CN203215023U - Digital proportional control valve - Google Patents
Digital proportional control valve Download PDFInfo
- Publication number
- CN203215023U CN203215023U CN 201220582920 CN201220582920U CN203215023U CN 203215023 U CN203215023 U CN 203215023U CN 201220582920 CN201220582920 CN 201220582920 CN 201220582920 U CN201220582920 U CN 201220582920U CN 203215023 U CN203215023 U CN 203215023U
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- valve
- permanent magnet
- control valve
- screw
- valve body
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Abstract
The utility model relates to a digital proportional control valve comprising a valve body and a valve rod arranged in a valve cavity of the valve body, and the valve rod is connected with a driving mechanism. The digital proportional control valve is characterized in that the driving mechanism comprises a pipe-shaped coat arranged outside the valve body; multiple pairs of inwards-protruding magnet windings are arranged on the inner wall of the coat at intervals, a pair of magnet windings are formed by two magnet windings in a diameter direction, each pair of the magnet windings are connected with a corresponding impulse current transmitting device, and impulse currents transmitted by the impulse current transmitting devices differ from each other in phase successively in a peripheral direction; and a permanent magnet which is of a pipe structure and a nut and can rotate relative to the coat are arranged in a pipe cavity of the coat, the permanent magnet can rotate relative to the coat under the effect of electromagnetic field generated by the magnet windings, the nut rotates along with the permanent magnet, an inner cavity of the nut is in sealing communication with the valve cavity, a screw rod is arranged in the nut and drives and is connected with the valve rod, and the permanent magnet is arranged outside the valve cavity. Compared with the prior art, the digital proportional control valve is well sealed, runs stably and has high control precision.
Description
Technical field
The utility model relates to control valve, specifically refers to a kind of numerical scale control valve.
Background technique
In fluid control field, usually by directional control valve and Proportional valve control fluid whether by or the amount passed through what, namely utilize directional control valve and Proportional valve control fluid whether by or the flow velocity that passes through, thereby the control final controlling element for example the movement of oil cylinder stop or execution speed.Described directional control valve and Proportional valve be by the position of control spool come fluid on the control valve body whether by or the size of the opening that passes through, thereby whether the control fluid enters or flows out valve body or the amount of the valve body of coming in and going out, with the purpose that reaches control performance element movement speed or stop to move.
Existing directional control valve can only provide the switching function of oil circuit, but can not control the pilot process of its oil circuit switch, so have vibrations in the course of action in the actuator in the oil circuit, the problem of action poor repeatability.
Existing Proportional valve has manual tune type and electric-hydraulic proportion type.Wherein, manual tune type proportional control valve automaticity is low, only can satisfy the usage requirement of general hydraulic equipment.Defectives such as electric-hydraulic proportion type automaticity is higher, can satisfy the continuous and telecontrol of flow parameter, and still existing stagnates encircles greatly, repeatability is low.
Summary of the invention
Technical problem to be solved in the utility model be the present situation at prior art provide a kind of can continuous control and low cost of manufacture, numerical scale control valve that running precision is good.
The utility model solves the problems of the technologies described above the technological scheme that adopts: this numerical scale control valve, comprise valve body and the interior valve rod of the valve pocket that is arranged on described valve body, this valve rod is connected with driving mechanism, it is characterized in that described driving mechanism comprises the jacket tube that is arranged on outside the described valve body, be interval with many electromagnetism windings to convex on the inner circle wall of this overcoat, two electromagnetism windings on the diametric(al) constitute a pair of electromagnetism winding, every pair of electromagnetism winding connects each self-corresponding impulsive current transmitter installation respectively, and the impulsive current that sends of these impulsive current transmitter installations along the circumferential direction has successively and differs; Be provided with permanent magnet and the screw of the tubular structure that can rotate with respect to described overcoat in the tube chamber of described overcoat, described permanent magnetism physical efficiency is rotated with respect to described overcoat under the electromagnetic field effect that described electromagnetism winding produces, described screw rotates with described permanent magnet, and the inner chamber of described screw is communicated with described valve pocket sealing, be provided with screw mandrel in the described screw, this screw mandrel drives and connects described valve rod; Described permanent magnet is positioned at outside the described valve pocket.
The rotation of screw for convenience also can effectively prolong the working life of this numerical scale control valve, can be provided with bearing in described valve pocket, and an end of described screw is plugged in the described valve pocket and with this bearing and is connected.
Preferably, one end face of described overcoat and described permanent magnet is connected on the exterior edge face of described valve body, be connected with on the other end of described overcoat and described permanent magnet to each described electromagnetism winding the control circuit board with the impulsive current that differs is provided, this control circuit board connects the control module of machine.This structure automaticity height, control are accurately.
In order to prevent the interference between the adjacent electromagnetism winding, can in the inner chamber of described jacket tube, be filled with isolation layer, this isolation layer and described permanent magnet are gapped at interval.
As the improvement of above-mentioned each scheme, this numerical scale control valve also comprises magnetic quantity transducer, and described permanent magnet is positioned at the induction range of this magnetic quantity transducer, and the output terminal of this magnetic quantity transducer connects described control circuit board.By the setting of magnetic quantity transducer, can monitor and transmit the rotation angle of permanent magnet in real time, control circuit board can in time be adjusted the transmission of impulsive current according to the data that real-time monitor, thereby makes control more accurate.
Compared with prior art, the utility model adopts screw screw mandrel driving mode, screw mandrel and valve rod are connected in the seal space in valve body and the jacket tube, the position of valve rod (being that fluid is by the openings of sizes of valve body) can be realized by the rotation of screw, improve the control accuracy of the position (being that fluid is by the openings of sizes of valve body) of valve rod greatly, more realized the Digital Control of stem position by suitable sensor; Good airproof performance simultaneously can leakage of oil, and is stable.
Description of drawings
Fig. 1 is the sectional view of the utility model assembly structure;
Fig. 2 is the sectional view along A-A line among Fig. 1.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2, this numerical scale control valve comprises:
Valve body 1 offers valve pocket 11 at first end face 15 of valve body along the axial direction of valve body, and the sidewall of valve body is provided with fluid input 12 and the fluid output 13 that is connected with valve pocket 11, is provided with return flow line 14 in the valve body, and the two ends of return flow line all are communicated with valve pocket 11.Valve pocket 11 is provided with bearing 8 near the position of external port at the inner circle wall of valve pocket 11.
Screw mandrel 3, screw mandrel is general in the present embodiment adopts wear-resisting carbon steel material to prepare.Screw mandrel 3 is fixed together with valve rod 2, and namely valve rod 2 can be done axial displacement with screw mandrel 3.
Screw 4, the matching parts of screw mandrel 3, the inner of screw 4 penetrates in the valve pocket 11 and is arranged in the bearing 8.The remaining part of screw 4 exposes to valve pocket, is arranged with the permanent magnet 5 of tubular structure on this part screw.
Also permanent magnet can be connected with screw mandrel, screw is connected with valve rod, and rotating magnetic field drives permanent magnet and screw mandrel rotates, thereby drive screw and valve rod are moving axially.This structure also can realize the purpose of this utility model.
Not shown among overcoat 6(Fig. 1, see Fig. 2 for details), tubular structure, the overcoat in the present embodiment adopt the engineering plastic materials preparation.Overcoat 6 is set in outside the permanent magnet, and evenly is provided with among six electromagnetic pole 61(Fig. 1 not shownly on the inner circle wall of overcoat, sees Fig. 2 for details), all be wound with exciting winding 62 on these electromagnetic poles; Each electromagnetic pole exciting winding corresponding with it constitutes the electromagnetism winding in the present embodiment; Two electromagnetism windings on the diametric(al) constitute a pair of electromagnetism winding, and totally three pairs of present embodiments, two electromagnetism windings of every pair of electromagnetism winding are switched on simultaneously and produced magnetic field.The quantity of electromagnetism winding can also be designed to other quantity as required, for example is designed to five pairs, N equity.Be wound with on each magnetic pole, two relative magnetic poles are formed a phase.Each winding connects impulsive current transmitter installation (not shown).
Be filled with isolation layer 9 in the inner chamber of overcoat, adopt the isolation layer of plastics or rubber material in the present embodiment.The purpose of filling isolation layer is the Motionless electromagnetic winding, makes that relative position is constant between the electromagnetism winding.
Magnetic quantity transducer 7, its output terminal links to each other with control circuit board, and permanent magnet 5 is positioned at the induction range of this magnetic quantity transducer.Present embodiment is arranged on magnetic quantity transducer 7 on the exterior edge face of overcoat 6.Magnetic quantity transducer 7 is judged the angle of swing of permanent magnet by the variation of induced flux, relevant data is fed back to control circuit board, make control circuit board come real-time control impuls electric current to the electric situation of sending of each self-corresponding electromagnetism winding according to the real data of magnetic quantity transducer perception, thereby adjust the angle of swing of permanent magnet, thereby finally reach the openings of sizes of the fluid passage of indirect accurate control valve.
The working principle of this digital flow control valve is described below:
PLC on the machine sends instruction and gives control circuit board, control circuit board computing is carried out in the instruction of PLC and amplify give the multipolar electromagnetic winding with the electric current of out of phase each to the electromagnetism winding, thereby produce the magnetic field of rotation.The field drives permanent magnet of this rotation rotates, permanent magnet drives screw and rotates together, make the screw mandrel that is threaded with it produce axial displacement, change and the relative position of valve rod between last each passage, namely control the size of each access portal, thus the flow of the pressure medium of control turnover valve body.
This numerical scale control valve control figureization, the mobile control of fluid is accurate, and is stable good; And owing to adopt the mode of overcoat or ring set and the sealing of valve pocket to be communicated with, not only reduced difficulty of processing and precision, valve body mechanism compactness, and also good airproof performance can leakage of oil, and cost is low.
Claims (5)
1. numerical scale control valve, comprise valve body and the interior valve rod of the valve pocket that is arranged on described valve body, this valve rod is connected with driving mechanism, it is characterized in that described driving mechanism comprises the jacket tube that is arranged on outside the described valve body, be interval with many electromagnetism windings to convex on the inner circle wall of this overcoat, two electromagnetism windings on the diametric(al) constitute a pair of electromagnetism winding, every pair of electromagnetism winding connects each self-corresponding impulsive current transmitter installation respectively, and the impulsive current that sends of these impulsive current transmitter installations along the circumferential direction has successively and differs; Be provided with permanent magnet and the screw of the tubular structure that can rotate with respect to described overcoat in the tube chamber of described overcoat, described permanent magnetism physical efficiency is rotated with respect to described overcoat under the electromagnetic field effect that described electromagnetism winding produces, described screw rotates with described permanent magnet, and the inner chamber of described screw is communicated with described valve pocket sealing, be provided with screw mandrel in the described screw, this screw mandrel drives and connects described valve rod; Described permanent magnet is positioned at outside the described valve pocket.
2. numerical scale control valve according to claim 1 is characterized in that being provided with bearing in the described valve pocket, and an end of described screw is plugged in the described valve pocket and with this bearing and is connected.
3. numerical scale control valve according to claim 2, an end face that it is characterized in that described jacket tube and described permanent magnet is connected on the exterior edge face of described valve body, be connected with on the other end of described overcoat and described permanent magnet to each described electromagnetism winding the control circuit board with the impulsive current that differs is provided, this control circuit board connects the control module of machine.
4. according to the described numerical scale control valve of the arbitrary claim of claim 1 to 3, it is characterized in that being filled with isolation layer in the inner chamber of described jacket tube, this isolation layer and described permanent magnet are gapped at interval.
5. numerical scale control valve according to claim 4 is characterized in that this numerical scale control valve also comprises magnetic quantity transducer, and described permanent magnet is positioned at the induction range of this magnetic quantity transducer, and the output terminal of this magnetic quantity transducer connects described control circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220582920 CN203215023U (en) | 2012-11-07 | 2012-11-07 | Digital proportional control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220582920 CN203215023U (en) | 2012-11-07 | 2012-11-07 | Digital proportional control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203215023U true CN203215023U (en) | 2013-09-25 |
Family
ID=49204562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220582920 Expired - Fee Related CN203215023U (en) | 2012-11-07 | 2012-11-07 | Digital proportional control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203215023U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927349A (en) * | 2012-11-07 | 2013-02-13 | 陈国永 | Digit proportional control valve |
-
2012
- 2012-11-07 CN CN 201220582920 patent/CN203215023U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927349A (en) * | 2012-11-07 | 2013-02-13 | 陈国永 | Digit proportional control 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 |
Granted publication date: 20130925 Termination date: 20151107 |
|
| EXPY | Termination of patent right or utility model |