Portable grain moisture meter

Abstract

The utility model relates to the technical field of grain moisture measurement, and discloses a portable grain moisture meter which comprises a base, a cover plate arranged on the base, a heating ring fixedly arranged in the cover plate, a bearing frame arranged in the base, a sample disc arranged on the bearing frame and a gravity sensing ring fixedly arranged in the base. The cover plate is used for pressing the pressing rod downwards, the sleeve is driven to rotate, the reciprocating lead screw is driven to rotate through transmission of the first bevel gear and the second bevel gear, then the reciprocating lead screw is matched with the limiting block on the sliding piece, the sliding piece and the scraping strip are driven to slide in a reciprocating mode, and when the sample disc moves to the position below the scraping strip, the scraping strip just moves to the edge position of the sample disc. Then, the lower part of the scraping strip is in contact with the edge of the sample disc, so that the scraping strip rotates to a certain degree, the lower end of the scraping strip deforms, and the lower end of the scraping strip enters the sample disc along with the downward movement of the sample disc and flatly paves the grains in the sample disc in a reciprocating manner.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of grain moisture determination, specifically to a portable grain moisture determination instrument. BACKGROUND

[0002] The grain moisture determination instrument is also called a grain moisture measuring instrument or a grain moisture detection instrument, is a kind of professional instrument specially used to measure the moisture content of grain, it adopts advanced microcomputer technology, can carry out the rapid determination to the moisture information of rice, soybean, wheat, corn and other kinds of grain seeds, and directly shows relevant data such as sample weight, temperature, bulk density conversion, moisture average value, its measuring principle is mostly drying weightlessness, i.e. the percentage of the weight difference before and after heating and the original weight of sample before heating is used to calculate the moisture content of grain, is widely applied to agricultural production and grain processing field and other industries needing to determine the moisture of grain, such as grain storage, processing, trade and other links;

[0003] In the actual use process of the grain moisture determination instrument, the grain to be detected needs to be placed in the sample disc, and then the heating cylinder is closed to heat the grain, and when the grain is placed in the sample disc, it needs to be manually flattened by artificial, so that it is evenly heated, and the water in the grain is evaporated, which is more tedious for the tester wearing gloves, and the artificial usually uses the way of shaking the sample disc, so that the centrifugal force drives the grain to be flattened, resulting in poor flattening effect of the grain, the heating time may be prolonged, and the grain is easily splashed out of the sample disc, causing resource waste, therefore, we provide a portable grain moisture determination instrument. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a portable grain moisture determination instrument to solve the problems in the above background.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: A portable grain moisture tester, including base, the cover plate of rotation installation on base, the heating ring of fixed installation in cover plate, the support frame of being provided with in base, be provided with sample disc on support frame, the gravity induction ring of fixed installation for detecting the weight of grain on sample disc in base, the pressure rod of sliding installation on base, the sleeve of setting of pressure rod, the sleeve rotation installation in base, be provided with limit groove on the inner wall of sleeve, the limit groove is spiral setting, be provided with the magnetic block of cooperation with limit groove on pressure rod, first bevel gear of fixed installation on sleeve, the second bevel gear of rotation installation with first bevel gear is engaged in the inside rotation of base, the reciprocating screw rod of rotation installation on second bevel gear, the sliding piece of sliding installation in base, the sliding piece sets up on reciprocating screw rod, and fixed installation has with reciprocating screw rod cooperation's limit block on the inner wall of sliding piece, the scraping strip of rotation installation for carrying out the sample disc in grain and flattening on sliding piece.

[0006] Preferably, the telescopic rod is fixedly installed in the pressure rod, the magnetic block is fixedly installed at the end of the telescopic rod, the diameter of the magnetic block is larger than the diameter of the end of the telescopic rod, the cross section of the limit groove is "convex" shape, and the first end and the tail end of the limit groove are provided with telescopic grooves, the magnetic shaft with magnetic repulsion is fixedly installed on the sleeve, and the position of the magnetic shaft corresponds to the telescopic groove at the tail end.

[0007] Preferably, the end of the magnetic block is provided in arc shape, the inner wall of the lower end of the sleeve is provided in wedge shape facilitating the retraction of the magnetic block, and the outer diameter of the limit groove is smaller than the diameter of the magnetic block.

[0008] Preferably, the spring is fixedly installed between the support frame and the inner wall of the base, and the support frame and the pressure rod are fixedly connected through the rod.

[0009] Preferably, the lower end of the scraping strip is made of flexible material, and the width of the scraping strip is smaller than the depth of the sample disc.

[0010] Preferably, the cover plate is provided with the air vent groove facilitating the discharge of water vapor.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] The utility model discloses a cover plate is used to the pressure bar is pressed down to drive sleeve rotation, through the drive of first bevel gear and second bevel gear, drive reciprocating screw rod rotation, again through the cooperation of reciprocating screw rod and sliding piece upper limit block, drive sliding piece and scrape strip reciprocating sliding, when sample disc motion reaches scrape strip below, scrape strip just motion reaches the edge position of sample disc, and then scrape strip below will contact with sample disc edge, make scrape strip rotate to a certain extent, and make the deformation of scrape strip lower extreme, with sample disc continuing to move down, scrape strip lower extreme will enter sample disc, and reciprocating flatten the cereal in sample disc. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is whole structure schematic diagram of the utility model;

[0014] Figure 2 It is bearing frame structure schematic diagram of the utility model;

[0015] Figure 3 It is limit slot structure schematic diagram of the utility model;

[0016] Figure 4 It is sleeve internal structure schematic diagram of the utility model;

[0017] Figure 5 It is reciprocating screw rod structure schematic diagram of the utility model;

[0018] Figure 6 It is limit block structure schematic diagram of the utility model.

[0019] In the drawing: 1-base;2-cover plate;3-heating ring;4-ventilation groove;5-sample disc;6-bearing frame;7-gravity induction ring;8-spring;9-pressing rod;10-telescopic rod;11-magnetic block;12-sleeve;13-telescopic groove;14-limit slot;15-magnetic shaft;16-first bevel gear;17-second bevel gear;18-reciprocating screw rod;19-sliding piece;20-limit block;21-scrape strip. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] Please refer to Figures 1-6The utility model provides a technical scheme: a portable cereal moisture determinator, including base 1, the cover plate 2 of rotation installation on base 1, the heating ring 3 of fixed installation in cover plate 2, be provided with the air groove 4 of convenient water vapor discharge on cover plate 2, be provided with the support frame 6 in base 1, be provided with sample tray 5 on support frame 6, the gravity response ring 7 for detecting the weight of cereal on sample tray 5 is fixedly installed in base 1, the pressure bar 9 of sliding installation is installed on base 1, the spring 8 of fixed installation is installed between support frame 6 and base 1 inner wall, and support frame 6 and pressure bar 9 are fixedly connected through the link, and the sleeve 12 of setting is provided on pressure bar 9, the sleeve 12 is rotationally installed in base 1, the limit slot 14 is set up on the inner wall of sleeve 12, and the limit slot 14 is set up spirally, and the magnetic block 11 that is matched with limit slot 14 is set up on pressure bar 9, the telescopic rod 10 of fixed installation is installed in pressure bar 9, the magnetic block 11 is fixedly installed on telescopic rod 10 end, and the diameter of magnetic block 11 is greater than telescopic rod 10 end diameter, the cross section of limit slot 14 is " convex " character, and its head and tail are provided with telescopic slot 13, the magnetic shaft 15 of repelling magnetism with magnetic block 11 is fixedly installed on sleeve 12, and the position of magnetic shaft 15 corresponds with limit slot 14 tail telescopic slot 13, the end of magnetic block 11 is set into arc, the inner wall of sleeve 12 lower end is set into wedge shape for the retraction of magnetic block 11, the external diameter of limit slot 14 is less than the diameter of magnetic block 11, when closing cover plate 2, cover plate 2 will push pressure bar 9 and move downward, in initial state, magnetic block 11 is pushed into the telescopic slot 13 of limit slot 14 head by telescopic rod 10, along with the downward movement of pressure bar 9, magnetic block 11 will enter limit slot 14 and drive sleeve 12 to rotate, and pressure bar 9 drives support frame 6 to move downward, and support frame 6 drives sample tray 5 to enter the inside of base 1, after magnetic block 11 moves to limit slot 14 end telescopic slot 13, magnetic block 11 will be aligned with magnetic shaft 15, and limit slot 14 no longer limits magnetic block 11, and magnetic block 11 will overcome the elastic force of telescopic rod 10 and retract to pressure bar 9, and sleeve 12 no longer rotates, and then magnetic block 11 continues to move downward to stop below sleeve 12.

[0022] The sleeve 12 is fixedly provided with a first bevel gear 16, the base 1 is rotatably provided with a second bevel gear 17 engaged with the first bevel gear 16, the second bevel gear 17 is rotatably provided with a reciprocating screw rod 18, the base 1 is slidably provided with a sliding piece 19, the sliding piece 19 is sleeved on the reciprocating screw rod 18, and the inner wall of the sliding piece 19 is fixedly provided with a limiting block 20 matched with the reciprocating screw rod 18, the sliding piece 19 is rotatably provided with a scraping strip 21 for flattening the grains in the sample disc 5, the lower end of the scraping strip 21 is made of flexible material, and the width of the scraping strip 21 is smaller than the depth of the sample disc 5; when the sleeve 12 rotates, the first bevel gear 16 rotates synchronously, the second bevel gear 17 and the reciprocating screw rod 18 rotate synchronously through the engagement of the first bevel gear 16 and the second bevel gear 17, and the sliding piece 19 and the scraping strip 21 reciprocate through the cooperation of the reciprocating screw rod 18 and the limiting block 20 on the sliding piece 19; during the rotation of the sleeve 12, the sample disc 5 is in a continuous descending process; when the sample disc 5 moves to the lower side of the scraping strip 21, the scraping strip 21 moves to the edge of the sample disc 5, then the lower side of the scraping strip 21 contacts the edge of the sample disc 5, so that the scraping strip 21 rotates to a certain extent and the lower end of the scraping strip 21 deforms; as the sample disc 5 continues to move downward, the lower end of the scraping strip 21 enters the sample disc 5 and reciprocally flattens the grains in the sample disc 5; since the width of the scraping strip 21 is smaller than the depth of the sample disc 5, the scraping strip 21 will not hang the grains at the bottom of the sample disc 5; as the distance between the lower end of the scraping strip 21 and the bottom of the sample disc 5 increases, the grains can be flattened layer by layer during the reciprocating scraping of the scraping strip 21; after the sleeve 12 stops moving, the reciprocating movement of the scraping strip 21 is completed and the scraping strip 21 is located at the initial position, and the rotation angle of the sleeve 12 is a whole number of turns; after the moisture content of the grains is determined, when the cover plate 2 is lifted, the supporting frame 6 is pushed upward by the elastic force of the spring 8, driving the sample disc 5 and the pressing rod 9 to move upward and reset; during the upward movement of the pressing rod 9, the magnetic block 11 first contacts the inclined surface on the inner wall of the bottom of the sleeve 12 and retracts; when the magnetic block 11 continues to move upward and passes through the telescopic slot 13 at the tail end of the limiting slot 14, the magnetic block 11 will not enter the telescopic slot 13 at the tail end of the limiting slot 14 due to the magnetic repulsion of the magnetic shaft 15; since the outer diameter of the limiting slot 14 is smaller than the diameter of the magnetic block 11, the magnetic block 11 cannot directly extend into the limiting slot 14; the magnetic block 11 will always remain in the retracted state and move upward; during the upward movement of the pressing rod 9, the sleeve 12 will not rotate and the scraping strip 21 will not move; after the pressing rod 9 is reset upward, the magnetic block 11 corresponds to the telescopic slot 13 at the head end of the limiting slot 14 and is pushed into the telescopic slot 13 at the head end of the limiting slot 14 by the elastic force of the telescopic rod 10, thereby returning to the initial state.

[0023] Specifically, first, an appropriate amount of grain is placed on the sample disc 5, then the sample disc 5 is placed on the support frame 6, and the cover plate 2 is closed, which will push the pressure rod 9 downward, the magnetic block 11 will enter the limiting groove 14, and drive the sleeve 12 to rotate, at the same time, the pressure rod 9 drives the support frame 6 to move downward, the support frame 6 drives the sample disc 5 to enter the inside of the base 1, after the magnetic block 11 moves to the telescopic slot 13 at the end of the limiting groove 14, the magnetic block 11 will be aligned with the magnetic shaft 15, and the limiting groove 14 will no longer limit the magnetic block 11, the magnetic block 11 will overcome the elastic force of the telescopic rod 10 and retract into the pressure rod 9, the sleeve 12 will also stop rotating, when the sleeve 12 rotates, it will drive the first bevel gear 16 to rotate synchronously, through the meshing of the first bevel gear 16 and the second bevel gear 17, the second bevel gear 17 and the reciprocating lead screw 18 will be driven to rotate synchronously, and then through the cooperation of the reciprocating lead screw 18 and the limiting block 20 on the sliding piece 19, the sliding piece 19 and the scraping strip 21 will be driven to reciprocate, the sample disc 5 is in a constant downward process during the rotation of the sleeve 12, when the sample disc 5 moves to the position below the scraping strip 21, the scraping strip 21 just moves to the edge of the sample disc 5, then the scraping strip 21 below will contact with the edge of the sample disc 5, so that the scraping strip 21 rotates to a certain extent, and the lower end of the scraping strip 21 deforms, with the continuous downward movement of the sample disc 5, the lower end of the scraping strip 21 will enter the sample disc 5, and the grain in the sample disc 5 will be flattened reciprocally, and because the width of the scraping strip 21 is less than the depth of the sample disc 5, the scraping strip 21 will not hang the grain at the bottom of the sample disc 5, with the increase of the distance between the lower end of the scraping strip 21 and the bottom of the sample disc 5, the grain can be flattened layer by layer during the reciprocating scraping of the scraping strip 21, after the movement of the sleeve 12 is completed, the reciprocating movement of the scraping strip 21 is completed and located at the initial position, and the rotation angle of the sleeve 12 is a whole number of turns, after the cover plate 2 is closed, the heating ring 3 starts to heat to evaporate the water in the grain, the pressure sensed by the gravity sensing ring 7 will gradually decrease, and finally the water content of the grain is obtained, after the determination of the water content of the grain is completed, the cover plate 2 is lifted, the support frame 6 is pushed by the elastic force of the spring 8, drives the sample disc 5 and the pressure rod 9 to move upward and reset, during the upward movement of the pressure rod 9 driving the magnetic block 11, the magnetic block 11 will first contact the inclined surface at the bottom of the sleeve 12 and retract, when the magnetic block 11 continues to move upward through the telescopic slot 13 at the tail end of the limiting groove 14, it will not enter the telescopic slot 13 at the tail end of the limiting groove 14 due to the magnetic repulsion of the magnetic shaft 15, because the outer diameter of the limiting groove 14 is smaller than the diameter of the magnetic block 11, the magnetic block 11 cannot directly extend into the limiting groove 14, the magnetic block 11 will always maintain the retracted state and move upward, the pressure rod 9 will not drive the sleeve 12 to rotate during the upward movement, and the scraping strip 21 will not move, after the upward reset of the pressure rod 9 is completed, the magnetic block 11 will correspond to the telescopic slot 13 at the head end of the limiting groove 14, and will be pushed into the telescopic slot 13 at the head end of the limiting groove 14 by the elastic force of the telescopic rod 10, and will return to the initial state.

[0024] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0025] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A portable grain moisture analyzer, comprising a base (1) and a cover plate (2) rotatably mounted on the base (1), characterized in that: A heating coil (3) is fixedly installed inside the cover plate (2). A support frame (6) is provided inside the base (1). A sample tray (5) is provided on the support frame (6). A gravity sensing ring (7) for detecting the weight of grains on the sample tray (5) is fixedly installed inside the base (1). A pressure rod (9) is slidably installed on the base (1). A sleeve (12) is fitted on the pressure rod (9). The sleeve (12) is rotatably installed inside the base (1). A limiting groove (14) is provided on the inner wall of the sleeve (12). The limiting groove (14) is spirally arranged. A magnetic block that cooperates with the limiting groove (14) is provided on the pressure rod (9). (11) A first bevel gear (16) is fixedly installed on the sleeve (12). A second bevel gear (17) that meshes with the first bevel gear (16) is rotatably installed inside the base (1). A reciprocating screw (18) is rotatably installed on the second bevel gear (17). A sliding member (19) is slidably installed inside the base (1). The sliding member (19) is sleeved on the reciprocating screw (18). A limiting block (20) that cooperates with the reciprocating screw (18) is fixedly installed on the inner wall of the sliding member (19). A scraper (21) for leveling the grains in the sample tray (5) is rotatably installed on the sliding member (19).

2. The portable grain moisture analyzer according to claim 1, characterized in that: A telescopic rod (10) is fixedly installed inside the pressure rod (9). The magnetic block (11) is fixedly installed at the end of the telescopic rod (10), and the diameter of the magnetic block (11) is larger than the diameter of the end of the telescopic rod (10). The cross-section of the limiting groove (14) is "convex" shaped, and both its head and tail ends are provided with telescopic grooves (13). A magnetic shaft (15) that is magnetically repelled by the magnetic block (11) is fixedly installed on the sleeve (12). The position of the magnetic shaft (15) corresponds to the telescopic groove (13) at the tail end of the limiting groove (14).

3. A portable grain moisture analyzer according to claim 2, characterized in that: The end of the magnetic block (11) is set in an arc shape, the inner wall of the lower end of the sleeve (12) is set in a wedge shape to facilitate the retraction of the magnetic block (11), and the outer diameter of the limiting groove (14) is smaller than the diameter of the magnetic block (11).

4. A portable grain moisture analyzer according to claim 1, characterized in that: A spring (8) is fixedly installed between the support frame (6) and the inner wall of the base (1), and the support frame (6) and the pressure rod (9) are fixedly connected by a rod.

5. A portable grain moisture analyzer according to claim 1, characterized in that: The lower end of the scraper (21) is made of flexible material, and the width of the scraper (21) is less than the depth of the sample plate (5).

6. A portable grain moisture analyzer according to claim 1, characterized in that: The cover plate (2) is provided with a venting groove (4) to facilitate the discharge of water vapor.

Images