Intelligent channel selector for grain depot and channel selection method

Abstract

The present invention discloses an intelligent channel selector and channel selection method for a grain depot, which solves the problem of low automation of the grain condition detection channel selector in the prior art. The present invention includes a box body and a controller, wherein a driving device, a static disk and a dynamic disk are arranged in the box body, the driving device and the static disk are fixedly arranged in the box body, the dynamic disk cooperates with the static disk and is connected to the driving device, an air outlet mechanism is arranged on the dynamic disk, an air intake mechanism is arranged on the static disk, and the air outlet mechanism corresponds to the air intake mechanism; a shutdown trigger mechanism is arranged between the dynamic disk and the static disk, a locking mechanism is arranged on the dynamic disk, and the locking mechanism corresponds to the positioning trigger mechanism arranged on the static disk, and the shutdown trigger mechanism, the positioning trigger mechanism, and the driving device are all connected to the controller. The present invention has an ingenious design and a compact structure, can perform intelligent detection on different grain depots, has a wide range of applications, and has high market value and promotion value.

Description

Technical Field

[0001] The present invention relates to the technical field of channel selectors, and in particular to an intelligent channel selector for a grain depot and a channel selection method. Background Art

[0002] Channel selectors are mostly used in intelligent detection and control systems for grain storage warehouses. Multiple monitoring points are set up in each granary. By sampling, detecting and analyzing the gas and larvae at each monitoring point, ventilation, dehumidification, cooling, and pest control measures are taken in the granary to always maintain the best environmental conditions for safe grain storage.

[0003] However, the existing channel selector has a simple structure and often requires manual disassembly and assembly to select appropriate monitoring points. It has a low degree of automation and low detection accuracy. Therefore, it is necessary to develop an automated channel selector. Summary of the invention

[0004] In view of the deficiencies in the above-mentioned background technology, the present invention proposes an intelligent channel selector and a channel selection method for a grain depot, which solves the problem of low automation of the grain condition detection channel selector in the prior art.

[0005] The technical solution of the present invention is implemented as follows: an intelligent channel selector for a grain depot comprises a housing and a controller, wherein a driving device, a static disk and a moving disk are arranged in the housing, the driving device and the static disk are fixedly arranged in the housing, the moving disk cooperates with the static disk and is connected to the driving device, an air outlet mechanism is arranged on the moving disk, an air intake mechanism is arranged on the static disk, and the air outlet mechanism corresponds to the air intake mechanism; a shutdown trigger mechanism is arranged between the dynamic disk and the static disk, a locking mechanism is arranged on the dynamic disk, and the locking mechanism corresponds to a positioning trigger mechanism arranged on the static disk, and the shutdown trigger mechanism, the positioning trigger mechanism and the driving device are all connected to the controller.

[0006] A threaded inner sleeve and a crank arm are provided on the output shaft of the driving device, and the threaded inner sleeve and the crank arm rotate synchronously with the output shaft of the driving device. A threaded outer sleeve is fixedly provided at the center of the movable disk, and the threaded inner sleeve is threadedly connected to the threaded outer sleeve. A transmission screw is provided on one side of the threaded outer sleeve, and the transmission screw is threadedly connected to the movable disk, and the crank arm corresponds to the transmission screw.

[0007] The shutdown trigger mechanism includes a restraining screw, a special-shaped trigger rod and a first position switch. The restraining screw is arranged on the static disk and the free end of the restraining screw extends into the gap between the dynamic disk and the static disk. An annular groove is provided on the threaded inner sleeve. One end of the special-shaped trigger rod is clamped in the annular groove, and the other end extends to contact the restraining screw and the first position switch.

[0008] An annular pad is provided at the rear of the static disk, 45 air inlet mechanisms are arranged circumferentially on the annular pad, and an air outlet mechanism is provided on the dynamic disk. The air inlet mechanism passes through the static disk and corresponds to the air outlet mechanism.

[0009] The air intake mechanism comprises an air intake pipe and an air intake joint, the air intake joint is fixed on the annular pad, the air intake pipe is connected to the air intake joint, and a first sealing ring is provided at the connection between the air intake joint and the static disk.

[0010] The air outlet mechanism includes an air outlet pipe and an air outlet joint. The air outlet joint is fixed on the moving disk. One end of the air outlet pipe is connected to the air outlet joint, and the other end is connected to a rotating joint arranged on the box body. A sealing ring is provided on the outer periphery of the air inlet end of the air outlet joint, and the sealing ring is located between the static disk and the moving disk.

[0011] The locking mechanism includes a zero disk and a position disk, both of which are fixedly connected to the moving disk, and the zero disk is located in front of the position disk, and the central axis of the position disk and the central axis of the zero disk coincide with the central axis of the moving disk.

[0012] At least 45 first female teeth are evenly distributed on the outer circumference of the position disk, and at least one second female tooth is arranged on the outer circumference of the zero position disk. The first female teeth and the second female teeth are respectively matched with the positioning trigger mechanism.

[0013] The positioning trigger mechanism includes a double pawl assembly and a position switch assembly. The double pawl assembly is rotatably connected to the static disk through a rotating shaft. The position switch assembly is fixed on the static disk. One end of the double pawl assembly cooperates with the first female tooth and the second female tooth respectively, and the other end is connected to the static disk through a spring. One end of the double pawl assembly connecting spring corresponds to the triggering position of the position switch assembly.

[0014] The double pawl assembly includes a first pawl and a second pawl, the first pawl cooperates with the first female tooth, and the second pawl cooperates with the second female tooth. The position switch assembly includes a front position switch and a rear position switch, the first pawl corresponds to the rear position switch, and the second pawl corresponds to the front position switch.

[0015] A channel selection method for an intelligent channel selector for a grain depot comprises the following steps:

[0016] S1: Zero position calibration: The second pawl is inserted into the second female tooth of the zero position disk, the second pawl contacts the front position switch, and the movable disk is at the zero position; suppose that the Nth air intake mechanism is connected with the air outlet mechanism, N is the number of air intake mechanisms, the number of air intake mechanism positions is set to N in the counter in the controller, and the device is started;

[0017] S2: Unlocking: The driving device rotates counterclockwise, and the threaded inner sleeve, crank arm and special-shaped trigger rod rotate synchronously with the driving device. At this time, the crank arm does not contact the transmission screw. Since the pawl assembly has a certain friction resistance on the movable plate, the movable plate does not rotate but is driven by the threaded outer sleeve to move axially away from the static plate. When there is enough clearance between the sealing ring and the static plate, the crank arm contacts the transmission screw, the special-shaped trigger rod contacts the constraint screw, the special-shaped trigger rod stops rotating, and the movable plate is unlocked;

[0018] S3: Positioning: The threaded inner sleeve, threaded outer sleeve, crank arm and movable plate continue to rotate counterclockwise synchronously, and the position plate on the movable plate triggers the first ratchet to swing, thereby triggering the rear position switch to act. The normally open contact of the rear position switch closes once each time the first ratchet moves, and the rear position switch transmits a signal to the counter. When the number of signals received by the counter is equal to the set number of intake mechanism positions N, the controller controls the drive device to rotate clockwise;

[0019] S4: Locking: The moving plate is locked by the first female tooth on the position plate and the first pawl, and the driving device continues to rotate clockwise. The moving plate is axially moved toward the direction close to the static plate through the threaded inner sleeve and the threaded outer sleeve. The special-shaped trigger rod loses its constraint and rotates synchronously with the threaded inner sleeve. The sealing ring is compressed to seal the moving plate and the static plate. When the sealing requirement is met, the special-shaped trigger rod triggers the first position switch to act. The first position switch transmits a signal to the controller, and the air intake mechanism in the Nth position is connected to the air outlet mechanism. Then the controller controls the driving device to stop rotating.

[0020] S5: Return to zero: If there is a power outage or the device status cannot be identified, the second pawl is inserted into the second female tooth of the zero position disk, the second pawl contacts the front position switch, the moving disk is at the zero position, and the lock enters the locked state.

[0021] The present invention adopts the ingenious cooperation of the moving disk and the static disk. After the air outlet mechanism is set to be connected with the air inlet mechanism at a specific position, the device will automatically complete the three steps of "unlocking-positioning-locking" when it is started, so that the air outlet of the air outlet mechanism is connected with the air inlet of the set air inlet mechanism, and the remaining air inlets are closed, so as to complete accurate connection, with a high degree of automation, and greatly save manpower and material resources. The present invention has an ingenious design and a compact structure, can perform intelligent detection on different grain depots, has a wide range of applications, and has high market value and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0023] Figure 1 It is a schematic diagram of the overall internal structure of the present invention.

[0024] Figure 2 for Figure 1 Center F view.

[0025] Figure 3 for Figure 1 Middle BB view.

[0026] Figure 4 for Figure 2 Center DD view.

[0027] Figure 5 for Figure 1 Middle E view.

[0028] Figure 6 for Figure 1 Center AA view.

[0029] Figure 7 for Figure 6 Center CC view.

[0030] Figure 8 The exploded view of the present invention is when the moving plate and the stationary plate are superimposed parts of thin stainless steel plates.

[0031] Fig. 9 It is a schematic diagram of the crank arm state when the present invention is in zero position.

[0032] Fig.10 It is a schematic diagram of the state of the special-shaped trigger rod of the present invention when it is in the zero position.

[0033] Fig.11 It is a schematic diagram of the crank arm state when the present invention is in the unlocked state.

[0034] Fig.12 It is a schematic diagram of the special-shaped trigger lever state when the present invention is in the unlocked state.

[0035] Fig.13 It is a schematic diagram of the crank arm state when the present invention is in the position-seeking state.

[0036] Fig.14 It is a schematic diagram of the state of the special-shaped trigger rod when the present invention is in the position-seeking state.

[0037] Fig.15 It is a schematic diagram of the crank arm state when the present invention is in the zero state.

[0038] Fig.16 It is a schematic diagram of the special-shaped trigger rod state when the present invention is in the zero state. DETAILED DESCRIPTION

[0039] 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 described embodiments 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] like Figure 1 As shown, embodiment 1, an intelligent channel selector for a grain depot, includes a housing 1 and a controller, wherein a driving device 2, a static plate 3 and a dynamic plate 4 are arranged in the housing 1, and the driving device 2 adopts a motor. The driving device 2 and the static plate 3 are fixedly arranged in the housing 1, the dynamic plate 4 cooperates with the static plate 3 and is connected to the driving device 2, the dynamic plate 4 is located in front of the static plate 3, and the dynamic plate 4 fits in front of the static plate 3. Under the action of the driving device, the dynamic plate moves relative to the static plate. An air outlet mechanism 5 is arranged on the dynamic plate 4, and an air intake mechanism 6 is arranged on the static plate 3. The air outlet mechanism 5 and the air intake mechanism 6 are located on the same circle, that is, the air outlet mechanism 5 and the air intake mechanism 6 can be connected through the rotation of the dynamic plate. A shutdown trigger mechanism 7 is arranged between the dynamic plate 4 and the static plate 3. After the shutdown trigger mechanism is triggered, the signal is transmitted to the controller, and the controller controls the driving device to stop rotating. The moving disk 4 is provided with a locking mechanism 8, which corresponds to the positioning trigger mechanism 9 arranged on the static disk 3. The positioning trigger mechanism is triggered by the locking mechanism to find the air outlet mechanism 5 and the corresponding air intake mechanism 6 for coordination and communication. The shutdown trigger mechanism 7, the positioning trigger mechanism 9 and the driving device 2 are all connected to the controller, and the controller controls the corresponding actions, as well as the collection and processing of signals.

[0041] like Figure 8 As shown, the moving disk 4 is located on the static disk 3 and can be made of a superimposed piece of thin stainless steel plates or an existing machined integrated piece. The static disk made of a superimposed piece of thin stainless steel plates is a square piece formed by three superimposed plates, which are fastened together by screws; the moving disk is similar to the static disk and is a circular piece formed by four superimposed plates. The left plate is a "zeroing" action plate, the right plate is a "positioning" counting plate, and the two middle plates are pads. Multiple screw holes are set on the left plate surface of the static disk and the right plate surface of the moving disk to adjust the locking degree and loosening gap between the two disks. The device is installed in a box body, and the cables and air pipes leading outward are all covered with rubber sleeves. The gear card, pressure plate and O-ring on the motor shaft are to prevent the phosphine gas used to "fumigate" grain in the granary from corroding the device components when the box leaks.

[0042] Preferably, if Figure 5As shown, the rear part of the static disk 3 is provided with an annular pad 15, which is fixed to the static disk by screws. 45 air intake mechanisms 6 are arranged on the annular pad 15 along the circumference. The arrangement of the annular pad avoids interference with the installation of the air intake pipe connector, reduces the size of the static plate, and makes the device compact and small. An air outlet mechanism 5 is arranged on the dynamic disk 4. The air intake mechanism 6 passes through the static disk 3 and corresponds to the air outlet mechanism 5. The air outlet mechanism 5 is connected with the corresponding air intake mechanism after rotating to the corresponding air intake mechanism, which is convenient for gas sampling and detection. The 0 positions corresponding to the 45 air intake mechanisms 6 and 1 air outlet mechanism are evenly distributed on the static disk. That is, 46 T-shaped rubber sleeves are evenly installed on the central circumference of the static disk 3, and one of the rubber sleeves is the "zero position" point inlet closure. The 45 air inlets are connected to the 45 monitoring points in the warehouse with air pipes, and the 1 air outlet is connected to the air pump to the detection equipment. There are 46 working positions. When in position 0, the outlet port 1 is not connected to the inlet port 45; when in the other 45 positions, the outlet port in each position is only connected to one of the inlet ports in the 45 routes, and the remaining 44 routes are closed. To connect any of the 45 inlet ports to the outlet port, set and input the "inlet port number". After the device is started, it will automatically complete the three steps of "unlock-position-lock" to connect the outlet port to the set inlet port, and close the remaining 44 inlet ports.

[0043] Furthermore, the output shaft of the driving device 2 is connected with a threaded inner sleeve 10 through a key, and the crank arm 12 is locked at the outer end of the output shaft through a nut and is located in front of the threaded inner sleeve. The threaded inner sleeve 10 and the crank arm 12 can rotate synchronously with the output shaft. When the transmission screw gives the crank arm a resistance, the crank arm can rotate relative to the output shaft, and the driving screw drives the movable plate to rotate. A threaded outer sleeve 11 is fixed at the center of the movable plate 4, that is, the movable plate is fixed to the center of the movable plate by screws, and the threaded inner sleeve 10 is threadedly connected with the threaded outer sleeve 11, that is, the threaded inner sleeve is provided with an external thread, and the threaded outer sleeve is provided with an internal thread. The threaded inner sleeve 10 is located in the threaded outer sleeve 11 and the internal thread cooperates with the external thread. A transmission screw 13 is provided on one side of the threaded sleeve 11, and the transmission screw 13 is threadedly connected to the movable disk 4, that is, a plurality of threaded holes 16 are provided on the movable disk 4, and the plurality of threaded holes 16 are located on concentric arcs concentric with the movable disk. The transmission screw 13 can be connected to any threaded hole, and the crank arm 12 corresponds to the transmission screw 13, that is, the length of the crank arm 12 is greater than the radius of the concentric arc where the threaded hole is located. When the crank arm rotates to a certain angle with the output shaft of the driving device 2, the transmission screw 13 can stop the crank arm from continuing to rotate, and at this time the crank arm does not rotate synchronously with the output shaft, and the crank arm pushes the transmission screw to drive the movable disk to start rotating.

[0044] Further, if Figure 6 , 7As shown, the stop trigger mechanism 7 includes a constraint screw 701, a special-shaped trigger rod 702 and a first position switch 703. The constraint screw 701 is vertically threadedly connected to the static plate 3 and the free end of the constraint screw 701 extends into the gap 14 between the moving plate 4 and the static plate 3. When the special-shaped trigger rod rotates to contact the constraint screw 701, the constraint screw 701 prevents it from continuing to rotate. The threaded inner sleeve 10 is provided with an annular groove 704. One end of the special-shaped trigger rod 702 is fixed in the annular groove 704 and is located in the gap 14 between the moving plate 4 and the static plate 3. The other end of the special-shaped trigger rod 702 extends to contact the constraint screw 701 and the first position switch 703. The special-shaped trigger rod 702 can be made of hard steel wire, which is bent into a "9" shape. The upper end of the steel wire is clamped in the annular groove on the threaded inner sleeve 10, and can rotate with the threaded inner sleeve at the beginning; when the lower end of the steel wire contacts the restraining screw, the restraining screw generates resistance to it, and the steel wire does not rotate with the threaded inner sleeve, but rotates relative to the threaded inner sleeve in the annular groove.

[0045] Embodiment 2, as Figure 1 As shown, an intelligent channel selector for a grain depot, the air intake mechanism 6 includes an air intake pipe 601 and an air intake connector 602. The air intake connector 602 can adopt a rubber sleeve or a quick connector. The air intake connector 602 is fixed on the annular pad 15. The air intake pipe 601 is connected to the air intake connector 602. A first sealing ring 603 is provided at the connection between the air intake connector 602 and the stator 3 to ensure the sealing of the connection between the air intake connector and the stator.

[0046] Furthermore, the air outlet mechanism 5 includes an air outlet pipe 501 and an air outlet connector 502. The air outlet connector 502 can adopt a rubber sleeve or a quick connector. The air outlet connector 502 is fixed on the moving disk 4. One end of the air outlet pipe 501 is connected to the air outlet connector 502, and the other end is connected to a rotary connector 503 arranged on the box body 1. A sealing ring 504 is provided on the outer periphery of the air inlet end of the air outlet connector 502. The sealing ring 504 is located between the static disk 3 and the moving disk 4 to ensure the sealing between the air outlet mechanism 5 and the corresponding air inlet mechanism 6 when the two are connected.

[0047] Further, if Figure 2 , 3As shown, the locking mechanism 8 includes a zero position disk 801 and a position disk 802. The zero position disk 801 and the position disk 802 are both fixedly connected to the outer circumference of the moving disk 4, and the zero position disk 801 is located in front of the position disk 802. The central axis of the position disk 802 and the central axis of the zero position disk 801 coincide with the central axis of the moving disk 4 to ensure that the three rotate synchronously. At least 45 first female teeth 803 are evenly distributed on the outer circumference of the position disk 802. The number of first female teeth is not less than the number of air intake mechanisms, so that each air intake mechanism can be found during the positioning process. The position disk 802 is a circular plate with 46 female teeth evenly distributed on its circumference. It corresponds to the 45 air intake holes and 1 zero point on the static disk. At least one second female tooth 804 is provided on the outer circumference of the zero position disk 801. Preferably, the zero position disk has the same shape as the position disk, and there is only one female tooth on its circumference, which corresponds to the zero point on the static disk. The first female tooth 803 and the second female tooth 804 are respectively matched with the position-seeking trigger mechanism 9. The signal transmission of the position-seeking trigger mechanism 9 triggered by the first female tooth 803 and the second female tooth 804 is independently performed.

[0048] The other structures are the same as those in Example 1.

[0049] Embodiment 3, as Figure 4 As shown, an intelligent channel selector for a grain depot, the positioning trigger mechanism 9 includes a double pawl assembly and a position switch assembly, the double pawl assembly is rotationally connected to the static plate 3 through a rotating shaft 901, the position switch assembly is fixed on the static plate 3, one end of the double pawl assembly is matched with the first female tooth 803 and the second female tooth 804 respectively, and the other end is connected to the static plate 3 through a spring 902, and one end of the double pawl assembly connecting spring 902 corresponds to the corresponding trigger position of the position switch assembly. When the connecting spring 902 pulls the double pawl assembly downward, the double pawl assembly touches the trigger position, which is a signal, and the position switch assembly transmits the signal to the counter in the controller in sequence for counting.

[0050] Further, the double pawl assembly includes a first pawl 903 and a second pawl 904, which are coaxially rotatably arranged on the static disk, the first pawl 903 cooperates with the first female tooth 803, and the second pawl 904 cooperates with the second female tooth 804, and the position switch assembly includes a front position switch 905 and a rear position switch 906, the first pawl 903 corresponds to the rear position switch 906, and the second pawl 904 corresponds to the front position switch 905. When seeking a position, the control system reads the action signal of the rear position switch 906, and when returning to zero, the control system reads the action signal of the front position switch 905.

[0051] The other structures are the same as those in Example 2.

[0052] Embodiment 4: A channel selection method of the intelligent channel selector for a grain depot as in Embodiment 3, comprising the following steps:

[0053] S1: Zero position calibration: The second pawl 904 is inserted into the second female tooth 804 of the zero position disk 801, and the second pawl 904 contacts the front position switch 905. The controller reads the action signal of the front position switch 905, and the movable disk 4 is at the zero position; 45 air intake mechanisms are numbered, and it is assumed that the Nth air intake mechanism 6 is connected to the air outlet mechanism 5, and N is the number of air intake mechanisms 6 (1≤N≤45, and N is a positive integer); the number of positions of the air intake mechanism 6 is set to N in the counter in the controller, and the device is started; Fig. 9 , 10 shown.

[0054] S2: Unlocking: The driving device 2 rotates counterclockwise, and the threaded inner sleeve 10, the crank arm 12 and the special-shaped trigger rod 702 rotate synchronously with the driving device 2. At this time, the crank arm 12 does not contact the transmission screw 13. During the rotation process, since the pawl assembly has a certain friction resistance on the movable plate 4, the movable plate 4 does not rotate but is driven by the threaded outer sleeve 11 to move axially in the direction away from the static plate 3. When the crank arm 12 contacts the transmission screw 13 and there is enough clearance between the sealing ring 504 and the static plate 3, the special-shaped trigger rod 702 contacts the constraint screw 701, and the special-shaped trigger rod 702 stops rotating. The movable plate 4 is unlocked, that is, when it rotates at the next moment, the movable plate can rotate. Fig.11 , 12 shown.

[0055] S3: Positioning: The threaded inner sleeve 10, the threaded outer sleeve 11, the crank arm 12 and the movable disk 4 continue to rotate counterclockwise synchronously, and the position disk 802 on the movable disk 4 triggers the first ratchet 903 to swing, thereby triggering the rear position switch 906 to operate. The normally open contact of the rear position switch 906 closes once each time the first ratchet 903 swings downward, and sends a signal. The rear position switch 906 transmits a signal to the counter. When the number of signals received by the counter is equal to the set number N of positions of the air intake mechanism 6, the air intake mechanism 6 at the Nth position is connected to the air outlet mechanism 5, and then the controller controls the drive device 2 to rotate clockwise; Fig.13 , 14 shown.

[0056] S4: Locking: The movable disk 4 is locked and stationary by the first female tooth 803 on the position disk 802 and the first pawl 903, and the driving device 2 continues to rotate clockwise, and the movable disk 4 is axially moved toward the direction close to the static disk 3 through the threaded inner sleeve 10 and the threaded outer sleeve 11, and the special-shaped trigger rod 702 loses its constraint and rotates synchronously with the threaded inner sleeve 10, and the sealing ring 18 is compressed to seal the movable disk 4 and the static plate 3. When the sealing requirement is met, the special-shaped trigger rod 702 triggers the first position switch 703 to act, and the first position switch 703 transmits a signal to the controller, and the controller controls the driving device 2 to stop rotating; Fig.15 , 16 shown.

[0057] S5: Return to zero: If there is a power outage or the device status cannot be identified or does not work, the second pawl 904 is inserted into the second female tooth 804 of the zero position disk 801, and the second pawl 904 contacts the front position switch 905, and the movable disk 4 is at the zero position, and the lock enters the locked state. Fig. 9 , 10 shown.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent channel selector for a grain depot, comprising a housing (1) and a controller, characterized in that: The housing (1) is provided with a driving device (2), a static disk (3) and a moving disk (4); the driving device (2) and the static disk (3) are fixedly arranged in the housing (1); the moving disk (4) cooperates with the static disk (3) and is connected to the driving device (2); an air outlet mechanism (5) is provided on the dynamic disk (4); an air intake mechanism (6) is provided on the static disk (3); the air outlet mechanism (5) corresponds to the air intake mechanism (6); a stop trigger mechanism (7) is provided between the dynamic disk (4) and the static disk (3); a locking mechanism (8) is provided on the dynamic disk (4); the locking mechanism (8) corresponds to a positioning trigger mechanism (9) arranged on the static disk (3); the stop trigger mechanism (7), the positioning trigger mechanism (9) and the driving device (2) are all connected to a controller; The output shaft of the driving device (2) is provided with a threaded inner sleeve (10) and a crank arm (12), the threaded inner sleeve (10) and the crank arm (12) rotate synchronously with the output shaft of the driving device (2), a threaded outer sleeve (11) is fixedly provided at the center of the moving plate (4), the threaded inner sleeve (10) is threadedly connected to the threaded outer sleeve (11), a transmission screw (13) is provided on one side of the threaded outer sleeve (11), the transmission screw (13) is threadedly connected to the moving plate (4), and the crank arm (12) corresponds to the transmission screw (13); The stop trigger mechanism (7) comprises a restraining screw (701), a special-shaped trigger rod (702) and a first position switch (703); the restraining screw (701) is arranged on the static disk (3) and the free end of the restraining screw (701) extends into the gap (14) between the dynamic disk (4) and the static disk (3); an annular groove (704) is arranged on the threaded inner sleeve (10); one end of the special-shaped trigger rod (702) is fixed in the annular groove (704) and the other end is extended to contact the restraining screw (701) and the first position switch (703); The locking mechanism (8) comprises a zero position disk (801) and a position disk (802), wherein the zero position disk (801) and the position disk (802) are both fixedly connected to the movable disk (4), and the zero position disk (801) is located in front of the position disk (802), and the central axis of the position disk (802) and the central axis of the zero position disk (801) both coincide with the central axis of the movable disk (4); At least 45 first female teeth (803) are evenly distributed on the outer circumference of the position disk (802), and at least one second female tooth (804) is provided on the outer circumference of the zero position disk (801), and the first female teeth (803) and the second female teeth (804) are respectively matched with the position-seeking trigger mechanism (9); The positioning trigger mechanism (9) comprises a double pawl assembly and a position switch assembly, wherein the double pawl assembly is rotationally connected to the static disk (3) via a rotating shaft (901), and the position switch assembly is fixed on the static disk (3), one end of the double pawl assembly is respectively matched with the first female tooth (803) and the second female tooth (804), and the other end is connected to the static disk (3) via a spring (902), and one end of the double pawl assembly connecting spring (902) corresponds to the triggering position of the position switch assembly; The double pawl assembly comprises a first pawl (903) and a second pawl (904), the first pawl (903) cooperates with the first female tooth (803), and the second pawl (904) cooperates with the second female tooth (804); the position switch assembly comprises a front position switch (905) and a rear position switch (906), the first pawl (903) corresponds to the rear position switch (906), and the second pawl (904) corresponds to the front position switch (905).

2. The intelligent channel selector for grain depot according to claim 1 is characterized in that: An annular pad (15) is provided at the rear of the stationary disk (3), 45 air intake mechanisms (6) are arranged circumferentially on the annular pad (15), an air outlet mechanism (5) is provided on the moving disk (4), and the air intake mechanism (6) passes through the stationary disk (3) and corresponds to the air outlet mechanism (5).

3. The intelligent channel selector for grain depot according to claim 2 is characterized in that: The air intake mechanism (6) comprises an air intake pipe (601) and an air intake connector (602); the air intake connector (602) is fixed on the annular backing plate (15); the air intake pipe (601) is connected to the air intake connector (602); and a first sealing ring (603) is provided at the connection between the air intake connector (602) and the stator (3).

4. The intelligent channel selector for grain depot according to claim 3 is characterized in that: The air outlet mechanism (5) comprises an air outlet pipe (501) and an air outlet joint (502); the air outlet joint (502) is fixed on the moving disk (4); one end of the air outlet pipe (501) is connected to the air outlet joint (502), and the other end is connected to a rotary joint (503) provided on the box body (1); a sealing ring (504) is provided on the outer periphery of the air inlet end of the air outlet joint (502); the sealing ring (504) is located between the stationary disk (3) and the moving disk (4).

5. A channel selection method for the intelligent channel selector for a grain depot as claimed in claim 4, characterized in that: The steps include: S1: Zero position calibration: The second ratchet (904) is inserted into the second female tooth (804) of the zero position disk (801), the second ratchet (904) contacts the front position switch (905), and the movable disk (4) is located at the zero position; the Nth air intake mechanism (6) is connected to the air outlet mechanism (5), N is the number of air intake mechanisms (6), the number of positions of the air intake mechanisms (6) is set to N in the counter in the controller, and the device is started; S2: unlocking: the driving device (2) rotates counterclockwise, and the threaded inner sleeve (10), the crank arm (12) and the special-shaped trigger rod (702) rotate synchronously with the driving device (2). At this time, the crank arm (12) does not contact the transmission screw (13). Since the pawl assembly has a certain friction resistance on the movable plate (4), the movable plate (4) does not rotate but is driven by the threaded outer sleeve (11) to move axially in a direction away from the stationary plate (3). When there is a sufficient gap between the sealing ring (504) and the stationary plate (3), the crank arm (12) contacts the transmission screw (13), the special-shaped trigger rod (702) contacts the constraint screw (701), the special-shaped trigger rod (702) stops rotating, and the movable plate (4) is unlocked; S3: Positioning: The threaded inner sleeve (10), the threaded outer sleeve (11), the crank arm (12) and the movable disk (4) continue to rotate counterclockwise synchronously, and the position disk (802) on the movable disk (4) triggers the first ratchet (903) to swing, thereby triggering the rear position switch (906) to operate. The normally open contact of the rear position switch (906) closes once each time the first ratchet (903) moves, and the rear position switch (906) transmits a signal to the counter. When the number of signals received by the counter is equal to the set number N of positions of the air intake mechanism (6), the air intake mechanism (6) at the Nth position is connected to the air outlet mechanism (5), and then the controller controls the driving device (2) to rotate clockwise; S4: Locking: The moving disk (4) is locked and stationary by the first female tooth (803) on the position disk (802) and the first ratchet (903), and the driving device (2) continues to rotate clockwise, and the moving disk (4) is axially moved in a direction close to the stationary disk (3) through the threaded inner sleeve (10) and the threaded outer sleeve (11), and the special-shaped trigger rod (702) loses its constraint and rotates synchronously with the threaded inner sleeve (10), and the sealing ring (18) is compressed to seal between the moving disk (4) and the stationary plate (3). When the sealing requirement is met, the special-shaped trigger rod (702) triggers the first position switch (703) to operate, and the first position switch (703) transmits a signal to the controller, and the controller controls the driving device (2) to stop rotating; S5: Return to zero: If there is a power outage or the device status cannot be identified, the second ratchet (904) is inserted into the second female tooth (804) of the zero position disk (801), the second ratchet (904) contacts the front position switch (905), the moving disk (4) is located at the zero position, and the lock enters the locked state.

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