Medium addition system and medium addition method
The automated medium addition system addresses inefficiencies in manual medium addition by using a conveyor and control apparatus to precisely add medium and water, enhancing efficiency and timely meeting production needs in dense medium coal separation.
Patent Information
- Authority / Receiving Office
- AU · AU
- Patent Type
- Applications
- Current Assignee / Owner
- BEIJING GUODIAN ZHISHEN CONTROL TONGDY
- Filing Date
- 2023-05-30
- Publication Date
- 2026-07-09
AI Technical Summary
The manual addition of medium in dense medium coal separation processes is inefficient, leading to low medium addition efficiency and an inability to meet production demands timely, which hinders efficient separation.
A medium addition system comprising a medium suction apparatus, water addition apparatus, and control apparatus that automates the process by using a conveyor, weighing device, proximity switches, and control apparatus to precisely control the addition of medium and water into a dense medium barrel.
The system enables automatic and efficient medium addition, meeting production demands promptly and facilitating effective separation by improving medium addition efficiency.
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Abstract
Description
CROSS REFERENCE TO RELATED APPLICATION The present application claims the benefits of Chinese Patent Application No. 202210613649.5 filed on May 31, 2022, the content of which is incorporated herein by reference. FIELD The preset disclosure relates to a system control technique, in particular to a medium addition system and a medium addition method. BACKGROUND Dense medium coal separation is a separation method that uses a liquid having a density between clean coal and gangue (or middling coal) as a medium. The principle of dense medium coal separation is that clean coal having a density lower than the medium floats, while gangue or middling coal having a density higher than the medium settles, and then the clean coal and the gangue or middling coal are collected as different products respectively. Dense medium coal separation has the advantages of high separation efficiency, wide range of particle size of feed material, and easy operation, etc. Therefore, an important task for dense medium coal preparation is preparation of a dense medium suspension. A heavy medium suspension is usually prepared from a granular medium solid and water. Because the coal itself carries the medium solid, the loss of the medium solid is inevitable, and a new medium has to be added continuously in the production process. At present, special personnel are usually designated in coal preparation plants to add the medium, prepare the heavy medium suspension and transport the heavy medium suspension. These operations are essentially carried out manually. Consequently, the medium addition efficiency is low, and can’t meet the production demand timely and is not conducive to efficient separation. SUMMARY The embodiments of the present application provide a medium addition system and a method thereof, which can realize automatic medium addition, thereby greatly improve medium addition efficiency, meet the production demand timely and are beneficial to efficient separation. The present application provides a medium addition system, which comprises a medium suction apparatus, a water addition apparatus, a dense medium barrel and a control apparatus, wherein the medium suction apparatus comprises a suction device, a weighing device, a conveyor, a conveying track and a plurality of proximity switches, wherein the suction device is provided with the weighing device thereon and is connected to the conveyor, the conveyor runs on the conveying track, which is arranged above a medium reservoir and is provided with the plurality of proximity switches; the water addition apparatus comprises a clean-water pipe, a clean-water valve and a clean-water flowmeter, wherein the clean-water pipe is used for adding clean water into the dense medium barrel, and the clean-water valve and the clean-water flowmeter are arranged on the clean-water pipe; and the control apparatus is used for controlling the conveyor to run on the conveying track according to state feedbacks from the proximity switches, and controlling the suction device to suck a medium in the medium reservoir and inject the sucked medium into the dense medium barrel according to a count provided by the weighing device; the control apparatus is further used for controlling the cleanwater valve to open and injecting clean water into the dense medium barrel through the clean-water pipe, and controlling the clean-water valve to close according to a count provided by the clean-water flowmeter. Optionally, the conveying track is arranged in a grid from, and four boundaries of each grid formed by the conveying track are provided with a proximity switch respectively. Optionally, the system further comprises an air supply apparatus, which comprises an air duct and a pneumatic agitation valve, wherein the air duct is used for blowing air into the dense medium barrel, and the pneumatic agitation valve is arranged on the air duct; and the control apparatus is further used for controlling the pneumatic agitation valve to open or close. Optionally, the system further comprises a conveying apparatus, which comprises a conveying pump and a conveying pump flowmeter, wherein the control apparatus is further used for controlling the conveying pump to open to convey the substance in the dense medium barrel to the dense medium system, and controlling the conveying pump to close according to a count provided by the conveying pump flowmeter; the system further comprises a liquid level meter; the control apparatus is further used for controlling the conveying pump and the pneumatic agitation valve to shut off according to a liquid level detected by the liquid level meter. In another aspect, the present application further provides a medium addition method applied in the medium addition system described in the above scheme, and the medium addition method comprises: acquiring medium addition amount and water addition amount of a current medium addition task; controlling the conveyor to run on the conveying track, and controlling the conveyor to run to a target suction area on the basis of state feedbacks of all proximity switches, by the control apparatus; controlling the suction device, by the control apparatus, to suck the medium below the target position in the medium reservoir, and weighing the medium in real time by means of the weighing device, till the medium addition amount of the current medium addition task is reached, and injecting the sucked medium into the dense medium barrel; and controlling the clean-water valve by the control apparatus to open, injecting clean water into the dense medium barrel through the clean-water pipe, and carrying out real-time detection with the clean-water flowmeter till the injected clean water reaches the water addition amount in the current medium addition task. Optionally, the conveying track is arranged in a grid from, and four boundaries of each grid formed by the conveying track are provided with a proximity switch respectively, and a suction area is divided according to vertexes of each grid; the step of controlling the conveyor to run on the conveying track and controlling the conveyor to run to a target suction area on the basis of state feedbacks of all proximity switches by the control apparatus comprises: acquiring a reference suction area to which the conveyor ran in the latest medium addition task, and selecting a suction area adjacent to the reference suction area as a target suction area for the current medium addition task according to a preset suction order, by the control apparatus; and controlling the conveyor to run on the conveying track, and controlling the conveyor to run on the basis of state feedbacks of all proximity switches till the state feedbacks of the proximity switches around the target suction area are a proximity state. Optionally, the step of controlling the suction device by the control apparatus to suck the medium below the target position in the medium reservoir and weighing the medium in real time by means of the weighing device till the medium addition amount of the current medium addition task is reached comprises: controlling the suction device by the control apparatus to such the medium below the target suction area in the medium reservoir and weighing the sucked medium in real time by means of the weighing device; selecting a suction area adjacent to the target suction area as an updated target suction area according to a preset order, when a weighing count has no change within a preset time interval or an increase of the weighing count is smaller than a preset threshold; controlling the conveyor to run on the conveying track, and controlling the conveyor to run to the updated target suction area on the basis of the state feedbacks of all proximity switches; and controlling the suction device, by the control apparatus, to suck the medium below the updated target suction area in the medium reservoir, and weighing the medium in real time by means of the weighing device, till the medium addition amount of the current medium addition task is reached, and injecting the sucked medium into the dense medium barrel. Optionally, the method further comprises the following step when or after controlling the clean-water valve by the control apparatus to open and injecting clean water into the dense medium barrel and carrying out real-time detection with the clean-water flowmeter: controlling the pneumatic agitation valve by the control apparatus to open and blow air into the dense medium barrel. Optionally, the method further comprises the following step when controlling the clean-water valve by the control apparatus to open and injecting clean water into the dense medium barrel and carrying out real-time detection with the clean-water flowmeter: controlling the liquid level meter by the control apparatus to detect the liquid level in the dense medium barrel in real time; and controlling the clean-water valve to close when it is detected that the liquid level reaches a preset high limit. Optionally, the method further comprises the following step after controlling the clean-water valve by the control apparatus to open and injecting clean water into the dense medium barrel through the clean-water pipe and carrying out real-time detection with the clean-water flowmeter till the injected clean water reaches the water addition amount in the medium addition task: controlling the conveying pump by the control apparatus to open and delivering the substance in the dense medium barrel to the dense medium system, and carrying out real-time detection with the conveying pump flowmeter till the delivered amount reaches a preset delivery amount; the method further comprises the following step when controlling the conveying pump by the control apparatus to open and delivering the substance in the dense medium barrel to the dense medium system and carrying out real-time detection with the conveying pump flowmeter till the delivered amount reaches a preset delivery amount: controlling the liquid level meter to detect the liquid level in the dense medium barrel in real time; and controlling the conveying pump and the pneumatic agitation valve to shut off when the detected liquid level reaches a preset low limit. Compared with the related art, the medium addition system provided by the present application can control the conveyor to run on the conveying track, control the suction device to suck the medium in the medium reservoir according to the count provided by the weighing device, control the clean-water valve to open and inject clean water into the dense medium barrel through the clean-water pipe, and control the clean-water valve to close according to the count provided by the clean-water flowmeter. Thus, the medium addition process can be completed automatically, the medium addition efficiency is greatly improved, the production demand is met timely, and efficient separation is facilitated. Other features and advantages of the present application will be detailed in the following description, and will become obvious partially from the description or be understood through implementation of the present application. Other advantages of the present application can be realized and obtained with the scheme described in the specification and the drawings. BRIEF DESCRITION OF THE DRAWINGS The accompanying drawings are provided for further understanding on the technical scheme of the present application, and constitute a part of the specification. These drawings are used in conjunction with the embodiments of the present application to interpret the technical scheme of the present application, but are not intend to constitute any limitation to the technical scheme of the present application. Fig. 1 is a schematic structural diagram of a medium addition system provided by an embodiment of the present application; Fig. 2 is a schematic structural diagram of another medium addition system provided by an embodiment of the present application; Fig. 3 is a schematic structural diagram of yet another medium addition system provided by an embodiment of the present application; Fig. 4 is a schematic structural diagram of yet another medium addition system provided by an embodiment of the present application; Fig. 5 is a schematic structural diagram of yet another medium addition system provided by an embodiment of the present application; Fig. 6 is a schematic flow diagram of a medium addition method provided by an embodiment of the present application. DETAILED DESCRIPTION The present application provides a medium addition system, which, as shown in Fig. 1, comprises a medium suction apparatus 11, a water addition apparatus 12, a dense medium barrel 13 and a control apparatus 14. The medium suction apparatus 11 comprises a suction device 111, a weighing device 112, a conveyor 113, a conveying track 114 and a plurality of proximity switches 115, wherein the suction device 111 is provided with the weighing device 112 thereon and is connected to the conveyor 113, which runs on the conveying track 114 arranged above the medium reservoir, and the plurality of proximity switches 115 are arranged on the conveying track 114. The water addition apparatus 12 comprises a clean-water pipe 121, a clean-water valve 122 and a clean-water flowmeter 123, wherein the clean-water pipe 121 is used for adding clean water into the dense medium barrel 13, and the clean-water valve 122 and the clean-water flowmeter 123 are arranged on the clean-water pipe 121. The control apparatus 14 is used for controlling the conveyor 113 to run on the conveying track 114 according to state feedbacks from the proximity switches 115, and controlling the suction device 111 to suck a medium in the medium reservoir and inject the sucked medium into the dense medium barrel 13 according to a count provided by the weighing device 116; the control apparatus is further used for controlling the clean-water valve 122 to open and injecting clean water into the dense medium barrel 13 through the clean-water pipe 121, and controlling the clean-water valve 122 to close according to a count provided by the clean-water flowmeter 123. In an illustrative example, the proximity switch is a position switch that can be operated without direct mechanical contact with moving parts. When the distance between an object and a sensing surface of the proximity switch is smaller than a distance for action, the proximity switch can be actuated without mechanical contact and any pressure. Therefore, when proximity switches are arranged on the conveying track, the proximity switches where the conveyor is located can be ascertained by means of the state feedbacks of the proximity switches, so that the control apparatus can control the conveyor to run on the conveying track according to the state feedbacks of the proximity switches. In an illustrative example, specifically, the suction device may be a suction cup, the conveyor may be an overhead crane, and the conveying track may be an overhead crane track. In an illustrative example, the water addition apparatus 12 is arranged above the dense medium barrel 13 to facilitate the water addition apparatus to add water into the dense medium barrel 13. In an illustrative example, the conveying track is arranged in a grid from, and four boundaries of each grid formed by the conveying track are provided with a proximity switch respectively. In an illustrative example, the conveying track is arranged in a grid form to enable the conveyor to reach areas defined on the basis of the vertices of the grid, so that the medium can be sucked in different areas to achieve uniform suction. In an illustrative example, in the case that the conveyor is an overhead crane and the conveyor track is an overhead crane track, simply a plurality of cross beams that are parallel to each other and have the same length may be arranged, and longitudinal beams perpendicular to the cross beams may be arranged respectively at the two ends of the cross beams, and then proximity switches may be arranged on the cross beams so that the connecting wires of the proximity switches can form a grid. In an illustrative example, the state feedbacks of the proximity switches mounted on the four boundaries of each grid can tell the boundaries of the grids where the conveyor is located. In an illustrative example, on the basis of the medium addition system shown in Fig. 1, as shown in Fig. 2, the system further comprises an air supply apparatus 15, which comprises an air duct 151 and a pneumatic agitation valve 152. The air duct 151 is used to blow air into the dense medium barrel 13, and the air agitation valve 152 is arranged on the air duct 151. In an illustrative example, arranging the air supply apparatus 15 above the dense medium barrel 13 is helpful for extensively mixing the medium and water in the medium addition system. The control apparatus 14 is further used for controlling the pneumatic agitation valve 152 to open or close. In an illustrative example, arranging the air supply apparatus 15 above the dense medium barrel 13 is helpful for mixing the medium and water more extensively. In an illustrative example, on the basis of the medium addition system shown in Fig. 2, as shown in Fig. 3, the system further comprises a conveying apparatus 16, which comprises a conveying pump 161 and a conveying pump flowmeter 162 arranged on the conveying pump 161. The control apparatus 14 is further used to control the conveying pump 161 to operate to convey the substance in the dense medium barrel 13 to the dense medium system, and control the conveying pump 161 to shut off according to the count provided by the conveying pump flowmeter 162. In an illustrative example, the conveying apparatus 16 is arranged below the dense medium barrel 13, so that the substance in the dense medium barrel 13 can be conveyed to the dense medium system by gravity. In an illustrative example, on the basis of the medium addition system shown in Fig. 3, as shown in Fig. 4, the system further comprises a liquid level meter 17. The control apparatus 14 is further used to control the conveying pump 161 and the pneumatic agitation valve 152 to shut off according to the liquid level detected by the liquid level meter 17. In an illustrative example, on the basis of the medium addition system shown in Fig. 4, as shown in Fig. 4, the system further comprises an anti-settling apparatus 18. The anti-settling apparatus 18 is used for supporting the medium added into the dense medium barrel 13 to prevent the medium from settling down to the bottom of the dense medium barrel 13, which is not conducive to extensive mixing of the medium and clean water. In an illustrative example, the anti-settling apparatus 18 may be a perforated strainer. The medium addition system provided by the embodiments of the present application can control the conveyor to run on the conveying track, control the suction device to suck the medium in the medium reservoir according to the count provided by the weighing device, control the clean-water valve to open and inject clean water into the dense medium barrel through the clean-water pipe, and control the clean-water valve to close according to the count provided by the clean-water flowmeter. Thus, the medium addition process can be completed automatically, the medium addition efficiency is greatly improved, the production demand is met timely, and efficient separation is facilitated. The present disclosure further provides a medium addition method applied in the medium addition system described in any of the above embodiments. As shown in Fig. 6, the medium addition method comprises: step 201: acquiring medium addition amount and water addition amount of a current medium addition task; step 202: controlling the conveyor to run on the conveying track, and controlling the conveyor to run to a target suction area on the basis of state feedbacks of all proximity switches, by the control apparatus; step 203: controlling the suction device, by the control apparatus, to suck the medium below the target position in the medium reservoir, and weighing the medium in real time by means of the weighing device, till the medium addition amount of the current medium addition task is reached, and injecting the sucked medium into the dense medium barrel; and step 204: controlling the clean-water valve by the control apparatus to open, injecting clean water into the dense medium barrel through the clean-water pipe, and carrying out real-time detection with the clean-water flowmeter till the injected clean water reaches the water addition amount in the current medium addition task. In an illustrative example, the conveying track is arranged in a grid from, and four boundaries of each grid formed by the conveying track are provided with a proximity switch respectively, and a suction area is divided according to vertexes of each grid. In an illustrative example, the vertices of a grid are actually connected with the boundaries of four grids, and the conveying track corresponding to the connected four boundaries is a suction area defined according to the vertices of the grid. In an illustrative example, the control apparatus controls the conveyor to run on the conveying track and controls the conveyor to run to a target suction area on the basis of the state feedbacks of all proximity switches, including: Firstly, acquiring a reference suction area to which the conveyor ran in the latest medium addition task, and selecting a suction area adjacent to the reference suction area as a target suction area for the current medium addition task according to a preset suction order, by the control apparatus; and secondly, controlling the conveyor to run on the conveying track, and controlling the conveyor to run on the basis of state feedbacks of all proximity switches till the state feedbacks of the proximity switches around the target suction area are a proximity state. In an illustrative example, the preset suction order may be sucking by rows or by columns, or any other preset order. In an illustrative sample, the step of controlling the suction device by the control apparatus to suck the medium below the target position in the medium reservoir and weighing the medium in real time by means of the weighing device till the medium addition amount of the current medium addition task is reached comprises: firstly, controlling the suction device by the control apparatus to such the medium below the target suction area in the medium reservoir and weighing the sucked medium in real time by means of the weighing device; secondly, selecting a suction area adjacent to the target suction area as an updated target suction area according to a preset order, when a weighing count has no change within a preset time interval or an increase of the weighing count is smaller than a preset threshold; thirdly, controlling the conveyor to run on the conveying track, and controlling the conveyor to run to the updated target suction area on the basis of the state feedbacks of all proximity switches; and finally, controlling the suction device, by the control apparatus, to suck the medium below the updated target suction area in the medium reservoir, and weighing the medium in real time by means of the weighing device, till the medium addition amount of the current medium addition task is reached, and injecting the sucked medium into the dense medium barrel. In an illustrative example, if the weighing count has no change within a preset time interval or the increase of the weighing count is smaller than a preset threshold when the medium below the target suction area is sucked, it indicates that the medium in this suction area is insufficient; in that case, the selection of the target suction area can be updated in order to evenly suck the medium in the medium reservoir. In an illustrative example, the method further comprises the following step when or after controlling the clean-water valve by the control apparatus to open and injecting clean water into the dense medium barrel and carrying out real-time detection with the clean-water flowmeter: controlling the pneumatic agitation valve by the control apparatus to open and blow air into the dense medium barrel through the air duct. In an illustrative example, the method further comprises the following step when controlling the clean-water valve by the control apparatus to open and injecting clean water into the dense medium barrel and carrying out real-time detection with the clean-water flowmeter: firstly, controlling the liquid level meter by the control apparatus to detect the liquid level in the dense medium barrel in real time; and secondly, controlling the clean-water valve to close when it is detected that the liquid level reaches a preset high limit. In an illustrative example, the method further comprises the following step after controlling the cleanwater valve by the control apparatus to open and injecting clean water into the dense medium barrel through the clean-water pipe and carrying out real-time detection with the clean-water flowmeter till the injected clean water reaches the water addition amount in the medium addition task: controlling the conveying pump by the control apparatus to open and delivering the substance in the dense medium barrel to the dense medium system, and carrying out real-time detection with the conveying pump flowmeter till the delivered amount reaches a preset delivery amount; the method further comprises the following step when controlling the conveying pump by the control apparatus to open and delivering the substance in the dense medium barrel to the dense medium system and carrying out real-time detection with the conveying pump flowmeter till the delivered amount reaches a preset delivery amount: firstly, controlling the liquid level meter to detect the liquid level in the dense medium barrel in real time; and secondly, controlling the conveying pump and the pneumatic agitation valve to shut off when the detected liquid level reaches a preset low limit. The medium addition method provided by the embodiments of the present application can control the conveyor to run on the conveying track, control the suction device to suck the medium in the medium reservoir according to the count provided by the weighing device, control the clean-water valve to open and inject clean water into the dense medium barrel through the clean-water pipe, and control the clean-water valve to close according to the count provided by the clean-water flowmeter. Thus, the medium addition process can be completed automatically, the medium addition efficiency is greatly improved, the production demand is met timely, and efficient separation is facilitated. The present disclosure further provides a medium addition apparatus, which comprises a memory and a processor, wherein a computer program is stored in the memory, and, when the computer program in the memory is executed by the processor, the medium addition method described in any of the above embodiments is executed. The present disclosure further provides a storage medium, on which computer-executable commands are stored, and the computer-executable commands are used to execute the media insertion method described in any of the above embodiments. While a number of embodiments are described in the present application, the description is illustrative rather than limiting. In addition, it is obvious to those skilled in the art that more embodiments and implementations are possible within the scope of the embodiments described in the present application. While many possible combinations of features are shown in the drawings and discussed in specific embodiments, many other combinations of the disclosed features are also possible. Unless particularly restricted, any feature or element of any embodiment may be used in combination with or instead of any other feature or element of any other embodiment. The present application includes and contemplates combinations with features and elements known to those having ordinary skills in the art. The embodiments, features and elements disclosed in the present application may also be combined with any existing features or elements to form a unique inventive scheme as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive schemes to form another unique inventive scheme as defined by the claims. Therefore, it may be understood that any feature shown and / or discussed in the present application may be implemented individually or in any suitable combination. Therefore, the embodiments are not subject to any other limitation, except limitations applied in accordance with the appended claims and their equivalents. Moreover, various modifications and variations may be made within the scope of protection of the appended claims. Furthermore, when describing representative embodiments, the specification may have presented the method and / or process as a specific sequence of steps. However, the method or process may not be limited to the specific order of steps described herein, to the extent that the method or process does not depend on that order. Other sequences of steps are also possible, as will be understood by those skilled in the art. Therefore, the specific order of steps set forth in the specification should not be construed as limiting the claims. In addition, the claims directed to the method and / or process may not be limited to the execution of the steps in the given orders, and those skilled in the art can easily understand that these orders can be changed and still remain within the spirit and scope of the embodiments of the present application. Those having ordinary skills in the art can readily understand that the functional modules / units in all or some of the steps, systems, and devices in the method of the present disclosure disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. In hardware implementation, the division among the functional modules / units mentioned in the above description may not always corresponding to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be executed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or may be implemented as hardware, or may be implemented as integrated circuits, such as application specific integrated circuits (ASICs). Such software may be distributed in computer readable media, which may comprise computer storage media (or non-transitory media) and communication media (or transitory media). It is well known to those having ordinary skills in the art that the term “computer storage media” comprise volatile media, non-volatile media, removable media, and non-removable media that are implemented in any method or technique for storing information (e.g., computer readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to RAM, ROM, EEPROM, flash memory or other memory techniques, CD-ROM, DVD or other optical disk storage devices, magnetic cassette, magnetic tape, magnetic disk, or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by computers. Moreover, it is well known to those having ordinary skills in the art that communication media usually contain computer readable instructions, data structures, program modules, or other data in modulated data signals, such as in carrier or other transmission mechanisms, and may include any information delivery medium.
Claims
2023278381 25 Feb 20261. A medium addition method applied in a medium addition system, the medium addition system comprises a medium suction apparatus, a water addition apparatus, a dense medium barrel and a control apparatus, whereinthe medium suction apparatus comprises a suction device, a weighing device, a conveyor, a conveying track and a plurality of proximity switches, wherein the suction device is provided with the weighing device thereon and is connected to the conveyor, the conveyor runs on the conveying track, which is arranged above a medium reservoir and is provided with the plurality of proximity switches;the water addition apparatus comprises a clean-water pipe, a clean-water valve and a clean-water flowmeter, wherein the clean-water pipe is used for adding clean water into the dense medium barrel, and the clean-water valve and the clean-water flowmeter are arranged on the clean-water pipe; andthe control apparatus is used for controlling the conveyor to run on the conveying track according to state feedbacks from the proximity switches, and controlling the suction device to suck a medium in the medium reservoir and inject the sucked medium into the dense medium barrel according to a count provided by the weighing device; the control apparatus is further used for controlling the clean-water valve to open and injecting clean water into the dense medium barrel through the clean-water pipe, and controlling the clean-water valve to close according to a count provided by the clean-water flowmeter;the medium addition method comprises:acquiring medium addition amount and water addition amount of a current medium addition task;controlling the conveyor to run on the conveying track, and controlling the conveyor to run to a target suction area on the basis of state feedbacks of all proximity switches, by the control apparatus;controlling the suction device, by the control apparatus, to suck the medium below the target position in the medium reservoir, and weighing the medium in real time by means of the weighing device, till the medium addition amount of the current medium addition task is reached, and injecting the sucked medium into the dense medium barrel; andcontrolling the clean-water valve by the control apparatus to open, injecting clean water into the dense medium barrel through the clean-water pipe, and carrying out real-time detection with the clean-water flowmeter till the injected clean water reaches the water addition amount in the current medium addition task;wherein the conveying track is arranged in a grid from, and four boundaries of each grid formed by the conveying track are provided with a proximity switch respectively, and a suction area is divided according to vertexes of each grid;the step of controlling the conveyor to run on the conveying track and controlling the conveyor to run to a target suction area on the basis of state feedbacks of all proximity switches by the control apparatus comprises:acquiring a reference suction area to which the conveyor ran in the latest medium addition task, and selecting a suction area adjacent to the reference suction area as a target suction area for the current medium addition task according to a preset suction order, by the control apparatus; and2023278381 25 Feb 2026controlling the conveyor to run on the conveying track, and controlling the conveyor to run on the basis of state feedbacks of all proximity switches till the state feedbacks of the proximity switches around the target suction area are a proximity state.
2. The medium addition method of claim 1, wherein the step of controlling the suction device by the control apparatus to suck the medium below the target position in the medium reservoir and weighing the medium in real time by means of the weighing device till the medium addition amount of the current medium addition task is reached comprises:controlling the suction device by the control apparatus to such the medium below the target suction area in the medium reservoir and weighing the sucked medium in real time by means of the weighing device;selecting a suction area adjacent to the target suction area as an updated target suction area according to a preset order, when a weighing count has no change within a preset time interval or an increase of the weighing count is smaller than a preset threshold;controlling the conveyor to run on the conveying track, and controlling the conveyor to run to the updated target suction area on the basis of the state feedbacks of all proximity switches; andcontrolling the suction device, by the control apparatus, to suck the medium below the updated target suction area in the medium reservoir, and weighing the medium in real time by means of the weighing device, till the medium addition amount of the current medium addition task is reached, and injecting the sucked medium into the dense medium barrel.
3. The medium addition method of claim 1 or 2, wherein the method further comprises the following step when or after controlling the clean-water valve by the control apparatus to open and injecting clean water into the dense medium barrel and carrying out real-time detection with the clean-water flowmeter:controlling the pneumatic agitation valve by the control apparatus to open and blow air into the dense medium barrel through the air duct.
4. The medium addition method of any one of claim 1 to 3, wherein the method further comprises the following step when controlling the clean-water valve by the control apparatus to open and injecting clean water into the dense medium barrel and carrying out real-time detection with the clean-water flowmeter:controlling the liquid level meter by the control apparatus to detect the liquid level in the dense medium barrel in real time; andcontrolling the clean-water valve to close when it is detected that the liquid level reaches a preset high limit.
5. The medium addition method of any one of claims 1 to 4, wherein the method further comprises the following step after controlling the clean-water valve by the control apparatus to open and injecting clean water into the dense medium barrel through the clean-water pipe and carrying out real-time detection with the clean-water flowmeter till the injected clean water reaches the water addition amount in the medium addition task:controlling the conveying pump by the control apparatus to open and delivering the substance in the dense medium barrel to the dense medium system, and carrying out real-time detection with the conveying pump flowmeter till the delivered amount reaches a preset delivery amount;the method further comprises the following step when controlling the conveying pump by the control apparatus to open and delivering the substance in the dense medium barrel to the dense medium system and carrying out real-time detection with the conveying pump flowmeter till the delivered amount reaches a preset delivery amount:2023278381 25 Feb 2026controlling the liquid level meter to detect the liquid level in the dense medium barrel in real time; andcontrolling the conveying pump and the pneumatic agitation valve to shut off when the detected liquid level reaches a preset low limit.