Suction filtration device
Technical Field
The utility model belongs to the field of filtering equipment, and particularly relates to a suction filtration device.
Background
The chemical raw materials are usually required to be filtered in the production process so as to improve the purity of the raw materials, the filtering efficiency is improved at present by adopting a suction filtration mode, the defect of small treatment capacity still exists in the suction filtration process at present, the large-batch production needs cannot be met, and in order to meet the production needs, a plurality of suction filtration devices are matched for simultaneous operation, the occupied space of the devices is increased, the pipelines are numerous, and the maintenance difficulty of the devices is increased.
Disclosure of utility model
In order to solve the technical problems, the utility model aims to provide a suction filtration device with simple structure and high suction filtration efficiency.
In order to achieve the purpose, the suction filtration device comprises a storage device, a liquid collecting tank and a plurality of filtration columns, wherein the storage device is used for containing liquid to be filtered, the filtration columns are hollow, the filtration columns are vertically arranged in the storage device, a filtration area is arranged at the side wall of each filtration column, the liquid to be filtered permeates into the filtration columns through the filtration area, a filtrate outlet penetrating through the bottom of the storage device is arranged at the lower end of each filtration column, the liquid collecting tank is provided with a liquid inlet, a liquid outlet and an exhaust port arranged at the upper end of the liquid collecting tank, the exhaust port is used for sucking negative pressure, the filtrate outlets are communicated with the liquid inlet of the liquid collecting tank, and a first valve is arranged at the liquid outlet of the liquid collecting tank.
The technical scheme has the beneficial effects that the filter columns are arranged in the material storage device for filtering simultaneously, so that the filter columns can be used for sealing the filtrate outlet by the liquid collecting tank for maintaining pressure when negative pressure suction filtration is carried out on the filter columns, and filtrate in the filter columns can be timely discharged into the liquid collecting tank.
In the above technical scheme, the filter column comprises a filter shell and a filter layer, wherein the filter shell is hollow, the filter shell is vertically arranged in the accumulator, the lower end of the filter shell penetrates through the bottom of the accumulator, the filtrate outlet is arranged at the lower end of the filter shell, holes are uniformly distributed on the side wall of the filter shell, the filter layer is wrapped on the side wall of the filter shell and covers the holes, and the filter layer forms the filter zone.
The technical scheme has the beneficial effects that the structure is simple, so that the side wall of the whole filter shell is wrapped by the filter layer for filtering, the area of a filtering area can be increased, and the filtering efficiency of a single filter column is improved.
In the technical scheme, the filter layer is filter cloth or a filter membrane.
The technical scheme has the beneficial effects of simple structure and good filtering effect.
In the technical scheme, the lower end of the filter shell is in a horn-shaped closing-in.
The technical scheme has the beneficial effect that the liquid in the filter shell can be quickly discharged downwards.
In the above technical scheme, the material storage device is further provided with a stirring piece for stirring the liquid to be filtered.
The technical scheme has the beneficial effects that the liquid to be filtered in the accumulator is in a flowing state, so that dregs can be prevented from depositing on the outer wall of the filter column.
In the above technical scheme, a plurality of filter columns are circumferentially arranged at intervals around the stirring piece in the material storage device.
The technical scheme has the beneficial effects that the arrangement of the filter column does not influence the normal operation of the stirring piece.
In the above technical scheme, the filtrate outlet is provided with a second valve, the air outlet is provided with a third valve, the filter column is further provided with a back flushing port communicated with the inside of the filter column, and the back flushing port is provided with a fourth valve.
The technical scheme has the beneficial effects that the filter column can be subjected to back flushing treatment regularly, so that the filter column can always maintain a better filtering effect.
According to the technical scheme, the bottom wall of the material storage device is provided with the liquid outlet, and the liquid outlet is provided with the fifth valve.
The technical scheme has the beneficial effects that the back flushing water or residual feed liquid in the storage device can be discharged through the liquid outlet.
In the technical scheme, the material storage device is a groove body with an upward notch.
The technical scheme has the beneficial effects that the structure is simple, and the liquid state in the accumulator can be conveniently observed.
According to the technical scheme, the material storage device is a tank body, the material storage device is provided with the feeding port and the pressurizing port, and the pressurizing port is used for pressurizing the material storage device.
The technical scheme has the beneficial effects that the storage device is a closed device, and can be charged through the feeding hole and pressurized through the pressurizing hole, so that the pressure difference between the inside and the outside of the filter column is larger, and the filtering efficiency can be further improved.
Drawings
Fig. 1 is a schematic structural diagram of a suction filtration device according to embodiment 1 of the present utility model;
FIG. 2 is a schematic diagram of a filter column according to embodiment 1 of the present utility model;
FIG. 3 is a schematic view showing the structure of a filter column according to embodiment 1 of the present utility model when a back flushing port is provided;
FIG. 4 is a schematic view showing the distribution of the stirring element and the plurality of filter columns in the hopper according to example 1 of the present utility model;
Fig. 5 is a schematic view of the structure of the container according to embodiment 2 of the present utility model.
1, A material storage device, 11, a liquid discharge port, 12, a material inlet, 13, a pressurizing port, 14, a safety valve, 2, a filter column, 21, a filter shell, 211, a filtrate outlet, 212, a hole, 213, a back flushing port, 22, a filter layer, 3, a stirring piece, 4, a liquid collecting tank, 41, an air outlet, 51, a first valve, 52, a second valve, 53, a third valve, 54, a fourth valve, 55, a fifth valve, 6 and negative pressure equipment.
Detailed Description
The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model. The utility model is more particularly described by way of example in the following paragraphs with reference to the drawings. Advantages and features of the utility model will become more apparent from the following description and from the claims. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model.
Example 1
As shown in fig. 1, the embodiment provides a suction filtration device, which comprises a material storage device 1, a liquid collection tank 4 and a plurality of filter columns 2, wherein the material storage device 1 is internally used for containing liquid to be filtered, the filter columns 2 are hollow, the filter columns 2 are vertically arranged in the material storage device 1, a filtering area is formed in the side wall of each filter column 2, the liquid to be filtered permeates into the filter columns 2 through the filtering area, a filtrate outlet 211 penetrating through the bottom of the material storage device 1 is formed in the lower end of each filter column 2, the liquid collection tank 4 is provided with a liquid inlet, a liquid outlet and an exhaust port arranged at the upper end of the liquid collection tank, the exhaust port is used for sucking negative pressure, the plurality of filtrate outlets 211 are communicated with the liquid inlet of the liquid collection tank 4, a first valve 51 is arranged at the liquid outlet of the liquid collection tank 4, and a plurality of filter columns are arranged in the material storage device for filtering simultaneously, so that when the filter columns perform negative pressure suction filtration, the filtrate outlet is sealed by the liquid collection tank, and the filtrate outlet is kept in the filter columns and discharged into the liquid collection tank in time. The exhaust port in this embodiment is used to communicate with the air inlet of the negative pressure device to draw negative pressure.
As shown in fig. 2, in the above technical solution, the filter column 2 includes a filter shell 21 and a filter layer 22, the filter shell 21 is hollow, and is vertically disposed in the hopper 1, the lower end of the filter shell 21 penetrates through the bottom of the hopper 1, the filtrate outlets 211 are disposed at the lower end of the filter shell 21, holes 212 are uniformly distributed on the side wall of the filter shell 21, the filter layer 22 wraps the side wall of the filter shell 21 and covers the holes 212, and the filter layer 22 forms the filter area, so that the side wall of the whole filter shell is wrapped by the filter layer for filtering, and the area of the filter area can be increased to improve the filtering efficiency of a single filter column.
The filter layer 22 is a filter cloth or a filter membrane (not limited to this, of course), and has a simple structure and a good filtering effect.
In the above technical solution, the lower end of the filter shell 21 is flared to close, so that the liquid in the filter shell can be rapidly discharged downwards.
As shown in fig. 4, in the above technical solution, the stirring member 3 for stirring the liquid to be filtered is further disposed on the container 1, so that the liquid to be filtered in the container is in a flowing state, and thus, dregs can be prevented from being deposited on the outer wall of the filter column. In this embodiment, the stirring member may include a stirring paddle and a driving motor, where the stirring paddle is vertically disposed in the middle part in the accumulator, and the paddle shaft of the stirring member is sealed to penetrate through the lower end of the accumulator, and the driving motor is disposed at the lower end of the accumulator and is in transmission connection with the lower end of the paddle shaft (the structure of the stirring member belongs to the prior art and is not repeated here).
In the above technical scheme, the plurality of filter columns 2 are circumferentially arranged at intervals around the stirring piece 3 in the material storage device 1, so that the arrangement of the filter columns does not influence the normal operation of the stirring piece.
As shown in fig. 3, in the above technical solution, the filtrate outlet 211 is provided with a second valve 52, the air outlet 41 is provided with a third valve 53, the filter column 2 is further provided with a back flushing port 213 communicated with the inside of the filter column, and the back flushing port 213 is provided with a fourth valve 54, so that the filter column can perform back flushing treatment periodically, and the filter column is ensured to maintain a better filtering effect all the time. The back flushing port can be arranged at the lower end of the filter shell.
In the above technical solution, the bottom wall of the container 1 is provided with the liquid outlet 11, and the fifth valve 55 is disposed at the liquid outlet 11, so that the backwash water or the residual liquid in the container can be discharged through the liquid outlet.
According to the technical scheme, the storage device 1 is a groove body with an upward notch, the structure is simple, and the liquid state in the storage device can be conveniently observed.
The negative pressure device 6 in this embodiment may employ a negative pressure pump.
When the suction filtration device provided in the embodiment is operated, the first valve, the fourth valve and the fifth valve are closed, the second valve and the third valve are opened, negative pressure equipment is started simultaneously, the liquid level in the material storage device is required to submerge the filter column, particularly, the filtering area of the filter column is required to be submerged, the plurality of backwashing ports are communicated with the water supply pipe at the moment when the suction filtration device is backwashed, the second valve is closed, the fourth valve and the fifth valve are opened simultaneously, water is supplied to the filter column through the water supply pipe at the moment, backwashed is carried out on the filter layer, and backwashed sewage in the material storage device is discharged through the liquid outlet 11.
Example 2
As shown in fig. 5, the difference between the embodiment 1 and the embodiment 1 is that the material container 1 is a tank, and the material container 1 is provided with a feed inlet 12 and a pressurizing inlet 13, and the pressurizing inlet 13 is used for pressurizing the material container 1, so that the material container is a closed device, which can be fed through the feed inlet and pressurized through the pressurizing inlet (the pressurizing inlet can be communicated with an air outlet of a negative pressure device, so that the cost of the device can be further reduced), so that the pressure difference between the inside and the outside of the filter column is larger, and the filtering efficiency can be further improved. Preferably, in order to avoid the excessive pressure in the accumulator, a safety valve 14 (the safety valve may be disposed at the pressurizing port) may be additionally disposed at the upper end of the accumulator, and although the accumulator may be pressurized, it is preferable that the inlet is not affected to normally introduce the liquid to be filtered.
In this embodiment, the liquid level in the accumulator is maintained such that the filtration zone of the filter column is completely submerged, but preferably below the pressurization port.
The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the utility model in any way, and those skilled in the art may easily implement the present utility model as shown in the drawings and described above, but many modifications, adaptations and variations of the present utility model using the above disclosed technical matters will be equivalent to the embodiments of the present utility model without departing from the scope of the present utility model, and meanwhile, any equivalent changes, adaptations and variations of the above embodiments according to the essential technology of the present utility model are all within the scope of the technical matters of the present utility model.