Filter shell and bag type filter

Abstract

The utility model relates to the technical field of filters, in particular to a filter shell and a bag type filter, which comprise an upper shell and a lower shell, an annular air bag is mounted at the bottom of the upper shell, and a long ring and a short ring are mounted on the outer wall of the lower shell and close to the joint of the lower shell and the upper shell. A vacant ring and an end ring are installed on the outer wall of the upper shell and close to the connecting position of the upper shell and the lower shell, an air bag block communicated with the annular air bag through a guide pipe is installed in the end ring, a movable annular rod is installed in the long ring, and the filter shell and the bag type filter sequentially penetrate through the vacant ring and the short ring through the annular rod till the ends of the filter shell and the bag type filter are inserted into the end ring. The connection of the upper shell and the lower shell can be completed only by rotating the air bag block, the operation is simple and convenient, the annular rod with the end extending into the end ring extrudes the air bag block to transfer internal air into the annular air bag, the expanded annular air bag can fill a gap between the upper shell and the lower shell, and the sealing performance of the filter shell after installation is ensured.

Description

Technical Field

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

[0002] The capsule filter adopts a folded imported filter membrane with a large filtration surface area, which is suitable for filtering larger-volume solutions. The outer surface of this filter is made of polypropylene material, without adhesives and other chemical substances, ensuring no contamination of the sample. The filter has different pore sizes for selection and can be autoclaved. The capsule filter consists of a housing, a filter element and a pipeline connected to the housing. The filter element needs to be replaced regularly, and the inside of the filter needs to be cleaned regularly to ensure the filtering effect. Some existing capsule filters are composed of an upper housing and a lower housing connected by threads. When loading and unloading, the two need to be rotated relative to each other. To avoid the pipelines connected to each other from being entangled and knotted, the pipelines also need to be disassembled. The loading and unloading operations are cumbersome, affecting the maintenance efficiency of the filter. Summary of the Utility Model

[0003] (I) Technical Problems to be Solved

[0004] In view of the deficiencies of the prior art, the utility model provides a filter housing and a capsule filter, which solve the problem that some existing capsule filter housings are composed of an upper housing and a lower housing connected by threads. When loading and unloading, the two need to be rotated relative to each other. To avoid the pipelines connected to each other from being entangled and knotted, the pipelines also need to be disassembled. The loading and unloading operations are cumbersome, affecting the maintenance efficiency of the filter.

[0005] (II) Technical Solutions

[0006] To achieve the above object, the utility model is realized through the following technical solutions: A filter housing includes an upper housing and a lower housing. The top of the upper housing is provided with an upper connecting pipe and an exhaust pipe. The bottom of the lower housing is provided with a lower connecting pipe and a sewage pipe. An annular airbag is installed at the bottom of the upper housing. A long ring and a short ring are installed on the outer wall of the lower housing near its connection with the upper housing. A vacancy ring and an end ring are installed on the outer wall of the upper housing near its connection with the lower housing. An airbag block communicated with the annular airbag through a conduit is installed inside the end ring. A movable annular rod is installed inside the long ring. The end of the annular rod sequentially enters the vacancy ring, the short ring and the end ring to realize the connection between the upper housing and the lower housing.

[0007] Further, a screw rod is installed on the side wall of the annular rod. The end of the screw rod extends outside the long ring. A screw ring is threadedly connected to the outer wall of the screw rod and located outside the long ring. A strip-shaped through groove for the movement of the screw rod is opened on the side wall of the long ring. By fluctuating the screw rod, the movement of the annular rod can be driven, so that its end sequentially penetrates through the vacancy ring and the short ring until it enters the end ring. Rotating the screw ring to abut against the outer wall of the long ring can limit the movement of the annular rod.

[0008] Further, corresponding protrusions and grooves are provided on the adjacent sides of the upper shell and the lower shell, increasing the contact area between the upper shell and the lower shell, which is beneficial to improving the overall sealing performance of the filter housing.

[0009] Further, the long ring, the empty space ring, the short ring and the end ring are distributed counterclockwise in sequence, and there are two groups of them, all on the same horizontal plane.

[0010] Further, blind holes adapted to the annular rod are provided inside the end ring, and channels adapted to the annular rod are provided inside the empty space ring and the short ring.

[0011] A bag-type filter includes a filter element. A limiting bottom ring for limiting the bottom of the filter element is installed at the bottom of the inner wall of the lower shell. A limiting top ring for limiting the top of the filter element is provided inside the upper shell. A rubber block is connected between the top of the limiting top ring and the upper shell. Card slots with gradually decreasing inner diameters are provided near the filter element on both the limiting bottom ring and the limiting top ring. The stepped cross-section card slots are convenient for limiting filter elements with various outer diameters, so as to improve the applicability of the filter.

[0012] (III) Beneficial effects

[0013] The present utility model provides a filter housing and a bag-type filter. It has the following beneficial effects:

[0014] [[ID=IS]]1. For this filter housing and bag-type filter, by sequentially passing the annular rod through the empty space ring and the short ring until its end is inserted into the end ring, the connection between the upper shell and the lower shell can be completed. Conversely, it can be disassembled and cleaned. The operation is simple. At the same time, the annular rod extending into the end ring squeezes the airbag block, transferring the gas inside it to the annular airbag. The inflated annular airbag can fill the gap between the upper shell and the lower shell, ensuring the sealing performance of the filter housing after installation.

[0015] 2. For this filter housing and bag-type filter, the filter element is limited by the limiting bottom ring and the limiting top ring to prevent it from shifting during liquid flow and affecting the filtering effect. The stepped cross-section card slots on the limiting top ring and the limiting bottom ring are convenient for limiting filter elements with various outer diameters, so as to improve the applicable range of the bag-type filter for the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a longitudinal sectional view of the present utility model.

[0017] Figure 2 is a transverse sectional view of the present utility model.

[0018] Figure 3 is of the present utility model Figure 1 The enlarged schematic view at A in.

[0019] In the figure: 1. Upper shell; 2. Lower shell; 3. Long ring; 4. Short ring; 5. Empty position ring; 6. End ring; 7. Ring-shaped rod; 8. Airbag block; 9. Ring-shaped airbag; 10. Limit bottom ring; 11. Limit top ring; 12. Rubber block; 13. Screw rod; 14. Filter element. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] An embodiment of the present invention provides a capsule filter, as Figures 1-3 shown, which includes an upper shell 1 and a lower shell 2. An upper connecting pipe and an exhaust pipe are provided at the top of the upper shell 1, and a lower connecting pipe and a sewage discharge pipe are provided at the bottom of the lower shell 2. A ring-shaped airbag 9 is installed at the bottom of the upper shell 1. A long ring 3 and a short ring 4 are installed on the outer wall of the lower shell 2 and close to its connection with the upper shell 1. An empty position ring 5 and an end ring 6 are installed on the outer wall of the upper shell 1 and close to its connection with the lower shell 2. An airbag block 8 communicated with the ring-shaped airbag 9 through a conduit is installed in the end ring 6. A movable ring-shaped rod 7 is installed in the long ring 3. The end of the ring-shaped rod 7 sequentially enters the empty position ring 5, the short ring 4, and the end ring 6 to realize the connection between the upper shell 1 and the lower shell 2.

[0022] Specifically, a screw rod 13 is installed on the side wall of the ring-shaped rod 7. The end of the screw rod 13 extends outside the long ring 3. A screw ring is threadedly connected to the outer wall of the screw rod 13 and located outside the long ring 3. A strip-shaped through groove for the movement of the screw rod 13 is opened on the side wall of the long ring 3. By fluctuating the screw rod 13, the movement of the ring-shaped rod 7 can be driven, so that its end sequentially penetrates through the empty position ring 5 and the short ring 4 until it enters the end ring 6. Rotating the screw ring to abut against the outer wall of the long ring 3 can limit the movement of the ring-shaped rod 7. When installing the filter housing, only need to bring the upper shell 1 and the lower shell 2 close to each other and abut, and then sequentially penetrate the ring-shaped rod 7 through the empty position ring 5 and the short ring 4 until its end is inserted into the end ring 6, and tighten the screw ring to limit the movement of the ring-shaped rod 7 to complete the installation. The operation is simple. At the same time, the ring-shaped rod 7 extending into the end ring 6 squeezes the airbag block 8, transferring the gas inside it to the ring-shaped airbag 9. The inflated ring-shaped airbag 9 can fill the gap between the upper shell 1 and the lower shell 2, ensuring the sealing performance of the filter housing after installation.

[0023] Specifically, corresponding protrusions and grooves are provided on the adjacent sides of the upper shell 1 and the lower shell 2, increasing the contact area between the upper shell 1 and the lower shell 2, which is beneficial to improving the overall sealing performance of the filter housing.

[0024] Specifically, the long ring 3, the empty space ring 5, the short ring 4, and the end ring 6 are distributed counterclockwise in sequence, and there are two groups of them, all on the same horizontal plane.

[0025] Specifically, a blind hole adapted to the annular rod 7 is provided in the end ring 6, and channels adapted to the annular rod 7 are provided inside the empty space ring 5 and the short ring 4.

[0026] A capsule filter includes a filter element 14. A limiting bottom ring 10 for limiting the bottom of the filter element 14 is installed at the bottom of the inner wall of the lower housing 2. A limiting top ring 11 for limiting the top of the filter element 14 is provided inside the upper housing 1. A rubber block 12 is connected between the top of the limiting top ring 11 and the upper housing 1. The rubber block 12 is elastic and can improve the pressing and fixing effect on the filter element 14. Card slots with gradually decreasing inner diameters are provided at the positions where the limiting bottom ring 10 and the limiting top ring 11 are close to the filter element 14. The stepped cross-section card slots facilitate the limitation of filter elements 14 with various outer diameters, so as to improve the applicable range of the capsule filter for the filter element 14. At the same time, the limiting bottom ring 10 also increases the distance between the filter element 14 and the lower housing 2, leaving space for the filtered impurities to be discharged through the sewage discharge pipe.

[0027] Working principle: When installing the filter housing, only need to bring the upper housing 1 and the lower housing 2 close to each other and abut, then pass the annular rod 7 through the empty space ring 5 and the short ring 4 in sequence until its end is inserted into the end ring 6, and tighten the screw ring to limit the movement of the annular rod 7 to complete the installation. The operation is simple. At the same time, the annular rod 7 extending into the end ring 6 squeezes the airbag block 8, transferring the gas inside it to the annular airbag 9. The inflated annular airbag 9 can fill the gap between the upper housing 1 and the lower housing 2, ensuring the sealing performance of the filter housing after installation.

[0028] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to this process, method, article or device.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filter housing, comprising an upper housing (1) and a lower housing (2). An upper connecting pipe and an exhaust pipe are provided at the top of the upper housing (1), and a lower connecting pipe and a sewage discharge pipe are provided at the bottom of the lower housing (2), characterized in that: An annular airbag (9) is installed at the bottom of the upper housing (1). A long ring (3) and a short ring (4) are installed on the outer wall of the lower housing (2) near its connection with the upper housing (1). A vacant ring (5) and an end ring (6) are installed on the outer wall of the upper housing (1) near its connection with the lower housing (2). An airbag block (8) connected to the annular airbag (9) through a conduit is installed in the end ring (6). A movable annular rod (7) is installed in the long ring (3). The end of the annular rod (7) sequentially enters the vacant ring (5), the short ring (4) and the end ring (6) to realize the connection between the upper housing (1) and the lower housing (2).

2. The filter housing according to claim 1, characterized in that: A screw rod (13) is installed on the side wall of the annular rod (7). The end of the screw rod (13) extends outside the long ring (3). A screw ring is threadedly connected to the outer wall of the screw rod (13) and located outside the long ring (3). A strip-shaped through groove for the movement of the screw rod (13) is formed in the side wall of the long ring (3).

3. A filter housing according to claim 1, characterized in that: Corresponding protrusions and grooves are provided on the adjacent sides of the upper housing (1) and the lower housing (2).

4. A filter housing according to claim 1, wherein: The long ring (3), the vacant ring (5), the short ring (4) and the end ring (6) are distributed counterclockwise in sequence and there are two groups, all on the same horizontal plane.

5. The filter housing according to claim 1, wherein: A blind hole adapted to the annular rod (7) is formed in the end ring (6), and channels adapted to the annular rod (7) are formed inside the vacant ring (5) and the short ring (4).

6. A bladder filter, characterized in that: It includes a filter element (14) and the filter housing according to any one of claims 1-5. A limiting bottom ring (10) for limiting the bottom of the filter element (14) is installed at the bottom of the inner wall of the lower housing (2). A limiting top ring (11) for limiting the top of the filter element (14) is provided in the upper housing (1). A rubber block (12) is connected between the top of the limiting top ring (11) and the upper housing (1).

Images