CN106122525A - A kind of inflation valve seat that can be used for online calibration - Google Patents
A kind of inflation valve seat that can be used for online calibration Download PDFInfo
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- CN106122525A CN106122525A CN201610488219.XA CN201610488219A CN106122525A CN 106122525 A CN106122525 A CN 106122525A CN 201610488219 A CN201610488219 A CN 201610488219A CN 106122525 A CN106122525 A CN 106122525A
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- Prior art keywords
- wing passage
- passage
- push rod
- spool
- core assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
- Lift Valve (AREA)
Abstract
nullA kind of inflation valve seat that can be used for online calibration，The main channel of connection it is formed with in valve body、Upper channel and wing passage，Main channel is in communication with the outside by wing passage and upper channel，A primary sealing area is had on the inwall of main channel，Main channel is separated into prepass and rear passage by primary sealing area，Wing passage and upper channel communicate with prepass，A secondary sealing area is had on wing passage inwall，Core assembly includes the first core assembly and the second core assembly，First core assembly includes the first spool and elastic component，First spool is arranged in rear passage along axis by this elastic component，First spool is close on primary sealing area under the effect of this elastic component，Second core assembly includes the second spool and elastic component，Second spool is arranged in wing passage along axis by this elastic component，Second spool is close on secondary sealing area under the effect of this elastic component，Prepass is sealed and installed with the push rod for controlling the first spool position.The inflation valve seat utilizing the present invention can calibration online.
Description
Technical field
The present invention relates to one and can be used for SF6The online calibration inflation valve seat of air insulation electric power apparatus.
Background technology
At present, the widely used SF of high-voltage power system6Gas-break switch (Gas Circuit Breaker abridge GCB)
Or SF6Gas-insulating and fully-enclosed combined electrical apparatus (Gas Insulated meta-enclosed Switchgear is abbreviated as GIS)
As control and the protection equipment of power system, they are the SF of costliness with excellent performance6Gas is as insulation and arc-extinguishing medium.
GCB or GIS is generally by multiple pressure air chamber (pole-interpolar of GCB；Between the electrical equipment-electrical equipment of GIS) constitute, monitor table
It is counted as the requisite device of pressure system, it is necessary to remove every year and carry out routine inspection and mensuration, due to frequently dismounting, holds
Fragile monitoring table meter, has been greatly reduced work efficiency.
Summary of the invention
The technical problem to be solved, it is simply that provide a kind of valve seat that can be used for online calibration, uses the present invention
Valve seat connects power equipment pressure air chamber and monitoring table meter, in the case of may be implemented in without dismantling monitoring table meter, and just can be to prison
Control table meter checks and measures, and is conducive to improving the efficiency of calibration, also reduces the probability damaging monitoring table meter.
The present invention solves its technical problem by following technical solution: a kind of inflation valve seat that can be used for online calibration, bag
Including valve body and core assembly, described valve body constitutes a threeway, and described core assembly is arranged in described valve body, by its position
Control described valve body each logical between connected relation；
It is characterized in that, be provided with straight line in described valve body and run through the main channel of described valve body front and rear end, be additionally provided with upper channel and
Wing passage, described main channel is in communication with the outside by described wing passage and upper channel, around its axis on the inwall of described main channel
Line is formed with an annular primary sealing area, and described main channel is divided into forward and backward two sections by described primary sealing area, is called
Prepass and rear passage, described wing passage and upper channel communicate with described prepass, around its axis on described wing passage inwall
Line is formed with an annular secondary sealing area, described rear, upper, the threeway of the wing passage described valve body of composition, described core assembly
Including the first core assembly and the second core assembly, described first core assembly is installed in the rear in passage, including the first valve
Core and elastic component, described first spool installed in the rear in passage along axis by this elastic component, and described first spool is at this
Being close under the effect of elastic component on described primary sealing area, close this passage, described second core assembly is arranged on described side
In passage, including the second spool and elastic component, described second spool is arranged in described wing passage along axis by this elastic component,
Described second spool is close on described secondary sealing area under the effect of this elastic component, closes this passage, in described prepass
Being sealed and installed with push rod, described first spool is stretched in the rear end of described push rod, and described push rod has on the axis of described main channel
There are primary importance and the second position, when described push rod is moved to institute by described primary importance backward along the axis of described main channel
When stating the second position, the rear end of push rod heads on described first spool away from described primary sealing area, opens described rear passage, in order to
Described rear passage can connect with described upper channel and/or wing passage.
Making power equipment pressure air chamber be connected with described rear passage, monitoring table meter is connected with described upper channel, and wing passage closes
Closing, when rear passage is opened, monitoring table meter normally works, when monitoring table meter is checked, measures by needs, by tester and
Wing passage is connected, and controls wing passage unlatching, regulates push rod, makes rear pathway closure, monitoring table meter can be carried out online calibration.
As the preferred embodiment of the present invention:
Described rear channel internal diameter is more than described prepass, and described primary sealing area is the transition face between described forward and backward passage, institute
Stating push rod rear portion external diameter anterior less than it, described push rod front portion external diameter is adaptive with described prepass, the rear portion of described push rod and institute
Stating the gap forming annular between the inwall of prepass, described upper, wing passage all directly communicates with described gap.This structure is not
But make push rod to move the most in the axial direction, and make between the threeway of valve body, connect more unobstructed.
Described upper, wing passage and same section of regional connectivity on described prepass axis.
Described push rod front portion is set with for coordinating the push rod sealing ring realizing sealing, described top with described prepass inwall
Bar front end passes described valve body, is set with front end gland, and described front end gland is by being threadably mounted at the front end of described valve body, suitable
Rotate described front end gland counterclockwise, drive described push rod to switch between described primary importance and the second position.
Described push rod front end is provided with first shaft shoulder, and the front end face of described valve body is provided with front sealing around described main channel
Groove, is provided with front sealing ring in described front seal groove, when described push rod is positioned at the described second position, first shaft shoulder thereon is tight
It is fitted on described front sealing ring, to realize better seal.
Described front end gland is tubular, inside has a cylindrical cavity, and cavity wall is provided with female thread, at the bottom of the chamber of front end in the middle part of
Having a perforate, formed at the bottom of ring chamber, described push rod front end passes the perforate in the middle part of at the bottom of described chamber exposes, the of described push rod
One shaft shoulder is buckled in the inner side at the bottom of the gland annular chamber of described front end.
Described push rod front end outer wall is provided with back-up ring around its axis also dismountable, and described back-up ring is positioned at described front side pressure
Lid front, external diameter is more than the internal diameter of perforate in the middle part of at the bottom of gland chamber, described front end, in order to carry out spacing, before making to described front end gland
Side pressure lid forms an overall structure with push rod.
The elastic component of described first core assembly is the first spring, and the first spool is ball valve, the rear end of described first spring
Supporting on the inwall of passage in the rear, front end is connected with described ball valve, and described first spring is in compressive state, described
Under the effect of one spring, described ball valve is closely affixed with described primary sealing area, closes described rear passage.
The elastic component of described second core assembly is the second spring, and the second spool includes valve rod and seal washer, described close
Seal washer is sleeved on described valve rod, described second spring supporting on the inwall of described wing passage, outer end and described valve rod phase
Even, described second spring is in compressive state, and under the effect of described second spring, the seal washer on described valve rod is close to
On described secondary sealing area, close described wing passage.
Described valve rod is the inner closing, the tubulose of outer end opening, and described valve rod the inner is provided with second shaft shoulder, described sealing gasket
Enclosing the lateral surface with described second shaft shoulder to be affixed, the outer end of described second spring is connected with the medial surface of described second shaft shoulder, bag
The termination of valve rod described in network, in order to fixed axis, described wing passage is divided into inside and outside two sections by described secondary sealing area, outer section of internal diameter
Less than inner segment, described valve rod outer end is stretched in the outer section of described wing passage, and the outer section internal diameter of described wing passage is adaptive with described valve rod,
The tube wall of described valve rod is provided with gas port, and described gas port is positioned at the outside of described seal washer near described seal washer,
When described wing passage is opened, described gas port enters the inner segment of described wing passage.The design of this structure also allows for the second valve
The unobstructed degree of connection between stability and inside and outside section of the wing passage of core motion.
Described valve rod outer end passes described wing passage one segment distance, when described valve rod returns in described wing passage, institute
State gas port and enter the inner segment of described wing passage.
Described wing passage is separated into two dismountables on axis and seals the parts of docking, and described second core assembly is installed
At the parts being positioned at outside.
The outer wall of described wing passage outer end is provided with external screw thread.
It is provided with side seal groove around described wing passage on described wing passage outer face, in described side seal groove, is provided with side seal
Circle.
Described inflation valve seat also includes protection cap, forms the cavity of a described wing passage outer end of parcel in described protection cap,
Be formed on this cavity inner wall and female thread that on described wing passage outer wall, external screw thread is adaptive, in the middle part of described protection cap end face outside
Convex, thus inside protection cap, form deeper cavity, when described protection cap is arranged on described wing passage outer end, described protection cap
End face fit tightly with described side seal circle, the valve rod stretching out described wing passage is contained in described protection cap end face evagination position
Inner chamber in.
Described inflation valve seat also includes cylinder of transferring, described switching cylinder both ends open, one end inwall is formed and described side
The female thread that on channel outer wall, external screw thread is adaptive, is also formed with radially inwardly projecting, in order to narrow its barrel chamber inside switching cylinder
Ring surface, when described switching cylinder is arranged on described wing passage outer end, described ring surface fits tightly with described side seal circle, and institute
The termination stating valve rod is against on described ring surface, and under the effect of described ring surface, valve rod is return inside described wing passage.
Relative to prior art, there is advantages that utilizing the inflation valve seat of the present invention to connect electric power sets
After standby pressure air chamber, monitoring table meter and tester, in the case of may be implemented in without dismantling monitoring table meter, monitoring table meter is entered
Row On line inspection and mensuration, be conducive to improving the efficiency of calibration, also reduce the probability damaging monitoring table meter；It addition, the present invention
It is reliable that inflation valve seat also has sealing, and no matter pressure air chamber is in the equal effect that can realize reliably sealing of inflated condition or vacuum state
Really；And, the present invention also has simple in construction, easy for installation, the feature of low cost.
Accompanying drawing explanation
Fig. 1 is the internal structure schematic diagram of the inflation valve seat of the specific embodiment of the invention；
Fig. 2 is the structural representation of the valve body of the specific embodiment of the invention；
Fig. 3 is the structural representation of the first core assembly of the specific embodiment of the invention；
Fig. 4 is the structural representation of the second core assembly of the specific embodiment of the invention；
Fig. 5 is the structural representation of the valve rod of the specific embodiment of the invention；
Fig. 6 is the structural representation of the push rod component of the specific embodiment of the invention；
Fig. 7 is the structural representation of the push rod of the specific embodiment of the invention；
Fig. 8 is that (now, rear passage is in opening to inflation valve seat structural representation when loading onto protection cap, and wing passage is in
Closed mode)；
Fig. 9 be inflation valve seat load onto switching cylinder time structural representation (now, rear passage is closed, and wing passage is in
Opening)；
Figure 10 be inflation valve seat load onto switching cylinder time structural representation (now, rear passage is in opening, and wing passage is in
Opening)；
In figure: 1-valve body, 2-the first core assembly, 3-the second core assembly, 4-push rod component, 8-transfers cylinder, 10-main channel,
11-wing passage, 12-upper channel, 13-front end face, 14-rear end face, seal groove before 15-, seal groove after 16-, sealing ring before 17-,
Sealing ring after 18-, 19-primary sealing area, 81-ring surface, 82-end cap, 101-prepass, passage after 102-, 103-the first ring
Connected in star, 20-the first back-up ring, 21-the first spring, 22-ball valve, 31-side seal circle, 33-the second back-up ring, 34-the second spring,
35-valve rod, 36-seal washer, 381-side seal groove, 303-secondary sealing area, 304-the second annular groove, 351-the second axle
Shoulder, 352-boss, 353-gas port, 40-push rod, 41-push rod sealing ring, 42-drive end bearing bracket, 43-third gear circle, 401-the 3rd ring
Connected in star, 402-fourth annular groove, 403-first shaft shoulder.
Detailed description of the invention
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
The inflation valve seat of the present embodiment, including valve body the 1, first core assembly the 2, second core assembly 3 and push rod component
4, as shown in Figure 1.
As in figure 2 it is shown, be provided with the main channel 10 running through valve body 1 front and rear end 13,14 along valve body 1 axis, before valve body 1,
Rear end face 13,14 is respectively equipped with forward and backward seal groove 15,16 around main channel 10, before forward and backward sealing ring 17,18 is separately positioned on,
In rear seal groove 15,16.External screw thread also it is designed with on the outer wall of prepass 101 end.
Be formed with an annular primary sealing area 19 on the inwall of main channel 10 around its axis, main channel 10 is by first
Sealing surface 19 is divided into forward and backward two sections, is called prepass 101 and rear passage 102.Rear passage 102 internal diameter is more than prepass
101, primary sealing area 19 is the transition face of the radial direction between forward and backward passage 101,102.Main channel 10 inwall is near valve body 1
Rear end face 14 is circumferentially arranged with first annular groove 103.
Being additionally provided with upper channel 12 and wing passage 11 in valve body 1, the prepass of main channel 10 101 is by wing passage 11 and upper logical
Road 12 is in communication with the outside.Upper, wing passage 12,11 and same section of regional connectivity on prepass 101 axis, and triple channel axis two
Two is vertical.Be formed with an annular secondary sealing area 303 on wing passage 11 inwall around its axis, wing passage 11 is by second
Sealing surface 303 is divided into inside and outside two sections, and outer section of internal diameter is less than inner segment.It is additionally provided with the second annular around its axis on wing passage 11 inwall
Groove 304, the second annular groove 304 is positioned at the inner side of secondary sealing area 303.Wing passage 11 end face is additionally provided with side around its axis
Seal groove 381, is provided with side seal circle 31 in side seal groove 381.It is additionally provided with external screw thread on the outer wall of wing passage 11 end.
Above-mentioned rear passage 102, upper channel 12, wing passage 11 constitute the threeway of the present embodiment valve body 1.
First core assembly 2 is as it is shown on figure 3, be made up of first back-up ring the 20, first spring 21 and ball valve 22, and they are coaxial
Arranging, the two ends of the first spring 21 are connected with the first back-up ring 20 and ball valve 22 respectively.
Second core assembly 3 as shown in Figure 4, is made up of second spring the 34, second back-up ring 33 and the second spool, and they are coaxial
Arranging, the second spool is made up of valve rod 35 and seal washer 36.Second spring 34 is connected between the second back-up ring 33 and valve rod 35, close
Seal washer 36 is sleeved on valve rod 35.
As it is shown in figure 5, valve rod 35 is closed in one end, the tubulose of one end open, it is provided with the second axle near valve rod 35 blind end
Shoulder 351, the termination of this end is formed and is positioned at the boss 352 on second shaft shoulder 351, the tube wall of valve rod 35 is additionally provided with gas port 353,
Gas port 353 and boss 352 points are positioned at the both sides of second shaft shoulder 351.Gas port 353 by two groups of lines vertical to perforation structure
Become.
Seal washer 36 and gas port 353 are positioned at the same side of second shaft shoulder 351, seal washer 36 and second shaft shoulder 351
Being affixed setting, gas port 353 is near seal washer 36.Second spring 34 is connected with second shaft shoulder 351 of valve rod 35, envelope valve rod
The boss 352 of 35, in order to fixed axis.
As shown in Figure 6,7, push rod component 4 includes push rod 40, push rod sealing ring 41 and third gear circle 43 and drive end bearing bracket 42.
Push rod 40 may be generally divided into two parts, front and rear, and push rod 40 rear portion external diameter is anterior less than it, and the front portion of push rod 40 is enclosed
Being provided with fourth annular groove 402 around its axis, push rod sealing ring 41 is arranged in this groove, and the front portion of push rod 40 is closer to end
Head position is provided with first shaft shoulder 403, and the first shaft shoulder 403 front is provided with the 3rd annular groove 401, the 3rd ring around push rod 40 axis
Third gear circle 43 has been removed and installed in connected in star 401.
Front end gland 42, in tubular, inside has a cylindrical cavity, and cavity wall is provided with and external screw thread on the outer wall of valve body 1 front end
Adaptive female thread, at the bottom of chamber in the middle part of there is perforate, formed at the bottom of ring chamber.
Perforate in the middle part of at the bottom of side pressure lid 42 chamber in the past, push rod 40 front end passes and exposes, this perforate internal diameter and push rod 40 front end
External diameter is adaptive, and first shaft shoulder 403 of push rod 40 is buckled in the inner side at the bottom of front end gland 42 annular chamber, and third gear circle 43 is positioned at front side pressure
Covering 42 fronts, external diameter is more than the internal diameter of perforate in the middle part of at the bottom of front end gland 42 chamber, in order to carries out spacing to front end gland 42, makes front end
Gland 42 and push rod 40 form an overall structure.
As it is shown in figure 1, the assembly relation of each parts is as follows in the present embodiment:
First core assembly 2 is arranged in rear passage 102 along axis, and the first back-up ring 20 of the first core assembly 2 is logical after being arranged on
First annular groove 103 on road 102 inwall, the rear end of the first spring 21 is supported on rear passage 102 by the first back-up ring 20
On inwall, the first spring 21 is in compressive state, under the effect of the first spring 21, and ball valve 22 phase tight with primary sealing area 19
Patch, passage 102 after Guan Bi.
Push rod component 4 is arranged in prepass 101 along axis, and ball valve 22 is stretched in rear end, and front end exposes to prepass 101,
Its front end gland 42 by being threadably mounted at the front end of valve body 1, push rod 40 have on the axis of main channel 10 primary importance and
The second position, along pivot head gland 42 counterclockwise, will drive push rod 40 to switch between described primary importance and the second position, when
Push rod 40 along the axis of main channel 10 moved to the second position by primary importance backward time, the rear end of push rod 40 heads on ball valve 22
Away from primary sealing area 19, passage 102 after unlatching, in order to rear passage 102 can connect with upper channel 12 and/or wing passage 11.
The anterior external diameter of push rod 40 is adaptive with prepass 101, is formed between rear portion and the inwall of prepass 101 of push rod 40
The gap of annular, upper, wing passage 12,11 all directly communicates with described gap.On push rod 40, the push rod sealing ring 41 of suit seals
Gap between push rod 40 and prepass 101 inwall, first shaft shoulder 403 when push rod 40 is positioned at the second position, on push rod 40
It is fitted tightly on the front sealing ring 17 on valve body 1 front end face, in order to realize the second layer in addition to push rod sealing ring 41 and seal.
Second core assembly 3 is arranged in wing passage 11 along axis, and the second back-up ring 33 of the second core assembly 3 is arranged on side
In the second annular groove 304 on passage 11 inwall, the second spring 34 is inner is supported on wing passage 11 by the second back-up ring 33
On inwall, the second spring 34 is in compressive state, and under the action of the second spring 34, the seal washer 36 on valve rod 35 is close to
On secondary sealing area 303, closed side passage 11.The outer section internal diameter of wing passage 11 is adaptive with valve rod 35, and valve rod 35 outer end is stretched into side and led to
In the outer section in road 11, and pass a segment distance, in valve rod 35 returns to wing passage 11, when i.e. wing passage 11 is opened, valve rod 35
The inner segment of upper gas port 353 approaching side passage 11, makes the inside and outside section of gas port 353 by valve rod 35 and the inner chamber of wing passage 11
Preferably connection.
As shown in Figure 8, inflation valve seat also includes protection cap 7, forms the chamber of parcel wing passage 11 outer end in protection cap 7
Body, this cavity inner wall is formed and the female thread of external screw thread adaptation on wing passage 11 outer wall, evagination in the middle part of protection cap 7 end face,
Thus inside protection cap, form deeper cavity, and when protection cap 7 is arranged on wing passage 11 outer end, the end face of protection cap 7 and side
Sealing ring 31 fits tightly, and the valve rod 40 of protruding side passage 11 is contained in the inner chamber at protection cap 7 end face evagination position.Protection cap
The design of 7, can avoid wing passage 11 to be opened by mistake and open.
Such as Fig. 9, shown in 10, inflation valve seat also includes cylinder 8 of transferring, cylinder 8 both ends open of transferring, one end inwall is formed with
The female thread that on wing passage 11 outer wall, external screw thread is adaptive, switching cylinder 8 inside is also formed with radially inwardly projecting, in order to narrow its cylinder
The ring surface 81 in chamber, when switching cylinder 8 is arranged on wing passage 11 outer end, ring surface 81 fits tightly with side seal circle 31, and valve rod
The termination of 40 is against on ring surface 81, and under the effect of ring surface 81, valve rod 40 is return inside wing passage 11.The present embodiment transfer
Connect cylinder 8 to be made up of two parts, including an end cap 82 identical with drive end bearing bracket 42 structure, also include that an one end open is provided with
Point cylinder of flanging structure, this point of cylinder is buckled in the inner side of end cap, the described i.e. institute of ring surface 81 by the end face of its flanging structure
State point cylinder end face with flanging structure.
Making power equipment pressure air chamber be connected with described rear passage, monitoring table meter is connected with described upper channel, and wing passage closes
Closing, when rear passage is opened, monitoring table meter normally works.
When monitoring table meter is checked, measures by needs, tester is led to side by Fig. 9, switching cylinder in 10
Road connects, and now due to the switching cylinder effect to valve rod, wing passage is opened, and regulates push rod, makes rear pathway closure, can be to monitoring
Table meter carries out online calibration, as shown in Figure 9.
As inflation and gas need to be used to reclaim function, by aerating device or gas concentration unit by Fig. 9, switching in 10
Cylinder connects with wing passage, and now, wing passage is on, and regulates push rod, makes rear passage open, as shown in Figure 10, can realize
Inflation or gas reclaim function.
Claims (10)
1. can be used for an inflation valve seat for online calibration, including valve body and core assembly, described valve body constitutes a threeway, institute
State core assembly to be arranged in described valve body, the connected relation between leading to by valve body described in its position control is each；
It is characterized in that, be provided with straight line in described valve body and run through the main channel of described valve body front and rear end, be additionally provided with upper channel and
Wing passage, described main channel is in communication with the outside by described wing passage and upper channel, around its axis on the inwall of described main channel
Line is formed with an annular primary sealing area, and described main channel is divided into forward and backward two sections by described primary sealing area, is called
Prepass and rear passage, described wing passage and upper channel communicate with described prepass, around its axis on described wing passage inwall
Line is formed with an annular secondary sealing area, described rear, upper, the threeway of the wing passage described valve body of composition, described core assembly
Including the first core assembly and the second core assembly, described first core assembly is installed in the rear in passage, including the first valve
Core and elastic component, described first spool installed in the rear in passage along axis by this elastic component, and described first spool is at this
Being close under the effect of elastic component on described primary sealing area, close this passage, described second core assembly is arranged on described side
In passage, including the second spool and elastic component, described second spool is arranged in described wing passage along axis by this elastic component,
Described second spool is close on described secondary sealing area under the effect of this elastic component, closes this passage, in described prepass
Being sealed and installed with push rod, described first spool is stretched in the rear end of described push rod, and described push rod has on the axis of described main channel
There are primary importance and the second position, when described push rod is moved to institute by described primary importance backward along the axis of described main channel
When stating the second position, the rear end of push rod heads on described first spool away from described primary sealing area, opens described rear passage, in order to
Described rear passage can connect with described upper channel and/or wing passage.
Inflation valve seat the most according to claim 1, it is characterised in that described rear channel internal diameter is more than described prepass, institute
Stating primary sealing area is the transition face between described forward and backward passage, and described push rod rear portion external diameter is anterior less than it, before described push rod
Portion's external diameter is adaptive with described prepass, forms the gap of annular, institute between rear portion and the inwall of described prepass of described push rod
State, wing passage all directly communicates with described gap；
Described upper, wing passage and same section of regional connectivity on described prepass axis.
Inflation valve seat the most according to claim 2, it is characterised in that described push rod front portion is set with for leading to before described
Road inwall coordinates the push rod sealing ring realizing sealing, and described push rod front end passes described valve body, is set with front end gland, described before
Side pressure lid, by being threadably mounted at the front end of described valve body, along rotating described front end gland counterclockwise, drives described push rod in institute
State and switch between primary importance and the second position.
Inflation valve seat the most according to claim 3, it is characterised in that the elastic component of described first core assembly is the first bullet
Spring, the first spool is ball valve, and the rear end of described first spring supports on the inwall of passage in the rear, front end and described ball valve phase
Even, described first spring is in compressive state, and under the effect of described first spring, described ball valve is tight with described primary sealing area
Close it is affixed, closes described rear passage.
Inflation valve seat the most according to claim 4, it is characterised in that the elastic component of described second core assembly is the second bullet
Spring, the second spool includes that valve rod and seal washer, described seal washer are sleeved on described valve rod, and described second spring supporting exists
On the inwall of described wing passage, outer end is connected with described valve rod, and described second spring is in compressive state, at described second spring
Effect under, the seal washer on described valve rod is close on described secondary sealing area, closes described wing passage.
Inflation valve seat the most according to claim 5, it is characterised in that described valve rod is the inner closing, the pipe of outer end opening
Shape, described valve rod the inner is provided with second shaft shoulder, and described seal washer is affixed with the lateral surface of described second shaft shoulder, described second bullet
The outer end of spring is connected with the medial surface of described second shaft shoulder, the termination of valve rod described in envelope, in order to fixed axis, described wing passage
Being divided into inside and outside two sections by described secondary sealing area, outer section of internal diameter is less than inner segment, and described valve rod outer end is stretched into outside described wing passage
In section, the outer section internal diameter of described wing passage is adaptive with described valve rod, and the tube wall of described valve rod is provided with gas port, described gas port position
In the outside of described seal washer near described seal washer, when described wing passage is opened, described gas port enters described side and leads to
The inner segment in road.
Inflation valve seat the most according to claim 6, it is characterised in that described valve rod outer end pass described wing passage one section away from
From, when described valve rod returns in described wing passage, described gas port enters the inner segment of described wing passage.
Inflation valve seat the most according to claim 7, it is characterised in that described wing passage is separated into two dismountings on axis
Formula seals the parts of docking, and described second core assembly is mounted in the parts in outside.
Inflation valve seat the most according to claim 8, it is characterised in that the outer wall of described wing passage outer end is provided with outer spiral shell
Stricture of vagina；
It is provided with side seal groove around described wing passage on described wing passage outer face, in described side seal groove, is provided with side seal circle；
Described inflation valve seat also includes protection cap, forms the cavity of a described wing passage outer end of parcel, this chamber in described protection cap
It is formed on internal wall and the female thread of external screw thread adaptation on described wing passage outer wall, evagination in the middle part of described protection cap end face, from
And inside protection cap, form deeper cavity, and when described protection cap is arranged on described wing passage outer end, the top of described protection cap
Face fits tightly with described side seal circle, and the valve rod stretching out described wing passage is contained in the interior of described protection cap end face evagination position
In chamber.
Inflation valve seat the most according to claim 8, it is characterised in that the outer wall of described wing passage outer end is provided with outer spiral shell
Stricture of vagina；
It is provided with side seal groove around described wing passage on described wing passage outer face, in described side seal groove, is provided with side seal circle；
Described inflation valve seat also includes cylinder of transferring, described switching cylinder both ends open, one end inwall is formed and described wing passage
The female thread that on outer wall, external screw thread is adaptive, is also formed with radially inwardly projecting, in order to narrow the annular of its barrel chamber inside switching cylinder
Face, when described switching cylinder is arranged on described wing passage outer end, described ring surface fits tightly with described side seal circle, and described valve
The termination of bar is against on described ring surface, and under the effect of described ring surface, valve rod is return inside described wing passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610488219.XA CN106122525B (en) | 2016-06-24 | 2016-06-24 | A kind of inflation valve seat can be used for online calibration |
Applications Claiming Priority (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021208684A1 (en) * | 2020-04-13 | 2021-10-21 | 浙江晟祺实业有限公司 | Improved spray head structure |
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| CN205745446U (en) * | 2016-06-24 | 2016-11-30 | 广州白云电器设备股份有限公司 | A kind of inflation valve seat that can be used for online calibration |
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| US7237760B1 (en) * | 2006-01-28 | 2007-07-03 | Ching-Su Chiu | Check valve actuator |
| CN201236971Y (en) * | 2008-06-27 | 2009-05-13 | 宁波中迪机械有限公司 | Meter-correction combined valve |
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| WO2021208684A1 (en) * | 2020-04-13 | 2021-10-21 | 浙江晟祺实业有限公司 | Improved spray head structure |
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| CN106122525B (en) | 2019-02-01 |
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