CN102454809A - Diaphragm valve - Google Patents
Diaphragm valve Download PDFInfo
- Publication number
- CN102454809A CN102454809A CN2010105276471A CN201010527647A CN102454809A CN 102454809 A CN102454809 A CN 102454809A CN 2010105276471 A CN2010105276471 A CN 2010105276471A CN 201010527647 A CN201010527647 A CN 201010527647A CN 102454809 A CN102454809 A CN 102454809A
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- China
- Prior art keywords
- valve
- valve rod
- stem mut
- thread
- flap
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Abstract
The invention discloses a diaphragm valve which comprises a valve body and a valve cover, wherein a diaphragm is arranged between the valve body and the valve cover, a valve clack is arranged above the diaphragm, the diaphragm valve is characterized in that a circular groove is formed on the valve clack, the tail part of a valve rod is inserted into the groove, the valve clack and the tail part of the valve rod are connected through a spring pin shaft, and a copper valve rod nut is additionally arranged between the valve rod and the valve cover. The diaphragm valve has the advantages that the defect of drop connection between the valve rod and the valve clack is overcome, the problem of stuck matching or thread abrasion caused by thread fine teeth is solved to a certain extent, and the defect of indefinite opening and closing of a valve body is overcome.
Description
Technical field:
The present invention relates to the technical field of mechanical valve, specifically a kind of membrane valve that is used for rubber and Structural Hardware sealing.
Background technique:
In the present existing membrane valve structure, connect flap by valve rod, flap and valve rod are connected to T type groove.Valve rod neck section is less than valve rod light face section, and valve rod neck section gets into T type groove, and valve rod light face is due to T type groove.Valve rod light face is fixed in T type groove, and valve rod meeting move left and right spy be prone to skid off groove in the motion, and cause the flap unlatching and close the malfunctioning of up-down, thus set up guide rail around the valve gap, in case move, but very difficult in making.
Valve rod and valve gap open and close in the existing membrane valve structure, adopt the body screw thread.In frequent keying, cause the wearing and tearing of screw thread especially, cause " deadlock " of complete machine.The membrane valve of existing technology, valve rod goes up and down not obvious, causes operator's operation unit just.So still need further improve to the existing technology structure, make that its overall structure is tending towards rationalizing more, improvement, effectively improve the serviceability and the Security of producing.
Summary of the invention:
The object of the present invention is to provide the higher membrane valve of a kind of reliability, it can overcome, and valve rod skids off flap in the existing technology, and the unconspicuous deficiency of mark method is opened and closed in the wearing and tearing of valve rod up-down screw thread department.
To achieve these goals; Technological scheme of the present invention is following: a kind of membrane valve; Comprise valve body, valve gap, be provided with barrier film, barrier film top between valve body and the valve gap and be provided with flap, it is characterized in that flap top is provided with circular groove; The valve rod afterbody inserts in this groove, connects through axis pin of the spring between flap and the valve rod afterbody.Be provided with copper Stem Mut between valve rod and the valve gap; Copper Stem Mut directly is connected through trapezoidal thread with valve rod; Insert in the valve gap lower end of copper Stem Mut, and copper Stem Mut middle part is provided with outside thread, and the internal thread of the handwheel outer with being enclosed within this copper Stem Mut is connected; Copper Stem Mut top also is provided with outside thread, is connected with the internal thread of a round nut.The valve rod head is provided with one section outside thread, is connected with the internal thread of a gland nut.
Membrane valve of the present invention; Connect through axis pin of the spring between flap and the valve rod afterbody; Can reduce the mobile space of valve rod effectively, make that the environment between being connected of valve rod and flap is improved, thereby make the traditional relatively flap of flap and stem structure significantly reduce dropping situations.Equipment operation is safer.Structure is also fairly simple simultaneously, easy-to-operat and use.Select for use axis pin of the spring as connecting fixed block, not only make things convenient for installation but also do not lose attractive in appearance.The present invention increases a copper Stem Mut on valve gap top, Stem Mut and threaded stem partly adopt the form of trapezoidal thread, have increased the width of screw thread.Stem Mut employing simultaneously is copper, can reduce the frictional force of screw thread, has increased the working life of product, and Stem Mut and handwheel are connected to round nut simultaneously, when handwheel carries out circular movement, make stem movement become straight line motion by circumference through Stem Mut.The invention has the advantages that: coming off between it has overcome valve rod and flap is connected also overcome to a certain extent because screw thread carefully causes kills between cooperation or the wearing and tearing of screw thread, and overcome valve body and open and close not clear defective.
Description of drawings:
Fig. 1 is a structural representation of the present invention
Embodiment:
Fig. 1 is the structural representation of one embodiment of the present of invention.As shown in the figure, it mainly comprises the diaphragm of rubber 2 and the barrier film screw of valve body 1, lining Polyamide Yarns, and diaphragm of rubber 2 tops are provided with flap 7; Flap 7 is connected on the barrier film screw; The top of flap 4 is provided with circular groove, and the groove two ends are respectively equipped with boring 9, and valve rod 10 afterbodys also are provided with boring; In valve rod 10 afterbodys got into this circular groove, it is fixing with flap 7 with valve rod 10 that elasticity bearing pin 8 passes boring.Be provided with copper Stem Mut 12 between valve rod 10 and the valve gap 11, copper Stem Mut 12 is enclosed within outside the valve rod 10, and directly is connected through trapezoidal thread with this valve rod 10; Insert in the valve gap 11 lower end of copper Stem Mut 12; Copper Stem Mut 12 middle parts are provided with outside thread, are connected with the internal thread that is enclosed within this copper Stem Mut 12 handwheel 13 outward, and copper Stem Mut 12 tops also are provided with outside thread; Be connected with the internal thread of a round nut 14; Screw thread below, copper Stem Mut 12 middle part is provided with boss, and during use, the lower end surface of handwheel 13 contacts with the upper-end surface of boss; The upper-end surface of handwheel 13 contacts with the lower end surface of round nut, and promptly handwheel 13 is fixed between boss and the round nut.Valve rod 10 heads are provided with one section outside thread, are connected with the internal thread of a gland nut 15.Handwheel 13 is through this copper Stem Mut 12; With the moving straight line motion of changing into of valve rod circle transhipment; Valve rod 10 carries out straight line along with handwheel 13 rotates; The valve rod afterbody is provided with gland nut 15, and when barrier film 2 sealed with valve body 1 sealing surface mutually, 12 of gland nut 15 and copper Stem Muts had certain distance.Valve gap also is connected with a draw ring 17, can draw ring be connected with handwheel through chain, causes misoperation with the rotation inhibiting handwheel.
In the existing technology, when the valve rod unlatching was closed, machining screw and threaded stem were done to open and are closed motion on the valve gap body.Existing technology is used fine thread, and in order to overcome existing technology silk thread mouth situation easy to wear, the present invention increases a copper Stem Mut on valve gap top, and Stem Mut and threaded stem partly adopt the form of trapezoidal thread, have increased the width of screw thread.Stem Mut employing simultaneously is copper, can reduce the frictional force of screw thread, has increased the working life of product, and Stem Mut and handwheel are connected to round nut simultaneously, when handwheel carries out circular movement, make stem movement become straight line motion by circumference through Stem Mut.
When barrier film was closed, valve rod top gland nut and Stem Mut closed in one, and at this time visual this membrane valve is closed; Opposite to gland nut and Stem Mut; When drawing back a segment distance, this moment, visual this membrane valve was opened, and gland nut can be used as a kind of protection of valve rod external connection screw again.
Claims (4)
1. a membrane valve comprises valve body, valve gap, is provided with barrier film, barrier film top between valve body and the valve gap and is provided with flap, it is characterized in that flap top is provided with circular groove, and the valve rod afterbody inserts in this groove, connects through axis pin of the spring between flap and the valve rod afterbody.
2. a kind of membrane valve as claimed in claim 1; It is characterized in that: be provided with copper Stem Mut between valve rod and the valve gap, copper Stem Mut directly is connected through trapezoidal thread with valve rod, and insert in the valve gap lower end of copper Stem Mut; Copper Stem Mut middle part is provided with outside thread; The internal thread of the handwheel outer with being enclosed within this copper Stem Mut is connected, and copper Stem Mut top also is provided with outside thread, is connected with the internal thread of a round nut.
3. a kind of membrane valve as claimed in claim 2 is characterized in that: the valve rod head is provided with one section outside thread, is connected with the internal thread of a gland nut.
4. a kind of membrane valve as claimed in claim 3 is characterized in that: valve gap also is connected with a draw ring, and draw ring is connected with handwheel through chain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105276471A CN102454809A (en) | 2010-10-29 | 2010-10-29 | Diaphragm valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105276471A CN102454809A (en) | 2010-10-29 | 2010-10-29 | Diaphragm valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102454809A true CN102454809A (en) | 2012-05-16 |
Family
ID=46038300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105276471A Pending CN102454809A (en) | 2010-10-29 | 2010-10-29 | Diaphragm valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102454809A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB794992A (en) * | 1954-06-14 | 1958-05-14 | Grinnell Corp | Diaphragm valves |
| US4014514A (en) * | 1975-06-27 | 1977-03-29 | Hills-Mccanna Company | High pressure diaphragm valve |
| CN2091392U (en) * | 1991-03-22 | 1991-12-25 | 刘敬善 | Diaphragm stop valve |
| EP0609469A1 (en) * | 1993-01-06 | 1994-08-10 | Sekisui Kagaku Kogyo Kabushiki Kaisha | Branched valve |
| JPH08152073A (en) * | 1994-11-29 | 1996-06-11 | Sekisui Chem Co Ltd | Diaphragm valve |
| CN2438890Y (en) * | 2000-08-18 | 2001-07-11 | 成都英德实业有限公司 | Aseptic diaphragm valve |
| US20020056826A1 (en) * | 2000-11-16 | 2002-05-16 | Tripoli Joseph V. | Sanitary fluid handling controls |
| CN201502743U (en) * | 2009-09-21 | 2010-06-09 | 倪商伟 | Portable diaphragm valve |
-
2010
- 2010-10-29 CN CN2010105276471A patent/CN102454809A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB794992A (en) * | 1954-06-14 | 1958-05-14 | Grinnell Corp | Diaphragm valves |
| US4014514A (en) * | 1975-06-27 | 1977-03-29 | Hills-Mccanna Company | High pressure diaphragm valve |
| CN2091392U (en) * | 1991-03-22 | 1991-12-25 | 刘敬善 | Diaphragm stop valve |
| EP0609469A1 (en) * | 1993-01-06 | 1994-08-10 | Sekisui Kagaku Kogyo Kabushiki Kaisha | Branched valve |
| JPH08152073A (en) * | 1994-11-29 | 1996-06-11 | Sekisui Chem Co Ltd | Diaphragm valve |
| CN2438890Y (en) * | 2000-08-18 | 2001-07-11 | 成都英德实业有限公司 | Aseptic diaphragm valve |
| US20020056826A1 (en) * | 2000-11-16 | 2002-05-16 | Tripoli Joseph V. | Sanitary fluid handling controls |
| CN201502743U (en) * | 2009-09-21 | 2010-06-09 | 倪商伟 | Portable diaphragm valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120516 |
|
| RJ01 | Rejection of invention patent application after publication |