A base assembly in an automatic cleaning filter

Abstract

The utility model discloses a base subassembly in automatic cleaning filter, including base, be equipped with the open slot for installing filter cylinder subassembly in the middle of base, be equipped with the outer installation groove and the inner installation groove of the concentricity setting in the open slot, the shell of filter cylinder subassembly is fixedly connected with base through the outer installation groove, the first filter skeleton of filter cylinder subassembly is fixedly connected with base through the inner installation groove, be equipped with the through -hole for installing motor subassembly in the open slot, and the output of motor subassembly passes through the through -hole and is connected with the second filter skeleton of filter cylinder subassembly, be equipped with liquid inlet and blowdown in the side of base, and liquid inlet and blowdown all are linked together with the open slot. The utility model discloses through base integration filter cylinder installation, motor fixed and fluid passage function, utilize the concentricity installation groove and promote positioning accuracy, and optimize modular installation through standardization interface design, has the advantages such as improving structure integration, enhancing positioning accuracy and optimizing modular design.

Description

Technical Field

[0001] This utility model relates to the field of automatic cleaning filter machines, and in particular to a base assembly in an automatic cleaning filter machine. Background Technology

[0002] Industrial automatic cleaning filters are devices installed in industrial fluid (such as water, sewage, cooling water, process fluids, etc.) pipeline systems that can automatically remove impurities trapped on the surface of filter screens / filter elements without interrupting the process flow. In the field of wastewater treatment, they are mainly used in the pretreatment stage (such as protecting downstream equipment) or the deep filtration stage (such as reclaimed water treatment). Through continuous online automatic cleaning, they ensure stable filtration flow, minimize system pressure loss, and reduce manual cleaning and maintenance downtime.

[0003] Existing automatic cleaning filters suffer from unreasonable base structure design and complex structure, resulting in deficiencies in precise positioning and high rigidity support, modularity and ease of installation.

[0004] Therefore, it is necessary to improve such a structure to overcome the above-mentioned defects. Utility Model Content

[0005] The purpose of this invention is to provide a base assembly for an automatic cleaning filter to solve the problems existing in the prior art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] An automatic cleaning filter machine includes a base assembly with an opening groove in the middle for mounting a filter cartridge assembly. The opening groove contains an outer mounting groove and an inner mounting groove arranged concentrically. The outer shell of the filter cartridge assembly is fixedly connected to the base via the outer mounting groove. A first filter frame of the filter cartridge assembly is fixedly connected to the base via the inner mounting groove. A through hole for mounting a motor assembly is provided in the opening groove. The output end of the motor assembly passes through the through hole and connects to a second filter frame of the filter cartridge assembly. An inlet and a drain are provided on the side of the base, both communicating with the opening groove.

[0008] Furthermore, the base has a liquid flow channel inside, one end of which is connected to the opening groove and the other end of which is connected to the liquid inlet. A connecting flange is provided at the liquid inlet, and a connecting thread is provided on the outer surface of the connecting flange. After the external pipeline is connected to the connecting flange, it is fixed by threaded fasteners.

[0009] Furthermore, a stepped limiting structure is provided at the bottom of the through hole, and a bolt connection hole is provided on the outside of the stepped limiting structure. After the motor assembly is positioned by the stepped limiting structure, it is fixedly connected to the base through the bolt connection hole.

[0010] Furthermore, the motor assembly includes a servo motor, which is fixedly connected to the base via a mounting plate. The output shaft of the servo motor passes through a through hole in the base and is connected to the rotating frame of the filter cartridge assembly. The second filter frame is mounted on the rotating frame and is concentrically arranged with the first filter frame.

[0011] Furthermore, the rotating frame is provided with a flow port, one end of which is connected to a liquid flow channel provided inside the base, and the other end of which is connected to the internal filtration area of ​​the filter cartridge assembly.

[0012] In summary, this utility model has the following beneficial effects:

[0013] In existing technologies, industrial automated cleaning filters are widely used in fluid pipeline systems to intercept impurities and maintain process stability. Traditional equipment base structures suffer from problems such as fragmented functionality, insufficient positioning accuracy, weak rigid support, and cumbersome installation procedures. For example, in the pretreatment stage of wastewater treatment plants, existing bases cannot simultaneously meet the requirements of precise filter cartridge positioning, stable motor installation, and integrated fluid channels, resulting in bulky equipment, low assembly efficiency, and susceptibility to vibration and displacement during operation.

[0014] To address the aforementioned issues, and considering the problems of dispersed base structures and inconsistent positioning benchmarks in existing systems, this paper proposes integrating filter cartridge installation, motor fixation, and fluid channels into a single base. Analysis of the motion relationship between the filter cartridge assembly and the drive mechanism reveals that the coaxiality of the outer shell and the filter frame directly affects filtration efficiency and cleaning stability. Further research on the fluid path shows that dispersed inlet and outlet ports increase pressure loss. Based on this, a monolithic base platform is proposed, achieving dual positioning through concentric mounting grooves, shortening the drive transmission path with embedded through-holes, and reducing fluid resistance through integrated flow channels.

[0015] By integrating filter cartridge installation, motor fixing, and fluid channel functions into the base, and utilizing concentric mounting grooves to improve positioning accuracy, and optimizing modular installation through standardized interface design, it has the advantages of improving structural integration, enhancing positioning accuracy, and optimizing modular design. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the base assembly described in this utility model.

[0017] Figure 2 This is a cross-sectional view of the base assembly described in this utility model.

[0018] Figure 3 This is a schematic diagram of the automatic cleaning filter machine described in this utility model. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with the illustrations and specific embodiments.

[0020] like Figures 1 to 3 As shown, the present invention proposes a base assembly for an automatic cleaning filter, including a base 1. An opening groove 3 for mounting a filter cartridge assembly 2 is provided in the middle of the base 1. An outer mounting groove 4 and an inner mounting groove 5 are provided in concentric arrangement within the opening groove 3. The outer shell 21 of the filter cartridge assembly 2 is fixedly connected to the base 1 through the outer mounting groove 4. The first filter frame 22 of the filter cartridge assembly 2 is fixedly connected to the base 1 through the inner mounting groove 5. A through hole 7 for mounting a motor assembly 6 is provided in the opening groove 3. The output end of the motor assembly 6 passes through the through hole 7 and is connected to the second filter frame 23 of the filter cartridge assembly 2. An inlet 8 and a drain 9 are provided on the side of the base 1, and both the inlet 8 and the drain 9 are connected to the opening groove 3.

[0021] The base 1 is the supporting structure that carries the filter cartridge assembly 2 and the motor assembly 6. It can be manufactured using casting or welding processes, and its internal cavity forms a fluid channel. The opening groove 3 is a recessed area in the middle of the base 1, which can be formed by machining. It is used to accommodate the filter cartridge assembly 2 and establish an installation reference. The outer mounting groove 4 is an annular groove on the edge of the opening groove 3, which can be formed by turning. It is used to fix the filter cartridge outer shell 21 and define its radial position. The inner mounting groove 5 is an annular groove in the center of the opening groove 3. It can be machined simultaneously with the outer mounting groove 4. It is used to fix the first filter frame 22 and ensure concentricity. The through hole 7 is a channel that penetrates the thickness of the base 1. It can be formed by drilling and is used to install the motor assembly 6 and transmit driving force. The liquid inlet 8 and the drain outlet 9 are the fluid inlet and outlet respectively located on the side wall of the base 1. They can be achieved by pipe welding or flange connection and are used to establish a filtration circulation path.

[0022] Specifically, the base 1 serves as an overall support platform, with the filter cartridge installation area centrally arranged via the opening slot 3. The concentric layout of the outer mounting slot 4 and the inner mounting slot 5 provides a dual positioning reference for the outer shell 21 and the first filter frame 22, ensuring that their axes coincide. After the motor assembly 6 is embedded in the through hole 7, its output end is directly connected to the second filter frame 23 to drive the rotational cleaning action. The concentric mounting slots eliminate the cumulative errors during the assembly of multiple components, the through hole 7 shortens the power transmission distance, and the integrated flow channel reduces pressure loss caused by pipe bends.

[0023] This solution integrates the mounting interface through the overall base 1, and the outer and inner mounting grooves 5 are machined simultaneously to ensure concentricity. The through hole 7 is directly embedded in the motor to shorten the transmission chain. In the prior art, the fluid channel needs to be connected to an external pipeline 10. This solution simplifies the pipeline layout by directly connecting the internal flow channel of the base 1 to the side interface.

[0024] Through the above technical solutions, this application achieves precise positioning of the filter cartridge assembly 2 and the motor assembly 6, enhances the rigidity of the base structure, shortens the fluid path, and reduces pressure loss. The concentric mounting groove eliminates assembly errors of multiple components, the integrated interface reduces on-site installation steps, and the integral base 1 improves the operational stability of the equipment.

[0025] Example 1

[0026] This application further proposes that the base 1 is provided with a liquid flow channel 11 inside, one end of the liquid flow channel 11 is connected to the opening groove 3, and the other end of the liquid flow channel 11 is connected to the liquid inlet 8. A connecting flange 12 is provided at the liquid inlet 8, and a connecting thread is provided on the outer surface of the connecting flange 12. After the external pipeline 10 is connected to the connecting flange 12, it is fixed by the threaded fastener 13 in conjunction with the connecting thread.

[0027] The liquid flow channel 11 refers to a continuous channel formed inside the base 1, which can be formed by casting or machining. It is used to directly connect the opening groove 3 and the liquid inlet 8 to achieve integrated fluid transmission. The connecting flange 12 refers to the annular flange structure set at the end of the liquid inlet 8. It can be fixed by welding or integral molding. It is used to provide a mating plane with the external pipeline 10 to ensure the flatness and sealing of the connection surface. The connecting thread refers to the thread structure distributed circumferentially along the outer surface of the flange. It can be a metric or imperial standard thread. It is used to cooperate with the threaded fastener 13 to achieve axial compression between the flange and the external pipeline 10. The threaded fastener 13 refers to a lock nut with internal threads. It can be a hexagonal nut or a flange nut. It is used to press the external pipeline 10 onto the end face of the connecting flange 12 by tightening, forming a sealed contact.

[0028] Specifically, the liquid flow channel 11 directly connects the opening groove 3 and the inlet 8 through the interior of the base 1, allowing fluid to be input without an external bypass. The connecting flange 12 is located at the end of the inlet 8, and its outer surface is machined with connecting threads. When the end of the external pipeline 10 is connected to the flange, the threaded fastener 13 is screwed in along the external threads of the flange, pressing the pipeline end face tightly against the flange's mating plane. During this process, the planar contact between the flange end face and the pipeline end face forms the first seal, and the axial clamping force of the threaded fastener 13 further enhances the sealing effect, eliminating the need for an additional gasket. Thus, the integrated design of the fluid channel and the standardized connection structure enable rapid pipeline installation and reliable sealing.

[0029] This solution integrates the liquid flow channel 11 inside the base 1, thus embedding the fluid transmission path and reducing external connection nodes. At the same time, it adopts a combination connection method of flange and threaded fastener 13, which enables rapid pipeline docking through standardized interfaces, eliminating the bolt hole alignment and gasket installation steps required for traditional flange connections.

[0030] Through the above technical solution, this application achieves integrated fluid channel design, simplifying the installation process of external pipeline 10. The mating structure of the flange and threaded fastener 13 ensures the sealing reliability of the connection surface, avoiding the leakage risk caused by uneven bolt preload in traditional flange connections, while reducing the number of parts and operating steps required for installation.

[0031] Example 2

[0032] This application further proposes that the bottom of the through hole 7 is provided with a stepped limiting structure 71, and a bolt connection hole 72 is provided on the outside of the stepped limiting structure 71. After the motor assembly 6 is positioned by the stepped limiting structure 71, it is fixedly connected to the base 1 through the bolt connection hole 72.

[0033] The stepped limiting structure 71 refers to the stepped annular boss formed at the bottom of the through hole 7. Specifically, it can be achieved using a multi-stage stepped structure formed by machining. Its inner diameter matches the outer diameter of the mounting part of the motor assembly 6, and it pre-positions the motor assembly 6 through its axial end face and radial sidewall. The bolt connection holes 72 refer to the threaded holes circumferentially distributed around the stepped limiting structure 71. Specifically, it can be achieved using four or six through holes 7 arranged at equal angular intervals, forming a uniform constraint force through symmetrically distributed fastening bolts.

[0034] Specifically, the axial end face of the stepped limiting structure 71 contacts the mounting plate 62 of the motor assembly 6, restricting its axial displacement and achieving radial alignment, so that the motor output shaft 63 remains coaxial with the through hole 7 of the base 1. Bolt connection holes 72 are arranged in the outer area of ​​the stepped limiting structure 71. After initial positioning, the mounting plate 62 of the motor assembly 6 is pressed onto the surface of the stepped limiting structure 71 by screwing in the fastening bolts. The radial sidewall of the stepped limiting structure 71 has a clearance fit with the outer edge of the mounting plate 62, guiding the mounting plate 62 to remain aligned during bolt tightening and avoiding eccentricity caused by uneven bolt preload.

[0035] Compared to existing technologies, traditional motor installation relies on manual adjustment of the centering position by operators, requiring repeated measurements of the coaxiality between the output shaft 63 and the through hole 7 of the base 1. This results in low positioning efficiency and a tendency for cumulative errors. This solution utilizes the mechanical limiting characteristics of the stepped limiting structure 71 to achieve initial centering of the motor assembly 6 even before the bolts are tightened. The contact surface between the mounting plate 62 and the stepped structure forms a self-correcting reference, significantly reducing adjustment time. The peripheral layout of the bolt connection holes 72 increases the radius of action of the tightening torque, which, compared to the traditional centrally symmetrical bolt arrangement, more effectively suppresses the circumferential torque generated during motor operation.

[0036] Through the above technical solutions, this application achieves rapid positioning and rigid fixation of the motor assembly 6. The stepped limiting structure 71 eliminates the need for manual alignment during installation, and the peripheral distribution of the bolt connection holes 72 enhances the torsional resistance. The transmission connection accuracy between the motor output shaft 63 and the filter frame is guaranteed, avoiding shaft vibration or seal failure caused by installation deviations. At the same time, the symmetrical distribution of bolt preload reduces local stress concentration and extends the service life of the connection structure.

[0037] Example 3

[0038] This application further proposes that the motor assembly 6 includes a servo motor 61, which is fixedly connected to the base 1 via a mounting plate 62. The output shaft 63 of the servo motor 61 passes through the through hole 7 of the base 1 and is connected to the rotating frame 24 of the filter cartridge assembly 2. The second filter frame 23 is mounted on the rotating frame 24 and is concentrically arranged with the first filter frame 22.

[0039] The servo motor 61 is a power device that controls the speed and direction of rotation via electrical signals. Specifically, it can be a permanent magnet synchronous motor with an encoder, used to drive the rotating frame 24 in periodic or continuous rotational motion. The mounting plate 62 is a transitional structure that supports the servo motor 61 and connects it to the base 1. Specifically, it can be a steel plate or aluminum alloy plate with locating pin holes, used to distribute vibration loads during motor operation and improve installation rigidity. The output shaft 63 is the rotating shaft that transmits power to the servo motor 61. Specifically, it can be a stepped shaft structure with a keyway or flange interface, used to directly drive the rotating frame 24 and ensure no intermediate errors in the power transmission path. The rotating frame 24 is the support frame for mounting the second filter frame 23. Specifically, it can be a ring-shaped welded or cast part with a flow port 241, used to convert the rotational motion of the servo motor 61 into the synchronous rotational motion of the second filter frame 23. The second filter frame 23 and the first filter frame 22 are concentrically arranged, meaning their central axes coincide. This can be achieved using the positioning reference of the inner and outer mounting grooves 4 of the base 1, used to ensure the uniformity of the filter gap during dynamic rotation.

[0040] Specifically, the servo motor 61 is aligned with the bolt connection holes 72 of the base 1 through the positioning holes on the mounting plate 62, and axially fixed using fastening bolts. Simultaneously, the flatness error of the mounting plate 62 is controlled within a preset range to ensure that the output shaft 63 of the servo motor 61 coincides with the axis of the through hole 7. After passing through the through hole 7, the output shaft 63 is connected to the rotating frame 24 via a coupling or spline structure, allowing the rotating frame 24 to rotate around a fixed axis under the drive of the servo motor 61. The second filter frame 23 is fixed to the radial support arm of the rotating frame 24 by clips or bolts, and its installation position is adjusted according to the inner diameter of the first filter frame 22. During operation, the servo motor 61 receives control signals to drive the rotating frame 24 to rotate at a set speed, causing the second filter frame 23 to rotate periodically relative to the first filter frame 22.

[0041] Through the above technical solutions, this application achieves precise axial and radial positioning of the motor assembly 6, avoiding the problem of drive shaft eccentricity caused by installation deviations, and ensuring that the second filter frame 23 and the first filter frame 22 can still maintain coaxial movement under high-speed rotation conditions. The direct drive between the servo motor 61 and the rotating frame 24 reduces power loss and improves energy conversion efficiency. At the same time, the distributed fixing structure of the mounting plate 62 enhances the motor's shock resistance under frequent start-stop or sudden load changes.

[0042] Example 4

[0043] This application further proposes that the rotating frame 24 is provided with a flow port 241, one end of which is connected to the liquid flow channel 11 provided inside the base 1, and the other end of which is connected to the internal filtration area of ​​the filter cartridge assembly 2.

[0044] The flow port 241 refers to the fluid channel penetrating the structure of the rotating frame 24. Specifically, it can be implemented using a circular through-hole 7 axially penetrating the rotating frame 24, establishing a direct communication path between the flow channel of the base 1 and the internal filtration area of ​​the filter cartridge. The liquid flow channel 11 refers to the fixed fluid transport path formed inside the base 1. Specifically, it can be implemented using a curved pipe structure formed by casting or machining, with a cross-sectional shape such as rectangular or semi-circular, used to guide external fluid to the flow port 241 of the rotating frame 24. The internal filtration area refers to the annular space formed by the first filter frame 22 and the second filter frame 23 in the filter cartridge assembly 2. Specifically, it can be implemented by coaxially installing multiple layers of frames to form a gap structure, used to accommodate the fluid to be filtered and achieve solid-liquid separation. When fluid enters the flow port 241 of the rotating frame 24 through the liquid flow channel 11 of the base 1, the fluid is directly introduced into the internal filtration area of ​​the filter cartridge. During the rotation of the rotating frame 24 driven by the servo motor 61, the flow port 241 rotates synchronously with the rotating frame 24, but its two ends remain connected to the liquid flow channel 11 of the fixed base 1 and the internal filtration area of ​​the rotating filter cartridge, respectively. This design allows the fluid to continuously enter the filtration area through the flow port 241 under dynamic rotation, achieving stable connection of the fluid path without relying on a complex rotary sealing structure.

[0045] Through the above technical solution, this application achieves uninterrupted fluid transmission between the rotating component and the fixed flow channel, solving the problem of decreased filtration efficiency caused by poor flow channel connection in traditional equipment. Fluid directly enters the filtration area through the flow port 241, avoiding kinetic energy loss caused by path detours and reducing system operating pressure. Simultaneously, the axial connection between the rotating frame 24 and the flow channel of the base 1 effectively prevents impurities from depositing at the flow channel connection points.

[0046] In this document, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer", "vertical", and "horizontal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the purpose of clarifying the technical solution and for the convenience of description, and therefore should not be construed as limiting the present utility model.

[0047] In this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A base assembly for an automatic cleaning filter, characterized in that, The system includes a base (1), with an opening groove (3) in the middle for mounting a filter cartridge assembly (2). An outer mounting groove (4) and an inner mounting groove (5) are arranged concentrically in the opening groove (3). The outer shell (21) of the filter cartridge assembly (2) is fixedly connected to the base (1) through the outer mounting groove (4). The first filter frame (22) of the filter cartridge assembly (2) is fixedly connected to the base (1) through the inner mounting groove (5). A through hole (7) for mounting a motor assembly (6) is provided in the opening groove (3). The output end of the motor assembly (6) passes through the through hole (7) and is connected to the second filter frame (23) of the filter cartridge assembly (2). An inlet (8) and a drain (9) are provided on the side of the base (1). Both the inlet (8) and the drain (9) are connected to the opening groove (3).

2. The base assembly in the automatic cleaning filter according to claim 1, characterized in that, The base (1) has a liquid flow channel (11) inside. One end of the liquid flow channel (11) is connected to the opening groove (3), and the other end of the liquid flow channel (11) is connected to the liquid inlet (8). A connecting flange (12) is provided at the liquid inlet (8). A connecting thread is provided on the outer surface of the connecting flange (12). After the external pipeline (10) is connected to the connecting flange (12), it is fixed by the threaded fastener (13) in conjunction with the connecting thread.

3. The base assembly in the automatic cleaning filter according to claim 1, characterized in that, The bottom of the through hole (7) is provided with a stepped limiting structure (71), and a bolt connection hole (72) is provided on the outside of the stepped limiting structure (71). After the motor assembly (6) is positioned by the stepped limiting structure (71), it is fixedly connected to the base (1) through the bolt connection hole (72).

4. The base assembly in the automatic cleaning filter according to claim 3, characterized in that, The motor assembly (6) includes a servo motor (61), which is fixedly connected to the base (1) via a mounting plate (62). The output shaft (63) of the servo motor (61) passes through the through hole (7) of the base (1) and is connected to the rotating frame (24) of the filter cartridge assembly (2). The second filter frame (23) is mounted on the rotating frame (24) and is concentrically arranged with the first filter frame (22).

5. The base assembly in the automatic cleaning filter according to claim 4, characterized in that, The rotating frame (24) is provided with a flow port (241). One end of the flow port (241) is connected to the liquid flow channel (11) provided inside the base (1), and the other end of the flow port (241) is connected to the internal filtration area of ​​the filter cartridge assembly (2).

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