CN111810482A - Miniature pressure-adjustable hydraulic overflow valve - Google Patents
Miniature pressure-adjustable hydraulic overflow valve Download PDFInfo
- Publication number
- CN111810482A CN111810482A CN202010744898.9A CN202010744898A CN111810482A CN 111810482 A CN111810482 A CN 111810482A CN 202010744898 A CN202010744898 A CN 202010744898A CN 111810482 A CN111810482 A CN 111810482A
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- China
- Prior art keywords
- valve body
- valve
- section
- spring
- pressure
- 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
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
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- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
- F16K1/465—Attachment of sealing rings to the valve seats
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- 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
Abstract
The invention relates to a miniature pressure-adjustable hydraulic overflow valve which comprises a valve body, a valve core, an end cover and a spring, wherein an oil hole is formed in the valve body, the diameter of the oil hole is gradually reduced and comprises a large-diameter section, a medium-diameter section and a small-diameter section, the small-diameter section is an oil inlet, a first radial outflow hole is formed in the side face of the valve body, a second outflow hole is formed in the end cover and fixedly connected to the end portion of the large-diameter section of the oil hole, one end of the spring abuts against the end cover, the other end of the spring abuts against the valve core, the valve core comprises a valve rod and a valve body, the valve body penetrates through the medium-diameter section, the end portion of the valve body is in a conical shape and abuts. The pressure relief valve has high pressure relief speed, and the valve core can be self-regulated according to the pressure value of hydraulic oil.
Description
Technical Field
The invention relates to a miniature pressure-adjustable hydraulic overflow valve.
Background
The overflow valve is a control element used for controlling the pressure of the hydraulic oil and releasing the pressure of the hydraulic oil, so that the pressure value of the hydraulic oil is in a fixed range. The pressure value of hydraulic oil is in the change condition all the time, and when the pressure value exceeded the standard, the efficiency of hydraulic oil pressure release had been decided to the case opening degree of overflow valve, and the case opening and closing degree of traditional overflow valve can not carry out the self-regulation according to the pressure value of hydraulic oil, and pressure release efficiency is slower moreover.
Disclosure of Invention
The invention aims to provide a miniature pressure-adjustable hydraulic overflow valve which is high in pressure relief speed and can self-adjust a valve core according to the pressure value of hydraulic oil.
In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides a miniature adjustable pressure hydraulic pressure overflow valve, includes valve body, case, end cover and spring, be equipped with the fluid hole on the valve body, what the fluid hole diameter reduced gradually includes big footpath section, well footpath section and path section, the side of valve body has radial first outflow hole, the second outflow hole has on the end cover to fixed connection is at the big footpath section tip in fluid hole, the one end of spring supports on the end cover, and the other end supports on the case, and the case includes valve rod and valve body, and the valve body passes well footpath section, and the tip is the cone form to support the drill way department at the path section, the periphery of valve body has the axial oil groove of leading.
Preferably, the periphery of the valve body is provided with a radial sealing groove, and an O-shaped sealing ring is arranged in the sealing groove. The sealing effect is guaranteed after the valve body is installed, and the oil inlet and outlet holes are isolated.
Preferably, the end cover is in threaded connection with one end of the large-diameter section of the oil hole. The installation efficiency is guaranteed.
Preferably, the end cover is provided with a boss, one end of the spring is sleeved on the boss, the valve core is provided with an outward radial abutting table, and the other end of the spring abuts on the radial abutting table. The spring mounting does not deflect.
Preferably, the oil guide groove of the valve body has three trisections. The pressure relief speed is improved.
Preferably, be equipped with the reaming section that links to each other with the minor diameter section on the oil hole other end, the reaming section is the fluid entry, and the reaming section has the internal thread, and the periphery that the valve body is located reaming section department is equipped with the internal thread. Installation convenient for valve body in use
After the structure is adopted, in the overflow process, when the pressure value of the hydraulic oil exceeds the standard value, the pressure value is larger than the elastic force of the spring. The valve body is backed up, and hydraulic oil gets into through leading the oil groove, gets into the oil tank from first outflow orifice and second outflow orifice and carries out the pressure release in. And the pressure of hydraulic oil is big more, and the spring compressed is more, and the degree that the case was opened just is big more, and hydraulic oil backward flow will be more, and the pressure release is fast, therefore the overflow valve can carry out self-control according to the pressure value, adjusts the pressure release speed.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following examples, which are given in conjunction with the accompanying drawings.
Referring to fig. 1, a miniature pressure-adjustable hydraulic relief valve comprises a valve body 1, a valve core 2, an end cover 3 and a spring 4, wherein an oil hole 11 is formed in the valve body 1, the diameter of the oil hole 11 is gradually reduced and comprises a large-diameter section 111, a middle-diameter section 112 and a small-diameter section 113, a first radial outflow hole 12 is formed in the side surface of the valve body 1, a second outflow hole 31 is formed in the end cover 3 and is fixedly connected to the end portion of the large-diameter section 111 of the oil hole 11, one end of the spring 4 abuts against the end cover 3, the other end of the spring abuts against the valve core 2, the valve core 2 comprises a valve rod 21 and a valve body 22, the valve body 22 penetrates through the middle-diameter section 112, the end portion of the valve body is conical and abuts against the orifice of the small-diameter.
Referring to fig. 1, a radial sealing groove 5 is formed in the periphery of the valve body 1, and an O-ring 6 is installed in the sealing groove 5. The sealing effect is achieved after the external installation, the inner part of the overflow valve is propped against the hole opening of the small-diameter section 113 through the conical end part of the valve body 22 for sealing, and when the pressure value of hydraulic oil is lower than a standard value, the inner part and the outer part of the overflow valve are in a sealing state.
Referring to fig. 1, the end cap 3 is screwed to one end of the large diameter section 111 of the oil hole 11. Adopt threaded connection, guarantee the installation effectiveness, convenient the maintenance simultaneously, can be according to the degree of depth difference of end cover 3 screw in, adjust the initial compression volume of spring 4 to the pressure size that the overflow valve was opened can be controlled.
Referring to fig. 1, a boss 32 is provided on the end cap 3, one end of the spring 4 is sleeved on the boss 32, an outward radial abutment 24 is provided on the valve core 2, and the other end of the spring 4 abuts on the radial abutment 24. One end of the spring 4 is sleeved on the boss 32, and the other end of the spring 4 is sleeved on the valve rod 21 of the valve core 2, so that the position of the spring 4 after being installed is ensured not to deviate, and the spring does not deviate during movement.
Referring to fig. 1, the oil guide groove 23 of the valve body 22 has three trisections. The pressure relief speed can be improved.
Referring to fig. 1, a reaming section 17 connected to the small diameter section 113 is provided at the other end of the oil hole 11, the reaming section 17 is an oil inlet, the reaming section 17 has internal threads, and the valve body 1 is provided with internal threads on the periphery of the reaming section 17. The user can install valve body 1 with external screw thread or internal thread as required.
The working principle of the invention is as follows: referring to fig. 1, the selection of the spring 4 is matched with the pressure value of pressure relief required by the equipment, and the initial compression amount of the spring 4 can be adjusted according to different screwing depths of the end cover 3, so that the opening pressure of the overflow valve can be controlled. When the hydraulic oil pressure is lower than the standard value, the conical end of the valve body 22 abuts against the orifice of the small diameter section 113 to seal. When the pressure of the hydraulic oil at the hydraulic oil inlet of the valve body 1 is greater than the elastic force of the spring 4, the valve core 2 moves upwards, the hydraulic oil enters the oil hole 11 of the valve body 1 through the three oil guide grooves 23 on the excircle of the front end of the valve core 2, flows out of the first outflow hole 12 and the second outflow hole 31 on the end cover 3, and flows back into the oil tank, so that the pressure of the hydraulic oil is reduced, and the requirement of a specified pressure value is met. Meanwhile, as the pressure of the hydraulic oil at the hydraulic oil inlet is higher, the more the spring 4 is compressed, the larger the valve core 2 is opened upwards, the more the hydraulic oil flows back, and therefore the hydraulic oil overflow valve is used. The one-way hydraulic valve plays a role in sealing with an external connecting part through an O-shaped sealing ring 6 arranged in a sealing groove 5, and simultaneously isolates an oil inlet and an oil outlet.
When the valve core 2 is installed, the valve core 2 is firstly installed in the valve body 1, then the spring 4 is installed, the spring 4 is sleeved on the valve rod 21 of the valve core 2, then the end cover 3 is placed on the upper portion of the valve body 1, the boss 32 of the end cover 3 penetrates into the middle of the spring 4, then the end cover 3 is rotated to be assembled with the valve body 1, and thread glue is applied to the assembly position. An O-shaped sealing ring 6 is arranged in an axial groove 5 of the valve body 1, and the one-way hydraulic valve is connected and sealed with an external connecting part through an external thread and the O-shaped sealing ring 6, and simultaneously isolates an oil inlet and an oil outlet.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (6)
1. The utility model provides a miniature adjustable pressure hydraulic pressure overflow valve which characterized in that: including valve body (1), case (2), end cover (3) and spring (4), be equipped with fluid hole (11) on valve body (1), what fluid hole (11) diameter reduced gradually includes major diameter section (111), well footpath section (112) and path section (113), the side of valve body (1) has radial first effluvium (12), second effluvium (31) have on end cover (3), and fixed connection is in major diameter section (111) tip of fluid hole (11), the one end of spring (4) supports on end cover (3), the other end supports on case (2), case (2) include valve rod (21) and valve body (22), valve body (22) pass well footpath section (112), and the tip is the cone form, and support the drill way department at path section (113), the periphery of valve body (22) has axial oil guide groove (23).
2. The miniature pressure-adjustable hydraulic relief valve of claim 1, wherein: the periphery of the valve body (1) is provided with a radial sealing groove (5), and an O-shaped sealing ring (6) is arranged in the sealing groove (5).
3. The miniature pressure-adjustable hydraulic relief valve of claim 1, wherein: the end cover (3) is in threaded connection with one end of the large-diameter section (111) of the oil hole (11).
4. The miniature pressure-adjustable hydraulic relief valve of claim 1, wherein: the end cover (3) is provided with a boss (32), one end of the spring (4) is sleeved on the boss (32), the valve core (2) is provided with an outward radial stopping table (24), and the other end of the spring (4) is stopped on the radial stopping table (24).
5. The miniature pressure-adjustable hydraulic relief valve of claim 1, wherein: the oil guide groove (23) of the valve body (22) is provided with three trisected oil grooves.
6. The miniature pressure-adjustable hydraulic relief valve of claim 1, wherein: be equipped with reaming section (17) that link to each other with minor diameter section (113) on oil hole (11) the other end, reaming section (17) are the fluid entry, and reaming section (17) have the internal thread, and the periphery that valve body 1 is located reaming section (17) department is equipped with the internal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010744898.9A CN111810482A (en) | 2020-07-29 | 2020-07-29 | Miniature pressure-adjustable hydraulic overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010744898.9A CN111810482A (en) | 2020-07-29 | 2020-07-29 | Miniature pressure-adjustable hydraulic overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111810482A true CN111810482A (en) | 2020-10-23 |
Family
ID=72864319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010744898.9A Pending CN111810482A (en) | 2020-07-29 | 2020-07-29 | Miniature pressure-adjustable hydraulic overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111810482A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5058626A (en) * | 1988-09-14 | 1991-10-22 | Honda Giken Kogyo Kabushiki Kaisha | Hydraulic pressure control valve |
| CN2551830Y (en) * | 2002-05-28 | 2003-05-21 | 陈建兴 | Automatic liquid draining valve for pipeline |
| DE202006009403U1 (en) * | 2006-06-14 | 2006-08-17 | Marco Systemanalyse Und Entwicklung Gmbh | Pressure limiting valve e.g. for hydraulic systems, has body in which piston is adjustable in axial direction against pressure of compression spring and flow channel arranged in body has tap in rigid connection |
| CN103291679A (en) * | 2013-06-04 | 2013-09-11 | 浙江大学 | Low-hysteresis overflow valve |
| CN111075625A (en) * | 2019-12-31 | 2020-04-28 | 南岳电控（衡阳）工业技术股份有限公司 | Overflow valve with two-stage opening pressure to control flow |
-
2020
- 2020-07-29 CN CN202010744898.9A patent/CN111810482A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5058626A (en) * | 1988-09-14 | 1991-10-22 | Honda Giken Kogyo Kabushiki Kaisha | Hydraulic pressure control valve |
| CN2551830Y (en) * | 2002-05-28 | 2003-05-21 | 陈建兴 | Automatic liquid draining valve for pipeline |
| DE202006009403U1 (en) * | 2006-06-14 | 2006-08-17 | Marco Systemanalyse Und Entwicklung Gmbh | Pressure limiting valve e.g. for hydraulic systems, has body in which piston is adjustable in axial direction against pressure of compression spring and flow channel arranged in body has tap in rigid connection |
| CN103291679A (en) * | 2013-06-04 | 2013-09-11 | 浙江大学 | Low-hysteresis overflow valve |
| CN111075625A (en) * | 2019-12-31 | 2020-04-28 | 南岳电控（衡阳）工业技术股份有限公司 | Overflow valve with two-stage opening pressure to control flow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201023 |
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| RJ01 | Rejection of invention patent application after publication |