Deepwater sampler

Abstract

The deepwater sampler comprises a sampling barrel, a sealing cover is arranged at the opening end of the sampling barrel, a driving air cylinder and a conveying pipe are arranged on the sealing cover, the conveying pipe is provided with a one-way valve, a guide block is arranged at the bottom of the sampling barrel, and the diameter of a circumcircle of the guide block is gradually reduced along with the reduction of the height of the guide block. First through holes are formed in the guide block and the sampling barrel, a first through groove is formed in the guide block, the first through groove is communicated with the first through holes, a first limiting pipe is arranged in the sampling barrel, a sealing plate is arranged in the first limiting pipe, and the sealing plate is in transmission connection with the driving air cylinder; the sealing plate is of a sheet-shaped structure capable of sliding along the central axis of the first limiting pipe, and a second through groove is formed in the first limiting pipe. The resistance of the sampler in the descending process can be reduced, and the situation that surface water mixed in the sampler pollutes deep area collection can be reduced. The utility model has the advantages of convenient use and wide market prospect.

Description

Technical Field

[0001] The utility model relates to the field of deep - water sampling equipment, and particularly relates to a deep - water sampler. Background Art

[0002] With the increasing intensity and accelerating speed of water resource development and utilization, people's awareness of ecological environment has been continuously enhanced, and the attention to water environment problems at home and abroad has also been continuously improved. At present, water environment is regarded as a key point in domestic environmental protection and related work of project environmental assessment. As a water quality element of water environment evaluation, it is an important index to measure the degree of water area damage and the health of drinking water. Accurate water quality indexes can provide a reliable basis for environmental protection. Water sample collection is an important link in water environment evaluation; it is not simply collecting water samples, because the water samples for analysis should be representative and can accurately reflect the concentration and indexes of water quality parameters.

[0003] Multiple water quality parameter elements such as biochemical oxygen demand, nitrogen, phosphorus, etc. cannot be obtained through on - line monitoring and must be measured offline strictly in accordance with the requirements of detection technology. And accurate and reliable analysis results of water quality parameters depend on the reliability of the collected samples. Since the abundances of various metal ions or non - metal ions in surface waters such as reservoirs and rivers change in a gradient with water depth, therefore, when collecting water samples in areas with a relatively large depth, samples need to be collected separately according to the water depth in order to comprehensively judge the abundance of a certain metal ion or non - metal ion in this area. Considering the cost, using a sampler to collect water samples at a certain depth can greatly save the capital investment in sample collection equipment. However, although there are various commercially available deep - water samplers, perhaps due to cost - production considerations of manufacturers, during the process of most deep - water samplers descending in water, some surface water samples will be mixed in. Although the mixing of a small amount of surface water samples has little impact on the overall analysis result, for polluted areas, if the analysis index is within the critical range, it is difficult to effectively judge the pollution level based on the analysis result of this sample.

[0004] Deep water samplers applied to marine water quality collection are more massive in volume, and the cost is too high after miniaturization. Although they can meet the requirements of sample collection, the capital investment is huge. Moreover, many solenoid valves are used in the water delivery channel of this sampler. Although they are convenient to use and the solenoid valves themselves are waterproof, with the increase of service time, water seepage still occurs in the circuit area of the solenoid valves themselves, resulting in damage. In addition, the procurement price of the solenoid valves themselves is relatively high. Therefore, from the perspective of mechanical design, it is a direction worthy of consideration to design a sampler with reliable structure, which can prevent surface water samples from being mixed into the collected samples during the descent of the sampler in water, and can reduce the resistance suffered by the sampler during the descent, making it easier for the sampler to fall to the depth where the samples are located, thus reducing the difficulty of collecting samples, so as to make the product more in line with market demand. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the utility model provides a deep water sampler that can reduce the resistance suffered by the sampler during the descent and can reduce the surface water mixed into the sampler, thereby contaminating the water samples collected in the deep layer area, so as to overcome the defects in the prior art.

[0006] The technical solution adopted by the utility model is as follows: a deep water sampler includes a sampling bucket. A cover is arranged at the open end of the sampling bucket. A driving cylinder and a delivery pipe are arranged on the cover. A one-way valve is arranged on the delivery pipe. A guiding block is arranged at the bottom of the sampling bucket. The outer diameter of the circumscribed circle of the guiding block gradually becomes smaller as the height of the guiding block decreases. A first through hole is arranged on the guiding block and the sampling bucket. A first through groove is arranged on the guiding block outside the first through hole. The first through groove is communicated with the first through hole. A first limiting pipe is arranged in the sampling bucket. A sealing plate is arranged in the first limiting pipe. The sealing plate is in transmission connection with the driving cylinder. The sealing plate adopts a sheet structure that can slide along the central axis of the first limiting pipe. A second through groove is arranged on the first limiting pipe. The central axis of the first limiting pipe and the central axis of the first through hole are on the same axis. The number of the second through grooves and the number of the first through grooves are both several. The several first through grooves and the several second through grooves are evenly distributed in a star shape outside the central axis of the first through hole.

[0007] Preferably, a first guiding cone is arranged on one side of the sealing plate facing the first through hole. The central axis of the first guiding cone and the central axis of the first through hole are on the same axis. The maximum diameter of the first guiding cone is not greater than the diameter of the first through hole. A first sealing ring is arranged on the inner side of the sampling bucket outside the first guiding cone. The sealing plate outside the first guiding cone is connected with the first sealing ring.

[0008] Preferably, the guiding block adopts a frustum-shaped structure. The large end of the guiding block is connected to the sampling barrel. A connecting ring is provided on the large end of the guiding block. Connecting columns are provided between the connecting ring and the first through hole. A second guiding cone is provided at the end of the connecting column away from the first through hole. The connecting column is threadedly connected to the connecting ring.

[0009] Preferably, a fixing ring is provided at the end of the first limiting tube away from the first through hole. A second limiting tube is provided at the end of the fixing ring away from the first limiting tube. Transmission connecting rods are provided between the fixing ring and the second limiting tube. The transmission connecting rod adopts a rod-shaped structure capable of sliding along the central axis of the second limiting tube. The central axis of the second limiting tube and the central axis of the first through hole are on the same axis. The transmission connecting rod is in transmission connection with the output end of the driving cylinder.

[0010] Preferably, a connecting flange is provided on the outside of the driving cylinder. The connecting flange is located on the side of the cover away from the sampling barrel. First fixing bolts are provided between the connecting flange and the cover. A second sealing ring is provided between the connecting flange and the cover.

[0011] Preferably, a connecting plate is provided on the outside of the sampling barrel. The number of connecting plates is several. The several connecting plates are evenly distributed in a star shape on the outside of the sampling barrel. The cover is located inside the several connecting plates. A second through hole is provided on each connecting plate.

[0012] Preferably, a ball valve is provided on the conveying pipe.

[0013] The beneficial effects of the present utility model are as follows: First, the present utility model realizes the installation of a guiding block at the bottom of the sampling barrel, and uses the shape of the sampling barrel to reduce the resistance suffered by the sampler of the sampling barrel during the descending process. In this process, the guiding block also acts as a counterweight; and the driving cylinder of this product is used as the power source for the movement of the sealing plate. Although high-pressure gas needs to be filled into the driving cylinder during use to enable the driving cylinder to work; however, the driving cylinder is not an electrical component. Compared with using a solenoid valve to control the flow path, it will not cause damage to the equipment due to moisture, and the reliability is higher.

[0014] Secondly, a first through groove is provided on the guiding block outside the first through hole of the present utility model. The first through groove is communicated with the first through hole. A first limiting tube is provided in the sampling barrel. A sealing plate is provided in the first limiting tube. A second through groove is provided on the first limiting tube. The central axis of the first limiting tube and the central axis of the first through hole are on the same axis. The number of the second through grooves and the number of the first through grooves are both several. The several first through grooves and the several second through grooves are both evenly distributed in a star shape outside the central axis of the first through hole; the purpose of providing several first through grooves and several second through grooves is to facilitate the sampling barrel to maintain force balance during the process of the water sample being transported to the sampling barrel through the first through groove, the first through hole, and the second through groove in sequence.

[0015] Finally, a connecting plate is provided on the outer side of the sampling bucket of the present utility model. The number of the connecting plates is several, and the several connecting plates are evenly distributed in a star shape on the outer side of the sampling bucket. The cover is located inside the several connecting plates, and a second through hole is provided on each connecting plate; installing the connecting plate facilitates fixing the sampling bucket by using a rope and controlling the descent of the sampling bucket by using a rope.

[0016] The present utility model has the advantages of simple structure, convenient operation, ingenious design, greatly improving the work efficiency, having good social and economic benefits, and being a product easy to popularize and use. Description of the Drawings

[0017] Figure 1 It is a schematic structural view of the present utility model.

[0018] Figure 2 is Figure 1 A partially enlarged schematic view of Detail A.

[0019] Figure 3 It is a schematic structural view of the present utility model. Detailed Embodiment

[0020] As Figures 1 to 3 shown, a deep - water sampler includes a sampling bucket 1. The sampling bucket 1 has a cylindrical structure with an open top. A cover 2 is provided at the open end of the sampling bucket 1. A driving cylinder 3 and a delivery pipe 4 are provided on the cover 2. The delivery pipe 4 is provided with a one - way valve 5 and a ball valve 25. A guiding block 6 is provided at the bottom of the sampling bucket 1. The outer - circumferential diameter of the guiding block 6 gradually decreases as the height of the guiding block 6 decreases. A first through - hole 7 is provided on the guiding block 6 and the sampling bucket 1. The central axis of the sampling bucket 1 and the central axis of the first through - hole 7 are on the same axis. A first through - groove 8 is opened on the guiding block 6 outside the first through - hole 7. The first through - groove 8 is communicated with the first through - hole 7. A first limiting pipe 9 is provided inside the sampling bucket 1. A sealing plate 10 is provided inside the first limiting pipe 9. The sealing plate 10 is in transmission connection with the driving cylinder 3. The sealing plate 10 is a sheet - like structure capable of sliding along the central axis of the first limiting pipe 9. A second through - groove 11 is opened on the first limiting pipe 9. The central axis of the first limiting pipe 9 and the central axis of the first through - hole 7 are on the same axis. The number of the second through - grooves 11 and the number of the first through - grooves 8 are both several, and the several first through - grooves 8 and the several second through - grooves 11 are both evenly distributed in a star shape outside the central axis of the first through - hole 7.

[0021] On one side of the sealing plate 10 facing the first through hole 7, a first guiding cone 12 is provided, which is convenient for guiding the water flow entering the sampling bucket 1 through the first through hole 7, so that the force on the sealing plate 10 is more uniform; the central axis of the first guiding cone 12 and the central axis of the first through hole 7 are on the same axis, the maximum diameter of the first guiding cone 12 is not greater than the diameter of the first through hole 7, and a first sealing ring 13 is arranged on the inner side of the sampling bucket 1 outside the first guiding cone 12. The first sealing ring 13 is connected to the sealing plate 10 outside the first guiding cone 12; the first sealing ring 13 is an annular structure made of rubber material. Installing the first sealing ring 13 is convenient for reducing the gap between the sealing plate 10 and the sampling bucket 1, and is convenient for reducing the gap between the sealing plate 10 and the sampling bucket 1 in the closed state, and reducing the leakage of the collected water sample from between the sealing plate 10 and the sampling bucket 1.

[0022] The guiding block 6 has a frustum-shaped structure. The large end of the guiding block 6 is connected to the sampling bucket 1. A connecting ring 14 is arranged on the large end of the guiding block 6. A connecting column 15 is arranged between the connecting ring 14 and the first through hole 7. A second guiding cone 16 is arranged at one end of the connecting column 15 far from the first through hole 7. The second guiding cone 16 has a conical structure. The connecting column 15 is threadedly connected to the connecting ring 14. Installing the second guiding cone 16 is convenient for guiding the water below the sampling bucket 1 during the descent of the sampling bucket 1, and reducing the resistance received by the sampling bucket 1 during the descent.

[0023] A fixing ring 17 is arranged at one end of the first limiting tube 9 far from the first through hole 7. A second limiting tube 18 is arranged at one end of the fixing ring 17 far from the first limiting tube 9. A transmission connecting rod 19 is arranged on the fixing ring 17 and the second limiting tube 18. The transmission connecting rod 19 is connected to the sealing plate 10. The transmission connecting rod 19 has a rod-shaped structure capable of sliding along the central axis of the second limiting tube 18. Installing the second limiting tube 18 is convenient for limiting the movement direction of the transmission connecting rod 19; the central axis of the second limiting tube 18 and the central axis of the first through hole 7 are on the same axis, and the transmission connecting rod 19 is in transmission connection with the output end of the driving cylinder 3.

[0024] A connecting flange 20 is arranged outside the driving cylinder 3. The connecting flange 20 is located on the side of the cover 2 far from the sampling bucket 1. A first fixing bolt 21 is arranged on the connecting flange 20 and the cover 2. A second sealing ring 22 is arranged between the connecting flange 20 and the cover 2. The second sealing ring 22 is also an annular structure made of rubber material. Installing the second sealing ring 22 is convenient for the gap between the required connecting flange 20 and the cover 2.

[0025] A connecting plate 23 is arranged on the outer side of the sampling bucket 1. The number of the connecting plates 23 is several, and several connecting plates 23 are evenly distributed in a star shape on the outer side of the sampling bucket 1. The cover 2 is located inside the several connecting plates 23, and a second through hole 24 is arranged on each connecting plate 23.

[0026] The usage method of this product is as follows: As Figures 1 to 3 shown, before formal use, the preparation work of this product needs to be completed, including the following steps: First, pass a rope through the second through holes 24 on the several connecting plates 23 and fix it; then, install air delivery pipes on both gas delivery ends of the driving cylinder 3; when the above operations are completed, the preparation work of this product is completed, and this product can be used to collect samples.

[0027] The sample collection process of this product includes the following steps: First, after reaching the target sampling area, adjust the guiding block 6 of this product to the lower part of the sampling bucket 1 and then put this product into the target sampling area; then, use the rope to control the descending depth of the sampling bucket 1, and judge whether this product reaches the target sampling depth according to the released length of the rope. When this product reaches the target sampling depth, send gas into one air delivery pipe to drive the extension rod of the driving cylinder 3 to contract, so that the sealing plate 10 moves away from the first through hole 7. At this time, the water in the area where the sampling bucket 1 is located enters the inner cavity of the first through hole 7 through several first through grooves 8. The water transported to the first limiting pipe 9 through the first through hole 7 is guided by the first guiding cone 12 and then transported to the inner cavity of the sampling bucket 1 through several second through grooves 11. During this process, since the water sample enters the inner cavity of the sampling bucket 1, the air in the inner cavity of the sampling bucket 1 is discharged outward through the delivery pipe 4 under the guidance of the one-way valve 5. During this process, the ball valve 25 is in the open state; then, when the preset sampling time is reached, send gas into the other air delivery pipe to drive the extension rod of the driving cylinder 3 to extend, so that the sealing plate 10 moves away from the first through hole 7 to the position where the sealing plate 10 is in contact with the first sealing ring 13; finally, the staff drives the rope to lift this product to the target area, closes the ball valve 25, and disassembles the rope and the two air delivery pipes.

[0028] It should be noted that if it is necessary to take out the water sample collected by this product, this product needs to be inverted first. At this time, the guiding block 6 is located above the sampling bucket 1. Open the ball valve 25 and open the driving cylinder 3 to drive the sealing plate 10 to move away from the first through hole 7; then, the water sample collected in the sampling bucket 1 is discharged outward through the delivery pipe 4, and the outside air enters the inner cavity of the sampling bucket 1 in turn through the first through groove 8, the first through hole 7 and the second through groove 11 until all the collected water samples in the sampling bucket 1 are discharged; finally, open the driving cylinder 3 again to drive the sealing plate 10 to move towards the first through hole 7 to the position where the sealing plate 10 is in contact with the first sealing ring 13.

[0029] Through this embodiment, by installing a guiding block 6 at the bottom of the sampling bucket 1, the shape of the sampling bucket 1 is utilized to reduce the resistance suffered by the sampler of the sampling bucket 1 during the descending process, and during this process, the guiding block 6 also functions as a counterweight; moreover, the driving cylinder 3 of this product serves as the power source for the movement of the sealing plate 10. Although high-pressure gas needs to be filled into the driving cylinder 3 during use to enable the driving cylinder 3 to work; however, the driving cylinder 3 is not an electrical component. Compared with using a solenoid valve to control the flow path, it will not cause damage to the equipment due to moisture, and the reliability is higher.

[0030] The above-described embodiments are only the preferred embodiments of the present invention, and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features, and principles described in the scope of the present invention patent shall be included within the scope of the patent application of the present invention.

Claims

1. A deep water sampler, characterized in that: The sampling barrel (1) comprises a sealing cover (2) on the open end of the sampling barrel (1), a driving cylinder (3) and a delivery pipe (4) on the sealing cover (2), a one-way valve (5) on the delivery pipe (4), a guide block (6) on the bottom of the sampling barrel (1), the circumscribed circle diameter of the guide block (6) gradually decreases as the height of the guide block (6) decreases, a first through hole (7) is provided on the guide block (6) and the sampling barrel (1), a first through groove (8) is provided on the guide block (6) outside the first through hole (7), the first through groove (8) and the first through hole (7) are connected, and a first limiting valve (5) is provided in the sampling barrel (1). A first limiting tube (9) is provided with a sealing plate (10) in the first limiting tube (9), the sealing plate (10) is drivingly connected to the driving cylinder (3), the sealing plate (10) is a sheet structure capable of sliding along the central axis of the first limiting tube (9), a second through groove (11) is provided on the first limiting tube (9), the central axis of the first limiting tube (9) and the central axis of the first through hole (7) are located on the same axis, the number of the second through groove (11) and the number of the first through groove (8) are both multiple, and the multiple first through grooves (8) and the multiple second through grooves (11) are uniformly distributed in a star shape outside the central axis of the first through hole (7).

2. The deep water sampler according to claim 1, characterized in that: A first guide cone (12) is provided on the side of the sealing plate (10) facing the first through hole (7); the central axis of the first guide cone (12) and the central axis of the first through hole (7) are located on the same axis; the maximum diameter of the first guide cone (12) is not greater than the diameter of the first through hole (7); a first sealing ring (13) is provided on the inner side of the sampling barrel (1) outside the first guide cone (12); and the sealing plate (10) outside the first guide cone (12) and the first sealing ring (13) are connected.

3. The deep water sampler according to claim 1, characterized in that: The guide block (6) has a truncated cone structure. The large end of the guide block (6) is connected to the sampling barrel (1). A connecting ring (14) is provided on the large end of the guide block (6). A connecting column (15) is provided between the connecting ring (14) and the first through hole (7). A second guide cone (16) is provided on the end of the connecting column (15) away from the first through hole (7). The connecting column (15) and the connecting ring (14) are threadedly connected.

4. The deep water sampler according to claim 1, characterized in that: A fixing ring (17) is provided on one end of the first position-limiting tube (9) away from the first through hole (7); a second position-limiting tube (18) is provided on one end of the fixing ring (17) away from the first position-limiting tube (9); a transmission connecting rod (19) is provided on the fixing ring (17) and the second position-limiting tube (18); the transmission connecting rod (19) is a rod-shaped structure capable of sliding along the central axis of the second position-limiting tube (18); the central axis of the second position-limiting tube (18) and the central axis of the first through hole (7) are located on the same axis; and the transmission connecting rod (19) is transmission-connected to the output end of the driving cylinder (3).

5. The deep water sampler according to claim 1, characterized in that: A connecting flange (20) is provided on the outer side of the driving cylinder (3), and the connecting flange (20) is located on a side of the cover (2) away from the sampling barrel (1). A first fixing bolt (21) is provided on the connecting flange (20) and the cover (2), and a second sealing ring (22) is provided between the connecting flange (20) and the cover (2).

6. The deep water sampler according to claim 1, characterized in that: The sampling barrel (1) is provided with a connecting plate (23) on the outside. The connecting plates (23) are provided in a plurality and are evenly distributed in a star shape on the outside of the sampling barrel (1). The cover (2) is located on the inside of the plurality of connecting plates (23), and each connecting plate (23) is provided with a second through hole (24).

7. The deep water sampler according to claim 1, characterized in that: The delivery pipe (4) is provided with a ball valve (25).

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