Multi-channel rotary cut valve and corresponding rotary cut control method

Abstract

The application provides a multi-channel rotary cutting valve and a corresponding rotary cutting control method. The multi-channel rotary cutting valve comprises a valve shell, a rotary driving mechanism, a rotary shaft, a rotary cutting piece, an elastic piece, a lever and a micro switch. The rotary shaft penetrates the valve shell and is provided with an output hole at the other end. The valve shell is provided with a plurality of main input holes. The rotary cutting piece is slidably sleeved on the outer periphery of the rotary shaft and covers the plurality of main input holes. The rotary cutting piece is provided with a transfer hole. The rotary cutting piece rotates to switch the transfer hole to be connected with different main input holes. The lever is fixedly connected with the rotary shaft, and the micro switch is located on the rotation track of the lever. Before the rotary cutting piece of the multi-channel rotary cutting valve is switched to another main input hole for connection through rotation, the rotating lever can press and trigger the micro switch, so that the rotary driving mechanism returns to the original position, the original position calibration is achieved, the error in the process of multiple rotary cutting rotations is eliminated, the transfer hole and the main input hole are accurately connected, and the fluid is stably delivered.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of valves, in particular to a multi-channel rotary cutting valve and a corresponding rotary cutting control method. BACKGROUND

[0002] The rotary cutting valve is a valve that switches different input ends and corresponding output ends by rotation. Most of the rotary cutting valves in the prior art use a stepper motor to drive the rotary cutting valve for multi-channel switching. Since the stepper motor does not have a signal feedback device like a servo motor, the motor is prone to jamming and step loss during rotation. At this time, since there is no home calibration signal, the motor has the problem of inaccurate walking, which affects the docking of the main input hole and the output hole and the normal use of the rotary cutting valve.

[0003] Therefore, it is necessary to provide a multi-channel rotary cutting valve and a corresponding rotary cutting control method to solve the above technical problems. SUMMARY

[0004] The present application provides a multi-channel rotary cutting valve and a corresponding rotary cutting control method to solve the problem that the motor of the rotary cutting valve in the prior art has inaccurate walking, which affects the docking of the main input hole and the output hole and the normal use of the rotary cutting valve.

[0005] To solve the above technical problems, the technical scheme of the present application is as follows: a multi-channel rotary cutting valve, comprising: a valve housing, a rotary drive mechanism, a rotary shaft, a rotary cutting piece, an elastic member, a lever, and a micro switch;

[0006] The rotary shaft penetrates the valve housing and is connected to the output end of the rotary drive mechanism at one end. The other end of the rotary shaft is provided with an output hole that communicates the inner and outer spaces of the valve housing. The valve housing is provided with a plurality of main input holes that communicate the inner and outer spaces of the valve housing.

[0007] The rotary cutting piece is located in the valve housing and is slidably connected to the outer periphery of the rotary shaft. The rotary cutting piece is in transmission cooperation with the rotary shaft. The rotary cutting piece covers a plurality of main input holes. The rotary cutting piece is provided with a transfer hole. The rotary cutting piece is rotated to switch the transfer hole to dock with different main input holes. The outer periphery of the rotary shaft is provided with a limiting protrusion. The elastic member is located between the side of the rotary cutting piece away from the input port and the limiting protrusion.

[0008] The micro switch is fixedly arranged in the valve housing. The inner wall of the valve housing is provided with a fixed column. The axial direction of the fixed column is consistent with the axial direction of the rotary shaft. The micro switch is provided with a fixed hole for plugging with the fixed column. The lever is fixedly connected with the rotary shaft. The micro switch is located on the rotation track of the lever.

[0009] In the application, the lever comprises a ring and a rod arranged on the side of the ring, the ring is sleeved on the rotating shaft, a first positioning groove is arranged on the inner side of the ring close to the rod, the two ends of the first positioning groove penetrate the ring along the axial direction of the ring, a second positioning groove is arranged on the inner side of the ring away from the rod, the two ends of the second positioning groove penetrate the ring along the radial direction of the ring, and the circumference of the rotating shaft is provided with a first positioning block for positioning cooperation with the first positioning groove and a second positioning block for positioning cooperation with the second positioning groove.

[0010] In the application, the multi-channel rotary cutting valve further comprises a water passing piece, the water passing piece is arranged between the rotary cutting piece and the inner wall of the valve shell where the main input hole is located, a first through hole corresponding to each of the main input holes is arranged on the water passing piece, and the rotary cutting piece and the water passing piece are made of ceramic material.

[0011] The water passing piece and the inner wall of the valve shell where the main input hole is located are provided with a sealing gasket, and a second through hole corresponding to each of the main input holes is arranged on the sealing gasket.

[0012] Further, the multi-channel rotary cutting valve further comprises a Hall switch, a magnet support and magnets, the Hall switch is arranged between the sealing gasket and the inner wall of the valve shell where the main input hole is located, the magnets are inlaid in the magnet support, the magnets are annularly distributed on the side of the axial center of the magnet support, the magnet support is located between the rotary cutting piece and the water passing piece, the water passing piece is provided with an inner hole, and the magnet support is located in the inner hole.

[0013] Optionally, a connecting column is arranged on the magnet support, and a connecting hole for positioning and connecting the connecting column is arranged on the rotary cutting piece.

[0014] Optionally, a clamping rod is arranged on the magnet support, and a clamping hole for inserting the clamping rod is arranged on the rotary cutting piece.

[0015] In the application, the connecting pipe connects between one end of the transfer hole and the output hole;

[0016] One side of the rotating shaft protrudes and is provided with a convex pipe, and the output hole extends into the convex pipe;

[0017] The connecting pipe connects the convex pipe and the transfer hole through bending, or the convex pipe is arranged through bending, and the connecting pipe is in the form of a straight strip to connect the convex pipe and the transfer hole.

[0018] In the application, the multi-channel rotary valve further comprises at least one secondary input hole communicating the inner and outer spaces of the valve shell, the rotary slice covers the secondary input hole, the water passing slice is provided with a third through hole corresponding to the secondary input hole, and the sealing gasket is provided with a fourth through hole corresponding to the secondary input hole;

[0019] The transfer hole on the rotary slice is provided with a radial section long strip-shaped connecting hole on one side close to the water passing slice, the radial extension direction of the connecting hole is consistent with the radial direction of the rotary slice, the radial sections of the first through hole and the second through hole are long strip-shaped, and the radial extension directions of the first through hole and the second through hole are consistent with the circumferential direction of the rotary slice, and the third through hole and part of the first through hole are located on the same radial line of the water passing slice;

[0020] The rotary slice comprises a single input position and a multi-input position on the rotation track, the connecting hole is connected with the first through hole when the rotary slice is located at the single input position, and the connecting hole is connected with the first through hole and the third through hole at the same time when the rotary slice is located at the multi-input position.

[0021] In the application, the valve shell comprises a main shell, a valve cover and a fixing support, one end of the main shell is an opening, the valve cover is sealingly arranged on the opening, the output hole and a plurality of main input holes are located on the end face of the valve cover, and the axis of the main input hole is parallel to the axis of the rotary shaft;

[0022] The rotary drive mechanism is located at the end of the main shell away from the opening, the rotary drive mechanism is connected with the main shell through the fixing support, and the shift rod and the micro switch are arranged between the main shell and the fixing support.

[0023] In the application, the valve shell comprises a main shell, a valve cover and a fixing support, one end of the main shell is an opening, the valve cover is sealingly arranged on the opening, a plurality of main input holes are arranged on the circumferential side face of the valve cover, and the axis of the main input hole is perpendicular to the axis of the rotary shaft;

[0024] The valve cover is located between the rotary drive mechanism and the main shell, the rotary drive mechanism is connected with the valve cover through the fixing support, and the shift rod and the micro switch are arranged between the valve cover and the fixing support;

[0025] The inner side of the valve shell is provided with a fixing groove, the fixing groove is provided with an output transfer hole communicating the inner and outer spaces of the valve shell, one end of the output hole of the rotary shaft is rotationally connected in the fixing groove, the output hole is connected with the output transfer hole, and the part of the rotary shaft located in the fixing groove is sleeved with a sealing ring.

[0026] The application also includes a rotary cutting control method for controlling the operation of the multi-channel rotary cutting valve using the host control board, which comprises the following steps:

[0027] Step S11: Each of the plurality of main input holes has a corresponding number, and when the host control board controls the rotary drive mechanism to drive the transfer hole to be connected with the main input hole with the set number, it will store the set number as the current number information;

[0028] Step S12: The host control board receives the target number information of the main input hole that needs to be connected input by the user, and compares the target number information with the current number information;

[0029] Step S13: If the target number information is consistent with the current number information, a rotary cutting completion signal is output;

[0030] If the target number information is not consistent with the current number information, the host control board controls the rotary drive mechanism to drive the rotary shaft to rotate, and drives the lever to rotate to contact the micro switch, so that the micro switch sends a homing signal of the rotary drive mechanism returning to the original position to the host control board. After receiving the homing signal, the host control board controls the rotary drive mechanism to drive the rotary shaft to rotate, so that the rotary cutting piece rotates to the position where the transfer hole is connected with the main input hole corresponding to the target number information, and then outputs a rotary cutting completion signal.

[0031] In the application, the step S13 further comprises:

[0032] Step S21: If the target number information is not consistent with the current number information, the host control board analyzes the difference between the target number information and the current number information;

[0033] If the difference is less than or equal to a set value, the host control board controls the rotary drive mechanism to drive the rotary shaft to rotate, so that the rotary cutting piece rotates to the position where the transfer hole is connected with the main input hole corresponding to the target number information, and then outputs a rotary cutting completion signal;

[0034] If the difference is greater than the set value, the host control board controls the rotary drive mechanism to drive the rotary shaft to rotate, and drives the lever to rotate to contact the micro switch, so that the micro switch sends a homing signal of the rotary drive mechanism returning to the original position to the host control board. After receiving the homing signal, the host control board controls the rotary drive mechanism to drive the rotary shaft to rotate, so that the rotary cutting piece rotates to the position where the transfer hole is connected with the main input hole corresponding to the target number information, and then outputs a rotary cutting completion signal.

[0035] Compared with the prior art, the application has the beneficial effects that: the multi-channel rotary cutting valve of the application is provided with a micro switch, and before the rotary cutting piece is switched to butt joint with another main input hole, the rotary cutting piece can press and trigger the micro switch through the rotating lever, at this time, the main control board receives the homing signal of the rotary driving mechanism returning to the original position, and plays the role of original point calibration. After calibration, the rotary driving mechanism can accurately drive the rotary cutting piece to rotate to the required position, can eliminate the error in the rotary cutting process, and can accurately butt joint the transfer hole with the main input hole to stably convey the fluid. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following briefly introduces the drawings needed in the embodiments, and the drawings in the following description are only corresponding drawings of some embodiments of the application.

[0037] Figure 1 It is a structural schematic view of the first embodiment of the multi-channel rotary cutting valve of the application.

[0038] Figure 2 It is an exploded structural schematic view of the multi-channel rotary cutting valve of the first embodiment.

[0039] Figure 3 It is a partial structural schematic view of the micro switch of the multi-channel rotary cutting valve of the first embodiment.

[0040] Figure 4 It is a partial exploded structural schematic view of the lever and the rotary shaft of the multi-channel rotary cutting valve of the first embodiment.

[0041] Figure 5 It is a sectional view of the connecting pipe of the multi-channel rotary cutting valve of the first embodiment, in which the connecting pipe is bent to connect the convex pipe and the transfer hole.

[0042] Figure 6 It is a sectional view of the connecting pipe of the multi-channel rotary cutting valve of the first embodiment, in which the connecting pipe is a straight strip to connect the convex pipe and the transfer hole.

[0043] Figure 7 It is a structural schematic view of the second embodiment of the multi-channel rotary cutting valve of the application.

[0044] Figure 8 It is an exploded structural schematic view of the multi-channel rotary cutting valve of the second embodiment.

[0045] Figure 9 It is a partial structural schematic view of the micro switch of the multi-channel rotary cutting valve of the second embodiment.

[0046] Figure 10 It is a sectional view of the multi-channel rotary cutting valve of the second embodiment.

[0047] Figure 11Flow chart of the rotary cutting control method of the present application.

[0048] Figure 12 Structure diagram of the rotary cutting piece and the water passing piece of the third embodiment. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0050] The directional terms mentioned in the present application are only the orientation of the drawings, and the directional terms are used to illustrate and understand the present application, and not to limit the present application.

[0051] The terms "first", "second", and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying relative importance, and are not limited as the order.

[0052] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, the connection can be detachable connection, or integral structure connection; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0053] In the prior art, the rotary cutting valve adopts a stepping motor as the drive. Since the stepping motor does not have a signal feedback device like a servo motor, the motor is prone to be stuck and lose steps during rotation. At this time, since there is no home calibration signal, the motor has the problem of inaccurate walking, thereby affecting the butt joint of the main input hole and the output hole and affecting the normal use of the rotary cutting valve.

[0054] In addition, the rotary cutting valve of the prior art is provided with a common volume cavity, and the input end and the output end are communicated through the common volume cavity. All fluids will pass through the common volume cavity and will be stored in the common volume cavity. However, with the passage of time, some fluids will deteriorate and become bad. For example, when the rotary cutting valve is applied to an automatic cooking machine, various seasonings are prone to mix together and remain in the volume cavity. After a long time, bacteria are prone to breed and mildew, thereby affecting human health.

[0055] The following is a first embodiment of a multi-channel rotary cutting valve provided by the present application, which can solve the above technical problems.

[0056] Please refer toFigures 1-5 In the drawings, similar elements are denoted by the same reference signs.

[0057] The embodiment provides a multi-channel rotary cutting valve, which comprises a valve shell 11, a rotary driving mechanism 12, a rotary shaft 13, a rotary cutting piece 15, an elastic piece 17, a lever 1B and a micro switch 1A.

[0058] The rotary shaft 13 penetrates through the valve shell 11, and one end of the rotary shaft 13 is connected with an output end of the rotary driving mechanism 12. The other end of the rotary shaft 13 is provided with an output hole 131 which communicates the inside and outside of the valve shell 11, and the valve shell 11 is provided with a plurality of main input holes 141 which communicate the inside and outside of the valve shell 11. The rotary driving mechanism 12 can be a motor which drives the rotary shaft 13 to rotate.

[0059] The rotary cutting piece 15 is located in the valve shell 11, and is sleeved on the outer periphery of the rotary shaft 13. The rotary cutting piece 15 is in transmission cooperation with the rotary shaft 13, and rotates synchronously with the rotary shaft 13. The rotary cutting piece 15 covers the plurality of main input holes 141, and is provided with a transfer hole 151. The rotary cutting piece 15 rotates to switch the transfer hole 151 to be connected with different main input holes 141, so that different main input holes 141 are communicated with the output hole 131.

[0060] The outer periphery of the rotary shaft 13 is provided with a limiting protrusion 132, and the elastic piece 17 is located between the rotary cutting piece 15 and the limiting protrusion 132. The elastic piece 17 is used for pressing the rotary cutting piece 15, so that the rotary cutting piece 15 keeps closing other main input holes 141 which are not connected with the transfer hole 151. The elastic piece 17 in the embodiment is a spring, the rotary cutting piece 15 comprises a plate body and a column body, and the elastic piece 17 is sleeved on the outer periphery of the column body of the rotary cutting piece 15.

[0061] Please refer to Figure 3 The micro switch 1A is fixedly arranged in the valve shell 11, and the inner wall of the valve shell 11 is provided with a fixing column which is in the same axial direction as the rotary shaft 13. The micro switch 1A is provided with a fixing hole 1A1 which is used for being inserted with the fixing column. The lever 1B is fixedly connected with the rotary shaft 13, and the micro switch 1A is located on the rotation track of the lever 1B. Before the rotary cutting piece 15 rotates to switch to another main input hole 141 each time, the rotary shaft 13 drives the lever 1B to rotate, and the lever 1B presses the micro switch 1A to be triggered. At this time, the host control board receives a homing signal of the rotary driving mechanism 12 returning to the original position, so that the original position calibration is realized. After the calibration, the rotary driving mechanism 12 can accurately drive the rotary cutting piece 15 to rotate to the required position, and can eliminate the error in the rotary cutting process, so that the transfer hole 151 is accurately connected with the main input hole 141, and the fluid is stably conveyed.

[0062] Please refer to Figure 4In the embodiment, the dial lever 1B comprises a ring 1B1 and a lever body 1B2 arranged on the side of the ring 1B1, the ring 1B1 is sleeved on the rotating shaft 13, a first positioning groove 1B3 is arranged on the inner side of the ring 1B1 close to the lever body 1B2, the two ends of the first positioning groove 1B3 penetrate the ring 1B1 along the axial direction of the ring 1B1, a second positioning groove 1B4 is arranged on the inner side of the ring 1B1 away from the lever body 1B2, the two ends of the second positioning groove 1B4 penetrate the ring 1B1 along the radial direction of the ring 1B1, and the circumferential surface of the rotating shaft 13 is provided with a first positioning block 133 for positioning cooperation with the first positioning groove 1B3 and a second positioning block 134 for positioning cooperation with the second positioning groove 1B4. The first positioning groove 1B3 penetrating the ring 1B1 along the axial direction of the ring 1B1 is arranged close to the lever body 1B2, and the second positioning groove 1B4 only penetrates part of the ring 1B1 along the radial direction of the ring 1B1, so that the overall strength of the ring 1B1 is good, and the connection stability with the rotating shaft 13 is high.

[0063] Please refer to Figure 2 The multi-channel rotary cutting valve of the embodiment further comprises a water passing piece 18 arranged between the rotary cutting piece 15 and the inner wall of the valve shell 11 where the main input holes 141 are located, and the water passing piece 18 is provided with first through holes 181 corresponding to the plurality of main input holes 141 one by one, and the rotary cutting piece 15 and the water passing piece 18 are made of ceramic material, preferably high-hardness and high-wear-resistance ceramic material, which can well ensure the sealing of the rotary cutting position and has long rotary switching service life and will not rust.

[0064] Further, a sealing gasket 19 is arranged between the water passing piece 18 and the inner wall of the valve shell 11 where the main input holes 141 are located, and the sealing gasket 19 is provided with second through holes 191 corresponding to the plurality of main input holes 141 one by one.

[0065] Preferably, convex ring circles are arranged on both sides of the sealing gasket 19 along the second through holes 191, and the convex ring circles are positioned and matched into the main input holes 141 or into the first through holes 181.

[0066] Please refer to Figure 2 The multi-channel rotary cutting valve of the embodiment further comprises a Hall switch 1E, a magnet support 1C and a plurality of magnets 1D, the Hall switch 1E is arranged between the sealing gasket 19 and the inner wall of the valve shell 11 where the main input holes 141 are located, the plurality of magnets 1D are embedded in the mounting holes 1C1 of the magnet support 1C, the plurality of magnets 1D are annularly distributed on the side of the axial center of the magnet support 1C, the magnet support 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 support 1C is located in the inner hole.

[0067] The magnet support 1C is provided with a clamping rod 1C2, and the rotary cutting piece 15 is provided with a clamping hole 152 matched with the clamping rod 1C2. The cooperation of the clamping rod 1C2 and the clamping hole 152 enables the magnet support 1C to stably connect with the rotary cutting piece 15. The magnet support 1C rotates with the rotary cutting piece 15, so that different magnets 1D are in turn sensed by the Hall switch 1E in the rotary process of the rotary cutting piece 15. In this way, it can be fed back which input hole 141 is connected with the transfer hole 151.

[0068] Please refer to Figure 2 、 Figure 5 and Figure 6 The multi-channel rotary cutting valve in the embodiment further comprises a connecting pipe 16 connected with the transfer hole 151 and the output hole 131. The other end of the transfer hole 151 is connected with the main input hole 141. The fluid can be better output through the connecting pipe 16, so as to reduce the residue and the breeding of bacteria and mildew.

[0069] The output hole 131 extends into the convex pipe 1313 on one side of the rotary shaft 13.

[0070] Please refer to Figure 5 Optionally, the output hole 131 comprises an axial hole section 1311 parallel to the axis of the rotary shaft 13 and a radial hole section 1312 perpendicular to the axis of the rotary shaft 13. The connecting pipe 16 is a flexible pipe, and the connecting pipe 16 connects the convex pipe 1313 and the transfer hole 151 through bending. The connecting pipe 16 specifically connects the axial hole section 1311 and the transfer hole 151 through bending.

[0071] Please refer to Figure 6 Optionally, the output hole 131 comprises an axial hole section parallel to the axis of the rotary shaft 13 and a radial hole section perpendicular to the axis of the rotary shaft 13. The rotary shaft 13 is provided with the axial hole section, the convex pipe 1313 is provided with the axial hole section and the radial hole section, and the convex pipe 1313 is arranged in a bent manner. The connecting pipe 16 is in a straight strip shape and connects the convex pipe 1313 and the transfer hole 151.

[0072] The output hole 131 comprises an axial hole section 1311 parallel to the axis of the rotary shaft 13 and a radial hole section 1312 perpendicular to the axis of the rotary shaft 13. The connecting pipe 16 is a flexible pipe.

[0073] It should be noted that the output hole 131, the main input hole 141 and the transfer hole 151 in the embodiment are all provided with a pipe body. The pipe body is convenient for connecting with the corresponding connecting pipe, input pipe or output pipe. The radial hole section 1312 is located in the pipe body of the output hole 131.

[0074] Please refer to Figures 1-3In the embodiment, the valve housing 11 comprises a main housing, a valve cover 14 (also referred to as the main housing by the reference numeral 11), and a fixed support 1F, one end of the main housing is open, the valve cover 14 is arranged on the opening, the valve cover 14 is arranged at an end of the valve housing 11 away from the rotary drive mechanism 12, the output hole 131 and a plurality of main input holes 141 are located on the end face of the valve cover 14, the plurality of main input holes 141 are annularly distributed on the side of the output hole 131, and the axis of the main input hole 141 is parallel to the axis of the rotating shaft 13.

[0075] The rotary drive mechanism 12 is located at an end of the main housing away from the opening, the rotary drive mechanism 12 is connected with the main housing through the fixed support 1F, and the toggle lever 1B and the micro switch 1A are arranged between the main housing and the fixed support 1F.

[0076] The working principle of the multi-channel rotary cutting valve with an independent water outlet pipeline in the embodiment is as follows: the rotary drive mechanism 12 drives the rotating shaft 13 to rotate, the rotating shaft 13 drives the rotary cutting piece 15 to rotate, the transfer hole 151 is switched to be in butt joint with different main input holes 141, and different main input holes 141 are switched to be in communication with the output hole 131. Different main input holes 141 can be used to transport different set fluids. The specific switching of the transfer hole 151 to be in butt joint with which input hole 141 can be obtained through counting feedback of the induction of the magnet 1D by the Hall switch 1E. Fluids are transported between the transfer hole 151 and the output hole 131 through the connecting pipe 16, and the switching of multiple channels is realized.

[0077] Before each rotary cutting, the rotary drive mechanism 12 drives the rotating shaft 13 to rotate and drives the toggle lever 1B to rotate to be in contact with the micro switch 1A, initial position calibration is performed, and after calibration, the rotary cutting piece 15 is rotated to a required position.

[0078] Please refer to Figure 11 The application further comprises a rotary cutting control method for controlling the working of the multi-channel rotary cutting valve in the embodiment by using a host control board, wherein the plurality of main input holes 141 are all numbered, and the rotary cutting control method comprises the following steps.

[0079] Step S11: When the host control board controls the rotary drive mechanism 12 to drive the transfer hole 151 to be in butt joint with a set number of main input holes 141, the set number is stored as current number information. That is, the current number information can feed back which number of main input hole 141 the transfer hole 151 is in butt joint with.

[0080] Step S12: The host control board receives target number information of the main input hole 141 that needs to be in butt joint input by a user, that is, the user needs to open a set main input hole 141 to be in butt joint with the output hole 131 to transport a required fluid, and the host control board compares the target number information with the current number information.

[0081] Step S13: If the target number information is consistent with the current number information, i.e. the main input hole 141 corresponding to the target number information is already aligned with the output hole 131, a rotation cutting completion signal is output. That is, the user can open the corresponding output switch to output the fluid required by the user.

[0082] If the target number information is inconsistent with the current number information, the host control board controls the rotation driving mechanism 12 to drive the rotating shaft 13 to rotate, and drives the rotating rod 1B to rotate to contact the micro switch 1A, so that the micro switch 1A sends a homing signal of the rotation driving mechanism 12 back to the original position to the host control board, which has the effect of original position calibration. After receiving the homing signal, the host control board controls the rotation driving mechanism 12 to drive the rotating shaft 13 to rotate, so that the rotating piece rotates to the position where the transfer hole 151 is aligned with the main input hole 141 corresponding to the target number information, and then outputs the rotation cutting completion signal. In this way, the error in the rotation cutting process can be eliminated, and the transfer hole 151 and the main input hole 141 can be precisely aligned to stably deliver the fluid.

[0083] In this embodiment, step S13 can further include:

[0084] Step S21: If the target number information is inconsistent with the current number information, the host control board analyzes the difference between the target number information and the current number information.

[0085] If the difference between the numbers is less than or equal to a set value, i.e. the main input hole 141 corresponding to the target number information is relatively close to the main input hole 141 aligned with the current transfer hole 151, the error in the rotation of the rotating piece 15 is small. The host control board controls the rotation driving mechanism 12 to drive the rotating shaft 13 to rotate, so that the rotating piece 15 rotates to the position where the transfer hole 151 is aligned with the main input hole 141 corresponding to the target number information, and then outputs the rotation cutting completion signal.

[0086] If the difference between the numbers is greater than the set value, i.e. the main input hole 141 corresponding to the target number information is relatively far from the main input hole 141 aligned with the current transfer hole 151, so the rotation driving mechanism 12 needs to control the rotating piece 15 to rotate a larger stroke, and the error will be larger. The host control board controls the rotation driving mechanism 12 to drive the rotating shaft 13 to rotate, and drives the rotating rod 1B to rotate to contact the micro switch 1A, so that the micro switch 1A sends a homing signal of the rotation driving mechanism 12 back to the original position to the host control board, which has the effect of original position calibration. After receiving the homing signal, the host control board controls the rotation driving mechanism 12 to drive the rotating shaft to rotate, so that the rotating piece rotates to the position where the transfer hole 151 is aligned with the main input hole 141 corresponding to the target number information, and then outputs the rotation cutting completion signal.

[0087] The method of step S21 can further improve the working efficiency of the rotary cutting control method, and ensure the accurate docking of the transfer hole 151 and the main input hole 141, and stable fluid conveying.

[0088] The following is a second embodiment of a multi-channel rotary cutting valve provided by the present application, which can solve the above technical problems. The main difference between the second embodiment and the first embodiment is that the main input hole and the output hole are arranged differently, and the structure of the magnet support is different. The other structural principles are basically the same, and the same parts will not be described again in this embodiment.

[0089] Please refer to Figures 7-10 The present embodiment provides a multi-channel rotary cutting valve, which comprises a valve housing 11, a rotary driving mechanism 12, a rotary shaft 13, a rotary cutting piece 15, an elastic member 17, a lever 1B, and a micro switch 1A.

[0090] The rotary shaft 13 penetrates the valve housing 11 and is connected to the output end of the rotary driving mechanism 12. The other end of the rotary shaft 13 is provided with an output hole 131 that communicates the inside and outside of the valve housing 11. The valve housing 11 is provided with a plurality of main input holes 141 that communicate the inside and outside of the valve housing 11. The rotary driving mechanism 12 can be a motor that drives the rotary shaft 13 to rotate.

[0091] The rotary cutting piece 15 is located in the valve housing 11 and is sleeved on the outer periphery of the rotary shaft 13. The rotary cutting piece 15 is in transmission cooperation with the rotary shaft 13 and rotates synchronously with the rotary shaft 13. The rotary cutting piece 15 covers the plurality of main input holes 141 and is provided with a transfer hole 151. The rotary cutting piece 15 rotates to switch the docking of the transfer hole 151 with different main input holes 141, so as to switch the communication between different main input holes 141 and the output hole 131.

[0092] The outer periphery of the rotary shaft 13 is provided with a limiting protrusion 132, and the elastic member 17 is located between the side of the rotary cutting piece 15 away from the input port and the limiting protrusion 132. The elastic member 17 is used to press the rotary cutting piece 15 to keep the rotary cutting piece 15 closed to the other main input holes 141 that are not docked with the transfer hole 151. The elastic member 17 in the present embodiment is a spring, and the rotary cutting piece 15 includes a plate body and a column body. The elastic member 17 is sleeved on the outer periphery of the column body of the rotary cutting piece 15.

[0093] The micro switch 1A is fixedly arranged in the valve shell 11, and a fixed column is arranged on the inner wall of the valve shell 11, the axial direction of the fixed column is consistent with the axial direction of the rotating shaft 13, and the micro switch 1A is provided with a fixed hole 1A1 for plugging with the fixed column. The lever 1B is fixedly connected with the rotating shaft 13, and the micro switch 1A is located on the rotation track of the lever 1B. Before the rotary cutting piece 15 is switched to another main input hole 141 for docking each time, the rotating shaft 13 drives the lever 1B to rotate, the lever 1B presses and triggers the micro switch 1A, at this time, the host control board receives the homing signal of the rotary driving mechanism 12 returning to the original position, so as to have the effect of original point calibration. After calibration, the rotary driving mechanism 12 can accurately drive the rotary cutting piece 15 to rotate to the required position, can eliminate the error in the process of multiple rotary cutting rotations, and can make the transfer hole 151 and the main input hole 141 accurately docked, so that the fluid is stably conveyed.

[0094] In the embodiment, the lever 1B includes a ring-shaped part 1B1 and a rod body 1B2 arranged on the side of the ring-shaped part 1B1, the ring-shaped part 1B1 is sleeved on the rotating shaft 13, a first positioning groove 1B3 is arranged on the inner side of the ring-shaped part 1B1 close to the rod body 1B2, the two ends of the first positioning groove 1B3 penetrate through the ring-shaped part 1B1 along the axial direction of the ring-shaped part 1B1, a second positioning groove 1B4 is arranged on the inner side of the ring-shaped part 1B1 away from the rod body 1B2, the two ends of the second positioning groove 1B4 penetrate through the ring-shaped part 1B1 along the radial direction of the ring-shaped part 1B1, and the circumference of the rotating shaft 13 is provided with a first positioning block 133 for positioning cooperation with the first positioning groove 1B3 and a second positioning block 134 for positioning cooperation with the second positioning groove 1B4. The first positioning groove 1B3 penetrating through the ring-shaped part 1B1 along the axial direction of the ring-shaped part 1B1 is arranged close to the rod body 1B2, and the second positioning groove 1B4 only penetrates through part of the ring-shaped part 1B1 along the radial direction of the ring-shaped part 1B1, so that the overall strength of the ring-shaped part 1B1 is good, and the connection stability with the rotating shaft 13 is high.

[0095] Please refer to Figure 8 The multi-channel rotary cutting valve in the embodiment further includes a Hall switch 2E, a magnet bracket 2C and magnets 2D, the Hall switch 2E is arranged between the sealing gasket 19 and the inner wall of the valve shell 11 where the main input hole 241 is located, the magnets 2D are embedded in the mounting holes 2C1 of the magnet bracket 2C, the magnets 2D are annularly distributed on the side of 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.

[0096] In the embodiment, the magnet bracket 2C is provided with a connecting column 2C2, and the rotary cutting piece 15 is provided with a connecting hole for positioning connection with the connecting column 2C2. The magnet bracket 2C rotates with the rotary cutting piece 15, so that different magnets 2D are in turn sensed by the Hall switch 2E in the rotary cutting process of the rotary cutting piece 15.

[0097] The multi-channel rotary valve in the embodiment further comprises a connecting pipe 16 connecting one end of the transfer hole 151 and the output hole 131, and the other end of the transfer hole 151 is connected with the main input hole 241.

[0098] Please refer to Figure 10 In the embodiment, the inner side of the valve shell 11 is provided with a fixed groove 112, the fixed groove 112 is provided with an output transfer hole 111 connecting the inner and outer spaces of the valve shell 11, one end of the output hole 131 of the rotary shaft 13 is rotationally connected in the fixed groove 112, the output hole 131 is connected with the output transfer hole 111, and the part of the rotary shaft 13 located in the fixed groove 112 is sleeved with a sealing ring 21 to realize dynamic sealing between the rotary shaft 13 and the inner wall of the fixed groove 112. By connecting the output hole 131 with the output transfer hole 111, the external output pipe is connected with the output transfer hole 111 without rotating with the rotary shaft 13, effectively preventing the external output pipe from being twisted and wound together with the rotary shaft 13, and avoiding causing the valve to fail.

[0099] It can be understood that the fixed groove 112 and the output transfer hole 111 can also be arranged on the valve cover in the first embodiment, which can also realize dynamic sealing between the rotary shaft 13 and the inner wall of the fixed groove 112, and can avoid the problem that the external output pipe is twisted and wound together with the rotary shaft 13, causing the valve to fail.

[0100] In the embodiment, the valve shell 11 comprises a main shell, a valve cover 24, and a fixed support 2F, one end of the main shell is an opening, the valve cover 24 is closed and arranged on the opening, and a plurality of main input holes 241 are arranged on the circumferential side surface of the valve cover 24, and the axis of the main input hole 241 is perpendicular to the axis of the rotary shaft 13.

[0101] The valve cover 24 is located between the rotary driving mechanism 12 and the main shell, the rotary driving mechanism 12 is connected with the valve cover 24 through the fixed support 2F, and the lever 1B and the micro switch 1A are arranged between the valve cover 24 and the fixed support 2F.

[0102] The working principle of the switching channel of the multi-channel rotary valve with independent water outlet pipeline in the embodiment is consistent with that of the first embodiment, and the embodiment will not be described here.

[0103] The following is a third embodiment of a multi-channel rotary valve provided by the application which can solve the above technical problems. The difference between the third embodiment and the first and second embodiments is mainly that the third embodiment is provided with a secondary input hole on the valve shell, and the secondary input hole can cooperate with the main input hole to realize fluid mixing and delivery.

[0104] The embodiment provides a multi-channel rotary cutting valve, which comprises a valve shell 11, a rotary driving mechanism 12, a rotary shaft 13, a rotary cutting piece 15, an elastic piece 17, a lever 1B and a micro switch 1A.

[0105] The rotary shaft 13 penetrates through the valve shell 11, and one end of the rotary shaft 13 is connected with an output end of the rotary driving mechanism 12. The other end of the rotary shaft 13 is provided with an output hole 131 which communicates the inside and outside of the valve shell 11, and the valve shell 11 is provided with a plurality of main input holes 141 which communicate the inside and outside of the valve shell 11. The rotary driving mechanism 12 can be a motor which drives the rotary shaft 13 to rotate.

[0106] The rotary cutting piece 15 is located in the valve shell 11, is sleeved on the outer periphery of the rotary shaft 13 in a sliding mode, and is in transmission cooperation with the rotary shaft 13, so that the rotary cutting piece 15 rotates synchronously with the rotary shaft 13. The rotary cutting piece 15 covers the plurality of main input holes 141, is provided with a transfer hole 151, and rotates to switch the transfer hole 151 to be connected with different main input holes 141, so that different main input holes 141 are communicated with the output hole 131.

[0107] The outer periphery of the rotary shaft 13 is provided with a limiting protrusion 132, the elastic piece 17 is located between the rotary cutting piece 15 which is away from the input port and the limiting protrusion 132, and the elastic piece 17 is used for pressing the rotary cutting piece 15, so that the rotary cutting piece 15 keeps closing other main input holes 141 which are not connected with the transfer hole 151. The elastic piece 17 in the embodiment is a spring, the rotary cutting piece 15 comprises a plate body and a column body, and the elastic piece 17 is sleeved on the outer periphery of the column body of the rotary cutting piece 15.

[0108] The micro switch 1A is fixedly arranged in the valve shell 11, the inner wall of the valve shell 11 is provided with a fixing column which is in the same axial direction as the rotary shaft 13, and the micro switch 1A is provided with a fixing hole 1A1 which is used for being inserted with the fixing column. The lever 1B is fixedly connected with the rotary shaft 13, and the micro switch 1A is located on the rotation track of the lever 1B. Before the rotary cutting piece 15 rotates to switch to another main input hole 141 which is connected, the rotary shaft 13 drives the lever 1B to rotate, the lever 1B presses and triggers the micro switch 1A, at this moment, the host control board receives a homing signal that the rotary driving mechanism 12 returns to the original position, so that the original position calibration is realized. After calibration, the rotary driving mechanism 12 can accurately drive the rotary cutting piece 15 to rotate to the required position, can eliminate the error in the rotary cutting process, and can make the transfer hole 151 and the main input hole 141 accurately connected and stably transport the fluid.

[0109] The multi-channel rotary cutting valve of the embodiment further comprises a water passing piece 18 arranged between the rotary cutting piece 15 and the inner wall of the valve shell 11 where the main input holes 141 are located. The water passing piece 18 is provided with first through holes 33 corresponding to the main input holes 141. The rotary cutting piece 15 and the water passing piece 18 are made of ceramic material, preferably high-hardness and high-wear-resistance ceramic material, which can well ensure the sealing of the rotary cutting position and has long rotary switching life and will not rust.

[0110] Further, a sealing gasket 19 is arranged between the water passing piece 18 and the inner wall of the valve shell 11 where the main input holes 141 are located. The sealing gasket 19 is provided with second through holes corresponding to the main input holes 141.

[0111] Please refer to Figure 12 The multi-channel rotary cutting valve further comprises at least one secondary input hole communicating the inner and outer spaces of the valve shell. The secondary input can refer to the arrangement of the main input hole 141 in the first embodiment Figure 1 and the second embodiment Figure 7 The secondary input is also arranged on the valve cover. The rotary cutting piece 15 covers the secondary input hole. The water passing piece 18 is provided with a third through hole 31 corresponding to the secondary input hole. The sealing gasket 19 is provided with a fourth through hole corresponding to the secondary input hole.

[0112] The side of the transfer hole on the rotary cutting piece 15 close to the water passing piece 18 is provided with a coupling hole 32 with a long strip-shaped radial section. The radial extension direction of the coupling hole 32 is consistent with the radial direction of the rotary cutting piece 15. The radial sections of the first through hole 33 and the second through hole are both long strips. The radial extension directions of the first through hole 33 and the second through hole are consistent with the circumferential direction of the rotary cutting piece 15. The third through hole 31 and part of the first through hole 33 are located on the same radial line of the water passing piece 18.

[0113] The rotary cutting piece 15 includes a single input position and a multi-input position on the rotation track. When the rotary cutting piece 15 is located at the single input position, the coupling hole 32 is connected with the first through hole 33, realizing the delivery of single fluid by a single main input hole 141. When the rotary cutting piece 15 is located at the multi-input position, the coupling hole 32 is connected with the first through hole 33 and the third through hole 31 at the same time, realizing the delivery of mixed fluid by the secondary input hole and a single main input hole 141.

[0114] Thanks to the accuracy of the multi-channel rotary cutting valve in controlling the rotary cutting piece, the rotary driving mechanism 12 can better control the rotary cutting piece 15 to rotate to the single input position or the multi-input position, realizing the delivery of single fluid by a single main input hole 141 or the delivery of mixed fluid by the secondary input hole and a single main input hole 141.

[0115] The multi-channel rotary cutting valve of the present application can press the micro switch through the rotating lever before the rotary cutting piece switches to another main input hole docking each time, at this time, the main machine control panel receives the homing signal of the rotary driving mechanism returning to the original position, and plays the role of original point calibration. After calibration, the rotary driving mechanism can accurately drive the rotary cutting piece to the position required to reach, can eliminate the error in the process of multiple rotary cutting rotation, and can accurately dock the transfer hole with the main input hole to stably convey the fluid.

[0116] In summary, although the present application has been disclosed with preferred embodiments as above, the above preferred embodiments are not intended to limit the present application, and those skilled in the art can make various modifications and decorations without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application is defined by the scope of the claims.

Claims

1. A multi-channel rotary valve, characterized in that, Includes: valve housing, rotary drive mechanism, rotary shaft, rotary blade, elastic element, lever, and micro switch; The rotating shaft rotatably passes through the valve housing. One end of the rotating shaft is connected to the output end of the rotating drive mechanism. The other end of the rotating shaft is provided with an output hole that connects the inner and outer spaces of the valve housing. The valve housing is provided with multiple main input holes that connect the inner and outer spaces of the valve housing. The rotary blade is located inside the valve housing. The rotary blade is slidably sleeved on the outer periphery of the rotating shaft, and the rotary blade is in a driving engagement with the rotating shaft. The rotary blade covers multiple main input holes. A transfer hole is provided on the rotary blade. Rotation of the rotary blade causes the transfer hole to switch to engage with different main input holes. A limiting protrusion is provided on the outer periphery of the rotating shaft. The elastic element is located between the side of the rotary blade away from the input port and the limiting protrusion. The micro switch is fixedly installed inside the valve housing. A fixing post is provided on the inner wall of the valve housing. The axial direction of the fixing post is consistent with the axial direction of the rotating shaft. The micro switch is provided with a fixing hole for insertion into the fixing post. The lever is fixedly connected to the rotating shaft. The micro switch is located on the rotation trajectory of the lever. Before each spin cut, the rotary drive mechanism drives the rotary shaft to rotate, causing the lever to rotate until it contacts the micro switch to perform initial position calibration. After calibration, the spin cutter rotates to the required position.

2. The multi-channel rotary valve according to claim 1, characterized in that, The lever includes an annular component and a rod body disposed around the annular component. The annular component is sleeved on the rotating shaft. A first positioning groove is provided on the inner side of the annular component near the rod body. The two ends of the first positioning groove penetrate the annular component along the axial direction. A second positioning groove is provided on the inner side of the annular component away from the rod body. The two ends of the second positioning groove penetrate the annular component along the radial direction. A first positioning block for positioning and engaging with the first positioning groove and a second positioning block for positioning and engaging with the second positioning groove are provided around the circumference of the rotating shaft.

3. The multi-channel rotary valve according to claim 1, characterized in that, The multi-channel rotary valve also includes a water-passing plate, which is disposed between the rotary blade and the inner wall of the valve body where the main input port is located. The water-passing plate is provided with a first through hole corresponding to each of the multiple main input ports. The rotary blade and the water-passing plate are made of ceramic material. A sealing gasket is provided between the water-passing plate and the inner wall of the valve body where the main input hole is located, and the sealing gasket is provided with a second through hole corresponding to each of the multiple main input holes.

4. The multi-channel rotary valve according to claim 3, characterized in that, The multi-channel rotary valve also includes a Hall switch, a magnet bracket, and magnets. The Hall switch is disposed between the sealing gasket and the inner wall of the valve housing where the main input port is located. Multiple magnets are embedded in the magnet bracket and are distributed in a ring around the circumference of the axial center of the magnet bracket. The magnet bracket is located between the rotary blade and the water-passing blade. The water-passing blade has an inner hole, and the magnet bracket is located inside the inner hole.

5. The multi-channel rotary valve according to claim 4, characterized in that, The magnet bracket is provided with a connecting post, and the rotary slice is provided with a connecting hole for positioning and connecting with the connecting post; or the magnet bracket is provided with a locking rod, and the rotary slice is provided with a locking hole for inserting with the locking rod.

6. The multi-channel rotary valve according to claim 4, characterized in that, One end of the transfer hole and the output hole are connected by a connecting pipe; A protruding tube is provided on one side of the rotating shaft, and the output hole extends into the protruding tube; The connecting pipe connects the convex pipe and the transfer hole by bending, or the convex pipe is bent, and the connecting pipe is straight and connects the convex pipe and the transfer hole.

7. The multi-channel rotary valve according to claim 3, characterized in that, The multi-channel rotary valve also includes at least one secondary input hole that connects the inner and outer spaces of the valve housing. The rotary blade covers the secondary input hole. The water-passing plate is provided with a third through hole corresponding to the secondary input hole. The sealing gasket is provided with a fourth through hole corresponding to the secondary input hole. The transfer hole on the rotary slice is provided with a connecting hole with a long radial cross-section on the side near the water-passing plate. The radial extension direction of the connecting hole is consistent with the radial direction of the rotary slice. The radial cross-section of the first through hole and the second through hole is long, and the radial extension direction of the first through hole and the second through hole is consistent with the circumferential direction of the rotary slice. The third through hole and part of the first through hole are located on the same radial line of the water-passing plate. The rotary slice has a single input position and multiple input positions on its rotation trajectory. When the rotary slice is located at the single input position, the connecting hole is connected to the first through hole. When the rotary slice is located at the multiple input position, the connecting hole is connected to both the first through hole and the third through hole.

8. The multi-channel rotary valve according to claim 1, characterized in that, The valve housing includes a main housing, a valve cover, and a fixed bracket. One end of the main housing is open, and the valve cover is closed over the opening. The output hole and a plurality of main input holes are located on the end face of the valve cover, and the axis of the main input holes is parallel to the axis of the rotating shaft. The rotary drive mechanism is located at the end of the main housing away from the opening. The rotary drive mechanism is connected to the main housing through the fixed bracket. The lever and the micro switch are disposed between the main housing and the fixed bracket.

9. The multi-channel rotary valve according to claim 1, characterized in that, The valve housing includes a main housing, a valve cover, and a fixed bracket. One end of the main housing is open, and the valve cover is closed on the opening. A plurality of main input holes are disposed on the peripheral side of the valve cover, and the axis of the main input holes is perpendicular to the axis of the rotation 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 the fixed bracket. The lever and the micro switch are disposed between the valve cover and the fixed bracket. The valve housing has a fixing groove on its inner side, and an output adapter hole is provided in the fixing groove to connect the inner and outer spaces of the valve housing. One end of the rotating shaft with the output hole is rotatably connected in the fixing groove, and the output hole is connected to the output adapter hole. A sealing ring is fitted on the part of the rotating shaft located in the fixing groove.

10. A rotary cutting control method, characterized in that, The multi-channel rotary valve according to any one of claims 1-9 is controlled using a host control board, and the rotary control method includes the following steps: Step S11: Each of the multiple main input holes has a corresponding number. When the host control board controls the rotary drive mechanism to drive the transfer hole to dock with the main input hole with the set number, the set number is stored as the current number information. Step S12: The host control board receives the target number information of the main input hole that needs to be connected, which is input by the user; the host control board compares the target number information with the current number information. Step S13: If the target number information is consistent with the current number information, then output a rotary cutting completion signal; If the target number information is inconsistent with the current number information, the host control board controls the rotary drive mechanism to drive the rotary shaft to rotate, causing the lever to rotate to contact the micro switch, so that the micro switch sends a return signal to the host control board for the rotary drive mechanism to return to the origin. After receiving the return signal, the host control board controls the rotary drive mechanism to drive the rotary shaft to rotate, so that the rotary slice rotates to the position where the transfer hole aligns with the main input hole corresponding to the target number information, and then outputs a rotary slice completion signal.

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