CN2169748Y - Self-pressure closed plug valve - Google Patents
Self-pressure closed plug valve Download PDFInfo
- Publication number
- CN2169748Y CN2169748Y CN 93238650 CN93238650U CN2169748Y CN 2169748 Y CN2169748 Y CN 2169748Y CN 93238650 CN93238650 CN 93238650 CN 93238650 U CN93238650 U CN 93238650U CN 2169748 Y CN2169748 Y CN 2169748Y
- Authority
- CN
- China
- Prior art keywords
- spool
- valve body
- pressure
- valve
- conical surface
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 239000000945 filler Substances 0.000 claims abstract description 5
- 210000000664 rectum Anatomy 0.000 claims description 9
- 210000004907 gland Anatomy 0.000 claims description 5
- 238000000280 densification Methods 0.000 claims description 4
- 238000012856 packing Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005272 metallurgy Methods 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model provides a design of autogenous pressure closed plug valve mainly comprises valve body, case, spring, valve rod, packing box, sealing filler, handle etc.. The main technical characteristics are as follows: 1. the high-temperature-resistant high-pressure-resistant high-opening-closing-speed pipe has the characteristics of high temperature resistance, high pressure resistance and high opening and closing speed, and can be consistent with the drift diameter of a piping; 2. the flow resistance of the medium is small, and the flow is large; 3. has the advantage of good self-pressure sealing performance. Can be widely used in petroleum, chemical industry, metallurgy, electric power, light industry, instruments, sugar and salt manufacturing, pharmacy and other industries.
Description
The utility model relates to the valve class, the industrial valve of a kind of high, middle pressure.
Existing height, Middle pressure valve, particularly instrument valve adopt " aciculiform stop valve " and " ball valve " more, and they have following defective: the major defect of aciculiform stop valve is: 1, the latus rectum cross section is little, influences the velocity of liquid assets of medium and flow, flow resistance is big; 2, keying speed is slow, and standard-sized sheet or full cut-off need handle is rotated 3-4 week.The major defect of ball valve: the internal friction resistance is bigger when 1, opening and closing, and keying moment is big.2, be difficult to high temperature resistant, high pressure.And general use of stopcock commonly used is low piezodielectric.
The purpose of this utility model is the above-mentioned defective that overcomes above valve, has proposed a kind of new design proposal; By the valve of this production have high temperature high voltage resistant, from densification close that performance is good, volume is little, latus rectum can pipe arrangement latus rectum unanimity; Operate light laborsaving, open and close characteristics such as rapid.
Design proposal of the present utility model is as follows: it is made up of valve body, spool, valve rod, spring, stuffing box, sealing gasket, high temperature high voltage resistant filler, handle etc.It is characterized in that: 1, latus rectum is big, can be consistent with the pipe arrangement latus rectum; 2, the spool section is interrupted conical surface cock, contacts with the valve body inner conical surface to be local contact, and frictional resistance is little, and balance media pressure partly; 3, the valve rod lower end connects with spool key formula, and is easy for installation; 4, the epicoele place is provided with a spring to increase air-tightness in the valve body; 5, valve body medium entrance point is provided with an aperture and passes to the discharge pressure medium mutually with body cavity, produces seal-off pressure at pressure medium and spring pressure effect lower valve core and valve body inner conical surface when closing, thereby has from close characteristic; 6, it is reliable that the valve rod place is provided with stuffing box packing, the sealing of high temperature high voltage resistant; 7, sealing is realized with the soft metal packing ring in stuffing box and valve body connection place.
Fig. 1 also is an embodiment for the utility model organization plan.
Fig. 2 is the valve core structure schematic representation.
1, valve body, 2, spool, 3, spring pad, 4, spring, 5, valve rod, 6, stuffing box, 7, sealing gasket, 8, high temperature high voltage resistant filler, 9, gland nut, 10, gland, 11, spacing Xiao, 12, handle, 13, plain cushion, 14 nuts.
Below in conjunction with accompanying drawing the utility model structure and working principle are further described.
(as shown in Figure 1) pressure medium is sealed and can only enter valve body 1 epicoele from an aperture at passway place when one, closing, under the effect of pressure medium and spring 4 pressure, spool 2 fits tightly all the time with valve body 1 inner conical surface, overcome the trend that spool 2 moves toward epicoele under pressure medium, realize rigid seal, so the energy high temperature high voltage resistant can also carry out fine setting compensation voluntarily, so long service life.
Two, full open: with handle 12 half-twists, spool 2 is synchronous half-twist under the manipulation of valve rod 5, and spool is located the sealing surface rotation for 2 liang and left valve channel, and spool 2 ducts are consistent with valve body 1 port hole opposite end, and medium can be unimpeded rapidly.
Three, be full of in valve when pressure medium is arranged, stuffing box 6 has a metal soft seal 7 with reliable sealing with valve body 1 connection place; The sealing at valve rod 5 places realizes sealing by multilayer high temperature high voltage resistant filler 8.
Four, handle 12 position rotating are realized with gland 10 by spacing Xiao 11.
Five, spool 2 as shown in Figure 2, its axial section and cross section are interrupted shape, have a breach to pass to the specific contact pressure of adjusting spool 2 and valve body 1 inner conical surface mutually with concave surface on the spool 2 at big end.The shape of this spool 2 has also been improved its processing technology, has saved milling time.
Advantage of the present utility model: the energy high temperature high voltage resistant, the self-pressure airtight performance is good, and volume is little, and processing performance is good, and latus rectum can be consistent with the pipe arrangement latus rectum in the valve, and the operation Portable power saving opens and closes fast, locates reliable.
Claims (3)
1, a kind of from densification enclosed stopcock, form by valve body, spool, valve rod, stuffing box etc.; It is characterized in that: spool 2 sections are the interrupted conical surface, place valve body central authorities to cooperate with valve body 1 inner conical surface, carry out rigid seal, when pressure medium passes to cavity between spool 2 and the stuffing box 6 by valve body 1 entrance point one aperture, apply pressure to spool 2 upper ends and produce seal-off pressure with the elastic force of spring 4; Spool 2 connects for the key formula with valve rod 5, and spool 2 was realized opening and closing when Joystick 12 carried out 90 ° of rotations, opens and closes the position by spacing Xiao's 11 controls; Other is provided with the seal arrangement that sealing gasket 7, stuffing box 6, high temperature high voltage resistant filler 8, gland 10 and gland nut 9 etc. are formed.
2, according to claim 1 from densification enclosed stopcock, its feature is that also axially radially section is the interrupted conical surface for described spool 2, and its latus rectum is consistent with the interior latus rectum of valve body.
3, according to claim 1 from densification enclosed stopcock, its feature is that also described valve body 1 entrance point has an aperture to communicate with epicoele in the valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93238650 CN2169748Y (en) | 1993-05-07 | 1993-05-07 | Self-pressure closed plug valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93238650 CN2169748Y (en) | 1993-05-07 | 1993-05-07 | Self-pressure closed plug valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2169748Y true CN2169748Y (en) | 1994-06-22 |
Family
ID=33813334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93238650 Expired - Fee Related CN2169748Y (en) | 1993-05-07 | 1993-05-07 | Self-pressure closed plug valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2169748Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195309A (en) * | 2016-08-26 | 2016-12-07 | 赛洛克流体设备成都有限公司 | The manual plunger valve gear that a kind of upper lower valve base can seal respectively |
-
1993
- 1993-05-07 CN CN 93238650 patent/CN2169748Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195309A (en) * | 2016-08-26 | 2016-12-07 | 赛洛克流体设备成都有限公司 | The manual plunger valve gear that a kind of upper lower valve base can seal respectively |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |