Impact jet type vibration extrusion crushing device

Abstract

The application discloses an impact jet flow type vibration extrusion crushing device, which mainly solves the technical problems of low production efficiency, single crushing mode and lack of integrated crushing method in superfine crushing of mine powder in the prior art. The technical scheme mainly comprises the following steps: mine powder jet flow, vibration extrusion, secondary airflow acceleration and impact crushing. The crushing process integrates gas-solid two-phase flow, extrusion, vibration and impact crushing, and realizes a complete crushing process in a closed circuit mode. The production method of integrating gas-solid two-phase flow, extrusion, vibration and impact crushing realizes a closed-circuit process of mine powder crushing. The method can ensure that the particle size range of the final product is narrow and the uniformity is high. The material in the final product of coarse particle size mine powder is fully crushed in the equipment, which can maximally reduce the uneven crushing of the ore under a single crushing method, effectively avoid the destruction of the particle morphology structure and crystal characteristics of the mine powder caused by crushing of the mine powder under high-strength grinding and crushing of traditional machinery through shearing stress, and effectively improve the processing fineness and separation indexes of the fine crushed material.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of powder crushing, in particular to an impact jet type vibration extrusion crushing device. BACKGROUND

[0002] With the wide application of superfine powder in industry and agriculture, superfine crushing of ore powder is an important process step in its production and application. Different crushing equipment is used to meet the increasing requirements of product particle size and quality in the production process. The present application introduces the method of impact jet type vibration extrusion into the ore crushing industry. Currently, domestic ore crushing mainly uses sand mill and other strong impact machines in the ore crushing process. The process flow is simple, the system is stable, and the operation and maintenance are convenient. However, the phenomenon of insufficient crushing is ignored, and the side leakage and uncrushed ore is taken as the final product of ore powder, so the product particle size range is wide, coarse and uneven, the material is not fully crushed, and the crushing effect is not good.

[0003] Therefore, it is of practical significance to improve the existing crushing process and develop new methods of ore powder crushing. The impact jet type vibration extrusion crushing process not only ensures that the particle size range of the final product is narrow and the uniformity of coarse and fine is high, but also avoids the damage to the crystal morphology structure and the characteristics of the mineral by applying strong shear stress in traditional crushing devices such as stirred mill and sand mill, and the secondary crushing form also maximizes the single process crushing material fineness, effectively reduces the process energy consumption of crushing operation, improves the selection index, and truly realizes "high quantity and high quality crushing". SUMMARY

[0004] In order to solve the above-mentioned problems, the present application mainly uses the impact jet type vibration extrusion method to make the crushing of ore powder reach the maximum idealization, thereby solving the problems of difficult superfine powder crushing, uneven particle size control, low crushing precision and the like.

[0005] The object of the present application is to provide an impact jet type vibration extrusion crushing device.

[0006] The technical scheme of the present application is as follows: the present application aims at the technical problems of low production efficiency, single crushing mode and lack of integrated crushing method in the superfine crushing of the mineral powder in the prior art, and the main points of the technical scheme are as follows: the steps of the mineral powder jet flow, vibration extrusion, secondary airflow acceleration and impact crushing are included; the gas-solid two-phase flow, extrusion, vibration and impact crushing are integrated in the crushing process, and the closed circuit form is adopted to realize the complete crushing process; the production method of integrating the gas-solid two-phase flow, extrusion, vibration and impact crushing to realize the closed process flow of the mineral powder crushing not only ensures that the particle size range of the final product is narrow and the uniformity is high, but also maximally reduces the uneven crushing of the ore under the single crushing method, effectively avoids the damage of the particle morphology structure and the crystal characteristics of the mineral powder caused by the crushing of the mineral powder under the shear stress in the traditional strong mechanical grinding crushing, and effectively improves the processing fineness and the selection index of the finely crushed material.

[0007] In the mineral powder jet flow step of the present application, the gas tank (1) is connected with the right side rotating pipe joint (2), the gas flow is divided into the upper main gas flow and the lower auxiliary gas flow pipeline, the opening and closing valve (3), the speed control valve 1 (4) and the pressure regulating valve 1 (5) are used to control the opening and closing, the speed and the pressure of the upper main gas flow in sequence, the vibration motor 1 (6) is arranged outside the middle part of the storage tank (7) to provide continuous vibration for the storage tank (7), promote the vibration feeding, the storage tank (8) is fixed on the upper part of the main gas flow pipeline through the positioning spring (9) and the feeding component rack (10), and is connected with the feeding valve (7) to realize the feeding control of the mineral powder particles to the main gas flow pipeline, and finally the mineral powder jet flow nozzle (11) is used to jet into the vibration extrusion step;

[0008] In the vibration extrusion step of the present application, the vibration motor 2 (13) is connected with the vibration disc 1 (16) to provide the kinetic energy for the vibration extrusion crushing, the vibration disc fixing rack 1 (14) provides a changeable position fixing for the vibration disc 1 (16) through the vibration spring 1 (15), the vibration motor 3 (24) is connected with the vibration disc 2 (22) to provide the kinetic energy for the vibration extrusion crushing, the vibration disc fixing rack 2 (25) provides a changeable position fixing for the vibration disc 2 (22) through the vibration spring 2 (23), the mineral powder and the gas flow pass through the small gap between the vibration disc 1 (16) and the vibration disc 2 (22), the two vibration discs continuously collide and vibrate regularly, so that the mineral powder continuously collides and is extruded in the gap, the particles continuously contact each other and the wall surface, and the huge kinetic energy causes the crushing of the mineral powder.

[0009] The secondary airflow acceleration step of the application, the vibration extrusion may cause the powder particles to move in the vibration disc 1 (16) and the vibration disc 2 (22) to generate the same speed dissipation as the jet flow direction, and a certain secondary airflow acceleration needs to be given for the same speed direction; the lower auxiliary airflow pipeline is connected with the rotating pipe joint 2 (28) to divide the airflow into the upper and lower acceleration airflow pipelines, the opening and closing valves 2 (27) and 3 (29) are used for respectively controlling the opening and closing of the upper and lower airflow, the upper acceleration airflow pipeline is connected with the auxiliary jet nozzle 1 (12) and the auxiliary jet nozzle 2 (26), and two acceleration airflows are provided for the gas-solid two-phase flow before the vibration extrusion program; the lower acceleration airflow pipeline is connected with the secondary acceleration nozzle 1 (17) and the secondary acceleration nozzle 2 (21), and two acceleration airflows are provided for the powder which has stalled after the vibration extrusion program;

[0010] The impact breaking step of the application, the impact ball curtain (18) is arranged on the side of the ball curtain fixing frame (19), and the collecting box (20) is arranged below the impact ball curtain (18); the airflow carries the mineral powder material after the vibration extrusion breaking, impacts the surface of the impact ball curtain (18) to realize the uniform secondary impact and collision breaking of the mineral powder, the broken mineral powder stalls instantaneously and falls into the collecting box (20) below, and the material after being placed for a period of time is the final broken product.

[0011] The working principle of the application is as follows: the jet flow speed, the gas pressure, the controllability of the feeding, the adjustability of the vibration extrusion frequency and the manipulability of the impact breaking kinetic energy are used, the collecting equipment and the airflow acceleration components are matched, and the jet flow type vibration extrusion breaking of the superfine powder is optimized. Specifically, the gas tank provides the initial kinetic energy for the airflow and the particles, the superfine powder enters the lower pipeline through the vibration auxiliary effect of the storage tank, is fully mixed with the high-pressure airflow provided by the pneumatic component in the pipeline, is vertically and horizontally jetted into the vibration extrusion area through the jet nozzle, is broken for the first time through the vibration extrusion of the vibration disc, the stalled mineral powder particles after the breaking continue to accelerate under the action of the secondary acceleration airflow, move towards the impact breaking area, finally impact the ball curtain wall to realize the secondary impact breaking, and finally fall into the collecting box below under the guidance of the special spherical wall to realize the collection of the broken superfine powder.

[0012] The application has the following beneficial effects: the impact jet flow type vibration extrusion breaking process not only ensures that the particle size range of the final product is narrow and the uniformity of the coarse and fine degrees is high, but also avoids the damage to the mineral crystal morphology structure and the self characteristics caused by the application of the strong shear stress through the traditional breaking devices such as the stirring mill and the sand mill, the form of the secondary breaking also maximizes the fineness of the material in a single working procedure, effectively reduces the process energy consumption of the breaking operation, improves the selection index, and truly realizes the "high quantity and high quality breaking". BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1is the schematic diagram of the overall structure of the present application.

[0014] Figure 2 is the schematic diagram of the crushing component structure of the present application.

[0015] Figure 3 is the schematic diagram of the feeding component structure of the present application.

[0016] In the figure: 1 - gas storage tank, 2 - turn-through pipe joint 1, 3 - on-off valve 1, 4 - speed control valve 1, 5 - pressure regulating valve 1, 6 - vibration motor 1, 7 - feeding valve, 8 - storage tank, 9 - positioning spring, 10 - feeding component rack, 11 - ore powder jet nozzle, 12 - auxiliary jet nozzle 1, 13 - vibration motor 2, 14 - vibration disc fixed rack 1, 15 - vibration spring 1, 16 - vibration disc 1, 17 - secondary acceleration nozzle 1, 18 - impact ball curtain, 19 - ball curtain fixed rack, 20 - collection box, 21 - secondary acceleration nozzle 2, 22 - vibration disc 2, 23 - vibration spring 2, 24 - vibration motor 3, 25 - vibration disc fixed rack 2, 26 - auxiliary jet nozzle 2, 27 - on-off valve 2, 28 - turn-through pipe joint 2, 29 - on-off valve 3, 30 - pressure regulating valve 2, 31 - speed control valve 2, 32 - on-off valve 4. DETAILED DESCRIPTION

[0017] The present application will be further described in detail below in combination with the drawings.

[0018] Example 1, the present application under the prior art of ore powder superfine crushing is faced with the problem of low production efficiency, single crushing method, lack of integration of crushing method and other technical problems. The technical scheme is as follows: including ore powder jet, vibration extrusion, secondary airflow acceleration, impact crushing and other steps; wherein the crushing process integrates gas-solid two-phase flow, extrusion, vibration and impact crushing, and adopts closed circuit form to realize complete crushing process; the production method of "integrating gas-solid two-phase flow, extrusion, vibration and impact crushing to realize the closed process flow of ore powder crushing" not only ensures that the particle size range of the final product is narrow and the uniformity is high; the material in the coarse particle size ore powder final product is fully crushed in the equipment, which can maximize the reduction of uneven ore crushing under single crushing method, effectively avoids the damage of ore particle morphology structure and crystal characteristics caused by crushing through shear stress under traditional strong mechanical grinding crushing, and effectively improves the processing fineness and selection index of fine crushing material.

[0019] Example 2, the mineral powder jet step of the application, the gas tank (1) is connected to the right side of the through pipe joint (2), and the gas flow is divided into an upper main gas flow and a lower auxiliary gas flow pipeline. The opening and closing valve (3), the speed control valve 1 (4), and the pressure regulating valve 1 (5) are arranged in sequence to control the opening and closing, the speed, and the pressure of the upper main gas flow, respectively. The vibration motor 1 (6) is arranged outside the middle part of the storage tank (7) to provide continuous vibration for the storage tank, promote the vibration feeding, and the storage tank (8) is fixed on the upper part of the main gas flow pipeline through the positioning spring (9) and the feeding component rack (10), and is connected to the feeding valve (7) to realize the feeding control of the mineral powder particles to the main gas flow pipeline. Finally, the mineral powder jet nozzle (11) is jetted into the vibration extrusion step, and the rest is the same as the above example.

[0020] Example 3, the vibration extrusion step of the application, the vibration motor 2 (13) is connected to the vibration disc 1 (16) to provide kinetic energy for the vibration extrusion and crushing of the vibration disc. The vibration disc fixing rack 1 (14) provides a variable position fixing for the vibration disc 1 (16) through the vibration spring 1 (15). The vibration motor 3 (24) is connected to the vibration disc 2 (22) to provide kinetic energy for the vibration extrusion and crushing of the vibration disc. The vibration disc fixing rack 2 (25) provides a variable position fixing for the vibration disc 2 (22) through the vibration spring 2 (23). The mineral powder and the gas flow pass through the small gap between the vibration disc 1 (16) and the vibration disc 2 (22). The continuous collision and regular vibration of the two vibration discs cause the mineral powder to continuously collide and be extruded in the gap. The continuous contact between the particles and the wall surface causes the crushing of the mineral powder due to the huge kinetic energy. The rest is the same as the above example.

[0021] Example 4, the secondary gas flow acceleration step of the application, the vibration extrusion may cause the powder particles to move in the vibration disc 1 (16) and the vibration disc 2 (22) to generate the same speed dissipation as the jet direction, and a certain secondary gas flow acceleration needs to be given in the same speed direction. The lower auxiliary gas flow pipeline is connected to the through pipe joint 2 (28) to divide the gas flow into upper and lower acceleration gas flow pipelines. The opening and closing valve 2 (27) and the opening and closing valve 3 (29) control the opening and closing of the upper and lower gas flows, respectively. The upper acceleration gas flow pipeline is connected to the auxiliary jet nozzle 1 (12) and the auxiliary jet nozzle 2 (26) to provide two acceleration gas flows for the gas-solid two-phase flow before the vibration extrusion program. The lower acceleration gas flow pipeline is connected to the secondary acceleration nozzle 1 (17) and the secondary acceleration nozzle 2 (21) to provide two acceleration gas flows for the powder that has lost speed after the vibration extrusion program. The rest is the same as the above example.

[0022] Embodiment 5, the impact crushing step of the application, the impact ball curtain (18) is arranged on the side of the ball curtain fixing frame (19), and the collecting box (20) is located at the lower part thereof, the airflow carries the crushed mineral powder material after the vibration extrusion, impacts the surface of the impact ball curtain (18) to realize the uniform secondary impact and collision crushing of the mineral powder, the crushed mineral powder is stalled instantaneously and falls into the lower collecting box (20), and the material after standing for a period of time is the final crushing product, and the rest is the same as the above-mentioned embodiment.

[0023] The working principle of the application is as follows: the jet flow vibration extrusion crushing of the superfine powder is optimized through the controllability of jet flow speed, air pressure and feeding, the adjustability of vibration extrusion frequency, the maneuverability of impact crushing kinetic energy, the matching of collecting equipment and airflow acceleration components. Specifically, the gas tank provides initial kinetic energy for the airflow and particles, the superfine powder enters the lower pipeline under the vibration auxiliary effect of the storage tank, is fully mixed with the high-pressure airflow provided by the pneumatic component in the pipeline, is jetted into the vibration extrusion area through the jet flow nozzle vertically and horizontally, is crushed for the first time through the vibration extrusion effect of the vibration disc, the stalled mineral powder particles after crushing continue to accelerate towards the impact crushing area under the action of the secondary acceleration airflow, finally impact the ball curtain wall to realize secondary impact crushing, and finally fall into the lower collecting box under the guidance of the special spherical wall to realize the collection of the crushed superfine powder.

[0024] The application has the following beneficial effects: the impact jet flow vibration extrusion crushing process not only ensures that the particle size range of the final product is narrow and the uniformity of the coarse and fine is high, but also avoids the damage to the crystal morphology structure and the characteristics of the mineral caused by the application of strong shear stress through traditional crushing devices such as the stirring mill and the sand mill, and the form of secondary crushing also maximizes the fineness of the material crushed in a single process, effectively reduces the process energy consumption of the crushing operation, improves the selection index, and truly realizes the "high quantity and high quality crushing".

[0025] The above only describes the preferred embodiments of the application and is not used to limit the application. For those skilled in the art, the application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. An impact jet type vibratory extrusion crushing device, characterized in that, It includes the following steps: It optimizes the jet-type vibration extrusion crushing of ultrafine powder by controlling the jet velocity, air pressure and feed, adjusting the vibration extrusion frequency, and manipulating the impact crushing kinetic energy, while combining collection equipment and airflow acceleration components. Specifically, the air tank provides initial kinetic energy for the airflow and particles. The ultrafine powder enters the lower pipe through the vibration assistance effect of the storage tank. After being fully mixed with the high-pressure airflow provided by the pneumatic components in the pipe, it enters the vibration extrusion area through the jet nozzle vertically and horizontally. The first crushing is achieved by the vibration extrusion action of the vibrating plate. After crushing, the decelerated mineral powder particles continue to accelerate towards the impact crushing area under the action of the secondary acceleration airflow, and finally collide with the wall surface of the spherical curtain to achieve secondary impact crushing. Finally, under the guidance of the special spherical wall surface, the mineral powder falls into the collection box at the bottom to collect the crushed ultrafine powder. In the vibration extrusion step, the vibration motor 2 (13) is connected to the vibration plate 1 (16) to provide it with the kinetic energy for vibration extrusion and crushing. The vibration plate fixing frame 1 (14) provides a variable position fixation for the vibration plate 1 (16) through the vibration spring 1 (15). The vibration motor 3 (24) is connected to the vibration plate 2 (22) to provide it with the kinetic energy for vibration extrusion and crushing. The vibration plate fixing frame 2 (25) provides a variable position fixation for the vibration plate 2 (22) through the vibration spring 2 (23). The mineral powder and airflow pass through the very small gap between the vibration plate 1 (16) and the vibration plate 2 (22). The continuous collision and regular vibration of the two vibration plates cause the mineral powder to continuously collide and be squeezed in the gap. The particles are in constant contact with each other and with the wall. The huge kinetic energy causes the mineral powder to be crushed. In the secondary airflow acceleration step, the vibration and extrusion cause the powder particles to move in the vibrating plate 1 (16) and vibrating plate 2 (22) and generate velocity dissipation in the same direction as the jet. It is necessary to provide a certain amount of secondary airflow acceleration for the same velocity direction. The lower auxiliary airflow pipe is connected to the swivel pipe joint 2 (28) to split the airflow to the upper and lower acceleration airflow pipes. The opening and closing valves 2 (27) and 3 (29) control the opening and closing of the upper and lower airflows respectively. The upper acceleration airflow pipe is connected to the auxiliary jet nozzle 1 (12) and the auxiliary jet nozzle 2 (26) to provide two acceleration airflows for the gas-solid two-phase flow before the vibration and extrusion procedure. The lower acceleration airflow pipe is connected to the secondary acceleration nozzle 1 (17) and the secondary acceleration nozzle 2 (21) to provide two acceleration airflows for the powder that has already stalled after the vibration and extrusion procedure.

2. The impact jet type vibratory crushing device according to claim 1, characterized in that: In the mineral powder jetting step, the gas storage tank (1) is connected to the right-side connecting pipe joint (2) to split the airflow into the upper main airflow and the lower auxiliary airflow pipe. The opening and closing valve (3), speed control valve 1 (4), and pressure regulating valve 1 (5) control the opening and closing, speed, and pressure of the upper main airflow in sequence. The vibration motor 1 (6) is arranged on the outside of the middle part of the storage tank (8) to provide continuous vibration and promote vibration feeding. The storage tank (8) is fixed to the upper part of the main airflow pipe through the positioning spring (9) and the feeding component frame (10), and is connected to it through the feeding valve (7) to realize the feeding control of mineral powder particles into the main airflow pipe. Finally, the mineral powder jetting nozzle (11) jets into the vibration extrusion step.

3. The impact jet type vibratory crushing device according to claim 1, characterized in that: In the impact crushing step, the impact spherical curtain (18) is placed on the side of the spherical curtain fixing frame (19), and the collection box (20) is located below it. The airflow carries the mineral powder material that has been crushed by vibration and compression and impacts the surface of the impact spherical curtain (18) to achieve uniform secondary impact and collision crushing of the mineral powder. The crushed mineral powder instantly loses speed and falls into the lower collection box (20). The material after standing for a period of time is the final crushed product.

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