CN205155182U - By dual -purpose valve of non return - Google Patents
By dual -purpose valve of non return Download PDFInfo
- Publication number
- CN205155182U CN205155182U CN201520959207.1U CN201520959207U CN205155182U CN 205155182 U CN205155182 U CN 205155182U CN 201520959207 U CN201520959207 U CN 201520959207U CN 205155182 U CN205155182 U CN 205155182U
- Authority
- CN
- China
- Prior art keywords
- valve
- screw mandrel
- lead screw
- spool
- valve body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Mechanically-Actuated Valves (AREA)
Abstract
The utility model discloses a by dual -purpose valve of non return, it includes hand wheel (1), lead screw (2), case (3), valve body (4) and valve gap (5), the lead screw upper portion that is located the valve gap is equipped with the location boss that prevents the lead screw to shift up, cup joint pressure blue (6) that prevent the lead screw to move down between lead screw and the valve gap bottom, the case bottom is partly to form lower seal face with valve body contact, form overflow passageway (7) between another part and the valve body, the case top is equipped with extension (8) of upwards extending, the adaptation has top and valve gap complex guiding orientation pipe (9) between lead screw and the extension, guiding orientation pipe and extension cooperation form the upper seal face, the extension, the lead screw, the adaptation has pressure spring (10) between case and the guiding orientation pipe, tight case top is supported to the one end of pressure spring, the other end supports the bottom of tight guiding orientation pipe. The beneficial effects of the utility model are that only need utilize one set of case, lead screw, valve body can realize simultaneously ending and the non return function.
Description
Technical field
The utility model relates to valve, particularly relates to cut-off, non-return dual purpose valve.
Background technique
Stop valve, is also pipe valve, and be one of most popular a kind of valve, why very popular it is, be due in opening and closing process between sealing surface frictional force little, more durable, Lift is little, easy to manufacture, easy to maintenance, be not only applicable to mesolow, and be applicable to high pressure.The closed principle of stop valve is, relies on valve thick stick pressure, valve clack sealing surface and sealing surface of seat are fitted tightly, and stops medium circulation.China's valve " three changes are given " once specified, the flow direction of stop valve, adopted from top to bottom without exception, so have directivity when installing.The structure length of stop valve is greater than gate valve, and fluid resistance is large simultaneously, and during long-time running, sealing reliability is not strong.
Safety check refers to and relies on medium flowing itself and automatic open and close flap, is used for the valve preventing medium from flowing backwards, also known as check valve, one-way valve, reflux valve and back pressure valve.Safety check belongs to a kind of automatic valve, and its Main Function prevents medium from flowing backwards, prevents pump and drive motor reversion, and the releasing of vessel media.The auxiliary system that safety check also can be used for may being raised above system pressure to pressure wherein provides on the pipeline of supply.Safety check mainly can be divided into Swing check valve (rotating according to center of gravity) and Lift check valve (moving along axis).
In the pipe-line equipment of existing gas or liquid transporting, in order to safety often adopt simultaneously a stop valve and safety check with the use of, controlled the flow direction of flowing medium in pipeline by two valves, but more loaded down with trivial details in pipe-line equipment is installed, cost is higher, affects sealing.
Chinese utility model patent CN200920351292.8 discloses a kind of Integral stop valve, it is in fact utilize an integrated cut-off flap of valve body and non-return flap, stop valve and safety check remain 2 independently functions, and fundamentally solution installation is loaded down with trivial details, cost is higher, affect the problem of sealing.
Model utility content
The technical problems to be solved in the utility model is that existing stop valve and safety check just simply piece together and realize the function of stop valve and safety check respectively, and structure is loaded down with trivial details, installation is difficult, and cost is higher, provides a kind of cut-off non-return dual purpose valve for this reason.
The technical solution of the utility model is: cut-off non-return dual purpose valve, it comprises handwheel, screw mandrel, spool, valve body and valve gap, the described screw mandrel top being positioned at valve gap is provided with the positioning boss stoping and screw mandrel moves, the differential stoping screw mandrel to move down is socketed with between bottom screw mandrel and valve gap, bottom described spool, a part and valve body contact form lower sealing surface, overflow ducts is formed between another part and valve body, described spool top is provided with the extension part upwards extended, the adaptive guide-localization pipe having top to coordinate with valve gap between described screw mandrel and extension part, described guide-localization pipe and extension part coordinate the upper sealing surface of formation, described extension part, screw mandrel, between spool and guide-localization pipe, adaptation has stage clip, one end of described stage clip pushes against spool top, the other end pushes against the bottom of guide-localization pipe.
Screw mandrel described in such scheme and spool top contact are divided into sphere.
The improvement of such scheme is that between described differential and guide-localization pipe, adaptation has filler.
The further improvement of such scheme is described valve interior wall lining fluorine.
Simultaneously the beneficial effects of the utility model only to utilize a set of spool, screw mandrel, valve body can realize cut-off and check function, the lifting of screw mandrel is coordinated to carry out through the cut-off of medium or non-return, greatly reduce manufacture cost and installation cost, simplify installment work.
Accompanying drawing explanation
Fig. 1 is the utility model schematic diagram;
In figure, 1, handwheel, 2, screw mandrel, 3, spool, 4, valve body, 5, valve gap, 6, positioning boss, 7, differential, 8, overflow ducts, 9, extension part, 10, guide-localization pipe, 11, stage clip, 12, filler.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, the utility model comprises handwheel 1, screw mandrel 2, spool 3, valve body 4 and valve gap 5, the described screw mandrel top being positioned at valve gap is provided with the positioning boss 6 stoping and screw mandrel moves, the differential 7 stoping screw mandrel to move down is socketed with between bottom screw mandrel and valve gap, bottom described spool, a part and valve body contact form lower sealing surface, overflow ducts 8 is formed between another part and valve body, described spool top is provided with the extension part 9 upwards extended, between described screw mandrel and extension part, adaptation has guide-localization pipe 10, described guide-localization pipe and extension part coordinate the upper sealing surface of formation, described extension part, screw mandrel, between spool and guide-localization pipe, adaptation has stage clip 11, one end of described stage clip pushes against spool top, the other end pushes against the bottom of guide-localization pipe.
Positioning boss in the utility model can be greater than the rectangle of screw mandrel diameter or the shape such as spherical, its effect be positioning boss pushes against valve gap when screw mandrel moves up to a certain extent top no longer on move, namely limit the mobile upper limit of screw mandrel.The effect of differential makes to prevent screw mandrel from rocking on the one hand, coordinate not tight with valve gap, effect is on the other hand that positioning boss contacts with differential and no longer moves down when screw mandrel moves down to a certain extent, and namely limit the mobile lower limit of screw mandrel, it is impaired that guarantee stage clip can not be subject to excessive pressure.
Guide-localization pipe and extension part are staggered to form sealing surface, prevent medium from entering from here between screw mandrel and extension part, are that is staggered to form sealing surface at least partly when screw mandrel moves to the mobile upper limit or move guide-localization pipe and extension part in limited time to have.Another effect of guide-localization pipe guides screw mandrel to move vertically.
Stage clip extension part, screw mandrel, between spool and guide-localization pipe, ensure that the deformation of stage clip only occurs in Vertical direction, stage clip two ends are pushed against by the bottom of spool top and guide-localization pipe, pretightening force is provided, apply certain downward pressure to spool, guarantee the sealing effect that can ensure lower sealing surface in a low voltage state.Stage clip is preferably stainless steel, avoids being damaged by dielectric corrosion.
In order to strengthen sealing effect, adaptation can have filler 12 between differential and guide-localization pipe, filler can also continue the leading role to screw mandrel.On the other hand in order to improve sealing effect, screw mandrel and spool top contact can be divided and being designed to sphere, so that spool uniform force.
Valve interior wall can serve as a contrast fluorine, makes valve inner can be high temperature resistant, corrosion-resistant, can adapt to the transport of various medium.
Two kinds of working staties of the present invention are as follows:
1, cut-off state: rotate handwheel and screw mandrel is moved down, sphere bottom screw mandrel applies downward pressure to spool, spool is realized reliable sealing by being pressed on sealing surface tightly, is the cut-off system that all cannot consist of lower sealing surface and upper sealing surface to the medium flowed into from which side.
2, non-return state: rotate handwheel and screw mandrel is moved up, bottom screw mandrel, sphere departs from spool, the medium flowed on the left of valve body enters in overflow ducts, along with the increase of rate-of flow is to spool applying thrust upwards, along with this thrust of further increasing of rate-of flow exceed downward preload pressure that stage clip provides spool gradually and on move, overflow ducts is connected with right side valve body, medium flows out from right side, when there is backflow in right side medium, first medium applies to make spool and valve body close contact to the downward pressure of spool, the larger valve seal performance of pressure medium is better, local minute leakage is there is under preventing the less situation of pressure medium, stage clip is provided with on spool top, spool is made to be subject to certain pretightening force, ensure sealing effect.
Claims (4)
1. cut-off non-return dual purpose valve, it comprises handwheel (1), screw mandrel (2), spool (3), valve body (4) and valve gap (5), the screw mandrel top being positioned at valve gap described in it is characterized in that is provided with the positioning boss (6) stoping and screw mandrel moves, the differential (7) stoping screw mandrel to move down is socketed with between bottom screw mandrel and valve gap, bottom described spool, a part and valve body contact form lower sealing surface, overflow ducts (8) is formed between another part and valve body, described spool top is provided with the extension part (9) upwards extended, the adaptive guide-localization pipe (10) having top to coordinate with valve gap between described screw mandrel and extension part, described guide-localization pipe and extension part coordinate the upper sealing surface of formation, described extension part, screw mandrel, between spool and guide-localization pipe, adaptation has stage clip (11), one end of described stage clip pushes against spool top, the other end pushes against the bottom of guide-localization pipe.
2. cut-off non-return dual purpose valve as claimed in claim 1, is characterized in that described screw mandrel and spool top contact are divided into sphere.
3. cut-off non-return dual purpose valve as claimed in claim 2, is characterized in that between described differential and guide-localization pipe, adaptation has filler (12).
4. the cut-off non-return dual purpose valve as described in as arbitrary in claim 1-3, is characterized in that described valve interior wall lining fluorine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520959207.1U CN205155182U (en) | 2015-11-27 | 2015-11-27 | By dual -purpose valve of non return |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520959207.1U CN205155182U (en) | 2015-11-27 | 2015-11-27 | By dual -purpose valve of non return |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205155182U true CN205155182U (en) | 2016-04-13 |
Family
ID=55690876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520959207.1U Expired - Fee Related CN205155182U (en) | 2015-11-27 | 2015-11-27 | By dual -purpose valve of non return |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205155182U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107940037A (en) * | 2017-11-16 | 2018-04-20 | 厦门理工学院 | The control method of zero-leakage stop valve, test device for air tightness and this shut-off valve |
| CN108361423A (en) * | 2018-04-23 | 2018-08-03 | 大连大高阀门股份有限公司 | The electronic bellows angle type stop check valve of core level-one heavy caliber |
| CN111237535A (en) * | 2020-03-26 | 2020-06-05 | 一重集团大连工程技术有限公司 | Multifunctional one-way valve capable of being opened and closed actively and function adjusting method thereof |
| CN111271507A (en) * | 2020-03-26 | 2020-06-12 | 一重集团大连工程技术有限公司 | Single-valve-element multifunctional valve and function adjusting method thereof |
-
2015
- 2015-11-27 CN CN201520959207.1U patent/CN205155182U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107940037A (en) * | 2017-11-16 | 2018-04-20 | 厦门理工学院 | The control method of zero-leakage stop valve, test device for air tightness and this shut-off valve |
| CN107940037B (en) * | 2017-11-16 | 2019-08-02 | 厦门理工学院 | The control method of test device for air tightness and this test device for air tightness |
| CN108361423A (en) * | 2018-04-23 | 2018-08-03 | 大连大高阀门股份有限公司 | The electronic bellows angle type stop check valve of core level-one heavy caliber |
| CN111237535A (en) * | 2020-03-26 | 2020-06-05 | 一重集团大连工程技术有限公司 | Multifunctional one-way valve capable of being opened and closed actively and function adjusting method thereof |
| CN111271507A (en) * | 2020-03-26 | 2020-06-12 | 一重集团大连工程技术有限公司 | Single-valve-element multifunctional valve and function adjusting method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205155182U (en) | By dual -purpose valve of non return | |
| CN111810664B (en) | Vacuum die-casting stop valve of hydraulic pump | |
| CN203892634U (en) | Spherical check valve | |
| CN207246445U (en) | High pressure vent stop valve | |
| CN202420051U (en) | Bidirectional throttle valve | |
| CN205592441U (en) | Multifunctional control vale | |
| CN205207721U (en) | Parallel gate valve | |
| CN205446828U (en) | One -way valve | |
| CN203963111U (en) | A kind of steel ball-type shuttle valve | |
| CN205298570U (en) | Electric check valve with slowly close vice valve | |
| CN209325072U (en) | A kind of modified wedge action valve | |
| CN106641295A (en) | High-temperature-resisting check and stop valve | |
| CN207349474U (en) | A kind of wedge action valve of stabilized seal | |
| CN202629156U (en) | Valve rod of ball valve for pipeline | |
| CN204878884U (en) | Butt clamp swing check valve | |
| CN209196189U (en) | A kind of axial flow type check valve that sealing effect is good | |
| CN204312711U (en) | A kind of stop valve | |
| CN205315786U (en) | Slowly close vertical check valve of hammer that disappears | |
| CN203202314U (en) | Float clack type check valve | |
| CN206874902U (en) | A kind of welded check valve | |
| CN205331514U (en) | Cast steel swing check valve's valve body | |
| CN102192345A (en) | Hydraulic control valve | |
| CN205136688U (en) | Low resistance backflow preventer | |
| CN116717609B (en) | Sealing gate valve with reinforced structure | |
| CN219242684U (en) | Valve with good sealing performance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20201127 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |