Capsule filter

Abstract

The utility model discloses a capsule filter which comprises an outer capsule shell, and a liquid inlet pipe and an exhaust pipe are connected to the outer portion of the outer capsule shell in an inserted mode. The inner supporting pipe comprises a liquid outlet pipe fixed to the inner side of the outer capsule shell, the end, close to the outer capsule shell, of the liquid outlet pipe is connected with a barrel, and a plurality of small holes are formed in the peripheral face of the barrel; the winding type filter element comprises a plurality of sheet-shaped filter layers and a plurality of supporting layers, the sheet-shaped filter layers or the supporting layers are wound on the outer side of the barrel, the sheet-shaped filter layers and the supporting layers are alternately arranged and form a barrel-shaped structure, and fluid flows into the winding type filter element through the liquid inlet pipe, is filtered layer by layer through the sheet-shaped filter layers and the supporting layers and flows out of the liquid outlet pipe through the barrel. According to the utility model, fluid can be filtered in a layer-by-layer filtering manner.

Description

Technical Field

[0001] The utility model relates to a filter, in particular to a capsule filter. Background Art

[0002] As a liquid separation device, filters are widely used in fluid purification and impurity removal in the food, beverage, pharmaceutical, biotechnology, new energy, semiconductor and other industries. There are many types of filters, and different filters are required according to different scenarios and fluids. Capsule filters, also known as integrated filters, use a wound imported filter membrane with a large filtration surface area, which is suitable for filtering larger volume solutions.

[0003] The capsule filter in the prior art is composed of a filter element, an inner tube, and an outer shell. The fluid is filtered through the filter element and then discharged directly through the liquid outlet pipe. However, in fact, this filtering method can only filter out some large particles of solid impurities, and it is easy to cause some small particles of solid impurities to slip away with the fluid, resulting in poor filtering effect of the filter and the quality of the filtered fluid cannot be guaranteed.

[0004] Therefore, this case aims to provide a capsule filter that can not only filter the fluid through layer-by-layer filtration, but also conduct a centralized secondary filtration of the fluid to be output, and periodically clean the secondary filtration structure, thereby improving the filter's filtering effect on small particles of solid matter. Utility Model Content

[0005] The utility model provides a capsule filter, which can effectively solve the above problems.

[0006] The utility model is achieved in this way:

[0007] A capsule filter comprising:

[0008] An outer sac shell, wherein a liquid inlet pipe and an exhaust pipe are plugged into the outside of the outer sac shell;

[0009] The inner support tube includes a liquid outlet tube fixed to the inner side of the outer sac shell, wherein one end of the liquid outlet tube close to the outer sac shell is connected to a cylinder, and a plurality of small holes are opened on the outer circumference of the cylinder;

[0010] The wound filter element comprises a plurality of sheet-like filter layers and a plurality of support layers. The sheet-like filter layers or support layers are wound around the outside of the cylinder. The sheet-like filter layers and the support layers are alternately arranged to form a cylindrical structure. After the fluid flows into the wound filter element through the liquid inlet pipe, it is filtered layer by layer through the plurality of sheet-like filter layers and the plurality of support layers, and flows out from the liquid outlet pipe through the cylinder.

[0011] As a further improvement, the sheet-like filter layer is a non-woven filter membrane.

[0012] As a further improvement, the support layer is a PP support layer.

[0013] As a further improvement, the mesh counts of the sheet-like filter layer and the support layer gradually increase in the direction approaching the cylinder.

[0014] As a further improvement, the cylinder body includes an outer tube, an outwardly protruding inner conduit is nested inside the outer tube, one end of the inner conduit is connected to the liquid outlet pipe, and a filter screen is provided on the other end of the inner conduit.

[0015] As a further improvement, a back-pumping tube is provided on a side of the outer capsule away from the liquid inlet tube, and the back-pumping tube is plugged into the interior of the outer capsule and connected to the outer tube.

[0016] As a further improvement, a filter cloth is fixed on the small hole.

[0017] The beneficial effects of the utility model are:

[0018] Among the existing small capsule filters, although they are compact and portable, due to their simple structure, the filtration effect of the capsule filter is actually prioritized. Therefore, in the present invention, the conventional filter element is set as a wound filter element. The wound filter element is formed by winding many layers of sheet filter layers and many layers of support layers, thereby forming a hollow cylindrical structure. The inflowing fluid needs to be filtered through layers of sheet filter layers before finally flowing out from the inner support tube, achieving the efficiency of multi-layer filtration. In addition, the support layer can also play a certain filtering effect while achieving the supporting effect, so that each time the fluid passes through a layer of the filter element structure, it is subject to a layer of filtration effect, and the particle blocking ability is extremely strong.

[0019] The entire roll of wound filter element needs to be supported by an inner support tube, but the inner support tube is not just a supporting and fixed structure. On the basis of the wound filter element, the utility model sets the inner side of the inner support tube in the form of an outer tube and an inner guide tube, so that the fluid filtered by the wound filter element is first collected to the outer tube, and then filtered twice through the filter mesh plate on the inner guide tube, so that it is filtered again before flowing out, and all particles of different sizes can be completely filtered out. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0021] Figure 1This is a schematic diagram of the external structure of a capsule filter of the present utility model.

[0022] Figure 2 The utility model is a schematic diagram of the internal structure of a capsule filter.

[0023] Figure 3 This utility model Figure 2 Schematic diagram of the right view structure.

[0024] Figure 4 It is a structural schematic diagram of the inner support tube of the utility model. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically specified.

[0027] Reference Figures 1 to 4As shown, a capsule filter comprises: an outer capsule shell 10, the outside of which is plugged with a liquid inlet pipe 11 and an exhaust pipe 12; an inner support tube 20, comprising a liquid outlet pipe 21 fixed on the inner side of the outer capsule shell 10, the liquid outlet pipe 21 is connected to a cylinder 22 at one end close to the outer capsule shell 10, and the outer peripheral surface of the cylinder 22 is provided with a plurality of small holes; a wound filter element 30, comprising a plurality of sheet filter layers 31 and a plurality of support layers 32, the sheet filter layers 31 or the support layers 32 are wound on the outer side of the cylinder 22, the sheet filter layers 31 and the support layers 32 are alternately arranged to form a cylindrical structure, after the fluid flows into the wound filter element 30 through the liquid inlet pipe 11, it is filtered layer by layer through the plurality of sheet filter layers 31 and the plurality of support layers 32, and flows out from the liquid outlet pipe 21 through the cylinder 22.

[0028] The capsule filter in this embodiment can be used for a variety of fluids, for example, it can be printing water, domestic sewage, or even sewage generated by pickling during semiconductor processing, high-viscosity fluids in the food industry, water, ink and other fluids used in the printing industry, high-viscosity fluids in the new energy industry, and acidic and alkaline sewage generated during the processing of the semiconductor and biopharmaceutical industries.

[0029] Among the existing small capsule filters, although they are compact and portable, due to their simple structure, the filtration effect of the capsule filter is actually prioritized. Therefore, in the present invention, the conventional filter element is set as a wound filter element 30. The wound filter element 30 is formed by winding many layers of sheet filter layers 31 and many layers of support layers 32, thereby forming a hollow cylindrical structure. The inflowing fluid needs to be filtered through layers of sheet filter layers 31 before finally flowing out from the inner support tube 20, achieving the efficiency of multi-layer filtration. In addition, the support layer 32 can also play a certain filtering effect while achieving the supporting effect, so that each time the fluid passes through a layer of the filter element structure, it is subjected to a layer of filtration effect, and the particle blocking ability is extremely strong.

[0030] During the water intake process, the water enters through the lateral liquid inlet pipe 11. Regardless of the amount of water, regardless of the water pressure, it will pass through the layer-by-layer sheet filter layer 31 and the support layer 32, and finally flow out through the small holes in the inner support tube 20.

[0031] In this embodiment, the sheet filter layer 31 is a non-woven filter membrane, so that solid particles can be filtered through the non-woven filter membrane. However, if multiple layers of non-woven filter membranes are directly stacked together, the filter membranes are likely to stick together, which reduces the filtration efficiency. Therefore, in this embodiment, the sheet filter layer 31 and the support layer 32 are alternately arranged. Specifically, the support layer 32 is a PP support layer, which has a certain supporting capacity and also has a mesh.

[0032] During the filtration stage, it is necessary to follow the principle of gradual filtration, that is, to filter out larger particles in the outermost layer and then filter out small particles in the inner layer. Therefore, the mesh size of the sheet filter layer 31 and the support layer 32 of this embodiment gradually increases in the direction close to the cylinder 22, so that large particles can be blocked on the outside, and when replacing, the internal replacement cycle can also be extended, and only the external part needs to be replaced.

[0033] After passing through the wound filter element 30, the particles in the fluid have been basically filtered out. However, in order to further improve the filtering effect, the cylinder body 22 of this embodiment includes an outer cylinder tube 221, and an outwardly convex inner conduit 222 is nested on the inner side of the outer cylinder tube 221. One end of the inner conduit 222 is connected to the liquid outlet pipe 21, and a filter screen plate 223 is provided on the other end of the inner conduit 222. The entire wound filter element 30 needs to be supported by the inner support tube 20, but the inner support tube 20 is not just a supporting and fixed structure. In this embodiment, on the basis of the wound filter element 30, the inner side of the inner support tube 20 is set in the form of an outer cylinder tube 221 and an inner conduit 222, so that the fluid filtered by the wound filter element 30 is first collected into the outer cylinder tube 221, and then filtered twice by passing through the filter screen plate 223 on the inner conduit 222, so that it is filtered again before flowing out, and particles of all sizes can be completely filtered out.

[0034] In fact, small holes are opened on the outer tube 221. In this embodiment, filter cloth is fixed on the small holes, which can achieve the effect of three-layer filtering.

[0035] In fact, the filtration accuracy of the filter screen 223 is higher than that of the innermost non-woven filter membrane, so that it can serve as the last filtration barrier. However, this layer of filter screen 223 will also be blocked to a certain extent after long-term use, thereby affecting the filtration efficiency. Therefore, the outer capsule 10 of the utility model is provided with a back-suction tube 13 on the side away from the liquid inlet pipe 11. The back-suction tube 13 is inserted into the interior of the outer capsule 10 and connected to the outer tube 221. After a period of use, for example, three months, the air can be exhausted through the exhaust pipe 12, and the use can be suspended for a few days. Then, the negative pressure equipment can be connected to the back-suction tube 13, and the position of the back-suction tube 13 can be reversely sucked point by point to suck the particles on the dried filter screen 223 in the opposite direction, so that the filter screen 223 becomes transparent again.

[0036] In addition, when dealing with some fluids that are more difficult to pump out, some residual liquid may remain in the filter element. The fluid remaining in the filter element can also be extracted through the back-pumping tube 13, so that the filter element can be left empty when the fluid is dried next time. The extracted fluid can be processed and used again, reducing the company's production costs.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A capsule filter, characterized in that: include: An outer sac shell (10), wherein a liquid inlet pipe (11) and an exhaust pipe (12) are plugged into the exterior of the outer sac shell (10); The inner support tube (20) includes a liquid outlet tube (21) fixed to the inner side of the outer sac shell (10), wherein one end of the liquid outlet tube (21) close to the outer sac shell (10) is connected to a cylinder (22), and a plurality of small holes are formed on the outer peripheral surface of the cylinder (22); The wound filter element (30) comprises a plurality of sheet-like filter layers (31) and a plurality of support layers (32). The sheet-like filter layers (31) or the support layers (32) are wound around the outside of a cylinder (22). The sheet-like filter layers (31) and the support layers (32) are alternately arranged to form a cylindrical structure. After the fluid flows into the wound filter element (30) through the liquid inlet pipe (11), it is filtered layer by layer through the plurality of sheet-like filter layers (31) and the plurality of support layers (32) and flows out from the liquid outlet pipe (21) through the cylinder (22).

2. A capsule filter according to claim 1, characterized in that: The sheet-like filter layer (31) is a non-woven filter membrane.

3. The capsule filter according to claim 2, characterized in that: The support layer (32) is a PP support layer.

4. The capsule filter according to claim 3, characterized in that: The mesh counts of the sheet-like filter layer (31) and the support layer (32) gradually increase in a direction approaching the cylinder (22).

5. The capsule filter according to claim 1, characterized in that: The cylinder (22) comprises an outer tube (221), an outwardly protruding inner conduit (222) is nested inside the outer tube (221), one end of the inner conduit (222) is connected to the liquid outlet pipe (21), and a filter screen (223) is provided on the other end of the inner conduit (222).

6. The capsule filter according to claim 1, characterized in that: A back-pumping tube (13) is provided on a side of the outer capsule (10) away from the liquid inlet tube (11), and the back-pumping tube (13) is plugged into the interior of the outer capsule (10) and connected to the outer barrel (221).

7. The capsule filter according to claim 1, characterized in that: The small holes are fixed with filter cloth.

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