CN208519188U - A kind of novel cutoff valve - Google Patents
A kind of novel cutoff valve Download PDFInfo
- Publication number
- CN208519188U CN208519188U CN201821211173.8U CN201821211173U CN208519188U CN 208519188 U CN208519188 U CN 208519188U CN 201821211173 U CN201821211173 U CN 201821211173U CN 208519188 U CN208519188 U CN 208519188U
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- CN
- China
- Prior art keywords
- valve
- deck
- fluid
- rod
- spool
- 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 - Fee Related
Links
- 239000012530 fluid Substances 0.000 claims abstract description 72
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 230000000694 effects Effects 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000004888 barrier function Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model discloses a kind of novel cutoff valves, belong to valve technology field, offers the valve body of fluid channel, the valve deck connecting with valve body screw thread, one end including inside and wear the valve rod into fluid channel from valve deck screw thread and be connected to valve rod in the flap of fluid channel one end；The valve body is provided with valve seat in the fluid passage, and the fluid port closed by valve clack cover is provided on valve seat；The stem nut being threadedly coupled with valve deck is fixedly connected on the valve rod.The utility model reduces a possibility that fluid continues leakage outward along the gap between valve rod and valve deck, to improve the sealing performance of shut-off valve, while having good effect of shutting off.
Description
Technical field
The utility model belongs to valve technology field, in particular to a kind of novel cutoff valve.
Background technique
Shut-off valve is also known as pipe valve valve, belongs to forced seal formula valve.Currently, shut-off valve in the market, referring to Fig. 1, including
The valve body 1, the valve deck 2 connecting with valve body 1, one end that inside offers fluid channel 11 are worn from valve deck 2 into fluid channel 11
Valve rod 3 and be connected to valve rod 3 in the flap 4 of 11 one end of fluid channel, valve body 1 is provided with valve seat in fluid channel 11
13, fluid port 131 is offered on valve seat 13, drives flap 4 to abut with the movable of valve seat 13 by valve rod 3, to realize fluid
The closure or unlatching of port 131, so that the flow to fluid is adjusted.
Above-mentioned shut-off valve in the long-term use, can generate certain abrasion, fluid channel between valve rod 3 and valve deck 2
Fluid in 11 can flow outwardly valve body 1 along the gap between valve rod 3 and valve deck 2, and then fluid is caused to leak, and influence to end
The leakproofness of valve.
Utility model content
The purpose of the utility model is to provide a kind of novel cutoff valves, and which solve existing shut-off valves to be easy to happen leakage
The problem of, improve the leakproofness of shut-off valve.
The above-mentioned technical purpose of the utility model has the technical scheme that
A kind of novel cutoff valve offers the valve body of fluid channel, the valve deck connecting with valve body screw thread, one end including inside
The valve rod into fluid channel is worn from valve deck screw thread and is connected to valve rod in the flap of fluid channel one end；The valve body exists
It is provided with valve seat in fluid channel, the fluid port closed by valve clack cover is provided on valve seat；Be fixedly connected on the valve rod with
The stem nut that valve deck is threadedly coupled.
Using the above scheme, rotary valve rod, so that flap is separated with valve seat, shut-off valve is in open state, and fluid is from fluid
One side ports in channel enter in valve body, are circulated another side ports in channel by the fluid port of valve seat；Simultaneously with this,
The mode that valve rod is threadedly coupled with valve deck has good sealing effect, forms first of sealing barrier of shut-off valve；On valve rod
The stem nut being threadedly coupled with valve deck is set so that the sealing surface of valve rod and valve deck exist at valve deck it is disconnected cut, reduce fluid along
A possibility that leakage outward, is continued in gap between valve rod and valve deck, forms second in stem nut and valve deck threaded connection place with this
Sealing barrier, so that shut-off valve has good sealing effect.
Further preferably are as follows: the junction and valve rod of the stem nut and valve deck and the junction interval of valve deck are arranged, and valve
A cavity is formed between female, valve deck and valve rod.
Using the above scheme, cavity can be kept in from the fluid of valve rod and the clearance leakage of valve deck, with non-leaking
Fluid leaked in gap directly between stem nut and valve deck；In addition, air pressure usually guarantees stable state in cavity, if having
Fluid leaks out in cavity, then the pressure in cavity can be made to be slightly above fluid channel, reduces a possibility that fluid constantly leaks,
To increase the sealing effect of shut-off valve.
Further preferably are as follows: be provided with sealing ring between the valve body and valve deck, offered on the valve body for described close
The mounting groove of seal ring insertion.
Using the above scheme, sealing ring installation can increase the sealing effect between valve body and valve deck, subtract with mounting groove
Few fluid is leaked when circulating in fluid channel along the gap between valve body and valve deck outward, to guarantee that shut-off valve is good
Sealing effect.
Further preferably are as follows: cricoid positioning flange is provided on the valve body, the valve deck is threadedly connected to positioning and turns over
On the inner wall on side, the sealing ring is clamped between positioning flange and valve deck.
Using the above scheme, valve deck is threadedly connected on the inner wall of positioning flange, so that sealing ring is located at valve deck and determines
The outside that position flange is threadedly coupled first is arrived at the two screw thread when being leaked with this fluid, reduces corruption of the fluid to sealing ring
Erosion.
Further preferably are as follows: the flap includes the spool connecting with the valve rod and the limit that is fixed on spool outer peripheral surface
Position ring, the spool are threaded onto the fluid port by valve handle activity, and the stop collar is covered on the valve seat in fluid
The outside of port.
Using the above scheme, spool is threaded onto fluid passage port, is covered on valve seat by stop collar to realize that fluid is logical
Mouthful closure, relative to the outside being entirely embedded in spool in fluid port or directly by cartridge cover together in fluid port,
With good shut off effect and structural stability.
Further preferably are as follows: the side of the stop collar towards the fluid port is provided with gasket ring, and gasket
Ring is clamped between stop collar and the valve seat.
Using the above scheme, gasket ring can seal the gap between stop collar and valve seat, better convection current
Body port is closed, to increase shut-off valve when closed to the rejection effect of fluid.
Further preferably are as follows: the spool is provided with position-arresting disk, the gasket ring position in the side far from the valve rod
Between position-arresting disk and stop collar.
Using the above scheme, position-arresting disk can play position-limiting action to gasket ring, increase gasket ring and be installed on flap
Structural stability when upper, so that gasket ring preferably seals the gap between stop collar and valve seat.
Further preferably are as follows: the outer peripheral surface of the position-arresting disk is provided with guiding surface in the side far from the spool.
Using the above scheme, the setting of guiding surface facilitates position-arresting disk quickly to penetrate in fluid port, reduces position-arresting disk and exists
A possibility that stress of outer peripheral surface edge is concentrated, and position-arresting disk damage is reduced.
In conclusion the utility model has the following beneficial effects:
1, valve rod is threadedly coupled first of the sealing barrier to form shut-off valve with valve deck in the utility model, and stem nut with
Valve deck threaded connection place forms second sealing barrier, so that the sealing surface of valve rod and valve deck has disconnected section at valve deck, reduces
A possibility that fluid continues leakage outward along the gap between valve rod and valve deck, to improve the sealing performance of shut-off valve；
2, the utility model passes through sealing ring, mounting groove.The setting of flange is positioned, corrosion of the fluid to sealing ring is reduced,
Fluid is reduced simultaneously to leak outward when circulating in fluid channel along the gap between valve body and valve deck, increases the close of shut-off valve
Seal effect；
3, the utility model passes through the setting of spool, stop collar, gasket ring, position-arresting disk, can be to stop collar and valve seat
Between gap sealed, preferably fluid port is closed, fluid is cut when closed to increase shut-off valve
Stay effect.
Detailed description of the invention
Fig. 1 is the schematic diagram of internal structure of existing shut-off valve；
Fig. 2 is the structural schematic diagram of the utility model；
Fig. 3 is the schematic diagram of internal structure of the utility model.
In figure, 1, valve body；2, valve deck；3, valve rod；4, flap；5, handwheel；6, sealing ring；7, stem nut；8, cavity；9, it seals
Gasket ring；11, fluid channel；111, inlet；112, liquid outlet；12, flange is positioned；121, mounting groove；13, valve seat；131, it flows
Body port；41, spool；42, stop collar；43, position-arresting disk；431, guiding surface.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
It should be noted that word used in the utility model " transverse direction ", " longitudinal direction ", " top ", " bottom " are attached
Direction in figure.
A kind of novel cutoff valve, referring to figs. 2 and 3, including valve body 1, valve deck 2, valve rod 3, flap 4 and handwheel 5, it solves
The problem of existing shut-off valve is easy to happen leakage.
Wherein, the inner transverse of valve body 1 offers a fluid channel 11, and the top of valve body 1 is provided with one and fluid
The positioning flange 12 that channel 11 is connected to, valve body 1 are provided with a valve seat 13 in the lower section of positioning flange 12, with this by fluid channel
11 are divided into inlet 111 and liquid outlet 112.Valve seat 13 is offering a fluid port 131 towards the side of positioning flange 12,
Being connected to for inlet 111 and liquid outlet 112 is realized with this.
Valve deck 2 is threadedly connected on the inner wall of positioning flange 12, and is additionally provided with one between valve deck 2 and positioning flange 12
Sealing ring 6, the top of positioning flange 12 offer a mounting groove 121, and sealing ring 6 is embedded in installation and is clamped to valve deck
2 and positioning flange 12 top, the leakproofness between valve deck 2 and valve body 1 is increased with this.
The bottom end of valve rod 3 wears into fluid channel 11 from 2 screw thread of valve deck and is wholely set with flap 4, the top of valve rod 3
It is piercing in valve deck 2 and is fixedly connected with handwheel 5, valve rod 3 is also fixedly connected with one in the lower section of handwheel 5 and connects with 2 screw thread of valve deck
The stem nut 7 connect.Wherein, the junction and valve rod 3 of stem nut 7 and valve deck 2 and the junction interval of valve deck 2 are arranged, and stem nut 7, valve
It is formed with a cavity 8 between lid 2 and valve rod 3, the leakproofness between valve rod 3 and valve deck 2 is increased with this.
Flap 4 includes the spool 41 connecting with valve rod 3 and the stop collar 42 that is fixed on 41 outer peripheral surface of spool, and spool 41 is logical
It crosses 3 activity of valve rod to be threaded onto fluid port 131, stop collar 42 is covered on valve seat 13 at the top of fluid port 131, hinders with this
Only spool 41 excessively penetrates in fluid port 131.The side of stop collar 42 towards fluid port 131 is additionally provided with a gasket
Ring 9, gasket ring 9 are sheathed on the outside of spool 41 and are clamped between stop collar 42 and valve seat 13, with this to 42 He of stop collar
Gap between valve seat 13 is sealed.
Spool 41 is being wholely set position-arresting disk 43 far from the side of valve rod 3 so that gasket ring 9 be located at position-arresting disk 43 and
Between stop collar 42, to increase stability when gasket ring 9 is installed on flap 4.The outer peripheral surface of position-arresting disk 43 is separate
The side of spool 41 is additionally provided with a guiding surface 431, is quickly arranged at fluid port 131 with this convenient for position-arresting disk 43.
The course of work:
Valve rod 3 is rotated by handwheel 5, so that flap 4 is separated with valve seat 13 upwards, spool 41 is located at fluid port
131 top, shut-off valve is in open state, and fluid flows to liquid outlet from inlet 111 by the fluid port 131 of valve seat 13
112；Simultaneously with this, valve rod 3 is threadedly coupled with valve deck 2 forms first of sealing barrier, and stem nut 7 is threadedly coupled formation with valve deck 2
Second sealing barrier, to increase the sealing effect of shut-off valve.Handwheel 5 is reversely rotated, so that flap 4 is covered on downwards valve seat
13 fluid port 131, gasket ring 9 seal the gap of stop collar 42 and valve seat 13, realize cutting for shut-off valve with this
Stream.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (8)
1. a kind of novel cutoff valve, which is characterized in that offer valve body (1) and valve body (1) of fluid channel (11) including inside
The valve deck (2) of threaded connection, one end wear the valve rod (3) into fluid channel (11) from valve deck (2) screw thread and are connected to valve
Flap (4) of the bar (3) in fluid channel (11) one end；The valve body (1) is provided with valve seat (13), valve in fluid channel (11)
The fluid port (131) closed by flap (4) lid is provided on seat (13)；It is fixedly connected on the valve rod (3) and valve deck (2) spiral shell
The stem nut (7) of line connection.
2. a kind of novel cutoff valve according to claim 1, which is characterized in that the connection of the stem nut (7) and valve deck (2)
The junction interval of place and valve rod (3) and valve deck (2) is arranged, and is formed with one between stem nut (7), valve deck (2) and valve rod (3)
A cavity (8).
3. a kind of novel cutoff valve according to claim 1, which is characterized in that set between the valve body (1) and valve deck (2)
It is equipped with sealing ring (6), the mounting groove (121) for the sealing ring (6) insertion is offered on the valve body (1).
4. a kind of novel cutoff valve according to claim 3, which is characterized in that be provided on the valve body (1) cricoid
It positions flange (12), the valve deck (2) is threadedly connected on the inner wall of positioning flange (12), and the sealing ring (6) is clamped in fixed
Between position flange (12) and valve deck (2).
5. a kind of novel cutoff valve according to claim 1, which is characterized in that the flap (4) includes and the valve rod
(3) spool (41) connected and the stop collar (42) being fixed on spool (41) outer peripheral surface, the spool (41) pass through valve rod (3)
Activity is threaded onto the fluid port (131), and the stop collar (42) is covered on the valve seat (13) in fluid port (131)
Outside.
6. a kind of novel cutoff valve according to claim 5, which is characterized in that the stop collar (42) is towards the fluid
The side of port (131) is provided with gasket ring (9), and gasket ring (9) is clamped in stop collar (42) and the valve seat (13)
Between.
7. a kind of novel cutoff valve according to claim 6, which is characterized in that the spool (41) is far from the valve rod
(3) side is provided with position-arresting disk (43), and the gasket ring (9) is located between position-arresting disk (43) and stop collar (42).
8. a kind of novel cutoff valve according to claim 7, which is characterized in that the outer peripheral surface of the position-arresting disk (43) is remote
Side from the spool (41) is provided with guiding surface (431).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821211173.8U CN208519188U (en) | 2018-07-27 | 2018-07-27 | A kind of novel cutoff valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821211173.8U CN208519188U (en) | 2018-07-27 | 2018-07-27 | A kind of novel cutoff valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208519188U true CN208519188U (en) | 2019-02-19 |
Family
ID=65333888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821211173.8U Expired - Fee Related CN208519188U (en) | 2018-07-27 | 2018-07-27 | A kind of novel cutoff valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208519188U (en) |
-
2018
- 2018-07-27 CN CN201821211173.8U patent/CN208519188U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190219 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |