Disc filter

Abstract

The utility model provides a disc filter which comprises an upper shell, a lower shell and a filter membrane, a plurality of bosses are arranged on the side edge of the upper shell, the sides, away from the lower shell, of the bosses are arranged in a step shape, each step comprises a first table top and a second table top, and the side, close to the upper shell, of the lower shell extends outwards to form a limiting flange used for limiting sideslip of the bosses. The limiting flange is provided with a clamping hook matched with the boss, the clamping hook abuts against the first table face or the second table face to enable the upper shell and the lower shell to be connected in a clamped mode, the clamping hook and the boss are staggered to enable the upper shell and the lower shell to be disengaged from being connected in a clamped mode, the diameter of the filter membrane is the same as the inner diameter of the limiting flange, and the upper shell and the lower shell are fixed through the covered edge to form an integrated structure. According to the disc filter disclosed by the utility model, the diameter of the filter membrane is set to be the same as the inner diameter of the limiting flange of the lower shell, the filter membrane is pressed and fixed by clamping the upper shell and the lower shell, and the filter membranes with different thicknesses are mounted and fixed by propping the clamping hook against the first table top or the second table top.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a disc filter. Background Art

[0002] Disc filter is a filtering device used to process small flow rates. It is widely used in laboratory research, pharmaceutical engineering, water treatment, waste gas separation, biotechnology and other fields. It can accurately control the filtration accuracy and filtration volume and achieve aseptic operation.

[0003] In the existing technology, conventional filter membranes are prone to displacement and dislocation after being pressurized in the filter cavity, that is, they are not firmly fixed inside the cavity, affecting the use of the filter, and the filter cannot take into account membrane materials with different wall thicknesses. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a disc filter, aiming to solve the technical problems in the existing technology that filter membranes of different wall thicknesses cannot be taken into account and the filter membranes are not firmly fixed inside the filter.

[0005] In order to achieve the above purpose, the present invention is implemented through the following technical solutions:

[0006] The filter element is connected with the filter element of the filter element, and the filter element is connected with the filter element of the filter element.

[0007] Compared with the prior art, the beneficial effect of the present invention lies in: according to the above-mentioned design scheme, a boss is provided on the upper shell of the filter, and a hook is provided on the lower shell to cooperate with the boss of the upper shell, and the upper and lower shells are clamped together by the cooperation of the boss and the hook, and then the filter membrane diameter is set to be the same as the inner diameter of the limiting retaining edge of the lower shell, so that the edge of the filter membrane can be pressed by the abutting parts of the upper and lower shells, and then the filter membrane is firmly pressed between the upper and lower shells by clamping. In order to facilitate the clamping of filter membranes of different thicknesses between the upper and lower shells, the surfaces where the boss and the hook abut against each other are set to a step shape, and the hook abuts against the first table surface of different heights or the first table surface to clamp filter membranes of different thicknesses. Finally, under the action of the edging, the fitting edges of the upper shell, the lower shell and the filter membrane are airtightly fixed.

[0008] According to one aspect of the above technical solution, the upper shell includes a pipe portion and a cover body connected to the pipe portion, the cover body includes a disc portion connected to the pipe portion, and an abutment portion connected to one end of the disc portion away from the pipe portion, and the boss is arranged on the abutment portion.

[0009] According to one aspect of the above technical solution, an exhaust hole is provided on the upper side of the pipe portion, the exhaust hole is arranged close to the disc portion, and the exhaust hole is communicated with the disc portion.

[0010] According to one aspect of the above technical solution, one side of the upper shell and the lower shell relative to each other extends outward to form a protrusion, and the lower shell is provided with a groove that cooperates with the protrusion.

[0011] According to one aspect of the above technical solution, a plurality of notches are provided through the connection between the lower shell and the limiting rib.

[0012] According to one aspect of the above technical solution, the inner side wall of the lower shell is provided with guide ribs for supporting the filter membrane.

[0013] According to one aspect of the above technical solution, the inner side wall of the upper shell is provided with a plurality of reinforcing ribs for limiting the filter membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a cross-sectional view of a disc filter in one embodiment of the present utility model;

[0015] Figure 2 This is a cross-sectional view of a disc filter in one embodiment of the present utility model;

[0016] Figure 3 The upper and lower perspectives of the upper shell in one embodiment of the utility model are shown;

[0017] Figure 4 This is a structural diagram of the lower shell in one embodiment of the utility model;

[0018] Explanation of the main component symbols: 1-upper shell, 11-pipe part, 12-dish part, 13-abutment part, 14-bump, 15-reinforcement rib, 2-lower shell, 21-guide rib, 22-groove, 3-filter membrane, 4-boss, 41-first table, 42-second table, 5-limiting rib, 51-notch, 6-hook, 7-exhaust hole, 8-edge;

[0019] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0020] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The drawings illustrate several embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] See also Figures 1 to 2, a disc filter provided by an embodiment of the present invention comprises an upper shell 1 and a lower shell 2 which are matched with each other, wherein the upper shell 1 is provided with a plurality of bosses 4, specifically, the upper shell 1 comprises a pipe portion 11, and a cover body connected to the pipe portion 11, the cover body comprises a disc portion 12 connected to the pipe portion 11, and an abutment portion 13 connected to one end of the disc portion 12 away from the pipe portion 11, the boss 4 is provided on the abutment portion 13; and a limiting rib 5 is provided on the lower shell 2, and a hook 6 is provided on the limiting rib 5 to form a card connection with the boss 4. The upper shell 1 can rotate inside the lower shell 2 under the limitation of the limiting rib 5. A filter membrane 3 is installed between the upper shell 1 and the lower shell 2. By rotating the upper shell 1 and the lower shell 2, the boss 4 on the upper shell 1 and the hook 6 on the lower shell 2 are abutted against each other, so that the upper shell 1 and the lower shell 2 are clamped to each other, thereby pressing and fixing the filter membrane 3. It should be noted that in order to facilitate uniform force after the upper shell 1 and the lower shell 2 are clamped, multiple bosses 4 are arranged in an array on the edge of the upper shell 1, and the number is at least three or more. It can be understood that the hooks 6 are also arranged in an array, and the number is the same as the boss 4, but it should be noted that the width of the hooks 6 should be less than or equal to half the width of the boss 4, and the gap between the zero-phase hooks 6 should be greater than the width of the boss 4.

[0024] See also Figure 3 In order to enable the present invention to compress and fix filter membranes 3 of different thicknesses, the side of the boss 4 in contact with the hook 6 is set to a step shape, wherein the step includes a first table 41 and a second table 42, and the first table 41 is higher than the second table 42. When the first table 41 abuts against the hook 6, the filter membrane 3 with a smaller thickness can be compressed between the upper shell 1 and the lower shell 2; when the second table 42 abuts against the hook 6, the filter membrane 3 with a larger thickness can be compressed between the upper shell 1 and the lower shell 2. In addition, in order to fix the filter membrane 3 more firmly, the diameter of the filter membrane 3 is set to be the same as the inner diameter of the limiting rib 5, so that the edge of the filter membrane 3 can be compressed and fixed by the edge of the abutting portion 13 where the upper shell 1 and the lower shell 2 abut against each other.

[0025] In this embodiment, an exhaust hole 7 for discharging air inside the filter is provided on one side of the upper shell 1, wherein a certain curvature is provided on one side of the inner wall of the disc portion 12. This design not only provides a buffer space inside the filter, especially when filtering liquid, it is beneficial to fully wet the filter membrane 3, thereby improving the utilization rate of the filter membrane 3. At the same time, due to the certain curvature, when filtering liquid, the interior is beneficial to the separation of gas and liquid. The separated gas gathers at the highest point in the middle of the disc portion 12. In this way, it is only necessary to connect the exhaust hole 7 with the highest point of the disc portion 12 to discharge the gas retained inside and realize the separation of internal gas and liquid. Specifically, an exhaust hole 7 is provided on the upper side of the pipe portion 11, and the exhaust hole 7 is arranged close to the disc portion 12, and the exhaust hole 7 is connected to the disc portion 12.

[0026] See also Figure 3 and Figure 4 In some embodiments, to more securely secure the filter membrane 3, a protrusion 14 is further extended outward from one side of the upper shell 1 and the lower shell 2, and a groove 22 is provided on the lower shell 2 to cooperate with the protrusion 14. The protrusion 14 has the same height as the depth of the groove 22. Thus, after the protrusion 14 and the groove 22 are engaged, the gap between the entire mating surface of the upper shell 1 and the lower shell 2 is the same, which improves the sealing performance. The width of the protrusion 14 is smaller than the width of the groove 22, which facilitates the accommodation of the filter membrane 3. In this embodiment, since the cross-section of the protrusion 14 is rectangular, setting the width of the protrusion 14 to be smaller than the width of the groove 22 can also prevent the filter membrane 3 from being cut during engagement, resulting in loss of the fixing function. It is understood that in some embodiments, the protrusion 14 can also be configured as a semicircular shape.

[0027] See also Figure 3 and Figure 4 , During use, the present invention will be subjected to the pulse pressure of the liquid. In order to prevent the filter membrane 3 from being crushed, a guide rib 21 is provided on the inner wall of the lower shell 2, wherein the guide rib 21 is arranged in a circular array on the inner wall of the lower shell 2, one side of the guide rib 21 is connected to the inner wall of the lower shell 2 with a certain curvature, and the other side is in the same horizontal plane and slightly lower than the abutting edge of the lower shell 2. Specifically, the inner wall of the lower shell 2 is provided with a guide rib 21 for supporting the filter membrane 3; and a plurality of reinforcing ribs 15 are provided on the upper shell 1 on the other side of the filter membrane 3. Specifically, the inner wall of the upper shell 1 is provided with a plurality of reinforcing ribs 15 for limiting the position of the filter membrane 3; and in this embodiment, the inner wall of the disc portion 12 of the upper shell 1 is provided with 16 reinforcing ribs 15, 4 of which are connected to the middle part of the first disc. The reinforcing ribs 15 also play a role in limiting the position of the filter membrane 3. In addition, the reinforcing ribs 15 are arranged in accordance with the laws of air fluid mechanics, which is conducive to the discharge of internal gas.

[0028] See also Figure 1, because the filter in this embodiment needs to be an airtight environment inside when it is working, and the fixing method of the filter membrane 3 mentioned above makes a certain gap between the edge of the filter membrane 3 and the contact surface of the upper shell 1 and the lower shell 2, so that the airtightness inside the filter will be reduced. For this reason, a fixing edge 8 is provided at the edge of the abutment portion 13 of the upper shell 1 and the lower shell 2, wherein the edge 8 is formed by solidifying the molten material; the fluidity of the molten material is used to fill the extrusion gap between the upper shell 1 and the lower shell 2 and the filter membrane 3, and in this embodiment, after the upper shell 1 and the lower shell 2 are buckled together, the filter membrane 3 The edge of the filter membrane 3 is not in contact with the extrusion of the upper shell 1 and the lower shell 2, that is, the edge of the filter membrane 3 is in a suspended state, and a notch 51 is provided on the limiting rib 5 of the lower shell 2, and then the edge of the filter membrane 3 and the extrusion gap are completely filled under the action of the molten edging 8, thereby improving the internal air tightness; specifically, a plurality of notches 5 are provided through the connection between the lower shell 2 and the limiting rib 5; it should be noted that by providing the edging 8, not only the air tightness of the working environment inside the filter is improved, but also the edging 8 after solidification can further fix the upper shell 1 and the lower shell 2, forming an integral structure from top to bottom. In addition, it should be noted that in the process of installing the edging 8, the protrusions 14 and grooves 22 of the above design also have a certain function of blocking the molten edging 8 from entering the interior of the filter.

[0029] In summary, in the disc filter of the above-mentioned embodiment of the present invention, a boss and a hook are respectively provided on the upper shell and the lower shell, and the boss and the hook abut against each other to achieve the clamping connection between the upper shell and the lower shell, so that the filter membrane installed between the upper shell and the lower shell can be pressed and fixed more firmly. In order to enable filter membranes of different thicknesses to be installed between the upper shell and the lower shell, the side where the boss contacts the hook is set to a step-type structure, and the hook abuts against the first and second surfaces of the step at different heights, thereby changing the matching distance between the upper shell and the lower shell, thereby achieving the installation of filter membranes of different thicknesses; in addition, by providing an emptying hole on one side of the pipe part of the upper shell, the gas inside the filtered gas can be discharged by directly connecting the exhaust hole with the disc part, and finally by providing the edging, the airtightness inside the filter is improved, and at the same time, it plays a role of secondary fixing of the upper and lower shells; in addition, due to its unique fixing method and good internal airtightness, only a specific filter membrane needs to be installed to filter the gas.

[0030] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0031] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A disc filter, comprising an upper shell and a lower shell arranged in a mutual manner, and a filter membrane arranged between the upper shell and the lower shell, wherein the outer side of the joint between the upper shell and the lower shell is provided with a rim, characterized in that: The upper shell is provided with a plurality of bosses in an array on the side near one end of the lower shell, and the bosses are arranged in a step shape on the side away from the lower shell, and the step includes a first table and a second table. The lower shell extends outward near the side of the upper shell to form a limit rib for limiting the sidesliding of the bosses, and the limit rib is provided with a hook that cooperates with the bosses, and the hook and the first table or the second table abut against each other so that the upper shell and the lower shell are clamped, and the hook and the boss are staggered to make the upper shell and the lower shell disengaged, the diameter of the filter membrane is the same as the inner diameter of the limit rib, and the upper shell and the lower shell are fixed by the edging to form an integrated structure.

2. The disc filter according to claim 1, characterized in that The upper shell includes a pipe portion and a cover body connected to the pipe portion. The cover body includes a disc portion connected to the pipe portion and an abutment portion connected to one end of the disc portion away from the pipe portion. The boss is provided on the abutment portion.

3. The disc filter according to claim 2, characterized in that: An exhaust hole is provided on the upper side of the pipe portion. The exhaust hole is arranged close to the disc portion and is communicated with the disc portion.

4. The disc filter according to claim 1, characterized in that One side of the upper shell and the lower shell relative to each other extends outward to form a bulge, and the lower shell is provided with a groove matched with the bulge.

5. The disc filter according to claim 1, characterized in that A plurality of notches are provided through the connection between the lower shell and the limiting rib.

6. The disc filter according to claim 1, characterized in that The inner side wall of the lower shell is provided with guide ribs for supporting the filter membrane.

7. The disc filter according to claim 1, characterized in that The inner side wall of the upper shell is provided with a plurality of reinforcing ribs for limiting the filter membrane.

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