JP7357395B2 - Disinfection equipment - Google Patents

Description

Patent Law Article 30, Paragraph 2 applies Place of explanation: Obihiro City Hall, 1 Nishi 5-jo Minami 7-chome, Obihiro City Date of explanation: June 4, 2018.

Embodiments described herein relate to hoof disinfection techniques.

In order to prevent hoof disease, techniques for disinfecting hooves with a disinfectant are known (for example, Patent Documents 1 and 2). Patent Document 1 describes disinfecting the hooves of dairy cows by passing them through a tank containing a disinfectant solution and having them take a foot bath. Patent Document 2 describes that while a dairy cow passes through a cleaning passage, a disinfectant is sprayed downward from a spray nozzle on the side wall of the passage to disinfect the hoof.

Special table number 2005-514022 Special table number 2003-534824

In Patent Document 1, when dirt adhering to the feet of a dairy cow is brought into the tank, the effectiveness of the disinfectant is reduced by the dirt. Therefore, in Patent Document 1, it is necessary to replace the disinfectant solution in the tank every time a certain number of dairy cows pass through the tank, and it is not possible to disinfect a large number of dairy cows in succession.

In Patent Document 2, a disinfectant solution is sprayed downward from a spray nozzle on the side wall of the passage onto the hoof of an animal passing through the passage. Therefore, although the disinfectant is applied directly to the hoof wall, it is difficult to apply the disinfectant to the sole and between the toes, where hoof disease is most likely to occur.

The purpose of this specification is to provide a disinfection technique that is capable of continuously disinfecting multiple animals and disinfecting areas of the hoof where hoof disease is likely to occur.

The sterilization device of the embodiment includes a cover that is installed on a floor on which an animal stands and has an opening that is open at least horizontally at a position that is higher than the floor surface and corresponds to the back side of the hoof of the hind foot of the animal; a first nozzle that is covered by a cover and that sprays a disinfectant solution through the opening toward the back side of the hoof of the hind foot of the animal.

In the sterilization device of the embodiment, the cover is located in front of an entrance gate of the milking device, and includes a sensor that detects opening of the exit gate of the milking device, and when the sensor detects that the exit gate opens, and a control unit that sprays disinfectant from the first nozzle. In the disinfection device of the embodiment, the cover is located in front of the outlet of the milking device, and upon receiving a signal indicating the end of milking from the milking device, the disinfectant is sprayed from the first nozzle, and the animal is and a control unit configured to stop spraying the disinfectant from the first nozzle by receiving a signal from the milking device indicating that the milking device has exited the milking device.

The disinfection device of the embodiment includes: an annular path to which the first nozzle is attached via a first valve that opens only when the pressure is equal to or higher than a set pressure; a circulation pump that circulates a disinfectant in the annular path; A spray pump for applying high pressure, and a pressure application path connecting the spray pump to the annular path, and a second valve that only allows flow of disinfectant solution from the spray pump to the annular path. a pressure adding path, and the control unit is configured to circulate the disinfectant in the annular path by using the circulation pump to reduce the pressure in the annular path to the set pressure or less during normal times when the disinfectant is not being sprayed, and to prevent the disinfectant from being sprayed. When spraying, the spray pump makes the pressure in the annular path higher than the set pressure, thereby spraying the disinfectant from the first nozzle.

The sterilization device of the embodiment includes a pipe that stands at a position sandwiching an animal passage area, and has an opening on the floor side that faces the passage area and opens at least horizontally; a second nozzle that sprays a disinfectant solution through the opening toward the back side of the hoof of the animal passing through the opening.

In the sterilization device of the embodiment, the pipe is located in front of an inlet gate of the milking device, and includes a sensor for detecting opening of the exit gate of the milking device, and a sensor for detecting opening of the exit gate of the milking device; and a control unit that sprays disinfectant from the first nozzle.

The disinfection device of the embodiment includes a flooring material having an opening through which an animal passes, and a hoof sole nozzle for spraying a disinfectant onto the sole of the hoof of the animal, the disinfection device being located below the flooring material and located above the opening. and a hoof sole nozzle that sprays a disinfectant solution upwardly onto the floor.

In the sterilization device of the embodiment, there is a sterilization passageway connected to the outlet of the milking device, a concave sterilization side pit provided on the floor of the sterilization passageway for draining water, and a sterilization side pit where the sterilization solution and waste on the floor fall into the sterilization side pit. a pit cover that covers the sterilization-side pit; and a mat placed on the pit cover, the mat being connected to any of the pit openings and forming the opening together with any of the pit openings; and a slit that is connected to the mat opening and allows disinfectant and waste to fall into the disinfection side pit through the pit opening, and the pit cover and the mat have Make up the flooring.

In the disinfection device of the embodiment, the disinfection side pit is connected to a milking side pit provided under the floor of the milking device and is shallower than the milking side pit, and the disinfectant in the disinfection side pit is connected to the milking side pit provided under the floor of the milking device. Flows into the side pit. In the disinfection device of the embodiment, the hoof sole nozzle is provided on each of the left and right hind paws of the animal, and the hoof sole nozzle is provided on each of the left and right hind hooves to disinfect the left and right hind paws of the animal. The nozzle has a spray port located above the floor and on the outside of the hoof sole nozzle in a direction intersecting the direction of movement of the animal in the disinfection device, and the nozzle is configured to spray the disinfectant in a direction that intersects the direction of movement of the animal in the disinfection device. Spray forward and upward.

The disinfection device of the embodiment includes a tank that is located on the floor where the animal passes and contains a disinfectant solution, and a hoof sole that is provided in the tank so as to be immersable downward from a reference position, and that is given a restoring force to the reference position. The nozzle includes a hoof sole nozzle that sprays the disinfectant onto the floor when stepped on by the animal and submerged downward.

In the disinfection device of the embodiment, the disinfectant is salt-free hypochlorous acid water, and the animal is an artiodactyl, such as a cow.
The sterilization device of the embodiment includes: a concave sterilization pit formed on the floor and through which a falling sterilizing solution is drained to the outside; and a tank provided within the sterilization pit, accommodating the sterilizing solution, and on which an animal rides; A tank in which a gap is formed between the upper opening of the sterilization pit and the sterilization pit to allow the sterilization solution to fall into the sterilization pit in plan view, and a plurality of nozzles provided on the upper surface of the tank so as to be immersable downward from a reference position. a plurality of hooves which are given a restoring force to the reference position and which, when stepped on by the animal riding in the tank and immerse downward, squirt the disinfectant in the tank upward to disinfect the animal's hooves; and a nozzle for the sole of the hoof.
The disinfection device of the embodiment includes a concave disinfection pit that is formed on the floor and drains the falling disinfectant to the outside, and a concave disinfection pit that is provided in the disinfection pit and covers an upper opening of the disinfection pit so that the disinfectant is discharged into the disinfection pit. A sterilization pit cover is provided in the sterilization pit, and the sterilization solution is sprayed upward through the pit openings to the top of the sterilization pit cover, and the sterilization pit cover is provided with a plurality of pit openings through which animals are dropped into the pit, and the animal rides on the sterilization pit cover. and a plurality of hoof sole nozzles for disinfecting the hoof of the animal riding on the disinfection pit cover.

It is a top view showing a sterilization device and a milking device of a 1st embodiment. It is a sectional view of a disinfection device. FIG. 3 is a diagram showing an example of the configuration of a route for disinfectant. It is a figure showing the disinfection device of a 2nd embodiment. It is a figure showing the sterilization device of a 3rd embodiment. FIG. 3 is a diagram showing an example of the configuration of a route for disinfectant. It is a figure which shows the structure of the floor of the milking apparatus and the disinfection apparatus of 4th Embodiment. It is a perspective view of a pit cover and a mat. FIG. 3 is a cross-sectional view showing how the mat bends. FIG. 7 is a cross-sectional view showing another example of the mat opening. It is a top view which shows the position of the nozzle for hoof soles. FIG. 3 is a side view showing the position and orientation of a nozzle. FIG. 6 is a diagram illustrating an example of a configuration around a disinfection-side pit in a path for supplying disinfectant to a nozzle on a hind leg. It is a figure which shows the structure of the floor of the milking apparatus in which the sterilization apparatus of 4th Embodiment was incorporated. FIG. 2 is a schematic diagram showing the configuration of a hoof wall nozzle and an auxiliary hoof nozzle. It is a sectional view of the sterilization device of a 5th embodiment. FIG. 3 is a plan view showing a gap leading to a sterilization side pit. FIG. 2 is a schematic diagram for explaining the operating principle of a hoof sole nozzle.

Each embodiment will be described below with reference to the drawings.
(First embodiment)
FIG. 1 is a plan view showing the sterilization device 1 and the milking device 9.
The disinfection device 1 is located in front of the entrance gate 93 of the milking device 9 in the cowshed. The disinfection device 1 will be described later.

The milking device 9 uses concentrated feed as bait, allows the dairy cow to voluntarily enter the device 9, and automatically milks the cow. The milking device 9 includes a milking passage 90 formed by opposing frames 91 and 92. The frame 91 includes a plurality of poles, each of which extends horizontally and is vertically spaced apart. The frame 92 includes a column on the entrance gate 93 side, a column on the exit gate 98 side, and a plate-shaped wall section provided between the columns so that the lower end is located around the height of the dairy cow's body. , is provided. The milking device 9 moves the feeding tank 94 and the robot arm 95 into and out of the milking passageway 90 through between the wall and the floor. A roof portion that covers the upper part of the milking passage 90 is attached to the frame 92.

The milking passage 90 has a length and width that can accommodate one dairy cow. The milking device 9 detects the presence or absence of a dairy cow in the area in front of the entrance gate 93 using a sensor that detects changes in infrared rays in the area in front of the entrance gate 93. The milking device 9 uses a reader to read identification information of a dairy cow from a wireless tag attached to the cow. The milking device 9 opens the entrance gate 93 when accepting a dairy cow into the device 9. The entrance and exit gates 93 and 98 each include a plurality of poles that extend horizontally and are vertically spaced apart from each other. At the entrance and exit gates 93 and 98, the lower end poles are at about the height of the dairy cow's body.

The milking device 9 brings out a feed tank 94 forward in the direction of movement of the dairy cow in the milking passage 90, and feeds concentrated feed into the feed tank 94. The dairy cow advances to the front of the milking aisle 90 and eats concentrated feed. The milking device 9 closes the entrance gate 93 when a camera installed on the roof detects that the cow has completely entered the milking passage 90.

The milking device 9 takes a movable robot arm 95 into the milking passage 90, detects the position of the teat with a sensor, cleans the teat, and then attaches a teat cup to the teat. The milking device 9 expresses milk, sends the milk to a tank, and uses sensors to detect components, temperature, etc. of the milk. A concave pit is provided on the floor of the milking passage 90, and a weight scale 96 is provided to close the pit. A dairy cow is on a scale 96 while eating concentrate. The milking device 9 measures the weight of the dairy cow using a weighing scale 96. The information regarding the milk and the weight of the dairy cow are acquired by the control device 97 (control unit) of the milking device 9. The control device 97 includes a processor, a memory, a display, and an input section, like the control device 2 described later.

The weight scale 96 is provided with a drain port 961 for dropping dirt and teat cleaning agent into the pit. A plurality of bars are provided at the drain port 961 with gaps therebetween to prevent the hoof from falling. Dirt and the like that fall into the pit are discharged out of the pit through an outlet provided in the pit. The user operates the control device 97 and can confirm information regarding milk and the weight of the dairy cow on the display of the control device 97. The control device 97 performs various controls of the milking device 9, such as opening and closing of the entrance and exit gates 93 and 98. The user can operate the milking device 9 and make various settings on the settings screen displayed on the display.

After milking, the milking device 9 moves the robot arm 95 and feed tank 94 out of the milking passage 90, and then opens the exit gate 98. The cow exits the milking device 9 through an exit gate 98. The milking device 9 closes the exit gate 98 when the camera on the roof detects that the dairy cow has exited the milking passage 90.

The disinfection device 1 sprays a disinfectant solution onto the hind hooves of the dairy cow in the milking device 9. The disinfection device 1 includes a cover 11, an interdigital nozzle 12, a sensor 13, and a control device 2.

The cover 11 is placed on the floor on which the animals stand, and the cows pass above it. The cover 11 is made of stainless steel, for example. The cover 11 extends in an orthogonal direction (vertical direction in FIG. 1) perpendicular to the direction of movement of the dairy cow (vertical direction in FIG. 1). The cover 11 has openings 111 at positions corresponding to the back sides of the left and right hind hooves of the dairy cow. The opening 111 faces in the direction of movement of the dairy cow within the milking passageway 90. In the space under the cover 11, there is an inter-toe nozzle 12 (first nozzle) at a location corresponding to the opening 111. The interdigital nozzle 12 sprays disinfectant through the opening 111. The inter-toe nozzle 12 spreads the disinfectant in a conical shape and sprays it. Spraying of the disinfectant by the inter-toe nozzle 12 is performed under the control of the control device 2 . The sensor 13 detects the opening/closing of the exit gate 98 and outputs a signal indicating the opening/closing of the exit gate 98 to the control device 2 . As the sensor 13, for example, a sensor can be used that opens and closes the contacts of a reed switch in which a magnet attached to the exit gate 98 is located at an appropriate position as the exit gate 98 opens and closes.

The control device 2 includes a processor 21, a memory 22, a display 23, and an input section 24. The processor 21 executes various processes of the disinfection device 1, such as spraying a disinfectant, by reading programs in the memory 22. The display 23 displays information acquired by the disinfection device 1, a setting screen for the disinfection device 1, and the like. The input unit 24 accepts user input, and is a key or a touch panel.

FIG. 2 is a cross-sectional view of the disinfection device 1.
The cover 11 includes a main body portion 112 that bulges upward and is curved, and flat plate portions 113 connected to both ends of the main body portion 112 in the direction of movement of the dairy cow (left-right direction in FIG. 2). The cover 11 is fixed to the floor with bolts or the like using the flat plate portion 113. The floor may be made of concrete, and the cover 11 may have a portion having the opening 111 exposed upward, and other portions embedded in concrete. The opening 111 is located at a position higher than the floor surface and is open at least in the horizontal direction. A pipe 14 through which a disinfectant solution flows is passed through a space below the main body part 112. An inter-toe nozzle 12 is attached to the pipe 14. The inter-toe nozzle 12 is covered by the cover 11 and installed so that the tip and the like do not come out from the opening 111. A hot wire 141 is inserted into the pipe 14 to keep the pipe 14 warm. The heating wire 141 may be turned on manually, or may be turned on automatically by a thermostat when the environmental temperature decreases.

When the milking device 9 opens the exit gate 98 after milking, the control device 2 uses the sensor 13 to detect that the exit gate 98 is opened, and sprays disinfectant using the inter-toe nozzle 12. The inter-toe nozzle 12 sprays the disinfectant through the opening 111 in a conical shape so as to include a component parallel to the floor. The position and angle of the inter-toe nozzle 12 and the spread of the sprayed disinfectant (mist density) are such that the disinfectant passes between the floor and the entrance gate 93 and enters the milking device 9 in a waiting state as shown in FIG. The spray is set to be sprayed from the back of the cow's hind hoof to the area including the accessory hoof.

The hoof of a dairy cow is divided into an inner hoof located on the inside in the width direction of the dairy cow (upper side in the enlarged view in FIG. 2) and an outer hoof located on the outer side in the width direction (lower side in the enlarged view in FIG. 2). An interdigital space is formed between the inner and outer hoof. A portion of the disinfectant sprayed from the inter-toe nozzle 12 passes between the toes, passes from the back of the hoof to the front, and directly hits the inter-toes and the sole of the hoof to disinfect these areas. When the milking device 9 closes the exit gate 98, the control device 2 uses the sensor 13 to detect that the exit gate 98 is closed, and ends the spraying of the disinfectant.

FIG. 3 is a diagram showing an example of the configuration of a route for disinfectant.
The pipe 14 to which the inter-toe nozzle 12 is attached constitutes an annular path 143 passing through the circulation pump 153. The circulation pump 153 pumps out the disinfectant from the tank 151 and circulates the disinfectant within the annular path 143 . Salt-free hypochlorous acid water shall be used as the disinfectant, but any appropriate disinfectant may be used. The temperature of the disinfectant in the tank 151 is maintained at 36° C. to 40° C. by a heater 152. The inter-toe nozzle 12 is connected to the annular path 143 (piping 14) via a check valve 121 that opens when a pressure equal to or higher than the set pressure is applied. The check valve 121 may be incorporated into the interdigital nozzle 12. Normally, the control device 2 causes the circulation pump 153 to circulate the disinfectant in the annular path 143 at a low pressure that is lower than the set pressure of the check valve 121 .

A pressure application path 144 connecting a spray pump 154 to the annular path 143 is connected between the interdigital nozzle 12 and the circulation pump 153 in the annular path 143 . The spray pump 154 is for applying high pressure to the annular path 143 and sends the disinfectant solution from the tank 151 to the circulation path through the check valve 155 at high pressure. Check valve 155 allows only one-way flow of disinfectant solution from spray pump 154 to annular path 143 . When spraying the disinfectant, the control device 2 uses the spray pump 154 to send the disinfectant at high pressure, and sets the pressure in the annular path 143 to a high pressure higher than the set pressure of the check valve 121. As a result, the check valves 121 of the inter-digital nozzles 12 open simultaneously, and the inter-digital nozzles 12 simultaneously spray the disinfectant. In this way, by controlling the outputs of the pumps 153 and 154, the control device 2 can open the inter-toe nozzle 12 and spray the disinfectant only when disinfecting.

(Effects of the first embodiment)
Since the disinfection device 1 disinfects the hoof by spraying the disinfectant, there is no need to replace the disinfectant in the tank, which is required when disinfecting the hoof in a foot bath. Therefore, the disinfection device 1 can disinfect multiple dairy cows in succession. The disinfection device 1 sprays a disinfectant solution along the floor toward the back side of the hooves of the dairy cow's hind legs. Some of the disinfectant solution escapes from the back between the toes to the front. Thereby, the disinfection device 1 can disinfect the hoof wall, sole, and between the toes of the dairy cow's hind feet. 90% of hoof diseases occur in the hind feet of dairy cows, so the disinfection device 1 is designed to disinfect only the hooves of the hind feet of dairy cows, so it has a simple configuration that is sufficient to prevent hoof disease in dairy cows. It can be effective.

The cover 11 and interdigital nozzle 12 of the disinfection device 1 are located in front of the entrance gate 93 of the milking device 9. Therefore, the disinfectant can be sprayed onto the cow's hind legs whose position is defined by the milking device 9. Therefore, the disinfection device 1 can reliably spray the disinfectant onto the hind legs and hooves of the dairy cow.

Disinfecting a dairy cow during milking may make the cow feel uncomfortable and reduce milk yield. Since the disinfection device 1 sprays the disinfectant after detecting that the exit gate 98 is opened, disinfection can be performed after milking, and the milking amount does not decrease. Since the disinfection device 1 sprays the disinfectant after detecting that the exit gate 98 is opened, it can prompt the dairy cow to exit the milking device 9, leading to an improvement in the operating rate of the milking device 9.

Dairy farming is often carried out in cold regions, so preventing the nozzles that spray disinfectants and disinfectants from freezing becomes an issue. In the disinfection device 1, the tip of the inter-toe nozzle 12 does not come out from the opening 111, and the entirety is covered with the cover 11. Therefore, the inter-digital nozzle 12 can be kept warm by the cover 11, and freezing of the inter-digital nozzle 12 can be suppressed. In the disinfection device 1, normally, the disinfectant solution in the pipe 14 is circulated at low pressure by the circulation pump 153, and when the disinfectant solution is sprayed, the spray pump 154 disinfects the front stage of the pipe 14 to which the inter-toe nozzle 12 is attached at high pressure. Send out the liquid. Therefore, the disinfectant can be sprayed from the inter-toe nozzles 12 at the same time, and freezing of the disinfectant can be suppressed under normal conditions. Furthermore, since a heating wire 141 is additionally installed inside the cover 11, it is also possible to prevent the disinfectant inside the pipe 14 from freezing. This makes it possible to prevent the disinfectant in the pipe 14 from freezing even if the environmental temperature is -30°C.

Since the disinfection device 1 uses salt-free hypochlorous acid water as a disinfectant, the load on the environment can be suppressed compared to when a disinfectant containing formaldehyde or copper sulfate is used. Salt-free hypochlorous acid water has no odor, so it doesn't feel strange to dairy cows.

(Modified example of the first embodiment)
The spray range of the disinfectant may be expanded by rotating the inter-toe nozzle 12 horizontally to the left and right with respect to the dairy cow using an appropriate drive mechanism.

The control device 2 of the disinfection device 1 may start spraying the disinfectant by receiving a signal indicating the end of milking or a signal indicating opening the exit gate 98 from the control device 97 of the milking device 9. The control device 2 of the disinfection device 1 may end spraying of the disinfectant by receiving a signal to close the exit gate 98 from the control device 97 of the milking device 9. The milking device 9 has a configuration in which the exit gate 98 is eliminated and the milking tank 94 is brought out into the milking passage 90 to disallow the dairy cows from leaving the room, and the milking tank 94 is moved outside the milking passage 90 to allow the dairy cows to leave the room. There are some things. The control device 2 of the disinfection device 1 may stop spraying the disinfectant by receiving a signal from the control device 97 of the milking device 9 indicating that the dairy cow has left the milking passage 90.

When the disinfection device 1 (cover 11 and inter-toe nozzle 12) is installed on a dairy cow that remains at the set position, it can effectively spray the disinfectant onto the hooves of the hind feet from behind. Therefore, the disinfection device 1 can be installed, for example, in front of the entrance to an individual parlor in a rotary parlor or a parallel parlor, or in front of the entrance to each individual fence in a feed station. The disinfection device 1 may be installed in a passageway through which dairy cows pass in one direction, as long as it can spray disinfectant from behind the cow toward the hooves of the cow's hind legs.

The animal to be sprayed with the disinfectant by the disinfection device 1 may not be a dairy cow, but may be an animal with hooves, such as a horse, a pig, a goat, or a sheep. From the perspective of disinfection between the toes, the disinfection device 1 can be more effective if the animal to which the disinfectant is sprayed by the disinfection device 1 is an artiodactyl, such as a cow.

(Second embodiment)
In the following description of each embodiment, the description of the same configuration as the above-described embodiment will be omitted or will be briefly described.
FIG. 4 is a diagram showing the disinfection device 1E.
The disinfection device 1E is located in front of the outlet of the milking passage 90 of the milking device 9. The disinfection device 1E sprays disinfectant from the inter-toe nozzle 12 by receiving a signal indicating the end of milking from the milking device 9. When the dairy cow leaves the milking device 9 and walks over the cover 11 of the disinfection device 1E, a disinfectant solution is applied from the disinfection device 1E to the back of each hind hoof. Some of the disinfectant liquid flows from the back between the toes to the front, disinfecting the area between the toes. When the disinfection device 1E receives a signal from the milking device 9 indicating that the cow has left the milking device 9, the disinfection device 1E stops spraying the disinfectant from the inter-toe nozzle 12.

(Effects of the second embodiment)
Similar to the first embodiment, the disinfection device 1E can disinfect the area between the toes of the hind hooves of a dairy cow.

(Third embodiment)
FIG. 5 is a diagram showing the disinfection device 1A.
The disinfection device 1A includes two pipes 11A. The two pipes 11A are positioned to sandwich the passage area PA for dairy cows heading toward the entrance gate 93 of the milking device 9. The pipe 11A has an opening 111A on the floor side. The opening 111A faces the passage area PA and the milking device 9 and is open at least in the horizontal direction. A pipe 14A passes through the pipe 11A. In the pipe 14A, an inter-toe nozzle 12A (second nozzle) is connected to a position corresponding to the opening 111A. The inter-toe nozzle 12A is covered by the pipe 11A and installed so that the tip and the like do not come out from the opening 111A. A hot wire (not shown) is installed inside the pipe 14A.

The inter-toe nozzle 12A sprays the disinfectant in a conical shape through the opening 111A so as to include a component parallel to the floor. The position and angle of the inter-toe nozzle 12A, the way the sprayed disinfectant is spread, etc. are the same as in the first embodiment, and the disinfectant is sprayed from the back of the cow's hind hoof in the milking device 9 to the area including the accessory hoof. is set to be sprayed. The sterilization device 1A disinfects the hind legs of the cow in the milking device 9 by detecting that the exit gate 98 of the milking device 9 is opened by the sensor 13 or by receiving a signal indicating the end of milking from the milking device 9. Disinfectant is sprayed toward the hoof from the inter-toe nozzle 12A. The disinfection device 1A finishes spraying the disinfectant by detecting that the exit gate 98 of the milking device 9 is closed or by receiving a signal from the milking device 9 indicating the exit of the dairy cow.

FIG. 6 is a diagram illustrating an example of the configuration of a disinfectant solution path.
In the disinfection device 1A, there is no circulation pump 153, and disinfectant is sent from the tank 151 to the piping 14A by a spray pump 154. The spray pump 154 is equipped with an electromagnetic valve that switches between opening and non-releasing the pressure to the pipe 14A, and can quickly increase the pressure to the pipe 14A when receiving an instruction to spray the disinfectant from the control device 2A. I can do it. In the disinfection device 1A, high pressure is applied to the piping 14A from normal times. When spraying the disinfectant, the disinfection device 1A can instantaneously apply pressure inside the pipe 14A by driving the spray pump 154, thereby instantly opening the check valve 121 of each inter-toe nozzle 12A. The disinfectant solution is simultaneously sprayed from each inter-toe nozzle 12A.

(Effects of the third embodiment)
The disinfection device 1A sprays a disinfectant solution onto the hind hooves of the dairy cow in the milking device 9 from the diagonal rear side using the inter-toe nozzle 12A. Some of the disinfectant solution escapes from the back between the toes to the front. Thereby, the disinfection device 1A can disinfect the hoof wall, sole, and between the toes of the dairy cow's hind feet.

In the disinfection device 1A, since the inter-digital nozzle 12A is covered with the pipe 11A and kept warm, it is possible to prevent the inter-digital nozzle 12A from freezing. In the disinfection device 1A, since the inside of the pipe 14A is heated with a hot wire, it is possible to prevent the disinfectant liquid inside the pipe 14A from freezing.

(Modified example)
The disinfection device 1A may be configured to spray a disinfectant solution from an obliquely rear side onto the hooves of the hind legs of a dairy cow entering the milking device 9 using an inter-toe nozzle 12A.

(Fourth embodiment)
FIG. 7 is a diagram showing the structure of the floor of the milking device 9 and the disinfection device 1B, with FIG. 7(A) being a plan view and FIG. 7(B) being a sectional view.
The disinfection device 1B is provided at the outlet of the milking device 9. The disinfection device 1B will be described later.
A concave milking side pit 81 is formed on the floor of the milking device 9 and extends along the direction of movement of the dairy cow. The milking side pit 81 is for draining dirt, detergent used for cleaning the teats, etc. to the outside via the drain port 811. The milking side pit 81 is closed by a pit cover 82. The pit cover 82 is supported by a bracket 812 fixed to the milking side pit 81, for example. A plurality of mats 83 are laid on the pit cover 82.

FIG. 8 is a perspective view of the pit cover 82 and mat 83.
The pit cover 82 is made of, for example, FRP (Fiber Reinforced Plastics) and has a lattice shape. The pit cover 82 has a plurality of rectangular pit openings 821 for allowing dirt and the like on the floor to fall into the milking side pit 81. The size of the pit opening 821 is smaller than the sole of a dairy cow's hoof. The pit cover 82 may be made of any suitable material, and the number and position of the pit openings 821 may be arbitrary as long as it can support the dairy cow and allow dirt, etc. on the floor to fall into the milking side pit 81. The pit cover 82 may have a thickness of 50 mm, for example.

The mat 83 is, for example, a rectangular sheet made of rubber, and is fixed onto the pit cover 82 by appropriate means such as adhesive or screws. The mat 83 is supported by the edge portion of the pit cover 82 around the pit opening 821. The mat 83 may have a thickness of 20 mm, for example. The mat 83 has a mat opening 831 and a slit 832 formed therein. The mat opening 831 is formed in the center of the mat 83 and has a circular shape. The mat opening 831 is connected to the pit opening 821 in the vertical direction. The slits 832 are connected to the mat opening 831, and a plurality of slits 832 are formed radially around the mat opening 831.

FIG. 9 is a cross-sectional view showing how the mat 83 is bent. FIG. 9(A) shows the mat 83 before bending, and FIG. 9(B) shows the bent state.
When the dairy cow walks on the mat 83, a downward load is applied to the mat 83 from the dairy cow. At this time, the slit 832 opens, making it easier for the mat 83 to bend downward. Therefore, dirt, disinfectant, filth, etc. on the mat 83 easily fall into the pit opening 821 through the mat opening 831 and the slit 832. Note that the mat opening 831 does not have to be vertical, and may be tapered so as to expand downward, as shown in FIG. The length of each slit 832 can be set as appropriate. For example, the lengths of the slits 832 in two directions shifted by 45 degrees from the two directions may be shorter than the lengths of the slits 832 in two directions that intersect perpendicularly (up, down, left and right directions in FIG. 8).

Returning to FIG. 7, the disinfection device 1B includes a disinfection passage 10 formed by opposing frames 171 and 172. The disinfection passage 10 is connected to the milking passage 90 and allows the cow to proceed in one direction. The disinfection passage 10 has a length and width that can accommodate one dairy cow. In the disinfection passageway 10, there is an exit gate 173 at the leading end in the direction of movement of the dairy cow. The disinfection device 1B includes a sensor 174 that can detect entry and exit of dairy cows into the disinfection passageway 10. The sensor 174 may be a sensor that uses infrared light, such as a human sensor, or may be an imaging device that monitors the inside of the disinfection passageway 10.

As shown in FIG. 7, the disinfection device 1 includes a disinfection side pit 84, a pit cover 82A, and a plurality of mats 83. The disinfection side pit 84 is for draining disinfectant and waste, and is provided on the floor of the disinfection passageway 10. The disinfection side pit 84 has a concave shape and extends in the direction of movement of the dairy cow. The disinfection side pit 84 is shallower than the milking side pit 81 and is connected to the milking side pit 81 via a communication port 85. The disinfectant solution and dirt in the disinfection side pit 84 flow into the milking side pit 81 via the communication port 85.

Like the pit cover 82, the pit cover 82A is made of FRP and has a lattice shape, and has a plurality of pit openings 821. The pit cover 82A is provided to close the opening of the sterilization side pit 84. The pit cover 82A is supported by a bracket 841 fixed to the disinfection side pit 84, for example. The material of the pit cover 82A, the number of pit openings 821, and the positions thereof may be arbitrary as long as the pit cover 82A can support the dairy cow and allow dirt and the like on the floor to fall into the disinfection side pit 84.

A mat 83, which is the same as the mat 83 used in the milking device 9, is installed and fixed at each pit opening 821 on the pit cover 82A. The mat 83 has a mat opening 831 and a slit 832 formed therein. The pit cover 82A and the mat 83 constitute the flooring of the disinfection passageway 10 through which animals pass. The pit opening 821 and the mat opening 831 are connected vertically.

A pipe 14 through which a disinfectant solution flows is passed through the disinfection side pit 84. A hoof sole nozzle 31 is connected to the pipe 14. The hoof sole nozzle 31 sprays disinfectant onto the floor through the pit opening 821 and the mat opening 831. The spray opening of the hoof sole nozzle 31 may be located in the pit opening 821. The hoof sole nozzle 31 can spray disinfectant directly onto the hoof sole when the cow's hoof sole is present in the corresponding mat opening 831.

FIG. 11 is a plan view showing the position of the hoof sole nozzle 31.
The dairy cow coming out of the milking device 9 waits at the beginning of the disinfection passage 10 until the exit gate 173 is opened. A plurality of hoof sole nozzles 31 are provided in a region where the left and right hind hooves of the dairy cow in the standby position are expected to touch the ground. In this embodiment, the hoof sole nozzles 31 are arranged in five rows in the direction of movement of the dairy cow, and in three rows in the orthogonal direction orthogonal to the direction of movement, for each hind foot of the dairy cow. That is, 15 hoof sole nozzles 31 are installed for each hind foot of a dairy cow.

The disinfection device 1B includes a hoof sole nozzle 31, a hoof wall nozzle 32, and an accessory hoof nozzle 33 as hoof disinfection nozzles. There is one hoof wall nozzle 32 for each foot of the dairy cow, and the hoof wall nozzle 32 is located at a position offset from the hoof sole nozzle 31 and the disinfection side pit 84 on both sides in the orthogonal direction (upper and lower sides in FIG. 11), and in a standby position. The position is forward in the direction of movement relative to the hoof of each foot of the cow. There is one accessory hoof nozzle 33 for each foot of the dairy cow, and it is located at a position offset from the hoof sole nozzle 31 and the disinfection side pit 84 on both sides in the orthogonal direction (upper and lower sides in FIG. 11), and in a standby position. The position is behind the hoof of each foot of the cow in the direction of travel. Each nozzle 32, 33 is connected to piping 14 and supplied with disinfectant.

FIG. 12 is a side view showing the positions and orientations of the nozzles 31 to 33.
The hoof wall nozzle 32 is installed so that the spray port is at a higher position than the hoof wall of the dairy cow and sprays the disinfectant diagonally downward toward the rear in the direction of movement of the dairy cow. The secondary hoof nozzle 33 is installed so that the spray port is located above the floor and lower than the secondary hoof, and sprays the disinfectant diagonally upward in the forward direction of the dairy cow's movement.

FIG. 13 is a diagram showing an example of the configuration around the disinfection side pit 84 in the path for supplying disinfectant to the nozzles 31 to 33 of the hind legs.
The disinfectant solution is supplied to the nozzles 31 to 33 using the circulation pump 153 and the spray pump 154, as in the first embodiment. For example, the nozzles 31 to 33 of the hind legs are connected to the pipe 14. The disinfectant solution in the piping 14 supplied from the tank 15 is normally circulated at low pressure by the circulation pump 153, and at the time of spraying, it is brought to high pressure by the spray pump 154, so that the disinfectant solution is supplied to the check valves attached to the nozzles 31 to 33. opens, and disinfectant is sprayed from each nozzle 31 to 33 at the same time. The piping 14 is provided in a meandering manner within the disinfection side pit 84, and rows of hoof sole nozzles 31 are connected to each of the straight parts that are turned back. The hoof wall nozzle 32 is provided in an upwardly U-shaped portion of the pipe 14 located on the floor surface, and is provided above the floor surface. The secondary hoof nozzle 33 is provided at a portion of the pipe 14 that is placed on the floor surface, and is provided above the floor surface. The supply path for the disinfectant to the nozzles 32 and 33 of the front legs can also be realized with a similar configuration.

The dairy cow exits the milking device 9, enters the disinfection device 1B, advances to the exit gate 173, and waits. When the disinfection device 1B (control device 2B thereof) detects entry of a dairy cow into the disinfection passage 10 by the sensor 174, it sprays disinfectant from each nozzle 31 to 33. When the dairy cow waits at the standby position, the cow's hind legs are located in the set area. As a result, the disinfectant solution is sprayed from each of the nozzles 31 to 33 onto the sole of the hoof, the hoof wall, and the accessory hoof of the dairy cow's hind foot. After the set time has elapsed, the disinfection device 1B finishes spraying the disinfectant and opens the exit gate 173. When the sensor 174 detects that the dairy cow has left the disinfection passageway 10, the disinfection device 1B closes the exit gate 173. The timing for starting and ending spraying of the disinfectant can be set as appropriate. For example, when the sensor detects that the exit gate 98 of the milking device 9 is opened, the disinfection device 1B starts spraying the disinfectant, and when the sensor detects that the exit gate 98 of the milking device 9 is closed, the disinfection device 1B starts spraying the disinfectant. may be terminated.

(Effects of the fourth embodiment)
The secondary hoof of a dairy cow does not come into contact with the floor if the floor is relatively hard, such as in a cowshed, but if the floor is soft, such as the ground, the secondary hoof comes into contact with the floor along with the sole of the hoof, and becomes dirty. The hoof wall faces forward and sideways in the direction of movement of the dairy cow, and faces upward, while the accessory hoof faces backward and downward in the direction of movement of the dairy cow. Therefore, with conventional disinfection devices that spray a disinfectant solution downward from a spray nozzle on the side wall of the passage, spraying of the disinfectant solution to the accessory hoof is insufficient.

Since the disinfection device 1B uses the secondary hoof nozzle 33 to spray the disinfectant upward and forward in the direction of movement of the dairy cow, the disinfectant can be sprayed from the front onto the secondary hoof. Furthermore, since the disinfection device 1B can spray disinfectant onto the hoof wall using the hoof wall nozzle 32, the entire hoof can be disinfected.

The disinfection device 1B can spray disinfectant directly onto the sole of the dairy cow's hoof from the hoof sole nozzle 31 located below the pit cover 82A and the mat 83 through the pit opening 821 and the mat opening 831, thereby effectively disinfecting the hoof. can.

Since the mat 83 of the disinfection device 1B is the same as the mat 83 of the milking device 9, dairy cows are unlikely to feel uncomfortable on the floor of the disinfection device 1B.

(Modified example of the fourth embodiment)
There may be one row of hoof nozzles 31 for each hind foot of the cow, or there may be only one row of hoof nozzles 31 for each hind foot of the cow. The pit cover 82A only needs to have an opening through which the disinfectant sprayed by the hoof sole nozzle 31 can pass onto the mat 83, and the size and shape of the opening can be set as appropriate. The configuration of the piping 14 connected to the nozzles 31 to 33 can be set as appropriate. The disinfection passage 10 does not have to be linear, and the layout is free, and the disinfection passage 10 may be bent in the middle. A hoof sole nozzle 31 may be installed on the front foot of the dairy cow. The height position of the spray port of the hoof sole nozzle 31 may be below the pit cover 82A, within the mat opening 831, or on the floor surface.

Since the disinfection device 1B uses the sensor 174 to determine whether or not the dairy cow is at the set position, the disinfection device 1B can start the spraying process even if it is not connected to the exit gate 98 of the milking device 9. Therefore, the disinfection device 1B does not need to be connected to the milking passage 90 of the milking device 9, and can be installed at a position desired by the user.

(Fifth embodiment)
FIG. 14 is a diagram showing the structure of the floor of the milking device 9 in which the sterilization device 1C is incorporated, with FIG. 14(A) being a plan view and FIG. 14(B) being a sectional view.
The disinfection device 1C is incorporated into the milking device 9. A pit 81 is provided on the floor of the milking device 9, and a pit cover 82 is provided to close the pit 81. A mat 83 is installed on the pit cover 82. The pit opening 821 and the mat opening 831 are connected vertically. In the pit 81, a hoof nozzle 31 is provided in each area where the left and right hind legs of the dairy cow are located during milking. The hoof sole nozzle 31 is connected to a pipe 14 through which disinfectant is circulated. The hoof sole nozzle 31 sprays disinfectant solution upwardly onto the floor through the pit opening 821 and the mat opening 831.

FIG. 15 is a schematic diagram showing the configuration of the hoof wall nozzle 32 and the secondary hoof nozzle 33.
The disinfection device 1C connects the sensor 191, the hoof wall nozzle 32, and the secondary hoof nozzle 33 into and out of the milking passageway 90 through the gap between the frame 92 of the milking device 9 (FIG. 14) and the floor, and the robot arms 192 to 194, respectively. It can be moved by The technique of moving a sensor or a certain element in and out of the milking passage 90 in and out of the milking passage 90 three-dimensionally through the gap between the frame 92 of the milking device 9 and the floor is to move the above-mentioned milking sensor and teat cup in and out of the milking passage 90. The technology of the existing robot arm 95 that moves in three dimensions can be applied.

The robot arm 193 can move the hoof wall nozzle 32 with the hoof wall nozzle 32 facing backward and downward in the direction of movement of the dairy cow. The robot arm 194 can move the secondary hoof nozzle 3 with the secondary hoof nozzle 33 facing forward and upward in the direction of movement of the dairy cow. Robot arms 193 and 194 hold piping 14 that connects to nozzles 32 and 33.

The sensor 191 detects the front toes and accessory hoof of the cow's hind legs within a set range, and includes a reflective optical sensor that scans the hoof within the set range three-dimensionally, and a reflective optical sensor that scans the hoof within the set range three-dimensionally. A three-dimensional image sensor that captures images at the source can be used. The sensor 191 may include sensors for inter-toe detection and accessory hoof detection.

When the disinfection device 1C (its control device 2C) receives a signal indicating that milking is finished from the control device 97 of the milking device 9, the sensor 191 detects the front interdigital and accessory hoofs of the cow's hind hooves. Determine the three-dimensional coordinate area. The disinfection device 1C drives the robot arm 193 to spray disinfectant between the front toes of the dairy cow's hind legs using the hoof wall nozzle 32. The disinfection device 1C drives the robot arm 194 to spray a disinfectant onto the secondary hoof of the dairy cow's hind legs using the secondary hoof nozzle 33. When the sterilization device 1C detects that the dairy cow has left the milking device 9 using a sensor (not shown), it ends the spraying by the nozzles 31 to 33.

(Effects of the fifth embodiment)
The disinfection device 1C directly sprays the disinfectant between the toes on the front side of the hind legs of the dairy cow, and therefore has a good disinfection effect on the between the toes.

(Sixth embodiment)
FIG. 16 is a sectional view of the disinfection device 1D.
In the sterilization device 1D, the upper end of the sterilization side pit 84 expands outward in plan view, and this portion becomes a stepped portion 842. There is a tank 41 made of stainless steel, for example, that covers the disinfection side pit 84. A tank 41 is located on the floor through which the animals pass and contains a disinfectant solution. The tank 41 stores a disinfectant solution under pressure. In the tank 41, both ends in the direction of movement of the dairy cow (left-right direction in FIG. 16) are supported by stepped portions 842. In the tank 41, hoof sole nozzles 31D are arranged in a matrix in a plan view. A plurality of mats 83 are installed on the tank 41. The depth of the stepped portion 142 is such that the tank 41 and the mat 83 can be accommodated therein. The disinfection side pit 84 does not need to be connected to the milking side pit 81, and the disinfectant solution in the disinfection side pit 84 may be discharged to the outside via the discharge port 843 in the disinfection side pit 84.

FIG. 17 is a plan view showing the gap S leading to the disinfection side pit 84.
The stepped portion 842 is annular in plan view. The tank 41 is rectangular in plan view. The width of the disinfection side pit 84 in the direction perpendicular to the direction of movement of the dairy cow (vertical direction in FIG. 17) is larger than the width of the tank 41. Therefore, a gap S not covered by the tank 41 is formed at the upper opening of the disinfection side pit 84. The disinfectant sprayed from each hoof sole nozzle 31D and falling onto the mat 83 passes through the mat opening 831, slit 832, and gap S and falls into the disinfection side pit 84.

FIG. 18 is a schematic diagram for explaining the operating principle of the hoof sole nozzle 31D.
The tank 41 has a hole 410 through which the hoof sole nozzle 31D passes. The hoof sole nozzle 31D is provided in the tank 41 so as to be retractable downward from the reference position, and is given a restoring force to the reference position. When the nozzle 31D for the sole of the hoof is stepped on by a dairy cow and immersed in the lower part, the disinfectant solution is ejected onto the floor.

The mat opening 831 of the mat 83 installed on the tank 41 has the same diameter as the hole 410, and is connected vertically. The hoof sole nozzle 31D includes a main body 311, a head 312, and a spring 313. The main body 311 has a columnar shape and is fixed in an upright position within the tank 41. The outer diameter of head 312 is smaller than hole 410. The head 312 is inserted into the tip of the main body 311 and can slide vertically relative to the main body 311, and can slide downward from a reference position to a maximum set width. Head 312 may be made of plastic or stainless steel. At the bottom of the head 312 is a flange 314 that is radially larger than the hole 410.

The spring 313 is passed through the main body 311 and is installed in a compressed state between the inner wall of the tank 41 and the flange 314 of the head 312 . Normally, the head 312 passes through the hole 410 and the mat opening 831 and is in a state where the tip thereof is exposed above the floor. Normally, the flange 314 of the head 312 is pressed against the peripheral edge of the hole 410 by the spring 313 and closes the hole 410. An annular rubber ring 315 through which the head 312 is inserted is installed on the flange 314 to increase the degree of close contact between the flange 314 and the peripheral edge of the hole 410.

When the cow's hoof steps on the head 312 and pushes it downward, the hole 410 is unblocked by the collar 314, and the high-pressure disinfectant in the tank 41 is squirted upward from the gap between the head 312 and the hole 410. This allows disinfectant to be applied directly to the cow's hooves.

(Effects of the sixth embodiment)
In the disinfection device 1D, a disinfectant solution can be applied directly to the sole of a dairy cow's hoof by using the cow's weight without using electricity. In addition, since the disinfectant is automatically sprayed when the dairy cow steps on the floor, a sensor for detecting the dairy cow and a trigger for starting and ending spraying of the disinfectant from the milking device 9 can be received, and the control device becomes unnecessary. Therefore, the disinfection device 1D can have a simple configuration, can be installed at an appropriate location, and has versatility.

The features of the invention may be implemented in several embodiments without departing from its characteristics. The embodiments, modifications, and effects described above are merely illustrative and should not be construed as limiting the invention. The embodiments and modifications described above are not limited by any of the embodiments and modifications described above, unless otherwise stated, and should be broadly construed within the scope of the claims. The features, structures, and methods of the embodiments and variations described above can be added to and combined in various ways to obtain alternative configurations.

1-1E... Disinfection device, 2-2C... Control device (control unit), 9... Milking device, 10... Disinfection passage, 11... Cover, 11A... Pipe, 12... Inter-toe nozzle (first nozzle), 12A... Between-toe nozzle (second nozzle), 13...Sensor for detecting opening of exit gate, 13A...Sensor for detecting closing of entrance gate, 31-31D...Nozzle for hoof sole, 33...Nozzle for secondary hoof, 82- 82D... Pit cover, 84... Disinfection side pit, 93... Inlet gate of milking device, 98... Outlet gate, 111... Opening, 111A... Pipe opening, 121... Check valve (first valve), 143... Annular path, 144 ...pressure addition path, 153...circulation pump, 154...spray pump, 155...check valve (second valve), 314...spray port, 821...pit opening, 831-831D...mat opening, 832...slit.

Claims (7)

a concave disinfection pit formed on the floor and through which the falling disinfectant is drained to the outside;
a sterilization pit cover provided in the sterilization pit, having a plurality of pit openings that cover an upper opening of the sterilization pit and allow a sterilization solution to fall into the sterilization pit, and on which the animal rides;
a plurality of hoof sole nozzles that are provided in the disinfection pit and spray the disinfectant solution upwardly through the pit opening to disinfect the hoof of the animal that rides on the disinfection pit cover; , comprising;
The disinfection pit is provided on the floor of the disinfection passage leading to the outlet of the milking device,
A concave milking pit covered with a milking pit cover having a plurality of openings is provided on the inner floor of the milking device,
The disinfection pit is connected to the milking pit and is shallower than the milking pit, and the disinfectant solution in the disinfection pit flows into the milking pit,
In the milking pit, the animal cleaning agent falling through the milking pit cover and the disinfectant liquid flowing from the disinfection pit are drained to the outside of the disinfection device. a concave disinfection pit formed on the floor and through which the falling disinfectant is drained to the outside;
a sterilization pit cover provided in the sterilization pit, having a plurality of pit openings that cover an upper opening of the sterilization pit and allow a sterilization solution to fall into the sterilization pit, and on which the animal rides;
a plurality of hoof sole nozzles that are provided in the disinfection pit and spray the disinfectant solution upwardly through the pit opening to disinfect the hoof of the animal that rides on the disinfection pit cover; , comprising;
the pit openings are rectangular and arranged in a matrix on the disinfection pit cover;
A plurality of rectangular mats each having a mat opening formed in the center thereof and a plurality of slits connected to the mat opening,
The plurality of mats are arranged in a matrix on the sterilization pit cover in correspondence with the pit openings, and the mat openings and the pit openings are vertically connected to each other in the sterilization device. The disinfection device according to claim 1 or claim 2 ,
The spray opening of the hoof sole nozzle is located within the pit opening. A disinfection device,
a concave disinfection pit formed on the floor and through which the falling disinfectant is drained to the outside;
a sterilization pit cover provided in the sterilization pit, having a plurality of pit openings that cover an upper opening of the sterilization pit and allow a sterilization solution to fall into the sterilization pit, and on which the animal rides;
a plurality of hoof sole nozzles that are provided in the disinfection pit and spray the disinfectant solution upwardly through the pit opening to disinfect the hoof of the animal that rides on the disinfection pit cover; , comprising;
The hoof sole nozzle is located on each of the left and right hind feet of the animal,
A secondary hoof nozzle provided on each left and right hind foot for disinfecting the secondary hooves of the left and right hind feet of the animal riding on the disinfection pit cover has a spray port located above the floor and relative to the hoof sole nozzle. The disinfecting device is located outside the disinfecting device in a direction intersecting the traveling direction of the animal, and sprays the disinfecting solution forward and upward in the traveling direction of the animal. The disinfection device according to claim 2 or claim 4 ,
The disinfection pit is provided on the floor of the disinfection passage leading to the outlet of the milking device,
A concave milking pit covered with a milking pit cover having a plurality of openings is provided on the inner floor of the milking device,
The disinfection pit is connected to the milking pit and is shallower than the milking pit, and the disinfectant solution in the disinfection pit flows into the milking pit,
In the milking pit, the animal cleaning agent falling through the milking pit cover and the disinfectant liquid flowing from the disinfection pit are drained to the outside of the disinfection device. The disinfection device according to any one of claims 1 to 5 ,
In the disinfection device, the disinfectant is salt-free hypochlorous acid water. The disinfection device according to any one of claims 1 to 6 ,
The animal is an artiodactyl, such as a cow.