Front protective plate of overflowing piece of slurry pump

Abstract

The utility model relates to the technical field of slurry pump overflowing piece front protective plates, and provides a slurry pump overflowing piece front protective plate which comprises a center plate, a plurality of arc-shaped peripheral plates are arranged on the edge of the center plate and circumferentially arranged around the center plate, and an annular edge plate is arranged on the side, away from the center plate, of each arc-shaped peripheral plate. First connecting structures are arranged between the arc-shaped peripheral plates and the center plate, the arc-shaped peripheral plates and the center plate are detachably connected through the first connecting structures, second connecting structures are arranged between the adjacent arc-shaped peripheral plates, and the adjacent arc-shaped peripheral plates are detachably connected through the second connecting structures. A third connecting structure is arranged between the arc-shaped peripheral plate and the annular edge plate, and the arc-shaped peripheral plate and the annular edge plate are detachably connected through the third connecting structure. By means of the technical scheme, the problems that in the prior art, due to the fact that an integrated design is adopted for the front protection plate, even if only part of the area is seriously abraded, the whole front protection plate needs to be replaced, and the use cost is increased are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of front guard plates for flow components of slurry pumps, and in particular to a front guard plate for flow components of slurry pumps. Background Art

[0002] Slurry pumps are widely used in industries such as mining, metallurgy, coal, electric power, and building materials to transport slurries containing solid particles. As a core component of slurry pumps, the flow element directly contacts the medium during the pumping process, fulfilling the dual tasks of conveying the medium and withstanding wear. The front guard is a crucial component of the flow element, located in front of the impeller. It primarily protects the impeller and pump casing from direct impact and wear from the medium, while also improving fluid entry and reducing eddy currents and energy loss.

[0003] Existing slurry pumps typically utilize a one-piece front guard. While this design is relatively simple to manufacture and install, it presents significant drawbacks in practical use. Different areas of the front guard experience varying degrees of wear, so some areas may be severely worn while others remain relatively intact. However, because the front guard is one-piece, even if only a portion of the area is severely worn, the entire guard must be replaced, increasing operational costs. Utility Model Content

[0004] The utility model proposes a front guard plate for a flow passage of a slurry pump, which solves the problem that the front guard plate in the related art adopts an integrated design, resulting in the need to replace the entire front guard plate even if only some areas are severely worn, thereby increasing the cost of use.

[0005] The technical solution of the utility model is as follows:

[0006] A front guard plate of a flow-through part of a slurry pump comprises a center plate, an inlet pipe is provided in the middle of the center plate, a plurality of arc-shaped peripheral plates are provided on the edge of the center plate, and the plurality of arc-shaped peripheral plates are arranged circumferentially around the center plate, and an annular edge plate is provided on the side of the arc-shaped peripheral plate facing away from the center plate, the center plate comprises a first inner layer and two first outer layers, the first inner layer is located between the two first outer layers, the first outer layer is fixedly connected to the first inner layer, the arc-shaped peripheral plate comprises a second inner layer and two second outer layers, the second inner layer is located between the two second outer layers, the second outer layer is fixedly connected to the second inner layer, a first connecting structure is provided between the arc-shaped peripheral plate and the center plate, the arc-shaped peripheral plate and the center plate are detachably connected by the first connecting structure, a second connecting structure is provided between adjacent arc-shaped peripheral plates, and adjacent arc-shaped peripheral plates are detachably connected by the second connecting structure, a third connecting structure is provided between the arc-shaped peripheral plate and the annular edge plate, and the arc-shaped peripheral plate and the annular edge plate are detachably connected by the third connecting structure.

[0007] Furthermore, the first connecting structure includes a second annular fixing groove, a second arc-shaped fixing plate, two first annular fixing grooves, and two first arc-shaped fixing plates, the second annular fixing groove is located on the side of the first inner layer facing the arc-shaped peripheral plate, the two first annular fixing grooves are respectively located on the side of the two first outer layers facing the arc-shaped peripheral plates, the second arc-shaped fixing plate is located on the side of the second inner layer facing the center plate, the two first arc-shaped fixing plates are respectively located on the side of the two second outer layers facing the center plate, the two first arc-shaped fixing plates are respectively embedded in the two first annular fixing grooves, and the second arc-shaped fixing plate is embedded in the second annular fixing groove.

[0008] Further, the second connecting structure includes a second fixing protrusion, a second fixing groove, two first fixing protrusions, and two first fixing grooves, the first fixing protrusion and the second fixing groove are respectively located on both sides of the same second inner layer facing the adjacent arc-shaped peripheral plates, the two first fixing protrusions are respectively located on the two second outer layers of the same arc-shaped peripheral plate, the first fixing protrusion and the second fixing protrusion are located on the same side of the arc-shaped peripheral plate, the two first fixing grooves are respectively located on the two second outer layers of the same arc-shaped peripheral plate, the first fixing groove and the second fixing groove are located on the same side of the arc-shaped peripheral plate, adjacent first fixing protrusions are embedded in adjacent first fixing grooves, and adjacent second fixing protrusions are embedded in adjacent second fixing grooves.

[0009] Furthermore, the third connecting structure includes an arc-shaped convex plate and an annular groove body, the arc-shaped convex plate is located on the side of the arc-shaped peripheral plate facing the annular edge plate, the annular groove body is located on the annular edge plate, the annular groove body extends toward the inner edge of the annular groove body and extends out of the annular groove body, and the arc-shaped convex plate is embedded in the annular groove body.

[0010] Furthermore, the arcuate peripheral plate is provided with a plurality of fixing members, the fixing members are located at the connection between the arcuate peripheral plate and the annular edge plate, and the fixing members are detachably connected to the arcuate peripheral plate and the annular edge plate.

[0011] Furthermore, the first outer layer, the second outer layer, and the annular edge plate are all made of high-chromium cast iron material, and the first inner layer and the second inner layer are both made of silicon carbide ceramic material.

[0012] The working principle and beneficial effects of the utility model are as follows:

[0013] The present invention divides the front guard plate into multiple independent modules, wherein the middle is a center plate, the periphery of the center plate is a number of arc-shaped peripheral plates, the periphery of the arc-shaped peripheral plates is an annular edge plate, and by setting the connection between the center plate and the arc-shaped peripheral plates, the adjacent arc-shaped peripheral plates, and the arc-shaped peripheral plates and the annular edge plates as detachable connections, each independent module can be replaced individually, and only the severely worn parts need to be replaced during replacement, thereby reducing maintenance costs. The present invention arranges a first outer layer and a first inner layer, a second outer layer and a second inner layer, so that the center plate and the arc-shaped peripheral plates can be composed to form a composite material structure. The composite material structure improves wear resistance and impact resistance, thereby extending the service life of each module and reducing the need for frequent replacement due to wear. The present invention solves the problem in the related art that the front guard plate adopts an integrated design, resulting in the need to replace the entire front guard plate as a whole even if only some areas are severely worn, thereby increasing the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0015] Figure 1 This is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is an exploded view of the utility model;

[0017] Figure 3 It is a back view of the utility model;

[0018] Figure 4 This is a schematic diagram of the center plate structure of the present utility model;

[0019] Figure 5 This is a schematic diagram of the arc-shaped peripheral plate structure of the present utility model;

[0020] Figure 6 This is an exploded view of the arc-shaped peripheral plate of the present invention;

[0021] Figure 7 This is a schematic structural diagram of the annular edge plate of the present utility model.

[0022] In the figure: 1. Center plate; 2. Arc-shaped peripheral plate; 3. Annular edge plate; 11. First outer layer; 12. First inner layer; 13. Inlet pipe; 21. Second outer layer; 22. Second inner layer; 23. Arc-shaped convex plate; 29. ​​Fixing piece; 31. Annular groove body; 111. First annular fixing groove; 121. Second annular fixing groove; 211. First arc-shaped fixing plate; 212. First fixing convex plate; 213. First fixing groove; 221. Second arc-shaped fixing plate; 222. Second fixing convex plate; 223. Second fixing groove. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] like Figures 1 to 7 As shown, this embodiment proposes a front guard plate of a slurry pump flow component, including a center plate 1, an inlet pipe 13 is arranged in the middle of the center plate 1, a plurality of arc-shaped peripheral plates 2 are arranged on the edge of the center plate 1, and the plurality of arc-shaped peripheral plates 2 are arranged circumferentially around the center plate 1, and an annular edge plate 3 is arranged on the side of the arc-shaped peripheral plate 2 away from the center plate 1, the center plate 1 includes a first inner layer 12 and two first outer layers 11, the first inner layer 12 is located between the two first outer layers 11, and the first outer layer 11 is fixedly connected to the first inner layer 12, the arc-shaped peripheral plate 2 includes a second inner layer 22 and two second outer layers 21, the second inner layer 22 is located between the two second outer layers 21, and the second outer Layer 21 is fixedly connected to the second inner layer 22, a first connecting structure is set between the arc-shaped peripheral plate 2 and the center plate 1, and the arc-shaped peripheral plate and the center plate 1 are detachably connected through the first connecting structure, a second connecting structure is set between adjacent arc-shaped peripheral plates 2, and adjacent arc-shaped peripheral plates are detachably connected through the second connecting structure, a third connecting structure is set between the arc-shaped peripheral plate 2 and the annular edge plate 3, and the arc-shaped peripheral plate 2 and the annular edge plate 3 are detachably connected through the third connecting structure, the first outer layer 11, the second outer layer 21, and the annular edge plate 3 are all made of high chromium cast iron material, and the first inner layer 12 and the second inner layer 22 are both made of silicon carbide ceramic material.

[0025] The center plate 1 provides primary structural support, bearing the primary operating pressures and stresses of the slurry pump. It guides the medium into the pump via the central inlet pipe 13. The curved peripheral plates 2 surround the center plate 1, forming the primary flow area of ​​the pump cavity. Their curved design allows for a tighter connection to the center plate 1. The annular edge plate 3 connects the curved peripheral plates 2 to complete the pump cavity structure, providing additional support and sealing to prevent leakage. The first inner layer 12 and the second inner layer 22 are both constructed of silicon carbide ceramic, providing primary wear resistance. Silicon carbide ceramic boasts high hardness, high wear resistance, excellent corrosion resistance, and high-temperature stability. The first outer layer 11 and the second outer layer 21 are both constructed of high-chromium cast iron, providing structural support and impact resistance. High-chromium cast iron has excellent wear and corrosion resistance, making it suitable for high-wear and corrosive environments. A first connecting structure connects the curved peripheral plates 2 to the center plate 1, forming a complete flow cavity. A second connecting structure interconnects adjacent curved peripheral plates 2, ensuring a tight fit. The third connecting structure connects the curved perimeter plate 2 to the annular edge plate 3, forming a complete outer boundary. The removable connection of the first, second, and third connecting structures allows for independent replacement of each component of the front guard, significantly reducing maintenance costs. The composite material structure of the first inner layer 12, second inner layer 22, first outer layer 11, and second outer layer 21 improves the wear and impact resistance of each component, extending the overall service life.

[0026] In this embodiment, the first connecting structure includes a second annular fixing groove 121, a second arc-shaped fixing plate 221, two first annular fixing grooves 111, and two first arc-shaped fixing plates 211. The second annular fixing groove 121 is located on the side of the first inner layer 12 facing the arc-shaped peripheral plate 2, the two first annular fixing grooves 111 are respectively located on the side of the two first outer layers 11 facing the arc-shaped peripheral plate 2, the second arc-shaped fixing plate 221 is located on the side of the second inner layer 22 facing the center plate 1, the two first arc-shaped fixing plates 211 are respectively located on the side of the two second outer layers 21 facing the center plate 1, the two first arc-shaped fixing plates 211 are respectively embedded in the two first annular fixing grooves 111, and the second arc-shaped fixing plate 221 is embedded in the second annular fixing groove 121.

[0027] The second annular fixing groove 121 is used to provide a position and fixed support for the insertion of the second arc-shaped fixing plate 221. The first arc-shaped fixing plate 211 and the second arc-shaped fixing plate 221 are used to be inserted into the first annular fixing groove 111 or the second annular fixing groove 121 to fix the connection between the arc-shaped peripheral plate 2 and the center plate 1. The first annular fixing groove 111 is used to provide a position and fixed support for the insertion of the two first arc-shaped fixing plates 211. The design of the first connection structure is intended to ensure a stable connection between the arc-shaped peripheral plate 2 and the center plate 1 through the cooperation of the fixing groove and the fixing plate. The second annular fixing groove 121 and the second arc-shaped fixing plate 221 provide the main structural support to ensure that the arc-shaped peripheral plate 2 will not shift or loosen during operation. The embedded design of the two first annular fixing grooves 111 and the two first arc-shaped fixing plates 211 further enhances the stability and reliability of the connection and reduces the risk of loosening due to operating vibration or media impact. If necessary, the curved peripheral plate 2 can be provided with a plurality of fixing members 29 (bolts can be used). The fixing members 29 pass through the first annular fixing groove 111 and the first curved fixing plate 211 or the second annular fixing groove 121 and the second curved fixing plate 221 to further strengthen the connection between the curved peripheral plate 2 and the center plate 1. This embedded connection between the first curved fixing plate 211 and the first annular fixing groove 111, the second annular fixing groove 121, and the second curved fixing plate 221 allows for easy disassembly of the connection between the curved peripheral plate 2 and the center plate 1 when maintenance or replacement is required, thereby reducing replacement costs.

[0028] In this embodiment, the second connecting structure includes a second fixing protrusion 222, a second fixing groove 223, two first fixing protrusions 212, and two first fixing grooves 213. The first fixing protrusion 212 and the second fixing groove 223 are respectively located on both sides of the same second inner layer 22 facing the adjacent arc-shaped peripheral plate 2. The two first fixing protrusions 212 are respectively located on the two second outer layers 21 of the same arc-shaped peripheral plate 2. The first fixing protrusion and the second fixing protrusion are located on the same side of the arc-shaped peripheral plate 2. The two first fixing grooves 213 are respectively located on the two second outer layers 21 of the same arc-shaped peripheral plate 2. The first fixing groove 213 and the second fixing groove 223 are located on the same side of the arc-shaped peripheral plate 2. Adjacent first fixing protrusions are embedded in adjacent first fixing grooves 213, and adjacent second fixing protrusions are embedded in adjacent second fixing grooves 223.

[0029] The second fixing protrusion 222 is inserted into the second fixing groove 223 of the adjacent curved peripheral plate 2, thereby connecting the curved peripheral plate 2 to the other adjacent curved peripheral plates 2. The second fixing groove 223 provides a position and fixed support for the second fixing protrusion 222 of the adjacent curved peripheral plate 2. The two first fixing protrusions 212 are inserted into the first fixing groove 213 of the adjacent curved peripheral plate 2, further securing the connection between the two adjacent curved peripheral plates 2. The two first fixing grooves 213 provide a position and fixed support for the first fixing protrusions 212 of the adjacent curved peripheral plates 2. If necessary, the curved peripheral plate 2 can be provided with multiple fixing members 29 (e.g., bolts) that pass through the first fixing groove 213 and the first fixing protrusion 212, or the second fixing groove 223 and the second fixing protrusion 222, to further connect the two adjacent curved peripheral plates 2. The second connection structure ensures the structural stability between the curved peripheral plate 2 and the adjacent components through the cooperation of the protrusions and grooves.

[0030] In this embodiment, the third connection structure includes a curved protrusion 23 and an annular groove 31. The curved protrusion 23 is located on the side of the curved peripheral plate 2 facing the annular edge plate 3. The annular groove 31 is located on the annular edge plate 3 and extends toward and beyond the inner edge of the annular groove 31. The curved protrusion 23 is embedded within the annular groove 31. The curved peripheral plate 2 is provided with a plurality of fixing members 29. The fixing members 29 are located at the connection between the curved peripheral plate 2 and the annular edge plate 3 and are removably connected to the curved peripheral plate 2 and the annular edge plate 3. The curved protrusion 23 is inserted into the annular groove 31, forming a tight connection between the curved peripheral plate 2 and the annular edge plate 3. The annular groove 31 is used to accommodate and secure the curved protrusion 23, forming a stable connection. The third connection structure achieves a tight connection between the curved peripheral plate 2 and the annular edge plate 3 through the cooperation between the curved protrusion 23 and the annular groove 31. The fixing members 29 (bolts may be used) are used to provide additional support and connection security. The detachable connection design of the fixing members 29 allows the connection between the arc-shaped peripheral plate 2 and the annular edge plate 3 to be easily disassembled when maintenance or replacement is required.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A front guard plate of a slurry pump flow member, comprising a center plate (1), wherein an inlet pipe (13) is provided in the middle of the center plate (1), characterized in that: The edge of the center plate (1) is provided with a plurality of arc-shaped peripheral plates (2), and the plurality of arc-shaped peripheral plates (2) are arranged circumferentially around the center plate (1). The side of the arc-shaped peripheral plate (2) facing away from the center plate (1) is provided with an annular edge plate (3). The center plate (1) includes a first inner layer (12) and two first outer layers (11), the first inner layer (12) is located between the two first outer layers (11), and the first outer layer (11) is fixedly connected to the first inner layer (12). The arc-shaped peripheral plate (2) includes a second inner layer (22) and two second outer layers (21), and the second inner layer (22) is located between the two first outer layers (11). Between the two second outer layers (21), the second outer layer (21) is fixedly connected to the second inner layer (22); a first connection structure is provided between the arc-shaped peripheral plate (2) and the center plate (1); the arc-shaped peripheral plate and the center plate (1) are detachably connected via the first connection structure; a second connection structure is provided between adjacent arc-shaped peripheral plates (2); adjacent arc-shaped peripheral plates are detachably connected via the second connection structure; a third connection structure is provided between the arc-shaped peripheral plate (2) and the annular edge plate (3); the arc-shaped peripheral plate (2) and the annular edge plate (3) are detachably connected via the third connection structure.

2. A slurry pump flow component front guard plate according to claim 1, characterized in that: The first connection structure comprises a second annular fixing groove (121), a second arc-shaped fixing plate (221), two first annular fixing grooves (111), and two first arc-shaped fixing plates (211), wherein the second annular fixing groove (121) is located on the side of the first inner layer (12) facing the arc-shaped peripheral plate (2), the two first annular fixing grooves (111) are respectively located on the side of the two first outer layers (11) facing the arc-shaped peripheral plate (2), the second arc-shaped fixing plate (221) is located on the side of the second inner layer (22) facing the center plate (1), the two first arc-shaped fixing plates (211) are respectively located on the side of the two second outer layers (21) facing the center plate (1), the two first arc-shaped fixing plates (211) are respectively embedded in the two first annular fixing grooves (111), and the second arc-shaped fixing plate (221) is embedded in the second annular fixing groove (121).

3. A slurry pump flow component front guard plate according to claim 1, characterized in that: The second connection structure comprises a second fixing convex plate (222), a second fixing groove (223), two first fixing convex plates (212), and two first fixing grooves (213); the first fixing convex plate (212) and the second fixing groove (223) are respectively located on both sides of the same second inner layer (22) facing the adjacent arc-shaped peripheral plate (2); the two first fixing convex plates (212) are respectively located on the two second outer layers (21) of the same arc-shaped peripheral plate (2); the first fixing convex plate and the second fixing convex plate are respectively located on the same side of the arc-shaped peripheral plate (2); the two first fixing grooves (213) are respectively located on the two second outer layers (21) of the same arc-shaped peripheral plate (2); the first fixing groove (213) and the second fixing groove (223) are respectively located on the same side of the arc-shaped peripheral plate (2); adjacent first fixing convex plates are embedded in adjacent first fixing grooves (213); and adjacent second fixing convex plates are embedded in adjacent second fixing grooves (223).

4. A slurry pump flow component front guard plate according to claim 1, characterized in that: The third connecting structure comprises an arc-shaped convex plate (23) and an annular groove body (31), wherein the arc-shaped convex plate (23) is located on a side of the arc-shaped peripheral plate (2) facing the annular edge plate (3), and the annular groove body (31) is located on the annular edge plate (3). The annular groove body (31) extends toward the inner edge of the annular groove body (31) and extends out of the annular groove body (31), and the arc-shaped convex plate (23) is embedded in the annular groove body (31).

5. A front guard plate of a slurry pump flow component according to claim 4, characterized in that: The arc-shaped peripheral plate (2) is provided with a plurality of fixing members (29), the fixing members (29) being located at the connection between the arc-shaped peripheral plate (2) and the annular edge plate (3), and the fixing members (29) are detachably connected to the arc-shaped peripheral plate (2) and the annular edge plate (3).

6. A slurry pump flow component front guard plate according to claim 1, characterized in that: The first outer layer (11), the second outer layer (21), and the annular edge plate (3) are all made of high-chromium cast iron material, and the first inner layer (12) and the second inner layer (22) are both made of silicon carbide ceramic material.

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