CN110568136B - Method and instrument for rapidly measuring grain moisture by buoyancy method - Google Patents
Method and instrument for rapidly measuring grain moisture by buoyancy method Download PDFInfo
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- CN110568136B CN110568136B CN201910948630.4A CN201910948630A CN110568136B CN 110568136 B CN110568136 B CN 110568136B CN 201910948630 A CN201910948630 A CN 201910948630A CN 110568136 B CN110568136 B CN 110568136B
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Abstract
The invention belongs to the technical field of grain moisture measurement, in particular to a method for rapidly measuring grain moisture by a buoyancy method and a measuring instrument thereof; the device comprises a graduated scale, a measuring cylinder, an electronic balance, an air pump, a grain dryer, a water tank, a first sealing cover, a second sealing cover, a range finder, grains, an air passage, a first net and a second net; the water tank comprises a left tank body and a right tank body, the air passage is communicated with the left tank body and the right tank body, and the center of the air passage is connected with the air pump; the upper end of the left box body is provided with a first box opening, and the first box opening is connected with a first sealing cover through threads; the upper end of the right box body is provided with a second box opening, and the range finder is fixedly connected with the upper end surface of the inside of the left box body and the upper end surface of the inside of the right box body respectively; the method is mainly used for measuring the moisture content of corn grains, and the moisture content of grains is indirectly calculated by measuring the height of the liquid level of the dried grains from the distance meter after water absorption and measuring the height of the liquid level of the un-dried grains from the distance meter after water absorption by the same amount.
Description
Technical Field
The invention belongs to the technical field of grain moisture measurement, and particularly relates to a method and a device for rapidly measuring grain moisture by a buoyancy method.
Background
The water content is used as an important quality index of grains, and directly affects various links of grain acquisition, sales, transportation, storage, processing and the like, so that the measurement of the grain water content is very significant to grain departments. How to quickly, accurately and conveniently measure the moisture of grains is a worldwide problem, and many countries such as the United states, japan, france, england, sweden and the like are actively discussed, but the adoption of a plurality of methods has a plurality of defects, such as: the national standard method (drying method) has high detection precision, but is time-consuming, energy-consuming and low in efficiency, and can not realize quick online detection; although the capacitance method has the advantages of simple structure, low cost and high speed, the capacitance method has the advantages of more interference factors, low measurement precision and poor stability; the resistance method has high requirements on samples, has a narrow water measurement range, and is not suitable for measuring high-moisture grains; although the infrared heating method is quick in measurement, the dry matter loss is easy to cause, the measurement accuracy is low, and the near infrared method is quick in analysis speed, but the variety, size, density, ambient temperature, vibration and the like of a sample have influence on the measurement result, so that the stability is poor, and the application range is small; and microwave and radio methods, nuclear magnetic resonance methods, neutron methods, acoustic methods, etc., but have not been widely used for various reasons such as high requirements for the corresponding conditions, high cost, etc. At present, the water detection technology in China is not perfect, the online water detection of links such as domestic grain purchase, drying and the like still stays at the level of sensory inspection and experience judgment, and the measurement result is neither scientific nor reliable.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a method for rapidly measuring the moisture of grains by a buoyancy method and a measuring instrument thereof. The method is used for measuring the moisture content of corn grains, and the moisture content of grains is indirectly calculated by measuring the height of the liquid level of the dried grains from the distance meter after water absorption and measuring the height of the liquid level of the un-dried grains from the distance meter after water absorption by the same amount.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to a rapid grain moisture tester by a buoyancy method, which comprises a graduated scale, a measuring cylinder, an electronic balance, an air pump and a grain dryer, wherein the graduated scale is used for measuring the length; the measuring cylinder is used for measuring the volume of water; the electronic balance is used for weighing the mass of the cereal; the air pump is used for pressurizing; the grain dryer is used for drying grains; comprises a water tank, a first sealing cover, a second sealing cover, a range finder, grains, an air passage, a first net and a second net; the water tank comprises a left tank body and a right tank body, and the left tank body and the right tank body are flat relative to the center of the water tankThe plane is symmetrical; the air passage is arranged at the upper part of the middle of the water tank, the left tank body and the right tank body are communicated through the air passage, and the center of the air passage is connected with the air pump; the upper end of the left box body is provided with a first box opening, a first trapezoidal thread is formed in the inner side of the first box opening, and a rubber layer is arranged on the surface of the first trapezoidal thread; the first box opening is connected with the first sealing cover through threads; the upper end of the right box body is provided with a second box opening, a second trapezoidal thread is formed in the inner side of the second box opening, and a rubber layer is arranged on the surface of the second trapezoidal thread; the second box opening is connected with the second sealing cover through threads; the inside of the left box body is provided with a first net, grains are filled in the first net, meshes of the first net are smaller than grains, the right end of the first net is fixedly connected with the right end of a first box opening, and the left end of the first net is fixedly connected with the left end of a first sealing cover; the inside of the right box body is provided with a second net, grains which are equal to those in the first net are filled in the second net, the left end of the second net is fixedly connected with the left side of the opening of the second box, the right end of the second net is fixedly connected with the right end of the second sealing cover, and meshes of the second net are smaller than grains; the distance meters are respectively and fixedly connected to the upper end face inside the left box body and the upper end face inside the right box body, and the heights of the two distance meters are the same; during operation, the corn is taken as corn particles, the corn particles are evenly divided into a first pile and a second pile through an electronic balance, the mass of the first pile and the second pile is m, the corn particles of the first pile are put into a grain dryer for drying, the corn particles of the second pile are not required to be dried, then the corn particles of the first pile and the second pile are respectively poured into a left box body and a right box body through a measuring cylinder in an equal amount, the corn particles of the first pile after drying are simultaneously put into a first net and are immersed in water of the left box body, the corn particles of the second pile which are not dried are put into a second net and are immersed in water of the right box body, a first box opening is tightly sealed by a first sealing cover in a rotating manner, a second box opening is tightly sealed by a second sealing cover in a rotating manner, and the corn particles of the first pile and the second pile are simultaneously pressurized through an air pump in the left box body and the right box body, the corn particles of the first pile and the second pile are accelerated to absorb water, the corn particles of the second pile are also accelerated, the corn particles of the first pile and the second pile are immersed in three very directions simultaneouslyAfter the clock, the sealing cover I and the sealing cover II are opened simultaneously, the sealing cover I drives the left end of the first net to bring corn particles in the first net out of the water surface, the sealing cover II drives the right end of the second net to bring corn particles in the second net out of the water surface, and after the sealing cover II stands for thirty minutes simultaneously, the distance between the liquid level of the left box body and the laser range finder is measured by the laser range finder to be h 1 Distance h between right box liquid level and laser range finder is measured 2 The length and width of the inner cavity of the left box body are respectively a and b measured by using a graduated scale, and the length and width of the inner cavity of the right box body are respectively a and b because the left box body and the right box body are symmetrical relative to the central symmetry plane of the water tank, so that the moisture content of corn is obtained: moisture (%) =10 3 ×ab(h 2 -h 1 ) M×100%; the surface of the first trapezoid thread is provided with the rubber layer, so that the first box opening is more tightly connected with the first sealing cover, and the air tightness is better; the surface of the trapezoid threads of the second is provided with the rubber layer, so that the connection between the box opening of the second and the sealing cover of the second is tighter, and the air tightness is better.
The inner side of the first sealing cover is made of a hard rubber material, and the outer side of the first sealing cover is made of a soft rubber material; the outer side of the first sealing cover is provided with a third trapezoidal thread, the third trapezoidal thread is formed by a piece of discontinuous trapezoidal bulge, the rear side of the trapezoidal bulge is provided with a first hole, the first hole is communicated with the lower end of the first sealing cover, the number of the first holes is at least six, and the first holes are uniformly distributed along the circumferential direction of the first sealing cover; when the hole is pressurized and gas is introduced into the hole, as the outer side material of the sealing cover is soft rubber material and the inner side material of the sealing cover is hard rubber material, the outer side deformation of the sealing cover is larger than the inner side of the sealing cover, the trapezoidal thread is formed by a discontinuous trapezoidal bulge, so that the trapezoidal bulge can expand outwards, the outer side of the sealing cover is propped outwards more tightly, the sealing cover is connected with a box opening more tightly, and the sealing cover is the same as the sealing cover and is not repeated.
The left end of the first net is wrapped with a soft rubber layer; the right end of the second net is also wrapped with a soft rubber layer; when the novel sealing device works, the left end of the first net is wrapped with the soft rubber layer, the soft rubber layer is easy to deform when being extruded, so that the air tightness between the first sealing cover and the first box opening is reduced less when the left end of the first net is clamped by the first sealing cover and the first box opening, the friction force between the soft rubber layer and the first sealing cover is large, and the soft rubber layer is not easy to fall off; the right end of the second net is also wrapped with a soft rubber layer, and the second net is similar to the first net in condition and will not be described here.
The inside of the first net is provided with a first air cavity, the lower part of the first net is provided with a first opening, and the air of the first air cavity can be guided out from the first opening; the inside of the second net is provided with a second air cavity, the lower part of the second net is provided with a second opening, and the gas in the second air cavity can be guided out from the second opening; when the corn harvester works, the left end of the first net is extruded by the first sealing cover and the first opening, gas at the upper end of the first air cavity is extruded into the lower end of the first air cavity, and gas in the first air cavity is extruded from the first opening, so that the air pressure in the left box body is increased, and moisture absorption of corn grains in a first pile in the left box body is promoted to be faster; the inside of No. two nets is provided with No. two air cavities, and No. two air cavities are provided with No. two openings in the lower part of No. two nets, and No. two air cavities's condition is the same with No. one net, and No. two air cavities are described in detail herein.
The inner walls of the left box body and the right box body are coated with super-hydrophobic paint, so that the inner walls of the left box body and the right box body are not easy to be stained with water; the first net and the second net are also coated with the super-hydrophobic coating, so that the first net and the second net are not easy to be stained with water; during operation, the inner wall of the left box body and the inner wall of the right box body are coated with the super-hydrophobic coating, so that the inner wall of the left box body and the inner wall of the right box body are not stained with water, the first net and the second net are also coated with the super-hydrophobic coating, the first net and the second net are not easy to be stained with water, after corn particles are lifted and stand for thirty minutes, more water stained on the inner wall of the left box body and more water stained on the first net flow into the liquid level of the left box body, more water stained on the inner wall of the right box body and more water stained on the first net flow into the liquid level of the right box body, and errors of total volume of water in the left box body and the rear box body after standing are reduced, so that the water content of corn particles is measured more accurately.
A method for rapidly determining grain moisture by a buoyancy method comprises the following steps:
s1: the corn is taken as corn particles, the corn particles are evenly divided into a first pile and a second pile through an electronic balance, the mass of the first pile and the mass of the second pile are m, the corn particles of the first pile are put into a grain dryer for drying at the set temperature of 105 ℃, and the corn particles of the second pile are not required to be dried until the weight of the corn particles of the first pile is not reduced.
S2: and then, measuring an equal amount of corn particles respectively poured into the left box body and the right box body through a measuring cylinder, simultaneously putting the dried corn particles in the first pile into water of the left box body, putting the corn particles in the second pile, which are not dried, into water of the right box body, tightly sealing the first box opening by a first sealing cover in a screwing way, tightly sealing the second box opening by a second sealing cover in a screwing way, simultaneously pressurizing the left box body and the right box body through an air passage through an air pump, promoting the corn particles in the first pile and the second pile to sink, accelerating the corn particles in the first pile to absorb water, accelerating the corn particles in the second pile to absorb water, and simultaneously soaking the corn particles in the first pile and the corn particles in the second pile for thirty minutes.
S3: after the corn particles in the first pile and the corn particles in the second pile are soaked for thirty minutes simultaneously, the first sealing cover and the second sealing cover are opened simultaneously, the first sealing cover drives the left end of the first net to bring the corn particles in the first pile out of the water surface, the second sealing cover drives the right end of the second net to bring the corn particles in the second pile out of the water surface, and the corn particles in the second net are kept stand for thirty minutes simultaneously.
S4: after taking corn particles of the first pile and corn particles of the second pile out of the water surface and standing for thirty minutes, measuring the distance between the liquid level of the left box body and the laser range finder to be h through the laser range finder 1 Distance h between right box liquid level and laser range finder is measured 2 The length and width of the inner cavity of the left box body are respectively a and b measured by a graduated scale, and the length and width of the inner cavity of the right box body are respectively as the left box body and the right box body are symmetrical about the central symmetry plane of the water tankFor a, b, the corn moisture content is obtained: moisture (%) =10 3 ×ab(h 2 -h 1 )÷m×100％。
The beneficial effects of the invention are as follows:
1. the invention is used for measuring the moisture content of corn particles, and the rubber layer is arranged on the surface of the first trapezoidal thread, so that the connection between the first box opening and the first sealing cover is tighter, and the air tightness is better; the surface of the trapezoid threads of the second is provided with the rubber layer, so that the connection between the box opening of the second and the sealing cover of the second is tighter, and the air tightness is better.
2. The invention adopts the soft rubber material as the outer side material of the first sealing cover and the hard rubber material as the inner side material of the first sealing cover, so that the outer side deformation of the first sealing cover is larger than the inner side of the first sealing cover, the third trapezoidal thread consists of a piece of discontinuous trapezoidal bulge, thereby expanding and expanding the third trapezoidal thread outwards, further enabling the outer side of the first sealing cover to push the trapezoidal bulge outwards more tightly, further enabling the connection between the first sealing cover and the first box opening to be more tight,
3. according to the invention, the soft rubber layer is wrapped at the left end of the first net, and is easy to deform when being extruded, so that the air tightness between the first sealing cover and the first box opening is reduced less when the left end of the first net is clamped by the first sealing cover and the first box opening, and the friction force between the soft rubber layer and the first sealing cover is large, so that the soft rubber layer is not easy to fall off.
Drawings
FIG. 1 is a half cross-sectional view of the present invention;
FIG. 2 is a full cross-sectional view of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a flow chart of the method of the present invention;
in the figure: the water tank 1, the air duct 11, the left tank body 12, the right tank body 13, the first tank opening 14, the first trapezoidal thread 15, the second tank opening 16, the second trapezoidal thread 17, the rubber layer 18, the first sealing cover 2, the third trapezoidal thread 21, the trapezoidal bulge 22, the first hole 23, the second sealing cover 3, the distance meter 4, the grain 5, the first net 6 and the second net 7.
Detailed Description
A method for rapidly measuring moisture in grains by a buoyancy method according to an embodiment of the present invention and a measuring instrument thereof will be described below with reference to fig. 1 to 4, and the front-rear, left-right directions according to the present invention are all based on fig. 2.
As shown in fig. 1-4, the rapid grain moisture tester by the buoyancy method comprises a graduated scale, a measuring cylinder, an electronic balance, an air pump and a grain 5 dryer, wherein the graduated scale is used for measuring the length; the measuring cylinder is used for measuring the volume of water; the electronic balance is used for weighing the mass of the grains 5; the air pump is used for pressurizing; the grain 5 dryer is used for drying grains 5; the device comprises a water tank 1, a first sealing cover 2, a second sealing cover 3, a range finder 4, grains 5, an air passage 11, a first net 6 and a second net 7; the water tank 1 comprises a left tank body 12 and a right tank body 13, and the left tank body 12 and the right tank body 13 are symmetrical with respect to the central plane of the water tank 1; the air passage 11 is arranged at the upper part of the middle of the water tank 1, the air passage 11 is communicated with the left tank body 12 and the right tank body 13, and the center of the air passage 11 is connected with the air pump; the upper end of the left box body 12 is provided with a first box opening 14, a first trapezoidal thread 15 is arranged on the inner side of the first box opening 14, and a rubber layer 18 is arranged on the surface of the first trapezoidal thread 15; the first box opening 14 is connected with the first sealing cover 2 through threads; the upper end of the right box body 13 is provided with a second box opening 16, a second trapezoidal thread 17 is arranged on the inner side of the second box opening 16, and a rubber layer 18 is arranged on the surface of the second trapezoidal thread 17; the second box opening 16 is connected with the second sealing cover 3 through threads; the inside of the left box body 12 is provided with a first net 6, grains 5 are filled in the first net 6, meshes of the first net 6 are smaller than grains 5, the right end of the first net 6 is fixedly connected with the right end of a first box opening 14, and the left end of the first net 6 is fixedly connected with the left end of a first sealing cover 2; the inside of the right box body 13 is provided with a second net 7, grains 5 which are equal to the grains 5 in the first net 6 are filled in the second net 7, the left end of the second net 7 is fixedly connected with the left side of a second box opening 16, the right end of the second net 7 is fixedly connected with the right end of a second sealing cover 3, and meshes of the second net 7 are smaller than grains 5; the distance meters 4 are respectively fixedly connected to the upper end face inside the left box body 12 and the upper end face inside the right box body 13, and the heights of the two distance meters 4 are the same; in operation, whatTaking corn 5 as corn particles, uniformly dividing the corn particles into a first pile and a second pile by an electronic balance, wherein the mass of the first pile and the second pile is m, putting the corn particles of the first pile into a grain 5 dryer for drying, taking the corn particles of the second pile by a measuring cylinder, respectively pouring the corn particles of the second pile into a left box body 12 and a right box body 13 in equal amounts, simultaneously putting the dried corn particles of the first pile into a first net 6 and immersing the corn particles in water of the left box body 12, putting the corn particles of the second pile into a second net 7 and immersing the corn particles in water of the right box body 13, tightly sealing a first box opening 14 by a first sealing cover 2 in a screwing mode, tightly sealing a second box opening 16 by a second sealing cover 3 in a screwing mode, simultaneously pressurizing the inside of the left box body 12 and the inside of the right box body 13 by an air pump through an air channel 11, the corn particles floating in the first pile and the second pile are promoted to sink, the corn particles in the first pile can be accelerated to absorb moisture, the corn particles in the second pile can be accelerated to absorb moisture, after the corn particles in the first pile and the corn particles in the second pile are soaked for thirty minutes simultaneously, the first sealing cover 2 and the second sealing cover 3 are opened simultaneously, the first sealing cover 2 drives the left end of the first net 6 to bring the corn particles in the first net 6 out of the water, the second sealing cover 3 drives the right end of the second net 7 to bring the corn particles in the second net 7 out of the water, and after the corn particles are stood for thirty minutes simultaneously, the distance between the liquid level of the left box 12 and the laser range finder 4 is measured through the laser range finder 4 to be h 1 Distance h between the liquid surface of right box 13 and laser range finder 4 is measured 2 The length and width of the inner cavity of the left box body 12 are respectively a and b measured by using a graduated scale, and the length and width of the inner cavity of the right box body 13 are respectively a and b because the left box body 12 and the right box body 13 are symmetrical relative to the central symmetry plane of the water tank 1, so that the moisture content of corn is obtained: moisture (%) =10 3 ×ab(h 2 -h 1 ) M×100%; the surface of the first trapezoidal thread 15 is provided with the rubber layer 18, so that the first box opening 14 is more tightly connected with the first sealing cover 2, and the air tightness is better; the surface of the second trapezoidal thread 17 is provided with a rubber layer 18, so that the connection between the second box opening 16 and the second sealing cover 3 is tighter, and the air tightness is better.
The inner side of the first sealing cover 2 is made of hard rubber material, and the outer side of the first sealing cover 2 is made of soft rubber material; the outer side of the first sealing cover 2 is provided with a third trapezoidal thread 21, the third trapezoidal thread 21 is composed of a piece of discontinuous trapezoidal bulges 22, the rear side of the trapezoidal bulges 22 is provided with a first hole 23, the first hole 23 is communicated with the lower end of the first sealing cover 2, the number of the first holes 23 is at least six, and the first holes 23 are uniformly distributed along the circumferential direction of the first sealing cover 2; when the sealing device works, when the first hole 23 is pressurized and is filled with gas, as the outer side material of the first sealing cover 2 is made of soft rubber material, the inner side material of the first sealing cover 2 is made of hard rubber material, the outer side deformation of the first sealing cover 2 is larger than that of the inner side of the first sealing cover 2, the third trapezoidal thread 21 is formed by a discontinuous trapezoidal bulge 22, so that the third trapezoidal thread 21 can expand outwards, the outer side of the first sealing cover 2 props the trapezoidal bulge 22 outwards more tightly, the connection between the first sealing cover 2 and the first box opening 14 is tighter, the second sealing cover 3 is identical to the first sealing cover 2, and details are omitted.
The left end of the first net 6 is wrapped with a soft rubber layer; the right end of the second net 7 is also wrapped with a soft rubber layer; when the novel sealing device works, the left end of the first net 6 is wrapped with a soft rubber layer, the soft rubber layer is easy to deform when being extruded, so that the air tightness between the first sealing cover 2 and the first box opening 14 is reduced less when the left end of the first net 6 is clamped by the first sealing cover 2 and the first box opening 14, and the friction between the soft rubber layer and the first sealing cover 2 is large and is not easy to fall off; the right end of the second net 7 is also wrapped with a soft rubber layer, and the second net 7 is similar to the first net 6 in terms of conditions, and will not be described here.
The inside of the first net 6 is provided with a first air cavity, the lower part of the first net 6 is provided with a first opening, and the air of the first air cavity can be guided out from the first opening; the inside of the second net 7 is provided with a second air cavity, the lower part of the second net 7 is provided with a second opening, and the air in the second air cavity can be guided out from the second opening; when the corn harvester works, the left end of the first net 6 is extruded by the first sealing cover 2 and the first opening, gas at the upper end of the first air cavity is extruded into the lower end of the first air cavity, and gas in the first air cavity is extruded from the first opening, so that the air pressure in the left box body 12 is increased, and moisture absorption of corn grains in a first pile in the left box body 12 is promoted to be faster; the inside of No. two nets 7 is provided with No. two air cavities, and No. two air cavities are provided with No. two openings in the lower part of No. two nets 7, and the condition of No. two air cavities is the same with No. one net 6, and No. two air cavities are described in detail herein.
The inner walls of the left box body 12 and the right box body 13 are coated with super-hydrophobic paint, so that the inner walls of the left box body 12 and the right box body 13 are not easy to be stained with water; the first net 6 and the second net 7 are also coated with super-hydrophobic coating, so that the first net 6 and the second net 7 are not easy to be stained with water; during operation, the inner walls of the left box body 12 and the right box body 13 are coated with the superhydrophobic coating, so that the inner walls of the left box body 12 and the right box body 13 are not stained with water, the first net 6 and the second net 7 are also coated with the superhydrophobic coating, the first net 6 and the second net 7 are not stained with water easily, after corn particles are lifted and kept for thirty minutes, more water stained on the inner walls of the left box body 12 and water stained on the first net 6 flow into the liquid level of the left box body 12, more water stained on the inner walls of the right box body 13 and water stained on the first net 6 flow into the liquid level of the right box body 13, and errors of total volumes of water in the left box body 12 and the rear box body after standing are reduced, so that the water content of corn particles is measured more accurately.
A method for rapidly determining grain moisture by a buoyancy method comprises the following steps:
s1: the corn is taken as corn particles, the corn particles are evenly divided into a first pile and a second pile through an electronic balance, the mass of the first pile and the mass of the second pile are m, the corn particles of the first pile are put into a grain dryer for drying at the set temperature of 105 ℃, and the corn particles of the second pile are not required to be dried until the weight of the corn particles of the first pile is not reduced.
S2: and then, measuring an equal amount of corn particles respectively poured into the left box body and the right box body through a measuring cylinder, simultaneously putting the dried corn particles in the first pile into water of the left box body, putting the corn particles in the second pile, which are not dried, into water of the right box body, tightly sealing the first box opening by a first sealing cover in a screwing way, tightly sealing the second box opening by a second sealing cover in a screwing way, simultaneously pressurizing the left box body and the right box body through an air passage through an air pump, promoting the corn particles in the first pile and the second pile to sink, accelerating the corn particles in the first pile to absorb water, accelerating the corn particles in the second pile to absorb water, and simultaneously soaking the corn particles in the first pile and the corn particles in the second pile for thirty minutes.
S3: after the corn particles in the first pile and the corn particles in the second pile are soaked for thirty minutes simultaneously, the first sealing cover and the second sealing cover are opened simultaneously, the first sealing cover drives the left end of the first net to bring the corn particles in the first pile out of the water surface, the second sealing cover drives the right end of the second net to bring the corn particles in the second pile out of the water surface, and the corn particles in the second net are kept stand for thirty minutes simultaneously.
S4: after taking corn particles of the first pile and corn particles of the second pile out of the water surface and standing for thirty minutes, measuring the distance between the liquid level of the left box body and the laser range finder to be h through the laser range finder 1 Distance h between right box liquid level and laser range finder is measured 2 The length and width of the inner cavity of the left box body are respectively a and b measured by using a graduated scale, and the length and width of the inner cavity of the right box body are respectively a and b because the left box body and the right box body are symmetrical relative to the central symmetry plane of the water tank, so that the moisture content of corn is obtained: moisture (%) =10 3 ×ab(h 2 -h 1 )÷m×100％。
The specific working procedure is as follows:
during operation, the corn 5 is corn particles, the corn particles are evenly divided into a first pile and a second pile through an electronic balance, the mass of the first pile and the second pile is m, the corn particles of the first pile are put into a grain 5 dryer for drying, the corn particles of the second pile are not dried, then the corn particles of the second pile are respectively poured into the left box 12 and the right box 13 in an equal amount through a measuring cylinder, the corn particles of the first pile after drying are simultaneously put into the first net 6 and immersed in the water of the left box 12, the corn particles of the second pile which are not dried are put into the second net 7 and immersed in the water of the right box 13, the first box opening 14 is tightly screwed and sealed by the first sealing cover 2, the second box opening 16 is tightly screwed and tightly sealed by the second sealing cover 3, the inside of the left box 12 and the inside of the right box 13 are simultaneously pressurized by an air pump through an air passage 11, the corn particles of the first pile and the second pile are promoted to sink, and the corn particles of the first pile can be acceleratedCorn particles absorb moisture and accelerate corn particles of a second pile to absorb moisture, after the corn particles of a first pile and the corn particles of a second pile are soaked for thirty minutes simultaneously, the first sealing cover 2 and the second sealing cover 3 are opened simultaneously, the first sealing cover 2 drives the left end of the first net 6 to bring the corn particles of the first pile out of the water surface, the second sealing cover 3 drives the right end of the second net 7 to bring the corn particles of the second pile out of the water surface, and after the corn particles of the second pile and the corn particles of the second pile are kept stand for thirty minutes simultaneously, the distance between the liquid level of the left box 12 and the laser distance meter 4 is measured by the laser distance meter 4 to be h 1 Distance h between the liquid surface of right box 13 and laser range finder 4 is measured 2 The length and width of the inner cavity of the left box body 12 are respectively a and b measured by using a graduated scale, and the length and width of the inner cavity of the right box body 13 are respectively a and b because the left box body 12 and the right box body 13 are symmetrical relative to the central symmetry plane of the water tank 1, so that the moisture content of corn is obtained: moisture (%) =10 3 ×ab(h 2 -h 1 ) M×100%; the surface of the first trapezoidal thread 15 is provided with the rubber layer 18, so that the first box opening 14 is more tightly connected with the first sealing cover 2, and the air tightness is better; the surface of the second trapezoidal thread 17 is provided with a rubber layer 18, so that the connection between the second box opening 16 and the second sealing cover 3 is tighter, and the air tightness is better; when the first hole 23 is pressurized and filled with gas, as the outer side material of the first sealing cover 2 is soft rubber material and the inner side material of the first sealing cover 2 is hard rubber material, the outer side deformation of the first sealing cover 2 is larger than that of the inner side of the first sealing cover 2, the third trapezoidal thread 21 consists of a piece of discontinuous trapezoidal bulge 22, so that the third trapezoidal thread 21 can expand outwards, the trapezoidal bulge 22 is propped outwards and is tighter at the outer side of the first sealing cover 2, the connection between the first sealing cover 2 and the first box opening 14 is tighter, the second sealing cover 3 is identical with the first sealing cover 2, and details are omitted; the left end of the first net 6 is wrapped with a soft rubber layer, the soft rubber layer is easy to deform when being extruded, when the left end of the first net 6 is clamped by the first sealing cover 2 and the first box opening 14, the air tightness between the first sealing cover 2 and the first box opening 14 is reduced less, the friction between the soft rubber layer and the first sealing cover 2 is large, and the soft rubber layer is not easy to fall off; the right end of the second net 7 is also wrapped with a soft rubber layer, and the condition of the second net 7 is thatThe first net 6 is similar and will not be described in detail herein; when the left end of the first net 6 is extruded by the first sealing cover 2 and the first opening, the gas at the upper end of the first air cavity is extruded into the lower end of the first air cavity, and the gas in the first air cavity is extruded from the first opening, so that the air pressure in the left box 12 is increased, and the moisture absorption of corn particles in the first pile in the left box 12 is promoted; the second air cavity is arranged in the second net 7, a second opening is formed in the lower portion of the second net 7, the second air cavity is identical to the first net 6 in condition, and details are omitted herein; the inner walls of the left box body 12 and the right box body 13 are coated with the super-hydrophobic coating, so that the inner walls of the left box body 12 and the right box body 13 are not stained with water, the first net 6 and the second net 7 are also coated with the super-hydrophobic coating, the first net 6 and the second net 7 are not stained with water easily, after corn particles are lifted and kept stand for thirty minutes, more water stained on the inner walls of the left box body 12 and water stained on the first net 6 flow into the liquid level of the left box body 12, more water stained on the inner walls of the right box body 13 and water stained on the first net 6 flow into the liquid level of the right box body 13, and errors of total volumes of water in the left box body 12 and the rear box body after standing are reduced, so that the moisture content of the corn particles is measured more accurately.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (5)
1. The utility model provides a cereal moisture quick determination appearance, includes scale, graduated flask, electronic balance, air pump and cereal (5) drying-machine, the scale is used for measuring length; the measuring cylinder is used for measuring the volume of water; the electronic balance is used for weighing the mass of the grains (5); the air pump is used for pressurizing; the grain (5) dryer is used for drying grains (5); the method is characterized in that: the device comprises a water tank (1), a first sealing cover (2), a second sealing cover (3), a range finder (4), grains (5), an air passage (11), a first net (6) and a second net (7); the water tank (1) comprises a left tank body (12) and a right tank body (13), and the left tank body (12) and the right tank body (13) are symmetrical with respect to the central plane of the water tank (1); the air passage (11) is arranged at the upper part of the middle of the water tank (1), the air passage (11) is communicated with the left tank body (12) and the right tank body (13), and the center of the air passage (11) is connected with the air pump; the upper end of the left box body (12) is provided with a first box opening (14), a first trapezoidal thread (15) is formed in the inner side of the first box opening (14), and a rubber layer (18) is arranged on the surface of the first trapezoidal thread (15); the first box opening (14) is connected with the first sealing cover (2) through threads; the upper end of the right box body (13) is provided with a second box opening (16), a second trapezoidal thread (17) is formed in the inner side of the second box opening (16), and a rubber layer (18) is arranged on the surface of the second trapezoidal thread (17); the second box opening (16) is connected with the second sealing cover (3) through threads; the inside of the left box body (12) is provided with a first net (6), grains (5) are filled in the first net (6), meshes of the first net (6) are smaller than grains of the grains (5), the right end of the first net (6) is fixedly connected with the right end of a first box opening (14), and the left end of the first net (6) is fixedly connected with the left end of a first sealing cover (2); the inside of the right box body (13) is provided with a second net (7), grains (5) which are equal to those in the first net (6) are arranged in the second net (7), the left end of the second net (7) is fixedly connected with the left side of a second box opening (16), the right end of the second net (7) is fixedly connected with the right end of a second sealing cover (3), and meshes of the second net (7) are smaller than grains (5); the range finders (4) are respectively fixedly connected to the upper end face inside the left box body (12) and the upper end face inside the right box body (13), and the heights of the two range finders (4) are the same.
2. The rapid grain moisture meter of claim 1, wherein: the inner side of the first sealing cover (2) is made of a hard rubber material, and the outer side of the first sealing cover (2) is made of a soft rubber material; the outside of sealed lid (2) No. one is provided with No. three trapezoidal screw thread (21), no. three trapezoidal screw thread (21) comprises a trapezoidal protruding (22) that blocks are interrupted, the rear side of trapezoidal protruding (22) is provided with a hole (23), a hole (23) and the lower extreme intercommunication of sealed lid (2) No. one, the number of a hole (23) is six at least, a hole (23) along sealed lid (2) circumference evenly distributed.
3. The rapid grain moisture meter of claim 2, wherein: the left end of the first net (6) is wrapped with a soft rubber layer; the right end of the second net (7) is also wrapped with a soft rubber layer.
4. A grain moisture rapid tester according to claim 3, wherein: the inner walls of the left box body (12) and the right box body (13) are coated with super-hydrophobic paint, so that the inner walls of the left box body (12) and the right box body (13) are not easy to be stained with water; the first net (6) and the second net (7) are also coated with super-hydrophobic coating, so that the first net (6) and the second net (7) are not easy to be stained with water.
5. A grain moisture rapid tester according to any one of claims 1 to 4, characterised in that: the method comprises the following steps:
s1: the corn is taken as corn particles, the corn particles are uniformly and equally divided into a first pile and a second pile through an electronic balance, the mass of the first pile and the mass of the second pile are m, the corn particles of the first pile are put into a grain dryer for drying at the temperature of 105 ℃ until the weight of the corn particles of the first pile is not reduced, and the corn particles of the second pile are not dried;
s2: measuring an equal amount of corn particles in a first pile, pouring the corn particles into a left box body and a right box body respectively through a measuring cylinder, putting the dried corn particles in a first net and immersing the corn particles in water of the left box body, putting the corn particles in a second net and immersing the corn particles in water of the right box body, tightly sealing the first box opening by a first sealing cover in a screwing way, tightly sealing the second box opening by a second sealing cover in a screwing way, simultaneously pressurizing the left box body and the right box body through an air passage through an air pump, promoting the corn particles in the first pile and the second pile to sink, accelerating the corn particles in the first pile to absorb water, accelerating the corn particles in the second pile to absorb water, and simultaneously immersing the corn particles in the first pile and the corn particles in the second pile for thirty minutes;
s3: after the corn particles of the first pile and the corn particles of the second pile are soaked for thirty minutes simultaneously, the first sealing cover and the second sealing cover are opened simultaneously, the first sealing cover drives the left end of the first net to bring the corn particles of the first pile out of the water surface, the second sealing cover drives the right end of the second net to bring the corn particles of the second pile out of the water surface, and the second net stands for thirty minutes simultaneously;
s4: after taking corn particles of a first pile and corn particles of a second pile out of the water surface and standing for thirty minutes, measuring the distance between the liquid level of the left box body and the laser range finder to be h 1, measuring the distance between the liquid level of the right box body and the laser range finder to be h 2, measuring the length and the width of the inner cavity of the left box body to be a and b respectively by using a graduated scale, and obtaining the moisture content of corn because the length and the width of the inner cavity of the right box body are a and b respectively because the left box body and the right box body are symmetrical relative to the central symmetry plane of the water tank: moisture% = 10 3 ×ab(h 2 -h 1 )÷m×100％。
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