Thickener with anti-blocking function

Abstract

The utility model relates to the technical field of thickening devices, in particular to a thickener with an anti-clogging function, which comprises a thickener body, the thickener body comprises a cylinder section and an inverted cone-shaped discharge section arranged at the bottom of the cylinder section, the cylinder section is provided with a supernatant outlet, the bottom of the inverted cone-shaped discharge section is provided with a discharge port, and the bottom of the inverted cone-shaped discharge section is provided with an anti-clogging device. The device further comprises a discharging system connected with the discharging port, the discharging system comprises a funnel-shaped discharging barrel, a discharging pipe, a compressed air back-blowing system and a backwashing system, at least one compressed air inlet and at least one backwashing liquid inlet are formed in the discharging barrel and externally connected with the compressed air back-blowing system and the backwashing system respectively, and when discharging is not smooth, the compressed air inlet and the backwashing liquid inlet are communicated with the compressed air back-blowing system and the backwashing system respectively. Compressed air can be blown in from the wall of the funnel-shaped discharging barrel, so that slurry is prevented from depositing and caking in the discharging barrel, dredging is conducted in time, and blockage is prevented; when blockage occurs, the backwashing system and the compressed air blowback system can be started at the same time, and blocking is eliminated in time through backwashing and blowback, so that blockage is dredged.

Description

Technical Field

[0001] The invention relates to the technical field of thickening devices, and in particular to a thickener with an anti-blocking function. Background Art

[0002] The thickener is a large-scale key equipment in the field of non-ferrous hydrometallurgy and plays an important role in production. The thickener is large in size and stores a lot of materials, so its continuous and uniform discharge is crucial. Especially in the pressure leaching production of nickel sulfide raw materials, the nickel cobalt sulfate solution and tailings slurry produced by the normal pressure leaching and pressure leaching of nickel concentrate, nickel cobalt sulfide, cobalt-rich matte and other slurries need to enter the thickener for liquid-solid separation. The slurry is introduced into the distribution cylinder, and the liquid supernatant overflows in the thickener after sedimentation separation, and the solid phase and solid-liquid mixture are discharged from the thickener cone bottom. In actual production, when the thickener is in continuous production operation, the thickener cone bottom is not easy to be blocked and the operation is relatively stable. However, when the thickener is discontinuously discharging, due to the high density of the reaction materials such as nickel concentrate, it is easy to deposit and agglomerate to block the cone bottom. The subsequent dredging treatment is very cumbersome, the workload is large, the on-site environment is poor, and it is not conducive to safe production. The blockage of the thickener cone bottom is a technical problem in the production of nickel pressure leaching in the field of non-ferrous metallurgy. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model provides a thickener with an anti-blocking function, which specifically includes the following contents:

[0004] A thickener with anti-clogging function, comprising a thickener body, the thickener body comprising a cylindrical section and an inverted conical discharge section arranged at the bottom of the cylindrical section, used for discharging solid phase and solid-liquid mixture underflow slurry, the cylindrical section is provided with a supernatant outlet, the bottom of the inverted conical discharge section is provided with a discharge port, and also comprises a discharge system connected to the discharge port, the discharge system comprises a funnel-shaped discharge barrel, a discharge pipe, a compressed air backwash system, and a backwash system, the end of the funnel-shaped discharge barrel with a larger diameter is connected to the The end connected to the discharge port and with a smaller diameter is provided with a discharge port, and the side of the funnel-shaped discharge barrel is provided with at least one compressed air inlet and at least one backwash liquid inlet; the discharge pipe is connected to the discharge port, and a discharge valve and a slurry delivery pump are provided on the discharge pipe; the compressed air backwashing system includes a compressed air duct connected to the compressed air inlet and a compressed air valve provided on the compressed air duct; the backwashing system includes a backwashing liquid pipe connected to the backwashing liquid inlet and a backwashing liquid valve provided on the backwashing liquid pipe. At least one compressed air inlet and at least one backwashing liquid inlet are provided on the discharge barrel, and the compressed air backwashing system and the backwashing system are externally connected respectively. When the discharge is not smooth, the compressed air can be blown into the wall of the funnel-shaped discharge barrel to prevent the slurry from depositing and agglomerating in the discharge barrel, and the blockage can be cleared in time to prevent the occurrence of blockage; when the blockage has occurred, the backwashing system and the compressed air backwashing system can be opened at the same time, and the agglomeration can be eliminated in time and the blockage can be cleared by backwashing and backblowing.

[0005] Preferably, a discharge valve is further provided outside the discharge port, the discharge pipe is connected to the discharge valve, and the discharge valve is used to control the discharge.

[0006] Preferably, it also includes a flow monitoring device and an automatic control system, wherein the flow monitoring device is arranged on the discharge pipe, and the automatic control system is respectively connected to the flow monitoring device, the compressed air valve, and the backwashing liquid valve. The automatic control system is connected to the flow monitoring device, and the flow monitoring device monitors the flow of the discharge pipe in real time and transmits the information to the automatic control system in a timely manner. When an abnormal flow is detected or the flow reaches a preset value, the automatic control system can give an alarm according to a pre-set program, and / or control the compressed air backwashing system and / or the backwashing system to perform dredging operations.

[0007] Preferably, the end of the funnel-shaped discharge barrel with a larger diameter is connected to the discharge port via a flange; and / or the discharge pipe is connected to the discharge port via a flange. The flange can realize a detachable connection of the corresponding steps, which is more convenient for installation and disassembly.

[0008] Beneficial effects of the utility model:

[0009] (1) The device disclosed in the utility model is provided with at least one compressed air inlet and at least one backwash liquid inlet on the discharge barrel, which are respectively connected to a compressed air backblowing system and a backwashing system. When the discharge is not smooth, compressed air can be blown into the wall of the funnel-shaped discharge barrel to prevent the slurry from settling and agglomerating in the discharge barrel, and the blockage can be cleared in time to prevent the occurrence of blockage. When the blockage has occurred, the backwashing system and the compressed air backblowing system can be turned on at the same time, and the agglomerations can be eliminated in time and the blockage can be cleared by backwashing and backblowing.

[0010] (2) The device disclosed in the present invention also includes a flow monitoring device and an automatic control system. The automatic control system is connected to the flow monitoring device. The flow monitoring device monitors the flow conditions of the discharge pipe in real time and transmits the information to the automatic control system in a timely manner. When an abnormal flow is detected or the flow reaches a preset value, the automatic control system can alarm according to a pre-set program and / or control the compressed air backblowing system and / or backwashing system to perform dredging operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the device disclosed by the utility model. DETAILED DESCRIPTION

[0012] The utility model is described in detail below in conjunction with the accompanying drawings and specific implementation methods. The embodiments shown below do not limit the contents of the utility model described in the claims. In addition, the entire contents of the structures represented by the following embodiments are not limited to those necessary as solutions of the utility model described in the claims.

[0013] Reference Figure 1 , the arrow in the figure indicates the direction of material flow, a thickener with anti-blocking function, including a thickener body 15, the thickener body 15 includes a cylindrical section and an inverted conical discharge section arranged at the bottom of the cylindrical section, the cylindrical section is provided with a distribution cylinder 16 and a supernatant outlet 18, the bottom of the inverted conical discharge section is provided with a discharge port 17, and also includes a discharge system 2 connected to the discharge port 17, the discharge system 2 includes a funnel-shaped discharge cylinder 1, a discharge pipe 5, a compressed air backwash system, and a backwash system, the end of the funnel-shaped discharge cylinder 1 with a larger diameter is connected to the discharge port 17, and the end with a smaller diameter is provided with a discharge port 3. The side of the funnel-shaped discharge barrel 1 is provided with at least one compressed air inlet and at least one backwash liquid inlet 12, and the number and position of the compressed air inlet and the backwash liquid inlet 12 can be set according to actual needs; the discharge pipe 5 is connected to the discharge port 3, and a discharge valve 6 and a slurry conveying pump 7 are provided on the discharge pipe 5; the compressed air backwashing system includes a compressed air pipe 11 connected to the compressed air inlet and a compressed air valve 10 arranged on the compressed air pipe 11; the backwashing system includes a backwashing liquid pipe 14 connected to the backwashing liquid inlet 12 and a backwashing liquid valve 13 arranged on the backwashing liquid pipe 14. At least one compressed air inlet and at least one backwash liquid inlet 12 are provided on the discharge barrel, which are respectively connected to a compressed air backblowing system and a backwashing system. When the discharge is not smooth, compressed air can be blown into the wall of the funnel-shaped discharge barrel 1 to prevent the slurry from settling and agglomerating in the discharge barrel, and the blockage can be cleared in time to prevent the occurrence of blockage. When the blockage has occurred, the backwashing system and the compressed air backblowing system can be turned on at the same time, and the agglomerations can be eliminated in time and the blockage can be cleared by backwashing and backblowing.

[0014] In one embodiment of the present utility model, a discharge valve 4 is further provided outside the discharge port 17, and the discharge pipe 5 is connected to the discharge valve 4, and the discharge valve 4 is used to control the discharge.

[0015] In one embodiment of the utility model, a flow monitoring device 8 and an automatic control system are also included. The flow monitoring device 8 is arranged on the discharge pipe 5, and the automatic control system is respectively connected to the flow monitoring device 8, the compressed air valve 10, and the backwashing liquid valve 13. The automatic control system is connected to the flow monitoring device 8, and the flow monitoring device 8 monitors the flow of the discharge pipe 5 in real time and transmits the information to the automatic control system in time. When the flow is abnormal or the flow reaches the preset value, the automatic control system can alarm according to a pre-set program, and / or control the compressed air backwashing system and / or the backwashing system to perform dredging operations.

[0016] In one embodiment of the utility model, the end of the funnel-shaped discharge barrel 1 with a larger diameter is connected to the discharge port 17 via a flange; and / or the discharge pipe 5 is connected to the discharge port 3 via a flange. The flange can realize a detachable connection of the corresponding steps, which is more convenient for installation and disassembly.

[0017] In one embodiment of the utility model, when the device is in use, the slurry is separated into liquid and solid by sedimentation in the thickener, and the liquid supernatant flows out from the supernatant outlet 18. When discharging the slurry, first open the discharge valve 4 and the discharge valve 6, then start the slurry delivery pump 7, and discharge the slurry from the discharge pipe 5. At the same time, the flow monitoring device 8 monitors the flow information of the discharge in real time and transmits it to the automatic control system, which is a DCS control system. When the discharge flow value is less than 2 / 3 of the normal value, open the compression air valve 10 to blow back the compressed air through the compression air duct 11 to the inner wall of the funnel-shaped discharge barrel 1 at the bottom of the thickener to prevent the slurry from settling and agglomerating and clogging; when the flow is normal, close the compression air valve 10 and stop blowing. When the discharge flow rate is less than 1 / 2 of the normal value, the DCS alarms, and when back-blowing the compressed air, the backwash liquid valve 13 is opened at the same time, and the agglomerated materials in the funnel-shaped discharge barrel 1 at the bottom of the thickener are blown and backwashed through the backwash liquid pipe 14 to eliminate the blockage of agglomerates. When the flow rate is normal, the compressed air valve 10 and the backwash liquid valve 13 are closed, and the blowing and backwashing are stopped. This prevents the thickener from being blocked and ensures the safe and stable operation of the thickener for a long period of time.

[0018] In the description of the present application, it should be noted that the terms used in the present invention to indicate directions and positional relationships indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0019] Unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0020] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A thickener with anti-clogging function, comprising a thickener body, wherein the thickener body comprises a cylindrical section and an inverted conical discharge section arranged at the bottom of the cylindrical section, wherein the cylindrical section is provided with a supernatant outlet, and the bottom of the inverted conical discharge section is provided with a discharge port, characterized in that: It also includes a discharge system connected to the discharge port, the discharge system includes a funnel-shaped discharge barrel, a discharge pipe, a compressed air backwash system, and a backwash system. The end of the funnel-shaped discharge barrel with a larger diameter is connected to the discharge port, and the end with a smaller diameter is provided with a discharge port, and the side of the funnel-shaped discharge barrel is provided with at least one compressed air inlet and at least one backwash liquid inlet; The discharge pipe is connected to the discharge port, and a discharge valve and a slurry delivery pump are provided on the discharge pipe; The compressed air back-blowing system comprises a compressed air duct connected to the compressed air inlet and a compressed air valve arranged on the compressed air duct; The backwash system comprises a backwash liquid pipe connected to a backwash liquid inlet and a backwash liquid valve arranged on the backwash liquid pipe.

2. A thickener with anti-clogging function according to claim 1, characterized in that: A discharge valve is also arranged outside the discharge port, and the discharge pipe is connected to the discharge valve.

3. A thickener with anti-clogging function according to claim 1, characterized in that: It also includes a flow monitoring device and an automatic control system. The flow monitoring device is arranged on the discharge pipe, and the automatic control system is respectively connected with the flow monitoring device, the compression air valve, and the backwash liquid valve.

4. The thickener with anti-clogging function according to any one of claims 1 to 3, characterized in that: The end of the funnel-shaped discharge barrel with a larger diameter is connected to the discharge port via a flange; and / or the discharge pipe is connected to the discharge port via a flange.

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