Water quality sampling equipment for hydrological and water resource engineering

Abstract

The invention discloses water quality sampling equipment for hydrology and water resource engineering, and relates to the technical field of water quality sampling. According to the water quality sampling equipment for hydrology and water resource engineering, through cooperation of the machine body and the sampling pipe, the machine body can drive the sampling pipe to move to a to-be-sampled position by rotating a force storage shaft rod for force storage during sampling, then the sampling process is automatically completed, and compared with a traditional sampling mode, the water quality sampling equipment is more convenient and faster; according to the sampling device, the sampling range can be further expanded while the sampling effect is guaranteed, meanwhile, the sampling device is convenient to carry, the sampling vessels can be pulled out after sampling operation is completed through the sampling pipe and the multiple sampling vessels installed in the sampling pipe, the working efficiency is guaranteed, the sampling vessels are convenient to disassemble and replace, and the operation convenience of the sampling device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of water quality sampling, in particular to a water quality sampling device for hydrology and water resources engineering. Background Art

[0002] Water quality monitoring is the process of monitoring and measuring the types of pollutants in water bodies, the concentrations of various pollutants and their changing trends, and evaluating the water quality. The monitoring scope is very wide, including unpolluted and polluted natural water and various industrial drainage. The main monitoring items can be divided into two categories: one is the comprehensive indicators reflecting the water quality, such as temperature, chromaticity, turbidity, pH value, conductivity, suspended solids, dissolved oxygen, chemical oxygen demand and biochemical oxygen demand; the other is some toxic substances, such as phenol, cyanide, arsenic, lead, chromium, cadmium, mercury and organic pesticides. In the process of water quality monitoring, it is necessary to sample and test the water source. Referring to the Chinese patent, the publication number is "CN115372070A" "a water quality sampling device for hydrology and water resources engineering", the water samples taken by the existing sampling equipment of the patent are of low accuracy; but the equipment still has the problems of small sampling range and cumbersome operation. In this regard, we propose a water quality sampling device for hydrology and water resources engineering to solve the above problems. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a water quality sampling device for hydrology and water resources engineering, which solves the problems raised in the above-mentioned background technology.

[0004] To achieve the above purpose, the present invention is implemented through the following technical solutions: A water quality sampling device for hydrology and water resources engineering, including a body, a sampling tube is fixed at the bottom of the body, and a plurality of sampling dishes are installed inside the sampling tube for sampling water sources at different depths; A negative pressure airbag is fixed inside the machine body, which can provide negative pressure to the sampling tube to complete the sample extraction process. A power storage shaft is rotatably connected inside the machine body, and driving blades are fixedly sleeved at both ends of the power storage shaft, and the driving blades are used to drive the machine body to move on the water surface; A winding rope is wound around the outer side of the force storage shaft, a pressing sheet is slidably connected to the inside of the machine body, and force storage springs are fixed between the two ends of the top surface of the pressing sheet and the machine body. The pressing sheet is located above the negative pressure airbag and is used to press the negative pressure airbag. A one-way exhaust valve is installed on the top surface of the negative pressure airbag. A delivery pipe is connected between the sampling tube and the negative pressure airbag, an outer ring sleeve is fixedly installed at the end of the delivery pipe, and an inner sleeve is slidably connected inside the outer ring sleeve, a push rod and a reset slide rod are respectively fixed at both ends of the inner sleeve, a reset spring is sleeved on the outer side of the reset slide rod, a ventilation slot is opened inside the inner sleeve for gas delivery, and a corrugated telescopic tube is fixed between the inner sleeve and the negative pressure airbag; A positioning ring is fixed on the top surface of the machine body, and a traction rope is fixedly installed inside the positioning ring.

[0005] Preferably, elastic pressing covers are fixedly mounted on both sides of the top surface of the body for manually pressing the pressing sheet.

[0006] Preferably, an auxiliary airbag is fixedly mounted on the outer side of the body.

[0007] Preferably, an end ring sleeve is fixedly mounted on the end of the power storage shaft.

[0008] Preferably, a plurality of auxiliary sheets are fixedly mounted on both sides of the pressing sheet, and the plurality of auxiliary sheets are kept parallel to the pressing sheet.

[0009] Preferably, a sealing gasket is fixedly installed on the outer side of the inner sleeve, and the sealing gasket is used to ensure the sealing between the inner sleeve and the outer ring sleeve.

[0010] Preferably, a negative pressure tube is fixedly installed inside the sampling tube, and a plurality of plug-in tubes compatible with the sampling dishes are fixed on the outside of the negative pressure tube. A plurality of assembly grooves are opened inside the sampling tube, and a plurality of sampling dishes are respectively assembled into the corresponding assembly grooves, and elastic sealing heads are fixedly installed on the outsides of the sampling dishes.

[0011] Preferably, elastic blocking rods are fixedly installed on both sides of the assembly groove to limit the sampling dish.

[0012] Preferably, a counterweight is fixedly mounted on the end of the sampling tube.

[0013] Preferably, a pull plate is fixedly mounted on the outer sides of the plurality of sampling dishes.

[0014] The present invention provides a water quality sampling device for hydrology and water resources engineering. Compared with the prior art, it has the following beneficial effects: (1) The water quality sampling equipment used in hydrological and water resources engineering, through the cooperation between the body and the sampling tube, can store power by rotating the power storage shaft during sampling, so that the body can drive the sampling tube to move to the sampling position, and then automatically complete the sampling process. Compared with the traditional sampling method, it is more convenient, can ensure the sampling effect while further expanding the sampling range, and is easy to carry.

[0015] (2) The water quality sampling equipment used in the hydrology and water resources engineering project can pull out the sampling dishes after the sampling operation is completed through the sampling tube and the multiple sampling dishes installed inside, thereby ensuring the operation efficiency and facilitating the disassembly and replacement of the sampling dishes, thereby improving the operation convenience of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the cross-section structure; Figure 3 For the present invention Figure 2 Front view; Figure 4 It is a schematic diagram of the cross-sectional structure of the negative pressure airbag of the present invention; Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle; Figure 6 It is a schematic diagram of the cross-sectional structure of the outer ring sleeve and the inner shaft sleeve of the present invention; Figure 7 For the present invention Figure 6 The enlarged structural diagram at B in the middle; Figure 8 This is a schematic diagram of the cross-sectional structure of the sampling tube of the present invention; Fig. 9 For the present invention Figure 8 Enlarged structural diagram at point C in the middle.

[0017] In the figure: 1. body; 101. elastic pressing cover; 2. positioning ring; 201. traction rope; 3. sampling tube; 301. counterweight; 302. assembly groove; 303. elastic blocking rod; 4. auxiliary airbag; 5. negative pressure airbag; 501. one-way exhaust valve; 6. power storage shaft; 601. end ring sleeve; 602. driving blade; 603. winding rope; 7. pressing plate; 701. auxiliary plate; 8. power storage spring; 9. conveying pipe; 10. outer ring sleeve; 11. inner shaft sleeve; 1101. push rod; 1102. ventilation groove; 1103. sealing gasket; 1104. reset slide rod; 1105. reset spring; 12. corrugated telescopic tube; 13. negative pressure tube; 1301. plug-in tube; 14. sampling dish; 1401. pull plate; 1402. elastic sealing head. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 9 The present invention provides two technical solutions, which specifically include the following embodiments: Embodiment 1: In the embodiment of the present invention, reference Figure 1-Figure 9, a water quality sampling device for hydrology and water resources engineering, comprising a body 1, a sampling tube 3 is fixed at the bottom of the body 1, and a plurality of sampling dishes 14 are installed inside the sampling tube 3 for sampling water sources at different depths; Figure 8 , Fig. 9 The sampling dish 14 is a hollow column for storing samples. Specifically, a negative pressure tube 13 is fixedly installed inside the sampling tube 3, and a plurality of plug-in tubes 1301 adapted to the sampling dish 14 are fixed on the outside of the negative pressure tube 13. A plurality of assembly grooves 302 are provided inside the sampling tube 3, and a plurality of sampling dishes 14 are respectively assembled into the corresponding assembly grooves 302. An elastic plugging head 1402 is fixedly installed on the outside of the sampling dishes 14. A plug-in hole adapted to the plug-in tube 1301 is provided inside the sampling dishes 14. When assembling the sampling dishes 14, the plug-in tube 1301 can be inserted into the adapted plug-in hole by inserting the plug-in tube 1301 into the corresponding assembly groove 302, thereby completing the assembly operation of the sampling dishes 14. Specifically, the elastic plugging head 1402 can allow the sample to enter the sampling dish 14. The elastic plugging head 1402 is supported by an elastic material and has a through hole therein. When negative pressure is generated inside the sampling dish 14, the sample can enter the sampling dish 14 through the elastic plugging head 1402. When the negative pressure stops, the sample will not flow out through the elastic plugging head 1402, thereby further ensuring the sampling effect. The cooperation between the sampling tube 3 and the plurality of sampling dishes 14 facilitates the sampling operation and facilitates the disassembly and assembly of the sampling dishes 14, thereby ensuring the operation efficiency. Specifically, a negative pressure airbag 5 is fixed inside the body 1, and the negative pressure airbag 5 can provide negative pressure to the sampling tube 3 to complete the sample extraction process. A power storage shaft 6 is rotatably connected inside the body 1, and driving blades 602 are fixedly sleeved at both ends of the power storage shaft 6. The driving blades 602 are used to drive the body 1 to move on the water surface. Through the setting of the negative pressure airbag 5, when sampling, the negative pressure airbag 5 is first pressed. During the sampling process, as the negative pressure airbag 5 is reset, negative pressure can be generated in the sampling tube 3 to achieve the sample extraction operation; Specifically, the driving blades 602 are used to drive the body 1 to move on the water surface to expand the sampling range; Specifically, a winding rope 603 is wound around the outer side of the power storage shaft 6, a pressing sheet 7 is slidably connected inside the body 1, and power storage springs 8 are fixed between the two ends of the top surface of the pressing sheet 7 and the body 1, the pressing sheet 7 is located above the negative pressure airbag 5, and is used to press the negative pressure airbag 5, and a one-way exhaust valve 501 is installed on the top surface of the negative pressure airbag 5; Specifically, when the sampling position is far away, the force storage shaft rod 6 can be rotated to wind the winding rope 603, and the pressing plate 7 can slide downward to stretch the force storage spring 8 to achieve the force storage operation. As the pressing plate 7 moves downward, the negative pressure airbag 5 can be compressed and retracted, so that the gas inside it is discharged through the one-way exhaust valve 501, completing the force storage process. Specifically, the one-way exhaust valve 501 is an existing component and will not be described in detail here; Specifically, when the power storage shaft 6 has completed power storage, the machine body 1 is placed on the water surface, at which time the driving blade 602 can contact the water surface, and as the power storage shaft 6 is loosened, the power storage spring 8 can drive the pressing plate 7 to move upward, thereby driving the power storage shaft 6 to rotate through the cooperation of the winding rope 603, and driving the blade 602 to rotate with the power storage shaft 6 to drive the machine body 1 to move horizontally on the water surface, thereby completing the driving operation of the machine body 1; Specifically, a delivery tube 9 is connected between the sampling tube 3 and the negative pressure airbag 5, an outer ring sleeve 10 is fixedly installed at the end of the delivery tube 9, and an inner sleeve 11 is slidably connected inside the outer ring sleeve 10, a push rod 1101 and a reset slide bar 1104 are respectively fixed at both ends of the inner sleeve 11, a reset spring 1105 is sleeved on the outer side of the reset slide bar 1104, a venting slot 1102 is opened inside the inner sleeve 11 for gas delivery operations, and a corrugated telescopic tube 12 is fixed between the inner sleeve 11 and the negative pressure airbag 5; Specifically, through the cooperation between the outer ring sleeve 10 and the inner shaft sleeve 11, the delivery tube 9 can be connected with the airbag when the pressing sheet 7 moves to the limit position, so that the sampling operation is performed only when the body 1 moves to the sampling position. The specific principle is as follows: Figure 6 , Figure 7At this time, the pressing piece 7 is in the initial position, that is, the top, the outer ring sleeve 10 and the inner shaft sleeve 11 are connected to each other, and the bellows 12 and the conveying pipe 9 are connected through the ventilation slot 1102. When the storage shaft rod 6 is rotated to store force, the pressing piece 7 is forced to move downward and separate from the top rod 1101. At this time, the inner shaft sleeve 11 will disappear as the lifting force of the top rod 1101 disappears, and moves downward through the cooperation of the reset slide bar 1104 and the reset spring 1105, staggering the ventilation slot 1102 and the conveying pipe 9, that is, when the pressing piece 7 moves downward, the bellows 12 and the conveying pipe 9 are in a disconnected state, and the negative pressure airbag 5 is pressurized to be able to The gas is discharged through the one-way exhaust valve 501 until the power storage shaft 6 completes power storage. After the body 1 is placed in water and the power storage shaft 6 is released, the power storage shaft 6 can rotate and drive the body 1 to move through the driving blade 602. At this time, the pressing plate 7 can slowly move upward and the shape of the negative pressure airbag 5 remains unchanged until the pressing plate 7 contacts the push rod 1101. At this time, the inner sleeve 11 can be forced to slide upward, so that the delivery pipe 9 is connected with the ventilation slot 1102. As the delivery pipe 9 is connected with the ventilation slot 1102 and the bellows telescopic pipe 12, negative pressure can be generated in the delivery pipe 9 to realize the sample extraction operation until the negative pressure airbag 5 is reset; Specifically, a positioning ring 2 is fixed on the top surface of the body 1, and a traction rope 201 is fixedly installed inside the positioning ring 2. By holding the traction rope 201, the movement range of the body 1 can be better controlled to further ensure the accuracy of the sampling position; Specifically, elastic blocking rods 303 are fixedly installed on both sides of the assembly groove 302 to limit the sampling dish 14, so that the sampling dish 14 can be easily disassembled and assembled; Embodiment 2: Based on Embodiment 1, refer to Figure 1-Figure 9 , a water quality sampling device for hydrology and water resources engineering, comprising a body 1, a sampling tube 3 is fixed at the bottom of the body 1, and a plurality of sampling dishes 14 are installed inside the sampling tube 3 for sampling water sources at different depths; Figure 8 , Fig. 9 The sampling dish 14 is a hollow column for storing samples. Specifically, a negative pressure tube 13 is fixedly installed inside the sampling tube 3, and a plurality of plug-in tubes 1301 adapted to the sampling dish 14 are fixed on the outside of the negative pressure tube 13. A plurality of assembly grooves 302 are provided inside the sampling tube 3, and a plurality of sampling dishes 14 are respectively assembled into the corresponding assembly grooves 302. An elastic plugging head 1402 is fixedly installed on the outside of the sampling dishes 14. A plug-in hole adapted to the plug-in tube 1301 is provided inside the sampling dishes 14. When assembling the sampling dishes 14, the plug-in tube 1301 can be inserted into the adapted plug-in hole by inserting the plug-in tube 1301 into the corresponding assembly groove 302, thereby completing the assembly operation of the sampling dishes 14. Specifically, the elastic plugging head 1402 can allow the sample to enter the sampling dish 14. The elastic plugging head 1402 is supported by an elastic material and has a through hole therein. When negative pressure is generated inside the sampling dish 14, the sample can enter the sampling dish 14 through the elastic plugging head 1402. When the negative pressure stops, the sample will not flow out through the elastic plugging head 1402, thereby further ensuring the sampling effect. The cooperation between the sampling tube 3 and the plurality of sampling dishes 14 facilitates the sampling operation and facilitates the disassembly and assembly of the sampling dishes 14, thereby ensuring the operation efficiency. Specifically, a negative pressure airbag 5 is fixed inside the body 1, and the negative pressure airbag 5 can provide negative pressure to the sampling tube 3 to complete the sample extraction process. A power storage shaft 6 is rotatably connected inside the body 1, and driving blades 602 are fixedly sleeved at both ends of the power storage shaft 6. The driving blades 602 are used to drive the body 1 to move on the water surface. Through the setting of the negative pressure airbag 5, when sampling, the negative pressure airbag 5 is first pressed. During the sampling process, as the negative pressure airbag 5 is reset, negative pressure can be generated in the sampling tube 3 to achieve the sample extraction operation; Specifically, the driving blades 602 are used to drive the body 1 to move on the water surface to expand the sampling range; Specifically, a winding rope 603 is wound around the outer side of the power storage shaft 6, a pressing sheet 7 is slidably connected inside the body 1, and power storage springs 8 are fixed between the two ends of the top surface of the pressing sheet 7 and the body 1, the pressing sheet 7 is located above the negative pressure airbag 5, and is used to press the negative pressure airbag 5, and a one-way exhaust valve 501 is installed on the top surface of the negative pressure airbag 5; Specifically, when the sampling position is far away, the force storage shaft rod 6 can be rotated to wind the winding rope 603, and the pressing plate 7 can slide downward to stretch the force storage spring 8 to achieve the force storage operation. As the pressing plate 7 moves downward, the negative pressure airbag 5 can be compressed and retracted, so that the gas inside it is discharged through the one-way exhaust valve 501, completing the force storage process. Specifically, the one-way exhaust valve 501 is an existing component and will not be described in detail here; Specifically, when the power storage shaft 6 has completed power storage, the machine body 1 is placed on the water surface, at which time the driving blade 602 can contact the water surface, and as the power storage shaft 6 is loosened, the power storage spring 8 can drive the pressing plate 7 to move upward, thereby driving the power storage shaft 6 to rotate through the cooperation of the winding rope 603, and driving the blade 602 to rotate with the power storage shaft 6 to drive the machine body 1 to move horizontally on the water surface, thereby completing the driving operation of the machine body 1; Specifically, a delivery tube 9 is connected between the sampling tube 3 and the negative pressure airbag 5, an outer ring sleeve 10 is fixedly installed at the end of the delivery tube 9, and an inner sleeve 11 is slidably connected inside the outer ring sleeve 10, a push rod 1101 and a reset slide bar 1104 are respectively fixed at both ends of the inner sleeve 11, a reset spring 1105 is sleeved on the outer side of the reset slide bar 1104, a venting slot 1102 is opened inside the inner sleeve 11 for gas delivery operations, and a corrugated telescopic tube 12 is fixed between the inner sleeve 11 and the negative pressure airbag 5; Specifically, through the cooperation between the outer ring sleeve 10 and the inner shaft sleeve 11, the delivery tube 9 can be connected with the airbag when the pressing sheet 7 moves to the limit position, so that the sampling operation is performed only when the body 1 moves to the sampling position. The specific principle is as follows: Figure 6 , Figure 7 At this time, the pressing piece 7 is in the initial position, that is, the top, the outer ring sleeve 10 and the inner shaft sleeve 11 are connected to each other, and the bellows 12 and the conveying pipe 9 are connected through the ventilation slot 1102. When the storage shaft rod 6 is rotated to store force, the pressing piece 7 is forced to move downward and separate from the top rod 1101. At this time, the inner shaft sleeve 11 will disappear as the lifting force of the top rod 1101 disappears, and moves downward through the cooperation of the reset slide bar 1104 and the reset spring 1105, staggering the ventilation slot 1102 and the conveying pipe 9, that is, when the pressing piece 7 moves downward, the bellows 12 and the conveying pipe 9 are in a disconnected state, and the negative pressure airbag 5 is pressurized to be able to The gas is discharged through the one-way exhaust valve 501 until the power storage shaft 6 completes power storage. After the body 1 is placed in water and the power storage shaft 6 is released, the power storage shaft 6 can rotate and drive the body 1 to move through the driving blade 602. At this time, the pressing plate 7 can slowly move upward and the shape of the negative pressure airbag 5 remains unchanged until the pressing plate 7 contacts the push rod 1101. At this time, the inner sleeve 11 can be forced to slide upward, so that the delivery pipe 9 is connected with the ventilation slot 1102. As the delivery pipe 9 is connected with the ventilation slot 1102 and the bellows telescopic pipe 12, negative pressure can be generated in the delivery pipe 9 to realize the sample extraction operation until the negative pressure airbag 5 is reset; Specifically, the bellows 12 is an existing component, which is used to expand and contract with the operation of the negative pressure airbag 5; Specifically, a positioning ring 2 is fixed on the top surface of the body 1, and a traction rope 201 is fixedly installed inside the positioning ring 2. By holding the traction rope 201, the movement range of the body 1 can be better controlled to further ensure the accuracy of the sampling position; Specifically, elastic blocking rods 303 are fixedly installed on both sides of the assembly groove 302 to limit the sampling dish 14, so that the sampling dish 14 can be easily disassembled and assembled; Specifically, a counterweight block 301 is fixedly installed at the end of the sampling tube 3. The counterweight block 301 can ensure the operation stability of the body 1. Pull plates 1401 are fixedly installed on the outer sides of the multiple sampling dishes 14. Specifically, elastic pressing covers 101 are fixedly installed on both sides of the top surface of the body 1, which are used to manually press the pressing sheet 7. By manually pressing the pressing sheet 7, the body 1 can be inserted into the water by hand during sampling, and the sampling operation is completed after the pressing sheet 7 is released; Specifically, an auxiliary airbag 4 is fixedly installed on the outer side of the body 1, and the auxiliary airbag 4 is used to improve the operating stability of the body 1; Specifically, an end ring sleeve 601 is fixedly installed at the end of the power storage shaft rod 6, and the power storage shaft rod 6 can be easily twisted by the cooperation of the end ring sleeve 601; Specifically, multiple auxiliary sheets 701 are fixedly installed on both sides of the pressing sheet 7, and the multiple auxiliary sheets 701 are kept parallel to the pressing sheet 7. The auxiliary sheets 701 can slide downward with the pressing sheet 7 and contact with the negative pressure airbag 5 to ensure the pressing effect on the negative pressure airbag 5; Specifically, a sealing gasket 1103 is fixedly installed on the outer side of the inner sleeve 11 , and the sealing gasket 1103 is used to ensure the sealing between the inner sleeve 11 and the outer ring sleeve 10 .

[0020] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0021] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A water quality sampling device for hydrology and water resources engineering, comprising a body (1), characterized in that: A sampling tube (3) is fixed at the bottom of the body (1), and a plurality of sampling dishes (14) are installed inside the sampling tube (3) for sampling water sources at different depths; A negative pressure airbag (5) is fixed inside the body (1), and the negative pressure airbag (5) can provide negative pressure to the sampling tube (3) for completing the sample extraction process. A power storage shaft (6) is rotatably connected inside the body (1), and driving blades (602) are fixedly sleeved at both ends of the power storage shaft (6). The driving blades (602) are used to drive the body (1) to move on the water surface; A winding rope (603) is wound around the outer side of the force storage shaft (6), a pressing plate (7) is slidably connected to the inside of the machine body (1), and force storage springs (8) are fixed between the two ends of the top surface of the pressing plate (7) and the machine body (1), the pressing plate (7) is located above the negative pressure airbag (5) and is used to press the negative pressure airbag (5), and a one-way exhaust valve (501) is installed on the top surface of the negative pressure airbag (5); A delivery tube (9) is connected between the sampling tube (3) and the negative pressure airbag (5); an outer ring sleeve (10) is fixedly mounted on the end of the delivery tube (9); an inner shaft sleeve (11) is slidably connected inside the outer ring sleeve (10); a push rod (1101) and a reset slide bar (1104) are respectively fixed at both ends of the inner shaft sleeve (11); a reset spring (1105) is sleeved on the outer side of the reset slide bar (1104); a venting slot (1102) is provided inside the inner shaft sleeve (11) for carrying out gas delivery operations; and a corrugated telescopic tube (12) is fixed between the inner shaft sleeve (11) and the negative pressure airbag (5); A positioning ring (2) is fixed on the top surface of the machine body (1), and a traction rope (201) is fixedly installed inside the positioning ring (2).

2. The water quality sampling equipment for hydrology and water resources engineering according to claim 1 is characterized by: Elastic pressing covers (101) are fixedly mounted on both sides of the top surface of the machine body (1) and are used to manually press the pressing sheet (7).

3. The water quality sampling equipment for hydrology and water resources engineering according to claim 1 is characterized by: An auxiliary air bag (4) is fixedly mounted on the outer side of the machine body (1).

4. The water quality sampling equipment for hydrology and water resources engineering according to claim 1 is characterized by: An end ring sleeve (601) is fixedly mounted on the end of the power storage shaft rod (6).

5. The water quality sampling equipment for hydrology and water resources engineering according to claim 1 is characterized by: A plurality of auxiliary sheets (701) are fixedly mounted on both sides of the pressing sheet (7), and the plurality of auxiliary sheets (701) and the pressing sheet (7) are kept parallel.

6. The water quality sampling equipment for hydrology and water resources engineering according to claim 1, characterized in that: A sealing gasket (1103) is fixedly mounted on the outer side of the inner shaft sleeve (11), and the sealing gasket (1103) is used to ensure the sealing between the inner shaft sleeve (11) and the outer ring sleeve (10).

7. The water quality sampling equipment for hydrology and water resources engineering according to claim 1 is characterized by: A negative pressure tube (13) is fixedly installed inside the sampling tube (3), and a plurality of plug-in tubes (1301) adapted to the sampling dishes (14) are fixedly installed outside the negative pressure tube (13). A plurality of assembly grooves (302) are provided inside the sampling tube (3), and the plurality of sampling dishes (14) are respectively assembled into the corresponding assembly grooves (302). An elastic plugging head (1402) is fixedly installed outside each of the sampling dishes (14).

8. The water quality sampling equipment for hydrology and water resources engineering according to claim 7 is characterized by: Elastic blocking rods (303) are fixedly mounted on both sides of the assembly groove (302) and are used to limit the position of the sampling dish (14).

9. The water quality sampling equipment for hydrology and water resources engineering according to claim 7, characterized in that: A counterweight (301) is fixedly mounted on the end of the sampling tube (3).

10. The water quality sampling equipment for hydrology and water resources engineering according to claim 7, characterized in that: A pull plate (1401) is fixedly mounted on the outer sides of the plurality of sampling dishes (14).

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