CN104100734B - A kind of scavenging air valve - Google Patents
A kind of scavenging air valve Download PDFInfo
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- CN104100734B CN104100734B CN201410337037.3A CN201410337037A CN104100734B CN 104100734 B CN104100734 B CN 104100734B CN 201410337037 A CN201410337037 A CN 201410337037A CN 104100734 B CN104100734 B CN 104100734B
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- core housing
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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
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
- F16K11/0716—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides with fluid passages through the valve member
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
Abstract
nullThe present invention relates to a kind of scavenging air valve，Its valve body uuper valve chamber is tubular，The valve pocket two-port of valve body is stamped end cap respectively，Valve core housing that core assembly includes being fixed in valve pocket and through controlling the slide-bar of Component driver sliding，Slide-bar two ends are spacing through end cap，Valve core housing is provided with the middle passage connected with air inlet sealing along valve core housing axial distribution，The first passage connected with the first gas outlet seal，And the second passage connected with the second gas outlet seal，Slide-bar is provided with two seals circle along its axially spaced-apart，Slide-bar end count seal and valve core housing seal to join and are incorporated between two sealing rings interval and form the commutation chamber connected with middle passage all the time，Commutation chamber axial length is less than the spacing distance of the first passage and the second passage，And more than between the first passage and middle passage、Spacing distance between second passage and middle passage.The present invention has compact conformation, and volume is little, and process and assemble is convenient, reliable operation, the advantage of long service life.
Description
Technical field
The present invention relates to gas reversing arrangement technical field, be specifically related to a kind of scavenging air valve.
Background technology
Gas control valve is equipment conventional in gas pipeline, well known.Control to be generally adopted electromagnetic valve or mechanical valve to the break-make of gas pipeline at present.The core assembly design that existing electromagnetic valve and mechanical valve switch owing to controlling gas pipeline is unreasonable, cause that the volume of scavenging air valve is big, structure is not compact, the poor sensitivity of pipeline switching, process and assemble inconvenience, ventilation efficiency is low, and the sealing of core assembly and valve body is poor, it is easy to the defects such as damage.
Summary of the invention
For the deficiency that prior art exists, it is an object of the invention to provide a kind of core assembly reasonable in design, compact conformation, volume is little, and process and assemble is convenient, reliable operation, and the scavenging air valve of long service life.
nullFor achieving the above object，The technical scheme is that a kind of scavenging air valve，Include the valve body with valve pocket，It is assemblied in the core assembly in valve pocket，And control the control assembly of core assembly action，Described valve body is provided with the air inlet connected with valve pocket、First gas outlet、Second gas outlet，It is characterized in that: described valve body uuper valve chamber is tubular，The valve pocket two-port of valve body is covered with end cap respectively，Described core assembly includes valve core housing，And sliding coordinates the slide-bar in valve core housing，Control assembly to be connected with slide-bar driving，Slide-bar two ends are spacing through end cap，Described valve core housing is fixed in valve pocket，Valve core housing is provided with three groups of passages along valve core housing axial distribution，Three groups of passages respectively seal, with air inlet, the middle passage connected，The first passage connected with the first gas outlet seal，And the second passage connected with the second gas outlet seal，Described slide-bar is provided with two seals circle along its axially spaced-apart，Slide-bar end count seal seals with valve core housing and coordinates，And interval forms commutation chamber between two seals circle，Described middle passage connects with commutation chamber all the time，Described commutation chamber axial length is less than the spacing distance of described first passage and the second passage，And more than between described first passage and middle passage、Spacing distance between second passage and middle passage.
The scavenging air valve of the present invention, it controls the sliding in valve core housing of Component driver slide-bar, thus the commutation chamber controlled on slide-bar realizes switching between the first gas outlet and the second gas outlet, it is achieved the conducting switching of air inlet and the first gas outlet, the second gas outlet, thus realizing gas commutation；nullIt adopts slide-bar mode in axial sliding，Commutating on slide-bar, chamber is axially displaced realizes gas return path conducting switching，Compact conformation，Volume is little，And adopt valve core housing to coordinate for the slipper seal of slide-bar，Valve core housing can individually be processed，Process more convenient，On the one hand，Valve body uuper valve chamber requirement on machining accuracy reduces，The processing of valve body is more easy，On the other hand，Valve core housing is set specially for slide-bar assembling，Valve core housing can adopt degree of precision to process，It is effectively ensured slide-bar and coordinates reliability with the sealing of valve core housing，Ensure that slide-bar slides sensitive in valve core housing，And chamber of commutating has certain axial length，Commutation chamber connects with air inlet all the time，Commutation intracavity gassy all the time，The gas circuit formed between first gas outlet and air inlet，And second switching stroke between the gas circuit formed between venthole and air inlet short，Ensure that gas circuit efficiently switches.
The present invention is further arranged to: described slide-bar is provided with annular avoiding hollow groove, annular avoiding hollow groove and commutation chamber are along slide-bar axial distribution, annular avoiding hollow groove is bordered by with commutation one end, chamber, slide-bar is formed with pressure-releasing chamber in corresponding commutation chamber away from annular avoiding hollow groove one end position with valve core housing, pressure-releasing chamber end count seal and commutation chamber seal isolation, valve body is provided with pressure release passage between end cap and the valve body of corresponding pressure-releasing chamber one end, pressure release passage connection pressure-releasing chamber is with extraneous, described slide-bar is provided with the axially extending bore and radial direction through hole that connect pressure-releasing chamber and annular avoiding hollow groove, axially extending bore one end is the opening connected with pressure-releasing chamber, the axially extending bore other end connects with radial direction through hole, radial direction through hole is the port being positioned at annular avoiding hollow groove relative to the other end connecting one end with axially extending bore.
By adopting technique scheme, on slide-bar, avoiding hollow groove plays the effect of stepping down, and facilitates slide-bar to be assemblied in valve core housing；The more important thing is, avoiding hollow groove is bordered by with commutation chamber, slide-bar moves commutation, for ease of narration, the corresponding first passage position of order annular avoiding hollow groove, then commutation chamber moves to the second passage position from the first passage position, then annular avoiding hollow groove moves accordingly, the first passage connection corresponding with on valve core housing of annular avoiding hollow groove, i.e. annular avoiding hollow groove and the connection of the first gas outlet, the executor's internal gas pressure being so connected with the first gas outlet can pass through the first passage, avoiding hollow groove, radial direction through hole, axially extending bore, pressure-releasing chamber, pressure release passage exhaust pressure relief, thus it is highly sensitive to the control of executor to reach scavenging air valve；Same, the first passage position is moved to from the second passage position in commutation chamber, then annular avoiding hollow groove moves accordingly, annular avoiding hollow groove removes the first passage position, commutation chamber removes the second passage, pressure-releasing chamber and the second passage connect, and realize the executor's exhaust pressure relief being connected with the second gas outlet through pressure release passage, thus it is highly sensitive to the control of executor to reach scavenging air valve；There is scavenging air valve reliable operation, control highly sensitive advantage；And adopt the design of avoiding hollow groove, radial direction through hole, axially extending bore to realize the respective actuators exhaust pressure relief that the first passage connects, have reasonable in design, compact conformation, and the loss of weight to slide-bar can be realized, not only reduce material cost, and make lightening of slide-bar, move axially more sensitive so that reversal valve commutation action is more sensitive.
The present invention is further arranged to: described control assembly includes compression spring, the opening location of compression spring axially through hole is assemblied in axially extending bore, compression spring one end is pressed on bottom axially extending bore, the compression spring other end is pressed on end cap, and axial and axially extending bore the opening opposite side of described slide-bar is the drive end being connected to drive source.
By adopting technique scheme, controlling assembly adopts slide-bar one end to arrange compression spring realization reset, the slide-bar other end drives through drive source, control modular construction simple, and compress spring and be assemblied in axially extending bore, the overall axial length that slide-bar is formed with compression spring is short, compact assembling structure, and the axial length of compression spring is overlapping with the axial length of slide-bar, compression spring has longer axial length, one is to ensure that spring has enough deformation energy storage, and two ensure that compression spring-compressed moves reliably.
The present invention is further arranged to: on described valve body, the end cap of corresponding compression spring one end includes outer cover and end cap backing plate, end cap backing plate is fitted on valve body through outer cover, described end cap backing plate is provided with spring positioning seat towards pressure-releasing chamber side, compression spring positioning support is on spring positioning seat, described pressure release passage includes the disappointing through hole that end cap backing plate is provided with, and end cap backing plate is provided with some disappointing grooves leading to side edge towards outer cover side.
By adopting technique scheme, pressure release passage is formed on end cap backing plate, easy to process, and on end cap backing plate, spring positioning seat is processed to form conveniently, and compression spring location and installation is convenient.
The present invention is further arranged to: on described valve body, on corresponding slide-bar, the end cap of drive end is provided with ventilation nozzle, on described valve body, on corresponding slide-bar, the end cap of drive end coordinates with valve core housing end seal, and on valve body, on corresponding slide-bar, the end cap of drive end, valve core housing and slide-bar drive end form the driving air cavity connected with ventilation nozzle.
By adopting technique scheme, adopt air pressure control realization that the driving of slide-bar is controlled, corresponding simple in construction, and control reliably conveniently.
nullThe present invention is further arranged to: described valve core housing and valve pocket interval coordinate，Separate space between valve core housing and the formation of valve pocket interval，Valve core housing is located axially at middle passage both sides and is provided with and realizes the intermediate seal ring that valve core housing coordinates with valve pocket sealing，Intermediate seal ring is twice，And lay respectively between the first passage and middle passage、And between the second passage and middle passage，Described separate space is divided into the middle venting cavity axially closing isolation through twice intermediate seal ring，Described middle venting cavity connection air inlet and middle passage，Described valve core housing is provided with the first sealing ring axially adjacent to first passage one end，Described separate space is divided into the first venting cavity axially closing isolation through the first sealing ring and intermediate seal ring adjacent thereto，First venting cavity connects the first passage and the first gas outlet，Described valve core housing is provided with the second sealing ring axially adjacent to second passage one end，Described separate space is divided into the second venting cavity axially closing isolation through the second sealing ring and intermediate seal ring adjacent thereto，Second venting cavity connects the second passage and the second gas outlet.
By adopting technique scheme, valve core housing and valve pocket adopt interval to coordinate, and realize closing isolation respective cavities through twice intermediate seal ring, the first sealing ring and the second sealing ring, valve core housing is facilitated to be assemblied in valve pocket, and formed between valve core housing with valve pocket with corresponding three groups of passages and air inlet, the first gas outlet, the second corresponding connection in gas outlet separate space (centre venting cavity, the first venting cavity, the second venting cavity), facilitate three groups of passages and corresponding air inlet, the first gas outlet, the second gas outlet seal connection on valve core housing, and ventilation efficiency is high.
Below in conjunction with accompanying drawing, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is specific embodiment of the invention scavenging air valve structural representation；
Fig. 2 is specific embodiment of the invention scavenging air valve right view；
Fig. 3 is the Fig. 2 sectional view along A-A cutting line cutting；
Fig. 4 is specific embodiment of the invention scavenging air valve front view；
Fig. 5 is the Fig. 4 sectional view along B-B cutting line cutting；
Fig. 6 is specific embodiment of the invention core assembly assembling structural representation.
null1-valve body，10-air inlet，11-the first gas outlet，12-the second gas outlet，2-core assembly，21-valve core housing，Passage in the middle of 210-，211-the first passage，212-the second passage，22-slide-bar，221-axially extending bore，222-radial direction through hole，223-drive end，231、232-intermediate seal ring，233-the first sealing ring，234-the second sealing ring，24-sealing ring，25-commutates chamber，26-annular avoiding hollow groove，261-avoiding hollow groove sealing ring，27-pressure-releasing chamber，3-end cap，Separate space between 4-，Venting cavity in the middle of 40-，41-the first venting cavity，42-the second venting cavity，5-pressure release passage，51-loses heart through hole，52-loses heart groove，61-compresses spring，62-ventilation nozzle，63-drives air cavity
Detailed description of the invention
Referring to accompanying drawing 1 to accompanying drawing 6, a kind of scavenging air valve disclosed by the invention, include the valve body 1 with valve pocket, be assemblied in the core assembly 2 in valve pocket, and control the control assembly of core assembly 2 action.Described valve body 1 is provided with the 11, second gas outlet 12, air inlet the 10, first gas outlet connected with valve pocket；Described valve body 1 uuper valve chamber is tubular, and the valve pocket two-port of valve body 1 is covered with end cap 3 respectively.
Its improvement is: described core assembly 2 includes valve core housing 21, and sliding coordinates the slide-bar 22 in valve core housing 21, controlling assembly to be connected with slide-bar 22 driving, slide-bar 22 realizes axial slip in valve core housing 21 through controlling assembly, and slide-bar 22 two ends are spacing through end cap 3.
Described valve core housing 21 is fixed in valve pocket, valve core housing 21 is provided with three groups of passages along valve core housing 21 axial distribution, and three groups of passages respectively seal the middle passage 210 connected and seal the first passage 211 connected with the first gas outlet 11 and seal, with the second gas outlet 12, the second passage 212 connected with air inlet 10；In this specific embodiment, one group of passage is made up of a circle passage circumferentially disposed around valve core housing 21, for ease of passage and corresponding air inlet 10, first gas outlet 11, second gas outlet 12 seals connection, described valve core housing 21 and valve pocket interval coordinate, separate space 4 between valve core housing 21 and the formation of valve pocket interval, valve core housing 21 is located axially at middle passage 210 both sides and is provided with and realizes the intermediate seal ring 231 that valve core housing 21 coordinates with valve pocket sealing, 232, intermediate seal ring is twice, and lay respectively between the first passage 211 and middle passage 210, and between the second passage 212 and middle passage 210；Described separate space 4 is divided into the middle venting cavity 40 axially closing isolation through twice intermediate seal ring 231,232, and described middle venting cavity 40 connects air inlet 10 and middle passage 210.Described valve core housing 21 is provided with the first sealing ring 233 axially adjacent to first passage 211 one end, described separate space 4 is divided into the first venting cavity 41 axially closing isolation through the first sealing ring 233 and intermediate seal ring 231 adjacent thereto, and the first venting cavity 41 connects the first passage 211 and the first gas outlet 11.Described valve core housing 21 is provided with the second sealing ring 234 axially adjacent to second passage 212 one end, described separate space 4 is divided into the second venting cavity 42 axially closing isolation through the second sealing ring 234 and intermediate seal ring 232 adjacent thereto, and the second venting cavity 42 connects the second passage 212 and the second gas outlet 12.On such valve core housing 21, first sealing ring the 233, second sealing ring 234 in a separate space 4 of three groups of passages and the 11, second gas outlet 12, corresponding air inlet the 10, first gas outlet, twice intermediate seal ring 231,232 seal connection, there is connection easy to connect, and ventilation efficiency is high, facilitate the passage processing sets up on valve core housing, and valve core housing is assemblied in valve pocket.Certainly as the technical scheme that the present invention is feasible, valve core housing also can close-fitting in valve pocket, passage can be that single hole is arranged, valve core housing upper vent hole adopts nesting to be directly tightly connected with corresponding first gas outlet, the second gas outlet, air inlet, but the processing sets up that so there is valve core housing upper vent hole is constant, and the assembling of valve core housing is inconvenient, and first gas outlet corresponding with on valve body, the second gas outlet, air inlet seal and coordinate inconvenient defect.Therefore the present invention preferentially adopts the scheme of this specific embodiment.
Wherein, described slide-bar 22 is provided with two seals circle annular fixed seat along its axially spaced-apart, in the sealing ring fitting recess on two seals circle annular fixed seat, is equipped with sealing ring 24；Slide-bar 22 end count seal 24 seals with valve core housing 21 and coordinates, and on valve shaft 22, between two seals circle 24, interval forms commutation chamber 25；Described middle passage 210 connects with commutation chamber 25 all the time, described commutation chamber 25 axial length is less than the spacing distance of described first passage 211 and the second passage 212, and more than the spacing distance between described first passage 211 and middle passage 210, between the second passage 212 and middle passage 210.Stroke, i.e. scavenging air valve commutation stroke during for reduction slide-bar slide handover commutation position, chamber as far as possible, commutate chamber 25 axial length spacing distance close to the first passage 211 and the second passage 212.
For further improving the functional reliability of scavenging air valve, described slide-bar 22 is provided with annular avoiding hollow groove 26, and annular avoiding hollow groove 26 and commutation chamber 25 are along slide-bar 22 axial distribution, and annular avoiding hollow groove 26 is bordered by with commutation one end, chamber 25；Slide-bar 22 is provided with avoiding hollow groove sealing ring 261, avoiding hollow groove sealing ring 261 and one end, commutation chamber 25 sealing ring adjacent thereto with adjacent one end, commutation chamber 25 form annular avoiding hollow groove 26 and seal isolation in the axial direction；Slide-bar 22 is formed with pressure-releasing chamber 27 in corresponding commutation chamber 25 away from annular avoiding hollow groove 26 1 end position with valve core housing 21, pressure-releasing chamber 27 end count seal 24 seals off with commutation chamber 25, being provided with pressure release passage 5 between end cap and the valve body 1 of corresponding pressure-releasing chamber 27 one end on valve body 1, pressure release passage 5 connects pressure-releasing chamber 27 with extraneous；Described slide-bar 22 is provided with the axially extending bore 221 and radial direction through hole 222 that connect pressure-releasing chamber 27 and annular avoiding hollow groove 26, axially extending bore 221 one end is the opening connected with pressure-releasing chamber 27, axially extending bore 221 other end connects with radial direction through hole 222, and radial direction through hole 222 is the port being positioned at annular avoiding hollow groove 26 relative to the other end connecting one end with axially extending bore 221.In this specific embodiment, annular corresponding first position, gas outlet 11 of avoiding hollow groove 26, certainly corresponding second position, gas outlet 12 of annular avoiding hollow groove also can, for ease of the description to pressure leak process, order annular corresponding first passage 211 position of avoiding hollow groove 26；When then slide-bar 22 is slid onto the second passage 212 by corresponding first passage 211 in commutation chamber 25, then annular avoiding hollow groove 26 moves accordingly, owing to avoiding hollow groove 26 is bordered by with commutation chamber 25, annular avoiding hollow groove 26 first passage 211 corresponding with on valve core housing 21 connects, i.e. annular avoiding hollow groove and the connection of the first gas outlet, the executor's internal gas pressure being so connected with the first gas outlet can pass through the first passage, avoiding hollow groove, radial direction through hole, axially extending bore, pressure-releasing chamber, pressure release passage exhaust pressure relief；And adopt the design of avoiding hollow groove, radial direction through hole, axially extending bore to realize the respective actuators exhaust pressure relief that the first passage connects, have reasonable in design, compact conformation, and the loss of weight to slide-bar can be realized, not only reduce material cost, and make lightening of slide-bar, move axially more sensitive so that reversal valve commutation action is more sensitive.
In this specific embodiment, described control assembly includes compression spring 61, the opening location of compression spring 61 axially through hole 221 is assemblied in axially extending bore, compression spring 61 one end is pressed on bottom axially extending bore 221, compression spring 61 other end is pressed on end cap 3, and axial and axially extending bore 221 the opening opposite side of described slide-bar 22 is the drive end 223 being connected to drive source.On described valve body 1, the end cap 3 of corresponding compression spring 61 one end includes outer cover 31 and end cap backing plate 32, end cap backing plate 32 is fitted on valve body 1 through outer cover 31, described end cap backing plate 32 is provided with spring positioning seat towards pressure-releasing chamber 27 side, compression spring 61 positioning support is on spring positioning seat, described pressure release passage 5 includes the disappointing through hole 51 that end cap backing plate 32 is provided with, and end cap backing plate 32 is provided with some disappointing grooves 52 leading to side edge towards outer cover 31 side.Controlling assembly adopts slide-bar 22 one end to arrange compression spring 61 realization reset, slide-bar 22 other end drives through drive source, control modular construction simple, and compress spring 61 and be assemblied in axially extending bore 221, the overall axial length that slide-bar 22 is formed with compression spring 61 is short, compact assembling structure, and the axial length of compression spring 61 is overlapping with the axial length of slide-bar 22, compression spring 61 has longer axial length, one is to ensure that spring has enough deformation energy storage, and two ensure that compression spring 61 compression is mobile reliable.Certainly as possible modification structure of the present invention, control assembly can adopt motor, electromagnet apparatus, cylinder mechanism etc. directly and slide-bar is directly connected to drive, but exist and control modular construction complexity, the volume of scavenging air valve becomes big, inconvenience it is connected, it has not been convenient to the assembly connection etc. of each mechanism with slide-bar
Therefore the present invention preferentially adopts slide-bar one end to be the drive end connecting drive source, the slide-bar other end drives through spring reset；And the assembling of spring can adopt the location structure positioning support beyond axially extending bore, as arranged step shaft part on slide-bar, compression spring housing realizes the location and installation to compression spring on step shaft part, but there is axial length and be restricted in it, compress the inconvenience that arranges of spring and insecure defect that resets.
As currently preferred, the drive end of scavenging air valve slide-bar drives and adopts air pressure to drive control；Particularly as follows: on corresponding slide-bar 22, the end cap of drive end 223 is provided with ventilation nozzle 62 on described valve body 1, on described valve body 1, on corresponding slide-bar 22, the end cap of drive end 223 coordinates with valve core housing 21 end seal, and on valve body 1, on corresponding slide-bar 22, the end cap of drive end 223, valve core housing 21 and slide-bar 22 drive end 223 form the driving air cavity 63 connected with ventilation nozzle 62；Ventilation nozzle 22 one end grafting trachea, the ventilation nozzle other end leads to driving air cavity 63.Adopt gas-powered, then accordingly, the driving air cavity that the drive end of slide-bar is corresponding is compressible, and space is little, thus further realizing the compact conformation of scavenging air valve, volume is little；And adopting air pressure to drive, corresponding parts are few, and simple in construction has only to form a driving air cavity sealed and valve.
The scavenging air valve operation principle of the present invention is: state one: time in driving air cavity 63 without air pressure, under the effect of compression spring 61, the middle passage 210 of the middle venting cavity of air inlet 10 40 passage 211 first venting cavity 41 first gas outlet 11, chamber 25 first of commutating forms path, it is achieved the executor connected for the first gas outlet controls；The air pressure of residual in the executor that then the second gas outlet 12 connects, through the second gas outlet 12 second venting cavity 42 second passage 212 pressure-releasing chamber 27 pressure release passage 5, forms pressure release.
State two: when needing to commutate, drive in air cavity 63 and pass into air pressure, drive slide-bar 22 sliding in valve core housing 21, commutation chamber 25 on slide-bar 22 switches to the second passage 212 from the first passage 211, then the middle passage 210 of the middle venting cavity of air inlet 10 40 passage 212 second venting cavity 42 second gas outlet 12, chamber 25 second of commutating forms path, it is achieved the executor connected for the second gas outlet 12 controls；The air pressure of residual in the executor that then the first gas outlet 11 connects, through the first gas outlet 11 first venting cavity 41 first passage 211 avoiding hollow groove 26 radial direction through hole 222 axially extending bore 221 pressure-releasing chamber 27 pressure release passage 5, forms pressure release.
Claims (6)
- null1. a scavenging air valve，Include the valve body with valve pocket，It is assemblied in the core assembly in valve pocket，And control the control assembly of core assembly action，Described valve body is provided with the air inlet connected with valve pocket、First gas outlet、Second gas outlet，It is characterized in that: described valve body uuper valve chamber is tubular，The valve pocket two-port of valve body is covered with end cap respectively，Described core assembly includes valve core housing，And sliding coordinates the slide-bar in valve core housing，Control assembly to be connected with slide-bar driving，Slide-bar two ends are spacing through end cap，Described valve core housing is fixed in valve pocket，Valve core housing is provided with three groups of passages along valve core housing axial distribution，Three groups of passages respectively seal, with air inlet, the middle passage connected、The first passage connected with the first gas outlet seal、And the second passage connected with the second gas outlet seal，Described slide-bar is provided with two seals circle along its axially spaced-apart，Slide-bar end count seal seals with valve core housing and coordinates，And interval forms commutation chamber between two seals circle，Described middle passage connects with commutation chamber all the time，Described commutation chamber axial length is less than the spacing distance of described first passage and the second passage，And more than between described first passage and middle passage、Spacing distance between second passage and middle passage.
- 2. scavenging air valve according to claim 1, it is characterized in that: described slide-bar is provided with annular avoiding hollow groove, annular avoiding hollow groove and commutation chamber are along slide-bar axial distribution, annular avoiding hollow groove is bordered by with commutation one end, chamber, slide-bar is formed with pressure-releasing chamber in corresponding commutation chamber away from annular avoiding hollow groove one end position with valve core housing, pressure-releasing chamber end count seal and commutation chamber seal isolation, valve body is provided with pressure release passage between end cap and the valve body of corresponding pressure-releasing chamber one end, pressure release passage connection pressure-releasing chamber is with extraneous, described slide-bar is provided with the axially extending bore and radial direction through hole that connect pressure-releasing chamber and annular avoiding hollow groove, axially extending bore one end is the opening connected with pressure-releasing chamber, the axially extending bore other end connects with radial direction through hole, radial direction through hole is the port being positioned at annular avoiding hollow groove relative to the other end connecting one end with axially extending bore.
- 3. scavenging air valve according to claim 2, it is characterized in that: described control assembly includes compression spring, the opening location of compression spring axially through hole is assemblied in axially extending bore, compression spring one end is pressed on bottom axially extending bore, the compression spring other end is pressed on end cap, and axial and axially extending bore the opening opposite side of described slide-bar is the drive end being connected to drive source.
- 4. scavenging air valve according to claim 3, it is characterized in that: on described valve body, the end cap of corresponding compression spring one end includes outer cover and end cap backing plate, end cap backing plate is fitted on valve body through outer cover, described end cap backing plate is provided with spring positioning seat towards pressure-releasing chamber side, compression spring positioning support is on spring positioning seat, described pressure release passage includes the disappointing through hole that end cap backing plate is provided with, and end cap backing plate is provided with some disappointing grooves leading to side edge towards outer cover side.
- 5. scavenging air valve according to claim 3 or 4, it is characterized in that: on described valve body, on corresponding slide-bar, the end cap of drive end is provided with ventilation nozzle, on described valve body, on corresponding slide-bar, the end cap of drive end coordinates with valve core housing end seal, and on valve body, on corresponding slide-bar, the end cap of drive end, valve core housing and slide-bar drive end form the driving air cavity connected with ventilation nozzle.
- null6. scavenging air valve according to claim 1 or 2 or 3，It is characterized in that: described valve core housing and valve pocket interval coordinate，Separate space between valve core housing and the formation of valve pocket interval，Valve core housing is located axially at middle passage both sides and is provided with and realizes the intermediate seal ring that valve core housing coordinates with valve pocket sealing，Intermediate seal ring is twice，And lay respectively between the first passage and middle passage、And between the second passage and middle passage，Described separate space is divided into the middle venting cavity axially closing isolation through twice intermediate seal ring，Described middle venting cavity connection air inlet and middle passage，Described valve core housing is provided with the first sealing ring axially adjacent to first passage one end，Described separate space is divided into the first venting cavity axially closing isolation through the first sealing ring and intermediate seal ring adjacent thereto，First venting cavity connects the first passage and the first gas outlet，Described valve core housing is provided with the second sealing ring axially adjacent to second passage one end，Described separate space is divided into the second venting cavity axially closing isolation through the second sealing ring and intermediate seal ring adjacent thereto，Second venting cavity connects the second passage and the second gas outlet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410337037.3A CN104100734B (en) | 2014-07-15 | 2014-07-15 | A kind of scavenging air valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410337037.3A CN104100734B (en) | 2014-07-15 | 2014-07-15 | A kind of scavenging air valve |
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| CN104100734A CN104100734A (en) | 2014-10-15 |
| CN104100734B true CN104100734B (en) | 2016-07-06 |
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| CN201410337037.3A Active CN104100734B (en) | 2014-07-15 | 2014-07-15 | A kind of scavenging air valve |
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| CN115182991A (en) * | 2022-06-20 | 2022-10-14 | 陕西法士特齿轮有限责任公司 | Two-position four-way reversing air valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5236001A (en) * | 1991-12-20 | 1993-08-17 | Thomas Kleles | Dual fluid remote control valve |
| CN1181475A (en) * | 1996-10-28 | 1998-05-13 | 速睦喜股份有限公司 | Pilot 3-port transfer valve |
| CN202082427U (en) * | 2011-06-16 | 2011-12-21 | 重庆长江涂装设备有限责任公司 | Pneumatic two-position four-way change valve |
| CN202561124U (en) * | 2012-05-23 | 2012-11-28 | 广东省肇庆方大气动有限公司 | Dual pilot-type electric control reversing valve |
| JP2013204603A (en) * | 2012-03-27 | 2013-10-07 | Kyb Co Ltd | Fluid pressure control device |
| CN203940039U (en) * | 2014-07-15 | 2014-11-12 | 瑞安市洛伊德机车部件有限公司 | A kind of scavenging air valve |
-
2014
- 2014-07-15 CN CN201410337037.3A patent/CN104100734B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5236001A (en) * | 1991-12-20 | 1993-08-17 | Thomas Kleles | Dual fluid remote control valve |
| CN1181475A (en) * | 1996-10-28 | 1998-05-13 | 速睦喜股份有限公司 | Pilot 3-port transfer valve |
| CN202082427U (en) * | 2011-06-16 | 2011-12-21 | 重庆长江涂装设备有限责任公司 | Pneumatic two-position four-way change valve |
| JP2013204603A (en) * | 2012-03-27 | 2013-10-07 | Kyb Co Ltd | Fluid pressure control device |
| CN202561124U (en) * | 2012-05-23 | 2012-11-28 | 广东省肇庆方大气动有限公司 | Dual pilot-type electric control reversing valve |
| CN203940039U (en) * | 2014-07-15 | 2014-11-12 | 瑞安市洛伊德机车部件有限公司 | A kind of scavenging air valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104100734A (en) | 2014-10-15 |
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