A grain moisture meter for plant quarantine

Abstract

The invention relates to the technical field of moisture meters, and specifically to a grain moisture meter for plant quarantine, comprising a body and a measuring cup arranged on the body, and also comprising a sleeve ring, wherein the sleeve ring is arranged on the outside of the measuring cup; an outer tube, wherein the outer tube is arranged on the measuring cup and used in conjunction with the sleeve ring; an inner tube, wherein the inner tube is arranged inside the outer tube and used in conjunction with the outer tube; and a plurality of function boards. The grain moisture meter for plant quarantine enables a worker to control the rotation of the function board by using a material dropping unit when measuring the moisture content of the grain, thereby achieving blocking of the bottom of the inner tube and dropping all the grains in the inner tube into the measuring cup, avoiding the dumping of the grains, simplifying the steps, and facilitating reducing the workload of the worker. A rotary squeezing unit is used to drive the inner tube and the function board to move, so as to flatten the grains dropped into the measuring cup and press the grains, thereby making the measurement more accurate.

Description

Technical Field

[0001] The invention relates to the technical field of moisture meters, in particular to a grain moisture meter for plant quarantine. Background Art

[0002] Plant quarantine is a measure to prevent the spread of dangerous plant diseases, insects, weeds and other harmful organisms through legal, administrative and technical means, to ensure the safety of agriculture and forestry, and to promote trade development. Moisture content is one of the most basic measurement items in plant tissue and agricultural product analysis. The moisture content of seeds, fruits, vegetables, feed, etc. is an important standard for identifying quality and judging whether they are suitable for storage. The moisture and dry matter content in plants are important indicators of plant physiological state and maturity. Therefore, grain moisture meters are often used in the work process.

[0003] Grain moisture meter can also be called moisture meter. Grain moisture meter or grain moisture meter is an instrument specially used to measure the moisture content of grain, including several different types such as resistance type, microwave type, infrared type, drying furnace type, etc. Among them, the resistance moisture meter is the most common type. It uses resistance change to measure the moisture content in the material, usually directly inserted into the material for testing; microwave and infrared moisture meters use electromagnetic waves of different frequency bands to measure the electromagnetic field of the material to obtain the proportion of moisture content; drying furnace moisture meter puts the sample into a heated drying chamber, and obtains the moisture content of the material by continuously heating and measuring the weight of the sample. Due to the needs of quarantine work, a cup moisture meter is generally used for measurement. This type of moisture meter is mostly microwave and infrared type;

[0004] When using the cup moisture meter, install the battery and sensor according to the label instructions. After pressing the power button to turn on the instrument, the instrument will automatically calibrate and the display reading will be "0". When measuring, use the cup cover to load the grains and pour them into the measuring cup, so that the measured grains are evenly spread over the measuring cup. Cover the cup cover and slowly press down. When you hear the buzzer sound, the instrument completes a measurement. At this time, the display reading is the moisture content of the measured grains.

[0005] However, we found in actual use that the measuring cup contains cross-set partitions. When the staff uses the cup cover to pour the grains, they need to use the other hand to assist, so as to prevent the grains from spilling out of the measuring cup and to achieve the uniform leveling of the grains. Then they need to cover the cup cover and slowly press down. Not only are the steps cumbersome and increase the workload of the staff, but the staff also need to operate the instrument after their hands touch the grains, which will cause dust and impurities to adhere to the surface of the instrument, which is not conducive to the staff's flexible operation and reduces the work efficiency of the measurement work. For this reason, we propose a grain moisture meter for plant quarantine. Summary of the invention

[0006] A technical problem to be solved by this application is: how to design a grain moisture meter that is easy for staff to operate.

[0007] In order to solve the above technical problems, the embodiment of the present application provides a grain moisture meter for plant quarantine, comprising a body and a measuring cup arranged on the body, and also comprising a collar, wherein the collar is arranged on the outside of the measuring cup;

[0008] An outer tube, which is arranged on the measuring cup and used in conjunction with the collar;

[0009] An inner tube, the inner tube is arranged inside the outer tube and used in conjunction with the outer tube;

[0010] Functional panels, wherein a plurality of the functional panels are provided and the plurality of the functional panels are evenly arranged at the bottom of the inner tube;

[0011] A rotary pressing unit is arranged between the outer tube and the inner tube, and is used to drive the inner tube and the functional plate to move, flatten the grains falling into the measuring cup, and press the grains;

[0012] The dropping unit is arranged on the inner tube and is used to control the rotation of the functional plate, thereby sealing the bottom of the inner tube and dropping all the grains in the inner tube into the measuring cup.

[0013] In some embodiments, the rotary extrusion unit includes a connecting plate arranged on the top of the outer tube, the top of the connecting plate close to the inner tube is chamfered, an extrusion piece connected to the inner tube is arranged on the connecting plate for pressing the grain, a rotating piece is arranged on the outer tube for driving the inner tube to rotate when the inner tube slides, and a positioning piece for locking and positioning is arranged between the outer tube and the ring.

[0014] In some embodiments, the extrusion member includes an annular plate arranged on the outside of the inner tube, and the annular plate is slidably arranged inside the outer tube, a plurality of springs one are evenly arranged on the annular plate, and the two ends of the spring one are respectively connected to the connecting plate and the annular plate, a mounting groove is provided on the outer tube, a plurality of circular grooves are provided on the annular plate, a spring two is provided in each of the circular grooves, a positioning ball engaged with the mounting groove is provided at the end of the spring two, a spring three is provided in the mounting groove, a pressing plate is provided at the end of the spring three, and a plurality of push rods respectively matched with the positioning balls are provided on the pressing plate.

[0015] In some embodiments, the rotating member includes a boss disposed on the annular plate, a guide groove is provided inside the outer tube, and the boss is movably disposed in the guide groove, so that the inner tube rotates left and right when moving downward.

[0016] In some embodiments, the positioning member includes a protruding seat arranged at the bottom of the outer tube, the bottom of the protruding seat close to the measuring cup is chamfered, an annular groove is opened on the protruding seat, an annular boss is arranged on the ring, and the annular groove and the annular boss are interference fit.

[0017] In some embodiments, the blanking unit includes a plurality of positioning rods evenly arranged inside the inner tube, the number of the positioning rods is the same as the number of the functional boards, the positioning rods are each provided with an adjusting member for driving adjacent functional boards to rotate, the positioning rods are each provided with a driving member for driving the adjusting member to work, a control member for synchronously driving multiple driving members to work simultaneously is provided above the measuring cup, and a material guide seat is provided on the top of the positioning rod.

[0018] In some embodiments, the adjusting member includes a support seat arranged at the end of the positioning rod, a main shaft is rotatably arranged on the support seat, a steering seat is arranged on the function plate, the steering seat is arranged on the main shaft, a torsion spring is sleeved on the outer side of the main shaft, and both ends of the torsion spring are respectively connected to the steering seat and the support seat.

[0019] In some embodiments, a rectangular groove is provided on the positioning rod, and the driving member includes a rotating shaft rotatably arranged in the rectangular groove, and an extrusion rod is provided on the rotating shaft. The extrusion rod can be fitted with the functional panel, and an arc-shaped airbag is provided in the rectangular groove for driving the extrusion rod to rotate.

[0020] In some embodiments, the control member includes a plurality of finger airbags respectively arranged on the outside of the outer tube, an annular cavity is arranged on the inner tube, the annular cavity is connected with the plurality of arc-shaped airbags through a pipe, and the annular cavity is connected with the plurality of finger airbags through a hose.

[0021] In some embodiments, the top of the measuring cup is chamfered, the control component includes a plurality of fixed airbags respectively arranged on the outside of the inner tube, an annular cavity is arranged on the inner tube, the annular cavity is connected with a plurality of arc-shaped airbags through a pipe, the annular cavity is connected with a plurality of fixed airbags through a hose, a positioning groove for installing the fixed airbag is provided on the outside of the inner tube, a plurality of fixed grooves for placing the fixed airbags respectively are provided on the measuring cup, and a flexible layer is provided in each of the fixed grooves.

[0022] The present invention has at least the following beneficial effects:

[0023] 1. When measuring the moisture content of grains, the staff can use the drop unit to control the rotation of the function plate, thereby sealing the bottom of the inner tube and dropping all the grains in the inner tube into the measuring cup, avoiding the dumping of grains, simplifying the steps, and helping to reduce the workload of the staff;

[0024] 2. The rotating squeezing unit drives the inner tube and the functional plate to flatten the grains that fall into the measuring cup and press the grains, making the measurement of grain moisture content more accurate, further reducing the workload of the staff and preventing dust and impurities from adhering to the surface of the instrument;

[0025] 3. The setting of the push rod and the spring realizes a push-type trigger structure, which in turn drives the rotating extrusion unit to work, so that it can start to reset, extrude and flatten the grains after they have fallen, thereby improving the extrusion effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 For the present invention Figure 1 Schematic diagram of the local cross-section structure;

[0028] Figure 3 For the present invention Figure 2 Another structural diagram;

[0029] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure of the middle A area;

[0030] Figure 5 For the present invention Figure 1 Another schematic diagram of the cross-sectional structure;

[0031] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure of the middle B area;

[0032] Figure 7 This is a schematic diagram of the outer tube structure of the present invention;

[0033] Figure 8 It is a partial structural schematic diagram of the blanking unit of the present invention;

[0034] Fig. 9 For the present invention Figure 8 Another structural diagram;

[0035] Fig.10 For the present invention Fig. 9 Schematic diagram of the enlarged structure of the middle C area;

[0036] Fig.11 It is a schematic diagram of the explosion of part of the structure of the blanking unit after partial sectioning of the present invention;

[0037] Fig.12 For the present invention Fig.11 Schematic diagram of the enlarged structure of the middle D area;

[0038] Fig.13 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0039] Fig.14 For the present invention Fig.13 Schematic diagram of the local cross-section structure;

[0040] Fig.15 For the present invention Fig.14 Schematic diagram of the enlarged structure of the middle E area;

[0041] Fig.16 For the present invention Fig.13 Schematic diagram of the flat section structure.

[0042] In the figure: 1, body; 2, measuring cup; 3, rotating extrusion unit; 31, connecting plate; 4, extrusion member; 41, annular plate; 42, spring 1; 43, mounting groove; 44, circular groove; 45, spring 2; 46, positioning ball; 47, spring 3; 48, pressing plate; 49, push rod; 5, rotating member; 51, boss; 52, guide groove; 6, positioning member; 61, protruding seat; 62, annular groove; 63, annular boss; 7, blanking unit; 71 , positioning rod; 72, material guide seat; 8, adjustment member; 81, support seat; 82, main shaft; 83, steering seat; 84, torsion spring; 9, driving member; 91, rectangular groove; 92, rotating shaft; 93, extrusion rod; 94, arc-shaped airbag; 10, control member; 11, finger airbag; 12, annular cavity; 13, fixed airbag; 14, positioning groove; 15, fixed groove; 16, flexible layer; 17, collar; 18, outer tube; 19, inner tube; 20, functional board. DETAILED DESCRIPTION

[0043] 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.

[0044] Example 1

[0045] See also Figure 1-12 , the present invention provides a technical solution:

[0046] A grain moisture meter for plant quarantine, comprising a body 1 and a measuring cup 2 arranged on the body 1, and also comprising a collar 17, the collar 17 being arranged outside the measuring cup 2, the body 1 and the measuring cup 2 are both existing common structures, and no further description is given here;

[0047] An outer tube 18, which is disposed on the measuring cup 2 and is used in conjunction with the collar 17;

[0048] An inner tube 19, which is disposed inside the outer tube 18 and is used in conjunction with the outer tube 18;

[0049] Functional plates 20, multiple functional plates 20 are provided, and multiple functional plates 20 are evenly arranged at the bottom of the inner tube 19, and the bottom of the functional plates 20 is chamfered to avoid interference during rotation. At the same time, multiple functional plates 20 are used together to form a circle, and the size is the same as the inner tube 19, which is used to achieve the blocking of the inner tube 19, and in the initial state, the side wall of the functional plate 20 is in contact with the inner tube 19;

[0050] The rotary pressing unit 3 is arranged between the outer tube 18 and the inner tube 19, and is used to drive the inner tube 19 and the functional plate 20 to move, flatten the grains falling into the measuring cup 2, and press the grains;

[0051] The rotary extrusion unit 3 includes a connecting plate 31 arranged on the top of the outer tube 18, the top of the connecting plate 31 near the inner tube 19 is chamfered, an extrusion member 4 connected to the inner tube 19 is arranged on the connecting plate 31 for pressing the grains, a rotating member 5 is arranged on the outer tube 18 for driving the inner tube 19 to rotate when the inner tube 19 slides, and a positioning member 6 for locking and positioning is arranged between the outer tube 18 and the collar 17;

[0052] The extrusion member 4 includes an annular plate 41 arranged on the outside of the inner tube 19, and the annular plate 41 is slidably arranged inside the outer tube 18, a plurality of springs 42 are evenly arranged on the annular plate 41, and the two ends of the spring 42 are respectively connected to the connecting plate 31 and the annular plate 41, a mounting groove 43 is provided on the outer tube 18, and a plurality of circular grooves 44 are provided on the annular plate 41, and a spring 2 45 is arranged in each circular groove 44, and a positioning ball 46 engaged with the mounting groove 43 is arranged at the end of the spring 2 45, a spring 3 47 is arranged in the mounting groove 43, and a pressing plate 48 is arranged at the end of the spring 3 47, and a plurality of push rods 49 respectively matched with the positioning balls 46 are arranged on the pressing plate 48;

[0053] The rotating member 5 includes a boss 51 disposed on the annular plate 41. A guide groove 52 is provided inside the outer tube 18. The boss 51 is movably disposed in the guide groove 52 so that the inner tube 19 rotates left and right when it moves downward. The guide groove 52 is a curved "S"-shaped structure to ensure the rotation of the inner tube 19 when it is displaced.

[0054] The positioning member 6 includes a protruding seat 61 arranged at the bottom of the outer tube 18. The bottom of the protruding seat 61 close to the measuring cup 2 is chamfered. An annular groove 62 is formed on the protruding seat 61. An annular boss 63 is provided on the collar 17. The annular groove 62 and the annular boss 63 are interference fit.

[0055] The dropping unit 7 is arranged on the inner tube 19 and is used to control the rotation of the functional plate 20, thereby achieving the blocking of the bottom of the inner tube 19 and dropping all the grains in the inner tube 19 into the measuring cup 2;

[0056] The blanking unit 7 includes a plurality of positioning rods 71 ​​uniformly arranged inside the inner tube 19, the number of the positioning rods 71 ​​is the same as the number of the function boards 20, the positioning rods 71 ​​are all provided with adjusting members 8 for driving the adjacent function boards 20 to rotate, the positioning rods 71 ​​are all provided with driving members 9 for driving the adjusting members 8 to work, a control member 10 for synchronously driving the plurality of driving members 9 to work simultaneously is provided above the measuring cup 2, and a material guide seat 72 is provided on the top of the positioning rods 71;

[0057] The adjusting member 8 includes a support seat 81 arranged at the end of the positioning rod 71, a main shaft 82 is rotatably arranged on the support seat 81, a steering seat 83 is arranged on the function plate 20, the steering seat 83 is arranged on the main shaft 82, a torsion spring 84 is sleeved on the outer side of the main shaft 82, and the two ends of the torsion spring 84 are respectively connected to the steering seat 83 and the support seat 81;

[0058] A rectangular groove 91 is formed on the positioning rod 71, and the driving member 9 includes a rotating shaft 92 rotatably disposed in the rectangular groove 91, and an extrusion rod 93 is disposed on the rotating shaft 92, and the extrusion rod 93 can fit with the functional board 20, and an arc-shaped air bag 94 is disposed in the rectangular groove 91 for driving the extrusion rod 93 to rotate;

[0059] The control member 10 includes a plurality of finger airbags 11 respectively arranged on the outside of the outer tube 18, and an annular cavity 12 is arranged on the inner tube 19. The annular cavity 12 is connected to the plurality of arc-shaped airbags 94 through a pipeline, and the annular cavity 12 is connected to the plurality of finger airbags 11 through a hose.

[0060] In the initial state, the function plate 20 is in a horizontal state under the action of the torsion spring 84, that is, the bottom of the inner tube 19 is blocked. When in use, the staff adds grains from the upper openings of the outer tube 18 and the inner tube 19. After adding a proper amount, the staff holds the outer tube 18 with one hand and moves it to the top of the measuring cup 2, and the protruding seat 61 faces the top of the measuring cup 2. After the chamfering treatment, it is easy and accurate to insert;

[0061] At this time, the base of one hand is loosened, and two fingers are used to press the finger airbag 11, so that the gas in the finger airbag 11 enters the annular cavity 12 through the hose, and then enters the arc-shaped airbag 94 through the pipe, thereby fitting the extrusion rod 93 and extruding it. The extrusion rod 93 will also squeeze the function plate 20 synchronously, so that the function plate 20 rotates around the main axis 82, and the grains begin to fall. Due to the uniform arrangement of the function plate 20, the grains fall relatively evenly, which is conducive to evenly paving the measuring cup 2. After the fall is completed, the finger airbag 11 is released, and under the action of the torsion spring 84, the function plate 20 will be driven to reset, thereby resetting the gas in the extrusion rod 93 and the arc-shaped airbag 94;

[0062] When the annular boss 63 and the annular groove 62 are engaged, the pressing plate 48 can be pressed, and the push rod 49 at the front end of the pressing plate 48 will squeeze the positioning ball 46 and cancel the engagement between the positioning ball 46 and the mounting groove 43, so that the spring 1 42 starts to work, driving the inner tube 19 and the functional plate 20 to move downward, and under the action of the boss 51 and the guide groove 52, the inner tube 19 and the functional plate 20 will rotate left and right, so as to achieve uniform paving of the bottom grains, which is conducive to improving the uniformity of the placement of the grains in the measuring cup 2. When the buzzer sounds, the instrument completes a measurement, and the display reading at this time is the moisture content of the measured grains;

[0063] Pull out the outer tube 18 and gently push the inner tube 19 to re-engage the positioning ball 46 and the mounting groove 43. At the same time, the function plate 20 is in the initial state, and only needs to continue to add grains for the next measurement.

[0064] Example 2

[0065] See also Figure 13-16 , the present invention provides a technical solution:

[0066] Different from Example 1, this scheme provides another implementation of the control component 10: the top of the measuring cup 2 is chamfered, the control component 10 includes a plurality of fixed air bags 13 respectively arranged on the outside of the inner tube 19, an annular cavity 12 is arranged on the inner tube 19, the annular cavity 12 is connected with the plurality of arc-shaped air bags 94 through a pipeline, the annular cavity 12 is connected with the plurality of fixed air bags 13 through a hose, a positioning groove 14 for installing the fixed air bags 13 is provided on the outside of the inner tube 19, a plurality of fixed grooves 15 for respectively placing the fixed air bags 13 are provided on the measuring cup 2, and a flexible layer 16 is arranged in each of the fixed grooves 15. The arrangement of the flexible layer 16 is conducive to preventing grains from being discharged from the fixed grooves 15.

[0067] In the initial state, the function plate 20 is in a horizontal state under the action of the torsion spring 84, that is, the bottom of the inner tube 19 is blocked. When in use, the staff adds grains from the upper openings of the outer tube 18 and the inner tube 19. After adding a proper amount, the staff holds the outer tube 18 with one hand and moves it to the top of the measuring cup 2, and the protruding seat 61 faces the top of the measuring cup 2. After the chamfering treatment, it is easy and accurate to insert;

[0068] When the fixed airbag 13 at the bottom of the inner tube 19 contacts the measuring cup 2, the gas inside it enters the annular cavity 12 through the hose, and then enters the arc-shaped airbag 94 through the pipe, thereby fitting the extrusion rod 93 and extruding it. The extrusion rod 93 will also squeeze the functional plate 20 synchronously, so that the functional plate 20 rotates around the main axis 82, and the grains begin to fall, and continue to push the outer tube 18 downward. Due to the uniform arrangement of the functional plate 20, the grains fall relatively evenly, which is conducive to evenly paving the measuring cup 2. After the fall is completed, when the fixed airbag 13 moves into the fixed groove 15, the functional plate 20 is reset under the action of the torsion spring 84, so that the gas re-enters the fixed airbag 13 and squeezes the flexible layer 16;

[0069] When the annular boss 63 and the annular groove 62 are engaged, the pressing plate 48 can be pressed, and the push rod 49 at the front end of the pressing plate 48 will squeeze the positioning ball 46 and cancel the engagement between the positioning ball 46 and the mounting groove 43, so that the spring 1 42 starts to work, driving the inner tube 19 and the functional plate 20 to move downward, and under the action of the boss 51 and the guide groove 52, the inner tube 19 and the functional plate 20 will rotate left and right, so as to achieve uniform paving of the bottom grains, which is conducive to improving the uniformity of the placement of the grains in the measuring cup 2. When the buzzer sounds, the instrument completes a measurement, and the display reading at this time is the moisture content of the measured grains;

[0070] Pull out the outer tube 18 and gently push the inner tube 19 to re-engage the positioning ball 46 and the mounting groove 43. At the same time, the function plate 20 is in the initial state, and only needs to continue to add grains for the next measurement.

[0071] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0072] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grain moisture meter for plant quarantine, comprising a body (1) and a measuring cup (2) arranged on the body (1), characterized in that: It also includes a collar (17), wherein the collar (17) is arranged on the outside of the measuring cup (2); An outer tube (18), the outer tube (18) being arranged on the measuring cup (2) and being used in conjunction with the collar (17); an inner tube (19), wherein the inner tube (19) is arranged inside the outer tube (18) and is used in conjunction with the outer tube (18); A functional plate (20), wherein a plurality of the functional plates (20) are provided, and the plurality of the functional plates (20) are evenly arranged at the bottom of the inner tube (19); a rotary pressing unit (3), the rotary pressing unit (3) being arranged between the outer tube (18) and the inner tube (19), and being used to drive the inner tube (19) and the functional plate (20) to move, thereby flattening the grains that fall into the measuring cup (2) and pressing the grains; A material dropping unit (7) is provided on the inner tube (19) and is used to control the rotation of the function plate (20), thereby achieving the blocking of the bottom of the inner tube (19) and causing all the grains in the inner tube (19) to fall into the measuring cup (2); the rotary pressing unit (3) comprises a connecting plate (31) provided on the top of the outer tube (18); the top of the connecting plate (31) close to the inner tube (19) is chamfered; an pressing piece (4) connected to the inner tube (19) is provided on the connecting plate (31) and is used to press the grains; a rotating piece (5) is provided on the outer tube (18) and is used to drive the inner tube (19) to rotate when the inner tube (19) slides; and a rotating piece (5) is provided between the outer tube (18) and the collar (17). A positioning member (6) for locking and positioning is provided, the extrusion member (4) comprises an annular plate (41) arranged outside the inner tube (19), and the annular plate (41) is slidably arranged inside the outer tube (18), a plurality of springs (42) are evenly arranged on the annular plate (41), and the two ends of the springs (42) are respectively connected to the connecting plate (31) and the annular plate (41), the outer tube (18) is provided with a mounting groove (43), the annular plate (41) is provided with a plurality of circular grooves (44), each of the circular grooves (44) is provided with a spring (45), the end of the spring (45) is provided with a positioning ball (46) engaged with the mounting groove (43), and a spring (47) is provided in the mounting groove (43). The third end of the spring (47) is provided with a pressing plate (48), and the pressing plate (48) is provided with a plurality of push rods (49) respectively cooperating with the positioning balls (46). The rotating member (5) includes a boss (51) provided on the annular plate (41), and a guide groove (52) is provided inside the outer tube (18). The boss (51) is movably provided in the guide groove (52), so that the inner tube (19) rotates left and right when it moves downward. The positioning member (6) includes a protruding seat (61) provided at the bottom of the outer tube (18), and the bottom of the protruding seat (61) close to the measuring cup (2) is chamfered, and an annular groove (62) is provided on the protruding seat (61). The collar (17) is provided with an annular boss (63). The annular groove (62) and the annular boss (63) are interference fit, the blanking unit (7) comprises a plurality of positioning rods (71) uniformly arranged inside the inner tube (19), the number of the positioning rods (71) being the same as the number of the function plates (20), the positioning rods (71) being each provided with an adjusting member (8) for driving the adjacent function plates (20) to rotate, the positioning rods (71) being each provided with a driving member (9) for driving the adjusting member (8) to work, a control member (10) for synchronously driving the plurality of driving members (9) to work simultaneously being provided above the measuring cup (2), a material guide seat (72) being provided at the top of the positioning rod (71), the adjusting member (8) comprising a supporting seat (81) provided at the end of the positioning rod (71),A main shaft (82) is rotatably arranged on the support seat (81), a steering seat (83) is arranged on the function plate (20), the steering seat (83) is arranged on the main shaft (82), a torsion spring (84) is sleeved on the outer side of the main shaft (82), and the two ends of the torsion spring (84) are respectively connected to the steering seat (83) and the support seat (81), a rectangular groove (91) is provided on the positioning rod (71), the driving member (9) comprises a rotating shaft (92) rotatably arranged in the rectangular groove (91), an extrusion rod (93) is arranged on the rotating shaft (92), the extrusion rod (93) can be fitted with the function plate (20), and an arc-shaped air bag (94) for driving the extrusion rod (93) to rotate is arranged in the rectangular groove (91).

2. The grain moisture meter for plant quarantine according to claim 1, characterized in that: The control member (10) comprises a plurality of finger airbags (11) respectively arranged on the outside of the outer tube (18); an annular cavity (12) is arranged on the inner tube (19); the annular cavity (12) is connected to the plurality of arc-shaped airbags (94) through a pipeline; and the annular cavity (12) is connected to the plurality of finger airbags (11) through a hose.

3. The grain moisture meter for plant quarantine according to claim 1, characterized in that: The top of the measuring cup (2) is chamfered. The control member (10) comprises a plurality of fixed airbags (13) respectively arranged on the outside of the inner tube (19). The inner tube (19) is provided with an annular cavity (12). The annular cavity (12) is connected to the plurality of arc-shaped airbags (94) through a pipeline. The annular cavity (12) is connected to the plurality of fixed airbags (13) through a hose. A positioning groove (14) for mounting the fixed airbags (13) is provided on the outside of the inner tube (19). The measuring cup (2) is provided with a plurality of fixed grooves (15) for respectively placing the fixed airbags (13). A flexible layer (16) is provided in each of the fixed grooves (15).

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