An adjustable baghouse filter
The adjustable bag filter, controlled by an independent dispensing pipe and valve, solves the flow regulation problem of traditional multi-bag filters in low-flow scenarios, achieving flexible adjustment and resource saving, and improving filtration efficiency and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANXI QINHANG PETRIFACTION TECH CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-07-24
AI Technical Summary
Traditional multi-bag filters cannot flexibly adjust the flow rate in low-flow scenarios, leading to overuse of filter bags and waste of resources.
An adjustable bag filter was designed, which controls the liquid flow through an independent distribution pipe and valve. Combined with a sealing structure, it ensures the flexibility and sealing of the filtration process. The filter bag is fixed with an annular pressure pad and a horizontal pin, achieving precise flow control and stable fixation.
It enables flexible adjustment under different flow scenarios, avoids overuse of filter bags, saves resources, reduces costs, and improves filtration efficiency and stability.
Smart Images

Figure CN224541113U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of filtration technology, and in particular to an adjustable bag filter. Background Technology
[0002] In the field of liquid filtration, bag filters are widely used. Currently, bag filters are mainly divided into two types: single-bag and multi-bag. Single-bag filters are known for their high filtration accuracy and perform excellently in fine filtration; however, their throughput is relatively limited, making them inadequate for large-scale liquid processing needs. In contrast, multi-bag filters, with the collaborative work of multiple filter bags, have the advantage of large throughput and are particularly suitable for filtering large volumes of liquids. They can efficiently complete the filtration of large quantities of liquid and effectively meet the requirements of use in various environments.
[0003] However, in practical applications, especially in low-flow scenarios, the limitations of multi-bag filters become increasingly apparent. Due to their design, they cannot be flexibly adjusted according to the actual flow rate. This means that in low-flow conditions, all filter bags must be used for every filtration operation, regardless of whether the actual flow rate requires such a high filtration capacity. This method of using all bags not only leads to overuse of filter bags but also wastes resources, increases operating costs, and hinders the rational use of resources and the optimization of filtration efficiency. Utility Model Content
[0004] To address the shortcomings of the aforementioned background technology, this utility model provides an adjustable bag filter.
[0005] The technical solution is as follows: An adjustable bag filter includes a filter cartridge, a cartridge cover, and a filter assembly. A lower sealing plate for fixing the filter assembly is provided at the top of the filter cartridge. The lower sealing plate has multiple mounting holes, each housing a filter assembly. The filter assembly includes a filter basket, a filter bag placed in the filter basket, and a clamping element for sealing the filter bag. A partition is provided on the top surface of the lower sealing plate to separate the mounting holes. The bottom of the partition is sealed to the lower sealing plate, its side is sealed to the inner wall of the filter cartridge, and a sealing strip is installed on its top. The cartridge cover operatively closes the opening of the filter cartridge. An upper sealing plate and multiple distribution pipes are provided at the bottom of the cartridge cover. Multiple vertical holes for fixing the distribution pipes are provided on the upper sealing plate. The multiple distribution pipes are connected to a main supply pipe. Each distribution pipe is equipped with a separate valve, the control rod of which extends to the outside of the cartridge cover. When the cartridge cover is closed, the upper end of each mounting hole corresponds to at least one distribution pipe outlet, and the partition and the upper sealing plate are sealed by the sealing strip.
[0006] Preferably, the filter cartridge is provided with an inlet pipe at the top and an outlet pipe at the bottom, and a liquid supply channel is formed on the cartridge cover. One end of the liquid supply channel is connected to the main liquid supply pipe, and the other end is connected to the inlet pipe when the cartridge cover is closed.
[0007] Preferably, the clamping component includes an annular pressure pad and a horizontal pin, the horizontal pin being disposed at the upper end of the annular pressure pad, and limiting rods for limiting the position of the horizontal pin being provided on opposite sides of the upper end of the mounting hole.
[0008] Preferably, the number of the liquid distribution tubes is the same as the number of mounting holes.
[0009] Preferably, the valve used is a ball valve.
[0010] Preferably, the sealing strip is made of an elastic material.
[0011] The beneficial effects of this utility model are:
[0012] 1. This utility model uses an independent valve on the liquid distribution pipe to flexibly select to open part or all of the liquid distribution pipe, thereby precisely controlling the amount of liquid entering the filter assembly. This avoids the problem of traditional multi-bag filters having to use all filter bags because the flow rate cannot be adjusted. In addition, the partition and the upper sealing plate are sealed with a sealing strip to ensure the sealing and reliability of the filtration process.
[0013] 2. The liquid inlet pipe of this utility model, combined with the liquid supply channel on the cylinder cover, forms a complete liquid inflow path, enabling the liquid to enter the filter interior efficiently and smoothly and be distributed to each distribution pipe through the main liquid supply pipe. This further optimizes the flow efficiency and uniformity of the liquid in the filter, ensuring a more stable and efficient filtration process and improving the overall performance of the filter.
[0014] 3. This utility model adopts a clamping structure of annular pressure pad and horizontal pin, which, together with the limiting rod, can more firmly fix the filter bag and prevent the filter bag from shifting or loosening due to liquid impact during the filtration process, thereby ensuring the stability and consistency of the filtration effect.
[0015] 4. Each filter component of this utility model is equipped with an independent liquid distribution tube, which realizes the precise correspondence between the filter component and the liquid distribution, further improving the flexibility and accuracy of flow regulation, and enabling flexible adjustment of the usage status of each filter component according to different needs. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0017] Figure 2 This invention relates to a localized explosion.
[0018] Figure 3 This is a schematic diagram of the structure of the filter assembly of this utility model.
[0019] Figure 4 This is a schematic diagram of the closed cylinder cover structure of this utility model.
[0020] Figure 5 This is a schematic diagram of the structure of the partition plate with the sealing strip installed at the upper end.
[0021] Explanation of reference numerals in the attached drawings: 1_Filter cartridge, 11_Inlet pipe, 12_Outlet pipe, 2_Cylinder cover, 21_Supply channel, 3_Filter assembly, 31_Filter basket, 32_Filter bag, 33_Clamping component, 331_Annular pressure pad, 332_Horizontal pin, 34_Limiting rod, 4_Lower sealing plate, 41_Mounting hole, 42_Baffle plate, 5_Sealing strip, 6_Upper sealing plate, 61_Vertical hole, 7_Divider pipe, 71_Main supply pipe, 72_Valve. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] This embodiment provides an adjustable bag filter, designed to solve the problem of traditional multi-bag filters being unable to flexibly adjust the flow rate in low-flow scenarios, leading to overuse of filter bags and resource waste. Its structure is as follows: Figure 1-5 As shown, the system includes a filter cartridge 1, a cover 2, and a filter assembly 3. A lower sealing plate 4 is installed at the top inside the filter cartridge 1, with multiple mounting holes 41. One filter assembly 3 is installed in each mounting hole 41. See the attached document for details. Figure 3 The filter assembly 3 consists of a filter basket 31, a filter bag 32, and a clamping component 33. The clamping component 33 includes an annular pressure pad 331 and a horizontal pin 332. The horizontal pin 332 is located at the upper end of the annular pressure pad 331. Limiting rods 34 fixed on both sides of the upper end of the mounting hole 41 are used to limit the position of the horizontal pin 332, thereby sealing and fixing the filter bag 32.
[0024] A partition 42 is provided on the top surface of the lower sealing plate 4, and its bottom is welded and sealed to the lower sealing plate 4. Its sides are welded and sealed to the inner wall of the filter cartridge 1. A sealing strip 5 made of elastic material is installed on the top. The cartridge cover 2 can operably close the opening of the filter cartridge 1, specifically connected to the filter cartridge 1 via a pin and a lifting ring. The bottom of the cartridge cover 2 is provided with an upper sealing plate 6 and multiple liquid distribution pipes 7, among which, for example... Figure 2As shown, the vertical hole 61 on the upper sealing plate 6 is used to fix the dispensing pipe 7. Multiple dispensing pipes 7 are connected to the main supply pipe 71. A valve 72 is installed on each dispensing pipe 7, specifically a ball valve, whose control rod extends to the outside of the cylinder cover 2. When the cylinder cover 2 is closed, the upper end of each mounting hole 41 corresponds to at least one outlet of a dispensing pipe 7. For details, please refer to [reference needed]. Figure 1 and Figure 5 The partition 42 and the upper sealing plate 6 are sealed by the sealing strip 5.
[0025] Furthermore, it should be noted that the filter cartridge 1 has an inlet pipe 11 at the top and an outlet pipe 12 at the bottom. A liquid supply channel 21 is formed on the cover 2, one end of which is connected to the main liquid supply pipe 71. When the cover 2 is closed, the other end of the liquid supply channel 21 is connected to the inlet pipe 11. The number of distribution pipes 7 is the same as the number of mounting holes 41, ensuring that each filter component 3 is equipped with an independent distribution pipe 7, thereby achieving precise flow control.
[0026] In practical applications, based on the liquid flow requirements, the ball valves 72 on each dispensing pipe 7 can be controlled to flexibly select whether to open part or all of the dispensing pipes 7, thereby precisely controlling the amount of liquid entering the filter assembly 3. For example, in low-flow scenarios, only some ball valves 72 need to be opened to make the corresponding dispensing pipes 7 and filter assembly 3 work, while the remaining filter bags 32 remain idle, avoiding overuse of the filter bags 32, extending their service life, and reducing resource waste and operating costs.
[0027] The adjustable bag filter provided by this utility model has a compact structure and cleverly solves the adaptability problem of traditional multi-bag filters under different flow scenarios. It not only has a large flow processing capacity, but can also be flexibly adjusted when there is a small flow demand, effectively saving resources and reducing operating costs.
[0028] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the inventive concept, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.
Claims
1. An adjustable bag filter, comprising a filter cartridge (1), a cartridge cover (2), and a filter assembly (3), wherein a lower sealing plate (4) for fixing the filter assembly (3) is provided at the top of the filter cartridge (1), and a plurality of mounting holes (41) are provided on the lower sealing plate (4), wherein a filter assembly (3) is installed in each mounting hole (41), wherein, The filter assembly (3) includes a filter basket (31), a filter bag (32) disposed in the filter basket (31), and a clamping member (33) for sealing the filter bag (32); The feature is that the top surface of the lower sealing plate (4) is provided with a partition (42) for separating each mounting hole (41), the bottom of the partition (42) is sealed to the lower sealing plate (4), the side is sealed to the inner wall of the filter cartridge (1), and a sealing strip (5) is installed on the top. The cover (2) operably closes the opening of the filter cartridge (1). The bottom of the cover (2) is provided with an upper sealing plate (6) and multiple liquid distribution pipes (7). The upper sealing plate (6) has multiple vertical holes (61) for fixing the liquid distribution pipes (7). The multiple liquid distribution pipes (7) are connected to a main liquid supply pipe (71). Each liquid distribution pipe (7) is equipped with a separate valve (72). The control rod of the valve (72) extends to the outside of the cover (2). When the cover (2) is closed, the upper end of each mounting hole (41) corresponds to at least one liquid distribution pipe (7) outlet, and the partition (42) and the upper sealing plate (6) are sealed by a sealing strip (5).
2. The adjustable bag filter according to claim 1, characterized in that, The filter cartridge (1) is provided with an inlet pipe (11) at the top and an outlet pipe (12) at the bottom. A liquid supply channel (21) is formed on the cover (2). One end of the liquid supply channel (21) is connected to the main liquid supply pipe (71). When the cover (2) is closed, the other end is connected to the inlet pipe (11).
3. The adjustable bag filter according to claim 1 or 2, characterized in that, The clamping component (33) includes an annular pressure pad (331) and a horizontal pin (332). The horizontal pin (332) is disposed at the upper end of the annular pressure pad (331). Limiting rods (34) for limiting the position of the horizontal pin (332) are respectively provided on opposite sides of the upper end of the mounting hole (41).
4. The adjustable bag filter according to claim 1, characterized in that, The number of the liquid distribution tubes (7) is the same as the number of the mounting holes (41).
5. The adjustable bag filter according to claim 1, characterized in that, The valve (72) is a ball valve.
6. The adjustable bag filter according to claim 1, characterized in that, The sealing strip (5) is made of elastic material.