DE9201328U1 - Device for separating and removing paint particles detackified by coagulation from the waste water of paint spray booths - Google Patents

Description

European Patent Attorney

Dipl.-lng. NORBERT W. SEEMANN Patent office:

Patent and civil engineer Brehmstraße

Representative with European certificates D-7320 Göppingen

Tel. 07161-71166 Fax 07161-683529

Telegrams: "Sea patent"

- 1 - G 9203 Ei Se/es

20 January 1992 Applicant:

EISENMANN Maschinenbau KG
(Complementary partner: EISENMANN Foundation)
Tübingen Street 81
7030 B ö b 1 i &eegr; ge &eegr;

Device for separating and removing paint particles detackified by coagulation from the waste water of paint spray booths

The innovation relates to a device according to the generic term of claim 1.

The known state of the art is assumed to be a so-called paint sludge processing device, as is known for example from DE-GM 87 02 677, and whose task should already be seen in a reliable disposal facility.

Kreissparkasse Göppingen (3LZ 61050DCD) Account 4745S3 r>os;<.checkkonto Stuttgart (BLZ 60010070) No. 189103-702

The present innovation is based in principle on this, with the additional task of ensuring a continuous drainage of the floating layer formed from the paint particles, regardless of the current water level or the overflow height in the collecting tank, and thus preventing the drainage pump from running dry.

This task is solved in a surprisingly simple manner by the features of claim 1. The subclaims contain advantageous further developments of the basic idea of the innovation.

The drawing is largely schematic representing an example of the innovation. It shows in detail

Fig. 1 a partial cross-section through a paint sludge collection tank and 20

Fig. 2 is a plan view of Fig. 1.

In these representations, the individual positions have the following meaning:

1 paint sludge tank (waste water) la tank front

2 overflow pockets

2a flat edge

3 pump intake ports

4 Swing flap 4a overflow edge

5 Counterweight

6 Stop
7 cones

8 opening

B Width of the interior of the container

S Floating cover made of paint particles

F Water flow direction.

Description of the innovation:

The device shown is essentially characterized by the fact that a pendulum flap 4, which is freely movable in the direction of the adjacent container front side la, is placed on the upper edge 2a of the overflow pocket 2 as a type of weir, whereby this pendulum flap 4 is also

The side facing the interior of the waste water tank 1 is provided with at least one counterweight 5 together with a stop 6 resting on the upper edge 2a of the overflow pocket 2 in the vertical basic position. In a further structural design, it is also provided that the pendulum flap 4 has a straight or profiled overflow edge 4a and is loosely suspended in the overflow pocket 2 via vertical pins 7 or the like in openings 8 of the flat edge 2a. It is also important in this design that the pendulum flap 4 extends over the entire width B of the waste water tank 1 and is designed with the overflow pocket 2a as a unit so that it can be subsequently installed in existing waste water tanks 1.

As an alternative to the embodiment shown in Fig. 1 and 2, it can also be provided that the overflow pocket 2 (in a manner not shown) has a round cross-section adapted to the diameter of the pump intake nozzle 3, which preferably opens laterally into the container 1.

The device shown in the drawing has the following function:

The paint particles in the spray booth water that have been detackified by coagulants have a tendency to float. This so-called notation is caused by specifically lighter paint particles and air entering the water through washing out in the spray booth. The resulting floating layer "S" is washed to the front of the tank la by the water flow direction "F". An overflow pocket 2 is arranged there with a pump intake pipe 3. If the overflow pocket 2 were designed with a fixed weir, it would be difficult to capture the floating layer and prevent it from building up further.

In the new overflow pocket 2, the weir is suspended as a flap 4. The water level above the weir is set to a maximum of 20 mm and the flow rate of the bypass pump is regulated so that the overflow pocket 2 is drained quickly. If the water level in the overflow pocket 2 falls, the bypass pump would suck in air in the fixed weir and the flow would stop.

At the pendulum weir 4, the weir tilts towards the overflow side la and releases the water inflow, until the overflow pocket 2 is full again and the pendulum weir 4 is thus in balance and swings back into the vertical position.

This new device achieves the following essential things:

l. The floating cover "S" is broken up by the swinging weir 4.

2. It prevents the bypass pump from sucking in air.

3. The water level control in the spray booth tank 1 can be adjusted with a much greater tolerance

work without hindering the drainage of the floating cover.

4. The floating particles are discharged from the spray booth via the shortest route. This prevents solids from being pumped over the

internal pump circuit and then no longer float.

Claims (6)

PROTECTION CLAIMS 1. Device for separating and removing paint particles detackified by coagulation from the waste water of paint spray booths, consisting of a container (1) with an overflow pocket (2) located on the front side (la) of the container in the direction of water flow (F) and a pump intake nozzle (3) opening into this on the bottom side, characterized, Kreissparkasse Göppingen (8L? 61O ¹ SOOOO) Account 4745a.f Postal service account Stuttgart (bank code 60010070) No. 189103-702 that a freely movable pendulum flap (4) is placed on the upper edge (2a) of the overflow pocket (2) as a kind of weir in the direction of the adjacent container front side (la). 2. Device according to claim 1, characterized, that the pendulum flap (4) is provided on its side facing the interior of the waste water tank (1) with at least one counterweight (5) including a stop resting on the upper edge (2a) of the overflow pocket (2) in the vertical basic position (6) is provided. 3. Device according to claims 1 and 2, characterized in that the pendulum flap (4) has a straight or profiled overflow edge (4a) and is loosely suspended in the overflow pocket (2) via vertical pins (7) or the like in openings (8) of the flat edge (2a). 4. Device according to claims 1 to 3, characterized, that the pendulum flap (4) extends over the entire width (B) of the waste water tank (1) 5. Device according to one or more of the preceding claims, characterized, that the overflow pocket (2) (in a manner not shown) has a round, the diameter of the preferred has a cross-section adapted to the pump intake port (3) which opens laterally into the container (1). 6. Device according to the preceding claims, characterized, that the pendulum flap (4) and overflow pocket (2) are designed as a unit to be subsequently installed in existing waste water containers (1).