Anti-scouring duckbill valve well

Abstract

The utility model discloses an anti-scour duckbilled valve well which comprises a first nodular cast iron pipe, a valve well body is assembled on the outer wall of the first nodular cast iron pipe, a second nodular cast iron pipe is installed on the other side, away from the first nodular cast iron pipe, of the valve well body, a prefabricated shaft is arranged on the upper surface of the valve well body, and a concrete layer is poured at the bottom of the inner wall of the valve well body. An end flange of the first nodular cast iron pipe is connected with a duckbill valve. According to the device, the valve well is additionally arranged at the duckbill valve, the structure is simple, construction is convenient, the device can be conveniently used for modifying the current duckbill valve and a nodular cast iron pipe, through the arrangement of the valve well, the problems that the duckbill valve is prone to aging acceleration and cracks due to long-term exposure to outdoor sunlight and ozone can be effectively solved, the service life of the duckbill valve is greatly prolonged, and the service life of the duckbill valve is prolonged. And high economic benefits are created.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal engineering, and specifically relates to a duckbill valve well capable of preventing scour. Background Art

[0002] A duckbill valve is a special valve that is usually used to control water flow and water level. It is made of rubber in a duckbill shape, which can prevent water from flowing back and effectively prevent water leakage. It is installed at the inlet of dikes and dams to control water flow and water level, thereby ensuring their safety, preventing excessive water flow during floods, and protecting downstream houses and infrastructure. It not only helps to maintain the stability of water flow and prevent water leakage, but also plays a protective role in emergencies.

[0003] However, the duckbill valve is made of natural rubber, and the rubber duckbill valve products contain volatile substances. Long-term exposure to sunlight and air will shorten its service life. In addition, the duckbill valve will generate a lot of noise during use, which will affect the surrounding environment and personnel. When the pressure flow pipeline passes through the duckbill valve and directly discharges into the river, it is easy to scour the downstream river due to excessive flow rate. Therefore, we propose a duckbill valve well that can prevent scour. Utility Model Content

[0004] The utility model aims to provide a duckbill valve well which can prevent scour, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a scour-proof duckbill valve well, comprising a first ductile iron pipe, the outer wall of the first ductile iron pipe is equipped with a valve well, a second ductile iron pipe is installed on the other side of the valve well away from the first ductile iron pipe, a prefabricated wellbore is provided on the upper surface of the valve well, a concrete layer is cast on the bottom of the inner wall of the valve well, and a duckbill valve is connected to the end flange of the first ductile iron pipe.

[0006] Preferably, the outer wall of the duckbill valve is provided with a semi-ring base, the inner ring wall of the semi-ring base is in contact with the outer wall of the duckbill valve, the lower surface of the semi-ring base is fixedly connected with a steel frame, and the end of the steel frame is fixedly connected to the inner wall of the valve well.

[0007] Preferably, a support block is fixedly connected to the outer wall of the prefabricated wellbore, a wellbore cover is sleeved on the top of the prefabricated wellbore, the corners of the lower surface of the wellbore cover are fitted with the upper surface of the support block, and a strip hole cover is fixedly connected to the center of the upper surface of the wellbore cover.

[0008] Preferably, the inner wall of the valve well is provided with ladders, and the ladders are vertically staggered and arranged in sequence.

[0009] Preferably, the valve well is a concrete structure, and concrete C30 waterproof concrete is used.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the device adds a valve well at the duckbill valve, has a simple structural structure, is easy to construct, and can be conveniently used for the transformation of existing duckbill valves and ductile iron pipes. Through the setting of the valve well, the problem of the duckbill valve being easily accelerated to age and produce cracks due to long-term exposure to outdoor sunlight and ozone can be effectively solved, and the service life of the product is shortened. At the same time, due to the protection and silencing of the duckbill valve by the external valve well, the surface damage of the duckbill valve caused by human damage can be avoided, and the large noise generated during use can be reduced, which affects the surrounding environment and personnel. The anti-scouring duckbill valve well has the effect of killing two birds with one stone, and is a way and means to better utilize the duckbill valve, which greatly increases the service life of the duckbill valve, reduces construction costs, and creates higher economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 for Figure 1 The structural stereogram of the middle strip hole cover;

[0013] Figure 3 for Figure 1 The structural stereogram of the middle half ring base;

[0014] In the figure: 1. first ductile iron pipe; 2. valve well; 3. second ductile iron pipe; 4. concrete layer; 5. prefabricated well shaft; 6. duckbill valve; 7. semi-ring base; 8. steel frame; 9. ladder; 10. strip hole cover; 11. support block; 12. well shaft cover. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] See also Figure 1-3 The utility model provides a duckbill valve well that can prevent erosion, including a first ductile iron pipe 1, the outer wall of the first ductile iron pipe 1 is equipped with a valve well 2, the other side of the valve well 2 away from the first ductile iron pipe 1 is equipped with a second ductile iron pipe 3, the upper surface of the valve well 2 is provided with a prefabricated wellbore 5, the bottom of the inner wall of the valve well 2 is cast with a concrete layer 4, and the end flange of the first ductile iron pipe 1 is connected with a duckbill valve 6.

[0017] A valve well 2 is added at the end of the first ductile iron pipe 1. The pressure flow passes through the duckbill valve 6 to complete the pressure relief in the valve well 2, reduce the outflow velocity, and then discharge through the second ductile iron pipe 3 on the other side of the valve well 2, thereby reducing the scouring of the external river channel. A prefabricated wellbore 5 is arranged on the top of the valve well 2. The interior of the valve well 2 is observed through the prefabricated wellbore 5. The valve well 2 is a concrete structure, and concrete C30 waterproof concrete is adopted with an anti-seepage grade of P8. At the same time, a concrete layer 4 is arranged inside the valve well 2. The strength grade of the concrete layer 4 is C15, which further improves the anti-seepage effect, avoids the duckbill valve 6 from being directly exposed to the sun for a long time, and prolongs its service life. Due to the protection and silencing of the duckbill valve 6 by the external valve well 2, the engineering benefit is maximized.

[0018] A semi-ring base 7 is provided on the outer wall of the duckbill valve 6, and the inner ring wall of the semi-ring base 7 fits with the outer wall of the duckbill valve 6. A steel frame 8 is fixedly connected to the lower surface of the semi-ring base 7, and the end of the steel frame 8 is fixedly connected to the inner wall of the valve well 2. The duckbill valve 6 is lifted by the semi-ring base 7, and the bottom is fixed by the steel frame 8, which provides a force point during installation and makes the installation process more convenient.

[0019] The outer wall of the prefabricated wellbore 5 is fixedly connected with a support block 11, and the top of the prefabricated wellbore 5 is sleeved with a wellbore cover 12. The lower surface corners of the wellbore cover 12 are in contact with the upper surface of the support block 11, and a strip hole cover 10 is fixedly connected to the center of the upper surface of the wellbore cover 12. The wellbore cover 12 is buckled on the outer wall of the prefabricated wellbore 5, so that the prefabricated wellbore 5 can be protected, and the top is ventilated by the strip hole cover 10.

[0020] The inner wall of the valve shaft 2 is provided with a ladder 9, and the ladders 9 are vertically staggered and arranged in sequence. Through the arrangement of the ladders 9, maintenance personnel can enter the interior of the valve shaft 2 through the ladders 9, which is convenient for subsequent maintenance work.

[0021] The valve shaft 2 is a concrete structure, and adopts concrete C30 waterproof concrete.

[0022] 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 duckbill valve well capable of preventing scour, characterized in that: The invention comprises a first ductile iron pipe (1), the outer wall of the first ductile iron pipe (1) is equipped with a valve well (2), a second ductile iron pipe (3) is installed on the other side of the valve well (2) away from the first ductile iron pipe (1), a prefabricated wellbore (5) is arranged on the upper surface of the valve well (2), a concrete layer (4) is cast on the bottom of the inner wall of the valve well (2), and a duckbill valve (6) is connected to the end flange of the first ductile iron pipe (1).

2. The anti-scour duckbill valve well according to claim 1, characterized in that: The outer wall of the duckbill valve (6) is provided with a semi-ring base (7), the inner ring wall of the semi-ring base (7) is in contact with the outer wall of the duckbill valve (6), the lower surface of the semi-ring base (7) is fixedly connected to a steel frame (8), and the end of the steel frame (8) is fixedly connected to the inner wall of the valve well (2).

3. The anti-scour duckbill valve well according to claim 1, characterized in that: The outer wall of the prefabricated shaft (5) is fixedly connected to a support block (11), the top of the prefabricated shaft (5) is sleeved with a shaft cover (12), the lower surface corners of the shaft cover (12) are in contact with the upper surface of the support block (11), and the center of the upper surface of the shaft cover (12) is fixedly connected to a strip hole cover (10).

4. The anti-scour duckbill valve well according to claim 1, characterized in that: The inner wall of the valve well (2) is provided with ladders (9), and the ladders (9) are vertically staggered and arranged in sequence.

5. The anti-scour duckbill valve well according to claim 1, characterized in that: The valve well (2) is a concrete structure, and adopts concrete C30 waterproof concrete.

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