CN201554709U - Multi-loop selection valve - Google Patents

Multi-loop selection valve Download PDF

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Publication number
CN201554709U
CN201554709U CN2009201974890U CN200920197489U CN201554709U CN 201554709 U CN201554709 U CN 201554709U CN 2009201974890 U CN2009201974890 U CN 2009201974890U CN 200920197489 U CN200920197489 U CN 200920197489U CN 201554709 U CN201554709 U CN 201554709U
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CN
China
Prior art keywords
valve
port
oil outlet
communicated
convex shoulder
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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
Application number
CN2009201974890U
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Chinese (zh)
Inventor
邵玉强
周善舰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Hanshang Hydraulic Co Ltd
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Ningbo Hanshang Hydraulic Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Priority to CN2009201974890U priority Critical patent/CN201554709U/en
Application granted granted Critical
Publication of CN201554709U publication Critical patent/CN201554709U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a multi-loop selection valve, which comprises a valve body and a valve core, wherein a first pressure port, a second pressure port, a first oil outlet, a second oil outlet and an oil draining port are formed on the valve body; the selection valve is characterized in that a third oil outlet and a fourth oil outlet are also formed on the valve body; the episporium of the valve core is provided with a first convex shoulder, a second convex shoulder and a third convex shoulder; a first valve port, a second valve port, a third valve port and a fourth valve port are formed in a valve hole; when the valve core moves to one end, the first pressure port is communicated with the first oil outlet through the first valve port, and the second pressure port is communicated with the third oil outlet through the third valve port; and when the valve core moves to the other end, the first pressure port is communicated with the second oil outlet through the second valve port, and the second pressure port is communicated with the fourth oil outlet through the fourth valve port. The selection valve can select which hydraulic cylinder to work in a hydraulic loop, and a plurality of hydraulic cylinders can be controlled by utilizing a group of the selection valves, thereby greatly reducing the number of hydraulic elements in a hydraulic system and the cost.

Description

The multiloop selector valve
Technical field
The utility model relates to a kind of valve, relates in particular to a kind of hydrovalve that hydraulic system is carried out the loop selection function that is used for.
Background technique
In traditional industrial hydraulic and running mechanism oil hydraulic circuit, a plurality of identical executive component (oil hydraulic cylinder or the oil hydraulic motor) parallel connections and the loop of sequentially-operating have been used in a large number, generally be according to the selected several groups of identical control valves of the number of executive component in the existing hydraulic system, by hydraulic valve block they are connected again, go control actuating component, as shown in Figure 8.
The shortcoming that exists in the existing loop is: 1, because the use of hydraulic valve block makes that the overall dimensions of oil hydraulic circuit is huger, give in the limited space of running mechanism and piping work is installed has been caused certain difficulty; 2, because several groups of control valves are same sizes, and executive component does not move simultaneously, makes that the utilization ratio of control valve is not high, and the whole cost of hydraulic system is than higher; 3,, when executive component is many, automatically controlled quite complicated in the oil hydraulic circuit because the directional control valve in the control valve group is necessary for the selector valve of the 3-position 4-way of double electromagnet.
If can remove to control a plurality of executive components with one group of control valve, the cost and the overall dimensions of hydraulic system will be reduced greatly, realize going to control the function of a plurality of executive components with one group of control valve, just must there be a kind of directional control valve to realize to select the function of which executive component work, and existing hydraulic directio valve mostly is the control of actuator movement direction, does not possess the selection function of executive component.
Summary of the invention
Technical problem to be solved in the utility model is that a kind of have oil hydraulic circuit selection function and compact structure, multiloop selector valve easy for installation are provided at above-mentioned prior art present situation, uses the hydraulic system cost behind this selector valve to reduce greatly.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: a kind of multiloop selector valve, include valve body, spool and spool driving structure, have first pressure port, second pressure port, first oil outlet, second oil outlet and drain tap on the described valve body, has the spring chamber that is communicated with described drain tap in the valve body, described spool is limited in and energy relative valve opening slippage interior with its valve opening that is complementary in the valve body, one end of spool links to each other with the spool driving structure after passing valve body, is provided with the spring of the other end that acts on spool in the described spring chamber; It is characterized in that: also have the 3rd oil outlet and the 4th oil outlet on the described valve body; Have first convex shoulder, second convex shoulder and the 3rd convex shoulder that axially are provided with at interval successively along it on the described spool perisporium; Have first valve port, second valve port, the 3rd valve port and the 4th valve port in the described valve opening; Wherein, first valve port is communicated with first pressure port and first oil outlet, and this first valve port is equipped with mutually with first convex shoulder and determines first pressure port and first oil outlet whether to be communicated with; Second valve port is communicated with first pressure port and second oil outlet, and this second valve port is equipped with mutually with an end of second convex shoulder and determines first pressure port and second oil outlet whether to be communicated with; The 3rd valve port is communicated with second pressure port and the 3rd oil outlet, and the 3rd valve port is equipped with mutually with the other end of second convex shoulder and determines second pressure port and the 3rd oil outlet whether to be communicated with; The 4th valve port is communicated with second pressure port and the 4th oil outlet, and the 4th valve port is equipped with mutually with the 3rd convex shoulder and determines second pressure port and the 4th oil outlet whether to be communicated with; Move at spool under the state of an end, first pressure port is communicated with first oil outlet by first valve port, and second pressure port is communicated with the 3rd oil outlet by the 3rd valve port, and second valve port is covered by second convex shoulder, and the 4th valve port is covered by the 3rd convex shoulder; Move under the other end state at spool, first pressure port is communicated with second oil outlet by second valve port, and second pressure port is communicated with the 4th oil outlet by the 4th valve port, and first valve port is covered by first convex shoulder, and the 3rd valve port is covered by second convex shoulder.
Above-mentioned spool driving structure is the Electromagnetic Drive structure.The Electromagnetic Drive structure is equivalent to the spool driving structure in the solenoid valve, and it is a routine techniques, can certainly be manual lever actuated structure, can also be the Driven by Hydraulic Cylinder mode.
A side is provided with damping cavity in the above-mentioned valve body, and described spool passes this damping cavity, and also has the damp channel that is communicated with described spring chamber and damping cavity on described spool.When spool was opened, because the damping function of damp channel on the spool makes spool open steadily, stability was good, friction and noise.
Compared with prior art, advantage of the present utility model is:
1, during use, earlier first pressure port is linked to each other with oil sump tank with pressure oil-source respectively by a three position four-way directional control valve with second pressure port, first oil outlet with selector valve links to each other with rodless cavity with the rod chamber of working solution cylinder pressure respectively with second oil outlet again, the 3rd oil outlet of selector valve links to each other with rodless cavity with the rod chamber of another working solution cylinder pressure respectively with the 4th oil outlet, or link to each other with second pressure port with first pressure port of another selector valve, the movement direction of three position four-way electromagnetic valve control oil hydraulic cylinder, which hydraulic cylinder works selector valve then just selects, move to when spool under the state of an end, then begin action with the oil hydraulic cylinder that first oil outlet links to each other with the 3rd oil outlet, and the another one oil hydraulic cylinder does not have oil by not moving, move to when spool under the state of the other end, then begin action with the oil hydraulic cylinder that second oil outlet links to each other with the 4th oil outlet, and the another one oil hydraulic cylinder does not have oil by not moving, what just this selector valve played in oil hydraulic circuit is to select which oil hydraulic cylinder (or other executive component) work, to realize the selection function of oil hydraulic circuit, thereby can remove to control a plurality of oil hydraulic cylinders (or other executive component) with one group of this selector valve, reduce the number of hydraulic element in the hydraulic system greatly, reduced cost;
2, have in the loop of N oil hydraulic cylinder (or other executive component) in control, only need N-1 this selector valve parallel connection connected one group of reversing control valve assembly again and just can realize, promptly only need a hydraulic valve block structure, reduce the size of hydraulic valve block greatly, reduced the installation difficulty of hydraulic system;
3, since each multiloop selector valve in about an Electromagnetic Drive structure, two Electromagnetic Drive structures are then arranged in each three position four-way electromagnetic valve, use the multiloop selector valve to greatly reduce automatically controlled difficulty in the oil hydraulic circuit of N executive component than reducing by N-1 Electromagnetic Drive structure in the prior art;
4, this multiloop selector valve is that tubular type connects simple in structure, volume compact, easy for installation.
Description of drawings
Fig. 1 is the utility model embodiment's structure sectional view (the spool driving structure gets electricity condition);
Fig. 2 is that the A-A of Fig. 1 is to sectional view;
Fig. 3 is the utility model embodiment's a structure sectional view (spool driving structure must not electricity condition);
Fig. 4 is the utility model embodiment's a hydraulic schematic diagram;
Fig. 5 is the hydraulic schematic diagram with two working solution cylinder pressures of this multiloop selector valve control;
Fig. 6 is three structural representations that selector valve is cascaded;
Fig. 7 is the hydraulic schematic diagram with four working solution cylinder pressures of three this multiloop selector valve control;
Fig. 8 is the existing hydraulic schematic diagram that contains four working solution cylinder pressures.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Shown in Fig. 1~4, be a preferred embodiment of the present utility model.
A kind of multiloop selector valve, include valve body 1, spool 2 and spool driving structure 3, it is rectangular-shaped that valve body 1 roughly is, have the first pressure port P1, the second pressure port P2, first oil outlet 11, second oil outlet 12, the 3rd oil outlet 13, the 4th oil outlet 14 and drain tap T on the valve body 1, wherein, the first pressure port P1, the second pressure port P2 and drain tap T are positioned on the end face of valve body 1, first oil outlet 11 and second oil outlet 12 are positioned on another end face of valve body 1, and three oil outlets 13 and the 4th oil outlet 14 are positioned on the 3rd end face of valve body 1.
Also have the spring chamber 4 that is communicated with drain tap T in the valve body 1, no matter how spool 2 moves, and this spring chamber 4 cuts off with each pressure port and oil outlet all the time.
Spool 2 is limited in and energy relative valve opening slippage interior with its valve opening that is complementary in the valve body 1, one end of spool 2 passes valve body 1 back and links to each other with spool driving structure 3, be provided with the spring 10 of the other end that acts on spool 2 in the spring chamber 4, spool 2 had keep illustrating the trend that moves to right.
Have first convex shoulder 21, second convex shoulder 22 and the 3rd convex shoulder 23 that axially are provided with at interval successively along it on spool 2 perisporiums; Have first valve port 5, second valve port 6, the 3rd valve port 7 and the 4th valve port 8 in the valve opening.
Wherein, first valve port 5 is communicated with the first pressure port P1 and first oil outlet 11, this first valve port 5 is equipped with mutually with first convex shoulder 21 and determines the first pressure port P1 and first oil outlet 11 whether to be communicated with, promptly work as first convex shoulder 21 and leave first valve port 5, the first pressure port P1 and first oil outlet 11 are communicated with, in first convex shoulder 21 entered first valve port 5, first convex shoulder, 21 periphery walls and first valve port, 5 inner circle walls formed liquid sealing, and the first pressure port P1 and first oil outlet 11 are blocked.
Second valve port 6 is communicated with the first pressure port P1 and second oil outlet 12, this second valve port 6 is equipped with mutually with an end of second convex shoulder 22 and determines the first pressure port P1 and second oil outlet 12 whether to be communicated with, promptly the left end when second convex shoulder 22 leaves second valve port 6, the first pressure port P1 and second oil outlet 12 are communicated with, when the left end of second convex shoulder 22 enters in second valve port 6, the left end periphery wall of second convex shoulder 22 and second valve port, 6 inner circle walls form liquid sealing, and the first pressure port P1 and second oil outlet 12 are blocked.
The 3rd valve port 7 is communicated with the second pressure port P2 and the 3rd oil outlet 13, the 3rd valve port 7 is equipped with mutually with the other end of second convex shoulder 22 and determines the second pressure port P2 and the 3rd oil outlet 13 whether to be communicated with, when the right-hand member of second convex shoulder 22 leaves the 3rd valve port 7, the second pressure port P2 and the 3rd oil outlet 13 are communicated with, when the right-hand member of second convex shoulder 22 enters in the 3rd valve port 7, the right-hand member periphery wall of second convex shoulder 22 and the 3rd valve port 7 inner circle walls form liquid sealing, and the second pressure port P2 and the 3rd oil outlet 13 are blocked.
The 4th valve port 8 is communicated with the second pressure port P2 and the 4th oil outlet 14, the 4th valve port 8 is equipped with mutually with the 3rd convex shoulder 23 and determines the second pressure port P2 and the 4th oil outlet 14 whether to be communicated with, when the 3rd convex shoulder 23 leaves the 4th valve port 8, the second pressure port P2 and the 4th oil outlet 14 are communicated with, in the 3rd convex shoulder 23 enters the 4th valve port 8, the 3rd convex shoulder 23 periphery walls and the 4th valve port 8 inner circle walls form liquid sealing, and the second pressure port P2 and the 4th oil outlet 14 are blocked.
No matter how spool 2 moves, by cooperating of second convex shoulder 22 and valve opening inwall, win pressure port P1 and the second pressure port P2 are blocked all the time, and first oil outlet 11 and the 3rd oil outlet 13 are blocked all the time, and second oil outlet 12 and the 4th oil outlet 14 are blocked all the time.
Spool driving structure 3 is the Electromagnetic Drive structure, and it is a routine techniques.
As shown in Figure 1, 2, when electromagnetic valve core driving structure 3 gets, spool 2 promotes to be moved to the valve opening left end in electromagnetic valve core driving structure 3, the first pressure port P1 is communicated with the 3rd oil outlet 13 by second valve port 6, the second pressure port P2 is communicated with the 4th oil outlet 14 by the 4th valve port 8, first valve port 5 is covered by first convex shoulder 21, and the 3rd valve port 7 is covered by second convex shoulder 22.
As shown in Figure 3, when electromagnetic valve core driving structure 3 must not, spool 2 is moved to the right-hand member of valve opening in the effect of spring 10, the first pressure port P1 is communicated with first oil outlet 11 by first valve port 5, the second pressure port P2 is communicated with second oil outlet 12 by the 3rd valve port 7, second valve port 6 is covered by second convex shoulder 22, and the 4th valve port 8 is covered by the 3rd convex shoulder 23.
A side is provided with damping cavity 9 in the valve body 1, and no matter how spool 2 moves, and this damping cavity 9 is cut off with each pressure port and oil outlet all the time, and spool 2 passes this damping cavity 9, and also has the damp channel 24 that is communicated with spring chamber 4 and damping cavity 9 on spool 2.
The usage mode of this multiloop selector valve and process and principle are as follows:
As shown in Figure 5.Be example with this multiloop selector valve two working solution cylinder pressures of control (being operation element) earlier, the first pressure port P1 is linked to each other with oil sump tank with pressure oil-source respectively by a three position four-way directional control valve H with the second pressure port P2, first oil outlet 11 of selector valve and the 3rd oil outlet 13 are linked to each other with rodless cavity with the rod chamber of the working solution cylinder pressure G on top respectively, and second oil outlet 12 of selector valve and the 4th oil outlet 14 link to each other with rodless cavity with the rod chamber of the working solution cylinder pressure G of bottom respectively.
The electromagnetic valve core driving structure 3 of multiloop selector valve when electric, three position four-way directional control valve H can control lower cylinder G2 action; The electromagnetic valve core driving structure 3 of multiloop selector valve must not when electricity, and three position four-way directional control valve H can control top working solution cylinder pressure G1 action.
As Fig. 6, shown in 7, with three this multiloop selector valve four working solution cylinder pressures of control (being operation element) is example, each selector valve is connected with connecting tube successively, this overall volume is very compact, the first pressure port P1 of nethermost multiloop selector valve is linked to each other with oil sump tank with pressure oil-source respectively by a three position four-way directional control valve H with the second pressure port P2, in adjacent two selector valves, first oil outlet 11 of one of them selector valve and the 3rd oil outlet 13 are communicated with the first pressure port P1 and the second pressure port P2 of adjacent another selector valve respectively, first oil outlet 11 that is positioned at the selector valve of the topmost part links to each other with rodless cavity with the rod chamber of the 3rd oil outlet 13 with the working solution cylinder pressure G4 of the topmost part, second oil outlet 12 of each selector valve and the 4th oil outlet 14 respectively with a corresponding working solution cylinder pressure G1, G2, the rod chamber of G3 links to each other with rodless cavity.
When only there being this corresponding selector valve to get when electric, can control oil hydraulic cylinder G1, G2, G3 work that second oil outlet 12 of this selector valve links to each other with the 4th oil outlet 14, when all selector valves all must not electricity, the oil hydraulic cylinder G4 work of the topmost part.

Claims (3)

1. multiloop selector valve, include valve body (1), spool (2) and spool driving structure (3), have first pressure port (P1) on the described valve body (1), second pressure port (P2), first oil outlet (11), second oil outlet (12) and drain tap (T), also has the spring chamber (4) that is communicated with described drain tap (T) in the valve body (1), described spool (2) is limited in and energy relative valve opening slippage interior with its valve opening that is complementary in the valve body (1), one end of spool (2) passes valve body (1) back and links to each other with spool driving structure (3), is provided with the spring (10) of the other end that acts on spool (2) in the described spring chamber (4); It is characterized in that: also have the 3rd oil outlet (13) and the 4th oil outlet (14) on the described valve body (1); Have first convex shoulder (21), second convex shoulder (22) and the 3rd convex shoulder (23) that axially are provided with at interval successively along it on described spool (2) perisporium; Have first valve port (5), second valve port (6), the 3rd valve port (7) and the 4th valve port (8) in the described valve opening; Wherein, first valve port (5) is communicated with first pressure port (P1) and first oil outlet (11), and this first valve port (5) is equipped with mutually with first convex shoulder (21) and determines first pressure port (P1) and first oil outlet (11) whether to be communicated with; Second valve port (6) is communicated with first pressure port (P1) and second oil outlet (12), and this second valve port (6) is equipped with mutually with an end of second convex shoulder (22) and determines first pressure port (P1) and second oil outlet (12) whether to be communicated with; The 3rd valve port (7) is communicated with second pressure port (P2) and the 3rd oil outlet (13), and the 3rd valve port (7) is equipped with mutually with the other end of second convex shoulder (22) and determines second pressure port (P2) and the 3rd oil outlet (13) whether to be communicated with; The 4th valve port (8) is communicated with second pressure port (P2) and the 4th oil outlet (14), and the 4th valve port (8) is equipped with mutually with the 3rd convex shoulder (23) and determines second pressure port (P2) and the 4th oil outlet (14) whether to be communicated with; Move under the state of an end at spool (2), first pressure port (P1) is communicated with first oil outlet (11) by first valve port (5), second pressure port (P2) is communicated with the 3rd oil outlet (13) by the 3rd valve port (7), second valve port (6) is covered by second convex shoulder (22), and the 4th valve port (8) is covered by the 3rd convex shoulder (23); Move under the other end state at spool (2), first pressure port (P1) is communicated with second oil outlet (12) by second valve port (6), second pressure port (P2) is communicated with the 4th oil outlet (14) by the 4th valve port (8), first valve port (5) is covered by first convex shoulder (21), and the 3rd valve port (7) is covered by second convex shoulder (22).
2. multiloop selector valve according to claim 1 is characterized in that: described spool driving structure (3) is the Electromagnetic Drive structure.
3. multiloop selector valve according to claim 1, it is characterized in that: a side is provided with damping cavity (9) in the described valve body (1), described spool (2) passes this damping cavity (9), and also has the damp channel (24) that is communicated with described spring chamber (4) and damping cavity (9) on described spool (2).
CN2009201974890U 2009-10-13 2009-10-13 Multi-loop selection valve Expired - Fee Related CN201554709U (en)

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Application Number Priority Date Filing Date Title
CN2009201974890U CN201554709U (en) 2009-10-13 2009-10-13 Multi-loop selection valve

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Application Number Priority Date Filing Date Title
CN2009201974890U CN201554709U (en) 2009-10-13 2009-10-13 Multi-loop selection valve

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108252977A (en) * 2018-02-05 2018-07-06 陈艳艳 A kind of oil path distribution valve for large-flow hydraulic system
CN108374811A (en) * 2018-05-02 2018-08-07 宁波真格液压科技有限公司 A kind of oil path distribution valve with unloading function
CN108506267A (en) * 2018-05-02 2018-09-07 宁波真格液压科技有限公司 A kind of loop choice valve with decompression function
CN108661973A (en) * 2018-05-18 2018-10-16 宁波真格液压科技有限公司 A kind of automatic turning control valve
CN108679029A (en) * 2018-05-18 2018-10-19 宁波真格液压科技有限公司 A kind of ram control valve
CN111089093A (en) * 2019-12-24 2020-05-01 北京理工大学 Energy-saving electro-hydraulic proportional direction valve with improved structure and control method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108252977A (en) * 2018-02-05 2018-07-06 陈艳艳 A kind of oil path distribution valve for large-flow hydraulic system
CN108374811A (en) * 2018-05-02 2018-08-07 宁波真格液压科技有限公司 A kind of oil path distribution valve with unloading function
CN108506267A (en) * 2018-05-02 2018-09-07 宁波真格液压科技有限公司 A kind of loop choice valve with decompression function
CN108506267B (en) * 2018-05-02 2019-11-26 宁波真格液压科技有限公司 A kind of loop choice valve with decompression function
CN108374811B (en) * 2018-05-02 2019-12-24 江苏南京白马现代农业高新技术产业园有限公司 Oil way distribution valve with unloading function
CN108661973A (en) * 2018-05-18 2018-10-16 宁波真格液压科技有限公司 A kind of automatic turning control valve
CN108679029A (en) * 2018-05-18 2018-10-19 宁波真格液压科技有限公司 A kind of ram control valve
CN111089093A (en) * 2019-12-24 2020-05-01 北京理工大学 Energy-saving electro-hydraulic proportional direction valve with improved structure and control method thereof

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Granted publication date: 20100818

Termination date: 20141013

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