CN204815827U - multi-stage filter - Google Patents

Abstract

The utility model proposes a multi-stage filter capable of filtering for many times, which has a cylindrical filter cup, a standard sand core filter for filtering the liquid flowing out of the cylindrical filter cup, and a filter for the marked sand core. The filter bottle that stores the liquid filtered by the filter also has an enhanced sand core filter. The enhanced sand core filter includes a cylindrical connection cover, a funnel-shaped drainage piece located inside the cylindrical connection cover, and a funnel-shaped drainage cover. The sand core filter layer on the inlet end of the funnel-shaped drainage piece, the inlet end of the funnel-shaped drainage piece is located at the upper end of the upper cylindrical connection cover, the outlet end of the funnel-shaped drainage piece is located at the lower end of the cylindrical connection cover, and the upper end of the cylindrical connection cover is connected to the cylinder The outlet end of the shaped filter cup is connected, the lower end of the cylindrical connection cover is connected with the inlet end of the standard mouth sand core filter, and the outlet end of the standard mouth sand core filter is connected with the bottle mouth of the filter bottle.

Description

multi-stage filter

technical field

The utility model relates to a multistage filter.

Background technique

Glass filter is a common laboratory filtration equipment, which is usually used to remove particles in solvents or suitable for particle removal and degassing filtration of mobile phases in chemical analysis such as HPLC, GC, and AA.

The traditional glass filter is mainly composed of three parts: a cylindrical glass filter cup, a standard sand core filter and a standard plug ground filter bottle. When in use, place the filter membrane with the required pore size on the sand core, and then clamp it with a metal clamp, between the cylindrical glass filter cup and the standard sand core filter, and between the standard sand core filter and the filter bottle The frosted interface can be fastened automatically, and the vacuum pump can be connected to the branch port of the standard sand core filter, so that the water sample in the filter cup can be filtered under low pressure. During the filtration process, the particles in the sample whose size is larger than the pore size of the filter membrane are trapped on the filter membrane, while the filtrate enters the filter bottle. After filtration, the filter membrane and the filtrate are processed and stored separately according to different scientific research requirements.

However, the traditional glass filter can only filter the sample once at a time, and if the water sample needs to be filtered multiple times in a row during the treatment of the water sample, or the particle size of the water body needs to be analyzed and tested Usually, the traditional filter is used to transfer and filter the sample multiple times. This process not only reduces productivity, but also increases the possibility of contamination during sample transfer.

Utility model content

The purpose of the utility model is to propose a multi-stage filter capable of filtering multiple times in view of the technical defects in the prior art.

Adopt following technical scheme for realizing the purpose of the utility model.

The multi-stage filter of technical solution 1 has a cylindrical filter cup, a standard sand core filter for filtering the liquid flowing out of the cylindrical filter cup, and a filter for the liquid filtered by the standard sand core filter. The filter bottle for storage has an enhanced sand core filter, and the enhanced sand core filter includes a cylindrical connection cover, a funnel-shaped drainage member located inside the cylindrical connection cover, and a filter covering the funnel-shaped drainage The sand core filter layer on the inlet end of the funnel-shaped drainage piece, the inlet end of the funnel-shaped drainage piece is located at the upper end of the above-mentioned cylindrical connection cover, and the outlet end of the funnel-shaped drainage piece is located at the lower end of the cylindrical connection cover. The upper end of the cylindrical connection cover is connected to the outlet end of the cylindrical filter cup, the lower end of the cylindrical connection cover is connected to the inlet end of the standard sand core filter, and the outlet of the standard sand core filter The end is connected with the bottle mouth of the filter bottle.

The multi-stage filter of technical solution 2, in the multi-stage filter of technical solution 1, the described enhanced sand core filter has a plurality of, and the plurality of described enhanced sand core filters are respectively connected with the cylinder after being sequentially connected The shape filter cup is connected with the standard sand core filter.

Compared with the prior art, the utility model has the following beneficial effects.

According to the multi-stage filter of technical scheme 1, on the basis of the original filter with a cylindrical filter cup, a standard sand core filter and a filter bottle, an additional filter is added between the cylindrical filter cup and the standard sand core filter. Provided is an enhanced sand core filter, which includes a cylindrical connection cover, a funnel-shaped drainage piece located inside the cylindrical connection cover, and a sand core filter layer covering the inlet end of the funnel-shaped drainage piece.

When using such a filter, the liquid to be filtered flows into the enhanced sand core filter from the cylindrical filter cup first, is filtered by the sand core filter layer of the enhanced sand core filter, and then flows into the standard port sand after being filtered once. Cartridge filter for secondary filtration, and finally into the filter bottle.

For such a filter, its technical adaptability is strong, and it is easy to manufacture. Multi-stage filtration is achieved by adding components instead of internal processing and modification of traditional filters, and mass production can be achieved without innovating the filter production process. In addition, users do not need to purchase new filters, but only need to purchase additional components to achieve multi-stage filtration at low cost.

In addition, multi-stage filtration and separation can be realized at one time, especially in the particle classification analysis experiment of samples, which has great filtration advantages and greatly improves efficiency. At the same time, the present invention can also be used for synchronous pre-filtration and post-filtration to protect the filter membrane with small pore size, improve efficiency, and reduce operating costs; moreover, it is easy to operate, and the various parts of the multi-stage filter are fixedly connected by metal clips ,easy to use.

According to the multi-stage filter of technical solution 2, there are multiple enhanced sand core filters, and the multiple enhanced sand core filters are connected in sequence and respectively connected with the cylindrical filter cup and the standard mouth sand core filter. By arranging a plurality of enhanced sand core filters, more than two times of filtration can be formed, which can further meet the requirement of performing more stages of filtration at one time.

Description of drawings

Fig. 1 is an exploded schematic view showing one embodiment of the multi-stage filter of the present invention.

Fig. 2 is an exploded schematic view showing another embodiment of the multi-stage filter of the present invention.

Detailed ways

Next, the multistage filter which is an Example of this invention is demonstrated based on drawing.

Fig. 1 is an exploded schematic view showing one embodiment of the multi-stage filter of the present invention. Fig. 2 is an exploded schematic view showing another embodiment of the multi-stage filter of the present invention.

As shown in Figure 1, the multi-stage filter of the present utility model has a cylindrical filter cup 10, a marked sand core filter 20 for filtering the liquid flowing out from the cylindrical filter cup 10, and a marked sand core filter for filtering the liquid flowing out from the cylindrical filter cup 10. 20 The filtered liquid is stored in a filter bottle 30 .

In addition, the multi-stage filter also has an enhanced sand core filter 40, and the enhanced sand core filter 40 includes a cylindrical connection cover 41, a funnel-shaped drainage member 42 located inside the cylindrical connection cover 41, and a funnel-shaped drainage piece covered in the funnel-shaped drainage. The sand core filter layer on the inlet end of piece 42.

The inlet end of the funnel-shaped drainage member 42 is located at the upper end of the upper cylindrical connection cover 41, the outlet end of the funnel-shaped drainage member 42 is located at the lower end of the cylindrical connection cover 41, and the upper end of the cylindrical connection cover 41 is connected to the outlet of the cylindrical filter cup 10. End connection, the lower end of the cylindrical connection cover 41 is connected with the inlet end of the standard mouth sand core filter 20, and the outlet end of the standard mouth sand core filter 20 is connected with the bottleneck of the filter bottle 30.

Specifically, the cylindrical filter cup is formed with upper and lower openings, the upper end is the inlet end, and the lower end is the outlet end, and the outlet end of the cylindrical filter cup is connected with the inlet end of the filter with added sand core through a grinding port. The standard port sand core filter, that is, the standard interface sand core filter also has a funnel-shaped drainage piece. The inlet end of the drainage piece set by the sand core filter layer is covered with a connection cover at the outlet end of the drainage piece. A suction nozzle is formed on the wall, and the lower end of the drainage member is connected with the filter bottle.

According to the above-mentioned multi-stage filter, on the basis of the original filter with a cylindrical filter cup, a standard sand core filter and a filter bottle, an incremental filter is added between the cylindrical filter cup and the standard sand core filter. A grade sand core filter, which includes a cylindrical connection cover, a funnel-shaped drainage member located inside the cylindrical connection cover, and a sand core filter layer covering the inlet end of the funnel-shaped drainage member.

When using such a filter, the liquid to be filtered flows into the enhanced sand core filter from the cylindrical filter cup first, is filtered by the sand core filter layer of the enhanced sand core filter, and then flows into the standard port sand after being filtered once. Cartridge filter for secondary filtration, and finally into the filter bottle.

For such a filter, its technical adaptability is strong, and it is easy to manufacture. Multi-stage filtration is achieved by adding components instead of internal processing and modification of traditional filters, and mass production can be achieved without innovating the filter production process. In addition, users do not need to purchase new filters, but only need to purchase additional components to achieve multi-stage filtration at low cost.

In addition, multi-stage filtration and separation can be realized at one time, especially in the particle classification analysis experiment of samples, which has great filtration advantages and greatly improves efficiency. At the same time, the present invention can also be used for synchronous pre-filtration and post-filtration to protect the small-diameter filter membrane, improve efficiency, and reduce operating costs. Moreover, it is easy to operate, each part of the multi-stage filter is fixedly connected by metal clips, and the operation is simple.

In addition, as shown in FIG. 2 , there are multiple enhanced sand core filters, and the multiple enhanced sand core filters are connected in sequence and respectively connected with the cylindrical filter cup and the standard sand core filter. By arranging a plurality of enhanced sand core filters, more than two times of filtration can be formed, which can further meet the requirement of performing more stages of filtration at one time.

In addition, the multi-stage filter of the present invention can be formed by combining the above-mentioned various structures, and can also exert the above-mentioned effects.

The multi-stage filter according to the preferred embodiment of the present invention has been described above. However, the present invention is not limited to the specific embodiment described above, and various modifications and changes can be made without departing from the scope of the claims. The present invention includes various modifications and changes within the scope of the claims.

Claims (2)

1. a multistage filter, the mark mouth sand core filter have tubular filter bowl, filtering to the liquid flowed out from described tubular filter bowl and the filter flask stored the liquid after being filtered by described mark mouth sand core filter, is characterized in that,

Have and increase level sand core filter, described increasing level sand core filter comprises cylindricality and connects cover, is positioned at the infundibulate drainage part that described cylindricality connects the inside of cover and the core filtering layer covered on the arrival end of described infundibulate drainage part,

The arrival end of described infundibulate drainage part is positioned at described cylindricality and connects the upper end of covering, the port of export of described infundibulate drainage part is positioned at described cylindricality and connects the lower end of covering, the upper end that described cylindricality connects cover is connected with the port of export of described tubular filter bowl, the lower end that described cylindricality connects cover is connected with the arrival end of described mark mouth sand core filter, and the port of export of described mark mouth sand core filter is connected with the bottleneck of described filter flask.

2. multistage filter according to claim 1, is characterized in that, described increasing level sand core filter has multiple, is connected respectively after multiple described increasing level sand core filter connects successively with described tubular filter bowl and described mark mouth sand core filter.