Material measuring device of rare earth waste recovery oxide extraction equipment and use method of material measuring device

Abstract

The invention discloses a material measuring device of rare earth waste recovery oxide extraction equipment, which comprises a material storage barrel, a material pressing mechanism is arranged in the material storage barrel, a material discharging mechanism is arranged at the bottom end of the material storage barrel, a material measuring mechanism is arranged at the top end of the material storage barrel, and the material measuring mechanism comprises a plurality of fixed pipes. The multiple fixing pipes are divided into two groups and oppositely arranged on the top side of the material storage barrel, and each fixing pipe fixedly penetrates through the barrel wall of the material storage barrel. When the improved material measuring device is used, the material pressing device compresses air in the material storage barrel along with the increase of raw materials in the material storage barrel, so that the raw materials are automatically compacted through the counter-acting force of the compressed air, and meanwhile, the piston rods can be sequentially pushed out of the fixed pipe along with the increase of the air pressure in the material storage barrel; an operator can determine the amount of the raw materials in the material storage barrel according to the amount of the extending piston rod, the accuracy of the material measuring device is not influenced by the sight of the operator, and the material measuring accuracy is high.

Description

Technical Field

[0001] The present invention relates to the technical field of metering devices for rare earth waste extraction equipment, and particularly to a metering device for rare earth waste recycling oxide extraction equipment and its usage method. Background Art

[0002] Recycling rare earth waste into oxide extraction is a method for extracting and recovering rare earth oxides from rare earth waste. Rare earth waste usually comes from the waste generated during the mining, smelting of rare earth ores, and the production of rare earth products. These wastes contain a certain amount of rare earth elements, but due to their low concentration, it is difficult to directly utilize them. Therefore, it is necessary to extract the rare earth elements through certain technical means to achieve the reuse of resources.

[0003] For example, a metering device for a rare earth waste recycling oxide extraction equipment with the publication number CN113249569B belongs to the technical field of rare earth processing, including a material storage cylinder, a feed pipe, a driving motor, a blanking turntable, an impact mechanism, and an impact block. The feed pipe is embedded at the top of the material storage cylinder, the driving motor is fixedly connected to the top of the material storage cylinder, and the blanking turntable is rotatably connected inside the material storage cylinder below the driving motor, and the blanking turntable is in transmission connection with the power output end of the driving motor. This metering device for rare earth waste recycling oxide extraction equipment is provided with an impact mechanism. By accumulating force during blanking, the impact mechanism has a high kinetic energy to impact the material storage cylinder, and the material storage cylinder uses the resonance of the impact to reduce the accumulation gap between the wastes inside it, greatly improving people's grasp of metering accuracy.

[0004] In the above patent, the vibration of the device is used to reduce the gap between raw materials, thereby improving metering accuracy. However, when the raw materials in the material storage cylinder are discharged, some liquid raw materials or powder raw materials may adhere to the inner wall of the material storage cylinder, thereby affecting metering accuracy. And the amount of raw materials in the material storage cylinder is determined by a scale. Due to the need for the operator to observe, affected by the operator's line of sight, scale deviation may occur, which further affects metering accuracy. Summary of the Invention

[0005] The purpose of the present invention is to provide a metering device for rare earth waste recycling oxide extraction equipment and its usage method, so as to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: a metering device for a rare earth waste recycling oxide extraction device, including a storage cylinder, a pressing mechanism is arranged in the storage cylinder, a discharging mechanism is arranged at the bottom end of the storage cylinder, a metering mechanism is arranged at the top end of the storage cylinder, the metering mechanism includes a plurality of fixed pipes, the plurality of fixed pipes are divided into two groups and are oppositely arranged on the top side of the storage cylinder, and each fixed pipe fixedly penetrates through the cylinder wall of the storage cylinder, the distance between two adjacent fixed pipes in each group is equal, a piston rod is arranged in the fixed pipe, and the outer peripheral wall of the piston rod is in contact with the inner wall of the fixed pipe.

[0007] Preferably, the pressing mechanism includes a push plate, the push plate is arranged in the storage cylinder, and the outer peripheral wall of the push plate is in contact with the inner wall of the storage cylinder. A first square ring groove is formed on the outer peripheral wall of the top of the push plate. A first sealing ring is slidably installed in the first square ring groove, and the outer peripheral wall of the first sealing ring is in contact with the inner wall of the storage cylinder. Air is filled between the top side of the push plate and the inner wall of the storage cylinder. A soft material conveying pipe is fixedly penetrated and installed at the central position of the push plate, and the feeding end of the soft material conveying pipe fixedly penetrates through the cylinder wall of the storage cylinder.

[0008] Preferably, two guide rods with a T-shaped cross-sectional shape are oppositely arranged on the outer peripheral side of the soft material conveying pipe, and the bottom end of each guide rod is fixedly connected to the push plate. The top of the guide rod slidably penetrates through the cylinder wall of the storage cylinder, and the two guide rods and the soft material conveying pipe are located between the two groups of fixed pipes. A first sealing ring is fixedly installed in the cylinder wall of the storage cylinder at the position corresponding to the guide rod, and the inner ring wall of the first sealing ring is in contact with the outer peripheral wall of the corresponding guide rod.

[0009] Preferably, a limiting ring is fixedly sleeved on the outer peripheral side of the bottom of the guide rod, and the limiting ring is in clearance fit with the push plate. The limiting ring is located in the storage cylinder.

[0010] Preferably, a second sealing ring is fixedly installed in the cylinder wall of the storage cylinder, and the inner ring wall of the second sealing ring is in contact with the outer peripheral wall of the corresponding piston rod. The piston rod is composed of a plurality of indicating rods and a piston plate. The plurality of indicating rods are arranged from top to bottom, and two adjacent indicating rods are fixedly connected. The piston plate is located at the bottom end of the corresponding indicating rod and is fixedly connected to the corresponding indicating rod. Air is filled between the top side of the piston plate and the inner wall of the fixed pipe.

[0011] Preferably, the discharging mechanism includes a baffle plate, the baffle plate is arranged at the bottom side of the storage cylinder, and the top side of the baffle plate is in contact with the bottom side of the storage cylinder. A second square ring groove is formed at the bottom side of the storage cylinder. A second sealing ring is fixedly installed in the second square ring groove, and the bottom side of the second sealing ring is in contact with the top side of the baffle plate. The outer peripheral side of the baffle plate is slidably sleeved with a storage shell, and the open end of the storage shell is fixedly connected to the outer wall of the storage cylinder.

[0012] Preferably, two limiting plates with a T-shaped cross-section are provided oppositely on both sides of the baffle, and the top end of each limiting plate is fixedly connected to the storage cylinder. Both sides of the baffle are inserted into the two limiting plates and are in contact with the inner walls of the limiting plates.

[0013] Preferably, a threaded rod is installed in the baffle in a threaded manner. A motor is fixedly installed on the outer wall of the storage shell at a position corresponding to the threaded rod, and the driving end of the motor is inserted into the storage shell and fixedly connected to the threaded rod.

[0014] The present invention has at least the following beneficial effects: 1. When the improved metering device is in use, as the raw materials in the storage cylinder increase, the pressing device compresses the air in the storage cylinder accordingly. Thus, the raw materials are automatically compacted by the reaction force of the compressed air. At the same time, as the air pressure in the storage cylinder rises, a number of piston rods can be sequentially pushed out of the fixed tube. The operator can determine the amount of raw materials in the storage cylinder according to the amount of the extended piston rods. The accuracy of the metering device is not affected by the operator's line of sight, and the metering accuracy is high. 2. After the storage of a specific amount of raw materials in the above-mentioned storage cylinder is completed, the discharging device releases the closed state of the opening at the bottom end of the storage cylinder. Due to the pushing of the gas in the storage cylinder on the push plate, the push plate in the storage cylinder can be automatically moved downward and reset. Thus, the raw materials on the inner wall of the storage cylinder can be scraped off and pushed out together with the raw materials in the storage cylinder. Subsequently, the discharging device restores the closed state of the opening at the bottom end of the storage cylinder again, and at the same time, the extremely small amount of raw materials remaining on the bottom side of the push plate can be scraped off. The raw materials measured by the device can be all injected into the rare earth waste recycling oxide extraction equipment, and the metering accuracy of the device will not be affected by the remaining raw materials on the inner wall of the storage cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic diagram of the whole of the present invention; Figure 2 It is a schematic diagram of the internal structure of the storage cylinder of the present invention; Figure 3 For the present invention Figure 2 The enlarged structural schematic diagram at A in; Figure 4 It is a schematic diagram of the whole structure of the push plate and the soft material conveying pipe of the present invention; Figure 5 It is a schematic diagram of the whole structure of a part of the storage cylinder and the fixed tube of the present invention; Figure 6Schematic diagram of the internal structure of the fixed tube of the present invention; Figure 7 Schematic diagram of the internal structure of the storage shell and the baffle of the present invention.

[0017] In the figure: 1, material storage cylinder; 2, material pressing mechanism; 21, push plate; 22, first square ring groove; 23, first sealing ring; 24, soft material conveying pipe; 25, guide rod; 26, first sealing ring; 27, limiting ring; 3, material measuring mechanism; 31, fixed tube; 32, second sealing ring; 33, piston rod; 331, indicating rod; 332, piston plate; 4, material discharging mechanism; 41, baffle; 42, second square ring groove; 43, second sealing ring; 44, storage shell; 45, limiting plate; 46, threaded rod; 47, motor. Specific embodiments

[0018] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] The present invention provides a technical solution: Refer to Figure 1-7 , a material measuring device for a rare earth waste recycling oxide extraction device disclosed by the present invention, includes a material storage cylinder 1, a material pressing mechanism 2 is arranged in the material storage cylinder 1, a material discharging mechanism 4 is arranged at the bottom end of the material storage cylinder 1, a material measuring mechanism 3 is arranged at the top end of the material storage cylinder 1, the material measuring mechanism 3 includes a plurality of fixed tubes 31, the plurality of fixed tubes 31 are divided into two groups and are oppositely arranged on the top side of the material storage cylinder 1, and each fixed tube 31 fixedly penetrates through the cylinder wall of the material storage cylinder 1, the distance between two adjacent fixed tubes 31 in each group is equal, a piston rod 33 is arranged in the fixed tube 31, and the outer peripheral wall of the piston rod 33 is in contact with the inner wall of the fixed tube 31.

[0020] In this embodiment, when the improved material measuring device is in use, as the raw materials in the material storage cylinder 1 increase, the material pressing device compresses the air in the material storage cylinder 1 accordingly, so as to automatically compact the raw materials by the reaction force of the compressed air. At the same time, as the air pressure in the material storage cylinder 1 increases, a plurality of piston rods 33 can be sequentially pushed out of the fixed tubes 31, and the operator determines the amount of raw materials in the material storage cylinder 1 according to the amount of the extended piston rods 33 until the amount of raw materials in the material storage cylinder 1 reaches the required amount. Then, the material discharging device releases the closed state of the opening at the bottom end of the material storage cylinder 1. Since the gas in the material storage cylinder 1 expands and resets, the raw materials on the inner wall of the material storage cylinder 1 can be scraped off by the material pressing mechanism 2 and pushed out together with the raw materials in the material storage cylinder 1, and then fall into the opening of the rare earth waste recycling oxide extraction device. Subsequently, the material discharging device restores the closed state of the opening at the bottom end of the material storage cylinder 1 again, and at the same time, the extremely small amount of raw materials remaining on the bottom side of the push plate 21 can be scraped off and fall into the opening of the rare earth waste recycling oxide extraction device.

[0021] In a further preferred embodiment of the present invention, as Figure 2 and Figure 3 shown, the blank holding mechanism 2 includes a push plate 21. The push plate 21 is arranged in the storage cylinder 1, and the outer peripheral wall of the push plate 21 is in contact with the inner wall of the storage cylinder 1. A first square ring groove 22 is formed on the outer peripheral wall of the top of the push plate 21. A first sealing ring 23 is slidably installed in the first square ring groove 22, and the outer peripheral wall of the first sealing ring 23 is in contact with the inner wall of the storage cylinder 1. Air is filled between the top side of the push plate 21 and the inner wall of the storage cylinder 1. A soft material conveying pipe 24 is fixedly installed through the center position of the push plate 21, and the feeding end of the soft material conveying pipe 24 fixedly penetrates the barrel wall of the storage cylinder 1; In this embodiment, the setting of the first sealing ring 23 can block the gap between the outer side of the push plate 21 and the inner wall of the storage cylinder 1, so that the air in the storage cylinder 1 can be compressed when the push plate 21 moves upward; When the improved metering device is in use, the raw material conveying device injects the rare earth waste raw materials into the soft material conveying pipe 24, and then the soft material conveying pipe 24 guides the raw materials to the lower part of the push plate 21. As the raw materials are input into the storage cylinder 1, the pressure between the push plate 21 and the baffle 41 gradually increases, thereby pushing the push plate 21 to move upward to compress the gas above the baffle 41, so that the air pressure in the storage cylinder 1 gradually increases; During the process of the push plate 21 moving upward to compress the gas in the storage cylinder 1, the compressed gas can synchronously exert a thrust on the push plate 21, so that the push plate 21 exerts a pressure on the raw materials, thereby compacting the raw materials in the storage cylinder 1, so that the amount of raw materials stored in a specific space in the storage cylinder 1 is basically the same; It should be noted that the feeding end of the soft material conveying pipe 24 is connected to the discharging end of the raw material conveying device through a connecting pipe.

[0022] In a further preferred embodiment of the present invention, as Figure 2 and Figure 3 shown, two guide rods 25 with a T-shaped cross-section are oppositely arranged on the outer peripheral side of the soft material conveying pipe 24, and the bottom end of each guide rod 25 is fixedly connected to the push plate 21. The top of the guide rod 25 slidably penetrates the barrel wall of the storage cylinder 1, and the two guide rods 25 and the soft material conveying pipe 24 are located between two groups of fixed pipes 31. First sealing rings 26 are fixedly installed at the positions corresponding to the guide rods 25 in the barrel wall of the storage cylinder 1, and the inner ring wall of the first sealing ring 26 is in contact with the outer peripheral wall of the corresponding guide rod 25; In this embodiment, when the push plate 21 moves downward, it can drive the guide rod 25 to gradually insert into the storage cylinder 1 until the guide rod 25 abuts against the storage cylinder 1. At this time, the bottom side of the push plate 21 is coplanar with the bottom side of the storage cylinder 1, preventing the push plate 21 from sliding out of the storage cylinder 1.

[0023] In a further preferred embodiment of the present invention, as Figure 2As shown, a limiting ring 27 is fixedly sleeved on the outer peripheral side of the bottom of the guide rod 25, and the limiting ring 27 is in clearance fit with the push plate 21. The limiting ring 27 is located inside the storage cylinder 1; In this embodiment, when the limiting plate 45 moves upward, the guide rod 25 inside the storage cylinder 1 can be pushed out of the storage cylinder 1 again until the limiting ring 27 abuts against the inner wall of the storage cylinder 1, so that there is always a specific space between the push plate 21 and the inner wall of the storage cylinder 1 for storing the bent and deformed soft material conveying pipe 24.

[0024] In a further preferred embodiment of the present invention, as Figure 5 and Figure 6 shown, a second sealing ring 32 is fixedly installed in the cylinder wall of the storage cylinder 1, and the inner ring wall of the second sealing ring 32 is in contact with the outer peripheral wall of the corresponding piston rod 33. The piston rod 33 is composed of a plurality of indicating rods 331 and a piston plate 332. The plurality of indicating rods 331 are arranged from top to bottom, and two adjacent indicating rods 331 are fixedly connected. The piston plate 332 is located at the bottom end of the corresponding indicating rod 331 and is fixedly connected to the corresponding indicating rod 331. Air is filled between the top side of the piston plate 332 and the inner wall of the fixed pipe 31; In this embodiment, as the air pressure in the storage cylinder 1 increases, the pressure in the bottom opening of the fixed pipe 31 will increase accordingly, so that the pressure on the bottom side of the piston plate 332 gradually becomes higher than the air pressure in the fixed pipe 31, thereby pushing the piston plate 332 upward until the piston plate 332 abuts against the inner wall of the fixed pipe 31. When the piston plate 332 abuts against the inner wall of the fixed pipe 31, a specific number of indicating rods 331 are pushed out of the fixed pipe 31. Finally, as the air pressure in the discharge cylinder gradually increases, the indicating rods 331 can be sequentially pushed out of the fixed pipe 31. The operator can determine the amount of raw materials in the storage cylinder 1 according to the number of indicating rods 331 on the top side of the storage cylinder; It should be noted that the plurality of indicating rods 331 constituting each piston rod 33 are all set in different colors, which facilitates the operator to quickly determine the length of the piston rod 33 extending out of the storage cylinder 1; the air pressures in the plurality of fixed pipes 31 are set to be different, so that the indicating rods 331 are sequentially pushed out of the fixed pipes 31 during the process of the increase of the gas in the storage cylinder 1.

[0025] In a further preferred embodiment of the present invention, as Figure 2 and Figure 3 shown, the discharging mechanism 4 includes a baffle 41. The baffle 41 is arranged at the bottom side of the storage cylinder 1, and the top side of the baffle 41 is in contact with the bottom side of the storage cylinder 1. A second square ring groove 42 is formed in the bottom side of the storage cylinder 1. A second sealing ring 43 is fixedly installed in the second square ring groove 42. The bottom side of the second sealing ring 43 is in contact with the top side of the baffle 41. A storage shell 44 is slidably sleeved on the outer peripheral side of the baffle 41, and the open end of the storage shell 44 is fixedly connected to the outer wall of the storage cylinder 1; In this embodiment, the second sealing ring 43 can block the gap between the baffle 41 and the bottom side of the storage barrel 1 and the bracket of the baffle 41, so that the baffle 41 can close the bottom opening of the storage barrel 1, thereby avoiding the outflow of the raw materials in the storage barrel 1.

[0026] In a further preferred embodiment of the present invention, as Figure 1 and Figure 5 shown, two limiting plates 45 with a T-shaped cross-section are oppositely arranged on both sides of the baffle 41, and the top end of each limiting plate 45 is fixedly connected to the storage barrel 1. Both sides of the baffle 41 are inserted into the two limiting plates 45 and are in contact with the inner wall of the limiting plate 45; In this embodiment, the arrangement of the limiting plates 45 can restrict and position the baffle 41 from both sides of the baffle 41, so that the baffle 41 can stably maintain a straight state and closely fit with the bottom side of the storage barrel 1, thereby making the sealing strength of the baffle 41 for the bottom opening of the storage barrel 1 relatively stable.

[0027] In a further preferred embodiment of the present invention, as Figure 5 shown, a threaded rod 46 is internally threaded in the baffle 41. A motor 47 is fixedly installed on the outer wall of the storage shell 44 at a position corresponding to the threaded rod 46, and the driving end of the motor 47 is inserted into the storage shell 44 and fixedly connected to the threaded rod 46; In this embodiment, after the required amount of raw materials in the storage barrel 1 is measured, the motor 47 is started to drive the threaded rod 46 to rotate, and the baffle 41 is quickly pulled into the storage shell 44, thereby gradually releasing the closed state of the bottom opening of the storage barrel 1. At this time, due to the action of the self-gravity of the raw materials and the pushing of the raw materials by the push plate 21, the raw materials in the storage barrel 1 can be directly pushed out of the storage barrel 1 from the bottom opening of the storage barrel 1, and then fall into the feed port of the rare earth waste recycling oxide extraction equipment; After the raw materials in the storage barrel 1 are discharged, the motor 47 drives the threaded rod 46 to rotate in the reverse direction, and gradually pushes the baffle 41 out of the housing until the push plate 21 covers and blocks the opening of the storage barrel. During the movement of the push plate 21, the push plate 21 slides along the bottom side of the push plate 21 and the inner wall of the limiting plate 45, and can scrape off a very small amount of raw materials remaining on the bottom side of the push plate 21 and the inner wall of the limiting plate 45, and push the raw materials into the feed port of the rare earth waste recycling oxide extraction equipment.

[0028] According to the above, a method for using a metering device is obtained, including the metering device of the rare earth waste recycling oxide extraction equipment described above, specifically including the following steps: Step 1: First, inject the raw materials into the storage barrel 1 through the soft material conveying pipe 24, and determine the injection amount of the raw materials in the storage barrel 1 according to the amount of the indicating rod 331 protruding from the top side of the storage barrel 1, so as to inject a specific amount of raw materials into the storage barrel 1; Step 2: Then the motor 47 drives the threaded rod 46 to rotate, and pulls the baffle plate 41 into the storage shell 44 to release the closed state of the bottom opening of the storage barrel 1. Due to the push of the push plate 21 by the gas in the storage barrel 1, the push plate 21 scrapes the raw materials on the inner wall of the storage barrel 1, and pushes the raw materials in the storage barrel 1 out of the bottom opening of the storage barrel 1 and falls into the feed port of the rare earth waste recovery oxide extraction equipment; Step three: Then the motor 47 drives the threaded rod 46 to rotate in the opposite direction, pushing the baffle 41 to reset and re-seal the opening at the bottom end of the storage barrel 1, and scrapes off the very small amount of raw material remaining on the bottom side of the baffle 41 and the inner wall of the limit plate 45, and then into the feed port of the rare earth waste recovery oxide extraction equipment, and then according to the above repeated operations, the required amount of raw material can be continuously injected into the rare earth waste recovery oxide extraction equipment.

[0029] Working principle: When installing the improved metering device, the operator fixes the storage barrel 1 in the feed port of the rare earth waste recovery oxide extraction equipment, and then connects the feed end of the soft feed pipe 24 to the discharge end of the raw material conveying device through the connecting pipe, and the installation of the device is completed; When the improved metering device is in use, the raw material conveying device injects the rare earth waste raw material into the soft material conveying pipe 24, and then the soft material conveying pipe 24 guides the raw material to the bottom of the push plate 21. As the raw material is input into the storage barrel 1, the pressure between the push plate 21 and the baffle 41 gradually increases, thereby pushing the push plate 21 to move upward to compress the gas above the baffle 41, so that the gas pressure in the storage barrel 1 gradually increases; As the air pressure in the material storage barrel 1 increases, the pressure in the bottom opening of the fixed tube 31 increases accordingly, so that the pressure on the bottom side of the piston plate 332 gradually becomes higher than the air pressure in the fixed tube 31, thereby pushing the piston plate 332 upward until the piston plate 332 and the inner wall of the fixed tube 31 collide with each other, and when the piston plate 332 and the inner wall of the fixed tube 31 collide with each other, a specific number of indicator rods 331 are pushed out of the fixed tube 31, and finally, as the air pressure in the discharge barrel gradually increases, the indicator rods 331 can be pushed out of the fixed tube 31 one by one, and the operator can determine the amount of raw materials in the material storage barrel 1 according to the number of indicator rods 331 on the top side of the storage barrel; In the process of the push plate 21 moving upward to compress the gas in the storage barrel 1, the compressed gas can simultaneously exert a thrust on the push plate 21, thereby compacting the raw material between the push plate 21 and the baffle 41, so that the amount of raw material stored in the specific space in the storage barrel 1 is the same; A specific amount of raw materials can be injected into the storage cylinder 1 as needed. Subsequently, the motor 47 is activated to drive the threaded rod 46 to rotate, quickly pulling the baffle 41 into the storage shell 44, thereby gradually releasing the closed state of the bottom opening of the storage cylinder 1. At this time, due to the gravity of the raw materials themselves and the pushing of the push plate 21 on the raw materials, the raw materials in the storage cylinder 1 can be directly pushed out of the storage cylinder 1 from the bottom opening of the storage cylinder 1 and then fall into the feed inlet of the rare earth waste recycling oxide extraction equipment; It should be noted that during the movement of the above-mentioned push plate 21, the push plate 21 slides along the inner wall of the storage cylinder 1, scraping off the raw materials attached to the inner wall of the storage cylinder 1 and pushing them out together from the bottom opening of the storage cylinder 1; After the push plate 21 pushes out the raw materials in the storage cylinder 1, due to the mutual resistance between the limit ring 27 and the storage cylinder 1 and the pulling of the guide rod 25 on the push plate 21, the push plate 21 will not slide out of the storage cylinder 1. And at this time, the bottom side of the push plate 21 is coplanar with the bottom side of the storage cylinder 1. Subsequently, the motor 47 drives the threaded rod 46 to rotate in the reverse direction, gradually pushing the baffle 41 out of the housing until the push plate 21 covers the opening of the storage cylinder. And at this time, the second sealing ring 43 is in close contact with the baffle 41 to block the gap between the baffle 41 and the bottom end of the storage cylinder 1, thereby restoring the closed state of the bottom opening of the storage cylinder 1; It should be noted that during the movement of the above-mentioned push plate 21, the push plate 21 slides along the bottom side of the push plate 21 and the inner wall of the limit plate 45, scraping off a small amount of raw materials remaining on the bottom side of the push plate 21 and the inner wall of the limit plate 45 and pushing the raw materials into the feed inlet of the rare earth waste recycling oxide extraction equipment. At the same time, due to the mutual resistance between the push plate 21 and the inner wall of the limit plate 45, the push plate 21 always remains stable and straight, so that the sealing of the bottom opening of the storage cylinder 1 by the push plate 21 is stable. According to the above repeated operations, a specific amount of raw materials can be continuously put into the feed inlet of the rare earth waste recycling oxide extraction equipment.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above-mentioned embodiments. What is described in the above-mentioned embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A material measuring device for a rare earth waste recycling oxide extraction device, including a storage barrel (1), characterized in that: A pressing mechanism (2) is provided inside the storage cylinder (1). A discharging mechanism (4) is provided at the bottom end of the storage cylinder (1). A material measuring mechanism (3) is provided at the top end of the storage cylinder (1). The material measuring mechanism (3) includes a plurality of fixed pipes (31). The plurality of fixed pipes (31) are divided into two groups and are oppositely arranged on the top side of the storage cylinder (1). Each fixed pipe (31) fixedly penetrates through the cylinder wall of the storage cylinder (1). The distance between two adjacent fixed pipes (31) in each group is equal. A piston rod (33) is provided inside the fixed pipe (31), and the outer peripheral wall of the piston rod (33) is in contact with the inner wall of the fixed pipe (31).

2. The metering device of the rare earth waste recycling oxide extraction equipment according to claim 1, characterized in that: The pressing mechanism (2) includes a push plate (21). The push plate (21) is arranged inside the storage cylinder (1), and the outer peripheral wall of the push plate (21) is in contact with the inner wall of the storage cylinder (1). A first square ring groove (22) is formed in the outer peripheral wall at the top of the push plate (21). A first sealing ring (23) is slidably installed in the first square ring groove (22), and the outer peripheral wall of the first sealing ring (23) is in contact with the inner wall of the storage cylinder (1). Air is filled between the top side of the push plate (21) and the inner wall of the storage cylinder (1). A flexible material conveying pipe (24) is fixedly penetrated and installed at the central position of the push plate (21), and the feeding end of the flexible material conveying pipe (24) fixedly penetrates through the cylinder wall of the storage cylinder (1).

3. The metering device of the rare earth waste recycling oxide extraction equipment according to claim 2, characterized in that: Two guide rods (25) with a T-shaped cross-section are oppositely arranged on the outer peripheral side of the flexible material conveying pipe (24). The bottom end of each guide rod (25) is fixedly connected to the push plate (21). The top of the guide rod (25) slidably penetrates through the cylinder wall of the storage cylinder (1). The two guide rods (25) and the flexible material conveying pipe (24) are located between the two groups of fixed pipes (31). A first sealing ring (26) is fixedly installed at a position corresponding to the guide rod (25) in the cylinder wall of the storage cylinder (1), and the inner ring wall of the first sealing ring (26) is in contact with the outer peripheral wall of the corresponding guide rod (25).

4. The metering device of the rare earth waste recycling oxide extraction equipment according to claim 3, characterized in that: A limiting ring (27) is fixedly sleeved on the outer peripheral side of the bottom of the guide rod (25), and the limiting ring (27) is in clearance fit with the push plate (21). The limiting ring (27) is located inside the storage cylinder (1).

5. The dosing device of the rare earth waste recycling oxide extraction equipment according to claim 4, characterized in that: A second sealing ring (32) is fixedly installed in the cylinder wall of the storage cylinder (1), and the inner ring wall of the second sealing ring (32) is in contact with the outer peripheral wall of the corresponding piston rod (33). The piston rod (33) is composed of a plurality of indicating rods (331) and a piston plate (332). The plurality of indicating rods (331) are arranged from top to bottom, and two adjacent indicating rods (331) are fixedly connected. The piston plate (332) is located at the bottom end of the corresponding indicating rod (331) and is fixedly connected to the corresponding indicating rod (331). Air is filled between the top side of the piston plate (332) and the inner wall of the fixed pipe (31).

6. The metering device of the rare earth waste recycling oxide extraction equipment according to claim 5, characterized in that: The material discharging mechanism (4) comprises a baffle (41), the baffle (41) being arranged on the bottom side of the material storage barrel (1), and the top side of the baffle (41) being in contact with the bottom side of the material storage barrel (1), the bottom side of the material storage barrel (1) being provided with a second square ring groove (42), a second sealing ring (43) being fixedly mounted in the second square ring groove (42), the bottom side of the second sealing ring (43) being in contact with the top side of the baffle (41), a storage shell (44) being slidably sleeved on the outer peripheral side of the baffle (41), and the open end of the storage shell (44) being fixedly connected to the outer wall of the material storage barrel (1).

7. The metering device of the rare earth waste recycling oxide extraction equipment according to claim 6, characterized in that: Two limiting plates (45) with a T-shaped cross section are arranged opposite to each other on both sides of the baffle (41), and the top end of each limiting plate (45) is fixedly connected to the storage barrel (1). The two sides of the baffle (41) are respectively inserted into the two limiting plates (45) and contact the inner walls of the limiting plates (45).

8. The metering device of the rare earth waste recycling oxide extraction equipment according to claim 7, characterized in that: A threaded rod (46) is installed in the internal thread of the baffle (41), and a motor (47) is fixedly installed on the outer wall of the storage shell (44) at a position corresponding to the threaded rod (46), and a driving end of the motor (47) is inserted into the storage shell (44) and fixedly connected to the threaded rod (46).

9. A method for using a metering device, including the metering device of the rare earth waste recycling oxide extraction equipment according to any one of claims 1-8, characterized in that, The specific steps include: Step 1: First, the raw material is injected into the storage barrel (1) through the soft material delivery pipe (24), and the injection amount of the raw material in the storage barrel (1) is determined according to the amount of the indicator rod (331) extending from the top side of the storage barrel (1), so that a specific amount of raw material can be injected into the storage barrel (1); Step 2: Then the motor (47) drives the threaded rod (46) to rotate, pulling the baffle plate (41) into the storage shell (44) to release the closed state of the bottom opening of the storage barrel (1). Due to the push of the push plate (21) by the gas in the storage barrel (1), the push plate (21) scrapes the raw materials on the inner wall of the storage barrel (1), and pushes the raw materials in the storage barrel (1) out of the bottom opening of the storage barrel (1) and falls into the feed port of the rare earth waste recovery oxide extraction equipment; Step 3: The motor (47) then drives the threaded rod (46) to rotate in the opposite direction, pushing the baffle (41) to reset and reseal the opening at the bottom of the storage barrel (1), and scraping off the very small amount of raw material remaining on the bottom side of the baffle (41) and the inner wall of the limit plate (45), and injecting it into the feed port of the rare earth waste recovery oxide extraction equipment. Then, according to the above repeated operations, the required amount of raw material can be continuously injected into the rare earth waste recovery oxide extraction equipment.

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