Negative pressure well based on floating ball control

Abstract

The utility model provides a negative pressure well based on floating ball control, which comprises a well body, a water inlet pipeline and a water outlet pipeline, a public blow-off pipe provides negative pressure for the water outlet pipeline, a floating ball assembly, an opening and closing assembly and a pneumatic valve are further arranged in the well body, the pneumatic valve is arranged in the water outlet pipe, and a control pipeline is arranged between the pneumatic valve and the opening and closing assembly. The floating ball assembly is arranged at the bottom of the opening and closing assembly, a first negative pressure pipeline is further arranged between the opening and closing assembly and the water inlet pipeline, the floating ball assembly is used for controlling connection and disconnection between the first negative pressure pipeline and the control pipeline, and the communication relation between the first negative pressure pipeline and the control pipeline is cut off or opened through cooperation of the floating ball assembly and the opening and closing assembly. Therefore, the sewage can be automatically discharged without a circuit.

Description

Technical Field

[0001] This utility model relates to the field of drainage, and in particular, to a negative pressure well based on float control. Background Technology

[0002] In rural sewage renovation projects, burying public sewage pipes is a good solution to prevent sewage from flowing into the soil and causing pollution. This allows each household's sewage to be sent to a sewage treatment plant for treatment. The water flow in the public sewage pipe is achieved by the pumps of the sewage plant. However, if air enters the public sewage pipe, it will cause the pumps to run idle and waste energy. Therefore, installing a negative pressure sewage well in each household can relatively reduce the amount of air entering the public sewage pipe.

[0003] Currently, Chinese patent CN211774432U discloses a sewage negative pressure collection well, including a well body. The well body is equipped with a negative pressure suction pipe, a connecting pipe, a negative pressure drainage pipe and a vacuum valve. The negative pressure suction pipe is connected to the negative pressure drainage pipe through the connecting pipe, and the connecting pipe is connected to the vacuum valve. A liquid level detection pipe is provided inside the negative pressure suction pipe.

[0004] The aforementioned patent has shortcomings. The negative pressure well mainly controls the connection between the public sewage pipe and the negative pressure well through a liquid level detection pipe and a vacuum valve. It requires connecting the liquid level detection pipe and the vacuum valve to the action controller control board to achieve circuit control. However, in rural areas, it is difficult to control by circuit, and it requires pulling and modifying the electrical wiring circuit. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a negative pressure well based on float control, which can automatically identify the sewage situation in the well and automatically discharge it without the need for circuitry.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a negative pressure well based on float control, including a well body, an inlet pipe, and an outlet pipe. The inlet pipe and the outlet pipe are both connected to the inside of the well body. The outlet pipe is connected to a public sewage pipe, which provides negative pressure to the outlet pipe. The well body is also equipped with a float assembly, an opening and closing assembly, and a pneumatic valve. The pneumatic valve is located inside the outlet pipe. A control pipeline is provided between the pneumatic valve and the opening and closing assembly. The float assembly is located at the bottom of the opening and closing assembly. A negative pressure pipeline is also provided between the opening and closing assembly and the inlet pipe. The float assembly is used to control the opening and closing of the negative pressure pipeline and the control pipeline, thereby controlling the opening and closing of the pneumatic valve.

[0007] By using the above-mentioned technical means, the connection between the negative pressure pipeline and the control pipeline is cut off or opened by the cooperation of the float assembly and the opening and closing assembly, thereby controlling the pneumatic valve to open or close, and determining whether the well body is to be discharged. Sewage can be discharged automatically without the need for electrical circuits.

[0008] Preferably, the float assembly includes a float body, a limiting rod, and a piston head. The float body is slidably disposed on the limiting rod, and the piston head is fixedly disposed on the side of the limiting rod away from the float body. The piston head is used to cooperate with the opening and closing assembly to close or open the pneumatic valve.

[0009] Through the above-mentioned technical means, by cooperating with the float body and the limiting rod, and by setting a piston head at the end of the limiting rod, the pneumatic valve is controlled by the up and down movement of the float body in conjunction with the opening and closing components.

[0010] Preferably, the limiting rod is provided with an upper limiting plate and a lower limiting plate, the float body slides between the upper limiting plate and the lower limiting plate, and the float body cooperates with the upper limiting plate to control the piston head to move within the opening and closing assembly.

[0011] By using the above-mentioned technical means, by setting upper and lower limit plates, the float can only move the limit rod upward after it is suspended to a certain height. During the drainage process, the float also needs to move down to the lower limit plate before it can pull the limit rod to move.

[0012] Preferably, the opening and closing assembly includes a negative pressure column, a negative pressure chamber is formed inside the negative pressure column, the piston head is slidably disposed in the negative pressure chamber, one end of the negative pressure column is connected to the control pipeline, and the other end is connected to the negative pressure pipeline. After the piston head slides upward a certain distance, it cuts off the connection between the control pipeline and the negative pressure pipeline.

[0013] Through the aforementioned technical means, by cooperating with the piston head and the negative pressure chamber, when the piston head moves to the upper end of the control pipeline, the pressure in the control pipeline rises, thereby controlling the pneumatic valve to open.

[0014] Preferably, the bottom of the negative pressure column is also provided with an installation ring, and the bottom of the installation ring is connected to a cover plate by screws. The limiting rod passes through the cover plate and forms an air gap with the cover plate. The limiting rod is also provided with a positioning installation plate, which is slidably disposed in the negative pressure column and has an air hole.

[0015] Through the above-mentioned technical means, and through the cooperation between the mounting ring, cover plate and mounting plate, the limiting rod and piston head will not be separated from the negative pressure chamber, and gas can be allowed to enter the control pipeline by forming an air gap.

[0016] Preferably, the water outlet pipe includes a second negative pressure pipe and a pumping pipe, the pneumatic valve is disposed between the second negative pressure pipe and the pumping pipe, and the second negative pressure pipe is connected to the first negative pressure pipe.

[0017] Through the above-mentioned technical means, both negative pressure pipeline 2 and negative pressure pipeline 1 are in a negative pressure state, and the connection between the water pumping pipe and negative pressure pipeline 2 is cut off by a pneumatic valve.

[0018] Preferably, the pneumatic valve includes a valve body and a valve core. The valve body has an inlet and an outlet on both sides, and a pneumatic control chamber on the top side. The valve core has a piston disc and a spring on the top. The spring is located at the bottom of the piston disc and drives the valve core to lock. The piston disc slides in the pneumatic control chamber, and the pneumatic control chamber is connected to the control pipeline.

[0019] By using the above-mentioned technical means, the pneumatic control chamber is connected to the control pipeline. When the pressure in the control pipeline is restored and the outlet is under negative pressure, the valve core moves and the pneumatic valve is opened. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0021] Figure 2 This is a schematic diagram of the opening and closing components;

[0022] Figure 3 This is a schematic diagram of the pneumatic valve.

[0023] Reference numerals in the attached diagram: 1. Well body; 2. Inlet pipe; 3. Outlet pipe; 4. Public sewage pipe; 5. Float assembly; 6. Opening and closing assembly; 7. Pneumatic valve; 8. Control pipe; 9. Negative pressure pipe one; 10. Float body; 11. Limiting rod; 12. Piston head; 13. Upper limit plate; 14. Lower limit plate; 15. Negative pressure column; 16. Negative pressure chamber; 17. Mounting ring; 18. Cover plate; 19. Air gap; 20. Positioning mounting plate; 21. Air hole; 22. Negative pressure pipe two; 23. Pumping pipe; 24. Valve body; 25. Valve core; 26. Inlet; 27. Outlet; 28. Valve seat; 29. ​​Pneumatic control chamber; 30. Piston disc; 31. Spring. Detailed Implementation

[0024] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered.

[0025] A negative pressure well based on float control includes a well body, an inlet pipe, and an outlet pipe. Both the inlet and outlet pipes are connected to the inside of the well body. The inlet pipe is connected to a domestic sewage pipe, and the outlet pipe is connected to a public sewage pipe, which provides negative pressure to the outlet pipe. The well body also includes a float assembly, an opening and closing assembly, and a pneumatic valve. The pneumatic valve is located inside the outlet pipe, and a control pipe connects the pneumatic valve to the opening and closing assembly. The float assembly is located at the bottom of the opening and closing assembly, and a negative pressure pipe connects the opening and closing assembly to the inlet pipe. The float assembly is used to control the negative pressure. The connection between pipeline 1 and the control pipeline controls the opening and closing of the pneumatic valve. When the water level in the well is low, the pneumatic valve closes. At this time, both the outlet pipeline and the negative pressure pipeline 1 are under negative pressure. The control pipeline is connected to the negative pressure pipeline 1, thus making it also under negative pressure. By adjusting the position of the float assembly and cooperating with the opening and closing assembly, the connection between the negative pressure pipeline 1 and the control pipeline is cut off or opened, thereby releasing the negative pressure state in the control pipeline and controlling the pneumatic valve to open or close. The position of the float assembly determines whether the well is drained, thus automatically draining sewage without the need for an electrical circuit.

[0026] The float assembly includes a float body, a limiting rod, and a piston head. The float body is slidably mounted on the limiting rod, and the piston head is fixedly mounted on the side of the limiting rod away from the float body. The piston head is used to cooperate with the opening and closing assembly to close or open the pneumatic valve. The limiting rod is provided with an upper limit plate and a lower limit plate. The float body slides between the upper limit plate and the lower limit plate. After the float body moves upward due to the water level, it abuts against the upper limit plate and drives the limiting rod to move upward, thereby controlling the movement of the piston head within the opening and closing assembly.

[0027] The opening and closing assembly includes a negative pressure column with a negative pressure chamber inside. A piston head is slidably positioned within the negative pressure chamber. One end of the negative pressure column is connected to a control pipeline, and the other end is connected to a negative pressure pipeline. The control pipeline is positioned lower than the negative pressure pipeline. When the piston head slides upward a certain distance, the connection between the control pipeline and the negative pressure pipeline is cut off. A mounting ring is also provided at the bottom of the negative pressure column. A cover plate is connected to the bottom of the mounting ring by screws. A limiting rod passes through the cover plate and forms an air gap with the cover plate. A positioning mounting plate is also provided on the limiting rod. The positioning mounting plate is slidably positioned within the negative pressure column and has air holes. Through the cooperation between the mounting ring, the cover plate, and the mounting plate, the limiting rod and the piston head will not detach from the negative pressure chamber. The air gap allows gas to enter the control pipeline.

[0028] The water outlet pipe includes a second negative pressure pipe and a pumping pipe. A pneumatic valve is installed between the second negative pressure pipe and the pumping pipe. The second negative pressure pipe is connected to the first negative pressure pipe.

[0029] The pneumatic valve includes a valve body and a valve core. The valve body has an inlet and an outlet on both sides, and a valve seat that mates with the valve core in the middle. A pneumatic control chamber is also provided on the top side. A piston disc and a spring are provided on the top of the valve core. The spring is located at the bottom of the piston disc and drives the valve core to press against the valve seat and lock it in place. The piston disc slides in the pneumatic control chamber, which is connected to the control pipeline.

[0030] The following is the drainage process of a negative pressure well:

[0031] When the sewage in the negative pressure well is low, negative pressure pipeline 2, negative pressure pipeline 1, and the control pipeline are all under negative pressure. At this time, the spring at the bottom of the piston disc presses against the piston disc and closes the pneumatic valve. When the sewage level rises, it drives the float body to rise. When the float body touches the upper limit plate, it continues to move upward. The limit rod moves the piston head upward. When the piston head moves to the position between negative pressure pipeline 1 and the control pipeline, the connection between the control pipeline and negative pressure pipeline 1 is cut off, and the control pipeline is connected to the atmosphere. When the negative pressure in the control pipeline disappears, a pressure difference appears between negative pressure pipeline 2 and the control pipeline, and the pneumatic valve is opened through the negative pressure. At this time, sewage pumping begins. The float body moves downward along the limit rod and with the water level. When the float body touches the lower limit plate, the water level continues to drop. The float body can then move the limit rod and piston head downward to reset by its weight. At this time, the control pipeline and negative pressure pipeline 1 are reconnected, and the pressure in the control pipeline gradually decreases, causing the pneumatic valve to close again.

[0032] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A negative pressure well based on float control, comprising a well body, an inlet pipe, and an outlet pipe, wherein both the inlet and outlet pipes are connected to the interior of the well body, and the outlet pipe is connected to a common sewage pipe, wherein the common sewage pipe provides negative pressure to the outlet pipe, characterized in that: The well body is also equipped with a float assembly, an opening and closing assembly, and a pneumatic valve. The pneumatic valve is located inside the outlet pipe, and a control pipeline is provided between the pneumatic valve and the opening and closing assembly. The float assembly is located at the bottom of the opening and closing assembly, and a negative pressure pipeline is also provided between the opening and closing assembly and the inlet pipe. The float assembly is used to control the opening and closing between the negative pressure pipeline and the control pipeline, thereby controlling the opening and closing of the pneumatic valve.

2. A negative pressure well based on float control according to claim 1, characterized in that: The float assembly includes a float body, a limiting rod, and a piston head. The float body is slidably mounted on the limiting rod, and the piston head is fixedly mounted on the side of the limiting rod away from the float body. The piston head is used to cooperate with the opening and closing assembly to close or open the pneumatic valve.

3. A negative pressure well based on float control according to claim 2, characterized in that: The limiting rod is provided with an upper limiting plate and a lower limiting plate. The float body slides between the upper limiting plate and the lower limiting plate. The float body cooperates with the upper limiting plate and controls the piston head to move within the opening and closing assembly.

4. A negative pressure well based on float control according to claim 2, characterized in that: The opening and closing assembly includes a negative pressure column with a negative pressure chamber inside. The piston head is slidably disposed in the negative pressure chamber. One end of the negative pressure column is connected to the control pipeline, and the other end is connected to the negative pressure pipeline. After the piston head slides upward a certain distance, it cuts off the connection between the control pipeline and the negative pressure pipeline.

5. A negative pressure well based on float control according to claim 4, characterized in that: The bottom of the negative pressure column is also provided with an installation ring, and the bottom of the installation ring is connected to a cover plate by screws. The limiting rod passes through the cover plate and forms an air gap with the cover plate. The limiting rod is also provided with a positioning installation plate, which is slidably disposed in the negative pressure column and has an air hole.

6. A negative pressure well based on float control according to claim 1, characterized in that: The water outlet pipe includes a second negative pressure pipe and a pumping pipe. The pneumatic valve is installed between the second negative pressure pipe and the pumping pipe. The second negative pressure pipe is connected to the first negative pressure pipe.

7. A negative pressure well based on float control according to claim 1, characterized in that: The pneumatic valve includes a valve body and a valve core. The valve body has an inlet and an outlet on both sides, and a pneumatic control chamber on the top side. The valve core has a piston disc and a spring on top. The spring is located at the bottom of the piston disc and drives the valve core to lock. The piston disc slides in the pneumatic control chamber, which is connected to the control pipeline.

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