CN106224598A - Operated pneumatic valve - Google Patents
Operated pneumatic valve Download PDFInfo
- Publication number
- CN106224598A CN106224598A CN201610782758.4A CN201610782758A CN106224598A CN 106224598 A CN106224598 A CN 106224598A CN 201610782758 A CN201610782758 A CN 201610782758A CN 106224598 A CN106224598 A CN 106224598A
- Authority
- CN
- China
- Prior art keywords
- gas transmission
- straight tube
- transmission straight
- gangbar
- valve
- 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
- F16K13/00—Other constructional types of cut-off apparatus; Arrangements for cutting-off
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
- F15C3/00—Circuit elements having moving parts
- F15C3/10—Circuit elements having moving parts using nozzles or jet pipes
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
-
- 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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
-
- 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
-
- 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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
Abstract
The invention provides a kind of operated pneumatic valve, gas transmission straight tube, this gas transmission straight tube is the elastic tube that can bend right and left, this gas transmission straight tube is arranged in gas tube wall, one end of gas transmission straight tube is connected with the gas transmission mouth of pipe, and the other end of described gas transmission straight tube is connected with valve body, and the stage casing of described gas transmission straight tube is unsettled and is connected with upper gangbar and lower gangbar, described upper gangbar is connected with pressure joint control portion, and described lower gangbar is connected with buffer part；Valve body, described valve body is provided with the air chamber being connected with gas transmission straight tube, and described air chamber side is provided with air vent, just nozzle is being additionally provided with one can closer or far from envelope mouth；Described upper gangbar and lower gangbar are connected with the closure plug on gas transmission straight tube.Operated pneumatic valve of the present invention can realize aeropulse, and the implementation of aeropulse is various and can freely switch and adjust, and can meet big flow gas eject request, to industrial adaptability and practical.
Description
Technical field
The invention belongs to valve field, especially relate to a kind of operated pneumatic valve.
Background technology
Operated pneumatic valve can control the parameters such as the air pressure of gas piping, gas flow, needs in the industrial production existing
High-pressure gas pipeline carries out transforming to realize the realization of aeropulse, but existing valve realizes, and cost is high, transform difficulty,
Accordingly, it would be desirable to improve further and perfect.
Summary of the invention
In view of this, it is contemplated that propose a kind of operated pneumatic valve, to realize the aeropulse to high-pressure gas pipeline
Realization, particularly realize control and the pipeline transformation of aeropulse.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
A kind of operated pneumatic valve, including:
Gas transmission straight tube, this gas transmission straight tube is the elastic tube that can bend right and left, and this gas transmission straight tube is arranged in gas tube wall, defeated
One end of gas straight tube is connected with the gas transmission mouth of pipe, and the other end of described gas transmission straight tube is connected with valve body, described gas transmission straight tube and gas transmission
Being provided with switch valve between the mouth of pipe, described gas transmission straight tube is fixed on connector by symmetrically arranged two sections of stop collars, described gas transmission
The stage casing of straight tube is unsettled and is connected with upper gangbar and lower gangbar, between described upper gangbar and lower gangbar and gas transmission straight tube
Angle is 30-60 °, and described upper gangbar is connected with pressure joint control portion, and described pressure joint control portion includes extension sleeve, fore-set, auxiliary
Helping sleeve and hydraulic cylinder, described lower gangbar to be connected with buffer part, buffer part includes swinging axle and symmetrically arranged two pieces of valve plates,
Described two pieces of valve plates are connected with the sidewall of buffer part by spring respectively, and the axial-movement of described lower gangbar drives swinging axle axle
Line moves, and the axial-movement of swinging axle drives valve plate to limit the open and close movement of valve plate along swinging axle open and close movement, described spring；
Valve body, described valve body is provided with the air chamber being connected with gas transmission straight tube, and described air chamber side is provided with air vent, described defeated
Gas straight tube gos deep in air chamber by a nozzle, just nozzle is being additionally provided with one can closer or far from envelope mouth, described envelope mouth lead to
Crossing elastic mechanism, motion bar and reciprocating motor to connect, described reciprocating motor is arranged on the backboard on rear side of valve body；
Described upper gangbar and lower gangbar are connected with the closure plug on gas transmission straight tube, described upper gangbar and lower gangbar
Move up and down drive closure plug control gas transmission straight tube flow；
Described reciprocating motor, hydraulic cylinder are connected with motor control room.
Further, described exhaust ports is additionally provided with baroceptor, and described motor control room is according to baroceptor
Pressure signal controls the position of first line of a couplet lever by hydraulic cylinder.
Further, described gas transmission straight tube is connected by valve converting interface with valve body, is additionally provided with pipe box at described valve converting interface
Part and sealing shroud.
Further, at the described gas transmission mouth of pipe, be provided with noise abatement cushion, described noise abatement cushion by mouth of pipe connector with
The gas transmission mouth of pipe connects.
Further, described air chamber and air vent part are additionally provided with level 2 buffering net.
Relative to prior art, operated pneumatic valve of the present invention has the advantage that
(1) operated pneumatic valve of the present invention can realize aeropulse, and the implementation of aeropulse is various and can
Freely switch and adjust, big flow gas eject request can be met, to industrial adaptability and practical；
(2) operated pneumatic valve noise of the present invention is little, simple in construction, easy to operate.
Accompanying drawing explanation
The accompanying drawing of the part constituting the present invention is used for providing a further understanding of the present invention, and the present invention's is schematic real
Execute example and illustrate for explaining the present invention, being not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the operated pneumatic valve described in the embodiment of the present invention；
Fig. 2 is the schematic diagram of the closure plug of the operated pneumatic valve described in the embodiment of the present invention.
Description of reference numerals:
10-gas tube wall；The 11-gas transmission mouth of pipe；12-gas transmission straight tube；13-mouth of pipe connector；14-valve converting interface；15-noise abatement
Cushion；16-blocks plug；20-pressure joint control portion；21-extension sleeve；22-fore-set；23-assists sleeve；The upper gangbar of 24-；
Gangbar under 25-；26-swinging axle；27-buffer part；28-valve plate；29-spring；30-valve body；31-air chamber；32-nozzle；33-seals
Mouth；34-elastic mechanism；35-motion bar；36-reciprocating motor；41-switch valve；42-stop collar；43-connector；44-sealing shroud；
45-pipe box part；51-motor control room；52-air vent；53-baroceptor；54-level 2 buffering net；55-backboard.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the present invention and the feature in embodiment can phases
Combination mutually.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ", " on ", D score,
Orientation or the position relationship of the instruction such as "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description rather than instruction or dark
The device or the element that show indication must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that right
The restriction of the present invention.Additionally, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicate or hint phase
To importance or the implicit quantity indicating indicated technical characteristic.Thus, the feature defining " first ", " second " etc. can
To express or to implicitly include one or more this feature.In describing the invention, except as otherwise noted, " multiple "
It is meant that two or more.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be fixing connection, it is also possible to be to removably connect, or be integrally connected；Can
To be mechanical connection, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
1-2 in conjunction with the embodiments describe the present invention in detail below with reference to the accompanying drawings.
The present invention provides a kind of and can be used for the industrial valve realizing aeropulse action, and this valve can be applicable
In existing high-pressure gas pipeline, in an advantageous embodiment, it is provided that a kind of operated pneumatic valve, as it is shown in figure 1, include:
Gas transmission straight tube 12, this gas transmission straight tube 12 is the elastic tube that can bend right and left, and this gas transmission straight tube 12 is arranged on gas tube
In wall 10, one end of gas transmission straight tube 12 is connected with the gas transmission mouth of pipe 11, and the other end of described gas transmission straight tube 12 is connected with valve body 30, institute
Stating and be provided with switch valve 41 between gas transmission straight tube 12 and the gas transmission mouth of pipe 11, described gas transmission straight tube 12 is by symmetrically arranged two sections of stop collars
42 are fixed on connector 43, and the stage casing of described gas transmission straight tube 12 is unsettled and is connected with upper gangbar 244 and lower gangbar 25, institute
The angle stated between gangbar 244 and lower gangbar 25 and gas transmission straight tube 12 is 30-60 °, and described upper gangbar 244 joins with pressure
Control portion 20 connects, and described pressure joint control portion 20 includes extension sleeve 21, fore-set 22, auxiliary sleeve 23 and hydraulic cylinder, the described second line of a couplet
Lever 25 is connected with buffer part 27, and buffer part 27 includes swinging axle 26 and symmetrically arranged two pieces of valve plates 28, described two pieces of valve plates
28 are connected with the sidewall of buffer part 27 by spring 29 respectively, and the axial-movement of described lower gangbar 25 drives swinging axle 26 axis
Motion, the axial-movement of swinging axle 26 drives valve plate 28 to limit opening of valve plate 28 along swinging axle 26 open and close movement, described spring 29
Resultant motion；
Valve body 30, described valve body 30 is provided with the air chamber 31 being connected with gas transmission straight tube 12, and described air chamber 31 side is provided with row
QI KOU 52, described gas transmission straight tube 12 gos deep in air chamber 31 by a nozzle 32, just nozzle 32 is being additionally provided with one can near or
Away from envelope mouth 33, described envelope mouth 33 is connected by elastic mechanism 34, motion bar 35 and reciprocating motor 36, described reciprocating motor 36
It is arranged on the backboard 55 on rear side of valve body 30；
Described upper gangbar 244 and lower gangbar 25 are connected with the closure plug 16 on gas transmission straight tube 12, described upper gangbar
244 drive the flow of closure plug 16 control gas transmission straight tube 12, as shown in Figure 2 with moving up and down of lower gangbar 25；
Described reciprocating motor 36, hydraulic cylinder are connected with motor control room 51.
Being additionally provided with baroceptor 53 at described air vent 52, described motor control room 51 is according to the pressure of baroceptor 53
Force signal controls the position of first line of a couplet lever 244 by hydraulic cylinder.
Described gas transmission straight tube 12 is connected by valve converting interface 14 with valve body 30, is additionally provided with pipe box part at described valve converting interface 14
45 and sealing shroud 44.
Being provided with noise abatement cushion 15 at the described gas transmission mouth of pipe 11, described noise abatement cushion 15 passes through mouth of pipe connector 13 with defeated
Gas tube orifice 11 connects.
Described air chamber 31 is additionally provided with level 2 buffering net 54 with air vent 52, and level 2 buffering net 54 can slow down gases at high pressure
Jet impact to air vent 52.
Four kinds of control models at least can be realized by motor control room 51:
Pattern 1: the rule pulse that reciprocating motor 36 controls.
Under this mode state, envelope mouth 33 moves reciprocatingly under the control of reciprocating motor 36, at envelope mouth 33 and nozzle 32
In the recurrent state closed or open so that the gases at high pressure in high-pressure gas pipeline pass through air chamber 31 and air vent 52 with rule
Pulsed mode spray, in order to ensure the stability of gas transmission straight tube 12 in such a mode, stop collar 42 is joined connector 43
Under conjunction, fixing gas transmission straight tube 12 makes it keep stable and occur without the displacements such as vibrations, can realize the high pressure gas of intermittent type under this pattern
Body spray, i.e. realize: jet, die, the circulation of jet.
Pattern 1.1: the rule pulse that reciprocating motor 36 controls.
On the basis of pattern 1, motor control room 51 can also control the position of first line of a couplet lever 244 by hydraulic cylinder, enters
And control the flow of high-pressure gas pipeline phase nozzle 32 eluting gas, and then control the maximum spout tolerance of pulsed injection gas.
Pattern 2: the rule pulse that hydraulic cylinder controls.
Under this mode state, envelope mouth 33 separates with nozzle 32, and reciprocating motor 36 disconnects, and stop collar 42 is at connector 43
Under cooperation, fixing gas transmission straight tube 12 makes it keep stable and occur without the displacements such as vibrations, controls first line of a couplet lever 244 by hydraulic cylinder
Position, upper gangbar 244 controls the position of closure plug 16, and then controls the flow of gases at high pressure that gas transmission straight tube 12 passes through,
The spraying high-pressure gas of continuous way can be realized under this pattern, i.e. realize: big jet, little jet, the circulation of big jet.
Pattern 3: from the pulse realized.
Under this mode state, envelope mouth 33 contacts with nozzle 32, and reciprocating motor 36 disconnects, and hydraulic cylinder controls first line of a couplet lever
244 are in a fixed position, i.e. air pressure in gas transmission straight tube 12 keeps stable, and stop collar 42 is fixed defeated under the cooperation of connector 43
The two ends of gas straight tube 12 so that caused gas transmission by the buffer brake of envelope mouth 33 when nozzle 32 is in high-pressure gas flow air inlet chamber 31
The stage casing bending of straight tube 12, the gases at high pressure that the bending of gas transmission straight tube 12 makes nozzle 32 flow out strengthen, and gas transmission straight tube 12 is from curved
Recovery under curved state causes sealing mouth 33 and contacts with nozzle 32, and the gases at high pressure that nozzle 32 flows out reduce, and form gases at high pressure
Erratic impulse jet.
Pattern 3.1: the pulse being automatically adjusted with air pressure change.
Sensing the air pressure in air chamber 31 by baroceptor 53, motor control room 51 is according to the pressure of baroceptor 53
Signal controls the position of first line of a couplet lever 244 by hydraulic cylinder, the position of upper gangbar 244 so that control the position of closure plug 16 from
And adjust the air pressure of gas transmission straight tube 12 inner high voltage gas, when high-pressure gas pressure reduces, tune up gas transmission by closure plug 16 straight
The pressure of pipe 12 inner high voltage gas, when high-pressure gas pressure subtracts big, turns gas transmission straight tube 12 inner high voltage gas down by closure plug 16
The pressure of body, thus form the pulsed injection gas that expulsion pressure is more stable.
Pattern 4: the pulse of buffer part regulation.
Under this mode state, envelope mouth 33 contacts with nozzle 32, and reciprocating motor 36 disconnects, along with injection gas in envelope mouth 33
The gas transmission straight tube about 12 caused bends shake, drives lower gangbar 25 to move up and down when gas transmission straight tube 12 is shaken, lower linkage
The motion of bar 25 drives swinging axle 26 to move and then drives two pieces of symmetrically arranged valve plate 28 foldings to swing, and the swing of valve plate 28 is subject to
To restriction and then restriction swinging axle, the motion of lower gangbar of spring 29, the final amplitude of fluctuation controlling gas transmission straight tube 12, can prevent
Only gas transmission straight tube 12 is owing to swinging excessive or the most acutely causing damaging.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (5)
1. operated pneumatic valve, it is characterised in that including:
Gas transmission straight tube, this gas transmission straight tube is the elastic tube that can bend right and left, and this gas transmission straight tube is arranged in gas tube wall, and gas transmission is straight
One end of pipe is connected with the gas transmission mouth of pipe, and the other end of described gas transmission straight tube is connected with valve body, described gas transmission straight tube and the gas transmission mouth of pipe
Between be provided with switch valve, described gas transmission straight tube is fixed on connector by symmetrically arranged two sections of stop collars, described gas transmission straight tube
Stage casing unsettled and be connected with upper gangbar and lower gangbar, the angle between described upper gangbar and lower gangbar and gas transmission straight tube
For 30-60 °, described upper gangbar is connected with pressure joint control portion, and described pressure joint control portion includes extension sleeve, fore-set, auxiliary sleeve
Cylinder and hydraulic cylinder, described lower gangbar is connected with buffer part, and buffer part includes swinging axle and symmetrically arranged two pieces of valve plates, described
Two pieces of valve plates are connected with the sidewall of buffer part by spring respectively, and the axial-movement of described lower gangbar drives swinging axle axis fortune
Dynamic, the axial-movement of swinging axle drives valve plate to limit the open and close movement of valve plate along swinging axle open and close movement, described spring；
Valve body, described valve body is provided with the air chamber being connected with gas transmission straight tube, and described air chamber side is provided with air vent, and described gas transmission is straight
Pipe gos deep in air chamber by a nozzle, just nozzle is being additionally provided with one can closer or far from envelope mouth, described envelope mouth passes through bullet
Property mechanism, motion bar and reciprocating motor connect, described reciprocating motor is arranged on the backboard on rear side of valve body；
Described upper gangbar and lower gangbar are connected with the closure plug on gas transmission straight tube, and described upper gangbar is upper with lower gangbar
Lower motion drives closure plug to control the flow of gas transmission straight tube；
Described reciprocating motor, hydraulic cylinder are connected with motor control room.
Operated pneumatic valve the most according to claim 1, it is characterised in that: described exhaust ports is additionally provided with baroceptor, institute
State the motor control room pressure signal according to baroceptor and controlled the position of first line of a couplet lever by hydraulic cylinder.
Operated pneumatic valve the most according to claim 1, it is characterised in that: described gas transmission straight tube is with valve body by valve converting interface even
Connect, at described valve converting interface, be additionally provided with pipe box part and sealing shroud.
Operated pneumatic valve the most according to claim 1, it is characterised in that: it is provided with noise abatement cushion, institute at the described gas transmission mouth of pipe
State noise abatement cushion to be connected with the gas transmission mouth of pipe by mouth of pipe connector.
Operated pneumatic valve the most according to claim 1, it is characterised in that: described air chamber and air vent part are additionally provided with level 2 buffering
Net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610782758.4A CN106224598B (en) | 2016-08-31 | 2016-08-31 | Operated pneumatic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610782758.4A CN106224598B (en) | 2016-08-31 | 2016-08-31 | Operated pneumatic valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106224598A true CN106224598A (en) | 2016-12-14 |
| CN106224598B CN106224598B (en) | 2018-10-26 |
Family
ID=58071902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610782758.4A Active CN106224598B (en) | 2016-08-31 | 2016-08-31 | Operated pneumatic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106224598B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1082469A (en) * | 1996-09-06 | 1998-03-31 | Mitsubishi Heavy Ind Ltd | High temperature gas cutoff valve |
| CN1434218A (en) * | 2003-02-25 | 2003-08-06 | 吉林大学 | Novel nozzle baffle-plate type servo valve |
| CN202129190U (en) * | 2011-06-23 | 2012-02-01 | 深圳市轴心自控技术有限公司 | Precise injection valve |
| CN204283378U (en) * | 2014-12-01 | 2015-04-22 | 胜利油田瑞特机械制造有限责任公司 | A kind of self feed back injector |
| CN205198779U (en) * | 2015-10-16 | 2016-05-04 | 浙江信达可恩消防实业有限责任公司 | Gaseous promotion formula starter gate valve |
| CN206054823U (en) * | 2016-08-31 | 2017-03-29 | 渤海阀门集团有限公司 | Operated pneumatic valve |
-
2016
- 2016-08-31 CN CN201610782758.4A patent/CN106224598B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1082469A (en) * | 1996-09-06 | 1998-03-31 | Mitsubishi Heavy Ind Ltd | High temperature gas cutoff valve |
| CN1434218A (en) * | 2003-02-25 | 2003-08-06 | 吉林大学 | Novel nozzle baffle-plate type servo valve |
| CN202129190U (en) * | 2011-06-23 | 2012-02-01 | 深圳市轴心自控技术有限公司 | Precise injection valve |
| CN204283378U (en) * | 2014-12-01 | 2015-04-22 | 胜利油田瑞特机械制造有限责任公司 | A kind of self feed back injector |
| CN205198779U (en) * | 2015-10-16 | 2016-05-04 | 浙江信达可恩消防实业有限责任公司 | Gaseous promotion formula starter gate valve |
| CN206054823U (en) * | 2016-08-31 | 2017-03-29 | 渤海阀门集团有限公司 | Operated pneumatic valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106224598B (en) | 2018-10-26 |
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