CN208474570U - one-way valve - Google Patents
one-way valve Download PDFInfo
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- CN208474570U CN208474570U CN201820840229.XU CN201820840229U CN208474570U CN 208474570 U CN208474570 U CN 208474570U CN 201820840229 U CN201820840229 U CN 201820840229U CN 208474570 U CN208474570 U CN 208474570U
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- 238000007789 sealing Methods 0.000 claims abstract description 94
- 230000009471 action Effects 0.000 claims abstract description 10
- 230000004323 axial length Effects 0.000 claims description 5
- 239000012530 fluid Substances 0.000 abstract description 80
- 230000000694 effects Effects 0.000 abstract description 8
- 230000006378 damage Effects 0.000 abstract description 5
- 230000003139 buffering effect Effects 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 238000013461 design Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 230000005764 inhibitory process Effects 0.000 description 4
- 239000013043 chemical agent Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 206010020852 Hypertonia Diseases 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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- Check Valves (AREA)
Abstract
The utility model discloses a check valve belongs to fluid control technical field. The one-way valve comprises a valve body, a valve cover, a rigid sealing assembly and a flexible sealing assembly. The utility model discloses in, when this check valve of fluid flow through, because the rigidity seal assembly is to the sealed of first central through-hole, lead to the fluid to produce the impact to the rigidity seal assembly to switch on first central through-hole and a plurality of first runner, produce cushioning effect to the fluid simultaneously. Due to the buffering effect of the rigid sealing assembly, the impact force of the fluid is reduced, and when the fluid flows into the first groove, the flexible sealing assembly is prevented from being damaged. And under the impact action of the fluid on the flexible sealing assembly, the first groove and the plurality of second flow passages are communicated, so that the fluid flows into the second central through hole and flows out of the one-way valve. Thus, under the double sealing of the rigid sealing component and the flexible sealing component, the leakage of the fluid is avoided, and the damage of the fluid to the sealing performance of the one-way valve is also avoided.
Description
Technical field
The utility model relates to fluid control technology field, in particular to a kind of check valve.
Background technique
In the development process of oil gas field, in order to guarantee that oil/gas well steadily normally produces in oil gas field, it will usually will rise
The chemical agents such as infusion or methanol are injected into the production tree or production flow line of well head by check valve.Currently, substantially using close
The conveying that the check valve that spool is rigidity carries out foaming agent or methanol etc. is sealed, however, if the hypertonia of conveying, is easy to
The sealing surface of sealed valve core is damaged, to reduce the sealing performance of rigid seal spool.If the hypotony of conveying,
Since the leakproofness of rigid seal spool is poor, it is easy to the leakage of the chemical agents such as foaming agent or methanol is caused, to make
At serious consequences such as environmental pollutions.
Utility model content
The utility model provides a kind of check valve, can solve the sealing performance of check valve, while avoiding doing environment
At pollution.The technical solution is as follows:
The utility model provides a kind of check valve, and the check valve includes valve body, valve deck, rigid seal component and flexibility
Seal assembly；
It is provided with the first central through hole on the valve body, is provided with the second central through hole on the valve deck, in described first
The center line of heart through-hole and the center line of second central through hole are located along the same line, the first end of the valve body with it is described
The first end of valve deck is tightly connected, and the inner cavity of the valve body is connected to first central through hole and second central through hole；
The rigid seal component is in step-like and is located in the inner cavity of the valve body, the rigid seal component top external diameter
Big one end is fixedly connected with the inner wall of the inner cavity of the valve body, and the end face of the big one end of outer diameter is provided with the first groove, institute
The side for stating the small one end of rigid seal component top external diameter is provided with multiple first runners, each first runner and described first recessed
Slot connection, the small one end of the rigid seal component top external diameter are used to be sealed first central through hole, and in external force
Effect lower conducting first central through hole and the multiple first runner；
The flexible sealing component is located in the inner cavity of the valve body, the first end of the flexible sealing component and the valve
The end face of the first end of lid is fixedly connected, and the side of the flexible sealing component is provided with multiple second flow channels, each second
Road is connected to second central through hole, and the second end of the flexible sealing component is used to be sealed first groove,
And first groove and the multiple second flow channel are connected under external force.
Optionally, the check valve further includes bushing；
The inner cavity of the valve body is in step-like, and for the step surface of the inner cavity of the valve body towards the valve deck, the rigidity is close
The step face contact of the inner cavity of the step surface of sealing assembly and the valve body, the cylindrical structure of bushing, the one of the bushing
The end face of one end big with the rigid seal component top external diameter is held to contact, the first of the other end of the bushing and the valve deck
The end face at end contacts, and the flexible sealing component is located in the inner cavity of the bushing.
Optionally, the rigid seal component includes main valve clack, the first guide rod, multiple first springs and the first spring
Seat；
First spring base is in step-like structure, is provided with third central through hole on first spring base, and described the
The big one end of one spring base top external diameter is fixedly connected with the inner wall of the inner cavity of the valve body, and the end face setting of the big one end of outer diameter
There is first groove, the center line of the third central through hole and the center line of first groove are located along the same line,
The side of first spring base is provided with the multiple first runner, the end face of the small one end of the first spring base top external diameter
It is provided with and one-to-one multiple second grooves of the multiple first spring；
One end of each first spring is located in corresponding second groove, the other end and the main valve of each first spring
The first end of valve connects, and the first end of the main valve clack is also fixedly connected with one end of first guide rod, and described first leads
It is located in the third central through hole to the other end of bar, and can be slided along the third central through hole, the main valve clack
Second end is for being sealed first central through hole under the action of the multiple first spring.
Optionally, the rigid seal component further includes the first position-limiting drum, one end of first position-limiting drum and described the
The end face of the small one end of one spring base top external diameter is fixedly connected, and first position-limiting drum is less than first bullet along axial length
Maximum axial distance between the end face of the first end of the end face and main valve clack of the small one end of spring abutment top external diameter.
Optionally, first guide rod and the main valve clack design for integral type, first position-limiting drum and described the
One spring base designs for integral type.
Optionally, the flexible sealing component includes secondary flap, the second guide rod, multiple second springs and second spring
Seat；
The outer diameter of the second spring seat be less than the valve body inner cavity internal diameter, the first end of the second spring seat with
The end face of the first end of the valve deck is fixedly connected, and is provided with the 4th central through hole on the second spring seat, in described second
The center line of heart through-hole and the center line of the 4th central through hole are located along the same line, and the side of the second spring seat is set
It is equipped with the multiple second flow channel, the end face of the second end of the second spring seat is provided with the multiple second spring one by one
Corresponding multiple third grooves；
One end of each second spring is located in corresponding third groove, the other end of each second spring and the secondary valve
The first end of valve connects, and the first end of the secondary flap is also fixedly connected with one end of second guide rod, and described second leads
It is located in the 4th central through hole to the other end of bar, and can be slided along the 4th central through hole, the secondary flap
Second end is for being sealed first groove under the action of the multiple second spring.
Optionally, second guide rod and the secondary flap design for integral type, the second spring seat and the valve
Lid designs for integral type.
Optionally, the flexible sealing component further includes gasket and fixing screws, and the fixing screws are used for will be described
Gasket is fixed on the end face of the second end of the secondary flap.
Optionally, the flexible sealing component further includes washer, and the washer is located at the gasket and the fixed spiral shell
Between nail.
Optionally, the check valve further includes O-ring seals, between the valve body and the valve deck and the rigidity
The O-ring seals are provided between the inner wall of the inner cavity of seal assembly and the valve body.
The beneficial effect of technical solution provided by the utility model includes at least:
In the utility model, after connecting valve body with valve deck, rigid seal component and flexibility are set in the inner cavity of valve body
Seal assembly.When fluid flows through the check valve through the first central through hole, since rigid seal component is to the first central through hole
The end face of sealing, the one end for causing fluid small to rigid seal component top external diameter generates impact, that is to say, to rigid seal component
The end face of the small one end of top external diameter generates active force, at this point, the small one end of rigid seal component top external diameter can be big to outer diameter
The direction of one end moves, thus the first central through hole of conducting and multiple first runners, while buffer function is generated to fluid, it reduces
The flowing pressure of fluid.After fluid flows into the first groove, since the flowing pressure of fluid reduces, to avoid fluid to soft
It is destroyed caused by property seal assembly.Meanwhile in the fluid in the first groove under the percussion of flexible sealing component, at this point,
The second end of flexible sealing component 4 can be moved to the direction of first end, thus the first groove of conducting and multiple second flow channels, with
So that fluid is flowed into the second central through hole, and flows out the check valve.In this way, in the dual of rigid seal component and flexible sealing component
Under sealing, the leakage of fluid is avoided, it is thus also avoided that fluid is destroyed caused by the leakproofness of check valve.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of check valve provided by the embodiment of the utility model；
Fig. 2 is a kind of structural schematic diagram of check valve provided by the embodiment of the utility model；
Fig. 3 is a kind of structural schematic diagram of rigid seal component provided by the embodiment of the utility model；
Fig. 4 is a kind of structural schematic diagram of flexible sealing component provided by the embodiment of the utility model；
Fig. 5 is a kind of structural schematic diagram of flexible sealing component provided by the embodiment of the utility model.
Appended drawing reference:
1: valve body；2: valve deck；3: rigid seal component；4: flexible sealing component；5: bushing；6:O shape sealing ring；
101: the first central through holes；201: the second central through holes；
301: the first grooves；302: first runner；303: main valve clack；304: the first guide rods；305: the first springs；306:
First spring base；307: third central through hole；308: the second grooves；309: the first position-limiting drums；310: chamfering；
401: second flow channel；402: secondary flap；403: the second guide rods；404: second spring；405: second spring seat；
406: the four central through holes；407: third groove；408: gasket；409: fixing screws；410: washer；411: the second limits
Cylinder.
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type embodiment is described in further detail.
Fig. 1 is a kind of structural schematic diagram of check valve provided by the embodiment of the utility model.Referring to Fig. 1, check valve includes
Valve body 1, valve deck 2, rigid seal component 3 and flexible sealing component 4.The first central through hole 101 is provided on valve body 1, on valve deck 2
It is provided with the second central through hole 201, the center line of the center line of the first central through hole 101 and the second central through hole 201 is located at same
On one straight line, the first end of valve body 1 and the first end of valve deck 2 are tightly connected, and the inner cavity of valve body 1 is connected to the first central through hole
101 and second central through hole 201.Rigid seal component 3 is in step-like and is located in the inner cavity of valve body 1, on rigid seal component 3
The big one end of outer diameter is fixedly connected with the inner wall of the inner cavity of valve body 1, and the end face of the big one end of outer diameter is provided with the first groove
301, the side of the small one end of 3 top external diameter of rigid seal component is provided with multiple first runners 302, each first runner 302 with
The connection of first groove 301, the small one end of 3 top external diameter of rigid seal component are used to be sealed the first central through hole 101, and
The first central through hole 101 and multiple first runners 302 are connected under external force.Flexible sealing component 4 is located at the inner cavity of valve body 1
In, the first end of flexible sealing component 4 is fixedly connected with the end face of the first end of valve deck 2, the side setting of flexible sealing component 4
There are multiple second flow channels 401, each second flow channel 401 is connected to the second central through hole 201, the second end of flexible sealing component 4
For being sealed to the first groove 301, and the first groove 301 and multiple second flow channels 401 are connected under external force.
Wherein, screw thread has can be set in the inner wall of the first end of valve body 1, and the side of the first end of valve deck 2 can be set
Screw thread that is to say that the first end of valve body 1 is provided with internal screw thread, and the first end of valve deck 2 is provided with external screw thread, in this way, can pass through
The mode of threaded connection realizes being fixedly connected between valve body 1 and valve deck 2.Certainly, the first of the first end of valve body 1 and valve deck 2
Flange has can be set in end, to realize the fixed company valve body 1 and valve deck 2 by bolt hole of the bolt on flange
It connects, the utility model embodiment does not limit this.
It should be noted that the valve body 1 and valve deck 2 in Fig. 1 are a kind of illustrative structures, and certainly, valve body 1 and valve deck 2
It is also possible to other structures.For example, valve body 1 is the structure in Fig. 1, valve deck 2 can be set to lid cap-like structure, in order to incite somebody to action
Valve deck 2 and is fixedly connected by the first end cover of valve deck 2 in the first end of valve body 1 with valve body 1.At this point, the first end of valve body 1
Screw thread has can be set in side, and the inner wall of the first end of valve deck 2 can be set screw thread, that is to say, the first end setting of valve body 1
There is external screw thread, the first end of valve deck 2 is provided with internal screw thread, in this way, the mode that can be connected through a screw thread realizes valve body 1 and valve deck
Being fixedly connected between 2.
The small one end of 3 top external diameter of rigid seal component is towards the first central through hole 101, and the big one end of outer diameter is towards in second
Heart through-hole 201, the sealing in order to the small one end of 3 top external diameter of rigid seal component to the first central through hole 101.Rigid seal group
Part 3 not only can for that in step-like cylindrical structure, can also be structure of the rotary table with cylinder in conjunction with, rotary table top external diameter greatly one
End with one end of cylinder can be integral type connect, the small one end of rotary table top external diameter can be used for the first central through hole 101 into
Row sealing.Multiple first runners 302, and multiple has can be set in the side of the small one end of 3 top external diameter of rigid seal component
One runner 302 can be distributed uniformly and circumferentially, and certainly, multiple first runners 302 can also be with random distribution, the utility model
Embodiment does not limit this.Preferably, multiple first runners 302 can be distributed uniformly and circumferentially, to avoid multiple
When first runner 302 is unevenly distributed, distribution of forces of the fluid in the axial direction along rigid seal component 3 is uneven, causes
Rigid seal component 3 bears active force in a circumferential direction, and then may cause the inner cavity of rigid seal component 3 and valve body 1
Connection between inner wall loosens.In one possible implementation, the side of the small one end of 3 top external diameter of rigid seal component can
To be provided with 4 first runners 302, certainly, the side of the small one end of 3 top external diameter of rigid seal component is also provided with 6
Or 8 first runners 302 etc..
Flexible sealing component 4 can be greater than the interior of the first groove 301 with cylindrical structure, the outer diameter of flexible sealing component 4
Diameter, and the center line of flexible sealing component 4 and the center line of the first groove 301 are located on the same line, in order to flexibility
The second end of seal assembly 4 can be sealed the first groove 301.The side of flexible sealing component 4 can be set multiple
Second flow channel 401, and multiple second flow channel 401 can be distributed uniformly and circumferentially, certainly, multiple second flow channel 401
It can not also be limited this with random distribution, the utility model embodiment.Preferably, multiple second flow channels 401 can be circumferentially
Direction is uniformly distributed, and to avoid when multiple second flow channels 401 are unevenly distributed, fluid is in the axial direction of flexible sealing component 4
Distribution of forces it is uneven, cause flexible sealing component 4 to bear active force in a circumferential direction, and then may cause flexible close
Connection between sealing assembly 4 and valve deck 2 loosens.In one possible implementation, the side of flexible sealing component 4 can be set
4 second flow channels 401 are equipped with, certainly, 6 or 8 second flow channels 401 etc. have can be set in the side of flexible sealing component 4.
When fluid flows through the check valve through the first central through hole 101, since rigid seal component 3 is to the first central through hole
The end face of 101 sealing, the one end for causing fluid small to 3 top external diameter of rigid seal component generates impact, that is to say, close to rigidity
The end face of the small one end of 3 top external diameter of sealing assembly generates active force, at this point, the small one end of 3 top external diameter of rigid seal component can be to
The direction of the big one end of outer diameter moves, thus the first central through hole 101 of conducting and multiple first runners 302.Rigid seal simultaneously
The end face of the small one end of 3 top external diameter of component can also generate buffer function to fluid, reduce the flowing pressure of fluid, therefore,
After fluid flows into the first groove 301, since the flowing pressure of fluid reduces, so that fluid be avoided to cause flexible sealing component 4
Destruction.Simultaneously as sealing of the second end of flexible sealing component 4 to the first groove 301, causes in the first groove 301
Fluid generates impact to the second end face of flexible sealing component 4, at this point, the second end of flexible sealing component 4 can be to first end
Direction movement, thus conducting the first groove 301 and multiple second flow channels 401 so that fluid flows into the second central through hole 201,
And flow out the check valve.In this way, avoiding the infiltration of fluid under the dual-seal of rigid seal component 3 and flexible sealing component 4
Leakage, it is thus also avoided that fluid is destroyed caused by the leakproofness of check valve.
When fluid reversely flows into the check valve along the second central through hole 201, due to the second end pair of flexible sealing component 4
First groove 301 forms sealing, so as to avoid fluid from flowing to the first groove 301 from multiple second flow channels 401, to avoid
The reverse circulated of fluid.Further, after breakage occurs for flexible sealing component 4, since 3 top external diameter of rigid seal component is small
One end the first central through hole 101 is sealed, so that the fluid for avoiding flowing to multiple first runners 302 is logical along the first center
Flow out the check valve in hole 101.Therefore, which can be in the dual-seal of flexible sealing component 4 and rigid seal component 3
Under, prevent the reverse circulated of fluid.
It is small to 3 top external diameter of rigid seal component in order to avoid fluid because pressure is higher when fluid flows through the check valve
The end face of one end damages, and then influences the leakproofness between rigid seal component 3 and the first central through hole 101, referring to figure
2, chamfering 310 has can be set in the small one end of 3 top external diameter of rigid seal component, in this way, the first central through hole 101 of conducting with it is more
After a first runner 302, fluid can flow to multiple first runners 302 along the inclined-plane of chamfering 310, to avoid fluid to rigidity
The edge of the end face of the small one end of 3 top external diameter of seal assembly damages, and improves rigid seal component 3 and the first central through hole
Leakproofness between 101.
In addition, in order to avoid fluid valve body 1 and valve deck 2 junction and rigid seal component 3 and valve body 1 it is interior
Junction between the inner wall of chamber leaks, and referring to fig. 2, which can also include O-ring seals 6, in this way, valve body 1
Junction between the inner wall of the inner cavity of junction and rigid seal component 3 and valve body 1 between valve deck 2 can be set
O-ring seals 6 are equipped with, that is to say, O-ring seals 6 are set between valve deck 2 and the contact surface of valve body 1, in the inner cavity of valve body 1
Inner wall and the big one end of 3 top external diameter of rigid seal component side between O-ring seals 6 are set, to improve valve deck 2 and valve
Sealing performance between the inner wall of the inner cavity of sealing performance and rigid seal component 3 and valve body 1 between body 1.
Further, between valve deck 2 and the contact surface of valve body 1, and inner wall and rigid seal in the inner cavity of valve body 1
When O-ring seals 6 are set between the side of the big one end of 3 top external diameter of component, in order to avoid sealing ring occur irregular deformation or
Phenomena such as person's deflection, influences the sealing effect of O-ring seals 6, the position that can also be contacted on valve body 1 with valve deck 2 and/or valve
The position setting circumferential groove contacted on lid 2 with valve body 1, side and/or valve in the big one end of 3 top external diameter of rigid seal component
Circumferential groove is arranged in the position that the inner wall of the inner cavity of body 1 is connect with rigid seal component 3, to be sealed by circumferential groove to O shape
Circle 6 is positioned.Wherein, the depth of circumferential groove can be less than one of the difference between the outer diameter and internal diameter of O-ring seals 6
Half, to realize the extruding to O-ring seals 6, realize between valve body 1 and valve deck 2 and rigid seal component 3 and valve body 1 it is interior
Better seal between the inner wall of chamber.
Wherein, when rigid seal component 3 to be fixedly connected with the inner wall of the inner cavity of valve body 1, in a kind of possible realization
In mode, external screw thread can be set in the side of 3 top external diameter of rigid seal component big one end, the inner wall in the inner cavity of valve body 1
Internal screw thread is set, and then the mode being connected through a screw thread realizes being fixedly connected for rigid seal component 3 and the inner cavity of valve body 1.
Certainly, in alternatively possible implementation, referring to fig. 2, the check valve can also include bushing 5, valve body 1 it is interior
Chamber in step-like, the step surface of the inner cavity of valve body 1 towards valve deck 2, the inner cavity of the step surface and valve body 1 of rigid seal component 3
The end face of step face contact, the cylindrical structure of bushing 5, one end of bushing 5 one end big with 3 top external diameter of rigid seal component connects
Touching, the other end of bushing 5 are contacted with the end face of the first end of valve deck 2, and flexible sealing component 4 is located in the inner cavity of bushing 5.
In this way, one end of bushing 5 can be withstood on rigid seal component 3 during screwing valve deck 2 and valve body 1
The end face of the big one end of outer diameter, the other end of bushing 5 can withstand on the end face of the first end of valve deck 2, simultaneously as rigid seal
The step face contact of the inner cavity of the step surface and valve body 1 of component 3, therefore, rigid seal component 3 is stuck in the platform of the inner cavity of valve body 1
Between terrace and one end of bushing 5, to rigid seal component 3 is fixed in the inner cavity of valve body 1, rigid seal component is realized
Being fixedly connected between 3 and the inner wall of the inner cavity of valve body 1.
It should be noted that the second end of flexible sealing component 4 is transported under the impact of fluid to the direction close to first end
When dynamic, the axial distance between the end face of the first end of flexible sealing component 4 and the end face of second end reduces.It that is to say, soft
When the second end of property seal assembly 4 is sealed the first groove 301, the end face of the first end of flexible sealing component 4 and second
Axial distance between the end face at end is maximum.The axial length of bushing 5 can be equal to the end face of the first end of flexible sealing component 4
Maximum axial distance between the end face of second end, certainly, the axial distance of bushing 5 also can be slightly less than flexible sealing group
Maximum axial distance between the end face of the first end of part 4 and the end face of second end, as long as after screwing valve deck 2 and valve body 1, lining
The length of set 5 does not influence the sealing of the first groove of second end 301 of flexible sealing component 4, the utility model embodiment pair
This is without limitation.
Maximum axial distance between the end face of the first end of flexible sealing component 4 and the end face of second end refers in flexibility
When the second end of seal assembly 4 is sealed the first groove 301, the end face of the first end of flexible sealing component 4 and second end
End face between axial distance.
When being sealed by rigid seal component 3 to the first central through hole 101, in a kind of possible implementation
In, referring to Fig. 3, rigid seal component 3 may include main valve clack 303, the first guide rod 304, multiple first springs 305 and first
Spring base 306.First spring base 306 is in step-like structure, is provided with third central through hole 307 on the first spring base 306, and first
The big one end of 306 top external diameter of spring base is fixedly connected with the inner wall of the inner cavity of valve body 1, and the end face of the big one end of outer diameter is provided with
First groove 301, the center line of third central through hole 307 and the center line of the first groove 301 are located along the same line, the first bullet
The side of spring abutment 306 is provided with multiple first runners 302, the end face of the small one end of 306 top external diameter of the first spring base be provided with
One-to-one multiple second grooves 308 of multiple first springs 305.One end of each first spring 305 is located at corresponding second
In groove 308, the other end of each first spring 305 is connect with the first end of main valve clack 303, and the first end of main valve clack 303 is also
It is fixedly connected with one end of the first guide rod 304, the other end of the first guide rod 304 is located in third central through hole 307, and energy
Enough to slide along third central through hole 307, the second end of main valve clack 303 is used under the action of multiple first spring 305 to first
Central through hole 101 is sealed.
Due to sealing of the second end to the first central through hole 101 of main valve clack 303, fluid is flowed along the first central through hole 101
Through when the check valve can end face face to the second end of main valve clack 303 generate impact, and then promote main valve clack 303 to close to the
The direction of one spring base 306 moves, while generating compression to multiple first springs 305.At this point, main valve clack 303 is first
It is moved under the guiding role of guide rod 304, and the first central through hole 101 and multiple first runners 302 is connected, so that fluid is along more
A first runner 302 flows into the first groove 301.When the first central through hole 101 of the check valve does not have fluid inflow, main valve clack
303 can be sealed the first central through hole 101 under the elastic reaction of multiple first springs 305, to avoid fluid edge
At least one first runner 302 flow to the first central through hole 101, avoids the reverse circulated of fluid.
Wherein, external screw thread has can be set in the side of the big one end of 306 top external diameter of the first spring base, to realize and valve body 1
The inner wall of inner cavity be fixedly connected, it is of course also possible, as described before, the first spring base 306 can also be fixed on the step of the inner cavity of valve body 1
Between face and bushing 5, to realize that the first spring base 306 is fixedly connected with the inner wall of the inner cavity of valve body 1.
Multiple second grooves 308 can be uniformly distributed along the circumferencial direction of the first spring base 306, to guarantee multiple first bullets
Spring 305 is uniformly distributed, thus when avoiding main valve clack 303 to close to the movement of the first spring base 306, because multiple first springs 305 divide
Cloth is uneven, causes the active force acted on main valve clack 303 uneven, to cause 303 run-off the straight of main valve clack.Main valve clack
303 can be with cylindrical structure, can also be with structure in a circular table shape, naturally it is also possible to and it is structure of the cylinder in conjunction with rotary table, as long as
The second end of main valve clack 303 can be sealed the first central through hole 101, and the utility model embodiment does not limit this
It is fixed.It should be noted that the small one end of 303 top external diameter of main valve clack can be used for the when main valve clack 303 is round-like structure
One central through hole 101 is sealed, when main valve clack 303 is structure of the cylinder in conjunction with rotary table, the big one end of rotary table top external diameter
It can be connect with one end of cylinder, the small one end of rotary table top external diameter can be used for being sealed the first central through hole 101.
First guide rod 304 can be prismatic structure, it is of course also possible to cylindrical-shaped structure, the first guide rod 304 and the
It can be gap-contact between three central through holes 307, with guarantee can between the first guide rod 304 and third central through hole 307
There is fluid to flow through, when avoiding moving in main valve clack 303 to the direction close to the first spring base 306, main valve clack 303 and the first spring
Fluid between seat 306 generates resistance to main valve clack 303.The first end of one end of first guide rod 304 and main valve clack 303 can be with
It is fixedly connected by welding, it is, of course, also possible to the first guide rod 304 is designed as integral type with main valve clack 303,
The utility model embodiment does not limit this.
When moving in main valve clack 303 to the direction close to the first spring base 306, the internal diameter of the first groove 301 may be bigger
In the outer diameter of the first guide rod 304, at this point, the first groove is protruded into the one end not connecting with main valve clack 303 on the first guide rod 304
After 301, the gap between the first groove 301 and the first guide rod 304 is smaller, it is easy to the stream flowed out along first runner 302
Body generates inhibition.Therefore, referring to Fig. 3, rigid seal component 3 can also include the first position-limiting drum 309, the first position-limiting drum
The end face of 309 one end one end small with 306 top external diameter of the first spring base is fixedly connected, and the first position-limiting drum 309 is along axial length
Spend the maximum axis between the end face of one end small less than 306 top external diameter of the first spring base and the end face of the first end of main valve clack 303
To distance.
It wherein, can be in the first position-limiting drum 309 when being moved in main valve clack 303 to the direction close to the first spring base 306
Under effect, the movement position of main valve clack 303 is limited, end face and the first spring to avoid the first end of main valve clack 303
Axial distance between the end face of the small one end of 306 top external diameters of seat is smaller, cause on the first guide rod 304 not with main valve clack 303
After the first groove 301 is protruded into one end of connection, inhibition is generated to the fluid flowed out along first runner 302.First spring base
Maximum axial distance between the end face of the first end of the end face and main valve clack 303 of the small one end of 306 top external diameters refers in main valve
When the second end of valve 303 is sealed the first central through hole 101, the end face of the first end of main valve clack 303 and the first spring base
Axial distance between the end face of the small one end of 306 top external diameters.Multiple first springs 305 can be located at the first position-limiting drum 309
Inner cavity, in this way, the outer diameter of the first position-limiting drum 309 can be equal to the outer diameter of the small one end of 306 top external diameter of the first spring base.Certainly,
There may also be the outsides that at least one first spring 305 is located at the first position-limiting drum 309 in multiple first springs 305, this is practical
New embodiment does not limit this.
Wherein, the shock in order to avoid main valve clack 303 to the first position-limiting drum 309 leads to the first position-limiting drum 309 and the first bullet
It is loosened between spring abutment 306, it in one possible implementation, can be by the first position-limiting drum 309 and the first spring base 306
It is fixedly connected in a welding manner.It is, of course, also possible to which the first position-limiting drum 309 and the design of the first spring base 306 are integrated
Formula, the utility model embodiment do not limit this.
When being sealed by flexible sealing component 4 to the first groove 301, in one possible implementation, ginseng
See that Fig. 4, flexible sealing component 4 may include secondary flap 402, the second guide rod 403, multiple second springs 404 and second spring
Seat 405.The outer diameter of second spring seat 405 is less than the internal diameter of the inner cavity of valve body 1, first end and the valve deck 2 of second spring seat 405
The end face of first end is fixedly connected, and is provided with the 4th central through hole 406 on second spring seat 405, in the second central through hole 21
Heart line and the center line of the 4th central through hole 406 are located along the same line, and the side of second spring seat 405 is provided with multiple second
Runner 401, the end face of the second end of second spring seat 405 are provided with and the one-to-one multiple thirds of multiple second springs 404
Groove 407.One end of each second spring 404 is located in corresponding third groove 407, the other end of each second spring 404
It being connect with the first end of secondary flap 402, the first end of secondary flap 402 is also fixedly connected with one end of the second guide rod 403, and second
The other end of guide rod 403 is located in the 4th central through hole 406, and can slide along the 4th central through hole 406, secondary flap 402
Second end for being sealed under the action of multiple second spring 404 to the first groove 301.
Sealing due to secondary flap 402 to the first groove 301, fluid can be to secondary flaps 402 when flowing into the first groove 301
The end face of second end generate impact, and then promote secondary flap 402 to move to close to the direction of second spring seat 405, while right
Multiple second springs 404 generate compression.At this point, secondary flap 402 moves under the guiding role of the second guide rod 403, and
The first groove 301 and multiple second flow channels 401 is connected, so that fluid flows out the check valve along the second central through hole 21.In the list
When not having fluid inflow to the first central through hole 11 of valve, secondary flap 402 can be under the elastic reaction of multiple second springs 404
First groove 301 is sealed, so that fluid be avoided to flow to the first groove 301 along multiple second flow channels 401, avoids fluid
Reverse circulated.
Wherein, second spring seat 405 can be fixed by welding with valve deck 2, certainly, second spring seat
405 do not limit this with valve deck 2 or unitary design, the utility model embodiment.Second spring seat 405 can be in
Cylindrical-shaped structure, at this point, the outer diameter of second spring seat 405 is less than the internal diameter of the inner cavity of valve body 1.Certainly, second spring seat 405 is gone back
It can be other structures, for example, second spring seat 405 can be with structure in a circular table shape, or in step-like cylindrical structure, this
Sample, the maximum outside diameter of second spring seat 405 can be less than or equal to the internal diameter of the inner cavity of valve body 1, and outer on second spring seat 405
The big one end of diameter is towards valve deck 2, and the small one end of outer diameter is towards rigid seal component 3, in order to the sealing to the first groove 301.
When the outer diameter of the big one end of 405 top external diameter of second spring seat is equal to the internal diameter of the inner cavity of valve body 1, second spring seat 405 can be with
It is directly fixedly connected, can also be fixedly connected with the end face of the first end of valve deck 2 with the inner wall of the inner cavity of valve body 1, it certainly, can also
To be fixed under the extruding of valve deck 2, at this point, bushing 5 can be withstood between second spring seat 405 and rigid seal component 3.
Multiple third grooves 407 can be uniformly distributed along the circumferencial direction of second spring seat 405, to guarantee multiple second bullets
Spring 404 is uniformly distributed, thus when avoiding secondary flap 402 to close to the movement of second spring seat 405, because multiple second springs 404 are divided
Cloth is uneven, causes the active force acted in secondary flap 402 uneven, to cause 402 run-off the straight of secondary flap.Secondary flap
402 can be with cylindrical structure, can also be with structure in a circular table shape, as long as the second end of secondary flap 402 can be to the first groove 301
It is sealed, the utility model embodiment does not limit this.It should be noted that when secondary flap 402 is round table-like knot
When structure, the small one end of 402 top external diameter of secondary flap is for being sealed the first groove 301.
Second guide rod 403 can be prismatic structure, it is of course also possible to cylindrical-shaped structure, the second guide rod 403 and the
It can be gap-contact between four central through holes 406, with guarantee can between the second guide rod 403 and the 4th central through hole 406
There is fluid to flow through, when avoiding moving in secondary flap 402 to the direction close to second spring seat 405, secondary flap 402 and second spring
Fluid between seat 405 generates resistance to secondary flap 402.The first end of one end of second guide rod 403 and secondary flap 402 can be with
It is fixedly connected by welding, it is, of course, also possible to the second guide rod 403 is designed as integral type with secondary flap 402,
The utility model embodiment does not limit this.
It should be noted that in order to improve the second end of secondary flap 402 to the sealing effect of the first groove 301, referring to figure
5, flexible sealing component 4 can also include gasket 408 and fixing screws 409, and fixing screws 409 can be used for gasket
408 are fixed on the end face of the second end of secondary flap 402.Since elastic deformation can occur under external force for gasket 408, when
When the second end of secondary flap 402 is sealed the first groove 301, the gasket 408 that the second end of secondary flap 402 is fixed can
The end face of one end big with 3 top external diameter of rigid seal component abuts under the elastic reaction of multiple second springs 404, to improve
Sealing effect between secondary flap 402 and the first groove 301.
Wherein, the outer diameter of gasket 408 is greater than the internal diameter of the first groove 301, and the center line of gasket 408 can be with the
The center line of one groove 301 is located at same straight line.Fixing bolt can be hexagon socket head cap screw, it is of course also possible to be other bolts,
As long as gasket 408 can be fixed on to the end face of the second end of secondary flap 402, the utility model embodiment does not do this
It limits.
At the end face for the second end that gasket 408 is fixed on secondary flap 402 by fixing bolt, due to fixing bolt
It is smaller to the fixed-area of gasket 408, under the impact of fluid, it is easy to cause gasket 408 to fall off from fixing bolt,
Therefore, referring to Fig. 5, flexible sealing component 4 can also include washer 410, and washer 410 is located at gasket 408 and fixing screws 409
Between.In this way, fixing bolt can be improved by washer 410 to the fixed-area of gasket 408, to avoid gasket 408
Fall off.
When moving in secondary flap 402 to the direction close to second spring seat 405, the aperture of the second central through hole 201 may
Slightly larger than the outer diameter of the second guide rod 403, at this point, the one end not connecting with secondary flap 402 on the second guide rod 403 passes through the 4th
Central through hole 406, and after protruding into the second central through hole 201, the gap between the second central through hole 201 and the second guide rod 403
It is smaller, it is easy to which that inhibition is generated to the fluid flowed out along second flow channel 401.Therefore, referring to Fig. 5, flexible sealing component 4 is also
It may include the second position-limiting drum 411, the end face of the second end of one end and second spring seat 405 of the second position-limiting drum 411 is fixed to be connected
It connects, the second position-limiting drum 411 is less than the end face and the first of secondary flap 402 of the second end of second spring seat 405 along axial length
Maximum axial distance between the end face at end.
It wherein, can be in the second position-limiting drum 411 when being moved in secondary flap 402 to the direction close to second spring seat 405
Under effect, the movement position of secondary flap 402 is limited, end face and second spring to avoid the first end of secondary flap 402
Axial distance between the end face of the second end of seat 405 is smaller, causes not connect with secondary flap 402 on the second guide rod 403
After the second central through hole 201 is protruded into one end, inhibition is generated to the fluid flowed out along second flow channel 401.Second spring seat 405
Second end end face and secondary flap 402 first end end face between maximum axial distance refer to the of secondary flap 402
When the first groove of two port 301 is sealed, the second end of the end face and second spring seat 405 of the first end of secondary flap 402
Axial distance between end face.Multiple second springs 404 can be located at the inner cavity of the second position-limiting drum 411, in this way, the second position-limiting drum
411 outer diameter can be equal to the outer diameter of second spring seat 405.Certainly, there may also be at least one in multiple second springs 404
Second spring 404 is located at the outside of the second position-limiting drum 411, and the utility model embodiment does not limit this.
Wherein, the shock in order to avoid secondary flap 402 to the second position-limiting drum 411 leads to the second position-limiting drum 411 and the second bullet
It is loosened between spring abutment 405, it in one possible implementation, can be by the second position-limiting drum 411 and second spring seat 405
It is fixedly connected in a welding manner.It is, of course, also possible to which the second position-limiting drum 411 and the design of second spring seat 405 are integrated
Formula, the utility model embodiment do not limit this.
In the utility model embodiment, when fluid flows into the check valve through the first central through hole, since main valve clack is to
The sealing of one central through hole causes fluid to generate impact to the end face of the second end of main valve clack, to promote main valve clack to close
The direction of first spring base moves, the first central through hole and multiple first runners is connected.Main valve clack generates fluid slow simultaneously
Punching effect, reduces the flowing pressure of fluid, therefore, after fluid flows into the first groove along multiple first runners, due to fluid
Flowing pressure reduces, to avoid fluid destruction caused by flexible sealing component.Simultaneously as secondary flap is to the first groove
Sealing causes fluid in the first groove to generate impact to the end face of the second end of secondary flap, to promote secondary flap to close
The direction of second spring seat moves, the first groove and multiple second flow channels is connected, so that fluid flows into the second central through hole, and
Flow out the check valve.In this way, avoiding the leakage of fluid, it is thus also avoided that fluid under the dual-seal of main valve clack and secondary flap
It is destroyed caused by the leakproofness of check valve.When fluid reversely flows into the check valve along the second central through hole, due to secondary flap
The first groove is formed under the action of multiple second springs and is sealed, so as to avoid fluid from flowing to the from multiple second flow channels
One groove, so as to avoid the reverse circulated of fluid.Further, after secondary flap occurs damaged, since main valve clack is multiple
The first central through hole is sealed under the action of first spring, to avoid the fluid for flowing to multiple first runners along first
Heart through-hole flows out the check valve.Therefore, which can prevent the anti-of fluid under the dual-seal of secondary flap and main valve clack
To circulation, the sealing performance of the check valve is improved.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (10)
1. a kind of check valve, which is characterized in that the check valve includes valve body (1), valve deck (2), rigid seal component (3) and soft
Property seal assembly (4)；
It is provided with the first central through hole (101) on the valve body (1), is provided with the second central through hole on the valve deck (2)
(201), the center line of first central through hole (101) and the center line of second central through hole (201) are located at always
On line, the first end of the valve body (1) and the first end of the valve deck (2) are tightly connected, and the inner cavity connection of the valve body (1)
First central through hole (101) and second central through hole (201)；
The rigid seal component (3) is in step-like and is located in the inner cavity of the valve body (1), the rigid seal component (3)
The big one end of top external diameter is fixedly connected with the inner wall of the inner cavity of the valve body (1), and the end face of the big one end of outer diameter is provided with
The side of one groove (301), the small one end of rigid seal component (3) top external diameter is provided with multiple first runners (302), often
A first runner (302) is connected to first groove (301), and the small one end of rigid seal component (3) top external diameter is used for
First central through hole (101) is sealed, and be connected under external force first central through hole (101) with it is described
Multiple first runners (302)；
The flexible sealing component (4) is located in the inner cavity of the valve body (1), the first end of the flexible sealing component (4) with
The end face of the first end of the valve deck (2) is fixedly connected, and the side of the flexible sealing component (4) is provided with multiple second flow channels
(401), each second flow channel (401) is connected to second central through hole (201), and the second of the flexible sealing component (4)
First groove (301) and described more is connected for being sealed to first groove (301) in end under external force
A second flow channel (401).
2. check valve as described in claim 1, which is characterized in that the check valve further includes bushing (5)；
The inner cavity of the valve body (1) in step-like, the step surface of the inner cavity of the valve body (1) towards the valve deck (2), it is described just
Property seal assembly (3) step surface and the valve body (1) inner cavity step face contact, the cylindrical structure of the bushing (5),
One end of the bushing (5) is contacted with the end face of big one end of rigid seal component (3) top external diameter, the bushing (5)
The other end is contacted with the end face of the first end of the valve deck (2), and the flexible sealing component (4) is located at the interior of the bushing (5)
In chamber.
3. check valve as claimed in claim 1 or 2, which is characterized in that the rigid seal component (3) includes main valve clack
(303), the first guide rod (304), multiple first springs (305) and the first spring base (306)；
First spring base (306) is in step-like structure, is provided with third central through hole on first spring base (306)
(307), the big one end of the first spring base (306) top external diameter is fixedly connected with the inner wall of the inner cavity of the valve body (1), and outer
The end face of the big one end of diameter is provided with first groove (301), the center line of the third central through hole (307) and described the
The center line of one groove (301) is located along the same line, and the side of first spring base (306) is provided with the multiple first
The end face of runner (302), the small one end of the first spring base (306) top external diameter is provided with and the multiple first spring
(305) one-to-one multiple second grooves (308)；
One end of each first spring (305) is located in corresponding second groove (308), each first spring (305) it is another
End connect with the first end of the main valve clack (303), the first end of the main valve clack (303) also with first guide rod
(304) one end is fixedly connected, and the other end of first guide rod (304) is located in the third central through hole (307), and
It can be slided along the third central through hole (307), the second end of the main valve clack (303) is used in the multiple first spring
(305) first central through hole (101) is sealed under the action of.
4. check valve as claimed in claim 3, which is characterized in that the rigid seal component (3) further includes the first position-limiting drum
(309), the end face of one end of first position-limiting drum (309) one end small with the first spring base (306) top external diameter is fixed
Connection, first position-limiting drum (309) are less than the end of the small one end of the first spring base (306) top external diameter along axial length
Maximum axial distance between the end face of the first end of face and the main valve clack (303).
5. check valve as claimed in claim 4, which is characterized in that first guide rod (304) and the main valve clack (303)
It is designed for integral type, first position-limiting drum (309) and first spring base (306) are designed for integral type.
6. check valve as claimed in claim 1 or 2, feature exist, the flexible sealing component (4) include secondary flap (402),
Second guide rod (403), multiple second springs (404) and second spring seat (405)；
The outer diameter of the second spring seat (405) is less than the internal diameter of the inner cavity of the valve body (1), the second spring seat (405)
First end be fixedly connected with the end face of the first end of the valve deck (2), be provided in the 4th on the second spring seat (405)
Heart through-hole (406), the center line of second central through hole (201) and the center line of the 4th central through hole (406) are located at
On same straight line, the side of the second spring seat (405) is provided with the multiple second flow channel (401), the second spring
The end face of the second end of seat (405) is provided with and the one-to-one multiple third grooves of the multiple second spring (404)
(407)；
One end of each second spring (404) is located in corresponding third groove (407), each second spring (404) it is another
End connect with the first end of the secondary flap (402), the first end of the secondary flap (402) also with second guide rod
(403) one end is fixedly connected, and the other end of second guide rod (403) is located in the 4th central through hole (406), and
It can be slided along the 4th central through hole (406), the second end of the secondary flap (402) is used in the multiple second spring
(404) first groove (301) is sealed under the action of.
7. check valve as claimed in claim 6, which is characterized in that second guide rod (403) and the secondary flap (402)
It is designed for integral type, the second spring seat (405) and the valve deck (2) are designed for integral type.
8. check valve as claimed in claim 6, which is characterized in that the flexible sealing component (4) further includes gasket (408)
With fixing screws (409), the fixing screws (409) are used to the gasket (408) being fixed on the secondary flap (402)
The end face of second end.
9. check valve as claimed in claim 8, which is characterized in that the flexible sealing component (4) further includes washer (410),
The washer (410) is between the gasket (408) and the fixing screws (409).
10. check valve as described in claim 1, which is characterized in that the check valve further includes O-ring seals (6), the valve
Between body (1) and the valve deck (2) and between the inner wall of the inner cavity of the rigid seal component (3) and the valve body (1)
It is provided with the O-ring seals (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820840229.XU CN208474570U (en) | 2018-05-31 | 2018-05-31 | one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820840229.XU CN208474570U (en) | 2018-05-31 | 2018-05-31 | one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208474570U true CN208474570U (en) | 2019-02-05 |
Family
ID=65215825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820840229.XU Active CN208474570U (en) | 2018-05-31 | 2018-05-31 | one-way valve |
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| Country | Link |
|---|---|
| CN (1) | CN208474570U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094554A (en) * | 2019-04-26 | 2019-08-06 | 江苏圣泰阀门有限公司 | A kind of double-flap check valve |
| CN112594425A (en) * | 2021-02-03 | 2021-04-02 | 上海开恒光岳机械制造有限公司 | Pressure measuring joint sealing mechanism |
| CN112628430A (en) * | 2021-02-02 | 2021-04-09 | 上海开恒光岳机械制造有限公司 | One-way valve sealing mechanism |
-
2018
- 2018-05-31 CN CN201820840229.XU patent/CN208474570U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094554A (en) * | 2019-04-26 | 2019-08-06 | 江苏圣泰阀门有限公司 | A kind of double-flap check valve |
| CN110094554B (en) * | 2019-04-26 | 2020-07-24 | 江苏圣泰阀门有限公司 | Double-valve-clack check valve |
| CN112628430A (en) * | 2021-02-02 | 2021-04-09 | 上海开恒光岳机械制造有限公司 | One-way valve sealing mechanism |
| CN112594425A (en) * | 2021-02-03 | 2021-04-02 | 上海开恒光岳机械制造有限公司 | Pressure measuring joint sealing mechanism |
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