JPS59169429A - Automatic detaching device of milking device - 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 is 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 an automatic release device for a certain breast pump.

As a conventional milking control device, Utility Model Publication No. 56-46564
As described in , a type of 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 in place of the overflow pipe, and the end of milking is detected from the descent of the float. Also known is a system that electrically detects the end of milking by inserting an electrode rod into a milk storage container installed in a milk receiving chamber, as described in Japanese Patent Publication No. 56-14247.

However, each of these conventional devices has the following drawbacks. With float and micro/orifice systems, the micro J/orifice was clogged with grains and fat in the milk and did not work properly.
When the attitude of the device changes, the amount of lJ flowing out from the orifice changes, resulting in a change in operating time, which is an inconvenience. In addition, in devices that use electrodes with a reservoir in the flow path, if the posture of the device changes, the level of milk in contact with the electrode changes, causing malfunctions, or if there is a reservoir in the flow path. There was an inconvenience that bubbles were generated and the electrodes became conductive, resulting in malfunction.

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 is capable of distributing the milk at the end of milking. A breast pump consisting of a valve that shuts off the supply of vacuum pressure to the milk claw, a pulp opening/closing device that controls the operation of the valve based on a detection signal from an electrode, and a cylinder that operates in synchronization with the valve opening/closing device. The present invention is intended to provide an automatic disengagement device.The present invention will be described in detail below based on the illustrated embodiment.In the figure, 1 is the device main body, and inside the device main body 1 is an upper milk chamber 2. The upper milk chamber 2 is divided into two parts, and an air chamber 6.7 is provided above the upper milk chamber 2 via a diaphragm 4.5.The upper milk chamber 2 and the lower milk chamber 3 through a milk passage 8, and connected to the milk passage 8 via a connecting rod 9 to a diaphragm 4.5, which is configured to close the passage 8 from the lower milk chamber 3 side. A pulp 10 is arranged. The upper milk chamber 2 has a milk inlet 11 connected to a milk claw through a milk tube, and the lower milk chamber 6 has a milk outlet 12 connected to a milk pipe through a milk tube. , - Below the bulb 10, there is a milk amount detection electrode consisting of an electrode 13a implanted in the main body on one side and an electrode 13b having a hemispherical shape with a spherical surface protruding from the other side and insulated through an insulator 14. It is located. The inside of the air chamber 6 is always maintained at a high atmospheric pressure via the atmospheric hole 15.
Inside is an air passage 1 communicating with a vacuum connection port 17 connected to a vacuum pipe via an air hole 16 or a vacuum tube.
8 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 that communicates with the air chamber 7, and the air passage 21 communicates with a connection port 22.

Here, the operation of the solenoid 19 is controlled by a control circuit 23, and the control circuit 26 controls the electrodes 13a, 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 switches for automatic, manual, stop, etc.;
, 13a%13,b, an electrode signal generation circuit 25 that supplies current to the terminals 13a, 13b, an end detection circuit 26 that detects the end of milking from the voltage between the electrodes 13a1 and 13b, and an end detection circuit 26.
〃) Termination delay circuit 2 that delays the detection signals for a predetermined period of time
7, a switching valve drive circuit 28 that energizes the solenoid 19 in response to a milking end signal from the end delay circuit 27, and a switching valve drive circuit 28 that controls the operation of the electrode signal generation circuit 25, the end detection circuit 26, and the end delay circuit 27 for a predetermined time after the start of milking. It consists of an initial delay circuit 29 for stopping the signal. 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, the milk inlet 11 is connected to the milk channel in the milking circuit including the milk vibro 0 and the vacuum vibro 1 as shown in FIG.
The milk vibro 0 is connected to the milk claw 66 via the milk tube 32, and the milk outlet 12 is connected to the milk vibro 0 via the milk tube 34.
Connect the connection port 17 to the vacuum pipe 31 via the Air Chill Pro 5, and connect the hooker 66 to the vacuum vibro 1 etc.
The sill 38 having a piston 67 therein and the connection port 22 connected to each other are connected to each other via the air-cheap pro 9, and the milk claw 33 and the piston 37 are connected via the rope 40. 41 is operated, the milker 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 from the switching valve drive circuit 28 to the solenoid 19, and the mover 20 is moved by its own weight to the air passage 21. and 18 are closed, and weather 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.
The milk passes through the milk claw 33, the milk cheep 32, and the upper milk chamber 2, then passes through the valve 10 and reaches the electrode 16a115.
Flows down onto b. Here, from the start of milking, the electrode 13a,
Since it takes time for the milk to start flowing into the milk pump 13b, there is a possibility that the milking end detection circuit 26 sends the milking end signal, but in the device according to the present invention, the initial delay circuit 29
Since the operation of the predetermined time end detection circuit 26 and the like is inhibited, the milk passage 8 is maintained in an open state.

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 20DOC/'min.
In the following cases, the electrodes 13a and 13b 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 the end delay circuit 27 further sends an end signal 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 2
o is attracted and rises. 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 empty passage 21. When the vacuum pressure in the air chamber 7 rises, the valve 10 (difference in pressure and area of the diaphragm 4.5) with the upper milk chamber 2 is pulled up and the milk passage 8 is closed. Then, vacuum pressure is no longer supplied to the milk tank O-33. In addition, as the vacuum pressure inside the air chamber 7 increases, the connection port 22,
Vacuum pressure is supplied into the cylinder 38 via the air-chip 39, so the piston 37 is sucked down and the milk claw 66 is pulled up by the rope attached to the piston 67, completing milking.

As explained above, according to the device according to the present invention, since the connection port 22 communicating with the air chamber 7 is provided, the valve 10
It is possible to reliably take out the foreign signal bone in synchronization with the opening and closing of the
Furthermore, since the signal is an air signal based on vacuum and atmosphere, it is safer than an electrical signal and poses no danger to dairy cows.

Since the milk claw is suctioned using a shilling, it has the advantage that it is possible to prevent the milk claw from falling due to stopping the supply of vacuum and pressure to the milk claw.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a device according to the present invention, FIG. 2 is a block diagram showing the configuration of a control circuit, and FIG. 3 is a diagram showing the state of use of the device according to the present invention. 1- Apparatus body 2- Upper milk chamber 6- Lower milk chamber 4.5- Diaphragm 6.7- Air chamber 8- Milk passage 10- Valve 13a, 13b- Electrode 16- Air hole 1
9-Flenoid 2〇-Mover 26-Control circuit 37-Piston 38-Cylinder 69-Air tube Patent applicant Orion Machinery Co., Ltd. Figure 1

Claims (1)

[Claims] A milk chamber (2) having a milk inlet (11) and a milk passage (8) as a milk outlet is isolated from the milk chamber (2) via a diaphragm, and is supplied with vacuum pressure or atmospheric pressure by a switching valve. In the device, the air chamber (7) is connected to the diaphragm via a connecting rod (9) and a valve (10) closes the milk passage (8). A breast pump characterized in that a communicating sliding connection port (22) is provided, and a cylinder (68) having a piston (67) therein communicates with the connection port (22) via an air tube (69). Automatic release device.