CN104373649A - Pressure-limiting valve - Google Patents
Pressure-limiting valve Download PDFInfo
- Publication number
- CN104373649A CN104373649A CN201410649022.0A CN201410649022A CN104373649A CN 104373649 A CN104373649 A CN 104373649A CN 201410649022 A CN201410649022 A CN 201410649022A CN 104373649 A CN104373649 A CN 104373649A
- Authority
- CN
- China
- Prior art keywords
- valve
- pressure
- cone
- sleeve
- spring
- 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.)
- Pending
Links
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 230000001276 controlling effect Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 5
- 230000003139 buffering effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/168—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side combined with manually-controlled valves, e.g. a valve combined with a safety valve
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to the field of valve control, in particular to a pressure-limiting valve. The pressure-limiting valve comprises a valve seat and a valve element, and the valve element is arranged in the valve seat. The pressure-limiting valve is characterized in that the valve seat comprises an upper valve seat body and a lower valve seat body, a conical valve body for controlling pressure is arranged in the upper valve seat body, a main valve body for controlling the liquid discharge amount is arranged in the lower valve seat body, the conical valve body is composed of an adjusting handle and a conical valve element, a spring is arranged between the adjusting handle and the conical valve element, the main valve body comprises a circular cone valve element, a sleeve and a valve rod, the circular cone valve element is arranged on the sleeve, the two sides of the sleeve are arranged on the lower valve seat body, a spring is arranged between the valve rod and the circular cone valve element, a groove is formed in the lower end of the valve rod, a boss is arranged on the circular cone valve element, a groove is formed in the boss, the spring is arranged in the groove in the lower portion of the valve rod and the groove in the boss of the circular cone valve element in a sleeved mode, and the upper surface of the valve rod is in contact with the conical valve element of the conical valve. According to the pressure-limiting valve, fine pressure adjustment can be carried out, and it can be guaranteed that the springs are not prone to falling off.
Description
Technical field
The present invention relates to Valve controlling field, be specifically related to a kind of pressure-limit valve.
Background technique
In some hydraulic control devices, usually can use pressure-limit valve, but larger for flow; or regulation precision requires higher place; only using direct acting pressure-limit valve to be inadequate, because the spring of pressure-limit valve easily comes off, therefore with regard to needing, the pressure-limit valve of half being improved.
Summary of the invention
The present invention, in order to overcome the problems referred to above, provides a kind of can carrying out and finely tunes pressure and can ensure a kind of pressure-limit valve that spring not easily drops.
The technological scheme solved the problems of the technologies described above is as follows:
A kind of pressure-limit valve, comprise valve seat and spool, spool is arranged in valve seat, described valve seat comprises upper valve base and lower valve base, the cone valve of pilot pressure is provided with in upper valve base, the main valve controlling lifting rate is provided with in lower valve base, described cone valve is made up of regulating handle and taper valve core, spring is provided with between regulating handle and taper valve core, described main valve comprises cone poppet, sleeve and valve rod, cone poppet is arranged on above sleeve, sleeve both sides are arranged on lower valve base, spring is provided with between valve rod and cone poppet, valve rod lower end is provided with groove, boss is provided with above cone poppet, the groove that boss is provided with, described spring housing is contained in the groove on stem lower portion and cone poppet boss, described valve rod upper surface contacts with the taper valve core of cone valve.
Described cone poppet lower end is connected with damper piston, and damper piston can make the pressure in pipeline to the stressed effect playing buffering of cone poppet, can reduce the impact to cone poppet, reduce the wearing and tearing to cone poppet.
Described sleeve and valve seat joint are provided with seal ring, when pressure-limit valve cuts out, can ensure below valve core of pressure-limiting valve with valve core of pressure-limiting valve above sealing, prevent liquid from rushing gap between sleeve or valve seat and flow out, ensure the stability of pipeline.
Adopt such scheme, owing to being provided with the cone valve of pilot pressure in upper valve base, cone valve is made up of regulating handle and taper valve core, spring is provided with between regulating handle and taper valve core, regulating handle can regulate the pressurized size of cone valve, the main valve controlling lifting rate is provided with in lower valve base, main valve comprises cone poppet, sleeve and valve rod, spring is provided with between valve rod and cone poppet, valve rod lower end is provided with groove, boss is provided with above cone poppet, the groove that boss is provided with, spring housing is contained in the groove on stem lower portion and cone poppet boss, spring upper and lower end suit in a groove, the situation about coming off of pressure-limit valve spring in use can be prevented.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is structural representation of the present invention.
In figure, 1 is valve seat, and 2 is upper valve base, and 3 is lower valve base, and 4 is cone valve, and 5 is main valve, and 6 is regulating handle, and 7 is taper valve core, and 8 is spring, and 9 is cone poppet, and 10 is sleeve, and 11 is valve rod, and 12 is damper piston.
Embodiment
As shown in the figure, a kind of pressure-limit valve, comprise valve seat 1 and spool, spool is arranged in valve seat 1, valve seat 1 comprises upper valve base 2 and lower valve base 3, the cone valve 4 of pilot pressure is provided with in upper valve base 2, the main valve 5 controlling lifting rate is provided with in lower valve base 3, cone valve 4 is made up of regulating handle 6 and taper valve core 7, regulating handle 6 can regulate the pressurized size of cone valve 4, spring 8 is provided with between regulating handle 6 and taper valve core 7, main valve 5 comprises cone poppet 9, sleeve 10 and valve rod 11, cone poppet 9 is arranged on above sleeve 10, sleeve 10 both sides are arranged on lower valve base 3, cone poppet 9 lower end is connected with damper piston 12, it is inner that damper piston 12 is arranged on sleeve 10, damper piston 12 can make the pressure in pipeline to the stressed effect playing buffering of cone poppet 9, the impact to cone poppet 9 can be reduced, sleeve 10 and valve seat 1 joint are provided with seal ring, when pressure-limit valve cuts out, can ensure below valve core of pressure-limiting valve with valve core of pressure-limiting valve above sealing, the gap preventing liquid from rushing between sleeve or valve seat is flowed out, ensure the stability of pipeline, reduce the wearing and tearing to cone poppet 9, spring is provided with between valve rod 11 and cone poppet 9, valve rod 11 lower end is provided with groove, cone poppet 9 is provided with boss above, the groove that boss is provided with, spring housing is contained in the groove on valve rod 11 bottom and cone poppet 9 boss, spring upper and lower end suit in a groove, the situation about coming off of pressure-limit valve spring in use can be prevented, valve rod 11 upper surface contacts with the taper valve core 7 of cone valve 4, liquid enters from inlet, promote cone poppet 9 to move upward, thus spring and valve rod 11 are moved upward, extrude the taper valve core 7 be connected with valve rod 11, if when extruding force can make taper valve core 7 move to regulating handle 6, regulating handle 6 can regulate the size needing extruding force, main valve 5 just can be opened, liquid just can flow to outlet from inlet, when main valve 5 will be closed, only need rotate regulating handle 6, taper valve core 7 is travelled forward, extruding valve rod 11, valve rod 11 is moved downward, cone poppet 9 just can be made to move downward, be stuck on sleeve 10, or closing liquid, under the effect of the spring be connected with valve rod 11, make cone poppet 9 under the effect of this spring, move downward, again under the effect of spring 8, taper valve core 7 is travelled forward, extruding valve rod 11 moves downward, pressure-limit valve is made to follow a part all to return to original seat.
The present invention is not limited to described embodiment, and those skilled in the art, not departing from spirit of the present invention namely openly in scope, still can do some and revise or change, therefore the scope that the scope of the present invention limits with claims is as the criterion.
Claims (3)
1. a pressure-limit valve, comprise valve seat and spool, spool is arranged in valve seat, it is characterized in that, described valve seat comprises upper valve base and lower valve base, the cone valve of pilot pressure is provided with in upper valve base, the main valve controlling lifting rate is provided with in lower valve base, described cone valve is made up of regulating handle and taper valve core, spring is provided with between regulating handle and taper valve core, described main valve comprises cone poppet, sleeve and valve rod, cone poppet is arranged on above sleeve, sleeve both sides are arranged on lower valve base, spring is provided with between valve rod and cone poppet, valve rod lower end is provided with groove, boss is provided with above cone poppet, the groove that boss is provided with, described spring housing is contained in the groove on stem lower portion and cone poppet boss, described valve rod upper surface contacts with the taper valve core of cone valve.
2. a kind of pressure-limit valve according to claim 1, is characterized in that, described cone poppet lower end is connected with damper piston.
3. a kind of pressure-limit valve according to claim 1, is characterized in that, described sleeve and valve seat joint are provided with seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410649022.0A CN104373649A (en) | 2014-11-14 | 2014-11-14 | Pressure-limiting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410649022.0A CN104373649A (en) | 2014-11-14 | 2014-11-14 | Pressure-limiting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104373649A true CN104373649A (en) | 2015-02-25 |
Family
ID=52552731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410649022.0A Pending CN104373649A (en) | 2014-11-14 | 2014-11-14 | Pressure-limiting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104373649A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969176A (en) * | 2017-05-18 | 2017-07-21 | 盐城欧润石化设备制造有限公司 | A kind of automatic decompression valve |
| CN110513517A (en) * | 2019-08-29 | 2019-11-29 | 刘州豪 | A kind of safety valve preventing the spool prooving of valve seat |
-
2014
- 2014-11-14 CN CN201410649022.0A patent/CN104373649A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969176A (en) * | 2017-05-18 | 2017-07-21 | 盐城欧润石化设备制造有限公司 | A kind of automatic decompression valve |
| CN110513517A (en) * | 2019-08-29 | 2019-11-29 | 刘州豪 | A kind of safety valve preventing the spool prooving of valve seat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150225 |
|
| WD01 | Invention patent application deemed withdrawn after publication |