Mineral powder bin with quantitative discharging function

Abstract

The utility model discloses a mineral powder bin with a quantitative discharging function, which belongs to the field of mineral powder bins and comprises a variable-frequency discharging structure, a bin discharging pipe, a hollow intercepting structure, a fixed-frequency motor, a lower driving shaft, a quantitative roller, a quantitative groove, an upper material level detector and a lower material level detector. Discharging is conducted through the variable-frequency discharging structure on the stock bin discharging pipe, discharging downwards moves to impact the hollowed-out intercepting structure, after impact of the hollowed-out intercepting structure, the materials are dispersed and fall into the quantitative groove in the quantitative roller below, during primary use, the fixed-frequency motor does not work, and when the discharging level detector detects that material signals cover, the fixed-frequency motor starts to work; when the height of the material is higher than the upper material level detector, the variable-frequency discharging structure reduces the discharging speed, and when the height of the material is lower than the lower material level detector, the variable-frequency discharging structure increases the discharging speed, so that the height of the material above the quantitative groove is controlled to be within a certain range; and quantitative discharging of the mineral powder can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of mineral powder silos, and in particular to a mineral powder silo with quantitative feeding. Background Technology

[0002] In the process of preparing green pellets in the smelting industry, various powdered mineral materials need to be weighed and mixed through a batching system. However, it is impossible to directly measure and record the feed rate during the feeding and unloading processes. Therefore, those skilled in the art have provided an automatic metering and feeding device for mineral powder silos to solve the problems mentioned in the background art.

[0003] In the prior art, CN215363038U describes an automatic metering and feeding device for mineral powder silos, which includes a main shaft, a support on the outside of the main shaft, a rotary metering groove fixedly sleeved on the main shaft, and a material level detector fixedly installed on the support.

[0004] The above technical solution uses a rotating metering tank to contain mineral powder and rotate it downwards to achieve quantitative measurement of mineral powder. However, in actual use, due to the different depths of mineral powder in the upper hopper, when the mineral powder is deeper, the internal stress of the mineral powder is greater, resulting in a higher density. When the mineral powder is shallower, the density of the mineral powder decreases accordingly, which leads to errors in the method of quantitative measurement of mineral powder by volume. Utility Model Content

[0005] The purpose of this invention is to solve the problems mentioned in the background art by designing a quantitative feeding silo for mineral powder.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: a quantitative feeding silo for mineral powder includes a frequency conversion feeding structure, a silo discharge pipe, a hollow interception structure, a fixed frequency motor, a lower drive shaft, a quantitative roller, a quantitative groove, an upper material level detector, and a lower material level detector. The frequency conversion feeding structure is installed on the upper part of the silo discharge pipe. A hollow interception structure is installed below the frequency conversion feeding structure on the silo discharge pipe. A fixed frequency motor is installed below the hollow interception structure on the silo discharge pipe. A lower drive shaft is installed on the output end of the fixed frequency motor. A quantitative roller is installed on the lower drive shaft. Multiple quantitative grooves are opened on the quantitative roller. An upper material level detector and a lower material level detector are respectively installed vertically on the inner wall of the silo discharge pipe between the frequency conversion feeding structure and the quantitative roller.

[0007] Furthermore, the variable frequency feeding structure includes a variable frequency motor, an upper drive shaft, a feeding roller, and a feeding trough. The variable frequency motor is fixedly installed on the upper part of the material discharge pipe of the hopper. An upper drive shaft is fixedly installed on the output end of the variable frequency motor. A feeding roller is installed on the upper drive shaft. Multiple feeding troughs are opened on the feeding roller.

[0008] Furthermore, the hollowed-out interception structure is a grid composed of multiple spaced-apart rod-shaped structures.

[0009] Furthermore, the upper and lower material level detectors are capacitive level gauges.

[0010] Furthermore, the feeding trough and the metering trough have the same volume.

[0011] Beneficial effects:

[0012] This invention provides a quantitative feeding silo for mineral powder, which has the following advantages: Through its structural design, the device feeds mineral powder via a frequency-controlled feeding structure on the silo's discharge pipe. The material moves downwards, impacting a perforated interception structure. After impact, the powder disperses and falls into a quantitative groove on the quantitative roller below. Initially, the fixed-frequency motor does not operate. Once the material level detector detects the material level, the fixed-frequency motor starts working. When the material height is higher than the upper level detector, the frequency-controlled feeding structure reduces the feeding speed; when the material height is lower than the lower level detector, the frequency-controlled feeding structure increases the feeding speed, thereby controlling the material height above the quantitative groove within a certain range. At this point, the rotation angle of the quantitative groove driven by the metering fixed-frequency motor achieves quantitative discharge of the mineral powder. Compared to existing technologies that use volume for quantitative measurement, this device controls the stacking height of the mineral powder to be relatively constant after secondary discharge, thus increasing quantitative accuracy and reducing the impact of density changes caused by internal pressure on quantitative accuracy. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the quantitative feeding mineral powder silo described in this utility model;

[0014] Figure 2 This is a schematic diagram of the right-side angle structure of the quantitative feeding mineral powder silo described in this utility model;

[0015] Figure 3 This is a schematic diagram of the rear angle structure of the quantitative feeding ore powder silo described in this utility model.

[0016] In the diagram, 1 is the material discharge pipe of the hopper; 2 is the fixed frequency motor; 3 is the lower drive shaft; 4 is the quantitative roller; 5 is the quantitative trough; 6 is the upper material level detector; 7 is the lower material level detector; 8 is the variable frequency motor; 9 is the upper drive shaft; 10 is the lower material roller; 11 is the lower material trough; and 12 is the grid. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0018] In the description of this utility model, it should be noted that the terms "upper / lower end," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "set / set up," "sleeve," "connection," etc., should be interpreted broadly. For example, "connection" 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 a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] Please see Figure 1-3 This utility model provides a technical solution: a quantitative feeding silo for mineral powder, including a frequency conversion feeding structure, a silo discharge pipe 1, a hollow interception structure, a fixed frequency motor 2, a lower drive shaft 3, a quantitative roller 4, a quantitative groove 5, an upper material level detector 6, and a lower material level detector 7. The frequency conversion feeding structure is installed on the upper part of the silo discharge pipe 1. The hollow interception structure is installed below the frequency conversion feeding structure on the silo discharge pipe 1. The fixed frequency motor 2 is installed below the hollow interception structure on the silo discharge pipe 1. The lower drive shaft 3 is installed on the output end of the fixed frequency motor 2. The quantitative roller 4 is installed on the lower drive shaft 3. The quantitative roller 4 has multiple quantitative grooves 5. The upper material level detector 6 and the lower material level detector 7 are respectively installed vertically on the inner wall of the silo discharge pipe 1 between the frequency conversion feeding structure and the quantitative roller 4.

[0021] In this utility model, the variable frequency feeding structure includes a variable frequency motor 8, an upper drive shaft 9, a feeding roller 10, and a feeding trough 11. The variable frequency motor 8 is fixedly installed on the upper part of the material discharge pipe 1 of the hopper. The upper drive shaft 9 is fixedly installed on the output end of the variable frequency motor 8. The feeding roller 10 is installed on the upper drive shaft 9. Multiple feeding troughs 11 are opened on the feeding roller 10. When working, the variable frequency motor 8 drives the upper drive shaft 9 to rotate. The rotation of the upper drive shaft 9 drives the feeding roller 10 and then drives the feeding trough 11 to rotate, thereby feeding. The feeding speed is changed by changing the rotation speed of the variable frequency motor 8.

[0022] In this invention, the hollowed-out interception structure is a grid 12 composed of multiple spaced rod-shaped structures, which disperses the mineral powder when it passes through, making it easier to re-accumulate it later.

[0023] In this invention, the upper material level detector 6 and the lower material level detector 7 are capacitive level gauges, so that when the mineral powder covers the upper material level detector 6 or the lower material level detector 7, it is determined that the position of the mineral powder has reached this height.

[0024] In this invention, the feeding trough 11 and the metering trough 5 have the same volume, which facilitates the adaptation of the feeding flow rate.

[0025] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical connections between the various electrical components are completed in sequence. The detailed connection methods are well-known technologies in the field. The following mainly introduces the working principle and process, and will not describe the electrical control further.

[0026] In this implementation plan:

[0027] Material is fed through the variable frequency feeding structure on the discharge pipe 1 of the hopper. The material moves downward and impacts the hollow interception structure. After being impacted by the hollow interception structure, it disperses and falls into the quantitative groove 5 on the quantitative roller 4 below. When used for the first time, the fixed frequency motor 2 does not work. After the material level detector 7 detects the material signal coverage, the fixed frequency motor 2 starts to work. When the material height is higher than the upper material level detector 6, the variable frequency feeding structure reduces the feeding speed. When the material height is lower than the lower material level detector 7, the variable frequency feeding structure increases the feeding speed, thereby controlling the material height above the quantitative groove 5 within a certain range. At this time, the quantitative discharge of mineral powder can be achieved by rotating the quantitative groove 5 through the metering fixed frequency motor 2.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quantitative mineral powder feeder bin, comprising a variable frequency feeding structure, a bin discharge pipe (1), a hollow interception structure, a fixed frequency motor (2), a lower drive shaft (3), a quantitative roller (4), a quantitative groove (5), an upper position detector (6), and a lower position detector (7), characterized in that, The variable frequency unloading structure is installed on the upper part of the bin discharge pipe (1), a hollow intercepting structure is installed below the variable frequency unloading structure on the bin discharge pipe (1), a fixed frequency motor (2) is installed below the hollow intercepting structure on the bin discharge pipe (1), a lower drive shaft (3) is installed on the output end of the fixed frequency motor (2), a constant roll (4) is installed on the lower drive shaft (3), a plurality of constant grooves (5) are formed on the constant roll (4), an upper material position detector (6) and a lower material position detector (7) are respectively installed on the inner wall of the bin discharge pipe (1) and are distributed below the variable frequency unloading structure and the constant roll (4).

2. The dosed mineral powder bin according to claim 1, characterized in that, The variable frequency unloading structure includes a variable frequency motor (8), an upper drive shaft (9), a lower discharge roll (10) and a lower discharge groove (11), the variable frequency motor (8) is fixedly installed on the upper part of the bin discharge pipe (1), the upper drive shaft (9) is fixedly installed on the output end of the variable frequency motor (8), the lower discharge roll (10) is installed on the upper drive shaft (9), and a plurality of lower discharge grooves (11) are formed on the lower discharge roll (10).

3. The dosed mineral powder bin according to claim 1, characterized in that, The hollow intercepting structure is a grid (12) composed of a plurality of spaced rod-shaped structures.

4. The dosed mineral powder bin according to claim 1, characterized in that, The upper material position detector (6) and the lower material position detector (7) are capacitive material level meters.

5. The dosed mineral powder bin according to claim 2, characterized in that, The volume of the lower discharge groove (11) is the same as that of the constant groove (5).

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