Quantitative sampling device for water quality detection

Abstract

The utility model discloses a quantitative sampling device for water quality detection, which belongs to the technical field of water quality sampling and comprises a support, a motor is fixedly mounted at the upper end of the support, a mounting frame is fixedly connected to the bottom of a lifting rope, a sampling mechanism is arranged in a mounting plate, and a positioning mechanism is arranged on one side of the mounting plate. And one side of the mounting plate is fixedly connected with a limiting mechanism. The limiting mechanism is arranged to drive the mounting plate and the sampling mechanism to move downwards synchronously, the sampling mechanism can enter water smoothly, the stability of the sampling mechanism in the lifting process is improved, the baffles are arranged at equal intervals, the positions of the baffles are adjusted according to the needed water taking amount, the final upward moving position of the cross plate can be changed, and the sampling efficiency is improved. The quantitative sampling device has the advantages of simplicity in operation, low cost and accuracy in quantification.

Description

Technical Field

[0001] The utility model belongs to the technical field of water quality sampling, and particularly relates to a quantitative sampling device for water quality detection. Background Art

[0002] A sampling device for water quality testing is a device or tool for collecting water samples. Its main function is to obtain representative water samples from a water source for subsequent water quality testing and analysis. Chinese patent publication number CN110702459A discloses a water quality sampling device, including a sampling bucket, a float and a bracket arranged on the float. A sampling drive assembly for driving the sampling bucket to move up and down is installed on the bracket. The water quality sampling device also includes a mobile control assembly for controlling the movement of the float. The water quality sampling device has the advantages of convenient and fast sampling, simple structure, easy operation and control, and improved safety.

[0003] The problem with the prior art is that the sampling bucket of the water quality sampling device will float on the water surface due to buoyancy when it falls, and it is difficult to directly sink the sampling bucket into the water for sampling by pulling the rope, and the sampling bucket cannot achieve quantitative sampling, and the excess water taken out has to be poured back into the river, which increases the workload. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides a quantitative sampling device for water quality testing, which has the advantages of stable and reliable sampling process, simple equipment operation, low cost and accurate sampling. It solves the problem that the sampling bucket of the existing water quality sampling device floats on the water surface due to buoyancy when falling, and it is difficult to directly sink the sampling bucket into the water for sampling by pulling the rope, and the sampling bucket cannot achieve quantitative sampling, and the excess water taken out has to be poured back into the river, which increases the work intensity.

[0005] The utility model is implemented as follows: a quantitative sampling device for water quality detection comprises a bracket, a motor is fixedly mounted on the upper end of the bracket, an I-shaped wheel is fixedly connected to the output end of the motor, a suspension rope is wound around the I-shaped wheel, a mounting frame is fixedly connected to the bottom of the suspension rope, a mounting plate is fixedly mounted to the bottom of the mounting frame, a sampling mechanism is arranged inside the mounting plate, a positioning mechanism is arranged on one side of the mounting plate, a limiting mechanism is fixedly connected to one side of the mounting plate, the limiting mechanism is slidably connected to the bracket, a plug rod is fixedly mounted on the bottom of the bracket, and the plug rod is plugged into the bottom of the water.

[0006] As a preferred embodiment of the utility model, the limiting mechanism includes a slider, which is slidably connected to the inner wall of the bracket, a counterweight block is fixedly connected to the lower surface of the slider, connecting plates are fixedly connected on both sides of the slider, rollers are rotatably connected to the two connecting plates, and the rollers are rollingly connected to one side of the bracket.

[0007] As a preferred embodiment of the utility model, the sampling mechanism includes a sampling barrel, a piston rod, a cross plate and a piston block. The sampling barrel is fixedly installed in the middle of the mounting plate, the upper and lower ends of the piston rod are fixedly connected to the cross plate and the piston block respectively, and the piston block is slidably connected to the inside of the sampling barrel.

[0008] As a preferred embodiment of the present invention, one of the left and right ends of the cross plate is slidably mounted on the first guide rod, and the upper and lower ends of the first guide rod are respectively fixedly connected to the lower surface of the mounting frame and the upper surface of the mounting plate.

[0009] As a preferred embodiment of the utility model, the lower surfaces of both ends of the front and rear ends of the cross plate are respectively fixedly connected with a second guide rod and an electric push rod, the second guide rod slides through the mounting plate, and the electric push rod is fixedly mounted on the lower surface of the mounting plate.

[0010] As a preferred embodiment of the utility model, the positioning mechanism includes a rotating rod, on which a plurality of baffles are equidistantly arranged in a spiral shape, the bottom of the rotating rod is rotatably mounted on the mounting plate, the top of the rotating rod is rotatably inserted through the upper end of the mounting frame, the upper end of the rotating rod is rotatably sleeved in a positioning ring, and the positioning ring is fixedly mounted on the upper surface of the mounting frame.

[0011] As a preferred embodiment of the utility model, a protrusion is integrally provided on the top of the rotating rod, a plurality of screw holes are opened on the circumference of the positioning ring, a screw rod is inserted into the inside of the protrusion, and the lower end of the screw rod is threadedly connected to the screw hole.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model drives the mounting plate and the sampling mechanism to move downward synchronously by setting a limit mechanism, which can ensure that the sampling mechanism enters the water smoothly and improve the stability of the sampling mechanism during the lifting process.

[0014] 2. The utility model arranges a number of baffles at equal intervals and adjusts the positions of the baffles according to the required water intake, which can change the final position of the cross plate moving upward, thereby achieving quantitative sampling, and has the advantages of simple operation, low cost and precise quantification. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the limiting mechanism in the utility model;

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the positioning mechanism in the utility model;

[0018] Figure 4It is a schematic diagram of a partially cutaway three-dimensional structure of the utility model;

[0019] Figure 5 For the utility model Figure 4 A magnified view of the structure in the middle.

[0020] In the figure: 1, bracket; 2, positioning mechanism; 3, motor; 4, I-shaped wheel; 5, lifting rope; 6, mounting frame; 7, sampling mechanism; 8, first guide rod; 9, limiting mechanism; 10, insertion rod; 11, electric push rod; 12, second guide rod; 13, mounting plate; 201, rotating rod; 202, baffle; 203, positioning ring; 204, bump; 205, screw; 206, screw hole; 701, sampling tube; 702, piston rod; 703, cross plate; 704, piston block; 901, slider; 902, counterweight; 903, connecting plate; 904, roller. DETAILED DESCRIPTION

[0021] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0022] The structure of the utility model is described in detail below in conjunction with the accompanying drawings.

[0023] like Figures 1 to 5 As shown, a quantitative sampling device for water quality detection provided by an embodiment of the utility model includes a bracket 1, a motor 3 is fixedly installed on the upper end of the bracket 1, an I-shaped wheel 4 is fixedly connected to the output end of the motor 3, a suspension rope 5 is wound around the I-shaped wheel 4, a mounting frame 6 is fixedly connected to the bottom of the suspension rope 5, a mounting plate 13 is fixedly installed on the bottom of the mounting frame 6, a sampling mechanism 7 is arranged inside the mounting plate 13, a positioning mechanism 2 is arranged on one side of the mounting plate 13, a limiting mechanism 9 is fixedly connected to one side of the mounting plate 13, the limiting mechanism 9 is slidably connected to the bracket 1, an insertion rod 10 is fixedly installed on the bottom of the bracket 1, and the insertion rod 10 is inserted to the bottom of the water.

[0024] During the specific setting, the bracket 1 is fixed in the sampling area by the insertion rod 10, and the I-wheel 4 is driven to rotate by starting the motor 3 to release the suspension rope 5, so that the limiting mechanism 9 moves downward under the action of gravity, thereby bringing the sampling mechanism 7 into the water for sampling. After the sampling is completed, the suspension rope 5 is turned over by the motor 3 to reel in, thereby driving the sampling mechanism 7 to move upward, taking out the sample, and completing the sampling work.

[0025] Furthermore, the limiting mechanism 9 includes a slider 901, which is slidably connected to the inner wall of the bracket 1, and a counterweight 902 is fixedly connected to the lower surface of the slider 901. Both sides of the slider 901 are fixedly connected to connecting plates 903, and both connecting plates 903 are rotatably connected to rollers 904, which are rollingly connected to one side of the bracket 1.

[0026] In the present application, during the rope lowering process, the counterweight block 902 drives the mounting plate 13 and the sampling mechanism 7 to move downward synchronously, which can ensure that the sampling mechanism 7 enters the water smoothly. By making the slider 901 slidingly connected to the bracket 1 and the connecting plate 903 rollingly connected to the bracket 1, the mounting plate 13 can be guided and limited, thereby improving the stability of the mounting plate 13 during the lifting process.

[0027] Furthermore, the sampling mechanism 7 includes a sampling cylinder 701, a piston rod 702, a cross plate 703 and a piston block 704. The sampling cylinder 701 is fixedly installed in the middle of the mounting plate 13. The upper and lower ends of the piston rod 702 are fixedly connected to the cross plate 703 and the piston block 704 respectively. The piston block 704 is slidably connected to the inside of the sampling cylinder 701. One of the left and right ends of the cross plate 703 is slidably mounted on the first guide rod 8. The upper and lower ends of the first guide rod 8 are respectively fixedly connected to the lower surface of the mounting frame 6 and the upper surface of the mounting plate 13. The lower surfaces of the two ends of the front and rear ends of the cross plate 703 are respectively fixedly connected with the second guide rod 12 and the electric push rod 11. The second guide rod 12 slides through the mounting plate 13, and the electric push rod 11 is fixedly installed on the lower surface of the mounting plate 13.

[0028] In the present application, when sampling, the electric push rod 11 drives the cross plate 703 and the piston block 704 to move upward to draw water into the sampling tube 701. When the sampling mechanism 7 moves out of the water surface, the electric push rod 11 drives the cross plate 703 to move downward to squeeze out the water quality sample, which is collected and transferred through the sample container for subsequent testing.

[0029] By providing the second guide rod 12 and the first guide rod 8, the stability of the cross plate 703 can be improved, the cross plate 703 can be prevented from being offset and causing jamming, the smoothness of sampling can be improved, and water leakage can be avoided.

[0030] Furthermore, the positioning mechanism 2 includes a rotating rod 201, on which a plurality of baffles 202 are equidistantly arranged in a spiral pattern. The bottom of the rotating rod 201 is rotatably mounted on the mounting plate 13, and the top of the rotating rod 201 rotates through the upper end of the mounting frame 6. The upper end of the rotating rod 201 is rotatably sleeved in a positioning ring 203, and the positioning ring 203 is fixedly mounted on the upper surface of the mounting frame 6. A protrusion 204 is integrally provided at the top of the rotating rod 201, and a plurality of screw holes 206 are opened on the circumference of the positioning ring 203. A screw 205 is inserted into the inside of the protrusion 204, and the lower end of the screw 205 is threadedly connected to the screw hole 206.

[0031] In the present application, the protrusion 204 corresponds to the position of the bottom baffle 202. When the rotating rod 201 is rotated, the protrusion 204 and the screw 205 rotate synchronously. When the screw 205 corresponds to the position of one of the screw holes 206, it means that the bottom baffle 202 also rotates by the same angle. The baffles 202 are arranged equidistantly. When different baffles 202 move to the top of the cross plate 703, the distance that the cross plate 703 can move upward is also different, so that the water intake is also different, so as to achieve quantitative sampling. In specific operations, the corresponding baffle is determined according to the water intake. 202, rotate the corresponding baffle 202 to just above the cross plate 703, at this time, the screw 205 corresponds to the position of one of the screw holes 206, and the bottom of the screw 205 is moved downward and threadedly connected with the screw hole 206 by rotating the screw 205, so as to limit the rotating rod 201 and the baffle 202. When the sampling mechanism 7 is moved into the water, the cross plate 703 is driven to move upward by the electric push rod 11 until the cross plate 703 is against the corresponding baffle 202, so that an appropriate amount of water can be taken out. This technical solution has the advantages of simple operation, low cost and precise quantitative measurement.

[0032] The working principle of this utility model:

[0033] The corresponding baffle 202 is determined according to the water intake, and the corresponding baffle 202 is rotated to the top of the cross plate 703. At this time, the screw 205 corresponds to the position of one of the screw holes 206. The screw 205 is rotated to make its bottom move downward and be threadedly connected with the screw hole 206, so as to limit the rotating rod 201 and the baffle 202. The bracket 1 is fixed in the sampling area by the insertion rod 10, and the motor 3 is started to drive the I-shaped wheel 4 to rotate, and the suspension rope 5 is released, so that the limiting mechanism 9 moves downward under the action of gravity, so as to bring the sampling mechanism 7 into the water for sampling. When the sampling mechanism 7 moves into the water, the cross plate 703 is driven to move upward by the electric push rod 11 until the cross plate 703 is against the corresponding baffle 202, so that an appropriate amount of water can be taken out, and then the sampling mechanism 7 is driven to move upward by the reverse rotation of the motor 3. When the sampling mechanism 7 moves out of the water, the cross plate 703 is driven to move downward by the electric push rod 11 to squeeze out the water quality sample, which is collected and transferred through the sample container for subsequent detection.

[0034] To sum up: this quantitative sampling device for water quality detection, by setting a limit mechanism 9 to drive the mounting plate 13 and the sampling mechanism 7 to move downward synchronously, can ensure that the sampling mechanism 7 enters the water smoothly, and improves the stability of the sampling mechanism 7 during the lifting process. By equidistantly setting a number of baffles 202 and adjusting the position of the baffles 202 according to the required water intake, the final position of the cross plate 703 can be changed, thereby realizing quantitative sampling, and has the advantages of simple operation, low cost, and precise quantification.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quantitative sampling device for water quality detection, comprising a bracket (1), characterized in that: A motor (3) is fixedly mounted on the upper end of the bracket (1); an I-shaped wheel (4) is fixedly connected to the output end of the motor (3); a suspension rope (5) is wound around the I-shaped wheel (4); a mounting frame (6) is fixedly connected to the bottom of the suspension rope (5); a mounting plate (13) is fixedly mounted to the bottom of the mounting frame (6); a sampling mechanism (7) is arranged inside the mounting plate (13); a positioning mechanism (2) is arranged on one side of the mounting plate (13); a limiting mechanism (9) is fixedly connected to one side of the mounting plate (13); the limiting mechanism (9) is slidably connected to the bracket (1); a plug rod (10) is fixedly mounted on the bottom of the bracket (1); the plug rod (10) is plugged into the bottom of the water.

2. A quantitative sampling device for water quality detection as claimed in claim 1, characterized in that: The limiting mechanism (9) comprises a slider (901), the slider (901) is slidably connected to the inner wall of the bracket (1), a counterweight (902) is fixedly connected to the lower surface of the slider (901), connecting plates (903) are fixedly connected to both sides of the slider (901), and rollers (904) are rotatably connected to the two connecting plates (903), and the rollers (904) are rollingly connected to one side of the bracket (1).

3. A quantitative sampling device for water quality detection as claimed in claim 1, characterized in that: The sampling mechanism (7) comprises a sampling barrel (701), a piston rod (702), a cross plate (703) and a piston block (704); the sampling barrel (701) is fixedly mounted on the middle part of the mounting plate (13); the upper and lower ends of the piston rod (702) are fixedly connected to the cross plate (703) and the piston block (704) respectively; and the piston block (704) is slidably connected to the inside of the sampling barrel (701).

4. A quantitative sampling device for water quality detection as claimed in claim 3, characterized in that: One of the left and right ends of the cross plate (703) is slidably mounted on the first guide rod (8), and the upper and lower ends of the first guide rod (8) are fixedly connected to the lower surface of the mounting frame (6) and the upper surface of the mounting plate (13) respectively.

5. A quantitative sampling device for water quality detection as claimed in claim 3, characterized in that: The lower surfaces of both ends of the front and rear ends of the cross plate (703) are respectively fixedly connected with a second guide rod (12) and an electric push rod (11); the second guide rod (12) slides through the mounting plate (13); and the electric push rod (11) is fixedly mounted on the lower surface of the mounting plate (13).

6. A quantitative sampling device for water quality detection as claimed in claim 1, characterized in that: The positioning mechanism (2) comprises a rotating rod (201), on which a plurality of baffles (202) are equidistantly arranged in a spiral arrangement, the bottom of the rotating rod (201) is rotatably mounted on a mounting plate (13), the top of the rotating rod (201) is rotatably passed through the upper end of a mounting frame (6), the upper end of the rotating rod (201) is rotatably sleeved in a positioning ring (203), and the positioning ring (203) is fixedly mounted on the upper surface of the mounting frame (6).

7. A quantitative sampling device for water quality detection as claimed in claim 6, characterized in that: The top of the rotating rod (201) is integrally provided with a protrusion (204), the upper circumference of the positioning ring (203) is provided with a plurality of screw holes (206), a screw rod (205) is inserted into the inside of the protrusion (204), and the lower end of the screw rod (205) is threadedly connected to the screw hole (206).

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