AU2019275771B2 - Crushing apparatus capable of simultaneously performing drying - Google Patents
Crushing apparatus capable of simultaneously performing drying Download PDFInfo
- Publication number
- AU2019275771B2 AU2019275771B2 AU2019275771A AU2019275771A AU2019275771B2 AU 2019275771 B2 AU2019275771 B2 AU 2019275771B2 AU 2019275771 A AU2019275771 A AU 2019275771A AU 2019275771 A AU2019275771 A AU 2019275771A AU 2019275771 B2 AU2019275771 B2 AU 2019275771B2
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- AU
- Australia
- Prior art keywords
- pulverizing
- sieve plate
- heat carrier
- drying
- disposed
- Prior art date
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- 238000001035 drying Methods 0.000 title claims abstract description 65
- 239000000463 material Substances 0.000 claims abstract description 105
- 238000010298 pulverizing process Methods 0.000 claims description 178
- 239000012159 carrier gas Substances 0.000 claims description 52
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 239000012528 membrane Substances 0.000 claims description 10
- 239000012774 insulation material Substances 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 3
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 6
- 239000000843 powder Substances 0.000 description 33
- 239000002245 particle Substances 0.000 description 21
- 230000000694 effects Effects 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/08—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers
- B02C18/12—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers with drive arranged below container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
- B07B1/4636—Regulation of screen apertures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Provided is a crushing apparatus capable of simultaneously performing drying, said apparatus comprising a drying unit and a crushing unit, the drying unit comprising a heat-carrying tube (16) and a heat source, the crushing unit comprising a crushing chamber (2), a material inlet (15), a material outlet and a crushing tool, the material inlet (15) and the material outlet being respectively arranged above and below the crushing chamber (2), the heat-carrying tube (16) and the crushing tool being arranged within the crushing chamber (2), the heat-carrying tube (16) being hollow, a bottom portion being provided with an opening, heat-carrying gas provided by the heat source entering into the crushing chamber (2) via the heat-carrying tube (16). The crushing apparatus simultaneously performs drying and crushes a material without being additionally provided with a drying chamber, prevents dust produced by the material from polluting the environment during the crushing process, prevents the material from adhering to inner walls of the crushing chamber, and implements high-efficiency material crushing and drying.
Description
Field of the Invention
The present invention relates to the technical field of pulverizing machinery, and in particular, to a universal pulverizing device capable of simultaneous drying.
Description of Related Art
Currently, in industries such as coal, chemicals and pharmaceuticals, a pulverizing device is a machine that pulverizes large-size solid raw materials to a required size, which realizes pulverization by means of high-speed collision.
Pulverizers in the prior art have a simple function, and are mostly provided with separate drying and pulverizing devices. Some pulverizers enable drying and pulverization in the same device, but the produced powder easily adheres to an inner wall of a pulverizing chamber during pulverization of wet materials. As a result, the material powder agglomerates, making it difficult to pulverize the materials into fine powder and inconvenient to take out the pulverized materials. Moreover, in the pulverization process, the high-speed rotation of blades easily causes the powder to enter the environment, forming dust. Inhalation of large amounts of dust affects the health of people.
In view of the foregoing problems, the present invention aims to provide a pulverizing device capable of simultaneous drying, which can obtain dry fine powder in a short time while reducing the introduction of dust into the environment during pulverization, thus solving the technical problem in the prior art.
The objective of the present invention is mainly achieved by the following technical solutions.
The present invention provides a pulverizing device capable of simultaneous drying, which includes a drying unit and a pulverizing unit. The drying unit includes a heat carrier cylinder and a heat source; and the pulverizing unit includes a pulverizing chamber, a feed port, a discharge port, and a pulverizing cutter. The feed port and the discharge port are respectively disposed above and below the pulverizing chamber; the heat carrier cylinder and the pulverizing cutter are disposed in the pulverizing chamber; the heat carrier cylinder is hollow and provided with an opening at the bottom; and a heat carrier gas supplied by the heat source enters the pulverizing chamber through the heat carrier cylinder.
Further, the drying unit also includes a heat carrier gas inlet pipe and a heat carrier gas outlet pipe which are separately communicated with the pulverizing chamber; and at least one filter membrane is disposed at a nozzle of the heat carrier gas outlet pipe.
Further, the pulverizing device also includes a sieve plate disposed on a bottom surface of the pulverizing chamber and made from a thermal insulation material.
Further, the sieve plate is an aperture-adjustable sieve plate, and the aperture-adjustable sieve plate includes an upper sieve plate and a bottom sieve plate which are rotatably connected.
Further, a shaker is disposed on the aperture-adjustable sieve plate and located beneath the aperture-adjustable sieve plate.
Further, the pulverizing cutter includes a cutter head and a long blade which are both disposed on a pulverizing cutter fixing part, and the cutter head is disposed above the long blade; the pulverizing cutter fixing part is disposed on the bottom of the pulverizing chamber and is connected to a drive motor in a pulverizing device main body.
Further, the heat carrier cylinder is a hollow cylinder and provided with at least one gas-guide hole.
Further, the pulverizing unit also includes a scraper plate disposed on a sidewall of the pulverizing chamber.
Further, the heat source is a combustion furnace; and
the combustion furnace can adjust the temperature of the heat carrier gas according to the material properties.
Further, the heat carrier gas is nitrogen gas or air and has a temperature less than or equal to 150°C.
Compared to the prior art, the present invention achieves the following advantageous effects:
The universal pulverizing device capable of simultaneous drying provided by the present invention can efficiently implement material drying and pulverization, and conduct both drying and pulverizing operations in the pulverizing chamber, without the need to provide an additional drying chamber. The heat carrier gas exported from the bottom of the heat carrier cylinder can be in sufficient contact with the surface of the material, absorb the moisture in the material, and timely discharge the moisture out of the pulverizing chamber, accelerating material pulverization. In turn, the broken material can be dried more easily. The drying and pulverizing operations promote each other, shortening a required pulverization time and improving the drying efficiency. Moreover, due to high temperature resistance, the pulverizing cutter is unlikely to deform and spoil the material. The temperature of the heat carrier gas can be adjusted by the combustion furnace according to the material properties. The filter membrane disposed at the heat carrier gas outlet pipe can prevent dust of the pulverized material from entering the atmosphere and polluting the environment. A shaker is disposed on a sieve plate made from a thermal insulation material on the bottom of the pulverizing chamber. On one hand, the shaker drives the sieve plate to vibrate, so as to timely sift out material powder reaching the particle size requirement. On the other hand, due to the thermal insulation property, the sieve plate can avoid heat conduction to the greatest extent, thus avoiding an adverse effect on the pulverizing device main body.
In the present invention, the above technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be set forth in the following description. Some advantages are apparent from the description or can be understood by the implementation of the present invention. The objectives and other advantages of the present invention can be achieved and obtained from contents specially pointed out in the description, the appended claims, and the accompanying drawings.
The accompanying drawings are only for the purpose of illustrating a specific embodiment, and are not considered as a limitation to the present invention. Throughout the accompanying drawings, identical numerals indicate identical parts.
FIG. 1 is a schematic diagram of the structure of a pulverizing device capable of simultaneous drying according to the present invention; and
FIG. 2 is a schematic diagram of the shape of a long blade and a short cutter head of a pulverizing cutter according to the present invention.
Meaning of reference numerals:
1. Pulverizing device main body; 2. Pulverizing chamber; 3. Short cutter head; 4. Heat carrier gas inlet pipe; 5. Heat carrier gas outlet pipe; 6. Filter membrane; 7. Long blade; 8. Combustion furnace; 9. Sliding door; 10. Sieve plate; 11. Material collecting bin; 12. Shaker; 13. Guide hopper; 14. Handle; 15. Feed port; 16. Heat carrier cylinder; 17. Gas-guide hole; 18. Pulley; 19. Slide; and 20. Scraper plate
A preferred embodiment of the present invention is specifically described below with reference to the accompanying drawings. The accompanying drawings form a part of the present application and are used to illustrate the principle of the present invention together with the embodiment of the present invention and are not intended to limit the scope of the present invention.
The present invention provides a universal pulverizing device capable of simultaneous drying, which includes a drying unit and a pulverizing unit. The drying unit includes a heat carrier gas inlet pipe 4, a heat carrier gas outlet pipe 5, a heat carrier cylinder 16, and a heat source. The pulverizing unit includes a pulverizing device main body 1, a pulverizing chamber 2, a pulverizing cutter, a feed port 15, a discharge port, and a material collecting bin 11. The heat carrier cylinder 16 is disposed in the pulverizing chamber 2. The heat carrier gas outlet pipe 5 is communicated with the heat source and the heat carrier cylinder 16 separately, and is disposed on a sidewall of the pulverizing chamber 2. The pulverizing device main body 1 is mounted on the level ground, and the pulverizing chamber 2 is disposed above the pulverizing device main body 1. The feed port 15 is disposed above the pulverizing chamber 2, the pulverizing cutter is disposed in the pulverizing chamber 2, and the material collecting bin 11 is disposed below the pulverizing chamber 2. A heat carrier gas supplied by the drying unit is used for drying in the pulverizing chamber 2. The heat carrier cylinder 16 is hollow at the bottom, and is provided with an opening at the bottom. The heat carrier gas enters the pulverizing chamber through the heat carrier cylinder 16 to implement drying.
Exemplarily, as shown in FIG. 1, during simultaneous drying and pulverization, on one hand, the heat carrier gas enters the heat carrier cylinder 16 in the pulverizing chamber 2 from the heat source through the heat carrier gas inlet pipe 4. Because the heat carrier cylinder 16 is hollow at the bottom and provided with a tapered aperture at the bottom, the heat carrier gas enters the pulverizing chamber through the tapered aperture on the bottom of the heat carrier cylinder 16 to implement drying, and reaches the bottom of the pulverizing chamber 2 through the heat carrier cylinder 16. On the other hand, materials containing moisture enter the pulverizing chamber 2 through the feed port 15 on the top of the pulverizing chamber 2, and the wet materials collide with the pulverizing cutter rotating at high speed in the pulverizing chamber 2, to produce small particles after the collision. During pulverization, the heat carrier gas in the pulverizing chamber 2 conducts heat exchange with the materials, and absorbs the moisture in the materials and discharges it out of the pulverizing chamber. The materials keep colliding with the pulverizing cutter to repeat drying and pulverization, until material powder whose particle size meets the requirement is generated. Afterwards, the pulverized material powder goes into the material collecting bin 11 through the discharge port, thus realizing simultaneous material drying and pulverization. It should be noted that, the material collecting bin 11 is disposed inside the pulverizing device main body 1, and located at one side of a motor in the pulverizing device main body 1.
The universal pulverizing device capable of simultaneous drying provided by the present invention can efficiently implement material drying and pulverization, and conduct both the drying and pulverizing operations in the pulverizing chamber 2, without the need to provide an additional drying chamber. In addition, the heat carrier gas exported from the bottom of the heat carrier cylinder 16 can be in sufficient contact with the surface of the material, absorb the moisture in the material, and timely discharge the moisture out of the pulverizing chamber 2. Moreover, due to high temperature resistance, the pulverizing cutter is unlikely to deform and spoil the material.
In order to avoid dust contamination caused by the heat carrier gas taking away the pulverized material powder after completion of drying, the drying unit further includes a heat carrier gas inlet pipe 4 and a heat carrier gas outlet pipe 5 which are separately communicated with the pulverizing chamber. At least one filter membrane is disposed at the heat carrier gas outlet pipe 5. Alternatively, a plurality of filter membranes 6 may also be disposed at the heat carrier gas outlet pipe 5, and the pore size of the filter membrane 6 is far smaller than the particle size of the material powder. The filter membrane 6 is used to prevent dust leakage from the pulverizing chamber 2. Specifically, during material drying and pulverization, after the material powder is dried and its particle size meets the material pulverization requirement, some of the material powder falls onto a sieve plate 10 and is sifted out by the sieve plate 10, while a small amount of the material powder is carried by the flowing heat carrier gas to a heat carrier gas outlet. In this case, because the pore size of the plurality of filter membranes 6 located at the heat carrier gas outlet is far smaller than the particle size of the material powder, the material powder is held back and stays in the pulverizing chamber 2, thus preventing the material powder from causing dust contamination.
In order to timely sift out material powder already meeting the particle size requirement, the pulverizing device further includes a sieve plate 10 which is a circular plate having a certain thickness and provided with a plurality of meshes of identical sizes. The sieve plate 10 is disposed on a bottom surface of the pulverizing chamber 2 and is used to sift the material powder. Exemplarily, the dried and pulverized material powder may gather at the bottom of the pulverizing chamber 2. The sieve plate 10 disposed on the bottom of the pulverizing chamber 2 is provided with meshes of which the size is identical with the required particle size. That is to say, material powder of which the particle size is smaller than or equal to the required particle size can pass through the meshes to enter the material collecting bin 11, so that the material powder meeting the particle size requirement can be sifted out in time. It should be noted that, the sieve plate 10 in the present invention is made from a thermal insulation material which can prevent heat conduction between the pulverizing chamber 2 and the pulverizing device main body 1 to the greatest extent, thus avoiding the influence of high temperature on the working performance of an electric motor in the pulverizing device main body 1.
In order to separate out material powder meeting different particle size requirements, the sieve plate 10 may be an aperture-adjustable sieve plate. The mesh size of the aperture-adjustable sieve plate can be adjusted according to the material properties, to sift out material powder with different particle sizes. FIG. 2 shows the structure of said sieve plate. The aperture-adjustable sieve plate is formed by connecting two or more identical sieve plates via a rotation shaft. For example, when the aperture-adjustable sieve plate has two layers, the bottom sieve plate thereof is fixedly connected to the pulverizing chamber 2, and is connected to the upper sieve plate via the rotation shaft. When the upper sieve plate is stationary, the aperture size of the aperture-adjustable sieve plate is identical to those of the upper sieve plate and the bottom sieve plate. When the upper sieve plate is rotated with respect to the bottom sieve plate, the meshes on the upper sieve plate and the meshes on the bottom sieve plate partially overlap, and thus the finally obtained aperture size of the whole sieve plate is smaller than that before rotation of the upper sieve plate, realizing adjustment of the aperture size of the aperture-adjustable sieve plate. The aperture-adjustable sieve plate is connected to and controlled by a host in the pulverizing device main body 1 via a drive motor. A specific pulverization process is as follows: Located between the pulverizing chamber 2 and the pulverizing device main body 1, the aperture-adjustable sieve plate sifts the dried and pulverized material powder; and can be adjusted in aperture size according to the material properties and pulverization requirements. When the particle size of the pulverized material is smaller than or equal to a set aperture size of the sieve plate, dried material powder meeting the particle size requirement passes through the aperture-adjustable sieve plate and comes into a guide hopper 13 disposed beneath the aperture-adjustable sieve plate. The guide hopper 13 is cone-shaped and has a small-diameter opening end at the bottom. The material powder enters the material collecting bin 11 disposed below the guide hopper through the opening end, thus timely separating out material powder meeting the particle size requirement.
In order to prevent the material powder from piling up on the aperture-adjustable sieve plate and to further improve the sifting efficiency, the aperture-adjustable sieve plate is disposed with shakers 12 which are arranged on the bottom sieve plate and the upper sieve plate of the aperture-adjustable sieve plate respectively. The shakers 12 are used to vibrate the aperture-adjustable sieve plate. Specifically, during material pulverization, a part of the material powder may pile up on the sieve plate after reaching the pulverization requirements. To speed up the sifting operation, the shakers 12 are mounted so as to drive the sieve plate to vibrate and further to accelerate the passage of the material powder through the meshes of the sieve plate, thus improving the sifting efficiency.
To more efficiently implement pulverization, the pulverizing cutter includes a short cutter head 3 and a long blade 7 which are both disposed on a fixing part. The short cutter head 3 is disposed above the long blade 7, the pulverizing cutter fixing part is disposed on the bottom of the pulverizing chamber 2 and is connected to the drive motor in the pulverizing device main body 1. The short cutter head 3 and the long blade 7 can both rotate about the fixing part. Specifically, the pulverizing cutter includes a short cutter head 3 and a long blade 7 which are both disposed on a rotation shaft, and the short cutter head 3 is disposed above the long blade 7. In the pulverization process, the short cutter head 3 and the long blade 7 both rotate with the rotation shaft. Large material particles are thrown to the sidewalls of the pulverizing chamber 2, while small material particles generally gather at the rotation shaft. In this case, the long blade 7 is mainly used to pulverize the large material particles and the short cutter head 3 is mainly used to pulverize the small material particles. The heat carrier gas is constantly introduced in the pulverization process for drying. The drying and pulverizing operations promote each other to accelerate pulverization. Moreover, the high-speed rotation of the long blade 7 and the short cutter head 3 can produce airflow which facilitates the heat carrier gas to flow out of the pulverizing chamber 2 after heat exchange. The high-temperature heat carrier gas enters the pulverizing chamber 2 through the heat carrier cylinder 16, realizing a virtuous circle of drying and pulverization. In addition, when required, the speed of the rotation shaft can be adjusted by use of a speed control valve on the drive motor.
In order to improve the drying efficiency and make the materials be dried evenly, the heat carrier cylinder 16 is a hollow cylinder and is provided with at least one gas-guide hole. The heat carrier gas is introduced into the pulverizing chamber 2 through the gas-guide hole. In the drying process, the amount and distribution of the heat carrier gas directly determine whether the materials can be timely dried. In order that the materials are heated evenly, the heat carrier cylinder 16 is welded on the top of the pulverizing chamber 2. The heat carrier cylinder 16 is hollow and provided with gas-guide holes 17 on the sidewall near the bottom. The closer the gas-guide holes 7 are to the bottom of the heat carrier cylinder 16, the denser the gas-guide holes 17 are. A tapered aperture is made in the lowest end of the heat carrier cylinder 16, and most of the heat carrier gas is exported through the tapered aperture at the lowest end of the heat carrier cylinder 16. The heat carrier gas flows approximately from bottom up, so that the materials on the bottom portion of the pulverizing chamber 2 can be thoroughly dried and pulverization by the pulverizing cutter is promoted, improving both drying efficiency and pulverization efficiency.
In order to prevent the materials from adhering to an inner wall of the pulverizing chamber 2, the pulverizing unit further includes a scraper plate 20 which is disposed in the pulverizing chamber 2. The scraper plate 20 is connected onto the fixing part via a support plate and capable of rotating about the fixing part. Specifically, during drying and pulverization, materials newly coming into the pulverizing chamber 2 all contain a certain amount of moisture, and some of the wet materials may adhere to the inner wall of the pulverizing chamber 2. In order to alleviate adhesion of the wet materials, a support plate may be disposed on the rotation shaft in the pulverizing chamber 2. The axis of the rotation shaft and the axis of the pulverizing chamber 2 are on the same straight line. The scraper plates 20 are respectively disposed on the two ends of the support plate, and get close to the inner wall of the pulverizing chamber 2. In the pulverization process, the scraper plates 20 rotate with the rotation shaft to timely scrape off the material powder adhering to the inner wall of the pulverizing chamber 2, thus preventing agglomeration of the material powder on the inner wall of the pulverizing chamber 2.
In order to meet the drying requirements for the materials, the heat source is a combustion furnace 8 which can adjust the temperature of the heat carrier gas according to the material properties. Specifically, in the drying process, different materials require different degrees of drying according to their properties. When the material requires a high degree of drying, the combustion furnace 8 raises the temperature of the heat carrier gas to accelerate moisture removal from the material by the heat carrier gas. When the material requires a low degree of drying, the temperature of the heat carrier gas may be lowered properly, thus achieving the objective of adjusting the temperature of the heat carrier gas according to the material properties.
In order to avoid an adverse effect on the pulverizing device and the materials due to excessively high temperature, and to prevent the heat carrier gas from affecting the material properties and causing spoilage, the heat carrier gas supplied by the combustion furnace 8 is nitrogen gas or air and has a temperature less than or equal to 150°C.
It should be further noted that, the pulverizing device main body 1 is disposed with a sliding door 9 at one side, which is provided with a slide 19 at the bottom. The material collecting bin 11 is disposed with pulleys 18 at the bottom end and a handle 14 at one side. When the material collecting bin 11 is full or sampling is required, the sliding door 9 is opened and the handle 14 is pulled to draw the material collecting bin 11 out of the pulverizing device main body 1, and then unloading or sampling is conducted.
To sum up, the universal pulverizing device capable of simultaneous drying provided by the present invention can efficiently implement material drying and pulverization, and conduct both drying and pulverizing operations in the pulverizing chamber 2, without the need to provide an additional drying chamber. The heat carrier gas exported from the bottom of the heat carrier cylinder 16 can be in sufficient contact with the surface of the material, absorb the moisture in the material, and timely discharge the moisture out of the pulverizing chamber 2, accelerating material pulverization. In turn, the broken material can be dried more easily. The drying and pulverizing operations promote each other, shortening a required pulverization time and improving the drying efficiency. Moreover, due to high temperature resistance, the pulverizing cutter is unlikely to deform and spoil the original material. The temperature of the heat carrier gas can be adjusted by the combustion furnace 8 according to the material properties. The filter membrane 6 disposed at the heat carrier gas outlet pipe 5 can prevent dust of the pulverized material from entering the atmosphere and polluting the environment. A shaker 12 is disposed on a sieve plate 10 made from a thermal insulation material on the bottom of the pulverizing chamber 2. On one hand, the shaker 12 drives the sieve plate 10 to vibrate, so as to timely sift out material powder reaching the particle size requirement. On the other hand, due to the thermal insulation property, the sieve plate 10 can avoid heat conduction to the greatest extent, thus avoiding an adverse effect on the pulverizing device main body.
The above merely describes a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Variations or replacements easily conceived by any one skilled in the art within the technical scope of the present invention all fall within the protection scope of the present invention.
Claims (4)
1. A pulverizing device capable of simultaneous drying, comprising a drying unit and a pulverizing unit, wherein the drying unit comprises a heat carrier cylinder and a heat source; and the pulverizing unit comprises a pulverizing chamber, a feed port, a discharge port, and a pulverizing cutter; the feed port and the discharge port are respectively disposed above and below the pulverizing chamber; and the heat carrier cylinder and the pulverizing cutter are disposed in the pulverizing chamber;
the heat carrier cylinder is hollow and provided with an opening at the bottom; and
a heat carrier gas supplied by the heat source enters the pulverizing chamber through the heat carrier cylinder; wherein the drying unit further comprises a heat carrier gas inlet pipe and a heat carrier gas outlet pipe which are separately communicated with the pulverizing chamber; and at least one filter membrane is disposed at a nozzle of the heat carrier gas outlet pipe;
wherein the pulverizing device further comprises a sieve plate disposed on a bottom surface of the pulverizing chamber and made from a thermal insulation material; wherein the sieve plate is an aperture-adjustable sieve plate; and the aperture-adjustable sieve plate comprises an upper sieve plate and a bottom sieve plate which are rotatably connected via a rotation shaft;
wherein a shaker is disposed on the aperture-adjustable sieve plate and located beneath the aperture-adjustable sieve plate; wherein the heat carrier cylinder is a hollow cylinder and provided with at least one gas-guide hole; wherein the pulverizing unit further comprises a scraper plate disposed on a sidewall of the pulverizing chamber; wherein the upper sieve plate and the bottom sieve plate each having apertures such that, when the upper sieve plate is stationary, an aperture size of the adjustable bore sieve plate is equal to an aperture size of the lower sieve plate and the upper sieve plate; and when the upper sieve plate rotates about the lower sieve plate, the apertures between the upper sieve plate and lower sieve plate partially overlap, and the bore formed by said upper sieve plate and lower sieve plate is smaller than the aperture size before rotation of the upper sieve plate; wherein there are at least two scraper plates that are connected to a pulverizing tool fixing part via a support plate and that can rotate about the pulverizing tool fixing part, with an axis of the rotation shaft and an axis of the pulverizing chamber being on the same straight line; and wherein the at least two scraper plates are provided at both ends of the support plate and near an internal wall of the pulverizing chamber, and rotate with the rotation shaft during pulverizing.
2. The pulverizing device capable of simultaneous drying according to claim 1, wherein the pulverizing cutter comprises a cutter head and a long blade which are both disposed on a pulverizing cutter fixing part, and the cutter head is disposed above the long blade; the pulverizing cutter fixing part is disposed on the bottom of the pulverizing chamber and is connected to a drive motor in a pulverizing device main body.
3. The pulverizing device capable of simultaneous drying according to claim 1, wherein the heat source is a combustion furnace; and
the combustion furnace is able to adjust the temperature of the heat carrier gas according to the material properties.
4. The pulverizing device capable of simultaneous drying according to claim 1, wherein the heat carrier gas is nitrogen gas or air and has a temperature less than or equal to 150°C.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810535269.8 | 2018-05-29 | ||
| CN201810535269.8A CN108636540B (en) | 2018-05-29 | 2018-05-29 | The grinding device of effect can be dried simultaneously |
| PCT/CN2019/095387 WO2019228548A1 (en) | 2018-05-29 | 2019-07-10 | Crushing apparatus capable of simultaneously performing drying |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2019275771A1 AU2019275771A1 (en) | 2021-01-07 |
| AU2019275771B2 true AU2019275771B2 (en) | 2023-08-03 |
Family
ID=63758730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2019275771A Active AU2019275771B2 (en) | 2018-05-29 | 2019-07-10 | Crushing apparatus capable of simultaneously performing drying |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN108636540B (en) |
| AU (1) | AU2019275771B2 (en) |
| WO (1) | WO2019228548A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108636540B (en) * | 2018-05-29 | 2019-06-11 | 中国矿业大学 | The grinding device of effect can be dried simultaneously |
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| CN115265129B (en) * | 2022-06-29 | 2023-09-19 | 赣州康瑞泰药业有限公司 | Drying equipment for producing medical intermediate |
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| CN115970832A (en) * | 2023-01-09 | 2023-04-18 | 中材高新江苏硅材料有限公司 | Quartz raw material crushing device |
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| KR20100041989A (en) * | 2008-10-15 | 2010-04-23 | 김대중 | Apparatus for refuse and waste water treatment |
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| CN206847282U (en) * | 2017-05-12 | 2018-01-05 | 童晓南 | A kind of pulverizing medicinal materials drying device |
| CN107726733A (en) * | 2017-10-10 | 2018-02-23 | 郑州国知网络技术有限公司 | Lift Chinese medicinal material crushing, stirring drying unit |
| CN108636540B (en) * | 2018-05-29 | 2019-06-11 | 中国矿业大学 | The grinding device of effect can be dried simultaneously |
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| CN205175021U (en) * | 2015-11-11 | 2016-04-20 | 靖江市新天地干燥除尘设备制造有限公司 | Crushing and drying machine |
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| CN108636540B (en) | 2019-06-11 |
| WO2019228548A1 (en) | 2019-12-05 |
| AU2019275771A1 (en) | 2021-01-07 |
| CN108636540A (en) | 2018-10-12 |
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