DE8701012U1 - Dosing and rinsing device for/in milking systems - Google Patents

Description

This case ref.: L 21/23

Dosing and rinsing device for/in milking systems

The invention relates to the dosing of rinsing agents in a rinsing device for/in milking systems, with a housing accommodating a pre-rinse container and at least one water line leading into the housing to the pre-rinse container and at least one rinsing agent line that can be connected to a rinsing agent container and leads into the housing to the water line.

To clean the milking systems, their pipes and hoses are rinsed with a cleaning liquid consisting of water and detergent, whereby the amount of detergent added to the water must be in a certain ratio to the water volume.

Since the detergent supply in this system with injector nozzles depends on the water pressure, it is not possible to dose the detergent quantity precisely if the water pressure varies or drops temporarily, and too much or too little detergent is often added to the water.

In order to achieve an accurate dosage of the amount of detergent, the known mixing and flushing devices of this type are equipped with baffle plates or valves to keep the water pressure in the water pipe constant, which, however, results in a very inaccurate operation.

Furthermore, the detergent supply is carried out via time-controlled water valves, whereby, however, if the water pressure is too high, too much detergent is supplied and if the water pressure is too low, too little detergent is supplied during the same opening times, which also means that precise dosing is not possible.

The object of the invention is therefore to create a mixing and rinsing device of the type mentioned at the beginning, which works in a simple manner at different water pressures with a constant vacuum for the precisely dosed addition of rinsing agent and contains simply constructed and trouble-free components for maintaining the constant vacuum.

This object is achieved according to the invention by the characterizing features of claim 1, whereby the design features listed in the subclaims represent advantageous further developments of the solution to the problem.

The subject matter of the invention extends not only to the features of the individual claims, but also to their combination.

The mixing and rinsing device according to the invention for/in milking systems works for a precisely dosed supply of rinsing agent with a constant vacuum at different water pressures. The vacuum in the rinsing agent line leading from a rinsing agent container to the water line is generated by an injector nozzle inserted into each water line. A vacuum control valve is inserted into the rinsing agent line between the injector nozzle and the rinsing agent container, which controls the vacuum depending on the respective water pressure and keeps it constant, so that the exact amount of rinsing agent is always added to the water through the suction effect.

Preferably, two rinsing agents are added alternately (morning/evening) in equal or different amounts to the water and mixed into a pre-rinse container, from which the cleaning liquid is then pumped through the milking system.

Each vacuum control valve is simple and cost-effective, operates trouble-free and is connected to the associated flushing line via a bypass line.

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An embodiment of the invention is explained in more detail below with reference to the drawing. It shows:

Fig. 1 is a front view in partial vertical section of a mixing and rinsing device for milking plants with a pre-rinse container arranged in a housing with detergent and rinsing agent lines as well as injection lines. gate nozzles and vacuum control valves,

Fig. 2 shows a longitudinal section through the vacuum control valve connected to a bypass line of a detergent line.

1 designates a housing of a mixing and rinsing device for/on milking systems, in which a pre-rinse container (2) is arranged, to which milk slurry and rinsing agent are fed while being mixed and from which the milk slurry-rinsing agent liquid is then conveyed into and through the milking system for cleaning .

^ At least one water line (3) is led into the housing (1) up to the pre-wash container (2) and at least one detergent line (4) is led into the water line (3), whereby the water line (3) outside the housing (1) is equipped with a connection connection (5) for connection to a water supply line and the detergent line (4) outside the housing (1) has a nozzle (19) and a suction probe (6) for insertion into a detergent container (7).

In the connection area between the water pipe (3) and the detergent pipe (4), an injector nozzle (8) is inserted into the water pipe (3), so that the water flow in the water pipe (3) exerts an injector effect on the detergent pipe (4) to suck in detergent.

Between the injector nozzle (8) and the rinsing agent container (7) a bypass line (9) leaves from the rinsing agent line (4) and is equipped with a vacuum cone valve (10). The bypass line (9) branches off from the rinsing agent line (4) inside the housing (1) and receives the vacuum control valve (10) at its end inside the housing (1).

The vacuum control valve (10) accommodates a valve housing (13) on a valve body (12) carrying a connection piece (11), in which a closure cone (15) is supported on the valve seat (14), which is loaded between the valve seat (14) and the valve body (12) by a compression spring (16) and is held against the valve seat (14) in the closed position (shut-off position).

The closure cone (15) rests against the valve seat (14) with a seal (17).

The vacuum control valve (10) is connected by its connection piece (11) to the Py-pass line (9) formed by a pipe or hose line.

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The water pipe (3) ends with its outlet in the upper area of the pre-wash tank (2). This water pipe (3) is preferably led horizontally into the housing (1) and the detergent pipe (4) runs vertically into the housing (1) so that both pipes (3, *) come together at an angle in the injector nozzle (β ) . The by-pass pipe (9) goes, for example, upwards from the detergent pipe (4) via a bend and carries the vacuum control valve (10) at its upper end; this by-pass pipe (9) is only a short length.

Preferably, two components of detergent are added to the water alternately (morning/evening), so that the device has two water pipes (3), each with an injector nozzle (8) and two detergent pipes (4), each of which is connected to a detergent container (7) and is connected to a water pipe (S'') in the area of the injector nozzle (8).

From each detergent line (4) also a by- &iacgr; )

Disconnect the fitting line (9) from the vacuum control valve (10).

Each vacuum control valve (10) is preferably equipped with an adjustable closing force of the closure cone (15), which can be adjusted, for example, by turning the valve body (12) and thus changing the pressure force of the

! Pressure spring (16) can be used; thus the valve can be

(10) continuously adjustable according to the water pressure to a set a predetermined force.

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The injector nozzles (8) create a vacuum in the detergent lines (4), through which detergent from a container (7) is conveyed through the detergent line (4) into the water line (3) and mixed there with the water.

When the water pressure is below the value set on the control valve (10) of each water line (3), the plug cone (15) is in the closed position and the vacuum in the flushing agent ¹ lines corresponds to the desired

Delivery rate of detergent.

If the water pressure in the water pipes (3) rises above the set value, the vacuum in the detergent pipes also changes and the control valve (10) now becomes effective. If the water pressure rises, the vacuum in the detergent pipes (4) also increases and this then causes the closure cone (15) to open against the spring force (16) into the open position, so that the detergent pipe (4) is ventilated via the bypass pipe ~) (9) and the vacuum drops.

When the water pressure drops again, the vacuum also decreases and the closure cone (15) is then moved back into the closed position by its compression spring (16).

These processes are constantly repeated at different water pressures, so that the vacuum control valve (10) always keeps the vacuum constant, whereby the detergent

always enters the pre-rinse tank in the same amount and in proportion to the water and is mixed with the water.

18 designates a rinsing line connected to the pre-rinsing container (2), which leads out of the housing (1) and is connected to the pipes of the milking system for conveying the cleaning liquid.

The bypass line (9) with vacuum control valve (10) is preferably located inside the housing (1) and the bypass line (9) branches off from the flushing agent line (4), preferably inside the housing (1) and thus between the injector nozzle (8) and the suction probe (6) located outside the housing (1).

Claims (1)

«about Protection claims 1- Dosing and rinsing device for/in milking systems, with a housing accommodating a pre-rinse container and at least one water line leading into the housing to the pre-rinse container and at least one rinsing agent line, connectable to a rinsing agent container, leading into the housing to the water line. line, characterized in that in the connection area between the water and detergent line (3,4) an injector nozzle (8) is inserted into the water line (3) and between the injector nozzle (8) and detergent container (7) a bypass line (9) with a vacuum control valve (10) leaves from the detergent line (4). 2. Dosing and flushing device according to claim 1, characterized in that the bypass line (9) and the vacuum control valve (10) are arranged inside or outside the housing (1). 3. Dosing and rinsing device according to claim 1 and 2, characterized in that the bypass line (9) is formed by a short line which extends in a curve or horizontally from the rinsing agent line (4) and ends in a line section at the end of which the vacuum control valve (10) is arranged. { &Iacgr; : '&igr;&igr; j » &Ggr;&igr; . : ] &idigr; I 1 t I t - 10 - 4- Dosing and rinsing device according to claims 1 to 3, characterized _in that the water line (3) outside the housing (1) has a connection (5) for a water supply line. 5. Dosing and rinsing device according to claims 1 to 4. characterized in that the rinsing agent line (4) outside the housing (1) has a nozzle (19) and a suction probe (6) for insertion into the rinsing agent container (7). 6. Dosing and rinsing device according to claims 1 to S, characterized in that the bypass line (9) between the injector nozzle (8) and the suction probe (6) of the flushing fluid line (4) branches off from the housing (1) inside or outside the same. 7. Dosing and rinsing device according to claims 1 to 6, characterized in that the water pipe (3) is guided into the housing (1) and ^ with its outlet in the upper area of the pre-rinse holder (2) and the detergent line (4) is led into the housing (1). 8. Dosing and rinsing device according to the claims 1 to 7, characterized in that it has two water lines (3) each with an injector nozzle (8?) and two rinsing agent lines (4) each with a bypass line (9) with vacuum control valve (10) and one rinsing agent line (4) is connected to a water line (3). 9· Dosing and flushing device according to claims 1 to 8, characterized in that the vacuum control valve (10) has a connection piece (11) for the by-pass line (.9) and a valve body (12) connected in a sealed manner to it and a closure cone (15) which is movable between the valve housing (13) and the valve body (12) and is held under spring tension and against a valve seat (14). 10. Dosing and rinsing device according to claims 1 to 9, characterized in that the vacuum control valve (10) is designed to be continuously adjustable.