CN2864186Y

CN2864186Y - Electro-hydraulic digital speed-regulating valve

Info

Publication number: CN2864186Y
Application number: CN 200520146097
Authority: CN
Inventors: 张国军; 王惠; 王亚东
Original assignee: Liaoning Technical University
Current assignee: Liaoning Technical University
Priority date: 2005-12-27
Filing date: 2005-12-27
Publication date: 2007-01-31
Anticipated expiration: 2015-12-27

Abstract

The utility model pertains to the hydraulic system control equipment, in particular to an electrohydraulic digital governor valve, which mainly comprises a stepping motor (1), a connecting seat (2) and a bearing (3). The connecting seat (2) is fixed with a valve body (11) which is equipped with throttle valve, pressure regulator valve, oil pressure inlet (16), oil pressure outlet (19) and pressure control hole 1 (12) and pressure control hole 2 (18); the electrohydraulic digital governor valve realizes the digital control of the microcontroller over the whole process of speed regulating; it is equipped with a display device to carry out real-time display of the flow parameters and provided with an upper machine and the human-machine interface for on-site control, therefore it is convenient for centralized management and on-site control; the valve body is equipped with a valve core position sensor and a valve port flow sensor which carry out real-time monitoring over the operating state of the valve core and the flow parameters and feedback the result to the microcontroller for processing; the action element stepping motor applies the divided drive mode and works in with ballscrew, thus providing high precision, sensitive and reliable action and simple control method.

Description

The electrohydraulic digital series flow control valve

Technical field

The utility model belongs to hydraulic system control device, particularly a kind of electrohydraulic digital series flow control valve.

Technical background

In hydraulic system, flow velocity, flow to hydraulic pressure need be controlled at any time, so that make executive component carry out work according to the requirement of load, therefore, hydraulic flow rates, flow control valve are in the critical elements that directly influences hydraulic work system process and performance characteristic quality, it is low that the present Hydraulic Adjustable Speed valve that uses exists control accuracy, poor reliability, the complicated many deficiencies of controlling method.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned technical deficiency, and a kind of control accuracy height, good reliability, the simple electrohydraulic digital series flow control valve of controlling method are provided.

The technological scheme that the utility model technical solution problem adopts is: a kind of electrohydraulic digital series flow control valve of mainly being made up of stepper motor, connecting base and bearing, be characterized on connecting base, fixing a valve body, be provided with throttle valve, pressure regulator valve, oil pressure inlet, oil pressure outlet and pressure regulating hole one, two in the valve body; Throttle valve comprises the adjusting valve pocket internal segment flow valve core that is contained in versatilely in the valve body, and throttling valve core is connected with the screw set drive fit, and the screw set endoporus is provided with square thread and is meshed with ball screw; A magnetic stripe is fixed on right side, throttling valve core upper end, correspondingly with magnetic stripe adorns a position transducer on valve body top; The pressure regulating hole two ends communicate with decompression valve pocket bottom and outlet respectively; Adorn a flow transducer at the valve outlet place; Regulate and to adorn a throttle valve spring in the valve pocket and the screw set bottom connection touches; Pressure regulator valve is included in the interior activity of decompression valve pocket and adorns a relief pressure valve cartridge, and a relief spring is adorned in the relief pressure valve cartridge bottom; Pressure regulating hole two two ends communicate with inlet and decompression valve pocket top respectively.

The beneficial effects of the utility model are: this electrohydraulic digital series flow control valve, it is digital control to have realized that microcontroller carries out whole speed regulation process, is provided with display device, real-time demonstration flow parameter, possess upper-position unit and field control man-machine interface simultaneously, convenient centralized management and scene are controlled; Valve body is provided with valve core position sensor and valve port flow transducer, can monitor spool working state and flow parameter in real time, and the result can be fed back to microcontroller and handle; The executive component stepping motor adopts the segmentation driving mode, and cooperates with ball screw, the control accuracy height, and it is reliable to be active in one's movements, and controlling method is simple.

Description of drawings

Specify with embodiment below in conjunction with accompanying drawing.

Fig. 1 shows electrohydraulic digital series flow control valve structural front view.

Among the figure, the 1-stepper motor; The 2-connecting base; The 3-bearing; The 4-ball screw; The 5-magnetic stripe; The 6-screw set; The 7-position transducer; The 8-flow transducer; The 9-outlet; The 10-throttle valve spring; The 11-valve body; 12-pressure regulating hole one; 13-regulates valve pocket; The 14-valve pocket that reduces pressure; The 15-relief spring; The 16-inlet; The 17-relief pressure valve cartridge; 18-pressure regulating hole two; The 19-throttling valve core; The 20-land;

Embodiment

With reference to accompanying drawing, a kind of electrohydraulic digital series flow control valve of mainly forming by stepper motor 1, connecting base 2 and bearing 3, be characterized on connecting base 2, fixing a valve body 11, be provided with throttle valve, pressure regulator valve, oil pressure inlet 16, oil pressure in the valve body 11 and go out 9 and pressure regulating hole one, 2 12,18; Throttle valve comprises the throttling valve core 19 in the adjusting valve pocket 13 that is contained in versatilely in the valve body 11, throttling valve core 19 is connected with screw set 6 drive fits, screw set 6 endoporus are provided with square thread and are meshed with ball screw 4, fixedly connected with land 20 between ball screw 4 and the stepper motor 1, ball screw 4 is contained in the bearing 3 versatilely; A magnetic stripe 5 is fixed on right side, throttling valve core 19 upper end, correspondingly with magnetic stripe 5 adorns a position transducer 7 on valve body 11 tops, realizes the position that moves up and down of monitoring throttle valve 19; Pressure regulating hole one 12 two ends communicate with decompression valve pocket 13 bottoms and oil pressure outlet 9 respectively, by the pressure in the pressure regulator valve regulating system; Export 9 places at the oil pressure of valve body 11 and adorn a flow transducer 8, be used for monitoring data on flows; Adorning a throttle valve spring 0 in the adjusting valve pocket 13 touches with screw set 6 bottom connections; Pressure regulator valve is included in the decompression valve pocket 14 and adorns a relief pressure valve cartridge 17 versatilely, and a relief spring 15 is adorned in decompression valve pocket 14 bottoms, and pressure regulating hole 2 18 two ends communicate with oil pressure inlet 16 and decompression valve pocket 14 tops respectively, regulate the pressure of oil pressure inlet 16.

The working principle of electrohydraulic digital series flow control valve: adopt microcontroller as the control core, if display unit and man machine operation interface, utilize upper-position unit or artificial on-the-spot input flow rate parameter to microcontroller, microcontroller is handled back output control signal to input parameter, with signal after the power drive element amplifies, offer stepper motor 1, the output shaft of stepper motor 1 cooperates with ball screw 4 through land 20, the control signal of microcontroller is converted to stepper motor 1 rotation, drive ball screw 4 rotations, driving screw set 6 moves up and down, the throttling valve core 19 that matches with ball screw 6 also moves up and down simultaneously like this, the real-time acquisition stream quantity sensor 8 of microcontroller, the related data of position transducer 7 feedbacks, to the processing of rectifying a deviation after the data processing, thus the best control that realizes the oil pressure flow.

Claims

1, a kind of electrohydraulic digital series flow control valve, mainly form by stepper motor (1), connecting base (2) and bearing (3), it is characterized in that on connecting base (2), fixing a valve body (11), be provided with throttle valve, pressure regulator valve, oil pressure inlet (16), oil pressure outlet (9) and pressure regulating hole one, two (12), (18) in the valve body (11); Throttle valve comprises the throttle valve (19) in the adjusting valve pocket (13) that is contained in versatilely in the valve body (11), and throttle valve (19) is connected with screw set (6) drive fit, and screw set (6) endoporus is provided with square thread and is meshed with ball screw (4); A magnetic stripe (5) is fixed on right side, throttle valve (19) upper end, correspondingly with magnetic stripe (5) adorns a position transducer (7) on valve body (11) top; Pressure regulating hole (12) two ends communicate with decompression valve pocket (14) bottom and outlet (9) respectively; Locate to adorn a flow transducer (8) in valve body (11) outlet (9); Adorning a throttle valve spring (10) in the adjusting valve pocket (13) touches with screw set (6) bottom connection.

2, electrohydraulic digital series flow control valve according to claim 1 is characterized in that pressure regulator valve is included in decompression valve pocket (14) to adorn a relief pressure valve cartridge (17) versatilely, relief pressure valve cartridge (17) bottom dress relief spring (15); Pressure regulating hole two (18) two ends communicate with inlet (16) and decompression valve pocket (14) top respectively.