A blast wheel blade

Abstract

A kind of shot blasting machine blade, the present application relates to mechanical equipment technical field, it includes blade body;The working surface of one side of the blade body is convex surface structure, the convex surface structure is circular arc structure, and the center of the circle is located on the midline of the transverse section height direction of blade body;The non-working surface of the other side of the blade body is inclined surface structure.The convex surface of blade working surface, it is arched in the middle of blade working surface along length direction, the non-working surface is a slope, so that the distance between non-working surface and working surface gradually increases from the head of blade to tail, so that the distribution of projectile on blade is uniform, blade is balanced, wear-resistant, to improve the service life of blade.

Description

Technical Field

[0001] This invention relates to the field of mechanical equipment technology, specifically to a shot blasting blade. Background Technology

[0002] Shot blasting is a typical mechanical surface treatment process, currently widely used for cleaning and strengthening the surfaces of mechanical products. Similar processes include shot peening and sandblasting. The core component of a shot blasting machine is the blade, which is currently mainly divided into flat straight blades, curved blades, and combined curved and straight blades. Although the blades are not exactly the same, their thickness is uniform.

[0003] As a consumable component, the lifespan of blades is particularly important. Numerous practical experiments and theoretical studies have demonstrated that when a projectile exits the directional sleeve, it is further accelerated by the blades, reaching its maximum speed upon exiting the blades. Therefore, regardless of the blade shape, the first point of failure is often at the blade's tip. Furthermore, during acceleration, the projectile is primarily concentrated in the middle of the blade, and prolonged operation causes the blade to indent from the middle towards the tip, leading to failure. In addition, high-speed blade rotation involves aerodynamic issues; different blade profile parameters and the number of blades will affect noise variations.

[0004] Chinese patent document CN201710295651.1 discloses a shot blasting blade and impeller assembly. The blade structure has a surface texture on the blade body. Its feature is that the surface texture of the working surface of the blade is a rectangular groove. This structure can easily lead to stress concentration, change the velocity direction of the shot, increase the probability of shot-to-shot and shot-to-blade collision, and reduce the service life of the blade. In addition, from an aerodynamic point of view, eddies are easily generated in the groove gap during the high-speed rotation of the blade, which can cause air pressure pulsation and significantly increase noise, which is not conducive to the overall use of the shot blasting machine. Summary of the Invention

[0005] The purpose of this invention is to address the deficiencies and shortcomings of the prior art by providing a shot blasting blade, wherein the working surface of the blade is convex, characterized by an arch in the middle of the working surface along the length direction, and the non-working surface is an inclined surface, so that the distance between the non-working surface and the working surface gradually increases from the head to the tail of the blade, resulting in uniform distribution of the shot on the blade, balanced force on the blade, wear resistance, and thus improving the service life of the blade.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: it includes a blade body; the working surface on one side of the blade body is a convex structure, which is an arc structure, and its center is located on the centerline of the cross-sectional height direction of the blade body; the non-working surface on the other side of the blade body is an inclined structure, with the plane where the working surface is located as the x-axis, the positive direction as the direction of projectile motion, and the plane perpendicular to the working surface as the y-axis, which coincides with the head position of the side of the blade body. The equation of the plane where the non-working surface is located in the top view direction is y = kx, and the coefficient k is in the range of 1 / 42-1 / 63mm.

[0007] Preferably, the length of the blade body is 125-127 mm.

[0008] Preferably, the height of the blade body is 78-80 mm.

[0009] Preferably, the upper edge of the blade body is integrally bent to form an upper brim, and the lower edge of the blade body is integrally bent to form a lower brim.

[0010] Preferably, the upper brim and lower brim extend 5-7 mm in length and 3.5-4.5 mm in thickness.

[0011] Preferably, the upper brim and lower brim are formed in an arc shape with the tail of the blade body.

[0012] Preferably, the radius of the arc-shaped structure is 13.5-14.5 mm.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the present invention provides a shot blasting blade, wherein the working surface of the blade is convex, which is characterized by the middle part of the working surface of the blade arching along the length direction, and the non-working surface is an inclined surface, so that the distance between the non-working surface and the working surface gradually increases from the head to the tail of the blade, so that the shot is evenly distributed on the blade, the blade is subjected to balanced force and wear resistance, thereby improving the service life of the blade. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention.

[0015] Figure 2 This is a side view of the present invention.

[0016] Figure 3 This is a top view of the present invention.

[0017] Explanation of reference numerals in the attached figures:

[0018] 1. Blade body; 2. Side surface; 3. Lower brim; 4. Working surface; 5. Upper brim; 6. Non-working surface. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1-3 As shown, this specific embodiment adopts the following technical solution: It includes a blade body 1; the length L of the blade body 1 is 125-127mm, and the height H is 78-80mm; the working surface 4 on one side of the blade body 1 is a convex structure, which is an arc structure, and its center is located on the centerline of the cross-sectional height direction of the blade body 1. The arc structure passes through the upper and lower endpoints of the working surface 4; the non-working surface on the other side of the blade body 1 is an inclined structure, so that the blade thickness gradually changes to obtain a good service life. Taking the plane where the working surface 4 is located as the x-axis, the positive direction is the direction of projectile movement, and the plane perpendicular to the working surface 4 is the y-axis. The y-axis coincides with the head position of the side surface 2 of the blade body 1. The equation of the plane where the non-working surface 6 is located in the top view direction is y = kx, and the coefficient k is in the range of 1 / 42-1 / 63mm; the blade body 1 The upper edge of the blade body 1 is integrally bent to form an upper brim 5, and the lower edge of the blade body 1 is integrally bent to form a lower brim 3. The extension length of the upper brim 5 and the lower brim 3 is 5-7mm, and the thickness is 3.5-4.5mm. The upper brim 5 and the lower brim 3 are formed with the tail of the blade body 1 in an arc shape. The radius of the arc structure is 13.5-14.5mm, which prevents the projectile from flying out prematurely during acceleration. The arc transition structure helps to reduce the generation of vortices and reduce noise.

[0021] In use, 6-8 blade bodies 1 as described in this invention are installed on the impeller disk. The working convex surface with the arc structure is characterized by the middle part of the working surface 4 arching along the length direction, so that the projectile is evenly distributed on the blade, the blade is subjected to balanced force and wear resistance, thereby improving the service life of the blade. The non-working surface 6 has a sloping structure, so that the distance between the non-working surface 6 and the working surface 4 gradually increases from the head to the tail of the blade body.

[0022] Compared with the prior art, the beneficial effects of this specific embodiment are: This specific embodiment provides a shot blasting blade, wherein the working surface of the blade is convex, which is characterized by the middle of the working surface of the blade arching along the length direction, and the non-working surface is an inclined surface, so that the distance between the non-working surface and the working surface gradually increases from the head to the tail of the blade, so that the shot is evenly distributed on the blade, the blade is subjected to balanced force and wear resistance, thereby improving the service life of the blade.

[0023] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A shot blasting blade, characterized in that: It includes a blade body (1); the working surface (4) on one side of the blade body (1) is a convex structure, which is an arc structure, and its center is located on the centerline of the cross-sectional height direction of the blade body (1); the non-working surface on the other side of the blade body (1) is an inclined structure, with the plane where the working surface (4) is located as the x-axis, the positive direction as the direction of the projectile motion, and the plane perpendicular to the working surface (4) as the y-axis. The y-axis coincides with the head position of the side surface (2) of the blade body (1). The equation of the plane where the non-working surface (6) is located in the top view direction is given by the equation, and the coefficient k ranges from 1 / 42 to 1 / 63m. Within the range of m; the length of the blade body (1) is 125-127mm; the height of the blade body (1) is 78-80mm; the upper edge of the blade body (1) is integrally bent to form an upper brim (5), and the lower edge of the blade body (1) is integrally bent to form a lower brim (3); the extension length of the upper brim (5) and the lower brim (3) is 5-7mm, and the thickness is 3.5-4.5mm; the upper brim (5) and the lower brim (3) are formed by the tail of the blade body (1) in an arc shape; the radius of the arc structure is 13.5-14.5mm.

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