Disc filter with inflatable stirring mechanism

Abstract

The utility model relates to a disc filter with an inflatable stirring mechanism, which is structurally characterized in that a lifting bridge frame is detachably arranged on a rack on the side surface of a tank body, and the inflatable stirring mechanism is mounted on the lifting bridge frame; the inflatable stirring mechanism comprises a branching device fixed on the lifting bridge frame, one side, far away from the tank body, of the branching device is externally connected with an air pipeline with a pressure reducing valve, and the other side of the branching device is connected with one ends of a plurality of high-pressure air pipes; and the other end of the high-pressure air pipe obliquely extends to the center line of the bottom of the tank body, is downwards and vertically aligned to the bottom of the tank body and is provided with a high-pressure air nozzle. In the working process, high-speed compressed air enters the bottom of the ore pulp tank body through the branching device and is sprayed out vertically and downwards, rotation and vortex can be formed at a specific position, and particles of all particle sizes have enough opportunities to make contact with one another and be mixed evenly; meanwhile, the high-speed airflow also generates strong impact force and disturbance force to mix the particle complex mixing blocks with air; the multi-phase mixing property becomes better and better through the combined action of the forces, and the efficient, uniform and sufficient mixing process is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a disc filter, in particular to a disc filter with inflatable stirring mechanism. BACKGROUND

[0002] The disc filter is a device for solid-liquid separation of slurry by using vacuum as filtering power. It is suitable for filtering and dewatering of fine particle materials in the industries of metal mine, non-metal mine, environmental protection sludge, cement and building materials.

[0003] The existing disc filter tank is generally equipped with a mechanical stirring mechanism to improve the multiphase mixing by rotating and stirring. However, the mechanical stirring mechanism needs to be provided with a transmission sealing structure, which is prone to failure due to overload and other reasons in high-temperature and dust production environment, and has insufficient stability.

[0004] CN210583970U discloses an improved disc filter stirring device, which performs pneumatic stirring on the tank through a compressed air blowing pipe. However, the compressed air blowing pipe needs to be connected with a compressed air pipe and a clean water pipe respectively, and the structure is relatively complex. Moreover, the blowing angle cannot be adjusted, the flexibility of use is insufficient, and the compressed air blowing pipe directly blows air to the bottom of the tank, which is prone to cause wear of the tank bottom and affect the service life. SUMMARY

[0005] The utility model provides a disc filter with inflatable stirring mechanism, which aims to overcome the above-mentioned deficiencies of the prior art and provide a disc filter stirring mechanism with simple structure and flexible use, and prevent damage to the tank.

[0006] The technical solution of the utility model is a disc filter with inflatable stirring mechanism, which includes a tank, a filter disc and a rack. A lifting bridge is detachably arranged on the rack at the side of the tank, and an inflatable stirring mechanism is installed on the lifting bridge. The inflatable stirring mechanism includes a shunt fixed on the lifting bridge. The shunt is connected with an air pipe with a pressure reducing valve at the side away from the tank. The other side of the shunt is connected with a plurality of one ends of high-pressure air pipes. The other ends of the high-pressure air pipes are inclinedly extended to the middle line of the tank bottom and vertically downwardly aligned with the tank bottom and installed with high-pressure air nozzles. During operation, high-speed compressed air enters the tank bottom through the shunt and is vertically downwardly sprayed, which can form rotation and vortex at a specific position, so that each particle size of the particles has enough opportunity to contact and mix uniformly. At the same time, the high-speed airflow can also generate strong impact force and disturbance force to mix the particle complex mixture with air. The combination of these forces makes the multiphase mixing better and better, thereby realizing efficient, uniform and sufficient mixing process.

[0007] Preferably, the high-pressure air pipes connecting the same branch unit are parallel to each other and extend at an angle towards the centerline of the bottom of the tank, passing through the axial gap of the filter disc. This structure does not affect the operation of the disc filter itself.

[0008] Preferably, a ceramic block is attached to the bottom of the tank, facing the direction of the high-pressure air nozzle. This prevents wear on the tank caused by prolonged high-pressure air output.

[0009] Advantages of this utility model: 1) Good stirring effect: Aeration stirring can generate a large number of bubbles, thereby achieving full stirring of the slurry, making the distribution of particles more uniform, making the thickness of the filter cake at both ends of the filter fan more uniform, and effectively improving the filtration efficiency.

[0010] 2) High stability and low failure rate: The air-filled agitator mainly uses compressed air as the medium. Compared with the existing mechanical agitator technology, it has no transmission and sealing structure. It is less affected by environmental factors in high temperature, dust and other environments, and can be flexibly applied in various working environments.

[0011] 3) Convenient operation and maintenance, low failure rate: The gas jet elevation angle can be adjusted by lifting the bridge frame, and the entire air-filling and stirring mechanism can be lifted off the tank when the equipment is stopped for cleaning, without affecting the operation of other components. The air-filling and stirring mechanism itself does not require frequent inspection or replacement of parts.

[0012] 4) High safety: There is no rotating mechanical structure outside the tank, which can avoid the failure of existing mechanical agitators due to overload, making it safer to use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the disc filter with an air-filling stirring mechanism according to this utility model.

[0014] In the diagram, 1 is the tank, 2 is the filter disc, 3 is the air duct, 4 is the pressure reducing valve, 5 is the distributor, 6 is the high-pressure air pipe, 7 is the high-pressure air nozzle, 8 is the ceramic block, 9 is the lifting bridge, and 10 is the frame. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to embodiments and specific implementation methods.

[0016] like Figure 1 As shown, the disc filter with an air-filled stirring mechanism includes a tank 1, a filter disc 2 and a frame 10. A lifting bridge 9 is detachably provided on the frame on the side of the tank 1, and the air-filled stirring mechanism is installed on the lifting bridge 9.

[0017] The air charging stirring mechanism comprises a shunt 5 fixed on the lifting bridge 9, the shunt 5 is connected with the air pipe 3 with a pressure reducing valve 4 at one side away from the tank 1, and the other side of the shunt 5 is connected with a plurality of high-pressure air pipes 6 at one end, the other end of the high-pressure air pipes 6 extends to the middle line of the bottom of the tank 1 and is vertically aligned to the bottom of the tank 1 and is installed with high-pressure air nozzles 7.

[0018] The high-pressure air pipes 6 connected with the same shunt 5 are parallel to each other and pass through the axial gap of the filter disc 2 when extending to the middle line of the bottom of the tank 1.

[0019] The inner bottom of the tank 1 towards which the high-pressure air nozzles 7 are pasted with ceramic blocks 8. The ceramic blocks 8 can prevent the tank from being worn by the long-time output of high-pressure air.

[0020] According to the above structure, during operation, high-speed compressed air enters the bottom of the tank 1 through the shunt 5 and is vertically sprayed downward, so that rotation and vortex are formed at a specific position, so that each particle has enough opportunity to contact and mix uniformly; at the same time, the high-speed airflow can also generate strong impact force and disturbance force to mix the particle complex mixture with air; the combination of these forces makes the multi-phase mixing better and better, so as to realize the high-efficiency, uniform and sufficient mixing process.

[0021] The above structure is convenient to operate and maintain and has low failure rate, because the height of the air injection angle can be adjusted by adjusting the height of the lifting bridge 9, and when the equipment is stopped for cleaning, the entire air charging stirring mechanism can be lifted away from the tank 1, without affecting the operation of other parts, and the air charging stirring mechanism itself also does not need to be frequently inspected or replaced.

[0022] The above-mentioned components are all prior art, and those skilled in the art can use any model and existing design that can realize the corresponding function.

[0023] The above-mentioned is only the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, without departing from the creative concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A disc filter with an aeration and stirring mechanism, characterized in that, The system includes a tank (1), a filter plate (2) and a frame (10). A lifting bridge (9) is detachably installed on the frame on the side of the tank (1). An air-filling and stirring mechanism is installed on the lifting bridge (9). The air-filling and stirring mechanism includes a distributor (5) fixed on the lifting bridge (9). An air pipe (3) with a pressure reducing valve (4) is connected to the side of the distributor (5) away from the tank (1). The other side of the distributor (5) is connected to one end of several high-pressure air pipes (6). The other end of the high-pressure air pipes (6) extends obliquely to the center line of the bottom of the tank (1) and is vertically aligned with the bottom of the tank (1) and a high-pressure air nozzle (7) is installed.

2. The disc filter with an aeration and stirring mechanism as described in claim 1, characterized in that, The high-pressure air pipes (6) connected to the same splitter (5) are parallel to each other and extend at an angle towards the center line of the bottom of the tank (1) through the axial gap of the filter disc (2).

3. The disc filter with an aeration and stirring mechanism as described in claim 1, characterized in that, A ceramic block (8) is attached to the bottom of the tank (1) facing the high-pressure air nozzle (7).

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