CN103711752A - Pressure relief valve with function of automatic air exhaust on hydraulic oil cavity - Google Patents
Pressure relief valve with function of automatic air exhaust on hydraulic oil cavity Download PDFInfo
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- CN103711752A CN103711752A CN201310737830.8A CN201310737830A CN103711752A CN 103711752 A CN103711752 A CN 103711752A CN 201310737830 A CN201310737830 A CN 201310737830A CN 103711752 A CN103711752 A CN 103711752A
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- valve
- pressure relief
- relief valve
- spool
- valve body
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Abstract
The invention discloses a pressure relief valve with a function of automatic air exhaust on a hydraulic oil cavity. The pressure relief valve comprises a valve body (2) and a valve seat (4) installed at the bottom of the valve body (2), wherein the valve seat (4) is provided with a medium passage (5), a cavity (6) is formed in the valve body (2), a valve element (8) used for closing the medium passage (5) is arranged in the cavity (6), a valve element cover (10) is arranged at the top of the valve element (8), and an elastic assembly (12) for pressing the valve element cover (10) is arranged at the top of the valve element cover (10). The pressure relief valve is characterized by further comprising an air exhaust assembly (14) communicated with the medium passage (5). The pressure relief valve with the function of automatic air exhaust on the hydraulic oil cavity has the function of automatically discharging residual air, is simple in structure, and is convenient to popularize.
Description
Technical field
The present invention relates to a kind of pressure relief valve, relate in particular on a kind of hydraulic fluid chamber the pressure relief valve with automatic ventilating function.
Background technique
Metering pump be a kind of flow can be within the scope of 0-100% step-less adjustment, be used for carrying a kind of special displacement pump of liquid (particularly corrosive liquids).Development along with modern industry automaticity; the use of metering pump is more and more extensive, yet, in long-term use, find; the pressure relief valve using on most of metering pump hydraulic fluid chambers; on its valve core structure, be not all provided with exhaust structure, therefore, do not there is degassing function; yet; the inevitable entrained air of meeting when the hydraulic fluid chamber of metering pump is shut down dismounting under cavity state, and in the operation process of pump, hydraulic oil also easily produces oily foam.The metering pump of existing structure is no matter before running or in operation process, due to the pressure return effect of pressure relief valve Elastic assembly to spool, cause spool to close the medium channel on valve seat, the air being mixed in like this in hydraulic fluid chamber just cannot discharge in the situation that inside and outside differential pressure is less, these air that remain in hydraulic fluid chamber not only can affect the precision of metering pump, also can have a strong impact on the stability of metering pump running, and, in the operation process of pump, hydraulic oil also easily produces oily foam.Therefore, discharge residual air is most important for metering pump.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of pressure relief valve with discharge means.
For solving the problems of the technologies described above, the invention provides on a kind of hydraulic fluid chamber the pressure relief valve with automatic ventilating function, comprise valve body and be installed on the valve seat of valve body bottom, on described valve seat, there is medium channel, in described valve body, have cavity, be provided with for closing the spool of described medium channel in described cavity, the top of described spool is provided with cartridge cover, the top of described cartridge cover is provided with the elastic component of the described cartridge cover of compressing, also comprises the discharge means that is communicated with described medium channel.
Described discharge means comprises and is opened in the exhaust port communicating with described medium channel on described spool, and for closing the valve ball of described exhaust port, being arranged in the valve ball moving conduit on described spool of described valve ball activity.
Described discharge means also comprises the movable depression bar arranging, and described depression bar runs through described cartridge cover and contacts with described valve ball.
Described elastic component comprises helical spring and the described helical spring spring seat of compressing.
The top of described spring seat is provided with adjusting bolt.
The top of described valve body is provided with dismountable bonnet.
Beneficial effect of the present invention is: because the pressure relief valve with automatic ventilating function on hydraulic fluid chamber of the present invention has discharge means, in the time of can or turning round before metering pump running by this discharge means, get rid of residual air, thereby can guarantee the measuring accuracy of metering pump and the stability of operation, therefore the present invention has automatic ventilating function, and simple in structure, be convenient to promote.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
In figure: bonnet 1, valve body 2, valve seat 4, medium channel 5, cavity 6, spool 8, cartridge cover 10, elastic component 12, discharge means 14, exhaust port 81, valve ball 82, valve ball moving conduit 83, depression bar 84, helical spring 121, spring seat 122, adjusting bolt 123.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details: shown in Figure 1, on a kind of hydraulic fluid chamber of the present invention with the pressure relief valve of automatic ventilating function, include the valve body 2 of lengthwise, the top of valve body 2 is provided with dismountable bonnet 1, the bottom of valve body 2 is provided with valve seat 4, the medium channel 5 on valve seat 4 with circulation medium, in valve body 2, there is cavity 6, in this cavity 6, be provided with spool 8, cartridge cover 10 and elastic component 12, spool 8 is for closing medium channel 5, cartridge cover 10 is oppressed on spool 8 by elastic component 12, the discharge means 14 that focuses on of the present invention, discharge means 14 comprises and is opened in the exhaust port 81 communicating with medium channel 5 on spool 8, and for closing the valve ball 82 of exhaust port 81, being arranged in the valve ball moving conduit 83 on spool 8 of these valve ball 82 activities, valve ball 82 top movable be provided with depression bar 84, this depression bar 84 runs through cartridge cover 10 and contacts with valve ball 82.Venting principleand of the present invention is: while there is residual gas in hydraulic fluid chamber, before metering pump running or while turning round, the compression that is subject to inhaling journey liquid due to the space in hydraulic fluid chamber, under certain pressure reduction, just can back down valve ball 82, thereby play scavenging action, after exhaust completes, depression bar 84 is at self gravitation effect lower compression valve ball 82, thereby valve ball 82 is fallen after rise and again close exhaust port 81, it is emphasized that, residual gas is when jack-up valve ball 82, because the reset response spool 8 of elastic component 12 can be in closed condition.
For the elastic reset effect of poppe tvalve core 8, elastic component 12 comprises the spring seat 122 of helical spring 121 and compressing helical spring 121, simultaneously in order to realize adjustability, at the top of spring seat 122, is provided with adjusting bolt 123.
In sum, the present invention is by the design of discharge means 14, thereby the spool that can effectively solve on traditional pressure relief valve does not have degassing function, the problem that the gas in hydraulic fluid chamber cannot effectively be discharged; At metering pump, shut down after mounting or dismounting, while having residual gas in hydraulic fluid chamber, or before pump running or while turning round, due to the compression that the space of hydraulic fluid chamber is subject to inhaling journey liquid, under very little pressure reduction, just can back down valve ball 82, play scavenging action.Meanwhile, also there is knot simple structure, be easy to the advantage of promoting.
The foregoing is only better embodiment of the present invention; protection scope of the present invention is not limited with above-mentioned mode of execution; in every case the equivalence that those of ordinary skills do according to disclosed content is modified or is changed, and all should include in the protection domain of recording in claims.
Claims (6)
- On a hydraulic fluid chamber with the pressure relief valve of automatic ventilating function, comprise valve body (2) and be installed on the valve seat (4) of valve body (2) bottom, on described valve seat (4), there is medium channel (5), in described valve body (2), there is cavity (6), in described cavity (6), be provided with the spool (8) for closing described medium channel (5), the top of described spool (8) is provided with cartridge cover (10), the top of described cartridge cover (10) is provided with the elastic component (12) of the described cartridge cover of compressing (10), it is characterized in that: also comprise the discharge means (14) that is communicated with described medium channel (5).
- 2. pressure relief valve according to claim 1, it is characterized in that: described discharge means (14) comprises that being opened in described spool (8) goes up the exhaust port (81) communicating with described medium channel (5), and for closing the valve ball (82) of described exhaust port (81), what described valve ball (82) was movable is arranged in the valve ball moving conduit (83) on described spool (8).
- 3. pressure relief valve according to claim 2, is characterized in that: described discharge means (14) also comprises the movable depression bar (84) arranging, and described depression bar (84) runs through described cartridge cover (10) and contacts with described valve ball (82).
- 4. pressure relief valve according to claim 1, is characterized in that: described elastic component (12) comprises the spring seat (122) of helical spring (121) and the described helical spring of compressing (121).
- 5. pressure relief valve according to claim 4, is characterized in that: the top of described spring seat (122) is provided with adjusting bolt (123).
- 6. according to the pressure relief valve described in any one in claim 1 to 5, it is characterized in that: the top of described valve body (2) is provided with dismountable bonnet (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310737830.8A CN103711752B (en) | 2013-12-27 | 2013-12-27 | The pressure relief valve of band automatic ventilating function on hydraulic fluid chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310737830.8A CN103711752B (en) | 2013-12-27 | 2013-12-27 | The pressure relief valve of band automatic ventilating function on hydraulic fluid chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103711752A true CN103711752A (en) | 2014-04-09 |
| CN103711752B CN103711752B (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310737830.8A Active CN103711752B (en) | 2013-12-27 | 2013-12-27 | The pressure relief valve of band automatic ventilating function on hydraulic fluid chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103711752B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112747012A (en) * | 2020-12-30 | 2021-05-04 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Automatic exhaust valve device and exhaust method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2133118A (en) * | 1982-12-27 | 1984-07-18 | Koomey Inc | Quick fluid exhaust valve |
| CN201306286Y (en) * | 2008-11-25 | 2009-09-09 | 天津市瑞德螺杆泵制造技术有限公司 | Double-screw liquefied gas pump by-pass valve |
| CN202001685U (en) * | 2010-12-29 | 2011-10-05 | 江村 | Pressure-bearing rod bell jar valve clack sealing type safety valve |
| DE102011089984A1 (en) * | 2011-12-27 | 2013-06-27 | Robert Bosch Gmbh | Piston pump for hydraulic assembly of vehicle brake system, has pump casing cover for closing attenuation space, which is arranged separately from the pump cylinder portion of pump casing |
| CN103452831A (en) * | 2013-08-20 | 2013-12-18 | 米顿罗工业设备（上海）有限公司 | Automatic exhausting valve applied to sinking type pump head applied in metering pump |
| CN203670365U (en) * | 2013-12-27 | 2014-06-25 | 胜瑞兰工业设备（苏州）有限公司 | Hydraulic oil cavity pressure relief valve with automatic exhaust function |
-
2013
- 2013-12-27 CN CN201310737830.8A patent/CN103711752B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2133118A (en) * | 1982-12-27 | 1984-07-18 | Koomey Inc | Quick fluid exhaust valve |
| CN201306286Y (en) * | 2008-11-25 | 2009-09-09 | 天津市瑞德螺杆泵制造技术有限公司 | Double-screw liquefied gas pump by-pass valve |
| CN202001685U (en) * | 2010-12-29 | 2011-10-05 | 江村 | Pressure-bearing rod bell jar valve clack sealing type safety valve |
| DE102011089984A1 (en) * | 2011-12-27 | 2013-06-27 | Robert Bosch Gmbh | Piston pump for hydraulic assembly of vehicle brake system, has pump casing cover for closing attenuation space, which is arranged separately from the pump cylinder portion of pump casing |
| CN103452831A (en) * | 2013-08-20 | 2013-12-18 | 米顿罗工业设备（上海）有限公司 | Automatic exhausting valve applied to sinking type pump head applied in metering pump |
| CN203670365U (en) * | 2013-12-27 | 2014-06-25 | 胜瑞兰工业设备（苏州）有限公司 | Hydraulic oil cavity pressure relief valve with automatic exhaust function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112747012A (en) * | 2020-12-30 | 2021-05-04 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Automatic exhaust valve device and exhaust method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103711752B (en) | 2016-08-24 |
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