CN107503785A - The core assembly of safety valve - Google Patents
The core assembly of safety valve Download PDFInfo
- Publication number
- CN107503785A CN107503785A CN201710856234.XA CN201710856234A CN107503785A CN 107503785 A CN107503785 A CN 107503785A CN 201710856234 A CN201710856234 A CN 201710856234A CN 107503785 A CN107503785 A CN 107503785A
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- Prior art keywords
- pass hole
- liquid
- liquid pass
- valve
- hole
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
Abstract
The invention discloses a kind of core assembly of safety valve, including valve body, the valve element being movably arranged, it is sheathed on the valve pocket on valve element and positioned at valve inner and is arranged at the inside of the valve body and the housing pin for playing position-limiting action to the valve element and valve pocket, valve element includes the liquid input section and guide section set gradually vertically, the overall diameter of liquid input section is more than the overall diameter of guide section, valve pocket is sheathed on liquid input section, housing pin is sheathed on guide section, liquid input section is provided with the first liquid pass hole being sequentially arranged vertically, second liquid pass hole, 3rd liquid pass hole and the 4th liquid pass hole.The core assembly of safety valve of the present invention, axial limiting is carried out to valve element by housing pin, position limiting structure on valve element is located at the inside of housing pin and is engaged with housing pin, so the wall thickness of the liquid input section of valve element is required to reduce, the inner chamber of the liquid input section of valve element can be set larger, so that the flow quantity excessively of core assembly is big, and then be advantageous to improve the draining flow of safety valve.
Description
Technical field
The invention belongs to coal mine fully-mechanized mining hydraulic support, and specifically, the present invention relates to a kind of valve element group of safety valve
Part.
Background technology
With the large-scale implementation and development of coal mine fully-mechanized mining hydraulic support, requirement of the working face to hydraulic support is also got over
Come stricter, thus have further requirement to the safety valve of protective cradle hydraulic jack, especially safety valve is made
Have with life and reliability and further require, when the pressure at the top of hydraulic support is caused by power, safety valve energy
It is no in the case where bearing high pressure, short time substantially stabilized off-load in time directly affects the service life and supporting peace of support
Entirely.It can not only damage seal, pipeline and Hydraulic Elements, but also can cause vibrations and noise；Sometimes some pressure controls are made
The Hydraulic Elements of system produce error.
The safety valve used at present, mainly including valve casing, valve body, valve element, valve pocket, back-moving spring, spring base and pressure regulation spiral shell
Silk.In valve casing contained spring chamber, it is that the other end is against on the voltage regulation screw being threadedly coupled that back-moving spring one end, which is against with valve casing,
On moveable spring base.Valve body inserts the valve casing other end and with valve casing to be threadedly coupled, and valve inner, which is provided with, to be used to accommodate valve
The cavity of set, valve element are located in valve pocket, and the end of valve element contacts with spring base, and safety valve is realized for the movement of push the spring seat
Open.
The overflow ducts of existing safety valve are to use the liquid pass hole around being arranged in valve element side wall, and liquid pass hole aperture is small,
Cause that the draining flow of safety valve is small, and flow loss is big, off-load ability.
The content of the invention
It is contemplated that at least solves one of technical problem present in prior art.Therefore, the present invention provides a kind of peace
The core assembly of full valve, it is therefore an objective to improved flow quantity.
To achieve these goals, the technical scheme taken of the present invention is：The core assembly of safety valve, including valve body, can
The mobile valve element set, it is sheathed on valve element and the valve pocket positioned at valve inner and is arranged at the inside of the valve body and is used for
The housing pin of position-limiting action is played to the valve element and valve pocket, valve element includes the liquid input section and guide section set gradually vertically,
The overall diameter of liquid input section is more than the overall diameter of guide section, and valve pocket is sheathed on liquid input section, and housing pin is sheathed on guide section, is entered
Liquid section is provided with the first liquid pass hole, the second liquid pass hole, the 3rd liquid pass hole and the 4th liquid pass hole being sequentially arranged vertically.
For the housing pin with the valve body to be threadedly coupled, housing pin is engaged with valve body clamps the valve pocket.
To be fixedly and coaxially connected, liquid input section is one end open, one end closing and inner hollow for the liquid input section and guide section
Cylinder, first liquid pass hole, the second liquid pass hole, the 3rd liquid pass hole and the 4th liquid pass hole be in the side wall of liquid input section edge
Extend radially through the circular hole of setting.
First liquid pass hole and second liquid pass hole close to the openend of the liquid input section, the 3rd liquid pass hole and
For 4th liquid pass hole close to the blind end of liquid input section, the first liquid pass hole and the second liquid pass hole are used for the liquid that will enter in valve element
The first unloading hole set on guiding to the valve pocket, the 3rd liquid pass hole and the 4th liquid pass hole are used for the liquid that will enter in valve element
The second unloading hole set on guiding to the housing pin, the first unloading hole connect with the first outage set on the valve body
Logical, the second unloading hole connects with the second outage set on the valve body.
Vertical range between first liquid pass hole and second liquid pass hole and the 3rd liquid pass hole and described the
Vertical range between four liquid pass holes is equal in magnitude, the first liquid pass hole, the second liquid pass hole, the 3rd liquid pass hole and the 4th liquid pass hole
Pore size is equal.
The inside of the liquid input section has the first admission chamber and the second admission chamber set gradually vertically, the first admission chamber
Diameter be more than the diameter of the second admission chamber, first liquid pass hole and second liquid pass hole are located at the radial direction of the first admission chamber
On, the 3rd liquid pass hole and the 4th liquid pass hole are located at the second admission chamber radially.
To be coaxially disposed, the length of the first admission chamber is less than the second feed liquor for first admission chamber and second admission chamber
The length of chamber.
A diameter of 11.2mm of first admission chamber, a diameter of 10.5mm of second admission chamber, first mistake
Fluid apertures, the second liquid pass hole, a diameter of 2.2mm of the 3rd liquid pass hole and the 4th liquid pass hole, the overall diameter of the liquid input section is 13mm.
The inside of the housing pin has the first directed cavity for accommodating the liquid input section and accommodate the guide section the
Two directed cavities, the diameter of the first directed cavity are more than the diameter of the second directed cavity.
Seal assembly is provided between the liquid input section and the housing pin, the seal assembly includes being enclosed on liquid input section
First sealing ring and the second sealing ring being enclosed on the first sealing ring, the material of the first sealing ring is composite plastic, and second seals
Enclose as O-ring.
The core assembly of safety valve of the present invention, axial limiting is carried out to valve element by housing pin, the spacing knot on valve element
Structure is located at the inside of housing pin and is engaged with housing pin, so the wall thickness of the liquid input section of valve element is required to reduce, valve element
Liquid input section inner chamber can set it is larger so that core assembly to cross flow quantity big, and then be advantageous to improve safety valve
The off-load ability of draining flow and safety valve.
Brief description of the drawings
This specification includes the following drawings, and shown content is respectively：
Fig. 1 is the sectional view of the safety valve with core assembly of the present invention；
Fig. 2 is the sectional view of core assembly of the present invention；
Fig. 3 is the sectional view of valve element；
Fig. 4 is the sectional view of housing pin；
Fig. 5 is the sectional view of valve pocket；
Fig. 6 is the sectional view of valve body；
Fig. 7 is the sectional view of spring base；
Fig. 8 is the cross-sectional view at the first liquid pass hole and the 3rd liquid pass hole；
Fig. 9 is the cross-sectional view at the second liquid pass hole and the 4th liquid pass hole；
In figure mark for：
1st, voltage regulation screw；2nd, valve casing；
3rd, spring base；301st, first boss；302nd, guide pad；303rd, second boss；304th, the first contact surface；305th, second
Contact surface；
4th, back-moving spring；
5th, housing pin；501st, the first directed cavity；502nd, the second directed cavity；503rd, the second unloading hole；504th, the second off-load
Chamber；505th, the 3rd accommodating cavity；506th, confined planes；
6th, valve element；601st, liquid input section；602nd, guide section；603rd, the first admission chamber；604th, the second admission chamber；605th, the first mistake
Fluid apertures；606th, the second liquid pass hole；607th, the 3rd liquid pass hole；608th, the 4th liquid pass hole；
7th, valve pocket；701st, the first accommodating cavity；702nd, the first unloading hole；703rd, the first unloading cavity；704th, the second accommodating cavity；
8th, valve body；801st, the first outage；802nd, the second outage；803rd, inlet opening；804th, hollow cavity；
9th, the first sealing ring；10th, the second sealing ring.
Embodiment
Below against accompanying drawing, by the description to embodiment, embodiment of the invention is made further details of
Explanation, it is therefore an objective to help those skilled in the art to have more complete, accurate and deep reason to design of the invention, technical scheme
Solution, and contribute to its implementation.
As shown in Figures 1 to 7, be a kind of safety valve, it include valve casing 2, be arranged at valve casing 2 inside the and of spring base 3
Back-moving spring 4 and the present invention core assembly, core assembly of the invention include valve body 8, be movably arranged valve element, be arranged
It is spacing in the valve pocket 7 on valve element and inside valve body 8 and being arranged at the inside of valve body 8 and be used for valve element and valve pocket 7
The housing pin 5 of effect, valve element include the liquid input section 601 and guide section 602 that set gradually vertically, liquid input section 601 it is outer straight
Footpath is more than the overall diameter of guide section 602, and valve pocket 7 is sheathed on liquid input section 601, and housing pin 5 is sheathed on guide section 602, is entered
Liquid section 601 is provided with the first liquid pass hole 605, the second liquid pass hole 606, the 3rd liquid pass hole 607 and the 4th being sequentially arranged vertically
Liquid pass hole 608.
Specifically, as depicted in figs. 1 and 2, valve casing 2 is the cylinder of both ends open and inner hollow, the He of voltage regulation screw 1
Valve body 8 is connected with the both ends of valve casing 2, and voltage regulation screw 1 is in one end of valve casing 2 insertion valve casing 2 and voltage regulation screw 1 and valve casing 2
For threaded connection, valve body 8 is in the other end insertion valve casing 2 of valve casing 2 and valve body 8 and valve casing 2 are to be threadedly coupled, voltage regulation screw
1 and valve body 8 by the closed at both ends of valve casing 2.
As shown in figures 1 to 6, valve body 8 is both ends open and the cylinder of inner hollow, and valve pocket 7 and housing pin 5 are set
In the hollow cavity 804 of valve body 8.Valve body 8 is connected for such as hydraulic cylinder grafting of the Hydraulic Elements with coal mine fully-mechanized mining hydraulic support
Connect, the inside of one end insertion valve casing 2 and the outer surface at the end of valve body 8 of valve body 8 are provided with external screw thread, accordingly at the end of valve casing 2
Portion's inner surface is provided with internal thread, and the other end of valve body 8 is located at the outside of valve casing 2 and for being connected with the Hydraulic Elements of peripheral hardware.Valve
Inlet opening 803 is provided with the inside center of body 8, inlet opening 803 is since the end face center of valve body 8 and axially towards valve body
The circular hole of 8 inside extension, the hollow cavity 804 of valve body 8 is to be arranged at the circular cavity at the inside center of valve body 8, hollow
It is to be coaxially disposed that the diameter of inner chamber 804, which is more than the diameter of inlet opening 803 and hollow cavity 804 and inlet opening 803, hollow cavity
804 connect and inlet opening 803 and hollow cavity 804 is are sequentially arranged along the axial direction of valve body 8 with inlet opening 803, and valve element is through pressure
Inserted after tight screw 5 and valve pocket 7 in inlet opening 803.Valve body 8 is provided with the first outage 801 and the second outage 802, and first
The outage 802 of outage 801 and second is is to be sequentially arranged along the axial direction of valve body 8 in the side wall of valve body 8, the first outage
801 and second outage 802 and in the side wall of valve body 8 along the manhole for extending radially through setting of valve body 8, the first discharge opeing
Hole 801 is simultaneously evenly distributed multiple in the side wall of valve body 8, and the second outage 802 is also evenly distributed in the side wall of valve body 8
It is multiple, and all first outages 801 and all second outages 802 are distributed in around the hollow cavity 804 of valve body 8, the
One outage 801 and the second outage 802 are connected with the hollow cavity 804 of valve body 8 and the first outage 801 and the second outage
The axis perpendicular of 802 axis and the hollow cavity 804 of valve body 8.First outage 801 and the second outage 802 are located at valve
The outside of shell 2, the second outage 802 is located proximate to valve casing 2, and in the axial direction of valve body 8, the second outage 802 is located at valve casing 2
And first between outage 801.
As depicted in figs. 1 and 2, for housing pin 5 with valve body 8 to be threadedly coupled, housing pin 5 is engaged clamping with valve body 8
Valve pocket 7.Housing pin 5 is inserted in the hollow cavity 804 of valve body 8, and the outer surface of housing pin 5 is provided with external screw thread, accordingly in valve
The terminal interior surface of body 8 is provided with internal thread, housing pin 5 and the outside for being enclosed on valve pocket 7, and valve pocket 7 is fixed on by housing pin 5
In the hollow cavity 804 of valve body 8, housing pin 5 simultaneously is used to play position-limiting action to valve element in the axial direction, so as to form integral knot
The core assembly of structure, housing pin 5, valve body 8, valve element and valve body 8 are to be coaxially disposed.Housing pin 5 and valve pocket are in valve body 8
Fixed setting, valve element are axially mobile setting, and one end of valve element is inserted in inlet opening 803, the other end and bullet of valve element
Spring abutment 3 is in contact.After entering highly pressurised liquid in the inlet opening 803 of valve body 8, highly pressurised liquid can promote valve element to move, and valve element enters
And push the spring seat 3 moves, until the liquid pass hole on valve element connects with the outage on valve body 8, formation allows highly pressurised liquid to pass through
Overflow ducts.
As shown in Figure 1 to Figure 3, valve element is one end open, one end is closed and the cylinder of inner hollow, the openend of valve element
Insert in the inlet opening 803 of valve body 8, the blind end of valve element is in contact with spring base 3.The liquid input section 601 and guide section 602 of valve element
To be fixedly and coaxially connected, liquid input section 601 is the cylinder of one end open, one end closing and inner hollow, and guide section 602 is also circle
Cylinder, the openend of liquid input section 601 is located in inlet opening 803 and the inner chamber of liquid input section 601 connects with inlet opening 803, liquid input section
601 blind end is fixedly connected with guide section 602, the first liquid pass hole 605, the second liquid pass hole 606, the 3rd liquid pass hole 607 and
Four liquid pass holes 608 are that the circular hole of setting, the first liquid pass hole 605, the second liquid pass hole are extended radially through in the side wall of liquid input section 601
606th, the axis perpendicular of the axis of the 3rd liquid pass hole 607 and the 4th liquid pass hole 608 and inlet opening 803.The He of first liquid pass hole 605
Second liquid pass hole 606 is close to the openend of liquid input section 601, and the 3rd liquid pass hole 607 and the 4th liquid pass hole 608 are close to liquid input section 601
Blind end, the first liquid pass hole 605 and the second liquid pass hole 606 are used to guide the liquid entered in valve element to setting on valve pocket 7
The first unloading hole 702, the liquid that the 3rd liquid pass hole 607 and the 4th liquid pass hole 608 are used to enter in valve element guided to compression
The second unloading hole 503 set on screw 5, the first unloading hole 702 connect with the first outage 801 set on valve body 8, and second
Unloading hole 503 connects with the second outage 802 set on valve body 8.When safety valve is opened, valve element is moved to made thereon
One liquid pass hole 605 and the second liquid pass hole 606 align with the first unloading hole 702, the 3rd liquid pass hole 607 and the 4th liquid pass hole 608 with
The opening position of second unloading hole 503 alignment, the first unloading hole 702 cause the first liquid pass hole 605 and the second liquid pass hole 606 and first
Outage 801 is connected, and the first liquid pass hole 605 and the second liquid pass hole 606 are formed with the first unloading hole 702 and the first outage 801
First overflow ducts, the second unloading hole 503 cause the 3rd liquid pass hole 607 and the 4th liquid pass hole 608 to connect with the second outage 802
Logical, the 3rd liquid pass hole 607 and the 4th liquid pass hole 608 form the second overflow with the second unloading hole 503 and the second outage 802 and led to
Road, flowed out into the highly pressurised liquid in the inlet opening 803 of valve body 8 through two overflow ducts outside valve body 8, realize release.
As shown in Figure 1 to Figure 3, the overall diameter of liquid input section 601 is more than the overall diameter of guide section 602, so as to the He of liquid input section 601
It is located between guide section 602 formed with a limited step, the limited step in the inner chamber of housing pin 5, housing pin 5 is with being somebody's turn to do
Limited step is engaged, and can play axial limiting effect, housing pin 5 and on the move to valve element when safety valve is opened
Valve element plays guide effect.Compared to spacing on the openend for relying on liquid input section of the valve pocket with being arranged at valve element in the prior art
Step is engaged carries out axial limiting to valve element, and the limited step is located in the inlet opening of valve body, for proof strength and rigidity,
It is larger that limited step on valve element requires that the wall thickness of valve element is set, and then limits the intracavity diameter of valve element, then limits
Cross flow quantity.And the valve element in the safety valve core assembly of the present invention is to carry out axial limiting, limiting stand component level by housing pin 5
In the inner chamber of housing pin 5, limited step is not located at the openend of liquid input section 601 of valve element, is only set on liquid input section 601
Liquid pass hole, so the side wall wall thickness of the liquid input section 601 of valve element is required to reduce, the wall thickness of liquid input section 601 can set it is thinner,
And then allow valve element liquid input section 601 inner chamber set it is larger, valve element cross flow quantity it is big, be advantageous to improve safety valve
Draining flow, and then the off-load ability of safety valve can be improved.
As shown in Figure 1 to Figure 3, the inside of liquid input section 601 has the first admission chamber 603 and second set gradually vertically
Admission chamber 604, the diameter of the first admission chamber 603 are more than the diameter of the second admission chamber 604, and the diameter of the first admission chamber 603 is less than
The diameter of inlet opening 803, the first liquid pass hole 605 and the second liquid pass hole 606 are located at the first admission chamber 603 radially, the 3rd mistake
The liquid pass hole 608 of fluid apertures 607 and the 4th is located at the second admission chamber 604 radially.In the axial direction of valve element, the second admission chamber 604
Between the first admission chamber 603 and guide section 602, the first admission chamber 603 and the second admission chamber 604 are connected with inlet opening 803
It is logical.First admission chamber 603 and the second admission chamber 604 are circular cavity, the first admission chamber 603 and the second admission chamber 604 and feed liquor
Hole 803 is to be coaxially disposed.Because the diameter of the first admission chamber 603 is more than the diameter of the second admission chamber 604, therefore surrounded on valve element
The side wall wall thickness of first admission chamber 603 is less than the side wall wall thickness for surrounding the second admission chamber 604, and the length of the first admission chamber 603 is small
In the length of the second admission chamber 604, the strength and stiffness that valve element is ensure that while big flow overflow are realized.
As shown in Figure 1 to Figure 3, the first liquid pass hole 605 is along the circle for extending radially through setting of valve element in the side wall of valve element
Shape through hole, the first liquid pass hole 605 are simultaneously evenly distributed multiple, the first liquid pass hole 605 and the first admission chamber in the side wall of valve element
603 connection and all first liquid pass holes 605 be distributed in around the first admission chamber 603, the axis and first of the first liquid pass hole 605
The axis perpendicular of admission chamber 603.Second liquid pass hole 606 is along the circle for extending radially through setting of valve element in the side wall of valve element
Through hole, the second liquid pass hole 606 are simultaneously evenly distributed multiple, the second liquid pass hole 606 and the first admission chamber 603 in the side wall of valve element
Connect and all second liquid pass holes 606 are distributed in around the first admission chamber 603, the axis of the second liquid pass hole 606 enters with first
The axis perpendicular of sap cavity 603.3rd liquid pass hole 607 is to lead in the side wall of valve element along the circle for extending radially through setting of valve element
Hole, the 3rd liquid pass hole 607 are simultaneously evenly distributed multiple in the side wall of valve element, and the 3rd liquid pass hole 607 connects with the second admission chamber 604
Logical and all 3rd liquid pass holes 607 are distributed in around the second admission chamber 604, the axis and the second feed liquor of the 3rd liquid pass hole 607
The axis perpendicular of chamber 604.4th liquid pass hole 608 is to lead in the side wall of valve element along the circle for extending radially through setting of valve element
Hole, the 4th liquid pass hole 608 are simultaneously evenly distributed multiple in the side wall of valve element, and the 4th liquid pass hole 608 connects with the second admission chamber 604
Logical and all 4th liquid pass holes 608 are distributed in around the second admission chamber 604, the axis and the second feed liquor of the 4th liquid pass hole 608
The axis perpendicular of chamber 604.First liquid pass hole 605, the second liquid pass hole 606, the 3rd liquid pass hole 607 and the 4th liquid pass hole 608
Pore size is equal and the first liquid pass hole 605, the second liquid pass hole 606, the quantity of the 3rd liquid pass hole 607 and the 4th liquid pass hole 608
It is identical, vertical range and the 3rd liquid pass hole 607 between the center of circle of the center of circle of the first liquid pass hole 605 and the second liquid pass hole 606
Vertical range between the center of circle and the center of circle of the 4th liquid pass hole 608 is equal in magnitude, and liquid is crossed in the center of circle of the first liquid pass hole 605 and the 3rd
Vertical range between the center of circle in hole 607 is vertical between the center of circle of the second liquid pass hole 606 and the center of circle of the 4th liquid pass hole 608
Apart from equal in magnitude.Opening position on valve element in corresponding first admission chamber 603 and the second admission chamber 604 sets first to cross liquid respectively
The liquid pass hole 606 of hole 605 and second, the 3rd liquid pass hole 607 and the 4th liquid pass hole 608 guide liquid to the outage on valve body 8
In, liquid level product was increased, improves the draining flow of safety valve.
First liquid pass hole 605 and the second liquid pass hole 606 are engaged, for liquid to be guided into the first unloading hole 702, such as
Shown in Fig. 8 and Fig. 9, as preferable, the first liquid pass hole 605 and the second liquid pass hole 606 on valve element to be staggeredly arranged, it is and wrong
The half of corner dimension of the angle opened between two neighboring first liquid pass hole 605 or two neighboring second liquid pass hole 606, the
One liquid pass hole 605 is not on the same straight line parallel with the axial direction of valve element with the second liquid pass hole 606.First liquid pass hole 605
A circle is set on valve element respectively with the second liquid pass hole 606, is staggeredly arranged and refers to, positioned at multiple first liquid pass holes of same circle
605 align after being rotated to an angle around the axis of valve element with multiple second liquid pass holes 606 positioned at same circle, i.e., circumferential each
First liquid pass hole 605 of individual opening position be in respectively with second liquid pass hole 606 it is parallel with the axis of valve element it is same always
On line.Position of each first liquid pass hole 605 on the perspective plane of valve element is located at two adjacent the second liquid pass holes 606 in valve element
Perspective plane on position among, the perspective plane of valve element and the axis perpendicular of valve element.First liquid pass hole 605 and the second liquid pass hole
606 are arranged by the way of this stagger, and while flow quantity was improved, can be increased the metallicity of valve element, be carried
The rigidity of high valve element so that valve element does not allow easy fracture.
3rd liquid pass hole 607 and the 4th liquid pass hole 608 are engaged, for liquid to be guided into the second unloading hole 503, such as
Shown in Fig. 8 and Fig. 9, as preferable, the 3rd liquid pass hole 607 and the 4th liquid pass hole 608 on valve element to be staggeredly arranged, it is and wrong
The half of corner dimension of the angle opened between two neighboring 3rd liquid pass hole 607 or two neighboring 4th liquid pass hole 608, the
Three liquid pass holes 607 are not on the same straight line parallel with the axial direction of valve element with the 4th liquid pass hole 608.3rd liquid pass hole 607
A circle is set on valve element respectively with the 4th liquid pass hole 608, is staggeredly arranged and refers to, positioned at multiple 3rd liquid pass holes of same circle
607 align after being rotated to an angle around the axis of valve element with multiple 4th liquid pass holes 608 positioned at same circle, i.e., circumferential each
3rd liquid pass hole 607 of individual opening position be in respectively with the 4th liquid pass hole 608 it is parallel with the axis of valve element it is same always
On line.Position of each 3rd liquid pass hole 607 on the perspective plane of valve element is located at two adjacent the 4th liquid pass holes 608 in valve element
Perspective plane on position among, the perspective plane of valve element and the axis perpendicular of valve element.3rd liquid pass hole 607 and the 4th liquid pass hole
608 are arranged by the way of this stagger, and while flow quantity was improved, can be increased the metallicity of valve element, be carried
The rigidity of high valve element so that valve element does not allow easy fracture.
As shown in Figure 1, Figure 2 and Figure 4, housing pin 5 is the cylinder of both ends open and inner hollow, housing pin 5
Inside has the first directed cavity 501 for accommodating liquid input section 601 and the second directed cavity 502 for accommodating guide section 602, the first directed cavity
501 diameter is more than the diameter of the second directed cavity 502.First directed cavity 501 and the second directed cavity 502 are in housing pin 5
A part for empty inner chamber, the first directed cavity 501 and the second directed cavity 502 are to be arranged at the circle at the inside center of housing pin 5
Shape cavity, the overall diameter of the diameter and liquid input section 601 of the first directed cavity 501 is equal in magnitude, and the diameter of the second directed cavity 502 is with leading
Equal in magnitude to the overall diameter of section 602, liquid input section 601 is inserted in the first directed cavity 501, and guide section 602 inserts the second directed cavity
In 502, the periphery of liquid input section 601 is contacted with the inner headed face of the first directed cavity 501, and the periphery of guide section 602 is led with second
Contacted to the inner headed face of chamber 502.The diameter of second directed cavity 502 is less than the overall diameter of liquid input section 601, therefore liquid input section 601 is not
It can be inserted into the second directed cavity 502, so as to play axial limiting effect to valve element.The inside of housing pin 5 also has second
Unloading cavity 504, the second unloading cavity 504 be arranged at housing pin 5 inside circular cavity, the diameter of the second unloading cavity 504
More than the diameter of the first directed cavity 501 and the second directed cavity 502 and three is is coaxially disposed, and the diameter of the second unloading cavity 504 is simultaneously
More than the overall diameter of liquid input section 601.In the axial direction of housing pin 5, the second unloading cavity 504 is located at the first directed cavity 501 and
Between two directed cavities 502, the second unloading cavity 504 is used to accommodate liquid, the 3rd liquid pass hole 607 and the 4th liquid pass hole 608 by the
Two unloading cavities 504 connect with the second unloading hole 503, and the liquid flowed out from the 3rd liquid pass hole 607 and the 4th liquid pass hole 608 is through
Two unloading cavities 504 are flowed into the second unloading hole 503, are finally flowed into the second outage 802.Second unloading hole 503 is to compress
Along the manhole for extending radially through setting of housing pin 5, the second unloading hole 503 and in housing pin 5 in the side wall of screw 5
It is evenly distributed multiple in side wall, the second unloading hole 503 connects with the second unloading cavity 504 and all second unloading holes 503 are distributed
Around the second unloading cavity 504, the axis perpendicular of the axis of the second unloading hole 503 and the second unloading cavity 504.In valve body 8
Radially, between the second outage 802 and the second unloading cavity 504, the second unloading hole 503 causes the second unloading hole 503
Second unloading cavity 504 and the second outage 802 are in connected state all the time.
As shown in figure 4, because the diameter of the second unloading cavity 504 is more than the diameter of the second directed cavity 502, therefore the second off-load
A confined planes 506 are formed between the directed cavity 502 of chamber 504 and second, when valve element moves axially, liquid input section 601 can only
It is inserted into the second unloading cavity 504, the limitation of confined planes 506 prevents liquid input section 601 from inserting in the second directed cavity 502, directly
After being contacted to confined planes 506 with the limited step on valve element, valve element moves into place, and the opening angle of safety valve is maximum.
As shown in Figure 2 and Figure 4, the inside of housing pin 5, which also has, is used to accommodating the 3rd accommodating cavity 505 of valve pocket 7, and the 3rd
Accommodating cavity 505 extends what is formed for the inside at one end end face center of housing pin 5 axially towards housing pin 5
Circular cavity, the overall diameter of the diameter and valve body 8 of the 3rd accommodating cavity 505 is equal in magnitude, the 3rd accommodating cavity 505, the first directed cavity
501st, the second unloading cavity 504 and the second directed cavity 502 are to be sequentially arranged along the axial direction of housing pin 5.
As shown in Figure 1, Figure 2 with shown in Fig. 5, valve pocket 7 is both ends open and the cylinder of inner hollow, and the inside of valve pocket 7 has
Accommodate the first accommodating cavity 701 and the second accommodating cavity 704 of liquid input section 601, the diameter and the second accommodating cavity of the first accommodating cavity 701
704 diameter is equal and equal in magnitude with the overall diameter of liquid input section 601, and the first accommodating cavity 701 and the second accommodating cavity 704 are
A part for the hollow cavity of valve pocket 7, the periphery of liquid input section 601 and the inner circle of the first accommodating cavity 701 and the second accommodating cavity 704
Face contacts.The inside of valve pocket 7 also has the first unloading cavity 703, and the first unloading cavity 703 is the circle for the inside for being arranged at valve pocket 7
Cavity, it is coaxially to set that the diameter of the first unloading cavity 703, which is more than the first accommodating cavity 701 and the diameter of the second accommodating cavity 704 and three,
Put, the diameter of the first unloading cavity 703 and the overall diameter for being more than liquid input section 601.In the axial direction of valve pocket 7, the first unloading cavity 703
Between the first accommodating cavity 701 and the second accommodating cavity 704, the first unloading cavity 703 is used to accommodate liquid, the He of the first liquid pass hole 605
Second liquid pass hole 606 is connected by the first unloading cavity 703 with the first unloading hole 702, from the first liquid pass hole 605 and the second liquid pass hole
The liquid flowed out in 606 is flowed into the first unloading hole 702 through the first unloading cavity 703, is finally flowed into the first outage 801.The
One unloading hole 702 be in the side wall of valve pocket 7 along the manhole for extending radially through setting of valve pocket 7, the first unloading hole 702 and
It is evenly distributed multiple in the side wall of valve pocket 7, the first unloading hole 702 is connected with the first unloading cavity 703 and all first unloading holes
702 are distributed in around the first unloading cavity 703, the axis perpendicular of the axis of the first unloading hole 702 and the first unloading cavity 703.
In valve body 8 radially, the first unloading hole 702 is between the first outage 801 and the first unloading cavity 703, the first unloading hole
702 cause the first unloading cavity 703 and the first outage 801 to be in connected state all the time.
As preferable, a diameter of 11.2mm of the first admission chamber 603, a diameter of 10.5mm of the second admission chamber 604, the
One liquid pass hole 605, the second liquid pass hole 606, a diameter of 2.2mm of the 3rd liquid pass hole 607 and the 4th liquid pass hole 608, liquid input section 601
Overall diameter be 13mm, the overall diameter of guide section 602 is 11mm, a diameter of 4.5mm of the first unloading hole 702, the second unloading hole
The diameter of 503 a diameter of 5mm, the first outage 801 and the second outage 802 is equal and the first outage 801 and second row
A diameter of 7mm of fluid apertures 802.
As shown in figure 1, spring base 3 is the inside for being movably arranged at valve casing 2, back-moving spring 4 and spring base 3 are formed and pushed away
Movable valve plug movement makes the resetting-mechanism that safety valve is closed, and back-moving spring 4 and spring base 3 are located at the inside of valve casing 2, back-moving spring 4
It is to be clipped between voltage regulation screw 1 and spring base 3, spring base 3 is promoted and can slided vertically by back-moving spring 4 and valve element in valve casing 2
Dynamic, valve element push the spring seat 3 can open safety valve towards movement at voltage regulation screw 1, the direction of 4 push the spring seat of back-moving spring 3
Movement can close safety valve at valve seat.
As shown in Figure 1 and Figure 7, spring base 3 has the first contact surface 304 with the end contact of valve element, the end face of valve element
It is the plane with the axis perpendicular of valve element with the first contact surface 304.Spring base 3 is by guide pad 302, first boss 301
Formed with second boss 303, guide pad 302 is circular block shape structure, and first boss 301 and second boss 303 are being oriented to respectively
The side of block 302 and guide pad 302 are connected to form one the spring base 3 of structure.First boss 301 and second boss 303 are with leading
Coaxial to block 302, first boss 301 is cylinder, and the diameter of guide pad 302 is more than first boss 301 and second boss 303
Diameter.Back-moving spring 4 is helical spring, and first boss 301 is for insertion into back-moving spring 4 to enter one end of back-moving spring 4
Row positioning.For second boss 303 to be spherical, the first contact surface 304 is the outer surface of second boss 303, the first contact surface 304 and the
The axis perpendicular of two boss 303.Spring base 3 is due to being clipped between back-moving spring 4 and valve element, and spring base 3 is diametrically
Gap (i.e. spring base 3 radially lacks support) is left between the inwall of valve casing 2, valve element and back-moving spring 4 are applied to spring base 3
Add active force vertically, spring base 3 by the end contact of the first contact surface 304 and valve element that are set in second boss 303,
Plane contact is formed, forms stable contact area, it can be ensured that the uniform force of spring base 3 so that spring base 3 is only by axial direction
Power, not by diametral interference, prevent from being caused back-moving spring 4 stuck by radial load or flexural deformation, improve reliability.
As shown in Figure 1 and Figure 7, spring base 3 has the second contact surface 305 with the end contact of valve body 8, the second contact surface
305 be the plane with valve body 8 and the axis perpendicular of spring base 3.Second contact surface 305 be guide section 602 outer surface, valve body
On 8 is the plane with the axis perpendicular of valve body 8 with the end face of the second contact surface 305.Spring base 3 passes through the second contact surface
305 play axial limiting effect to spring base 3 with the end contact of valve body 8, valve body 8, and stability is good.
As depicted in figs. 1 and 2, the first seal assembly, the sealing are provided between the liquid input section 601 and housing pin 5 of valve element
Component includes the first sealing ring 9 being enclosed on liquid input section 601 and the second sealing ring 10 being enclosed on the first sealing ring 9, and first is close
The material of seal 9 is composite plastic, and more traditional O-ring seals service life is high, good sealing effect.Second sealing ring 10 is O
Shape circle, the second sealing ring 10 apply pressure so that the first sealing ring 9 keeps contacting shape with the periphery of valve element to the first sealing ring 9
State, realize reliable sealing.Sealed between housing pin 5 and valve element by the first seal assembly, on the one hand can be further
Sealing effectiveness is improved, the hydraulic oil oil mass entered in the space between housing pin 5 and spring base 3 is reduced, on the other hand in footpath
To certain position-limiting action can be played to valve element.
As depicted in figs. 1 and 2, the second seal assembly, the seal assembly are provided between the liquid input section 601 and valve pocket 7 of valve element
Including the first sealing ring 9 being enclosed on liquid input section 601 and the second sealing ring 10 being enclosed on the first sealing ring 9, the first sealing ring 9
Material be composite plastic, more traditional O-ring seals service life is high, good sealing effect.Second sealing ring 10 is O-ring,
Second sealing ring 10 applies pressure so that the periphery of the first sealing ring 9 and valve element keeps contact condition, in fact to the first sealing ring 9
Existing reliable sealing between valve element and valve body 8.
The present invention is exemplarily described above in association with accompanying drawing.Obviously, present invention specific implementation is not by above-mentioned side
The limitation of formula.As long as employ the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress；Or not
It is improved, the above-mentioned design of the present invention and technical scheme are directly applied into other occasions, in protection scope of the present invention
Within.
Claims (10)
1. the core assembly of safety valve, including valve body, the valve element that is movably arranged and it is sheathed on valve element and is located at valve inner
Valve pocket, it is characterised in that：Also include being arranged at the inside of the valve body and be used to play position-limiting action to the valve element and valve pocket
Housing pin, valve element includes the liquid input section and guide section that set gradually vertically, and the overall diameter of liquid input section is more than guide section
Overall diameter, valve pocket are sheathed on liquid input section, and housing pin is sheathed on guide section, and liquid input section is provided with what is be sequentially arranged vertically
First liquid pass hole, the second liquid pass hole, the 3rd liquid pass hole and the 4th liquid pass hole.
2. the core assembly of safety valve according to claim 1, it is characterised in that：The housing pin is with the valve body
Threaded connection, housing pin is engaged with valve body clamps the valve pocket.
3. the core assembly of safety valve according to claim 1, it is characterised in that：The liquid input section and guide section are coaxial
It is fixedly connected, liquid input section is the cylinder of one end open, one end closing and inner hollow, and first liquid pass hole, second cross liquid
Hole, the 3rd liquid pass hole and the 4th liquid pass hole are the circular hole that setting is extended radially through in the side wall of liquid input section.
4. the core assembly of safety valve according to claim 3, it is characterised in that：First liquid pass hole and described second
Closing of the liquid pass hole close to the openend of the liquid input section, the 3rd liquid pass hole and the 4th liquid pass hole close to liquid input section
End, the first liquid pass hole and the second liquid pass hole are used to guide the liquid entered in valve element to the first off-load set on the valve pocket
Hole, the 3rd liquid pass hole and the 4th liquid pass hole are used to guide the liquid entered in valve element to second set on the housing pin
Unloading hole, the first unloading hole connect with the first outage set on the valve body, and the second unloading hole on the valve body with setting
The second outage connection.
5. the core assembly of the safety valve according to claim 3 or 4, it is characterised in that：First liquid pass hole and described
Vertical range between second liquid pass hole and the vertical range size phase between the 3rd liquid pass hole and the 4th liquid pass hole
Pore size Deng, the first liquid pass hole, the second liquid pass hole, the 3rd liquid pass hole and the 4th liquid pass hole is equal.
6. the core assembly of safety valve according to any one of claims 1 to 5, it is characterised in that：The inside of the liquid input section
With the first admission chamber and the second admission chamber set gradually vertically, the diameter of the first admission chamber is more than the straight of the second admission chamber
Footpath, first liquid pass hole and second liquid pass hole are located at the first admission chamber radially, the 3rd liquid pass hole and described
4th liquid pass hole is located at the second admission chamber radially.
7. the core assembly of safety valve according to claim 6, it is characterised in that：First admission chamber and described second
For admission chamber to be coaxially disposed, the length of the first admission chamber is less than the length of the second admission chamber.
8. the core assembly of the safety valve according to claim 6 or 7, it is characterised in that：The diameter of first admission chamber
For 11.2mm, a diameter of 10.5mm of second admission chamber, first liquid pass hole, the second liquid pass hole, the 3rd liquid pass hole and
A diameter of 2.2mm of 4th liquid pass hole, the overall diameter of the liquid input section is 13mm.
9. the core assembly of safety valve according to claim 1, it is characterised in that：The inside of the housing pin, which has, to hold
Receive the liquid input section the first directed cavity and accommodate the second directed cavity of the guide section, the diameter of the first directed cavity is more than second
The diameter of directed cavity.
10. the core assembly of safety valve according to any one of claims 1 to 9, it is characterised in that：The liquid input section with it is described
Seal assembly is provided between housing pin, the seal assembly includes the first sealing ring being enclosed on liquid input section and is enclosed on the first sealing
The second sealing ring on circle, the material of the first sealing ring is composite plastic, and the second sealing ring is O-ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710856234.XA CN107503785A (en) | 2017-09-21 | 2017-09-21 | The core assembly of safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710856234.XA CN107503785A (en) | 2017-09-21 | 2017-09-21 | The core assembly of safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107503785A true CN107503785A (en) | 2017-12-22 |
Family
ID=60698146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710856234.XA Withdrawn CN107503785A (en) | 2017-09-21 | 2017-09-21 | The core assembly of safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107503785A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0613515A1 (en) * | 1991-11-26 | 1994-09-07 | Dams Gmbh | High-pressure hydraulic valve. |
| RU2011112085A (en) * | 2011-04-12 | 2012-10-20 | Открытое акционерное общество "Объединенные машиностроительные технологии" (RU) | METHOD FOR ADDITION OF WATERPROOF WALLS OF SECTIONS OF MINE MECHANIZED FASTENERS |
| CN104141501A (en) * | 2014-08-06 | 2014-11-12 | 巨隆集团芜湖兴隆液压有限公司 | Valve element assembly of safety valve |
| CN105317450A (en) * | 2014-07-14 | 2016-02-10 | 巨隆集团芜湖兴隆液压有限公司 | High-flow safety valve |
| CN205618749U (en) * | 2016-05-12 | 2016-10-05 | 浙江创安液压科技有限公司 | Large -flow safety valve |
| CN205823230U (en) * | 2016-07-08 | 2016-12-21 | 北京博德世达石油技术股份有限公司 | A kind of relief valve |
-
2017
- 2017-09-21 CN CN201710856234.XA patent/CN107503785A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0613515A1 (en) * | 1991-11-26 | 1994-09-07 | Dams Gmbh | High-pressure hydraulic valve. |
| RU2011112085A (en) * | 2011-04-12 | 2012-10-20 | Открытое акционерное общество "Объединенные машиностроительные технологии" (RU) | METHOD FOR ADDITION OF WATERPROOF WALLS OF SECTIONS OF MINE MECHANIZED FASTENERS |
| CN105317450A (en) * | 2014-07-14 | 2016-02-10 | 巨隆集团芜湖兴隆液压有限公司 | High-flow safety valve |
| CN104141501A (en) * | 2014-08-06 | 2014-11-12 | 巨隆集团芜湖兴隆液压有限公司 | Valve element assembly of safety valve |
| CN205618749U (en) * | 2016-05-12 | 2016-10-05 | 浙江创安液压科技有限公司 | Large -flow safety valve |
| CN205823230U (en) * | 2016-07-08 | 2016-12-21 | 北京博德世达石油技术股份有限公司 | A kind of relief valve |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171222 |