JP2012005963A - Method for cleaning pipeline milker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for cleaning a pipeline milker by which the inside of the piping of a milk transportation line in a barn can be properly cleaned within a minimum operating time of equipment by using a monitoring device for monitoring the internal state of the piping exactly and in a real time.SOLUTION: A milk transportation line 10 is connected, at both ends thereof, to a receiver jar 17 temporarily storing milk milked by milking units so as to collect the milked milk, the method for cleaning a pipeline milker supplies cleaning liquid to the milk transportation line by closing a gate valve provided in the vicinity of one end of the milk transportation line 10 and operating a stop valve 31 for releasing pressure. In the method, the opening/closing of the stop valve 31 for releasing pressure is controlled according to a value detected by a vacuum sensor 21 disposed at an optional position on the milk transportation line 10 arranged in the barn 40 thereby fluctuating a degree of a vacuum in the milk transportation line 10 within an optional set range to supply the cleaning liquid intermittently.

Description

  In order to collect milk milked by a milking unit, the present invention is made up of a stainless steel pipe and circulated in a barn serving as a milking site, and both ends are connected to a receiver jar for temporarily storing milk. The present invention relates to a cleaning method for a vacuum piping type milking machine (pipeline milker) provided with a milk transport line.

  In the pipeline miller, for example, as in the conventional embodiment shown in FIG. 6, a pair of vacuum lines (milk transport line 101, vacuum supply line 102) are arranged in a barn (in the case of dairy cattle). A vacuum pump 103 is connected via a distribution tank 104 to supply a vacuum pressure. The pressure in the pair of vacuum lines 101 and 102 is adjusted to a predetermined constant pressure by the vacuum pressure regulators 105 and 106, and the milk transport line 101 (for example, 60 kPa) and the vacuum supply line 102 (for example, around 47 kPa). )

  Reference numeral 109 denotes a connection port of the milking unit, which is provided across a pair of vacuum lines 101 and 102. Milk squeezed by a milking unit including the teat cup 111, the milk claw 112, the pulsator 113, and the like is transported to the milk transport line 101 by the differential pressure between the vacuum pressure generated in the milk claw 112 and the atmospheric pressure. The milk transport line 101 is disposed at the highest position farthest from the receiver jar 107 that temporarily stores the milk, and the entrance connected to the receiver jar 107 is disposed at the lowest position. The milk transported from the milking unit is sent to the milk transport line 101 and then sent to the receiver jar 107 due to the height difference of the milk transport line 101. The milk stored in the receiver jar 107 is sent from the bottom of the receiver jar 107 to the bulk cooler 120 through the tube 123 connected to the discharge side piping 121 of the pump by the milk pump 108 and stored. A filter 124 is provided in the discharge side pipe 121.

  Such a pipeline milker is provided with a cleaning device for the purpose of pre-cleaning the milking unit and the milk transport line 102 before the start of milking and for cleaning the milk passage area after milking. The cleaning device includes a cleaning tank 80 having an open upper surface and a cleaning liquid supply device 90. The cleaning liquid supply device 90 includes a hot water supply pipe 91, a water supply pipe 92, a sterilizing agent supply apparatus 93, an acid detergent supply apparatus 94, an alkali. A detergent supply device 95 is provided, and each cleaning liquid supply port is arranged to face the cleaning tank 80. Further, a drainage port 81 is opened at the bottom of the washing tank 80, and a drainage pipe 82 is connected to the drainage port 81. A drain valve 83 opens and closes the drain port. On the other hand, one end of a discharge pipe 122 for the cleaning liquid can be connected to the discharge side pipe 121 of the milk pump 108, and the other end of the discharge pipe 122 reaches the cleaning tank 80 and opens into the tank. A milking unit connection port 109 that extends across the pair of vacuum lines 101 and 102 is also provided in the upper vicinity of the cleaning tank 80.

  In the cleaning apparatus having such a structure, first, the cleaning water discharge pipe 122 is connected to the discharge side pipe 121 of the milk pump, and at the same time, the cleaning tank 80 is filled with cleaning water, and the milking unit is connected to the connection port 109 of the milking unit. Link. Then, the gate valve 130 is closed, the washing water is sucked from the teat cup 111 of the milking unit, and sent to the milk transport line 101 via the milk claw 112 and the milk tube of the milking unit. The washing water that has passed through the milk transport line 101 and has flowed into the receiver jar 107 is returned again to the washing tank 80 via the discharge pipe 122 by the milk pump 108.

  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. In the case of a normal cow, the milking unit has one milk claw 112 and four teat cups 111 corresponding to each quarter of the cow. In the teat cup 111, the 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 transport line 101, and the outer air chamber is connected to the vacuum supply line 102 via a vacuum tube and a pulsator 113 connected to the connection port on the side of the teat cup.

  About such a vacuum piping type milking machine, the present applicant has previously proposed the invention concerning the pipeline cleaning mechanism (see Patent Document 1). According to this, the cleaning liquid accumulated in the rear part of the pipeline for milk conveyance is slag-flowed using the air pressure of the air supplied to the rear end of the pipeline from the open / close valve for opening air (air injector) in the ON operation state. In the pipeline cleaning mechanism of the milking apparatus that circulates the pipeline in a state where the atmospheric pressure is lower than the rear part of the pipeline and discharges it to the receiver connected to the end of the pipeline, the air injector is turned off. Then, the cleaning liquid in the cleaning tank is sucked into the pipeline where the gas suction force of the vacuum pump is working and the atmospheric pressure is low, and from the cleaning liquid conglomerate that fills part of the inside of the pipeline at the rear of the pipeline A sensor that detects when a sufficient amount of cleaning liquid has accumulated to form a slag flow inside the pipeline, Sensor wherein immediately after the pipeline rear in the cleaning liquid has detected that the accumulated required amount, and operating means for ON operation of the air injector in the OFF operating state is provided. In this pipeline cleaning mechanism, a slag flow can be suitably generated to further improve the cleaning effect.

  Moreover, about a milking machine, a milking apparatus provided with the vacuum pump and the at least 1 milking means with which the animal which milks is equipped, a flow is sent, and the said milking apparatus is connected with the suction side of the said vacuum pump. A vacuum level adjustment method for a milking machine having a conduit, wherein the vacuum pump is of a dynamic type, detecting the actual vacuum level in the conduit, and the amount of flow through the conduit, In order to adjust the vacuum level to a target value, a vacuum level adjusting method for a milking machine that adjusts in response to the detected vacuum level has been proposed (see Patent Document 2). In the present invention, the vacuum level in the conduit connecting the vacuum pump and the container (receiver jar) of the milking device is detected, and the vacuum level of the milk transport line 101 (see FIG. 6) is detected. Not what you want.

  Furthermore, for the milking machine, the milk conductivity sensor is provided at one or a plurality of locations in the milk pipe system, the conductivity of the cleaning liquid is measured, the result is compared with a predetermined value of the reference liquid by a computer, and then the purity of the cleaning liquid is determined. A method and apparatus for determining the degree to which a milk pipe system is washed with a cleaning liquid, by measuring the conductivity in a place where the cleaning liquid is difficult to reach and / or sensitive to faults in the milk pipe system, There has been proposed an invention of a method and apparatus for automatically washing a milk tube system that provides an optimum concentration of washing liquid. (See Patent Document 3). The present invention relates to a milking robot and does not include the aforementioned milk transport line 101 (see FIG. 6).

Japanese Patent No. 39442096 (Claims 1 and 2) Japanese Patent No. 3660688 (Claim 1, FIG. 1) JP 09-117731 A (first page, FIG. 1)

The problem to be solved with regard to the washing method of the pipeline miller is that, in the current pipeline miller, the entire milk transport line is made of stainless steel piping, and the washing liquid in the piping in the washing process The situation is that the situation cannot be confirmed by sensors. For this reason, in consideration of the safety factor, the equipment is to be operated for more than the cleaning time in the piping actually required.
In addition, with a conventional pipeline mill, information such as vacuum pressure, detergent concentration, acidity (PH), and washing temperature can be measured only in the processing room, and the actual condition of the actual milk transport line in the barn can be measured in real time. There was no way to confirm.

  Therefore, an object of the present invention is to use a monitoring device that can accurately monitor the situation in the piping of the milk transportation line in the barn that is the site of milking in real time, and to clean the piping in an appropriate and minimum equipment operation time. It is an object of the present invention to provide a method of cleaning a pipeline milker that can perform the above.

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, the milking system is configured with a stainless steel pipe. For a milk transport line that is circulated in a livestock barn where both ends are connected to a receiver jar that temporarily stores the milk, a gate valve provided near one end of the milk transport line is closed, and the milk A receiver jar on one end side of the milk transport line rather than an attachment position of the gate valve so that the cleaning liquid is sent to the receiver jar by flowing the cleaning liquid from one end side to the other end side of the transport line. Pipeline milker that sends the cleaning liquid by operating an open / close valve for opening to the atmosphere connected to a position away from A cleaning method, wherein opening and closing of the open / close valve for opening to the atmosphere is controlled by a value detected by a vacuum pressure sensor disposed in an arbitrary position in a part of the livestock barn of the milk transport line. The piping is cleaned by intermittently sending the cleaning liquid by changing the vacuum pressure in the piping of the milk transport line within an arbitrary setting range.

Moreover, according to one aspect of the method of cleaning a pipeline milker according to the present invention, a transparent monitoring pipe section formed of plastic at an arbitrary position in the milk transport line that is a part of the milk transport line. And the vacuum pressure sensor is disposed in the monitoring pipe section, and the condition of the cleaning liquid can be monitored by visual observation.
Moreover, according to one form of the washing method of the pipeline milker which concerns on this invention, the said vacuum pressure sensor is arrange | positioned in two places, The flow rate of a washing | cleaning liquid can be monitored.

Further, according to one aspect of the method for cleaning a pipeline milker according to the present invention, an acidity sensor or an electrical conductivity sensor is arranged at an arbitrary position in the milk transport line that is a part of the milking line. The presence or absence of a cleaning liquid containing cleaning water and the liquid quality including water quality can be monitored by the acidity sensor or the electrical conductivity sensor.
Moreover, according to one aspect of the method of cleaning a pipeline milker according to the present invention, a temperature sensor is disposed at an arbitrary position in the milk transportation line in the barn, and the temperature sensor It may be characterized by monitoring the temperature of the wash water.

  According to the washing method of the pipeline milker according to the present invention, the situation in the piping of the milk transportation line in the barn can be accurately monitored in real time, so that the cleaning in the piping can be performed in an appropriate and minimum equipment operation time. It has a special advantageous effect of becoming possible.

It is a perspective view which shows the form example of the monitoring apparatus used for the washing method of the pipeline milker which concerns on this invention. It is a perspective view which shows the other example of a monitoring apparatus used for the washing method of the pipeline milker which concerns on this invention. It is sectional drawing which shows the example of a form of the monitoring pipe part. It is sectional drawing which shows the other example of a monitoring pipe part. It is sectional drawing which shows the other example of a monitoring pipe part. It is explanatory drawing which shows the example of a form of a prior art.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a monitoring device used in a pipeline milker cleaning method according to the present invention will be described below in detail with reference to the accompanying drawings (FIGS. 1 to 5).
This monitoring device is composed of stainless steel piping and collects milk milked by a milking unit (see FIG. 6) that is operated by the vacuum pressure of the vacuum pump 13, and in the barn 40 that is the site of milking. And is provided in a pipeline milker including a milk transport line 10 having both ends connected to a receiver jar 17 for temporarily storing the milk. Note that the configuration of the receiver jar 17 and the vacuum pump 13 is installed in the processing chamber 50. Further, 11 is a vacuum supply line, and 60 is a bulk cooler.

In this monitoring apparatus for a pipeline milker, a transparent monitoring pipe section 20 made of plastic is connected to an arbitrary position of the milk transportation line 10 in a barn 40, and the monitoring pipe section 20 At least one kind of monitoring sensor is arranged.
In this way, by installing a plastic transparent pipe (monitoring pipe section 20) in a part of the pipe miller pipe (milk transport line 10) made of stainless steel pipes, The amount of residual milk after the end of milking and the situation in the piping at the time of washing can be confirmed directly visually. Moreover, since the sensor for monitoring is arrange | positioned, the amount of residual milk after the end of milking in the actual barn 40 and the condition in the piping at the time of washing | cleaning can be objectively confirmed as a measured value.

As the monitoring sensor, a vacuum pressure sensor 21, an electrical conductivity sensor 22, an acidity sensor 23, a temperature sensor 24, and the like can be attached to the monitoring pipe unit 20 (see FIGS. 3 to 5). The attachment portions 25 of each sensor are formed thick so as to reinforce the peripheral wall portion, and are attached so that the sensing portion of each sensor faces the inside of the pipe. Reference numeral 26 denotes a screw ring for sealing connection, and screws that mesh with the screw ring 26 are integrally formed at both ends of the pipe constituting the monitoring pipe portion 20. By tightening the screw ring 26, the plastic transparent pipe and the stainless steel pipe constituting the monitoring pipe section 20 are securely sealed and connected by the packing 27.
Since the monitoring pipe part 20 can be connected at an arbitrary position in the circumferential direction of the pipe, the sensor mounting part 25 can be arranged at a position in the circumferential direction optimal for monitoring. For example, when the vacuum pressure sensor 21 is attached to monitor the vacuum pressure, it may be arranged in the vicinity of the topmost part that is not easily affected by milk or cleaning liquid. In addition, when the electrical conductivity sensor 22, the acidity sensor 23, or the temperature sensor 24 is attached to monitor the presence or state of milk or cleaning liquid, it may be disposed near the bottom of the milk or cleaning liquid that can be reliably contacted. .
Furthermore, since the monitoring pipe part 20 is composed of a transparent plastic pipe, it is possible to visually confirm the state of dirt near the sensor mounting part. When the dirt is confirmed, it is possible to remove and clean only the monitoring pipe portion 20 by loosening the screw ring 26, so that it can always be used in a clean state and the error of the monitoring sensor can be reduced.
Note that the electrical conductivity sensor 22 shown in FIG. 4 has a pair of sensing units for electrodes. According to the form of the monitoring pipe unit 20 shown in FIG. 5, the electrical conductivity sensor 22 can be attached instead of the acidity sensor 23 and the temperature sensor 24, and can be shared.

As described above, by attaching various sensors (monitoring sensors such as the vacuum pressure sensor 21, the electrical conductivity sensor 22, the acidity sensor 23, and the temperature sensor 24) to the monitoring pipe unit 20, the piping of the milk transport line 10 in the barn 40. It is possible to collect data relating to information such as vacuum pressure, detergent concentration, acidity (PH), washing temperature, etc.
And since the data can be collected in this way, the following effects can be obtained.
Since the presence or absence of the residual milk can be appropriately confirmed, the residual milk can be appropriately collected with the minimum equipment operation time. Moreover, since the state of cleaning can be appropriately confirmed, it is possible to appropriately perform cleaning with the minimum equipment operation time. By reducing the operation time in this way, work efficiency can be improved and energy consumption can be reduced.
Moreover, since the actual piping internal pressure during milking can be measured, it becomes possible to adjust milking vacuum pressure appropriately based on the measured value. In addition, since the actual situation inside the pipe during cleaning can be measured, the inside of the pipe can be properly cleaned based on the measured value.

Furthermore, since the monitoring pipe section 20 and the monitoring sensor made of a transparent pipe are integrally provided, the situation of the portion where the monitoring sensor is arranged and measured is preferably observed both visually. it can.
In addition, since the monitoring pipe unit 20 and the monitoring sensor are integrated as a unit, the structure is easy to install at a desired position in the milk transport line 10. In addition, the monitoring pipe portion 20 of the present embodiment has a relatively short cylindrical body connected as a part of a straight section, and has a structure that can be easily and suitably installed even after retrofitting.

  In the embodiment shown in FIG. 1, the monitoring pipe portion 20 including a monitoring sensor is provided in a portion farthest from the receiver jar 17 of the milk transport line 10 or in the vicinity thereof. The monitoring pipe unit 20 is provided with a vacuum pressure sensor 21 and an electrical conductivity sensor 22. The part of the milk transport line 10 that is farthest from the receiver jar 17 is generally a part where the degree of vacuum is likely to drop, and the situation inside the pipe is appropriately monitored by observing the situation of the part where the condition is bad. be able to.

In addition, as shown in FIG. 2, monitoring pipe portions 20 including monitoring sensors can be provided at a plurality of locations on the milk transport line 10. Further, in the embodiment shown in FIG. 2, monitoring pipe portions 20 including monitoring sensors are provided at both end portions of the milk transport line 10 in the barn 40.
According to this, various measurement information can be collected more suitably and accurately.
For example, the piping in the milk transport line 10 is cleaned with a lump of cleaning liquid (including cleaning water) called a slag flow, but the size and flow rate of the slag flow can be adjusted without using a dedicated measuring instrument. It can be easily measured and confirmed.

And various automatic control of a milking apparatus can be performed using the measurement information by various sensors.
For example, in response to the vacuum level detected by the vacuum pressure sensor 21 provided in the milk transport line 10, vacuum pressure adjustment control means is provided so as to adjust the vacuum pressure related to the milk transport line 10 to an appropriate level. Good. The vacuum pressure adjustment control means can be constituted by, for example, an automatic adjustment device for the vacuum pressure adjuster 15 provided in a pipe line connecting the vacuum pump 13 and the receiver jar 17, and a control device 35 for controlling the automatic adjustment device. .

Further, the operation control of the residual milk recovery is performed by an automatic opening / closing device of the release valve 31 for opening the atmosphere so as to adjust the vacuum pressure applied to the milk transport line 10 in response to the vacuum level detected by the vacuum pressure sensor 21. It can be performed by the control device 35 that controls this.
Further, the operation control of the cleaning device is performed based on the automatic opening / closing device of the opening / closing valve (see FIG. 6) of each cleaning liquid supply port, the automatic opening / closing device of the opening valve 31 for opening to the atmosphere, and these based on the measured values of various sensors. It can be performed by the control device 35 to control.
The control device 35 can be configured by a computer control system or a sequence control system. Of course, display means for displaying the measurement values of various sensors may be provided, and the operator may manually adjust and control the various devices based on the display data.

Next, based on FIG.1 and FIG.2, the washing | cleaning method of the pipeline milker which concerns on this invention which can be performed using the form example of the monitoring apparatus of the pipeline milker shown above is demonstrated.
This method of washing a pipeline milker is composed of stainless steel piping and is used for collecting milk expressed by a milking unit (see FIG. 6) operated by the vacuum pressure of the vacuum pump 13 and For the milk transport line 10 that is circulated in the barn 40 and is connected at both ends to the receiver jar 17 that temporarily stores the milk, the gate valve 30 provided in the vicinity of one end of the milk transport line 10 is closed, From the attachment position of the gate valve 30 on one end side of the milk transport line 10 so that the cleaning liquid is sent to the receiver jar 17 by flowing the cleaning liquid from one end side 10a of the milk transport line 10 to the other end side 10b. Is operated by operating an open valve 31 for opening to the atmosphere connected to a position away from the receiver jar 17. This is a method for sending the purified liquid, and the opening / closing of the release valve 31 for opening the atmosphere is performed according to the value detected by the vacuum pressure sensor 21 arranged at an arbitrary position in the barn 40 of the milk transport line 10. By controlling the above, the vacuum pressure in the pipe of the milk transport line 10 is changed within an arbitrary setting range, and the cleaning liquid is intermittently sent to clean the pipe.

As an arbitrary setting range of the vacuum pressure, for example, a range of 10 kPa to 60 kPa can be used. According to this, the fluctuation range of the vacuum pressure is appropriate, and the inside of the pipeline can be efficiently cleaned using the pulsating flow.
The cleaning liquid is sucked up through a milking unit (see FIG. 6) that is suspended so as to be immersed in the cleaning liquid in the cleaning liquid tank 18. At this time, the milking unit is connected to the connection port 12 of the milking unit provided on the cleaning liquid tank 18. Further, when the cleaning liquid is sucked up, the open valve 31 for opening to the atmosphere is closed. Further, when the cleaning liquid is circulated, the cleaning liquid is returned from the receiver jar 17 to the cleaning liquid tank 18 through the return pipe 19.

  In addition, a transparent monitoring pipe section 20 made of plastic is connected to an arbitrary position in the livestock barn 40 of the milk transport line 10, and a vacuum pressure sensor 21 is arranged on the monitoring pipe section 20. The condition of the cleaning liquid may be monitored visually. According to this, the state of cleaning can be directly and reliably monitored.

Further, as shown in FIG. 2, the flow rate of the cleaning liquid may be monitored by arranging the vacuum pressure sensors 21 at two locations. The flow rate of the cleaning liquid including the slag flow can be calculated and detected based on the distance and time difference between the two vacuum pressure sensors 21 in the milk transport line 10.
Since the pressure drops when the slag flow mass passes, the size of the slag flow can be detected by measuring the vacuum pressure in the pipe with the vacuum pressure sensor 21. Moreover, since the slag flow becomes large when the time during which the pressure is reduced is long, the magnitude of the slag flow may be detected by measuring the time.

  By controlling the opening / closing valve 31 for opening to the atmosphere based on the size and flow rate of the slag flow thus detected, the slag flow can be controlled to have an appropriate size and flow rate. According to this, it is possible to prevent the slag flow from becoming too large and causing the device to be broken or leaked due to an impact, and it is possible to prevent the slag flow from being small enough to prevent cleaning.

  Further, as shown in FIG. 2, an acidity sensor 23 or an electrical conductivity sensor 22 is arranged in the monitoring pipe unit 20, and the presence or absence of a cleaning liquid containing cleaning water or a liquid containing water quality is detected by the acidity sensor 23 or the electrical conductivity sensor 22. Quality may be monitored. As the liquid quality monitoring, for example, the concentration of milk or the concentration of detergent can be measured. Further, a temperature sensor 24 may be disposed in the monitoring pipe unit 20, and the temperature sensor 24 may monitor the temperature of the cleaning water.

  According to the measured values of these various sensors, it is possible to properly determine the timing of switching of the cleaning liquid as compared with a reference value set and stored in advance, and to control the opening / closing valve (see FIG. 6) of each cleaning liquid supply port. The device 35 can be properly opened and closed. Moreover, according to the measured value of the temperature sensor 24, it is possible to control the heating device and the like so as to appropriately maintain the temperature of the cleaning liquid. According to this, since a washing process can be performed appropriately, washing efficiency can be improved.

Next, a pipeline milker residual milk recovery method that can be performed using the above-described embodiment of the pipeline milker monitoring device will be described based on FIG. 1 as a development of the present invention.
The residual milk collection method of this pipeline milker is composed of stainless steel piping and is used for collecting milk expressed by a milking unit (see FIG. 6) operated by the vacuum pressure of the vacuum pump 13. With respect to the milk transport line 10 that is circulated in the livestock barn 40 at the site and is connected at both ends to the receiver jar 17 for temporarily storing the milk, a gate valve 30 provided near one end of the milk transport line 10 is provided. One end side 10a of the milk transport line 10 is closed so that residual milk after milking is collected in the receiver jar 17 by flowing milk from one end side 10a of the milk transport line 10 to the other end side 10b. The release valve 31 for opening to the atmosphere is connected to a position farther from the receiver jar 17 than the mounting position of the gate valve 30. This is a method for recovering the residual milk by making it, and is opened to the atmosphere by the detection value by the vacuum pressure sensor 21 arranged in an arbitrary position in the livestock barn 40 of the milk transport line 10. By controlling the opening and closing of the release valve 31, the vacuum pressure in the piping of the milk transport line 10 is varied within an arbitrary setting range, and the residual milk is recovered by being intermittently sent in a pulsating flow. To do.

The pressure by the atmosphere taken in by opening the release valve 31 for releasing the atmosphere becomes a pressure that acts to push the remaining milk, and the remaining milk is transferred from one end side 10a of the milk transport line 10 to the other end side 10b. Can be sent to. The detection value by the vacuum pressure sensor 21 can appropriately control the opening / closing of the open valve 31 for opening to the atmosphere, so that the residual milk can be sent efficiently.
Moreover, as an arbitrary setting range of a vacuum pressure, it can be set as the range of 15 kPa to 30 kPa, for example. According to this, the fluctuation range of the vacuum pressure is appropriate, and the residual milk can be recovered efficiently using the pulsating flow so as not to break the milk fat.

  In addition, a transparent monitoring pipe section 20 made of plastic is connected to an arbitrary position in the livestock barn 40 of the milk transport line 10, and a vacuum pressure sensor 21 is arranged on the monitoring pipe section 20. The condition of the remaining milk may be monitored visually. According to this, the situation of residual milk can be directly and reliably monitored.

  Further, an electrical conductivity sensor 22 may be disposed in the monitoring pipe unit 20, and the presence or absence of residual milk may be detected by the electrical conductivity sensor 22. Milk is a conductor, and according to the electrical conductivity sensor 22, the presence or absence can be detected appropriately.

  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 Milk transport line 11 Vacuum supply line 12 Milking unit connection port 13 Vacuum pump 15 Vacuum pressure regulator 17 Receiver jar 18 Cleaning liquid tank 20 Monitoring pipe part 21 Vacuum pressure sensor 22 Electrical conductivity sensor 23 Acidity sensor 24 Temperature sensor 30 Gate valve 31 Open / close valve for opening to the atmosphere 35 Control device 40 Livestock barn 50 Processing chamber 60 Bulk cooler

Claims (5)

In order to collect the milk expressed by the milking unit that is operated by the vacuum pressure of the vacuum pump, it is composed of stainless steel pipes and is circulated in a barn where milking takes place and temporarily stores the milk. For the milk transport line connected at both ends to the receiver jar, close the gate valve provided in the vicinity of one end of the milk transport line and allow the washing liquid to flow from one end side to the other end side of the milk transport line. An open / close valve for opening to the atmosphere, connected to a position farther from the receiver jar than a position where the gate valve is attached on one end side of the milk transport line so that the cleaning liquid is sent to the receiver jar by A pipeline milker cleaning method for sending the cleaning liquid by operating,
By controlling the opening and closing of the open / close valve for opening the atmosphere according to a detection value by a vacuum pressure sensor arranged at an arbitrary position in the livestock barn of the milk transport line, A cleaning method for a pipeline milker, wherein the piping is cleaned by intermittently sending the cleaning liquid while varying the vacuum pressure in the piping within an arbitrary setting range.   A transparent monitoring pipe section made of plastic is connected to an arbitrary position of the milk transportation line that is circulated in the barn, and the vacuum pressure sensor is disposed on the monitoring pipe section. 2. The method of cleaning a pipeline miller according to claim 1, wherein the state of the cleaning liquid is also monitored.   The method of cleaning a pipeline milker according to claim 1 or 2, wherein the vacuum pressure sensors are arranged at two locations, and the flow rate of the cleaning liquid is monitored.   An acidity sensor or an electrical conductivity sensor is disposed at an arbitrary position in the milk barn in the barn, and the presence or absence of cleaning liquid containing cleaning water or the water quality by the acidity sensor or the electrical conductivity sensor. The method for cleaning a pipeline miller according to any one of claims 1 to 3, wherein the liquid quality containing the water is monitored.   The temperature sensor is arranged at an arbitrary position in a part of the milk transport line that is circulated in the barn, and the temperature of the washing water is monitored by the temperature sensor. A method for cleaning a pipeline milker according to claim 1.

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