CN2898402Y - Two-way throttling valve - Google Patents
Two-way throttling valve Download PDFInfo
- Publication number
- CN2898402Y CN2898402Y CN 200620070429 CN200620070429U CN2898402Y CN 2898402 Y CN2898402 Y CN 2898402Y CN 200620070429 CN200620070429 CN 200620070429 CN 200620070429 U CN200620070429 U CN 200620070429U CN 2898402 Y CN2898402 Y CN 2898402Y
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- Prior art keywords
- valve
- nonreturn
- valve core
- restriction
- seats
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a two way throttle valve, can be directly arranged on oil conduit of hydraulic system to realize throttle governing in two direction, the throttle valve comprises valve body, characterized in that: two valve seats are equipped in the valve body, the two valve seats are end to end arranged. A valve seat comprises a-way valve core for forming into a-way valve and the other valve seat comprises two way valve cores for forming the two way valve. Adopting the two-way valve to displace the traditional two a-way valves, which has the advantages of cannot only keeping smaller valve body and space but also being convenient for installation and maintenance.
Description
(1) technical field
The utility model relates to a kind of valve.Specifically, be the bidirectional throttling valve that is directly installed on the hydraulic system oil circuit, is used for realizing coming and going throttle grverning on the both direction.
(2) background technique
At present in hydraulic system, for adapting to the round throttle grverning requirement of executive component (as oil cylinder), mostly adopt two one-way throttle valves oppositely to contact, thereby realize the setting of positive and negative both direction fluid flow, to change the advance and retreat speed of executive component (as oil cylinder).Though adopt two one-way throttle valves to carry out differential concatenation, can realize the advance and retreat speed of setting, change executive component such as the oil cylinder of positive and negative both direction fluid flow.But install owing to need two one-way throttle valves to carry out differential concatenation, make that the volume of throttle valve is big, it is more to take up room.Owing to need two one-way throttle valves to carry out the differential concatenation installation, installation and maintenance are all cumbersome again.
(3) model utility content
Problem to be solved in the utility model provides a kind of bidirectional throttling valve.This bidirectional throttling valve, volume is little, occupy little space, and installs easily and keeps in repair.
For addressing the above problem, the utility model is taked following technological scheme:
Bidirectional throttling valve of the present utility model comprises valve body.Be characterized in that said valve body is a tubular, two valve seats are arranged in it.Two valve seats also are tubular, and outer, internal thread are arranged respectively on their cylindrical and on the interior circle of valve body, and two valve seats are outer by this, internal thread is in the end-to-end screw-in valve body.Circular diameter is all greater than that two sections diameters at its two ends in the intermediate section of two valve seats, thereby forms circumferential step at their interior round two.Wherein: in the valve seat nonreturn valve core is arranged, this nonreturn valve core is cylindric, and its outer end diameter is greater than the outer end internal diameter of place valve seat.The nonreturn valve core inner end is conical, and the inner end internal diameter of its place valve seat is less than its non-conical section diameter.Nonreturn valve core and place valve base chamber vertically between be loosening shape and cooperate, leave the gap between the interior circle of its cylindrical and respective valve seat.There is radial direction through hole the centre of nonreturn valve core, and there is center hole its outer end, and this center hole and radial direction through hole connect.Two-way spool is arranged in another valve seat, and this two-way spool also is cylindric, and its two ends are taper shape, the outside of its two conical section respectively with the place valve seat in the circumferential step edge at circle two offset, and leave spacing between its inner end and nonreturn valve core.There is restriction the conical outside of nonreturn valve core, and the restriction two ends are communicated with said gap and spacing respectively.On the conical surface at two-way spool two ends vertical restriction is arranged all, with the corresponding intermediate section of this two vertical restriction one side be the plane.Wherein, the restriction flow area on the nonreturn valve core is less than the flow area of vertical restriction on the two-way spool, and the flow area of radial direction through hole on the nonreturn valve core and center hole is greater than the flow area of vertical restriction on the two-way spool.
Take such scheme, have the following advantages:
Because bidirectional throttling valve of the present utility model contains a valve body, and two valve seats are installed in the valve body, be useful on the nonreturn valve core that forms one-way valve in the valve seat, be useful on the two-way spool that forms two-way valve in another valve seat.Utilize a valve to replace two traditional one-way valves, not only the volume of valve body less, occupy little space, and be easy for installation and maintenance.
(4) description of drawings
Fig. 1 is a bidirectional throttling valve structural representation of the present utility model.
Fig. 2 is the A-A cross-sectional schematic of Fig. 1.
(5) embodiment
As depicted in figs. 1 and 2, bidirectional throttling valve of the present utility model contains a valve body 2, and this valve body is cylindric, and circular diameter is greater than the interior circular diameter of its intermediate section in one section of its two ends, all be processed with internal thread on the interior circle at its two ends, to be used for and being connected of hydraulic system oil circuit.Be provided with two valve seats 3 in the valve body 2, this two valve seat is cylindric, the interior circular diameter of their outside diameter and valve body 2 is complementary, and is processed with screw thread respectively on the circle on their cylindrical and in the valve body 2, and they are in the intermediate section of end-to-end screw-in valve body 2 by this screw thread.Circle intermediate section diameters are all greater than that two sections diameters at its two ends in two valve seats 3, thus formation circumferential step 11 on section and the intersegmental interior circle in two ends therebetween.Wherein, in a valve seat 3 nonreturn valve core 5 is installed.Said nonreturn valve core 5 is cylindric, its diameter greater than one section internal diameter of its place valve seat 3 ends and with its place valve seat 3 outer ends in that circumferential step 11 on the circle offset.One section of the inner end of nonreturn valve core 5 is conical, and the inner end internal diameter of its place valve seat 3 is less than its non-conical section diameter, thus make its with place valve seat 3 vertically between be and become flexible that shape cooperates, leave gap 4 between the intermediate section of its cylindrical and place valve seat 3.The centre of nonreturn valve core 5 is processed with radial direction through hole 10, and its outer end is processed with center hole 12, connects between this center hole and radial direction through hole.Two-way spool 7 is installed in another valve seat 3, this two-way spool also is cylindric, taper shape all is processed at its two ends, the outside of its two conical section all with its place valve seat 3 two in circumferential step 11 edges on the circle offset, and leave spacing 6 between the inner end of its inner end and nonreturn valve core 5.Be processed with restriction 9 on the conical section outer side surface of nonreturn valve core 5, the two ends of this restriction are connected with said gap 4 and spacing 6 respectively.The conical section outside at two-way spool 7 two ends is processed with vertical restriction 8, and this two vertical restriction is on the same straight line of two-way spool 7 homonymies.The intermediate section of two-way spool 7 is that a side of cylindrical section is the plane, and the vertical center line on this plane and two vertical restrictions 8 are on the same straight line.Wherein: restriction 9 flow areas on the nonreturn valve core 5 are less than the flow area of the vertical restriction 8 on the two-way spool 7, and the radial direction through hole 10 on the nonreturn valve core 5 and the flow area of center hole 12 are greater than the flow area of vertical restriction 8 on the two-way spool 7.
In addition, for ease of processing and assembling, said two valve seats 3 all are to be detachable shape butt joint by two sections half valve seats to form.
For ease of installing, the outer end oral area of two valve seats 3 all is processed to the Hexagon mouth 1 that matches with inner hexagon spanner.
When the hydraulic oil forward flow, unidirectional spool 5 can be to two-way spool 7 one side shiftings under the pressure effect of hydraulic oil, the conical section outer side surface of nonreturn valve core 5 and the circumferential step 11 on the respective valve seat 3 interior circles are fitted and sealing, hydraulic oil can only flow in the said spacing 6 from the restriction on nonreturn valve core 5 conical section 9, plays throttling action.At this moment, because vertical restriction 8 flow areas of two-way spool 7 make that greater than restriction 9 flow areas of nonreturn valve core 5 vertical restriction 8 of two-way spool 7 is inoperative.
When the hydraulic oil reverse flow, unidirectional spool 5 can be to its outer end one side shifting under the pressure effect of hydraulic oil, the conical section outer side surface of nonreturn valve core 5 and the circumferential step 11 on the respective valve seat 3 interior circles are thrown off, hydraulic oil can only flow out from radial direction through hole on the nonreturn valve core 5 10 and center hole 12, by 8 throttling actions of vertical restriction on 7 liang of conical section of two-way spool.At this moment, because the flow area of radial direction through hole 10 on the nonreturn valve core 5 and center hole 12 makes that greater than the flow area of vertical restriction 8 on the two-way spool 7 restriction 9 on the nonreturn valve core 5 is inoperative.
Claims (3)
1. bidirectional throttling valve comprises valve body (2); It is characterized in that said valve body (2) is a tubular, has two valve seats (3) in it; Two valve seats (3) also are tubular, and outer, internal thread are arranged respectively on their cylindrical and on the interior circle of valve body (2), and two valve seats (3) are outer by this, internal thread is in the end-to-end screw-in valve body (2); Circular diameter is all greater than that two sections diameters at its two ends in the intermediate section of two valve seats (3), thereby forms circumferential step (11) at their interior round two; Wherein: nonreturn valve core (5) is arranged in the valve seat (3), and this nonreturn valve core is cylindric, and its outer end diameter is greater than the outer end internal diameter of place valve seat (3); Nonreturn valve core (5) inner end is conical, and the inner end internal diameter of its place valve seat (3) is less than its non-conical section diameter; Between nonreturn valve core (5) and place valve seat (3) vertically between be loosening shape and cooperate, leave gap (4) between the interior circle of its cylindrical and respective valve seat (3); There is radial direction through hole (10) centre of nonreturn valve core (5), and there is center hole (12) its outer end, and this center hole and radial direction through hole connect; Two-way spool (7) is arranged in another valve seat (3), this two-way spool also is cylindric, its two ends are taper shape, and the outside of its two conical section offsets with interior circumferential step (11) edge of justifying two of place valve seat (3) respectively, and leaves spacing (6) between its inner end and nonreturn valve core (5); There is restriction (9) the conical outside of nonreturn valve core (5), and restriction (9) two ends are communicated with said gap (4) and spacing (6) respectively; On the conical surface at two-way spool (7) two ends vertical restriction (8) is arranged all, with the corresponding intermediate section of this two vertical restriction one side be the plane; Wherein, restriction (9) flow area on the nonreturn valve core (5) is less than the flow area of the last vertical restriction (8) of two-way spool (7), and the flow area of radial direction through hole (10) on the nonreturn valve core (5) and center hole (12) is gone up the flow area of vertical restriction (8) greater than two-way spool (7).
2. bidirectional throttling valve according to claim 1 is characterized in that two valve seats (3) all are to be detachable shape butt joint by two sections half valve seats to form.
3. bidirectional throttling valve according to claim 1, the outer end that it is characterized in that two valve seats (3) all have is convenient to the Hexagon mouth (1) that cooperates with inner hexagon spanner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620070429 CN2898402Y (en) | 2006-03-16 | 2006-03-16 | Two-way throttling valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620070429 CN2898402Y (en) | 2006-03-16 | 2006-03-16 | Two-way throttling valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2898402Y true CN2898402Y (en) | 2007-05-09 |
Family
ID=38073736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620070429 Expired - Fee Related CN2898402Y (en) | 2006-03-16 | 2006-03-16 | Two-way throttling valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2898402Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900721A (en) * | 2012-11-15 | 2013-01-30 | 栾川龙宇钼业有限公司 | Novel automatic bidirectional throttle valve |
| CN104564870A (en) * | 2014-12-11 | 2015-04-29 | 中联重科股份有限公司 | Damping joint |
| CN106438548A (en) * | 2016-12-01 | 2017-02-22 | 广西柳工机械股份有限公司 | Throttle valve |
| CN108799094A (en) * | 2018-09-12 | 2018-11-13 | 杭州力龙液压有限公司 | Spool, delay braking valve and plunger pump |
| CN114439800A (en) * | 2022-01-13 | 2022-05-06 | 涌镇液压机械（上海）有限公司 | Sliding cone shuttle valve restrictor |
| CN114962370A (en) * | 2022-04-02 | 2022-08-30 | 山东临工工程机械有限公司 | Bidirectional variable damping one-way valve |
-
2006
- 2006-03-16 CN CN 200620070429 patent/CN2898402Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900721A (en) * | 2012-11-15 | 2013-01-30 | 栾川龙宇钼业有限公司 | Novel automatic bidirectional throttle valve |
| CN104564870A (en) * | 2014-12-11 | 2015-04-29 | 中联重科股份有限公司 | Damping joint |
| CN106438548A (en) * | 2016-12-01 | 2017-02-22 | 广西柳工机械股份有限公司 | Throttle valve |
| CN106438548B (en) * | 2016-12-01 | 2018-06-15 | 广西柳工机械股份有限公司 | Throttle valve |
| CN108799094A (en) * | 2018-09-12 | 2018-11-13 | 杭州力龙液压有限公司 | Spool, delay braking valve and plunger pump |
| CN114439800A (en) * | 2022-01-13 | 2022-05-06 | 涌镇液压机械（上海）有限公司 | Sliding cone shuttle valve restrictor |
| CN114962370A (en) * | 2022-04-02 | 2022-08-30 | 山东临工工程机械有限公司 | Bidirectional variable damping one-way valve |
| CN114962370B (en) * | 2022-04-02 | 2023-09-22 | 山东临工工程机械有限公司 | Bidirectional variable damping one-way valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |