Sampling device for deepwater quality detection

Abstract

The utility model discloses a sampling device for deep water quality detection, and belongs to the field of water quality detection. Comprising a sampling pipe, a plurality of partition plates, water inlets and a counterweight mechanism, wherein the partition plates are fixedly connected in the sampling pipe and are used for separating the internal space of the sampling pipe at equal intervals; the water inlets are formed in the sampling pipe and correspond to the partition sections; the counterweight mechanism is fixedly mounted at the bottom of the sampling pipe; a micro peristaltic pump is fixedly mounted in the partition section, corresponding to the topmost end, of the sampling tube, a peristaltic hose is arranged on the micro peristaltic pump, and one end of the peristaltic hose is communicated with the outside of the sampling tube. According to the sampling device for deepwater quality detection, through combined use of the micro peristaltic pump and the non-return mechanism, a water sample can be extracted more quickly, the micro peristaltic pump can actively extract air in the sampling pipe and reduce the internal pressure, so that external water enters the sampling pipe at a speed higher than that of natural standing, and the sampling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of water quality detection, in particular to a sampling device for deep water quality detection. Background Art

[0002] Water quality testing refers to the detection and evaluation of the physical, chemical and biological properties of water bodies to determine whether the water quality is suitable for specific purposes, such as drinking, agricultural irrigation, industrial water or ecological maintenance.

[0003] The Chinese utility model patent with publication number CN219736906U discloses a deep-water sampling device for water quality detection. The sampling device is assembled by a sampling tube and a protective tube connected by coaxial damping, thrown into the river to be detected, and moved downward under the gravity of the counterweight to overcome the buoyancy. After touching the bottom, wait for five minutes, and then pull the traction rope to move the sampling tube upward so that the second water inlet hole and the first water inlet hole are aligned, so that the deep water outside the protective tube can enter the sampling tube along the second water inlet hole and the first water inlet hole. Collect in layers, then loosen the traction rope to allow the sampling tube to drop under the action of gravity, separate the second water inlet hole from the first water inlet hole, keep the sampling tube sealed, and then pull the rope fixed to the upper end of the protective tube to pull up the entire device to complete deep water sampling. However, the entire operation process is cumbersome, and since there is only one hole for water inlet and outlet, water inlet and exhaust must pass through this hole. Therefore, as more water enters the sampling tube, the internal pressure increases, resulting in slow subsequent water inlet or even failure to fill the tube. Sampling can only be completed by standing time, resulting in low sampling efficiency.

[0004] Therefore, a sampling device for deep water quality detection is provided to solve the above problems. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The utility model provides a sampling device for deep water quality detection, aiming to solve the problem of low sampling efficiency caused by cumbersome operation and slow water inlet and outlet of the existing deep water sampling device mentioned in the background technology.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sampling device for deep-water water quality detection, comprising a sampling tube, a plurality of partition plates fixedly connected to the sampling tube for equally dividing the internal space of the sampling tube, a water inlet arranged at the position corresponding to each partition on the sampling tube, and a counterweight mechanism fixedly installed at the bottom of the sampling tube.

[0009] In order to improve the sampling efficiency, a micro peristaltic pump is fixedly installed in the topmost compartment of the sampling tube. The micro peristaltic pump has a peristaltic hose. One end of the peristaltic hose is connected to the outside of the sampling tube, and the other end is connected to each compartment inside the sampling tube.

[0010] A check mechanism is fixedly installed at the end of the water inlet; after the sampling tube sinks into deep water, the peristaltic hose is driven by a micro peristaltic pump to slowly extract the air in each compartment of the sampling tube, thereby reducing the internal pressure and making the external deep water pressure always slightly greater than that inside the sampling tube, so that the external water enters the various compartments of the sampling tube through the water inlet at a faster speed than when it naturally stands still, and is prevented from flowing back by the check mechanism, completing the sampling and thus improving the sampling efficiency.

[0011] Preferably, in order to prevent the backflow of water sucked into the sampling tube, the non-return mechanism includes a valve body connected to the water inlet at the outlet end, a valve core moving axially in the valve body, and a spring connected at both ends to the inner wall of the valve body outlet end and a side of the valve core away from the valve body inlet end respectively; when the sampling water is sucked in, due to the strong external pressure, the valve core moves toward the outlet end of the valve body under the push of water, leaving a passage for water to enter the sampling tube through the water inlet; after the sampling water enters the sampling tube, due to the existence of the non-return mechanism, the pressure of the sampling backflow inside the sampling tube cooperates with the elastic force of the spring to push the valve core to move toward the inlet end of the valve body and press it tightly, thereby closing the inlet end of the valve body to prevent backflow.

[0012] Preferably, in order to facilitate draining of water after sampling, the non-return mechanism is equipped with a drain assembly, which includes a switch valve screwed on the inlet end of the valve body and a push pin fixedly connected to the inside of the switch valve close to one end of the valve body for squeezing the valve core to move toward the water inlet; after the sampling tube is retracted to the shore, when the sample water needs to be taken out, the switch valve is screwed on the inlet end of the valve body, and as the screw connection goes deeper, the valve core is pushed open by the push pin to make way, and the water can be drained by switching the switch valve.

[0013] Preferably, in order to facilitate the traction of the sampling tube, a traction ring is fixedly connected to the side wall of the sampling tube; a rope is connected through the traction ring to facilitate the retrieval of the device and prevent it from being lost.

[0014] Preferably, in order to facilitate the adjustment of the counterweight, the counterweight mechanism includes a base fixedly installed at the bottom end of the sampling tube and a plurality of carabiners fixedly connected to the side of the base and distributed in a circular array; other counterweights are hung by the carabiners, which makes it convenient to adjust the weight of the counterweight according to the water depth, and also facilitates the removal of the counterweight after recovery, thereby facilitating transfer.

[0015] Preferably, in order to improve efficiency and save recovery work and time, a floating mechanism is provided at the top of the sampling tube; the floating mechanism can save pulling force when recovering the sampling tube, and automatic floating also saves recovery time, and the overall sampling efficiency is further improved.

[0016] Preferably, in order to achieve automatic floating of the device, the floating mechanism includes an air tank fixedly installed on the top of the sampling tube, a gas filling port fixedly connected to the side of the air tank and connected to the inside of the air tank, an airbag warehouse fixedly connected to the top of the airbag warehouse, a warehouse cover hinged at the top of the airbag warehouse, an airbag fixedly connected to the airbag warehouse, and an electric control valve fixedly installed in the airbag warehouse and connected to the air tank and the airbag warehouse at both ends respectively; since the airbag is compressed and stored in the airbag warehouse, compressed air is stored in the air tank. After sampling, the air tank and the airbag are connected by opening the electric control valve, so that the compressed air in the air tank is quickly filled into the airbag under pressure, and the airbag is expanded to open the warehouse cover and pop up, and the airbag is used to displace river water to form buoyancy, thereby driving the entire device to float. The airbag will be stored back in the airbag warehouse when used next time, and the air tank can be inflated through the gas filling port.

[0017] (III) Beneficial effects

[0018] The sampling device for deep-water water quality detection can extract water samples faster by combining a micro peristaltic pump and a check mechanism. The micro peristaltic pump can actively extract the air in the sampling tube, reduce the internal pressure, and allow external water to enter the sampling tube at a faster speed than natural standing, thereby improving the sampling efficiency.

[0019] The sampling device for deep water quality detection has a check mechanism, which uses the design of a valve core and a spring. After the water sample enters the sampling tube, the valve core is pressed tightly by the internal pressure and the elastic force of the spring, thereby closing the water inlet and effectively preventing the backflow of the water sample. The design of the water discharge component makes it convenient to control the discharge of the water sample through the switch valve when it is necessary to take out the water sample. The operation is simple and quick, thereby further improving the sampling efficiency.

[0020] The sampling device for deep-water water quality detection can automatically float the device after sampling is completed through the design of the floating mechanism, thereby saving the pulling force and time during recovery and improving the overall sampling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a sampling device for deep water quality detection;

[0022] Figure 2 It is a schematic diagram of the internal structure of a sampling device for deep water quality detection;

[0023] Figure 3 for Figure 2The enlarged structural diagram at A in the middle;

[0024] Figure 4 The present invention is a schematic diagram of the structure of a water discharge component of a sampling device for deep-water water quality detection.

[0025] In the figure:

[0026] 1. Sampling tube; 11. Separator; 12. Water inlet; 13. Micro peristaltic pump; 131. Peristaltic hose; 14. Check mechanism; 141. Valve body; 142. Valve core; 143. Spring; 15. Traction ring;

[0027] 2. Counterweight mechanism; 21. Base; 22. Mountaineering buckle;

[0028] 3. Floating mechanism; 31. Gas storage tank; 311. Gas filling port; 32. Air bag compartment; 321. Compartment cover;

[0029] 33. Airbag; 34. Electric control valve;

[0030] 4. Drain assembly; 41. Switch valve; 411. Ejector pin. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0032] Example 1

[0033] See also Figure 1-Figure 4 The utility model provides a technical solution: a sampling device for deep water quality detection, comprising a sampling tube 1, a plurality of partition plates 11 fixedly connected to the sampling tube 1 for equally dividing the internal space of the sampling tube 1, a water inlet 12 arranged at the position of each partition on the sampling tube 1, and a counterweight mechanism 2 fixedly installed at the bottom of the sampling tube 1.

[0034] A micro peristaltic pump 13 is fixedly installed in the compartment corresponding to the top of the sampling tube 1. The micro peristaltic pump 13 has a peristaltic hose 131. One end of the peristaltic hose 131 is connected to the outside of the sampling tube 1, and the other end is connected to each compartment inside the sampling tube 1.

[0035] A check mechanism 14 is fixedly installed at each end of the water inlet 12;

[0036] When in use, the sampling tube 1 is sunk into deep water using the counterweight mechanism 2. After the sampling tube 1 is sunk into the deep water, the peristaltic hose 131 is driven by the micro peristaltic pump 13 to slowly extract the air in each compartment of the sampling tube 1, thereby reducing the internal pressure and making the external deep water pressure always slightly greater than that inside the sampling tube 1. As a result, the external water enters each compartment of the sampling tube 1 through the water inlet 12 at a faster speed than when it naturally stands still, and is prevented from flowing back by the check mechanism 14, completing the sampling and thus improving the sampling efficiency.

[0037] Specifically, the non-return mechanism 14 includes a valve body 141 whose outlet end is connected to the water inlet 12, a valve core 142 that moves axially in the valve body 141, and a spring 143 whose two ends are respectively connected to the inner wall of the outlet end of the valve body 141 and a side of the valve core 142 away from the inlet end of the valve body 141; when the sampled water is inhaled, due to the strong external pressure, the valve core 142 moves toward the outlet end of the valve body 141 under the push of the water, leaving a passage for the water to enter the sampling tube 1 through the water inlet 12. After the sampled water enters the sampling tube 1, due to the existence of the non-return mechanism 14, the pressure of the sample reflux inside the sampling tube 1 cooperates with the elastic force of the spring 143 to push the valve core 142 to move toward the inlet end of the valve body 141 and press it tightly, thereby closing the inlet end of the valve body 141 to prevent backflow.

[0038] Furthermore, the check mechanism 14 is equipped with a drain assembly 4, which includes a switch valve 41 screwed on the inlet end of the valve body 141 and a push pin 411 fixedly connected to the inside of the switch valve 41 close to the end of the valve body 141 for squeezing the valve core 142 to move toward the water inlet 12; after the sampling tube 1 is retracted to the shore, when the sample water needs to be taken out, the switch valve 41 is screwed on the inlet end of the valve body 141, and as the screw connection goes deeper, the valve core 142 is pushed open by the push pin 411 to make way, and at this time, the switch valve 41 can be switched to drain the water.

[0039] It should be noted that a traction ring 15 is fixedly connected to the side wall of the sampling tube 1; a rope is connected through the traction ring 15 to facilitate the recovery of the device and prevent it from being lost.

[0040] Among them, the counterweight mechanism 2 includes a base 21 fixedly installed at the bottom end of the sampling tube 1 and a plurality of carabiners 22 fixedly connected to the side of the base 21 and distributed in a circular array; other counterweights are hung by the carabiners 22, which makes it convenient to adjust the weight of the counterweight according to the water depth, and also makes it convenient to remove the counterweight after recovery and facilitate transfer.

[0041] Example 2

[0042] Different from Example 1, a floating mechanism 3 is provided at the top of the sampling tube 1; the floating mechanism 3 can save the pulling force when recovering the sampling tube 1, and the automatic floating also saves the recovery time, and the overall sampling efficiency is further improved.

[0043] Specifically, the floating mechanism 3 includes an air storage tank 31 fixedly installed at the top of the sampling tube 1, a gas filling port 311 fixedly connected to the side of the air storage tank 31 and connected to the inside of the air storage tank 31, an air bag compartment 32 fixedly connected to the top of the air storage tank 31, a compartment cover 321 hinged at the top of the air bag compartment 32, an air bag 33 fixedly connected to the air bag compartment 32, and an electric control valve 34 fixedly installed in the air bag compartment 32 and connected to the air storage tank 31 and the air bag compartment 32 at both ends; Compressed air is stored in the air tank 31 in the bag compartment 32. After sampling, the air tank 31 and the air bag 33 are connected by opening the electric control valve 34, so that the compressed air in the air tank 31 is quickly filled into the air bag 33 under the action of pressure, and the air bag 33 is expanded to open the compartment cover 321 and pop out. The air bag 33 is used to displace the river water to form buoyancy, thereby driving the entire device to float. The air bag 33 will be stored back in the air bag compartment 32 when used next time, and the air tank 31 can be inflated through the air filling port 311.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sampling device for deep water quality detection, comprising a sampling tube (1), a plurality of partition plates (11) fixedly connected to the sampling tube (1) for equally partitioning the internal space of the sampling tube (1), a water inlet (12) arranged at the position of each partition on the sampling tube (1), and a counterweight mechanism (2) fixedly installed at the bottom of the sampling tube (1), characterized in that: A micro peristaltic pump (13) is fixedly installed in the compartment corresponding to the top of the sampling tube (1), and the micro peristaltic pump (13) is provided with a peristaltic hose (131), one end of the peristaltic hose (131) is connected to the outside of the sampling tube (1), and the other end is connected to each compartment inside the sampling tube (1); A check mechanism (14) is fixedly mounted on each end of the water inlet (12).

2. A deep water quality detection sampling device according to claim 1, characterized in that: The non-return mechanism (14) comprises a valve body (141) whose outlet end is connected to the water inlet (12), a valve core (142) that moves axially in the valve body (141), and a spring (143) whose two ends are respectively connected to the inner wall of the outlet end of the valve body (141) and a side of the valve core (142) that is away from the inlet end of the valve body (141).

3. A deep water quality detection sampling device according to claim 2, characterized in that: The non-return mechanism (14) is equipped with a water discharge assembly (4), which comprises a switch valve (41) screwed to the inlet end of the valve body (141) and a push pin (411) fixedly connected to the inside of one end of the switch valve (41) close to the valve body (141) and used for squeezing the valve core (142) to move towards the water inlet (12).

4. A sampling device for deep water quality detection according to claim 3, characterized in that: A traction ring (15) is fixedly connected to the side wall of the sampling tube (1).

5. A deep water quality detection sampling device according to claim 4, characterized in that: The counterweight mechanism (2) comprises a base (21) fixedly mounted on the bottom end of the sampling tube (1) and a plurality of carabiners (22) fixedly connected to the side of the base (21) and distributed in a circular array.

6. A sampling device for deep water quality detection according to claim 5, characterized in that: A floating mechanism (3) is provided at the top end of the sampling tube (1).

7. A deep water quality detection sampling device according to claim 6, characterized in that: The floating mechanism (3) comprises an air storage tank (31) fixedly mounted on the top end of the sampling tube (1), an air filling port (311) fixedly connected to the side of the air storage tank (31) and communicating with the interior of the air storage tank (31), an air bag compartment (32) fixedly connected to the top end of the air storage tank (31), a compartment cover (321) hingedly connected to the top end of the air bag compartment (32), an air bag (33) fixedly connected to the air bag compartment (32), and an electric control valve (34) fixedly mounted in the air bag compartment (32) and having two ends respectively communicating with the air storage tank (31) and the air bag compartment (32).

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