CN221907408U - A gas circulation pulverizer - Google Patents

Abstract

The utility model belongs to the technical field of crushers, and particularly discloses an air circulation type crusher. The air circulation type pulverizer comprises an assembly table, a cylinder body, a first rotating shaft, a second rotating shaft, a pulverizing disc, a classification wheel assembly and a guide cover; the cylinder is arranged on the assembly table, and a cavity is formed in the cylinder; the cylinder is provided with a feeding pipe and a discharging pipe, and the discharging pipe is also externally connected with a material sucking device; one end of the first rotating shaft is connected with an output shaft of the first motor, and the other end of the first rotating shaft extends into the cavity; the crushing disc is arranged at the other end of the first rotating shaft, the crushing hammer is arranged at the top end of the crushing disc, the guide vane is arranged at the bottom end of the crushing disc, and a gap is reserved between the crushing disc and the cylinder body; the grading wheel assembly separates the discharge pipes; a pod is disposed in the chamber and disposed about the classifying wheel assembly. This air circulation formula rubbing crusher can make the material at the indoor circulation flow of cavity through guide vane, reduces the dead angle department that the material falls into in the cavity, improves crushing efficiency.

Description

A gas circulation type pulverizer

Technical Field

The utility model belongs to the technical field of pulverizers, and in particular relates to an air circulation type pulverizer.

Background Art

Pulverizers are often used to crush materials. With the rapid development of new energy materials, the requirements for the purity and particle size of crushed materials are becoming higher and higher.

When a traditional pulverizer pulverizes materials, materials with larger particle sizes are easy to enter the gaps between components or the dead corners inside the pulverizer, resulting in reduced pulverization efficiency and even malfunction of the pulverizer. In addition, traditional air flow pulverizers only rely on the collision between materials and between materials and the cylinder wall to pulverize, and the pulverization efficiency is low.

In addition, when the traditional classifying wheel assembly screens materials, there is often a gap between the rotating classifying wheel assembly and the cylinder wall, which makes it easy for material particles to enter the gap, not only making it easy for materials that do not meet the required particle size to enter, but also making it easy for the classifying wheel assembly to not operate normally.

Utility Model Content

The utility model aims to provide an air circulation type pulverizer to realize material circulation inside the pulverizer and improve pulverizing efficiency.

In order to achieve the above purpose, the utility model provides the following technical solutions:

An air circulation type pulverizer comprises an assembly table, a cylinder, a first rotating shaft, a second rotating shaft, a pulverizing disc, a grading wheel assembly and a guide cover;

The cylinder is arranged on the assembly table, and a chamber is arranged inside the cylinder; a feed pipe and a discharge pipe are arranged on the side wall of the cylinder, and both the feed pipe and the discharge pipe are connected to the chamber, wherein the discharge pipe is also externally connected to a suction device;

A first motor is arranged on the assembly table, one end of the first rotating shaft is connected to the output shaft of the first motor, and the other end of the first rotating shaft extends into the chamber;

The crushing disc is arranged on the other end of the first rotating shaft, the crushing disc is arranged in the horizontal direction, a crushing hammer is arranged at the top of the crushing disc, a guide blade is arranged at the bottom of the crushing disc, and a gap is left between the crushing disc and the cylinder;

The second rotating shaft is disposed in the chamber, and one end of the second rotating shaft is connected to the output shaft of the second motor;

The grading wheel assembly is disposed on the other end of the second rotating shaft, and the grading wheel assembly separates the discharge pipe;

The deflector is disposed in the chamber, and the deflector is arranged around the classifying wheel assembly;

An air sealing assembly is arranged between the grading wheel assembly and the discharge pipe, and the air sealing assembly is used to seal the gap between the grading wheel assembly and the discharge pipe.

Preferably, the airtight sealing assembly comprises an upper connecting plate, a lower connecting plate and a double-layer partition plate;

The upper connecting plate is connected to the top end of the cylinder, a double-layer partition is arranged between the upper connecting plate and the lower connecting plate, the upper end of the double-layer partition is connected to the upper connecting plate, and the lower connecting plate is connected to the lower end of the double-layer partition;

A ventilation cavity is arranged between the double-layer partitions, an upper ventilation hole is arranged on the upper connecting plate, one side of the upper ventilation hole is connected to the outside of the cylinder, and the other side of the upper ventilation hole is connected to the ventilation cavity; a lower ventilation hole is arranged on the lower connecting plate, one side of the lower ventilation hole is connected to the ventilation cavity, and the other side of the lower ventilation hole is connected to the gap between the lower connecting plate and the grading wheel assembly.

Preferably, a pulverizing disk connecting sleeve is provided in the middle of the pulverizing disk, and the pulverizing disk is connected to the first rotating shaft through the pulverizing disk connecting sleeve;

A plurality of crushing hammers are arranged circumferentially along the axis of the crushing disk, and the crushing ends of the crushing hammers are arranged at the gap between the crushing disk and the cylinder wall of the lower cylinder;

A plurality of guide blades are arranged circumferentially along the axis of the pulverizing disk, and a preset interval is set between adjacent guide blades.

Preferably, a support assembly is disposed on the outer side of the first rotating shaft, and the support assembly includes a support cylinder, a bearing, an upper pressure cover and a lower pressure cover;

The support cylinder is connected to the assembly table, the upper pressure cover is connected to the top of the support cylinder, the upper end of the first rotating shaft passes through the upper pressure cover and extends into the chamber; the lower pressure cover is connected to the bottom end of the support cylinder, the lower end of the first rotating shaft passes through the lower pressure cover and extends to the outside of the cylinder;

A bearing is arranged inside the supporting cylinder, and the first rotating shaft is assembled on the bearing.

Preferably, the first rotating shaft is also provided with a heat dissipation component, and the heat dissipation component includes a fan plate and heat dissipation blades;

The fan plate is provided with an assembly hole, and the fan plate is assembled to the first rotating shaft through the assembly hole;

The heat dissipation blades are arranged on the fan plate, and a plurality of heat dissipation blades are arranged circumferentially along the axis of the fan plate.

Preferably, the classifying wheel assembly comprises an upper impeller disc, impeller blades, a lower impeller disc and a classifying wheel connecting sleeve;

A grading wheel connecting sleeve is arranged in the middle position of the lower impeller disc, and the grading wheel connecting sleeve is connected to the second rotating shaft;

A plurality of impeller blades are arranged between the upper impeller disc and the lower impeller disc, and the plurality of impeller blades are arranged circumferentially along the axis of the lower impeller disc, and a feed gap is left between adjacent impeller blades.

Preferably, a driving pulley is provided on the output shaft of the first motor, a driven pulley is provided on the first rotating shaft, and the driven pulley is arranged on the outside of the cylinder, and the driving pulley and the driven pulley are connected by a belt.

Preferably, a wear-resistant layer is provided on the cylinder wall of the cylinder, and a protrusion is provided on the wear-resistant layer.

Preferably, the second rotating shaft is arranged in the chamber along the vertical direction, the second motor is arranged outside the top end of the cylinder, and the second motor and the second rotating shaft are connected through a coupling.

Preferably, a feed port is provided at the lower end of the side wall of the cylinder, and the feed port is arranged below the feed pipe, and the feed port is connected to the chamber;

A guide plate is arranged below the guide blade, and the guide plate is an annular structure;

The first rotating shaft passes through the middle position of the guide plate, a gap is left between the inner ring of the annular guide plate and the first rotating shaft, and a gap is left between the top end of the guide plate and the bottom end of the guide blade.

Compared with the prior art, the utility model has the following beneficial effects:

The gas circulation type pulverizer of the utility model can make the materials circulate in the chamber through the rotating guide blades, reduce the materials falling into the dead corners in the chamber, and improve the pulverizing efficiency.

In addition, the air sealing assembly seals the gap between the discharge pipe and the grading wheel assembly through airflow, which can reduce the discharge of materials that do not meet the required particle size from the discharge pipe and improve the screening accuracy.

In addition, the gas circulation type pulverizer also has the function of secondary pulverization. While pulverizing the previously unpulverized materials, the gas circulation type pulverizer can also pulverize the materials that have been pulverized and do not meet the required particle size again, thereby improving the pulverization efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a perspective view of an air circulation type pulverizer according to an embodiment of the present utility model;

FIG2 is a cross-sectional view of a gas circulation type pulverizer in an embodiment of the present utility model;

FIG3 is a partial enlarged view of point A in FIG2;

FIG4 is a second cross-sectional view of an air circulation type pulverizer in an embodiment of the utility model;

FIG5 is a third cross-sectional view of an air circulation type pulverizer in an embodiment of the utility model;

FIG6 is a sectional view 4 of an air circulation type pulverizer in an embodiment of the utility model;

FIG7 is a cross-sectional view of a gas circulation type pulverizer according to an embodiment of the present utility model;

1-assembly table, 2-cylinder, 3-first rotating shaft, 4-second rotating shaft, 5-crushing disc, 6-grading wheel assembly, 7-flow guide cover, 8-feeding pipe, 9-discharging pipe, 10-first motor, 11-second motor, 12-gas sealing assembly, 13-chamber, 14-support assembly, 15-heat dissipation assembly, 16-feeding port, 17-coupling, 18-coupling housing, 19-wear-resistant layer, 20-driving pulley, 21-driven pulley, 22-belt, 23-flow guide plate, 24-connecting rod; 201-upper cylinder, 202-lower cylinder; 501 -crushing hammer, 502-guide blade, 503-crushing disc connecting sleeve; 1201-upper connecting plate, 1202-lower connecting plate, 1203-double-layer partition, 1204-ventilation chamber, 1205-upper vent, 1206-lower vent; 601-upper impeller disc, 602-impeller blade, 603-lower impeller disc, 604-classifying wheel connecting sleeve; 1301-upper chamber, 1302-lower chamber; 1401-support cylinder, 1402-bearing, 1403-upper pressure cover, 1404-lower pressure cover; 1501-fan plate, 1502-heat dissipation blade.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Please refer to FIGS. 1 to 7 , the present embodiment provides an air circulation type pulverizer, including an assembly table 1 , a cylinder 2 , a first rotating shaft 3 , a second rotating shaft 4 , a pulverizing disc 5 , a grading wheel assembly 6 and a guide cover 7 .

The cylinder 2 is arranged on the assembly table 1, and a chamber 13 is arranged inside the cylinder 2. An inlet pipe 8 and an outlet pipe 9 are arranged on the side wall of the cylinder 2, and the inlet pipe 8 and the outlet pipe 9 are both connected to the chamber 13, wherein the outlet pipe 9 is externally connected to a suction device, and the suction device can generate negative pressure, thereby sucking away the material screened by the grading wheel assembly 6.

In this embodiment, the cylinder 2 includes a lower cylinder 202 and an upper cylinder 201, both of which are cylindrical structures with openings at both ends, and the lower cylinder 202 and the upper cylinder 201 are arranged in sequence from bottom to top along the vertical direction, and the cross-sectional area of the lower cylinder 202 is greater than the cross-sectional area of the upper cylinder 201; the bottom end of the lower cylinder 202 is connected to the table surface of the assembly table 1 through a flange, and the lower cylinder 202 is connected to the upper cylinder 201 through a flange. The chamber 13 includes a lower chamber 1302 and an upper chamber 1301, and the lower chamber 1302 and the upper chamber 1301 are connected; wherein the lower chamber 1302 is arranged at the lower cylinder 202, and the upper chamber 1301 is arranged at the upper cylinder 201.

Furthermore, the feed pipe 8 is arranged at the lower cylinder 202 , and the feed pipe 8 is communicated with the lower chamber 1302 ; the discharge pipe 9 is arranged at the upper cylinder 201 , and the discharge pipe 9 is communicated with the upper chamber 1301 .

A first motor 10 is disposed on the assembly table 1 , one end of the first rotating shaft 3 is connected to the output shaft of the first motor 10 , and the other end of the first rotating shaft 3 extends into the lower part of the chamber 13 .

In this embodiment, the first rotating shaft 3 passes through the bottom end of the assembly table 1 from the outside of the lower cylinder 202 and extends into the interior of the lower chamber 1302. The first rotating shaft 3 is arranged in the vertical direction, one end (lower end) of the first rotating shaft 3 is arranged outside the lower cylinder 202, and the other end (upper end) of the first rotating shaft 3 is arranged in the lower chamber 1302.

Furthermore, a support assembly 14 is disposed outside the first rotating shaft 3. The support assembly 14 includes a support cylinder 1401, a bearing 1402, an upper pressure cover 1403 and a lower pressure cover 1404.

Specifically, a support cylinder 1401 is arranged on the outer side of the first rotating shaft 3, and the side wall of the support cylinder 1401 is connected to the table top of the assembly table 1; the upper pressure cover 1403 is connected to the top of the support cylinder 1401, and the upper end of the first rotating shaft 3 passes through the upper pressure cover 1403 and extends to the air guide cover 7; the lower pressure cover 1404 is connected to the bottom end of the support cylinder 1401, and the lower end of the first rotating shaft 3 passes through the lower pressure cover 1404 and extends to the outside of the lower cylinder 202.

A bearing 1402 is provided inside the support cylinder 1401, and the first rotating shaft 3 is assembled on the bearing 1402. In this embodiment, bearings 1402 are provided at both the top and bottom ends of the support cylinder 1401, the upper end of the first rotating shaft 3 is assembled on the bearing 1402 at the top, and the lower end of the first rotating shaft 3 is assembled on the bearing 1402 at the bottom.

In this embodiment, a driving pulley 20 is provided on the output shaft of the first motor 10, and a driven pulley 21 is provided at the lower end of the first rotating shaft 3, and the driven pulley 21 is arranged on the outer side of the lower pressure cover 1404 (that is, the first rotating shaft 3 is located at the outer part of the lower cylinder 202), and the driving pulley 20 and the driven pulley 21 are connected by a belt 22, and the first motor 10 drives the first rotating shaft 3 to rotate by means of the belt 22.

The first rotating shaft 3 is also provided with a heat dissipation component 15, which is used to dissipate the friction heat generated during the operation of the first rotating shaft 3. In this embodiment, the heat dissipation component 15 is arranged on the outer side of the lower pressure cover 1404.

Specifically, the heat dissipation assembly 15 includes a fan plate 1501 and heat dissipation blades 1502. The fan plate 1501 is provided with an assembly hole, and the fan plate 1501 is assembled on the first rotating shaft 3 through the assembly hole, and the fan plate 1501 is arranged between the outer side of the lower pressure cover 1404 and the driven pulley 21. The heat dissipation blades 1502 are arranged on the fan plate 1501, and a plurality of heat dissipation blades 1502 are arranged circumferentially along the axis of the fan plate 1501.

When the first rotating shaft 3 rotates, the fan plate 1501 and the heat dissipation blades 1502 rotate synchronously with the driving shaft, and the rotating heat dissipation blades 1502 can dissipate the friction heat generated during the operation of the first rotating shaft 3 .

The pulverizing disk 5 is connected to the upper end of the first rotating shaft 3 , a pulverizing hammer 501 is provided at the top end of the pulverizing disk 5 , a guide blade 502 is provided at the bottom end of the pulverizing disk 5 , and a gap is left between the pulverizing disk 5 and the cylinder 2 .

In this embodiment, the pulverizing disk 5 is arranged in the horizontal direction, and the pulverizing disk 5 is arranged in the lower chamber 1302 , and a gap is left between the pulverizing disk 5 and the lower cylinder 202 , and the gap is defined as a gap a.

Specifically, the pulverizing disk 5 is a disc-shaped structure, and a pulverizing disk connecting sleeve 503 is provided at the middle position of the pulverizing disk 5. The pulverizing disk 5 is connected to the first rotating shaft 3 through the pulverizing disk connecting sleeve 503, and the first rotating shaft 3 can drive the pulverizing disk 5 to rotate.

Several crushing hammers 501 are arranged circumferentially along the axis of the crushing disk 5, and the crushing ends of the crushing hammers 501 are arranged at the gap a between the crushing disk 5 and the cylinder wall of the lower cylinder 202, so that the crushing ends of the crushing hammers 501 can better crush the materials moving to the gap a.

A plurality of guide blades 502 are arranged circumferentially along the axis of the pulverizing disk 5 , and a preset interval is provided between adjacent guide blades 502 .

When the crushing disc 5 rotates, the rotating guide blades 502 can generate an upward airflow, which is ejected upward through the gap a. The upward airflow can reduce the material from falling into the dead corner of the lower cylinder 202. At the same time, the upward airflow can promote the upward flow of the material, reduce the situation of insufficient material circulation, and thus improve the crushing efficiency of the crushing hammer 501.

The second rotating shaft 4 is disposed in the upper chamber 1301 , one end of the second rotating shaft 4 is connected to the output shaft of the second motor 11 , and the grading wheel assembly 6 is connected to the other end of the second rotating shaft 4 .

In this embodiment, the second rotating shaft 4 is arranged in the upper chamber 1301, and the second rotating shaft 4 is arranged in the vertical direction, one end (lower end) of the second rotating shaft 4 extends into the lower chamber 1302, and the other end (upper end) of the second rotating shaft 4 extends to the outside of the upper cylinder 201.

Furthermore, a coupling housing 18 is provided on the outside of the top of the upper cylinder 201, and the coupling housing 18 is arranged in the vertical direction. One end (bottom end) of the coupling housing 18 is connected to the top of the upper cylinder 201, and the motor seat of the second motor 11 is connected to the other end (upper end) of the coupling housing 18. The output shaft of the second motor 11 is connected to the upper end of the second rotating shaft 4 through the coupling 17, and the coupling 17 is arranged inside the coupling housing 18.

The grading wheel assembly 6 is disposed at the lower end of the second rotating shaft 4 , and the grading wheel assembly 6 separates the discharge pipe 9 .

Specifically, the classifying wheel assembly 6 includes an upper impeller disc 601, impeller blades 602, a lower impeller disc 603 and a classifying wheel connecting sleeve 604. A classifying wheel connecting sleeve 604 is arranged in the middle position of the lower impeller disc 603, and the classifying wheel connecting sleeve 604 is connected to the second rotating shaft 4, and the second rotating shaft 4 can drive the lower impeller disc 603 to rotate. A plurality of impeller blades 602 are arranged between the upper impeller disc 601 and the lower impeller disc 603, the top end of the impeller blade 602 is connected to the bottom end of the upper impeller disc 601, the bottom end of the impeller blade 602 is connected to the top end of the lower impeller disc 603, and the impeller blade 602 extends from the edge of the lower impeller disc 603 to the center of the circle; a plurality of impeller blades 602 are arranged circumferentially along the axis of the lower impeller disc 603, and a feed gap is left between adjacent impeller blades 602.

When the second rotating shaft 4 drives the impeller blades 602 to rotate at high speed, the rotating airflow in the upper chamber 1301 has component speeds in the axial and circumferential directions. At the same time, the suction device outside the discharge pipe 9 generates negative pressure, and the material particles that meet the required particle size after crushing can be "dragged" by the negative pressure through the feed gap between the impeller blades 602, and the suction device sucks away the separated material particles.

When the operator needs material particles of different particle sizes, the operator can adjust the rotation speed of the second rotating shaft 4 through the second motor 11, and then change the rotation speed of the impeller blade 602 to change the screening and classification standard of the classification wheel assembly 6 (increasing the rotation speed of the impeller blade 602 will reduce the diameter of the separated particles). When the impeller blade 602 rotates at high speed in the upper chamber 1301, a rotating airflow will be generated at the impeller blade 602. The material particles have different inertia due to different masses. Under the action of inertial centrifugal force, graphite particles of different masses form different motion trajectories. Smaller particles will approach the impeller blade 602, and larger particles will be brought by the airflow to a trajectory far away from the impeller blade 602, thereby achieving particle classification. Material particles that meet the particle size requirements enter the discharge pipe 9 through the feed gap between the impeller blades 602 and are sucked away by the suction device; material particles that do not meet the diameter requirements are thrown to the inner wall of the guide cover 7 under the action of inertial centrifugal force, and slide down along the inner wall of the guide cover 7.

An air sealing assembly 12 is provided between the grading wheel assembly 6 and the discharge pipe 9, and the air sealing assembly 12 is used to seal the gap between the grading wheel assembly 6 and the discharge pipe 9. In this embodiment, the discharge pipe 9 is connected to the upper chamber 1301 at the upper cylinder 201, and the material can be discharged from the upper cylinder 201 and the discharge pipe 9, and the air sealing assembly 12 seals the gap between the grading wheel assembly 6 and the upper body.

Specifically, the airtight seal assembly 12 includes an upper connecting plate 1201, a lower connecting plate 1202 and a double-layer partition 1203. The upper connecting plate 1201 is connected to the top end of the lower cylinder 202, and the double-layer partition 1203 is arranged between the upper connecting plate 1201 and the lower connecting plate 1202, the upper end of the double-layer partition 1203 is connected to the upper connecting plate 1201, and the lower connecting plate 1202 is connected to the lower end of the double-layer partition 1203. A ventilation cavity 1204 is arranged between the double-layer partition plates 1203, and an upper ventilation hole 1205 is arranged on the upper connecting plate 1201, one side of the upper ventilation hole 1205 is connected to the outside of the upper cylinder 201, and the other side of the upper ventilation hole 1205 is connected to the ventilation cavity 1204; a lower ventilation hole 1206 is arranged on the lower connecting plate 1202, one side of the lower ventilation hole 1206 is connected to the ventilation cavity 1204, and the other side of the lower ventilation hole 1206 is connected to the gap between the lower connecting plate 1202 and the upper impeller disk 601.

Under the action of the suction device, the suction device generates an airflow that can suck away the grading wheel assembly 6, thereby forming a negative pressure inside the grading wheel assembly 6. At this time, the airflow outside the upper cylinder 201 can enter the gap between the lower connecting plate 1202 and the upper impeller disk 601 along the upper air vent 1205, the air cavity 1204 and the lower air vent 1206. The high-speed airflow forms an air seal, thereby preventing the material from entering the interior of the grading wheel assembly 6 through the gap between the lower connecting plate 1202 and the upper impeller disk 601, thereby improving the fineness of the material screened by the grading wheel assembly 6.

The deflector 7 is disposed in the chamber 13 and arranged around the classifying wheel assembly 6 .

In this embodiment, the air deflector 7 is a cylindrical body 2 structure with openings at both ends. The air deflector 7 is arranged in the vertical direction, and the cross-sectional area of the air deflector 7 gradually decreases from the upper opening to the lower opening.

Furthermore, the deflector 7 is arranged in the lower chamber 1302 and around the impeller blades 602 of the classifying wheel assembly 6 , and the deflector 7 is connected to the lower cylinder 202 via a connecting rod 24 .

A gap is left between the outer wall of the air guide cover 7 and the wall of the lower cylinder 202, which is defined as gap b; a gap is left between the top of the air guide cover 7 and the top of the lower cylinder 202, which is defined as gap c, a gap is left between the inner wall of the air guide cover 7 and the impeller blade 602 of the classifying wheel assembly 6, which is defined as gap d, and a gap is left between the bottom end of the air guide cover 7 and the crushing disk 5, which is defined as gap e.

A wear-resistant layer 19 is also provided on the wall of the cylinder 2, and protrusions are provided on the wear-resistant layer 19; when the material collides with the protrusions of the wear-resistant layer 19, the material can be crushed better, thereby improving the crushing efficiency.

In this embodiment, a feed port 16 is provided at the lower end of the side wall of the lower cylinder 202, and the feed port 16 is arranged below the feed pipe 8, and the feed port 16 is connected to the lower chamber 1302. The pulverizer also has the function of secondary pulverizing materials. The pulverized materials of the pulverizer will be discharged through the discharge pipe 9 and screened by the screening device. The materials that do not meet the standard particle size screened by the screening device can enter the pulverizer through the feed port 16 for secondary pulverization.

Specifically, a guide plate 23 is provided below the guide blade 502, and the guide plate 23 is connected to the cylinder wall of the lower cylinder 202; the guide plate 23 is an annular structure, and the first rotating shaft 3 passes through the middle position of the annular guide plate 23, wherein a gap is left between the inner ring of the annular guide plate 23 and the first rotating shaft 3, and the gap is defined as a gap f; a gap is left between the top of the guide plate 23 and the bottom of the guide blade 502, and the gap is defined as a gap g, and the gap g can ensure the normal rotation of the guide blade 502, and at the same time, the material can also enter the interval a from the gap g. In addition, a blade flow channel h is left between the separated guide blades 502, and the material can also enter the interval a from the blade flow channel h.

The material entering from the feed port 16 will be affected by the rising airflow (generated by the rotation of the guide blade 502 and the suction device). Under the action of the rising airflow, the material that needs secondary crushing can enter from the gap f and move through the blade flow channel h and the gap g to the gap a, thereby performing a crushing cycle.

The specific working principle of the crusher is as follows:

The first motor 10 and the second motor 11 are started. The first motor 10 drives the crushing disc 5 to rotate through the first rotating shaft 3. The second motor 11 drives the grading wheel assembly 6 to rotate through the second rotating shaft 4. The external suction device operates and generates negative pressure.

The material enters the lower chamber 1302 from the feed pipe 8, wherein the material with a smaller particle size can move through the gap b to the gap c under the action of the rising airflow, and the material with the required particle size can pass through the feed gap between the impeller blades 602 and be discharged through the discharge pipe 9;

Materials with larger particle sizes will fall into the gap a between the crushing disk 5 and the wall of the lower cylinder 202. The crushing hammer 501 of the crushing disk 5 can crush the materials passing through the gap a. Under the action of the rising airflow, the crushed small-size materials pass through the gap b and pass through the gap c along the inner wall of the top of the upper cylinder 201 to enter the gap d between the inner wall of the guide cover 7 and the impeller blade 602. Materials that meet the required particle size can pass through the feed gap between the impeller blades 602 and be discharged through the discharge pipe 9.

Under the factors of gravity and impact of other materials, material particles that do not meet the required particle size can move downward along the inner wall of the guide cover 7 and be discharged through the gap e between the lower edge of the guide cover 7 and the crushing disk 5. The crushing hammer 501 can further crush the material passing through the gap e, and the crushed material enters the gap a (the material can also be further crushed when passing through the gap a); the material at the gap a continues to perform a cyclic crushing motion under the action of the rising airflow until the material can pass through the feed gap between the impeller blades 602, completing the crushing process.

In addition, when materials that do not meet the standard particle size enter from the feed port 16, under the action of the rising airflow, the materials enter the gap a from the gap f, gap g and gap h, and the crushing hammer 501 crushes the materials passing through the gap a, and performs cyclic screening according to the above process until the materials can pass through the gap between the impeller blades 602.

So far, the present embodiment has been described in detail in conjunction with the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the gas circulation type pulverizer of the utility model.

Of course, the above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept of the utility model, or direct/indirect application in other related technical fields are included in the patent protection scope of the utility model and should be protected by the utility model.

Claims (10)

1. The air circulation type pulverizer is characterized by comprising an assembly table, a cylinder body, a first rotating shaft, a second rotating shaft, a pulverizing disc, a classifying wheel assembly and a guide cover;

The cylinder is arranged on the assembly table, and a cavity is formed in the cylinder; a feeding pipe and a discharging pipe are arranged on the side wall of the barrel, and are communicated with a cavity, wherein the discharging pipe is also externally connected with a material sucking device;

the assembly table is provided with a first motor, one end of a first rotating shaft is connected with an output shaft of the first motor, and the other end of the first rotating shaft extends into the cavity;

The crushing disc is arranged at the other end of the first rotating shaft, the crushing disc is arranged in the horizontal direction, the crushing hammer is arranged at the top end of the crushing disc, the guide vane is arranged at the bottom end of the crushing disc, and a gap is reserved between the crushing disc and the cylinder;

the second rotating shaft is arranged in the cavity, and one end of the second rotating shaft is connected with an output shaft of the second motor;

The grading wheel assembly is arranged at the other end of the second rotating shaft and separates the discharging pipe;

The pod is disposed in the chamber and the pod is disposed about the classifying wheel assembly;

an airtight component is arranged between the classification wheel component and the discharging pipe and is used for sealing a gap between the classification wheel component and the discharging pipe.

2. The air circulation type pulverizer of claim 1, wherein the airtight packing assembly comprises an upper connection plate, a lower connection plate, and a double-layered partition;

the upper connecting plate is connected with the top end of the cylinder body, a double-layer partition plate is arranged between the upper connecting plate and the lower connecting plate, the upper end of the double-layer partition plate is connected with the upper connecting plate, and the lower connecting plate is connected with the lower end of the double-layer partition plate;

A ventilation cavity is arranged between the double-layer partition plates, an upper connecting plate is provided with an upper ventilation hole, one side of the upper ventilation hole is communicated with the outside of the cylinder body, and the other side of the upper ventilation hole is communicated with the ventilation cavity; the lower connecting plate is provided with a lower vent hole, one side of the lower vent hole is communicated with the vent cavity, and the other side of the lower vent hole is communicated with a gap between the lower connecting plate and the grading wheel assembly.

3. An air circulation type pulverizer as set forth in claim 1, wherein,

The middle part of the crushing disc is provided with a crushing disc connecting sleeve, and the crushing disc is connected with a first rotating shaft through the crushing disc connecting sleeve;

The crushing hammers are circumferentially arranged along the axis of the crushing disc, and the crushing ends of the crushing hammers are arranged at a gap between the crushing disc and the wall of the lower cylinder;

The guide vanes are circumferentially arranged along the axis of the crushing disc, and the preset intervals are reserved between the adjacent guide vanes.

4. The air circulation type pulverizer of claim 1, wherein a supporting assembly is provided on an outer side of the first rotary shaft, the supporting assembly including a supporting cylinder, a bearing, an upper gland and a lower gland;

The support cylinder is connected with the assembly table, the upper gland is connected with the top end of the support cylinder, and the upper end of the first rotating shaft penetrates through the upper gland and extends into the cavity; the lower gland is connected with the bottom end of the supporting cylinder, and the lower end of the first rotating shaft penetrates through the lower gland and extends to the outside of the cylinder body;

the inside of the supporting cylinder is provided with a bearing, and the first rotating shaft is assembled on the bearing.

5. An air circulation type pulverizer as set forth in claim 1, wherein,

The first rotating shaft is also provided with a heat dissipation assembly, and the heat dissipation assembly comprises a fan plate and heat dissipation blades;

The fan plate is provided with an assembly hole, and the fan plate is assembled to the first rotating shaft through the assembly hole;

The radiating blades are arranged on the fan plate, and the radiating blades are circumferentially arranged along the axis of the fan plate.

6. An air circulation pulverizer as claimed in claim 1, wherein the classifying wheel assembly includes an upper impeller plate, impeller blades, a lower impeller plate and a classifying wheel connection sleeve;

A grading wheel connecting sleeve is arranged in the middle of the lower impeller disc and is connected with the second rotating shaft;

A plurality of impeller blades are arranged between the upper impeller disc and the lower impeller disc, and are circumferentially arranged along the axis of the lower impeller disc, and a feeding gap is reserved between the adjacent impeller blades.

7. An air circulation type pulverizing machine according to claim 4, wherein,

The output shaft of the first motor is provided with a driving belt pulley, the first rotating shaft is provided with a driven belt pulley, the driven belt pulley is arranged on the outer side of the cylinder body, and the driving belt pulley is connected with the driven belt pulley through a belt.

8. An air circulation type pulverizer as set forth in claim 1, wherein,

The cylinder is characterized in that a wear-resistant layer is further arranged on the cylinder wall of the cylinder body, and protrusions are arranged on the wear-resistant layer.

9. An air circulation type pulverizer as set forth in claim 1, wherein,

The second rotation shaft is arranged in the cavity along the vertical direction, the second motor is arranged outside the top end of the cylinder body, and the second motor is connected with the second rotation shaft through a coupling.

10. An air circulation type pulverizer as set forth in claim 1, wherein,

The lower end of the side wall of the cylinder body is provided with a feed inlet, the feed inlet is arranged below the feed pipe, and the feed inlet is communicated with the cavity;

a guide plate is arranged below the guide vane and is of an annular structure;

The first rotating shaft penetrates through the middle position of the guide plate, a gap is reserved between the inner ring of the annular guide plate and the first rotating shaft, and a gap is reserved between the top end of the guide plate and the bottom end of the guide blade.