DE202019000466U1 - Self-closing valve for rotary pumps - Google Patents

Abstract

By means of a piston 1, 1 'operable pump valve arranged in a particular metallic or plastic valve body 3, in the flow direction of the water closing valve element 2, 2', with a valve spring 4, which at one end on the valve element 2, 2 'which in turn supported on a spring abutment 10, which is detachably connected to the valve body 3 and the other end supported on the valve body 3, wherein the valve body 3 and the spring abutment 10 together form a water chamber 8 to the valve spring 4 and wherein provided in the valve body 3, a supply of water is. According to the invention, the valve element 2, 2 'when opened by an axially displaceable piston 1, 1', which is guided in a preferably cylindrical body of the pump housing 7 and is provided with an inclined surface which the valve element 2, 2 'in an angled to the valve element axis skew presses, so that the sealing part of the valve element 2, 2 'only selectively supported on the seal 5 and the opposite sealing surface of the valve element 2, 2' adjusted by the seal 5 and there allows the flow through the water.

Description

The invention relates to a valve actuatable by means of a piston for rotary pumps.

Rotary pumps are typically manually operated suction pumps, with which water from underlying containers or natural groundwater reservoirs can be sucked. At each stroke, a piston in a cylinder moves up or down. During the upward movement, a negative pressure is generated by which the liquid is conveyed upwards.

However, many rotary pumps are now also used in public places of towns or communities or playgrounds. Since in most of these places there is no groundwater reservoir in reachable depths or it is not justifiable to install a reservoir or cistern with a high financial outlay and this would have to be filled regularly even with increased technical effort, a rotary pump can be fitted with one so-called self-closing valve directly to a pressurized drinking water line.

This has the great advantage that the aforementioned technical aids (container or cistern) are not necessary. Self-closing valves generally open when the pump lever is raised and held and close as soon as the lever is released, causing the piston in the pump cylinder to rise again.

However, known self-closing valves also have problems in handling, especially when used with pumps that are used in playgrounds, since these already known valves for valve opening require a lot of effort, the children can not sometimes apply. If you want to reduce this force, the line pressure of the drinking water pipe, which is present at the valve in turn must be reduced by technical aids such as pressure reducer. This is mainly due to the fact that the opening of the valve valve closing valve element must be adjusted axially against the flow direction of the water and against the upcoming water line pressure.

The invention has for its object to propose a valve which overcomes these problems, in particular by the fact that it is operated with little effort of children and it can be used regardless of the upcoming fluid pressure of the Tinkwasserleitung. Due to the balance of forces of this construction to be protected, more precisely, the leverage of pistons, in particular the inclined surface of the piston and the construction of the valve results in a low opening resistance, more precisely a little effort to use valve or rotary pump, which also with high line pressures can be used.

Advantages, features and details of the invention will become apparent from the following description of a preferred embodiment and from the drawing.

• 1 zeigt eine Schnittdarstellung eines Selbstschlussventils. Dieses umfasst einen als mehrstufige Hülse ausgebildeten, metallischen, vorzugsweise aus Messing hergestellten, Ventilkörper 3 mit einem äußeren Gewinde 9 zum Einschrauben in eine angedeutete Schwengelpumpe 7. Außen auf dem Ventilkörper 3 sitzten eine Unterlegscheibe 13 und eine Dichtung 11 zur Abdichtung gegenüber einem Wasserzulauf von außen und einem Wasseraustritt von gebildeter Wasserkammer 8 zwischen Federwiderlager 10 und Ventilkörper 3.

This shows in 2 a representation of an embodiment of a trained according to the concept of the invention self-closing valve with piston, wherein in 1 different switching positions are indicated.

• 1 shows a sectional view of a self-closing valve. This comprises a designed as a multi-stage sleeve, metallic, preferably made of brass, valve body 3 with an external thread 9 for screwing into an indicated rotary pump 7 , Outside on the valve body 3 sat a washer 13 and a seal 11 for sealing against a water inlet from the outside and a water outlet of formed water chamber 8th between spring abutment 10 and valve body 3 ,

In the valve body is a valve element 2 . 2 ' of metal, in particular rustproof, in particular stainless steel, which is mounted on a cylindrical, flat seal 5 rests and in a closed condition does not allow water to pass. On the drawing level above end face of the valve element is in the assembled, closed state, a piston 1 . 1' on, which is pressurizable by a person using the pump.

The piston 1 . 1' is partially made so that a channel results, through which the water can flow. Likewise, this piston has 1 . 1' an angled to the axial plane side or surface with the use of the pump, the valve element 2 . 2 ' first on the front side and then guided along the outer surface and thus assumes an angular position to the axis, which leads to the opening of the valve.

Axial between the valve element 2 . 2 ' and the valve body is a valve spring 4 clamped. This pushes the valve element 2 . 2 ' in the drawing plane up, so the sealing surface of the valve element 2 . 2 ' against the seal 5 and the seal 5 against the spring abutment 10 , The valve body 3 and the spring abutment 10 form a water chamber 8th around the seal.

The inflow of water from the water inlet into the water chamber via a central opening in the valve body, which with a thread 9 is provided around a water pipe 6 releasably connect.

In the closed valve state is the valve element 2 . 2 ' and the piston 1 . 1' with the reference number 2 ' or. 1' characterized.

To replace the valve element 2 . 2 ' and / or the seals 5 . 11 and / or the valve spring 4 just need the spring abutment 10 be unscrewed, whereupon the aforementioned elements axially in the plane of the drawing upwards from the valve body 3 , supported by the spring force of the valve spring 4 , removed and replaced by functional elements.

LIST OF REFERENCE NUMBERS

1

piston

1'

piston

2

valve element

2 '

Ventilelemen

3

valve body

4

valve spring

5

poetry

6

water pipe

7

pump housing

8th

water chamber

9

thread

10

Spring abutment

11

poetry

12

thread

13

washer

Claims (1)

By means of a piston 1, 1 'operable pump valve arranged in a particular metallic or plastic valve body 3, in the flow direction of the water closing valve element 2, 2', with a valve spring 4, which at one end on the valve element 2, 2 'which in turn supported on a spring abutment 10, which is detachably connected to the valve body 3 and the other end supported on the valve body 3, wherein the valve body 3 and the spring abutment 10 together form a water chamber 8 to the valve spring 4 and wherein provided in the valve body 3, a supply of water is. According to the invention, the valve element 2, 2 'when opened by an axially displaceable piston 1, 1', which is guided in a preferably cylindrical body of the pump housing 7 and is provided with an inclined surface which the valve element 2, 2 'in an angled to the valve element axis skew presses, so that the sealing part of the valve element 2, 2 'only selectively supported on the seal 5 and the opposite sealing surface of the valve element 2, 2' adjusted by the seal 5 and there allows the flow through the water.

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