Multi-channel precise switching rotary cutting valve

Abstract

The utility model provides a multi-channel precise switching rotary cutting valve. The multi-channel precise switching rotary cutting valve comprises a valve shell, a rotary driving mechanism, a rotating shaft, a rotary cutting piece, an elastic piece, a shifting rod and a microswitch. The rotating shaft rotationally penetrates through the valve shell, an output hole is formed in the other end of the rotating shaft, and a plurality of input holes are formed in the valve shell. The rotary cutting piece is slidably connected to the periphery of the rotating shaft in a sleeving mode, the rotary cutting piece covers the multiple input holes, transfer holes are formed in the rotary cutting piece, and the rotary cutting piece rotates to enable the transfer holes to be switched to be in butt joint with the different input holes. The driving lever is fixedly connected with the rotating shaft, and the microswitch is located on the rotating track of the driving lever. According to the multi-channel precise switching rotary cutting valve, before the rotary cutting piece rotates and is switched to be in butt joint with another input hole every time, the microswitch can be extruded and triggered through the rotating deflector rod, namely, the rotary driving mechanism returns to the original point at the moment, the purpose of original point calibration is achieved, errors in the multiple rotary cutting and rotating processes can be eliminated, and the accuracy of rotary cutting is improved. The transfer hole and the input hole are in accurate butt joint, and fluid is stably conveyed.

Description

Technical Field

[0001] The utility model relates to the field of valves, in particular to a multi-channel precise switching rotary cutting valve. Background Art

[0002] A rotary valve is a valve that switches between different input ports and corresponding output ports through rotation. Existing rotary valves mostly use a stepper motor to drive the valve for multi-channel switching. Because stepper motors lack signal feedback like servo motors, they are prone to stalling and losing steps during rotation. Without a home calibration signal, the motor can experience inaccurate positioning, affecting the connection between the input and output ports and hindering the proper operation of the rotary valve.

[0003] Therefore, it is necessary to provide a multi-channel precise switching rotary cutting valve to solve the above technical problems. Utility Model Content

[0004] The utility model provides a multi-channel precise switching rotary cutting valve to solve the problem of inaccurate movement of the motor of the rotary cutting valve in the prior art, thereby affecting the docking of the input hole and the output hole and affecting the normal use of the rotary cutting valve.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a multi-channel precise switching rotary cutting valve, which includes: a valve housing, a rotary drive mechanism, a rotating shaft, a rotary cutting piece, an elastic member, a lever, and a micro switch;

[0006] The rotating shaft rotates and penetrates the valve housing, one end of the rotating shaft is connected to the output end of the rotary drive mechanism, the other end of the rotating shaft is provided with an output hole communicating with the inner and outer spaces of the valve housing, and the valve housing is provided with a plurality of input holes communicating with the inner and outer spaces of the valve housing;

[0007] The rotary section is located in the valve housing, the rotary section is slidably sleeved on the outer periphery of the rotating shaft, and the rotary section is in transmission cooperation with the rotating shaft. The rotary section covers a plurality of the input holes, and a transfer hole is provided on the rotary section. When the rotary section rotates, the transfer hole switches to dock with different input holes. A limiting convex portion is provided on the outer periphery of the rotating shaft, and the elastic member is located between the limiting convex portion and a side of the rotary section away from the input hole.

[0008] The micro switch is fixedly arranged in the valve housing, the shift rod is fixedly connected to the rotating shaft, and the micro switch is located on the rotation track of the shift rod.

[0009] In the present invention, the shift rod includes an annular member and a rod body arranged on the circumferential side of the annular member, the annular member is sleeved on the rotating shaft, a first positioning groove is provided on the inner side of the annular member near the rod body, both ends of the first positioning groove penetrate the annular member along the axial direction of the annular member, a second positioning groove is provided on the inner side of the annular member away from the rod body, both ends of the second positioning groove penetrate the annular member along the radial direction of the annular member, and a first positioning block for positioning and cooperating with the first positioning groove and a second positioning block for positioning and cooperating with the second positioning groove are provided on the circumference of the rotating shaft.

[0010] In the present invention, the multi-channel precise switching rotary cutting valve also includes a water pass plate, which is arranged between the rotary cutting piece and the inner wall of the valve shell where the input hole is located. The water pass plate is provided with first through holes corresponding to the multiple input holes one by one, and the rotary cutting piece and the water pass plate are made of ceramic material.

[0011] Wherein, a sealing gasket is provided between the water-passing plate and the inner wall of the valve housing where the input holes are located, and the sealing gasket is provided with second through holes corresponding to the plurality of input holes one by one.

[0012] Furthermore, the multi-channel precise switching rotary cutting valve also includes a Hall switch, a magnet bracket, and a magnet. The Hall switch is arranged between the sealing gasket and the inner wall of the valve housing where the input hole is located. Multiple magnets are embedded in the magnet bracket. Multiple magnets are distributed in a ring around the axial center of the magnet bracket. The magnet bracket is located between the rotary cutting piece and the water pass piece. The water pass piece is provided with an inner hole, and the magnet bracket is located in the inner hole.

[0013] Optionally, a connecting post is provided on the magnet bracket, and a connecting hole is provided on the spin slice for positioning and connecting with the connecting post.

[0014] Optionally, a clamping rod is provided on the magnet bracket, and a clamping hole for plugging with the clamping rod is provided on the spin slice.

[0015] In the present invention, the transfer hole and the output hole are connected via a connecting pipe.

[0016] In the utility model, a fixing groove is provided on the inner side of the valve housing, and an output adapter hole connecting the inner and outer spaces of the valve housing is provided in the fixing groove. The end of the rotating shaft where the output hole is located is rotatably connected in the fixing groove, and the output hole is docked with the output adapter hole. A sealing ring is sleeved on the portion of the rotating shaft located in the fixing groove.

[0017] In the present invention, the valve housing includes a main housing and a valve cover, one end of the main housing is an opening, the valve cover is closed and arranged on the opening, the output hole and the plurality of input holes are located on the end surface of the valve cover, and the axis of the input hole is parallel to the axis of the rotating shaft;

[0018] The rotary drive mechanism is located at one end of the main housing away from the opening. The rotary drive mechanism is connected to the main housing via a fixed bracket. The shift rod and the micro switch are arranged between the main housing and the fixed bracket.

[0019] In the present invention, the valve housing includes a main housing and a valve cover, one end of the main housing is an opening, the valve cover is closed and arranged on the opening, a plurality of input holes are arranged on the peripheral side of the valve cover, and the axes of the input holes are perpendicular to the axis of the rotating shaft;

[0020] The valve cover is located between the rotary drive mechanism and the main housing. The rotary drive mechanism is connected to the valve cover via a fixed bracket. The shift rod and the micro switch are arranged between the valve cover and the fixed bracket.

[0021] Compared to existing technologies, this multi-channel precision-switching rotary cutting valve offers the following advantages: By incorporating a microswitch, the rotary section can be triggered by rotating a lever before each rotation to connect to another input port. This triggers the microswitch, signaling the rotary drive mechanism to return to its origin. This serves as an origin calibration. After calibration, the rotary drive mechanism can precisely drive the rotary section to the desired position, eliminating errors during multiple rotary rotations and ensuring precise connection between the transfer port and the input port, ensuring stable fluid delivery. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. The drawings described below are only drawings corresponding to some embodiments of the present invention.

[0023] Figure 1 This is a structural diagram of the first embodiment of the multi-channel precise switching rotary cutting valve of the present invention.

[0024] Figure 2 Schematic diagram of the exploded structure of the multi-channel precise switching rotary cutting valve of the first embodiment.

[0025] Figure 3 This is a schematic diagram of the partial structure of the micro switch of the multi-channel precise switching rotary cutting valve of the first embodiment.

[0026] Figure 4Schematic diagram of the partial exploded structure of the lever and the rotating shaft of the multi-channel precise switching rotary cut valve of the first embodiment.

[0027] Figure 5 2. It is a cross-sectional view of the multi-channel precise switching rotary cut valve of the first embodiment.

[0028] Figure 6 This is a structural diagram of the second embodiment of the multi-channel precise switching rotary cutting valve of the utility model.

[0029] Figure 7 Schematic diagram of the exploded structure of the multi-channel precise switching rotary cutting valve of the second embodiment.

[0030] Figure 8 This is a schematic diagram of the partial structure of the micro switch of the multi-channel precise switching rotary cutting valve of the second embodiment.

[0031] Figure 9 A cross-sectional view of a multi-channel precise switching rotary cut valve according to the second embodiment. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0033] Directional terms mentioned in this invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "side", "top" and "bottom", are only used with reference to the directions of the drawings. The directional terms used are used to illustrate and understand the invention, and are not intended to limit the invention.

[0034] The terms "first" and "second" in the present invention are used for descriptive purposes only and should not be understood as indicating or implying relative importance, nor as limiting the order of precedence.

[0035] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, connection can be a detachable connection or a connection of an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be internal communication between two components or an interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0036] The rotary cutting valve in the prior art uses a stepper motor as a drive. Since the stepper motor does not have a signal feedback device like the servo motor, the motor is prone to getting stuck and losing steps during the rotation process. At this time, since there is no return to origin calibration signal, the motor will have inaccurate movement, thereby affecting the docking of the input hole and the output hole, affecting the normal use of the rotary cutting valve.

[0037] Furthermore, conventional rotary valves are equipped with a common volume chamber, connecting the input and output ends. All fluids pass through and are stored in the common volume chamber. However, over time, some fluids can deteriorate. For example, when a rotary valve is used in an automatic cooking machine, various seasonings can easily mix and remain in the volume chamber. Over time, this can breed bacteria and cause mold, which can affect human health.

[0038] The following is a first embodiment of a multi-channel precise switching rotary cutting valve provided by the present invention that can solve the above technical problems.

[0039] Please refer to Figure 1-Figure 5 In the figures, units with similar structures are represented by the same reference numerals.

[0040] This embodiment provides a multi-channel precise switching rotary cutting valve, which includes: a valve housing 11, a rotary drive mechanism 12, a rotating shaft 13, a rotary cutting piece 15, an elastic member 17, a lever 1B, and a micro switch 1A.

[0041] A rotating shaft 13 rotates and extends through the valve housing 11. One end of the rotating shaft 13 is connected to the output end of the rotary drive mechanism 12. The other end of the rotating shaft 13 is provided with an output hole 131 that connects the interior and exterior spaces of the valve housing 11. The valve housing 11 is provided with multiple input holes 141 that connect the interior and exterior spaces of the valve housing 11. The rotary drive mechanism 12 can be a motor that drives the rotating shaft 13 to rotate.

[0042] The rotary section 15 is located in the valve housing 11. The rotary section 15 is slidably sleeved on the outer periphery of the rotating shaft 13, and the rotary section 15 is in transmission cooperation with the rotating shaft 13. The rotary section 15 rotates synchronously with the rotating shaft 13. The rotary section 15 covers multiple input holes 141. A transfer hole 151 is provided on the rotary section 15. When the rotary section 15 rotates, the transfer hole 151 switches to dock with different input holes 141, thereby switching different input holes 141 to connect with the output hole 131.

[0043] A stopper protrusion 132 is provided on the outer circumference of the rotating shaft 13. An elastic member 17 is positioned between the stopper protrusion 132 and the side of the rotating section 15 facing away from the input hole 141. This elastic member 17 compresses the rotating section 15, ensuring that it closes the remaining input holes 141 not connected to the transfer hole 151. In this embodiment, the elastic member 17 is a spring. The rotating section 15 comprises a plate and a column, and the elastic member 17 is positioned around the outer circumference of the column.

[0044] Please refer to Figure 3 The micro switch 1A is fixedly mounted in the valve housing 11, and the lever 1B is fixedly connected to the rotary shaft 13. The micro switch 1A is located on the rotation trajectory of the lever 1B. Before the rotary section 15 switches to another input hole 141 each time, the rotary shaft 13 rotates to drive the lever 1B to rotate. The lever 1B squeezes and triggers the micro switch 1A. At this time, the host control board receives a signal indicating that the rotary drive mechanism 12 has returned to the origin, which has the effect of origin calibration. After calibration, the rotary drive mechanism 12 can accurately drive the rotary section 15 to rotate to the required position, eliminating errors during multiple rotary rotations, so that the transfer hole 151 and the input hole 141 are accurately docked, and the fluid is stably transported.

[0045] Please refer to Figure 4 In this embodiment, the shift lever 1B includes a ring member 1B1 and a rod body 1B2 arranged on the circumference of the ring member 1B1. The ring member 1B1 is sleeved on the rotating shaft 13. A first positioning groove 1B3 is provided on the inner side of the ring member 1B1 near the rod body 1B2. Both ends of the first positioning groove 1B3 penetrate the ring member 1B1 along the axial direction of the ring member 1B1. A second positioning groove 1B4 is provided on the inner side of the ring member 1B1 away from the rod body 1B2. Both ends of the second positioning groove 1B4 penetrate the ring member 1B1 along the radial direction of the ring member 1B1. A first positioning block 133 for positioning and cooperating with the first positioning groove 1B3 and a second positioning block 134 for positioning and cooperating with the second positioning groove 1B4 are provided on the circumference of the rotating shaft 13. The first positioning groove 1B3 that penetrates the ring part 1B1 along the axial direction of the ring part 1B1 is set at a position close to the rod body 1B2, while the second positioning groove 1B4 only penetrates part of the ring part 1B1 along the radial direction of the ring part 1B1. The overall strength of the ring part 1B1 is good, and the connection stability with the rotating shaft 13 is high.

[0046] Please refer to Figure 2 The multi-channel precise switching rotary cutting valve of this embodiment also includes a water pass plate 18, which is arranged between the rotary cutting piece 15 and the inner wall of the valve shell 11 where the input hole 141 is located. The water pass plate 18 is provided with first through holes 181 corresponding to the multiple input holes 141 one by one. The rotary cutting piece 15 and the water pass plate 18 are made of ceramic material, preferably a high-hardness and high-wear-resistant ceramic material, which can well ensure the sealing of the rotary cutting part. The rotary switching life of the rotary cutting piece 15 and the water pass plate 18 is long and will not rust.

[0047] Furthermore, a sealing gasket 19 is provided between the water-passing plate 18 and the inner wall of the valve housing 11 where the input holes 141 are located. The sealing gasket 19 is provided with second through holes 191 corresponding to the plurality of input holes 141 on a one-to-one basis.

[0048] Preferably, convex rings are provided on both sides of the sealing gasket 19 along the second through hole 191 , and the convex rings are positioned and fitted into the input hole 141 or into the first through hole 181 .

[0049] Please refer to Figure 2 The multi-channel precision switching rotary cutting valve of this embodiment also includes a Hall switch 1E, a magnet holder 1C, and a magnet 1D. The Hall switch 1E is arranged between the sealing gasket 19 and the inner wall of the valve housing 11 where the input hole 141 is located. Multiple magnets 1D are embedded in the mounting hole 1C1 of the magnet holder 1C. The multiple magnets 1D are distributed in a ring around the axial center of the magnet holder 1C. The magnet holder 1C is located between the rotary cutting piece 15 and the water passing piece 18. The water passing piece 15 is provided with an inner hole, and the magnet holder 1C is located in the inner hole.

[0050] The magnet holder 1C is equipped with a latching rod 1C2, and the spindle 15 is provided with a latching hole 152 that plugs into the latching rod 1C2. The latching rod 1C2 and the latching hole 152 cooperate to form a stable connection between the magnet holder 1C and the spindle 15. The magnet holder 1C rotates with the spindle 15, so that as the spindle 15 rotates, different magnets 1D are sensed one by one by the Hall switch 1E. This provides feedback on which input hole 141 the transfer hole 151 is connected to.

[0051] Please refer to Figure 2 and Figure 5 The multi-channel precision-switching rotary cutting valve in this embodiment also includes a connecting tube 16, which connects the transfer hole 151 and the output hole 131. The other end of the transfer hole 151 is connected to the input hole 141. The fluid can be more fully discharged through the connecting tube 16, reducing residual fluid and reducing bacterial growth and mold.

[0052] Among them, the output hole 131 includes an axial hole section 1311 parallel to the axis of the rotating shaft 13, and a radial hole section 1312 perpendicular to the axis of the rotating shaft 13. The connecting pipe 16 is a hose, and the connecting pipe 16 connects the axial hole section 1311 and the transfer hole 151 by bending.

[0053] It should be noted that in this embodiment, the output hole 131, the input hole 141 and the transfer hole 151 are all extended with a tube body, which is convenient for connecting with the corresponding connecting pipe, input pipe, or output pipe. The radial hole section 1312 is located in the tube body of the output hole 131.

[0054] Please refer to Figure 1-Figure 3In this embodiment, the valve housing 11 includes a main housing and a valve cover 14 (the reference numeral 11 also refers to the main housing). One end of the main housing is an opening, and the valve cover 14 is sealed and arranged on the opening. The valve cover 14 is arranged on an end of the valve housing 11 away from the rotary drive mechanism 12. The output hole 131 and multiple input holes 141 are located on the end surface of the valve cover 14. The multiple input holes 141 are distributed in an annular manner around the output hole 131, and the axis of the input hole 141 is parallel to the axis of the rotating shaft 13.

[0055] The rotary drive mechanism 12 is located at one end of the main housing away from the opening. The rotary drive mechanism 12 is connected to the main housing through a fixed bracket 1F. The shift lever 1B and the micro switch 1A are arranged between the main housing and the fixed bracket 1F.

[0056] The multi-channel rotary cutting valve with independent water outlet pipes in this embodiment operates as follows: the rotary drive mechanism 12 drives the rotary shaft 13, which in turn drives the rotary section 15, causing the transfer hole 151 to switch between different input holes 141, thereby switching between different input holes 141 and output holes 131. Fluid is transported between the transfer hole 151 and the output hole 131 via the connecting pipe 16. The Hall switch 1E counts and provides feedback on the induction of the magnet 1D, indicating which input hole 141 the transfer hole 151 is switching to, thus achieving multi-channel switching.

[0057] Before each peeling, the rotary drive mechanism 12 drives the rotating shaft 13 to rotate and drives the lever 1B to rotate until it contacts the micro switch 1A to calibrate the initial position. After calibration, the peeling section 15 rotates to the required position.

[0058] The following is a second embodiment of a multi-channel precision switching rotary cutting valve provided by this utility model, which solves the above technical problems. The main differences between the second embodiment and the first embodiment lie in the different placement of the input and output ports, as well as the structure of the magnet bracket. The remaining structural principles are essentially the same, and the common parts will not be repeated in this embodiment.

[0059] Please refer to Figure 6-Figure 9 This embodiment provides a multi-channel precise switching rotary cutting valve, which includes: a valve housing 11, a rotary drive mechanism 12, a rotary shaft 13, a rotary cutting piece 15, an elastic member 17, a lever 1B, and a micro switch 1A.

[0060] A rotating shaft 13 rotates and extends through the valve housing 11. One end of the rotating shaft 13 is connected to the output end of the rotary drive mechanism 12. The other end of the rotating shaft 13 is provided with an output hole 131 that connects the interior and exterior spaces of the valve housing 11. The valve housing 11 is provided with multiple input holes 141 that connect the interior and exterior spaces of the valve housing 11. The rotary drive mechanism 12 can be a motor that drives the rotating shaft 13 to rotate.

[0061] The rotary section 15 is located in the valve housing 11. The rotary section 15 is slidably sleeved on the outer periphery of the rotating shaft 13, and the rotary section 15 is in transmission cooperation with the rotating shaft 13. The rotary section 15 rotates synchronously with the rotating shaft 13. The rotary section 15 covers multiple input holes 141. A transfer hole 151 is provided on the rotary section 15. When the rotary section 15 rotates, the transfer hole 151 switches to dock with different input holes 141, thereby switching different input holes 141 to connect with the output hole 131.

[0062] A stopper protrusion 132 is provided on the outer circumference of the rotating shaft 13. An elastic member 17 is positioned between the stopper protrusion 132 and the side of the rotating section 15 facing away from the input hole 141. This elastic member 17 compresses the rotating section 15, ensuring that it closes the remaining input holes 141 not connected to the transfer hole 151. In this embodiment, the elastic member 17 is a spring. The rotating section 15 comprises a plate and a column, and the elastic member 17 is positioned around the outer circumference of the column.

[0063] Microswitch 1A is fixedly mounted within valve housing 11, and lever 1B is fixedly connected to rotary shaft 13. Microswitch 1A is located along the rotational trajectory of lever 1B. Before each rotation of rotary section 15 switches to another input port 141 for docking, rotary shaft 13 rotates, driving lever 1B. Lever 1B squeezes and triggers microswitch 1A. At this point, the host control panel receives a signal indicating that rotary drive mechanism 12 has returned to its origin, thus calibrating the origin. After calibration, rotary drive mechanism 12 can accurately drive rotary section 15 to the desired position, eliminating errors during multiple rotary rotations and ensuring precise docking of transfer port 151 with input port 141, ensuring stable fluid delivery.

[0064] In this embodiment, the shift lever 1B includes a ring member 1B1 and a rod body 1B2 arranged on the circumferential side of the ring member 1B1. The ring member 1B1 is sleeved on the rotating shaft 13. A first positioning groove 1B3 is provided on the inner side of the ring member 1B1 near the rod body 1B2. Both ends of the first positioning groove 1B3 penetrate the ring member 1B1 along the axial direction of the ring member 1B1. A second positioning groove 1B4 is provided on the inner side of the ring member 1B1 away from the rod body 1B2. Both ends of the second positioning groove 1B4 penetrate the ring member 1B1 along the radial direction of the ring member 1B1. A first positioning block 133 for positioning and cooperating with the first positioning groove 1B3 and a second positioning block 134 for positioning and cooperating with the second positioning groove 1B4 are provided on the circumference of the rotating shaft 13. The first positioning groove 1B3 that penetrates the ring part 1B1 along the axial direction of the ring part 1B1 is set at a position close to the rod body 1B2, while the second positioning groove 1B4 only penetrates part of the ring part 1B1 along the radial direction of the ring part 1B1. The overall strength of the ring part 1B1 is good, and the connection stability with the rotating shaft 13 is high.

[0065] Please refer to Figure 7The multi-channel precision switching rotary cutting valve in this embodiment also includes a Hall switch 2E, a magnet bracket 2C, and a magnet 2D. The Hall switch 2E is arranged between the sealing gasket 19 and the inner wall of the valve housing 11 where the input hole 241 is located. Multiple magnets 2D are embedded in the mounting hole 2C1 of the magnet bracket 2C. The multiple magnets 2D are distributed in a ring around the axial center of the magnet bracket 2C. The magnet bracket 2C is located between the rotary cutting piece 15 and the water passing piece 18. The water passing piece 18 is provided with an inner hole, and the magnet bracket 2C is located in the inner hole.

[0066] In this embodiment, the magnet holder 2C is provided with a connecting post 2C2, and the spindle 15 is provided with a connecting hole that is positioned and connected to the connecting post 2C2. The magnet holder 2C rotates with the spindle 15, so that as the spindle 15 rotates, different magnets 2D are sensed one by one by the Hall switch 2E.

[0067] The multi-channel precise switching rotary cutting valve in this embodiment further includes a connecting pipe 16 , which connects the transfer hole 151 and the output hole 131 , and the other end of the transfer hole 151 is connected to the input hole 241 .

[0068] Please refer to Figure 9 In this embodiment, a fixing groove 112 is provided on the inner side of the valve housing 11. An output adapter hole 111 is provided within the fixing groove 112, connecting the inner and outer spaces of the valve housing 11. One end of the rotating shaft 13, where the output hole 131 is located, is rotatably connected to the fixing groove 112. The output hole 131 and the output adapter hole 111 are connected. A sealing ring 21 is sleeved on the portion of the rotating shaft 13 located within the fixing groove 112, achieving a dynamic seal between the rotating shaft 13 and the inner wall of the fixing groove 112. With the output hole 131 connected to the output adapter hole 111, the external output pipe is connected to the output adapter hole 111 and does not rotate with the rotating shaft 13. This effectively prevents the external output pipe from twisting and becoming entangled with the rotating shaft 13, thereby preventing valve malfunction.

[0069] It is understandable that in the first embodiment, a fixing groove 112 and an output adapter hole 111 can also be provided on the valve cover to similarly realize a dynamic seal between the rotating shaft 13 and the inner wall of the fixing groove 112, and to prevent the external output pipe from twisting and entangled with the rotating shaft 13, thereby causing the valve to fail.

[0070] In this embodiment, the valve housing 11 includes a main shell and a valve cover 24. One end of the main shell is an opening, and the valve cover 24 is closed and arranged on the opening. A plurality of input holes 241 are arranged on the peripheral side of the valve cover 24, and the axis of the input hole 241 is perpendicular to the axis of the rotating shaft 13.

[0071] The valve cover 24 is located between the rotary drive mechanism 12 and the main housing. The rotary drive mechanism 12 is connected to the valve cover 24 via a fixed bracket 2F. The shift lever 1B and the micro switch 1A are arranged between the valve cover 24 and the fixed bracket 2F.

[0072] The working principle of the switching channel of the multi-channel rotary cut valve with independent water outlet pipes in this embodiment is consistent with that of the first embodiment, and will not be described in detail in this embodiment.

[0073] This multi-channel precision-switching rotary cutting valve utilizes a microswitch. Before each rotation of the rotary cutting section to connect to another input port, a rotating lever triggers the microswitch. This triggers the host control board to receive a signal that the rotary drive mechanism has returned to its origin, effectively calibrating the origin. After calibration, the rotary drive mechanism accurately drives the rotary cutting section to the desired position, eliminating errors during multiple rotary cutting rotations. This ensures precise alignment between the transfer port and the input port, ensuring stable fluid delivery.

[0074] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined by the claims.

Claims

1. A multi-channel precise switching rotary cutting valve, characterized in that: include: Valve housing, rotary drive mechanism, rotary shaft, rotary slice, elastic member, lever, and micro switch; The rotating shaft rotates and penetrates the valve housing, one end of the rotating shaft is connected to the output end of the rotary drive mechanism, the other end of the rotating shaft is provided with an output hole communicating with the inner and outer spaces of the valve housing, and the valve housing is provided with a plurality of input holes communicating with the inner and outer spaces of the valve housing; The rotary section is located in the valve housing, the rotary section is slidably sleeved on the outer periphery of the rotating shaft, and the rotary section is in transmission cooperation with the rotating shaft. The rotary section covers a plurality of the input holes, and a transfer hole is provided on the rotary section. When the rotary section rotates, the transfer hole switches to dock with different input holes. A limiting convex portion is provided on the outer periphery of the rotating shaft, and the elastic member is located between the limiting convex portion and a side of the rotary section away from the input hole. The micro switch is fixedly arranged in the valve housing, the shift rod is fixedly connected to the rotating shaft, and the micro switch is located on the rotation track of the shift rod.

2. The multi-channel precise switching rotary cutting valve according to claim 1, characterized in that: The shift lever includes an annular member and a rod body arranged on the circumferential side of the annular member, the annular member is sleeved on the rotating shaft, a first positioning groove is provided on the inner side of the annular member near the rod body, both ends of the first positioning groove pass through the annular member along the axial direction of the annular member, a second positioning groove is provided on the inner side of the annular member away from the rod body, both ends of the second positioning groove pass through the annular member along the radial direction of the annular member, and a first positioning block for positioning and cooperating with the first positioning groove and a second positioning block for positioning and cooperating with the second positioning groove are provided on the circumference of the rotating shaft.

3. The multi-channel precise switching rotary cutting valve according to claim 1, characterized in that: The multi-channel precise switching rotary cutting valve also includes a water pass plate, which is arranged between the rotary cutting piece and the inner wall of the valve shell where the input hole is located. The water pass plate is provided with first through holes corresponding to the multiple input holes one by one. The rotary cutting piece and the water pass plate are made of ceramic material.

4. The multi-channel precise switching rotary cutting valve according to claim 3, characterized in that: A sealing gasket is provided between the water-passing plate and the inner wall of the valve housing where the input holes are located. The sealing gasket is provided with second through holes corresponding to the plurality of input holes one by one.

5. The multi-channel precise switching rotary cutting valve according to claim 4, characterized in that: The multi-channel precise switching rotary cutting valve also includes a Hall switch, a magnet bracket, and a magnet. The Hall switch is arranged between the sealing gasket and the inner wall of the valve housing where the input hole is located. Multiple magnets are embedded in the magnet bracket. Multiple magnets are distributed in a ring around the axial center of the magnet bracket. The magnet bracket is located between the rotary cutting piece and the water pass piece. The water pass piece is provided with an inner hole, and the magnet bracket is located in the inner hole.

6. The multi-channel precise switching rotary cutting valve according to claim 5, characterized in that: The magnet bracket is provided with a connecting column, and the rotary slice is provided with a connecting hole positioned and connected to the connecting column, or the magnet bracket is provided with a clamping rod, and the rotary slice is provided with a clamping hole plugged with the clamping rod.

7. The multi-channel precise switching rotary cutting valve according to claim 5, characterized in that: The transfer hole and the output hole are connected via a connecting pipe.

8. The multi-channel precise switching rotary cutting valve according to claim 1, characterized in that: A fixing groove is provided on the inner side of the valve housing, and an output adapter hole communicating with the inner and outer spaces of the valve housing is provided in the fixing groove. One end of the rotating shaft where the output hole is located is rotatably connected in the fixing groove, and the output hole is docked with the output adapter hole. A sealing ring is sleeved on the portion of the rotating shaft located in the fixing groove.

9. The multi-channel precise switching rotary cutting valve according to claim 1, characterized in that: The valve housing includes a main housing and a valve cover, one end of the main housing is an opening, the valve cover is sealed on the opening, the output hole and the plurality of input holes are located on an end surface of the valve cover, and the axis of the input hole is parallel to the axis of the rotating shaft; The rotary drive mechanism is located at one end of the main housing away from the opening. The rotary drive mechanism is connected to the main housing via a fixed bracket. The shift rod and the micro switch are arranged between the main housing and the fixed bracket.

10. The multi-channel precise switching rotary cutting valve according to claim 1, characterized in that: The valve housing includes a main housing and a valve cover, one end of the main housing is open, the valve cover is sealed on the opening, a plurality of input holes are provided on the circumferential side of the valve cover, and the axes of the input holes are perpendicular to the axis of the rotating shaft; The valve cover is located between the rotary drive mechanism and the main housing. The rotary drive mechanism is connected to the valve cover via a fixed bracket. The shift rod and the micro switch are arranged between the valve cover and the fixed bracket.

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