CN105422933B - A kind of safety valve of double work mode - Google Patents
A kind of safety valve of double work mode Download PDFInfo
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- CN105422933B CN105422933B CN201510960475.XA CN201510960475A CN105422933B CN 105422933 B CN105422933 B CN 105422933B CN 201510960475 A CN201510960475 A CN 201510960475A CN 105422933 B CN105422933 B CN 105422933B
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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
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention belongs to Hydraulic design techniques, are related to a kind of safety valve structure with automatically and manually double work mode.It is characterized in that：It is made up of housing (1), poppet (2), spring base (3), spring (4), guide pin bushing (5), guide pin bushing inner seal ring (6), guide pin bushing exterior seal ring (7), connecting rod (8), back-up ring (9), torsion spring (10), screw plug (11), pin (12), pivoted housing (13) and outer cover (14).The invention provides a kind of safety valve structure with automatically and manually double work mode, can be debugged on ground, examination phase, easily carry out manual pressure release, shortens ground debugging, checks the cycle of work, improves operating efficiency, reduce energy resource consumption.
Description
Technical field
The invention belongs to Hydraulic design techniques, are related to a kind of safety valve structure with automatically and manually double work mode.
Background technology
Safety valve mainly plays overload protection in hydraulic system, can eliminate shadow of the surge to hydraulic system
Ring, and can reduces the destruction to plant equipment.Existing safety valve typically divides high-pressure safety valve and low-pressure safety valve, is in system work
During work, more than pressure release is automatically turned on as defined in system during threshold pressure.Its shortcoming is：A kind of only Working mould of releasing pressure automatically
Formula.But in ground debugging, examination phase, it is often necessary to discharge pressure temporarily, can not now be realized and let out by this safety valve
Pressure, can only be completed by system decompression, extended ground debugging, checked the cycle of work, reduce operating efficiency, add
Energy resource consumption.
The content of the invention
The purpose of the present invention is：A kind of safety valve structure with automatically and manually double work mode is provided, so as on ground
Face debugging, examination phase, easily carry out manual pressure release, shorten ground debugging, check the cycle of work, improve operating efficiency,
Reduce energy resource consumption.
The technical scheme is that：A kind of safety valve of double work mode, it is characterised in that：It is by housing 1, poppet
2nd, spring base 3, spring 4, guide pin bushing 5, guide pin bushing inner seal ring 6, guide pin bushing exterior seal ring 7, connecting rod 8, back-up ring 9, torsion spring 10, screw plug 11,
Pin 12, pivoted housing 13 and outer cover 14 form；Housing 1 is the cylinder for having Step Shaft profile, and the stage casing 1f of housing 1 external diameter is big
In left section of 1e external diameter and right section of 1g external diameter, the endoporus of housing 1 is from left to right divided into 6 sections, is respectively：Oil-feed section 1a, valve
Seat section 1b, poppet construction section 1d, the 1st thread segment 1h, unthreaded hole section 1i and the 2nd thread segment 1j, oil-feed section 1a aperture, which are more than, lives
Gate seat section 1b aperture, poppet construction section 1d aperture are more than valve base section 1b aperture, the 1st thread segment 1h core diameter of thread
Less than poppet construction section 1d aperture, unthreaded hole section 1i aperture is more than the 1st thread segment 1h core diameter of thread, the 2nd thread segment 1j
The core diameter of thread be more than unthreaded hole section 1i aperture, it is having that at least two is uniformly distributed along the circumference on 1 left section of 1e of housing external cylindrical surface,
The outage 1c of insertion, there is a housing blind hole 1k for being used to place torsion spring termination in the right side of housing 1；
Poppet 2 has the profile of Step Shaft, and left section of external diameter of poppet 2 is more than right section of external diameter, in the left end of poppet 2
There is a cylindrical boss at face center, and the cylindrical boss forms poppet valve, external diameter and the endoporus of housing 1 of poppet valve
Middle valve base section 1b bore clearance coordinates, and the left end of poppet valve is sphere, and poppet 2 is located at the lifting of the endoporus of housing 1
In valve construction section 1d, in the poppet valve insertion valve base section 1b of poppet 2, the sphere and valve base section 1b of poppet valve
The interior conical surface forms valve mechanism；Spring base 3 is the cylinder that left end carries convex shoulder, and spring base 3 is enclosed on outside right section of poppet 2
Face, the left side of spring base 3 are bonded with the step end face of poppet 2, and the right-hand member of spring base 3 carries inner flange；Guide pin bushing 5 is that have
The cylinder of Step Shaft profile, left section of guide pin bushing 5 is thread segment 5d, and right section of guide pin bushing 5 is optical axis section 5e, in the cylindrical of optical axis section 5e
There is guide pin bushing external seal groove 5f on cylinder, guide pin bushing exterior seal ring 7 is located in guide pin bushing external seal groove 5f；The endoporus of guide pin bushing 5 is from left to right
It is divided into 3 sections, is respectively：Left sector hole 5a, middle hole 5b and right sector hole 5g, middle hole 5b aperture less than left sector hole 5a aperture and
, there is guide pin bushing interior sealing groove 5c in right sector hole 5g aperture on middle hole 5b inner cylinder face, and guide pin bushing inner seal ring 6 is located in guide pin bushing
In seal groove 5c；The thread segment 5d of guide pin bushing 5 is screwed in the 1st thread segment 1h of housing 1, and the right-hand member of spring base 3 enters the endoporus of guide pin bushing 5
Left sector hole 5a in, spring 4 is enclosed on the outside of spring base 3, and the left end of spring 4 withstands the right side of the convex shoulder of spring base 3, spring 4
Right-hand member withstand the left side of guide pin bushing 5, the optical axis section 5e of guide pin bushing 5 is located in the unthreaded hole section 1i of the endoporus of housing 1 and keeps gap to match somebody with somebody
Close；
Pivoted housing 13 is a cylinder, and the left side of the external cylindrical surface of pivoted housing 13 is external thread section, and the right is optical axis section, pivoted housing 13
Endoporus is 2 grades of stepped holes, and the stage casing sector hole footpath of 2 grades of stepped holes is less than right sector hole footpath, the endoporus of pivoted housing 13 more than left section of sector hole footpath
Middle hole be screwed hole；The external thread section of pivoted housing 13 is screwed into the 2nd thread segment 1j of the endoporus of housing 1, in the optical axis of pivoted housing 13
There is a pivoted housing blind hole for being used to place torsion spring termination in section, torsion spring 10 is enclosed in the optical axis section of pivoted housing 13, the left end of torsion spring 10
In head insertion housing blind hole 1k, in the right end insertion pivoted housing blind hole of torsion spring 10, in the optical axis section of pivoted housing 13 and in pivoted housing 13
There is a pivoted housing pin-and-hole radially penetrated position corresponding to the right sector hole in hole；Outer cover 14 is that a left port is opened wide, right output port is sealed
The cylinder closed, there is a circular groove in the bottom hole of the endoporus of outer cover 14, and outer cover 14 is located at the outside of pivoted housing 13, the right side of pivoted housing 13
End enters in above-mentioned circular groove, there is an outer cover pin-and-hole radially penetrated on the external cylindrical surface of outer cover 14, and pin 12 is located at
In pivoted housing pin-and-hole and outer cover pin-and-hole and keep being interference fitted, pivoted housing 13 and outer cover 14 are connected as entirety, right section of 1g of housing 1 is inserted
In the left port for entering outer cover 14；
Connecting rod 8 is the cylinder axis that left end carries connecting rod convex shoulder, and connecting rod 8 passes through the centre bore of the right-hand member inner flange of spring base 3, led
The middle hole 5b of 5 endoporus and the left sector hole of the endoporus of pivoted housing 13 are covered, the connecting rod convex shoulder of connecting rod 8 is located in the endoporus of spring base 3, with bullet
The right-hand member inner flange left side of spring abutment 3 is bonded, and the right-hand member of connecting rod 8 is put in the mid-section threads hole of the endoporus of pivoted housing 13, close in connecting rod 8
There is a connecting rod annular groove position of right-hand member, and the back-up ring 9 being combined to form by two semi-rings is located in above-mentioned connecting rod annular groove, back-up ring
9 external diameter is more than the aperture of the left sector hole of the endoporus of pivoted housing 13；
Screw plug 11 carries external screw thread, there is a blind round hole on the left side of screw plug 11, and screw plug 11 is screwed into pivoted housing 13
In the mid-section threads hole in hole, back-up ring 9 enters in the blind round hole of screw plug 11, and right side and the blind round hole of connecting rod 8 obtain bottom hole patch
Close, the annular end face between the left side sector hole left with the endoporus of pivoted housing 13 of back-up ring 9 and mid-section threads hole is bonded；
When torsion spring 10 is in free state, the valve of the conical surface composition in the sphere and valve base section 1b of poppet valve
Mechanism is closed；When rotating counterclockwise outer cover 14 and reaching predetermined angular, connecting rod 8 moves right pre- with flexible spring seat 3
Fixed distance, the valve mechanism that the conical surface in the sphere and valve base section 1b of poppet valve is formed are changed into open mode.
Beneficial effects of the present invention：A kind of safety valve structure with automatically and manually double work mode is provided, can be
Ground debugging, examination phase, easily carry out manual pressure release, shorten ground debugging, check the cycle of work, improve work
Efficiency, reduce energy resource consumption.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of housing in the present invention.
Fig. 3 is the structural representation of guide pin bushing in the present invention.
Embodiment
The present invention will be further described below.Referring to Fig. 1 to Fig. 3, a kind of safety valve of double work mode, its feature exists
In：It is by housing 1, poppet 2, spring base 3, spring 4, guide pin bushing 5, guide pin bushing inner seal ring 6, guide pin bushing exterior seal ring 7, connecting rod 8, gear
Circle 9, torsion spring 10, screw plug 11, pin 12, pivoted housing 13 and outer cover 14 form；
Housing 1 is the cylinder for having Step Shaft profile, the stage casing 1f of housing 1 external diameter be more than left section of 1e external diameter and right section
1g external diameter, the endoporus of housing 1 are from left to right divided into 6 sections, are respectively：Oil-feed section 1a, valve base section 1b, poppet construction section
1d, the 1st thread segment 1h, unthreaded hole section 1i and the 2nd thread segment 1j, oil-feed section 1a aperture are more than valve base section 1b aperture, lifting
Valve construction section 1d aperture is more than valve base section 1b aperture, and the 1st thread segment 1h core diameter of thread is less than poppet construction section 1d
Aperture, unthreaded hole section 1i aperture is more than the 1st thread segment 1h core diameter of thread, and the 2nd thread segment 1j core diameter of thread is more than unthreaded hole
Section 1i aperture, there is outage 1c that at least two is uniformly distributed along the circumference, penetrating on 1 left section of 1e of housing external cylindrical surface, in shell
There is a housing blind hole 1k for being used to place torsion spring termination the right side of body 1；
Poppet 2 has the profile of Step Shaft, and left section of external diameter of poppet 2 is more than right section of external diameter, in the left end of poppet 2
There is a cylindrical boss at face center, and the cylindrical boss forms poppet valve, external diameter and the endoporus of housing 1 of poppet valve
Middle valve base section 1b bore clearance coordinates, and the left end of poppet valve is sphere, and poppet 2 is located at the lifting of the endoporus of housing 1
In valve construction section 1d, in the poppet valve insertion valve base section 1b of poppet 2, the sphere and valve base section 1b of poppet valve
The interior conical surface forms valve mechanism；Spring base 3 is the cylinder that left end carries convex shoulder, and spring base 3 is enclosed on outside right section of poppet 2
Face, the left side of spring base 3 are bonded with the step end face of poppet 2, and the right-hand member of spring base 3 carries inner flange；Guide pin bushing 5 is that have
The cylinder of Step Shaft profile, left section of guide pin bushing 5 is thread segment 5d, and right section of guide pin bushing 5 is optical axis section 5e, in the cylindrical of optical axis section 5e
There is guide pin bushing external seal groove 5f on cylinder, guide pin bushing exterior seal ring 7 is located in guide pin bushing external seal groove 5f；The endoporus of guide pin bushing 5 is from left to right
It is divided into 3 sections, is respectively：Left sector hole 5a, middle hole 5b and right sector hole 5g, middle hole 5b aperture less than left sector hole 5a aperture and
, there is guide pin bushing interior sealing groove 5c in right sector hole 5g aperture on middle hole 5b inner cylinder face, and guide pin bushing inner seal ring 6 is located in guide pin bushing
In seal groove 5c；The thread segment 5d of guide pin bushing 5 is screwed in the 1st thread segment 1h of housing 1, and the right-hand member of spring base 3 enters the endoporus of guide pin bushing 5
Left sector hole 5a in, spring 4 is enclosed on the outside of spring base 3, and the left end of spring 4 withstands the right side of the convex shoulder of spring base 3, spring 4
Right-hand member withstand the left side of guide pin bushing 5, the optical axis section 5e of guide pin bushing 5 is located in the unthreaded hole section 1i of the endoporus of housing 1 and keeps gap to match somebody with somebody
Close；
Pivoted housing 13 is a cylinder, and the left side of the external cylindrical surface of pivoted housing 13 is external thread section, and the right is optical axis section, pivoted housing 13
Endoporus is 2 grades of stepped holes, and the stage casing sector hole footpath of 2 grades of stepped holes is less than right sector hole footpath, the endoporus of pivoted housing 13 more than left section of sector hole footpath
Middle hole be screwed hole；The external thread section of pivoted housing 13 is screwed into the 2nd thread segment 1j of the endoporus of housing 1, in the optical axis of pivoted housing 13
There is a pivoted housing blind hole for being used to place torsion spring termination in section, torsion spring 10 is enclosed in the optical axis section of pivoted housing 13, the left end of torsion spring 10
In head insertion housing blind hole 1k, in the right end insertion pivoted housing blind hole of torsion spring 10, in the optical axis section of pivoted housing 13 and in pivoted housing 13
There is a pivoted housing pin-and-hole radially penetrated position corresponding to the right sector hole in hole；Outer cover 14 is that a left port is opened wide, right output port is sealed
The cylinder closed, there is a circular groove in the bottom hole of the endoporus of outer cover 14, and outer cover 14 is located at the outside of pivoted housing 13, the right side of pivoted housing 13
End enters in above-mentioned circular groove, there is an outer cover pin-and-hole radially penetrated on the external cylindrical surface of outer cover 14, and pin 12 is located at
In pivoted housing pin-and-hole and outer cover pin-and-hole and keep being interference fitted, pivoted housing 13 and outer cover 14 are connected as entirety, right section of 1g of housing 1 is inserted
In the left port for entering outer cover 14；
Connecting rod 8 is the cylinder axis that left end carries connecting rod convex shoulder, and connecting rod 8 passes through the centre bore of the right-hand member inner flange of spring base 3, led
The middle hole 5b of 5 endoporus and the left sector hole of the endoporus of pivoted housing 13 are covered, the connecting rod convex shoulder of connecting rod 8 is located in the endoporus of spring base 3, with bullet
The right-hand member inner flange left side of spring abutment 3 is bonded, and the right-hand member of connecting rod 8 is put in the mid-section threads hole of the endoporus of pivoted housing 13, close in connecting rod 8
There is a connecting rod annular groove position of right-hand member, and the back-up ring 9 being combined to form by two semi-rings is located in above-mentioned connecting rod annular groove, back-up ring
9 external diameter is more than the aperture of the left sector hole of the endoporus of pivoted housing 13；
Screw plug 11 carries external screw thread, there is a blind round hole on the left side of screw plug 11, and screw plug 11 is screwed into pivoted housing 13
In the mid-section threads hole in hole, back-up ring 9 enters in the blind round hole of screw plug 11, and right side and the blind round hole of connecting rod 8 obtain bottom hole patch
Close, the annular end face between the left side sector hole left with the endoporus of pivoted housing 13 of back-up ring 9 and mid-section threads hole is bonded；
When torsion spring 10 is in free state, the valve of the conical surface composition in the sphere and valve base section 1b of poppet valve
Mechanism is closed；When rotating counterclockwise outer cover 14 and reaching predetermined angular, connecting rod 8 moves right pre- with flexible spring seat 3
Fixed distance, the valve mechanism that the conical surface in the sphere and valve base section 1b of poppet valve is formed are changed into open mode.
The present invention operation principle be：Referring to Fig. 1, it is a kind of safety valve structure signal of double work mode of the present invention
Figure.The safety valve has two kinds of operation modes.
Releasing pressure automatically mode：When the hydraulic oil pressure force value of the oil inlet 1a by housing 1 exceedes setting, spring 3 is overcome
Elastic force, poppet 2 moves right, the valve that the conical surface in the sphere of the valve of poppet 2 and the valve base section 1b of housing 1 is formed
Mechanism is changed into open mode, and push the spring seat 4 moves right, and pressure oil flows out from the oil return opening 1c of housing 1, pressure release；When
Hydraulic fluid pressure reduces, and poppet 2 is in the presence of the reset force of spring 3 to left movement, the sphere and housing 1 of the valve of poppet 2
Valve base section 1b in the conical surface form valve mechanism be closed, pressure release terminates.
Manual pressure release mode：When hydraulic system needs any pressure of release system in ground debugging, examination phase, the inverse time
When pin Rotating outer 14 reaches predetermined angular, pivoted housing 13 rotates motion with housing 1, by screw plug 11 (by screw thread with turning
The connection of set 13) moved right with the drivening rod 8 of back-up ring 9, while pull spring base 4 to move right, now poppet 2 is in hydraulic coupling
In the presence of move right, the valve mechanism that the conical surface in the sphere of the valve of poppet 2 and the valve base section 1b of housing 1 is formed becomes
For open mode, pressure oil flows out from the oil return opening 1c of housing 1, pressure release；Outer cover 14 is unclamped, pivoted housing 13 is answered torsion spring 10
Returned under the power of position, spring base 3 and poppet 2 in the presence of the reset force of spring 4 to left movement, the sphere of the valve of poppet 2 and
The valve mechanism that the conical surface in the valve base section 1b of housing 1 is formed is closed, and pressure release terminates.
The safety valve structure integrates automatic release of pressure and manual release of pressure both modalities which, has both realized hydraulic work system shape
The automatic release of pressure function of state, facilitates the ground maintenance of hydraulic system again.
Claims (1)
1. a kind of safety valve of double work mode, including housing (1), poppet (2), spring (4), guide pin bushing (5), guide pin bushing interior sealing
Enclose (6), guide pin bushing exterior seal ring (7), connecting rod (8) and pivoted housing (13)；It is characterized in that：Also include spring base (3), back-up ring (9), turn round
Spring (10), screw plug (11), pin (12) and outer cover (14)；
Housing (1) is the cylinder for having Step Shaft profile, the external diameter of the external diameter more than left section (1e) in the stage casing (1f) of housing (1) and
The external diameter of right section (1g), the endoporus of housing (1) are from left to right divided into 6 sections, are respectively：Oil-feed section (1a), valve base section (1b), carry
Lift valve construction section (1d), the 1st thread segment (1h), unthreaded hole section (1i) and the 2nd thread segment (1j), the aperture of oil-feed section (1a), which is more than, lives
The aperture of gate seat section (1b), the aperture of poppet construction section (1d) are more than the aperture of valve base section (1b), the 1st thread segment (1h)
The core diameter of thread is less than the aperture of poppet construction section (1d), and the aperture of unthreaded hole section (1i) is more than the screw thread bottom of the 1st thread segment (1h)
Footpath, the core diameter of thread of the 2nd thread segment (1j) is more than the aperture of unthreaded hole section (1i), on housing (1) left section (1e) external cylindrical surface
There is outage (1c) that at least two is uniformly distributed along the circumference, penetrating, there is one to be used to place torsion spring end in the right side of housing (1)
The housing blind hole (1k) of head；
Poppet (2) has the profile of Step Shaft, and left section of external diameter of poppet (2) is more than right section of external diameter, on a left side for poppet (2)
End face center has a cylindrical boss, and the cylindrical boss forms poppet valve, external diameter and the housing (1) of poppet valve
The bore clearance of valve base section (1b) coordinates in endoporus, and the left end of poppet valve is sphere, and poppet (2) is located at housing (1)
In the poppet construction section (1d) of endoporus, in the poppet valve insertion valve base section (1b) of poppet (2), poppet valve
The conical surface in sphere and valve base section (1b) forms valve mechanism；Spring base (3) be left end carry convex shoulder cylinder, spring base
(3) right section of outside of poppet (2) is enclosed on, the left side of spring base (3) is bonded with the step end face of poppet (2), spring base
(3) right-hand member carries inner flange；Guide pin bushing (5) is the cylinder for having Step Shaft profile, and left section of guide pin bushing (5) is thread segment (5d),
Right section of guide pin bushing (5) is optical axis section (5e), there is guide pin bushing external seal groove (5f) on optical axis section (5e) external cylindrical surface, close outside guide pin bushing
Seal (7) is located in guide pin bushing external seal groove (5f)；The endoporus of guide pin bushing (5) is from left to right divided into 3 sections, is respectively：Left sector hole (5a),
Middle hole (5b) and right sector hole (5g), the aperture of middle hole (5b) are less than the aperture of left sector hole (5a) and the hole of right sector hole (5g)
, there is guide pin bushing interior sealing groove (5c) in footpath on middle hole (5b) inner cylinder face, and guide pin bushing inner seal ring (6) is located at guide pin bushing interior sealing groove
In (5c)；The thread segment (5d) of guide pin bushing (5) is screwed in the 1st thread segment (1h) of housing (1), and the right-hand member of spring base (3), which enters, leads
In the left sector hole (5a) for covering (5) endoporus, spring (4) is enclosed on the outside of spring base (3), and the left end of spring (4) withstands spring base (3)
The right side of convex shoulder, the right-hand member of spring (4) withstand the left side of guide pin bushing (5), and the optical axis section (5e) of guide pin bushing (5) is located at housing (1)
In the unthreaded hole section (1i) of endoporus and gap is kept to coordinate；
Pivoted housing (13) is a cylinder, and the left side of pivoted housing (13) external cylindrical surface is external thread section, and the right is optical axis section, pivoted housing (13)
Endoporus be 2 grades of stepped holes, the stage casing sector hole footpath of 2 grades of stepped holes is less than right sector hole footpath, pivoted housing (13) more than left section of sector hole footpath
The middle hole of endoporus is screwed hole；The external thread section of pivoted housing (13) is screwed into the 2nd thread segment (1j) of housing (1) endoporus, is being turned
Covering has a pivoted housing blind hole for being used to place torsion spring termination in the optical axis section of (13), torsion spring (10) is enclosed on the optical axis section of pivoted housing (13)
On, in the left end insertion housing blind hole (1k) of torsion spring (10), in right end insertion pivoted housing (13) blind hole of torsion spring (10), turning
Cover in the optical axis section of (13), there is a pivoted housing pin-and-hole radially penetrated position corresponding with the right sector hole of pivoted housing (13) endoporus；Outside
Cover (14) is the cylinder that a left port is opened wide, right output port is closed, and has a circular groove in the bottom hole of outer cover (14) endoporus,
Outer cover (14) is located at the outside of pivoted housing (13), and the right-hand member of pivoted housing (13) enters in above-mentioned circular groove, in the cylindrical of outer cover (14)
There is an outer cover pin-and-hole radially penetrated on cylinder, pin (12) is located in pivoted housing pin-and-hole and outer cover pin-and-hole and keeps interference to match somebody with somebody
Close, pivoted housing (13) and outer cover (14) are connected as entirety, the left port of right section (1g) the insertion outer cover (14) of housing (1) is interior and protects
Hold and be freely rotatably assorted；
Connecting rod (8) be left end carry connecting rod convex shoulder cylinder axis, connecting rod (8) through spring base (3) right-hand member inner flange centre bore,
The middle hole (5b) of guide pin bushing (5) endoporus and the left sector hole of pivoted housing (13) endoporus, the connecting rod convex shoulder of connecting rod (8) are located at spring base (3)
Endoporus in, be bonded with spring base (3) right-hand member inner flange left side, the right-hand member of connecting rod (8) puts in the stage casing of pivoted housing (13) endoporus
In screwed hole, there are a connecting rod annular groove, the back-up ring being combined to form by two semi-rings (9) close to the position of right-hand member in connecting rod (8)
In above-mentioned connecting rod annular groove, the external diameter of back-up ring (9) is more than the aperture of the left sector hole of pivoted housing (13) endoporus；
Screw plug (11) carries external screw thread, there is a blind round hole on the left side of screw plug (11), and screw plug (11) is screwed into pivoted housing
(13) in the mid-section threads hole of endoporus, back-up ring (9) enters in the blind round hole of screw plug (11), right side and the circle of connecting rod (8)
The bottom hole fitting of blind hole, the annular end face between the left side and the left sector hole of pivoted housing (13) endoporus and mid-section threads hole of back-up ring (9)
Fitting；
When torsion spring (10) is in free state, the valve of the conical surface composition in the sphere and valve base section (1b) of poppet valve
Mechanism is closed；When rotating counterclockwise outer cover (14) and reaching predetermined angular, connecting rod (8) band flexible spring seat (3) is to the right
Move predetermined distance, the valve mechanism that the conical surface in the sphere and valve base section (1b) of poppet valve is formed is changed into open shape
State.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510960475.XA CN105422933B (en) | 2015-12-21 | 2015-12-21 | A kind of safety valve of double work mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510960475.XA CN105422933B (en) | 2015-12-21 | 2015-12-21 | A kind of safety valve of double work mode |
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| Publication Number | Publication Date |
|---|---|
| CN105422933A CN105422933A (en) | 2016-03-23 |
| CN105422933B true CN105422933B (en) | 2017-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510960475.XA Active CN105422933B (en) | 2015-12-21 | 2015-12-21 | A kind of safety valve of double work mode |
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| CN106672244B (en) * | 2016-12-12 | 2018-11-30 | 中国航空救生研究所 | A kind of spring firing lock |
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| WO1985002893A1 (en) * | 1983-12-27 | 1985-07-04 | Caterpillar Tractor Co. | Compression relief |
| CN2465013Y (en) * | 2001-02-16 | 2001-12-12 | 联创企业有限公司 | Pressure-releasing valve with pressure regulation |
| US6659420B2 (en) * | 2002-03-21 | 2003-12-09 | Tsang-Chang Hwang | Manual and automatic flow control valve |
| US20110048554A1 (en) * | 2008-05-09 | 2011-03-03 | Finstad Eric J | Sprayer pressure relief valve |
| CN201531660U (en) * | 2009-04-04 | 2010-07-21 | 黄伟丰 | Multi-functional safety valve for water distributor |
| CN204164444U (en) * | 2014-08-19 | 2015-02-18 | 中国广核集团有限公司 | Pressurized-water reactor nuclear power plant nuclear island reduction valve |
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2015
- 2015-12-21 CN CN201510960475.XA patent/CN105422933B/en active Active
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