JPH11196698A - Milker for parlor - Google Patents

Abstract

(57) [Problem] To provide a parlor milker in which a part of a milk passage is used also as a washing liquid passage, thereby simplifying and miniaturizing the piping structure. SOLUTION: A milk passage 10, a connection passage 160, a washing liquid passage 50, a sub-milk passage 12 and a receiver 20 are connected in a loop. Then, at the time of milking, the milk squeezed by the milking unit 30 is transferred to the first sub-passage 4.
0 to the milk passage 10. Then, the milk is dispersed into the milk passage 10 and the washing liquid passage 50 communicating with the connection passage 160 in a bifurcated manner, and the receiver 20
Let it flow inside. At the time of washing, the washing liquid 60 flowing into the washing liquid passage 50 is supplied to the second sub-passage 90, the teat cup washer 80, the milking unit 30 attached to the washer, the first sub-passage 40, and the milk passage 1
0 or through the connection passage 160 and the milk passage 10 into the receiver 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a milker for parlors which squeezes milk from udders of cows and the like stored in a parlor and collects the milk in a receiver installed in the same parlor.

[0002]

2. Description of the Related Art A parlor milker generally has a structure as shown in FIG. In this milker, a milk passage 10 for conveying milk is arranged in a loop in a parlor via a receiver 20. The milk passage portion 10b farthest from the receiver 20 is located at a high position, and the receiver 20 is located at a low position. The loop-shaped milk passage 10 is branched from the milk passage portion 10b arranged at the above-mentioned high position to the receiver 20 with a predetermined gradient and bifurcated. Then, the milk that has flowed into the milk passage 10 is configured to receive the gravitational action, disperse the milk passage 10 branched in the forked shape into two hands, and flow into the receiver 20. A milking unit 30 is connected to the middle of the milk passage 10 via a first sub-passage 40. A cleaning liquid passage 50 for conveying the cleaning liquid 60 is arranged near the milk passage 10 in the vicinity of the milk passage 10. One end of the cleaning liquid passage 50 is inserted into a tank 70 in which the cleaning liquid 60 is stored. A teat cup washer 80 is connected to a middle part of the washing liquid passage 50 via a second sub passage 90. The milking unit 30 is detachably mounted on the teat cup washer 80.

[0003] When milking is performed using this milker, the milking unit 30 is connected to a teat cup washer 8.
0, and the teat cup of the milking unit 30 is attached to the udder of a cow or the like. Next, a gas such as air in the receiver 20 is continuously suctioned using the suction means 100 such as a vacuum pump. Then, a suction force is generated in the milking unit 30 and milk is squeezed from the breast using the milking unit 30. Then, the milk is passed through the first sub-passage 40 and the loop-shaped milk passage 10,
It flows into the receiver 20.

[0004] At this time, the milk flowing into the milk passage 10 is dispersed into the milk passage 10 branched bifurcated from the milk passage portion 10b arranged at a high position, and flows into the receiver 20. . Then, the volume of the milk passage 10 is sufficiently ensured, and the milk passage 10 has a role as a surge tank. Then, the milk is dispersed in the two branches of the bifurcated milk passage 10 so that the milk is subjected to gravity and smoothly flows in the direction of the receiver 20, or the milking unit 30 connected to the downstream side of the milk passage 10. Milk can flow into the milk passage 10 smoothly with low resistance together with air, or the air flowing with milk into the milk passage 10 from the milking unit 30 is separated from the milk and flows smoothly through the upper portion of the milk passage 10. Thus, the air pressure in the milk passage 10 is substantially equalized.

[0005] The milk collected at the bottom of the receiver 20 is transferred to a cooler 1 for storing milk using a transfer means 110.
20. Then, it is stored in the cooler 120.

When cleaning the milk passage 10 through which milk passes, the milking unit 30 and the like, the milking unit 30 is mounted on a teat cup washer 80. Then, the first opening / closing valve 140 provided in the third sub-passage 130 connecting the washing liquid passage 50 and the milk passage portion 10c near the receiver 20 is opened. At the same time, the user operates the second opening / closing valve 150 to connect the third sub-passage 130 and the milk passage 10 to the receiver 2.
The opening state of the milk passage portion 10d close to the zero side is narrowed. Next, the gas in the receiver 20 is continuously suctioned using the suction means 100. Then, a suction force is generated in the cleaning liquid passage 50 through the milk passage 10 and the third sub-passage 130. Then, the cleaning liquid 60 in the tank 70 is sucked into the cleaning liquid passage 50, and the cleaning liquid 60 is
Sub passage 90, inside teat cup washer 80, inside milking unit 30, first sub passage 40, milk passage 10
And circulates into the receiver 20. A part of the washing liquid 60 sucked into the washing liquid passage 50 is supplied to the rising portion 10 of the milk passage 10 connected to the third sub-passage 130.
From a, the liquid is circulated into the receiver 20 through the milk passage portion 10d whose opening state is narrowed by the second opening / closing valve 150. Then, the milking unit 30, the first sub-passage 40, and the milk passage 10 through which the milk flows pass through the cleaning liquid 6.
Washed with 0.

[0007] At that time, the air injector 214 provided in the third sub-passage 130 is operated to intermittently feed outside air into the third sub-passage 130. And
The cleaning liquid 60 staying at the rising portion 10a of the milk passage 10 connected to the third sub-passage 130 is used as a plug flow. Then, the cleaning liquid 60 having the plug flow is circulated in the milk passage 10 to completely clean the inner wall of the milk passage 10 even at the upper portion thereof.

Here, the term "plug flow of the cleaning liquid 60" means that the cleaning liquid 60 flowing through the pipe-shaped passage is intermittently pressed by the outside air, and the cleaning liquid 60 flowing through the passage is successively formed into a large lump in the passage. That means. When such a cleaning liquid 60 in the form of a plug flows into the passage, the large-sized cleaning liquid 60 can completely clean the inner wall of the passage even at the upper portion thereof. And the cleaning liquid 60
Can be prevented from reaching the upper part of the inner wall of the passage and the like, and the upper part of the inner wall of the passage is not washed.

The cleaning liquid passage 50 near the tank 70 also
An air injector 220 is provided. When cleaning the milk passage 10, the milking unit 30, and the like, the air injector 220 is operated to intermittently feed outside air into the cleaning liquid passage 50. The amount of the cleaning liquid 60 flowing into the cleaning liquid passage 50 from the inside of the tank 70 is reduced. Then, the cleaning liquid 60 in the tank 70 is
This prevents the cleaning liquid 60 in the tank 70 from being exhausted by being excessively sucked up to zero.

The cleaning liquid 60 used for cleaning stored in the bottom of the receiver 20 is returned into the tank 70 by using the transfer means 110. The cleaning liquid 60 is used repeatedly for cleaning.

The reason why the milker is provided with the above-mentioned washing mechanism in addition to the milking mechanism to wash the milk passage 10 through which milk passes, the milking unit 30 and the like is that milk extracted from udders such as cows is used for milk. This is because the contamination of various bacteria is extremely disliked. Therefore, at the time of milking, before and after the milking, as described above, the milk passage 1 through which milk flows is provided.
0. The milking unit 30 and the like are completely washed.

[0012]

However, in the above-mentioned milker, in addition to the loop-shaped milk passage 10, it is necessary to provide the washing liquid passage 50 in a line with the milk passage 10. Further, it is necessary to provide a third sub-passage 130 for connecting the washing liquid passage 50 to the milk passage 10, a first opening / closing valve 140 for opening and closing the passage, and the like.
As a result, the piping structure becomes complicated and large, requiring a great deal of work and time for its production. Also, the maintenance required a lot of trouble and time.

Further, in the above-mentioned milker, when the milk passage 10 is unified instead of having a forked shape and the piping structure is simplified and miniaturized, the milk passage 10 loses its role as a surge tank. I have. And, the milk does not flow smoothly in the milk passage 10 toward the receiver 20 or the milk cannot flow smoothly with low resistance from the milking unit 30 connected to the downstream side of the milk passage 10 into the milk passage 10 with the air. Milking unit 3
The air flowing into the milk passage 10 together with the milk from 0 was separated from the milk and could not flow smoothly through the upper portion of the milk passage 10 or the like, and the pressure in the milk passage 10 became uneven.

The present invention can solve such a problem.
A part of the milk passage is also used as the washing liquid passage, so that the piping structure can be greatly simplified and downsized, and
It is an object of the present invention to provide a parlor milker (hereinafter, referred to as a milker) capable of ensuring a sufficient volume of a milk passage and allowing the milk passage to serve as a surge tank.

[0015]

In order to achieve the above object, a milker according to the present invention comprises a milk passage and a sub-milk passage for conveying milk, one end of which is connected to the other via a receiver for collecting milk. A cleaning liquid passage for conveying a cleaning liquid having one end connected to the other end of the passage, a connection passage connecting the other end of the cleaning liquid passage and the other end of the milk passage, a tank in which a cleaning liquid is stored, and the cleaning liquid passage; A liquid supply passage for connecting one end of the cleaning liquid passage to the cleaning liquid passage, and a three-way switching valve provided at a connection point between the liquid supply passage, the cleaning liquid passage, and the sub milk passage. And closing the sub-milk passage and communicating the cleaning liquid passage with the liquid supply passage, or closing the liquid supply passage and connecting the cleaning liquid passage with the sub-milk passage. And a transfer means for transferring milk collected at the bottom of the receiver to a cooler for storing milk, or transferring cleaning liquid collected at the bottom of the receiver into the tank, and the connection. An opening / closing throttle valve provided at a connection point between a passage and a cleaning liquid passage, which opens and closes a connection point between the connection passage and the cleaning liquid passage, and adjusts an opening degree of a connection point between the connection passage and the cleaning liquid passage to be wide and narrow. Opening / closing throttle valve, suction means for sucking gas in the receiver, a first sub-passage connecting the milking unit and the milk passage, a teat cup washer removably loaded with the milking unit, and the cleaning liquid. A second sub-passage connecting the passage and an on-off valve for opening and closing the second sub-passage are provided.

When performing milking using this milker, the milking unit is detached from the teat cup washer, and the teat cup of the milking unit is mounted on the udder of a cow or the like. Further, the second sub passage is closed by operating the on-off valve. In addition, the three-way switching valve is operated to close the liquid supply passage and make the washing liquid passage communicate with the sub milk passage. At the same time, the opening / closing throttle valve is operated to widen the connection between the connection passage and the washing liquid passage. Next, the suction means is operated to continuously suck the gas in the receiver.

Then, a suction force can be generated in the milk passage, the washing liquid passage connected to the passage via the connection passage, and the milking unit. Then, the milk squeezed from the udder of a cow or the like by the milking unit can flow into the milk passage through the first sub-passage to which the milking unit is connected. Then, the milk can be flown into the receiver by using the gravity applied to the milk to disperse the inclined cleaning liquid passage and the milk passage in two ways.

In this case, the washing liquid passage is also used as the milk passage so that the volume of the milk flowing passage is sufficiently ensured, and the milk passage and the washing liquid passage can serve as a surge tank. Then, the milk is dispersed in the milk passage and the washing liquid passage in two hands to smoothly flow into the receiver, or the milk flows smoothly into the milk passage along with air from the milking unit connected to the downstream side of the milk passage with low resistance. In addition, the air that has flowed with the milk into the milk passage from the milking unit is separated from the milk and smoothly flows through the upper portion and the like in the milk passage, so that the air pressure in the milk passage can be substantially equalized.

The milk collected at the bottom of the receiver is transferred to a cooler for storing milk using a transfer means.
Can be stored in the cooler.

When the milk passage, the milking unit, the first sub passage, the washing liquid passage and the like through which the milk passes are washed,
Load the milking unit into the teat cup washer. Also, the second sub passage is opened by operating the on-off valve. In addition, the three-way switching valve is operated to close the sub-milk passage and connect the cleaning liquid passage and the liquid supply passage.
At the same time, the opening / closing throttle valve is operated to narrow the connection between the connection passage and the washing liquid passage. Next, the suction means is operated to continuously suck the gas in the receiver.

Then, a suction force can be generated in the milk passage. At the same time, a suction force can be generated in the cleaning liquid passage and the liquid sending passage communicating therewith through the milk passage and the connection passage. Then, the cleaning liquid in the tank is supplied to the liquid supply passage, the cleaning liquid passage, the second sub-passage, the teat cup washer, the milking unit, the first sub-passage,
It can be circulated through the milk passage and into the receiver. At the same time, a part of the cleaning liquid circulating in the cleaning liquid passage can be circulated into the receiver through the connection portion between the narrowly opened connection passage and the cleaning liquid passage, the connection passage, and the milk passage. Then, the milk passage, the milking unit, the first sub passage, the washing liquid passage, the connection passage, and the like through which the milk passes can be washed with the washing liquid.

When the milking unit is mainly cleaned, in addition to the above-mentioned cleaning operation, the opening / closing throttle valve is operated,
The connection point between the connection passage and the cleaning liquid passage is closed, or the connection point between the connection passage and the cleaning liquid passage is narrowly opened.

Then, a suction force can be generated in the cleaning liquid passage and the liquid feeding passage communicating therewith through the milk passage, the first sub passage, the inside of the milking unit, the teat cup washer, and the second sub passage. Then, the cleaning liquid in the tank can be circulated into the receiver through the liquid feeding passage, the cleaning liquid passage, the second sub passage, the inside of the teat cup washer, the inside of the milking unit, the first sub passage, and the milk passage. At this time, the opening / closing throttle valve is used to close the connection point between the connection passage and the cleaning liquid passage, or to open the connection point between the connection passage and the cleaning liquid passage narrowly. In addition, it is possible to prevent circulation to the milk passage through the connection passage, or to reduce the amount of the cleaning liquid circulating from the cleaning liquid passage to the milk passage through the connection passage. Then, all or most of the cleaning liquid circulating in the cleaning liquid passage can be circulated in a large amount into the milking unit. And
The milking unit can be completely cleaned by the large amount of cleaning liquid.

When the milk passage is mainly washed,
In addition to the above-described cleaning operation, the on-off valve is operated to close the second sub-passage, or the second sub-passage is kept open without operating the on-off valve, and the on-off throttle valve is operated. By operating, the connecting portion between the connecting passage and the washing liquid passage is opened widely.

Then, a suction force can be generated in the washing liquid passage and the liquid sending passage communicating therewith through the milk passage and the connection passage. Then, the cleaning liquid in the tank is passed through a liquid supply passage, a cleaning liquid passage, a connection passage, and a milk passage.
It can be circulated into the receiver. At this time, since the second sub passage is closed by operating the on-off valve, the cleaning liquid circulating in the cleaning liquid passage is circulated to the second sub passage, the teat cup washer, the milking unit, and the like. Can be stopped. Or, even if the second sub-passage is kept open without operating the on-off valve, the second sub-passage, the inside of the milking unit, the first sub-passage, etc. are formed to have a high flow resistance and a small diameter. The amount of washing liquid circulating from the washing liquid passage to the receiver through the second sub-passage, the inside of the teat cup washer, the inside of the milking unit, the first sub-passage, and the milk passage can be suppressed. Then, all or most of the cleaning liquid circulating in the cleaning liquid passage can be circulated in a large amount to the milk passage through the connection portion and the connection passage between the connection passage and the cleaning liquid passage that are widely opened using the on-off throttle valve. . Then, the milk passage can be completely cleaned by the large amount of the cleaning liquid.

Milk passage, milking unit, washing liquid passage,
The cleaning liquid used for cleaning the first sub-passage and the like, which has accumulated at the bottom of the receiver, can be returned into the tank by using a transfer unit. Then, the cleaning liquid can be repeatedly used for cleaning.

In the milker according to the present invention, an air injector for intermittently sending outside air to the liquid feed passage,
It is preferable to provide a structure including an air injector that uses a cleaning liquid fed from the liquid feeding passage to the milk passage as a plug flow.

In this milker, the outside air can be intermittently fed into the liquid feed passage by operating the air injector. And, by the outside air, the cleaning liquid sucked up from the inside of the tank to the liquid supply passage can be used as a plug flow. Then, the washing liquid having the plug flow can be circulated through the washing liquid passage, the connection passage, the milk passage, the second sub passage, the inside of the teat cup washer, the inside of the milking unit, the first sub passage, etc. . Then, with the cleaning liquid used as the plug flow, the milk passage, the connection passage, the cleaning liquid passage, the inside of the milking unit, and the inner wall of the first sub-passage through which milk passes can be completely and completely cleaned up to the upper part thereof. In addition, it is possible to prevent the cleaning liquid in the tank from being excessively sucked into the liquid supply passage by the outside air intermittently fed into the liquid supply passage, and the cleaning liquid in the tank from being emptied.

Further, in the milker according to the present invention, instead of the opening / closing throttle valve, the connection point between the connection passage and the cleaning liquid passage is opened and closed, and the opening degree of the connection point between the connection passage and the cleaning liquid passage is adjusted to be wide and narrow. The two-way opening of the sub-three-way switching valve is connected to the end of the connection passage and the end of the washing liquid passage, and the sub-three-way switching valve is provided at the connection point between the connection passage and the washing liquid passage. An air injector for plugging the cleaning liquid circulating in the sub three-way switching valve into the remaining one passage opening of the switching valve, and an air injector for intermittently sending outside air to the cleaning liquid circulating in the sub three-way switching valve. The structure may be good.

In this milker, at the time of milking, the connection portion between the connection passage and the washing liquid passage can be opened widely by operating the sub three-way switching valve. And, the milk flowing into the milk passage, the milk passage and the connecting passage and the washing liquid passage communicating therewith are dispersed in two ways to smoothly and accurately flow into the receiver, or a milking unit connected to the downstream side of the milk passage. From the milking unit and the milk flowing into the milk passage from the milk passage with the milk from the milking unit to separate the milk from the milk and allow the milk to flow smoothly through the upper part of the milk passage. It can even out the internal pressure.

When cleaning the washing liquid passage, the connecting passage, the milk passage, etc., the sub three-way switching valve is operated to
The connecting portion between the connecting passage and the washing liquid passage can be narrowly opened. In addition, it is possible to prevent the cleaning liquid from excessively flowing from the cleaning liquid passage through the connection passage into the milk passage, and to sufficiently secure the amount of the cleaning liquid flowing from the cleaning liquid passage into the second sub-passage. Then, the milking unit, the first sub-passage and the like can be completely cleaned by the cleaning liquid. With it
By operating the air injector provided in the sub three-way switching valve, the outside air can be intermittently fed into the cleaning liquid circulating in the sub three-way switching valve. Then, the cleaning liquid circulating in the sub three-way switching can be used as a plug flow.
And the washing | cleaning liquid made into the plug flow can be made to flow into a connection passage and a milk passage connected to it. And, with the washing liquid in the plug flow, the L-shaped portions and the like of the inner walls of the connection passage and the milk passage can be completely washed without any excess.

When the milking unit is mainly cleaned, the sub-three-way switching valve is operated to close the connection between the connection passage and the cleaning liquid passage or to close the connection between the connection passage and the cleaning liquid passage. It can be narrow and open. Then, it is possible to prevent the cleaning liquid from flowing from the cleaning liquid passage through the connection passage into the milk passage, or to reduce the amount of the cleaning liquid flowing from the cleaning liquid passage into the milk passage through the connection passage. Then, a large amount of the cleaning liquid flowing through the cleaning liquid passage is circulated into the milking unit, and the milking unit can be completely cleaned with the cleaning liquid.

When the milk passage is mainly washed, the connection portion between the connection passage and the washing liquid passage can be widely opened by operating the sub three-way switching valve. Then, the washing liquid flowing through the washing liquid passage is passed through the connection passage,
A large amount can flow into the milk passage. At the same time, by operating the air injector provided in the sub three-way switching valve, the cleaning liquid circulating in the sub three-way switching valve can be made into a plug flow. Then, the cleaning liquid is caused to flow into the milk passage, and the milk passage can be completely cleaned with a large amount of the cleaning liquid formed as the plug flow.

[0034]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a preferred embodiment of a milker according to the present invention, and FIG. 1 is a schematic structural explanatory view thereof. Hereinafter, this milker will be described.

In the illustrated milk car, one end of a milk passage 10 for conveying milk is connected to one side wall of a tank-shaped receiver 20 having an airtight structure for collecting milk.
The other side wall of the receiver 20 is connected to one end of a sub-milk passage 12 for conveying milk. One end of the milk passage 10 and one end of the sub-milk passage 12 communicate with each other via the receiver 20.

Milk passage 10 and sub milk passage 12
Is formed using a thick pipe of about 3 inches. And it is comprised so that viscous milk can be conveyed smoothly through the milk passage 10 and the sub milk passage 12.

The other end of the sub milk passage 12 is connected to one end of a washing liquid passage 50 for conveying the washing liquid. The cleaning liquid passage 50 is formed using a thin pipe of about 2 inches. Many parts of the washing liquid passage 50 are arranged substantially parallel to the milk passage 10.

The other end of the washing liquid passage 50 and the other end of the milk passage 10 are connected via a connecting passage 160 formed of a pipe.

Reference numeral 70 denotes a tank-like tank in which the cleaning liquid 60 is stored. The inside of the tank 70 and one end of the cleaning liquid passage 50 are connected by a liquid sending passage 170 formed of a pipe. The cleaning liquid 60 in the tank 70 can be sent to the cleaning liquid passage 50 through the liquid supply passage 170.

A three-way switching valve 180 is provided at a connection point between the liquid feeding passage 170, the washing liquid passage 50, and the sub milk passage 12. By operating the three-way switching valve 180, the sub-milk passage 12 is closed and the washing liquid passage 50 and the liquid sending passage 170 are communicated as shown in the connection diagram of FIG. As shown in the connection diagram of a), the liquid supply passage 170 is closed, and the cleaning liquid passage 50 and the sub milk passage 12 can be communicated with each other.

Reference numeral 110 denotes a transfer means, which is formed by a liquid feed pump, a liquid feed pipe, and the like. Transfer means 110
Is used to transfer the milk collected in the bottom of the receiver 20 to the cooler 120 for storing milk, or to use the cleaning liquid 60 collected in the bottom of the receiver 20 by using the means.
Can be returned into the tank 70.

An opening / closing throttle valve 190 is provided at a connection point between the connection passage 160 and the washing liquid passage 50. One end of the connection passage 160 is connected to one opening of the opening / closing throttle valve 190, and the other end of the cleaning liquid passage 50 is connected to the other opening of the opening / closing throttle valve 190. The end of the connection passage 160 and the end of the cleaning liquid passage 50 communicate with each other through the opening and closing throttle valve 190. And
By operating the opening / closing throttle valve 190, the connection passage 16
It is configured such that the connection point between the cleaning liquid passage 50 and the connection passage 0 can be opened and closed, or the opening degree of the connection point between the connection passage 160 and the cleaning liquid passage 50 can be adjusted to be wide and narrow.

Connection passage 1 provided with opening / closing throttle valve 190
The connection point between 60 and the washing liquid passage 50 is arranged at a high position, and the receiver 20 is arranged at a low position. The washing liquid passage 50 and the connecting passage 160 and the milk passage 10 communicating with the connecting passage are formed by the connecting passage 160 and the washing liquid passage 5.
It is arranged in a bifurcated manner with a predetermined gradient from the connection point with 0 toward the receiver 20. Then, the milk flowing into the milk passage 10 is subjected to gravity action, and the milk passage 10 having a predetermined gradient and the washing liquid passage 5
0 is distributed in two ways and flows into the receiver 20.

Reference numeral 100 denotes a suction means, which is formed by a vacuum pump or the like. The suction means 100 is configured to operate the means to suck a gas such as air in the receiver 20.

Reference numeral 30 denotes a milking unit provided with a teat cup and the like to be attached to the udder of a cow or the like. The milking unit 30 includes a first sub-passage 4 made of a flexible hose.
0, it is connected to the middle part of the milk passage 10.

Reference numeral 80 denotes a teat cup washer in which the milking unit 30 is removably mounted. The teat cup washer 80 is connected via a second sub-passage 90 made of a pipe to an intermediate portion of the washing liquid passage 50 arranged alongside the milk passage 10.

The second sub passage 90 is provided with an on-off valve 200 such as a pinch cock. And the on-off valve 2
By operating 00, the second sub-passage 90 can be opened and closed.

The milker shown in FIG. 1 is configured as described above. When milking is performed using this milker, the milking unit 30 is connected to the teat cup washer 8.
Leave from zero. Then, the teat cup of the milking unit 30 is attached to a breast of a cow or the like. Also, the on-off valve 200
Is operated to close the second sub-passage 90. Further, the three-way switching valve 180 is operated to close the liquid supply passage 170 and connect the cleaning liquid passage 50 and the sub milk passage 12 as shown in the connection diagram of FIG. At the same time, the opening / closing throttle valve 190 is operated to widen the connection between the connection passage 160 and the cleaning liquid passage 50 as shown in the connection diagram of FIG.

Next, the suction means 100 is operated to continuously suck the gas in the receiver 20. Then, a suction force is generated in the milk passage 10, the washing liquid passage 50, and the milking unit 30. Then, the milk squeezed from the udder of a cow or the like by the milking unit 30 flows into the milk passage 10 through the first sub-passage 40 to which the milking unit 30 is connected. Then, the milk is allowed to flow into the receiver 20 by dispersing the milk passage 10 having a predetermined gradient and the washing liquid passage 50 in two ways.

The milk collected in the bottom of the receiver 20 is transferred to a cooler 120 for storing milk using a transfer means 110 and stored in the cooler 120.

When the milk passage 10, the milking unit 30, the first sub-passage 40, the washing liquid passage 50 and the like through which the milk passes are washed, the milking unit 30 is loaded into the teat cup washer 80. Further, the on-off valve 200 is operated to open the second sub-passage 90. Also, by operating the three-way switching valve 180, as shown in the connection diagram of FIG.
The sub milk passage 12 is closed, and the washing liquid passage 50 and the liquid sending passage 170 are communicated. At the same time, the opening / closing throttle valve 190 is operated to narrow the connection between the connection passage 160 and the cleaning liquid passage 50 as shown in the connection diagram of FIG.

Next, the suction means 100 is operated to continuously suck the gas in the receiver 20. Then, a suction force is generated in the milk passage 10, the washing liquid passage 50, and the liquid sending passage 170 communicating therewith. Then, the cleaning liquid 60 in the tank 70 is passed through the liquid supply passage 170, the cleaning liquid passage 50, the second sub-passage 90, the teat cup washer 80, the milking unit 30, the first sub-passage 40, and the milk passage 10, and then into the receiver 20. Circulate to At the same time, a part of the cleaning liquid circulating in the cleaning liquid passage 50 is circulated into the receiver 20 through the connection portion between the connection passage 160 and the cleaning liquid passage 50 which are narrowly opened, the connection passage 160, and the milk passage 10. Then, the milk passage 10 through which the milk passes, the inside of the milking unit 30 and the first sub passage 4
0, the cleaning liquid passage 50 and the like are cleaned with the cleaning liquid 60.

When the milking unit 30 is to be washed mainly, the opening / closing throttle valve 190 is operated in addition to the above-mentioned washing operation to connect the connection passage 160 as shown in the connection diagram of FIG.
The connection between the cleaning liquid passage 50 and the cleaning liquid passage 50 is closed, or FIG.
As shown in the connection diagram (d), the connection between the connection passage 160 and the cleaning liquid passage 50 is narrowly opened. Then, through the milk passage 10, the first sub passage 40, the milking unit 30, the teat cup washer 80 and the second sub passage 90, the washing liquid passage 50 and the liquid sending passage 1 communicating therewith.
A suction force is generated at 70. Then, the cleaning liquid 60 in the tank 70 is passed through the liquid supply passage 170, the cleaning liquid passage 50, the second sub-passage 90, the teat cup washer 80, the milking unit 30, the first sub-passage 40, and the milk passage 10, and then into the receiver 20. Circulate to At that time, the cleaning liquid 60 circulating through the cleaning liquid passage 50 is
The cleaning liquid 60 circulating through the cleaning liquid passage 50 is prevented from being circulated to the milk passage 10 through the connection point between the connection passage 160 and the cleaning liquid passage 50 closed by using the cleaning liquid 60.
However, the amount circulated to the milk passage 10 through the connection portion between the connection passage 160 and the washing liquid passage 50, which is narrowly opened using the opening / closing throttle valve 190, is suppressed. Then, all or most of the cleaning liquid 60 circulating in the cleaning liquid passage 50 is circulated in a large amount into the milking unit 30. Then, the milking unit 30 is completely cleaned using the large amount of the cleaning liquid 60.

When the milk passage 10 is mainly washed, in addition to the above-described washing operation, the on-off valve 200 is operated to close the second sub-passage 90 or to close the second sub-passage 9.
0 and the throttle valve 1
By manipulating 90, a connection portion between the connection passage 160 and the cleaning liquid passage 50 is widely opened as shown in the connection diagram of FIG. Then, the suction force is generated in the cleaning liquid passage 50 and the liquid feeding passage 170 communicating with the cleaning liquid passage 50 through the milk passage 10, the connecting passage 160, and the connecting portion between the widely opened connecting passage 160 and the cleaning liquid passage 50. Then, the cleaning liquid 60 in the tank 70 is circulated into the receiver 20 through the liquid supply passage 170, the cleaning liquid passage 50, the connection passage 160, and the milk passage 10. At this time, the cleaning liquid 60 circulating in the cleaning liquid passage 50 passes through the second sub-passage 90 closed by the on-off valve 200 and passes through the teat cup washer 80.
It is prevented from circulating inside the milking unit 30 or the like. Alternatively, the cleaning liquid 60 circulating in the cleaning liquid passage 50 is kept open in the second sub-passage 9 having a high flow resistance.
0, inside the teat cup washer 80, inside the milking unit 30, through the first sub-passage 40, and the milk passage 10,
The amount circulating into the receiver 20 is reduced. Then, a large amount of the cleaning liquid 60 circulating in the cleaning liquid passage 50 is circulated to the milk passage 10. Then, the milk passage 10 is completely cleaned by the large amount of the cleaning liquid 60.

The cleaning liquid 60 used for cleaning the milk passage 10, the cleaning liquid passage 50, the connection passage 160, the milking unit 30, the first sub-passage 40, etc., and accumulated at the bottom of the receiver 20 is transferred to the transfer means 110. It is operated and returned into the tank 70. Then, the cleaning liquid 60 is repeatedly used for cleaning.

In the above-described milker, as shown in FIG. 1, the air injector 210 intermittently sends outside air to the liquid feed passage 170, and the liquid feed passage 170
From the washing liquid passage 50, the connection passage 160 and the milk passage 1
It is preferable to provide an air injector 210 that uses the cleaning liquid 60 that is sent to 0 as a plug flow. Air injector 21
The reference numeral 0 may be formed of a communication pipe for communicating the inside of the liquid feed passage 170 with the outside air, and a solenoid valve for opening and closing the pipe. The outside air may be sent into the liquid sending passage 170 through the connecting pipe using the suction force generated in the liquid sending passage 170 during the cleaning operation.

Then, using the air injector 210, the cleaning liquid 6 sucked up from the tank 70 into the liquid supply passage 170.
It is good to set 0 as plug flow. Then, the cleaning solution 60
May be circulated through the washing liquid passage 50, the connection passage 160, the milk passage 10, the second sub-passage 90, the teat cup washer 80, the milking unit 30, and the first sub-passage 40 which communicate with the liquid feed passage 170. Then, the cleaning liquid 60 having the plug flow is used to completely and completely clean the cleaning liquid passage 50, the connection passage 160, the milk passage 10, the milking unit 30, and the first sub-passage 40 through which the milk passes. It is good to be able to wash. In addition, the external air intermittently sent into the liquid feed passage 170 using the air injector 210 causes the liquid feed passage 17
It is preferable to apply a brake to the cleaning liquid 60 sucked up to zero to prevent the cleaning liquid 60 in the tank 70 from being excessively drawn into the liquid feed passage 170 and emptying the cleaning liquid 60 in the tank 70.

Further, in the above-mentioned milker, as shown in FIG.
A sub three-way switching valve 192 that opens and closes a connection point between the cleaning liquid passage 50 and the connection passage 60 and adjusts an opening degree of a connection point between the connection passage 160 and the cleaning liquid passage 50 to a wide and narrow position is provided with the connection passage 160 and the cleaning liquid passage 50. May be provided at the connection point. Then, the end of the connection passage 160 and the end of the cleaning liquid passage 50 may be connected to the two passage openings of the sub three-way switching valve 192. At the same time, the sub three-way switching valve 192
Is an air injector 212 in which the cleaning liquid 60 circulating in the sub three-way switching valve 192 is plugged into the remaining one passage opening, and air for intermittently sending outside air to the cleaning liquid 60 circulating in the sub three-way switching valve 192. An injector 212 may be provided.

In the case of the milker provided with the sub three-way switching valve 192, when the milking is performed, the sub three-way switching valve 192 is used.
To operate the connection passage 1 as shown in the connection diagram of FIG.
A connection portion between the cleaning liquid passage 60 and the cleaning liquid passage 50 can be widely opened.
Then, the milk that has flowed into the milk passage 10 can flow into the receiver 20 by dispersing the milk passage 10, the connection passage 160, and the cleaning liquid passage 50 that communicates with the milk passage 10.

When cleaning the washing liquid passage 50, the connection passage 160, the milk passage 10, and the like, the sub three-way switching valve 192 is operated to connect the connection passage 160 with the connection passage 160 as shown in the connection diagram of FIG. The connection point with the cleaning liquid passage 50 can be opened narrowly. At the same time, by operating the air injector 212, the cleaning liquid 6 circulating in the sub three-way switching valve 192 is
The outside air can be intermittently fed to zero. The cleaning liquid 6 circulating from the cleaning liquid passage 50 through the sub three-way switching valve 192 to the connection passage 160 and the milk passage 10
0 can be the plug flow. Then, the cleaning liquid 60 having the plug flow can completely clean even the portions where the inner walls of the connection passage 160 and the milk passage 10 are bent in an L-shape.

When the milking unit 30 is mainly cleaned, the sub three-way switching valve 192 is operated to close the connection between the connection passage 160 and the cleaning liquid passage 50, or to connect the connection passage 160 and the cleaning liquid passage. The connection point with 50 can be opened narrowly. Then, the cleaning liquid 60 is supplied to the cleaning liquid passage 5.
From the cleaning liquid passage 50 to the milk passage 10 or from the washing liquid passage 50 to the milk passage 10.
It is possible to reduce the amount of the cleaning liquid 60 flowing into the milk passage 10 through 60. Then, a large amount of the cleaning liquid 60 flowing through the cleaning liquid passage 50 is circulated into the milking unit 30 so that the milking unit 30 can be completely cleaned.

When the milk passage 10 is mainly washed, the connection between the connection passage 160 and the washing liquid passage 50 can be opened widely by operating the sub three-way switching valve 192. Then, a large amount of the cleaning liquid 60 flowing through the cleaning liquid passage 50 can flow into the milk passage 10 through the connection passage 160. At the same time, the air injector 212 is operated to operate the sub three-way switching valve 19.
The cleaning liquid 60 circulating through the inside 2 can be used as a plug flow, and the cleaning liquid 60 can flow into the connection passage 160 and the milk passage 10. Then, the milk passage 10 can be completely cleaned by the large amount of the cleaning liquid 60 in the plug flow.

[0063]

As described above, according to the milker of the present invention, a part of the milk passage can be used also as the washing liquid passage. The passage for flowing the milk is formed in the milk passage and the washing liquid passage so as to be long in a forked manner, so that the volume of the passage for flowing the milk can be sufficiently secured. Then, the milk passage and the washing liquid passage can have a role as a surge tank. Then, the milk is dispersed into the milk passage and the washing liquid passage in two hands and smoothly flows into the receiver, or the milk flows smoothly into the milk passage with the air from the milking unit connected to the downstream side of the milk passage with low resistance. In addition, the air that has flowed with the milk into the milk passage from the milking unit is separated from the milk and smoothly flows through the upper portion and the like in the milk passage, so that the air pressure in the milk passage can be substantially equalized. In addition, a third sub-passage for connecting the washing liquid passage to the milk passage, a first on-off valve for opening and closing the passage, and the like can be eliminated. And the piping structure can be greatly simplified and downsized. Further, simplification of the manufacture and simplification of the maintenance can be achieved.

By operating the opening / closing throttle valve or the sub three-way switching valve, it is possible to circulate a large amount of the washing liquid mainly in the milk passage or to circulate a large amount of the washing liquid mainly in the milking unit. Then, the milk passage or the milking unit can be thoroughly and efficiently cleaned completely.

[Brief description of the drawings]

FIG. 1 is a schematic structural explanatory view of a milker of the present invention.

FIG. 2 is a partial schematic structural explanatory view of a milker of the present invention.

FIG. 3 is a schematic structural explanatory view of a conventional milker.

[Explanation of symbols]

 Reference Signs List 10 milk passage 12 sub milk passage 20 receiver 30 milking unit 40 first sub passage 50 washing liquid passage 60 washing liquid 70 tank 80 teat cup washer 90 second sub passage 100 suction means 110 transfer means 120 cooler 130 third sub passage 140 first opening / closing valve 150 Second open / close valve 160 Connecting passage 170 Liquid feed passage 180 Three-way switching valve 190 Open / close throttle valve 192 Sub three-way switching valve 200 Open / close valve 210, 212, 214, 220 Air injector

Claims (3)

[Claims] 1. A milk passage and a sub-milk passage for conveying milk, one end of which is connected to each other via a receiver for collecting milk, a cleaning liquid passage for conveying a cleaning liquid, one end of which is connected to the other end of the sub-milk passage. A connection passage connecting the other end of the washing liquid passage to the other end of the milk passage; and a liquid feeding passage connecting the inside of the tank in which the washing liquid is stored and one end of the washing liquid passage, wherein the washing liquid in the tank is supplied. A three-way switching valve provided at a connection point between the liquid feeding passage, the cleaning liquid passage, and the sub-milk passage for feeding the liquid into the cleaning liquid passage, wherein the sub-milk passage is closed and the cleaning liquid passage and the liquid feeding passage are closed. Or a three-way switching valve that closes the liquid sending passage and connects the washing liquid passage and the sub-milk passage, and milk collected at the bottom inside the receiver. Transfer means for transferring milk to a cooler for storing milk, or a transfer means for transferring the cleaning liquid accumulated in the bottom of the receiver into the tank, and an opening / closing throttle valve provided at a connection point between the connection passage and the cleaning liquid passage. An opening / closing throttle valve for closing a connection point between the connection passage and the cleaning liquid passage, or adjusting an opening degree of a connection point between the connection passage and the cleaning liquid passage to be narrow and wide, and a suction unit for sucking gas in the receiver; A first sub-passage connecting the milking unit to the milk passage; a second sub-passage connecting the teat cup washer removably loaded with the milking unit to the cleaning liquid passage; and the second sub-passage. And a shut-off valve that opens and closes the car. 2. The parlor milker according to claim 1, further comprising an air injector for intermittently sending outside air to the liquid feed passage, the air injector having a plug flow of the washing liquid sent from the liquid feed passage to the milk passage. 3. A sub three-way switching valve that opens and closes a connection point between a connection passage and a cleaning liquid passage and adjusts an opening degree of a connection point between the connection passage and the cleaning liquid passage to be narrow or wide, instead of an on-off throttle valve. In preparation for the connection point between the connection passage and the washing liquid passage, the two passage ports of the sub three-way switching valve are connected to the end of the connection passage and the end of the washing liquid passage, and the other one of the sub three-way switching valve 3. An air injector which uses a cleaning liquid circulating in a sub three-way switching valve as a plug flow in a passage opening, and comprises an air injector for intermittently sending outside air to the cleaning liquid circulating in the sub three-way switching valve. Milker for parlor.