Novel upper abrasion disc for mine sewage pump

Abstract

The utility model relates to the field of sewage pumps, in particular to a novel upper abrasion disc for a mine sewage pump, which comprises a pump body, a disc and an impeller. A rear shell is arranged on the pump body, a front shell is installed at one end of the rear shell, and a first water outlet piece is arranged on the front shell. The rotatable cutting piece is arranged in the first groove body, when water flow containing impurities passes through, the cutter rotates along with the sleeve to dynamically smash the impurities, impact abrasion of large particles to the pump shell is effectively reduced, the first inclined block and the second inclined block arranged in the abrasion disc are of a crossed triangular structure, the water flow is guided to form alternate reverse vortexes, and the abrasion of the water flow is effectively reduced. The first water outlet piece and the second water outlet piece are of a split type threaded barrel connecting structure and are convenient to disassemble and assemble, and the problems that when an upper abrasion disc for a sewage pump in the prior art is used, impurities in water are usually difficult to smash through the abrasion disc, and the abrasion disc is prone to being damaged are solved. And the protection of the pump shell cannot be improved.

Description

Technical Field

[0001] The utility model belongs to the field of sewage pumps, and particularly relates to an upper wear plate for a new type of mine sewage pump. Background Technique

[0002] In a centrifugal mine sewage pump, the upper wear plate is usually located near the water outlet end (high-pressure side) of the impeller. The water inlet end is the inlet area where the fluid enters the impeller. Here, the flow velocity is low, the pressure is small, and the impact kinetic energy of the particles is relatively low. The wear is mainly concentrated on the water-facing surface of the impeller blades. The water outlet end is the area where the impeller throws out the high-speed fluid. Here, the flow velocity is high, the pressure is high, and the fluid direction changes sharply. The upper wear plate is usually designed in the gap area between the impeller and the pump casing to resist the direct erosion of the high-speed particle-containing fluid.

[0003] Since the fluid kinetic energy in the gap area between the impeller and the pump casing is the largest, the cutting and impact of the solid particles on the wear plate are the most intense, so it becomes the wear concentration area. However, when the upper wear plate for the sewage pump in the prior art is in use, it is usually difficult to crush the impurities in the water through the wear plate, and the protection of the pump casing cannot be improved, which needs to be further improved.

[0004] Therefore, an upper wear plate for a new type of mine sewage pump is proposed. When in use, the impurities in the water can be crushed through the wear plate, and the protection of the pump casing can be improved. Content of the Utility Model

[0005] In order to overcome the problem that when the upper wear plate for the sewage pump in the prior art is in use, it is usually difficult to crush the impurities in the water through the wear plate and the protection of the pump casing cannot be improved, therefore, an upper wear plate for a new type of mine sewage pump is proposed.

[0006] The technical solution of the utility model is: an upper wear plate for a new type of mine sewage pump, which includes a pump body, a disc and an impeller; a rear shell is provided on the pump body, a front shell is installed at one end of the rear shell, a first water outlet member is provided on the front shell, a second water outlet member is provided on the rear shell, a first water outlet hole is penetrated and opened at the upper end of the wear plate body, a first groove is opened at one end of the wear plate body, a second water outlet hole is penetrated and opened at the top surface of the inner wall of the wear plate body, the disc is located inside the rear shell, the inner wall of the disc is fixedly connected to the side wall of the pump body rotating shaft, a uniformly distributed impeller is fixedly connected to one end of the disc, an inner ring is fixedly connected to the middle of the inner wall of the wear plate body, a uniformly distributed first inclined block is fixedly connected to one end of the inner ring, a uniformly distributed second inclined block is fixedly connected to the inner wall of the wear plate body, four uniformly distributed second grooves are penetrated and opened on the inner wall of the wear plate body, the second grooves are located between the second inclined block and the first inclined block, and a cutting member is provided in the first groove.

[0007] Preferably, the first water outlet member includes a first half pipe and a first externally threaded half pipe. The upper end of the front shell is fixedly connected to the first half pipe, and the inner wall of the first half pipe is fixedly connected to the first externally threaded half pipe. There is a semi-circular annular groove between the first externally threaded half pipe and the first half pipe.

[0008] Preferably, the second water outlet member includes a second half pipe and a second externally threaded half pipe. The upper end of the rear shell is fixedly connected to the second half pipe, and the inner wall of the second half pipe is fixedly connected to the second externally threaded half pipe. There is a semi-circular annular groove between the second half pipe and the second externally threaded half pipe. The second half pipe and the first half pipe are mutually attached to form a cylindrical shape, and the second externally threaded half pipe and the first externally threaded half pipe are mutually attached to form a cylindrical shape. A threaded cylinder is commonly threadedly installed on the side walls after the first externally threaded half pipe and the second externally threaded half pipe are attached to each other.

[0009] Preferably, the first water outlet hole communicates with the first groove body, the second water outlet hole communicates with the first groove body, the second water outlet hole corresponds to the first water outlet hole, and the inner diameter of the second water outlet hole is smaller than the inner diameter of the first water outlet hole.

[0010] Preferably, both the first inclined block and the second inclined block are triangular structures, and the orientations of the tips of the first inclined block and the second inclined block intersect with each other.

[0011] Preferably, the cutting member includes a fixing column, a sleeve, and a cutter. The inner wall of the first groove body is fixedly connected with evenly distributed fixing columns. The side wall of the fixing column is rotatably installed with a sleeve, and the side wall of the sleeve is fixedly connected with evenly distributed cutters.

[0012] Preferably, there is a gap between the cutter and the inner wall of the first groove body.

[0013] The beneficial effects of the present utility model are as follows: By arranging a rotatable cutting member in the first groove body, when the impurity-containing water flow passes through, the cutter rotates with the sleeve to dynamically crush the impurities, effectively reducing the impact wear of large particles on the pump shell. The first inclined block and the second inclined block arranged in the wear plate adopt a cross-triangular structure to guide the water flow to form an alternating reverse eddy current, forcing the solid particles to repeatedly collide and rub, further refining the impurity size. The first water outlet member and the second water outlet member adopt a split-type threaded cylinder connection structure, which is convenient for disassembly and assembly, and solves the problem that in the prior art, when the upper wear plate of a sewage pump is in use, it is usually difficult to crush the impurities in the water body through the wear plate and cannot improve the protection of the pump shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Shown is a three-dimensional structural schematic diagram of an upper wear plate for a new type of mine sewage pump of the present utility model;

[0015] Figure 2 Shown is a three-dimensional structural schematic diagram of the front shell of an upper wear plate for a new type of mine sewage pump of the present utility model;

[0016] Figure 3 Shown is a three-dimensional split structural schematic diagram of the first external thread half pipe and the threaded cylinder of the upper wear plate for a new type of mine sewage pump of the present utility model;

[0017] Figure 4 Shown is a three-dimensional structural schematic diagram of the rear shell of the upper wear plate for a new type of mine sewage pump of the present utility model;

[0018] Figure 5 Shown is a three-dimensional structural schematic diagram of the first water outlet hole of the upper wear plate for a new type of mine sewage pump of the present utility model;

[0019] Figure 6 Shown is of the upper wear plate for a new type of mine sewage pump of the present utility model Figure 4 The three-dimensional structural schematic diagram of the partial enlargement at A in;

[0020] Figure 7 Shown is a three-dimensional structural schematic diagram of the impeller of the upper wear plate for a new type of mine sewage pump of the present utility model;

[0021] Figure 8 Shown is a three-dimensional structural schematic diagram of the wear plate body of the upper wear plate for a new type of mine sewage pump of the present utility model;

[0022] Figure 9 Shown is a three-dimensional structural schematic diagram of the cutter of the upper wear plate for a new type of mine sewage pump of the present utility model;

[0023] Figure 10 Shown is of the upper wear plate for a new type of mine sewage pump of the present utility model Figure 9 The three-dimensional structural schematic diagram of the partial enlargement at B in.

[0024] The reference signs in the drawings are: 1, pump body; 2, rear shell; 3, front shell; 4, first half pipe; 5, first external thread half pipe; 6, threaded cylinder; 7, second half pipe; 8, second external thread half pipe; 9, wear plate body; 10, first groove body; 11, first water outlet hole; 12, second water outlet hole; 13, disc; 14, impeller; 15, inner ring; 16, first inclined block; 17, second groove body; 18, second inclined block; 19, fixed column; 20, sleeve; 21, cutter. Detailed implementation manners

[0025] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0026] Embodiment 1: Please refer to Figures 1 - 9, A novel upper wear plate for a mine sewage pump, comprising a pump body 1, a disc 13 and an impeller 14; a rear housing 2 is provided on the pump body 1, a front housing 3 is installed at one end of the rear housing 2, a first water outlet member is provided on the front housing 3, a second water outlet member is provided on the rear housing 2, a first water outlet hole 11 is penetrated and opened at the upper end of the wear plate body 9, a first groove 10 is opened at one end of the wear plate body 9, a second water outlet hole 12 is penetrated and opened at the top surface of the inner wall of the wear plate body 9, the disc 13 is located inside the rear housing 2, the inner wall of the disc 13 is fixedly connected to the side wall of the rotating shaft of the pump body 1, a uniformly distributed impeller 14 is fixedly connected to one end of the disc 13, an inner ring 15 is fixedly connected to the middle of the inner wall of the wear plate body 9, a uniformly distributed first inclined block 16 is fixedly connected to one end of the inner ring 15, a uniformly distributed second inclined block 18 is fixedly connected to the inner wall of the wear plate body 9, four uniformly distributed second grooves 17 are penetrated and opened in the inner wall of the wear plate body 9, the second grooves 17 are located between the second inclined block 18 and the first inclined block 16, and a cutting member is provided in the first groove 10.

[0027] By setting the intercommunication structure of the first water outlet hole 11, the second water outlet hole 12 and the first groove 10, a hierarchical water passing channel is formed to realize the control of the pressure gradient of the water flow, effectively adjust the discharge speed of the crushed particles. By arranging the second groove 17 between the first inclined block 16 and the second inclined block 18, a turbulent flow buffer area is formed, prolonging the residence time of the solid particles. Under the action of the water flow, it is beneficial for the solid particles to be chopped by the first inclined block 16 and the second inclined block 18, improving the crushing effect.

[0028] Please refer to Figures 1 - 4 , In this embodiment, the first water outlet member includes a first half pipe 4 and a first external thread half pipe 5. The first half pipe 4 is fixedly connected to the upper end of the front housing 3, the first external thread half pipe 5 is fixedly connected to the inner wall of the first half pipe 4, and a semi-circular annular groove is provided between the first external thread half pipe 5 and the first half pipe 4, which is convenient for fitting and installing with the second half pipe 7.

[0029] Please refer to Figures 1 - 4 , In this embodiment, the second water outlet member includes a second half pipe 7 and a second external thread half pipe 8; the second half pipe 7 is fixedly connected to the upper end of the rear housing 2, the second external thread half pipe 8 is fixedly connected to the inner wall of the second half pipe 7, a semi-circular annular groove is provided between the second half pipe 7 and the second external thread half pipe 8, the second half pipe 7 and the first half pipe 4 are mutually fitted to form a cylindrical shape, the second external thread half pipe 8 and the first external thread half pipe 5 are mutually fitted to form a cylindrical shape, and a threaded cylinder 6 is commonly threadedly installed on the side wall after the first external thread half pipe 5 and the second external thread half pipe 8 are mutually fitted. By setting the first external thread half pipe 5, the second external thread half pipe 8 and the threaded cylinder 6, rapid disassembly and maintenance can be realized, facilitating the cleaning of the blockage at the water outlet.

[0030] Please refer to Figure 6, in this embodiment, the first water outlet hole 11 communicates with the first tank body 10, the second water outlet hole 12 communicates with the first tank body 10, the second water outlet hole 12 corresponds to the first water outlet hole 11, and the inner diameter of the second water outlet hole 12 is smaller than that of the first water outlet hole 11, which is beneficial to the outflow of water.

[0031] Please refer to Figure 1 and Figure 8 , in this embodiment, both the first inclined block 16 and the second inclined block 18 are triangular structures, the tip orientations of the first inclined block 16 and the second inclined block 18 cross each other, and the cross-triangular layout of the first inclined block 16 and the second inclined block 18 is beneficial to the collision and crushing of particles.

[0032] Embodiment 2: Please refer to Figure 9 , on the basis of Embodiment 1, the present application provides a technical solution: the cutting member includes a fixed column 19, a sleeve 20 and a cutter 21; the inner wall of the first tank body 10 is fixedly connected with uniformly distributed fixed columns 19, the side wall of the fixed column 19 is rotatably installed with a sleeve 20, the side wall of the sleeve 20 is fixedly connected with uniformly distributed cutters 21, there is a gap between the cutter 21 and the inner wall of the first tank body 10, and the design of the rotary pair of the fixed column 19 and the sleeve 20 realizes the non-powered self-rotating cutting. The arrangement of multiple cutters 21 circumferentially uniformly distributed on the sleeve 20 forms a continuous cutting surface, improving the crushing effect on particles.

[0033] Working principle: First, the second half pipe 7 and the first half pipe 4 are mutually attached to form a cylindrical shape. At this time, the second externally threaded half pipe 8 and the first externally threaded half pipe 5 are mutually attached to form a cylindrical shape. Then, a threaded cylinder 6 is commonly threadedly installed on the outer side wall formed after the first externally threaded half pipe 5 and the second externally threaded half pipe 8 are attached, and the joint of the rear shell 2 and the front shell 3 is welded;

[0034] After the pump body 1 is started, the rotating shaft of the pump body 1 drives the disc 13 and the impeller 14 to rotate, generating a centrifugal force to suck the water flow containing impurities from the water inlet. Under the action of the water flow pressure, the solid particles are pushed towards the cross-triangular structure area formed by the first inclined block 16 and the second inclined block 18. Since the tip orientations of the first inclined block 16 and the second inclined block 18 are opposite, an alternating reverse eddy current is formed in this area, forcing the solid particles to repeatedly collide and rub, which can refine the particles in the water;

[0035] The water flow finally enters the first tank body 10 through the second water outlet hole 12. Under the push of the impeller 14, the water flow drives the cutter 21 on the sleeve 20 to rotate, cutting and crushing the large particle impurities in the water flow;

[0036] Since the inner diameter of the second water outlet hole 12 is smaller than that of the first water outlet hole 11, a Venturi effect is formed to accelerate the discharge of water flow and prevent particle backflow. Finally, the treated water flow passes through the first water outlet hole 11 and is discharged from the cylindrical structure formed by the mutual fitting of the second externally threaded half pipe 8 and the first externally threaded half pipe 5.

Claims

1. A novel upper wear plate for a mine sewage pump, comprising a pump body (1), a disc (13) and an impeller (14); characterized in that: A pump body (1) is provided with a rear shell (2), one end of the rear shell (2) is provided with a front shell (3), a first water outlet member is provided on the front shell (3), a second water outlet member is provided on the rear shell (2), a first water outlet hole (11) is provided through the upper end of the wear disc body (9), a first groove body (10) is provided at one end of the wear disc body (9), a second water outlet hole (12) is provided through the top surface of the inner wall of the wear disc body (9), a disc (13) is located inside the rear shell (2), an inner wall of the disc (13) is fixedly connected to the side wall of the rotating shaft of the pump body (1), and the disc (13) is provided at the upper end of the wear disc body (9). One end of the wear plate (13) is fixedly connected to an evenly distributed impeller (14), the middle of the inner wall of the wear plate (9) is fixedly connected to an inner ring (15), one end of the inner ring (15) is fixedly connected to an evenly distributed first inclined block (16), the inner wall of the wear plate (9) is fixedly connected to an evenly distributed second inclined block (18), the inner wall of the wear plate (9) is penetrated by four evenly distributed second grooves (17), the second grooves (17) are located between the second inclined block (18) and the first inclined block (16), and a cutting piece is arranged in the first groove (10).

2. The novel upper wear plate for a mine sewage pump according to claim 1 is characterized in that: The first water outlet member comprises a first half pipe (4) and a first externally threaded half pipe (5); the first half pipe (4) is fixedly connected to the upper end of the front shell (3); the first externally threaded half pipe (5) is fixedly connected to the inner wall of the first half pipe (4); and a semicircular annular groove is present between the first externally threaded half pipe (5) and the first half pipe (4).

3. The new upper wear plate for a mine sewage pump according to claim 1 is characterized in that: The second water outlet member comprises a second half pipe (7) and a second externally threaded half pipe (8); the second half pipe (7) is fixedly connected to the upper end of the rear shell (2); the second externally threaded half pipe (8) is fixedly connected to the inner wall of the second half pipe (7); a semicircular annular groove is present between the second half pipe (7) and the second externally threaded half pipe (8); the second half pipe (7) and the first half pipe (4) are fitted together to form a cylindrical shape; the second externally threaded half pipe (8) and the first externally threaded half pipe (5) are fitted together to form a cylindrical shape; and a threaded cylinder (6) is threadedly mounted on the side walls of the first externally threaded half pipe (5) and the second externally threaded half pipe (8) after fitting together.

4. The novel upper wear plate for a mine sewage pump according to claim 1 is characterized in that: The first water outlet hole (11) and the first trough body (10) are interconnected, the second water outlet hole (12) and the first trough body (10) are interconnected, the second water outlet hole (12) and the first water outlet hole (11) correspond to each other, and the inner diameter of the second water outlet hole (12) is smaller than the inner diameter of the first water outlet hole (11).

5. The novel upper wear plate for a mine sewage pump according to claim 1 is characterized in that: The first inclined block (16) and the second inclined block (18) are both triangular structures, and the direction of the tip of the first inclined block (16) and the direction of the tip of the second inclined block (18) intersect each other.

6. The novel upper wear plate for a mine sewage pump according to claim 1 is characterized in that: The cutting member comprises a fixed column (19), a sleeve (20) and a cutter (21); the inner wall of the first trough body (10) is fixedly connected to the evenly distributed fixed columns (19), the side wall of the fixed column (19) is rotatably mounted with the sleeve (20), and the side wall of the sleeve (20) is fixedly connected to the evenly distributed cutter (21).

7. The new upper wear plate for a mine sewage pump according to claim 6 is characterized by: There is a gap between the cutting blade (21) and the inner wall of the first trough body (10).

Images