CN208287354U - A kind of outlet valve of adjustable cracking pressure - Google Patents
A kind of outlet valve of adjustable cracking pressure Download PDFInfo
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- CN208287354U CN208287354U CN201721921128.7U CN201721921128U CN208287354U CN 208287354 U CN208287354 U CN 208287354U CN 201721921128 U CN201721921128 U CN 201721921128U CN 208287354 U CN208287354 U CN 208287354U
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Abstract
The utility model discloses a kind of outlet valves of adjustable cracking pressure, including valve seat, inside set pilot hole and inlet channel；Valve block is fixedly connected with guide rod, and guide rod correspondence is arranged in pilot hole, and valve block has first side and the second side opposite with first side, and inlet channel is located at the side of first side；When the pressure that first side is subject to is greater than the pressure that second side is subject to, valve block is lifted off a seat to form expiration passageway；When the pressure that second side is subject to is greater than the pressure that first side is subject to, valve block fits closely valve seat；Shell is connect with valve seat, and covers at valve block periphery, and the side of the second side in shell positioned at valve block is equipped with the outlet passageway being in communication with the outside；Further include: pressure regulator is threadedly coupled with shell；Elastic element, between pressure regulator and the second side of valve block；Wherein, pressure regulator and shell, which are connected through a screw thread, adjusts the opposite amount of feeding between the two, to adjust the decrement of elastic element.
Description
Technical field
The utility model relates to a kind of outlet valve more particularly to a kind of outlet valves of adjustable cracking pressure.
Background technique
Air respiratorresuscitator is equipped as a kind of respiratory protection, be widely used to heavy industry, sewage treatment, petroleum, chemical industry,
The fields such as ship handle the severe works such as fire, hazardous materials spillage, smog, anoxic for fireman and relevant staff
Industry scene, to carry out fire source detecting, fire extinguishing, the disaster relief, the work such as speedily carry out rescue work and rescue.
The working principle of air respiratorresuscitator is: air is stored in high pressure gas cylinder in the form of compressed air, opens high pressure gas
When cylinder valve, the pressure-air being stored in high pressure gas cylinder enters pressure reducer by high-pressure gas cylinder valve, and pressure-air is depressurized in
Pressure, middle that pressure pipe in air warp is pressed to enter the steam supply valve being mounted on mask, steam supply valve is required according to the breathing of user, is provided and
From the air in high pressure gas cylinder.When people's air-breathing, steam supply valve is opened, and provides air-flow；When people exhales, steam supply valve is closed, exhalation
Gas be discharged through the outlet valve on mask, when stopping exhaling, outlet valve is closed, and is prepared air-breathing next time, is thus completed
One breath cycle process.
But in the prior art, the opening force of outlet valve is unadjustable.Due to the elasticity member of outlet valve under normal conditions
Part, the production of sealing diaphragm and valve body or assembly there are error, be easy to cause outlet valve opening force and expiratory resistance and
Air-tightness is unstable, to influence assembly efficiency and client's experience on probation, or even will cause security risk.
Based on this, it is desirable to a kind of outlet valve of adjustable cracking pressure is obtained, to correct the elastic element of outlet valve, close
Existing error is assembled in the production of sealer piece and valve body, it is ensured that the mask of air respiratorresuscitator is with stable performance and well
User experience.
Utility model content
The purpose of this utility model is to provide a kind of outlet valve of adjustable cracking pressure, the cracking pressures of the outlet valve
It is adjustable, when the outlet valve is used for air respiratorresuscitator, aerial respiration can be changed by the cracking pressure of adjusting outlet valve
Expiratory resistance in device mask, so that it is guaranteed that the mask of air respiratorresuscitator has stable performance and good user experience.
In order to achieve the above object, the utility model provides a kind of outlet valve of adjustable cracking pressure comprising:
Valve seat, it is interior to be equipped with pilot hole, inlet channel is equipped in the valve seat；
Valve block is fixedly connected with guide rod, and the guide rod correspondence is arranged in the pilot hole, and the valve block has
First side and the second side opposite with first side, the inlet channel are located at the side of first side；Work as first side
When the pressure being subject to is greater than the pressure that second side is subject to, the valve block leaves the valve seat to form expiration passageway；When second
When the pressure that side is subject to is greater than the pressure that first side is subject to, the valve block fits closely the valve seat；
Shell is connect with the valve seat, and covers at the valve block periphery, and second side of valve block is located in the shell
The side in face is equipped with the outlet passageway being in communication with the outside；
The outlet valve of the adjustable cracking pressure further include:
Pressure regulator is threadedly coupled with the shell；
Elastic element is set between the pressure regulator and the second side of valve block；
Wherein, the opposite amount of feeding between the two is adjusted after the pressure regulator and the shell are connected through a screw thread,
To adjust the decrement of elastic element.
In technical solution described in the utility model, by adjusting the pressure regulator being threadedly coupled with shell, make to press
Power regulating part and shell have the opposite amount of feeding, so that the decrement of elastic element is adjusted, so that adjustment effect is in second side
Pressure, to adjust the cracking pressure of adjustable cracking pressure outlet valve described in the utility model.
It should be noted that in technical solution described in the utility model, in some embodiments, shell and valve seat
Junction is equipped with sealing element, to ensure the leakproofness of the outlet valve of adjustable cracking pressure described in the utility model, it is ensured that into
It is logical that user's exhaled gas in gas channel can only be discharged into the outlet communicated with atmosphere by the exhalation passages between valve seat and valve block
Road.
In addition it is also necessary to explanation, in technical solution described in the utility model, in some embodiments, bullet
Property element can have good elastic stability and the material of higher fatigue life be made by spring etc., elastic element it is outer
Shape can be cylindric or circular cone shape (i.e. pagoda shape), and when using spring as elastic element, the cross section of spring wire can
To be designed to round or rectangle.
Further, in the outlet valve of adjustable cracking pressure described in the utility model, the pressure regulator is set
In in the shell, the side wall of pressure regulator has external screw thread, and to be threadedly coupled with the internal screw thread of shell, the pressure is adjusted
The top surface of part has rotation force slot, in order to apply the power for rotating it around own axes to pressure regulator.
In technical solution described in the utility model, the top surface of pressure regulator has rotation force slot, in order to
Pressure regulator applies the power for rotating it around own axes, to adjust the opposite feeding between pressure regulator and shell
Amount, to adjust the decrement of elastic element.It should be noted that exhaling in adjustable cracking pressure described in the utility model
In air valve, in some embodiments, rotation force slot structure can using flat recess, cross recess, interior hexagonal, Nei Wujiao,
The structure of the similar screw head force shape such as interior quadrangle, Triangle ID, outer-hexagonal, Wai Wujiao, outer quadrangle, outer triangle and flower pattern.
Further, the outlet valve of adjustable cracking pressure described in the utility model, further includes: pressure adjusts fastening
Part, the radial direction along pressure regulator passes through the shell, so that the tail end that pressure adjusts fastener is held out against in pressure tune
On the side wall for saving part.
In technical solution described in the utility model, pressure adjusts fastener and passes through along the radial direction of pressure regulator
Shell, so that the tail end that pressure adjusts fastener is held out against on the side wall of pressure regulator, so as to will be elastic in pressure regulator
The decrement of element is adjusted to after necessary requirement, is adjusted by pressure and is held out against effect between fastener and pressure regulator, really
Screw thread between packing pressure regulating part and shell does not loosen, so that it is guaranteed that the decrement of elastic element remains unchanged.
In addition, in the outlet valve of adjustable cracking pressure described in the utility model, in some embodiments, pressure
Adjusting fastener can be using the structure of similar screw.
Further, in the outlet valve of adjustable cracking pressure described in the utility model, the pressure regulator tool
There are the first part being disposed in the housing and the second part outside shell, the side wall of the first part has outer spiral shell
Line, to be threadedly coupled with the internal screw thread of shell, the second part has force periphery, in order to apply to pressure regulator
The power for rotating it around own axes.
In technical solution described in the utility model, the second part of pressure regulator has force periphery, so as to
In to pressure regulator apply rotate it around own axes power, thus adjust between pressure regulator and shell with respect into
To amount, to adjust the decrement of elastic element.
Further, the outlet valve of adjustable cracking pressure described in the utility model, further includes: pressure adjusts fastening
Part passes through the second part of pressure regulator along the radial direction of pressure regulator so that pressure adjusts the tail end top of fastener
Tightly on shell.
In technical solution described in the utility model, pressure adjusts fastener and passes through along the radial direction of pressure regulator
The second part of pressure regulator so that the tail end that pressure adjusts fastener is held out against on shell, so as in pressure regulator by bullet
Property element decrement adjust to after necessary requirement, adjusted by pressure and hold out against effect between fastener and shell, it is ensured that pressed
Screw thread between power regulating part and shell does not loosen, so that it is guaranteed that the decrement of elastic element remains unchanged.
In addition, in the outlet valve of adjustable cracking pressure described in the utility model, in some embodiments, pressure
Adjusting fastener can be using the structure of similar screw.
Further, in the outlet valve of adjustable cracking pressure described in the utility model, the pressure regulator tool
There is the first part being disposed in the housing, the side wall of the first part has external screw thread, with the internal screw thread screw thread with shell
Connection, the top surface of the pressure regulator have rotation force slot, in order to make it around own axes to pressure regulator application
The power of rotation.
In technical solution described in the utility model, the top surface of pressure regulator has rotation force slot, in order to
Pressure regulator applies the power for rotating it around own axes, to adjust the opposite feeding between pressure regulator and shell
Amount, to adjust the decrement of elastic element.It should be noted that exhaling in adjustable cracking pressure described in the utility model
In air valve, in some embodiments, rotation force slot structure can using flat recess, cross recess, interior hexagonal, Nei Wujiao,
The structure of the similar screw head force shape such as interior quadrangle, Triangle ID, outer-hexagonal, Wai Wujiao, outer quadrangle, outer triangle and flower pattern.
Further, in the outlet valve of adjustable cracking pressure described in the utility model, the pressure regulator is also
With the second part protruded in its axial direction from shell, the side wall of the second part is equipped with external screw thread, is equipped with interior
The pressure of screw thread adjusts fastener and is threadedly coupled with the second part.
In technical solution described in the utility model, pressure regulator also has to be protruded from shell in its axial direction
Second part, the side wall of second part is equipped with external screw thread, if internal thread pressure adjusts fastener and described second
Divide and be threadedly coupled, to be adjusted by pressure tight after pressure regulator adjusts the decrement of elastic element to necessary requirement
Effect is screwed between firmware and the second part of pressure regulator, it is ensured that the screw thread between pressure regulator and shell is not loose
It is dynamic, so that it is guaranteed that the decrement of elastic element remains unchanged.
Further, in the outlet valve of adjustable cracking pressure described in the utility model, second side of the valve block
Face is equipped with elastic element locating slot, and "-" type or L-type or the support of U-shaped elastic element are equipped in the elastic element locating slot
Part, the elastic element supporting element are set to the lower section of elastic element.
It certainly, in other implementations, can also be before ensuring that elastic element locating slot wall thickness and rigidity are enough
It puts, and saves elastic element supporting element.
In addition, it should also be noted that, smooth guide rod, axis and valve are equipped among valve block in the technical scheme
Piece axis be overlapped and ensure it is vertical with the big plane of valve block sealed bottom, so as to valve block exhale rise it is steady always in opening process
Rise without skew and card resistance.
In technical solution described in the utility model, the second side of valve block is equipped with elastic element locating slot, so as to
By the way that elastic element to be mounted in elastic element locating slot, it is installed to elastic element on valve block.In addition, elastic element positions
"-" type or L-type or U-shaped elastic element supporting element, in some embodiments, elastic element supporting element can be equipped in slot
It can be made of hard materials such as engineering plastics, light metal materials.In addition, in some embodiments, the elastic element of L-type
Supporting element can be integrated with valve block and guide rod by rubber vulcanization process, form a global facility.
Further, in the outlet valve of adjustable cracking pressure described in the utility model, the valve block is arranged to
With structure gradually thinning from middle part to edge.The structure can ensure that partially thick rigidity is big among the valve block, and edge is relatively thin and soft
Property it is good, meet when exhaling have it is certain tilt effect, the vapour lock to ensure exhalation passages is as small as possible.
In technical solution described in the utility model, valve block is arranged to have knot gradually thinning from middle part to edge
Structure, it is preferable that the cross-sectional shape of valve block is taper, to ensure that elastic element can either be stably installed on valve block, again
The cracking pressure that can reduce the outlet valve of adjustable cracking pressure described in the utility model, in some preferred embodiments
In, when expiration, the edge of valve block is tilted, to ensure lower expiratory resistance.Moreover it is preferred that the outer surface of valve block is using throwing
Sand matte management is so that valve block smooth surface is fine and smooth, and hardness control is between the degree of shore 40 to 60, so as to be effectively ensured
It is tightly bonded with valve seat, it is ensured that the strictly sealing shutdown under non-expiration state of expiration passageway.
It should be noted that in some embodiments, due to the elastic element supporting element and valve block and guide rod of L-type
It is integrated by rubber vulcanization process, forms a global facility, in such embodiment, the middle part and side of valve block
Portion has equally thin thickness, and the elastic element supporter among valve block plays the role of support and positioning elastic element.
Further, in the outlet valve of adjustable cracking pressure described in the utility model, the valve seat connects with valve block
Raised annular convex platform on the end face of touching, when the pressure that second side is subject to is greater than the pressure that first side is subject to, institute
The top surface for stating annular convex platform fits closely the valve block, and the cross section of the annular convex platform is tapered, the top of the annular convex platform
Face is arc-shaped.
In technical solution described in the utility model, raised convex annular on the end face that valve seat is contacted with valve block
Platform, when the pressure that second side is subject to is greater than the pressure that first side is subject to, the top surface of annular convex platform fits closely valve block, ring
The cross section of shape boss is tapered, and the top surface of annular convex platform is arc-shaped, it is preferable that the annular convex platform outer surface has smooth, nothing
The features such as scratch and recess, corrugationless rise and fall and top toroid is coplanar, to ensure that the annular convex platform can be between valve block
It carries out effective uniform close fitting and seals.
Further, in the outlet valve of adjustable cracking pressure described in the utility model, the valve seat connects with valve block
It is additionally provided with annular groove on the end face of touching, in the side that the annular convex platform is located at valve block edge, the cross section of the annular groove is in V
Type is inverted trapezoidal.
In technical solution described in the utility model, it is located at valve on the end face that valve seat is contacted with valve block, in annular convex platform
The side of piece edge is additionally provided with that cross section is V-shaped or inverted trapezoidal annular groove, and air-flow is flipped up when to exhale, thus
Make the gas of exhalation better by expiration passageway.
Further, the outlet valve of adjustable cracking pressure described in the utility model, including pressure adjust locating part,
It is installed in shell, is located at below pressure regulator and is located above valve block.
Above-mentioned pressure adjusting locating part is to prevent when pressure regulator feeds down and adjusts elastic element decrement, mistake
When crossing pressure regulator and shell caused by feeding to be detached from, while ensuring that valve block is lifted off a seat, the valve block can be by pressure
It adjusts locating part bottom end face to be stopped, to prevent valve block aperture excessive.
Certainly, total in other embodiments, the pressure can also be not provided with and adjust locating part.
The outlet valve of adjustable cracking pressure described in the utility model adjusts the pressure of elastic element by pressure regulator
Contracting amount has the outlet valve of adjustable cracking pressure described in the utility model more to adjust the cracking pressure of outlet valve
Good user experience effect, and it is safe and reliable, it can be widely applied to the fields such as air respiratorresuscitator.
Detailed description of the invention
Fig. 1 be adjustable cracking pressure described in the utility model outlet valve under the first embodiment sectional view.
Fig. 2 shows the top view of the outlet valve of adjustable cracking pressure shown in FIG. 1.
Fig. 3 is valve seat of the outlet valve of adjustable cracking pressure described in the utility model under the first embodiment
Sectional view.
Fig. 4 be adjustable cracking pressure described in the utility model valve block of the outlet valve under the first embodiment and
The sectional view of guide rod.
Fig. 5 is section of the outlet valve of adjustable cracking pressure described in the utility model under second of embodiment
Figure.
Fig. 6 is section of the outlet valve of adjustable cracking pressure described in the utility model under the third embodiment
Figure.
Fig. 7 is section of the outlet valve of adjustable cracking pressure described in the utility model under the 4th kind of embodiment
Figure.
Fig. 8 be adjustable cracking pressure described in the utility model valve block of the outlet valve under the 5th kind of embodiment and
The sectional view of guide rod.
Fig. 9 be adjustable cracking pressure described in the utility model valve block of the outlet valve under the 6th kind of embodiment and
The sectional view of guide rod.
Figure 10 is valve block of the outlet valve of adjustable cracking pressure described in the utility model under the 7th kind of embodiment
And the sectional view of guide rod.
Specific embodiment
Below by specific embodiment according to the present utility model and Figure of description to described in the utility model adjustable
The outlet valve of cracking pressure is further described, but the explanation does not constitute improper limits to the present invention.
Embodiment one
As depicted in figs. 1 and 2, the outlet valve of adjustable cracking pressure described in the utility model wraps in the present embodiment
It includes: valve seat 1, valve block 4 and shell 7.Wherein, pilot hole and inlet channel 3 are equipped in valve seat 1, the periphery of valve seat 1 is equipped with sealing ring
17；Valve block 4 is fixedly connected with the corresponding guide rod 5 being arranged in pilot hole, and valve block 4 has first side 41 and and first side
41 opposite second sides 42, inlet channel 3 are located at the side of first side 41；Shell 7 is connect with valve seat 1, and covers at valve
The side of the periphery of piece 4, the interior second side 42 positioned at valve block 4 of shell 7 is equipped with the outlet passageway 8 being in communication with the outside.In addition, should
The outlet valve of adjustable cracking pressure further include: pressure regulator 9A and elastic element 10.Wherein, the side wall of pressure regulator 9A
With external screw thread 9A1, to be threadedly coupled with the internal screw thread of shell 7, elastic element 10 is set to the of pressure regulator 9A and valve block 4
Between two side faces 42.
In this embodiment, elastic element 10 applies downward pressure to valve block 4, so that valve block 4 and valve seat 1 are close
Contact, so that the outlet valve is closed under normal conditions.When the wearer inhales the air, the first side 41 of valve block 4 by negative pressure due to being made
It is acted on the pre-compression force with elastic element 10, and is fitted closely with valve seat 1, so that outlet valve is closed.When user exhales
Out when gas, the gas of exhalation applies pressure to the first side 41 of valve block 4 via inlet channel 3, so that the pressure gram
The pressure that elastic element 10 is applied to second side 42 is taken, so that valve block 4 lifts off a seat 1, outlet valve is opened and formed and exhaled
The gas in road 6, user's exhalation is discharged into the outlet passageway 8 being in communication with the outside by expiration passageway 6.Pressure regulator 9A's
Top surface has rotation force slot 9A2, when to rotation force slot 9A2 applied force so that pressure regulator 9A is rotated around own axes
When, the opposite amount of feeding between adjustable pressure regulator 9A and shell 7, so that the decrement of elastic element 10 is adjusted, with
Adjust the cracking pressure of outlet valve.
In the present embodiment, the outlet valve of adjustable cracking pressure described in the utility model further includes that pressure adjusts limit
Part 16 is installed on inside shell 7.When the pressure regulator 9A slot 9A2 force that exerted a force thereon is fed down towards valve block direction
When decrement to adjust elastic element 10, pressure regulator 9A adjusts the backstop action of locating part 16 due to pressure, without
It is detached from shell 7.In addition, pressure adjust locating part 16 can also limit valve block 4 lift off a seat 1 range, pass through pressure
16 lower end surface of locating part is adjusted to the position-limiting action of 4 top surface of valve block, elastic element 10 can be prevented to be further compressed.
Fig. 3 shows further the structural schematic diagram of valve seat 1 in the present embodiment.As shown in figure 3, in the present embodiment, valve
Seat has the pilot hole 2 passed through for guide rod at 1 center.Raised annular convex platform on the end face that valve seat 1 is contacted with valve block 4
14, when the pressure that second side 42 is subject to is greater than the pressure that first side 41 is subject to, the top surface of annular convex platform 14 and valve block 4 are tight
Closely connected conjunction.In addition, in the present embodiment, the cross section of annular convex platform 14 is tapered, the top surface of annular convex platform 14 is arc-shaped, and ring
The outer surface of shape boss 14 have it is smooth, rise and fall without scratch and recess, corrugationless, to ensure that the annular convex platform 14 can be with valve block
It is effectively sealed between 4.In addition, in the present embodiment, being located on the end face that valve seat 1 is contacted with valve block 4, in annular convex platform 14
The side of 4 edge of valve block is additionally provided with annular groove 15, and the cross section of annular groove 15 can be designed to V-type or inverted trapezoidal, so that
Air-flow is flipped up when expiration, to make the gas of exhalation better by expiration passageway 6.
Fig. 4 shows further the structure of the present embodiment middle valve plate 4.As shown in figure 4, in the present embodiment, valve block 4 is set
Being set to has structure gradually thinning from middle part to edge.Wherein middle part is thicker enables elastic element 10 to obtain on valve block 4
It obtains and supports relatively stablely, and the relatively thin cracking pressure that can reduce outlet valve of edge.In addition, the second side 42 of valve block 4
It is equipped with elastic element locating slot 12, elastic element supporting element inside can be set.
It should be noted that in the present embodiment, as shown in Figure 2, rotation force slot 9A2 is flat recess.And at other
Embodiment in, the rotation force slot 9A2 can also be arranged to cross recess, interior hexagonal, Nei Wujiao, interior quadrangle, Triangle ID, outer six
The structure of the similar screw head such as angle, Wai Wujiao, outer quadrangle, outer triangle and flower pattern.
In addition, in the present embodiment, elastic element 10 can be spring, shape can be cylindric or circular cone shape,
The cross section of spring wire can be designed to round or rectangle.
Embodiment two
In the present embodiment, the outlet valve of adjustable cracking pressure described in the utility model has basic with embodiment one
Identical structure, therefore the present embodiment repeats no more the structure being the same as example 1, emphasis description herein and embodiment
One different structure.
As shown in figure 5, being additionally provided with pressure in the present embodiment adjusts fastener 11A.Pressure adjusts fastener 11A along pressure tune
The radial direction for saving part 9A passes through shell 7, so that the tail end 11A1 that pressure adjusts fastener 11A is held out against pressure regulator 9A's
On side wall, to be adjusted by pressure tight after pressure regulator 9A adjusts the decrement of elastic element 10 to necessary requirement
Effect is held out against between firmware 11A and pressure regulator 9A, it is ensured that the screw thread between pressure regulator 9A and shell 7 does not loosen,
So that it is guaranteed that the decrement of elastic element 10 remains unchanged.
Embodiment three
In the present embodiment, the outlet valve of adjustable cracking pressure described in the utility model, which has, is different from embodiment one
With the pressure regulator of embodiment two.For other structures same as the previously described embodiments, details are not described herein.
As shown in fig. 6, in the present embodiment, pressure regulator 9B has the first part 9B1 being set in shell 7 and is set to
Second part 9B2 outside shell 7.Wherein, the side wall of first part 9B1 has external screw thread 9B11, the internal screw thread spiral shell with shell 7
Line connection, second part 9B2 have force periphery 9B21.When user applies twisting resistance to force periphery 9B21, pressure
Power regulating part 9B can be rotated around own axes, so that opposite feeding occurs between pressure regulator 9B and shell 7, and then be adjusted
Save the decrement of elastic element 10.
In addition, in the present embodiment, being additionally provided with pressure and adjusting fastener 11A, along the radial direction of pressure regulator 9B
Across pressure regulator 9B second part 9B2 so that pressure adjust fastener 11A tail end 11A1 hold out against on shell 7, with
Just after pressure regulator 9B adjusts the decrement of elastic element 10 to necessary requirement, by pressure adjust fastener 11A with
Effect is held out against between shell 7, it is ensured that the screw thread between pressure regulator 9B and shell 7 does not loosen, so that it is guaranteed that elastic element
10 decrement remains unchanged.
Example IV
In the present embodiment, the outlet valve of adjustable cracking pressure described in the utility model, which has, is different from embodiment
One, the pressure regulator of embodiment two and embodiment three.It is no longer superfluous herein for other structures same as the previously described embodiments
It states.
As shown in fig. 7, in the present embodiment, pressure regulator 9C has the first part 9C1 being set in shell 7 and at it
The second part 9C2 protruded on axial direction from shell 7.Wherein, the side wall of first part 9C1 has external screw thread 9C11, with
The internal screw thread of shell 7 is threadedly coupled, and the side wall of second part 9C2 is equipped with external screw thread 9C21, if internal thread pressure is adjusted
Fastener 11B is sheathed on outside second part 9C2, and is threadedly coupled with it, so as in pressure regulator 9C by elastic element 10
Decrement is adjusted to after necessary requirement, between the second part 9C2 that fastener 11B and pressure regulator 9C is adjusted by pressure
Screw effect, it is ensured that the screw thread between pressure regulator 9C and shell 7 does not loosen, so that it is guaranteed that the decrement of elastic element 10 is protected
It holds constant.
In addition, in the present embodiment, the top surface of pressure regulator 9C also has rotation force slot 9C3, in order to pressure tune
Section part 9C applies the power for rotating it around own axes, so that the opposite amount of feeding between pressure regulator 9C and shell 7 is adjusted,
To adjust the decrement of elastic element 10.
It should be noted that in the present embodiment, the structure of rotation force slot 9C3 can be using flat recess, cross recess, interior
The similar screw head such as hexagonal, Nei Wujiao, interior quadrangle, Triangle ID, outer-hexagonal, Wai Wujiao, outer quadrangle, outer triangle and flower pattern
Structure.
Embodiment five
Unlike the various embodiments described above, in the present embodiment, as shown in figure 8, the elastic element locating slot 12 of valve block 4
It is interior to be equipped with "-" type elastic element supporting element 13A, when elastic element is placed in elastic element locating slot 12, "-" type elasticity
Supporting device 13A can play a supporting role to elastic element, so that the elastic element for preventing material harder is relatively soft by material
Valve block 4 be crushed.
Embodiment six
Unlike embodiment five, in the present embodiment, as shown in figure 9, being set in the elastic element locating slot 12 of valve block 4
There is U-shaped elastic element supporting element 13B, when elastic element is placed in elastic element locating slot 12, U-shaped elastic element supporting element
13B can play a supporting role to elastic element, so that the elastic element for preventing material harder presses the relatively soft valve block 4 of material
It bursts.In addition, can also be seen that the outer of the vertical section at the middle part of the U-shaped elastic element supporting element 13B close to valve block 4 from Fig. 9
Side wall be it is inclined towards the middle part of valve block 4 from top to bottom, this structure can tightly embrace valve block intermediate lands, and then make
Guide rod among valve block is not easily to fall off, and ensures that its axis is vertical with valve block sealing surface.
Embodiment seven
Unlike embodiment five and embodiment six, in the present embodiment, as shown in Figure 10, valve block 18 is no longer therefrom
Portion is to edge gradually thinning structure, but middle part and edge have almost the same thickness.In addition, valve block 18, guide rod 5 with
And the elastic element supporting element 13C of L-type is integrated by rubber vulcanization process, forms a global facility.
In a further embodiment, elastic member can also be opened up on the valve block 4 as shown in embodiment five and embodiment six
Part locating slot 12, and L-type elastic element supporting element is equipped in elastic element locating slot 12.
It should be noted that in the above embodiments, elastic element supporting element can use engineering plastics, light metal material
The hard materials such as material are made.
It can be seen that the outlet valve of adjustable cracking pressure described in the utility model adjusts elasticity by pressure regulator
The decrement of element makes the expiration of adjustable cracking pressure described in the utility model to adjust the cracking pressure of outlet valve
Valve has better user experience effect, and safe and reliable, can be widely applied to the fields such as air respiratorresuscitator.
It should be noted that prior art part is not limited to present specification institute in the protection scope of the utility model
The embodiment provided, all prior arts not contradicted with the embodiment of the utility model, including but not limited to first patent
Document, first public publication, formerly openly use etc., it can all be included in the protection scope of the utility model.
In addition, in this case in the combination of each technical characteristic and unlimited this case claim documented combination or
It is combination documented by specific embodiment, all technical characteristics that this case is recorded can be freely combined in any way
Or combine, unless generating contradiction between each other.
It is also to be noted that embodiment enumerated above is only specific embodiment of the utility model.This obvious reality
Above embodiments are not limited to novel, the similar variation or deformation made therewith are that those skilled in the art can be practical new from this
What type disclosure immediately arrived at or was easy to just to associate, it all should belong to the protection range of the utility model.
Claims (12)
1. a kind of outlet valve of adjustable cracking pressure comprising:
Valve seat, it is interior to be equipped with pilot hole, inlet channel is equipped in the valve seat；
Valve block is fixedly connected with guide rod, and the guide rod correspondence is arranged in the pilot hole, and the valve block has first
Side and the second side opposite with first side, the inlet channel are located at the side of first side；When first side by
Pressure be greater than second side be subject to pressure when, the valve block leaves the valve seat to form expiration passageway；Work as second side
When the pressure being subject to is greater than the pressure that first side is subject to, the valve block fits closely the valve seat；
Shell is connect with the valve seat, and covers at the valve block periphery, positioned at the second side of valve block in the shell
Side is equipped with the outlet passageway being in communication with the outside；
It is characterized in that, the outlet valve further include:
Pressure regulator is threadedly coupled with the shell；
Elastic element is set between the pressure regulator and the second side of valve block；
Wherein, the pressure regulator and the shell, which are connected through a screw thread, adjusts the opposite amount of feeding between the two, to adjust
The decrement of elastic element.
2. the outlet valve of adjustable cracking pressure as described in claim 1, which is characterized in that the pressure regulator is set to institute
It states in shell, the side wall of pressure regulator has external screw thread, to be threadedly coupled with the internal screw thread of shell, the pressure regulator
Top surface has rotation force slot, in order to apply the power for rotating it around own axes to pressure regulator.
3. the outlet valve of adjustable cracking pressure as claimed in claim 2, which is characterized in that further include: pressure adjusts fastening
Part, the radial direction along pressure regulator passes through the shell, so that the tail end that pressure adjusts fastener is held out against in pressure tune
On the side wall for saving part.
4. the outlet valve of adjustable cracking pressure as described in claim 1, which is characterized in that the pressure regulator, which has, to be set
There is external screw thread in the side wall of the intracorporal first part of the shell and the second part outside shell, the first part, with
It is threadedly coupled with the internal screw thread of shell, the second part has force periphery, in order to make it to pressure regulator application
The power rotated around own axes.
5. the outlet valve of adjustable cracking pressure as claimed in claim 4, which is characterized in that further include: pressure adjusts fastening
Part passes through the second part of pressure regulator along the radial direction of pressure regulator so that pressure adjusts the tail end top of fastener
Tightly on shell.
6. the outlet valve of adjustable cracking pressure as described in claim 1, which is characterized in that the pressure regulator, which has, to be set
There is external screw thread in the side wall of the intracorporal first part of the shell, the first part, to be threadedly coupled with the internal screw thread of shell,
The top surface of the pressure regulator has rotation force slot, in order to rotate it around own axes to pressure regulator application
Power.
7. the outlet valve of adjustable cracking pressure as claimed in claim 6, which is characterized in that the pressure regulator also has
The side wall of the second part protruded in its axial direction from shell, the second part is equipped with external screw thread, is equipped with internal screw thread
Pressure adjust fastener be threadedly coupled with the second part.
8. the outlet valve of the adjustable cracking pressure as described in any one of claim 1-7, which is characterized in that the valve block
Second side be equipped with elastic element locating slot, "-" type or L-type or U-shaped elasticity are equipped in the elastic element locating slot
Supporting device, the elastic element supporting element are set to the lower section of elastic element.
9. the outlet valve of the adjustable cracking pressure as described in any one of claim 1-7, which is characterized in that the valve block
It is arranged to that there is structure gradually thinning from middle part to edge.
10. the outlet valve of the adjustable cracking pressure as described in any one of claim 1-7, which is characterized in that the valve
Raised annular convex platform on the end face that seat is contacted with valve block, when the pressure that second side is subject to is greater than what first side was subject to
When pressure, the top surface of the annular convex platform fits closely the valve block, and the cross section of the annular convex platform is tapered, the annular
The top surface of boss is arc-shaped.
11. the outlet valve of adjustable cracking pressure as claimed in claim 10, which is characterized in that the valve seat is contacted with valve block
End face on, in the side that the annular convex platform is located at valve block edge be additionally provided with annular groove, the cross section of the annular groove is V-shaped
Or it is inverted trapezoidal.
12. the outlet valve of the adjustable cracking pressure as described in any one of claim 1-7, which is characterized in that further include
Pressure adjusts locating part, is installed in shell, is located at below pressure regulator and is located above valve block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721921128.7U CN208287354U (en) | 2017-12-29 | 2017-12-29 | A kind of outlet valve of adjustable cracking pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721921128.7U CN208287354U (en) | 2017-12-29 | 2017-12-29 | A kind of outlet valve of adjustable cracking pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208287354U true CN208287354U (en) | 2018-12-28 |
Family
ID=64697944
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721921128.7U Active CN208287354U (en) | 2017-12-29 | 2017-12-29 | A kind of outlet valve of adjustable cracking pressure |
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| Country | Link |
|---|---|
| CN (1) | CN208287354U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112915416A (en) * | 2021-03-23 | 2021-06-08 | 深圳市俊雅泽商贸有限公司 | Can collect breathing and produce comdenstion water and prevent respirator that drips |
-
2017
- 2017-12-29 CN CN201721921128.7U patent/CN208287354U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112915416A (en) * | 2021-03-23 | 2021-06-08 | 深圳市俊雅泽商贸有限公司 | Can collect breathing and produce comdenstion water and prevent respirator that drips |
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