JPS59169427A - Valve opening and closing device of milking controller - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a milking control device that can be used in a milking device to detect the milking state, cut off the supply of milking vacuum to the milk claw at the end of milking, and prevent the milk claw from falling. This relates to a valve opening/closing device.

As a conventional milking control device, Utility Model Publication No. 56-46364
As described in , there is a system in which an overflow pipe is installed in the milk chamber and has a small orifice at the bottom, and a float is placed around the overflow pipe, and the end of milking is detected from the descent of the float. , Special public school 5th year
A system is known in which an electrode rod is inserted into a milk storage container installed in a milk receiving chamber to electrically detect the end of milking, as described in Japanese Patent No. 6-14247.

However, each of these conventional devices has the following drawbacks. With systems that use a float and a micro-orifice, the micro-orifice may become clogged with particles or fat in the milk, preventing it from operating properly, or if the position of the device changes, the flow rate from the micro-orifice may change, causing the device to malfunction. There was an inconvenience that the time changed. In addition, with devices that use electrodes that have a pool in the flow path, if the posture of the device changes, the level of milk in contact with the electrode changes, causing malfunctions, and if there is a pool in the flow path, bubbles may occur. There was a problem that the bubbles generated caused the electrodes to become conductive, resulting in malfunction.

In view of these conventional drawbacks, the present invention provides an electrode that is not affected by the orientation of the device and is configured so that no bubbles remain, and that diverts milk so that even a small amount of milk comes into contact with the electrode, and that allows the milk to flow through the milk at the end of milking. It is an object of the present invention to provide a milking control device that includes a valve that cuts off the supply of vacuum pressure to the J-II Kukuro, and a valve opening/closing device that controls the operation of the valve based on detection signals from electrodes. The present invention will be described in detail below based on the illustrated embodiments. In the figure, 1 is the main body of the device, and inside the main body 1 are an upper milk chamber 2, a lower milk chamber 2, and a lower milk chamber 2.
It is divided into two milk chambers 3, and air chambers 6 and 7 are provided above the upper milk chamber 2 via diaphragms 4 and 5, each having a different pressure receiving area. The upper milk chamber 2 and the lower milk chamber 3 communicate with each other via a milk passage 8, and the milk passage 8 is connected to the diaphragms 4 and 5 via a connecting rod 9, and is connected to the milk passage 8 from the lower milk chamber 3 side. A valve 10 configured to block the passageway 8 is arranged. The upper milk chamber 2 has a milk inlet 11 connected to a milk claw via a milk tube, and the lower milk chamber 3
has a milk outlet 12 connected to a milk pipe via a milk tube, and below the valve 10, one side is insulated from an electrode 13a implanted in the main body and the other side is insulated via an insulator 14. A milk detection electrode consisting of an electrode 13b having a hemispherical shape and a protruding surface is arranged.

The inside of the air chamber 6 is always maintained at atmospheric pressure via the air hole 15, and the inside of the air chamber 7 is communicated with the air hole 16 or a vacuum connection port 17 connected to a vacuum pipe via a vacuum tube. It communicates with the air passage 18, and is configured to be switched between vacuum pressure and atmospheric pressure by a switching valve consisting of a solenoid 19 and a mover 20. Note that 21 is an air passage, and the air passage 21 communicates with the connection port 22.

Here, the operation of the solenoid 19 is controlled by a control circuit 23, and the control circuit also controls the electrodes 13a and 13.
connected to b. The configuration of the control circuit 23, as shown in the block diagram of FIG. 2, includes a switch control circuit 24 that switches between automatic, manual, and stop, and an electrode 13a.
131); an end detection circuit that detects the end of milking from the voltage between the electrodes 13a and 13b; circuit 27, a switching valve drive circuit that energizes the solenoid 19 in response to the milking end signal from the end delay circuit 27, and an electrode signal generation circuit 25;
It consists of a completion detection circuit and an initial delay circuit 29 that stops the operation of the completion delay circuit 27 for a predetermined period of time after the start of milking. In addition, in FIG. 2, an indicator display circuit responsive to the end delay circuit 27 is also incorporated.

In the apparatus according to the present invention having the above configuration, as shown in FIG. The outlet 12 is connected to the milk pipe 30 via the milk tube 34, the connection port 17 is connected to the vacuum pipe 31 via the air tube 35, and a piston 37 is connected to the vacuum pipe 31 etc. by a hooker 36. The pulsator 41 is connected to the cylinder rear connection port 22 having a
is operated, the teat cup bow inner 42 is set on the breast of the living body, and milking is performed.

Next, the operation of the device according to the present invention will be explained. When the switch of the switch control circuit 24 is turned on, no current is supplied to the solenoid 19 of the switching valve drive circuit, and the force of the mover is reduced by its own weight to the air passages 21 and 18. The air hole 16 is further opened.

When the air hole 16 is opened, the air chamber 7 becomes atmospheric pressure. On the other hand, the inside of the lower milk chamber 3 is brought into a vacuum state by the vacuum pressure supplied from the milk pipe 30. Then air chamber 7
Due to the pressure difference between the lower milk chamber 3 and the lower milk chamber 3, the valve 10 is lowered and the milk passage 8 is opened.
and flows down onto the electrodes 13a, 131). Here, since it takes time from the start of milking until milk begins to flow to the electrodes 13a and 13b, there is a possibility that the milking end detection circuit section transmits the milking end signal, but in the device according to the present invention, the initial delay circuit Since the operation of the detection circuit 26 and the like for detecting the end of the predetermined time period 29 is inhibited, the milk passage 8 is maintained in an open state.

Then, when milk starts to flow continuously or intermittently, the electrodes 13a and 13b become conductive, and current is not continuously supplied to the switching valve drive circuit okara solenoid 19, so milking is performed with the valve 10 lowered. It is done. Next, when milking is finished, when milk stops flowing to the electrodes 13a and 13b or the flow rate is less than 200 CC/, the electrodes 13a and 13b become insulated and the completion detection circuit hole detects the completion of milking. As a result of this detection, current is supplied to the end delay circuit 19, so that the movable element 20 is attracted and raised. The suction applied by the moving element closes the air hole 16 and opens the air passage 18. With the opening of the air passage 18, the vacuum connection port 17, the air passage 18, and the air passage 2 are opened.
Vacuum pressure is supplied to the air chamber 7 via 1. When the vacuum pressure in the air chamber 7 increases, the valve 10 is pulled up due to the pressure between the upper milk chamber 2 and the pressure receiving area difference between the diaphragms 4.5 and the milk passage 8 is closed. When this happens, vacuum pressure is no longer supplied to the milk claw 33. Also, as the vacuum pressure inside the air chamber 7 increases, the connection port 22 and the air tube 39
Since vacuum pressure is supplied into the cylinder 38 via
The piston 37 is sucked up, the milk claw 33 is pulled up by the rope connected to the screws 1 to 37, and milking is completed.

As explained above, according to the device m according to the present invention,
Since the milk flow rate detection means adopts a method that does not store milk, the supply of vacuum pressure to the milk claw can be cut off at the same time as milking is completed, and empty milking can be prevented.

In addition, since the electrode is positioned below the valve and has a hemispherical shape, malfunctions are eliminated immediately due to milk foaming, and the milk chamber is not affected by the orientation of the device, and the milk chamber is divided into upper and lower sections. This makes it easy to disassemble and clean the milk chamber. Furthermore, by using two diaphragms with different pressure receiving areas, the same vacuum supply source can be used to supply the air chamber 7 and the milk chamber 2. When used in combination with the method of making the milk claw suck 1 using a cylinder, it has the advantage that it is possible to prevent the milk claw from falling due to the stoppage of the vacuum pressure supply to the milk claw. has.

[Brief explanation of drawings]

FIG. 1 is a sectional view of the device according to the present invention, FIG. 2 is a diagram showing the configuration of a control circuit, and FIG. 3 is a diagram showing the device according to the present invention in its initial state. 1. Main body of the device 2. Upper Mire J rec room 3
・・Lower milk chamber 4.5・・Diaphragm 6.7・
・Air chamber 8・・Milling passage 9・・Connecting rod 10・・Nomarub 13a, 13b・・
Electrode 16...Air hole 19...Solenoid
20...Mover 23...Control circuit patent applicant Orion Machinery Co., Ltd.

Claims (1)

[Claims] 1. A milk chamber (2) having a milk inlet (11) and a milk passageway (8) serving as a milk outlet;
) and an air chamber (7) separated by a diaphragm and supplied with vacuum pressure or atmospheric pressure by a switching valve, and a connecting rod (
9) A valve opening/closing device for a milking control device, comprising a valve (1o) connected to the diaphragm through a valve (1o) for closing the milk passage (8). 2. The diaphragm has two diaphragms (4);
(5), the air chamber (6) defined by the diaphragms (4) and (5) is connected to the atmosphere, and the diaphragms (4) and (5) have different pressure receiving areas. A valve opening/closing device for a milking control device according to claim 1. 3. The switching valve is an electromagnetic switching valve composed of a solenoid (19) and a shifter (20) which is a valve body, and the air passage (21) communicating with the air chamber (7) is connected to the shifter (20). 20
) is switched between the air hole (16) that communicates with the atmosphere and the air passage (18) that communicates with the vacuum source.
A valve opening/closing device for a milking device as described in 1.