A wear-resistant break-resistant squeegee

Abstract

The utility model discloses a kind of wear-resistant anti-fracture material scraper, including shaft, material scraper and sealing sleeve;Shaft is used to drive material scraper to carry out material scraping;Sealing sleeve includes inner layer cover and outer layer cover, inner layer cover and outer layer cover are provided with mutually matched annular recess, inner layer cover and outer layer cover can be respectively fixed on shaft and material scraper connection place.This utility model is by setting annular recess in the inner layer cover and outer layer cover of sealing sleeve, when shaft and material scraper fixed connection, the annular recess of inner layer cover and outer layer cover can be mutually embedded, and form curved contact surface, even if sealing sleeve aging, also cannot form the gap of straight-through shaft, to form multilayer protection to shaft.

Description

Technical Field

[0001] This utility model relates to the field of gypsum board production technology, specifically to a wear-resistant and breakage-resistant scraper. Background Technology

[0002] In gypsum board production, the main function of the gypsum board mixer is to mix gypsum powder and water in a certain proportion to form a gypsum paste. The scraper blade's main function is to prevent the material from sticking to the inner wall of the mixer during the mixing process, ensuring that the material is mixed evenly and avoiding material residue.

[0003] Currently, scrapers are typically installed on the end of the machine shaft using flanges and bolts, with two gaskets placed on the two mounting surfaces of the flange to enhance the shaft's sealing. While this method of mounting scrapers with flanges and bolts and gaskets achieves proper installation and fixation, the conventional gaskets are relatively thin, and the two gaskets are directly facing each other. Over time, as the gaskets age, gaps appear between the two gaskets and between the gaskets and the flange. During mixer operation, the scraper and the end of the shaft are directly exposed to the gypsum slurry. Since the gypsum slurry is formed by mixing gypsum powder and water in the mixer, the aging slurry can easily seep in through the gaps between the gaskets, causing shaft wear. Prolonged use leading to severe wear can even result in breakage and machine shutdown, impacting production efficiency.

[0004] Therefore, the existing method of using flange structure with gasket to install scraper blade has the problem that, because the two gaskets are installed directly opposite each other, gaps can easily form between the gaskets and between the gaskets and the flange structure after long-term use and aging. This can cause liquid slurry to seep into and wear the machine shaft, resulting in damage to the machine shaft or even shutdown. Utility Model Content

[0005] The purpose of this utility model is to provide a wear-resistant and fracture-resistant scraper to solve the technical problem in the prior art where two gaskets are directly installed facing each other. After long-term use and aging, gaps easily form between the gaskets and between the gaskets and the flange structure, causing liquid slurry to seep into the worn machine shaft, resulting in damage to the machine shaft or even machine shutdown.

[0006] To solve the above-mentioned technical problems, this utility model specifically provides the following technical solution:

[0007] A wear-resistant and fracture-resistant scraper includes a shaft, on which a scraping device is connected. The scraping device is used to scrape off gypsum mixture from the inner wall of the mixer.

[0008] A sealing sleeve is provided at the connection between the machine shaft and the scraping device. The sealing sleeve includes an inner sleeve and an outer sleeve. The inner sleeve can be interference-fitted onto the machine shaft, and the outer sleeve can be fixed to the mounting part of the scraping device.

[0009] The inner sleeve and the outer sleeve are provided with multiple matching annular grooves. After the machine shaft is connected and fixed to the scraping device, the inner sleeve and the outer sleeve can be nested together through the annular grooves to seal the connection between the machine shaft and the scraping device, thereby forming multiple layers of isolation protection for the machine shaft.

[0010] In a preferred embodiment of this utility model, the scraping device includes a base, a scraper blade, and a connecting flange. The base is fixed to the outside of the flange, the scraper blade is fixed to the outside of the base, and the connecting flange can be connected and fixed to the machine shaft.

[0011] In a preferred embodiment of this utility model, a flange seat is provided on the machine shaft, and the flange seat and the connecting flange can be fixed by bolts. The end of the machine shaft and the connecting flange adopt a tapered surface fit.

[0012] As a preferred embodiment of this utility model, the outer sleeve extends outward to form a fixing seat, and the fixing seat is uniformly provided with holes and grooves. The fixing seat can be placed between the connecting flange and the flange seat when the sealing sleeve is installed, and the bolt can pass through the holes and grooves to fix the fixing seat.

[0013] As a preferred embodiment of this utility model, a sealing groove is provided on the inner side of the connecting flange, the outer sleeve can be partially locked in the sealing groove, and the thickness of the fixing seat is less than the thickness of the outer sleeve body.

[0014] Compared with the prior art, this utility model has the following advantages:

[0015] This invention provides annular grooves in the inner and outer sleeves of the sealing sleeve. When the machine shaft and scraper are fixedly connected, the annular grooves of the inner and outer sleeves can fit together and form a curved contact surface. Even if the sealing sleeve ages, it cannot form a gap that runs straight through the machine shaft, thus forming a multi-layer protection for the machine shaft. Attached Figure Description

[0016] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of a wear-resistant and fracture-resistant scraper is provided for an embodiment of this utility model;

[0018] Figure 2 A schematic diagram of the sealing sleeve structure is provided for an embodiment of this utility model;

[0019] Figure 3 A schematic diagram of the internal structure of the wear-resistant and fracture-resistant scraper is provided for embodiments of this utility model;

[0020] Figure 4 A schematic diagram of the cross-sectional structure of the flange seat and the connecting flange is provided for the embodiments of this utility model.

[0021] The labels in the diagram represent the following:

[0022] 1-Machine shaft; 2-Scraping device; 3-Sealing sleeve;

[0023] 11-Flange seat; 21-Base; 22-Scraper blade; 23-Connecting flange; 31-Inner sleeve; 34-Outer sleeve; 33-Annular groove;

[0024] 231-Sealing groove; 321-Fixing base; 322-Groove. Detailed Implementation

[0025] 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.

[0026] like Figure 1 and 2 As shown, this utility model provides a wear-resistant and fracture-resistant scraper, including a machine shaft 1, on which a scraper 2 is connected and disposed. The scraper 2 is used to scrape off the gypsum mixture on the inner wall of the mixer.

[0027] A sealing sleeve 3 is provided at the connection between the machine shaft 1 and the scraper 2. The sealing sleeve 3 includes an inner sleeve 31 and an outer sleeve 32. The inner sleeve 31 can be interference-fitted onto the machine shaft 1, and the outer sleeve 32 can be fixed to the mounting part of the scraper 2.

[0028] The inner sleeve 31 and the outer sleeve 32 are provided with multiple matching annular grooves 33. After the machine shaft 1 is connected and fixed to the scraper 2, the inner sleeve 31 and the outer sleeve 32 can be nested together through the annular grooves 33 to seal the connection between the machine shaft 1 and the scraper 2, so as to form multiple layers of isolation protection for the machine shaft 1.

[0029] This embodiment provides a sealing sleeve 3 at the connection between the machine shaft 1 and the scraper 2, and divides the sealing sleeve 3 into an inner sleeve 31 and an outer sleeve 32. The inner sleeve 31 and the outer sleeve 32 are provided with multiple matching annular grooves 33. After the machine shaft 1 and the scraper 2 are installed and fixed, the inner sleeve 31 and the outer sleeve 32 can fit into each other through the annular grooves 33. The multiple annular grooves 33 can form a curved mating surface, thereby preventing the sealing sleeve 3 from forming a gap that runs straight through the machine shaft 1 after aging, thus forming a multi-layer isolation protection for the machine shaft 1.

[0030] Compared to the existing method of using two sealing gaskets to seal the flange connection, this embodiment divides the sealing sleeve 3 into an inner sleeve 31 and an outer sleeve 32, and sets matching annular grooves 33 on the inner sleeve 31 and the outer sleeve 32. After the machine shaft 1 and the scraper 2 are connected, the annular grooves 33 of the inner sleeve 31 and the outer sleeve 32 can interlock and form a curved mating surface, thereby forming a multi-layer protection for the machine shaft 1. Even if the sealing sleeve 3 ages, the curved mating surface will not form a gap that runs straight through the machine shaft 1.

[0031] To achieve the connection and fixation of the machine shaft 1 and the scraper 2, the following preferred embodiments are proposed.

[0032] like Figures 1 to 4 As shown, the scraper 2 includes a base 21, a scraper blade 22 and a connecting flange 23. The base 21 is fixed to the outside of the flange 23, the scraper blade 22 is fixed to the outside of the base 21, and the connecting flange 23 can be connected and fixed to the machine shaft 1.

[0033] A flange seat 11 is provided on the machine shaft 1. The flange seat 11 and the connecting flange 23 can be fixed by bolts. The end of the machine shaft 1 and the connecting flange 23 adopt a tapered surface fit.

[0034] Specifically, the connecting flange 23 can be bolted to the flange seat 11 to install the machine shaft 1 and the scraper 2.

[0035] The end of the machine shaft 1 and the connecting flange 23 are fitted with a tapered surface, which makes the connection between the machine shaft 1 and the connecting flange 23 tighter.

[0036] To achieve the fixation of the sealing sleeve 3, the following preferred embodiments are proposed.

[0037] like Figures 2 to 4 As shown, the outer sleeve 32 extends outward from its periphery to form a fixing seat 321. The fixing seat 321 is evenly provided with holes and grooves 322. The fixing seat 321 can be placed between the connecting flange 23 and the flange seat 11 when the sealing sleeve 3 is installed, and the bolts can pass through the holes and grooves 322 to fix the fixing seat 321.

[0038] Specifically, the fixing seat 321 can be placed between the bolt fixing points of the connecting flange 23 and the flange seat 11. During installation, the bolts can pass through the slot 322 to fix the fixing seat 321.

[0039] Since the mounting sleeve 3 is composed of an inner sleeve 31 and an outer sleeve 32, and the inner sleeve 31 and the outer sleeve 32 are also provided with an annular groove 33, the overall thickness of the mounting sleeve 3 is thicker than that of the existing sealing gasket. The thicker the mounting sleeve 3 is, the easier it is to be squeezed and deformed. Therefore, in order to improve the sealing performance of the connecting flange 23 and the flange seat 11, the following preferred embodiment is proposed.

[0040] like Figure 4 As shown, a sealing groove 231 is provided on the inner side of the connecting flange 23, and the outer sleeve 32 can be partially locked in the sealing groove 231. The thickness of the fixing seat 321 is less than the thickness of the outer sleeve 32 body.

[0041] Specifically, the sealing groove 231 can fix the sealing sleeve 3 during installation, and during installation, the mounting groove 231 can appropriately reduce the pressure on the sealing sleeve 3 and reduce the probability of deformation of the sealing sleeve 3.

[0042] In this embodiment, the inner sleeve 31 and the outer sleeve 32 are nested opposite each other, and the outer sleeve 32 is placed in the sealing groove 231. The groove 322 is aligned with the bolt mounting holes of the connecting flange 23. The connecting flange 23 is fitted onto the flange seat 11 and then the connecting flange 23 and the flange seat 11 are fixedly installed by bolts, thereby fixing and sealing the machine shaft 1 and the scraper 2.

[0043] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A wear-resistant and breakage-resistant scraper, characterized in that, Includes a machine shaft (1), on which a scraper device (2) is connected and installed, the scraper device (2) being used to scrape off the gypsum mixture on the inner wall of the mixer; A sealing sleeve (3) is provided at the connection between the machine shaft (1) and the scraper (2). The sealing sleeve (3) includes an inner sleeve (31) and an outer sleeve (32). The inner sleeve (31) can be interference-fitted onto the machine shaft (1), and the outer sleeve (32) can be fixed to the mounting part of the scraper (2). The inner sleeve (31) and the outer sleeve (32) are provided with multiple matching annular grooves (33). After the machine shaft (1) is connected and fixed to the scraper (2), the inner sleeve (31) and the outer sleeve (32) can be nested together through the annular grooves (33) to seal the connection between the machine shaft (1) and the scraper (2) and form multiple layers of isolation protection for the machine shaft (1).

2. The wear-resistant and fracture-resistant scraper according to claim 1, characterized in that, The scraping device (2) includes a base (21), a scraper blade (22) and a connecting flange (23). The base (21) is fixed to the outside of the flange (23), the scraper blade (22) is fixed to the outside of the base (21), and the connecting flange (23) can be connected and fixed to the machine shaft (1).

3. The wear-resistant and fracture-resistant scraper according to claim 2, characterized in that, A flange seat (11) is provided on the machine shaft (1). The flange seat (11) and the connecting flange (23) can be fixed by bolts. The end of the machine shaft (1) and the connecting flange (23) are fitted with a tapered surface.

4. The wear-resistant and fracture-resistant scraper according to claim 3, characterized in that, The outer sleeve (32) extends outward to form a fixing seat (321), and the fixing seat (321) is provided with evenly distributed holes and slots (322). The fixing seat (321) can be placed between the connecting flange (23) and the flange seat (11) when the sealing sleeve (3) is installed, and the bolt can pass through the holes and slots (322) to fix the fixing seat (321).

5. The wear-resistant and fracture-resistant scraper according to claim 4, characterized in that, The inner side of the connecting flange (23) is provided with a sealing groove (231), the outer sleeve (32) can be partially locked in the sealing groove (231), and the thickness of the fixing seat (321) is less than the thickness of the outer sleeve (32) body.

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