Auger unloading device and auger

Abstract

The present application relates to the technical field of TMR feed preparation, and particularly discloses a stirring drum lifting device and a stirring drum. The stirring drum lifting device comprises a body and a countersunk hole penetrating through the body; the body is arranged in a straight trapezoidal cross section; and the countersunk hole is arranged vertically downward relative to the upper bottom surface of the body. The present application also provides a stirring drum comprising the stirring drum lifting device. Compared with the prior art, the present application solves the problem of frequent replacement of the bottom knife blade due to easy wear, and solves the problems of stirring dead angle and material wall sticking, thereby improving the TMR feed preparation quality and achieving the purpose of improving the service life of the stirring drum.

Description

Technical Field

[0001] This invention relates to the field of TMR feed preparation technology, and specifically discloses an auger feeding device and an auger. Background Technology

[0002] Currently, the auger inside the hopper of the TMR feed preparation machine is the core component for preparing TMR feed. During TMR feed preparation, the reducer drives the auger to rotate, and the bottom blades scoop up the material from the bottom of the hopper. As the auger rotates, the conical spiral blades push the material from the bottom to the top. During the ascent, the material is radially scattered along the auger blades due to centrifugal force before falling back to the bottom of the hopper. Due to the rotation of the auger, a continuous cycle of stirring, cutting, kneading, and mixing occurs. During this process, the auger blades and the auger bottom blades will continuously wear down.

[0003] Due to long-term wear, the gap between the bottom blade and the hopper wall will continue to increase. After about 3,000 hours of use, the material near the hopper wall can no longer be scooped up and mixed, forming stagnant material. This creates mixing dead zones and material sticking to the wall, which will lead to a decline in the quality of TMR feed.

[0004] Currently, auger blades are generally made of 16Mn steel plates, 16mm thick, which are heated and pressed into shape using a mold. However, auger blades made from 16Mn steel plates have poor wear resistance and a short service life. Tests show that these blades wear approximately 1.1mm after 1000 hours of use, with a maximum service life of 10,000 hours. Excessive wear on the blades will render the auger unusable.

[0005] Chinese patent CN209205498U discloses a spiral cone with dispersing, crushing, and mixing functions, including a central shaft, conical spiral blades fixedly connected to the central shaft, and a pusher plate below the spiral blades. This patent addresses the problems of biomass materials easily bridging and having poor flowability by dispersing, crushing, and mixing. However, this patent does not solve the problems of wear on the auger blades and the auger bottom blades, nor does it solve the problems of dead zones in mixing and material adhering to the walls. Summary of the Invention

[0006] To address the aforementioned shortcomings of existing technologies, this invention provides an auger lifting device that solves the problem of frequent blade wear and replacement, as well as the issues of dead zones in mixing and material adhesion to the walls, thereby improving the quality of TMR feed preparation. This invention also provides an auger incorporating the above-mentioned auger lifting device, which has a long service life.

[0007] To achieve the above objectives, the technical solution of the present invention is as follows:

[0008] The aforementioned auger lifting device includes a main body and a countersunk hole that penetrates the main body; the main body has a right-angled trapezoidal cross-section; the countersunk hole is perpendicular to the top surface of the main body and faces downwards.

[0009] One side of the body is an arc surface.

[0010] The elongated countersunk hole design allows for easy adjustment of the auger's bottom blades, solving the problem of frequent blade wear and replacement, as well as eliminating dead zones and material buildup, thus improving the quality of TMR feed preparation. The main body has a right-angled trapezoidal cross-section, with an inclined surface that aligns with the bottom blade design for easy material lifting. The curved surface aligns with the side of the bottom blades for easy lifting of material adhering to the walls. The elongated countersunk hole design allows for continued material lifting even after the bottom blades or curved surface wear down; adjusting the device radially outwards by 1-10mm allows for continued material lifting without the need for bottom blade replacement or maintenance.

[0011] Preferably, there are three countersunk holes; the countersunk holes are triangularly distributed, which is firmly fixed and ensures the stable operation of the device.

[0012] Preferably, two countersunk holes are provided on the inclined side of the body.

[0013] The present invention also provides an auger, including the aforementioned auger material lifting device.

[0014] Preferably, the auger lifting device is bolted to the edge of the auger's bottom blade; the arc-shaped surface is fitted to the side of the bottom blade; and the inclined surface of the main body is fitted to the bottom blade's cutting edge. The arc-shaped surface fitting to the bottom blade's side facilitates the rotation of the bottom blade within the hopper and allows for easy adjustment of the gap between the device and the hopper wall. The inclined surface fitting to the bottom blade's cutting edge facilitates the lifting of material by the bottom blade. When the bottom blade's cutting edge or the arc-shaped surface wears down, the auger lifting device is adjusted radially outwards.

[0015] The auger of the present invention also includes conical spiral blades, a column, a column end cap, and blades; the conical spiral blades are welded and fixedly mounted on the column, the column end cap is welded and fixedly mounted on the top of the column, the bottom blade is welded and fixedly mounted on the lower part of the bottom conical spiral blades, and 6-13 blades are fixedly mounted on the edge of the conical spiral blades by bolts, and the conical spiral blades are arranged in 3 layers.

[0016] in:

[0017] The method for preparing the conical helical blades of the auger includes the following steps:

[0018] (1) Using a heated mold to heat 45 # Steel plates are pressed into shape, and shot blasting is performed to remove the oxide layer to obtain the blade blank;

[0019] (2) Anti-deformation reinforcing ribs are set on the blade blank and tempering heat treatment is carried out;

[0020] (3) Remove the anti-deformation reinforcing ribs from the heat-treated blade blank to obtain the conical spiral blade for the auger.

[0021] Preferably, anti-deformation reinforcing ribs are provided on both the front and bottom surfaces of the blade blank.

[0022] The heat treatment process described is a conventional operation.

[0023] The beneficial effects of this invention are as follows:

[0024] In the above-described solution, the present invention provides an auger feeding device, comprising a main body and a countersunk hole penetrating the main body; the main body has a right-angled trapezoidal cross-section; the countersunk hole is perpendicular to the top surface of the main body and faces downwards. The countersunk hole facilitates adjustment on the auger's bottom blades, solving the problem of frequent blade wear and replacement, and also addresses the issues of dead zones in mixing and material adhesion to the walls, thereby improving the quality of TMR feed preparation.

[0025] This invention also provides an auger including an auger lifting device. When the auger rotates and mixes the material, since the auger lifting device is installed on the bottom blade, close to the inner edge of the hopper wall, it increases the thickness of the outer edge of the bottom blade and has the same wedge angle as the bottom blade. The material close to the hopper wall will be scooped up by the auger lifting device, which enhances the flowability of the material and prevents the generation of mixing dead corners and wall adhesion, thus achieving the purpose of solving the problems of mixing dead corners and material adhesion.

[0026] The hardness of 16Mn material blades is HB128-140. Compared with the hardness of 16Mn material blades, the present invention uses 45. # The hardness of the conical spiral blades obtained by quenching and tempering steel is HB332-370, which is 2.60-2.64 times that of the blades made of 16Mn material, thus solving the problem of easy deformation of conical spiral blades during quenching.

[0027] The auger with 16Mn blades experienced approximately 2.75 mm of blade thickness wear after 2500 hours of operation, and approximately 1.10 mm of wear after 1000 hours of operation; while the auger using the 45mm blades of this invention... # After 2500 hours of operation, the wear of the steel-tempered conical spiral blades was approximately 1.04 mm, and after 1000 hours of operation, the wear was approximately 0.42 mm. Therefore, this invention uses 45... # The wear resistance of the conical spiral blades obtained by quenching and tempering steel is more than 2.62 times that of the blades made of 16Mn material, and the service life of the auger reaches more than 26,000 hours, thus achieving the goal of improving the service life of the auger. Attached Figure Description

[0028] Figure 1 This is an isometric schematic diagram of an embodiment of the present invention;

[0029] Figure 2 This is a cross-sectional schematic diagram of an embodiment of the present invention;

[0030] Figure 3 This is an isometric schematic diagram of the auger according to an embodiment of the present invention;

[0031] Figure 4 A front view of the conical helical blade after welding the anti-deformation reinforcing ribs;

[0032] Figure 5 A schematic diagram of the reverse side of the conical helical blade after welding the anti-deformation reinforcing ribs;

[0033] Explanation of reference numerals in the attached figures:

[0034] 1-Body, 2-Counterhead hole, 3-Bottom cutter, 4-Conical spiral blade, 5-Column, 6-Column end cap, 7-Blade; 8-Anti-deformation reinforcing rib;

[0035] 101 - Curved surface, 102 - Inclined surface;

[0036] 301 - Blade. Detailed Implementation

[0037] The present invention will be further described below with reference to embodiments.

[0038] Example 1

[0039] like Figure 1 , 2 As shown, the auger lifting device includes a body 1 and a countersunk hole 2 penetrating the body 1. The body 1 has a right-angled trapezoidal cross-section. The countersunk hole 2 is perpendicular to the bottom surface of the body 1 and faces downwards. One side of the body 1 is an arc-shaped surface 101. The countersunk hole 2 is elongated. The elongated countersunk hole 2 facilitates adjustment on the auger's bottom blade 3, solving the problem of frequent replacement of the blade 301 due to wear, and also addresses the issues of dead zones in mixing and material adhering to the wall, thus improving the quality of TMR feed preparation. The right-angled trapezoidal cross-section and the inclined surface 102 facilitate the fitting of the blade 301, while the upper bottom surface facilitates material lifting. The arc-shaped surface 101 facilitates the fitting of the side of the bottom blade 3, making it easy to lift material adhering to the wall. The elongated countersunk hole 2 allows for continued material lifting by radially adjusting the bottom blade 3 after the blade 301 or the arc-shaped surface 101 wears down, without requiring replacement or maintenance of the bottom blade 3.

[0040] There are three countersunk holes 2; the countersunk holes 2 are triangularly distributed, which is secure and ensures the stable operation of the device. Two countersunk holes 2 are provided on the side of the inclined surface 102 of the main body 1.

[0041] like Figure 3 As shown, this embodiment of the invention also provides an auger, including the aforementioned auger lifting device, and further including a bottom blade 3, conical spiral blades 4, a column 5, a column end cap 6, and blades 7. The conical spiral blades 4 are welded and fixedly mounted on the column 5, with three layers of conical spiral blades 4. The column end cap 6 is welded and fixedly mounted on the top of the column 5. The bottom blade 3 is welded and fixedly mounted on the lower part of the bottom conical spiral blades 4. The body 1 of the auger lifting device is bolted to the edge of the bottom blade 3. The inclined surface 102 is set to match the cutting edge 301 of the bottom blade 3, and the arc surface 101 is set to match the side of the bottom blade 3. After the cutting edge 301 or the arc surface 101 of the bottom blade 3 wears, the auger lifting device is adjusted radially outward. Six blades 7 are bolted to the edge of the conical spiral blades 4 for material cutting and cleaning of the wall. This device increases the service life of the bottom blade 3 and also increases the service life of the auger, solves the problems of mixing dead corners and material wall adhesion, and improves the quality of TMR feed preparation.

[0042] in:

[0043] The method for preparing the conical helical blade 4 of the auger includes the following steps:

[0044] (1) Using a heated mold to heat 45 # Steel plates are pressed into shape, and shot blasting is performed to remove the oxide layer to obtain the blade blank;

[0045] (2) Weld anti-deformation reinforcing ribs 8 on the front and bottom surfaces of the blade blank, and perform heat treatment;

[0046] (3) Remove the anti-deformation reinforcing rib 8 from the heat-treated blade blank to obtain the conical helical blade 4 for the auger. A schematic diagram of the front and back of the conical helical blade 4 after welding the anti-deformation reinforcing rib is shown below. Figure 4 , Figure 5 As shown.

[0047] Comparative Example 1

[0048] 45 in Example 1 # The steel plate was replaced with 16Mn material, and the remaining steps were the same as in Example 1.

[0049] Comparative Example 2

[0050] No anti-deformation reinforcing ribs 8 are welded to the front and bottom surfaces of the blade blank; the remaining steps are the same as in Example 1.

[0051] The hardness of the conical helical blades in Example 1 and Comparative Example 1 was tested, and the data are shown in Table 1.

[0052] Table 1 Hardness Data

[0053] Example 1 Comparative Example 1 Hardness HB 345 131

[0054] By comparing Example 1 and Comparative Example 1, it can be seen that, compared with the hardness of 16Mn material blades, the present invention uses 45... # The hardness of the conical spiral blades obtained by quenching and tempering steel is 2.63 times that of the blades made of 16Mn material, which solves the problem of easy deformation of conical spiral blades during quenching.

[0055] As can be seen from Comparative Example 2, the conical spiral blade deforms without welding the anti-deformation reinforcing rib 8.

[0056] The conical spiral blades from Example 1 and Comparative Example 1 were installed on the auger, and their thickness wear and service life were tested. The data are shown in Table 2.

[0057] Table 2 Data on Thickness Wear and Service Life of Conical Helical Blades

[0058]

[0059] Comparing Example 1 and Comparative Example 1, it can be seen that the auger using 16Mn material blades experienced a blade thickness wear of 2.75 mm after 2500 hours of operation, and a wear of 1.11 mm after 1000 hours of operation; while the auger using the 45mm blade of the present invention... # The conical helical blades obtained by quenching and tempering steel showed a blade thickness wear of 1.01 mm after 2500 hours of operation, and 0.39 mm after 1000 hours. Based on the above data, it can be concluded that the present invention uses 45... # The wear resistance of the conical spiral blades obtained by quenching and tempering steel is more than 2.62 times that of blades made of 16Mn material, thus achieving the goal of improving the service life of the auger.

Claims

1. A flight, characterized in that, The utility model provides a kind of stirrer lifting device, including conical spiral blade (4), stand (5), stand head (6) and blade (7);The stirrer lifting device includes body (1) and countersunk hole (2) arranged through body (1);Body (1) is arranged as right trapezoid in section;Countersunk hole (2) is arranged vertically to the upper bottom surface of body (1) and is arranged downward, and one side surface of body (1) is arc surface (101);The countersunk hole (2) is arranged as long strip;The countersunk hole (2) is three;The countersunk hole (2) is distributed in triangle;The stirrer lifting device is arranged at the edge of the bottom knife (3) of stirrer by bolt;Arc surface (101) is arranged in cooperation with the side edge of bottom knife (3);The inclined surface (102) of body (1) is arranged in cooperation with the cutting edge (301) of bottom knife (3), and after the cutting edge (301) of bottom knife (3) is worn or arc surface (101) is worn, the stirrer lifting device is adjusted along the radial direction outward;Conical spiral blade (4) is fixedly arranged on stand (5) by welding, stand head (6) is fixedly arranged on the top of stand (5) by welding, bottom knife (3) is fixedly arranged on the lower part of bottom layer conical spiral blade (4) by welding, and 6-13 blades (7) are fixedly arranged on the edge of conical spiral blade (4) by bolt, and conical spiral blade (4) is arranged as 3 layers; The preparation method of the conical spiral blade (4) of the stirrer includes the following steps: (1) The 45 # steel plate material is pressed into shape by using a heating mold, and the oxide layer is removed by shot blasting treatment to obtain a blade blank. (2) setting deformation prevention reinforcing rib (8) on blade embryo, and performing quenching and tempering heat treatment; (3) removing deformation prevention reinforcing rib (8) from blade embryo after quenching and tempering heat treatment, to obtain conical spiral blade (4) for stirrer.

2. The auger of claim 1, wherein, Two are arranged on the side of the inclined surface (102) of body (1) close to the countersunk hole (2).

3. The auger of claim 1, wherein, Deformation prevention reinforcing rib (8) is arranged on the front surface and the bottom surface of blade embryo.

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