Bottom mud sampler

Abstract

The bottom mud sampler comprises a sampling unit and an upper control unit. The sampling unit comprises a sampling pipe with an open lower end, a plurality of transverse plates are arranged on the peripheral side of the upper part of the sampling pipe in a circumferential array manner, anchors are arranged at the outer ends of the transverse plates, a linear mechanism vertically positioned at the upper part in the sampling pipe is arranged in the sampling pipe, and a pressing plate is arranged at the lower end of an output shaft of the linear mechanism. The upper control unit is arranged at the upper end of the sampling unit and comprises an upper rod fixed at the upper end of the sampling tube, a vertical moving sleeve is in sliding fit with the peripheral side of the upper rod, and an operating rod is arranged on one side surface of the vertical moving sleeve. According to the bottom mud sampler, the collection amount of bottom mud can be adjusted, and the opening is closed before the sampling pipe is in contact with the bottom mud, so that the bottom mud testing accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling in bottom mud pollution detection, in particular to a bottom mud sampler. Background Art

[0002] A sediment sampler is a tool used to obtain sediment samples at the bottom of a water body. By conducting various biological, chemical, and physical tests on the sediment samples, the sediment pollution status at the bottom of a designated water body can be understood.

[0003] The sediment sampler in the prior art has a tubular structure with an opening at the bottom and some openings at the side. After being inserted into the sediment at the bottom of the water, sampling is performed. In actual sampling work, sometimes it is necessary to collect sediment samples of different volumes. However, the current sediment sampler cannot adjust the sampling amount, and multiple different sediment samplers are required to collect sediment samples of different volumes. In addition, when the existing sediment sampler descends in the water, the substances in the upper water body will be brought into the sediment, so that the properties of the sediment sample finally obtained will change, making the test results inaccurate. Utility Model Content

[0004] In view of the above-mentioned defects, the utility model provides a sediment sampler, which can adjust the collection amount of sediment and seal the opening before the sampling tube contacts the sediment, thereby improving the accuracy of sediment testing.

[0005] In order to achieve the purpose of this utility model, the following technologies are proposed:

[0006] A sediment sampler, comprising:

[0007] The sampling unit comprises a sampling tube with an opening at the lower end, a plurality of horizontal plates are arranged in a circumferential array on the outer circumference of the upper part of the sampling tube, an anchor is arranged at the outer end of the horizontal plate, a linear mechanism is arranged vertically at the upper part of the sampling tube, and a pressure plate is arranged at the lower end of the output shaft;

[0008] The upper control unit is arranged at the upper end of the sampling unit, and comprises an upper rod fixed at the upper end of the sampling tube, a vertical moving sleeve is slidably matched on the outer peripheral side of the upper rod, and an operating rod is arranged on one side of the vertical moving sleeve.

[0009] Furthermore, a plurality of chains are provided at the lower part of the outer end of the transverse plate, and anchors are provided at the lower ends of the chains.

[0010] Furthermore, an annular groove is provided on the outer peripheral side of the pressing plate, and a sealing ring is installed in the annular groove.

[0011] Furthermore, a shock absorbing part is provided in the sampling tube, which includes an upper shock absorbing part fixed between the upper end of the linear mechanism and the top wall of the sampling tube, and a plurality of side shock absorbing parts fixed between the inner circumference of the sampling tube and the circumference of the linear mechanism.

[0012] Furthermore, a plurality of ring plates are arranged in the sampling tube, the output shaft of the linear mechanism passes through the ring plates, and the ring plates are fixed to the inner circumference of the sampling tube.

[0013] Furthermore, a top plate is provided at the upper end of the upper rod for receiving hammering.

[0014] Furthermore, a hand-held head is provided at one end of the operating rod.

[0015] The beneficial effects of this technical solution are:

[0016] The linear mechanism arranged in the sampling unit controls the pressure plate. When the sampling unit descends, the opening at the bottom of the sampling tube can be closed first to prevent water above the sediment from entering the sampling tube, thereby improving the accuracy of sediment testing. The height of the pressure plate can also be adjusted to adjust the amount of sediment collected, without the need to use sediment samplers of various specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 An overall stereogram of an embodiment of the present application is shown.

[0018] Figure 2 A three-dimensional diagram of the interior of a sampling unit according to an embodiment of the present application is shown.

[0019] Figure 3 An internal explosion diagram of a sampling unit according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0021] like Figure 1~Figure 3 The bottom sediment sampler shown comprises a sampling unit 1 and an upper control unit 2.

[0022] The sampling unit 1 includes a sampling tube 11 with an opening at the lower end. A plurality of transverse plates 12 are arranged in a circular array on the outer peripheral side of the upper part of the sampling tube 11. A plurality of chains are arranged at the lower part of the outer end of the transverse plate 12. For the convenience of representation, the chain in the drawing is not shown in detail. An anchor 13 is arranged at the lower end of the chain. A controller and a communication module connected to the controller are arranged in the sampling tube 11. For the convenience of representation, the controller and the communication module are not shown in the drawing. A linear mechanism 14 is also arranged in the upper part of the sampling tube 11, which is electrically connected to the controller and vertically arranged. In this embodiment, the linear mechanism 14 adopts a linear hydraulic cylinder, and a pressure plate 15 is arranged at the lower end of its output shaft. An annular groove 16 is provided on the outer peripheral side of the pressure plate 15, and a sealing ring 17 is installed in the annular groove 16. A shock absorbing part 18 and a plurality of annular plates 19 are also provided in the sampling tube 11. The shock absorbing part 18 includes an upper shock absorbing part fixed between the upper end of the linear mechanism 14 and the inner top wall of the sampling tube 11, and a plurality of side shock absorbing parts fixed between the inner peripheral side of the sampling tube 11 and the peripheral side of the linear mechanism 14. The output shaft of the linear mechanism 14 is penetrated by the annular plate 19, and the annular plate 19 is fixed to the inner peripheral side of the sampling tube 11. When the sampling tube 11 is instantly dropped as a whole, if the sealing ring 17 fails to retain all the water, the annular plate 19 can prevent the remaining small amount of water from surging up and contacting the linear mechanism 14.

[0023] The upper control unit 2 is arranged at the upper end of the sampling unit 1, and includes an upper rod 21 fixed to the upper end of the sampling tube 11. In the present embodiment, the cross-section of the upper rod 21 is rectangular. Specifically, when processing the upper rod 21, it is necessary to ensure that the upper rod 21 has a sufficient length so that in each working water body using the bottom sediment sampler, there is always a section of the upper part of the upper rod 21 above the water surface. A top plate 22 is provided at the upper end of the upper rod 21 for receiving hammering so that the sampling tube 11 is hammered into the bottom sediment. During specific work, a hydraulic hammer that can be moved to the top of the top plate 22 can be installed on the work boat, or a long-handled hammer can be used manually to hammer the top plate 22. A vertical moving sleeve 23 is slidably fitted on the outer peripheral side of the upper rod 21, and an operating rod 24 is provided on one side of the vertical moving sleeve 23, and a hand-held head 25 is provided at one end of the operating rod 24.

[0024] Working method:

[0025] As one of the embodiments, the entire sediment sampler can be placed on a boat, and then after reaching a predetermined position, the sampling unit 1 is lowered into the water. After each anchor 13 sinks to the bottom, the bottom end of the sampling tube 11 contacts the top of the sediment. Moreover, before the sediment sampler contacts the bottom of the water, the bottom surface of the pressing plate 15 and the bottom end of the sampling tube 11 are placed on the same horizontal plane through the linear mechanism 14. After the bottom end of the sampling tube 11 contacts the bottom of the water, the linear mechanism 14 is used to make the bottom surface of the pressing plate 15 and the bottom end of the sampling tube 11 have a predetermined distance, so that the sediment sampler can obtain sediment samples at a predetermined distance. In addition, when the sampling unit 1 is lowered, the operating rod 24 can be held, specifically, the handheld head 25 can be held, so that the sampling unit 1 can be lowered more stably in the vertical direction.

[0026] After the sampling unit 1 is ready, the top plate 22 is hammered to insert the sampling tube 11 into the bottom mud to obtain the sample, and then the entire bottom mud sampler is quickly lifted up through the upper control unit 2 to complete the bottom mud sampling.

[0027] The above are only some of the embodiments listed in this application and are not intended to limit this application.

Claims

1. A sediment sampler, characterized in that: include: The sampling unit (1) comprises a sampling tube (11) with an opening at the lower end, a plurality of transverse plates (12) being arranged in a circular array on the outer circumference of the upper portion of the sampling tube (11), an anchor (13) being arranged at the outer end of the transverse plate (12), a linear mechanism (14) being arranged vertically at the upper portion of the sampling tube (11) and a pressing plate (15) being arranged at the lower end of the output shaft thereof; The upper control unit (2) is arranged at the upper end of the sampling unit (1), and comprises an upper rod (21) fixed to the upper end of the sampling tube (11), a vertical moving sleeve (23) slidably engaged with the outer peripheral side of the upper rod (21), and an operating rod (24) is arranged on one side of the vertical moving sleeve (23).

2. The sediment sampler according to claim 1, characterized in that: A plurality of chains are arranged at the lower part of the outer end of the transverse plate (12), and an anchor (13) is arranged at the lower end of the chain.

3. The sediment sampler according to claim 1, characterized in that: An annular groove (16) is formed on the outer peripheral side of the pressing plate (15), and a sealing ring (17) is installed in the annular groove (16).

4. The sediment sampler according to claim 1, characterized in that: A shock absorbing portion (18) is also provided in the sampling tube (11), and the shock absorbing portion (18) comprises an upper shock absorbing portion fixed between the upper end of the linear mechanism (14) and the inner top wall of the sampling tube (11), and a plurality of side shock absorbing portions fixed between the inner peripheral side of the sampling tube (11) and the peripheral side of the linear mechanism (14).

5. The sediment sampler according to claim 1, characterized in that: A plurality of ring plates (19) are also arranged in the sampling tube (11); the output shaft of the linear mechanism (14) passes through the ring plates (19); and the ring plates (19) are fixed to the inner circumference of the sampling tube (11).

6. The sediment sampler according to claim 1, characterized in that: A top plate (22) is provided at the upper end of the upper rod (21) for receiving hammering.

7. The sediment sampler according to claim 1, characterized in that: A hand-held head (25) is provided at one end of the operating rod (24).

Images