Multilayer sampler for detecting bacteria in water body

Abstract

The utility model discloses a multilayer sampler for detecting bacteria in a water body, which comprises a sleeve and a core rod, the core rod is inserted in the sleeve, the top end of the core rod exceeds the sleeve, and a pre-tightening mechanism enabling the core rod to have a downward movement trend is arranged between the core rod and the sleeve; a plurality of notches are formed in the peripheral wall of the sleeve at intervals, pressing pieces connected with the core rod are horizontally installed in the notches, and the pressing pieces are fixed to the sealing cover so as to drive the sealing cover to move in the vertical direction; a sampling cylinder is fixed on the peripheral wall of the sleeve through a bracket and corresponds to the position under each sealing cover. According to the utility model, samples of a plurality of water layers can be collected at one time, and the sampling cylinder is in a sealed state before and after the sampling, so that samples of other water layers cannot be mixed, and the accuracy of detecting bacteria in the water body can be improved, so that the depth distribution of florae in the water body can be more accurately judged.

Description

Technical Field

[0001] The utility model relates to a sampler, in particular to a multi-layer sampler used for bacteria detection in water. Background Art

[0002] The bacterial index in water bodies is a key parameter for water body monitoring. Bacteria will also change with the depth of the water body, so multi-layer sampling is required during sampling. The most stupid way at present is to pump water layer by layer. On the one hand, the efficiency is very low. On the other hand, this sampling method can easily confuse samples from other water layers through the catheter, thereby affecting the final test data. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a multi-layer sampler for bacteria detection in water, so as to solve the technical problems in the above-mentioned background technology.

[0004] In order to solve the above technical problems, the technical solution of the utility model is:

[0005] A multilayer sampler for bacteria detection in water comprises a sleeve and a core rod, wherein the core rod is inserted into the sleeve, and the top end thereof protrudes from the sleeve, and a pre-tightening mechanism is arranged between the core rod and the sleeve so as to make the core rod have a downward movement tendency; a plurality of notches are arranged at intervals on the peripheral wall of the sleeve, and a pressing piece connected to the core rod is horizontally installed in the notch, and the pressing piece is fixed to a sealing cover so as to drive the same to move in a vertical direction; a sampling cylinder is fixed to the peripheral wall of the sleeve by a bracket at a position directly below each sealing cover.

[0006] Further, the sealing cover is fixed to the bottom side of the pressed tablet.

[0007] Furthermore, the bracket is of a clamping ring type and is provided with an internal thread, and an external thread is provided on the top peripheral wall of the sampling tube, and the bracket and the sampling tube are fixed by screwing together the threads.

[0008] Furthermore, the pre-tightening mechanism includes a spring, a lower limit platform and an upper limit platform, wherein the lower limit platform is fixed to the top of the sleeve, the upper limit platform is fixed on the core rod at a position higher than the top of the sleeve, the spring is passed through the core rod, and the bottom and top are respectively fixed to the lower limit platform and the upper limit platform.

[0009] Furthermore, a slip ring is passed through the upper limit platform on the core rod, and handles A are symmetrically arranged on both sides of the slip ring. The bottoms of both sides of the handles A are symmetrically connected to the two sides of the lower limit ring through inclined frames, and a handle B is installed on the top of the core rod.

[0010] Furthermore, a protruding plunger portion is provided at the center of the bottom of the sealing cover, and a sealing gasket is provided at the bottom of the sealing cover around the periphery of the plunger portion.

[0011] The advantages of the utility model are:

[0012] The utility model can collect samples from multiple water layers at one time, and the sampling tube is in a sealed state before and after collection, and will not be confused with samples from other water layers. The accuracy of bacterial detection in water bodies can be improved, thereby making it easier to make a more accurate judgment on the depth distribution of bacterial flora in water bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 for Figure 1 A schematic diagram of the enlarged part A in FIG.

[0015] Figure 3 for Figure 1 A schematic diagram of the enlarged part B in FIG.

[0016] Figure 4 Schematic diagram of the sealing cover structure.

[0017] In the figure, 1-sleeve, 11-slot, 12-lower limit platform, 13-inclined bracket, 14-handle A, 141-slip ring, 2-core rod, 21-pressing sheet, 22-upper limit platform, 23-handle B, 3-bracket, 4-sampling cylinder, 41-external thread, 5-sealing cover, 51-plunger part, 52-sealing gasket, 6-spring. DETAILED DESCRIPTION

[0018] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0019] As shown in the figure:

[0020] A multi-layer sampler for bacteria detection in water comprises a sleeve 1 and a core rod 2, wherein the core rod 2 is inserted into the sleeve 1, and the top end of the core rod 2 protrudes from the sleeve 1, and a pre-tightening mechanism is arranged between the core rod 2 and the sleeve 1 so that the core rod 2 has a downward movement tendency; a plurality of notches 11 are arranged at intervals on the peripheral wall of the sleeve 1, and a pressing piece 21 connected to the core rod 2 is horizontally installed in the notch 11, and the pressing piece 21 is fixed to a sealing cover 5 so as to drive it to move in a vertical direction; a sampling cylinder 4 is fixed to the peripheral wall of the sleeve 1 by a bracket 3 at a position directly below each sealing cover 5.

[0021] Working principle: insert the sampler into the water body to be sampled, under the action of the pre-tightening mechanism, the sealing cover 5 will seal the sampling tube 4, after being inserted into the water body, pull up the core rod 2, at this time the sealing cover 5 will be separated from the sampling tube, because the sampling tube 4 is facing upward, it will quickly fill with the water sample of the corresponding water layer, then release the core rod 2, the pre-tightening mechanism will make the core rod 2 move downward, so that the pressing piece 21 moves downward to drive the sealing cover 5 to seal the sampling tube 4, and the sampling is completed. A protruding plunger portion 51 can be provided at the center of the bottom of the sealing cover 5, and a sealing gasket 51 is provided on the periphery of the plunger portion 51 at the bottom of the sealing cover 5 to improve the sealing performance.

[0022] As an optimized solution, the sealing cover 5 is fixed to the bottom side of the pressing piece 21, which is more convenient and more stable than connecting to the edge. Since the sampling tube 4 is hollow when entering and has buoyancy, the bracket 3 can adopt a snap ring type with an internal thread, and an external thread 41 is provided on the top peripheral wall of the sampling tube 4. The bracket 3 and the sampling tube 4 are fixed by screwing together, which can prevent the sampling tube 4 from floating up and facilitate the subsequent removal of the sampling tube 4.

[0023] The pre-tightening mechanism may include a spring 6, a lower limit platform 12 and an upper limit platform 22. The lower limit platform 12 is fixed to the top of the sleeve 1, and the upper limit platform 22 is fixed on the core rod 2 at a position higher than the top of the sleeve 1. The spring 6 is passed through the core rod 2, and the bottom and top are respectively fixed to the lower limit platform 12 and the upper limit platform 22. The spring 6 drives the upper limit platform 22 and the lower limit platform 12 to move closer, thereby generating a pre-tightening force for the core rod 2 to move downward.

[0024] For the convenience of operation, a slip ring 141 is passed through the upper side of the upper limit platform 22 on the core rod 2, and handles A14 are symmetrically arranged on both sides of the slip ring 141. The bottoms of both sides of the handle A14 are symmetrically connected to the two sides of the lower limit ring through the inclined frame 13. A handle B23 is installed on the top of the core rod 2. This makes it convenient to pull out the core rod 2. The core rod 2 can be pulled out by holding the handle A14 with one hand and the handle B23 with the other hand.

[0025] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A multi-layer sampler for bacterial detection in water, characterized in that: It includes a sleeve and a core rod, the core rod is inserted into the sleeve, the top end of the core rod protrudes from the sleeve, and a pre-tightening mechanism is arranged between the core rod and the sleeve to make the core rod have a downward movement tendency; a plurality of notches are arranged at intervals on the peripheral wall of the sleeve, and a pressing piece connected to the core rod is horizontally installed in the notch, and the pressing piece is fixed to the sealing cover to drive it to move in the vertical direction; a sampling cylinder is fixed to the peripheral wall of the sleeve through a bracket at a position directly below each sealing cover.

2. The multi-layer sampler for bacteria detection in water according to claim 1, characterized in that: The sealing cover is fixed to the bottom side of the pressed tablet.

3. The multi-layer sampler for bacteria detection in water according to claim 1, characterized in that: The bracket is of a clamping ring type and is provided with an internal thread. An external thread is provided on the top peripheral wall of the sampling tube. The bracket and the sampling tube are fixed by screwing the threads together.

4. The multilayer sampler for bacteria detection in water according to any one of claims 1 to 3, characterized in that: The preload mechanism includes a spring, a lower limit platform and an upper limit platform. The lower limit platform is fixed to the top of the sleeve, and the upper limit platform is fixed on the core rod at a position higher than the top of the sleeve. The spring is passed through the core rod, and the bottom and top are respectively fixed to the lower limit platform and the upper limit platform.

5. The multi-layer sampler for detecting bacteria in water according to claim 4, characterized in that: The core rod is provided with a slip ring on the upper limit platform, and handles A are symmetrically arranged on both sides of the slip ring. The bottoms of the two sides of the handle A are symmetrically connected to the two sides of the lower limit ring through inclined frames, and a handle B is installed on the top of the core rod.

6. The multi-layer sampler for bacteria detection in water according to claim 1, characterized in that: A protruding plunger portion is arranged at the center of the bottom of the sealing cover, and a sealing gasket is arranged at the periphery of the plunger portion at the bottom of the sealing cover.

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