CN201588957U - Knife gate plate sealing device of knife gate valve - Google Patents
Knife gate plate sealing device of knife gate valve Download PDFInfo
- Publication number
- CN201588957U CN201588957U CN2009202666596U CN200920266659U CN201588957U CN 201588957 U CN201588957 U CN 201588957U CN 2009202666596 U CN2009202666596 U CN 2009202666596U CN 200920266659 U CN200920266659 U CN 200920266659U CN 201588957 U CN201588957 U CN 201588957U
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- Prior art keywords
- annular groove
- plug
- strip plate
- bearing
- ring
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- Expired - Fee Related
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Abstract
The utility model relates to a knife gate plate sealing device of a knife gate valve. The knife gate valve comprises a knife gate plate; the knife gate plate sealing device comprises a bearer, an elastic washer and a gland bush, wherein the bearer is installed in a base positioned inside the knife gate valve; the elastic washer is installed in the bearer; and the gland bush is installed at the top end of the bearer. The bearer comprises a major diameter ring groove, a pitch diameter ring groove and a first feed port. The elastic washer comprises a body positioned in the pitch diameter ring groove, and the body is provided with a sealing butting block. The gland bush comprises a second feed port, a compression ring, an inserting ring and a gas charging hole, wherein the second feed port is connected with the first feed port; the compression ring is arranged in the major diameter ring groove and is pressed on the elastic washer; and the inserting ring is arranged in the pitch diameter ring groove and is pressed on the butting block. When high pressure gas is pumped into the gas charging hole, the butting block can be in tight contact with the knife gate plate, so that knife gate plate sealing device can improve the sealing effect effectively.
Description
Technical field
The utility model relates to a kind of valve, particularly relates to a kind of plug-in strip plate seal arrangement of switch blade valve.
Background technique
As shown in Figure 1, existing switch blade valve 10 has a hollow base 11 that is provided with receiving hole 111, a support 12 that is installed on this pedestal 11, a cylinder pressure 13 that is installed on this support 12, a pan feeding ring 14 and a discharging ring 15 of being installed on this pedestal 11 respectively and being positioned at this receiving hole 111 and being in alignment with each other, piston rod that is installed on this cylinder pressure 13 131 and the plug-in strip plate 16 that can move in these pedestal 11 internal linear, and be installed on this pan feeding ring 14, this discharging ring 15 respectively and in the face of one first leakage stopping pad 17 and one second leakage stopping pad 18 of this plug-in strip plate 16.
This pan feeding ring 14 has a material entrance 141, and this discharging ring 15 has a discharge port 151.
When carrying out pan feeding (can be powder, plastochondria, fluid, gas), these piston rod 131 withdrawals make this plug-in strip plate 16 stagger and be opening state with this material entrance 141, this discharge port 151, desire to stop pan feeding, make this piston rod 131 stretch out and drive these plug-in strip plate 16 these material entrances 141 of sealing, this discharge port 151, touch this plug-in strip plate 16 through this first leakage stopping pad 17 with this second leakage stopping pad, 18 subsides simultaneously and produce sealing effect.
Though this switch blade valve 10 has above-mentioned function of use, but still there is following shortcoming:
In order to increase the abrasion resistance of this first leakage stopping pad 17 and this second leakage stopping pad 18, generally be with iron not dragon (Teflon) or metal make, because quality is harder, so and the sealing effect between this plug-in strip plate 16 is not good, in addition, after long-time the use, this first leakage stopping pad 17 still can produce loss because of normal and these plug-in strip plate 16 frictions with this second leakage stopping pad 18, causes having a strong impact on sealing effect and causes leakage.
The model utility content
The purpose of this utility model is can effectively improve sealing effect providing a kind of, prevents the plug-in strip plate seal arrangement of the switch blade valve revealed really.
The utility model plug-in strip plate seal arrangement is installed on a switch blade valve, this switch blade valve has the hollow base that an along continuous straight runs is put, a support that is installed on this pedestal, along continuous straight runs is installed on this support and has the cylinder pressure of a piston rod, a plug-in strip plate that is installed on this piston rod and can moves in this pedestal internal linear, a discharging ring that is installed on this pedestal and is positioned at receiving hole at the bottom of, and end leakage stopping pad that is installed on this discharging ring, this pedestal also has a top receiving hole of aiming at this end receiving hole, this discharging ring has a discharge port that vertically is provided with, this plug-in strip plate seal arrangement comprises a bearing, an elastic washer, and a gland, it is characterized in that:
This bearing is installed in the top receiving hole of this pedestal, comprise an end face and a bottom surface, one runs through the end face of this bearing and first material entrance of bottom surface, and end face from this bearing is provided with in regular turn towards this bottom surface and is arranged in a big footpath annular groove of this first material entrance outer shroud, a footpath annular groove, this big footpath annular groove with should in the footpath annular groove intersection and form one first shoulder ring.
This elastic washer comprises a body that is arranged in this footpath annular groove, and one from the moulding of the open end of this body and be positioned at the flange on this first shoulder ring top, and this body also has a sealing conflict piece.
This gland is installed in this bearing top, comprise an end face and a bottom surface, end face that runs through this gland and bottom surface also are connected second material entrance of this first material entrance, the pressure ring of a flange of putting this elastic washer towards the bottom moulding in order to the big footpath annular groove of inserting this bearing and pressure from this bottom surface, one from this pressure ring towards the bottom moulding in order to the middle footpath annular groove of inserting this bearing in and compress the slotting ring of the conflict piece of this elastic washer, and air-filled pore that is communicated with this pressure ring and this slotting ring.
The beneficial effects of the utility model are: when the piston rod withdrawal of this cylinder pressure, then this plug-in strip plate and this first material entrance, this discharge port stagger and are opening state, when the piston rod of this cylinder pressure stretches out, then this plug-in strip plate is between this first material entrance and this discharge port and be closed state, inject pressurized gas from this air-filled pore again, then can make this elastic washer distortion and this conflict piece is closely pasted and touch this plug-in strip plate, make whereby the utlity model has and effectively to improve sealing effect, prevent the characteristic of revealing really.
Description of drawings
Fig. 1 is the combination and the partial sectional view of existing switch blade valve;
Fig. 2 is the combination and the partial sectional view of the plug-in strip plate seal arrangement preferred embodiment of the utility model switch blade valve, illustrates to be in opening state;
Fig. 3 is a partial enlarged drawing of taking from Fig. 2, and a bearing, an elastic washer and a gland are described;
Fig. 4 is the view of similar Fig. 3, illustrates that the preferred embodiment is in closed state;
Fig. 5 is a partial enlarged drawing of taking from Fig. 4.
Embodiment
Below in conjunction with drawings and Examples the utility model is elaborated:
Before the utility model is described in detail, be noted that in the following description content, employed relative position term in the entire description, for example " substantially horizontal X ", " Vertical direction Y " are with orientation shown in each figure and normally use the orientation to be benchmark.
As Fig. 2, shown in 3, the utility model plug-in strip plate seal arrangement is in order to be installed on a switch blade valve 20, this switch blade valve 20 has a hollow base 21 of putting along this substantially horizontal X, a support 22 that is installed on this pedestal 21 along this substantially horizontal X, one is installed on this support 22 and has the cylinder pressure 23 of a piston rod 231 along this substantially horizontal X, piston rod that is installed on this cylinder pressure 23 231 and the plug-in strip plate 24 that can move in these pedestal 21 internal linear, a discharging ring 25 that is installed on this pedestal 21 and is positioned at receiving hole 211 at the bottom of, and an end leakage stopping pad 26 that is installed on this discharging ring 25.
This end leakage stopping pad 26 can with apical ring face 251 these apical ring faces 251 of concordant or local protrusion of this discharging ring 25.
This pedestal 21 has this end receiving hole 211 that is provided with along this Vertical direction Y respectively, and a stepped top receiving hole 212 of aiming at this end receiving hole 211.
This discharging ring 25 also has a discharge port 252 that is provided with along this Vertical direction Y.
The utility model plug-in strip plate seal arrangement the preferred embodiment comprises a bearing 30, an elastic washer 40, and a gland 50.
This bearing 30 generally is reversed convex type, be installed in the top receiving hole 212 of this pedestal 21, comprise an end face 31 and a bottom surface 32, one runs through this end face 31 with this bottom surface 32 and be funnelform first material entrance 33, and one is provided with in regular turn towards this bottom surface 32 and is arranged in a stepped big footpath annular groove of these first material entrance, 33 outer shrouds and cross section 34, footpath annular groove 35, a path annular groove 36 from this end face 31.
Should big footpath annular groove 34 with should in footpath annular groove 35 intersection and form one first shoulder ring 37, footpath annular groove 35 then forms one second shoulder ring 38 with the intersection of this path annular groove 36 in this.
This elastic washer 40 can rubber, silica gel, soft plastic are made, and possesses pliability, comprises the body 41 that a cross section generally takes the shape of the letter U, and one from the open end 411 of this body 41 flange 42 of moulding toward the outer side.
About of the assembling of this elastic washer 40 with this bearing 30, only need the body 41 of this elastic washer 40 is inserted in this in annular groove 35 of footpath, then this flange 42 just can be positioned at this first shoulder ring, 37 tops, and a sealing of this body 41 is pasted 412 of contact blocks and is positioned at this second shoulder ring, 38 tops.
This gland 50 is installed in these bearing 30 tops and the part is positioned at this top receiving hole 212, comprise an end face 51 and a bottom surface 52, funnel-like second material entrance 53 that runs through this end face 51 and this bottom surface 52 and be connected this first material entrance 33, one from this bottom surface 52 towards the pressure ring 54 of bottom moulding in order to the big footpath annular groove 34 of inserting this bearing 30, one from this pressure ring 54 towards the bottom moulding in order to the slotting ring 55 in the middle footpath annular groove 35 of inserting this bearing 30, and air-filled pore 56 that is communicated with this pressure ring 54 and this slotting ring 55.
The inlet of this air-filled pore 56 can be arranged on the side of this end face 51 or this gland 50.
When the slotting ring 55 with this gland 50 inserts in the middle footpath annular groove 35 of this bearing 30, then the body 41 of this elastic washer 40 is sandwiched between between this bearing 30 and this slotting ring 55, the bottom of this slotting ring 55 compresses the subsides contact block 412 of this body 41 simultaneously, and these pressure ring 54 pressures are put on this flange 42 tops.
During use, as Fig. 2, shown in 3, when carrying out the pan feeding operation, these piston rod 231 withdrawals are this plug-in strip plate 24 and this first material entrance 33 simultaneously, this discharge port 252 staggers, make this first material entrance 33 be opening state and can carry out the pan feeding operation with this discharge port 252, desire to stop pan feeding, as Fig. 4, shown in 5, make this piston rod 231 stretch out and drive this 24 sealings of plug-in strip plate this first material entrance 33 and this discharge port 252, then pressurized gas are injected from this air-filled pore 56, this body 41 is expanded and should paste that contact block 412 is pushed these path annular groove 36 extensions to and then this plug-in strip plate 24 is touched in subsides, can bestow the biasing force that this subsides contact block 412 moves towards this plug-in strip plate 24 all the time owing to be full of pressurized gas in this air-filled pore 56, adding this elastic washer 40 is soft attitude and has pliability, make the sealing effect between this subsides contact block 412 and this plug-in strip plate 24 splendid, to open this first material entrance 33 and this discharge port 252 once more, as Fig. 2, shown in 3, carrying out pressure release earlier flows out the pressurized gas in this air-filled pore 56, then this subsides contact block 412 automatically resets and breaks away from this plug-in strip plate 24, can make with that 231 withdrawals of this piston rod drive these plug-in strip plates 24 once more with this first material entrance 33, this discharge port 252 staggers.
The preferred embodiment also comprises a top leakage stopping pad 60 that is installed on this bearing 30, this top leakage stopping pad 60 can with 32 these bottom surfaces 32 of concordant or local protrusion, bottom surface of this bearing 30.
When this plug-in strip plate 24 was positioned at this closing position, this end leakage stopping pad 26 pasted simultaneously with this top leakage stopping pad 60 and touches this plug-in strip plate 24 generation sealing effects.
Conclude above-mentionedly, the utlity model has effect as described below and advantage:
One, the utility model touches these plug-in strip plate 24 generation sealing effects with these top leakage stopping pad 60 subsides except seeing through this end leakage stopping pad 26, the more important thing is that the subsides contact block 412 that can see through this elastic washer 40 is soft attitude and possesses pliability, add and to be pushed to this plug-in strip plate 24 by the pressurized gas in this air-filled pore 56, this subsides contact block 412 can closely be pasted touch this plug-in strip plate 24, and then can effectively improve sealing effect, prevent from really to leak.
Two, do not touch this plug-in strip plate 24 because do not paste during subsides contact block 412 normalities of this elastic washer 40, only when these plug-in strip plate 24 these first material entrances 33 of sealing, this discharge port 252, just produce the distortion subsides and touch this plug-in strip plate 24, so have the long effect and the advantage in working life of this elastic washer 40.
Claims (6)
1. the plug-in strip plate seal arrangement of a switch blade valve, described switch blade valve has the hollow base that an along continuous straight runs is put, a support that is installed on described pedestal, along continuous straight runs is installed on described support and has the cylinder pressure of a piston rod, a plug-in strip plate that is installed on described piston rod, one be installed on described pedestal and be positioned at of described pedestal at the bottom of the discharging ring of receiving hole, and end leakage stopping pad that is installed on described discharging ring, described pedestal has a top receiving hole of aiming at receiving hole of the described end, described discharging ring has a discharge port that vertically is provided with, described plug-in strip plate seal arrangement comprises a bearing, an elastic washer, and a gland, it is characterized in that:
Described bearing is installed in the top receiving hole of described pedestal, comprise an end face and a bottom surface, end face that runs through described bearing and bottom surface and aim at first material entrance of described discharge port, and end face from described bearing is provided with in regular turn towards described bottom surface and is arranged in a big footpath annular groove of the described first material entrance outer shroud, a footpath annular groove, described big footpath annular groove with described in the intersection of footpath annular groove also form one first shoulder and encircle;
Described elastic washer comprises a body that is arranged in described footpath annular groove, and one from the moulding of the open end of described body and be positioned at the flange on the described first shoulder ring top, and described body also has one and seals the conflict piece;
Described gland is installed in described bearing top, comprise an end face and a bottom surface, end face that runs through described gland and bottom surface also are connected second material entrance of described first material entrance, the pressure ring of a flange of putting described elastic washer towards the bottom moulding in order to the big footpath annular groove of inserting described bearing and pressure from described bottom surface, one from described pressure ring towards the bottom moulding in order to the middle footpath annular groove of inserting described bearing in and compress the slotting ring of the conflict piece of described elastic washer, and air-filled pore that is communicated with described pressure ring and described slotting ring.
2. the plug-in strip plate seal arrangement of switch blade valve according to claim 1 is characterized in that:
Described plug-in strip plate seal arrangement also comprises one and is installed in described bearing is touched described plug-in strip plate in order to subsides top leakage stopping pad.
3. the plug-in strip plate seal arrangement of switch blade valve according to claim 1 is characterized in that:
Described bearing also comprises a path annular groove that the footpath annular groove is provided with towards the bottom surface of described bearing in described, the intersection of described middle footpath annular groove and described path annular groove also forms one second shoulder ring, and the conflict piece of described elastic washer is positioned at described second shoulder and encircles the top.
4. the plug-in strip plate seal arrangement of switch blade valve according to claim 2 is characterized in that:
Described bearing also comprises a path annular groove that the footpath annular groove is provided with towards the bottom surface of described bearing in described, the intersection of described middle footpath annular groove and described path annular groove also forms one second shoulder ring, and the conflict piece of described elastic washer is positioned at described second shoulder and encircles the top.
5. the plug-in strip plate seal arrangement of switch blade valve according to claim 1 is characterized in that:
The top receiving hole of described pedestal is stepped, and described bearing is reversed convex type, and the part of described gland is positioned at described top receiving hole.
6. the plug-in strip plate seal arrangement of switch blade valve according to claim 2 is characterized in that:
The top receiving hole of described pedestal is stepped, and described bearing is reversed convex type, and the part of described gland is positioned at described top receiving hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202666596U CN201588957U (en) | 2009-12-11 | 2009-12-11 | Knife gate plate sealing device of knife gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202666596U CN201588957U (en) | 2009-12-11 | 2009-12-11 | Knife gate plate sealing device of knife gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201588957U true CN201588957U (en) | 2010-09-22 |
Family
ID=42748738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202666596U Expired - Fee Related CN201588957U (en) | 2009-12-11 | 2009-12-11 | Knife gate plate sealing device of knife gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201588957U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111550567A (en) * | 2019-02-12 | 2020-08-18 | 台湾控制阀股份有限公司 | Improved structure of knife valve |
-
2009
- 2009-12-11 CN CN2009202666596U patent/CN201588957U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111550567A (en) * | 2019-02-12 | 2020-08-18 | 台湾控制阀股份有限公司 | Improved structure of knife valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100922 Termination date: 20151211 |
|
| EXPY | Termination of patent right or utility model |