Modified powder selecting equipment

Abstract

The utility model relates to a modified powder selecting device which comprises a powder selecting box, a powder outlet and a feed inlet are arranged on the powder selecting box, an air film body is arranged in the powder selecting box, the air film body is breathable, and the air film body is communicated with an external blast device. The air film body is used for scattering airflow blown in by the air blowing equipment, so that the airflow can be input into the powder selecting box in a fine, slow and stable mode, the flow direction of air in the powder selecting box is changed, and then fine powder selecting is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a powder selecting equipment technical field, especially a modified powder selecting equipment. BACKGROUND

[0002] The powder selecting equipment is a mechanical equipment for selecting powder, which is usually used in the powder processing process to screen, separate and grade the powder raw materials to obtain powder products with different particle size distributions. In the industry, "mesh" is a unit representing the size of particle screening, and its definition is the number of holes on the screen per inch (25.4 mm). The larger the mesh number is, the finer the particles are, and the smaller the screen hole is. In the preparation and processing of powder, "mesh" is often used to describe the fineness of the powder. As a kind of powder material with special application requirements, the fineness requirement of ultra-fine powder is very high, so a screen with a mesh number of 800 or more is usually used for screening.

[0003] The existing powder selecting equipment cannot well select ultra-fine powder with a mesh number of 800 or more. The inventor previously submitted a new powder selecting equipment with an application number of CN202420128054. In this technical solution, the inventor selects powder by blowing air through the air blowing plate and the air cap. Although the structure is simple and flexible, the air cap still has a problem of excessive air flow. The blown air flow cannot effectively select ultra-fine powder with a mesh number of 800 or more, and needs to be screened twice, which is too time-consuming. Therefore, further improvement is needed. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a modified powder selecting equipment to solve the above problems.

[0005] A modified powder selecting equipment includes a powder selecting box, an outlet and an inlet are arranged on the powder selecting box, an air film body is installed in the powder selecting box, the air film body is air-permeable, and the air film body is in communication with a blowing device outside.

[0006] Preferably, the outlet is in communication with a negative pressure dust collection device through a pipeline.

[0007] Preferably, the inner bottom of the powder selecting box is designed in a conical shape.

[0008] Preferably, the bottom of the powder selecting box is also provided with a sand outlet channel.

[0009] Preferably, the powder selecting box is composed of steel plates.

[0010] The utility model has the advantages that the air film body "scatters" the air flow blown by the blowing device, so that the air flow can be input into the powder selecting box in a fine, slow and stable manner, the air flow direction in the powder selecting box is changed, and fine powder selection is realized. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 A schematic view of a modified powder selecting device structure is provided. DETAILED DESCRIPTION

[0012] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced without some or all of these details. In other instances, well known process steps have not been described in detail in order to avoid unnecessarily obscuring the present application. It will be apparent to one skilled in the art that the present application can be practiced without some or all of these details. In other instances, well known process steps have not been described in detail in order to avoid unnecessarily obscuring the present application. The specific embodiments of the present application are shown in the drawings and described below.

[0013] It is to be understood that when an element is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements can be present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0014] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0015] As shown in the drawings, Figure 1 A modified powder selecting device is provided, which includes a powder selecting box 1, wherein a powder outlet 11 and a feeding inlet 12 are arranged on the powder selecting box 1, and a gas film body 2 is installed in the powder selecting box 1. The gas film body 2 is gas permeable, and is in communication with a blast equipment outside. Specifically, in the present embodiment, the powder selecting box 1 is a sealed structure, and its shape is not limited, which can be square, circular or other shapes. The powder outlet 11 and the feeding inlet 12 are arranged on the powder selecting box 1. It can be understood that the feeding inlet 12 is used for feeding, i.e. using a conveying mechanism to convey raw materials into the powder selecting box 1. In the powder selecting box 1, a plurality of gas film bodies 2 are arranged in parallel, and the gas film bodies 2 are in communication with the blast equipment outside. Figure 1In the figure, the dotted arrow represents the flow direction of the raw material, and the solid arrow represents the gas flow direction. It can be understood that the particle size of the particles in the raw material just input into the powder selection box 1 is different, from tens of microns to thousands of microns, and the customer requires the selected ultrafine powder to be 1500 microns or more, so fine powder selection is required. In the previous air blowing design, the gas is directly blown into the air box for powder selection. Because the gas directly acts in the air box, it is difficult to control the gas, and it is easy to produce a flocculation flow in the powder selection box. It is impossible to finely select the ultrafine powder of 1000 microns or more, and only the powder of hundreds of microns or more can be selected. In order to realize the one-time selection of the ultrafine powder of 1500 microns or more, a gas film body 2 is added in the powder selection box 1. The gas film body 2 is in the form of a capsule. When the air blowing device arranged outside the powder selection box 1 is communicated with the gas film body 2 through a pipeline, the air blowing device blows high-pressure gas into the gas film body 2. The high-pressure gas can overflow from the tiny pores on the surface of the gas film body 2 and blow air when the raw material enters from the feeding port 12 and falls under the action of its own gravity. The ultrafine powder can be suspended in the powder selection box 1 under the action of the air pressure of the gas film body 2. It can be known that under the action of the air pressure and the gravity of the powder itself, the powder in the powder selection box 1 is stratified according to the particle size of the powder itself, that is, the weight. The smallest fine powder of the smallest particles floats at the uppermost end, that is, it can be blown out through the discharge port 11 by the air blowing, and the powder selection is completed. We blow air through the gas film body 2. The gas film body 2 can “scatter” the airflow blown by the air blowing device, so that the airflow can be thin, slow, and stable. The airflow in the powder selection box 1 is changed, and fine powder selection is realized.

[0016] Specifically, the powder outlet 11 is communicated with the negative pressure dust collection equipment through a pipeline. The negative pressure dust collection equipment generates negative pressure to suck the ultrafine powder in the powder selection box 1 into the negative pressure dust collection equipment from the powder outlet 11. Moreover, the negative pressure dust collection equipment is internally provided with a high-efficiency filtering device to ensure that the sucked ultrafine powder can be effectively separated, and the clean air is discharged.

[0017] As shown in Figure 1 , the inner bottom of the powder selection box 1 is designed in a conical shape. The conical inner bottom is used to converge the remaining raw material deposited after powder selection.

[0018] As shown in Figure 1 , the bottom of the powder selection box 1 is also provided with a sand outlet channel 13. Specifically, the sand outlet channel 13 is communicated with the lowest point of the conical inner bottom, and is used to discharge the raw material after the ultrafine powder is selected. Specifically, the raw material can be directly discharged into the crushing mechanism through a conveying mechanism, and then recycled into the powder selection box 1 for ultrafine powder selection after secondary crushing, to complete the cycle and not waste raw materials.

[0019] As shown in Figure 1As shown, the powder selecting box 1 is composed of steel plates which are spliced together, the splicing strength of the steel plates is high, the cost is low, and the overall sealing of the powder selecting box 1 can be effectively ensured.

[0020] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which all belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A retrofit powder selection device, characterized by: The application relates to a powder selecting box, which is provided with a powder outlet and a feeding inlet, and is internally provided with a gas membrane body.

2. A retrofit powder sorting apparatus as claimed in claim 1, characterized in that: The powder outlet is communicated with a negative pressure dust collecting device through a pipeline.

3. A retrofit powder sorting apparatus as claimed in claim 1, characterized in that: The inner bottom of the powder selecting box is designed in a conical shape.

4. A retrofitting powder sorting apparatus according to claim 1 or 3, characterized in that: The bottom of the powder selecting box is further provided with a sand outlet channel.

5. A retrofit powder sorting apparatus as claimed in claim 1, characterized in that: The powder selecting box is composed of steel plate splicing welding.

Images