CN203614484U - Overflow valve - Google Patents
Overflow valve Download PDFInfo
- Publication number
- CN203614484U CN203614484U CN201320656790.XU CN201320656790U CN203614484U CN 203614484 U CN203614484 U CN 203614484U CN 201320656790 U CN201320656790 U CN 201320656790U CN 203614484 U CN203614484 U CN 203614484U
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- Prior art keywords
- valve
- passage
- main valve
- pilot
- valve core
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- Expired - Fee Related
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Abstract
The utility model relates to an overflow valve, which comprises a main valve and a pilot valve, wherein the pilot valve is arranged at the upper side of the main valve and is connected with the main valve in a sealed way, two ends of the pilot valve are respectively provided with sealing screw bolts, a valve core installing passage is arranged in the pilot valve, a valve core structure is arranged in the valve core installing passage, a liquid inlet passage is arranged on a valve body of the main valve, a main valve core is arranged in the liquid inlet passage, one side of the liquid inlet passage is provided with a liquid outlet passage, the liquid outlet passage is connected with the valve core installing passage through a first connecting passage, the other side of the liquid inlet passage is connected with the end part of the valve core structure of the pilot valve through a first pressure control structure, and the main valve core is connected with the end part of the valve core structure of the pilot valve through a second pressure control structure. The overflow valve has the advantages that the stability of the pressure oil supply is ensured through the first pressure control structure arranged at one side of the liquid inlet passage and the second pressure control structure arranged between the main valve core and the valve core structure, the control precision of the overflow valve is ensured, the flowing capacity of the overflow valve is high, the noise is low, the opening and closing characters are good, and the performance is stable.
Description
Technical field
The utility model relates to a kind of hydrovalve, especially a kind of relief valve.
Background technique
Relief valve is a kind of hydraulic pressure control valve, a main level pressure overflow, voltage stabilizing in hydraulic equipment, with safety protection effect, in metering pump throttling regulating system, metering pump provides constant flow rate, in the time that system pressure increases, can make traffic demand reduce, now relief valve is opened, and makes the unnecessary flow oil sump tank that overflows, guarantee relief valve inlet pressure, i.e. pump discharge pressure constant (valve port is often opened with pressure surge); Relief valve is connected on oil circuit, and relief valve produces back pressure, and moving element stationarity increases, and has played the effect of voltage stabilizing.
Traditional relief valve mainly comprises valve body, be arranged on the main valve seat of valve body one end, the pilot valve spring that is arranged on the guide valve core in this valve body and is connected with this guide valve core, on main valve seat, be provided with pilot valve oil back chamber, main valve chamber, pilot valve oil back chamber spill port and main valve spill port, this relief valve there will be the unsettled phenomenon of pressure oil control, and control accuracy is not high.
Model utility content
The purpose of this utility model is in order to solve the existing defect of relief valve in prior art, to provide a kind of control accuracy high, the relief valve that pressure oil control is stable.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of relief valve, the pilot valve that comprises main valve and be arranged on this main valve top and be tightly connected with it, the two ends of described pilot valve are equipped with sealing bolt, in described pilot valve, be provided with spool passage is installed, in this spool is installed passage, be provided with valve core structure, the valve body of described main valve is provided with feed pathway, in this feed pathway, is provided with main valve plug, one side of described feed pathway is provided with liquid outlet channel, and this liquid outlet channel is installed passage by the first connecting passage and described spool and is connected;
The opposite side of described feed pathway is connected with the valve core structure end of described pilot valve by the first pressure control structure, and described main valve plug is connected with the valve core structure end of described pilot valve by the second pressure control structure.
Above-mentioned a kind of relief valve, described valve core structure comprises and is fixed on the Compress Spring on described pilot valve one side sealing bolt and is sleeved on the cone valve on this Compress Spring.
Above-mentioned a kind of relief valve, described the first pressure control structure comprises the second connecting passage that the first damper of being arranged on a side of described feed pathway and being positioned at described main valve plug lower end and two ends are tightly connected with described the first damper and pilot valve respectively.
Above-mentioned a kind of relief valve, described the second pressure control structure comprises and is arranged on the second damper of described main valve plug upper end and the 3rd connecting passage that two ends are connected with described the second damper and one side sealing of described cone valve respectively.
Above-mentioned a kind of relief valve, described main valve plug is the cone type of butt.
Above-mentioned a kind of relief valve, described cone valve is cone type.
The beneficial effects of the utility model are: the second pressure control structure between the first pressure control structure and main valve plug and the valve core structure of this relief valve feed pathway one side has guaranteed the stability that pressure oil is supplied with, guarantee the control accuracy of relief valve, the negotiability of this relief valve is strong, noise is low, open and shut characteristic is good, stable performance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
For making that structure characteristic of the present utility model and effect of reaching are had and further understand and be familiar with, coordinate detailed explanation in order to preferred embodiment and accompanying drawing, be described as follows:
As shown in Figure 1, a kind of relief valve, the pilot valve 2 that comprises main valve 1 and be arranged on this main valve 1 top and be tightly connected with it, the two ends of pilot valve 2 are respectively equipped with sealing bolt 3 and sealing bolt 4, in pilot valve 2, be provided with spool passage 5 is installed, in installing passage 5, this spool is provided with valve core structure, the valve body of main valve 1 is provided with feed pathway 6, in this feed pathway 6, be provided with main valve plug 7, one side of feed pathway 6 is provided with liquid outlet channel 8, and this liquid outlet channel 8 is installed passage 5 by the first connecting passage 9 and spool and is connected;
The opposite side of feed pathway 6 is connected with the valve core structure end of pilot valve 2 by the first pressure control structure, and main valve plug 7 is connected with the valve core structure end of pilot valve 2 by the second pressure control structure.
In the utility model, sealing bolt 3 is provided with valve seat 16, is provided with outer row mouthfuls 17 on this valve seat 16, and valve core structure comprises and is fixed on the Compress Spring 10 on pilot valve 2 one side valve seats 16 and is sleeved on the cone valve 11 on this Compress Spring 10.
The first pressure control structure comprises the second connecting passage 13 that the first damper 12 of being arranged on a side of feed pathway 6 and being positioned at main valve plug 7 lower ends and two ends are tightly connected with the first damper 12 and pilot valve 2 respectively.
The second pressure control structure comprises and is arranged on the second damper 14 of main valve plug 7 upper ends and the 3rd connecting passage 15 that two ends are connected with the second damper 14 and cone valve 11 1 side sealings respectively.
In the utility model, main valve plug 7 is the cone type of butt, and cone valve 11 is cone type.
In the time that this relief valve is started working, when pressure oil enters into the lower end that acts on main valve plug 7 in feed pathway 6, act on the upper end of main valve plug 7 and the cone valve 11 of pilot valve 2 by the first damper 12 and the second damper 14, in the time that the pressure of system exceedes the set pressure of pilot valve 2 Compress Springs 10, cone valve 11 is opened, the pressure of main valve plug 7 upper ends is by the second damper 14 simultaneously, the 3rd connecting passage 15, spool is installed by passage 5 and the first connecting passage 9 is back to liquid outlet channel 8 or flows back to fuel tank by the outer row's mouth 17 on valve seat 16, when the pressure oil of this relief valve passes through the first damper 12 and the second damper 14, on main valve plug 7, produce a pressure difference, main valve plug 7 is opened under the effect of this pressure difference, under the pressure of now setting up at Compress Spring 10, pressure oil flows to liquid outlet channel 8 off-loads from feed pathway 6, negotiability is strong, noise is low, open and shut characteristic is good, stable performance.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what in above-described embodiment and specification, describe is principle of the present utility model; under the prerequisite that does not depart from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall in claimed scope of the present utility model.The protection domain that the utility model requires is defined by appending claims and equivalent thereof.
Claims (6)
1. a relief valve, the pilot valve that comprises main valve and be arranged on this main valve top and be tightly connected with it, the two ends of described pilot valve are equipped with sealing bolt, in described pilot valve, be provided with spool passage is installed, in installing passage, this spool is provided with valve core structure, it is characterized in that: the valve body of described main valve is provided with feed pathway, in this feed pathway, be provided with main valve plug, one side of described feed pathway is provided with liquid outlet channel, and this liquid outlet channel is installed passage by the first connecting passage and described spool and is connected; The opposite side of described feed pathway is connected with the valve core structure end of described pilot valve by the first pressure control structure, and described main valve plug is connected with the valve core structure end of described pilot valve by the second pressure control structure.
2. a kind of relief valve according to claim 1, is characterized in that, described valve core structure comprises and is fixed on the Compress Spring on described pilot valve one side sealing bolt and is sleeved on the cone valve on this Compress Spring.
3. a kind of relief valve according to claim 1, it is characterized in that, described the first pressure control structure comprises the second connecting passage that the first damper of being arranged on a side of described feed pathway and being positioned at described main valve plug lower end and two ends are tightly connected with described the first damper and pilot valve respectively.
4. a kind of relief valve according to claim 2, it is characterized in that, described the second pressure control structure comprises and is arranged on the second damper of described main valve plug upper end and the 3rd connecting passage that two ends are connected with described the second damper and one side sealing of described cone valve respectively.
5. a kind of relief valve according to claim 1, is characterized in that, described main valve plug is the cone type of butt.
6. a kind of relief valve according to claim 1, is characterized in that, described cone valve is cone type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320656790.XU CN203614484U (en) | 2013-10-23 | 2013-10-23 | Overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320656790.XU CN203614484U (en) | 2013-10-23 | 2013-10-23 | Overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203614484U true CN203614484U (en) | 2014-05-28 |
Family
ID=50767133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320656790.XU Expired - Fee Related CN203614484U (en) | 2013-10-23 | 2013-10-23 | Overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203614484U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927608A (en) * | 2016-07-12 | 2016-09-07 | 芜湖繁星教育咨询有限公司 | Pilot controller |
| CN106015141A (en) * | 2016-07-12 | 2016-10-12 | 芜湖繁星教育咨询有限公司 | Pilot control device suitable for pilot valve |
| CN112833063A (en) * | 2020-12-26 | 2021-05-25 | 哈尔滨工业大学 | Hydraulic pressure flow divider valve with multi-stage pressure feedback |
-
2013
- 2013-10-23 CN CN201320656790.XU patent/CN203614484U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927608A (en) * | 2016-07-12 | 2016-09-07 | 芜湖繁星教育咨询有限公司 | Pilot controller |
| CN106015141A (en) * | 2016-07-12 | 2016-10-12 | 芜湖繁星教育咨询有限公司 | Pilot control device suitable for pilot valve |
| CN112833063A (en) * | 2020-12-26 | 2021-05-25 | 哈尔滨工业大学 | Hydraulic pressure flow divider valve with multi-stage pressure feedback |
| CN112833063B (en) * | 2020-12-26 | 2021-09-28 | 哈尔滨工业大学 | Hydraulic pressure flow divider valve with multi-stage pressure feedback |
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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: 20140528 Termination date: 20151023 |
|
| EXPY | Termination of patent right or utility model |