Modularized T-shaped nail combined type potato rasping machine drum structure

Abstract

The utility model discloses a modular T-shaped nail combined type potato rasping machine drum structure, belongs to the technical field of agricultural machinery, and aims to solve the problems that a traditional potato rasping machine drum structure is complex in manufacturing process and high in maintenance cost, and nail bodies are difficult to replace. The drum structure comprises inverted-T-shaped section grooves uniformly distributed in the surface, modular T-shaped steel nails embedded in the grooves and nail removing holes penetrating through the axis of the drum. Through the clearance fit design of the inverted-T-shaped groove and the nail cap, radial movement of the nail body is limited, and rapid installation is allowed; and the nail removing hole is matched with an ejection tool to realize directional pushing, so that the locally damaged nail body can be quickly replaced, and overall disassembly is avoided. The T-shaped steel nail is of a strip nail structure, the exposed height of a nail point is 3-5 mm, a nail body is subjected to carburizing and quenching treatment (the hardness is larger than or equal to HRC60), and the abrasion resistance is remarkably improved. Through modular combination design, the rotary drum processing technology is simplified, the maintenance cost is reduced, meanwhile, the service life of the rotary drum is prolonged, and the rotary drum is suitable for efficient rasping of potato raw materials with different fiber contents such as potatoes and cassava.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of agricultural machinery, in particular to a drum structure for potato (such as potato, sweet potato, cassava, etc.) starch processing, specifically a drum structure based on modular T-shaped nail combination, aiming to solve the problems of complex manufacturing, high maintenance cost and whole replacement of local damage of the existing drum structure. BACKGROUND

[0002] The existing potato rubbing machine drum usually adopts A-shaped groove structure, and clamping strips and blades are installed in the groove to achieve potato rubbing. However, this structure has the following defects:

[0003] Complex manufacturing process: A-shaped groove needs to be precisely machined to fit the clamping strip, and the assembly process of the clamping strip and the blade is complicated;

[0004] High cost: The clamping strip and the blade need to be made of high-hardness wear-resistant material, resulting in high replacement cost of the parts;

[0005] Inconvenient maintenance: When the clamping strip or the blade is locally damaged, it needs to be replaced as a whole, causing waste of resources and loss of downtime.

[0006] Therefore, there is an urgent need for a drum structure that is simple in structure, low in maintenance cost and supports local replacement. SUMMARY

[0007] The purpose of the present application is to provide a modular T-shaped nail combination type potato rubbing machine drum structure, which optimizes the cooperation design of the drum groove and the T-shaped nail, realizes the quick installation, directional replacement and stable fixation of the nail body, and significantly reduces the processing and maintenance cost.

[0008] TECHNICAL SCHEME

[0009] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0010] 1. Drum main structure

[0011] The drum is a cylindrical structure, and the circumferential surface is uniformly distributed with inverted T-shaped cross-section grooves, which extend along the drum axis;

[0012] The groove bottom is provided with a notch clamping table for limiting the nail cap of the T-shaped steel nail, and the nail cap and the notch clamping table adopt gap fit (gap 0.1-0.3mm) to limit the longitudinal movement of the nail body along the radial direction of the drum;

[0013] A through-type nail removal hole is provided in the middle of the groove along the drum axis direction for inserting a ejector tool (such as a ejector pin) to directionally eject the damaged nail body.

[0014] 2. T-shaped steel nail design

[0015] The T-shaped steel nail is a row nail structure composed of a plurality of nail bodies arranged side by side, a nail cap is integrally formed with the nail body, and a nail tip vertically extends to the outer surface of the drum; the exposed height of the nail tip is 3-5mm (preferably 4mm), which can fully abrade the potato raw materials and reduce the processing resistance and nail body wear;

[0016] The nail body is made of high-carbon alloy steel material, and the surface is treated by carburizing and quenching, with a hardness of above HRC60, to improve the wear resistance.

[0017] 3. Modular combination and maintenance

[0018] When a single T-shaped steel nail is damaged, a ejection tool is inserted into the nail hole to apply axial force to eject the nail cap from the groove, so that directional replacement is realized without disassembling the drum.

[0019] The gap fit between the inverted T-shaped groove and the nail cap allows the nail body to float slightly, reducing the impact stress during the abrading process.

[0020] The row nail structure can cover a larger surface area of the drum, reduce the number of nails, and improve the uniformity of the abrading process. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 : Schematic diagram of drum structure;

[0022] Figure 2 : Cross-sectional view of the drum, showing the gap fit relationship between the inverted T-shaped groove and the nail cap and the position of the nail removal hole;

[0023] Figure 3 : Enlarged view of the T-shaped nail structure in part A, showing the exposed height of the nail tip (3-5mm) and the arrangement of the row nails;

[0024] Figure 4 : Relationship between the T-shaped nail and the inverted T-shaped groove in part B;

[0025] Figure 5 : Inverted T-shaped groove structure.

[0026] In the figure: 1 drum, 2 T-shaped steel nail, 3 inverted T-shaped groove, 4 nail removal hole, 5 slot card table. DETAILED DESCRIPTION

[0027] Example 1:

[0028] Potato abrading machine drum processing steps:

[0029] The drum 1 is made of stainless steel material, and the inverted T-shaped grooves 3 are uniformly distributed on the circumferential surface of the drum 1 by milling process;

[0030] The T-shaped row nails 2 are embedded in the grooves 3 to ensure the gap fit;

[0031] The exposed height of the T-shaped row of nails 2 is 4 mm, and the tolerance is controlled within ±0.2 mm.

[0032] Maintenance method:

[0033] When the wear of a nail body exceeds the limit (exposed height <2 mm), the punch is inserted into the corresponding nail removal hole 4, and the middle part of the nail is pushed axially to make the nail body separate from the groove;

[0034] After replacing the new row of nails, the installation stability is detected to ensure that there is no radial shaking.

[0035] Example 2: Cassava rasp mill drum

[0036] The exposed height of the nail tip is adjusted to 5 mm to adapt to the higher fiber content of cassava, and the rest of the structure is the same as that of Example 1.

[0037] Beneficial effects

[0038] Simple to make: the inverted T-shaped groove can be completed by conventional machining, without the need for complex clamping strip assembly process;

[0039] Cost reduction: T-shaped steel nail modular production, partial replacement saves material cost;

[0040] Prolonged life: the nail body floating design disperses impact stress, and the overall life of the drum is improved by more than 30%.

[0041] The above examples are only specific embodiments of the present application, and the protection scope of the present application is subject to the claims.

Claims

1. A modular T-staple combination potato peeler drum structure characterized by The invention relates to a drum and a T-shaped steel nail. The T-shaped steel nail is arranged in a row, and the nail head and the nail body are integrally formed.

2. The drum structure of claim 1, wherein: The exposed height of the nail tip is 3-5 mm.

3. The drum structure of claim 1, wherein: The nail body is made of high-carbon alloy steel, and the surface is quenched and treated, with a hardness of greater than or equal to HRC60.

4. The drum structure of claim 1, wherein: ​

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