Automatic sampling and storing equipment for water pollutant detection

Abstract

The utility model discloses a water quality pollutant detection automatic sampling storage device, which comprises a sample storage tank, the top of the sample storage tank is fixedly provided with an elastic sealing film through a sealing cover, the upper part of the sealing cover is connected with a mooring cable, the inner bottom of the sample storage tank is fixedly provided with a fixed threaded bolt, and the fixed threaded bolt is connected with the elastic sealing film. And a thread feeding rod which feeds through threads is installed on the fixed threaded bolt, a positioning seat is fixedly pasted to the top of the thread feeding rod, and a membrane breaking needle is arranged above the positioning seat. The device can be operated by being held by a user, has the advantages of simple structure, low cost and simplicity in operation, and can be used for collecting a water pollution sample at a fixed depth and sealing the sample for subsequent research after the sample is collected; the device is provided with a counterweight, so that the stability of the whole structure is improved, and the sampling stability can be kept in a water body with undercurrent, so that the sampling accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the field of water quality detection equipment, in particular to automatic sampling and storage equipment for detecting water pollutants. Background Art

[0002] With the increasingly stringent environmental regulations and the improvement of public environmental awareness, water quality monitoring has become an important part of environmental protection. In water quality monitoring, the detection of water pollutants is a key task, which can help us understand the pollution status of water bodies and provide a scientific basis for water quality management and governance.

[0003] For example, the Chinese patent with application number: CN202322081802.7 has the following specific contents: A water sampling device. The utility model includes a water sampling tank and a pull rope, the port of the water sampling tank is plugged with a stopper, the pull rope is used to pull the water sampling tank, the stopper is fixedly equipped with a traction rope, the side wall of the water sampling pipe is provided with a positioning device for supporting the water sampling tank, the upper end of the water sampling tank is fixedly equipped with a slide rod, and the stopper slides vertically on the surface of the slide rod. The above patent is a common device for water sampling.

[0004] This prior art also has the following problems when used:

[0005] The above patented equipment has a complex structure, high cost, and is difficult to operate, which is not conducive to large-scale application. At the same time, it is unable to accurately collect and preserve water samples at a fixed depth, which brings difficulties to the stratified research of water pollution. Utility Model Content

[0006] The purpose of the utility model is to provide an automatic sampling and preservation device for water pollutant detection, so as to solve the problems existing in the existing water pollution sampling equipment, such as complex structure, high cost, difficult operation, not conducive to large-scale application, and inability to accurately carry out fixed-depth water sample collection and preservation operations, which brings difficulties to the stratified research of water pollution.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] An automatic sampling and preservation device for detecting water pollutants comprises a sample storage tank, an elastic sealing membrane is fixedly provided on the top of the sample storage tank via a sealing cover, the top of the sealing cover is connected to a tethering cable, a fixed threaded bolt is fixedly provided on the bottom of the sample storage tank, a threaded feed rod for threaded feeding is installed on the fixed threaded bolt, a positioning seat is fixedly adhered to the top of the threaded feed rod, and a membrane rupturing needle is provided above the positioning seat.

[0009] As a preferred technical solution of the utility model, an anti-overflow arc top is arranged inside the sample storage tank, and a through hole is arranged at the center of the anti-overflow arc top for the membrane rupturing needle to pass through.

[0010] As a preferred technical solution of the utility model, a weight ball is welded at the bottom of the threaded feed rod, and the weight ball is made of stainless steel.

[0011] As a preferred technical solution of the utility model, the sealing cover includes a ring cover which is detachably screwed to the sample storage tank by a thread, and four equidistantly distributed mooring frames are arranged above the ring cover. Connecting ropes are installed on the mooring frames, and the top of each connecting rope is connected to a hanging block, and the hanging block is fixedly connected to the mooring cable.

[0012] As a preferred technical solution of the utility model, a sealing gasket is provided between the ring cover and the sample storage tank.

[0013] As a preferred technical solution of the present utility model, the tethered cable includes a cable body, and a ruler is formed on the cable body.

[0014] As a preferred technical solution of the utility model, the scale is a fluorescent strip.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The device can be operated by a user by hand, and has the advantages of simple structure, low cost, and easy operation. It can collect water pollution samples at a fixed depth, and seal the samples after collection for subsequent research.

[0017] The device itself is provided with a counterweight, which improves the stability of the overall structure and can maintain stability during sampling in water bodies with undercurrents, thereby improving the accuracy of sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional structural diagram of an automatic sampling and storage device for water quality pollutant detection according to the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the sample storage tank of the automatic sampling and storage device for water quality pollutant detection of the utility model;

[0020] Figure 3 It is an enlarged schematic diagram of the sealing cover of the automatic sampling and storage device for water quality pollutant detection of the utility model;

[0021] Figure 4 It is an enlarged schematic diagram of the mooring cable of the automatic sampling and storage device for water pollutant detection of the utility model.

[0022] In the figure: 1. Sample storage tank; 2. Sealing cover; 3. Mooring cable; 4. Elastic sealing membrane; 5. Threaded feed rod; 6. Counterweight ball; 7. Fixed threaded bolt; 8. Positioning seat; 9. Membrane rupture needle; 10. Anti-overflow arc top; 201. Ring cover; 202. Sealing gasket; 203. Mooring rack; 204. Connecting rope; 205. Hanging block; 301. Cable body; 302. Ruler. DETAILED DESCRIPTION

[0023] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 an indirect connection 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 by specific circumstances.

[0025] 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.

[0026] See also Figure 1-2The utility model includes a sample storage tank 1, a top of which is fixedly provided with an elastic sealing membrane 4 through a sealing cover 2, the top of the sealing cover 2 is connected to a mooring cable 3, a fixed threaded bolt 7 is fixedly provided at the bottom of the sample storage tank 1, a threaded feeding rod 5 for threaded feeding is installed on the fixed threaded bolt 7, a positioning seat 8 is fixedly adhered to the top of the threaded feeding rod 5, and a membrane rupturing needle 9 is provided above the positioning seat 8.

[0027] like Figure 2 The sample storage tank 1 is provided with an anti-overflow arc top 10, and a through hole is provided at the center of the anti-overflow arc top 10 for the membrane rupturing needle 9 to pass through;

[0028] This arrangement can utilize the overflow arc top 10 to prevent the water sample entering between the sample storage tank 1 and the overflow arc top 10 from being exchanged with the external water sample when recovering the water sample, thereby improving the sampling accuracy.

[0029] like Figure 1 A weight ball 6 is welded at the bottom of the threaded feed rod 5, and the weight ball 6 is made of stainless steel;

[0030] This arrangement makes it convenient for the user to drive the threaded feed rod 5 to rotate through the counterweight ball 6, thereby adjusting the height of the membrane-breaking needle 9 according to the depth to be sampled, so that under the action of water pressure at a specific depth, the elastic sealing membrane 4 is destroyed by the membrane-breaking needle 9, thereby collecting water samples at a specific depth. At the same time, the counterweight ball 6 can play the role of a counterweight, thereby improving the stability of the device during sampling and avoiding sampling failure caused by shaking in the water.

[0031] like Figure 3 The cover 2 includes a ring cover 201 which is detachably screwed to the sample storage tank 1 through a thread, and four equally spaced mooring frames 203 are arranged above the ring cover 201. The mooring frames 203 are equipped with connecting ropes 204. The top of each connecting rope 204 is connected to a hanging block 205, and the hanging block 205 is fixedly connected to the mooring cable 3;

[0032] This arrangement facilitates the fixing and connecting of the mooring cable 3 and the cover 2 together through the mooring frame 203, the connecting rope 204 and the hanging block 205, and the depth of the device can be controlled through the mooring cable 3.

[0033] like Figure 3 A sealing gasket 202 is provided between the ring cover 201 and the sample storage tank 1;

[0034] This arrangement can improve the sealing between the ring cover 201 and the sample storage tank 1, and prevent water from entering between the ring cover 201 and the sample storage tank 1 when the device has not sunk to a specific depth, resulting in water pressure balance on the upper and lower sides of the elastic sealing membrane 4, thereby ensuring that the elastic sealing membrane 4 will be destroyed by the membrane-breaking needle 9 only under the action of a specific water pressure, thereby collecting water samples at a specific depth.

[0035] like Figure 4 , the mooring cable 3 includes a cable body 301, and a scale 302 is formed on the cable body 301;

[0036] This arrangement facilitates the use of the scale 302 on the cable body 301 to assist the staff in determining the sampling depth and improve the sampling accuracy through cross-comparison.

[0037] like Figure 4 , the scale 302 is a fluorescent bar;

[0038] This arrangement makes it convenient to use the device for sample collection at night.

[0039] Specific working principle:

[0040] When using the device to perform water pollutant sampling, firstly, the threaded connection between the cover 2 and the sample storage tank 1 is used to tightly fix the elastic sealing membrane 4 between the sample storage tank 1 and the cover 2, so that the elastic sealing membrane 4 tightly covers the surface of the sample storage tank 1, and according to the depth of the water body to be sampled, the threaded feed rod 5 is turned to adjust the height of the membrane rupture needle 9, and then the user holds the mooring cable 3. As the mooring cable 3 is continuously extended, the device can stably dive to a specific depth under the counterweight provided by the counterweight ball 6. At this time, the water pressure at this depth acts on the surface of the elastic sealing membrane 4, making the elastic sealing membrane 4 tightly cover the surface of the sample storage tank 1. The sealing film 4 is pressed downward, and the bottom of the elastic sealing film 4 touches the membrane rupturing needle 9 and is punctured by the membrane rupturing needle 9. The water sample at this depth then enters the cavity formed by the sample storage tank 1 and the anti-overflow arc top 10 through the through hole at the top of the anti-overflow arc top 10. After waiting for a period of time, when the water fills the cavity between the sample storage tank 1 and the anti-overflow arc top 10, the overall weight of the device increases. When the user determines that the sampling is completed, the sample storage tank 1 can be taken out of the water body by the mooring cable 3, and then the undamaged elastic sealing film 4 can be replaced. The surface of the sample storage tank 1 can be sealed with the sealing cover 2 and the elastic sealing film 4, and the sample sealing operation can be completed.

[0041] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An automatic sampling and storage device for detecting water pollutants, comprising a sample storage tank (1), characterized in that: An elastic sealing membrane (4) is fixedly provided on the top of the sample storage tank (1) via a sealing cover (2), and the top of the sealing cover (2) is connected to a mooring cable (3). A fixed threaded bolt (7) is fixedly provided on the bottom of the sample storage tank (1), and a threaded feed rod (5) for threaded feeding is installed on the fixed threaded bolt (7). A positioning seat (8) is fixedly adhered to the top of the threaded feed rod (5), and a membrane rupturing needle (9) is provided above the positioning seat (8).

2. The automatic sampling and storage device for water pollutant detection according to claim 1 is characterized by: The sample storage tank (1) is provided with an anti-overflow arc top (10) inside, and a through hole is provided at the center of the anti-overflow arc top (10) for the membrane rupturing needle (9) to pass through.

3. The automatic sampling and storage device for detecting water pollutants according to claim 1 is characterized by: A weight ball (6) is welded to the bottom of the threaded feed rod (5), and the weight ball (6) is made of stainless steel.

4. The automatic sampling and storage device for detecting water pollutants according to claim 1 is characterized by: The sealing cover (2) includes a ring cover (201) which is detachably screwed to the sample storage tank (1) by means of threads, and four equidistantly distributed mooring frames (203) are arranged above the ring cover (201). A connecting rope (204) is installed on the mooring frame (203), and the top of each connecting rope (204) is connected to a hanging block (205), and the hanging block (205) is fixedly connected to the mooring cable (3).

5. The automatic sampling and storage device for detecting water pollutants according to claim 4 is characterized by: A sealing gasket (202) is provided between the ring cover (201) and the sample storage tank (1).

6. The automatic sampling and storage device for water pollutant detection according to claim 1 is characterized by: The mooring cable (3) comprises a cable body (301), and a scale (302) is formed on the cable body (301).

7. The automatic sampling and storage device for water pollutant detection according to claim 6 is characterized by: The scale (302) is a fluorescent strip.

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