A non-powered rainwater and sewage interception well with multi-angle adjustment to achieve different water flow rates

Abstract

The present invention discloses a non-powered rainwater and sewage interception well with multi-angle adjustment to achieve different water flow rates, including a support frame and a non-powered interception valve rotatably mounted on the support frame, the side of the non-powered interception valve is welded with a side plate, and the side plate is in a vertical angle relationship with the water inlet pipe of the non-powered interception valve, a clamping bolt is vertically fixed on the non-powered interception valve on the support, and the central axis of the clamping bolt is in line with the central axis of the water inlet pipe of the non-powered interception valve, the clamping bolt passes through the support frame and is threadedly connected with a nut A, and the nut A is pressed on the side of the support frame. The non-powered rainwater and sewage interception well has a simple structure, no movable mechanical parts inside, a long service life, strong practicality, and good economic benefits. By adjusting the angle of the non-powered interception valve on the support frame, the flow rate is adjusted to adapt to interception work at different water levels, and the applicability is stronger.

Description

Technical Field

[0001] The invention belongs to the technical field of interception equipment, and in particular relates to an unpowered rainwater and sewage interception well that can be adjusted at multiple angles to achieve different water flow rates. Background Art

[0002] At present, in my country's urban sewage network combined drainage system, the interception technology of the Chinese Engineering Construction Standard CECS91:97 "Design Specification for Sewage Interception Wells in Combined Sewerage Systems" is commonly used to intercept dry flow sewage and initial rainwater into sewage pipes. In the interception system, the interception well must not only allow the intercepted sewage to enter the sewage interception system to achieve the purpose of environmental improvement, but also ensure that rainwater exceeding the street flow rate does not enter the sewage interception system during heavy rains, so as to prevent the actual flow of the downstream sewage interception pipe from exceeding the design flow rate. Therefore, it is necessary to apply the rain and sewage interception well.

[0003] Most of the existing interception wells are divided into three types: weir-type interception wells, trough-type interception wells, and trough-weir combined interception wells. The common point of these interception wells is that they all intercept the upstream sewage volume in a certain proportion and transfer it to the sewage pipe under a certain interception multiple. As the rainfall increases, the water level upstream of the pipeline becomes higher, resulting in a greater increase in flow rate. As a result, the sewage discharge from the interception well also increases proportionally. The greater the amount of water entering the sewage treatment plant, the more the interception well cannot guarantee a relatively constant sewage output, and the drainage volume of the interception well cannot be adjusted. There is a certain lack of applicability, so an updated design is needed. Summary of the invention

[0004] The purpose of the present invention is to provide a non-powered rainwater and sewage interception well with multi-angle adjustment to achieve different water flow rates, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a non-powered rainwater and sewage interception well with multi-angle adjustment to achieve different water flow rates, comprising a support frame and a non-powered interception valve rotatably mounted on the support frame, a side plate welded to the side of the non-powered interception valve, and the side plate is at a vertical angle to the water inlet pipe of the non-powered interception valve, a clamping bolt is vertically fixed on the non-powered interception valve on the support frame, and the central axis of the clamping bolt is colinear with the central axis of the water inlet pipe of the non-powered interception valve, the clamping bolt passes through the support frame and is threadedly connected to a nut A, and the nut A is pressed on the side of the support frame.

[0006] The unpowered shut-off valve is composed of a drum-shaped tank body, a water inlet pipe fixedly arranged on the side wall of the tank body and connected to the inner cavity of the tank body, and an air inlet pipe assembly and a drain pipe respectively arranged at the upper and lower ends of the tank body. When sewage enters the tank body through the water inlet pipe, it swirls along the inner wall of the tank body.

[0007] The support frame is composed of a base and a mounting plate fixedly mounted on the upper end of the base. The mounting plate is provided with two arc guide grooves, and a guide shaft fixedly mounted on the side plate passes through the arc guide groove and is threadedly connected to a nut B on the other side through an external thread.

[0008] Preferably, the water inlet pipe is tangent to the tank body.

[0009] Preferably, the air inlet pipe assembly is composed of a closed gland that is detachably fixedly arranged at the opening of the upper end of the tank body and an air inlet pipe that is fixedly arranged in the middle of the gland and communicates with the interior of the tank body, and the closed gland is made of a transparent material.

[0010] The technical effects and advantages of the present invention are as follows: the multi-angle adjustment realizes unpowered rainwater and sewage interception wells with different water flow rates.

[0011] 1. By adjusting the angle of the unpowered shut-off valve on the support frame, the valve flow rate can be adjusted to meet the needs of shut-off work at different water levels, making it more applicable.

[0012] 2. It has a simple structure, no moving mechanical parts inside, low failure rate, long service life, strong practicality, low manufacturing cost, good economic benefits, and is suitable for promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention.

[0014] Figure 2 It is a structural schematic diagram of the rear view angle of the present invention.

[0015] Figure 3 It is a schematic diagram of the actual operation of the present invention (under normal water level state).

[0016] Figure 4 It is a schematic diagram of the actual operation of the present invention (under the condition of too high water level).

[0017] Figure 5 This is a schematic diagram of the actual operation of the present invention (under a relatively low water level state).

[0018] In the figure: 1, support frame; 11, base; 12, mounting plate;

[0019] 2. Unpowered shutoff valve; 21. Tank body; 22. Water inlet pipe; 23. Air inlet pipe assembly; 24. Drain pipe;

[0020] 231, closed gland; 232, air inlet pipe;

[0021] 3. Side plate; 4. Clamping bolt; 5. Nut A; 6. Arc guide groove; 7. Guide shaft; 8. Nut B. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The present invention provides Figure 1-3 The shown embodiment shows a non-powered rainwater and sewage interception well with multi-angle adjustment to achieve different water flow rates, comprising a support frame 1 and a non-powered interception valve 2 rotatably mounted on the support frame 1, a side plate 3 is welded to the side of the non-powered interception valve 2, and the side plate 3 is at a vertical angle to the water inlet pipe 22 of the non-powered interception valve 2, a clamping bolt 4 is vertically fixed on the non-powered interception valve 2 on the support frame 1, and the central axis of the clamping bolt 4 is colinear with the central axis of the water inlet pipe 22 of the non-powered interception valve 2, the clamping bolt 4 passes through the support frame 1 and is threadedly connected to a nut A5, and the nut A5 is pressed against the side of the support frame 1.

[0024] The unpowered shut-off valve 2 is composed of a drum-shaped tank body 21, a water inlet pipe 22 fixedly arranged on the side wall of the tank body 21 and connected to the inner cavity of the tank body 21, and an air inlet pipe 232 assembly 23 and a drain pipe 24 respectively arranged at the upper and lower ends of the tank body 21. When the sewage enters the tank body 21 through the water inlet pipe 22, it swirls along the inner wall of the tank body 21.

[0025] This unpowered rain and sewage intercepting valve utilizes the principle of fluid dynamics. As the amount of rainfall increases, the water level upstream of the pipeline increases. By utilizing the increase in the upstream water level, that is, the increase in the potential energy of the water flow, after the sewage enters the drum-shaped tank body 21 through the water inlet pipe 22, the sewage swirls along the inner wall of the tank body 21, and the potential energy is immediately converted into kinetic energy, that is, the sewage flow rate increases. When the sewage swirls along the inner wall of the tank body 21, a negative pressure is generated in the inner cavity in the middle of the tank body 21, and the external air enters the tank body 21 through the air inlet pipe 232 component 23 to form an air column. When the speed of the swirling sewage on the inner wall of the tank body 21 increases, the negative pressure in the middle is also increased, and the larger the air column is, the larger the air column is, thereby preventing the increase in flow, thereby achieving the effect of maintaining a stable amount of sewage discharged through the intercepting well as the upstream water level increases and the water level rises.

[0026] When water is flowing, the sum of potential energy + kinetic energy + gravitational energy at any two points remains unchanged, that is: z1+1 / 2v1 2 ρ+ρgh1=z2+1 / 2v2 2 ρ+ρgh2, that is, the total energy is conserved, but the energy between each item can be converted into each other;

[0027] In the above formula:

[0028] Potential energy per unit fluid: z1 z2

[0029] Kinetic energy per unit fluid: 1 / 2v1 2 ρ, 1 / 2v2 2 ρ

[0030] Gravitational energy per unit fluid: ρgh1, ρgh1

[0031] v1 and v2 are the movement speeds at different positions of the upstream and downstream points.

[0032] P is the liquid density.

[0033] g is the acceleration due to gravity.

[0034] It can be concluded that when the upstream liquid level rises, the potential energy Z1 increases, and is converted into kinetic energy after reaching the valve cavity: 1 / 2v1 2 ρ, that is, the speed v2 increases.

[0035] From V2 = √2(z1-z2+ρgh1-ρgh2+1 / 2v1 2 ρ), where it can be seen that the greater the difference z1-z2, the greater the difference ρgh1-ρgh2, the greater the increase in the velocity V2 in the valve cavity, the greater the negative pressure, the greater the negative pressure, the larger the air column in the valve cavity, the larger the air column, the greater the ability to hinder water from passing through the valve cavity, the air column in the valve cavity changes and increases with the increase of the upstream water level z1, that is, with the increase of the upstream water level z1, the water flow through the valve cavity is prevented from increasing, thereby ensuring that the output flow of the intercepting well is maintained at a constant flow rate.

[0036] Therefore, the unpowered shut-off valve 2 is deflected to rotate clockwise on the support frame 1. Figure 4 As shown, at this time, the vertical height difference between the upstream and downstream (i.e., the water inlet and outlet of the unpowered shut-off valve) increases, the difference between z1-z2 and ρgh1-ρgh2 becomes larger, and the speed V2 in the valve cavity increases. As the flow rate of the swirling water flow on the inner wall of the unpowered shut-off valve 2 increases, the negative pressure increases, the air column in the valve cavity increases, and the resistance to the water flow increases, thereby reducing the discharge volume of the unpowered shut-off valve, adapting to the shut-off work when the water level is too high, and avoiding the situation where the discharge volume of the unpowered shut-off valve 2 is too large.

[0037] Similarly, the unpowered shut-off valve 2 is deflected to rotate counterclockwise on the support frame 1. Figure 5 As shown, at this time, the vertical height difference between the upstream and downstream is reduced, the flow rate of the swirling water flow on the inner wall of the unpowered shut-off valve 2 is slower, the negative pressure is smaller, the air column in the valve cavity is smaller, and the resistance to the water flow is also weakened, thereby increasing the discharge capacity of the unpowered shut-off valve 2 and meeting the working needs of the sewage treatment plant to speed up the sewage treatment process.

[0038] The water inlet pipe 22 is tangent to the tank body 21. It is ensured that after the sewage enters the valve cavity through the water inlet pipe 22 of the unpowered shutoff valve 2, it swirls on the inner wall of the unpowered shutoff valve 2 better, forming an air column effect in the valve cavity.

[0039] The air inlet pipe assembly 23 is composed of a closed gland 231 detachably fixedly arranged at the upper opening of the tank body 21 and an air inlet pipe 232 fixedly arranged at the middle of the gland and communicating with the inside of the tank body 21, and the closed gland 231 is made of transparent material. It is convenient to disassemble the air inlet pipe assembly 23 to clean and trim the inside, and the inside of the tank body 21 can be easily observed through the closed gland 231 made of transparent material to observe the working condition.

[0040] The support frame 1 is composed of a base 11 and a mounting plate 12 fixedly mounted on the upper end of the base 11. Two arc-shaped guide grooves 6 are provided on the mounting plate 12, and a guide shaft 7 fixedly mounted on the side plate 3 passes through the arc-shaped guide groove 6 and is threadedly connected to a nut B8 on the other side through an external thread. When the unpowered shut-off valve 2 is rotated, the guide shaft 7 slides along the arc-shaped guide groove 6, and the unpowered shut-off valve 2 is deflected and positioned stably.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A non-powered rainwater and sewage interception well with multi-angle adjustment to achieve different water flow rates, comprising a support frame (1) and a non-powered interception valve (2) rotatably mounted on the support frame (1), characterized in that: A side plate (3) is welded to the side of the non-powered shut-off valve (2), and the side plate (3) and the water inlet pipe (22) of the non-powered shut-off valve (2) are in a vertical angle relationship. A clamping bolt (4) is vertically fixedly arranged on the non-powered shut-off valve (2) on the support frame (1), and the central axis of the clamping bolt (4) is colinear with the central axis of the water inlet pipe (22) of the non-powered shut-off valve (2). The clamping bolt (4) passes through the support frame (1) and is threadedly connected to a nut A (5), and the nut A (5) is pressed on the side of the support frame (1); The unpowered shutoff valve (2) is composed of a drum-shaped tank body (21), a water inlet pipe (22) fixedly arranged on the side wall of the tank body (21) and communicating with the inner cavity of the tank body (21), and an air inlet pipe assembly (23) and a drain pipe (24) respectively arranged at the upper and lower ends of the tank body (21); when sewage enters the tank body (21) through the water inlet pipe (22), it swirls along the inner wall of the tank body (21); The support frame (1) is composed of a base (11) and a mounting plate (12) fixedly mounted on the upper end of the base (11); the mounting plate (12) is provided with two arc-shaped guide grooves (6); and a guide shaft (7) fixedly mounted on the side plate (3) passes through the arc-shaped guide groove (6) and is threadedly connected to a nut B (8) on the other side through an external thread.

2. According to claim 1, a non-powered rainwater and sewage interception well with multi-angle adjustment to achieve different water flow rates is characterized by: The water inlet pipe (22) is tangent to the tank body (21).

3. The unpowered rainwater and sewage interception well with multi-angle adjustment to achieve different water flow rates according to claim 2, characterized in that: The air intake pipe assembly (23) is composed of a closed gland (231) detachably fixedly arranged at the upper end opening of the tank body (21) and an air intake pipe (232) fixedly arranged at the middle of the gland and connected to the interior of the tank body (21), and the closed gland (231) is made of a transparent material.

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