Inner core structure of a bag filter can
By adding an inner core structure inside the bag filter canister, the problems of filter bag clogging and frequent replacement are solved, resulting in a larger filtration area and higher precision filtration effect, improved filtration speed and reduced replacement frequency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 杨川
- Filing Date
- 2025-07-07
- Publication Date
- 2026-06-23
AI Technical Summary
Existing bag filter canisters are prone to clogging due to external size limitations, which affects filtration speed and efficiency, and requires frequent replacement.
An internal core structure, including an outer sleeve, an inner sleeve, and connecting plates, is added inside the tank. The filter bags are fixed with bolts to increase the filtration area and enable quick installation and disassembly.
Without increasing the external space of the tank, the interception area of the filter bag is increased, and a higher precision filter bag is used, which improves the filtration effect and speed and reduces the number of replacements.
Smart Images

Figure CN224388197U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of filter cans, specifically, it relates to the inner core structure of a bag filter can. Background Technology
[0002] Bag filter tanks are a type of efficient and flexible liquid filtration equipment, widely used in chemical, food and beverage, pharmaceutical, and environmental protection industries.
[0003] To save space, most bag filter canisters on the market are designed with smaller external dimensions, so the size and area of the internal filter bags are also relatively small. If higher precision filter bags are used, they will easily become clogged, which will not only affect the filtration speed and effect, but also waste a lot of time in daily continuous use by frequently replacing the filter bags.
[0004] In view of this, this utility model is hereby proposed. Utility Model Content
[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:
[0006] An inner core structure for a bag filter canister includes:
[0007] The tank is a hollow tank with an open top. The top of the tank is fitted with a sealing cap, and the bottom of the tank is open. The outer arc surface of the tank has a water inlet.
[0008] The inner core structure is set inside the cavity of the tank to fix the filter bag. The inner core structure includes: an outer sleeve, a first filter hole, an inner sleeve, and a third filter hole. The outer sleeve is fixedly connected to the cavity of the tank. The first filter hole is opened through the wall of the outer sleeve. The inner sleeve is set inside the cavity of the outer sleeve. The third filter hole is opened through the wall of the inner sleeve. The filter bag is installed inside the cavity of the outer sleeve.
[0009] In a preferred embodiment of the present invention, the outer jacket is in the shape of a hollow cylindrical tube, the first filter hole is in the shape of a circular hole, the first filter hole is opened on the outer arc surface of the outer jacket, and multiple identical first filter holes are arranged in a ring array on the outer arc surface of the outer jacket.
[0010] In a preferred embodiment of the present invention, the inner sleeve is a hollow cylindrical shape with an open bottom, and the third filter hole is opened on the arc surface and top of the inner sleeve, and multiple identical third filter holes are evenly opened on the wall surface of the inner sleeve.
[0011] In a preferred embodiment of the present invention, the inner core structure further includes a connecting plate and a second filter hole. The connecting plate is fixedly connected to the bottom of the outer sleeve, the second filter hole is opened through the wall of the connecting plate, and the inner sleeve is fixedly connected to the top of the connecting plate.
[0012] As a preferred embodiment of the present utility model, the connecting plate is an annular plate. The outer arc surface of the connecting plate can be dimensionally fitted with the wall surface of the bottom opening of the outer sleeve, and the inner arc surface of the connecting plate can be dimensionally fitted with the size of the bottom opening of the inner sleeve. The second filter holes are circular holes, and a plurality of the same second filter holes are penetrated through the wall surface of the connecting plate.
[0013] As a preferred embodiment of the present utility model, a fixing structure is further provided in the cavity of the tank body. The fixing structure includes: fixing blocks and bolts. The fixing blocks are symmetrically and fixedly connected to the inner wall surface of the cavity of the tank body, and the bolts are respectively threadedly connected to the tops of each fixing block. The symmetric fixing blocks are located above the outer sleeve.
[0014] As a preferred embodiment of the present utility model, the fixing block is a block with a U-shaped cross-section with an open bottom. The bolt can penetrate through the top of the fixing block, and the bottom of the bolt can contact the top of the outer sleeve.
[0015] The present utility model has the following beneficial effects compared with the prior art:
[0016] 1. By adding an inner core structure inside the tank body, without changing the external space and dimensions of the filter tank, the method of folding back and installing the filter bag can be used to install a longer filter bag, doubling the interception area of the filter bag compared to the original, so that a filter bag made of a higher-precision material can be used, improving both the filtering effect and speed, and reducing the number of filter bag replacements. Therefore, a lot of time is saved during continuous use.
[0017] 2. By providing a fixing structure, the quick installation and disassembly of the filter bag are realized by using symmetrically movable bolts, facilitating the replacement of the filter bag.
[0018] The following further describes in detail the specific embodiments of the present utility model with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In the accompanying drawings:
[0020] Figure 1 is a three-dimensional view of the present utility model;
[0021] Figure 2 is an exploded view of the top structure of the tank body of the present utility model;
[0022] Figure 3 is a schematic diagram of the position of the outer sleeve of the present utility model;
[0023] Figure 4 is a three-dimensional view of the outer sleeve of the present utility model;
[0024] Figure 5 is a bottom three-dimensional view of the outer sleeve of the present utility model.
[0025] In the diagram: 20, tank body; 30, outer casing; 31, first filter hole; 32, connecting plate; 33, second filter hole; 34, inner casing; 35, third filter hole; 36, solid block; 37, bolt. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.
[0027] like Figure 1 , Figure 2 and Figure 3 As shown, the inner core structure of a bag filter tank includes: a tank body 20, which is a hollow tank with an open top. A sealing cover is installed on the top of the tank body 20, and the bottom of the tank body 20 is open. A water inlet is provided on the outer arc surface of the tank body 20, and the water inlet of the tank body 20 is connected to a water supply pipe. This is existing technology, so it will not be described in detail here.
[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the inner core structure is set inside the cavity of the tank 20 to fix the filter bag. The inner core structure includes: an outer sleeve 30, a first filter hole 31, an inner sleeve 34, and a third filter hole 35. The outer sleeve 30 is fixedly connected to the cavity of the tank 20. The first filter hole 31 is opened through the wall of the outer sleeve 30. The inner sleeve 34 is set inside the cavity of the outer sleeve 30. The third filter hole 35 is opened through the wall of the inner sleeve 34. The filter bag is installed inside the cavity of the outer sleeve 30.
[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the outer sleeve 30 is a hollow cylindrical tube, and the first filter hole 31 is a circular hole. The first filter hole 31 is opened on the outer arc surface of the outer sleeve 30, and multiple identical first filter holes 31 are arranged in a circular array on the outer arc surface of the outer sleeve 30. The inner sleeve 34 is a hollow cylindrical tube with an open bottom. The third filter hole 35 is opened on the arc surface and top of the inner sleeve 34, and multiple identical third filter holes 35 are evenly opened on the wall surface of the inner sleeve 34. The inner core structure also includes a connecting plate 32 and a second filter hole 33. The connecting plate 32 is fixedly connected to the bottom of the outer sleeve 30, and the second filter hole 33 is opened through the wall surface of the connecting plate 32. The inner sleeve 34 is fixedly connected to the connecting plate 32. The top of the plate 32 is a ring-shaped plate. The outer arc surface of the connecting plate 32 can fit the size of the bottom opening wall of the outer sleeve 30, and the inner arc surface of the connecting plate 32 can fit the size of the bottom opening of the inner sleeve 34. The second filter hole 33 is a round hole. Multiple identical second filter holes 33 are opened through the wall of the connecting plate 32. The cavity of the tank body 20 is also provided with a fixing structure, which includes: a fixing block 36 and a bolt 37. The fixing blocks 36 are symmetrically fixed to the inner wall of the cavity of the tank body 20, and the bolts 37 are threaded to the top of each fixing block 36. The symmetrical fixing blocks 36 are located above the outer sleeve 30.
[0030] In practical use, first remove the sealing cap at the bottom of the tank 20, then align the opening of the filter bag to be installed with the top of the outer sleeve 30 and place its opening between the top of the outer sleeve 30 and the bottom of the bolt 37. Then rotate the bolt 37 so that the symmetrical bolts 37 press the filter bag on the top of the outer sleeve 30. At this time, the bottom of the filter bag will be held in place by the inner sleeve 34. Manually adjust the filter bag to fit against the inner wall of the outer sleeve 30 and the outer arc surface of the inner sleeve 34 to complete the installation of the filter bag. Then reinstall the sealing cap on the top of the tank 20. When water is introduced into the tank 20, the water will be filtered by the filter bag in the tank 20. The water filtered by the filter bag will pass through the first filter hole 31, the second filter hole 33 and the third filter hole 35 and then flow out towards the bottom opening of the tank 20.
[0031] In summary, by adding an inner core structure inside the tank 20, and without changing the external space and size of the filter tank, a longer filter bag can be installed by folding it back. This doubles the interception area of the filter bag, allowing the use of filter bags made of higher precision materials. This improves the filtration effect and speed, and reduces the frequency of filter bag replacements, thus saving considerable time during continuous use.
[0032] like Figure 3 and Figure 4 As shown, the solid block 36 is a block with an opening facing downwards in a U-shaped cross section. The bolt 37 can penetrate through the top of the solid block 36, and the bottom of the bolt 37 can contact the top of the outer sleeve 30.
[0033] In practical use, when installing the filter bag, after attaching the bag opening to the top of the outer casing 30, rotate the symmetrical bolts 37 downwards to install the filter bag by pressing it against the bolts 37. When removing the filter bag, loosen the bolts 37 to unlock the filter bag.
[0034] In summary, by setting up a fixed structure and using symmetrical movable bolts 37, the filter bag can be quickly installed and removed, thus facilitating the replacement of the filter bag.
[0035] Working principle: Remove the sealing cap at the bottom of the tank 20, then align the opening of the filter bag to be installed with the top of the outer sleeve 30 and place the opening between the top of the outer sleeve 30 and the bottom of the bolt 37. Then rotate the bolt 37 so that the symmetrical bolts 37 press the filter bag onto the top of the outer sleeve 30. At this time, the bottom of the filter bag will be held in place by the inner sleeve 34. Manually adjust the filter bag to fit against the inner wall of the outer sleeve 30 and the outer arc surface of the inner sleeve 34 to complete the installation of the filter bag.
[0036] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.
Claims
1. The inner core structure of a bag filter canister, characterized in that, Comprising: A tank body (20), the tank body (20) is a hollow tank body with an open top. A sealing cover is installed at the top of the tank body (20). The bottom of the tank body (20) is in an open state, and a water inlet is provided on the outer arc surface of the tank body (20). An inner core structure, which is arranged in the cavity of the tank body (20) for fixing the filter bag. The inner core structure includes: an outer sleeve (30), a first filter hole (31), an inner sleeve (34) and a third filter hole (35). The outer sleeve (30) is fixedly connected in the cavity of the tank body (20). The first filter hole (31) is贯穿开设在外套(30)的壁面,内套(34)设置在外套(30)的腔内,第三滤孔(35)贯穿开设在内套(34)的壁面,过滤袋安装在外套(30)的腔内。 2. The inner core structure of a bag filter can according to claim 1, characterized in that, The outer sleeve (30) is in the shape of a hollow circular tube, the first filter hole (31) is in the shape of a circular hole, and the first filter hole (31) is opened on the outer arc surface of the outer sleeve (30). A plurality of the same first filter holes (31) are arranged in an annular array on the outer arc surface of the outer sleeve (30).
3. The inner core structure of a bag filter can according to claim 1, characterized in that, The inner sleeve (34) is in the shape of a hollow cylinder with an open bottom. The third filter hole (35) is opened on the arc surface and the top of the inner sleeve (34). A plurality of the same third filter holes (35) are evenly opened on the wall surface of the inner sleeve (34).
4. The inner core structure of a bag filter can according to claim 1, characterized in that, The inner core structure further includes a connecting plate (32) and a second filter hole (33). The connecting plate (32) is fixedly connected to the bottom of the outer sleeve (30). The second filter hole (33) is贯穿开设在连板(32)的壁面,内套(34)固定连接在连板(32)的顶部。 5. The inner core structure of a bag filter can according to claim 4, characterized in that, The connecting plate (32) is in the shape of an annular plate. The outer arc surface of the connecting plate (32) can be dimensionally fitted with the wall surface of the bottom opening of the outer sleeve (30). The inner arc surface dimension of the connecting plate (32) can be dimensionally fitted with the bottom opening dimension of the inner sleeve (34). The second filter hole (33) is in the shape of a circular hole, and a plurality of the same second filter holes (33) are贯穿开设在连板(32)的壁面。 6. The inner core structure of a bag filter can according to claim 1, characterized in that, A fixing structure is further arranged in the cavity of the tank body (20). The fixing structure includes: a fixing block (36) and a bolt (37). The fixing blocks (36) are symmetrically fixedly connected to the inner wall surface of the cavity of the tank body (20). The bolts (37) are respectively threadedly connected to the tops of each fixing block (36). The symmetric fixing blocks (36) are located above the outer sleeve (30).
7. The inner core structure of a bag filter can according to claim 6, characterized in that, The fixing block (36) is in the shape of a block with a匚字形截面 and an open bottom. The bolt (37) can penetrate from the top of the fixing block (36), and the bottom of the bolt (37) can contact the top of the outer sleeve (30). It should be noted that there are some inaccuracies in the original Chinese text you provided. For example, in the description of the inner core structure in , the description of "贯穿开设在外套(30)的壁面,内套(34)设置在外套(30)的腔内,第三滤孔(35)贯穿开设在内套(34)的壁面,过滤袋安装在外套(30)的腔内。" is not complete and clear in expression. I have tried my best to translate according to the existing content.