A water quality stratified sampling device

Abstract

The utility model relates to the technical field of water sample collection, in particular to a water quality stratified sampling device; the device can synchronously collect water samples of different depths, is easy to store and carry, is convenient to operate, and has a more reasonable structural layout; the water sample can be adjusted according to actual needs; it includes a plurality of stratified samplers and a plurality of standard connecting rods, and each two adjacent stratified samplers are connected as a whole through the standard connecting rod. The stratified sampler includes a cylinder, a valve plug slidably installed in the cylinder, a driving rod connected as a whole with the valve plug, and a spring sleeved on the driving rod, one end of the spring abuts against the top wall of the cylinder, and the other end of the spring abuts against the upper part of the valve plug. A water inlet pipe connected with the inside of the cylinder is provided on the upper part of the cylinder, and the valve plug blocks the connection between the water inlet pipe and the cylinder. A drainage pipe connected with the bottom of the cylinder is provided at the bottom of the cylinder, and a switch valve is installed on the drainage pipe. The driving rod passes through the top and bottom of the cylinder, and the driving rods on each two adjacent stratified samplers are threaded at the head and tail.

Description

Technical Field

[0001] The utility model relates to the technical field of water sample collection, in particular to a water quality stratified sampling device. Background Art

[0002] As we all know, in the process of water quality testing and analysis, water quality is significantly correlated with water depth. Generally speaking, when sampling water quality surveys in rivers, lakes and reservoirs, different sections and depths must be collected. Water quality varies greatly at different depths and sampling times; most existing water quality sampling devices have inaccurate sampling depths and cannot collect water samples at different depths at the same time, which interferes with the simultaneous analysis of the quality of water samples at different depths; for this reason, some water sample collection devices have been improved.

[0003] For example, a Chinese utility model patent discloses a water quality stratified sampler for water environment monitoring (publication (announcement) number CN219495767U), including a sampling tube, wherein multiple layers of sampling space are arranged from top to bottom in the sampling tube, a water outlet is arranged on the lower side of each layer of the sampling space, a water inlet is arranged on the upper side of each layer of the sampling space, and a hole plug is arranged at the water inlet. A control unit is arranged in the sampling tube, and through the stratified design of the sampling tube from top to bottom, water layers of different depths can be sampled at one time, which is convenient and quick. Then, through the control unit in the sampling tube and the hole plug design of the water inlet, the water inlet can be opened and closed at the same time after the sampling tube is placed in the sampling water layer, so as to sample and collect water quality, thereby avoiding the low efficiency of multiple sampling through water bottles in the prior art, and the confusion of water layers and inaccurate sampling data caused in multiple sampling.

[0004] However, when the inventor implemented this device, he found the following defects: although the above device can realize water sampling of water layers at different depths, it uses complex electronic control components. The electronic control components are built into the water and need to be sealed and waterproofed. They are easily damaged after long-term use, which increases the investment cost and subsequent maintenance cost of the device. It is large in size and not easy to carry. The maximum depth of water sampling is limited by the length of the sampling tube, and there are certain limitations in use. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a water quality stratified sampling device which can simultaneously collect water samples at different depths, is easy to store and carry, is convenient to operate, and has a more reasonable structural layout; and can adjust the sampling limit depth of water samples according to actual needs.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a water quality stratified sampling device, comprising a plurality of stratified samplers and a plurality of standard connecting rods, wherein each two adjacent stratified samplers are connected as a whole through a standard connecting rod, the stratified sampler comprises a cylinder, a valve plug slidably installed in the cylinder, a driving rod connected as a whole with the valve plug, and a spring sleeved on the driving rod, wherein one end of the spring abuts against the top wall in the cylinder, and the other end of the spring abuts against the upper part of the valve plug, the upper part of the cylinder is provided with a water inlet pipe connected with the inside of the cylinder, the valve plug blocks the connection between the water inlet pipe and the cylinder, and the A drainage pipe connected to the inner bottom of the cylinder is provided at the bottom of the cylinder, and a switch valve is installed on the drainage pipe. The driving rod passes through the top and bottom of the cylinder, and the driving rods on each two adjacent stratified samplers are threadedly connected at the head and tail; further, the two ends of the standard connecting rod are detachably connected to the corresponding stratified samplers by bolts; a sealing structure is provided at the connection between the driving rod and the top and bottom of the cylinder, and the sealing structure can adopt a rubber ring or other equivalent parts with a sliding sealing effect; the length of the standard connecting rod can be 0.5m or 1m, and the length of the standard connecting rod can be adaptively adjusted according to the water sample collection depth requirements.

[0009] Preferably, it also includes a standard floating platform, and the stratified sampler is detachably connected to the standard floating platform via a standard connecting rod; further, both ends of the standard connecting rod are provided with threaded parts, and the standard connecting rod is threadedly connected to the standard floating platform or the stratified sampler.

[0010] Preferably, it also includes a plurality of connecting hoses, one ends of which are respectively connected to the interior of the drainage pipes on the plurality of stratified samplers, and the other ends of the plurality of connecting hoses pass through the standard floating platform and extend from the top surface of the standard floating platform; further, the ports of the plurality of connecting hoses at the standard floating platform can be connected to an external water pump, etc.

[0011] Preferably, a filter screen cover is detachably mounted at the port of the water inlet pipe.

[0012] Preferably, it also includes a hand-cranked roller rotatably mounted on the standard floating platform and a pull rope sleeved on the hand-cranked roller, wherein the pull rope is connected to the top of a driving rod on a group of stratified samplers close to the standard floating platform.

[0013] Preferably, a tether ring is installed on the standard floating platform.

[0014] Preferably, the number of standard connecting rods connecting two adjacent multi-layer samplers is at least two.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a water quality stratified sampling device, which has the following beneficial effects: the water quality stratified sampling device selects a standard connecting rod of corresponding length and a corresponding number of multi-layer samplers according to the water depth and sampling quantity requirements of the multi-layer water sample, connects multiple multi-layer samplers to each other through the standard connecting rod and then places them in the water area to be sampled, pulls the driving rod on the upper group of multi-layer samplers to move the pistons in each multi-layer sampler upward, the pistons are separated from the blockage at the water inlet pipe, and the water samples of the corresponding water layers enter the corresponding cylinder through the water inlet pipe, releases the driving rod, and under the action of the spring, the piston is reset to re-block the water inlet pipe, lifts the device from the water surface, opens the switch valve, and collects the water samples at the drain pipe; can collect water samples of different depths simultaneously, is easy to store and carry, is convenient to operate, and has a more reasonable structural layout; can adjust the sampling limit depth of water samples according to actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0019] Figure 3 The utility model Figure 2 Schematic diagram of the cross-section structure at AA in the middle;

[0020] Figure 4 The utility model Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0021] Figure 5 The utility model Figure 3 A schematic diagram of the partially enlarged structure at B in the middle;

[0022] Markings in the attached figure: 1. standard connecting rod; 2. cylinder; 3. valve plug; 4. driving rod; 5. spring; 6. water inlet pipe; 7. drain pipe; 8. switch valve; 9. standard floating platform; 10. connecting hose; 11. filter screen cover; 12. hand roller; 13. pull rope; 14. rope ring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-5The utility model discloses a water quality stratified sampling device, comprising a plurality of stratified samplers and a plurality of standard connecting rods 1, wherein each two adjacent stratified samplers are connected as a whole through the standard connecting rod 1, the stratified sampler comprises a cylinder 2, a valve plug 3 slidably installed in the cylinder 2, a driving rod 4 connected as a whole with the valve plug 3, and a spring 5 sleeved on the driving rod 4, one end of the spring 5 abuts against the inner top wall of the cylinder 2, and the other end of the spring 5 abuts against the upper part of the valve plug 3, a water inlet pipe 6 communicating with the inside of the cylinder 2 is provided at the upper part of the cylinder 2, the valve plug 3 blocks the connection between the water inlet pipe 6 and the cylinder 2, a drain pipe 7 communicating with the inner bottom of the cylinder 2 is provided at the bottom of the cylinder 2, a switch valve 8 is installed on the drain pipe 7, and the driving rod 4 is provided with a valve plug 3. The driving rod 4 passes through the top and bottom of the cylinder 2, and the end to end threads are connected on each adjacent stratified sampler; further, the two ends of the standard connecting rod 1 are detachably connected to the corresponding stratified samplers by bolts; a sealing structure is provided at the connection between the driving rod 4 and the top and bottom of the cylinder 2, and the sealing structure can adopt a rubber ring or other equivalent parts with a sliding sealing effect; the length of the standard connecting rod 1 can be 0.5m or 1m, and the length of the standard connecting rod 1 can be adaptively adjusted according to the depth requirements of water sample collection; the number of multi-layer samplers and standard connecting rods 1 can be adaptively selected to meet the requirements of stratified sampling of water samples at multiple water depths, and when not in use, the stratified samplers can be detached from each other and stored.

[0025] Specifically, it also includes a standard floating platform 9, and the stratified sampler is detachably connected to the standard floating platform 9 through a standard connecting rod 1; further, both ends of the standard connecting rod 1 are provided with threaded parts, and the standard connecting rod 1 is threadedly connected to the standard floating platform 9 or the stratified sampler; the standard floating platform 9 is preferably a foam board or other board with a good floating effect. The standard floating platform 9 floats on the water surface. At this time, the bottom end face of the standard floating platform 9 is the zero scale of the water surface, and the length of the standard connecting rod 1 is the stratified water depth, so that the zero scale can be controlled more accurately, and the stratified sampling device can be moved more conveniently according to the sampling position requirements.

[0026] Specifically, it also includes a plurality of connecting hoses 10, one ends of the plurality of connecting hoses 10 are respectively connected to the inside of the drainage pipes 7 on the plurality of stratified samplers, and the other ends of the plurality of connecting hoses 10 pass through the standard floating platform 9 and extend from the top surface of the standard floating platform 9; further, the ports of the plurality of connecting hoses 10 at the standard floating platform 9 can be connected to an external water pump, etc.; when a large number of continuous sampling of water samples of different water depths is required, the valve plug 3 is always in a disengaged state from the water inlet pipe 6, and the external water pump draws water from the corresponding connecting hose 10, thereby continuously and massively sampling the water in the stratified samplers located in water layers of different depths, and the water samples drawn out by the water pump are collected, so as to improve the convenience of continuous and massive sampling of water samples of different water depths.

[0027] Specifically, a filter screen cover 11 is detachably installed at the port of the water inlet pipe 6; the filter screen cover 11 can filter the water sample entering the cylinder 2 to prevent debris from entering the cylinder 2, thereby ensuring the cleanliness of the water sample and preventing debris from accumulating in the cylinder 2 or at the water inlet pipe 6.

[0028] Specifically, it also includes a hand-cranked roller 12 rotatably installed on the standard floating platform 9 and a pull rope 13 sleeved on the hand-cranked roller 12, the pull rope 13 is connected to the top of a driving rod 4 on a group of stratified samplers close to the standard floating platform 9; by rotating the hand-cranked roller 12, the corresponding driving rod 4 is pulled upward, and the driving rod 4 can be pulled upward more labor-savingly, further improving the convenience of operation.

[0029] Specifically, a tying rope ring 14 is installed on the standard floating platform 9; one end of the rope can be hung on the tying rope ring 14, and the operator holds the other end of the rope to make the standard floating platform 9 float freely on the water surface, preventing the standard floating platform 9 from escaping from the operator's control and drifting to a distant area of ​​the water.

[0030] Specifically, the number of standard connecting rods 1 connecting two adjacent multi-layer samplers is at least two; through the above arrangement, the connection stability between the two adjacent multi-layer samplers can be improved, and the standard connecting rod 1 can be prevented from rotating relative to the multi-layer sampler.

[0031] When in use, according to the water depth and sampling quantity requirements of the multi-layer water samples, a standard connecting rod 1 of corresponding length and a corresponding number of multi-layer samplers are selected, and multiple multi-layer samplers are connected to each other through the standard connecting rod 1 and then placed in the water area to be sampled. The uppermost standard connecting rod 1 is fixedly connected to the standard floating platform 9, and the pull rope 13 is wound around the hand-cranked roller 12 by rotating the hand-cranked roller 12. After being driven by the driving rod 4, the piston moves upward, and the piston disengages from the blockage at the water inlet pipe 6. The water sample of the corresponding water layer enters the corresponding cylinder 2 through the water inlet pipe 6, and the external water pump is started to continuously extract the water sample of the corresponding water layer.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A water quality stratified sampling device, characterized in that: The invention comprises a plurality of stratified samplers and a plurality of standard connecting rods (1), wherein two adjacent stratified samplers are connected in one piece via the standard connecting rod (1), the stratified samplers comprising a cylinder (2), a valve plug (3) slidably mounted in the cylinder (2), a driving rod (4) connected in one piece with the valve plug (3), and a spring (5) sleeved on the driving rod (4), one end of the spring (5) abutting against the inner top wall of the cylinder (2), and the other end of the spring (5) abutting against the upper part of the valve plug (3), the upper part of the cylinder (2) is provided with a water inlet pipe (6) communicating with the inside of the cylinder (2), the valve plug (3) blocks the connection between the water inlet pipe (6) and the cylinder (2), the bottom of the cylinder (2) is provided with a drainage pipe (7) communicating with the inner bottom of the cylinder (2), a switch valve (8) is mounted on the drainage pipe (7), the driving rod (4) passes through the top and bottom of the cylinder (2), and the driving rods (4) on two adjacent stratified samplers are threadedly connected at the head and tail.

2. The water quality stratified sampling device according to claim 1, characterized in that: It also comprises a standard floating platform (9), and the stratified sampler is detachably connected to the standard floating platform (9) via a standard connecting rod (1).

3. The water quality stratified sampling device according to claim 2, characterized in that: It also includes a plurality of connecting hoses (10), one end of each of which is connected to the inside of the drainage pipes (7) on the plurality of stratified samplers, and the other end of each of which passes through the standard floating platform (9) and extends out from the top surface of the standard floating platform (9).

4. The water quality stratified sampling device according to claim 1 or 3, characterized in that: A filter screen cover (11) is detachably mounted at the end of the water inlet pipe (6).

5. The water quality stratified sampling device according to claim 1 or 3, characterized in that: It also includes a hand-cranked roller (12) rotatably mounted on the standard floating platform (9) and a pull rope (13) sleeved on the hand-cranked roller (12), wherein the pull rope (13) is connected to the top of a driving rod (4) on a group of stratified samplers close to the standard floating platform (9).

6. The water quality stratified sampling device according to claim 2, characterized in that: A tether ring (14) is installed on the standard floating platform (9).

7. The water quality stratified sampling device according to claim 1, characterized in that: The number of the standard connecting rods (1) connecting two adjacent multi-layer samplers is at least two.

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