CN107990011A - A kind of throttle valve - Google Patents
A kind of throttle valve Download PDFInfo
- Publication number
- CN107990011A CN107990011A CN201711209751.4A CN201711209751A CN107990011A CN 107990011 A CN107990011 A CN 107990011A CN 201711209751 A CN201711209751 A CN 201711209751A CN 107990011 A CN107990011 A CN 107990011A
- Authority
- CN
- China
- Prior art keywords
- valve
- cavity portion
- circulation road
- spool
- logical floating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The present invention provides a kind of throttle valve, including：Valve body, spool and the adjusting knob being connected with the spool, offered in the valve body into circulation road and go out circulation road, it is described into circulation road and to go out between circulation road to be communicated with throttling passage, spool is located in the throttling passage, the throttling passage includes the first cavity portion, the second cavity portion and two logical floating junctions being sequentially communicated, first cavity portion is connected with into circulation road, the first passage mouth of the two logical floating junction of bottom connection of second cavity portion, the second channel mouth of two logical floating junctions are connected with going out circulation road；The spool includes being connected to the valve stem on adjusting knob and the valve head positioned at valve stem one end；The bottom of described two logical floating junctions is connected with the movable block in limit chamber, and the limit chamber is located at the bottom of the valve body, return spring is equipped between movable block and the bottom surface of limit chamber.The throttle valve can improve flow-rate adjustment precision.
Description
Technical field
The present invention relates to valve, and in particular to a kind of throttle valve on excavator oil pipe.
Background technology
Throttle valve mostly includes valve body, spool, the adjusting knob being connected with the spool and is connected in the prior art
Into circulation road and go out circulation road, return spring is typically to be arranged between adjusting knob and spool, even if such structure causes
Rotation of adjustment knob, spool still can be subject to the active force of return spring, can only be by carrying out enough rotations just to adjusting knob
Spool can be caused to be gradually opened or close, influence very much the precision adjusted.
The content of the invention
For the deficiencies in the prior art, the present invention provides a kind of throttle valve that can improve flow-rate adjustment precision.
The technical solution provided according to the present invention, a kind of throttle valve, including：Valve body, spool and it is connected with the spool
Adjusting knob, offer in the valve body into circulation road and go out circulation road, it is described to be connected into circulation road with going out between circulation road
There is throttling passage, spool is located in the throttling passage, and the adjusting knob can be moved with movable valve plug in throttling passage
Dynamic, the throttling passage includes the first cavity portion, the second cavity portion and two logical floating junctions being sequentially communicated, first cavity
Portion is connected with into circulation road, and the first passage mouth of the two logical floating junction of bottom connection of second cavity portion, two logical floatings connect
The second channel mouth of head is connected with going out circulation road；The spool includes the valve stem being connected on adjusting knob and positioned at valve rod
The valve head of portion one end, the valve head are the frustum body coordinated with second cavity portion；Described two logical floating junctions
Bottom be connected with the movable block in limit chamber, the limit chamber is located at the bottom of the valve body, movable block and limit chamber
Return spring is equipped between bottom surface.
Further, the junction of first cavity portion and the second cavity portion is formed with a circle limiting slot, valve head with
The limited step that the junction of valve stem coordinates formed with a circle with the limiting slot.
Further, the limited step is equipped with the first sealing ring, the limiting slot be equipped with it is described and first is close
Matched first seal groove of seal.
Further, the valve stem of the spool is equipped with the second seal groove, and it is close to be equipped with second in second seal groove
Seal, second sealing ring are slidably contacted the surfaces with the first cavity portion.
Further, the side face of the valve head is curved surface, and the shape of valve head longitudinal section is inverted trapezoidal.
Further, the two passes of two logical floating junctions are mutually perpendicular to, and first passage mouth is positioned at two logical floating junctions
Upper end, left end of the second channel mouth positioned at two logical floating junctions.
Further, the side face of the movable block is equipped with a coil spring seat, and the upper end of return spring is pressed under spring base.
From the above as can be seen that throttle valve provided by the invention compared with prior art, possesses advantages below：Its
One, the movable block positioned at two logical floating junction bottoms with return spring can help that this hair can also be improved while adjusting knob return
Bright flow-rate adjustment precision.Second, the cooperation of the limiting slot and limited step can be played while valve core movement is limited
Good sealing effect so that spool can block the second cavity portion completely, play good restriction effect, first sealing
The cooperation of circle and the first seal groove can further improve restriction effect.
Brief description of the drawings
Fig. 1 is the internal structure schematic diagram of the present invention.
Fig. 2 is the enlarged diagram of part A in Fig. 1.
1. valve body, 2. spools, 2-1. valve stems, 2-2. valve heads, 3. adjusting knobs, 4. go out circulation road into circulation road, 5.,
The first cavity portions of 6-1., the second cavity portions of 6-2., 6-3. two lead to floating junction, 7. limit chambers, 8. movable blocks, 9. return springs, and 10.
Limiting slot, 11. limited steps, 12. second seal grooves, 13. second sealing rings, 14. spring bases.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.Wherein identical parts are presented with like reference characters.Need what is illustrated
It is that word "front", "rear" used in the following description, "left", "right", "up" and "down" refer to the direction in attached drawing.Use
Word " interior " and " outer " refer respectively to towards or away from the direction of particular elements geometric center.
As depicted in figs. 1 and 2, a kind of throttle valve, including：Valve body 1, spool 2 and the adjusting rotation being connected with the spool 2
Button 3, offers in the valve body 1 into circulation road 4 and goes out circulation road 5, and 1 both sides of valve body offer flow inlet and outflow port respectively,
The flow inlet is connected with into circulation road 4, and outflow port is connected with going out circulation road 5, described into circulation road 4 and to go out between circulation road 5
Throttling passage is communicated with, the spool 2 is located in throttling passage, and the adjusting knob 3 can be logical in throttling with movable valve plug 2
Moved in road, the first cavity portion 6-1, the second cavity portion 6-2 and two that the throttling passage includes being sequentially communicated lead to floating junction
6-3, the first cavity portion 6-1 are connected with into circulation road 4, the two logical floating junction of bottom connection of the second cavity portion 6-2
The first passage mouth of 6-3, and the bottom of the second cavity portion 6-2 and the first passage mouth inner surface of two logical floating junction 6-3 coordinate,
The second channel mouth of two logical floating junction 6-3 is connected with going out circulation road 5, and the spool 2 includes the valve being connected on adjusting knob 3
The bar portion 2-1 and valve head 2-2 positioned at valve stem 2-1 one end, the valve head 2-2 is match somebody with somebody with the second cavity portion 6-2
The frustum body of conjunction, the valve head 2-2 are the flow-rate adjustment precision that frustoconical body can improve the present invention so that are adjusted
Flexibly；The bottom of described two logical floating junction 6-3 is connected with the movable block 8 in limit chamber 7, and the limit chamber 7 is positioned at described
Return spring 9 is equipped between the bottom surface of the bottom of valve body 1, movable block 8 and limit chamber 7.Work positioned at two logical floating junction 6-3 bottoms
Motion block 8 can help that the flow-rate adjustment precision of the present invention can also be improved while 3 return of adjusting knob with return spring 9, because existing
It is typically to be arranged between adjusting knob 3 and spool 2 to have the return spring 9 in technology, even if such structure causes rotation to adjust
Knob 3, spool 2 still can be subject to the active force of return spring 9 so that can only carry out enough rotations to adjusting knob 3 can just make
Obtain spool 2 to be gradually opened or close, influence very much the precision adjusted.
The junction of the first cavity portion 6-1 and the second cavity portion 6-2 are formed with a circle limiting slot 10, valve head 2-2
The limited step 11 coordinated with the junction of valve stem 2-1 formed with a circle with the limiting slot 10.The limiting slot 10 and limit
The cooperation of position step 11 can play good sealing effect while limiting spool 2 and moving so that spool 2 can block up completely
Live in the second cavity portion 6-2, plays good restriction effect, and the limited step 11 is equipped with sealing ring, on the limiting slot 10
Can equipped with the cooperation with matched first seal groove of described and the first sealing ring, first sealing ring and the first seal groove
Further improve restriction effect.
The valve stem 2-1 of the spool 2 is equipped with the second seal groove 12, and the second sealing is equipped with second seal groove 12
Circle 13, second sealing ring 13 is slidably contacted the surfaces with the first cavity portion 6-1's, 12 and first cavity of the second seal groove
The surface of portion 6-1 coordinates, and can effectively prevent fluid uplink.
The side face of the valve head 2-2 is curved surface, and the shape of valve head 2-2 longitudinal sections is inverted trapezoidal.
The two passes of two logical floating junction 6-3 are mutually perpendicular to.As shown in Figure 1, the first passage of two logical floating junction 6-3
Mouth is positioned at the upper ends of two logical floating junction 6-3, right ends of the second channel mouth positioned at two logical floating junction 6-3.
The side face of the movable block 8 is equipped with a coil spring seat 14, and the upper end of return spring 9 is pressed under spring base 14, described
The latter half of movable block 8 is located in the top half of return spring 9.
The course of work of the present invention is as follows：
Fluid is flowed into from flow inlet, by into circulation road 4, throttling passage and going out circulation road 5, is flowed out from outflow port.Turn is adjusted
Knob 3 so that adjusting knob 3 promotes the valve stem 2-1 of spool 2 to be moved up and down to along the first cavity portion 6-1 of throttling passage,
When valve stem 2-1 is moved downward to position as shown in Figure 1, the valve head of spool 2 to along the first cavity portion 6-1 of throttling passage
2-2 clogs the second cavity portion 6-2 of throttling passage completely, at this time the first sealing ring at 11 position of limited step and limiting slot 10
The first seal groove tight fit at position, so that block fluid is flowed into circulation road 4, at this time, the bottom of valve head 2-2 is pressed downward
Tight two logical floating junction 6-3, so that return spring 9 is in confined state.
When first cavity portion 6-1s of the valve stem 2-1 from position as shown in Figure 1 along throttling passage is gradually moved up, return
Position 9 gradual return of spring, since limitation of the limit chamber 7 to movable block 8 make it that 9 return of return spring is limited, gradually takes off in valve head 2-2
Floating junction 6-3 logical from two so that fluid flow gradually increases to spool 2 and opens completely.
Those of ordinary skills in the art should understand that：The foregoing is merely the specific embodiment of the present invention, and
The limitation present invention is not used in, all any modification, equivalent substitution, improvement and etc. within the purport of the present invention, done, should all include
Within protection scope of the present invention.
Claims (7)
1. a kind of throttle valve, including：Valve body（1）, spool（2）And with the spool（2）The adjusting knob of connection（3）, it is described
Valve body（1）In offer into circulation road（4）With go out circulation road（5）, it is described into circulation road（4）With going out circulation road（5）Between connect
There are throttling passage, spool（2）In the throttling passage, and the adjusting knob（3）Can be with movable valve plug（2）Throttling
Moved in passage, it is characterised in that：
The throttling passage includes the first cavity portion being sequentially communicated（6-1）, the second cavity portion（6-2）With two logical floating junctions
（6-3）, first cavity portion（6-1）With into circulation road（4）Connection, second cavity portion（6-2）Bottom connection two it is logical
Floating junction（6-3）First passage mouth, two logical floating junctions（6-3）Second channel mouth and go out circulation road（5）Connection；It is described
Spool（2）Including being connected to adjusting knob（3）On valve stem（2-1）And positioned at valve stem（2-1）The valve head of one end（2-
2）, the valve head（2-2）For with second cavity portion（6-2）The frustum body of cooperation；Described two logical floating junctions（6-
3）Bottom be connected with positioned at limit chamber（7）In movable block（8）, the limit chamber（7）Positioned at the valve body（1）Bottom, it is living
Motion block（8）With limit chamber（7）Bottom surface between be equipped with return spring（9）.
A kind of 2. throttle valve as claimed in claim 1, it is characterised in that first cavity portion（6-1）With the second cavity
Portion（6-2）Junction formed with one circle limiting slot（10）, valve head（2-2）With valve stem（2-1）Junction formed with one
Circle and the limiting slot（10）The limited step of cooperation（11）.
A kind of 3. throttle valve as claimed in claim 2, it is characterised in that the limited step（11）It is equipped with the first sealing
Circle, the limiting slot（10）It is equipped with and matched first seal groove of described and the first sealing ring.
A kind of 4. throttle valve as claimed in claim 1, it is characterised in that the spool（2）Valve stem（2-1）It is equipped with
Second seal groove（12）, second seal groove（12）In be equipped with the second sealing ring（13）, second sealing ring（13）With
One cavity portion（6-1）Slidably contact the surfaces.
A kind of 5. throttle valve as claimed in claim 1, it is characterised in that the valve head（2-2）Side face be curved surface, and
Valve head（2-2）The shape of longitudinal section is inverted trapezoidal.
A kind of 6. throttle valve as claimed in claim 1, it is characterised in that two logical floating junctions（6-3）Two passes phase
Mutually vertical, first passage mouth is positioned at two logical floating junctions（6-3）Upper end, second channel mouth is positioned at two logical floating junctions（6-3）
Left end.
A kind of 7. throttle valve as claimed in claim 1, it is characterised in that the movable block（8）Side face be equipped with one circle
Spring base（14）, return spring（9）Upper end be pressed in spring base（14）Under.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711209751.4A CN107990011B (en) | 2017-11-28 | 2017-11-28 | A kind of throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711209751.4A CN107990011B (en) | 2017-11-28 | 2017-11-28 | A kind of throttle valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107990011A true CN107990011A (en) | 2018-05-04 |
| CN107990011B CN107990011B (en) | 2019-05-17 |
Family
ID=62032231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711209751.4A Active CN107990011B (en) | 2017-11-28 | 2017-11-28 | A kind of throttle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107990011B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3652055A (en) * | 1970-11-24 | 1972-03-28 | Carrier Corp | Valve construction |
| CN101631977A (en) * | 2007-02-13 | 2010-01-20 | 莫克维尔德阀门公司 | Throttle valve |
| CN102032230A (en) * | 2010-12-04 | 2011-04-27 | 林友根 | Throttling valve |
| CN105065682A (en) * | 2015-09-07 | 2015-11-18 | 盐城工学院 | Cage sleeve type throttle valve |
| CN106368997A (en) * | 2016-10-26 | 2017-02-01 | 华东矿用设备有限公司 | One-way throttle valve for hydraulic system |
-
2017
- 2017-11-28 CN CN201711209751.4A patent/CN107990011B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3652055A (en) * | 1970-11-24 | 1972-03-28 | Carrier Corp | Valve construction |
| CN101631977A (en) * | 2007-02-13 | 2010-01-20 | 莫克维尔德阀门公司 | Throttle valve |
| CN102032230A (en) * | 2010-12-04 | 2011-04-27 | 林友根 | Throttling valve |
| CN105065682A (en) * | 2015-09-07 | 2015-11-18 | 盐城工学院 | Cage sleeve type throttle valve |
| CN106368997A (en) * | 2016-10-26 | 2017-02-01 | 华东矿用设备有限公司 | One-way throttle valve for hydraulic system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107990011B (en) | 2019-05-17 |
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