Title: Plant for the recovery of slaughtered animal blood

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Claims: What I claim is:

1. A plant for recovering blood from slaughter animals, comprising:

at least one stabbing knife;

a vacuum bloodtube having one end connected to and in communication with said stabbing knife, a metering apparatus connected to and communicating with said stabbing knife, said metering apparatus including a pneumatic metering pump for metering an anticoagulant into the blood through said stabbing knife, an impulse generator coupled to said metering pump and operated from the knife for actuating said metering pump;

a central vacuum container connected to the other end of said bloodtube;

a remote-controlled shutoff valve connected to said bloodtube for connecting and disconnecting said bloodtube with said container;

an injector arranged on the container for connecting a source of pressurized air to said container whereby blood is sucked to the container by the vacuum produced thereby;

and a pneumatic membrane pump connected between said container and a heat exchanger for cooling the blood, and a collector for the final collection of the blood.

2. A plant according to claim 1 characterized in that the vacuum container includes a level switch which is pneumatically controlled by a second impulse generator for controlling the dispensation of blood from said vacuum container.

3. A plant according to claim 1, characterized in that the vacuum container includes a filtering device by means of which the blood is given a cyclonal movement whereby undesired particles such as glands, hair etc. are separated.

4. A plant according to claim 1, characterized in that said impulse generator is manually operated and includes indicator means for indicating the time when a dosage of the anticoagulant can take place.

5. A plant according to claim 1, characterized in that the remote-controlled valve is coupled in series with the metering pump.

6. A plant according to claim 1, characterized in that the stabbing knife has a suction cup surrounding the blade of said knife for holding said knife against the slaughtered animal by means of a vacuum, the suction cup vacuum being created via a separate vacuum tube where vacuum is created by a separate injector for connection to a source of pressurized air which is also controlled by said metering pump.

7. A plant according to claim 6, characterized in that the part of the knife introduced into the slaughtered animal has a rear portion of romboid cross-section and a forward portion which is essentially flat.

8. A plant according to claim 7, characterized in that the knife blade has a cut out at the end of the flat knife blade portion that connects with the romboid cross-section portion.

Other info:

Inventors: Ekdahl, per Anders Gosta (S-244 00 Kavlinge, SW)

Application Number: 486092
Filing Date: 1974-07-05
Publication_date: 1976-04-06
Assignee:
Primary Class(es): 452/68 452/69
Other Classes:
US Patent Ref:

3512517	Nov, 1964	Kadish et al.	128/DIG.
3610226	Oct, 1971	Albisser	128/2.
3649996	Aug, 1970	Marti	17/1.
3857137	Dec, 1972	Baud	17/1.

Other Refs: 186,8002,261,931247,066681,973

Oct, 1963	SW.
Dec, 1972	DT.
Nov, 1969	SU
Oct, 1952	UK

Primary Examiner: Mancene, Louis G.
Assistant Examiner: Hamilton, James D.
Attorney: