CN103775410A - Automatic reversing slide valve - Google Patents
Automatic reversing slide valve Download PDFInfo
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- CN103775410A CN103775410A CN201410007872.0A CN201410007872A CN103775410A CN 103775410 A CN103775410 A CN 103775410A CN 201410007872 A CN201410007872 A CN 201410007872A CN 103775410 A CN103775410 A CN 103775410A
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- annular boss
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Abstract
The invention discloses an automatic reversing slide valve which comprises a valve element, a valve body, a first end cover and a second end cover. A first annular boss and a second annular boss are arranged on the outer wall of the valve element, and the first annular boss and the second annular boss are distributed from the first end cover to the second end cover in sequence. A third boss is arranged on the inner wall of the valve body. An oil inlet P, a first work oil opening A and second work oil opening B are formed in the wall of the valve body. The first end cover is provided with a first oil returning opening T1. The second end cover is provided with a second oil returning opening T2. A first radial channel is arranged on the first end cover, and a first throttling needle valve is arranged in the first radial channel. A second radial channel is arranged on the second end cover, and a second throttling needle valve is arranged in the second radial channel. The automatic reversing slide valve has the advantages that the valve element is pushed to do reciprocating motion left and right by the differential pressure of the second work oil opening and the first work oil opening, continuous reversing of a work oil channel is achieved, therefore, a hydraulic cylinder is driven to do continuous reciprocating motion, and the automatic reversing slide valve is simple in structure and low in cost.
Description
Technical field
The present invention relates to a kind of automatic reverse guiding valve, relate in particular to a kind of for controlling the continuous reciprocating automatic reverse guiding valve of oil hydraulic cylinder.
Background technique
In practical engineering application, often need to constant hydraulic driving power be provided or realize the required function of equipment by this motion by the continuous to-and-fro motion of oil hydraulic cylinder.
Selector valve commutates by oil circuit control, drives oil hydraulic cylinder to-and-fro motion.Prior art adopts solenoid directional control valve or reversing rotary valve to realize commutation, and the former needs calutron to drive spool to move, and the latter needs motor-driven valve core to rotate.Extra device for driving valve body causes the complex structure of selector valve, and cost is high, but also can increase the complexity of whole system.
Summary of the invention
Technical problem solved by the invention is the automatic reverse guiding valve that provides a kind of, to overcome the part or all of defect of prior art.
Technical problem solved by the invention realizes by the following technical solutions:
Automatic reverse guiding valve of the present invention comprises valve body, spool, the first end cap and the second end cap; Spool is positioned at valve body, is provided with the first annular boss and the second annular boss on the outer wall of spool, and the first annular boss and the second annular boss are arranged to the direction of the second end cap successively along the first end cap; Be provided with the 3rd annular boss at the inwall of valve body, the wall of valve body is provided with filler opening, the first actuator port and the second actuator port; Be provided with the first hole in the inner side of the first end cap, the inner side of the second end cap is provided with the second hole; Be covered with the first radial passage at first end, first throttle needle-valve is installed in the first radial passage, first end is covered with the first return opening being communicated with the first radial passage, and form restriction between the first return opening and first throttle needle-valve, the second end cap is provided with the second radial passage, the second Throttle needle valve is installed in the second radial passage, and the second end cap is provided with the second return opening being communicated with the second radial passage, and forms restriction between the second return opening and the second Throttle needle valve; First end is covered with the first circular groove being communicated with the first radial passage, and the second end cap is provided with the second circular groove being communicated with the second radial passage;
When the pressure P of the second actuator port
2while meeting formula (1), spool moves to the direction at the first end cap place along the axial passage of valve body, in the time that spool moves to the second annular boss and contacts with the 3rd annular boss, filler opening is not all communicated with the first actuator port and the second actuator port, and the first actuator port is not communicated with the first return opening and the second actuator port is not communicated with the second return opening; In the time that spool continues move and be inserted into the first hole to the direction at the first end cap place, filler opening can be communicated with the first actuator port, and the second actuator port is communicated with the second return opening;
When the pressure P of the first actuator port
1while meeting formula (2), spool moves to the direction at the second end cap place along the axial passage of valve body, in the time that spool moves to the first annular boss and contacts with the 3rd annular boss, filler opening is not all communicated with the first actuator port and the second actuator port, and the first actuator port is not communicated with the first return opening and the second actuator port is not communicated with the second return opening; In the time that spool continues move and be inserted into the second hole to the direction at the second end cap place, filler opening can be communicated with the second actuator port, and the first actuator port is communicated with the first return opening;
In above-mentioned formula, P
1be the pressure of the first actuator port, P
2be the pressure of the second actuator port, d
1for the diameter of spool, d
2be the external diameter of the first annular boss and the second annular boss, the external diameter of the first annular boss and the second annular boss equates.
Further, the first radial passage of the present invention adopts and is threaded with first throttle needle-valve, and the second radial passage adopts and is threaded with the second Throttle needle valve.
Compared with prior art, the invention has the beneficial effects as follows:
(1) utilize the pressure differential spool of reversing slide valve inside to move along the axial passage of valve body, realize the Automatic continuous commutation of oil hydraulic cylinder, without the extra device for driving valve body such as electromagnet or motor, have simple in structure, reliable performance, the feature that cost is low.(2) by regulating Throttle needle valve, the back pressure of hydraulic system oil circuit can be set, realize different oil hydraulic cylinder reciprocating frequency, regulation range is large, meets different operating mode demands.(3) radial passage and Throttle needle valve adopt and are threaded, and pressure regulation is simple to operation.
Accompanying drawing explanation
Fig. 1 is longitudinal section, the center sectional view of automatic reverse guiding valve of the present invention;
Fig. 2 is the three-dimensional structure schematic diagram of spool;
Fig. 3 is the left actuator port H of automatic reverse guiding valve of the present invention at its first actuator port A and oil hydraulic cylinder
1be communicated with, and the right actuator port H of the second actuator port B and oil hydraulic cylinder
2when connection, work schematic diagram when oil inlet P is communicated with the first actuator port A;
Fig. 4 is the work schematic diagram of automatic reverse guiding valve of the present invention in the time that oil inlet P is communicated with the second actuator port B;
In figure, 1-spool; 2-valve body; 3-the first end cap; 4-the second end cap; 5-the first annular boss; 6-the second annular boss; 7-the 3rd annular boss; 8-the first circular groove; 9-the second circular groove; 10-the first hole; 11-the second hole; 12-the first radial passage; 13-the second radial passage; 14-first throttle needle-valve; 15-the second Throttle needle valve; The cylinder barrel of 16-oil hydraulic cylinder; 17-the first spacing hole; 18-the second spacing hole; The left end cap of 19-oil hydraulic cylinder; The right end cap of 20-oil hydraulic cylinder; 21-the first one-way valve; 22-the second one-way valve; H
1the left actuator port of-oil hydraulic cylinder; H
2the right actuator port of-oil hydraulic cylinder; P-filler opening; A-the first actuator port; B-the second actuator port; T
1the-the first return opening; T
2the-the second return opening;
the diameter of-spool;
the external diameter of the-the first annular boss and the second annular boss.
Embodiment
Further set forth the present invention below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2, automatic reverse guiding valve of the present invention mainly comprises spool 1, valve body 2, the first end cap 3, the second end cap 4.Wherein, spool 1 is positioned at valve body 2 and can moves around and change the working state of selector valve with this along the axial passage of valve body 2.The outer wall of spool 1 is provided with the first annular boss 5 and the second annular boss 6, the first annular boss 5 and the second annular boss 6 and arranges successively to the direction of the second end cap 4 along the first end cap 3; Be provided with the 3rd boss 7 at the inwall of valve body 2.On on the wall of valve body 1, be provided with oil inlet P, the first actuator port A and the second actuator port B.On the first end cap 3, be provided with the first circular groove 8, the first radial passage 12 and the first oil return inlet T
1, and be provided with 10, the first holes 10, the first hole in the inner side of the first end cap 3 be blind hole.On the second end cap 4, be provided with the second circular groove 9, the second radial passage 13 and the second oil return inlet T
2, and be provided with 11, the second holes 11, the second hole in the inner side of the second end cap 4 be blind hole.The first circular groove 8 is communicated with the first radial passage 12, and the second circular groove 9 is communicated with the second radial passage 13; The first radial passage 12 and the first oil return inlet T
1be communicated with the second radial passage 13 and the second oil return inlet T
2be communicated with.
As shown in Figure 1, in the first radial passage 12, first throttle needle-valve 14 is installed, in the first oil return inlet T
1and form restriction between first throttle needle-valve 14, in the time that oil inlet P is communicated with the second actuator port B, by adjusting first throttle needle-valve 14 in the first 12Zhong position, radial passage, can change first throttle needle-valve 14 and the first oil return inlet T
1between the aperture of restriction that forms, thereby regulate the back pressure of oil circuit.Second section stream needle-valve 15 is housed in the second radial passage 13, in the second oil return inlet T
2with second form restriction between Throttle needle valve 15, in the time that oil inlet P is communicated with the first actuator port A, by adjusting the second Throttle needle valve 15 in the first 13Zhong position, radial passage, can change the second Throttle needle valve 15 and the second oil return inlet T
2between the aperture of restriction that forms, thereby regulate the back pressure of oil circuit.
While using automatic reverse guiding valve of the present invention, as shown in Figure 3 and Figure 4, by the left actuator port H of the first actuator port A of automatic reverse guiding valve of the present invention and oil hydraulic cylinder
1be communicated with the right actuator port H of the second actuator port B and oil hydraulic cylinder
2be communicated with.
In automatic reverse guiding valve working procedure of the present invention, when the pressure P of the second actuator port (B)
2while meeting formula (1), spool 1 moves to the direction at the first end cap 3 places along the axial passage of valve body 2.
In formula (1), P
1be the pressure of the first actuator port, P
2be the pressure of the second actuator port, d
1for the diameter of spool, d
2be the external diameter of the first annular boss and the second annular boss, the external diameter of the first annular boss and the second annular boss equates.
In the time that spool 1 moves to the second annular boss 6 and contacts with the 3rd annular boss 7, oil inlet P is not all communicated with the first actuator port A and the second actuator port B, the first actuator port A and the first oil return inlet T
1be not communicated with and the second actuator port B and the second oil return inlet T
2be not communicated with; Spool continues to move and be inserted in the first hole 10 to the direction at the first end cap 3 places, and in the time that oil inlet P is communicated with the first actuator port A, the second actuator port B is while and the second oil return inlet T also
2be communicated with (as shown in Figure 3).
The hydraulic oil that oil hydraulic pump provides from oil inlet P via the first actuator port A of reversing slide valve of the present invention, the left actuator port H of oil hydraulic cylinder
1enter the left chamber of oil hydraulic cylinder with the first spacing hole 17 of oil hydraulic cylinder, now, the cylinder barrel 16 of oil hydraulic cylinder is to left movement, and the hydraulic oil in the right chamber of oil hydraulic cylinder flows out from the second spacing hole 18 of oil hydraulic cylinder, through the right actuator port H of oil hydraulic cylinder
2, the second actuator port B of reversing slide valve of the present invention, the second oil return inlet T
2flow back to fuel tank.Due to the second Throttle needle valve 15 and the second oil return inlet T
2between the restriction that forms make oil circuit produce back pressure, make keeping oil inlet P to be communicated with the first actuator port A and the second actuator port B and the second oil return inlet T
2under the state being communicated with, spool 1 can be inserted into the bottom in the first hole 10, makes spool stop motion.
In the time that the cylinder barrel 16 of oil hydraulic cylinder moves to the second spacing hole 18 left and covered completely by the right end cap 20 of oil hydraulic cylinder, the right chamber of oil hydraulic cylinder is sealed completely, cylinder barrel 16 stop motions of oil hydraulic cylinder.Now oil hydraulic pump continues fuel feeding, and the pressure of the first actuator port A raises, when the pressure P of the first actuator port A
1while meeting formula (2), spool 1 moves to the direction at the second end cap 4 places along the axial passage of valve body 2.
In formula (2), P
1be the pressure of the first actuator port, P
2be the pressure of the second actuator port, d
1for the diameter of spool, d
2be the external diameter of the first annular boss and the second annular boss, the external diameter of the first annular boss and the second annular boss equates.
When spool 1 moves until the first annular boss 5 while contacting with the 3rd annular boss 7, oil inlet P is not communicated with the first actuator port A and oil inlet P is not communicated with the second actuator port B, the first actuator port A and the first oil return inlet T
1be not communicated with and the second actuator port B and the second oil return inlet T
2be not communicated with, now the threshold state (as shown in Figure 1) of reversing slide valve of the present invention in commutation.Spool 1 continues to move and be inserted into the second hole 11 to the direction at the second end cap 4 places, when oil inlet P is communicated with the second actuator port B, and the first actuator port A and the first oil return inlet T
1when connection, reversing slide valve of the present invention completes commutation work.
As shown in Figure 4, be inserted at spool 1 behind the second hole 11 of the second end cap 4, in the time that oil inlet P is communicated with the second actuator port B, the first actuator port A also with the first oil return inlet T
1be communicated with.Now, the hydraulic oil that oil hydraulic pump provides enters reversing slide valve of the present invention from oil inlet P, through the right actuator port H of the second actuator port B, oil hydraulic cylinder
2enter the right chamber of oil hydraulic cylinder with the second spacing hole 18, now, the cylinder barrel 16 of oil hydraulic cylinder moves from left to right, and the hydraulic oil in the left chamber of oil hydraulic cylinder flows out from the first spacing hole 17, through the left actuator port H of oil hydraulic cylinder
1, reversing slide valve of the present invention the first actuator port A from the first oil return inlet T
1flow back to fuel tank.Due to first throttle needle-valve 14 and the first oil return inlet T
1between the restriction that forms make oil circuit produce back pressure, make keeping oil inlet P to be communicated with the second actuator port B and the first actuator port A and the second oil return inlet T
1under the state being communicated with, spool 1 can be inserted into the bottom in the second hole 11, makes spool stop motion.
In the time that Barrel of Hydraulic Cylinders 16 moves right the first spacing hole 17 and covered completely by the left end cap 19 of oil hydraulic cylinder, the left chamber of oil hydraulic cylinder is sealed completely, cylinder barrel 16 stop motions of oil hydraulic cylinder.Now oil hydraulic pump continues fuel feeding, and the pressure of the second actuator port B raises, when the pressure P of the second actuator port B
2while meeting formula (1), spool 1 moves to the direction at the first end cap 3 places along the axial passage of valve body 2.
In formula (1), P
1be the pressure of the first actuator port, P
2be the pressure of the second actuator port, d
1for the diameter of spool, d
2be the external diameter of the first annular boss and the second annular boss, the external diameter of the first annular boss and the second annular boss equates.
When moving valve core 1, until the second annular boss 6 while contacting with the 3rd annular boss 7, oil inlet P is not communicated with the first actuator port A and oil inlet P is not communicated with the second actuator port B, the first actuator port A and the first oil return inlet T
1be not communicated with and the second actuator port B and the second oil return inlet T
2be not communicated with, now the threshold state (as shown in Figure 1) of reversing slide valve of the present invention in commutation.In the time that spool 1 continues move and be inserted into the first hole 10 to the direction at the first end cap 3 places, oil inlet P is communicated with the first actuator port A, and the second actuator port B and the first oil return inlet T
2be communicated with, reversing slide valve completes commutation work, and now the working state of reversing slide valve as shown in Figure 3.
As fully visible, reversing slide valve of the present invention can drive the continuous to-and-fro motion of oil hydraulic cylinder.In commutation process, utilize the pressure reduction of the pressure initiation at spool 1 left and right two ends to replace electromagnetic actuator device to drive spool to move left and right, realize the continuous commutation of working oil path, thereby drive the continuous to-and-fro motion of oil hydraulic cylinder.
It should be noted that, if the first radial passage 12 adopts and is threaded with first throttle needle-valve 14, the second radial passage 13 adopts and is threaded with the second Throttle needle valve 15, can carry out manual tune to the back pressure of oil circuit.
Just enumerating of the way of realization to inventive concept of the content of this specification embodiment statement; protection scope of the present invention should not be regarded as being confined to above embodiment, conceives and should be involved in those skilled in the art the equivalent technologies mode that can think deeply according to the present invention.
Claims (2)
1. an automatic reverse guiding valve, is characterized in that: comprise valve body (2), spool (1), the first end cap (3) and the second end cap (4); Spool (1) is positioned at valve body (2), on the outer wall of spool, be provided with the first annular boss (5) and the second annular boss (6), the first annular boss (5) and the second annular boss (6) are arranged to the direction of the second end cap (4) successively along the first end cap (3); Be provided with the 3rd annular boss (7) at the inwall of valve body (2), the wall of valve body (2) is provided with filler opening (P), the first actuator port (A) and the second actuator port (B); Be provided with the first hole (10) in the inner side of the first end cap (3), the inner side of the second end cap (4) is provided with the second hole (11); Be provided with the first radial passage (12) at the first end cap (3), first throttle needle-valve (14) is installed in the first radial passage (12), first end is covered with the first return opening (T being communicated with the first radial passage (12)
1), and at the first return opening (T
1) and first throttle needle-valve (14) between form restriction, the second end cap (4) is provided with the second radial passage (13), the second Throttle needle valve (15) is installed in the second radial passage (13), and the second end cap is provided with the second return opening (T being communicated with the second radial passage (13)
2), and at the second return opening (T
2) and the second Throttle needle valve (15) between form restriction; The first end cap (3) is provided with the first circular groove (8) being communicated with the first radial passage (12), and the second end cap (4) is provided with the second circular groove (9) being communicated with the second radial passage (13);
When the pressure P of the second actuator port (B)
2while meeting formula (1), spool moves to the direction at the first end cap (3) place along the axial passage of valve body (2), in the time that spool moves to the second annular boss (6) and contacts with the 3rd annular boss (7), filler opening (P) is not all communicated with the first actuator port (A) and the second actuator port (B), the first actuator port (A) and the first return opening (T
1) be not communicated with and the second actuator port (B) and the second return opening (T
2) be not communicated with; In the time that spool continues to move and be inserted into the first hole (10) to the direction at the first end cap (3) place, filler opening (P) can be communicated with the first actuator port (A), and the second actuator port (B) and the second return opening (T
2) be communicated with;
When the pressure P of the first actuator port (A)
1while meeting formula (2), spool moves to the direction at the second end cap (4) place along the axial passage of valve body (2), in the time that spool moves to the first annular boss (5) and contacts with the 3rd annular boss (7), filler opening (P) is not all communicated with the first actuator port (A) and the second actuator port (B), the first actuator port (A) and the first return opening (T
1) be not communicated with and the second actuator port (B) and the second return opening (T
2) be not communicated with; In the time that spool continues to move and be inserted into the second hole (11) to the direction at the second end cap (4) place, filler opening (P) can be communicated with the second actuator port (B), and the first actuator port (A) and the first return opening (T
1) be communicated with;
In above-mentioned formula, P
1be the pressure of the first actuator port, P
2be the pressure of the second actuator port, d
1for the diameter of spool, d
2be the external diameter of the first annular boss and the second annular boss, the external diameter of the first annular boss and the second annular boss equates.
2. automatic reverse guiding valve according to claim 1, is characterized in that: the first radial passage (12) adopt and are threaded with first throttle needle-valve (14), and the second radial passage (13) adopt and are threaded with the second Throttle needle valve (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410007872.0A CN103775410A (en) | 2014-01-08 | 2014-01-08 | Automatic reversing slide valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410007872.0A CN103775410A (en) | 2014-01-08 | 2014-01-08 | Automatic reversing slide valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103775410A true CN103775410A (en) | 2014-05-07 |
Family
ID=50568034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410007872.0A Pending CN103775410A (en) | 2014-01-08 | 2014-01-08 | Automatic reversing slide valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103775410A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499836A (en) * | 2016-12-23 | 2017-03-15 | 燕山大学 | A kind of turning valve core type magnetic slide valve |
| CN109236787A (en) * | 2018-11-22 | 2019-01-18 | 李军 | A kind of automatic transfer valve |
| CN114321439A (en) * | 2021-12-29 | 2022-04-12 | 湖北三江航天红峰控制有限公司 | Automatic reversing valve |
| CN115451156A (en) * | 2022-09-27 | 2022-12-09 | 江西德思宏液压有限公司 | Reversing valve, supercharger and hydraulic pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3542074A (en) * | 1967-10-04 | 1970-11-24 | Willy Gassert | Fluid responsive control valve |
| CN2073504U (en) * | 1990-09-07 | 1991-03-20 | 天津机械厂 | Throttling automatic controlled direction-changing valve |
| CN102478030A (en) * | 2010-11-24 | 2012-05-30 | 思达斯易能源技术(集团)有限公司 | Hydraulic automatic control reversing valve |
| CN202510441U (en) * | 2012-03-27 | 2012-10-31 | 湖南鸿辉科技有限公司 | Automatic reversing valve |
| CN203685737U (en) * | 2014-01-08 | 2014-07-02 | 浙江大学 | Automatic reversing slide valve |
-
2014
- 2014-01-08 CN CN201410007872.0A patent/CN103775410A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3542074A (en) * | 1967-10-04 | 1970-11-24 | Willy Gassert | Fluid responsive control valve |
| CN2073504U (en) * | 1990-09-07 | 1991-03-20 | 天津机械厂 | Throttling automatic controlled direction-changing valve |
| CN102478030A (en) * | 2010-11-24 | 2012-05-30 | 思达斯易能源技术(集团)有限公司 | Hydraulic automatic control reversing valve |
| CN202510441U (en) * | 2012-03-27 | 2012-10-31 | 湖南鸿辉科技有限公司 | Automatic reversing valve |
| CN203685737U (en) * | 2014-01-08 | 2014-07-02 | 浙江大学 | Automatic reversing slide valve |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499836A (en) * | 2016-12-23 | 2017-03-15 | 燕山大学 | A kind of turning valve core type magnetic slide valve |
| CN109236787A (en) * | 2018-11-22 | 2019-01-18 | 李军 | A kind of automatic transfer valve |
| CN109236787B (en) * | 2018-11-22 | 2020-03-31 | 乐清市同丰大鲵驯养繁殖有限公司 | Automatic switching valve |
| CN114321439A (en) * | 2021-12-29 | 2022-04-12 | 湖北三江航天红峰控制有限公司 | Automatic reversing valve |
| CN114321439B (en) * | 2021-12-29 | 2023-10-03 | 湖北三江航天红峰控制有限公司 | Automatic reversing valve |
| CN115451156A (en) * | 2022-09-27 | 2022-12-09 | 江西德思宏液压有限公司 | Reversing valve, supercharger and hydraulic pump |
| CN115451156B (en) * | 2022-09-27 | 2024-06-07 | 江西德思宏液压有限公司 | Reversing valve, supercharger and hydraulic pump |
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Application publication date: 20140507 |