A repair method for a wear-resistant body of a crusher and the wear-resistant body of the crusher

Abstract

The present invention provides a repair method for a wear-resistant body of a crusher and the wear-resistant body of the crusher. The wear-resistant body to be repaired includes a base body and an old wear-resistant strip installed on the side of the base body. The repair method for the wear-resistant body of the crusher includes the following steps: First, remove the old wear-resistant strip on the side of the base body; then cut at the worn position of the old wear-resistant strip. After cutting the old wear-resistant strip into two sections, splice one end of each section away from the cutting surface to form a new wear-resistant strip; then reinstall the new wear-resistant strip on the side of the base body. The repair method for the wear-resistant body provided by the present invention can reduce the waste of hard alloy materials of the wear-resistant strip, reduce production costs, and extend the service life of the wear-resistant body.

Description

Technical Field

[0001] The present invention belongs to the technical field of rock crushing equipment, and specifically relates to a repair method for a wear-resistant body of a crusher and the wear-resistant body of the crusher. Background Art

[0002] The Barmac crusher, also known as the Barmac sand making machine, is suitable for crushing and shaping soft or medium-hard and extremely hard materials, and is widely used in various ores, cement, refractory materials, bauxite clinker, emery, glass raw materials, manufactured building sand, stone materials, and various metallurgical slag. Especially for high-hard, extra-hard and wear-resistant materials such as silicon carbide, emery, sintered bauxite, and beauty sand, its production output and efficiency are higher than those of other types of crushers. In the engineering field, this crusher is an ideal production equipment for manufactured sand, cushion material, asphalt concrete, and cement concrete aggregate. In the mining field, the crusher is widely used in the front-end process of grinding. It can produce a large amount of fine ore and reduce the high-cost grinding load. Due to its excellent low wear characteristics, the equipment is also used in high-abrasion and secondary disintegration crushing production. In addition, due to zero pollution to the product, it can well adapt to the production of glass quartz sand and other high-purity materials, with a production capacity range of 10 - 500 t / h.

[0003] For the existing Barmac crusher, its Barmac wear-resistant body adopts a one-time casting molding technology. A groove with a single-side length of about 13 cm is provided on the side of the wear-resistant body, and a wear-resistant strip with a length, width, and height of about 13 cm * 1 cm * 1 cm is inlaid. The wear-resistant body is installed on the Barmac crusher, with 3 pieces in each set. During the installation and use period, the material enters the crusher impeller through the upper cloth cone. Through the high-speed rotation centrifugal force of the impeller, the material is thrown out from the inner cavity of the impeller, forms a certain impact angle with the high-speed rotating wear-resistant body, and at the same time makes a reverse impact with the vortex chamber lining plate, thereby crushing the material.

[0004] Currently, the synchronous normal service life of each set of newly purchased wear-resistant bodies is 6 - 7 hours. After the wear-resistant body is worn, 3 pieces need to be replaced simultaneously with new wear-resistant bodies. Each wear-resistant body has a single-side length of about 13 cm. During the use process, the actual worn part of the wear-resistant body accounts for about 1 / 3 of the overall side length, that is, about 2 cm is worn from the center point of the single-side length to the left and right. Due to the continuity of production, the consumption of the wear-resistant body has become the biggest influencing factor and cost consumption in the current production link. Therefore, how to control the consumption of the wear-resistant body to reduce production costs is an urgent problem to be solved.

[0005] In view of this, the present invention is specifically proposed. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art. On the one hand, the present invention provides a repair method for a wear-resistant body of a crusher.

[0007] On the other hand, the present invention provides a wear-resistant body of a crusher repaired by the above-mentioned repair method.

[0008] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0009] A repair method for a wear-resistant body of a crusher, the wear-resistant body to be repaired includes a matrix and an old wear-resistant strip installed on the side of the matrix, and the repair method includes the following steps:

[0010] S1: Remove the old wear-resistant strip on the side of the matrix;

[0011] S2: Cut at the worn position of the old wear-resistant strip, cut the old wear-resistant strip into two sections, and then splice one end of each section away from the cutting surface to form a new wear-resistant strip;

[0012] S3: Reinstall the new wear-resistant strip on the side of the matrix.

[0013] In the above solution, the worn old wear-resistant strip is cut and reversely spliced, and then reused after repair, which can reduce the waste of hard alloy materials of the wear-resistant strip, reduce production costs, extend the service life of the wear-resistant body, has strong practicability, is conducive to popularization and use, and has a broad market prospect.

[0014] In some embodiments, in step S2, the cutting is performed along the width direction of the old wear-resistant strip at the worn position of the old wear-resistant strip.

[0015] In some embodiments, after step S3, the following steps are further included:

[0016] S4: Repair weld the worn part on the surface of the matrix until it is flush with the non-worn surface of the matrix.

[0017] In the above solution, the worn part of the wear-resistant body is repair welded, and then surfacing is performed using a wear-resistant electrode, which can greatly improve the impact resistance of the wear-resistant body, ensure the wear resistance of the wear-resistant body, and thus extend the service life of the wear-resistant body.

[0018] In some embodiments, in step S4, the wear-resistant electrode is used for surfacing repair welding at the worn part on the surface of the matrix.

[0019] In some embodiments, step S4 further includes surfacing the wear-resistant electrode on the surface of the matrix after repair welding to form a wear-resistant layer.

[0020] In some embodiments, a groove is provided on the side of the matrix, the groove extends along the length direction of the matrix and penetrates the matrix, and the new wear-resistant strip is installed in the groove;

[0021] After the step S4, the method further includes a step S5: adding a mixture of an adhesive and corundum sand into the grooves at both ends of the substrate to seal the new wear-resistant strips of the wear-resistant body.

[0022] In some embodiments, after the step S5, the following steps are further included:

[0023] S6: heating the sealed wear-resistant body to 140 - 160 °C, then adding a mixed resin into the gap between the groove and the new wear-resistant strip along the extension direction of the groove, and cooling it.

[0024] In the above solution, the two ends of the groove and the gap are sealed by using the adhesive, corundum sand and the mixed resin, so that the wear-resistant strips are more firmly embedded in the substrate and are closely connected to the substrate, which can further improve the wear resistance of the wear-resistant body.

[0025] In some embodiments, in the step S5, the weight ratio of the adhesive to the corundum sand is 1:(3 - 10);

[0026] Preferably, the adhesive is white emulsion.

[0027] In some embodiments, the mixed resin includes epoxy resin and polyamide resin;

[0028] Preferably, the weight ratio of the epoxy resin to the polyamide resin is 1:1.

[0029] A crusher wear-resistant body is obtained by repairing with any one of the above-mentioned repair methods;

[0030] The wear-resistant strips of the wear-resistant body are made of cemented carbide materials; preferably, the wear-resistant strips are made of Black King Kong materials.

[0031] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0032] The repair method of the crusher wear-resistant body provided by the present invention cuts the worn old wear-resistant strips and splices them reversely, and then reuses them after repair, which can reduce the waste of cemented carbide materials of the wear-resistant strips, reduce the production cost, extend the service life of the wear-resistant body, has extremely strong practicability, is beneficial to popularization and use, and has a broad market prospect.

[0033] The repair method of the crusher wear-resistant body provided by the present invention performs repair welding at the worn part of the wear-resistant body, and then uses wear-resistant electrodes for surfacing, which can greatly improve the impact resistance of the wear-resistant body, ensure the wear resistance of the wear-resistant body, and thus extend the service life of the wear-resistant body.

[0034] The repair method of the wear-resistant body of the crusher provided by the present invention uses an adhesive, corundum sand and a mixed resin to seal both ends of the groove and the gap, so that the wear-resistant strip is more firmly embedded in the matrix, is closely connected to the matrix, and can further improve the wear-resistant effect of the wear-resistant body.

[0035] The following further describes in detail the specific implementation manners of the present invention with reference to the accompanying drawings. Description of the Drawings

[0036] The accompanying drawings, as part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation to the present invention. Obviously, the accompanying drawings in the following description are only some embodiments, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts. In the drawings:

[0037] Figure 1 It is a flowchart of a repair method for the wear-resistant body of the crusher of the present invention.

[0038] Figure 2 It is a flowchart of another repair method for the wear-resistant body of the crusher of the present invention.

[0039] Figure 3 It is a flowchart of yet another repair method for the wear-resistant body of the crusher of the present invention.

[0040] Figure 4 It is a schematic diagram of the matrix structure of the wear-resistant body of the crusher of the present invention.

[0041] Figure 5 It is a schematic diagram of the structure of the wear-resistant body of the crusher to be repaired after wear of the present invention.

[0042] Figure 6 It is a schematic diagram of the structure of the wear-resistant body of the crusher after repair of the present invention.

[0043] In the figures: 1, wear-resistant body to be repaired; 10, matrix; 20, new wear-resistant strip; 30, groove; 40, old wear-resistant strip.

[0044] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Specific Embodiments

[0045] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments with reference to the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0046] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0047] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0049] As Figure 1 shown, the present invention provides a method for repairing a wear-resistant body of a crusher. The wear-resistant body to be repaired includes a base body and an old wear-resistant strip installed on the side of the base body. The repair method includes the following steps:

[0050] S1: Remove the old wear-resistant strip on the side of the base body;

[0051] S2: Cut at the worn position of the old wear-resistant strip. After cutting the old wear-resistant strip into two sections, splice one end of each section away from the cutting surface to form a new wear-resistant strip;

[0052] S3: Reinstall the new wear-resistant strip to the side of the base body.

[0053] Existing crushers usually consist of accessories such as an impeller, a runner plate, and a wear-resistant body. The impeller is installed on the main shaft of the crusher, and a runner plate and a feeding cone are installed. Materials enter the crusher impeller through the upper feeding cone. Through the high-speed rotation centrifugal force of the impeller, the materials are thrown out of the impeller cavity through the runner plate. The thrown materials form a certain impact angle with the high-speed rotating wear-resistant body and at the same time collide with the vortex chamber liner in the reverse direction, thereby crushing the materials.

[0054] Specifically, as Figure 4 andFigure 5 As shown in the figure, a wear-resistant body usually has a groove 30 formed on one side of a base body 10. Usually, the wear-resistant strip has a cuboid structure and is made of cemented carbide material. The wear-resistant strip is installed in the groove. During the use of the wear-resistant body, wear occurs at local positions, that is, the base body and the wear-resistant strip will have local concave, that is, concave at the center, and only slight wear occurs in other parts, resulting in very uneven wear degree of the wear-resistant strip. If not replaced in time, it will lead to a decline in production capacity; in addition, since the material always rubs against the center position of the single side of the wear-resistant body, if the worn wear-resistant body is persisted in use, it is easy to damage the impeller and cause greater equipment failures. Therefore, the worn wear-resistant body must be replaced in time. However, due to the high price of the wear-resistant body, frequent replacement of the wear-resistant body will increase the production cost.

[0055] In the above solution, by cutting the old wear-resistant strip 40 in the worn position of the wear-resistant body to be repaired and then splicing it in the reverse direction, and reinstalling it in the groove 30 of the base body 10 after repairing it into a new wear-resistant strip 20, the waste of cemented carbide material of the wear-resistant strip can be reduced, the production cost can be lowered, the service life of the wear-resistant body can be extended, it has extremely strong practicability, is beneficial to popularization and use, and has a broad market prospect.

[0056] By adopting the above repair method, the service life of the wear-resistant body can be extended from 6 - 7 hours to 12 - 14 hours, and 50% of the consumable cost of the wear-resistant strip can be saved.

[0057] Preferably, before performing the step S1, it further includes heating the wear-resistant body to be repaired, and the heating temperature is 60 - 100 °C.

[0058] Since a new wear-resistant body will bond the wear-resistant strip to the base body using an adhesive such as white latex, after heating the wear-resistant body to be repaired, the adhesive such as white latex can be melted, which is convenient for removing the old wear-resistant strip.

[0059] In some embodiments, the wear-resistant strip is made of cemented carbide material, and the cemented carbide material includes at least one of cobalt, silicon, nickel, antimony, chromium steel, and black diamond.

[0060] In some embodiments, in the step S2, the worn position of the old wear-resistant strip is cut along the width direction of the old wear-resistant strip.

[0061] It can be understood that it can also be cut obliquely at the worn position of the old wear-resistant strip, that is, there is a certain included angle between the cutting direction and the width direction of the old wear-resistant strip. Preferably, the worn position of the old wear-resistant strip is cut along the width direction of the old wear-resistant strip.

[0062] In some embodiments, as Figure 2 shown, the repair method includes the following steps:

[0063] S1: Remove the old wear-resistant strip on the side of the substrate.

[0064] S2: Cut at the worn position of the old wear-resistant strip. After cutting the old wear-resistant strip into two sections, then splice one end of each section away from the cutting surface to form a new wear-resistant strip.

[0065] S3: Reinstall the new wear-resistant strip on the side of the substrate.

[0066] S4: Repair weld the worn part on the surface of the substrate until it is flush with the unworn surface of the substrate.

[0067] In the above solution, repair welding is carried out on the worn part of the wear-resistant body, and then surfacing is carried out using a wear-resistant electrode, which can greatly improve the impact resistance of the wear-resistant body, ensure the wear resistance of the wear-resistant body, and thus extend the service life of the wear-resistant body.

[0068] In some embodiments, in step S4, the wear-resistant electrode is used for surfacing to repair weld the worn part on the surface of the substrate.

[0069] Since the wear-resistant electrode has good wear resistance, toughness and crack resistance, in the repair welding process, the worn part on the surface of the substrate is built up layer by layer using the wear-resistant electrode, so that the wear-resistant body can have high impact resistance and wear resistance.

[0070] In some embodiments, step S4 further includes surfacing the wear-resistant electrode on the surface of the substrate after repair welding to form a wear-resistant layer.

[0071] In the above technical solution, first, the worn part on the surface of the substrate is repair welded using an ordinary electrode until it is flush with the unworn surface of the substrate, that is, close to the original working surface of the substrate; then the surface of the substrate after repair welding is built up using a wear-resistant electrode to form a wear-resistant layer, which not only enhances the impact resistance and wear resistance of the wear-resistant body, but also reduces the repair cost.

[0072] Preferably, the wear-resistant electrode is a high manganese steel electrode, and the ordinary electrode can be a high titanium type carbon steel electrode.

[0073] In some embodiments, a groove is provided on the side of the substrate, the groove extends along the length direction of the substrate and penetrates the substrate, and the new wear-resistant strip is installed in the groove;

[0074] As Figure 3 shown, the repair method includes the following steps:

[0075] S1: Remove the old wear-resistant strip on the side of the substrate.

[0076] S2: Cut at the worn position of the old wear-resistant strip. After cutting the old wear-resistant strip into two sections, splice one end of each section away from the cutting surface to form a new wear-resistant strip;

[0077] S3: Reinstall the new wear-resistant strip on the side of the base body.

[0078] S4: Repair the worn part on the surface of the base body by welding until it is flush with the unworn surface of the base body.

[0079] S5: Add a mixture of adhesive and corundum sand into the grooves at both ends of the base body to seal the new wear-resistant strip of the wear-resistant body.

[0080] Generally, grooves are formed on the side of the new wear-resistant body base. The wear-resistant strip is matched with the groove structure and embedded therein for fixation. The two can be fixedly connected by brazing or gluing.

[0081] In some embodiments, such as Figure 3 shown, after the step S5, the following steps are further included:

[0082] S6: Heat the sealed wear-resistant body to 140 - 160 °C, then add the mixed resin along the extending direction of the groove into the gap between the groove and the new wear-resistant strip, and cool it.

[0083] Preferably, the heating temperature of the sealed wear-resistant body is 150 °C.

[0084] Specifically, place the sealed wear-resistant body in a heating box for heating to make the adhesive have strong fluidity. At this time, quickly pour the mixed resin evenly into the gap between the new wear-resistant strip and the groove with tools such as a spoon, so that it is evenly mixed with substances such as the adhesive, and then cool it for about three hours to complete the repair.

[0085] In the above solution, the grooves at both ends and the gaps are sealed with adhesive, corundum sand and mixed resin, so that the wear-resistant strip is more firmly embedded in the base body and is closely connected to the base body, which can further improve the wear resistance of the wear-resistant body.

[0086] In some embodiments, in the step S5, the weight ratio of the adhesive to the corundum sand is 1:(3 - 10);

[0087] Preferably, the adhesive is white latex.

[0088] In some embodiments, the mixed resin includes epoxy resin and polyamide resin;

[0089] Preferably, the weight ratio of the epoxy resin to the polyamide resin is 1:1.

[0090] As Figure 6 shown, the present invention provides a wear-resistant body for a crusher, which is obtained by repairing with any one of the above-mentioned repair methods;

[0091] The wear-resistant strips of the wear-resistant body are made of cemented carbide material; preferably, the wear-resistant strips are made of Black Diamond material.

[0092] As Figure 5 shown, after the center position of the base body 10 of the wear-resistant body 1 to be repaired is worn, it will be recessed inward to form an arc-shaped notch, and the old wear-resistant strip 40 will also be recessed inward at the center. By cutting the center recess of the old wear-resistant strip 40, after cutting the old wear-resistant strip into two sections, then splicing the ends of each section away from the cutting surface to form a new wear-resistant strip 20, when the new wear-resistant strip 20 is reinstalled in the groove 30 on the side of the base body 10, the structure of the repaired wear-resistant body as shown in Figure 6 can be obtained.

[0093] For the wear-resistant body repaired by the present invention, the outermost side of the base body groove is the worn part of the old wear-resistant strip, and the middle position of the base body groove is the unworn part of the old wear-resistant strip.

[0094] It can be understood that mounting holes can be provided on the other side of the wear-resistant body to mount the wear-resistant body on the rotor of the crusher. The structure of the wear-resistant body for the crusher can be in any shape such as block, sheet, etc., to be applicable to different types of crushers, for example: crushing equipment such as Barmac crusher, coal breaker, etc.

[0095] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present invention, can make some changes or modifications to the above-mentioned technical content as equivalent embodiments of equivalent changes, but as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the present invention.

Claims

1. A repair method for a wear-resistant body of a crusher, the wear-resistant body to be repaired includes a base body and an old wear-resistant strip installed on the side of the base body, and is characterized in that, The repair method includes the following steps: S1: Remove the old wear-resistant strip on the side of the substrate; S2: Cut at the worn position of the old wear-resistant strip. After cutting the old wear-resistant strip into two sections, splice one end of each section away from the cutting surface to form a new wear-resistant strip; S3: Reinstall the new wear-resistant strip on the side of the substrate.

2. The repair method of a crusher wear-resistant body according to claim 1, wherein in step S2, cutting is performed along the width direction of the old wear-resistant strip at the worn position of the old wear-resistant strip.

3. A repair method for a wear-resistant body of a crusher according to claim 1 or 2, characterized in that, After step S3, the following steps are further included: S4: Repair weld the worn part on the surface of the substrate until it is flush with the unworn surface of the substrate.

4. The repair method of a crusher wear-resistant body according to claim 3, wherein in step S4, a wear-resistant welding rod is built-up welded at the worn part on the surface of the substrate for repair welding.

5. The repair method of a crusher wear-resistant body according to claim 3, wherein step S4 further includes building-up welding a wear-resistant welding rod on the surface of the substrate after repair welding to form a wear-resistant layer.

6. The repair method of a crusher wear-resistant body according to claim 4 or 5, wherein a groove is provided on the side of the substrate, the groove extends along the length direction of the substrate and penetrates the substrate, and the new wear-resistant strip is installed in the groove; After step S4, step S5 is further included: adding a mixture of an adhesive and corundum sand into the grooves at both ends of the substrate to block the new wear-resistant strip of the wear-resistant body.

7. The repair method of a wear-resistant body of a crusher according to claim 6, characterized in that, After step S5, the following steps are further included: S6: Heat the blocked wear-resistant body to 140°C - 160°C, then add a mixed resin into the gap between the groove and the new wear-resistant strip along the extension direction of the groove, and cool it.

8. The repair method of a crusher wear-resistant body according to claim 6, wherein in step S5, the weight ratio of the adhesive to the corundum sand is 1:(3 - 10).

9. The repair method of a crusher wear-resistant body according to claim 8, wherein the adhesive uses white latex.

10. The repair method of a crusher wear-resistant body according to claim 7, wherein the mixed resin includes epoxy resin and polyamide resin.

11. The repair method of a crusher wear-resistant body according to claim 10, wherein the weight ratio of the epoxy resin to the polyamide resin is 1:

1.

12. A crusher wear-resistant body repaired by using the repair method according to any one of claims 1 - 11, wherein the wear-resistant strip of the wear-resistant body is made of a hard alloy material.

13. The wear-resistant body of the crusher according to claim 12, characterized in that, The wear-resistant strip is made of Black Diamond material.

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