RU107707U1 - DEVICE FOR MIXING HIGH VISCOUS LIQUID AND WASHING ITS SEDIMENTS IN THE RESERVOIR - Google Patents

Abstract

 A device for mixing highly viscous liquid and erosion of its sediment in the tank, comprising a housing with an element connecting the device to the tank, a shaft mounted on bearings in the housing with a propeller at the end, connected via a transmission to the engine, a shaft sealing device relative to the housing and a device for cyclic angular rotation of the shaft in a horizontal plane, characterized in that it is provided with a container with a solvent, connected by a pipeline to a pump, which is connected by a pipe to the internal cavity stroystva seal.

Description

The utility model relates to industries using various highly viscous liquids stored in tanks and containers, and can be used to mix these liquids and wash away their sediments.

A device for mixing the liquid and erosion of its sediment in the tank (description of the patent of the Russian Federation No. 2238795 C12 MKI: 7 B01F 7 \ 08) containing a housing in which there is a shaft with screw blades at the end, elements of the tight connection of the shaft in the hole of the tank, the rotation mechanism shaft movement, and for the angular movement of the shaft in the horizontal plane, a single or multi-stage gearbox and crank mechanism, with the input gear link connected to the shaft, and the output link with a crank mechanism articulated to the reserve the bar, the crank mechanism comprises a crank mounted coaxially to the shaft, a connecting rod in the form of a crank mounted on the crank, inclined to the axis of rotation of the crank and resting on the bearing of the rim and protruding from it, while the finger is pivotally connected at one end pivotally mounted on the reservoir.

The closest technical solution, selected as a prototype, is a device for erosion of bottom sediments in a tank with oil and oil products (description to the patent of the Russian Federation No. 2220766 C1 MKI 7 B01F 15 \ 00, 7 \ 00) containing a supporting body with an element for connecting the device to the wall of the reservoir, the shaft, one end of which is connected via a transmission to the engine, and the other with the propeller fixed to it, passes into the reservoir, the support elements and shaft seals relative to the supporting housing, the sealing part between the supporting housing and for the automatic cyclic angular rotation of the shaft in the horizontal plane, it additionally includes a gearbox mounted on the shaft inside the support housing, the input link of which is connected to the shaft, the external link is fixed from rotation around the shaft axis, and the bearing support is mounted at an angle to the axis of the shaft equal to the maximum angle of rotation of the shaft in the horizontal plane, from the outer sleeve of which a finger protrudes through the groove in the support housing, a rod, articulated connected with a finger and with an element of attachment to the tank wall.

The disadvantage of these devices is that they do not have the protection of the shaft sealing devices relative to the housing from breakdowns during the hardening of highly viscous fluids that they mix.

In these devices for mixing the liquid and erosion of its sediment in the tank, the shaft is capable of sealing devices relative to the housing, made, for example, in the form of a mechanical seal. The reservoir fluid is constantly located in the internal cavity of the mechanical seal, which, with the help of special rings rubbed against each other, prevents this fluid from flowing out at rest and during their mutual rotation. The internal cavity of the mechanical seal is filled with many parts moving relative to each other, the gaps between which are small. In these gaps, the reservoir fluid is constantly located. When mixing highly viscous liquids in tanks, for example, fuel oil, abnormal and emergency situations can occur when the temperature of a highly viscous liquid (fuel oil) drops below the maximum permissible value (for example + 40 ° C) and the liquid solidifies, turning into an amorphous mass. This mass is located in the small clearances of the mechanical seal and practically glues together all of its moving parts, including the rings ground to each other. When the device is turned on, the mechanical seal is depressurized due to damage to the rings and breakage of many parts glued together. Abnormal and emergency situations in tanks with highly viscous liquids occur quite often during heating system failures, power outages, etc.

After normalizing the situation with heating the tank, there is a need to include known devices for mixing the liquid in the tank. After switching on, the known fluid mixing devices in the tank fail due to a breakdown of their mechanical seals.

The main task, which the utility model aims to solve, is to create a reliable device for mixing highly viscous liquids and erosion of its sediments in the tank by eliminating device breakdowns during solidification of highly viscous liquids.

EFFECT: increased reliability of a device for mixing highly viscous liquids in tanks during solidification of these highly viscous liquids.

This object is achieved in that a device for mixing highly viscous liquid and erosion of its sediment in the tank, comprising a housing with an attachment element of the device to the tank, a shaft mounted on bearings in the housing with a propeller at the end, connected through a transmission to the engine, a shaft sealing device relative to the housing and a device for cyclic angular rotation of the shaft in a horizontal plane, equipped with a container with a solvent, connected by a pipeline to a pump, which is connected by a pipe to the internal the lower cavity of the sealing device.

A device for mixing highly viscous liquid and erosion of its sediment in the tank has the following advantages.

The proposed device has a container with a solvent. The solvent is selected according to the type of highly viscous liquid, for example, if it is fuel oil, then the solvent for it is kerosene or gasoline. The tank is connected by a pipeline to a pump, for example, a high-pressure hand pump, which through another pipeline delivers this solvent to the internal cavity of the mechanical seal. The solvent under high pressure enters the internal cavity of the mechanical seal, dissolves the hardened, highly viscous fluid and, through a special channel, flushes it outward, providing free mutual movement of the mechanical seal parts. After washing, the channel is sealed, for example with a special threaded plug. This eliminates the breakdown of the mechanical seal after turning on the device after cooling by a highly viscous liquid in the tank below the permissible limit.

Figure 1 shows the design of a device for mixing highly viscous liquid and erosion of its sediment in the tank.

Figure 2 is a rear view of A

Figure 3 is an enlarged section of a shaft sealing device relative to the housing.

A device for mixing highly viscous liquid and erosion of its sediment in the tank (figure 1) contains a housing 1 with an element 2 connecting to the tank. In the housing 1, a shaft 3 is mounted on the supports 4, which is connected to the engine 6 through a gear-belt drive 5. A propeller 7 is fixedly mounted on the end of the shaft 3. The shaft 3 has a sealing device 8 relative to the housing 1 and a cyclic angular device 9 is also mounted on it turning in the horizontal plane. A container 10 filled with solvent 11 is mounted on the housing 1 (FIG. 2). The reservoir 10 is connected by a pipe 12 to a pump 13, which, in turn, is connected through a pipe 14 to the internal cavity 15 (FIG. 3) of the shaft sealing device 8 relative to the housing 1. The internal cavity 15 of the shaft sealing device 8 relative to the housing 1 can be connected to the external environment through a plug 16.

A device for mixing the liquid and erosion of its sediment in the tank works as follows.

In the normal course of the mixing process, when the temperature of the liquid being mixed does not drop below the permissible level, the device for mixing highly viscous liquid and erosion of its sediment in the tank is operating normally. When cooling a highly viscous liquid below acceptable, the highly viscous liquid turns into an amorphous mass and sticks together all the moving parts of the seal device 8. When you start the device, they may collapse. To avoid this, the plug 16 is unscrewed and, using a pump 13, for example a manual pump, from the tank 10, the solvent 11 is injected under high pressure through the pipes 12 and 14 into the internal cavity 15 of the seal device 8. The solvent 11 under high pressure dissolves and flushes out the highly viscous liquid through the hole where the plug 16 was installed. All the moving parts of the sealing device 8 are free and the device for mixing the liquid and washing out its sediments in the tank can be turned on. The risk of breakage is excluded.

The proposed design of a device for mixing the liquid and erosion of its sediments in the tank can be used in technological processes with highly viscous products, such as fuel oil, oil sludge, etc.

Claims (1)

A device for mixing highly viscous liquid and erosion of its sediment in the tank, comprising a housing with an attachment element of the device to the tank, a shaft mounted on bearings in the housing with a propeller at the end, connected via a transmission to the engine, a shaft sealing device relative to the housing and a device for cyclic angular rotation of the shaft in a horizontal plane, characterized in that it is provided with a container with a solvent, connected by a pipeline to a pump, which is connected by a pipe to the internal cavity stroystva seal.