IL103878A - Device for heating stirring and discharge of thickened and viscous liquids from vessels - Google Patents

Description

Q^fio ο»ϊη mnwi mvji .owni i pnn DEVICE FOR HEATING, STIRRING AND DISCHARGE OF THICKENED AND VISCOUS LIQUIDS FROM VESSELS DEVICE FOR HEATING, STIRRING AND DISCHARGE OF THICKENED AND VISCOUS LIQUIDS FROM VESSELS The invention is a complex device ensuring heating and mixing viscous and thickening products to facilitate their discharge from vessels regardless of the vessel's volume, location, dimensions, as well as Lhe ofher vessel's desing pecularities .

There is known a device for this purpose according to the patent application //100820 submitted to the Israeli Patent Office on January 30, 1992.

In the prototype device the stationary discharging pump is installed on the platform, the said platform is located at a certain distance from the vessel The discharging process with the application of the stationary pump is used for pumping out large quantities of a product from big vessels (railway trunks, oil refineries, etc).

However, various small users very often experience great difficulties in discharging thickening products into smaller vessels as there are no discharging pumps at the dicharging stations of factories, farms, railway stations, etc.

The purpose of the proposed invention is to increase the efficiency of the device as described in the patent application //.100820, which was filed as a main application, whereas the given application Is submitted to receive a supplementary patent.

The efficiency increase in the proposed device is achieved through the process Intensi ication , broading the field or applications , the increase in reliability, and considerable cost reduction or the technological equipment .

All the above advantages of the proposed device will lead to the considerable cost reducttlon of the overall process for disharging viscous and thickening products from vessels.

The said objective is achieved by that the device for heating the thickened liquids contains a removal pump installed in the body of the heater, which pumps out the heated product, taking it from the most heated zone.

The most important structural features of the device are the following: - the intake of the liquid by the pump is being carried out from the most heated zone, thus ensuring the fluidity of the product for longer ^p-f periods of time, thus providing possibility of its transpor ation at greater distances from the vessel; - the pump begins to work being preliminary filled with the heated liquid, thus ensuring the pumping of the liquid immediately after having been activated; the idle runs of the pump in the initial period are completely excluded. thus diminishing wear-out of the parts subjected to friction and simplifying the pumping process, especially in cold seasons of the year, since there is no need to pre-fill the intake hose and the pump with the hot product; - due to the fact that the pumping in the heated product is almost completely excluded, since the intake is occuring directly in the product mass, the restriction on the choice of a pump and on the height of intake are significantly reduced; - the pump power is spent mostly on the pumping of the liquid into the hose or pipeline; - there arise vast opportuni ies to change Ihe dimensions of the device or its form and positioning of its units.

Figs. 1, 2, 3 show the sectional view of the device, its side and bottom views .

Fig. 4 shows the schematic diagram of the bottom attachment unit of the worm. Figs. 5, 6, 7, 8, 9 show the schematic diagrams of different application versions of the proposed device.

The device for heating, stirring and discharge comprises body 2 (figs. 1, 2, 3) filled with non-freezing liquid 3 which plays the role of an intermediary heat carrier whose properties permit i to achieve the required heating temperatures in a closed vessel whithout vapor formation and incresing pressure, e.g.. glycerine, ethylene-qlycole , or others.

The surface of the body is made with corrugations 4 in order to increase the heat release and to increase the riqidlty of structure. The form of body can be sherical, cilindrical, or anv other, depending on the character of the product and structural features of the vessel . v Positioninng and the type of drives could also change, depending on struc -tural features of the vessel. The non-freezin liquid is heated with thermoelectric heating elements 5 (THE) whose desion ensures reaching the necessary tempreratures . The design of the device provides for rapid replacement (if a necessity arises) or THE ' s attached to flanges 6 through insulators 7 with bolts 8.

Power is supplied through wiring 9 attached to the body by clamps 10. On the body there is neck 11 for filling or additional with the liquid, stopper 12 with valve 13 for blowing off the air that forms in heating.

To additionally heat the product at the periphery of the vessel with heated jets, in the top part of the body, there are nozzles 14 with packings.15 placed on jet distributor 16. The device includes worm 17 (or propeller blades) mounted on shaft 18. The complex consisting of items 14, 15, 16, 17, 18 is named the jet mechanism. The jet mechanism is fitted to stationary tube 19 and rests with its flange 20 on support roll bearing 21 placed in socket 22 fixed to the body of the device with bracket 23.

The botton part of the stationary tube is provided with filter 24 which prevents the pumping out system from clogging with extraneous large in -elusions and which does not create noticeable resistance to liquid flow into the cavity of the device.

In its upper part the jet mechanism rests against sliding type support beari.i 25 and roll bearing 26.

The upper part of the stationary tube contains flange 27 for mounting of discharge pump 28 to which connection 29 to a main or hose 30 is attached.

The jet mechanism is driven with electiric drive 31 (protected version) , or with a turbine driven with comoressed air, by connecting drive gear 33 set up on putout shaft 32 with driver gear 34 mounted at mounting site 35 of the distributor.

In the body of the device thermocouple 36 is mounted purposed for automatic disconnection of the THE's power supply when the required temperature is reached, and for switching it on, when the temperature decreases.

On the botton part of the device support ribs 37 are positioned, and cavity 38 for intake with blades or a worm, of the heated product.

The devfice is hanged on the lifting mechanism through tie-rods 39 and beam 40.

The above accepted notation of the parts relate to Figs. 1, 2 and 3.

The device for heating, stirring and discharge operates as follows.

After thermoelectric heating elements 5 (fig.l) have been disconnected, and liquid 3, hence body 2, has been heated, device 53 (fig. 5) together with attached to it hose 44, using lifting mechanism 45, is sunk through neck 50 into vessel 42 on the mass of thickened prduct 54.

Contacting the heated device, the product, on heating, becomes less viscous and does not resist to the down advance of the device under its weiqht to the bottom part of the vessel or to any level. Thus, immersing into mass, the device heats up the product in its neghbourhood , down and around it. The product having been somewhat heated up, the jet device becomes operational.

While rotating, shaft 18 (fig. 1) with worm 17 (or propeller blades) intakes from below the heated product through intake opening 38 (cavity) and jets it in form of a heated jet through nozzles 14 of packings 15 towards the thickened, yet not heated mass of the product, thus geating it.

Having heated up a certain quantity of the product, i is being pumped out through hose 30 using the pump of device 28 which intakes the product in the bottom part of the stationary tude filtered by filter 24. Depending on the required quantity of the heated up product, it is heated, made to circulate and pumped out.

These operations are controlled by a mobile remote push-button console not shown in the drawings .

Having ended pumping out the required quantity of the heated up liquid, the device is inactivated; in the vessel is left all the rest of the unheated thickened liquid.

Depending on the designation of the product, on required quantities to be used, ways of its use and on other reasons, the device is being left in the vessel or extracter for further use at other sites.

When again a need arises to discharge a quantity of the liquid, the process is being repeated.

If there is a need to completely discharge the liquid through the bottom valve of the vessel, or through its top neck, or simultaneously dischrge through the bottom and to pump out through the top neck, the device with the hose is sunk to the vessel bottom and heats up the thickened liquid from below.

The bottom layers of the product in the vessel in the zone of the heater are constantly under action of intensive heating and as the discharge or pumping out is being proceeded, the less heated products "drifts to" the device and becoming more and more heated by the jets of heated product, flows down to the intake opening of the heater.

Since the heated part of the product is being discharged or pumed out, a reliable circulation of the product is created, according to the scheme: the vessel - the Jet mechanism - the vessel.

According to this scheme, a part of the ho product passes through the jet mechanism of the device and force-heats with the hot jets the next "portions" of the product distanced from the heater, while another part of the product is being heated by contacting the hot mass at the bottom of the vessel.

The upper layers of the cold product sink and immersing into the hot product, are heated, become flowable, while the jet mechanism continues to heat the rest of the product with its jets, washing it off the cold walls of the vessel.

The heated air in the vessel, whose temperature also increases due to the heated body of the device, hot product and jets, also contributes to complete removal of the product from the vessel .

Fig. 4 shows an enlargement of the bottom attachment unit of the worm.

In cavity 38 of the device, casing 22 is attached to body 2 by brackets 23, to which the bottom part of stationary tube 222 is fixed. In the casing support bearing 21 is placed, against which flange 20 is rested, of tube 18 of worm 17, fitted on the stationary tube. The bottom end of the stationary tube is provided with a filter.

Fig. 5 shows a diagram of the device in working position, upon heating and discharge of the product from the stationary vessel into tank trucks.

Proposed device 53 is hinged on lifting mechanism 45 placed on girder 41 with beam 43, with which tank 42 is regularly equipped.

Heated liquid 54 through hose 44 passing through neck 50 is pumped out with the pump of the device from the vessel and discharged into tank truck 47.

The end of hose 46 sunk into neck 48 of the tank truck is bellowed or telescopic in order to be sunk or pulled out of the neck. A gasket is mounted on the end of the hose, preventing site pollution in the absence of a customer.

In the drawing lid149 is shown, which prevents the vessel content from rain water and other extraneous inclusions.

To prevent spontaneous rocking of the filling part of the hose, it is fixed with brackets 51. The circulation motion of the heated. liquid is shown with lines 55.

Fig. 6 shows a diagram of discharge of product 56 by device 57 from raylway tank car 58 through hose 59 passing through neck 60 into tank truck 61 through neck 62.

The diagram does not show lifting mechanisms, since the pumping is being carried out in totally unconvenient premises, like small raylway stations, or in the field conditions.

In these cases the device with a hose is inserted into a vessel with a truck crane or by hand, using a tripode on which a hand hoist is being hinged.

Claims (1)

1. The power supply of the device in such cases is ensured by a makeshif cable or by a Diesel-generator. Such discharge technique of heated liquid with the proposed device will completely suffice the needs of customers using small quantities of thickene< products (bitumen, fuel oil, various oils, etc), situated at distances from the railways, for example, farmers, exploring parties drilling boreholes, in construction, road-construction, etc. The products delivered in tank trucks are similarly heated and pumped-out or discharged into stationary vessels of the customers: from the latter they cai be directed for further use with the help of the same device. Fig. 7 shows a tentative diagram of distribution of the heat flows denoted by arrows that arise due to the heating by device 63 of thickened product 64 in raylway tank car 65. Fig. 8 shows railway tank 70, whose product 69 is to be completely discharged after having been heated by device 68 sunk into the vessel by lifting device 67 hanged on girder 66. After the device has been inserted into neck 72 of the tank and the product has been heated, it is discharged into a specially designated vessel (not shown on the diagram) through tap 71 which is being opened by handwheel 73 and tie-rods 74. In this discharge version the device is not provided with a hose. Fig. 9 shows a diagram of the barreling of the heated product. Device 75 sunk into vessel 76 containing product 77, after its having been heated, delivers the product to barrels 82 placed on the ground 80 near neck 81. Claims A device for heating, stirring and discharge of thickened and viscous liquids from a vessel consisting of a heater with electric heaters and of a central space with a hollow rotating shaft located in it with the elements purposed transport the heated product, distinguished by the fact that, in order to increase the efficiency of discharge the product from the vessel, to achieve the autonomous action of the device, all-purposedness of its application and its transportability, a discharge pump is being located in the central cavity of the device connected to the unmovable intake pipe located in the shaft's cavity. f