A mine submersible slurry pump with stirring and crushing functions

Abstract

The utility model provides a mine submersible slurry pump with stirring and crushing functions, comprising a pump body and an impeller, a rotating shaft is arranged in the pump body to drive the rotation of the impeller, a filter cartridge is arranged at the water inlet of the pump body through a detachable structure, the rotating shaft extends into the filter cartridge and is provided with a moving cutter through a fixed structure, the filter cartridge is provided with a static cutter in a sliding structure, and a tensioning device is further arranged and connected to the static cutter to make the static cutter adhere to the upper end surface of the moving cutter in rotation to form a shearing structure. The mine submersible slurry pump integrates the functions of stirring, crushing, shearing and automatic tensioning of the moving and static cutters at the bottom of the pump body, simplifies the process flow, reduces the equipment floor area, optimizes the synergistic effect of the stirring, crushing and shearing components, improves the processing capacity of complex slurry containing large-particle ores, coal cinder, silt, ropes and fibers, and reduces the operation and maintenance cost.

Description

Technical fields: This application relates to the field of submersible slurry pump technology, and in particular to a mining submersible slurry pump with stirring and crushing functions. Background technology: Mining vertical submersible slurry pumps are key equipment in mining, tailings treatment and other fields. They are mainly used for hydraulic conveying of slurry containing high concentrations of solid particles. Their working environment is usually characterized by strong corrosion, high abrasion and complex media composition, which places extremely high demands on the reliability, anti-clogging ability and processing efficiency of the equipment. Currently, traditional mining slurry pumps mainly adopt the following two design methods: 1. Single-function pump body, which only has the function of conveying and needs to work in conjunction with crushers and mixing tanks to handle large particles or easily deposited slurries; 2. Split-function design, where 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, making the split-function structure complex. For example, stirring blades are added at the pump inlet to prevent particle deposition through rotation; a crushing disc is connected outside the pump body to pre-crush large particles.

[0003] Traditional slurry pumps are not adaptable enough and have poor pumping effect on large particles or easily deposited slurries; external stirring devices are difficult to handle fibrous impurities, resulting in frequent pump shutdowns for cleaning. Summary of the Invention: To solve the above-mentioned technical problems, this invention provides a submersible slurry pump for mining with stirring and crushing functions. The technical problem solved is that fibrous impurities easily become entangled on the impeller, leading to frequent pump shutdowns for cleaning. The technical solution adopted by this invention to solve the above-mentioned technical problems is as follows: A submersible slurry pump for mining with stirring and crushing functions, characterized in that it comprises: The pump body and impeller are equipped with a rotating shaft inside the pump body to drive the impeller to rotate. The moving blade is connected to the rotating shaft extending to the outside of the pump body in a fixed structure. The filter cartridge is fitted outside the moving blade and connected to the pump body; The stationary blade is slidably connected to the filter cartridge. The tensioning device is connected to the stationary blade so that the stationary blade fits against the upper surface of the moving blade and forms a shearing structure with the rotating moving blade.

[0005] Furthermore, the filter cartridge has several strip-shaped filter holes spaced vertically along its circumferential wall; The stationary blade includes a sleeve fitted outside the rotating shaft. Pressure plates are fixed on both sides of the sleeve, and the two pressure plates extend outward through two opposite strip-shaped filter holes.

[0006] Furthermore, the tensioning device includes a spring with one end connected to the pressure plate and the other end connected to the filter cartridge.

[0007] Furthermore, the lower part of the filter cartridge is provided with a hanging lug by a fixed structure, and a guide rod is provided vertically between the hanging lug and the pressure plate, with a spring sleeved on the outside of the guide rod.

[0008] Furthermore, the moving tool includes a fixed sleeve that is fixedly connected to the rotating shaft. The outer peripheral wall of the fixed sleeve is provided with at least two tool bodies through a fixed structure. The tool bodies are arranged in a spiral structure that is narrow at the bottom and wide at the top.

[0009] Furthermore, a limit ring is provided at the lower part of the filter cartridge through a fixed structure; The lower part of the blade protrudes from the lower end face of the fixed sleeve and extends to the outside of the limiting ring.

[0010] Furthermore, the retaining sleeve is connected to the rotating shaft by bolts.

[0011] Furthermore, a support base is provided at the bottom of the pump body in a fixed structure.

[0012] Furthermore, the sidewall at the pump inlet extends downwards; The upper outer wall of the filter cartridge is equipped with several tightening bolts through a threaded engagement structure. The tightening bolts pass through the side wall of the filter cartridge and abut against the side wall of the strip-shaped filter holes in the pump body.

[0013] The beneficial effects of this invention are: the mining submersible slurry pump integrates the functions of stirring, crushing, shearing, and automatic tensioning of moving and stationary blades at the bottom of the pump body, which simplifies the process flow, reduces the equipment footprint, optimizes the synergistic effect of the stirring, crushing, and shearing components, improves the processing capacity of complex slurries containing large particles, ore, slag, silt, rope, and fiber, and reduces operation and maintenance costs. Attached image description: Figure 1 This is a schematic cross-sectional view of the present invention.

[0015] Figure 2 This is an exploded schematic diagram of the lower structure of the pump body in Embodiment 1 of the present invention.

[0016] Figure 3 This is an exploded schematic diagram of the lower structure of the pump body in Embodiment 3 of the present invention.

[0017] In the picture: 1. Pump body, 2. Impeller, 3. Shaft, 4. Moving blade, 41. Fixed sleeve, 42. Blade body, 5. Filter cartridge, 6. Stationary blade, 61. Sleeve, 62. Pressure plate, 7. Tensioning device, 71. Spring, 72. Lug, 73. Guide rod, 8. Strip filter hole, 9. Limiting ring, 10. Support base, 11. Tightening bolt, 12. Drill bit, 13. Housing, 14. Outlet. Detailed implementation method: To make the objectives, technical solutions, and advantages of this invention clearer, the invention will now be described in further detail with reference to the accompanying drawings and the following embodiments, so that the public can better understand the implementation method of this invention. The specific implementation scheme of this invention is as follows: Example 1: A submersible slurry pump for mining with stirring and crushing functions includes a pump body 1 and an impeller 2. A rotating shaft 3 is rotatably installed inside the pump body 1 to drive the impeller 2 to rotate. A filter cartridge 5 is installed at the inlet of the pump body 1 through a detachable structure. The rotating shaft 3 extends into the filter cartridge 5 and a moving blade 4 is installed through a fixed structure. A stationary blade 6 is installed in the filter cartridge 5 through a sliding structure. A tensioning device 7 is also provided, which is connected to the stationary blade 6 so that the stationary blade 6 fits against the upper end face of the moving blade 4 and forms a shearing structure with the rotating moving blade 4. This submersible slurry pump for mining integrates stirring, crushing, shearing, and automatic tensioning functions of moving and stationary blades at the bottom of the pump body 1, simplifying the process flow, reducing the equipment footprint, optimizing the synergistic effect of stirring, crushing, and shearing components, improving the processing capacity of complex slurries containing large particles of ore, slag, silt, rope, and fiber, and reducing operation and maintenance costs.

[0019] It should be noted that the filter cylinder 5 has several strip-shaped filter holes 8 spaced vertically along its circumferential wall. This serves two purposes: firstly, it can block larger objects and facilitate water intake; secondly, it facilitates the installation of the stationary blade 6 and provides a limiting function for the stationary blade 6. The stationary blade 6 includes a sleeve 61 sleeved outside the rotating shaft 3. Pressure plates 62 are fixedly arranged on both sides of the sleeve 61. The two pressure plates 62 extend outward through two opposite strip-shaped filter holes 8.

[0020] Specifically, the tensioning device 7 includes a spring 71 with one end connected to the pressure plate 62 and the other end connected to the filter cartridge 5. The spring 71 provides a tension to the pressure plate 62, causing the lower end face of the pressure plate 62 to abut against the upper end face of the moving blade 4. The pressure plate 62 and the moving blade 4 form a ring-shaped shearing structure to shear fibrous impurities. The spring 71 is moderately tightened so that the two sides are always in close contact, avoiding poor shearing effect after wear and improving the shearing function.

[0021] It should be noted that the lower part of the filter cartridge 5 is provided with a hanging lug 72 for connecting the spring 71 through a fixed structure. A guide rod 73 is arranged vertically between the hanging lug 72 and the pressure plate 62. The spring 71 is sleeved on the outside of the guide rod 73. The guide rod 73 is fixedly connected to one of the hanging lug 72 or the pressure plate 62, and the guide rod 73 is slidably connected to the other of the hanging lug 72 or the pressure plate 62. This can ensure that the pressure plate 62 moves vertically and also limit the movement of the spring 71.

[0022] Specifically, the moving blade 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 set in an inverted frustum structure with a 4° taper. The outer peripheral wall of the fixed sleeve 41 is sleeved on the outside of the rotating shaft (3) through a conical shank insertion structure. This fixed structure has high load-bearing capacity and rigidity, high precision repeatability, and extremely high concentricity, ensuring rotation efficiency. It is easy to install and disassemble, and convenient to maintain and replace the moving blade. At the same time, it supports reverse rotation of the blade for shearing. The conical shank fixed sleeve is provided with at least two blades 42. In this embodiment, there are three. The blades 42 are attached to the pressure plate 62. The blades 42 are set in a spiral structure that is narrow at the bottom and wide at the top. The blades 42 are set in a 10° taper, forming a structure similar to a drill bit, which can crush larger particles of mineral material. Due to the design of the spiral structure that is narrow at the bottom and wide 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.

[0023] The pump body 1 has a support base 10 fixed at the bottom to provide operating space for the moving blade 4.

[0024] The side wall at the inlet of the pump body 1 extends downward. To facilitate installation, the upper outer wall of the filter cylinder 5 is provided with several tightening bolts 11 through a threaded engagement structure. The tightening bolts 11 pass through the side wall of the filter cylinder 5 and abut against the side wall of the strip-shaped filter hole 8 of the pump body 1.

[0025] In Example 2, based on the above examples, in this example, a limiting ring 9 is provided at the lower part of the filter cylinder 5 through a fixed structure. The limiting ring 9 can block large ore particles and prevent them from directly entering the filter cylinder through the lower inlet. As the diameter of the cutter body 42 rotates, the large ore particles get stuck between the filter cylinder 5 and the cutter body 42, causing the cutter body 42 to be unable to rotate, thus reducing downtime.

[0026] Furthermore, in order to crush large ore particles and other materials, the lower part of the cutter body 42 protrudes from the lower end face of the fixed sleeve 41 and extends to the outside of the limiting ring 9, crushing the large ore particles accumulated at the limiting ring 9 into smaller particles, thereby improving throughput and extraction efficiency.

[0027] In Example 3, based on the above examples, in this example, the lower end face of the bolt is provided with a downward-facing drill bit 12 through a fixed structure. The lower part of the drill bit 12 is lower than the lower part of the cutter body 42 and extends to the outside of the limiting ring 9, thereby increasing the crushing depth of large particles, preventing large particles from clogging the inlet of the limiting ring 9, and improving crushing efficiency.

[0028] In another embodiment, a housing 13 is fixedly installed outside the pump body 1, covering the pump body 1. A cavity is formed between the housing 13 and the pump body 1. This cavity is connected to the outlet of the volute casing, and an outlet is provided on the upper part of the housing 13 to cool the motor inside the pump body 1 with water, thereby improving the motor's service life. This series of pumps also features a unique air-cooling structure. When insufficient water flow causes the pump to run dry, its unique impeller air-cooling structure can dissipate heat, preventing the motor from overheating. This ensures that the pump can operate without water and automatically drains water when it is available, extending the overall service life of the machine.

[0029] By integrating the stirring shaft, crushing device, and conveying unit into a single design, the process chain is shortened, reducing energy loss caused by the coordinated operation of multiple devices, with measured energy consumption reduction of 15%–20%. Anti-clogging capability is significantly enhanced, avoiding clogging problems caused by solid deposits or large particles in traditional pumps, reducing the failure rate by over 40%. Optimized structure improves space utilization: the integrated design reduces pump volume by 30%–50%, making it particularly suitable for confined downhole working spaces. Modular maintenance is convenient: it supports partial replacement of worn parts, reducing maintenance time by 60% and saving 35% on material costs. Durability, economy, and practicality are extended by 2–3 times. Intelligent monitoring reduces costs and increases efficiency, avoiding production losses due to sudden downtime, and reducing annual maintenance costs by 2%–5%.

[0030] The working principle and process of this invention are as follows: When the slurry pump is started, the complex slurry containing granular ore, slag, silt, rope, fiber, etc. is drawn into the filter cylinder 5. Smaller granular ore, silt, water, and fiber are drawn into the filter cylinder 5. At this time, the fiber or rope is cut into smaller segments by the blade 42 and the pressure plate 62 as the moving blade 4 rotates. Larger ore particles are crushed by the drill bit 12 and the lower part of the blade 42. They enter the filter cylinder 5 with the water flow and are further crushed by the centrifugal force of the blade 42 against the side wall of the filter cylinder 5. The volute pressurizes and transports the medium to the cavity, cools the motor in the pump body 1, and then discharges the slurry through the outlet 14.

[0031] In the description of this invention, it should be understood that the terms "center," "upper," "lower," "left," "right," "front," "rear," "lower left," "upper right," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Although the invention has been described according to a limited number of embodiments, those skilled in the art should understand from the above description that other embodiments are conceived within the scope of the invention described herein.

Claims

1. A submersible slurry pump for mining with stirring and crushing functions, characterized in that, include: Pump body (1), impeller (2), and a rotating shaft (3) for driving the impeller (2) to rotate is rotatably installed inside the pump body (1). The moving blade (4) is connected to the rotating shaft (3) extending to the outside of the pump body (1) in a fixed structure. The filter cartridge (5) is fitted outside the moving knife (4) and connected to the pump body (1); The stationary blade (6) is slidably connected to the filter cartridge (5); Tensioning device (7) is connected to stationary blade (6) so that stationary blade (6) fits against the upper end face of moving blade (4) and forms a shearing structure with the rotating moving blade (4).

2. A submersible slurry pump for mining with stirring and crushing function according to claim 1, characterized in that: The filter cartridge (5) has several strip-shaped filter holes (8) spaced vertically on its circumferential wall; The stationary blade (6) includes a sleeve (61) fitted outside the rotating shaft (3). Pressure plates (62) are fixed on both sides of the sleeve (61). The two pressure plates (62) extend outward through two opposite strip-shaped filter holes (8).

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

4. A submersible slurry pump for mining with stirring and crushing function according to claim 3, characterized in that: The filter cartridge (5) has a hanging ear (72) at the bottom through a fixed structure. A guide rod (73) is arranged vertically between the hanging ear (72) and the pressure plate (62). A spring (71) is sleeved on the outside of the guide rod (73).

5. A submersible slurry pump for mining with stirring and crushing function according to claim 1, characterized in that: The moving blade (4) includes a fixed sleeve (41) that is fixedly connected to the rotating shaft (3). The outer peripheral wall of the fixed sleeve (41) is provided with at least two blades (42) through a fixed structure. The blades (42) are arranged in a spiral structure that is narrow at the bottom and wide at the top.

6. A submersible slurry pump for mining with stirring and crushing function according to claim 5, characterized in that: The filter cartridge (5) has a limit ring (9) at the bottom through a fixed structure. The lower part of the blade (42) protrudes from the lower end face of the fixed sleeve (41) and extends to the outside of the limiting ring (9).

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

8. A submersible slurry pump for mining with stirring and crushing function according to claim 7, characterized in that: The pump body (1) has a support base (10) at the bottom in a fixed structure.

9. A submersible slurry pump for mining with stirring and crushing function according to claim 7, characterized in that: The side wall of the pump body (1) at the water inlet extends downward; The upper outer wall of the filter cartridge (5) is provided with several tightening bolts (11) through a threaded meshing structure. The tightening bolts (11) pass through the side wall of the filter cartridge (5) and abut against the side wall of the strip-shaped filter hole (8) of the pump body (1).

10. A submersible slurry pump for mining with stirring and crushing function according to claim 7, characterized in that: The lower end face of the fixed sleeve (41) is provided with a downward drill bit (12) by means of a fixed structure. The lower part of the drill bit (12) is lower than the lower part of the cutter body (42) and extends to the outside of the limiting ring (9).

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