FI68942B - VENTIL SOM GER STEGLOES REGLERING OCH PULSERINGSFRI STROEMNINGVID UTSLAEPPNING AV MJOELK FRAON GASUTSKILJAREN I EN ROER MJELKNINGSINGSORDORDNING MED DUBBEL VAKUUMSYSTEM - Google Patents

Description

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C (45) ?: ·,! - ritti 't; /] J 12 1935 / Patent ceddelat (51) Kv.lk.4 / lnt.CI.4 A 01 J 7/00 FINLAND —FINLAND (21) Patent application - Patentansökning 790062 (22) Application date— Ansökningsdag 09.01.79 (F ») (23) Starting date - Giltighetsdag 09.01.79 (41) Has become public - Blivit offentllg 12.07 * 79

National Board of Patents and Registration / 44) Date of publication. - 30.08.85

Patent * och registerstyrelsen '' Ansökan utlagd och utl.skriften publlcerad (32) (33) (31) Requested priority - Begird priority 11.01.78 Norway-Norway (NO) 780092 (71) Landbrukstekn isk Institutt, Postboks 65, N -1 + ^ 32. Äs-NLH, Norway-Norge (NO) (72) Kare Time, Äs, Norway-Norge (NO) (7/4) Oy Heinänen Ab (51 ») Valve that provides stepless control and impulse-free flow when releasing milk from a gas separator tube in a milking machine with a double-vacuum system - Valve with pressure regulator and wood-based system for the operation of the exhaust gas system and the gas system with a double vacuum system

The valve is used in a pipe-milking plant with a double vacuum system, in which the air that mixes with the milk during milking is immediately separated off and the milk is transported to the collection point in a line with a higher vacuum than the milking vacuum. The features of the invention appear from the claims.

the invention will be described with reference to a drawing schematically showing an application example.

The valve according to the invention is arranged in a cylindrical tank -2- 68942, an air separator groove 1. The pipe nozzle 2 in the tank lid 13 is connected by a hose to a low vacuum line of a pipe milking plant with a vacuum of 25-35 cm Hg. Through the nipple 3 and the short milk hose connected to the nipple cup center, the same vacuum is applied to the central chamber of the nipple cups during milking. The nozzle 4 is connected by a hose to the high vacuum line of the plant, the milk line to a vacuum of 45-55 cm Hg.

The valve mechanism, which allows opening and closing between the space of the low-vacuum container 1 and the space of the high-vacuum pipe 4, consists of a slot 5 which is 25-35 mm long and 2-4 mm wide and located at the bottom of the tank. be of other shape and size; a strip 6 of elastic and flexible material (rubber, plastic) attached to the underside of the cylindrical float 7 and having a fastening and support pin 8, the float can move up and down in the tank 1. The guide pins on the outside of the float and the guide protrusions on the inside of the tank prevent float with valve straps 6 turns around.

The operation of the valve works as follows: When milking is started, the space in the air separator 1 is connected to the low pressure line of the plant via a short milk line and milking elements at a vacuum of 25-35 cm Hg. The space in the pipe 4 is connected to the milk line of the plant at a vacuum of 4 5-55 cm Hg. Based on the pressure difference above and below the slit opening 5, the valve strip 6 presses against the slit opening along its entire length. In this case, the valve strip forms a complete seal between the space in the air separator 1 and the space in the pipe 4.

As soon as milking is started, milk or a mixture of milk and air flows into the air separator through the pipe 3. The air b is separated from the milk in the tank and sucked out through the pipe nozzle 2. The valve strip 2 keeps the slit 5 closed, and when the milk has reached a certain level in the air separator, the float 7 enters the floating position. As the milk level in the air separator continues to rise, the upward rise of the float continues to increase and causes traction on the valve strip 6, which causes the strip to bend from areas 9 and 10. Because the valve strip bends from these areas, only small forces, limiting forces, in these areas. As soon as there are openings at both ends of the slit opening 5, the milk is squeezed through these openings into the space in the tube 4. As the flow of milk into the air separator increases, the float 7 moves upwards.

II

-3 '68942 and the elongation in the valve strip 6 increases. This causes the deflection areas 9 and 10 of the valve strip to move towards each other, and the end openings r in the slit opening become larger. In the range of the liquid flow for which the valve is dimensioned, 0-12 1 / min, a balance is always maintained between the liquid flow, the position of the float and the size of the valve opening, so that a stable and impulsive flow of milk c from the air separator to the pipe 4 . With a float valve of the usual type here, there would have been a permanent variation between a closed and a locked valve orifice, and this causes the milk flow from the air separator to become unstable and impulsive.

The valve described here is thus dimensioned so that the central part of the valve strip, i.e. the part between the areas 9 and 10 up to a liquid flow rate of 12 l / min, will always be against the gap opening.

If the vacuum decreases sharply in the event of an accident, the milk flow through the slit openings 5 may become smaller than the flow inside the separation tank 1 through the pipe 3. The float then rises and closes the opening leading to the pipe 2. This prevents the milk from penetrating the vacuum line. The vacuum in the tube 3 and in the milking member decreases, and the coming of milk from milking decreases or stops.

When milking is stopped and the milk enters the air separator, the liquid level in the separator and the float lower until the valve strip closes the entire gap opening. The final emptying of the space in the air separator is carried out by lifting the valve strip slightly out of the slot with a pressure rod 11, one branch of which is inserted inside the elastic rubber plug 12, which forms a seal of the end openings in the pipe 4. The opening mechanism for the final emptying of the air separator can also be designed in another way, e.g. by a crane connection to the pipe 4, but this has no effect on the mode of operation of the valve.

During the daily cleaning of the air separator, float and valve strip, a strong stream of wash water is sucked into the tank through pipes 2 and 3. The float then floats so high in the tank that the valve strip comes off the entire slit. The strong flow of washing water is then sucked through the valve opening into the pipe 4 and further into the milk line of the plant. In connection with the complete cleaning of the hinge equipment, the lid 13 can be taken from the tank 1, and the float 7 with the valve strip 6 is taken out of the tank. The rubber plug 12 with its weight rods 11 is removed from the tube 4.

Claims (2)

68942 -4 - A valve which provides stepless control and impulsive flow when discharging milk from a gas separator in a tube milking machine with a double vacuum system, characterized in that the core mechanism consists of a valve strip (6) of elastic and flexible material attached to the float (7), is in a position where it covers an approximately rectangular or other shaped slit opening (5J) in the bottom of the separator (1) and which is stretched and bent due to the float going upwards, which then opens for milk flow through the slit opening and provides stepless flow control. Valve according to Claim 1, characterized in that the valve strip (6) in the untensioned state is bent together into a circular and elliptical profile and fastened to the bottom of the float by a support pin (B) at the bottom of the valve strip and separator cylinder (1) when the float is not in the floating position. li