CN105485391B - A kind of pressure reducer - Google Patents
A kind of pressure reducer Download PDFInfo
- Publication number
- CN105485391B CN105485391B CN201511029396.3A CN201511029396A CN105485391B CN 105485391 B CN105485391 B CN 105485391B CN 201511029396 A CN201511029396 A CN 201511029396A CN 105485391 B CN105485391 B CN 105485391B
- Authority
- CN
- China
- Prior art keywords
- pressure
- block
- housing
- column
- diaphragm
- 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.)
- Expired - Fee Related
Links
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 19
- 206010008469 Chest discomfort Diseases 0.000 claims abstract description 24
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 238000004140 cleaning Methods 0.000 claims description 7
- 230000010355 oscillation Effects 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 2
- 239000012535 impurity Substances 0.000 abstract description 8
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 3
- 230000000087 stabilizing effect Effects 0.000 abstract description 3
- 230000007812 deficiency Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007789 sealing Methods 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
- B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
- B01D35/046—Plug, tap, or cock filters filtering elements mounted in or on a faucet the filtering element being mounted in the faucet plug
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The present invention relates to a kind of pressure reducer, solve that pressure reducer of the prior art is simple in construction, the gas pressure of output fluctuates larger deficiency.A kind of pressure reducer provided by the invention, inlet air filtration net is provided with air inlet, outlet screen pack is provided with gas outlet, inlet air filtration net, outlet screen pack play a part of filtering air-flow, avoid the impurity in air-flow that the impurity in air-flow can also be avoided to block pipeline while blocking pressure-reducing valve, optimize the performance of pressure-reducing valve；The compensation block that can be slided is provided with spacing block, compensation block can compensate the air pressure fluctuation in high pressure chest, because compensation block can slide in receiving hole, the movement of compensation block changes the size of high pressure chest volume, so as to play a part of compensating high pressure chest interior air-flow pressure, in addition, spring matching film plate can also play a part of stabilizing low voltage intracavitary stream pressure, it ensure that gas outlet stream pressure is constant, optimize the performance of pressure-reducing valve.
Description
Technical field
The present invention relates to valve field, more particularly to a kind of pressure reducer.
Background technology
In the prior art, because the gas pressure in the bottle is higher, and gas pressure required for gas site of deployment it is relatively low, it is necessary to
Used after the gas for being stored in elevated pressures in gas cylinder is depressured with pressure reducer, and should ensure that the operating pressure of required gas from beginning
To holding stable state eventually.
With the rapid development of the industries such as China's medical treatment, space flight, laboratory, occasion is conveyed to the steady of gas pressure in gas
Qualitative requirement more and more higher；And the pressure reducer in the prior art for gas delivery art is simple in construction, pressure when gas exports
Fluctuate larger；In addition, pressure reducer of the prior art does not have filtering function, the impurity being mixed in gas easily causes pipeline
Block, use is inconvenient.
The content of the invention
A kind of pressure reducer provided by the invention, it is intended to overcome pressure reducer of the prior art simple in construction, the gas of output
The larger deficiency of pressure oscillation.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme that：A kind of pressure reducer, including with inner chamber
Housing, it is provided with the housing and inner chamber is divided into high pressure chest and the spacing block of low pressure chamber, the cross-sectional area of the low pressure chamber
More than the cross-sectional area of high pressure chest, air inlet and gas outlet are additionally provided with the housing, the air inlet communicates with high pressure chest,
The gas outlet communicates with low pressure chamber, is provided with inlet air filtration net in the air inlet, outlet screen pack is provided with the gas outlet,
Pipe cleaning valve is also associated with the gas outlet；The adjusting handle of gas pressure in regulation low pressure chamber, institute are provided with the housing
State adjusting handle and be provided with the accommodating chamber for accommodating housing, offer internal thread in the side wall of the accommodating chamber, opened on the housing
Provided with the external screw thread with screw-internal thread fit in accommodating chamber side wall, the adjusting handle is provided with column, is provided with the housing
The diaphragm of spacing block is controlled, the column is provided with spring, institute between adjusting handle and diaphragm between the column and diaphragm
The fixed seat that column lower end is fixed with fixed spring is stated, the lead being oriented to spring, institute are provided with the fixed seat
State spring to be set on lead, for the diaphragm between spring and spacing block, the spacing block passes through connector with diaphragm
It is fixedly connected, the compensation block of pressure oscillation in compensation high pressure chest is provided with the spacing block, appearance is offered on the spacing block
Receive compensation block and the receiving hole that slides compensation block, the receiving hole is communicated with high pressure chest, also set on the spacing block
There is connecting pole, the connecting pole is located in receiving hole, and the connecting pole and receiving hole are coaxial, and the compensation block is slidably connected
On connecting pole, the connecting pole lower end is connected through a screw thread the limited block for avoiding compensation block from skidding off connecting pole.
Inlet air filtration net is set in above-mentioned composition, in air inlet, outlet screen pack is set in gas outlet, inlet air filtration net with
Outlet screen pack can filter to gas, and the impurity avoided in gas blocks pipeline；Mended in addition, being set in spacing block
Repay block, when larger fluctuation occurs in the air-flow in high pressure chest, because compensation block can play certain compensating action, greatly optimize
The stability of gas outlet stream pressure, and the setting of spring can also compensate the fluctuation of high pressure chest interior air-flow pressure, it is significantly excellent
The stability of gas outlet stream pressure is changed；And gas outlet is connected with pipe cleaning valve, pipe cleaning valve plays a part of clearing up pipeline, avoids
Impurity in air-flow blocks pipeline.
A kind of optional scheme, the adjusting handle are connected together with column, and the adjusting handle is provided with cross section
The fixture block of circle is shaped as, the neck coordinated with fixture block is offered on the column, the fixture block and adjusting handle are integral type
Structure.Adjusting handle is connected together with column, and column is positioned using spring, simplifies the manufacturing process of adjusting handle,
Reduce the manufacturing cost of pressure-reducing valve；Fixture block is set on adjusting handle, and neck is set on column, improves adjusting handle
With the efficiency of assembling of column.
A kind of optional scheme, the projection of fixed spring is fixed with the diaphragm, the spring is set on projection, institute
It is integral type structure that projection, which is stated, with diaphragm.Projection is set on diaphragm, and projection also acts as to enter spring while fixed spring
The effect that row is oriented to, extend the service life of spring.
A kind of optional scheme, the spacing block are provided with convex shoulder, and the inwall of the housing, which is provided with, accommodates lacking for convex shoulder
Mouthful.Convex shoulder coordinates with breach, optimizes the performance of pressure-reducing valve.
A kind of optional scheme, the fixed seat are together by a threaded connection with column.It is easy to the assembling of pressure-reducing valve, carries
The high production efficiency of pressure-reducing valve.
Compared with prior art, a kind of pressure reducer provided by the invention, has the following advantages that：Air inlet is provided with air inlet
Screen pack, outlet screen pack is provided with gas outlet, inlet air filtration net, outlet screen pack play the work filtered to air-flow
With avoiding the impurity in air-flow from while blocking pressure-reducing valve impurity in air-flow can also being avoided to block pipeline, optimizing and subtract
The performance of pressure valve；The compensation block that can be slided is provided with spacing block, compensation block can compensate the air pressure fluctuation in high pressure chest,
Because compensation block can slide in receiving hole, the movement of compensation block changes the size of high pressure chest volume, so as to play compensation
The effect of high pressure chest interior air-flow pressure, in addition, spring matching film plate can also play a part of stabilizing low voltage intracavitary stream pressure,
It ensure that gas outlet stream pressure is constant, optimize the performance of pressure-reducing valve；It is miscellaneous that the pipe cleaning valve being connected on gas outlet plays cleaning
The effect of matter, the performance of pressure-reducing valve is further optimized, avoid the impurity in air-flow from blocking pipeline.
Brief description of the drawings
Accompanying drawing 1 is a kind of front view of pressure reducer of the present invention.
Embodiment
Below in conjunction with the accompanying drawings, a kind of pressure reducer of the present invention is described further.As shown in figure 1, a kind of pressure reducer, bag
The housing 1 with inner chamber is included, for the ease of assembling, the housing 1 can assemble shapes by some sections, and pipe can be used between each section
Screw thread is attached, and to improve the sealing property of housing 1, is provided with the housing 1 inner chamber being divided into high pressure chest 4 and low pressure chamber
3 spacing block 2, the cross-sectional area of the low pressure chamber 3 are more than the cross-sectional area of high pressure chest 4, that is to say, that housing 1 it is interior
There is step on wall；
Referring to Fig. 1, the spacing block 2 is provided with convex shoulder 25, and the inwall of the housing 1, which is provided with, accommodates lacking for convex shoulder 25
Mouthful, to improve the isolation performance of spacing block 2；
Referring to Fig. 1, air inlet 5 and gas outlet 6 are additionally provided with the housing 1, the air inlet 5 communicates with high pressure chest 4, institute
State gas outlet 6 to communicate with low pressure chamber 3, inlet air filtration net 7 is provided with the air inlet 5, being provided with outlet in the gas outlet 6 filters
Net 8, inlet air filtration net 7 and outlet screen pack 8 are screen pack of the prior art, and pigging is also associated with the gas outlet 6
Valve 9, pipe cleaning valve 9 are also the valve for being used to clear up pipeline in the prior art；
Referring to Fig. 1, the adjusting handle 10 of gas pressure in regulation low pressure chamber 3, adjusting handle 10 are provided with the housing 1
The tubular structure of upper end closed is should be, the adjusting handle 10 is provided with the accommodating chamber 11 for accommodating housing 1, the accommodating chamber 11
Internal thread is offered in side wall, the external screw thread with screw-internal thread fit in the side wall of accommodating chamber 11, the tune are offered on the housing 1
Section handwheel 10 is provided with column 12, and the external screw thread on internal thread and housing 1 on adjusting handle 10 should have certain height
Degree, so that adjusting handle 10 can promote column 12 to move a segment distance, realize the mesh that the pressure of spring 14 is adjusted by column 12
, the adjusting handle 10 is connected together with column 12, and the adjusting handle 10 is provided with shape of cross section as circular card
Block 22, the neck 23 coordinated with fixture block 22 is offered on the column 12, the fixture block 22 and adjusting handle 10 are integral type knot
Structure；
Referring to Fig. 1, be provided with the diaphragm 13 of control spacing block 2 in housing 1, the column 12 be located at adjusting handle 10 and
Between diaphragm 13, spring 14 is provided between the column 12 and diaphragm 13, the convex of fixed spring 14 is fixed with the diaphragm 13
Block 24, the spring 14 are set on projection 24, and the projection 24 and diaphragm 13 are integral type structure, and the lower end of column 12 is consolidated
Surely there is the fixed seat 15 of fixed spring 14, the fixed seat 15 is together by a threaded connection with column 12, the fixed seat 15
On be provided with the lead 16 being oriented to spring 14, lead 16 and fixed seat 15 are integral type structure, the spring 14
It is set on lead 16, is promoted when column 12 moves down by adjusting handle 10, spring 14 is relied on when column 12 moves up
Thrust move up, therefore, the lower end of spring 14 can be fixedly connected with diaphragm 13, and the lower end of spring 14 can not also be with diaphragm
13 are fixedly connected, it is only necessary to are contacted with diaphragm 13；
Referring to Fig. 1, between spring 14 and spacing block 2, the spacing block 2 passes through with diaphragm 13 to be connected the diaphragm 13
Body 17 is fixedly connected, and connector 17 can be fixed between diaphragm 13 and spacing block 2 by bonding way, on the spacing block 2
The compensation block 18 of pressure oscillation in compensation high pressure chest 4 is provided with, receiving compensation block 18 is offered on the spacing block 2 and makes benefit
The receiving hole 19 that block 18 can slide is repaid, the receiving hole 19 is communicated with high pressure chest 4, and connecting pole is additionally provided with the spacing block 2
20, the connecting pole 20 is located in receiving hole 19, and connecting pole 20 and spacing block 2 are integral type structure, and the connecting pole 20
Coaxial with receiving hole 19, the compensation block 18 is slidably connected on connecting pole 20, and the lower end of connecting pole 20 is connected through a screw thread
There is the limited block 21 for avoiding compensation block 18 from skidding off connecting pole 20.
When it is implemented, because compensation block 18 can slide in receiving hole 19, the movement of compensation block 18 changes high pressure
The size of the volume of chamber 4, so as to play a part of compensating the interior air-flow pressure of high pressure chest 4, and then ensure the stream pressure at gas outlet 6
It is constant, in addition, the matching film plate 13 of spring 14 can also play a part of the interior air-flow pressure of stabilizing low voltage chamber 3, optimize pressure-reducing valve
Performance.
It these are only the preferred embodiment of the present invention, it is intended to embody the protrusion technique effect and advantage of the present invention, not
It is the limitation to technical scheme.Those skilled in the art will appreciate that all are based on the technology of the present invention content
Modification, change or the substitute technology feature made, it should all be covered by the technology category that appended claims of the present invention are advocated
It is interior.
Claims (3)
1. a kind of pressure reducer, including the housing (1) with inner chamber, it is characterised in that：It is provided with inner chamber point in the housing (1)
For high pressure chest (4) and the spacing block (2) of low pressure chamber (3), the cross-sectional area of the low pressure chamber (3) is more than the horizontal stroke of high pressure chest (4)
Area of section, air inlet (5) and gas outlet (6), the air inlet (5) and high pressure chest (4) phase are additionally provided with the housing (1)
Logical, the gas outlet (6) is communicated with low pressure chamber (3), and inlet air filtration net (7), the gas outlet are provided with the air inlet (5)
(6) outlet screen pack (8) is provided with, pipe cleaning valve (9) is also associated with the gas outlet (6)；Tune is provided with the housing (1)
The adjusting handle (10) of low pressure chamber (3) interior gas pressure is saved, the adjusting handle (10) is provided with the accommodating chamber for accommodating housing (1)
(11) internal thread, is offered in the side wall of the accommodating chamber (11), offered on the housing (1) with accommodating chamber (11) side wall on
The external screw thread of screw-internal thread fit, the adjusting handle (10) are provided with column (12), and control isolation is provided with the housing (1)
The diaphragm (13) of block (2), the column (12) are located between adjusting handle (10) and diaphragm (13), the column (12) and diaphragm
(13) spring (14) is provided between, column (12) lower end is fixed with the fixed seat (15) of fixed spring (14), the fixation
The lead (16) being oriented to spring (14) is provided with seat (15), the spring (14) is set on lead (16),
The diaphragm (13) is located between spring (14) and spacing block (2), and the spacing block (2) passes through connector (17) with diaphragm (13)
It is fixedly connected, the compensation block (18) of compensation high pressure chest (4) interior pressure oscillation, the spacing block is provided with the spacing block (2)
(2) offered on and accommodate compensation block (18) and the receiving hole (19) for making compensation block (18) to slide, the receiving hole (19)
Communicated with high pressure chest (4), connecting pole (20) is additionally provided with the spacing block (2), the connecting pole (20) is located at receiving hole (19)
It is interior, and the connecting pole (20) and receiving hole (19) are coaxially, and the compensation block (18) is slidably connected on connecting pole (20), institute
State connecting pole (20) lower end and be connected through a screw thread the limited block (21) for avoiding compensation block (18) from skidding off connecting pole (20)；
The adjusting handle (10) is connected together with column (12), and the adjusting handle (10) is provided with shape of cross section as circle
The fixture block (22) of shape, the neck (23) coordinated with fixture block (22), the fixture block (22) and regulation are offered on the column (12)
Handwheel (10) is integral type structure；
The projection (24) of fixed spring (14) is fixed with the diaphragm (13), the spring (14) is set on projection (24),
The projection (24) and diaphragm (13) are integral type structure.
A kind of 2. pressure reducer according to claim 1, it is characterised in that：The spacing block (2) is provided with convex shoulder (25), institute
The inwall for stating housing (1) is provided with the breach for accommodating convex shoulder (25).
A kind of 3. pressure reducer according to claim 1 or 2, it is characterised in that：The fixed seat (15) is logical with column (12)
Cross and be threaded togather.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511029396.3A CN105485391B (en) | 2015-12-31 | 2015-12-31 | A kind of pressure reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511029396.3A CN105485391B (en) | 2015-12-31 | 2015-12-31 | A kind of pressure reducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105485391A CN105485391A (en) | 2016-04-13 |
| CN105485391B true CN105485391B (en) | 2017-11-24 |
Family
ID=55672566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511029396.3A Expired - Fee Related CN105485391B (en) | 2015-12-31 | 2015-12-31 | A kind of pressure reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105485391B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339100B (en) * | 2017-08-23 | 2020-07-31 | 湖北弘华长技机电有限公司 | Pipeline joint convenient for sampling in oil exploitation |
| CN109268550A (en) * | 2018-09-14 | 2019-01-25 | 宁波铭匠扎啤设备有限公司 | A kind of adjustable compression release valve for beer on draft preservation drum |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1431562A (en) * | 1973-02-05 | 1976-04-07 | Martonair Ltd | Adjustable fluid pressure regulator |
| JPS5837376A (en) * | 1981-08-31 | 1983-03-04 | Akira Sasaki | Thermo responsive pressure control valve |
| CN2382919Y (en) * | 1999-07-30 | 2000-06-14 | 北京天箭星机电技术有限公司 | Constant flow regulating valve |
| CN202074090U (en) * | 2011-06-10 | 2011-12-14 | 大连派思燃气系统股份有限公司 | Pressure regulator |
| CN202327282U (en) * | 2011-12-06 | 2012-07-11 | 成都安美科机电有限公司 | Large-flow and high-pressure air pressure reducer |
| CN104565390A (en) * | 2014-12-30 | 2015-04-29 | 平湖市瑞阳精密机械有限公司 | Special gas pressure reducer |
| CN205244526U (en) * | 2015-12-31 | 2016-05-18 | 平湖市瑞阳精密机械有限公司 | Pressure reducer |
-
2015
- 2015-12-31 CN CN201511029396.3A patent/CN105485391B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN105485391A (en) | 2016-04-13 |
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| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Ultra-low temperature measurement system and method for deflation testes of decompressor Effective date of registration: 20180803 Granted publication date: 20171124 Pledgee: Zhejiang Pinghu Rural Commercial Bank Co.,Ltd. Xindai sub branch Pledgor: PINGHU RUIYANG PRECISION MACHINERY Co.,Ltd. Registration number: 2018990000644 |
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Date of cancellation: 20190719 Granted publication date: 20171124 Pledgee: Zhejiang Pinghu Rural Commercial Bank Co.,Ltd. Xindai sub branch Pledgor: PINGHU RUIYANG PRECISION MACHINERY Co.,Ltd. Registration number: 2018990000644 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Ultra-low temperature measurement system and method for deflation testes of decompressor Effective date of registration: 20190722 Granted publication date: 20171124 Pledgee: Zhejiang Pinghu Rural Commercial Bank Co.,Ltd. Xindai sub branch Pledgor: PINGHU RUIYANG PRECISION MACHINERY Co.,Ltd. Registration number: 2019330000201 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
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Date of cancellation: 20201109 Granted publication date: 20171124 Pledgee: Zhejiang Pinghu Rural Commercial Bank Co.,Ltd. Xindai sub branch Pledgor: PINGHU RUIYANG PRECISION MACHINERY Co.,Ltd. Registration number: 2019330000201 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Pressure reducer Effective date of registration: 20210916 Granted publication date: 20171124 Pledgee: Zhejiang Pinghu Rural Commercial Bank Co.,Ltd. Xindai sub branch Pledgor: PINGHU RUIYANG PRECISION MACHINERY Co.,Ltd. Registration number: Y2021330001648 |
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Date of cancellation: 20230328 Granted publication date: 20171124 Pledgee: Zhejiang Pinghu Rural Commercial Bank Co.,Ltd. Xindai sub branch Pledgor: PINGHU RUIYANG PRECISION MACHINERY Co.,Ltd. Registration number: Y2021330001648 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20171124 |