A type of pressure weir gate

Abstract

This utility model discloses a downward-pressurized weir gate in the field of sewage treatment technology, including a main gate plate, a top beam, side beams, a bottom beam, and a telescopic component. The two side walls of the main gate plate are respectively provided with guide blocks, which are respectively engaged within the two side beams. A sand-flushing assembly is installed within each guide block. The telescopic component is a multi-stage telescopic cylinder installed within the side beams, connected to the guide blocks, with at least one stage used to drive the sand-flushing assembly inside the guide blocks. The main gate plate is slidably connected between the two side beams, and the bottom beam connects the two side beams and forms a rectangular frame with the top beam for the main gate plate to slide. This application, by providing guide blocks with integrated sand-flushing components on the side walls of the main gate plate and using multi-stage telescopic cylinders to drive the sand-flushing assembly to spray water in a directional manner, can actively remove the silt accumulated in the gap between the side beams and the guide blocks, effectively avoiding the sliding jamming and sealing failure problems caused by silt intrusion in traditional weir gates; it is suitable for drainage scenarios with high sand content.

Description

Technical Field

[0001] This utility model relates to a pressure-type weir gate, belonging to the field of sewage treatment technology. Background Technology

[0002] In municipal drainage and sewage treatment systems, bottom-opening weirs, as key water level control devices, have long faced operational reliability issues caused by siltation. Existing technologies often employ open-structure designs for weir guide mechanisms, such as the top-opening weir in Chinese invention patent CN104790354A. This invention discloses a top-opening weir, comprising a fixed frame with a water passage and symmetrically arranged guide grooves within it. A gate plate is embedded within the guide grooves, positioned on the water passage. Symmetrical opening and closing cylinders are located at both ends of the bottom of the fixed frame, with their piston rods connected to the gate plate. The gate plate is raised and lowered by the cylinders, sliding up and down within the guide grooves. It can be raised and lowered as needed and stopped at any height to control different water flow rates or intercept upstream water levels.

[0003] In actual use, due to the movable weir design, silt and debris easily intrude into the guide groove and gaps of moving parts with the water flow, leading to increased sliding resistance of the gate, jamming during opening and closing, and even overload of the hydraulic drive system. Traditional passive dredging methods, such as natural water flow scouring or manual cleaning, have limited effectiveness in low flow conditions or viscous silt environments, making it difficult to effectively remove silt from the guide area and near the sealing surface. This causes repeated accumulation of local sand and triggers related failures, such as accelerated wear and leakage of sealing strips and deformation of hinge pins due to uneven load. This not only increases the frequency and cost of equipment maintenance but also seriously affects drainage efficiency and flood control response speed. Especially in conditions with high sand content and complex water quality, existing weirs lack the ability to actively control the dynamic accumulation of silt. When the gate sinks, the silt at the bottom is squeezed to the side guide rail, forming secondary blockages, further aggravating structural damage and increasing energy consumption. Therefore, how to achieve precise dredging of the guide area, reduce the risk of silt intrusion, and improve the environmental adaptability of the equipment has become a technical bottleneck that urgently needs to be overcome.

[0004] Therefore, a downward-pressure weir gate is proposed. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and to solve the problem that existing weir gates lack the ability to actively control the dynamic accumulation of sediment under working conditions with high sediment content and complex water quality, thereby aggravating structural damage and increasing energy consumption.

[0006] To solve the above-mentioned technical problems, this utility model is implemented using the following technical solution:

[0007] A downward-pressurized weir gate is provided, comprising a main gate panel, a top beam, side beams, a bottom beam, and telescopic components;

[0008] The main door panel is slidably connected between two side beams, and the bottom beam connects the two side beams and forms a rectangular space with the top beam for the main door panel to slide.

[0009] The main door panel has guide blocks on its two side walls, and the two guide blocks are slidably connected to the two side beams respectively;

[0010] The telescopic component includes a first telescopic part and a second telescopic part; the first telescopic part is connected to the guide block and is used to push the guide block to move the main door panel.

[0011] The guide block is equipped with a sand flushing component, and the second telescopic part is connected to the sand flushing component and used to push the sand flushing component.

[0012] One side of the guide block is provided with a nozzle pointing towards the top beam;

[0013] Furthermore, the side of the guide block near the telescopic member is a pushing surface, which is in contact with the first telescopic part. The guide block pushes the pushing surface through the first telescopic part so that the guide block is slidably connected in the side beam.

[0014] Furthermore, the sand flushing assembly includes a pressure plate and a nozzle; the guide block has a water storage cavity inside, the pressure plate is connected to the telescopic member, the pressure plate slides in the water storage cavity through the telescopic member, and the guide block has a water inlet on its side wall near the main door panel;

[0015] The nozzle is installed inside the nozzle orifice.

[0016] Furthermore, a one-way valve is provided inside the water inlet, and the one-way valve allows the water to flow in the direction of entering the guide block.

[0017] Furthermore, the pressure plate is made of flexible rubber material.

[0018] Furthermore, the connection between the pressure plate and the telescopic member includes:

[0019] The farthest telescopic section of the telescopic component is the second telescopic part, which is connected to the pressure plate.

[0020] Furthermore, ear plates are installed between the side beams. The ear plates are rectangular frames, and the main door panel covers the area within the rectangular frame of the ear plates.

[0021] Furthermore, the length of the side beam is twice the length of the main door panel.

[0022] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0023] Compared with existing technologies, this invention features a guide block with an integrated sand-flushing component on the side wall of the main gate panel. Utilizing a multi-stage telescopic cylinder to drive the sand-flushing component, it can actively remove accumulated silt from the gap between the side beam and the guide block, effectively avoiding the sliding jamming and sealing failure problems caused by silt intrusion in traditional weir gates. Simultaneously, the nozzle layout pointing towards the top beam, combined with the dynamic adjustment capability of the multi-stage telescopic drive, can precisely cover key siltation areas near the guide groove and sealing surface during gate lifting and lowering, significantly improving dredging efficiency, reducing the risk of hydraulic system overload caused by silt accumulation, reducing the frequency of manual dredging, and extending equipment lifespan. It is suitable for drainage scenarios with high sand content and complex operating conditions. Attached Figure Description

[0024] Figure 1 The diagram shown is a schematic of the overall structure of the downward-pressing weir gate provided by this utility model;

[0025] Figure 2 The diagram shown is a schematic of the internal structure of the crossbeam of the downward-pressing weir gate provided by this utility model.

[0026] Figure 3 The diagram shown is a schematic diagram of the sand flushing component provided by this utility model;

[0027] Figure 4 The figure shown is a cross-sectional view of the pressure-type weir gate provided by this utility model.

[0028] Figure label:

[0029] 1. Main door panel; 11. Guide block; 111. Nozzle; 112. Water inlet; 113. One-way valve; 114. Pushing surface; 12. Sand flushing assembly; 121. Pressure plate; 122. Nozzle; 13. Water storage chamber; 2. Top beam; 3. Side beam; 4. Bottom beam; 5. Telescopic component; 51. First telescopic part; 52. Second telescopic part; 6. Ear plate. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0032] like Figure 1 As shown, a downward-pressurized weir gate is provided, including a main gate plate 1, a top beam 2, a side beam 3, a bottom beam 4, and a telescopic component 5;

[0033] like Figure 2 and Figure 3 As shown, the main gate panel 1 is slidably connected between two side beams 3, and the bottom beam 4 connects the two side beams 3 and forms a rectangular space with the top beam 2 for the main gate panel 1 to slide; the two side walls of the main gate panel 1 are respectively provided with guide blocks 11, and the two guide blocks 11 are slidably connected in the two side beams 3; the rectangular space is used to achieve the interception of water by the weir gate through the sliding of the main gate panel 1.

[0034] The telescopic component 5 includes a first telescopic part 51 and a second telescopic part 52; the first telescopic part 51 is connected to the guide block 11 and is used to push the guide block 11 to move the main door panel 1; the telescopic component is a multi-stage telescopic cylinder. In this embodiment, it is provided with two stages of telescopic movement, wherein the outermost stage is the second telescopic part 52, and the remaining part is the first telescopic part 51. The second telescopic part 52 is connected to the pressure plate 121 and is used to push the sand flushing component 12 inside the guide block 11.

[0035] The side of the guide block 11 near the telescopic member 5 is the pushing surface 114. The pushing surface 114 is in contact with the first telescopic part 51. The guide block 11 pushes the pushing surface 114 through the first telescopic part 51 so that the guide block 11 is slidably connected to the side beam (3). In this embodiment, the pushing surface 114 is set as the side of the main door panel 1 at the bottom of the working state, so that the first telescopic part 51 can push the guide block 11 and drive the main door panel 1 to slide.

[0036] The guide block 11 is provided with a sand flushing component 12, the telescopic component 5 is a multi-stage telescopic cylinder and is installed in the side beam 3, the telescopic component 5 is connected to the guide block 11 and at least one stage is used to drive the sand flushing component 12 inside the guide block 11.

[0037] The guide block 11 has a nozzle 111 on one side pointing towards the top beam 2;

[0038] The sand flushing assembly 12 includes a pressure plate 121 and a nozzle 122; a water storage cavity 13 is provided inside the guide block 11; the pressure plate 121 is connected to the telescopic member 5; the pressure plate 121 slides in the water storage cavity 13 through the telescopic member 5; a water inlet 112 is provided on the side wall of the guide block 11 near the main door panel 1; and the nozzle 122 is installed in the nozzle 111.

[0039] like Figure 4As shown, the farthest telescopic stage of the telescopic member 5 is connected to the pressure plate 121; the pressure plate 121 is used to apply pressure to the water storage chamber 13 through the outermost telescopic stage of the telescopic member 5; a one-way valve 113 is provided in the inlet 112, and the one-way valve 113 allows the water to flow in the direction of the guide block 11; due to the one-way valve 113, when the water moves vertically upward on the pressure plate 121, the inlet 112 is below the pressure plate 121. As the pressure plate 121 moves vertically upward, the pressure in the water storage chamber 13 at the lower end of the pressure plate 121 decreases, thereby drawing in external water; it should be noted that since the external water is municipal sewage, and in order to alleviate the water level pressure under heavy rain conditions, there are relatively few impurities in the water. Therefore, the water being pumped is mostly water with low sand content, and even with a small amount of sand and gravel, it does not affect the use. It can achieve self-purification by relying on the water flow through multiple pumping.

[0040] It should be mentioned that the one-way valve is set in a single direction to ensure the normal operation of the sand flushing assembly and to prevent water from failing to rise above the pressure plate due to the pressure of the pressure plate.

[0041] Specifically, when the pressure plate 121 moves vertically upward, if there is no water above the pressure plate 121, it needs to be repeatedly extended and retracted. According to actual use, two retractions are sufficient to fill the area below the pressure plate 121 with water. When the area below is filled, the pressure plate 121 continues to press down. Due to the one-way valve 113 and the material of the pressure plate 121 itself (which is flexible rubber), it will deform, causing the water below the pressure plate 121 to rise to the top of the pressure plate 121. This allows the pressure plate 121 to carry the water upward as it rises until it contacts the nozzle 111. At this time, the telescopic member 5 continues to squeeze, and the water passes through the nozzle 122 and the nozzle 111. Combined with the squeezing force provided by the telescopic member 5, the water will be sprayed to the sliding position of the main door panel 1, thereby flushing away some of the mud and sand remaining in the rectangular space.

[0042] The pressure plate 121 is made of flexible rubber material. In this embodiment, the material of the pressure plate 121 is preferably flexible rubber. Any wear-resistant material can be used as a substitute, provided that flexible deformation can be achieved.

[0043] Ear plates 6 are also installed between the side beams 3. The ear plates 6 are rectangular frames, and the main gate plate 1 covers the area within the rectangular frame of the ear plates 6. The length of the side beams 3 is twice the length of the main gate plate 1. The ear plates 6 limit the maximum cross-section of the water passing through the weir gate and reinforce the overall structure of the weir gate. On the other hand, the ear plates 6 provide space for fixing and connecting during the installation process, thereby eliminating the need to drill holes in the main gate plate 1 and other structures.

[0044] During installation, the side beam 3 is longer than the main door panel 1, so the side beam 3 needs a deeper foundation to provide sliding space for the main door panel 1. This is also to ensure that the main door panel 1 can completely seal the cross-section of the ear plate 6, while also being able to sink completely. In the event of heavy rain or other conditions, the main door panel 1 can sink to maximize drainage. Example

[0045] Based on Embodiment 1, the downward pressure weir gate includes a main gate panel, a top beam, a bottom beam, side beams, and guide blocks. Guide blocks are respectively provided on both sides of the main gate panel. The guide blocks are slidably installed in the guide groove between the two side beams to guide the main gate panel to move up and down in the vertical direction.

[0046] The difference from Embodiment 1 is that the telescopic component set in this embodiment is a multi-stage telescopic structure, such as a three-stage or four-stage telescopic cylinder. Only the outermost stage (i.e. the stage furthest from the fixed end) is directly connected to the sand-flushing component in the guide block. The other telescopic stages are only used to achieve the required stroke expansion and drive force transmission, and do not need to be mechanically connected to the sand-flushing component.

[0047] Specifically, the guide block has a water storage chamber inside, and its upper end face has a nozzle facing the top beam of the weir gate, with a nozzle installed inside the nozzle; the side wall of the guide block has a water inlet, and a one-way valve is installed on the water inlet to control the water flow to only enter the water storage chamber and not backflow, so as to ensure that the water flow pressure is not disturbed during sand flushing; a pressure plate is installed in the water storage chamber, and the pressure plate can move back and forth in the vertical direction under the push of the telescopic component, thereby realizing the squeezing or suction of the water in the water storage chamber;

[0048] The outermost telescopic section is connected to the pressure plate, which is used to directly push the pressure plate up and down to complete the filling and spraying of water in the water storage chamber;

[0049] The remaining telescopic sections of the multi-stage telescopic structure are sequentially nested between the fixed end and the guide block, allowing the sand flushing component to cover key parts on the sliding path of the main door panel, forming an effective dredging path.

[0050] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A drop gate, characterized in that It includes a main door panel (1), a top beam (2), side beams (3), a bottom beam (4), and a telescopic component (5); the main door panel (1) is slidably connected between two side beams (3), and the bottom beam (4) connects the two side beams (3) and forms a rectangular space with the top beam (2) for the main door panel (1) to slide; The main door panel (1) has guide blocks (11) on its two side walls, and the two guide blocks (11) are slidably connected to the two side beams (3); The telescopic component (5) includes a first telescopic part (51) and a second telescopic part (52); the first telescopic part (51) is connected to the guide block (11) and is used to push the guide block (11) to drive the main door panel (1) to move; The guide block (11) is provided with a sand flushing component (12), and the second telescopic part (52) is connected to the sand flushing component (12) and is used to push the sand flushing component (12). The guide block (11) has a nozzle (111) on one side pointing towards the top beam (2).

2. The downward-pressing weir gate according to claim 1, characterized in that, The side of the guide block (11) near the telescopic member (5) is the pushing surface (114). The pushing surface (114) is in contact with the first telescopic part (51). The guide block (11) pushes the pushing surface (114) through the first telescopic part (51) so that the guide block (11) is slidably connected in the side beam (3).

3. The downward-pressing weir gate according to claim 1, characterized in that, The sand flushing assembly (12) includes a pressure plate (121) and a nozzle (122); the guide block (11) has a water storage cavity (13) inside, the pressure plate (121) is connected to the telescopic member (5), the pressure plate (121) slides in the water storage cavity (13) through the telescopic member (5), and the guide block (11) has a water inlet (112) on the side wall near the main door panel (1). The nozzle (122) is installed inside the nozzle (111).

4. The downward-pressing weir gate according to claim 3, characterized in that, The inlet (112) is equipped with a one-way valve (113), and the one-way valve (113) allows the water to flow in the direction of the guide block (11).

5. The downward-pressing weir gate according to claim 3, characterized in that, The pressure plate (121) is made of flexible rubber material.

6. The downward-pressing weir gate according to claim 3, characterized in that, The connection between the pressure plate (121) and the telescopic member (5) includes: The farthest telescopic section of the telescopic member (5) is the second telescopic part (52), which is connected to the pressure plate (121).

7. The downward-pressing weir gate according to claim 1, characterized in that, An ear plate (6) is also installed between the side beams (3). The ear plate (6) is a rectangular frame, and the main door panel (1) covers the area inside the rectangular frame of the ear plate (6).

8. The downward-pressing weir gate according to claim 1, characterized in that, The length of the side beam (3) is twice the length of the main door panel (1).

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