Mining submersible slurry pump with stirring and crushing functions

Abstract

A mining submersible slurry pump with stirring and crushing functions comprises a pump body and an impeller, a rotating shaft for driving the impeller to rotate is rotatably arranged in the pump body, a filter cylinder is arranged at a water inlet of the pump body through a detachable structure, the rotating shaft extends into the filter cylinder and is provided with a moving cutter through a fixed structure, and the filter cylinder is provided with a static cutter through a sliding structure. According to the mining submersible slurry pump, the stirring function, the crushing function, the shearing function and the automatic tensioning function of the movable cutter and the static cutter are integrated at the bottom of the pump body, the technological process is simplified, and the occupied area of equipment is reduced; the synergistic effect of the stirring assembly, the crushing assembly and the shearing assembly is optimized, the treatment capacity of complex ore pulp containing large-particle ore, coal cinder, silt, ropes, fibers and the like is improved, and the operation and maintenance cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of submersible slurry pumps, and particularly to a mine submersible slurry pump with stirring and crushing functions. Background Art

[0002] The mine vertical submersible slurry pump is a key equipment in the fields of mine exploitation, tailings treatment, etc. It is mainly used for the hydraulic transportation of slurry containing high-concentration solid particles. Its working environment usually has the characteristics of strong corrosiveness, high abrasion and complex medium composition, and has extremely high requirements for the reliability, anti-blocking ability and processing efficiency of the equipment.

[0003] At present, the traditional mine slurry pumps mainly adopt the following two design methods: First, a single-function pump body, which only has the conveying function and needs to work together with a crusher and a stirring tank to handle large-particle or easily deposited slurry; Second, a split-function design. Some improved slurry pumps achieve solid-liquid mixing through external stirring blades or independent crushing devices, but the stirring and crushing functions are still completed by separate mechanical structures, and the split structure is complex. For example: adding stirring blades at the pump body inlet to prevent particle deposition by rotation; connecting a crushing cutter head outside the pump body to pre-crush large particles.

[0004] The traditional slurry pumps have insufficient adaptability and poor extraction effect on large-particle or easily deposited slurry; the external stirring device is difficult to handle fibrous impurities, resulting in frequent shutdowns of the pump body for cleaning. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides a mine submersible slurry pump with stirring and crushing functions, and the technical problem to be solved is that fibrous impurities are easily wound around the impeller, resulting in frequent shutdowns of the pump body for cleaning. To solve the above technical problems, the technical solution adopted by the present invention is: A mine submersible slurry pump with stirring and crushing functions, characterized in that it includes: A pump body and an impeller, and a rotating shaft for driving the impeller to rotate is rotatably arranged in the pump body; A moving knife, which is connected to the rotating shaft extending outside the pump body in a fixed structure manner; A filter cylinder, which is sleeved outside the moving knife and connected to the pump body; A stationary knife, which is slidably connected to the filter cylinder; A tensioning device, which is connected to the stationary knife so that the stationary knife fits on the upper end face of the moving knife to form a shearing structure with the rotating moving knife.

[0006] Furthermore, a plurality of strip-shaped filter holes are spaced apart vertically along the circumferential wall of the filter cylinder; The stationary knife includes a sleeve sleeved outside the rotating shaft, and pressing plates are arranged on both sides of the sleeve in a fixed structure manner, and the two pressing plates respectively extend outwards through two opposite strip-shaped filter holes.

[0007] Further, the tensioning device includes a spring with one end connected to the pressing plate and the other end connected to the filter cartridge.

[0008] Further, hanging ears are arranged at the lower part of the filter cartridge in a fixed structure manner, a guide rod is arranged vertically between the hanging ears and the pressing plate, and the spring is sleeved outside the guide rod.

[0009] Further, the moving knife includes a fixed sleeve fixedly connected to the rotating shaft, at least two knife bodies are arranged on the outer peripheral wall of the fixed sleeve in a fixed structure manner, and the knife bodies are arranged in a spiral structure with a narrower lower part and a wider upper part.

[0010] Further, a limiting ring is arranged at the lower part of the filter cartridge in a fixed structure manner; The lower part of the knife body protrudes from the lower end face of the fixed sleeve and extends outside the limiting ring.

[0011] Further, the fixed sleeve is connected to the rotating shaft by bolts.

[0012] Further, a support seat is arranged at the lower part of the pump body in a fixed structure manner.

[0013] Further, the side wall at the water inlet of the pump body extends downward; A plurality of tightening bolts are arranged on the outer wall of the upper part of the filter cartridge in a threaded engagement structure manner, and the tightening bolts pass through the side wall of the filter cartridge and abut against the side wall at the strip-shaped filter holes of the pump body.

[0014] The beneficial effects of the present invention are as follows: The mining submersible slurry pump integrates functions of stirring, crushing, shearing, and automatic tensioning of the moving and static knives at the bottom of the pump body, simplifies the process flow, reduces the floor area of the equipment, optimizes the synergistic effect of the stirring, crushing, and shearing components, improves the processing capacity for complex slurries containing large particles, ores, coal cinders, sediment, ropes, fibers, etc., and reduces the operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic cross-sectional structure diagram of the present invention.

[0016] Figure 2 is an exploded schematic diagram of the lower part of the pump body in Embodiment 1 of the present invention.

[0017] Figure 3 is an exploded schematic diagram of the lower part of the pump body in Embodiment 3 of the present invention.

[0018] In the figure: 1. Pump body, 2. Impeller, 3. Rotating shaft, 4. Moving knife, 41. Fixed sleeve, 42. Knife body, 5. Filter cartridge, 6. Static knife, 61. Sleeve, 62. Pressing plate, 7. Tensioning device, 71. Spring, 72. Hanging ear, 73. Guide rod, 8. Strip-shaped filter hole, 9. Limiting ring, 10. Support seat, 11. Tightening bolt, 12. Drill bit, 13. Housing, 14. Water outlet. Detailed implementation mode

[0019] To make the purpose, technical solution and advantages of the implementation of the present invention clearer, the present invention will now be further described in detail with reference to the accompanying drawings and the following embodiments, so that the public can better master the implementation method of the present invention. The specific implementation scheme of the present invention is as follows: Embodiment 1, a mine diving slurry pump with stirring and crushing functions, includes a pump body 1 and an impeller 2. A rotating shaft 3 for driving the impeller 2 to rotate is rotatably arranged in the pump body 1. A filter cylinder 5 is arranged at the water inlet of the pump body 1 through a detachable structure. The rotating shaft 3 extends into the filter cylinder 5 and a moving knife 4 is arranged in a fixed structure manner. The filter cylinder 5 is arranged in a sliding structure with a static knife 6. A tensioning device 7 is also arranged, and the tensioning device 7 is connected to the static knife 6 so that the static knife 6 fits on the upper end face of the moving knife 4 to form a shearing structure with the rotating moving knife 4. This mine diving slurry pump integrates the functions of stirring, crushing, shearing, and automatic tensioning of the static and moving knives at the bottom of the pump body 1, simplifies the process flow, reduces the floor area of the equipment, optimizes the synergistic effect of the stirring, crushing, and shearing components, improves the processing capacity for complex slurries containing large particle ores, coal slags, sediment, ropes, fibers, etc., and reduces the operation and maintenance costs.

[0020] It should be noted that a plurality of strip-shaped filter holes 8 are arranged at intervals along the vertical direction on the circumferential wall of the filter cylinder 5. On the one hand, it can block larger objects and facilitate water inlet. On the other hand, it is convenient to install the static knife 6 and plays a limiting role for the static knife 6. The static knife 6 includes a sleeve 61 sleeved outside the rotating shaft 3. Pressure plates 62 are arranged on both sides of the sleeve 61 in a fixed structure manner, and the two pressure plates 62 respectively extend outwards through two opposite strip-shaped filter holes 8.

[0021] Specifically, the tensioning device 7 includes a spring 71 with one end connected to the pressure plate 62, and the other end of the spring 71 is connected to the filter cylinder 5. A pulling force is given to the pressure plate 62 through the spring 71, and the lower end face of the pressure plate 62 is abutted against the upper end face of the moving knife 4. The pressure plate 62 and the moving knife 4 form an annular shearing structure to shear fiber impurities; the spring 71 is moderately tightened so that the two sides always fit, avoiding the occurrence of poor shearing effect after wear and improving the shearing function.

[0022] It should be elaborated that an ear 72 for connecting the spring 71 is arranged at the lower part of the filter cylinder 5 in a fixed structure manner. A guide rod 73 is arranged vertically between the ear 72 and the pressure plate 62. The spring 71 is sleeved outside the guide rod 73. The guide rod 73 is fixedly connected to one of the ear 72 or the pressure plate 62, and the guide rod 73 is slidably connected to the other of the ear 72 or the pressure plate 62, which can ensure the vertical movement of the pressure plate 62 and also play a limiting role for the spring 71.

[0023] Specifically, the moving knife 4 includes a fixed sleeve 41 fixedly connected to the rotating shaft 3. The fixed sleeve 41 is connected to the rotating shaft 3 by bolts. The fixed sleeve 41 is arranged in an inverted frustum structure with a 4° taper. The outer peripheral wall of the fixed sleeve 41 is sleeved outside the rotating shaft (3) through a taper shank insertion structure. This fixed structure has high load-bearing capacity and rigidity, high-precision repeated positioning, extremely high concentricity, ensuring the rotation efficiency, facilitating installation and disassembly, and making it convenient to maintain and replace the moving knife. At the same time, it supports reverse rotation of the moving knife for shearing as well. The taper shank fixed sleeve is provided with at least two cutter bodies 42. In this embodiment, there are three cutter bodies 42. The cutter bodies 42 are in contact with the pressing plate 62. The cutter bodies 42 are arranged in a spiral structure that is narrower at the bottom and wider at the top, and the cutter bodies 42 are arranged with a 10° taper, forming a structure similar to a drill bit, which can crush larger granular ore materials. Due to the design of the spiral structure that is narrower at the bottom and wider at the top, the crushed particles are thrown to the inner wall of the filter cartridge for further collision, forming smaller particles, which is convenient for lifting.

[0024] A support seat 10 is arranged at the lower part of the pump body 1 in a fixed structure manner, providing an operating space for the moving knife 4.

[0025] The side wall at the water inlet of the pump body 1 extends downward. For the convenience of installation, a number of tightening bolts 11 are arranged on the outer wall of the upper part of the filter cartridge 5 through a threaded engagement structure. The tightening bolts 11 pass through the side wall of the filter cartridge 5 and abut against the side wall at the strip-shaped filter holes 8 of the pump body 1.

[0026] Embodiment 2: On the basis of the above embodiment, in this embodiment, a limit ring 9 is arranged at the lower part of the filter cartridge 5 in a fixed structure manner. The limit ring 9 can block large granular ores, preventing large granular ores from directly entering the interior of the filter cartridge through the lower inlet of the filter cartridge. As the rotation diameter of the cutter body 42 becomes larger and larger, it may cause large granular ores to get stuck between the filter cartridge 5 and the cutter body 42, resulting in the situation where the cutter body 42 cannot rotate, and reducing shutdowns.

[0027] Furthermore, in order to crush materials such as large granular ores, the lower part of the cutter body 42 protrudes from the lower end face of the fixed sleeve 41 and extends outside the limit ring 9, crushing the large granular ores accumulated at the limit ring 9 into smaller particles, improving the passability and extraction efficiency.

[0028] Embodiment 3: On the basis of the above embodiment, in this embodiment, a downward drill bit 12 is arranged at the lower end face of the bolt in a fixed structure manner. The lower part of the drill bit 12 is lower than the lower part of the cutter body 42 and extends outside the limit ring 9, increasing the crushing depth of large granular materials, preventing large granular materials from blocking the inlet of the limit ring 9, and improving the crushing efficiency.

[0029] In another embodiment, a housing 13 covering the pump body 1 is fixedly arranged outside the pump body 1. A cavity is formed between the housing 13 and the pump body 1. This cavity is connected to the water outlet of the volute. And a water outlet is provided in the upper part of the housing 13, which can cool the motor in the pump body 1 with water and improve the service life of the motor. This series of pumps also has a unique air-cooling structure. When the water flow is insufficient and the pump runs idly, at this time, it can rely on its own unique impeller air-cooling structure to dissipate heat, avoid the overheating of the motor, thus ensuring that the pump can operate with water drained, automatically drain water after water is available, and extend the service life of the whole machine.

[0030] Through the integrated design of the stirring shaft - crushing device - conveying, the process chain is shortened, and the energy loss caused by the collaborative operation of multiple devices is reduced. The measured energy consumption is reduced by 15% - 20%; the anti-blocking ability is significantly enhanced, avoiding the blocking problems caused by solid deposition or large-size particle jamming in the traditional pump body, and the failure rate is reduced by more than 40%; the space utilization rate is improved due to the structural optimization: the volume of the integrated design pump body is reduced by 30% - 50%, which is especially suitable for narrow underground operation spaces. The modular maintenance is convenient: it supports the local replacement of worn parts, the maintenance time is shortened by 60%, and the material cost is saved by 35%. The durability, economy, and practical service life are extended by 2 - 3 times. The intelligent monitoring reduces costs and increases efficiency, avoids the production losses caused by sudden shutdowns, and the annual maintenance cost is reduced by 2% - 5%.

[0031] The working principle and process of the present invention are as follows: When starting the slurry pump, the complex slurry containing particulate ores, coal cinders, sediment, ropes, fibers, etc. is sucked to the filter cartridge 5. The smaller particulate ores, sediment, water, and fibers are sucked into the filter cartridge 5. At this time, the fibers or ropes are cut into smaller segments by the cutter body 42 and the pressing plate 62 as the moving cutter 4 rotates; the larger particulate ores are crushed by the drill bit 12 and the lower part of the cutter body 42, enter the filter cartridge 5 along with the water flow, and are further thrown to the side wall of the filter cartridge 5 by the centrifugal force of the cutter body 42 to be crushed. The volute increases the pressure to convey the medium to the cavity to cool the motor in the pump body 1, and then the ore liquid is discharged through the water outlet 14.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "front", "rear", "lower left", "upper right", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and 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 cannot be understood as a limitation on the protection scope of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Although the present invention has been described based on a limited number of embodiments, those skilled in the art in this technical field should understand that other embodiments can be envisaged within the scope of the present invention thus described, benefiting from the above description.

Claims

1. A mining submersible slurry pump with stirring and crushing functions, characterized in that Comprising: A pump body (1) and an impeller (2), a rotating shaft (3) for driving the impeller (2) to rotate is rotatably arranged in the pump body (1); A moving blade (4), the moving blade (4) is connected to the rotating shaft (3) extending outside the pump body (1) in a fixed structure manner; A filter cartridge (5), the filter cartridge (5) is sleeved outside the moving blade (4) and connected to the pump body (1); A stationary blade (6), the stationary blade (6) is slidably connected to the filter cartridge (5); A tensioning device (7), the tensioning device (7) is connected to the stationary blade (6) so that the stationary blade (6) fits against the upper end face of the moving blade (4) to form a shearing structure with the rotating moving blade (4).

2. The mining submersible slurry pump with stirring and crushing functions according to claim 1, wherein: A plurality of strip-shaped filter holes (8) are provided at intervals along the vertical direction on the circumferential wall of the filter cartridge (5); The stationary blade (6) includes a sleeve (61) sleeved outside the rotating shaft (3), pressing plates (62) are arranged on both sides of the sleeve (61) in a fixed structure manner, and the two pressing plates (62) respectively extend outwards through two opposite strip-shaped filter holes (8).

3. The submersible slurry pump for mines with stirring and crushing functions according to claim 2, characterized in that: The tensioning device (7) includes a spring (71) with one end connected to the pressing plate (62), and the other end of the spring (71) is connected to the filter cartridge (5).

4. The submersible slurry pump for mines with stirring and crushing functions according to claim 3, characterized in that: A hanging ear (72) is arranged at the lower part of the filter cartridge (5) in a fixed structure manner, a guide rod (73) is arranged vertically between the hanging ear (72) and the pressing plate (62), and the spring (71) is sleeved outside the guide rod (73).

5. A mining submersible slurry pump with stirring and crushing functions according to claim 1, characterized in that: The moving blade (4) includes a fixed sleeve (41) fixedly connected to the rotating shaft (3), at least two blade bodies (42) are arranged on the outer peripheral wall of the fixed sleeve (41) in a fixed structure manner, and the blade bodies (42) are arranged in a spiral structure with a narrower lower part and a wider upper part.

6. The submersible slurry pump for mines with stirring and crushing functions according to claim 5, characterized in that: A limiting ring (9) is arranged at the lower part of the filter cartridge (5) in a fixed structure manner; The lower part of the blade body (42) protrudes from the lower end face of the fixed sleeve (41) and extends outside the limiting ring (9).

7. The submersible slurry pump for mines with stirring and crushing functions according to claim 6, characterized in that: The fixed sleeve (41) is connected to the rotating shaft (3) by bolts.

8. The mining submersible slurry pump with stirring and crushing functions according to claim 7, wherein: A support seat (10) is arranged at the lower part of the pump body (1) in a fixed structure manner.

9. The submersible slurry pump for mines with stirring and crushing functions according to claim 7, characterized in that: The side wall at the water inlet of the pump body (1) extends downwards; A plurality of tightening bolts (11) are arranged on the outer wall of the upper part of the filter cartridge (5) in a threaded engagement structure manner, and the tightening bolts (11) pass through the side wall of the filter cartridge (5) and abut against the side wall at the strip-shaped filter holes (8) of the pump body (1). A downward drill bit (12) is arranged at the lower end face of the fixed sleeve (41) in a fixed structure manner, and the lower part of the drill bit (12) is lower than the lower part of the blade body (42) and extends outside the limiting ring (9).

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