Water sample collection equipment capable of simultaneously collecting multiple layers of water samples

Abstract

The invention discloses water sample collection equipment capable of simultaneously collecting multiple layers of water samples, which comprises a sampling shell, a plurality of sampling cylinders are arranged in the sampling shell along the vertical direction, sampling pipes are arranged on the bottom surfaces of the sampling cylinders, and the tail ends of the sampling pipes extend out of the sampling shell; a sealing mechanism is arranged in the sampling cylinder and is used for sealing the sampling pipe; the top of the side wall of the sampling cylinder is communicated with a communicating pipe, the tail end of the communicating pipe extends to the outer side of the sampling shell, and an electromagnetic valve is mounted on the communicating pipe; a plurality of pressure gauges are mounted on the outer wall of the sampling shell, are in one-to-one correspondence with the sampling cylinders, and are used for detecting pressure values in the sampling cylinders; a controller is arranged on each pressure gauge, and the pressure gauges and the electromagnetic valves are electrically connected with the controllers; a lifting lug used for being connected with a traction rope is fixedly arranged at the top end of the sampling shell. According to the invention, sampling work on different water layers can be realized, and a water sample can be prevented from entering the sampling cylinder before reaching a specified sampling depth.

Description

Technical Field

[0001] The present invention relates to the technical field of water sample collection, and in particular to a water sample collection device capable of collecting multiple layers of water samples at the same time. Background Art

[0002] In order to prevent and control water pollution, it is necessary to first test the water source, which requires the collection of water samples.

[0003] However, the existing water sample collection bucket cannot guarantee that the water sample will not enter the collection bucket before reaching the specified collection depth, which reduces the sampling accuracy; and it is impossible to collect multiple layers of water samples at the same time, and can only collect water samples from a certain layer. When it is necessary to collect water samples at different depths, multiple sampling is required, and the work efficiency is low.

[0004] Therefore, it is urgent to provide a water sample collection device that can collect multiple layers of water samples at the same time to solve the shortcomings of the existing water sample collection bucket. Summary of the invention

[0005] The purpose of the present invention is to provide a water sample collecting device which can collect multiple layers of water samples at the same time, so as to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides a water sample collection device that can collect multiple layers of water samples at the same time, including a sampling shell, wherein a plurality of sampling cylinders are arranged inside the sampling shell in a vertical direction, a sampling tube is arranged on the bottom surface of the sampling cylinder, and the end of the sampling tube extends out of the sampling shell; a sealing mechanism is arranged inside the sampling cylinder, and the sealing mechanism is used to seal the sampling tube; a connecting tube is connected to the top of the side wall of the sampling cylinder, and the end of the connecting tube extends to the outside of the sampling shell, and an electromagnetic valve is installed on the connecting tube; a plurality of pressure gauges are installed on the outer wall of the sampling shell, and the pressure gauges are arranged one by one corresponding to the sampling cylinders, and the pressure gauges are used to detect the pressure value in the sampling cylinder; a controller is arranged on each of the plurality of pressure gauges, and the pressure gauges and the electromagnetic valves are electrically connected to the controller; a lifting ear for connecting a traction rope is fixedly arranged on the top of the sampling shell.

[0007] Preferably, the sealing mechanism includes a sealing block, a slide groove is provided at the top of the sealing block, a guide rod is fixedly connected to the inner wall of the top end of the sampling tube, the bottom end of the guide rod is inserted into the slide groove, and a gap is provided between the bottom end of the guide rod and the bottom of the slide groove.

[0008] Preferably, a spring is sleeved on the guide rod, and two ends of the spring are respectively in contact with the blocking block and the sampling tube.

[0009] Preferably, the density of the blocking block is less than the density of water, and the buoyancy of the blocking block in water is not greater than the initial elastic force of the spring.

[0010] Preferably, an annular airbag is fixedly mounted on the bottom of the blocking block, and an air hole is opened on the blocking block in a vertical direction, and the air hole is communicated with the annular airbag.

[0011] Preferably, the outer surface of the annular airbag is provided with a rubber anti-slip layer.

[0012] Preferably, a sleeve is fixedly connected to the middle of the bottom end of the blocking block, a gap is provided between the bottom end of the sleeve and the bottom surface of the sampling tube, and the annular airbag is sleeved on the outside of the sleeve.

[0013] Preferably, a counterweight is fixedly connected to the bottom end of the sampling shell.

[0014] Compared with the prior art, the present invention has the following advantages and technical effects:

[0015] The water sample collection device provided by the present invention can collect multiple layers of water samples at the same time. By presetting different air pressures in the sampling tube, sampling of different water layers can be achieved under the action of a sealing mechanism, and the working efficiency is high. Moreover, under the action of the sealing mechanism, water samples can be prevented from entering the sampling tube before reaching the specified collection depth, which helps to improve the accuracy of sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. 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 paying creative work.

[0017] Figure 1 It is a structural schematic diagram of the water sample collection device of the present invention;

[0018] Figure 2 It is a schematic diagram of the internal structure of the water sample collection device of the present invention;

[0019] In the figure: 1. sampling shell; 2. sampling cylinder; 3. sampling tube; 4. connecting tube; 5. solenoid valve; 6. pressure gauge; 7. lifting ear; 8. sealing block; 9. slide groove; 10. guide rod; 11. spring; 12. annular airbag; 13. air hole; 14. sleeve; 15. counterweight block. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0021] like Figure 1 to Figure 2 As shown, the present invention provides a water sample collection device that can collect multiple layers of water samples at the same time, including a sampling shell 1, wherein a plurality of sampling cylinders 2 are arranged inside the sampling shell 1 in a vertical direction, a sampling tube 3 is arranged on the bottom surface of the sampling cylinder 2, and the end of the sampling tube 3 extends out of the sampling shell 1; a sealing mechanism is arranged inside the sampling cylinder 2, and the sealing mechanism is used to seal the sampling tube 3; a connecting tube 4 is connected to the top of the side wall of the sampling cylinder 2, and the end of the connecting tube 4 extends to the outside of the sampling shell 1, and an electromagnetic valve 5 is installed on the connecting tube 4; a plurality of pressure gauges 6 are installed on the outer wall of the sampling shell 1, and the pressure gauges 6 are arranged one by one corresponding to the sampling cylinder 2, and the pressure gauges 6 are used to detect the pressure value in the sampling cylinder 2; a controller is arranged on each of the plurality of pressure gauges 6, and the pressure gauges 6 and the electromagnetic valve 5 are electrically connected to the controller; a lifting ear 7 for connecting a traction rope is fixedly arranged on the top of the sampling shell 1.

[0022] When the present invention is in use, the sampling tube 3 is sealed by a sealing mechanism, and then air is inflated into the sampling tube 2 through the connecting tube 4. According to the depth of the target water layer, the pressure value in the sampling tube 2 is determined, and the pressure value in the corresponding sampling tube 2 is judged according to the pressure gauge 6 to see whether it meets the requirements. When the pressure value in the sampling tube 2 meets the requirements, the traction rope is fixed to the lifting ear 7, and then the sampling shell 1 is placed in the water. The sampling shell 1 sinks to the bottom of the water under gravity. When the sampling shell 1 reaches the target depth, under the action of the water pressure, the sealing mechanism contacts the sealing of the sampling tube 3. At this time, the pressure value detected by the pressure gauge 6 will change. When the pressure value of the pressure gauge 6 changes, the controller controls the solenoid valve 5 to open, and the air in the sampling tube 2 is discharged through the connecting tube 4, so that the water sample of the target water layer can be collected into the sampling tube 2.

[0023] The present invention presets different air pressures in the sampling tube 2, and can achieve sampling of different water layers under the action of the sealing mechanism, with high working efficiency; and under the action of the sealing mechanism, it can prevent the water sample from entering the sampling tube 2 before reaching the specified collection depth, which helps to improve the accuracy of sampling.

[0024] A further optimized solution is to ensure that the sampling tube 3 is blocked, the sealing mechanism includes a blocking block 8, a slide groove 9 is provided at the top of the blocking block 8, a guide rod 10 is fixedly connected to the inner wall of the top of the sampling tube 2, and the bottom end of the guide rod 10 is inserted in the slide groove 9. To ensure that the sampling tube 3 can normally take in water during sampling, a gap is provided between the bottom end of the guide rod 10 and the bottom of the slide groove 9.

[0025] To further optimize the solution, in order to prevent the blocking block 8 from changing its position during entry into water, which would cause the blocking block 8 to lose its blocking effect, a spring 11 is sleeved on the guide rod 10, and both ends of the spring 11 are respectively in contact with the blocking block 8 and the sampling tube 2.

[0026] A further optimization scheme is to ensure that the setting of the spring 11 does not affect the blocking block 8 from releasing the blockage of the sampling tube 3, so that the device can sample normally after reaching the target water layer. The density of the blocking block 8 is less than the density of water, and the buoyancy of the blocking block 8 in water is not greater than the initial elastic force of the spring 11.

[0027] To further optimize the solution, in order to improve the blocking effect of the blocking block 8 on the sampling tube 3 , an annular airbag 12 is fixedly installed on the bottom of the blocking block 8 , and an air hole 13 is opened in the vertical direction on the blocking block 8 , and the air hole 13 is connected to the annular airbag 12 .

[0028] As a further optimization scheme, in order to avoid the position change of the blocking block 8 caused by the annular airbag 12 when it expands and to ensure the sealing effect of the annular airbag 12 at the same time, a rubber anti-slip layer is provided on the outer surface of the annular airbag 12 .

[0029] A further optimized solution is to limit the expansion direction of the annular airbag 12 , a sleeve 14 is fixedly connected to the middle of the bottom end of the blocking block 8 , a gap is provided between the bottom end of the sleeve 14 and the bottom surface of the sampling tube 2 , and the annular airbag 12 is sleeved on the outside of the sleeve 14 .

[0030] According to a further optimization scheme, in order to reduce the influence of water flow on the sampling housing 1 after the sampling housing 1 enters the water, a counterweight 15 is fixedly connected to the bottom end of the sampling housing 1 .

[0031] The water sample collection device provided by the present invention can collect multiple layers of water samples at the same time, and its working principle is as follows:

[0032] When in use, the spring 11 is used to squeeze the blocking block 8 at the bottom of the sampling tube 2, and the blocking block 8 is used to block the sampling tube 3, and then the sampling tube 2 is inflated through the connecting tube 4. According to the depth of the target water layer, the pressure value in the sampling tube 2 is determined, and the pressure gauge 6 is used to judge whether the corresponding pressure value in the sampling tube 2 meets the requirements. When the pressure value in the sampling tube 2 meets the requirements, the annular air bag 12 at the bottom of the blocking block 8 expands and fits on the bottom surface of the sampling tube 2 to achieve the blocking of the sampling tube 3. Then, the traction rope is fixed to the lifting ear 7, and the sampling shell 1 is put into the water. The sampling shell 1 sinks to the bottom of the water under the gravity of itself and the counterweight block 15. When the sampling shell 1 reaches the target depth, it is under the action of the water pressure. , the annular airbag 12 expands and its volume becomes smaller. In the process of becoming smaller, the annular airbag 12 will suck water from the sampling tube 3 into the sampling cylinder 2. In the process of the volume of the annular airbag 12 becoming smaller, the pressure value in the sampling cylinder 2 will change. At this time, the controller controls the solenoid valve 5 to open, and the air in the sampling cylinder 2 is discharged from the connecting pipe 4 under the pressure of the water. After the pressure in the sampling cylinder 2 becomes smaller, the blocking block 8 begins to float up under the action of the water to overcome the elastic force of the spring 11, and the sampling cylinder 2 is sampled. When the internal and external pressure values ​​of the sampling cylinder 2 are not enough to offset the elastic force of the spring 11, the blocking block 8 blocks the sampling tube 3 again under the action of the spring 11. At this time, the reading of the pressure gauge 6 tends to be stable again, and the controller controls the solenoid valve 5 to close, completing the sampling process.

[0033] The above are only preferred specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A water sample collection device capable of collecting multiple layers of water samples simultaneously, characterized in that: The sampling shell (1) comprises a sampling shell (1), wherein a plurality of sampling cylinders (2) are arranged in a vertical direction inside the sampling shell (1), a sampling tube (3) is arranged on the bottom surface of the sampling tube (2), and the end of the sampling tube (3) extends out of the sampling shell (1); a sealing mechanism is arranged inside the sampling tube (2), and the sealing mechanism is used to seal the sampling tube (3); a connecting tube (4) is connected to the top of the side wall of the sampling tube (2), and the end of the connecting tube (4) extends to the outside of the sampling shell (1). A solenoid valve (5) is installed on the connecting pipe (4); a plurality of pressure gauges (6) are installed on the outer wall of the sampling shell (1), the pressure gauges (6) are arranged in a one-to-one correspondence with the sampling cylinder (2), and the pressure gauges (6) are used to detect the pressure value in the sampling cylinder (2); a controller is arranged on each of the plurality of pressure gauges (6), and the pressure gauges (6) and the solenoid valves (5) are electrically connected to the controller; and a lifting lug (7) for connecting a traction rope is fixedly arranged at the top end of the sampling shell (1).

2. The water sample collection device capable of simultaneously collecting multiple layers of water samples according to claim 1, characterized in that: The sealing mechanism comprises a sealing block (8), a slide groove (9) is provided at the top of the sealing block (8), a guide rod (10) is fixedly connected to the inner wall of the top of the sampling tube (2), the bottom end of the guide rod (10) is inserted into the slide groove (9), and a gap is provided between the bottom end of the guide rod (10) and the bottom of the slide groove (9).

3. The water sample collection device capable of simultaneously collecting multiple layers of water samples according to claim 2, characterized in that: A spring (11) is sleeved on the guide rod (10), and two ends of the spring (11) are respectively in contact with the blocking block (8) and the sampling tube (2).

4. The water sample collection device capable of simultaneously collecting multiple layers of water samples according to claim 3, characterized in that: The density of the blocking block (8) is less than the density of water, and the buoyancy of the blocking block (8) in water is not greater than the initial elastic force of the spring (11).

5. The water sample collection device capable of simultaneously collecting multiple layers of water samples according to claim 2, characterized in that: An annular air bag (12) is fixedly mounted on the bottom of the blocking block (8), and an air hole (13) is provided on the blocking block (8) in a vertical direction, wherein the air hole (13) is in communication with the annular air bag (12).

6. The water sample collection device capable of simultaneously collecting multiple layers of water samples according to claim 5, characterized in that: The outer surface of the annular airbag (12) is provided with a rubber anti-slip layer.

7. The water sample collection device capable of simultaneously collecting multiple layers of water samples according to claim 6, characterized in that: A sleeve (14) is fixedly connected to the middle of the bottom end of the blocking block (8), a gap is provided between the bottom end of the sleeve (14) and the bottom surface of the sampling tube (2), and the annular airbag (12) is sleeved on the outside of the sleeve (14).

8. The water sample collection device capable of collecting multiple layers of water samples simultaneously according to claim 1, characterized in that: A counterweight (15) is fixedly connected to the bottom end of the sampling housing (1).

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