A water resource sampling and analysis device for water conservancy projects

Abstract

The invention discloses a water resource sampling and analysis device for a water conservancy project, and relates to the technical field of water resource detection equipment. The device comprises a body, a supporting leg is fixedly installed at the bottom of the body, a fixing ring is fixedly installed at the top of the body, a sampling box is slidably installed inside the body, an analysis device is fixedly installed inside the sampling box, a mixing device is arranged inside the body, an anti-blocking device is arranged at the bottom of the body, an intermittent door opening and closing device is arranged at the top of the sampling box, and the mixing device comprises a motor, a rotating shaft, a rotating plate, a gear one, an electric telescopic rod, a sliding rod, a rotating rod, a gear two, a propeller and a guard plate. The rotating plate is rotated to fully stir the water to be sampled and analyzed, so that the substances in the water resources to be sampled and analyzed are fully mixed, thereby ensuring the uniformity of the water resources during sampling, and preventing the water resources from being sampled and analyzed in a static state, resulting in analysis differences.

Description

Technical Field

[0001] The invention relates to the technical field of water resource detection equipment, in particular to a water resource sampling and analysis device for a water conservancy project. Background Art

[0002] The water resource sampling and analysis device for water conservancy projects is a device specially designed to extract water samples from water bodies and analyze and monitor the water samples. It can mix water samples and take samples intermittently.

[0003] The patent with the patent announcement number CN217304468U relates to the technical field of water resource detection equipment, and the patent discloses a water resource sampling and analysis device for water conservancy projects. The patent includes a sampling bottle with an opening at the top, and the sampling bottle is constructed with at least two guide grooves, and a vertical guide rod is slidably connected in the guide groove. The two guide rods are fixed with the same bottle cap that can block the top opening of the sampling bottle, and also include a hoisting mechanism, and the bottle cap is connected to the hoisting mechanism. The bottle cap is installed with a driving member that acts on the sampling bottle, and the driving member is used to make the sampling bottle slide or stop sliding on the two guide rods along the axial direction of the two guide rods. This patent replaces the existing water resource sampling and analysis device for water conservancy projects with a relatively simple structure, and can well collect water quality at different depths, thereby improving the accuracy of the detection results of water resources, thereby greatly improving the practicality of the device.

[0004] In the above patent, the driving member is used to make the sampling bottle slide or stop sliding on the two guide rods along the axial direction of the two guide rods, so that water quality at different depths can be well collected. However, when sampling water resources, the water resources may be still, which may cause the sampled samples to fail to well reflect the water resource conditions in the area during analysis, which may cause differences during analysis. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a water resource sampling and analysis device for a water conservancy project, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a water resource sampling and analysis device for a water conservancy project, comprising a body, a support leg fixedly installed at the bottom of the body, a fixing ring fixedly installed at the top of the body, a sampling box slidably installed inside the body, an analysis device fixedly installed inside the sampling box, a mixing device arranged inside the body, an anti-blocking device arranged at the bottom of the body, and an intermittent door opening and closing device arranged at the top of the sampling box;

[0007] Wherein, the mixing device comprises a motor, a rotating shaft, a rotating plate, a gear one, an electric telescopic rod, a sliding rod, a rotating rod, a gear two, a propeller and a guard plate, the motor is fixedly mounted on the top of the inner wall of the machine body, the rotating shaft is fixedly mounted on the output end of the motor, the rotating plate is fixedly mounted on the circumferential surface of the rotating shaft, the gear one is fixedly mounted on the end of the rotating plate away from the rotating shaft, the electric telescopic rod is fixedly mounted on the inner wall of the machine body, the sliding rod is fixedly mounted on the output end of the electric telescopic rod, the rotating rod rotates and penetrates the sliding rod, the gear two is fixedly mounted on the circumferential surface of the rotating rod close to the end of the gear one, the propeller is fixedly mounted on the circumferential surface of the rotating rod away from the end of the gear two, the guard plate is fixedly mounted on the circumferential surface of the machine body, the movement of the rotating rod drives the gear two and the propeller to start moving, the gear two moves to mesh with the gear one, the rotation of the gear one drives the gear two to start rotating, the rotation of the gear two drives the rotating rod to start rotating, and the rotation of the rotating rod drives the propeller to start rotating.

[0008] According to the above technical solution, the gear one is meshed with the gear two, and the sliding rod is in contact with the body. The meshing ensures that the gear one can drive the gear two to rotate when it rotates, and the contact ensures that the sliding rod will not move excessively when it moves.

[0009] According to the above technical scheme, the anti-clogging device includes a filter plate, a rotating column, a fixed rod, an elastic telescopic rod and a scraper rod, the filter plate is fixedly installed on the bottom of the machine body, the rotating column is rotatably installed on the bottom of the rotating shaft, the fixed rod is fixedly installed on the circumferential surface of the rotating column, the elastic telescopic rod is fixedly installed on the circumferential surface of the supporting leg, and the scraper rod is fixedly installed on the movable end of the elastic telescopic rod. When the rotating shaft rotates, the rotating column is driven to rotate, and the rotation of the rotating column drives the fixed rod to rotate. The rotation of the fixed rod pushes the scraper rod to start moving. After the fixed rod no longer pushes the scraper rod, the elastic telescopic rod pushes the scraper rod back to its original position.

[0010] According to the above technical solution, the anti-blocking device also includes a convex rod, a rotary hammer and a protrusion. The convex rod is fixedly installed on the top of the scraper rod, the rotary hammer is rotatably installed on the top of the filter plate, and the protrusion is fixedly installed on the front of the rotary hammer. When the scraper rod moves, the convex rod is driven to move, and the movement of the convex rod drives the protrusion to move. The movement of the protrusion drives the rotary hammer to move, and the rotary hammer is reset under the action of spring 1.

[0011] According to the above technical solution, the scraper rod is in contact with the filter plate, the side of the convex rod and the convex block in contact with each other is set as an inclined surface, and a spring 1 is set between the rotary hammer and the filter plate. The contact ensures that the scraper rod can clean the surface of the filter plate when it moves, and the inclined surface is set to ensure that the convex rod can push the convex block smoothly when it moves. The spring 1 is set to ensure that the rotary hammer can achieve self-reset.

[0012] According to the above technical scheme, the intermittent door opening and closing device includes an elastic telescopic rod 2, a push rod, an elastic telescopic rod 3, a sliding door and a fixed block. The elastic telescopic rod 2 is fixedly installed on the inner wall of the machine body, the push rod is fixedly installed on the movable end of the elastic telescopic rod 2, the elastic telescopic rod 3 is fixedly installed on the top of the sampling box, the sliding door is fixedly installed on the movable end of the elastic telescopic rod 3, the fixed block is fixedly installed on the top of the sliding door, the clamping rod is slidably installed on the circumferential surface of the machine body, and the inclined block is fixedly installed on the front of the sampling box. When the scraper rod moves, it pushes the push rod to start moving. The push rod moves and pushes the fixed block to start moving. The fixed block moves and drives the sliding door to start moving. The sliding door moves to open the sampling port on the top of the sampling box.

[0013] According to the above technical solution, the intermittent door opening and closing device also includes a clamping rod, a ramp block and a handle, the clamping rod is slidably installed on the circumferential surface of the machine body, the ramp block is fixedly installed on the front of the sampling box, and the handle is fixedly installed on the front of the sampling box. Before removing the sampling box, the clamping rod is pulled so that the clamping rod and the ramp block are no longer in contact, thereby releasing the restriction on the ramp block, and the sampling box is taken out by pulling the handle. When the sampling box is placed into the machine body, the above operation is repeated so that the clamping rod restricts the ramp block while also restricting the sampling box.

[0014] According to the above technical solution, the push rod is in contact with the fixed block, the side of the clamping rod that contacts the inclined plane block is set as an inclined plane, and a second spring is arranged between the clamping rod and the body. The contact ensures that the push rod can push the fixed block to move when it moves, and the inclined plane is set to ensure that the clamping rod and the inclined plane block fit more closely. The second spring ensures that the clamping rod can achieve autonomous reset.

[0015] The present invention provides a water resource sampling and analysis device for a water conservancy project, which has the following beneficial effects:

[0016] (1) The invention starts to rotate the rotating plate by rotating the rotating shaft. The rotating plate fully stirs the water to be sampled and analyzed, so that the substances in the water resources to be sampled and analyzed can be fully mixed, ensuring the uniformity of the water resources during sampling, preventing the water resources from being sampled and analyzed in a static state, resulting in differences in the analysis and causing deviations. The propeller starts to rotate by rotating the rotating rod, and the rotation of the propeller drives the machine body to move in the water area for sampling and analysis, which helps to enhance the uniformity and representativeness of the water sample, break the water body stratification, prevent sediment interference, simulate the natural water flow environment, avoid interference from surface pollutants, improve sampling efficiency, and reduce human errors.

[0017] (2) The invention uses the reciprocating movement of the scraper rod to remove any larger impurities or garbage that may exist on the filter plate, thereby ensuring that the machine equipment will not be blocked by impurities or cause damage to internal instruments, extending the service life of the equipment, reducing maintenance costs, and preventing larger impurities or garbage from entering the machine body and causing equipment failure. The hammer contacts and strikes the filter plate to generate vibration, and the particles and dirt on the surface of the filter plate may be shaken off or fall off through vibration, thereby restoring the filtration efficiency of the filter plate and reducing incomplete filtration or analysis errors caused by filter plate blockage.

[0018] (3) The invention, by allowing the sliding door to open intermittently under the reciprocating push of the scraper rod, helps to randomly extract water samples of different time periods from the water flow, thereby avoiding the sampling results being biased towards the water quality of a specific period, ensuring the purity of the sample, reducing oversampling, and thus saving resources. The inclined block is limited by the clamping rod and also the sampling box, ensuring that the sampling box maintains a stable position during the sampling process, preventing the position of the sampling box from being shifted due to the external environment, reducing the risk of equipment damage or failure, and increasing the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;

[0021] Figure 3 It is a cross-sectional schematic diagram of the filter plate and the rotating column structure of the present invention;

[0022] Figure 4 It is a schematic cross-sectional view of the structure of the mixing device of the present invention;

[0023] Figure 5 It is a cross-sectional schematic diagram of the propeller and the rotating rod structure of the present invention;

[0024] Figure 6 It is a schematic cross-sectional view of the structure of the anti-blocking device of the present invention;

[0025] Figure 7 It is a cross-sectional schematic diagram of the convex rod and convex block structure of the present invention;

[0026] Figure 8 It is a schematic cross-sectional view of the structure of the intermittent door opening and closing device of the present invention;

[0027] Fig. 9 It is a schematic cross-sectional view of the clamping rod and the ramp block structure of the present invention.

[0028] In the figure: 1, machine body; 2, supporting legs; 3, fixing ring; 4, sampling box; 5, analysis equipment; 6, motor; 7, rotating shaft; 8, rotating plate; 9, gear one; 10, electric telescopic rod; 11, sliding rod; 12, rotating rod; 13, gear two; 14, propeller; 15, guard plate; 161, filter plate; 162, rotating column; 163, fixing rod; 164, elastic telescopic rod one; 165, scraper rod; 166, convex rod; 167, hammer; 168, convex block; 171, elastic telescopic rod two; 172, push rod; 173, elastic telescopic rod three; 174, sliding door; 175, fixing block; 176, clamping rod; 177, inclined block; 178, handle. DETAILED DESCRIPTION

[0029] 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.

[0030] See also Figure 1-Figure 9 , one embodiment of the present invention is: a water resource sampling and analysis device for a water conservancy project, comprising a body 1, a support leg 2 is fixedly installed at the bottom of the body 1, a fixing ring 3 is fixedly installed at the top of the body 1, a sampling box 4 is slidably installed inside the body 1, an analysis device 5 is fixedly installed inside the sampling box 4, and a mixing device is arranged inside the body 1;

[0031] The mixing device includes a motor 6, a rotating shaft 7, a rotating plate 8, a gear 1 9, an electric telescopic rod 10, a sliding rod 11, a rotating rod 12, a gear 2 13, a propeller 14 and a guard plate 15. The motor 6 is fixedly mounted on the top of the inner wall of the body 1, the rotating shaft 7 is fixedly mounted on the output end of the motor 6, the rotating plate 8 is fixedly mounted on the circumferential surface of the rotating shaft 7, the gear 1 9 is fixedly mounted on the end of the rotating plate 8 away from the rotating shaft 7, the electric telescopic rod 10 is fixedly mounted on the inner wall of the body 1, the sliding rod 11 is fixedly mounted on the output end of the electric telescopic rod 10, and the rotating rod 12 rotates through the sliding rod 11. Rod 11 and gear 2 13 are fixedly mounted on the circumferential surface of the rotating rod 12 near one end of gear 1 9, propeller 14 is fixedly mounted on the circumferential surface of the rotating rod 12 away from one end of gear 2 13, and guard plate 15 is fixedly mounted on the circumferential surface of the body 1. The rotating plate 8 starts to rotate by the rotation of the rotating shaft 7. The rotating plate 8 rotates to fully stir the water to be sampled and analyzed, so that the substances in the water resources to be sampled and analyzed can be fully mixed, ensuring the uniformity of the water resources during sampling, and preventing the water resources from being sampled and analyzed in a static state, resulting in differences in the analysis and causing deviations.

[0032] Gear 1 9 meshes with gear 2 13, and the sliding rod 11 contacts the body 1. The meshing ensures that gear 1 9 can drive gear 2 13 to rotate when rotating, and the contact ensures that the sliding rod 11 does not move excessively when moving.

[0033] When the present embodiment is working: the traction rope is passed through the hole of the fixing ring 3 to fix it firmly, and then the sampling box 4 is placed inside the machine body 1. After confirming that there are no problems with the machine body 1 and other devices, the machine body 1 fixed by the traction rope is placed in the water area where sampling and analysis is required. After the machine body 1 enters the water, the motor 6 is started, so that the motor 6 drives the rotating shaft 7 to start rotating, and the rotation of the rotating shaft 7 drives the rotating plate 8 to start rotating. The rotating plate 8 rotates to fully stir the water to be sampled and analyzed, so that these substances in the water resources to be sampled and analyzed can be fully mixed, thereby ensuring the uniformity of the water resources during sampling and preventing the water resources from being sampled and analyzed in a static state, resulting in differences in the analysis and causing deviations; while the rotating plate 8 rotates, it drives the gear 9 to start rotating, and the gear 9 rotates When the electric telescopic rod 10 is in motion, the output end of the electric telescopic rod 10 drives the sliding rod 11 to start moving, the sliding rod 11 moves to drive the rotating rod 12 to start moving, the rotating rod 12 moves to drive the gear 2 13 and the propeller 14 to start moving, the gear 2 13 moves to engage with the gear 1 9, the gear 1 9 rotates to drive the gear 2 13 to start rotating, the gear 2 13 rotates to drive the rotating rod 12 to start rotating, the rotating rod 12 rotates to drive the propeller 14 to start rotating, and the propeller 14 rotates to drive the body 1 to move in the water area where sampling and analysis are performed, which helps to enhance the uniformity and representativeness of the water sample, break the water body stratification, prevent sediment interference, simulate the natural water flow environment, avoid interference from surface pollutants, improve sampling efficiency, and reduce human errors.

[0034] See also Figure 1-Figure 9 On the basis of the above embodiment, in another embodiment of the present invention, an anti-blocking device is provided at the bottom of the body 1, and an intermittent door opening and closing device is provided at the top of the sampling box 4. The anti-blocking device includes a filter plate 161, a rotating column 162, a fixing rod 163, an elastic telescopic rod 164 and a scraper rod 165. The filter plate 161 is fixedly installed at the bottom of the body 1, the rotating column 162 is rotatably installed at the bottom of the rotating shaft 7, the fixing rod 163 is fixedly installed on the circumferential surface of the rotating column 162, the elastic telescopic rod 164 is fixedly installed on the circumferential surface of the supporting leg 2, and the scraper rod 165 is fixedly installed on the movable end of the elastic telescopic rod 164. The scraper rod 165 reciprocates to remove larger impurities or garbage that may exist on the filter plate 161, ensuring that the machine equipment will not be blocked by impurities or damage the internal instruments, thereby extending the service life of the equipment, reducing maintenance costs, and preventing larger impurities or garbage from entering the body 1 and causing equipment failure.

[0035] The anti-clogging device also includes a protruding rod 166, a rotary hammer 167 and a protruding block 168. The protruding rod 166 is fixedly mounted on the top of the scraper rod 165, the rotary hammer 167 is rotatably mounted on the top of the filter plate 161, and the protruding block 168 is fixedly mounted on the front of the rotary hammer 167. Vibration is generated by the contact and knocking of the rotary hammer 167 and the filter plate 161. Through the vibration, particles and dirt on the surface of the filter plate 161 may be shaken off or fall off, thereby restoring the filtering efficiency of the filter plate 161 and reducing incomplete filtration or analysis errors caused by blockage of the filter plate 161.

[0036] The scraper rod 165 is in contact with the filter plate 161, and the side where the protruding rod 166 and the protruding block 168 contact each other is set as an inclined surface. A spring 1 is set between the hammer 167 and the filter plate 161. The contact ensures that the scraper rod 165 can clean the surface of the filter plate 161 when it moves, and the inclined surface ensures that the protruding rod 166 can smoothly push the protruding block 168 when it moves. The spring 1 ensures that the hammer 167 can achieve self-reset.

[0037] The intermittent door opening and closing device includes an elastic telescopic rod 2 171, a push rod 172, an elastic telescopic rod 3 173, a sliding door 174 and a fixed block 175. The elastic telescopic rod 2 171 is fixedly installed on the inner wall of the body 1, the push rod 172 is fixedly installed on the movable end of the elastic telescopic rod 2 171, the elastic telescopic rod 3 173 is fixedly installed on the top of the sampling box 4, the sliding door 174 is fixedly installed on the movable end of the elastic telescopic rod 3 173, the fixed block 175 is fixedly installed on the top of the sliding door 174, the clamping rod 176 is slidably installed on the circumferential surface of the body 1, and the inclined block 177 is fixedly installed on the front of the sampling box 4. By intermittently opening the sliding door 174 under the reciprocating push of the scraper rod 165, it is helpful to randomly extract water samples of different time periods from the water flow, thereby avoiding the sampling results from being biased towards the water quality of a specific time period, ensuring the purity of the sample, reducing oversampling, and thus saving resources.

[0038] The intermittent door opening and closing device also includes a clamping rod 176, a ramp block 177 and a handle 178. The clamping rod 176 is slidably mounted on the circumferential surface of the body 1, the ramp block 177 is fixedly mounted on the front of the sampling box 4, and the handle 178 is fixedly mounted on the front of the sampling box 4. The ramp block 177 is restricted by the clamping rod 176 and the sampling box 4 is also restricted at the same time, ensuring that the sampling box 4 maintains a stable position during the sampling process, preventing the position of the sampling box 4 from being offset due to the external environment, reducing the risk of equipment damage or failure, and increasing the service life of the equipment.

[0039] The push rod 172 is in contact with the fixed block 175, and the side where the clamping rod 176 and the inclined block 177 contact each other is set as an inclined surface. A second spring is arranged between the clamping rod 176 and the body 1. The contact ensures that the push rod 172 can push the fixed block 175 to move when it moves, and the inclined surface ensures that the clamping rod 176 and the inclined block 177 fit more closely. The second spring ensures that the clamping rod 176 can achieve self-reset.

[0040] When the embodiment is working, the rotating shaft 7 rotates and drives the rotating column 162 to start rotating, the rotating column 162 drives the fixing rod 163 to start rotating, the fixing rod 163 rotates and drives the scraper rod 165 to start moving, and after the fixing rod 163 no longer drives the scraper rod 165, the elastic telescopic rod 164 drives the scraper rod 165 back to its original position, and the scraper rod 165 reciprocates to remove the larger impurities or garbage on the filter plate 161, so as to ensure that the machine equipment will not be blocked by impurities or damage the internal instruments, thereby extending the service life of the equipment, reducing maintenance costs, and preventing larger impurities from being blocked. Or garbage enters the body 1 and causes equipment failure; when the scraper rod 165 moves, the protruding rod 166 starts to move, and the protruding rod 166 moves to push the protruding block 168 to start moving, and the protruding block 168 moves to drive the hammer 167 to start moving. The hammer 167 moves and resets under the action of spring 1, and the hammer 167 contacts and knocks with the filter plate 161 to generate vibration. Through the vibration, the particles and dirt on the surface of the filter plate 161 may be shaken off or fall off, thereby restoring the filtration efficiency of the filter plate 161 and reducing incomplete filtration or analysis errors caused by blockage of the filter plate 161.

[0041] When the scraper rod 165 moves, the push rod 172 is pushed to start moving, and the push rod 172 moves to push the fixed block 175 to start moving, and the fixed block 175 moves to drive the sliding door 174 to start moving, and the sliding door 174 moves to open the sampling port on the top of the sampling box 4, and the evenly mixed water resources enter the sampling box 4 from the sampling port. After the water resources enter, the analysis equipment 5 starts to work to analyze the water resources entering the sampling box 4. After the scraper rod 165 no longer pushes the push rod 172, the elastic telescopic rod 171 pushes the push rod 172 to reset, and the elastic telescopic rod 173 pushes the sliding door 174 to reset. Under the reciprocating push of the scraper rod 165, the sliding door 174 is intermittently opened, which is helpful to randomly extract water samples of different time periods from the water flow, thereby avoiding The sampling-free result is biased towards the water quality of a certain period of time, ensuring the purity of the sample and reducing over-sampling, thereby saving resources and reducing operating costs; after the sampling is completed, the traction rope is pulled to pull the body 1 ashore, and then the sampling box 4 is removed. Before removing the sampling box 4, the clamping rod 176 is pulled so that the clamping rod 176 and the inclined block 177 are no longer in contact, and the restriction on the inclined block 177 is released. The handle 178 is pulled to take out the sampling box 4, and then the sampling box 4 is placed inside the body 1 and the above operation is repeated so that the clamping rod 176 restricts the inclined block 177 and also restricts the sampling box 4, ensuring that the sampling box 4 maintains a stable position during the sampling process, preventing the position of the sampling box 4 from being offset due to the external environment, reducing the risk of equipment damage or failure, and increasing the service life of the equipment.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water resource sampling and analysis device for a hydraulic project, comprising a body, characterized in that: The bottom of the machine body is fixedly provided with supporting legs, the top of the machine body is fixedly provided with a fixing ring, a sampling box is slidably provided inside the machine body, an analysis device is fixedly provided inside the sampling box, a mixing device is provided inside the machine body, an anti-blocking device is provided at the bottom of the machine body, and an intermittent door opening and closing device is provided at the top of the sampling box; Wherein, the mixing device comprises a motor, a rotating shaft, a rotating plate, a gear 1, an electric telescopic rod, a sliding rod, a rotating rod, a gear 2, a propeller and a guard plate, wherein the motor is fixedly mounted on the top of the inner wall of the machine body, the rotating shaft is fixedly mounted on the output end of the motor, the rotating plate is fixedly mounted on the circumferential surface of the rotating shaft, the gear 1 is fixedly mounted on the end of the rotating plate away from the rotating shaft, the electric telescopic rod is fixedly mounted on the inner wall of the machine body, the sliding rod is fixedly mounted on the output end of the electric telescopic rod, the rotating rod rotates and penetrates the sliding rod, the gear 2 is fixedly mounted on the circumferential surface of the rotating rod close to the end of the gear 1, the propeller is fixedly mounted on the circumferential surface of the rotating rod away from the end of the gear 2, the guard plate is fixedly mounted on the circumferential surface of the machine body, the gear 1 is meshed with the gear 2, and the sliding rod is in contact with the machine body; The anti-clogging device includes a filter plate, a rotating column, a fixed rod, an elastic telescopic rod 1 and a scraper rod, the filter plate is fixedly installed on the bottom of the machine body, the rotating column is rotatably installed on the bottom of the rotating shaft, the fixed rod is fixedly installed on the circumferential surface of the rotating column, the elastic telescopic rod 1 is fixedly installed on the circumferential surface of the supporting leg, and the scraper rod is fixedly installed on the movable end of the elastic telescopic rod 1.

2. A water resource sampling and analysis device for water conservancy projects according to claim 1, characterized in that: The anti-clogging device also includes a convex rod, a rotary hammer and a convex block, wherein the convex rod is fixedly mounted on the top of the scraper rod, the rotary hammer is rotatably mounted on the top of the filter plate, and the convex block is fixedly mounted on the front of the rotary hammer.

3. A water resource sampling and analysis device for water conservancy projects according to claim 2, characterized in that: The scraper rod is in contact with the filter plate, the side where the convex rod and the convex block contact each other is set as an inclined surface, and a spring 1 is set between the rotary hammer and the filter plate.

4. A water resource sampling and analysis device for water conservancy projects according to claim 3, characterized in that: The intermittent door opening and closing device includes an elastic telescopic rod 2, a push rod, an elastic telescopic rod 3, a sliding door and a fixed block. The elastic telescopic rod 2 is fixedly installed on the inner wall of the body, the push rod is fixedly installed on the movable end of the elastic telescopic rod 2, the elastic telescopic rod 3 is fixedly installed on the top of the sampling box, the sliding door is fixedly installed on the movable end of the elastic telescopic rod 3, the fixed block is fixedly installed on the top of the sliding door, a clamping rod is slidably installed on the circumferential surface of the body, and a ramp block is fixedly installed on the front of the sampling box.

5. A water resource sampling and analysis device for water conservancy projects according to claim 4, characterized in that: The intermittent door opening and closing device also includes a clamping rod, a slope block and a handle, wherein the clamping rod is slidably mounted on the circumferential surface of the machine body, the slope block is fixedly mounted on the front of the sampling box, and the handle is fixedly mounted on the front of the sampling box.

6. A water resource sampling and analysis device for water conservancy projects according to claim 5, characterized in that: The push rod is in contact with the fixed block, a surface of the clamping rod in contact with the inclined surface block is arranged as an inclined surface, and a second spring is arranged between the clamping rod and the machine body.

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