Fixed-depth quantitative liquid sampler

Abstract

The utility model relates to a fixed-depth quantitative liquid sampler, and belongs to the technical field of water treatment and chemical environmental protection equipment. According to the technical scheme, a liquid inlet hole is formed in the bottom of a sampling head barrel body (2), an exhaust hole is formed in a sampling head upper cover plate (5), an upper liquid blocking plug (4) and a lower liquid blocking plug (1) are arranged on the lower portion of the liquid inlet hole and the lower portion of the exhaust hole respectively and connected through an upper and lower liquid blocking plug connecting rod (3), and the top of the upper and lower liquid blocking plug connecting rod (3) is connected with a sampling rod (8); the control switch (6) is connected with the upper liquid blocking plug (4), and the spring (7) is connected with the upper liquid blocking plug (4). The utility model has the beneficial effects of simple maintenance, reliable function, wide application range, reliable sampling operation, stable sampling characteristics, better applicability and higher popularization value.

Description

Technical Field

[0001] The utility model relates to a fixed-depth and quantitative liquid sampler, belonging to the technical field of water treatment and chemical environmental protection equipment. Background Technique

[0002] A liquid sampler is a device for sampling liquids, such as samplers for water or muddy water in rivers, lakes, reservoirs, and pools, samplers for oil products on oil tankers, and samplers for liquid media in chemical liquid tanks. Liquid sampling is used for chemical analysis of liquid components and quality control parameters, either for intuitive discrimination or for retaining samples. For samplers, there are requirements for the sampling volume (volume) and sampling location (liquid level depth, such as surface liquid, middle-layer liquid, bottom-layer liquid). Currently, commonly used liquid samplers are often disturbed by flowing liquids, affecting the purity of the sampled liquid and resulting in errors in sampling results. Content of the Utility Model

[0003] The purpose of the utility model is to provide a fixed-depth and quantitative liquid sampler. Through a rigid sampling rod, the sampling head device can be accurately sent to a depth below the liquid level. The sampling head is controlled to intake liquid through a control switch, which has the advantages of simple maintenance, reliable function, wide application range, reliable sampling operation, and stable sampling characteristics. It has good applicability for sampling water or muddy water in existing conventional rivers, lakes, reservoirs, and pools, as well as for sampling oil products on oil tankers or for sampling liquid media in chemical liquid tanks, and has great promotion value, solving the above problems existing in the background technique.

[0004] The technical solution of the utility model is: a fixed-depth and quantitative liquid sampler, comprising a sampling rod, a sampling head, and a control switch. The sampling rod is fixedly connected to the sampling head. The sampling head includes a lower liquid blocking plug, a sampling head barrel body, an upper and lower liquid blocking plug connecting rod, an upper liquid blocking plug, a sampling head upper cover plate, and a spring. The bottom of the sampling head barrel body is provided with a liquid inlet hole. The sampling head upper cover plate is installed on the top of the sampling head barrel body. The sampling head upper cover plate is provided with an exhaust hole. The upper liquid blocking plug and the lower liquid blocking plug are respectively arranged below the liquid inlet hole and the exhaust hole. The upper liquid blocking plug and the lower liquid blocking plug are connected by the upper and lower liquid blocking plug connecting rod. The top of the upper and lower liquid blocking plug connecting rod is connected to the sampling rod. The control switch is arranged on the upper part of the sampling rod and is connected to the upper liquid blocking plug. The spring is arranged above the sampling head upper cover plate and is connected to the upper liquid blocking plug.

[0005] The control switch is an electromagnetic switch, and the upper liquid blocking plug is provided with an electromagnetic electromagnet.

[0006] The control switch is a pressure gas switch.

[0007] The sampling rod is made of a rigid material, and the number is more than one. Each length is 1.5 - 2.0 meters. The sampling rod is provided with a connection and fixing structure and can be connected and extended for use.

[0008] A length scale ruler is provided on the sampling rod, with the position of the liquid inlet of the sampling head as the zero point.

[0009] The sampling head is a bottom-cone cylindrical container, and the material of the sampling head is matched with the liquid medium and the working environment.

[0010] The strength of the spring is matched with the sampling depth.

[0011] The applicable sampling depth is within 20 meters.

[0012] The beneficial effects of the present utility model are as follows: The sampling head device can be accurately sent to a depth below the liquid level through the rigid sampling rod, and the sampling head is controlled to achieve liquid intake and sampling through the control switch. It has the advantages of simple maintenance, reliable function, wide application range, reliable sampling operation, and stable sampling characteristics. It has good applicability for sampling the water or muddy water of existing conventional rivers, lakes, reservoirs, and pools, as well as for sampling the oil products of oil tankers or the liquid media of chemical liquid tanks, and has great popularization value. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] In the figure: lower liquid-blocking plug 1, sampling head barrel body 2, upper and lower liquid-blocking plug connecting rod 3, upper liquid-blocking plug 4, sampling head upper cover plate 5, control switch 6, spring 7, sampling rod 8. Detailed Embodiment

[0015] In order to make the purposes, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments. Obviously, the described embodiments are only a small part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0016] A fixed-depth and quantitative liquid sampler, comprising a sampling rod 8, a sampling head, and a control switch 6. The sampling rod 8 is fixedly connected to the sampling head. The sampling head includes a lower liquid-blocking plug 1, a sampling head barrel body 2, an upper and lower liquid-blocking plug connecting rod 3, an upper liquid-blocking plug 4, a sampling head upper cover plate 5, and a spring 7. The bottom of the sampling head barrel body 2 is provided with a liquid inlet hole. The sampling head upper cover plate 5 is installed on the top of the sampling head barrel body 2. The sampling head upper cover plate 5 is provided with an exhaust hole. The upper liquid-blocking plug 4 and the lower liquid-blocking plug 1 are respectively arranged below the liquid inlet hole and the exhaust hole. The upper liquid-blocking plug 4 and the lower liquid-blocking plug 1 are connected by the upper and lower liquid-blocking plug connecting rod 3. The top of the upper and lower liquid-blocking plug connecting rod 3 is connected to the sampling rod 8. The control switch 6 is arranged on the upper part of the sampling rod 8 and is connected to the upper liquid-blocking plug 4. The spring 7 is arranged above the sampling head upper cover plate 5 and is connected to the upper liquid-blocking plug 4.

[0017] The control switch 6 is an electromagnetic switch, and the upper liquid-blocking plug 4 is provided with an electromagnetic electromagnet.

[0018] The control switch 6 is a pressure gas switch.

[0019] The sampling rod 8 is made of a hard material, and the number is more than one. Each length is 1.5 to 2.0 meters. The sampling rod 8 is provided with a connection and fixation structure and can be connected and extended for use.

[0020] The sampling rod 8 is provided with a length scale ruler, with the position of the liquid inlet of the sampling head as the zero point.

[0021] The sampling head is a bottom-cone cylindrical container, and the material of the sampling head is matched with the liquid medium and the working environment.

[0022] The strength of the spring 7 is matched with the sampling depth.

[0023] The applicable sampling depth is within 20 meters.

[0024] In practical applications, the sampling rod 8 is fixedly connected to the sampling head. The sampling rod 8 is equipped with a length scale ruler, with the position of the liquid inlet of the sampling head as the zero point. One rod has a length of 1.5 - 2.0 meters and can be connected and fixed for extended use. The sampling rod 8 has a certain hardness to resist the disturbance of flowing liquid. The sampling head is a bottom-cone cylindrical container. The bottom cone head is provided with a liquid inlet hole, and the upper cover plate 5 of the sampling head has an exhaust hole. The liquid inlet hole and the exhaust hole are respectively equipped with a lower liquid-blocking plug 1 and an upper liquid-blocking plug 4. The lower liquid-blocking plug 1 and the upper liquid-blocking plug 4 are connected by an upper and lower liquid-blocking plug connecting rod 3, and the upper and lower liquid-blocking plug connecting rod 3 is connected to the sampling rod 8. Under the action of an external force (such as magnetic force, pressurized gas, etc.), the lower liquid-blocking plug 1 and the upper liquid-blocking plug 4 fit with the liquid inlet hole and the exhaust hole to block the entry of liquid. After reaching the sampling depth, by controlling the switch 6 to cut off the power and demagnetize or adjust the gas pressure, the lower liquid-blocking plug 1 and the upper liquid-blocking plug 4 are opened under the action of the spring 7 for liquid inlet sampling. After sampling, the magnetic force or pressurized gas is restored, and the lower liquid-blocking plug 1 and the upper liquid-blocking plug 4 fit again to block the liquid flow, completing the sampling.

[0025] The utility model can be used for various liquid fixed-depth sampling operations, but it needs to meet the sampling requirements of specific liquid media and operating environments. For example, when sampling in the oil tank of an oil tanker with flammable and explosive substances, the material of the sampling head and the control unit must meet the explosion-proof requirements, such as using copper components, etc. Before sampling, the air in the barrel of the sampling head must be replaced with an inert gas such as nitrogen to ensure safe sampling. At the same time, considering the operability of personnel, the utility model is not suitable for sampling in the center of a deep lake or the ocean with too great a depth. Generally, the sampling depth is within 20 meters. For different sampling depths, it is necessary to fully consider the change in liquid pressure and select different springs and corresponding electromagnetic switches or pressure gas switches.

[0026] The material of the sampling head of the utility model is determined according to the liquid medium and the operating environment, and common materials such as carbon steel, stainless steel, and composite materials can be used. Embodiment

[0027] The utility model is selected to be applied in the regulating tank of the phenol-cyanide wastewater treatment station in a coking plant of a certain iron and steel enterprise. The parameters of its application environment are: the size of the water tank is 30m × 30m × 6.5m; the inside of the regulating tank is coking phenol-cyanide wastewater, and the designed sampling method is to take 1L each at -2.0m; -4.0m; -6.0m below the liquid level, and take several groups of samples according to the width of the tank and the water flow direction in the tank. The selected sampling head is made of stainless steel, with a fixed quantity of 1L, 4 sampling rods of 1.5m, rubber seals are added to the upper surfaces of the upper liquid-blocking plug and the lower liquid-blocking plug, an electromagnetic electromagnet is set on the upper liquid-blocking plug, and the upper cover plate of the sampling head is made of carbon steel to achieve tight suction of the upper liquid-blocking plug and the upper cover plate of the sampling head when powered on.

[0028] The working process is as follows: Start the electromagnetic switch, the upper liquid-blocking plug and the lower liquid-blocking plug of the sampling head are closed. Use the sampling rod to insert the sampling head below the liquid level. After observing that the length scale of the sampling rod reaches the specified depth, close the electromagnetic switch, open the upper liquid-blocking plug and the lower liquid-blocking plug of the sampling head, and conduct liquid intake sampling. At this time, bubbles will rise on the water surface. When the bubbles no longer appear, start the electromagnetic switch, close the upper liquid-blocking plug and the lower liquid-blocking plug, and pull out the sampling rod to complete the sampling.

[0029] Comparing with the sampling results without using the present utility model, the error of the sampling test indexes using the present utility model decreases significantly, and the data reproducibility is good.

Claims

1. A liquid sampler with a fixed depth and fixed quantity, characterized in that: It includes a sampling rod (8), a sampling head, and a control switch (6). The sampling rod (8) is fixedly connected to the sampling head. The sampling head includes a lower liquid-blocking plug (1), a sampling head barrel body (2), an upper and lower liquid-blocking plug connecting rod (3), an upper liquid-blocking plug (4), a sampling head upper cover plate (5), and a spring (7). A liquid inlet hole is provided at the bottom of the sampling head barrel body (2). The sampling head upper cover plate (5) is installed on the top of the sampling head barrel body (2). An exhaust hole is provided on the sampling head upper cover plate (5). The upper liquid-blocking plug (4) and the lower liquid-blocking plug (1) are respectively arranged below the liquid inlet hole and the exhaust hole. The upper liquid-blocking plug (4) and the lower liquid-blocking plug (1) are connected by the upper and lower liquid-blocking plug connecting rod (3). The top of the upper and lower liquid-blocking plug connecting rod (3) is connected to the sampling rod (8). The control switch (6) is arranged on the upper part of the sampling rod (8) and is connected to the upper liquid-blocking plug (4). The spring (7) is arranged above the sampling head upper cover plate (5) and is connected to the upper liquid-blocking plug (4).

2. The quantitative liquid sampler with a fixed depth according to claim 1, characterized in that: The control switch (6) is an electromagnetic switch, and the upper liquid-blocking plug (4) is provided with an electromagnetic electromagnet.

3. The quantitative liquid sampler with a fixed depth according to claim 1, characterized in that: The control switch (6) is a pressure gas switch.

4. The fixed-depth and quantitative liquid sampler according to claim 1, wherein: A length scale ruler is provided on the sampling rod (8), with the position of the liquid inlet of the sampling head as the zero point.

5. The fixed-depth and quantitative liquid sampler according to claim 1, wherein: The sampling head is a bottom-cone cylindrical container.

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