A water resource management sampling device

Abstract

This invention discloses a water resource management sampling device, including a sampling tube and a control mechanism. The sampling tube has a first sampling chamber and a second sampling chamber inside. The first sampling chamber has a first inlet and outlet on the right side, and the second sampling chamber has a second inlet and outlet on the left side. A first moving cavity is formed above the rear side of the first inlet and outlet, and a second moving cavity is formed above the front side of the second inlet and outlet. When the sampling tube is lowered into the sampling point to sample water, the first seal can be opened first to allow water to enter the first sampling chamber through the first inlet and outlet. After the first seal is closed, the sampling tube is lowered to the next sampling point, and then the second seal is opened to allow water to enter the second sampling chamber through the second inlet and outlet. This allows water samples from different depths to be collected at once, improving sampling efficiency.

Description

Technical Field

[0001] This invention relates to the field of water resource management technology, and in particular to a water resource management sampling device. Background Technology

[0002] In the process of conducting water resource research, it is necessary to sample water sources using sampling devices. Most of the sampling devices in the existing technology are simple sampling tube structures, which cannot perform stratified sampling of water resources in the same area. The device needs to be submerged in water multiple times to sample at different depths, which reduces work efficiency. Furthermore, some devices that can sample at different depths at once are prone to water mixing, leading to inaccurate test results. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] In view of the problems existing in the above and / or prior art, the present invention is proposed.

[0005] Therefore, the technical problem to be solved by the present invention is how to improve the sampling efficiency of the sampling device.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a water resource management sampling device, including a sampling cylinder and a control mechanism, wherein the sampling cylinder has a first sampling chamber and a second sampling chamber inside, a first inlet and outlet are provided on the right side of the first sampling chamber, a second inlet and outlet are provided on the left side of the second sampling chamber, a first moving cavity is provided above the rear side of the first inlet and outlet, and a second moving cavity is provided above the front side of the second inlet and outlet, and a first sealing element and a second sealing element are slidably connected inside the first moving cavity and the second moving cavity, respectively;

[0007] The control mechanism includes a control handle located at the top of the outer side of the sampling cylinder. A control rod is fixedly connected to the bottom end of the control handle. A pressing block is rotatably connected to the bottom end of the control rod. A telescopic spring is fixedly connected to the bottom end of the pressing block. A first transmission assembly is driven to the outer side of the bottom of the control rod, and a second transmission assembly is driven to the bottom of the pressing block.

[0008] As a preferred embodiment of the water resource management sampling device of the present invention, a movable cavity is provided at the center of the top of the sampling cylinder, the bottom end of the control rod and the lower pressure block are both disposed in the movable cavity, and the bottom end of the telescopic spring is fixedly connected to the inner bottom wall of the movable cavity.

[0009] As a preferred embodiment of the water resource management sampling device of the present invention, the top of the sampling tube is further provided with a first rotating groove and a second rotating groove, and the first rotating groove is disposed above the second rotating groove. The inner sides of the first rotating groove and the second rotating groove are both connected to the movable cavity, the outer side of the first rotating groove is connected to the first movable cavity, and the second rotating groove is connected to the second movable cavity.

[0010] In a preferred embodiment of the water resource management sampling device of the present invention, the first transmission component includes a first turntable rotatably connected in the first rotating groove, a first rotating cylinder fixedly connected to the bottom end of the first turntable, and the first rotating cylinder rotatably connected in the movable cavity. A slot is provided inside the movable cavity and outside the first rotating cylinder. A torsion spring is fixedly connected to the inner bottom wall of the slot, and the top end of the torsion spring is fixedly connected to the bottom end of the first turntable. A first gear is fixedly installed on the right side of the first turntable. A first through groove is provided at the center of the first turntable and the first rotating cylinder. The bottom end of the control rod passes through the first through groove and extends below the first transmission component. Straight grooves are symmetrically provided on the left and right sides of the first rotating cylinder. Limiting blocks adapted to the straight grooves are symmetrically installed on the left and right sides of the bottom of the control rod. The two limiting blocks are slidably connected in the two straight grooves respectively.

[0011] In a preferred embodiment of the water resource management sampling device of the present invention, the second transmission component includes a second turntable rotatably connected inside the second rotating groove, a second rotating cylinder fixedly connected to the top of the second turntable, and the second rotating cylinder rotatably connected inside the movable cavity, a second gear fixedly installed on the left side of the second turntable, a second through groove opened at the center of the second turntable and the second rotating cylinder, the bottom end of the pressing block being disposed in the second through groove, arc-shaped grooves being arranged in a circular array on the left and right sides of the second rotating cylinder, and driving blocks adapted to the arc-shaped grooves being symmetrically installed on the left and right sides of the pressing block, with the two driving blocks slidably connected in the two arc-shaped grooves respectively.

[0012] In a preferred embodiment of the water resource management sampling device of the present invention, the first sealing element and the second sealing element each include a sealing part, a connecting part, and a rotating part. The sealing part and the rotating part are fixedly connected by the connecting part. The sealing part of the first sealing element is sealed in the first inlet and outlet, and the rotating part of the first sealing element is disposed in the first rotating groove. The sealing part of the second sealing element is sealed in the second inlet and outlet, and the rotating part of the second sealing element is disposed in the second rotating groove. The inner sides of the rotating parts of the first sealing element and the second sealing element are respectively engaged with the first turntable and the second turntable by ring teeth.

[0013] In a preferred embodiment of the water resource management sampling device of the present invention, a connecting rod is fixedly installed on the outer top wall of the sampling tube, and a handle is fixedly installed on the top end of the connecting rod.

[0014] The beneficial effects of this invention are:

[0015] (1) The sampling tube in this device has a first sampling chamber and a second sampling chamber. When the sampling tube is lowered into the sampling point to sample water, the first sealing element can be opened first, so that the water can enter the first sampling chamber through the first inlet and outlet. After the first sealing element is closed, the sampling tube is lowered to the next sampling point and the second sealing element is opened, so that the water can enter the second sampling chamber through the second inlet and outlet. This allows water samples from different depths to be taken out at one time, which improves the sampling efficiency.

[0016] (2) When the control handle is rotated, the first seal can open the seal of the first inlet and outlet. When the control handle is released, the first seal can automatically spring back to the initial position to seal the first inlet and outlet. When the control handle is pressed down, the second seal can open the seal of the second inlet and outlet. When the control handle is released, the second seal can also automatically spring back to the initial position to seal the second inlet and outlet. This structural design effectively solves the problem of water mixing when the sampling cylinder performs stratified sampling, improves the accuracy of the test results, and the above structural design is reasonable, simple to operate, and convenient to use, further improving the practical performance of the device. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments 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 these drawings without creative effort. Wherein:

[0018] Figure 1 This is a perspective view of the overall structure of the present invention.

[0019] Figure 2 This is a front sectional view of the present invention.

[0020] Figure 3 This is a perspective sectional view of the connection between the first sealing element and the sampling cylinder of the present invention.

[0021] Figure 4 This is a perspective sectional view of the connection between the second seal and the sampling cylinder of the present invention.

[0022] Figure 5 For the present invention Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0023] Figure 6 This is a perspective view of the connection between the control mechanism, the first seal, and the second seal of the present invention.

[0024] Figure 7 This is a perspective sectional view of the connection between the control rod, the first transmission component, and the second transmission component of the present invention. Detailed Implementation

[0025] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0028] Example 1

[0029] Reference Figures 1-4 This is the first embodiment of the present invention. This embodiment provides a water resource management sampling device, including a sampling cylinder 100 and a control mechanism 200 installed inside the sampling cylinder 100. The control mechanism 200 allows the staff to easily control the opening and closing of the two seals inside the sampling cylinder 100, thereby enabling the one-time extraction of water samples from different depths, improving sampling efficiency, and preventing water mixing, thus further improving the practical performance of the device.

[0030] Specifically, the sampling cylinder 100 has a first sampling cavity 101 and a second sampling cavity 102 inside. The first sampling cavity 101 has a first inlet and outlet 103 on the right side, and the second sampling cavity 102 has a second inlet and outlet 104 on the left side. The first moving cavity 105 is opened above the rear side of the first inlet and outlet 103, and the second moving cavity 106 is opened above the front side of the second inlet and outlet 104. The first moving cavity 105 and the second moving cavity 106 are respectively slidably connected to the interior of the first moving cavity 105 and the second moving cavity 106.

[0031] It should be noted that the first sampling chamber 101 and the second sampling chamber 102 inside the sampling cylinder 100 are completely separated. Thus, after the sampling cylinder 100 enters the water source to be sampled, the first sampling chamber 101 and the second sampling chamber 102 can collect water from different depths in the area, realizing the function of stratified sampling. At the same time, the first inlet and outlet 103 and the second inlet and outlet 104 respectively opened on the outside of the first sampling chamber 101 and the second sampling chamber 102 can ensure that the water source can be collected into the sampling chamber. After the water source is collected, it can also be discharged from the inlet and outlet. The first sealing element 107 and the second sealing element 108 can seal the first inlet and outlet 103 and the second inlet and outlet 104. When it is necessary to collect water or discharge water from the sampling chamber, the opening and closing of the first sealing element 107 and the second sealing element 108 can be controlled by the control mechanism 200.

[0032] More specifically, the control mechanism 200 includes a control handle 201 located at the top of the outer side of the sampling cylinder 100. A control rod 202 is fixedly connected to the bottom end of the control handle 201. A pressing block 203 is rotatably connected to the bottom end of the control rod 202. A telescopic spring 204 is fixedly connected to the bottom end of the pressing block 203. A first transmission assembly 205 is driven to the outer side of the bottom of the control rod 202, and a second transmission assembly 206 is driven to the bottom of the pressing block 203. The control handle 201 is located outside the sampling cylinder 100 for easy use by the operator. When the operator rotates the control handle 201, the control handle 201 can drive... When the control lever 202 rotates, it drives the first transmission component 205 to operate. When the operator presses down on the control handle 201, the control handle 201 drives the lower pressure block 203 to move vertically downward through the control lever 202. While the lower pressure block 203 is pressing the lower telescopic spring 204, it drives the second transmission component 206 to operate. When the control handle 201 is released, the lower pressure block 203, the control lever 202, and the control handle 201 can be returned to their initial positions by the rebound force of the telescopic spring 204 (for details on the operating principle of the first transmission component 205 and the second transmission component 206, please refer to Embodiment 2).

[0033] Preferably, a movable cavity 109 is provided at the center of the top of the sampling cylinder 100. The bottom end of the control rod 202, the lower pressure block 203, the first transmission component 205 and the second transmission component 206 are all located in the movable cavity 109. The bottom end of the telescopic spring 204 is fixedly connected to the inner bottom wall of the movable cavity 109. The movable cavity 109 provides installation and operation space for most of the components in the control mechanism 200.

[0034] Example 2

[0035] Reference Figures 2-7This is the second embodiment of the present invention, which is a detailed description of how the control mechanism 200 in embodiment 1 controls the opening and closing of the first seal 107 and the second seal 108.

[0036] It should be noted in advance that the sampling cylinder 100 has a first rotating groove 110 and a second rotating groove 111 inside its top end. The first rotating groove 110 is positioned above the second rotating groove 111. The inner sides of both the first rotating groove 110 and the second rotating groove 111 are connected to the movable cavity 109. The outer side of the first rotating groove 110 is connected to the first moving cavity 105, and the second rotating groove 111 is connected to the second moving cavity 106. The entire first transmission assembly 205 is disposed within the first rotating groove 110 and the movable cavity 109, and the entire second transmission assembly 206 is disposed within the second rotating groove 111 and the movable cavity 109. Most of the first sealing member 107 is... The first sealing member 107 is placed in the first moving cavity 105. The top part of the first sealing member 107 is disposed in the first rotating groove 110 and connected to the first transmission assembly 205. The majority of the second sealing member 108 is disposed in the second moving cavity 106. The top part of the second sealing member 108 is disposed in the second rotating groove 111 and connected to the second transmission assembly 206. The above structure is designed so that when the first transmission assembly 205 is in operation, it can drive the first sealing member 107 to rotate, thereby opening and closing the opening of the first inlet / outlet 103. When the second transmission assembly 206 is in operation, it can drive the second sealing member 108 to rotate, thereby opening and closing the opening of the second inlet / outlet 104.

[0037] Specifically, the first transmission assembly 205 includes a first turntable 205a rotatably connected within a first rotating groove 110. A first rotating cylinder 205b is fixedly connected to the bottom end of the first turntable 205a, and the first rotating cylinder 205b is rotatably connected within a movable cavity 109. A slot 109a is formed inside the movable cavity 109 and outside the first rotating cylinder 205b. A torsion spring 205c is fixedly connected to the inner bottom wall of the slot 109a, and the top end of the torsion spring 205c is fixedly connected to the bottom end of the first turntable 205a. The first turntable 205a... A first gear 205d is fixedly installed on the right side of 5a. A first through groove 205e is opened at the center of the first turntable 205a and the first rotating drum 205b. The bottom end of the control rod 202 passes through the first through groove 205e and extends to the bottom of the first transmission assembly 205. Straight grooves 205f are symmetrically opened on the left and right sides of the first rotating drum 205b. Limiting blocks 202a that are adapted to the straight grooves 205f are symmetrically installed on the left and right sides of the bottom of the control rod 202. The two limiting blocks 202a are slidably connected in the two straight grooves 205f respectively.

[0038] More specifically, the second transmission assembly 206 includes a second turntable 206a rotatably connected inside the second rotating groove 111, a second rotating cylinder 206b fixedly connected to the top of the second turntable 206a, and the second rotating cylinder 206b rotatably connected inside the movable cavity 109. A second gear 206c is fixedly installed on the left side of the second turntable 206a. A second through groove 206d is opened at the center of the second turntable 206a and the second rotating cylinder 206b. The bottom end of the pressing block 203 is set in the second through groove 206d. Arc-shaped grooves 206e are arranged in a circular array on the left and right sides of the second rotating cylinder 206b. Drive blocks 203a adapted to the arc-shaped grooves 206e are symmetrically installed on the left and right sides of the pressing block 203. The two drive blocks 203a are slidably connected in the two arc-shaped grooves 206e respectively.

[0039] The above two paragraphs describe the specific structures of the first transmission assembly 205 and the second transmission assembly 206, respectively. The first seal 107 and the second seal 108 both include a sealing part a1, a connecting part a2, and a rotating part a3. The sealing part a1 and the rotating part a3 are fixedly connected by the connecting part a2. The sealing part a1 of the first seal 107 is sealed in the first inlet / outlet 103, and the rotating part a3 of the first seal 107 is disposed in the first rotating groove 110. The sealing part a1 of the second seal 108 is sealed in the second inlet / outlet 104, and the rotating part a3 of the second seal 108 is disposed in the second rotating groove 111. The inner sides of the rotating parts a3 of the first seal 107 and the second seal 108 are respectively engaged with the first turntable 205a and the second turntable 206a by ring teeth.

[0040] In summary, the working principle of the first transmission component 205 driving the first seal 107 is as follows: When the operator rotates the control handle 201, the control handle 201 can drive the control rod 202 at the bottom to rotate, and the limiting blocks 202a on the left and right sides of the bottom of the control rod 202 can rotate. Since the two limiting blocks 202a are slidably connected in the two straight grooves 205f, the control rod 202 drives the limiting blocks 202a to rotate, and the limiting blocks 202a can drive the outer first rotating cylinder 205b to rotate. The first rotating cylinder 205b can drive the top first rotating disk 205a to rotate in the first rotating groove 110. Since the outer side of the first rotating disk 205a is provided with the first gear 205d, and the inner side of the rotating part a3 of the first seal 107 is provided with ring teeth that match the first gear 205d, the rotating part a3 of the first seal 107 can be driven to rotate as the first rotating disk 205a drives the first gear 205d to rotate. When the first rotating part a3 of the first sealing member 107 rotates, the sealing part a1 can be moved to the rear side of the first moving cavity 105 through the connecting part a2, thereby releasing the sealing effect on the first inlet and outlet 103. At this time, the external water source or the water source in the first sampling cavity 101 can flow in or out, achieving the purpose of sampling water source sampling by the sampling tube 100. At the same time that the first rotating drum 205b drives the first rotating disk 205a to rotate, the torsion spring 205c provided on the outside of the first rotating drum 205b will twist and generate torque. Thus, when the operator releases the control handle 201, the first transmission component 205 can be bounced back to the initial position under the action of the rebound force of the torsion spring 205c. The first rotating disk 205a can also drive the first sealing member 107 to rotate to the initial position through the first gear 205d, so that the first sealing member 107 can seal the first inlet and outlet 103 again, providing the necessary conditions for subsequent use.

[0041] The working principle of the second transmission assembly 206 driving the second seal 108 is as follows: When the operator presses down on the control handle 201, the control handle 201 can drive the control rod 202 at the bottom to move vertically downward, and the limiting blocks 202a on both sides of the control rod 202 can slide downward into the straight groove 205f. The bottom end of the control rod 202 can push the lower pressure block 203 to move vertically downward. While the bottom end of the lower pressure block 203 is compressing the telescopic spring 204, the driving blocks 203a on both sides of the lower pressure block 203 also move downward. It can also move vertically downwards. Since the two drive blocks 203a are slidably connected to the arc-shaped grooves 206e opened on both sides of the second rotating cylinder 206b, the vertical downward movement of the drive blocks 203a drives the second rotating cylinder 206b to rotate. The second rotating cylinder 206b then drives the second turntable 206a at its bottom to rotate. Furthermore, a second gear 206c is provided on the outer side of the second turntable 206a, and a part corresponding to the second gear is provided on the inner side of the rotating part a3 of the second seal 108. The matching ring gear 206c, during the rotation of the second gear 206c driven by the second turntable 206a, can rotate the rotating part a3 of the second seal 108. The rotating part a3 of the second seal 108 can then drive the sealing part a1 to move towards the front of the second moving cavity 106 through the connecting part a2, thereby releasing the sealing effect on the second inlet and outlet 104. At this time, external water or water in the second sampling cavity 102 can flow in or out, achieving the purpose of water sampling by the sampling tube 100. When the operator releases the control handle 201, under the rebound force of the telescopic spring 204, the second transmission assembly 206, the lower pressure block 203, the control rod 202 and the control handle 201 can spring back to the initial position. The second gear 206c in the second transmission assembly 206 can drive the second seal 108 to rotate to the initial position, so that the sealing part a1 of the second seal 108 can seal the second inlet and outlet 104 again, providing the necessary conditions for subsequent use.

[0042] Preferably, a connecting rod 112 is fixedly installed on the outer top wall of the sampling tube 100, and a handle 113 is fixedly installed on the top of the connecting rod 112. The handle 113 allows the staff to easily grasp the sampling tube 100 and make it penetrate deep into the water sample to be collected. The length of the connecting rod 112 represents the depth to which the sampling tube 100 can dive. After the sampling tube 100 reaches the specified depth, the opening and closing of the first sealing member 107 and the second sealing member 108 are controlled by the operation control handle 201, ensuring that the water source to be tested can be successfully collected into the first sampling chamber 101 and the second sampling chamber 102.

[0043] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0044] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0045] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0046] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A water resource management sampling device, characterized in that: include, A sampling cylinder (100) has a first sampling chamber (101) and a second sampling chamber (102) inside. A first inlet / outlet (103) is provided on the right side of the first sampling chamber (101), and a second inlet / outlet (104) is provided on the left side of the second sampling chamber (102). A first moving cavity (105) is provided above the rear side of the first inlet / outlet (103), and a second moving cavity (106) is provided above the front side of the second inlet / outlet (104). A first sealing element (107) and a second sealing element (108) are slidably connected inside the first moving cavity (105) and the second moving cavity (106), respectively. The control mechanism (200) includes a control handle (201) located at the top of the outer side of the sampling cylinder (100). A control rod (202) is fixedly connected to the bottom end of the control handle (201). A lower pressure block (203) is rotatably connected to the bottom end of the control rod (202). A telescopic spring (204) is fixedly connected to the bottom end of the lower pressure block (203). A first transmission assembly (205) is driven to the outer side of the bottom of the control rod (202). A second transmission assembly (206) is driven to the bottom of the lower pressure block (203). A movable cavity (109) is provided at the center of the top of the sampling cylinder (100). The bottom end of the control rod (202) and the lower pressure block (203) are both located in the movable cavity (109), and the bottom end of the telescopic spring (204) is fixedly connected to the inner bottom wall of the movable cavity (109). The sampling cylinder (100) is further provided with a first rotating groove (110) and a second rotating groove (111) inside the top end. The first rotating groove (110) is located above the second rotating groove (111). The inner sides of the first rotating groove (110) and the second rotating groove (111) are connected to the movable cavity (109). The outer side of the first rotating groove (110) is connected to the first moving cavity (105). The second rotating groove (111) is connected to the second moving cavity (106). The first transmission assembly (205) includes a first turntable (205a) rotatably connected within the first rotating groove (110). A first rotating cylinder (205b) is fixedly connected to the bottom end of the first turntable (205a), and the first rotating cylinder (205b) is rotatably connected within the movable cavity (109). A slot (109a) is provided inside the movable cavity (109) and outside the first rotating cylinder (205b). A torsion spring (205c) is fixedly connected to the inner bottom wall of the slot (109a), and the top end of the torsion spring (205c) is fixedly connected to the bottom end of the first turntable (205a). The first turntable (205a)... A first gear (205d) is fixedly installed on the right side of 5a). A first through groove (205e) is opened at the center of the first turntable (205a) and the first rotating cylinder (205b). The bottom end of the control rod (202) passes through the first through groove (205e) and extends to the bottom of the first transmission assembly (205). Straight grooves (205f) are symmetrically opened on the left and right sides of the first rotating cylinder (205b). Limiting blocks (202a) that are adapted to the straight grooves (205f) are symmetrically installed on the left and right sides of the bottom of the control rod (202). The two limiting blocks (202a) are slidably connected in the two straight grooves (205f). The second transmission assembly (206) includes a second turntable (206a) rotatably connected inside the second rotating groove (111). A second rotating cylinder (206b) is fixedly connected to the top of the second turntable (206a), and the second rotating cylinder (206b) is rotatably connected inside the movable cavity (109). A second gear (206c) is fixedly installed on the left side of the second turntable (206a). A second through groove (206d) is opened at the center of the second turntable (206a) and the second rotating cylinder (206b). The bottom end of the pressing block (203) is set in the second through groove (206d). Arc-shaped grooves (206e) are arranged in a circular array on the left and right sides of the second rotating cylinder (206b). Drive blocks (203a) that are adapted to the arc-shaped grooves (206e) are symmetrically installed on the left and right sides of the pressing block (203). The two drive blocks (203a) are slidably connected in the two arc-shaped grooves (206e).

2. The water resource management sampling device as described in claim 1, characterized in that: The first seal (107) and the second seal (108) each include a sealing part (a1), a connecting part (a2), and a rotating part (a3). The sealing part (a1) and the rotating part (a3) ​​are fixedly connected by the connecting part (a2). The sealing part (a1) of the first seal (107) is sealed in the first inlet / outlet (103). The rotating part (a3) ​​of the first seal (107) is disposed in the first rotating groove (110). The sealing part (a1) of the second seal (108) is sealed in the second inlet / outlet (104). The rotating part (a3) ​​of the second seal (108) is disposed in the second rotating groove (111). The inner sides of the rotating parts (a3) ​​of the first seal (107) and the second seal (108) are respectively engaged with the first turntable (205a) and the second turntable (206a) by ring teeth.

3. The water resource management sampling device as described in claim 2, characterized in that: A connecting rod (112) is fixedly installed on the outer top wall of the sampling tube (100), and a handle (113) is fixedly installed on the top end of the connecting rod (112).

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