CN107990011B - A kind of throttle valve - Google Patents
A kind of throttle valve Download PDFInfo
- Publication number
- CN107990011B CN107990011B CN201711209751.4A CN201711209751A CN107990011B CN 107990011 B CN107990011 B CN 107990011B CN 201711209751 A CN201711209751 A CN 201711209751A CN 107990011 B CN107990011 B CN 107990011B
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- CN
- China
- Prior art keywords
- valve
- cavity portion
- spool
- throttle valve
- logical
- 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.)
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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
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- 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, it include: valve body, spool and the adjusting knob being connect with the spool, influent stream channel and out circulation road are offered in the valve body, the influent stream channel and between circulation road it is communicated with throttling passage out, spool is located in the throttling passage, the throttling passage includes the first cavity portion being sequentially communicated, second cavity portion and two logical floating junctions, first cavity portion is connected to influent stream channel, the bottom end of second cavity portion connects the first passage mouth of two logical floating junctions, the second channel mouth of two logical floating junctions is connected to circulation road out；The spool includes the valve stem being connected on adjusting knob and the valve head positioned at valve stem one end；The bottom end of the two logical floating junction is connected with the movable block in limit chamber, and the limit chamber is located at the bottom of the valve body, and return spring is equipped between movable block and the bottom surface of limit chamber.The throttle valve can be improved flow degree of regulation.
Description
Technical field
The present invention relates to valves, and in particular to a kind of throttle valve on excavator oil pipe.
Background technique
Throttle valve mostly includes valve body, spool, the adjusting knob connecting with the spool and is connected in the prior art
Influent stream channel and circulation road, return spring are usually to be set between adjusting knob and spool out, such structure make even if
Rotation of adjustment knob, spool still will receive the active force of return spring, can only be by carrying out enough rotations just to adjusting knob
Spool can be made to be gradually opened or close, influence very much the precision adjusted.
Summary of the invention
For the deficiencies in the prior art, the present invention provides a kind of throttle valve that can be improved flow degree of regulation.
The technical solution provided according to the present invention, a kind of throttle valve, comprising: valve body, spool and connect with the spool
Adjusting knob, offer influent stream channel and out circulation road in the valve body, be connected between the influent stream channel and circulation road out
There is throttling passage, spool is located in the throttling passage, and the adjusting knob is able to drive spool and moves in throttling passage
Dynamic, the throttling passage includes the first cavity portion being sequentially communicated, the second cavity portion and two logical floating junctions, first cavity
Portion is connected to influent stream channel, and the bottom end of second cavity portion connects the first passage mouth of two logical floating junctions, and two logical float connect
The second channel mouth of head is connected to circulation road out；The spool include the valve stem being connected on adjusting knob and be located at valve rod
The valve head of portion one end, the valve head are the frustum body cooperated with second cavity portion；The two logical floating junction
Bottom end 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 junction of valve stem is formed with the limited step of a circle and limiting slot cooperation.
Further, the limited step be equipped with the first sealing ring, the limiting slot be equipped with described and first is close
The first seal groove that seal matches.
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 circumferential surface 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 located at two logical floating junctions
Upper end, second channel mouth are located at the left end of two logical floating junctions.
Further, the circumferential surface 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, has following advantages: its
One, movable block and return spring positioned at two logical floating junction bottom ends can help that this hair can also be improved while adjusting knob return
Bright flow degree of regulation.Second, the cooperation of the limiting slot and limited step can be played while limiting valve core movement
Good sealing effect enables spool to block the second cavity portion completely, plays good restriction effect, first sealing
The cooperation of circle and the first seal groove can further improve restriction effect.
Detailed description of the invention
Fig. 1 is schematic diagram of internal structure of the invention.
Fig. 2 is the enlarged diagram of part A in Fig. 1.
1. valve body, 2. spools, 2-1. valve stem, 2-2. valve head, 3. adjusting knobs, 4. influent stream channels, 5. go out circulation road,
The first cavity portion of 6-1., the second cavity portion 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.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.Wherein identical components are presented with like reference characters.It needs to illustrate
It is that word "front", "rear" used in the following description, "left", "right", "up" and "down" refer to the direction in attached drawing.It uses
Word "inner" and "outside" refer respectively to the direction towards or away from geometric center of specific component.
As depicted in figs. 1 and 2, a kind of throttle valve, comprising: valve body 1, spool 2 and the adjusting rotation being connect with the spool 2
Button 3 offers influent stream channel 4 and out circulation road 5 in the valve body 1, and 1 two sides of valve body offer flow inlet and outflow port respectively,
The flow inlet is connected to influent stream channel 4, and outflow port is connected to circulation road 5 out, between the influent stream channel 4 and out circulation road 5
It is communicated with throttling passage, the spool 2 is located in throttling passage, and the adjusting knob 3 is able to drive spool 2 and leads in throttling
It is moved in road, the throttling passage includes the first cavity portion 6-1, the second cavity portion 6-2 and two logical floating junctions being sequentially communicated
6-3, the first cavity portion 6-1 are connected to influent stream channel 4, and the bottom end of the second cavity portion 6-2 connects two logical floating junctions
The first passage mouth of 6-3, and the first passage mouth inner surface of the bottom end of the second cavity portion 6-2 and two logical floating junction 6-3 cooperate,
The second channel mouth of two logical floating junction 6-3 is connected to circulation road 5 out, and the spool 2 includes the valve being connected on adjusting knob 3
Bar portion 2-1 and valve head 2-2 positioned at the one end valve stem 2-1, the valve head 2-2 is to match with the second cavity portion 6-2
The frustum body of conjunction, the valve head 2-2 is that frustoconical body can be improved flow degree of regulation of the invention, so that adjusting
Flexibly；The bottom end of the two logical floating junction 6-3 is connected with the movable block 8 in limit chamber 7, and the limit chamber 7 is located at described
The bottom end of valve body 1 is equipped with return spring 9 between movable block 8 and the bottom surface of limit chamber 7.Work positioned at two bottom ends logical floating junction 6-3
Motion block 8 and return spring 9 can help that flow degree of regulation of the invention can also be improved while 3 return of adjusting knob, because existing
Having the return spring 9 in technology is usually to be set between adjusting knob 3 and spool 2, and such structure to adjust even if rotation
Knob 3, spool 2 still will receive the active force of return spring 9, so that can only carry out enough rotations to adjusting knob 3 can just make
It obtains spool 2 to be gradually opened or close, influences 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 of a circle and the limiting slot 10 cooperation is formed with the junction of valve stem 2-1.The limiting slot 10 and limit
The cooperation of position step 11 can play good sealing effect while limiting spool 2 and moving, and spool 2 is blocked 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
Equipped with the first seal groove matched with described and the first sealing ring, the cooperation of first sealing ring and the first seal groove can
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 in second seal groove 12
Circle 13, second sealing ring 13 is slidably contacted the surfaces with the first cavity portion 6-1's, second seal groove 12 and the first cavity
The surface of portion 6-1 cooperates, and can be effectively prevented fluid uplink.
The circumferential surface of the valve head 2-2 is curved surface, and the shape of the longitudinal section valve head 2-2 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 located at the upper end of two logical floating junction 6-3, and second channel mouth is located at the right end of two logical floating junction 6-3.
The circumferential surface 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 lower half portion of movable block 8 is located in the top half of return spring 9.
The course of work of the invention is as follows:
Fluid is flowed into from flow inlet, by influent stream channel 4, throttling passage and circulation road 5 out, is flowed out from outflow port.Turn
Adjusting knob 3, so that adjusting knob 3 pushes the valve stem 2-1 of spool 2 to the first cavity portion 6-1 or more along throttling passage
It is mobile, when valve stem 2-1 is moved downward to position as shown in Figure 1 to along the first cavity portion 6-1 of throttling passage, spool 2
Valve head 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 limit
The first seal groove tight fit at 10 position of slot of position, so that block fluid flows into influent stream channel 4, at this point, the bottom end of valve head 2-2
Two logical floating junction 6-3 are compressed downwards, so that return spring 9 is in confined state.
When valve stem 2-1 is gradually moved up from position as shown in Figure 1 along the first cavity portion 6-1 of throttling passage, return
Position spring 9 gradually return, due to limit chamber 7 to the limitation of movable block 8 so that 9 return of return spring is limited, gradually taken off in valve head 2-2
Floating junction 6-3 logical from two, fully opens so that fluid flow is gradually increased to spool 2.
It should be understood by those ordinary skilled in the art that: the above is only a specific embodiment of the present invention, and
It is not used in the limitation present invention, all any modification, equivalent substitution, improvement and etc. within purport of the invention, done should all include
Within protection scope of the present invention.
Claims (7)
1. a kind of throttle valve, comprising: valve body (1), spool (2) and the adjusting knob (3) being connect with the spool (2), it is described
Influent stream channel (4) and out circulation road (5) are offered in valve body (1), are connected between the influent stream channel (4) and circulation road out (5)
There is throttling passage, spool (2) is located in the throttling passage, and the adjusting knob (3) is able to drive spool (2) and is throttling
It is moved in channel, it is characterised in that:
The throttling passage includes the first cavity portion (6-1) being sequentially communicated, the second cavity portion (6-2) He Liangtong floating junction
(6-3), first cavity portion (6-1) are connected to influent stream channel (4), and the bottom end connection two of second cavity portion (6-2) is logical
The second channel mouth of the first passage mouth of floating junction (6-3), two logical floating junctions (6-3) is connected to circulation road out (5)；It is described
Spool (2) includes the valve stem (2-1) being connected on adjusting knob (3) and the valve head (2- for being located at the one end valve stem (2-1)
2), the valve head (2-2) is the frustum body cooperated with second cavity portion (6-2)；The two logical floating junction (6-
3) bottom end is connected with the movable block (8) in limit chamber (7), and the limit chamber (7) is located at the bottom of the valve body (1), living
Return spring (9) are equipped between motion block (8) and the bottom surface of limit chamber (7).
2. a kind of throttle valve as described in claim 1, which is characterized in that first cavity portion (6-1) and the second cavity portion
The junction of (6-2) is formed with a circle limiting slot (10), and valve head (2-2) and the junction of valve stem (2-1) are formed with a circle
With the limited step (11) of the limiting slot (10) cooperation.
3. a kind of throttle valve as claimed in claim 2, which is characterized in that the limited step (11) is equipped with the first sealing
Circle, the limiting slot (10) are equipped with the first seal groove matched with first sealing ring.
4. a kind of throttle valve as described in claim 1, which is characterized in that the valve stem (2-1) of the spool (2) is equipped with the
Two seal grooves (12) are equipped with the second sealing ring (13) in second seal groove (12), second sealing ring (13) and first
Cavity portion (6-1's) slidably contacts the surfaces.
5. a kind of throttle valve as described in claim 1, which is characterized in that the circumferential surface of the valve head (2-2) is curved surface, and valve
The shape of the longitudinal section head (2-2) is inverted trapezoidal.
6. a kind of throttle valve as described in claim 1, which is characterized in that the two passes of two logical floating junctions (6-3) are mutual
Vertically, first passage mouth is located at the upper end of two logical floating junctions (6-3), and second channel mouth is located at two logical floating junctions (6-3)
Left end.
7. a kind of throttle valve as described in claim 1, which is characterized in that the circumferential surface of the movable block (8) is equipped with a circle bullet
Spring abutment (14), the upper end of return spring (9) are pressed under spring base (14).
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 CN107990011A (en) | 2018-05-04 |
| CN107990011B true 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 |
|---|---|
| CN107990011A (en) | 2018-05-04 |
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