FI74688C - Device for preventing outflow, especially in a so-called farmarb e holder. - Google Patents

Description

· Λ§ & * · \ ANNOUNCEMENT

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SUOMI FINLAND

(Fl) (21) Patent application - Pateniansökning 773989 (22) Filing date - Arisokmngsdag 31.12.77

National Board of Patents and Registration (23) Start date - Giltighetsdag 31.12.77

Patent- and registration registers (41) Tullut) ulklsok5, ...

Blivit 1 ittnntliy Q 1 .07.79 (44) Date of sight and display date - 30 1 1 87

Ansökan ntiagd och nti r.krilten publicerad '' / (86) Kv application s - tnt n tk / in (32) (33) (31) Pyydfllv (Mijtj'kfni'i - BfMjnrii priori! »?! (71) Farmtools Oy, Sinikel1onpolku, 01300 Vantaa, Finland-Finland (FI) (72) Lauri Perämäki, Ala-Hella, Finland-Finland (FI) (7 * 0 Berggren Oy Ab (54) Device for preventing lap flow, especially in the so-called farm tank av utströmning särskilt vid en sk fa rma rbehä11 a re

The present invention relates to a device for preventing the flow of taps, in particular for so-called fuels, such as fuel oil. through the intake hose of the farm container, the hose being connected to a pump mounted above the container so that the hose itself or the pump connection pipe for connecting it is directed upwards after the pump and in addition there is a possibility for air to enter this upwardly directed part.

Such a device is already known on the basis of Finnish patent application 76 0762. In this known device, an upwardly directed hose connecting pipe after the pump is provided with a non-return valve for closing the fuel when the fuel is pumped into the connecting pipe and reopening when the pumping pressure disappears, so that the connection to the outside air causes the hose to drain and no more liquid to drain from the tank. . However, practice has shown that the disadvantage of this known device is that the non-return valve does not always work satisfactorily, especially in winter, when the fuel oil is quite poorly flowing and often the so-called summer quality oil. Improper operation of the non-return valve can either result in the blade flow not being blocked or cause oil to leak through the valve when pumping.

2 74688

The object of the present invention is to obviate these drawbacks, and in order to achieve this, the invention is characterized by what is stated in the appended claim.

The invention will now be described in more detail by way of example with reference to the accompanying drawing, which shows an embodiment of a device according to the invention.

Tank 1 is only partially shown and may be a standard farm fuel oil tank. the oil is pumped from the tank by means of a pump 3 with a riser 2 and an inlet hose connection pipe 4. The pump handle may be lockable but generally the hose 8 connected to the pipe 4 cannot be locked. In order to prevent the flap flow through the hose 8, according to the invention, a thinner return hose 6 is connected to the pipe 4 at point 5, which leads back to the tank. In the example case, the hose 6 is connected to the vertical aeration pipe 7 of the tank, but it can of course also lead directly down to the tank 1.

When no longer pumping, the excess oil flows back into the tank, and the flap flow can no longer take place even if the outlet end of the hose 8, which is not shown, passes below the liquid surface in the tank.

Claims (2)

3,74688 Patent claims 1. Anordning förhindrande av utströmning genom hä-vertverkan genom en uttagsslang vid en särskilt för bränslen, sasom brännolja avsedd s.k. farm1 are (1), varvid slan-gen anslutits account en ovanom behällaren fästad pump (3) sä, att själva slangen eller et för anslutning av denset avslutningsrör (4) efter pumpen är riktat uppat, och varvid därutöver anordnats en mö for the airfoil account for the uptake of the air conditioner, the air conditioner for the air conditioner (4) for the air conditioner (6) förbindel-se med behällarens (1) luftutrymme ovanom vätskenevä. 1. A device 1 for preventing the flow of acid, in particular for so-called fuels, such as fuel oil. via the inlet hose of the farm container (1), the hose being connected to a pump (3) mounted above the container so that the hose itself or the pump connection pipe (4) for connecting it is directed upwards after the pump, and further provided with air access directed part, characterized in that this air inlet is arranged by connecting (5) to said part a continuously open pipe or hose (6) considerably narrower than the connecting pipe (4), which communicates with the air space of the tank (1) above the liquid surface. Device according to claim 1, wherein the container (1) comprises an upwardly directed pipe or the like through which the interior of the container communicates with the ambient air for pressure equalization, characterized in that said narrower pipe or hose (6) is connected to this pressure equalizing pipe. 2. Anording enligt patentkravet 1, varvid behällaren (1) omfattar ett uppät sigä rande rörer or dlikt, via vil-ket hulllarens inre stär and förbindelse med omvivningsluften i och för trickutjämning, kännetecknad av at sagda klenare r 11 detta tryckutjämningsrör.