CN211346293U - Grain drying system - Google Patents
Grain drying system Download PDFInfo
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- CN211346293U CN211346293U CN201922275033.8U CN201922275033U CN211346293U CN 211346293 U CN211346293 U CN 211346293U CN 201922275033 U CN201922275033 U CN 201922275033U CN 211346293 U CN211346293 U CN 211346293U
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Abstract
The utility model belongs to the technical field of cereal moisture detects, specifically provide a cereal drying system, including the stoving box, be equipped with the heater in the stoving box, still include cereal moisture detecting element, cereal moisture detecting element includes positive electrode, negative electrode and signal output port, and the universal meter concatenates with the one end of negative electrode and forms the return circuit, encloses between the other end of positive electrode and the other end of negative electrode to close to form and is used for through the detection space of cereal with detection cereal resistance, and signal output port is connected with the heater electricity. In the grain slowly reachs the stoving case after through detecting the space, through the resistance of universal meter demonstration grain, whether reach standard through the resistance alright aassessment grain moisture content, if moisture is too much then open the heater and heat the stoving can grain. The system reduces manual intervention after the moisture meter test result is alarmed, and improves the automation control degree of the drying system; and is energy-saving and environment-friendly.
Description
Technical Field
The utility model belongs to the technical field of cereal moisture detects, concretely relates to cereal drying system.
Background
China is wide in regions and high in grain yield, and according to statistics, the rotten loss of grains reaches 500-1500 ten thousand tons every year in China, and the rotten loss of grains is estimated to account for 1.5-3% of the total yield of grains. The safe grain storage has a moisture content of 12-13%, so grain drying plays a very important role in grain processing. Cereal moisture detection device is at cereal drying in-process real-time supervision cereal moisture to prevent that the moisture content is not up to standard after the cereal is dried, influence cereal storage yield.
Some grain moisture detectors are also available in the market at present, and some grain moisture detectors are independent devices, can display and set a target moisture value through an LCD (liquid crystal display) screen of the device, and trigger photoelectric or sound alarm after detecting that grains reach the target value; some are to removing machine-carried moisture to detect, will detect data transfer thing networking cloud platform. The equipment has certain limitation on the use of industrial automatic control in a large-scale grain drying system, can only realize a single grain moisture detection function, has single function, and has certain limitation on market popularization degree.
Disclosure of Invention
The utility model aims at overcoming the unable cereal moisture that realizes among the prior art and detecting stoving integration problem.
Therefore, the utility model provides a cereal drying system, including the stoving box, be equipped with the heater in the stoving box, still include cereal moisture detecting element, cereal moisture detecting element includes positive electrode, negative electrode and signal output port, the one end of positive electrode with the one end of negative electrode concatenates through the universal meter and forms the return circuit, enclose between the other end of positive electrode and the other end of negative electrode and form the detection space that is used for extrudeing through cereal in order to detect cereal resistance, signal output port with the heater electricity is connected;
the grain inlet is arranged above the detection space, and the lower part of the detection space is communicated with the drying box body.
Preferably, the positive electrode and the negative electrode are respectively a positive rotating drum and a negative rotating drum, and the positive rotating drum and the negative rotating drum are arranged in parallel at intervals and rotate synchronously to form a detection space for grains to extrude and pass through.
Preferably, the grain moisture detection unit comprises a housing, the positive electrode rotary drum and the negative electrode rotary drum both penetrate out of the housing from inside to outside, and the positive electrode rotary drum and the negative electrode rotary drum which extend out of the housing synchronously rotate to form a detection space for grains to extrude and pass through.
Preferably, a positive electrode scraping blade and a negative electrode scraping blade are fixedly arranged at two ends of the shell, which are far away from the detection space, respectively, the positive electrode scraping blade abuts against the outer surface of the positive electrode rotating drum, and the negative electrode scraping blade abuts against the outer surface of the negative electrode rotating drum.
Preferably, the positive pole rotary drum or the negative pole rotary drum is connected with a driving motor.
Preferably, the driving motor adopts a PWM control driving circuit.
Preferably, a transit bin is arranged below the detection space, an inlet of the transit bin is positioned below the detection space, and an outlet of the transit bin is connected with the drying box body.
Preferably, a bell mouth is arranged above the detection space, and the lower end of the bell mouth is positioned right above the detection space.
Preferably, a temperature sensor is arranged beside the detection space, and the temperature sensor is electrically connected with the heater.
Preferably, the system further comprises a control board and a touch screen, the multimeter and the temperature sensor are respectively connected with the signal inlet end of the control board, and the touch screen and the heater are respectively connected with the signal outlet end of the control board.
The utility model has the advantages that: the utility model provides a cereal drying system, including the stoving box, be equipped with the heater in the stoving box, still include cereal moisture detecting element, cereal moisture detecting element includes positive electrode, negative electrode and signal output port, the one end of positive electrode with the one end of negative electrode concatenates through the universal meter and forms the return circuit, enclose between the other end of positive electrode and the other end of negative electrode and form the detection space that is used for passing through cereal in order to detect cereal resistance, signal output port with the heater electricity is connected; the grain inlet is arranged above the detection space, and the lower part of the detection space is communicated with the drying box body. Reach the stoving incasement after slowly passing through the detection space with cereal, positive electrode and negative electrode lean on respectively to lean on cereal both ends switch-on and form the return circuit, then show the resistance of cereal through the universal meter, through the resistance alright assess whether up to standard of cereal moisture content, if moisture is too much then open the heater to cereal heat drying can. The system reduces manual intervention after the moisture meter test result is alarmed, and improves the automation control degree of the drying system; and is energy-saving and environment-friendly.
The present invention will be described in further detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic block diagram of the grain drying system of the present invention;
fig. 2 is an explosion structure schematic diagram of the grain drying system of the utility model.
Description of reference numerals: the drying box comprises a drying box body 1, a shell 2, a positive pole rotary drum 3, a negative pole rotary drum 4, grains 5, a positive pole scraping blade 6, a negative pole scraping blade 7, a driving motor 8 and a touch screen 9.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The embodiment of the utility model provides a cereal drying system, including drying box 1, be equipped with the heater in drying box 1, still include cereal 5 moisture detecting element, cereal 5 moisture detecting element includes positive electrode, negative electrode and signal output port, the one end of positive electrode with the one end of negative electrode concatenates through the universal meter and forms the return circuit, enclose between the other end of positive electrode and the other end of negative electrode and close and form the detection space that is used for extrudeing through cereal 5 in order to detect cereal 5 resistance, signal output port with the heater electricity is connected; the upper part of the detection space is provided with a grain 5 inlet, and the lower part of the detection space is communicated with the drying box body 1.
As shown in fig. 1 and 2, the system is externally connected with a 24V dc power supply, and then converted into voltages required by each unit module through a voltage conversion circuit. Before the detection is started, a corresponding relation table of the moisture content and the resistance value of the grains 5 can be obtained through a limited number of tests and stored. When the grain 5 passes through the detection space and the positive electrode and the negative electrode of the detection space are respectively contacted with the two ends of the grain 5, the loop is conducted, so that the resistance value of the grain 5 can be detected, and the corresponding moisture value can be correspondingly found through the corresponding relation table of the resistance values. Whether the grain 5 needs to be dried or not is judged according to the moisture value. If the moisture value exceeds the preset value, the drying box body 1 is opened for heating, otherwise, the drying box body 1 is not opened, and the product is directly transported to the next station.
Preferably, the positive electrode and the negative electrode are respectively a positive rotating drum 3 and a negative rotating drum 4, and the positive rotating drum 3 and the negative rotating drum 4 are arranged in parallel at intervals and rotate synchronously to form a detection space for grains 5 to extrude and pass through. Therefore, as shown in fig. 1 and 2, the rotating electrodes are the positive rotating drum 3 and the negative rotating drum 4, grains 5 are extruded by rotation, the electrode voltage detection circuit detects voltage at two ends and loop current, the voltage and the loop current pass through the operational amplifier circuit and then reach the microprocessor control circuit, the microprocessor control circuit calculates the resistance value of the grains 5 according to the voltage and the current detected by the circuit, and the resistance value is displayed on the touch screen 9 through the touch screen 9 communication circuit. The micro-processing control circuit judges whether the resistance value exceeds the standard, the larger the resistance value is, the more the moisture is, and the higher the moisture is, the more the moisture exceeds the standard when the resistance value exceeds the preset value, and at the moment, the heater is started to carry out drying operation on the grains 5.
Preferably, the moisture detection unit for the grains 5 comprises a shell 2, the positive electrode rotary drum 3 and the negative electrode rotary drum 4 both penetrate out of the shell 2 from inside to outside, and the positive electrode rotary drum 3 and the negative electrode rotary drum 4 extending out of the shell 2 synchronously rotate to form a detection space for the grains 5 to extrude and penetrate through. As shown in fig. 2, the positive rotary drum 3 and the negative rotary drum 4 are arranged side by side to penetrate the housing 2, and the outer surfaces of the two are close to each other without contact. The detection space size that is close to the formation is less than the minimum cross section size of cereal 5, is guaranteed that cereal 5 is passed and is simultaneously by anodal rotary drum 3 and the rotatory contact extrusion of negative pole rotary drum 4 when this detection space to guarantee that circuit loop switches on and accomplishes the 5 both ends voltage detection function of cereal.
Preferably, a positive electrode scraping blade 6 and a negative electrode scraping blade 7 are respectively and fixedly arranged at two ends of the shell 2, which are far away from the detection space, the positive electrode scraping blade 6 abuts against the outer surface of the positive electrode rotating drum 3, and the negative electrode scraping blade 7 abuts against the outer surface of the negative electrode rotating drum 4. As shown in fig. 2, the rotating electrodes, i.e., the positive electrode rotating drum 3 and the negative electrode rotating drum 4, include positive electrode blades 6 and negative electrode blades 7. When the electrode is rotated, the surface of the rotating electrode is rubbed with the scraping blade, so that residues attached to the rotating electrode are scraped, the overlapping influence of the residues on subsequent tests is eliminated, and the moisture test precision is improved.
Preferably, the positive pole rotary drum 3 or the negative pole rotary drum 4 is connected with a driving motor 8. As shown in fig. 2, the driving motor 8 drives one of the rotary drums to rotate, so that the grains 5 form extrusion when passing through the detection space, and the other rotary drum rotates synchronously under the action of extrusion friction force.
Preferably, the driving motor 8 adopts a PWM control driving circuit. The starting and stopping speed of the direct current motor is changed through PWM pulse width modulation, and the impact of instantaneous large current on a voltage conversion circuit is reduced.
In the preferable scheme, a transit bin is arranged below the detection space, an inlet of the transit bin is positioned below the detection space, and an outlet of the transit bin is connected with the drying box body 1. Detecting a certain amount of grains 5, enabling the detected grains 5 to fall into a transfer bin, and transporting the grains 5 in the transfer bin to the next station when the grains 5 are judged to be qualified; if the grains 5 are unqualified, the grains 5 in the transfer bin and the subsequent grains 5 which are not detected are sent into a drying box together for drying operation.
According to the preferable scheme, a horn mouth is arranged above the detection space, and the lower end of the horn mouth is located right above the detection space. The horn mouth has a large upper end opening and a small lower end opening, so that grains 5 can conveniently enter the horn mouth and slowly pass through the detection space.
Preferably, a temperature sensor is arranged beside the detection space and electrically connected with the heater. As shown in fig. 1, the temperature sensor transmits temperature information to the microprocessor control circuit through the temperature sensor communication circuit, and the microprocessor circuit corrects the detected resistance value of the grain 5 by the temperature information to obtain a final accurate resistance value. And comparing the accurate resistance value with a reference value to judge whether the moisture exceeds the standard or not.
Preferably, the system further comprises a control board and a touch screen 9, the multimeter and the temperature sensor are respectively connected with the signal inlet end of the control board, and the touch screen 9 and the heater are respectively connected with the signal outlet end of the control board. As shown in FIG. 1, the microprocessor control circuitry within the control board includes a microprocessor, such as a processor of the STM32F4 family. The touch screen 9 is connected with the PLC, commands are sent out through the touch screen 9 to control the PLC to move, and the PLC controls the start and stop of the heater. In a specific implementation scenario, 13% of target moisture, 34% of measured grain number, 18% of actual moisture, 90s of countdown, 0% of moisture correction, 25 ℃ of temperature, 60% of grain number setting, 0.1% of temperature compensation, and japonica rice type setting are displayed on the touch screen 9.
The utility model has the advantages that: the utility model provides a cereal drying system, including the stoving box, be equipped with the heater in the stoving box, still include cereal moisture detecting element, cereal moisture detecting element includes positive electrode, negative electrode and signal output port, the one end of positive electrode with the one end of negative electrode concatenates through the universal meter and forms the return circuit, enclose between the other end of positive electrode and the other end of negative electrode and form the detection space that is used for passing through cereal in order to detect cereal resistance, signal output port with the heater electricity is connected; the grain inlet is arranged above the detection space, and the lower part of the detection space is communicated with the drying box body. Reach the stoving incasement after slowly passing through the detection space with cereal, positive electrode and negative electrode lean on respectively to lean on cereal both ends switch-on and form the return circuit, then show the resistance of cereal through the universal meter, through the resistance alright assess whether up to standard of cereal moisture content, if moisture is too much then open the heater to cereal heat drying can. The system reduces manual intervention after the moisture meter test result is alarmed, and improves the automation control degree of the drying system; and is energy-saving and environment-friendly.
The above examples are merely illustrative of the present invention and do not limit the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention.
Claims (10)
1. The utility model provides a cereal drying system, includes the stoving box, be equipped with heater, its characterized in that in the stoving box: the grain moisture detection device comprises a grain moisture detection unit, a heater and a control unit, wherein the grain moisture detection unit comprises a positive electrode, a negative electrode and a signal output port, one end of the positive electrode and one end of the negative electrode are connected in series through a universal meter to form a loop, a detection space for extruding grains to detect the resistance of the grains is formed between the other end of the positive electrode and the other end of the negative electrode in a surrounding mode, and the signal output port is electrically connected with the heater;
the grain inlet is arranged above the detection space, and the lower part of the detection space is communicated with the drying box body.
2. The grain drying system of claim 1, wherein: the positive electrode and the negative electrode are respectively a positive rotating roller and a negative rotating roller, and the positive rotating roller and the negative rotating roller are arranged in parallel at intervals and synchronously rotate to form a detection space for grains to extrude and pass through.
3. The grain drying system of claim 2, wherein: the grain moisture detection unit comprises a shell, the positive electrode rotary drum and the negative electrode rotary drum penetrate out of the shell from inside to outside, and the positive electrode rotary drum and the negative electrode rotary drum extending out of the shell rotate synchronously to form a detection space for grains to extrude and pass through.
4. The grain drying system of claim 3, wherein: and two ends of the shell, which are far away from the detection space, are respectively and fixedly provided with a positive electrode scraping blade and a negative electrode scraping blade, the positive electrode scraping blade is abutted against the outer surface of the positive electrode rotating roller, and the negative electrode scraping blade is abutted against the outer surface of the negative electrode rotating roller.
5. The grain drying system of claim 2, wherein: and the positive pole rotary drum or the negative pole rotary drum is connected with a driving motor.
6. The grain drying system of claim 5, wherein: the driving motor adopts a PWM control driving circuit.
7. The grain drying system of claim 1, wherein: the drying box is characterized in that a transfer bin is arranged below the detection space, an inlet of the transfer bin is located below the detection space, and an outlet of the transfer bin is connected with the drying box body.
8. The grain drying system of claim 1, wherein: the upper portion in detection space is equipped with the horn mouth, the lower extreme of horn mouth is located directly over the detection space.
9. The grain drying system of claim 1, wherein: and a temperature sensor is arranged beside the detection space and electrically connected with the heater.
10. The grain drying system of claim 9, wherein: the system further comprises a control board and a touch screen, the multimeter and the temperature sensor are respectively connected with the signal inlet end of the control board, and the touch screen and the heater are respectively connected with the signal outlet end of the control board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922275033.8U CN211346293U (en) | 2019-12-18 | 2019-12-18 | Grain drying system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922275033.8U CN211346293U (en) | 2019-12-18 | 2019-12-18 | Grain drying system |
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| CN211346293U true CN211346293U (en) | 2020-08-25 |
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| CN201922275033.8U Active CN211346293U (en) | 2019-12-18 | 2019-12-18 | Grain drying system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113280593A (en) * | 2021-05-31 | 2021-08-20 | 安徽华谷机械科技有限公司 | Intelligent separation type grain dryer |
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2019
- 2019-12-18 CN CN201922275033.8U patent/CN211346293U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113280593A (en) * | 2021-05-31 | 2021-08-20 | 安徽华谷机械科技有限公司 | Intelligent separation type grain dryer |
| CN113280593B (en) * | 2021-05-31 | 2022-06-07 | 安徽华谷机械科技有限公司 | Intelligent separation type grain dryer |
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