CN205278423U - Novel gate valve of nai high pressure and high temperature - Google Patents
Novel gate valve of nai high pressure and high temperature Download PDFInfo
- Publication number
- CN205278423U CN205278423U CN201521119970.XU CN201521119970U CN205278423U CN 205278423 U CN205278423 U CN 205278423U CN 201521119970 U CN201521119970 U CN 201521119970U CN 205278423 U CN205278423 U CN 205278423U
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- valve
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- gap
- valve rod
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Abstract
The utility model discloses a novel gate valve of nai high pressure and high temperature, including valve body, valve rod, valve gap and flashboard, the valve body is equipped with left valve channel, right valve channel, the valve gap sets up in the valve body upper end, and the valve rod upwards runs through the valve gap, valve gap upper portion is equipped with adjustable shaft seal structure with valve rod combination department, adjustable shaft seal structure is including pressing cover, sealing filler, adjusting screw, sealing filler fills valve gap upper portion makes progress the open -ended annular with valve rod combination department in, press the cover suit on the valve rod, the flange on its upper portion passes through adjusting screw to be connected at the valve gap up end, and the lower part axle head supports presses in the sealing filler upper end, the further improvement lies in: sealing filler is the V -arrangement sealing washer, be equipped with the copper sealing ring on the seal face of flashboard both sides respectively, left side valve channel right -hand member, right valve channel left end are equipped with the disk seat respectively, be equipped with wear -resisting metal coating on the seal face that disk seat and copper sealing ring combine. The utility model discloses can pass through the leakproofness of regulation guarantee valve gap and valve rod combination department, it is high pressure resistant, high temperature resistant, wear -resisting, corrosion -resistant.
Description
Technical field
This utility model relates to a kind of valve, particularly to a kind of gate valve.
Background technology
Gate valve includes valve body, valve rod, valve gap and flashboard, and valve body is provided with left valve channel, right valve channel, and valve gap is arranged at valve body upper end, and flashboard is in valve body between left valve channel, right valve channel, and valve rod extends upward through valve gap, and lower end is connected with flashboard. In order to prevent fluid media (medium) in left valve channel, right valve channel from valve gap and the leakage of valve rod junction, to be provided with shaft seal structure in valve gap and valve rod junction. Existing gate valve cover and valve rod junction shaft seal structure are fixed sealing, can not regulate, therefore, after in shaft seal structure, the fit clearance of sealing ring and valve rod incrementally increased along with the use time, sealing herein it cannot be guaranteed that, easily cause the leakage of gate valve so that gate valve can not bear bigger pressure.
Summary of the invention
This utility model is for the deficiencies in the prior art, it is proposed to a kind of energy is by the sealing of regulating guarantee valve gap with valve rod junction so that gate valve can bear the novel high pressure-resistant high temperature cut-off valve of elevated pressures.
This utility model is achieved through the following technical solutions technical goal.
Novel high pressure-resistant high temperature cut-off valve, including valve body, valve rod, valve gap and flashboard; Described valve body is provided with left valve channel, right valve channel; Described valve gap is arranged at valve body upper end, and flashboard is in valve body between left valve channel, right valve channel; Described valve rod extends upward through valve gap, and lower end is connected with flashboard; It thes improvement is that: described valve gap top and valve rod junction are provided with adjustable shaft seal structure; Described adjustable shaft seal structure includes gland, airtight and watertight padding, adjustment screw; Described airtight and watertight padding is filled in the annular groove of valve gap top and valve rod junction upward opening; Described gland is sleeved on valve rod, and the flange on its top is connected to valve gap upper surface by regulating screw, and lower axial end is pressed on airtight and watertight padding upper end.
In said structure, described airtight and watertight padding is v-ring; Described airtight and watertight padding V-arrangement is opening down or upward.
In said structure, described flashboard both sides sealing end face is respectively equipped with copper sealing ring; Described copper sealing ring is welded to connect on flashboard both sides sealing end face.
In said structure, described left valve channel right-hand member, right valve channel left end are respectively equipped with valve seat; The seal face that described valve seat is combined with copper sealing ring is provided with antifriction metal (AFM) coating.
This utility model compared with prior art, has the positive effect that:
1. valve gap top and valve rod junction are provided with adjustable shaft seal structure, airtight and watertight padding and valve rod can be kept to remain close sealing state by adjustment so that this utility model can bear elevated pressures.
2. airtight and watertight padding is v-ring, and airtight and watertight padding V-arrangement is opening down or upward, after airtight and watertight padding stress, airtight and watertight padding and valve rod are more in close contact, and improve the reliability on valve gap top and valve rod junction further, and voltage endurance capability is higher.
3. flashboard both sides sealing end face is respectively equipped with copper sealing ring, copper sealing ring is welded to connect on flashboard both sides sealing end face, this utility model utilizes the flashboard that two annular sealing surfaces are constituted, it is wedged in the valve cavity that two annular sealing surfaces are constituted, rely on flashboard to contact friction with two faces of valve body, reach certain seal pressure and realize sealing function, zero leakage can be reached, can be used for the operating mode of High Temperature High Pressure, sealing effectiveness is reliable.
4. left valve channel right-hand member, right valve channel left end are respectively equipped with valve seat, valve plate can be avoided directly to be combined with valve body on the one hand, and rub valve body; On the other hand, adjustment is also more convenient.
5. the seal face that valve seat is combined with copper sealing ring is provided with antifriction metal (AFM) coating, and sealing pair coefficient of friction is little, and sealing surface is wear-resisting, corrosion-resistant, long service life.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
Fig. 2 is I enlarged schematic partial view in Fig. 1.
Detailed description of the invention
Below according to accompanying drawing and the utility model is described in further detail in conjunction with the embodiments.
Novel high pressure-resistant high temperature cut-off valve shown in the drawings, including valve body 2, valve rod 1, valve gap 3 and flashboard 4; Valve body 2 is provided with left valve channel 2.1, right valve channel 2.2, and left valve channel 2.1 right-hand member, right valve channel 2.2 left end are respectively equipped with valve seat 7; Valve gap 3 is arranged at valve body 2 upper end, and flashboard 4 is in valve body 2 between left valve channel 2.1, right valve channel 2.2; Valve rod 1 extends upward through valve gap 3, and lower end is connected with flashboard 4; Flashboard 4 both sides sealing end face is respectively equipped with copper sealing ring 5; Copper sealing ring 5 is welded to connect on flashboard 4 both sides sealing end face, and the seal face that valve seat 7 is combined with copper sealing ring 5 is provided with antifriction metal (AFM) coating 7.1.
Valve gap 3 top and valve rod 1 junction are provided with adjustable shaft seal structure 6; Adjustable shaft seal structure 6 includes gland 6.2, airtight and watertight padding 6.1, regulates screw 6.3, and in the present embodiment, airtight and watertight padding 6.1 is v-ring; Airtight and watertight padding 6.1 is filled in the annular groove of valve gap 3 top and valve rod 1 junction upward opening, airtight and watertight padding 6.1V shape opening down (in other embodiments, airtight and watertight padding 6.1V shape opening also can be upward); Gland 6.2 is sleeved on valve rod 1, and the flange on its top is connected to valve gap 3 upper surface by regulating screw 6.3, and lower axial end is pressed on airtight and watertight padding 6.1 upper end.
Claims (4)
1. a novel high pressure-resistant high temperature cut-off valve, including valve body (2), valve rod (1), valve gap (3) and flashboard (4); Described valve body (2) is provided with left valve channel (2.1), right valve channel (2.2); Described valve gap (3) is arranged at valve body (2) upper end, and flashboard (4) is positioned between valve body (2) left valve channel (2.1), right valve channel (2.2); Described valve rod (1) extends upward through valve gap (3), and lower end is connected with flashboard (4); It is characterized in that: described valve gap (3) top and valve rod (1) junction are provided with adjustable shaft seal structure (6); Described adjustable shaft seal structure (6) includes gland (6.2), airtight and watertight padding (6.1), regulates screw (6.3); Described airtight and watertight padding (6.1) is filled in the annular groove of valve gap (3) top and valve rod (1) junction upward opening; Described gland (6.2) is sleeved on valve rod (1), and the flange on its top is connected to valve gap (3) upper surface by regulating screw (6.3), and lower axial end is pressed on airtight and watertight padding (6.1) upper end.
2. novel high pressure-resistant high temperature cut-off valve according to claim 1, it is characterised in that: described airtight and watertight padding (6.1) is v-ring; Described airtight and watertight padding (6.1) V-arrangement is opening down or upward.
3. novel high pressure-resistant high temperature cut-off valve according to claim 1 and 2, it is characterised in that: described flashboard (4) both sides sealing end face is respectively equipped with copper sealing ring (5); Described copper sealing ring (5) is welded to connect on flashboard (4) both sides sealing end face.
4. novel high pressure-resistant high temperature cut-off valve according to claim 3, it is characterised in that: described left valve channel (2.1) right-hand member, right valve channel (2.2) left end are respectively equipped with valve seat (7); The seal face that described valve seat (7) and copper sealing ring (5) combine is provided with antifriction metal (AFM) coating (7.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521119970.XU CN205278423U (en) | 2015-12-30 | 2015-12-30 | Novel gate valve of nai high pressure and high temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521119970.XU CN205278423U (en) | 2015-12-30 | 2015-12-30 | Novel gate valve of nai high pressure and high temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205278423U true CN205278423U (en) | 2016-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521119970.XU Active CN205278423U (en) | 2015-12-30 | 2015-12-30 | Novel gate valve of nai high pressure and high temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205278423U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931179A (en) * | 2015-12-30 | 2017-07-07 | 江苏海达船用阀业有限公司 | Novel high pressure-resistant high temperature cut-off valve |
| CN113324056A (en) * | 2021-07-06 | 2021-08-31 | 福建省开诚机械有限公司 | High-temperature and high-pressure resistant WCB valve steel casting |
-
2015
- 2015-12-30 CN CN201521119970.XU patent/CN205278423U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931179A (en) * | 2015-12-30 | 2017-07-07 | 江苏海达船用阀业有限公司 | Novel high pressure-resistant high temperature cut-off valve |
| CN113324056A (en) * | 2021-07-06 | 2021-08-31 | 福建省开诚机械有限公司 | High-temperature and high-pressure resistant WCB valve steel casting |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |