CN2163909Y - Mechanical sealed energy-saving stop valve - Google Patents
Mechanical sealed energy-saving stop valve Download PDFInfo
- Publication number
- CN2163909Y CN2163909Y CN 93216783 CN93216783U CN2163909Y CN 2163909 Y CN2163909 Y CN 2163909Y CN 93216783 CN93216783 CN 93216783 CN 93216783 U CN93216783 U CN 93216783U CN 2163909 Y CN2163909 Y CN 2163909Y
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- China
- Prior art keywords
- screw
- valve
- gland
- pipe nipple
- fixed
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- 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
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Abstract
The utility model relates to a mechanical sealed energy-saving stop valve which comprises a valve body (1), a nipple (2), a combination valve head (3), a lead screw (4), a valve seat (5), a press cap (6), a mechanical sealed assembly (7), a locating pin (8), a hand wheel (9), a nut (10). The lead screw is arranged in the nipple, and the nipple adopts a precise movable fit with a rotary screw nut to form a mechanical seal. The pressure spring of components compacts tightly with a sealed ring. Owing to the location of the rotary nut, the hand wheel switch is rotated to enable the lead screw to move up and down in the nut. As a result, the valve head is driven to achieve the goals of opening and closing the stop valve. Moreover, because of the location of the boss of the nut and the location of the locating pin of the lead screw, the valve head can not fall off regardless of opening and closing. The end chamber of the combination valve head forms a frustum inclined plane.
Description
The utility model relates to a kind of valve, particularly a kind of energy-conservation stop valve of mechanical seal of controlling fluid.
The sealing surface of existing stop valve mostly car adopts plane sealing in valve body, fluid flings valve head during work, valve head is very easily washed away damage malfunctioning, produce and leak, and produce and reflux, washout valve (interior) sealing surface makes it premature damage, when especially the impurity suspended particulate being arranged in the fluid, very easily stick on the sealing surface, cause valve switch not tight, produce and leak, because of the sealing surface car in valve body, in case damage, repair difficulty, cause waste.
Leading screw, filler, the Gland of existing stop valve is exposed to the outside entirely, exposed to the weather, accelerated corrosion, especially filler place gas leakage, when leaking, various dusts are bonded on filler place and the leading screw, valve is brought screw, filler place into when switch, valve torsion when switch is increased and the wearing and tearing of sealing surface are accelerated.
The valve head of existing stop valve mostly is connected by a round iron silk with screw mandrel, and fluid flings valve head during work, produces and impacts, and makes valve head be in dither state for a long time, and the round iron silk connects not firm, and valve head comes off easily.
Have now by being by the screw location, handwheel drives leading screw rotation generation lifting and finishes the work, and when open valve, leading screw rises, and when reaching maximum opening, leading screw rises to the limit simultaneously, and this moment, the leading screw torsional strength was poor, leading screw is twisted bend easily, the handwheel damage.
The purpose of this utility model is the deficiency at above existing stop valve existence, a kind of novel structure is provided, uses flexibly, make the energy-conservation stop valve of mechanical seal simple, easy to maintenance, that the life-span is long.
The utility model is achieved through the following technical solutions: as shown in Figure 1, the energy-conservation stop valve of a kind of mechanical seal, including valve body (1), leading screw (4), valve seat (5), gland (6), handwheel (9), screw (10), valve seat (5) is fixed in the valve body (1), leading screw (4) and screw (10) also are positioned at the inside of valve body (1), leading screw (4) is interlocked by outer, internal thread with screw (10), rotate outside screw (10) and can make inner leading screw (4) produce upper and lower displacement, it is characterized in that:
1, also include pipe nipple (2), combination valve head (3), locating stud (8),
2, pipe nipple (2) is fixed on the upper end-hole of valve body (1), gland (6) is fixed on the upper end-hole of pipe nipple (2), between screw (10) and gland (6) and the pipe nipple (2) is Spielpassung, screw (10) can be rotated, handwheel (9) is fixed on screw (10) and exposes upper end portion outside gland (6), can drive screw (10) rotates, having a ring boss on the screw (10) of pipe nipple (2) and gland (6) junction is fastened between pipe nipple (2) inner face and gland (6) inner face in the formed ring groove, screw (10) can not moved up and down, leading screw (4) by threaded engagement in screw (10), it is shorter in length than pipe nipple (2), combination valve head (3) is fixed on the underpart of leading screw (4), its big I covers the bottom bore of pipe nipple (2) and is positioned at the bore of the valve seat (5) under combination valve head (3), locating stud (8) is fixed on the interior lower end face of pipe nipple (2), be stuck in leading screw (4) and go up in the corresponding axial groove of leaving, can prevent that leading screw (4) from rotating.
Be cylindrical body in the middle of combination valve head (3) can be made, upper/lower terminal is the shape of circular cone, and the diameter of mediate cylindrical is greater than the bottom bore of pipe nipple (2) and the bore of valve seat (5).
Valve seat (5) can be twisted by screw thread and be closed the inside that is fixed on valve body (1), be positioned at combination valve head (3) under, can back out replacing.
Between the upper end-hole of the ring boss of screw (10) and gland (6), in the gap of screw (10) and gland (6), can be fixed with a mechanical sealing assembly (7), realize mechanical seal to gland (6) port.
Mechanical sealing assembly (7) can be made up of a pressure spring and a seal ring, and the pressure spring lower support is on the ring boss of screw (10), and upwards the top tight sealing ring to be close to the gap between gland (6) and the screw (10), is realized mechanical seal.
Advantage of the present utility model is: 1) leading screw be contained in the pipe nipple, pipe nipple and swivel nut employing precision movingly, form mechanical seal, accurate positioning, good sealing effect adopts mechanical sealing assembly, the pressure spring top tight sealing ring of assembly, play the primary seal effect, when fluid is in pipe nipple flow into upper press cover, according to Bath card principle, fluid force holds out against mechanical seal ring, plays the secondary seal effect; 2) rotate handwheel switch,, drive valve head, play the purpose of the open and close of stop valve because rotation screw location makes leading screw upper and lower moving in screw, and because of screw boss location and leading screw locating stud location, so no matter the open and close valve head all can not come off; 3) two ends of combination valve head are truncated cone, when making out valve, leading screw rises to the limit, the combination valve head contacts with the pipe nipple lower end mouth, forms sealing, at this moment, fluid can be not excessive from the handwheel leading screw, when closing valve, leading screw drops to the limit, and the combination valve head contacts with lower valve base and forms sealing, because the chamber, termination of combination valve head is the frustum inclined-plane, fluid is flowing during work, and impurity particle can't be rested on the inclined-plane, and upper and lower bore all seals fine, after using a period of time, valve head or valve seat have wearing and tearing, and sealing is by the contact of line contact becoming band, and sealing effect is better.
Figure one is a structural representation of the present utility model
Most preferred embodiment of the present utility model:
The energy-conservation stop valve of mechanical seal includes valve body (1), pipe nipple (2), combination valve head (3), leading screw (4), valve seat (5), gland (6), mechanical sealing assembly (7), locating stud (8), handwheel (9), screw (10).Leading screw (4) and screw (10) are positioned at the inside of valve body (1), leading screw (4) is interlocked by outer, internal thread with screw (10), rotate outside screw (10) and can make inner leading screw (4) produce upper and lower displacement, leading screw (4) be shorter in length than pipe nipple (2); Pipe nipple (2) is fixed on the upper end-hole of valve body (1); Gland (6) is fixed on the upper end-hole of pipe nipple (2); Between screw (10) and gland (6) and the pipe nipple (2) is Spielpassung, and screw (10) can be rotated; Handwheel (9) is fixed on screw (10) and exposes upper end portion outside gland (6), can drive screw (10) and rotate; On the screw (10) of pipe nipple (2) and gland (6) junction, have a ring boss and be fastened between pipe nipple (2) inner face and gland (6) inner face in the formed ring groove, screw (10) can not moved up and down; Combination valve head (3) is fixed on the underpart of leading screw (4), is cylindrical body in the middle of it is made, and upper/lower terminal is the shape of circular cone, and the cone angle at two ends is 90 °, and the diameter of mediate cylindrical is greater than the bottom bore of pipe nipple (2) and the bore of valve seat (5); Locating stud (8) is fixed on the interior lower end face of pipe nipple (2), is stuck in leading screw (4) and goes up in the corresponding axial groove of leaving, and can prevent that leading screw (4) from rotating; Valve seat (5) is twisted by screw thread and is closed the inside that is fixed on valve body (1), be positioned at combination valve head (3) under, can back out replacing; Between the upper end-hole of the ring boss of screw (10) and gland (6), in the gap of screw (10) and gland (6), be fixed with mechanical sealing assembly (7), it is made up of a pressure spring and a seal ring, the pressure spring lower support is on the ring boss of screw (10), upwards the top tight sealing ring to be close to the gap between gland (6) and the screw (10), is realized mechanical seal.
Claims (5)
1, the energy-conservation stop valve of a kind of mechanical seal, include valve body (1), leading screw (4), valve seat (5), gland (6), handwheel (9), screw (10), valve seat (5) is fixed in the valve body (1), leading screw (4) and screw (10) also are positioned at the inside of valve body (1), leading screw (4) is interlocked by outer, internal thread with screw (10), rotate outside screw (10) and can make inner leading screw (4) produce upper and lower displacement, it is characterized in that:
1), also include pipe nipple (2), combination valve head (3), locating stud (8),
2), pipe nipple (2) is fixed on the upper end-hole of valve body (1), gland (6) is fixed on the upper end-hole of pipe nipple (2), between screw (10) and gland (6) and the pipe nipple (2) is Spielpassung, screw (10) can be rotated, handwheel (9) is fixed on screw (10) and exposes upper end portion outside gland (6), can drive screw (10) rotates, having a ring boss on the screw (10) of pipe nipple (2) and gland (6) junction is fastened between pipe nipple (2) inner face and gland (6) inner face in the formed ring groove, screw (10) can not moved up and down, leading screw (4) by threaded engagement in screw (10), it is shorter in length than pipe nipple (2), combination valve head (3) is fixed on the underpart of leading screw (4), its big I covers the bottom bore of pipe nipple (2) and is positioned at the bore of the valve seat (5) under combination valve head (3), locating stud (8) is fixed on the interior lower end face of pipe nipple (2), be stuck in leading screw (4) and go up in the corresponding axial groove of leaving, can prevent that leading screw (4) from rotating.
2, the energy-conservation stop valve of mechanical seal according to claim 1, it is characterized in that: be cylindrical body in the middle of combination valve head (3) can be made, upper/lower terminal is the shape of circular cone, and the diameter of mediate cylindrical is greater than the bottom bore of pipe nipple (2) and the bore of valve seat (5).
3, the energy-conservation stop valve of mechanical seal according to claim 1 is characterized in that: valve seat (5) can be twisted by screw thread and be closed the inside that is fixed on valve body (1), be positioned at combination valve head (3) under, can back out replacing.
4, according to claim 1 or the energy-conservation stop valve of 2 or 3 described mechanical seals, it is characterized in that: between the upper end-hole of the ring boss of screw (10) and gland (6), in the gap of screw (10) and gland (6), can be fixed with a mechanical sealing assembly (7), realize mechanical seal gland (6) port.
5, the energy-conservation stop valve of mechanical seal according to claim 4, it is characterized in that: mechanical sealing assembly (7) can be made up of a pressure spring and a seal ring, the pressure spring lower support is on the ring boss of screw (10), the top tight sealing ring makes progress, to be close to the gap between gland (6) and the screw (10), realize mechanical seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93216783 CN2163909Y (en) | 1993-06-30 | 1993-06-30 | Mechanical sealed energy-saving stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93216783 CN2163909Y (en) | 1993-06-30 | 1993-06-30 | Mechanical sealed energy-saving stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2163909Y true CN2163909Y (en) | 1994-05-04 |
Family
ID=33796873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93216783 Expired - Fee Related CN2163909Y (en) | 1993-06-30 | 1993-06-30 | Mechanical sealed energy-saving stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2163909Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314116A (en) * | 2017-06-23 | 2017-11-03 | 南通国电电站阀门股份有限公司 | A kind of overcritical pneumatic cut-off throttle valve of heavy caliber pressure-releasing type |
| CN107575586A (en) * | 2017-09-21 | 2018-01-12 | 安徽荣达阀门有限公司 | One kind rotatably compresses valve |
| CN108916392A (en) * | 2018-07-27 | 2018-11-30 | 苏州嘉迈德电子科技有限公司 | It is a kind of can accurate water yield adjusting valve |
-
1993
- 1993-06-30 CN CN 93216783 patent/CN2163909Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314116A (en) * | 2017-06-23 | 2017-11-03 | 南通国电电站阀门股份有限公司 | A kind of overcritical pneumatic cut-off throttle valve of heavy caliber pressure-releasing type |
| CN107575586A (en) * | 2017-09-21 | 2018-01-12 | 安徽荣达阀门有限公司 | One kind rotatably compresses valve |
| CN108916392A (en) * | 2018-07-27 | 2018-11-30 | 苏州嘉迈德电子科技有限公司 | It is a kind of can accurate water yield adjusting valve |
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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 |