CN106523748A - Quick-closed power station safety valve - Google Patents
Quick-closed power station safety valve Download PDFInfo
- Publication number
- CN106523748A CN106523748A CN201611087911.8A CN201611087911A CN106523748A CN 106523748 A CN106523748 A CN 106523748A CN 201611087911 A CN201611087911 A CN 201611087911A CN 106523748 A CN106523748 A CN 106523748A
- Authority
- CN
- China
- Prior art keywords
- valve
- seat
- radiator
- quick
- rod
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 abstract 1
- 238000011056 performance test Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000005242 cardiac chamber Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process 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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0486—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with mechanical actuating 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0413—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of closure plates
-
- 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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention proposes a quick-closed power station safety valve. The quick-closed power station safety valve comprises a valve cover, a valve rod, a valve base, a valve body and a radiator; a guide sleeve is arranged in the valve body; the valve cover is provided with a sealing sleeve and a first return spring; a quick closing device is arranged at the upper end of the valve cover, and includes a shell, an ejector rod, a second return spring and a lever; an air release cavity is between the valve cover and the radiator, and is communicated with a discharge pipe; and an outlet of the discharge pipe is positioned below a pressure bearing plate at one end of the lever. The quick-closed power station safety valve is simple in structure and reasonable in design, uses the steam impulsive force generated in discharge of the safety valve for quickly closing the safety valve by the lever principle to reach the opening/closing pressure difference accordant with the requirements, meanwhile, puts a return base pressure adjusting method out of the valve to achieve convenience to debug, and in particular, can show the debugging superiority when performing cold-state all-performance test for newly designed products.
Description
Technical field
The present invention relates to a kind of power plant safety valve, the power plant safety valve of particularly a kind of quick closedown.
Background technology
Power plant is, as the power for generating electricity, therefore station boiler to be matched somebody with somebody with the high temperature and high pressure steam medium of station boiler output
Closing presure (blow pressure) after the relief valve discharge of set has strict requirements.Blow pressure is too low, can be to system operation band
Carry out very big trouble, open and return the Opening pressure value of seat differential pressure requirements≤4% both at home and abroad about standard to relief valve.
For reaching this requirement, domestic each relief valve maker mostly adopts foreign well-known enterprise such as Crosby in the design,
The advanced configuration of the products such as Consolidated, nonetheless, or hardly consistent with requiring.
The content of the invention
For the problems referred to above, the present invention proposes a kind of power plant safety valve of quick closedown.
For solving above technical problem, the technical scheme that the present invention is provided is:
The power plant safety valve of a kind of quick closedown, it is characterised in that including valve gap, valve rod, valve seat, valve body and radiator, described
Bolt is fixedly connected from top to bottom successively with valve body for valve gap, radiator, and the valve body includes material inlet and material outlet, described
Material inlet and material outlet it is axially vertical, the valve seat is arranged at material outlet, and is welded and fixed, and valve seat upper end is in circle
Cylindricality, is cased with lower adjusting ring on the outer wall of its cylinder for being in, and is provided with fairlead in valve body, and the upper end of valve body is provided with annular and sets
The the first stepped limited block put, it is stepped second spacing that the upper periphery of the fairlead is provided with annular setting
Block, is cased with adjusting ring, first limited block and the second limited block corresponding matching on the outer wall of fairlead, fairlead is by dissipating
Hot device and valve body are gripped；
Sealing shroud is provided with the top of the valve gap, valve rod is vertically arranged, sequentially pass through sealing shroud, valve gap, radiator from top to bottom,
And insert in valve body, the lower end of valve rod is fixed with flap, the flap and valve seat corresponding matching, on valve rod from top to bottom successively
Be fixed with fixed seat and seal receptacle, the fixed seating between valve gap, radiator, the seal receptacle be arranged at radiator,
Between valve body, (the first back-moving spring, upper spring seat and lower spring cup in valve gap, is provided with, the upper spring seat is matched somebody with somebody with valve lever clearance
Close, positioned by bolt, the lower spring cup is located at immediately below upper spring seat, and coordinate with valve lever clearance, lower spring cup
Lower end be close to fixed seat, the (the first back-moving spring is placed on valve rod, and between upper spring seat and lower spring cup, first is multiple
The two ends of position spring are pressed on upper spring seat and lower spring cup respectively；
The upper end of the valve gap is provided with quick-acting closure, and the quick-acting closure includes housing, push rod, second back-moving spring
And lever, the lower end of the push rod is connected with the top of valve rod, and its upper end passes through housing, the second back-moving spring to be enclosed within push rod
On, its two ends is mortgaged on valve rod and housing respectively, is hinged at the top of one end of the lever and push rod, its intermediate part and housing
It is hinged, the lever other end is provided with bearing plate, is chamber of losing heart between the valve gap and radiator, the disappointing chamber connects delivery pipe,
The delivery pipe is vertically arranged, and delivery pipe exit is located at below bearing plate；
The first locating piece is fixed with the housing, and the first locating piece is run through in the valve rod upper end, and between the first locating piece
Gap coordinates, and is provided with the second locating piece in annular, second locating piece and the first locating piece corresponding matching at the top of valve rod；
Further, the bolt is arranged at valve gap side；
Further, the exit of the delivery pipe is provided with adjusting screw；
Further, the axis of the valve rod, flap, valve seat and material outlet is same straight line.
Operation principle of the present invention：
1st, relief valve normal work, flap are in the closed position, and steam pressure is less than Opening pressure.
2nd, when steam pressure reaches Opening pressure（Such as 4.92MPa）When, flap initially moves off the sealing surface of valve seat, works as pressure
When reaching maximum pressure（Such as 5.0676Mpa）, flap lift to maximum height, drivening piece push rod is lifted valve rod simultaneously, so that
Lever rotation, and then bearing plate is horizontal and the exit just to delivery pipe, valve reaches maximum pump discharge.Now let out
The some vapor medium put is gone in delivery pipe by the disappointing chambers of fairlead medial gap Jing, and the steam Jing mouths of pipe are flung under bearing plate
Face, rapidly by lever rotation and lower promotion push rod, band ovable valve stem falls after rise rapidly, forces flap to return on the sealing surface of valve seat, enter
Row closes sealing.
The outlet of steam Jing delivery pipes flings the size of bearing plate pressure below, can adjust steam flow by adjusting screw
Size and change, though second back-moving spring rigidity is little, also function to help push rod fall after rise effect.
Beneficial effects of the present invention are：
A kind of power plant safety valve of quick closedown proposed by the present invention, including valve gap, valve rod, valve seat, valve body and radiator, valve body
Fairlead is provided with inside, valve gap is provided with sealing shroud and (the first back-moving spring, and the upper end of valve gap is provided with quick-acting closure, quickly closes
Attach together and put including housing, push rod, second back-moving spring and lever, be chamber of losing heart between valve gap and radiator, lose heart chamber connection row
Pipe is put, delivery pipe exit is located at below the bearing plate of lever one end, and present configuration is simple, reasonable in design, using relief valve
Steam impulse force during discharge, makes relief valve quick closedown with lever principle, so as to reach satisfactory blowdown of a safety valve, together
When, the means for adjusting blow pressure are placed on outside valve, debugging is convenient, especially makees the full performance examination of cold conditions to newly-designed product
When testing, the superiority of debugging can be more protruded.
Description of the drawings
Fig. 1 schematic diagrams of the present invention.
Fig. 2 full doses of the present invention discharge schematic diagram.
Specific embodiment
A kind of power plant safety valve of quick closedown as depicted, it is characterised in that including valve gap 1, valve rod 2, valve seat 3,
Valve body 4 and radiator 5, bolt is fixedly connected from top to bottom successively with valve body 4 for the valve gap 1, radiator 5, and the valve body 4 includes
Material inlet 6 and material outlet 7, the material inlet 6 and material outlet 7 it is axially vertical, the valve seat 3 is arranged at material and goes out
At mouth 7, and it is welded and fixed, 3 upper end of valve seat is cased with lower adjusting ring 8, valve body 4 in cylinder on the outer wall of its cylinder for being in
Inside be provided with fairlead 9, the upper end of valve body 4 is provided with the first stepped limited block 10 of annular setting, the fairlead 9 it is upper
End periphery is provided with the second stepped limited block 11 of annular setting, is cased with adjusting ring 12 on the outer wall of fairlead 9, described
11 corresponding matching of first limited block 10 and the second limited block, fairlead 9 passes through radiator 5 and valve body 4 is gripped；
The top of the valve gap 1 is provided with sealing shroud 13, and valve rod 2 is vertically arranged, sequentially pass through from top to bottom sealing shroud 13, valve gap 1,
Radiator 5, and insert in valve body 4, the lower end of valve rod 2 is fixed with flap 14, the flap 14 and 3 corresponding matching of valve seat, valve
Be fixed with fixed seat 15 and seal receptacle 16 on bar 2 from top to bottom successively, the fixed seat 15 be located at valve gap 1, radiator 5 it
Between, the seal receptacle 16 is arranged between radiator 5, valve body 4, is provided with (the first back-moving spring 17,18 and of upper spring seat in valve gap 1
Lower spring cup 19, the upper spring seat 18 are coordinated with 2 gap of valve rod, are positioned by bolt 20, the lower spring cup 19
Immediately below upper spring seat 18, and coordinate with 2 gap of valve rod, fixed seat 15 is close in the lower end of lower spring cup 19, and described first is multiple
Position spring 17 is placed on valve rod 2, and between upper spring seat 18 and lower spring cup 19, the two ends of (the first back-moving spring 17 are supported respectively
It is pressed on upper spring seat 18 and lower spring cup 19；
The upper end of the valve gap 1 is provided with quick-acting closure, and the quick-acting closure includes that housing 21, push rod 22, second are multiple
Position spring 23 and lever 24, the lower end of the push rod 22 are connected with the top of valve rod 2, its upper end through housing 21, described second
Back-moving spring 23 is enclosed within push rod 22, and its two ends is mortgaged on valve rod 2 and housing 21 respectively, one end of the lever 24 and push rod
22 top is hinged, and is hinged with housing 21 in the middle part of lever 24, and 24 other end of lever is provided with bearing plate 25, the valve gap 1 and radiating
It is chamber 26 of losing heart between device 5, the connection of disappointing chamber 26 delivery pipe 27, the delivery pipe 27 are vertically arranged, and delivery pipe 27 is exported
Place is below bearing plate 25；
The first locating piece 28 is fixed with the housing 21, and the first locating piece 28 is run through in 2 upper end of the valve rod, and fixed with first
Position 28 gap of block coordinates, and the top of valve rod 2 is provided with the second locating piece 29 in annular, and second locating piece 29 and first is fixed
Position 28 corresponding matching of block；
Further, the bolt 20 is arranged at 1 side of valve gap；
Further, the exit of the delivery pipe 27 is provided with adjusting screw 30；
Further, the axis of the valve rod 2, flap 14, valve seat 3 and material outlet 7 is same straight line.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
Should all cover within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection domain of claims
It is defined.
Claims (4)
1. the power plant safety valve of a kind of quick closedown, it is characterised in that including valve gap, valve rod, valve seat, valve body and radiator, institute
Bolt is fixedly connected from top to bottom successively with valve body to state valve gap, radiator, and the valve body includes material inlet and material outlet, institute
The axially vertical of material inlet and material outlet is stated, the valve seat is arranged at material outlet, and is welded and fixed, and valve seat upper end is in
Cylinder, is cased with lower adjusting ring on the outer wall of its cylinder for being in, and is provided with fairlead in valve body, and the upper end of valve body is provided with annular
The the first stepped limited block for arranging, the upper periphery of the fairlead are provided with the second stepped limit of annular setting
Position block, is cased with adjusting ring, first limited block and the second limited block corresponding matching on the outer wall of fairlead, fairlead passes through
Radiator and valve body are gripped；
Sealing shroud is provided with the top of the valve gap, valve rod is vertically arranged, sequentially pass through sealing shroud, valve gap, radiator from top to bottom,
And insert in valve body, the lower end of valve rod is fixed with flap, the flap and valve seat corresponding matching, on valve rod from top to bottom successively
Be fixed with fixed seat and seal receptacle, the fixed seating between valve gap, radiator, the seal receptacle be arranged at radiator,
Between valve body, (the first back-moving spring, upper spring seat and lower spring cup in valve gap, is provided with, the upper spring seat is matched somebody with somebody with valve lever clearance
Close, positioned by bolt, the lower spring cup is located at immediately below upper spring seat, and coordinate with valve lever clearance, lower spring cup
Lower end be close to fixed seat, the (the first back-moving spring is placed on valve rod, and between upper spring seat and lower spring cup, first is multiple
The two ends of position spring are pressed on upper spring seat and lower spring cup respectively；
The upper end of the valve gap is provided with quick-acting closure, and the quick-acting closure includes housing, push rod, second back-moving spring
And lever, the lower end of the push rod is connected with the top of valve rod, and its upper end passes through housing, the second back-moving spring to be enclosed within push rod
On, its two ends is mortgaged on valve rod and housing respectively, is hinged at the top of one end of the lever and push rod, its intermediate part and housing
It is hinged, the lever other end is provided with bearing plate, is chamber of losing heart between the valve gap and radiator, the disappointing chamber connects delivery pipe,
The delivery pipe is vertically arranged, and delivery pipe exit is located at below bearing plate；
The first locating piece is fixed with the housing, and the first locating piece is run through in the valve rod upper end, and between the first locating piece
Gap coordinates, and is provided with the second locating piece in annular, second locating piece and the first locating piece corresponding matching at the top of valve rod.
2. the power plant safety valve of a kind of quick closedown as claimed in claim 1, it is characterised in that the bolt is arranged at
Valve gap side.
3. a kind of power plant safety valve of quick closedown as claimed in claim 1, it is characterised in that the exit of the delivery pipe
It is provided with adjusting screw.
4. the power plant safety valve of a kind of quick closedown as claimed in claim 1, it is characterised in that the valve rod, flap, valve seat
Axis with material outlet is same straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611087911.8A CN106523748B (en) | 2016-12-01 | 2016-12-01 | Power station relief valve of quick closing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611087911.8A CN106523748B (en) | 2016-12-01 | 2016-12-01 | Power station relief valve of quick closing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106523748A true CN106523748A (en) | 2017-03-22 |
| CN106523748B CN106523748B (en) | 2024-04-02 |
Family
ID=58354470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611087911.8A Active CN106523748B (en) | 2016-12-01 | 2016-12-01 | Power station relief valve of quick closing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106523748B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504237A (en) * | 2017-09-25 | 2017-12-22 | 泰州市博圣机械配件厂 | A kind of special automatic quick lever valve arrangement peculiar to vessel |
| CN109854559A (en) * | 2018-12-07 | 2019-06-07 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of parallel spring safety valve of low frequency response |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB193191A (en) * | 1921-12-09 | 1923-02-22 | John Beardsell Broadhead | Improvements in relief valves |
| US4545562A (en) * | 1982-07-01 | 1985-10-08 | Framatome & Cie | Device for elimination of vibrations of a valve for decompression of an enclosure |
| CN86210041U (en) * | 1986-12-08 | 1987-12-05 | 赵兆云 | Double-action safety steam valve |
| US4757839A (en) * | 1986-10-14 | 1988-07-19 | Marchal Francis V | High pressure relief valve |
| JPH08121626A (en) * | 1994-10-18 | 1996-05-17 | Toshiba Corp | Main steam relief safety valve |
| CN1214428A (en) * | 1997-10-13 | 1999-04-21 | 赵文轩 | Leakless safety valve |
| KR20090128124A (en) * | 2008-06-10 | 2009-12-15 | 주식회사 큐리프 | Device for discharging steam and unmanned cooking device with the same |
| KR20140054839A (en) * | 2012-10-30 | 2014-05-09 | 주식회사 탑세이프 | High velocity pressure valve |
| CN203784393U (en) * | 2014-04-30 | 2014-08-20 | 左萌 | Pilot-operated type automatic fluid infusion breather valve |
| CN204062052U (en) * | 2014-08-21 | 2014-12-31 | 上海阀门厂有限公司 | A kind of reheater safety valve |
| CN104455659A (en) * | 2014-12-08 | 2015-03-25 | 章华 | Top steam exhaust electromagnetic pressure relief valve for main steam system of power station |
| CN206361212U (en) * | 2016-12-01 | 2017-07-28 | 扬中市阀门厂有限公司 | A kind of power plant safety valve of quick closedown |
-
2016
- 2016-12-01 CN CN201611087911.8A patent/CN106523748B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB193191A (en) * | 1921-12-09 | 1923-02-22 | John Beardsell Broadhead | Improvements in relief valves |
| US4545562A (en) * | 1982-07-01 | 1985-10-08 | Framatome & Cie | Device for elimination of vibrations of a valve for decompression of an enclosure |
| US4757839A (en) * | 1986-10-14 | 1988-07-19 | Marchal Francis V | High pressure relief valve |
| CN86210041U (en) * | 1986-12-08 | 1987-12-05 | 赵兆云 | Double-action safety steam valve |
| JPH08121626A (en) * | 1994-10-18 | 1996-05-17 | Toshiba Corp | Main steam relief safety valve |
| CN1214428A (en) * | 1997-10-13 | 1999-04-21 | 赵文轩 | Leakless safety valve |
| KR20090128124A (en) * | 2008-06-10 | 2009-12-15 | 주식회사 큐리프 | Device for discharging steam and unmanned cooking device with the same |
| KR20140054839A (en) * | 2012-10-30 | 2014-05-09 | 주식회사 탑세이프 | High velocity pressure valve |
| CN203784393U (en) * | 2014-04-30 | 2014-08-20 | 左萌 | Pilot-operated type automatic fluid infusion breather valve |
| CN204062052U (en) * | 2014-08-21 | 2014-12-31 | 上海阀门厂有限公司 | A kind of reheater safety valve |
| CN104455659A (en) * | 2014-12-08 | 2015-03-25 | 章华 | Top steam exhaust electromagnetic pressure relief valve for main steam system of power station |
| CN206361212U (en) * | 2016-12-01 | 2017-07-28 | 扬中市阀门厂有限公司 | A kind of power plant safety valve of quick closedown |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504237A (en) * | 2017-09-25 | 2017-12-22 | 泰州市博圣机械配件厂 | A kind of special automatic quick lever valve arrangement peculiar to vessel |
| CN109854559A (en) * | 2018-12-07 | 2019-06-07 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of parallel spring safety valve of low frequency response |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106523748B (en) | 2024-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107246284B (en) | A kind of shaft seal steam supply system of the extra-supercritical unit containing electric heater | |
| CN208741976U (en) | A kind of supercritical carbon dioxide green extracting system | |
| CN106523748A (en) | Quick-closed power station safety valve | |
| CN206361212U (en) | A kind of power plant safety valve of quick closedown | |
| CN207145020U (en) | A kind of combined regulating valve suitable for small steam turbine | |
| CN203348561U (en) | Rapid opening and closing valve | |
| CN204962715U (en) | A horizontal oxygen -eliminating device for 600MW supercritical unit | |
| CN204372237U (en) | Novel prominent open type pilot valve | |
| CN207145756U (en) | High Pressure Difference labyrinth regulating valve | |
| CN105257873B (en) | The double protection fall lift type spring safety valves of controllable type and boiler steam and water circuit | |
| CN203879554U (en) | Three-level water seal device of thermal power plant sealing heater | |
| CN206830294U (en) | Water-air intercooler with decompression function | |
| CN210716131U (en) | Pneumatic type emptying valve | |
| CN204717071U (en) | Novel cutting-off-check valve | |
| CN203743544U (en) | Full lift spring safety valve | |
| CN206140656U (en) | Throwing machine with loading attachment | |
| CN208676252U (en) | The soya-bean milk bean curd machine of anti-suck anti-backflow | |
| CN202484375U (en) | High water filling safety valve for boiler | |
| CN206450032U (en) | A kind of vacuum drier for preparing collecting agent | |
| CN203723371U (en) | Automated cereal puffing device | |
| CN205859970U (en) | A kind of Novel heating system | |
| CN109751419A (en) | Double-balance bellows pressure reducing valve | |
| CN209483615U (en) | A kind of energy-storage type mechanical seal high-temperature melting salt pump | |
| CN209012161U (en) | A kind of Novel foaming machine prefill valve | |
| CN203646453U (en) | Preheating type steam sterilization pot |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | 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 |