CN203948365U - Double linked one-way valve - Google Patents
Double linked one-way valve Download PDFInfo
- Publication number
- CN203948365U CN203948365U CN201420395243.5U CN201420395243U CN203948365U CN 203948365 U CN203948365 U CN 203948365U CN 201420395243 U CN201420395243 U CN 201420395243U CN 203948365 U CN203948365 U CN 203948365U
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- CN
- China
- Prior art keywords
- spool
- valve body
- way valve
- double linked
- pod apertures
- 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.)
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Abstract
A kind of double linked one-way valve.Solved the existing problem of little tonnage truck crane revolution clockwise and anticlockwise.It comprises valve body, in described valve body, be provided with axial hole, in described axial hole, be provided with successively the first spool and the second spool, on the first described spool and the second spool, be respectively equipped with the first Returnning spring and the second Returnning spring, the head of the first described spool is provided with through hole, the second described spool inserts in the through hole of the first spool and seals mutually with the first spool, the outer wall of the first spool head seals mutually with valve interior wall and axial limiting coordinates, and the first described spool and the head of the second spool are respectively equipped with the first pod apertures and the second pod apertures.The beneficial effects of the utility model are, two spools are set in valve body, by this double linked one-way valve energy two-way conducting that is arranged so that of through hole and pod apertures, according to the preloading spring power of the first Returnning spring and the second Returnning spring, control respectively the cracking pressure of two spools, thereby guarantee can normally use under logical oil and two kinds of different conditions of oil return.
Description
Technical field
The utility model relates to a kind of one-way valve, is specifically related to a kind of double linked one-way valve.
Background technique
One-way valve claims again safety check or check valve, is that fluid can only be along inlet flow, and the device that outlet medium but cannot reflux, prevents oil stream reverse flow for hydraulic system, or prevent pressurized air reverse flow for pneumatic system.Pilot operated check valve is to rely on to control hydrodynamic pressure, can make the valve of one-way valve reverse circulated.This valve occupies compared with consequence in the hydraulic prop equipment of coal mine machinery.Pilot operated check valve and the common one-way valve difference oil circuit control K that has been many, when oil circuit control access failure pressure oil liquid, Pilot operated check valve is worked as common one-way valve, and pressure oil only flows to oil outlet from filler opening, can not reverse flow.When the input of oil circuit control oil pilot pressure, piston mandril moves right under pressure oil effect, with push rod, backs down one-way valve, and oil inlet and outlet is connected, if oil outlet is greater than filler opening, just can make fluid reverse flow.But there is following shortcoming in Pilot operated check valve: must guarantee that Pilot operated check valve has enough pilot pressures 1., absolutely not allow pilot pressure decompression, and to notice whether pilot pressure meets the requirement of oppositely opening,, in order to avoid there is the misoperation of Pilot operated check valve in the impact of the variation that the simultaneously control of Pilot operated check valve will be analyzed main system pressure on oil circuit control pressure; 2. the position in hydraulic system or oppositely go out liquid flowing resistance (back pressure) size after oil pocket, the structure of choose reasonable Pilot operated check valve (skeleton symbol or compound) and draining mode (inside let out or leak) according to Pilot operated check valve.For internal drainage type Pilot operated check valve, when reverse oil outlet pressure surpasses certain value, hydraulic control part, by effect out of hand, oppositely goes out oil pocket without back pressure or the less occasion of back pressure therefore internal drainage type Pilot operated check valve is generally used for; And the formula Pilot operated check valve of leaking can be used for the higher occasion of reverse fuel-displaced back lining pressure, to reduce minimum pilot pressure, save power ratio control.If system adopts internal drainage type, plunger case will intermittently decline and send vibration and noise.3. complex structure, cost of production is higher.
In the Hydraulic slewing system of little tonnage truck crane, the pilot pressure of opening of trainstop is 6-19bar, is originally by turning round the back pressure of controlling the restriction effect of multi-way valve and producing and opens trainstop; Be subject to the impact of the factors such as oil liquid temperature, oil viscosity, flow, this economy is larger, sometimes even makes trainstop in semi-closed state, produces revolution jitter phenomenon; Made into be afterwards combined into double linked one-way valve by the pattern of two one-way valve reverse parallel connections, then be connected on the actuator port of revolution control multi-way valve, but such composite structure makes system architecture complicated, institute takes up space large; With double linked one-way valve, make oil return produce a stable pressure, be not subject to the impact of the factors such as oil liquid temperature, oil viscosity, flow, can not produce break semi-closed state, can not cause the phenomenons such as revolution shake, make revolution more stable; And the through-current capability of this integrated type double linked one-way valve is strong, the pressure loss of revolution oil-feed is little, the force value of revolution oil return is stable, and the double linked one-way valve of respectively connecting at the actuator port place of revolution control multi-way valve, has just solved existing problem in revolution clockwise and anticlockwise.
Summary of the invention
For solving the existing problem of the medium and small tonnage truck crane revolution clockwise and anticlockwise of background technique, the utility model provides a kind of double linked one-way valve.
The technical solution of the utility model is: a kind of double linked one-way valve, comprise valve body, in described valve body, be provided with axial hole, in described axial hole, be provided with successively the first spool and the second spool, on the first described spool and the second spool, be respectively equipped with the first Returnning spring and the second Returnning spring, the head of the first described spool is provided with through hole, the second described spool inserts in the through hole of the first spool and seals mutually with the first spool, the outer wall of the first spool head seals mutually with valve interior wall and axial limiting coordinates, the first described spool and the head of the second spool are respectively equipped with the first pod apertures and the second pod apertures.
As a kind of improvement of the present utility model, described valve interior wall is provided with boss, and the head of the first described spool is provided with first conical surface, and the first described spool coordinates with boss conical surface seal.
As further improvement of the utility model, described valve body is provided with for increasing the holding cavity of MEDIA FLOW flux at the first pod apertures place.
As further improvement of the utility model, the first described pod apertures has a plurality of, and is circumferentially arranged at the head of the first spool.
As further improvement of the utility model, the second described pod apertures has a plurality of, and is circumferentially arranged at the head of the second spool.
As further improvement of the utility model, described valve body one end is provided with valve gap, and described valve gap and valve body end face are provided with an ED circle.
As further improvement of the utility model, described valve gap is provided with seal groove, establishes the 2nd ED circle in described seal groove.
As further improvement of the utility model, one end of described the first Returnning spring and the first spool offset, and the other end and valve gap offset.
As further improvement of the utility model, described valve body is upwards provided with a plurality of gap slots in its footpath, and described gap slot is circumferentially distributed on the inwall of valve body.
The beneficial effects of the utility model are, two spools are set in valve body, by this double linked one-way valve energy two-way conducting that is arranged so that of through hole and pod apertures, according to the preloading spring power of the first Returnning spring and the second Returnning spring, control respectively the cracking pressure of two spools, thereby guarantee can normally use under logical oil and two kinds of different conditions of oil return, the utility model energy bidirectional open, and opening oil pressure can be different or identical, Applicable scope is wider, avoided the setting of the control oilhole of Pilot operated check valve, simplification has been lacked product structure and has been avoided revealing.The utility model also has simple in structure, compact; Processing, easy to assembly, seals the advantages such as reliable.
Accompanying drawing explanation
Accompanying drawing 1 is the utility model embodiment's structural representation.
Accompanying drawing 2 is the sectional view of accompanying drawing 1.
Accompanying drawing 3 is the right elevation of accompanying drawing 1.
Accompanying drawing 4 is the utility model embodiment hydraulic schematic diagram.
In figure, 1, valve body; 11, axial hole; 12, boss; 13, holding cavity; 14, gap slot; 2, the first spool; 21, through hole; 22, the first pod apertures; 23, first conical surface; 3, the second spool; 31, the second pod apertures; 32, second conical surface; 4, the first Returnning spring; 5, the second Returnning spring; 6, valve gap; 61, seal groove; 7, an ED circle; 8, the 2nd ED circle.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described further:
By Fig. 1 in conjunction with shown in Fig. 2,3,4, a kind of double linked one-way valve, comprise valve body 1, in described valve body 1, be provided with axial hole 11, in described axial hole 11, be provided with successively the first spool 2 and the second spool 3, on the first described spool 2 and the second spool 3, be respectively equipped with the first Returnning spring 4 and the second Returnning spring 5, specifically, first Returnning spring 4 one end and valve body 1 offset, and the other end and the first spool 2 offset; Second Returnning spring 5 one end and valve body 1 offset, and another first end and the second spool 3 offset; The head of the first described spool 2 is provided with through hole 21, described the second spool 3 inserts in the through hole 21 of the first spools 2 and seals mutually with the first spool 2, the outer wall of the first spool 2 heads seals mutually with valve body 1 inwall and axial limiting coordinates, and the first described spool 2 and the head of the second spool 3 are respectively equipped with the first pod apertures 22 and the second pod apertures 31.During normally (while referring to play same purpose with existing one-way valve), medium flows into the axial flow through hole of valve body from filler opening, and be full of the first spool, because the first spool seals mutually with valve body 1 and axial limiting coordinates, now medium compresses the second Returnning spring, make the second spool depart from the first spool, medium through the through hole of the first spool, the pod apertures of the second spool to oil outlet.In the time of oppositely, medium flows into and is full of the second spool from oil outlet, and now, the second spool overcomes the pretightening force of the first Returnning spring, the second spool drives the first spool together to move, and medium is discharged from filler opening through sealing surface, first pod apertures of the second pod apertures, the first spool and valve interior wall.Certainly in the utility model, different Returnning springs can be set as required, thereby regulate the cracking pressure of one-way valve.The beneficial effects of the utility model are, two spools are set in valve body, by this double linked one-way valve energy two-way conducting that is arranged so that of through hole and pod apertures, according to the preloading spring power of the first Returnning spring and the second Returnning spring, control respectively the cracking pressure of two spools, thereby guarantee can normally use under logical oil and two kinds of different conditions of oil return, the utility model energy bidirectional open, and opening oil pressure can be different or identical, Applicable scope is wider, avoided the setting of the control oilhole of Pilot operated check valve, simplification has been lacked product structure and has been avoided revealing.The utility model also has simple in structure, compact; Processing, easy to assembly, seals the advantages such as reliable.The utility model makes rotary system oil return produce a stable pressure for the Hydraulic slewing system of truck crane, be not subject to the impact of the factors such as oil liquid temperature, oil viscosity, flow, can not produce break semi-closed state, can not cause the phenomenons such as revolution shake, make revolution more stable; And the through-current capability of this integrated type double linked one-way valve is strong, the pressure loss of revolution oil-feed is little, and the force value of revolution oil return is stable.
Described valve body 1 inwall is provided with boss 12, and the head of the first described spool 2 is provided with first conical surface 23, and the first described spool 2 coordinates with boss 12 conical surface seals.Specifically, first conical surface 23 forms described conical surface seal with boss 12.In particular, the second described spool 3 is provided with second conical surface 32, and the second described spool 3 inserts in the through hole 21 of the first spool 2, and second conical surface and through hole form conical surface seal.Such sealing structure is reliable, also can make valve open more convenient simultaneously, is optimal way of the present utility model.In particular, the first described spool can be T font (in drawing, not providing), the transverse part of T font block mutually with boss and transverse part on the passage that is communicated with the first pod apertures and the second pod apertures is set, thereby realize the circulation of medium, the vertical portion of T font and the second spool offset and seal.Certainly the head of the second described spool can be also T font, and the transverse part of the second spool T font blocks mutually with the first spool, and insert in the through hole of the first spool vertical portion.
Described valve body 1 is provided with for increasing the holding cavity 13 of MEDIA FLOW flux at the first pod apertures 22 places.The motion of the first spool is convenient in the setting of holding cavity, the pressure loss in the time of can reducing medium circulation simultaneously.
The first described pod apertures 22 has a plurality of and is radial hole, and described a plurality of the first pod apertures are circumferentially arranged at the head of the first spool 2.Specifically, it is a plurality of and for radial hole that the second described pod apertures 31 has, described a plurality of the second pod apertures and be circumferentially arranged at the head of the second spool 3.In particular, described the first pod apertures and the second pod apertures are four, and are evenly arranged at respectively on the first spool and the second spool.A plurality of pod apertures can increase through-current capability, the pressure loss while reducing medium circulation.
Described valve body 1 one end is provided with valve gap 6, and described valve gap 6 is provided with an ED circle 7 with valve body 1 end face.Specifically, described valve gap 6 is provided with seal groove 61, establishes the 2nd ED circle 8 in described seal groove 61.In particular, first Returnning spring 4 one end offset with the valve gap 6 of being located on valve body 1, and the other end and the first spool 2 offset.With respect to the linear sealing of O shape circle, ED circle has been realized face sealing, and this elastomeric seal is used as axial static sealing, and it is constant that cross section under high pressure all almost keeps, and sealing effect is better.
One end of described the first Returnning spring 4 and the first spool 2 offset, and the other end and valve gap 6 offset.In particular, one end of the second Returnning spring and the second spool offset, and the other end and valve body offset.Certainly in the utility model, valve body two ends can arrange valve gap, and second Returnning spring one end and the second spool offset, and the other end and valve gap offset.Certainly, the utility model also can not arrange valve gap, and one end of the first Returnning spring offsets with the back-up ring of setting up or the first spool, and the other end and valve body offset.For needs easy to connect or real work occasion, can be chosen in valve body two ends increases by one, two valve gaps, and valve gap can certainly be set.
Described valve body 1 is upwards provided with a plurality of gap slots 14 in its footpath, described gap slot 14 is circumferentially distributed on the inwall of valve body 1.The setting of gap slot, increases the through-current capability of valve body, thereby reduces the pressure loss.In particular, also gap slot can be set on valve gap.
Every technician's notice: although the utility model describes according to above-mentioned embodiment; but invention thought of the present utility model is not limited in this model utility; the repacking of any utilization inventive concept, all will include in this patent scope of patent protection.
Claims (9)
1. a double linked one-way valve, comprise valve body (1), it is characterized in that: in described valve body (1), be provided with axial hole (11), in described axial hole (11), be provided with successively the first spool (2) and the second spool (3), on described the first spool (2) and the second spool (3), be respectively equipped with the first Returnning spring (4) and the second Returnning spring (5), the head of described the first spool (2) is provided with through hole (21), described the second spool (3) inserts in the through hole (21) of the first spool (2) and seals mutually with the first spool (2), the outer wall of the first spool (2) head seals mutually with valve body (1) inwall and axial limiting coordinates, described the first spool (2) and the head of the second spool (3) are respectively equipped with the first pod apertures (22) and the second pod apertures (31).
2. double linked one-way valve according to claim 1, it is characterized in that described valve body (1) inwall is provided with boss (12), the head of described the first spool (2) is provided with first conical surface (23), and described the first spool (2) coordinates with boss (12) conical surface seal.
3. double linked one-way valve according to claim 1, is characterized in that described valve body (1) locates to be provided with the holding cavity (13) for increasing MEDIA FLOW flux in the first pod apertures (22).
4. double linked one-way valve according to claim 1, is characterized in that described the first pod apertures (22) has a plurality of, and is circumferentially arranged at the head of the first spool (2).
5. double linked one-way valve according to claim 1, is characterized in that described the second pod apertures (31) has a plurality of, and is circumferentially arranged at the head of the second spool (3).
6. double linked one-way valve according to claim 1, is characterized in that described valve body (1) one end is provided with valve gap (6), and described valve gap (6) is provided with an ED circle (7) with valve body (1) end face.
7. double linked one-way valve according to claim 6, is characterized in that described valve gap (6) is provided with seal groove (61), establishes the 2nd ED circle (8) in described seal groove (61).
8. double linked one-way valve according to claim 6, is characterized in that one end of described the first Returnning spring (4) and the first spool (2) offset, and the other end and valve gap (6) offset.
9. double linked one-way valve according to claim 1, is characterized in that described valve body (1) is upwards provided with a plurality of gap slots (14) in its footpath, and described gap slot (14) is circumferentially distributed on the inwall of valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420395243.5U CN203948365U (en) | 2014-07-17 | 2014-07-17 | Double linked one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420395243.5U CN203948365U (en) | 2014-07-17 | 2014-07-17 | Double linked one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203948365U true CN203948365U (en) | 2014-11-19 |
Family
ID=51890402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420395243.5U Withdrawn - After Issue CN203948365U (en) | 2014-07-17 | 2014-07-17 | Double linked one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203948365U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047918A (en) * | 2014-07-17 | 2014-09-17 | 圣邦集团有限公司 | Duplex check valve |
-
2014
- 2014-07-17 CN CN201420395243.5U patent/CN203948365U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047918A (en) * | 2014-07-17 | 2014-09-17 | 圣邦集团有限公司 | Duplex check valve |
| CN104047918B (en) * | 2014-07-17 | 2016-02-24 | 圣邦集团有限公司 | Double linked one-way valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141119 Effective date of abandoning: 20160224 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |