A device for measuring the depth of sludge in a water plant sedimentation tank

Abstract

This invention provides a sludge depth measuring device for sedimentation tanks in water plants, comprising a base, a rotating assembly, a suspended beam assembly, a measuring assembly, and a measuring cylinder. The base is disposed on the upper surface of the sedimentation tank, with its upper end fixedly connected to the lower end of the rotating assembly. The suspended beam assembly is disposed on the upper end of the rotating assembly, and the measuring assembly is fixedly installed inside the suspended beam assembly. One end of the measuring assembly is fixedly connected to the rotating assembly, and the other end is fixedly connected to one end of the measuring cylinder, which is located outside the suspended beam assembly. The measuring assembly drives the measuring cylinder to linearly displace. This sludge depth measuring device for sedimentation tanks in water plants can stably deploy the testing instrument into water at different depths, solving the problems of traditional manual measurement methods that can only obtain sludge thickness at a single depth and that unstable instrument deployment leads to agitation of the sludge at the bottom of the sedimentation tank, significantly affecting sludge concentration and resulting in low accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of water treatment in water plants, and in particular relates to a device for measuring the depth of sludge in sedimentation tanks of water plants. Background Technology

[0002] In the water treatment process of water plants, the operating status of sludge sedimentation tanks directly affects the sludge treatment efficiency. Among them, sludge depth is a key monitoring indicator. The traditional method for measuring sludge depth is mainly the sampling tube combined with a measuring tape. However, the sampling tube combined with a measuring tape method is prone to disturbing the layer interface during sampling, making interface identification difficult. At the same time, when measuring the sampling depth with a measuring tape, data needs to be read manually and simultaneously, which has reading delays and visual errors, resulting in wasted manpower and low overall efficiency. Utility Model Content

[0003] In view of this, the present invention aims to propose a sludge depth measuring device for sedimentation tanks in water plants, so as to solve the problems of manpower waste and low overall efficiency caused by the traditional method of measuring sludge depth using a sampling tube and a measuring tape.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A sludge depth measuring device for a sedimentation tank in a water plant includes a base, a rotating assembly, a suspended beam assembly, a measuring assembly, and a measuring cylinder. The base is disposed on the upper surface of the sedimentation tank, and the upper end of the base is fixedly connected to the lower end of the rotating assembly. The suspended beam assembly is disposed on the upper end of the rotating assembly, and the measuring assembly is fixedly installed inside the suspended beam assembly. One end of the measuring assembly is fixedly connected to the rotating assembly, and the other end of the measuring assembly is fixedly connected to one end of the measuring cylinder. The measuring cylinder is located outside the suspended beam assembly, and the measuring assembly is used to drive the measuring cylinder to linearly displace.

[0006] Furthermore, the lower end of the base is provided with multiple lockable casters, and the outer periphery of the casters is rolledly connected to the upper surface of the sedimentation tank. One side of the base is provided with an opening, and a cabinet door is hinged to each side of the base. The cabinet door is used to close the opening. The upper end of the base is provided with a groove, and the inner ring of the groove is fixedly sleeved on the outer periphery of the ball bearing. The inner ring of the ball bearing is sleeved on one end of the rotating component.

[0007] Furthermore, the rotating assembly includes a platform and a connecting shaft. One end of the platform is fixedly connected to one end of the connecting shaft, and the other end of the connecting shaft is fixedly sleeved on the inner ring of a ball bearing. The connecting shaft is used to support the rotation of the platform.

[0008] Furthermore, the cantilever assembly includes a telescopic unit and a drive unit. The telescopic unit is fixedly mounted on the rotating assembly, and the drive unit is fixedly mounted on the lower end of the telescopic unit. The actuating end of the drive unit is fixedly connected to the telescopic end of the telescopic unit.

[0009] Furthermore, the telescopic unit includes a bracket, a first cantilever beam, and a second cantilever beam. One end of the bracket is fixedly mounted on the platform, and the other end of the bracket is fixedly connected to one end of the first cantilever beam. The second cantilever beam is disposed inside the first cantilever beam. The bracket has an L-shaped structure, and a protective plate is detachably provided on the periphery of the bracket. According to one embodiment of the present invention, the upper ends of both sides of the first cantilever beam are respectively provided with limiting protrusions, and the limiting protrusions are located on the inner sidewall of the first cantilever beam. The two ends of the limiting protrusions are respectively provided with a first limiting block and a second limiting block. The first limiting block and the second limiting block are used to limit the extreme position of the displacement of the second cantilever beam. A positioning roller is fixedly mounted on one end of the first cantilever beam, and the positioning roller is used to limit the displacement trajectory of the measuring component. The lower end of the first cantilever beam is provided with a support leg. The upper end of the second cantilever beam is slidably connected to the lower end of the first limiting block, and the upper end of the second cantilever beam is provided with a third limiting block. The upper end of the third limiting block is slidably connected to the lower end of the limiting protrusion, and the third limiting block is located between the first limiting block and the second limiting block.

[0010] Furthermore, the drive unit includes a first mounting plate, a second mounting plate, a lead screw, a guide rail, and a rotary motor. The first mounting plate and the second mounting plate are respectively fixedly mounted on both sides of the lower end of the first cantilever beam, and the outer periphery of the lead screw and the guide rail are respectively rotatably connected to the first mounting plate and the second mounting plate. The rotary motor is fixedly mounted on the first mounting plate, and the output shaft of the rotary motor is fixedly connected to one end of the lead screw. The drive unit also includes a moving platform, a connecting rod, and a third mounting plate. The moving platform is threadedly connected to the outer periphery of the lead screw and the guide rail. The connecting rod is fixedly mounted on one side of the moving platform, and one end of the connecting rod is fixedly connected to one side of the third mounting plate. The third mounting plate is fixedly connected to the lower end of the second cantilever beam.

[0011] Furthermore, the measuring component includes a wire feeding unit, a nylon rope, and an encoder. The wire feeding unit and the encoder are respectively fixedly mounted on the rotating component. The wire feeding unit is provided with a nylon rope, which is rotatably connected to the execution end of the encoder. The wire feeding unit and the encoder are respectively signal-connected to the controller.

[0012] Furthermore, the measuring cylinder includes a cylinder body, a lifting frame, a circular hole, and a sliding rod. The upper end of the cylinder body is rotatably connected to one end of the lifting frame, and the lower end of the cylinder body is provided with a circular hole. The cylinder body is provided with a sliding rod, and one end of the sliding rod is fixedly connected to the inner wall of one end of the cylinder body. The other end of the sliding rod is provided with a fourth limiting block. A hole plug is slidably connected to the outer periphery of the sliding rod. One side of the hole plug is provided with a positioning protrusion that matches the circular hole, and the outer periphery of the positioning protrusion is slidably sleeved on the inner ring of the circular hole. The hole plug is used to close the circular hole.

[0013] Compared with the prior art, the sludge depth measuring device for sedimentation tanks in water plants described in this utility model has the following advantages:

[0014] (1) The sludge depth measuring device for sedimentation tanks in water plants described in this utility model is equipped with a base with lockable casters, which can move to measure the sludge depth at different points. Data from multiple points can better reflect the thickness of sludge in the sedimentation tank and improve the accuracy of detection. A cabinet door is provided so that record sheets and other instruments can be stored in the internal space of the base, thereby increasing work efficiency.

[0015] (2) The sludge depth measuring device for sedimentation tanks in water plants described in this utility model is equipped with a retractable cantilever support, which can detect the sludge thickness at multiple points in the center of the tank, reduce errors, and increase the accuracy and reliability of the detection data.

[0016] (3) The sludge depth measuring device for sedimentation tanks in water plants described in this utility model is equipped with a line-laying unit. The line-laying unit can place the measuring cylinder at the corresponding position in the sedimentation tank at a certain speed, thereby reducing the disturbance of the stratification interface caused by human placement, improving the accuracy of the data, and improving work efficiency.

[0017] (4) The sludge depth measuring device for sedimentation tanks in water plants described in this utility model is equipped with a nylon rope and an encoder. The nylon rope is marked, and the encoder can accurately measure the length of the wire by controlling the controller, reducing the delay and visual error caused by manual data reading, increasing the reliability of the data, and improving work efficiency. Attached Figure Description

[0018] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall cross-sectional structure of a sludge depth measuring device for a water plant sedimentation tank, as described in an embodiment of this utility model.

[0020] Figure 2 This is an exploded structural diagram of the base described in an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the rotating component described in an embodiment of the present invention;

[0022] Figure 4 This is a structural schematic diagram of the cross-section of the cantilever beam assembly described in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the telescopic unit described in an embodiment of the present utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the first cantilever beam described in an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the second cantilever beam described in an embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of the drive unit described in an embodiment of the present utility model;

[0027] Figure 9 This is a schematic diagram of the structure of the measuring component described in an embodiment of the present utility model;

[0028] Figure 10 This is a cross-sectional structural diagram of the measuring cylinder described in an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1-Base; 11-Cast; 12-Opening; 13-Cabinet door; 14-Groove; 15-Ball bearing; 2-Rotating assembly; 21-Platform; 22-Connecting shaft; 3-Cantilever assembly; 31-Telescopic unit; 311-Bracket; 3111-Protective plate; 312-First cantilever; 3121-Limiting protrusion; 3122-First limiting block; 3123-Second limiting block; 3124-Positioning roller; 3125-Outrigger; 313-Second cantilever; 3131-Second limiting... Position block; 32-Drive unit; 321-First mounting plate; 322-Second mounting plate; 323-Lead screw; 324-Guide rail; 325-Rotating motor; 326-Moving platform; 327-Connecting rod; 328-Third mounting plate; 4-Measuring component; 41-Wire feeding unit; 42-Nylon rope; 43-Encoder; 5-Measuring cylinder; 51-Cylinder body; 52-Lifting frame; 53-Round hole; 54-Slide rod; 541-Fourth limit block; 55-Hole plug; 551-Positioning protrusion. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0032] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] like Figure 1 As shown, a sludge depth measuring device for a sedimentation tank in a water plant includes a base 1, a rotating assembly 2, a suspended beam assembly 3, a measuring assembly 4, and a measuring cylinder 5. The base 1 is set on the upper surface of the sedimentation tank, and its upper end is fixedly connected to the lower end of the rotating assembly 2. The suspended beam assembly 3 is set on the upper end of the rotating assembly 2, and the measuring assembly 4 is fixedly installed inside the suspended beam assembly 3. One end of the measuring assembly 4 is fixedly connected to the rotating assembly 2, and the other end of the measuring assembly 4 is fixedly connected to one end of the measuring cylinder 5. The measuring cylinder 5 is located outside the suspended beam assembly 3. The measuring assembly 4 is used to drive the measuring cylinder 5 to linearly displace. The suspended beam assembly 3 allows for multi-point measurement based on actual conditions, and multiple sets of parallel data reduce errors and increase data reliability. The measuring assembly 4 allows the measuring cylinder 5 to be dropped at a certain rate, reducing stratification disturbance caused by manual dropping, which affects the detection data, reduces manual labor, and increases work efficiency.

[0036] like Figure 2As shown, the lower end of the base 1 is provided with multiple lockable casters 11, and the outer periphery of the casters 11 is rotatably connected to the upper surface of the sedimentation tank. One side of the base 1 is provided with an opening 12, and a cabinet door 13 is hinged to each side of the base 1. The cabinet door 13 is used to close the opening 12. The upper end of the base 1 is provided with a groove 14, and the inner ring of the groove 14 is fixedly sleeved on the outer periphery of the ball bearing 15. The inner ring of the ball bearing 15 is sleeved on one end of the rotating component 2. The lockable casters 11 can be used to push the base 1 to move and then lock the casters 11 to perform measurements at different points, increasing the stability of the test and the accuracy of the data. The cabinet door 13 can close the internal space of the base 1, which can store test records, prevent the records from being damaged or lost, and improve work efficiency.

[0037] like Figure 3 As shown, the rotating assembly 2 includes a platform 21 and a connecting shaft 22. One end of the platform 21 is fixedly connected to one end of the connecting shaft 22, and the other end of the connecting shaft 22 is fixedly sleeved on the inner ring of the ball bearing 15. The connecting shaft 22 is used to support the rotation of the platform 21. By setting the rotating assembly 2, the measuring cylinder 5 can be moved to the outside of the sedimentation tank for observation, maintenance and replacement, thereby improving work efficiency and extending the service life of the equipment.

[0038] like Figure 4 As shown, the cantilever assembly 3 includes a telescopic unit 31 and a drive unit 32. The telescopic unit 31 is fixedly installed on the rotating assembly 2, and the drive unit 32 is fixedly installed at the lower end of the telescopic unit 31. The execution end of the drive unit 32 is fixedly connected to the telescopic end of the telescopic unit 31. The drive unit 32 is configured to extend or shorten the telescopic unit 31, which can cover all points, increase the accuracy of data, and improve work efficiency.

[0039] like Figure 5 As shown, the telescopic unit 31 includes a bracket 311, a first cantilever beam 312, and a second cantilever beam 313. One end of the bracket 311 is fixedly installed on the platform 21, and the other end of the bracket 311 is fixedly connected to one end of the first cantilever beam 312. The second cantilever beam 313 is arranged inside the first cantilever beam 312. The bracket 311 has an L-shaped structure, and a protective plate 3111 is detachably provided on the periphery of the bracket 311. The detachable protective plate 3111 allows for quick disassembly and maintenance of the equipment and improves work safety, eliminating potential safety hazards.

[0040] like Figure 6As shown, the upper ends of both sides of the first suspension beam 312 are respectively provided with limiting protrusions 3121, and the limiting protrusions 3121 are located on the inner sidewall of the first suspension beam 312. The two ends of the limiting protrusions 3121 are respectively provided with a first limiting block 3122 and a second limiting block 3123. The first limiting block 3122 and the second limiting block 3123 are used to limit the extreme position of the displacement of the second suspension beam 313. One end of the first suspension beam 312 is fixedly installed with a positioning roller 3124, which is used to limit the displacement trajectory of the measuring component 4. The lower end of the first suspension beam 312 is provided with a support leg 3125. The setting of the limiting protrusions 3121 and the first limiting block 3122 and the second limiting block 3123 can fix the movement trajectory of the second suspension beam 313, ensure the normal operation of the equipment, improve safety, and reduce safety hazards. The setting of the roller 3124, through the upper and lower parallel double roller design, can ensure that the nylon rope 42 runs in a specific position, increase the continuity of the device operation, and improve work efficiency.

[0041] like Figure 7 As shown, the upper end of the second suspension beam 313 is slidably connected to the lower end of the first limiting block 3122. The upper end of the second suspension beam 313 is provided with a third limiting block 3131. The upper end of the third limiting block 3131 is slidably connected to the lower end of the limiting protrusion 3121. The third limiting block 3131 is located between the first limiting block 3122 and the second limiting block 3123. Setting the third limiting block 3131 can ensure the running trajectory of the second suspension beam 313, ensure the safety of the device, and reduce safety hazards.

[0042] like Figure 8 As shown, the drive unit 32 includes a first mounting plate 321, a second mounting plate 322, a lead screw 323, a guide rail 324, and a rotary motor 325. The first mounting plate 321 and the second mounting plate 322 are respectively fixedly mounted on both sides of the lower end of the first suspension beam 312, and the outer periphery of the lead screw 323 and the guide rail 324 are respectively rotatably connected to the first mounting plate 321 and the second mounting plate 322. The rotary motor 325 is fixedly mounted on the first mounting plate 321, and the output shaft of the rotary motor 325 is fixedly connected to one end of the lead screw 323.

[0043] like Figure 8As shown, the drive unit 32 also includes a moving platform 326, a connecting rod 327, and a third mounting plate 328. The moving platform 326 is threaded to the outer periphery of the lead screw 323 and the guide rail 324. The connecting rod 327 is fixedly mounted on one side of the moving platform 326. One end of the connecting rod 327 is fixedly connected to one side of the third mounting plate 328, and the third mounting plate 328 is fixedly connected to the lower end of the second suspension beam 313. By setting the third mounting plate 328, the first suspension beam 312 and the second suspension beam 313 are connected. By rotating the motor 325, the lead screw 323 is driven to rotate, thereby driving the moving platform 326 to move, and further driving the second suspension beam 313 to move. This allows for the measurement of data at different points, increasing the reliability of the data.

[0044] like Figure 9 As shown, the measuring component 4 includes a wire feeding unit 41, a nylon rope 42, and an encoder 43. The wire feeding unit 41 and the encoder 43 are respectively fixedly mounted on the rotating component 2. The nylon rope 42 is set on the wire feeding unit 41 and is rotatably connected to the execution end of the encoder 43. The wire feeding unit 41 and the encoder 43 are respectively connected to the controller. The wire feeding unit 41 is a winch, which is an existing device, model PA200. The encoder 43 can automatically record the wire feeding length, reduce the delay and error caused by manual data reading, improve work efficiency, and reduce manual labor.

[0045] like Figure 10 As shown, the measuring cylinder 5 includes a cylinder body 51, a lifting frame 52, a circular hole 53, and a sliding rod 54. The upper end of the cylinder body 51 is rotatably connected to one end of the lifting frame 52. The lower end of the cylinder body 51 is provided with a circular hole 53. The sliding rod 54 is provided inside the cylinder body 51, and one end of the sliding rod 54 is fixedly connected to the inner wall of one end of the cylinder body 51. The other end of the sliding rod 54 is provided with a fourth limiting block 541. A plug 55 is slidably connected to the outer periphery of the sliding rod 54. A positioning protrusion 551 matching the circular hole 53 is provided on one side of the plug 55, and the outer periphery of the positioning protrusion 551 is slidably sleeved on the inner ring of the circular hole 53. The plug 55 is used to seal the circular hole 53. The plug 55 is a composite lightweight buoyancy material. By setting a slidable plug 55, when the measuring cylinder 5 is placed in water, the plug 55 floats up. The sludge at the bottom of the sedimentation tank enters the measuring cylinder 5 through the bottom circular hole 53. When the measuring cylinder 5 is lifted, the plug 55 seals the circular hole 53 under the action of the sludge, completing the collection work.

[0046] The working process of a sludge depth measuring device for sedimentation tanks in water plants:

[0047] Before starting the measurement, open cabinet door 13 to retrieve the record. Move the device to a suitable position in the sedimentation tank using casters 11. The drive unit 32's rotating motor 325 drives the lead screw 323 to rotate, causing the moving platform 326 to move linearly within the first suspension beam 312 via connecting rod 327 and third mounting plate 328, adjusting the telescopic length of the suspension beam assembly 3. Simultaneously, the rotating assembly 2's platform 21 can rotate on the ball bearing 15 of the base 1 via connecting shaft 22, changing the direction of the suspension beam assembly 3. The wire feeding unit 41 rotates to release the nylon rope 42. Rope 42, via positioning roller 3124 and encoder 43, drives measuring cylinder 5 to descend. Under the control of the controller, encoder 43 controls the length of nylon rope 42 released. During the descent of measuring cylinder 5, plug 55 opens the round hole 53 under gravity, and sludge enters cylinder 51. After reaching the corresponding depth, wire feeding unit 41 reverses to retract nylon rope 42, and plug 55 closes round hole 53. The sludge depth is obtained by the length of nylon rope 42 recorded by encoder 43. Rotating platform 21 adjusts measuring cylinder 5 to the corresponding position and observes and records the stratification of sludge inside measuring cylinder 5.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 device for measuring the depth of sludge in a sedimentation tank of a water plant, characterized in that: The device includes a base (1), a rotating assembly (2), a suspended beam assembly (3), a measuring assembly (4), and a measuring cylinder (5). The base (1) is set on the upper surface of the sedimentation tank. The upper end of the base (1) is fixedly connected to the lower end of the rotating assembly (2). The suspended beam assembly (3) is set on the upper end of the rotating assembly (2). The measuring assembly (4) is fixedly installed inside the suspended beam assembly (3). One end of the measuring assembly (4) is fixedly connected to the rotating assembly (2), and the other end of the measuring assembly (4) is fixedly connected to one end of the measuring cylinder (5). The measuring cylinder (5) is located outside the suspended beam assembly (3). The measuring assembly (4) is used to drive the measuring cylinder (5) to move linearly.

2. The sludge depth measuring device for sedimentation tanks in water plants according to claim 1, characterized in that: The lower end of the base (1) is provided with multiple lockable casters (11), and the outer periphery of the casters (11) is rolled to the upper surface of the sedimentation tank. The base (1) has an opening (12) on one side, and a cabinet door (13) is hinged to each side of the base (1). The cabinet door (13) is used to close the opening (12). The upper end of the base (1) is provided with a groove (14). The inner ring of the groove (14) is fixedly sleeved on the outer periphery of the ball bearing (15). The inner ring of the ball bearing (15) is sleeved on one end of the rotating component (2).

3. The sludge depth measuring device for a water plant sedimentation tank according to claim 2, characterized in that: The rotating assembly (2) includes a platform (21) and a connecting shaft (22). One end of the platform (21) is fixedly connected to one end of the connecting shaft (22), and the other end of the connecting shaft (22) is fixedly sleeved on the inner ring of the ball bearing (15). The connecting shaft (22) is used to support the rotation of the platform (21).

4. The sludge depth measuring device for sedimentation tanks in water plants according to claim 1, characterized in that: The cantilever assembly (3) includes a telescopic unit (31) and a drive unit (32). The telescopic unit (31) is fixedly mounted on the rotating assembly (2). The drive unit (32) is fixedly mounted on the lower end of the telescopic unit (31). The execution end of the drive unit (32) is fixedly connected to the telescopic end of the telescopic unit (31).

5. The sludge depth measuring device for sedimentation tanks in water plants according to claim 4, characterized in that: The telescopic unit (31) includes a bracket (311), a first cantilever beam (312) and a second cantilever beam (313). One end of the bracket (311) is fixedly installed on the platform (21), and the other end of the bracket (311) is fixedly connected to one end of the first cantilever beam (312). The second cantilever beam (313) is set inside the first cantilever beam (312). The bracket (311) has an L-shaped structure, and a protective plate (3111) is detachably provided on the periphery of the bracket (311).

6. The sludge depth measuring device for sedimentation tanks in water plants according to claim 5, characterized in that: The upper ends of both sides of the first suspension beam (312) are respectively provided with limiting protrusions (3121), and the limiting protrusions (3121) are located on the inner side wall of the first suspension beam (312). The two ends of the limiting protrusions (3121) are respectively provided with a first limiting block (3122) and a second limiting block (3123). The first limiting block (3122) and the second limiting block (3123) are used to limit the extreme position of the displacement of the second suspension beam (313). A positioning roller (3124) is fixedly installed at one end of the first suspension beam (312). The positioning roller (3124) is used to limit the displacement trajectory of the measuring component (4). The lower end of the first suspension beam (312) is provided with a support leg (3125). The upper end of the second suspension beam (313) is slidably connected to the lower end of the first limiting block (3122). The upper end of the second suspension beam (313) is provided with a third limiting block (3131). The upper end of the third limiting block (3131) is slidably connected to the lower end of the limiting protrusion (3121), and the third limiting block (3131) is located between the first limiting block (3122) and the second limiting block (3123).

7. The sludge depth measuring device for a water plant sedimentation tank according to claim 4, characterized in that: The drive unit (32) includes a first mounting plate (321), a second mounting plate (322), a lead screw (323), a guide rail (324), and a rotary motor (325). The first mounting plate (321) and the second mounting plate (322) are respectively fixedly mounted on both sides of the lower end of the first cantilever beam (312), and the outer periphery of the lead screw (323) and the guide rail (324) are respectively rotatably connected to the first mounting plate (321) and the second mounting plate (322). The rotary motor (325) is fixedly mounted on the first mounting plate (321), and the output shaft of the rotary motor (325) is fixedly connected to one end of the lead screw (323). The drive unit (32) also includes a moving platform (326), a connecting rod (327) and a third mounting plate (328). The moving platform (326) is threaded to the periphery of the lead screw (323) and the guide rail (324). The connecting rod (327) is fixedly installed on one side of the moving platform (326). One end of the connecting rod (327) is fixedly connected to one side of the third mounting plate (328), and the third mounting plate (328) is fixedly connected to the lower end of the second cantilever beam (313).

8. The sludge depth measuring device for sedimentation tanks in water plants according to claim 1, characterized in that: The measuring component (4) includes a wire feeding unit (41), a nylon rope (42), and an encoder (43). The wire feeding unit (41) and the encoder (43) are fixedly mounted on the rotating component (2). The nylon rope (42) is provided on the wire feeding unit (41). The nylon rope (42) is tumbled to the execution end of the encoder (43). The wire feeding unit (41) and the encoder (43) are respectively connected to the controller.

9. The sludge depth measuring device for sedimentation tanks in water plants according to claim 1, characterized in that: The measuring cylinder (5) includes a cylinder body (51), a lifting frame (52), a round hole (53), and a sliding rod (54). The upper end of the cylinder body (51) is rotatably connected to one end of the lifting frame (52). The lower end of the cylinder body (51) is provided with a round hole (53). The cylinder body (51) is provided with a sliding rod (54), and one end of the sliding rod (54) is fixedly connected to the inner wall of one end of the cylinder body (51). The other end of the sliding rod (54) is provided with a fourth limiting block (541). The outer periphery of the sliding rod (54) is slidably connected to a hole plug (55). One side of the hole plug (55) is provided with a positioning protrusion (551) that matches the round hole (53), and the outer periphery of the positioning protrusion (551) is slidably sleeved on the inner ring of the round hole (53). The hole plug (55) is used to close the round hole (53).

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