CN111214878A

CN111214878A - Filter

Info

Publication number: CN111214878A
Application number: CN201811416272.4A
Authority: CN
Inventors: 郭江明
Original assignee: Hangzhou Cobetter Filtration Equipment Co Ltd
Current assignee: Hangzhou Cobetter Filtration Equipment Co Ltd
Priority date: 2018-11-26
Filing date: 2018-11-26
Publication date: 2020-06-02

Abstract

The filter provided by the invention comprises an inlet, an outlet, an upstream exhaust port, a filter element, an upper shell and a lower shell, wherein the filter element is fixed in the upper shell; and a plurality of flow guide ribs are respectively arranged on the inner walls of the upper shell and the lower shell, and guide the bubbles in the upper shell to gather and discharge to the vicinity of the inlet and the upstream exhaust port. In addition, a downstream exhaust port is arranged on the side wall of the bottom end of the lower shell, and a plurality of flow guide ribs on the inner wall of the lower shell can guide bubbles in the lower shell to gather and exhaust to the vicinity of the downstream exhaust port; or the top of the upper shell is connected with a buffer container to stabilize the fluid flow and reduce the generation of bubbles. Compared with the prior art, the filter provided by the invention has a better exhaust effect and provides a liquid crystal product with better quality.

Description

Filter

Technical Field

The invention belongs to the technical field of filtration, and particularly relates to a filter which is good in exhaust effect and can reduce bubble generation.

Background

Liquid crystals are very important materials in the electro-optical display technology, and the cleanliness thereof has an important influence on the display performance of electronic components. In order to meet the cleanliness requirement of the electronic industry, the liquid crystal needs to be filtered before use to remove impurities contained in the liquid crystal. Furthermore, control of entrained gas in the liquid crystal is also important because bubbles along with clean liquid crystal reach downstream electronic components, which can cause imaging defects.

Fig. 1 shows a conventional filter for liquid crystal filtration, in which a liquid crystal raw material liquid inlet 1 is formed at the top end of a housing 4 of the filter, a clean liquid crystal outlet 2 is formed at the bottom of the housing 4, an exhaust port 3 is formed in the side wall of the housing 4 near the top end, a filter element is located inside the filter, and a certain space is left between the upper end of the filter element and the top of the housing 4 of the filter, corresponding to the exhaust port 3, to facilitate exhaust. However, a dead angle 5 exists at the joint of the top of the housing 4 and the side wall of the housing 4 of the filter, after the filter is used for a period of time, gas is easy to stay at the dead angle 5, the gas stays in the filter, so that liquid crystal to be filtered is difficult to enter the filter again, the filtering rate is reduced, the liquid level of the liquid crystal in the filter is reduced, and the filtering performance is poor.

The utility model discloses a utility model patent application No. 201821758888.5 discloses a filter for liquid crystal processing, as shown in fig. 2, the top internal surface of casing 4 of this filter is established to inclined plane 41 to eliminated the dead angle of the inside of filter, gaseous has lost the detention space, plays the effect that reduces gaseous detention on the one hand, and on the other hand, after filtering a period, stops the feed liquor, the slope, rock the filter, this inclined plane 41 also is favorable to gaseous gathering near entry 1, and discharge by entry 1. Thus, the filter does provide better venting than the filter shown in fig. 1, but the venting is not optimal. Since the air bubbles cannot be collected near the exhaust port 3 as expected when the filter is tilted or shaken, the improvement of the exhaust effect is limited, and the filter cannot reduce the generation of air bubbles from the source.

Therefore, it is necessary to improve the structure of the filter, further improve the exhaust effect, guide the gas to gather and discharge near the exhaust port, improve the exhaust function of the filter, or reduce the generation of bubbles.

Disclosure of Invention

In order to further improve the exhaust effect of the liquid crystal filter, the invention provides a filter with an improved structure. The filter comprises an inlet, an outlet, an upstream exhaust port, a filter element, an upper shell and a lower shell, wherein the filter element is fixed in the upper shell, and the upper shell and the lower shell are connected into a whole through welding.

The inlet is positioned at the top end of the upper shell, and the bottom end of the inlet extends downwards to the interior of the upper shell.

The outlet is positioned at the bottom end of the lower shell and is communicated with the fluid inside the lower shell.

The upstream exhaust port is located on the side wall of the upper housing and near the top end of the upper housing.

The inner surface of the top of the upper shell is an inclined surface, the inclined surface is inclined from the bottom end of the inlet to the side wall of the upper shell, an opening is formed in the center of the inclined surface, and the opening in the center of the inclined surface is communicated with the inlet.

The inner wall of the upper shell is provided with a plurality of first flow guide ribs at equal intervals, and the inner wall of the lower shell is provided with a plurality of second flow guide ribs at equal intervals.

The first flow guide rib and the second flow guide rib are respectively of a convex column structure protruding out of the inner walls of the upper shell and the lower shell, and the two flow guide ribs are respectively as high as the upper shell and the lower shell.

The top of the cartridge is liquid-tight.

The filter element is characterized in that pores are uniformly formed in the side wall of the filter element, and a filter membrane is arranged on the periphery of the side wall.

The bottom of the filter element is provided with a liquid outlet.

Preferably, the side wall of the bottom end of the lower shell is also provided with a downstream exhaust port.

More preferably, a buffer container is connected to the top of the upper shell.

The filter provided by the invention is characterized in that a plurality of first flow guide ribs are arranged on the inner wall of the upper shell at equal intervals, the arrangement of the first flow guide ribs reduces the internal volume of the upper shell of the filter, on one hand, the retention of liquid is reduced, and gas is forced to move to the space near the open inlet and the upstream exhaust port, on the other hand, the convex column-shaped first flow guide ribs can also guide bubbles to move upwards, gather to the vicinity of the inlet and the upstream exhaust port, and are exhausted from the inlet and the upstream exhaust port. The specific exhaust method of the filter is that after filtering for a period of time, liquid feeding is stopped, the filter is inclined and shaken, and gas is guided by the first flow guide rib to gather near the inlet and the upstream exhaust port and is exhausted through the inlet and the upstream exhaust port.

Furthermore, the downstream exhaust port arranged on the side wall of the bottom end of the lower shell of the filter also plays a role in improving the exhaust effect of the filter. After filtering for a period of time, the upper shell and the lower shell of the filter are turned upside down, so that bubbles in the lower shell are gathered near the downstream exhaust port, and the flow guide ribs on the inner wall of the lower shell further guide the bubbles to move near the downstream exhaust port, so that the bubbles in the lower shell are discharged, the bubbles carried in the clean filtrate can be reduced, and the quality of a liquid crystal product is improved.

Furthermore, a buffer container is arranged at the top end of the upper shell of the filter, and the unfiltered liquid is temporarily stored in the buffer container before entering the upper shell of the filter, so that when the unfiltered liquid is sucked in by vacuumizing at the downstream of the filter, the flow speed of the unfiltered liquid flowing into the upper shell from the buffer container is more stable, the fluctuation of fluid flow is not easy to occur, and the generation of air bubbles is reduced.

In summary, the filter provided by the invention has the following functions: the air bubbles are guided to gather and discharge near the upstream and downstream exhaust ports, and meanwhile, the upstream and downstream exhaust is realized and the generation of the air bubbles is reduced, so that compared with the prior art, the filter provided by the invention has a better exhaust effect and can provide a liquid crystal product with better quality.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a cross-sectional view of a filter provided in the prior art

FIG. 2 is a cross-sectional view of a filter according to the second prior art

FIGS. 3 to 4 are cross-sectional views of filters provided in example 1 of the present invention

FIG. 5 is a cross-sectional view of a filter provided in example 2 of the present invention

FIG. 6 is a front view of a filter according to embodiment 3 of the present invention

In FIGS. 1-2, 1-inlet, 2-outlet, 3-vent, 4-shell, 41-bevel, 5-dead-end;

in FIGS. 3-6, 10-inlet, 20-outlet, 30-upstream vent, 60-cartridge, 61-membrane, 62-outlet, 70-upper housing, 71-ramp, 72-opening, 73-first rib, 80-lower housing, 81-second rib, 90-downstream vent, 100-buffer vessel.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the structure of the filter provided by the present invention is further described in detail below with reference to fig. 3-6.

Figures 3 and 4 correspond to the present invention and provide a filter of construction comprising: the filter comprises an inlet 10, an outlet 20, an upstream exhaust port 30, a filter element 60, an upper shell 70 and a lower shell 80, wherein the filter element 60 is fixed inside the upper shell 70, and the upper shell 70 and the lower shell 80 are connected into a whole through welding.

The inlet 10 is located at the top end of the upper housing 70, and the bottom end of the inlet 10 extends downward to the interior of the upper housing 70.

The outlet 20 is located at the bottom end of the lower housing 80 and is in fluid communication with the interior of the lower housing 80.

The upstream exhaust port 30 is located on a side wall of the upper housing 70 and near the top end of the upper housing 70.

The inner surface of the top of the upper housing 70 is a slope 71, the slope 71 is inclined from the bottom end of the inlet 10 toward the sidewall of the upper housing 70, an opening 72 is formed at the center of the slope 71, and the opening 72 at the center of the slope 71 is communicated with the inlet 10.

A plurality of first flow guiding ribs 73 are arranged on the inner wall of the upper shell 70 at equal intervals, and a plurality of second flow guiding ribs 81 are arranged on the inner wall of the lower shell 80 at equal intervals.

The first flow guiding rib 73 and the second flow guiding rib 81 are respectively of convex column structures protruding out of the inner walls of the upper shell 70 and the lower shell 80, and are respectively as high as the upper shell 70 and the lower shell 80.

The top of the cartridge 60 is liquid-tight.

The side wall of the filter element 60 is evenly provided with holes, and the periphery of the side wall is provided with a filter membrane 61.

The bottom of the filter element 60 is provided with a liquid outlet 62.

This filter sets up many water conservancy diversion muscle one 73 on the inner wall of last casing 70 at equidistant, and the setting of water conservancy diversion muscle one 73 has reduced the inside volume of the last casing 70 of filter, reduces the detention of liquid on the one hand, still forces gaseous near the spacious entry 10 of being more and the upstream gas vent 30 space motion, and on the other hand, convex column shape water conservancy diversion muscle one 73 can also guide bubble upward movement, to gathering near entry 10 and upstream gas vent 30 to discharge by entry 10 and upstream gas vent 30. The specific exhaust method of the filter is that after filtering for a period of time, liquid feeding is stopped, the filter is inclined and shaken, and gas is guided by the first flow guide rib 73 to gather near the inlet 10 and the upstream exhaust port 30 and is exhausted through the inlet 10 and the upstream exhaust port 30.

As another embodiment of the present invention, as shown in fig. 5, a downstream exhaust port 90 is further provided on a sidewall of the bottom end of the lower case 80 of the filter.

The downstream exhaust port 90 provided on the side wall of the bottom end of the lower filter case 80 also serves to improve the exhaust effect of the filter. After filtering for a period of time, the upper shell 70 and the lower shell 80 of the filter are turned upside down, so that the bubbles in the lower shell 80 are gathered near the downstream exhaust port 90, and the second flow guide rib 81 on the inner wall of the lower shell 80 can guide the bubbles to move towards the downstream exhaust port 90, thereby discharging the bubbles in the lower shell 80, reducing the bubbles entrained in the clean filtrate and improving the quality of liquid crystal products.

As a third embodiment of the present invention, as shown in fig. 6, a buffer container 100 is further attached to the top of the upper case 70 of the filter.

The top end of the upper shell 70 of the filter is also provided with a buffer container 100, and the unfiltered liquid is temporarily stored in the buffer container 100 before entering the upper shell 70 of the filter, so that when the unfiltered liquid is sucked in by vacuumizing at the downstream of the filter, the flow speed of the unfiltered liquid flowing into the upper shell 70 from the buffer container 100 is more stable, the fluctuation of fluid flow is not easy to occur, and the generation of bubbles is favorably reduced.

Compared with the prior art, the filter provided by the invention has a better exhaust effect and can provide a liquid crystal product with better quality.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and inventive features disclosed herein.

Claims

1. A filter comprising an inlet, an outlet, an upstream vent, a filter element, an upper housing and a lower housing, wherein: the filter element is fixed in the upper shell, and the upper shell and the lower shell are connected into a whole by welding; the inner wall of the upper shell is provided with a plurality of first flow guide ribs at equal intervals, and the inner wall of the lower shell is provided with a plurality of second flow guide ribs at equal intervals.

2. The filter of claim 1, wherein the first flow guiding rib and the second flow guiding rib are respectively convex column structures protruding from the inner walls of the upper shell and the lower shell, and are respectively equal in height to the upper shell and the lower shell.

3. A filter as claimed in claim 1 or claim 2, wherein the inlet is located at the top end of the upper housing, the bottom end of the inlet extending downwardly into the interior of the upper housing.

4. A filter as claimed in claim 1 or claim 2, wherein the outlet is located at the bottom end of the lower housing and is in fluid communication with the interior of the lower housing.

5. The filter of claim 1 or 2 wherein the upstream vent is located in the side wall of the upper housing and adjacent the top end of the upper housing.

6. A filter as claimed in claim 1 or claim 2, wherein the top of the filter element is liquid-tight, the side walls of the filter element are uniformly provided with apertures, the periphery of the side walls is provided with a filter membrane, and the bottom of the filter element is provided with a liquid outlet.

7. The filter of claim 2 wherein the bottom end of the lower housing further includes a downstream exhaust port in a sidewall thereof.

8. The filter of claim 1, 2 or 7 wherein a surge tank is attached to the top of the upper housing.

9. A method of exhausting a filter according to claim 1 or claim 2 wherein the filter is tilted and shaken after filtering for a period of time, and the ribs direct gas to collect adjacent the inlet and the upstream exhaust for discharge through the inlet and the upstream exhaust.

10. A method of exhausting a gas from a filter according to claim 7 wherein the filter is filtered for a period of time and the feed is stopped, the upper and lower housings of the filter are inverted to collect gas bubbles in the lower housing adjacent the downstream exhaust port, and gas bubbles are exhausted from the lower housing through the downstream exhaust port.