Rapid and automatic sampling and sample reserving device for water quality

Abstract

The utility model discloses a water quality rapid automatic sampling and sample reserving device which comprises a sample reserving bottle, an upper end cover and a lower end cover, the upper end cover and the lower end cover are respectively installed at the upper end and the lower end of the sample reserving bottle in a sealing mode, a water inlet pipe penetrates through the middle of the lower end cover, and an exhaust pipe penetrates through the middle of the upper end cover. The water inlet pipe is provided with an electromagnetic valve used for controlling a passage of the water inlet pipe, the control end of the electromagnetic valve is connected with a control line used for controlling starting and stopping of the electromagnetic valve, the control line is in control connection with an external control component, one side of the end face of the upper end cover is fixedly connected with a rope used for dragging a device, and a one-way exhaust valve is arranged in the exhaust pipe. The water quality sampling device is ingenious in overall structural design, the water quality sampling device can be randomly put in a sampling area according to water quality detection and collection requirements, the time length of delayed closing of the electromagnetic valve is set, the sinking depth of the device in a water body can be flexibly adjusted, the water quality of the water bodies at different depths can be rapidly and automatically sampled, and the applicability of the water quality sampling device is greatly improved.

Description

Technical Field

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

[0002] At present, in the process of online monitoring of water quality, sampling and retention of samples mainly adopts the method of extracting water samples into sampling and retention bottles by sampling pumps, or adopts manual sampling. On the one hand, manual sampling is mostly used in the process of manual water quality testing sampling, and it is impossible to do remote and immediate sampling, and the timeliness is poor. The sampling pump needs to be equipped with a power source, and the connecting pipes between the sampling and retention bottles and the sampling pump need regular maintenance; on the other hand, the sampling pump mostly adopts a peristaltic pump, and the sampling process is slow, and it is difficult to effectively sample small-flow polluted water bodies.

[0003] In view of the defects faced by water quality sampling in the above-mentioned prior art, we have designed a water quality rapid automatic sampling and sample retention device to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art, such as poor immediacy of manual sampling, complex equipment and maintenance of conventional power sampling systems, and slow sampling speed, and to propose a water quality fast automatic sampling and retention device, which realizes fast automatic sampling through a uniquely designed solenoid valve and exhaust pipe.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A water quality rapid automatic sampling and sample retention device comprises a sample retention bottle, an upper end cover and a lower end cover, wherein the upper end cover and the lower end cover are respectively sealed and installed on the upper and lower ends of the sample retention bottle, a water inlet pipe is penetrated through the middle of the lower end cover, an exhaust pipe is penetrated through the middle of the upper end cover, a solenoid valve for controlling the water inlet pipe passage is installed on the water inlet pipe, a control end of the solenoid valve is connected to a control line for controlling the start and stop of the solenoid valve, and the control line establishes a control connection with an external control component, a rope for a towing device is fixedly connected to one side of the end surface of the upper end cover, and a one-way exhaust valve is arranged inside the exhaust pipe.

[0007] As a further preferred solution of the utility model, an exhaust filter is provided in the exhaust pipe near the end of the pipe opening, and a water inlet filter is provided in the water inlet pipe near the end of the pipe opening.

[0008] As a further preferred solution of the utility model, the sample retaining bottle adopts a cylindrical structure with a cylindrical cavity inside, and external sealing thread rings are provided on the outer surfaces of the upper and lower ports of the sample retaining bottle.

[0009] As a further preferred solution of the utility model, a water inlet is provided at the junction of the lower end cover and the water inlet pipe, an internal thread sealing ring is provided on the inner side of the upper part of the lower end cover, and the internal thread sealing ring is threadedly sealed with the external sealing thread ring.

[0010] As a further preferred solution of the utility model, the interior of the circumferential wall of the lower end cover is arranged as a hollow containing chamber, and a substance with a density greater than that of water is placed in the containing chamber.

[0011] As a further preferred solution of the utility model, the main structure of the solenoid valve is made of stainless steel or copper metal, and the sample bottle, the upper end cover and the lower end cover are made of plastic material.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the overall structural design of the utility model is ingenious, and it can be placed in the sampling area at will according to the needs of water body detection. Through the electromagnetic valve, water inlet pipe and exhaust pipe configured on the sample bottle, the opening and closing of the electromagnetic valve can be remotely controlled by wire, and the delay closing time of the electromagnetic valve can be flexibly set according to the sampling volume, so as to realize rapid and automatic sampling of water quality, and effectively solve the problems of poor immediacy of manual sampling, complex equipment and maintenance of conventional power sampling systems, and slow sampling speed. The utility model is provided with a hollow storage bin inside the circumferential wall of the lower end cover, and the weight of the material configured in the storage bin is adjusted according to the water quality sampling requirements, so that the sinking depth of the device in the water body can be flexibly adjusted to collect water quality of water bodies at different depths, which greatly improves the applicability of the utility model, and is particularly suitable for rapid sampling and retention of samples in regulated water bodies such as wastewater and surface water. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the appearance of a water quality rapid automatic sampling and sample retention device proposed by the utility model;

[0014] Figure 2 This is a front cross-sectional schematic diagram of a water quality rapid automatic sampling and sample retention device proposed by the utility model;

[0015] Figure 3 This is a schematic diagram of the sample retaining bottle structure of a water quality rapid automatic sampling and retaining device proposed by the utility model;

[0016] Figure 4 The utility model discloses a schematic diagram of the structure of the lower end cover of a water quality rapid automatic sampling and sample retention device.

[0017] The numbers in the figure are: 10, sample bottle; 11, upper end cover; 12, lower end cover; 13, water inlet pipe; 14, exhaust pipe; 15, solenoid valve; 16, control line; 17, rope; 18, one-way exhaust valve; 19, exhaust filter; 20, water inlet filter; 21, containing chamber; 22, external sealing thread ring; 23, water inlet; 24, internal thread sealing ring. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] like Figure 1-4 As shown, a water quality rapid automatic sampling and sample retention device proposed in this embodiment includes a sample retention bottle 10, an upper end cover 11 and a lower end cover 12. The upper end cover 11 and the lower end cover 12 are respectively installed on the upper and lower ends of the sample retention bottle 10 in a sealed connection manner, so that the sample retention bottle 10 becomes a sealed tank structure that can hold liquid. Specifically, the sample retention bottle 10 adopts a cylindrical structure with a cylindrical chamber inside, and an external sealing thread ring 22 is provided on the outer surface of the upper and lower ports of the sample retention bottle 10. A water inlet 23 is provided at the junction of the lower end cover 12 and the water inlet pipe 13, and an internal thread sealing ring 24 is provided on the inner side of the upper part of the lower end cover 12, and the internal thread sealing ring 24 is threadedly and sealedly connected with the external sealing thread ring 22.

[0020] In order to achieve the purpose of sampling and retaining water quality, a water inlet pipe 13 is provided through the middle of the lower end cover 12, and the liquid water quality to be sampled enters the sample bottle 10 through the water inlet pipe 13. Based on the physical principle: when the liquid enters the sample bottle 10, the gas inside the sample bottle 10 needs to be discharged out of the bottle. Therefore, an exhaust pipe 14 is provided through the middle of the upper end cover 11. By setting the exhaust pipe 14, when the liquid water quality enters the sample bottle 10 through the water inlet pipe 13, the air in the sample bottle 10 is discharged out of the bottle.

[0021] In order to prevent impurities in the water from entering the sample bottle 10, in this embodiment, an exhaust filter 19 is arranged in the tube near the end of the exhaust pipe 14, and a water inlet filter 20 is arranged in the tube near the end of the water inlet pipe 13. Through the arrangement of the exhaust filter 19 and the water inlet filter 20, solid impurities in the water can be effectively filtered out during water sampling, thereby preventing solid impurities in the water from entering the sample bottle 10 and affecting the sampling and retaining operation.

[0022] In order to control the sampling process in this embodiment, a solenoid valve 15 for controlling the passage of the water inlet pipe 13 is installed on the water inlet pipe 13. The opening and closing of the solenoid valve 15 can control the smoothness and disconnection of the water inlet pipe 13, thereby controlling the water quality sampling time node of the sample bottle 10. In addition, the control end of the solenoid valve 15 is connected to a control line 16 for controlling the start and stop of the solenoid valve 15. The control line 16 establishes a control connection with an external control component. The external control component can be set in a remote control room. By setting a fixed-point sampling time on the external control component, the solenoid valve 15 is automatically opened to realize the automatic and rapid water quality sampling task of the device. The solenoid valve 15 is a normally closed solenoid valve. Under normal circumstances, when the device is put into the water body, the lower water inlet pipe 13 is in a closed state. The solenoid valve 15 is opened after receiving the power-on control signal sent by the external control component, and the water body quickly enters the sample bottle 10 through the water inlet pipe 13. The solenoid valve 15 has a delayed closing function, and the default time is 30 seconds. The delay closing time can also be flexibly set according to the sampling amount.

[0023] A rope 17 for dragging the device is fixedly connected to one side of the end surface of the upper end cover 11. The rope 17 can be used to launch and lift the device, and the rope 17 can also be used to bind the device to a fixed position to sample the water quality at a specific position.

[0024] In order to prevent liquid water from entering the sample bottle 10 through the exhaust pipe 14, a one-way exhaust valve 18 is provided in the exhaust pipe 14 in the present embodiment. The one-way exhaust valve 18 is a one-way air valve, which can only allow the gas in the sample bottle 10 to be discharged to the outside of the sample bottle 10 under the action of the water pressure, while isolating the liquid water outside the sample bottle 10 from entering the sample bottle 10 from the exhaust pipe 14.

[0025] It is worth mentioning that in this embodiment, in order to keep the device stable when it is put into the sampling liquid, ensure that the water inlet pipe 13 is downward and the exhaust pipe 14 is above the device, the main structure of the solenoid valve 15 is made of stainless steel or copper metal, and the sample bottle 10, the upper end cover 11 and the lower end cover 12 are made of plastic. First, the sample bottle 10, the upper end cover 11 and the lower end cover 12 are made of plastic material to meet the needs of collecting water quality, and the transparency of the plastic material can also intuitively observe the sampling amount of the water quality in the sample bottle 10.

[0026] In particular, in this embodiment, the inner part of the circumferential wall of the lower end cover 12 is set as a hollow storage bin 21, and a material with a density greater than that of water, such as fine sand or other liquid materials, is placed in the storage bin 21. When the sample bottle 10 is put into the water body, since the sample bottle 10 has not yet started the water quality sampling operation, there is air inside the sample bottle 10, which brings a certain buoyancy to the device, making it possible for the device to float. Once the device floats, it will cause the device to tilt or lie flat on the water surface, which brings many inconveniences to the water quality sampling work. Therefore, a storage bin 21 that can add extra weight to the device is opened inside the lower end cover 12. According to the water quality sampling requirements, the weight of the material in the storage bin 21 is adjusted to achieve the sinking depth of the device in the water body. Its principle is similar to that of a fishing float, and the added extra weight is similar to the plumb bob under the float.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A water quality rapid automatic sampling and sample retention device, comprising a sample retention bottle (10), an upper end cover (11) and a lower end cover (12), wherein the upper end cover (11) and the lower end cover (12) are respectively sealed and installed at the upper and lower ends of the sample retention bottle (10), characterized in that: A water inlet pipe (13) is provided through the middle of the lower end cover (12), an exhaust pipe (14) is provided through the middle of the upper end cover (11), a solenoid valve (15) for controlling the passage of the water inlet pipe (13) is installed on the water inlet pipe (13), a control line (16) for controlling the start and stop of the solenoid valve (15) is connected to the control end of the solenoid valve (15), and the control line (16) is connected to an external control component, a wire rope (17) for a towing device is fixedly connected to one side of the end surface of the upper end cover (11), and a one-way exhaust valve (18) is provided inside the exhaust pipe (14).

2. A water quality rapid automatic sampling and sample retention device according to claim 1, characterized in that: An exhaust filter (19) is arranged in the exhaust pipe (14) near the end of the pipe opening, and an inlet filter (20) is arranged in the water inlet pipe (13) near the end of the pipe opening.

3. A water quality rapid automatic sampling and sample retention device according to claim 1, characterized in that: The sample retaining bottle (10) adopts a cylindrical structure with a cylindrical cavity inside, and external sealing thread rings (22) are provided on the outer surfaces of the upper and lower ports of the sample retaining bottle (10).

4. A water quality rapid automatic sampling and sample retention device according to claim 3, characterized in that: A water inlet (23) is provided at the joint between the lower end cover (12) and the water inlet pipe (13), and an internal thread sealing ring (24) is provided on the inner side of the upper portion of the lower end cover (12), wherein the internal thread sealing ring (24) is thread-sealedly connected to the external sealing thread ring (22).

5. A water quality rapid automatic sampling and sample retention device according to claim 1, characterized in that: The interior of the circumferential wall of the lower end cover (12) is provided with a hollow containing chamber (21).

6. A water quality rapid automatic sampling and sample retention device according to claim 1, characterized in that: The main structure of the solenoid valve (15) is made of stainless steel or copper metal, and the sample retention bottle (10), the upper end cover (11) and the lower end cover (12) are made of plastic material.

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