Cyclone ultrafine grinder

Abstract

The invention relates to the technical field of crushing equipment, in particular to a cyclone ultrafine crusher which comprises a rack, a first crushing system, a second crushing system and a crushing cavity are arranged on the rack, and the first crushing system and the second crushing system are both in sealing fit with the crushing cavity and distributed on the two sides of the crushing cavity. The first crushing system comprises a first motor and a first crushing wheel driven by the first motor to rotate, the second crushing system comprises a second motor and a second crushing wheel driven by the second motor to rotate, and the first crushing wheel and the second crushing wheel are coaxially and symmetrically arranged in the crushing cavity; according to the cyclone type ultrafine pulverizer, several pulverizing principles are combined together, and pulverizing is achieved through cyclone and impact generated between the pair of pulverizing wheels rotating independently; the technical production equipment has the advantages of being wide in application range, low in cost and environmentally friendly.

Description

Technical Field

[0001] The invention relates to the technical field of pulverizing equipment, in particular to a cyclone type ultra-fine pulverizer. Background Art

[0002] Ultrafine pulverizer is a device that uses air separation, heavy pressure grinding and shearing to achieve ultrafine grinding of dry materials. It consists of a cylindrical grinding chamber, a grinding wheel, a grinding rail, a fan, a material collection system, etc. The material enters the cylindrical grinding chamber through the feeding port and is crushed by the grinding wheel that moves in a circle along the grinding rail. The crushed material is carried out of the grinding chamber by the negative pressure airflow caused by the fan and enters the material collection system. It is filtered by the filter bag, the air is discharged, and the material and dust are collected to complete the crushing.

[0003] At present, the more popular screenless (it is difficult to achieve ultrafine grinding with a screen) ultrafine series grinders on the market are air flow grinders, vibration mills, ball mills, etc. These grinders have their own characteristics, but considering energy conservation, environmental protection and efficiency, there are pros and cons. The use scope of air flow grinders is limited, the output is not high, and the investment is large; the vibration grinder has low efficiency and is difficult to clean; the ball mill is similar to the vibration grinder, with low output, inconvenient cleaning and high cost.

[0004] Therefore, it is necessary to propose an ultrafine pulverizer that can solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art and to provide a cyclone type ultrafine pulverizer. The present invention is a cyclone type ultrafine pulverizer that combines several pulverizing principles together. The pulverizing is achieved through the whirlwind and impact generated between a pair of independently rotating pulverizing wheels. Therefore, the technical production equipment of the present invention has the advantages of wide range of use, low cost and environmental protection.

[0006] The technical solution adopted by the present invention is as follows: a cyclone-type ultrafine pulverizer comprises a frame, on which a first pulverizing system, a second pulverizing system and a pulverizing chamber are arranged, the first pulverizing system and the second pulverizing system are both sealed with the pulverizing chamber and are distributed on both sides of the pulverizing chamber, the first pulverizing system comprises a first motor and a first pulverizing wheel driven to rotate by the first motor, the second pulverizing system comprises a second motor and a second pulverizing wheel driven to rotate by the second motor, the first pulverizing wheel and the second pulverizing wheel are coaxially and symmetrically arranged in the pulverizing chamber, and a pulverizing space is formed between the first pulverizing wheel and the second pulverizing wheel.

[0007] A fixed plate and a slide rail are fixed on the frame, the first crushing system penetrates the fixed plate and is fixedly connected to the frame through the fixed plate, a sliding plate is slidably matched on the slide rail, the second crushing system penetrates the sliding plate and is slidably connected to the frame through the sliding plate, and the second crushing system slides back and forth along the axial direction of the second crushing wheel.

[0008] The ends of the first crushing wheel and the second crushing wheel that are close to each other are both cylinders, and the ends that are away from each other are both truncated cones. The crushing chamber is provided with a cylindrical section and a truncated cone section that are compatible with the first crushing wheel. The truncated cone section is fixedly connected to the fixed plate. The sliding plate is provided with a discharge chamber at a position corresponding to the second crushing wheel. A discharge ring is clamped at the end of the discharge chamber. The discharge ring surrounds the outer circumference of the second crushing wheel, and the inner wall of the discharge ring is provided with an inclined cone surface that is compatible with the second crushing wheel. The second crushing wheel and the discharge ring are simultaneously plug-fitted with the cylindrical section.

[0009] It also includes an adjusting screw with a smooth rod at one end and a threaded rod at the other end. One end of the smooth rod penetrates the fixed plate to form a plug-in fit, and one end of the threaded rod penetrates the sliding plate to form a threaded fit. The end of the adjusting screw with the thread is also connected to a hand wheel, and the axis of the adjusting screw is parallel to the axis of the second crushing wheel.

[0010] Two stoppers are arranged in the middle of the adjusting screw rod, one stopper is used to abut against the fixed plate, and the other stopper is used to abut against the sliding plate.

[0011] The sliding plate is also provided with a locking assembly, which has a locking state for restricting the sliding of the sliding plate and an unlocking state for allowing the sliding of the sliding plate.

[0012] A plurality of locking screws are arranged on the periphery of the crushing chamber, a connecting flange is further extended from the end edge of the discharge chamber, a plurality of U-shaped grooves for the locking screws to pass through are opened on the periphery of the connecting flange, one end of each locking screw passing through the U-shaped groove is threadedly connected with a nut, the locking screw can be locked in the U-shaped groove by the nut, and the crushing chamber is connected to the connecting flange through the cooperation of the locking screw and the nut.

[0013] A feed assembly is provided at one end of the crushing chamber close to the fixed plate, and the feed assembly includes a feed pipe connected to the side of the crushing chamber, the side wall of the feed pipe is also connected to an air intake pipe, and the side of the discharge chamber is connected to a discharge pipe whose axis is tangent to the circumference of the discharge chamber.

[0014] A sealing ring is arranged between the discharge ring and the crushing chamber.

[0015] The beneficial effects of the present invention are as follows: The present invention is a cyclone-type ultrafine pulverizer that combines several pulverizing principles together, and achieves pulverization through the cyclone and impact generated between a pair of independently rotating pulverizing wheels. It has both airflow pulverizing effect (with spiral cyclone airflow) and mechanical impact, shearing, friction, etc. It is a combination of the specialties of several pulverizers, so the technical production equipment of the present invention has the advantages of wide range of use, low cost and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the present invention.

[0017] Figure 1 It is a structural schematic diagram of the cyclone type ultrafine pulverizer of the present invention;

[0018] Figure 2 It is a cross-sectional schematic diagram of the present invention;

[0019] Figure 3 for Figure 2 A local enlarged schematic diagram of the middle A;

[0020] Figure 4 It is a structural schematic diagram of another perspective of the present invention;

[0021] Figure 5 for Figure 4 A partial enlarged schematic diagram of point B in the middle;

[0022] Figure 6 It is a cross-sectional schematic diagram of the discharge chamber of the present invention;

[0023] In the figure, 1-frame, 2-first crushing system, 3-second crushing system, 4-crushing chamber, 5-first motor, 6-first crushing wheel, 7-second motor, 8-second crushing wheel, 9-crushing space, 10-fixed plate, 11-slide rail, 12-slide plate, 13-cylindrical section, 14-conical section, 15-discharge chamber, 16-discharge ring, 17-oblique cone surface, 18-adjusting screw, 19-hand wheel, 20-block, 21-locking screw, 22-connecting flange, 23-U-shaped groove, 24-nut, 25-feeding assembly, 26-feeding pipe, 27-inlet pipe, 28-discharge pipe, 29-sealing ring, 30-locking assembly. DETAILED DESCRIPTION

[0024] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0026] The directions and positions mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., are only for reference to the directions or positions of the drawings. Therefore, the directions and positions used are for explaining and understanding the present invention, but not for limiting the scope of protection of the present invention.

[0027] like Figures 1 to 6 As shown, an embodiment of the present invention is a cyclone type ultrafine pulverizer, comprising a frame 1, on which a first pulverizing system 2, a second pulverizing system 3 and a pulverizing chamber 4 are provided, the first pulverizing system 2 and the second pulverizing system 3 are both sealed with the pulverizing chamber 4 and are distributed on both sides of the pulverizing chamber 4, the first pulverizing system 2 comprises a first motor 5 and a first pulverizing wheel 6 driven to rotate by the first motor 5, the second pulverizing system 3 comprises a second motor 7 and a second pulverizing wheel 8 driven to rotate by the second motor 7, the first pulverizing wheel 6 and the second pulverizing wheel 8 are coaxially and symmetrically arranged in the pulverizing chamber 4, and a pulverizing space 9 is formed between the first pulverizing wheel 6 and the second pulverizing wheel 8.

[0028] The beneficial effects of such a setting are as follows: the present invention is a cyclone type ultrafine pulverizer that combines several pulverization principles together, and achieves pulverization through the cyclone and impact generated between a pair of independently rotating pulverizing wheels. It has both airflow pulverization effect (with spiral cyclone airflow) and mechanical impact, shearing, friction, etc. It is a combination of the specialties of several pulverizers, so the technical production equipment of the present invention has the advantages of wide range of use, low cost and environmental protection. Moreover, the rotation direction of the first pulverizing wheel and the second pulverizing wheel can be the same or different. When the rotation direction is the same, coarse particles are pulverized, and when the rotation direction is different, fine particles are pulverized.

[0029] Briefly explain the relationship between centrifugal force, rotation speed, linear speed and rotation radius; centrifugal force F = mv*v / r, which can also be expressed as F = mω*ω*r. At the same rotation speed, the greater the mass, the greater the centrifugal force, the greater the radius, the greater the centrifugal force, and the faster the linear speed, the greater the centrifugal force. Conversely, if the mass and linear speed remain unchanged, the larger the radius, the smaller the centrifugal force. Centrifugal force is a force that moves a rotating object away from the center of rotation. For a rotating object, a large mass, a fast rotation speed, and a fast linear speed will increase the centrifugal force. Similarly, if the mass and speed remain unchanged, the larger the rotation radius, the smaller the centrifugal force, and the smaller the radius, the greater the centrifugal force.

[0030] Therefore, in the double cone (note: the middle part is cylindrical) crusher described in the present invention, the fine particles on the same vertical end face are close to the rotation center, and the coarse particles are far away from the rotation center. There is also a special shape of the present invention in which the coarse particles on the same horizontal cylindrical surface are in the small cone section, and the relatively fine particles are in the large cone section. The special structural design of the present invention is combined with the centrifugal force principle and the cyclone principle. The centrifugal force change is a curve. The material entering the crushing chamber is initially in a state of maximum centrifugal force due to its large mass but small rotation radius. As the crushed material moves toward the large diameter cone, the mass factor is greater than the radius factor, and the centrifugal force becomes larger. After the crushing reaches a certain fineness, the radius factor is large and the mass factor is equal to the relative centrifugal force. The smaller the relative centrifugal force becomes. In this functional crushing process, the finer the particles are, the further forward they move and the closer they are to the rotation axis. At the same time, the center of the cyclone is a negative pressure area (forming a suction force toward the small diameter cone). This suction force, cyclone and centrifugal action form a cyclic crushing of the particles in the crushing area.

[0031] When the motor drives the grinding wheel to rotate, a special spiral wind is formed from the inside to the outside. At the beginning, the spiral diameter of this wind is small and the wind line speed is slow. As the diameter of the grinding wheel increases, the spiral wind diameter also increases, and the wind line speed also increases. This spiral wind brings the material into the grinding space, where the material is hit, sheared and pulverized by the first grinding wheel and collides with each other (and the collision with the inner wall of the grinding chamber caused by the centrifugal force), and the grinding process is completed. The material with large centrifugal force (superior to the weight of the material itself) rotates and collides with the inner wall of the grinding chamber. At the same time, the material moves toward the second grinding wheel while being crushed by the action of the inner wall slope and the grinding wheel slope and the spiral wind thrust. There is also the spiral cyclone formed at the grinding wheel cone and the grinding chamber cone, which causes the negative pressure area to form near the rotation axis. In the process of moving toward the large diameter end face of the cone, the particles near the central axis are sucked back to the small diameter cone direction. The particles moving toward the small diameter cone end face are repeatedly crushed under the action of spiral wind, centrifugal force and grinding wheel collision, and the particles become finer.

[0032] It is further configured that a fixed plate 10 and a slide rail 11 are fixed on the frame 1, the first crushing system 2 penetrates the fixed plate 10 and is fixedly connected to the frame 1 through the fixed plate 10, a sliding plate 12 is slidably matched on the slide rail 11, the second crushing system 3 penetrates the sliding plate 12 and is slidably connected to the frame 1 through the sliding plate 12, and the second crushing system 3 slides reciprocatingly along the axial direction of the second crushing wheel 8.

[0033] The beneficial effects of this arrangement are as follows: the first crushing system is fixedly installed through a fixed plate, and the second crushing system is slidable through the cooperation of a sliding plate and a slide rail, which facilitates the adjustment of the size of the crushing space between the first crushing wheel and the second crushing wheel, thereby adjusting the coarseness of the crushed particles. According to aerodynamics, under the same conditions, as long as the volume in the crushing chamber changes, the fineness will change, because the volume change brings about a change in air pressure, and the air pressure change makes the airflow rotation speed relatively slow, and the slow airflow rotation speed makes the particles coarser.

[0034] It is further configured that the ends of the first crushing wheel 6 and the second crushing wheel 8 that are close to each other are both cylinders, and the ends that are away from each other are both truncated cones. The crushing chamber 4 is provided with a cylindrical section 13 and a truncated cone section 14 that are compatible with the first crushing wheel 6. The truncated cone section 14 is fixedly connected to the fixed plate 10. The sliding plate 12 is provided with a discharge chamber 15 at a position corresponding to the second crushing wheel 8. A discharge ring 16 is clamped at the end of the discharge chamber 15. The discharge ring 16 surrounds the outer circumference of the second crushing wheel 8, and the inner wall of the discharge ring 16 is provided with an inclined cone surface 17 that is compatible with the second crushing wheel 8. The second crushing wheel 8 and the discharge ring 16 are simultaneously plug-fitted with the cylindrical section 13.

[0035] The beneficial effects of such arrangement are as follows: the discharge chamber and the second crushing wheel are plugged into the crushing chamber, and the discharge chamber and the second crushing wheel can be separated from the crushing chamber through the sliding cooperation of the sliding plate and the slide rail, so as to facilitate the cleaning of the inside of the crushing chamber.

[0036] Further configuration includes an adjusting screw 18 with a smooth rod at one end and a threaded rod at the other end, and one end of the smooth rod passes through the fixed plate 10 to form a plug-in fit, and one end of the threaded rod passes through the sliding plate 12 to form a threaded fit, and the end of the adjusting screw 18 with the thread is also connected to a hand wheel 19, and the axis of the adjusting screw 18 is parallel to the axis of the second crushing wheel 8.

[0037] The beneficial effects of such a configuration are as follows: the sliding position of the sliding plate can be stably adjusted through the adjusting screw whose axis is parallel to the axis of the second crushing wheel, that is, the position of the second crushing system can be stably adjusted, and the adjusting screw can be further conveniently rotated through the hand wheel.

[0038] It is further provided that two stoppers 20 are provided in the middle of the adjusting screw 18 , one stopper 20 is used to abut against the fixed plate 10 , and the other stopper 20 is used to abut against the sliding plate 12 .

[0039] The beneficial effect of such arrangement is as follows: when the fixed plate and the sliding plate abut against the corresponding stoppers at the same time, the distance between the first crushing wheel and the second crushing wheel is the smallest, and the crushed particles are also the finest.

[0040] Furthermore, a locking assembly 30 is provided on the sliding plate 12 , and the locking assembly 30 has a locking state for restricting the sliding of the sliding plate 12 and an unlocking state for allowing the sliding of the sliding plate 12 .

[0041] The beneficial effects of such a setting are as follows: the sliding plate can be locked or unlocked by the locking component to prevent the sliding plate from sliding due to accidental touching of the hand wheel during crushing, thereby affecting the crushing effect; the locking component can be unlocked when the position of the second crushing system needs to be adjusted.

[0042] It is further configured that a plurality of locking screws 21 are provided on the outer periphery of the crushing chamber 4, and a connecting flange 22 is also extended from the end edge of the discharge chamber 15. A plurality of U-shaped grooves 23 for the locking screws 21 to pass through are opened on the outer periphery of the connecting flange 22. One end of each locking screw 21 passing through the U-shaped groove 23 is threadedly connected with a nut 24. The locking screw 21 can be locked in the U-shaped groove 23 by the nut 24, and the crushing chamber 4 is connected to the connecting flange 22 by the locking screw 21 and the nut 24.

[0043] The beneficial effects of such a configuration are as follows: the connecting flanges of the crushing chamber and the discharge chamber can be fixedly connected together through the threaded cooperation of the locking screw and the nut; when adjusting the position of the second crushing system, the locking screw and the nut are in a loose state; after the adjusting screw is turned to adjust the position to the right position, the nuts are tightened one by one to further improve the connection strength, thereby ensuring that the crushing chamber and the discharge chamber are firmly connected during crushing.

[0044] It is further configured that a feed assembly 25 is provided at one end of the crushing chamber 4 close to the fixed plate 10, and the feed assembly 25 includes a feed pipe 26 connected to the side of the crushing chamber 4, and the side wall of the feed pipe 26 is also connected to an air intake pipe 27, and the side of the discharge chamber 15 is connected to a discharge pipe 28 whose axis is tangent to the circumference of the discharge chamber 15.

[0045] The beneficial effects of such a setting are as follows: the feed pipe of the feed assembly is used for feeding, and is also connected to an air intake pipe for air intake, which is used to provide a circulating airflow to ensure smooth movement of materials; the discharge pipe connected to the discharge chamber is used for discharging, and the inner diameter of the discharge pipe is smaller than the inner diameter of the discharge chamber, and the tangent direction must be consistent with the cyclone direction, so as to fully exert the cyclone effect during discharging.

[0046] It is further provided that a sealing ring 29 is provided between the discharge ring 16 and the pulverizing chamber 4 .

[0047] The beneficial effects of such an arrangement are as follows: the sealing effect between the discharge ring and the pulverizing chamber is increased by the sealing ring.

[0048] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A cyclone type ultrafine pulverizer, comprising a frame (1), characterized in that: The frame (1) is provided with a first pulverizing system (2), a second pulverizing system (3) and a pulverizing chamber (4); the first pulverizing system (2) and the second pulverizing system (3) are both sealed with the pulverizing chamber (4) and are distributed on both sides of the pulverizing chamber (4); the first pulverizing system (2) comprises a first motor (5) and a first pulverizing wheel (6) driven to rotate by the first motor (5); the second pulverizing system (3) comprises a second motor (7) and a second pulverizing wheel (8) driven to rotate by the second motor (7); the first pulverizing wheel (6) and the second pulverizing wheel (8) are coaxially and symmetrically arranged in the pulverizing chamber (4); a pulverizing space (9) is formed between the first pulverizing wheel (6) and the second pulverizing wheel (8).

2. The cyclone type ultrafine pulverizer according to claim 1, characterized in that: A fixed plate (10) and a slide rail (11) are fixed on the frame (1); the first crushing system (2) passes through the fixed plate (10) and is fixedly connected to the frame (1) via the fixed plate (10); a sliding plate (12) is slidably matched on the slide rail (11); the second crushing system (3) passes through the sliding plate (12) and is slidably connected to the frame (1) via the sliding plate (12); and the second crushing system (3) reciprocates along the axial direction of the second crushing wheel (8).

3. The cyclone type ultrafine pulverizer according to claim 2, characterized in that: The ends of the first crushing wheel (6) and the second crushing wheel (8) that are close to each other are both cylinders, and the ends that are away from each other are both truncated cones. The crushing chamber (4) is provided with a cylindrical section (13) and a truncated cone section (14) that are compatible with the first crushing wheel (6). The truncated cone section (14) is fixedly connected to the fixed plate (10). The sliding plate (12) is provided with a discharge chamber (15) at a position corresponding to the second crushing wheel (8). A discharge ring (16) is clamped at the end of the discharge chamber (15). The discharge ring (16) surrounds the outer circumference of the second crushing wheel (8), and the inner wall of the discharge ring (16) is provided with an inclined cone surface (17) that is compatible with the second crushing wheel (8). The second crushing wheel (8) and the discharge ring (16) are simultaneously plug-fitted with the cylindrical section (13).

4. The cyclone type ultrafine pulverizer according to claim 2, characterized in that: It also includes an adjusting screw (18) with a smooth rod at one end and a threaded rod at the other end, wherein one end of the smooth rod passes through the fixed plate (10) to form a plug-in fit, and the other end of the threaded rod passes through the sliding plate (12) to form a threaded fit, and the end of the adjusting screw (18) with the thread is also connected to a hand wheel (19), and the axis of the adjusting screw (18) is parallel to the axis of the second crushing wheel (8).

5. The cyclone type ultrafine pulverizer according to claim 4, characterized in that: Two stoppers (20) are provided in the middle of the adjusting screw rod (18), one stopper (20) is used to abut against the fixed plate (10), and the other stopper (20) is used to abut against the sliding plate (12).

6. The cyclone type ultrafine pulverizer according to claim 2, characterized in that: The sliding plate (12) is also provided with a locking assembly (30), and the locking assembly (30) has a locking state for restricting the sliding of the sliding plate (12) and an unlocking state for allowing the sliding of the sliding plate (12).

7. The cyclone type ultrafine pulverizer according to claim 3, characterized in that: A plurality of locking screws (21) are arranged on the outer periphery of the pulverizing chamber (4); a connecting flange (22) is further extended from the end edge of the discharge chamber (15); a plurality of U-shaped grooves (23) for the locking screws (21) to pass through are opened on the outer periphery of the connecting flange (22); one end of each locking screw (21) passing through the U-shaped groove (23) is threadedly connected to a nut (24); the locking screw (21) can be locked in the U-shaped groove (23) by the nut (24); and the pulverizing chamber (4) is connected to the connecting flange (22) by the locking screw (21) and the nut (24) in cooperation.

8. The cyclone type ultrafine pulverizer according to claim 3, characterized in that: A feed assembly (25) is provided at one end of the pulverizing chamber (4) close to the fixed plate (10), and the feed assembly (25) comprises a feed pipe (26) connected to the side of the pulverizing chamber (4), and the side wall of the feed pipe (26) is also connected to an air intake pipe (27), and the side of the discharge chamber (15) is connected to a discharge pipe (28) whose axis is tangent to the circumference of the discharge chamber (15).

9. The cyclone type ultrafine pulverizer according to claim 3, characterized in that: A sealing ring (29) is provided between the discharge ring (16) and the pulverizing chamber (4).

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