CN110319212A - Adjustable pressure reduction orifice plate - Google Patents
Adjustable pressure reduction orifice plate Download PDFInfo
- Publication number
- CN110319212A CN110319212A CN201910734959.0A CN201910734959A CN110319212A CN 110319212 A CN110319212 A CN 110319212A CN 201910734959 A CN201910734959 A CN 201910734959A CN 110319212 A CN110319212 A CN 110319212A
- Authority
- CN
- China
- Prior art keywords
- mounting portion
- worm gear
- adjustable
- pressure reduction
- orifice plate
- 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.)
- Pending
Links
- 230000009467 reduction Effects 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000006073 displacement reaction Methods 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims abstract description 10
- 230000008859 change Effects 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims abstract description 4
- 125000006850 spacer group Chemical group 0.000 claims description 11
- 238000012360 testing method Methods 0.000 abstract description 7
- 230000006837 decompression Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 210000004907 gland Anatomy 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 241000237858 Gastropoda Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
- F16K27/045—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members with pivotal obturating 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/0254—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor being operated by particular means
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/029—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with two or more gates
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/04—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members
- F16K3/06—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
-
- 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
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/535—Mechanical actuating means with toothed gearing for rotating 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Transmission (AREA)
Abstract
The invention discloses a kind of adjustable pressure reduction orifice plates, including shell, shell is successively arranged the water entering section of mutual coaxial communication from water inlet end to water outlet, mounting portion and outlet part, the inner diameter of mounting portion is less than the inner diameter of water entering section and outlet part, the side of water entering section and outlet portion is equipped with pressure gauge, mounting portion inner wall is successively arranged the limit circlip for limiting worm gear radial displacement from water inlet end to water outlet, worm gear and adjustable vane, worm gear and adjustable vane are flexibly connected and are flexibly connected with mounting portion, the worm screw for driving worm gear to rotate is additionally provided on mounting portion；Worm gear rotation is driven by rotary worm, worm gear drives adjustable vane one end that radial displacement occurs to change mounting portion inner wall center bore；The present invention has structure simple, easy for installation, is adjusted by worm and gear adjustable vane and changes apopore size, and compatibility test rifle uses, can be accurately controlled outlet pressure, achieve the purpose that pipe decompression.
Description
Technical field
The invention belongs to pipe decompression Element Technology field more particularly to a kind of adjustable pressure reduction orifice plates.
Background technique
Traditional fire_fighting pipe network decompression is all to realize outlet pressure by installing one piece of constant aperture stainless steel plate in the duct
Power control.Aperture is by precalculating, and when calculating pressure reducing orifice aperture, by water-aspirator pressure error, pipeline hydraulic frictional resistance goes out
The factors such as mouth flow error and height influence, and calculating data volume is huge, and objective factor is more, often takes a significant amount of time energy meter
Calculating result and production cannot reach requirement after being installed, and be influenced in use by environment factor, if the later period
Pressure reducing orifice is replaced, it is not only time-consuming and laborious, but also since mounting process limits, it can not also be replaced after being many times installed.
In view of this, the present invention is specifically proposed.
Summary of the invention
Aiming at the problems existing in the prior art, the object of the present invention is to provide a kind of adjustable pressure reduction orifice plate, structure letters
It is single, easy for installation, it is adjusted by worm and gear adjustable vane and changes apopore size, compatibility test rifle uses, can
It is accurately controlled outlet pressure, achievees the purpose that pipe decompression, instead of conventional pressure relief orifice plate for fire_fighting pipe network, aqueduct etc.
Need to install the place of pressure reducing orifice.
To achieve the goals above, a kind of adjustable pressure reduction orifice plate provided by the invention, including shell, the shell from into
Water end (W.E.) to water outlet is successively arranged the water entering section, mounting portion and outlet part of mutual coaxial communication, the inner diameter of the mounting portion
Less than the inner diameter of water entering section and outlet part, the side of the water entering section and outlet portion is equipped with pressure gauge, the mounting portion
Inner wall is successively arranged limit circlip, worm gear and adjustable vane for limiting worm gear radial displacement from water inlet end to water outlet,
The worm gear and adjustable vane are flexibly connected and are flexibly connected with mounting portion, and the adjustable vane is along mounting portion inner wall
Circumferencial direction is uniformly distributed, and the worm screw for driving worm gear to rotate is additionally provided on the mounting portion；Snail is driven by rotary worm
Wheel rotation, worm gear drive adjustable vane one end connected to it that radial displacement occurs to change mounting portion inner wall center bore.
Preferably, the adjustable vane includes several blades being arranged radially along mounting portion, the adjacent leaf
Local stacking between piece, the adjustable vane are uniformly distributed to form annulus along the circumferencial direction of mounting portion inner wall；
Preferably, the blade lower surface is equipped with spacer pin one corresponding with mounting portion close to mounting portion inner wall one end,
Separate mounting portion inner wall one end of the blade upper surface is equipped with spacer pin two corresponding with worm gear sliding slot；
Preferably, the inside horizontal extension in the mounting portion bottom end forms the platform for installing blade, sets on the platform
There is blade mounting hole corresponding with the spacer pin one of blade；
Preferably, the inner wall on the mounting portion top is equipped with the jump-ring slot for installing circlip；
Preferably, the water inlet port of the water entering section and the water outlet port of outlet part are respectively equipped with the outer spiral shell with connecting pipe
The internal screw thread or external screw thread that line or internal screw thread match；
Preferably, described worm screw one end is set in mounting portion and engages with worm gear, and the other end is equipped with rocking handle.
A kind of adjustable pressure reduction orifice plate provided by the invention, has the following beneficial effects:
It is processed present invention effectively prevents conventional pipelines pressure reducing mode elder generation calculated hole diameters and passes through examination after finished product is installed
Verifying is recalculating processing installation test, can generate huge Installation And Test expense, take if generating pressure error
When laborious technical problem, adjustable pressure reduction orifice plate provided by the invention on-line debugging after installation is complete passes through worm and gear
It adjusts the pore size of adjustable vane in a ring and then changes center bore size, can achieve any pressure that design needs
Force value, and any adjusting can change pressure size according to demand in use, and compatibility test rifle uses, it can
It is accurately controlled outlet pressure, avoids manually calculating the pressure error generated.The mounting means of above-mentioned parts uses groove simultaneously
Formula structure can be coupled with existing standard component, applied widely.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of adjustable pressure reduction orifice plate provided by the invention.
Fig. 2 is a kind of side view of adjustable pressure reduction orifice plate provided by the invention.
Fig. 3 is the knot that a kind of center bore of the mounting portion of adjustable pressure reduction orifice plate provided by the invention is in maximum rating
Structure schematic diagram.
Fig. 4 is the knot that a kind of center bore of the mounting portion of adjustable pressure reduction orifice plate provided by the invention is in minimum state
Structure schematic diagram.
In figure:
1. 122. platform of shell 11. water entering section, 12. mounting portion, 121. jump-ring slot, 123. blade mounting hole 13. is discharged
One 52. spacer pin 2 6. of portion's 2. worm gear, 21. sliding slot, 3. worm screw, 4. pressure gauge, 41. table valve, 5. blade, 51. spacer pin pressure
Lid 7. limits 8. pressure gauge mounting hole of circlip.
Specific embodiment
The present invention will be further described with attached drawing combined with specific embodiments below, to help the contents of the present invention are understood.
It as shown in Figs 1-4, is a kind of adjustable pressure reduction orifice plate provided by the invention, including shell 1, shell 1 are cast by spheroidal graphite
Iron monoblock cast, intensity is high, good corrosion resistance.Shell 1 is successively arranged the water inlet of mutual coaxial communication from water inlet end to water outlet
The side of portion 11, mounting portion 12 and outlet part 13, water entering section 11 and outlet portion 13 is equipped with the pressure gauge installation of installation pressure gauge 4
Hole 8, pressure gauge 4 are equipped with table valve 41 and for monitoring ductwork pressure.The water outlet of the water inlet port and outlet part 13 of water entering section 11
Port is respectively equipped with the internal screw thread or external screw thread to match with the external screw thread of connecting pipe or internal screw thread.The inner wall of mounting portion 12 is straight
Diameter is less than the inner diameter of water entering section 11 and outlet part 13, and 12 inner wall of mounting portion is successively arranged from water inlet end to water outlet for limiting
The inner wall of limit circlip 7, worm gear 8 and the adjustable vane of 2 radial displacement of worm gear processed, 12 top of mounting portion is equipped with for installing
The jump-ring slot 121 of circlip 7, worm gear 2 and adjustable vane are flexibly connected and are flexibly connected with mounting portion 12, adjustable vane edge
The circumferencial direction of 12 inner wall of mounting portion is uniformly distributed, and the worm screw 3 for driving worm gear 2 to rotate, worm screw 3 are additionally provided on mounting portion 12
One end is set in mounting portion 12, and the other end is equipped with rocking handle, and the gland 6 being set on worm screw 3 is fixed by screw and shell 1
For limiting 3 radial displacement of screw rod.Worm gear 2 is driven to rotate by rotary worm 3, worm gear 2 drives adjustable vane to be connected thereto
One end radial displacement occur change 12 inner wall center bore of mounting portion.Regulating device is using worm gear 2 and the cooperation knot of worm screw 3
Structure, easy to adjust, self-locking performance is good.
Adjustable vane includes several blades 5 being arranged radially along mounting portion, is locally folded between adjacent blade 5
Add, adjustable vane is made to be uniformly distributed to form annulus along the circumferencial direction of 12 inner wall of mounting portion.Blade 5 using stainless steel integral into
Type, intensity is high, good corrosion resistance.5 lower surface of blade is equipped with limit corresponding with mounting portion 12 close to 12 inner wall one end of mounting portion
12 inner wall one end of separate mounting portion of position pin 1,5 upper surface of blade is equipped with spacer pin two corresponding with 2 sliding slot 21 of worm gear
52.The inside horizontal extension in 12 bottom end of mounting portion forms the platform 122 for installing blade 5, and platform 122 is equipped with and blade 5
The corresponding blade mounting hole 123 of spacer pin 1, i.e. blade mounting hole 123 are uniformly distributed along 122 circumferencial direction of platform.It is adjustable
It saving blade and uses stainless steel integral molding, shape is by optimization design, and using 5 stacked system of more blades, adjustment aperture is smaller,
It is bigger to be superimposed thickness, is not influenced by forefront pressure increase in adjustment process.
Assembling process of the invention: firstly, by adjustable vane be packed into shell 1 mounting portion 12 in, spacer pin 1 with
The blade mounting hole 123 of platform 122 corresponds；Secondly, worm gear 2 is packed into shell, the limit of worm gear 2 sliding slot 21 and blade 5
Pin 2 52 is corresponding, and circlip 7 is packed into jump-ring slot 121；Then, sealing ring is respectively charged into the seal groove of gland 6 and worm screw 2
It is interior；Finally, worm screw 2 to be packed into the mounting portion 12 of shell 1, it is compacted with gland 6, and locked with screw, forward and reverse rotation worm screw 2,
Movable smooth, the no card resistance phenomenon of band movable vane piece 5 is rotated by worm gear 2.The finished product that assembly is completed carries out the water-pressure sealed examination of 3MPa
It tests, pressure stabilizing 5min, ne-leakage phenomenon, comprehensive performance is good.
The working principle of the invention: user's rotary worm 3 rotates, and worm screw 3 drives worm gear 2 to rotate, and the rotation of worm gear 2 drives
Blade 5 is connected thereto one end and radial displacement occurs, and adjusts the aperture for the annulus that adjustable vane is formed, and then change mounting portion 12
Inner wall center bore size is examined with reaching on-line debugging after installation is complete by the pressure gauge 4 of water entering section 11 and outlet part 12
Overpressure is surveyed, then rotary worm 3 drives the pore size of the adjustable vane of the adjustment of worm gear 2 in a ring and then changes centre bore
Diameter size can achieve any pressure value that design needs, and any adjusting can change according to demand in use
Pressure size, and compatibility test rifle uses, and can be accurately controlled outlet pressure, avoids manually calculating the pressure mistake generated
Difference.
Specific case used herein elaborates inventive concept, the explanation of above example is only intended to
Help understands core of the invention thought.It should be pointed out that for those skilled in the art, not departing from this
Under the premise of inventive concept, any obvious modification, equivalent replacement or the other improvements made should be included in the present invention
Protection scope within.
Claims (7)
1. a kind of adjustable pressure reduction orifice plate, which is characterized in that including shell, the shell is successively arranged from water inlet end to water outlet
Water entering section, mounting portion and the outlet part of mutual coaxial communication, the inner diameter of the mounting portion are less than water entering section and outlet part
The side of inner diameter, the water entering section and outlet portion is equipped with pressure gauge, and the mounting portion inner wall is from water inlet end to water outlet
It is successively arranged limit circlip, worm gear and the adjustable vane for limiting worm gear radial displacement, the worm gear and adjustable vane
It is flexibly connected and is flexibly connected with mounting portion, the worm screw for driving worm gear to rotate is additionally provided on the mounting portion；Pass through rotation
Turn worm screw and drive worm gear rotation, the worm gear drives adjustable vane one end connected to it that radial displacement occurs to change installation
Portion's inner wall center bore.
2. a kind of adjustable pressure reduction orifice plate according to claim 1, which is characterized in that the adjustable vane includes several
A blade being arranged radially along mounting portion, local stacking between the adjacent blade, the adjustable vane is along mounting portion
The circumferencial direction of inner wall is uniformly distributed to form annulus.
3. a kind of adjustable pressure reduction orifice plate according to claim 2, which is characterized in that the blade lower surface is close to installation
Portion inner wall one end is equipped with spacer pin one corresponding with mounting portion, and separate mounting portion inner wall one end of the blade upper surface is equipped with
Spacer pin two corresponding with worm gear sliding slot.
4. a kind of adjustable pressure reduction orifice plate according to claim 3, which is characterized in that the mounting portion bottom end is inwardly horizontal
The platform for installing blade is extended to form, the platform is equipped with blade mounting hole corresponding with the spacer pin one of blade.
5. a kind of adjustable pressure reduction orifice plate according to claim 1, which is characterized in that on the inner wall on the mounting portion top
Equipped with the jump-ring slot for installing circlip.
6. a kind of adjustable pressure reduction orifice plate according to claim 1, which is characterized in that the water inlet port of the water entering section and
The water outlet port of outlet part is respectively equipped with the internal screw thread or external screw thread to match with the external screw thread of connecting pipe or internal screw thread.
7. a kind of adjustable pressure reduction orifice plate according to claim 1, which is characterized in that described worm screw one end, which is set to, is pacifying
It is engaged in dress portion and with worm gear, the other end is equipped with rocking handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910734959.0A CN110319212A (en) | 2019-08-09 | 2019-08-09 | Adjustable pressure reduction orifice plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910734959.0A CN110319212A (en) | 2019-08-09 | 2019-08-09 | Adjustable pressure reduction orifice plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110319212A true CN110319212A (en) | 2019-10-11 |
Family
ID=68125850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910734959.0A Pending CN110319212A (en) | 2019-08-09 | 2019-08-09 | Adjustable pressure reduction orifice plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110319212A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111015893A (en) * | 2019-12-28 | 2020-04-17 | 佛山市鼎科科技发展有限公司 | 3D clay printer |
| CN112268122A (en) * | 2020-10-28 | 2021-01-26 | 福建闽山消防有限公司 | High-performance adjustable stepless pressure reducing device and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB607866A (en) * | 1945-05-18 | 1948-09-07 | Anglo Iranian Oil Co Ltd | Improvements relating to valves |
| RU2124114C1 (en) * | 1998-04-15 | 1998-12-27 | Общество с ограниченной ответственностью Фирма "Подземнефтегазсервис" | Device for sealing of well mouth |
| CN203348710U (en) * | 2013-07-09 | 2013-12-18 | 福建海洋铜业有限公司 | Double-protection mechanical valve lock |
| CN204102441U (en) * | 2014-07-14 | 2015-01-14 | 公安消防部队昆明指挥学校 | Fire fighting water system pressure regulates facility teaching demonstration device |
| CN107076317A (en) * | 2014-09-30 | 2017-08-18 | 日本电产科宝株式会社 | Volume control device and vehicle |
| CN107120471A (en) * | 2017-06-04 | 2017-09-01 | 江苏圣迪德智能科技有限公司 | A kind of duplicate protection machinery valve locking device |
| US20170298953A1 (en) * | 2016-04-19 | 2017-10-19 | Honeywell International Inc. | Adjustable-trim centrifugal compressor for a turbocharger |
| CN207975273U (en) * | 2018-03-14 | 2018-10-16 | 嘉兴岱源真空科技有限公司 | A kind of combination throttle valve |
| CN208919365U (en) * | 2018-07-02 | 2019-05-31 | 江苏永胜海洋工程有限公司 | A kind of aperture-type air register |
| CN210344353U (en) * | 2019-08-09 | 2020-04-17 | 成都捷晟制造有限责任公司 | Adjustable pressure reducing orifice plate |
-
2019
- 2019-08-09 CN CN201910734959.0A patent/CN110319212A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB607866A (en) * | 1945-05-18 | 1948-09-07 | Anglo Iranian Oil Co Ltd | Improvements relating to valves |
| RU2124114C1 (en) * | 1998-04-15 | 1998-12-27 | Общество с ограниченной ответственностью Фирма "Подземнефтегазсервис" | Device for sealing of well mouth |
| CN203348710U (en) * | 2013-07-09 | 2013-12-18 | 福建海洋铜业有限公司 | Double-protection mechanical valve lock |
| CN204102441U (en) * | 2014-07-14 | 2015-01-14 | 公安消防部队昆明指挥学校 | Fire fighting water system pressure regulates facility teaching demonstration device |
| CN107076317A (en) * | 2014-09-30 | 2017-08-18 | 日本电产科宝株式会社 | Volume control device and vehicle |
| US20170298953A1 (en) * | 2016-04-19 | 2017-10-19 | Honeywell International Inc. | Adjustable-trim centrifugal compressor for a turbocharger |
| CN107120471A (en) * | 2017-06-04 | 2017-09-01 | 江苏圣迪德智能科技有限公司 | A kind of duplicate protection machinery valve locking device |
| CN207975273U (en) * | 2018-03-14 | 2018-10-16 | 嘉兴岱源真空科技有限公司 | A kind of combination throttle valve |
| CN208919365U (en) * | 2018-07-02 | 2019-05-31 | 江苏永胜海洋工程有限公司 | A kind of aperture-type air register |
| CN210344353U (en) * | 2019-08-09 | 2020-04-17 | 成都捷晟制造有限责任公司 | Adjustable pressure reducing orifice plate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111015893A (en) * | 2019-12-28 | 2020-04-17 | 佛山市鼎科科技发展有限公司 | 3D clay printer |
| CN112268122A (en) * | 2020-10-28 | 2021-01-26 | 福建闽山消防有限公司 | High-performance adjustable stepless pressure reducing device and application thereof |
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