Maintenance auxiliary device for grinding disc of pulping machine
By designing an auxiliary device for the maintenance of grinding discs in a pulp refiner, and utilizing structures such as support columns and brackets to provide stable support, the problem of cumbersome maintenance of grinding discs in large pulp refiners has been solved. This enables efficient disassembly, cleaning, and replacement of grinding discs, and reduces labor intensity.
Patent Information
- Application Number
- CN202520373494.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-05
AI Technical Summary
In the existing technology, the disassembly, cleaning and replacement of grinding discs in large-scale pulping machines are cumbersome, resulting in high labor intensity, low work efficiency and a lack of effective tooling and auxiliary equipment.
An auxiliary device for the maintenance of grinding discs in a pulp mill was designed, including a base, a first fixing device, and a second fixing device. It utilizes structures such as support columns, brackets, and guide rails to provide stable support and movable support, facilitating the disassembly, cleaning, and replacement of the turntable and stationary disc.
It reduces the labor intensity of workers, improves the work efficiency of grinding disc maintenance, and simplifies the process of disassembling, cleaning and replacing grinding discs.
Smart Images
Figure CN223849064U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to technical field of overhauling tooling, especially relates to a grinding plate overhauling auxiliary device of pulp grinder. BACKGROUND
[0002] Mechanical pulp, that is, the paper pulp prepared by mechanically grinding fiber raw materials, the key equipment for producing mechanical pulp is a pulp grinder. The grinding disc of the pulp grinder includes a fixed disc and a rotating disc, and both the fixed disc and the rotating disc are provided with grinding plates. The motor drives the rotating disc to rotate relative to the fixed disc, and the plurality of grinding plates tear and disperse the fiber raw materials entering between the rotating disc and the fixed disc into free fibers suitable for papermaking. Under the existing production conditions, pulp and paper enterprises often choose large-scale pulp grinders for mechanical pulp production to achieve the goal of high efficiency and energy saving. Large-scale pulp grinders with grinding disc diameters of 44 inches, 54 inches, 64 inches, etc. are common.
[0003] Since the pulp grinder tears the fiber raw materials by mechanical action, the grinding disc will be deformed by extrusion during work, causing the grinding plates to wear. The knots, sand, iron filings and other impurities in the fiber raw materials will also cause abnormal damage to the grinding plates after entering the grinding disc. The grinding disc overhaul involves disassembly, hoisting, cleaning, installation and correction. Currently, the industry all hoists the fixed disc and the rotating disc from the chamber of the pulp grinder to the open space to disassemble, clean and replace the grinding plates. However, the grinding disc is large in diameter and heavy in weight, and the replacement is complicated. There is no available tooling to assist in completing the above-mentioned operations, resulting in high labor intensity and low work efficiency. UTILITY MODEL CONTENTS
[0004] In view of the problem that there is no available tooling to assist in completing the grinding plate disassembly, cleaning and replacement operations in the prior art, the utility model provides a pulp grinder grinding plate overhauling auxiliary device.
[0005] The utility model provides the following technical scheme: a pulp grinder grinding plate overhauling auxiliary device, comprising:
[0006] a base;
[0007] a first fixing device comprising a pair of first support columns and a fixed bracket provided on the base, the first support column being provided with a grinding disc fixing member, the fixed bracket being provided between the pair of first support columns, and a limiting plate higher than the fixed bracket being further provided on one side of the fixed bracket;
[0008] Second fixing device, including a pair of second support column set on the base and set between a pair of the second support column movable bracket, the second support column is also provided with millstone fixing piece, the movable bracket includes two parallelly arranged guide rail on the base, the moving platform that linearly moves along the guide rail and first bracket and second bracket set on moving platform, the guide rail one end faces the fixed bracket, and the other end extends to between two second support column, the first bracket and second bracket are also provided with the limiting plate higher than first bracket, second bracket between first bracket and second bracket.
[0009] Preferably, the top surface of the fixed bracket, first bracket and second bracket is curved.
[0010] Preferably, the millstone fixing piece is a threaded rod inserted into the through hole of the first support column and the second support column, and the threaded rod is provided with a fastening nut at both ends.
[0011] Preferably, the moving platform is provided with a roller corresponding to the two guide rails on both sides, and the surface of the roller is provided with an annular groove matched with the guide rail.
[0012] Preferably, the moving platform is slidably connected with the two guide rails.
[0013] Preferably, the pair of first support columns and the pair of second support columns are symmetric about the central axis of the base.
[0014] The utility model discloses the beneficial effect is: to the rotating disc and fixed disc respectively form support, facilitate to the millstone on the rotating disc, fixed disc and carry out the disassembly, cleaning, replacement, be favorable to reduce the labor intensity of worker, improve work efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is the schematic view of one embodiment of maintenance auxiliary device.
[0016] Figure 2 It is the front view of one embodiment of maintenance auxiliary device.
[0017] Figure 3 It is the schematic view of one embodiment of fixed bracket.
[0018] Figure 4 It is the working schematic diagram of first fixing device.
[0019] Reference signs: 10, base; 20, first fixing device; 21, first support column; 211, grinding disc fixing piece; 22, fixed bracket; 23, limiting plate; 30, second fixing device; 31, second support column; 311, grinding disc fixing piece; 32, guide rail; 33, moving platform; 331, roller; 34, first bracket; 35, second bracket; 36, limiting plate; 40, rotating disc; 41, threaded hole. DETAILED DESCRIPTION
[0020] The embodiments of the present application will be described in more detail below with reference to the drawings and reference signs, so that those skilled in the art can implement the present application after reading the specification. It should be understood that the specific examples described herein are only used to explain the present application, and are not intended to limit the present application.
[0021] The present application provides a kind of mill blade overhaul auxiliary device for grinding machine as shown in Figures 1-4 , including base 10, first fixing device 20 and second fixing device 30, first and second fixing device are used to fix rotating disc or fixed disc.
[0022] Base 10 can be channel steel welded into square frame, then cover bottom plate on square frame.
[0023] Please refer to Figures 1-3 , first fixing device 20 includes a pair of first support column 21 and fixed bracket 22 arranged on the base 10, the fixed bracket 22 is arranged between the pair of first support column 21. The first support column 21 is provided with grinding disc fixing piece 211, which can be a threaded rod inserted into the through hole of the first support column 21, and the threaded rod is provided with a locking nut at both ends; in other embodiments, the grinding disc fixing piece 211 can also be a bolt welded on the first support column 21, and a nut threaded with the bolt. Please refer to Figure 4 , rotating disc 40 and fixed disc are provided with a plurality of threaded holes 41 symmetrically about the center of the rotating shaft, the threaded rod of the grinding disc fixing piece 211 can pass through the threaded hole 41, and the rotating disc or the fixed disc can be locked with the first support column 21 by the locking nuts at both ends of the threaded rod; the top surface of the fixed bracket 22 is a curved surface matched with the rotating disc or the fixed disc, for supporting the rotating disc or the fixed disc from the bottom. Further, the fixed bracket 22 is provided with a limiting plate 23 higher than the fixed bracket 22 on one side, to prevent the grinding disc from moving to the side of the limiting plate 23.
[0024] Please refer to Figure 1 , 2The second fixing device 30 comprises a pair of second supporting columns 31 arranged on the base 10 and a movable bracket arranged between the pair of second supporting columns 31. The second supporting column 31 is provided with a grinding disc fixing part 311, and the structure thereof can be referred to the first fixing device 20. The movable bracket comprises two guide rails 32 arranged in parallel on the base 10, and a moving platform 33 linearly moving along the guide rails 32. In the embodiment, the moving platform 33 is provided with a roller 331 corresponding to each of the two guide rails 32 on the two sides thereof, and the surface of the roller 331 is provided with an annular groove matched with the guide rail 32 so that the guide rail 32 is clamped in the annular groove. In other embodiments, the moving platform 33 can also be slidably connected with the two guide rails 32 through a sliding groove. The moving platform 33 is further provided with a first bracket 34 and a second bracket 35, wherein the first bracket 34 faces the fixed bracket 22, and the top surfaces of the first bracket 34 and the second bracket 35 are both curved surfaces matched with the rotating disc or the fixed disc, and both can form bottom support for the grinding disc.
[0025] One end of the guide rail 32 faces the fixed bracket 22, and the first bracket can be close to the fixed bracket 22 along with the moving platform 33, so that the movable bracket and the fixed bracket jointly form support for the grinding disc. The other end of the guide rail 32 extends to between the two second supporting columns 31, so that the second bracket can be moved below the second supporting column 31 and can fix the fixed disc or the rotating disc. A limiting plate 36 higher than the first bracket 34 and the second bracket 35 is further arranged between the first bracket 34 and the second bracket 35.
[0026] The working process of the utility model is as follows: firstly, the moving platform 33 can be close to the fixed bracket 22, then a grinding disc fixed together by the rotating disc and the fixed disc can be hoisted out by using a lifting device such as a crane, the bottom of the rotating disc can be placed on the top surface of the fixed bracket 22, the bottom of the fixed disc can be placed on the top surface of the first bracket 34, then the rotating disc can be fixed on the two first supporting columns 21 by using the grinding disc fixing part 211, and the grinding disc is clamped between the limiting plate 23 and the limiting plate 36; after the rotating disc and the fixed disc are disassembled, the fixed disc is hoisted by using the lifting device, the moving platform 33 is moved below the pair of second supporting columns 31, the fixed disc is placed on the top surface of the second bracket 35, and the fixed disc is fixed with the two second supporting columns 31 by using the grinding disc fixing part 311. At this time, the grinding pieces on the rotating disc and the fixed disc can be disassembled, cleaned and replaced by the workers. After the grinding piece processing is completed, the fixed disc is disassembled from the second supporting column 31 according to the above method, hoisted to the vicinity of the rotating disc, supported by the first bracket 34, then the fixed disc is installed on the rotating disc to form a whole, then the rotating disc is disassembled from the first supporting column 21, and finally the grinding disc is hoisted back to the grinding machine.
[0027] Preferably, the pair of first supporting columns 21 and the pair of second supporting columns 31 are symmetrical about the central axis of the base 10, and the operation is more convenient.
[0028] The above is one or more embodiments of the present application, which is described in more detail and in more detail, but cannot be understood as a limitation on the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.
Claims
1. A refiitlry aid for a refiner plate, characterized in that, The utility model relates to a grinding machine, including: a base; a first fixing device including a pair of first support columns arranged on the base and provided with grinding disc fixing members, and a fixed bracket arranged between the pair of first support columns, and a limiting plate arranged on one side of the fixed bracket and higher than the fixed bracket; a second fixing device including a pair of second support columns arranged on the base and provided with grinding disc fixing members, and a movable bracket arranged between the pair of second support columns, the movable bracket including two guide rails arranged in parallel on the base, a moving platform moving linearly along the guide rails, and a first bracket and a second bracket arranged on the moving platform, one end of the guide rails facing the fixed bracket, and the other end extending to between the two second support columns, and a limiting plate arranged between the first bracket and the second bracket and higher than the first bracket and the second bracket.
2. A refiit assist device for a refiner plate according to claim 1, characterized in that The top surfaces of the fixed bracket, the first bracket and the second bracket are all curved surfaces.
3. A refiit assist device for a refiner plate according to claim 1, characterized in that The grinding disc fixing members are threaded rods inserted into through holes of the first support columns and the second support columns, and the threaded rods are both provided with fastening nuts at both ends.
4. A refiπng mill blade removal aid according to claim 1 wherein, The moving platform is provided with rollers corresponding to the two guide rails on both sides, and the surfaces of the rollers are provided with annular grooves matched with the guide rails.
5. A refiπng mill blade removal aid according to claim 1 wherein, The moving platform is in sliding connection with the two guide rails.
6. A refiπng mill blade removal aid according to claim 1 wherein, The pair of first support columns and the pair of second support columns are symmetric about the central axis of the base.