CN110987532B

CN110987532B - Water sampling mechanism

Info

Publication number: CN110987532B
Application number: CN201911367986.5A
Authority: CN
Inventors: 周永芳; 王晓冬; 董群欢; 詹子宽; 陈际; 杜双双; 周日安
Original assignee: Wenzhou University
Current assignee: Wenzhou Water Supply Co ltd; Wenzhou University
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2022-03-11
Anticipated expiration: 2039-12-26
Also published as: CN110987532A

Abstract

The invention provides a water body sampling mechanism which comprises a fixing cover, a shell connected with the fixing cover and a water sampler arranged in the shell, wherein a through hole is formed in the center of the shell, an installation cavity is formed in the shell, a fixing sleeve screwed with the through hole is arranged in the installation cavity, the water sampler is positioned in the fixing sleeve, a driving mechanism used for controlling the water sampler to enter water is arranged at the top of the shell, the driving mechanism comprises a rotating shaft, fixing blocks respectively fixed at two ends of the rotating shaft and a first driving motor, a winding wheel is sleeved on the rotating shaft, and a connecting rope connected with the water sampler is wound on the winding wheel. The invention has accurate sampling precision, convenient operation, high sampling efficiency and wide application range.

Description

Water sampling mechanism

Technical Field

The invention particularly relates to a water body sampling mechanism.

Background

Water sampling is a work which cannot be overlooked in water quality analysis and monitoring work, and the selection and improvement of a water sampling technology play a crucial role in the representativeness, effectiveness and accuracy of collected water samples. Most of the existing water sampling mechanisms put down the water sampler from the water area through manual work and then stand for a period of time, and then extract the water sampler, so that the depth control deviation of the water sampler descending is large, and when the water sampler is operated manually, the water samples which are collected at the same position and different depths cannot be ensured, and therefore the water detection result has deviation. The sampling personnel get into the waters and carry out the manual sampling, and when the waters of sampling is too wide, dangerous, when the operational environment is very dangerous, this kind relies on mother's ship, the mode of artifical sampling will be very difficult to carry out the sampling inefficiency through the manual work, the troublesome poeration, working strength is big.

Disclosure of Invention

Based on the problems, the invention aims to provide the water body sampling mechanism which is accurate in sampling precision, convenient to operate, high in sampling efficiency and wide in application range.

Aiming at the problems, the following technical scheme is provided: a water sampling mechanism comprises a fixed cover, a shell connected with the fixed cover and a water sampler arranged in the shell, wherein a through hole is formed in the center of the shell, an installation cavity is formed in the shell, a fixed sleeve connected with the through hole in a threaded manner is arranged in the installation cavity, the water sampler is positioned in the fixed sleeve, a driving mechanism used for controlling the water sampler to enter water is arranged at the top of the shell, the driving mechanism comprises a rotating shaft, fixed blocks and a first driving motor, the fixed blocks are respectively fixed at two ends of the rotating shaft, a reel is sleeved on the rotating shaft, a connecting rope connected with the water sampler is wound on the reel, a water outlet nozzle is arranged on the outer wall of the bottom end of the water sampler, a check valve is screwed on the water outlet nozzle, an open slot matched with the water outlet nozzle is formed in the bottom of the fixed sleeve, and a baffle ring positioned below the top wall of the installation cavity is arranged on the outer circumferential wall of the fixed sleeve, the water distributor is characterized in that a rotating disc is sleeved between the retaining ring and the top wall of the mounting cavity on the fixing sleeve, the rotating disc is connected with the fixing sleeve through a bearing, a groove is formed in the position, corresponding to the through hole, of the bottom of the rotating disc, a first driver for driving the rotating disc to rotate is arranged on the shell, a mounting hole is formed in the position, located on the same horizontal plane with the water outlet nozzle, of the outer circumferential wall of the rotating disc, a water distributor is arranged in the mounting hole and comprises a water collecting bottle and a water inlet nozzle, the water collecting bottle is located in the mounting hole, the water inlet nozzle is communicated with the water collecting bottle and penetrates through the mounting hole to the groove, an opening and closing mechanism for opening a check valve to be communicated with the water collecting bottle is arranged at the front end of the water inlet nozzle, the water distributor is provided with a plurality of devices and is circumferentially arranged relative to the center of the rotating disc, and a second driver for pushing the water distributor to move towards the water outlet nozzle is arranged on the outer side of the water distributor corresponding to the water outlet nozzle, one end cover that the water inlet nozzle is located the mounting hole is equipped with the first spring that both ends offset with water collecting bottle terminal surface and mounting hole inner wall respectively.

In the above configuration, the power supply device is provided on the side of the housing opposite to the second driver, thereby ensuring that the center of gravity of the housing is located at the center thereof. The invention is fixed at the bottom of an unmanned aerial vehicle or on other conveying tools for remote control operation, so that the convenience of a sampler can be improved, the sampler can move to an open water area, a region with a severe terrain and unknown heavy pollution risk, and a region where personnel and ships are difficult to enter is sampled, the operation risk can be reduced, and the operation task is safe and simple. The conveying tool provided with the sampling mechanism is remotely controlled to a water area needing sampling, then a first driving motor is controlled to start through remote control, the first driving motor controls a rotating shaft to drive a reel to rotate, so that the water sampler descends to a specified depth relative to a through hole and stands for a period of time, after water enters the water sampler, the rotating shaft is driven by the first driving motor to drive the reel to rotate reversely, the water sampler ascends to a reset position relative to a fixed sleeve, a water collecting bottle is pushed by a second driver to drive a water inlet nozzle to displace towards a water outlet nozzle until an opening and closing mechanism opens a one-way valve, the water collecting bottle is communicated with a cylinder body, and a first spring is in a compressed state, so that water samples in the cylinder body can flow into the water collecting bottle; after the conveying is finished, the second driver resets, the water collecting bottle and the water inlet nozzle reset through the elastic force of the first spring, the first driver controls the rotating disc to rotate, the air water separator corresponds to the water outlet nozzle, and the next conveying is waited, so that the water collecting device can sample different depths at the same position, or sample water bodies from different positions at one time, and the water collecting device can return after the water is collected once, and the collecting efficiency of the water collecting device is improved. When the limit that can reach is carried to the water collecting bottle to the water sample in the barrel, remaining water sample can be in next sampling gets into in the water territory, through the decline of adopting water ware, flows from crossing the water hole to the water sample when can not influence next sampling. The rotating disc can be conveniently installed by arranging the fixed sleeve, so that the convenience of the invention is improved. The stop ring is arranged, so that the rotating disc can be conveniently installed and prevented from falling off from the bearing, and the reliability of the bearing is improved. The installation and the limiting of the water collecting bottle can be facilitated by arranging the installation hole, so that the reliability of the water collecting bottle is improved. By arranging the water separator and the water sampler to be matched, different water samples can be separately filled in different water separators, so that the number of times of the unmanned aerial vehicle to move back and forth is reduced, the water sampling efficiency is improved, and the reliability and convenience of the water sampler are improved. The identification mark is carved on the outer surface of the water collecting bottle, so that a subsequent researcher can record and identify corresponding different water samples after detaching the water collecting bottle, and the reliability of the water collecting bottle is improved. The invention can improve the convenience in operation and improve the safety of sampling personnel through remote control.

The invention is further set that the water sampler comprises a barrel with an opening at the top and a barrel cover connected with the barrel, a plurality of water passing holes are arranged on the barrel cover, the connecting rope is fixed at the center of the barrel cover, a circular hole is arranged at the center of the bottom of the barrel, a T-shaped blocking part is arranged at the circular hole in the barrel, the T-shaped blocking part comprises a circular blocking piece and a limiting column fixedly arranged below the circular blocking piece, the diameter of the cross section of the limiting column is smaller than that of the circular hole, the diameter of the circular blocking piece is larger than that of the circular hole, the diameter of the circular blocking piece is smaller than the inner diameter of the barrel, a baffle plate connected with the inner wall of the barrel is arranged above the circular blocking piece in the barrel, a counterweight ring matched with the inner wall of the barrel is arranged above the baffle plate, and an annular groove is arranged above the counterweight ring on the inner wall of the barrel, the annular groove is internally provided with an elastic snap ring for preventing the counterweight ring from displacing, and the bottom of the cylinder body is provided with a filter screen cover for covering the outside of the circular hole.

In the structure, when taking the water sample, put down the connecting rope, the water sampler gets into the aquatic under the effect of gravity, the water sampler descends the in-process, under the pressure effect of water, "T" type barrier unit's circular separation blade upward movement, inside water enters into the barrel from the gap between the circular hole of barrel bottom and the spacing post, then flow out from the water hole, consequently along with the downstream of water sampler, the inside water sample of barrel is also along with becoming the water sample of barrel place degree of depth, when the water sampler descends to specific water layer, a driving motor stop drive, make the water sampler no longer continue downstream, the water sample of barrel splendid attire is the water sample of the place degree of depth when the water sampler stops downstream this moment. The limiting column is used for limiting the movement of the circular baffle plate relative to the circular hole; the baffle plate is used for limiting the position of the T-shaped blocking component and preventing water flow from flushing the T-shaped blocking component to the outside of the cylinder in the descending process of the water sampler. After the water sample is collected, in the process of pulling the water sampler to the water surface through the first driver control connecting rope, the diameter of the circular blocking piece of the T-shaped blocking part is larger than that of the circular hole, so that the existence of the circular blocking piece can effectively prevent the water sample in the hollow sampling cylinder from flowing to the outside of the water sampler, and the larger the acceleration of pulling the water sampler to the water surface is, the larger the pressure difference between the upper surface and the lower surface of the circular blocking piece is, and the tighter the adhesion between the circular blocking piece and the cylinder bottom is; and when the water sampler is pulled to the water surface, water samples at other depths outside the water sampler cannot enter the cylinder, so that the water sampler can accurately and reliably sample water. Through setting up the filter screen panel, can prevent that great biology or non-biology in the sampling process water from entering into inside the barrel, improved sampling efficiency and rate of accuracy. Through the arrangement of the counterweight ring, the water sampler can not only be fast in descending speed in the descending process, but also the gravity center of the water sampler is positioned on the central axis of the water sampler and is not easy to topple. The elastic snap ring is arranged to facilitate the fixation of the counterweight ring, so that the connection strength between the counterweight block and the barrel body is improved, and the reliability of the counterweight device is improved.

The invention is further arranged that the water inlet nozzle is positioned above the central axis of the water collecting bottle.

By adopting the structure, a water sample can conveniently flow into the water collecting bottle, and more water collecting bottles can be loaded, so that the reliability of the water collecting bottle is improved.

The invention is further arranged in that the rotating disc comprises a connecting part connected with the fixed sleeve and a rotating part positioned below the connecting part, the excircle diameter of the connecting part is larger than that of the rotating part, the water separator is arranged in the rotating part, the outer circumferential wall of the connecting part is provided with helical teeth, the shell is provided with a counter bore communicated with the driving cavity in the circumferential direction relative to the rotating disc, the first driver comprises a transmission shaft and a helical gear, the transmission shaft is arranged at the top of the counter bore and connected with the second driving motor, the helical gear is sleeved on the transmission shaft, the transmission shaft is positioned in the counter bore, and the helical gear is meshed with the helical teeth on the connecting part.

In the structure, the second driving motor controls the transmission shaft to drive the bevel gear to rotate, and the bevel gear is meshed with the bevel gear on the rotating disc, so that the rotating disc is driven to rotate, the switching of the water separator is realized, and the convenience and the reliability of the water separator are improved. The arrangement of the counter bore can facilitate the installation of the first driver, thereby improving the stability of the invention.

The invention is further arranged in that the first drivers are provided in two groups and are arranged diagonally relative to the housing.

In the structure, the rotating speed of the rotating disc can be increased by arranging the two groups of first drivers, so that the switching efficiency of the water separator is increased, and the working efficiency of the water separator is improved. Because the rolling disc is circular, consequently, be the diagonal angle setting with two sets of first drivers and can avoid establishing it on the length direction or the width direction of casing and need lengthen or widen the casing to can reduce the volume of casing, reduce the quality of casing, stability when having improved unmanned aerial vehicle flight.

The invention is further configured such that the second driver employs an electric push rod.

By adopting the structure, the stability of the water separator during displacement can be improved, and the reliability of the invention is improved.

The invention is further provided that the check valve comprises a first valve body in threaded connection with the water outlet nozzle, a first ball body arranged in the first valve body, a sealing seat, a first limiting rod, a first strip-shaped limiting plate and a second spring, the sealing seat is fixed in the first valve body and is in adaptive seal with the first ball body, the first limiting rod is fixed with the ball body and is arranged towards the water outlet nozzle, the first strip-shaped limiting plate is fixed with the outer circumferential wall of the first limiting rod, two ends of the second spring are respectively abutted against the end part of the water outlet nozzle and the end surface of the first strip-shaped limiting plate, the diameter of the first limiting rod is smaller than the inner diameter of the water outlet nozzle, the opening and closing mechanism comprises a second valve body in threaded connection with the water inlet nozzle, a second ball body, a second limiting rod, a second strip-shaped limiting plate and a third spring, a water inlet is arranged in the axial direction of the second valve body, one end of the second valve body, which is connected with the water inlet nozzle, is provided with a through hole which is communicated with the water inlet and is in adaptive seal with the second ball body, the diameter of water inlet is greater than the diameter of through-hole, be equipped with the bulge loop in the one end of water inlet mouth orientation water-collecting bottle, the second gag lever post is fixed in the one side of second spheroid orientation bulge loop, second bar limiting plate is fixed in on the outer circumferential wall of second gag lever post, the both ends of third spring support respectively on the terminal surface of bulge loop and on the terminal surface of second bar limiting plate, the diameter of second gag lever post is less than the diameter of bulge loop, the second spheroid has set firmly the actuating lever towards one side of faucet, the actuating lever passes the through-hole and extends to the water inlet mouth outside towards the faucet, the external diameter of second valve body is less than the internal diameter of first valve body.

In the above configuration, the compression ratio of the second spring is larger than the compression ratio of the third spring. The second driver pushes the water collecting bottle to drive the water inlet nozzle to move towards the water outlet nozzle, the driving rod penetrates through the sealing seat to abut against the first ball body, so that the second ball body moves towards the gas collecting bottle and is separated from the through hole, the third spring is in a compression state through extrusion of the second strip-shaped limiting plate and the convex ring, the second driver continues to push the gas collecting bottle, so that the driving rod pushes the first ball body to move towards the water outlet nozzle and is separated from the sealing seat, the second spring is in a compression state through extrusion of the first strip-shaped limiting plate and the water outlet nozzle, the second driver drives the gas collecting bottle to reach the maximum stroke of displacement, so that the inner cavity of the cylinder body is communicated with the inner cavity of the water collecting bottle through the water outlet nozzle, the first valve body, the second valve body and the water inlet nozzle, the pressure in the water collecting bottle is smaller than the pressure in the inner cavity of the cylinder body, so that a water sample flows into the water collecting bottle, and when the water sample in the water collecting bottle is loaded to the limit, the second driver resets, and water bottle and water inlet tap reset through the elastic force of first spring, and first spheroid resets through the elastic force of second spring after sealed with the seal receptacle adaptation, and the second spheroid resets through the elastic force of third spring after sealed with the through-hole adaptation, and the water sampler carries out next water sampling, and first driver control rolling disc rotates, carries out the switching of water knockout drum. The outer diameter of the second valve body is smaller than the inner diameter of the first valve body, so that the end part of the second valve body can be conveniently displaced into the first valve body, a water sample can conveniently flow into the second valve body, and the reliability of the water sample water sampling valve is improved. The second spring adopts a large compression ratio, so that the water sampler can be positioned at a deeper place of a water layer, and the pressure of water can not push the first ball body to move, so that water samples in other water layers can enter the cylinder body, and the reliability of the water sampler is improved.

The invention is further provided with two baffles which are arranged in a cross shape.

By adopting the structure, the T-shaped blocking part can be better limited, and the T-shaped blocking part is prevented from being inclined and being incapable of sealing the round hole, so that the reliability and the stability of the invention are improved.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural disassembly diagram of the sampling mechanism of the present invention.

Fig. 3 is a sectional view of a part of the structure of the present invention.

Fig. 4 is an enlarged view of a structure at a in fig. 3.

Fig. 5 is a schematic sectional view of the check valve of the present invention.

FIG. 6 is a schematic sectional view of the water separator and the opening/closing mechanism of the present invention.

Fig. 7 is a schematic sectional structure view of the water sampler of the present invention.

Fig. 8 is an enlarged view of the structure at B in fig. 7.

Fig. 9 is a schematic sectional structure view of the water collecting mechanism of the present invention.

Fig. 10 is an enlarged view of the structure at C in fig. 9.

Fig. 11 is a schematic sectional view of the housing and the fixing sleeve of the present invention.

The reference numbers in the figures mean: 21-fixing the cover; 22-a housing; 23-water sampler; 221-a through hole; 3-a drive mechanism; 31-a rotating shaft; 32-fixed block; 33-a first drive motor; 311-a reel; 312-connecting rope; 231-a cylinder; 232-cylinder cover; 2321-water passing hole; 2311-round holes; 2312-T-shaped barrier member; 23121-circular flap; 23122-limit posts; 2313-baffle; 2314-counterweight ring; 2315-elastic snap ring; 2316-water outlet; 4-a one-way valve; 222-a mounting cavity; 223-fixing the sleeve; 2231-open slots; 2232-baffle ring; 5-rotating the disc; 51-a bearing; 6-a first driver; 52-mounting holes; 7-a water separator; 71-a water collecting bottle; 72-water inlet nozzle; 8-opening and closing mechanism; 9-a second driver; 521-a first spring; 53-a connecting portion; 54-a rotating part; 531-helical teeth; 61-a second drive motor; 62-a drive shaft; 63-a bevel gear; 41-a first valve body; 42-a first sphere; 43-a sealing seat; 44-a first stop bar; 45-a first bar-shaped limiting plate; 46-a second spring; 81-a second valve body; 82-a second sphere; 83-a second stop bar; 84-a second strip-shaped limiting plate; 85-a third spring; 811-water inlet; 812-a via; 721-convex ring; 821-driving rod.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

The water sampling mechanism shown in fig. 1 to 11 comprises a fixed cover 21, a housing 22 connected with the fixed cover 21, and a water sampler 23 arranged in the housing 22, wherein a through hole 221 is formed in the center of the housing 22, an installation cavity 222 is arranged in the housing 22, a fixed sleeve 223 screwed with the through hole 221 is arranged in the installation cavity 222, the water sampler 23 is located in the fixed sleeve 223, a driving mechanism 3 for controlling the water sampler 23 to enter water is arranged at the top of the housing 22, the driving mechanism 3 comprises a rotating shaft 31, fixed blocks 32 respectively fixed at two ends of the rotating shaft 31, and a first driving motor 33, a reel 311 is sleeved on the rotating shaft 31, a connecting rope 312 connected with the water sampler 23 is wound on the reel 311, a water outlet 2316 is arranged on the outer wall of the bottom end of the water sampler 23, a one-way valve 4 is screwed on the water outlet 2316, an open slot 2231 matched with the water outlet 2316 is formed at the bottom of the fixed sleeve 223, be equipped with on the outer circumferential wall of fixed cover 223 and be located the fender ring 2232 of installation cavity 222 roof below, it is equipped with the rolling disc 5 to lie in on the fixed cover 223 and keep off between ring 2232 and the installation cavity 222 roof, link to each other through bearing 51 between rolling disc 5 and the fixed cover 223, the bottom of rolling disc 5 is seted up flutedly with the position department that through hole 221 corresponds, be equipped with on the casing 22 and be used for driving the first driver 6 of rolling disc 5 pivoted, the position department that lies in same horizontal plane with faucet 2316 on the outer circumferential wall of rolling disc 5 has seted up mounting hole 52, be equipped with water knockout drum 7 in the mounting hole 52, water knockout drum 7 is including the collector bottle 71 that lies in mounting hole 52 and the inlet nozzle 72 that is linked together and runs through mounting hole 52 to the recess with collector bottle 71, the inlet nozzle 72 front end is equipped with the starting and stopping mechanism 8 that is used for opening check valve 4 and collector bottle 71 and is linked together, the water distributor 7 is provided with a plurality of water distributors 7 which are circumferentially arranged relative to the center of the rotating disc 5, wherein the outer side of the water distributor 7 corresponding to the water outlet nozzle 2316 is provided with a second driver 9 for pushing the water distributor 7 to move towards the water outlet nozzle 2316, and one end of the water inlet nozzle 72 positioned in the mounting hole 52 is sleeved with a first spring 521, the two ends of the first spring 521 respectively abut against the end surface of the water collecting bottle 71 and the inner wall of the mounting hole 52.

In the above structure, the power supply device is provided on the side of the housing 22 opposite to the second driver 9, thereby ensuring that the center of gravity of the housing 22 is located at the center thereof. The invention is fixed at the bottom of an unmanned aerial vehicle or on other conveying tools for remote control operation, so that the convenience of a sampler can be improved, the sampler can move to an open water area, a region with a severe terrain and unknown heavy pollution risk, and a region where personnel and ships are difficult to enter is sampled, the operation risk can be reduced, and the operation task is safe and simple. The conveying tool provided with the sampling mechanism is remotely controlled to a water area needing sampling, then the first driving motor 33 is controlled to be started through remote control, the first driving motor 33 controls the rotating shaft 31 to drive the reel 311 to rotate, so that the water sampler 23 descends to a specified depth relative to the through hole 221 and stands for a period of time, after water enters the water sampler 23, the first driving motor 33 drives the rotating shaft 31 to drive the reel 311 to rotate reversely, the water sampler 23 ascends to a reset position relative to the fixing sleeve 223, the water collecting bottle 71 is pushed by the second driver 9 to drive the water inlet nozzle 72 to displace towards the water outlet nozzle 2316 until the opening and closing mechanism 8 opens the one-way valve 4, the water collecting bottle 71 is communicated with the cylinder 231, and the first spring 521 is in a compression state, so that water samples in the cylinder 231 can flow into the water collecting bottle 71; after the conveying is finished, the second driver 9 resets, the water collecting bottle 71 and the water inlet nozzle 72 reset through the elastic force of the first spring 521, the first driver 6 controls the rotating disc 5 to rotate, so that the air water separator 7 corresponds to the water outlet nozzle 2316, the next conveying is waited, and therefore the water sampler can sample different depths at the same position or sample water from different positions at one time, the water sampler can return after the water sampler is not required to be collected once, and the collecting efficiency of the water sampler is improved. When the water sample in the cylinder 231 is conveyed to the limit which can be reached in the water collecting bottle 71, the water sample remained in the cylinder 231 flows out from the water through hole 2321 through the descending of the water sampler 23 when entering the water area in the next sampling, so that the water sample in the next sampling cannot be influenced. The installation of the rotating disc 5 can be facilitated by providing the fixing sleeve 223, thereby improving the convenience of the present invention. The retainer 2232 facilitates the installation of the rotary disk 5 and prevents it from falling off the bearing 51, thereby improving the reliability of the present invention. The installation and the limiting of the water collecting bottle 71 can be facilitated by arranging the installation hole 52, so that the reliability of the water collecting bottle is improved. By arranging the water separator 7 to be matched with the water sampler 23, different water samples can be respectively arranged in different water separators 7, so that the number of times of the unmanned aerial vehicle to move back and forth is reduced, the water sampling efficiency is improved, and the reliability and convenience of the unmanned aerial vehicle are improved. The identification mark is carved on the outer surface of the water collecting bottle 71, so that a subsequent researcher can record and identify corresponding different water samples after detaching the water collecting bottle 71, and the reliability of the water collecting device is improved. The invention can improve the convenience in operation and improve the safety of sampling personnel through remote control.

In this embodiment, the water sampler 23 includes a barrel 231 with an open top and a barrel cover 232 connected to the barrel 231, the barrel cover 232 is provided with a plurality of water through holes 2321, the connecting rope 312 is fixed at the center of the barrel cover 232, the center of the bottom of the barrel 231 is provided with a circular hole 2311, a T-shaped blocking part 2312 is arranged in the barrel 231 at the circular hole 2311, the T-shaped blocking part 2312 includes a circular blocking piece 23121 and a limiting column 23122 fixedly arranged below the circular blocking piece 23121, the cross-sectional diameter of the limiting column 23122 is smaller than the diameter of the circular hole 2311, the diameter of the circular blocking piece 23121 is larger than the diameter of the circular hole 2311, the diameter of the circular blocking piece 23121 is smaller than the inner diameter of the barrel 231, a blocking plate 2313 connected to the inner wall of the barrel 231 is arranged above the circular blocking piece 23121 in the barrel, a counterweight ring 2314 adapted to the inner wall of the barrel 231 is arranged above the blocking plate 2313, an annular groove is formed in the inner wall of the cylinder 231 above the counterweight ring 2314, an elastic clamping ring 2315 used for preventing the counterweight ring 2314 from displacing is arranged in the annular groove, and a filtering net cover used for covering the outside of the circular hole 2311 is arranged at the bottom of the cylinder 231.

In the structure, when a water sample is taken, the connecting rope 312 is put down, the water sampler 23 enters water under the action of gravity, and when the water sampler 23 descends, the circular blocking piece 23121 of the T-shaped blocking part 2312 moves upwards under the action of the pressure of the water, the water enters the cylinder 231 from the gap between the circular hole 2311 at the bottom of the cylinder 231 and the limiting column 23122 and then flows out from the water through hole 2321, so that the water sample inside the cylinder 231 also becomes the water sample at the depth of the cylinder 231 along with the downward movement of the water sampler 23, when the water sampler 23 descends to a specific water layer, the first driving motor 33 stops driving, the water sampler 23 does not continue to move downwards, and the water sample contained in the cylinder 231 is the water sample at the depth when the water sampler 23 stops moving downwards. The limiting posts 23122 function to limit the movement of the circular flaps 23121 relative to the circular holes 2311; the baffle 2313 serves to limit the position of the T-shaped blocking member 2312 and prevent the T-shaped blocking member 2312 from being flushed out of the cylinder 231 by water flow during the descending process of the water sampler 23. After the water sample collection is finished, in the process of pulling the water sampler 23 to the water surface by controlling the connecting rope 312 through the first driver 6, because the diameter of the circular baffle 23121 of the T-shaped baffle 2312 is larger than that of the circular hole 2311, the existence of the circular baffle 23121 can effectively prevent the water sample in the hollow sampling cylinder 231 from flowing to the outside of the water sampler 23, and the larger the acceleration of pulling the water sampler 23 to the water surface is, the larger the pressure difference between the upper surface and the lower surface of the circular baffle 23121 is, and the tighter the adhesion of the circular baffle 23121 and the cylinder bottom is; therefore, when the cylinder 231 is filled with the collected water sample at a specific depth and the water sampler 23 is pulled to the water surface, the water samples at other depths outside the water sampler 23 cannot enter the cylinder 231, so that the water sample collected by the water sampler 23 is accurate and reliable. Through setting up the filter screen panel, can prevent that great biology or non-biology in the sampling in-process water from entering into inside barrel 231, improved sampling efficiency and rate of accuracy. By arranging the counterweight ring 2314, the water sampler 23 can not only be quickly descended in the descending process, but also the gravity center of the water sampler 23 is positioned on the central axis of the water sampler, so that the water sampler is not easy to topple. The elastic snap ring 2315 is arranged to facilitate the fixation of the counterweight ring 2314, so that the connection strength between the counterweight block and the cylinder 231 is improved, and the reliability of the invention is improved.

In this embodiment, the water inlet nozzle 72 is located above the central axis of the water collecting bottle 71.

By adopting the structure, the water sample can conveniently flow into the water collecting bottle 71, and more water collecting bottles 71 can be loaded, so that the reliability of the water collecting device is improved.

In this embodiment, the rotating disc 5 includes the connecting portion 53 that links to each other with fixed cover 223 and is located the rotation portion 54 of connecting portion 53 below, the excircle diameter of connecting portion 53 is greater than the excircle diameter of rotation portion 54, the water knockout drum 7 is located in rotation portion 54, be equipped with skewed tooth 531 on the outer circumferential wall of connecting portion 53, set up the counter bore that is linked together with the drive chamber on the relative rotating disc 5's of casing 22 circumferential direction, first driver 6 is including establishing the transmission shaft 62 that second driving motor 61 and second driving motor 61 at the counter bore top link to each other and establish the helical gear 63 on transmission shaft 62, transmission shaft 62 is located the counter bore, and helical gear 63 meshes with skewed tooth 531 on connecting portion 53 mutually.

In the above structure, the second driving motor 61 controls the transmission shaft 62 to drive the helical gear 63 to rotate, and the helical gear 63 is engaged with the helical teeth 531 on the rotating disc 5, so as to drive the rotating disc 5 to rotate, thereby realizing the switching of the water separator 7 and improving the convenience and reliability of the invention. The mounting of the first driver 6 can be facilitated by providing a counter bore, thereby improving the stability of the invention.

In this embodiment, two sets of the first drivers 6 are provided and are disposed diagonally with respect to the housing 22.

In the structure, the rotating speed of the rotating disc 5 can be increased by arranging the two groups of first drivers 6, so that the switching efficiency of the water separator 7 is increased, and the working efficiency of the water separator is improved. Because rolling disc 5 is circular, consequently, be the diagonal setting with two sets of first drivers 6 and can avoid establishing it on the length direction or the width direction of casing 22 and need lengthen or widen casing 22 to can reduce casing 22's volume, reduce casing 22's quality, improve the stability when unmanned aerial vehicle flies.

In this embodiment, the second driver 9 is an electric push rod.

By adopting the structure, the stability of the water separator 7 during displacement can be improved, thereby improving the reliability of the invention.

In this embodiment, the check valve 4 includes a first valve body 41 screwed with the water outlet nozzle 2316, a first ball 42 disposed in the first valve body 41, a sealing seat 43, a first limit rod 44, a first strip-shaped limit plate 45, and a second spring 46, the sealing seat 43 is fixed in the first valve body 41 and is adapted to the first ball 42 for sealing, the first limit rod 44 is fixed with the ball and is disposed toward the water outlet nozzle 2316, the first strip-shaped limit plate 45 is fixed with an outer circumferential wall of the first limit rod 44, two ends of the second spring 46 respectively abut against an end of the water outlet nozzle 2316 and an end surface of the first strip-shaped limit plate 45, a diameter of the first limit rod 44 is smaller than an inner diameter of the water outlet nozzle 2316, the opening and closing mechanism 8 includes a second valve body 81 screwed in the water inlet nozzle 72, a second ball 82, a second limit rod 83, a second strip-shaped limit plate 84, and a third spring 85, a water inlet 811 is disposed in an axial direction of the second valve body 81, one end of the second valve body 81 connected with the water inlet nozzle 72 is provided with a through hole 812 which is communicated with the water inlet 811 and is matched and sealed with the second ball 82, the diameter of the water inlet 811 is larger than that of the through hole 812, a convex ring 721 is arranged in one end of the water inlet nozzle 72 facing the water collecting bottle 71, the second limiting rod 83 is fixed on one side of the second ball 82 facing the convex ring 721, the second strip-shaped limiting plate 84 is fixed on the outer circumferential wall of the second limiting rod 83, two ends of the third spring 85 respectively abut against the end surface of the convex ring 721 and the end surface of the second strip-shaped limiting plate 84, the diameter of the second limiting rod 83 is smaller than that of the convex ring 721, one side of the second ball 82 facing the water outlet nozzle 2316 is fixedly provided with a driving rod 821, the driving rod 821 extends out of the water inlet nozzle 72 through the through hole 812 toward the water outlet nozzle 2316, and the outer diameter of the second valve body 81 is smaller than the inner diameter of the first valve body 41.

In the above configuration, the compression ratio of the second spring 46 is larger than that of the third spring 85. The second driver 9 pushes the water collecting bottle 71 to drive the water inlet nozzle 72 to displace towards the water outlet nozzle 2316, the driving rod 821 passes through the sealing seat 43 to abut against the first ball 42, so that the second ball 82 displaces towards the gas collecting bottle to be separated from the through hole 812, the third spring 85 is in a compression state by the extrusion of the second strip-shaped limiting plate 84 and the convex ring 721, the second driver 9 continues to push the gas collecting bottle, so that the driving rod 821 pushes the first ball 42 to displace towards the water outlet nozzle 2316 to be separated from the sealing seat 43, the second spring 46 is in a compression state by the extrusion of the first strip-shaped limiting plate 45 and the water outlet nozzle 2316, the second driver 9 drives the gas collecting bottle to reach the maximum stroke of displacement, so that the inner cavity of the cylinder 231 is communicated with the inner cavity of the water collecting bottle 71 through the water outlet nozzle 2316, the first valve body 41, the second valve body 81 and the water inlet nozzle 72, the pressure in the water collecting bottle 71 is smaller than that of the inner cavity of the cylinder 231, therefore, a water sample flows into the water collecting bottle 71, when the water sample in the water collecting bottle 71 is loaded to the limit, the second driver 9 resets, the water collecting bottle 71 and the water inlet nozzle 72 reset through the elastic force of the first spring 521, the first ball body 42 resets through the elastic force of the second spring 46 and then is matched and sealed with the sealing seat 43, the second ball body 82 resets through the elastic force of the third spring 85 and then is matched and sealed with the through hole 812, the water sampler 23 carries out next water sampling, the first driver 6 controls the rotating disc 5 to rotate, and the water segregator 7 is switched. The outer diameter of the second valve body 81 is smaller than the inner diameter of the first valve body 41, so that the end of the second valve body 81 can be conveniently displaced into the first valve body 41, the water sample can conveniently flow into the second valve body 81, and the reliability of the invention is improved. The second spring 46 adopts a large compression ratio, so that the water sampler 23 can be positioned at a place with a deeper water layer, and the pressure of water can not push the first ball 42 to displace, so that water samples in other water layers can enter the cylinder 231, and the reliability of the invention is improved.

In this embodiment, two baffles 2313 are arranged and are arranged in a cross shape.

By adopting the structure, the T-shaped blocking part 2312 can be better limited, the situation that the T-shaped blocking part 2312 is inclined and cannot seal the circular hole 2311 is prevented, and therefore the reliability and the stability of the invention are improved.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and those modifications and variations assumed in the above are also considered to be within the protective scope of the present invention.

Claims

1. The utility model provides a water sampling mechanism which characterized in that: the water sampler comprises a fixed cover, a shell connected with the fixed cover and a water sampler arranged in the shell, wherein a through hole is formed in the center of the shell, an installation cavity is formed in the shell, a fixed sleeve connected with the through hole in a threaded manner is arranged in the installation cavity, the water sampler is arranged in the fixed sleeve, a driving mechanism used for controlling the water sampler to enter water is arranged at the top of the shell, the driving mechanism comprises a rotating shaft, fixed blocks and a first driving motor, the fixed blocks and the first driving motor are respectively fixed at two ends of the rotating shaft, a reel is sleeved on the rotating shaft, a connecting rope connected with the water sampler is wound on the reel, a water outlet nozzle is arranged on the outer wall of the bottom end of the water sampler, a one-way valve is screwed on the water outlet nozzle, an open slot matched with the water outlet nozzle is formed in the bottom of the fixed sleeve, a baffle ring located below the top wall of the installation cavity is arranged on the outer circumferential wall of the fixed sleeve, and a rotating disc is sleeved between the baffle ring and the top wall of the installation cavity on the fixed sleeve, the water distributor is characterized in that the rotating disc is connected with the fixed sleeve through a bearing, a groove is formed in the bottom of the rotating disc and corresponds to the through hole, a first driver used for driving the rotating disc to rotate is arranged on the shell, a mounting hole is formed in the position, located on the same horizontal plane with the water outlet nozzle, of the outer circumferential wall of the rotating disc, a water distributor is arranged in the mounting hole and comprises a water collecting bottle located in the mounting hole and a water inlet nozzle communicated with the water collecting bottle and penetrating through the mounting hole to the groove, an opening and closing mechanism used for opening a one-way valve and communicated with the water collecting bottle is arranged at the front end of the water inlet nozzle, the water distributor is provided with a plurality of water distributors and is circumferentially arranged relative to the center of the rotating disc, a second driver used for pushing the water distributor to move towards the water outlet nozzle is arranged on the outer side of the water distributor corresponding to the water outlet nozzle, and a first spring with two ends respectively abutted against the end face of the water collecting bottle and the inner wall of the mounting hole is sleeved at one end of the water inlet nozzle located in the mounting hole, the water sampler comprises a barrel with an opening at the top and a barrel cover connected with the barrel, wherein the barrel cover is provided with a plurality of water passing holes, the connecting rope is fixed at the center of the barrel cover, the center of the bottom of the barrel is provided with a circular hole, a T-shaped blocking part is arranged in the barrel at the circular hole, the T-shaped blocking part comprises a circular blocking piece and a limiting column fixedly arranged below the circular blocking piece, the diameter of the cross section of the limiting column is smaller than that of the circular hole, the diameter of the circular blocking piece is larger than that of the circular hole, the diameter of the circular blocking piece is smaller than the inner diameter of the barrel, a baffle plate connected with the inner wall of the barrel is arranged above the circular blocking piece in the barrel, a counterweight ring matched with the inner wall of the barrel is arranged above the baffle plate, an annular groove is arranged above the counterweight ring on the inner wall of the barrel, and an elastic snap ring for preventing the displacement of the counterweight ring is arranged in the annular groove, the bottom of the cylinder body is provided with a filter screen cover used for covering the outside of the round hole.

2. The water sampling mechanism of claim 1, wherein: the rolling disc includes the connecting portion that link to each other with fixed cover and is located the rotation portion of connecting portion below, the excircle diameter of connecting portion is greater than the excircle diameter of rotation portion, the water knockout drum is located in the rotation portion, be equipped with the skewed tooth on the outer circumferential wall of connecting portion, set up the counter bore that is linked together with the drive chamber in the relative rolling disc's of casing circumference direction, first driver establishes the epaxial helical gear of transmission including the transmission shaft and the cover that second driving motor that links to each other at counter bore top and second driving motor, the transmission shaft is located the counter bore, and the helical gear meshes with the skewed tooth on the connecting portion mutually.

3. The water sampling mechanism of claim 2, wherein: the first driver is provided with two groups and is arranged diagonally relative to the shell.

4. The water sampling mechanism of claim 2, wherein: the second driver adopts an electric push rod.

5. The water sampling mechanism of claim 2, wherein: the check valve comprises a first valve body in threaded connection with a water outlet nozzle, a first ball body arranged in the first valve body, a sealing seat, a first limiting rod, a first strip-shaped limiting plate and a second spring, wherein the sealing seat is fixed in the first valve body and is in adaptive seal with the first ball body, the first limiting rod is fixed with the ball body and is arranged towards the water outlet nozzle, the first strip-shaped limiting plate is fixed with the outer circumferential wall of the first limiting rod, the two ends of the second spring are respectively supported against the end face of the end part of the water outlet nozzle and the end face of the first strip-shaped limiting plate, the diameter of the first limiting rod is smaller than the inner diameter of the water outlet nozzle, the opening and closing mechanism comprises a second valve body in threaded connection with the water inlet nozzle, a second ball body, a second limiting rod, a second strip-shaped limiting plate and a third spring, the water inlet is arranged in the axial direction of the second valve body, one end, which is connected with the water inlet nozzle, is provided with a through hole which is communicated with the water inlet and is in adaptive seal with the second ball body, the diameter of water inlet is greater than the diameter of through-hole, be equipped with the bulge loop in the one end of water inlet mouth orientation water-collecting bottle, the second gag lever post is fixed in the one side of second spheroid orientation bulge loop, second bar limiting plate is fixed in on the outer circumferential wall of second gag lever post, the both ends of third spring support respectively on the terminal surface of bulge loop and on the terminal surface of second bar limiting plate, the diameter of second gag lever post is less than the diameter of bulge loop, the second spheroid has set firmly the actuating lever towards one side of faucet, the actuating lever passes the through-hole and extends to the water inlet mouth outside towards the faucet, the external diameter of second valve body is less than the internal diameter of first valve body.

6. The water sampling mechanism of claim 1, wherein: the baffle is equipped with two, and is the cross setting.