Self-cleaning secondary filter

Abstract

According to the self-cleaning secondary filter provided by the utility model, the backwashing pipeline is arranged to carry out backwashing on the filter, is communicated with the filter space and is arranged along the tangential direction of the filter space, and during backwashing, washing liquid enters the filter space along the direction tangential to the inner wall of the shell and the outer wall of the filter element to form circular flow; according to the self-cleaning filter disclosed by the utility model, the self-cleaning of the filter can be realized, the filter element does not need to be frequently disassembled, the packaging production efficiency is greatly improved, and the technical problems that a filtering mechanism in the prior art is difficult to clean and self-clean and the like are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid medicine packaging, in particular to a self-cleaning secondary filter. Background Art

[0002] Chinese medicine liquid refers to a liquid preparation obtained by decocting or soaking the medicinal material slices or coarse particles in boiling water, removing the residue and taking the juice. Modern industrial automatic equipment is usually used for fully automatic processing and production of Chinese medicine liquid, which is directly boiled into a shape and then packaged and exported to form bagged or bottled Chinese medicine decoctions for direct consumption by patients.

[0003] Chinese patent CN202222417715.X discloses a filter valve mechanism and a Chinese medicine decoction packaging device, including a filter and a switching valve group, the filter is provided with an input pipeline, an output pipeline and a drainage pipeline, the switching valve group is arranged on the output pipeline and the drainage pipeline, the switching valve group controls the on-off switching of the output pipeline and the drainage pipeline, so that when the output pipeline is connected, the drainage pipeline is closed, and when the output pipeline is closed, the drainage pipeline is opened. By adding a filter valve mechanism inside the packaging device, the filter valve mechanism is used to perform a secondary filtration on the Chinese medicine liquid to be packaged, and small particulate matter contained in the Chinese medicine liquid is filtered out, thereby ensuring the taste and efficacy of the Chinese medicine liquid.

[0004] However, in the existing technical solutions, a filtering mechanism is added to perform secondary filtration on the packaged Chinese medicine liquid to ensure the taste and efficacy of the Chinese medicine liquid. After a long period of use, the solid Chinese medicine substances remaining on the filtering mechanism need to be removed, but the filtering mechanism in the above-mentioned prior art is difficult to clean and self-clean. Utility Model Content

[0005] The purpose of the utility model is to address the deficiencies of the prior art and provide a self-cleaning secondary filter. The filter is backwashed by setting a backwashing pipeline, which is connected to the filter space and is set along the tangent direction of the filter space. During backwashing, the flushing liquid enters the filter space along the direction tangent to the inner wall of the shell and the outer wall of the filter element to form a circulation, thereby quickly and effectively removing the solid Chinese medicine substances on the inner wall of the shell and the inner wall of the filter element. The utility model can realize the self-cleaning of the filter without frequently removing the filter element, greatly improving the packaging production efficiency, and solving the technical problems of the filtering mechanism in the prior art that is difficult to clean and self-clean.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A self-cleaning secondary filter comprises: a filter body, the filter body comprises: a shell; and a filter element located in the shell, a filter space is provided between the shell and the filter element, the filter element is connected to an input channel, and the filter space is connected to an output pipeline.

[0008] Preferably, it further comprises: a back flushing pipeline, which is connected to the filter space and cleans the housing and the filter element by back flushing.

[0009] Preferably, the backwash pipeline is installed outside the shell and arranged along the tangential direction of the filter space.

[0010] Preferably, the filter body is configured as a cylindrical structure, the diameter of the shell is larger than the diameter of the filter element, and the filtering space is an annular space.

[0011] Preferably, the output pipeline is installed outside the shell and arranged along the tangent direction of the filter space.

[0012] Preferably, the backwash pipeline and the output pipeline are arranged one up and one down along the axial direction of the filter body.

[0013] Preferably, the input channel is provided at the top of the shell, and a sealing portion is radially provided on the circumferential outer ring of the input channel.

[0014] Preferably, a sealing ring groove having a diameter greater than that of the input channel is provided on the inner wall of the shell at the input channel, and the sealing portion is configured as an O-ring and is matched and clamped in the sealing ring groove.

[0015] Preferably, the shell comprises: a side wall; a top cover, the top cover is covered on the top of the side wall; and a bottom cover, the bottom cover is covered on the bottom of the side wall.

[0016] Preferably, among the top cover and the bottom cover, at least the bottom cover is detachably connected to the side wall.

[0017] Preferably, the liquid discharge surface at the bottom of the shell is arranged to be an inverted cone.

[0018] Preferably, it further comprises: a drainage pipeline, wherein the top of the filter element is connected to the input channel, and the bottom of the filter element is connected to the drainage pipeline.

[0019] The beneficial effects of the utility model are:

[0020] (1) The utility model performs reverse flushing of the filter by setting a reverse flushing pipeline, which is connected to the filter space and arranged along the tangent direction of the filter space. During reverse flushing, the flushing liquid enters the filter space along the direction tangent to the inner wall of the shell and the outer wall of the filter element to form a circulation, thereby quickly and effectively removing the residual liquid medicine on the inner wall of the shell and the solid Chinese medicine substance adhering to the inner wall of the filter element. The utility model can realize the self-cleaning of the filter. After the filtration of a Chinese medicine liquid is completed, the rapid self-cleaning of the filter can be realized by only reversely passing the cleaning liquid, without the need to frequently remove the filter element, thereby greatly improving the packaging production efficiency;

[0021] (2) The utility model provides a radial seal on the outer circumference of the input channel. Compared with the traditional end face seal, the circumferential seal used in the utility model has greatly enhanced sealing performance, can achieve reliable sealing, and will not leak when put into production;

[0022] (3) The utility model provides a top cover and a bottom cover of the filter housing, wherein at least the bottom cover and the side wall are detachably connected, so as to facilitate disassembly and maintenance and to remove the filter element for thorough cleaning and replacement;

[0023] (4) The utility model provides a drainage pipeline connected to the filter element at the bottom of the filter housing to quickly discharge the cleaning liquid that is reversely flushed into the filter element. By providing an inverted cone-shaped drainage surface, rapid and complete drainage without residue is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a front view of the overall structure of the utility model;

[0026] Figure 3 for Figure 2 Sectional view at point A;

[0027] Figure 4 for Figure 2 Sectional view at point B;

[0028] Figure 5 for Figure 4 Enlarged view of point C in the middle;

[0029] Figure 6 This is a structural cross-sectional view of the filter body in the utility model;

[0030] Figure 7 for Figure 4 Enlarged view of point D in the middle. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0033] Embodiment 1

[0034] like Figure 1 As shown, a self-cleaning secondary filter comprises: a filter body 1, as shown Figure 2-4 As shown, the filter body 1 includes: a shell 11; and a filter element 12 located in the shell 11, a filter space 13 is provided between the shell 11 and the filter element 12, the filter element 12 is connected to the input channel 10, and the filter space 13 is connected to the output pipeline 2.

[0035] As a preference, Figure 2-3 As shown, it also includes: a backwashing pipeline 3, which is connected to the filter space 13 and cleans the housing 11 and the filter element 12 by backwashing.

[0036] In this embodiment, by setting up a reverse flushing pipeline 3 to reversely flush the inside of the filter, the inside of the filter can be cleaned quickly, thereby realizing self-cleaning of the filter. After the filtration of a traditional Chinese medicine liquid is completed, it is only necessary to reversely pass the cleaning liquid to realize the rapid self-cleaning of the filter, without the need to frequently remove the filter element, thereby greatly improving the packaging production efficiency.

[0037] As a preference, Figure 3 As shown, the backwash pipeline 3 is installed outside the housing 11 and arranged along the tangential direction of the filter space 13 .

[0038] It is particularly worth noting that by setting the backwashing pipeline 3 connected to the filter space 13 and arranged along the tangential direction of the filter space 13, during backwashing, the flushing liquid enters the filter space 13 along the direction tangential to the inner wall of the shell 11 and the outer wall of the filter element 12 and forms a circulation, thereby quickly and effectively removing the residual liquid medicine on the inner wall of the shell 11 and the solid Chinese medicine substance adhering to the inner wall of the filter element 12.

[0039] Preferably, the filter body 1 is configured as a cylindrical structure, the diameter of the housing 11 is larger than the diameter of the filter element 12, and the filter space 13 is an annular space.

[0040] Preferably, the output pipeline 2 is installed outside the housing 11 and arranged along the tangential direction of the filter space 13 .

[0041] As a preference, Figure 1 As shown, the backwash pipeline 3 and the output pipeline 2 are arranged one above and one below along the axial direction of the filter body 1 .

[0042] As a preference, Figure 4 As shown, it also includes: a drainage pipeline 4, the top of the filter element 12 is connected to the input channel 10, and the bottom of the filter element 12 is connected to the drainage pipeline 4.

[0043] In this embodiment, a drainage pipeline 4 connected to the filter element 12 is provided at the bottom of the filter housing 11 to quickly discharge the cleaning liquid that is reversely flushed into the filter element 12 .

[0044] In this embodiment, the backwash pipeline 3 and the drain pipeline 4 are arranged one above and one below the axial direction of the filter body 1, so that the cleaning liquid can circulate and fill the entire axial space of the filter, and all parts can be thoroughly cleaned without dead corners.

[0045] It should be additionally explained that the output pipeline 2 , the backwash pipeline 3 , and the drain pipeline 4 are respectively provided with control valves.

[0046] Embodiment 2

[0047] The components of this embodiment that are the same as or corresponding to those in the above embodiment are marked with the same reference numerals as those in the above embodiment. For the sake of simplicity, only the differences from the above embodiment are described below. The differences between this embodiment and the above embodiment are:

[0048] As a preference, Figure 5As shown, the input channel 10 is disposed on the top of the housing 11 , and a sealing portion 14 is radially disposed on the outer circumference of the input channel 10 .

[0049] In this embodiment, by arranging a radial seal on the circumferential outer ring of the input channel 10, the sealing performance of the circumferential seal used in this embodiment is greatly enhanced compared to the traditional end face seal, and reliable sealing can be achieved without water leakage when put into production.

[0050] Preferably, a sealing ring groove 15 having a diameter greater than that of the input channel 10 is formed on the inner wall of the housing 11 at the input channel 10 , and the sealing portion 14 is configured as an O-ring and is matched and clamped in the sealing ring groove 15 .

[0051] Embodiment 3

[0052] The components of this embodiment that are the same as or corresponding to those in the above embodiment are marked with the same reference numerals as those in the above embodiment. For the sake of simplicity, only the differences from the above embodiment are described below. The differences between this embodiment and the above embodiment are:

[0053] As a preference, Figure 6 As shown, the housing 11 includes: a side wall 111 ; a top cover 112 , wherein the top cover 112 covers the top of the side wall 111 ; and a bottom cover 113 , wherein the bottom cover 113 covers the bottom of the side wall 111 .

[0054] Preferably, among the top cover 112 and the bottom cover 113 , at least the bottom cover 113 is detachably connected to the side wall 111 .

[0055] In this embodiment, by providing the top cover 112 and the bottom cover 113 of the filter housing 11 so that at least the bottom cover 113 is detachably connected to the side wall 111 , disassembly and maintenance as well as taking out the filter element 12 for thorough cleaning and replacement are facilitated.

[0056] Embodiment 4

[0057] The components of this embodiment that are the same as or corresponding to those in the above embodiment are marked with the same reference numerals as those in the above embodiment. For the sake of simplicity, only the differences from the above embodiment are described below. The differences between this embodiment and the above embodiment are:

[0058] As a preference, Figure 6-7 As shown, the liquid discharge surface 110 at the bottom of the shell 11 is set to be an inverted cone.

[0059] In this embodiment, a drainage pipe 4 connected to the filter element 12 is provided at the bottom of the filter housing 11 to quickly discharge the cleaning liquid reversely flushed into the filter element 12, and an inverted cone-shaped drainage surface 110 is provided to ensure rapid and complete drainage without residue.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-cleaning secondary filter, comprising: A filter body, the filter body comprising: a housing; and A filter element is located in the housing, a filter space is provided between the housing and the filter element, the filter element is communicated with an input channel, and the filter space is communicated with an output pipeline; It is characterized by further comprising: A back flushing pipeline is communicated with the filter space and cleans the housing and the filter element by back flushing.

2. A self-cleaning secondary filter according to claim 1, characterized in that: The backwash pipeline is installed outside the shell and arranged along the tangent direction of the filter space.

3. A self-cleaning secondary filter according to claim 1, characterized in that: The filter body is configured as a cylindrical structure, the diameter of the shell is larger than the diameter of the filter element, and the filter space is an annular space.

4. A self-cleaning secondary filter according to claim 1, characterized in that: The output pipeline is installed outside the shell and arranged along the tangent direction of the filter space.

5. A self-cleaning secondary filter according to claim 1, characterized in that: The backwash pipeline and the output pipeline are arranged in an upper and lower distribution along the axial direction of the filter body.

6. A self-cleaning secondary filter according to any one of claims 1 to 5, characterized in that: The top of the shell is provided with the input channel, and the outer circumference of the input channel is provided with a sealing portion in the radial direction.

7. A self-cleaning secondary filter according to claim 6, characterized in that: The inner wall of the shell at the input channel is provided with a sealing ring groove with a diameter larger than that of the input channel, and the sealing portion is configured as an O-ring and is matched and clamped in the sealing ring groove.

8. A self-cleaning secondary filter according to any one of claims 1 to 5, characterized in that: The housing comprises: Side wall; a top cover, the top cover covering the top of the side wall; and A bottom cover, the bottom cover covers the bottom of the side wall; Of the top cover and the bottom cover, at least the bottom cover is detachably connected to the side wall.

9. A self-cleaning secondary filter according to any one of claims 1 to 5, characterized in that: The liquid discharge surface at the bottom of the shell is arranged in an inverted cone shape.

10. A self-cleaning secondary filter according to any one of claims 1 to 5, characterized in that: Also includes: A liquid discharge pipeline, wherein the top of the filter element is communicated with the input channel, and the bottom of the filter element is communicated with the liquid discharge pipeline.

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