CN203963118U - Hand valve - Google Patents
Hand valve Download PDFInfo
- Publication number
- CN203963118U CN203963118U CN201420412604.2U CN201420412604U CN203963118U CN 203963118 U CN203963118 U CN 203963118U CN 201420412604 U CN201420412604 U CN 201420412604U CN 203963118 U CN203963118 U CN 203963118U
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- CN
- China
- Prior art keywords
- valve
- cavity
- rod
- pilot pressure
- described valve
- 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
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- Lift Valve (AREA)
Abstract
The utility model is a kind of hand valve, comprise have valve-rod cavity valve body, seal described valve body front end and there is the valve gap of the first cavity, through the valve rod in described valve-rod cavity and described the first cavity and seal the pedestal of described valve rear end, described valve body also has and is communicated with respectively described valve-rod cavity to extraneous import, bleed outlet and outlet, and described pedestal inside is provided with and is communicated with described valve body chamber and extraneous pilot pressure hole.The utility model by arranging guide's positioning hole in pedestal, can resilience in the situation that of making valve rod there is pilot pressure in pedestal and guarantee valve opening, only have when pilot pressure is lost and just understand throttle down, realized by the function of pilot pressure autocontrol valve gate switch.
Description
[technical field]
The utility model relates to a kind of controlling component for pipeline fluid transporting system, relates to more specifically a kind of hand valve.
[background technique]
Hand valve is controlling component in pipeline fluid transporting system, and it is for changing path section and media flow direction, has the functions such as water conservancy diversion, cut-off, adjusting, throttling, non-return, shunting or overflow release.Valve can be under the effect of pressure, temperature or other form transducing signal, by pre-provisioning request action, or do not rely on transducing signal and simply open or close, valve relies on driving or automechanism to make open-shut device do lifting, slippage, swing or rotation motion, thereby the size that changes its Flow area is to realize its control function.In existing hand valve, the passage of valve handle activity does not communicate with the external world, and in this case, when the handle of hand valve is drawn out, what while flowing to outlet due to medium by import, produce causes handle to rebound compared with large pressure quitting work.
Therefore, be necessary to provide a kind of new hand valve to solve the problems referred to above.
[model utility content]
Main purpose of the present utility model be to provide a kind of use safely, there is the hand valve that prevents resilience function.
The utility model is achieved through the following technical solutions above-mentioned purpose: a kind of hand valve, comprise have valve-rod cavity valve body, seal described valve body front end and there is the valve gap of the first cavity, through the valve rod in described valve-rod cavity and the first cavity and seal the pedestal of described valve rear end, described valve body also has and is communicated with respectively described valve-rod cavity to extraneous import, bleed outlet and outlet, and described pedestal inside is provided with and is communicated with described valve body chamber and extraneous pilot pressure hole.
Concrete, described pedestal is also provided with the second cavity that is communicated with described pilot pressure hole and described valve-rod cavity, the rear end of described valve rod is provided with the positioning convex ring that external diameter is greater than described valve-rod cavity and described pilot pressure hole internal diameter, described positioning convex ring can be axially movable in the second cavity, and described positioning convex ring is provided with for accommodating the first ring connected in star of seal ring.
Concrete, one end that described pilot pressure hole is communicated with described the second cavity is provided with funnelform small-diameter hole, and it is most advanced and sophisticated that the rear end of described positioning convex ring is provided with the cone coordinating with described small-diameter hole.
Concrete, described pedestal comprises end cylinder and valve seat, and cylinder of the described end is connected in described valve body rear portion, and described valve seat is connected in cylinder rear portion, the described end, and described the second cavity is positioned at cylinder of the described end, and described pilot pressure hole is positioned at described valve seat.
Concrete, the anterior internal diameter of described the second cavity is less than rear portion internal diameter.
Concrete, described import and described bleed outlet are positioned at described valve-rod cavity the same side, described outlet is at opposite side and between described import and described bleed outlet, part aperture in described valve-rod cavity between described import and described bleed outlet is less than the aperture of adjacent portion, described valve rod is provided with the thin portion that one section of external diameter is less than the thinnest part internal diameter of described valve-rod cavity, and the external diameter that described valve rod is positioned at described thin portion two ends equals the thinnest part internal diameter of described valve-rod cavity.
Concrete, in described valve-rod cavity, between described outlet and described bleed outlet, being provided with for accommodating the second annular groove of seal ring, described valve rod is positioned at described thin portion the place ahead and is provided with for accommodating the 3rd annular groove of seal ring.
Concrete, the part that described valve rod is contained in the first cavity is provided with for accommodating the Fourth Ring connected in star of seal ring.
Concrete, the front portion of described valve rod is provided with screw thread bulge loop, and described screw thread bulge loop front portion is connected with and pulls parts.
Concrete, described in pull parts and comprise and be connected to the transit joint of described screw thread bulge loop front portion and the handle that is connected to described transit joint front portion.
Compared with prior art, the beneficial effect of the utility model hand valve is:
1, the valve seat of hand valve is provided with pilot pressure hole, valve rod prevents resilience in the situation that of having pilot pressure in pedestal and guarantees valve opening, only have when pilot pressure is lost and just understand throttle down, realized by the function of pilot pressure autocontrol valve gate switch.
2, the end cylinder of hand valve is provided with the second cavity, because the diameter of the positioning convex ring of valve rod afterbody is greater than the aperture of valve-rod cavity, guide's positioning hole, has formed the guide and limit function of the second cavity to positioning convex ring.
3, removable end cylinder and valve seat two-part of being divided into of the pedestal of hand valve, the second cavity in end cylinder is beloid, can not only make the positioning convex ring of valve rod can not deviate from the second cavity, and facilitate processing.
4, the funnel-like small-diameter hole of the valve seat of hand valve and the cone of valve rod rear end are most advanced and sophisticated coordinates, and valve rod is had to buffer function in push-and-pull process, reduces the impact force of valve rod to valve seat, thereby slows down the wearing and tearing of parts, increases the working life of described hand valve.
5, can to make it control convenient for the anterior parts that pull that connect of valve rod.
[accompanying drawing explanation]
Fig. 1 is the structural representation of the utility model hand valve while closing.
Structural representation when Fig. 2 is the work of the utility model hand valve.
Fig. 3 is the structural representation of the pedestal of the utility model hand valve.
Numeral in figure:
1 is handle, and 11 is handle tapped hole;
2 is transit joint, and 21 is transit joint tapped hole;
3 is valve rod, and 31 is screw thread bulge loop, and 32 is thin portion, 33 is positioning convex ring, 301 (a) are Fourth Ring connected in star (seal ring), and 302 (a) are the 3rd annular groove (seal ring), and 303 (a) are first ring connected in star (seal ring);
4 is valve gap, and 41 is the first cavity;
5 is valve body, and 51 is valve-rod cavity, and 52 is import, and 53 is leakage port, and 54 is outlet, and 501 (a) are the second annular groove (seal ring), and 502 (a) are five rings connected in star (seal ring);
6 is pedestal, and 61 is end cylinder, and 62 is valve seat, and 611 is the second cavity, and 621 is pilot pressure hole, and 622 is small-diameter hole, and 601 (a) are the 6th annular groove;
[embodiment]
Shown in Fig. 1, Fig. 2, a kind of hand valve of the utility model, comprises valve body 5, closed valve 5 front ends with valve-rod cavity 51 valve gap 4 with the first cavity 41, passes valve-rod cavity 51 and the valve rod 3 of the first cavity 41 and the pedestal 6 of closed valve 5 rear ends.Valve body 5 also has and is communicated with respectively valve-rod cavity 51 to extraneous import 52, bleed outlet 53 and outlet 54, and pedestal 6 comprises the end cylinder 61 that is provided with the second cavity 611 and the valve seat 62 that is provided with pilot pressure hole 621.
Referring to figs. 1 through Fig. 3, valve seat 62 is threadedly connected to end cylinder 61 rear portions, and end cylinder 61 is connected in valve body 5 rear portions.Pilot pressure hole 621 is communicated with the second cavity 611 with extraneous, the second cavity 611 is communicated with pilot pressure hole 621 and valve-rod cavity 51, the front portion in pilot pressure hole 621 is provided with funnelform small-diameter hole 622, after this portion aperture is little in the anterior aperture of the second cavity 611, and the front end of end cylinder 61 is provided with the 6th annular groove 601.Pilot pressure hole 621 has the effect that prevents valve rod 3 resiliences, when valve rod 3 is drawn out, the second cavity 611 internal pressures diminish, if exerted pressure in the second cavity 611 by pilot pressure hole 621, by pressure, prop up positioning convex ring 33, just can prevent thus the resilience of valve rod 3, use safer; Secondly, small-diameter hole 622 parts are arranged to most advanced and sophisticated cooperation of cone of funnel-like and valve rod 3 rear ends, play buffer function, thereby slow down the wearing and tearing of each threaded connection place, growth hand valve working life in the push-and-pull process of valve rod 3.In the second cavity 611, because the diameter of positioning convex ring 33 is greater than the aperture in valve-rod cavity 51, pilot pressure hole 621, therefore, positioning convex ring 33 is limited in moving axially in the second cavity 611, has formed the guide and limit function of 61 pairs of valve rods 3 of end cylinder.
With reference to Fig. 1, Fig. 2, on valve body 5 for medium enter import 52, the outlet 54 that reserves for medium, for export the bleed outlet 53 of 54 earth pressure releases be three with the vertical tapped hole that communicates of inner valve-rod cavity 51, conduit connectable.Import 52 and bleed outlet 53 are in the same side, and outlet 54 is at opposite side and between import 52 and bleed outlet 53.Valve body 5 also has the five rings connected in star 502 that is arranged on the second annular groove 501 between bleed outlet 53 and outlet 54 in valve-rod cavity 51, is arranged on front-end face, and the part aperture of valve-rod cavity 51 between import 52 and bleed outlet 53 is less than adjacent two-part aperture.
With reference to Fig. 1, Fig. 2, valve rod 3 is rod shaped structure of a reducing, have be arranged at valve rod 3 front portions screw thread bulge loop 31, corresponding to the thin portion 32 of part between import 52 and bleed outlet 53, be arranged at valve rod 3 afterbodys and can be in the second cavity 611 axial movable positioning convex rings 33.The part that valve rod 3 is contained in valve gap 4 is provided with Fourth Ring connected in star 301; The diameter of thin portion 32 is less than the diameter of adjacent portion, in thin portion 32, between import 52 and outlet 54, is provided with the 3rd annular groove 302; The diameter of positioning convex ring 33 is greater than the aperture in valve-rod cavity 51, pilot pressure hole 621, and positioning convex ring 33 is provided with first ring connected in star 303.
With reference to Fig. 1, Fig. 2, on first ring connected in star 303, can place seal ring 303a, when valve rod 3 is drawn out, seal ring 303a at the interior residing bore dia of the second cavity 611 from large to small, seal ring 303a is extruded, thereby the path in sealing the second cavity 611 and pilot pressure hole 621, has sealed and extraneous path.The second annular groove 501 can be placed seal ring 501a, when valve rod 3 is drawn out, because the second annular groove 501 corresponding valve rod 3 diameters in position change from small to big, thus crush seal circle 501a, make bleed outlet 53 and the channel jam that exports 54, reach sealing effect.On the 3rd annular groove 302, can place seal ring 302a, when valve rod 3 is pushed into contact during valve seat 62, due to seal ring 302a, in valve body chamber 51, interior residing bore dia is from large to small, therefore, seal ring 302a is extruded, and the path of blocking-up import 52 and outlet 54, reaches sealing effect.On Fourth Ring connected in star 301, can place seal ring 301a, for sealed valve cap 4 and extraneous path; Five rings connected in star 502 can be placed seal ring 502a, the gap for sealed valve body 5 with valve gap 4 surface of contact; The 6th annular groove 601 seal ring 601a, for sealing the gap of end cylinder 61 and valve body 5 surface of contact.
The utility model hand valve also has transit joint 2 in screw boss of being connected to 31, is connected to the handle 1 of transit joint 2 front portions.The inside of transit joint 2 is provided with tapped hole 21, is connected with screw thread bulge loop 31.The anterior outer side surface of transit joint 2 is provided with screw thread, and handle inside is provided with tapped blind hole 11 and is connected with it.
As shown in Figure 1, in present embodiment, when handle 1 is drawn out, transit joint 2 band ovable valve stems 3 outwards move, and due to seal ring, 501a is squeezed, and makes bleed outlet 53 and the channel jam that exports 54, now, import 52 communicates with outlet 54, so medium can be from import 52 flow direction outlets 54, and hand valve is started working.Now, if pressure has been set up in pilot pressure hole 621, even release handle 1, valve rod 3 can not rebound yet, but maintain ortho states, but pilot pressure hole 621 pressure loss, due to the pressure difference of positioning convex ring 33 left and right, rebound pressure promotion positioning convex ring 33 band ovable valve stem 3 integral body in valve body chamber 51 automatically.
As shown in Figure 2, in present embodiment, when handle 1 is pressed contact valve seat 62, due to seal ring 302a, in valve body chamber 51, interior residing bore dia is from large to small, seal ring 302a is extruded, and the path of blocking-up import 52 and outlet 54, now exports 54 and communicate with bleed outlet 53, medium flows to bleed outlet 53 from exporting 54, and hand valve is closed.
Below schematically the utility model and mode of execution thereof are described, this description does not have restricted, and shown in accompanying drawing is also one of mode of execution of the present utility model, and actual structure is not limited to this.So, if those of ordinary skill in the art is enlightened by it, in the situation that not departing from the utility model creation aim, without the creationary mode of structure similar to this technological scheme and the embodiment of designing, all should belong to protection domain of the present utility model.
Claims (10)
1. a hand valve, comprise have valve-rod cavity valve body, seal described valve body front end and there is the valve gap of the first cavity, through the valve rod of described valve-rod cavity and described the first cavity and seal the pedestal of described valve rear end, described valve body also has and is communicated with respectively described valve-rod cavity to extraneous import, bleed outlet and outlet, it is characterized in that: described pedestal inside is provided with and is communicated with described valve body chamber and extraneous pilot pressure hole.
2. hand valve according to claim 1, it is characterized in that: described pedestal is also provided with the second cavity that is communicated with described pilot pressure hole and described valve-rod cavity, the rear end of described valve rod is provided with the positioning convex ring that external diameter is greater than described valve-rod cavity and described pilot pressure hole internal diameter, described positioning convex ring can be axially movable in the second cavity, and described positioning convex ring is provided with for accommodating the first ring connected in star of seal ring.
3. hand valve according to claim 2, is characterized in that: one end that described pilot pressure hole is communicated with described the second cavity is provided with funnelform small-diameter hole, and it is most advanced and sophisticated that the rear end of described positioning convex ring is provided with the cone coordinating with described small-diameter hole.
4. hand valve according to claim 2, it is characterized in that: described pedestal comprises end cylinder and valve seat, cylinder of the described end is connected in described valve body rear portion, and described valve seat is connected in cylinder rear portion, the described end, described the second cavity is positioned at cylinder of the described end, and described pilot pressure hole is positioned at described valve seat.
5. hand valve according to claim 4, is characterized in that: the anterior internal diameter of described the second cavity is less than rear portion internal diameter.
6. hand valve according to claim 1, it is characterized in that: described import and described bleed outlet are positioned at described valve-rod cavity the same side, described outlet is at opposite side and between described import and described bleed outlet, part aperture in described valve-rod cavity between described import and described bleed outlet is less than the aperture of adjacent portion, described valve rod is provided with the thin portion that one section of external diameter is less than the thinnest part internal diameter of described valve-rod cavity, and the external diameter that described valve rod is positioned at described thin portion two ends equals the thinnest part internal diameter of described valve-rod cavity.
7. hand valve according to claim 6, it is characterized in that: in described valve-rod cavity, be provided with for accommodating the second annular groove of seal ring between described outlet and described bleed outlet, described valve rod is positioned at described thin portion the place ahead and is provided with for accommodating the 3rd annular groove of seal ring.
8. hand valve according to claim 1, is characterized in that: the part that described valve rod is contained in the first cavity is provided with for accommodating the Fourth Ring connected in star of seal ring.
9. hand valve according to claim 1, is characterized in that: the front portion of described valve rod is provided with screw thread bulge loop, and described screw thread bulge loop front portion is connected with and pulls parts.
10. hand valve according to claim 9, is characterized in that: described in pull parts and comprise and be connected to the transit joint of described screw thread bulge loop front portion and the handle that is connected to described transit joint front portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420412604.2U CN203963118U (en) | 2014-07-24 | 2014-07-24 | Hand valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420412604.2U CN203963118U (en) | 2014-07-24 | 2014-07-24 | Hand valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203963118U true CN203963118U (en) | 2014-11-26 |
Family
ID=51923700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420412604.2U Expired - Fee Related CN203963118U (en) | 2014-07-24 | 2014-07-24 | Hand valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203963118U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061847A (en) * | 2017-04-28 | 2017-08-18 | 德阳正光石油机械制造有限公司 | A kind of safety shut-off valve |
-
2014
- 2014-07-24 CN CN201420412604.2U patent/CN203963118U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061847A (en) * | 2017-04-28 | 2017-08-18 | 德阳正光石油机械制造有限公司 | A kind of safety shut-off 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: 20141126 Termination date: 20170724 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |