Filter bag structure, percolator and drug-free concentration percolation device
By introducing recessed structures and counterweights into the filter bag structure, the problem of insufficient filter area is solved, achieving efficient filtration and long-life filter bag design within a limited space.
Patent Information
- Application Number
- CN202520081231.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-01-14
AI Technical Summary
Existing filter bag structures have limited filtration area for the same space, resulting in low filtration efficiency.
A recessed structure is introduced into the filter bag structure to divide the bag cavity into annular filter cavities, and a counterweight is set at the bottom to increase the filtration area. The design of the annular filter cavity and the counterweight maintain shape stability, thereby achieving high-efficiency filtration.
It significantly increases the filtration area of filter bags within a limited space, improves filtration efficiency, reduces the frequency of dust removal, and extends the service life of filter bags.
Smart Images
Figure CN223683123U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of percolation equipment, especially to filter bag structure, percolator and drug-free concentrated percolation device. BACKGROUND
[0002] In the field of solid-liquid separation, solid particles with a large specific gravity are usually separated by sedimentation (settling), and solid particles with a small specific gravity (floating) are usually separated by skimming from the surface of the liquid. For suspensions, common methods include plate-and-frame filter presses, disc vacuum filters, stacked screw machines, and bag-type filtration devices.
[0003] In a bag-type filtration device, the filter bag plays a key role in percolation. The conventional filter bag structure includes a bag body and an upper bag opening and a lower bag opening arranged at the top and bottom of the bag body. The bag body is supported and formed by a support ring or a support frame or other support structures. The filter bag structure of the prior art has the problem of limited or small filtering area under the condition of occupying a considerable space. SUMMARY
[0004] The filter bag structure, percolator, and drug-free concentrated percolation device provided by the embodiments of the present application can effectively increase the filtering area of the filter bag under the condition of occupying a considerable or the same space, and the percolation effect is better.
[0005] The first aspect of the embodiments of the present application provides a filter bag structure, which includes a fixed plate and a bag body. The bag body has a bag cavity with a top opening. The bag body is fixed to the bottom of the fixed plate through the top opening to block the top opening. The bottom of the bag body is provided with a recessed structure. The recessed structure is recessed from the bottom of the bag body towards the direction of the top opening, thereby separating the bag cavity into at least one annular filter cavity. The bottom of the recessed structure is fixedly connected to the fixed plate. The fixed plate is provided with a liquid outlet communicating with the annular filter cavity.
[0006] In a possible implementation, the bag body is a circular cylindrical bag body or an elliptical cylindrical bag body.
[0007] In a possible implementation, the annular filter cavity has one, and the recessed structure is located at the center of the bottom of the bag body.
[0008] In a possible implementation, the annular filter cavity has two or three, and the recessed structures are symmetrically or uniformly distributed on the bottom of the bag body.
[0009] In a possible implementation, the liquid outlet has two or more than two, and the liquid outlets are uniformly or symmetrically distributed along the annular direction of the annular filter cavity.
[0010] In a possible implementation, the bottom of the fixed plate is vertically connected with a hanging plate at a central position, and the bottom of the recess structure is connected with the hanging plate through a hanging bolt.
[0011] In a possible implementation, the counterweight is a counterweight steel ball, and the counterweights are uniformly distributed at the bottom of the annular filter cavity.
[0012] The second aspect of the embodiment of the present application provides a filter, which comprises a shell and the filter bag structure as described above, the shell has a shell cavity, the shell cavity has a top water outlet and a side water inlet, the side water inlet is close to the bottom of the shell, the bottom of the shell cavity is connected with a sludge bucket in a communicating manner, the bottom of the sludge bucket is provided with an on-off valve, a connecting flower plate is arranged in the shell cavity, and the filter bag structure is located in the shell cavity and connected to the bottom of the connecting flower plate through the fixed plate.
[0013] In a possible implementation, the connecting flower plate is distributed in a staggered manner in the height direction of the shell, and a plurality of filter bag structures are connected to different height positions of the connecting flower plate in a staggered manner.
[0014] The third aspect of the embodiment of the present application provides a drug-free concentrated filter device, which comprises a wet dust removal gas washing machine, a circulating water tank and the filter as described above, wherein a sewage pump is arranged in the circulating water tank, the water outlet of the sewage pump is connected with the side water inlet through a water supply pipe, the top water outlet is connected with the water inlet of the wet dust removal gas washing machine through a water inlet pipe, the bottom water return of the wet dust removal gas washing machine is connected with the circulating water tank through a water return pipe, and a screw pump is arranged below the filter to discharge the sludge from the sludge bucket.
[0015] Beneficial effects: compared with the prior art, the filter bag structure, the filter and the drug-free concentrated filter device provided by the present application can greatly improve the filtering area of the bag body in a limited space range by arranging the recess structure at the bottom of the bag body and dividing the bag cavity into at least one annular filter cavity.
[0016] These and other objects, features and advantages of the present application will become apparent with reference to the following detailed description. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 A cross-sectional structure schematic diagram of the filter bag structure of the present application is shown.
[0018] Figure 2 A top view structure schematic diagram of the filter bag structure of the present application is shown.
[0019] Figure 3 A bottom view structure schematic diagram of the filter bag structure of the present application is shown.
[0020] Figure 4 The application shows the bottom view structure diagram of the filter bag structure in other cases.
[0021] Figure 5 The application shows the cross-sectional structure diagram of the filter.
[0022] Figure 6 The application shows the structure diagram of the drug-free concentrated filter device DETAILED DESCRIPTION
[0023] The following description is used to disclose the utility model so that those skilled in the art can realize the utility model. The preferred embodiments in the following description are only as examples, and other obvious modifications can be thought of by those skilled in the art. The basic principles of the utility model defined in the following description can be applied to other embodiments, modifications, improvements, equivalents and other technical solutions without departing from the spirit and scope of the utility model.
[0024] Those skilled in the art should understand that in the disclosure of the specification, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the above-mentioned terms cannot be understood as a limitation of the utility model.
[0025] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number.
[0026] Reference Figures 1 to 3In a first aspect, the application provides a filter bag structure, which comprises a fixing plate 10 and a bag body 20. The bag body 20 has a bag cavity 201, and the bag cavity 201 has a top opening 202. The bag body 20 is fixed to the bottom of the fixing plate 10 through the top opening 202 to seal the top opening 202 and fix the bag body. The bottom of the bag body 20 is provided with a recess structure 21, and the recess structure 21 is recessed from the bottom of the bag body 20 towards the direction of the top opening 202, thereby dividing the bag cavity 201 into at least one annular filter cavity 2011. Compared with the conventional bag body structure, the annular filter cavity 2011 can form additional filtration surfaces on the inner surface of the recess structure on the basis of the conventional outer surface, thereby substantially increasing the filtration area of the bag body 20 by a multiple, wherein the specific multiple is positively correlated with the number of the recess structure 21. The bottom of the recess structure 21 is fixedly connected to the fixing plate 10, that is, the recess structure 21 extends to the fixing plate 10 and is fixedly connected to the fixing plate 10. The bottom of the annular filter cavity 2011 is provided with a counterweight 22 for providing counterweight below, so that the annular filter cavity 2011 can be substantially kept within a certain shape range to ensure the filtration area. In the case of gravity or pressure and fluctuating water pressure, an elastic filtration surface can be formed on the surface of the bag body 20 (including the outer surface and the inner surface of the recess structure). Therefore, any form of dust removal mechanism is not required. When the accumulated dust on the filtration surface reaches a certain limit, the dust can be automatically stripped under the action of potential energy (potential energy is the energy stored due to the change of position and shape). When the dust is stripped, the surrounding liquid will be disturbed, thereby forming a chain reaction or avalanche effect. Therefore, it can be ensured that the bag body has not only a large specific surface area, small and constant resistance, but also a long service life without replacement for a long period of time. The fixing plate 10 is provided with a liquid outlet 101 which communicates with the annular filter cavity 2011.
[0027] In one embodiment, the bag body 20 is a circular cylindrical bag body or an elliptical cylindrical bag body.
[0028] As a preferred embodiment, the annular filter cavity 2011 has one, and the recess structure 21 is located at the center of the bottom of the bag body 20.
[0029] As another preferred embodiment, in combination Figure 4 , the annular filter cavity 2011 has two or three, and the recess structures 21 are symmetrically distributed or uniformly distributed on the bottom of the bag body 20, thereby further increasing the filtration area, wherein adjacent annular filter cavities 2011 share or use the same boundary.
[0030] In one embodiment, the liquid outlet 101 has two or more, and the liquid outlet 101 is uniformly distributed or symmetrically distributed along the ring direction of the annular filter cavity 2011, so as to discharge the percolated liquid as soon as possible.
[0031] In one embodiment, the bottom of the fixed plate 10 is vertically connected with a hanging plate 11 at the center position, and the bottom of the recess structure 21 is connected with the hanging plate 11 through a hanging bolt 12, so as to facilitate the fixation and shape retention of the recess structure 21, and facilitate the maintenance.
[0032] In one embodiment, the counterweight 22 is a counterweight steel ball, and the counterweight 22 is uniformly distributed on the bottom of the annular filter cavity 2011.
[0033] In combination Figure 5 , the second aspect of the embodiment of the present application provides a percolator 100, which comprises a shell 110 and a filter bag structure as described above, wherein the shell 110 has a shell cavity, and the shell cavity has a top water outlet 1011 and a side water inlet 1012, wherein the side water inlet 1012 is close to the bottom of the shell 110, wherein the bottom of the shell cavity is connected with a coal slurry hopper 120 in a communicating manner, wherein the bottom of the coal slurry hopper 120 is provided with an on-off valve 121, such as a manual butterfly valve, for controlling the discharge of coal slurry from the coal slurry hopper 120, wherein the shell cavity is provided with a connecting flower plate 130, and the filter bag structure is located in the shell cavity and connected to the bottom of the connecting flower plate 130 through the fixed plate 10. The advantages of the percolator 100 have been basically embodied by the filter bag structure, and will not be described in detail here.
[0034] Further preferably, the connecting flower plate 130 is distributed in a staggered manner in the height direction of the shell 110, and the filter bag structure has a plurality of filter bag structures, and the plurality of filter bag structures are connected to different height positions of the connecting flower plate 130 in a staggered manner, so as to enable the percolator 100 to perform more sufficient percolation work.
[0035] In combination Figure 6In the third aspect, the application provides a drug-free concentrated percolation device, which comprises a wet dust removal gas washer 200, a circulating water tank 300 and the percolation filter 100 as described above, wherein the circulating water tank 300 is provided with a sewage pump 310, and the outlet of the sewage pump 310 is connected to the side water inlet 1012 through a water supply pipe 320, so as to deliver the slime water to the percolation filter 100; the top water outlet 1011 is connected to the water inlet of the wet dust removal gas washer 200 through an upper water pipe 210, so as to deliver the filtered slime water to the wet dust removal gas washer 200; the bottom backwater outlet of the wet dust removal gas washer 200 is connected to the circulating water tank 300 through a backwater pipe 220, so as to form a complete and repeated circulating slime water separation system. After the percolation filter 100 is operated for a certain period of time, a certain amount of viscous slime will accumulate in the slime hopper 120, and the viscous slime needs to be discharged at regular intervals. Therefore, the screw pump 140 is installed below the percolation filter 100, so as to discharge the viscous slime from the slime hopper 120.
[0036] It should be understood by those skilled in the art that the embodiments of the application described above and shown in the drawings are only examples and do not limit the application. The advantages of the application have been fully and effectively realized. The functions and structural principles of the application have been shown and described in the embodiments, and the embodiments of the application can be modified or changed in any way without departing from the principles.
Claims
1. A filter bag construction, characterized in that The filter bag structure comprises a fixed plate and a bag body, the bag body has a bag cavity, the bag cavity has a top opening, the bag body is fixed to the bottom of the fixed plate through the top opening to block the top opening, the bottom of the bag body is provided with a recess structure, the recess structure is recessed from the bottom of the bag body towards the direction of the top opening to divide the bag cavity into at least one annular filter cavity, the bottom of the recess structure is fixedly connected to the fixed plate, and the bottom of the annular filter cavity is provided with a counterweight.
2. The bag structure of claim 1, wherein The bag body is a circular cylindrical bag body or an oval cylindrical bag body.
3. The bag structure of claim 2, wherein, The annular filter cavity has one, and the recess structure is located at the center of the bottom of the bag body.
4. The bag structure of claim 2, wherein, The annular filter cavity has two or three, and the recess structures are symmetrically or uniformly distributed on the bottom of the bag body.
5. The bag-in-bag structure of claim 3 or 4, wherein The liquid outlet has two or more, and the liquid outlets are uniformly or symmetrically distributed along the annular direction of the annular filter cavity.
6. The bag structure of claim 5, wherein, The bottom of the fixed plate is vertically connected with a hanging plate at the center position, and the bottom of the recess structure is connected with the hanging plate through a hanging bolt.
7. The bag construction of claim 1 wherein, The counterweight is a counterweight steel ball, and the counterweights are uniformly distributed on the bottom of the annular filter cavity.
8. A filter, characterized by The filter bag structure comprises a shell and the filter bag structure according to any one of claims 1 to 7, the shell has a shell cavity, the shell cavity has a top water outlet and a side water inlet, the side water inlet is close to the bottom of the shell, the bottom of the shell cavity is connected with a coal slurry hopper in a communicating manner, the bottom of the coal slurry hopper is provided with an on-off valve, a connecting flower plate is arranged in the shell cavity, and the filter bag structure is located in the shell cavity and connected to the bottom of the connecting flower plate through the fixed plate.
9. The percolator of claim 8, wherein, The connecting flower plate is distributed in a staggered manner in the height direction of the shell, and the filter bag structure has a plurality of filter bag structures connected to different height positions of the connecting flower plate in a staggered manner.
10. A drug-free concentration diafiltration apparatus characterized by, The filter bag structure comprises a wet dust removal gas washing machine, a circulating water tank and the filter bag structure according to claim 8 or 9, a sewage pump is arranged in the circulating water tank, the water outlet of the sewage pump is connected with the side water inlet through a water supply pipe, the top water outlet is connected with the water inlet of the wet dust removal gas washing machine through a water inlet pipe, the bottom water return port of the wet dust removal gas washing machine is connected with the circulating water tank through a water return pipe, and a screw pump is arranged below the filter bag structure to discharge coal slurry from the coal slurry hopper.