CN210343900U

CN210343900U - Dual-purpose valve for proportional flow control and high-speed switch based on dual motors

Info

Publication number: CN210343900U
Application number: CN201921259069.0U
Authority: CN
Inventors: 王涛; 刘毅; 邓海顺; 何涛; 陈德馨; 高如君
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2020-04-17
Anticipated expiration: 2029-08-05

Abstract

The utility model discloses a dual-purpose valve of proportional flow control and high-speed switch based on bi-motor, including valve body, rotating electrical machines and linear electric motor, the first window of valve barrel and valve barrel second window have been seted up in proper order from a dextrad to a left side to the inside fixedly connected with valve barrel of valve body, the inside of valve body and the one side that is located the valve barrel have spacing cutting ferrule through valve barrel and the spacing key block joint of valve body circumference, the utility model relates to a hydrovalve technical field. This dual-purpose valve of proportional flow control and high-speed switch based on bi-motor can make rotation in a circumferential direction and axial displacement through rotating electrical machines and linear electric motor independent drive valve element, fine realization through switching the structure to the case and improving, make things convenient for people to realize the proportional flow control and the high-speed switch control to the hydrovalve simultaneously, make the range of application more extensive, control accuracy is higher, and has reached the purpose of the better proportion of control hydraulic medium.

Description

Dual-purpose valve for proportional flow control and high-speed switch based on dual motors

Technical Field

The utility model relates to a hydrovalve technical field specifically is a dual-purpose valve of proportional flow control and high-speed switch based on bi-motor.

Background

The proportional control valve is a hydraulic control valve which can make the parameters (pressure, flow and direction) of output oil be proportional with the change of input electric signal parameters (current and voltage) so as to implement continuous proportional control, and is a new type hydraulic control element integrating the advantages of switch type electrohydraulic control element and servo type electrohydraulic control element into one body, said valve can be open-loop controlled, and can be added with feedback link to form closed-loop control, and possesses good static property and dynamic property capable of meeting general industrial control requirements, and the electrohydraulic proportional valve adopts proportional control technique, and is a hydraulic element between switch type hydraulic valve and electrohydraulic servo valve, and can be combined together with electronic control device, and can conveniently implement operation and treatment of various input and output signals to implement complex control function, but the electrohydraulic proportional reversing valve can utilize the change of current input into proportional electromagnet to control valve core displacement to implement proportional control The reversing and the vibration exciting can not be realized, and the use requirements of certain large-flow high-speed switch vibration exciting hydraulic systems can not be met.

The electro-hydraulic servo valve is better than an electro-hydraulic proportional valve in certain performance and can be used as an excitation valve, but the electro-hydraulic servo valve has the defects that the vibration amplitude is difficult to adjust, certain limitations exist, the electro-hydraulic servo valve is complex in structure, the manufacturing precision requirement and the price are obviously higher than those of the electro-hydraulic proportional valve, the pollution resistance is poor, and the electro-hydraulic servo valve cannot be widely applied to a large-flow high-speed switch excitation hydraulic system.

The prior single proportional flow control valve can not meet the use requirements of a large-flow high-speed switch complex hydraulic system which needs proportional reversing and excitation as well as has certain control precision and dynamic characteristic requirements, and the application range has certain limitation, the utility model provides a dual-purpose valve based on the proportional flow control and the high-speed switch of a double motor, which can independently drive a valve core to do circumferential rotation and axial movement through a rotating motor and a linear motor, the valve adopts a special structural design, can rapidly determine an initial zero position working position, has two-stage axial displacement, can realize the proportional flow control after two left and right working positions after the first-stage displacement, can realize the high-flow rapid on-off excitation, can proportionally adjust the vibration frequency and the vibration amplitude, and well realizes the improvement of a valve core switching structure, the hydraulic valve has the advantages that people can conveniently realize proportional flow control and high-speed switch control of the hydraulic valve at the same time, the application range is wider, the control precision is higher, and the purpose of better controlling the proportion of a hydraulic medium is achieved, so that the hydraulic valve is greatly convenient for people to use.

Disclosure of Invention

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a proportional flow control and high speed switch dual-purpose valve based on bi-motor has solved the unable operation requirement that satisfies certain both need proportion switching-over and need the excitation, have the large-traffic high speed switch complex hydraulic system that certain control accuracy and dynamic characteristic required of current single proportional flow control valve, and its range of application has the problem of certain limitation.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a dual-purpose valve of proportional flow control and high-speed switch based on bi-motor, includes valve body, rotating electrical machines and linear electric motor, one side of rotating electrical machines is passed through one side fixed connection of rotating electrical machines installation apron and valve body, and one side of linear electric motor is passed through the opposite side fixed connection of linear electric motor installation apron and valve body, the inside fixedly connected with valve barrel of valve body, and the bottom of valve barrel has seted up the first window of valve barrel and valve barrel second window from the right side to a left side in proper order, the inside of valve body just is located one side of valve barrel and has spacing cutting ferrule through valve barrel and the spacing key block joint of valve body circumference, and one side of spacing cutting ferrule passes through fastening screw and one side fixed connection of valve barrel, the both sides of spacing cutting ferrule inner wall all fixedly connected with spacing cutting ferrule solid.

One end of the valve core is fixedly connected with a limiting shoulder, one side of the limiting shoulder is respectively provided with an arc-shaped slide way, a first contact surface, a second contact surface and a third contact surface which are matched with the limiting clamping sleeve fixed linkage block, the outer surface of the valve core is provided with a valve core rectangular through opening, and the end surface of one end of the valve core is provided with a valve core shaft end annular groove.

Preferably, the bottom of the valve body is provided with an oil inlet, and the top of the valve body is provided with an oil outlet.

Preferably, one end of the output end of the rotating motor sequentially penetrates through the valve body and the valve sleeve and extends into the valve sleeve, and one end of the output end of the rotating motor extending into the valve sleeve is slidably connected with one end of the valve core through a sliding key groove of a rotating motor shaft.

Preferably, the penetrating position of the rotating motor output shaft and the valve body is sealed through a framework oil seal structure.

Preferably, one end of the valve core close to the output shaft of the rotating motor is fixedly connected with a thrust bearing, and a return spring is sleeved on the outer surface of the valve core between the thrust bearing and the framework oil seal structure.

Preferably, one side fixedly connected with linear motor shaft of linear motor, linear motor shaft's one end runs through valve body and spacing cutting ferrule in proper order and extends to the inside of spacing cutting ferrule, and linear motor shaft extends to the inside terminal surface fixedly connected with of spacing cutting ferrule and the thrust steel ball of case axle head annular groove looks adaptation.

Preferably, the other side of the linear motor is fixedly connected with a linear motor adjusting hand wheel.

Preferably, the other side of the rotating motor is fixedly connected with a rotating motor adjusting hand wheel.

Preferably, the matching relation between the limiting shoulder and the limiting clamping sleeve is changed through the control of the rotary motor and the linear motor, so that the initial zero working position can be quickly determined, two-stage axial displacement is realized, proportional flow control can be realized at two left and right working positions after the first-stage displacement, and large-flow quick on-off excitation can be realized at a high-speed switch working position after the second-stage displacement.

Preferably, the liquid flow passing through the valve housing first window and the valve housing second window is contained inside the oil inlet and the oil outlet.

(III) advantageous effects

The utility model provides a proportion flow control and dual-purpose valve of high-speed switch based on bi-motor. Compared with the prior art, the method has the following beneficial effects:

(1) the dual-purpose valve for proportional flow control and high-speed switch based on the dual motors is characterized in that a valve sleeve is fixedly connected inside a valve body, a first valve sleeve window and a second valve sleeve window are sequentially formed in the bottom of the valve sleeve from right to left, a limiting cutting sleeve is clamped in one side of the valve body and positioned in the valve sleeve through the valve sleeve and a circumferential limiting key block of the valve body, one side of the limiting cutting sleeve is fixedly connected with one side of the valve sleeve through a fastening screw, two sides of the inner wall of the limiting cutting sleeve are fixedly connected with a limiting cutting sleeve fixing and connecting key block, a valve core is connected inside the valve sleeve in a sliding mode, one end of the valve core is fixedly connected with a limiting shoulder, one side of the limiting shoulder is respectively provided with an arc slide way, a first contact surface, a second contact surface and a third contact surface, the outer surface of the valve core is provided with a rectangular valve core penetrating, the liquid flow passing through the first window of the valve sleeve and the second window of the valve sleeve are contained in the oil inlet and the oil outlet, the adoption of a special structural design can be realized, the matching relation between the limiting shoulder and the limiting clamping sleeve is changed through the control of a rotary motor and a linear motor, so that the valve can quickly determine an initial zero working position, has two-stage axial displacement, can realize proportional flow control at two left and right working positions after the first-stage displacement, and can realize large-flow quick on-off excitation at a high-speed switch working position after the second-stage displacement, and the vibration frequency and the vibration amplitude of the valve can be proportionally adjusted, thereby well realizing the improvement of a valve core switching structure, facilitating people to simultaneously realize the proportional flow control and the high-speed switch control on the hydraulic valve, leading the application range to be wider, leading the control precision to be higher, and achieving the aim of better controlling the proportion of, thereby greatly facilitating the use of people.

(2) This dual-purpose valve of proportional flow control and high-speed switch based on bi-motor, through the inside that runs through valve body and valve barrel in proper order and extend to the valve barrel at the one end of rotating electrical machines output, the one end that the rotating electrical machines output extended to the inside of valve barrel passes through the one end sliding connection of rotating electrical machines shaft sliding key groove and case, can realize making the motor shaft be connected with case sliding key in order to bear the axial displacement when rotatory and feed, thereby the normal rotary motion and the axial displacement of case have been ensured, simultaneously through the department of running through of rotating electrical machines output shaft and valve body seal through skeleton oil blanket structure, can realize preventing that the hydraulic oil in the valve body from spilling from the department of running through of rotating electrical machines output shaft and valve body, thereby the normal.

(3) This dual-purpose valve of proportional flow control and high-speed switch based on bi-motor, through the one end fixedly connected with thrust bearing that is close to the rotating electrical machines output shaft at the case, and the case is located the outer surface cover between thrust bearing and the skeleton oil blanket structure and is equipped with the answer spring, can realize making the case bear thrust when high-speed rotatory, and ensure that the case can normally reset, simultaneously through one side fixedly connected with linear electric motor shaft of linear electric motor, the one end of linear electric motor shaft runs through valve body and spacing cutting ferrule in proper order and extends to the inside of spacing cutting ferrule, and the linear electric motor shaft extends to the thrust steel ball of the inside terminal surface fixedly connected with of spacing cutting ferrule and case axle head annular groove looks adaptation, can realize making steel ball and case axle head contact, reduce the friction when the.

(4) This dual-purpose valve of proportional flow control and high-speed switch based on bi-motor through the opposite side fixedly connected with linear electric motor adjusting hand wheel at linear electric motor, can be convenient for realize the manual control when automatic control is out of control or the case chucking, and the manual control when the opposite side fixedly connected with rotating electrical machines adjusting hand wheel of rethread rotating electrical machines can realize being convenient for automatic control is out of control or the case chucking.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

fig. 2 is a three-dimensional cross-sectional view of the limiting card sleeve structure of the utility model;

FIG. 3 is a schematic perspective view of the valve element and the limiting shoulder of the present invention;

fig. 4 is a schematic structural view of the utility model in the initial zero position working position;

fig. 5 is a schematic diagram of the relative position relationship between the valve sleeve window and the valve core opening when the utility model is in the initial zero position working position;

FIG. 6 is a schematic structural view of the first-stage displacement valve port closing position of the present invention;

FIG. 7 is a schematic diagram showing the relative position relationship between the valve sleeve window and the valve core opening when the first-stage displacement valve port of the present invention is in the closed operating position;

FIG. 8 is a schematic structural view of the first-stage displacement valve port opening position of the present invention;

FIG. 9 is a schematic diagram showing the relative position relationship between the valve sleeve window and the valve core opening when the first-stage displacement valve port of the present invention is in the open working position;

FIG. 10 is a schematic structural view of the high-speed switch operating position of the second-stage displacement valve port of the present invention;

fig. 11 is a schematic diagram of the relative position relationship between the valve sleeve window and the valve core opening when the valve is in the second-stage displacement valve port high-speed switch working position of the present invention.

In the figure, a 1-rotating motor, a1 a-rotating motor adjusting hand wheel, a 2-rotating motor mounting cover plate, a 3-framework oil seal, a 4-return spring, a 5-valve sleeve, a 5 a-valve sleeve first window, a 5 b-valve sleeve second window, a 6-valve core, a 6 a-limiting shoulder, a 6a 1-arc slideway, a 6a 2-first contact surface, a 6a 3-second contact surface, a 6a 4-third contact surface, a 6 b-valve core rectangular through opening, a 6 c-valve core shaft end annular groove, a 7-valve body, a 7 a-oil inlet, a 7 b-oil outlet, an 8-linear motor mounting cover plate, a 9-linear motor, a 9 a-linear motor adjusting hand wheel, a 9 b-linear motor shaft, a 9 c-thrust steel ball, a thrust steel ball, the rotary valve comprises a 10-limiting cutting sleeve, a 10 a-limiting cutting sleeve fixed connection key block, a 11-thrust bearing, a 12-valve sleeve and valve body circumferential limiting key block, a 13-fastening screw and a 14-rotary motor shaft sliding key groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 11, an embodiment of the present invention provides a technical solution: a dual-purpose valve for proportional flow control and high-speed switching based on dual motors comprises a valve body 7, a rotating motor 1 and a linear motor 9, wherein one side of the rotating motor 1 is fixedly connected with one side of the valve body 7 through a rotating motor mounting cover plate 2, one side of the linear motor 9 is fixedly connected with the other side of the valve body 7 through a linear motor mounting cover plate 8, an oil inlet 7a is formed in the bottom of the valve body 7, an oil outlet 7b is formed in the top of the valve body 7, a linear motor adjusting hand wheel 9a is fixedly connected with the other side of the linear motor 9, a rotating motor adjusting hand wheel 1a is fixedly connected with the other side of the rotating motor 1, a valve sleeve 5 is fixedly connected inside the valve body 7, a first valve sleeve window 5a and a second valve sleeve window 5b are sequentially formed in the bottom of the valve sleeve 5 from right to left, liquid flows passing through the first valve sleeve window 5a and the second valve sleeve window, a limiting cutting sleeve 10 is clamped in one side of the valve body 7, which is positioned at one side of the valve sleeve 5, through a valve sleeve and a valve body circumferential limiting key block 12, one side of the limiting cutting sleeve 10 is fixedly connected with one side of the valve sleeve 5 through a fastening screw 13, both sides of the inner wall of the limiting cutting sleeve 10 are fixedly connected with limiting cutting sleeve fixed linkage blocks 10a, the interior of the valve sleeve 5 is slidably connected with a valve core 6, one end of the output end of a rotating motor 1 sequentially penetrates through the valve body 7 and the valve sleeve 5 and extends to the interior of the valve sleeve 5, one end of the output end of the rotating motor 1 extending to the interior of the valve sleeve 5 is slidably connected with one end of a valve core 6 through a rotating motor shaft sliding key slot 14, the penetrating part of the output shaft of the rotating motor 1 and the valve body 7 is sealed through a framework oil seal structure 3, one end of the valve core 6, which is, when the linear motor 9 is contracted and reset, the return spring 4 can act on the thrust bearing 11 to return the valve core 6, so that the whole valve can automatically return to the zero position.

One end of the valve core 6 is fixedly connected with a limiting shoulder 6a, one side of the limiting shoulder 6a is respectively provided with an arc-shaped slideway 6a1 matched with the limiting clamping sleeve fixed connection key block 10a, a first contact surface 6a2, a second contact surface 6a3 and a third contact surface 6a4, the outer surface of the valve core 6 is provided with a valve core rectangular through opening 6b, the end surface of one end of the valve core 6 is provided with a valve core shaft end annular groove 6c, one side of the linear motor 9 is fixedly connected with a linear motor shaft 9b, one end of the linear motor shaft 9b sequentially penetrates through the valve body 7 and the limiting clamping sleeve 10 and extends to the inside of the limiting clamping sleeve 10, and the end surface of the linear motor shaft 9b extending to the inside of the limiting clamping sleeve 10 is fixedly connected with a thrust steel ball 9c matched with the valve core.

The working principle is as follows: 1) the switching mechanism is in the initial zero working position

Referring to fig. 4 and 5, when the linear motor 9 is in the zero position, the limiting sleeve fixing key block 10a inside the limiting sleeve 10 is just clamped inside the second contact surface 6a3 on the limiting shoulder 6a, and because the valve core rectangular through opening 6b is completely staggered with the valve sleeve first window 5a, the valve body 7, the valve sleeve 5 and the valve core 6 cannot form a through-flow valve port at this time, that is, all valve ports of the dual-motor based proportional flow control and high-speed switching dual-purpose valve are in a closed state and cannot be filled with oil, and at this time, the corresponding position is the initial zero position working position of the dual-motor based proportional flow control and high-speed switching dual-purpose valve.

2) The switching mechanism is in the first-stage displacement valve port closing working position

Referring to fig. 6 and 7, as the linear motor 9 extends, the linear motor shaft 9b connected to the linear motor 9 is driven to push the valve element 6 to move axially leftward, and when the linear motor 9 operates for a period of time, the linear motor shaft 9b extends by a corresponding length, so that the valve element 6 moves leftward by a corresponding distance, and meanwhile, the upper surface of the limiting sleeve fixing key block 10a inside the limiting sleeve 10 is always in close contact with the first contact surface 6a2, and at this time, the limiting sleeve fixing key block 10a inside the limiting sleeve 10 and the third contact surface 6a4 are located on the same vertical surface, and the rectangular through opening 6b of the valve element and the first window 5a of the valve sleeve are also located on the same vertical surface, but still in a staggered state, so that the valve body 7, the valve sleeve 5 and the valve element 6 cannot form a through-flow valve port, that is a first-stage displacement closing operating position.

3) The switching mechanism is in the first-stage displacement valve port opening working position

Referring to fig. 8 and 9, at this time, the rotating motor 1 is controlled to rotate clockwise by a certain angle, so that the valve core 6 also rotates clockwise by a certain angle, at this time, the limiting cutting sleeve fixed connection key block 10a inside the limiting cutting sleeve 10 has completely slid into the groove and is in close contact with the third contact surface 6a4, at this time, the rectangular through opening 6b of the valve core completely coincides with the first window 5a of the valve sleeve, so that the valve body 7, the valve sleeve 5 and the valve core 6 form a through-flow valve port, so that hydraulic oil flows out from the oil inlet 7a, the first window 5a of the valve sleeve, the rectangular through opening 6b of the valve core and the oil outlet 7b in sequence, so as to form an oil through-flow oil passage, and by proportionally controlling the rotating angle of the rotating motor 1, proportional adjustment of the valve port flow.

4) The switching mechanism is in the working position of the second-stage displacement valve port high-speed switch

Referring to fig. 10 and 11, after the first-stage displacement is completed, the rotating motor 1 rotates counterclockwise by a corresponding angle, so that the limiting cutting sleeve fixing key block 10a inside the limiting cutting sleeve 10 is separated from the third contact surface 6a4 and attached to the first contact surface 6a2, then the linear motor 9 is started to continue to extend out the linear motor shaft 9b, and push the valve core 6 to continue to move leftward, so that the limiting cutting sleeve fixing key block 10a inside the limiting cutting sleeve 10 is firstly separated from the first contact surface 6a2, then the limiting cutting sleeve fixing key block 10a inside the limiting cutting sleeve 10 is completely separated from the arc-shaped slideway 6a1, and then the rotating motor 1 is started to completely coincide the valve core rectangular through opening 6b with the valve sleeve second window 5b, so that the valve body 7, the valve sleeve 5 and the valve core 6 form a through valve port, and hydraulic oil flows out from the oil inlet 7a, the valve sleeve second window 5b, the valve core rectangular through opening 6b and the oil outlet 7b in sequence, therefore, an oil passage is formed, the limiting cutting sleeve fixed key block 10a in the limiting cutting sleeve 10 is not bound any more at this time, and along with the continuous rotation of the rotating motor 1, the valve is continuously switched between the valve port closing working position and the valve port opening working position to realize large-flow quick on-off excitation, the vibration frequency of the valve can be proportionally controlled by proportionally controlling the rotating speed of the rotating motor 1, the vibration amplitude of the valve can be proportionally controlled by proportionally controlling the axial displacement of the linear motor 9, and the valve is the second-stage displacement valve port high-speed switch working position at this time.

In summary, the following steps:

the utility model discloses can realize the special structure design through the adoption, control through rotating electrical machines 1 and linear electric motor 9, change the cooperation relation between spacing circular bead 6a and the spacing cutting ferrule 10, make it can confirm initial zero-bit work position fast, possess two-stage axial displacement, work position about two after the first order displacement, can realize proportional flow control, high-speed switch work position after the second level displacement is crossed, can realize the excitation of large-traffic quick break-make, and the equal proportional control of its vibration frequency and vibration amplitude, fine realization is through improving case 6 switching structure, make things convenient for people to realize proportional flow control and the high-speed on-off control to the hydrovalve simultaneously, make the range of application more extensive, control accuracy is higher, and the purpose of better control hydraulic medium's proportion has been reached, from the use that has made things convenient for people greatly.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a dual-purpose valve of proportional flow control and high-speed switch based on bi-motor, includes valve body (7), rotating electrical machines (1) and linear electric motor (9), one side of rotating electrical machines (1) is through one side fixed connection of rotating electrical machines installation apron (2) and valve body (7), and one side of linear electric motor (9) is through the opposite side fixed connection of linear electric motor installation apron (8) and valve body (7), its characterized in that: a valve sleeve (5) is fixedly connected inside the valve body (7), a first valve sleeve window (5a) and a second valve sleeve window (5b) are sequentially formed in the bottom of the valve sleeve (5) from right to left, a limiting cutting sleeve (10) is clamped in one side, located in the valve sleeve (5), of the valve body (7) through the valve sleeve and a valve body circumferential limiting key block (12), one side of the limiting cutting sleeve (10) is fixedly connected with one side of the valve sleeve (5) through a fastening screw (13), limiting cutting sleeve fixing key blocks (10a) are fixedly connected to two sides of the inner wall of the limiting cutting sleeve (10), and a valve core (6) is slidably connected inside the valve sleeve (5);

one end of the valve core (6) is fixedly connected with a limiting shoulder (6a), one side of the limiting shoulder (6a) is respectively provided with an arc-shaped slide way (6a1) matched with the limiting clamping sleeve fixed connection key block (10a), a first contact surface (6a2), a second contact surface (6a3) and a third contact surface (6a4), the outer surface of the valve core (6) is provided with a valve core rectangular through opening (6b), and the end surface of one end of the valve core (6) is provided with a valve core shaft end annular groove (6 c).

2. The dual-purpose valve for proportional flow control and high-speed switch based on double motors as claimed in claim 1, wherein: an oil inlet (7a) is formed in the bottom of the valve body (7), and an oil outlet (7b) is formed in the top of the valve body (7).

3. The dual-purpose valve for proportional flow control and high-speed switch based on double motors as claimed in claim 1, wherein: one end of the output end of the rotating motor (1) sequentially penetrates through the valve body (7) and the valve sleeve (5) and extends into the valve sleeve (5), and one end of the output end of the rotating motor (1) extending into the valve sleeve (5) is connected with one end of the valve core (6) in a sliding mode through a rotating motor shaft sliding key groove (14).

4. The dual-purpose valve for proportional flow control and high-speed switch based on double motors as claimed in claim 1, wherein: the penetrating position of the output shaft of the rotating motor (1) and the valve body (7) is sealed through a framework oil seal structure (3).

5. The dual-purpose valve for proportional flow control and high-speed switch based on dual motors as claimed in claim 1 or 4, wherein: one end of the valve core (6) close to the output shaft of the rotating motor (1) is fixedly connected with a thrust bearing (11), and a return spring (4) is sleeved on the outer surface of the valve core (6) between the thrust bearing (11) and the framework oil seal structure (3).

6. The dual-purpose valve for proportional flow control and high-speed switch based on double motors as claimed in claim 1, wherein: one side fixedly connected with linear motor shaft (9b) of linear motor (9), the one end of linear motor shaft (9b) runs through valve body (7) and spacing cutting ferrule (10) in proper order and extends to the inside of spacing cutting ferrule (10), and linear motor shaft (9b) extend to the terminal surface fixedly connected with of the inside of spacing cutting ferrule (10) and thrust steel ball (9c) of case axle head annular groove (6c) looks adaptation.

7. The dual-purpose valve for proportional flow control and high-speed switch based on double motors as claimed in claim 1, wherein: and a linear motor adjusting hand wheel (9a) is fixedly connected to the other side of the linear motor (9).

8. The dual-purpose valve for proportional flow control and high-speed switch based on double motors as claimed in claim 1, wherein: and a rotary motor adjusting hand wheel (1a) is fixedly connected to the other side of the rotary motor (1).

9. The dual-purpose valve for proportional flow control and high-speed switch based on double motors as claimed in claim 1, wherein: through the control of the rotating motor (1) and the linear motor (9), the matching relation between the limiting shoulder (6a) and the limiting clamping sleeve (10) is changed, so that the initial zero-position working position can be quickly determined, two-stage axial displacement is realized, two left and right working positions after the first-stage displacement can realize proportional flow control, and the high-speed switch working position after the second-stage displacement can realize large-flow quick on-off excitation.

10. The dual-purpose valve for proportional flow control and high-speed switching based on the dual-motor as claimed in claim 2, wherein: the liquid flow passing through the valve housing first windows (5a) and the valve housing second windows (5b) are both contained inside said oil inlet (7a) and oil outlet (7 b).