CN103801126B - The filtration system of filter and this filter of use - Google Patents

Abstract

The invention relates to a filter and a filter system using the filter. The filter system includes a filter. The filter includes a vertically arranged filter core. The upper orifice of the inner hole of the filter core is an open feeding port. Gradually increases from top to bottom. The filter element is arranged vertically, and the diameter of the inner hole of the filter element gradually increases from top to bottom. When in use, the slurry enters the filter element from the feed port. Due to the effect of gravity, the particles in the slurry are difficult to accumulate in the filter element, which slows down the speed of filter element blocking. , thereby slowing down the clogging of the filter element, reducing the cleaning frequency of the filter, and reducing the production cost.

Description

Filter and filtration system using the same

technical field

The invention relates to filter equipment, in particular to a filter and a filter system using the filter.

Background technique

At present, a cylindrical filter is used in the slurry mixing process of the power lithium battery. The filter includes a shell and a cylindrical filter element arranged in the shell. One end of the filter element is closed, and the other end is an open feed port. Radial filter holes are arranged on the top, and a discharge port communicating with the radial filter holes is arranged on the casing. When in use, a filter is connected in series between the slurry barrel and the feed pipe of the coating machine. The slurry enters the filter element through the feed inlet, and then is filtered through the radial filter holes and then sent out of the filter through the outlet. The existing problem of this kind of filter is: the filter element has a cylindrical structure, so the particles in the slurry are easy to accumulate on the filter element, causing the slurry to block the net; in addition, because one end of the filter element is closed, it cannot be filtered by radial The particles filtered out of the pores are easy to gather in the inner cavity of the filter element and are not easy to take out; and the slurry is a thixotropic fluid. If the flow of the slurry is not smooth due to the blockage of the slurry, the slurry will also have an agglomeration effect, resulting in blockage. The network phenomenon is more serious. Slurry blockage and particles accumulated in the inner cavity of the filter element will require frequent replacement of the filter element. The slurry is easy to leak out when the filter element is replaced, causing environmental pollution; the replaced filter element needs to be cleaned, which will waste manpower and waste slurry; filter element Frequent cleaning will cause the filter element to rust and affect the life of the filter element.

Contents of the invention

The object of the present invention is to provide a filter capable of reducing clogging of the filter element; the object of the present invention is also to provide a filter system using the filter.

In order to solve the above problems, the technical solution of filter among the present invention is:

The filter includes a vertically arranged filter element when in use, the upper opening of the inner hole of the filter element is an open feeding port, and the diameter of the inner hole of the filter element gradually increases from top to bottom.

The shape of the filter element is conical.

The lower orifice of the inner hole of the filter element is an open return port.

The technical scheme of filtration system among the present invention is:

The filtration system includes a filter. The filter includes a vertically arranged filter core. The upper opening of the inner hole of the filter core is an open feeding port, and the diameter of the inner hole of the filter core gradually increases from top to bottom.

The shape of the filter element is conical.

The filtration system also includes a slurry tank, the lower orifice of the inner hole of the filter element is an open return port, and the return port is connected to the slurry tank through a return pipeline, and the return pipeline is provided with Return line valve.

The return pipeline valve is a pneumatic valve.

A feed pipeline is connected to the slurry tank, a filter is connected in series to the feed pipeline, and a feed pipeline valve is arranged downstream of the filter on the feed pipeline.

The feed pipeline valve is a pneumatic valve.

A feed pump is arranged upstream of the filter on the feed pipeline.

The beneficial effects of the present invention are: the filter element is vertically arranged, the inner hole diameter of the filter element gradually increases from top to bottom, and the slurry enters the filter element from the feed port during use, and the particles in the slurry are difficult to accumulate in the filter element due to the action of gravity. The speed of the filter element blocking the net is slowed down, thereby slowing down the filter element blockage, reducing the cleaning frequency of the filter, and reducing the production cost.

Description of drawings

Fig. 1 is the structural representation of an embodiment of filter among the present invention;

Fig. 2 is a structural schematic diagram of an embodiment of the filtration system of the present invention.

detailed description

The embodiment of filtration system is shown in Fig. 1～2 for example: comprise the slurry tank 1 that is connected with feed pipe 8, be provided with filter 10 on feed pipe 8, be provided with feeding pump 2 on the upstream of filter on feed pipe , The feeding pump is a pneumatic diaphragm pump. The filter includes a housing 3 provided with a discharge port 13 and a vertically arranged filter element 4. The discharge port 13 is located at the lower end of the housing. The filter core is composed of a filter screen (orifice plate or cage frame). The upper orifice is an open feed inlet 12, the lower orifice of the inner hole of the filter element is an open return inlet 11, and the filter element has a tapered structure with a small upper part and a larger lower part, so the inner hole diameter of the filter element gradually changes from top to bottom. Large, the feed inlet and outlet of the filter are connected in series on the feed pipeline, and the feed pipeline is provided with a feed pipeline valve 6 downstream of the filter, and the feed pipeline valve is a pneumatic valve. The material return port of the filter is connected with the slurry tank through the material return pipeline 9, and the material return pipeline valve 5 is arranged on the material return pipeline, and the material return pipeline valve is also a pneumatic valve.

The following uses the filtration of slurry in power lithium batteries as an example to describe the use process of this filtration system: when in use, the slurry supply pipeline in the slurry tank is transported to the feeding pump, and enters the feed port of the filter after pressurization , in normal use, the return pipeline valve is closed, and the slurry is filtered by the filter element and then discharged from the discharge port. When there are many particles accumulated in the filter element, close the supply pipeline valve and open the return pipeline valve. The material flows back to the slurry tank with particles through the return pipe, and the backflow of the slurry cleans the filter element, reducing the number of replacement of the filter element by more than 60%. At the same time, the backflow of the slurry keeps the slurry in motion, and the slurry is thixotropic. Fluid, greatly reducing the agglomeration effect of the slurry.

In other embodiments of the filter system: when only the gravity is used to slow down the particles to block the filter element, the lower orifice of the inner hole of the filter element can also be blocked; The pipeline valve and the return pipeline valve can also be electric control valves or mechanical control valves; the pneumatic diaphragm pump can also be replaced by other feeding pumps such as electric impeller pumps; the material outlet can also be located at the upper end of the shell; , at this time, the slurry tank includes a feed slurry tank located above the filter and a return slurry tank located below the filter. The feed pipeline is connected to the feed slurry tank, and the return pipeline is connected to the return slurry tank. On the barrel, the slurry is conveyed in the feed pipeline and the return pipeline respectively by gravity.

The implementation of the filter is described in Figure 1:

The specific structure of the filter is the same as that described in the above-mentioned embodiments of the filter system, and will not be described in detail here.

Claims (5)

1. Filtration system, comprising filter, is characterized in that: filter comprises the filter core of vertical arrangement, the filter core The upper orifice of the inner hole is an open feeding port, and the diameter of the inner hole of the filter element gradually increases from top to bottom, and the diameter of the filter element The shape is conical, the filter system also includes a slurry tank, and the lower orifice of the inner hole of the filter element is an open return material The material return port is connected to the slurry tank through a return pipe, and a return pipe is arranged on the return pipe In normal use, the return pipeline valve is closed, the slurry enters the filter element through the feed port, and the slurry filtered by the filter element The slurry is discharged through the discharge port on the shell. 2. The filtration system according to claim 1, characterized in that: the return pipeline valve is a pneumatic valve. 3. The filtration system according to claim 1, characterized in that: the slurry tank is connected with a feed pipe Road, the filter is connected in series on the feed pipeline, and the downstream of the filter on the feed pipeline is provided with Feed line valve. 4. The filtration system according to claim 3, characterized in that: the valve in the feeding pipeline is a pneumatic valve. 5. The filter system according to claim 3 or 4, characterized in that: the feed pipeline is above the A feeding pump is provided upstream of the filter.