CN208951368U - Pressure reducing valve - Google Patents
Pressure reducing valve Download PDFInfo
- Publication number
- CN208951368U CN208951368U CN201821351423.8U CN201821351423U CN208951368U CN 208951368 U CN208951368 U CN 208951368U CN 201821351423 U CN201821351423 U CN 201821351423U CN 208951368 U CN208951368 U CN 208951368U
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- Prior art keywords
- valve
- pressure reducing
- reducing valve
- sealing
- end side
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Classifications
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
- F16K1/465—Attachment of sealing rings to the valve seats
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/0011—Breather valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating or supervising devices
- F02B77/10—Safety means relating to crankcase explosions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/024—Pressure relief valves
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
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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
- 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
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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
- 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
- F16K17/0466—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 a special seating surface
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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
Abstract
The pressure reducing valve on wall opening that the utility model relates to a kind of for the wall of working chamber to be arranged in, it is therefore intended that: it can manufacture simple and economically and the deposit on valve seat can be reduced.It is provided according to the utility model, the first end side surface (DA1) and opposite the second end side surface (DA2) are provided on sealing element (16), wherein, in the closed state of pressure reducing valve (1), valve plate (15) hermetically sticks on the first end side surface (DA1) and the second end side surface (DA2) is at least partly exposed, built-in sealing inner peripheral surface (23) is provided on sealing element (16), the sealing inner peripheral surface is by the first end side surface and the second end side surface is connected and sealing element (16) is arranged on valve base element (5) by the sealing outer peripheral surface (28) of the outside opposite with sealing inner peripheral surface (23), and the sealing inner peripheral surface (23) is to valve seat opening (VO) in peripheral limit.
Description
Technical field
The pressure reducing valve on wall opening that the utility model relates to a kind of for the wall of working chamber to be arranged in, in working chamber
In beyond depressurizing working chamber in the case where prespecified opening pressure, the pressure reducing valve has the valve seat with valve seat opening
Element, in the closed state of pressure reducing valve be latched valve seat opening valve plate and between valve base element and valve plate be arranged in valve
Sealing element on seat element, the sealing element are in contact in the closed state of pressure reducing valve with valve plate, wherein are being more than preparatory
Valve plate can be lifted from sealing element to discharge valve seat opening in the case where defined opening pressure.
Background technique
Pressure reducing valve is for example used as in case of explosion for making the explosion-proof valve of closed working chamber decompression.This work
Chamber for example can be the crankcase of internal combustion engine, must reduce in case of explosion in the crankcase due to explode suddenly increase
Pressure, especially to avoid damaging.But there is also it is other, in case of explosion must be by decompression valve protection
Closed working chamber.For explode it is extrahazardous be, for example, in the working chamber for wherein handling powdered combustible medium,
Because may be relatively simple to form dust explosion herein.If dust by combustible material (such as coal, flour, timber, can
Can, coffee, starch or cellulose) be made, then be detonable by the mixture that dust and air form.This form it is inorganic
Substance and element (such as magnesium, aluminium, even iron and steel) are also (or at least combustible) of explosive.In addition to combustibility
Outside, the small particle size of dust is conclusive, such as explosive effect enhances with the reduction of particle size, because thus
It will increase the surface area of dust particles.Due to these effects it is possible that being considered as non-flammable material in compact form
Material incendivity in the form of this disperse.Different electricity or mechanical effect can be close by enough temperature and energy
Degree is used as incendiary source.Such as the spark that the functional fault by extracting in plug or electronic equipment generates may be just sufficient
It is enough.Similarly, important danger source is electrostatic (such as clothing by loading electrostatic), but can also be to convey device
(such as conveyer belt made of rubber or the like), the conveying device can be generated greatly by its friction and movement
Electrostatic pressure and charge.Surface (such as in production environment), grinding or the friction spark and axis that other incendiary source is, for example,
Hold damage.
In principle, explosive decompression valve is known in the prior art.Such as DK91047C, KR101800799 B1,
CN204512564U、DE212012000084U1、AT6424U1、AT311129B、ES312337A3、KR100928079B1、
KR100981453B1, WO09136674A1, DD87441 show explosion protection valve in different structural schemes, wherein in order to
It is sealed between valve plate and valve seat, is provided with the sealing element of the recesses and O-rings form of annular on valve seat respectively.This construction
On the one hand the shortcomings that scheme, is that the relatively high manufacture of valve seat expends, because the groove in particular for O-ring must be very
It accurately manufactures, to ensure good sealing.One other disadvantage is that the contact due to valve seat with working chamber is (especially
Medium in working chamber has in rodent situation), it is necessary to by high-quality, corrosion-resistant material be used for valve seat, and this
The cost of sample is high.In addition, being configured with gap in the region of sealing on valve seat, heap is formed in the gap location
Product object, this is especially unfavorable the sensitive hygiene applications in the case where (such as in food or pharmaceuticals industry).It may also nothing
Method consistently achieves desired leakproofness and in order to which the purpose of maintenance replacement sealing element is also relatively high consuming.
Utility model content
Therefore, the task of the utility model is, proposes a kind of pressure reducing valve for eliminating the disadvantage.The especially described decompression
Valve should can simply and economically fabricate and should reduce, the deposit especially avoided on valve seat.
According to the utility model, which solves in the following way, and the first sealing of composition is provided on sealing element
Second end side surface of first end side surface in face and opposite composition secondary sealing area, wherein in the closed state of pressure reducing valve
Valve plate hermetically sticks in the first end side surface and the second end side surface is at least partly to expose, and is provided on sealing element
It is internally positioned, continuously seal inner peripheral surface, which is connected the first end side surface with the second end side surface, and close
Element is sealed by the sealing periphery of outside opposite with sealing inner peripheral surface, that the first end side surface and the second end side surface are connected
Face is arranged on valve base element, and the sealing inner peripheral surface is open in peripheral limit to valve seat.By being incited somebody to action by sealing element
Valve seat is isolated with the process medium in working chamber, more economical material can be used for manufacture valve base element.In addition, reducing to valve
Seat element the accuracy of manufacture, especially to the high request of flatness, thus, it is possible to be manufactured more economically on valve seat.Valve base element
It can be simpler to design in structure, so as to mitigate weight.Additionally, sealing element can be used in simultaneously relative to solid
Determine flange or wall sealing, thus, it is possible to abandon using individual sealing element.
Advantageously, the pressure reducing valve has immobilising device pressure reducing valve to be fixed on the wall of working chamber, wherein preferably
Multiple fixing screws are provided with as immobilising device, pressure reducing valve can be tightened on the wall of working chamber by these fixing screws.
Screw has the advantages that screw is economic standard product and can simply open it and tighten again.
It is preferred that be provided in pressure reducing valve flame absorber to avoid flame from working chamber by pressure reducing valve to external diffusion,
In, the flame absorber is preferably with the form design for the plate groups being made of multiple plates stacked on top of each other.Thus, it is possible to can
It is avoided by ground, flame is scurried out outward in the case where explosion in working chamber, this can improve the safety for people and drop
The danger of low fire.
Preferably, the pressure reducing valve have spring unit, the spring unit setting is used for, by valve plate pressure reducing valve closing
It is pre-tightened with pretightning force relative to sealing element in state, wherein spring unit is preferably configured as having prespecified or can
The helical spring of the spring characteristic curve of variation, wherein the prespecified spring characteristic curve be preferably configured as it is linear,
Spring characteristic curve that is incremental or successively decreasing.Thus, it is possible to use simple and economic standardization machine element.
It is preferably provided with circular valve seat opening and corresponding circular valve seat, wherein sealing element is configured to
The sealing ring of rotational symmetry.Substantially tubular pressure reducing valve is consequently formed, the pressure reducing valve can be simply and economical
Ground manufacture.By the opening, valve plate and especially sealing ring circular shape realize good sealing effect and
Reduce deposit.
Advantageously, the first end side surface and sealing inner peripheral surface are configured to the first primary seal lip, which is subtracting
It is in contact in the closed state of pressure valve with valve plate.It is also advantageous that the first end side surface and sealing outer peripheral surface the second master of composition are close
Lip is sealed, which is in contact in the closed state of pressure reducing valve with valve plate.Thus, it is possible to improve sealing effect.
In order to be further improved sealing effect, can be set in the first end side surface and/or the second end side surface of sealing element
It is equipped at least one secondary sealing lip, the secondary sealing lip is between the first and second primary seal lips.
Preferably, the valve base element lug boss to extend internally along the direction of valve seat opening is provided on valve base element,
And sealing element recess is provided on sealing outer peripheral surface being arranged sealing element on valve base element lug boss, wherein
According to an advantageous structural scheme, valve base element has the first valve seat of the dish type of the first valve base part recess portion with center
Component and the disk with central second valve base part recess portion adjacent along the direction of motion of valve plate and first valve base part
Second valve base part of shape, wherein the first valve base part recess portion is smaller relative to the second valve base part recess portion, to constitute valve seat
Element lug boss.Thus, it is possible to the manufacture of simplified valve base element and therefore simplify the manufacture of entire pressure reducing valve and can be realized
The simple installation of good cooperation and sealing element.
Detailed description of the invention
Below with reference to the accompanying drawings the utility model is set forth in 1a to attached drawing 4b, and the attached drawing is illustratively, schematically
The advantageous structural scheme of the utility model is shown without limitation.In the accompanying drawings:
Fig. 1 a shows pressure reducing valve known in the prior art；
Fig. 1 b shows the detail view of valve seat；
Fig. 2 a shows pressure reducing valve according to the present utility model, in closed state；
Fig. 2 b shows the detail view of the valve seat of pressure reducing valve according to the present utility model；
Fig. 3 shows pressure reducing valve according to the present utility model, in an open state；
Fig. 4 a shows the sealing element with the first structural scheme of pressure reducing valve according to the present utility model；And
Fig. 4 b shows the sealing element with an other structural scheme of pressure reducing valve according to the present utility model.
Specific embodiment
Known in the prior art, cylinder shape pressure reducing valve 1 is shown in section view in Fig. 1.The pressure reducing valve 1 is set in this way
It sets on the wall opening 4 of the wall 3 of closed working chamber AR, so that pressure reducing valve 1 is in the closed state of pressure reducing valve 1 by working chamber AR
Ambient enviroment AT relative to closed working chamber AR is sealed.Pressure reducing valve 1 has valve axis VA, external valve chest 2 and valve seat
Element 5, they keep together (herein in the form of pinching screw 6a) by multiple clamping elements 6.In valve chest 2 and valve
Spacer element 7 is provided between seat element 5, the spacer element can for example be designed as (unshowned) around pinching screw 6a
Spacer sleeve or as seen in Figure 1 as designed one-piece with pinching screw 6a.The spacer element 7 is used for, will
Valve chest 2 and valve base element 5 with determining spacing along the axial direction of pressure reducing valve 1 be spaced from each other ground, substantially rigidly connect
It connects.In order to screw in pinching screw 6a, be provided in valve base element 5 corresponding threaded hole 8 and in order to by pinching screw 6a with
Securely twist-on is provided with nut 9 to valve chest 2, by the thread section of the nut driving to pinching screw 6a, the screw thread
Section protrudes from valve chest 2.
Axially set between valve chest 2 and valve base element 5 and along radial direction in the outside of pressure reducing valve 1
It is equipped with flame absorber 10, which is implemented in the form of the plate being stacked with herein.The flame absorber
10 are used in the case where explosion in working chamber AR, wear possible flame can not in the state that pressure reducing valve 1 is opened
Pressure reducing valve 1 is crossed to enter in ambient enviroment AT.Pressure reducing valve 1 is by immobilising device 11 (herein in the form of fixing screws 11a)
It is fixed on wall 3.In order to tighten fixing screws 11a, corresponding threaded hole 12 is provided in wall 3.Fixator can be surrounded again
Part 11 is provided with spacer element 7 between valve chest 2 and valve base element 5, between which is designed as in the illustrated example
Spacer 7a.
Spring unit 13 is provided on the inside of valve chest 2, which sticks on valve casing with an axial end portion
On body 2 and the opposite axial end portion of the spring unit sticks on valve plate 15.Closing of the spring unit 13 in pressure reducing valve 1
Valve plate 15 is pre-tightened with the pretightning force Fv of restriction relative to valve base element 5 in state, by the wall opening 4 of wall 3 and thus will
Working chamber AR locking.The sealing element 16 of O-ring form is provided between valve plate 15 and valve base element 5 on valve base element 5,
The sealing element seals valve plate 15 relative to valve base element 5 (in the closed state of pressure reducing valve 1).
Fig. 1 b shows the detail view of sealing area mark in fig 1 a, between valve plate 15 and valve base element 5.At this
In be designed as the sealing element 16 of O-ring and be in substantially annularly sealed groove 17 circular on valve base element 5.For reality
The construction of now sealing effect good enough, sealed groove 17 has decisive meaning.The sealed groove 17 has complexity
Geometry, it is necessary to highly precisely (i.e. with small dimensional tolerance) manufacture and furthermore must it is very smooth (i.e. have it is small
Roughness) and it is smooth.This is it is naturally required that high manufacture expends, because to valve base element 5 must be carried out mechanical add with height consuming
Work, such as (such as by milling or turning) must be processed simultaneously to the surface towards valve plate 15 of valve base element 5 first
And it is then able to manufacture sealed groove 17, this can for example be realized by turning, as long as the sealed groove is for example shown here
As be rotational symmetry sealed groove.
The manufacture (usually being realized by deep-draw) of valve plate is also that opposite consuming is high in traditional embodiment of pressure reducing valve
, to reach enough leakproofness.Very high required precision especially is proposed to the planarization of valve plate, these precision are wanted
Ask all to attain full and complete satisfaction always.
Other than the consuming in the relatively high manufacturing technology for manufacturing sealed groove, in the closed of pressure reducing valve 1
It is being configured with gap area between valve plate 15 and valve base element 5 in the region of sealing element 16 in state, is such as being shown in Figure 1b
As.If hygiene applications that pressure reducing valve 1 is used to partly have very strict regulation in terms of cleannes (such as eaten
In product and pharmaceuticals industry), then the gap area is especially unfavorable.For example, if perishable foods are handled in working chamber AR,
Then there is the danger that deposit is formed in gap area, these deposits may cause to form germ, this is all anyway
Unfavorable.
In fig 1 a it can also be seen that valve base element 5 on being radially disposed in internal side substantially directly with working chamber AR
Contact is in working media processed in it.Medium in working chamber AR has the case where rodent, strong corrosive
It is lower using pressure reducing valve 1 when, usually it is necessary that valve seat 5 is manufactured by corresponding corrosion resistant and therefore expensive material, this is from economy
It is unfavorable from the point of view of angle.
Therefore, according to the utility model, pressure reducing valve 1 is designed as the sealing element 16 with specially-shaped, such as in Fig. 2 a, figure
Illustrated in 2b and Fig. 3.The the first end side surface DA1 and phase for constituting primary sealing area DF1 are provided on sealing element 16
Opposed, composition secondary sealing area DF2 the second end side surface DA2, wherein in the closed state of pressure reducing valve 1, valve plate 15 is sealed
Ground sticks on the sealing surface DF1 that the first end side surface DA1 is constructed in other words and the second end side surface DA2 at least partly exposes.
It means that when in use, pressure reducing valve 1 can paste on component (such as wall 3 of working chamber AR) by the end side surface DA2 of exposing
It is arranged by ground.In addition, sealing element 16 has an internally positioned, continuous sealing inner peripheral surface 23, the sealing inner peripheral surface is by first
End side surface DA1 and the second end side surface DA2 are connected.By with sealing inner peripheral surface 23 it is opposite, by the first end side surface DA1 and the
Sealing element 16 is arranged on valve base element 5 the sealing outer peripheral surface 28 that two end side surface DA2 are connected.By practical new according to this
The structural scheme of type, sealing element 16 be also used for other than for the sealing between valve plate 15 relative to fixed flange 20 or
Person directly seals relative to wall 3, and thus, it is possible to abandon using individual sealing element (referring to Fig. 1 a and Fig. 1 b in 5 He of valve base element
Sealing element between wall 3).
Fig. 2 a is shown in section view pressure reducing valve 1 according to the present utility model, with valve axis VA, the pressure reducing valve setting
On the wall opening 4 of the wall 3 of working chamber AR.Correspond to the pressure reducing valve 1 shown in fig 1 a on the structure principle of pressure reducing valve 1.Subtract
Pressure valve 1 has valve chest 2, which is fixed on wall 3 by immobilising device 11, and the immobilising device is fixed spiral shell herein
It follows closely 11a (not in section plane), the fixing screws is screwed into (unshowned) threaded hole 12 of wall 3.Pressure reducing valve 1 has
The clamping element 6 of distribution circumferentially (is in the example shown pinching screw 6a), pressure reducing valve 1 is axially retained at one
It rises.Element 19 is guided and supported in capable of being also provided on end external, departing from valve chest 2 for clamping element 6, it is described to mention
Element is taken herein with the form design of spiral lifting lug, the spiral lifting lug is for example screwed to the thread section of pinching screw 6a
On.By element 19 is guided and supported, spiral lifting lug can more simply operate pressure reducing valve 1, such as its mode in other words are as follows: by pressure reducing valve
It is fixed on crane hook, this is especially advantageous in the case where the embodiment of the weight of pressure reducing valve 1, because can make to pacify
Dress is easier.
In addition, pressure reducing valve 1 has spring unit 13, the helical spring 14 which is configured to taper herein is (excellent
Choosing has nonlinear spring characteristic curve).Nonlinear spring characteristic curve it is meant that helical spring 14 spring stiffness c
It is changed according to the stroke that helical spring 14 compresses, wherein the stroke corresponds to the institute of pressure reducing valve 1 in the embodied case
The lift of a valve H of meaningx.Therefore, the lift of a valve HxIt is the spacing between the detent position and open position of valve plate 15.It is described non-
Linear spring characteristic curve incrementally or can be designed degressively, wherein spring constant c increasing spring characteristic curve
In the case where about stroke increase and in the case where the spring characteristic curve to successively decrease about stroke reduce.This can for example be meaned
, lift of a valve H is arrived in order to promote valve plate 15xFirst 10% at need specific first opening force Fo1, and in order into one
Step, which promotes valve plate 15, needs specific second opening force Fo2 at second 20% of lift of a valve H, which is greater than
(incremental) or it is less than (successively decreasing) first opening force Fo1.Therefore it can be constructed by the structure of helical spring 14 and determine pressure reducing valve 1
Opening characteristic.It is of course also possible to use the helical spring 14 with linear spring characteristic curve, wherein spring constant c is closed
(Fo1=Fo2) is kept constant in stroke.
But it is, of course, envisaged that the spring of other structures type is used as spring unit 13, such as ring spring, gradually
Burst at the seams spring, diaphragm spring, disk spring etc..Such as it is also possible that this may have the advantages that with known air spring
Spring stiffness c may be changed via the air pressure of air spring and thus change the opening characteristic of pressure reducing valve 1.It thus may be non-
Pressure reducing valve 1 is neatly often adjusted by transformable opening pressure according to different applications, wherein open pressure and correspond to work
Following pressure in chamber AR, in the case where the pressure, the beginning of valve plate 15 is lifted from valve base element 5.
Valve plate 15 hermetically sticks in the closed state of pressure reducing valve 1 on sealing element 16 and along valve axis VA's
Direction is movably arranged relative to sealing element 16.Valve plate 15 closed state in the valve seat of pressure reducing valve 1 opening VO closed
It locks and valve seat is open VO when usually being lifted valve plate 15 from sealing element 16 by the pressure acted on valve plate 15
Release.According to the utility model, pressure reducing valve 1 has special sealing element 16 and the valve seat with the sealing element mating reaction
Element 5.Sealing element 16 has primary sealing area DF1, envelope of the primary sealing area in pressure reducing valve 1 on the first end side surface DA1
It is hermetically sticked in closed state on the valve plate inner face 15a of valve plate 15.The direction along valve axis VA of sealing element 16 is opposite
The the second end side surface DA2 set has the secondary sealing area DF2 exposed.First end side surface DA1 and the second end side surface DA2 are in inside
(towards valve seat opening VO) is connected by continuously sealing inner peripheral surface 23, and (wherein, which constitutes valve seat simultaneously
The peripheral bound of opening VO) and be connected in opposite side by sealing outer peripheral surface 28.By by sealing element 16 and especially
It is to seal inner peripheral surface 23 and be configured to the face of peripheral bound that is continuous, constituting valve seat opening VO valve seat can be open in the region VO
Possible seam minimize as far as possible, thus, it is possible to reduce and (preferably avoid) on pressure reducing valve 1 formed deposit danger.Institute
Continuous sealing inner peripheral surface 23 is stated in particular for making undesirable ingredient (such as dust or oil) can be from sealing element 16
Outflow.This is especially advantageous during the cleaning process of pressure reducing valve 1 in the case where hygiene applications, to avoid undesirable
Ingredient stops on sealing element 16.Ensured simultaneously by the embodiment of sealing element 16, valve base element 5 is passed through into sealing
Element 16 is separated with valve seat opening VO.Valve base element 5 is no longer in contact with the working media in working chamber AR as a result, so as to
It is enough that the valve base element 5 is simpler to design in terms of used material.
Via the second end side surface DA2 of the exposing, pressure reducing valve 1 can simply and be reliably sealingly disposed in a structure
On part.Herein it may be advantageous that the second end side surface DA2 protrudes from the axial end portion of pressure reducing valve 1 along the direction of valve axis VA
(such as being made of valve base element 5), thus, it is possible to by sealing element 16 in situation about being arranged on component by immobilising device 11
Under axially squeeze, which improve the sealings on secondary sealing area DF2.
Such as pressure reducing valve 1 can be directly anchored on the wall 3 of working chamber AR.But it can also be provided with fixed flange
20, which is fixed on wall 3 and pressure reducing valve 1 is fixed in the fixed flange.It thus also can be first by pressure reducing valve 1
First it is connected with fixed flange 20 and is and then jointly connected on wall 3.
The pinching screw 6a is screwed into the illustrated embodiment in fixed flange 20, herein certainly in valve base element
Recess portion (preferably through-hole) that is corresponding, extending axially through valve base element 5 is provided in 5, pinching screw 6a passes through the recess portion
It stretches out, so as to be screwed into the fixed flange 20 (or on wall 3).But fixed flange 20 is only optional and especially
Have the advantages that the supporting member that the sealing surface 21 definitely defined can be provided for sealing element 16, this improves decompression
The sealing characteristics of valve 1.Especially in the case where there is dirty or out-of-flatness on the surface of wall 3, the setting of spacer element 20 is that have
Benefit.Furthermore it is possible to more simply the recess portion in fixed flange 20 be precisely adjusted according to valve seat opening VO, so that in fixation
Seam or gap are not constituted between flange 20 and sealing element 16 as far as possible.Therefore, the central indentation in fixed flange 20
20a in a simple manner can axially extend valve seat opening VO in alignment and jointlessly.If be not provided with
Fixed flange 20, then sealing element 16 is directly supported at working chamber by the secondary sealing area DF2 of the exposing of the second end side surface DA2
It replaces being supported on spacer element 20 on the wall 3 of AR.
It designs to the cylinder shape basic in the illustrated embodiment of pressure reducing valve 1, there is (circular) valve seat of circle to open
Mouth VO, wherein the wall opening 4 of wall 3 is certainly preferably same to have round cross section.Correspondingly, valve plate 15, valve base element 5
Also implement in rotational symmetry substantially about valve axis VA in the illustrated example with fixed flange 20.Therefore, sealing element 16 is same
Sample is designed as the sealing ring of rotational symmetry.It certainly, can not be by rotational symmetry for the hole of pinching screw 6a and fixing screws 11a
Constraint.The setting of this some holes is distributed on circle (screw distribution circle has specific screw pitch circle diameter) simultaneously in so-called screw
And preferably it is arranged on screw distribution circle spaced-apartly with constant angular distance.
The preferably design in this way of sealing element 16, so that the circumferential surface 22 of sealing inner peripheral surface 23 and the recess portion 20a of fixed flange 20
(may be taper or cylinder shape) composition valve seat opening VO's is continuous smooth, preferably as jointless as possible, outer
The boundary enclosed.
Valve base element 5 can design in two style one-piece or as in the illustrated embodiment.Pass through valve seat
The embodiment of the two-piece type of element 5, valve base element 5 can particularly simple and economically fabricate, because of two valve base parts
5a, 5b are substantially the simple disc-shaped component of structure.The manufacture of valve base part 5a, 5b can be realized in a simple manner as a result,
Such as by the plate made of suitable material laser cutting, pass through continuously casting and subsequent sawing etc..Certainly, valve seat
Element 5 may also be implemented one-piece, such as turning part.
In the illustrated example, valve base element 5 has two to adjoin each other along the direction of the valve axis VA of pressure reducing valve 1
Valve base part 5a, 5b.First valve base part 5a is axially than the second valve base part 5b closer to valve plate 15, such as in Fig. 2 b
In can see that as.First valve base part 5a has the first valve base part recess portion in center and the second valve base part 5b has
There is the second valve base part recess portion in center.First valve base part recess portion is less than the second valve base part recess portion, i.e. showing in pressure reducing valve 1
Have in the case where the embodiment of cylinder shape out relative to the second lesser diameter of valve base part recess portion.As a result, described two
Design to a basic dish type of valve base part 5a, 5b, their outer diameters having the same but with different thickness and different interior
Diameter, described two valve base parts overlap the to each other setting.What forecast scheme configuration extended radially inwardly through this construction (such as is essentially
Annular) valve components lug boss 24.Certainly, this direction along valve seat opening VO protrudes from the valve components of valve base element 5
Lug boss 24 also can be arbitrarily configured differently, and especially also be constructed on the valve base element 5 of single type.The valve components protrusion
Preferably closely implement on the circumference of valve seat opening VO in portion 24.
Sealing element 16 advantageously seals outer peripheral surface 28 by it and is arranged on valve components lug boss 24.For this purpose, sealing member
Part 16 has corresponding sealing element recess 25 on sealing outer peripheral surface 28, can be by sealing element by the sealing element recess
16 are arranged on valve components lug boss 24.
One other advantage of pressure reducing valve 1 according to the present utility model is that the valve base element 5 of pressure reducing valve 1 and work are situated between
Matter is completely isolated.Valve base element 5 (or described two valve base part 5a, 5b of valve base element 5) can be by any appropriate as a result,
Material be made and need not be machined as in the prior art to the sealed groove 17 for O-ring must
Machinable material must forcibly be used.In the case where handling corrosivity working media especially in working chamber AR, by valve
Seat element 5 is isolated with working media has clear advantage relative to traditional valve.By avoiding valve base element 5 and working chamber AR
In rodent, corrosive environment be in contact, it is not necessary to as so far by corrosion-resistant material be used to manufacture valve seat member
Part 5, but it is for example able to use simple steel, such as structural steel (S 235JR), this leads to apparent cost savings, especially
In the case where the large-scale embodiment of pressure reducing valve 1.Other suitable materials be also it is contemplated that, such as plastics or non-
Ferrous metal.
As already mentioned, it is preferably also provided with flame absorber 10 on pressure reducing valve 1, is used for due to explosion
And there is no flame from the ambient enviroment AT that pressure reducing valve 1 escapes into periphery in the case where forming flame.If outside pressure reducing valve 1
Ambient enviroment AT in there are combustible material, gas or other materials, this is especially used as may be around described
The safety measure of the people stopped in environment is used for fire protection.This flame absorber 10 be in the prior art it is known,
Thus this will not be detailed here.
Two advantageous structural schemes of sealing element 16 are exemplarily illustrated with sectional elevation in figs. 4 a and 4b.But
It is that the specific structural structural scheme of sealing element 16 is determined by those skilled in the art certainly and can be according to decompression
Valve 1 application and change, such as and working chamber AR in temperature it is related, it is related with working media or in working cavity AR
Pressure is related etc..Such as sealing element 16 can be on the first end side surface DA1 towards valve plate 15 and/or departing from valve plate 15
There are one or more circular sealing lips (a+ Fig. 4 b referring to fig. 4) on second end side surface DA2.Shown in fig.4 with sectional elevation
Advantageous first structural scheme of sealing element 16 and shown in fig. 4b advantageous second structural scheme out.Sealing element 16
It can be made substantially of any appropriate material, wherein it is preferable to use common elastic materials.Such as it is contemplated that plastics, synthesis
The mixture of rubber, natural rubber or these materials and other materials.Sealing material be in the prior art it is known and
Those skilled in the art can select corresponding suitable material for specific application.Especially (example in the case where hygiene applications
Such as in food or pharmaceuticals industry), all must be noted that under any circumstance using being suitable for this sealing material.
Sealing element 16 in 4a has sealing element recess 25 on sealing outer peripheral surface 28, the sealing element recess
Lower recess face 25a is arranged essentially parallel to the secondary sealing area DF2 of the second end side surface DA2.Sealing element recess 25 it is opposite
Upper notch face 25b is tilted with specifically pre-tightening angle α relative to the first recess face 25a, so that (not installing shape in sealing element 16
In state) between described two recess face 25a, 25b obtain specific minimum spacing a.Minimum spacing a is preferably determining in this way,
It is set to be less than (axial boss extension b b) referring to fig. 2 of valve base element lug boss 24.Thus, it is possible to be based on sealing element 16
Preferred flexible material generate certain pretightning force, by the pretightning force by the second recess face 25b (in sealing element 16
Installation condition in) be pressed on valve base element lug boss 24.Thus, it is possible to ensure that sealing element 16 seamlessly disposes substantially
On valve base element lug boss 24, wherein the upper notch face 25b preferred smooth twelve Earthly Branches in the installation condition of sealing element 16
It holds on valve base element lug boss 24 and is thus parallel to lower recess face 25a.
The first and second primary seal lips 27a, 27b are provided on (top) of sealing element 16 first end side surface DA1,
Wherein, the first primary seal lip 27a is made of sealing inner peripheral surface 23 and primary sealing area DF1 and the second primary seal lip 27b is by
One sealing surface DF1 and sealing outer peripheral surface 28 are constituted.Primary seal lip 27a, 27b is respectively provided with rounded ends, the rounded ends tool
There is specific radius R.Primary seal lip 27a, 27b in the installation condition of sealing element 16 hermetically with 15 mating reaction of valve plate,
As can see in figure 2b.The exact quantity i of primary seal lip 27i and exact structure construction depend on pressure reducing valve 1
Application, such as depending on the expected pressure in the expected highest or minimum temperature, working chamber in working chamber AR, take
Certainly in working media such as also depend on the necessary service life of sealing element 16.Such as it can will be in the envelope of pressure reducing valve 1
The first primary seal lip 27a that (this is normality) sticks on valve plate inner face 15a in closed state is designed as elongated, narrow and has
Small radius R, be tightly attached to well on valve plate inner face 15a as far as possible, so as to will valve plate 15 and the first primary seal lip 27a it
Between region in formed deposit danger minimize.It may also abandon then may using primary seal lip 27a, 27b
Primary sealing area DF1 is constructed with being substantially similar to secondary sealing area in fig.4.But it may also be for example in sealing unit
First (either second) primary seal lip 27a (or 27b) is provided only on 16.
Such as sealing inner peripheral surface 23 may have bending (as led in fig.4 in the uninstalled state of sealing element 16
Cross illustrated by dotted line), also better to be clung in the state of installation on valve plate inner face 15a.In sealing element 16
Installation condition in and in the closed situation of pressure reducing valve 1 deform the first primary seal lip 27a preferably elastically, so as to will be certain
Pretightning force be applied on valve plate 15, thus improve sealing effect.It can be with by the bending of sealing inner peripheral surface 23 in figure 2b
See, certain deformation occurs in the closed state of pressure reducing valve 1 for entire sealing element 16.The deformation again may be with many parameters
It is related to influence factor, for example, to by valve plate 15 be pressed on sealing element 16 by elastic force it is related, have with sealing material
Close, is related to the temperature in working chamber AR etc..
With the sealing inner peripheral surface 23 of substantially flat in the example that sealing element 16 is shown in fig.4, in sealing inner peripheral surface
23 and second end side surface DA2 secondary sealing area DF2 between have sealing gradient β.But for example, if sealing inner peripheral surface 23
(dotted line in fig.4) is designed deviously, which is also transformable in the length of sealing inner peripheral surface.?
On (top) first end side surface DA1, two secondary sealing lips are additionally provided between described two primary seal lips 27a, 27b
29, the secondary sealing lip sticks on valve plate inner face 15a in the closed state of pressure reducing valve 1 and improves sealing.In secondary sealing
The rounded portions with specific radius R can be similarly provided on the end of lip 29 and on edge.The rounded portions are logical
Often can also have certain least radius depending on manufacturing situation.Again can according to application or necessary sealing effect and
It is provided with more or fewer secondary sealing lips or is not provided with secondary sealing lip 29 completely.
Different from the embodiment according to Fig. 4 a, according to the embodiment of Fig. 4 b also in (lower part) the second end side surface DA2
It is upper that there is secondary sealing lip 29, to improve the sealing effect relative to spacer element 20 (or relative to wall 3).Additionally
It is provided with lug boss 30 between two primary seal lip 27b and sealing element recess 25, expands recess face 25b and thus to seal member
Part 16 provides more good bearing on valve base element lug boss 24.
It is preferred that will be used to have diameter < 500mm valve seat opening VO simultaneously according to the structural scheme of the sealing element 16 of Fig. 4 a
And preferably diameter > 500mm valve seat opening VO will be used for according to the structural scheme of the sealing element 16 of Fig. 4 b.
Certainly, the shown variant schemes of sealing element 16 is only construed as illustratively.It is readily apparent that
There is very big design space to those skilled in the art and according to subtracting in the structure construction aspect of sealing element 16
There is also the different structural schemes of sealing member 16 for the special applications of pressure valve 1, to reach required sealing effect.Certainly
One first can be only arranged and perhaps the secondary sealing lip 29i of the multiple quantity i of the second primary seal lip 27a, 27b or be provided with difference
Pretightning force, curved surface and angle.
Even if being retouched according to the structural scheme of advantageous cylinder shape to pressure reducing valve 1 according to the present utility model
It states, should also be as illustrating herein, other makes are also possible.Such as it may also set up for being different from cylinder shape
Wall recess 4 (such as triangle, rectangle or oval wall recess 4) pressure reducing valve 1.It is energy that structure, which is designed at,
It is enough to be adjusted according to the shape of wall recess 4.Here, the core of the utility model, i.e., sealing element 16 for being limited from periphery
The sum of boundary's valve seat opening VO is for remaining unchanged valve base element 5 with the valve seat opening VO construction being isolated.
Claims (14)
1. pressure reducing valve (1), which is used to be arranged the wall opening (4) in the wall (3) of working chamber (AR), and the pressure reducing valve is used
Depressurize working chamber (AR) in the case where in working chamber (AR) being more than prespecified opening pressure, the pressure reducing valve has
With valve seat opening (VO) valve base element (5) and have valve plate (15), wherein closing of the valve plate (15) in pressure reducing valve (1)
In state be latched valve seat opening (VO), and the pressure reducing valve have between valve base element (5) and valve plate (15) setting in valve
Sealing element (16) on seat element (5), the sealing element connect in the closed state of pressure reducing valve (1) with valve plate (15)
Touching, wherein valve plate (15) can be lifted from sealing element (16) to discharge in the case where being more than prespecified opening pressure
Valve seat is open (VO), which is characterized in that the first end for constituting primary sealing area (DF1) is provided on the sealing element (16)
The second end side surface (DA2) of side (DA1) and opposite composition secondary sealing area (DF2), wherein the envelope in pressure reducing valve (1)
Valve plate (15) hermetically sticks on the first end side surface (DA1) in closed state and the second end side surface (DA2) is at least partly dew
Out, be provided on sealing element (16) it is internally positioned, continuously seal inner peripheral surface (23), the sealing inner peripheral surface is by the
One end side (DA1) is connected with the second end side surface (DA2), and sealing element (16) is by opposite with sealing inner peripheral surface (23)
The sealing outer peripheral surface (28) of outside set, that the first end side surface (DA1) is connected with the second end side surface (DA2) is arranged in valve seat
On element (5), and the sealing inner peripheral surface (23) is open (VO) in peripheral limit to valve seat.
2. pressure reducing valve (1) according to claim 1, which is characterized in that the pressure reducing valve (1) have immobilising device (11) with
Pressure reducing valve (1) is fixed on the wall (3) of working chamber (AR).
3. pressure reducing valve (1) according to claim 2, which is characterized in that be provided with multiple fixing screws (11a) as fixation
Pressure reducing valve (1) can be tightened on the wall (3) of working chamber (AR) by device (11) by these fixing screws.
4. according to claim 1 to pressure reducing valve described in one of 3 (1), which is characterized in that be provided in the pressure reducing valve (1)
Flame absorber (10) passes through pressure reducing valve (1) to external diffusion from working chamber (AR) to avoid flame.
5. pressure reducing valve (1) according to claim 4, which is characterized in that the flame absorber (10) with by it is multiple each other
The form design of the plate groups of stacked plate composition.
6. pressure reducing valve (1) according to any one of claim 1 to 3, which is characterized in that the pressure reducing valve (1) has bullet
Spring unit (13), the spring unit setting is used for, by valve plate (15) with pretightning force (Fv) in the closed state of pressure reducing valve (1)
It is pre-tightened relative to sealing element (16).
7. pressure reducing valve (1) according to claim 6, which is characterized in that the spring unit (13) is configured to have preparatory
The helical spring (14) of defined or transformable spring characteristic curve.
8. pressure reducing valve (1) according to claim 7, which is characterized in that the spring characteristic curve is configured to linear, passs
Spring characteristic curve increasing or successively decreasing.
9. pressure reducing valve (1) according to any one of claim 1 to 3, which is characterized in that be provided with circular valve seat opening
(VO) and corresponding circular valve plate (15), wherein the sealing element (16) is configured to the sealing ring of rotational symmetry.
10. pressure reducing valve (1) according to any one of claim 1 to 3, which is characterized in that first end side surface (DA1)
The first primary seal lip (27a) is constituted with the sealing inner peripheral surface (23), closed of first primary seal lip in pressure reducing valve (1)
It is in contact in state with valve plate (15).
11. pressure reducing valve (1) according to claim 10, which is characterized in that first end side surface (DA1) and the sealing
Outer peripheral surface (28) constitute the second primary seal lip (27b), second primary seal lip in the closed state of pressure reducing valve (1) with valve plate
(15) it is in contact.
12. pressure reducing valve (1) according to claim 11, which is characterized in that in the first end side of the sealing element (16)
At least one secondary sealing lip (29) is provided on face (DA1) and/or the second end side surface (DA2), the secondary sealing lip is in first
Between primary seal lip (27a) and the second primary seal lip (27b).
13. pressure reducing valve (1) according to any one of claim 1 to 3, which is characterized in that on the valve base element (5)
It is provided with the valve base element lug boss (24) to extend internally along the direction of valve seat opening (VO), and in the sealing outer peripheral surface
(28) sealing element recess (25) is provided on being arranged sealing element (16) on valve base element lug boss (24).
14. pressure reducing valve (1) according to claim 13, which is characterized in that the valve base element (5) has with center
The first valve base part (5a) of the dish type of first valve base part recess portion and along valve plate (15) the direction of motion and first valve seat
The second valve base part (5b) of the dish type of adjacent, with center the second valve base part recess portion of component, wherein the first seat portion
Part recess portion is smaller relative to the second valve base part recess portion, to constitute valve base element lug boss (24).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA50604/2018 | 2018-07-13 | ||
| ATA50604/2018A AT521399B1 (en) | 2018-07-13 | 2018-07-13 | Explosion protection valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208951368U true CN208951368U (en) | 2019-06-07 |
Family
ID=66734229
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821351423.8U Active CN208951368U (en) | 2018-07-13 | 2018-08-21 | Pressure reducing valve |
| CN201980045655.1A Active CN112368498B (en) | 2018-07-13 | 2019-07-10 | Pressure reducing valve |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980045655.1A Active CN112368498B (en) | 2018-07-13 | 2019-07-10 | Pressure reducing valve |
Country Status (4)
| Country | Link |
|---|---|
| KR (2) | KR200494011Y1 (en) |
| CN (2) | CN208951368U (en) |
| AT (1) | AT521399B1 (en) |
| WO (1) | WO2020011881A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT202000004675A1 (en) | 2020-03-05 | 2021-09-05 | Innova S R L | RAIN PROOF FLAME STOP |
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| DK91047C (en) | 1957-02-25 | 1961-06-05 | Enfo Grundlagen Forschungs Ag | Explosion safety valve, especially for ship engines. |
| ES312337A3 (en) | 1965-04-28 | 1966-02-01 | Enfo Grundlagen Forschungs Ag | Improvements of safety valves against explosions in the crankshaft box of explosion engines. (Machine-translation by Google Translate, not legally binding) |
| AT311129B (en) | 1970-02-13 | 1973-10-25 | Hoerbiger Ventilwerke Ag | Explosion relief valve |
| JPS50100133U (en) * | 1974-01-17 | 1975-08-19 | ||
| JPS51100328U (en) * | 1975-02-12 | 1976-08-12 | ||
| US4423751A (en) * | 1980-12-09 | 1984-01-03 | Cummins Engine Company, Inc. | Bypass valve and alarm assembly |
| US4366837A (en) * | 1980-12-09 | 1983-01-04 | Cummins Engine Company, Inc. | Early warning bypass valve assembly |
| JPH0235091Y2 (en) * | 1985-06-14 | 1990-09-21 | ||
| US4674449A (en) * | 1985-12-20 | 1987-06-23 | Brunswick Corporation | Pressure regulated cooling system |
| JPH037661Y2 (en) * | 1987-02-12 | 1991-02-26 | ||
| AT6424U1 (en) | 1998-10-21 | 2003-10-27 | Hoerbiger Ventilwerke Gmbh | EXPLOSION RELIEF VALVE |
| US6834624B1 (en) * | 2000-05-11 | 2004-12-28 | Bombardier Recreational Products Inc. | Marine engine pressure relief valve |
| SE532137C2 (en) * | 2006-10-04 | 2009-10-27 | Tour & Andersson Ab | Valve with control function |
| JPWO2008120349A1 (en) * | 2007-03-29 | 2010-07-15 | 株式会社巴技術研究所 | Check valve |
| KR20090116312A (en) | 2008-05-07 | 2009-11-11 | (주)광산 | Flame arrester |
| KR100981453B1 (en) * | 2008-12-11 | 2010-09-13 | 현우에스엠티 주식회사 | Internal combustion engine cover for installing arrest |
| CN101476633A (en) * | 2009-02-13 | 2009-07-08 | 张省生 | Automatic pressure-relief valve of water pipeline |
| KR100928079B1 (en) | 2009-08-31 | 2009-11-25 | 박수건 | Maze type relief valve with flame arrester for a crankcase |
| CN201706024U (en) * | 2010-04-29 | 2011-01-12 | 中冶京诚工程技术有限公司 | Self-restoring explosion release valve |
| FI123375B (en) | 2011-04-13 | 2013-03-15 | Waertsilae Finland Oy | Explosion safety valve |
| JP2016008683A (en) * | 2014-06-25 | 2016-01-18 | 浜名湖電装株式会社 | Fluid control valve device |
| CN204512564U (en) | 2015-03-10 | 2015-07-29 | 广东康菱动力科技有限公司 | Anti-explosion safety Decompression valves |
| CN105090575A (en) * | 2015-05-20 | 2015-11-25 | 唐山市润捷机械设备制造有限公司 | Self-closed gas safety explosion venting valve |
| JP6639900B2 (en) * | 2015-07-01 | 2020-02-05 | トーステ株式会社 | Soft seat type disc seatless seal valve |
| FR3038960B1 (en) * | 2015-07-13 | 2017-08-11 | De Dietrich | AN IMPROVED FIRE SAFETY VALVE |
| CN105570501B (en) * | 2016-02-02 | 2018-07-06 | 石特阀门股份有限公司 | A kind of new gas voltage stabilizing unloading valve |
| CN206233978U (en) * | 2016-10-14 | 2017-06-09 | 上海佳豪船海工程研究设计有限公司 | A kind of new type explosion proof device being applied in gaseous propellant engine blast pipe |
| CN206988556U (en) * | 2017-07-20 | 2018-02-09 | 浙江工业职业技术学院 | A kind of explosion-proof solenoid valve |
| KR101800799B1 (en) * | 2017-08-24 | 2017-12-20 | 주식회사 프로세이브 | Explosion relief valve |
-
2018
- 2018-07-13 AT ATA50604/2018A patent/AT521399B1/en active
- 2018-08-21 KR KR2020180003886U patent/KR200494011Y1/en active IP Right Grant
- 2018-08-21 CN CN201821351423.8U patent/CN208951368U/en active Active
-
2019
- 2019-07-10 WO PCT/EP2019/068600 patent/WO2020011881A1/en active Application Filing
- 2019-07-10 CN CN201980045655.1A patent/CN112368498B/en active Active
- 2019-07-10 KR KR1020217001024A patent/KR20210030934A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN112368498A (en) | 2021-02-12 |
| AT521399A1 (en) | 2020-01-15 |
| KR20200000178U (en) | 2020-01-22 |
| AT521399B1 (en) | 2020-09-15 |
| WO2020011881A1 (en) | 2020-01-16 |
| KR20210030934A (en) | 2021-03-18 |
| KR200494011Y1 (en) | 2021-07-15 |
| CN112368498B (en) | 2022-08-23 |
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