CN202646210U - High-frequency-response proportional directional valve - Google Patents
High-frequency-response proportional directional valve Download PDFInfo
- Publication number
- CN202646210U CN202646210U CN 201220290528 CN201220290528U CN202646210U CN 202646210 U CN202646210 U CN 202646210U CN 201220290528 CN201220290528 CN 201220290528 CN 201220290528 U CN201220290528 U CN 201220290528U CN 202646210 U CN202646210 U CN 202646210U
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- valve
- valve body
- actuator port
- spool
- return opening
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Abstract
The utility model discloses a high-frequency-response proportional directional valve, which comprises a valve body, a main valve hole penetrating the entire valve body, a valve sleeve which is fixedly installed inside the main valve hole, a valve core which is arranged inside the valve sleeve and can slide in a manner relative to the valve sleeve and an end cover and a proportional electromagnet, which are respectively connected with two ends of the valve body; and one end of the valve core is linked with a push rod of the proportional electromagnet, and the other end of the valve core is connected with the end cover through an elastic device. The high-frequency-response proportional directional valve has beneficial effects that rapidness in proportional directional control can be realized, the response speed is fast compared to a traditional valve, the control precision is high, a central dead zone is small, and the directional valve can be used in a high-frequency-response and high-precision control system. Due to adopting an embedding structure of the valve body and the valve sleeve, the proportional directional valve is convenient to machine and reliable to work, and the cost is also effectively controlled by adopting the single proportional electromagnet.
Description
Technical field
The utility model relates to a kind of high frequency sound proportional direction valve.
Background technique
In some hydraulic system, typically such as the testing machine hydraulic system, often use servovalve, come the rise and fall speed of Control experiment device oil cylinder, and the size of control load pressure.Adopt the hydraulic system principle figure of servovalve to see accompanying drawing 1.From the hydraulic oil that oil sources 1 ' is come, its pressure is regulated by relief valve 2 ' and is limited, and pressure gauge 3 ' is used for observing oil supply pressure.Servovalve 6 ' is used for the piston movement direction of control oil cylinder 7 ' and the pressure in the piston oil-cylinder cavity, and cylinder rod chamber pressure is observed with pressure gauge 4 ', and the oil cylinder rodless cavity pressure is observed with pressure gauge 5 '.6 ' minute 3 position, left, center, right of servovalve are controlled by electrical signal.During meta, separate the path of oil sources and oil cylinder, it is motionless that oil cylinder piston keeps; During left position, cylinder rod chamber is communicated with fuel tank, and piston moves right, and regulates the input electrical signal size and can regulate the speed of moving to right and pressure; During right position, oil cylinder rodless cavity is communicated with oil sources, and piston is moved to the left, and regulates the input electrical signal size and can regulate the speed of moving to left and pressure.
Proportional direction valve can be pressed input electrical signal control liquid flow path direction and uninterrupted, because its meta dead band is large, speed of response is slower, can't needing be used for the occasion of high speed control.
The model utility content
The purpose of this utility model is to provide a kind of high frequency sound proportional direction valve, and the structure of adoption rate electromagnet and spring by the displacement realization proportion directional control function of spool, has overcome the deficiency of conventional art, realizes the conversion of " power---displacement ".
The technical problem that the utility model solves can realize by the following technical solutions:
A kind of high frequency sound proportional direction valve, comprise valve body, run through whole valve body main valve hole, be fixedly installed in valve pocket in the main valve hole, be arranged at valve pocket inner and the spool that can slide with respect to valve pocket and end cap and the proportion electro-magnet that is connected with the valve body two ends respectively; One end of described spool is connected end cap with the other end of the interlock of the push rod of proportion electro-magnet, spool by elastic device;
Described valve body is provided with filler opening, the first actuator port, the second actuator port, the first return opening and the second return opening; Described valve pocket is provided with throttle orifice, the first oil through and the second oil through;
Described the first oil through is communicated with the first return opening and the second return opening respectively, and the second oil through is communicated with filler opening, and throttle orifice is communicated with the first actuator port and the second actuator port respectively.
In an embodiment of the present utility model, described elastic device comprise the valve core spring seat that is connected with spool, be installed on the end cap spring seat on the end cap and be arranged at the valve core spring seat and the end cap spring seat between spring.
In an embodiment of the present utility model, described the first return opening and the second return opening are arranged at respectively the both sides of valve inner, communicate in valve body by runner, and merge into single return opening in the valve body outside.
In an embodiment of the present utility model, described valve pocket and main valve hole are interference fit, and spool and valve pocket are Spielpassung.
In an embodiment of the present utility model, be provided with positioning work piece in the described valve body, valve its filler opening when not working is communicated with the first actuator port, the second actuator port is communicated with return opening.
The beneficial effects of the utility model are: can realize fast proportion directional control, compare its fast response time with tradition to valve, control accuracy is high, and the meta dead band is little, can be used in high frequency sound, the high-precision control system.Adopt the mosaic structure of valve body and valve pocket because of its structure, so its easy to process, reliable operation, the mechanism of digital ratio equation electromagnet has also effectively controlled cost.
Description of drawings
Fig. 1 is the systematic schematic diagram of common usage ratio directional control valve.
Fig. 2 is the structural representation of high frequency sound proportional direction valve described in the utility model.
Fig. 3 is the structural representation of valve pocket described in the utility model.
Fig. 4 is the sectional drawing of valve pocket described in the utility model.
Fig. 5 is the structural representation of spool described in the utility model.
Fig. 6 is that spool described in the utility model is at the structural representation on valve body the right.
Fig. 7 is the structural representation of spool described in the utility model in the middle of valve body.
Fig. 8 is that spool described in the utility model is at the structural representation on the valve body left side.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the utility model.
As shown in Figure 2, a kind of high frequency sound proportional direction valve described in the utility model, comprise valve body 1, run through whole valve body main valve hole 16, be fixedly installed in valve pocket 3 in the main valve hole, be arranged at valve pocket is inner and can slide with respect to valve pocket spool 4 and the end cap 2 that is connected with the valve body two ends respectively and proportion electro-magnet 7; One end of described spool is connected end cap with the other end of the interlock of the push rod of proportion electro-magnet, spool by elastic device.
Described elastic device comprise the valve core spring seat 11 that is connected with spool, be installed on the end cap spring seat 9 on the end cap and be arranged at the valve core spring seat and the end cap spring seat between spring 10, the end cap spring seat is used for fixing spring, and the valve core spring seat is used for the spring force that spring produces is passed to spool.
Valve body 1 has comprised main valve hole 16, balanced runner 14, oil inlet P, the first actuator port A, the second actuator port B, the first return opening and the second return opening.Described the first return opening and the second return opening are arranged at the valve inner left and right sides, communicate in valve body by the casting runner, merge into single oil return inlet T in the valve body outside.
As shown in Figure 3 and Figure 4, valve pocket 3 inside and outside circles adopt Vehicle Processing, and the first logical hydraulic fluid port 17 and the second oil through 19 adopt and bore processing, and throttle orifice 18 adopts the line cutting.Logical hydraulic fluid port 17 communicates with the first return opening and the second return opening in the valve body 1 respectively, and logical hydraulic fluid port 19 communicates with oil inlet P in the valve body 1, and throttle orifice 18 communicates with interior the first actuator port A and the second actuator port B of valve body 1 respectively.
Pressure oil enters from oil inlet P, flows out from the first actuator port A or the second actuator port B, and two actuator ports generally connect executive component, such as hydraulic jack or oil hydraulic motor, and the fluid oil sump tank that the oil return inlet T mouth flows out.Valve body is for watering foundry goods, and remaining part is machined piece.
As shown in Figure 5, spool 4 adopts Vehicle Processings, with valve pocket 3 be Spielpassung, under the power effect of spring 10 and proportion electro-magnet push rod 13 can about move flexibly, the size of throttle orifice opening amount 20 be can control with relatively moving of valve pocket 3, thereby direction and the size of flow of fluid controlled.
The pressure that balanced runner 14 is subject to spool 4 both ends of the surface is identical, has reduced the liquid resistance of spool 4 in valve pocket 3, has improved frequency response speed.
Positioning work piece 5 makes proportion electro-magnet when no signal is inputted, and spool 4 is in state shown in the accompanying drawing 5.
Such as Fig. 8, Fig. 7 and shown in Figure 8, spool 4 was in valve body 1 location right when the utility model was inputted in proportion electro-magnet 7 no signals, communicated with the first actuator port A for oil inlet P this moment, the second actuator port B communicate with oil return inlet T (seeing accompanying drawing 5).
When proportion electro-magnet 7 had the electrical signal input, the power passing ratio electromagnet push-rod 13 that proportion electro-magnet 7 produces acted on spool 4, the valve core spring seat 11, and by spring 10 this power is converted into the distance that spool 4 is moved to the left.
Input electrical signal increase along with proportion electro-magnet 7, the power of proportion electro-magnet push rod 13 outputs is also larger, spool 4 side shifting of more turning left, throttle orifice opening amount 20 between oil inlet P and the first actuator port A and the second actuator port B and the oil return inlet T is less at this moment, the execution original paper action that is connected to the first actuator port A, the second actuator port B mouth is slower, until oil inlet P, the first actuator port A, the second actuator port B, oil return inlet T not connected (seeing accompanying drawing 6).
If the input signal of proportion electro-magnet 7 continues to increase, then spool 4 continues the side shifting of turning left, this moment oil inlet P communicate with the second actuator port B, the first actuator port A communicate with oil return inlet T (seeing accompanying drawing 7), throttle orifice opening amount between oil inlet P and the second actuator port B and the first actuator port A and the oil return inlet T increases along with the increase of input electrical signal, the execution original paper action that is connected to the first actuator port A, the second actuator port B is also faster, until spring seat 11 is limited in the left side limit position by spring seat 9.
Above demonstration and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. high frequency sound proportional direction valve, it is characterized in that, comprise valve body, run through whole valve body main valve hole, be fixedly installed in valve pocket in the main valve hole, be arranged at valve pocket inner and the spool that can slide with respect to valve pocket and end cap and the proportion electro-magnet that is connected with the valve body two ends respectively; One end of described spool is connected end cap with the other end of the interlock of the push rod of proportion electro-magnet, spool by elastic device;
Described valve body is provided with filler opening, the first actuator port, the second actuator port, the first return opening and the second return opening; Described valve pocket is provided with throttle orifice, the first oil through and the second oil through;
Described the first oil through is communicated with the first return opening and the second return opening respectively, and the second oil through is communicated with filler opening, and throttle orifice is communicated with the first actuator port and the second actuator port respectively.
2. a kind of high frequency sound proportional direction valve according to claim 1, it is characterized in that, described elastic device comprise the valve core spring seat that is connected with spool, be installed on the end cap spring seat on the end cap and be arranged at the valve core spring seat and the end cap spring seat between spring.
3. a kind of high frequency sound proportional direction valve according to claim 1 is characterized in that, described the first return opening and the second return opening are arranged at respectively the both sides of valve inner, communicates in valve body by runner, and merges into single return opening in the valve body outside.
4. a kind of high frequency sound proportional direction valve according to claim 1 is characterized in that, described valve pocket and main valve hole are interference fit, and spool and valve pocket are Spielpassung.
5. a kind of high frequency sound proportional direction valve according to claim 1 is characterized in that, is provided with positioning work piece in the described valve body, and its filler opening was communicated with the first actuator port when valve was not worked, and the second actuator port is communicated with return opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220290528 CN202646210U (en) | 2012-06-19 | 2012-06-19 | High-frequency-response proportional directional valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220290528 CN202646210U (en) | 2012-06-19 | 2012-06-19 | High-frequency-response proportional directional valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202646210U true CN202646210U (en) | 2013-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220290528 Expired - Fee Related CN202646210U (en) | 2012-06-19 | 2012-06-19 | High-frequency-response proportional directional valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202646210U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511376A (en) * | 2012-06-19 | 2014-01-15 | 上海立新液压有限公司 | High-frequency-response proportional direction valve |
-
2012
- 2012-06-19 CN CN 201220290528 patent/CN202646210U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511376A (en) * | 2012-06-19 | 2014-01-15 | 上海立新液压有限公司 | High-frequency-response proportional direction valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20210619 |