Suction filtration device

Abstract

The utility model discloses a suction filtration device which comprises a stocker, a liquid collecting tank and a plurality of filter columns, the stocker is used for containing liquid to be filtered, the filter columns are hollow, the filter columns are vertically arranged in the stocker, the side walls of the filter columns are provided with filter areas, the liquid to be filtered permeates into the filter columns through the filter areas, and the liquid collecting tank is connected with the stocker. A filtrate outlet penetrating through the bottom of the stocker is formed in the lower end of the filter column, the liquid collecting tank is provided with a liquid inlet, a liquid outlet and an exhaust port formed in the upper end of the liquid collecting tank, and the exhaust port is used for pumping negative pressure; a plurality of filtrate outlets are formed in the stocker, the plurality of filtrate outlets are communicated with a liquid inlet of the liquid collecting tank, a first valve is arranged at a liquid outlet of the liquid collecting tank, and a plurality of filter columns are arranged in the stocker for filtering at the same time, so that when the filter columns perform negative pressure suction filtration, the filtrate outlets are sealed by the liquid collecting tank to maintain pressure; and the filtrate in the filter column can be timely discharged into the liquid collecting tank.

Description

TECHNICAL FIELD

[0001] The utility model belongs to filter equipment field especially, it relates to a suction filtration device. BACKGROUND

[0002] Chemical raw materials usually need to be filtered in the production process to improve the purity of raw materials, at present, in order to improve the filtering efficiency, the suction filtration mode is handled, but there is still the defect of small processing capacity in the suction filtration process, cannot satisfy the production needs of large quantities, and in order to satisfy the production needs, a plurality of suction filtration devices need to be matched to run simultaneously, but this can lead to the increase of the occupied space of equipment, and the pipeline is numerous, increases the maintenance difficulty of equipment. UTILITY MODEL CONTENT

[0003] In order to solve the above technical problem, the utility model provides a suction filtration device that is simple in structure and high in suction filtration efficiency.

[0004] In order to achieve the above object, the utility model provides the following technical scheme: a suction filtration device, including accumulator, liquid collecting tank and multiple filter columns, the accumulator is used to accommodate the liquid to be filtered, the filter column is hollow inside, multiple filter columns are vertically arranged in the accumulator, the side wall of the filter column is provided with a filter area, the liquid to be filtered penetrates into the filter column through the filter area, the lower end of the filter column is provided with a filter liquid outlet penetrating through the bottom of the accumulator, the liquid collecting tank is provided with a liquid inlet, a liquid outlet and an exhaust port arranged at the upper end, and the exhaust port is used to extract negative pressure; multiple filter liquid outlets are communicated with the liquid inlet of the liquid collecting tank, and the liquid outlet of the liquid collecting tank is provided with a first valve.

[0005] The beneficial effects of the above technical scheme are that multiple filter columns are arranged in the accumulator to filter simultaneously, so that the filter columns can be closed by the liquid collecting tank to maintain pressure when negative pressure suction filtration is carried out, and the filter liquid in the filter columns can be discharged into the liquid collecting tank in time.

[0006] In the above technical scheme, the filter column includes a filter shell and a filter layer, the inside of the filter shell is hollow, and the filter shell is vertically arranged in the accumulator, the lower end of the filter shell penetrates through the bottom of the accumulator, the filter liquid outlet is arranged at the lower end of the filter shell, and the side wall of the filter shell is uniformly provided with a plurality of eyelets, the filter layer is wrapped on the side wall of the filter shell and covers the eyelets, and the filter layer constitutes the filter area.

[0007] The beneficial effects of the above technical scheme are that the structure is simple, so that the side wall of the entire filter shell is wrapped by the filter layer to filter, which can increase the area of the filter area and improve the filtering efficiency of a single filter column.

[0008] The filter layer is filter cloth or filter membrane.

[0009] The technical scheme has the advantages that the structure is simple and the filtering effect is good.

[0010] The lower end of the filter shell is in a trumpet shape.

[0011] The technical scheme has the advantage that the liquid in the filter shell can be quickly discharged.

[0012] The storage device is further provided with a stirring member for stirring the liquid to be filtered.

[0013] The technical scheme has the advantage that the liquid to be filtered in the storage device is in a flowing state, so that the residue can be prevented from depositing on the outer wall of the filter column.

[0014] The plurality of filter columns are annularly and spacedly arranged around the stirring member in the storage device.

[0015] The technical scheme has the advantage that the arrangement of the filter columns does not affect the normal operation of the stirring member.

[0016] The filter outlet is provided with a second valve, the exhaust port is provided with a third valve, the filter column is further provided with a backwashing port in communication with the inside of the filter column, and the backwashing port is provided with a fourth valve.

[0017] The technical scheme has the advantage that the filter column can be regularly backwashed to ensure that the filter column always has a good filtering effect.

[0018] The bottom wall of the storage device is provided with a liquid discharge port, and the liquid discharge port is provided with a fifth valve.

[0019] The technical scheme has the advantage that the backwashing water or residual liquid in the storage device can be discharged through the liquid discharge port.

[0020] The storage device is a tank body with a notch facing upward.

[0021] The technical scheme has the advantages that the structure is simple and the liquid state in the storage device can be conveniently observed.

[0022] The storage device is a tank body, and the storage device is provided with a feeding port and a pressurizing port for pressurizing the inside of the storage device.

[0023] The beneficial effects of the above technical scheme are that the storage device is a closed device, which can be filled through the filling port and pressurized through the pressurizing port, so that the pressure difference between the inside and outside of the filter column is larger, thereby further improving the filtering efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The structure diagram of the suction filtration device according to the embodiment 1 of the present application is shown in the figure.

[0025] Figure 2 The structure diagram of the filter column according to the embodiment 1 of the present application is shown in the figure.

[0026] Figure 3 The structure diagram of the filter column according to the embodiment 1 of the present application is shown in the figure.

[0027] Figure 4 The distribution diagram of the stirring member and the plurality of filter columns in the storage device according to the embodiment 1 of the present application is shown in the figure.

[0028] Figure 5 The structure diagram of the storage device according to the embodiment 2 of the present application is shown in the figure.

[0029] In the figure: 1, storage device; 11, liquid discharge port; 12, filling port; 13, pressurizing port; 14, safety valve; 2, filter column; 21, filter shell; 211, filtrate outlet; 212, eyelet; 213, backwashing port; 22, filter layer; 3, stirring member; 4, liquid collecting tank; 41, exhaust port; 51, first valve; 52, second valve; 53, third valve; 54, fourth valve; 55, fifth valve; 6, negative pressure device. DETAILED DESCRIPTION

[0030] The principles and features of the present application are described below in combination with the drawings, and the examples are only used to explain the present application and are not used to limit the scope of the present application. In the following paragraphs, the present application is described in more detail with examples in combination with the drawings. The advantages and features of the present application will be more apparent according to the following description and claims. It should be noted that the drawings are very simplified and use non-precise proportions, only to facilitate and clarify the purpose of assisting the description of the embodiments of the present application.

[0031] Embodiment 1

[0032] As Figure 1As shown, this embodiment provides a filtration device, including a storage container 1, a collection tank 4, and multiple filter columns 2. The storage container 1 is used to hold the liquid to be filtered. The filter columns 2 are hollow inside, and the multiple filter columns 2 are vertically arranged inside the storage container 1. The side wall of the filter column 2 has a filtration zone. The liquid to be filtered seeps into the filter column 2 through the filtration zone. The lower end of the filter column 2 is provided with a filtrate outlet 211 that penetrates the bottom of the storage container 1. The collection tank 4 has an inlet, an outlet, and an exhaust port at its upper end. The exhaust port is used to draw negative pressure. The multiple filtrate outlets 211 are all connected to the inlet of the collection tank 4. The outlet of the collection tank 4 is provided with a first valve 51. By setting multiple filter columns in the storage container to filter simultaneously, the collection tank can seal the filtrate outlet to maintain pressure when the filter columns are performing negative pressure filtration, while the filtrate in the filter columns can be discharged into the collection tank in a timely manner. In this embodiment, the exhaust port is used to connect with the air inlet of the negative pressure device to draw negative pressure.

[0033] like Figure 2 As shown, the filter column 2 in the above technical solution includes a filter shell 21 and a filter layer 22. The filter shell 21 is hollow inside and is vertically arranged in the storage container 1. The lower end of the filter shell 21 penetrates the bottom of the storage container 1. The filtrate outlet 211 is located at the lower end of the filter shell 21. The side wall of the filter shell 21 is evenly distributed with holes 212. The filter layer 22 wraps around the side wall of the filter shell 21 and covers the holes 212. The filter layer 22 constitutes the filtration zone. Its structure is simple, so that the entire side wall of the filter shell is wrapped by the filter layer for filtration, which can increase the area of ​​the filtration zone and improve the filtration efficiency of a single filter column.

[0034] The filter layer 22 described in the above technical solution is a filter cloth or filter membrane (but not limited to these), which has a simple structure and good filtration effect.

[0035] The lower end of the filter housing 21 in the above technical solution is flared, which allows the liquid inside the filter housing to drain quickly.

[0036] like Figure 4 As shown, the storage container 1 in the above technical solution is further provided with a stirring element 3 for stirring the liquid to be filtered, so that the liquid to be filtered in the storage container is in a flowing state, thereby preventing the sediment from depositing on the outer wall of the filter column. In this embodiment, the stirring element may include a stirring paddle and a drive motor. The stirring paddle is vertically arranged in the middle of the storage container, and its paddle shaft seal passes through the lower end of the storage container. The drive motor is arranged at the lower end of the storage container and is connected to the lower end of the paddle shaft for transmission (the structure of the stirring element is prior art and will not be described in detail here).

[0037] The multiple filter columns 2 are arranged in the storage device 1 in a ring shape around the stirring member 3, so that the arrangement of the filter columns does not affect the normal operation of the stirring member.

[0038] As shown in Figure 3 The filter liquid outlet 211 is provided with a second valve 52, the exhaust port 41 is provided with a third valve 53, and the filter column 2 is further provided with a backwashing port 213 in communication with the inside of the filter column 2, and the backwashing port 213 is provided with a fourth valve 54, so that the filter column can be periodically backwashed to ensure that the filter column always maintains a better filtering effect. The backwashing port can be arranged at the lower end of the filter shell.

[0039] The bottom wall of the storage device 1 is provided with a liquid discharge port 11, and the liquid discharge port 11 is provided with a fifth valve 55, so that the backwashing water or residual liquid in the storage device can be discharged through the liquid discharge port.

[0040] The storage device 1 is a tank with the notch facing upward, which has a simple structure and can conveniently observe the liquid state in the storage device.

[0041] The negative pressure equipment 6 in the embodiment can be a negative pressure pump.

[0042] When the suction filtration device is operated, the first valve, the fourth valve, and the fifth valve are closed, the second valve and the third valve are opened, and the negative pressure equipment is started, and the liquid level in the storage device needs to immerse the filter column, especially the filtering area of the filter column. When the suction filtration device is backwashed, the multiple backwashing ports are in communication with the water supply pipe, the second valve is closed, and the fourth valve and the fifth valve are opened at this time, water is supplied to the filter column from the water supply pipe to backwash the filter layer, and the backwashed sewage in the storage device is discharged through the liquid discharge port 11.

[0043] Embodiment 2

[0044] As shown in Figure 5 The storage device 1 is a tank, and the storage device 1 is provided with a feeding port 12 and a pressurizing port 13, the pressurizing port 13 is used to pressurize the storage device 1, so that the storage device is a closed device, which can be fed through the feeding port and pressurized through the pressurizing port (the pressurizing port can be in communication with the gas outlet of the negative pressure equipment, which can further reduce the cost of the equipment), so that the pressure difference between the inside and outside of the filter column is larger, thereby further improving the filtering efficiency. Preferably, in order to avoid that the pressure in the storage device is too high, a safety valve 14 can be additionally arranged at the upper end of the storage device (the safety valve can be arranged at the pressurizing port), although the storage device will be pressurized, but the normal feeding of the liquid to be filtered through the feeding port is preferred.

[0045] The liquid level in the reservoir in the embodiment should be kept at a position that submerges the filtering zone of the filter column entirely, but is below the pressurizing port.

[0046] The above is only a preferred embodiment of the present application, and does not limit the present application in any form; any person skilled in the art can smoothly implement the present application according to the drawings and the above description; however, any equivalent changes, modifications and evolutions made by those skilled in the art within the scope of the technical scheme of the present application, using the above disclosed technical content, are equivalent embodiments of the present application; meanwhile, any equivalent changes, modifications and evolutions made according to the essential technology of the present application are still within the protection scope of the technical scheme of the present application.

Claims

1. A suction filtration apparatus, characterized in that, The filter comprises a storage tank (1), a collecting tank (4) and a plurality of filter columns (2), the storage tank (1) is used for containing liquid to be filtered, the filter columns (2) are vertically arranged in the storage tank (1), the filter columns (2) have filter zones on the side walls, the liquid to be filtered penetrates into the filter columns (2) through the filter zones, the lower ends of the filter columns (2) are provided with filtrate outlets (211) penetrating through the bottom of the storage tank (1), the collecting tank (4) has a liquid inlet, a liquid outlet and an exhaust port (41) arranged at the upper end of the collecting tank (4), the exhaust port (41) is used for drawing negative pressure, the filtrate outlets (211) are communicated with the liquid inlet of the collecting tank (4), and the liquid outlet of the collecting tank (4) is provided with a first valve (51).

2. The filtration apparatus of claim 1, wherein, The filter columns (2) comprise filter shells (21) and filter layers (22), the filter shells (21) are vertically arranged in the storage tank (1), the lower ends of the filter shells (21) penetrate through the bottom of the storage tank (1), the filtrate outlets (211) are arranged at the lower ends of the filter shells (21), the side walls of the filter shells (21) are uniformly provided with holes (212), the filter layers (22) are wrapped on the side walls of the filter shells (21) and cover the holes (212), and the filter layers (22) constitute the filter zones.

3. The filtration apparatus of claim 2, wherein, The filter layers (22) are filter cloths or filter membranes.

4. The filtration apparatus of claim 2, wherein, The lower ends of the filter shells (21) are trumpet-shaped.

5. The filtration apparatus of claim 1, wherein, The storage tank (1) is further provided with a stirring member (3) for stirring the liquid to be filtered.

6. The filtration apparatus of claim 5, wherein, The filter columns (2) are annularly and spacedly arranged around the stirring member (3) in the storage tank (1).

7. The filtration apparatus of claim 1, wherein, The filtrate outlets (211) are provided with second valves (52), the exhaust port (41) is provided with a third valve (53), the filter columns (2) are further provided with backflushing ports (213) communicated with the interiors of the filter columns (2), and the backflushing ports (213) are provided with fourth valves (54).

8. The filtration apparatus of claim 7, wherein, The bottom wall of the storage tank (1) is provided with a liquid discharge port (11), and the liquid discharge port (11) is provided with a fifth valve (55).

9. The filtration apparatus of claim 1, wherein, The storage tank (1) is a tank body with a notch facing upward.

10. The filtration apparatus of claim 1, wherein, The storage tank (1) is a tank body, and the storage tank (1) is provided with a material inlet (12) and a pressurizing port (13), the pressurizing port (13) is used for pressurizing the storage tank (1).

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