CN203146943U - Durable high-temperature spring fall lift safety valve - Google Patents
Durable high-temperature spring fall lift safety valve Download PDFInfo
- Publication number
- CN203146943U CN203146943U CN 201320025543 CN201320025543U CN203146943U CN 203146943 U CN203146943 U CN 203146943U CN 201320025543 CN201320025543 CN 201320025543 CN 201320025543 U CN201320025543 U CN 201320025543U CN 203146943 U CN203146943 U CN 203146943U
- Authority
- CN
- China
- Prior art keywords
- valve
- spring
- bonnet
- flap
- valve seat
- 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
Abstract
The utility model discloses a durable high-temperature spring fall lift safety valve which comprises a valve, a lower valve cover, an upper valve cover and a valve bonnet. A valve seat is arranged at the lower end of the valve, a recoil disc is arranged in the valve, a T-shaped guide disc is sleeved on the periphery of the recoil disc, a valve clack corresponding to the valve seat is mounted at the lower end of the recoil disc, a valve stem is connected to the upper end of the recoil disc, the upper end of the valve stem penetrates through the lower valve cover and extends into the upper valve cover, spring seats which are respectively positioned at the inner upper end and the inner lower end of the upper valve cover are sleeved on the valve stem, a compression spring is mounted between the two spring seats, a rotatable sealing ring which is matched with the valve clack is sleeved on the upper end surface of the valve seat, the valve clack is tightly abutted to the sealing ring at the upper end of the valve seat by the aid of the pressure of the compression spring so as to be sealed, and an annular sealing protrusion which is outwardly protruded is arranged on a sealing surface of a joint of the valve clack and the sealing ring. The durable high-temperature spring fall lift safety valve has the advantages that the durable high-temperature spring fall lift safety valve is simple and reasonable in structure and long in service life, the abrasion resistance of the valve clack is effectively improved, damage to the sealing surface is relieved, and the serviceability of the safety valve is guaranteed.
Description
Technical field
The utility model relates to a kind of safety valve, is specially a kind of durable type high temperature spring Fall lift safety valve.
Background technique
Direct spring loaded safety valve refer to rely on spring elastic pressure and with Sealing lockings such as the valve of valve or plungers, in case the high pressure that produces after the pressure anomaly of pressurized container will overcome the spring pressure of safety valve, so blocking device is backed down, formed a pressure release passage, high pressure is released.Direct spring loaded safety valve is mainly used in pressurized boiler, container, pipeline, to guarantee that pressurized system normally moves.The high temperature spring Fall lift safety valve does not contact with medium because its spring mechanism directly is in the atmosphere, therefore has resistance to high temperature preferably.In the using process of existing high temperature spring Fall lift safety valve, need sometimes cracking pressure is adjusted, and when being rotated adjusting, flap is driven to rotate, and then cause sealing surface impaired easily, sealing descends, and shorten working life, influences the using effect of safety valve.
The model utility content
The purpose of this utility model provides a kind of durable type high temperature spring Fall lift safety valve, when being rotated adjusting, flap is driven to rotate to solve high temperature spring Fall lift safety valve traditional in the prior art, and then cause sealing surface impaired easily, sealing descends, shorten working life, influences the problem of safety valve using effect.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of durable type high temperature spring Fall lift safety valve, comprise the valve body that links to each other successively from bottom to top, bottom flange, bonnet and bonnet, it is characterized in that: described bonnet one side is provided with uncovered, described valve body lower end is provided with valve seat, be provided with the Disc holder that periphery is set with T type positioning disk in the valve body, described Disc holder lower end is equipped with the flap corresponding with valve seat, the upper end is connected with valve rod, bottom flange is passed in described valve rod upper end, and stretch in the bonnet, be set with on the described valve rod lay respectively in the bonnet on, the spring seat of lower end, between described two spring seats compression spring is installed, described valve seat upper end end face is with the rotating seal ring that matches with flap, described flap forms sealing by the seal ring that the pressure that compresses spring pushes against in the valve seat upper end, and the sealing surface of described flap and seal ring connecting part is provided with the ring packing projection of outside protrusion.
Described a kind of durable type high temperature spring Fall lift safety valve, it is characterized in that: described valve seat, flap, Disc holder and seal ring all adopt titanium alloy to make.
The beneficial effects of the utility model are:
The utility model is simple and reasonable, easy to use, the rotating seal ring design that employing matches with flap in the end face setting of valve seat upper end, make safety valve when carrying out the cracking pressure adjustment, if flap is followed valve rod and is rotated, then seal ring also and then rotates, and has alleviated the damaged phenomenon of sealing surface effectively; And the sealing surface of employing in flap and valve seat connecting part arranges the design of the ring packing projection of outside protrusion, promoted the wear-resisting property of flap effectively, still can keep better seal after long-time use is frayed, prolong the working life of safety valve, guaranteed the normal use of safety valve.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, a kind of durable type high temperature spring Fall lift safety valve, comprise the valve body 1 that links to each other successively from bottom to top, bottom flange 2, bonnet 3 and bonnet 4, bonnet 3 one sides are provided with uncovered, valve body 1 lower end is provided with valve seat 5, be provided with the Disc holder 7 that periphery is set with T type positioning disk 6 in the valve body 1, Disc holder 7 lower ends are equipped with the flap 8 corresponding with valve seat 5, the upper end is connected with valve rod 9, bottom flange 2 is passed in valve rod 9 upper ends, and stretch in the bonnet 3, be set with on the valve rod 9 lay respectively in the bonnet 3 on, the spring seat 10 of lower end, compression spring 11 is installed between two spring seats 10, valve seat 5 upper end end faces are with the rotating seal ring 12 that matches with flap 8, flap 8 forms sealing by the seal ring 12 that the pressure that compresses spring 11 pushes against in valve seat 5 upper ends, and the sealing surface of flap 8 and seal ring 12 connecting parts is provided with the ring packing projection 13 of outside protrusion.
Valve seat 5, flap 8, Disc holder 7 and seal ring 12 all adopt titanium alloy to make.
Claims (2)
1. durable type high temperature spring Fall lift safety valve, comprise the valve body that links to each other successively from bottom to top, bottom flange, bonnet and bonnet, it is characterized in that: described bonnet one side is provided with uncovered, described valve body lower end is provided with valve seat, be provided with the Disc holder that periphery is set with T type positioning disk in the valve body, described Disc holder lower end is equipped with the flap corresponding with valve seat, the upper end is connected with valve rod, bottom flange is passed in described valve rod upper end, and stretch in the bonnet, be set with on the described valve rod lay respectively in the bonnet on, the spring seat of lower end, between described two spring seats compression spring is installed, described valve seat upper end end face is with the rotating seal ring that matches with flap, described flap forms sealing by the seal ring that the pressure that compresses spring pushes against in the valve seat upper end, and the sealing surface of described flap and seal ring connecting part is provided with the ring packing projection of outside protrusion.
2. a kind of durable type high temperature spring Fall lift safety valve according to claim 1, it is characterized in that: described valve seat, flap, Disc holder and seal ring all adopt titanium alloy to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320025543 CN203146943U (en) | 2013-01-17 | 2013-01-17 | Durable high-temperature spring fall lift safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320025543 CN203146943U (en) | 2013-01-17 | 2013-01-17 | Durable high-temperature spring fall lift safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203146943U true CN203146943U (en) | 2013-08-21 |
Family
ID=48974467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320025543 Expired - Fee Related CN203146943U (en) | 2013-01-17 | 2013-01-17 | Durable high-temperature spring fall lift safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203146943U (en) |
-
2013
- 2013-01-17 CN CN 201320025543 patent/CN203146943U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20130821 Termination date: 20160117 |
|
| EXPY | Termination of patent right or utility model |