DE382548C - Spiral pump for conveying, mixing, pressing liquids, gases and steam - Google Patents

Description

Spiral pump for pumping, niching, pressing liquids, gases and vapors. In the patent 378262 a spiral pump is described, which is characterized by the attachment of a pressure space between the riser pipe and the last spiral passage. The present device is a further development of this scroll pump.

The chemical industry, but especially the production of sulfuric acid, demands from their lifting and handling devices for liquids that the same are durable and economical, raise a steady flow of liquid and work without any loss of fluid, i.e. remain tight at all times. Previously related one devices that were operated with compressed air, such as pressure barrels, mammoth pumps and the like, but all of these devices are known to have an extremely poor one Efficiency. In addition, piston and centrifugal pumps, whose efficiency was significant is better used, but these bodies are almost impossible to seal hold and therefore give fluid losses. Which is known to be the most economical working spiral pump was rarely used, because on the one hand the intermittent work was not wanted and on the other hand the stuffing box is not sealed in this way could that no fluid losses occurred.

The present invention eliminates these inconveniences by building a spiral pump, which perfectly corresponds to the conditions of the industry, in that the pump and the stuffing box for liquids are completely tight and a steady flow of liquid is lifted.

The pump is therefore especially for lifting corrosive liquids such as acids. Caustic solutions and the like are suitable, but can of course also be used for other liquids. The idea is that the hollow shaft, which leads to the riser pipe, has double walls, so that two spaces are created, of which the inner one receives the liquid, the outer one the gaseous substances (air, gases, vapors), in both rooms the pressure is the same. The inner space is closed off from contact with the stuffing box packing by the outside surrounding it, so that the stuffing box packing cannot be attacked chemically or mechanically (by entrained sand and the like). There is also no loss of liquid, since only that in the event of leaks in the stuffing box ! gaseous agents, e.g. B. air, and no liquid, can escape while the liquid is kept away from the stuffing box.

The inner cavity is provided with openings of any type, e.g. B. holes, Slits of any shape provided to introduce the liquid.

To prevent liquid from entering the outer cavity, are the Radial artery of the outer space with during rotation when entering the liquid, the closures automatically come into effect provided, for example ball valves, flap valves, controlled valves, Schielfer or the like. If the pump and the shaft are now rotating, they are in each case; n half itself hetiti, lliclieii valves open, those lying in the lower half Valves closed, (let both liquid and air be under the same pressure and the valve balls by their own weight have all the \ -eniiiseats for sealing be pressed. The Raflialarine of the outer H ") lilrauiiies can still be arbitrary designed hollow Antz:; wear, -lie can also be designed to be deniable. This provides greater security against the ingress of liquid the outer Hcililrauni reached by the automatic locks already their Completed spaces before the liquid can enter them.

Likewise, the opening only takes place at a certain point in time. all which the closure body is already in the air space, t% -äl-ren, l the approach with the liquid still under the mirror of the same dips.

The attachment of ler automatic locks is necessary, although iin whole \\ 'in, ll; essel the same pressure is present, because the radialarine below the liquid level inside the chamber.

In the drawing there are A1, b. i the axial longitudinal section as an example a spiral pocket according to the present invention. It means i the spiral, 2 den Pressure chamber, 3 'lie shaft of the pump, .l the inner cavity. the shaft, the entry holes for the liquid in the cavity of the shaft, 6 (! en outer cavity of the shaft, 7 the hollow lugs of the radial arms, 8 the ordinary stuffing box and 9 the lug to the riser.

Fig. 2 shows the cross section of such a pump. It means the spiral again, 2 the pressure area, which is filled with air in the upper part and liquid in the lower part, I the inner cavity, 6 the outer hollow ridge of the shaft, 7 the hollow beginnings of the radial artery, io that closed ball valve, the tube attachment of which is filled with liquid, 12 (read the already open ball valve, the tube attachment is still immersed in the liquid so that no air, but also no liquid can flow in, 14. the open ball valve with full air flow through the tube attachment from your air space of the air chamber and 16 the already closed ball valve, whose pipe approach aper still with your I-uftratitrt so that the `` -eiliil '' is already is closed before still (let liquid in reaches the pipe socket. Dl: 12a, lialarnie and approaches, «-elche die e1: wear regular closures, inside too outside: the pump body lies. and are then appropriately, e.g. B. by T-pieces, with your Drtu_kraum the pump connected (Fig. 3 and 4). The exterior arrangement of the radial lines and approaches ] s advantage that their installation, their I2, agreement and replacement u @ w. very easily light becomes. If the mouths are blocked the approaches can then easily be removed after removal the blind lathe by introducing a Wire or rlgl. through the T-piece rlie 11 dung how-ler is cleared: i. The \ eilerting is prominent for vain planning spiralpunipe described. But it can also for Zvlinderspiralpunipen where the Diameter of the @ -) 'in: lungeii persists and the cross-section (hr `Vigation changed \\ ird, who # len used. Also is the Innovation at Rohrsiiiralpun] pen zti use those where the winding cross-section is the same is against what to comply with the law, after you want the pump to work, the wind (IungS diameter can be changed in rope size lich rope] inuss.

Claims (4)

PATENT CLAIMS: i. Spiralpunipe for conveying, mixing, pressing liquids, gases and vapors according to patent 378262, characterized in that the hollow shaft separated from the last spiral by a pressure chamber has double walls, so that two cavities (6 and q) are created, of which the outer ( 6) the gases and vapors, the inner (.I) absorbs the liquid. 2. Spiralpuinpe according to claim i, characterized in that that the outer cavity (6) of the shaft finitely glue in the course of the pump automatically to Effective closures (io, i2, 14, 16) are provided, which prevent that liquid can penetrate into the outer cavity (6). 3. Spiralptilnpe after Claim i and 2, characterized in that on the radial arms of the outer cavity Approaches (7) are attached. . 4. Spiral pump according to claim i to 3, characterized in that that the radial arms or lugs are located outside the pump body.