Cyanide leaching stirrer with cavity streamline stirring blades

Abstract

The cyanidation leaching stirrer comprises a hollow stirring shaft, a connecting sleeve, the cavity streamline stirring blades and a one-way valve, and is technically characterized in that a flexible central pipe is arranged in the middle of the hollow stirring shaft; the one-way valve comprises a transition sleeve connected with the lower end of the hollow stirring shaft, a hollowed-out valve shell connected with the lower end of the transition sleeve, a valve element arranged in the hollowed-out valve shell and a filter screen wrapping the hollowed-out valve shell, an annular positioning piece is fixed to the upper end of the inner circumferential face of the transition sleeve, and the lower end of the flexible center pipe is fixedly connected with the annular positioning piece through a flange; a protective cover is arranged at the upper end of the hollow stirring shaft, the upper end of the flexible center pipe penetrates through the protective cover to be connected with an external gas injection pipeline, and a solid driving shaft connected with the power input end is fixed to the bottom face of the hollow valve shell. The stirrer solves the problem that leakage points are easy to generate after the stirring shaft of the stirrer is used for a long time, meanwhile, the mounting angles of the stirring blades can be flexibly adjusted according to requirements, and the service life of the stirrer is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of stirring devices, in particular to a cyanide leaching stirrer with a cavity streamlined stirring blade. Background Art

[0002] The stirring device is an important equipment in the cyanidation gold extraction process. It is generally composed of a stirring shaft and stirring blades arranged on the stirring shaft. In the production process, it is necessary not only to consider the stirring efficiency, but also to have high working stability.

[0003] CN 208302570 U discloses a cavity streamlined stirring blade and a cyanide leaching stirrer, wherein the cavity streamlined stirring blade comprises an upper blade plate, a lower blade plate and a supporting rib plate, wherein the lower blade plate is arranged correspondingly with the upper blade plate at intervals; a plurality of supporting rib plates are arranged at intervals between the upper blade plate and the lower blade plate; an outer plate is arranged circumferentially of the upper blade plate and the lower blade plate, and a connecting plate is arranged at the fixed end of the upper blade plate and the lower blade plate. The cyanide leaching stirrer comprises a stirring shaft, a cavity streamlined stirring blade, a check valve and a hub, wherein the stirring blade is fixedly arranged on the stirring shaft through the hub, and the stirring shaft is a hollow structure. The patent is functionally designed for the cyanide leaching process, and structurally designed for energy efficiency, and is convenient for installation and maintenance. However, the following problems still exist during its use: 1. Since the stirring shaft is also used as a channel for transmitting gas, its sealing performance is required to be high, but during long-term operation, the connection of the stirring shaft is easily corroded by external liquid to produce leakage points; 2. It is not convenient to adjust the installation angle of the stirring blade. Utility Model Content

[0004] The utility model aims to provide a cyanide leaching agitator with a cavity streamlined agitator blade which is reasonable in structure and reliable in use, so as to solve the problem that the agitator shaft is prone to leakage after long-term use. At the same time, the installation angle of the agitator blade can be flexibly adjusted according to demand, thereby extending the service life of the agitator.

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

[0006] A cyanide leaching agitator with a hollow streamlined agitating blade comprises a hollow agitating shaft, a connecting sleeve arranged outside the hollow agitating shaft, a hollow streamlined agitating blade connected to the outer wall of the connecting sleeve, and a one-way valve arranged at the lower end of the hollow agitating shaft. The technical key points are: a flexible central tube is arranged in the middle of the hollow agitating shaft, the one-way valve comprises a transition sleeve connected to the lower end of the hollow agitating shaft, a hollow valve shell connected to the lower end of the transition sleeve, a valve core arranged in the hollow valve shell, and a filter screen wrapped around the outside of the hollow valve shell; an annular positioning piece is fixed to the upper end of the inner circumference of the transition sleeve, the lower end of the flexible central tube is connected and fixed by a flange and the annular positioning piece, a protective cover is arranged at the upper end of the hollow agitating shaft, the upper end of the flexible central tube passes through the protective cover and is connected to an external gas injection pipeline, a solid drive shaft connected to a power input end is fixed to the bottom surface of the hollow valve shell, and the solid drive shaft coincides with the center line of the hollow agitating shaft.

[0007] The above-mentioned cyanide leaching agitator with cavity streamlined stirring blades, the outer peripheral surface of the connecting sleeve is square and radial positioning holes are provided on all four sides, the number of the cavity streamlined stirring blades is equal to the number of the radial positioning holes, the end of the cavity streamlined stirring blade is provided with a truncated cone that fits with the outer wall of the connecting sleeve, the center of the truncated cone is provided with a radial connecting rod that cooperates with the radial positioning hole, the upper and lower end surfaces of the connecting sleeve are provided with axial positioning holes that communicate with the radial connecting holes, the positioning pin passes through the axial positioning hole and presses the radial connecting rod, and a connecting piece is provided between the truncated cone and the outer wall of the connecting sleeve.

[0008] The above-mentioned cyanide leaching agitator with a hollow streamlined agitator blade has a plurality of reinforcing ribs arranged in the hollow streamlined agitator blade.

[0009] The above-mentioned cyanide leaching agitator with hollow streamlined stirring blades has two longitudinal guide pillars symmetrically arranged on the inner bottom surface of the hollow valve shell, the valve core is composed of an upper hemisphere and a lower cylinder, and the outer wall of the lower cylinder is provided with a longitudinal guide groove that cooperates with the two longitudinal guide pillars.

[0010] The above-mentioned cyanide leaching agitator with cavity streamlined agitating blades has a lower portion of the transition sleeve in the shape of a cone that is narrow at the top and wide at the bottom, and a wear-resistant ring that cooperates with the valve core is provided on its inner surface.

[0011] The beneficial effects of the utility model are:

[0012] 1. In order to solve the problem that the stirring shaft of the agitator is prone to leakage after long-term use, the stirring shaft is not used as a passage for conveying gas. A flexible central tube is set in the hollow stirring shaft, the lower end is connected to the one-way valve, and the upper end is connected to the external gas injection pipeline. On the one hand, the flexible central tube is protected from erosion inside the hollow stirring shaft, extending the service life of the agitator. On the other hand, the hollow stirring shaft is driven by a solid drive shaft, which does not affect the upper gas injection and air delivery.

[0013] 2. The installation angle of the stirring blade can be flexibly adjusted according to needs. When adjustment is needed, release the limit on the radial connecting rod, rotate the stirring blade, and then position the radial connecting rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 yes Figure 1 Enlarged view of part A in the middle;

[0016] Figure 3 yes Figure 1 Enlarged view of part B in the middle.

[0017] In the figure: 1. hollow stirring shaft, 2. flexible central tube, 3. connecting sleeve, 4. cavity streamline stirring blade, 5. frustum, 6. radial connecting rod, 7. solid driving shaft, 8. annular positioning piece, 9. transition sleeve, 10. valve core, 11. hollow valve shell, 12. longitudinal guide column, 13. wear-resistant ring, 14. protective cover. DETAILED DESCRIPTION

[0018] The utility model is described in detail according to the accompanying drawings of the specification.

[0019] like Figure 1 to Figure 3 As shown, the cyanide leaching agitator with a hollow streamlined agitator blade comprises a hollow agitator shaft 1, a connecting sleeve 3 disposed outside the hollow agitator shaft 1, a hollow streamlined agitator blade 4 connected to the outer wall of the connecting sleeve 3, and a one-way valve disposed at the lower end of the hollow agitator shaft 1. The hollow streamlined agitator blade 4 is provided with a plurality of reinforcing ribs.

[0020] Among them, a flexible central tube 2 is provided in the middle of the hollow stirring shaft 1. The one-way valve includes a transition sleeve 9 connected to the lower end of the hollow stirring shaft 1, a hollow valve shell 11 connected to the lower end of the transition sleeve 9, a valve core 10 arranged in the hollow valve shell 11, and a filter screen wrapped around the outside of the hollow valve shell 11. An annular positioning piece 8 is fixed to the upper end of the inner circumference of the transition sleeve 9. The lower end of the flexible central tube 2 is connected and fixed by a flange and the annular positioning piece 8. A protective cover 14 is provided at the upper end of the hollow stirring shaft 1. The upper end of the flexible central tube 2 passes through the protective cover 14 and is connected to the external gas injection pipeline. A solid drive shaft 7 connected to the power input end is fixed to the bottom surface of the hollow valve shell 11, and the solid drive shaft 7 coincides with the center line of the hollow stirring 1.

[0021] In this embodiment, the outer circumference of the connecting sleeve 3 is square and radial positioning holes are provided on all four sides. The number of the cavity streamlined stirring blades 4 is equal to the number of radial positioning holes. The end of the cavity streamlined stirring blade 4 is provided with a truncated cone 5 that fits the outer wall of the connecting sleeve 3. The center of the truncated cone 5 is provided with a radial connecting rod that matches the radial positioning hole. The upper and lower end surfaces of the connecting sleeve 3 are provided with axial positioning holes that communicate with the radial connecting holes. The positioning pin passes through the axial positioning hole and presses the radial connecting rod 6. A connecting piece is provided between the truncated cone 5 and the outer wall of the connecting sleeve 3.

[0022] The inner bottom surface of the hollow valve housing 11 is symmetrically provided with two longitudinal guide pillars 12, and the valve core 10 is composed of an upper hemisphere and a lower cylinder, and the outer wall of the lower cylinder is provided with a longitudinal guide groove that cooperates with the two longitudinal guide pillars 12. The lower part of the transition sleeve 9 is a cone-shaped body that is narrow at the top and wide at the bottom, and a wear-resistant ring 13 that cooperates with the valve core 10 is provided on its inner surface.

[0023] During operation, during normal blowing, the valve core 10 is separated from the wear ring 13 of the transition sleeve. When a siphon occurs, the valve core 10 rises to block the lower port of the transition sleeve 9 and is closely connected to the wear ring 13 to prevent the slurry from flowing back into the flexible central pipe 2. During operation, the inclination angle of the cavity streamlined stirring blade 4 is pre-adjusted.

[0024] The above embodiments of the present invention are described in detail, but the above contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A cyanide leaching agitator with a hollow streamlined stirring blade, comprising a hollow stirring shaft, a connecting sleeve arranged outside the hollow stirring shaft, a hollow streamlined stirring blade connected to the outer wall of the connecting sleeve, and a one-way valve arranged at the lower end of the hollow stirring shaft, characterized in that: A flexible center tube is provided in the middle of the hollow stirring shaft, and the one-way valve includes a transition sleeve connected to the lower end of the hollow stirring shaft, a hollow valve shell connected to the lower end of the transition sleeve, a valve core arranged in the hollow valve shell, and a filter screen wrapped around the outside of the hollow valve shell. An annular positioning piece is fixed to the upper end of the inner circumference of the transition sleeve, and the lower end of the flexible center tube is connected and fixed by a flange and an annular positioning piece. A protective cover is provided at the upper end of the hollow stirring shaft, and the upper end of the flexible center tube is connected to the external gas injection pipeline through the protective cover. A solid drive shaft connected to the power input end is fixed to the bottom surface of the hollow valve shell, and the solid drive shaft coincides with the center line of the hollow stirring shaft.

2. The cyanide leaching agitator with a cavity streamlined agitator blade according to claim 1, characterized in that: The outer circumferential surface of the connecting sleeve is square and radial positioning holes are provided on all four sides. The number of the cavity streamlined stirring blades is equal to the number of the radial positioning holes. The end of the cavity streamlined stirring blade is provided with a frustum that fits the outer wall of the connecting sleeve. The center of the frustum is provided with a radial connecting rod that cooperates with the radial positioning hole. The upper and lower end surfaces of the connecting sleeve are provided with axial positioning holes that communicate with the radial connecting holes. The positioning pin passes through the axial positioning hole and presses the radial connecting rod. A connecting piece is provided between the frustum and the outer wall of the connecting sleeve.

3. The cyanide leaching agitator with a cavity streamlined agitator blade according to claim 1, characterized in that: The hollow streamlined stirring blade is provided with a plurality of reinforcing ribs.

4. The cyanide leaching agitator with a cavity streamlined agitator blade according to claim 1, characterized in that: The inner bottom surface of the hollow valve shell is symmetrically provided with two longitudinal guide pillars, the valve core is composed of an upper hemisphere and a lower cylinder, and the outer wall of the lower cylinder is provided with longitudinal guide grooves that cooperate with the two longitudinal guide pillars.

5. The cyanide leaching agitator with a cavity streamlined agitator blade according to claim 1, characterized in that: The lower part of the transition sleeve is in the shape of a cone which is narrow at the top and wide at the bottom, and a wear-resistant ring which cooperates with the valve core is provided on the inner surface of the transition sleeve.

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