CN108730582A - One kind manually controlling adjusting blowing plant - Google Patents
One kind manually controlling adjusting blowing plant Download PDFInfo
- Publication number
- CN108730582A CN108730582A CN201810861374.0A CN201810861374A CN108730582A CN 108730582 A CN108730582 A CN 108730582A CN 201810861374 A CN201810861374 A CN 201810861374A CN 108730582 A CN108730582 A CN 108730582A
- Authority
- CN
- China
- Prior art keywords
- voltage regulating
- module
- valve body
- rotational handle
- spool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
-
- 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
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
-
- 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
- F16K31/44—Mechanical actuating means
- F16K31/52—Mechanical actuating means with crank, eccentric, or cam
- F16K31/524—Mechanical actuating means with crank, eccentric, or cam with a cam
- F16K31/52475—Mechanical actuating means with crank, eccentric, or cam with a cam comprising a sliding valve
- F16K31/52483—Mechanical actuating means with crank, eccentric, or cam with a cam comprising a sliding valve comprising a multiple-way sliding valve
-
- 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
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
Abstract
The invention discloses one kind manually controlling adjusting blowing plant, including valve body and valve deck, valve deck is connected by multiple fastening assemblies with valve body, valve inner is respectively arranged with commutation chamber and pressure regulating cavity, commutation chamber respectively with the air inlet that is opened up on valve body, exhaust outlet, working hole is connected, pressure regulating cavity is connected with working hole, commutation chamber is internally provided with keying inverting module, pressure regulating cavity is internally provided with the first voltage regulating module and the second voltage regulating module, open and close inverting module, first voltage regulating module and the second voltage regulating module are connected with rotational handle by transmission mechanism respectively, rotational handle is threaded through in valve deck.The present invention realizes the commutation of compressed air, pressure regulation integration, and different angles is rotated by rotational handle, realizes the control function depressurized to the linear ratio of compressed air, is adjusted when improving high pressure, commutation stabilization efficiency.
Description
Technical field
The present invention relates to control and regulation compressed air technique fields more particularly to one kind manually controlling adjusting compressed air dress
It sets.
Background technology
Currently, generally using the pressure regulator adjusting stability of commutation, the pressure regulation of compressed air poor in the market, for barometric wave
It is dynamic big, and the difficult commutation for realizing compressed air, pressure regulation integration, to compressed air can not linear ratio Decompression Controlling, high pressure
When adjust, stablize inefficient.
Invention content
The present invention mainly solve the prior art in the presence of the technical issues of, to provide it is a kind of commutation, pressure regulation one
Change, adjusting blowing plant is manually controlled to the linear ratio Decompression Controlling of compressed air.
The above-mentioned technical problem of the present invention is mainly to be addressed by following technical proposals：
Provided by the invention to manually control adjusting blowing plant, including valve body and valve deck, the valve deck passes through multiple
Fastening assembly is connected with the valve body, and the valve inner is respectively arranged with commutation chamber and pressure regulating cavity, the commutation chamber difference
It is connected with air inlet, exhaust outlet, the working hole opened up on the valve body, the pressure regulating cavity is connected with the working hole,
In, the commutation chamber is internally provided with keying inverting module, and the pressure regulating cavity is internally provided with the first voltage regulating module and second and adjusts
Die block, the keying inverting module, the first voltage regulating module and the second voltage regulating module are connected with rotation by transmission mechanism respectively
Handle, the rotational handle are threaded through in the valve deck.
Further, the keying inverting module includes spool, second back-moving spring and lower cover, the spool top and institute
It states transmission mechanism to be connected, and is provided with multiple dustbands, the spool lower part between the spool top and the commutation chamber
It is connected with the lower cover by the second back-moving spring, the lower cover is arranged in the body base.
Further, first voltage regulating module and the second voltage regulating module structure are identical, wherein first voltage regulating module
Including piston, counterbalance spring, mandril, decline spring and blocking mechanism, the upper piston area by the transmission mechanism with it is described
Rotational handle is connected, and the piston lower portion is connected by the counterbalance spring with the mandril, and the mandril passes through described
Decline spring with the blocking mechanism to be connected.
Further, the blocking mechanism includes guide sleeve, lower blocking and (the first back-moving spring, inside the guide sleeve with it is described
Mandril is connected, and the guide sleeve upper surface is connected with the decline spring, and the guide sleeve lower end and the lower blocking phase
Connection, the lower blocking are connected by the (the first back-moving spring with the pressure regulating cavity bottom end.
Further, the transmission mechanism includes axis pin, flat key and cam briquetting, and the rotational handle passes through the pin
Axis, flat key are connected with the cam briquetting, and cam briquetting one end is connected with the piston, the other end and the spool
Match connection.
Further, the rotational handle top is provided with handle ball, and rubber sleeve is arranged between lower part and the valve deck,
And the rotational angle of the rotational handle is 0~18 °.
Further, between the commutation chamber and the spool, between the pressure regulating cavity and the piston, mandril, guide sleeve
It is respectively arranged with sealing ring.
The beneficial effects of the present invention are：Inverting module, the first voltage regulating module and the are opened and closed by being arranged in valve inner
Two voltage regulating modules, and by transmission mechanism and rotational handle realize compressed air commutation, pressure regulation integration, pass through rotate hand
Handle rotates different angles, realizes the control function depressurized to the linear ratio of compressed air, adjusts, stablizes when improving high pressure
Efficiency；Meanwhile overall appearance of the invention is compact, duty ratio is small, light and handy portable.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the first voltage regulating module and the second voltage regulating module structure for manually controlling adjusting blowing plant of the present invention
Sectional view；
Fig. 2 is the keying inverting module structure sectional view for manually controlling adjusting blowing plant of the present invention；
Fig. 3 is the keying inverting module lateral partial structurtes sectional view for manually controlling adjusting blowing plant of the present invention；
Fig. 4 is the keying inverting module lateral partial structurtes sectional view for manually controlling adjusting blowing plant of the present invention；
Fig. 5 is the pneumatic schematic diagram for manually controlling adjusting blowing plant of the present invention.
Specific implementation mode
The preferred embodiment of the present invention is described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
Refering to fig. 1 shown in -5, of the invention manually controls adjusting blowing plant, including valve body 1 and valve deck 2, valve deck 2
It is connected with valve body 1 by multiple fastening assemblies 3, fastening assembly 3 can be the fasteners such as hexagon socket cap head screw, bolt；
Be respectively arranged with commutation chamber 4 and pressure regulating cavity 5 inside valve body 1, commutation chamber 4 respectively with the air inlet 6, the exhaust outlet that are opened up on valve body 1
7, working hole 10 is connected, and pressure regulating cavity 5 is connected with working hole 10, wherein and commutation chamber 4, which is internally provided with, opens and closes inverting module 8,
Pressure regulating cavity 5 is internally provided with the first voltage regulating module 9 and the second voltage regulating module 16, opens and closes inverting module 8,9 and of the first voltage regulating module
Second voltage regulating module 16 is connected with rotational handle 12 by transmission mechanism 11 respectively, and rotational handle 12 is threaded through in valve deck 2.
The present invention opens and closes inverting module 8, the first voltage regulating module 9 and the second voltage regulating module 16 by being arranged inside valve body 1,
And the commutation of compressed air, pressure regulation integration are realized by transmission mechanism 11 and rotational handle 12, by 12 turns of rotational handle
Dynamic different angle, realizes the control function depressurized to the linear ratio of compressed air, improves the effect for adjusting, stablizing when high pressure
Rate；Meanwhile overall appearance of the invention is compact, duty ratio is small, light and handy portable.
Specifically, it opens and closes inverting module 8 and includes spool 81, second back-moving spring 82 and lower cover 83,81 top of spool and biography
Motivation structure 11 is connected, and is provided with multiple dustbands 84 between 81 top of spool and commutation chamber 4, avoids clan in commutation chamber 4
Enter dust, influences compressed air circulation effect, reduce commutation degree of regulation；81 lower part of spool is by second back-moving spring 82 under
Lid 83 is connected, and lower cover 83 is arranged in 1 bottom of valve body.In the present invention, the commutation ability of inverting module 8 is opened and closed similar to normally closed two
Position three-way valve, by rotating rotational handle 12 manually, transmission mechanism 11 pushes spool 81, and specifically, transmission mechanism 11 includes pin
Axis 111, flat key 112 and cam briquetting 113, rotational handle 12 are connected by axis pin 111, flat key 112 with cam briquetting 113,
113 one end of cam briquetting is connected with piston 92, and the other end matches with spool 81 to be connect, therefore cam briquetting 113 pushes valve
Core 81 compresses second back-moving spring 82 and realizes commutation, that is, opens and closes on-off action.In general, A, that is, working hole 10 connects brake apparatus, i.e., just
Beginning state, power plant are lockable in off position；Rotational handle 12 is stirred, spool 81 acts, power plant unlock, simultaneously
B or C working holes work, and realize compressed air commutation voltage regulation function.
Specifically, the first voltage regulating module 9 is identical with 16 structure of the second voltage regulating module, wherein the first voltage regulating module 9 includes living
Plug 92, mandril 94, declines spring 95 and blocking mechanism 91 at counterbalance spring 93, and 92 top of piston passes through transmission mechanism 11 and rotation
Handle 12 is connected, and 92 lower part of piston is connected by counterbalance spring 93 with mandril 94, and mandril 94, which passes through, declines spring 95 and envelope
Plug mechanism 91 is connected.Wherein, blocking mechanism 91 includes guide sleeve 911, lower blocking 912 and (the first back-moving spring 913, guide sleeve 911
Internal to be connected with mandril 94,911 upper surface of guide sleeve is connected with spring 95 is declined, and 911 lower end of guide sleeve and lower blocking
912 are connected, and lower blocking 912 is connected by (the first back-moving spring 913 with 5 bottom end of pressure regulating cavity.In the present invention, rotation hand is stirred
Handle 12,11 convexity wheel briquetting 113 of transmission mechanism push piston 92,92 compression compensation spring 93 of piston, counterbalance spring 93 to push away indirectly
Dynamic mandril 94, mandril 94 is by declining spring 95, the open-top lower blocking 912 of guide sleeve 911, according to each spring force and pressure medium
Equilibrium relation, the angle that rotational handle 12 rotates determines the aperture that lower blocking 912 is opened, i.e. ventilation flow rate, to change work
Make the air pressure size of the output of mouth 10.
Preferably, 12 top of rotational handle is provided with handle ball 13, and the two is fastened using screw connection manner, easy to disassemble, together
When facilitate adjusting personnel rotational handle 12, good hand touch；It is arranged rubber sleeve 14 between 12 lower part of rotational handle and valve deck 2, is helped
In preventing dust from entering inside valve body 1 by the gap between rotational handle 12 and valve deck 2, air circulation is influenced；Rotational handle
12 rotational angle, which is 0~18 °, to be helped efficiently to control to adjust ventilation flow rate, is changed linearly.
Preferably, it commutates and is set respectively between chamber 4 and spool 81, between pressure regulating cavity 5 and piston 92, mandril 94, guide sleeve 911
It is equipped with sealing ring 15, helps to ensure that the leakproofness of valve body 1, in of the invention, sealing ring 15 can be O-ring, squared circle etc..
The technical parameter of the present invention is as follows：
1. working media：Compressed air；
2. input pressure：Maximum 8bar；
3. adjusting pressure limit：0-8bar is in a linear relationship；
4. flow velocity：187L/min；
5. lag error：Maximum 1bar；
6. operating temperature：- 10-70 degrees Celsius；
8. spool torque：Reach 4NM in the case of 8bar；
9. working hole latus rectumMillimeter, air inlet, exhaust outlet latus rectumMillimeter.
More than, specific implementation mode only of the invention, but scope of protection of the present invention is not limited thereto, it is any without
The change or replacement that creative work is expected are crossed, should be covered by the protection scope of the present invention.Therefore, protection of the invention
Range should be determined by the scope of protection defined in the claims.
Claims (7)
1. one kind manually controlling adjusting blowing plant, including valve body (1) and valve deck (2), which is characterized in that the valve deck
(2) it is connected with the valve body (1) by multiple fastening assemblies (3), commutation chamber (4) is respectively arranged with inside the valve body (1)
With pressure regulating cavity (5), the commutation chamber (4) respectively with the air inlet (6), exhaust outlet (7), working hole that are opened up on the valve body (1)
(10) it is connected, the pressure regulating cavity (5) is connected with the working hole (10), wherein the commutation chamber (4), which is internally provided with, opens
Inverting module (8) is closed, the pressure regulating cavity (5) is internally provided with the first voltage regulating module (9) and the second voltage regulating module (16), described to open
It closes inverting module (8), the first voltage regulating module (9) and the second voltage regulating module (16) and rotation is connected with by transmission mechanism (11) respectively
Handle (12), the rotational handle (12) are threaded through in the valve deck (2).
2. manually controlling adjusting blowing plant as described in claim 1, which is characterized in that the keying inverting module
(8) include spool (81), second back-moving spring (82) and lower cover (83), spool (81) top and the transmission mechanism (11)
It is connected, and is provided with multiple dustbands (84) between the spool (81) top and the commutation chamber (4), the spool (81)
Lower part is connected by the second back-moving spring (82) with the lower cover (83), and the lower cover (83) is arranged in the valve body
(1) bottom.
3. manually controlling adjusting blowing plant as claimed in claim 2, which is characterized in that first voltage regulating module
(9) identical with the second voltage regulating module (16) structure, wherein the first voltage regulating module (9) include piston (92), counterbalance spring (93),
Mandril (94), decline spring (95) and blocking mechanism (91), piston (92) top pass through the transmission mechanism (11) and institute
It states rotational handle (12) to be connected, piston (92) lower part is connected by the counterbalance spring (93) with the mandril (94)
It connects, the mandril (94) is connected across the decline spring (95) with the blocking mechanism (91).
4. manually controlling adjusting blowing plant as claimed in claim 3, which is characterized in that blocking mechanism (91) packet
Guide sleeve (911), lower blocking (912) and (the first back-moving spring (913) are included, is matched with the mandril (94) inside the guide sleeve (911)
Close connection, guide sleeve (911) upper surface is connected with the decline spring (95), and the guide sleeve (911) lower end with it is described
Lower blocking (912) is connected, and the lower blocking (912) passes through the (the first back-moving spring (913) and the pressure regulating cavity (5) bottom end
It is connected.
5. according to any one of claims 1-4 manually control adjusting blowing plant, which is characterized in that the driver
Structure (11) includes axis pin (111), flat key (112) and cam briquetting (113), and the rotational handle (12) passes through the axis pin
(111), flat key (112) is connected with the cam briquetting (113), described cam briquetting (113) one end and the piston (92)
It is connected, the other end matches with the spool (81) to be connect.
6. manually controlling adjusting blowing plant as claimed in claim 5, which is characterized in that rotational handle (12) top
End is provided with handle ball (13), is arranged rubber sleeve (14) between lower part and the valve deck (2), and the rotational handle (12)
Rotational angle is 0~18 °.
7. manually controlling adjusting blowing plant as claimed in claim 4, which is characterized in that the commutation chamber (4) and institute
State between spool (81), be respectively arranged between the pressure regulating cavity (5) and the piston (92), mandril (94), guide sleeve (911) it is close
Seal (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810861374.0A CN108730582B (en) | 2018-08-01 | 2018-08-01 | Manual control compressed air adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810861374.0A CN108730582B (en) | 2018-08-01 | 2018-08-01 | Manual control compressed air adjusting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108730582A true CN108730582A (en) | 2018-11-02 |
| CN108730582B CN108730582B (en) | 2023-08-11 |
Family
ID=63942115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810861374.0A Active CN108730582B (en) | 2018-08-01 | 2018-08-01 | Manual control compressed air adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108730582B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85104146A (en) * | 1985-06-03 | 1986-12-03 | 叶光祖 | Hand controled synchronous reversal valve |
| CN1172522A (en) * | 1994-11-14 | 1998-02-04 | 株式会社小松制作所 | Hydraulic pilot valve |
| CN201615100U (en) * | 2009-12-31 | 2010-10-27 | 贵州枫阳液压有限责任公司 | Hydraulic pilot valve |
| CN102336187A (en) * | 2011-08-03 | 2012-02-01 | 石家庄中煤装备制造股份有限公司 | Hand brake valve of rubber-tire vehicle |
| CN104564878A (en) * | 2014-12-19 | 2015-04-29 | 杭州前进齿轮箱集团股份有限公司 | Manual-control inching reversal valve |
| CN105605233A (en) * | 2016-01-13 | 2016-05-25 | 台州信溢农业机械有限公司 | Combined high pressure adjusting valve |
| CN106930994A (en) * | 2017-05-09 | 2017-07-07 | 江苏力源液压机械有限公司 | Position floating reversal valve is jumped in the manual pressurize of tractor |
-
2018
- 2018-08-01 CN CN201810861374.0A patent/CN108730582B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85104146A (en) * | 1985-06-03 | 1986-12-03 | 叶光祖 | Hand controled synchronous reversal valve |
| CN1172522A (en) * | 1994-11-14 | 1998-02-04 | 株式会社小松制作所 | Hydraulic pilot valve |
| CN201615100U (en) * | 2009-12-31 | 2010-10-27 | 贵州枫阳液压有限责任公司 | Hydraulic pilot valve |
| CN102336187A (en) * | 2011-08-03 | 2012-02-01 | 石家庄中煤装备制造股份有限公司 | Hand brake valve of rubber-tire vehicle |
| CN104564878A (en) * | 2014-12-19 | 2015-04-29 | 杭州前进齿轮箱集团股份有限公司 | Manual-control inching reversal valve |
| CN105605233A (en) * | 2016-01-13 | 2016-05-25 | 台州信溢农业机械有限公司 | Combined high pressure adjusting valve |
| CN106930994A (en) * | 2017-05-09 | 2017-07-07 | 江苏力源液压机械有限公司 | Position floating reversal valve is jumped in the manual pressurize of tractor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108730582B (en) | 2023-08-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4696320A (en) | Pressure control valve with push-pull locking adjustment knob | |
| CN108662238B (en) | A kind of gate valve with pneumatic display function | |
| CN108730582A (en) | One kind manually controlling adjusting blowing plant | |
| CN208764404U (en) | One kind manually controlling adjusting blowing plant | |
| CN2914992Y (en) | Height adjusting automatically rod for shower | |
| CN206874845U (en) | Manual adjusting air valve | |
| CN115435124A (en) | Self-operated nitrogen seals governing valve for pressure relief device | |
| US11415236B1 (en) | Gas pressure regulating device | |
| CN108953739A (en) | It relies on oneself current stabilization gas ratio valve and current stabilization method of relying on oneself | |
| CN208642060U (en) | A kind of air filter with self-seal device | |
| CN205090033U (en) | Pressure regulating valve | |
| CN207080669U (en) | A kind of effective carbon-dioxide pressure reducer | |
| CN211779301U (en) | Pneumatic valve | |
| CN206889720U (en) | Electrodeless gas valve body | |
| CN111219494A (en) | Stop valve | |
| CN204935491U (en) | Reversible ratcheting tool | |
| CN217301620U (en) | High leakproofness integral type forging needle valve | |
| CN219413654U (en) | Large-caliber gas shut-off valve with simple installation and convenient maintenance | |
| CN218625540U (en) | One-way throttle valve for metal pipeline | |
| CN214946743U (en) | Pressure regulating electromagnetic valve | |
| CN216692331U (en) | Pilot-operated pressure reducer | |
| CN215487858U (en) | Novel flow control relief valve | |
| CN2527821Y (en) | Safety valve pressure-regulating sealing structure for electric water heater | |
| CN212055880U (en) | Pressure regulating butterfly valve | |
| CN209309337U (en) | A kind of pressure regulator valve of high sensitivity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |