CN115201047B - Volume weight measuring equipment for grains - Google Patents
Volume weight measuring equipment for grains Download PDFInfo
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- CN115201047B CN115201047B CN202211122670.1A CN202211122670A CN115201047B CN 115201047 B CN115201047 B CN 115201047B CN 202211122670 A CN202211122670 A CN 202211122670A CN 115201047 B CN115201047 B CN 115201047B
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- 238000005303 weighing Methods 0.000 claims abstract description 41
- 238000005259 measurement Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims description 19
- 238000007790 scraping Methods 0.000 claims description 17
- 238000007599 discharging Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 8
- 230000008676 import Effects 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- 235000013339 cereals Nutrition 0.000 description 85
- 238000012546 transfer Methods 0.000 description 16
- 238000001514 detection method Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000004464 cereal grain Substances 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000013100 final test Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/02—Food
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/02—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume
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- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Dispersion Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
- Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
Abstract
The invention discloses volume weight measuring equipment for grains, which comprises a weighing disc, wherein the weighing disc is provided with a weighing hole; rong Chongtong, the bulk-weight barrel is supported on the weighing plate, the upper end of the bulk-weight barrel is open, so as to form a first feed inlet above the bulk-weight barrel, and the radial direction of the first feed inlet extends along the horizontal direction; the exhaust assembly comprises an air suction port for sucking air, and the air suction port is communicated with the interior of the weight barrel; wherein, when the first feed inlet feeds, the air suction port sucks air. According to the volume weight measuring equipment for the grains, air is less in air among the grains when the grains enter the volume weight barrel and air is sucked at the same time, and therefore the error between the volume weight measuring result and the standard measuring result is smaller. In addition, the exhaust assembly is easy to arrange compared with a heavy exhaust block, so that grains in the volume weight barrel can be conveniently discharged, and the volume weight measurement can be automatically implemented.
Description
Technical Field
The invention relates to the field of grain weighing, in particular to volume weight measuring equipment for grains.
Background
The volume weight is one of the important indexes for evaluating the quality of grain grains, and the volume weight is a physical index representing the weight of a certain volume of grain, for example, the weight of grain and oil seeds in unit volume, and is expressed in grams per liter (g/L). The detection method and standard of the volume weight are already defined in the national standard GB/T5498-2013 grain and oil inspection volume weight determination and the GB/T35864-2018 grain and oil machinery inspection grain volume weight device. In the national standard, in order to avoid that the inside air of cereal sample is more to influence final testing result, when the feeding, adopt the exhaust piece to exhaust the back, weigh the cereal after exhausting. However, the standard instrument is complex in operation and difficult to realize automatic detection and rapid detection.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, the invention proposes a volume-weight measuring device for grains.
According to the invention, the volume weight measuring device for the grains comprises a weighing tray; rong Chongtong, the bulk-weight barrel is supported on the weighing plate, the upper end of the bulk-weight barrel is open, so as to form a first feed inlet above the bulk-weight barrel, and the radial direction of the first feed inlet extends along the horizontal direction; the exhaust assembly comprises an air suction port for sucking air, and the air suction port is communicated with the interior of the weight barrel; wherein, when the first feed inlet feeds, the air suction port sucks air.
According to the volume weight measuring equipment for the grains, air is less in air among the grains when the grains enter the volume weight barrel and air is sucked at the same time, and therefore the error between the volume weight measuring result and the standard measuring result is smaller. In addition, the exhaust assembly is easy to arrange compared with a heavy exhaust block, so that grains in the volume-weight barrel can be conveniently discharged, and the volume-weight measurement can be automatically implemented.
According to some embodiments of the invention, further comprising: the upper end of the switching barrel is opened to form a feeding hole of the switching barrel, and the lower end of the switching barrel is opened to form a switching port; the moving assembly is connected with the transfer barrel and is suitable for moving the transfer barrel along the radial direction of the transfer port so as to enable the transfer barrel to be located at a first position and a second position; when the switching bucket is located the first position, the border of first feed inlet with the border butt of switching mouth when the switching bucket is located the second position, the border of first feed inlet with the border of switching mouth breaks away from.
According to some embodiments of the invention, the moving assembly comprises a slide rail and a slide block, the slide rail is in sliding fit with the slide block, the slide block is connected with the adapter barrel, and the slide rail extends along the radial direction of the adapter port.
According to some embodiments of the invention, the first feed opening and the adapter are both circular, and the diameter of the adapter is greater than or equal to the diameter of the first feed opening.
According to some embodiments of the invention, further comprising: scrape the material fishplate bar, the upper end of scraping the material fishplate bar opens and imports in order to form the clout, the clout import is less than in vertical direction first feed inlet.
According to some embodiments of the invention, the bulk bucket comprises: the bulk weight bucket comprises a bulk weight bucket body and a bulk weight bucket bin door, wherein the upper end of the bulk weight bucket body is opened to form the first feeding hole, the lower end of the bulk weight bucket body is opened to form a discharging hole, and the bulk weight bucket bin door can selectively close the discharging hole.
According to some embodiments of the invention, the weighing device further comprises a bin gate switch module, the bulk weight barrel body, the Rong Chongtong bin gate and the bin gate switch module are all mounted on the weighing tray, and the bin gate switch module controls the bulk weight barrel bin gate to selectively close the discharge hole.
According to some embodiments of the invention, the exhaust assembly is mounted to the weighing pan, the Rong Chongtong door forms a first air duct on an upper surface thereof, the weighing pan forms a second air duct thereon, the first air duct communicates with the second air duct, and the suction port communicates with the second air duct.
According to some embodiments of the invention, further comprising a position sensor for detecting a position of the adaptor barrel.
According to some embodiments of the invention, the suction port sucks air at a preset suction speed, the preset suction speed is Q, Q satisfies: q = (V/T) × ln (P0/P1); wherein P0 is the initial pressure in the containing cavity, P1 is the preset pressure, V is the volume of the weight barrel, and T is the time required for reaching the preset pressure.
Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the invention.
Drawings
The above and/or additional aspects and advantages of embodiments of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a volume-weight measuring device according to some embodiments of the present invention;
FIG. 2 is a cross-sectional view of a right side view of a bulk-weight measuring device according to some embodiments of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at I;
FIG. 4 is a front view of a bulk-weight measurement device according to some embodiments of the invention;
FIG. 5 is a bottom view of a bulk-weight measuring device according to some embodiments of the invention;
FIG. 6 is a schematic perspective view of a bulk-weight measurement device according to some embodiments of the invention;
FIG. 7 is a right side view of a bulk-weight measurement device according to some embodiments of the invention;
FIG. 8 is a workflow diagram of volume-weight measurement according to some embodiments of the invention.
Reference numerals:
a volume-weight measuring device 1000;
a bulk weight bucket 1; a first feed port 11; rong Chongtong door 12; a bin gate switch module 19; an exhaust assembly 100; a first air intake 101; a second suction port 102;
a weighing pan 2; a scraping connecting plate 4; a weighing fixing base 5; a discharge hopper 7; a transfer barrel 8; a transfer barrel feed port 81; an adapter 82; a waste bin 22;
a slide rail 32; a slider 33; a first load cell 301; a second load cell 302; a first position sensor 561; a second position sensor 562.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1 to 7, the volume-weight measuring apparatus 1000 of the present invention includes a weighing pan 2, a volume-weight bucket 1, and an air discharge assembly 100. The upper end of the unit weight bucket 1 is opened to form first feed inlet 11 in the top of unit weight bucket 1, the radial horizontal direction that follows of first feed inlet 11 extends, and the unit weight cylindric becomes inside cavity and the open structure in upper end promptly, and the inside of unit weight section of thick bamboo is used for holding the cereal grain of the unit weight that awaits measuring. Cereal gets into in the unit weight bucket 1 from first feed inlet 11, and after cereal reaches certain quantity, for example, cereal and 11 border flushes of first feed inlet, although can weigh the cereal in the unit weight bucket 1 this moment, however, the mode of above-mentioned feeding can make between the cereal in the unit weight bucket 1 air more, if weigh the cereal in the above-mentioned unit weight bucket 1, can have great error with the unit weight of the method measurement of standard measurement unit weight.
The volume-weight measuring apparatus according to the present invention, as shown in fig. 2, further comprises an exhaust assembly 100, the exhaust assembly 100 comprising a suction port for sucking air, the suction port communicating with the inside of the volume-weight bucket 1; wherein, when the first feeding hole 11 feeds, the suction port sucks air. It will be appreciated that the air between the grains is reduced by sucking the grains while feeding the grains into the bulk-weight barrel 1, and the error between the measurement result of the bulk weight and the standard measurement result is reduced. In addition, the exhaust assembly 100 is easy to arrange compared with a heavy exhaust block, so that grains in the volume-weight barrel 1 can be conveniently discharged, and the volume-weight measurement can be automatically implemented.
As shown in fig. 2-5, in some embodiments, the volume-weight bucket 1 comprises: the volume-weight barrel comprises a volume-weight barrel body and a volume-weight barrel bin door 12, wherein the upper end of the volume-weight barrel body is opened to form a first feeding hole 11, the lower end of the volume-weight barrel body is opened to form a discharging hole, and the volume-weight barrel bin door 12 can selectively close the discharging hole. In some embodiments, the bulk-weight barrel body is mounted on the weighing plate 2, the bulk-weight barrel bin gate 12 is rotatably mounted on the weighing plate 2, the discharge port is selectively sealed by controlling the bulk-weight barrel bin gate 12 through the bin gate switch module 19, the bin gate switch module 19 is mounted on the weighing plate 2, and the weighing plate 2 is provided with an avoiding part for avoiding the bulk-weight barrel bin gate 12. In other examples, the bulk-weight bucket door 12 may also be moved in a horizontal direction to effect opening of the bulk-weight bucket door 12.
As shown in fig. 1-3, in some embodiments, the upper surface of the bulk-weight bucket bin door 12 forms a first air channel, the weighing pan 2 forms a second air channel, the first air channel is communicated with the second air channel, and the air suction opening of the exhaust assembly 100 is communicated with the second air channel. The volume-weight measuring device may be provided with two suction ports, which are the first suction port 101 and the second suction port 102, respectively, or may be provided with a plurality of suction ports formed by a plurality of air-extracting members arranged at intervals in the circumferential direction of the volume-weight bucket 1. It can be understood that, breathe in simultaneously through a plurality of pieces of bleeding, discharge the air in the unit weight bucket 1 from the second wind channel through first wind channel, because first wind channel forms in the bottom of unit weight bucket 1 its can be fine with the air in the unit weight bucket 1 from last down discharge, 1 limit feeding of unit weight bucket is inhaled promptly for the air between the cereal in the unit weight bucket 1 is less, and then makes the measuring result of unit weight less with standard measuring's result error. It is worth noting that, compared with the prior art, the exhaust block is adopted for exhausting, the exhaust block is arranged at the bottom of the volume-weighted barrel, the diameter of the exhaust block is equal to that of the volume-weighted barrel, and the exhaust block has certain influence on the automatic discharging of the volume-weighted barrel. In the invention, the arrangement of the exhaust assembly 100 does not influence the arrangement of the volume-weight barrel bin door 12, thereby being beneficial to the automation of volume-weight equipment.
The embodiment of the invention can also simulate the exhaust process of the exhaust block in the standard volume weight measurement process by adjusting the air suction speed. In the standard volume-weight measuring process, the exhaust block and the grains fall into the volume-weight barrel together to avoid more air among the grains in the volume-weight barrel.
In some embodiments, the exhaust assembly 100 exhausts at a predetermined intake rate, Q, which satisfies: q = (V/T) × ln (P0/P1);
wherein, P0 is the initial pressure in the containing cavity, and the unit is Pa (Pa), P1 is the preset pressure, the unit is Pa (Pa), V is the volume of the weight barrel 1, the unit is liter (L), T is the time needed to reach the preset pressure, and the unit is second (S).
Wherein the preset pressure P1 is obtained by simulating the exhaust process of the exhaust block, and the mass of the exhaust block is m Exhaust block In units of grams (g); the diameter of the exhaust block is d Exhaust block The unit is millimeter (mm), and the cross-sectional area S = pi (d) of the exhaust block can be calculated through a formula Exhaust block /2） 2 In units of (mm) 2 ) The inner diameter of the bulk density bucket 1 is d Rong Chongtong The unit is millimeter (mm), the height of the volume weight barrel 1 is h, and the unit is millimeter (mm);
when the exhaust block falls from the top to the bottom of the barrel cavity of the heavy barrel 1, the formed pressure W meets the condition that W = G Exhaust block =m Exhaust block * g, wherein g is approximately equal to 10N/KG;
the time T for the exhaust block to fall from the top to the bottom of the barrel cavity of the heavy barrel 1 is satisfied
；
The preset pressure P1= P0-W/S is obtained after the exhaust assembly performs air extraction; wherein, the pressure formed at the bottom of the exhaust block is W/S;
when the grains fall into the vertical direction, the distance from the grains is h, the exhaust block is a cylindrical body, and the sectional area of the exhaust block is S;
the time T required to reach the preset pressure is calculated by the following formula:
the preset pressure P1 is calculated by the following formula:
P1=P0-W/S；
p0 is the initial pressure in the containing cavity, the sectional area of the S exhaust block is S, W is the pressure when the exhaust block falls into the grains, and the pressure is calculated by the following formula:
W=G exhaust block =m Exhaust block *g，m Exhaust block Is the mass of the exhaust block.
Mass m of exhaust block Exhaust block 450 g, diameter d Exhaust block 88 mm; when the inner circle diameter of the bucket 1 is 88 mm and the height is 162.5 mm, the calculation process is as follows:
the time required for the exhaust block to fall from the top is
；
The sectional area of the exhaust block is S = Pi (d) Exhaust block /2） 2 =π（88/2） 2 *0.001 2 ≈0.00608m²；
Pressure W = G when the exhaust block falls into the grain Exhaust block =m Exhaust block * g =450 × 0.001 × 10=4.5N, wherein (g ≈ 10N/KG); w = P × S0.1, it can be deduced that P = W/(S × 0.1) = 4.5/(0.00608 × 0.1) ≈ 7400pa;
the preset pressure P1= P0-P =101325-7400=93925Pa; wherein P0 is at atmospheric pressure 101325pa;
the preset suction speed Q = (V/T) × ln (P0/P1) = (1/0.18) × ln (101325/93925) ≈ 0.4213L/s ≈ 25.28L/min.
It is understood that, in the present invention, the discharge rate can be set to 25.28L/min, and the suction is performed while feeding, and the measured volume weight is less different from the volume weight measured by the standard method. Of course, the exhaust speed in the present invention may be higher than 25.28L/min, and the air in the bucket 1 will be less, but may be slightly smaller than 25.28L/min, such as 25L/min.
Above-mentioned can know, 1 limit feeding of unit weight bucket is bled simultaneously, when the quantity of cereal reaches a certain quantity in 1 unit weight bucket, for example, stop the feeding when 11 border flushes with first feed inlet. In some embodiments, the sensor detects whether the grain is flush with the edge of the first feed opening 11.
In other embodiments, as shown in fig. 1, the bulk-weight barrel further comprises an adapter barrel 8, and the adapter barrel 8 is used for scraping, so that the excess grains are removed from the bulk-weight barrel 1 and are flush with the edge of the first feed opening 11.
Specifically, the upper end of the adaptor tub 8 is opened to form the adaptor tub feed port 81, and the lower end of the adaptor tub 8 is opened to form the adaptor port 82; the transfer bucket 8 is connected with a moving assembly, and the moving assembly is suitable for moving the transfer bucket 8 along the radial direction of the transfer port so as to enable the transfer bucket 8 to be located at a first position and a second position; when the adapter barrel 8 is located at the first position, the edge of the first feed inlet 11 is abutted against the edge of the adapter 82, and when the adapter barrel 8 is located at the second position, the edge of the first feed inlet 11 is separated from the edge of the adapter 82. In some embodiments, as shown in fig. 1, the moving assembly includes a slide rail 32 and a slide block 33, the slide rail 32 is slidably engaged with the slide block 33, the slide block 33 is connected with the adaptor barrel 8, and the slide rail 32 extends along a radial direction of the adaptor port 82. That is, the transferring barrel 8 moves along a straight line, so that the excessive grains in the transferring barrel 8 can be conveniently received. In some embodiments, a position sensor is also included for detecting the position of the adaptor tub 8. As shown in fig. 1, the position sensors include a first position sensor 561 and a second position sensor 562, and the position of the transit bucket 8 is determined by the first position sensor 561 and the second position sensor 562. The first position sensor 561 is used to detect whether the transit barrel 8 is in the first position, and the second position sensor 562 is used to detect whether the transit barrel 8 is in the second position.
It can be understood that, when switching bucket 8 was in first position, the border of first feed inlet 11 and the border butt of switching mouth 82 can be through switching bucket 8 feeding in to capacity weight bucket 1, and switching bucket 8 and capacity weight bucket 1 can hold sufficient cereal, avoid the not enough condition of cereal in the capacity weight bucket 1. When the amount of grains in the volume-weight barrel 1 is large, for example, the grains protrude out of the first feed port 11, the protruding grains are located in the switching barrel 8, the switching barrel 8 moves along the radial direction of the switching port, so that the redundant grains can be moved out of the volume-weight barrel 1, and the grains in the volume-weight barrel 1 are flush with the first feed port 11.
The inventor discovers that the mode of scraping the flitch is adopted to scrape the material among the prior art, because cereal can form the tapered shape when falling, scrapes the flitch and can cause cereal to leave the cavity around 1 surface of unit weight bucket very probably when scraping the material, causes the result to hang down partially. When the switching barrel 8 adopted by the embodiment of the invention is used for feeding, the conical shape formed by the falling grains is just positioned in the switching barrel 8, and the grains in the volume-weight barrel 1 are in a compact state without cavities, so that the condition that the result is lower is greatly avoided. Certainly, the more cereal in the switching bucket 8, when adopting switching bucket 8 to scrape the material, the more difficult cavity that leaves all around of first feed inlet 11 of unit weight bucket 1 further improves the precision of unit weight measurement. For example, 1kg of grain may be transferred from the transfer barrel 8 into the bucket 1, the standard capacity of the bucket 1 is generally 1 liter, the 1 liter capacity of the bucket 1 is generally less than 1kg of grain, and the excess grain is scraped by the transfer barrel 8. Of course, the weight of the grains may be more than 1kg, for example, 1.5kg, 2kg, and the excess grains are all located in the adapter bucket 8, and when the more grains are located in the adapter bucket 8, the less cavity is left around the first feeding hole 11 of the volume-weight bucket 1. Furthermore, the invention can also be used for non-standard bulk-weight measurements, e.g. bulk-weight buckets 1 with a capacity of more or less than 1 litre. Further, the object to be accommodated in the bulk container 1 of the present invention is not limited to grains such as wheat, corn, soybean, etc.
In some embodiments, a soft material may be used at the connection between the adaptor barrel 8 and the bulk-weight barrel 1, and in other embodiments, a rigid material may be used at the connection between the adaptor barrel 8 and the bulk-weight barrel 1. The flatness of the scraping material made of soft material is slightly worse than that of the rigidity, but the material is not easy to clamp; the rigid material is soft and is easy to clamp materials, but the scraping surface is smooth.
In some embodiments, the first inlet 11 of the volume-weight barrel 1 and the adapter 82 of the adapter barrel 8 are both circular, and the diameter of the adapter 82 is greater than or equal to the diameter of the first inlet 11. If the diameter of the adapter 82 is smaller than the diameter of the first inlet 11, the entire volume of the volumetric barrel 1 cannot be filled. The shape of the adapter barrel 8 is not limited, and may be circular or square, and the like, and the shape of the feed port 81 of the adapter barrel 8 is not specifically limited, and may be circular or square, and the like, but the adapter port 82 of the adapter barrel 8 needs to be the same as the shape of the first feed port 11 of the bulk-weight barrel 1, and is circular. The barrel cavity of the adapter barrel 8 can be in a horn shape, and the upper diameter and the lower diameter can also be equal.
In some embodiments, as shown in fig. 1 and 6, further comprising: scrape material fishplate bar 4, the upper end of scraping material fishplate bar 4 opens and imports in order to form the clout, and the clout import is less than first feed inlet 11 in vertical direction, and the clout import is used for accepting unnecessary cereal.
Specifically, when switching bucket 8 moved to the second position from the first position, the border of first feed inlet 11 broke away from with the border of switching mouth 82, with the cereal separation in switching bucket 8 and the volume-weighted bucket 1, then at the in-process of separation, the cereal in switching bucket 8 can be followed switching bucket 8 and dropped to scraping in the material fishplate bar 4 for unnecessary cereal shifts out from the interior of the heavy bucket 1, makes the cereal in the volume-weighted bucket 1 and first feed inlet 11 parallel and level. In addition, the adapting barrel 8 can play a certain guiding role for unnecessary grains, so that the grains basically move along the axial direction of the adapting barrel 8, and the grains can easily fall onto the scraping connecting plate 4. Compared with the prior art that the excessive grains are scraped by adopting a scraping plate mode, the invention avoids the technical problems that the grains fall to the place outside the scraping connecting plate 4 to cause environmental pollution or fall into weighing equipment to cause inaccurate weighing because the grains are scraped at a high speed.
In some embodiments, as shown in fig. 4-6, the grain storage device further comprises an outlet hopper 7, wherein the outlet hopper 7 is arranged on the frame, and the outlet hopper 7 is arranged corresponding to the bulk-weight barrel bin door 12 and is used for receiving grains in the bulk-weight barrel 1. After the grains in the volume-weight barrel 1 are weighed, the bin door 12 of the volume-weight barrel is opened, and the grains in the volume-weight barrel 1 can automatically fall into the discharge hopper 7 for collection. Compare among the prior art, the bottom of unit weight bucket has the exhaust piece, and the diameter of exhaust piece equals with the diameter of unit weight bucket, and it can produce certain influence to the automatic discharging of unit weight bucket. In the invention, air is exhausted while feeding, and the arrangement of the exhaust assembly 100 does not influence the arrangement of the volume-weight barrel bin door 12, thereby being beneficial to the automation of volume-weight equipment.
In some embodiments, as shown in fig. 4, a waste hopper 22 is arranged between the discharging hopper 7 and the scraping plate 4, and grains on the scraping plate 4 are transferred to the discharging hopper 7 through the waste hopper 22 for collection. In some embodiments, as shown in fig. 6, the scraper bar 4 is arranged at an angle that facilitates the complete transfer of the grain into the exit hopper 7. In other embodiments, the scraper bar 4 may also be arranged horizontally as shown in fig. 1.
In some embodiments, as shown in fig. 4, the volume-weight measuring apparatus for grains further comprises a grain collecting device (not shown) for collecting grains, which is located below the discharge hopper 7. The grains on the scraping connecting plate 4 can fall into a grain collecting device for collection through the surplus hopper 22 and the discharging hopper 7; after the grains in the volume-weight barrel 1 are weighed, the grain bin door 12 is opened, and the grains in the volume-weight barrel 1 can fall into the grain collecting device through the discharge hopper 7 to be collected.
In some embodiments, as shown in fig. 7, the volume-weight measuring apparatus further comprises a first weighing cell 301 and a second weighing cell 302, the first weighing cell 301 and the second weighing cell 302 are symmetrically arranged, the first weighing cell 301 and the second weighing cell 302 are both mounted on the weighing fixing base 5, the weighing fixing base 5 is arranged on the rack, and the weighing cells are used for weighing the grains in the volume-weight barrel 1 on the weighing plate 2.
As shown in fig. 1-8, the operation flow of the present invention is as follows:
the first position sensor 561 detects that the adapter drum 8 is located at the first position, and then sends out a feeding signal, and when receiving the feeding signal, the exhaust assembly 100 starts to continue to pump air; stopping feeding when the feeding amount is more than 1 KG; after a feeding stopping signal is sent for 5S, the moving assembly controls the transfer barrel 8 to move to scrape materials; when the transfer barrel 8 starts scraping, the exhaust assembly 100 stops exhausting; when the second position sensor 562 detects that the transfer bucket 8 moves to the second position, the weighing plate 2 starts weighing and then outputs the result; after the result is output, the door 12 of the bulk weight barrel is controlled to be opened for clearing; after the bulk-weight barrel bin door 12 is opened for 10s, the weighing controller displays that the value is changed to 0 at the same time, and all moving parts return to the initialization state.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features. In the description of the present invention, "a plurality" means two or more. In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween. In the description of the invention, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A unit weight measuring apparatus for grain, comprising:
a weighing pan (2);
rong Chongtong (1), the Rong Chongtong (1) is supported on the weighing plate (2), the upper end of the Rong Chongtong (1) is opened to form a first feed opening (11) above the weighing bucket (1), and the radial direction of the first feed opening (11) extends along the horizontal direction;
the exhaust assembly (100), the exhaust assembly (100) includes the suction inlet used for drawing in, the said suction inlet communicates with inside of the said container (1);
when the first feeding hole (11) feeds materials, the air suction port sucks air;
the air suction port sucks air at a preset air suction speed, the preset air suction speed is Q, and Q meets the following requirements: q = (V/T) × ln (P) 0 /P 1 )；
Wherein, P 0 Is the initial pressure in the bulk density barrel (1) with the unit of Pa; p 1 Is a preset pressure intensity with the unit of Pa; v is the volume of the bulk weight barrel (1) in liters; t is the time required for reaching the preset pressure intensity, and the unit is s; wherein the preset pressure P 1 Obtained for simulating the exhaust process of the exhaust block, P 1 =P 0 -W/S；P 0 Is atmospheric pressure; w is the pressure formed when the exhaust block falls from the top to the bottom of the barrel cavity of the heavy barrel (1), and W = G Exhaust block =m Exhaust block * g, wherein m Exhaust block The mass of the exhaust block is gram, and g is approximately equal to 10N/kg; s is the cross-sectional area of the exhaust block, S = pi (d) Exhaust block /2） 2 ，d Exhaust block Is the diameter of the exhaust block, and the unit is millimeter; the time T required to reach the preset pressure is calculated by the following formula:
and h is the distance from the grain when the exhaust block falls into the grain along the vertical direction, and the unit is mm.
2. The unit weight measurement device according to claim 1, characterized by further comprising:
the upper end of the adapting barrel (8) is opened to form an adapting barrel feeding hole (81), and the lower end of the adapting barrel (8) is opened to form an adapting port (82);
a moving assembly, wherein the switching barrel (8) is connected with the moving assembly, the moving assembly is suitable for moving the switching barrel (8) along the radial direction of the switching port (82) so as to enable the switching barrel (8) to be located at a first position and a second position;
when switching bucket (8) are located the first position, the border of first feed inlet (11) with the border butt of switching mouth (82), when switching bucket (8) are located the second position, the border of first feed inlet (11) with the border of switching mouth (82) breaks away from.
3. The unit weight measuring device according to claim 2, characterized in that the moving assembly comprises a slide rail (32) and a slider (33), the slide rail (32) is slidably engaged with the slider (33), the slider (33) is connected with the adapter barrel (8), and the slide rail (32) extends along a radial direction of the adapter port (82).
4. The unit weight measuring device according to claim 2, wherein the first inlet (11) and the adapter (82) are both circular, and the diameter of the adapter (82) is greater than or equal to the diameter of the first inlet (11).
5. The unit weight measurement device according to claim 2, characterized by further comprising: scrape material fishplate bar (4), the upper end of scraping material fishplate bar (4) opens in order to form the clout import, the clout import is less than in vertical direction first feed inlet (11).
6. The bulk-weight measurement apparatus according to claim 1, wherein the Rong Chongtong (1) comprises: the bulk-weight barrel comprises a bulk-weight barrel body and a bulk-weight barrel bin door (12), wherein the upper end of the bulk-weight barrel body is opened to form the first feeding hole (11), the lower end of the bulk-weight barrel body is opened to form a discharging hole, and the Rong Chongtong bin door (12) can selectively close the discharging hole.
7. The volume-weight measuring equipment according to claim 6, characterized by further comprising a bin gate switch module (19), wherein the volume-weight barrel body, the Rong Chongtong bin gate (12) and the bin gate switch module (19) are all mounted on the weighing tray (2), and the bin gate switch module (19) controls the volume-weight barrel bin gate (12) to selectively close the discharge hole.
8. The unit weight measuring device according to claim 7, wherein the exhaust assembly (100) is mounted to the weighing pan (2), the Rong Chongtong door (12) has an upper surface forming a first air duct, the weighing pan (2) has a second air duct formed thereon, the first air duct communicates with the second air duct, and the suction port communicates with the second air duct.
9. A unit weight measuring device according to any of claims 2-5, characterized by further comprising a position sensor for detecting the position of the adapter tub (8).
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