Cyclone ultrafine grinder

Abstract

The utility model 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 are 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 grinder, several grinding principles are combined together, and grinding is achieved through cyclone and impact generated between the pair of grinding wheels rotating independently, so that the grinding efficiency is improved, and the grinding efficiency is improved. The technical production equipment disclosed by the utility model has the advantages of wide application range, low cost and environmental protection.

Description

Technical Field

[0001] The utility model relates to the technical field of pulverizing equipment, in particular to a cyclone-type ultrafine pulverizer. Background Art

[0002] An ultrafine pulverizer utilizes air separation, heavy-pressure grinding, and shearing to achieve ultrafine grinding of dry materials. It consists of a cylindrical pulverizing chamber, grinding wheels, grinding rails, a fan, and a material collection system. Material enters the cylindrical pulverizing chamber through a feed port and is crushed by the grinding wheels, which move in a circular motion along the grinding rails. The crushed material is then carried out of the pulverizing chamber by the negative pressure airflow created by the fan and into the material collection system. The material is filtered through filter bags, the air is expelled, and the material and dust are collected, completing the pulverization process.

[0003] At present, the most popular screenless (ultrafine grinding is difficult to achieve with screens) 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, they all have 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 a superfine grinder that can solve the above problems. Utility Model Content

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

[0006] The technical solution adopted by the present utility model is as follows: a cyclone-type ultrafine pulverizer includes a frame, on which a first pulverizing system, a second pulverizing system and a pulverizing chamber are provided, 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 includes a first motor and a first pulverizing wheel driven to rotate by the first motor, the second pulverizing system includes 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 passes through the fixed plate and is fixedly connected to the frame through the fixed plate, a sliding plate is slidably fitted on the slide rail, the second crushing system passes through 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 and second crushing wheels that are close to each other are both cylindrical, and the ends that are away from each other are both conical. The crushing chamber is provided with a cylindrical section and a conical section that are compatible with the first crushing wheel. The conical 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 oblique cone surface that is compatible with the second crushing wheel. The second crushing wheel and the discharge ring are simultaneously plugged into 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, and one end of the smooth rod passes through the fixed plate to form a plug-in fit, and one end of the threaded rod passes through 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 provided in the middle of the adjusting screw, 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 further 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] The outer periphery of the crushing chamber is provided with a plurality of locking screws, and the end edge of the discharge chamber is also extended with a connecting flange. The outer periphery of the connecting flange is provided with a plurality of U-shaped grooves for the locking screws to pass through. One end of each locking screw passing through the U-shaped groove is threadedly connected with a nut, and the locking screw can be locked in the U-shaped groove by the nut. The crushing chamber is connected to the connecting flange through the locking screw and the nut.

[0013] A feeding assembly is provided at one end of the crushing chamber close to the fixed plate, and the feeding assembly includes a feeding pipe connected to the side of the crushing chamber, the side wall of the feeding 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 provided 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 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 effects (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 following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 fall within the scope of the present invention.

[0017] Figure 1 This is a schematic structural diagram of the utility model cyclone type ultrafine pulverizer;

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

[0019] Figure 3 for Figure 2 A partial enlarged schematic diagram of point A in the middle;

[0020] Figure 4 This is a structural diagram of the utility model from another perspective;

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

[0022] Figure 6 This is a cross-sectional schematic diagram of the discharge chamber of the utility model;

[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-handwheel, 20-stopper, 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 purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in further 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 the purpose of distinguishing two non-identical entities or non-identical parameters with the same name. 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. Subsequent embodiments will not explain this one by one.

[0026] The directional and positional terms used in this invention, such as "upper," "lower," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are used solely to refer to the directions or positions in the accompanying drawings. Therefore, the directional and positional terms used are intended to illustrate and facilitate understanding of this invention and are not intended to limit the scope of protection of this invention.

[0027] like Figures 1 to 6 As shown in the figure, an embodiment of the present utility model is a cyclone 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 this arrangement are as follows: the present invention is a cyclone-type ultrafine pulverizer that combines several pulverization principles. The pulverization is achieved through the cyclone and impact generated between a pair of independently rotating pulverizing wheels. It has both airflow pulverization effects (with spiral cyclonic airflow) and mechanical impact, shearing, friction, etc., which is a combination of the special features of several pulverizers. Therefore, the technical production equipment of the present invention has the advantages of wide application range, low cost, and environmental protection. Moreover, the rotation directions of the first pulverizing wheel and the second pulverizing wheel can be the same or different. When the rotation directions are the same, coarse particles are crushed, and when the rotation directions are different, fine particles are crushed.

[0029] Let's briefly explain the relationship between centrifugal force, rotational speed, linear velocity, and rotational radius. Centrifugal force F = mv*v / r, which can also be expressed as F = mω*ω*r. At the same rotational speed, the greater the mass, the greater the centrifugal force, the larger the radius, and the faster the linear velocity. Conversely, if the mass and linear velocity remain unchanged, the larger the radius, the relatively smaller the centrifugal force. Centrifugal force is a force that moves a rotating object away from the center of rotation. For a rotating object, large mass, fast rotational speed, and fast linear velocity all 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, fine particles are close to the center of rotation on the same vertical end surface, while coarse particles are far away from the center of rotation. In addition, the special shape of the present invention is that coarse particles are in the small cone section on the same horizontal cylindrical surface, while relatively fine particles are in the large cone section. The special structural design of the present invention combines the principles of centrifugal force and cyclone, and the centrifugal force changes in a curved shape. The material entering the crushing chamber is initially large in mass, but the rotation radius is small, so the corresponding centrifugal force is not necessarily at its maximum state. 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 material is crushed to a certain fineness, the radius factor is large and the mass factor is equal, and the relative centrifugal force becomes smaller. In this functional crushing process, the finer the particles, 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 zone (forming a suction force toward the small-diameter cone). This suction, cyclone, and centrifugal action form a cyclic crushing of the particles in the crushing zone.

[0031] When the motor drives the grinding wheel, a unique spiral wind forms from the inside out. Initially, this wind has a small diameter and a slow linear velocity. As the diameter of the grinding wheel increases, the diameter and linear velocity of the spiral wind also increase. This spiral wind carries the material into the grinding chamber, where it is impacted and sheared by the first grinding wheel, and pulverized by collisions between the crushed particles (as well as collisions with the inner wall of the grinding chamber caused by centrifugal force). The crushing process is completed as the material with high centrifugal force (exceeding its own weight) rotates and strikes the inner wall of the grinding chamber. Simultaneously, the inclined surface of the inner wall and the grinding wheel, as well as the thrust of the spiral wind, crush the material and move it toward the second grinding wheel. The spiral cyclone formed by the grinding wheel cone and the inner cone of the grinding chamber creates a negative pressure zone near the rotation axis. This characteristic particle movement toward the larger diameter end of the cone causes particles near the center axis to be drawn back toward the smaller diameter cone. Particles moving toward the smaller diameter end of the cone are repeatedly crushed by the spiral wind, centrifugal force, and impact with the grinding wheel, and the particle size becomes 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 passes through the fixed plate 10 and is fixedly connected to the frame 1 through the fixed plate 10, a sliding plate 12 is slidably fitted on the slide rail 11, the second crushing system 3 passes through the sliding plate 12 and is slidably connected to the frame 1 through the sliding plate 12, and the second crushing system 3 slides back and forth along the axial direction of the second crushing wheel 8.

[0033] This arrangement has the following beneficial effects: the first pulverizing system is fixed via a fixed plate, while the second pulverizing system is slidable via a sliding plate and rails, allowing for easy adjustment of the pulverizing space between the first and second pulverizing wheels, thereby adjusting the coarseness of the pulverized particles. According to aerodynamics, under the same conditions, any change in the volume within the pulverizing chamber will result in a change in fineness. This is because volume changes cause changes in air pressure, which in turn slows the airflow, and slowing airflow speeds leads to coarser particles.

[0034] It is further provided that the ends of the first crushing wheel 6 and the second crushing wheel 8 that are close to each other are both cylindrical, and the ends that are away from each other are both conical, the crushing chamber 4 is provided with a cylindrical section 13 and a conical section 14 that are adapted to the first crushing wheel 6, the conical section 14 is fixedly connected to the fixed plate 10, the sliding plate 12 is provided with a discharge chamber 15 at the position corresponding to the second crushing wheel 8, the end of the discharge chamber 15 is clamped with a discharge ring 16, 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 oblique cone surface 17 that is adapted to the second crushing wheel 8, the second crushing wheel 8 and the discharge ring 16 are simultaneously plugged into the cylindrical section 13.

[0035] The beneficial effects of this 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, making it easier to clean the inside of the crushing chamber.

[0036] The 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. The end of the adjusting screw 18 with the thread is also connected to a handwheel 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 this arrangement are as follows: the sliding position of the sliding plate, that is, the position of the second crushing system can be stably adjusted by the adjusting screw whose axis is parallel to the axis of the second crushing wheel, and the adjusting screw can be further conveniently rotated by 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 this 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 . 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 this arrangement are as follows: the sliding plate can be locked or unlocked by the locking assembly to prevent the sliding plate from sliding due to accidental contact with the hand wheel during crushing, thereby affecting the crushing effect; the locking assembly can be unlocked when the position of the second crushing system needs to be adjusted.

[0042] It is further provided 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 through the locking screw 21 and the nut 24.

[0043] The beneficial effects of this arrangement 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 adjusted to the right position, the nuts are tightened one by one to further improve the connection strength and ensure that the crushing chamber and the discharge chamber are firmly connected during crushing.

[0044] It is further provided that a feeding assembly 25 is provided at one end of the crushing chamber 4 close to the fixed plate 10, and the feeding assembly 25 includes a feeding pipe 26 connected to the side of the crushing chamber 4, and the side wall of the feeding 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 this arrangement 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 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 tangential 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 crushing 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 a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by 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 crushing system (2), a second crushing system (3) and a crushing chamber (4); the first crushing system (2) and the second crushing system (3) are both sealed with the crushing chamber (4) and are distributed on both sides of the crushing chamber (4); the first crushing system (2) includes a first motor (5) and a first crushing wheel (6) driven to rotate by the first motor (5); the second crushing system (3) includes a second motor (7) and a second crushing wheel (8) driven to rotate by the second motor (7); the first crushing wheel (6) and the second crushing wheel (8) are coaxially and symmetrically arranged in the crushing chamber (4); a crushing space (9) is formed between the first crushing wheel (6) and the second crushing 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) through 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) through the sliding plate (12); and the second crushing system (3) slides back and forth 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 cylindrical, and the ends that are away from each other are both frustums. The crushing chamber (4) is provided with a cylindrical section (13) and a frustum section (14) that are compatible with the first crushing wheel (6). The frustum 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 oblique cone surface (17) that is compatible with the second crushing wheel (8). The second crushing wheel (8) and the discharge ring (16) are simultaneously plugged into the cylindrical section (13).

4. The cyclone type ultrafine pulverizer according to claim 2, characterized in that: The utility model 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 threaded end 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 (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: The outer periphery of the pulverizing chamber (4) is provided with a plurality of locking screws (21), and the end edge of the discharge chamber (15) is further extended with a connecting flange (22). The outer periphery of the connecting flange (22) is provided with a plurality of U-shaped grooves (23) for the locking screws (21) to pass through. 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). The pulverizing chamber (4) is connected to the connecting flange (22) through the locking screw (21) and the nut (24).

8. The cyclone type ultrafine pulverizer according to claim 3, characterized in that: A feeding assembly (25) is provided at one end of the crushing chamber (4) close to the fixed plate (10), and the feeding assembly (25) includes a feeding pipe (26) connected to the side of the crushing chamber (4), and the side wall of the feeding 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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