CN205073777U - Filtering device - Google Patents

Abstract

The utility model provides a filter device, which comprises a filter cartridge, a first flange and a second flange arranged at both ends of the filter cartridge, wherein the first flange is connected with a liquid inlet pipe, and the second flange is connected with a There is a liquid outlet pipe, and the liquid inlet pipe and the liquid outlet pipe are respectively communicated with the filter cartridge; it also includes: at least two filter layers fixedly arranged in the filter cartridge and sealingly connected with the filter cartridge, and pointing to the second filter cartridge along the first flange. In the direction of the flange, the filtration precision of the filter layer gradually decreases; wherein, each layer of filter layer includes microfiltration membranes stacked along the direction of the first flange pointing to the second flange, a screen mesh and a supporting mesh sieve plate. In the above technical solution, by adopting filter layers with different filtration precisions in the filter cartridge, substances of different sizes can be realized in the filter cartridge, and the filtering effect is improved. At the same time, different filter layers are arranged in the same filter cartridge , simplifies the whole device and reduces the leakage.

Description

a filter device

technical field

The utility model relates to the technical field of filtering devices, in particular to a filtering device.

Background technique

Particulate matter is strictly controlled in many liquid fine chemical materials and liquid electronic chemicals. During the filtration process of liquid electronic display materials, such as: photoresist, mixed liquid crystal, alignment (PI) liquid, etc., solid particles, dust and other particles are intercepted and filtered by using one after another filter devices and filter membranes. To control the number of dust particles of various sizes in the product, improve product quality, thereby reducing the impact of the presence of particles on the display effect.

However, due to the large number of filtering equipment links, the number of operators, operating procedures and equipment procurement costs are increased. At the same time, because high-purity liquid electronic materials will inevitably contact materials such as valves and sealing tapes in the connection parts of multi-channel filtration links, it will increase the quality risk of the product. At the same time, it will increase the loss in each filtration link of the product, and also increase the risk of product leakage. Therefore, the traditional multi-channel filtration process and filtration device have more disadvantages.

Utility model content

The utility model provides a filtering device, which is used for improving the filtering efficiency.

The utility model provides a filtering device, which comprises a filter cartridge, a first flange and a second flange arranged at both ends of the filter cartridge, wherein the first flange is connected with a liquid inlet pipe, and the The second flange is connected with a liquid outlet pipe, and the liquid inlet pipe and the liquid outlet pipe are respectively communicated with the filter cartridge; also includes:

At least two filter layers fixedly arranged in the filter cartridge and sealedly connected with the filter cartridge, and along the direction where the first flange points to the second flange, the filtration precision of the filter layer gradually decreases; wherein Each filter layer includes microfiltration membranes stacked along the direction from the first flange to the second flange, a screen and a supporting mesh screen.

In the above technical solution, by adopting filter layers with different filtration precisions in the filter cartridge, substances of different sizes can be realized in the filter cartridge, and the filtering effect is improved. At the same time, different filter layers are arranged in the same filter cartridge , simplifies the entire equipment, and reduces the number of workers who need to be monitored; in addition, the liquid is filtered in the same filter cartridge, reducing the situation of leakage.

Preferably, along the direction from the first flange to the second flange, the pore size of the mesh of the filter membrane decreases gradually. Filter impurities of different sizes.

Preferably, the microfiltration membrane and the screen are hermetically connected to the filter cartridge through sealing gaskets. Improve filtering effect.

Preferably, the gasket is made of polytetrafluoroethylene. Has good sealing.

Preferably, the support mesh sieve plates are all 316L stainless steel sieve plates, and the aperture openings of the support mesh sieve plates are all 1-2 mm, and the hole interval is 1-2 mm. Has a good supporting effect.

Preferably, the screens are all stainless steel screens, and the filter apertures on the stainless steel screens are between 50 mesh and 2000 mesh. Has a good filtering effect.

Preferably, the first flange is provided with a threaded hole, and the liquid inlet pipe is screwed to the threaded hole;

The second flange is provided with a threaded hole, and the liquid outlet pipe is screwed into the threaded hole.

Preferably, the filter cartridge is made of polytetrafluoroethylene or 316L stainless steel.

Preferably, the side of the second flange facing the filter cartridge is provided with a plurality of support columns, and the filter layer is fixed on the support columns through connectors.

Description of drawings

Fig. 1 is the structural representation of the filtering device that the utility model embodiment provides;

Fig. 2 is an exploded schematic view of the filter device provided by the embodiment of the present invention.

Reference signs:

1-Inlet pipe 2-First flange 3-Filter cartridge

4-first filter layer 41-sealing gasket 42-first microfiltration membrane

43-the first sieve 44-the first supporting mesh sieve plate

5-second filter layer 51-second microfiltration membrane 52-second screen

53-Second supporting mesh sieve plate 6-Second flange 7-Outlet pipe

detailed description

Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the utility model, and are not intended to limit the utility model.

Referring to FIG. 1 and FIG. 2 together, FIG. 1 is a schematic structural diagram of a filter device provided by an embodiment of the utility model; FIG. 2 is an exploded schematic diagram of a filter device provided by an embodiment of the utility model.

The embodiment of the utility model provides a filter device, which includes a filter cartridge 3, a first flange 2 and a second flange 6 arranged at both ends of the filter cartridge 3, wherein the first flange 2 is connected with a liquid inlet The pipe 1 and the second flange 6 are connected with a liquid outlet pipe 7, and the liquid inlet pipe 1 and the liquid outlet pipe 7 are respectively communicated with the filter cartridge 3; it also includes:

At least two layers of filter layers fixedly arranged in the filter cartridge 3 and hermetically connected with the filter cartridge 3, and along the direction of the first flange 2 pointing to the second flange 6, the filtration precision of the filter layer gradually decreases; wherein, each layer of filter The layers include microfiltration membranes stacked along the direction from the first flange 2 to the second flange 6, a screen and a supporting mesh screen.

In the above-mentioned embodiment, by adopting the filter layers with different filtration accuracy in the filter cartridge 3, substances of different sizes can be realized in the filter cartridge 3, and the filtering effect is improved. The filter layer simplifies the whole device and reduces the number of workers who need to be monitored; in addition, the liquid is filtered in the same filter cartridge 3, which reduces the situation of leakage.

In order to facilitate the understanding of the filter device provided by the embodiment of the present invention, its structure will be described in detail below with reference to the accompanying drawings.

With reference to Fig. 1 and Fig. 2, the filter device provided by the present embodiment is a cylindrical structure, and its main structure includes a filter cartridge 3 with openings at both ends. flange 2 and the second flange 6, wherein the first flange 2 and the second flange 6 are respectively connected with the liquid inlet pipe 1 and the liquid outlet pipe 7, specifically, the first flange 2 is provided with a threaded hole, and the inlet The liquid pipe 1 is spirally connected with the threaded hole, and the second flange 6 is provided with a threaded hole, and the liquid outlet pipe 7 is spirally connected with the threaded hole. One side of the cylinder 3 is provided with a plurality of support columns, and the filter layer is fixed on the support columns through connectors.

In specific use, the filtered liquid enters the liquid inlet pipe 1 through positive pressure, and the liquid inlet pipe 1 is connected to the threaded hole in the middle of the upper first flange 2, so the filtered liquid enters the filter cartridge 3 and passes through the filter cartridge The filter layer set in 3 is used for filtration. Under positive pressure, the liquid flows from top to bottom. After the filtration is completed, the liquid outlet pipe 7 connected to the threaded hole in the middle of the second flange 6 flows out into the packaging bottle containing the liquid. middle.

In this embodiment, at least two layers of filter layers are provided in the filter cartridge 3, and along the direction from the first flange 2 to the second flange 6, the filtration accuracy of the filter layer gradually decreases, that is, close to the first flange 2 The filter layer of the first flange 2 filters coarser substances, and the farther away from the filter layer of the first flange 2, the smaller the impurities filtered. In order to facilitate the understanding of the filter layer provided by the embodiment of the present invention, the following description will be made by taking two filter layers arranged in the filter cartridge 3 as an example.

As shown in Figure 2, the two layers of filter layers are respectively the first filter layer 4 and the second filter layer 5, wherein the first filter layer 4 includes: the first microfiltration membrane 42, the first screen cloth 43, the first support net Hole sieve plate 44 ; the second filter layer 5 includes a second microfiltration membrane 51 , a second screen 52 , and a second support mesh sieve plate 53 . In specific arrangement, as shown in FIG. 2 , along the direction from the first flange 2 to the second flange 6 , the first filter layer 4 and the second filter layer 5 are stacked. Continuing to refer to Fig. 2, its specific arrangement is: the first microfiltration membrane 42, the first screen cloth 43, the first support mesh sieve plate 44, the second microfiltration membrane 51, the second screen cloth 52, the second support Mesh sieve plate 53. Wherein, along the direction that the first flange 2 points to the second flange 6, the aperture of the mesh of the filter membrane decreases gradually, that is, the diameter of the mesh of the first microfiltration membrane 42 is smaller than the diameter of the mesh of the second microfiltration membrane 51. Diameter, so that when the liquid to be filtered flows into the filter cartridge 3 from the first flange 2, the impurities in the liquid are filtered in order from large to small.

In addition, as a preferred embodiment, in order to improve the filtering effect. Preferably, the first filter layer 4 includes a sealing gasket 41, so as to seal the position where the filter layer contacts the inner wall of the filter cartridge 3, specifically, the sealing gasket 41 is arranged on the first filter layer 4 facing the first flange 2 side. As shown in FIG. 2 , the first microfiltration membrane 42 and the first screen 43 in the first filter layer 4 are sealed and connected to the inner wall of the filter cartridge 3 through the sealing gasket 41 . The sealing gasket 41 can be made of different materials when specifically selected. Preferably, the sealing gasket 41 is a sealing gasket 41 made of polytetrafluoroethylene. It has a good sealing effect.

The support mesh sieve plate and screen mesh can be made of different materials, such as stainless steel, iron, aluminum and other materials. As a specific embodiment, the above-mentioned support mesh sieve plates are all 316L stainless steel sieve plates, and the aperture openings of the support mesh sieve plates are all 1-2 mm, and the hole interval is 1-2 mm. The screens are all stainless steel screens, and the filter apertures on the stainless steel screens are between 50 mesh and 2000 mesh. The filter cartridge 3 is made of polytetrafluoroethylene or 316L stainless steel. Therefore, the supporting mesh sieve plate has good supporting capacity, and the filter cartridge 3 has good structural strength.

Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. In this way, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and equivalent technologies thereof, the utility model is also intended to include these modifications and variations.

Claims (9)

1. A filtering device, characterized in that, a filter cartridge, a first flange and a second flange arranged at both ends of the filter cartridge, wherein the first flange is connected with a liquid inlet pipe, and the second A liquid outlet pipe is connected to the flange, and the liquid inlet pipe and the liquid outlet pipe are respectively communicated with the filter cartridge; it also includes: At least two filter layers fixedly arranged in the filter cartridge and sealedly connected with the filter cartridge, and along the direction where the first flange points to the second flange, the filtration precision of the filter layer gradually decreases; wherein Each filter layer includes microfiltration membranes stacked along the direction from the first flange to the second flange, a screen and a supporting mesh screen. 2. The filter device according to claim 1, characterized in that, along the direction from the first flange to the second flange, the pore diameter of the mesh of the filter membrane decreases gradually. 3. The filtering device according to claim 2, characterized in that, the microfiltration membrane and the screen are sealedly connected with the filter cartridge through a sealing gasket. 4. The filtering device according to claim 3, wherein the sealing gasket is a sealing gasket made of polytetrafluoroethylene material. 5. The filter device according to claim 1, wherein the supporting mesh sieve plates are all made of 316L stainless steel, and the aperture openings of the supporting mesh sieve plates are all 1 to 2 mm, Hole spacing is 1 ~ 2mm. 6 . The filtering device according to claim 1 , wherein the screens are all stainless steel screens, and the filter apertures on the stainless steel screens are between 50 mesh and 2000 mesh. 7 . 7. The filter device according to any one of claims 1 to 6, characterized in that, the first flange is provided with a threaded hole, and the liquid inlet pipe is screwed to the threaded hole; The second flange is provided with a threaded hole, and the liquid outlet pipe is screwed into the threaded hole. 8. The filter device according to claim 7, wherein the filter cartridge is made of polytetrafluoroethylene or 316L stainless steel. 9. The filter device according to claim 7, wherein a plurality of support columns are arranged on the side of the second flange facing the filter cartridge, and the filter layer is fixed on the support columns through connectors. .