CN106090360A - Anti-fricative pressure release reactor - Google Patents
Anti-fricative pressure release reactor Download PDFInfo
- Publication number
- CN106090360A CN106090360A CN201610665379.7A CN201610665379A CN106090360A CN 106090360 A CN106090360 A CN 106090360A CN 201610665379 A CN201610665379 A CN 201610665379A CN 106090360 A CN106090360 A CN 106090360A
- Authority
- CN
- China
- Prior art keywords
- pressure release
- close
- quan
- valve casing
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—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
-
- 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
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- 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
- F16K27/02—Construction of housing; Use of materials therefor of lift 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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/08—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths
Abstract
The invention discloses anti-fricative pressure release reactor, including kettle and pressure relief device, pressure relief device includes pressure release barrel, valve casing, spool and the elastic component for valve core reset;The close structure in top is had additional between spool and pressure release barrel, push up close structure to include pushing up close annular groove, push up close annular groove and be opened in pressure release barrel top, push up and before in close annular groove, be provided with top Mi Quan, push up close annular groove and be positioned at pressure release barrel inwall, valve casing is additionally provided with for fixing top Mi Quan in the fixing bulge loop pushed up in close annular groove.Increase the air-tightness of whole pressure relief device by pushing up close structure, it is to avoid gas spills from the gap at top, produce noise, make pressure relief equipment the quietest.
Description
Technical field
The present invention relates to reactor, it is anti-fricative pressure release reactor.
Background technology
Entecavir is in the preparation process of reactor, and the intermediate product of generation needs to be filled with noble gas as protection,
This noble gas many employings nitrogen, owing to the intermediate product in reactor can produce other certain gases, therefore when converting
Need to control well reactor internal gas pressure when being filled with nitrogen, anti-impervious liquid.
Want to be released by the gas of overvoltage in time simultaneously, it is ensured that intrinsic pressure suitably, be difficult to ensure that intrinsic pressure owing to manually carrying out pressure release
It is stable at a numerical value, and low during height time intrinsic pressure, and the preparation for Entecavir affects relatively big, and there is certain danger
Property.
Owing to, in pressure leak process, high velocity air, when through small holes or gap, can make air produce friction and vibrate, thus
Produce noise.
Summary of the invention
The goal of the invention of the present invention is to solve high velocity air in the problem producing noise through small holes or gap, it is provided that
Anti-fricative pressure release reactor, increases the air-tightness of whole pressure relief device, it is to avoid gas spills from gap by tight mechanism, produces
Noise.
In order to realize foregoing invention purpose, present invention employs techniques below scheme: anti-fricative pressure release reactor, including still
Body and pressure relief device, described pressure relief device includes pressure release barrel, valve casing, spool and the elastic component for valve core reset;Pressure release cylinder
Being provided with the gas channel that connect internal with kettle bottom wall, pressure release barrel open top is arranged, and valve casing is sheathed and is fixed on pressure release
Wall inner portion, forms the gap that supply stream passes through between pressure release barrel and valve casing, pressure release barrel is provided with silencing mechanism, described quiet
Mechanism includes tight mechanism and the multiple steam vents flowed out for air-flow, and described steam vent is arranged along pressure release barrel sidewall circumference annular
Row;Described tight mechanism includes pushing up close structure, pushes up close structure and includes pushing up close annular groove, pushes up close annular groove and is opened in pressure release barrel top,
Pushing up and be provided with top Mi Quan before in close annular groove, the close annular groove in described top is positioned at pressure release barrel inwall, described valve casing is additionally provided with for fixing
The top Mi Quan fixing bulge loop in pushing up close annular groove;The close circle in described top is L-shaped, and described valve casing top is provided with for being embedded top Mi Quan
The close caulking groove in top, valve casing top be additionally provided with compress top Mi Quan the close pressure ring in top;It is provided with inside valve casing and moves for spool reciprocal telescopic
Cavity volume, elastic component and spool be respectively positioned in cavity volume, and described cavity volume sidewall is provided with the valve opening connected with gap, in described cavity volume also
It is provided with the position limiting structure preventing spool from deviating from.
Preferably, described top close circle integral middle is provided with oblique ring, and the close pressure ring in described top is provided with the chamfering compressed with oblique ring.
Preferably, described tight mechanism also includes that the close structure in the end, the close structure in the end include end Mi Quan, and close circle is tapered at the described end
Ring-type, end Mi Quan is between pressure release barrel and valve casing, and valve casing lower end compresses end Mi Quan, valve casing lower end in a tubular form, under valve casing
End and the end Mi Quan place of compressing are provided with the sealing chamfering of circle the taper fit close end of with.
Preferably, the bottom of described end Mi Quan is additionally provided with horizontal washer, the thickness of described horizontal washer the circle close end of more than thickness
Degree.
Preferably, being provided with the closure gasket groove being embedded for end Mi Quan in described pressure release barrel, described end Mi Quan is embedded at sealing
In annular groove, closure gasket groove is tapered ring-type.
Preferably, described end Mi Quan and horizontal washer are all embedded in closure gasket groove.
Preferably, described valve casing outer wall is threaded connection with the inwall of pressure release barrel.
Preferably, described steam vent arranges and along pressure release barrel axle center array in the form of a ring in pressure release barrel sidewall.
Preferably, described position limiting structure is bulge loop, and described bulge loop is fixed on the inner wall surface of valve casing.
Compared with prior art, have employed the anti-fricative pressure release reactor of technique scheme, have the advantages that
One, using the anti-fricative pressure release reactor of the present invention, the spool in pressure relief device can be worked as spool by air pressure jack-up
During by high pressure jack-up, valve opening is opened, and is connected with gap by the gas channel in valve casing, gap so that by the gas that releases from row
Shed in pore.
Owing to spool can be controlled by elastic component, and it is to use elastic component to be controlled, therefore when intrinsic pressure slightly larger
When elastic pressure, valve opening can be opened, and quickly reactor internal high pressure is carried out pressure release, when intrinsic pressure less than elastic pressure
Time, spool sets back and is closed by valve opening, reaching the effect of pressure control voltage stabilizing.
Two, secondly by setting up multiple thickly dotted steam vent on pressure release barrel, the gas velocity at steam vent is reduced
Degree, eliminates fricative phenomenon, reduces noise, makes production environment the quietest.
Three, tight mechanism is for sealing the joint gap between pressure release barrel and valve casing, reduces the noise that gas leakage produces.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention anti-fricative pressure release reactor embodiment;
Fig. 2 is the structural representation of pressure relief device in the present invention;
Fig. 3 is the sectional view (valve opening closed mode) of pressure relief device in the present invention;
Fig. 4 is the sectional view (valve opening opening) of pressure relief device in the present invention;
Fig. 5 is the sectional view of valve casing in the present invention;
Fig. 6 is the partial enlarged drawing in Fig. 5 at B;
Fig. 7 is the sectional view of pressure release barrel in the present invention;
Fig. 8 is the structural representation of end Mi Quan in the present invention;
Fig. 9 is the sectional view of end Mi Quan in the present invention;
Figure 10 is the structural representation pushing up Mi Quan in the present invention;
Figure 11 is the sectional view pushing up Mi Quan in the present invention.
Reference: 1, valve casing;10, valve opening;11, groove;110, gathering sill;12, external screw thread;13, bulge loop;14、;15、
Seal chamfering;16, close caulking groove is pushed up;17, close pressure ring is pushed up;2, spool;20, lead;3, pressure release barrel;30, gap;31, aerofluxus
Hole;32, female thread;41, top Mi Quan;410, oblique ring;42, end Mi Quan;420, horizontal washer.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described further.
As Fig. 1 is to fricative pressure release reactor anti-shown in 8, and including kettle and pressure relief device A, pressure relief device A includes pressure release cylinder
Wall 3, valve casing 1, spool 2 and the elastic component resetted for spool 2;
Being provided with the gas channel that connect internal with kettle bottom pressure release barrel 3, pressure release barrel 3 open top is arranged, valve casing 1
Sheathed and to be fixed on pressure release barrel 3 internal, form the gap 30 that supply stream passes through, pressure release barrel between pressure release barrel 3 and valve casing 1
3 are provided with the multiple steam vents 31 flowed out for air-flow, and steam vent 31 is along pressure release barrel 3 sidewall circumference annular array.
Spool in pressure relief device can be by air pressure jack-up, and when spool is by high pressure jack-up, valve opening is opened, by valve casing
Gas channel is connected with gap, gap and then shed in steam vent by the gas released.
Owing to spool can be controlled by elastic component, and it is to use elastic component to be controlled, therefore when intrinsic pressure slightly larger
When elastic pressure, valve opening can be opened, and quickly reactor internal high pressure is carried out pressure release, when intrinsic pressure less than elastic pressure
Time, spool sets back and is closed by valve opening, reaching the effect of pressure control voltage stabilizing.
Steam vent 31 arranges and along pressure release barrel 3 axle center array in the form of a ring in pressure release barrel 3 sidewall.Owing to high velocity air exists
When small holes or gap, air can be made to produce friction and vibrate, thus produce noise.Therefore, the present embodiment is by pressure release
Set up multiple thickly dotted steam vent on barrel 3, eliminate fricative phenomenon, reduce noise, make production environment the quietest.
Valve casing 1 outer wall is threaded connection with the inwall of pressure release barrel 3.Pressure release barrel 3 inwall is provided with female thread, valve casing 1
Outer wall is provided with external screw thread, and external screw thread engages with female thread.By screwed tight, valve casing 1 is rigidly secured to pressure release barrel 3
In.
The effect of tight mechanism is to increase the air-tightness of pressure relief device, makes all of air-flow all arrange in pressure release steam vent
Go out, it is to avoid air-flow produces noise through gap.
Tight mechanism includes pushing up the close structure of close structure and the end:
Push up close structure, as shown in Fig. 6, Figure 10 and Figure 11, push up close structure and include pushing up close annular groove 33, push up close annular groove 33 and be opened in
Pressure release barrel 3 top, pushes up before in close annular groove 33 and is provided with the close circle 41 in top, push up close annular groove 33 and be positioned at pressure release barrel 3 inwall, on valve casing 1
Being additionally provided with that to push up close circle for fixing top Mi Quan in the fixing bulge loop 14 pushed up in close annular groove L-shaped, described valve casing top is provided with use
In being embedded the close caulking groove in top 16 pushing up Mi Quan, valve casing top is additionally provided with the close pressure ring in top 17 compressing top Mi Quan.
As shown in Figure 3 or Figure 4, when valve casing is pressed for 1 time, push up close circle 41 and be completely embedded in the close caulking groove 16 in top, push up close circle 41 water
Flat part is compressed downwards by pushing up close pressure ring 17, plays good sealing function, makes level and the gap on vertical direction by completely
Seal, prevent gas from oozing out.
As shown in figure 11, push up close circle 41 integral middle and be provided with oblique ring 410, push up close pressure ring 17 be provided with compress with oblique ring fall
Angle.Tiltedly the effect of ring 410 is to increase the integral thickness pushing up close circle 41, and makes up level and the sealing deformation on vertical direction
Amount, when the chamfering pushing up close pressure ring 17 is pressed into oblique ring 410, oblique ring deforms, to vertically and horizontally deforming, between inciting somebody to action
Gap is filled up.
The close structure in the end, including the close circle in the end 42, tapered ring-type of the end close circle 42, the close circle in the end 42 is positioned at pressure release barrel 3 and valve
Between shell 1, valve casing 1 lower end compresses the close circle in the end 42, and in a tubular form, valve casing 1 lower end and the end Mi Quan place of compressing are provided with and the end in valve casing 1 lower end
The sealing chamfering 15 of close circle taper fit.
The tapering of the close circle in the end 42 coordinates with sealing chamfering 15, can increase the area of sealing, improves sealing, and permissible
The horizontal and vertical equal sealing that can obtain is strengthened.
The bottom of the close circle in the end 42 is additionally provided with horizontal washer 420, and the thickness of horizontal washer 420 is more than the end close circle 42 thickness, water
Plain washer the circle close end of with is one-body molded.Due to valve casing be threaded into tighten time, downward pressure is relatively big, sets up level pad successively
Circle 420 can effectively compress bottom valve casing, and the valve casing effect of tightening is played preferably utilization, the thickness of horizontal washer 420
Thicker, it is to deal with compressing when valve casing is tightened, it is therefore desirable to thicker thickness is used for deformable seal.
Being provided with the closure gasket groove 34 being embedded for end Mi Quan in pressure release barrel 3, the close circle in the end 42 and horizontal washer 420 are all embedded at
In closure gasket groove 34, closure gasket groove 34 is tapered ring-type.
The effect of closure gasket groove 34 is when the close circle in the end 42 and horizontal washer 420 are by valve casing crimp, it is possible to completely
Full live whole closure gasket groove 34, the area making contact is bigger, effectively improves sealing property.Secondly, closure gasket groove 34 can
So that end Mi Quan and horizontal washer are played good fixation, during preventing valve casing from turning, end Mi Quan and horizontal washer run
Partially.
Pressure release barrel 3 top is additionally provided with the close annular groove 33 in top, is embedded with the close circle 41 in top, pushes up close annular groove 33 in pushing up close annular groove 33
In pressure release barrel 3 inwall, valve casing 1 is additionally provided with for the fixing top Mi Quan fixing bulge loop 14 in pushing up close annular groove.
In the present embodiment, there is the place in gap except bottom in valve casing and pressure release barrel, also top, therefore top is still
Sealing structure set up by needs.
Setting up the close annular groove 33 in top on the sidewall of pressure release barrel, place and push up close circle 41 in pushing up close annular groove 33, pushing up close circle 41 is
Mi Quan at the bottom of usual endless, when valve casing is tightened, the fixing bulge loop 14 of valve casing outer wall can hold out against pushing up close circle 33, prevents top
Close circle 33 comes off or offsets.
Valve casing 1 is internal is provided with the cavity volume 11 moved for spool 2 reciprocal telescopic, and spring and spool 2 are respectively positioned in cavity volume 11, hold
Chamber 11 sidewall is provided with the valve opening 10 connected with gap 30, and cavity volume 11 inner wall surface is additionally provided with bulge loop 13.The effect of bulge loop 13 is,
Spool, when by spring fight back in situ, can play a spacing effect, prevents spool from deviating from cavity volume, causes control valve to lose
Effect.
Spool 2 includes lead 20, and lead 20 is located at the top of spool 2, and spool 2 assumes a " convex " shape, and sets in cavity volume 11
Having the gathering sill 110 embedded for lead 20, return unit is spring, and lead 20 sidewall is located at by spring housing.
Lead 20 has two functions: first, is for keeping the spool direction when sliding, it is ensured that spool can edge
The axis direction of valve casing slides, and prevents skew, it is to avoid dislocation;Secondly, sheathed for spring, plays a limit to spring
Position effect, prevents spring from use offseting.
Due to pressure release barrel 3 with valve casing 1 when docking, still there is gap, many places, therefore pressure release barrel 3 and valve casing 1 it
Between be additionally provided with prevent gas leakage the close circle of the close circle in top 41 and the end 42.At two, the effect of sealing ring is, it is possible to coordinate pressure release barrel 3 with
Valve casing 1 tightens effect, by valve casing 1 press down by sealing ring tightly card jail in gap, improve tightness, it is to avoid air-flow from
Overflow in gap, noise occurs.
It is above the preferred embodiment of the present invention, former without departing from the present invention for the person of ordinary skill of the art
On the premise of reason, it is also possible to make some modification and improvement, these also should be regarded as protection scope of the present invention.
Claims (9)
- The most anti-fricative pressure release reactor, it is characterised in that: including kettle and pressure relief device (A), described pressure relief device (A) includes letting out Pressure cylinder wall (3), valve casing (1), spool (2) and the elastic component resetted for spool (2);-pressure release barrel (3) bottom is provided with the gas channel that connect internal with kettle, and pressure release barrel (3) open top is arranged, valve casing (1) sheathed and to be fixed on pressure release barrel (3) internal, form supply between pressure release barrel (3) and valve casing (1) and flow the gap passed through (30), pressure release barrel (3) is provided with silencing mechanism, and described silencing mechanism includes tight mechanism and the multiple steam vents flowed out for air-flow (31), described steam vent (31) is along pressure release barrel (3) sidewall circumference annular array;-described tight mechanism includes pushing up close structure, pushes up close structure and includes pushing up close annular groove (33), pushes up close annular groove (33) and be opened in pressure release Barrel (3) top, pushes up and is provided with top Mi Quan (41) before in close annular groove (33), and the close annular groove in described top (33) is positioned at pressure release barrel (3) Wall, described valve casing (1) is additionally provided with for fixing top Mi Quan in the fixing bulge loop (14) pushed up in close annular groove;The close circle in-described top is L-shaped, and described valve casing top is provided with the close caulking groove in the top (16) for being embedded top Mi Quan, valve casing top It is additionally provided with the close pressure ring in the top (17) compressing top Mi Quan;-valve casing (1) is internal is provided with the cavity volume (11) moved for spool (2) reciprocal telescopic, and elastic component and spool (2) are respectively positioned on cavity volume (11), in, described cavity volume (11) sidewall is provided with the valve opening (10) connected with gap (30), is additionally provided with and prevents in described cavity volume (11) The position limiting structure that spool (2) is deviate from.
- Anti-fricative pressure release reactor the most according to claim 1, it is characterised in that: described top Mi Quan (41) integral middle sets Being equipped with oblique ring (410), the close pressure ring in described top (17) is provided with the chamfering compressed with oblique ring.
- Anti-fricative pressure release reactor the most according to claim 1, it is characterised in that: described tight mechanism also includes the close knot in the end Structure, the close structure in the end includes end Mi Quan (42), and tapered ring-type of described end Mi Quan (42), end Mi Quan (42) is positioned at pressure release barrel (3) and between valve casing (1), valve casing (1) lower end compresses end Mi Quan (42), valve casing (1) lower end in a tubular form, valve casing (1) lower end and the end The Mi Quan place of compressing is provided with the sealing chamfering (15) of circle the taper fit close end of with.
- Anti-fricative pressure release reactor the most according to claim 2, it is characterised in that: the bottom of described end Mi Quan (42) also sets Having horizontal washer (420), the thickness of described horizontal washer (420) is more than end Mi Quan (42) thickness.
- Anti-fricative pressure release reactor the most according to claim 4, it is characterised in that: it is provided with confession in described pressure release barrel (3) The closure gasket groove (34) that end Mi Quan is embedded, described end Mi Quan (42) is embedded in closure gasket groove (34), and closure gasket groove (34) is in cone Shape is ring-type.
- Anti-fricative pressure release reactor the most according to claim 5, it is characterised in that: described end Mi Quan and horizontal washer are the most embedding It is located in closure gasket groove (34).
- Anti-fricative pressure release reactor the most according to claim 1, it is characterised in that: described valve casing (1) outer wall and pressure release cylinder The inwall of wall (3) is threaded connection.
- Anti-fricative pressure release reactor the most according to claim 1, it is characterised in that: described steam vent (31) arranges in the form of a ring And along pressure release barrel (3) axle center array in pressure release barrel (3) sidewall.
- Anti-fricative pressure release reactor the most according to claim 1, it is characterised in that: described position limiting structure is bulge loop (13), Described bulge loop (13) is fixed on the inner wall surface of valve casing (1).
Priority Applications (1)
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CN201610665379.7A CN106090360B (en) | 2016-08-12 | 2016-08-12 | Anti- fricative pressure release reaction kettle |
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CN201610665379.7A CN106090360B (en) | 2016-08-12 | 2016-08-12 | Anti- fricative pressure release reaction kettle |
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CN106090360A true CN106090360A (en) | 2016-11-09 |
CN106090360B CN106090360B (en) | 2018-04-13 |
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CN201610665379.7A Expired - Fee Related CN106090360B (en) | 2016-08-12 | 2016-08-12 | Anti- fricative pressure release reaction kettle |
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CN2042141U (en) * | 1988-07-08 | 1989-08-02 | 燕建国 | Muffling pressure-limiting valve |
CN2161791Y (en) * | 1993-01-16 | 1994-04-13 | 柳州市半导体材料厂 | Compression muffler for gas storage tank |
JP2010216585A (en) * | 2009-03-17 | 2010-09-30 | Bridgestone Corp | Safety valve with pressure indication |
CN201963972U (en) * | 2010-12-20 | 2011-09-07 | 福田雷沃国际重工股份有限公司 | Pressure release and noise reduction safety valve |
CN102853154A (en) * | 2012-08-29 | 2013-01-02 | 江阴万讯自控设备有限公司 | High-pressure difference classification protected regulating valve |
CN202852108U (en) * | 2012-10-18 | 2013-04-03 | 丽水中德石化设备有限公司 | Fire-prevention hydraulic control device |
CN202927178U (en) * | 2012-11-10 | 2013-05-08 | 无锡智能自控工程股份有限公司 | Pilot-operated double-valve core split-range control valve |
CN203784394U (en) * | 2014-04-03 | 2014-08-20 | 上海宝邦医疗器械有限公司 | Novel air constant pressure valve |
CN205338625U (en) * | 2016-01-11 | 2016-06-29 | 武汉苏泊尔炊具有限公司 | Relief valve and pressure cooker for pressure cooker |
CN205938015U (en) * | 2016-08-12 | 2017-02-08 | 胡海潮 | Anti -friction sound pressure release reation kettle |
-
2016
- 2016-08-12 CN CN201610665379.7A patent/CN106090360B/en not_active Expired - Fee Related
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2042141U (en) * | 1988-07-08 | 1989-08-02 | 燕建国 | Muffling pressure-limiting valve |
CN2161791Y (en) * | 1993-01-16 | 1994-04-13 | 柳州市半导体材料厂 | Compression muffler for gas storage tank |
JP2010216585A (en) * | 2009-03-17 | 2010-09-30 | Bridgestone Corp | Safety valve with pressure indication |
CN201963972U (en) * | 2010-12-20 | 2011-09-07 | 福田雷沃国际重工股份有限公司 | Pressure release and noise reduction safety valve |
CN102853154A (en) * | 2012-08-29 | 2013-01-02 | 江阴万讯自控设备有限公司 | High-pressure difference classification protected regulating valve |
CN202852108U (en) * | 2012-10-18 | 2013-04-03 | 丽水中德石化设备有限公司 | Fire-prevention hydraulic control device |
CN202927178U (en) * | 2012-11-10 | 2013-05-08 | 无锡智能自控工程股份有限公司 | Pilot-operated double-valve core split-range control valve |
CN203784394U (en) * | 2014-04-03 | 2014-08-20 | 上海宝邦医疗器械有限公司 | Novel air constant pressure valve |
CN205338625U (en) * | 2016-01-11 | 2016-06-29 | 武汉苏泊尔炊具有限公司 | Relief valve and pressure cooker for pressure cooker |
CN205938015U (en) * | 2016-08-12 | 2017-02-08 | 胡海潮 | Anti -friction sound pressure release reation kettle |
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