CN202708144U - Flat gate valve - Google Patents
Flat gate valve Download PDFInfo
- Publication number
- CN202708144U CN202708144U CN201220419662.9U CN201220419662U CN202708144U CN 202708144 U CN202708144 U CN 202708144U CN 201220419662 U CN201220419662 U CN 201220419662U CN 202708144 U CN202708144 U CN 202708144U
- Authority
- CN
- China
- Prior art keywords
- valve
- flashboard
- rubber seal
- seal
- rptfe
- 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 - Lifetime
Links
- -1 poly tetra fluoroethylene Polymers 0.000 abstract 1
- 229940058401 polytetrafluoroethylene Drugs 0.000 abstract 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract 1
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000003389 potentiating effect Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- PICXIOQBANWBIZ-UHFFFAOYSA-N zinc;1-oxidopyridine-2-thione Chemical class [Zn+2].[O-]N1C=CC=CC1=S.[O-]N1C=CC=CC1=S PICXIOQBANWBIZ-UHFFFAOYSA-N 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model relates to a valve, in particular to a flat gate valve. The flat gate valve comprises a valve body, a gate plate, a valve rod, valve seats, a valve cover and a hand wheel. The upper end of the valve body is fixedly connected with the valve cover, the upper end of the gate plate is connected with the valve rod, and the upper end of the valve rod is connected with the hand wheel. Valve seats are arranged on the left side and the right side of the gate plate to be tightly attached the gate plate, and the valve seats are provided with springs, O-shaped rings, reinforced poly tetra fluoroethylene (RPTFE) insert rings and rubber seal rings. The springs and the O-shaped rings are arranged at the positions where the valve seats are attached to the valve body, and the RPTFE insert rings and the rubber seal rings are arranged at the positions where the valve seats are attached to the gate plate. The flat gate valve successfully achieves inlet low pressure seal and outlet high pressure seal, is small in specific pressure and long in service life, and ensures strong seal performance.
Description
Technical field
The utility model relates to a kind of valve, specifically a kind of plate valve.
Background technique
Plate valve is widely used at oil, rock gas, chemical field, has been a kind of standardised generic product.But modern high technology engine request valve reaches: the one, and entrance point (valve downstream end) high and low pressure is the energy reliable sealing all, guarantees medium is dammed at the valve downstream end, makes valve more safe and reliable.The 2nd, stressed as far as possible little on the outlet end valve seat unit area, make valve longer service life durable in use.That can realize in the ordinary flat gate valve does not but have, especially large caliber flat plate gate valve.So major part is outlet (valve downstream end) sealing.Lack, do not meet the high technology standard working life.Must reach the entrance point low pressure seal as before, only has the valve sleeve of increasing external diameter, increase entrance point medium impetus power, but active force has strengthened, because flashboard is the power permissible compression stress of material head and shoulders above on the sealing surface unit area of the outlet end that floats, can cause very quick-wearing of exit seal, valve is not durable.Here it is, and plate valve is difficult to accomplish the entrance point low pressure seal, and the outlet end seal pressure is little, the difficult problem of superpressure not.
The model utility content
For the problems referred to above, the utility model provides a kind of plate valve, realizes that successfully import low pressure seal, outlet end high pressure sealing and specific pressure are little, and long service life guarantees potent sealability.
The utility model is achieved through the following technical solutions: a kind of plate valve, comprise valve body, flashboard, valve rod, valve seat, valve gap, handwheel, described valve body upper end connects valve gap and is fixedly connected with, the upper end of described flashboard connects valve rod, described valve rod upper end connects handwheel, the left side of described flashboard, right both sides have valve seat to fit tightly with it, on the described valve seat spring is set, O shape circle, RPTFE inlays circle, rubber seal, described spring, O shape circle is arranged on valve seat and valve body joint place, described RPTFE edge circle, rubber seal is arranged on valve seat and flashboard joint place.
As preferably, described rubber seal arranges the medium accumulator tank, and described medium accumulator tank is arranged on a side of rubber seal applying flashboard.
As preferably, between described valve rod and the valve gap upper seal support is set, described upper seal support arranges O shape circle in a side that connects valve gap.
As preferably, described valve gap upper end connection bracket, described valve rod passes the middle cavity of described support.
The utility model has taked above-mentioned corrective measure to carry out, its beneficial effect is remarkable: the utility model is mainly with the shape of rubber seal and the matching design of medium accumulator tank, formation entrance point low pressure reliable sealing, outlet end pressure-bearing unit area can double, decrease outlet end seal pressure, life-saving is opened torque and is reduced by 1/3 more than 3 times.
Description of drawings
Fig. 1 is the utility model embodiment 1 structural representation;
Fig. 2 is the structural representation of the utility model embodiment 1 valve seat part.
1 is valve body among the figure, the 2nd, and flashboard, the 3rd, valve seat, the 4th, valve rod, the 5th, valve gap, the 6th, support, the 7th, handwheel, the 8th, spring, the 9th, O shape circle, the 10th, RPTFE inlays circle, and the 11st, rubber seal, the 12nd, medium accumulator tank, the 13rd, valve pocket.
Embodiment
The below's contrast accompanying drawing is further described the utility model in conjunction with the embodiments:
With reference to Fig. 1, shown in Figure 2, a kind of plate valve among the embodiment 1, comprise valve body 1, flashboard 2, valve rod 4, valve seat 3, valve gap 5, handwheel 7, valve body 1 upper end connects valve gap 5 and is fixedly connected with, valve gap 5 upper end connection brackets 6, flashboard 2, valve rod 4, valve seat 3 run through the inside (for known technology) of valve body 1 and valve gap 5, between valve rod 4 and the valve gap 5 upper seal support is set, described upper seal support arranges O shape circle 9 in a side that connects valve gap 5, the upper end of flashboard 2 connects valve rod 4, valve rod 4 passes the middle cavity of support 6, and valve rod 4 upper ends connect handwheel 7.The arranged on left and right sides of flashboard 2 has valve seat 3 to fit tightly with it, spring 8, O shape circle 9, RPTFE edge circle, rubber seal 11 are set on the valve seat 3, spring 8, O shape circle 9 are arranged on valve seat 3 and valve body 1 joint place, and RPTFE edge circle, rubber seal 11 are arranged on valve seat 3 and flashboard 2 joint places.Rubber seal 11 arranges medium accumulator tank 12, and described medium accumulator tank 12 is arranged on a side of rubber seal 11 applying flashboards 2.
Working principle: when flowing medium enters from valve pocket 13 1 ends, rubber seal and flashboard are coincide, the low pressure pressure medium is come in, further make valve seat push flashboard to, pressure medium enters the medium accumulator tank simultaneously, this moment, rubber seal strengthened sealability gradually, and rubber seal produces selfsealings, realizes reliable low pressure seal.Strengthen with pressure medium, flashboard continues to move towards entrance point, and rubber seal continues distortion, and RPTFE edge circle is combined with flashboard, and high pressure bears pressure by RPTFE edge circle, guarantees reliable sealing.The outlet end valve seat is because high-pressure medium pressure enters the medium accumulator tank simultaneously, form planar flow bluk recombination elastic packing with pressure rise it and rubber seal, RPTFE edge circle, make the sealing surface bearing area increase more than 2 times, significantly lower accepting of unit area on the outlet end sealing surface, can guarantee the sealing effect that outlet end is tight again.
What more than enumerate only is specific embodiment of the utility model, and obviously, the utility model is not limited to above embodiment.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model all should belong to protection domain of the present utility model.
Claims (5)
1. plate valve, comprise valve body, flashboard, valve rod, valve seat, valve gap, handwheel, described valve body upper end connects valve gap and is fixedly connected with, the upper end of described flashboard connects valve rod, described valve rod upper end connects handwheel, the arranged on left and right sides of described flashboard has valve seat to fit tightly with it, it is characterized in that, spring, O shape circle, RPTFE edge circle, rubber seal are set on the described valve seat, described spring, O shape circle are arranged on valve seat and valve body joint place, and described RPTFE edge circle, rubber seal are arranged on valve seat and flashboard joint place.
2. plate valve according to claim 1 is characterized in that, described rubber seal arranges the medium accumulator tank, and described medium accumulator tank is arranged on a side of rubber seal applying flashboard.
3. plate valve according to claim 1 is characterized in that, between described valve rod and the valve gap upper seal support is set.
4. plate valve according to claim 3 is characterized in that, described upper seal support arranges O shape circle in a side that connects valve gap.
5. plate valve according to claim 1 is characterized in that, described valve gap upper end connection bracket, and described valve rod passes the middle cavity of described support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220419662.9U CN202708144U (en) | 2012-08-23 | 2012-08-23 | Flat gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220419662.9U CN202708144U (en) | 2012-08-23 | 2012-08-23 | Flat gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202708144U true CN202708144U (en) | 2013-01-30 |
Family
ID=47588450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220419662.9U Expired - Lifetime CN202708144U (en) | 2012-08-23 | 2012-08-23 | Flat gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202708144U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117307740A (en) * | 2023-11-03 | 2023-12-29 | 中阀控股（集团）有限公司 | Soft seal gate valve with elastic sealing function |
-
2012
- 2012-08-23 CN CN201220419662.9U patent/CN202708144U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117307740A (en) * | 2023-11-03 | 2023-12-29 | 中阀控股（集团）有限公司 | Soft seal gate valve with elastic sealing function |
| CN117307740B (en) * | 2023-11-03 | 2024-11-15 | 中阀控股（集团）有限公司 | Soft seal gate valve with elastic sealing function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |