Float water level meter self-recording platform sedimentation tank structure and dredging method

Abstract

The invention discloses a grit chamber structure of a float water level gauge self-recording platform, comprising a grit chamber arranged on a riverbed in a river channel, and a top cover buckled on the upper opening of the grit chamber; the upper part of the inner cavity of the grit chamber is connected to the lower part of the self-recording well of the float water level gauge self-recording platform through a water diversion pipeline, and the inner cavity of the grit chamber is provided with a connecting pipeline communicating with the river channel; a rubber bag matching the shape of the inner cavity of the grit chamber in a filled state is arranged at the bottom of the grit chamber, and the inner cavity of the rubber bag is connected to a pump body arranged in an instrument room of the float water level gauge self-recording platform through a pipeline; two chutes are arranged at the water inlet of the water diversion pipeline in the grit chamber, and the two chutes are arranged parallel to each other and vertically on both sides of the water inlet of the water diversion pipeline, and a water stop plate is slidably inserted between the two chutes, and a plurality of water permeable holes are opened on the top cover of the grit chamber. The advantage of the invention is that the dredging operation does not require personnel to enter the pool, which not only saves heavy physical labor, but also makes the dredging operation more economical, efficient, environmentally friendly and safe.

Description

Technical Field

[0001] The invention relates to a hydrological and water level observation facility in the water conservancy industry, in particular to a sand settling tank structure of a float water level gauge self-recording platform and a dredging method thereof. Background Art

[0002] The desilting operation of the sedimentation tank of the float water level gauge self-recording platform is a necessary engineering measure to ensure the normal operation of the water level observation facilities (float water level gauge self-recording platform). This measure greatly reduces the problem that the water level observation well in the river with high sediment content is easily blocked by silt accumulation, which leads to the failure of the float water level gauge to operate normally. It is of great significance to improve the service life of the float water level gauge self-recording platform and ensure the continuity of water level observation data. Under normal circumstances, for the float water level gauge self-recording platform of the river, especially the float water level gauge self-recording platform of the silt-rich river, in order to reduce the silt accumulation in the self-recording well and the water diversion pipe, and to ensure the normal operation of the float water level gauge self-recording platform, one or more sedimentation tanks are usually installed at appropriate positions in the middle of the water diversion pipe, so that the silt entering the water diversion pipe is deposited here, and the sedimentation tank is inspected and desilted before the flood season. The sedimentation tank also needs to be desilted after the flood or after the flood season. At present, the main way to desilt the sedimentation tank is to manually enter the pool to dig out or transport it out. However, in order to satisfy the sedimentation of silt, the bottom elevation of the sedimentation tank must be lower than the designed water level. Therefore, in addition to the deposited silt, there is also accumulated water in the sedimentation tank. After entering the tank, people will sink into the silt to a certain extent, which causes many inconveniences to the dredging work and even poses certain risks. Especially during the flood season or in the sedimentation tanks with float water level gauges located in the offshore tidal river sections, the float water level gauges are often submerged, making it impossible for people to enter the tanks for dredging operations. Summary of the invention

[0003] The object of the present invention is to provide a float water level gauge self-recording platform sedimentation tank structure. Another object of the present invention is to provide a sedimentation tank dredging method, which can not only ensure the dredging efficiency and effect, but also improve the safety of the operation and maintenance of the self-recording platform sedimentation tank.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] The grit chamber structure of the float water level gauge self-recording platform described in the present invention comprises a grit chamber arranged on the riverbed in the river channel, and a top cover buckled on the upper opening of the grit chamber; the upper part of the inner cavity of the grit chamber is connected with the lower part of the self-recording well of the float water level gauge self-recording platform through a water diversion pipe, and a connecting pipe communicating with the river channel is arranged on the side wall of the upper part of the inner cavity of the grit chamber relative to the water diversion pipe; a rubber bag matching the shape of the inner cavity of the grit chamber in a filled state is arranged at the bottom of the grit chamber, and the inner cavity of the rubber bag is connected with a pump body arranged in the instrument room of the float water level gauge self-recording platform through a pipe; two slide grooves are arranged on the side wall of the water inlet of the water diversion pipe in the grit chamber, and the two slide grooves are arranged parallel and vertically on both sides of the water inlet of the water diversion pipe, a water stop plate is slidably inserted between the two slide grooves, and a plurality of water permeable holes are opened on the top cover of the grit chamber.

[0006] The two slides are parallel to each other and vertically embedded in the pool walls on both sides of the water inlet of the water diversion pipe. A top plate is provided on the upper edge of the water stop plate slidably inserted between the two slides, and the top plate is horizontally extended toward the sand settling tank.

[0007] The water permeable holes arranged on the top cover are anti-fouling grille type water permeable holes.

[0008] The pump body is an air pump or a water pump.

[0009] The method for desilting a grit chamber of a float water level gauge self-recording platform of the present invention comprises the following steps: during desilting operation, an air pump or a water pump arranged in an instrument room of the float water level gauge self-recording platform is turned on to fill air or water into the rubber bag so that the rubber bag gradually expands, and the gradually expanding rubber bag lifts up the sediment and accumulated water deposited on the top thereof; when the rubber bag expands to the point that its upper surface contacts the top plate of the water stop plate, the water stop plate gradually moves upward under the action of the expanded rubber bag until the water inlet of the water diversion pipe is closed; in the process that the water stop plate gradually closes the water inlet of the water diversion pipe from bottom to top, the sediment deposited in the grit chamber flows into the river channel from the connecting pipe under the action of natural water flow; after the water stop plate completely closes the water inlet of the water diversion pipe, the sediment located on the top of the filled rubber bag is discharged into the river channel from the water permeable hole on the top cover of the grit chamber, thereby completing the desilting operation of the grit chamber; after the desilting operation of the grit chamber is completed, the air or water in the rubber bag is discharged through the air pump or the water pump, so that the rubber bag is stacked on the bottom of the grit chamber.

[0010] The advantage of the present invention is that by filling air or water into the rubber bag, the silt deposited on the upper part of the rubber bag in the sedimentation tank is lifted to a height where there is natural water flow, and the natural water flow is used to flush the silt and remove the silt. After the dredging operation is completed, the air or water in the rubber bag can be discharged. The dredging operation does not require personnel to enter the pool, which not only saves heavy physical labor, but also makes the dredging operation more economical, efficient, environmentally friendly and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the arrangement of the self-recording platform of the float water level gauge and the sand settling tank of the present invention.

[0012] Figure 2 It is a schematic diagram of the elevation structure of the grit chamber of the present invention.

[0013] Figure 3 yes Figure 1 Schematic diagram of the top view structure.

[0014] Figure 4 It is a schematic diagram of the working state of the desilting operation of the sedimentation tank according to the present invention. DETAILED DESCRIPTION

[0015] The following is a detailed description of an embodiment of the present invention in conjunction with the accompanying drawings. This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation method and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiment.

[0016] like Figure 1-3 As shown, the grit chamber structure of the float water level gauge self-recording platform of the present invention comprises a grit chamber 2 arranged on the riverbed of a river channel 1, a top cover 3 buckled on the upper opening of the grit chamber 2, and a pollution-proof grille-type water-permeable hole 4 is opened on the top cover 3; the upper part of the inner cavity of the grit chamber 2 is connected with the lower part of the self-recording well 7 of the float water level gauge self-recording platform 6 through a water diversion pipe 5, and a connecting pipe 8 communicating with the river channel 1 is arranged on the side wall of the upper part of the inner cavity of the grit chamber 2 relative to the water diversion pipe 5; a water diversion pipe 8 is arranged at the bottom of the grit chamber 2 to connect the grit chamber 2 with the river channel 1 in a filled state. A rubber bag 9 matching the shape of the inner cavity of the grit tank 2 is provided below, and the inner cavity of the rubber bag 9 is connected to an air pump or a water pump arranged in an instrument room 11 of a float water level gauge self-recording table through a pipe 10; two slide grooves are provided on the side wall of the grit tank 2 at the water inlet of the water diversion pipe 5, and the two slide grooves are parallel to each other and vertically embedded in the pool walls on both sides of the water inlet of the water diversion pipe 5, and a top plate 13 is provided on the upper edge of a water stop plate 12 slidably inserted between the two slide grooves, and the top plate 13 is horizontally extended toward the grit tank 2.

[0017] like Figure 2 , 4As shown, the desilting method of the float water level gauge self-recording platform sedimentation tank of the present invention, during the desilting operation, the air pump or water pump arranged in the float water level gauge self-recording platform instrument room 11 is turned on to fill the rubber bag 9 with air or water to gradually expand the rubber bag 9, and the gradually expanded rubber bag 9 lifts the sediment 14 and accumulated water deposited on the top thereof upward; when the rubber bag 9 expands to the point that its upper surface contacts the top plate 13 of the water stop plate 12, the water stop plate 12 gradually moves upward under the action of the expanded rubber bag 9 until the water inlet of the water diversion pipe 5 is closed; when the water stop plate 12 gradually closes the water inlet of the water diversion pipe 5 from bottom to top, the water stop plate 12 gradually moves upward to the top plate 13 of the water stop plate 12, and ... During the water inlet of the water pipe 5, the silt 14 deposited in the grit chamber 2 flows into the river channel from the connecting pipe 8 under the action of natural water flow; after the water stop plate 12 completely closes the water inlet of the water diversion pipe 5, the silt 14 located on the top of the filled rubber bag 9 is discharged into the river channel from the water permeable hole 4 on the top cover 3 of the grit chamber, completing the dredging operation of the grit chamber; after the dredging operation of the grit chamber is completed, the air or water in the rubber bag 9 is discharged through an air pump or a water pump, so that the rubber bag 9 is stacked on the bottom of the grit chamber, and the water stop plate 12 moves downward along the slide under the action of its own weight to open the water inlet of the water diversion pipe 5.

Claims

1. A float water level gauge self-recording platform sedimentation tank structure, comprising a sedimentation tank arranged on the riverbed in a river channel, and a top cover buckled on the upper opening of the sedimentation tank; characterized in that: The upper part of the inner cavity of the grit chamber is connected with the lower part of the self-recording well of the float water level gauge self-recording platform through a water diversion pipeline, and a connecting pipeline communicating with the river channel is arranged on the side wall of the upper part of the inner cavity of the grit chamber relative to the water diversion pipeline; a rubber bag matching the shape of the inner cavity of the grit chamber in a filled state is arranged at the bottom of the grit chamber, and the inner cavity of the rubber bag is connected with a pump body arranged in the instrument room of the float water level gauge self-recording platform through a pipeline; two slide grooves are arranged on the side wall of the water inlet of the water diversion pipeline in the grit chamber, and the two slide grooves are arranged parallel to each other and vertically on both sides of the water inlet of the water diversion pipeline, and a water stop plate is slidably inserted between the two slide grooves, and a plurality of water permeable holes are opened on the top cover of the grit chamber; The two chutes are parallel to each other and vertically embedded in the pool walls on both sides of the water inlet of the water diversion pipe. A top plate is provided on the upper edge of the water stop plate slidably inserted between the two chutes, and the top plate is horizontally extended toward the sand settling tank; The water permeable holes arranged on the top cover are anti-fouling grille type water permeable holes; and the pump body is an air pump or a water pump.

2. A method for desilting a sedimentation tank of a float water level gauge self-recording platform as claimed in claim 1, characterized in that: During the dredging operation, the air pump or water pump arranged in the instrument room of the float water level gauge recording table is turned on to fill the rubber bag with air or water to make the rubber bag gradually expand, and the gradually expanding rubber bag lifts the sediment and accumulated water deposited on the top thereof upward; when the rubber bag expands to the point that its upper surface contacts the top plate of the water stop plate, the water stop plate gradually moves upward under the action of the expanded rubber bag until the water inlet of the water diversion pipe is closed; in the process of the water stop plate gradually closing the water inlet of the water diversion pipe from bottom to top, the sediment deposited in the grit chamber flows into the river channel from the connecting pipe under the action of natural water flow; after the water stop plate completely closes the water inlet of the water diversion pipe, the sediment located on the top of the filled rubber bag is discharged into the river channel from the water permeable hole on the top cover of the grit chamber, thereby completing the dredging operation of the grit chamber; after the dredging operation of the grit chamber is completed, the air or water in the rubber bag is discharged through the air pump or water pump, so that the rubber bag is stacked on the bottom of the grit chamber.

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