Intelligent quantitative mixing and uniform four-port sample dividing machine

Abstract

The application relates to an intelligent quantitative mixing and dividing four-port sample divider, which comprises a rack, a shell, a sample dividing cylinder rotatably connected in the shell, a rotary driving device for driving the sample dividing cylinder to rotate, a plurality of discharging channels arranged on the shell, a plurality of sample dividing cavities arranged in the sample dividing cylinder and a plurality of discharging ports, the plurality of discharging ports are respectively connected with the plurality of sample dividing cavities and the plurality of discharging channels, a plurality of baffle plates one are slidably connected in the sample dividing cylinder, the baffle plates one are used for adjusting the size of the cavity port of the corresponding sample dividing cavity when sliding, an annular push plate is slidably connected in the sample dividing cylinder, the annular push plate is located on the side of the plurality of baffle plates one which is away from the rotary driving device, a first driving mechanism for controlling the sliding of the annular push plate is arranged in the sample dividing cylinder, and a second driving mechanism for driving the baffle plates one to slide away from the rotary driving device is further arranged on the shell. The size of the cavity port of the sample dividing cavity is changed, so that the quantity of the grain falling into the sample dividing cavity is controlled, and the effect of adjusting the grain sample dividing ratio is achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of sample dividers, in particular to an intelligent quantitative mixing and uniform four-port sample divider. BACKGROUND

[0002] After purchasing grain each time, the laboratory in the company needs to mix and sample the grain for inspection. At present, the laboratory basically uses a groove or a Zhongding type sample divider to mix and sample, and the sample dividing efficiency is low, and manual operation is prone to lumbar strain.

[0003] A kind of fixed ratio grain sample divider is disclosed in Chinese patent with publication number CN222144648U, which includes rack, casing, rotary drive device and centrifugal rotation module, the inner cavity of centrifugal rotation module forms centrifugal shell, multiple discharge ports are arranged in the bottom of casing between both ends, and the discharge ports are communicated with the cavity, multiple groups of discharge flow channels corresponding to the discharge ports are arranged in centrifugal rotation module, and both ends of discharge flow channel are penetrated to the outer periphery or edge of centrifugal shell and centrifugal rotation module. By putting grain into centrifugal rotation module, centrifugal rotation module is rotated to divide the grain equally.

[0004] However, the equal division sample ratio of the above-mentioned device cannot be changed, and when the demand for equal division of grain changes, the device cannot be used for sample division operation. SUMMARY

[0005] The application provides an intelligent quantitative mixing and uniform four-port sample divider, which can realize multi-specification mixing and uniform sampling of grain.

[0006] The intelligent quantitative mixing and uniform four-port sample divider provided by the application adopts the following technical scheme:

[0007] An intelligent quantitative mixing and uniform four-port sample divider includes a rack, a casing, a sample dividing cylinder rotatably connected in the casing, a rotary drive device for driving the sample dividing cylinder to rotate, multiple discharge channels arranged on the casing, multiple sample dividing cavities arranged in the sample dividing cylinder, and multiple discharge ports, the multiple discharge ports are respectively communicated with the multiple sample dividing cavities and the multiple discharge channels, multiple baffle plates one are slidably connected in the sample dividing cylinder, the multiple baffle plates one respectively extend into the multiple sample dividing cavities, and the size of the cavity opening of the corresponding sample dividing cavity is adjusted when the baffle plate one slides; an annular push plate is slidably connected in the sample dividing cylinder, the annular push plate is located on the side of the multiple baffle plates one away from the rotary drive device, the annular push plate slides and collides with the multiple baffle plates one to drive the multiple baffle plates one to slide close to the rotary drive device, and a first drive mechanism is arranged in the sample dividing cylinder for controlling the sliding of the annular push plate; a second drive mechanism is further arranged on the casing, and the second drive mechanism is used to drive the baffle plate one to slide away from the rotary drive device.

[0008] Preferably, the rotating driving device comprises a first motor and a planetary reducer, an output shaft of the first motor is connected with an input shaft of the planetary reducer, and an output shaft of the planetary reducer is connected with the sample dividing cylinder.

[0009] Preferably, the first driving mechanism comprises a first one-way bearing, a second one-way bearing, a reciprocating screw rod rotatably connected in the sample dividing cylinder, and a travel switch arranged on the shell, the first one-way bearing and the second one-way bearing are both sleeved on the output shaft of the planetary reducer, the sample dividing cylinder is connected with an outer ring of the first one-way bearing, the reciprocating screw rod is connected with an outer ring of the second one-way bearing, the annular push plate is threadedly connected on the reciprocating screw rod, the travel switch is located on a side of the annular push plate away from the planetary reducer, and the travel switch is in contact with the annular push plate in a state that the machine is not started; the output shaft of the planetary reducer drives the sample dividing cylinder to rotate in a forward rotation mode, and the output shaft of the planetary reducer drives the reciprocating screw rod to rotate in a reverse rotation mode.

[0010] Preferably, the second driving mechanism comprises connecting rods arranged on the baffles, a first electric cylinder arranged on the frame, a matching groove arranged on an output shaft of the first electric cylinder, a magnetic proximity switch arranged on the shell, and a magnet arranged on one of the connecting rods, and end portions of the connecting rods all extend out of the sample dividing cylinder; the output shaft of the first electric cylinder extends into the shell and is located above the sample dividing cylinder, a telescopic path of the output shaft of the first electric cylinder partially overlaps with a rotation path of the connecting rods; when the connecting rod with the magnet rotates to the highest position, the magnetic proximity switch senses the magnet.

[0011] Preferably, a plurality of sliding grooves are arranged in the sample dividing cylinder, and a plurality of the baffles are respectively and slidingly connected in the sliding grooves; and the connecting rods are threadedly connected on the baffles.

[0012] Preferably, the frame is further provided with a weighing cabin for weighing the grains, the weighing cabin is located above the shell, an opening one is arranged at a bottom of the weighing cabin, and a baffle two is rotatably connected on the weighing cabin; a second motor is arranged on the weighing cabin, and a resisting rod is arranged on an output shaft of the second motor; when the second motor rotates, the baffle two can be pressed on the weighing cabin by the resisting rod to block the opening one; a material falling pipe is connected between the weighing cabin and the shell, one end of the material falling pipe is used for receiving the grains falling from the opening one, and the other end of the material falling pipe extends into the sample dividing cylinder.

[0013] Preferably, the frame is provided with a stirring cabin, the weighing cabin is located above the stirring cabin, an opening two is arranged on the stirring cabin, and the opening two is opposite to a feeding port of the weighing cabin; a stirring screw rod is rotatably connected in the stirring cabin, a third motor is arranged on the frame to drive the stirring screw rod to rotate, a baffle three is slidingly connected in the stirring cabin to block the opening two, and a second electric cylinder is arranged on the frame to drive the baffle three to slide.

[0014] Preferably, four guide pieces are arranged on the inner wall of the sample dividing cylinder, and the four guide pieces are located between the four sample dividing cavities, and the guide pieces are used for guiding the grain into the sample dividing cavity adjacent to the guide pieces when the sample dividing cylinder rotates.

[0015] Preferably, a guide rod is arranged on the shell and extends into the sample dividing cylinder; the annular push plate comprises a connecting seat connected with the reciprocating wire rod, and the connecting seat is slidably connected with the guide rod; the annular push plate further comprises a push plate body sleeved and rotatably arranged on the connecting seat, and the push plate body is connected with the four guide pieces; the four baffles are located on the movement path of the push plate body, and the push plate body rotates relative to the connecting seat under the guidance of the four guide pieces when the push plate body moves close to the first motor.

[0016] The technical effects of the present application mainly embody in the following aspects:

[0017] 1. The present application controls the amount of grain falling into the sample dividing cavity by changing the size of the cavity opening, so as to achieve the effect of adjusting the grain sample dividing ratio;

[0018] 2. The present application uses the forward and reverse rotation of the output bearing of the planetary reducer to control the movement of the sample dividing cylinder and the annular push plate respectively;

[0019] 3. The present application sets the stirring cabin and the weighing cabin to realize the precise weight of the grain. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic view of the front of the sample dividing machine.

[0021] Figure 2 is a structural schematic view of the back of the sample dividing machine.

[0022] Figure 3 is a structural schematic view of the weighing cabin, the stirring cabin and related components.

[0023] Figure 4 is Figure 3 is a sectional view of the stirring cabin and related components along the A-A line.

[0024] Figure 5 is a structural schematic view of the weighing cabin and related components.

[0025] Figure 6 is a structural schematic view of the shell, the material falling pipe and other components when a connecting rod is located in a matching groove.

[0026] Figure 7 is Figure 6 is a sectional view of the components along the B-B line.

[0027] Figure 8Is the structure diagram of the sample cylinder, ring-shaped push plate.

[0028] Figure 9 Is the structure diagram of the sample cylinder, ring-shaped push plate from another angle.

[0029] Figure 10 Is the structure diagram of the sample cylinder.

[0030] Figure 11 Is Figure 7 The local enlarged view at C in the middle.

[0031] Figure 12 Is Figure 7 The local enlarged view at D in the middle.

[0032] Reference signs: 11, rack; 12, shell; 13, sample cylinder; 14, feeding channel; 15, sample cavity; 161, first feeding port; 162, second feeding port; 163, third feeding port; 164, fourth feeding port; 17, baffle one; 18, ring-shaped push plate; 181, connecting seat; 182, push plate body; 19, sliding groove; 20, avoiding groove; 2, rotary driving device; 21, first motor; 22, planetary reducer; 3, first driving mechanism; 31, first one-way bearing; 32, second one-way bearing; 33, reciprocating screw rod; 34, travel switch; 4, second driving mechanism; 41, connecting rod; 42, first electric cylinder; 43, magnetic proximity switch; 44, magnet; 51, weighing cabin; 52, opening one; 53, baffle two; 54, second motor; 55, stop rod; 56, blanking pipe; 61, stirring cabin; 62, opening two; 63, stirring screw rod; 64, third motor; 65, baffle three; 66, second electric cylinder; 7, microcomputer; 8, guide piece; 9, guide rod. DETAILED DESCRIPTION

[0033] The application will be further described in detail below with reference to the drawings, so that the technical scheme of the application is easier to understand and master.

[0034] With reference to Figure 1-4 , the intelligent quantitative mixing four-port sample divider of the embodiment comprises a rack 11, the top of the rack 11 is provided with a stirring cabin 61, and a hopper for feeding is arranged on the top of the stirring cabin 61. A stirring screw rod 63 is rotationally connected in the stirring cabin 61, a third motor 64 for driving the stirring screw rod 63 to rotate is arranged on the rack 11, and the output shaft of the third motor 64 is connected with the stirring screw rod 63. After the grain is fed into the stirring cabin 61 through the hopper, the third motor 64 is started to drive the stirring screw rod 63 to rotate to stir and mix the grain.

[0035] With reference to Figure 1-4Inside the mixing chamber 61, a baffle 65 for sealing the opening 62 is slidably connected to the output shaft of the third motor 64 in the axial direction. A second electric cylinder 66 is installed on the frame 11. The second electric cylinder 66 and the third motor 64 are located on both sides of the mixing chamber 61 respectively. One end of the baffle 65 extends out of the mixing chamber 61 and is connected to the output shaft of the second electric cylinder 66.

[0036] Reference Figure 1 , Figure 3 A weighing chamber 51 is also installed in the middle of the frame 11. The weighing chamber 51 is located below the mixing chamber 61 and is used to weigh the grain. The second opening 62 is directly opposite the feeding port at the top of the weighing chamber 51. Grain falling from the second opening 62 will directly enter the weighing chamber 51.

[0037] Reference Figure 2 , Figure 5 The weighing chamber 51 has an opening 52 at its bottom, and a baffle 53 is rotatably connected to the weighing chamber 51. A second motor 54 is installed on the weighing chamber 51, and a stop rod 55 is installed on the output shaft of the second motor 54. When the second motor 54 rotates, the stop rod 55 presses the baffle 53 against the weighing chamber 51, thereby blocking the opening 52.

[0038] Reference Figure 1 , Figure 6 and Figure 7 A housing 12 is mounted at the bottom of the frame 11, located below the weighing chamber 51. A sample distribution cylinder 13 is rotatably connected inside the housing 12. A rotary drive device 2 for driving the sample distribution cylinder 13 to rotate is mounted on the frame 11. The rotary drive device 2 includes a first motor 21 and a planetary reducer 22. The output shaft of the first motor 21 is connected to the input shaft of the planetary reducer 22, and the output shaft of the planetary reducer 22 is connected to the sample distribution cylinder 13.

[0039] Reference Figure 1 , Figure 2 , Figure 6 and Figure 7 The housing 12 has four feeding channels 14, which are not interconnected. The frame 11 also has four baskets, which are respectively positioned opposite the bottom openings of the four feeding channels 14. The inner wall of the sample distribution cylinder 13 has four sample distribution chambers 15, which are arranged in a ring on the sample distribution cylinder 13.

[0040] Reference Figure 7-10The sample dividing cylinder 13 is provided with four discharge ports, namely a first discharge port 161, a second discharge port 162, a third discharge port 163 and a fourth discharge port 164. The four discharge ports are communicated with the four sample dividing cavities 15 and the four discharge channels 14. The weighing cabin 51 is connected with the shell 12 through a discharge pipe 56. One end of the discharge pipe 56 is used for receiving the grain falling from the opening 52, and the other end of the discharge pipe 56 extends into the sample dividing cylinder 13.

[0041] Referring to Figure 7-10 The sample dividing cylinder 13 is provided with four discharge ports, namely a first discharge port 161, a second discharge port 162, a third discharge port 163 and a fourth discharge port 164. The four discharge ports are communicated with the four sample dividing cavities 15 and the four discharge channels 14. The weighing cabin 51 is connected with the shell 12 through a discharge pipe 56. One end of the discharge pipe 56 is used for receiving the grain falling from the opening 52, and the other end of the discharge pipe 56 extends into the sample dividing cylinder 13.

[0042] Referring to Figure 7 、 Figure 8 、 Figure 10 The sample dividing cylinder 13 is provided with four discharge ports, namely a first discharge port 161, a second discharge port 162, a third discharge port 163 and a fourth discharge port 164. The four discharge ports are communicated with the four sample dividing cavities 15 and the four discharge channels 14. The weighing cabin 51 is connected with the shell 12 through a discharge pipe 56. One end of the discharge pipe 56 is used for receiving the grain falling from the opening 52, and the other end of the discharge pipe 56 extends into the sample dividing cylinder 13.

[0043] Referring to Figure 7 、 Figure 8 、 Figure 11 The sample dividing cylinder 13 is provided with four discharge ports, namely a first discharge port 161, a second discharge port 162, a third discharge port 163 and a fourth discharge port 164. The four discharge ports are communicated with the four sample dividing cavities 15 and the four discharge channels 14. The weighing cabin 51 is connected with the shell 12 through a discharge pipe 56. One end of the discharge pipe 56 is used for receiving the grain falling from the opening 52, and the other end of the discharge pipe 56 extends into the sample dividing cylinder 13.

[0044] Referring to Figure 7 、 Figure 11, the first driving mechanism 3 for controlling the sliding of the connecting seat 181 is arranged in the sample cylinder 13. The first driving mechanism 3 comprises a first one-way bearing 31, a second one-way bearing 32, a reciprocating screw rod 33 rotatably connected in the sample cylinder 13, and a travel switch 34 mounted on the shell 12.

[0045] With reference to Figure 7 , Figure 11 The first one-way bearing 31 and the second one-way bearing 32 are both sleeved on the output shaft of the planetary reducer 22. The sample cylinder 13 is sleeved on the outer ring of the first one-way bearing 31, the reciprocating screw rod 33 is sleeved on the outer ring of the second one-way bearing 32, and the reciprocating screw rod 33 is sleeved with a bellows on the surface. The connecting seat 181 is threadedly connected to the reciprocating screw rod 33. When the output shaft of the planetary reducer 22 rotates in the positive direction, the sample cylinder 13 is driven to rotate; when the output shaft of the planetary reducer 22 reverses, the reciprocating screw rod 33 is driven to rotate.

[0046] With reference to Figure 7 , Figure 11 The travel switch 34 is located on the side of the connecting seat 181 away from the planetary reducer 22. When the machine is not turned on, the annular push plate 18 is located at the position farthest away from the planetary reducer 22, and the connecting seat 181 is in contact with the travel switch 34. When the first motor 21 is started to reverse and drive the reciprocating screw rod 33 to rotate, the annular push plate 18 is driven to reciprocate, and when the connecting seat 181 moves to re-contact the travel switch 34, the first motor 21 will stop reversing.

[0047] With reference to Figure 7 , Figure 12 The shell 12 is further provided with a second driving mechanism 4 for driving the baffle one 17 to slide away from the planetary reducer 22. The second driving mechanism 4 comprises connecting rods 41 threadedly connected to the baffle one 17, and a first electric cylinder 42 mounted on the rack 11. The sample cylinder 13 is further provided with four avoiding grooves 20, and the four avoiding grooves 20 are respectively communicated with four sliding grooves 19. The four connecting rods 41 respectively pass through the four avoiding grooves 20 and extend into the discharge channel 14 closest to the first motor 21.

[0048] With reference to Figure 12 The output shaft of the first electric cylinder 42 extends into the discharge channel 14 of the shell 12 closest to the first motor 21 and is located above the sample cylinder 13. The extension path of the output shaft of the first electric cylinder 42 partially overlaps with the rotation path of the connecting rod 41. The output shaft of the first electric cylinder 42 is located on the side of the rotation path of the connecting rod 41 close to the planetary reducer 22.

[0049] With reference to Figure 12The second driving mechanism 4 further comprises a magnetic proximity switch 43 arranged on the housing 12, and a magnet 44 arranged on one of the connecting rods 41. When the connecting rod 41 with the magnet 44 rotates to the highest position, the magnetic proximity switch 43 senses the magnet 44, and at this time, the magnetic proximity switch 43 is located on the side of the magnet 44 close to the planetary reducer 22, and the connecting rod 41 with the magnet 44 is located on the extension path of the output shaft of the first electric cylinder 42.

[0050] With reference to Figure 1 and Figure 2 The microcomputer 7 is arranged on the frame 11, and the start and stop of the first motor 21, the first electric cylinder 42, the second motor 54, the third motor 64 and the second electric cylinder 66 are controlled by the microcomputer 7. The weight sensor in the weighing cabin 51 transmits the grain weight data to the microcomputer 7 in real time. The first electric cylinder 42 is provided with an encoder, and the microcomputer 7 can control the extension length of the output shaft of the first electric cylinder 42 through the encoder.

[0051] With reference to Figure 1-12 The operation steps of the grain sample divider are as follows:

[0052] Before the grain sample divider is started, the grain sample ratio and the weight of the grain to be sampled are set on the microcomputer 7, and the grain is put into the stirring cabin 61. The microcomputer 7 starts the first motor 21 and the first electric cylinder 42 according to the data. First, the output shaft of the first motor 21 reversely drives the reciprocating screw rod 33 to rotate, and when the reciprocating screw rod 33 rotates, it drives the connecting seat 181 and the push plate body 182 to move, so that the push plate body 182 pushes the four baffles one 17 to move to reset, and the four baffles one 17 move to the initial position. When the connecting seat 181 moves to contact the travel switch 34 again, the travel switch 34 sends a signal to the microcomputer 7, and the microcomputer 7 controls the first motor 21 to stop reversing.

[0053] Then the first motor 21 drives the sample cylinder 13 to rotate in the positive direction, and in this process, when the connecting rod 41 with the magnet 44 rotates to the highest position, the magnetic proximity switch 43 senses and sends a signal to the microcomputer 7, and the microcomputer 7 controls the first motor 21 to stop rotating. At this time, the connecting rod 41 with the magnet 44 is located on the extension path of the output shaft of the first electric cylinder 42. Then the microcomputer 7 controls the output shaft of the first electric cylinder 42 to extend, so that the output shaft of the first electric cylinder 42 extends to push the connecting rod 41 and the baffle one 17 to slide, so that the baffle one 17 adjusts the size of the cavity opening corresponding to the sample cavity 15.

[0054] After the pushing of one connecting rod 41 is completed, the output shaft of the first electric cylinder 42 is retracted, the first motor 21 is started to rotate the sample cylinder 13 by 90 degrees, so that the next connecting rod 41 is rotated to the extension and retraction path of the output shaft of the first electric cylinder 42, the output shaft of the first electric cylinder 42 can be extended to push the connecting rod 41 and the baffle one 17 to slide, and the size of the next sample chamber 15 is adjusted. Then the above steps are repeated twice to adjust the size of the four sample chambers 15.

[0055] By changing the size of the four sample chambers 15, the amount of grain falling into the four sample chambers 15 per unit time can be changed under the condition that the rotation speed of the sample cylinder 13 is constant, thereby achieving the effect of adjustable grain sampling ratio.

[0056] After the position of the four baffle one 17 is adjusted, the microcomputer 7 controls the first motor 21 and the third motor 64 to start, so that the sample cylinder 13 is always in a uniform rotation state, and the stirring screw 63 rotates to stir and push the grain. After the grain is mixed, the microcomputer 7 controls the output shaft of the second electric cylinder 66 to retract so that the baffle three 65 no longer blocks the opening two 62, and the grain in the stirring cabin 61 will fall into the weighing cabin 51 under the pushing action of the stirring screw 63. After the weight of the grain falling into the weighing cabin 51 meets the requirements, the microcomputer 7 controls the output shaft of the second electric cylinder 66 to extend so that the baffle three 65 blocks the opening two 62 to prevent the grain from continuing to fall.

[0057] Then the microcomputer 7 starts the second motor 54, and the rotation of the output shaft of the second motor 54 will rotate the stopper 55. Without the resistance of the stopper 55, the grain in the weighing cabin 51 will push away the baffle two 53 and fall into the discharge pipe 56. Then the grain falls into the sample cylinder 13 through the discharge pipe 56, and the grain falling into the sample cylinder 13 will fall into the four sample chambers 15, and then fall into the four discharge passages 14 through the first discharge port 161, the second discharge port 162, the third discharge port 163 and the fourth discharge port 164, and then fall into the four baskets through the guidance of the four discharge passages 14, thereby completing the proportional sampling of the grain.

[0058] Of course, the above is only a typical example of the present application, in addition to this, the present application can have other various specific embodiments, and any technical solutions formed by equivalent replacement or equivalent transformation shall fall within the scope of the present application.

Claims

1. An intelligent quantitative mixing and uniformity four-port sample divider, comprising a frame (11), a shell (12), a sample dividing cylinder (13) rotatably connected in the shell (12), a rotary driving device (2) for driving the sample dividing cylinder (13) to rotate, a plurality of discharging channels (14) provided on the shell (12), a plurality of sample dividing cavities (15) provided in the sample dividing cylinder (13), and a plurality of discharging ports, wherein each of the plurality of discharging ports is connected with one of the plurality of sample dividing cavities (15) and one of the plurality of discharging channels (14). A plurality of baffle plates (17) are slidably connected in the sample dividing cylinder (13), and the baffle plates (17) extend into a plurality of sample dividing cavities (15) respectively, and the size of the cavity opening of the corresponding sample dividing cavity (15) is adjusted when the baffle plates (17) slide; an annular push plate (18) is slidably connected in the sample dividing cylinder (13), and the annular push plate (18) is located on the side of the baffle plates (17) away from the rotary driving device (2), and the annular push plate (18) slides and collides with the baffle plates (17) to drive the baffle plates (17) to slide close to the rotary driving device (2), and a first driving mechanism (3) for controlling the sliding of the annular push plate (18) is arranged in the sample dividing cylinder (13); a second driving mechanism (4) is further arranged on the shell (12), and the second driving mechanism (4) is used to drive the baffle plates (17) to slide away from the rotary driving device (2); the rotary driving device (2) comprises a first motor (21) and a planetary reducer (22), the output shaft of the first motor (21) is connected with the input shaft of the planetary reducer (22), and the output shaft of the planetary reducer (22) is connected with the sample dividing cylinder (13); the first driving mechanism (3) comprises a first one-way bearing (31), a second one-way bearing (32), a reciprocating screw rod (33) rotatably connected in the sample dividing cylinder (13), a travel switch (34) arranged on the shell (12), the first one-way bearing (31) and the second one-way bearing (32) are both sleeved on the output shaft of the planetary reducer (22), the sample dividing cylinder (13) is connected with the outer ring of the first one-way bearing (31), the reciprocating screw rod (33) is connected with the outer ring of the second one-way bearing (32), the annular push plate (18) is threadedly connected on the reciprocating screw rod (33), the travel switch (34) is located on the side of the annular push plate (18) away from the planetary reducer (22), and the travel switch (34) is in contact with the annular push plate (18) in the state that the machine is not started; the output shaft of the planetary reducer (22) drives the sample dividing cylinder (13) to rotate in the positive direction, and the output shaft of the planetary reducer (22) drives the reciprocating screw rod (33) to rotate in the reverse direction; the second driving mechanism (4) comprises a connecting rod (41) arranged on the baffle plate (17), a first electric cylinder (42) arranged on the rack (11), a magnetic proximity switch (43) arranged on the shell (12), a magnet (44) arranged on one of the connecting rods (41), and the ends of the plurality of connecting rods (41) extend out of the sample dividing cylinder (13); the output shaft of the first electric cylinder (42) extends into the shell (12) and is located above the sample dividing cylinder (13), and the extension path of the output shaft of the first electric cylinder (42) partially overlaps with the rotation path of the connecting rod (41); when the connecting rod (41) with the magnet (44) rotates to the highest position, the magnetic proximity switch (43) senses the magnet (44).

2. The intelligent quantitative mixing and uniformity four-port sample divider according to claim 1, characterized in that: A plurality of sliding grooves (19) are formed in the sample dividing cylinder (13), and a plurality of the first baffles (17) are respectively and slidingly connected in the plurality of sliding grooves (19). The connecting rod (41) is threadedly connected to the first baffle (17).

3. The intelligent quantitative mixing and uniformity four-port sample divider according to claim 1, characterized in that: The frame (11) is further provided with a weighing cabin (51) for weighing the grains. The weighing cabin (51) is located above the shell (12). The bottom of the weighing cabin (51) is provided with an opening (52). The weighing cabin (51) is rotatably connected with a second baffle (53). The weighing cabin (51) is provided with a second motor (54). The output shaft of the second motor (54) is provided with a resisting rod (55). When the second motor (54) rotates, the second baffle (53) is pressed on the weighing cabin (51) through the resisting rod (55) to block the opening (52). The weighing cabin (51) and the shell (12) are connected with a falling pipe (56). One end of the falling pipe (56) is used for receiving the grains falling from the opening (52). The other end of the falling pipe (56) extends into the sample dividing cylinder (13).

4. The intelligent quantitative mixing and uniformity four-port sample divider according to claim 3, characterized in that: The frame (11) is provided with a stirring cabin (61). The weighing cabin (51) is located above the stirring cabin (61). The stirring cabin (61) is provided with an opening (62). The opening (62) is opposite to the feeding opening of the weighing cabin (51). The stirring cabin (61) is rotatably connected with a stirring screw (63). The frame (11) is provided with a third motor (64) for driving the stirring screw (63) to rotate. The stirring cabin (61) is slidingly connected with a third baffle (65) for blocking the opening (62). The frame (11) is provided with a second cylinder (66) for driving the third baffle (65) to slide.

5. The intelligent quantitative mixing and uniformity four-port sample divider according to claim 1, characterized in that: The inner wall of the sample dividing cylinder (13) is provided with four guide pieces (8). The four guide pieces (8) are located between the four sample dividing cavities (15). When the sample dividing cylinder (13) rotates, the guide pieces (8) are used for guiding the grains into the sample dividing cavities (15) adjacent to the guide pieces (8).

6. The intelligent quantitative mixing and uniformity four-port sample divider according to claim 5, characterized in that The shell (12) is provided with a guide rod (9) extending into the sample dividing cylinder (13). The annular push plate (18) comprises a connecting seat (181) connected with the reciprocating wire rod (33). The connecting seat (181) is slidingly connected with the guide rod (9). The annular push plate (18) further comprises a push plate body (182) sleeved and rotatably arranged on the connecting seat (181). The push plate body (182) is connected with the four guide pieces (8). The four first baffles (17) are located on the movement path of the push plate body (182). When the push plate body (182) moves close to the first motor (21), the push plate body (182) rotates relative to the connecting seat (181) under the guidance of the four guide rods (9).

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