Classification type energy-saving jet mill and superfine grinding method for ore

Abstract

The invention relates to the technical field of staged energy-saving jet mills, and discloses a staged energy-saving jet mill and an ultrafine crushing method for ores, the staged energy-saving jet mill comprises a mounting rack, a feeding bin is mounted in the mounting rack, the bottom of the feeding bin is connected with a material conveying pipe, an air inlet mechanism is mounted in the mounting rack, and the air inlet mechanism is connected with an air outlet of the feeding bin; the outer portion of the air inlet mechanism is connected with an upper air inlet pipe, the outer portion of the air inlet mechanism is connected with a lower air inlet pipe, and the other end of the lower air inlet pipe is connected with an airflow jet mechanism. In the crushing process, the discharging control mechanism can input crushed powder into the collecting bin at a fixed speed, and when the mass of the powder in the discharging control mechanism is increased, the speed of ore raw materials entering the airflow crushing bin can be controlled, so that the balance of the total amount of the ore raw materials in the airflow crushing bin is guaranteed; and when the total amount of the ore raw materials in the airflow crushing bin is kept balanced, the airflow injection mechanism can perform efficient and high-quality crushing on the ore raw materials.

Description

Technical Field

[0001] The present invention relates to the technical field of classified energy-saving air classifiers, and particularly to a classified energy-saving air classifier and a method for ultra-fine pulverization of ores. Background Art

[0002] Air pulverization equipment is a mechanical device that utilizes the kinetic energy of high-speed airflows to generate strong collisions, frictions, and shear actions among particles, thereby achieving ultra-fine pulverization or fine classification of solid materials.

[0003] Chinese Patent CN118437480B discloses an air pulverization and classification device, including a frame, an upper cover, a lower cover, an intermediate plate, and an elastic member; the lower cover is fixed to the frame, the upper cover is closely attached to the lower cover to form an internal chamber, a feed pipe and a discharge pipe are provided at the top of the upper cover, and an air inlet pipe is provided at the bottom of the lower cover; the intermediate plate is disposed in the internal chamber and is connected to the upper cover through an elastic member, dividing the internal chamber into a pulverization chamber in the upper part and a gas chamber in the lower part. The gas in the gas chamber enters the pulverization chamber through a gas flow channel provided around the intermediate plate to pulverize the material.

[0004] In the above patent and the prior art, the air pulverization equipment usually adds ore raw materials into the pulverization chamber at a fixed speed, while the sizes of the ore raw materials are often uneven, and the uneven ore raw materials require different pulverization times, resulting in an uncontrollable total amount of ore raw materials in the pulverization chamber, which not only affects the pulverization effect but also affects the pulverization efficiency and causes waste of resources. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a classified energy-saving air classifier and a method for ultra-fine pulverization of ores.

[0006] A classified energy-saving air classifier includes a mounting frame, an inlet bin is installed inside the mounting frame, a feeding pipe is connected to the bottom of the inlet bin, an air intake mechanism is installed inside the mounting frame, an upper air inlet pipe is connected to the outside of the air intake mechanism, a lower air inlet pipe is connected to the outside of the air intake mechanism, the other end of the lower air inlet pipe is connected to an air flow injection mechanism, an air flow pulverization chamber is installed inside the air flow injection mechanism, a blanking control mechanism is connected to the top of the air flow pulverization chamber, a discharge pipe is connected to the outside of the blanking control mechanism, the other end of the discharge pipe is connected to a collection bin, an air flow pipe is connected to the outside of the collection bin, and the other end of the air flow pipe is connected to an air extraction pump; The air intake mechanism is internally communicated with the air flow injection mechanism through the lower air inlet pipe, the air intake mechanism is internally communicated with the air flow pulverization chamber through the upper air inlet pipe, the inside of the inlet bin is internally communicated with the inside of the blanking control mechanism through the feeding pipe, and the inside of the blanking control mechanism is internally communicated with the inside of the air flow pulverization chamber through the upper air inlet pipe; The ore raw materials inside the feeding bin can enter the inside of the blanking control mechanism through the material conveying pipe. The air intake mechanism can drive the ore raw materials inside the blanking control mechanism into the air flow pulverizing bin through the upper air inlet pipe. The air intake mechanism can fill the air into the air flow injection mechanism through the lower air inlet pipe. The air flow injection mechanism can pulverize the ore raw materials inside the air flow pulverizing bin. The pulverized ore inside the air flow pulverizing bin can enter the collection bin through the blanking control mechanism and the discharge pipeline.

[0007] Preferably, the air flow injection mechanism includes an air flow injection chamber, which is installed outside the air flow pulverizing bin. A plurality of air flow injection pipes are installed inside the air flow injection chamber. An air flow communication groove is formed inside the air flow injection pipe. A communication partition plate is slidably installed inside the air flow injection pipe. A connecting telescopic rod is connected to the outside of the communication partition plate. A partition plate mounting seat is installed inside the air flow injection pipe. A partition plate spring is installed outside the partition plate mounting seat.

[0008] Preferably, a plurality of the air flow injection pipes are communicated with the lower air inlet pipe through the air flow injection chamber. A plurality of protrusions are arranged on the outside of the communication partition plate. The protrusions on the outside of the communication partition plate are slidably installed inside the air flow communication groove. The inside of the air flow injection pipe is partitioned by the communication partition plate; The air intake mechanism can inject air into the inside of the air flow injection pipe through the lower air inlet pipe. The air flow inside the air flow injection pipe can enter the inside of the air flow pulverizing bin through a plurality of air flow injection pipes.

[0009] Preferably, the outside of the communication partition plate is connected to the outside of the partition plate mounting seat through a connecting telescopic rod and a partition plate spring. The length of the protrusion on the outside of the communication partition plate is less than the depth of the air flow communication groove. Both sides of the communication partition plate can be communicated through the air flow communication groove; When the outside of the communication partition plate fits with both ends of the air flow communication groove, the communication partition plate can partition the inside of the air flow injection pipe. When the communication partition plate is located in the middle part of the air flow communication groove, the air flow can pass through the inside of the air flow communication groove.

[0010] Preferably, the air flow pulverizing bin includes an ore pulverizing bin, which is fixedly installed inside the air flow injection chamber. A lower limiting ring is installed inside the ore pulverizing bin. An air flow blade is installed at the top inside the ore pulverizing bin. The bottom of the air flow blade is connected to a pulverizing limiting ring. The outside of the pulverizing limiting ring is connected to an upper limiting ring. A discharge pipe is installed at the top of the ore pulverizing bin.

[0011] Preferably, the connection between the discharge pipe and the ore crushing bin is at the center of the top of the ore crushing bin, the connection between the upper air inlet pipe and the ore crushing bin is at the edge of the top of the ore crushing bin, and the air inlet mechanism is communicated with the inside of the ore crushing bin through the upper air inlet pipe; When the air inlet mechanism injects air into the inside of the ore crushing bin through the upper air inlet pipe, it can drive the ore raw materials inside the blanking control mechanism into the inside of the ore crushing bin, and when the upper air inlet pipe injects air into the inside of the ore crushing bin, it can drive the air flow blades to rotate inside the ore crushing bin.

[0012] Preferably, a plurality of openings are provided on the outer parts of the upper limiting ring and the lower limiting ring. The upper limiting ring is rotatably installed inside the ore crushing bin through the crushing limiting ring and the air flow blades. The crushing limiting ring is a conical structure, and a channel is provided inside the crushing limiting ring and communicated with the discharge pipe. The crushing limiting ring and the upper limiting ring separate the inside of the ore crushing bin; When the air flow blades drive the crushing limiting ring to rotate inside the ore crushing bin, the upper limiting ring can rotate on the top of the lower limiting ring. When the upper limiting ring rotates on the top of the lower limiting ring, it can control the ore raw materials on the upper limiting ring to evenly fall below the lower limiting ring, and the crushing limiting ring can guide the crushed ore into the inside of the discharge pipe.

[0013] Preferably, the blanking control mechanism includes a feed pipe. The feed pipe is connected to the top of the discharge pipe. The top of the feed pipe is connected with a connection bin. A transfer bin is installed inside the connection bin. A powder filter screen is installed inside the transfer bin. A top connection column is installed on the top of the transfer bin. A transmission connection plate is installed on the top of the top connection column. The outside of the transmission connection plate is connected with a limiting cylinder. An air flow connection cylinder is installed inside the limiting cylinder. The outside of the air flow connection cylinder is connected with a feed bin. The bottom of the air flow connection cylinder is connected with the upper air inlet pipe; A plurality of openings are provided inside both the limiting cylinder and the air flow connection cylinder, and the openings on the limiting cylinder and the air flow connection cylinder are staggered from each other.

[0014] Preferably, the bottom of the transfer bin is a conical structure, the top of the transfer bin is a circular structure, the inside of the transfer bin is separated by a powder filter screen, one end of the discharge pipeline passes through the connection bin and is communicated with the inside of the transfer bin, the top of the top connection column is connected with the limiting cylinder through the transmission connection plate, and the powder filter screen can control the falling speed of the ore powder; The ore powder inside the ore crushing bin can enter the transfer bin inside the connection bin through the feed pipe. The ore powder inside the transfer bin passes through the powder filter screen and then enters the collection bin through the discharge pipe. The change in the mass of the ore powder above the powder filter screen can drive the transfer bin to move up and down inside the connection bin. When the transfer bin moves up and down, it can drive the limit cylinder to move up and down through the top connecting column and the transmission connecting plate.

[0015] A method for ultra-fine crushing of ore uses the above-mentioned classification type energy-saving air classifier mill.

[0016] Compared with the prior art, the present invention provides a classification type energy-saving air classifier mill and a method for ultra-fine crushing of ore, and has the following beneficial effects: 1. For this classification type energy-saving air classifier mill, during the crushing process, the blanking control mechanism can input the crushed powder into the collection bin at a fixed speed. When the mass of the powder inside the blanking control mechanism increases, it can control the speed of the ore raw material entering the air crushing bin, so as to ensure the balance of the total amount of ore raw material inside the air crushing bin. Only when the total amount of ore raw material inside the air crushing bin remains balanced can the air jetting mechanism efficiently and high-quality crush the ore raw material.

[0017] 2. For this classification type energy-saving air classifier mill, multiple air jetting pipes inside the air jetting bin are connected through the air jetting bin, which can make the air flow speeds discharged from the multiple air jetting pipes the same. And the connecting partition plate is installed inside the air jetting pipe through the partition plate spring, which can make the air flow intensity discharged from the air jetting pipe more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structure schematic diagram of a classification type energy-saving air classifier mill of the present invention Figure 1 ; Figure 2 is a three-dimensional structure schematic diagram of a classification type energy-saving air classifier mill of the present invention Figure 2 ; Figure 3 is a three-dimensional structure schematic diagram of the mounting frame of a classification type energy-saving air classifier mill of the present invention; Figure 4 is a three-dimensional structure schematic diagram of the air crushing bin of a classification type energy-saving air classifier mill of the present invention Figure 1 ; Figure 5 is a three-dimensional structure schematic diagram of the air crushing bin of a classification type energy-saving air classifier mill of the present invention Figure 2 ; Figure 6 is a schematic diagram of the internal structure of the air crushing bin of a classification type energy-saving air classifier mill of the present invention; Figure 7Schematic three - dimensional structure diagram of the air - jet mechanism of a hierarchical energy - saving air - jet mill of the present invention; Figure 8 Schematic internal structure diagram of the air - jet mechanism of a hierarchical energy - saving air - jet mill of the present invention; Figure 9 Schematic internal structure diagram of the air - jet pipe of a hierarchical energy - saving air - jet mill of the present invention; Figure 10 Schematic explosion structure diagram of the air - flow pulverization bin of a hierarchical energy - saving air - jet mill of the present invention; Figure 11 Schematic three - dimensional structure diagram of the blanking control mechanism of a hierarchical energy - saving air - jet mill of the present invention; Figure 12 Schematic explosion structure diagram of the blanking control mechanism of a hierarchical energy - saving air - jet mill of the present invention.

[0019] In the figure: 1, mounting frame; 2, feed bin; 3, feeding pipe; 4, air intake mechanism; 5, upper air inlet pipe; 6, lower air inlet pipe; 7, air - jet mechanism; 71, air - jet chamber; 72, air - jet pipe; 73, air - flow communication groove; 74, communication partition plate; 75, connecting telescopic rod; 76, partition - plate mounting seat; 77, partition - plate spring; 8, air - flow pulverization bin; 81, ore pulverization bin; 82, lower limit ring; 83, air - flow blade; 84, pulverization limit ring; 85, upper limit ring; 86, discharge pipe; 9, blanking control mechanism; 91, feed pipe; 92, connecting bin; 93, transfer bin; 94, powder filter screen; 95, top connecting column; 96, drive connecting plate; 97, limit cylinder; 98, air - flow connecting cylinder; 10, discharge pipeline; 11, collection bin; 12, air - flow pipeline; 13, air extraction pump. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] As introduced in the background technology, there are deficiencies in the prior art. To solve the above - mentioned technical problems, the present application proposes a hierarchical energy - saving air - jet mill and a method for ultra - fine pulverization of ore. Embodiment 1

[0022] Please refer to Figure 1 - Figure 12, A hierarchical energy-saving air classifier mill, including an installation frame 1, an inlet hopper 2 is installed inside the installation frame 1, a feeding pipe 3 is connected to the bottom of the inlet hopper 2, an air inlet mechanism 4 is installed inside the installation frame 1, an upper air inlet pipe 5 is connected to the outside of the air inlet mechanism 4, a lower air inlet pipe 6 is connected to the outside of the air inlet mechanism 4, the other end of the lower air inlet pipe 6 is connected to an air jet mechanism 7, an air pulverization chamber 8 is installed inside the air jet mechanism 7, a feeding control mechanism 9 is connected to the top of the air pulverization chamber 8, a discharge pipe 10 is connected to the outside of the feeding control mechanism 9, the other end of the discharge pipe 10 is connected to a collection bin 11, an air flow pipe 12 is connected to the outside of the collection bin 11, and the other end of the air flow pipe 12 is connected to an air extraction pump 13; The air inlet mechanism 4 is internally communicated with the air jet mechanism 7 through the lower air inlet pipe 6, the air inlet mechanism 4 is internally communicated with the air pulverization chamber 8 through the upper air inlet pipe 5, the inside of the inlet hopper 2 is internally communicated with the feeding control mechanism 9 through the feeding pipe 3, and the inside of the feeding control mechanism 9 is internally communicated with the air pulverization chamber 8 through the upper air inlet pipe 5; The ore raw materials inside the inlet hopper 2 can enter the inside of the feeding control mechanism 9 through the feeding pipe 3, the air inlet mechanism 4 can drive the ore raw materials inside the feeding control mechanism 9 into the inside of the air pulverization chamber 8 through the upper air inlet pipe 5, the air inlet mechanism 4 can fill the air into the inside of the air jet mechanism 7 through the lower air inlet pipe 6, the air jet mechanism 7 can pulverize the ore raw materials inside the air pulverization chamber 8, and the pulverized ore inside the air pulverization chamber 8 can enter the inside of the collection bin 11 through the feeding control mechanism 9 and the discharge pipe 10.

[0023] During operation, the ore raw materials inside the feed bin 2 can enter the inside of the blanking control mechanism 9 through the material conveying pipe 3. The air intake mechanism 4 can input air into the inside of the air flow pulverizing bin 8 through the upper air inlet pipe 5. When the air flow passes through the inside of the upper air inlet pipe 5, it can bring the ore raw materials inside the blanking control mechanism 9 into the inside of the air flow pulverizing bin 8. The air intake mechanism 4 can also input air into the inside of the air flow injection mechanism 7 through the lower air inlet pipe 6. Then, the air flow injection mechanism 7 can pulverize the ore raw materials inside the air flow pulverizing bin 8. The pulverized ore raw materials inside the air flow pulverizing bin 8 then enter the inside of the blanking control mechanism 9. The blanking control mechanism 9 can input the pulverized ore powder into the inside of the discharge pipe 10 at a constant speed. The air extraction pump 13 can guide the ore raw materials inside the discharge pipe 10 into the inside of the collection bin 11. During the pulverizing process, the blanking control mechanism 9 can input the pulverized powder into the inside of the collection bin 11 at a fixed speed. And when the powder quality inside the blanking control mechanism 9 increases, it can control the speed of the ore raw materials entering the inside of the air flow pulverizing bin 8, thereby ensuring the balance of the total amount of ore raw materials inside the air flow pulverizing bin 8. Only when the total amount of ore raw materials inside the air flow pulverizing bin 8 remains balanced can the air flow injection mechanism 7 pulverize the ore raw materials efficiently and with high quality. Embodiment 2

[0024] The difference from the above embodiment is as follows. Please refer to Figure 1 - Figure 12 The air flow injection mechanism 7 includes an air flow injection chamber 71. The air flow injection chamber 71 is installed outside the air flow pulverizing bin 8. A plurality of air flow injection pipes 72 are installed inside the air flow injection chamber 71. An air flow communication groove 73 is formed inside the air flow injection pipe 72. A communication partition plate 74 is slidably installed inside the air flow injection pipe 72. A connecting telescopic rod 75 is connected to the outside of the communication partition plate 74. A partition plate mounting seat 76 is installed inside the air flow injection pipe 72. A partition plate spring 77 is installed outside the partition plate mounting seat 76.

[0025] A plurality of air flow injection pipes 72 are communicated with the lower air inlet pipe 6 through the air flow injection chamber 71. A plurality of protrusions are arranged on the outside of the communication partition plate 74. The protrusions on the outside of the communication partition plate 74 are slidably installed inside the air flow communication groove 73. The inside of the air flow injection pipe 72 is partitioned by the communication partition plate 74. The air intake mechanism 4 can inject air into the inside of the air flow injection pipe 72 through the lower air inlet pipe 6. The air flow inside the air flow injection pipe 72 can enter the inside of the air flow pulverizing bin 8 through a plurality of air flow injection pipes 72.

[0026] The outside of the communication partition plate 74 is connected to the outside of the partition plate mounting seat 76 by connecting the telescopic rod 75 and the partition plate spring 77. The protruding length of the outside of the communication partition plate 74 is less than the depth of the air flow communication groove 73. The two sides of the communication partition plate 74 can be communicated through the air flow communication groove 73. When the outside of the communication partition plate 74 fits against both ends of the air flow communication groove 73, the communication partition plate 74 can separate the inside of the air flow injection pipe 72. When the communication partition plate 74 is located in the middle part of the air flow communication groove 73, the air flow can pass through the inside of the air flow communication groove 73.

[0027] During operation, the intake mechanism 4 can input air flow into the inside of the air flow injection chamber 71 through the lower intake pipe 6. When the air flow enters the inside of the air flow injection chamber 71, the pressure inside the air flow injection chamber 71 gradually increases. When the pressure inside the air flow injection chamber 71 is relatively small, the outside of the communication partition plate 74 contacts one end of the air flow communication groove 73. At this time, the communication partition plate 74 can separate the inside of the air flow injection pipe 72. After the pressure inside the air flow injection chamber 71 increases, the communication partition plate 74 moves towards the center of the air flow injection chamber 71 inside the air flow communication groove 73. When the communication partition plate 74 moves towards the center of the air flow injection chamber 71, it can cause the connecting telescopic rod 75 and the partition plate spring 77 to elongate. At this time, the air flow inside the air flow injection chamber 71 can enter the inside of the air flow pulverizing chamber 8 through the air flow communication groove 73 to pulverize the ore raw materials. When the pressure inside the air flow injection chamber 71 is insufficient, the partition plate spring 77 contracts and can drive the communication partition plate 74 to move to separate the inside of the air flow injection chamber 71 again. The multiple air flow injection pipes 72 are communicated through the air flow injection chamber 71, which can make the air flow velocities discharged from the multiple air flow injection pipes 72 the same. And the communication partition plate 74 is installed inside the air flow injection pipe 72 through the partition plate spring 77, which can make the air flow intensity discharged from the air flow injection pipe 72 more stable. Embodiment Three

[0028] The difference from the above embodiment is as follows. Please refer to Figure 1 - Figure 12 , the air flow pulverizing chamber 8 includes an ore pulverizing chamber 81. The ore pulverizing chamber 81 is fixedly installed inside the air flow injection chamber 71. A lower limiting ring 82 is installed inside the ore pulverizing chamber 81. An air flow blade 83 is installed at the top inside the ore pulverizing chamber 81. The bottom of the air flow blade 83 is connected to a pulverizing limiting ring 84. The outside of the pulverizing limiting ring 84 is connected to an upper limiting ring 85. A discharge pipe 86 is installed at the top of the ore pulverizing chamber 81.

[0029] The connection position of the discharge pipe 86 and the ore pulverizing chamber 81 is at the center of the top of the ore pulverizing chamber 81. The connection position of the upper intake pipe 5 and the ore pulverizing chamber 81 is at the edge of the top of the ore pulverizing chamber 81. The intake mechanism 4 is communicated with the inside of the ore pulverizing chamber 81 through the upper intake pipe 5. When the intake mechanism 4 injects air into the interior of the ore crushing bin 81 through the upper intake pipe 5, it can drive the ore raw materials inside the blanking control mechanism 9 into the interior of the ore crushing bin 81. When the upper intake pipe 5 injects air into the interior of the ore crushing bin 81, it can drive the air flow blades 83 to rotate inside the ore crushing bin 81.

[0030] A plurality of openings are provided on the exteriors of both the upper limiting ring 85 and the lower limiting ring 82. The upper limiting ring 85 is rotatably installed inside the ore crushing bin 81 through the crushing limiting ring 84 and the air flow blades 83. The crushing limiting ring 84 is of a conical structure, and a channel is provided inside the crushing limiting ring 84 and is communicated with the discharge pipe 86. The crushing limiting ring 84 and the upper limiting ring 85 separate the interior of the ore crushing bin 81; When the air flow blades 83 drive the crushing limiting ring 84 to rotate inside the ore crushing bin 81, the upper limiting ring 85 can rotate on the top of the lower limiting ring 82. When the upper limiting ring 85 rotates on the top of the lower limiting ring 82, it can control the ore raw materials on the upper limiting ring 85 to evenly fall below the lower limiting ring 82. The crushing limiting ring 84 can guide the crushed ore into the interior of the discharge pipe 86.

[0031] During operation, the air flow inside the upper intake pipe 5 can drive the ore raw materials inside the blanking control mechanism 9 into the interior of the ore crushing bin 81. When the air flow inside the upper intake pipe 5 enters the interior of the ore crushing bin 81, it can drive the air flow blades 83 to rotate inside the ore crushing bin 81. When the air flow blades 83 rotate, they can also drive the crushing limiting ring 84 and the upper limiting ring 85 to rotate. The ore raw materials entering the interior of the ore crushing bin 81 can fall onto the upper limiting ring 85 along the exterior of the crushing limiting ring 84, and then enter below the lower limiting ring 82 through the openings on the upper limiting ring 85 and the lower limiting ring 82. The ore raw materials can only pass through when the openings on the upper limiting ring 85 and the openings on the lower limiting ring 82 coincide during the rotation of the upper limiting ring 85. Thus, the ore raw materials can be transported into the area below the crushing limiting ring 84 for crushing. Moreover, the conical crushing limiting ring 84 can define the shape of the crushing air flow inside the ore crushing bin 81 and can guide the crushed ore into the interior of the discharge pipe 86. Example Four

[0032] The difference from the above example is as follows. Please refer to Figure 1 - Figure 12, the blanking control mechanism 9 includes a feed pipe 91, the feed pipe 91 is connected to the top of the discharge pipe 86, the top of the feed pipe 91 is connected with a connection bin 92, a transfer bin 93 is installed inside the connection bin 92, a powder filter screen 94 is installed inside the transfer bin 93, a top connection column 95 is installed on the top of the transfer bin 93, a drive connection plate 96 is installed on the top of the top connection column 95, a limiting cylinder 97 is connected to the outside of the drive connection plate 96, an air flow connection cylinder 98 is installed inside the limiting cylinder 97, the air flow connection cylinder 98 is connected to the outside of the feed bin 2, and the bottom of the air flow connection cylinder 98 is connected to the upper intake pipe 5; A plurality of openings are provided inside both the limiting cylinder 97 and the air flow connection cylinder 98, and the openings on the limiting cylinder 97 and the air flow connection cylinder 98 are staggered from each other.

[0033] The bottom of the transfer bin 93 is a conical structure, the top of the transfer bin 93 is a circular structure, the inside of the transfer bin 93 is separated by the powder filter screen 94, one end of the discharge pipeline 10 passes through the connection bin 92 and communicates with the inside of the transfer bin 93, the top of the top connection column 95 is connected to the limiting cylinder 97 through the drive connection plate 96, and the powder filter screen 94 can control the falling speed of the ore powder; The ore powder inside the ore crushing bin 81 can enter the transfer bin 93 inside the connection bin 92 through the feed pipe 91, the ore powder inside the transfer bin 93 enters the collection bin 11 through the discharge pipeline 10 after passing through the powder filter screen 94, the change in the mass of the ore powder above the powder filter screen 94 can drive the transfer bin 93 to move up and down inside the connection bin 92, and when the transfer bin 93 moves up and down, it can drive the limiting cylinder 97 to move up and down through the top connection column 95 and the drive connection plate 96.

[0034] When the crushed ore powder is finished during operation, it enters the interior of the feed pipe 91 from the discharge pipe 86, and then enters the interior of the transfer bin 93 through the connecting bin 92. When the air flow and the ore powder move upward inside the transfer bin 93, the ore powder will fall onto the powder filter screen 94 under the guidance of the circular structure at the top of the transfer bin 93. After the ore powder falls onto the powder filter screen 94, it is transported through the powder filter screen 94 and enters the discharge pipeline 10. When the ore raw material particles entering the interior of the ore crushing bin 81 are relatively small, the crushing efficiency of the ore raw material increases, and the amount of ore powder entering the interior of the transfer bin 93 also increases. When the amount of ore powder entering the interior of the transfer bin 93 increases, the passing speed of the ore powder on the powder filter screen 94 remains unchanged, resulting in an increase in the mass of the ore powder on the powder filter screen 94. At this time, the transfer bin 93 moves downward inside the connecting bin 92. When the transfer bin 93 moves downward, it can drive the top connecting column 95 downward. When the top connecting column 95 moves downward, it can move downward outside the air flow connecting cylinder 98 through the limiting cylinder 97. When the limiting cylinder 97 moves downward, it can increase the overlap degree of the openings on the limiting cylinder 97 and the air flow connecting cylinder 98, thereby increasing the downward speed of the ore raw material inside the air flow connecting cylinder 98 and keeping the crushed ore raw material inside the ore crushing bin 81 in a balanced state. Example Five

[0035] An ultrafine crushing method for ore, using a classification type energy-saving air mill as in Examples 1 to 4, includes the following steps: During operation, the ore raw material inside the feed bin 2 can enter the interior of the blanking control mechanism 9 through the feed pipe 3; The air intake mechanism 4 can input air into the interior of the air flow crushing bin 8 through the upper air intake pipe 5 to bring the ore raw material inside the blanking control mechanism 9 into the interior of the air flow crushing bin 8; The air intake mechanism 4 can also input air into the interior of the air jet mechanism 7 through the lower air intake pipe 6 to crush the ore raw material inside the air flow crushing bin 8; The crushed ore raw material inside the air flow crushing bin 8 then enters the interior of the blanking control mechanism 9; And when the powder mass inside the blanking control mechanism 9 increases, it can control the speed of the ore raw material entering the interior of the air flow crushing bin 8.

[0036] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hierarchical energy-saving air classifier mill, comprising a mounting frame, characterized in that: An inlet bin is installed inside the mounting frame. A material conveying pipe is connected to the bottom of the inlet bin. An air intake mechanism is installed inside the mounting frame. An upper air inlet pipe is connected to the outside of the air intake mechanism. A lower air inlet pipe is connected to the outside of the air intake mechanism. The other end of the lower air inlet pipe is connected to an air flow injection mechanism. An air flow pulverizing bin is installed inside the air flow injection mechanism. A blanking control mechanism is connected to the top of the air flow pulverizing bin. An outlet pipe is connected to the outside of the blanking control mechanism. The other end of the outlet pipe is connected to a collection bin. An air flow pipe is connected to the outside of the collection bin. The other end of the air flow pipe is connected to an air extraction pump; The air intake mechanism is internally connected to the air flow injection mechanism through the lower air inlet pipe. The air intake mechanism is internally connected to the air flow pulverizing bin through the upper air inlet pipe. The inside of the inlet bin is internally connected to the inside of the blanking control mechanism through the material conveying pipe. The inside of the blanking control mechanism is internally connected to the inside of the air flow pulverizing bin through the upper air inlet pipe; The ore raw materials inside the inlet bin can enter the inside of the blanking control mechanism through the material conveying pipe. The air intake mechanism can drive the ore raw materials inside the blanking control mechanism into the inside of the air flow pulverizing bin through the upper air inlet pipe. The air intake mechanism can inject air into the inside of the air flow injection mechanism through the lower air inlet pipe. The air flow injection mechanism can pulverize the ore raw materials inside the air flow pulverizing bin. The pulverized ore inside the air flow pulverizing bin can enter the inside of the collection bin through the blanking control mechanism and the outlet pipe.

2. The classified energy-saving airflow mill according to claim 1, characterized in that: The air flow injection mechanism includes an air flow injection chamber. The air flow injection chamber is installed outside the air flow pulverizing bin. A plurality of air flow injection pipes are installed inside the air flow injection chamber. An air flow communication groove is formed inside the air flow injection pipe. A communication partition plate is slidably installed inside the air flow injection pipe. A connecting telescopic rod is connected to the outside of the communication partition plate. A partition plate mounting seat is installed inside the air flow injection pipe. A partition plate spring is installed outside the partition plate mounting seat.

3. The classified energy-saving air classifier mill according to claim 2, characterized in that: A plurality of the air flow injection pipes are connected to the lower air inlet pipe through the air flow injection chamber. A plurality of protrusions are arranged on the outside of the communication partition plate. The protrusions on the outside of the communication partition plate are slidably installed inside the air flow communication groove. The inside of the air flow injection pipe is partitioned by the communication partition plate; The air intake mechanism can inject air into the inside of the air flow injection pipe through the lower air inlet pipe. The air flow inside the air flow injection pipe can enter the inside of the air flow pulverizing bin through a plurality of air flow injection pipes.

4. The classified energy-saving air classifier mill according to claim 3, characterized in that: The outside of the communication partition plate is connected to the outside of the partition plate mounting seat through the connecting telescopic rod and the partition plate spring. The length of the protrusions on the outside of the communication partition plate is less than the depth of the air flow communication groove. Both sides of the communication partition plate can be connected through the air flow communication groove; When the outside of the communication partition plate fits with both ends of the air flow communication groove, the communication partition plate can partition the inside of the air flow injection pipe. When the communication partition plate is located in the middle part of the air flow communication groove, the air flow can pass through the inside of the air flow communication groove.

5. The classified energy-saving air classifier mill according to claim 4, wherein: The air jet milling bin includes an ore milling bin, which is fixedly installed inside the air jet bin. A lower limiting ring is installed inside the ore milling bin. An air flow blade is installed at the top inside the ore milling bin. The bottom of the air flow blade is connected to a crushing limiting ring. The outside of the crushing limiting ring is connected to an upper limiting ring. An outlet pipe is installed at the top of the ore milling bin.

6. The classifying type energy-saving air mill according to claim 5, wherein: The connection between the outlet pipe and the ore milling bin is at the center of the top of the ore milling bin. The connection between the upper inlet pipe and the ore milling bin is at the edge of the top of the ore milling bin. The air intake mechanism is communicated with the inside of the ore milling bin through the upper inlet pipe. When the air intake mechanism injects air flow into the inside of the ore milling bin through the upper inlet pipe, it can drive the ore raw materials inside the blanking control mechanism into the inside of the ore milling bin. When the upper inlet pipe injects air flow into the inside of the ore milling bin, it can drive the air flow blade to rotate inside the ore milling bin.

7. The classified energy-saving air classifier mill according to claim 6, wherein: A plurality of openings are provided on the outside of both the upper limiting ring and the lower limiting ring. The upper limiting ring is rotationally installed inside the ore milling bin through the crushing limiting ring and the air flow blade. The crushing limiting ring is a conical structure. A channel is provided inside the crushing limiting ring and is communicated with the outlet pipe. The crushing limiting ring and the upper limiting ring separate the inside of the ore milling bin. When the air flow blade drives the crushing limiting ring to rotate inside the ore milling bin, the upper limiting ring can rotate on the top of the lower limiting ring. When the upper limiting ring rotates on the top of the lower limiting ring, it can control the ore raw materials on the upper limiting ring to evenly fall below the lower limiting ring. The crushing limiting ring can guide the crushed ore into the inside of the outlet pipe.

8. The classified energy-saving airflow mill according to claim 7, characterized in that: The blanking control mechanism includes a feed pipe, which is connected to the top of the outlet pipe. The top of the feed pipe is connected to a connection bin. A transfer bin is installed inside the connection bin. A powder filter screen is installed inside the transfer bin. A top connection column is installed at the top of the transfer bin. A transmission connection plate is installed at the top of the top connection column. The outside of the transmission connection plate is connected to a limiting cylinder. An air flow connection cylinder is installed inside the limiting cylinder. The outside of the air flow connection cylinder is connected to a feed bin. The bottom of the air flow connection cylinder is connected to the upper inlet pipe. A plurality of openings are provided inside both the limiting cylinder and the air flow connection cylinder. The openings on the limiting cylinder and the air flow connection cylinder are staggered from each other.

9. The classified energy-saving air classifier mill according to claim 8, characterized in that: The bottom of the transfer bin is a conical structure. The top of the transfer bin is a circular structure. The inside of the transfer bin is separated by a powder filter screen. One end of the outlet pipe passes through the connection bin and is communicated with the inside of the transfer bin. The top of the top connection column is connected to the limiting cylinder through the transmission connection plate. The powder filter screen can control the falling speed of the ore powder. The ore powder inside the ore crushing bin can enter the transfer bin inside the connection bin through the feed pipe. The ore powder inside the transfer bin passes through the powder filter screen and then enters the collection bin through the discharge pipeline. The change in the mass of the ore powder above the powder filter screen can drive the transfer bin to move up and down inside the connection bin. When the transfer bin moves up and down, it can drive the limit cylinder to move up and down through the top connection column and the transmission connection plate.

10. A method for ultrafine pulverization of ores, characterized in that, Using a hierarchical energy-saving air classifier mill as described in any one of claims 1-9, comprising the following steps; During operation, the ore raw materials inside the feed bin can enter the inside of the feeding control mechanism through the feed pipe; The air intake mechanism can input air into the air flow crushing bin through the upper air inlet pipe to bring the ore raw materials inside the feeding control mechanism into the air flow crushing bin; The air intake mechanism can also input air into the air jet mechanism through the lower air inlet pipe to crush the ore raw materials inside the air flow crushing bin; The crushed ore raw materials inside the air flow crushing bin then enter the inside of the feeding control mechanism; And when the powder mass inside the feeding control mechanism increases, it can control the speed of the ore raw materials entering the air flow crushing bin.

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