Air control system for cleaning floating powder of flour mill

Abstract

The invention discloses an air control system for cleaning floating powder of a flour mill, and relates to the technical field of flour mills, the air control system comprises a drainage pipe, the top end of the drainage pipe is provided with an air volume adjusting device, the air volume adjusting device is arranged in an observation cylinder, the bottom port of the drainage pipe is communicated with a blanking hopper, and the blanking hopper is communicated with a negative pressure air suction pipe. The grinding roller is simple in structure and convenient to install, floating powder and ash content bypass a grinding system of the flour mill by communicating the drainage pipe with the discharging hopper, the surface roughness of the grinding roller is guaranteed, the grinding roller cannot be affected by the floating powder and the ash content to become smooth, and the service life of the grinding roller is prolonged; therefore, materials can be fully ground, the phenomenon of material tabletting is reduced, and the quality of discharged powder is improved.

Description

Technical Field

[0001] The invention relates to the technical field of grinding mills, and in particular to an air control system for cleaning floating powder in a grinding mill. Background Art

[0002] When the mill is grinding, the input material often carries a large amount of floating powder, ash and other dust. After entering the grinding system, these dusts will adhere to the surface of the grinding roller, affecting its surface roughness and making it smooth, which will cause the material to be pressed and affect the powder quality. Summary of the invention

[0003] The purpose of the present invention is to provide an air control system for cleaning floating powder in a grinding mill, so as to solve the problem mentioned in the background technology that a large amount of floating powder and ash will adhere to the surface of the grinding roller after entering the grinding system, affecting its surface roughness, which will lead to material tableting and affect the powder quality.

[0004] The present invention adopts the following technical solution:

[0005] The invention discloses an air control system for cleaning floating powder of a grinding mill, comprising a drainage pipe, the top of which is provided with an air volume regulating device, the air volume regulating device being arranged in an observation tube; the bottom port of the drainage pipe is connected with a lower hopper, and the lower hopper is connected with a negative pressure suction pipe.

[0006] Furthermore, the air volume regulating device comprises an regulating end and a fixed end, and the regulating end is rotatably connected and matched with the fixed end;

[0007] The fixed end is arranged on the inner wall of the observation tube, and a first air port is arranged on the fixed end, and the first air port is communicated with the feeding space in the observation tube;

[0008] The adjusting end is a cylindrical structure with an open bottom and a closed top. The adjusting end is arranged in the inner cavity of the cylinder wall of the observation tube. The adjusting end is sealingly and rotatably connected to the upper end of the drainage tube. A second air outlet is arranged on the side wall of the adjusting end. When the adjusting end is rotated to a certain angle along the axis, the second air outlet is connected to the first air outlet.

[0009] Furthermore, a knob is fixedly connected to the top of the adjustment end, and the knob is rotatably arranged on the outer wall of the observation tube and extends to the outside.

[0010] Furthermore, the drainage pipe is arranged outside the grinding system.

[0011] Furthermore, the drainage pipe is arranged on a support frame, and the support frame is fixedly connected in the grinding mill.

[0012] Compared with the prior art, the beneficial technical effects of the present invention are:

[0013] The invention has a simple structure and is easy to install. By connecting the drainage pipe with the lower hopper and the negative pressure suction structure, floating powder and ash can bypass the grinding system of the grinding mill, thereby ensuring the surface roughness of the grinding roller, which will not be affected by the floating powder and ash and become smooth, thereby increasing the service life of the grinding roller; the material can be fully ground, the material tableting phenomenon is reduced, and the powder output quality is improved; and through the control of the air volume regulating device, the material is prevented from being sucked away when the negative pressure wind is too large. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the structure of the air control system for cleaning floating powder in a grinding mill according to the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of an observation tube and an air volume regulating device in an air control system for cleaning floating powder in a grinding mill according to the present invention;

[0017] Figure 3 The present invention is a schematic diagram of the structure of the regulating end and the fixed end of the air control system for cleaning floating powder in the grinding mill.

[0018] Explanation of the reference numerals: 1. Drainage pipe; 2. Air volume adjustment device; 2-1. Adjustment end; 2-1-1. Second air outlet; 2-1-2. Knob; 2-2. Fixed end; 2-2-1. First air outlet; 3. Observation tube; 3-1. Feeding space; 3-2. Inner cavity of tube wall; 4. Support frame; 5. Lower hopper; 6. Grinding system. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1 As shown, it is a partial structure of a grinding system 6 of a mill, a plurality of grinding rollers are arranged in the grinding system 6, an observation tube 3 connected thereto is arranged at the top of the grinding system 6, and a lower hopper 5 connected thereto is arranged at the bottom of the grinding system 6. Based on the structure of the grinding system 6 of the mill, this embodiment discloses a wind control system for cleaning floating powder of a mill, including a drainage pipe 1, the bottom port of the drainage pipe 1 is connected to the lower hopper 5, and the lower hopper 5 is connected to the negative pressure suction pipe. An air volume regulating device 2 is arranged at the top of the drainage pipe 1, and the air volume regulating device 2 is arranged in the observation tube 3. The observation tube 3 is the original structure of the mill, which is a prior art and will not be introduced in detail here.

[0021] In this embodiment, the drainage pipe 1 is arranged on the support frame 4, and the support frame 4 is fixedly connected in the mill. And the drainage pipe 1 is arranged outside the grinding system 6 to avoid interference with the grinding work.

[0022] like Figure 2 and Figure 3 As shown, the air volume regulating device 2 includes a regulating end 2-1 and a fixed end 2-2, and the regulating end 2-1 is rotatably connected and matched with the fixed end 2-2.

[0023] In this embodiment, the observation tube 3 includes a feeding space 3 - 1 for feeding materials and a tube wall cavity 3 - 2 formed by the shell of the observation tube 3 . An observation window is also provided on the side wall of the observation tube 3 .

[0024] The fixed end 2 - 2 is arranged on the inner wall of the observation tube 3 , and a first air port 2 - 2 - 1 is arranged on the fixed end 2 - 2 , and the first air port 2 - 2 - 1 is communicated with the feeding space 3 - 1 in the observation tube 3 .

[0025] The regulating end 2-1 is a cylindrical structure with an open bottom and a closed top. The regulating end 2-1 is arranged in the inner cavity 3-2 of the cylinder wall of the observation tube 3. The regulating end 2-1 is sealed and rotatably connected to the upper end of the drainage tube 1 through a rotating seal. A second air port 2-1-1 is arranged on the side wall of the regulating end 2-1. When the regulating end 2-1 rotates to a certain angle along the axis, the second air port 2-1-1 overlaps and communicates with the first air port 2-2-1, thereby connecting the drainage tube 1 with the feed space 3-1. The dust in the feed space 3-1 enters the drainage tube 1 through the first air port 2-2-1 and the second air port 2-1-1, and is finally sucked into the lower hopper 5. The ground material, together with the floating powder and ash, is screened and purified through a high-resolution screen.

[0026] The top of the adjustment end 2-1 is fixedly connected with a knob 2-1-2, which is rotatably arranged on the outer wall of the observation tube 3 and extends to the outside. Rotating the knob 2-1-2 can adjust the size of the overlapping area between the second air outlet 2-1-1 and the first air outlet 2-2-1, thereby controlling the dust suction force in the observation tube 3.

[0027] The action process of the present invention is as follows:

[0028] First, the material is put into the feeding space 3-1 of the observation tube 3. Due to gravity, the floating powder and ash will be swung up when the material is put in, and fill the feeding space 3-1. At this time, the negative pressure suction system of the grinding workshop generates negative pressure suction on the lower hopper 5 and the drainage pipe 1. The knob 2-1-2 is rotated to make the second air outlet 2-1-1 overlap and connect with the first air outlet 2-2-1. The floating powder and ash will be subjected to the negative pressure suction and sucked into the lower hopper 5 for the next step of screening and purification.

[0029] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An air control system for cleaning floating powder from a grinding mill, characterized by: The invention comprises a drainage pipe (1), wherein an air volume regulating device (2) is arranged at the top end of the drainage pipe (1), and the air volume regulating device (2) is arranged in an observation tube (3); a bottom end of the drainage pipe (1) is connected to a lower hopper (5), and the lower hopper (5) is connected to a negative pressure suction pipe.

2. The air control system for cleaning floating powder from a grinding mill according to claim 1, characterized in that: The air volume regulating device (2) comprises an regulating end (2-1) and a fixed end (2-2), wherein the regulating end (2-1) is rotatably connected and matched with the fixed end (2-2); The fixed end (2-2) is arranged on the inner wall of the observation tube (3), a first air port (2-2-1) is arranged on the fixed end (2-2), and the first air port (2-2-1) is connected to the feed space (3-1) in the observation tube (3); The regulating end (2-1) is a cylindrical structure with an open bottom and a closed top. The regulating end (2-1) is arranged in the inner cavity (3-2) of the cylinder wall of the observation cylinder (3). The regulating end (2-1) is rotatably connected to the upper end of the drainage tube (1) in a sealed manner. A second air port (2-1-1) is arranged on the side wall of the regulating end (2-1). When the regulating end (2-1) rotates to a certain angle along the axis, the second air port (2-1-1) is connected to the first air port (2-2-1).

3. The air control system for cleaning floating powder from a grinding mill according to claim 2, characterized in that: A knob (2-1-2) is fixedly connected to the top of the adjustment end (2-1), and the knob (2-1-2) is rotatably arranged on the outer wall of the observation tube (3) and extends to the outside.

4. The air control system for cleaning floating powder from a grinding mill according to claim 1, characterized in that: The drainage tube (1) is arranged outside the grinding system (6).

5. The air control system for cleaning floating powder from a grinding mill according to claim 1, characterized in that: The drainage pipe (1) is arranged on a support frame (4), and the support frame (4) is fixedly connected inside the grinding mill.

Images