Ore pulp conveying mechanism
By designing the conveying pipe and agitator below the thickener liquid level and combining it with the use of dilution components, the problems of insufficient mixing and sedimentation in the slurry conveying mechanism are solved, and sufficient mixing of the slurry and supernatant is achieved without sedimentation.
Patent Information
- Application Number
- CN202490000038.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-09-30
AI Technical Summary
It is difficult for existing slurry conveying mechanisms to simultaneously avoid sedimentation and ensure sufficient liquid mixing in a mixing box.
A slurry conveying mechanism was designed, including a mixing box, a conveying pipe, an agitator and a dilution component. The height of the conveying pipe was lower than the liquid level of the thickener. The agitator was used for mixing, and the dilution component was used to increase the supernatant input to ensure that the slurry and supernatant were fully mixed in the mixing box.
The residence time of the liquid in the mixing box is prolonged, ensuring that the slurry and the supernatant are fully mixed, avoiding sedimentation and improving mixing efficiency.
Smart Images
Figure CN223351091U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of thickeners, and in particular to a slurry conveying mechanism. Background Art
[0002] During thickener operation, the slurry needs to be transported to the thickener's feed well via a slurry transport pipeline. During this process, the slurry is first introduced into a mixing tank and mixed with the thickener's supernatant before being transported to the feed well via a pipeline.
[0003] There are roughly two ways to set up the pipeline. One of the settings is: one end of the pipeline is flush with the bottom of the mixing box, and the other end of the pipeline extends to the upper position of the feed well. Although this method can ensure that there is no sedimentation at the bottom of the mixing box, due to the height difference between the liquid in the mixing box and the liquid in the feed well, the residence time of the liquid (slurry and supernatant) in the mixing box is short, and the mixing is insufficient, which affects the subsequent flocculation effect; the other setting method is: one end of the pipeline is connected to the middle part of the mixing box, and the other end of the pipeline extends to the upper position of the feed well. Although this method can increase the residence time of the liquid (mixture of slurry and supernatant) in the mixing box, sedimentation is prone to occur at the bottom of the mixing box.
[0004] Therefore, it is difficult for the existing slurry conveying mechanism to avoid sedimentation in the mixing box while ensuring sufficient mixing of the liquid in the mixing box. Summary of the Invention
[0005] In view of this, it is necessary to provide a slurry conveying mechanism to solve the technical problem that the slurry conveying mechanism is difficult to avoid sedimentation in the mixing box while ensuring sufficient mixing of the liquid in the mixing box.
[0006] The present application provides a slurry conveying mechanism for conveying slurry to a feed well of a thickener, comprising a mixing box, a conveying pipe, an agitator, and a dilution assembly. The mixing box has a feed end for communicating with the slurry, one end of the conveying pipe is flush with and communicates with the inner bottom wall of the mixing box, the other end of the conveying pipe passes through the thickener and communicates with the side wall of the feed well, the height of the conveying pipe is lower than the liquid level of the thickener, the agitator is mounted on the mixing box, the output end of the agitator extends into the mixing box, and the dilution assembly is connected to the mixing box and the supernatant output end of the thickener to convey the supernatant of the thickener to the mixing box.
[0007] Furthermore, the height of the delivery pipe is 30-40 centimeters lower than the liquid level of the thickener.
[0008] Furthermore, the agitator includes a motor, a rotating shaft and an impeller. The motor is installed above the mixing box. The output end of the motor is connected to the rotating shaft. The rotating shaft extends into the mixing box and is connected to the impeller.
[0009] Furthermore, the slurry conveying mechanism further includes a feed pipe connected to the upper side wall of the mixing box, and the feed pipe forms a feed end of the mixing box.
[0010] Furthermore, the feeding pipe is arranged in a direction tangent to the mixing box.
[0011] Furthermore, the height of the output end of the agitator is lower than the liquid level of the thickener.
[0012] Furthermore, the dilution component includes a liquid pump, a reflux pipe and a dilution pipe, the water inlet end of the liquid pump is connected to the overflow tank of the thickener via the reflux pipe, and the water outlet end of the liquid pump is connected to the mixing box via the dilution pipe.
[0013] Furthermore, the dilution component is connected to the supernatant of the thickener at this stage.
[0014] Furthermore, the dilution component is connected to the supernatant of the next-stage thickener.
[0015] Furthermore, the dilution tube is arranged in a direction tangent to the mixing box.
[0016] Compared with the prior art, the present application provides a slurry conveying mechanism. Since the height of the conveying pipe is lower than the liquid level height of the thickener, and the liquid level height of the thickener is the same as the liquid level height in the feed well, the liquid level height in the mixing box is theoretically the same as the liquid level height in the feed well. As the supernatant of the thickener overflows, the liquid level in the feed well tends to decrease. At this time, under the action of water pressure, the liquid in the mixing box can be conveyed to the feed well, which can extend the time the liquid stays in the mixing box and ensure that the slurry and the supernatant are fully mixed. At the same time, one end of the conveying pipe is flush with and connected to the inner bottom wall of the mixing box, which can avoid sedimentation in the mixing box. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A schematic diagram of the overall structure of the slurry conveying mechanism provided in an embodiment of the present application;
[0018] Figure 2 This is a schematic diagram of the internal structure of the mixing box in the slurry conveying mechanism provided in an embodiment of the present application. DETAILED DESCRIPTION
[0019] The preferred embodiments of the present application are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present application to illustrate the principles of the present application, and are not used to limit the scope of the present application.
[0020] like Figure 1 As shown, the present application provides a slurry conveying mechanism for conveying slurry to the feed well M1 of the thickener M, comprising a mixing box 100, a conveying pipe 200, an agitator 300 and a dilution assembly 400. The mixing box 100 has a feed end for communicating with the slurry, one end of the conveying pipe 200 is flush with and connected to the inner bottom wall of the mixing box 100, and the other end of the conveying pipe 200 passes through the thickener M and is connected to the side wall of the feed well M1. The height of the conveying pipe 200 is lower than the liquid level of the thickener M. The agitator 300 is installed on the mixing box 100, and the output end of the agitator 300 extends into the mixing box 100. The dilution assembly 400 connects the mixing box 100 and the supernatant output end of the thickener M to convey the supernatant of the thickener M to the mixing box 100. By adding the supernatant liquid of the thickener M to the mixing box 100, the mixing rate of the slurry and the supernatant liquid in the mixing box 100 can be increased.
[0021] During implementation, since the height of the delivery pipe 200 is lower than the liquid level height of the thickener M, and the liquid level height of the thickener M is the same as the liquid level height in the feed well M1, the liquid level height in the mixing box 100 is theoretically the same as the liquid level height in the feed well M1. As the supernatant of the thickener M overflows, the liquid level in the feed well M1 tends to decrease. At this time, under the action of water pressure, the liquid in the mixing box 100 can be transported to the feed well M1, which can extend the time the liquid stays in the mixing box 100 and ensure that the slurry and the supernatant are fully mixed. At the same time, one end of the delivery pipe 200 is flush with and connected to the inner bottom wall of the mixing box 100, which can avoid sedimentation in the mixing box 100.
[0022] The mixing box 100 in this embodiment provides a space for mixing the slurry and the supernatant, wherein the slurry is introduced into the mixing box 100 through the feed end. Specifically, the slurry conveying mechanism further includes a feed pipe 110 connected to the upper side wall of the mixing box 100, and the feed pipe 110 forms the feed end of the mixing box 100.
[0023] In one embodiment, the internal space of the mixing box 100 is cylindrical. In order to increase the mixing rate of the slurry and the supernatant, the feed pipe 110 is arranged in a direction tangent to the mixing box 100 .
[0024] The delivery pipe 200 in this embodiment is used to transport the liquid in the mixing tank 100 to the feed well M1. To prevent sedimentation at the bottom of the mixing tank 100, one end of the delivery pipe 200 is flush with and connected to the inner bottom wall of the mixing tank 100. At the same time, to prevent the liquid in the mixing tank 100 from flowing directly into the feed well M1, the other end of the delivery pipe 200 passes through the thickener M and connects to the sidewall of the feed well M1. The height of the delivery pipe 200 is lower than the liquid level in the thickener M.
[0025] In this embodiment, the height of the delivery pipe 200 is 30-40 cm lower than the liquid level in the thickener M.
[0026] The agitator 300 in this embodiment is used to agitate the liquid in the mixing box 100 to increase the mixing rate between the slurry and the supernatant.
[0027] like Figure 2 As shown, in one embodiment, the agitator 300 includes a motor 310, a rotating shaft 320 and an impeller 330. The motor 310 is installed above the mixing box 100, and the output end of the motor 310 is connected to the rotating shaft 320. The rotating shaft 320 extends into the mixing box 100 and is connected to the impeller 330.
[0028] It should be noted that the height of the output end of the agitator 300 is lower than the liquid level of the thickener M.
[0029] In one embodiment, the dilution assembly 400 includes a liquid pump 410, a return pipe 420, and a dilution pipe 430. The water inlet of the liquid pump 410 is connected to the overflow tank of the thickener M via the return pipe 420, and the water outlet of the liquid pump 410 is connected to the mixing tank 100 via the dilution pipe 430. To increase the mixing rate of the slurry and the supernatant, the dilution pipe 430 is arranged tangentially to the mixing tank 100.
[0030] It is understood that the dilution assembly 400 is in communication with the supernatant of the current-stage thickener M or the next-stage thickener M. Specifically, the supernatant of the mixing tank 100 is provided by the thickener M and is delivered to the mixing tank 100 by the liquid pump 410. The supernatant of the thickener M at the next stage can be selected based on the turbidity requirement of the supernatant. If a clearer supernatant is required, the supernatant output of the next-stage thickener M is selected; otherwise, the supernatant output of the current-stage thickener M is selected.
[0031] Compared with the prior art: The present application provides a slurry conveying mechanism. Since the height of the conveying pipe 200 is lower than the liquid level height of the thickener M, and the liquid level height of the thickener M is the same as the liquid level height in the feed well M1, the liquid level height in the mixing box 100 is theoretically the same as the liquid level height in the feed well M1. As the supernatant of the thickener M overflows, the liquid level in the feed well M1 tends to decrease. At this time, under the action of water pressure, the liquid in the mixing box 100 can be conveyed to the feed well M1, which can extend the time the liquid stays in the mixing box 100, ensuring that the slurry and the supernatant are fully mixed. At the same time, one end of the conveying pipe 200 is flush with and connected to the inner bottom wall of the mixing box 100, which can avoid sedimentation in the mixing box 100.
[0032] The above is only a preferred specific implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in this application should be covered by the scope of protection of the present application.
Claims
1. A slurry conveying mechanism for conveying slurry to a feed well of a thickener, characterized in that: include: A mixing box having a feed end for communicating with the slurry; a delivery pipe, one end of which is flush with and communicated with the inner bottom wall of the mixing box, the other end of which passes through the thickener and communicates with the side wall of the feed well, and the height of the delivery pipe is lower than the liquid level of the thickener; an agitator mounted on the mixing box, wherein an output end of the agitator extends into the mixing box; A dilution component is connected to the mixing box and the supernatant output end of the thickener, and is used for conveying the supernatant of the thickener to the mixing box.
2. The slurry conveying mechanism according to claim 1, characterized in that: The height of the delivery pipe is 30-40 cm lower than the liquid level of the thickener.
3. The slurry conveying mechanism according to claim 1, characterized in that: The agitator includes a motor, a rotating shaft and an impeller. The motor is installed above the mixing box. The output end of the motor is connected to the rotating shaft. The rotating shaft extends into the mixing box and is connected to the impeller.
4. The slurry conveying mechanism according to claim 1, characterized in that: The slurry conveying mechanism further comprises a feed pipe connected to the upper side wall of the mixing box, and the feed pipe forms a feed end of the mixing box.
5. The slurry conveying mechanism according to claim 4, characterized in that: The feeding pipe is arranged in a direction tangent to the mixing box.
6. The slurry conveying mechanism according to claim 1, characterized in that: The height of the output end of the stirrer is lower than the liquid level of the thickener.
7. The slurry conveying mechanism according to claim 1, characterized in that: The dilution assembly includes a liquid pump, a reflux pipe and a dilution pipe. The water inlet of the liquid pump is connected to the overflow tank of the thickener via the reflux pipe, and the water outlet of the liquid pump is connected to the mixing box via the dilution pipe.
8. The slurry conveying mechanism according to claim 7, characterized in that: The dilution component is communicated with the supernatant of the thickener at this stage.
9. The slurry conveying mechanism according to claim 7, characterized in that: The dilution component is communicated with the supernatant of the next-stage thickener.
10. The slurry conveying mechanism according to claim 7, characterized in that: The dilution tube is arranged in a direction tangent to the mixing box.