CN206918339U - A kind of screw down nonreturn valve - Google Patents
A kind of screw down nonreturn valve Download PDFInfo
- Publication number
- CN206918339U CN206918339U CN201720878226.0U CN201720878226U CN206918339U CN 206918339 U CN206918339 U CN 206918339U CN 201720878226 U CN201720878226 U CN 201720878226U CN 206918339 U CN206918339 U CN 206918339U
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- valve
- flap
- valve body
- transmission mechanism
- depression bar
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Abstract
The utility model discloses a kind of screw down nonreturn valve, comprise at least：Valve body, flap, elastomeric element and transmission mechanism；The valve body is hollow structure；The flap is arranged in the hollow structure；The transmission mechanism makes connection or cut-off between two chambers to the flap applying power；The transmission mechanism has flanged structure；One end of the elastomeric element contacts with the flanged structure, the other end of the elastomeric element and the valve flap contacts；Cavity is formed between the inwall of the hollow structure, the flap and the transmission mechanism；The side wall of the valve body has medium channel；The medium channel connects the inner chamber of the valve body and the cavity.When valve member is closed, medium enters cavity from the inner chamber of valve member through the medium channel on valve body, flap is by the essentially identical medium active force in opposite direction of size, so as to efficiently reduce the value of making a concerted effort that medium acts on flap, operational torque value is not only reduced, and ensure that valve member does not damage.
Description
Technical field
It the utility model is related to field of mechanical technique, more particularly to a kind of screw down nonreturn valve.
Background technology
Existing ship hydraulic pipeline external screw thread screw down nonreturn valve is state's tender --- CB597-1990《External screw thread steel is straight
Angle screw down nonreturn valve》, it is as follows to presently, there are major defect：
Valve member is without balance cavity configuration.When valve member is closed, the medium active force at primary sealing area will all act on valve rod,
When valve member latus rectum is larger, pressure is higher, the active force acted on valve rod is also larger, on the one hand can increase manually operated torque
Value, on the other hand can exceed the song intensity in the wrong of valve rod and occuring bending and deformation causes the damage of valve member.
Utility model content
The utility model solves medium active force in the prior art and all acted on by providing a kind of screw down nonreturn valve
The technical problem of valve rod, realize and reduce the technique effect that operational torque value is not damaged with guarantee valve member.
The utility model provides a kind of screw down nonreturn valve, comprises at least：Valve body, flap, elastomeric element and transmission mechanism；
The valve body is hollow structure；The flap is arranged in the hollow structure；The transmission mechanism to the flap applying power,
Make connection or cut-off between two chambers；The transmission mechanism has flanged structure；One end of the elastomeric element and the flange
Form touch, the other end of the elastomeric element and the valve flap contacts；The inwall of the hollow structure, the flap and described
Cavity is formed between transmission mechanism；The side wall of the valve body has medium channel；The medium channel connects the inner chamber of the valve body
With the cavity.
Further, the transmission mechanism comprises at least：Handwheel, valve rod and depression bar；The handwheel is fixed with the valve rod
Connection；The valve rod has external screw thread；The valve body has tapped through hole；The valve rod passes through the tapped through hole；The valve rod with
The spacing connection of depression bar, the convert rotational motion for making the valve rod are the linear motion of the depression bar, and the flap is applied
Power；There is the flanged structure on the depression bar.
Further, the end of the valve rod is bending structure；There is bending groove in the end of the depression bar；The bending
Structure setting is in the bending groove；
Or,
There is bending groove in the end of the valve rod；The end of the depression bar is bending structure；The bending structure is set
In the bending groove.
Further, there is the scale of different height on the valve rod, be used to refer to the on off state of the valve body.
Further, the transmission mechanism also comprises at least：Bushing；The bushing is enclosed on the depression bar；It is described hollow
The cavity is formed between the inwall of structure, the flap and the bushing.
Further, it is provided with sealing ring between the bushing and the depression bar；In the bushing and the hollow knot
Sealing ring is provided between the inwall of structure.
Further, the flap and the valve body are linear sealing.
Further, the end face of the flap is curved surface；There is boss the inside of the valve body, and the boss is plane；
The curved surface and the plane are linear contact lay.
The one or more technical schemes provided in the utility model, have at least the following technical effects or advantages：
Cavity is formed between the inwall, flap and transmission mechanism of the hollow structure of valve body；There is medium in the side wall of valve body
Passage, and the inner chamber of medium channel connection valve body and cavity.When valve member is closed, medium is from the inner chamber of valve member through valve
Medium channel on body enters cavity, and flap is by the essentially identical medium active force in opposite direction of size, so as to effectively reduce
Medium acts on the value of making a concerted effort of flap, not only reduces operational torque value, and ensure that valve member does not damage.
Brief description of the drawings
Fig. 1 is the structural representation for the screw down nonreturn valve that the utility model embodiment provides；
Fig. 2 is the enlarged drawing at I in Fig. 1；
Fig. 3 is the enlarged drawing at II in Fig. 1；
Fig. 4 is the structural representation of valve seat in Fig. 1；
Fig. 5 is the structural representation of bonnet in Fig. 1；
Fig. 6 is the structural representation of valve rod in Fig. 1；
Fig. 7 is the structural representation of depression bar in Fig. 1；
Fig. 8 is the structural representation of elastomeric element in Fig. 1；
Wherein, 1- valve seats, 2- flaps, 3- depression bars, 4- bonnets, 5- valve rods, 6- elastomeric elements, 7- handwheels, 8- bushings, 9- spiral shells
Mother, 11- sealing rings, 12- medium channels.
Embodiment
It is whole to solve medium active force in the prior art by providing a kind of screw down nonreturn valve for the utility model embodiment
The technical problem of valve rod is acted on, realizes and reduces the technique effect that operational torque value is not damaged with guarantee valve member.
The technical scheme in the embodiment of the utility model is to solve the above problems, general thought is as follows：
Cavity is formed between the inwall, flap and transmission mechanism of the hollow structure of valve body；There is medium in the side wall of valve body
Passage, and the inner chamber of medium channel connection valve body and cavity.When valve member is closed, medium is from the inner chamber of valve member through valve
Medium channel on body enters cavity, and flap is by the essentially identical medium active force in opposite direction of size, so as to effectively reduce
Medium acts on the value of making a concerted effort of flap, not only reduces operational torque value, and ensure that valve member does not damage.
In order to more fully understand above-mentioned technical proposal, below in conjunction with Figure of description and specific embodiment to upper
Technical scheme is stated to be described in detail.
The screw down nonreturn valve provided referring to Fig. 1, Fig. 2 and Fig. 3, the utility model embodiment, is comprised at least：Valve body, flap
2nd, elastomeric element 6 and transmission mechanism；Valve body is hollow structure；Flap 2 is arranged in hollow structure；Transmission mechanism is applied to flap 2
Reinforcing, make connection or cut-off between two chambers；Transmission mechanism has flanged structure；One end of elastomeric element 6 connects with flanged structure
Touch, the other end of elastomeric element 6 contacts with flap 2, carries out non-return sealing by transmission mechanism elasticity of compression part 6, and provide
Flap 2 resets and required non-return sealing force.Cavity is formed between the inwall of hollow structure, flap 2 and transmission mechanism；Valve body
Side wall has medium channel 12；Medium channel 12 connects inner chamber and the cavity of valve body.
Referring to Fig. 4 and Fig. 5, the structure of valve body is illustrated, valve body comprises at least：Valve seat 1 and bonnet 4；Valve seat 1 is different
Footpath hollow structure；Bonnet 4 is also hollow structure；The inwall in the large diameter portion of valve seat 1 has screw thread, and the outer wall of bonnet 4 has screw thread；Valve
Lid 4 is connected through a screw thread with valve seat 1；Cavity is formed between valve seat 1, bonnet 4, flap 2 and transmission mechanism.
Referring to Fig. 6 and Fig. 7, the structure of transmission mechanism is illustrated, transmission mechanism comprises at least：Handwheel 7, valve rod 5 and
Depression bar 3；Handwheel 7 is fixedly connected with valve rod 5；Valve rod 5 has external screw thread；Valve body has tapped through hole；Valve rod 5 passes through tapped through hole；Valve
Bar 5 and 3 spacing connection of depression bar, the convert rotational motion for making valve rod 5 is the linear motion of depression bar 3, to the applying power of flap 2；Depression bar 3
On have flanged structure.
In the present embodiment, installation fixation is carried out to handwheel 7 by hex nut 9.
More specifically, the end of valve rod 5 is bending structure；There is bending groove in the end of depression bar 3；Bending structure is arranged on
In bending groove；
Or,
There is bending groove in the end of valve rod 5；The end of depression bar 3 is bending structure；Bending structure is arranged on bending groove
In.
In the present embodiment, bending structure is T connector, and bending groove is T-slot.
Referring to Fig. 8, specifically, elastomeric element 6 is helical compression spring, and helical compression spring is enclosed on depression bar 3, and in helical compression spring
Mandrel line and valve body center line, the center line of depression bar 3 are strictly coaxial, so as to ensure that valve member handwheel 7 rotate when valve rod 5 uniformly by
Power, and then reduce the operational torque of valve rod 5.
In order to indicate the on off state of valve body, there is the scale of different height on valve rod 5, coordinate with bonnet 4 and refer to
Show the on off state of valve body.
The structure of transmission mechanism is further described, transmission mechanism also comprises at least：Bushing 8；Bushing 8 is enclosed on depression bar
On 3；Cavity is formed between the inwall of hollow structure, flap 2 and bushing 8.
The structure of bushing 8 is illustrated, there is flange the end of bushing 8；Flange is arranged in the large diameter portion of valve seat 1；
There is through hole at the center of bushing 8；The end of flap 2 passes through the through hole.Bonnet 4 is pressed on the flange of bushing 8, so as to prevent bushing
8 along its axial float.
In order to increase the sealing of the utility model embodiment, sealing ring 11 is provided between bushing 8 and depression bar 3；
Sealing ring 11 is provided between bushing 8 and the inwall of hollow structure.
The structure of the utility model embodiment is illustrated, flap 2 and valve body are linear sealing.
Specifically, the end face of flap 2 is curved surface；There is boss the inside of valve body, and boss is plane；Curved surface and plane are line
Contact.
【Technique effect】
1st, cavity is formed between the inwall of hollow structure, flap 2 and transmission mechanism of valve body；There is Jie in the side wall of valve body
Matter passage 12, and medium channel 12 connects inner chamber and the cavity of valve body.When valve member is closed, medium is out of valve member
Chamber enters cavity through the medium channel 12 on valve body, and flap 2 is by the essentially identical medium active force in opposite direction of size, so as to have
The value of making a concerted effort that medium acts on flap 2 is reduced to effect, not only reduces operational torque value, and ensure that valve member does not damage.
The 2nd, elastomeric element 6 is installed, when valve member is in non-return state, by the elastic force of elastomeric element 6, no on flap 2
It is only capable of effectively overcoming resistance during 2 non-return of flap, and the non-return sealing force of non-return state lower Disc 2 can also be increased, so as to subtracts
The minimum back pressure of small valve member.For conventional ship mark valve member, the reliability of non-return sealing is drastically increased, even if
Good non-return effect can be also realized under low pressure.
3rd, valve rod 5 and 3 spacing connection of depression bar, the convert rotational motion for making valve rod 5 is the linear motion of depression bar 3, to flap 2
Applying power, i.e., transmission mechanism valve rod 5 and the two parts of depression bar 3 are divided into, so as to efficiently reduce the length of pressure containing part depression bar 3
Footpath ratio, and then improve the rigidity of depression bar 3.In addition, by the convert rotational motion of valve rod 5 be depression bar 3 linear motion, avoid because
Valve rod 5, which rotates, makes sealing ring produce torsional deflection, not only extends the service life of sealing ring, and also improve sealed reliable
Property.
4th, by the use to sealing ring 11, avoid packing seal, substantially increase valve member failure-free operation number,
Improve the reliability of the axial seal of valve rod 5, reduce moment of friction and axially mounted size, realize the small-sized of valve member structure
Change.
5th, flap 2 and valve body are linear sealing, reduce sealing area, not only when containing impurity in medium, main valve face is not
Breakage easily occurs, so as to improve the sealing reliability in main valve face.And required seal pressure is small, valve rod can be efficiently reduced
5 axial force, the axial force of valve rod 5 and the operational torque of handwheel 7 can not only be reduced, and can also improve each part of valve member by
Power state.For conventional ship mark valve member, operation is more light, is sealed at main valve face relatively reliable.Moreover, when ball seals
After abrasion, sealing surface can move down along sealing cone, automatic to realize compensation, further increase the sealing reliability in main valve face.
The utility model embodiment be related to a kind of long-life, back pressure is low, operational torque is small, operation is light, sealing can
It is high, easy to maintenance by property, the small ship hydraulic pipeline external screw thread screw down nonreturn valve of contour structure size.As designed by this embodiment
DN25, PN160 right-angle type fluid pressure line external screw thread screw down nonreturn valve, its bulk life time be up to 30 years, sealed reliable, rapid wear
The part life-span is not less than 5 years, can realize 10,000 failure-free operation, and maximum height is only 200mm, and weight is less than 4Kg, and maximum opens and closes
Moment values are within 15Nm, minimum back pressure value 0.1MPa.
Although having been described for preferred embodiment of the present utility model, those skilled in the art once know substantially
Creative concept, then other change and modification can be made to these embodiments.So appended claims are intended to be construed to wrap
Include preferred embodiment and fall into having altered and changing for the scope of the utility model.
Obviously, those skilled in the art can carry out various changes and modification without departing from this practicality to the utility model
New spirit and scope.So, if these modifications and variations of the present utility model belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to comprising including these changes and modification.
Claims (8)
1. a kind of screw down nonreturn valve, it is characterised in that comprise at least：Valve body, flap, elastomeric element and transmission mechanism；The valve
Body is hollow structure；The flap is arranged in the hollow structure；The transmission mechanism makes two to the flap applying power
Connect or separate between chamber；The transmission mechanism has flanged structure；One end of the elastomeric element connects with the flanged structure
Touch, the other end of the elastomeric element and the valve flap contacts；The inwall of the hollow structure, the flap and the driver
Cavity is formed between structure；The side wall of the valve body has medium channel；The medium channel connects the inner chamber of the valve body and described
Cavity.
2. screw down nonreturn valve as claimed in claim 1, it is characterised in that the transmission mechanism comprises at least：Handwheel, valve rod and
Depression bar；The handwheel is fixedly connected with the valve rod；The valve rod has external screw thread；The valve body has tapped through hole；The valve rod
Through the tapped through hole；The valve rod and the spacing connection of the depression bar, the convert rotational motion for making the valve rod is the pressure
The linear motion of bar, to the flap applying power；There is the flanged structure on the depression bar.
3. screw down nonreturn valve as claimed in claim 2, it is characterised in that the end of the valve rod is bending structure；Described
There is bending groove the end of depression bar；The bending structure is arranged in the bending groove；
Or,
There is bending groove in the end of the valve rod；The end of the depression bar is bending structure；The bending structure is arranged on institute
State in bending groove.
4. screw down nonreturn valve as claimed in claim 2, it is characterised in that have the scale of different height on the valve rod, use
To indicate the on off state of the valve body.
5. screw down nonreturn valve as claimed in claim 2, it is characterised in that the transmission mechanism also comprises at least：Bushing；It is described
Bushing is enclosed on the depression bar；The cavity is formed between the inwall of the hollow structure, the flap and the bushing.
6. screw down nonreturn valve as claimed in claim 5, it is characterised in that be provided between the bushing and the depression bar close
Seal；Sealing ring is provided between the inwall of the bushing and the hollow structure.
7. such as the screw down nonreturn valve any one of claim 1-6, it is characterised in that the flap and the valve body are line
Sealing.
8. screw down nonreturn valve as claimed in claim 7, it is characterised in that the end face of the flap is curved surface；The valve body
There is boss inside, and the boss is plane；The curved surface and the plane are linear contact lay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720878226.0U CN206918339U (en) | 2017-07-19 | 2017-07-19 | A kind of screw down nonreturn valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720878226.0U CN206918339U (en) | 2017-07-19 | 2017-07-19 | A kind of screw down nonreturn valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206918339U true CN206918339U (en) | 2018-01-23 |
Family
ID=61347740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720878226.0U Active CN206918339U (en) | 2017-07-19 | 2017-07-19 | A kind of screw down nonreturn valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206918339U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067863A (en) * | 2019-05-03 | 2019-07-30 | 杭州菲榭尔科技有限公司 | A kind of chemical plant liquid flow regulating valve |
| CN111536280A (en) * | 2020-06-08 | 2020-08-14 | 中国船舶重工集团公司第七0四研究所 | Easy to open and close high-reliability balanced controllable high-pressure cut-off check valve |
-
2017
- 2017-07-19 CN CN201720878226.0U patent/CN206918339U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067863A (en) * | 2019-05-03 | 2019-07-30 | 杭州菲榭尔科技有限公司 | A kind of chemical plant liquid flow regulating valve |
| CN111536280A (en) * | 2020-06-08 | 2020-08-14 | 中国船舶重工集团公司第七0四研究所 | Easy to open and close high-reliability balanced controllable high-pressure cut-off check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211221 Address after: 430060 No.2 ZhangZhidong Road, Wuchang, Wuhan, Hubei Province Patentee after: WUCHANG SHIPBUILDING INDUSTRY GROUP Co.,Ltd. Address before: 430063 No. 1052 Heping Avenue, Wuchang District, Wuhan City, Hubei Province Patentee before: WUHAN WUCHUAN ELECTROMECHANICAL EQUIPMENT MODULARIZATION CO.,LTD. |
|
| TR01 | Transfer of patent right |