CN2494906Y - Double hard sealing ball valve - Google Patents
Double hard sealing ball valve Download PDFInfo
- Publication number
- CN2494906Y CN2494906Y CN 01233756 CN01233756U CN2494906Y CN 2494906 Y CN2494906 Y CN 2494906Y CN 01233756 CN01233756 CN 01233756 CN 01233756 U CN01233756 U CN 01233756U CN 2494906 Y CN2494906 Y CN 2494906Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve seat
- ball valve
- hard
- spheroid
- 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
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- Taps Or Cocks (AREA)
Abstract
The utility model discloses a double hard sealing ball valve. A main valve body is connected with a rack board and a compressing ring is adjustably and flexibly connected with the rack board.II-type flexible metal valve seats are arranged among the compressing ring, the rack board and a ball body. A hard host-plate seal is formed between the valve seat and the ball body, and a vice-plate seal between the valve seat and the rack board, leading to a dual-hard seal. Dynamic seal control function is realized when the medium force and manufacturing error lead to the place change of the working elements in the ball valve by means of the digital adjustment of the correspondent elements through the specialized torque meter and the flexibility of the II-type metal valve seat. The utility model has good airproof effectiveness. And the ball valve of designed torque value can be stably opened and closed. The performance of the utility model is significantly improved and the service life is greatly prolonged.
Description
Technical field
The utility model relates to a kind of ball valve, particularly two hard back seal ball valve.It belongs to fixedly spherical ball valve.
Background technique
Usually, it is a lot of to be used for the ball valve kind that effective control flows body medium flows in China, and floating ball ball valve, fixedly spherical ball valve, elastic ball ball valve, tee ball valve are arranged.And a kind of fixedly spherical ball valve was once disclosed.It is mainly by main valve body, be positioned at the spheroid of main valve body inner chamber, spheroid is connected with the upper valve rod key, be connected with the lower valve rod drive fit, and upper valve rod is connected with the main valve body bearing, and be tightly connected through rubber seal, sealing gland and main valve body, lower valve rod is connected with the main valve body bearing, and seal by bottom cover members, spheroid is connected with the valve seat flexible sealing through rubber seal, forms main soft seal pair, and valve seat is connected with side valve body flexible sealing through rubber gasket again, form secondary soft seal pair, and the side valve body compresses to be connected and constitutes by bolt and main valve body.Though it is little that this ball valve has flow resistance, advantages such as open-close convenient,, because of major and minor sealing pair is soft seal, sealing effect is not good enough, and Sealing is easily aging, meets the yielding damage of cold flow, and working life is short.Simultaneously, using scope is restricted, and it only is applicable to the low temperature below 200 ℃, and is difficult to reach and adjusts and the control sealing pair is stressed and the requirement of seal pressure, and open and close torque is big, is difficult to reach the torque demand of normal keying.
The model utility content
The purpose of this utility model is to provide a kind of two hard back seal ball valve, it can overcome the deficiency of prior art, adopts major and minor two hard sealing pair, can adjust the stressed and seal pressure of control sealing pair effectively, thereby can solve the regulation and control problem of ball valve dynamic seal (packing), and can reach sealing effectively.
Its solution is: main valve body is connected with frame plate, frame plate is connected with the pressure ring adjustable movable by regulating bolt again, so that adopting special-purpose torque meter to carry out digital display by correlated parts regulates, between their threes of pressure ring, spheroid and frame plate, be provided with the elastic metallic valve seat, and be tightly connected between elastic metallic valve seat and the spheroid, form main hard sealing pair, be tightly connected again and between the frame plate, form secondary hard sealing pair.In the lower valve rod lower end that links to each other with spheroid the bottom of being with adjusting element is arranged, be used to regulate the relative position of spheroid.And the elastic metallic valve seat is the ∏ type.It forms according to elastomechanics and annular sheet calculating principle design.Moreover the elastic metallic seat portion has the conical surface, and because of the bilateral stressed difference that has of ∏ type valve seat, it is between the 1.4-1.5 that its bilateral thickness differs ratio.
The utility model mainly is to produce main hard sealing pair between spheroid and ∏ type elastic metallic valve seat, and produces secondary hard sealing pair between ∏ type elastic metallic valve seat and the frame plate, forms two hard sealings.And adopt special-purpose torque meter by pressure ring, regulate the digital display adjusting of correlated parts such as bolt and the elastic reaction of ∏ type elastic metallic valve seat, thereby can reach the requirement of dynamic seal (packing) regulation and control under the applying working condition.Moreover ∏ type elastic metallic valve seat can produce bilateral bullet variable W=150-450 μ m, can adapt to medium power to the dislocation that factors such as workpiece in the ball valve and manufacturing form and position tolerance produce, and can guarantee good sealing effect effectively.Simultaneously, also can satisfy high parameter such as high temperature, high pressure use, and can realize the open and close that ball valve is stable in the design torque value, also can realize the effect of high-efficiency product, the ratio of its price and cost reaches more than 3.Moreover, because of adopting two hard sealing structures, being difficult for contaminated requirement as drinking with medical medium so can not only satisfy clean medium, and, can also improve widely usability and working life.
Description of drawings
Accompanying drawing is the structural front view of two hard back seal ball valve
Embodiment
Describe embodiment in detail below in conjunction with accompanying drawing.
In the accompanying drawing, the spheroid 10 that is positioned at main valve body 3 inner chambers is connected with main valve body 3 bearings by the lower valve rod 4 that is connected with its drive fit, and through bottom 1 sealing.Described bottom 1, is made up of with adjustment bolt 23 and seal ring 26 that lower cover 21 is tightly connected by seal ring 25, pad 24 and pressure cap 22 lower cover 21.Handle and adjust bolt 23, can adjust the relative position of spheroid 10, to reach better seal.Spheroid 10 connects with main valve body 3 bearings through the upper valve rod 13 that flat key 12 is connected with its key again, the upper end of upper valve rod 13 is connected with drive unit 19, and compress through pad 15, graphite on asbestos cord packing 16, gland 18 and bolt, nut and main valve body 3 and to be tightly connected, and drive unit 19 is fixedlyed connected with main valve body 3 by the dish 17 of connecing of fixedlying connected with it.One side of main valve body 3 is fixedlyed connected with frame plate 6 by bolt, and pressure ring 7 is connected with frame plate 6 adjustable movables through regulating bolt 8, is placed with both sides thickness between their threes of pressure ring 7, frame plate 6 and spheroid 10 and differs ratio and be
And the ∏ type elastic metallic valve seat 9 of the conical surface is arranged at the bottom, and sealing firmly between this valve seat and the main valve body 3 produces main hard sealing pair, and and sealing firmly between the frame plate 6, produce secondary hard sealing pair.Left side valve body 5 is fixedlyed connected with main valve body 3 by bolt, nut, and right side valve body 20 is fixedlyed connected with main valve body 3 by bolt, nut.
Claims (3)
1. two hard back seal ball valve, comprise main valve body, be positioned at the spheroid of main valve body and the valve seat that links to each other with spheroid, it is characterized in that main valve body (3) is connected with frame plate (6), pressure ring (7) is connected with frame plate (6) adjustable movable by regulating bolt (8), in pressure ring (7), be provided with elastic metallic valve seat (9) between their threes of spheroid (10) and frame plate (6), and be tightly connected firmly between elastic metallic valve seat (9) and the spheroid (10), form main hard sealing pair, and and be tightly connected firmly between the frame plate (6), form secondary hard sealing pair, there is coupled adjustable bottom (1) lower valve rod (4) lower end that links to each other with spheroid (10).
2. two hard back seal ball valve as claimed in claim 1 is characterized in that elastic metallic valve seat (9) is the ∏ type.
3. two hard back seal ball valve as claimed in claim 1 is characterized in that the conical surface is arranged at elastic metallic valve seat (9) bottom, and both sides thickness to differ ratio be between the 1.4-1.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01233756 CN2494906Y (en) | 2001-08-03 | 2001-08-03 | Double hard sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01233756 CN2494906Y (en) | 2001-08-03 | 2001-08-03 | Double hard sealing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2494906Y true CN2494906Y (en) | 2002-06-12 |
Family
ID=33647487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01233756 Expired - Fee Related CN2494906Y (en) | 2001-08-03 | 2001-08-03 | Double hard sealing ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2494906Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895172A (en) * | 2015-12-18 | 2017-06-27 | 纽威阀门有限公司 | New pressure transmitting type ball valve |
| CN107524827A (en) * | 2017-10-24 | 2017-12-29 | 四川森洁燃气设备有限公司 | A kind of pressure adjusting type pressure-reducing valve |
-
2001
- 2001-08-03 CN CN 01233756 patent/CN2494906Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895172A (en) * | 2015-12-18 | 2017-06-27 | 纽威阀门有限公司 | New pressure transmitting type ball valve |
| CN107524827A (en) * | 2017-10-24 | 2017-12-29 | 四川森洁燃气设备有限公司 | A kind of pressure adjusting type pressure-reducing 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 |