A rotary cutting valve with high sealing reliability

Abstract

The present invention discloses a rotary cut valve with high sealing reliability, comprising a valve body, a valve core assembly and a drive assembly, the valve body comprising a valve body and a valve head, a boss portion convexly provided at the bottom of the valve head, a main flow channel and a plurality of branch flow channels provided at the valve head, the valve core assembly comprising a stator valve core, a valve core transmission member, an elastic member, a support ring, a rotor valve core, a plurality of sealing rings provided between the stator valve core and the boss portion, the valve core transmission member comprising a connecting portion and a supporting portion, a mounting groove concavely provided at the top of the supporting portion, a rotor valve core provided in the mounting groove, a sealing gasket sandwiched between the bottom of the rotor valve core and the mounting groove, a power output end of the drive assembly being connected to the connecting portion, the drive assembly being able to drive the valve core transmission member to rotate, and the valve body being fixed on the drive assembly. The provision of the sealing ring and the sealing gasket improves the sealing performance of the rotary cut valve, and the support ring provides guidance and support for the valve core transmission member during assembly and use, ensuring that the rotor valve core can be accurately aligned with the stator valve core.

Description

Technical Field

[0001] The invention relates to the field of rotary cut valve technology, in particular to a rotary cut valve with high sealing reliability. Background Art

[0002] A rotary shear valve is a type of valve used to control the flow direction of a fluid. It changes the flow channel connected to the valve body through the relative movement between the valve core and the valve body.

[0003] In the prior art, a multi-channel rotary cut valve is disclosed, which includes a valve head, a valve body, a stator valve core and a rotor valve core. The stator valve core and the valve head are connected in a direct contact manner so that the flow channel on the stator valve core is aligned with the flow channel on the valve head. Under this structure, liquid leakage is likely to occur between the stator valve core and the valve head, and the rotor valve core and the valve seat are also connected in a direct contact manner, which is likely to cause liquid rotor valve core to leak from the rotor flow channel to the valve seat, resulting in low sealing performance between the valve core and the valve head and the valve body, and the valve seat is likely to be offset in the valve body under the action of the elastic force of the spring when the valve seat rotates, resulting in inaccurate positioning of the rotor valve core and the stator valve core, and further resulting in inaccurate alignment of the flow channel on the rotor valve core and the flow channel on the stator valve core, thereby affecting the normal use of the multi-channel rotary cut valve.

[0004] Therefore, it is necessary to design a new technical solution to solve the above problems. Summary of the invention

[0005] In view of this, the present invention aims at the defects of the prior art, and its main purpose is to provide a rotary cut valve with high sealing reliability, wherein a boss portion is convexly provided at the bottom of the valve head, and the boss portion extends into the accommodating groove of the valve body, so that the valve head and the valve body are more accurately connected, and a plurality of sealing rings are sandwiched between the stator valve core and the boss portion, and the setting of the sealing ring improves the sealing between the stator valve core and the boss portion, and a sealing gasket is sandwiched between the bottom of the rotor valve core and the mounting groove, and the setting of the sealing gasket improves the sealing between the bottom of the valve core and the mounting groove, thereby improving the sealing performance of the rotary cut valve, and the support ring has a guide groove that passes through the top and bottom, and the support part is slidably connected to the guide groove, and the two ends of the support ring are respectively against the outer periphery of the support part and the wall of the accommodating groove, and the support ring provides guidance and support for the valve core transmission member during assembly and use, ensuring that the rotor valve core can be accurately aligned with the stator valve core, and the setting of the exhaust channel can ensure that the valve head can be smoothly installed on the valve body after the stator valve core is assembled and that the valve core transmission member can rotate smoothly in the accommodating groove.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A rotary cutting valve with high sealing reliability, comprising:

[0008] A valve body, the valve body comprising a valve body and a valve head connected to the top of the valve body, the valve head being provided with a main flow channel and a plurality of branch flow channels arranged along the periphery of the main flow channel, the valve body being provided with a receiving groove for installing a valve core assembly, the periphery of the valve body being provided with an exhaust channel connected to the receiving groove, a boss portion being convexly provided at the bottom of the valve head, the ends of the main flow channel and the ends of the branch flow channels being both located at the bottom of the boss portion, the boss portion extending into the receiving groove and covering the receiving groove;

[0009] The valve core assembly is arranged in the accommodating groove, and the valve core assembly includes a stator valve core, a valve core transmission part, an elastic part, a support ring, and a rotor valve core. The stator valve core is fixed to the bottom of the boss part, and the stator valve core is provided with a first connecting hole corresponding to the main flow channel and a plurality of second connecting holes corresponding to the branch flow channels. A plurality of sealing rings are sandwiched between the stator valve core and the boss part, and the plurality of sealing rings are respectively located at the outer periphery of the main flow channel and the outer periphery of each branch flow channel. The valve core transmission part includes a connecting part exposed at the bottom of the valve body and a supporting part connected to the top of the connecting part. A bearing is arranged on the outer sleeve of the connecting part, and the connecting part is rotatably arranged in the accommodating groove through the bearing. The elastic part is sleeved outside the connecting part and sandwiched between the bearing and the support part. The support ring has a guide groove that passes through from top to bottom, the support part is slidably connected in the guide groove, the two ends of the support ring respectively abut against the outer periphery of the support part and the wall surface of the accommodating groove, the top of the support part is concavely provided with a mounting groove, the rotor valve core is arranged in the mounting groove, a sealing gasket is sandwiched between the bottom of the rotor valve core and the mounting groove, the rotor valve core is provided with a third communicating hole and a fourth communicating hole corresponding to the first communicating hole, the bottom of the rotor valve core is concavely provided with a rotor flow channel groove that connects the third communicating hole and the fourth communicating hole, the rotor valve core abuts against the bottom of the stator valve core under the elastic force of the elastic member, and the valve core transmission member can drive the rotor valve core to rotate together, so that the third communicating hole can be selectively connected with one of its second communicating holes;

[0010] A driving assembly, wherein the power output end of the driving assembly is connected to the connecting portion, the driving assembly can drive the valve core transmission member to rotate, and the valve body is fixed on the driving assembly.

[0011] As a preferred solution, the bottom of the boss portion corresponds to an outer periphery of the end of the main flow channel and an outer periphery of the end of the branch flow channel, and an annular groove is concave upward, and the sealing ring is arranged in the annular groove.

[0012] As a preferred embodiment, the accommodating groove includes a first groove recessed downward from the top of the valve body and a second groove recessed downward from the bottom wall of the first groove, the bottom of the support ring abuts against the bottom wall of the first groove, the bearing is installed in the second groove, and the connecting portion passes through the bottom wall of the second groove and is exposed at the bottom of the valve body.

[0013] As a preferred solution, the exhaust channel is connected to the first groove, and the exhaust channel is higher than the top of the support ring.

[0014] As a preferred solution, the bottom wall of the mounting groove is provided with a protruding column, and correspondingly, the bottom of the rotor valve core is provided with a recessed position upward, and the sealing gasket is provided with an avoidance hole for the protruding column to avoid, and the protruding column extends into the recessed position through the avoidance hole, and the valve core transmission component drives the rotor valve core to rotate together through the cooperation of the protruding column and the recessed position.

[0015] As a preferred solution, the drive assembly includes a motor, a connecting part, a code disk, and a motor control board. The connecting part includes a mounting part and a mating part connected to the mounting part. The mounting part is fixedly connected to the transmission shaft of the motor, and the connecting part is detachably connected to the mating part. The code disk is arranged on the connecting part, and the motor control board is provided with an optical coupler sensor corresponding to the code disk.

[0016] As a preferred solution, the connecting portion is provided with a card slot, and correspondingly, the matching portion is provided with a card protrusion, and the connecting portion is detachably connected to the matching portion through the matching of the card protrusion and the card slot.

[0017] As a preferred embodiment, the drive assembly also includes a motor mounting seat, the top of the motor mounting seat is recessed downwardly with a third groove, the motor is fixed to the bottom of the motor mounting seat, the drive shaft of the motor passes through the motor mounting seat and extends into the third groove, the connecting piece is located in the third groove, a fourth groove connected to the third groove is opened on the side of the motor mounting seat, the motor control board is fixed in the fourth groove, and the optical coupling sensor extends into the third groove.

[0018] As a preferred solution, the bottom of the valve body is mounted on the top of the motor mounting seat through a mounting plate, and a step groove is opened upward at the bottom of the valve body. Correspondingly, the mounting plate is provided with a through hole, and the bottom of the valve body extends into the through hole, and the top wall of the step groove abuts against the top of the mounting plate.

[0019] As a preferred solution, the outer periphery of the motor mounting seat is provided with an outer cover, the outer cover covers the motor and the motor control board, the top of the outer cover is against the bottom of the mounting plate, the bottom of the outer cover is open and is provided with a bottom plate covering the opening, and the bottom plate is provided with a communication interface electrically connected to the motor control board.

[0020] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0021] The main feature is that a boss portion is convexly arranged at the bottom of the valve head, and the boss portion extends into the accommodating groove of the valve body, so that the connection between the valve head and the valve body is more precise, and a plurality of sealing rings are sandwiched between the stator valve core and the boss portion. The setting of the sealing ring improves the sealing between the stator valve core and the boss portion, and a sealing gasket is sandwiched between the bottom of the rotor valve core and the mounting groove. The setting of the sealing gasket improves the sealing between the bottom of the valve core and the mounting groove, thereby improving the sealing performance of the rotary cut valve, and the support ring has a guide groove that runs through the top and bottom, and the support part is slidably connected in the guide groove, and the two ends of the support ring respectively abut against the outer periphery of the support part and the wall of the accommodating groove, and the support ring provides guidance and support for the valve core transmission member during assembly and use, ensuring that the rotor valve core can be accurately aligned with the stator valve core, and the setting of the exhaust channel can ensure that the valve head can be smoothly installed on the valve body after the stator valve core is assembled and that the valve core transmission member can rotate smoothly in the accommodating groove.

[0022] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional schematic diagram of a preferred embodiment of the present invention;

[0024] Figure 2 It is a cross-sectional schematic diagram of a preferred embodiment of the present invention;

[0025] Figure 3 It is a cross-sectional schematic diagram of the cooperation between the valve body and the valve core assembly of a preferred embodiment of the present invention;

[0026] Figure 4 It is an exploded schematic diagram of the cooperation between the valve body and the valve core assembly of a preferred embodiment of the present invention;

[0027] Figure 5 It is an exploded schematic diagram of the cooperation between the valve body and the valve core assembly of the preferred embodiment of the present invention from another perspective;

[0028] Figure 6 It is a schematic diagram of an exploded view of a driving assembly of a preferred embodiment of the present invention.

[0029] Description of the accompanying drawings:

[0030] 10. Valve body 11. Valve body

[0031] 111, receiving groove 112, exhaust channel

[0032] 113, first groove 114, second groove

[0033] 12. Valve head 121, main flow channel

[0034] 122, branch flow channel 123, boss part

[0035] 124, annular groove 101, step groove

[0036] 20. Valve core assembly 21. Stator valve core

[0037] 211, first connecting hole 212, second connecting hole

[0038] 22. Valve core transmission part 221. Connecting part

[0039] 222, support portion 223, mounting groove

[0040] 224, boss 23, elastic member

[0041] 24. Support ring 241. Guide groove

[0042] 25. Rotor valve core 251. Third communication hole

[0043] 252, fourth connecting hole 253, rotor flow channel groove

[0044] 254, recess 26, bearing

[0045] 201, card slot 30, drive assembly

[0046] 31. Motor 32. Connectors

[0047] 321, mounting portion 322, matching portion

[0048] 33. Code disk 34. Motor control board

[0049] 341, Optocoupler sensor 35, Motor mounting seat

[0050] 351, third groove 352, fourth groove

[0051] 36, outer cover 37, bottom plate

[0052] 38. Communication interface 301, card convex

[0053] 40. Sealing ring 50. Sealing pad

[0054] 51. Avoidance hole 60. Mounting plate

[0055] 601. Via. DETAILED DESCRIPTION

[0056] First of all, it should be noted that in the description of the present invention, the terms "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0057] Please refer to Figures 1 to 6 As shown, it shows the specific structure of a preferred embodiment of the present invention, including a valve body 10, a valve core assembly 20 and a drive assembly 30.

[0058] The valve body 10 includes a valve body 11 and a valve head 12 connected to the top of the valve body 11, the valve head 12 is provided with a main channel 121 and a plurality of branch channels 122 arranged along the periphery of the main channel 121, the valve body 11 is provided with a receiving groove 111 for installing the valve core assembly 20, the periphery of the valve body 11 is provided with an exhaust channel 112 connected to the receiving groove 111, a boss portion 123 is protruding from the bottom of the valve head 12, the ends of the main channel 121 and the ends of the branch channel 122 are both located at the bottom of the boss portion 123, the boss portion 123 extends into the receiving groove 111 and covers the receiving groove 111, and in the present embodiment, six branch channels 122 are provided, and the six branch channels 122 are evenly arranged along the periphery of the main channel 121.

[0059] The valve core assembly 20 is arranged in the accommodating groove 111, and the valve core assembly 20 includes a stator valve core 21, a valve core transmission member 22, an elastic member 23, a support ring 24, and a rotor valve core 25. The stator valve core 21 is fixed to the bottom of the boss portion 123. The stator valve core 21 is provided with a first connecting hole 211 corresponding to the main flow channel 121 and a plurality of second connecting holes 212 corresponding to the branch flow channels 122. A plurality of sealing rings are sandwiched between the stator valve core 21 and the boss portion 123. 40, a plurality of sealing rings 40 are respectively located at the outer periphery of the main flow channel 121 and the outer periphery of each branch flow channel 122, the valve core transmission member 22 comprises a connecting portion 221 exposed at the bottom of the valve body 11 and a supporting portion 222 connected to the top of the connecting portion 221, the connecting portion 221 is provided with a bearing 26 on its outer sleeve, the connecting portion 221 is rotatably arranged in the accommodating groove 111 through the bearing 26, the elastic member 23 is sleeved outside the connecting portion 221 and clamped between the bearing 26 and the supporting portion 222 The support ring 24 has a guide groove 241 that passes through from top to bottom. The support portion 222 is slidably connected in the guide groove 241. The two ends of the support ring 24 are respectively against the outer periphery of the support portion 222 and the wall surface of the accommodating groove 111. The top of the support portion 222 is concave downwardly provided with a mounting groove 223. The rotor valve core 25 is arranged in the mounting groove 223. A sealing gasket 50 is sandwiched between the bottom of the rotor valve core 25 and the mounting groove 223. The rotor valve core 25 is provided with a The rotor valve core 25 has a third connecting hole 251 and a fourth connecting hole 252 corresponding to the first connecting hole 211. The bottom of the rotor valve core 25 is upwardly recessed with a rotor flow channel groove 253 for connecting the third connecting hole 251 and the fourth connecting hole 252. The rotor valve core 25 is pressed against the bottom of the stator valve core 21 under the elastic force of the elastic member 23. The valve core transmission member 22 can drive the rotor valve core 25 to rotate together, so that the third connecting hole 251 can be selectively connected with one of the second connecting holes 212.

[0060] Specifically, see Figures 3 to 5As shown, the bottom of the boss portion 123 corresponds to the outer periphery of the end of the main flow channel 121 and the outer periphery of the end of the branch flow channel 122, and an annular groove 124 is concave upwardly. The sealing ring 40 is arranged in the annular groove 124. The accommodating groove 111 includes a first groove 113 concave downwardly from the top of the valve body 11 and a second groove 114 concave downwardly from the bottom wall of the first groove 113. The bottom of the support ring 24 abuts against the bottom wall of the first groove 113. The bearing 26 is installed in the second groove 114. The connecting portion 221 passes through the second groove 114. The bottom wall of the mounting groove 223 is exposed at the bottom of the valve body 11, the exhaust channel 112 is connected to the first groove 113, the exhaust channel 112 is higher than the top of the support ring 24, the bottom wall of the mounting groove 223 is convexly provided with a boss 224, and accordingly, the bottom of the rotor valve core 25 is concavely provided with a recess 254 upwardly, the sealing gasket 50 is provided with an avoidance hole 51 for the boss 224 to avoid, the boss 224 passes through the avoidance hole 51 and extends into the recess 254, and the valve core transmission member 22 drives the rotor valve core 25 to rotate together through the cooperation of the boss 224 and the recess 254;

[0061] Furthermore, the elastic member 23 is a spring, and a planar seal is formed between the rotor valve core 25 and the stator valve core 21 , and the force required for the seal is also provided by the elastic member 23 .

[0062] The power output end of the driving assembly 30 is connected to the connecting portion 221 , and the driving assembly 30 can drive the valve core transmission member 22 to rotate. The valve body 10 is fixed on the driving assembly 30 ;

[0063] See also Figure 2 and Figure 6 As shown, the driving assembly 30 includes a motor 31, a connecting member 32, a code disc 33, and a motor control board 34. The connecting member 32 includes a mounting portion 321 and a matching portion 322 connected to the mounting portion 321. The mounting portion 321 is fixedly connected to the transmission shaft of the motor 31, and the connecting portion 221 is detachably connected to the matching portion 322. The code disc 33 is arranged on the connecting member 32, and the motor control board 34 is provided with an optical coupling sensor 341 corresponding to the code disc 33.

[0064] Specifically, the drive assembly 30 also includes a motor mounting seat 35, the top of the motor mounting seat 35 is recessed downwardly with a third groove 351, the motor 31 is fixed to the bottom of the motor mounting seat 35, the transmission shaft of the motor 31 passes through the motor mounting seat 35 and extends into the third groove 351, the connecting member 32 is located in the third groove 351, and a fourth groove 352 connected to the third groove 351 is opened on the side of the motor mounting seat 35, the motor control board 34 is fixed in the fourth groove 352, the optical coupling sensor 341 extends into the third groove 351, and the bottom of the valve body 10 is installed on the mounting plate 60 through the mounting plate 60. The top of the motor mounting seat 35 and the bottom of the valve body 10 are upwardly provided with a step groove 101. Correspondingly, the mounting plate 60 is provided with a through hole 601. The bottom of the valve body 10 extends into the through hole 601. The top wall of the step groove 101 abuts against the top of the mounting plate 60. The outer periphery of the motor mounting seat 35 is sleeved with an outer cover 36. The outer cover 36 covers the motor 31 and the motor control board 34. The top of the outer cover 36 abuts against the bottom of the mounting plate 60. The bottom of the outer cover 36 is open and provided with a bottom plate 37 covering the open. The bottom plate 37 is provided with a communication interface 38 electrically connected to the motor control board 34.

[0065] In this embodiment, the connecting portion 221 is provided with a card slot 201, and correspondingly, the mating portion 322 is provided with a card protrusion 301. The connecting portion 221 is detachably connected to the mating portion 322 through the cooperation between the card protrusion 301 and the card slot 201, so that the driving component 30 part can be assembled separately, and the valve body 10 and the valve core component 20 part can be assembled separately. After assembly, the two modules are fixed together by screws. The modular design is conducive to the assembly of the entire rotary cutting valve.

[0066] The design emphasis of the present invention is:

[0067] The main feature is that a boss portion is convexly arranged at the bottom of the valve head, and the boss portion extends into the accommodating groove of the valve body, so that the connection between the valve head and the valve body is more precise, and a plurality of sealing rings are sandwiched between the stator valve core and the boss portion. The setting of the sealing ring improves the sealing between the stator valve core and the boss portion, and a sealing gasket is sandwiched between the bottom of the rotor valve core and the mounting groove. The setting of the sealing gasket improves the sealing between the bottom of the valve core and the mounting groove, thereby improving the sealing performance of the rotary cut valve, and the support ring has a guide groove that runs through the top and bottom, and the support part is slidably connected in the guide groove, and the two ends of the support ring respectively abut against the outer periphery of the support part and the wall of the accommodating groove, and the support ring provides guidance and support for the valve core transmission member during assembly and use, ensuring that the rotor valve core can be accurately aligned with the stator valve core, and the setting of the exhaust channel can ensure that the valve head can be smoothly installed on the valve body after the stator valve core is assembled and that the valve core transmission member can rotate smoothly in the accommodating groove.

[0068] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A rotary cutting valve with high sealing reliability, comprising a valve body, a valve core assembly and a drive assembly; characterized in that: The valve body comprises a valve body and a valve head connected to the top of the valve body, the valve head is provided with a main flow channel and a plurality of branch flow channels arranged along the periphery of the main flow channel, the valve body is provided with a receiving groove for installing a valve core assembly, the periphery of the valve body is provided with an exhaust channel connected to the receiving groove, a boss portion is convexly provided at the bottom of the valve head, the ends of the main flow channel and the ends of the branch flow channels are both located at the bottom of the boss portion, the boss portion extends into the receiving groove and covers the receiving groove, and the receiving groove comprises a first groove recessed downward from the top of the valve body and a second groove recessed downward from the bottom wall of the first groove; The valve core assembly is arranged in the accommodating groove, and the valve core assembly includes a stator valve core, a valve core transmission member, an elastic member, a support ring, and a rotor valve core; the stator valve core is fixed to the bottom of the boss portion, and the stator valve core is provided with a first communication hole corresponding to the main flow channel and a plurality of second communication holes corresponding to the branch flow channels, and a plurality of sealing rings are arranged between the stator valve core and the boss portion, and the plurality of sealing rings are respectively located at the periphery of the main flow channel and the periphery of each branch flow channel; The valve core transmission member includes a connecting portion exposed at the bottom of the valve body and a supporting portion connected to the top of the connecting portion, the connecting portion passes through the bottom wall of the second groove and is exposed at the bottom of the valve body, a bearing is provided on the outer sleeve of the connecting portion, the connecting portion is rotatably arranged in the accommodating groove through the bearing, and the bearing is installed in the second groove; The elastic member is sleeved outside the connecting portion and clamped between the bearing and the supporting portion. The supporting ring has a guide groove that passes through from top to bottom. The supporting portion is slidably connected in the guide groove. The two ends of the supporting ring are respectively against the outer periphery of the supporting portion and the wall surface of the accommodating groove. The bottom of the supporting ring is against the bottom wall of the first groove. The exhaust channel is connected to the first groove. The exhaust channel is higher than the top of the supporting ring. The top of the supporting portion is concavely provided with a mounting groove. The rotor valve core is arranged in the mounting groove. A sealing gasket is clamped between the bottom of the rotor valve core and the mounting groove. The working plane between the top of the rotor valve core and the bottom of the stator valve core is aligned with the exhaust channel. The rotor valve core is provided with a third connecting hole and a fourth connecting hole corresponding to the first connecting hole. The bottom of the rotor valve core is concavely provided with a rotor flow channel groove that connects the third connecting hole and the fourth connecting hole. The rotor valve core is against the bottom of the stator valve core under the elastic force of the elastic member. The valve core transmission member can drive the rotor valve core to rotate together, so that the third connecting hole can be selectively connected with its second connecting hole. The power output end of the driving assembly is connected to the connecting part, the driving assembly can drive the valve core transmission member to rotate, the valve body is fixed on the driving assembly, and the driving assembly includes a motor, a connecting member, a code disk, a motor control board and a motor mounting seat; The connecting member includes a mounting portion and a matching portion connected to the mounting portion, the mounting portion is fixedly connected to the transmission shaft of the motor, the connecting portion is detachably connected to the matching portion, the code disk is arranged on the connecting member, and the motor control board is provided with an optical coupling sensor corresponding to the code disk; The top of the motor mounting seat is recessed downwardly with a third groove, the motor is fixed to the bottom of the motor mounting seat, the transmission shaft of the motor passes through the motor mounting seat and extends into the third groove, the connecting piece is located in the third groove, and a fourth groove connected to the third groove is provided on the side of the motor mounting seat, the motor control board is fixed in the fourth groove, and the optical coupling sensor extends into the third groove; the bottom of the valve body is mounted on the top of the motor mounting seat through a mounting plate, and a step groove is provided upwardly at the bottom of the valve body, and correspondingly, the mounting plate is provided with a through hole, the bottom of the valve body extends into the through hole, and the top wall of the step groove abuts against the top of the mounting plate; the outer periphery of the motor mounting seat is sleeved with an outer cover, the outer cover covers the motor and the motor control board, the top of the outer cover abuts against the bottom of the mounting plate, the bottom of the outer cover is open and is provided with a bottom plate covering the opening, and a communication interface electrically connected to the motor control board is provided on the bottom plate; The valve body and the valve core assembly constitute a first module, and the drive assembly constitutes a second module. During assembly, the first module and the second module are connected via a connecting portion and a matching portion and fixed together with screws.

2. A rotary cutting valve with high sealing reliability according to claim 1, characterized in that: The bottom of the boss portion corresponds to an outer periphery of the end of the main flow channel and an outer periphery of the end of the branch flow channel, and an annular groove is concave upward, and the sealing ring is arranged in the annular groove.

3. The rotary cutting valve with high sealing reliability according to claim 1, characterized in that: A convex column is convexly provided on the bottom wall of the mounting groove, and correspondingly, a concave position is concavely provided upwardly on the bottom of the rotor valve core, and the sealing gasket is provided with an avoidance hole for the convex column to avoid, and the convex column extends into the concave position through the avoidance hole, and the valve core transmission member drives the rotor valve core to rotate together through the cooperation of the convex column and the concave position.

4. The rotary cutting valve with high sealing reliability according to claim 1, characterized in that: The connecting portion is provided with a card slot, and correspondingly, the matching portion is provided with a card protrusion, and the connecting portion is detachably connected to the matching portion through the matching of the card protrusion and the card slot.

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