Dirty oil and sewage recovery device
By introducing an air capsule and liquid level sensor system into the sludge and oily wastewater recovery device, the problem of easy damage to the pump mechanical seal was solved, and stable operation and cost optimization of the equipment were achieved.
Patent Information
- Application Number
- CN202520177417.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-05
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-02-05
AI Technical Summary
The mechanical seals of existing oily and wastewater recovery devices are prone to damage, mainly due to the drying out of the mechanical seals caused by intermittent operation, which affects equipment reliability and maintenance costs.
The system employs an air capsule and liquid level sensor control system. By sensing changes in liquid level through a liquid level gauge, it automatically adjusts the volume of the air capsule to maintain a stable liquid level, reducing the number of times the self-priming pump stops and minimizing wear on the mechanical seal.
This effectively reduces the number of times the self-priming pump stops, lowers the chance of mechanical seal damage, and reduces equipment investment costs.
Smart Images
Figure CN223879496U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sewage recovery technical field especially relates to a kind of dirty oil, sewage recovery device. BACKGROUND
[0002] The dirty oil sewage recovery device currently used is mostly buried in the ground, and dirty oil sewage flows into the recovery tank through the pipeline, and the dirty oil sewage is discharged to the sewage treatment station by the water pump. Since the amount of dirty oil sewage is uncertain, the water pump is controlled to start by the liquid level meter in the recovery tank, that is, the water pump of the dirty oil sewage recovery device is intermittently operated. The mechanical seal of the water pump has the following shortcomings: the water (oil) sealing membrane between the static ring and the dynamic ring is prone to dryness during intermittent operation. When the water pump is started again, the mechanical seal is prone to leakage and damage. SUMMARY
[0003] To solve the problem of easy damage of the water pump seal of the current dirty oil sewage recovery device, the utility model provides a kind of dirty oil, sewage recovery device.
[0004] The technical scheme provided by the utility model is: a kind of dirty oil, sewage recovery device, including recovery tank, recovery tank is buried below ground, and the tank wall of recovery tank is connected with liquid inlet pipe, and the top of recovery tank is connected with cover plate by bolt, and self-priming pump is installed on cover plate, and the liquid suction pipe of self-priming pump extends into recovery tank, and the liquid discharge pipe of self-priming pump is connected to sewage treatment station.
[0005] Air capsule is arranged in the recovery tank, and the air capsule is bonded to the bottom of the recovery tank. A gas pump is installed on the cover plate, and the outlet pipeline of the gas pump is connected with an electric three-way valve. The other two outlets of the electric three-way valve are connected with the air capsule and the exhaust port respectively.
[0006] A liquid level meter is installed on the cover plate. The liquid level meter is a top-mounted magnetic flap floating ball liquid level sensor, and the floating ball of the magnetic flap floating ball liquid level sensor extends into the recovery tank.
[0007] A one-way valve is arranged on the liquid discharge pipe.
[0008] The utility model has the advantages that: the liquid level change in the recovery tank is sensed by the liquid level meter. When the liquid level drops, the air capsule is inflated. When the liquid level rises, the air capsule is exhausted, so that the liquid level is maintained within a certain range, that is, the self-priming pump is in operation, the number of shutdowns of the self-priming pump is reduced, the probability of mechanical seal damage is reduced, and a small-sized self-priming pump can be selected to reduce equipment investment. BRIEF DESCRIPTION OF DRAWINGS
[0009] ATTACH Figure 1 It is the structure diagram of the utility model.
[0010] In the diagram, 1-recovery tank, 2-cover plate, 3-self-priming pump, 31-liquid suction pipe, 32-liquid discharge pipe, 4-liquid inlet pipe, 5-air capsule, 6-air pump, 7-electric three-way valve, 8-liquid level gauge, 9-one-way valve. Detailed Implementation
[0011] like Figure 1 As shown, a waste oil and wastewater recycling device includes a recycling tank 1, which is buried underground. An inlet pipe 4 is connected to the tank wall of the recycling tank 1. A cover plate 2 is bolted to the top of the recycling tank 1. A self-priming pump 3 is installed on the cover plate 2. The suction pipe 31 of the self-priming pump 3 extends into the recycling tank 1, and the discharge pipe 32 of the self-priming pump 3 is connected to a wastewater treatment station.
[0012] An air capsule 5 is installed inside the recycling tank 1. The air capsule 5 is attached to the bottom of the recycling tank 1. An air pump 6 is installed on the cover plate 2. The outlet pipe of the air pump 6 is connected to an electric three-way valve 7. The other two outlets of the electric three-way valve 7 are connected to the air capsule 5 and the vent, respectively.
[0013] A level gauge 8 is installed on the cover plate 2. The level gauge 8 is a top-mounted magnetic float level sensor. The float of the magnetic float level sensor extends into the recovery tank 1.
[0014] The volume of the air capsule 5 can be controlled by the air pump 6 and the electric three-way valve 7. The electric three-way valve 7 connects the air pump 6 to the air capsule 5, so that the air pump 6 can fill the air capsule 5 with compressed air to increase its volume. The electric three-way valve 7 connects the air capsule 5 to the vent, so that the air capsule 5 can be vented to reduce its volume.
[0015] The liquid level gauge 8 senses changes in the liquid level in the recovery tank. When the liquid level drops, air is pumped into the air capsule 5. When the liquid level rises, air is released from the air capsule 5, keeping the liquid level within a certain range. This means that the self-priming pump 3 is always in operation, reducing the number of times the self-priming pump 3 stops and lowering the chance of mechanical seal damage. At the same time, a smaller self-priming pump 3 can be selected to reduce equipment investment.
[0016] A one-way valve 9 is installed on the drain pipe 32.
Claims
1. A device for recovering oil and water from a contaminated oil and water mixture, comprising a recovery tank (1), characterized in that: The recovery tank (1) is buried under the ground, a liquid inlet pipe (4) is connected to the tank wall of the recovery tank (1), a cover plate (2) is bolted to the top of the recovery tank (1), a self-priming pump (3) is installed on the cover plate (2), a liquid suction pipe (31) of the self-priming pump (3) extends into the recovery tank (1), and a liquid discharge pipe (32) of the self-priming pump (3) is connected to a sewage treatment station; An air capsule (5) is arranged in the recovery tank (1), the air capsule (5) is bonded to the bottom of the recovery tank (1), an air pump (6) is installed on the cover plate (2), an outlet pipeline of the air pump (6) is connected to an electric three-way valve (7), and the other two outlets of the electric three-way valve (7) are respectively connected to the air capsule (5) and a vent.
2. A device for recovering oil and water from a contaminated oil and water mixture according to claim 1, characterized in that: A liquid level meter (8) is installed on the cover plate (2), the liquid level meter (8) is a top-mounted magnetic flap floating ball liquid level sensor, and a floating ball of the magnetic flap floating ball liquid level sensor extends into the recovery tank (1).
3. A device for recovering oil and water according to claim 1, characterized in that: A one-way valve (9) is arranged on the liquid discharge pipe (32).