RU2490213C1 - Device for removal of oil-bearing fluid surface layer - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention relates to cleaning the objects from oil-bearing fluids. Proposed device comprises floating oil collection means composed of belt conveyor consisting of endless thin perforated tape mounted on hollow sealed drums. Float composed of hollow vessel is arranged between hollow drums and belt runs. Said float is secured to moving frame to swing along with belt conveyor relative to surface layer of oil-bearing fluids around drive drum shaft running in two bearings secured to fixed frame together with the drive. Besides this device comprises drain system composed of discharge chute. To decrease friction of belt with drum surfaces and float, skis are arranged between said surfaces and secured to surfaces of the drums and float. Said belt is made from metal or polymer oil-resistance material and mounted on three hollow sealed drums to make triangular cross-section conveyor. Note here that two drums are drive components while float is shaped to triangle.

EFFECT: higher efficiency.

4 dwg

Description

The invention relates to devices for collecting the surface layer (for example, oil) of oily wastewater or other immiscible liquids and can be used to collect oil products from the surfaces of reservoirs, rivers, seas and oceans, as well as in wastewater treatment plants for water supply and sanitation in chemical, metalworking and other industries when cleaning technological, cutting fluids from organic impurities.

The claimed invention is aimed at solving the problem, which is to improve the quality and performance of removing the surface layer of oily wastewater.

A device for collecting oil from the surface of the water (see RF patent No. 20066549. A device for collecting oil from the surface of the water / Ivanov VG IPC EV 02/15. Publ. In BI No. 2, 1994), including a floating oil collector in the form of a conveyor belt containing an endless belt of oil-resistant material with transverse tabs absorbing oil products, and two drums attached to the endless belt (one drive, the other driven). Between the driving drum and the endless belt, a squeeze roll is built in, at the bottom of which there is a drain tray for draining the squeezed oil products into the storage tank. All oil sump is placed on the boat. One of the main Disadvantages of this device is the low quality and performance of the collection of petroleum products, which contain a large amount of water (up to 20%), trapped by the transverse lining as a result of adsorption.

A device for removing oils from the surface of the water is also known (see the MS-500 mesh-type oil-collecting device developed by UkrGSTC Energostal, published on the website www.energostal.ua). The principle of operation of the device is based on the adsorption of oil on the surface of a moving endless belt of a conveyor belt. The endless tape is made in the form of a three-dimensional netting thrown over a perforated drum, “driving the tape. Inside the rotating drum there is a tray for receiving the collected oil. At the top of the perforated drum and net there is a device for supplying compressed air, when it is fed under pressure, the oil flows through the weaving net and the holes in the perforated drum into the tray, and then into the storage tank.

The disadvantages of such a device include the following: firstly, due to the developed surface of the endless ribbon in the form of a three-dimensional netting network, a large amount of water (up to 20%) is also removed along with the oil, as a result of which the quality of the removed product decreases.

Secondly, the absence of a second driven drum and conveyor frame leads to unstable operation of the conveyor belt, especially during fluctuations of the surface layer of liquids (for example, when removing the surface layer of oily liquids from the surfaces of large bodies of water, rivers, seas, lakes, oceans or in centralized systems coolant cleaning in metalworking and other industries).

Thirdly, due to the small area of contact of the conveyor with the surface layer of oil or other oily liquids, the product removal capacity is still small.

The closest in technical essence to the claimed invention is the selected device as a prototype for removing the surface layer of oil-containing liquids (see; RF patent No. 2366613. Device for removing the surface layer of oil-containing liquids. IPC C02F 1/40. Published in BI No. 25, 2009 g.)

A device for removing the surface layer of oil-containing liquids, including a floating oil-collecting device, containing two hollow sealed drums mounted for rotation around their own axes and mounted on a movable frame attached to the fixed frame articulated in its upper part, a stationary frame with a drive for rotation of hollow airtight drums, a drain system made in the form of a tray for draining oil products' along drain lines into a tank for further x transportation, moreover, the floating oil sump is made in the form of a conveyor belt, consisting of an endless thin metal perforated tape on the sides mounted on two hollow airtight drums, one of which is the lead and the second is driven, having one sprocket at the ends for driving perforated tape, and fastened together with the tape pivotally with the help of supports on a moving frame, and between the hollow drums and the branches of the tape is placed a float in the form of a hollow container rectangular a section attached to the movable frame having a possibility of rocking with respect to the conveyor surface layer of oily liquids around a driving axis of the drum mounted on two supports. to a fixed frame mounted on the deck of a self-propelled barge in the bow or on a settling tank in the workshop, and the drain plate is mounted on a fixed frame with the possibility of contacting it with an endless tape at the place of installation of the fixed frame at the top of the settling tank or on the deck of a self-propelled vessel in its bow, and the surfaces of the driving and driven drums and the float are equipped with skis to reduce friction of the tape with these surfaces, and the device is equipped with an additional float in the form of a hollow tank of round cross-section ia fixed with a few rails to the movable frame.

One of the disadvantages of this device is the low productivity of removing petroleum products from the surfaces of water bodies due to the small contact area of the perforated tape on the sides with petroleum products.

The specified disadvantage is caused by the following circumstances. Oil products adhere to the conveyor belt only on a portion of the belt thrown over the driven drum.

The technical result is an increase in the productivity of removing petroleum products from the surfaces of water bodies.

The technical result is achieved by the fact that the device for removing the surface layer of oily liquids containing a floating oil collecting device, made in the form of a conveyor belt, consisting of an endless thin perforated tape on the sides mounted on hollow sealed drums, one of which is made leading, having at the ends one asterisk for driving the perforated tape and pivotally mounted together with the tape using supports on a moving frame, while between the hollow drums and branches of the tape placed a float in the form of a hollow container, attached to a movable frame and made with the possibility of swinging together with a conveyor belt relative to the surface layer of oily liquids around the axis of the drive drum mounted on two supports to a fixed frame together with the drive, a drain system made in in the form of a drain tray mounted on a fixed frame with the possibility of contacting it with an endless tape at the place of installation of the fixed frame, and to reduce it; Skis attached to the surfaces of the drums and the float are mounted between the surfaces of the perforated tape with the surfaces of the drums and the float between these surfaces, while the fixed frame is designed to be installed on the deck of a self-propelled vessel in the fore part or on the deck of a self-propelled barge in its bow or on the tank -the sump in the workshop, the perforated tape on the sides is made of metal or a polymer oil-resistant material, such as polypropylene, and mounted on three hollow airtight drums to form iem shaped conveyor sector, the two drums are made slave, and the float has a longitudinal sectional shape of a sector to increase the area of contact between the conveyor belt and the surface layer of oily liquids.

The prototype and the claimed invention have similar significant features: the presence of a floating oil gathering means in the form of a conveyor belt held on the surface of oily liquids using a float; scraper for collecting oil products; a drive for transmitting torque to the drums; drain system.

In relation to the prototype, the claimed invention has the following distinctive features: in order to increase the contact area of the oil intake device, it is equipped with three drums (one master and two followers); the hollow float of the oil intake device in longitudinal section is made in the form of a “sector”, the additional float has the ability to simultaneously serve as a hollow sealed driven drum.

The invention is illustrated in the drawing, where Fig.1 shows a device for removing the surface layer of liquid, side view, Fig.2 is a top view of Fig.1, Fig.3 is a section aa in Fig.1, Fig.4 - section BB in figure 1.

A device for removing the surface layer of oil-containing liquids includes a floating oil collector 1 (Fig. 1,2), a fixed frame 2 with a drive 3 placed on it, a drain system consisting of a tray 4, a tank for accumulating foreign oils 5. Floating oil collector 1, in turn, is made in the form of a "sector" belt conveyor, consisting of an endless thin metal (or made of a polymer oil-resistant material) perforated on the sides of the tape 6 (Fig.1, 2) mounted on three voids 's sealed drums (single lead 7 and the other - 2 driven 8) having at the ends on one sprocket 9 and 10 (Figures 3, 4) for driving the endless thin metal perforated on the sides of the tape. Between the hollow drums and the branches of the tape placed a float in the form of a hollow container "sector" in the longitudinal direction of section 11 (Fig.1, 5). The drums 7, 8 with sprockets 9 and 10, the perforated tape 6 and the float 11 are mounted on the movable frame 12. It should be noted that the walls of the float 11 simultaneously serve as a movable frame 12 (Figs. 3, 4). To reduce the friction of the perforated tape with the surfaces of the driving and driven drums and the float, skis of triangular section 13 are mounted between them. All oil collecting means 1 has the ability to swing relative to the surface layer of fluids around the axis of the driving drum 7, mounted on two supports 14 and 15 to a fixed frame 2. A gear motor is used as a drive. To drain foreign oils from the conveyor belt, a drain system is used in the form of a tray 4 with the possibility of contacting it with a metal or polymer tape 6, also mounted on a fixed frame 2, and a tank for collecting foreign oils 5. The entire device is mounted on top of the coolant sump tank, which are washing solutions at enterprises or on the deck of a self-propelled vessel in the bow of it.

A device for removing the surface layer of oily liquids works as follows. The liquid contaminated with oil products floats to the surface of tanks — sedimentation tanks or reservoirs of rivers, lakes, oceans, and after that the floating oil collecting means 1 sinks to the surface of the liquid. When rotating the hollow sealed drums 7 and 8, mounted together with the tape and the float on the movable frame 12, using the drive 3, located on the frame 2, a thin metal perforated on the sides of the tape 6 using the sprockets 9 and 10 is set in motion. Oil products adhere to it and are carried upstairs, where the walls of the tray 4 are removed and dumped into the tank for collecting oil products 5. Moreover, the tape moves along the skis 13 attached to the surfaces of the hollow airtight drums 7 and 8 and the float 11, and the floating oil gathering device can oscillate relative to the surface layer of oily liquids around the axis of the drive drum 7 mounted on supports 14 and 15 to a fixed frame 2.

The proposed device has the following advantages. Firstly, due to the increase in the contact area between the conveyor belt and the surface layer of oily liquids, the performance of removing oil products from the coolant or other oily liquids increases significantly. Secondly, due to the large volume of the float, the proposed device will work more stable than the known devices when the surface layers of oily liquids fluctuate.

Claims (1)

A device for removing the surface layer of oily liquids containing a floating oil collector made in the form of a conveyor belt, consisting of an endless thin perforated tape on the sides mounted on hollow sealed drums, one of which is made leading, having one sprocket at the ends to set in motion perforated tape and pivotally fixed together with the tape using supports on a movable frame, while a float is placed between the hollow drums and the branches of the tape in the form of a hollow tank, attached to a movable frame and made with the possibility of swinging together with a conveyor belt relative to the surface layer of oily liquids around the axis of the drive drum mounted on two supports to a fixed frame together with the drive, a drain system made in the form of a drain tray mounted on a fixed frame with the possibility of contacting it with an endless tape at the place of installation of the fixed frame, and to reduce friction of the perforated tape on the sides with a surface skis attached to the surfaces of the drums and the float are mounted between the surfaces of the drums and the float, while the fixed frame is designed to be installed on the deck of a self-propelled vessel in the fore part, or on the deck of a self-propelled barge in the fore part, or on a settling tank in the workshop characterized in that the perforated tape on the sides is made of metal or a polymeric oil-resistant material, for example polypropylene, and mounted on three hollow airtight drums with the formation of a conveyor in the form of sects ora, while two drums are driven, and the float has a longitudinal section in the shape of a sector to increase the contact area between the conveyor belt and the surface layer of oily liquids.

Images