CN217207876U

CN217207876U - Valve element driving structure and slide valve

Info

Publication number: CN217207876U
Application number: CN202220683623.3U
Authority: CN
Inventors: 杨朋; 胡炳良; 郭堃; 周启迪
Original assignee: Changde Zhonglian Zhongke Hydraulic Co ltd
Current assignee: Changde Zhonglian Zhongke Hydraulic Co ltd
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2022-08-16
Anticipated expiration: 2032-03-24

Abstract

The utility model relates to a hydraulic valve, and discloses a valve core driving structure, which comprises a valve core connector, a grooving shaft and a linear driving unit; the one end of case connector is fixed on the case, and the other end is provided with the connector draw-in groove, the one end of fluting axle with linear drive unit is connected, and the other end is provided with fluting axle draw-in groove, the both ends of connector are provided with case end fixture block and drive end fixture block respectively, and pass through case end fixture block with the cooperation of connector draw-in groove with the case connector is connected, through the drive end fixture block with the cooperation of fluting axle draw-in groove with the fluting axle is connected, has simple structure, and power transmission performance is good, the strong advantage of tolerance ability. The utility model also discloses a sliding valve.

Description

Valve element driving structure and slide valve

Technical Field

The utility model relates to a hydrovalve specifically relates to a case drive structure. In addition, the utility model discloses still relate to a slide valve.

Background

In a hydraulic system, elements for controlling or regulating the flow direction, pressure and flow of hydraulic oil are collectively referred to as hydraulic valves. The hydraulic valve is widely applied to a hydraulic system, wherein a slide valve slides on a sealing surface by utilizing a valve core, the position of a fluid inlet channel and a fluid outlet channel is changed to control the flow direction of fluid, and the slide valve is widely applied to the hydraulic system, particularly a hydraulic reversing valve.

The valve core and the sealing surface of the slide valve need to form good matching, the leakage of fluid along a gap between the valve core and the sealing surface can be increased when the matching is too loose, the sliding resistance of the valve core can be increased when the matching is too tight, and the controllability of the slide valve is reduced. In order to ensure good sliding of the spool and prevent jamming of the spool, it is generally necessary to keep the center axis of the spool and the driving shaft of the linear driving unit on the same straight line so as to avoid the driving force from forming an inclination angle with the sliding direction of the spool and reduce the controllability of the spool. Due to actual machining and assembly errors, coaxiality and straightness between a central shaft of the valve core and a driving shaft of the linear driving unit are difficult to ensure, and a valve core driving structure is generally required to have certain tolerance capability, so that coaxiality and straightness deviation in a certain range can be converted, and the valve core is ensured to slide well along a sealing surface.

The existing valve core driving structure is generally provided with a spherical connecting piece between the valve core and the linear driving unit, and the driving force coaxiality and the linearity are converted by using the spherical connecting piece. The spherical connecting piece usually forms the transmission of power between the different drive structures through insertion groove, jump ring or spring, and not only the cooperation structure is complicated, and the cooperation required precision is high, has increased production maintenance cost, and moreover, the spherical connecting piece carries out the transmission of power through the sphere, forms tangential force on the fitting surface usually, leads to the deformation of cooperation groove, influences the cooperation precision.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a case drive structure is provided, its simple structure, power transmission performance is good, and tolerance ability is strong.

The utility model discloses a technical problem that further will solve provides a slide valve, and its drive simple structure, and controllability is good.

In order to solve the above technical problem, an aspect of the present invention provides a valve element driving structure, including a valve element connector, a grooving shaft, and a linear driving unit; the one end of case connector is fixed on the case, and the other end is provided with the connector draw-in groove, the one end of fluting axle with linear drive unit is connected, and the other end is provided with fluting axle draw-in groove, the both ends of connector are provided with case end fixture block and drive end fixture block respectively, and pass through case end fixture block with the cooperation of connector draw-in groove with the case connector is connected, through the drive end fixture block with the cooperation of fluting axle draw-in groove with the fluting axle is connected.

Preferably, the connector includes a valve core end engaging groove and a driving end engaging groove, the valve core end engaging block is formed between the valve core end engaging groove and one end face of the connector, the driving end engaging block is formed between the driving end engaging groove and the other end face of the connector, and a middle engaging block is formed between the valve core end engaging groove and the driving end engaging groove. In the preferred technical scheme, the valve core end clamping groove and the driving end clamping groove are respectively matched with the valve core connector and the grooving shaft, so that the connection stability and the matching precision are improved; the middle clamping block can be clamped between the valve core connector and the slotted shaft, and the fit clearance between the middle clamping block and the slotted shaft is reduced.

Further preferably, the connector is cylindrical, and the valve core end clamping groove and the driving end clamping groove are coaxial annular grooves in the side face of the cylindrical material. In this preferred technical scheme, the connector is cylindric symmetrical structure, and the stability of force transmission is higher.

Preferably, one end of the valve core connector is provided with a connecting thread, the connecting thread is fixed on the valve core, a connector clamping groove is formed between the end part of the other end of the valve core connector and a connector clamping edge, and a connector clamping port is formed on the connector clamping edge. Through this preferred technical scheme, the connector can pass the connector joint interface and be connected with the case connector for case end fixture block better block is in the connector draw-in groove, and the center pin position of case connector has further improved the power transmission performance between the two.

Preferably, the grooved shaft further includes a driving unit coupling groove, and is connected with the linear driving unit through the driving unit coupling groove. In this preferred technical scheme, sharp drive unit is connected through the drive unit spread groove with the fluting axle, and it is more convenient to connect to be favorable to improving the axiality between sharp drive unit and the fluting axle.

Further preferably, a fixed interlayer is formed between the grooved shaft clamping groove and the driving unit connecting groove, and the grooved shaft clamping groove and the driving unit connecting groove penetrate through the fixed interlayer through a countersunk head screw to be fixedly connected with the linear driving unit. Through this preferred technical scheme, can improve the reliability and the joint strength of being connected between fluting axle and the linear drive unit.

Preferably, the valve core connector is integrally formed on the valve core, and the grooved shaft is integrally formed on the linear driving unit. Through this preferred technical scheme, the connection between case connector and case, fluting axle and the linear drive unit is more reliable, and connection stability is also higher.

Preferably, the linear driving unit includes a linear motion conversion member and a driving motor, and the linear motion conversion member is connected to the grooved shaft and is adapted to move linearly in an axial direction of the grooved shaft under the driving of the driving motor. In this preferred technical scheme, driving motor can make rotary motion under the drive of electric energy, and linear motion driving medium converts driving motor's rotary motion into the linear motion of fluting axle direction.

Further preferably, the linear motion conversion member is a rack, and a gear is mounted on an output shaft of the driving motor and engaged with the rack. Through this preferred technical scheme, when the gear is rotatory under driving motor's drive, can promote the rack and make rectilinear motion, rectilinear motion conversion simple structure, processing and simple to operate.

Preferably, the linear motion converter is a ball screw, an output shaft of the driving motor is connected to a screw of the ball screw, and the grooved shaft is connected to a nut of the ball screw. Through this preferred technical scheme, when the screw rod is rotatory under driving motor's drive, can promote the nut and make rectilinear motion on the screw rod, rectilinear motion's drive force is more even, and the precision of motion is also higher.

The utility model discloses the second aspect provides a slide valve, has used in this slide valve the utility model discloses the case drive structure that the first aspect provided.

Through the technical scheme, the utility model discloses a case drive structure, through the connector as the intermediate junction spare between case connector and the fluting axle, realize the transmission of driving force between sharp drive unit and the case, and all be connected through the cooperation between fixture block and the draw-in groove between connector and case connector and the fluting axle, between connector and the case connector, and all there is not fixed connection structure between connector and the fluting axle, can produce slip and the inflection in the certain limit, therefore can carry out the conversion transmission of drive power axiality and straightness accuracy in the certain limit, the requirement to axiality and straightness accuracy between case and the sharp drive unit has been reduced, the tolerance ability of power transmission performance and case drive structure has been improved. The valve core connector, the connector and the grooving shaft are in surface contact with each other through the clamping block and the clamping groove to transfer force, and the reliability and the stability of force transfer are higher. The valve core connector, the connector and the grooving shaft are connected without any special tool, so that the installation and the maintenance are more convenient, the production and the maintenance efficiency are higher, and the production and use cost is reduced.

The utility model discloses a slide valve has used the utility model discloses a case drive structure, drive structure is simpler, and the controllability of slide valve is also better.

Other technical features and advantages of the present invention will be further described in the following detailed description.

Drawings

Fig. 1 is a schematic structural view of an embodiment of a valve core driving structure of the present invention;

fig. 2 is a cross-sectional view of an embodiment of the valve cartridge drive structure of the present invention;

fig. 3 is a schematic structural view of a grooved shaft of an embodiment of the valve core driving structure of the present invention;

fig. 4 is a schematic structural view of a connector according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a valve element connector according to an embodiment of the valve element driving structure of the present invention;

fig. 6 is a sectional view of another embodiment of the valve core driving structure of the present invention.

Description of the reference numerals

1 valve core connector 11 connector clamping groove

12 connecting thread 13 connecting head clamping edge

14 connector joint interface 15 middle flange

2 connector 21 valve core end clamping block

22 drive end fixture block 23 valve core end clamping groove

24 drive end clamping groove 25 middle clamping block

3 grooving shaft 31 grooving shaft clamping groove

32 drive unit attachment slot 33 securing compartment

34 connector connecting edge 35 connector card interface

36 drive unit connection edge 37 drive unit card interface

4 valve core 5 countersunk screw

61 rack 62 ball screw

621 screw 622 nut

7 lead screw connecting piece

Detailed Description

In the description of the present invention, unless expressly stated or limited otherwise, the terms "mounted" and "connected" are to be construed broadly, e.g., the term "connected" may be a fixed connection, a removable connection, or an integral connection; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings, and it should be understood that the embodiments described herein are merely for purposes of illustration and explanation, and the scope of the present invention is not limited to the following embodiments.

As shown in fig. 1 and 2, an embodiment of the valve core driving structure of the present invention includes a valve core connector 1, a connector 2, a grooved shaft 3, and a linear driving unit. One end of the valve core connector 1 is fixed on the valve core 4, is usually connected with one end of the valve core 4 and is connected with the middle part of the end surface of the valve core 4, so that the central axis of the valve core 4 and the central axis of the valve core connector 1 are on the same straight line, and the valve core connector 1 and the valve core 4 can be connected by adopting various feasible connection modes. The other end of case connector 1 is provided with connector draw-in groove 11, and connector draw-in groove 11 sets up the side that is close to the tip at case connector 1 usually, and the center pin setting of perpendicular to case connector 1, and connector draw-in groove 11 passes the center pin of case connector 1, just so makes the drive power through connector draw-in groove 11 transmission can act on the center pin of case connector 1. One end of the grooved shaft 3 is fixedly connected with the linear driving unit, and generally, the grooved shaft 3 is oppositely connected with the central shaft of the linear driving unit. The other end of the grooved shaft 3 is provided with a grooved shaft catching groove 31, and likewise, the grooved shaft catching groove 31 is generally provided at a side of the grooved shaft 3 near the end, disposed perpendicular to the central axis of the grooved shaft 3, and the grooved shaft catching groove 31 passes through the central axis of the grooved shaft 3, so that the driving force transmitted through the grooved shaft catching groove 31 can be transmitted along the central axis of the grooved shaft 3. Both ends of connector 2 are provided with case end fixture block 21 and drive end fixture block 22 respectively, case end fixture block 21 and the equal perpendicular to connector 2's of drive end fixture block 22 center pin set up, through inserting case end fixture block 21 in connector draw-in groove 11, connect connector 2 on case connector 1, through inserting drive end fixture block 22 grooving axle draw-in groove 31, connect connector 2 on grooving axle 3, thereby with case 4, case connector 1, connector 2, grooving axle 3 and sharp drive unit link together in proper order, make case 4 can be downthehole linear motion at the case under sharp drive unit's drive. Because the connector 2 and the valve core connector 1 are connected by inserting the valve core end fixture block 21 into the connector clamping groove 11, and a fixed connecting structure is not arranged between the valve core end fixture block 21 and the connector clamping groove 11, the middle valve core end fixture block 21 and the connector clamping groove 11 can slide in a certain range; meanwhile, the connector 2 is connected with the grooved shaft 3 through the driving end fixture block 22 inserted into the grooved shaft slot 31, and similarly, there is no fixed connection structure between the driving end fixture block 22 and the grooved shaft slot 31, so that the driving core end fixture block 22 can slide within a certain range with the grooved shaft slot 31, and the opening directions of the connector slot 11 and the grooved shaft slot 31 can be different, thereby allowing the center shaft of the valve core 4 and the center shaft of the linear driving unit to have a certain coaxiality deviation, without affecting the transmission of the driving force to the center shaft of the valve core 4. In addition, because a certain gap also exists between the valve core end clamping block 21 and the connector clamping groove 11, and between the valve core end clamping block 22 and the grooved shaft clamping groove 31 in the axial direction of the connector 2, a certain inclination angle can be formed between the valve core end clamping block 21 and the connector clamping groove 11, and between the valve core end clamping block 22 and the grooved shaft clamping groove 31, so that a certain linearity deviation is allowed to be formed between the central shaft of the valve core 4 and the central shaft of the linear driving unit, the driving force in the central shaft direction of the linear driving unit is not influenced to be transmitted to the central shaft of the valve core 4, the valve core 4 is effectively prevented from being clamped in a valve core hole, and the controllability of the valve core is improved. Because the requirement on the coaxiality and the straightness between the linear driving unit and the valve core 4 is low, the requirement on the manufacturing precision of the valve core driving structure is low, the assembly of the valve core driving structure is convenient, and the production cost of the valve core driving structure is reduced.

In some embodiments of the valve core driving structure of the present invention, as shown in fig. 1, 2 and 4, the connector 2 is provided with a valve core end engaging groove 23 and a driving end engaging groove 24. The spool-end engaging groove 23 and the drive-end engaging groove 24 are generally disposed in parallel on the side surface of the connector 2 in a direction perpendicular to the central axis of the connector 2, and the spool-end engaging groove 23 and the drive-end engaging groove 24 may be disposed on one side or multiple sides of the connector 2, or may be disposed annularly along the side surface of the connector 2. The valve core end clamping block 21 is formed between the valve core end clamping groove 23 and one end face of the connector 2 adjacent to the valve core end clamping groove 23, the driving end clamping block 22 is formed between the driving end clamping groove 24 and one end face of the connector 2 adjacent to the driving end clamping groove 24, and the valve core end clamping groove 23 and the driving end clamping groove 24 are arranged to facilitate the valve core end clamping block 21 and the driving end clamping block 22 to be inserted into the clamping grooves. Form into middle fixture block 25 between case end block groove 23 and drive end block groove 24, when connector 2 and case connector 1 and slotted shaft 3 form to be connected, middle fixture block 25 is located between the terminal surface of case connector 1 and slotted shaft 3, helps the location of case connector 1 and slotted shaft 3 to can improve the power transmissibility between connector 2 and case connector 1 and slotted shaft 3.

As a specific implementation of the utility model discloses a case drive structure, as shown in fig. 4, connector 2 is wholly cylindrical, for parallel processing goes up case end block groove 23 and drive end block groove 24 and forms on the lateral surface of cylindrical material, case end block groove 23 and drive end block groove 24 are the coaxial annular recess of the cylindrical center pin of perpendicular to, form annular case end fixture block 21 between the cylindrical terminal surface of case end block groove 23 and neighbouring one end, form annular drive end fixture block 22 between the cylindrical terminal surface of drive end block groove 24 and neighbouring one end, form annular middle fixture block 25 between case end block groove 23 and drive end block groove 24. At this time, the shapes of the valve core connector 1 and the grooved shaft 3 are also set to the shapes corresponding to the connector 2, as shown in fig. 5, a connector clamping opening 14 matched with the valve core end clamping groove 23 is arranged between the connector clamping groove 11 of the valve core connector 1 and the end surface of the valve core connector 1, as shown in fig. 3, a connector clamping opening 35 matched with the drive end clamping groove 24 is arranged between the grooved shaft clamping groove 31 of the grooved shaft 3 and the end surface of the grooved shaft 3, so that the connector 2 can be connected at the central axis position of the valve core connector 1 and the grooved shaft 3, the mutual force transmission can be performed at a position closer to the central axis, and the force transmission performance and the tolerance capacity of the coaxiality deviation and the linearity deviation of the central axis are improved.

In some embodiments of the present invention, as shown in fig. 5, one end of the valve core connector 1 is provided with a connecting thread 12, and the end of the valve core 4 is provided with a matching thread, and the valve core connector 1 is fixed at the end of the valve core 4 by the matching of the connecting thread 12 and the end thread of the valve core 4. The connector draw-in groove 11 sets up in the side of the 1 other end of case connector, for the bar hole that is on a parallel with the terminal surface, and this bar hole extends along the direction of 1 axis of perpendicular to case connector, and passes this axis. The width of the connector slot 11 is greater than the width (or diameter) of the valve core end fixture block 21, so that a certain radial gap exists between the valve core end fixture block 21 and the connector slot 11. A connector clamping edge 13 is formed between the connector clamping groove 11 and the end surface of the adjacent valve core connector 1, and a connector clamping port 14 extending from the opening of the connector clamping groove 11 to the middle of the valve core connector 1 is arranged on the connector clamping edge 13. When the valve core end clamping block 21 of the connector 2 is clamped in the connector clamping groove 11, the connector clamping interface 14 is clamped in the valve core end clamping groove 23, so that the connector 2 is connected to the central axis of the valve core connector 1, and reliable connection between the connector 2 and the valve core connector 1 is formed.

In some embodiments of the valve core driving structure of the present invention, as shown in fig. 3, the side surface of the grooved shaft 3 is provided with a grooved shaft locking groove 31 and a driving unit connecting groove 32 which are parallel to each other. A connector connecting edge 34 is formed between the end surface of the grooved shaft slot 31 and the end surface of the grooved shaft 3 adjacent to one end, a connector clamping opening 35 is arranged on the connector connecting edge 34, when the connector 2 is connected with the grooved shaft 3, the driving-end clamping block 22 is clamped in the grooved shaft slot 31, and the connector clamping opening 35 is clamped in the driving-end clamping slot. A driving unit connecting edge 36 is formed between the end face of the driving unit connecting groove 32 and the end face of the end, which is adjacent to the grooved shaft 3, of the grooved shaft 3, a driving unit clamping opening 37 is formed in the driving unit connecting edge 36, and the linear driving unit penetrates through the driving unit clamping opening 37 and is clamped and connected with the driving unit connecting groove 32, so that the linear driving unit can be connected to the central shaft position of the grooved shaft 3.

As a specific embodiment of the valve core driving structure of the present invention, as shown in fig. 2 and fig. 3, a fixed interlayer 33 is formed between the grooved shaft clamping groove 31 and the driving unit connecting groove 32, the middle portion of the fixed interlayer 33 is provided with a fixing hole, the countersunk head screw 5 passes through the fixing hole on the fixed interlayer 33 and is fixed on the linear driving unit, thereby forming a fixed connection between the grooved shaft 3 and the linear driving unit, and improving the stability of connection between the grooved shaft 3 and the linear driving unit.

In some embodiments of the valve core driving structure of the present invention, the valve core connector 1 is integrally formed on the valve core 4, or the end of the valve core connector 1 on one side of the valve core 4 is processed; the grooved shaft 3 is integrally formed on the linear drive unit, or the grooved shaft 3 is machined at the end of the linear drive unit. Therefore, the valve core connector 1 and the valve core 4, and the linear driving unit and the grooved shaft 3 can form stable and reliable connection, the installation of the valve core driving structure is more convenient, and the processing difficulty of the valve core 4 and the linear driving device is increased.

In some embodiments of the valve core driving structure of the present invention, as shown in fig. 1, 2 and 6, the linear driving unit includes a linear motion converting member and a driving motor (not shown in the drawings). The driving motor can form rotary motion under the effect of electric power, and the linear motion converting part can convert the rotary motion of driving motor into linear motion. The linear motion converting member is connected to the grooved shaft 3, and transmits the linear motion formed by the linear motion converting member to the grooved shaft 3. Of course, the linear drive unit may also use a drive device capable of directly forming a linear motion, such as a linear motor, a hydraulic drive device, or the like.

As a specific embodiment of the valve core driving structure of the present invention, as shown in fig. 1 and 2, the linear motion converting member is a rack 61. A gear is mounted on an output shaft of the driving motor, and when the driving motor rotates, the gear is driven to rotate, the gear is meshed with the rack 61, the rack 61 is driven to do linear motion by the rotation of the gear, and the direction of the linear motion of the rack 61 can be controlled by controlling the rotation direction of the driving motor.

As a specific embodiment of the valve element driving structure of the present invention, as shown in fig. 6, the linear motion converting member is a ball screw 62. The ball screw 62 includes a screw 621 and a nut 622, an output shaft of the driving motor is connected to the screw 621 of the ball screw 62, when the driving motor rotates, the screw 621 is driven to rotate, the nut 622 screwed on the screw 621 is driven by the rotation of the screw 621 to move linearly on the screw 621, and the direction of the linear movement of the nut 622 can be controlled by controlling the rotation direction of the driving motor. The nut 622 of the ball screw 62 is connected to the grooved shaft 3 through the screw connecting member 7, and specifically, one end of the screw connecting member 7 is fixedly connected to the nut 622, and the other end thereof can be engaged with the driving unit connecting groove 32 through an engaging structure, or can be fixed to the fixed partition 33 through a countersunk head screw 5. The linear motion of the nut 622 drives the grooved shaft 3, and finally drives the valve core 4 to make linear motion, so as to form valve position switching of the slide valve.

The utility model provides a slide valve has used the utility model discloses the case drive structure of any embodiment, therefore can transmit the linear motion stable reliable ground that the straight line drive unit formed for the case slides in the case hole through simple structure for form the switching of slide valve position. Because the utility model discloses a case drive structure's power transmission performance is better to there are certain axiality deviation and straightness accuracy deviation between the direction of motion that can allow linear drive power and case, therefore the required precision to the sliding valve structure is lower, and the controllability of sliding valve is better, has reduced the manufacturing cost of sliding valve, has improved the life of sliding valve.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "a specific implementation," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present disclosure, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The technical idea of the present invention is that it is possible to combine the simple variants of the technical solution of the present invention, including each specific technical feature, in any suitable way. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. A valve core driving structure is characterized by comprising a valve core connector (1), a connector (2), a grooving shaft (3) and a linear driving unit; the one end of case connector (1) is fixed on case (4), and the other end is provided with connector draw-in groove (11), the one end of fluting axle (3) with sharp drive unit is connected, and the other end is provided with fluting axle draw-in groove (31), the both ends of connector (2) are provided with case end fixture block (21) and drive end fixture block (22) respectively, and pass through case end fixture block (21) with the cooperation of connector draw-in groove (11) with case connector (1) is connected, through drive end fixture block (22) with the cooperation of fluting axle draw-in groove (31) with fluting axle (3) is connected.

2. The spool drive structure according to claim 1, wherein the connector (2) includes a spool end engagement groove (23) and a drive end engagement groove (24), the spool end engagement block (21) is formed between the spool end engagement groove (23) and one end face of the connector (2), the drive end engagement block (22) is formed between the drive end engagement groove (24) and the other end face of the connector (2), and an intermediate engagement block (25) is formed between the spool end engagement groove (23) and the drive end engagement groove (24).

3. The cartridge drive structure according to claim 2, wherein the connector (2) is cylindrical, and the cartridge end engagement groove (23) and the drive end engagement groove (24) are coaxial annular grooves of a cylindrical side surface.

4. The valve core driving structure according to claim 1, wherein one end of the valve core connector (1) is provided with a connecting thread (12) and is fixed on the valve core (4) through the connecting thread (12), a connector clamping edge (13) is formed between the connector clamping groove (11) and the other end of the valve core connector (1), and a connector clamping interface (14) is arranged on the connector clamping edge (13).

5. The spool drive arrangement according to claim 1, characterized in that the slotted shaft (3) further comprises a drive unit connection slot (32) and is connected with the linear drive unit via the drive unit connection slot (32).

6. The valve core driving structure according to claim 5, wherein a fixed interlayer (33) is formed between the grooved shaft clamping groove (31) and the driving unit connecting groove (32), and the grooved shaft clamping groove and the driving unit connecting groove are fixedly connected with the linear driving unit through the fixed interlayer (33) by a countersunk head screw (5).

7. The cartridge drive arrangement according to claim 1, characterized in that the cartridge connection head (1) is integrally formed on the cartridge (4) and the slotted shaft (3) is integrally formed on the linear drive unit.

8. The valve core driving structure according to any one of claims 1 to 7, wherein the linear driving unit comprises a linear motion converting member and a driving motor, the linear motion converting member is connected with the grooved shaft (3) and is adapted to perform a linear motion in an axial direction of the grooved shaft (3) under the driving of the driving motor.

9. The valve core driving structure according to claim 8, wherein the linear motion converting member is a rack (61), and a gear is mounted on an output shaft of the driving motor, and the gear is engaged with the rack (61).

10. The spool drive structure according to claim 8, wherein the linear motion converting member is a ball screw (62), an output shaft of the drive motor is connected to a screw of the ball screw (62), and the grooved shaft (3) is connected to a nut of the ball screw (62).

11. A spool valve comprising the spool drive structure according to any one of claims 1 to 10.