Portable river flood forecasting device and use method

Abstract

The present invention belongs to the field of water level monitoring technology, specifically, a portable river flood forecasting device and a method of use, including a column, a support assembly and a water level detection assembly; the bottom of the column is fixedly connected to a filter cylinder; the outer side of the column is fixedly connected to a gear ring; the surface of the support assembly is rotatably connected to a gear; the water level detection assembly includes a slide rod slidably connected to the inside of the column; the lower end of the slide rod extends to the inside of the filter cylinder and is fixedly connected to a floating platform; the upper side of the floating platform is fixedly connected to a distance sensor. The gear is driven to rotate by a motor, and the column and the filter cylinder are driven to rotate by the gear ring, and the rotation angle is 180°. At this time, the blocked side of the filter cylinder rotates to the downstream direction of the water flow, so that the water flow can form a backwashing effect on the blocked side when passing through the filter cylinder, so that the debris is quickly separated from the filter cylinder and carried away by the water flow, ensuring the water permeability of the filter cylinder.

Description

Technical Field

[0001] The invention belongs to the technical field of water level monitoring, in particular to a portable river flood forecasting device and a use method thereof. Background Art

[0002] The river flood forecasting device is an important technological innovation in recent years to deal with the increasingly serious flood problem, especially in areas where flood disasters occur frequently. With the intensification of global climate change, the frequency of extreme weather events has increased year by year. Floods, as a typical natural disaster, not only threaten people's lives and property safety, but also cause huge losses to the economy and society. Especially in river basins, changes in factors such as precipitation, flow and river morphology often lead to the formation of sudden floods.

[0003] A Chinese patent application CN218156404U discloses a flood season river water level warning device, the technical solution of which is as follows: comprising a bottom plate, a pin fixedly connected to the center of the bottom of the bottom plate, a support rod fixedly connected to the top of the bottom plate, a connection box connected through the top of the support rod, stabilizing components arranged on both sides of the bottom plate, a baffle slidably connected to the top of the bottom plate, and a filter screen fixedly connected to the top of the baffle. In this technology, by setting a stabilizing component, the rack drives the lifting screw to rotate through the transmission gear, the lifting screw drives the spike to move in the groove, the spike is inserted into the soil at the bottom of the river channel, and the stability of the connection between the bottom plate and the bottom of the river channel is increased. At the same time, the rack drives the sliding rod to move, and the sliding rod drives the support plate to move to one side, increasing the contact surface between the bottom plate and the bottom of the river channel, thereby improving the stability of the bottom plate, which can effectively prevent the monitoring alarm device from tipping over due to excessive water flow during the flood season, and improve the stability of the monitoring alarm device.

[0004] However, the above technology often has the following defects: it uses a filter to block debris in the river water to prevent the debris from affecting the water level detection component, but the coverage range of the filter is limited, and when a lot of debris accumulates on the surface of the filter, the water permeability of the filter will be reduced. On the one hand, it will lead to a decrease in the contact efficiency between the water level detection component and the real-time water flow. On the other hand, the blocked filter will increase the resistance to the water flow, making it easy to be impacted and damaged in the turbulent water flow.

[0005] To this end, the present invention provides a portable river flood forecasting device and a use method thereof. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: a portable river flood forecasting device described in the present invention comprises a column, a support component and a water level detection component;

[0008] The column is rotatably connected to the surface of the support assembly; a hard filter cylinder is fixedly connected to the bottom of the column, and the lower end of the filter cylinder is sealed; a gear ring is fixedly connected to the outer side of the column; a gear is rotatably connected to the surface of the support assembly, and the gear is driven by a motor; the gear and the gear ring are meshed with each other;

[0009] The support assembly is used to support the column and the filter cylinder on the river bank;

[0010] The water level detection component is used to detect the water level height of the river in real time; the water level detection component includes a sliding rod slidably connected to the inside of the column; the lower end of the sliding rod extends to the inside of the filter cylinder and is fixedly connected to a floating platform; a distance sensor is fixedly connected to the upper side of the floating platform.

[0011] Preferably, the support assembly includes a fixed seat; a support plate is arranged on the surface of the fixed seat; the column passes through the support plate and is rotatably connected thereto; a reinforcement strip is fixedly connected to the lower side of the support plate; a limiting ring is fixedly connected to the bottom of the reinforcement strip, and the limiting ring is sleeved on the outside of the filter cylinder and rotatably connected thereto; a group of tripods are evenly distributed on the surface of the reinforcement strip.

[0012] Preferably, the fixed seat is designed to be "U"-shaped; the end of the support plate is slidably connected to the fixed seat through a guide rod; a spring 1 is fixedly connected between the two sides of the support plate and the fixed seat; a "U"-shaped pressure seat is provided at the end of the tripod; a movable block is slidably connected to the surface of the pressure seat through a guide rod, and the movable block is fixedly connected to the tripod; a spring 2 is fixedly connected between the two sides of the movable block and the pressure seat; a group of convex thorns are evenly distributed on the side of the pressure seat away from the movable block.

[0013] Preferably, an annular shell is fixedly connected to the lower side of the support plate; the annular shell is sleeved on the outside of the column and there is a gap between the column; a pair of fixed plates are fixedly connected to the inside of the annular shell; a pair of movable plates are fixedly connected to the outside of the column, and the movable plates are slidably connected to the inside of the annular shell; a pair of arc-shaped water storage parts are fixedly connected between the fixed plates and the movable plates respectively; a water guide bar is connected to the lower side of the water storage part, and the lower end of the water guide bar extends to the bottom of the filter cylinder; the outer side of the water guide bar is coated with a flexible isolation tube; the water storage part and the water guide bar are both made of water-absorbing material.

[0014] Preferably, a groove is provided on the upper side of the floating platform, and the distance sensor is located inside the groove; an annular cover is fixedly connected to the upper side of the floating platform at a position corresponding to the groove; a slide groove is provided inside the floating platform at a position corresponding to the groove; a blocking block is slidably connected inside the slide groove; a response block is fixedly connected between the blocking block and the floating platform; a water diversion hole is provided between the slide groove and the upper side of the floating platform; and the response block is made of a water-swelling material.

[0015] Preferably, an arc-shaped shielding sheet is fixedly connected to the upper side of the floating platform at a position corresponding to the water diversion hole.

[0016] Preferably, an elastic hollow piece is fixedly connected between the support plate and the fixing seat; the hollow piece is connected to a flexible conduit; the other end of the conduit passes through the slide rod and is connected to the slide groove.

[0017] Preferably, a follower plate is hinged inside the slide groove at a position corresponding to the conduit; and an elastic strip is fixedly connected between the follower plate and the floating platform.

[0018] A method for using a portable river flood forecasting device, which is applicable to the portable river flood forecasting device, comprises the following steps:

[0019] S1: Pull the support plate to insert the convex thorns of the pressure seat into the rock and soil on the river bank, and then fix the fixing seat to the shore foundation, so as to set up the column and the filter cylinder on the shore;

[0020] S2: During the water level detection process, the floating platform floats up and down as the water level changes. The distance between it and the column is measured in real time by the distance sensor to obtain the height information of the river water level;

[0021] S3: The water level detection component is covered by a filter cylinder to filter and block the debris in the water flow to prevent the debris from affecting the water level detection work;

[0022] S4: The motor drives the column and the filter cylinder to rotate 180 degrees regularly, and the blocked side of the filter cylinder rotates to the downstream direction of the water flow, which forms a backwashing effect on the filter cylinder, so that the debris is quickly separated from the filter cylinder and carried away by the water flow;

[0023] S5: The water is transferred upward to the water storage part inside the annular shell through the water guide bar. When the column rotates, it can drive the movable sheet to slide inside the annular shell, and the movable sheet and the fixed sheet are used to squeeze the water storage part;

[0024] S6: The water inside the water storage part is squeezed out and flows downward along the gap between the annular shell and the column, flushing the filter cylinder from top to bottom, cleaning the part of the filter cylinder above the water level, and achieving all-round cleaning of the filter cylinder.

[0025] The beneficial effects of the present invention are as follows:

[0026] 1. The portable river flood forecasting device and the method of use described in the present invention provide a filter cylinder to fully cover the water level detection component, thereby further preventing floating objects from the surrounding from colliding with and damaging the water level detection component, thereby extending its service life. The filter cylinder can filter and block debris in the water flow, thereby preventing the debris from adhering to the surface of the floating platform and affecting its normal floating.

[0027] 2. A portable river flood forecasting device and method of use described in the present invention drives the gears to rotate through a motor, and utilizes the gear ring to drive the column and the filter drum to rotate, and the rotation angle is 180°. At this time, the blocked side of the filter drum rotates to the downstream direction of the water flow, so that the water flow can form a backwash effect on the blocked side when passing through the filter drum, so that the debris is quickly separated from the filter drum and carried away by the water flow, and the unblocked side of the filter drum rotates to the upstream direction of the water flow to ensure the filtering effect on the water flow. When this side is blocked, the motor drives the column and the filter drum to rotate 180° in the opposite direction, and the cycle is carried out in this way. By regularly controlling the motor to drive the filter drum to rotate, the filter drum can be fully automatically circulated and cleaned, the water permeability of the filter drum is guaranteed, the contact efficiency between the water level detection component and the real-time water flow is improved, and the problem of increased water resistance caused by the blockage of the filter drum is avoided.

[0028] 3. The portable river flood forecasting device and the method of use described in the present invention support and fix the columns and filter cylinders in combination through support plates, reinforcement strips, limit rings and triangular plates, thereby ensuring the all-round limiting effect of the columns and the filter cylinders, preventing them from tilting due to the turbulent water flow, and ensuring that the water level detection components can work smoothly. The structure has sufficient strength and is relatively convenient and quick to install. It can be directly set up on the river bank when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] Figure 1 is a stereogram of the present invention;

[0031] Figure 2 It is a structural schematic diagram of the tripod in the present invention;

[0032] Figure 3 It is a structural schematic diagram of the fixing seat in the present invention;

[0033] Figure 4 It is a structural schematic diagram of the pressure seat in the present invention;

[0034] Figure 5 is a cross-sectional view of a column in the present invention;

[0035] Figure 6 is a cross-sectional view of the floating platform of the present invention;

[0036] Figure 7 yes Figure 6 A partial enlarged view of the middle part;

[0037] Figure 8 It is a schematic flow chart of the method of the present invention.

[0038] In the figure: column 1, filter cylinder 2, gear ring 3, gear 4, motor 5, slide rod 6, floating platform 7, distance sensor 8, fixed seat 9, support plate 10, reinforcement strip 11, limit ring 12, tripod 13, spring 14, pressure seat 15, movable block 16, spring 2 17, convex thorn 18, annular shell 19, fixed plate 20, movable plate 21, water storage part 22, isolation pipe 23, groove 24, annular cover 25, slide 26, blocking block 27, response block 28, water diversion hole 29, shielding plate 30, hollow part 31, conduit 32, follower plate 33, elastic strip 34. DETAILED DESCRIPTION

[0039] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0040] like Figures 1 to 7 As shown, a portable river flood forecasting device according to the present invention comprises a column 1, a support component and a water level detection component;

[0041] The column 1 is rotatably connected to the surface of the support assembly; a hard filter cylinder 2 is fixedly connected to the bottom of the column 1, and the lower end of the filter cylinder 2 is sealed; a gear ring 3 is fixedly connected to the outer side of the column 1; a gear 4 is rotatably connected to the surface of the support assembly, and the gear 4 is driven by a motor 5; the gear 4 and the gear ring 3 are meshed with each other;

[0042] The support assembly is used to support the column 1 and the filter cylinder 2 on the river bank;

[0043] The water level detection component is used to detect the water level height of the river in real time; the water level detection component includes a slide rod 6 slidably connected to the inside of the column 1; the lower end of the slide rod 6 extends to the inside of the filter cylinder 2 and is fixedly connected to a floating platform 7; the upper side of the floating platform 7 is fixedly connected to a distance sensor 8.

[0044] The river flood forecasting device in the prior art uses a filter to block debris in the river water to prevent the debris from affecting the water level detection component. However, the coverage range of the filter is limited, and when a lot of debris accumulates on the surface of the filter, the water permeability of the filter will be reduced. On the one hand, the contact efficiency between the water level detection component and the real-time water flow is reduced. On the other hand, the blocked filter will increase the resistance to the water flow, making it easy to be impacted and damaged in the turbulent water flow.

[0045] The working principle of the water level detection component of the present invention is as follows: the floating platform 7 floats on the water surface and floats up and down inside the filter cylinder 2 as the water level changes. The detection end of the distance sensor 8 faces upward, and the distance between it and the column 1 is measured in real time to obtain the height information of the water level in the river channel, so that the staff can calculate and predict the probability of flood occurrence. The type of distance sensor 8 can be one of ultrasonic, infrared, and laser rangefinders.

[0046] By providing the filter cylinder 2 to fully cover the water level detection component, it is further prevented from being damaged by the impact of floating objects from the surroundings, thereby extending its service life. The filter cylinder 2 can filter and block debris in the water flow, preventing the debris from adhering to the surface of the floating platform 7 and affecting its normal floating. During this process, some debris may be carried away by the water flow along the surface of the filter cylinder 2, while other debris may remain on the surface of the filter cylinder 2. Therefore, after a period of time, more debris will accumulate on one side of the filter cylinder 2, clogging the mesh of the filter cylinder 2 and reducing the water permeability.

[0047] In order to deal with the problem of blockage of the filter cylinder 2, the gear 4 is driven to rotate by the motor 5, and the ring gear 3 is used to drive the column 1 and the filter cylinder 2 to rotate, and the rotation angle is 180°. At this time, the blocked side of the filter cylinder 2 rotates to the downstream direction of the water flow. Therefore, the water flow can form a backwashing effect on the blocked side when passing through the filter cylinder 2, so that the debris is quickly separated from the filter cylinder 2 and is taken away by the water flow, and the unblocked side of the filter cylinder 2 rotates to the upstream direction of the water flow to ensure the filtering effect on the water flow. When this side is blocked, the motor 5 drives the column 1 and the filter cylinder 2 to rotate 180° in the opposite direction, and the cycle is carried out in this way. By regularly controlling the motor 5 to drive the filter cylinder 2 to rotate, the filter cylinder 2 can be fully automatically circulated and cleaned, the water permeability of the filter cylinder 2 is guaranteed, the contact efficiency between the water level detection component and the real-time water flow is improved, and the problem of increased water resistance caused by the blockage of the filter cylinder 2 is avoided.

[0048] As a preferred embodiment of the present invention, the support assembly includes a fixing seat 9; a support plate 10 is provided on the surface of the fixing seat 9; the column 1 passes through the support plate 10 and is rotatably connected thereto; a reinforcing strip 11 is fixedly connected to the lower side of the support plate 10; a limiting ring 12 is fixedly connected to the bottom of the reinforcing strip 11, and the limiting ring 12 is sleeved on the outside of the filter cylinder 2 and is rotatably connected thereto; a group of tripods 13 are evenly distributed on the surface of the reinforcing strip 11. The column 1 and the filter cylinder 2 are combinedly supported and fixed by the support plate 10, the reinforcing strip 11, the limiting ring 12 and the triangular plate to ensure the all-round limiting effect of the column 1 and the filter cylinder 2, prevent them from tilting due to the turbulent water flow, and ensure that the water level detection assembly can work smoothly. The structure has sufficient strength and is relatively convenient and quick to install. When in use, it can be directly erected on the bank of the river.

[0049] The fixed seat 9 is designed to be in a "U" shape; the end of the support plate 10 is slidably connected to the fixed seat 9 through a guide rod; a spring 14 is fixedly connected between the two sides of the support plate 10 and the fixed seat 9; a "U"-shaped pressure seat 15 is provided at the end of the tripod 13; a movable block 16 is slidably connected to the surface of the pressure seat 15 through a guide rod, and the movable block 16 is fixedly connected to the tripod 13; a spring 2 17 is fixedly connected between the two sides of the movable block 16 and the pressure seat 15; a group of convex thorns 18 are evenly distributed on the side of the pressure seat 15 away from the movable block 16. Since there are a large number of rapids and undercurrents in the river channel during the flood season, they impact the filter cylinder 2 for a long time, which may easily cause the filter cylinder 2 to be deformed or even damaged. During installation, the present invention pulls the support plate 10 to insert the convex thorns 18 of the pressure seat 15 into the rock and soil on the shore, and then fixes the fixing seat 9 to the shore foundation. During the water level detection process, when the water flow impacts the filter cylinder 2, the entire device produces a small lateral displacement, causing the spring 14 and the spring 2 17 to deform, forming a buffering effect, unloading the impact of the water flow, and further improving the device's resistance to turbulent water flow.

[0050] As a preferred embodiment of the present invention, an annular shell 19 is fixedly connected to the lower side of the support plate 10; the annular shell 19 is sleeved on the outside of the column 1 and there is a gap between the column 1; a pair of fixed plates 20 are fixedly connected to the inside of the annular shell 19; a pair of movable plates 21 are fixedly connected to the outside of the column 1, and the movable plates 21 are slidably connected to the inside of the annular shell 19; a pair of arc-shaped water storage parts 22 are fixedly connected between the fixed plates 20 and the movable plates 21 respectively; a water guide bar is connected to the lower side of the water storage part 22, and the lower end of the water guide bar extends to the bottom of the filter cylinder 2; the outer side of the water guide bar is coated with a flexible isolation tube 23; the water storage part 22 and the water guide bar are both made of water-absorbing materials, which can be sponge, foam, cotton cloth and other materials.

[0051] Taking into account the fluctuating water level in the river channel, if debris is accumulated on one side of the filter drum 2 and the water level drops, resulting in the debris accumulation being located above the water level, even if the filter drum 2 rotates at this time, the debris accumulation cannot be flushed by the water flow. Therefore, the present invention transmits water upward to the water storage part 22 inside the annular shell 19 through the water guide bar. When the column 1 rotates, it can drive the movable sheet 21 to slide inside the annular shell 19, and then use the movable sheet 21 and the fixed sheet 20 to squeeze the water storage part 22. After the water inside the water storage part 22 is squeezed out, it flows downward along the gap between the annular shell 19 and the column 1, flushing the filter drum 2 from top to bottom, cleaning the part of the filter drum 2 above the water level, and thus cleaning the filter drum 2 in all directions to prevent the debris above the water level from drying and hardening, which may cause subsequent difficulty in removal.

[0052] By setting the lower end of the water guide bar at the bottom of the filter cylinder 2 and covering the isolation tube 23 on the outside of the water guide bar, the water absorbed by the lower end of the water guide bar when absorbing water is the water flow after being filtered by the filter cylinder 2, preventing a large amount of impurities from entering the water guide bar and the water storage part 22 and causing blockage, thereby extending their service life.

[0053] As a preferred embodiment of the present invention, a groove 24 is provided on the upper side of the floating platform 7, and the distance sensor 8 is located inside the groove 24; an annular cover 25 is fixedly connected to the upper side of the floating platform 7 at a position corresponding to the groove 24; a slide groove 26 is provided inside the floating platform 7 at a position corresponding to the groove 24; a blocking block 27 is slidably connected inside the slide groove 26; a response block 28 is fixedly connected between the blocking block 27 and the floating platform 7; a water inlet hole 29 is provided between the slide groove 26 and the upper side of the floating platform 7; the response block 28 is made of water-swellable material, specifically, it can be expansion rubber, polymer hydrogel and other materials. After such material absorbs water and expands, as the water inside it gradually dries, its volume will gradually shrink and recover, thereby achieving repeated use.

[0054] If the water level continues to rise and reaches the floating limit of the floating platform 7, the floating platform 7 is blocked by the column 1 and stops floating, and then the water gradually submerges the floating platform 7 and enters the chute 26 through the water inlet hole 29 (at this time the water level has not yet submerged the annular cover 25, and the water cannot enter the groove 24), so that the response block 28 expands when it encounters water and pushes the blocking block 27 to move toward the groove 24, thereby sealing the distance sensor 8 in the groove 24, preventing the distance sensor 8 from being submerged by water and being soaked, corroded and damaged, so that it can continue to be used after the water level recedes.

[0055] When the water level recedes, the response block 28 inside the chute 26 gradually dries and shrinks to restore, driving the blocking block 27 to reset and allowing the groove 24 to be open again, so that the distance sensor 8 can continue to measure the water level height, further improving the emergency response capability of the device against various emergencies.

[0056] An arc-shaped shielding sheet 30 is fixedly connected to the upper side of the floating platform 7 at a position corresponding to the water diversion hole 29. By setting the shielding sheet 30 to cover the water diversion hole 29, when the water level is lower than the water diversion hole 29, the shielding sheet 30 can be used to shield the splashing water droplets generated by the rapid current in the water, preventing the water droplets from directly splashing into the chute 26 through the water diversion hole 29 and causing the response block 28 to trigger expansion in advance.

[0057] As a preferred embodiment of the present invention, an elastic hollow member 31 is fixedly connected between the support plate 10 and the fixing seat 9; the hollow member 31 is connected to a flexible conduit 32; the other end of the conduit 32 passes through the slide bar 6 and is connected to the slide 26. When the water level recedes, as the impact of the water flow causes the support plate 10 to move sideways, the hollow member 31 is squeezed by the support plate 10 and the fixing seat 9, and then the compression-restoration effect of the hollow member 31 prompts the conduit 32 to continuously eject and inhale air inside the slide 26, and cooperate with the water inlet 29 to increase the degree of air flow inside the slide 26, and then the flowing air quickly takes away the moisture inside the response block 28, speeding up its free contraction speed, so that the groove 24 can be quickly opened and allow the distance sensor 8 to participate in the water level detection work as soon as possible.

[0058] As a preferred embodiment of the present invention, a follower plate 33 is hingedly connected inside the chute 26 at a position corresponding to the conduit 32; an elastic strip 34 is fixedly connected between the follower plate 33 and the floating platform 7. When the air inside the conduit 32 is sprayed into the chute 26, it can impact the follower plate 33. On the one hand, the follower plate 33 is used to guide the direction of the airflow, increasing the range of action of the airflow, so that all parts of the response block 28 can be fully dried by the flowing air. On the other hand, when the airflow impacts the follower plate 33, it can drive the follower plate 33 to swing, and then the follower plate 33 knocks on the surface of the response block 28, prompting the response block 28 to produce a small amplitude vibration, further accelerating the loss of moisture inside the response block 28.

[0059] like Figure 8 As shown, a method for using a portable river flood forecasting device according to the present invention is applicable to the portable river flood forecasting device, and comprises the following steps:

[0060] S1: Pull the support plate 10 so that the thorns 18 of the pressure seat 15 are inserted into the rock and soil on the river bank, and then fix the fixing seat 9 to the shore, so that the column 1 and the filter cylinder 2 are erected on the shore;

[0061] S2: During the water level detection process, the floating platform 7 floats up and down as the water level changes, and the distance between it and the column 1 is measured in real time by the distance sensor 8 to obtain the height information of the river water level;

[0062] S3: The water level detection component is covered by the filter cylinder 2 to filter and block the debris in the water flow to prevent the debris from affecting the water level detection work;

[0063] S4: The motor 5 drives the column 1 and the filter cylinder 2 to rotate 180 degrees at regular intervals, so that the blocked side of the filter cylinder 2 rotates to the downstream direction of the water flow, forming a backwashing effect on the filter cylinder 2, so that the debris is quickly separated from the filter cylinder 2 and taken away by the water flow;

[0064] S5: The water is transferred upward to the water storage part 22 inside the annular shell 19 through the water guide bar. When the column 1 rotates, it can drive the movable sheet 21 to slide inside the annular shell 19, and the movable sheet 21 and the fixed sheet 20 are used to squeeze the water storage part 22;

[0065] S6: The water inside the water storage member 22 is squeezed out and flows downward along the gap between the annular shell 19 and the column 1, flushing the filter cylinder 2 from top to bottom, cleaning the part of the filter cylinder 2 above the water level, and achieving all-round cleaning of the filter cylinder 2.

[0066] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0067] In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0068] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A portable river flood forecasting device, comprising a column (1), a support component and a water level detection component; Features: The column (1) is rotatably connected to the surface of the support component; a hard filter cylinder (2) is fixedly connected to the bottom of the column (1), and the lower end of the filter cylinder (2) is sealed; a gear ring (3) is fixedly connected to the outer side of the column (1); a gear (4) is rotatably connected to the surface of the support component, and the gear (4) is driven by a motor (5); the gear (4) and the gear ring (3) are meshed with each other; The support assembly is used to support the column (1) and the filter cylinder (2) on the bank of the river; The water level detection component is used to detect the water level height of a river in real time; the water level detection component comprises a slide rod (6) slidably connected to the inside of a column (1); the lower end of the slide rod (6) extends to the inside of a filter cylinder (2) and is fixedly connected to a floating platform (7); the upper side of the floating platform (7) is fixedly connected to a distance sensor (8).

2. A portable river flood forecasting device according to claim 1, characterized in that: The support assembly comprises a fixing seat (9); a support plate (10) is arranged on the surface of the fixing seat (9); the upright column (1) passes through the support plate (10) and is rotatably connected thereto; a reinforcing strip (11) is fixedly connected to the lower side of the support plate (10); a limiting ring (12) is fixedly connected to the bottom of the reinforcing strip (11), and the limiting ring (12) is sleeved on the outside of the filter cylinder (2) and is rotatably connected thereto; a group of tripods (13) are evenly distributed on the surface of the reinforcing strip (11).

3. A portable river flood forecasting device according to claim 2, characterized in that: The fixed seat (9) is designed to be in a "U" shape; the end of the support plate (10) is slidably connected to the fixed seat (9) via a guide rod; a spring 1 (14) is fixedly connected between the two sides of the support plate (10) and the fixed seat (9); a "U"-shaped pressure seat (15) is provided at the end of the tripod (13); a movable block (16) is slidably connected to the surface of the pressure seat (15) via a guide rod, and the movable block (16) is fixedly connected to the tripod (13); a spring 2 (17) is fixedly connected between the two sides of the movable block (16) and the pressure seat (15); a group of convex thorns (18) are evenly distributed on one side of the pressure seat (15) away from the movable block (16).

4. A portable river flood forecasting device according to claim 3, characterized in that: The support plate (10) is fixedly connected to an annular shell (19) on the lower side; the annular shell (19) is sleeved on the outside of the column (1) and has a gap with the column (1); a pair of fixed plates (20) are fixedly connected inside the annular shell (19); a pair of movable plates (21) are fixedly connected to the outside of the column (1), and the movable plates (21) are slidably connected to the inside of the annular shell (19); a pair of arc-shaped water storage parts (22) are fixedly connected between the fixed plates (20) and the movable plates (21); a water guide bar is connected to the lower side of the water storage part (22), and the lower end of the water guide bar extends to the bottom of the filter screen cylinder (2); the outer side of the water guide bar is covered with a flexible isolation tube (23); the water storage part (22) and the water guide bar are both made of water-absorbing material.

5. A portable river flood forecasting device according to claim 4, characterized in that: A groove (24) is provided on the upper side of the floating platform (7), and the distance sensor (8) is located inside the groove (24); an annular cover (25) is fixedly connected to the upper side of the floating platform (7) at a position corresponding to the groove (24); a slide groove (26) is provided inside the floating platform (7) at a position corresponding to the groove (24); a blocking block (27) is slidably connected inside the slide groove (26); a response block (28) is fixedly connected between the blocking block (27) and the floating platform (7); a water diversion hole (29) is provided between the slide groove (26) and the upper side of the floating platform (7); and the response block (28) is made of a water-swellable material.

6. A portable river flood forecasting device according to claim 5, characterized in that: An arc-shaped shielding sheet (30) is fixedly connected to the upper side of the floating platform (7) at a position corresponding to the water diversion hole (29).

7. A portable river flood forecasting device according to claim 6, characterized in that: An elastic hollow member (31) is fixedly connected between the support plate (10) and the fixing seat (9); the hollow member (31) is connected to a flexible conduit (32); the other end of the conduit (32) passes through the slide rod (6) and is connected to the slide groove (26).

8. A portable river flood forecasting device according to claim 7, characterized in that: A follower plate (33) is hingedly connected inside the slide groove (26) at a position corresponding to the guide tube (32); an elastic strip (34) is fixedly connected between the follower plate (33) and the floating platform (7).

9. A method for using a portable river flood forecasting device, the method being applicable to the portable river flood forecasting device according to claim 8, characterized in that: The following steps are involved: S1: The support plate (10) is pulled so that the ridges (18) of the pressure seat (15) are inserted into the rock and soil on the bank of the river, and then the fixing seat (9) is fixed to the bank foundation, so that the column (1) and the filter cylinder (2) are erected on the bank; S2: During the water level detection process, the floating platform (7) floats up and down as the water level changes, and the distance between it and the column (1) is measured in real time by the distance sensor (8) to obtain the height information of the river water level; S3: The water level detection component is covered by a filter cylinder (2) to filter and block debris in the water flow, thereby preventing the debris from affecting the water level detection work; S4: The motor (5) drives the column (1) and the filter cylinder (2) to rotate 180 degrees at regular intervals, so that the blocked side of the filter cylinder (2) rotates to the downstream direction of the water flow, thus forming a backwashing effect on the filter cylinder (2), so that the debris is quickly separated from the filter cylinder (2) and is taken away by the water flow.

10. The method for using the portable river flood forecasting device according to claim 9, characterized in that: The method further comprises the following steps: S5: The water is transmitted upward to the water storage part (22) inside the annular shell (19) through the water guide bar, and when the column (1) rotates, it can drive the movable sheet (21) to slide inside the annular shell (19), and the movable sheet (21) and the fixed sheet (20) are used to squeeze the water storage part (22); S6: After the water inside the water storage member (22) is squeezed out, it flows downward along the gap between the annular shell (19) and the column (1), flushing the filter cylinder (2) from top to bottom, cleaning the area above the water level of the filter cylinder (2), and achieving all-round cleaning of the filter cylinder (2).

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