ES1289990U - HYDRAULIC PUMP (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Hydraulic pump, characterized by understanding a deposit (1) that lacks moving parts inside and understanding: - A lower mouth (11) of water inlet, provided with an anti -background valve (2); - A first upper mouth (12) connected to a mouth (31) of a 3/2 pneumatic valve (3) operated by a cyclic timer (4) and that, depending on its position, communicates the interior of the tank (1) with an air outlet (32) abroad, or with an input (33) of air at pressure connected to an external source of pressure supply, - A second upper (13) water -to -pressure outlets provided with an anti -background valve (5) and, - An inner tube (14) with a first end close to the bottom of the tank and a second end connected to said second upper mouth (13). (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

Hydraulic pump

Technical sector

The present invention refers to a hydraulic pump applicable in the sector dedicated to the manufacture of pumps for the impulsion of liquids.

State of the prior art

There are currently different hydraulic pumps on the market, such as: gear pumps, piston pumps, vane pumps and screw pumps. All of them have the particularity of comprising a body provided with an inlet mouth and a liquid outlet mouth, between which a mobile element is arranged that, by means of a rotational movement or a linear movement, propels the incoming liquid towards the mouth of the liquid. output by increasing its pressure.

The incorporation of these mobile elements inside the body of the pump requires the use of sealing elements that prevent fluid leaks to the outside, performing precise machining for the assembly of the different components, which considerably increases the cost of manufacturing the pump. pump, and regular maintenance to replace worn moving parts.

Therefore, the technical problem that arises is the development of a hydraulic pump with greater constructive simplicity, low cost and that does not require maintenance.

The applicant for the invention is unaware of the existence in the state of the art of hydraulic pumps that solve the technical problem posed and that have technical characteristics analogous to those of the hydraulic pump of the present invention.

Explanation of the invention

The hydraulic pump object of the present invention has technical characteristics that allow solving the technical problem posed.

To do this, the hydraulic pump object of this invention comprises a tank that has no moving parts inside and that comprises: a lower water inlet mouth provided with a non-return valve; a first upper mouth provided with a 3/2 pneumatic valve activated by a cyclic timer and which, depending on its position, connects the inside of the tank with an air outlet to the outside or with a pressurized air inlet; a second upper mouth for the outlet of pressurized water provided with a non-return valve, and an inner tube with a first end close to the bottom of the tank and a second end connected to said second upper mouth.

It is worth mentioning that the aforementioned cyclical timer can be electric or pneumatic, since this does not vary the operation of the hydraulic pump.

With the aforementioned characteristics, this hydraulic pump is pneumatically actuated and lacks moving parts inside and other usual elements in hydraulic pumps such as diaphragms, mechanical seals, turbine and electric motor, which greatly simplifies its manufacture as it allows certain tolerances. high, reduces the final cost of the pump and eliminates maintenance tasks.

Another relevant advantage with respect to the existing hydraulic pumps in the state of the art and that can be damaged if they run out of water supply, is that this hydraulic pump is not negatively affected by running out of water, precisely because it lacks moving elements in its inside.

The water supplied to the tank through its lower mouth can come from any supply source, it being necessary only for it to have sufficient pressure to fill the tank.

The pneumatic valve is of the 3/2 type, which indicates that it has three inputs and two positions; specifically: an inlet connected to the first upper mouth of the tank and the other two connected respectively to the outlet to the outside and to the inlet of pressurized air from an external supply source, for example a compressor or a pressurized bottle; communicating the inlet connected to the tank with the outlet to the outside when the 3/2 pneumatic valve is in a first position, and with the inlet of pressurized air when it is in a second position.

When the cyclic timer places the 3/2 pneumatic valve in the position that connects the interior of the tank with the outlet to the outside, the water enters through the lower mouth of the tank and, as it fills, it displaces the air contained in the tank to the outside, through the aforementioned 3/2 pneumatic valve.

When the cyclic timer changes the position of the valve, connecting the inside of the tank with the pressurized air inlet, the pressurized air from an external source pressurizes the inside of the tank and the water contained in said tank comes out under pressure through of the non-return valve of the second upper mouth of the tank. This is the only possible outlet for the pressurized water, since the non-return valve located at the bottom of the tank prevents it from leaving through said lower mouth.

The described operation of filling the tank with the water that enters through the lower mouth of the tank and exit of pressurized water through the second upper mouth of the tank is repeated successively as the cyclic timer causes the change in position of valve 3 /2 pneumatic; provided water and pressurized air supplies are maintained.

It should also be mentioned that, instead of water and compressed air, this hydraulic pump can work with other liquids of different densities and with other inert, compressed or pressurized gases, since this does not affect the essence of the invention.

Brief description of the content of the drawings.

To complement the description that is being made and in order to facilitate the understanding of the characteristics of the invention, a set of drawings is attached to this specification in which, for illustrative and non-limiting purposes, the following has been represented:

- Figure 1 shows a schematic view of an embodiment of the hydraulic pump object of this invention, with the 3/2 pneumatic valve in a first position, in which the water to be pressurized enters the interior of the pump. tank and the outlet of the air contained inside it through the 3/2 pneumatic valve.

- Figure 2 shows a schematic view of the hydraulic pump of figure 1, with the pneumatic valve 3/2 in a second position in which pressurized air enters through said pneumatic valve 3/2 into the tank and pressurized water exits through the second upper mouth of said Deposit.

Detailed exposition of embodiments of the invention.

As can be seen in the example of embodiment shown in the attached figures, the hydraulic pump comprises a reservoir (1) comprising a lower mouth (11), a first upper mouth (12) and a second upper mouth (13).

The lower mouth (11) for the water inlet is provided with a non-return valve (2) that prevents the exit of water through said lower mouth (11).

The first upper mouth (12) is provided with a 3/2 pneumatic valve (3), with three inputs and two positions, activated by a cyclic timer (4).

The second upper mouth (13) for the outlet of pressurized water is provided with a non-return valve (5) and connected to an inner tube (14) that has a first end close to the bottom of the tank (1) and a second end connected to said second upper mouth (13).

Said 3/2 pneumatic valve (3) has a mouth (31) connected to the first upper mouth of the tank (1), an air outlet (32) to the outside, and a pressurized air inlet (33) connected to a external source of pressurized air supply, represented in the attached figures by a compressor (6).

The cyclic timer (4) sets the 3/2 pneumatic valve (3) alternately in a position, shown in figure 1, in which it communicates the inside of the tank (1) with an outlet (32) of air to the outside, and in a second position, represented in figure 2, in which the inside of the tank (1) communicates with the pressurized air inlet (33).

When the cyclic timer (4) sets the 3/2 pneumatic valve (3) in the first position shown in figure 1, the water enters the tank (1) through the lower mouth (11) and the air contained in the tank ( 1) is displaced and expelled to the outside through the first upper mouth (12).

When the cyclical timer (4) changes the position of the pneumatic 3/2 valve (3), and places it in the second position shown in figure 2, pressurized air enters through the first upper mouth (12) and the outlet of pressurized water through the second upper mouth (13) of the tank (1).

Once the nature of the invention has been sufficiently described, as well as a preferred embodiment, it is stated for the appropriate purposes that the materials, shape, size and arrangement of the elements described may be modified, as long as this does not imply an alteration of the essential characteristics of the invention that are claimed below.

Claims (1)

1. Hydraulic pump, characterized in that it comprises a tank (1) that has no moving parts inside and that comprises: - a lower mouth (11) for water inlet, provided with a non-return valve (2); - a first upper port (12) connected to a port (31) of a 3/2 pneumatic valve (3) activated by a cyclic timer (4) and which, depending on its position, communicates inside the tank (1) with an air outlet (32) to the outside, or with a pressurized air inlet (33) connected to an external source of pressurized air supply, - a second upper mouth (13) for the outlet of pressurized water provided with a non-return valve (5) and, - an inner tube (14) with a first end close to the bottom of the tank and a second end connected to said second upper mouth (13).