CN111994638A - Lime quantitative adding device - Google Patents
Lime quantitative adding device Download PDFInfo
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- CN111994638A CN111994638A CN202010770044.8A CN202010770044A CN111994638A CN 111994638 A CN111994638 A CN 111994638A CN 202010770044 A CN202010770044 A CN 202010770044A CN 111994638 A CN111994638 A CN 111994638A
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- storage tank
- joint
- air inlet
- switch valve
- electric switch
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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
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/24—Gas suction systems
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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
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The invention provides a lime quantitative feeding device, which comprises a movable bearing device; the movable bearing device is provided with a material storage tank body, a material discharging power device and a quantitative box body; a feeding joint connected with the raw material bin, a vacuumizing joint connected with a vacuum pump, a primary air inlet joint, a secondary air inlet joint and a discharging joint are arranged on the material storage tank body; the discharge power device comprises a primary air storage tank connected with the primary air inlet joint, a secondary air storage tank connected with the secondary air inlet joint, and an air compressor connected with the primary air storage tank and the secondary air storage tank; the quantitative box body is provided with a feed inlet connected with a discharge joint of the material storage tank body, an air inlet connected with an air outlet of the air compressor and a discharge outlet connected with the preparation device. The invention can solve the problems that dust is easy to pollute the environment, the adding weight is not accurate, the accurate weight of the added calcium oxide is difficult to obtain due to deliquescence of the calcium oxide and the like in the lime milk adding process in the prior art.
Description
Technical Field
The invention relates to the technical field of lime milk preparation, in particular to a lime quantitative adding device.
Background
Lime milk is commonly used as a medicament in ore dressing plants, for example, reverse flotation of iron ore commonly uses lime milk as an activator of iron minerals; when the long-distance pipeline transportation of the concentrate or the tailings is carried out, lime milk is often added into the transportation ore pulp, so that a calcium carbonate scale layer is formed on the inner wall of the pipeline to protect the pipeline from being abraded by the ore pulp.
At present, most of lime milk selected from factories is prepared by the following steps: the method comprises the following steps of (1) conveying bagged calcium oxide to a medicament preparation workshop from an automobile for stockpiling, manually conveying the bagged calcium oxide to a lime milk preparation stirring tank, cutting a packaging bag by a knife, discharging the calcium oxide into the stirring tank, stirring and mixing the calcium oxide with water to prepare lime milk (calcium hydroxide aqueous solution), wherein the lime milk preparation method has the following defects:
1. a large amount of calcium oxide dust is generated in the procedures of calcium oxide stacking, carrying, bag breaking and unloading, so that the environment pollution is caused, and the strongly basic calcium oxide and hydrate thereof not only cause serious pneumoconiosis, but also cause strong alkali damage to the respiratory system of people.
2. Only the weight of the added calcium oxide can be estimated, the added weight cannot be accurately measured, and the deliquescence of the calcium oxide is difficult to prevent by combining the bagging mode, so that the accurate weight of the added calcium oxide is difficult to obtain.
Disclosure of Invention
In view of the above problems, the invention aims to provide a lime quantitative adding device, which can solve the problems that in the prior art, dust is easy to pollute the environment, the adding weight is not accurate, the accurate weight of added calcium oxide is difficult to obtain due to deliquescence of calcium oxide, and the like in the lime milk adding process.
The invention provides a lime quantitative feeding device, which comprises a movable bearing device; the movable bearing device is provided with a material storage tank body, a material discharging power device and a quantitative box body; the material storage tank body is provided with a feeding joint connected with the raw material bin, a vacuumizing joint connected with a vacuum pump, a primary air inlet joint, a secondary air inlet joint and a discharging joint; the discharge power device comprises a primary air storage tank connected with the primary air inlet joint, a secondary air storage tank connected with the secondary air inlet joint, and an air compressor connected with the primary air storage tank and the secondary air storage tank; the quantitative box body is provided with a feed inlet connected with a discharge joint of the material storage tank body, an air inlet connected with an air outlet of the air compressor and a discharge outlet connected with the preparation device.
In addition, the preferable scheme is that the storage tank body is a horizontal tank body; the feeding joint is arranged at the top of the material storage tank body; the vacuumizing joint is arranged on the side wall of the material storage tank body; the primary air inlet joint and the secondary air inlet joint are arranged at the same end part of the material storage tank body, and the primary air storage tank and the secondary air storage tank are both arranged at the top part of the material storage tank body; the discharge connector is arranged at the other end of the material storage tank body.
In addition, the preferable scheme is that the vacuumizing joint is connected with an air exhaust port of a vacuum pump through a vacuumizing pipe; and a first electric switch valve is arranged on the vacuum tube.
In addition, the preferable scheme is that the feeding joint is connected with the raw material bin through a first feeding pipe; and a second electric switch valve is arranged on the first feeding pipe.
In addition, it is preferable that the primary air tank is connected to the primary air intake joint through a primary air intake pipe; the secondary air storage tank is connected with the secondary air inlet joint through a secondary air inlet pipe; and a third electric switch valve and a fourth electric switch valve are respectively arranged on the primary air inlet pipe and the secondary air inlet pipe.
In addition, the preferable scheme is that a feed inlet of the quantitative box body is connected with a discharge joint of the material storage tank body through a second feed pipe; and a fifth electric switch valve is arranged on the second feeding pipe.
In addition, the preferable scheme is that the air inlet of the quantitative box body is connected with the air outlet of the air compressor through an air inlet pipeline; and a sixth electric switch valve is arranged on the air inlet pipeline.
In addition, the preferable scheme is that the discharge port of the quantitative box body is connected with the preparation device through a discharge pipe; and a seventh electric switch valve is arranged on the discharge pipe.
In addition, the preferable scheme is that a support beam is arranged at the bottom of the quantitative box body; a pressure gauge is arranged at the lower part of the outer side wall of the quantitative box body; the pressure gauge is connected with the support beam.
In addition, the preferable scheme is that the lime quantitative adding device further comprises a control device; the control device is in signal connection with the first electric switch valve, the second electric switch valve, the third electric switch valve, the fourth electric switch valve, the fifth electric switch valve, the sixth electric switch valve, the seventh electric switch valve and the pressure gauge respectively.
According to the technical scheme, the lime quantitative adding device provided by the invention has the advantages that the material storage tank body, the material discharging power device and the quantitative box body are arranged on the same movable bearing device, so that the whole lime quantitative adding device is flexible and mobile, the mobile scheduling can be realized according to different user requirements, the vacuum pumping connector and the vacuum pump are arranged on the material storage tank body, the negative pressure feeding is realized, the structure is simple, and the feeding speed is high; the whole device has good tightness by storing materials in the material storage tank body and conveying the raw materials through a pipeline, and calcium oxide is prevented from deliquescing; the discharge power device can discharge compressed air in batches, discharge capacity is rapid and thorough, and discharge is realized through two-stage compressed air, the primary discharge gas amount is large and the secondary small gas amount is combined, so that the storage amount of a metering box can be accurately controlled, and the accurate metering of lime addition is realized; the time of single discharging is saved, so that the rapid and repeated feeding operation is realized; the dosage of the raw materials is more accurate through the quantitative box body.
To the accomplishment of the foregoing and related ends, one or more aspects of the invention comprise the features hereinafter fully described. The following description and the annexed drawings set forth in detail certain illustrative aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Further, the present invention is intended to include all such aspects and their equivalents.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description taken in conjunction with the accompanying drawings. In the drawings:
FIG. 1 is a schematic structural diagram of a lime dosing device according to an embodiment of the present invention in a feeding state;
FIG. 2 is a schematic structural diagram of a lime quantitative adding device according to an embodiment of the invention in a discharging state;
wherein the reference numerals include: 1-a mobile bearing device, 2-a material storage tank body, 21-a feeding joint, 211-a first feeding pipe, 212-a second electric switch valve, 221-a vacuum pipe, 222-a first electric switch valve, 22-a vacuum joint, 23-a primary air inlet joint, 24-a secondary air inlet joint, 25-a discharge joint, 31-a primary air storage tank, 311-a primary air inlet pipe, 312-a third electric switch valve, 32-a secondary air storage tank, 321-a secondary air inlet pipe, 322-a fourth electric switch valve, 33-an air compressor, 4-a quantitative tank body, 41-a feeding port, 411-a second feeding pipe, 412-a fifth electric switch valve, 42-an air inlet, 421-an air inlet pipeline, 422-a sixth electric switch valve and 43-a discharge port, 431-a discharge pipe, 432-a seventh electric switch valve, 44-a support beam, 45-a pressure gauge, 5-a raw material bin and 6-a vacuum pump.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details.
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 shows a structure of a lime dosing apparatus according to an embodiment of the present invention in a feeding state.
Fig. 2 shows a structure of a lime dosing device according to an embodiment of the present invention in a discharging state.
As shown in fig. 1 and fig. 2, a lime quantitative feeding device comprises a movable carrying device 1; the movable bearing device 1 is provided with a material storage tank body 2, a material discharging power device and a quantitative box body 4; the material storage tank body 2 is provided with a feeding joint 21 connected with the raw material bin 5, a vacuumizing joint 22 connected with a vacuum pump 6, a primary air inlet joint 23, a secondary air inlet joint 24 and a discharging joint 25; the discharging power device comprises a primary air storage tank 31 connected with the primary air inlet joint 23, a secondary air storage tank 32 connected with the secondary air inlet joint 24, and an air compressor 33 connected with the primary air storage tank 31 and the secondary air storage tank 32; the quantitative box body 4 is provided with a feed inlet 41 connected with the discharge joint 25 of the material storage tank body 2, an air inlet 42 connected with an air outlet of the air compressor 33 and a discharge outlet 43 connected with the preparation device.
The material storage tank body 2, the material discharge power device and the quantitative tank body 4 are arranged on the movable bearing device 1, so that the whole lime quantitative adding device is flexible and can realize flexible dispatching according to different user requirements, and the material storage tank body 2 is provided with the vacuumizing connector 22 and the vacuum pump 6, so that negative-pressure feeding is realized, the structure is simple, and the feeding speed is high; the material is stored by the material storage tank body 2 and the raw materials are conveyed by a pipeline, so that the whole device has good tightness and calcium oxide is prevented from deliquescing; the discharge power device can discharge compressed air in batches, discharge capacity is rapid and thorough, and discharge is realized through two-stage compressed air, the primary discharge gas amount is large and the secondary small gas amount is combined, so that the storage amount of the quantitative box body 4 can be accurately controlled, and the accurate metering of lime addition is realized; the time of single discharging is saved, so that the rapid and repeated feeding operation is realized; the dosage of the raw materials is more accurate through the quantitative box body 4.
The movable bearing device 1 is a movable supporting structure, is preferably a vehicle body, and can be replaced by other similar structures with the same effect, the vacuum pump 6 is preferably a multistage turbine vacuum pump which performs vacuum pumping, and has the characteristics of high vacuum degree and high vacuum pumping speed, more importantly, the vacuum pump adopts multistage centrifugation, does not need working fluid during vacuum pumping, and avoids the situation that the traditional water ring vacuum pump needs water as the working fluid for vacuum pumping.
As a preferred scheme of the invention, the storage tank body 2 is a horizontal tank body; the feeding joint 21 is arranged at the top of the material storage tank body 2; the vacuumizing joint 22 is arranged on the side wall of the material storage tank body 2; the primary air inlet joint 23 and the secondary air inlet joint 24 are arranged at the same end part of the material storage tank body 2, and the primary air storage tank 31 and the secondary air storage tank 32 are both arranged at the top part of the material storage tank body 2; the discharge connector 25 is arranged at the other end of the storage tank body 2. Can make the removal bear more reasonable abundant that the space on the device 1 utilized through above-mentioned structural design, furtherly, when removing to bear the device 1 and be the automobile body, elementary air connector 23 and secondary air connector 24 set up the tip that is close to the locomotive at the storage tank body 2, arrange the material and connect 25 setting at the tip that the storage tank body 2 is close to the rear of a vehicle, and air compressor machine 33 sets up the one end that is close to the locomotive at the storage tank body 2.
In order to facilitate the feeding of the material storage tank body 2, as a preferred scheme of the invention, the vacuumizing joint 22 is connected with a vacuumizing port of the vacuum pump 6 through a vacuumizing pipe 221; the evacuation pipe 221 is provided with a first electrically operated on-off valve 222.
In order to make the feeding of the material storage tank body 2 controllable, as a preferred scheme of the invention, the feeding joint 21 is connected with the raw material bin 5 through a first feeding pipe 211; a second electric-operated switching valve 212 is provided on the first feed pipe 211.
In order to facilitate the control of the discharge of the material storage tank body 2, as a preferred scheme of the invention, the primary gas storage tank 31 is connected with the primary gas inlet joint 23 through a primary gas inlet pipe 311; the secondary air reservoir 32 is connected to the secondary air intake joint 24 through a secondary air intake pipe 321; a third electric open/close valve 312 and a fourth electric open/close valve 322 are provided in the primary intake pipe 311 and the secondary intake pipe 321, respectively.
In order to facilitate the control of the discharge capacity of the quantitative box 4, as a preferred scheme of the invention, the feed inlet 41 of the quantitative box 4 is connected with the discharge joint 25 of the storage tank body 2 through a second feed pipe 411; a fifth electric switching valve 412 is provided on the second feed pipe 411.
In order to make the feeding of the quantitative tank 4 controllable, as a preferred embodiment of the present invention, the air inlet 42 of the quantitative tank 4 is connected to the air outlet of the air compressor 33 through an air inlet pipe 421; a sixth electric switch valve 422 is provided in the intake pipe 421.
In order to make the discharge of the quantitative tank 4 controllable, as a preferred embodiment of the present invention, the discharge opening 43 of the quantitative tank 4 is connected to the preparation apparatus through a discharge pipe 431; a seventh electrically operated on-off valve 432 is provided in the discharge pipe 431.
In order to make the measurement of the discharge capacity of the quantitative tank 4 more accurate, as a preferred embodiment of the present invention, a support beam 44 is provided at the bottom of the quantitative tank 4; a pressure gauge 45 is arranged at the lower part of the outer side wall of the quantitative box body 4; the pressure gauge 45 is connected to the support beam 44.
The quantitative box 4 is a closed box, and may be a cube, a cuboid, or a cylinder, which is not limited herein.
In order to facilitate the overall control of the lime adding process, as a preferred scheme of the invention, the lime quantitative adding device also comprises a control device; the control device is in signal connection with the first electric on-off valve 222, the second electric on-off valve 212, the third electric on-off valve 312, the fourth electric on-off valve 322, the fifth electric on-off valve 412, the sixth electric on-off valve 422, the seventh electric on-off valve 432, and the pressure gauge 45, respectively. The automation degree of the whole lime quantitative feeding device is high through the control device, and the operation is convenient.
The working process of the lime quantitative adding device provided by the invention is as follows:
step 1, feeding in a tank body.
Remove and bear device 1 and be close to the former feed bin of calcium oxide preparation factory, open first electric switch valve 222 on the evacuation pipe 221 on the storage tank body 2, close all valves of other connecting tubes on the storage tank body 2, open vacuum pump 6, close first electric switch valve 222 after the evacuation finishes, the vacuum pump is shut down, connect 21 with the discharge gate of former feed bin 5 with the feed connector of storage tank body 2, open second electric switch valve 212 lime raw materials and inhale to storage tank body 2 under the effect of negative pressure, close second electric switch valve 212 after the feeding finishes.
And 2, discharging the tank body.
Moving the bearing device 1 to be close to a receiving stirring tank of a calcium oxide user, connecting a discharge pipe 431 of a quantitative tank body 4 with a feeding port of the receiving stirring tank, opening air inlet pipe valves of a primary air storage tank 31 and a secondary air storage tank 32, closing exhaust pipe valves of the primary air storage tank 31 and the secondary air storage tank 32, starting an air compressor 33, fully storing compressed air in the primary air storage tank 31 and the secondary air storage tank 32, then opening a fifth electric switch valve 412 on a second feeding pipe 411 of the quantitative tank body 4, firstly opening a valve on a primary air inlet pipe of a material storage tank body 2, discharging calcium oxide into the quantitative tank body 4 from a tank truck under the driving of the compressed air, filling 80-90% of the volume of the quantitative tank with the initial air storage amount, then opening a valve on a secondary air inlet pipe of the material storage tank body 2, and ensuring that the volume of the secondary air storage tank is small until the calcium oxide discharged into the quantitative tank body 4 reaches the, and closing a valve on the secondary air inlet pipe and a valve on a discharge pipe of the material storage tank body, then opening a valve on an air inlet pipe of the quantitative box body 4, and driving all materials of the quantitative box body to be discharged into a stirring tank of a user under the driving of an air compressor 33.
Through the embodiment, the quantitative lime adding device provided by the invention has the advantages that:
1. the material storage tank body, the material discharge power device and the quantitative tank body are arranged on the same movable bearing device, so that the whole lime quantitative adding device is flexible and mobile, mobile scheduling can be realized according to different user requirements, and negative pressure feeding is realized by arranging the vacuum pumping joint and the vacuum pump on the material storage tank body, so that the structure is simple, and the feeding speed is high; the whole device has good tightness by storing materials in the material storage tank body and conveying the raw materials through a pipeline, and calcium oxide is prevented from deliquescing; the discharge power device can discharge compressed air in batches, discharge capacity is rapid and thorough, and discharge is realized through two-stage compressed air, the primary discharge gas amount is large and the secondary small gas amount is combined, so that the storage amount of a metering box can be accurately controlled, and the accurate metering of lime addition is realized; the time of single discharging is saved, so that the rapid and repeated feeding operation is realized; the dosage of the raw materials is more accurate through the quantitative box body;
2. the lime storage, feeding and feeding are integrated with a bearing device, a user only needs to set a lime milk preparation stirring tank without setting a lime bin, a lime feeding system and the like, and most of investment required by lime milk preparation is saved for the user; 3. the whole system is sealed in a closed container, thereby avoiding leakage and dust raising of lime and being beneficial to environmental protection;
4. the vacuum pump is adopted for vacuum feeding, and the negative pressure feeding mode has a simple structure and high feeding speed; the vacuum pump adopts multistage centrifugal vacuum pumping, does not need working liquid, avoids the situation that the traditional water ring vacuum pump needs water as the working liquid for vacuum pumping, does not need water for vacuum pumping, avoids the situation that the system needs to be matched with a water tank, saves water and optimizes the spatial arrangement of the bearing device;
5. the quantitative box body adopts compressed air to discharge materials in batches, the discharge capacity is rapid and thorough, and the time of single discharge is saved, so that the rapid and repeated feeding operation is realized;
6. the quantitative box body is metered by a pressure gauge, the weight fed into the quantitative box is accurately calculated by pressure, the metering is accurate, and the defect that the traditional level indicator cannot accurately meter in the box body due to dust flying of lime is overcome;
7. the automation degree of the whole lime quantitative feeding device is high through the control device, and the operation is convenient.
The lime dosing device proposed according to the invention is described above by way of example with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that various modifications may be made to the lime dosing apparatus of the present invention described above without departing from the scope of the invention. Therefore, the scope of the present invention should be determined by the contents of the appended claims.
Claims (10)
1. A lime quantitative feeding device is characterized by comprising a movable bearing device;
the movable bearing device is provided with a material storage tank body, a material discharging power device and a quantitative box body;
the material storage tank body is provided with a feeding joint connected with the raw material bin, a vacuumizing joint connected with a vacuum pump, a primary air inlet joint, a secondary air inlet joint and a discharging joint;
the discharge power device comprises a primary air storage tank connected with the primary air inlet joint, a secondary air storage tank connected with the secondary air inlet joint, and an air compressor connected with the primary air storage tank and the secondary air storage tank;
the quantitative box body is provided with a feed inlet connected with a discharge joint of the material storage tank body, an air inlet connected with an air outlet of the air compressor and a discharge outlet connected with the preparation device.
2. The lime dosing apparatus according to claim 1, wherein,
the material storage tank body is a horizontal tank body;
the feeding joint is arranged at the top of the material storage tank body;
the vacuumizing joint is arranged on the side wall of the material storage tank body;
the primary air inlet joint and the secondary air inlet joint are arranged at the same end part of the material storage tank body, and the primary air storage tank and the secondary air storage tank are both arranged at the top part of the material storage tank body;
the discharge connector is arranged at the other end of the material storage tank body.
3. The lime dosing apparatus according to claim 1, wherein,
the vacuumizing joint is connected with an air pumping port of the vacuum pump through a vacuumizing pipe;
and a first electric switch valve is arranged on the vacuum tube.
4. The lime dosing device according to claim 3, wherein,
the feeding joint is connected with the raw material bin through a first feeding pipe;
and a second electric switch valve is arranged on the first feeding pipe.
5. The lime dosing apparatus according to claim 4, wherein,
the primary air storage tank is connected with the primary air inlet joint through a primary air inlet pipe;
the secondary air storage tank is connected with the secondary air inlet joint through a secondary air inlet pipe;
and a third electric switch valve and a fourth electric switch valve are respectively arranged on the primary air inlet pipe and the secondary air inlet pipe.
6. The lime dosing device according to claim 5, wherein,
the feed inlet of the quantitative box body is connected with the discharge joint of the material storage tank body through a second feed pipe;
and a fifth electric switch valve is arranged on the second feeding pipe.
7. The lime dosing device according to claim 6, wherein,
the air inlet of the quantitative box body is connected with the air outlet of the air compressor through an air inlet pipeline;
and a sixth electric switch valve is arranged on the air inlet pipeline.
8. The lime dosing apparatus according to claim 7, wherein,
the discharge port of the quantitative box body is connected with the preparation device through a discharge pipe;
and a seventh electric switch valve is arranged on the discharge pipe.
9. The lime dosing apparatus according to claim 8, wherein,
a supporting beam is arranged at the bottom of the quantitative box body;
a pressure gauge is arranged at the lower part of the outer side wall of the quantitative box body;
the pressure gauge is connected with the support beam.
10. The lime dosing device according to any one of claims 1 to 9, wherein the lime dosing device further comprises a control device;
the control device is in signal connection with the first electric switch valve, the second electric switch valve, the third electric switch valve, the fourth electric switch valve, the fifth electric switch valve, the sixth electric switch valve, the seventh electric switch valve and the pressure gauge respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010770044.8A CN111994638A (en) | 2020-08-04 | 2020-08-04 | Lime quantitative adding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010770044.8A CN111994638A (en) | 2020-08-04 | 2020-08-04 | Lime quantitative adding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111994638A true CN111994638A (en) | 2020-11-27 |
Family
ID=73462694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010770044.8A Pending CN111994638A (en) | 2020-08-04 | 2020-08-04 | Lime quantitative adding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111994638A (en) |
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2020
- 2020-08-04 CN CN202010770044.8A patent/CN111994638A/en active Pending
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