Airflow crushing system

Abstract

The utility model relates to the technical field of airflow pulverization, in particular to an airflow pulverization system which comprises a feeding mechanism, a pulverization mechanism, a separation mechanism and an air supply mechanism, the feeding mechanism and the separation mechanism are both communicated with the pulverization mechanism, the pulverization mechanism comprises an airflow mill, a grading wheel and a separation cavity, one part of the separation cavity is arranged in the airflow mill, and the other part of the separation cavity is arranged in the air supply mechanism. According to the utility model, air is not branched from an air compressor, a branch is independently led out from the air in the air storage tank, and the fan is adopted to blow air into the gap between the sorting cavity and the grading wheel, so that the condition that the particle size of the crushed material is unqualified due to the fact that the large-particle material passes through the gap is prevented; and the material crushing effect of the crushing gas is not influenced.

Description

Technical Field

[0001] This utility model relates to the field of airflow pulverization technology, specifically an airflow pulverization system. Background Technology

[0002] An air jet milling system is a device that uses high-speed airflow to pulverize materials into fine particles. The system uses compressed air or high-pressure gas as an energy source to accelerate the material and pulverize it in the pulverizing chamber through collision, shearing and friction. Its main components include an air supply source and an air jet mill.

[0003] However, in the prior art, when the air jet mill is in operation, due to the gap between the sorting chamber and the classifying wheel, large particles of material do not pass through the classifying wheel and directly enter the sorting chamber through the gap between the sorting chamber and the classifying wheel, resulting in the particle size of the crushed material being unqualified. At the same time, the prior art does not disclose how to deal with the residual tailings in the air jet mill.

[0004] Chinese patent document CN218901172U discloses a device for secondary air return utilization of a lithium carbonate air jet mill, which has a good energy saving and emission reduction effect. However, it does not disclose how to solve the problem that large particles of material directly enter the sorting chamber through the gap between the sorting chamber and the classifying wheel, resulting in unqualified particle size of the crushed material, nor does it disclose how to deal with the residual tailings in the air jet mill.

[0005] In summary, the problem to be solved is how to design an air jet mill system that can prevent large particles from passing through the gaps, resulting in unqualified particle size of the pulverized material, and can also handle the residual tailings in the air jet mill. Utility Model Content

[0006] The purpose of this invention is to provide an airflow pulverizing system to solve the above problems.

[0007] To achieve the above objectives, the following technical solutions are provided:

[0008] An airflow pulverizing system, comprising:

[0009] A crushing mechanism and a fan connected thereto, the fan being used to supply air to the gaps in the crushing mechanism to form an airtight seal at the gaps.

[0010] Preferably, the pulverizing mechanism includes an air jet mill, a classifying wheel, and a sorting chamber. A portion of the sorting chamber is disposed within the air jet mill for material sorting. The classifying wheel is disposed close to the sorting chamber, has a degree of rotational freedom, and there is a fixed gap between the sorting chamber and the classifying wheel. The sorting chamber is provided with a ventilation jacket, and the fan is used to supply air to the gap between the classifying wheel and the sorting chamber.

[0011] Preferably, the pulverizing system further includes a feeding mechanism, a separating mechanism, and a gas supply mechanism, wherein the feeding mechanism and the separating mechanism are both connected to the pulverizing mechanism;

[0012] The air supply mechanism includes an air storage tank and an air compressor, a first cooler, and a first dryer arranged in sequence. The air compressor is connected to the first outlet end of the air storage tank, and the outlet end of the first dryer is connected to the bottom of the air jet mill for material crushing.

[0013] The gas supply mechanism further includes a second cooler and a second dryer connected in sequence. The fan is connected to the second outlet end of the gas storage tank, and the outlet end of the second dryer is connected to the ventilation jacket.

[0014] Preferably, the gas supply mechanism further includes a gas source, an electric regulating valve one, and an electric regulating valve two. The third outlet end of the gas storage tank is connected to the first end of the electric regulating valve one, the second end of the electric regulating valve one is connected to the outside, the gas source is connected to the first end of the electric regulating valve two, and the second end of the electric regulating valve two is connected to the inlet end of the air compressor for regulating the system gas pressure.

[0015] Preferably, the separation mechanism includes a first induced draft fan, a second induced draft fan, a first cyclone separator, and a second cyclone separator. The sorting chamber is sequentially connected to the air inlet ends of the first induced draft fan and the first cyclone separator. The side wall of the air mill is provided with an opening, and the side wall opening of the air mill is sequentially connected to the air inlet ends of the second induced draft fan and the second cyclone separator. The separation mechanism also includes a T-type three-way valve. The air outlet ends of the first cyclone separator and the second cyclone separator are respectively connected to the first end and the second end of the T-type three-way valve. The third end of the T-type three-way valve is connected to a filter, and the filter is connected to the inlet end of the air storage tank.

[0016] Preferably, the feeding mechanism includes a feeding hopper and a third induced draft fan. The bottom of the feeding hopper is connected to the top of the air jet mill. The discharge end of the second cyclone separator is connected in sequence to the side wall of the third induced draft fan and the feeding hopper for secondary crushing of the tail material.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. This utility model does not draw air from the air compressor. Instead, it draws a separate branch from the gas in the gas storage tank and uses a blower to blow air into the gap between the sorting chamber and the classifying wheel. This prevents large particles from passing through the gap, which would result in the pulverized material having an unqualified particle size. It also does not affect the pulverizing effect of the air used for pulverizing the material.

[0019] 2. This utility model uses a second cyclone separator to collect the material that can be attracted from the tailings, which facilitates the discharge of tailings. When the system needs to perform airflow pulverization again, the tailings collected in the second cyclone separator can be added back into the feed hopper by an induced draft fan for secondary airflow pulverization, thus realizing tailings processing. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the present invention;

[0021] Figure 2 This is a schematic diagram showing the connection between the grading wheel and the sorting chamber.

[0022] In the picture:

[0023] 101 - Feed hopper, 102 - Third induced draft fan;

[0024] 201-Airflow mill, 202-Grading wheel, 203-Sorting chamber, 204-Ventilated jacket;

[0025] 301-First induced draft fan, 302-Second induced draft fan, 303-First cyclone separator, 304-Second cyclone separator, 305-T-type three-way valve, 306-Filter;

[0026] 401-Air tank, 402-Air compressor, 403-First cooler, 404-First dryer, 405-Fan, 406-Second cooler, 407-Second dryer, 408-Air source, 409-Electric regulating valve one, 410-Electric regulating valve two. Detailed Implementation

[0027] The technical solutions illustrated in the schematic diagrams of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figure 1-2As shown, an airflow pulverizing system includes: a feeding mechanism, a pulverizing mechanism, a separating mechanism, and an air supply mechanism. The feeding mechanism and the separating mechanism are both connected to the pulverizing mechanism. The pulverizing mechanism includes an airflow mill 201, a classifying wheel 202, and a sorting chamber 203. A portion of the sorting chamber 203 is disposed inside the airflow mill 201 for material sorting.

[0029] The air supply mechanism includes an air storage tank 401 and an air compressor 402, a first cooler 403 and a first dryer 404 connected in sequence. The air compressor 402 is connected to the first outlet end of the air storage tank 401, and the outlet end of the first dryer 404 is connected to the bottom of the air flow mill 201 for material crushing.

[0030] The grading wheel 202 is arranged close to the sorting chamber 203. The grading wheel 202 has a degree of freedom of rotation, and there is a fixed gap between the sorting chamber 203 and the grading wheel 202. The sorting chamber 203 is provided with a ventilation jacket 204.

[0031] The air supply mechanism also includes a fan 405, a second cooler 406, and a second dryer 407 connected in sequence. The fan 405 is connected to the second outlet end of the air storage tank 401, and the outlet end of the second dryer 407 is connected to the ventilation jacket 204. It is used to supply air to the gap between the classifier wheel 202 and the sorting chamber 203. Instead of branching off the air from the air compressor 402, the gas in the air storage tank 401 is led out separately and blown into the gap between the sorting chamber 203 and the classifier wheel 202 by the fan 405. This prevents large particles from passing through the gap, which would result in the pulverized material having an unqualified particle size. It also does not affect the pulverizing effect of the air used for pulverizing the material.

[0032] In some embodiments, the gas supply mechanism further includes a gas source 408, an electric regulating valve 409, and an electric regulating valve 410. The third outlet end of the gas storage tank 401 is connected to the first end of the electric regulating valve 409, the second end of the electric regulating valve 409 is connected to the outside, the gas source 408 is connected to the first end of the electric regulating valve 410, and the second end of the electric regulating valve 410 is connected to the inlet end of the air compressor 402 for regulating the system gas pressure.

[0033] In some embodiments, the separation mechanism includes a first induced draft fan 301, a second induced draft fan 302, a first cyclone separator 303, and a second cyclone separator 304. The sorting chamber 203 is sequentially connected to the air inlet ends of the first induced draft fan 301 and the first cyclone separator 303. The side wall opening of the air mill 201 is provided, and the side wall opening of the air mill 201 is sequentially connected to the air inlet ends of the second induced draft fan 302 and the second cyclone separator 304. The separation mechanism also includes a T-type three-way valve 305. The air outlet ends of the first cyclone separator 303 and the second cyclone separator 304 are respectively connected to the first end and the second end of the T-type three-way valve 305. The third end of the T-type three-way valve 305 is connected to a filter 306, and the filter 306 is connected to the inlet end of the air storage tank 401.

[0034] In some embodiments, the feeding mechanism includes a feeding hopper 101 and a third induced draft fan 102. The bottom of the feeding hopper 101 is connected to the top of the air jet mill 201. The discharge end of the second cyclone separator 304 is connected to the third induced draft fan 102 and the side wall of the feeding hopper 101 in sequence for secondary crushing of tailings. The second cyclone separator 304 collects the material that can be attracted in the tailings, which facilitates the discharge of tailings. When the system needs to perform air jet crushing operation again, the tailings collected in the second cyclone separator 304 can be added back into the feeding hopper 101 by the induced draft fan for secondary air jet crushing, thereby realizing tailings processing.

Claims

1. An airflow pulverizing system, characterized in that, include: A crushing mechanism and a fan (405) connected thereto, the fan (405) being used to supply air to the gaps of the crushing mechanism to form an airtight seal at the gaps of the crushing mechanism.

2. The airflow pulverizing system according to claim 1, characterized in that, The pulverizing mechanism includes an air jet mill (201), a classifying wheel (202), and a sorting chamber (203). A portion of the sorting chamber (203) is disposed within the air jet mill (201) for material sorting. The classifying wheel (202) is disposed close to the sorting chamber (203). The classifying wheel (202) has a degree of freedom of rotation, and there is a fixed gap between the sorting chamber (203) and the classifying wheel (202). The sorting chamber (203) is provided with a ventilation jacket (204), and the blower (405) is used to supply air to the gap between the classifying wheel (202) and the sorting chamber (203).

3. The airflow pulverizing system according to claim 2, characterized in that, The pulverizing system also includes a feeding mechanism, a separation mechanism, and an air supply mechanism, wherein the feeding mechanism and the separation mechanism are both connected to the pulverizing mechanism; The air supply mechanism includes an air storage tank (401) and an air compressor (402), a first cooler (403) and a first dryer (404) connected in sequence. The air compressor (402) is connected to the first outlet end of the air storage tank (401), and the outlet end of the first dryer (404) is connected to the bottom of the air jet mill (201) for material crushing. The gas supply mechanism further includes a second cooler (406) and a second dryer (407) connected in sequence. The fan (405) is connected to the second outlet end of the gas storage tank (401), and the outlet end of the second dryer (407) is connected to the ventilation jacket (204).

4. The airflow pulverizing system according to claim 3, characterized in that, The gas supply mechanism also includes a gas source (408), an electric regulating valve one (409), and an electric regulating valve two (410). The third outlet end of the gas storage tank (401) is connected to the first end of the electric regulating valve one (409), and the second end of the electric regulating valve one (409) is connected to the outside. The gas source (408) is connected to the first end of the electric regulating valve two (410), and the second end of the electric regulating valve two (410) is connected to the inlet end of the air compressor (402) for regulating the system air pressure.

5. The airflow pulverizing system according to claim 4, characterized in that, The separation mechanism includes a first induced draft fan (301), a second induced draft fan (302), a first cyclone separator (303), and a second cyclone separator (304). The sorting chamber (203) is connected in sequence to the air inlet of the first induced draft fan (301) and the first cyclone separator (303). The side wall of the air mill (201) is provided with an opening, and the side wall opening of the air mill (201) is connected in sequence to the air inlet of the second induced draft fan (302) and the second cyclone separator (304). The separation mechanism also includes a T-type three-way valve (305). The air outlets of the first cyclone separator (303) and the second cyclone separator (304) are respectively connected to the first end and the second end of the T-type three-way valve (305). The third end of the T-type three-way valve (305) is connected to a filter (306), and the filter (306) is connected to the inlet of the air storage tank (401).

6. The airflow pulverizing system according to claim 5, characterized in that, The feeding mechanism includes a feeding hopper (101) and a third induced draft fan (102). The bottom of the feeding hopper (101) is connected to the top of the air jet mill (201). The discharge end of the second cyclone separator (304) is connected to the side wall of the third induced draft fan (102) and the feeding hopper (101) in sequence for secondary crushing of tailings.

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