A river sludge depth measuring device

Abstract

The present invention relates to the technical field of sludge sounding, and discloses a river channel sludge sounding device, comprising: an outer plug-in mud tube and an inner plug-in mud tube, the edge of the outer plug-in mud tube is provided with anti-deviation wings, and the number of anti-deviation wings is two, and both sides of the two anti-deviation wings are provided with inclined surfaces, the outer wall of the outer plug-in mud tube is provided with a scale, the two sides of the outer plug-in mud tube are penetrated with a first side opening, and the two sides of the inner plug-in mud tube are penetrated with a second side opening. The river channel sludge sounding device can utilize the cooperation of the outer plug-in mud tube and the inner plug-in mud tube to insert the sludge inside, utilize the sludge pumping mechanism to pump the sludge into the inner plug-in mud tube, and utilize the sludge retaining ring to keep the soil of the corresponding depth in the corresponding position, and then compare the depth of the sludge inside the inner plug-in mud tube with the scale after the device is extracted, so as to obtain the type data of the sludge of the corresponding depth, and thus obtain the depth of the sludge, without the need for an external power supply, and has strong environmental adaptability.

Description

Technical Field

[0001] The invention relates to the technical field of sludge depth measurement, in particular to a river sludge depth measurement device. Background Art

[0002] Sludge is the sediment discharged from sewage treatment structures. The sediment with organic matter as the main component is called sludge. Its properties are easy to decompose and stink, fine particles, small specific gravity, high water content and not easy to dehydrate. It is a hydrophilic substance with a colloidal structure.

[0003] During field exploration or river construction, it is necessary to detect a safe area with shallow sludge for personnel to walk or construct. Therefore, a river sludge depth measuring device is needed to detect the depth of river sludge. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a river sludge depth measuring device to solve the problems mentioned in the above background.

[0005] The present invention provides the following technical solution: a river channel mud depth measuring device, comprising: an outer plug-in mud tube and an inner plug-in mud tube, the edge of the outer plug-in mud tube is provided with anti-deviation wings, and the number of anti-deviation wings is two, and both sides of the two anti-deviation wings are provided with inclined surfaces, the outer wall of the outer plug-in mud tube is provided with a scale, the two sides of the outer plug-in mud tube are provided with a first side opening, the two sides of the inner plug-in mud tube are provided with a second side opening, the inner wall of the second side opening is fixedly connected with a mud retaining ring, and the top of the inner plug-in mud tube is provided with A mud pumping mechanism, wherein a mud inserting cone is provided at one end of the inner mud tube away from the mud pumping mechanism, and the outer wall of the mud inserting cone is slidably connected to the inner wall of the outer mud tube, a guide mechanism is provided on the outer wall of the outer mud tube, the outer wall of the outer mud tube, the outer wall of the mud pumping mechanism and the outer wall of the guide mechanism are all rotatably connected with a toggle rod, an epitaxial block is provided on the outer wall of the outer mud tube, limiting holes are penetrated on both sides of the epitaxial block, and the number of the limiting holes is two, and an impact mechanism is provided on the top of the epitaxial block.

[0006] Preferably, the outer wall of the inner inserted mud tube is slidably connected to the inner wall of the outer inserted mud tube, and the shape and size of the first side opening match the shape and size of the second side opening.

[0007] Preferably, the mud pumping mechanism includes a mounting slide, a piston, a limit block, a mounting hole and a one-way valve, the mounting slide is fixedly sleeved on the inner wall of the inner inserted mud cylinder, and the outer wall of the mounting slide is rotatably connected to the inner wall of the outer inserted mud cylinder through a bearing, the piston is slidably connected to the inner wall of the mounting slide, the limit block is fixedly sleeved on the inner wall of the mounting slide, and the limit block is located below the piston, and ventilation holes are penetrated on both sides of the limit block, the mounting hole is penetrated through one end of the piston, and the one-way valve is fixedly connected to the inner wall of the mounting hole.

[0008] Preferably, the mud pumping mechanism also includes a traction rope, a first spring and a pull ring, the traction rope is fixedly connected to the side of the piston away from the limit block, the pull ring is fixedly connected to the end of the traction rope away from the piston, the first spring is arranged inside the mounting slide, and one end of the first spring is movably connected to the top of the piston, and the other end of the first spring is movably connected to the inner top wall of the mounting slide, and the traction rope is located inside the first spring.

[0009] Preferably, the guide mechanism includes a torsion cylinder, a guide groove and a third spring, the torsion cylinder is rotatably connected to the outer wall of the external mud cylinder, the guide groove is embedded in the outer wall of the torsion cylinder, and the guide groove includes a straight groove and an inclined groove, and the third spring is movably sleeved on the outer wall of the torsion cylinder.

[0010] Preferably, the impact mechanism includes a lifting cylinder, an impact weight and a toggle column, the lifting cylinder is slidably connected to the outer wall of the torsion cylinder, the impact weight is fixedly sleeved on the outer wall of the lifting cylinder, the toggle column is fixedly connected to the inner wall of the lifting cylinder, and the outer wall of the toggle column is slidably connected to the inner wall of the guide groove.

[0011] Preferably, the impact mechanism further comprises a mounting ring and a weight limiting column, wherein the mounting ring is fixedly sleeved on the outer wall of the torsion cylinder, and the weight limiting column is integrally connected to the bottom of the mounting ring.

[0012] Preferably, the number of the weight limiting columns is two, and the two weight limiting columns are distributed in parallel, and the outer wall of the weight limiting column is slidably connected to the inner wall of the limiting hole.

[0013] Preferably, one end of the third spring is movably connected to the inner wall of the torsion cylinder, and the other end of the third spring is movably connected to the upper surface of the lifting cylinder.

[0014] Preferably, there are multiple mud guard rings, and the multiple mud guard rings are distributed at equal distances.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The river channel sludge depth measuring device, through the provision of an external mud cylinder, an internal mud cylinder, an anti-deviation wing, a scale, a first side port, a second side port, a mud retaining ring, a mud pumping mechanism, a mud inserting cone, a guide mechanism and an impact mechanism, can utilize the cooperation of the external mud cylinder and the internal mud cylinder to insert the mud inside, utilize the mud pumping mechanism to pump the sludge into the internal mud cylinder, and utilize the mud retaining ring to keep the soil of the corresponding depth at the corresponding position, and then after the device is pulled out, compare the depth of the sludge inside the internal mud cylinder with the scale, so as to obtain the type data of the sludge at the corresponding depth, and thus obtain the depth of the sludge, without the need for an external power supply, and has strong environmental adaptability.

[0017] 2. The river channel sludge depth measuring device, through the provision of an external mud cylinder, an internal mud cylinder and a mud pumping mechanism, can create a relatively low-pressure environment in the space inside the device by continuously and rapidly pumping the mud pumping mechanism after the external mud cylinder and the internal mud cylinder are inserted into the sludge, thereby facilitating the sludge around the device to flow from the first side port and the second side port into the interior of the internal mud cylinder, thereby collecting soil type data at different depths.

[0018] 3. The river sludge depth measuring device, through the provision of an external mud cylinder, an internal mud cylinder, a guide mechanism and an impact mechanism, can utilize the continuous rotation of the guide mechanism to toggle the impact mechanism to continuously hammer and impact the device after the device is inserted into the soil, thereby making it easier to impact the device into the sludge, thereby improving work efficiency and convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the explosion structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the mud cone insertion position of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the impact hammer position of the present invention;

[0023] Figure 5 It is a schematic diagram of the side section structure of the impact mechanism of the present invention;

[0024] Figure 6 This is a schematic diagram of the internal explosion structure of the impact mechanism of the present invention;

[0025] Figure 7 It is a schematic diagram of the internal explosion structure of the guide mechanism of the present invention;

[0026] Figure 8 It is a schematic diagram of the structure of the impact mechanism of the present invention;

[0027] Fig. 9 It is a side sectional view of the impact mechanism of the present invention;

[0028] Fig.10 It is a side sectional view of the mud pumping mechanism of the present invention;

[0029] Fig.11 It is a schematic diagram of the structure at the location of the mounting hole of the present invention.

[0030] In the figure: 1. external mud cylinder; 2. internal mud cylinder; 3. anti-deviation wing; 4. scale; 5. first side opening; 6. second side opening; 7. mud retaining ring; 8. mud pumping mechanism; 801. mounting slide; 802. piston; 803. limit block; 804. mounting hole; 805. one-way valve; 806. traction rope; 807. first spring; 808. pull ring; 9. mud cone; 10. guide mechanism; 1001. torsion cylinder; 1002. guide groove; 1003. third spring; 11. impact mechanism; 1101. lifting cylinder; 1102. impact hammer; 1103. toggle column; 1104. mounting ring; 1105. hammer limit column; 12. toggle rod; 13. extension block; 14. limit hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-11, a river mud depth measuring device comprises: an external mud tube 1 and an internal mud tube 2, the edge of the external mud tube 1 is provided with anti-deviation wings 3, and the number of the anti-deviation wings 3 is two, and both sides of the two anti-deviation wings 3 are provided with inclined surfaces, the outer wall of the external mud tube 1 is provided with a scale 4, the zero scale of the scale 4 is at the top, the two sides of the external mud tube 1 are penetrated with a first side opening 5, the two sides of the internal mud tube 2 are penetrated with a second side opening 6, the inner wall of the second side opening 6 is fixedly connected with a mud retaining ring 7, the top of the internal mud tube 2 is provided with a mud pumping mechanism 8, the end of the internal mud tube 2 away from the mud pumping mechanism 8 is provided with a mud inserting cone 9, and the outer wall of the mud inserting cone 9 is slidably connected with the inner wall of the external mud tube 1, the outer wall of the external mud tube 1 is provided with a guide mechanism 10, the outer wall of the external mud tube 1, the outer wall of the mud pumping mechanism 8 and the outer wall of the guide mechanism 10 are rotatably connected with a toggle rod 12, the external mud tube 1 is provided with an epitaxial block 13 on the outer wall, and limiting holes 14 are provided on both sides of the epitaxial block 13, and the number of the limiting holes 14 is two. An impact mechanism 11 is provided on the top of the epitaxial block 13. The river sludge depth measuring device, through the external mud tube 1, the internal mud tube 2, the anti-deviation wing 3, the scale 4, the first side port 5, the second side port 6, the mud retaining ring 7, the mud pumping mechanism 8, the mud inserting cone 9, the guide mechanism 10 and the impact mechanism 11, can utilize the cooperation of the external mud tube 1 and the internal mud tube 2 to insert the sludge inside, utilize the mud pumping mechanism 8 to pump the sludge into the internal mud tube 2, and utilize the mud retaining ring 7 to keep the soil of the corresponding depth in the corresponding position, and then after the device is extracted, the depth of the sludge in the internal mud tube 2 is compared with the scale 4, so as to obtain the type data of the sludge of the corresponding depth, thereby obtaining the depth of the sludge, without the need for an external power supply, and has strong environmental adaptability.

[0033] The outer wall of the inner plug mud tube 2 is slidably connected to the inner wall of the outer plug mud tube 1, and the shape and size of the first side opening 5 and the shape and size of the second side opening 6 are matched with each other to facilitate the collection of sludge of different depths.

[0034] Among them, the mud pumping mechanism 8 includes an installation slide 801, a piston 802, a limit block 803, a mounting hole 804 and a one-way valve 805. The installation slide 801 is fixedly sleeved on the inner wall of the inner inserted mud tube 2, and the outer wall of the installation slide 801 is rotatably connected to the inner wall of the outer inserted mud tube 1 through a bearing. The piston 802 is slidably connected to the inner wall of the installation slide 801, and the limit block 803 is fixedly sleeved on the inner wall of the installation slide 801, and the limit block 803 is located below the piston 802, and ventilation holes are penetrated on both sides of the limit block 803. The installation hole 804 is penetrated and opened at one end of the piston 802, and the one-way valve 805 is fixedly connected to the inner wall of the installation hole 804. The tube 1, the inner mud tube 2 and the mud pumping mechanism 8 can use the continuous and rapid pumping of the mud pumping mechanism 8 to create a relatively low-pressure environment in the space inside the device after the outer mud tube 1 and the inner mud tube 2 are inserted into the sludge, so as to facilitate the sludge around the device to flow into the inner mud tube 2 from the first side port 5 and the second side port 6, so as to collect the type data of soil at different depths. The one-way valve 805 is a fluid that can only flow along the water inlet, but the medium at the water outlet cannot flow back, commonly known as the one-way valve 805. The one-way valve 805 is also called a check valve or a non-return valve, which is used in hydraulic systems to prevent oil flow from flowing in reverse, or in pneumatic systems to prevent compressed air from flowing in reverse. The one-way valve 805 has two types: straight-through type and right-angle type.

[0035] Among them, the mud pumping mechanism 8 also includes a traction rope 806, a first spring 807 and a pull ring 808. The traction rope 806 is fixedly connected to the side of the piston 802 away from the limit block 803, and the pull ring 808 is fixedly connected to the end of the traction rope 806 away from the piston 802. The first spring 807 is arranged inside the mounting slide 801, and one end of the first spring 807 is movably connected to the top of the piston 802, and the other end of the first spring 807 is movably connected to the inner top wall of the mounting slide 801, and the traction rope 806 is located inside the first spring 807, so as to drive the piston 802 to be frequently pulled and reset.

[0036] Among them; the guide mechanism 10 includes a torsion cylinder 1001, a guide groove 1002 and a third spring 1003, the torsion cylinder 1001 is rotatably connected to the outer wall of the external mud cylinder 1, the guide groove 1002 is embedded in the outer wall of the torsion cylinder 1001, and the guide groove 1002 includes a straight groove and an oblique groove, and the third spring 1003 is movably sleeved on the outer wall of the torsion cylinder 1001 to convert the rotational motion into the lifting and impact motion of the impact mechanism 11.

[0037] Among them; the impact mechanism 11 includes a lifting cylinder 1101, an impact hammer 1102 and a toggle column 1103, the lifting cylinder 1101 is slidably connected to the outer wall of the torsion cylinder 1001, the impact hammer 1102 is fixedly sleeved on the outer wall of the lifting cylinder 1101, the toggle column 1103 is fixedly connected to the inner wall of the lifting cylinder 1101, and the outer wall of the toggle column 1103 is slidably connected to the inner wall of the guide groove 1002. Through the provision of the external mud cylinder 1, the internal mud cylinder 2, the guide mechanism 10 and the impact mechanism 11, after the device is inserted into the soil, the continuous rotation of the guide mechanism 10 can be used to toggle the impact mechanism 11 to continuously hammer and impact the device, thereby making it easier to impact the device into the sludge, thereby improving work efficiency and convenience.

[0038] Among them; the impact mechanism 11 also includes a mounting ring 1104 and a heavy hammer limiting column 1105. The mounting ring 1104 is fixedly sleeved on the outer wall of the torsion cylinder 1001, and the heavy hammer limiting column 1105 is integrally connected to the bottom of the mounting ring 1104 to facilitate limiting the impact mechanism 11, avoiding deflection of the impact mechanism 11, and ensuring that the impact mechanism 11 can slide up and down.

[0039] Among them, the number of the heavy hammer limiting columns 1105 is two, and the two heavy hammer limiting columns 1105 are distributed in parallel, and the outer wall of the heavy hammer limiting column 1105 is slidably connected to the inner wall of the limiting hole 14 to facilitate the sliding and limiting of the impact mechanism 11.

[0040] Among them; one end of the third spring 1003 is movably connected to the inner wall of the torsion cylinder 1001, and the other end of the third spring 1003 is movably connected to the upper surface of the lifting cylinder 1101, so as to store energy and increase the impact force of the impact hammer 1102.

[0041] There are multiple mud guard rings 7, and the multiple mud guard rings 7 are distributed at equal distances.

[0042] Working principle: when in use, the external mud barrel 1 is fixed and the toggle rod 12 is rotated with the assistance of the toggle rod 12 on the surface of the external mud barrel 1 and the toggle rod 12 on the surface of the installation slide 801, so that the toggle rod 12 drives the internal mud barrel 2 to rotate, so that the first side opening 5 and the second side opening 6 are misaligned, so that the outer mud barrel 1 and the inner mud barrel 2 are closed around, and then the device is vertically inserted into the sludge area to be detected. When insertion is difficult, the external mud barrel 1 is pressed by holding the toggle rod 12 on the surface of the external mud barrel 1, and then the toggle rod 12 on the surface of the torsion barrel 1001 is held and rotated to drive the torsion barrel 1001 to rotate. When the torsion barrel 1001 rotates, the toggle column 1103 is toggled through the guide groove 1002. The internal inclined groove of the guide groove 1002 first pushes the toggle column 1103 to rise, and then The lifting cylinder 1101 and the impact hammer 1102 are driven to rise synchronously, and the third spring 1003 is gradually squeezed and contracted until the toggle column 1103 rises to the top of the inclined groove and slides into the straight groove. At this time, the lifting cylinder 1101 and the impact hammer 1102 reach the highest point. At this time, the bottom of the straight groove has no limit on the bottom of the toggle column 1103. The elastic force of the third spring 1003 returning to its original position and the gravity of the impact hammer 1102 itself push the impact hammer 1102 and the lifting cylinder 1101 to hammer downward synchronously and quickly, thereby using the impact force of the collision to knock the device down. At this time, the toggle column 1103 slides to the bottom of the inclined groove again, so as to facilitate rising again and striking again, until the first side port 5 and the second side port 6 are completely immersed in the interior of the sludge and the zero mark of the scale 4 is set. The degree line coincides with the sludge surface, and then the outer mud tube 1 is fixed and the toggle rod 12 is rotated with the assistance of the toggle rod 12 on the surface of the outer mud tube 1 and the toggle rod 12 on the surface of the mounting slide 801, so that the toggle rod 12 drives the inner mud tube 2 to rotate, so that the first side port 5 coincides with the second side port 6, so that the interior of the inner mud tube 2 is connected with the sludge, and then the pull ring 808 is quickly pulled, and the pull ring 808 drives the piston 802 to rise through the traction rope 806. At this time, the one-way valve 805 ensures that the air flows upward in one direction, and the air above the piston 802 is pushed out, and then the pull ring 808 is loosened, and the first spring 807 pushes the piston 802 to reset, and then the pull ring 808 is quickly pulled again, and the pull ring 808 drives the piston 802 to rise through the traction rope 806, thereby continuously Pulling back and forth pumps out the air between the sludge and the bottom space of the piston 802, thereby reducing the pressure between the sludge and the bottom space of the piston 802. Due to the high water content inside the sludge, it has a certain fluidity and can form a certain degree of sealing, so that the sludge of the corresponding depth flows into the interior of the inner mud tube 2, and then is blocked and retained by the mud retaining ring 7 of the corresponding depth. Then, with the assistance of the toggle rod 12 on the surface of the outer mud tube 1 and the toggle rod 12 on the surface of the mounting slide 801, the outer mud tube 1 is fixed and the toggle rod 12 is rotated, so that the toggle rod 12 drives the inner mud tube 2 to rotate, so that the first side port 5 is misaligned with the second side port 6, so that the outer mud tube 1 and the inner mud tube 2 are closed around, and then the device is pulled out from the inside of the sludge. After pulling it out, the inner mud tube 2 is rotated again.Expose the inside of the inserted mud tube 2, then observe the soil type, find the boundary between the sludge and other soil and the corresponding scale of the scale 4, so as to obtain the depth of the sludge.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A river sludge depth measuring device, characterized in that: include: An external mud tube (1) and an internal mud tube (2), wherein the edge of the external mud tube (1) is provided with an anti-deviation wing (3), and the number of the anti-deviation wings (3) is two, and both sides of the two anti-deviation wings (3) are provided with inclined surfaces, the outer wall of the external mud tube (1) is provided with a scale (4), the two sides of the external mud tube (1) are provided with a first side opening (5), the two sides of the internal mud tube (2) are provided with a second side opening (6), the inner wall of the second side opening (6) is fixedly connected with a mud retaining ring (7), the top of the internal mud tube (2) is provided with a mud pumping mechanism (8), and the internal mud tube (2) is away from the mud pumping mechanism A mud inserting cone (9) is provided at one end of the outer wall of the mud inserting cone (9), and the outer wall of the mud inserting cone (9) is slidably connected to the inner wall of the outer mud inserting tube (1); a guide mechanism (10) is provided on the outer wall of the outer mud inserting tube (1); the outer wall of the outer mud inserting tube (1), the outer wall of the mud pumping mechanism (8) and the outer wall of the guide mechanism (10) are all rotatably connected to a toggle rod (12); an epitaxial block (13) is provided on the outer wall of the outer mud inserting tube (1); limiting holes (14) are provided on both sides of the epitaxial block (13), and the number of the limiting holes (14) is two; and an impact mechanism (11) is provided on the top of the epitaxial block (13); The mud pumping mechanism (8) comprises a mounting slide (801), a piston (802), a stop block (803), a mounting hole (804) and a one-way valve (805); the mounting slide (801) is fixedly sleeved on the inner wall of the inner inserted mud cylinder (2), and the outer wall of the mounting slide (801) is rotatably connected to the inner wall of the outer inserted mud cylinder (1) via a bearing; the piston (802) is slidably connected to the inner wall of the mounting slide (801); the stop block (803) is fixedly sleeved on the inner wall of the mounting slide (801), and the stop block (803) is located below the piston (802), and ventilation holes are penetrated on both sides of the stop block (803); the mounting hole (804) is penetrated and opened at one end of the piston (802), and the one-way valve (805) is fixedly connected to the inner wall of the mounting hole (804); The guide mechanism (10) comprises a torsion cylinder (1001), a guide groove (1002) and a third spring (1003); the torsion cylinder (1001) is rotatably connected to the outer wall of the external mud cylinder (1); the guide groove (1002) is embedded in the outer wall of the torsion cylinder (1001); the guide groove (1002) comprises a straight groove and an inclined groove; and the third spring (1003) is movably sleeved on the outer wall of the torsion cylinder (1001); The impact mechanism (11) further comprises a mounting ring (1104) and a heavy hammer limiting column (1105); the mounting ring (1104) is fixedly sleeved on the outer wall of the torsion cylinder (1001); and the heavy hammer limiting column (1105) is integrally connected to the bottom of the mounting ring (1104).

2. A river sludge depth measuring device according to claim 1, characterized in that: The outer wall of the inner inserted mud tube (2) is slidably connected to the inner wall of the outer inserted mud tube (1), and the shape and size of the first side opening (5) and the shape and size of the second side opening (6) match each other.

3. A river sludge depth measuring device according to claim 1, characterized in that: The mud pumping mechanism (8) further comprises a traction rope (806), a first spring (807) and a pull ring (808); the traction rope (806) is fixedly connected to a side of the piston (802) away from the limit block (803); the pull ring (808) is fixedly connected to an end of the traction rope (806) away from the piston (802); the first spring (807) is arranged inside the mounting slide cylinder (801); one end of the first spring (807) is movably connected to the top of the piston (802); the other end of the first spring (807) is movably connected to the inner top wall of the mounting slide cylinder (801); and the traction rope (806) is located inside the first spring (807).

4. A river sludge depth measuring device according to claim 1, characterized in that: The impact mechanism (11) comprises a lifting cylinder (1101), an impact hammer (1102) and a toggle column (1103); the lifting cylinder (1101) is slidably connected to the outer wall of the torsion cylinder (1001); the impact hammer (1102) is fixedly sleeved on the outer wall of the lifting cylinder (1101); the toggle column (1103) is fixedly connected to the inner wall of the lifting cylinder (1101); and the outer wall of the toggle column (1103) is slidably connected to the inner wall of the guide groove (1002).

5. A river sludge depth measuring device according to claim 1, characterized in that: The number of the weight limit columns (1105) is two, and the two weight limit columns (1105) are distributed in parallel, and the outer wall of the weight limit column (1105) is slidably connected to the inner wall of the limit hole (14).

6. A river sludge depth measuring device according to claim 1, characterized in that: One end of the third spring (1003) is movably connected to the inner wall of the torsion cylinder (1001), and the other end of the third spring (1003) is movably connected to the upper surface of the lifting cylinder (1101).

7. A river sludge depth measuring device according to claim 1, characterized in that: The number of the mud guard rings (7) is multiple, and the multiple mud guard rings (7) are distributed at equal distances.

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