CN209511230U - A kind of rotary flow control valve - Google Patents

Abstract

The utility model discloses a kind of rotary flow control valves, including driving motor, controller, valve body, valve pocket, spool, end cap and controller seat；Driving motor is directly connected with spool by motor shaft, drives Spool rotating movement；Be provided on spool two kidney slots directly link up flow valve P mouth and T mouthfuls；Several runners are provided on valve pocket and valve body, by the rotary motion of spool, these runners are isolated in control, to control direction and the size of liquid stream.The features such as the utility model has structure simple, and process and assemble is at low cost, and spool valve port opening in entire working range is continuous, and the linearity is good, and frictional resistance is small, and dynamic response is high.

Description

A kind of rotary flow control valve

Technical field

The utility model relates to fluid control technologies, and in particular to a kind of rotary flow control valve.

Background technique

Flow control valve is a kind of complex components for integrating motor and control technology, and major function is in hydraulic pressure system Electric part and hydraulic part are connected in system, the small electric signal of input can be converted to powerful hydraulic letter Number output, have many advantages, such as that input power is small, power amplification ratio is high, dynamic property is good.

But current rotation directly-drive servo valve is due to being the straight line fortune that the rotary motion of motor is converted directly into spool It is dynamic, it outputs and inputs and nisi linear relationship, and with the increase of motor corner, the linearity of servo valve will be increasingly Difference, to influence the control effect of flow valve.Chinese patent CN1661243A discloses that a kind of limited angle is rotary electro-hydraulic to be watched Valve is taken, uses brushless DC servomotor directly band movable valve plug to rotate, has the characteristics that the linearity is good, but its valve Core, housing configuration are complicated, and processing cost is high.

Utility model content

That the purpose of this utility model is to provide a kind of linearities is good, dynamic response is high, structure is simple, manufacture and assembly side Just rotary flow control valve.

Realize the technical solution of the utility model aim are as follows: a kind of rotary flow control valve, including driving motor, control Device, valve body, valve pocket, spool, end cap and controller seat；The valve body is hollow structure, and inside has the cavity for placing valve pocket, Valve body is equipped with several runners and communicates with above-mentioned cavity；The valve pocket offers several boss, and valve flowing channel is isolated, on spool Several communicating grooves are offered, throttling window, control flow output are provided at valve pocket and spool cooperation；Spool is hollow structure, Inside there is a through-hole to communicate its both ends of the surface through spool；The driving motor is fixed on one end face of valve body, the electricity on driving motor Arbor is connect with spool end, and band movable valve plug rotates；The controller seat is mounted on the other end of driving motor, control Device is placed in controller seat；The end cap is mounted on the other end of valve body, passes through sealing ring sealed valve body, valve pocket and spool In oil liquid.

Compared with prior art, the remarkable advantage of the utility model are as follows: (1) the utility model passes through the direct band of driving motor Movable valve plug rotates, and keeps spool valve port opening in entire working range continuous, has the characteristics that the linearity is good；(2) originally Utility model has structure simple, and process and assemble is at low cost, and spool is rotary motion, and frictional resistance is small, the spies such as dynamic response height Point；(3) for the rotary flow control valve of the utility model in actual work, controller controls flow valve according to input instruction signal Driving motor, motor is directly rotated by motor shaft band movable valve plug, by the reciprocating motion of the communicating groove on spool, The ditch oil canal on valve pocket is opened or closed, realizes the switching control to oil duct；(4) bias on the utility model eccentric stiffener Club is directly fixedly mounted on machine shaft by pin, and the processing is simple, and interchangeability and maintainability are good, can improve and directly drive stream The performance of control valve, reduces cost.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the rotary flow control valve of the utility model.

Fig. 2 is the structural schematic diagram of the rotary flow control valve motor shaft of the utility model.

Fig. 3 is the structural schematic diagram of the rotary flow control valve machine shaft of the utility model.

Specific embodiment

As shown in Figure 1, a kind of rotary flow control valve, including driving motor 1, controller 2, valve body 3, valve pocket 4, spool 5, end cap 6 and controller seat 15；The valve body 3 is hollow structure, and inside has the cavity for placing valve pocket 4, is equipped on valve body 3 Several runners are communicated with above-mentioned cavity；The valve pocket 4 is placed in the cavity of valve body 3, offers several boss and runner is isolated, Offer several communicating grooves on spool 5, communicating groove is controlled in flow valve the opening of oil duct and closed by the rotary motion of spool 5 It closes, controls direction and the size of liquid stream；Throttling window, control flow output are provided at valve pocket 4 and 5 cooperation of spool；Spool 5 is Hollow structure inside has a through-hole to communicate its both ends of the surface through spool 5；The driving motor 1 is fixed on 3 one end face of valve body, drives Motor shaft on dynamic motor 1 is connect with 5 end face of spool, and band movable valve plug 5 rotates；The controller seat 15 is mounted on driving The other end of motor 1, controller 2 are placed in controller seat 15；The end cap 6 is mounted on the other end of valve body 3, by close Oil liquid in 7 sealed valve body 3 of seal, valve pocket 4 and spool 5.

The window shape form that throttles on the valve pocket 4 is rectangular window, circular window, trapezoidal window or herringbone window.

The driving motor 1 is fixed on valve body 3 by cover board 10 and screw 12.

The driving motor 1 is limited angle torque motor, servo motor or the stepping electricity of built-in angular displacement sensor Machine.

The controller seat 15 is fixed on driving motor 1 by screw 13, and controller flap 16 is fixed by screw 14 On controller seat 15.

As shown in Figure 2 and Figure 3, the motor shaft on the driving motor 1 is made of shaft 17 and eccentric club 18, eccentric sphere There is the deviation of certain distance at 19 center of mounting hole and 17 axle center of shaft of bar 18.

The bias club 18 is inserted into the mounting hole 19 of shaft 17, and eccentric club 18 and shaft 17 pass through pin joint, weldering It connects or the modes rigid attachments such as interference is fixed.

The end cap 6 is mounted on valve body 3 by screw 11.

There are two axisymmetric kidney-shaped or rectangle communicating grooves on the spool, for linking up P mouthfuls and T mouthfuls of runners.

The utility model is described in detail below with reference to embodiment.

Embodiment

In conjunction with Fig. 1, a kind of rotary flow control valve, including driving motor 1, controller 2, valve body 3, valve pocket 4, spool 5, End cap 6, sealing ring 7, sealing ring 8, sealing ring 9, cover board 10, screw 11, screw 12, screw 13, screw 14,15 and of controller seat Controller flap 16.The valve body 3 is hollow structure, and inside has the cavity for placing valve pocket 4, has on valve body 3 several Runner is communicated with above-mentioned cavity.The valve pocket 4 is placed in the cavity of valve body 3, and valve pocket 4 offers several boss, which can With the oil duct in 3 cavity of isolation valve body.It is provided with throttling window, on valve pocket 4 to cooperate control flow output with spool 5.Institute It states spool 5 to be placed in 4 cavity of valve pocket, several communicating grooves is offered on 5 axis of spool, communicating groove passes through the rotary motion of spool 5 Control the opening and closing of oil duct in flow valve.The communicating groove is used for the runner linked up on valve pocket.Spool 5 be hollow structure, There is a through-hole to communicate its both ends of the surface through spool 5.5 one end face of spool has to match with the motor shaft of driving motor 1 Connector, the connector that the eccentric club 18 on the motor shaft of driving motor 1 is inserted into 5 end face of spool is connected with spool 5, and leads to It crosses cover board 10 and screw 12 is fixed on valve body 3.The controller seat 15 is mounted on the another of driving motor 1 by screw 13 End.The controller 2 is placed in controller seat 15, for controlling driving motor 1.The control flap 16 passes through screw 14 It is mounted on controller seat 15, for protecting controller 2.The end cap 6 passes through 7 sealed valve body 3 of sealing ring, valve pocket 4 and spool 5 In oil liquid, be provided with sealing ring 8 between the boss and spool 3 of valve pocket 4, sealing ring 9 be provided between motor shaft and valve body 3.

In conjunction with Fig. 2, motor shaft is made of shaft 17 and eccentric club 18.In combination with Fig. 3, have at the top of the shaft 17 One mounting hole 19, the mounting hole 19 deviate the axle center of shaft 16.Spherical part insertion 5 end face of spool of the bias club 18 At connector, rigid attachment is formed, can be rotated with movable valve plug 5.

For the rotary flow control valve of the utility model in actual work, controller controls flow according to input instruction signal The driving motor of valve, motor are directly rotated by motor shaft band movable valve plug, pass through the reciprocal fortune of the communicating groove on spool It is dynamic, the ditch oil canal on valve pocket is opened or closed, realizes the switching control to oil duct.

Eccentric club on the utility model eccentric stiffener is directly fixedly mounted on machine shaft by pin, processing letter Single, interchangeability and maintainability are good, can improve the performance for directly driving flow control valve, reduce cost.

The utility model is rotated by driving motor directly band movable valve plug, makes spool in entire working range internal valve Mouth aperture is continuous, has the characteristics that the linearity is good.The utility model has structure simple, and process and assemble is at low cost, and spool is rotation The features such as transhipment is dynamic, and frictional resistance is small, and dynamic response is high.

Claims (8)

1. a kind of rotary flow control valve, which is characterized in that including driving motor (1), controller (2), valve body (3), valve pocket (4), spool (5), end cap (6) and controller seat (15)；The valve body (3) is hollow structure, and inside, which has, places valve pocket (4) Cavity is equipped with several runners on valve body (3) and communicates with above-mentioned cavity；The valve pocket (4) offers several boss for valve body stream Road isolation, spool offer several communicating grooves on (5), and throttling window, control stream are provided at valve pocket (4) and spool (5) cooperation Amount output；Spool (5) is hollow structure, inside has a through-hole to communicate its both ends of the surface through spool (5)；The driving motor (1) It is fixed on (3) one end face of valve body, the motor shaft on driving motor (1) is connect with spool (5) end face, and band movable valve plug (5) rotates Movement；The controller seat (15) is mounted on the other end of driving motor (1), controller (2) be placed on controller seat (15) when In；The end cap (6) is mounted on the other end of valve body (3), passes through sealing ring (7) sealed valve body (3), valve pocket (4) and spool (5) In oil liquid.

2. rotary flow control valve according to claim 1, which is characterized in that the throttling window shape on valve pocket (4) Form is rectangular window, circular window, trapezoidal window or herringbone window.

3. rotary flow control valve according to claim 1, which is characterized in that the driving motor (1) passes through cover board (10) it is fixed on valve body (3) with screw (12).

4. rotary flow control valve according to claim 1, which is characterized in that the driving motor (1) is interior angle setting Limited angle torque motor, servo motor or the stepper motor of displacement sensor.

5. rotary flow control valve according to claim 1, which is characterized in that the controller seat (15) passes through screw (13) it is fixed on driving motor (1), controller flap (16) is fixed on controller seat (15) by screw (14).

6. rotary flow control valve according to claim 1, which is characterized in that the motor on the driving motor (1) Axis is made of shaft (17) and eccentric club (18), and mounting hole (19) center and shaft (17) axle center of eccentric club (18) have one The deviation of set a distance.

7. rotary flow control valve according to claim 6, which is characterized in that the bias club (18) is inserted into shaft (17) in mounting hole (19), eccentric club (18) and shaft (17) pass through pin joint, welding or interference mode rigid attachment It is fixed.

8. rotary flow control valve according to claim 1, which is characterized in that the end cap (6) passes through screw (11) It is mounted on valve body (3).