CN202579393U - Hand-operated reversing valve and sealing structure thereof - Google Patents
Hand-operated reversing valve and sealing structure thereof Download PDFInfo
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- CN202579393U CN202579393U CN 201220180196 CN201220180196U CN202579393U CN 202579393 U CN202579393 U CN 202579393U CN 201220180196 CN201220180196 CN 201220180196 CN 201220180196 U CN201220180196 U CN 201220180196U CN 202579393 U CN202579393 U CN 202579393U
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- feed liquor
- primary seal
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- back fluid
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Abstract
The utility model provides a hand-operated reversing valve and a sealing structure thereof. A liquid return main sealing part is located in a first annular cavity, wherein an inner circumference wall and an outer circumference wall of the liquid return main sealing part are respectively in abutting-pressing contact with an inner circumference wall and an outer circumference wall of the first annular cavity; and/or a liquid inlet main sealing part is located in a second annular cavity, wherein an inner circumference wall and an outer circumference wall of a liquid inlet main sealing part are respectively in abutting-pressing contact with an inner circumference wall and an outer circumference wall of the second annular cavity. By adopting the technical scheme, a main sealing structure adopts a radial dynamic sealing mode, thereby greatly reducing abrasion to the main sealing parts, improving fouling resistance capacity of the main sealing parts and prolonging the service life of the main sealing parts. The hand-operated reversing valve is provided with the sealing structure.
Description
Technical field
The utility model relates to the control valve field, more specifically, relates to a kind of hand-operated direction valve and sealing configuration thereof.
Background technique
Hand-operated direction valve be the colliery with one of most important hydraulic element of hydraulic support, in the control system of hydraulic support, control flow direction realizes the difference action of hydraulic support.At present; Primary seal between the oil back chamber of hand-operated direction valve, active chamber, the hyperbaric chamber (comprising back liquid primary seal and feed liquor primary seal) mainly is to adopt primary seal structures such as conical surface soft seal, the hard sealing of the conical surface or plane soft seal, and the embodiment of the primary seal structure of conical surface seal, plane soft seal for example is provided respectively in number of patent application is 201120175187 and 201120015319 patent document.But above-mentioned conical surface seal form is when spool moves vertically; The axial butt joint of steel surface and steel surface contacts the primary seal that realizes; It exists contamination resistance poor, and the contamination particle ratio is easier to be stuck between spool and the sealing seat, and then causes problem poorly sealed, spool string liquid; Above-mentioned plane soft seal form; Be when the spool of metal material moves vertically; Annular end face on the spool axially compresses with the planar end surface of rubber material Sealing and contacts the primary seal that realizes, though improved sealing effect, after the long-time switching-over work of hand-operated direction valve; The annular end face of spool can cause impression and cause wearing and tearing at the end face of rubber seal; Possibly cause rubber seal to be worn through when serious, influence the working life and the sealing effect of rubber seal, finally can influence the working life of hand-operated direction valve.
The model utility content
The utility model is intended to propose a kind of sealing configuration of hand-operated direction valve, the problems referred to above that exist with the hand-operated direction valve that solves existing technology.The utility model has also proposed a kind of hand-operated direction valve.
An aspect, the utility model provides a kind of sealing configuration of hand-operated direction valve, and hand-operated direction valve is provided with actuator port, return opening and high pressure hydraulic fluid port, is formed with active chamber, oil back chamber and hyperbaric chamber in the valve body; Wherein, active chamber is communicated with actuator port, and oil back chamber is communicated with return opening, and hyperbaric chamber is communicated with the high pressure hydraulic fluid port; Also be provided with time liquid primary seal that is used to make active chamber and oil back chamber seal in the valve body, and the feed liquor primary seal that is used to make active chamber and hyperbaric chamber seal; Return the liquid primary seal and be in first annular housing, the inner circle wall, the periphery wall that return the liquid primary seal compress with inner circle wall, the periphery wall of first annular housing respectively and contact; And/or the feed liquor primary seal is in second annular housing, and the inner circle wall of feed liquor primary seal, periphery wall compress with inner circle wall, the periphery wall of second annular housing respectively and contact.
Further, actuator port, return opening and high pressure hydraulic fluid port all are opened on the valve body; First end of valve body is equipped with cam operated means, and second end is equipped with end cover; The valve body internal fixation is equipped with liquid return valve jacket, and can axially movable back fluid spool, control spool and feed liquor spool; Offer the first-class through hole that radially is provided with on the liquid return valve jacket; Control spool and feed liquor spool are set on the back fluid spool respectively; Back fluid spool comprises successively first section of connecting, middle transition section and second section; First section of back fluid spool can be driven by cam operated means, and middle transition section and control form the annular pass between the spool, is provided with first Returnning spring between second section and the end cover; The middle part of control spool offers second opening that radially is provided with; Liquid return valve jacket has first endoporus that is slidingly matched with first section of back fluid spool and control spool first end, offers first groove on the first endoporus hole wall, returns the liquid primary seal and is embedded in first groove; When first section of back fluid spool and the two adjacent end face of control spool are in separated state or mated condition, corresponding to the connected state or the isolation of oil back chamber and active chamber.
Further, also be installed with middle cover in the valve body; Offer the 3rd opening that radially is provided with on the middle cover; Form first slideway between second section of middle cover and the back fluid spool, form second slideway between second section of first end of feed liquor spool and the back fluid spool, control spool second end and first slideway, second slideway and be slidingly matched; The feed liquor primary seal is set on second section of the back fluid spool, between control spool and feed liquor spool, and can in first slideway and second slideway, slide; Be provided with second Returnning spring between second end of feed liquor spool and the end cover; When the two adjacent end face of feed liquor spool first end and middle cover is in separated state or mated condition, corresponding to the connected state or the isolation of hyperbaric chamber and active chamber.
Further, the periphery of control spool is provided with defining flange, and defining flange can slide in the limit chamber that is formed by liquid return valve jacket and middle cover.
Further, be provided with can be by the spacing limited step of valve body for first section of back fluid spool.
Further, offer second endoporus that is used for suit first Returnning spring on second section of the back fluid spool; Offer the 3rd endoporus that is used for suit second Returnning spring on the feed liquor spool.
Further, liquid return valve jacket, middle cover, end cover all and between the valve body are provided with sealing configuration; Middle cover is folded between liquid return valve jacket and the end cover, offers the 4th opening that radially is provided with on the end cover.
Further, return opening and high pressure hydraulic fluid port are opened on the valve body; First end of valve body is equipped with cam operated means, and second end is equipped with end cap, offers actuator port on the end cap; The valve body internal fixation is equipped with liquid return valve jacket, and can axially movable back fluid spool, control spool and feed liquor spool; Offer the first-class through hole that radially is provided with on the liquid return valve jacket; First end of back fluid spool can be driven by cam operated means, and second end of back fluid spool is oppositely arranged with first end of control spool; First Returnning spring is installed on the back fluid spool; Offer second opening that radially is provided with on the control spool; The feed liquor valve core housing is located on the control spool, is respectively arranged with second Returnning spring and the 3rd Returnning spring between feed liquor spool, control spool second end and the end cap; Liquid return valve jacket has first endoporus that is slidingly matched with second end of back fluid spool and control spool first end, offers first groove on the first endoporus hole wall, returns the liquid primary seal and is embedded in first groove; Back fluid spool second end and first end of control spool are in and separate or during mated condition, corresponding to the connected state or the isolation of oil back chamber and active chamber.
Further, also be installed with middle cover in the valve body, offer second groove on the control spool, the feed liquor primary seal is embedded in second groove; The opening of second groove cooperates with the endoporus hole wall of middle cover and/or the endoporus hole wall of feed liquor spool; When the two adjacent end face of middle cover and feed liquor spool is in separated state or mated condition, corresponding to the connected state or the isolation of hyperbaric chamber and active chamber.
Another aspect, the utility model also provide a kind of hand-operated direction valve, and this hand-operated direction valve is provided with the sealing configuration of above-mentioned hand-operated direction valve, return liquid primary seal and feed liquor primary seal and are O type circle and the back-up ring that is provided with in groups.
Technological scheme according to the utility model; Have at least one to be in the corresponding annular housing in liquid primary seal and the feed liquor primary seal because return; The inner circle wall, the periphery wall that are in the primary seal in the annular housing compress with inner circle wall, the periphery wall of annular housing respectively and contact; (wherein a side cavity communicates with active chamber with the cavity that reaches these primary seal both sides in the corresponding valve position of hand-operated direction valve in radial force distortion through this primary seal; The opposite side cavity communicates with hyperbaric chamber or oil back chamber) effect of seal; Be that at least one primary seal structure adopts the dynamic radial seal structure to realize primary seal in the utility model; The dynamic radial seal structure adopts axially movable sealing structures such as conical surface seal, plane soft seal with respect to hand-operated direction valve primary seal structure in the existing technology, and it is effective and be not easy to cause the advantage of main seal wears to have primary seal, thus the problem of having avoided primary seal structures such as conical surface seal of the prior art, plane soft seal to exist.Simultaneously, the primary seal contamination resistance that is in the annular housing of relative closure is strong, has further reduced the damage situations of primary seal.Adopt the technological scheme of the utility model, improved the sealability of primary seal structure and the working life of primary seal greatly, and reached the working life of raising hand-operated direction valve and the effect of usability.
Description of drawings
The accompanying drawing that constitutes the part of the utility model is used to provide the further understanding to the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 has schematically shown sealing configuration first embodiment's the cross-section structure of the hand-operated direction valve of the utility model; Wherein, hand-operated direction valve is in first working state that its oil back chamber and active chamber communicate;
Fig. 2 has schematically shown sealing configuration first embodiment's the cross-section structure of the hand-operated direction valve of the utility model; Wherein, hand-operated direction valve is in second working state that its hyperbaric chamber and active chamber communicate; And,
Fig. 3 has schematically shown sealing configuration second embodiment's the cross-section structure of the hand-operated direction valve of the utility model.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the utility model.
Referring to Fig. 1 to Fig. 3, show the cross-section structure of the sealing configuration of the hand-operated direction valve that the utility model provides.As shown in the figure, this hand-operated direction valve is provided with the actuator port A that connects executive component, the oil return inlet T and the high pressure hydraulic fluid port P that is connected high pressure fuel source that connects oil sump tank.Correspondingly be formed with active chamber 11, oil back chamber 12 and hyperbaric chamber 13 in the valve body 1 of hand-operated direction valve, wherein, active chamber 11 is communicated with actuator port A, and oil back chamber 12 is communicated with oil return inlet T, and hyperbaric chamber 13 is communicated with high pressure hydraulic fluid port P.Also be provided with back liquid primary seal 21 and feed liquor primary seal 31 in the valve body 1.When the active chamber 11 of hand-operated direction valve is communicated with hyperbaric chamber 13, returns liquid primary seal 21 and be used to make active chamber 11 and oil back chamber 12 seal; When the active chamber 11 of hand-operated direction valve was communicated with oil back chamber 12, feed liquor primary seal 31 was used to make active chamber 11 and hyperbaric chamber 13 seal.
By finding out among the figure, return liquid primary seal 21 and be in first annular housing, the inner circle wall, the periphery wall that return liquid primary seal 21 compress with inner circle wall, the periphery wall of first annular housing respectively and contact.Returning liquid primary seal 21 mainly is when the active chamber 11 of hand-operated direction valve communicates with hyperbaric chamber 13, to play a role, and makes the active chamber 11 and oil back chamber 12 seal of hand-operated direction valve.
Feed liquor primary seal 31 is in second annular housing, and the inner circle wall of feed liquor primary seal 31, periphery wall compress with inner circle wall, the periphery wall of second annular housing respectively and contact.Feed liquor primary seal 31 mainly is when the active chamber 11 of hand-operated direction valve communicates with oil back chamber 12, to play a role, and makes the active chamber 11 and hyperbaric chamber 13 seal of hand-operated direction valve.
Through the internal structure of hand-operated direction valve rationally is set; Do not play under the prerequisite of seal action separately with feed liquor primary seal 31 influencing back liquid primary seal 21; To return liquid primary seal 21 is separately positioned in first annular housing, second annular housing with feed liquor primary seal 31; Be in that primary seal (comprising back liquid primary seal 21 and feed liquor primary seal 31) radial force generation in each self-corresponding annular housing is out of shape and reach expection sealing effect separately respectively in the different valve position of hand-operated direction valve; The primary seal structure that is the utility model adopts the dynamic radial seal structure to realize primary seal; It is effective and be not easy to cause the advantage of main seal wears that this structure has primary seal, thus the problem of having avoided primary seal structures such as conical surface seal of the prior art, plane soft seal to exist.Simultaneously, the primary seal contamination resistance that is in the annular housing of relative closure is strong, has further reduced the damage situations of primary seal.Adopt the technological scheme of the utility model, improved the sealability of primary seal structure and the working life of primary seal greatly, and reached the working life of raising hand-operated direction valve and the effect of usability.
Understand easily, above-mentioned first annular housing is to be used to hold back liquid primary seal 21 and to make back liquid primary seal 21 receive a radially annular space of chucking power, makes back that the sealing configuration of liquid primary seal 21 is the dynamic radial seal structure.Along with the valve position conversion of hand-operated direction valve, corresponding variation generally can take place in its component that constitute first annular housing of hand-operated direction valve.In the specific embodiment of the hand-operated direction valve that is provided hereinafter, the hand-operated direction valve of having given an example out constitutes the concrete component of first annular housing when being in different hand-operated direction valve valve position.
In like manner, second annular housing is to be used to hold feed liquor primary seal 31 and to make feed liquor primary seal 31 receive radially another annular space of chucking power, makes that the sealing configuration of feed liquor primary seal 31 is the dynamic radial seal structure.Valve position conversion along with hand-operated direction valve; Corresponding variation generally can take place in its component that constitute second annular housing of hand-operated direction valve; In the specific embodiment of the hand-operated direction valve that is provided hereinafter, the hand-operated direction valve of having given an example out constitutes the concrete component of second annular housing when being in different hand-operated direction valve valve position.
Need to prove; Return and also can have only one to be in the corresponding annular housing in liquid primary seal 21 and the feed liquor primary seal 31; It is the dynamic radial seal structure that one of them primary seal adopts the utility model; Reach the stain resistance that promotes back liquid primary seal 21 or feed liquor primary seal 31, the effect that prolongs back the working life of liquid primary seal 21 or feed liquor primary seal 31.
Fig. 1 and Fig. 2 show first embodiment of the sealing configuration of the hand-operated direction valve that the utility model provides.
By finding out that the actuator port A of this hand-operated direction valve, oil return inlet T and high pressure hydraulic fluid port P all are opened on the valve body 1 among the figure.The center line of actuator port A, oil return inlet T and high pressure hydraulic fluid port P is parallel to each other in this embodiment.First end of valve body 1 is equipped with cam operated means 15, and cam operated means 15 has in the prior art to be related to, and repeats no more at this.Second end of valve body 1 is equipped with end cover 91.
On liquid return valve jacket 51, offer the first-class through hole 510 that radially is provided with, first-class through hole 510 is positioned at oil back chamber 12, to guarantee that liquid return valve jacket 51 is isolated into two parts that communicate with oil back chamber 12; Offer the 3rd opening 520, the three openings 520 that radially are provided with on the middle cover 52 and be positioned at active chamber 11, to guarantee that middle cover 12 is isolated into two parts that communicate with active chamber 11; Offer the 4th opening (not adding label among the figure) that radially is provided with on the end cover 91, the 4th opening is positioned at hyperbaric chamber 13, to guarantee that end cover 91 is isolated into two parts that communicate with hyperbaric chamber 13.
Be equipped with in the valve body 1 can be axially movable back fluid spool 2, control spool 3 and feed liquor spool 4, control spool 3 is set in respectively on the back fluid spool 2 with feed liquor spool 4.By finding out among the figure, after back fluid spool 2 passes the center hole of liquid return valve jacket 51, middle cover 52 successively, cooperate with the center hole of end cover 91.Back fluid spool 2 comprises successively first section 201 of connecting, middle transition section 202 and second section 203.First section 201 of back fluid spool can be driven by cam operated means 15, is provided with first Returnning spring 61 between second section 203 and the end cover 91.
Can find out that in conjunction with Fig. 1 and Fig. 2 liquid return valve jacket 51 has first endoporus that is slidingly matched with first section 201 of back fluid spool and control spool 3 first ends, offers first groove 512 on the first endoporus hole wall, returns liquid primary seal 21 and is embedded in first groove 512.Understand easily; The opening of first groove 512 always is in the state of being established by the periphery wall lid of the periphery wall of first section 201 of back fluid spool and/or control spool 3 first ends in the movement process of each spool, thereby forms first annular housing that liquid primary seal 21 is installed back.
It can also be seen that in conjunction with Fig. 1 and Fig. 2; Form first slideway (among the figure not label) between second section 203 of middle cover 52 and the back fluid spool; Form second slideway (among the figure not label) between second section 203 of first end of feed liquor spool 4 and the back fluid spool, control spool 3 second ends and first slideway, second slideway are slidingly matched.Be provided with second Returnning spring 62 between second end of feed liquor spool 4 and the end cover 91.
Feed liquor primary seal 31 is set on second section 203 of the back fluid spool, between control spool 3 and feed liquor spool 4, and can in first slideway and second slideway, slide.Understand easily, in the movement process of each spool, feed liquor primary seal 31 always is in second annular housing of relative closure, and just under the different motion state of spool, the component of forming the second annular housing cavity wall are different.
Below in conjunction with Fig. 1 and Fig. 2 as far as the working principle of the hand-operated direction valve of present embodiment be elaborated (orientation such as left and right hereinafter is with respect to Fig. 1 and Fig. 2).
Hand-operated direction valve shown in Fig. 1 is in its meta state, and first section 201 of back fluid spool and control spool 3 the two adjacent end face are in separated state (this moment, oil back chamber 12 was in communicating state with active chamber 11, and actuator port A is communicated with oil return inlet T) at this moment.Particularly; The periphery wall of control spool 3 first ends covers (first groove that is liquid return valve jacket 51 forms first annular housing with control spool 3 first end periphery walls) on the opening that is located at first groove 512; Active chamber 11 then is communicated with oil back chamber 12 through gap, the first-class through hole 510 between first section 201 of the annular pass between the 3rd opening 520, second opening 30, control spool 3 and the back fluid spool middle transition section 202, control spool 3 and the back fluid spool, and actuator port A is communicated with oil return inlet T.Meanwhile; Feed liquor spool 4 first ends and middle cover 52 the two adjacent end face are in mated condition, and feed liquor primary seal 31 is in by 2 second sections periphery walls of end face, back fluid spool, feed liquor spool of control spool 34 it and forms in second annular housing that the endoporus of second slideway and endoporus that middle cover 52 forms first slideway surround.When hand-operated direction valve was in its meta state, feed liquor primary seal 31 worked and makes active chamber 11 and hyperbaric chamber 13 seal, and promptly actuator port A and high pressure hydraulic fluid port P break off.
When needing switching-over; Operation of cam operating device 15; Cam operated means 15 promotes back fluid spool 2 and moves right; First section 201 of back fluid spool docks with the two adjacent end face of control spool 3 first ends; And then spool 3 is controlled in promotion, feed liquor primary seal 31 moves right, thereby realizes separate (feed liquor primary seal 31 is pushed in the 2 second sections periphery walls of end face, back fluid spool of controlling spool 3 and second annular housing that feed liquor spool 4 its endoporus that form second slideway surround) of feed liquor spool 4 and middle cover 52 the two adjacent face.Promptly as shown in Figure 2 after spool moves right and puts in place, active chamber 11 is communicated with hyperbaric chamber 13 after through the gap between the 3rd opening 520, first slideway, middle cover 52 and the feed liquor spool 4, the 4th opening, and actuator port A is communicated with high pressure hydraulic fluid port P.Can learn from preceding text; First section 201 of back fluid spool and the adjacent end face of control spool 3 first ends connect at this moment; Return liquid primary seal 21 and be in first annular housing that first section 201 periphery wall of first groove, back fluid spool and control spool 3 first end periphery walls by liquid return valve jacket 51 surround, return liquid primary seal 21 and work and make active chamber 11 and oil back chamber 12 seal.
When cam operated means resets; Back fluid spool 2 resets under the effect of first Returnning spring 61; Feed liquor spool 4 resets under the effect of second Returnning spring 62; Feed liquor primary seal 31 momentary reset under the pressure effect of falling of active chamber and hyperbaric chamber drives control spool 3 simultaneously and also resets, and makes hand-operated direction valve reply its meta state.
Understand easily in conjunction with Fig. 1 and Fig. 2; The hand-operated direction valve that present embodiment provides adopts the dynamic radial seal structure; Simple in structure, when realizing the primary seal performance, can also prolong working life of each primary seal, the usability and the working life of having improved hand-operated direction valve.
Preferably, returning liquid primary seal 21 can be for O type circle and the back-up ring that is provided with in groups, to reduce cost with feed liquor primary seal 31.Certainly, each primary seal can also adopt other dynamic radial seal structures, for example piston type seal ring.Preferably, the periphery of control spool 3 is provided with defining flange 32, and defining flange 32 can slide in the limit chamber that is formed by liquid return valve jacket 51 and middle cover 52, and control spool 3 is played guiding and spacing effect.Preferably, back fluid spool is provided with for first section 201 and can back fluid spool is resetted smoothly by the spacing limited step of valve body 1.Preferably; For ease of location and installation first Returnning spring 61 and second Returnning spring 62; Offer second endoporus that is used for suit first Returnning spring 61 on second section 203 of the back fluid spool, offer the 3rd endoporus that is used for suit second Returnning spring 62 on the feed liquor spool 4.Preferably, liquid return valve jacket 51, middle cover 52, end cover 91 all and between the valve body 1 are provided with sealing configuration, and the sealing structure also can be O type circle and the back-up ring that is provided with in groups.
Fig. 3 shows second embodiment of the sealing configuration of the hand-operated direction valve that the utility model provides.By finding out that this hand-operated direction valve has two actuator port A and B among the figure, come this embodiment is elaborated below in conjunction with actuator port A.The sealing principle of present embodiment primary seal is identical with above-mentioned first embodiment's primary seal principle, the dynamic radial seal structure that all adopts, but structural type and mode of operation and first embodiment's hand-operated direction valve has difference.
By finding out among Fig. 3, oil return inlet T and high pressure hydraulic fluid port P are opened on the valve body 1, and first end of valve body 1 is equipped with cam operated means 15, the second ends end cap 92 is installed, and actuator port A is opened on the end cap 92.In the present embodiment, the center line of oil return inlet T and high pressure hydraulic fluid port P parallels, and the center line of the center line of oil return inlet T and actuator port A is perpendicular.
On liquid return valve jacket 51, offer the first-class through hole 510 that radially is provided with.First end of back fluid spool 2 can be driven by cam operated means 15, and second end of back fluid spool 2 is oppositely arranged with first end of control spool 3.First Returnning spring 61 is installed on the back fluid spool 2.
Offer second opening 30 that radially is provided with on the control spool 3.Feed liquor spool 4 is set on the control spool 3, is respectively arranged with second Returnning spring 62 and the 3rd Returnning spring 63 between feed liquor spool 4, control spool 3 second ends and the end cap 92.
Liquid return valve jacket 51 has first endoporus that is slidingly matched with second end of back fluid spool 2 and control spool 3 first ends (among the figure not label), offers first groove 512 on first endoporus, returns liquid primary seal 21 and is embedded in first groove 512.The opening of first groove 512 always is in the valve core movement process by back fluid spool 2 periphery walls and/or control spool 3 periphery walls and covers the state of establishing, and forms first annular housing that liquid primary seal 21 is installed back.
Control offers second groove (among the figure not label) on the spool 3, and feed liquor primary seal 31 is embedded in second groove; The opening of second groove cooperates with the endoporus hole wall of middle cover 52 and/or the endoporus hole wall of feed liquor spool 4, to form second annular housing that feed liquor primary seal 31 is installed.
Specify the working principle of present embodiment below in conjunction with Fig. 3.
Among Fig. 3; Back fluid spool 2 second ends are in separated state with first end of control spool 3; This moment, active chamber 11 was communicated with oil back chamber 12; Actuator port A communicates with oil return inlet T, and particularly, active chamber 11 is communicated with oil back chamber 12 with gap, the first-class through hole 510 controlled between the spool 3 through back fluid spool 2.Middle cover 52 is in mated condition with feed liquor spool 4 the two adjacent end face, and active chamber 11 breaks off with hyperbaric chamber 13.Feed liquor primary seal 31 is in second annular housing that the inner hole wall of inner hole wall, the feed liquor spool 4 of second groove, middle cover 52 surrounds, and makes active chamber 11 and hyperbaric chamber 13 seal.Simultaneously, returning liquid primary seal 21 is in first annular housing that first groove 512 and control spool 3 periphery walls surround.
When through 15 switching-overs of operation of cam operating device, cam operated means 15 promotion back fluid spools 2, control spool 3, feed liquor spool 4 move right.After motion put in place, back fluid spool 2 second ends docked with control spool 3 first ends, and oil back chamber 12 breaks off with active chamber 11.Middle cover 52 is in separated state with feed liquor spool 4 the two adjacent end face, and active chamber 11 is communicated with hyperbaric chamber 13, and actuator port A communicates with high pressure hydraulic fluid port P.Particularly, active chamber 11 is communicated with (can referring to the state of the actuator port B among Fig. 3) through the gap between second opening 30, middle cover and the feed liquor spool 4, opening on the end cap 92 with hyperbaric chamber 13.Return liquid primary seal 21 and be in first annular housing that first groove 512, back fluid spool 2 periphery walls and control spool 3 periphery walls surround, make active chamber 11 and oil back chamber seal.Simultaneously, feed liquor primary seal 31 is in second annular housing that second groove and feed liquor spool 4 inner hole walls surround.
When once more through operation of cam operating device 15 switching-over, back fluid spool 2, control spool 3 and feed liquor spool 4 reset under the effect of separately Returnning spring, and feed liquor primary seal 31 resets with control spool 3.
Understand easily referring to Fig. 3; The hand-operated direction valve that present embodiment provides; Its primary seal structure adopts the dynamic radial seal structure; Have good sealing effect, be not easy each primary seal is caused wearing and tearing and advantages of simple structure and simple, when realizing each primary seal performance, can also prolong the working life of each primary seal, the usability and the working life of having improved hand-operated direction valve.
In sum, adopt the technological scheme of the utility model, the good seal performance of primary seal, be not easy contaminated, long service life, simple in structure and cost is low.
Another aspect, the utility model also provide a kind of hand-operated direction valve, and this hand-operated direction valve is provided with the sealing configuration of above-mentioned hand-operated direction valve, wherein, return liquid primary seal 21 and are O type circle and the back-up ring that is provided with in groups with feed liquor primary seal 31.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (10)
1. the sealing configuration of a hand-operated direction valve, said hand-operated direction valve is provided with actuator port (A), return opening (T) and high pressure hydraulic fluid port (P), is formed with active chamber (11), oil back chamber (12) and hyperbaric chamber (13) in the said valve body (1); Wherein, said active chamber (11) is communicated with said actuator port (A), and said oil back chamber (12) is communicated with said return opening (T), and said hyperbaric chamber (13) is communicated with said high pressure hydraulic fluid port (P);
Also be provided with time liquid primary seal (21) that is used to make said active chamber (11) and said oil back chamber (12) seal in the said valve body (1), and the feed liquor primary seal (31) that is used to make said active chamber (11) and said hyperbaric chamber (13) seal;
It is characterized in that,
Said time liquid primary seal (21) is in first annular housing, and the inner circle wall of said time liquid primary seal (21), periphery wall compress with inner circle wall, the periphery wall of said first annular housing respectively and contact;
And/or
Said feed liquor primary seal (31) is in second annular housing, and the inner circle wall of said feed liquor primary seal (31), periphery wall compress with inner circle wall, the periphery wall of said second annular housing respectively and contact.
2. sealing configuration according to claim 1 is characterized in that,
Said actuator port (A), return opening (T) and high pressure hydraulic fluid port (P) all are opened on the said valve body (1); First end of said valve body (1) is equipped with cam operated means (15), and second end is equipped with end cover (91);
Said valve body (1) internal fixation is equipped with liquid return valve jacket (51), and can axially movable back fluid spool (2), control spool (3) and feed liquor spool (4); Offer the first-class through hole (510) that radially is provided with on the said liquid return valve jacket; Said control spool (3) and said feed liquor spool (4) are set in respectively on the said back fluid spool (2);
Said back fluid spool (2) comprises successively first section (201) connecting, middle transition section (202) and second section (203); First section (201) of said back fluid spool can be driven by said cam operated means (15); Form the annular pass between middle transition section (202) and the said control spool (3), be provided with first Returnning spring (61) between second section (203) and the said end cover (91);
The middle part of said control spool (3) offers second opening (30) that radially is provided with;
Said liquid return valve jacket (51) has first endoporus that first section (201) and said control spool (3) first ends with said back fluid spool are slidingly matched; Offer first groove (512) on the said first endoporus hole wall, said time liquid primary seal (21) is embedded in said first groove (512);
When (2) first sections of said back fluid spools and the two adjacent end face of said control spool (3) are in separated state or mated condition, corresponding to connected state or the isolation of said oil back chamber (12) with said active chamber (11).
3. sealing configuration according to claim 2 is characterized in that,
Also be installed with middle cover (52) in the said valve body (1); Offer the 3rd opening (520) that radially is provided with on the said middle cover (52);
Said middle cover (52) and said back fluid spool form first slideway between second section (203); First end of said feed liquor spool (4) and said back fluid spool form second slideway between second section (203), and said control spool (3) second ends and said first slideway, second slideway are slidingly matched;
Said feed liquor primary seal (31) is set on the said back fluid spool second section (203), is positioned between said control spool (3) and the said feed liquor spool (4), and can in said first slideway and said second slideway, slides;
Be provided with second Returnning spring (62) between second end of said feed liquor spool (4) and the said end cover (91);
When said feed liquor spool (4) first ends and the two adjacent end face of said middle cover (52) are in separated state or mated condition, corresponding to connected state or the isolation of said hyperbaric chamber (13) with said active chamber (11).
4. sealing configuration according to claim 3 is characterized in that, the periphery of said control spool (3) is provided with defining flange (32), and said defining flange (32) can slide in the limit chamber that is formed by said liquid return valve jacket (51) and said middle cover (52).
5. sealing configuration according to claim 3 is characterized in that, said back fluid spool first section (201) is provided with can be by the spacing limited step of said valve body (1).
6. sealing configuration according to claim 3 is characterized in that, said back fluid spool offers second endoporus that is used for said first Returnning spring of suit (61) on second section (203); Offer the 3rd endoporus that is used for said second Returnning spring of suit (62) on the said feed liquor spool (4).
7. sealing configuration according to claim 3 is characterized in that,
Said liquid return valve jacket (51), middle cover (52), end cover (91) all and between the said valve body (1) are provided with sealing configuration;
Said middle cover (52) is folded between said liquid return valve jacket (51) and the said end cover (91), offers the 4th opening that radially is provided with on the said end cover (91).
8. sealing configuration according to claim 1 is characterized in that,
Said return opening (T) and high pressure hydraulic fluid port (P) are opened on the said valve body (1); First end of said valve body (1) is equipped with cam operated means (15), and second end is equipped with end cap (92), offers actuator port (A) on the said end cap (92);
Said valve body (1) internal fixation is equipped with liquid return valve jacket (51), and can axially movable back fluid spool (2), control spool (3) and feed liquor spool (4); Offer the first-class through hole (510) that radially is provided with on the said liquid return valve jacket (51);
First end of said back fluid spool (2) can be driven by said cam operated means (15), and first end of second end of said back fluid spool (2) and said control spool (3) is oppositely arranged; First Returnning spring (61) is installed on the said back fluid spool (2);
Offer second opening (30) that radially is provided with on the said control spool (3); Said feed liquor spool (4) is set on the said control spool (3), is respectively arranged with second Returnning spring (62) and the 3rd Returnning spring (63) between said feed liquor spool (4), control spool second end and the said end cap (92);
Said liquid return valve jacket (51) has first endoporus that second end and said control spool (3) first ends with said back fluid spool (2) are slidingly matched; Offer first groove (512) on the said first endoporus hole wall, said time liquid primary seal (21) is embedded in said first groove;
Said back fluid spool (2) second ends and first end of said control spool (3) are in and separate or during mated condition, corresponding to connected state or the isolation of said oil back chamber (12) with said active chamber (11).
9. sealing configuration according to claim 8 is characterized in that,
Also be installed with middle cover (52) in the said valve body (1), offer second groove on the said control spool (3), said feed liquor primary seal (31) is embedded in said second groove;
The opening of said second groove cooperates with the endoporus hole wall of said middle cover (52) and/or the endoporus hole wall of said feed liquor spool (4);
When said middle cover (52) is in separated state or mated condition with the two adjacent end face of said feed liquor spool (4), corresponding to connected state or the isolation of said hyperbaric chamber (13) with said active chamber (11).
10. a hand-operated direction valve is characterized in that, is provided with the sealing configuration of each described hand-operated direction valve in the claim 1 to 9, and said time liquid primary seal (21) and feed liquor primary seal (31) are O type circle and the back-up ring that is provided with in groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220180196 CN202579393U (en) | 2012-04-25 | 2012-04-25 | Hand-operated reversing valve and sealing structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220180196 CN202579393U (en) | 2012-04-25 | 2012-04-25 | Hand-operated reversing valve and sealing structure thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202579393U true CN202579393U (en) | 2012-12-05 |
Family
ID=47248809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220180196 Withdrawn - After Issue CN202579393U (en) | 2012-04-25 | 2012-04-25 | Hand-operated reversing valve and sealing structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202579393U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678643A (en) * | 2012-04-25 | 2012-09-19 | 三一重型综采成套装备有限公司 | Hand-operated reversing valve and sealing structure thereof |
| CN105605016A (en) * | 2016-03-03 | 2016-05-25 | 安徽万荣航天设备有限公司 | Automatic reset hydraulic manual valve |
-
2012
- 2012-04-25 CN CN 201220180196 patent/CN202579393U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678643A (en) * | 2012-04-25 | 2012-09-19 | 三一重型综采成套装备有限公司 | Hand-operated reversing valve and sealing structure thereof |
| CN102678643B (en) * | 2012-04-25 | 2015-02-18 | 三一重型综采成套装备有限公司 | Hand-operated reversing valve and sealing structure thereof |
| CN105605016A (en) * | 2016-03-03 | 2016-05-25 | 安徽万荣航天设备有限公司 | Automatic reset hydraulic manual valve |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121205 Effective date of abandoning: 20150218 |
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| RGAV | Abandon patent right to avoid regrant |