DE2137437B2 - DEVICE FOR COMPOSTING MUELL - Google Patents

Description

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The invention relates to a device for composting of crushed garbage stored in the open space in the form of compost heaps pulsed ventilation, consisting of holes laid on the bottom of the compost heaps Ventilation pipes connected to a compressor that can be switched to suction or pressure mode

Such a facility is through the DT-AS 15 92 729 known. You need a pump with a very high throughput capacity, since on the other hand neither one intermittent ventilation, nor an air flow that encompasses the compost pile in its entirety can be. By dividing the air flow to be conveyed into several smaller, parallel switched pump units achieve the desired spontaneity and the necessary high delivery volume will. However, the size of the pumping systems results in very high investment costs. About that In addition, the puffs are subject to relatively high wear and tear, as the intermittent ventilation in the Suction operation liquid fractions are carried away up to the pump and there to the gradual destruction of the Guide pump blades.

It is also known from DT-PS 10 13 300, periodically or constantly air into the interior of the rent to be blown in such a way that stagnant gases from the rent are drowned from the inside out. Here the ventilation is carried out by a fan that is connected directly to the ventilation pipe. In the case of the impulsive Ventilation results in the same disadvantages, <«> as stated above. Also in the case of DT-PS 5 46 074 and the OE-PS 4 66 883, the fan is connected directly to the ventilation pipes.

Proceeding from this, the object of the present invention is to provide a device in which <>; on the one hand the desired intermittent, periodic aeration may be maintained at the other hand, the investment costs for the purchase of the ^le oie features of claim 2 allow AteseTdes in traction mitangesaugten Kondensa.es from the storage vessel _significant

= 2?

HeelUs negative pressure, on the other hand positive pressure generated

^{W <} 5? Ri £ Sung is explained in more detail below using an exemplary embodiment shown in the drawing;

Idas line scheme and
di Panlage with the

Storage boilers

chosen that at the beginning of the tube 2 eii Distance between individual holes 3 is, which decreases towards the end of the tube against Clogging the holes 3, the tubes 2 can be secured, for example, that they with Filter material are covered. The individual pipes 2 are connected to a common collecting line 4, which is connected to a pulsating vacuum system 5 At the entrance of the vacuum system 5 there is a controlled valve 6 which opens at an adjustable maximum negative pressure and at a minimal negative pressure closes.

The vacuum system S shown in Figure 2 has a number of series-connected boilers 7, which via a line 8 and a line 9 with the Suction side of a compressor 10 are connected. Furthermore, there is 10 on the pressure side of the compressor

an output line 11. The pressure side of the compressor 10 is connected to the line 8 via a pressure line 12. In a line 13 arranged parallel to lines 8 and 9, there is a vacuum pump 14 as well as a filter and silencer! 5. There are also shut-off valves 16, 17, 18, 19 and 20 in lines 13, 9, 12 and 11.

The compost heaps are normally ventilated 1 by suction air, first of all the valve 3, which is a specially controlled solenoid valve can act is closed until in the storage boilers a certain negative pressure prevails, the valve 6 then opening and thus ventilation of the individual Compost rent 1 takes place until the pressure in the boilers has risen so far that the valve 6 again closes so that the system can recharge accordingly. During this process, the valves 16, 17 and 19 closed while valves 18 and 20 are open. Should the compressor 10 the individual Pressurize pipes in the reverse process, then valves 18 and 20 closed while valves 17 and 19 are open. If for any reason the compressor 10 fail, then the function can be taken over directly by the vacuum pump 14, whereby the Valve 16 is opened while the other valves 17

until 20 are closed.

The lower floors of the individual storage boilers 7 are connected to a common condensate water line 21 connected, which has a controlled shut-off valve 22 at its end, which then always opens when the compressor 10 or the vacuum pump 14 are switched off.

The reference numeral 23 indicates an electrical control which can be provided to to be able to adapt the system fully automatically to the conversion process, with an increased need for oxygen, especially in the initial stage of composting is given, while at the end of this process this need decreases. Accordingly, in particular the valve 6 can be controlled, which remains in the closed position for certain time intervals, even when the system is charged to the necessary negative pressure.

As a result of the biological conversion process, the gases to be extracted have a certain temperature and have to be cooled to a particularly high precipitation of the vapors in the form of To achieve condensation water, the boiler 7 acting as a cooler due to the expansion of the gases and one can also cool the boiler with the help of cooling fans 24.

For this purpose 2 sheets of drawings

Claims (3)

Claims: can be. Out of work mode enabled 1. Device for composting "." Stored on open land in the form of compost heaps shredded garbage through pulsed ventilation, consisting of at the bottom of the Kcmpost rent laid ventilation pipes provided with holes, which are connected to a suction or pressure operation switchable compressor are connected, that ι ο characterized in that between the Compressor (10) and the ventilation pipes (2) several storage boilers connected in series (7) are arranged and between the ventilation pipes (2) and the storage tanks (7) a ι $ Control valve (6) is located. 2. Apparatus according to claim 11, characterized in that each storage tank (7) is connected at its bottom to a common condensation water line (21) which has a zo-controlled shut-off valve (22) at its end. 3. Apparatus according to claim 1 and 2, characterized in that the compressor side Storage tank connection through valves (17 to 20) between the suction and pressure side of the Compressor (10) is switchable w _d Jj ₆₅₆ giving up thereby According to the invention w.rda.e 6 ^ solved by J _p ^{w 'SC} _w ^h _{e r} ^{e n} _h ere Wnteieiiander en several ^ ^^ ^ switched Belüftungsroh will. _ · _D According to the invention w.rd dß J ^w ' ^SChen