A drainage structure for a sewage collection system

Abstract

The present application relates to sewage collection technical field, disclose a kind of sewage collection system is used to drain structure, including sewage pipe, its first end is inserted into collection tank and outside surface is equipped with support, second end is connected vacuum pipe network, support end is rotatably connected with a lever, lever one end is connected sealing plug, for cooperating with sewage pipe port, the other end is connected float, sewage level change makes that the buoyancy different that float bears, according to the relationship between buoyancy and the vacuum suction force that sealing plug bears, sealing plug is opened or closed by lever drive;The lever both ends are connected float and the sealing plug that cooperates with sewage pipe port, sewage level change in collection tank makes that the buoyancy different that float bears, according to the relationship between buoyancy and the vacuum suction force that sealing plug bears, sealing plug is opened or closed by lever drive, complete sewage emptying process, without any electrical or vacuum drive component, control is simple, cost is low, and work reliability is high, and energy is not wasted.

Description

Technical Field

[0001] This invention relates to the field of wastewater collection technology, and in particular to a discharge structure for a wastewater collection system. Background Technology

[0002] Currently, some wastewater collection systems employ vacuum drainage technology, and one of the key technologies in vacuum drainage is the drain valve technology. Drain valves are installed near the wastewater collection points at the ends of the vacuum drainage network. When the drain valve is closed, the vacuum network maintains a vacuum; when the drain valve is open, wastewater at the collection point is drawn away through it. In the implementation of vacuum drainage in the market, wastewater collection tanks are typically installed at the end collection points. Wastewater first flows into the collection tank by gravity. When the wastewater level in the collection tank reaches a set height, the drain valve opens, drawing the wastewater away. The opening and closing of the drain valve is generally driven by vacuum pressure or electricity. A liquid level detection device is usually installed on the collection tank. When a high liquid level is detected, the vacuum or electric actuator is activated, driving the drain valve to open and begin the drainage process. After a set time, the drain valve closes, stopping the drainage.

[0003] The inventors discovered that the above-mentioned control method for the discharge valve requires the installation of a corresponding vacuum actuator or electric actuator at each sewage collection point. On the one hand, the vacuum actuator or electric actuator has a complex structure, high cost, and high failure rate. On the other hand, the vacuum actuator or electric actuator requires dedicated energy consumption during operation, which is not conducive to energy conservation and environmental protection. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a discharge structure for a sewage collection system. This structure utilizes a lever to connect a float and a sealing plug that mates with the sewage pipe port. Changes in the sewage level within the collection tank result in varying buoyancy on the float. Based on the relationship between buoyancy and the vacuum suction force on the sealing plug, the lever opens or closes the sealing plug, completing the sewage discharge process. This system requires no electrical or vacuum drive components, is simple to control, low in cost, highly reliable, and energy-efficient.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0006] A sewage collection system discharge structure includes a sewage pipe, the first end of which extends into a collection tank and is supported on its outer side, the second end of which is connected to a vacuum network, and the end of the support is rotatably connected to a lever. One end of the lever is connected to a sealing plug for engaging with the port of the sewage pipe, and the other end is connected to a float. Changes in the sewage level cause different buoyancy forces on the float. Based on the relationship between the buoyancy and the vacuum suction force on the sealing plug, the lever drives the sealing plug to open or close.

[0007] As a further implementation, a sewage tank is provided near the bottom inside the collection box, with the first end of the sewage pipe extending into the bottom of the sewage tank and the second end located outside the collection box.

[0008] As a further implementation, the first end face of the sewage pipe is vertically arranged, and when the sealing plug is engaged with the first end port of the sewage pipe, the float is parallel to the first end face of the sewage pipe.

[0009] As a further implementation, the lever is L-shaped, with its two ends connected by a connecting float and a sealing plug, and the turning point is rotatably connected to the end of the bracket.

[0010] As a further implementation, an equipment compartment is provided on top of the sewage tank.

[0011] As a further implementation, the first end port of the sewage pipe is provided with a sealing ring, which is used to cooperate with the sealing plug to achieve a seal.

[0012] As a further implementation, a partition is provided between the float and the first end of the sewage pipe.

[0013] As a further implementation, the partition plate is provided with connecting holes.

[0014] As a further implementation, a support plate is provided between the equipment compartment and the sewage compartment, and a limiting block is provided on the support plate at the position corresponding to the float.

[0015] As a further implementation, the sewage tank sidewall is provided with a sewage outlet for sewage to enter.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. This invention utilizes a lever to connect a float and a sealing plug that mates with the sewage pipe port. Changes in the sewage level in the collection tank cause different buoyancy forces on the float. Based on the relationship between the buoyancy and the vacuum suction force on the sealing plug, the lever drives the sealing plug to open or close, completing the sewage discharge process. No electrical or vacuum drive components are required, making the control simple, cost-effective, highly reliable, and energy-efficient.

[0018] 2. The partition of the present invention is provided with a connecting hole. Because the sewage discharge rate on the right side of the sewage tank is greater than the sewage replenishment rate from the left side of the sewage tank through the connecting hole at the bottom of the partition to the right side, the liquid level on the right side gradually becomes lower than the liquid level on the left side. When the sewage on the right side of the sewage tank is basically sucked clean, the float can still be in a floating state, and the sealing plug remains open, so that the sewage pipe maintains air intake for a period of time to ensure the sewage discharge effect.

[0019] 3. The opening and closing of the sealing plug of this invention does not require any external energy input, which meets the requirements of energy conservation and environmental protection. Attached Figure Description

[0020] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0021] Figure 1 This is a schematic diagram of the overall structure of the discharge structure for the sewage collection system in an embodiment of the present invention;

[0022] Figure 2 This is a partial location diagram of the discharge structure for the sewage collection system in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram illustrating the working principle of the discharge structure used in the sewage collection system in this embodiment of the invention;

[0024] Figure 4 This is a schematic diagram illustrating the working principle of the discharge structure used in the sewage collection system in this embodiment of the invention.

[0025] The diagram exaggerates the spacing or dimensions between parts to show their positions; the diagram is for illustrative purposes only.

[0026] The components are: 1. Collection box, 2. Limiting block, 3. Float, 4. Partition, 5. Connecting hole, 6. Sealing plug, 7. Sealing ring, 8. Drain pipe, 9. Rotating shaft, 10. Lever. Detailed Implementation

[0027] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0028] Example 1

[0029] In a typical embodiment of the present invention, reference is made to Figures 1-4 As shown, a sewage collection system discharge structure includes a collection box 1, which includes an equipment compartment at the top and a sewage compartment at the bottom of the equipment compartment. The equipment compartment and the sewage compartment are separated by a support plate. The side wall of the sewage compartment is provided with a sewage outlet for sewage to enter by gravity.

[0030] like Figure 1 As shown, the first end of the drain pipe 8 extends into the collection box 1, and a bracket is provided on the outer side of the first end of the drain pipe 8. The bracket is horizontally arranged and has a rod-like structure. The second end of the drain pipe 8 extends to the outside of the collection box 1 and is used to connect to the vacuum network to ensure that the drain pipe 8 is in a vacuum state.

[0031] The main body of the sewage pipe 8 is set vertically, and its two ends are bent at 90° so that the first end face and the second end face of the sewage pipe 8 are both set vertically.

[0032] The bracket end is rotatably connected to a lever, which is an L-shaped rod. Its two ends are connected to a float 3 and a sealing plug 6, respectively. The turning point is engaged with the rotating shaft 9 at the end of the bracket to realize the rotatable connection between the lever 10 and the bracket.

[0033] Specifically, one end of the lever is connected to the sealing plug 6, which is used to cooperate with the port of the sewage pipe 8, and the other end is connected to the float 3. The change of sewage water level causes the float 3 to bear different buoyancy. According to the relationship between buoyancy and vacuum suction force borne by the sealing plug 6, the lever drives the sealing plug 6 to open or close.

[0034] In this embodiment, the length of the first segment of the L-shaped lever 10 is adapted to the distance from the end of the bracket to the first end port of the drain pipe 8, ensuring that the sealing plug 6 can seal with the first end port of the drain pipe 8. The first end port of the drain pipe 8 is provided with a sealing ring 7, which is used to cooperate with the sealing plug 6 to achieve a seal.

[0035] Understandably, when the other end of lever 10 is connected to float 3 and sealing plug 6 is engaged with the first end of drain pipe 8, float 3 and the first end face of drain pipe 8 are parallel. A limiting block 2 is provided on the support plate at the position corresponding to float 3, so that when lever 10 rotates and causes float 3 to rise, the limiting block 2 can limit the buoyancy height of float 3 and act as a buffer against impact. A partition 4 is provided between float 3 and the first end of drain pipe 8, and the partition 4 has a connecting hole 5, through which sewage can pass.

[0036] Specific working principle:

[0037] like Figures 1-4 As shown, the upper part of the collection box 1 is the equipment compartment, and the lower part is the sewage compartment. A partition 4 divides the sewage compartment into two parts, A and B. A connecting hole 5 is opened at the bottom of the partition 4, allowing the two parts to communicate. A drain pipe 8 is fixed to the collection box, with its upper interface connected to a vacuum network and its lower interface extending to the bottom of the sewage compartment B. A lever 10 can rotate around a pivot 9. A sealing plug 6 is fixed to one end of the lever 10, forming a seal with the sealing ring 7 at the lower interface end of the drain pipe 8. The other end of the lever 10 is connected to a float 3, which is located in the sewage compartment A.

[0038] The magnitude of F_buoyancy depends on the mass of the pontoon and is a constant; the magnitudes of F_buoyancy and F_support change with the liquid level in the sewage tank; and the magnitude of F_suction changes with the distance between the sealing plug 6 and the sealing ring 7 and the sealing condition, and are therefore variables.

[0039] When the liquid level in the collection tank 1 is low, the float 3 is in a falling state, F_weight ≥ F_buoyancy, F_support ≥ F_suction, at this time we have (F_weight - F_buoyancy) × L1 = (F_support - F_suction) × L2 (ignoring the weight of the lever itself); the sealing plug 6 and the sealing ring 7 form a reliable seal.

[0040] The liquid level in the collection tank 1 continues to rise, but does not reach the critical point of F_support = 0. The float 3 is still in the falling state. F_buoyancy > F_weight. At this time, F_suction > F_support. (F_buoyancy - F_weight) × L1 = (F_suction - F_support) × L2 (ignoring the weight of the lever). The sealing plug 6 and the sealing ring 7 can still form a reliable seal.

[0041] When the liquid level in the collection tank 1 rises to the critical point, the sealing pressure between the sealing plug 6 and the sealing ring 7 decreases to 0, that is, F_support = 0. At this time, (F_buoyancy - F_weight) × L1 = F_suction × L2 (ignoring the weight of the lever).

[0042] If the liquid level in the collection tank 1 continues to rise, F_buoyancy increases, (F_buoyancy - F_weight) × L1 > F_suction × L2, lever 10 loses stability and rotates clockwise around the shaft 9. After the sealing plug 6 and the sealing ring 7 separate slightly, F_suction decreases rapidly, the float rises rapidly, and the sealing plug 6 opens quickly.

[0043] Wastewater in collection tank 1 is drawn into the vacuum network through drain pipe 8. When the wastewater level in collection tank 1 drops below the upper edge of partition 4, the wastewater discharge rate of wastewater section B is greater than the rate at which wastewater from wastewater section A is replenished to section B through the lower connecting hole 5 of partition 4. As a result, the level of wastewater in section B gradually drops below that of wastewater section A. When the wastewater in section B is basically completely drained, float 3 can still remain in a floating state, and sealing plug 6 remains open, allowing drain pipe 8 to maintain air intake for a period of time to ensure the wastewater discharge effect.

[0044] As the liquid level in section A of the sewage tank continues to decrease, the float 3 slowly descends, causing the lever 10 to rotate counterclockwise around the shaft 9. The sealing plug 6 slowly approaches the sealing ring 7. After it gets close to a certain distance, the suction force F increases rapidly, the sealing plug 6 closes quickly, and the drainage ends.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A discharge structure for a sewage collection system, characterized in that, It includes a sewage pipe, the first end of which extends into the collection box and is equipped with a bracket on the outer side. The second end is connected to a vacuum network. The end of the bracket is rotatably connected to a lever. One end of the lever is connected to a sealing plug for cooperating with the sewage pipe port, and the other end is connected to a float. Changes in the sewage water level cause different buoyancy forces on the float. Based on the relationship between the buoyancy force and the vacuum suction force on the sealing plug, the lever drives the sealing plug to open or close. The collection box contains a sewage tank near the bottom, and a partition is provided between the float and the first end of the sewage pipe. The partition has a connecting hole. The partition divides the sewage tank into two parts, A and B. The lower interface of the sewage pipe extends into the bottom of the sewage tank B, and the second end is located outside the collection box. The first end face of the sewage pipe is vertically arranged. When the sealing plug is engaged with the first end face of the sewage pipe, the float is parallel to the first end face of the sewage pipe. The lever is L-shaped, with its two ends connected to the float and the sealing plug, respectively, and the turning point is rotatably connected to the end of the support. The float is located in part A of the sewage tank. When the sewage level in the collection box drops below the upper edge of the partition, the sewage discharge rate of part B of the sewage tank is greater than the rate at which sewage from part A of the sewage tank replenishes part B through the connecting hole at the bottom of the partition.

2. The discharge structure for a sewage collection system according to claim 1, characterized in that, The sewage tank is equipped with an equipment compartment on top.

3. The discharge structure for a sewage collection system according to claim 1, characterized in that, The first end of the sewage pipe is provided with a sealing ring, which is used to cooperate with the sealing plug to achieve a seal.

4. The discharge structure for a sewage collection system according to claim 2, characterized in that, A support plate is provided between the equipment compartment and the sewage compartment, and a limiting block is provided on the support plate at the position corresponding to the float.

5. The discharge structure for a sewage collection system according to claim 4, characterized in that, The sewage tank has a sewage inlet on its side wall for sewage to enter.

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