Water quality sampler

Abstract

The utility model relates to the technical field of environment detection, and discloses a water quality sampler which comprises a sealing bin, a transmission bin and a sampling barrel, the sealing bin is detachably connected with the sampling barrel through the transmission bin, a driving motor is installed in the sealing bin, a transmission piece is installed in the transmission bin, and a rotating shaft of the driving motor is connected with the power input end of the transmission piece. A piston is installed in the sampling barrel, the transmission piece is used for pushing or pulling the piston to slide, and the piston is detachably installed on the transmission piece. The utility model has the beneficial effects that the square block enters the accommodating groove from the square hole and then rotates, so that the square block can be clamped below the cover plate, then the piston can be pulled through the square block to suck sample water, and after the sampling is completed, the square block is rotated in the opposite direction and retreats from the square hole, so that the sampled sampling bin can be quickly detached, and the sampling bin is convenient to use. And finally, a new sampling bin is used for repeating the operation for re-sampling, so that the operation is simple and the working efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental detection, in particular to a water quality sampler. Background Art

[0002] Water is the source of life. Human beings cannot live without water in their daily life and production activities. The quality of domestic water is closely related to human health. With the continuous development of China's economy, the industrialization process is getting faster and faster. However, with the continuous development of industrialization, the environmental problems brought about are becoming more and more prominent, especially the problem of surface river pollution is quite serious. When studying and analyzing the water quality of some polluted rivers or lakes, staff are often required to take water quality samples. In the process of water quality sampling, sometimes it is necessary to take water quality at different depths of polluted rivers or lakes. Some water quality samplers in the existing market often only have sampling functions, but cannot accurately take water quality at deeper locations, thus affecting the accurate detection of water quality, and further affecting the objective evaluation of the water quality of the sampled rivers or lakes.

[0003] The Chinese utility model patent (authorization announcement number: CN201993248U name: water quality sampler) includes a cylinder and a piston, and a one-way valve is provided at the lower end of the cylinder; the piston is placed in the cylinder, and the piston rod extends to the outside of the cylinder after passing through the through hole at the top of the cylinder. The cylinder and the piston rod are respectively connected to the first sling and the second sling. The utility model has a simple structure and is easy to use. The entire sampling process can strictly collect water samples of corresponding depths in accordance with national standards, so that the monitoring data is accurate, which is suitable for both static and dynamic water samples. However, after sampling, the sample water needs to be stored in a sample bottle before sampling can be performed again. When multiple sampling operations are required in the same area, the operation is cumbersome and the work efficiency is low. Utility Model Content

[0004] The utility model aims to provide a water quality sampler to overcome the shortcomings of the prior art.

[0005] The purpose of the utility model is achieved through the following technical solutions: a water quality sampler, comprising a sealing chamber, a transmission chamber and a sampling barrel, wherein the sealing chamber and the sampling barrel are detachably connected through the transmission chamber, a water inlet is provided on the barrel cover of the sampling barrel, and the water inlet is far away from the transmission chamber, a driving motor is installed in the sealing chamber, a transmission member is installed in the transmission chamber, the rotating shaft of the driving motor is connected with the power input end of the transmission member, a piston is installed in the sampling barrel, the transmission member is used to push or pull the piston to slide, a receiving groove is provided on the piston, a square block is rotatably installed in the receiving groove, the square block is forwardly or reversely rotated by the transmission member, two limit blocks are fixed on the inner wall of the receiving groove, the two limit blocks are respectively located on both sides of the square block, the limit blocks are used to limit the rotation angle of the square block, a cover plate covering the limit block is fixed on the piston, a square hole communicating with the receiving groove is provided on the cover plate, and the size of the square hole is adapted to the size of the square block.

[0006] Preferably, the transmission member includes a screw rod, a guide rod, a nut and a bearing seat. The screw rod is connected to the rotating shaft of the driving motor through a coupling. The bearing seat is used to rotatably install the screw rod in the transmission bin. The nut is screwed on the screw rod. The square block and the nut are connected through the guide rod that passes through the bearing seat.

[0007] Preferably, the barrel covers at both ends of the sampling barrel are detachable.

[0008] Preferably, a countersunk through hole is provided on the tube cover close to the transmission chamber, the countersunk through hole is coaxial with the sampling tube, a sealing groove is provided on the bottom of the large end of the countersunk through hole, an O-ring is installed in the sealing groove, and a flange is provided at one end of the transmission chamber away from the sealing chamber, and the flange is used to press the O-ring into the sealing groove.

[0009] Preferably, a slide groove is provided on the side wall of the transmission compartment along the axial direction thereof, a slider is fixed on the nut, and the slider is slidably installed in the slide groove.

[0010] Preferably, a limiting groove is provided on the cover plate, and a threaded through hole is provided on the side wall of the cylinder cover close to the transmission compartment. A limiting bolt is screwed into the threaded through hole, and the limiting bolt is used to be inserted into the limiting groove.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] After the square block enters the receiving groove from the square hole, it is rotated to clamp the square block under the cover plate, and then the piston is pulled by the square block to absorb the sample water. When the sampling is completed, the square block is rotated in the opposite direction to withdraw it from the square hole, and the sampling chamber with the sample taken can be quickly disassembled, and finally a new sampling chamber is replaced to repeat the above operation for re-sampling. The operation is simple and the work efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0015] Figure 3 Schematic diagram of the installation structure of the piston;

[0016] Figure 4 It is a schematic diagram of the installation structure of the square block;

[0017] Figure 5 for Figure 2 A local enlarged schematic diagram of the middle A;

[0018] Figure 6 It is a structural schematic diagram of the piston;

[0019] In the figure, 1-sealing chamber, 2-transmission chamber, 3-sampling cylinder, 4-driving motor, 5-piston, 6-accommodating groove, 7-square block, 8-limiting block, 9-cover plate, 10-square hole, 11-screw, 12-guide rod, 13-nut, 14-bearing seat, 15-slide groove, 16-slider, 17-limiting groove, 18-threaded through hole, 19-countersunk through hole, 20-sealing groove, 21-flange, 22-coupling. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] like Figure 1-6As shown, a water quality sampler comprises a sealing chamber 1, a transmission chamber 2 and a sampling tube 3. The sealing chamber 1 and the sampling tube 3 are detachably connected through the transmission chamber 2. The transmission chamber 2 is screwed on the sealing chamber 1, and the sampling tube 3 is pressed against the transmission chamber 2. A water inlet is provided on the tube cover of the sampling tube 3, and the water inlet is far away from the transmission chamber 2. A driving motor 4, a control circuit board and a battery are installed in the sealing chamber 1. The control circuit board is used to start and stop the driving motor 4, and the battery is used to provide power (the control circuit board and the battery are not shown in the figure). The driving motor 4, the control circuit board and the battery are all sealed and installed in the sealing chamber 1. A transmission member is installed in the transmission chamber 2. The rotating shaft of the driving motor 4 is connected to the power input end of the transmission member. A piston 5 is installed in the sampling tube 3. The transmission member is used to push or pull the piston 5 to slide. The piston 5 is provided with a receiving groove 6. A square block 7 is rotatably installed, and the square block 7 rotates forward or reversely through a transmission member. Two limit blocks 8 are fixed on the inner wall of the accommodating groove 6, and the two limit blocks 8 are respectively located on both sides of the square block 7. The limit blocks 8 are used to limit the rotation angle of the square block 7. A cover plate 9 covering the limit blocks 8 is fixed on the piston 5. A square hole 10 connected to the accommodating groove 6 is opened on the cover plate 9. The size of the square hole 10 is adapted to the size of the square block 7. After the square block 7 enters the accommodating groove 6 from the square hole 10, it is rotated, and the square block 7 can be stuck under the cover plate 9. Then, the piston 5 can be pulled by the square block 7 to absorb the sample water. When the sampling is completed, the square block 7 is rotated in the opposite direction to be withdrawn from the square hole 10, and the sampling bin with the sample taken can be quickly disassembled, and finally a new sampling bin is replaced and the above operation is repeated to sample again. The operation is simple and the work efficiency is high.

[0027] In this embodiment, if Figure 2 and 3 As shown, the transmission parts include a screw rod 11, a guide rod 12, a nut 13 and a bearing seat 14. The screw rod 11 is connected to the rotating shaft of the driving motor 4 through a coupling 22. The bearing seat 14 is used to rotatably install the screw rod 11 in the transmission compartment 2. The nut 13 is screwed on the screw rod 11. The square block 7 and the nut 13 are connected through the guide rod 12 that passes through the bearing seat 14. The torsional force generated by the motor can be converted into a push-pull force and transmitted to the piston 5, so that the piston 5 maintains linear motion, avoids rotation during the linear motion, and reduces the wear of the piston 5.

[0028] In this embodiment, if Figure 1 and 2 As shown, the cylinder covers at both ends of the sampling cylinder 3 are detachable, so that the piston 5 can be easily taken out of the sampling cylinder 3 for replacement. At the same time, the sampling cylinder 3 with the cylinder cover removed is more convenient to clean.

[0029] In this embodiment, if Figure 2As shown, a countersunk through hole 19 is provided on the cylinder cover near the transmission chamber 2, and the countersunk through hole 19 is coaxial with the sampling tube 3. A sealing groove 20 is provided on the bottom of the large end of the countersunk through hole 19, and an O-ring is installed in the sealing groove 20. A flange 21 is provided at the end of the transmission chamber 2 away from the sealing chamber 1, and the flange 21 is used to press the O-ring into the sealing groove 20, so that the sampled water source can only enter the sampling tube 3 from the water inlet, so as to prevent the water source from entering the other side of the piston 5 during the rising process of the sampling barrel, resulting in water sources of different depths in the sampling tube 3, affecting the sampling results.

[0030] In this embodiment, if Figure 1 and 2 As shown, a slide groove 15 is opened on the side wall of the transmission compartment 2 along its axial direction, and a slider 16 is fixed on the nut 13. The slider 16 is slidably installed in the slide groove 15 to prevent the torsional force of the motor from being transmitted to the guide rod 12, thereby preventing the guide rod 12 from being twisted and causing the movement of the nut 13 to become stuck, thereby affecting the water extraction efficiency.

[0031] In this embodiment, if Figure 1 and 2 As shown, a limit groove 17 is provided on the cover plate 9, and a threaded through hole 18 is provided on the side wall of the cylinder cover close to the transmission chamber 2. A limit bolt is screwed into the threaded through hole 18, and the limit bolt is used to fit into the limit groove 17 to prevent the piston 5 from rotating when the square block 7 is reversed, so that the square block 7 cannot be aligned with the square hole 10, thereby affecting the disassembly of the sampling chamber.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A water quality sampler, comprising a sealing chamber (1), a transmission chamber (2) and a sampling tube (3), wherein the sealing chamber (1) and the sampling tube (3) are detachably connected via the transmission chamber (2), a water inlet is provided on a tube cover of the sampling tube (3), and the water inlet is away from the transmission chamber (2), a driving motor (4) is installed in the sealing chamber (1), a transmission member is installed in the transmission chamber (2), a rotating shaft of the driving motor (4) is connected to a power input end of the transmission member, a piston (5) is installed in the sampling tube (3), and the transmission member is used to push or pull the piston (5) to slide, characterized in that: The piston (5) is provided with a receiving groove (6), a square block (7) is rotatably installed in the receiving groove (6), the square block (7) is rotated forward or reversely through the transmission member, two limit blocks (8) are fixed on the inner wall of the receiving groove (6), the two limit blocks (8) are respectively located on both sides of the square block (7), the limit blocks (8) are used to limit the rotation angle of the square block (7), and a cover plate (9) covering the limit blocks (8) is fixed on the piston (5), and a square hole (10) connected to the receiving groove (6) is provided on the cover plate (9), and the size of the square hole (10) is adapted to the size of the square block (7).

2. A water sampler according to claim 1, characterized in that: The transmission member comprises a screw rod (11), a guide rod (12), a nut (13) and a bearing seat (14); the screw rod (11) is connected to the rotating shaft of the driving motor (4) through a coupling; the bearing seat (14) is used to rotatably install the screw rod (11) in the transmission bin (2); the nut (13) is screwed on the screw rod (11); the square block (7) and the nut (13) are connected through the guide rod (12) that passes through the bearing seat (14).

3. A water sampler according to claim 1, characterized in that: The barrel covers at both ends of the sampling barrel (3) are detachable.

4. A water sampler according to claim 1, characterized in that: A countersunk through hole (19) is provided on the cylinder cover near the transmission chamber (2), the countersunk through hole (19) being coaxial with the sampling tube (3), a sealing groove (20) is provided on the bottom of the large end of the countersunk through hole (19), an O-ring is installed in the sealing groove (20), and a flange (21) is provided at one end of the transmission chamber (2) away from the sealing chamber (1), the flange (21) being used to press the O-ring into the sealing groove (20).

5. A water sampler according to claim 2, characterized in that: A slide groove (15) is provided on the side wall of the transmission compartment (2) along the axis direction thereof, a slider (16) is fixed on the nut (13), and the slider (16) is slidably installed in the slide groove (15).

6. A water sampler according to claim 2, characterized in that: A limiting groove (17) is provided on the cover plate (9), and a threaded through hole (18) is provided on the side wall of the cylinder cover close to the transmission compartment (2). A limiting bolt is screwed into the threaded through hole (18), and the limiting bolt is used to be inserted into the limiting groove (17).

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