CN111487089A - liquid sampler - Google Patents

Abstract

The invention discloses a liquid sampler which comprises a sealed sampling bottle, an air extractor for extracting air in the sealed sampling bottle, a sampling pipe communicated with the inside of the sealed sampling bottle, a water depth indicator arranged on the sampling pipe, and a sampling rod for installing the sampling pipe. The end of intaking of operation sampling pole with the sampling pipe is placed in the waters of treating the sampling, the end of intaking of sampling pipe stretches into the surface of water again, the degree of depth of sampling is confirmed according to the depth of water indicateing mark of sampling pipe, then air exhaust device work is taken out the air in sealed sampling bottle, make and form the negative pressure in the sealed sampling bottle, the liquid sample of treating the collection passes through in the sampling pipe inflow sealed sampling bottle, and then realize the collection of liquid sample, because can stretch into the degree of depth of treating the sampling with the end of intaking of sampling pipe again will seal the sampling bottle and form the negative pressure and carry out the sampling of liquid, can ensure that the liquid sample of collection all is the liquid sample of the fixed degree of depth of predetermineeing, and then guarantee the accuracy of sampling.

Description

liquid sampler

technical field

The invention relates to the field of liquid sampling, in particular to a liquid sampler.

Background technique

In order to test the water quality, water samples from rivers and lakes are usually collected for testing. The existing common sampler is the plexiglass water quality sampler. During use, first clamp the rubber tube of the water outlet of the sampler, then open the upper cover, let the sampler sink into the water, and the bottom water inlet will automatically open. When it enters the desired depth, the tether is lifted up, and the upper cover and the lower water inlet are automatically closed. Extend the rubber tube of the water outlet into the mouth of the container, release the iron clip, and the water sample is injected into the container to complete the collection of the water sample. When this sampling method has the following defects: it is difficult to adapt to the water body with long slopes and complex shore environmental conditions; in the process of throwing the sampler and pulling back after taking water, it is easy to bump into other objects, causing damage to the plexiglass; The water body is disturbed greatly, and the water samples taken are often mixed samples at different depths, rather than water samples at a specific depth, resulting in inaccurate sampling.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a liquid sampler, which aims to solve the problem of inaccurate liquid sampling in the prior art.

For this purpose, the present invention adopts the following technical solutions:

A liquid sampler, comprising a sealed sampling bottle, an air extraction device for extracting the air inside the sealed sampling bottle, a sampling tube communicated with the inside of the sealed sampling bottle, a water depth indicator set on the sampling tube, and a sampling rod for mounting the sampling tube.

Further, the sampling rod includes a fixed rod and a telescopic rod connected with the fixed rod.

Further, a connecting piece is provided between the fixing rod and the telescopic rod, and the fixing rod is detachably connected to the telescopic rod through the connecting piece.

Further, the sampling pipe includes a rigid conduit fixedly installed on the sampling rod and communicated with the interior of the sealed sampling bottle, and a flexible conduit connected with the rigid conduit; The flexible conduit is arranged through the suspension ring.

Further, an adapter is provided between the hard conduit and the soft conduit, and the hard conduit is detachably connected to the soft conduit through the adapter.

Further, the air extraction device includes an air extraction cylinder communicated with the interior of the sealed sampling bottle, and an air extraction piston provided in the air extraction cylinder.

Further, an air extraction pipe is provided between the air extraction cylinder and the sealed sampling bottle, one end of the air extraction pipe is communicated with the interior of the sealed sampling bottle, and the other end of the air extraction pipe is provided for the extraction. The first one-way valve for exhausting the air device, and the air suction cylinder is communicated with the air suction pipe.

Further, the sampling tube is provided with a second one-way valve for liquid to flow to the sealed sampling bottle.

Further, a weight is provided on the sampling tube.

Further, the sealed sampling bottle is transparent, and the sealed sampling bottle is provided with a sampling scale line.

Further, the sealed sampling bottle includes a sampling bottle body and a sampling bottle cap for sealing the sampling bottle body.

Further, the sampling bottle cap is fixedly mounted on the sampling rod.

The beneficial effects of the invention are as follows: operate the sampling rod to place the water inlet end of the sampling pipe in the water area to be sampled, then extend the water inlet end of the sampling pipe into the water surface, determine the sampling depth according to the water depth indicator of the sampling pipe, and then pump air The device works to remove the air in the sealed sampling bottle, so that a negative pressure is formed in the sealed sampling bottle, and the liquid sample to be collected flows into the sealed sampling bottle through the sampling tube, thereby realizing the collection of the liquid sample. The water end extends into the depth to be sampled, and then a negative pressure is formed in the sealed sampling bottle for liquid sampling, which can ensure that the collected liquid samples are all liquid samples with a fixed preset depth, thereby ensuring the accuracy of sampling.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for the present invention. In some embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

1 is a schematic structural diagram of a liquid sampler in an embodiment of the present invention;

In the picture:

1. Sealed sampling bottle; 101. Sampling bottle body; 102. Sampling bottle cap; 103, Sampling scale line; ; 302, flexible conduit; 303, adapter; 4, water depth indicator; 5, sampling rod; 501, fixed rod; 502, telescopic rod; 503, connecting piece; 6, suction pipe; 7, the first one-way valve; 8. Second check valve; 9. Heavy hammer; 10. Lifting ring.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

It is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device. Or elements must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

The implementation of the present invention will be described in detail below with reference to specific embodiments.

As shown in FIG. 1 , an embodiment of the present invention proposes a liquid sampler, which includes a sealed sampling bottle 1 , an air extraction device 2 for extracting the air inside the sealed sampling bottle 1 , and an air extraction device 2 communicating with the inside of the sealed sampling bottle 1 . The sampling pipe 3 , the water depth indicator 4 provided on the sampling pipe 3 , and the sampling rod 5 for installing the sampling pipe 3 .

In the embodiment of the present invention, the sampling process of the liquid (river water, lake water, seawater, etc.) by the liquid sampler is as follows: operate the sampling rod 5 to place the water inlet end of the sampling pipe 3 in the water area to be sampled, and then place the sampling pipe 3 The water inlet end extends into the water surface, and the sampling depth is determined according to the water depth indicator 4 of the sampling tube 3, and then the air extraction device 2 works to extract the air in the sealed sampling bottle 1, so that a negative pressure is formed in the sealed sampling bottle 1. The collected liquid sample flows into the sealed sampling bottle 1 through the sampling tube 3, thereby realizing the collection of the liquid sample. Because the water inlet end of the sampling tube 3 can be extended into the depth to be sampled, and then the sealed sampling bottle 1 is formed into a negative pressure. Liquid sampling can ensure that the collected liquid samples are all liquid samples of a fixed preset depth, rather than mixed samples of different depths, thereby ensuring the accuracy of sampling.

Due to the setting of the sampling rod 5, the sampling pipe 3 can be driven by the sampling rod 5 to a position farther from the shore or to a sample of a water body with many obstacles; the sealed sampling bottle 1 can be placed on the shore or on other carrying objects. It is not easy to touch during use and is not easy to be damaged during use, thereby reducing the cost of use; the sealed sampling bottle 1 can be placed on the shore or other carrying objects, thereby realizing that the main weight of the liquid sampler is concentrated on the shore, It is more labor-saving during use.

Further, referring to FIG. 1 , as a specific embodiment of the liquid sampler provided by the present invention, the sampling rod 5 includes a fixed rod 501 and a telescopic rod 502 connected with the fixed rod 501 . The length of the telescopic rod 502 can be changed in a telescopic manner, thereby realizing sampling by placing the sampling tube 3 at different positions off the shore.

Further, please refer to FIG. 1 , as a specific embodiment of the liquid sampler provided by the present invention, a connecting member 503 is provided between the fixed rod 501 and the telescopic rod 502 , and the fixed rod 501 can be connected to the telescopic rod 502 through the connecting member 503 Remove the connection. The fixing rod 501 and the telescopic rod 502 can be quickly connected and disassembled through the connecting piece 503, which facilitates the assembly of the sampling rod 5 and the carrying of the sampling rod 5 after disassembly.

Further, referring to FIG. 1 , as a specific embodiment of the liquid sampler provided by the present invention, the sampling tube 3 includes a rigid conduit 301 fixedly installed on the sampling rod 5 and communicated with the interior of the sealed sampling bottle 1 , and a rigid conduit 301 connected to the The flexible conduit 302 connected to the conduit 301; the sampling rod 5 is provided with a suspension ring 10, and the flexible conduit 302 is arranged through the suspension ring 10. The rigid conduit 301 is fixed on the sampling rod 5 and communicates with the interior of the sealed sampling bottle 1 to ensure the stability when the rigid conduit 301 is installed and connected to the sealed sampling bottle 1. The flexible conduit 302 is installed on the sampling rod 5 through the lifting ring 10 and can The relative sampling rod 5 is bent to be inserted into the liquid to be sampled.

Further, please refer to FIG. 1 , as a specific embodiment of the liquid sampler provided by the present invention, an adaptor 303 is provided between the rigid conduit 301 and the flexible conduit 302 , and the rigid conduit 301 can be connected to the flexible conduit 302 through the adaptor 303 and the flexible conduit 302 . Remove the connection. An adapter 303 is provided between the rigid conduit 301 and the flexible conduit 302 to realize quick disassembly and assembly. When the depth of the liquid to be sampled is deep, the flexible conduit 302 with a longer length can be quickly replaced to meet the needs of use.

Further, please refer to FIG. 1 , as a specific embodiment of the liquid sampler provided by the present invention, the air extraction device 2 includes an air extraction cylinder 201 communicated with the interior of the sealed sampling bottle 1 , and an air extraction cylinder 201 arranged in the air extraction cylinder 201 . Gas piston 202 . By operating the pumping piston 202 to move in the pumping cylinder 201, the air in the sealed sampling bottle 1 can be extracted, which can be operated manually without the supply of external energy. Of course, in the embodiment of the present invention, an automatic device such as an air pump can also be used to extract the air in the sealed sampling bottle 1 .

Further, please refer to FIG. 1 , as a specific embodiment of the liquid sampler provided by the present invention, an air extraction tube 6 is provided between the air extraction cylinder 201 and the sealed sampling bottle 1 , and one end of the air extraction tube 6 is connected to the sealed sampling bottle 1 . Internally communicated, the other end of the air extraction pipe 6 is provided with a first one-way valve 7 for exhausting the air from the air extraction device 2 , and the air extraction cylinder 201 is communicated with the air extraction pipe 6 . Pulling the air pumping piston 202 can extract the air in the sealed sampling bottle 1. At this time, the first one-way valve 7 is closed, and the liquid enters the sealed sampling bottle 1 along the sampling tube 3. Activate the pumping piston 202, that is, after pulling the pumping piston 202, it is necessary to push the pumping piston 202 to reset, and when the pumping piston 202 is reset, the first one-way valve 7 is opened for exhausting the pumping device 2, so as to avoid sampling the seal The liquid in bottle 1 is drained.

Further, referring to FIG. 1 , as a specific embodiment of the liquid sampler provided by the present invention, the sampling tube 3 is provided with a second one-way valve 8 for the liquid to flow to the sealed sampling bottle 1 . The second one-way valve 8 is provided, so that the liquid cannot flow out of the sealed sampling bottle 1 through the sampling tube 3, further ensuring that the liquid in the sampling bottle will not be discharged when the pumping piston 202 is pushed to reset.

Further, referring to FIG. 1 , as a specific embodiment of the liquid sampler provided by the present invention, the sealed sampling bottle 1 is fixedly installed on the sampling rod 5 , which improves the integrity of the liquid sampler and is easy to carry.

Further, please refer to FIG. 1, as a specific embodiment of the liquid sampler provided by the present invention, the sampling pipe 3 is provided with a weight 9, so that the sampling pipe 3 can be vertically extended into the liquid, and the water depth indicator 4 can be raised. The accuracy of the depth indication further realizes the accuracy of sampling.

Further, please refer to FIG. 1 , as a specific embodiment of the liquid sampler provided by the present invention, the sealed sampling bottle 1 is transparent, and the sealed sampling bottle 1 is provided with a sampling scale line 103 to facilitate the observation of the volume of the collected liquid Whether the preset requirements are met.

Further, referring to FIG. 1 , as a specific embodiment of the liquid sampler provided by the present invention, the sealed sampling bottle 1 includes a sampling bottle body 101 and a sampling bottle cap 102 for sealing the sampling bottle 1 body. After the liquid is collected, open the sampling bottle cap 102 and pour the liquid in the sampling bottle body 101 into the collection container.

Further, referring to FIG. 1 , as a specific embodiment of the liquid sampler provided by the present invention, the sampling bottle cap 102 is fixedly mounted on the sampling rod 5 . The sampling bottle cap 102 is fixedly installed on the sampling rod 5, and the sampling bottle cap 102 and the sampling bottle body 101 are detachably connected by means of screw connection or the like. When in use, the sampling bottle body 101 is connected with the sampling bottle cap 102. The sampling bottle body 101 is removed in the use state to facilitate the transportation and storage of the liquid sampler.

Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the embodiments of the present invention. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (10)

1. A liquid sampler, characterized in that it comprises a sealed sampling bottle, an air extraction device for extracting the air inside the sealed sampling bottle, a sampling tube communicated with the inside of the sealed sampling bottle, a A water depth indicator for the pipe, and a sampling rod for mounting the sampling pipe. 2 . The liquid sampler according to claim 1 , wherein the sampling rod comprises a fixed rod and a telescopic rod connected with the fixed rod. 3 . 3 . The liquid sampler according to claim 2 , wherein a connecting piece is provided between the fixing rod and the telescopic rod, and the fixing rod is detachably connected to the telescopic rod through the connecting piece. 4 . . 4 . The liquid sampler according to claim 1 , wherein the sampling tube comprises a rigid conduit fixedly mounted on the sampling rod and communicated with the interior of the sealed sampling bottle, and connected with the rigid conduit. 5 . The flexible conduit; the sampling rod is provided with a suspension ring, and the flexible conduit is arranged through the suspension ring. 5 . The liquid sampler according to claim 4 , wherein an adapter is provided between the rigid conduit and the flexible conduit, and the rigid conduit is detachably connected to the flexible conduit through the adapter. 6 . . 6. The liquid sampler according to any one of claims 1 to 5, wherein the air extraction device comprises an air extraction cylinder communicated with the interior of the sealed sampling bottle, and an air extraction cylinder provided in the air extraction cylinder. Extraction piston. 7 . The liquid sampler according to claim 6 , wherein an air extraction pipe is provided between the air extraction cylinder and the sealed sampling bottle, and one end of the air extraction pipe is communicated with the interior of the sealed sampling bottle, 8 . The other end of the air extraction pipe is provided with a first one-way valve for exhausting the air from the air extraction device, and the air extraction cylinder communicates with the air extraction pipe. 8. The liquid sampler of claim 7, wherein the sampling tube is provided with a second one-way valve for liquid to flow to the sealed sampling bottle. 9 . The liquid sampler according to claim 1 , wherein a weight is provided on the sampling tube. 10 . 10 . The liquid sampler according to claim 1 , wherein the sealed sampling bottle comprises a sampling bottle body and a sampling bottle cap for sealing the sampling bottle body. 11 .

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