Field water sample collection and filtration device

Abstract

The application discloses a kind of field water sample collection filter device, including controller, box, sampling mechanism, sample mechanism, lower sample mechanism, sample injection mechanism and several sample bags, work space is set in box, box is respectively opened sample mouth and lower sample mouth, sample mechanism, lower sample mechanism and sample injection mechanism are all set in work space, and each sample bag is into work space through sample mouth;Sampling mechanism is set in box, and sampling mechanism is connected with sample injection mechanism;Controller is electrically connected with sampling mechanism, sample mechanism, lower sample mechanism and sample injection mechanism respectively.The technical scheme in the application integrates water sample collection, sample and sample wind function in the same box structure, cancels the multi-link water sample transfer step of traditional equipment, directly injects external water sample into sample bag, realizes the integration of collection, sample and sample, greatly simplifies operation process, and improves operation efficiency.

Description

Technical Field

[0001] This invention relates to the field of environmental monitoring technology, and in particular to a field water sample collection and filtration device. Background Technology

[0002] With the increasing awareness of ecological and environmental protection, water quality monitoring has become an important basic task in many fields such as environmental science, hydrogeology, and public health. The collection and pretreatment of field water samples is the core link in the water quality monitoring process, which directly determines the accuracy and reliability of subsequent test data.

[0003] Currently, field water sample collection and filtration operations mainly rely on two types of equipment: simplified versions of traditional laboratory filtration equipment and dedicated portable water sample filtration devices. Traditional laboratory filtration equipment centers on large vacuum pumps, fixed filter membrane devices, and glass collection bottles. While these devices offer high filtration accuracy, they have significant limitations: they are bulky and heavy, making them impractical for single-person portability and requiring vehicle transport, thus hindering their suitability for remote, inaccessible environments such as plateaus, deserts, and mountains. Furthermore, they rely on AC power, rendering them unusable in remote areas without power grid coverage; even with a generator, the sheer volume of equipment and operational complexity increase. Portable water sample filtration devices offer significant improvements in portability and mobility, but require frequent sample bottle changes, making the entire operation cumbersome and unable to meet the high-efficiency requirements of batch water sample collection and filtration.

[0004] In summary, current field water sample collection and filtration equipment generally suffers from technical problems such as low integration, low operating efficiency, and insufficient portability and adaptability, which cannot meet the needs of high efficiency, accuracy, and convenience for batch field water sample collection and filtration. Summary of the Invention

[0005] The main objective of this invention is to provide a field water sample collection and filtration device, which aims to solve the problem of low efficiency in field water sample collection.

[0006] To achieve the above objectives, the technical solution proposed by this invention is as follows: A field water sample collection and filtration device includes a controller, a housing, a sampling mechanism, a sample loading mechanism, a sample unloading mechanism, a sample injection mechanism, and several sample bags. The housing has a working space with a sample loading port and a sample unloading port. The sample loading mechanism, the sample unloading mechanism, and the sample injection mechanism are all located within the working space. Each sample bag enters the working space through the sample loading port. The sampling mechanism is located within the housing and is connected to the sample injection mechanism. The controller is electrically connected to the sampling mechanism, the sample loading mechanism, the sample unloading mechanism, and the sample injection mechanism. The controller controls the sample loading mechanism to move the sample bag closest to the sample injection mechanism to a preset position. The controller controls the sampling mechanism to acquire external water samples and deliver them to the sample injection mechanism according to preset parameters. The controller controls the sample injection mechanism to inject the external water samples into the sample bags located at the preset positions. The controller controls the sample unloading mechanism to deliver the sample bags located at the preset positions and filled with samples through the sample unloading port to the outside of the housing.

[0007] Preferably, the sample bag includes a bag body and a positioning plate. One end of the bag body has a bag opening, and the positioning plate is located at the connection between the bag opening and the bag body, and the positioning plate is arranged around the bag opening. A rubber layer and a limiting layer are fixed inside the bag opening, and the limiting layer is located on the side of the rubber layer facing the bag body. The limiting layer and the inner wall surface of the bag opening are spaced apart, and the limiting layer and the rubber layer are connected by a connecting piece. The sample injection mechanism is used to inject external water sample into the bag body through the rubber layer and close to the limiting piece.

[0008] Preferably, two guide plates are provided in the working space, the two guide plates are spaced apart, and a moving channel is formed between the two guide plates. One end of the moving channel is connected to the upper sample port, and the other end of the moving channel is connected to the lower sample port. The extension path of the moving channel passes through the preset position. The limiting plate of the sample bag is located above the two limiting plates, so that the bag body passes through the moving channel and is suspended by the two limiting plates.

[0009] Preferably, the sample loading mechanism includes a first linear motor, a first mounting base, a connector, and a first pusher plate. The first linear motor is located above the moving channel and extends along the sample loading port toward the preset position. The first mounting base and the first pusher plate are located between the moving channel and the first linear motor. The first linear motor is driven and connected to the first mounting base. The first pusher plate is located between the first mounting base and the first linear motor. The first mounting base is driven and connected to one end of the first pusher plate through the connector. The first pusher plate is vertically arranged. The controller is electrically connected to the connector and the first linear motor. The controller is used to control the first linear motor to drive the first pusher plate to move through the connector. When the first pusher plate passes the sample bag closest to the preset position toward the sample loading port, the connector drives the first pusher plate, which is abutting the bag opening, to deflect and reset the first pusher plate after passing the bag opening. When the first pusher plate moves toward the preset position, the connector drives the first pusher plate to push the sample bag closest to the preset position into the preset position.

[0010] Preferably, the connector includes a pressure sensor, a limiting plate, and a connecting shaft. The end of the first push plate away from the moving channel is hinged to the first mounting base via the connecting shaft. The first push plate swings along the sample inlet toward the preset position. The limiting plate is disposed on the first mounting base and is vertically disposed on the side of the first push plate facing the sample inlet. The limiting plate and each sample bag are vertically spaced apart. The limiting plate is fitted to the first push plate and is used to prevent the first push plate from swinging toward the sample inlet. The pressure sensor is disposed on the side of the limiting plate facing the first push plate. The connecting shaft is provided with a torsion spring, which is used to drive the first push plate to press tightly against the pressure sensor. The controller is electrically connected to the pressure sensor, which is used to send the detected pressure data to the controller. The controller is used to control the first linear motor according to the fluctuation of the pressure data, driving the first push plate to sequentially send the sample bag furthest from the sample inlet into the preset position.

[0011] Preferably, the injection mechanism includes a second linear motor, a second mounting base, a needle, a connecting tube, and a telescopic hose. The second linear motor is disposed on one side of the moving channel and is vertically oriented. The second mounting base is located above the moving channel, and the output end of the second linear motor is connected to the second mounting base. The connecting tube is located on the side of the second mounting base facing the sample inlet and is vertically oriented. The needle is located between the connecting tube and the moving channel, and the needle communicates with the connecting tube. The end of the connecting tube away from the needle is connected to the sampling mechanism via the telescopic hose. The controller is electrically connected to the second linear motor, and the controller is used to control the second linear motor to drive the needle through the rubber layer and insert it into the sample bag when the sample loading mechanism moves the sample bag into the preset position.

[0012] Preferably, the sampling mechanism includes an inlet pipe, an outlet pipe, and a sample storage tank. The sample storage tank is disposed inside the housing and located on one side of the working space. A water level sensor is installed inside the sample storage tank. One end of the inlet pipe is connected to the outside of the housing, and the other end is connected to the inside of the sample storage tank. A first water pump is installed in the inlet pipe. One end of the outlet pipe is connected to the inside of the sample storage tank, and the other end extends into the working space and is connected to the end of the telescopic hose away from the connecting pipe. A second water pump is installed in the outlet pipe. The controller is electrically connected to the water level sensor, the first water pump, and the second water pump. The water level sensor is used to send liquid level data to the controller. The controller is used to control the first water pump based on the liquid level data and preset parameters to deliver external water into the sample storage tank. The controller is also used to control the second water pump according to preset parameters to deliver the water sample from the sample storage tank into the connecting pipe through the telescopic hose.

[0013] Preferably, the sample feeding mechanism includes a third linear motor, a third mounting base, and a second pusher plate. The third linear motor is positioned below one of the guide plates and extends along the preset position toward the sample feeding port. The third mounting base is located below the third linear motor, and the second pusher plate is located below the moving channel. The third linear motor is driven and connected to one end of the second pusher plate via the third mounting base. The controller is electrically connected to the third linear motor and is used to control the third linear motor to drive the second pusher plate via the third mounting base to push the sample bag after it has been filled at the preset position, thereby sending the sample bag into the sample feeding port.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: By integrating water sample collection, loading, and unloading functions into a single enclosure structure, the multi-step water sample transfer process of traditional equipment is eliminated. External water samples are directly injected into the sample bag, realizing integrated operation of collection, loading, and unloading, greatly simplifying the operation process and improving operational efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Fig. 1 This is a schematic diagram of an embodiment of a field water sample collection and filtration device according to the present invention; Fig. 2 This is a schematic diagram of the internal structure of the box from a top-down view. Fig. 3 A schematic diagram of the internal structure of the box from the front view; Fig. 4 This is a schematic diagram of the sample bag structure.

[0017] Explanation of icon numbers: 1-Box body; 11-Sampling inlet; 12-Sampling outlet; 13-Working space; 14-Control panel; 15-Handle; 16-Guide plate; 17-Moving channel; 18-Camera; 19-Transparent observation window; 2-Sampling mechanism; 21-Inlet pipe; 22-Outlet pipe; 23-Sample storage box; 24-Main drain pipe; 25-Secondary drain pipe; 3-Sampling mechanism; 31-First linear motor; 32-First mounting base; 33-First push plate; 34-Pressure sensor; 35-Limiting plate; 36-Connecting shaft; 4- Sample feeding mechanism; 41- Third linear motor; 42- Third mounting base; 43- Second push plate; 5-Injection mechanism; 51-Second linear motor; 52-Second mounting base; 53-Needle; 54-Connecting tube; 55-Telescopic flexible tube; 6-Sample bag; 61-Bag body; 62-Bag opening; 63-Positioning plate; 64-Rubber layer; 65-Limiting layer; The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0020] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0023] This invention proposes a field water sample collection and filtration device.

[0024] like Figs. 1 to 4The field water sample collection and filtration device shown includes a controller, a housing 1, a sampling mechanism 2, a sample loading mechanism 3, a sample unloading mechanism 4, a sample injection mechanism 5, and several sample bags 6. The housing 1 has a working space 13, with a sample loading port 11 and a sample unloading port 12. The sample loading mechanism 3, the sample unloading mechanism 4, and the sample injection mechanism 5 are all located within the working space 13. Each sample bag 6 enters the working space 13 through the sample loading port 11. The sampling mechanism 2 is located within the housing 1 and is connected to the sample injection mechanism 5. The controller... The sampling mechanism 2, the loading mechanism 3, the unloading mechanism 4, and the injection mechanism 5 are electrically connected. The controller is used to control the loading mechanism 3 to drive the sample bag 6 closest to the injection mechanism 5 to move to a preset position. The controller is used to control the sampling mechanism 2 to obtain external water samples and send them into the injection mechanism 5 according to preset parameters. The controller is used to control the injection mechanism 5 to inject the external water samples into the sample bag 6 located at the preset position. The controller is used to control the unloading mechanism 4 to send the sample bag 6 located at the preset position and filled with samples out of the box 1 through the unloading port 12.

[0025] The water sample collection, loading, and unloading functions are integrated into the same housing structure 1, eliminating the multi-step water sample transfer steps of traditional equipment. External water samples are directly injected into the sample bag 6, realizing integrated operation of collection, loading, and unloading, greatly simplifying the operation process and improving operation efficiency.

[0026] Specifically, both the upper sample port 11 and the lower sample port 12 are equipped with removable sealing caps.

[0027] Specifically, the top of the container 1 is equipped with a control panel 14 and two handles 15. The control panel 14 is located between the two handles 15, which are used to facilitate the lifting and transport of the container 1 by the staff. The control panel 14 is electrically connected to the controller and is used to send pre-parameters to the controller.

[0028] Specifically, the preset parameters include at least one of the following: total sampling amount, number of injections, and sample bag model.

[0029] Specifically, several support columns are also installed at the bottom of box 1.

[0030] The sample bag 6 includes a bag body 61 and a positioning plate 63. One end of the bag body 61 is provided with a bag opening 62. The positioning plate 63 is located at the connection between the bag opening 62 and the bag body 61 and is arranged around the bag opening 62. A rubber layer 64 and a limiting layer 65 are fixed inside the bag opening 62. The limiting layer 65 is located on the side of the rubber layer 64 facing the bag body 61. The limiting layer 65 and the inner wall of the bag opening 62 are spaced apart. The limiting layer 65 and the rubber layer 64 are connected by a connecting piece. The sample injection mechanism 5 is used to inject external water samples into the bag body 61 through the rubber layer 64 and close to the limiting piece.

[0031] Specifically, the limiting layer 65 and the rubber layer 64 are connected by two connecting pieces, and the puncture path of the needle 53 is located between the two connecting pieces.

[0032] Two guide plates 16 are installed in the working space 13, spaced apart, forming a moving channel 17 between them. One end of the moving channel 17 connects to the upper sample port 11, and the other end connects to the lower sample port 12. The extension path of the moving channel 17 passes through a preset position. The positioning plate 63 of the sample bag 6 is located above the two guide plates 16, so that the bag body 61 passes through the moving channel 17 and is suspended between the two limiting plates 35. The bag body 61 passes through the moving channel 17, and the positioning plate 63 is located above the two limiting plates 35. The bag body 61 is suspended between the two guide plates 16 by the positioning plate 63, so that the sample loading mechanism 3 pushes the entire sample bag 6 to slide along the moving channel 17 through the bag opening 62.

[0033] Specifically, the moving channel 17 is bent horizontally, and the preset position is located at the bend of the moving channel 17. The extension direction of the upper sample port 11 towards the preset position is perpendicular to the extension direction of the lower sample port 12 towards the preset position. Setting the preset position at the bend facilitates the positioning of the preset position.

[0034] Specifically, a camera 18 is installed on the side of the workspace 13 away from the sample inlet 11. The camera 18 is electrically connected to the controller. The camera 18 is used to acquire image information in the direction of the sample inlet 11 and send it to the controller. The controller is used to determine the standard model of the sample bag 6 according to preset parameters. The controller is also used to determine the image of the sample bag in the direction of the sample inlet 11 based on the image information, and to determine the predicted model of the sample bag 6 closest to the preset position according to the preset ratio and the sample bag image. It also determines whether the predicted model and the standard model are consistent. When the predicted model and the standard model are consistent, the controller executes the preset parameters; when the predicted model and the standard model are inconsistent, a warning message is sent. By using the camera 18 to identify whether the size of the sample bags 6 is consistent, the same volume of liquid is injected into sample bags 6 with inconsistent models, thus avoiding bag bursting.

[0035] Specifically, the controller is also used to acquire confirmation information and modify parameters, determine the remaining number of sampling attempts based on the confirmation information and preset parameters, determine the remaining sampling quantity based on the remaining number of sampling attempts and preset parameters, and determine the next sampling attempt based on the remaining sampling quantity and modified parameters, so that the controller can execute the next sampling attempt. In actual work, staff will carry sample bags 6 of different models and sizes. If a certain model of sample bag 6 is used up, the staff can input confirmation information and modify parameters (i.e., sample bag model) to automatically calculate the remaining sampling quantity and adjust the next sampling attempt in real time, thus avoiding bag bursting and ensuring the normal progress of sampling operations.

[0036] The sample loading mechanism 3 includes a first linear motor 31, a first mounting base 32, a connector, and a first push plate 33. The first linear motor 31 is located above the moving channel 17 and extends along the sample loading port 11 towards a preset position. The first mounting base 32 and the first push plate 33 are located between the moving channel 17 and the first linear motor 31. The first linear motor 31 drives and connects to the first mounting base 32, and the first push plate 33 is located between the first mounting base 32 and the first linear motor 31. The first mounting base 32 is driven and connected to the first push plate 33 via the connector. At one end of 3, the first push plate 33 is set vertically; the controller is electrically connected to the connector and the first linear motor 31 respectively. The controller is used to control the first linear motor 31 to drive the first push plate 33 to move through the connector. When the first push plate 33 moves upward through the sample opening 11 and passes the sample bag 6 closest to the preset position, the connector drives the first push plate 33, which is abutting the bag opening 62, to deflect and reset the first push plate 33 after passing the bag opening 62. When the first push plate 33 moves towards the preset position, the connector drives the first push plate to push the sample bag 6 closest to the preset position into the preset position.

[0037] The connector includes a pressure sensor 34, a limiting plate 35, and a connecting shaft 36. The end of the first push plate 33 furthest from the moving channel 17 is hinged to the first mounting base 32 via the connecting shaft 36. The first push plate swings along the sample inlet 11 towards a preset position. The limiting plate 35 is disposed on the first mounting base 32, vertically positioned on the side of the first push plate 33 facing the sample inlet 11. The limiting plate 35 and each sample bag 6 are vertically spaced apart. The limiting plate 35 is fitted against the first push plate 33 and serves to block... The first push plate 33 swings upward toward the sample port 11; the pressure sensor 34 is set on the side of the limiting plate 35 facing the first push plate 33; the connecting shaft 36 is provided with a torsion spring, which is used to drive the first push plate to press tightly against the pressure sensor 34; the controller is electrically connected to the pressure sensor 34, which is used to send the detected pressure data to the controller; the controller is used to control the first linear motor 31 according to the fluctuation of the pressure data, and drive the first push plate 33 to sequentially send the sample bag 6 furthest from the upper sample port 11 into the preset position. The limiting plate 35 limits the first push plate 33, ensuring that when the first push plate 33 moves upward to the sample opening 11, it is lifted by the bag opening 62 and moves to the position behind the sample bag 6. The pressure sensor 34 and the torsion spring can ensure the reset of the first push plate 33, and detect whether the first push plate 33 is operating normally according to the fluctuation of the pressure data. The first linear motor 31 is controlled according to the fluctuation of the pressure data to ensure that the first linear motor 31 drives the first push plate 33 through the first mounting base 32 to send the sample bag 6 furthest from the upper sample opening 11 into the preset position. Through the above repeated operation, the sample feeding mechanism 3 is controlled to complete the conveying of each sample bag 6.

[0038] The injection mechanism 5 includes a second linear motor 51, a second mounting base 52, a needle 53, a connecting tube 54, and a telescopic hose 55. The second linear motor 51 is located on one side of the moving channel 17 and is vertically positioned. The second mounting base 52 is located above the moving channel 11, and the output end of the second linear motor 51 drives and connects to the second mounting base 52. The connecting tube 54 is located on the side of the second mounting base 52 facing the upper sample port 11 and is vertically positioned. The needle 53 is located between the connecting tube 54 and the moving channel 17 and is connected to the connecting tube 54. The end of the connecting tube 54 away from the needle 53 is connected to the sampling mechanism 2 through the telescopic hose 55. The controller is electrically connected to the second linear motor 51 and is used to control the second linear motor 51 to drive the needle 53 through the second mounting base 52 to penetrate the rubber layer 64 and insert it into the sample bag 6 when the sample loading mechanism 3 moves the sample bag 6 into the preset position. The second linear motor 51 drives the needle 53 to move vertically through the second mounting base 52 and the connecting pipe 54, so that the needle 53 passes through the rubber layer 64 of each sample bag 6 and extends into the sample bag 6. Then, the water sample of the sampling mechanism 2 is obtained through the telescopic hose 55 and the connecting pipe 54, so that the external water sample enters the sample bag 6 through the needle 53.

[0039] The sampling mechanism 2 includes an inlet pipe 21, an outlet pipe 22, and a sample storage tank 23. The sample storage tank 23 is located inside the housing 1 and is situated on one side of the working space 13. A water level sensor is installed inside the sample storage tank 23. One end of the inlet pipe 21 is connected to the outside of the housing 1, and the other end is connected to the inside of the sample storage tank 23. A first water pump is installed in the inlet pipe 21. One end of the outlet pipe 22 is connected to the inside of the sample storage tank 23, and the other end extends into the working space 13 and connects to the end of the telescopic hose 55 away from the connecting pipe 54. A second water pump is installed in the outlet pipe 22. A controller is electrically connected to the water level sensor, the first water pump, and the second water pump. The water level sensor sends liquid level data to the controller, which uses the liquid level data and preset parameters to control the first water pump to deliver external water into the sample storage tank 23. The controller also controls the second water pump according to preset parameters to deliver the water sample from the sample storage tank 23 into the connecting pipe 54 through the telescopic hose 55. The first water pump delivers a large batch of external water samples into the storage tank 23, and the second water pump delivers the samples into the sample bag for finer sampling, ensuring the accuracy of the sampling operation.

[0040] Specifically, a first filter membrane is installed at one end of the inlet pipe 21 connected to the sample storage tank 23, and a second filter membrane is installed at the other end of the outlet pipe 22 connected to the sample storage tank 23. This dual filter membrane structure can prevent impurities from affecting the water sample.

[0041] Specifically, a transparent observation window 19 is provided on the top side of the box 1. The sample storage box 23 is a transparent box 1. The transparent observation window 19 is located between the two handles 15. The transparent observation window 19 can facilitate the staff to observe the operation inside the sample storage box 23 in real time.

[0042] Specifically, a main drain pipe 24 is installed at the bottom of the housing 1, with one end of the main drain pipe 24 connected to the sample storage tank 23. A third water pump is installed in the main drain pipe 24. A secondary drain pipe 25 is also installed in the working space 13, with one end of the secondary drain pipe 25 connected to the main drain pipe 24. The other end of the secondary drain pipe 25 is located directly below and facing the working needle 53. The main drain pipe 24 facilitates the drainage of water samples from the outside into the sample storage tank 23, avoiding cross-contamination between different batches of water samples. The secondary drain pipe 25 facilitates the drainage of water samples from the outlet pipe 22, the telescopic hose 55, and the connecting pipe 54 through the needle 53 into the secondary drain pipe 25, achieving water drainage. When the inlet pipe 21 is in use, the third water pump is activated for a preset time period to clean the inlet pipe 21.

[0043] The sample feeding mechanism 4 includes a third linear motor 41, a third mounting base 42, and a second pusher plate 43. The third linear motor 41 is located below one of the guide plates 16 and extends towards the sample feeding port 12 from a preset position. The third mounting base 42 is located below the third linear motor 41, and the second pusher plate 43 is located below the moving channel 17. The third linear motor 41 is driven by the third mounting base 42 to one end of the second pusher plate 43. A controller is electrically connected to the third linear motor 41. The controller is used to control the third linear motor 41 to drive the second pusher plate 43 through the third mounting base 42 to push the sample bag 6 after it has been filled with sample at the preset position, thus sending the sample bag 6 into the sample feeding port 12. The third linear motor 41 drives the second pusher plate 43 to move repeatedly from the preset position towards the sample feeding port 12, thereby sequentially feeding out each sample bag 6 after filling.

[0044] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A field water sample collection and filtration device, characterized in that, The device includes a controller, a housing, a sampling mechanism, a sample loading mechanism, a sample unloading mechanism, a sample injection mechanism, and several sample bags. The housing has a working space, and the housing has a sample loading port and a sample unloading port. The sample loading mechanism, the sample unloading mechanism, and the sample injection mechanism are all located within the working space. Each sample bag enters the working space through the sample loading port. The sampling mechanism is located within the housing and is connected to the sample injection mechanism. The controller is electrically connected to the sampling mechanism, the loading mechanism, the unloading mechanism, and the injection mechanism respectively. The controller is used to control the loading mechanism to drive the sample bag closest to the injection mechanism to move to a preset position. The controller is used to control the sampling mechanism to acquire external water samples and send them into the injection mechanism according to preset parameters. The controller is used to control the injection mechanism to inject external water samples into the sample bag located at the preset position; The controller is used to control the sample feeding mechanism to send the sample bag, which is located at the preset position and has been filled with samples, out of the box through the sample feeding port.

2. The field water sample collection and filtration device according to claim 1, characterized in that, The sample bag includes a bag body and a positioning plate. One end of the bag body has an opening. The positioning plate is located at the connection between the bag opening and the bag body and is arranged around the bag opening. A rubber layer and a limiting layer are fixed inside the bag opening. The limiting layer is located on the side of the rubber layer facing the bag body. The limiting layer and the inner wall surface of the bag opening are spaced apart. The limiting layer and the rubber layer are connected by a connecting piece. The sample injection mechanism is used to inject external water sample into the bag body through the rubber layer and close to the limiting piece.

3. The field water sample collection and filtration device according to claim 2, characterized in that, Two guide plates are provided in the working space, with the two guide plates spaced apart, forming a moving channel between the two guide plates. One end of the moving channel is connected to the upper sample port, and the other end of the moving channel is connected to the lower sample port. The extension path of the moving channel passes through the preset position. The limiting plate of the sample bag is located above the two limiting plates, so that the bag body passes through the moving channel and is suspended by the two limiting plates.

4. The field water sample collection and filtration device according to claim 3, characterized in that, The sample loading mechanism includes a first linear motor, a first mounting base, a connector, and a first push plate. The first linear motor is located above the moving channel and extends along the sample loading port toward the preset position. The first mounting base and the first push plate are located between the moving channel and the first linear motor. The first linear motor drives and connects to the first mounting base. The first push plate is located between the first mounting base and the first linear motor. The first mounting base is driven and connected to one end of the first push plate through the connector. The first push plate is vertically arranged. The controller is electrically connected to the connector and the first linear motor. The controller is used to control the first linear motor to drive the first push plate to move through the connector. When the first push plate passes the sample bag closest to the preset position toward the sample loading port, the connector drives the first push plate, which is abutting the bag opening, to deflect and reset the first push plate after passing the bag opening. When the first pusher plate moves toward the preset position, the connector drives the first pusher plate to push the sample bag closest to the preset position into the preset position.

5. The field water sample collection and filtration device according to claim 4, characterized in that, The connector includes a pressure sensor, a limiting plate, and a connecting shaft. The end of the first push plate away from the moving channel is hinged to the first mounting base via the connecting shaft. The first push plate swings along the sample inlet towards the preset position. The limiting plate is disposed on the first mounting base, vertically positioned on the side of the first push plate facing the sample inlet. The limiting plate and each sample bag are vertically spaced apart. The limiting plate is fitted against the first push plate and serves to prevent the first push plate from swinging towards the sample inlet. The pressure sensor is disposed on the side of the limiting plate facing the first push plate. The connecting shaft is equipped with a torsion spring, which drives the first push plate to press tightly against the pressure sensor. The controller is electrically connected to the pressure sensor, which sends the detected pressure data to the controller. The controller is used to control the first linear motor according to the fluctuation of pressure data, and drive the first pusher to sequentially send the sample bag furthest from the sample inlet into the preset position.

6. A field water sample collection and filtration device according to any one of claims 3-5, characterized in that, The injection mechanism includes a second linear motor, a second mounting base, a needle, a connecting tube, and a telescopic hose. The second linear motor is located on one side of the moving channel and is vertically oriented. The second mounting base is positioned above the moving channel, and the output end of the second linear motor is connected to the second mounting base. The connecting tube is located on the side of the second mounting base facing the sample inlet and is vertically oriented. The needle is located between the connecting tube and the moving channel, and is connected to the connecting tube. The end of the connecting tube away from the needle is connected to the sampling mechanism via the telescopic hose. The controller is electrically connected to the second linear motor and is used to control the second linear motor to drive the needle through the rubber layer and insert it into the sample bag when the sample loading mechanism moves the sample bag into the preset position.

7. A field water sample collection and filtration device according to claim 6, characterized in that, The sampling mechanism includes an inlet pipe, an outlet pipe, and a sample storage tank. The sample storage tank is located inside the container and situated on one side of the working space. A water level sensor is installed inside the sample storage tank. One end of the inlet pipe connects to the outside of the container, and the other end connects to the inside of the sample storage tank. A first water pump is installed in the inlet pipe. One end of the outlet pipe connects to the inside of the sample storage tank, and the other end extends into the working space and connects to the end of the telescopic hose furthest from the connecting pipe. A second water pump is installed in the outlet pipe. A controller is electrically connected to the water level sensor, the first water pump, and the second water pump. The water level sensor sends liquid level data to the controller. The controller uses the liquid level data and preset parameters to control the first water pump to deliver external water into the sample storage tank. The controller also controls the second water pump according to preset parameters to deliver the water sample from the sample storage tank into the connecting pipe through the telescopic hose.

8. A field water sample collection and filtration device according to any one of claims 3-5, characterized in that, The sample feeding mechanism includes a third linear motor, a third mounting base, and a second push plate. The third linear motor is located below one of the guide plates and extends along the preset position toward the sample feeding port. The third mounting base is located below the third linear motor, and the second push plate is located below the moving channel. The third linear motor is driven to one end of the second push plate through the third mounting base. The controller is electrically connected to the third linear motor. When the sample bag located at the preset position has finished being injected with the sample, the controller controls the third linear motor to drive the second push plate through the third mounting base to push the injected sample bag into the sample inlet.

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