CN115265746A - Weighing calibration device and method for mixing station - Google Patents
Weighing calibration device and method for mixing station Download PDFInfo
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- CN115265746A CN115265746A CN202211009468.8A CN202211009468A CN115265746A CN 115265746 A CN115265746 A CN 115265746A CN 202211009468 A CN202211009468 A CN 202211009468A CN 115265746 A CN115265746 A CN 115265746A
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- 238000005303 weighing Methods 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000004873 anchoring Methods 0.000 claims abstract description 22
- 230000000712 assembly Effects 0.000 claims abstract description 6
- 238000000429 assembly Methods 0.000 claims abstract description 6
- 238000012795 verification Methods 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 235000004443 Ricinus communis Nutrition 0.000 claims 2
- 238000005259 measurement Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/01—Testing or calibrating of weighing apparatus
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention discloses a weighing calibration device and a weighing calibration method for a mixing station, wherein the calibration device comprises a cross beam, an anchoring piece and two sets of force measuring assemblies, the cross beam is erected above a metering weighing hopper, and the anchoring piece is fixedly arranged on an operation platform; the force measuring assembly comprises a hydraulic jack, a tension sensor, an adjusting screw rod, a locking nut and a cylindrical supporting assembly, the hydraulic jack is placed on the horizontal cross beam, the cylindrical supporting assembly is sleeved on a cylinder body of the hydraulic jack, the upper end of the tension sensor is rotatably connected with the cylindrical supporting assembly, and the lower end of the tension sensor is hooked on the anchoring piece. The invention can check the metering scale by comparing whether the reading of the tension sensor is the same as the reading of the weighing sensor. The manual work is saved, the checking efficiency is improved, and the potential safety hazard caused by manual weight carrying is avoided.
Description
Technical Field
The invention relates to the technical field of concrete mixing stations, in particular to a weighing and checking device and method for a mixing station.
Background
Concrete with different strength grades and purposes is prepared by mixing various raw materials such as cement, coarse and fine aggregates, mineral admixtures, additives, mixing water and the like according to different mass ratios, and the production quality of the concrete can be ensured only by accurately metering all the raw materials through different metering scales. Accurate measurement of raw materials is particularly important for nuclear power engineering, and the quality of a concrete structure is directly related to whether the nuclear power plant can safely and stably operate in a service period. In order to ensure the accuracy of the measurement, the accuracy of the scale needs to be checked after the scale is used for a period of time.
The traditional method for checking the metering scale is that a standard weight is placed on the metering scale, the difference value between the weighing weight and the weight is compared, when the difference value exceeds the checking requirement, namely the checking is unqualified, the weight needs to be taken down for the calibration of the metering scale, and after the calibration is finished, the weight needs to be placed on the metering scale again for checking until the checking result meets the requirement of the metering precision. For example, one 2m 3 The concrete mixer set is generally provided with about 5 aggregate weighers with 2000kg range, about 5 powder weighers with 1000kg range and about 2 additive weighers with 50kg range or less; each time of carrying out the weighing load test, standard weights (25 kg/weight) need to be manually conveyed to the weighing hopper, each aggregate weighing scale needs to convey about 2000kg weights during the full-range test, other weighing scales are similar, and one stirring unit needs to convey 15000kg weights in total.
In conclusion, the traditional method for verifying the metering scale needs the cooperation of a plurality of personnel, and has the disadvantages of large workload, more potential safety hazards and low efficiency.
Disclosure of Invention
In order to solve the technical problem, the invention provides a weighing and checking device and method for a mixing station.
The technical scheme adopted by the invention is as follows:
a weighing calibration device for a mixing station comprises a cross beam, anchoring parts and two sets of force measuring assemblies, wherein the cross beam is horizontally erected above a metering scale hopper, the central line of the cross beam is superposed with the central line of the metering scale hopper, and the two sets of force measuring assemblies are symmetrically arranged at two ends of the cross beam; the two anchoring parts are fixedly arranged on an operation platform of the metering weighing hopper in a one-to-one correspondence manner with the force measuring assemblies; the force measuring assembly comprises a hydraulic jack, a tension sensor, an adjusting screw rod, a locking nut and a cylindrical support assembly, wherein the cylindrical support assembly comprises a cylinder with a bottom at the top end and two connecting arms of which the upper ends are connected to the open end of the cylinder; the hydraulic jack is placed on the horizontal cross beam, the bottom of the cylinder is sleeved on a cylinder body of the hydraulic jack in an upward sliding mode, the lower ends of the two connecting arms vertically extend downwards to the position below the cross beam along the two sides of the cross beam, the upper end of the tension sensor is rotatably connected with the two connecting arms through first hinge pins, and the lower ends of the tension sensor are hooked on the anchoring piece; the lower end of the adjusting screw vertically and downwards spirally penetrates through a threaded hole in the center of the bottom of the cylinder and extends into the cylinder, a plunger of the hydraulic jack vertically and upwards extends out and is supported on the bottom surface of the adjusting screw, and the locking nut is sleeved on the upper end of the adjusting screw and used for locking the adjusting screw.
According to the invention, the hydraulic jack and the tension sensor are arranged, positive pressure is applied to the weighing scale through the hydraulic jack, the value of the positive pressure is displayed through the tension sensor, the tension sensor is calibrated in advance, and the weighing scale can be verified by comparing whether the reading of the tension sensor is the same as that of the weighing sensor.
Further, the measuring assembly further comprises a level gauge for measuring the levelness of the top surface of the cylinder. The force exerted on the metering weighing hopper by the hydraulic jack can be indirectly measured through the level gauge, and whether the force is in the plumb direction or not is determined, so that the measurement error is reduced.
Furthermore, the adjusting screw is a universal foot cup, and the base of the universal foot cup is abutted against the top surface of the plunger of the hydraulic jack. The screw rod of the universal foot cup is connected with the base through the ball head, so that when the adjusting screw rod is rotated, the force of the screw rod acting on the base is always along the plumb direction, the top surface of the cylinder is always in the horizontal plane, and the force of the hydraulic jack exerted on the metering weighing hopper is always positive pressure in the plumb direction.
Further, the upper end of the adjusting screw rod is provided with a handle. The handle facilitates rotation of the adjusting screw to adjust its elongation within the barrel, and may also be used to lift the verification device.
Furthermore, the two connecting arms are rotatably connected with the cylinder through a second pin shaft, and the central axis of the second pin shaft radially penetrates through the cylinder. The connecting arm is respectively and rotatably connected with the cylinder and the tension sensor through the first pin shaft and the second pin shaft, so that the cylinder and the tension sensor are more conveniently connected and are easier to have the same axle center.
The device further comprises a remote controller, wherein the remote controller is used for controlling the zero setting, the peeling and the synchronous display of real-time numerical values on the tension sensor, and starting and stopping the device. The setting of remote controller makes the check-up of weigher more convenient, and the demonstration that the stirring station measurement was weighed generally all sets up in the control room, and the control room is generally far away from the installation place of weigher, and through setting up the remote controller, operating personnel can be in the control room more directly perceivedly more the numerical value that tension sensor shows unanimously with the vertical of weighing sensor demonstration, more conveniently realizes the check-up of weigher.
A method for verifying a metering scale by using any one of the weighing and verifying devices of the mixing station comprises the following steps;
1) Firstly, horizontally erecting a cross beam above a metering weighing hopper, and enabling the central line of the cross beam to be superposed with the central line of the metering weighing hopper;
2) After the bottom of the cylinder is upwards sleeved on the hydraulic jack, the hydraulic jack and the cylinder are placed on the upper side face of the horizontal cross beam, and meanwhile, the two connecting arms penetrate through the cross beam;
3) The hydraulic jack and the cylinder are moved left and right, so that the centers of the hydraulic jack, the cylinder and the tension sensor are positioned on the same plumb line;
4) Hooking a tension sensor on the anchoring part, rotating the adjusting screw rod in the forward direction, lifting the cylinder away from the cross beam, and tensioning the tension sensor by the upper fulcrum and the lower fulcrum but not in a stressed state;
5) Connecting a cylinder body of the hydraulic jack with an oil pipe of a hydraulic pump;
6) Opening a power switch on the tension sensor to initialize and zero;
7) Zeroing the load cell;
8) Starting a hydraulic pump to lift up a plunger of a hydraulic jack;
9) The force values displayed by the two tension sensors are added and then compared with the numerical values displayed by the weighing sensors of the weighing scale, if the two numerical values are the same, the weighing hopper does not need to be calibrated, and if the two numerical values are different, the weighing sensors need to be calibrated; after calibration, repeating the steps 5-9 until the two readings are the same;
10 The hydraulic jack and the adjusting screw are returned to the initial position, the hydraulic pump is stopped, the oil pipe is removed, and the weighing device is moved to another weighing scale to be verified.
Further, in step 6, the remote controller is started to initialize and zero the remote controller, and whether the numerical value on the tension sensor and the numerical value displayed on the remote controller are synchronous or not is observed; in step 9, the scale is verified by comparing whether the readings from the remote control and the load cell are the same.
The invention has the beneficial effects that: according to the invention, the hydraulic jack and the tension sensor are arranged, the hydraulic jack applies positive pressure to the weighing scale, the value of the positive pressure is displayed through the tension sensor, the tension sensor is calibrated in advance, and the weighing scale can be verified by comparing whether the reading of the tension sensor is the same as the reading of the weighing sensor, so that the labor is saved, the verification efficiency is improved, and the potential safety hazard caused by manual weight carrying is avoided. In addition, the checking device is not contacted with the inside of the metering weighing hopper, so that the risk of damaging the inside of the metering weighing hopper is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a weighing and verifying device of a mixing station.
Fig. 2 is a side view of fig. 1.
Fig. 3 is a schematic structural view of the cylindrical support assembly of the present invention.
Detailed Description
The invention is further described below with reference to specific examples to facilitate the understanding of the invention, but the invention is not limited thereby.
Referring to fig. 1, for convenience of feeding and discharging, the weighing scale of the mixing plant is generally configured as a suspended weighing scale, as shown in fig. 1, the weighing scale 100 is suspended at the bottom of the storage bin through four supporting points, four weighing sensors 101 are arranged at the four supporting points, and the weighing scale 100 is generally configured in a quadrangular frustum shape with a large top and a small bottom.
Example 1
Referring to fig. 1 to 3, the embodiment provides a weighing and checking device for a mixing station, which includes a beam 1, an anchoring member 2 and two sets of force measuring assemblies.
The crossbeam 1 is used for supporting the force measuring assembly and converting the jacking force of a hydraulic jack 7 in the force measuring assembly into positive pressure to be transmitted to the metering weighing hopper 100. In specific implementation, I-steel or hollow square steel can be selected as the cross beam 1, the length of the cross beam is larger than the width of the weighing hopper 100, and the cross beam is enough to support a force measuring assembly positioned right above the anchoring piece 2. When the beam 1 is erected above the weighing scale hopper 100, the upper side surface of the beam is in a horizontal plane, so that the pressure applied to the weighing scale hopper 100 by the hydraulic jack 7 is in a plumb direction, the tension measured by the tension sensor 4 is equal to the positive pressure applied to the weighing scale hopper 100 by the hydraulic jack 7, and the calibration accuracy is ensured.
The anchoring part 2 is used as a tension point for fixing a tension sensor 4 in the force measuring assembly, preferably, the anchoring part 2 is a chemical anchor bolt with a hook, the operating platform 200 of the weighing hopper is generally a concrete platform, and the chemical anchor bolt is convenient for the installation and the fixation of the anchoring part 2. When the operation platform 200 is a steel platform, a common hook can be selected to be welded with the steel platform. The anchoring member 2 can be used for a long time after being installed. The center line of the length direction of the weighing hopper 100 is found, the anchoring pieces 2 are fixed on the operating platform 200 right below the center line, the two anchoring pieces 2 are symmetrically arranged on two sides of the weighing hopper 100, the distance between the top surface of each weighing hopper and the operating platform of the weighing hopper is also considered when the anchoring pieces are installed due to the universality, and the distance between the top surface of each weighing hopper and the operating platform of the weighing hopper is basically consistent by adjusting the installation height of the anchoring pieces.
The force measuring assembly comprises a hydraulic jack 7, a tension sensor 4, an adjusting screw rod 10, a locking nut 9 and a cylindrical supporting assembly.
The hydraulic jack 7 is in the prior art, preferably, the hydraulic jack is a separated manual hydraulic jack and comprises an oil pump and a jack, an oil pipe of the oil pump is connected with the jack during measurement, and the plunger is lifted through manual pressing.
The tension sensor 4 is used for measuring the jacking force of the hydraulic jack, and preferably, the tension sensor 4 has digital display and remote control functions. In this embodiment, a MH-W3 wireless force measuring instrument manufactured by shanghai sweet jar instruments ltd is used as the tension sensor 4, two tension ends of the sensor are provided with connecting rings 3 or pin holes and are matched with a remote controller, and the remote controller is used for controlling the zero setting, the peeling and the synchronous display of real-time values on the sensor, and starting and stopping the sensor.
The cylindrical supporting component comprises a cylinder 8 and a connecting arm 6, one end of the cylinder 8 is closed, the other end of the cylinder is open, a bottom cover is arranged at the closed end, and a threaded through hole matched with the adjusting screw rod is axially arranged at the center of the bottom cover. The connecting arms 6 are two in number, and the length of the connecting arms needs to be larger than the height of the cross beam 1. During specific implementation, the strip-shaped steel plate can be selected as the connecting arm, the upper end of the connecting arm 6 can be vertically welded on two sides of the central part of the open end of the cylinder 8, a hole can also be formed in the upper end of the connecting arm 6, short cylinders, namely the second pin shaft 15, are radially welded on two sides of the central part of the open end of the cylinder 8, and the upper end of the connecting arm 6 is arranged in the second pin shaft 15 in a penetrating mode. In order to prevent the connecting arm 6 from separating from the second pin 15, a pin hole may be formed in the outer end of the second pin 15, and a positioning pin is inserted into the pin hole to prevent the connecting arm 6 from falling off. The lower end of the connecting arm 6 is provided with a pin hole, so that the first pin shaft 5 penetrates through the pin hole and the ring at the upper end of the tension sensor 4, and the connecting arm 6 and the tension sensor 4 are connected together.
The lower end of the adjusting screw rod 10 vertically and downwards spirally penetrates through the threaded through hole of the bottom cover of the cylinder and extends into the cylinder, and the locking nut 9 is spirally sleeved at the upper end of the adjusting screw rod 10.
Preferably, a round bar 11 is inserted into the upper end of the adjusting screw 10 as a handle for pulling and rotating the screw. The preferred universal foot cup that will have now uses as adjusting screw to make the base of universal foot cup support the top surface that leans on hydraulic jack 7's plunger, increase adjusting screw and hydraulic jack's area of contact and when making to rotate adjusting screw, adjusting screw and hydraulic jack's action point is in on the plumb line all the time.
Example 2
The present embodiment provides a method of verifying a weigh scale hopper 100 using the weigh verification apparatus of the mixing station of embodiment 1, comprising:
1) Firstly, horizontally erecting a beam 1 above a metering weighing hopper 100 to ensure that the central line of the beam 1 is superposed with the central line of the metering weighing hopper 100;
2) After the bottom of the cylinder 8 is upwards sleeved on the hydraulic jack 7, the hydraulic jack 7 and the cylinder 8 are placed on the upper side face of the horizontal beam 1, meanwhile, the two connecting arms 6 penetrate through the beam 1, and at the moment, the distance of the adjusting screw 10 extending into the cylinder 8 is shortest;
3) The hydraulic jack 7 and the cylinder 8 are moved left and right, so that the centers of the hydraulic jack 7, the cylinder 8 and the tension sensor 4 are positioned on the same plumb line;
4) Hooking a lower end ring 3 of a tension sensor 4 on an anchoring part 2, loosening a locking nut 9, positively rotating an adjusting screw rod 10, continuing to positively rotate the screw rod after the bottom surface of the adjusting screw rod 10 contacts the top surface of a hydraulic jack 7, lifting a cylinder 8 away from a cross beam 1, and tensioning the tension sensor 4 by an upper fulcrum and a lower fulcrum but not in a stressed state;
5) Connecting a cylinder body of the hydraulic jack with an oil pipe of a hydraulic pump;
6) A power switch on the tension sensor 4 is turned on to initialize and zero;
7) Zeroing the load cell;
8) Starting a hydraulic pump to lift up a plunger of a hydraulic jack 7; the jacking force of the hydraulic jack 7 is the positive pressure applied to the weighing hopper 100 through the cross beam 1;
9) Comparing the sum of the force values F1 and F2 displayed by the two tension sensors 41 and 42 with the value displayed by the weighing sensor of the weighing scale, if the two readings are the same, the weighing hopper does not need to be calibrated, and if the two readings are different, the weighing sensor needs to be calibrated; after calibration, repeating the steps 5-9 until the two readings are the same;
10 The hydraulic jack 7 and the adjusting screw 10 are returned to the initial position, the hydraulic pump is stopped, the oil pipe is removed, and the weighing device is moved to another weighing scale to be verified.
Example 3
The embodiment is basically the same as the embodiment 2, and is different in that a remote controller is used for controlling the start and stop of the tension sensor 4 in a control room of the mixing plant and synchronously displaying the numerical value of the tension sensor 4; in step 6, the remote controller is started to initialize and zero, and whether the numerical value on the tension sensor and the numerical value displayed on the remote controller are synchronous or not is observed; in step 9, the scale is verified by comparing whether the readings from the remote control and the load cell are the same.
The setting of remote controller makes the check-up of weigher more convenient, and the demonstration that the stirring station measurement was weighed generally all sets up in the control room, and the control room is generally far away from the installation place of weigher, and through setting up the remote controller, operating personnel can be in the control room more directly perceivedly more the numerical value that tension sensor shows unanimously with the vertical of weighing sensor demonstration, more conveniently realizes the check-up of weigher.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and the improvements and modifications are also within the protection scope of the present invention.
Claims (8)
1. A weighing and checking device for a mixing station is characterized by comprising a cross beam, an anchoring part and two sets of force measuring components, wherein the cross beam is horizontally erected above a metering weighing hopper, the central line of the cross beam is superposed with the central line of the metering weighing hopper, and the two sets of force measuring components are symmetrically arranged at two ends of the cross beam; the two anchoring parts are fixedly arranged on an operation platform of the metering weighing hopper in a one-to-one correspondence manner with the force measuring assemblies; the force measuring assembly comprises a hydraulic jack, a tension sensor, an adjusting screw rod, a locking nut and a cylindrical support assembly, wherein the cylindrical support assembly comprises a cylinder with a bottom at the top end and two connecting arms with the upper ends connected to the open end of the cylinder; the hydraulic jack is placed on the horizontal cross beam, the bottom of the cylinder is sleeved on a cylinder body of the hydraulic jack in an upward sliding mode, the lower ends of the two connecting arms vertically extend downwards to the lower portion of the cross beam along the two sides of the cross beam, the upper end of the tension sensor is rotatably connected with the two connecting arms through first hinge pins, and the lower ends of the tension sensor are hooked on the anchoring piece; the lower end of the adjusting screw vertically and downwards spirally penetrates through a threaded hole in the center of the bottom of the cylinder and extends into the cylinder, a plunger of the hydraulic jack vertically and upwards extends out and is supported on the bottom surface of the adjusting screw, and the locking nut is sleeved on the upper end of the adjusting screw and used for locking the adjusting screw.
2. The weigh scale apparatus of claim 1, wherein the measuring assembly further comprises a level gauge for measuring a levelness of the top surface of the drum.
3. The weigh verification apparatus of claim 1, wherein the adjusting screw is a castor, the castor base abutting against the top surface of the hydraulic jack plunger.
4. The weigh verification apparatus of claim 4, wherein a handle is provided at an upper end of the adjusting screw.
5. The weigh scale apparatus of claim 1, wherein the two connecting arms are rotatably connected to the drum by a second pin, the second pin having a central axis extending radially through the drum.
6. The weigh verification apparatus of claim 1, further comprising a remote controller for controlling the force sensor to zero, peel, synchronously display real time values on the force sensor, power on and power off.
7. A method for verifying a scale using the mixing station weight verification device of any one of claims 1 to 6, comprising the steps of;
1) Firstly, horizontally erecting a cross beam above a metering weighing hopper, and enabling the central line of the cross beam to be superposed with the central line of the metering weighing hopper;
2) After the bottom of the cylinder is upwards sleeved on the hydraulic jack, the hydraulic jack and the cylinder are placed on the upper side face of the horizontal cross beam, and meanwhile, the two connecting arms penetrate through the cross beam;
3) The hydraulic jack and the cylinder are moved left and right, so that the centers of the hydraulic jack, the cylinder and the tension sensor are positioned on the same plumb line;
4) Hooking a tension sensor on the anchoring part, rotating the adjusting screw rod in the forward direction, lifting the cylinder away from the cross beam, and tensioning the tension sensor by the upper fulcrum and the lower fulcrum but not in a stressed state;
5) Connecting a cylinder body of the hydraulic jack with an oil pipe of a hydraulic pump;
6) Opening a power switch on the tension sensor to initialize and zero;
7) Zeroing the load cell;
8) Starting a hydraulic pump to lift up a plunger of a hydraulic jack;
9) The force values displayed by the two tension sensors are added and then compared with the numerical values displayed by the weighing sensors of the weighing scale, if the two numerical values are the same, the weighing hopper does not need to be calibrated, and if the two numerical values are different, the weighing sensors need to be calibrated; after calibration, repeating the steps 5-9 until the two readings are the same;
10 The hydraulic jack and the adjusting screw are returned to the initial position, the hydraulic pump is stopped, the oil pipe is removed, and the weighing device is moved to another weighing scale to be verified.
8. The method of claim 7, wherein in step 6, the remote control is also activated, the remote control is initialized and zeroed, and the value on the tension sensor and the value displayed on the remote control are observed to be synchronized; in step 9, the scale is verified by comparing whether the readings from the remote control and the load cell are the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211009468.8A CN115265746A (en) | 2022-08-22 | 2022-08-22 | Weighing calibration device and method for mixing station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211009468.8A CN115265746A (en) | 2022-08-22 | 2022-08-22 | Weighing calibration device and method for mixing station |
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| CN115265746A true CN115265746A (en) | 2022-11-01 |
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| CN202211009468.8A Pending CN115265746A (en) | 2022-08-22 | 2022-08-22 | Weighing calibration device and method for mixing station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117723138A (en) * | 2023-11-20 | 2024-03-19 | 江苏康乾环境安全技术有限公司 | A weighing device for real-time detection in food waste collection systems |
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2022
- 2022-08-22 CN CN202211009468.8A patent/CN115265746A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117723138A (en) * | 2023-11-20 | 2024-03-19 | 江苏康乾环境安全技术有限公司 | A weighing device for real-time detection in food waste collection systems |
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