Method for preventing wear of high-frequency vibrating screen surface support frame for mine classification

Abstract

The application is a method for preventing wear of a support frame of a high-frequency vibrating screen used in a mine, which can reduce or delay wear of the support bars and wear of the screen surface, prolong the service life of the support frame and the screen surface, reduce the maintenance workload and save the production operation cost. In the method, the upper end of each support bar fixed on the support frame extends into a groove of a reversed U-shaped rubber sleeve, the top end of the groove of the rubber sleeve is arc-shaped and matches the upper surface of the upper part of the support frame or the upper surface of other parts fixed on the upper end of the support frame.

Description

Technical Field

[0001] This invention belongs to the field of wet grinding and classification technology in mineral processing, specifically relating to a method for preventing wear on the support frame of a high-frequency vibrating screen used in mine classification. Background Technology

[0002] In the ball mill classification process at the mineral processing plant, hydrocyclones are used to classify the grinding products. The underflow from the hydrocyclones enters the ball mill for regrinding, while the overflow from the hydrocyclones, which is the qualified product from the grinding process, enters a high-frequency vibrating screen for inspection and classification. The overflow from the inspection and classification process is considered waste from the grinding operation (its main components include detonating cords, sawdust, and other hard-to-crush materials from the mining site; although the quantity is not large, it is very destructive to downstream production processes, clogging sand pump impellers, flotation machine impeller covers, and magnetic separator media). The underflow from the inspection and classification process enters the next stage, flotation. The grinding operation has a processing capacity of 56 tons per hour, producing approximately 150 cubic meters of slurry. 3 The volume of slurry at a rate of / h must be inspected and screened using a high-frequency vibrating screen. Therefore, wear on the screen surface and support frame of the high-frequency vibrating screen is a common maintenance workload during production. Two problems frequently arise during production: First, wear and damage occur between the support bars and the rubber sleeves. Second, after wear and damage between the support bars and the rubber sleeves, the screen surface directly contacts the support bars, causing rapid wear and damage. Normally, the entire support frame needs to be replaced once a year, while the screen surface needs to be replaced approximately every 3-6 months due to wear and tear. The replacement cost of the support frame is approximately 50,000 yuan, and replacing three polyurethane screen surfaces costs approximately 24,000 yuan, resulting in an annual maintenance cost of approximately 100,000 yuan. Since the grinding operation is an independent system, maintenance of this system causes a complete shutdown of the entire concentrator, thus affecting the overall labor productivity of the concentrator. Therefore, it is necessary to invent a new method for preventing wear on the support frame of a high-frequency vibrating screen used in mine classification, thereby solving the labor and cost problems associated with replacing the screen surface and support frame. Summary of the Invention

[0003] This invention addresses the shortcomings of existing technologies by providing a method for preventing wear on the support frame of a high-frequency vibrating screen used in mining grading. This method can reduce or delay the wear of the support bars and the wear damage to the vibrating screen surface, thereby increasing the service life of the support frame and the screen surface, reducing maintenance workload, and saving production and operating costs.

[0004] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows: A method for preventing wear on the support frame of a high-frequency vibrating screen used in mining classification is provided. The upper end of each support bar 2 fixed on the support frame 1 extends into the groove of an inverted U-shaped rubber sleeve 5. The top of the groove of the rubber sleeve 5 is arc-shaped and matches the upper surface of the support frame 1 or the upper surface of other parts fixed on the upper end of the support frame 1.

[0005] In the above-mentioned wear-resistant method for graded high-frequency support frames used in mines, the upper surface of the support bar 2 is an arc surface, which contacts the top of the arc-shaped groove of the rubber sleeve 5.

[0006] The above-mentioned wear-resistant method for graded high-frequency support frames used in mines involves welding the upper end of the support bar 2 to the bottom of a round steel bar 3. The diameter of the round steel bar 3 is D1, and the thickness of the support bar 2 is d, where D1 is equal to or slightly greater than d. The upper surface of the round steel bar 3 contacts the top of the arc-shaped groove of the rubber sleeve 5, and the two sides of the support bar 2 contact the inner side of the groove of the rubber sleeve 5.

[0007] In the above-mentioned wear-resistant method for graded high-frequency support frames used in mines, a rubber tube 4 is bonded to the outer surface of each round steel 3, and the upper surface of the rubber tube 4 is in contact with the top of the arc-shaped groove of the rubber sleeve 5.

[0008] The above-mentioned wear-resistant method for graded high-frequency support frames used in mines uses rubber tube 4 with a diameter of D2 and a wall thickness of 1~2mm. D2 = D1 + 2 * rubber tube wall thickness, and one side is cut open.

[0009] A wear-resistant device for the screen support frame of a high-frequency vibrating screen used in mining includes a support frame 1, in which support bars 2 are welded at intervals. Each support bar 2 extends beyond the upper end face of the support frame 1 and is welded to the bottom of a round steel bar 3. A rubber tube 4 is bonded to the outer surface of each round steel bar 3. Each U-shaped rubber sleeve 5 is upside down and fitted onto the rubber tube 4. The upper end of each support bar 2 extends between the two side walls of a rubber sleeve 5.

[0010] The above-mentioned method for preventing wear on the support frame of the high-frequency vibrating screen used for mine grading is 5mm≤d≤8mm.

[0011] The above-mentioned wear-resistant method for the support frame of the high-frequency vibrating screen used in mine grading has the following characteristics: the width and length of the support frame 1 are A and B, respectively, where 1500mm≤B≤3000mm and 500mm≤A≤2000mm. The support bar 2 extends along the width of the support frame 1, and the length of both the support bar 2 and the round steel bar 3 is a. The height of the support bar 2 is h, where 70mm≤h≤150mm. The height of the rubber sleeve 5 is h1, where 20mm≤h1≤50mm, and its length is equal to that of the support bar 2.

[0012] The upper end face of the support bar 2 is welded to the bottom of a round steel bar 3 with a diameter of D1. The surface of the round steel bar 3 with a diameter of D1 is coated with strong adhesive and tightly adhered to a rubber tube 4 with a diameter of D2, thereby ensuring that the support bar 2, the round steel bar 3, and the rubber tube 4 are fixed and move synchronously as a whole. There is no friction or collision between them, so no wear occurs between them.

[0013] The rubber tube 4 is fitted with a rubber sleeve 5. During use, the vibrating screen surface rests on the wear-resistant rubber sleeve. Asynchronous vibrations occur between them, resulting in friction and collisions, leading to wear. Because the contact surfaces are made of soft rubber, wear resistance is increased, extending the lifespan of the round steel bars, rubber hoses, and the vibrating screen surface.

[0014] The beneficial effects of this invention are as follows: This invention reduces damage to the U-shaped rubber sleeve caused by impact during movement by welding round steel onto the support bar, thus changing the original 90-degree right-angle contact surface of the upper part of the support bar to a circular contact surface.

[0015] The present invention further includes a rubber tube fitted onto the round steel welded to the support bar and bonded with strong adhesive, thereby forming an anti-wear device consisting of a three-in-one integrated moving body of the support bar, round steel, and rubber tube.

[0016] This invention replaces the U-shaped rubber sleeve with the anti-wear device, thereby changing the original direct collision and friction between the support bar and the rubber sleeve, which caused wear. During the operation of the high-frequency vibrating screen, relative movement occurs between the screen surface, the U-shaped rubber sleeve, and the anti-wear device, resulting in friction and collision, and causing wear on the screen surface and the U-shaped rubber sleeve. Before the screen surface and the U-shaped rubber sleeve are worn and damaged, the round steel and support bars remain unaffected, thus significantly extending the service life of the support frame itself and the screen surface, reducing maintenance workload, and improving labor productivity. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the connection structure between the support frame and the support strip.

[0018] Figure 2 This is a schematic diagram of the connection structure of the support bar, round steel, rubber tube, and rubber sleeve.

[0019] Figure 3 yes Figure 2 Side view. Detailed Implementation

[0020] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0021] like Figure 1-3 As shown, a wear-resistant device for the screen support frame of a high-frequency vibrating screen used in mining includes a support frame 1, a support bar 2, a round steel bar with a diameter of D1 3, a rubber tube with a diameter of D2 4, and a rubber sleeve 5. The support frame 1 has regularly welded support bars 2. The upper end of the support bar 2 is welded to the bottom of a round steel bar 3 with a diameter of D1. The surface of the round steel bar 3 with a diameter of D1 is coated with strong adhesive and tightly attached to a rubber tube 4 with a diameter of D2. The rubber tube 4 with a diameter of D2 is fitted with a rubber sleeve 5.

[0022] In this embodiment, the support frame 1 and the support strip 2 are both made of 8mm stainless steel plate.

[0023] In this embodiment, the round steel bar 3 with a diameter of D1 is made of an 8mm stainless steel strip.

[0024] In this embodiment, the rubber tube 4 with a diameter of D2 is a rubber hose with an inner diameter of 8mm, an outer diameter of 10mm, a thickness of 1mm, and an opening on one side.

[0025] In this embodiment, the rubber sleeve 5 is an inverted U-shaped rubber sleeve with a groove width of 8mm, a thickness of 5mm, and an overall width D3 of 18mm. The top of the groove is arc-shaped, matching the upper surface of the rubber tube 4.

[0026] This embodiment extends the lifespan of the expensive polyurethane screen surface from 3-6 months to 12-15 months by installing anti-wear devices on the support frame. The lifespan of the support frame is also extended from 12 months to 36 months. Routine maintenance and inspection work is reduced to simply replacing the U-shaped rubber sleeve, significantly decreasing maintenance workload, saving production operating costs, and improving labor productivity.

[0027] The scope of protection of this invention includes, but is not limited to, the above embodiments. The scope of protection of this invention is defined by the claims. Any substitutions, modifications, or improvements to this technology that are easily conceived by those skilled in the art fall within the scope of protection of this invention.

Claims

1. A method for preventing wear on the screen surface support frame of a high-frequency vibrating screen used in mine grading, characterized in that: The upper end of each support bar (2) fixed on the support frame (1) extends into the groove of an inverted U-shaped rubber sleeve (5). The top of the groove of the rubber sleeve (5) is arc-shaped. The groove of the rubber sleeve (5) matches the upper surface of the support frame (1) or the upper surface of other parts fixed on the upper end of the support frame (1). The upper end of the support bar (2) is welded to the bottom of a round steel bar (3). The diameter of the round steel bar (3) is D1, and the thickness of the support bar (2) is d. D1 is equal to or slightly greater than d. The upper surface of the round steel bar (3) is in contact with the top of the arc-shaped groove of the rubber sleeve (5), and the two sides of the support bar (2) are in contact with the inner side of the groove of the rubber sleeve (5). A rubber tube (4) is bonded to the outer surface of each round steel (3), and the upper surface of the rubber tube (4) contacts the top of the arc-shaped groove of the rubber sleeve (5); the support bar (2), the round steel (3), and the rubber tube (4) are fixed and move synchronously as a whole, without friction or collision between them.

2. The wear-resistant method for the screen surface support frame of a high-frequency vibrating screen for mine grading according to claim 1, characterized in that: The diameter of the rubber tube (4) is D2, the wall thickness of the rubber tube is 1~2mm, D2=D1+2*the wall thickness of the rubber tube, and one side is cut open.

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