JPS59169428A - Milking finish 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 relates to a milking control device in a milking machine which detects the milking state and cuts off the supply of milking vacuum to the milk claw at the end of milking.

As a conventional milking control device, Utility Model Publication No. 56-46364
As described in the above, a float is placed around the overflow pipe which is installed in the milk chamber and has a minute orifice at the bottom, and the end of milking is detected from the descent of the float. Ya, Tokuko Sho 5
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 No. 6-142' 47.

However, each of these conventional devices has the following drawbacks. In the case of the method that uses a micro-orifice and a JS orifice, if the micro-orifice becomes clogged with particles or fat in the milk and does not operate normally, or if the position of the device changes, the flow rate from the orifice will decrease. There were disadvantages such as changes in the operating time and changes in the operating time. In addition, with devices that use electrodes that have a reservoir in the flow path, when the posture of the device changes, the level of milk in contact with the electrode changes, causing malfunctions, and if there is a reservoir in the flow path. There was an inconvenience that bubbles were generated and the electrodes became conductive, causing malfunctions.

Therefore, in view of the conventional drawbacks, the present invention provides an electrode that is not affected by the posture of the device and is configured so that no bubbles remain, and a system that diverts milk so that even a small amount of milk comes into contact with the electrode, and that allows milk to flow at the end of milking. The object of the present invention is to provide a milking control device that is equipped with a valve that shuts off the supply of vacuum pressure to the claw and that controls the operation of the valve based on a detection signal from an electrode. 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 the inside of the main body 1 is divided into an upper milk chamber 2 and a lower milk chamber 6. Above the upper milk chamber 2, there is a diaphragm 4.5.
An air chamber 6.7 is provided via the air chamber 6.7. 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 a diaphragm 4.5 via a connecting rod 9, and a diaphragm 4.5 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 through a milk cove, and the lower milk chamber 3 has a milk outlet 12 connected to a milk pipe through a milk tube. At the same time, below the valve 10, a milk amount detection electrode is arranged, which consists of an electrode 13a implanted in the main body on one side and an electrode 13b having a hemispherical shape and a protruding spherical surface insulated through an insulator 14 on the other side. has been done. The inside of the air chamber 6 is always kept at atmospheric pressure via the air hole 15, and the inside of the empty package chamber 7 is connected to the vacuum connection port 1 which is connected to a vacuum pipe via the air hole 16 or a vacuum tube.
7, 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 is connected to the connection port 2.
It communicates with 2.

Here, the operation of the solenoid 19 is controlled by a control circuit 23, and the control circuit 23 controls the electrodes 13a and 1.
3b. As shown in the block diagram of FIG. 2, the configuration of the control circuit 26 includes a switch control circuit 24 having automatic, manual, stop, etc. switches, and an electrode 16a.
An electrode signal generation circuit 25 that supplies current to the electrode 113b, an end detection circuit 26 that detects the end of milking from the voltage between the electrodes 13a and 13b, and an end delay circuit 27 that delays the detection signal from the end detection circuit 26 for a predetermined period of time. , a switching valve drive circuit 28 that energizes the solenoid 19 in response to a milking end signal from the end delay circuit 27, an electrode signal generation circuit 25,
It consists of an initial delay circuit 29 that stops the operation of the end detection circuit 26 and the end delay circuit 27 for a predetermined period of time after the start of milking.

Furthermore, in FIG. 2, an indicator display circuit responsive to the termination delay circuit 27 is also incorporated.

In the apparatus according to the present invention having the above configuration, as shown in FIG. Connect the outlet 12 to the milk pipe 30 via the milk tea pro 4.
Connect the connection port 17 to the vacuum vibro 1 via the Air Q-Pro 5, and connect the hooker 66 to the vacuum vibro 1 etc.
The cylinder 68 having the piston 67 inside and the connecting port 22 connected to each other are brought into communication via the air cable 9, and the milk claw 66 and the piston 37 are connected via the rope 40. Milking is performed by operating the pulsator 41 and placing the teat cup liner 42 into the udder of the cow.

Next, to explain the operation of the device according to the present invention, when the switch of the switch control circuit 24 is set to ○N, no current is supplied from the switching valve drive circuit 28 to the solenoid 19, and the mover 20 is caused by its own weight. The communication between the air passages 21 and 18 is closed, and 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 6 is brought into a vacuum state by the vacuum pressure supplied from the milk vibro 0. Then, due to the pressure difference between the air chamber 7 and the lower milk chamber 6, the valve 10 is lowered, and the milk passage 8 is opened. electrode 13a1
It flows down onto 13b. Here, from the start of milking, the electrode 13
Since it takes time for milk to start flowing through the channels a and 13b, there is a possibility that the milking end detection circuit 26 sends a milking end signal. 26 etc. are 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 the switching valve drive circuit 28
Since current is not continuously supplied to the solenoid 19, milking is performed with the valve 10 in the lowered position. Next time milking is finished, the milk will no longer flow to the electrodes 13a and 13b, or the flow rate will be 200 OC/m.
When the milking temperature is less than in, the electrodes 13a and 1'3b become insulated, and the end detection circuit 26 detects the end of milking.

The result of this detection is sent to the end delay circuit 27, and a end signal is sent from the end delay circuit 27;6) to the switching valve drive circuit 28. Then, current is supplied from the switching valve drive circuit 28 to the solenoid 19 that constitutes the switching valve, so that the mover 20 is attracted and moves upward. The suction of the mover 20 closes the air hole 16 and opens the air passage 18.

As the air passage 18 is opened, vacuum pressure is supplied to the air chamber 7 via the vacuum connection port 17, the air passage 18, and the air passage 21. When the vacuum pressure in the air chamber 7 increases, the valve 10 is pulled up due to the pressure with the upper milk chamber 2 and the area difference between the guyaflames 4.5, and the milk passage 8 is closed. Then, vacuum pressure is supplied to the milk claw 66 and it becomes powerful. In addition, as the vacuum pressure in the air vZ increases, the connection port 22,
Vacuum pressure is supplied into the shilling 68 through the air valve 39, so that when the piston 67 sucks up the milk claw 66, the lobe connected to the piston 37 pulls up the milk claw 66, and milking ends.

As explained above, according to the device according to the present invention, the milk rumor detection means adopts a method of storing milk, so that it is possible to cut off the supply of vacuum pressure to the milk claw at the same time as milking is completed. It is possible to prevent dry squeezing. Since the electrode is positioned below the bulb and the shape is spherical, it has the advantage of being resistant to milk bubbles and eliminating malfunctions, as well as being strong because it is not affected by the posture of the device.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a device according to the present invention, FIG. 2 is a block diagram showing an example of the configuration of a control circuit, and FIG. 6 is a diagram showing the state of use of the device according to the present invention. . 1. Main body of the device 2. Upper milk chamber 6. Lower milk chamber 4.5. Diamond 7 ram 6.7. Air chamber 8. Milk passage 10. Valve 13
a, 13b... Electrode 16... Air hole 19... Solenoid 20... Mover 26... Control circuit patent applicant Orion Machinery Co., Ltd.

Claims (1)

[Scope of Claims] 1. An upper milk chamber (2) having a milk inlet (11) divided into two parts communicating through a milk passageway (8).
and a lower milk chamber (6) with a milk outlet (12)
and lower milk chamber (3) gAlj to milk passage (8
), and electrodes (13a), (13b) for detecting the amount of milk arranged below the valve (10) in the lower milk chamber (3), A milking end control device characterized in that a valve (1o) is opened and closed in response to detection signals from electrodes (13a) and (13b). 2. The valve (1θ) is shaped like a living sphere, and its spherical surface closes the milk passage (8), so that the milk flowing into the lower milk chamber (6) through the milk passage (8) is evenly divided. The first claim characterized in that
The milking end control device described in . 3 The electrode (13a) is implanted in the lower part of the milk chamber (6), and the electrode (13b) is connected to the electrode (13a) and the insulator (1).
Claim 1 or 2, characterized in that the tip of the electrode (13'b) is spherical and projects from the lower part of the milk chamber (6). Milking end control device.