Feeding mechanism of mechanical pulverizer

Abstract

The utility model provides a feeding mechanism of a mechanical grinder, which is characterized in that a star valve is arranged at the lower end of a stock bin hopper, one end of a feeding pipeline is communicated with the side surface of a main machine of the mechanical grinder, a feeding nozzle is connected with the other end of the feeding pipeline and is connected with a feeding valve through an air pipe, and a feeding hole is formed in the side surface of the feeding pipeline; the discharge port and the feed port of the star valve are connected through a feed pipe; and the mechanical mill main machine, the star valve and the feeding valve are connected with a controller. The spiral feeding mode of an original mechanical pulverizer is improved and designed into pneumatic feeding, and original equipment is slightly transformed; the pneumatic feeding can avoid the problems of material bridging and blockage caused by accumulation of materials at a material port due to spiral feeding, and can also avoid the problem of metal foreign matters caused by abrasion, so that the qualification rate and the quality of products are improved. The device is simple in overall structure, convenient to transform, low in later replacement and maintenance cost, convenient to disassemble, capable of reducing manual operation and cost and beneficial to application and popularization.

Description

Technical Field

[0001] The utility model belongs to the technical field of pulverizers, and in particular relates to a feeding mechanism of a mechanical pulverizer. Background Art

[0002] During the production of positive electrode materials for lithium batteries, according to the production process design, the materials in the sintering furnace need to be crushed by a mechanical crusher and then transported to the equipment or container of the next process. The main feeding method of the existing mechanical crusher adopts a spiral feed shaft. In the processing of positive electrode materials for lithium batteries, it is found that the material bridging problem often occurs at the feed hopper above the spiral feeder, resulting in the failure of the spiral feeder, and the inability to feed smoothly, resulting in the spiral feeder being blocked and requiring dredging; in addition, compared with other materials, the particularity of lithium battery positive electrode materials means that the spiral feed shaft will rub against the material, causing the feed shaft to wear and produce metal foreign matter. The lithium battery positive electrode material industry does not allow metal foreign matter to enter the material, resulting in the material not meeting the requirements, and even causing unqualified products, causing losses to the company. Utility Model Content

[0003] The utility model provides a feeding mechanism of a mechanical pulverizer, which can effectively solve the above problems.

[0004] The utility model is achieved in this way:

[0005] A feeding mechanism of a mechanical pulverizer comprises a hopper, a mechanical mill main unit, a star-shaped valve, a feeding pipe, a feeding nozzle, a feeding valve and a controller, wherein the star-shaped valve is arranged at the lower end of the hopper, one end of the feeding pipe is communicated with the side of the mechanical mill main unit, the feeding nozzle is connected with the other end of the feeding pipe, the feeding nozzle is connected with the feeding valve through an air pipe, a feeding port is arranged on the side of the feeding pipe, and a feeding pipe is arranged between the outlet of the star-shaped valve and the feeding port; the mechanical mill main unit, the star-shaped valve and the feeding valve are connected with the controller.

[0006] As a further improvement, the feeding nozzle extends into the feeding pipe.

[0007] As a further improvement, the feed port is arranged on the upper side of the feeding pipe, and the feeding nozzle is arranged on the inner bottom surface opposite to the feed port.

[0008] As a further improvement, the feed port is provided with a feed pipe, and the feed pipe extends into the feeding pipe.

[0009] As a further improvement, the feeding pipe and the feeding nozzle are arranged parallel to each other.

[0010] As a further improvement, the length of the feed pipe extending into the feeding pipe is 1 / 2-2 / 3 of the inner diameter of the feeding pipe.

[0011] As a further improvement, the caliber of the feeding nozzle is smaller than the caliber of the feeding pipe.

[0012] As a further improvement, the diameter of the air pipe is larger than the diameter of the feeding nozzle.

[0013] As a further improvement, the mechanical mill main unit is connected to an induced draft fan.

[0014] As a further improvement, flanges or clamps are used to connect the mechanical mill main unit and the feeding pipe, the feeding pipe and the feeding nozzle, and the feed pipe and the feeding pipe.

[0015] The beneficial effects of the utility model are as follows: the application improves the original mechanical pulverizer's spiral feeding method into pneumatic feeding, which requires little modification to the original equipment; pneumatic feeding can avoid the problem of material accumulation at the material inlet caused by spiral feeding, thereby causing material bridging and blockage, and can also avoid the problem of metal foreign matter caused by wear, thereby improving the product's qualified rate and quality. The device has a simple overall structure, is easy to modify, and reduces the cost of later replacement and maintenance. It is also easy to disassemble, reduces manual operation, reduces costs, and is conducive to promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram provided by an embodiment of a feeding mechanism of a mechanical pulverizer of the utility model;

[0018] Figure 2 yes Figure 1 A is an enlarged schematic diagram;

[0019] Figure 3 The utility model is a schematic diagram of the feeding mechanism of a mechanical pulverizer in use.

[0020] Reference numerals:

[0021] Silo hopper 1; mechanical grinding main machine 2; star valve 3; feeding pipeline 4; feeding pipe 41; feeding nozzle 5; feeding valve 6; controller 7; air pipe 8; feeding pipe 9; induced draft fan 10. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.

[0023] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] In the description of the present invention, the terms "upper", "middle", "side", "side", "upper side", "end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] Reference Figure 1-3 As shown, a feeding mechanism of a mechanical pulverizer includes a hopper 1, a mechanical mill main unit 2, a star valve 3, a feeding pipe 4, a feeding nozzle 5, a feeding valve 6 and a controller 7, wherein the star valve 3 is arranged at the lower end of the hopper 1, one end of the feeding pipe 4 is connected to the side of the mechanical mill main unit 2, the feeding nozzle 5 is connected to the other end of the feeding pipe 4, the feeding nozzle 5 is connected to the feeding valve 6 through an air pipe 8, a feeding port is arranged on the side of the feeding pipe 4, a feeding port of the star valve 3 is connected to the feeding port by a feeding pipe 9; the mechanical mill main unit 2, the star valve 3 and the feeding valve 6 are connected to the controller 7.

[0026] The star valve 3 controls the material discharge speed and the material discharge amount of the hopper 1, and the feeding valve 6 controls the air delivery time and air volume of the feeding nozzle 5. The material enters the feeding pipe 4 through the feeding pipe 9 and the feeding port, and then is blown into the mechanical mill main machine 2 by the blowing of the feeding nozzle 5. The air feeding process does not produce wear and tear, and avoids the introduction of metal foreign matter; the gas delivers the incoming material into the main machine in time to avoid accumulation and blockage at the feeding port.

[0027] Furthermore, the feeding nozzle 5 extends into the feeding pipe 4. The nozzle design is reduced from the inner diameter of the pipe φ50 to φ12. Under the same gas pressure conditions, the gas flow rate is accelerated, the Laval effect is generated, and the upper part of the feeding nozzle 5 generates a greater negative pressure, further improving the feeding accuracy.

[0028] Furthermore, the feed port is arranged on the upper side of the feed pipe 4, and the feed nozzle 5 is arranged on the inner bottom surface opposite to the feed port, so as to ensure that all the materials are fed into the mechanical mill main unit 2.

[0029] Furthermore, the feed port is provided with a feed pipe 41, and the feed pipe 41 extends into the feeding pipe 4. The material is made as close as possible to the feed airflow of the feeding nozzle 5 to avoid loss due to diffusion, thereby improving the feeding accuracy.

[0030] Furthermore, the feeding pipe 4 and the feeding nozzle 5 are arranged parallel to each other to prevent the material from cycloning or hitting the pipe wall and splashing.

[0031] Furthermore, the length of the feed pipe 41 extending into the feeding pipe 4 is 1 / 2-2 / 3 of the inner diameter of the feeding pipe 9 .

[0032] Furthermore, the diameter of the feeding nozzle 5 is smaller than the diameter of the feeding pipe 4 .

[0033] Furthermore, the diameter of the air pipe 8 is larger than the diameter of the feeding nozzle 5. The air flow velocity is increased.

[0034] Furthermore, the mechanical mill main unit 2 is connected to an induced draft fan 10 to provide negative pressure inside the mechanical mill main unit 2, so that the material can enter the main unit more smoothly.

[0035] Furthermore, the mechanical mill main unit 2 and the feeding pipe 4, the feeding pipe 4 and the feeding nozzle 5, and the feeding pipe 9 and the feeding pipe 4 are connected by flanges or clamps, which are convenient for disassembly and assembly, maintenance and replacement.

[0036] The air pipe 8 of the device can be modified from the original dehumidification air pipe 8 of the equipment and transferred to the feeding nozzle 5. The feeding nozzle 5 is designed to replace the spiral feeding device on the original equipment, and the controller 7 changes the original dehumidification air of the equipment into the feeding air source.

[0037] The operating steps of this application's pneumatic feeding method are as follows:

[0038] The PLC of the controller 7 automatically starts the program to control the feeding valve 6 to open, and the compressed air is blown into the feeding pipe 4 through the air pipe 8 and the feeding nozzle 5, and the material is blown into the mechanical mill host 2, and the star valve 3 controls the unloading speed of the silo hopper 1.

[0039] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A feeding mechanism of a mechanical pulverizer, characterized in that: It includes a silo hopper, a mechanical mill main unit, a star-shaped valve, a feeding pipe, a feeding nozzle, a feeding valve and a controller. The star-shaped valve is arranged at the lower end of the silo hopper, one end of the feeding pipe is connected to the side of the mechanical mill main unit, the feeding nozzle is connected to the other end of the feeding pipe, the feeding nozzle is connected to the feeding valve through an air pipe, a feeding port is arranged on the side of the feeding pipe, and a feeding pipe is arranged between the outlet of the star-shaped valve and the feeding port; the mechanical mill main unit, the star-shaped valve and the feeding valve are connected to the controller.

2. A feeding mechanism for a mechanical pulverizer according to claim 1, characterized in that: The feeding nozzle extends into the feeding pipe.

3. A feeding mechanism of a mechanical pulverizer according to claim 1, characterized in that: The feed inlet is arranged on the upper side of the feed pipe, and the feed nozzle is arranged on the inner bottom surface opposite to the feed inlet.

4. A feeding mechanism for a mechanical pulverizer according to claim 3, characterized in that: The feed port is provided with a feed pipe, and the feed pipe extends into the feeding pipeline.

5. A feeding mechanism for a mechanical pulverizer according to claim 1 or 3, characterized in that: The feeding pipe and the feeding nozzle are arranged parallel to each other.

6. A feeding mechanism for a mechanical pulverizer according to claim 4, characterized in that: The length of the feeding pipe extending into the feeding pipe is 1 / 2-2 / 3 of the inner diameter of the feeding pipe.

7. A feeding mechanism for a mechanical pulverizer according to claim 1 or 2, characterized in that: The caliber of the feeding nozzle is smaller than the caliber of the feeding pipe.

8. A feeding mechanism for a mechanical pulverizer according to claim 1, characterized in that: The diameter of the air pipe is larger than the diameter of the feeding nozzle.

9. A feeding mechanism for a mechanical pulverizer according to claim 1, characterized in that: The mechanical mill main machine is connected with an induced draft fan.

10. A feeding mechanism for a mechanical pulverizer according to claim 1 or 9, characterized in that: The mechanical mill main machine and the feeding pipe, the feeding pipe and the feeding nozzle, and the feed pipe and the feeding pipe are connected by flanges or clamps.

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