Filtering device

Abstract

The utility model provides a filter device which comprises a filter cartridge, a filter element, a filter element, a filter element, a filter element and a filter element, wherein the filter cartridge is provided with an opening and a filter cavity; the stirring assembly is rotatably arranged in the filtering cavity so as to drive materials in the filtering cavity to rotate; the fixing assembly comprises a fixing cover, a pressing cover, a first sealing structure and a second sealing structure, the fixing cover is detachably arranged at the opening and provided with a fixing hole, the pressing cover is detachably arranged at the fixing hole and provided with a connecting hole, one end of the stirring assembly is arranged in the fixing hole and the connecting hole in a penetrating mode, and the first sealing structure is connected with the second sealing structure. The first sealing structure is arranged between the bottom of the gland and the fixing hole, the second sealing structure is arranged between the connecting hole and the stirring assembly, and the first sealing structure and the second sealing structure are in sealing connection with the stirring assembly. By means of the technical scheme, the problem that in the prior art, the sealing performance of a filtering device is poor can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, in particular to a filtering device. Background Art

[0002] During the yeast production process, a filtration device is required to filter the yeast to remove impurities. The filtration device comprises a filter cartridge, a stirring assembly, and a gland structure. The stirring assembly is rotatably disposed within the filter cartridge, and the gland structure secures the stirring assembly to the opening of the filter cartridge. In the prior art, the gland structure and the stirring assembly are sealed with packing. However, the packing is more likely to leak over time. In the food-grade industry, leakage poses a risk of microbial growth in the medium, making it impossible to guarantee the hygienic safety of the yeast. Utility Model Content

[0003] The utility model provides a filtering device to solve the problem of poor sealing performance of the filtering device in the prior art.

[0004] The utility model provides a filtering device, which includes: a filter cartridge, which has an opening and a filter chamber that are interconnected; a stirring assembly, which is rotatably arranged in the filter chamber to drive the material in the filter chamber to rotate; a fixing assembly, which includes a fixing cover, a pressure cover, a first sealing structure and a second sealing structure, the fixing cover is detachably arranged at the opening, the fixing cover has a fixing hole, the pressure cover is detachably arranged at the fixing hole, the pressure cover has a connecting hole, one end of the stirring assembly is inserted into the fixing hole and the connecting hole, the first sealing structure is arranged between the bottom of the pressure cover and the fixing hole, the second sealing structure is arranged between the connecting hole and the stirring assembly, and the first sealing structure and the second sealing structure are sealed and connected to the stirring assembly.

[0005] Furthermore, the connecting hole and the second sealing structure are interference fit.

[0006] Furthermore, a limiting structure is provided on the gland to limit the axial displacement of the second sealing structure.

[0007] Furthermore, the pressure cover has a first step section and a second step section connected to each other, the first step section has a first through hole, the second step section has a second through hole, the first through hole and the second through hole cooperate to form a connecting hole, the outer diameter of the first step section is larger than the outer diameter of the second step section, the diameter of the first through hole is smaller than the diameter of the second through hole, the step surface between the first through hole and the second through hole forms a limiting structure, the second sealing structure is arranged in the second through hole, the second step section is arranged in the connecting hole, the first step section is detachably connected to the fixing hole, an abutting surface is arranged in the fixing hole, and the first sealing structure is arranged between the abutting surface and the end face of the second step section.

[0008] Furthermore, a third sealing structure is provided between the outer wall of the second step section and the inner wall of the fixing hole.

[0009] Furthermore, the diameter difference between the first through hole and the second through hole is set between 3 mm and 5 mm.

[0010] Furthermore, the first sealing structure is a packing.

[0011] Furthermore, the second sealing structure is a PTFE stainless steel oil seal.

[0012] Furthermore, the filtering device also includes a driving structure, and the stirring assembly includes: a rotating shaft, the driving structure is connected to the rotating shaft, and one end of the rotating shaft is inserted into the fixing hole and the connecting hole; a stirring structure, which is detachably arranged at the second end of the rotating shaft, and the stirring structure is used to drive the material in the filter chamber to rotate.

[0013] Furthermore, the fixing assembly also includes a bracket, which is arranged on the top of the fixing cover and surrounds the outer periphery of the fixing hole, and the driving structure is fixed on the bracket.

[0014] According to the technical solution of the present invention, the stirring assembly is rotatably arranged in the filter chamber, the fixed cover is arranged at the opening of the filter cartridge, the pressure cover is arranged at the fixed hole of the fixed cover, the stirring assembly is inserted into the fixed hole and the connecting hole, the first sealing structure is arranged between the pressure cover and the fixed hole, and the second sealing structure is arranged between the connecting hole and the stirring assembly. Both the first sealing structure and the second sealing structure are capable of sealing the fixed assembly and the stirring assembly. With this arrangement, if one of the first sealing structure and the second sealing structure leaks, the other can still seal the fixed assembly and the stirring assembly, thereby improving the sealing effect between the fixed assembly and the stirring assembly, preventing impurities from entering the filter cartridge through the gap between the fixed assembly and the stirring assembly, and avoiding the hidden danger of yeast producing microorganisms, thereby ensuring the safety and hygiene of the yeast. In addition, the first sealing structure and the second sealing structure are placed in different positions, which facilitates the arrangement of the first sealing structure and the second sealing structure and prevents the first sealing structure and the second sealing structure from affecting each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 Shows a schematic structural diagram of the fixing assembly provided by the present utility model;

[0017] Figure 2 Shows a schematic structural diagram of the gland provided by the utility model;

[0018] Figure 3 The figure shows a structural schematic diagram of the rotating shaft provided by the utility model.

[0019] The above drawings include the following reference numerals:

[0020] 10. Fixing components;

[0021] 11. Fixed cover;

[0022] 111, fixing hole;

[0023] 12. Gland;

[0024] 121, connecting hole;

[0025] 122. First step;

[0026] 1221, first through hole;

[0027] 123, the second step;

[0028] 1231, second through hole;

[0029] 1232, slotting;

[0030] 13. First sealing structure;

[0031] 14. Second sealing structure;

[0032] 15. Bracket;

[0033] 21. Rotating axis. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] like Figures 1 to 3As shown, an embodiment of the present invention provides a filtering device, which includes a filter cartridge, a stirring assembly and a fixed assembly 10. The filter cartridge has an opening and a filter chamber that are interconnected. The stirring assembly is rotatably arranged in the filter chamber to drive the material in the filter chamber to rotate. The fixed assembly 10 includes a fixed cover 11, a pressure cover 12, a first sealing structure 13 and a second sealing structure 14. The fixed cover 11 is detachably arranged at the opening, and the fixed cover 11 has a fixing hole 111. The pressure cover 12 is detachably arranged at the fixing hole 111. The pressure cover 12 has a connecting hole 121. One end of the stirring assembly is inserted into the fixing hole 111 and the connecting hole 121. The first sealing structure 13 is arranged between the bottom of the pressure cover 12 and the fixing hole 111. The second sealing structure 14 is arranged between the connecting hole 121 and the stirring assembly. The first sealing structure 13 and the second sealing structure 14 are sealed and connected to the stirring assembly.

[0036] According to the technical solution of the present application, the stirring assembly is rotatably arranged in the filter chamber, the fixed cover 11 is arranged at the opening of the filter cartridge, the pressure cover 12 is arranged at the fixing hole 111 of the fixed cover 11, the stirring assembly is inserted into the fixing hole 111 and the connecting hole 121, the first sealing structure 13 is arranged between the pressure cover 12 and the fixing hole 111, and the second sealing structure 14 is arranged between the connecting hole 121 and the stirring assembly. The first sealing structure 13 and the second sealing structure 14 are both capable of sealing the fixed assembly 10 and the stirring assembly. With this arrangement, if one of the first sealing structure 13 and the second sealing structure 14 leaks, the other can still seal the fixed assembly 10 and the stirring assembly, thereby improving the sealing effect between the fixed assembly 10 and the stirring assembly, preventing impurities from entering the filter cartridge through the gap between the fixed assembly 10 and the stirring assembly, and avoiding the hidden danger of yeast producing microorganisms, thereby ensuring the safety and hygiene of the yeast. Furthermore, the first sealing structure 13 and the second sealing structure 14 are placed at different positions, which facilitates the arrangement of the first sealing structure 13 and the second sealing structure 14 and avoids mutual influence between the first sealing structure 13 and the second sealing structure 14 .

[0037] Furthermore, in the prior art, when packing is used for sealing, leakage often occurs between the stirring assembly and the gland 12, requiring frequent replacement of the packing. However, in the present application, since both the first sealing structure 13 and the second sealing structure 14 are used for sealing, the number of replacements of the sealing structures can be reduced, thereby reducing maintenance costs and labor costs of staff.

[0038] Specifically, the connecting hole 121 and the second sealing structure 14 are interference fit.

[0039] Such a configuration facilitates fixing the second sealing structure 14 in the connecting hole 121 , has a simple structure, avoids the use of additional fasteners, and can improve the assembly efficiency of the second sealing structure 14 and the work efficiency of the staff.

[0040] A limiting structure is provided on the gland 12 to limit the axial displacement of the second sealing structure 14 .

[0041] Such a configuration can further prevent the second sealing structure 14 from falling out of the connecting hole 121 , thereby preventing the second sealing structure 14 from affecting the operation of other structures after failure.

[0042] Furthermore, the gland 12 has a first step section 122 and a second step section 123 connected to each other. The first step section 122 has a first through hole 1221 , and the second step section 123 has a second through hole 1231 . The first through hole 1221 and the second through hole 1231 cooperate to form a connecting hole 121 .

[0043] The outer diameter of the first stepped section 122 is larger than the outer diameter of the second stepped section 123, and the diameter of the first through hole 1221 is smaller than the diameter of the second through hole 1231. The stepped surface between the first through hole 1221 and the second through hole 1231 forms a retaining structure. This arrangement facilitates the processing of the gland 12 and the retaining structure.

[0044] The second sealing structure 14 is disposed in the second through hole 1231, the second step section 123 is disposed in the connecting hole 121, and the first step section 122 is detachably connected to the fixing hole 111. In this application, the first step section 122 is detachably connected to the fixing hole 111 using bolts.

[0045] An abutting surface is provided in the fixing hole 111, and the first sealing structure 13 is provided between the abutting surface and the end surface of the second step section 123. This arrangement facilitates fixing the first sealing structure 13, and the fixing cover 11 has a simple structure and is easy to process.

[0046] Specifically, a third sealing structure is provided between the outer wall of the second stepped section 123 and the inner wall of the fixing hole 111. This arrangement ensures a tight seal between the gland 12 and the fixing cover 11, preventing impurities from entering between the second stepped section 123 and the fixing hole 111, and further ensuring the hygienic safety of the yeast.

[0047] Optionally, the third sealing structure may be a sealing ring.

[0048] In the present application, a groove 1232 is provided on the outer wall of the second step section 123, and the groove 1232 is annularly arranged around the outer periphery of the second step section 123. The third sealing structure is arranged in the groove 1232. Such a setting can prevent the third sealing structure from falling, so that the third sealing structure can normally seal between the outer wall of the second step section 123 and the inner wall of the fixing hole 111.

[0049] Furthermore, the diameter difference between the first through hole 1221 and the second through hole 1231 is set between 3 mm and 5 mm.

[0050] Among them, when the diameter difference between the first through hole 1221 and the second through hole 1231 is less than 3mm, when the second sealing structure 14 is loose, the second sealing structure 14 is very easy to fall off from the first through hole 1221, affecting the use of other structures; when the diameter difference between the first through hole 1221 and the second through hole 1231 is greater than 5mm, it is not easy for the staff to install the second sealing structure 14 through the first through hole 1221 to the second through hole 1231 when installing the second sealing structure 14; therefore, the diameter difference between the first through hole 1221 and the second through hole 1231 is set between 3mm and 5mm, which can not only prevent the second sealing structure 14 from falling off from the first through hole 1221, but also facilitate the installation of the second sealing structure 14 into the second through hole 1231.

[0051] Specifically, the first sealing structure 13 is a packing.

[0052] Such a configuration has a simple structure and is convenient for installing the packing. It can also reduce the cost of the first sealing structure 13 and reduce the friction on the stirring assembly, thereby ensuring the normal rotation of the stirring assembly.

[0053] Furthermore, the second sealing structure 14 is a PTFE stainless steel oil seal.

[0054] This configuration allows the second sealing structure 14 to be resistant to high temperatures, corrosion, wear, and high pressures. Furthermore, the second sealing structure 14 provides a good seal, preventing impurities from contaminating the yeast. Furthermore, the second sealing structure 14 has a low coefficient of friction, ensuring the normal rotation of the stirring assembly.

[0055] The filtration device also includes a drive structure, and the stirring assembly includes a rotating shaft 21 and a stirring structure. The drive structure is drivingly connected to the rotating shaft 21, and the drive structure is removably connected to the fixing assembly 10. One end of the rotating shaft 21 is inserted into the fixing hole 111 and the connecting hole 121. The stirring structure is removably attached to the second end of the rotating shaft 21 and is used to drive the material in the filter chamber to rotate.

[0056] With such arrangement, the stirring assembly has a simple structure and is convenient for fixing the rotating shaft 21. In the present application, the rotating shaft 21 is connected to the stirring structure by bolts, which has a simple structure and is easy to assemble.

[0057] Specifically, the fixing assembly 10 further includes a bracket 15, which is disposed on the top of the fixing cover 11 and surrounds the outer periphery of the fixing hole 111. The drive structure is fixed to the bracket 15. This arrangement facilitates the installation of the drive structure and prevents interference between the drive structure and other structures, resulting in a simple structure and easy operation.

[0058] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0059] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0060] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0061] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0062] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0063] 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 filtering device, characterized in that: The filtering device comprises: A filter cartridge having an opening and a filter cavity that are interconnected; a stirring assembly rotatably disposed in the filter cavity to drive the material in the filter cavity to rotate; A fixing assembly (10), the fixing assembly (10) comprising a fixing cover (11), a pressure cover (12), a first sealing structure (13) and a second sealing structure (14); the fixing cover (11) is detachably arranged at the opening; the fixing cover (11) has a fixing hole (111); the pressure cover (12) is detachably arranged at the fixing hole (111); the pressure cover (12) has a connecting hole (121); one end of the stirring assembly is passed through the fixing hole (111) and the connecting hole (121); the first sealing structure (13) is arranged between the bottom of the pressure cover (12) and the fixing hole (111); the second sealing structure (14) is arranged between the connecting hole (121) and the stirring assembly; the first sealing structure (13) and the second sealing structure (14) are sealed and connected to the stirring assembly.

2. The filtering device according to claim 1, characterized in that The connecting hole (121) and the second sealing structure (14) are interference-fitted.

3. The filtering device according to claim 1, characterized in that A limiting structure is provided on the gland (12) to limit the axial displacement of the second sealing structure (14).

4. The filtering device according to claim 3, characterized in that The gland (12) comprises a first step section (122) and a second step section (123) which are connected to each other, the first step section (122) comprises a first through hole (1221), the second step section (123) comprises a second through hole (1231), the first through hole (1221) and the second through hole (1231) cooperate to form the connecting hole (121), the outer diameter of the first step section (122) is larger than the outer diameter of the second step section (123), and the diameter of the first through hole (1221) is smaller than the diameter of the second through hole (123). 1), a stepped surface between the first through hole (1221) and the second through hole (1231) forms the limiting structure, the second sealing structure (14) is arranged in the second through hole (1231), the second stepped section (123) is arranged in the connecting hole (121), the first stepped section (122) is detachably connected to the fixing hole (111), an abutting surface is arranged in the fixing hole (111), and the first sealing structure (13) is arranged between the abutting surface and the end face of the second stepped section (123).

5. The filtering device according to claim 4, characterized in that A third sealing structure is provided between the outer wall of the second step section (123) and the inner wall of the fixing hole (111).

6. The filtering device according to claim 4, characterized in that The diameter difference between the first through hole (1221) and the second through hole (1231) is set between 3 mm and 5 mm.

7. The filtering device according to claim 1, characterized in that The first sealing structure (13) is a packing.

8. The filtering device according to claim 1, characterized in that The second sealing structure (14) is a PTFE stainless steel oil seal.

9. The filtering device according to claim 1, characterized in that The filtering device further includes a driving structure, and the stirring assembly includes: A rotating shaft (21), the driving structure being drivingly connected to the rotating shaft (21), one end of the rotating shaft (21) being inserted into the fixing hole (111) and the connecting hole (121); A stirring structure is detachably arranged at the second end of the rotating shaft (21), and the stirring structure is used to drive the material in the filter cavity to rotate.

10. The filtering device according to claim 9, characterized in that The fixing assembly (10) further includes a bracket (15), the bracket (15) being arranged on the top of the fixing cover (11), and the bracket (15) being arranged around the outer periphery of the fixing hole (111), and the driving structure being fixed on the bracket (15).

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