CN116105054A - Electromagnetic induction driven intelligent automatic fat supplementing device - Google Patents
Electromagnetic induction driven intelligent automatic fat supplementing device Download PDFInfo
- Publication number
- CN116105054A CN116105054A CN202310019459.5A CN202310019459A CN116105054A CN 116105054 A CN116105054 A CN 116105054A CN 202310019459 A CN202310019459 A CN 202310019459A CN 116105054 A CN116105054 A CN 116105054A
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- Prior art keywords
- driving motor
- cylinder body
- grease
- greasing
- control circuit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000005674 electromagnetic induction Effects 0.000 title claims abstract description 26
- 230000001502 supplementing effect Effects 0.000 title claims abstract description 11
- 239000004519 grease Substances 0.000 claims abstract description 45
- 230000006698 induction Effects 0.000 claims abstract description 40
- 238000003825 pressing Methods 0.000 claims abstract description 17
- 230000005611 electricity Effects 0.000 claims abstract description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005461 lubrication Methods 0.000 abstract description 23
- 230000007812 deficiency Effects 0.000 abstract description 5
- 230000001050 lubricating effect Effects 0.000 abstract description 5
- 239000013589 supplement Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000003904 radioactive pollution Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N11/00—Arrangements for supplying grease from a stationary reservoir or the equivalent in or on the machine or member to be lubricated; Grease cups
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N13/00—Lubricating-pumps
- F16N13/02—Lubricating-pumps with reciprocating piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N23/00—Special adaptations of check valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N2270/00—Controlling
- F16N2270/20—Amount of lubricant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N2270/00—Controlling
- F16N2270/70—Supply
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
- Rolling Contact Bearings (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention provides an intelligent automatic grease supplementing device driven by electromagnetic induction, which comprises a grease container consisting of a pushing screw rod, a pushing pressing plate, a cylinder body and a piston, an induction device for taking electricity based on electromagnetic induction, a control circuit board, a driving motor and a precise gear set. When the rotating equipment is started or rotated, the induction device continuously generates magnetic induction voltage to supply power, so that the control circuit board converts the rotation quantity and the rotation direction of the driving motor, the driving motor drives the precise gear set to move a certain stroke quantity in the cylinder body through the pushing screw rod and the pushing pressing plate, and lubricating grease in the cylinder body is extruded to flow out of the outlet of the oil cup to be loaded at a bearing grease adding pipe joint of the rotating equipment in a corresponding grease adding quantity; and the induction device is used for interrupting the generation of magnetic induction voltage when the rotating equipment stops rotating so as to stop the work of all parts to interrupt the greasing. By implementing the invention, reasonable lubrication during operation can be provided for equipment, and excessive lubrication after equipment is stopped and lubrication deficiency phenomenon after equipment is started can be avoided.
Description
Technical Field
The invention relates to the technical field of nuclear power mechanical equipment, in particular to an intelligent automatic grease supplementing device driven by electromagnetic induction.
Background
In order to ensure the normal operation of the nuclear power rotating equipment, the rotating parts, particularly the bearing parts, need to be lubricated regularly during daily operation. Among them, many bearing parts require regular grease replenishment operations to ensure the lubrication effect of the bearings.
The nuclear power rotating equipment usually adopts manual oil gun to supplement lubricating grease, but the method has various defects, including: 1. the risk of fat-liquoring by mistake, and careful check is needed during fat-liquoring; 2. before greasing, cleaning the oil gun and the oil nozzle, and if the oil gun and the oil nozzle are not cleaned, introducing foreign matters is at risk; 3. the amount of fat added each time is about, and the accuracy of the amount cannot be achieved; 4. the greasing operation is carried out after a few weeks, so that the grease is injected for one time, and the fluctuation of the bearing temperature and the continuous rise of the bearing temperature are easily caused; 5. some sensitive equipment has smaller fat adding position, and is easy to cause false touch; 6. some positions can be executed only by setting up scaffolds, and extra workload is added; 7. the regular greasing needs to be carried out for preparing and executing the preventive work package and the like, and needs to be carried out by a great deal of manpower; 8. the rotating equipment of the radiation control area in the nuclear island is manually greased, and the risk of radioactive pollution such as external irradiation, even internal irradiation and the like is easily caused, so that the equipment cannot be lubricated in a reasonable lubrication area when the equipment is manually greased, and the service life of the equipment can be reduced when the equipment is in an excessive lubrication or insufficient lubrication state for a long time.
In order to solve the defects of the manual grease supplementing, mechanical and electric (battery-powered) automatic grease supplementing devices are adopted to supplement grease to nuclear power rotating equipment. However, this mechanical and electric automatic fat-filling device has the following drawbacks: 1. the mechanical automatic greasing device sets the greasing amount in a certain time interval, and cannot ensure reasonable lubrication amount during the running of the equipment; 2. the automatic grease supplementing device powered by the electric battery can not supplement grease in the state that the battery is not powered, so that the rotating equipment is damaged due to lack of lubrication. 3. When the equipment is in a standby state or started, the automatic grease supplementing device is required to be stopped or started manually, so that manual operation is increased, and excessive lubrication after the equipment is stopped or lubrication loss after the equipment is started easily occurs.
Therefore, there is a need for a new automatic fat feeder that overcomes the above-mentioned drawbacks of the existing mechanical and electric automatic fat feeders.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide the intelligent automatic grease supplementing device driven by electromagnetic induction, which is continuously powered on based on the electromagnetic induction principle, so that reasonable lubrication during operation can be provided for equipment, and excessive lubrication after equipment is stopped and lubrication deficiency phenomenon after equipment is started can be avoided.
In order to solve the technical problems, the embodiment of the invention provides an intelligent automatic grease supplementing device driven by electromagnetic induction, which is used for rotating equipment to be lubricated and comprises a grease container consisting of a pushing screw rod, a pushing pressing plate, a cylinder body and a piston, an induction device for taking electricity based on electromagnetic induction, a control circuit board, a driving motor and a precise gear set; wherein,,
the cylinder body is of a closed structure, the inner cavity of the cylinder body is filled with liquid grease, and an oil cup outlet which is in sealing connection with a bearing grease adding pipe joint preset on the rotating equipment and used for the grease to flow out is formed in the cylinder body; the piston is arranged in the cylinder body, and the pushing pressing plate is fixed on the side surface of one side of the piston, which is far away from the oil cup outlet; the pushing pressing plate is fixedly provided with the pushing screw on the end face of one end far away from the oil cup outlet, and penetrates out of the cylinder body through the pushing screw to be connected with one end of the precise gear set; the other end of the precise gear set is connected with the driving motor and is driven by the driving motor to realize rotation; one end of the control circuit board is connected with the voltage end of the driving motor, and the other end of the control circuit board is connected with the induction device; the induction device is additionally arranged on a bearing oil pipe interface of the rotating equipment;
the induction device is used for continuously generating magnetic induction voltage and supplying power to the control circuit board when the rotating equipment is started and rotated; when the rotating equipment stops rotating, the generation of the magnetic induction voltage is interrupted to cut off the power supply to the control circuit board;
the control circuit board is used for supplying power to the driving motor when the driving motor is electrified and works, and according to a preset greasing period and the greasing amount of each greasing period, the total stroke amount of the piston in the cylinder body and the total volume of the cylinder body are combined, the rotation amount and the rotation direction of the driving motor at the moment of each greasing period are calculated, and when the moment of each greasing period arrives, the corresponding rotation amount and rotation direction are issued to the driving motor; when power is off, the power supply to the driving motor is cut off, and the driving motor is cut off to send the rotation quantity and the rotation direction at any greasing period time;
the driving motor is used for rotating according to the rotation quantity and the rotation direction of each greasing period moment, so as to drive the precise gear set to push the pushing screw rod, the piston moves to a certain stroke quantity in the cylinder body to squeeze the grease in the cylinder body to flow out of the greasing quantity corresponding to the greasing period from the outlet of the oil cup, and the grease is loaded at a bearing greasing pipe joint preset on the rotating equipment.
Wherein, induction system is CT integral type electricity taking device.
Wherein, the preset fatting period on the control circuit board has 12 to 18 fatting periods.
The control circuit board is also provided with a setting switch for presetting a greasing period and the greasing quantity of each greasing period, and an indicator lamp for being turned on when the power is on or turned off when the power is off.
Wherein, the driving motor is a brushless DC motor.
Wherein, the pushing screw rod, the pushing pressing plate, the cylinder body and the piston in the grease container are all made of stainless steel.
The rotation quantity comprises rotation time and rotation speed.
The embodiment of the invention has the following beneficial effects:
the induction device based on the electromagnetic induction principle continuously generates magnetic induction voltage to supply power when the rotating equipment is started or rotates, so that the control circuit board converts the rotation quantity and the rotation direction of the driving motor, the driving motor drives the precise gear set to drive the screw rod and the pushing pressing plate to enable the piston to move in the cylinder body by a certain stroke quantity, and the lubricating grease in the cylinder body is extruded to flow out of the outlet of the oil cup and is loaded at the bearing grease-adding pipe joint of the rotating equipment in a corresponding grease-adding quantity, thereby reasonable lubrication during the operation period can be provided for the equipment, and the phenomenon of lubrication deficiency after the equipment is started can be avoided; in addition, the induction device based on the electromagnetic induction principle is used for interrupting the generation of magnetic induction voltage when the rotating equipment stops running, so that the circuit control board and the driving motor work to interrupt the greasing, and the phenomenon of excessive lubrication after the equipment stops running can be avoided.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that it is within the scope of the invention to one skilled in the art to obtain other drawings from these drawings without inventive faculty.
Fig. 1 is a schematic diagram of an overall plane of an electromagnetic induction driven intelligent automatic fat liquoring device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present invention more apparent.
As shown in fig. 1, in the embodiment of the present invention, an electromagnetic induction driven intelligent automatic grease replenishing device is provided, which is used on a rotating device (not shown) to be lubricated, and comprises a grease container composed of a pushing screw 1, a pushing pressing plate 2, a cylinder 3 and a piston 4, an induction device 5 for taking electricity based on electromagnetic induction, a control circuit board 6, a driving motor 7 and a precise gear set 8; wherein,,
the cylinder body 3 is a closed structure (such as a cylinder body, a box body and the like) made of stainless steel, the inner cavity of the cylinder body is filled with liquid grease (not shown), and an oil cup outlet 31 which is in sealing connection with a bearing grease adding pipe joint (not shown) preset on the rotating equipment and is used for the outflow of the grease is formed in the cylinder body; it will be appreciated that the cylinder 3 should be provided with an injection port for grease injection;
the piston 4 is made of stainless steel and is arranged in the cylinder body 3, and a pushing pressing plate 2 is fixed on the side surface of one side of the piston, which is far away from the oil cup outlet 31;
the pushing pressing plate 2 is made of stainless steel, a pushing screw 1 (also made of stainless steel) is fixed on the end face of one end far away from the oil cup outlet 31, and the pushing screw 1 penetrates out of the cylinder body 3 to be connected with one end of the precise gear set 8 (comprising a master-slave gear set made of stainless steel);
the other end of the precise gear set 8 is connected with a driving motor 7 (such as a brushless direct current motor) and is driven by the driving motor 7 to realize rotation;
one end of the control circuit board 6 is connected with a voltage end of the driving motor 7, and the other end is connected with the induction device 5;
the induction device 5 (such as a CT integrated power taking device, and CT is a Hall sensor) is additionally arranged on a bearing oil pipe interface of the rotating equipment;
the induction device 5 is used for generating a magnetic field due to the fact that the bearing does not stop rotating when the rotating equipment starts and rotates, so that the induction device can continuously generate magnetic induction voltage and supply power to the control circuit 6; and, when the rotation device stops rotating, interrupting the generation of the magnetic induction voltage to cut off the power supply to the control circuit 6;
the control circuit board 6 is used for supplying power to the driving motor 7 during power-on operation, converting the rotation quantity (including rotation time, rotation speed and the like) and rotation direction of the driving motor 7 at each greasing period moment according to a preset greasing period (such as 12 to 18 greasing periods) and the greasing quantity of each greasing period, and combining the total stroke quantity of the piston 4 in the cylinder 3 and the total volume of the cylinder 3 stored in advance, and issuing the corresponding rotation quantity and rotation direction to the driving motor 7 when each greasing period moment arrives; when power is off, the power supply to the driving motor 7 is cut off, and the driving motor 7 is cut off to send the rotation quantity and the rotation direction at any greasing period time;
the driving motor 7 is used for rotating according to the rotation quantity and the rotation direction of each greasing period moment, so as to drive the precise gear set 8 to push the pushing screw 1 and the pushing pressing plate 2, so that the piston 4 moves to a certain stroke quantity in the cylinder 3 to squeeze the grease in the cylinder 3 to flow out of the greasing quantity corresponding to the greasing period from the oil cup outlet 31, and the grease is loaded at a bearing greasing pipe joint preset on the rotating equipment.
It will be appreciated that the control circuit board 6 is also provided with a setting switch for presetting the fatliquor adding period and the fatliquor adding amount of each fatliquor adding period, and an indicator lamp for being turned on when the power is on or turned off when the power is off.
The working principle of the intelligent automatic fat liquoring device driven by electromagnetic induction in the embodiment of the invention is that firstly, an induction device 5 is added on rotatable equipment, a control circuit board 6 works, and a fat liquor adding period and the fat liquor adding quantity of each fat liquor adding period are preset through a setting switch; secondly, filling the inner cylinder body 3 with liquid lubricating grease, forming sealing connection between an oil cup outlet 31 formed in the outer shell and a bearing oil pipe connector (not shown) preset on the rotating equipment to be lubricated, and adding the sensing device 5 to a bearing oil pipe connector of the rotating equipment to be lubricated; then, starting the rotating equipment to be lubricated to enable the rotating equipment to start and rotate, when the rotating equipment starts or rotates, continuously generating magnetic induction voltage to supply power based on an electromagnetic induction principle by the induction device 5, enabling the control circuit board 6 to work and converting the rotation quantity and the rotation direction required by the driving motor 7 in each greasing period, enabling the driving motor 7 to rotate according to the rotation quantity and the rotation direction of the moment of receiving each greasing period, driving the precision gear set 8 to push the pushing screw rod 1 and the pushing pressing plate 2, enabling the piston 4 to move to a certain stroke quantity in the cylinder body 3 to squeeze the grease in the cylinder body 3 to flow out of the greasing quantity corresponding to the greasing period from the grease cup outlet 31, loading the grease inlet of a bearing preset on the rotating equipment, and accordingly providing reasonable lubrication during the operation for the equipment, and avoiding the phenomenon of lubrication deficiency after the equipment starts; finally, when the rotating equipment stops running, the induction device 5 cannot induce a magnetic field, and the induction device stops generating magnetic induction voltage so as to stop supplying power to the control circuit 6 and the driving motor 7 to stop the greasing, thereby avoiding the phenomenon of excessive lubrication after the equipment stops running
The embodiment of the invention has the following beneficial effects:
the induction device based on the electromagnetic induction principle continuously generates magnetic induction voltage to supply power when the rotating equipment is started or rotates, so that the control circuit board converts the rotation quantity and the rotation direction of the driving motor, the driving motor drives the precise gear set to drive the screw rod and the pushing pressing plate to enable the piston to move in the cylinder body by a certain stroke quantity, and the lubricating grease in the cylinder body is extruded to flow out of the outlet of the oil cup and is loaded at the bearing grease-adding pipe joint of the rotating equipment in a corresponding grease-adding quantity, thereby reasonable lubrication during the operation period can be provided for the equipment, and the phenomenon of lubrication deficiency after the equipment is started can be avoided; in addition, the induction device based on the electromagnetic induction principle is used for interrupting the generation of magnetic induction voltage when the rotating equipment stops running, so that the circuit control board and the driving motor work to interrupt the greasing, and the phenomenon of excessive lubrication after the equipment stops running can be avoided.
The foregoing disclosure is illustrative of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (7)
1. The intelligent automatic grease supplementing device driven by electromagnetic induction is characterized by being used on rotating equipment to be lubricated and comprising a grease container consisting of a pushing screw rod, a pushing pressing plate, a cylinder body and a piston, an induction device for taking electricity based on electromagnetic induction, a control circuit board, a driving motor and a precise gear set; wherein,,
the cylinder body is of a closed structure, the inner cavity of the cylinder body is filled with liquid grease, and an oil cup outlet which is in sealing connection with a bearing grease adding pipe joint preset on the rotating equipment and used for the grease to flow out is formed in the cylinder body; the piston is arranged in the cylinder body, and the pushing pressing plate is fixed on the side surface of one side of the piston, which is far away from the oil cup outlet; the pushing pressing plate is fixedly provided with the pushing screw on the end face of one end far away from the oil cup outlet, and penetrates out of the cylinder body through the pushing screw to be connected with one end of the precise gear set; the other end of the precise gear set is connected with the driving motor and is driven by the driving motor to realize rotation; one end of the control circuit board is connected with the voltage end of the driving motor, and the other end of the control circuit board is connected with the induction device; the induction device is additionally arranged on a bearing oil pipe interface of the rotating equipment;
the induction device is used for continuously generating magnetic induction voltage and supplying power to the control circuit board when the rotating equipment is started and rotated; when the rotating equipment stops rotating, the generation of the magnetic induction voltage is interrupted to cut off the power supply to the control circuit board;
the control circuit board is used for supplying power to the driving motor when the driving motor is electrified and works, and according to a preset greasing period and the greasing amount of each greasing period, the total stroke amount of the piston in the cylinder body and the total volume of the cylinder body are combined, the rotation amount and the rotation direction of the driving motor at the moment of each greasing period are calculated, and when the moment of each greasing period arrives, the corresponding rotation amount and rotation direction are issued to the driving motor; when power is off, the power supply to the driving motor is cut off, and the driving motor is cut off to send the rotation quantity and the rotation direction at any greasing period time;
the driving motor is used for rotating according to the rotation quantity and the rotation direction of each greasing period moment, so as to drive the precise gear set to push the pushing screw rod, the piston moves to a certain stroke quantity in the cylinder body to squeeze the grease in the cylinder body to flow out of the greasing quantity corresponding to the greasing period from the outlet of the oil cup, and the grease is loaded at a bearing greasing pipe joint preset on the rotating equipment.
2. The electromagnetic induction driven intelligent automatic fat liquoring device as claimed in claim 1, wherein the induction device is a CT integrated electricity taking device.
3. The electromagnetic induction driven intelligent automatic fat liquoring device as claimed in claim 2, wherein the preset fat liquoring period on the control circuit board has 12 to 18 fat liquoring periods.
4. The intelligent automatic fat liquoring device driven by electromagnetic induction according to claim 3, wherein the control circuit board is also provided with a setting switch for presetting a fat liquor adding period and the fat liquor adding amount of each fat liquor adding period, and an indicator lamp for being turned on when power is on or turned off when power is off.
5. The electromagnetic induction driven intelligent automatic fat liquoring device as claimed in claim 4, wherein the driving motor is a brushless DC motor.
6. The electromagnetic induction driven intelligent automatic fat liquoring device as claimed in claim 5, wherein the pushing screw rod, the pushing pressing plate, the cylinder body and the piston in the fat container are all made of stainless steel.
7. The electromagnetic induction driven intelligent automatic fat liquoring device as claimed in claim 6, wherein the rotation quantity comprises rotation time and rotation speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310019459.5A CN116105054A (en) | 2023-01-06 | 2023-01-06 | Electromagnetic induction driven intelligent automatic fat supplementing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310019459.5A CN116105054A (en) | 2023-01-06 | 2023-01-06 | Electromagnetic induction driven intelligent automatic fat supplementing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116105054A true CN116105054A (en) | 2023-05-12 |
Family
ID=86257531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310019459.5A Pending CN116105054A (en) | 2023-01-06 | 2023-01-06 | Electromagnetic induction driven intelligent automatic fat supplementing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116105054A (en) |
-
2023
- 2023-01-06 CN CN202310019459.5A patent/CN116105054A/en active Pending
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