Automatic device for weighing amount of bubble scraped by laboratory flotation machine

Abstract

The utility model discloses a laboratory flotation machine scrape bubble quantity automatic weighing device belongs to mineral processing engineering technical field. Including the box, the box one side is equipped with the flotation groove, weighing sensor and the ore receiving container, is equipped with the rotating component above the flotation groove, and the output of rotating component is equipped with the scraper for the bubble scraping, and the ore receiving container is used for receiving the foam, and the weighing sensor is weighed to the foam, and is equipped with the water supply pipe on the flotation groove, is used to the water supplement in the flotation groove, the utility model discloses through the high accuracy weighing sensor to the scraping of the ore receiving container in the object and carries out the sustained weighing, and the data processing unit real -time computation quality change, replaces the current reliance on manual naked -eye observation and experience judgement, can eliminate the human error, provides reliable data basis for the subsequent accurate control, through the built -in water supplement amount conversion model, according to the real -time measured scraping bubble quality change rate automatic calculation required water supplement amount, and real -time display, operator fills the water according to the display value, and the convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of mineral processing engineering technology, and in particular to an automatic weighing device for skimming foam in a laboratory flotation machine. Background Technology

[0002] In existing laboratory flotation machine operations, the common method is for operators to continuously observe changes in the pulp level in the flotation cell with the naked eye, and combine this with their personal experience to judge the thickness of the froth layer and the amount of froth to be scraped off. When a drop in the liquid level is observed (usually due to the reduction in pulp volume caused by the scraping off of froth), the operator manually adds water to the flotation cell to maintain the preset stable liquid level.

[0003] The fundamental flaw in existing technologies lies in the lack of real-time, accurate, and continuous measurement of the amount of foam scraped, thus lacking the ability to quickly, accurately, and automatically control the amount of water replenished. This leads to a series of problems such as poor level control accuracy, low reliability of test results, and cumbersome operation. Utility Model Content

[0004] The purpose of this invention is to solve the problems of poor liquid level control accuracy, low reliability of test results, and cumbersome operation in the existing technology, which relies on manual observation and experience judgment. Therefore, an automatic weighing device for skimming foam in laboratory flotation machines is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An automatic weighing device for foam scraping in a laboratory flotation machine includes a housing. A flotation cell, a weighing sensor, and a receiving container are provided on one side of the housing. A rotating assembly is provided above the flotation cell. The output end of the rotating assembly is provided with a scraper for scraping out foam. The receiving container is used to receive foam. The weighing sensor weighs the foam. A water supply pipe is provided on the flotation cell for replenishing water into the flotation cell.

[0006] In some embodiments, a foam guide plate is provided on the top side of the flotation cell as a foam outlet.

[0007] In some embodiments, the rotating assembly includes a first drive motor, a first drive gear, a first synchronizing gear, a first synchronizing belt, and a connecting rod. The first synchronizing belt is used for synchronous transmission between the first drive gear and the first synchronizing gear, and the bottom end of the connecting rod is connected to the scraper.

[0008] In some embodiments, a rotating platform is provided below the weighing sensor, which is used to drive the weighing sensor and the ore receiving container to rotate, so that the foam is dispersed and falls onto the ore receiving container.

[0009] In some embodiments, the rotary table includes a support base, a connecting shaft, and a support plate; a second synchronous gear is provided on the connecting shaft, and the second synchronous gear is connected to a second drive gear via a second synchronous belt, and the second drive gear is driven to rotate by a second drive motor.

[0010] In some embodiments, the weighing sensor is located at the center of the receiving container and the support plate, and limiting members are provided at the edges of the receiving container and the support plate to maintain the stability of the receiving container.

[0011] In some embodiments, the weighing sensors are provided in multiple locations, all located at the edge of the support plate, and each of the multiple weighing sensors has a multiple receiving container on its top for individually receiving the falling foam.

[0012] In some embodiments, the bottom end of the foam guide plate has a bucket-shaped structure for the foam to fall into the ore receiving container in a concentrated manner.

[0013] In some embodiments, the height of the scraper is adjustable, a plug-in post is provided above the middle of the scraper, the plug-in post is provided with a plurality of positioning holes, the bottom of the connecting rod is provided with a threaded hole and a bolt adapted to the threaded hole, the bolt passes through the threaded hole and is inserted into the positioning hole to fix the position of the scraper and adjust the horizontal height of the scraper.

[0014] In some embodiments, a spirit level is provided on the support plate, which is used to check the levelness of the support plate and the ore receiving container.

[0015] Compared with the prior art, the present invention provides an automatic weighing device for skimming foam in a laboratory flotation machine, which has the following beneficial effects.

[0016] 1. This utility model uses a high-precision weighing sensor to continuously weigh the scraped material inside the ore container, and the data processing unit calculates the mass change in real time. This replaces the existing method that relies on manual observation and experience, which can eliminate human error and provide a reliable data foundation for subsequent precise control.

[0017] 2. This utility model automatically calculates the required amount of water replenishment based on the real-time measured rate of change in the quality of the foam scraping by using a built-in water replenishment conversion model, and displays the result in real time. The operator can simply replenish water according to the displayed value, making it convenient to use.

[0018] 3. This utility model uses a rotating table to drive the ore receiving container to rotate slowly, which can disperse the foam drop points and prevent it from accumulating locally in the container, thus preventing weighing distortion. In addition, the design of multiple ore receiving containers allows for the continuous collection of multiple parallel samples in one experiment. This can prevent single cup overflow and obtain an average value, which can greatly improve the reproducibility and accuracy of experimental data.

[0019] Other advantages, objectives and features of this invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be taught by practice of this invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a side view of the structure of this utility model.

[0022] Figure 3 This is a front view structural diagram of the present invention.

[0023] Figure 4 This is a top view of the structure of this utility model.

[0024] Figure 5 This is a schematic diagram of the rotating assembly of this utility model.

[0025] Figure 6 This is a schematic diagram of the structure of this utility model.

[0026] Figure 7 This is a schematic diagram of the structure of this utility model.

[0027] In the picture: 1. Housing; 2. Flotation cell; 201. Foam guide plate; 3. Rotating assembly; 301. First drive motor; 302. First drive gear; 303. First synchronous gear; 304. First synchronous belt; 305. Connecting rod; 4. Weighing sensor; 5. Ore receiving container; 6. Rotary table; 601. Support base; 602. Connecting shaft; 603. Support plate; 604. Second synchronous gear; 605. Second drive motor; 606. Second drive gear; 607. Second synchronous belt; 7. Scraper; 8. Limiting component; 801. Sleeve; 802. Connecting column; Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] Reference Figure 1-5An automatic weighing device for foam scraping in a laboratory flotation machine includes a housing 1, a flotation cell 2 on one side of the housing 1, a rotating assembly 3 above the flotation cell 2, and a scraper 7 at the output end of the rotating assembly 3. The rotating assembly 3 is used to drive the scraper 7 to rotate continuously, concentrate the foam generated at the top of the flotation cell 2 and push it forward. The scraper 7 also radially squeezes the foam, causing it to continue to be pushed upward after approaching the edge of the flotation cell 2, and finally discharge the foam from the flotation cell 2.

[0030] Among them, the scraper 7 is an inclined plate, and a foam guide plate 201 is provided on one side of the top of the flotation cell 2 as a foam outlet.

[0031] The end of the scraper 7 away from the rotating component 3 has a radial gap with the inner wall of the flotation cell 2 to avoid collision and scraping of the scraper 7 with the inner wall of the flotation cell 2. Optionally, the radial gap between the scraper 7 and the flotation cell 2 is 2mm to avoid collision between the scraper 7 and the flotation cell 2 and reduce foam residue.

[0032] Below the foam guide plate 201 are a receiving container 5, a weighing sensor 4 and a rotating table 6. The bottom of the receiving container 5 is connected to the rotating table 6 through the weighing sensor 4.

[0033] The weighing sensor 4 is a high-precision weighing sensor. Preferably, a waterproof, corrosion-resistant, and highly sensitive strain gauge or piezoelectric weighing sensor is selected, with a range covering the expected maximum amount of foam removal.

[0034] The load cell 4 is directly integrated below the concentrate receiving container 5 or integrated at the bottom of the support that supports the receiving container 5, ensuring that the sensor stably supports the receiving container 5. In order to avoid interference from external vibrations to the receiving container 5, a vibration damping pad can be installed between the load cell 4 and the rotary table 6 to attenuate the interference of external vibrations on the load cell signal.

[0035] The receiving container 5 is a lightweight, non-adhesive, and easy-to-clean container that can be conveniently placed on the support that supports the receiving container 5 on top of the weighing sensor 4.

[0036] In use, the receiving container 5 receives the scraped material discharged through the foam guide plate 201, and the mass of the scraped material is detected by the weighing sensor 4. The scraped material from the scraper 7 mainly consists of foam and minerals. After the scraped material falls into the receiving container 5, the data processing unit continuously collects the sensor signal of the weighing sensor 4, deducts the tare weight of the receiving container 5, and calculates the change in mass.

[0037] The water replenishment conversion model is as follows: The scraped material is mainly foam and minerals, and its density ρ can be obtained through experiments. The water replenishment requirement Q = (m / t) / ρ, which is the volumetric flow rate of liquid that needs to be replenished to maintain a stable liquid level. The calculated Q is displayed on the sensor display screen in real time as the water replenishment flow rate.

[0038] In summary, achieving real-time data visualization and zero-delay operational decisions allows the screen to directly display the conversion results of skimming quality and water replenishment volume. Operators can know the precise water replenishment amount without calculation, which is beneficial for maintaining liquid level balance. Adopting this solution reduces operational burden, improves experimental efficiency and focus, and eliminates the need for operators to frequently observe the liquid level during the experiment; they only need to add water according to the water replenishment volume displayed on the screen.

[0039] As one water replenishment method in the above embodiment, a water supply pipe can be installed on the side wall of the flotation cell 2. The water supply pipe is connected to a metering pump and a water tank. After the metering pump is turned on, water is replenished into the flotation cell 2 through the water supply pipe according to the water replenishment amount on the screen. The water flows down along the inner wall of the flotation cell 2 to prevent water droplets from splashing on the liquid surface and reduce the impact on the foam.

[0040] As one embodiment of the rotating component 3 in the above embodiments, the rotating component 3 includes a first drive motor 301 disposed inside the housing 1. The rotating end of the first drive motor 301 is provided with a first drive gear 302. A first synchronous gear 303 is provided inside the housing 1 at a position corresponding to the center point of the flotation cell 2. A first synchronous belt 304 is provided on the outer side of the first drive gear 302 and the first synchronous gear 303. A connecting rod 305 that penetrates downward is provided in the middle of the first synchronous gear 303. The bottom end of the connecting rod 305 is connected to the scraper 7.

[0041] In use, the first drive motor 301 drives the connecting rod 305 and the scraper 7 to rotate through the first drive gear 302, the first synchronous belt 304 and the first synchronous gear 303, so that the foam is continuously positioned in front of the scraper 7 in the direction of rotation, and the foam is brought close to the foam guide plate 201 and discharged outward through the foam guide plate 201 by the radial squeezing action of the scraper 7.

[0042] The bottom surface of scraper 7 is 5-10 mm higher than the slurry surface to ensure that scraper 7 only scrapes the froth layer without agitating the slurry, thus preventing the slurry from being entrained in the froth and affecting the flotation effect. Depending on the application and the thickness of the froth layer, the distance between the bottom surface of scraper 7 and the slurry surface can be adjusted between 5-20 mm. When the froth layer is thicker, the distance should be increased appropriately; when the froth layer is thinner, the distance should be decreased appropriately. The horizontal height of scraper 7 can be adjusted manually. For example, a connector (not shown in the figure) is provided above the middle of scraper 7. The connector has multiple positioning holes, and the bottom of connecting rod 305 has a threaded hole and a bolt that matches the threaded hole. When the bolt passes through the threaded hole and is inserted into the positioning hole, the position of scraper 7 is fixed. The positioning holes at different positions are used to adjust the height of scraper 7 with the bolt.

[0043] As one embodiment of the rotary table 6 in the above embodiments, the rotary table 6 includes a support base 601, a connecting shaft 602 is rotatably connected to the middle of the support base 601, the top of the connecting shaft 602 is fixedly connected to the bottom of the weighing sensor 4 through a support plate 603, a second synchronous gear 604 is provided on the connecting shaft 602, the second synchronous gear 604 is driven by a second synchronous belt 607 to a second drive gear 606, and the second drive gear 606 is driven to rotate by a second drive motor 605.

[0044] During use, when the receiving container 5 receives the scraped material, the second drive motor 605 starts and drives the connecting shaft 602, the support plate 603, and the receiving container 5 to slowly rotate around the center point of the support base 601 via the reducer, the second drive gear 606, the second synchronous belt 607, and the second synchronous gear 604. This prevents foam from becoming fixed at the landing point of the receiving container 5 and accumulating locally, which would affect the weighing accuracy. The slow, slight rotation disperses the landing point and improves measurement stability. The support base 601 and the connecting shaft 602 are rotatably connected by bearings. A level can be installed on the support plate 603 to check the levelness of the support plate 603 and the top receiving container 5.

[0045] The load cell 4 is connected to the center of the receiving container 5 and the support plate 603. Limiting elements 8 are provided at the edges of the receiving container 5 and the support plate 603, such as... Figure 6 As shown, the limiting component 8 includes a sleeve 801 and a docking post 802, which are movably connected to each other to maintain the stability of the ore receiving container 5 when it rotates.

[0046] As an improvement to the above embodiments, such as Figure 7 Multiple weighing sensors 4 are located at the edge of the support plate 603. Multiple ore receiving containers 5 are respectively positioned on top of the weighing sensors 4, with equal included angles between adjacent containers 5. Driven by the second drive motor 605, the multiple ore receiving containers 5 are sequentially aligned with the foam guide plate 201. The bottom end of the foam guide plate 201 can be designed as a bucket-shaped structure (not shown in the figure), allowing the scraped material to be sequentially guided into the multiple ore receiving containers 5 for collection. When there is too much scraped material from a single container, the second drive motor 605 drives the support plate 603 to rotate, aligning the empty ore receiving container 5 with the bottom end of the foam guide plate 201, preventing overflow due to excessive collection in a single container 5. Furthermore, this method allows for multiple parallel scraping operations using multiple ore receiving containers 5 under the same conditions, with the average value taken, improving the reproducibility of the experiment.

[0047] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0048] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. An automatic weighing device for skimming foam in a laboratory flotation machine, comprising a housing (1), characterized in that, The box (1) is provided with a flotation cell (2), a weighing sensor (4) and a receiving container (5) on one side. A rotating assembly (3) is provided above the flotation cell (2). A scraper (7) for scraping out foam is provided at the output end of the rotating assembly (3). The receiving container (5) is used to receive foam. The weighing sensor (4) weighs the foam. A water supply pipe is provided on the flotation cell (2) for replenishing water into the flotation cell (2).

2. The automatic weighing device for skimming foam in a laboratory flotation machine according to claim 1, characterized in that, A foam guide plate (201) is provided on one side of the top of the flotation cell (2) as a foam outlet.

3. The automatic weighing device for skimming foam in a laboratory flotation machine according to claim 2, characterized in that, The rotating assembly (3) includes a first drive motor (301), a first drive gear (302), a first synchronous gear (303), a first synchronous belt (304), and a connecting rod (305). The first synchronous belt (304) is used for synchronous transmission of the first drive gear (302) and the first synchronous gear (303). The bottom end of the connecting rod (305) is connected to the scraper (7).

4. The automatic weighing device for skimming foam in a laboratory flotation machine according to claim 3, characterized in that, A rotating platform (6) is provided below the weighing sensor (4). The rotating platform (6) is used to drive the weighing sensor (4) and the ore receiving container (5) to rotate, so that the foam is dispersed and falls onto the ore receiving container (5).

5. The automatic weighing device for skimming foam in a laboratory flotation machine according to claim 4, characterized in that, The rotary table (6) includes a support base (601), a connecting shaft (602) and a support plate (603); a second synchronous gear (604) is provided on the connecting shaft (602), and the second synchronous gear (604) is connected to a second drive gear (606) through a second synchronous belt (607). The second drive gear (606) is driven to rotate by a second drive motor (605).

6. The automatic weighing device for skimming foam in a laboratory flotation machine according to claim 5, characterized in that, The weighing sensor (4) is located at the center of the receiving container (5) and the support plate (603), and the edge of the receiving container (5) and the support plate (603) is provided with a limiting member (8) to maintain the stability of the receiving container (5).

7. The automatic weighing device for skimming foam in a laboratory flotation machine according to claim 5, characterized in that, The weighing sensors (4) are provided in multiple locations and are all located on the edge of the support plate (603). The top of each weighing sensor (4) is provided with a multiple ore receiving container (5) for individually receiving the falling foam.

8. The automatic weighing device for skimming foam in a laboratory flotation machine according to claim 7, characterized in that, The bottom of the foam guide plate (201) is a bucket-shaped structure, which is used to concentrate the foam and fall into the ore receiving container (5).

9. An automatic weighing device for skimming foam in a laboratory flotation machine according to claim 6 or 8, characterized in that, The height of the scraper (7) is adjustable. A plug-in post is provided above the middle part of the scraper (7). The plug-in post is provided with multiple positioning holes. The bottom of the connecting rod (305) is provided with a threaded hole and a bolt that matches the threaded hole. After the bolt passes through the threaded hole, it is inserted into the positioning hole to fix the position of the scraper (7) and adjust the horizontal height of the scraper (7).

10. An automatic weighing device for skimming foam in a laboratory flotation machine according to claim 9, characterized in that, A level is provided on the support plate (603), which is used to check the level of the support plate (603) and the ore receiving container (5).

Images