A device for preventing the overflow of suspended foam from a thickener
By designing a rotary defoaming device, using horn-shaped foam collection shovels and spray racks, the problems of foam accumulation and spillover in the thickener are solved, efficient foam removal is achieved, metal loss and bearing wear are avoided, and the equipment is extended life.
Patent Information
- Application Number
- CN202010271613.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-04-09
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2040-04-09
AI Technical Summary
The accumulation and spillover of suspended foam in the dense machine leads to unstable equipment operation, metal loss and bearing wear, and the existing defoaming methods are inefficient or affect subsequent production.
A device including an antifoaming device, a bracket, a track groove and a drive motor is designed. Through a rotating defoaming device, it moves along the central axis of the bushing machine, and uses a flared foam to collect components such as shovels, guide tubes, spray racks and sponge layers. , achieve efficient foam elimination and prevent foam spillage.
It effectively avoids the formation of foam layers, shortens the concentrate settlement time, extends the equipment life, improves the defoaming efficiency, and adapts to foam at different depths through the setting of the adjustment plate and the soft friction plate, ensuring the wide application of the device.
Smart Images
Figure CN111265917B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the application field of thickeners, and in particular to a device for preventing suspended foam of a thickener from overflowing. Background Art
[0002] In actual application of the thickener, due to the effect of the reagents in the slurry, a thicker concentrate foam layer is formed on the surface of the thickener tank, especially in winter, the average thickness of the concentrate foam layer is more than 300mm, and the sedimentation rate of the slurry in the thickener determines the processing capacity of the thickener. The thicker foam layer on the surface of the thickener not only occupies a large amount of clarification area in the thickener, prolongs the sedimentation time of the concentrate, and directly causes the thickener to "run muddy", that is, metal loss; and because the foam layer is too thick, the liquid level in the tank increases, and the concentrate slurry directly enters the central bearing of the thickener, causing the central bearing of the thickener to wear too quickly, affecting the normal operation and repair of the equipment, and shortening the overhaul cycle of the thickener.
[0003] At present, there are two main ways for mineral processing plants to deal with thickener foam: spraying and adding defoamers. The spraying method is to spray water above the thickener and rely on the gravity of water droplets or water flow to eliminate the foam. The advantage of this method is that the equipment is simple and has no impact on subsequent production operations. The disadvantage is that the defoaming effect is poor, especially for viscous foam. It is basically ineffective, and the water consumption is large, which reduces the concentration effect of the thickener. The defoamer method is to spray defoaming agents above the thickener to change the surface tension of the foam and make it burst by itself. The advantage of this method is that the defoaming effect is good, and the disadvantage is that the added defoamer has a greater impact on subsequent production operations, and even causes the foaming agent in subsequent production to fail.
[0004] It can be seen that in order to avoid foam overflow, timely and efficient defoaming work is very necessary. Summary of the invention
[0005] In view of the above problems, the present invention proposes a device for preventing the overflow of suspended foam in a thickener, which can avoid the accumulation and overflow of suspended foam in the thickener.
[0006] The purpose of the present invention is achieved through the following technical measures:
[0007] A device for preventing the overflow of suspended foam of a thickener comprises a defoaming device, a bracket 6, a track groove 1, and a driving motor 11; the track groove 1 is arranged at the inner edge of the upper edge of the thickener 2, the defoaming device is fixed on the bracket 6 and is horizontally placed between the thickener central axis 4 and the thickener clarification tank retaining edge through the bracket 6, one end of the bracket 6 is rotatably connected to the thickener central axis 4, and the other end is equipped with a track wheel 12, the track wheel 12 is placed in the track groove 1 and can drive the bracket 6 to move back and forth along the track groove 1, the track wheel 12 is connected to the driving motor 11, and the driving motor 11 drives the track wheel 12 to drive the bracket 6 to rotate around the thickener central axis 4; the defoaming device comprises a foam elimination box 9, a guide pipe 7, and a foam collecting shovel, the foam collecting shovel is a shovel-shaped foam collecting device surrounded by a bottom plate 5 and guide plates 10 with trumpet-shaped guide plates 10 opened outward on both sides, and the guide plates 10 are perpendicular to the bottom plate 5; the guide pipe 7 It is a hollow trumpet-shaped conduit, the foam collecting shovel is connected to the guide tube end to end and the trumpet-shaped curvature is consistent to form an overall trumpet shape; the foam elimination box 9 is open on one side and hollow at the bottom, and a spray rack 17 is provided at the bottom of the foam elimination box 9, and a nozzle 16 with a vertically upward nozzle is provided on the spray rack 17, and the nozzle 16 is connected to a water pump 18 through a water pipe.
[0008] Further: a sponge layer 14 is arranged on the top of the foam elimination box 9, and an inverted cone 13 is evenly arranged on the top of the foam elimination box 9.
[0009] Further: a conveyor belt 19 is arranged at the bottom of the guide tube 7, the conveyor belt 19 is driven by a conveying motor 15, and a soft friction sheet 20 is vertically arranged on the conveyor belt 19.
[0010] Further: the front end of the bottom plate 5 is rotatably connected to an adjusting plate 8, a bearing 21 is connected between the bottom plate 5 and the adjusting plate 8, and a cylinder 22 is provided between the adjusting plate 8 and the bottom plate 5 for controlling the angle between them.
[0011] Further: the nozzle 16 is a high-pressure atomizing nozzle.
[0012] Further: the guide plate 10 is connected with arc-shaped anti-overflow plates 3 on one side close to the thickener central axis 4 and the track groove 1 respectively. The anti-overflow plates 3 are vertical baffles that block the thickener central axis 4 and the inner side of the track groove 1 respectively. The curvature of the baffles is consistent with the curvature of the thickener central axis 4 and the track groove 1 respectively.
[0013] Beneficial technical effects
[0014] The present invention can achieve the following technical effects:
[0015] 1. The present invention effectively avoids the formation of a foam layer in the concentrate, avoids the resulting "muddy" thickener, i.e., metal loss, and shortens the sedimentation time of the concentrate.
[0016] 2. The present invention avoids the concentrate slurry directly entering the central bearing of the thickener due to the increase of the liquid level in the pool caused by the excessive thickness of the foam layer, thereby effectively avoiding the central bearing of the thickener from wearing too quickly, affecting the normal operation and repair of the equipment, and extending the life of the thickener.
[0017] 3. The nozzle of the present invention sprays upward, so the foam can contact in both the state of water spraying upward and free falling, thereby improving the contact efficiency between water and foam, and further increasing the efficiency of eliminating foam.
[0018] 4. The present invention can adjust the angle between the adjustment plate and the bottom plate through the bearing, so it can select to remove foam of different depths by controlling the angle, and has a wider range of use;
[0019] 5. The arrangement of the conveyor belt and the soft friction plate of the present invention can prevent foam congestion and enable the foam to enter the foam elimination box more quickly. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 A top view of the present invention;
[0021] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of AA;
[0022] Figure 3 Schematic diagram of the connection structure between the base plate and the adjustment plate in an embodiment of the present invention.
[0023] In the figure: 1-track groove; 2-thickener; 3-anti-overflow plate; 4-thickener center axis; 5-bottom plate; 6-bracket; 7-guide pipe; 8-adjustment plate; 9-foam elimination box; 10-guide plate; 11-drive motor; 12-track wheel; 13-cone; 14-sponge layer, 15-transmission motor; 16-nozzle; 17-spray rack; 18-water pump; 19-conveyor belt; 20-soft friction plate; 21-bearing; 22-cylinder. DETAILED DESCRIPTION
[0024] The present invention will be further described below in conjunction with the accompanying drawings and production practice applications.
[0025] Example 1: Figure 1-3As shown, a device for preventing the overflow of suspended foam of a thickener comprises a defoaming device, a bracket 6, a track groove 1, and a driving motor 11; the track groove 1 is arranged at the inner edge of the upper edge of the thickener 2, the defoaming device is fixed on the bracket 6 and is horizontally placed between the thickener central axis 4 and the thickener clarification tank retaining edge through the bracket 6, one end of the bracket 6 is rotatably connected to the thickener central axis 4, and the other end is equipped with a track wheel 12, the track wheel 12 is placed in the track groove 1 and can drive the bracket 6 to move back and forth along the track groove 1, the track wheel 12 is connected to the driving motor 11, and the driving motor 11 drives the track wheel 12 to drive the bracket 6 to rotate around the thickener central axis 4; the defoaming device comprises a foam elimination box 9, a guide pipe 7, and a foam collecting shovel, the foam collecting shovel is a shovel-shaped foam collecting device surrounded by a bottom plate 5 and guide plates 10 with trumpet-shaped guide plates 10 opened outward on both sides, and the guide plates 10 are perpendicular to the bottom plate 5; the guide pipe 7 It is a hollow trumpet-shaped conduit, the foam collecting shovel is connected to the guide tube end to end and the trumpet-shaped curvature is consistent to form an overall trumpet shape; the foam elimination box 9 is open on one side and hollow at the bottom, and a spray rack 17 is provided at the bottom of the foam elimination box 9, and a nozzle 16 with a vertically upward nozzle is provided on the spray rack 17, and the nozzle 16 is connected to a water pump 18 through a water pipe.
[0026] Example 2: Figure 1-3As shown, a device for preventing the overflow of suspended foam of a thickener comprises a defoaming device, a bracket 6, a track groove 1, and a driving motor 11; the track groove 1 is arranged at the inner edge of the upper edge of the thickener 2, the defoaming device is fixed on the bracket 6 and is horizontally placed between the thickener central axis 4 and the thickener clarification tank retaining edge through the bracket 6, one end of the bracket 6 is rotatably connected to the thickener central axis 4, and the other end is equipped with a track wheel 12, the track wheel 12 is placed in the track groove 1 and can drive the bracket 6 to move back and forth along the track groove 1, the track wheel 12 is connected to the driving motor 11, and the driving motor 11 drives the track wheel 12 to drive the bracket 6 to rotate around the thickener central axis 4; the defoaming device comprises a foam elimination box 9, a guide pipe 7, and a foam collecting shovel, the foam collecting shovel is a shovel-shaped foam collecting device surrounded by a bottom plate 5 and guide plates 10 with trumpet-shaped flares on both sides, and the guide plates 10 are perpendicular to the bottom plate 5; the guide pipe 7 It is a hollow trumpet-shaped conduit, the foam collecting shovel is connected to the guide tube end to end and the trumpet-shaped curvature is consistent to form an overall trumpet shape; the foam elimination box 9 is open on one side and hollow at the bottom, a spray rack 17 is provided at the bottom of the foam elimination box 9, and a nozzle 16 with a vertically upward nozzle is provided on the spray rack 17, and the nozzle 16 is connected to a water pump 18 through a water pipe; a sponge layer 14 is provided on the top of the foam elimination box 9, and an inverted cone 13 is also evenly provided on the top of the foam elimination box 9.
[0027] Example 3: Figure 1-3As shown, a device for preventing the overflow of suspended foam of a thickener comprises a defoaming device, a bracket 6, a track groove 1, and a driving motor 11; the track groove 1 is arranged at the inner edge of the upper edge of the thickener 2, the defoaming device is fixed on the bracket 6 and is horizontally placed between the thickener central axis 4 and the thickener clarification tank retaining edge through the bracket 6, one end of the bracket 6 is rotatably connected to the thickener central axis 4, and the other end is equipped with a track wheel 12, the track wheel 12 is placed in the track groove 1 and can drive the bracket 6 to move back and forth along the track groove 1, the track wheel 12 is connected to the driving motor 11, and the driving motor 11 drives the track wheel 12 to drive the bracket 6 to rotate around the thickener central axis 4; the defoaming device comprises a foam elimination box 9, a guide pipe 7, and a foam collecting shovel, the foam collecting shovel is a shovel-shaped foam collecting device surrounded by a bottom plate 5 and guide plates 10 with trumpet-shaped guide plates 10 opened outward on both sides, and the guide plates 10 are perpendicular to the bottom plate 5; the guide pipe 7 It is a hollow trumpet-shaped conduit, the foam collecting shovel is connected to the guide tube end to end and the trumpet-shaped curvature is consistent to form an overall trumpet shape; a conveyor belt 19 is arranged at the bottom of the guide tube 7, the conveyor belt 19 is driven by a conveying motor 15, and a soft friction plate 20 is vertically arranged on the conveyor belt 19; the foam elimination box 9 is open on one side and hollow at the bottom, a spray rack 17 is arranged at the bottom of the foam elimination box 9, and a nozzle 16 with a vertically upward nozzle is arranged on the spray rack 17, and the nozzle 16 is connected to a water pump 18 through a water pipe; a sponge layer 14 is arranged on the top of the foam elimination box 9, and an inverted cone 13 is evenly arranged on the top of the foam elimination box 9.
[0028] Example 4: Figure 1-3As shown, a device for preventing the overflow of suspended foam of a thickener comprises a defoaming device, a bracket 6, a track groove 1, and a driving motor 11; the track groove 1 is arranged at the inner edge of the upper edge of the thickener 2, the defoaming device is fixed on the bracket 6 and is horizontally placed between the thickener central axis 4 and the thickener clarification tank retaining edge through the bracket 6, one end of the bracket 6 is rotatably connected to the thickener central axis 4, and the other end is equipped with a track wheel 12, the track wheel 12 is placed in the track groove 1 and can drive the bracket 6 to move back and forth along the track groove 1, the track wheel 12 is connected to the driving motor 11, and the driving motor 11 drives the track wheel 12 to drive the bracket 6 to rotate around the thickener central axis 4; the defoaming device comprises a foam elimination box 9, a guide pipe 7, and a foam collecting shovel, the foam collecting shovel is a shovel-shaped foam collecting device surrounded by a bottom plate 5 and guide plates 10 with trumpet-shaped flares on both sides, and the guide plates 10 are perpendicular to the bottom plate 5; the bottom plate 5 The front end is rotatably connected with an adjustment plate 8, a bearing 21 is connected between the bottom plate 5 and the adjustment plate 8, and a cylinder 22 is provided between the adjustment plate 8 and the bottom plate 5 for controlling the angle between them; the guide tube 7 is a hollow trumpet-shaped conduit, the foam collecting shovel is connected to the guide tube end to end and the trumpet-shaped curvature is consistent to form an integral trumpet shape; a conveyor belt 19 is provided at the bottom of the guide tube 7, the conveyor belt 19 is driven by a conveying motor 15, and a soft friction plate 20 is vertically provided on the conveyor belt 19; the foam elimination box 9 has an opening on one side and a hollow bottom, and a spray rack 17 is provided at the bottom of the foam elimination box 9, and a nozzle 16 with a nozzle vertically upward is provided on the spray rack 17, and the nozzle 16 is a high-pressure atomizing nozzle; the nozzle 16 is connected to a water pump 18 through a water pipe; a sponge layer 14 is provided on the top of the foam elimination box 9, and an inverted cone 13 is also evenly provided on the top of the foam elimination box 9.
[0029] Embodiment 5: As described in any one of Embodiments 1-4, the guide plate 10 is connected with an arc-shaped anti-overflow plate 3 on one side close to the thickener central axis 4 and on one side close to the track groove 1, respectively. The anti-overflow plate 3 is a vertical baffle plate that blocks the thickener central axis 4 and the inner side of the track groove 1, respectively. The curvature of the baffle plate is consistent with the curvature of the thickener central axis 4 and the track groove 1, respectively; the rest of the parts are the same.
[0030] Working process: driven by the driving motor, the defoaming device on the bracket rotates around the central axis of the thickener along the track groove, and the foam generated in the thickener is collected by the foam collecting shovel on the defoaming device and enters the guide pipe. As a preferred solution: the front end of the bottom plate can be connected to the adjustment plate by rotation, and the adjustment plate can be raised or lowered under the action of the bearing and the cylinder, and the angle can be adjusted to select the foam of different depths for removal, which has a wider range of use; the foam is transported to the foam elimination box under the action of the guide pipe conveyor belt. In the foam elimination box, due to the presence of uniformly arranged nozzles, the nozzles can spray water, so it can achieve the effect of eliminating foam. At the same time, since the nozzles are upward For spraying, a high-pressure atomizing nozzle can be selected, which has the advantages of low energy consumption and less water consumption. The foam can contact the water in both the upward spraying and free falling states, which improves the contact efficiency between water and foam, and thus increases the efficiency of eliminating foam. At the same time, the eliminated foam falls into the thickener again due to the hollow bottom of the foam elimination box. Since the device can quickly eliminate foam, it can prevent suspended foam from overflowing; the sponge layer can fully absorb moisture, and after absorbing to a certain extent, the moisture will fall. At the same time, the inverted cone can gather moisture to form water droplets and then fall. During the falling process, it contacts the foam and can produce a defoaming effect. As a preferred solution: the guide plate is respectively connected with an arc-shaped overflow prevention plate on the side close to the central axis of the thickener and the side close to the track groove to prevent foam from overflowing or entering the central axis of the thickener.
[0031] Various changes and equivalent substitutions may be made to the invention without departing from the scope of the invention. Therefore, the patent of the present invention is not limited to the specific implementation process disclosed, but should include all implementation schemes that fall within the scope of the claims of the present invention.
Claims
1. A device for preventing the overflow of suspended foam from a thickener, characterized in that: The invention comprises a defoaming device, a bracket (6), a track groove (1), and a driving motor (11); the track groove (1) is arranged at the inner edge of the upper edge of the thickener (2); the defoaming device is fixed on the bracket (6) and is horizontally placed between the thickener central axis (4) and the thickener clarification tank retaining edge through the bracket (6); one end of the bracket (6) is rotatably connected to the thickener central axis (4); the other end is provided with a track wheel (12); the track wheel (12) is arranged in the track groove (1) and can drive the bracket (6) to move back and forth along the track groove (1); the track wheel (12) is connected to the driving motor (11); the driving motor (11) drives the track wheel (12) to drive the bracket (6) to rotate around the thickener central axis (4). The defoaming device comprises a foam elimination box (9), a guide tube (7), and a foam collecting shovel. The foam collecting shovel is a shovel-shaped foam collecting device formed by a bottom plate (5) and guide plates (10) with trumpet-shaped openings on both sides. The guide plates (10) are perpendicular to the bottom plate (5). The guide tube (7) is a hollow trumpet-shaped conduit. The foam collecting shovel is connected end to end with the guide tube and the trumpet-shaped curvature is consistent to form an integral trumpet shape. The foam elimination box (9) is open on one side and hollow at the bottom. A spray rack (17) is provided at the bottom of the foam elimination box (9). A nozzle (16) with a nozzle opening vertically upward is provided on the spray rack (17). The nozzle (16) is connected to a water pump (18) through a water pipe. A sponge layer (14) is arranged on the top of the foam elimination box (9), and inverted cones (13) are also evenly arranged on the top of the foam elimination box (9); The front end of the bottom plate (5) is rotatably connected to an adjustment plate (8), a bearing (21) is connected between the bottom plate (5) and the adjustment plate (8), and a cylinder (22) is provided between the adjustment plate (8) and the bottom plate (5) for controlling the angle between them; The guide plate (10) is connected to arc-shaped anti-overflow plates (3) on one side close to the thickener central axis (4) and on one side close to the track groove (1), respectively. The anti-overflow plates (3) are vertical baffles that block the inside of the thickener central axis (4) and the track groove (1), respectively. The baffle curvature is consistent with the curvature of the thickener central axis (4) and the track groove (1).
2. The device for preventing the overflow of suspended foam from a thickener according to claim 1, characterized in that: A conveyor belt (19) is arranged at the bottom of the guide tube (7), the conveyor belt (19) is driven by a conveying motor (15), and a soft friction plate (20) is vertically arranged on the conveyor belt (19).
3. The device for preventing the overflow of suspended foam from a thickener according to claim 1, characterized in that: The nozzle (16) is a high-pressure atomizing nozzle.