A sampling device for detecting ocean water and a method of using the same

Abstract

The present invention discloses a sampling device for marine seawater detection and a method for using the same. The seawater sampling device comprises a seawater sampler, wherein a sampling water inlet is provided in the seawater sampler so as to pass through the seawater sampler from top to bottom, a filter sheet for filtering is provided at the upper end of the sampling water inlet, a slide is provided across the sampling water inlet and located in the seawater sampler, a negative pressure cavity is provided at the left end of the slide, an opening groove opening to the right is provided at the right end of the slide, a blocking block which can block the sampling water inlet is slidably provided in the slide, and a connecting port which can communicate with the sampling water inlet is provided in the blocking block so as to pass through the blocking block from top to bottom, the blocking block blocks the negative pressure cavity to form a closed space, and the present example aims to design a simple sampling device and a method for using the same which can facilitate seawater sampling in the deep ocean.

Description

Technical Field

[0001] The present invention relates to the technical field of ocean seawater sampling, and in particular to a sampling device for ocean seawater detection and a use method thereof. Background Art

[0002] Generally, sampling is carried out during the marine survey. There are three basic methods: large-scale observation, cross-sectional observation and continuous observation. Large-scale observation is to set up several sampling points in the surveyed sea area and take samples at the same time within a certain period of time. Cross-sectional observation is to set up several representative cross-sections in the surveyed sea area, set up several sampling points on the cross-sections, and take samples at each point within a certain period of time. Continuous observation is to set up representative stations in the surveyed sea area. Regardless of the method, the sampling points should be marked on the nautical chart in advance and corrected during the sampling process. The level of observation should be determined according to the water depth of the surveyed sea area, the vertical change of water quality and the purpose of the survey. The general principle is: denser in the shallow layer and sparser in the deep layer; denser in the case of large changes in water quality and sparser in the case of small changes. The standard observation levels (in meters) proposed by the International Association of Physical Oceanography (IAPO) in 1936 are: 0, 10, 20, 30, 50, 75, 100, 150, 200, (250), 300, 400, 500, 600, (700), 800, 1000, 1200, 1500, 2000, 2500, 3000, 4000, and one more level for every kilometer below. The sampling levels in brackets can be selected at your discretion.

[0003] By testing the sampled seawater, the research institute can analyze the pollution of seawater at different depths in the regional ocean, which is of great significance to my country's marine research. In the seawater sampling operation, the sampling of shallow seawater is relatively simple, and it can be directly extracted. However, for deep seawater, the influence of internal ocean currents can easily cause the position of the seawater sampler to shift. Therefore, the specific depth of the sampler's sinking cannot be judged by the length of the released traction rope. It must be determined by positioning calculation, and the operation process is relatively complicated. Therefore, this example aims to design a simple sampling device and method of use that can be convenient for sampling seawater in the deep ocean. Summary of the invention

[0004] In order to solve the above problems, this example designs a sampling device for marine seawater detection and a method of using the same, wherein the seawater sampling device includes a seawater sampler, wherein a sampling water inlet is provided in the seawater sampler so as to pass through the seawater sampler from top to bottom, wherein a filter sheet for filtering is provided at the upper end of the sampling water inlet, wherein a slide groove is provided across the sampling water inlet and located in the seawater sampler, wherein a negative pressure cavity is provided at the left end of the slide groove, and an opening groove opening to the right is provided at the right end of the slide groove, wherein a blocking block which can block the sampling water inlet is slidably provided in the slide groove, and a connecting port which can communicate with the sampling water inlet is provided in the blocking block so as to pass through the blocking block from top to bottom, wherein the blocking block blocks the negative pressure cavity to form a closed cavity. The left end of the blocking block is provided with a sliding sleeve groove which opens to the left, and a pressure regulating rotating column is slidably provided in the sliding sleeve groove, and the left end of the pressure regulating rotating column extends through the negative pressure chamber and extends out of the left end surface of the seawater sampler, and a pressure regulating push block which is threadedly connected to the pressure regulating rotating column is slidably provided in the negative pressure chamber, and a pressure regulating spring is fixedly connected between the right end surface of the pressure regulating push block and the left end surface of the blocking block, and a pressure sensor is fixedly provided at the connection between the right end of the pressure regulating spring and the blocking block, and the pressure difference between the inside and outside of the open groove is adjusted by adjusting the compression range of the pressure regulating spring;

[0005] The lower end surface of the seawater sampler is provided with an annular bayonet opening downward, and a sampling tube whose upper end is bayoneted in the bayonet and is used to store sampled seawater is clamped in the seawater sampler;

[0006] The specific principle of use is that the pressure difference formed between the open groove and the negative pressure chamber at a certain ocean depth is sufficient to push the connecting port to connect the sampling water port to facilitate seawater sampling at this depth, and after collecting appropriate water, the sampling water port is closed again for recovery.

[0007] Preferably: a three-quarter annular pressure relief ring is provided at the lower side of the slide groove and in the seawater sampler, the front end of the pressure relief ring is connected to the outside through a pressure relief connection port, and is connected to the interior of the chamber of the sampling tube when the sampling tube is sleeved in the bayonet, the end of the pressure relief ring is connected to a pressure matching groove, a pressure relief port is provided between the pressure relief ring and the negative pressure chamber, and a pressure relief blocking block that can isolate the lower end of the pressure relief port is slidably provided in the pressure relief ring;

[0008] The specific usage principle is that after the sampling water inlet is connected, the external seawater is squeezed into the sampling test tube through the sampling water inlet and the connecting port under the action of pressure for sampling. During the sampling process, the pressure in the sampling test tube increases. At this time, the increased pressure in the pressure relief ring and the connecting section of the sampling test tube pushes the pressure relief blocking block to move toward the side with lower pressure, and exposes the pressure relief port, so that the water pressure in the sampling test tube is squeezed into the negative pressure chamber, thereby balancing the pressure between the negative pressure chamber and the opening groove, and then using the elastic force of the pressure regulating spring to push the blocking block to the right and isolate the sampling water inlet again.

[0009] Preferably: a binding plastic sleeve is fixedly provided on the lower end face of the seawater sampler, and the binding plastic sleeve can bind and hold the front and back sides, the right side and the lower end of the sampling tube so as to maintain the connection with the seawater sampler; a traction ring is fixedly connected to the lower end of the binding plastic sleeve, and a circular ring is provided on the traction ring, and a traction rope is bound on the circular ring, and the seawater sampler and the sampling tube can be recovered and released by releasing the traction rope.

[0010] Preferably: a guide column is fixedly provided on the lower end surface of the seawater sampler, a guide tube whose upper end is connected to the water outlet end of the sampling water outlet is provided in the guide column, a drain device is fixedly connected to the lower end of the guide column, a drain port opening upward at a forty-five degree angle is provided in the drain device, the water outlet end of the guide tube is connected to the water inlet end of the drain port, and the drain port and the guide tube are used to reduce the impact of water on the inner wall of the sampling test tube when the water enters when the seawater depth is large.

[0011] Preferably, the binding plastic sleeve is made of elastic plastic and has a telescopic property, thereby facilitating the removal or installation of the sampling tube.

[0012] Preferably, a pressure relief valve is arranged inside the inner wall at the rear side of the negative pressure chamber, and the pressure difference between the negative pressure chamber and the outside is adjusted by the pressure relief valve during use.

[0013] Preferably, a counterweight block is arranged in the seawater sampler, and the counterweight block is used to increase the weight of the seawater sampler and the sampling tube as a whole, thereby facilitating sinking into the water.

[0014] Beneficial effects: When in use, the device is directly thrown into the ocean. As the sinking depth increases, the external pressure on the device gradually increases. When the preset pressure is reached, it can be determined that the predetermined depth has been reached, and the device then automatically takes samples. The device has a simple structure and is easy to operate, with a low cost of use, and is worth recommending. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] For ease of explanation, the present invention is described in detail with reference to the following specific embodiments and accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of a sampling device for detecting ocean water according to the present invention;

[0017] Figure 2 for Figure 1 Schematic diagram of some structures in ;

[0018] Figure 3 for Figure 1 Schematic diagram of the structure in the "AA" direction;

[0019] Figure 4 for Figure 1 Schematic diagram of the structure in the "BB" direction;

[0020] Figure 5 for Figure 1 Structural diagram of the "CC" direction;

[0021] Figure 6 It is a structural diagram of the binding plastic sleeve;

[0022] Figure 7 This is a structural schematic diagram of the drainage outlet. DETAILED DESCRIPTION

[0023] Combine the following Figures 1 to 7 The present invention is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front and back directions mentioned below are Figure 1 The up-down, left-right, front-back directions of the projection relationship itself are consistent.

[0024] The present invention relates to a sampling device for detecting ocean water and a method for using the same. The present invention will be further described below in conjunction with the accompanying drawings of the present invention:

[0025] The present invention discloses a sampling device for detecting ocean water and a method for using the same, as shown in the attached drawings. Figure 1 -Attached Figure 7The seawater sampling device shown in the figure comprises a seawater sampler 101, a sampling water inlet 115 is provided in the seawater sampler 101 and runs through it from top to bottom, a filter sheet 102 for filtering is provided at the upper end of the sampling water inlet 115, a slide 117 is provided across the sampling water inlet 115 and located in the seawater sampler 101, a negative pressure chamber 112 is provided at the left end of the slide 117, an opening groove 121 opening to the right is provided at the right end of the slide 117, a blocking block 118 that can block the sampling water inlet 115 is slidably provided in the slide 117, and a connecting port 116 that can communicate with the sampling water inlet 115 is provided in the blocking block 118 and runs through it from top to bottom, the blocking block 118 blocks the negative pressure chamber 112 to form a closed space, and the blocking block 118 The right end is fixedly connected with a pressure push plate 119 which can slide in the open groove 121, and the left end of the blocking block 118 is provided with a sliding sleeve groove 114 which opens to the left, and a pressure regulating rotating column 111 is slidably provided in the sliding sleeve groove 114, and the left end of the pressure regulating rotating column 111 extends through the negative pressure chamber 112 and extends out of the left end surface of the seawater sampler 101, and a pressure regulating push block 113 which is threadedly connected with the pressure regulating rotating column 111 is slidably provided in the negative pressure chamber 112, and a pressure regulating spring 131 is fixedly connected between the right end surface of the pressure regulating push block 113 and the left end surface of the blocking block 118, and the pressure sensor 151 is fixedly provided at the connection between the right end of the pressure regulating spring 131 and the blocking block 118, and the pressure difference between the inside and outside of the open groove 121 is adjusted by adjusting the compression range of the pressure regulating spring 131;

[0026] The lower end surface of the seawater sampler 101 is provided with an annular bayonet 122 opening downward, and a sampling test tube 104 is bayoneted in the seawater sampler 101, the upper end of which is bayoneted in the bayonet 122 and is used to store sampled seawater;

[0027] The specific principle of use is that the pressure difference formed between the open groove 121 and the negative pressure chamber 112 at a certain ocean depth is sufficient to push the connecting port 116 to connect the sampling water port 115 to facilitate seawater sampling at this depth, and after collecting appropriate water, the sampling water port 115 is closed again for recovery.

[0028] As attached Figure 1 -Attached Figure 5As shown, a three-quarter annular pressure relief ring 123 is provided at the lower side of the slide groove 117 and in the seawater sampler 101. The front end of the pressure relief ring 123 is connected to the outside through a pressure relief connection port 125, and is connected to the interior of the chamber of the sampling tube 104 when the sampling tube 104 is sleeved in the bayonet 122. The end of the pressure relief ring 123 is connected to a pressure matching groove 134. The pressure relief port 124 is provided between the pressure relief ring 123 and the negative pressure chamber 112. A pressure relief blocking block 135 that can block the lower end of the pressure relief port 124 is slidably provided in the pressure relief ring 123.

[0029] The specific principle of use is that after the sampling water inlet 115 is connected, the external seawater is squeezed into the sampling test tube 104 through the sampling water inlet 115 and the connecting port 116 under the action of pressure for sampling. During the sampling process, the pressure in the sampling test tube 104 increases. At this time, the increased pressure in the pressure relief ring 123 and the connecting section of the sampling test tube 104 pushes the pressure relief blocking block 135 to move toward the side with lower pressure, and exposes the pressure relief port 124, thereby squeezing the water pressure in the sampling test tube 104 into the negative pressure chamber 112, thereby balancing the pressure between the negative pressure chamber 112 and the opening groove 121, and then pushing the blocking block 118 to the right with the help of the elastic force of the pressure regulating spring 131 to isolate the sampling water inlet 115 again.

[0030] As attached Figure 1 , Attachment Figure 6 And attached Figure 7 As shown, a binding plastic sleeve 103 is fixedly provided on the lower end face of the seawater sampler 101, and the binding plastic sleeve 103 can bind and hold the front and rear sides, right side and lower end of the sampling tube 104 to maintain the connection relationship with the seawater sampler 101. A traction ring 105 is fixedly connected to the lower end of the binding plastic sleeve 103, and a circular ring is provided on the traction ring 105, and a traction rope is bound on the circular ring. The seawater sampler 101 and the sampling tube 104 can be recovered and released by releasing the traction rope.

[0031] As attached Figure 1 , Attachment Figure 6 And attached Figure 7As shown, a guide column 106 is fixedly provided on the lower end surface of the seawater sampler 101, and a guide tube 107 whose upper end is connected to the water outlet end of the sampling water outlet 115 is provided in the guide column 106, and a drain device 108 is fixedly connected to the lower end of the guide column 106, and a drain port 109 opening upward at a forty-five degree direction is provided in the drain device 108, and the water outlet end of the guide tube 107 is connected to the water inlet end of the drain port 109, and the drain port 109 and the guide tube 107 are used to reduce the impact of water on the inner wall of the sampling test tube 104 when the water enters when the seawater depth is large.

[0032] Advantageously, the binding plastic sleeve 103 is made of elastic plastic and has a telescopic property, thereby facilitating the removal or installation of the sampling tube 104 .

[0033] Advantageously, a pressure relief valve is disposed on the inner wall at the rear side of the negative pressure chamber 112 , and the pressure difference between the negative pressure chamber 112 and the outside is adjusted by the pressure relief valve during use.

[0034] Advantageously, a counterweight is provided inside the seawater sampler 101, and the counterweight is used to increase the overall weight of the seawater sampler 101 and the sampling tube 104, thereby facilitating sinking into the water.

[0035] In the initial state, the blocking block 118 moves to the right to the maximum extent in the slide groove 117. At this time, the blocking block 118 isolates the sampling water inlet 115, and the pressure relief blocking block 135 is located in the pressure relief ring 123 and isolates the pressure relief port 124 from the pressure relief ring 123. At this time, the negative pressure chamber 112 is balanced with the external air pressure, the pressure matching groove 134 and the section of the pressure relief ring 123 connected to the pressure matching groove 134 are balanced with the external air pressure, and the pressure inside the sampling test tube 104 and the section of the pressure relief ring 123 connected to the sampling test tube 104 are balanced with the external air pressure.

[0036] When in use, the traction rope is tied to the traction ring 105, and the pressure-adjusting push block 113 is driven to move to the right by rotating the pressure-adjusting rotating column 111, thereby compressing the pressure-adjusting spring 131, so as to adjust the pressure difference between the left and right sides of the blocking block 118 and read the data through the pressure sensor 151, and put the seawater sampling device into the sea. At this time, it sinks rapidly under the weight of the counterweight block and the seawater sampling device itself. At this time, due to the flood current in the deep ocean, it is impossible to judge the sinking depth by releasing the length of the traction rope. As the external pressure increases with the increase of the ocean depth, the pressure thrust on the right end of the pressure push plate 119 increases continuously with the change of the sinking depth of the seawater sampler 101. The pressure thrust on the right side of the pressure push plate 119 is greater than that on the left side of the blocking block 118. When the end is subjected to pressure, the blocking block 118 moves to the left side and connects the connecting port 116 to the sampling water inlet 115. At this time, the external seawater enters the sampling test tube 104 through the sampling water inlet 115 and the guide tube 107 for sampling. During the sampling process, the internal pressure of the sampling test tube 104 gradually increases. As the internal pressure of the sampling test tube 104 gradually increases, the pressure relief blocking block 135 is pushed to move toward one end of the pressure distribution groove 134, and the pressure in the negative pressure chamber 112 increases. When the internal pressure of the negative pressure chamber 112 is balanced with the outside world, the left end of the blocking block 118 is subjected to pressure greater than the pressure at the right end, and the sampling water inlet 115 is blocked again. At this time, the seawater sampler 101 can be pulled out of the water by the traction rope. At this time, the shallow seawater will not be mixed into the sampled seawater in the sampling test tube 104.

[0037] The beneficial effects of the present invention are as follows: when in use, the device is directly thrown into the ocean. As the sinking depth increases, the external pressure on the device gradually increases. When the preset pressure is reached, it can be determined that the predetermined depth has been reached, and the device then automatically performs sampling. The device has a simple structure and is easy to operate, with a low cost of use, and is worth recommending for use.

[0038] Through the above methods, those skilled in the art can make various changes according to the working mode within the scope of the present invention.

Claims

1. A sampling device for detecting marine seawater, the sampling device comprising a seawater sampler, a sampling water inlet is provided in the seawater sampler running through it from top to bottom, a filter sheet for filtering is provided at the upper end of the sampling water inlet, a slide is provided in the seawater sampler across the sampling water inlet, a negative pressure chamber is provided at the left end of the slide, an opening groove opening to the right is provided at the right end of the slide, a blocking block which can block the sampling water inlet is slidably provided in the slide, and a connecting port which can communicate with the sampling water inlet is provided in the blocking block running through it from top to bottom, the blocking block blocks the negative pressure chamber A closed space is formed, the right end of the blocking block is fixedly connected with a pressure push plate that can slide in the open groove, the left end of the blocking block is provided with a sliding sleeve groove that opens to the left, a pressure regulating rotating column is slidably provided in the sliding sleeve groove, the left end of the pressure regulating rotating column extends through the negative pressure chamber and extends out of the left end surface of the seawater sampler, a pressure regulating push block threadedly connected to the pressure regulating rotating column is slidably provided in the negative pressure chamber, a pressure regulating spring is fixedly connected between the right end surface of the pressure regulating push block and the left end surface of the blocking block, and a pressure sensor is fixedly provided at the connection between the right end of the pressure regulating spring and the blocking block; The lower end surface of the seawater sampler is provided with an annular bayonet opening downward, and a sampling test tube whose upper end is bayoneted in the bayonet and is used to store sampled seawater is clamped in the seawater sampler; The specific principle of use is that the pressure difference formed between the open groove and the negative pressure chamber at a certain ocean depth is sufficient to push the connecting port to connect the sampling water port to facilitate seawater sampling at this depth, and after collecting appropriate water, the sampling water port is closed again for recovery.

2. A sampling device for detecting ocean water as claimed in claim 1, characterized in that: A three-quarter annular pressure relief ring is provided at the lower side of the slide groove and in the seawater sampler, the front end of the pressure relief ring is connected to the outside through a pressure relief connection port, and is connected to the interior of the chamber of the sampling tube when the sampling tube is sleeved in the bayonet, the end of the pressure relief ring is connected to a pressure matching groove, a pressure relief port is provided between the pressure relief ring and the negative pressure chamber, and a pressure relief blocking block that can slidably isolate the lower end of the pressure relief port is provided in the pressure relief ring; The specific usage principle is that after the sampling water inlet is connected, the external seawater is squeezed into the sampling test tube through the sampling water inlet and the connecting port under the action of pressure for sampling. During the sampling process, the pressure in the sampling test tube increases. At this time, the increased pressure in the pressure relief ring and the connecting section of the sampling test tube pushes the pressure relief blocking block to move toward the side with lower pressure, and exposes the pressure relief port, so that the water pressure in the sampling test tube is squeezed into the negative pressure chamber, thereby balancing the pressure between the negative pressure chamber and the opening groove, and then using the elastic force of the pressure regulating spring to push the blocking block to the right and isolate the sampling water inlet again.

3. A sampling device for detecting ocean water as claimed in claim 2, characterized in that: A binding plastic sleeve is fixedly provided on the lower end surface of the seawater sampler, and the binding plastic sleeve can bind and hold the front and rear sides, the right side and the lower end of the sampling tube to maintain the connection with the seawater sampler. A traction ring is fixedly connected to the lower end of the binding plastic sleeve, and a circular ring is provided on the traction ring. A traction rope is bound on the circular ring. The seawater sampler and the sampling tube can be recovered and released by releasing the traction rope.

4. A sampling device for detecting ocean water as claimed in claim 3, characterized in that: A guide column is fixedly arranged on the lower end surface of the seawater sampler, and a guide tube whose upper end is connected to the water outlet end of the sampling water outlet is arranged in the guide column. A drain device is fixedly connected to the lower end of the guide column, and a drain port opening upward at a forty-five degree angle is arranged in the drain device. The water outlet end of the guide tube is connected to the water inlet end of the drain port, and the drain port and the guide tube are used to reduce the impact on the inner wall of the sampling test tube when water enters when the seawater depth is large.

5. A sampling device for detecting ocean water as claimed in claim 3, characterized in that: The binding plastic sleeve is made of elastic plastic and has a telescopic property, thereby facilitating the removal or installation of the sampling test tube.

6. A sampling device for detecting ocean water as claimed in claim 4, characterized in that: A pressure relief valve is arranged inside the inner wall at the rear side of the negative pressure chamber, and the pressure difference between the negative pressure chamber and the outside is adjusted by the pressure relief valve during use.

7. A sampling device for detecting ocean water as claimed in claim 6, characterized in that: A counterweight is provided in the seawater sampler, and the counterweight is used to increase the weight of the seawater sampler and the sampling tube as a whole, thereby facilitating sinking into the water.

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