Filter element fixing structure for sewage treatment device

Abstract

The utility model relates to the field of filter element fixing, and discloses a filter element fixing structure for a sewage treatment device, which comprises a base plate, a filter bag is contacted in a groove on the upper surface of the base plate, a motor is fixedly mounted at the right end of the lower surface of the base plate, a cleaning component is arranged on an output shaft of the motor, an auxiliary component is arranged in the filter bag, and the auxiliary component is fixedly mounted on the base plate. And the cleaning assembly comprises a threaded rod, the outer wall of the threaded rod is in threaded connection with a threaded sleeve, the outer wall of the threaded sleeve is fixedly connected with a movable frame, and the axis of the upper surface of the movable frame is detachably connected with a cross frame. According to the device, synchronous axial mechanical scraping of the device is achieved through mutual cooperation of connection relations of parts such as the movable frame, the cleaning sleeve and the cross in the device, the cleaning sleeve can be replaced independently through a mounting groove quick-release structure, a motor rotates forwards and backwards to strip a filter cake in a multi-stroke mode, and online continuous and efficient dirt removal and zero shutdown of maintenance are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of filter element fixing, and in particular to a filter element fixing structure for a sewage treatment device. Background Technology

[0002] In the field of wastewater treatment, filter cartridges are key filtration components, and the reliability of their installation and fixation directly affects the wastewater treatment effect and the operational stability of the device. Currently, bag filters are widely used in wastewater treatment due to their simple structure and low cost. These devices typically consist of a flexible filter bag fitted over a rigid, porous support cage. Wastewater permeates from the inner cavity of the bag to the outside, while solid particles are trapped on the bag wall.

[0003] The above-mentioned devices have the following defects: the filter bag fixing method is simple, and the bag mouth is generally pressed to the shell flange by an annular pressure plate or clamp, while the bottom of the bag is suspended. During operation, under the action of negative pressure suction and water flow impact, the filter bag is very prone to axial movement and radial collapse, resulting in a sharp reduction in effective filtration area, local damage, reduced filtration efficiency and shortened service life. Therefore, a filter element fixing structure for sewage treatment devices is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a filter element fixing structure for sewage treatment devices, which aims to improve the problem of poor filter bag fixing effect in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a filter element fixing structure for a sewage treatment device, comprising a chassis, a filter bag in contact with a groove on the upper surface of the chassis, a motor fixedly installed on the right end of the lower surface of the chassis, a cleaning component provided on the output shaft of the motor, an auxiliary component provided inside the filter bag, the cleaning component comprising a threaded rod, a threaded sleeve threadedly connected to the outer wall of the threaded rod, a movable frame fixedly connected to the outer wall of the threaded sleeve, a cross detachably connected to the axis of the upper surface of the movable frame, a cleaning sleeve fixedly installed at the end of the cross, and multiple sets of cleaning pads embedded in the inner wall of the cleaning sleeve.

[0006] As a further description of the above technical solution: the auxiliary component includes a top cover, a handle is fixedly installed on the upper surface of the top cover, a reinforcing rib is fixedly connected to the lower surface of the top cover, and a support plate is fixedly connected to the bottom end of the reinforcing rib.

[0007] As a further description of the above technical solution: the upper surface of the mobile frame is provided with multiple sets of mounting slots, and the outer wall of the cleaning sleeve is detachably connected to the inner wall of the mounting slot.

[0008] As a further description of the above technical solution: the internal structure of the support plate has multiple sets of reinforcing plates.

[0009] As a further description of the above technical solution: the outer wall of the support plate is in contact with the inner wall of the filter bag.

[0010] As a further description of the above technical solution: a limiting rod is fixedly connected to the left end of the upper surface of the chassis, and the limiting rod is connected through the upper surface of the mobile frame.

[0011] As a further description of the above technical solution: the bottom end of the threaded rod is fixedly installed on the output shaft of the motor.

[0012] As a further description of the above technical solution: the top cover is detachably connected to the top of the filter bag.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, the equipment achieves synchronous axial mechanical scraping by utilizing the inter-connection relationship between components such as the movable frame, cleaning sleeve, and cross. The quick-release structure of the mounting slot allows the cleaning sleeve to be replaced independently. The motor can peel off the filter cake in multiple strokes in both forward and reverse directions, ensuring continuous and efficient cleaning online with zero downtime for maintenance.

[0015] 2. In this utility model, the support plate, reinforcing plate, reinforcing rib and other components in the equipment form a three-dimensional limiting skeleton by utilizing the mutual cooperation of their connection relationships, ensuring a constant filtration area, and realizing the one-time replacement of the filter bag and skeleton, which greatly reduces maintenance time. Attached Figure Description

[0016] Figure 1 This is a front view of the main body of a filter element fixing structure for a wastewater treatment device proposed in this utility model;

[0017] Figure 2 This is a side view of the main body of a filter element fixing structure for a wastewater treatment device proposed in this utility model.

[0018] Figure 3 This is an exploded view of a portion of the cross-shaped part of a filter element fixing structure for a wastewater treatment device proposed in this utility model.

[0019] Figure 4 This is an exploded view of a portion of the support plate of a filter element fixing structure for a wastewater treatment device proposed in this utility model.

[0020] Legend:

[0021] 1. Chassis; 2. Movable frame; 21. Mounting slot; 3. Cleaning assembly; 31. Cross-shaped component; 32. Cleaning sleeve; 33. Cleaning pad; 34. Threaded rod; 35. Threaded sleeve; 36. Limiting rod; 4. Filter bag; 5. Auxiliary assembly; 51. Top cover; 52. Handle; 53. Reinforcing rib; 54. Support plate; 55. Reinforcing plate; 6. Motor. 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] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a filter element fixing structure for a sewage treatment device, including a chassis 1. The chassis 1 is the bottom support of the filter element fixing structure, used to support the filter bag 4 and form an upper surface groove for positioning the filter bag 4; at the same time, it provides an installation reference for the motor 6 and the limiting rod 36. The filter bag 4 is in contact with the upper surface groove of the chassis 1. The filter bag 4 is used to intercept solid impurities in sewage. The motor 6 is fixedly installed on the right end of the lower surface of the chassis 1. The motor 6 is used to provide rotational power to the cleaning component 3. The output shaft of the motor 6 is provided with the cleaning component 3. The cleaning component 3 is an integrated mechanism for automatically cleaning the outer wall of the filter bag 4 under the drive of the motor 6. It includes a threaded rod 34, a threaded sleeve 35, a moving frame 2, a cleaning sleeve 32 and a cleaning pad 33. An auxiliary component 5 is provided inside the filter bag 4. The auxiliary component 5 is a rigid support-extraction module that can be removed as a whole from the filter bag 4 to prevent the filter bag 4 from collapsing and facilitate quick replacement.

[0024] Reference Figure 2 - Figure 4The cleaning component 3 includes a threaded rod 34, the bottom end of which is fixedly mounted on the output shaft of the motor 6. The threaded rod 34 converts torque into linear lifting power of the threaded sleeve 35 through rotational motion. The threaded sleeve 35 is threadedly connected to the outer wall of the threaded rod 34. The threaded sleeve 35 and the threaded rod 34 are threaded together to form a motion conversion component, which is fixedly connected to the movable frame 2. This component converts the rotational motion into the vertical reciprocating motion of the movable frame 2. The movable frame 2 is fixedly connected to the outer wall of the threaded sleeve 35. The movable frame 2 is a lifting motion component driven by the threaded sleeve 35, which synchronously drives all the cleaning sleeves 32 to move up and down along the outer wall of the filter bag 4, achieving comprehensive mechanical cleaning in both circumferential and axial directions. The upper surface of the movable frame 2 has multiple sets of mounting slots 21 for detachably fixing the cleaning sleeves 32. The upper surface of the movable frame 2 also has multiple sets of mounting slots 21 for quick positioning and locking of the cleaning sleeves. The cleaning sleeve 32 enables modular assembly and disassembly. A limit rod 36 is fixedly connected to the left end of the upper surface of the chassis 1. The limit rod 36 passes through the moving frame 2 to limit its rotational freedom, ensuring that the moving frame 2 only moves vertically. The limit rod 36 is connected through the upper surface of the moving frame 2. The outer wall of the cleaning sleeve 32 is detachably connected to the inner wall of the mounting groove 21. A cross 31 is detachably connected to the axis of the upper surface of the moving frame 2. The cross 31 is used to fix multiple cleaning sleeves 32 at equal intervals along the circumference to ensure synchronous movement. The cleaning sleeve 32 is fixedly installed at the end of the cross 31. The outer wall of the cleaning sleeve 32 cooperates with the mounting groove 21, and the inner wall is embedded with cleaning pads 33, which directly cover the outer surface of the filter bag 4 to implement mechanical scraping. Multiple sets of cleaning pads 33 are embedded in the inner wall of the cleaning sleeve 32. The cleaning pads 33 are used to improve cleaning efficiency and prevent scratches on the surface of the filter bag 4.

[0025] Reference Figure 2 - Figure 4 The auxiliary component 5 includes a top cover 51, which is detachably connected to the top of the filter bag 4. The top cover 51 and the reinforcing rib 53 together form the upper closure of the support frame and also serve as the mounting base for the handle 52. The handle 52 is fixedly installed on the upper surface of the top cover 51. The handle 52 is used to lift the entire auxiliary component 5 and the filter bag 4 for quick assembly and disassembly. The reinforcing rib 53 is fixedly connected to the lower surface of the top cover 51. The reinforcing rib 53 is a rigid rod that vertically connects the top cover 51 and the support plate 54. It is used to transmit axial force and keep the filter bag 4 longitudinally tensioned. The bottom end of the reinforcing rib 53 is fixedly connected to the support plate 54. The support plate 54 is used to radially expand the filter bag 4 to prevent collapse and deformation. The outer wall of the support plate 54 is in contact with the inner wall of the filter bag 4. Multiple sets of reinforcing plates 55 are fixedly connected inside the support plate 54. The reinforcing plates 55 are used to improve the overall rigidity of the support plate 54 and evenly distribute the radial support force.

[0026] Working principle:

[0027] First, the chassis 1 is horizontally fixed to the filtration station of the wastewater treatment equipment. The groove on the upper surface of the chassis 1 is used to radially position the filter bag 4 to prevent circumferential slippage. The chassis 1 also provides a rigid mounting reference for the motor 6 and the limiting rod 36. The filter bag 4 is placed into the groove of the chassis 1 with the bag opening facing upwards. The filter bag 4 itself is a flexible porous medium used to intercept solid impurities in the wastewater. Then, the auxiliary component 5 is inserted into the filter bag 4 as a whole. The outer wall of the support plate 54 is attached to the inner wall of the filter bag 4, radially expanding the filter bag 4 to prevent collapse. The reinforcing plate 55 is in place. The support plate 54 has a grid-like reinforcing rib inside, which further improves the circumferential stiffness of the support plate 54 and makes the radial support force evenly distributed. The reinforcing rib 53 extends vertically upward from the upper surface of the support plate 54 and is fixed to the top cover 51 to form a rigid frame. The top cover 51 finally covers the top of the filter bag 4 to achieve axial compression. At the same time, it serves as the mounting base for the handle 52. The filter bag 4 is jointly constrained in three-dimensional space by the base plate 1, the support plate 54, the reinforcing rib 53, and the top cover 51 to ensure that it will not move axially or collapse radially during filtration.

[0028] Wastewater enters the inner cavity of filter bag 4 from above. The liquid flows outward through the wall of filter bag 4, while solid impurities are trapped on the inner wall surface of filter bag 4. As the operating time increases, the filter cake gradually thickens, and the filtration resistance increases. During the filtration stage, auxiliary component 5 is always located inside filter bag 4. The skeleton formed by top cover 51, reinforcing rib 53, support plate 54, and reinforcing plate 55 keeps filter bag 4 open, preventing bag wall adhesion caused by negative pressure suction, thereby ensuring a constant effective filtration area. When the pressure difference or time triggers the cleaning program, motor 6 starts, and the output shaft drives threaded rod 34 to rotate. Threaded rod 34 converts the rotational motion into linear lifting motion of threaded sleeve 35 through threaded joint. Since limit rod 36 passes through moving frame 2 and is fixed to chassis 1, moving frame 2 is limited... Guided by the positioning rod 36, it can only make vertical reciprocating movements to avoid rotation. Several mounting slots 21 on the upper surface of the moving frame 2 are inserted into cleaning sleeves 32. The cleaning sleeves 32 are circumferentially fixed to the center of the moving frame 2 by crosses 31 to achieve synchronous movement. When the moving frame 2 is raised and lowered, the cleaning pads 33 embedded in the inner wall of the cleaning sleeves 32 adhere to the outer wall of the filter bag 4 with constant pressure, and perform axial and circumferential double mechanical scraping to peel off the filter cake attached to the surface of the filter bag 4. The peeled impurities fall downward and can be discharged from the bottom drain port. The cleaning pads 33 are made of flexible and wear-resistant material, which not only improves the decontamination efficiency but also prevents scratches on the surface of the filter bag 4. The motor 6 can rotate in both directions, so that the moving frame 2 can move up and down repeatedly to ensure thorough cleaning.

[0029] When the filter bag 4 reaches the end of its service life or is damaged and needs to be replaced, shut down the system and drain the residual liquid. Hold the handle 52 and lift the top cover 51, along with the reinforcing rib 53, support plate 54, reinforcing plate 55, and filter bag 4 upwards. Since the auxiliary component 5 and the filter bag 4 are an integral structure, the replacement process does not require separate disassembly and assembly of the support components, which significantly shortens the downtime. The new filter bag 4, along with the new or cleaned auxiliary component 5, can be installed in reverse according to the above steps to resume operation. The cleaning sleeve 32 and the cleaning pad 33 form a detachable plug-in structure through the mounting groove 21 and the cross 31, which is convenient for separate removal, cleaning or replacement. The motor 6, threaded rod 34, threaded sleeve 35, moving frame 2, and limit rod 36 constitute an independent lifting drive module, which can also be removed as a whole for maintenance without affecting the replacement of the filter bag 4 and auxiliary component 5.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A filter cartridge fixing structure for a wastewater treatment device, comprising a chassis (1), characterized in that: A filter bag (4) is in contact with a groove on the upper surface of the chassis (1). A motor (6) is fixedly installed on the right end of the lower surface of the chassis (1). A cleaning component (3) is provided on the output shaft of the motor (6). An auxiliary component (5) is provided inside the filter bag (4). The cleaning assembly (3) includes a threaded rod (34), the outer wall of which is threadedly connected to a threaded sleeve (35), the outer wall of which is fixedly connected to a movable frame (2), a cross (31) is detachably connected to the upper surface of the movable frame (2) at the axis, a cleaning sleeve (32) is fixedly installed at the end of the cross (31), and multiple sets of cleaning pads (33) are embedded in the inner wall of the cleaning sleeve (32).

2. The filter element fixing structure for a wastewater treatment device according to claim 1, characterized in that: The auxiliary component (5) includes a top cover (51), a handle (52) is fixedly installed on the upper surface of the top cover (51), a reinforcing rib (53) is fixedly connected to the lower surface of the top cover (51), and a support plate (54) is fixedly connected to the bottom end of the reinforcing rib (53).

3. The filter element fixing structure for a wastewater treatment device according to claim 1, characterized in that: The upper surface of the mobile frame (2) has multiple sets of mounting slots (21), and the outer wall of the cleaning sleeve (32) is detachably connected to the inner wall of the mounting slot (21).

4. The filter element fixing structure for a wastewater treatment device according to claim 2, characterized in that: The internal structure of the support plate (54) has multiple sets of reinforcing plates (55) fixedly connected.

5. The filter element fixing structure for a wastewater treatment device according to claim 2, characterized in that: The outer wall of the support plate (54) is in contact with the inner wall of the filter bag (4).

6. The filter element fixing structure for a wastewater treatment device according to claim 1, characterized in that: A limiting rod (36) is fixedly connected to the left end of the upper surface of the chassis (1), and the limiting rod (36) is connected through the upper surface of the movable frame (2).

7. The filter element fixing structure for a wastewater treatment device according to claim 1, characterized in that: The bottom end of the threaded rod (34) is fixedly mounted on the output shaft of the motor (6).

8. The filter element fixing structure for a wastewater treatment device according to claim 2, characterized in that: The top cover (51) is detachably attached to the top of the filter bag (4).

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