Filter element maintenance equipment and use method

Abstract

The invention relates to filter element maintenance equipment and a using method, and the maintenance equipment comprises a box body with an opening in the bottom; the flexible lifting unit comprises a first driving part and a flexible lifting part; the rigid lifting unit is connected with the flexible lifting piece and extends into the box body; the rigid lifting unit comprises a shell, a second driving piece, a rigid lifting piece and a grabber; a first plane is arranged on the outer surface of the shell; the rigid lifting piece is movably arranged in the channel in the axis direction of the channel. The second driving piece is connected with the rigid lifting piece; the grabber is connected to the rigid lifting piece; the platform is mounted in the box body and is positioned below the flexible lifting unit; the platform is provided with a through hole into which the shell extends; and a parking surface for supporting the first plane is formed above the platform. According to the invention, rigid lifting and flexible lifting are coupled, on the premise that enough lifting stroke is ensured, the occupied space is reduced, and the alignment precision is improved.

Description

Technical Field

[0001] This application relates to the technical field of handling and lifting equipment, and particularly to a filter element maintenance device and a usage method thereof. Background Art

[0002] In automated scenarios such as the nuclear industry and the chemical industry, there are radioactive or toxic and harmful substances, and filtering equipment is usually installed for filtration. The filter elements of the filtering equipment need to be replaced and maintained regularly, so it is necessary to disassemble and assemble the filter elements. Due to the particularity of the operating environment to avoid harm to the human body, the disassembly and assembly of filter elements generally do not adopt manual methods, but use industrial robots or special automated equipment to complete the disassembly and assembly operations.

[0003] Currently, for the disassembly and assembly of filter elements in these special fields, it mainly relies on a lifting mechanism for disassembly and assembly. The applicant found during the R & D process that the lifting mechanisms are mainly divided into two categories: One is a flexible lifting mechanism, which uses, for example, steel wires and iron chains as lifting members, and controls lifting and lowering by winding or releasing the steel wires. The flexible lifting mechanism has the advantage of simple structure and can achieve large vertical lifting with a small installation space. However, its disadvantages are also obvious. Steel wires are prone to shaking, and the positioning seriously depends on external sensors to judge the release height, etc. Dust, steam, etc. in the operating environment will affect the accuracy of the sensors, resulting in poor positioning accuracy and prone to inaccurate alignment. Since the moving direction of the flexible lifting mechanism is the vertical direction, when the reference plane is not horizontal, there will be a verticality error, which will also easily lead to inaccurate alignment.

[0004] The other is a rigid lifting mechanism, which usually uses a lead screw nut pair, a rack and pinion mechanism, etc. to drive the lifting. The lifting direction of the rigid lifting mechanism is fixed, with high precision and good rigidity, and can provide stable support. However, it also has the defects of complex and heavy structure and large space occupation. Compared with the flexible lifting mechanism, for the same lifting stroke, the space occupied by the rigid lifting mechanism is extremely large, which is not conducive to operating in a space-limited environment, and the cost is also more expensive.

[0005] The filter element structure itself includes an installation part and a filtering part, and its length is relatively long, so a long lifting stroke is required. When disassembling and assembling filter elements in special environments such as the nuclear industry and the chemical industry, using a pure rigid lifting mechanism requires a large amount of space, and the space in special environments is limited, and the cost is also extremely expensive; while using a pure flexible lifting mechanism, when the reference plane is not horizontal, since the flexible lifting mechanism is vertically lifted and its moving direction is the vertical direction and not perpendicular to the reference plane, there will be a verticality error, resulting in inability to accurately align with the filter element.

[0006] Therefore, it is necessary to provide a filter element maintenance device that occupies a small space, has a relatively low cost, and has a high positioning accuracy to disassemble and assemble the filter element. Summary of the invention

[0007] Based on this, it is necessary to provide a filter element maintenance device and a method of use, and its specific technical solution is as follows.

[0008] A filter element maintenance device, characterized in that it comprises: A box body, with an opening at the bottom; The flexible lifting unit comprises a first driving member and a flexible lifting member; the first driving member is connected to the flexible lifting member and is used to release or reel in the flexible lifting member; A rigid lifting unit is connected to the flexible lifting member and extends into the box; the rigid lifting unit comprises a shell, a second driving member, a rigid lifting member and a grabber; a first plane is provided on the outer surface of the shell; a channel extending along the axial direction thereof is provided in the shell; the rigid lifting member is movably placed in the channel along the axial direction of the channel; the second driving member is connected to the rigid lifting member and is used to drive the rigid lifting member to move; the grabber is connected to the rigid lifting member; The platform is installed inside the box and below the flexible lifting unit; the platform is provided with a through hole for the housing to extend into; and a parking surface for supporting the first plane is formed above the platform.

[0009] Furthermore, a centering guide structure is provided between the shell and the platform, so that the shell is coaxially arranged with the through hole after extending into the through hole.

[0010] Furthermore, the centering guide structure includes a first guide surface located on the platform, and a second guide surface located on the outer surface of the shell; the first guide surface is V-shaped or conical, and the shape of the second guide surface is adapted to the shape of the first guide surface.

[0011] Furthermore, the flexible lifting unit also includes a shell, a drum and a first pulley; the first driving member is installed on the shell and is transmission-connected to the drum; the first pulley is installed on the shell; the flexible lifting member is wound around the drum and extends into the box after passing through the first pulley.

[0012] Furthermore, a force sensor is provided on the flexible lifting member, and the force sensor is used to monitor the tension of the flexible lifting member.

[0013] Furthermore, the flexible lifting member is a steel wire rope, or a chain, or other flexible locking cables.

[0014] Furthermore, the platform includes a platform body and a clamping mechanism; the clamping mechanism is installed on the platform body and is used to clamp the housing or the filter element.

[0015] Further, the clamping mechanism includes two oppositely arranged clamping members and a third driving member; the third driving member is respectively connected to the two clamping members and is used to drive the two clamping members to open and close.

[0016] A method for using the above-mentioned filter element maintenance equipment to disassemble a filter element includes the following steps: Place the side of the box body with the opening facing the filter element on the installation surface of the filter element to form an enclosed space. The first driving member releases the flexible lifting member, so that the rigid lifting unit moves downward under the action of gravity. As the rigid lifting unit moves downward, the housing enters the through hole of the platform until the first plane on the outer surface of the housing abuts against the stopping surface on the platform. The second driving member drives the rigid lifting member downward until the gripper grabs the filter element. The second driving member drives the rigid lifting member to move upward and reset to remove the filter element. The first driving member winds up the flexible lifting member to lift the filter element completely away from the installation surface.

[0017] A method for using the above-mentioned filter element maintenance equipment to disassemble a filter element includes the following steps: Place the side of the box body with the opening facing the filter element on the installation surface of the filter element to form an enclosed space. The first driving member releases the flexible lifting member, so that the rigid lifting unit moves downward under the action of gravity. As the rigid lifting unit moves downward, the housing enters the through hole of the platform until the first plane on the outer surface of the housing abuts against the stopping surface on the platform. The clamping mechanism clamps the housing. The second driving member drives the rigid lifting member downward until the gripper grabs the filter element. The second driving member drives the rigid lifting member to move upward and reset to remove the filter element. The first driving member winds up the flexible lifting member to lift the filter element completely away from the installation surface and reach a preset height. The clamping mechanism clamps the filter element and the gripper releases the filter element.

[0018] Beneficial effects: 1. Adopting the coupling method of rigid lifting and flexible lifting, the flexible lifting unit controls the lifting and lowering of the rigid lifting unit. On the premise of ensuring sufficient lifting stroke, the space occupation is reduced, and it can be well applied to special environments with limited space. By positioning the rigid lifting unit through the platform and using the rigid lifting unit to drive the gripper to align with the filter element, the alignment accuracy is guaranteed, and it is not affected by whether the installation surface of the filter element is horizontal, improving the positioning accuracy, stability and success rate.

[0019] 2. By arranging a centering and guiding structure between the housing and the platform, the deviation of the flexible lifting member in the horizontal direction during the lifting and lowering process can be compensated, ensuring the alignment accuracy between the rigid lifting unit and the filter element, thereby further improving the success rate.

[0020] 3. When disassembling the filter element, the rigid lifting unit can first lift the filter element until the installation part is separated from the installation surface. Due to the good rigidity of the rigid lifting unit, the phenomenon of jamming of the inclined filter element during disassembly can be avoided.

[0021] 4. After clamping the housing by the clamping mechanism, driving the rigid lifting member to move to disassemble and assemble the filter element can keep the rigid lifting unit stable, thus ensuring the stability of the disassembly and assembly operation and further improving the success rate; moreover, the disassembled filter element can be clamped by the clamping mechanism, facilitating other subsequent operations such as transfer. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 Is a schematic cross-sectional view of the maintenance equipment; Figure 2 Is a schematic diagram of the flexible lifting unit; Figure 3 Is a schematic cross-sectional view of the rigid lifting unit; Figure 4 Is a schematic diagram of the platform; Figure 5 Is a schematic diagram of the cooperation between the platform and the rigid lifting unit; Figure 6 Is a schematic diagram of the clamping mechanism clamping the filter element; Figure 7 Is one of the schematic flowcharts of the usage method; Figure 8 Is the second schematic flowchart of the usage method.

[0024] Description of the reference numerals: 100, flexible lifting unit; 200, rigid lifting unit; 300, platform; 400, filter element; 500, box body; 101, flexible lifting member; 102, reel; 103, first driving member; 104, first pulley; 105, force sensor; 201, housing; 202, rigid lifting member; 203, second driving member; 204, second pulley; 205, first plane; 206, annular protrusion; 2021, Channel; 2022, Gripper; 301, Platform body; 302, Clamping member; 303, Third driving member; 304, Through hole; 305, Clamping state sensor; 306, Positioning sensor; 307, First part; 308, Second part. Detailed implementation manners

[0025] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.

[0027] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0028] In the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0029] In this application, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0030] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0031] Embodiment 1 This embodiment provides a filter element maintenance device. Referring to Figure 1 as shown, it includes a box body 500, a flexible lifting unit 100, a rigid lifting unit 200 and a platform 300. It should be noted that the application scenarios of this embodiment are at filtration equipment in the nuclear industry, chemical industry and other fields. These special application scenarios have problems such as limited space and the presence of toxic and harmful substances.

[0032] Specifically, an opening is provided at the bottom of the box body 500. When one side of the opening of the box body 500 is attached to the installation surface of the filter element 400, a sealed space is formed around between the box body 500 and the installation surface, which can prevent the leakage of toxic and harmful substances during the disassembly and assembly of the filter element 400.

[0033] Specifically, the flexible lifting unit 100 includes a first driving member 103 and a flexible lifting member 101; the first driving member 103 is connected to the flexible lifting member 101 and is used to release or wind up the flexible lifting member 101. The flexible lifting member 101 has a certain flexibility. During the release process, the flexible lifting member 101 will move downward in the vertical direction.

[0034] Specifically, the rigid lifting unit 200 is connected to the flexible lifting member 101 and extends into the box body 500. When the flexible lifting member 101 is wound or released, the rigid lifting unit 200 will rise or fall accordingly. At this time, the moving direction of the rigid lifting unit 200 is the vertical direction. The rigid lifting unit 200 includes a housing 201, a second driving member 203, a rigid lifting member 202, and a gripper 2022. The outer surface of the housing 201 is provided with a first plane 205, and an annular protrusion 206 is provided on the outer surface of the housing 201. The first plane 205 is located on the annular protrusion 206 and serves as a limiting surface. A channel 2021 extending along the axis direction of the housing 201 is provided inside the housing 201. The rigid lifting member 202 is movably disposed in the channel 2021 along the axis direction of the channel 2021. The channel 2021 restricts the moving direction of the rigid lifting member 202, so that the rigid lifting member 202 moves along the axis direction of the channel 2021. The second driving member 203 is connected to the rigid lifting member 202 and is used to drive the rigid lifting member 202 to move. Therefore, when the second driving member 203 drives the rigid lifting member 202, the rigid lifting member 202 moves along the axis direction of the channel 2021 under the restriction of the channel 2021. The gripper 2022 is connected to the rigid lifting member 202, specifically connected to the end of the rigid lifting member 202. When the rigid lifting member 202 moves, it drives the gripper 2022 to move, thereby driving the gripper 2022 to approach or lift the filter element 400.

[0035] Specifically, the platform 300 is installed inside the box body 500 and is located below the flexible lifting unit 100. A through hole 304 for accommodating the housing 201 to extend into is provided inside the platform 300. A stopping surface for supporting the first plane 205 is formed above the platform 300. When the housing 201 extends into the through hole 304, the first plane 205 is supported by the stopping surface to position the rigid lifting unit 200. In this embodiment, the platform 300 is installed on the box body 500 and the relative position with the box body 500 remains fixed. After the housing 201 of the rigid lifting unit 200 extends into the through hole 304, it is supported by the platform 300, so that the relative position between the rigid lifting unit 200 and the platform 300 remains fixed. Therefore, when disassembling and assembling the filter element 400, after aligning the positions of the box body 500 and the filter element 400, the alignment accuracy between the rigid lifting unit 200 and the filter element 400 during the grasping process can be ensured, thereby ensuring the success rate during the grasping process of the gripper 2022.

[0036] A filter element maintenance device provided in this embodiment adopts a coupling method of rigid lifting and flexible lifting. The flexible lifting unit 100 controls the lifting and lowering of the rigid lifting unit 200. On the premise of ensuring sufficient lifting stroke, the space occupation is reduced, and it can be extremely suitable for special environments with limited space. By positioning the rigid lifting unit 200 through the platform 300 and using the rigid lifting unit 200 to drive the gripper 2022 to align with the filter element 400, the alignment accuracy is ensured, regardless of whether the installation surface of the filter element 400 is in a horizontal state, improving the positioning accuracy, stability and success rate.

[0037] Specifically, in this embodiment, the gripper 2022 can be designed according to the structural characteristics of the filter element 400 and is used to grasp and release the filter element 400. A mechanical claw, an electromagnetic chuck, or a specific snap structure can be selected.

[0038] Specifically, the flexible lifting member 101 can be connected to the rigid lifting unit 200 through the second pulley 204. The second pulley 204 is installed on the top of the housing 201, and the flexible lifting member 101 bypasses the second pulley 204. When the flexible lifting member 101 is wound or released, the rigid lifting unit 200 can be driven to lift and lower.

[0039] Specifically, in this embodiment, the first driving member 103 can adopt equipment such as a winch or a hoist, and the flexible lifting member 101 can select a steel wire rope, a steel chain or other flexible ropes. The rigid lifting member 202 can select structures such as a cylinder, a motor lead screw pair, a cylinder, etc., and the second driving member 203 can select a corresponding driving source. When disassembling the filter element 400, the rigid lifting unit 200 can first lift the filter element 400 until the installation part is separated from the installation surface. The rigidity of the rigid lifting unit 200 is good, which can avoid the jamming phenomenon of the filter element 400 arranged obliquely during disassembly.

[0040] Specifically, a centering and guiding structure is provided between the housing 201 and the platform 300 to make the housing 201 coaxially arranged with the through hole 304 after extending into the through hole 304. Specifically, the centering and guiding structure includes a first guiding surface on the platform 300 and a second guiding surface on the outer surface of the housing 201. The shape of the guiding surface can be various. For example, the first guiding surface is set as a V shape or a conical shape, and the shape of the second guiding surface is set to match the shape of the first guiding surface. In this embodiment, through the cooperation of the first guiding surface and the second guiding surface, the housing 201 is coaxially arranged with the through hole 304, which can compensate for the deviation in the horizontal direction during the lifting process of the flexible lifting member 101, ensuring the alignment accuracy of the rigid lifting unit 200 and the filter element 400, and further improving the success rate.

[0041] Specifically, referring to Figure 2As shown, the flexible lifting unit 100 further includes a housing, a winding drum 102, and a first pulley 104. The first driving member 103 is installed on the housing and is in transmission connection with the winding drum 102 to drive the winding drum 102 to rotate by the first driving member 103. The first pulley 104 is installed on the housing; the flexible lifting member 101 is wound around the winding drum 102 and extends into the box body 500 after passing through the first pulley 104. In this embodiment, the housing is installed on the box body 500, and a circular hole is provided at the top of the box body 500, so that the flexible lifting member 101 extends into the box body 500 from the circular hole. The circular hole is closed by the housing, so that a sealed space can be formed when the box body 500 fits with the installation surface.

[0042] Specifically, a force sensor 105 is provided on the flexible lifting member 101, and the force sensor 105 is used to monitor the tension of the flexible lifting member 101. By monitoring the tension of the flexible lifting member 101 through the force sensor 105, the state of the rigid lifting unit 200 can be obtained. For example, when the rigid lifting unit 200 is continuously descending, the tension of the flexible lifting member 101 is maintained within a certain range under the action of the rigid lifting unit 200; when the first surface of the housing 201 abuts against the stopping surface of the platform 300, the tension of the flexible lifting member 101 rapidly decreases; when the flexible lifting member 101 is wound up to raise the rigid lifting member 202, if the filter element 400 is successfully grasped, the tension will be greater than the tension when the filter element 400 is not successfully grasped, so as to know whether the filter element 400 is successfully grasped.

[0043] Embodiment 2 This embodiment is further improved on the basis of Embodiment 1. The difference between this embodiment and Embodiment 1 is that the platform 300 includes a platform body 301 and a clamping mechanism; the clamping mechanism is installed on the platform body 301 and is used to clamp the housing 201 or the filter element 400. When the housing 201 passes through the through hole 304, the housing 201 is clamped by the clamping mechanism, which can ensure the stability of the rigid lifting unit 200. The platform 300 provides rigid support and precise positioning for the rigid lifting mechanism, so as to ensure the stability of the disassembly and assembly operation and further improve the success rate; and the removed filter element 400 can be clamped by the clamping mechanism, which is convenient for subsequent transfer and other operations.

[0044] Specifically, referring to Figure 4As shown, the clamping mechanism includes two oppositely arranged clamping members 302 and a third driving member 303. The two clamping members 302 are respectively located on both sides of the through hole 304, and the third driving member 303 is respectively connected to the two clamping members 302. By driving the two clamping members 302 to open and close, clamping and releasing of the housing 201 or the filter element 400 are achieved. In this embodiment, the third driving member 303 can adopt a motor and a lead screw structure. A clamping state sensor 305 is provided on the clamping member 302 for monitoring whether complete clamping or complete loosening is achieved. The clamping state sensor 305 can adopt a limit switch, a distance measuring sensor, etc., or directly monitor the clamping or releasing state by reading the encoder of the motor.

[0045] Specifically, the clamping member 302 can be set to a shape matching the outer contour of the housing 201, so as to stably clamp the housing 201. Generally, the housing 201 is usually set to a cylindrical shape, and the clamping member 302 is set to a shape matching the cylindrical shape, so as to clamp the housing 201, and can also clamp the filter element 400.

[0046] In this embodiment, the clamping member 302 includes a first part 307 and a second part 308, and the first part 307 is perpendicular to the second part 308; the first part 307 includes a first clamping surface matching the outer contour of the annular protrusion 206 on the housing 201, and the stopping surface is arranged at the top of the second part 308; when clamping the rigid lifting unit 200, the first plane 205 of the annular protrusion 206 abuts against the stopping surface, and the outer contour surface of the annular protrusion 206 is clamped by the first clamping surface. The second part 308 further includes a second clamping surface matching the filter element 400, and the second clamping surface can clamp the filter element 400.

[0047] Specifically, referring to Figures 3 - 5 As shown, the first guiding surface can be arranged on the inner side wall of the first part 307 of the clamping member 302, and the second guiding surface can be arranged on the outer side wall of the annular protrusion 206 of the housing 201. The two clamping members 302 are symmetrically arranged along the axis of the through hole 304 and always remain coaxially arranged with the through hole 304, so as to ensure the accuracy of the rigid lifting member 202.

[0048] Specifically, a positioning sensor 306 is further arranged on the stopping surface. The positioning sensor 306 is used to measure the distance between the first plane 205 and the stopping surface. When the first plane 205 is close to the stopping surface within a certain distance, the release speed of the flexible lifting member 101 can be reduced to ensure that the housing 201 and the through hole 304 are smoothly aligned and matched as much as possible. The positioning sensor 306 can adopt a laser sensor.

[0049] Embodiment 3 This embodiment provides a method for disassembling a filter element using the maintenance equipment described in Embodiment 1. Referring to Figure 7 as shown, it includes the following steps: S1. Orient the side of the box body 500 with an opening towards the filter element 400, place it on the installation surface of the filter element 400, and enclose a sealed space; S2. The first driving member 103 releases the flexible lifting member 101, causing the rigid lifting unit 200 to move downward under the action of gravity; S3. As the rigid lifting unit 200 moves downward, the housing 201 enters the through hole 304 of the platform 300 until the first plane 205 on the outer surface of the housing 201 abuts against the stopping surface on the platform 300; S4. The second driving member 203 drives the rigid lifting member 202 to move downward until the gripper 2022 grabs the filter element 400; S5. The second driving member 203 drives the rigid lifting member 202 to move upward and reset, removing the filter element 400; S6. The first driving member 103 winds up the flexible lifting member 101, causing the filter element 400 to be lifted completely away from the installation surface.

[0050] The method provided in this embodiment adopts a coupling method of rigid lifting and flexible lifting. The flexible lifting unit 100 controls the lifting and lowering of the rigid lifting unit 200. On the premise of ensuring sufficient lifting stroke, the space occupation is reduced, and it can be very well applied to special environments with limited space. By positioning the rigid lifting unit 200 through the platform 300 and using the rigid lifting unit 200 to drive the gripper 2022 to align with the filter element 400, the alignment accuracy is ensured, and it is not affected by whether the installation surface of the filter element 400 is horizontal, improving the positioning accuracy, stability and success rate.

[0051] Specifically, in step S1, by enclosing a sealed space with the box body 500 and the installation surface, it can effectively prevent the leakage of toxic and harmful substances during the disassembly and assembly of the filter element 400. When placing the box body 500, the placement position of the box body 500 can be determined according to the distance between the through hole 304 on the platform 300 and the edge of the box body 500, as well as the distance between the filter element 400 and the edge of the box body 500, so that the through hole 304 is aligned with the filter element 400, thereby ensuring that the gripper 2022 on the rigid lifting member 202 is aligned with the filter element 400.

[0052] Specifically, in step S2, when releasing the flexible lifting member 101, first release it at a uniform speed, and detect the distance between the first plane 205 and the stopping surface through the positioning sensor 306. When the distance reaches the preset range, it means that the rigid lifting unit 200 has approached the platform 300. At this time, slowly release the flexible lifting member 101, which can ensure the docking of the housing 201 and the through hole 304 as much as possible.

[0053] Specifically, in step S3, during the process of the housing 201 entering the through hole 304, the centering and guiding structure can guide the housing 201 to be centered with the through hole 304, thereby compensating for the horizontal offset generated during the release process of the flexible lifting member 101, ensuring the alignment accuracy between the gripper 2022 and the filter element 400, and improving the success rate of grasping. Moreover, when the first plane 205 abuts against the stopping surface, the force sensor 105 will detect that the tension significantly decreases, so that it can be determined that the housing and the platform 300 are already in place.

[0054] Specifically, in step S6, when the first driving member 103 winds up the flexible lifting member 101 to lift the rigid lifting unit 200 and the filter element 400, it is determined whether the filter element 400 is grasped according to the magnitude of the tension, and it is determined whether the filter element 400 falls off or encounters an obstacle during the lifting process according to the change in the tension.

[0055] Embodiment 4 This embodiment provides a method for using the maintenance equipment described in Embodiment 2 to disassemble the filter element. Referring to Figure 8 as shown, the following steps are included: T1. Place the side of the box body 500 with the opening facing the filter element 400 on the installation surface of the filter element 400 to form an enclosed space; T2. The first driving member 103 releases the flexible lifting member 101, causing the rigid lifting unit 200 to move downward under the action of gravity; T3. As the rigid lifting unit 200 moves downward, the housing 201 enters the through hole 304 of the platform 300 until the first plane 205 on the outer surface of the housing 201 abuts against the stopping surface on the platform 300; T4. The clamping mechanism clamps the housing 201; T5. The second driving member 203 drives the rigid lifting member 202 to move downward until the gripper 2022 grasps the filter element 400; T6. The second driving member 203 drives the rigid lifting member 202 to move upward and reset to remove the filter element 400; T7. The first driving member 103 winds up the flexible lifting member 101 to lift the filter element 400 completely away from the installation surface and reach a preset height; T8. The clamping mechanism clamps the filter element 400, and the gripper 2022 releases the filter element 400.

[0056] The usage method provided in this embodiment adopts a coupling method of rigid lifting and flexible lifting. The flexible lifting unit 100 controls the lifting and lowering of the rigid lifting unit 200. On the premise of ensuring sufficient lifting stroke, the space occupation is reduced, and it can be very well applied to special environments with limited space. By positioning the rigid lifting unit 200 through the platform 300 and using the rigid lifting unit 200 to drive the gripper 2022 to align with the filter element 400, the alignment accuracy is ensured, regardless of whether the installation surface of the filter element 400 is horizontal, improving the positioning accuracy, stability and success rate. After clamping the housing 201 by the clamping mechanism, the rigid lifting member 202 is driven to move to disassemble and assemble the filter element 400, which can keep the rigid lifting unit 200 stable, thus ensuring the stability of the disassembly and assembly operation and further improving the success rate; and the disassembled filter element 400 can be clamped by the clamping mechanism, facilitating other operations such as subsequent transfer.

[0057] Specifically, in step T1, a closed space is formed by the box body 500 and the installation surface, which can effectively prevent the leakage of toxic and harmful substances during the disassembly and assembly of the filter element 400. When placing the box body 500, the placement position of the box body 500 can be determined according to the distance between the through hole 304 on the platform 300 and the edge of the box body 500, as well as the distance between the filter element 400 and the edge of the box body 500, so that the through hole 304 is aligned with the filter element 400, thereby ensuring that the gripper 2022 on the rigid lifting member 202 is aligned with the filter element 400.

[0058] Specifically, in step T2, when releasing the flexible lifting member 101, it is first released at a uniform speed. The distance between the first plane 205 and the stopping surface is detected by the positioning sensor 306. When the distance reaches the preset range, it indicates that the rigid lifting unit 200 has approached the platform 300. At this time, the flexible lifting member 101 is slowly released, which can ensure the docking of the housing 201 and the through hole 304 as much as possible.

[0059] Specifically, in step T3, during the process of the housing 201 entering the through hole 304, the centering and guiding structure can guide the housing 201 to be centered with the through hole 304, thereby compensating for the horizontal offset generated during the release process of the flexible lifting member 101, ensuring the alignment accuracy of the gripper 2022 and the filter element 400, and improving the success rate of grasping. Moreover, when the first plane 205 abuts against the stopping surface, the force sensor 105 will monitor that the tension significantly decreases, so that it can be judged that the housing 201 and the platform 300 have been fitted in place.

[0060] Specifically, in step T4, the clamping or releasing state of the clamping mechanism can be detected by the clamping state sensor 305. After the clamping mechanism clamps the housing 201, it provides support and precise positioning for the rigid lifting unit 200, further improving the accuracy of the alignment between the gripper 2022 and the filter element 400 and increasing the success rate of grasping.

[0061] Specifically, in step T8, the filter element 400 is converted from the state of being clamped by the gripper 2022 to the state of being clamped by the clamping mechanism; the filter element 400 is firmly fixed on the platform 300, thus facilitating subsequent transfer, inspection, sealing or other operations.

[0062] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0063] The above-described embodiments merely represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A filter element maintenance device, characterized in that, Comprising: A box body with an opening at the bottom; A flexible lifting unit, including a first driving member and a flexible lifting member; The first driving member is connected to the flexible lifting member for releasing or winding up the flexible lifting member; A rigid lifting unit, connected to the flexible lifting member and extending into the box body; the rigid lifting unit includes a housing, a second driving member, a rigid lifting member and a gripper; a first plane is provided on the outer surface of the housing; a channel extending along its axis is provided in the housing; the rigid lifting member is movably disposed in the channel along the axis of the channel; the second driving member is connected to the rigid lifting member for driving the rigid lifting member to move; the gripper is connected to the rigid lifting member; A platform, installed inside the box body and located below the flexible lifting unit; the platform is provided with a through hole for the housing to extend into; a stopping surface for supporting the first plane is formed above the platform.

2. The filter element maintenance equipment according to claim 1, characterized in that, A centering and guiding structure is provided between the housing and the platform to coaxially arrange the housing with the through hole after the housing extends into the through hole.

3. The filter element maintenance device according to claim 2, wherein, The centering and guiding structure includes a first guiding surface on the platform and a second guiding surface on the outer surface of the housing; the first guiding surface is V-shaped or conical, and the shape of the second guiding surface is adapted to the shape of the first guiding surface.

4. A filter element maintenance device according to claim 1, characterized in that, The flexible lifting unit further includes an outer shell, a reel and a first pulley; the first driving member is installed on the outer shell and is in transmission connection with the reel; the first pulley is installed on the outer shell; the flexible lifting member is wound around the reel and extends into the box body after passing through the first pulley.

5. A filter element maintenance device according to claim 4, characterized in that, A force sensor is provided on the flexible lifting member, and the force sensor is used to monitor the tension of the flexible lifting member.

6. The filter element maintenance equipment according to claim 1, characterized in that The flexible lifting member is a steel wire rope, or a chain, or other flexible cable.

7. A filter element repair device according to any one of claims 1 to 6, characterized in that, The platform includes a platform body and a clamping mechanism; the clamping mechanism is installed on the platform body for clamping the housing or the filter element.

8. A filter element maintenance device according to claim 7, characterized in that, The clamping mechanism includes two oppositely arranged clamping members and a third driving member; the third driving member is respectively connected to the two clamping members for driving the two clamping members to open and close.

9. A method of using the filter element maintenance equipment described in any one of claims 1 to 8 to disassemble a filter element, characterized in that, Including the following steps: Place the side of the box body with the opening facing the filter element on the installation surface of the filter element to form an enclosed space; The first driving member releases the flexible lifting member, so that the rigid lifting unit moves downward under the action of gravity; As the rigid lifting unit moves downward, the housing enters the through hole of the platform until the first plane on the outer surface of the housing abuts against the stopping surface on the platform; The second driving member drives the rigid lifting member to move downward until the gripper grabs the filter element; The second driving member drives the rigid lifting member to move upward to reset and remove the filter element; The first driving member winds up the flexible lifting member to lift the filter element completely away from the installation surface.

10. A method of using a filter element maintenance device described in claim 7 or 8 to disassemble a filter element, characterized in that, Including the following steps: Place the side of the box body with the opening facing the filter element on the installation surface of the filter element to form an enclosed space; The first driving member releases the flexible lifting member, so that the rigid lifting unit moves downward under the action of gravity; As the rigid lifting unit moves downward, the housing enters the through hole of the platform until the first plane on the outer surface of the housing abuts against the stopping surface on the platform; The clamping mechanism clamps the housing; The second driving member drives the rigid lifting member to move downward until the gripper grabs the filter element; The second driving member drives the rigid lifting member to move upward to reset and remove the filter element; The first driving member winds up the flexible lifting member, causing the filter element to be lifted completely away from the mounting surface and reach a preset height; The clamping mechanism clamps the filter element, and the gripper releases the filter element.

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