CN204901036U - Non -rising -stem gate valve switching and aperture display device - Google Patents
Non -rising -stem gate valve switching and aperture display device Download PDFInfo
- Publication number
- CN204901036U CN204901036U CN201320726583.7U CN201320726583U CN204901036U CN 204901036 U CN204901036 U CN 204901036U CN 201320726583 U CN201320726583 U CN 201320726583U CN 204901036 U CN204901036 U CN 204901036U
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- valve
- former
- gate valve
- valve rod
- rising
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Abstract
Non -rising -stem gate valve switching and aperture display device belongs to general valve safety protection technical field. Make non -rising -stem gate valve switching and aperture show at any time, avoid personnel blindly to operate and the damage valve. This device comprises an elongated valve rod on former non -rising -stem gate valve basis, the scale plate of instructing nut and pointer and having a scale groove. The extension valve rod is with a former non -rising -stem gate valve operating device side valve pole extension segment length, and trapezoidal (or other) screw thread revolves to the same ordinary external screw thread of machinable minimum pitch on the processing of extension section and former valve rod, cooperates an instruction nut of taking the pointer in this external screw thread section, the fixed scale plate that has the scale groove together on former gate valve. This device can directly be disposed by valve manufacturing plant, avoids reforming transform the unserviceable waste of the former valve rod of formation. It is when installing the gate valve and install this device additional, also very simple. This device principle is simple, the part is small in quantity and easy processing, materials are few, the demonstration is directly perceived, accurate, little to former valve not damaged, occupation space.
Description
Technical field
Inside screw non-rising stem type gate valve opening and closing and opening display device belong to General valve technical field of safety protection.
Background technique
1, inside screw non-rising stem type gate valve
Inside screw non-rising stem type gate valve is again swingle gate valve (being also non-rising stem wedge gate valve).Valve rod, nut in valve body, with physical contact between media.The open-shut device of inside screw non-rising stem type gate valve is flashboard, and moving direction and the flow direction of flashboard are perpendicular, realize opening and closing with rotary valve rod.Stem Mut is located on flashboard, and hand wheel rotating band ovable valve stem rotates, and flashboard is promoted, usually trapezoidal thread is had in the bottom of valve rod, by the guide groove on the screw thread of gate valve bottom and flashboard, rotary motion is become straight line motion, namely operation torque is become operation thrust.
The height of inside screw non-rising stem type gate valve always remains unchanged, and poppet stem only rotates and without moving up and down, installing space is little, but threaded stem cannot lubricate, and direct accepting medium corrodes, and easily damages.Because when inside screw non-rising stem type gate valve opens and closes, valve rod does not move up and down, valve opening and closing and aperture size cannot be shown, understand valve working situation in time to operator and bring difficulty, even occur that misoperation damages the situation of valve.
Therefore, for ensureing that inside screw non-rising stem type gate valve normally uses, prevention personnel misoperation damages gate valve, and inside screw non-rising stem type gate valve all should arrange opening and closing and opening display device.
2, the prior art of inside screw non-rising stem type gate valve valve position
(1) the wheeled Hiden-stem gate valve aperture display device of switch
A kind of Hiden-stem gate valve aperture display device of CN200410002349.5 disclosure of the invention, that a switch wheel is installed on valve rod, the Gland of valve is fixed a dunnage, support plate have a salient point or chase at least, on the supporting plate a fluted disc is installed, dish tooth on fluted disc and scale mark and chase or salient point are all in circular uniform and number is equal and salient point in aligned with each other one by one diametrically and its chase or salient point and dunnage or the mutual fourth of the twelve Earthly Branches of chase are closed, valve rod often rotates an angle, chase on fluted disc or salient point are just unified secondary with the salient point in dunnage or the mutual fourth of the twelve Earthly Branches of chase, fluted disc just turns over a scale.
(2) ono-rising-stem valve tooth difference indicator
CN202946756U discloses a kind of ono-rising-stem valve one tooth difference indicator, and driving gear is connected with valve rod, and direction board is fixed on accessory whorl, and pointer is fixed by bolts on driven gear.Driving gear is identical with the accessory whorl number of teeth, driven gear gear ratio driving gear and the many teeth of accessory whorl.Handwheel is rotated when valve working, valve rod rotates, drive driving gear rotates, driving gear drives driven gear, accessory whorl to rotate, due to a driven gear tooth more than driving gear, the number of turns that during rotation, two gears turn is different, by calculating valve opening stroke and the position by direction board pointed valve opening, closedown.
(3) valve bush type inside screw non-rising stem type gate valve stroke signal device
A kind of inside screw non-rising stem type gate valve stroke indicating device of CN103104745A disclosure of the invention, comprise former valve body, the valve rod section in valve pocket is provided with an inner screw sheath, is provided with chute, is provided with pointer in chute outside inner screw sheath, pointed slide opening.The valve rod of former valve increases a part of stroke, pointer, graded tube are arranged on former valve.
In CN200410002349.5, adopt gear transmission, required part is more, the part processed complexs such as gear, with the number of degrees rotated display aperture, not intuitively.In CN202946756U, adopt gear mechanism transmission, increase part more, the part processed complexs such as gear, stroke needs to calculate.In CN103104745A, stroke signal device comprises more part, and valve pocket need be fixed on valve body with Cock screw, has damage to valve body.
Summary of the invention
1, particular problem to be solved
The opening and closing of this inside screw non-rising stem type gate valve and opening display device overcome the deficiencies in the prior art, realize that principle is simple, number of spare parts is few and easily process, take up room object that is little, that be beneficial to popularization.Utilize the scale plate in original thread connector fixing device on valve body, to former valve body not damaged.Inside screw non-rising stem type gate valve opening and closing and aperture intuitively, accurately being shown at any time, avoiding personnel to damage valve because not grasping aperture situation blindly to operate.
2, the technical solution of the utility model is: a kind of inside screw non-rising stem type gate valve opening and closing and opening display device, is characterized in that: the valve rod lengthened on former inside screw non-rising stem type gate valve basis by, instruction nut and pointer and form with the scale plate of scale groove; Extension valve rod is that former inside screw non-rising stem type gate valve operating device side valve bar is lengthened a segment length L, and length L determines according to the common outside thread pitch P 2 of inside screw non-rising stem type gate valve inside nominal diameter DN, valve rod bottom former trapezoidal thread pitch P 1, machinable minimum pitch: L >=DN/ (P1/P2)=DN × P2/P1; At the common outside thread of machinable minimum pitch that lengthening section processing is identical with former valve rod upper trapezoid thread rotary orientation; Pointer moves along valve rod direction in scale groove, and when valve rod rotates, pointer and valve plate move in the same way, doubly reduces the stroke of display flashboard standard-sized sheet to full cut-off with P1/P2; Scale groove has standard-sized sheet, full cut-off and some neutral positions aperture graduation line, scale plate utilizes original thread connector on valve body to fix, not injury of primary valve body; Instruction nut and pointer are coordinated with the common outside thread on extension valve rod by internal thread.Internal thread and the common external thread rotary that valve rod is processed of instruction nut are to identical and be the common internal thread of machinable minimum pitch, and pointer adopts scyewed joint between nut or welds with indicating.Former trapezoidal (or the other) thread pitch in valve rod bottom and machinable minimum pitch common outside thread pitch ratio larger valve rod extension length less, this device takes up room also less.
Accompanying drawing explanation
Fig. 1 is the inside screw non-rising stem type gate valve structural representation with opening and closing and opening display device.
Fig. 2 is instruction nut and the pointer schematic diagram of opening and closing and opening display device.
Fig. 3 is the scale plate schematic diagram of opening and closing and opening display device.
In the drawings: 1. valve rod, 2. indicate nut, 3. pointer, 4. scale plate, 5. newly increase outside thread.
Embodiment
Former inside screw non-rising stem type gate valve operating device side valve bar is lengthened a segment length L, and length is determined according to factors such as the common outside thread pitch P 2 of inside screw non-rising stem type gate valve inside nominal diameter DN, valve rod bottom former trapezoidal (or other) thread pitch P1, machinable minimum pitch:
L≥DN/(P1/P2)＝DN×P2/P1
Valve rod 1 is at lengthening section processing and former valve rod upper trapezoid (or other) the common outside thread of machinable minimum pitch that thread rotary orientation is identical, this external thread section coordinates the instruction nut 2 of a band pointer 3, utilizes the thread connector on former gate valve to fix the scale plate 4 of one piece of groove with a scale.When valve rod rotates, flashboard and pointer 3 move in the same way.Newly increase former trapezoidal thread on outside thread 5 pitch ratio valve rod (or other) pitch much smaller, instruction nut 2 drives in the scale groove of pointer 3 on scale plate 4 and moves up and down, with the opening and closing of minimum range (flashboard standard-sized sheet to the stroke of full cut-off is reduced P1/P2 doubly) display gate valve and aperture.
After inside screw non-rising stem type gate valve increases opening and closing and opening display device, eliminating inside screw non-rising stem type gate valve opening and closing and aperture can not the defect of direct vision, accurately can understand opening and closing and the aperture of valve at any time, keep standard-sized sheet or complete shut-down, avoid being operated in adjustment or throttle, avoid blindly operation to damage valve, reduce enterprise's extra cost expenditure, reduce the rate of fault of equipment and system cloud gray model.
Claims (2)
1. inside screw non-rising stem type gate valve opening and closing and an opening display device, is characterized in that: the valve rod lengthened on former inside screw non-rising stem type gate valve basis by, instruction nut and pointer and form with the scale plate of scale groove;
Extension valve rod is that former inside screw non-rising stem type gate valve operating device side valve bar is lengthened a segment length L, and length L determines according to the common outside thread pitch P 2 of inside screw non-rising stem type gate valve inside nominal diameter DN, valve rod bottom former trapezoidal thread pitch P 1, machinable minimum pitch: L >=DN/ (P1/P2)=DN × P2/P1;
At the common outside thread of machinable minimum pitch that lengthening section processing is identical with former valve rod upper trapezoid thread rotary orientation;
Pointer moves along valve rod direction in scale groove, and when valve rod rotates, pointer and valve plate move in the same way, doubly reduces the stroke of display flashboard standard-sized sheet to full cut-off with P1/P2;
Scale groove has standard-sized sheet, full cut-off and some neutral positions aperture graduation line, scale plate utilizes original thread connector on valve body to fix, not injury of primary valve body;
Instruction nut and pointer are coordinated with the common outside thread on extension valve rod by internal thread.
2. display unit according to claim 1, internal thread and the common external thread rotary that valve rod is processed of instruction nut are to identical and be the common internal thread of machinable minimum pitch, and pointer adopts scyewed joint between nut or welds with indicating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320726583.7U CN204901036U (en) | 2013-11-18 | 2013-11-18 | Non -rising -stem gate valve switching and aperture display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320726583.7U CN204901036U (en) | 2013-11-18 | 2013-11-18 | Non -rising -stem gate valve switching and aperture display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204901036U true CN204901036U (en) | 2015-12-23 |
Family
ID=54923210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320726583.7U Expired - Fee Related CN204901036U (en) | 2013-11-18 | 2013-11-18 | Non -rising -stem gate valve switching and aperture display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204901036U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763837A (en) * | 2016-11-10 | 2017-05-31 | 林之铠 | A kind of gate valve |
| CN110375111A (en) * | 2019-08-06 | 2019-10-25 | 上海凯工阀门股份有限公司 | Valve opening instruction device |
| CN110440015A (en) * | 2019-08-09 | 2019-11-12 | 启东市金猴除尘成套设备有限公司 | A kind of pulse valve |
| CN115031448A (en) * | 2022-05-17 | 2022-09-09 | 合肥通用机械研究院有限公司 | Manual-automatic integrated adjusting device based on expansion valve |
-
2013
- 2013-11-18 CN CN201320726583.7U patent/CN204901036U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763837A (en) * | 2016-11-10 | 2017-05-31 | 林之铠 | A kind of gate valve |
| CN106763837B (en) * | 2016-11-10 | 2019-05-17 | 奉化市中新阀门有限公司 | A kind of gate valve |
| CN110375111A (en) * | 2019-08-06 | 2019-10-25 | 上海凯工阀门股份有限公司 | Valve opening instruction device |
| CN110440015A (en) * | 2019-08-09 | 2019-11-12 | 启东市金猴除尘成套设备有限公司 | A kind of pulse valve |
| CN115031448A (en) * | 2022-05-17 | 2022-09-09 | 合肥通用机械研究院有限公司 | Manual-automatic integrated adjusting device based on expansion valve |
| CN115031448B (en) * | 2022-05-17 | 2024-03-08 | 合肥通用机械研究院有限公司 | Manual-automatic integrated adjusting device based on expansion valve |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20211118 |