DE2657779A1 - MULTIPLE PUMP - Google Patents

Description

S / p 8735

SOPRACOLLE UMBERTO, Via Tavagnacco 140, 33100 Udine, Italy Multiple puncture

The present invention relates to a multiple pump for fluids, especially for nutrient fluids and liquids in general.

Various types of liquid pumps are known, e.g. screw pumps, Pumps with eccentric chambers, propeller pumps, centrifuges, etc.

These pumps use the usual plates or pistons attached to the
Strip along the walls of the pump chamber and, especially when used for nutrient fluids, tend to overheat when
the pumps work without the presence of nutrient fluid.

The known pumps are therefore very easily destroyed or lost a lot of wear, which reduces their efficiency. Overheating too can be harmful to certain nutrient fluids.

Account: Bayerische Vereinsbank (BLZ 750 200 73) 5 804 iU ₁ Si Postscheckkonto Munich 893 69 - 801

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Place of jurisdiction is Regsnsburg

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The invention is therefore based on the object of showing a multiple pump, which avoids these disadvantages or to create a piston pump, which does not overheat and which also without the presence of liquid works and also with other similar pumps can be coupled together using a single motor power or a single drive.

To solve this problem, a multiple pump is the one described above Art according to the invention designed so that one or more coupled and independent single pumps, at least one double piston from one Piece and / or at least one single piston and at least one suction and one piston an exhaust valve are provided.

In the invention, it is particularly possible that a single drive, E.g. a single rotating eccentric is used, which operates several pistons or independent Purepen, so that a pump device is realized which simultaneously pump several different liquids can without mixing occurs inside the pump.

In a basic embodiment of the invention, there are two similar single pumps provided that are operated by a single motor power.

Such embodiments provide for the use of two piston pumps, which are formed by a group of pumps with a sliding piston seat, a small pump chamber for the intake of liquids as well a suction port and an outlet port are provided.

These openings are then preferably regulated by two special, soft ball valves, which respond alternately in the suction and discharge phase of the relevant single pump.

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When the pump piston moves to bottom dead center, it occurs inside of the pump body or the pump chamber causes a pressure drop due to the closing of the outlet valve, whereby the inlet or suction valve opens.

In the following ejection phase, exactly the opposite of the previous one occurs Suction phase on When the piston moves to the top dead center, a pressure builds up in the pump chamber, whereby the suction valve closes, when the fluid pressure inside the pump becomes higher than the external fluid pressure, where then the outlet valve opens, which is preferably the same training like the suction valve, but is arranged symmetrically opposite.

The single piston of a pump is preferably long by a single Formed body which is designed such that its two ends each can work as a single piston.

In this way, with a single body or with a single Double piston at the same time two different pumps independent of each other!

work. |

The execution described above allows the formation of a multiple * pump with single pumps arranged in pairs, the number of pump pairs being equal to the number of bodies or double pistons after each double piston consisting of one body at the same time as two Single piston can work

A review of this solution has shown that it reduces damage and at the same time the use of a drive motor with relatively low power is possible.

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forces are reduced.

If now the two single pumps for pumping the liquid at the same time can be used and if so, then a single pump, possibly in their performance decreases, for example because of a leak in the piston or because of a break in the return spring, the parallel pump body resp. the parallel pump delivers without the user having to replace the damaged part immediately.

The reverse is true in the case of the implementation of a type of pump with an or several individual pumps (even or odd number) - still according to a preferred embodiment of the present invention - a piston pump or in each case a pump piston is provided which has a device at the other end which is suitable for the power transmission from the end of a drive shaft for actuating the pump piston.

Such a solution realizes a single single pump, preferably operated by the aforementioned eccentric.

This is preferably on the individual pump or the pump chamber remote end of the piston or the piston rod a ball or other suitable means is provided, which then comes into contact with the eccentric stands.

The use of a return spring allows energy to be recovered out of the piston when the eccentric moves from the largest to the lesser; steering has returned.

In this way, the eccentric pushes the piston rod forward immediately to top dead center, with the piston then subsequently by the Spring, which is preferably on the side facing away from the pump chamber

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Piston rod or the piston is provided, guided on this eccentric or is slid back to the bottom dead center. In this way it becomes possible to have a complete working cycle with suction and To realize ejection, as is also the case with the previously described embodiment, but it is the case with the latter Embodiment is possible to provide or operate an even or odd number of individual pumps.

Of course, it is also possible to use the preferred first embodiment mentioned, i.e. the embodiment with at least one double piston, with the mentioned preferred second embodiment, i.e. with at least one Single piston, to be combined ^ making it possible to use a multiple pump to be realized with one or more independent pistons and with just a single drive.

These pumps can be used with different fluids or liquids and can be used with different capacities.

They work without the direct presence of liquid or fluid and without any overpressure. To support the transmission of motion from the eccentric to the piston (s) and instead of the Eccentric, of course, other similar means can also be used.

A conventional electric motor, for example, serves as the drive.

Two embodiments of the invention are as preferred examples without Restriction with respect to other forms shown in the accompanying drawings. Show it:

Fig. 1 in section two pumps working in push-pull with one-piece Piston and with a drive eccentric;

7 0 9 8 'j L / ο 2 8 1

Fig. 2 is a side sectional view of the coupling of the eccentric

the shaft of a drive motor;
3 shows a sectional view of two operated by a common eccentric

Single pumps

In the figures, the pump system is shown coupled, in the case of the first solution with a one-piece piston and oppositely arranged pump bodies · In the case of the second solution are opposite arranged groups with individual units directly driven by the eccentric piston shown.

In the first embodiment, 1.S and 1.0 are the opposite arranged pump body referred to, which for example each have an outlet valve 1.M and a suction valve 1.A. The outlet valve and the inlet or suction valve are each designed the same, but fastened differently in order to design the alternating suction and discharge of the fluid or the liquid.

The inlet and outlet body of the passage of the ball valve 2 is formed by a cylinder in a T-shape. He has a mean axial ,, non-through bore and a cross connection to allow the flow of fluid from the walls to the cylinder piston and on the other hand to detect the ball 3, which serves to interrupt the flow of the fluid or the liquid. The ball will actuated by a spring according to the internal or external overpressure 5, which presses this ball against an annular seal 4.

In this way the valve fulfills its opening and closing tasks

. for the fluid flow due to the contact of the valve ball 3 with ι
the associated seat or the associated ring seal 4.

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The piston 6 is arranged in the center of the pump and is a one-piece body. It slides inside the pump and is sealed by a sealing washer 7 of the main seal, which is secured by a flexible ring seal 10 is secured.

On the one-piece body piston 6 are in the middle The piston crown disks 9 are applied in the area, which are acted upon by the impacts emitted by the eccentric 11. The piston crown disks 9 are secured by flexible rings 8.

The piston body 6 is made in one piece, and a continuation on the other end as a piston and, therefore, acts both in the pump and in the pump 1.S ID Both the piston 6, and $ 6.D serving ends of the body 6 are the Eccentric 11 or actuated push-pull by the drive int push-pull arranged between the two pumps, namely by the pushing or pushing movement which is exerted on the corresponding piston head disk 9.

The anchoring of the motor shaft 12 on the eccentric 11 takes place, as shown in FIG Fig. 2 can be seen by the usual locking or fastening means. '

The piston head disks 9 and / or the eccentric 11 can be made of plastic, in order to avoid major problems with lubrication.

This type of pump is permitted with two single pistons made of one piece This enables the use of a single drive source which alternately actuates the individual pistons 6.S and 6.D without the use of special ones Means for return, as shown in Fig. 3 (softer Return plate or container 13, return spring 15, stop ring 16,

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Sliding ball 17 and plug 14, which serves to close the pump chamber).

It is also possible in the first embodiment according to FIG. 1, where the two individual pistons consist of one piece, making the pump body very small, while the pump body in the embodiment 3 are relatively long in order to obtain a guide for absorbing radial forces or vibrations.

In the second, illustrated embodiment, a type of pump is shown, in which two individual pumps are provided with corresponding individual pistons which are actuated by a single drive.

In this embodiment, the impact or the sliding movement is in front of the eccentric the piston is effected in the direction of impact, while the return of the piston is effected by the springs 15 which are compressed (during the impact).

The multiple pump system works as follows, it being noted that the circuit of a single pump is of course equivalent to several pumps coupled with a single drive: '.

In the inlet section the pump has the normally closed suction valve · Successively in any period of the piston ■ inside the pump a sufficiently large pressure reduction for suction , the fluid * or the liquid is generated via the suction valve 1.A. ^;

There is then fluid or fluid inside the pump chamber.

Liquid, so that the piston, which moves from the position of the lower dead, point to top dead center, a pressure moves inside the chamber ■ generated, which removes the valve ball of the exhaust valve from its seat or the force of the spring in question overcomes the outlet

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valve closes or attempts to close. The suction valve is at the same time closed.

After the piston has reached top dead center is the fluid Flowed through the outlet valve and the cycle begins from new.

Of course, the invention is not restricted to the exemplary embodiments described above. Rather, based on this, other forms and other modes of practicing the invention can be envisaged. In particular, the embodiments can generally be modified without that this leaves the basic idea of the invention as described above and as claimed below.

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Claims (11)

Claims \ 1.jMultiple pump for fluids, in particular for nutrient fluids and liquids in general, characterized in that one or
several coupled and independent single pumps, at least one
One-piece double piston and / or at least one single piston
and at least one suction valve and one outlet valve are provided, and that the drive is rotationally with a resulting reciprocating movement. 2. Multiple pump according to claim l _f, characterized in that the valves have balls (3) and / or cones, which are each biased by at least one spring (5) and / or with a valve seat (4) preferably 'cooperate with rubber . 3. Multiple pump according to claim 1 or 2, characterized in that the ■ Ooppelkolben (6) with two piston head disks (9) preferably made of ■ plastic or the like. Is provided, which is narrow on the piston body (6.S, 6.D); leave, attached or recessed on the body of the double piston
are. 4. Multiple pump according to one of claims 1 to 3, characterized in that that the closing and opening of the valves are controlled by the flow of the current "! means in the respective inlets and outlets ^ in which the ven-; tile are arranged, regulated. 5. Multiple pump according to one of claims 1 to 4, characterized in that that the pump consists of several integral Ooppelkolben or several ! each individual piston assembled to form a double piston straight, number is assembled. 709834/0281 -Jt- 6. Multiple pump according to one of claims 1 to 5, characterized in that that the Puiipe of one or more pump bodies with one each Single piston and is formed with a return arrangement for the single piston. 7. Multiple pump according to claim 6, characterized in that the pump is composed of an even or odd number of individual pumps. 8. Multiple pump according to one of claims 1 to 7, characterized in that pumps with one-piece double piston and / or with single piston are coupled together and operated by a single drive source; are. \ 9. Multiple pump according to one of claims 1 to 8, characterized ^ that the reciprocating movement impressed on the piston is ^{effected by an eccentric 1} or by a cam. j 10. Multiple pump according to one of claims 1 to 9, characterized in that that the transmission of a rotating movement of a drive element Is achieved in a reciprocating movement with the aid of a crank, a linkage or the like. 11. Multiple pump according to any one of claims 1 to 10, characterized by their use for coffee machines or automatic dispensing equipment for beverages 709834/0281