Lake bottom sludge sampler

Abstract

The utility model discloses a lake bottom sludge sampler, and relates to the technical field of environment monitoring. The sludge sampling device structurally comprises a sludge sampling cylinder, a connecting terminal and a plurality of sampling operation rods, the sludge sampling cylinder comprises a sampling cylinder, an outer protection cylinder and a blocking valve plate hinged to the lower end part in the sampling cylinder; the sampling cylinder is sleeved with the outer protective cylinder in a sliding manner; the connecting terminal is in threaded connection with the upper end of the sampling cylinder; and the upper end of the connecting terminal is in threaded connection with a plurality of sampling operation rods. Through the combination of the sludge sampling cylinder, the connecting terminal, the sampling operation rod and the air bag, the collected sludge can be completely taken out from the bottom of a lake, the sludge in the sampling cylinder is taken out and stored in different depths through the rectangular window, subsequent analysis and research are facilitated, the buoyancy of the air bag in water can offset the gravity of the sampler part, and the sampling efficiency is improved. And the two horizontal battens are fixed on the peripheral side surface of the gland in an axial symmetry manner, so that the sampling cylinder can be conveniently sensed to completely enter the sludge.

Description

Technical Field

[0001] The utility model belongs to the technical field of environmental monitoring devices, in particular to a lake bottom sludge sampler. Background Art

[0002] As important freshwater resources, lake water quality is directly linked to the ecological environment and human health. Lake sediments are a crucial component of lake ecosystems, documenting historical changes, pollution status, and ecological dynamics. Therefore, sampling, monitoring, and analyzing lake sediments are crucial for understanding the current state of lake water quality and predicting future trends.

[0003] However, traditional lakebed silt sampling methods have many shortcomings. First, traditional samplers are prone to silt leakage during the sampling process, resulting in incomplete or contaminated samples. Second, when operating in deep water areas, traditional samplers are difficult to operate due to the heavy weight of the equipment, and it is difficult to ensure the accuracy and efficiency of sampling. In addition, traditional samplers are often unable to achieve sampling at different depths, which limits the comprehensive understanding of water quality conditions at different depths of the lake.

[0004] In response to the above problems, the utility model provides a lake bottom silt sampler, which aims to solve the problems of silt leakage, difficult operation, and inability to sample at different depths existing in traditional samplers. Utility Model Content

[0005] The purpose of the utility model is to provide a lake bottom silt sampler, which can effectively improve the efficiency, accuracy and safety of sampling while reducing the difficulty of operation through the combination of a silt sampling tube, a connecting terminal, a sampling operating rod and an air bag.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The utility model is a lake bottom silt sampler, comprising a silt sampling cylinder, a connecting terminal and a plurality of sampling operating rods; the silt sampling cylinder comprises a sampling cylinder, an outer protective cylinder and a blocking valve plate hingedly mounted on the lower end of the sampling cylinder; the outer protective cylinder is slidably sleeved on the sampling cylinder; the connecting terminal is threadedly connected to the upper end of the sampling cylinder; a plurality of sampling operating rods are threadedly connected to the upper end of the connecting terminal, and two adjacent sampling operating rods are threadedly connected; a rectangular window arranged along its axial direction is provided on the outer wall of the sampling cylinder; a limiting retaining ring is provided on the outer wall of the sampling cylinder near its lower end, and the distance between the limiting retaining ring and the upper end of the sampling cylinder is the same as the length of the outer protective cylinder; the blocking valve plate is a quarter-pointed cone structure, and the two feet at the lower end of the blocking valve plate are respectively set as rounded corners; a limiting rod is provided on the outer arc surface of the upper end of the blocking valve plate.

[0008] As an optimal technical solution of the present invention, the connecting terminal includes an external threaded joint; a coaxially arranged pressure cap is fixed to the upper end of the external threaded joint, and the outer diameter of the pressure cap is the same as the outer diameter of the outer protective cylinder; an exhaust hole is commonly provided on the external threaded joint and the pressure cap; a coaxially arranged first stud joint is fixed to the top surface of the pressure cap.

[0009] As a preferred technical solution of the present invention, the sampling operation rod includes a cylindrical rod body; a second stud joint is fixed to one end of the cylindrical rod body; and a threaded hole is provided at the other end of the cylindrical rod body for threaded connection with the second stud joint.

[0010] As a preferred technical solution of the present invention, a plurality of anti-slip sleeves are fixedly mounted on the outer wall of the cylindrical rod.

[0011] As a preferred technical solution of the present invention, two horizontal strips are fixed axially symmetrically on the peripheral side of the gland.

[0012] As a preferred technical solution of the utility model, it also includes an airbag; a round hole is opened at the end of the horizontal slat; a tether is tied to the airbag; the free end of the tether passes through the round hole and is tied to the horizontal slat.

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

[0014] 1. The design of the blocking valve plate in the silt sampling cylinder used for collecting silt in this utility model is such that when silt enters the lower end of the sampling cylinder, the blocking valve plate is pushed upward by the influx of silt and unfolds, facilitating the entry of silt. When the silt is collected and withdrawn upward, the silt drives the blocking valve plate downward. The four blocking valve plates effectively seal the lower end of the sampling cylinder, preventing silt from leaking out of the sampling cylinder when the sampler is lifted, ensuring that the collected silt can be removed from the lake bottom intact.

[0015] 2. The outer wall of the sampling cylinder of the utility model is provided with a rectangular window arranged along its axial direction, so that after the lake bottom silt sampler completes sampling, the outer protective cylinder of the sampling cylinder jacket can be removed by rotating the lower connecting terminal, and the silt in the sampling cylinder can be taken out and stored at different depths through the rectangular window, which is convenient for subsequent analysis and research.

[0016] 3. The threaded connection between the connecting terminal and the multiple sampling operating rods allows the operator to adjust the length as needed to accommodate lakes of varying depths. Furthermore, the anti-slip sleeve eliminates the difficulty of gripping the cylindrical rod after it becomes wet, improving operational convenience and safety.

[0017] 4. To reduce the burden of excessive weight on the sampling device when operating in deep waters, this utility model incorporates an airbag. The buoyancy of the airbag in water offsets the gravity of the sampler, reducing the difficulty of sampling lakebed silt. This design is particularly important when sampling in deep waters.

[0018] 5. To facilitate sensing when the sampling cylinder has fully entered the silt, the utility model has two horizontal slats symmetrically fixed to the side of the gland. When the sampling cylinder is fully immersed in the silt, the operator can determine whether the sampling cylinder has fully entered the silt by sensing the change in position of the horizontal slats, thereby improving sampling accuracy and efficiency.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a structural diagram of the lake bottom silt sampler of the utility model.

[0022] Figure 2 This is a structural diagram of the blocking valve plate when it is expanded in the sampling cylinder.

[0023] Figure 3 This is a structural diagram of the blocking valve plate when it is closed in the sampling cylinder.

[0024] Figure 4 Schematic diagram of the structure of the blocking valve plate.

[0025] Figure 5 Schematic diagram of the structure of the sampling operating rod.

[0026] Figure 6 A schematic diagram of the structure of the connection terminals.

[0027] Figure 7 This is a structural diagram of Example 2.

[0028] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0029] 1- silt sampling cylinder, 2- connecting terminal, 3- sampling operating rod, 4- tether, 5- air bag, 11- sampling cylinder, 12- outer protective cylinder, 13- blocking valve plate, 111- rectangular window, 112- limiting retaining ring, 131- limiting rod, 21- external threaded joint, 22- pressure cover, 23- exhaust hole, 24- first stud joint, 25- horizontal slat, 26- round hole, 31- cylindrical rod body, 32- second stud joint, 33- threaded hole, 34- anti-slip sleeve. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention. Specific embodiment one:

[0032] See also Figure 1-6 As shown, the utility model is a lake bottom silt sampler, comprising a silt sampling cylinder 1, a connecting terminal 2 and a plurality of sampling operating rods 3. The silt sampling cylinder 1 comprises a sampling cylinder 11, an outer protective cylinder 12 and a blocking valve plate 13 hingedly mounted on the lower end of the sampling cylinder 11. The outer protective cylinder 12 is slidably sleeved on the sampling cylinder 11. The connecting terminal 2 is threadedly connected to the upper end of the sampling cylinder 11. A plurality of sampling operating rods 3 are threadedly connected to the upper end of the connecting terminal 2, and two adjacent sampling operating rods 3 are threadedly connected. A rectangular window 111 arranged along its axial direction is provided on the outer wall of the sampling cylinder 11. A limit retaining ring 112 is provided on the outer wall of the sampling cylinder 11 near its lower end, and the distance between the limit retaining ring 112 and the upper end of the sampling cylinder 11 is the same as the length of the outer protective cylinder 12.

[0033] The blocking valve plate 13 is a quarter-pointed cone structure, and the two feet at the lower end of the blocking valve plate 13 are respectively set with rounded corners. The outer arc surface of the upper end of the blocking valve plate 13 is provided with a limit rod 131. The limit rod 131 is used to prevent the blocking valve plate 13 from turning over too much.

[0034] When the silt sampling tube 1 is used to sample the silt, when the lower end of the sampling cylinder 11 enters the silt, the blocking valve plate 13 is pushed upward by the inflowing silt and unfolds. Figure 2 When the silt is collected and pumped upward, the silt drives the blocking valve plate 13 downward to flip downward. The four blocking valve plates 13 effectively block the lower end of the sampling cylinder 11, preventing the silt from leaking out of the sampling cylinder 11 when the sampler is lifted up, effectively ensuring that the silt sampling cylinder 1 can bring the collected silt out from the lake bottom.

[0035] After the lake bottom silt sampler completes sampling, the outer protective cylinder 12 of the sampling cylinder 11 can be removed by rotating the lower connecting terminal 2 to remove the outer protective cylinder 12 of the sampling cylinder 11 so that the silt in the sampling cylinder 11 can be taken out and stored according to depth through the rectangular window 111 .

[0036] The connecting terminal 2 includes an externally threaded connector 21. A coaxially mounted gland 22 is secured to the upper end of the externally threaded connector 21. The gland 22 has the same outer diameter as the outer protective cylinder 12. Both the externally threaded connector 21 and the gland 22 have a vent 23. A coaxially mounted first stud connector 24 is secured to the top surface of the gland 22.

[0037] The sampling operating rod 3 includes a cylindrical rod body 31. A second stud joint 32 is fixed to one end of the cylindrical rod body 31. The other end of the cylindrical rod body 31 defines a threaded hole 33 that is threadedly connected to the second stud joint 32. The threaded hole 33 is threadedly connected to the first stud joint 24.

[0038] In order to solve the problem that the cylindrical rod 31 is difficult to hold after getting wet, a plurality of anti-slip sleeves 34 are fixedly mounted on the outer wall of the cylindrical rod 31 .

[0039] In order to facilitate the detection of whether the sampling cylinder 11 has completely entered the silt, two horizontal strips 25 are fixed axially symmetrically on the circumferential side of the pressure cover 22. Specific embodiment two:

[0041] Based on the first specific embodiment, the difference of this embodiment is that:

[0042] like Figure 6-7 As shown, to reduce the risk of excessive weight on the sampling device during deep-water operations, an airbag 5 is provided. A circular hole 26 is provided at the end of a horizontal slat 25. A tether 4 is attached to the airbag 5. The free end of the tether 4 passes through the circular hole 26 and is attached to the horizontal slat 25. The buoyancy of the airbag 5 in the water offsets the weight of the sampler, simplifying the operation of lake bottom mud sampling.

[0043] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0044] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A lake bottom mud sampler, characterized by: It comprises a sludge sampling tube (1), a connecting terminal (2), and a plurality of sampling operating rods (3); The sludge sampling cylinder (1) comprises a sampling cylinder (11), an outer protective cylinder (12), and a blocking valve plate (13) hingedly mounted on the lower end of the sampling cylinder (11); the outer protective cylinder (12) is slidably mounted on the sampling cylinder (11); The connecting terminal (2) is threadedly connected to the upper end of the sampling cylinder (11); the upper end of the connecting terminal (2) is threadedly connected to a plurality of the sampling operating rods (3), and two adjacent sampling operating rods (3) are threadedly connected; The outer wall of the sampling cylinder (11) is provided with a rectangular window (111) arranged along its axial direction; a limit retaining ring (112) is provided on the outer wall of the sampling cylinder (11) near its lower end, and the distance between the limit retaining ring (112) and the upper end of the sampling cylinder (11) is the same as the length of the outer protective cylinder (12); The blocking valve plate (13) is a quarter-pointed cone structure, and the two feet at the lower end of the blocking valve plate (13) are respectively arranged as rounded corners; and a limiting rod (131) is provided on the outer arc surface of the upper end of the blocking valve plate (13).

2. The lake bottom mud sampler according to claim 1, characterized in that: The connecting terminal (2) comprises an external threaded joint (21); a coaxially arranged pressure cap (22) is fixed to the upper end of the external threaded joint (21), and the outer diameter of the pressure cap (22) is the same as the outer diameter of the outer protective cylinder (12); an exhaust hole (23) is provided on both the external threaded joint (21) and the pressure cap (22); and a coaxially arranged first stud joint (24) is fixed to the top surface of the pressure cap (22).

3. The lake bottom mud sampler according to claim 2, characterized in that: The sampling operation rod (3) comprises a cylindrical rod body (31); a second stud joint (32) is fixed to one end of the cylindrical rod body (31); and a threaded hole (33) is provided at the other end of the cylindrical rod body (31) for threaded connection with the second stud joint (32).

4. The lake bottom mud sampler according to claim 3, characterized in that: A plurality of anti-slip sleeves (34) are fixedly mounted on the outer wall of the cylindrical rod body (31).

5. The lake bottom mud sampler according to claim 4, characterized in that: Two horizontal strips (25) are fixed axially symmetrically on the circumferential side of the pressure cover (22).

6. The lake bottom mud sampler according to claim 5, characterized in that: It also includes an air bag (5); a circular hole (26) is opened at the end of the horizontal slat (25); a tether (4) is tied to the air bag (5); and the free end of the tether (4) passes through the circular hole (26) and is tied to the horizontal slat (25).

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