JP2015123441A - Cleaning method of pipeline milker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cleaning method of a pipeline milker, capable of improving working efficiency for collecting cleaning liquid residual water remaining in milk tubes 15 and 17, in a cleaning process of cleaning a milk pipe 30 by sucking a cleaning liquid from a milking unit 10.SOLUTION: The cleaning method of the pipeline milker involves executing the cleaning process of making the cleaning liquid flow from one end side of a milk pipe 30 to the other end side, the milk pipe 30 being encircled in a livestock barn 90 of becoming a milking site. In a stage of making the air flow in from the milking unit 10 when the cleaning liquid residual water of the cleaning process is collected, an on-off valve (a diaphragm valve 11a) arranged in a flow passage up to be connected to the milk pipe 30 from the milking unit 10 is opened and closed so as to make air intermittently flow in to the flow passage inside of continuing with the milk pipe 30 via the milk tubes 15 and 17 from the milking unit 10.

Description

  The present invention relates to a vacuum piping type milking system comprising milk piping connected to a receiver jar that is circulated in a barn serving as a milking site and both ends are temporarily stored in order to collect milk expressed by a milking unit. The present invention relates to a cleaning method for a machine (pipeline milker).

  For example, as shown in FIG. 1, the pipeline milker includes a pair of vacuum lines (milk piping 30 and vacuum piping 40) disposed in a barn (in the case of dairy cattle 90), the milk piping 30 and the vacuum piping 40. In addition, a vacuum pump 50 is connected via the distribution tank 51 to supply a vacuum pressure. The pressure in the pair of vacuum lines (milk pipe 30 and vacuum pipe 40) is adjusted to a predetermined constant pressure by a vacuum pressure regulator 41 or the like, so that the milk pipe 30 is, for example, around 50 kPa, and the vacuum pipe 40 is, for example, 50 kPa. Before and after. The milk pipe 30 passes through the main body of the vacuum pipe 40 via the receiver jar 32, the vacuum connection pipe 39, the sanitary trap 38 for separating liquid and air, and the vacuum connection pipe 49, and further via the distribution tank 51. Connected to the vacuum pump 50. The receiver jar 32 is installed in the processing chamber 80, and the vacuum pump 50 and the distribution tank 51 are installed in a machine room provided separately from the processing chamber 80.

  Reference numeral 15 denotes a milk tube, which is connected to send milk squeezed by the milking unit 10 to the automatic detachment device 20 with a milk meter. Reference numeral 30 a denotes a milk pipe for washing, which is branched from the milk pipe 30 and is installed in the processing chamber 80. Reference numeral 40a denotes a vacuum pipe for cleaning, which is branched from the vacuum pipe 40 and is provided alongside the milk pipe 30a for cleaning. Reference numeral 31 denotes a cleaning tap, and each of a milk tube 17 and a vacuum tube (not shown) for connecting a milk pipe extending from the automatic removal device 20 with a milk meter has a corresponding milk pipe 30a for cleaning and a cleaning pipe. It is provided so as to be detachably connected to each of the vacuum pipes 40a.

  A milking tap (not shown) is connected to the barn 90 so that a milk tube 17 and a vacuum tube (not shown) for connecting a milk pipe extending from the automatic detaching device 20 with a milk meter are detachably connected. Are provided for a pair of vacuum lines (milk pipe 30 and vacuum pipe 40). The milk squeezed by the milking unit 10 having the teat cup 12 and the milk claw 11 (see FIG. 2) as constituent elements is a milk tube 15 and a milk meter due to the differential pressure between the vacuum pressure generated in the milk claw 11 and the atmospheric pressure. It is transported to the milk pipe 30 via the automatic detaching device 20 and the milk pipe 17 for connecting the milk pipe. The milk pipe 30 is arranged at the highest position farthest from the receiver jar 32 that temporarily stores the milk, and the entrance connected to the receiver jar 32 is arranged at the lowest position. The milk transported from the milking unit 10 is sent to the milk pipe 30, and then sent to the receiver jar 32 due to the height difference of the milk pipe 30 and the pressure difference between the receiver jar 32 and the milk claw 11. The milk stored in the receiver jar 32 is sent from the bottom of the receiver jar 32 to the bulk cooler (not shown) by the milk pump 33 through the water supply tube 34 connected to the in-line filter 33a of the pump 33. Stored. Reference numeral 36 denotes an air injector, which is provided so that the milk can be transported by introducing the atmosphere into the milk pipe 30.

  Such a pipeline milker is provided with a cleaning device for the purpose of pre-cleaning the milking unit 10 and the milk pipe 30 before the start of milking and for cleaning the milk passage area after milking. The cleaning device includes a cleaning tank 60 having an open upper surface and a cleaning liquid supply device 70. The cleaning liquid supply device 70 includes a hot water supply pipe (not shown), a water supply pipe (not shown), and a disinfectant supplier 71. , An acid detergent supply device 72 and an alkaline detergent supply device 73, and the supply ports for the respective cleaning liquids are arranged so as to face the cleaning tank 60. In addition, the cleaning tank 60 has a drain opening at the bottom, and a drain valve 61 for opening and closing a drain pipe connected to the drain. On the other hand, the water supply tube 34 connected to the in-line filter 33 a of the milk pump 33 is connected to the cleaning tank 60 during the cleaning process, and the cleaning liquid can be returned to the cleaning tank 60.

In the cleaning apparatus having such a configuration, first, the water supply tube 34 is connected to the in-line filter 33a of the milk pump 33, and at the same time, the cleaning tank 60 is filled with the cleaning liquid. By connecting the milk tube 17 for milk piping connection to the cleaning tap 31, the milking unit 10 is connected to the milk piping 30 via the milk meter automatic detaching device 20 and the milk tube 15. Then, the gate valve 35 is closed, the cleaning liquid is sucked from the teat cup 12 of the milking unit 10, and the milk claw 11, the milk tube 15 of the milking unit 10, the automatic removal device 20 with a milk meter, and milk for milk piping connection are used. The cleaning liquid is fed into the milk pipe 30 via the tube 17.
That is, the cleaning liquid is sucked up through the milking unit 10 (see FIGS. 2 and 10 to 10) that is suspended so as to be immersed in the cleaning liquid in the cleaning tank 60 and reaches the milk pipe 30. And the washing | cleaning liquid which flowed into the receiver jar 32 through the milk piping 30 returns to the washing tank 60 again via the water supply tube 34 from the milk pump 33.

  In the washing step, usually, milk components are first washed away with lukewarm water that does not denature milk proteins and the like, then the fat is decomposed and washed with hot alkaline water, and if necessary, the calcium salt is washed by acid washing. Remove the inorganic salts and rinse with warm water. The milking unit 10 has one milk claw 11 and four teat cups 12 corresponding to each quarter of the cow in the case of a normal cow. In this teat cup 12, a teat cup shell is internally provided with a cylindrical rubber liner, thereby dividing the inside of the teat cup into a milk flow path inside the liner and an air chamber outside. The inner milk flow path is connected to the milk pipe 30, and the outer air chamber is connected to the connection port on the side surface of the teat cup, etc., and a pulsator 22 a (see FIG. 3 (c)) to the vacuum pipe 40.

  Regarding such a vacuum pipe type milking machine (pipeline milker), the present applicant has previously proposed an invention relating to a method for cleaning the milk pipe. According to this, in order to collect the milk expressed by the milking unit operated by the vacuum pressure of the vacuum pump, it is made up of stainless steel pipes and circulated in a barn where the milking takes place. A milk pipe whose both ends are connected to a receiver jar that is stored in a closed manner, a gate valve provided in the vicinity of one end of the milk pipe is closed, and a cleaning liquid is allowed to flow from one end side of the milk pipe to the other end side An opening / closing valve for opening to the atmosphere provided on one end of the milk pipe connected to a position farther from the receiver jar than the installation position of the gate valve so that the cleaning liquid is sent to the receiver jar. A method of cleaning a pipeline milker that sends the cleaning liquid by operating, wherein the milk pipe is a part of the milk pipe that is circulated in the barn. By controlling the opening and closing of the on-off valve for opening to the atmosphere according to the detection value by the vacuum pressure sensor arranged at a desired position, the vacuum pressure in the milk pipe can be varied within an arbitrary setting range, and the cleaning liquid can be changed. The piping is cleaned by sending it intermittently (see Patent Document 1).

  However, in the cleaning liquid recovery process in the conventional pipeline milker cleaning method, all the milking units 10 are opened, the degree of vacuum of the milk pipe 30 is rapidly reduced, and the milking unit 10 and the milk meter (with a milk meter) The cleaning liquid inside the automatic detachment apparatus 20) may not be collected. If the cleaning liquid remains as residual water, an operation of draining before milking is required, and work efficiency is reduced. Also, during winter, drainage work is required after completion of automatic washing to prevent freezing. Depending on the situation, thawing work may be required before milking work, and troubles due to equipment damage may occur.

  Further, in the method of cleaning using the cleaning tank 60 described above, it is difficult to hold the cleaning liquid suction ports (mouse portions of the teat cup 12) of the plurality of milking units 10 at the same plane as the cleaning liquid level. In the air recovery process, there are a mixture of air sucking and a cleaning liquid sucking. For this reason, in the milking unit 10 that sucks the cleaning liquid to the end, the degree of vacuum in the milk pipe 30 is remarkably lowered, so that the cleaning liquid is not sucked up to the milk pipe 30 and residual water is generated.

JP 2012-5963 A (first page)

According to the conventional method, the problem to be solved with regard to the washing method of the pipeline milker was effective in improving the washing efficiency with respect to the circulation washing of the milk pipe. It is difficult to recover efficiently.
Accordingly, an object of the present invention is to provide a method for cleaning a pipeline milker that can improve the working efficiency of recovering residual cleaning liquid remaining in a milk tube or the like in a cleaning process of sucking a cleaning liquid from a milking unit and cleaning a milk pipe. There is.

The present invention has the following configuration in order to achieve the above object.
According to one aspect of the method of cleaning a pipeline milker according to the present invention, in order to collect milk expressed by a milking unit that is operated by the vacuum pressure of a vacuum pump, a milk pipe is circulated in a barn serving as a milking site. , Closing a gate valve provided near one end of the milk pipe connected at both ends to a receiver jar for temporarily storing milk, and allowing the cleaning liquid to flow from one end side to the other end side of the milk pipe In the method of cleaning a pipeline milker that performs a cleaning process, when air flows from the milking unit when the cleaning liquid remaining in the cleaning process is collected, the milking unit continues to the milk pipe via a milk tube. Open and close the on-off valve arranged in the flow path from the milking unit until it is connected to the milk pipe so that air can flow intermittently into the flow path To work.

Further, according to one aspect of the washing method for a pipeline milker according to the present invention, the opening / closing valve is a diaphragm valve provided in a milk claw of the milking unit, and the milking unit is operated by opening / closing the diaphragm valve. To control intermittent air inflow to the milk pipe.
According to another aspect of the method for cleaning a pipeline milker according to the present invention, the on-off valve is a diaphragm valve provided in the milk tube, and the milk from the milking unit is operated by opening / closing the diaphragm valve. It is possible to control intermittent air inflow to the pipe.

Moreover, according to one form of the washing method of the pipeline milker which concerns on this invention, the automatic removal apparatus with a milk amount meter is provided between the flow paths connected to the said milk piping from the said milking unit, and this milk amount meter The open / close valve detects the presence or absence of cleaning liquid with an electric conductivity sensor in a milk pot disposed in the automatic detaching device, detects that the air is flowing in and collects the cleaning liquid residual water, By opening and closing the air, air can be intermittently introduced.
Moreover, according to one form of the washing | cleaning method of the pipeline milker which concerns on this invention, the said milking unit is divided into several groups, and it opens and closes the said on-off valve for every said group, and the said milk piping is carried out. It is characterized by controlling so as to suppress the inflow of air.

  According to the method for cleaning a pipeline milker according to the present invention, the cleaning process of sucking the cleaning liquid from the milking unit and cleaning the milk piping can improve the working efficiency of recovering the remaining cleaning liquid remaining in the milk tube or the like. There is an advantageous effect.

It is a system diagram showing a form example of a pipeline milker according to the present invention. It is explanatory drawing which shows the example of a form from a milking unit to a milk piping and a vacuum piping so that the washing | cleaning liquid residual water state at the time of the milk piping vacuum degree fall concerning this invention may be shown. It is a front view (a), a side view (b), and a cross-sectional view (c) of a switching valve storage box showing an embodiment of an automatic separating device with a milk meter according to the present invention. It is sectional drawing (a) and the side view (b) of the milk amount pot of the milk meter provided in the automatic removal apparatus with the milk meter which concerns on this invention. Sectional view (a) showing a state during measurement, and sectional view (b) showing a state during drainage, in the circulation washing step of sucking up the washing liquid from the milking unit for the milk amount pot of the milk meter according to the present invention ). It is a washing | cleaning-liquid collection | recovery process which is not sucking up the washing | cleaning liquid from the milking unit about the milk | milk amount pot which concerns on this invention, Comprising: In sectional drawing (a) which shows the state of opening, sectional drawing (b) which shows the state of closing is there. It is sectional drawing which shows the form example of the milk claw which concerns on this invention. It is explanatory drawing in the washing tank at the time of the circulation washing process which concerns on this invention, and the state of the opening / closing operation | movement of a diaphragm valve. It is explanatory drawing in the washing tank and the state of the opening / closing operation | movement of a diaphragm valve at the time of the circulation washing | cleaning process which concerns on this invention, and a washing | cleaning liquid collection | recovery process. It is explanatory drawing in the washing | cleaning tank at the time of the washing | cleaning liquid collection | recovery process at the time of dividing the several milking unit which concerns on this invention into multiple groups, and the state of the opening / closing operation | movement of a diaphragm valve. It is an operation | movement time chart of the washing | cleaning process in the washing | cleaning method of the pipeline milker which concerns on this invention, Comparing the conventional operation | movement and the operation | movement after improvement. It is an operation | movement time chart of the washing | cleaning process at the time of dividing several milking units into the group in the washing | cleaning method of the pipeline milker which concerns on this invention.

Hereinafter, an embodiment of a method for cleaning a pipeline milker according to the present invention will be described in detail with reference to the accompanying drawings (FIGS. 1 to 12).
In the present invention, in order to collect milk milked by the milking unit 10 operated by the vacuum pressure of the vacuum pump 50, the milk pipe 30 is circulated in a barn 90 serving as a milking site, and the receiver temporarily stores the milk. A pipeline that performs a cleaning process in which a gate valve 35 provided in the vicinity of one end of the milk pipe 30 having both ends connected to the jar 32 is closed and a cleaning liquid is supplied from one end side of the milk pipe 30 to the other end side. The present invention relates to a milker cleaning method.

  The overall configuration of the machine configuration for carrying out the present invention is as described in the section of “Background Art” based on FIG. 1, and the following is a milking unit as a main part according to the present invention. A configuration example in which the milk pipe 30 and the vacuum pipe 40 are connected to the milk pipe 30 through the automatic detachment apparatus 20 with a milk meter 10 will be described in detail.

As shown in FIG. 2, the automatic detachment apparatus 20 with a milk meter according to this embodiment includes a control board unit 21, a switching valve storage box 22, and a milk pot 23 as constituent elements. The automatic detachment device with milk meter 20 is connected to the milking unit 10 by a milk tube 15 and is connected to the milk pipe 30 by a milk tube 17 for connecting the milk pipe.
According to this configuration, as shown in FIG. 2, when the degree of vacuum of the milk pipe 30 is lowered, the cleaning liquid residual water tends to accumulate in the milk tube 15 and the milk tube 17 for connecting the milk pipe. This is because the milk tube 15 and the milk tube 17 for connecting the milk pipe are constituted by flexible tubes that are easily bent downward.

Further, as shown in FIG. 3 (a), the automatic detachment device with a milk meter 20 includes a milk tube 17 for connecting a milk pipe and a connecting portion 28 provided at the end of a vacuum tube (not shown). ing. The connection portion 28 includes a milk pipe connection port 28a, a vacuum pipe connection port 28b, and a power plug 28c.
Furthermore, this automatic detachment apparatus with a milk meter 20 operates a valve control diaphragm 24 provided in a pulsator 22a and a milk volume pot 23 in a switching valve storage box 22, as shown in FIG. 3 (c). A three-way valve 22b for a milking valve as a switching valve, a three-way valve 22c for a milking unit as a switching valve for operating the diaphragm valve 11a built in the milk claw 11, and a separation motor 22d, respectively. Is connected to the vacuum pipe 40 via a vacuum tube (not shown). Moreover, the vacuum nipple 22e for the milking unit opening / closing valve is arranged in a state protruding from the lower surface to the outside. A diaphragm valve control tube, which is one of the triple tubes 16 (see FIG. 2), is connected to the vacuum nipple 22e, and the tube is connected to the vacuum nipple 11b (see FIG. 7) of the milk claw 11. . According to this, when the three-way valve 22c for milking unit as the switching valve is controlled to open / close, the diaphragm valve 11a of the milk claw 11 can be opened / closed to open / close the fluid suction.

Next, an example of the milk amount pot 23 of the milk meter and its operating state will be described with reference to FIGS.
As shown in FIG. 4A, the milk amount pot 23 of the present embodiment includes an inlet 23a connected to the milking unit 10, an outlet 23b connected to the milk pipe 30, and a diaphragm vacuum nipple 24a. Moreover, as shown in FIG.4 (b), the valve control diaphragm 24, the electrode sensor 25, the air pipe 26, and the breast pump 27 are provided. Milked milk is flowed from the inlet 23a to the milk amount pot 23, weighed, and discharged from the outlet 23b.

An example of the operation of the milk amount pot 23 will be described with reference to the state diagrams of FIGS.
FIG. 5 shows the state of the inside of the milk amount pot 23 when the cleaning liquid is being sucked up from the milking unit 10 in the circulation cleaning process in a state where the cleaning liquid is present in the cleaning tank 60.
During the cleaning process, the milk discharge valve 27 is opened and closed by the valve control diaphragm 24 at a constant cycle. During the washing water circulation, the electrical conductivity value (AD value) of the electrode sensor periodically decreases. That is, as shown in FIG. 5A, when the milk discharge valve 27 is closed, the cleaning liquid accumulates in the milk amount pot 23, and the AD value decreases. Under this circumstance, the diaphragm valve 11a of the milking unit 10 is kept open.

FIG. 6 shows a state inside the milk amount pot 23 when the cleaning liquid is not sucked up from the milking unit 10 in the state after the cleaning liquid in the cleaning tank 60 is drained in the cleaning liquid recovery step. According to this milk amount pot 23, the inflow state of air can be detected as follows so as to operate the diaphragm valve 11a of the milk claw 11.
During the cleaning process, the milk discharge valve 27 is opened and closed by the valve control diaphragm 24 at a constant cycle. During the cleaning liquid recovery process, since the cleaning liquid is not sucked up, the AD value of the electrode sensor remains large. That is, as shown in FIG. 6 (a), even when the milk discharge valve 27 is closed, the cleaning liquid does not accumulate in the milk amount pot 23, so that the AD value remains unchanged. When the state larger than the set AD value continues for the set time or longer, the diaphragm valve 11a of the milking unit 10 is shut off. The opening and closing of the diaphragm valve 11a is repeated at a set cycle, and the residual water in the milking unit is collected. By closing the set time, the inflow of air is cut off and the degree of vacuum is stabilized. And if the vacuum degree in milk piping is stabilized, set time will be set and air will be made to flow in rapidly.

Next, the example of the form of the milk claw 11 is demonstrated based on FIG.2 and FIG.7.
According to the milk claw 11 of this embodiment, a vacuum nipple 11b, a plurality of teat cup connection ports 11c connected to the teat cup 12, and a milk tube connection port 11d connected to the milk tube 15 are provided, and the diaphragm valve 11a Is built-in. The vacuum nipple 11b is connected to the vacuum nipple 22e of the automatic removal device 20 with a milk meter by a diaphragm valve control tube of the triple tube 16 (see FIG. 2). In the milk claw 11, the passage from the vacuum nipple 11b is connected to the diaphragm valve 11a, and the opening / closing control of the diaphragm valve 11a is performed by operating the milking unit three-way valve 22c. That is, when a vacuum pressure is applied from the milking unit three-way valve 22c to the diaphragm valve 11a via the vacuum nipple 11b, the diaphragm valve 11a is opened. By opening and closing the diaphragm valve 11a, the opening and closing operation can be performed for the inflow of fluid from the teat cup 12 side. As shown in FIG. 2, a short milk tube 13 of the teat cup 12 extends from the teat cup 12 and is connected to the milk claw 11. Moreover, as shown in FIG. 2, it is the connection tube 14 for pulsators, and is connected to the connection port provided in the shell of the teat cup 12. These configurations are known, and the description of the operation for milking is omitted.

Below, the operation | movement structure concerning the washing | cleaning method of the pipeline milker of this invention is demonstrated in detail.
At the stage where air flows in from the milking unit 10 when collecting the washing liquid residual water in the washing process, the milking unit 10 passes through the milk tube (milk tube 15 or milk tube 17 for milk piping connection) to the milk pipe 30. Open / close valves such as the diaphragm valve 11a disposed in the flow path from the milking unit 10 to the milk pipe 30 are opened and closed so that air is intermittently flowed into the continuous flow path.

  According to this, the degree of vacuum of the milk pipe 30 can be stabilized, and the cleaning liquid can be evenly collected even when many milking units 10 are used. That is, by controlling the air inflow from the milking unit 10 (intermittent operation), the reduction in the vacuum degree in the milk pipe 30 is suppressed and the constant vacuum degree is maintained, thereby increasing the flow rate (suction force) of the recovered air, and the cleaning liquid The recovery rate of residual water can be improved. The air inflow is repeated intermittently, and the cleaning liquid residual water staying in a lump at the lowest position of the milk tube 15 and the milk tube 17 for connecting the milk pipe is pushed out at once, thereby achieving a higher recovery effect than when air is continuously inflowed. Can be obtained. Further, the cleaning liquid can be efficiently recovered even with a small pump displacement, the operation load of the vacuum pump 50 is reduced, and the vacuum pump 50 having a small vacuum capacity can be used. According to this, equipment cost reduction and energy saving by power saving can be realized.

  As the on-off valve for controlling the air inflow described above, a vacuum drive type diaphragm valve 11 a with a built-in milk claw 11 of the milking unit 10 can be used. That is, the opening / closing valve is a diaphragm valve 11a provided in the milk claw 11 of the milking unit 10, and the intermittent air inflow from the milking unit 10 to the milk pipe 30 is controlled by opening / closing the diaphragm valve 11a. be able to.

According to this, it is possible to take measures against residual water in the milking unit 10, the milk tube 15, and the milk tube 17 for connecting the milk pipe only by changing the control program of the automatic withdrawal device with milk meter 20 of the current product.
In the case where a plurality of milking units 10 are used, a diaphragm valve for controlling the air inflow is controlled in order to control the operation of the on / off valve (diaphragm valve 11a) of the milk claw 11 by detecting individual electric conductivity values (AD values). 11a operates at random, easily maintains the degree of vacuum of the milk pipe 30, and can efficiently recover the cleaning liquid.

  When the on / off valve such as the diaphragm valve 11a is not built in the milk claw 11, the same effect can be obtained by, for example, a vacuum drive type diaphragm shut-off valve (diaphragm valve) arranged on the milk tube 15 line. Can do. That is, the opening / closing valve is a diaphragm valve provided in the milk tube 15, and intermittent air inflow from the milking unit 10 to the milk pipe 30 is controlled by opening / closing the diaphragm valve.

Next, an operation control method for executing the above-described operation configuration will be described.
In this embodiment, an automatic detachment device 20 with a milk meter is provided between the milking unit 10 and a flow path connected to the milk pipe 30, and a milk pot 23 arranged in the automatic detachment device 20 with the milk meter. The electrode sensor 25 as an electric conductivity sensor in the inside determines the presence or absence of the cleaning liquid, detects that it is a process of collecting the cleaning liquid residual water at the air inflow stage, and opens and closes the on-off valve to open and close the air Is intermittently introduced (see FIG. 9). As the on-off valve, for example, the diaphragm valve 11a which is a vacuum switching valve built in the milk claw 11 as described above can be used.

  Whether it is a cleaning liquid circulation process or an air recovery process is determined by detecting electrical conductivity values (AD values) in the respective processes of rinsing, alkaline cleaning, acidic cleaning, sterilizing liquid, and air recovery. That is, the electric conductivity value is different in each process of rinsing, alkaline cleaning, acidic cleaning, sterilizing liquid, and air recovery, and the electric conductivity value approaches a predetermined value in the absence of the cleaning liquid in the air recovery process. Then, by detecting the electric conductivity value in the milk meter (in the milk pot 23), it is determined whether it is the cleaning liquid circulation process or the air recovery process.

In addition, a threshold value related to the electrical conductivity value (AD value) during the air recovery process is set, and when the threshold value is continuously exceeded for a certain time or more, it is determined that there is no cleaning liquid and the milk claw 11 Valves that open and close the flow path such as the built-in diaphragm valve 11a can be intermittently operated.
According to the above operation | movement structure, the air inflow to the milk piping 30 can be suppressed by the opening / closing control of the milking unit 10 (milk claw valve). Of course, the ON / OFF time (time interval) of air inflow is appropriately set so that a stable vacuum can be obtained during the cleaning liquid recovery process.

  Moreover, by dividing the plurality of milking units 10 into a plurality of groups and performing the opening / closing operation of the opening / closing valve for each group, it is possible to control to suppress the inflow of air into the milk pipe 30. That is, by dividing the milking units 10 into groups, it is possible to set the opening / closing start timing of the other group of opening / closing valves (diaphragm valve 11a) to be delayed at a predetermined interval with respect to one group. According to this, it is possible to prevent all of the plurality of milking units 10 from being operated intermittently in synchronism, and it is possible to prevent a rapid decrease in the degree of vacuum of the milk piping due to simultaneous air inflow from a large number of units. When the electric conductivity value (AD value) is equal to or lower than the set value, the diaphragm valve 11a is kept open.

About the above operation control method, the relationship between the water level of the washing tank 60 and the control operation of the diaphragm valve 11a will be described with reference to the time charts of FIGS.
FIG. 8 shows the state of the cleaning tank 60 and the like during the circulating cleaning process in which the cleaning liquid in the cleaning process is circulated. In this state, the water level of the cleaning liquid in the cleaning tank 60 rises and falls, but the suction port of the teat cup 12 is immersed in the cleaning liquid. At this time, the vacuum three-way valve 22c is controlled by the control board unit 21 so that the diaphragm valve 11a is opened.

FIG. 9 shows the control operation in a situation where switching between the circulation cleaning process and the cleaning recovery process is performed.
If only air continues to flow for the set time or longer, the electrical conductivity value (AD value) of the electrode sensor 25 (see FIGS. 4 to 6) in the milk pot is equal to or longer than the set time T1 (see FIGS. 11 and 12). During this time, the set value (the threshold for no cleaning liquid) or more is maintained. Thereby, each independent control board (control board unit 21) judges with a washing liquid recovery process. At the set timing, the diaphragm valve 11a is opened and closed to suppress the vacuum degree in the milk pipe 30 from being lowered. That is, an intermittent opening / closing operation is performed, which is an operation of closing a predetermined constant time T2 (see FIGS. 11 and 12) and opening a predetermined constant time T3 (see FIGS. 11 and 12). In addition, the time interval of T1-3 is suitably set according to the cleaning conditions.
In addition, when the electrical conductivity value (AD value) of the electrode sensor 25 in the milk amount pot 23 becomes equal to or less than a set value (no washing liquid threshold) for a set time or more, each independent control board (control board) The unit 21) determines that it is a circulating cleaning process in which the cleaning liquid is circulating, and holds the opening operation of the diaphragm valve 11a.

  FIG. 10 is a control method for preventing a decrease in the degree of vacuum in the milk pipe 30 when the number of milking units 10 is large, and the control setting value of the opening / closing timing is changed between the group A and the group B. The operation control state in the case is shown. According to the present embodiment, the opening / closing start timing of one group is delayed (T4 (see FIG. 12)) so that all the groups are not simultaneously opened / closed.

Time charts for the embodiment of the operation control method described above are shown in FIGS.
FIG. 11 is an operation time chart at the time of cleaning, and shows a comparison between the conventional operation and the improved operation. DC24V power supply (cleaning mode), drainage valve (milk volume pot), AD sensor AD value (milk volume pot), diaphragm valve (milking unit), drain valve (cleaning tank), cleaning tank cleaning liquid amount, milk piping The relationship between the degree of internal vacuum and the residual water in the milk tube is shown. The content of the operation control is as described above, and the description is omitted.

Moreover, FIG. 12 is an operation time chart for “milking unit block division” cleaning when a plurality of milking units 10 are divided into two groups, and shows comparison between block A and block B. . The relationship about the element similar to FIG. 11 is shown. The content of the operation control is as described above, and the description is omitted.
In addition, the control apparatus provided in the control board unit 21 which performs the above control can be comprised with a computer control system or a sequence control system. It is also possible to provide display means for displaying the measurement values of each sensor, and an operator can manually adjust and control various devices based on the display data.

  As described above, the present invention has been described in various ways with preferred embodiments. However, the present invention is not limited to these embodiments, and many modifications can be made without departing from the spirit of the invention. That is.

DESCRIPTION OF SYMBOLS 10 Milking unit 11 Milk claw 11a Diaphragm valve 11b Vacuum nipple 11c Teat cup connection port 11d Milk tube connection port 12 Teat cup 13 Teat cup short milk tube 14 Pulsator connection tube 15 Milk tube 16 Triple tube 17 For milk piping connection Milk tube 20 Automatic withdrawal device with milk meter 21 Control board unit 22 Switch valve storage box 22a Pulsator 22b Three-way valve for milking valve 22c Three-way valve for milking unit 22d Removal motor 22e Vacuum nipple 23 Milk volume pot 23a Inlet 23b Outlet 24 Valve control diaphragm 24a Vacuum nipple for diaphragm 25 Electrode sensor 26 Air pipe 27 Milking valve 28 Connection 28a Milk piping connection Port 28b Vacuum piping connection port 28c Power plug 30 Milk piping 30a Milk piping for cleaning 31 Cleaning tap 32 Receiver jar 33 Milk pump 33a In-line filter 34 Water supply tube 35 Gate valve 36 Air injector 38 Sanitary trap 39 Vacuum connection piping 40 Vacuum piping 40a Vacuum piping for cleaning 41 Vacuum regulator 49 Vacuum connection piping 50 Vacuum pump 51 Distribution tank 60 Cleaning tank 61 Drain valve 70 Cleaning liquid supply device 71 Disinfectant supply device 72 Acid detergent supply device 73 Alkaline detergent supply device 80 Processing room 90 Barn

Claims (5)

In order to collect the milk expressed by the milking unit operated by the vacuum pressure of the vacuum pump, the milk pipe is circulated in the barn where the milking takes place and both ends are connected to a receiver jar that temporarily stores the milk. In a washing method of a pipeline milker that closes a gate valve provided in the vicinity of one end of a milk pipe and performs a washing step of flowing a washing liquid from one end side of the milk pipe to the other end side,
In the stage where air flows from the milking unit when collecting the cleaning liquid residual water in the cleaning process, air is intermittently flowed from the milking unit into a flow path that is continuous with the milk pipe via a milk tube. As described above, the pipeline milker washing method is characterized in that the on-off valve disposed in the flow path from the milking unit to the milk pipe is opened and closed.   The opening / closing valve is a diaphragm valve provided in a milk claw of the milking unit, and the intermittent air inflow from the milking unit to the milk pipe is controlled by opening / closing the diaphragm valve. The method for washing a pipeline milker according to claim 1.   2. The on-off valve is a diaphragm valve provided in the milk tube, and intermittent air inflow from the milking unit to the milk pipe is controlled by opening / closing the diaphragm valve. The method of cleaning a pipeline milker as described.   An automatic detachment device with a milk meter is provided between the milking unit and a flow path connected to the milk pipe, and a cleaning liquid is provided by an electric conductivity sensor in a milk amount pot arranged in the automatic detachment device with milk meter. The air is intermittently introduced by opening and closing the on-off valve by detecting whether or not there is, detecting that it is a step in which air flows in and recovering cleaning liquid residual water. Item 4. A method for cleaning a pipeline milker according to any one of Items 1 to 3.   The said milking unit is divided into several groups, and it controls so that the inflow of the air to the said milk piping may be suppressed by performing the opening / closing operation | movement of the said on-off valve for every said group. The washing method of the pipeline milker in any one of -4.

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