CN205918923U - Gate valve that leakproofness is strong - Google Patents
Gate valve that leakproofness is strong Download PDFInfo
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- CN205918923U CN205918923U CN201620979180.7U CN201620979180U CN205918923U CN 205918923 U CN205918923 U CN 205918923U CN 201620979180 U CN201620979180 U CN 201620979180U CN 205918923 U CN205918923 U CN 205918923U
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Abstract
The utility model relates to the field of valves, especially, relate to a gate valve that leakproofness is strong. A gate valve that leakproofness is strong, includes the valve body to and set up the valve gap on the valve body, and set up case subassembly in the valve pocket of valve body, and the drive is connected the valve rod of case subassembly, be equipped with on the valve body rather than the communicating medium runner of inside valve pocket difference, the medium runner includes medium flow inlet channel and medium play runner, the case subassembly sets up in the valve pocket between medium flow inlet channel and medium play runner, this gate valve adopts carves shape extruded principle, promotes gate valve sealing performance, extension gate valve life.
Description
Technical field
This utility model is related to valve field, the strong gate valve of more particularly, to a kind of sealing.
Background technology
Gate valve is presently the most one of important valve species, is belonging to a kind of stop valve class, effect be to turn on or
Block the medium in pipeline, have of completely closed and fully open two kinds of working conditions, it is widely used in liquid, gas, dust
Circulation and cut-off in medium.But, the following weak point of gate valve in the market: existing gate valve is forced seal structure,
Sealing is realized by the extruding of gate valve and valve seat, but flashboard and valve base chamber easily stuck phenomenon because of thermal expansion, cause valve
Do not open.And in the case of relatively rapid keying, the sealing contact surface of flashboard and valve seat is easily because mill in dynamic friction
Damage, substantially reduce the service life of valve.
Content of the invention
In order to solve the above problems, the purpose of this utility model is to provide a kind of sealing strong gate valve, and this gate valve is adopted
With the principle of wedge extruding, lift Gate-valve sealing performance, extend gate valve service life.
In order to realize above-mentioned purpose, this utility model employs following technical scheme:
A kind of strong gate valve of sealing, including valve body, and is arranged on the valve gap on valve body, and is arranged on described valve body
Valve pocket in core assembly, and the valve rod of core assembly described in drive connection；It is characterized in that: described valve body be provided with
The medium runner that its internal valve pocket communicates respectively, medium runner includes that medium enters runner and medium goes out runner；Described core assembly
Be arranged on medium and enter in the valve pocket that runner and medium go out between runner, core assembly include wedge type block, the block that rises, two pieces of seal discs and
Two leading trucks, two pieces of seal discs are arranged in parallel and are respectively at that medium enters runner and medium goes out the interior end opening of runner
On；Described leading truck is arranged on the valve body above seal disc, constitutes the guiding for pilot seal disk between two leading trucks
Track；Described valve rod inner end is between two pieces of seal discs, and wedge type block is connected on valve rod inner end, and seal disc offers
The positioning shaft hole paralleled with medium runner, the interior end side surface of seal disc is provided with locating shaft, the locating shaft setting of seal disc
In the positioning shaft hole of wedge type block；The described block that rises is between wedge type block and seal disc, the bottom of the block that rises and the inner of valve body
Face offsets, and the block that rises is hung on described wedge type block, and wedge type block is offseted with block inclined-plane cooperation of rising.
This utility model adopts technique scheme, and the core assembly in this gate valve adopts the run-in index of two pieces of seal discs close
Seal structure, that is, two pieces of seal discs are parallel with sealing surface；During progressively closing under core assembly is driven by valve rod, valve rod end
Wedge type block in portion tilts extruding and rises block, and the block that makes to rise moves parallel to medium runner direction, and makes to rise by block outwardly against close simultaneously
Closing disk, makes seal disc be sealed on sealing surface, realizes valve element and closes, using the principle of wedge extruding during being somebody's turn to do, makes seal disc
With the sealing surface tensioner cooperation of valve body, lift Gate-valve sealing performance.The process progressively opened under core assembly is driven by valve rod
In, wedge type block, rise by block and seal disc rises under the drive of valve rod, the guide rail guide spool constituting between two leading trucks
Assembly；During rising, wedge type block, for extruding force forfeiture, seal disc and the sealing surface no Relative friction of the block that rises, reduces
The keying moment of valve, reduces abrasion simultaneously, increases the service life of valve.
Brief description
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of core assembly.
Specific embodiment
Below in conjunction with the accompanying drawings, preferred embodiment of the present utility model is described in further detail.
A kind of gate valve as shown in Figure 1 and Figure 2, including valve body 1, and is arranged on the valve gap 2 on valve body 1, and is arranged on
Core assembly 3 in the valve pocket of described valve body 1, and the valve rod 4 of core assembly 3 described in drive connection, and drive connection institute
State the operating mechanism of valve rod 4.Described valve body 1 is provided with the medium runner communicating respectively with its internal valve pocket, and medium runner includes
Medium enters runner 11 and medium goes out runner 12, and the flow diameter that medium enters runner 11 with medium goes out runner 12 is identical and is in same
On axis, medium enters the medium entrance end of runner 11, and medium goes out to be equipped with flange disk body on the media outlet end of runner 12
13, flange disk body 13 and valve body 1 integrally connected casting, gate valve is used for being connected to medium pipeline by flange disk body 13.
Described valve gap 2 is fastened on valve body 1, the upper end open of valve gap 2 closeding valve cavity.Described valve rod 4 positioning wears
On valve gap 2, valve rod 4 bottom is in valve pocket, is provided with packing seal assembly, packing seal assembly bag between valve rod 4 and valve gap 2
Include filler 41, and cover 42 for positioning the filler of described filler, and for positioning the hold-down grid 43 of described filler set 42.
Filler in packing seal assembly is used for ensureing that the sealing between valve rod 4 and valve gap 2, filler set 42 and hold-down grid 43 are used for
Described filler is positioned, so that filler is fixed, prevent filler from producing pine in the friction process long-term with described valve rod 4
Dynamic；Thus lifting its sealing effectiveness, so that gate valve is difficult to produce medium leakage and permeate, ensureing that valve body 1 moves, extend valve body 1
Service life.
Described valve gap 2 is fixedly arranged above support 51, and valve rod 4 top is positioned inside support 51, is provided with use above support 51
In the protective cap 52 protecting described valve rod 4 end.Described operating mechanism includes operating handwheel 53, and coaxial with operation handwheel 53
The umbrella tooth 54 connecting, and it is set in the valve stem nut 55 on valve rod 4 upper end.Described valve stem nut 55 outer end is nibbled with umbrella tooth 54
Close and connect, the inner and described valve rod 4 of valve stem nut 55 is meshed.In said structure, the valve rod 4 of gate valve connects described core assembly
3, valve rod 4 described in operating mechanism drive connection.Wherein, operating mechanism drives umbrella tooth 54 to rotate using operation handwheel 53, umbrella tooth 54
With valve stem nut 55 engaged transmission being set on valve rod 4, between valve stem nut 55 and valve rod 4, constitute screw body, valve rod spiral shell
During female 55 rotate, valve rod 4 axial movement drives core assembly 3 to lift, and realizes the control to medium runner.Above-mentioned driving
Structure is simple, easy to operate and be easy to regular maintenance.
Described core assembly 3 is arranged on that medium enters runner 11 and medium goes out in the valve pocket between runner 12, and core assembly 3 wraps
Include wedge type block 31, rise 32, two pieces of seal discs 33 of block and two leading trucks 34, two pieces of seal discs 33 are arranged in parallel and locate respectively
Enter on the interior end opening that runner 11 and medium go out runner 12 in medium.Described leading truck 34 is arranged on the valve body of seal disc 33 top
On 1, between two leading trucks 34, constitute the guide rail for pilot seal disk 33.Described valve rod 4 inner end be in two pieces close
Between closing disk 33, wedge type block 31 is connected on valve rod 4 inner end, and seal disc 33 is offered the positioning paralleled with medium runner
Axis hole 35, the interior end side surface of seal disc 33 is provided with locating shaft 36, and the locating shaft 36 of seal disc 33 is arranged on wedge type block 31
In positioning shaft hole 35.The described block 32 that rises is between wedge type block 31 and seal disc 33, the bottom of the block 32 that rises and the inner of valve body 1
Face offsets, and the block 32 that rises is hung on described wedge type block 31, and wedge type block 31 is offseted with block 32 inclined-plane cooperation of rising.In said structure, lock
The core assembly 3 of valve adopts the run-in index sealing structure of two pieces of seal discs 33, and that is, two pieces of seal discs 33 are parallel with sealing surface.In valve
Core assembly 3 is driven down by valve rod 4 during progressively closing, and wedge type block 31 on valve rod 4 end tilts extruding and rises block 32, makes to rise
Block 32 moves parallel to medium runner direction, and makes to rise by block 32 outwardly against seal disc 33 simultaneously, so that seal disc 33 is sealed in close
On front cover, realize valve element and close, using the principle of wedge extruding during being somebody's turn to do, make the sealing surface tensioner of seal disc 33 and valve body 1
Cooperation, lifts Gate-valve sealing performance.During progressively opening under core assembly 3 is driven by valve rod 4, wedge type block 31, rise block
32 and seal disc 33 rise under the drive of valve rod 4, between two leading trucks 34 constitute guide rail guide spool assembly 3.
During rising, wedge type block 31, for extruding force forfeiture, seal disc 33 and the sealing surface no Relative friction of the block 32 that rises, reduces
The keying moment of valve, reduces abrasion simultaneously, increases the service life of valve.
It should be appreciated that above-mentioned specific embodiment of the present utility model is used only for exemplary illustration or explains this reality
With new principle, and do not constitute to restriction of the present utility model.Therefore, without departing from spirit and scope of the present utility model
In the case of any modification, equivalent substitution and improvement done etc., should be included within protection domain of the present utility model.Additionally,
This utility model claims are intended to fall into scope and border or this scope and border
Whole changes in equivalents and modification.
Claims (1)
1. the strong gate valve of a kind of sealing, including valve body, and is arranged on the valve gap on valve body, and is arranged on described valve body
Core assembly in valve pocket, and the valve rod of core assembly described in drive connection；It is characterized in that: described valve body is provided with and it
The medium runner that internal valve pocket communicates respectively, medium runner includes that medium enters runner and medium goes out runner；Described core assembly sets
Put and enter runner in medium and medium goes out in the valve pocket between runner, core assembly includes wedge type block, the block that rises, two pieces of seal discs and two
Individual leading truck, two pieces of seal discs are arranged in parallel and are respectively at that medium enters runner and medium goes out on the interior end opening of runner；
Described leading truck is arranged on the valve body above seal disc, constitutes the guided way for pilot seal disk between two leading trucks
Road；Described valve rod inner end is between two pieces of seal discs, and wedge type block is connected on valve rod inner end, seal disc offers with
The parallel positioning shaft hole of medium runner, the interior end side surface of seal disc is provided with locating shaft, and the locating shaft of seal disc is arranged on
In the positioning shaft hole of wedge type block；The described block that rises is between wedge type block and seal disc, the bottom of the block that rises and the inner face of valve body
Offset, the block that rises is hung on described wedge type block, wedge type block is offseted with block inclined-plane cooperation of rising.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620979180.7U CN205918923U (en) | 2016-08-29 | 2016-08-29 | Gate valve that leakproofness is strong |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620979180.7U CN205918923U (en) | 2016-08-29 | 2016-08-29 | Gate valve that leakproofness is strong |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205918923U true CN205918923U (en) | 2017-02-01 |
Family
ID=57869766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620979180.7U Active CN205918923U (en) | 2016-08-29 | 2016-08-29 | Gate valve that leakproofness is strong |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205918923U (en) |
-
2016
- 2016-08-29 CN CN201620979180.7U patent/CN205918923U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |