CN201031154Y - floating oil skimmer - Google Patents

Abstract

Floating boat type oil collector, used in closed grease traps or large tanks to collect and export waste oil, including pool/tank, floating body in the pool/tank and its oil suction port, pump, floating body The oil suction pipe is connected to the pump oil inlet pipe outside the pool/tank by a rotary joint fixed on the upper side wall of the pool/tank, and a valve is installed on the pump outlet pipe. The equipment has a compact structure, a small footprint, and is easy to operate. High degree of automation, less maintenance workload, convenient management, low energy consumption, low operating cost, not affected by the level of liquid in the pool and tank, high separation and recovery efficiency, no dosing, no secondary pollution, recovered oil can be reused use.

Description

floating oil skimmer

technical field

The utility model relates to an oil collector, which is used in a closed grease trap or a large tank to collect and export waste oil.

Background technique

At present, in the treatment of oily wastewater in closed grease traps or large tanks in oil and gas fields, there is no equipment that can directly separate volatile light oils (such as condensate oil, etc.) from the pools or tanks. It turned out to open an opening on the grease trap or a large tank, install a valve, install a liquid level tube to see how thick the oil layer is inside with eyes, and open the valve to drain the oil. The disadvantages are: 1. It cannot be used when the liquid level is low. Drain the oil; 2. When the liquid level is high, the water and oil can be released together; 3. It cannot work continuously. If the settlement time is not enough, the oil and water will be released together; 4. If the water outlet is not supervised, it cannot be discharged Drain the oil. Chinese patent application 91219591.6 discloses "a kind of floating oil collector", which is suitable for collecting floating oil on the water surface. It is mainly composed of pumps, cofferdams and floating bodies. At the same time, the pump pumps the oil that enters the cofferdam to other oil storage devices, so as to achieve the purpose of collecting floating oil. The floating oil receiver is suitable for oil slicks on rivers and non-volatile oil in unsealed grease traps, non-toxic, non-explosive, and non-corrosive occasions, and is not suitable for closed grease traps or in oil and gas fields. The reason is that the pump cannot be installed in a closed grease trap or in a large tank due to the fact that oil and gas fields contain volatile light oils such as condensate oil, methanol, etc., which are toxic, explosive, and highly corrosive. For example, safety factors such as equipment turning over and prone to explosion in sewage are absolutely not allowed in terms of design and safety.

Contents of the invention

The utility model aims at overcoming the above disadvantages and provides a floating boat type oil collector, which has a simple structure, is safe and reliable, is not affected by the liquid level in the pool and tank, has high separation and recovery efficiency, and has a very low water content in the extracted oil. The main innovation is that the pump is installed outside the pool/tank, and the oil inlet pipe of the pump is connected with the oil suction pipe of the floating body with a rotary joint, so that the oil can be freely collected out of the pool/tank. Specifically, it is implemented in this way: the floating boat type oil collector includes the pool body/tank body, the floating body in the pool body/tank and the oil suction port on it, and the pump, which is characterized in that the oil suction pipe of the floating body and the outside of the pool body/tank The oil inlet pipe of the pump is connected by a rotary joint fixed on the upper side wall of the pool/tank, and a valve is installed on the oil outlet pipe of the pump. The pool body/tank body of the utility model has built-in oil level and oil-water interface controllers, and the signals of the oil level and oil-water interface controllers are connected to the control cabinet outside the pool body/tank body to realize automatic and continuous control, and there is no need in the production process Human supervision. The floating body composed of buoys and floating balls, pumps, oil level, oil-water interface controller, control cabinet, etc. constitute a complete treatment device. The liquid level of sewage in the tank rises and floats, and decreases as the liquid level of sewage decreases. The floating boat type oil collector floats on the liquid surface of the oily sewage grease trap or the oil removal tank, and the oil suction port is adjusted to the set position of the oil layer. When the oil layer reaches the set thickness, the pump is automatically turned on to suck the oil of a certain thickness on the liquid surface. In the oil storage tank outside the pool and tank, when the oil layer drops to the set thickness, the pump will be automatically stopped. The whole process is automatically controlled, and no special personnel are usually required to manage it.

For intuitive operation, the utility model is equipped with a sight tube on the oil inlet pipe of the pump, and a pressure gauge is arranged on the oil outlet pipe of the pump, and the signal of the pressure gauge is connected to the control cabinet.

The equipment has compact structure, small footprint, simple operation, high degree of automation, less maintenance workload, convenient management, low energy consumption, low operating cost, is not affected by the level of liquid in the pool and tank, and has high separation and recovery efficiency. Dosing, no secondary pollution, recovered oil can be reused. According to the characteristics of different oily sewage, making full use of the characteristics of oily sewage separation, it has a wide range of adaptability to various difficult oily sewage, especially suitable for oily sewage with large oil content in grease traps and oil removal tanks. It can collect oil continuously and automatically, and the water content of the extracted oil is very low, which has good technical and economic benefits in terms of energy saving, water saving, and environmental protection. When dealing with larger sewage, it is only necessary to add a single machine, so the equipment has the function of module combination.

Description of drawings

Fig. 1 is the schematic diagram of the structure of the utility model grease trap.

Fig. 2 is a structural schematic diagram of a large tank of the present invention.

Detailed ways

Floating boat type oil collector for oil separation tank. The tank body/tank body 11 has a built-in floating body 1 composed of a buoy and a floating ball. There is an oil suction port 2 on the floating body. The oil inlet pipe 13 of the pump 5 is connected by the rotary joint 3 fixed on the upper side wall of the pool body/tank body 11, and the oil level and oil-water interface controller 10 is installed in the pool body/tank body 11 to control the oil level and oil-water interface. The signal of the meter 10 is connected to the control cabinet 9 outside the pool body/tank 11, the oil inlet pipe 13 of the pump 5 is equipped with a sight tube 4, and the oil outlet pipe 8 of the pump 5 is equipped with a valve 7 and a pressure gauge 6, and the signal of the pressure gauge 6 is connected to the control cabinet9.

Claims (5)

1. Floating boat type oil receiver, including the tank body/tank, the floating body in the tank body/tank and the oil suction port on it, and the pump, which is characterized in that the oil suction pipe of the floating body and the pump oil inlet pipe outside the tank body/tank are fixed by The rotary joint at the upper side wall of the tank body/tank is connected, and a valve is installed on the pump outlet pipe. 2. The floating boat type oil receiver according to claim 1, characterized in that the tank body/tank body is equipped with an oil level and oil-water interface controller, and the signal of the oil level and oil-water interface controller is connected to the tank body/tank body control cabinet. 3. The floating oil skimmer according to claim 1 or 2, characterized in that the floating body is composed of a buoy and a floating ball. 4. The floating vessel oil skimmer according to claim 1 or 2, characterized in that a sight tube is placed on the oil inlet pipe of the pump. 5. The floating vessel oil receiver according to claim 1 or 2, characterized in that a pressure gauge is placed on the pump outlet pipe, and the signal of the pressure gauge is connected to the control cabinet.

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