JP2020005574A - Disinfection device - Google Patents

Abstract

To provide a sterilization technique capable of sterilizing many cows continuously, and sterilizing a site where hoof disease is likely to occur in a hoof.SOLUTION: A disinfection device includes a cover installed on a floor where an animal stands, and having an opening opened at least in a horizontal direction, on a higher position than the floor surface, and on a position corresponding to the back side of a hoof of a heel of the animal, and a first nozzle covered with the cover, for spraying antiseptic solution through the opening toward the back side of the hoof of the heel of the animal.SELECTED DRAWING: Figure 2

Description

  The embodiments described in this specification relate to hoof disinfection techniques.

  Techniques for disinfecting hooves with a disinfectant solution for preventing hoof disease are known (for example, Patent Documents 1 and 2). Patent Literature 1 describes disinfecting a hoof by passing a tub storing a disinfectant solution through a dairy cow and causing the dairy cow to perform a foot bath. Patent Literature 2 describes disinfecting hooves by spraying a disinfecting solution downward from a spray nozzle on a side wall of a passage while passing a dairy cow through a washing passage.

Special table 2005-514022 Special table 2003-534824

  In Patent Literature 1, when dirt adhering to dairy cow feet is brought into the tank, the effect of the disinfectant is reduced by the dirt. Therefore, in Patent Literature 1, it is necessary to change the disinfectant in the tub every time a certain number of dairy cows pass through the tub, and it is not possible to continuously sterilize many dairy cows.

  In Patent Literature 2, a disinfectant is sprayed downward from a spray nozzle on a side wall of a passage toward a hoof of an animal passing through the passage. For this reason, the disinfecting solution is directly applied to the hoof wall, but it is difficult to apply the disinfecting solution to the soles and between the toes where hoof disease is likely to occur.

  It is an object of the present specification to provide a disinfection technique capable of continuously disinfecting a large number of dairy cows and capable of disinfecting a hoof-prone portion of a hoof.

  The disinfection device of the embodiment is installed on the floor on which the animal stands, and has a cover having an opening that is open at least in a horizontal direction at a position higher than the floor surface and at a position corresponding to the rear side of the hoof of the hind foot of the animal, A first nozzle that is covered with a cover and sprays an antiseptic solution through the opening toward a rear side of a hoof of a hind foot of the animal.

  In the disinfecting device of the embodiment, the cover is located in front of the entrance gate of the milking device, and a sensor that detects that the exit gate of the milking device is opened, and that the sensor detects that the front exit gate is opened, A control unit for spraying a disinfecting solution from the first nozzle. In the disinfecting device of the embodiment, the cover is located in front of an outlet of the milking device, receives a signal indicating the end of milking from the milking device, sprays the disinfecting solution from the first nozzle, and the animal A control unit that stops spraying of the disinfecting liquid from the first nozzle by receiving a signal indicating that the user has exited the milking device from the milking device.

  In the disinfecting apparatus of the embodiment, 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 circulating pump that circulates a disinfecting liquid in the annular path, A spray pump for applying a high pressure and a second valve which is a pressure applying path connecting the spray pump to the annular path, and permits only a flow of the disinfectant from the spray pump toward the annular path are provided. A pressure applying path, wherein the controller is configured to circulate the disinfecting liquid in the annular path by reducing the pressure of the annular path to or below the set pressure by the circulation pump during normal times when the disinfecting liquid is not sprayed. When spraying the disinfecting liquid, the disinfecting liquid is sprayed from the first nozzle by making the pressure of the annular path larger than the set pressure by the spray pump.

  The disinfecting apparatus of the embodiment is a pipe standing at a position sandwiching the passage area of the animal, a pipe having an opening at least horizontally opened toward the passage area on the floor side, the pipe is located in the pipe, the passage area A second nozzle that sprays a disinfecting solution through the opening toward the rear side of the hoof of the animal passing through the second nozzle.

  In the disinfection device of the embodiment, the pipe is in front of an entrance gate of the milking device, and a sensor that detects that an exit gate of the milking device is open, and that the sensor detects that the exit gate is open, A control unit for spraying a disinfecting solution from the first nozzle.

  The disinfecting apparatus of the embodiment has an opening, a floor material through which an animal passes, and a hoof bottom nozzle for spraying a disinfecting solution on the hoof bottom of the animal, wherein the nozzle is located below the floor material and the opening And a hoof sole nozzle for spraying a disinfecting solution toward the upper side of the floor via the floor.

  In the disinfecting apparatus of the embodiment, there is a disinfecting passage leading to the outlet of the milking device, provided on the floor of the disinfecting passage, a concave disinfecting pit for draining, and a disinfecting solution and filth on the floor drop to the disinfecting pit. A pit cover for covering the disinfecting side pits, and a mat placed on the pit cover, wherein the mat is connected to one of the pit openings to form the opening together with any of the pit openings. A mat opening, and a mat connected to the mat opening, and a slit for dropping the disinfecting solution and filth to the disinfecting side pit through the pit opening, and the pit cover and the mat are provided with the mat. Make up the flooring.

  In the disinfecting apparatus of the embodiment, the disinfecting side pit is connected to the milking side pit provided under the floor of the milking apparatus, and is shallower than the milking side pit, and the disinfecting liquid in the disinfecting side pit is the milking liquid. It flows into the side pit. In the disinfecting apparatus of the embodiment, the hoof sole nozzle is provided for each of the left and right hind paws of the animal, and the secondary hoof is provided for each of the left and right sub hoes to disinfect the left and right hind paws of the animal. The nozzle is located above the floor, in the direction intersecting the traveling direction of the animal in the disinfection device with respect to the hoof bottom nozzle, with respect to the floor, and disinfects the disinfecting solution in the traveling direction of the animal. Spray forward and upward.

  The disinfecting apparatus of the embodiment is a tank for storing a disinfecting solution on a floor through which an animal passes, and a hoof sole that is provided in the tank so as to be immersed downward from a reference position and is provided with a restoring force to the reference position. A nozzle for a hoof sole, wherein the disinfecting solution is ejected toward the floor when the animal is stepped down by the animal and sunk downward.

  In the disinfecting apparatus of the embodiment, the disinfecting solution is salt-free hypochlorous acid water, and the animal is an artiodactyl such as a cow.

It is a top view which shows the disinfection apparatus and milking apparatus of 1st Embodiment. It is sectional drawing of a disinfection apparatus. It is a figure showing the example of composition of the course of a disinfecting solution. It is a figure showing a disinfection device of a 2nd embodiment. It is a figure showing a disinfection device of a 3rd embodiment. It is a figure showing the example of composition of the course of a disinfecting solution. It is a figure showing composition of a floor of a milking device and a disinfection device of a 4th embodiment. It is a perspective view of a pit cover and a mat. It is sectional drawing which shows a mode that a mat bends. It is sectional drawing which shows the other example of a mat opening. It is a top view showing the position of the hoof bottom nozzle. It is a side view which shows the position and orientation of a nozzle. It is a figure which shows the example of a structure around the disinfection side pit in the path | route which supplies a disinfecting solution to the nozzle of a hind leg. It is a figure showing the composition of the floor of the milking device in which the disinfection device of a 4th embodiment was incorporated. It is a schematic diagram which shows the structure of a nozzle for a hoof wall and a nozzle for a sub hoof. It is sectional drawing of the disinfection apparatus of 5th Embodiment. It is a top view which shows the clearance gap leading to a disinfection side pit. It is a mimetic diagram for explaining the operation principle of a nozzle for hoof soles.

Hereinafter, each embodiment will be described with reference to the drawings.
(1st Embodiment)
FIG. 1 is a plan view showing the disinfection 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 barn. The disinfection device 1 will be described later.

  The milking device 9 uses the concentrated feed as a bait, and causes the dairy cow to enter the device 9 spontaneously and milk automatically. The milking device 9 includes a milking passage 90 formed by the opposed frames 91 and 92. The frame 91 includes a plurality of poles each extending in the horizontal direction and provided with a gap vertically. The frame 92 has a column on the side of the entrance gate 93, a column on the side of the exit gate 98, and a plate-shaped wall provided between both columns so that the lower end is located at the height of the trunk of the dairy cow. , Is provided. The milking device 9 moves the tub 94 and the robot arm 95 into and out of the milking passage 90 between the wall and the floor. A roof that covers the upper part of the milking passage 90 is attached to the frame 92.

  The milking passage 90 has a length and a width that can accommodate one cow. The milking apparatus 9 detects the presence or absence of a cow in the area in front of the entrance gate 93 by a sensor that senses a change in infrared rays in the area in front of the entrance gate 93. The milking device 9 reads the identification information of the cow from the wireless tag attached to the cow using a reader. The milking device 9 opens the entrance gate 93 when receiving milk cows into the device 9. Each of the entrance and exit gates 93 and 98 includes a plurality of poles each extending in the horizontal direction and provided with a gap vertically. At the entrance and exit gates 93, 98, the lower pole is at about the height of the cow's torso.

  The milking device 9 puts out the tub 94 in the milking passage 90 ahead of the cow in the traveling direction, and feeds the tub 94 with concentrated feed. The dairy cow goes ahead of the milking passage 90 and eats concentrate. The milking device 9 closes the entrance gate 93 when the camera installed on the roof detects that the cow has entered the milking passage 90.

  The milking apparatus 9 puts the movable robot arm 95 into the milking passage 90, detects the position of the nipple with a sensor, cleans the nipple, and attaches a teat cup to the nipple. The milking device 9 milks the milk, sends the milk to the tank, and detects a component, a temperature, and the like related to the milk with a sensor. A concave pit is provided on the floor of the milking passage 90, and a weigh scale 96 is provided so as to close the pit. The dairy cow is on the weigh scale 96 while eating the concentrate. The milking device 9 measures the weight of the dairy cow by the weigh scale 96. The information related to 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 unit, similarly to the control device 2 described later.

  The weigh scale 96 is provided with a drain port 961 for dropping dirt and nipple cleaner into the pit. A plurality of bars for preventing the hoof from dropping are provided in the drainage port 961 with a gap therebetween. Dirt falling into the pit is discharged out of the pit through a discharge port provided in the pit. The user can operate the control device 97 and check the information on milk and the weight of the 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 the entrance and exit gates 93 and 98. The user can operate the milking apparatus 9 and make various settings on the setting screen displayed on the display.

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

  The disinfecting device 1 sprays a disinfecting solution on the hoof of the rear foot of the cow in the milking device 9. The disinfecting apparatus 1 includes a cover 11, a nozzle 12 between toes, a sensor 13, and a control device 2.

  The cover 11 is installed on the floor on which the animal stands, and the cow passes above. The cover 11 is made of, for example, stainless steel. The cover 11 extends in an orthogonal direction (vertical direction in FIG. 1) orthogonal to the traveling direction of the cow (horizontal direction in FIG. 1). The cover 11 has openings 111 at positions corresponding to the rear sides of the hooves of the left and right hind legs of the cow. The opening 111 faces the traveling direction of the cow in the milking passage 90. In the space under the cover 11, there is a nozzle 12 for inter-toes (first nozzle) at a location corresponding to the opening 111. The nozzle 12 between the toes sprays a disinfecting solution through the opening 111. The nozzle 12 between the toes spreads the disinfecting solution in a conical shape and sprays it. Spraying of the disinfecting liquid by the intertoe 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 that allows a magnet attached to the exit gate 98 to open and close a contact of a reed switch at an appropriate position in accordance with opening and closing of the exit gate 98 can be used.

  The control device 2 includes a processor 21, a memory 22, a display 23, and an input unit 24. The processor 21 executes various processes of the disinfecting apparatus 1 such as a disinfecting solution spraying process by reading a program in the memory 22. The display 23 displays information acquired by the disinfection device 1, a setting screen of the disinfection device 1, and the like. The input unit 24 receives a user's 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 curves, and flat plate portions 113 connected to both ends of the main body portion 112 in the traveling direction of the cow (the 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 concrete, and the cover 11 may be embedded in concrete such that the portion having the opening 111 is exposed upward. The opening 111 is at a position higher than the floor surface and is open at least in the horizontal direction. The pipe 14 through which the disinfecting liquid flows is passed through the space below the main body 112. The toe nozzle 12 is attached to the pipe 14. The toe nozzle 12 is covered by the cover 11 and is installed so that the tip or the like does not go outside through the opening 111. In the pipe 14, a heating wire 141 for keeping the pipe 14 warm is inserted. The heating wire 141 may be turned on manually, or may be turned on automatically when the environmental temperature is lowered by a thermostat.

  When the milking device 9 opens the exit gate 98 after milking, the control device 2 detects that the exit gate 98 is opened by the sensor 13, and sprays the disinfecting liquid by the interdigital nozzle 12. The intertoe nozzle 12 sprays the disinfecting solution through the opening 111 in a conical shape so as to include a component parallel to the floor. The position and angle of the intertoe nozzle 12 and the manner in which the disinfecting solution to be sprayed spreads (fog density) are determined by the disinfecting solution passing between the floor and the entrance gate 93 in the milking apparatus 9 as shown in FIG. The dairy cow is set to be sprayed from the rear side of the rear hoof of the dairy cow to the area including the accessory hoof.

  The hoof of the dairy cow is divided into an inner hoof located on the inner side in the width direction of the dairy cow (upper side in the enlarged view in FIG. 2) and an outer hoove located on the outer side in the width direction (lower side in the enlarged view in FIG. 2). Between the inner and outer hooves, a space between the toes is formed. A part of the disinfecting liquid sprayed from the intertoe nozzle 12 passes through the space between the toes from the rear of the hoof to the front, and disinfects the part between the toes of the hoof and directly hits the sole of the hoof. When the milking apparatus 9 closes the exit gate 98, the control device 2 detects that the exit gate 98 is closed by the sensor 13, and ends the spraying of the disinfecting liquid.

FIG. 3 is a diagram illustrating a configuration example of a disinfecting liquid path.
The piping 14 to which the nozzle 12 for toes is attached forms an annular path 143 passing through the circulation pump 153. The circulation pump 153 sends out the disinfecting solution from the tank 151 and circulates the disinfecting solution in the annular path 143. As the disinfecting solution, a salt-free type hypochlorous acid solution is used, but an appropriate solution can be used. The temperature of the disinfecting solution in the tank 151 is maintained at 36 ° C. to 40 ° C. by the heater 152. The intertoe 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 in the nozzle 12 between fingers. Normally, the control device 2 causes the circulation pump 153 to circulate the disinfecting liquid in the annular path 143 at a low pressure equal to or lower than the set pressure of the check valve 121.

  A pressure applying path 144 that connects the 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 disinfecting liquid from the tank 151 to the circulation path at high pressure via the check valve 155. Check valve 155 permits only one-way disinfectant flow from spray pump 154 to annular path 143. When spraying the disinfecting solution, the control device 2 sends the disinfecting solution at a high pressure by the spray pump 154 and sets the pressure of the annular path 143 to a higher pressure than the set pressure of the check valve 121. As a result, the check valves 121 of the inter-digital nozzles 12 are simultaneously opened, and the inter-digital nozzles 12 simultaneously spray the disinfecting liquid. As described above, by controlling the outputs of the pumps 153 and 154, the control device 2 can open the interdigital nozzle 12 and spray the disinfecting liquid only when disinfecting.

(Effect of First Embodiment)
Since the disinfecting apparatus 1 disinfects the hooves by spraying the disinfecting liquid, it is not necessary to exchange the disinfecting liquid in the tank, which is necessary when performing the disinfection in a foot bath. Therefore, the disinfecting apparatus 1 can continuously disinfect many cows. The disinfecting apparatus 1 sprays a disinfecting solution along the floor toward the rear side of the hoof of the rear foot of the cow. Some disinfectants escape from the back between the toes to the front. Thereby, the disinfecting apparatus 1 can disinfect the hoof wall, the hoof sole, and the space between the toes of the rear foot of the dairy cow. Where 90% of hoof disease occurs in the hind legs, the disinfecting device 1 has a simple configuration and is sufficient for preventing hoof disease in dairy cows by adopting a device configuration that targets only the hooves of the hind legs of the dairy cow. The effect can be achieved.

  The cover 11 and the inter-toe nozzle 12 of the disinfecting device 1 are in front of the entrance gate 93 of the milking device 9. Therefore, the disinfectant can be sprayed on the rear foot of the dairy cow whose position is defined by the milking device 9. Therefore, the disinfecting apparatus 1 can surely spray the disinfecting solution on the hooves of the rear foot of the dairy cow.

  If the cow is disinfected during milking, the cow will feel uncomfortable and may lose milk. Since the disinfecting apparatus 1 sprays the disinfecting liquid after detecting that the exit gate 98 is opened, it can be disinfected after milking, and does not reduce the milking amount. Since the disinfecting apparatus 1 sprays the disinfecting liquid after detecting that the exit gate 98 is opened, it is possible to encourage the dairy cow to leave the milking apparatus 9 and to improve the operation rate of the milking apparatus 9.

  Since dairy farming is often carried out in cold regions, prevention of freezing of a disinfectant solution and a nozzle for spraying the disinfectant solution is an issue. In the disinfecting apparatus 1, the entire interdigital nozzle 12 is covered with the cover 11 without the tip coming out of the opening 111. Therefore, the interdigital nozzle 12 can be kept warm by the cover 11, and the freezing of the interdigital nozzle 12 can be suppressed. In the disinfecting apparatus 1, the disinfecting solution in the pipe 14 is normally circulated at a low pressure by the circulation pump 153, and when the disinfecting liquid is sprayed, the disinfecting liquid is disinfected by the spray pump 154 to a stage preceding the pipe 14 to which the interdigital nozzle 12 is attached. Dispense the liquid. Therefore, the disinfectant can be sprayed simultaneously from the interdigital nozzle 12, and the freezing of the disinfectant can be suppressed in normal times. Further, since the heating wire 141 is additionally installed in the cover 11, the disinfecting solution in the pipe 14 can be prevented from freezing also by this. Thereby, even if the environmental temperature is −30 ° C., freezing of the disinfecting solution in the pipe 14 can be prevented.

  Since the disinfecting apparatus 1 uses salt-free hypochlorous acid water as the disinfecting liquid, the load on the environment can be suppressed as compared with the case where a disinfecting liquid containing formaldehyde or copper sulfate is used. Since salt-free hypochlorous acid water has no smell, it does not feel uncomfortable for dairy cows.

(Modification of First Embodiment)
The spraying range of the disinfecting liquid may be expanded by rotating the inter-toe nozzle 12 back and forth with respect to the dairy cow in the horizontal direction by an appropriate driving mechanism.

  The control device 2 of the disinfecting device 1 may start spraying the disinfecting liquid by receiving a signal indicating the end of milking or a signal indicating that the outlet gate 98 is opened from the control device 97 of the milking device 9. The control device 2 of the disinfecting device 1 may end the spraying of the disinfecting liquid by receiving a signal for closing the exit gate 98 from the control device 97 of the milking device 9. The milking apparatus 9 has a configuration in which the exit gate 98 is eliminated, the breeding tub 94 is moved out of the milking passage 90 by displacing the breeding tub 94 to the milking passageway 90, and the breeding tub 94 is moved out of the milking passageway 90 to permit the leaving of the cow. There are also things. The control device 2 of the disinfecting device 1 may end the spraying of the disinfecting liquid by receiving a signal from the control device 97 of the milking device 9 indicating that the cow has left the milking passage 90.

  When the disinfecting apparatus 1 (the cover 11 and the intertoe nozzle 12) is provided for a dairy cow that stays at the set position, the disinfecting solution can be effectively sprayed from behind on the hooves of the hind legs. Thus, the disinfection device 1 can be installed, for example, before the entrance to individual parlors in a rotary or parallel parlor, or before the entrance into each individual fence at a feed station. The disinfecting apparatus 1 may be installed in a passage through which the cow passes in one direction, and may be any type as long as the disinfectant can be sprayed from behind the cow toward the hoof of the hind foot of the cow.

  The animal to be sprayed with the disinfecting solution by the disinfecting apparatus 1 may not be a dairy cow, but may be an animal having hooves such as a horse, a pig, a goat, and a sheep. From the viewpoint of disinfection between toes, the effect of the disinfecting device 1 can be more exerted when the animal to be sprayed with the disinfecting solution by the disinfecting device 1 is an artiodactyla such as a cow.

(2nd Embodiment)
In the following description of each embodiment, a description of a configuration similar to that of the above-described embodiment will be omitted or briefly described.
FIG. 4 is a diagram illustrating the disinfection device 1E.
The disinfection device 1E is in front of the exit of the milking passage 90 of the milking device 9. The disinfection device 1E sprays the disinfection liquid from the interdigital nozzle 12 by receiving a signal indicating the end of milking from the milking device 9. As the dairy cows that have exited from the milking device 9 walk over the cover 11 of the disinfecting device 1E, the disinfecting device 1E applies the disinfecting solution behind the hooves of each hind foot. Some disinfectants pass from behind the toes forward and disinfect the space between the toes. The disinfecting device 1E stops spraying the disinfecting liquid from the interdigital nozzle 12 by receiving a signal from the milking device 9 indicating that the cow has exited the milking device 9.

(Effect of Second Embodiment)
The disinfecting apparatus 1E can disinfect the area between the toes of the rear foot of the dairy cow, as in the first embodiment.

(Third embodiment)
FIG. 5 is a diagram showing the disinfection device 1A.
The disinfection device 1A includes two pipes 11A. The two pipes 11A stand at a position sandwiching the passing area PA of the cow 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 apparatus 9 and opens at least in the horizontal direction. A pipe 14A passes through the pipe 11A. In the pipe 14A, the inter-toe nozzle 12A (second nozzle) is connected to a position corresponding to the opening 111A. The toe nozzle 12A is covered with a pipe 11A, and is installed so that the tip or the like does not go outside through the opening 111A. A heating wire (not shown) is provided in the pipe 14A.

  The nozzle for toes 12A sprays the disinfecting solution 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 manner of spreading the disinfecting solution to be sprayed, and the like are similar to those in the first embodiment. Is set to be sprayed. The disinfection device 1A detects the opening of the exit gate 98 of the milking device 9 with the sensor 13 or receives a signal indicating the end of milking from the milking device 9 to thereby control the rear foot of the cow in the milking device 9. An antiseptic solution is sprayed toward the hoof from the intertoe nozzle 12A. The disinfecting apparatus 1A terminates spraying of the disinfecting liquid by detecting that the exit gate 98 of the milking apparatus 9 is closed, or by receiving a signal indicating that the cow is leaving the milking apparatus 9.

FIG. 6 is a diagram illustrating a configuration example of a disinfectant solution path.
In the disinfecting apparatus 1A, there is no circulation pump 153, and the disinfecting liquid is sent from the tank 151 to the pipe 14A by the spray pump 154. The spray pump 154 includes an electromagnetic valve for switching between opening and closing of the pressure to the pipe 14A. When the control device 2A receives an instruction to spray the disinfecting liquid, the spray pump 154 quickly increases the pressure to the pipe 14A. Can be. In the disinfection apparatus 1A, a high pressure is applied to the pipe 14A from a normal time. The disinfecting apparatus 1A can instantaneously apply pressure to the pipe 14A by driving the spray pump 154 when spraying the disinfecting solution, whereby the check valve 121 of each interdigital finger nozzle 12A is instantaneously activated. When opened, the disinfectant is sprayed simultaneously from each inter-toe toe nozzle 12A.

(Effect of Third Embodiment)
The disinfecting device 1A sprays the disinfecting solution from the oblique rear side to the hoof of the rear foot of the dairy cow in the milking device 9 by the intertoe nozzle 12A. Some disinfectants escape from the back between the toes to the front. Thereby, the disinfecting apparatus 1A can disinfect the hoof wall, the hoof sole, and the space between the toes of the rear foot of the dairy cow.

  In the disinfecting apparatus 1A, since the interdigital nozzle 12A is covered with the pipe 11A and kept warm, the interdigital nozzle 12A can be prevented from freezing. In the disinfecting apparatus 1A, since the inside of the pipe 14A is heated by the hot wire, it is possible to prevent the disinfecting liquid in the pipe 14A from freezing.

(Modification)
The disinfecting apparatus 1A may spray the disinfecting solution from a diagonally rear side to the hoof of the rear foot of the dairy cow entering the milking apparatus 9 by the intertoe nozzle 12A.

(Fourth embodiment)
7: is a figure which shows the structure of the floor of the milking apparatus 9 and the disinfection apparatus 1B, FIG. 7: (A) is a top view, FIG. 7: (B) is sectional drawing.
The disinfection device 1B is provided at the outlet of the milking device 9. The disinfection device 1B will be described later.
On the floor of the milking apparatus 9, a concave milking side pit 81 extending along the traveling direction of the cow is formed. The milking side pit 81 is for draining a cleaning agent or the like used for cleaning dirt and nipples to the outside through a drain port 811. The milking pit 81 is closed by a pit cover 82. The pit cover 82 is supported by, for example, a bracket 812 fixed to the milking-side pit 81. A plurality of mats 83 are laid on the pit cover 82.

FIG. 8 is a perspective view of the pit cover 82 and the 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 dropping dirt and the like on the floor into the milking pit 81. The size of the pit opening 821 is smaller than the bottom of the dairy cow. As long as the pit cover 82 can support the dairy cow and can drop dirt and the like on the floor into the milking pit 81, the material, the number and the position of the pit openings 821 may be appropriately determined. The pit cover 82 may have a thickness of, for example, 50 mm.

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

FIG. 9 is a cross-sectional view showing a state in which the mat 83 is bent, FIG. 9A shows a state before bending, and FIG. 9B shows a state in which the mat 83 is bent.
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, by opening the slit 832, the mat 83 is easily bent downward. Therefore, dust, disinfecting solution, filth, and the like on the mat 83 easily fall into the pit opening 821 via the mat opening 831 and the slit 832. The mat opening 831 may not 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 length of the slit 832 in two directions that are shifted by 45 degrees from the certain two directions may be shorter than the length of the slit 832 in certain two directions (vertical and horizontal directions in FIG. 8) that intersect perpendicularly.

  Returning to FIG. 7, the disinfecting apparatus 1B includes the disinfecting passage 10 formed by the opposed frames 171 and 172. The disinfecting passage 10 is connected to the milking passage 90 and advances the cow in one direction. The disinfecting passage 10 has a length and a width that can accommodate one cow. In the disinfecting passage 10, there is an exit gate 173 at the tip of the cow in the traveling direction. The disinfection device 1B includes a sensor 174 that can detect the entry and exit of the dairy cow into the disinfection passage 10. The sensor 174 may use infrared rays such as a human sensor, or may be an imaging device that monitors the inside of the disinfecting passage 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 disinfecting side pit 84 is for draining disinfecting solution and waste, and is provided on the floor of the disinfecting passage 10. The disinfecting pit 84 is concave and extends in the traveling direction of the cow. The pit 84 on the disinfection side is shallower than the pit 81 on the milking side, and is connected to the pit 81 on the milking side via the communication port 85. The disinfecting solution and the waste in the disinfecting pit 84 flow to the milking pit 81 via the communication port 85.

  The pit cover 82A, like the pit cover 82, has a lattice shape made of FRP and has a plurality of pit openings 821. The pit cover 82A is provided so as to close the opening of the pit 84 on the disinfection side. The pit cover 82A is supported by, for example, a bracket 841 fixed to the disinfection-side pit 84. As long as the pit cover 82A can support the dairy cow and can drop dirt and the like on the floor to the disinfecting pit 84, the material, the number and the position of the pit openings 821 may be appropriately determined.

  On the pit cover 82A, mats 83 that are the same as the mats 83 used in the milking device 9 are installed and fixed for each pit opening 821. The mat 83 has a mat opening 831 and a slit 832 formed therein. The pit cover 82A and the mat 83 constitute a floor material of the disinfecting passage 10 through which the animal passes. The pit opening 821 and the mat opening 831 are connected vertically.

  The pipe 14 through which the disinfecting solution flows is passed through the disinfecting side pit 84. The hose 14 is connected to the hoof bottom nozzle 31. The hoof bottom nozzle 31 sprays the disinfecting liquid toward the floor via the pit opening 821 and the mat opening 831. The spray port of the hoof bottom nozzle 31 may be in the pit opening 821. The hoof bottom nozzle 31 can spray the disinfectant solution directly on the hoof bottom when the dairy cow has the hoof bottom at the corresponding mat opening 831.

FIG. 11 is a plan view showing the position of the hoof bottom nozzle 31.
The dairy cow coming out of the milking device 9 waits until the exit gate 173 opens at the head in the disinfection passage 10. There are a plurality of hoof sole nozzles 31 in a region where the hooves of the left and right hind legs at the standby position of the dairy cow are expected to touch the ground. In the present embodiment, five rows of the hoof sole nozzles 31 are arranged for each hind leg of the dairy cow in the direction perpendicular to the traveling direction, with five rows arranged in the traveling direction of the dairy cow. That is, fifteen hoof sole nozzles 31 are provided for each hind leg of a dairy cow.

  The disinfecting apparatus 1B includes a hoof bottom nozzle 31, a hoof wall nozzle 32, and a sub hoof nozzle 33 as a hoof disinfecting nozzle. There is one hoof wall nozzle 32 for each foot of the dairy cow. The hoist wall nozzle 32 is shifted to both outer sides (upper and lower sides in FIG. 11) in the orthogonal direction from the hoof bottom nozzle 31 and the disinfection side pit 84, and is on standby. The cow in position is forward in the direction of travel with respect to the hooves of each foot. There is one accessory hoof nozzle 33 for each foot of the dairy cow, a position deviated from the hoof sole nozzle 31 and the disinfecting side pit 84 to both outer sides (upper and lower sides in FIG. 11) in the orthogonal direction, and on standby. The dairy cow in position is behind the hooves of each foot in the direction of travel. Each of the nozzles 32 and 33 is connected to the pipe 14 and supplied with a disinfecting liquid.

FIG. 12 is a side view showing the positions and directions of the nozzles 31 to 33.
The hoof wall nozzle 32 is installed such that the spray port is positioned higher than the hoof wall of the dairy cow, and sprays the disinfecting liquid obliquely downward toward the rear in the traveling direction of the dairy cow. The accessory hoist nozzle 33 is installed such that the spray port is located above the floor and lower than the accessory hoof, and sprays the disinfecting liquid obliquely upward toward the front in the traveling direction of the cow.

FIG. 13 is a diagram showing an example of a configuration around the disinfecting pit 84 in a path for supplying disinfecting liquid to the nozzles 31 to 33 of the hind legs.
The supply of the disinfecting liquid to the nozzles 31 to 33 is performed using the circulation pump 153 and the spray pump 154 as in the first embodiment. For example, the rear feet nozzles 31 to 33 are connected to the pipe 14. The disinfecting liquid in the pipe 14 supplied from the tank 15 is normally circulated at a low pressure by the circulation pump 153 and at a high pressure by the spray pump 154 during spraying, whereby the check valve attached to the nozzles 31 to 33 is provided. Is opened, and the disinfecting liquid is sprayed from each of the nozzles 31 to 33 simultaneously. The pipe 14 is provided in a meandering manner in the disinfection-side pit 84, and a row of the hoof bottom nozzles 31 is connected to each of the folded linear portions. The hoof wall nozzle 32 is provided at an upper U-shaped portion of a portion of the pipe 14 that is disposed on the floor, and is provided above the floor. The sub hoof nozzle 33 is provided at a position arranged on the floor of the pipe 14, and is provided above the floor. The supply route of the disinfecting solution to the nozzles 32 and 33 of the forefoot can be realized with the same configuration.

  The dairy cow leaves the milking device 9 and enters the disinfection device 1B, proceeds to the exit gate 173, and waits. The disinfection device 1B (the control device 2B thereof) sprays disinfectant from each of the nozzles 31 to 33 when the sensor 174 detects the entry of the dairy cow into the disinfection passage 10. When the dairy cow stands by at the standby position, the rear foot of the dairy cow is located in the set area. As a result, the disinfectant is sprayed from each of the nozzles 31 to 33 onto the hoof bottom, hoof wall, and accessory hoof of the rear hoof of the dairy cow. When the set time has elapsed, the disinfecting apparatus 1B terminates spraying of the disinfecting liquid and opens the outlet gate 173. The disinfection device 1B closes the exit gate 173 when the sensor 174 detects that the cow has exited the disinfection passage 10. The timing of the start and end of the disinfectant spraying can be set as appropriate. For example, the disinfecting apparatus 1B starts spraying the disinfecting liquid when the sensor detects that the exit gate 98 of the milking apparatus 9 is opened, and when the sensor detects that the exit gate 98 of the milking apparatus 9 is closed, the disinfecting liquid sprays. May be terminated.

(Effect of Fourth Embodiment)
The side hoof of a dairy cow does not contact the floor when the floor is relatively hard in a barn or the like, but when the floor is soft on the ground or the like, it contacts the floor together with the hoof floor and becomes dirty. The hoof wall faces forward and sideward in the traveling direction of the dairy cow and is upward, and the accessory hoove faces backward and downward with respect to the traveling direction of the dairy cow. Therefore, with the conventional disinfecting apparatus that sprays the disinfecting liquid downward from the spray nozzle on the side wall of the passage, the disinfecting liquid is not sufficiently sprayed on the accessory hooves.

  Since the disinfecting device 1B sprays the disinfecting liquid upward and forward in the traveling direction of the dairy cow by the accessory hoof nozzle 33, the disinfecting liquid can be sprayed on the accessory hoof from the front. Further, the disinfecting apparatus 1B can disinfect the hoof wall with the hoof wall nozzle 32, so that the entire hoof can be disinfected.

  Since the disinfecting apparatus 1B can spray the disinfecting solution directly from the hoof bottom nozzle 31 below the pit cover 82A and the mat 83 to the bottom of the dairy cow through the pit opening 821 and the mat opening 831, the hoof is effectively disinfected. it can.

  Since the same mat 83 as the milking device 9 is used as the mat 83 of the disinfecting device 1B, the cow is unlikely to feel uncomfortable on the floor of the disinfecting device 1B.

(Modification of Fourth Embodiment)
The row of hoof sole nozzles 31 may be one row for each hind foot of the dairy cow, or only one hoof sole nozzle 31 may be provided for each hind foot of the dairy cow. The pit cover 82A only needs to have an opening through which the disinfecting solution sprayed by the hoof bottom nozzle 31 can pass through the mat 83, and the size and shape of the opening can be appropriately set. The configuration of the pipe 14 connected to the nozzles 31 to 33 can be set as appropriate. The disinfecting passage 10 does not have to be straight, the layout is free, and the disinfecting passage 10 may be bent in the middle. A hoof sole nozzle 31 may be provided for the forefoot of the dairy cow. The height position of the spray port of the hoof bottom nozzle 31 may be below the pit cover 82A, may be inside the mat opening 831 or may be on the floor.

  Since the disinfection device 1B determines whether or not the cow is at the set position by the sensor 174, the spraying process can be started without being 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)
14: is a figure which shows the structure of the floor of the milking apparatus 9 in which the disinfection apparatus 1C was integrated, FIG. 14 (A) is a top view, FIG. 14 (B) is a sectional view.
The disinfection device 1C is incorporated in the milking device 9. A pit 81 is provided on the floor of the milking device 9, and a pit cover 82 is provided so as to close the pit 81. A mat 83 is provided on the pit cover 82. The pit opening 821 and the mat opening 831 are connected vertically. In the pit 81, the hoof sole nozzle 31 is provided in each area where the left and right hind legs of the dairy cow during milking are located. The hoof bottom nozzle 31 is connected to the pipe 14 through which the disinfectant circulates. The hoof bottom nozzle 31 sprays the disinfecting liquid toward the upper part of the floor through the pit opening 821 and the mat opening 831.

FIG. 15 is a schematic diagram showing the configurations of the hoof wall nozzle 32 and the sub hoove nozzle 33.
The disinfection device 1C transmits the sensor 191, the hoof wall nozzle 32, and the accessory hoof nozzle 33 to the inside and outside of the milking passage 90 through a gap between the frame 92 (FIG. 14) and the floor of the milking device 9, and the robot arms 192 to 194, respectively. Can be moved. The technique of moving a sensor or a certain element in and out of the milking passage 90 through the gap between the frame 92 and the floor of the milking device 9 and moving the sensor and certain elements three-dimensionally moves the sensor or teat cup for milking in and out of the milking passage 90. The technology of the existing robot arm 95 that moves three-dimensionally can be applied.

  The robot arm 193 can move the hoof wall nozzle 32 in a posture where the hoof wall nozzle 32 faces backward and downward in the traveling direction of the cow. The robot arm 194 can move the accessory hoof nozzle 3 with the accessory hoof nozzle 33 facing forward and upward in the traveling direction of the cow. The robot arms 193 and 194 hold the piping 14 connected to the nozzles 32 and 33.

  The sensor 191 detects a space between the toes and an accessory hoof of the rear foot of the dairy cow in the setting range, and a reflective optical sensor that scans the hoof in the setting range three-dimensionally and a tertiary hoof in the setting range. It is possible to use a three-dimensional image sensor that captures images at the source. The sensor 191 may include sensors for inter-toe detection and accessory hoof detection.

  Upon receiving a signal indicating that milking is completed from the control device 97 of the milking device 9, the disinfecting device 1C (the control device 2C thereof) uses the sensor 191 to detect the distance between the front toes and the accessory hoof of the rear foot of the dairy cow. Determine the three-dimensional coordinate area. The disinfecting apparatus 1C drives the robot arm 193 to spray the disinfecting solution using the hoof wall nozzle 32 between the front toes of the rear foot of the dairy cow. The disinfecting apparatus 1C drives the robot arm 194 to spray the disinfecting liquid on the accessory hoof of the dairy cow using the accessory hoist nozzle 33. When the disinfection device 1C detects that the cow has exited the milking device 9 by a sensor (not shown), the disinfection by the nozzles 31 to 33 ends.

(Effect of Fifth Embodiment)
Since the disinfecting apparatus 1C sprays the disinfecting solution directly on the forefoot between the hind legs of the dairy cow, the disinfecting effect between the toes is good.

(Sixth embodiment)
FIG. 16 is a cross-sectional view of the disinfection device 1D.
In the disinfecting apparatus 1D, the disinfecting-side pit 84 has an upper end portion which is open outward in a plan view, and the portion becomes a step portion 842. There is a tank 41 made of, for example, stainless steel, which covers the pit 84 on the disinfection side. The tank 41 is located on the floor through which the animals pass and contains a disinfectant. The tank 41 stores the disinfectant in a state where pressure is applied to the disinfectant. In the tank 41, both ends of the cow in the traveling direction (the left-right direction in FIG. 16) are supported by the steps 842. In the tank 41, the hoof bottom nozzles 31D are arranged in a matrix in plan view. A plurality of mats 83 are installed on the tank 41. The depth of the step portion 142 is a depth that can accommodate the tank 41 and the mat 83 inside. The disinfecting pit 84 may not be connected to the milking pit 81, and the disinfecting liquid in the disinfecting pit 84 may be discharged to the outside via the outlet 843 in the disinfecting pit 84.

FIG. 17 is a plan view showing a gap S leading to the disinfection side pit 84. FIG.
The step portion 842 is annular in plan view. The tank 41 is rectangular in plan view. The width of the disinfection-side pit 84 in a direction orthogonal to the traveling direction of the dairy cow (the vertical direction in FIG. 17) is larger than the width of the tank 41. Therefore, a gap S that is not covered by the tank 41 is formed at the upper opening of the disinfection-side pit 84. The disinfecting solution sprayed from each hoof bottom nozzle 31D and falling on the mat 83 falls into the disinfecting side pit 84 through the mat opening 831, the slit 832, and the gap S.

FIG. 18 is a schematic diagram for explaining the operating principle of the hoof bottom nozzle 31D.
The tank 41 has a hole 410 through which the hoof bottom nozzle 31D penetrates. The hoof bottom nozzle 31D is provided in the tank 41 so as to be immersed downward from the reference position, and is provided with a restoring force to the reference position. When the hoof bottom nozzle 31D is stepped down by the cow and sinks downward, the disinfecting solution is ejected toward the floor.

  The mat opening 831 of the mat 83 installed on the tank 41 is concentric with the hole 410 and is connected vertically. The hoof bottom 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 while standing in the tank 41. The outer diameter of the head 312 is smaller than the hole 410. The head 312 is inserted into the tip of the main body 311 and is slidable vertically with respect to the main body 311. The head 312 can slide downward from the reference position to a maximum and a set width. The head 312 may be made of plastic or stainless steel. At the lower part of the head 312, there is a flange portion 314 that is larger in the radial direction 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. In a normal state, the head 312 is in a state of protruding on the floor through the hole 410 and the mat opening 831. Normally, the flange 314 of the head 312 is pressed against the periphery of the hole 410 by the spring 313 to close the hole 410. In addition, an annular rubber ring 315 through which the head 312 is inserted is provided on the flange 314 to increase the degree of adhesion between the flange 314 and the peripheral edge of the hole 410.

  When the hooves of the dairy cow step down on the head 312 and press down, the closure of the hole 410 by the flange 314 is released, and the high-pressure disinfectant in the tank 41 is ejected upward from the gap between the head 312 and the hole 410. This allows the disinfectant to be applied directly to the cow's hooves.

(Effect of Sixth Embodiment)
In the disinfecting apparatus 1D, the disinfecting liquid can be applied directly to the bottom of the dairy cow using the weight of the dairy cow without using electric power. In addition, since the dairy cow automatically ejects the disinfecting liquid by stepping on the floor, it receives a sensor for detecting the dairy cow, a trigger for starting the disinfecting liquid ejection start from the milking apparatus 9, and a control device. Becomes unnecessary. Therefore, the disinfecting apparatus 1D can have a simple configuration, can be installed at an appropriate place, and has versatility.

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

  1 to 1E: disinfection device, 2-2C: control device (control unit), 9: milking device, 10: disinfection passage, 11: cover, 11A: pipe, 12: nozzle for interdigital (first nozzle), 12A: interdigital Nozzles (second nozzles), 13: a sensor for detecting that the exit gate is open, 13A: a sensor for detecting that the entrance gate is closed, 31 to 31D: a nozzle for a hoof sole, 33: a nozzle for a secondary hoof, 82 to 82D: pit cover, 84: disinfection side pit, 93: entrance gate of milking device, 98: exit gate, 111: opening, 111A: opening of pipe, 121: check valve (first valve), 143: annular path, 144 ... Pressure application path, 153 circulating pump, 154 spray pump, 155 check valve (second valve), 314 spray port, 821 pit opening, 831 to 831D Opening, 832 ... slit.

Claims (13)

A cover that is installed on the floor on which the animal stands and has an opening that opens at least horizontally in a position higher than the floor surface and at a position corresponding to the rear side of the hoof of the hind foot of the animal,
A first nozzle that is covered by the cover and sprays an antiseptic solution through the opening toward a rear side of a hoof of a hind leg of the animal;
Disinfection device equipped with. The disinfection device according to claim 1,
Said cover is in front of the entrance gate of the milking device;
A sensor for detecting that an exit gate of the milking device is opened,
When the sensor detects that the outlet gate is opened, a control unit that sprays a disinfectant solution from the first nozzle,
Disinfection device equipped with. The disinfection device according to claim 1,
Said cover is in front of the outlet of the milking device,
By receiving a signal indicating the end of milking from the milking device, spraying an antiseptic solution from the first nozzle, and receiving from the milking device a signal indicating that the animal has exited the milking device, A control unit for stopping spraying of the disinfecting liquid from the first nozzle;
Disinfection device equipped with. In the disinfection device according to claim 2 or 3,
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 for circulating the disinfecting solution in the annular path;
A spray pump for applying high pressure to the annular path;
A pressure application path that connects the spray pump to the annular path, and a pressure application path provided with a second valve that allows only the flow of the disinfecting solution from the spray pump toward the annular path,
The controller is configured to circulate the disinfecting liquid in the annular path by setting the pressure of the annular path to be equal to or less than the set pressure by the circulation pump during normal time when the disinfecting liquid is not sprayed, and when spraying the disinfecting liquid, A disinfecting device that sprays disinfecting liquid from the first nozzle by making the pressure of the annular path higher than the set pressure by a spray pump. A pipe standing at a position sandwiching the animal passage area, wherein the pipe has an opening at least horizontally opened toward the passage area on the floor side,
A second nozzle in the pipe, spraying a disinfectant through the opening toward a rear side of the hoof of the animal passing through the passage area;
Disinfection device equipped with. The disinfection device according to claim 5,
Said pipe is in front of the entrance gate of the milking device,
A sensor for detecting that an exit gate of the milking device is opened,
When the sensor detects that the outlet gate is opened, a control unit that sprays a disinfectant solution from the first nozzle,
Disinfection device equipped with. There is an opening, floor material through which animals pass,
A hoof bottom nozzle for spraying a disinfectant solution on the bottom of the animal, wherein the nozzle is located below the floor material and sprays the disinfectant solution upward through the opening through the opening. A disinfection device comprising: The disinfection device according to claim 7,
There is a disinfection passage leading to the outlet of the milking device,
A concave disinfection-side pit that is provided on the floor of the disinfection passage and performs drainage;
A pit cover for covering the disinfecting pit with a plurality of pit openings for dropping disinfecting solution and waste on the floor to the disinfecting pit,
A mat that is placed on the pit cover, the mat opening being connected to one of the pit openings and forming the opening together with the one of the pit openings, and a disinfecting solution connected to the mat opening through the pit opening. And a slit for dropping filth into the disinfecting side pit, and a mat,
The disinfecting device, wherein the pit cover and the mat constitute the floor material. The disinfection device according to claim 8,
The disinfecting apparatus, wherein the disinfecting side pit is connected to a milking side pit provided below the floor of the milking apparatus, is shallower than the milking side pit, and a disinfecting liquid in the disinfecting side pit flows to the milking side pit. The disinfection device according to any one of claims 7 to 9,
The hoof sole nozzle is located on each of the left and right hind paws of the animal,
In order to disinfect the side hooves of the right and left hind legs of the animal, the side hoist nozzles for each of the left and right side hooves have a spray port above the floor and the hoof bottom nozzle in the disinfecting device with respect to the hoof bottom nozzle A disinfecting device which is located outside in a direction intersecting with the traveling direction of the animal and sprays the disinfecting solution forward and upward in the traveling direction of the animal. A tank on the floor through which animals pass, containing a disinfectant solution,
A hoof sole nozzle that is provided in the tank so as to be immersed downward from a reference position, and is provided with a restoring force to the reference position.When the animal is stepped on and sunk downward, the disinfecting liquid faces the floor. A disinfecting device comprising: The disinfection device according to any one of claims 1 to 11,
The disinfecting apparatus, wherein the disinfecting solution is salt-free hypochlorous acid water. The disinfection device according to any one of claims 1 to 12,
The disinfecting device, wherein the animal is an artiodactyl such as a cow.