3) by the small end end face of T-shaped, and the outside of leather bag (3) is provided with end cap
(11), this end cap (11) is connected on the described location shaft shoulder (4a), and end cap (11) has outside the T-shaped small end being fastened on pressure head (5)
The flange of perimembranous, so that described leather bag (3) forms parcel to the T-shaped small end periphery of pressure head (5)；Pressure head (5) by leather bag (3) and
End cap (11) is formed axially location by the location shaft shoulder (4a) on valve rod (4), and presses by being screwed on the end cap (10) of valve rod (4)
Tightly, this end cap (10) is positioned at the installation counterbore that pressure head (5) is provided with；Described mesopore includes pressure head through hole and the valve rod being interconnected
Through hole, pressure head through hole axially penetrates through pressure head (5), and stem through-hole is made up of the axial direction part being interconnected and radial section, and axial direction part sets
On valve rod (4), and connecting with pressure head through hole in valve rod (4) lower end, radial section is located on the location shaft shoulder (4a), radial section and institute
State the connection of annular closed cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620686113.6U CN205781164U (en) | 2016-06-30 | 2016-06-30 | Highly sensitive self balance valve core assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620686113.6U CN205781164U (en) | 2016-06-30 | 2016-06-30 | Highly sensitive self balance valve core assembly |
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| Publication Number | Publication Date |
|---|---|
| CN205781164U true CN205781164U (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620686113.6U Active CN205781164U (en) | 2016-06-30 | 2016-06-30 | Highly sensitive self balance valve core assembly |
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| CN (1) | CN205781164U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111954774A (en) * | 2018-05-08 | 2020-11-17 | 因特鸥星股份有限公司 | Opening and closing valve for high pressure gas |
| CN115741209A (en) * | 2022-11-21 | 2023-03-07 | 绍兴格洛博动力总成有限公司 | Machine tool gravity balancing device and vertical stable machine tool |
-
2016
- 2016-06-30 CN CN201620686113.6U patent/CN205781164U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111954774A (en) * | 2018-05-08 | 2020-11-17 | 因特鸥星股份有限公司 | Opening and closing valve for high pressure gas |
| CN111954774B (en) * | 2018-05-08 | 2022-08-02 | 因特鸥星股份有限公司 | Opening and closing valve for high pressure gas |
| CN115741209A (en) * | 2022-11-21 | 2023-03-07 | 绍兴格洛博动力总成有限公司 | Machine tool gravity balancing device and vertical stable machine tool |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |