Doppler bilge well liquid level flow detection device

Abstract

The utility model discloses a Doppler bilge well liquid level flow detection device, which belongs to the technical field of flow measurement and comprises a fixing component. A limiting assembly is mounted on the fixing assembly; a winding assembly is mounted on the fixing assembly; and the placing and coiling assembly comprises a placing assembly and a coiling assembly. By means of the mode, the probe of the Doppler flowmeter can be collected, released or replaced conveniently, and meanwhile the situation that the wire is damaged due to friction between the wire and the inner wall of the sewage well body can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of flow measurement, in particular to a Doppler sewage well liquid level flow detection device. Background Art

[0002] A Doppler flowmeter is an instrument used to measure the flow rate of a fluid. It uses the Doppler effect to measure the velocity of particles in the fluid, thereby inferring the flow rate of the fluid. Doppler flowmeters are usually used to measure the flow rate of liquids or gases, and are widely used in industrial production, environmental monitoring, scientific research and other fields.

[0003] Chinese patent CN117053029A discloses a mounting mechanism for a Doppler ultrasonic flowmeter for downhole exploration, including a mounting plate, and also including: a storage unit, arranged at the upper part of the mounting plate, for storing a flowmeter body; a fixing unit, arranged at the lower part of the mounting plate, for fixing the flowmeter body to the well wall; a counterweight unit, arranged at the lower part of the fixing unit, for fixing the device at the bottom of the well; a winding unit, arranged on the fixing unit and connected to the flowmeter body through a traction rope, for winding and releasing the flowmeter body.

[0004] However, this patent cannot reel in the wire of the flow meter. When the flow meter needs to be retracted, the reeling unit can only retract the flow meter body but cannot retract the wire. The wire needs to be retracted manually, and when it is retracted or placed, the wire will rub against the well wall, causing damage to the wire.

[0005] Based on this, the utility model designs a Doppler sewage well liquid level flow detection device to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a Doppler sewage well liquid level flow detection device.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A Doppler sewage well liquid level flow detection device;

[0009] including a fixing assembly for fixing the detection device;

[0010] A limit position component is installed on the fixing component;

[0011] The fixed component is provided with a wire winding component;

[0012] The placing and winding assembly comprises a placing assembly and a winding assembly, both of which are connected to a fixing assembly, and the placing assembly and the winding assembly are connected.

[0013] Furthermore, the fixed assembly includes a handle, a first connecting plate, a second connecting plate, a first rotating disk, a first gear, a fixed plate, a first rack, a stop block and a rotating rod, the front and rear ends of the handle are respectively fixedly connected to the first connecting plate and the second connecting plate, the front and rear sides of the lower end of the handle are fixedly connected to the fixed plates, the first rack is slidably connected in the left end slide groove of the front fixing plate and the right end slide groove of the rear fixing plate, the outer ends of the first rack are fixedly connected to the stop blocks, the upper end of the rotating rod passes through the handle and is fixedly connected to the first rotating disk, the rotating rod is rotatably connected to the handle, the lower end of the rotating rod is fixedly connected to the first gear, and the first gear is meshingly connected to the first rack.

[0014] Furthermore, the handle and the first gear are both connected to the limiting assembly, the first connecting plate is connected to the placing assembly, and the fixing plate is connected to the winding assembly.

[0015] Furthermore, a rubber pad is fixedly connected to the outer end of the stop block.

[0016] Furthermore, the limit assembly includes a spring buffer, a limit plate and a conical block. The spring buffer is fixedly connected to the upper right side of the handle, the right end of the spring buffer is fixedly connected to the limit plate, the left side of the lower end of the limit plate is fixedly connected to the conical block, and the conical block is plugged into the first gear.

[0017] Furthermore, the placement assembly includes a mounting block, a worm, a turbine, a second rack, a motor, a placement plate, a Doppler flowmeter probe and a second gear. The left and right sides of the upper end of the first connecting plate are fixedly connected to the mounting blocks, the inner end of the mounting block is rotatably connected to the worm, the motor is fixedly connected to the left end of the left mounting block, the output end of the motor is fixedly connected to the worm, the second gear is rotatably connected to the rear side of the upper end of the handle, the rear end connecting shaft of the turbine is fixedly connected to the front end of the second gear, and the turbine and the second gear are coaxial, the turbine and the worm are meshingly connected, the upper end of the second rack passes through the square groove on the rear side of the right end of the handle and is meshingly connected to the second gear, the second rack is slidably connected to the handle, the second rack is staggered front and rear with the mounting block on the right side, the lower end of the second rack is fixedly connected to the placement plate, the upper end of the placement plate is detachably connected to the Doppler flowmeter probe by screws, and the second rack is connected to the winding assembly.

[0018] Furthermore, the winding assembly includes a limit block, a slide plate, a mounting plate, a third gear, a connecting rod, a spline block, a spline groove, a winding drum, a threaded rod and a third mounting plate. The upper end of the slide plate is embedded in the sliding groove of the limit block and is slidably connected to the limit block. The front end of the slide plate and the rear end of the mounting plate are rotatably connected to the connecting rod, and the spline blocks are fixedly connected to the spline blocks in a circular array at equal intervals on the connecting rod. The inner walls of the circular grooves of the fixing rods at the front and rear ends of the winding drum are provided with spline grooves that are plugged into the spline blocks. The connecting rod is plugged into the circular grooves on the winding drum, the front end of the front connecting rod passes through the mounting plate and is fixedly connected to the third gear, the third gear is meshed with the second rack, the rear end of the threaded rod is rotatably connected to the slide plate, the front end of the threaded rod passes through the mounting plate and is fixedly connected to the third mounting plate, and the threaded rod is threadedly connected to the mounting plate.

[0019] Furthermore, the limit block is fixedly connected to the lower end of the rear fixing plate, and the mounting plate is fixedly connected to the lower end of the front fixing plate.

[0020] The utility model has the following technical effects:

[0021] When the utility model fixes the detection device, first grasp the handle, move the detection device to the upper end of the sewage well body, and hang the detection device on the upper end of the sewage well body through the first connecting plate and the second connecting plate, then unlock the first gear through the limiting assembly, rotate the first rotating disk, the first rotating disk drives the first gear to rotate, the first gear drives the first rack to move outward, the first rack drives the abutment to move outward and abut the inner wall of the sewage well body, and then the limiting assembly is used to limit the first gear, and the fixing of the detection device is completed;

[0022] When the utility model unlocks the limit, the limit plate is pulled to the right, and the limit plate drives the cone block to move to the right and disengage from the first gear. At the same time, the limit plate stretches the spring of the spring buffer to complete the unlocking. After the detection device is fixed, the limit plate is released, and the limit plate moves to the left under the elastic action of the spring buffer. The limit plate drives the cone block to move to the left and insert into the tooth groove of the first gear to complete the limit.

[0023] During detection, the utility model drives the motor to rotate the worm, the worm drives the turbine to rotate, the turbine drives the second gear to rotate, the second gear drives the second rack to move downward, the second rack drives the placement plate to move downward, the placement plate drives the Doppler flowmeter probe to move downward, until the Doppler flowmeter probe penetrates into the sewage in the sewage well body, and at the same time, the second rack drives the third gear to rotate, the third gear drives the connecting rod to rotate, the connecting rod drives the winding drum to rotate under the action of the spline block and the spline groove, releases the wire wound on the winding drum, prevents the wire from being tightened, and pulls the Doppler flowmeter probe, ensuring that the Doppler flowmeter probe stably moves downward and penetrates into the water, the Doppler flowmeter probe detects the liquid level flow of the sewage, and transmits the measurement data to the Doppler flowmeter body;

[0024] When the Doppler flowmeter probe needs to be replaced, the motor drives the worm to rotate, the worm drives the turbine to rotate, the turbine drives the second gear to rotate, the second gear drives the second rack to move upward, the second rack drives the placement plate to move upward, the placement plate drives the Doppler flowmeter probe to move upward, until the Doppler flowmeter probe moves to the upper end of the sewage well body, and at the same time the second rack drives the third gear to rotate, the third gear drives the connecting rod to rotate, the connecting rod drives the winding drum to rotate under the action of the spline block and the spline groove, and the winding is wound on the winding drum. The wire is unlocked, the first gear is rotated, the first turntable is rotated, the stop block is moved inward and separated from the inner wall of the sewage well body, and then the handle is grasped to remove the detection device from the sewage well body, and the third mounting plate is rotated. The third mounting plate drives the slide plate to slide to the right along the slide groove of the limit block, and the slide plate drives the connecting rod and the spline block connected thereto to separate from the spline groove and the winding drum, and the winding drum is removed, and the guide wound on the winding drum is removed, and then the guide of the new Doppler flowmeter probe is wound on the winding drum, and then the winding drum and the Doppler flowmeter probe are installed to complete the replacement;

[0025] The utility model is convenient for retracting or replacing the Doppler flowmeter probe, and can also prevent the wire from rubbing against the inner wall of the sewage well body, thereby damaging the wire. The motor can drive the Doppler flowmeter probe to move up and down according to the depth of sewage in the sewage well body, so that the measurement result is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 The utility model is a three-dimensional Doppler sewage well liquid level flow detection device Figure 1 ;

[0028] Figure 2 It is a front view of a Doppler sewage well liquid level flow detection device of the utility model;

[0029] Figure 3 A top view of a Doppler sewage well liquid level flow detection device of the utility model;

[0030] Figure 4 The utility model is a three-dimensional Doppler sewage well liquid level flow detection device Figure 2 ;

[0031] Figure 5The utility model is a three-dimensional Doppler sewage well liquid level flow detection device Figure 3 ;

[0032] Figure 6 For along Figure 3 AA direction cross-sectional view;

[0033] Figure 7 for Figure 6 The enlarged view of point B in the middle;

[0034] Figure 8 for Figure 6 Enlarged view of point C in the middle.

[0035] The numbers in the figure represent:

[0036] 1. Sewage well body; 2. Fixing assembly; 21. Handle; 22. First connecting plate; 23. Second connecting plate; 24. First turntable; 25. First gear; 26. Fixing plate; 27. First rack; 28. Stop block; 29. ​​Rotating rod; 3. Limiting assembly; 31. Spring buffer; 32. Limiting plate; 33. Conical block; 4. Place winding assembly; 41. Place assembly; 411. Mounting block; 412. Worm ; 413, turbine; 414, second rack; 415, motor; 416, placement plate; 417, Doppler flowmeter probe; 418, second gear; 42, winding assembly; 421, limit block; 422, slide plate; 423, mounting plate; 424, third gear; 425, connecting rod; 426, spline block; 427, spline groove; 428, winding drum; 429, threaded rod; 4210, third mounting plate. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] The utility model is further described below in conjunction with embodiments.

[0039] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view. Example 1

[0040] Please refer to the instruction manual Figure 1-8 , a Doppler sewage well liquid level flow detection device;

[0041] It includes a fixing component 2 for fixing the detection device;

[0042] The limiting component 3 is installed on the fixing component 2;

[0043] The fixing component 2 is provided with a wire winding component 4;

[0044] The placing and winding assembly 4 includes a placing assembly 41 and a winding assembly 42 . Both the placing assembly 41 and the winding assembly 42 are connected to the fixing assembly 2 . The placing assembly 41 and the winding assembly 42 are connected.

[0045] When in use, the detection device is fixed to the upper inner wall of the sewage well body 1 by the fixing component 2, and the fixing component 2 is limited by the limiting component 3, and the placement component 41 is rotated to place the detection device into the sewage at the lower end of the sewage well body 1 or to retract it, and the placement component 41 drives the winding component 42 to retract the wire of the placement component 41, so as to facilitate the retraction or replacement of the placement component 41, and at the same time prevent the wire from rubbing against the inner wall of the sewage well body 1, thereby damaging the wire;

[0046] The fixing assembly 2 comprises a handle 21, a first connecting plate 22, a second connecting plate 23, a first rotating disk 24, a first gear 25, a fixing plate 26, a first rack 27, a stop block 28 and a rotating rod 29. The front and rear ends of the handle 21 are fixedly connected to the first connecting plate 22 and the second connecting plate 23 respectively. The front and rear sides of the lower end of the handle 21 are fixedly connected to the fixing plates 26. The first rack 27 is slidably connected in the left end slide groove of the front fixing plate 26 and the right end slide groove of the rear fixing plate 26. The outer ends of the first rack 27 are fixedly connected to the stop blocks 28. The upper end of the rotating rod 29 passes through the handle 21 and is fixedly connected to the first rotating disk 24. The rotating rod 29 is rotatably connected to the handle 21. The lower end of the rotating rod 29 is fixedly connected to the first gear 25, and the first gear 25 is meshingly connected to the first rack 27.

[0047] The handle 21 and the first gear 25 are both connected to the limiting assembly 3 , the first connecting plate 22 is connected to the placing assembly 41 , and the fixing plate 26 is connected to the winding assembly 42 .

[0048] Preferably, the outer end of the stop block 28 is fixedly connected with a rubber pad to increase the friction with the inner wall of the sewage well body 1 and better fix the detection device.

[0049] When fixing the detection device, first grasp the handle 21, move the detection device to the upper end of the sewage well body 1, and hang the detection device on the upper end of the sewage well body 1 through the first connecting plate 22 and the second connecting plate 23, then unlock the first gear 25 through the limiting assembly 3, rotate the first rotating disk 24, the first rotating disk 24 drives the first gear 25 to rotate, the first gear 25 drives the first rack 27 to move outward, the first rack 27 drives the block 28 to move outward against the inner wall of the sewage well body 1, and then the limiting assembly 3 is used to limit the first gear 25, and the fixing of the detection device is completed;

[0050] The limiting assembly 3 includes a spring buffer 31, a limiting plate 32 and a conical block 33. The spring buffer 31 is fixedly connected to the upper right side of the handle 21, the right end of the spring buffer 31 is fixedly connected to the limiting plate 32, the left side of the lower end of the limiting plate 32 is fixedly connected to the conical block 33, and the conical block 33 is plugged into the first gear 25.

[0051] When unlocking the limit, the limit plate 32 is pulled to the right, and the limit plate 32 drives the conical block 33 to move to the right and disengage from the first gear 25. At the same time, the limit plate 32 stretches the spring of the spring buffer 31 to complete the unlocking. After fixing the detection device, the limit plate 32 is released, and the limit plate 32 moves to the left under the elastic action of the spring buffer 31. The limit plate 32 drives the conical block 33 to move to the left and insert into the tooth groove of the first gear 25 to complete the limit.

[0052] The placement assembly 41 includes a mounting block 411, a worm 412, a turbine 413, a second rack 414, a motor 415, a placement plate 416, a Doppler flowmeter probe 417 and a second gear 418. The left and right sides of the upper end of the first connecting plate 22 are fixedly connected to the mounting block 411, the inner end of the mounting block 411 is rotatably connected to the worm 412, the motor 415 is fixedly connected to the left end of the left mounting block 411, the output end of the motor 415 is fixedly connected to the worm 412, the second gear 418 is rotatably connected to the rear side of the upper end of the handle 21, and the rear end connection shaft of the turbine 413 is fixedly connected to the At the front end of the second gear 418, the turbine 413 is cocentric with the second gear 418, the turbine 413 is meshed with the worm 412, the upper end of the second rack 414 passes through the square groove on the rear side of the right end of the handle 21 and is meshed with the second gear 418, the second rack 414 is slidably connected to the handle 21, the second rack 414 is staggered front and back with the mounting block 411 on the right side, the lower end of the second rack 414 is fixedly connected to a placement plate 416, the upper end of the placement plate 416 is detachably connected to a Doppler flowmeter probe 417 by screws, and the second rack 414 is connected to the winding assembly 42.

[0053] The winding assembly 42 includes a limit block 421, a slide plate 422, a mounting plate 423, a third gear 424, a connecting rod 425, a spline block 426, a spline groove 427, a winding drum 428, a threaded rod 429 and a third mounting plate 4210. The upper end of the slide plate 422 is embedded in the slide groove of the limit block 421 and is slidably connected to the limit block 421. The front end of the slide plate 422 and the rear end of the mounting plate 423 are both rotatably connected to the connecting rod 425. The spline blocks 426 are fixedly connected to the circumferential array of the connecting rod 425 at equal intervals. The winding drum 428 is provided with a threaded rod 429. The inner walls of the circular grooves of the front and rear end fixing rods 28 are provided with spline grooves 427 which are plugged into the spline blocks 426. The connecting rod 425 is plugged into the circular groove on the winding drum 428. The front end of the front connecting rod 425 passes through the mounting plate 423 and is fixedly connected to the third gear 424. The third gear 424 is meshedly connected to the second rack 414. The rear end of the threaded rod 429 is rotatably connected to the slide plate 422. The front end of the threaded rod 429 passes through the mounting plate 423 and is fixedly connected to the third mounting plate 4210. The threaded rod 429 is threadedly connected to the mounting plate 423.

[0054] The limiting block 421 is fixedly connected to the lower end of the rear fixing plate 26 , and the mounting plate 423 is fixedly connected to the lower end of the front fixing plate 26 .

[0055] During detection, the motor 415 drives the worm 412 to rotate, the worm 412 drives the turbine 413 to rotate, the turbine 413 drives the second gear 418 to rotate, the second gear 418 drives the second rack 414 to move downward, the second rack 414 drives the placement plate 416 to move downward, the placement plate 416 drives the Doppler flowmeter probe 417 to move downward, until the Doppler flowmeter probe 417 penetrates into the sewage in the sewage well body 1, and at the same time, the second rack 414 drives the third gear 424 to rotate, the third gear 424 drives the connecting rod 425 to rotate, and the connecting rod 425 drives the winding drum 428 to rotate under the action of the spline block 426 and the spline groove 427, releases the wire wound on the winding drum 428, prevents the wire from being tightened, and pulls the Doppler flowmeter probe 417, ensuring that the Doppler flowmeter probe 417 stably moves downward deep into the water, and the Doppler flowmeter probe 417 detects the liquid level flow of the sewage and transmits the measurement data to the Doppler flowmeter body.

[0056] When the Doppler flowmeter probe 417 needs to be replaced, the motor 415 drives the worm 412 to rotate, the worm 412 drives the turbine 413 to rotate, the turbine 413 drives the second gear 418 to rotate, the second gear 418 drives the second rack 414 to move upward, the second rack 414 drives the placement plate 416 to move upward, the placement plate 416 drives the Doppler flowmeter probe 417 to move upward, until the Doppler flowmeter probe 417 moves to the upper end of the sewage well body 1, and at the same time the second rack 414 drives the third gear 424 to rotate, the third gear 424 drives the connecting rod 425 to rotate, the connecting rod 425 drives the winding drum 428 to rotate under the action of the spline block 426 and the spline groove 427, and the winding is wound on the winding drum. 428, unlock the first gear 25, rotate the first turntable 24, move the stop block 28 inward and away from the inner wall of the sewage well body 1, then grab the handle 21 to remove the detection device from the sewage well body 1, rotate the third mounting plate 4210, the third mounting plate 4210 drives the slide plate 422 to slide to the right along the slide groove of the limit block 421, the slide plate 422 drives the connecting rod 425 and the spline block 426 connected thereto to be separated from the spline groove 427 and the winding drum 428, remove the winding drum 428, remove the guide wound on the winding drum 428, and then wind the guide of the new Doppler flowmeter probe 417 on the winding drum 428, and then install the winding drum 428 and the Doppler flowmeter probe 417 to complete the replacement;

[0057] The utility model makes it easy to retract or replace the Doppler flowmeter probe 417, and can also prevent the wire from rubbing against the inner wall of the sewage well body 1, thereby damaging the wire. The motor 415 can drive the Doppler flowmeter probe 417 to move up and down according to the depth of sewage in the sewage well body 1, so that the measurement result is more accurate.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A Doppler sewage well liquid level flow detection device, characterized in that: It comprises a fixing component (2) for fixing the detection device; A limit position component (3) is installed on the fixing component (2); The fixing component (2) is provided with a wire winding component (4); The placing and winding assembly (4) comprises a placing assembly (41) and a winding assembly (42), wherein the placing assembly (41) and the winding assembly (42) are both connected to the fixing assembly (2), and the placing assembly (41) and the winding assembly (42) are connected; The fixing assembly (2) comprises a handle (21), a first connecting plate (22), a second connecting plate (23), a first rotating disk (24), a first gear (25), a fixing plate (26), a first rack (27), a stopper (28) and a rotating rod (29); the front and rear ends of the handle (21) are fixedly connected to the first connecting plate (22) and the second connecting plate (23) respectively; the front and rear sides of the lower end of the handle (21) are fixedly connected to the fixing plate (26); the first rack (27) is slidably connected in the left end slide groove of the front fixing plate (26) and the right end slide groove of the rear fixing plate (26); the outer end of the first rack (27) is fixedly connected to the stopper (28); the upper end of the rotating rod (29) passes through the handle (21) and is fixedly connected to the first rotating disk (24); the rotating rod (29) is rotatably connected to the handle (21); the lower end of the rotating rod (29) is fixedly connected to the first gear (25); the first gear (25) is meshingly connected to the first rack (27); The handle (21) and the first gear (25) are both connected to the limit assembly (3), the first connecting plate (22) is connected to the placement assembly (41), and the fixing plate (26) is connected to the winding assembly (42); The placement assembly (41) comprises a mounting block (411), a worm (412), a turbine (413), a second rack (414), a motor (415), a placement plate (416), a Doppler flowmeter probe (417) and a second gear (418). The left and right sides of the upper end of the first connecting plate (22) are fixedly connected to the mounting blocks (411), the inner end of the mounting block (411) is rotatably connected to the worm (412), the motor (415) is fixedly connected to the left end of the left mounting block (411), the output end of the motor (415) is fixedly connected to the worm (412), the second gear (418) is rotatably connected to the rear side of the upper end of the handle (21), and the rear end of the turbine (413) is fixedly connected to the shaft. The gear wheel (414) is connected to the front end of the second gear (418), and the turbine (413) and the second gear (418) are cocentric. The turbine (413) and the worm (412) are meshed and connected. The upper end of the second rack (414) passes through the square groove on the rear side of the right end of the handle (21) and is meshed and connected with the second gear (418). The second rack (414) and the handle (21) are slidably connected. The second rack (414) and the mounting block (411) on the right side are arranged in a front-to-back offset manner. The lower end of the second rack (414) is fixedly connected to a placement plate (416). The upper end of the placement plate (416) is detachably connected to a Doppler flowmeter probe (417) via screws. The second rack (414) is connected to the winding assembly (42). The wire winding assembly (42) comprises a limit block (421), a slide plate (422), a mounting plate (423), a third gear (424), a connecting rod (425), a spline block (426), a spline groove (427), a wire winding drum (428), a threaded rod (429) and a third mounting plate (4210). The upper end of the slide plate (422) is embedded in the slide groove of the limit block (421) and is slidably connected to the limit block (421). The front end of the slide plate (422) and the rear end of the mounting plate (423) are both rotatably connected to the connecting rod (425). The spline blocks (426) are fixedly connected to the connecting rod (425) at equal intervals in a circumferential array. The inner walls of the circular grooves of the fixing rods at the front and rear ends of the drum (428) are provided with spline grooves (427) plugged into the spline blocks (426); the connecting rod (425) is plugged into the circular groove on the winding drum (428); the front end of the front connecting rod (425) passes through the mounting plate (423) and is fixedly connected to the third gear (424); the third gear (424) is meshedly connected to the second rack (414); the rear end of the threaded rod (429) is rotatably connected to the slide plate (422); the front end of the threaded rod (429) passes through the mounting plate (423) and is fixedly connected to the third mounting plate (4210); the threaded rod (429) is threadedly connected to the mounting plate (423).

2. The Doppler sewage well liquid level flow detection device according to claim 1, characterized in that: The outer end of the stop block (28) is fixedly connected with a rubber pad.

3. The Doppler sewage well liquid level flow detection device according to claim 2 is characterized in that: The limiting assembly (3) comprises a spring buffer (31), a limiting plate (32) and a conical block (33); the spring buffer (31) is fixedly connected to the right side of the upper end of the handle (21); the right end of the spring buffer (31) is fixedly connected to the limiting plate (32); the left side of the lower end of the limiting plate (32) is fixedly connected to the conical block (33); and the conical block (33) is plugged into the first gear (25).

4. The Doppler sewage well liquid level flow detection device according to claim 3, characterized in that: The limit block (421) is fixedly connected to the lower end of the rear fixing plate (26), and the mounting plate (423) is fixedly connected to the lower end of the front fixing plate (26).

Images