CN204025727U - Steel plateform gate valve - Google Patents
Steel plateform gate valve Download PDFInfo
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- CN204025727U CN204025727U CN201420448918.8U CN201420448918U CN204025727U CN 204025727 U CN204025727 U CN 204025727U CN 201420448918 U CN201420448918 U CN 201420448918U CN 204025727 U CN204025727 U CN 204025727U
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Abstract
The utility model discloses a kind of steel plateform gate valve, it is a kind of pipeline valve damming for liquid medium in pipeline, its structure is to consist of valve body, valve seat, valve gap, support, flashboard, valve rod and handwheel etc., be mainly on the seal face of valve seat, to be provided with concentric setting-in and to make with flashboard hard sealing layer and the soft seal circle that sealing contacts, it is peripheral that this soft seal snare is combined in hard sealing layer; Therefore, thisly on valve seat, adopt soft, the sealing surface composition form that closes of scleroma can not only effectively improve the sealability of valve, and be difficult for occurring pit because liquid medium washes away, improve the working life of valve; And the outer peripheral surface of valve seat and exterior edge face form sealing respectively and between valve body and install, it can realize the sealability of valve inlet end, prevent the valve seat place that fine impurities in liquid medium enters entrance point, and cause the valve seat at this place to occur the phenomenons such as wearing and tearing or spot corrosion, reduce valve leak.
Description
Technical field
The utility model relates to a kind of pipeline valve structure, specifically refers to steel plateform gate valve.
Background technique
Plate valve is a kind of in many pipeline valves, and it is all widely applied at oil, rock gas, chemical field, and plays the crown_interception of controlling liquid medium in pipeline.At present, the sealing pair of existing plate valve adopts soft sealing structure conventionally, if disclosed Chinese invention patent application number is 201310577351.4 " Flow-rate adjustment plate valve ", when the flashboard of this plate valve is opened, the rubber seal face of valve seat washes away and is easily washed out pit down in the brute force of liquid medium, thereby makes the seal failure of valve and cause leakage.In addition, valve adopts the sealing configuration of outlet end conventionally, and this sealing configuration easily occurs that the fine impurities in liquid medium enters the valve seat place of entrance point, and then causes the valve seat at this place to occur the phenomenons such as wearing and tearing or spot corrosion, thereby causes the leakage of valve.Therefore,, for the existing defect of existing plate valve and deficiency, design a kind of favorable sealing property, plate valve that cost of production is lower is extremely necessary.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the defect of prior art and the steel plateform that a kind of Open-close sealing is reliable, usability is good gate valve is provided.
Technical problem of the present utility model is achieved through the following technical solutions:
A steel plateform gate valve, comprises valve body, valve gap, support, flashboard, valve rod and handwheel; In described valve body, be provided with the valve seat that coordinates flashboard and opened and closed by flashboard sealing; In described support, be provided with the Stem Mut of screw thread active mounting valve rod, described valve base sealing is arranged in valve body, on the seal face of valve seat, be provided with concentric setting-in and make with flashboard hard sealing layer and the soft seal circle that sealing contacts, it is peripheral that this soft seal snare is combined in hard sealing layer.
Described hard sealing layer is the stainless steel sealing layer that stainless steel built-up welding forms, and this soft seal circle is polytetrafluoroethylsealed sealed circle, and the sealing surface of described soft seal circle exceeds the sealing surface of hard sealing layer.
The sealing installation structure of described valve seat in valve body is on the outer peripheral surface of valve seat, to be embedded with " O " the type circle, and be embedded with on the exterior edge face of valve seat with shoulder in valve body and make to seal "O"-ring and the end washer contacting of doing with the internal chamber wall of valve body that sealing contact.
Described valve body inner bottom surface is provided with fixed block, limiting stopper and the setting sleeve of installing with flashboard coaxial inner conductor, and described fixed block and limiting stopper are arranged in setting sleeve, and described flashboard bottom is movable to be contacted on limiting stopper through setting sleeve.
Described flashboard bottom is provided with the arch scrobicular ring contacting on limiting stopper.
Between described valve rod and valve gap, be provided with the gland that sealing is installed, be provided with the oil hole connecting to valve rod in this gland, described valve gap is provided with valve gap lubricating cup and protecting cover, and the import of this valve gap lubricating cup is connected with the oil hole on gland.
Between described Stem Mut and support, be provided with the bearing supporting that rotates, this Stem Mut upper end is stretched out support handwheel is installed, and this cradle top surface is provided with bearing gland.
Described Stem Mut outer peripheral surface is provided with the outer shoulder of a circle supporting, and the upper and lower both sides of the outer shoulder of this supporting are respectively equipped with the bearing of supporting valve rod nut rotation.
Described support is provided with the oil hole connecting to Stem Mut, and the inlet of this oil hole is provided with support lubricating cup.
Described Stem Mut end face is provided with hard-wired protective housing, in this protective housing, is provided with pointer, and the lower end of pointer and valve rod be connected and fixed, and the movable upper end of pointer exposes through protective housing.
Compared with prior art, the utility model is mainly on the seal face of valve seat, to be provided with concentric setting-in and to make with flashboard hard sealing layer and the soft seal circle that sealing contacts, and it is peripheral that this soft seal snare is combined in hard sealing layer; Therefore, thisly on valve seat, adopt soft, the sealing surface composition form that closes of scleroma can not only effectively improve the sealability of valve, and be difficult for occurring pit because liquid medium washes away, improve the working life of valve; And the outer peripheral surface of valve seat and exterior edge face form sealing respectively and between valve body and install, it can realize the sealability of valve inlet end, prevent the valve seat place that fine impurities in liquid medium enters entrance point, and cause the valve seat at this place to occur the phenomenons such as wearing and tearing or spot corrosion, reduce valve leak.
Accompanying drawing explanation
Fig. 1 is sectional structure schematic diagram of the present utility model (half sectional view).
Fig. 2 is the left view (half sectional view) of Fig. 1.
Fig. 3 is the sectional structure schematic diagram of valve seat.
Embodiment
To the utility model embodiment, elaborate again by above-mentioned accompanying drawing below.
As shown in Fig. 1 ~ Fig. 3, 1. valve body, 2. socket head screw, 3. fixed block, 4. limiting stopper, 5. setting sleeve, 6. valve seat, 7. flashboard, 8. "O"-ring, 9. end washer, 10. valve rod, 11. hexagon nuts, 12. stud bolts, 13. seal washers, 14. valve gaps, 15. glands, 16. oil holes, 17. valve gap lubricating cups, 18. protecting covers, 19. Cock screws, 20. supports, 21. bearings, 22. Stem Muts, 23. support lubricating cups, 24. bearing glands, 25. handwheels, 26. pointers, 27. protective housings, 28. hexagonal spiro plugs, 29. pressing plates, 30. hard sealing layers, 31. soft seal circles.
Steel plateform gate valve, as shown in Figure 1 and Figure 2, it is a kind of pipeline valve damming for liquid medium in pipeline, its structure is mainly to consist of valve body 1, valve seat 6, valve gap 14, support 20, flashboard 7, valve rod 10 and handwheel 25 etc.
The described rectangular shape of valve body 1 cross section is provided with the entery and delivery port that level connects in valve body, and this entery and delivery port is equipped with flange plate, and valve body 1 end face is also provided with middle flanged surface, connects or installs, the outer hexagonal spiro plug 28 that is provided with of valve body 1 to facilitate.
In described valve body 1, be provided with the valve seat 6 that sealing is installed between entery and delivery port, its mounting structure is as shown in Figure 3: the outer peripheral surface of valve seat 6 be provided with radially around annular groove, in this annular groove, be embedded with "O"-ring 8, therefore valve seat 6 forms sealing by the "O"-ring on outer peripheral surface with the internal chamber wall of valve body 1, contact; Simultaneously, the exterior edge face of valve seat 6 is provided with the end face annular groove with valve seat 6 concentrics, in this end face annular groove, be also embedded with "O"-ring 8, and the periphery, exterior edge face of valve seat 6 is also embedded with end washer 9, therefore can forming sealing with end washer 9 with the interior shoulder of valve body 1 by "O"-ring 8, the exterior edge face of valve seat 6 contacts.
In described valve seat 6, be provided with and do elevating movement and then form with valve seat 6 flashboard 7 that sealing opens and closes, this flashboard is arranged in valve body 1 along the track of guide rail, in flashboard 7 bottoms, is provided with arch scrobicular ring.
Described valve body 1 inner bottom surface is provided with fixed block 3, limiting stopper 4 and the setting sleeve 5 of installing with flashboard 7 coaxial inner conductors, this fixed block 3 and limiting stopper 4 are arranged in setting sleeve 5, and by socket head screw 2, fixed block 3 and limiting stopper 4 are integrally connected with valve body 1, this setting sleeve 5 is arranged in the reserved axle sleeve hole of valve body 1 inner bottom surface, the movable setting sleeve 5 that passes of arch scrobicular ring of flashboard 7 bottoms contacts on limiting stopper 4, thereby make the sealing surface center of flashboard 7 and the inlet/outlet runner center of valve body 1 consistent, to improve the sealability of valve.
Described valve seat 6 interior edge faces, be that seal face contacts with flashboard 7 do sealings, on the seal face of valve seat 6, be provided with hard sealing layer 30 and the soft seal circle 31 of concentric setting-in, the stainless steel sealing layer that this hard sealing layer 30 adopts stainless steel built-up welding to form, soft seal circle 31 adopts polytetrafluoroethylsealed sealed circle, soft seal snare is combined in hard sealing layer 30 peripheries, and the sealing surface of soft seal circle 31 need exceed the sealing surface of hard sealing layer 30, its purpose of design is: when valve is in closed condition, the sealing surface of flashboard 7 will first form sealing with soft seal circle 31 and contact, then along with making hard sealing layer 30 form sealing with the sealing surface of flashboard 7 under the promotion of liquid medium again, valve seat 6 contacts, therefore the interior edge face of valve seat 6 just can be by soft, between the sealing surface that closes of scleroma and flashboard 7, forming double seal contacts.
Described valve gap 14 is fixedly connected on by stud bolt 12 and hexagon nut 11 on the middle flanged surface of valve body 1 end face, between the middle flanged surface of valve gap 14 and valve body 1, seal washer 13 is installed and is connected sealing; Described support 20 is also sealedly connected on valve gap 14 end faces by stud bolt 12 and hexagon nut 11.
In described valve gap 14 and support 20, be provided with a valve rod 10 of vertically installing, this valve rod is a threaded stem structure, and its lower end is connected flashboard 7 through pressing plate 29, hex head bolt and hexagon nut, and expose through support 20 upper end; Between described valve rod 10 and valve gap 14 tops, be provided with gland 15, this gland is arranged in the default mounting groove in valve gap 14 tops, on the lower end of gland 15 and inside and outside circumferential surface, be equipped with "O"-ring 8, can be respectively and valve rod 10, mounting groove between form and be sealed and matched, and be fixed by Cock screw 19; In described gland 15, be provided with the oil hole 16 connecting to valve rod 10, outer setting the valve gap lubricating cup 17 being threaded and the protecting cover 18 that is connected to valve gap lubricating cup port of also needing of valve gap 14, and the import of valve gap lubricating cup 17 is connected with the oil hole 16 on gland 15, the lubricated oiling so that valve rod 10 operation to be provided.
Between described valve rod 10 and support 20 tops, be provided with Stem Mut 22, it between valve rod 10 and Stem Mut 22, is screw thread active mounting structure, on the outer peripheral surface of Stem Mut 22, be provided with shoulder outside a circle supporting, the upper and lower both sides of the outer shoulder of this supporting are respectively equipped with flat thrust ball bearing 21, two bearings are arranged in the default mounting groove in support 20 tops together with shoulder outside supporting, then the bearing gland 24 by cradle top surface connects compression, therefore Stem Mut 22 can form from then can not produce axial float; Described Stem Mut 22 upper ends are stretched out support 20 and are provided with hard-wired handwheel 25, and by the operation of handwheel, drive the rotation of Stem Mut 22, therefore the rotation of Stem Mut 22 just can change into rotatablely moving with the rising of ovable valve stem 10 or the elevating movement of decline, and then also drive the lifting of flashboard 7, make to form sealing between flashboard and valve seat 6 and open and close.
On described support 20, be also provided with the oil hole connecting to Stem Mut 22, the inlet of this oil hole is provided with support lubricating cup 23 so that the oil injecting lubricating of Stem Mut 22, thus the frictional force producing while reducing transmission between valve rod 10 and Stem Mut 22.
Described Stem Mut 22 end faces are provided with the fixing protective housing 27 that is threaded, in this protective housing, be provided with pointer 26, and by hexagon nut 11, form and be connected and fixed between the lower end of pointer and valve rod 10, the upper end of pointer 26 can be subject to the elevating movement of valve rod 10 and movable through protective housing 27, expose, thereby intuitively shows the enable possition of current flashboard 7.
The above is only better embodiment of the present utility model, and the equivalence of doing according to structure, feature and principle described in the utility model patent claim therefore all changes or modifies, and is included in the utility model patent claim.
Claims (10)
1. a steel plateform gate valve, comprises valve body (1), valve gap (14), support (20), flashboard (7), valve rod (10) and handwheel (25); In described valve body (1), be provided with the valve seat (6) that coordinates flashboard (7) and opened and closed by flashboard sealing; In described support (20), be provided with the Stem Mut (22) of screw thread active mounting valve rod (10), it is characterized in that described valve seat (6) sealing is arranged in valve body (1), on the seal face of valve seat (6), be provided with concentric setting-in and make with flashboard (7) hard sealing layer (30) and the soft seal circle (31) that sealing contacts, this soft seal snare is combined in hard sealing layer (30) periphery.
2. steel plateform gate valve according to claim 1, it is characterized in that the stainless steel sealing layer that described hard sealing layer (30) forms for stainless steel built-up welding, this soft seal circle (31) is polytetrafluoroethylsealed sealed circle, and the sealing surface of described soft seal circle exceeds the sealing surface of hard sealing layer (30).
3. steel plateform gate valve according to claim 1 and 2, it is characterized in that the sealing installation structure of described valve seat (6) valve body (1) in is on the outer peripheral surface of valve seat (6), to be embedded with " O " the type circle (8), and be embedded with on the exterior edge face of valve seat (6) and take on work valve body (1) in and seal "O"-ring (8) and the end washer (9) contacting of doing with the internal chamber wall of valve body (1) that sealing contact.
4. steel plateform gate valve according to claim 1 and 2, it is characterized in that described valve body (1) inner bottom surface is provided with fixed block (3), limiting stopper (4) and the setting sleeve (5) of installing with flashboard (7) coaxial inner conductor, described fixed block (3) and limiting stopper (4) are arranged in setting sleeve (5), and described flashboard (7) bottom is movable to be contacted on limiting stopper (4) through setting sleeve (5).
5. steel plateform gate valve according to claim 4, is characterized in that described flashboard (7) bottom is provided with the arch scrobicular ring contacting on limiting stopper (4).
6. steel plateform gate valve according to claim 1 and 2, it is characterized in that being provided with between described valve rod (10) and valve gap (14) gland (15) of sealing installation, in this gland, be provided with the oil hole (16) connecting to valve rod (10), described valve gap (14) is provided with valve gap lubricating cup (17) and protecting cover (18), and the import of this valve gap lubricating cup (17) is connected with the oil hole (16) on gland (15).
7. steel plateform gate valve according to claim 1 and 2, it is characterized in that being provided with between described Stem Mut (22) and support (20) bearing (21) supporting that rotates, this Stem Mut (22) upper end is stretched out support (20) handwheel (25) is installed, and this support (20) end face is provided with bearing gland (24).
8. steel plateform gate valve according to claim 7, is characterized in that described Stem Mut (22) outer peripheral surface is provided with the outer shoulder of a circle supporting, and the upper and lower both sides of the outer shoulder of this supporting are respectively equipped with the bearing (21) that supporting valve rod nut (22) rotates.
9. steel plateform gate valve according to claim 7, is characterized in that described support (20) is provided with the oil hole connecting to Stem Mut (22), and the inlet of this oil hole is provided with support lubricating cup (23).
10. steel plateform gate valve according to claim 1 and 2, it is characterized in that described Stem Mut (22) end face is provided with hard-wired protective housing (27), in this protective housing, be provided with pointer (26), and the lower end of pointer and valve rod (10) are connected and fixed, the movable upper end of pointer (26) exposes through protective housing (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420448918.8U CN204025727U (en) | 2014-08-11 | 2014-08-11 | Steel plateform gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420448918.8U CN204025727U (en) | 2014-08-11 | 2014-08-11 | Steel plateform gate valve |
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| Publication Number | Publication Date |
|---|---|
| CN204025727U true CN204025727U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420448918.8U Active CN204025727U (en) | 2014-08-11 | 2014-08-11 | Steel plateform gate valve |
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| Country | Link |
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| CN (1) | CN204025727U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639949A (en) * | 2015-10-30 | 2017-05-10 | 上海新莲泵阀有限公司 | Anti-washout geothermal well mouth assembly |
| CN106639951A (en) * | 2015-10-30 | 2017-05-10 | 上海新莲泵阀有限公司 | Geothermal well assembly of the structure of a tube with casing |
| CN110206901A (en) * | 2019-05-31 | 2019-09-06 | 赵世荣 | A kind of electric control valve |
-
2014
- 2014-08-11 CN CN201420448918.8U patent/CN204025727U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639949A (en) * | 2015-10-30 | 2017-05-10 | 上海新莲泵阀有限公司 | Anti-washout geothermal well mouth assembly |
| CN106639951A (en) * | 2015-10-30 | 2017-05-10 | 上海新莲泵阀有限公司 | Geothermal well assembly of the structure of a tube with casing |
| CN110206901A (en) * | 2019-05-31 | 2019-09-06 | 赵世荣 | A kind of electric control valve |
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