AT509879A4 - DEVICE FOR PROMOTING LIQUIDS - Google Patents

Description

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well pump

The invention relates to a device for conveying liquids, in particular well water, comprising a motor, a directly or indirectly driven by the motor 5 crank, a pump tube in which the liquid is conveyed, at least partially guided in the pump tube and through the Crank indirectly in oscillating vertical movement displaceable lifting linkage and driven by the lifting rod reciprocating pump. Furthermore, the invention relates to a use of such a device.

According to the prior art, various devices for conveying well water are known. In DE 197 33 926 A1 a Hubkoibenpumpe is described, which is driven by a motor 15 via a crank, a rigid connecting rod and a linkage. An energy supply of the engine is made by photovoltaic

Solar cells. Here, the use of a rigid connecting rod has a disadvantageous effect, as must be done to switch to an alternative drive, such as a manual operation, a conversion to the operative connection between the engine and linkage; For example, a connection between the rigid connecting rod and linkage must be solved.

In DE 696 04 798 T2 a vertical piston pump is described, which is offset by a mechanism not explained in detail in a vertical up and down movement. An energy supply can be done by batteries and solar cells. An operative connection between a motor and a pump linkage as well as a switchover to alternative types of drive is not discussed.

The object of the invention is to provide a device of the type mentioned, in which a switch to alternative types of drive can be done in a simple manner. In particular, an operative connection between the engine and lifting linkage should be able to be at least partially interrupted without conversion measures, so that it is possible to switch to manual operation. This should be achieved in a simple and cost-effective manner. 2

Furthermore, a use of such a device should be specified.

The first object is achieved in that in a device of the type mentioned a flexible traction means is provided, via which the crank 5, the lifting linkage in vertical movement. The flexible traction device thus assumes the function of a quasi flexible connecting rod.

An advantage achieved by the invention is to be seen in particular in that when switching to another type of drive, in particular to a manual operation, a 10 operative connection between the engine or the crank on the one hand and the lifting linkage or the reciprocating pump on the other hand automatically, d. H. by itself, is interrupted. Unlike when using a conventional rigid connecting rod nothing must be rebuilt in a change of the drive on the drive side, d. h., a change in the drive is easier and faster to carry out. Another advantage is to see that the device according to the invention is less error-prone by the use of flexible traction means instead of a rigid connecting rod: If the reciprocating pump should block in its top dead center, the operative connection between the engine and the reciprocating pump is automatically interrupted by the flexible traction means and the engine can continue undamaged. 20

It has been proven that the flexible traction means is designed as at least one belt, preferably made of plastic and / or fabric. Alternatively, chains, ropes, bands, etc. can be used. This represents a cost-effective, simple and durable solution. In particular, unlike the use of a rigid connecting rod, a bearing is saved on the lifting linkage.

Conveniently, the crank is elongated and provided on the crank a counterweight. As a result, a weight balance is achieved to the weight of the lifting linkage, which causes a discharge of the engine.

It is advantageous if the counterweight can be fixed on the crank at different positions and / or radially displaceable. As a result, a relief torque or weight compensation by the counterweight is adjustable and thus to a 30 3 • ··· φ «e · · · · · ·« ··· «φ · ♦ · #« «♦ · * I ··! · ······ # * · ·

Fountain depth customizable, since the weight of the lifting linkage depends on the depth of Bmnnentiefe.

Preferably, a crank pin rotatably mounted on the crank is provided, which 5 carries or fixes the flexible traction means and which is radially displaceable on the crank, thereby a working stroke of the reciprocating pump is variable. As a result, a delivery rate of the reciprocating pump (flow rate per stroke) can be changed and adapted to the engine power and well depth. With one and the same engine power, water can be pumped from different well depths. 10

It has been proven that a receptacle for the flexible traction means is provided in the region of an upper end of the lifting linkage. By a simple design of this recording without bearing a constructive simplification and reduction of manufacturing costs compared to the prior art can be achieved. 15

It is advantageous if the lifting linkage is arranged eccentrically to a rotational axis of the crank, in particular such that the lifting linkage during a lifting movement in an imaginary extension runs tangentially to a path of a point on the crank, which point leads the flexible traction means. As a result, a minimization of 20 transverse forces exerted by the crank on the lifting linkage and a reduction of friction losses and wear are achieved, as well as avoiding or at least reducing bending of the lifting linkage.

Conveniently, at least one guide for the lifting linkage is provided in an upper region of the lifting linkage, so that a perfect vertical movement of the same is ensured.

Preferably, an upper region of the lifting linkage is designed as a lifting rod, which lifting rod is made more solid than a lower region of the lifting linkage. A massive 30 construction is therefore only used where it is actually necessary. A lower part of the lifting linkage can be made less massive and thus lighter, whereby the mass to be lifted during a pumping operation can be kept low and a required driving power can be reduced. 4 ··· ··· ··· t · ft · ft ft · ft · · 91 · ft ·

It has been proven that the reciprocating pump comprises a pump cylinder, which is connected to the pump tube, a guided in the pump cylinder piston which is connected to the Hubgestänge, and one or more check valves. This represents a simple, proven and cost-effective pump design. 5

To translate a motor frequency to an optimal pump frequency, it is advantageous if a gear transmission between the engine and crank is provided.

In order to achieve a simple and cost-effective design, alternatively, a 10 belt transmission between the engine and crank can be provided.

Preferably, an electric motor, in particular a wheel hub motor, is provided as a motor. As a result, a cheap, stable and space-saving construction is achieved. It is advantageous if one or more photovoltaic solar cells are provided, which supply the motor with electrical energy. This achieves independence from an external power supply. Such an embodiment is particularly advantageous in areas with a hot climate: Here, a high water requirement is accompanied by intensive solar radiation. 20

To use a further renewable energy source for decentralized, self-sufficient energy supply, at least one wind turbine can be provided to drive the crank. A mechanical rotational energy of the wind turbine can therefore be used directly to drive the crank. This type of drive is also an ideal supplement to the previously described solar energy use by means of solar cells.

It is advantageous if a wind turbine and a generator are provided, wherein the wind turbine drives the generator and the generator supplies the engine with electrical energy. 30

Conveniently, an accumulator for storing electrical energy is provided. As a result, in the case of energy production by means of solar cells and / or windmill and generator, times with too little solar radiation and / or with too little wind strength can be bridged. 5 • ··· ···················

It is advantageous if a hand pump lever is provided with which the lift linkage is manually driven. As a result, water can be promoted by muscle power, if (currently) no other drive option is available. It has been proven that in a manual operation of the device, the flexible traction means decoupled the engine or the crank of the Hubgestänge. This can be used to switch over to manual operation without having to change or rebuild the drive side. When using a conventional rigid connecting rod conversion would be required. 10

Conveniently, at least one connecting means, preferably at least one belt, provided on the hand pump lever and a belt receptacle on the lifting linkage, via which the hand pump lever can be coupled to the lifting linkage. Such a low-cost design makes it easy to switch to manual operation.

Preferably, a removable extension for the hand pump lever is provided. As a result, adjustment of a lever length to well depth and available muscle strength can be carried out in a simple manner. 20

The second object is achieved in that a device according to the invention for pumping and conveying groundwater, in particular drinking water, from depths of a few meters to a few hundred meters is used. 25 Thus, in areas with insufficient infrastructure, especially without power supply, a decentralized water supply, eg. In developing countries.

Further features, advantages and effects of the invention will become apparent from the embodiment shown below. In the drawings, to which reference is made, show:

Figure 1 is a schematic representation of a device according to the invention for conveying well water with solar cells and hand pump lever. 6 · · * * # # # · · · · · · «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« «« ««

FIG. 2 shows a detailed view of a device according to FIG. 1; FIG.

FIG. 3 shows a further detail view of a device according to FIG. 1; FIG.

4 shows a simplified detail view of a part of a device according to FIG. 1;

5 is a perspective view of a variant of a device 5 according to FIG. 1.

Fig. 1 shows a schematic representation of a device 1 for conveying liquids, in particular well water. A reciprocating pump 5 is located in the interior of the earth and at least partially below a groundwater level. The reciprocating piston pump 5 comprises a pump cylinder 12, a piston 13 guided in the pump cylinder 12, which closes tightly against the pump cylinder 12, and three non-return valves 14a, 14b. The piston 13 is vertically movable up and down in the pump cylinder 12. In the piston 13 is a vertical bore, which is closable by two check valves 14b (outlet valves). An opening at the bottom of the pump cylinder 12 is also closed by a check valve 14a (inlet valve). The pump cylinder 12 is connected to a pump pipe 3 leading vertically up to above the earth surface; the piston 13 is connected to a vertically upwardly leading and at least partially guided in the pump tube 3 lifting linkage 4. By a vertical up and down movement of the lifting rod 4 and thus of the piston 13 in the pump cylinder 12 penetrating groundwater can be pumped through the pump tube 3 up to an outlet opening 24 in the pump cylinder 12 through the check valve 14a (inlet valve) Upward movement of the piston 13 closes the check valves 14b of the piston 13 and a water column located above the piston 13 in the pump tube 3 is raised. At the same time 12 water is sucked into the located under the piston 13 of the pump cylinder 12 through the check valve 14 a of the pump cylinder. In a subsequent downward movement of the piston 13 open the check valves 14b of the piston 13 (outlet valves) and closes the check valve 14a of the pump cylinder 12; the piston 13 moves down in the water column. In the following

Upward movement of the piston 13 close the check valves 14b of the piston 13 and the water column above the piston 13 is raised in the pump tube 3 again. By cyclically repeating this up and down movement of the piston 13 in the pump cylinder 12, water is pumped from the pump cylinder 12 through the pump tube 3 to the outlet opening 24. The piston rod 13 by the pump tube 3 upwardly leading lifting linkage 4 is connected at its upper end with a lifting rod 11. The lifting rod 11 is guided vertically by two guides 10 and has at its upper end a receptacle 9 for a flexible traction means 6. Above the lifting rod 11 is a rotatably mounted crank 2. In the region of one end of the crank 2, a crank pin 6 is rotatably mounted on the crank 2. A flexible traction means 6, here in the form of a belt made of plastic, is fixed to the crank pin 8 and leads to the receptacle 9 at the upper end of the lifting rod 11, where it is connected by a bolt with the lifting rod 11. A rotational movement of the crank 2 about an axis is translated by the flexible traction means 6 into a vertical up and down movement of the lifting rod 11, the lifting linkage 4 and subsequently the piston 13. In this case, a downward movement takes place due to the weight of the lifting rod 11, lifting linkage 4 and piston 13; an upward movement takes place by the driven crank 2 and the tensile forces transmitted by the flexible traction means 6. To an amplitude of the periodic up-15 and down movement of the lifting linkage 4 and thus of the piston 13, d. H. a working stroke of the reciprocating pump 5, to change or adjust, the crank pin 8 on the crank 2 is radially displaceable and fixable in different positions. In order to achieve a weight balance with the weight of lift rod 4, lifting rod 11 and piston 13, a counterweight 7 is fixed on the crank 20 in the region of a second end of the crank 2. To set a relief torque by the counterweight 7, the counterweight 7 can be fixed at different positions on the crank 2. The rotatably mounted crank 2 is driven by a wheel hub motor 16 via a gear transmission 15 and is mounted on a base plate 29. Electric power generated by photovoltaic solar cells 17 serves to supply power 25 of the wheel hub motor 16. All the components described are mounted on a frame 22, which also carries the base plate 29. Hub motor 16, gear transmission 15 and crank 2 can be protected by a cover 23 from the weather. As an alternative drive, a hand pump lever 18 is provided, with which via a belt 19 and a belt seat 20 on the lifting rod 11, the latter can be placed in a 30 vertical up and down movement. An extension 21 for the hand pump lever 18 can be easily assembled and disassembled. By changing the length of the extension 21, a lever transmission by the hand pump lever 18 can be easily adapted to a depth of the well and to a mass to be lifted (lifting rod 11, lifting rod 4 and piston 13). It should be pointed out that a conversion to manual operation in the device 1 can be done very easily: Once the Kurbelbotzen 8 on the crank 2 in its lowest position and thus the piston 13 are in its bottom dead center, the flexible traction means 6 ensures with a stationary hub motor 16 for an automatic, d. H. independent, 5 decoupling of the engine, the gear transmission 15 and the crank 2 of the lifting rod 11; In this position the crank 2 thus an operative connection between the wheel hub motor 16 and the lifting rod 11 is interrupted and the lifting rod 11 and thus the reciprocating pump 5 is driven by the hand pump lever 18. Thus, a conversion to manual operation can take place without modification or conversion measures. 10

FIG. 2 shows a detailed view of an upper region of a device 1 according to FIG. 1. Mounted on the base plate 29 is the drive unit of the device 1, which comprises the wheel hub motor 16, the crank 2 and the gear transmission 15, comprising two gears 25, 27 , The crank 2 and the gear 25 via a shaft 26 15 are interconnected. In Fig. 3, the same portion of the device 1 is seen from the opposite side. Here, the embodiment of the gear transmission 15 can be seen, through which a translation of a rotational movement of the wheel hub motor 16 in a slower rotational movement of the crank 2 takes place. With the hub motor 16, the smaller gear 27 is connected, which engages in the larger gear 25, which is connected via the shaft 26 with the crank 2 engages. In Fig. 4, the eccentric arrangement of the lifting rod 11 relative to the crank 2 can be seen; for clarity, several components of the device 1 in Figure 25 are omitted. The vertically oriented lifting rod 11 is arranged horizontally relative to the crank 2 such that at a horizontal position of the crank 2, the lifting rod 11 passes in its extension through the center of a slot 28 in the crank 2, which slot 28 of the fixing and radial displacement of the crank pin 8 serves; the lifting rod 11 thus has a normal distance L to an axis of the crank 2 30. If the crank pin 8 is arranged in the middle of the elongated hole 28, therefore, the flexible traction means 6, which connects the crank pin 8 and the receptacle 9 on the lifting rod 11, at a horizontal position of the crank 2, a vertical orientation in extension of the lifting rod eleventh on. In one direction of rotation of the crank 2 according to the indicated arrow is at a

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Lifting movement of the reciprocating pump 5, d. H. during an upward movement of the lifting rod 11, the standing under load flexible traction means 6 substantially vertically aligned. Such an eccentric arrangement of the lifting rod 11 ensures that a degree of 5 transverse forces transmitted by the flexible traction means 6 to the lifting rod 11 is minimized. This in turn means less friction losses and less wear.

5 shows a perspective view of an embodiment of a device 1 according to the invention for conveying well water. Photovoltaic solar cells 17 are mounted on 10 on the frame 22 rotatably mounted, fold-out flaps. The flaps can be folded down for easy and space-saving transport of the device 1. The frame 22 is designed as a welded construction, which can be partially disassembled for transport and / or assembled after transport.

Claims (22)

English:. German: v3.espacenet.com/textdoc? DB = EPODOC & ... PN = EP0385751 Device for conveying liquids, in particular. English:. German: v3.espacenet.com/textdoc? well water, comprising a motor, a crank (2) driven directly or indirectly by the motor 5, a pump tube (3) in which the liquid is conveyed, at least partially guided in the pump tube (3) and by the crank ( 2) indirectly in oscillating vertical movement displaceable lifting linkage (4) and by the lifting linkage (4) driven reciprocating pump (5), characterized in that a flexible traction means (6) is provided, via which the crank (2) the lifting linkage (4) offset in io vertical movement. 2. Device (1) according to claim 1, characterized in that the flexible traction means (6) is designed as at least one belt, preferably made of plastic and / or fabric. 15 3. Device (1) according to claim 1 or 2, characterized in that the crank (2) elongated and on the crank (2) a counterweight (7) is provided. 4. Device (1) according to claim 3, characterized in that the counterweight (7) 20 on the crank (2) can be fixed at different positions and / or radially displaceable. 5. Device (1) according to one of claims 1 to 4, characterized in that on the crank (2) rotatably mounted crank pin (8) is provided which carries the flexible traction means (6) or fixed and which on the crank (2) is radially displaceable 25, so that thereby a working stroke of the reciprocating pump (5) is variable. 6. Device (1) according to one of claims 1 to 5, characterized in that in the region of an upper end of the lifting linkage (4) has a receptacle (9) for the flexible traction means (6) is provided. 30 7. Device (1) according to one of claims 1 to 6, characterized in that the lifting linkage (4) is arranged eccentrically to a rotational axis of the crank (2), in particular such that the lifting linkage (4) during a lifting movement in a 11 It is imaginary extension tangent to a path of a point on the crank (2) runs, which point the flexible traction means (6) leads. 8. Device (1) according to one of claims 1 to 7, characterized in that in an upper region of the lifting linkage (4) at least one guide (10) for the lifting linkage (4) is provided. 9. Device (1) according to one of claims 1 to 8, characterized in that an upper portion of the lifting linkage (4) is designed as a lifting rod (11), which 10 lifting rod (11) more massive than a lower portion of the lifting linkage (4) is made. 10. Device (1) according to one of claims 1 to 9, characterized in that the reciprocating pump (5) a pump cylinder (12) which is connected to the pump tube (3), in the pump cylinder (12) guided piston (13 ) connected to the lift linkage (4) and comprising one or more check valves (14a, 14b). 11. Device (1) according to one of claims 1 to 10, characterized in that a gear transmission (15) between the engine and crank (2) is provided. 20 12. Device (1) according to one of claims 1 to 11, characterized in that a belt transmission between the engine and crank (2) is provided. 13. Device (1) according to one of claims 1 to 12, characterized in that 25 an electric motor, in particular a wheel hub motor (16), is provided as a motor. 14. Device (1) according to one of claims 1 to 13, characterized in that one or more photovoltaic solar cells (17) are provided, which supply the motor with electrical energy. 30 15. Device (1) according to one of claims 1 to 14, characterized in that at least one wind turbine for driving the crank (2) is provided. 12 12 • · · • # «• e * •« «* · · · · · · ··· *« * »* • · · ι ···« * * * · «· * 16. Device (1) according to one of claims 1 to 15, characterized in that a wind turbine and a generator are provided, wherein the wind turbine drives the generator and the generator supplies the engine with electrical energy. 17. Device (1) according to claim 14 or 16, characterized in that an accumulator for storing electrical energy is provided. 18. Device (1) according to one of claims 1 to 17, characterized in that a hand pump lever (18) is provided, with which the lifting linkage (4) 10 is manually driven. 19. Device (1) according to claim 18, characterized in that in a manual operation of the device (1) the flexible traction means (6) decouples the motor or the crank (2) from the lifting linkage (4). 15 20. Device (1) according to claim 18 or 19, characterized in that at least one connecting means, preferably at least one belt (19) on the hand pump lever (18) and a belt receptacle (20) on the lifting linkage (4) are provided via which the hand pump lever (18) to the lifting linkage (4) 20 can be coupled. 21. Device (1) according to any one of claims 18 to 20, characterized in that a removable extension (21) for the hand pump lever (18) is provided. 22. Use of a device (1) according to one of claims 1 to 21 for pumping and conveying groundwater, in particular drinking water, from depths of a few meters to a few hundred meters.