CN117825106A

CN117825106A - Water quality sampling device

Info

Publication number: CN117825106A
Application number: CN202410008670.1A
Authority: CN
Inventors: 谢春香; 顾明
Original assignee: Huizhou Meize Environmental Protection Technology Co ltd
Current assignee: Huizhou Meize Environmental Protection Technology Co ltd
Priority date: 2024-01-04
Filing date: 2024-01-04
Publication date: 2024-04-05

Abstract

The application discloses a water quality sampling device, which comprises a floating assembly, a plurality of sampling assemblies, a lifting mechanism and a locking mechanism; the whole device is suitable for floating on the water surface to be sampled through the floating component, a plurality of sampling components are arranged at equal intervals along the circumferential direction of the floating component in the water area below the floating component, and the lifting mechanism is arranged on the floating component and is matched with the sampling components, so that the sampling components are driven by the lifting mechanism to vertically move under the water surface; the locking mechanism is arranged on the floating assembly; the locking mechanism is adapted to lock each sampling assembly in sequence during the downward movement of the sampling assembly so that the plurality of sampling assemblies are positioned at different heights below the water surface. The beneficial effects of this application are: the multiple sampling assemblies can simultaneously sample the water quality of the same water area depth for multiple times; meanwhile, the water quality of different water depths can be sampled through the cooperation of the locking mechanism. Compared with the traditional sampling mode, the water quality sampling efficiency can be effectively improved.

Description

Water quality sampling device

Technical Field

The invention relates to the technical field of water quality detection, in particular to a water quality sampling device.

Background

The sewage treatment is a process for purifying sewage to meet the water quality requirement of being discharged into a certain water body or reused, is widely applied to various fields of construction, agriculture, traffic, energy, petrochemical industry, environmental protection, urban landscapes, medical treatment, catering and the like, is classified according to sewage sources, is generally divided into production sewage treatment and domestic sewage treatment, the production sewage comprises industrial sewage, agricultural sewage, medical sewage and the like, and the domestic sewage is sewage generated in daily life and is a complex mixture of various inorganic matters and organic matters.

For domestic sewage, long-time monitoring is needed when the domestic sewage is treated, sampling is needed during monitoring so as to ensure symptomatic drug delivery, the current sewage sampling equipment generally drives a bottle body to move downwards in the sewage through a lifting device, and when the bottle body descends to a certain position, a water pump is started again to pump water for sampling, but the method cannot conduct layered sampling on the sewage, when the sewage needs to be subjected to layered sampling, the water pump needs to be turned off again and turned on, time of workers is wasted, and the sampled sample in the bottle body needs to be taken out and then the height of the sample is readjusted for sampling.

Disclosure of Invention

One of the objects of the present invention is to provide a water sampling device that can solve at least one of the above-mentioned drawbacks of the prior art.

In order to achieve the above purpose, the technical scheme adopted in the application is as follows: a water quality sampling device comprises a floating assembly, a plurality of sampling assemblies, a lifting mechanism and a locking mechanism; the whole device is suitable for floating on the water surface to be sampled through the floating component, a plurality of sampling components are arranged at equal intervals along the circumferential direction of the floating component in the water area below the floating component, and the lifting mechanism is arranged on the floating component and is matched with the sampling components, so that the sampling components vertically move under the water surface under the driving of the lifting mechanism; the locking mechanism is mounted to the float assembly; the locking mechanism is suitable for locking the positions of the sampling assemblies in sequence in the process of downward movement of the sampling assemblies so that a plurality of sampling assemblies are positioned at different heights below the water surface; and when the position of the sampling assembly is locked, the lifting mechanism is suitable for driving the locked sampling assembly to perform water sample extraction.

Preferably, the sampling assembly comprises a bottle body and a piston rod; the bottle body is matched with the lifting mechanism, and the piston rod is hermetically and slidably arranged on the bottle body and matched with the locking mechanism; when the sampling assembly moves downwards to a set position, the locking mechanism is suitable for being in limit fit with the corresponding piston rod so that the piston rod is locked; further, under the drive of the lifting mechanism, the bottle body continuously moves downwards relative to the piston rod so as to extract the water sample; after the piston rod moves to an extreme position relative to the bottle, the bottle remains stationary.

Preferably, the lifting mechanism comprises a first driving source, a screw rod, a plurality of sliding sleeves and a plurality of traction seats; the first driving source is fixedly arranged on the floating assembly, and the screw rod is vertically arranged at the output end of the first driving source and extends into the water; the sliding sleeves are all matched and installed on the screw rod, and the sliding sleeves are vertically matched with guide rails fixed on the floating assembly in a guiding manner; one end of each traction seat is sleeved with the corresponding sliding sleeve through a clutch structure, and the other end of each traction seat is connected with the corresponding bottle body; when the sampling assembly moves in position, the first driving source drives the sliding sleeve to drive the sampling assembly to move downwards through the lead screw; when the sampling assembly reaches a set depth and water sample extraction is completed, the clutch structure between the sliding sleeve and the traction seat corresponding to the sampling assembly is in a free state, so that the sliding sleeve synchronously rotates along with the screw rod relative to the traction seat, and the sampling assembly is locked in the holding position.

Preferably, the traction seat is sleeved on the inner side wall of the sliding sleeve, and an installation cavity is formed in the radial direction; the clutch structure comprises a clamping groove arranged on the outer side of the sliding sleeve and a clutch block which is elastically and slidably arranged in the mounting cavity through a spring; when the clutch block is clamped with the clamping groove under the elasticity of the spring, the clutch structure is in a meshed state, so that the traction seat can move along the axial direction of the screw rod along with the sliding sleeve; when the clutch block is separated from the clamping groove, the clutch structure is in a free state, so that the sliding sleeve synchronously rotates along with the screw rod relative to the traction seat.

Preferably, the locking mechanism comprises a second driving source, a plurality of locking plates, a limiting assembly and a plurality of traction assemblies; the second driving source is fixedly arranged on the floating assembly; the limiting assembly is fixedly arranged on the floating assembly and extends into a water area; the locking plates are correspondingly and rotatably arranged at the top of the piston rods, the traction assembly is rotatably arranged on the floating assembly at equal intervals along the circumferential direction of the floating assembly, the input end of the traction assembly is in transmission connection with the second driving source, and the output end of the traction assembly is matched with the first end of the locking plates; when the sampling assembly moves down to a set position, the second driving source is suitable for driving the traction assembly to drive the locking plate to rotate around the piston rod, and then the second end of the locking plate is in limiting clamping with the limiting assembly in the vertical direction.

Preferably, the limiting assembly comprises a plurality of arc-shaped plates with arc-shaped sections and vertically extending; each arc plate is arranged at equal intervals along the circumferential direction of the floating assembly, and is concentric with the corresponding piston rod of the sampling assembly; a plurality of limiting plates are arranged on one side, close to the piston rod, of the arc-shaped plate at equal intervals along the vertical direction, limiting grooves are formed between adjacent limiting plates, and the length of the limiting plates corresponding to the arc-shaped plates is different; therefore, each locking plate is sequentially clamped with the corresponding limiting groove along with the increase of the rotation angle, and each sampling assembly is locked at different depth positions.

Preferably, the floating assembly is provided with a plurality of arc-shaped grooves vertically penetrating along the circumferential direction, and the arc-shaped grooves are concentric with the corresponding piston rods; the traction assembly comprises an upper swing arm, a lower swing arm and a traction rod; the upper swing arm is rotatably arranged at the upper end of the floating assembly and concentric with the corresponding piston rod, and the lower swing arm is fixed on the corresponding locking plate; the traction rod penetrates through the arc-shaped groove, the upper end of the traction rod is connected with the upper swing arm, and the lower swing arm is vertically and slidably connected with the traction rod; the upper swing arm is suitable for being driven by the second driving source to rotate around the installation position, and then the lower swing arm is driven by the traction rod to drive the locking plate to rotate.

Preferably, a main gear is mounted at the output end of the second driving source, driving gears are correspondingly mounted on the upper swing arms, and a gear ring is rotatably mounted on the floating assembly; the main gear and the driving gears are meshed with the gear ring, so that the second driving source drives the gear ring to be meshed with the driving gears through the main gear, and further drives the upper swing arms to synchronously rotate.

Preferably, a plurality of cup holders are arranged at the top of the floating assembly, the cup holders are used for placing collecting bottles for collecting sample water, and each bottle body is communicated with the corresponding cup holder through a hose; when all the locking plates are clamped with the corresponding limiting grooves, the screw rods drive each bottle body to vertically move upwards relative to the corresponding piston rods, and then sampling water in the bottle bodies is discharged into the corresponding collecting bottles through the hoses; or after the water quality of all the sampling assemblies is sampled, the locking plate is in disengagement with the limiting assembly under the driving of the traction assembly, and then each sampling assembly vertically moves upwards to the lower end of the piston rod, which is propped against the floating assembly, under the driving of the screw rod, so that the sampling water in the bottle body is discharged into the corresponding collecting bottle through the hose.

Preferably, the floating assembly comprises an upper floating seat and a lower floating seat; the upper floating seat is connected with the lower floating seat, and the sampling assembly is suitable for vertically moving between the upper floating seat and the lower floating seat.

Compared with the prior art, the beneficial effect of this application lies in:

(1) According to the water quality sampling device, the water quality at the same water area depth can be sampled for multiple times simultaneously by arranging the plurality of sampling assemblies; simultaneously, the water quality of different water depths can be sampled through the cooperation of the locking mechanism. Compared with the traditional sampling mode, the water quality sampling efficiency can be effectively improved.

(2) The whole device can be directly placed in the water area to be detected, so that continuous monitoring of the water area can be realized.

Drawings

Fig. 1 is a schematic diagram of the main structure of the present invention.

Fig. 2 is a schematic bottom structure of the floating seat of the present invention.

Fig. 3 is a schematic main structure of the locking structure of the present invention.

Fig. 4 is a schematic main structure of the locking mechanism of the present invention.

Fig. 5 is a schematic main structure of the lifting mechanism of the present invention.

Fig. 6 is a schematic diagram of a connection structure between an arc portion and an arc groove according to the present invention.

FIG. 7 is a schematic cross-sectional view of the clutch structure of the present invention.

Fig. 8 is a schematic side view of the present invention.

In the figure: the lower floating seat 1, the upper floating seat 2, the bottle body 3, the piston rod 4, the lifting mechanism 5, the first driving source 51, the screw rod 52, the sliding sleeve 53, the traction seat 54, the guide rail 55, the limiting component 6, the arc-shaped plate 61, the limiting plate 62, the locking plate 63, the locking mechanism 7, the second driving source 71, the main gear 72, the gear ring 73, the driving gear 74, the clutch structure 8, the spring 81, the clutch block 82, the clamping groove 83, the traction component 9, the upper swing arm 91, the lower swing arm 92, the arc-shaped groove 93, the traction rod 94, the locking structure 10, the limiting groove 101, the arc-shaped part 102, the cup holder 11, the collecting bottle 12 and the hose 13.

Detailed Description

The present application will be further described with reference to the specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present application, it should be noted that, for the azimuth terms such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific protection scope of the present application that the device or element referred to must have a specific azimuth configuration and operation, as indicated or implied.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

One preferred embodiment of the present application, as shown in fig. 1-8, is a water sampling device comprising a floatation assembly, a plurality of sampling assemblies, a lifting mechanism 5, and a locking mechanism 7. When the water quality of the target water area is monitored, the whole device can be placed on the water surface of the target water area through the floating component to float. The plurality of sampling assemblies are arranged at equal intervals along the circumferential direction of the floating assembly in the water area below the floating assembly. The lifting mechanism 5 is mounted on the floating assembly and cooperates with the sampling assembly so that the sampling assembly moves vertically under the water surface under the drive of the lifting mechanism 5. A locking mechanism 7 is mounted to the float assembly, the locking mechanism 7 being capable of locking the position of a plurality of sampling assemblies.

The specific working modes of the device are two.

First kind: simultaneously detecting the water quality of the same water area depth; the lifting mechanism 5 can drive a plurality of sampling components to synchronously move vertically down to the set water depth; then locking mechanical system 7 can carry out the position locking to a plurality of sampling components simultaneously, and then through elevating system 5's continuation drive, a plurality of sampling components will carry out the water sample extraction in same waters degree of depth to the realization is to the multiple sampling of same waters degree of depth.

Second kind: simultaneously, detecting water quality of different water areas; the lifting mechanism 5 can drive a plurality of sampling assemblies to vertically move downwards at the same time, and the locking mechanism 7 can lock the positions of the sampling assemblies when the first water depth is reached; meanwhile, the lifting mechanism 5 can drive the rest sampling components to move vertically downwards, and in the process, the lifting mechanism 5 can extract water samples from the sampling components with locked positions. As different water depths are reached, the locking mechanism 7 can lock the positions of the different sampling assemblies in sequence until all the sampling assemblies reach the set water depths and water sample extraction is completed.

It should be noted that in order to improve accuracy of the detection result when sampling and detecting water quality, it is generally required to sample the same water depth multiple times and sample different water depths according to the depth gradient. Based on this, the present embodiment can implement the above sampling process by the first mode or the second mode, respectively.

If the water quality sampling device is realized in the first mode, the plurality of sampling assemblies synchronously move down to the same water area depth in one sampling process, the water area depth sampled for multiple times is different, and therefore the water quality sampling for multiple times of each depth gradient is realized. If the water quality sampling device is realized in the second mode, namely, the plurality of sampling components can move down to different depths in one sampling process, and through multiple sampling, multiple water quality sampling of different water depths can be realized.

Compare traditional mode, this application can place whole device in the monitoring aquatic to realize long-time continuous monitoring. And according to the difference of detection requirement, this device can work in different modes, and then can effectually improve the efficiency of quality of water sample.

It should also be appreciated that the specific number of sampling components may be selected according to implementation requirements, for example, as shown in fig. 5, the number of sampling components in this embodiment is three, and the following sampling components are also illustrated by three. Meanwhile, for convenience of explanation, the following description will be made with the device using the second operation mode described above.

Specifically, as shown in fig. 5, the sampling assembly includes a bottle body 3 and a piston rod 4. The bottle body 3 is matched with the lifting mechanism 5, and the piston rod 4 is hermetically and slidably arranged on the bottle body 3 and matched with the locking mechanism 7. When the sampling assembly moves down to a set position, the locking mechanism 7 can be in limit fit with the corresponding piston rod 4, so that the movement of the piston rod 4 in the vertical direction is locked; and then under the drive of elevating system 5, bottle 3 will continue to move down with piston rod 4 to make piston rod 4 seal the slip in bottle 3, and then can be with the water sample extraction of current waters degree of depth to bottle 3. After the piston rod 4 has been moved to an extreme position with respect to the bottle 3, the bottle 3 will remain stationary by the restriction of the vertical movement of the bottle 3 by the piston rod 4.

It will be appreciated that the vertical position of the bottle 3 is continually changing during the sampling of the water sample by the sampling assembly, which will result in the water sample being sampled by the sampling assembly to be a water sample within a range of depths. Of course, in order to reduce the depth range of water sample collection, the relative sliding distance between the piston rod 4 and the bottle body 3 can be shortened as much as possible; the diameter of the bottle 3 can be correspondingly increased to ensure that sufficient water sample is collected with a short displacement of the piston rod 4.

In this embodiment, as shown in fig. 1, 4 and 5, the lifting mechanism 5 includes a first driving source 51, a screw 52, a plurality of sliding sleeves 53 corresponding to the number of sampling components, and a plurality of traction seats 54. The first driving source 51 is fixedly arranged on the floating assembly, and the screw rod 52 is vertically arranged at the output end of the first driving source 51 and extends into the water; the sliding sleeves 53 are all matched and installed on the screw rods 52, and the sliding sleeves 53 are vertically matched with guide rails 55 fixed on the floating assembly; one end of each traction seat 54 is sleeved with the corresponding sliding sleeve 53 through the clutch structure 8, and the other end of each traction seat 54 is connected with the corresponding bottle body 3. When the sampling assembly moves in position, the first driving source 51 drives the sliding sleeve 53 to drive the sampling assembly to move downwards through the screw rod 52. When the sampling assembly reaches the set depth and water sample extraction is completed, the clutch structure 8 between the sliding sleeve 53 and the traction seat 54 corresponding to the sampling assembly is in a free state, so that the sliding sleeve 53 synchronously rotates with the screw rod 52 relative to the traction seat 54, and the sampling assembly is kept in position and locked.

It will be appreciated that the specific structure and operation principle of the first driving source 51 are well known to those skilled in the art, and the common first driving source 51 includes a motor, a rotary cylinder, a rotary hydraulic cylinder, and the like, and the motor is preferably used in this embodiment.

Specifically, when the water sample of the sampling assembly is collected, the screw rod 52 can rotate under the driving of the first driving source 51, and the traction seat 54 is limited by the guide rail 55 to have only the vertical movement freedom, so that the sliding sleeve 53 drives the traction seat 54 and the connected bottle 3 to synchronously move down vertically through the engagement of the clutch structure 8, and the piston rod 4 is in a free state in the vertical direction at this time, so that the piston rod 4 moves down vertically along with the bottle 3 synchronously under the action of friction force. After the sampling assembly reaches the set depth and the position locking of the piston rod 4 is completed, as the piston rod 4 and the bottle body 3 can slide relatively, the sliding sleeve 53 drives the traction seat 54 to drive the bottle body 3 to vertically move relative to the piston rod 4 through the engagement of the clutch structure 8, so that the water sample in the current small-range water area depth is collected.

The above sampling assembly after sampling is defined as a first sampling assembly, and after the first sampling assembly finishes sampling, the screw rod 52 will continue to rotate under the driving of the first driving source 51, at this time, the piston rod 4 is located at the limit position and will limit the vertical movement of the bottle 3, and the limiting force will drive the clutch structure 8 between the sliding sleeve 53 and the traction seat 54 corresponding to the first sampling assembly to be in a free state, so that the position height of the traction seat 54 corresponding to the first sampling assembly is unchanged, and the sliding sleeve 53 will synchronously rotate along with the screw rod 52. The rest of the sampling components are driven by the screw rod 52 to move downwards continuously until the rest of the sampling components reach the set water depth, and the process can be repeated to finish water sample collection at the corresponding depth.

Specifically, the clutch structure 8 has various specific structures, one of which is shown in fig. 7, and the traction seat 54 is sleeved on the inner side wall of the sliding sleeve 53 and is provided with an installation cavity along the radial direction; the clutch structure 8 includes a clamping groove 83 disposed outside the sliding sleeve 53, and a clutch block 82 elastically slidably mounted in the mounting cavity by a spring 81. When the clutch block 82 is engaged with the clamping groove 83 under the elasticity of the spring 81, the clutch structure 8 is in an engaged state, so that the traction seat 54 can move along the axial direction of the screw rod 52 along with the sliding sleeve 53. When the clutch block 82 is separated from the clamping groove 83, the clutch structure 8 is in a free state, so that the sliding sleeve 53 synchronously rotates along with the screw rod 52 relative to the traction seat 54.

It should be noted that, in order to ensure that the sliding sleeve 53 can stably drive the traction seat 54 to drive the corresponding bottle 3 to move vertically in synchronization, the number of the clutch structures 8 may be plural, and the clutch structures 8 may be disposed at equal intervals along the circumferential direction of the sliding sleeve 53.

In this embodiment, as shown in fig. 1, the floating assembly includes an upper floating base 2 and a lower floating base 1; the upper floating seat 2 and the lower floating seat 1 are connected with each other, and the sampling assembly can vertically move between the upper floating seat 2 and the lower floating seat 1. By arranging the upper floating seat 2 and the lower floating seat 1, the device can be ensured to have enough buoyancy to float on the water surface. Meanwhile, the upper floating seat 2 and the lower floating seat 1 can ensure the stable installation of the structure; the upper floating seat 2 and the lower floating seat 1 can be connected through a guide rail 55. The lifting mechanism 5 and the locking mechanism 7 are both mounted on the floating seat 2.

In the present embodiment, as shown in fig. 1, 2 and 4, the lock mechanism 7 includes a second drive source 71, a stopper assembly 6, a plurality of lock plates 63 corresponding to the number of sampling assemblies, and a plurality of traction assemblies 9. The second drive source 71 is fixedly mounted to the floatation assembly; the limiting component 6 is fixedly arranged on the floating component and extends into the water area; each locking plate 63 is rotatably mounted on top of each piston rod 4, i.e. the locking plates 63 can move vertically with the piston rods 4 synchronously, and the locking plates 63 can rotate around the piston rods 4. The traction assembly 9 is rotatably mounted on the floating assembly at equal intervals along the circumferential direction of the floating assembly, the input end of the traction assembly 9 is in transmission connection with the second driving source 71, and the output end of the traction assembly 9 is matched with the first end of the locking plate 63. When the sampling assembly moves down to the set position, the second driving source 71 can drive the traction assembly 9 to drive the locking plate 63 to rotate around the piston rod 4, so that the second end of the locking plate 63 is in vertical limit engagement with the limit assembly 6.

It is understood that the specific structure and operation principle of the second driving source 71 are well known to those skilled in the art, and the common second driving source 71 includes a motor, a rotary cylinder, a rotary hydraulic cylinder, and the like, and the motor is preferably used in this embodiment.

Specifically, the limiting component 6 has various specific structures, one of which is shown in fig. 2, 3 and 6, and the limiting component 6 includes a plurality of arc-shaped plates 61 with arc-shaped cross sections and extending vertically, for example, three plates. The three arcuate plates 61 are equally spaced along the circumference of the floatation assembly and the three arcuate plates 61 are concentric with the piston rod 4 of the corresponding sampling assembly. A plurality of limiting plates 62 are arranged on one side of the arc-shaped plate 61, which is close to the piston rod 4, at equal intervals along the vertical direction, limiting grooves 101 corresponding to the thickness of the locking plate 63 can be formed between the adjacent limiting plates 62, and the lengths of the limiting plates 62 corresponding to the arc-shaped plates 61 are different.

Initially, the initial angle of the locking plates 63 is the same, and the distance between each locking plate 63 and the locking end of the corresponding arc plate 61 is different. Therefore, when the second working mode is performed, each locking plate 63 can synchronously rotate under the traction assembly 9, and along with the gradual increase of the rotation angle, each locking plate 63 can be sequentially clamped with the corresponding limiting groove 101 to form the locking structure 10, so that each sampling assembly is locked at different depth positions.

For ease of understanding, the following description may be given by way of specific parameters. The three locking plates 63 may be defined as a first locking plate, a second locking plate, and a third locking plate, respectively, and the corresponding limit grooves 101 are a first limit groove, a second limit groove, and a third limit groove, respectively.

Initially, the angle of the circular arc portion 102 of the first locking plate around the axial direction of the piston rod 4 from the initial end of the first limit groove is 5 °, the angle of the circular arc portion 102 of the second locking plate around the axial direction of the piston rod 4 from the initial end of the second limit groove is 35 °, and the angle of the circular arc portion 102 of the third locking plate around the axial direction of the piston rod 4 from the initial end of the third limit groove is 65 °.

When the sampling assembly corresponding to the first locking plate reaches the set water depth, the traction assembly 9 can drive the three locking plates 63 to rotate 30 degrees around the corresponding piston rods 4 at the same time, and then the arc parts 102 of the first locking plates rotate to the corresponding first limiting grooves to form locking structures 10 for vertical clamping; at this time, the angle of the arc part 102 of the second locking plate around the axial direction of the piston rod 4 is 5 ° from the initial end of the second limit groove, and the angle of the arc part 102 of the third locking plate around the axial direction of the piston rod 4 is 35 ° from the initial end of the third limit groove; i.e. the vertical movement of the sampling assembly corresponding to the second locking plate and the third locking plate is not restricted.

The sampling components corresponding to the second locking plate and the third locking plate continue to vertically move along with the lifting mechanism 5 until the sampling components corresponding to the second locking plate reach the set depth, and the traction component 9 can drive the three locking plates 63 to rotate for 30 degrees around the corresponding piston rods 4 at the same time; the arc part 102 of the second locking plate rotates to the corresponding second limit groove to form a locking structure 10 for vertical clamping, at this time, the arc part 102 of the first locking plate continues to be clamped with the first limit groove, and the angle between the axial direction of the arc part 102 of the third locking plate around the piston rod 4 and the initial end of the third limit groove is 5 degrees; i.e. the vertical movement of the sampling assembly corresponding to the third locking plate is not restricted.

The sampling assembly corresponding to the third locking plate continues to vertically move along with the lifting mechanism 5 until reaching the set water depth, and the traction assembly 9 can drive the three locking plates 63 to simultaneously rotate 30 degrees around the corresponding piston rods 4, so that the arc portions 102 of the third locking plates rotate into the corresponding third limiting grooves to form locking structures 10 to vertically clamp, and at the moment, the arc portions 102 of the first locking plates and the second locking plates continue to clamp with the corresponding first limiting grooves and the corresponding second limiting grooves.

Based on the above-described process, there are two ways in which the sampling assembly discharges the collected water sample for detection after the water sample collection is completed.

First kind: when all the locking plates 63 are clamped with the corresponding limiting grooves 101 and water sample collection of all the sampling assemblies is completed, the first driving source 51 can drive each bottle body 3 to vertically move upwards relative to the corresponding piston rod 4 through the screw rod 52. At this time, each piston rod 4 is in a vertically moving and locking state by engagement of the corresponding locking plate 63 with the limiting groove 101, and the piston rod 4 is slid in a sealed manner with respect to the bottle 3, so that the sampling water in the bottle 3 can be discharged.

Second kind: after the water quality of all the sampling components is sampled, all the locking plates 63 can be separated from the limiting component 6 and clamped to the initial position under the driving of the traction component 9, and then all the sampling components are driven by the screw rod 52 to vertically move upwards until the sampling components move upwards until the piston rod 4 abuts against the lower end face of the floating seat 2, and the movement of the piston rod 4 is limited, so that the bottle body 3 can continuously move upwards relative to the piston rod 4, and then the sampling water in the bottle body 3 can be discharged.

Specifically, as shown in fig. 4 and 8, the top of the floating assembly is provided with a plurality of cup holders 11, the cup holders 11 being used for placing the collection bottles 12 for collecting sample water, and each bottle 3 being in communication with the corresponding cup holder 11 through a hose 13. Then, when collecting the sample water, the collecting bottle 12 may be placed in the cup holder 11, and then the sampling assembly may drain the sample water in the bottle body 3 into the corresponding collecting bottle 12 through the hose 13 by the above-mentioned sample water draining process. Furthermore, the inspector can take the collection bottle 12 away for water quality inspection, and when the inspection is needed again, a new collection bottle 12 is put into the cup holder 11.

In this embodiment, the specific structure of the traction assembly 9 is various, one of which is shown in fig. 2 to 6, and the floating assembly is provided with a plurality of vertically penetrating arc-shaped grooves 93 along the circumferential direction, and the arc-shaped grooves 93 are concentric with the corresponding piston rods 4. The traction assembly 9 comprises an upper swing arm 91, a lower swing arm 92 and a traction rod 94; the upper swing arm 91 is rotatably mounted at the upper end of the floating assembly and is concentric with the corresponding piston rod 4, and the lower swing arm 92 is fixed to the corresponding locking plate 63; the traction rod 94 penetrates through the arc-shaped groove 93, the upper end of the traction rod 94 is connected with the upper swing arm 91, and the lower swing arm 92 is vertically and slidably connected with the traction rod 94. Therefore, when the position of the sampling assembly is locked, the upper swing arm 91 can rotate around the mounting position under the driving of the second driving source 71, and the traction rod 94 can slide along the arc-shaped groove 93 and drive the lower swing arm 92 to drive the locking plate 63 to rotate around the piston rod 4.

It will be appreciated that the diameter of the perforations in the lower swing arm 92 may be set slightly larger than the diameter of the drawbar 94 in order to avoid interference of the sliding connection of the drawbar 94 with the lower swing arm 92 on the downward movement of the sampling assembly.

In this embodiment, there are several transmission connection modes of the upper swing arm 91 and the second driving source 71, one structure is as shown in fig. 4, the output end of the second driving source 71 is provided with a main gear 72, each upper swing arm 91 is correspondingly provided with a driving gear 74, and the floating assembly is rotatably provided with a gear ring 73; the main gear 72 and the driving gears 74 are engaged with the gear ring 73, so that the second driving source 71 drives the gear ring 73 to engage with each driving gear 74 through the main gear 72, and further drives each upper swing arm 91 to synchronously rotate.

The foregoing has outlined the basic principles, main features and advantages of the present application. It will be appreciated by persons skilled in the art that the present application is not limited to the embodiments described above, and that the embodiments and descriptions described herein are merely illustrative of the principles of the present application, and that various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of protection of the present application is defined by the appended claims and equivalents thereof.

Claims

1. A water sampling device, comprising:

a floatation assembly; the whole device is suitable for floating on the water surface to be sampled through the floating component;

a plurality of sampling assemblies; the sampling assemblies are arranged in the water area below the floating assembly at equal intervals along the circumferential direction of the floating assembly;

a lifting mechanism; the lifting mechanism is arranged on the floating assembly and is matched with the sampling assembly, so that the sampling assembly vertically moves under the water surface under the driving of the lifting mechanism; and

a locking mechanism; the locking mechanism is mounted to the float assembly; the locking mechanism is suitable for locking the positions of the sampling assemblies in sequence in the process of downward movement of the sampling assemblies so that a plurality of sampling assemblies are positioned at different heights below the water surface; and when the position of the sampling assembly is locked, the lifting mechanism is suitable for driving the locked sampling assembly to perform water sample extraction.

2. A water sampling device according to claim 1, wherein the sampling assembly comprises:

a bottle body; the bottle body is matched with the lifting mechanism; and

a piston rod; the piston rod is hermetically and slidably arranged on the bottle body and matched with the locking mechanism;

when the sampling assembly moves downwards to a set position, the locking mechanism is suitable for being in limit fit with the corresponding piston rod so that the piston rod is locked; further, under the drive of the lifting mechanism, the bottle body continuously moves downwards relative to the piston rod so as to extract the water sample;

after the piston rod moves to an extreme position relative to the bottle, the bottle remains stationary.

3. A water sampling device according to claim 2, wherein the lifting mechanism comprises:

a first driving source; the first driving source is fixedly arranged on the floating assembly;

a screw rod; the screw rod is vertically arranged at the output end of the first driving source and extends into the water;

a plurality of sliding sleeves; the sliding sleeves are all matched and installed on the screw rod, and the sliding sleeves are vertically matched with guide rails fixed on the floating assembly in a guiding manner; and

a plurality of fifth wheel; one end of each traction seat is sleeved with the corresponding sliding sleeve through a clutch structure, and the other end of each traction seat is connected with the corresponding bottle body;

when the sampling assembly moves in position, the first driving source drives the sliding sleeve to drive the sampling assembly to move downwards through the lead screw;

when the sampling assembly reaches a set depth and water sample extraction is completed, the clutch structure between the sliding sleeve and the traction seat corresponding to the sampling assembly is in a free state, so that the sliding sleeve synchronously rotates along with the screw rod relative to the traction seat.

4. A water sampling device according to claim 3, wherein: the traction seat is sleeved on the inner side wall of the sliding sleeve, and an installation cavity is formed in the radial direction of the inner side wall of the sliding sleeve;

the clutch structure comprises a clamping groove arranged on the outer side of the sliding sleeve and a clutch block which is elastically and slidably arranged in the mounting cavity through a spring;

when the clutch block is clamped with the clamping groove under the elasticity of the spring, the clutch structure is in a meshed state, so that the traction seat can move along the axial direction of the screw rod along with the sliding sleeve;

when the clutch block is separated from the clamping groove, the clutch structure is in a free state, so that the sliding sleeve synchronously rotates along with the screw rod relative to the traction seat.

5. A water sampling device according to any one of claims 2 to 4, wherein the locking mechanism comprises:

a second driving source; the second driving source is fixedly arranged on the floating assembly;

a limit component; the limiting assembly is fixedly arranged on the floating assembly and extends into a water area;

a plurality of locking plates; each locking plate is correspondingly rotatably arranged at the top of each piston rod; and

a plurality of traction assemblies; the traction assembly is rotatably arranged on the floating assembly at equal intervals along the circumferential direction of the floating assembly, the input end of the traction assembly is in transmission connection with the second driving source, and the output end of the traction assembly is matched with the first end of the locking plate;

when the sampling assembly moves down to a set position, the second driving source is suitable for driving the traction assembly to drive the locking plate to rotate around the piston rod, and then the second end of the locking plate is in limiting clamping with the limiting assembly in the vertical direction.

6. A water sampling device according to claim 5, wherein: the limiting assembly comprises a plurality of arc-shaped plates with arc-shaped sections and vertically extending; each arc plate is arranged at equal intervals along the circumferential direction of the floating assembly, and is concentric with the corresponding piston rod of the sampling assembly;

a plurality of limiting plates are arranged on one side, close to the piston rod, of the arc-shaped plate at equal intervals along the vertical direction, limiting grooves are formed between adjacent limiting plates, and the length of the limiting plates corresponding to the arc-shaped plates is different; therefore, each locking plate is sequentially clamped with the corresponding limiting groove along with the increase of the rotation angle, and each sampling assembly is locked at different depth positions.

7. A water sampling device according to claim 5, wherein: the floating assembly is provided with a plurality of arc-shaped grooves which vertically penetrate through the floating assembly along the circumferential direction, and the arc-shaped grooves are concentric with the corresponding piston rods;

the traction assembly includes:

an upper swing arm; the upper swing arm is rotatably arranged at the upper end of the floating assembly and is concentric with the corresponding piston rod;

a lower swing arm; the lower swing arm is fixed on the corresponding locking plate; and

a traction rod; the traction rod penetrates through the arc-shaped groove, the upper end of the traction rod is connected with the upper swing arm, and the lower swing arm is vertically and slidably connected with the traction rod;

the upper swing arm is suitable for being driven by the second driving source to rotate around the installation position, and then the lower swing arm is driven by the traction rod to drive the locking plate to rotate.

8. A water sampling device according to claim 7, wherein: the output end of the second driving source is provided with a main gear, each upper swing arm is correspondingly provided with a driving gear, and the floating assembly is rotatably provided with a gear ring; the main gear and the driving gears are meshed with the gear ring, so that the second driving source drives the gear ring to be meshed with the driving gears through the main gear, and further drives the upper swing arms to synchronously rotate.

9. A water sampling device according to claim 6, wherein: the top of the floating assembly is provided with a plurality of cup holders, the cup holders are used for placing collecting bottles for collecting sample water, and each bottle body is communicated with the corresponding cup holder through a hose;

when all the locking plates are clamped with the corresponding limiting grooves, the screw rods drive each bottle body to vertically move upwards relative to the corresponding piston rods, and then sampling water in the bottle bodies is discharged into the corresponding collecting bottles through the hoses;

or after the water quality of all the sampling assemblies is sampled, the locking plate is in disengagement with the limiting assembly under the driving of the traction assembly, and then each sampling assembly vertically moves upwards to the lower end of the piston rod, which is propped against the floating assembly, under the driving of the screw rod, so that the sampling water in the bottle body is discharged into the corresponding collecting bottle through the hose.

10. A water sampling device according to claim 1, wherein the float assembly comprises an upper float seat and a lower float seat; the upper floating seat is connected with the lower floating seat, and the sampling assembly is suitable for vertically moving between the upper floating seat and the lower floating seat.