Hard alloy protection device easy to replace

Abstract

The hard alloy protection device easy to replace is installed at a slag discharging opening of a centrifugal machine and comprises an alloy gland and an alloy tile, the alloy gland and the alloy tile form a coordination structure, and during installation, the alloy tile is arranged at the easily-abraded portion of the slag discharging opening. And then the alloy gland is fixedly installed on the side wall of the slag discharging opening, and meanwhile the alloy gland is suitable for clamping and fixing the alloy tiles through the coordination structure. The alloy tile is only arranged at the easy-to-wear part, and the other parts are separately arranged into the alloy gland, so that the size of the actual wear part is reduced compared with that of the traditional alloy tile, the alloy gland can be used for clamping, limiting and fixing the alloy tile when being fixed, the alloy tile is easy to disassemble and assemble, the waste is less when the alloy tile is scrapped, and the cost is saved.

Description

Technical Field

[0001] The present application relates to the technical field of centrifuge accessories, and in particular to an easily replaceable hard alloy protective device. Background Art

[0002] The carbide tile is located at the slag outlet of the centrifuge, and its main function is to protect the cone of the centrifuge from being worn during operation.

[0003] When replacing the existing alloy bearings, the drum and spiral components must first be disassembled to the lifting platform, and then the small end cover plate is removed to replace the worn carbide bearings. However, carbide bearings are disposable and vulnerable parts, and replacement is time-consuming, labor-intensive, and costly. Summary of the invention

[0004] The purpose of the present application is to provide a cemented carbide protection device which is easy to replace.

[0005] In order to achieve the above objectives, the technical solution adopted in the present application is: an easily replaceable carbide protection device, installed at the slag discharge port of the centrifuge, including an alloy pressure cover and an alloy tile. The alloy pressure cover and the alloy tile form a coordination structure. During installation, the alloy tile is placed at the easily worn part of the slag discharge port, and then the alloy pressure cover is fixedly installed on the side wall of the slag discharge port. At the same time, the alloy pressure cover is suitable for fixing the alloy tile in place through the coordination structure.

[0006] Preferably, the alloy tile extends on the inner side or the middle part near the edge of the slag discharge port to form a mating portion with a thickness less than the thickness of the edge, and the alloy pressure cover is provided with a recess relative to the mating portion, and during installation, the mating portion and the recess cooperate to form the coordination structure.

[0007] As a preference, the alloy pressure cover is a top-bottom symmetrical structure, and the matching parts are correspondingly arranged on both the upper and lower sides of the alloy pressure cover, and the alloy pressure cover is formed with a first wear surface and a second wear surface.

[0008] The mating length of the recess is greater than the mating length of the mating portion to form an installation gap, and the length range of the installation gap is 0.75±0.25 mm.

[0009] Preferably, the slag discharge port is provided with a wear-resistant ring on the bottom surface of one side where the alloy tile is installed, and the wear-resistant ring forms a groove that matches the matching part. During installation, the matching part on one side of the alloy tile is first placed on the groove, and then the alloy pressure cover is installed and pushes the alloy tile to form abutment with the wear-resistant ring.

[0010] As a preference, the cross-sections of the matching portion and the recessed portion are both rectangular.

[0011] As a preference, the cross-sections of the matching portion and the recessed portion are both trapezoidal, and one side of the inclined surfaces of the two correspond to each other when matched.

[0012] As a preferred embodiment, the alloy tile is made of stainless steel stacked with tungsten carbide.

[0013] As a preference, the alloy pressure cover comprises a fixing portion, and during installation, the alloy pressure cover is fixed to the side wall of the slag discharge port by screwing a hexagonal screw into the fixing portion.

[0014] As a preferred embodiment, the cross-sections of the alloy tile and the alloy gland are both arc-shaped, the curvatures of the two are equal, and the curvature range is 60° to 120°.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] The alloy tiles of the present application are only provided at the parts prone to wear, and the rest are separately provided as alloy pressure covers. Therefore, the volume of the actual wear parts is smaller than that of traditional alloy tiles. The alloy pressure covers will fix the alloy tiles in position when they are fixed, making them easy to disassemble and assemble, with less waste when scrapped, thus helping to save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the utility model.

[0018] Figure 2 It is a partial structural sectional view of a preferred embodiment of the utility model during installation.

[0019] Figure 3 yes Figure 1 Enlarged view of point A in the middle.

[0020] Figure 4 The present invention is a diagram showing two usage states of an alloy tile in one embodiment of the present invention.

[0021] Figure 5 It is a diagram showing the matching states of two embodiments of the alloy gland and the alloy tile in the utility model.

[0022] In the figure: 1. alloy pressure cover; 2. fixing position; 3. alloy tile; 31. first wear surface; 32. second wear surface; 4. small end cover plate; 5. cone drum; 6. hexagonal screw; 7. wear-resistant ring; 8. installation gap; 9. matching part; 10. clamping part. DETAILED DESCRIPTION

[0023] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0024] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0025] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0026] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0027] Example:

[0028] Reference Figure 1-5The present embodiment provides an easily replaceable cemented carbide protective device, which is installed at the slag discharge port of the conical drum 5 in the centrifuge. A small end cover plate 4 is fixed to the outside of the conical drum 5 by screws, and the slag discharge port is arranged at the connection position between the conical drum 5 and the small end cover plate 4. The cemented carbide protective device of the present embodiment comprises an alloy gland 1 and an alloy tile 3, and the alloy gland 1 and the alloy tile 3 form a coordination structure. When installing, the alloy tile 3 is placed at the easily worn part of the slag discharge port, and then the alloy gland 1 is fixedly installed on the side wall of the slag discharge port, and the alloy gland 1 is suitable for fixing the alloy tile 3 by the coordination structure. The alloy tile 3 is positioned and limited by the alloy pressure cap 1, so that it is fixed in the easily worn part of the slag discharge port. Compared with the traditional one-piece alloy tile 3, the alloy tile 3 in this embodiment is only set in the easily worn part, so its volume is smaller than that of the traditional alloy tile 3, and less waste is caused when it is scrapped, which is conducive to cost saving; and the alloy tile 3 installed by the alloy pressure cap 1 is easy to install and disassemble, and the new alloy tile 3 can be replaced quickly after the alloy tile 3 is worn. In this embodiment, the existing alloy tile is designed as a combination of the alloy pressure cap 1 and the alloy tile 3. When installing, the alloy pressure cap 1 can be directly fixed on the side wall of the slag discharge port at the slag discharge port, and the alloy tile 3 is also installed by limiting the position; when replacing, it is only necessary to remove the alloy pressure cap 1 to replace the new alloy tile 3.

[0029] The alloy tile 3 is provided with a matching portion 9 extending from the inner side or the middle part of the edge near the slag discharge port, the matching portion 9 having a thickness smaller than the thickness of the edge. Figure 3 As shown, the mating portion 9 is located at the innermost side of the edge of the alloy tile 3 close to the slag discharge port (obviously Figure 3 The blank area on the left side of the alloy tile 3 is the actual location of the slag discharge port side wall), and the matching portion 9 may not be arranged in the Figure 3 The leftmost side of Figure 3 The middle side of the top of the middle alloy tile 3 can also achieve a locking effect. The alloy gland 1 is provided with a recess relative to the matching portion 9, corresponding to Figure 3 or Figure 5 The right side of the alloy gland 1 forms a clamping portion 10, which is limited inwardly on the outside of the matching portion 9. When installed, the matching portion 9 and the recessed portion cooperate to form a coordination structure. However, it is obvious that the matching portion 9 cannot be set on Figure 3 On the rightmost side (i.e. the outermost side) of the alloy tile 3, otherwise the alloy gland 1 cannot fix the alloy tile 3 in a position-limiting manner.

[0030] like Figure 4 As shown, the alloy tile 3 is a symmetrical structure, and the matching portion 9 is correspondingly arranged on both the upper and lower sides of the alloy tile 3, and the alloy tile 3 is formed with a first wear surface 31 and a second wear surface 32. Figure 1The left side of the alloy gland 1 and the alloy tile 3 after being matched as a whole is attached to the side wall of the slag discharge port, and the generally easy-to-wear surface is located on the side of the inner side of the slag discharge port that contacts the material. Due to the symmetrical structure of the alloy tile 3, after the side of the inner side of the slag discharge port that contacts the material is worn, Figure 4 The alloy tile 3 can be swapped in the up and down directions, for example, with the first wear surface 31 facing inwards. After wear, the alloy pressure cover 1 can be removed first, and then the direction of the alloy tile 3 can be swapped so that the second wear surface 32 faces inwards to ensure that the centrifuge is not worn within a certain operating cycle; when both sides of the alloy tile 3 are worn, the alloy pressure cover 1 can be removed and the alloy tile 3 can be replaced.

[0031] Reference Figure 3 , the mating length of the concave portion is greater than the mating length of the mating portion 9 to form an installation gap 8, and the length range of the installation gap 8 is 0.75±0.25 mm. Since the alloy tile 3 in this embodiment is not provided with a fixing method such as screws, it is fixed by the limit of the alloy gland 1, so reserving some installation gaps 8 can be more flexible during installation, and after installation, the alloy tile 3 only has such a large activity space as the installation gap 8, which does not have much impact on the function of preventing the alloy tile 3 from wear; but after such a design, the production error range of the alloy tile 3 is larger, and the production process requirements are relatively reduced, which is conducive to reducing costs.

[0032] like Figure 2 As shown, a wear-resistant ring 7 is provided on the bottom surface of one side of the slag discharge port where the alloy tile 3 is installed. The wear-resistant ring 7 forms a groove that matches the matching portion 9. During installation, the matching portion 9 on one side of the alloy tile 3 is first placed on the groove, and then the alloy pressure cap 1 is installed and pushes the alloy tile 3 to abut against the wear-resistant ring 7. The wear-resistant ring 7 can effectively prevent wear by cooperating with the alloy tile 3. In fact, the wear-resistant ring 7 can also be installed in a detachable manner such as screws. The material of the wear-resistant ring 7 is generally rubber, etc., which has good wear resistance and certain elasticity. The above-mentioned alloy tile 3 leaves a certain gap when it is connected with the alloy pressure cap 1 in a coordinated structure. Here, through the elasticity of the wear-resistant ring 7, the alloy tile 3 can first squeeze the wear-resistant ring 7 to produce a slight elastic deformation during installation, and then the alloy pressure cap 1 is installed to press the alloy tile 3 against the wear-resistant ring 7. At this time, the installation gap 8 is reduced or disappeared, and the alloy tile 3 is stably installed.

[0033] In this embodiment, the cross-section of the matching portion 9 and the recessed portion can be set to be rectangular. Figure 5 As shown in (1) in .

[0034] Of course, refer to Figure 5 In (2), the cross-sections of the mating portion 9 and the concave portion are both trapezoidal, and the inclined surfaces of the two correspond to each other when mating. The corresponding inclined surfaces can ensure a larger contact area between the alloy gland 1 and the alloy tile 3, so that the mating effect of the two is more stable.

[0035] The preferred material of the alloy tile 3 is stainless steel stacked with tungsten carbide hard alloy, and a structure in which the outer layer of stainless steel is welded with tungsten carbide can be adopted to improve the wear resistance.

[0036] like Figure 2 , Figure 5 As shown, the alloy gland 1 includes a fixing portion 2, and a screw hole is also provided on the side wall of the slag discharge port. During installation, the alloy gland 1 is fixed to the side wall of the slag discharge port by screwing a hexagonal screw 6 into the fixing portion 2. The alloy gland 1 is fixed by the hexagonal screw 6, which is easy to install and disassemble.

[0037] In this embodiment, the cross-sections of the alloy tile 3 and the alloy pressure cover 1 are preferably arc-shaped, the curvature of the two are equal, and the curvature range is 60° to 120°. The alloy tile 3 with a certain curvature fits better with the side wall of the slag discharge port and has a larger fitting area, which is of significance for improving the stability of the equipment.

[0038] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. An easily replaceable carbide protective device installed at the slag discharge port of a centrifuge, characterized in that: It includes an alloy pressure cover and an alloy tile, which form a coordination structure. During installation, the alloy tile is placed at a wear-prone position of the slag discharge port, and then the alloy pressure cover is fixedly installed on the side wall of the slag discharge port. At the same time, the alloy pressure cover is suitable for fixing the alloy tile in place through the coordination structure.

2. The easily replaceable cemented carbide protection device according to claim 1, characterized in that: The alloy tile extends on the inner side or middle part near the edge of the slag discharge port to form a matching portion with a thickness less than the thickness of the edge. The alloy pressure cover is provided with a recess relative to the matching portion. During installation, the matching portion and the recess cooperate to form the coordination structure.

3. The easily replaceable hard alloy protection device according to claim 2, characterized in that: The alloy pressure cover is a symmetrical structure in the upper and lower parts. Correspondingly, the matching parts are arranged on the upper and lower sides of the alloy pressure cover. The alloy pressure cover is formed with a first wear surface and a second wear surface.

4. The easily replaceable hard alloy protection device according to claim 2, characterized in that: The mating length of the recess is greater than the mating length of the mating portion to form an installation gap, and the length range of the installation gap is 0.75±0.25 mm.

5. The easily replaceable cemented carbide protection device according to claim 3, characterized in that: The slag discharge port is provided with a wear-resistant ring on the bottom surface of one side where the alloy tile is installed, and the wear-resistant ring forms a groove that matches the matching part. During installation, the matching part on one side of the alloy tile is first placed on the groove, and then the alloy pressure cover is installed and pushes the alloy tile to form abutment with the wear-resistant ring.

6. The easily replaceable cemented carbide protection device according to any one of claims 2 to 5, characterized in that: The cross sections of the matching portion and the recessed portion are both rectangular.

7. The easily replaceable cemented carbide protection device according to any one of claims 2 to 5, characterized in that: The cross sections of the matching portion and the recessed portion are both trapezoidal, and one side of the inclined surfaces of the two portions correspond to each other when matched.

8. The easily replaceable cemented carbide protection device according to claim 1, characterized in that: The alloy tile is made of stainless steel and tungsten carbide hard alloy.

9. The easily replaceable cemented carbide protection device according to claim 1, characterized in that: The alloy pressure cover comprises a fixing portion, and during installation, the alloy pressure cover is fixed to the side wall of the slag discharge port by screwing a hexagonal screw into the fixing portion.

10. The easily replaceable cemented carbide protection device according to claim 1, characterized in that: The cross-sections of the alloy tile and the alloy gland are both arc-shaped, the curvatures of the two are equal, and the curvature range is 60° to 120°.

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