CN204533021U - Multi-way valve - Google Patents
Multi-way valve Download PDFInfo
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- CN204533021U CN204533021U CN201520200053.8U CN201520200053U CN204533021U CN 204533021 U CN204533021 U CN 204533021U CN 201520200053 U CN201520200053 U CN 201520200053U CN 204533021 U CN204533021 U CN 204533021U
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Abstract
The utility model discloses a kind of multi-way valve, comprising: valve body, and valve body is formed pressure oil port and load-sensitive hydraulic fluid port; Main relief valve, is arranged in valve body; And auxiliary overflow valve, be arranged in valve body.Duct is formed with, hole link pressure oil port and load-sensitive hydraulic fluid port in valve body; The spring chamber of main relief valve and the entrance of auxiliary overflow valve by be formed in first passage in valve body and second channel respectively with hole link, the entrance of main relief valve is communicated with pressure oil port by the oil supply gallery be formed in valve body; By arranging obturating element in duct, being communicated with optionally between the spring chamber of cut-out pressure hydraulic fluid port or load-sensitive hydraulic fluid port and main relief valve and the entrance of auxiliary overflow valve.Like this, just can change the internal structure of valve body easily, make this valve body to be used for Constant Pump System, and can be used in load-reacting pumping system.Therefore, without the need to manufacturing two kinds of different valve bodies, manufacture cost is reduced.
Description
Technical field
The utility model relates to a kind of multi-way valve, particularly relates to a kind of load-sensitive proportional multi-way valve for Constant Pump System or load-reacting pumping system.
Background technique
Load-sensitive proportional multi-way valve (hereinafter referred to as " metering pump multi-way valve ") for Constant Pump System is different from the structure of the load-sensitive proportional multi-way valve (hereinafter referred to as " variable displacement pump multi-way valve ") for load-reacting pumping system.Therefore, the valve body of metering pump multi-way valve is in the market designed to have different internal structures from the valve body of variable displacement pump multi-way valve, needs individually to manufacture.
In the prior art, the valve body of metering pump multi-way valve or the valve body of variable displacement pump multi-way valve are once manufacture, and its internal structure just can not change.That is, the internal structure of valve body is changeless, can not change, and this causes needing manufacturing respectively two kinds of different valve bodies, and this just needs two kinds of different casting moulds, adds manufacture cost.
Model utility content
The purpose of this utility model is intended at least one aspect solving the above-mentioned problems in the prior art and defect.
An object of the present utility model is to provide a kind of multi-way valve, and the internal structure of the valve body of this multi-way valve can change easily, makes it not only may be used for Constant Pump System, and may be used for load-reacting pumping system, thus reduces manufacture cost.
According to an aspect of the present utility model, a kind of multi-way valve is provided, comprises: valve body, described valve body is formed pressure oil port and load-sensitive hydraulic fluid port; Main relief valve, is arranged in described valve body; And auxiliary overflow valve, be arranged in described valve body.A duct is formed, pressure oil port described in described hole link and load-sensitive hydraulic fluid port in described valve body; The spring chamber of described main relief valve and the entrance of described auxiliary overflow valve by be formed in first passage in described valve body and second channel respectively with described hole link, the entrance of described main relief valve is communicated with described pressure oil port by the oil supply gallery be formed in described valve body; By arranging obturating element in described duct, optionally cut off being communicated with between the spring chamber of described pressure oil port or described load-sensitive hydraulic fluid port and described main relief valve and the entrance of described auxiliary overflow valve.
According to the embodiment of an exemplary of the present utility model, in first port be connected with described pressure oil port in described duct, be provided with the first obturating element, described first obturating element cuts off being communicated with between the spring chamber of described pressure oil port and described main relief valve and the entrance of described auxiliary overflow valve; And described load-sensitive hydraulic fluid port keeps being communicated with the entrance of described auxiliary overflow valve with the spring chamber of described main relief valve via described duct.
According to the embodiment of another exemplary of the present utility model, described multi-way valve is the load-sensitive proportional multi-way valve for Constant Pump System; The pressure of the metering pump in the pressure oil port of described multi-way valve and described Constant Pump System is supplied oil phase and is joined; And the load-sensitive pressure oil of the load-sensitive hydraulic fluid port of described multi-way valve and described metering pump is connected.
According to the embodiment of another exemplary of the present utility model, in first port in described duct, be formed with internal thread, and be formed with outside thread on described first obturating element, described first obturating element is threaded in first port in described duct.
According to the embodiment of another exemplary of the present utility model, in second port be connected with described load-sensitive hydraulic fluid port in described duct, be provided with the second obturating element, described second obturating element cuts off being communicated with between the spring chamber of described load-sensitive hydraulic fluid port and described main relief valve and the entrance of described auxiliary overflow valve; And be provided with the throttle element with throttle orifice in first port be connected with described pressure oil port in described duct, described pressure oil port keeps being communicated with the entrance of described auxiliary overflow valve with the spring chamber of described main relief valve by the throttle orifice of described throttle element.
According to the embodiment of another exemplary of the present utility model, described multi-way valve is the load-sensitive proportional multi-way valve for load-reacting pumping system; The pressure of the load-reacting pump in the pressure oil port of described multi-way valve and described load-reacting pumping system is supplied oil phase and is joined; And the load-sensitive pressure oil of the load-sensitive hydraulic fluid port of described multi-way valve and described load-reacting pump is connected.
According to the embodiment of another exemplary of the present utility model, in first port in described duct, be formed with internal thread, and be formed with outside thread on described throttle element, described throttle element is threaded in first port in described duct.
According to the embodiment of another exemplary of the present utility model, in second port in described duct, be formed with internal thread, and be formed with outside thread on described second obturating element, described second obturating element is threaded in second port in described duct.
According to the embodiment of another exemplary of the present utility model, in described valve body, be also formed with drainback passage, the outlet of described main relief valve is communicated with described drainback passage with the outlet of described auxiliary overflow valve.
According to the embodiment of another exemplary of the present utility model, described duct is disposed between described main relief valve and described auxiliary overflow valve.
In the embodiment of each exemplary aforementioned of the present utility model, carry out being communicated with between the spring chamber of optionally cut-out pressure supply oil or load-sensitive pressure oil and main relief valve and the entrance of auxiliary overflow valve by arranging obturating element in the duct of valve body.Like this, just can change the internal structure of valve body easily, make this valve body to be used for Constant Pump System, and can be used in load-reacting pumping system.Therefore, without the need to manufacturing two kinds of different valve bodies, manufacture cost is reduced.
By the description hereinafter done the utility model with reference to accompanying drawing, other object of the present utility model and advantage will be apparent, and can help there is comprehensive understanding to the utility model.
Accompanying drawing explanation
Fig. 1 display is according to the sectional view of the multi-way valve of the embodiment of an exemplary of the present utility model, and wherein, in duct, also do not arrange obturating element, duct is in unimpeded state;
Fig. 2 display according to the embodiment of an exemplary of the present utility model, the sectional view of the multi-way valve that is applicable to Constant Pump System, wherein, in first port in duct, be provided with the first obturating element;
Fig. 3 shows the hydraulic circuit schematic diagram of the multi-way valve shown in Fig. 2;
Fig. 4 display according to the embodiment of an exemplary of the present utility model, the sectional view of the multi-way valve that is applicable to load-reacting pumping system, wherein, in first port in duct, be provided with throttle element, and be provided with the second obturating element in second port in duct; With
Fig. 5 shows the hydraulic circuit schematic diagram of the multi-way valve shown in Fig. 4.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.In the description, same or analogous drawing reference numeral indicates same or analogous parts.The explanation of following reference accompanying drawing to the utility model mode of execution is intended to make an explanation to overall model utility design of the present utility model, and not should be understood to one restriction of the present utility model.
In addition, in the following detailed description, for ease of explaining, many concrete details have been set forth to provide the complete understanding to this disclosure embodiment.But significantly, one or more embodiment also can be implemented when not having these details.In other cases, known construction and device diagrammatically embodies to simplify accompanying drawing.
According to general technical design of the present utility model, a kind of multi-way valve is provided, comprises: valve body, described valve body is formed pressure oil port and load-sensitive hydraulic fluid port; Main relief valve, is arranged in described valve body; And auxiliary overflow valve, be arranged in described valve body.A duct is formed, pressure oil port described in described hole link and load-sensitive hydraulic fluid port in described valve body; The spring chamber of described main relief valve and the entrance of described auxiliary overflow valve by be formed in first passage in described valve body and second channel respectively with described hole link, the entrance of described main relief valve is communicated with described pressure oil port by the oil supply gallery be formed in described valve body; By arranging obturating element in described duct, optionally cut off being communicated with between the spring chamber of described pressure oil port or described load-sensitive hydraulic fluid port and described main relief valve and the entrance of described auxiliary overflow valve.
Fig. 1 display is according to the sectional view of the multi-way valve of the embodiment of an exemplary of the present utility model, and wherein, in duct 110, also do not arrange obturating element, duct 110 is in unimpeded state; Fig. 2 display according to the embodiment of an exemplary of the present utility model, the sectional view of the multi-way valve that is applicable to Constant Pump System, wherein, in first port 111 in duct 110, be provided with the first obturating element 400; Fig. 3 shows the hydraulic circuit schematic diagram of the multi-way valve shown in Fig. 2.
In an embodiment of the present utility model, disclose a kind of multi-way valve.As shown in Figure 1 to Figure 3, this multi-way valve mainly comprises valve body 100, main relief valve 200, auxiliary overflow valve 300 and the first obturating element 400.
In the illustrated embodiment in which, as shown in Figure 1, valve body 100 is formed with pressure oil port P and load-sensitive hydraulic fluid port LS.Main relief valve 200 is arranged in valve body 100.Auxiliary overflow valve 300 is arranged in valve body 100.In valve body 100, be formed with a duct 110, this duct 110 is communicated with pressure oil port P and load-sensitive hydraulic fluid port LS.
Refer to Fig. 1, Fig. 2 and Fig. 3, in an embodiment of the present utility model, the spring chamber of main relief valve 200 is communicated with duct 110 with second channel 102 by the first passage 101 be formed in valve body 100 respectively with the entrance of auxiliary overflow valve 300, and the entrance of main relief valve 200 is communicated with pressure oil port P by the oil supply gallery (not shown) be formed in valve body 100.
As shown in Figures 2 and 3, in the illustrated embodiment in which, the first obturating element 400 is provided with, being communicated with between the spring chamber of this first obturating element 400 cut-out pressure hydraulic fluid port P and main relief valve 200 and the entrance of auxiliary overflow valve 300 in first port 111 be connected with pressure oil port P in duct 110; Further, load-sensitive hydraulic fluid port LS keeps being communicated with the entrance of auxiliary overflow valve 300 with the spring chamber of main relief valve 200 via duct 110.
Like this, just the multi-way valve shown in Fig. 1 is changed over the load-sensitive proportional multi-way valve being applicable to Constant Pump System shown in Fig. 2 and Fig. 3.Now, the pressure of the metering pump in the pressure oil port P of multi-way valve and Constant Pump System is supplied oil phase and is joined; And the load-sensitive pressure oil of the load-sensitive hydraulic fluid port LS of multi-way valve and metering pump is connected.
As shown in Figures 2 and 3, when Constant Pump System works, main relief valve 200 is in overflow situation, and the charge oil pressure of pressure oil port P adds the spring force of main relief valve 200 by equaling load-sensitive pressure (oil pressure of load-sensitive hydraulic fluid port LS).Now, auxiliary overflow valve 300 uses as safety valve, is no more than setting value for the load-sensitive pressure limiting load-sensitive hydraulic fluid port LS.
As depicted in figs. 1 and 2, in an embodiment of the present utility model, in first port 111 in duct 110, be formed with internal thread, and be formed with outside thread on the first obturating element 400, the first obturating element 400 is threaded in first port 111 in duct 110.
Fig. 4 display according to the embodiment of an exemplary of the present utility model, the sectional view of the multi-way valve that is applicable to load-reacting pumping system, wherein, in first port 111 in duct 110, be provided with throttle element 500, and be provided with the second obturating element 600 in second port one 12 in duct 110; The hydraulic circuit schematic diagram of the multi-way valve shown in Fig. 4 is shown with Fig. 5.
As shown in Figure 1, Figure 4 and Figure 5, in an embodiment of the present utility model, in second port one 12 be connected with load-sensitive hydraulic fluid port LS in duct 110, be provided with the second obturating element 600, this second obturating element 600 cuts off being communicated with between the spring chamber of load-sensitive hydraulic fluid port LS and main relief valve 200 and the entrance of auxiliary overflow valve 300; And in first port 111 be connected with pressure oil port P in duct 110, be provided with the throttle element 500, pressure oil port P with throttle orifice keep being communicated with the entrance of auxiliary overflow valve 300 with the spring chamber of main relief valve 200 by the throttle orifice of throttle element 500.
Like this, just the multi-way valve shown in Fig. 1 is changed over the load-sensitive proportional multi-way valve being applicable to load-reacting pumping system shown in Fig. 4 and Fig. 5.Now, the pressure of the metering pump in the pressure oil port P of multi-way valve and load-reacting pumping system is supplied oil phase and is joined; And the load-sensitive pressure oil of the load-sensitive hydraulic fluid port LS of multi-way valve and load-reacting pump is connected.Due to the existence of throttle element 500, make a winner's relief valve 200 and auxiliary overflow valve 300 composition pilot operated compound relief valve jointly, and auxiliary overflow valve 300 serves as the pilot stage of main relief valve 200.
In the embodiment shown in Fig. 4 and Fig. 5, when load-reacting pumping system works, load-sensitive pressure (oil pressure of load-sensitive hydraulic fluid port LS) feeds back to variable displacement pump (not shown), now, variable displacement pump standby pressure adds that load-sensitive pressure equals the charge oil pressure of pressure oil port P.Further, the pilot operated compound relief valve be jointly made up of main relief valve 200 and auxiliary overflow valve 300 now plays the effect of safety valve, is no more than setting value for the charge oil pressure limiting load-reacting pumping system.
In an embodiment of the present utility model, as shown in Figure 1, Figure 4 and Figure 5, in first port 111 in duct 110, be formed with internal thread, and be formed with outside thread on throttle element 500, throttle element 500 is threaded in first port 111 in duct 110.
In an embodiment of the present utility model, as shown in Figure 1, Figure 4 and Figure 5, in second port one 12 in duct 110, be formed with internal thread, and be formed with outside thread on the second obturating element 600, the second obturating element 600 is threaded in second port one 12 in duct 110.
In an embodiment of the present utility model, as shown in Figures 1 to 5, in valve body 100, be also formed with drainback passage (not shown), the outlet of main relief valve 200 is communicated with drainback passage with the outlet of auxiliary overflow valve 300, and the oil return inlet T on valve body 100 is back to fuel tank.
In an embodiment of the present utility model, as shown in Figure 1, Figure 2 and Figure 4, duct 110 is disposed between main relief valve 200 and auxiliary overflow valve 300.Like this, the length of first passage 101 and second channel 102 can be shortened.Further, in the illustrated embodiment in which, first passage 101 and second channel 102 are configured to substantially vertical with duct 110.
It will be appreciated by those skilled in the art that, embodiment described above is exemplary, and those skilled in the art can make improvements, when the conflict of the structure described in various embodiment in not recurring structure or principle, independent assortment can be carried out.
Although be illustrated the utility model by reference to the accompanying drawings, embodiment disclosed in accompanying drawing is intended to carry out exemplary illustration to the utility model preferred implementation, and can not be interpreted as one restriction of the present utility model.
Although some embodiments of this overall model utility design have been shown and explanation, those skilled in the art will appreciate that, when not deviating from principle and the spirit of this overall model utility design, can make a change these embodiments, scope of the present utility model is with claim and their equivalents.
It should be noted that word " comprises " and do not get rid of other element or step, word "a" or "an" is not got rid of multiple.In addition, any element numbers of claim should not be construed as restriction scope of the present utility model.
Claims (10)
1. a multi-way valve, comprising:
Valve body (100), described valve body (100) is formed pressure oil port (P) and load-sensitive hydraulic fluid port (LS);
Main relief valve (200), is arranged in described valve body (100); With
Auxiliary overflow valve (300), is arranged in described valve body (100),
It is characterized in that:
In described valve body (100), be formed with a duct (110), described duct (110) are communicated with described pressure oil port (P) and load-sensitive hydraulic fluid port (LS);
The spring chamber of described main relief valve (200) is communicated with described duct (110) with second channel (102) by the first passage (101) be formed in described valve body (100) respectively with the entrance of described auxiliary overflow valve (300), and the entrance of described main relief valve (200) is communicated with described pressure oil port (P) by the oil supply gallery be formed in described valve body (100);
By arranging obturating element (400,600) in described duct (110), optionally cut off being communicated with between the spring chamber of described pressure oil port (P) or described load-sensitive hydraulic fluid port (LS) and described main relief valve (200) and the entrance of described auxiliary overflow valve (300).
2. multi-way valve according to claim 1, is characterized in that:
In first port (111) be connected with described pressure oil port (P) of described duct (110), be provided with the first obturating element (400), described first obturating element (400) cuts off being communicated with between the spring chamber of described pressure oil port (P) and described main relief valve (200) and the entrance of described auxiliary overflow valve (300); And
Described load-sensitive hydraulic fluid port (LS) keeps being communicated with the entrance of described auxiliary overflow valve (300) via described duct (110) spring chamber with described main relief valve (200).
3. multi-way valve according to claim 2, is characterized in that:
Described multi-way valve is the load-sensitive proportional multi-way valve for Constant Pump System;
The pressure oil port (P) of described multi-way valve is supplied oil phase with the pressure of the metering pump in described Constant Pump System and is joined; And
The load-sensitive hydraulic fluid port (LS) of described multi-way valve and the load-sensitive pressure oil of described metering pump are connected.
4. multi-way valve according to claim 3, is characterized in that:
Internal thread is formed in first port (111) of described duct (110), and be formed with outside thread on described first obturating element (400), described first obturating element (400) is threaded in first port (111) in described duct (110).
5. multi-way valve according to claim 1, is characterized in that:
In second port (112) be connected with described load-sensitive hydraulic fluid port (LS) of described duct (110), be provided with the second obturating element (600), described second obturating element (600) cuts off being communicated with between the spring chamber of described load-sensitive hydraulic fluid port (LS) and described main relief valve (200) and the entrance of described auxiliary overflow valve (300); And
In first port (111) be connected with described pressure oil port (P) of described duct (110), be provided with the throttle element (500) with throttle orifice, described pressure oil port (P) keeps being communicated with the entrance of described auxiliary overflow valve (300) with the spring chamber of described main relief valve (200) by the throttle orifice of described throttle element (500).
6. multi-way valve according to claim 5, is characterized in that:
Described multi-way valve is the load-sensitive proportional multi-way valve for load-reacting pumping system;
The pressure oil port (P) of described multi-way valve is supplied oil phase with the pressure of the load-reacting pump in described load-reacting pumping system and is joined; And
The load-sensitive hydraulic fluid port (LS) of described multi-way valve and the load-sensitive pressure oil of described load-reacting pump are connected.
7. multi-way valve according to claim 6, is characterized in that:
Internal thread is formed in first port (111) of described duct (110), and be formed with outside thread on described throttle element (500), described throttle element (500) is threaded in first port (111) in described duct (110).
8. multi-way valve according to claim 7, is characterized in that:
Internal thread is formed in second port (112) of described duct (110), and be formed with outside thread on described second obturating element (600), described second obturating element (600) is threaded in second port (112) in described duct (110).
9. the multi-way valve according to any one of claim 1-8, is characterized in that:
In described valve body (100), be also formed with drainback passage, the outlet of described main relief valve (200) is communicated with described drainback passage with the outlet of described auxiliary overflow valve (300).
10. the multi-way valve according to any one of claim 1-8, is characterized in that:
Described duct (110) is disposed between described main relief valve (200) and described auxiliary overflow valve (300).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520200053.8U CN204533021U (en) | 2015-04-03 | 2015-04-03 | Multi-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520200053.8U CN204533021U (en) | 2015-04-03 | 2015-04-03 | Multi-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204533021U true CN204533021U (en) | 2015-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520200053.8U Active CN204533021U (en) | 2015-04-03 | 2015-04-03 | Multi-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204533021U (en) |
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2015
- 2015-04-03 CN CN201520200053.8U patent/CN204533021U/en active Active
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