CN110255118B - Food detection and conveying device with screening function - Google Patents
Food detection and conveying device with screening function Download PDFInfo
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- CN110255118B CN110255118B CN201910482043.0A CN201910482043A CN110255118B CN 110255118 B CN110255118 B CN 110255118B CN 201910482043 A CN201910482043 A CN 201910482043A CN 110255118 B CN110255118 B CN 110255118B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/12—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with electromagnetic waves
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Abstract
The invention relates to the technical field of conveying devices for food detection, in particular to a food detection conveying device with a screening function; the food detection and conveying device with the screening function comprises a detection circuit, a processing circuit and a control circuit which are electrically connected in sequence, wherein the detection circuit comprises a first triode VT1, and the input end of the first triode is electrically connected with the control end of a first variable resistor RP1 and used for adjusting the sensitivity of the detection circuit; through setting up first variable resistor, the sensitivity that can effectual change detected improves the efficiency that detects, guarantees the safety of food.
Description
Technical Field
The invention relates to the technical field of conveying devices for food detection, in particular to a food detection conveying device with a screening function.
Background
Food safety plays a very important role in modern life, if some errors occur in food safety, the food safety can cause great harm to the health of people, food of children and old people needs to be concerned, so that a link of food detection must be set in many food processing fields, and the food can be put into the market only by detecting the food.
In the food processing process, the situation that impurities are inadvertently mixed into food, such as metal, glass, plastic, hair, wood chips, sand and stones, is often encountered, and harmful substances such as heavy metals, aflatoxin and the like are often carried in the food. Consumers eat food containing foreign substances and cause physical or mental damage. Therefore, food production enterprises detect and reject foreign matters in food in hundreds of ways. It needs to use check out test set to detect food, but current check out test set when carrying out the food and examining, needs the manual work to wait to detect food and put into the detector one by one and detect, needs the manual work to choose unqualified food after detecting the completion, consumes a large amount of manpower and materials, and work efficiency is low, increases the cost of labor of product. In view of the above, it is necessary to design a conveying device for food inspection with an automatic screening function.
Chinese patent 2018113804841 discloses a conveyer is used in food detection with screening function, which comprises a frame, frame one side is fixed with the install bin, the inside of install bin is fixed with servo motor, servo motor's output shaft is fixed with first gear, first gear engagement transmission has the second gear, the second gear is fixed in the pivot, the pivot is established in the frame through the bearing frame, the pivot both sides are fixed with the screening platform through the connecting block, the top of screening platform is provided with the detector body, the detector body passes through the support frame to be fixed in the frame, be fixed with the control box in the middle of the support frame, the control box internal fixation has signal processor, signal processor links to each other with servo motor and detector body electrical property, be provided with transport mechanism in the frame. Through above-mentioned structure when having realized food detection to the automatic transport of food, the screening is categorised, need not the manual work, and degree of automation is high, improves work efficiency greatly. However, the transmission device with the above structure has low signal detection sensitivity in the system, resulting in significant disadvantages in detection quality and efficiency.
Therefore, in order to solve the above problems, it is urgently needed to invent a new food detection and conveying device with a screening function.
Disclosure of Invention
The invention aims to: the food detection conveying device with the screening function is provided, the detection sensitivity is greatly improved through the improvement of the detection circuit, and the food safety is ensured more reliably.
The invention provides the following scheme:
a food detection and conveying device with a screening function comprises a detection circuit, a processing circuit and a control circuit which are electrically connected in sequence, wherein the detection circuit comprises a first triode VT1, the input end of the first triode is electrically connected with the control end of a first variable resistor RP1 and used for adjusting the sensitivity of the detection circuit, the first output end of the first triode is electrically connected with a first capacitor plate of a first capacitor C1, and the second capacitor plate of the first capacitor is electrically connected with the input end of the first triode; the detection circuit further comprises an inductor L, a first resistor R1 and a second resistor R2, wherein a first end of the inductor is electrically connected with a common connection point of the detection antenna, a first capacitor plate of the first capacitor and a first output end of the first triode, and a second end of the inductor is electrically connected with a signal input end of the processing circuit; the first end of the first resistor is electrically connected with the second output end of the first triode, the second end of the first resistor is electrically connected with the first end of the first variable resistor, the second end of the first variable resistor is electrically connected with the first end of the second resistor, and the second end of the second resistor is electrically connected with the second end of the inductor.
Preferably, the detection circuit further comprises a second capacitor C2 and a third resistor R3, a first capacitor plate of the second capacitor is electrically connected to a common connection point of the inductor and a second end of the second resistor, and a second capacitor plate of the second capacitor is electrically connected to a first end of the second resistor and a power supply; the first end of the third resistor is electrically connected to the first end of the second resistor and the second end of the first variable resistor.
Preferably, the processing circuit comprises a second transistor VT2 and a first integrated operational amplifier a1 and a second integrated operational amplifier a2, an input terminal of the second transistor is electrically connected to the inductor, a first output terminal of the second transistor is grounded, and a second output terminal of the second transistor is electrically connected to the power supply, an inverting input terminal of the first integrated operational amplifier and a forward input terminal of the second integrated operational amplifier, respectively; the positive input end of the first integrated operational amplifier is electrically connected with the power supply, and the reverse input end of the second integrated operational amplifier is grounded.
Preferably, the processing circuit further comprises a second variable resistor RP2, a first end of the second variable resistor being electrically connected to the positive input terminal of the first integrated operational amplifier, and a second end of the second variable resistor being electrically connected to the negative input terminal of the second integrated operational amplifier for adjusting the sensitivity of the processing circuit.
Preferably, the processing circuit further comprises a fourth capacitor C4 and a fifth capacitor C5, a first capacitor plate of the fourth capacitor is electrically connected to the second output terminal of the second transistor, and a second capacitor plate of the fourth capacitor is grounded; and the first capacitor plate of the fifth capacitor is electrically connected with the power supply, and the second capacitor plate of the fifth capacitor is grounded.
Preferably, the processing circuit includes a third capacitor C3, a first capacitor plate of the third capacitor is electrically connected to the second end of the inductor, and a second capacitor plate of the third capacitor is electrically connected to the input terminal of the second transistor.
Preferably, the processing circuit further includes a fourth resistor R4, a fifth resistor R5, a sixth resistor R6 and a seventh resistor R7, a first end of the fourth resistor is electrically connected to the second output terminal of the second transistor, and a second end of the fourth resistor is electrically connected to the power supply; a first end of the fifth resistor is electrically connected with the second capacitor plate of the third capacitor, and a second end of the fifth resistor is electrically connected with the second output end of the second triode; a first end of the sixth resistor is electrically connected with a positive input end of the first integrated operational amplifier, and a second end of the sixth resistor is electrically connected with the power supply; the first end of the seventh resistor is electrically connected with the inverting input end of the second integrated operational amplifier, and the second end of the seventh resistor is grounded.
Preferably, the processing circuit further includes a first diode D1, a second diode D2 and an eighth resistor R8, a conducting terminal of the first diode is electrically connected to the output terminal of the first integrated operational amplifier, a stopping terminal of the first diode is electrically connected to a first terminal of the eighth resistor, a conducting terminal of the second diode is electrically connected to the output terminal of the second integrated operational amplifier, a stopping terminal of the second diode is electrically connected to a first terminal of the eighth resistor, and a second terminal of the eighth resistor is grounded.
Preferably, the control circuit includes a third transistor VT3, an input terminal of the third transistor is electrically connected to the first terminal of the eighth resistor, a first output terminal of the third transistor is grounded, a second output terminal of the third transistor is electrically connected to one terminal of a control relay K, and a second terminal of the control relay is electrically connected to the power supply.
Preferably, the control circuit further comprises a sixth capacitor C6, a third diode D3 and a ninth resistor R9, wherein a first capacitor plate of the sixth capacitor is electrically connected with the input end of the third triode, a second capacitor plate of the sixth capacitor is grounded, and the third diode is connected with the control relay in parallel; and the first end of the ninth resistor is electrically connected with the first end of the eighth resistor, and the second end of the ninth resistor is grounded with the input end of the third triode.
The invention has the following beneficial effects:
the food detection and conveying device with the screening function comprises a detection circuit, a processing circuit and a control circuit which are electrically connected in sequence, wherein the detection circuit comprises a first triode VT1, the input end of the first triode is electrically connected with the control end of a first variable resistor RP1 and used for adjusting the sensitivity of the detection circuit, the first output end of the first triode is electrically connected with a first capacitor plate of a first capacitor C1, and the second capacitor plate of the first capacitor is electrically connected with the input end of the first triode; the detection circuit further comprises an inductor L, a first resistor R1 and a second resistor R2, wherein a first end of the inductor is electrically connected with a common connection point of the detection antenna, a first capacitor plate of the first capacitor and a first output end of the first triode, and a second end of the inductor is electrically connected with a signal input end of the processing circuit; a first end of the first resistor is electrically connected with a second output end of the first triode, a second end of the first resistor is electrically connected with a first end of the first variable resistor, a second end of the first variable resistor is electrically connected with a first end of the second resistor, and a second end of the second resistor is electrically connected with a second end of the inductor; through setting up first variable resistor, the sensitivity that can effectual change detected improves the efficiency that detects, guarantees the safety of food.
Drawings
Fig. 1 is a circuit diagram of a food inspection and conveying device with a screening function according to the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, a food detection and conveying device with a screening function comprises a detection circuit, a processing circuit and a control circuit which are electrically connected in sequence, wherein the detection circuit comprises a first triode VT1, the input end of the first triode is electrically connected with the control end of a first variable resistor RP1 and is used for adjusting the sensitivity of the detection circuit, the first output end of the first triode is electrically connected with a first capacitor plate of a first capacitor C1, and the second capacitor plate of the first capacitor is electrically connected with the input end of the first triode; the detection circuit further comprises an inductor L, a first resistor R1 and a second resistor R2, wherein a first end of the inductor is electrically connected with a common connection point of the detection antenna, a first capacitor plate of the first capacitor and a first output end of the first triode, and a second end of the inductor is electrically connected with a signal input end of the processing circuit; the first end of the first resistor is electrically connected with the second output end of the first triode, the second end of the first resistor is electrically connected with the first end of the first variable resistor, the second end of the first variable resistor is electrically connected with the first end of the second resistor, and the second end of the second resistor is electrically connected with the second end of the inductor. The detection circuit further comprises a second capacitor C2 and a third resistor R3, a first capacitor plate of the second capacitor is electrically connected with a common connection point of the inductor and a second end of the second resistor, and a second capacitor plate of the second capacitor is electrically connected with a first end of the second resistor and a power supply; the first end of the third resistor is electrically connected to the first end of the second resistor and the second end of the first variable resistor.
Referring to fig. 1, the processing circuit includes a second transistor VT2, a first integrated operational amplifier a1, and a second integrated operational amplifier a2, an input terminal of the second transistor is electrically connected to the inductor, a first output terminal of the second transistor is grounded, and a second output terminal of the second transistor is electrically connected to the power supply, an inverting input terminal of the first integrated operational amplifier, and a positive input terminal of the second integrated operational amplifier, respectively; the positive input end of the first integrated operational amplifier is electrically connected with the power supply, and the reverse input end of the second integrated operational amplifier is grounded. The processing circuit further includes a second variable resistor RP2 having a first end electrically connected to the positive input of the first integrated operational amplifier and a second end electrically connected to the negative input of the second integrated operational amplifier for adjusting the sensitivity of the processing circuit. The processing circuit further comprises a fourth capacitor C4 and a fifth capacitor C5, wherein a first capacitor plate of the fourth capacitor is electrically connected with the second output end of the second triode, and a second capacitor plate of the fourth capacitor is grounded; and the first capacitor plate of the fifth capacitor is electrically connected with the power supply, and the second capacitor plate of the fifth capacitor is grounded.
Referring to fig. 1, the processing circuit includes a third capacitor C3, a first capacitor plate of the third capacitor is electrically connected to the second end of the inductor, and a second capacitor plate of the third capacitor is electrically connected to the input terminal of the second transistor.
Referring to fig. 1, the processing circuit further includes a fourth resistor R4, a fifth resistor R5, a sixth resistor R6 and a seventh resistor R7, a first end of the fourth resistor is electrically connected to the second output terminal of the second transistor, and a second end of the fourth resistor is electrically connected to the power supply; a first end of the fifth resistor is electrically connected with the second capacitor plate of the third capacitor, and a second end of the fifth resistor is electrically connected with the second output end of the second triode; a first end of the sixth resistor is electrically connected with a positive input end of the first integrated operational amplifier, and a second end of the sixth resistor is electrically connected with the power supply; the first end of the seventh resistor is electrically connected with the inverting input end of the second integrated operational amplifier, and the second end of the seventh resistor is grounded. The processing circuit further comprises a first diode D1, a second diode D2 and an eighth resistor R8, wherein the conducting end of the first diode is electrically connected with the output end of the first integrated operational amplifier, the stopping end of the first diode is electrically connected with the first end of the eighth resistor, the conducting end of the second diode is electrically connected with the output end of the second integrated operational amplifier, the stopping end of the second diode is electrically connected with the first end of the eighth resistor, and the second end of the eighth resistor is grounded.
Referring to fig. 1, the control circuit includes a third transistor VT3, an input terminal of the third transistor is electrically connected to a first terminal of the eighth resistor, a first output terminal of the third transistor is grounded, a second output terminal of the third transistor is electrically connected to one terminal of a control relay K, and a second terminal of the control relay is electrically connected to the power supply. The control circuit further comprises a sixth capacitor C6, a third diode D3 and a ninth resistor R9, wherein a first capacitor plate of the sixth capacitor is electrically connected with the input end of the third triode, a second capacitor plate of the sixth capacitor is grounded, and the third diode is connected with the control relay in parallel; and the first end of the ninth resistor is electrically connected with the first end of the eighth resistor, and the second end of the ninth resistor is grounded with the input end of the third triode.
The food detection and conveying device with the screening function comprises a detection circuit, a processing circuit and a control circuit which are electrically connected in sequence, wherein the detection circuit comprises a first triode VT1, the input end of the first triode is electrically connected with the control end of a first variable resistor RP1 and used for adjusting the sensitivity of the detection circuit, the first output end of the first triode is electrically connected with a first capacitor plate of a first capacitor C1, and the second capacitor plate of the first capacitor is electrically connected with the input end of the first triode; the detection circuit further comprises an inductor L, a first resistor R1 and a second resistor R2, wherein a first end of the inductor is electrically connected with a common connection point of the detection antenna, a first capacitor plate of the first capacitor and a first output end of the first triode, and a second end of the inductor is electrically connected with a signal input end of the processing circuit; a first end of the first resistor is electrically connected with a second output end of the first triode, a second end of the first resistor is electrically connected with a first end of the first variable resistor, a second end of the first variable resistor is electrically connected with a first end of the second resistor, and a second end of the second resistor is electrically connected with a second end of the inductor; through setting up first variable resistor, the sensitivity that can effectual change detected improves the efficiency that detects, guarantees the safety of food.
The working principle of the food detection and transmission device with the screening function disclosed by the invention is as follows: generating a fixed high-frequency signal by the detection circuit, and radiating the signal by a detection antenna; when the range of the detection wire is different from the range of the object to be detected, the frequency of the signal reflected by the high-frequency signal changes, the signal is received by the detection antenna again, so that the frequency and the amplitude of the original signal change, and the control signal is formed after the integration, the amplification and the comparison processing are carried out by the processing circuit to control the movement of the transmission device; the sensitivity of the circuit is adjustable, the circuit can be adjusted and changed according to different foods, the detection efficiency is high, and the accuracy is high.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides a food detects conveyer with screening function which characterized in that: the detection circuit comprises a first triode VT1, the input end of the first triode is electrically connected with the control end of a first variable resistor RP1 and used for adjusting the sensitivity of the detection circuit, the first output end of the first triode is electrically connected with a first capacitor plate of a first capacitor C1, and a second capacitor plate of the first capacitor is electrically connected with the input end of the first triode; the detection circuit further comprises an inductor L, a first resistor R1 and a second resistor R2, wherein a first end of the inductor is electrically connected with a common connection point of a detection antenna, a first capacitor plate of the first capacitor and a first output end of the first triode, and a second end of the inductor is electrically connected with a signal input end of the processing circuit; a first end of the first resistor is electrically connected with a second output end of the first triode, a second end of the first resistor is electrically connected with a first end of the first variable resistor, a second end of the first variable resistor is electrically connected with a first end of the second resistor, and a second end of the second resistor is electrically connected with a second end of the inductor;
the detection circuit further comprises a second capacitor C2 and a third resistor R3, a first capacitor plate of the second capacitor is electrically connected with a common connection point of the inductor and a second end of the second resistor, and a second capacitor plate of the second capacitor is electrically connected with a first end of the second resistor and a power supply; a first end of the third resistor is electrically connected to a first end of the second resistor and a second end of the first variable resistor;
the processing circuit comprises a second triode VT2, a first integrated operational amplifier A1 and a second integrated operational amplifier A2, wherein the input end of the second triode is electrically connected with the inductor, the first output end of the second triode is grounded, and the second output end of the second triode is electrically connected with the power supply, the reverse input end of the first integrated operational amplifier and the forward input end of the second integrated operational amplifier respectively; the positive input end of the first integrated operational amplifier is electrically connected with the power supply, and the negative input end of the second integrated operational amplifier is grounded;
the processing circuit further comprises a second variable resistor RP2, a first end of the second variable resistor is electrically connected with the positive input end of the first integrated operational amplifier, and a second end of the second variable resistor is electrically connected with the negative input end of the second integrated operational amplifier, and the second variable resistor RP2 is used for adjusting the sensitivity of the processing circuit;
the processing circuit further comprises a fourth capacitor C4 and a fifth capacitor C5, wherein a first capacitor plate of the fourth capacitor is electrically connected with the second output end of the second triode, and a second capacitor plate of the fourth capacitor is grounded; and the first capacitor plate of the fifth capacitor is electrically connected with the power supply, and the second capacitor plate of the fifth capacitor is grounded.
2. The food detection conveyor with screening function of claim 1, characterized in that: the processing circuit comprises a third capacitor C3, wherein a first capacitor plate of the third capacitor is electrically connected with the second end of the inductor, and a second capacitor plate of the third capacitor is electrically connected with the input end of the second triode.
3. The food detection conveyor with screening function of claim 2, characterized in that: the processing circuit further comprises a fourth resistor R4, a fifth resistor R5, a sixth resistor R6 and a seventh resistor R7, wherein a first end of the fourth resistor is electrically connected with the second output end of the second triode, and a second end of the fourth resistor is electrically connected with the power supply; a first end of the fifth resistor is electrically connected with the second capacitor plate of the third capacitor, and a second end of the fifth resistor is electrically connected with the second output end of the second triode; a first end of the sixth resistor is electrically connected with a positive input end of the first integrated operational amplifier, and a second end of the sixth resistor is electrically connected with the power supply; the first end of the seventh resistor is electrically connected with the inverting input end of the second integrated operational amplifier, and the second end of the seventh resistor is grounded.
4. The food detection conveyor with screening function of claim 3, characterized in that: the processing circuit further comprises a first diode D1, a second diode D2 and an eighth resistor R8, wherein the conducting end of the first diode is electrically connected with the output end of the first integrated operational amplifier, the stopping end of the first diode is electrically connected with the first end of the eighth resistor, the conducting end of the second diode is electrically connected with the output end of the second integrated operational amplifier, the stopping end of the second diode is electrically connected with the first end of the eighth resistor, and the second end of the eighth resistor is grounded.
5. The food detection conveyor with screening function of claim 4, characterized in that: the control circuit comprises a third triode VT3, the input end of the third triode is electrically connected with the first end of the eighth resistor, the first output end of the third triode is grounded, the second output end of the third triode is electrically connected with one end of a control relay K, and the second end of the control relay is electrically connected with the power supply.
6. The food detection conveyer with screening function of claim 5, wherein: the control circuit further comprises a sixth capacitor C6, a third diode D3 and a ninth resistor R9, wherein a first capacitor plate of the sixth capacitor is electrically connected with the input end of the third triode, a second capacitor plate of the sixth capacitor is grounded, and the third diode is connected with the control relay in parallel; and the first end of the ninth resistor is electrically connected with the first end of the eighth resistor, and the second end of the ninth resistor is grounded with the input end of the third triode.
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| US4906928A (en) * | 1988-12-29 | 1990-03-06 | Atlantic Richfield Company | Transient electromagnetic apparatus with receiver having digitally controlled gain ranging amplifier for detecting irregularities on conductive containers |
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| JP2000082120A (en) * | 1998-09-07 | 2000-03-21 | Maspro Denkoh Corp | Article detection device |
| CN202189156U (en) * | 2011-08-13 | 2012-04-11 | 刘远 | Moving object inductive circuit |
| CN203502501U (en) * | 2013-10-27 | 2014-03-26 | 成都中阔科技有限责任公司 | Simple field intensity meter for integrated power supply inspection circuit |
| CN104000582A (en) * | 2014-05-04 | 2014-08-27 | 山东中医药大学 | Lead falling detection device for electrocardiogram monitoring device |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4906928A (en) * | 1988-12-29 | 1990-03-06 | Atlantic Richfield Company | Transient electromagnetic apparatus with receiver having digitally controlled gain ranging amplifier for detecting irregularities on conductive containers |
| CN1145665A (en) * | 1994-01-20 | 1997-03-19 | 希莱克乔尼克安全和特种电子技术股份有限公司 | Process and device for sensing living bodies |
| JP2000082120A (en) * | 1998-09-07 | 2000-03-21 | Maspro Denkoh Corp | Article detection device |
| CN202189156U (en) * | 2011-08-13 | 2012-04-11 | 刘远 | Moving object inductive circuit |
| CN203502501U (en) * | 2013-10-27 | 2014-03-26 | 成都中阔科技有限责任公司 | Simple field intensity meter for integrated power supply inspection circuit |
| CN104000582A (en) * | 2014-05-04 | 2014-08-27 | 山东中医药大学 | Lead falling detection device for electrocardiogram monitoring device |
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Effective date of registration: 20230628 Address after: No. 90-2, Liuyin Road, Xinling Town, Badong County, Enshi Tujia and Miao Autonomous Prefecture, Hubei Province 444399 Patentee after: Badong County Yuji Cereals and Oils Co.,Ltd. Address before: 450003 No.37, building 2, yard 91, Huanghe Road, Jinshui District, Zhengzhou City, Henan Province Patentee before: Wu Junhong |