CN108413074A - A kind of insert type change-over valve - Google Patents
A kind of insert type change-over valve Download PDFInfo
- Publication number
- CN108413074A CN108413074A CN201810612367.7A CN201810612367A CN108413074A CN 108413074 A CN108413074 A CN 108413074A CN 201810612367 A CN201810612367 A CN 201810612367A CN 108413074 A CN108413074 A CN 108413074A
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- Prior art keywords
- hydraulic fluid
- fluid port
- spool
- spring
- piston
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
- F16K11/0716—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides with fluid passages through the valve member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The present invention proposes a kind of insert type change-over valve, including：First valve casing；Spool；First spring base；Second spring seat；Second valve casing；Piston；Attachment spacers；First spring；Second spring；End cap；Hand push-and-pull rod；Set screw；Wherein, the spool moves between first position, the second position and the third place.Insert type change-over valve according to the ... of the embodiment of the present invention, simple and compact for structure, manufacturing cost is low, is convenient for Integrated design, and commutation can be realized by hydraulic control or realizes commutation by being manually operated, and may be implemented to position by adjusting set screw in manual reverse of direction.
Description
Technical field
The present invention relates to control valve technical fields, more particularly to a kind of insert type change-over valve.
Background technology
Currently, having widely applied the double behaviour's reversal valves of manually-hydraulic control in walking machine equipment, this product can both pass through control
Solenoid valve processed realizes remote-controlled operation, can also be realized by operation handle and closely be controlled, equipment used very convenient.
But the double behaviour's reversal valves of manual-hydraulic control in the market are mostly multiple directional control valve form, are above had the following disadvantages in application：
(1) valve body is formed by cast casting, and runner is fixed, and several double behaviour's reversal valves is linked together by bolt, no
Conducive to Integration Design, it is difficult to realize complicated hydraulic circuit control.
(2) structure is complex, bulky, is unfavorable for applying in small and light machine equipment.
Invention content
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, an object of the present invention is to provide a kind of simple and compact for structure, manufacturing cost is low, is convenient for Integrated design
Insert type change-over valve.
A kind of insert type change-over valve according to the ... of the embodiment of the present invention, including：
First valve casing has the first valve opening for penetrating through first valve casing in left-right direction on first valve casing, described
The first hydraulic fluid port, the second oil that there is arranged for interval in left-right direction on the side wall of first valve casing and be connected to first valve opening
Mouth and third hydraulic fluid port, the right opening of first valve opening are configured to the 4th hydraulic fluid port；
Spool, the spool can be movably located in first valve opening, had on the spool and are open to the right
Blind hole has the through flow hole for being connected to the blind hole on the side wall of the spool, and the through flow hole is adjacent to the left end of the spool, institute
Stating has through-flow slot on the periphery wall of spool；
There is left end the first spring base of flanging, first spring base to be contained in the left end of first valve opening and described
The right side of flanging is resisted against the left side of first valve casing, and the right end of first spring base has first through hole, described
The left side of spool is against the right side of first spring base；
Second spring seat, the right side of the second spring seat hold against the left side of first valve casing and the flanging
It is contained in the right end of the second spring seat, the left end of the second spring seat has the second through-hole, the hole of second through-hole
Diameter is more than the aperture of the first through hole；
Second valve casing, second valve casing has penetrates through the second valve opening of second valve casing in left-right direction, and described the
The left end of two spring bases and first valve casing coordinates in the right end of second valve casing, the internal perisporium of second valve opening
The upper stage portion with against the left side of the second spring seat；
Piston, the piston can be movably located in second valve casing, and the right end of the piston sequentially passes through institute
It states the second through-hole and the first through hole and is connected with the left end of the spool, the piston includes being adapted to the first through hole
Undergauge section and the main paragraph that is adapted to second through-hole, the main paragraph be located at the tool of the part on the left of the second spring seat
Have prominent stupefied, the stupefied peripheral surface of dashing forward is adapted with the inner peripheral surface of second valve opening, is had positioned at institute on second valve casing
State the 5th hydraulic fluid port in prominent stupefied left side and the 6th hydraulic fluid port positioned at the stupefied right side of dashing forward；
With left folding while and attachment spacers when right folding, the attachment spacers is socketed in the right end of the main paragraph, described
Left folding while left side against the second spring seat and the right folding while left side against the right side of the main paragraph；
First spring, first spring pocket is in the undergauge section, and the left end of first spring is against the right folding
The right end of side and first spring is against first spring base；
Second spring, the second spring are sleeved on first spring, and the left end of the second spring is against the left side
Flanging and the right end of the second spring are against the flanging；
End cap, the end cap are located on second valve casing to close the left opening of second valve opening；
The right end of hand push-and-pull rod, the hand push-and-pull rod is connected across the end cap with the left end of the piston to the right,
The hand push-and-pull rod is made of cylindrical bar and handle, and the axially spaced section that is equipped with is three in the circumferential wall of the cylindrical bar
Angular the first locating slot, the second locating slot and third locating slot；
Set screw, the set screw are threaded in the radial screw bore of the end cap, the set screw
Lower end is equipped with locating cone；
Wherein, the spool moves between first position, the second position and the third place, when the spool is at first
Its locating cone can be made to snap fit onto in second locating slot by rotating the set screw when setting, when the spool is second
Its locating cone can be made to snap fit onto in first locating slot by rotating the set screw when position, when the spool is the
Its locating cone can be made to snap fit onto in the third locating slot by rotating the set screw when three positions..
Advantageously, when the spool is in the first position, the 5th hydraulic fluid port, the 6th hydraulic fluid port and described
Hand push-and-pull rod does not apply active force to the piston, and the spool makes first hydraulic fluid port, second hydraulic fluid port, described the
Three hydraulic fluid ports disconnect between any two with the 4th hydraulic fluid port.
Advantageously, when the spool is in the second position, the 6th hydraulic fluid port, the hand push-and-pull rod be not right
The piston applies active force, and the piston is by described in external force promotion piston overpowers inject by the 5th hydraulic fluid port the
One spring and the elastic force of the second spring move right, and then the spool is driven to move right, until the spool makes institute
State the first hydraulic fluid port pass sequentially through the through flow hole and the blind hole be connected with the 4th hydraulic fluid port, the spool make it is described second oil
Mouth is connected to the third hydraulic fluid port by the through-flow slot.
Advantageously, when the spool is in the third place, the 5th hydraulic fluid port, the hand push-and-pull rod be not right
The piston applies active force, and the piston is by described in external force promotion piston overpowers inject by the 6th hydraulic fluid port the
One spring and the elastic force of the second spring are moved to the left, and then drive the spool together with first spring base to moving to left
It is dynamic, until the spool makes first hydraulic fluid port and second hydraulic fluid port pass through described in the through-flow slot be connected to, the spool makes
Third hydraulic fluid port is connected to by first valve opening with the 4th hydraulic fluid port.
Advantageously, when the spool is in the second position, the 5th hydraulic fluid port, the 6th hydraulic fluid port be not to institute
It states piston and applies active force, the piston is pushed the piston gram by the thrust that the hand push-and-pull rod applies from left to right
The elastic force for taking first spring and the second spring moves right, and then the spool is driven to move right, until described
Spool makes first hydraulic fluid port pass sequentially through, and the through flow hole and the blind hole are connected with the 4th hydraulic fluid port, the spool makes institute
The second hydraulic fluid port is stated to be connected to by the through-flow slot with the third hydraulic fluid port.
Advantageously, when the spool is in the third place, the 5th hydraulic fluid port, the 6th hydraulic fluid port be not to institute
It states piston and applies active force, the piston is by the pulling force that the hand push-and-pull rod right-to-left applies to push piston overpowers institute
The elastic force for stating the first spring and the second spring is moved to the left, so drive the spool together with first spring base to
It moves left, until the spool makes first hydraulic fluid port pass through with second hydraulic fluid port, the through-flow slot is connected to, the spool makes
The third hydraulic fluid port is connected to by first valve opening with the 4th hydraulic fluid port.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
Fig. 1 is the schematic diagram of insert type change-over valve according to an embodiment of the invention；
Fig. 2 is the schematic diagram of the hand push-and-pull rod of insert type change-over valve according to an embodiment of the invention；
Fig. 3 is the schematic diagram of the set screw of insert type change-over valve according to an embodiment of the invention；
Fig. 4 is the schematic diagram of insert type change-over valve according to an embodiment of the invention.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings it is described in detail insert type change-over valve according to the ... of the embodiment of the present invention.
A kind of insert type change-over valve according to the ... of the embodiment of the present invention, including：First valve casing 1, spool 2, the first spring base 3,
Second spring seat 4, the second valve casing 5, piston 6, attachment spacers 7, the first spring 8, second spring 9, end cap 10, hand push-and-pull rod
11, set screw 12.
Specifically, there is the first valve opening for penetrating through the first valve casing 1 in left-right direction, first valve casing on the first valve casing 1
Side wall on there is arranged for interval in left-right direction and the first hydraulic fluid port B, the second hydraulic fluid port P that are connected to first valve opening and the
Three hydraulic fluid port A, the right opening of first valve opening are configured to the 4th hydraulic fluid port T.
Spool 2 can be movably located in first valve opening, have the blind hole 21 of opening to the right, spool 2 on spool 2
Side wall on there is the through flow hole 22 of connection blind hole 21, through flow hole 22 to have on the periphery wall of spool 2 adjacent to the left end of spool 2
Through-flow slot 23.
There is the left end of first spring base 3 flanging 31, the first spring base 3 to be contained in the left end and flanging of first valve opening
31 right side is resisted against the left side of the first valve casing 1, and the right end of the first spring base 3 has first through hole, the left side of spool 2
Against the right side of the first spring base 3.
The right side of second spring seat 4 is contained in the right side of second spring seat 4 against the left side of the first valve casing 1 and flanging 31
In end so that the first spring base 3 can be moved left and right relative to second spring seat 4 and so that the first spring base 3 relative to the first valve
Shell 1 can move left and right, and there is the left end of second spring seat 4 second through-hole, the aperture of second through-hole to be more than described first and lead to
The aperture in hole.
Second valve casing 5 has the second valve opening for penetrating through the second valve casing 5 in left-right direction, second spring seat 4 and the first valve
The left end of shell 1 coordinates in the right end of the second valve casing 5, has against second spring seat 4 on the internal perisporium of second valve opening
The stage portion 51 of left side.
Piston 6 can be movably located in the second valve casing 5, and the right end of piston 6 sequentially passes through second through-hole and institute
It states first through hole and is connected with the left end of spool 2, piston 6 includes the undergauge section 61 being adapted to the first through hole and with described
The main paragraph 62 of two through-holes adaptation, the part that main paragraph 62 is located at 4 left side of second spring seat have prominent stupefied 63, prominent stupefied 63 periphery
Face is adapted with the inner peripheral surface of second valve opening, is had the 5th hydraulic fluid port X for being located at prominent stupefied 63 left side on the second valve casing 5 and is located at
The 6th hydraulic fluid port Y on prominent stupefied 63 right side.
Attachment spacers 7 have left folding while and when right folding, attachment spacers 7 is socketed in the right end of main paragraph 62, the left folding side
Left side against the left side on second spring seat 4 and the right folding side against the right side of main paragraph 62.
First spring 8 is sleeved in undergauge section 61, and the left end of the first spring 8 is against the right folding side and the right side of the first spring 8
It holds against the first spring base 3.
Second spring 9 is sleeved on the first spring 8, and the left end of second spring 9 is against the left folding side and the right side of second spring 9
It holds against flanging 31.
End cap 10 is located on the second valve casing 5 to close the left opening of second valve opening.It is understood that prominent stupefied 63,
Space defined by second valve opening and end cap 10 constitutes left control chamber 5a, stupefied 63, second valve opening and second of dashing forward
Space defined by spring base 4 constitutes right control chamber 5b.
The right end of hand push-and-pull rod 11 is connected across end cap 10 with the left end of piston 6 to the right, and hand push-and-pull rod 11 is by cylinder
Bar 110 and handle 111 form, axially spaced be equipped with that section is triangle first in the circumferential wall of the cylindrical bar 110
Locating slot 112, the second locating slot 113 and third locating slot 114.
Set screw 12 is threaded in the radial screw bore of end cap 10, and the lower end of the set screw 12 is equipped with positioning
Cone 121.
Wherein, spool 2 moves between first position, the second position and the third place.What needs to be explained here is that described
First position is initial position as shown in Figure 1；The second position is that piston 6 receives outer force effect and is with the first position
Starting point moves from left to right, and to be moved from left to right with movable valve plug 2, (after external force disappears, piston 6 is in the first spring 8 and second
Band movable valve plug 2 is restored to initial position from the second position under the action of 9 restoring force of spring)；The third place is that piston 6 receives
Outer force effect is moved by starting point right-to-left of the first position, with the movement of band 2 right-to-left of movable valve plug (when external force disappears
Afterwards, the band movable valve plug 2 under the action of the first spring 8 and 9 restoring force of second spring of piston 6 is restored to initial bit from the third place
It sets).Its locating cone 121 can be made to snap fit onto second positioning by Rotating set screws 12 when spool 2 is in first position
In slot 113, its locating cone 121 can be made to snap fit onto described first by Rotating set screws 12 when spool 2 is in the second position
In locating slot 112, when spool 2 is in the third place its locating cone 121 can be made to snap fit onto by Rotating set screws 12 described
In third locating slot 114.
More specifically, when spool 2 is in the first position, by outer force effect, (i.e. the 5th hydraulic fluid port X is or not piston 6
Inject hydraulic oil in control chamber 5a to the left, while the 6th hydraulic fluid port Y does not also inject hydraulic oil in control chamber 5b to the right), spool 1 makes the
One hydraulic fluid port B, the second hydraulic fluid port P, third hydraulic fluid port B and the 4th hydraulic fluid port T are disconnected between any two.
When spool 2 is in the second position, piston 6 is injected the external force of left control chamber 5a (i.e. by by the 5th hydraulic fluid port X
The pressure of hydraulic oil, the fluid in right control chamber 5b is from the 6th hydraulic fluid port Y discharge at this time) push piston 6 to overcome the first spring 8 and the
The elastic force of two springs 9 moves right, and then moves right with movable valve plug 2, until so that the first hydraulic fluid port B is passed sequentially through through-flow for spool 2
Hole 22 and blind hole 21 connect with the 4th hydraulic fluid port T-phase, spool 2 makes the second hydraulic fluid port P pass through through-flow slot 23 with third hydraulic fluid port A to be connected to.
When spool 2 is in the third place, piston 6 is by external force (the i.e. liquid for injecting right cavity 5b by the 6th hydraulic fluid port Y
The pressure of pressure oil, the fluid in left cavity 5a is from the 5th hydraulic fluid port X discharge at this time) push piston 6 to overcome the first spring 8 and the second bullet
The elastic force of spring 9 is moved to the left, and then is moved to the left together with movable valve plug 2 and the first spring base 3, until spool 2 makes the first hydraulic fluid port B
It is connected to by through-flow slot 23 with the second hydraulic fluid port P, spool 2 makes third hydraulic fluid port A pass through first valve opening to be connected to the 4th hydraulic fluid port T.
Three cases above may be implemented hydraulic control by the switching of the 5th hydraulic fluid port X, the 6th hydraulic fluid port Y pressure, control pushed to live
6 band movable valve plug 2 of plug is moved left and right to realize commutation function.
When controlling commutation according to handle, then the 5th hydraulic fluid port X, the 6th hydraulic fluid port Y are not connected to hydraulic oil, to realize to basis
A kind of insert type change-over valve of the embodiment of the present invention manually controls.It is specific as follows：
When spool 2 is in the first position, not by the outer force effect from hand push-and-pull rod, spool 1 makes piston 6
First hydraulic fluid port B, the second hydraulic fluid port P, third hydraulic fluid port B and the 4th hydraulic fluid port T are disconnected between any two.
When spool 2 is in the second position, piston 6 is by the thrust that hand push-and-pull rod 11 applies from left to right to push away
Piston 6 overcomes the elastic force of the first spring 8 and second spring 9 to move right, and then moves right with movable valve plug 2, until spool 2
So that the first hydraulic fluid port B is passed sequentially through through flow hole 22 and blind hole 21 and the 4th hydraulic fluid port T-phase company, spool 2 makes the second hydraulic fluid port P and third hydraulic fluid port
A is connected to by through-flow slot 23.
When spool 2 is in the third place, the pulling force that piston 6 is applied by 11 right-to-left of hand push-and-pull rod is to draw
Piston 6 overcomes the elastic force of the first spring 8 and second spring 9 to be moved to the left, and then together with movable valve plug 2 and the first spring base 3
It is moved to the left, until spool 2 makes the first hydraulic fluid port B and the second hydraulic fluid port P so that third hydraulic fluid port A is passed through by the connection of through-flow slot 23, spool 2
First valve opening is connected to the 4th hydraulic fluid port T.
Three cases above may be implemented closely to be manually operated, when manual operation makes spool by hand push-and-pull rod 11
When in any position, its locating cone 121 can be made to snap fit onto in the corresponding locating slot in this position by Rotating set screws 12, this
Sample can make operating personnel laborsaving and can have energy to go to operate other valves.
A kind of insert type change-over valve according to the ... of the embodiment of the present invention, which manually controls, to be had the following advantages：
(1) plug-in designs, is simple in structure, being convenient for Integration Design；
(2) it can both be controlled with hydraulic control, can also realize and manually control.
(3), can be when manually controlling by the way that the set screw 12 of radial direction is arranged on end cap, adjusting screw 12 makes
Its locating cone 121 snaps fit onto the locating slot on hand push-and-pull rod 11, to realize positioning, is conveniently operated personnel's use.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on ... shown in the drawings or
Position relationship is merely for convenience of description of the present invention and simplification of the description, and does not indicate or imply the indicated device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the present invention, the meaning of " plurality " is two or more, unless separately
There is clearly specific restriction.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be that machinery connects
It connects, can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary in two elements
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature can be with "above" or "below" second feature
It is that the first and second features are in direct contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is directly under or diagonally below the second feature, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are within the scope of the invention to above-mentioned implementation
Example is changed, changes, replacing and modification, each falls within protection scope of the present invention.
Claims (6)
1. a kind of insert type change-over valve, which is characterized in that including：
First valve casing, has the first valve opening for penetrating through first valve casing in left-right direction on first valve casing, and described first
On the side wall of valve casing have in left-right direction arranged for interval and be connected to first valve opening the first hydraulic fluid port, the second hydraulic fluid port and
The right opening of third hydraulic fluid port, first valve opening is configured to the 4th hydraulic fluid port；
Spool, the spool can be movably located in first valve opening, have the blind hole of opening to the right on the spool,
There is the through flow hole for being connected to the blind hole, the through flow hole is adjacent to the left end of the spool, the valve on the side wall of the spool
There is through-flow slot on the periphery wall of core；
There is left end the first spring base of flanging, first spring base to be contained in the left end of first valve opening and the flanging
Right side be resisted against the left side of first valve casing, the right end of first spring base has first through hole, the spool
Left side against the right side of first spring base；
Second spring seat, the right side of the second spring seat are contained in against the left side of first valve casing and the flanging
In the right end of the second spring seat, the left end of the second spring seat has the second through-hole, the aperture of second through-hole big
In the aperture of the first through hole；
Second valve casing, second valve casing have the second valve opening for penetrating through second valve casing in left-right direction, second bullet
The left end of spring abutment and first valve casing coordinates in the right end of second valve casing, has on the internal perisporium of second valve opening
There is the stage portion against the left side of the second spring seat；
Piston, the piston can be movably located in second valve casing, and the right end of the piston sequentially passes through described
Two through-holes and the first through hole are simultaneously connected with the left end of the spool, and the piston includes the contracting being adapted to the first through hole
Diameter section and the main paragraph being adapted to second through-hole, the main paragraph are located at the part on the left of the second spring seat with prominent
Stupefied, the stupefied peripheral surface of dashing forward is adapted with the inner peripheral surface of second valve opening, is had on second valve casing and is located at described dash forward
5th hydraulic fluid port in stupefied left side and positioned at it is described dash forward stupefied right side the 6th hydraulic fluid port；
With left folding while and attachment spacers when right folding, the attachment spacers be socketed in the right end of the main paragraph, the left folding
While left side against the second spring seat and the right folding while left side against the right side of the main paragraph；
First spring, first spring pocket in the undergauge section, the left end of first spring against the right folding side and
The right end of first spring is against first spring base；
Second spring, the second spring are sleeved on first spring, and the left end of the second spring is against the left folding side
And the right end of the second spring is against the flanging；
End cap, the end cap are located on second valve casing to close the left opening of second valve opening；
The right end of hand push-and-pull rod, the hand push-and-pull rod is connected across the end cap with the left end of the piston to the right, described
Hand push-and-pull rod is made of cylindrical bar and handle, and the axially spaced section that is equipped with is triangle in the circumferential wall of the cylindrical bar
The first locating slot, the second locating slot and third locating slot；
Set screw, the set screw are threaded in the radial screw bore of the end cap, the lower end of the set screw
Equipped with locating cone；
Wherein, the spool moves between first position, the second position and the third place, when the spool is in first position
Its locating cone can be made to snap fit onto in second locating slot by rotating the set screw, when the spool is in the second position
When its locating cone can be made to snap fit onto in first locating slot by rotating the set screw, when the spool is in third position
Its locating cone can be made to snap fit onto in the third locating slot by rotating the set screw when setting.
2. a kind of insert type change-over valve according to claim 1, which is characterized in that when the spool is in described first
When setting, the 5th hydraulic fluid port, the 6th hydraulic fluid port and the hand push-and-pull rod do not apply active force to the piston, described
Spool makes first hydraulic fluid port, second hydraulic fluid port, the third hydraulic fluid port and the 4th hydraulic fluid port disconnect between any two.
3. a kind of insert type change-over valve according to claim 1, which is characterized in that when the spool is in the second
When setting, the 6th hydraulic fluid port, the hand push-and-pull rod do not apply active force to the piston, and the piston is by by described the
The external force of five hydraulic fluid ports injection pushes the first spring and the elastic force of the second spring described in the piston overpowers to move right, in turn
Drive the spool to move right, until the spool make first hydraulic fluid port pass sequentially through the through flow hole and the blind hole with
4th hydraulic fluid port is connected, the spool makes second hydraulic fluid port pass through the through-flow slot with the third hydraulic fluid port to be connected to.
4. a kind of insert type change-over valve according to claim 1, which is characterized in that when the spool is in the third position
When setting, the 5th hydraulic fluid port, the hand push-and-pull rod do not apply active force to the piston, and the piston is by by described the
The external force of six hydraulic fluid ports injection pushes the first spring and the elastic force of the second spring described in the piston overpowers to be moved to the left, in turn
The spool is driven to be moved to the left together with first spring base, until the spool makes first hydraulic fluid port and described second
Hydraulic fluid port makes the third hydraulic fluid port pass through first valve opening and the 4th hydraulic fluid port company by the through-flow slot connection, the spool
It is logical.
5. a kind of insert type change-over valve according to claim 1, which is characterized in that when the spool is in the second
When setting, the 5th hydraulic fluid port, the 6th hydraulic fluid port do not apply active force to the piston, and the piston is pushed away manually by described
The thrust that pull rod applies from left to right is to push the first spring and the elastic force of the second spring described in the piston overpowers to the right
It is mobile, and then the spool is driven to move right, until the spool make first hydraulic fluid port pass sequentially through the through flow hole and
The blind hole is connected with the 4th hydraulic fluid port, the spool makes second hydraulic fluid port pass through the through-flow slot with the third hydraulic fluid port
Connection.
6. a kind of insert type change-over valve according to claim 1, which is characterized in that when the spool is in the third position
When setting, the 5th hydraulic fluid port, the 6th hydraulic fluid port do not apply active force to the piston, and the piston is pushed away manually by described
Pull rod right-to-left apply pulling force to push the first spring and the elastic force of the second spring described in piston overpowers to be moved to the left,
And then the spool is driven to be moved to the left together with first spring base, until the spool makes first hydraulic fluid port and described
Second hydraulic fluid port makes the third hydraulic fluid port pass through first valve opening and the 4th oil by the through-flow slot connection, the spool
Mouth connection.
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| CN201810612367.7A CN108413074B (en) | 2018-06-14 | 2018-06-14 | A kind of insert type change-over valve |
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| CN201810612367.7A CN108413074B (en) | 2018-06-14 | 2018-06-14 | A kind of insert type change-over valve |
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| CN108413074B CN108413074B (en) | 2019-07-16 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108953713A (en) * | 2018-08-22 | 2018-12-07 | 东莞海特帕沃液压科技有限公司 | Flow type balanced valve |
| CN108953269A (en) * | 2018-08-24 | 2018-12-07 | 东莞海特帕沃液压科技有限公司 | A kind of inserted valve |
| CN109268339A (en) * | 2018-11-26 | 2019-01-25 | 李军 | A kind of switching valve for small hydraulic machine |
| CN110056703A (en) * | 2019-05-07 | 2019-07-26 | 宁波万安股份有限公司 | Gas pressure regulator, governor pressure conversion device |
| CN110848434A (en) * | 2019-11-15 | 2020-02-28 | 东莞海特帕沃液压科技有限公司 | Safety valve |
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|---|---|
| CN108413074B (en) | 2019-07-16 |
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Effective date of registration: 20190624 Address after: 226600 Shuanglou Industrial Park, Qutang Town, Haian County, Nantong City, Jiangsu Province (Liuwei Village) Applicant after: Jiangsu Jinshengyuan Special Valves Co., Ltd. Address before: 523000 Dongguan City, Guangdong Province, Songshan Lake High-tech Industrial Development Zone Headquarters, No. 2, No. 1 District, No. 2 (Cluster Registration) Applicant before: Dongguan hate Paavo Hydraulic Technology Co., Ltd. |
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