CN202228709U - Metal hard seal abrasion-resistant floating ball valve - Google Patents
Metal hard seal abrasion-resistant floating ball valve Download PDFInfo
- Publication number
- CN202228709U CN202228709U CN2011202765832U CN201120276583U CN202228709U CN 202228709 U CN202228709 U CN 202228709U CN 2011202765832 U CN2011202765832 U CN 2011202765832U CN 201120276583 U CN201120276583 U CN 201120276583U CN 202228709 U CN202228709 U CN 202228709U
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- valve
- spool
- metal hard
- ball valve
- sealing
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- Expired - Fee Related
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Abstract
The utility model relates to a metal hard seal abrasion-resistant floating ball valve, which comprises a valve rod, a valve core, a valve seat, packing, a packing pressing sleeve, a packing pressing plate, a pressing plate screw and a handle. A locating piece is arranged on the valve rod. A location protrusion is arranged on the packing pressing plate so that the locating piece and the pressing plate screw cannot collide. The pressing plate screw only bears tension force of the press packing, thereby greatly improving force bearing of the pressing plate screw and guaranteeing the packing to reliably work in a sealing mode for a long time.
Description
Technical field
The utility model relates to a kind of metal seal ball valve, the wear-resisting floating ball valve of particularly a kind of metal hard-sealing.
Background technique
Carry in industries such as Coal Chemical Industry, refinery, metallurgy, electric power on the operating mode of media such as Heisui River, buck, pulp water, ore pulp, ashes; Medium mainly is mixed flow bodies such as gas-solid two phases, liquid-solid two-phase; Working condition is very abominable, belong to high temperature and high pressure condition, and medium is prone to scab, fouling; Solid particle hardness is all very high in the medium simultaneously, has extremely strong erosion, abrasiveness.The valve that this type operating mode is used mainly is a metal hard-sealing ball valve, but metal hard-sealing ball valve in use often appears at location piece and the collision of hold-down grid screw when closing or opening, and makes the hold-down grid screw loosening, causes the valve packing place to reveal.To this problem, make valve when closing or open, it is the key of dealing with problems that location piece and hold-down grid screw do not bump.
The model utility content
The purpose of the utility model provides a kind of valve when opening and closing, and location piece and bridge screw do not bump, thereby has strengthened the sealability at filler place.
The technological scheme of the utility model is: the wear-resisting floating ball valve of a kind of metal hard-sealing; Comprise valve rod, spool, valve seat, filler, filler gland, hold-down grid, bridge screw and handle; Described valve rod is provided with location piece, and hold-down grid is provided with positioning convex.
Preferably: described valve rod and valve body contact position surfacing nickel base alloy layer.
Preferably: described spool adopts stainless steel part system to forge, side runner face and lip place pile-up welding hard alloy layer in the spool face surfacing nickel base alloy layer, spool.
Preferably: described valve seat adopts stainless steel forgings manufacturing, sealing surface surfacing nickel base alloy layer, valve seat internal channel pile-up welding hard alloy layer.
The beneficial effect of the utility model is: the utility model hold-down grid is provided with positioning convex; Location piece and bridge screw are not bumped; Bridge screw only bears the pulling force that compresses filler, and the stressing conditions of bridge screw is improved greatly, guarantees that filler can the long term seal reliable work.At the equal surfacing nickel-base alloy of valve body and valve rod contact position, guarantee that connection part can not wear and tear and become flexible in long-term using process, make the work that valve can be reliably and with long-term.Spool adopts the stainless steel forgings manufacturing, the whole surfacing nickel-base alloys of spool sphere, and spray-welding coating processing back thickness is not less than 0.7mm; Hardness HRC60～65; The spool base material dissolves with surfacing metallurgy and combines, and adhesive strength is high, guarantees that spray material in use can not come off.Spool inner flow passage face and lip place pile-up welding hard alloy guarantee that spool has high abrasion resistance and high abrasion resistance.Valve seat adopts the stainless steel forgings manufacturing, sealing surface surfacing nickel-base alloy, and processing back thickness is not less than 2mm, hardness HRC56～60, the valve seat base material dissolves with surfacing metallurgy and combines, and adhesive strength is high, guarantees that spray material in use can not come off.Valve seat internal channel pile-up welding hard alloy guarantees that valve seat has high abrasion resistance and high abrasion resistance.Valve rod adopts the material of high tenacity, scrape resistence, good corrosion resistance, and diameter makes valve rod have bigger intensity greater than ad eundem design standard stem diameter, guarantees can not twisted off, be out of shape and damage at the opposite extreme situations lower valve rod
Description of drawings
Fig. 1 is the structural representation of the utility model
Fig. 2 is the plan view of Fig. 1
Embodiment
Embodiment below in conjunction with description of drawings the utility model:
Shown in Fig. 1-2; The utility model metal hard-sealing wear resistance ball valve comprises valve seat 1, spool 2, valve rod 3, valve body 4, filler 5, filler gland 6, bridge screw 7, hold-down grid 8, location piece 9, handle 10; Pull handle 10 and drive spool 2 rotations, thereby reach the valve opening and closing process through valve rod 3.
The utility model metal hard-sealing wear resistance ball valve adopts hold-down grid 8 to be provided with positioning convex 11; Location piece 9 and positioning convex 11 effects; 7 of bridge screws bear the thrust that the pulling force that compresses filler 5 and medium make progress; The stressing conditions of bridge screw is improved greatly, and valve rod 3 adopts the material of high tenacity, scrape resistence, good corrosion resistance simultaneously, and diameter is greater than ad eundem design standard stem diameter; Make valve rod have bigger intensity, guarantee can not twisted off, be out of shape and damage at the opposite extreme situations lower valve rod.Valve rod 3 adopts the anti-structural design that flies out in addition.
The spool 2 of the utility model metal hard-sealing wear resistance ball valve adopts the stainless steel forgings manufacturing; The whole surfacing nickel-base alloys of spool sphere; Spray-welding coating processing back thickness is not less than 0.7mm, hardness HRC60～65, and the spool base material dissolves with surfacing metallurgy and combines; Adhesive strength is high, guarantees that spray material in use can not come off.Side runner surface build-up welding cemented carbide in the spool 2 guarantees that spool has high abrasion resistance and high abrasion resistance.Valve seat 1 adopts the stainless steel forgings manufacturing, sealing surface surfacing nickel-base alloy, and processing back thickness is not less than 2mm, hardness HRC56～60, valve seat 1 base material dissolves with surfacing metallurgy and combines, and adhesive strength is high, guarantees that spray material in use can not come off.Valve seat 1 internal channel pile-up welding hard alloy guarantees that valve seat has high abrasion resistance and high abrasion resistance.Be provided with Sealing protection in spring 4 both sides, can prevent that impurity and booty from getting into spring chamber, effectively prevents spring failure.The scraper type structural design is adopted in the sealing surface of seat both sides in addition, makes spool and valve seat in switching process, have self-cleaning function.
The above embodiment that lifts only uses to conveniently illustrating the utility model, and at the said technological scheme category of the utility model, the person of ordinary skill in the field does various simple deformation and modification, all should be included in the above claim.
Claims (4)
1. the wear-resisting floating ball valve of metal hard-sealing comprises valve rod, spool, valve seat, filler, filler gland, hold-down grid, bridge screw and handle, and it is characterized in that: described valve rod is provided with location piece, and hold-down grid is provided with positioning convex.
2. the metal hard-sealing as claimed in claim 1 wear resistance ball valve that floats is characterized in that: described valve rod and valve body contact position surfacing nickel base alloy layer.
3. the metal hard-sealing as claimed in claim 1 wear resistance ball valve that floats is characterized in that: described spool adopts stainless steel part system to forge, side runner face and lip place pile-up welding hard alloy layer in the spool face surfacing nickel base alloy layer, spool.
4. the metal hard-sealing as claimed in claim 1 wear resistance ball valve that floats is characterized in that: described valve seat adopts stainless steel forgings manufacturing, sealing surface surfacing nickel base alloy layer, valve seat internal channel pile-up welding hard alloy layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202765832U CN202228709U (en) | 2011-08-02 | 2011-08-02 | Metal hard seal abrasion-resistant floating ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202765832U CN202228709U (en) | 2011-08-02 | 2011-08-02 | Metal hard seal abrasion-resistant floating ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202228709U true CN202228709U (en) | 2012-05-23 |
Family
ID=46079295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202765832U Expired - Fee Related CN202228709U (en) | 2011-08-02 | 2011-08-02 | Metal hard seal abrasion-resistant floating ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202228709U (en) |
-
2011
- 2011-08-02 CN CN2011202765832U patent/CN202228709U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20120802 |