JP6753606B2 - Pet water dispenser and its filter - Google Patents

Description

The present invention relates to a pet water dispenser for supplying drinking water to pets such as dogs and cats, and a filter thereof.

When watering dogs and cats kept as pets, it is common to set up a container such as a bowl that stores water in a predetermined place and let the pet drink water from that container at an appropriate time. Is. However, in such a method of giving water, the water in the bowl may be left for a long time, which is not preferable in terms of hygiene.

Therefore, in recent years, as shown in Patent Documents 1 and 2 below, a circulation type automatic water dispenser (watering device) has been proposed in which water is automatically circulated and supplied.

This automatic circulation type water dispenser for pets is provided with a water storage tank for storing water, a filter provided above the water storage tank, and a water drinking section provided above the filter to collect water in the water storage tank. The water is pumped up to the water drinking section by a circulation pump, distributed to the drinking section, passed through a filter, and then circulated so as to be returned to the water storage tank. In this way, the water is circulated so that the pet can drink the water circulating in the drinking area.

On the other hand, a donut-shaped filter 9 as shown in FIG. 13 is well known as a filter used in a conventional circulation type automatic water dispenser.

The filter 9 includes a filter tray 90. The filter tray 90 includes a donut-shaped bottom wall 92 in which a large number of water passage holes 91 are formed, and the outer peripheral wall 93 is integrally formed in a rising shape along the outer peripheral edge portion of the bottom wall 92, and is inside. The inner peripheral wall 94 is integrally formed so as to rise along the peripheral edge portion. Further, between the outer peripheral wall 93 and the inner peripheral wall 94, four partition walls 95 extending in the radial direction are formed at equal intervals along the circumferential direction, and the filter tray 90 is formed by the partition walls 95 in four internal filtration chambers. It is partitioned into. Activated carbon 98 is housed in each internal filtration chamber, and a donut-shaped non-woven fabric 99 is attached to the opening on the upper surface of the filter tray 90 so as to close the opening.

The filter 9 is detachably attached between the water storage tank and the drinking portion of the circulation type automatic water dispenser. Then, the water returning from the drinking portion to the water storage tank passes through the non-woven fabric 99 of the filter 9 from the upper surface side thereof, is filtered, is further filtered through the activated carbon 98, and is further filtered through the water passage hole 91 of the bottom wall 92. It is designed to flow out and return to the water storage tank.

Japanese Unexamined Patent Publication No. 2014-97010 JP-A-2014-97011

However, in the conventional filter 9 shown in FIG. 13, when the non-woven fabric 99 is attached to the filter tray 90, the non-woven fabric 99 is welded and adhered to the upper end surfaces of the outer peripheral wall 93, the inner peripheral wall 94 and the partition wall 95 of the filter tray 90. I try to do it. Therefore, as shown in FIG. 14, in the welded portion 95a corresponding to the partition wall 95 in the nonwoven fabric 99, since the fibers constituting the nonwoven fabric 99 are melted and solidified, the upper surface of the partition wall 95 is in a thin and flat state with almost no bulk. On the other hand, the portion of the non-woven fabric 95 that does not correspond to the outer peripheral wall 93, the inner peripheral wall 94, and the partition wall 95 (the portion without a wall) is in a bulky and raised state, and is grooved along the welded portion 95a on the upper surface of the nonwoven fabric 99. Waterway-like part is formed. Therefore, a part of the water that has fallen on the upper surface of the non-woven fabric 95 of the filter 9 flows into the groove-shaped water channel-shaped welding portion 95a, and the water W flows on the non-woven fabric along the welding portion 95a, and the water flows. W may flow from the outside to the center along the welded portion 95a without passing through the activated carbon 98 or the non-woven fabric 99 of the filter 9, and may be returned to the water storage tank through the central hole. As described above, some water may not pass through a filter medium such as activated carbon 98 or non-woven fabric 99, and there is a problem that sufficient filtration performance may not be reliably obtained.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a pet water dispenser and a filter thereof, which can surely obtain sufficient filtration performance.

In order to achieve the above object, the gist of the present invention is as follows.

[1] A water drinking section is provided above the water storage tank, and the water supplied from the water storage tank to the water drinking section is detachably provided between the water storage tank and the water drinking section of the pet water dispenser so as to return to the water storage tank. Also, it is a filter for pet water dispensers that allows water returning from the drinking part to the water storage tank to pass from the upper surface side to the lower surface side.
An outer peripheral wall and an inner peripheral wall are provided so as to rise on the outer peripheral edge portion and the inner peripheral edge portion of the bottom wall in which the water passage holes are formed, and a plurality of internal filtration chambers are provided in the bottom wall in the circumferential direction between the outer peripheral wall and the inner peripheral wall. A filter tray with multiple partition walls rising up and
A top-covered filter medium arranged to cover the upper end opening of the filter tray and composed of a physical filter medium is provided.
The partition wall is formed from a main partition wall whose outer edge is connected to the outer peripheral wall and whose inner edge is arranged at a position separated from the inner peripheral wall in the outer radial direction, and from the inner edge of the main partition wall. A bifurcated base end wall that is bifurcated and is arranged so as to extend on both sides along a substantially circumferential direction, and an outer end edge is connected to the bifurcated base end wall, and an inner end edge is connected to the inner peripheral wall, respectively. With a bifurcated tip wall arranged to be connected,
The upper surface coating filter medium is a filter for a pet water dispenser, characterized in that it is fixed to at least the main partition wall and the bifurcated tip wall.

[2] The filter for a pet water dispenser according to item 1 above, wherein the upper surface covering filter medium is fixed to the bifurcated base end wall.

[3] The filter for a pet water dispenser according to item 1 or 2 above, wherein the outer peripheral edge portion of the upper surface covering filter medium is arranged so as to project outward from the outer peripheral edge portion of the filter tray.

[4] The filter for a pet water dispenser according to any one of items 1 to 3 above, wherein the upper surface coating filter medium is made of a non-woven fabric.

[5] The filter for a pet water dispenser according to any one of items 1 to 4 above, which is formed in a donut shape in a plan view.

[6] The filter for a pet water dispenser according to any one of items 1 to 4 above, which is formed in a semicircular arc shape in a plan view.

[7] A water storage tank, a filter provided detachably on the upper side of the water storage tank, and a water drinking section provided on the upper side of the filter are provided, and water supplied from the water storage tank to the water drinking section presses the filter. A pet water dispenser that passes from the upper surface side to the lower surface side and returns to the water storage tank.
In the filter, an outer peripheral wall and an inner peripheral wall are provided so as to rise on the outer peripheral edge portion and the inner peripheral edge portion of the bottom wall having water passage holes, and a plurality of the outer peripheral wall and the inner peripheral wall are provided on the bottom wall in the circumferential direction. A filter tray in which a plurality of partition walls for partitioning the internal filtration chamber of the above are provided in a rising shape, and a top-covered filter medium which is arranged so as to cover the upper end opening of the filter tray and is composed of a physical filter medium.
The partition wall is formed from a main partition wall whose outer edge is connected to the outer peripheral wall and whose inner edge is arranged at a position separated from the inner peripheral wall in the outer radial direction, and from the inner edge of the main partition wall. A bifurcated base end wall that is bifurcated and is arranged so as to extend on both sides along a substantially circumferential direction, and an outer end edge is connected to the bifurcated base end wall, and an inner end edge is connected to the inner peripheral wall, respectively. With a bifurcated tip wall arranged to be connected,
A water dispenser for pets, wherein the upper surface coating filter medium is fixed to at least the main partition wall and the bifurcated tip wall.

According to the filter of the pet water dispenser of the invention [1], the portion corresponding to the main partition wall of the upper surface covering filter medium is formed in a groove-shaped channel shape, and water flows from the outside to the inside along the channel-shaped portion. To do. Therefore, in the present invention, since the upper surface covering filter medium is fixed to the branch tip wall, a raised portion is formed inside the portion corresponding to the main partition wall of the upper surface covering filter medium. Therefore, the water flowing through the partition wall-corresponding portion is dammed and diffused by the raised portion, so that the water permeates the upper surface covering filter medium, passes through the filter, and returns to the storage tank. In this way, it is possible to prevent a problem that a part of the water flowing through the portion corresponding to the main partition wall of the upper surface coating filter medium returns to the storage tank without passing through the upper surface coating filter medium, and the water is surely passed through the upper surface coating filter medium. Since it can be filtered, sufficient filtration performance can be obtained.

According to the filter of the pet water dispenser of the invention [2], since the upper surface covering filter medium is also fixed to the branch base end wall, the entire partition wall is fixed to the upper surface covering filter medium, and the internal filtration chamber in the filter tray. It is possible to reliably partition each of the above and to improve the mounting strength of the top covering filter medium.

According to the filter of the pet water dispenser of the invention [3], since the outer peripheral edge portion of the upper surface covering filter medium is arranged outside the outer peripheral edge portion of the filter tray, the water trying to pass outside the filter tray is also on the upper surface. It can be filtered by passing it through the outer peripheral edge of the coated filter medium, and the filtration performance can be further improved.

According to the filter of the pet water dispenser according to the inventions [4] to [6], the above effect can be obtained more reliably.

According to the pet water dispenser of the invention [7], since the main part is the same as that of the invention [1], the same effect as described above can be obtained.

FIG. 1 is a perspective view showing a state in which the top funnel is separated in the circulation type automatic water dispenser for pets according to the first embodiment of the present invention. FIG. 2 is a front sectional view showing the water dispenser of the first embodiment. FIG. 3 is a perspective view showing the filter applied to the water dispenser of the first embodiment in an exploded manner. FIG. 4 is a plan view showing the filter of the first embodiment. FIG. 5 is a cross-sectional view of the filter of the first embodiment. FIG. 6 is a schematic plan view for explaining a welded portion of the upper surface coating filter medium in the filter of the first embodiment. FIG. 7 is a plan view showing the tray of the filter of the first embodiment. FIG. 8 is a perspective view showing a state in which the top funnel is separated in the circulation type automatic water dispenser for pets according to the second embodiment of the present invention. FIG. 9 is a perspective view showing the filter applied to the water dispenser of the second embodiment in an exploded manner. FIG. 10 is a plan view showing the filter of the second embodiment. FIG. 11 is a cross-sectional view of the filter of the second embodiment. FIG. 12 is a plan view showing the tray of the filter of the second embodiment. FIG. 13 is a perspective view showing the conventional filter in an exploded manner. FIG. 14 is a schematic plan view for explaining a welded portion of the non-woven fabric in the conventional filter.

FIG. 1 is a perspective view showing a state in which the top funnel is separated in the pet circulation type automatic water dispenser P1 according to the first embodiment of the present invention, and FIG. 2 is a front sectional view showing the water dispenser P1 according to the first embodiment. ..

As shown in both figures, the pet circulation type automatic water dispenser P1 of the first embodiment is suitably used for pets such as dogs and cats. The water dispenser P1 includes a water storage tank 1, a support frame 2, a top funnel 3, and a filter 5 as basic components.

The water storage tank 1 is watertight so that drinking water for pets can be stored inside, and is configured by a container having an open upper end. The peripheral wall surrounding the water storage tank 2 has a substantially elliptical horizontal cross section, so that the upper end opening is also formed in a substantially elliptical shape in a plan view.

A support frame 2 is detachably attached to the upper end opening of the water storage tank 1. The support frame 2 has a substantially concave spherical shape or a substantially bowl shape, and a concave step portion 21 for installing a filter having a circular shape in a plan view is formed in the central portion. On the bottom wall of the concave step portion 21 for installing the filter, a tubular portion 22 for mounting the top funnel is formed in the central portion, and an opening 23 for water passage is formed on the outside of the tubular portion 22. (See FIG. 2).

The filter 5 is configured to be mounted on the bottom wall of the concave step portion 21 for installing the filter in the support frame 2, and in such a mounted state, the filter 5 has a size that can be accommodated in the concave step portion 21 for installing the filter. Is formed in.

As shown in FIGS. 3 to 7, the filter 5 includes a filter tray 6, an internal filter medium 71, and a top surface covering filter medium 72.

The filter tray 6 is formed in a donut shape in a plan view in which a circular central hole 60 is formed in the center. The filter tray 6 is provided with a bottom wall 61, and an outer peripheral wall 62 is formed continuously in the circumferential direction on the outer peripheral edge portion on the upper surface side of the bottom wall 61 in a rising shape.

In the first embodiment, the outer peripheral wall 62 is formed so as to be gradually located inward from the upper side to the lower side, and is composed of an inclined wall that inclines downward toward the inner side. The outer peripheral wall 62 has a constant gradient over almost the entire area from the upper end to the lower end, and the cross section is formed in a straight line.

On the upper surface side of the bottom wall 61, four partition walls 65 to 67 for partitioning the upper surface side into four internal filtration chambers along the circumferential direction are formed in a rising shape. Each partition wall includes a main partition wall 65, a bifurcated base end wall 66, and a bifurcated tip wall 67.

The main partition wall 65 is arranged at a position where the outer edge is connected to the outer peripheral wall 62 and the inner edge is separated from the peripheral edge of the central hole 60 in the outer diameter direction (near the peripheral edge of the central hole 60). As such, they are arranged along the radial direction. The position of the peripheral edge of the central hole 60 in the filter tray 6 corresponds to the position of forming the inner peripheral wall 63, which will be described later.

The bifurcated base end wall 66 is arranged so as to bifurcate from the inner end edge of the main partition wall 65 and extend to both sides along a substantially circumferential direction. Further, the bifurcated tip wall 67 is substantially connected so that the outer edge is connected to both side edges of the bifurcated base end wall 66 in the circumferential direction, and the inner edge is arranged at the position of the peripheral edge of the central hole 60. They are arranged along the radial direction.

Further, an inner peripheral wall 63 is formed on the outer peripheral edge of the central hole 60 on the upper surface side of the bottom wall 61 so as to connect the adjacent bifurcated tip walls 67. In the present embodiment, the inner peripheral wall 63 is not formed in the portion corresponding to the bifurcated base end wall 66, but is formed intermittently (discontinuously) along the circumferential direction. The inner peripheral wall 63 does not necessarily have to be formed intermittently in the circumferential direction, and may be formed continuously in the circumferential direction.

Further, a large number of elongated water passage holes 64, which are long in the circumferential direction, are formed on the bottom wall 61 so as to be arranged in the circumferential direction and the radial direction.

The filter tray 6 is made of, for example, an integrally molded product of a hard synthetic resin, and the bottom wall 61, the outer peripheral wall 62, the inner peripheral wall 63, and the partition walls 65 to 67 are integrally formed with each other. Further, the outer peripheral wall 62, the inner peripheral wall 63, and the upper end surfaces of the partition walls 65 to 67 in the filter tray 6 are configured to be arranged on the same plane.

In the filter tray 6, the internal filter media 71 is housed in each of the internal filtration chambers partitioned by the partition walls 65 to 67. As the internal filter medium 71, an adsorption filter medium such as activated carbon is used. In the present embodiment, the internal filter medium 71 is an activated carbon bag in which activated carbon or the like is packed.

A donut-shaped top surface covering filter medium 72 in a plan view is attached to the top surface opening in the filter tray 6 so as to cover the top surface opening. In the present embodiment, as the top surface coating filter medium 72, a physical filter medium such as a non-woven fabric is used. The top-covered filter medium 72 made of the non-woven fabric is welded to the filter tray 6 as shown below.

FIG. 6 is a schematic plan view for explaining the welded portions 62a, 63a, 65a, 66a, 67a of the top covering filter medium 72 in the filter 5 of the first embodiment.

As shown in FIGS. 4 and 6, the upper surface covering filter medium 72 is welded (fixed) to a portion corresponding to the upper end surface of the outer peripheral wall 62 and a portion corresponding to the entire circumference of the inner peripheral edge portion including the upper end surface of the inner peripheral wall 63, respectively. ), The welded portions (fixed portions) 62a and 63a are formed. Further, the upper surface covering filter medium 72 is welded (fixed) to the entire upper end surface of the partition wall, that is, to the portions corresponding to the upper end surfaces of the main partition wall 65, the bifurcated base end wall 66 and the bifurcated tip wall 67, respectively. Welded portions (fixed portions) 65a, 66a, 67a are formed.

The welded portions 62a, 63a, 65a, 66a, 67a of the top covering filter medium 72 are formed by welding and solidifying the fibers of the non-woven fabric constituting the top covering filter medium 72, so that the walls 62, 63 are in a thin and flat state with almost no bulk. , 65, 66, 67, while the other parts of the upper surface covering filter medium 72 are in a bulky and raised state, and the welded portions 62a, 63a, 65a, 66a, 67a are grooved on the upper surface of the upper surface covering filter medium 72. It is formed like a waterway. However, in the present embodiment, on the inner end side of the main partition wall 65, the upper surface covering filter medium 72 is formed by welding the bifurcated base end wall 66 and the bifurcated tip wall 67 to form welded portions 66a and 67a. Of these, the region surrounded by the welded portions 66a and 67a rises in a bulky manner, and the raised portion 75 is formed. The raised portion 75 is arranged on the inner end side of the groove-shaped water channel-shaped portion formed by the welded portion 65a, and is arranged so as to block the channel-shaped portion in the middle. In the present embodiment, by adopting this configuration, the filtration performance can be improved as described in detail later.

On the other hand, as shown in FIGS. 3 to 5, in the present embodiment, the upper surface coating filter medium 72 is formed to have a diameter slightly larger than that of the filter tray 6, and the outer peripheral edge portion 73 of the upper surface coating filter medium 72 is the filter tray 6. It is arranged so as to project outward in the entire circumferential direction with respect to the outer peripheral edge portion (upper end of the outer peripheral wall). Further, the central hole of the upper surface covering filter medium 72 is formed to have a diameter slightly smaller than that of the central hole 60 of the filter tray 6, and the inner peripheral edge portion 74 of the upper surface covering filter medium 72 surrounds the central hole peripheral portion of the filter tray 6. It is arranged so as to overhang inward in the entire direction.

As shown in FIGS. 1 and 2, the filter 5 configured in this way is placed on the bottom wall of the concave step portion 21 for installing the filter in the support frame 2 provided in the water storage tank 1, so that the concave portion thereof is formed. It is housed in a state suitable for the step portion 21. In this accommodation state, the central hole 60 of the filter 5 is arranged corresponding to the top funnel mounting tubular portion 22 provided in the center of the bottom wall of the support frame 2.

Here, in the first embodiment, there is a slight gap between the outer peripheral edge portion (outer surface of the outer peripheral wall 62) of the filter tray 6 of the filter 5 and the inner surface of the peripheral wall of the concave step portion 21 for installing the filter in the support frame 2. However, in the first embodiment, since the outer peripheral edge portion 73 of the non-woven fabric top covering filter medium 72 of the filter 5 is formed so as to project outward, the outer peripheral edge portion 73 is described above. It is arranged so as to cover the upper part of the gap.

As shown in FIGS. 1 and 2, the top funnel 3 has an umbrella-shaped or mountain-shaped circular water drinking portion 31 and a water supply pipe 32 extending vertically downward from the central position on the lower surface side of the water drinking portion 31. It is composed of an integrally molded product of a hard synthetic resin provided with and. The upper end of the water supply pipe 32 is open to the upper surface side of the water drinking portion 31.

The lower end of the water supply pipe 32 of the top funnel 3 is fitted and fixed to the top funnel mounting tubular portion 22 of the support frame 2 via the central hole 60 of the filter 5. As a result, the top funnel 3 is supported by the support frame 2 in a state where the drinking portion 31 is arranged so as to cover the upper side of the filter 5 in the bowl-shaped support frame 2.

The top funnel 3 is mainly for cats and dogs. As in the first embodiment, the water drinking portion 31 is formed in an umbrella shape or a mountain shape, and the water drinking portion 31 has no portion where water collects. 3 is preferably used for cats. Further, as shown in the second embodiment described later, a top funnel provided with a recess for collecting water in the upper part of the drinking portion 31 is preferably used for dogs.

In the water supply device P1 of the first embodiment, a circulation pump (not shown) is housed in the water storage tank 1, and the discharge port of the circulation pump is connected to the lower end of the water supply pipe 32 in the top funnel 3. ..

The circulation type automatic water supply device P1 for pets of the first embodiment is configured as described above, and the above circulation pump is in a state where a predetermined amount of water is stored in the water storage tank 1 for drinking water of pets. Is driven, the water in the water storage tank 1 is discharged to the water supply pipe 32 of the top funnel 3 by the circulation pump, the water rises up the water supply pipe 32, and the upper surface of the water drinking portion 31 is opened from the upper end opening of the water supply pipe 32. It is released to the side. The discharged water flows down along the drinking portion 31 while diffusing in the outer peripheral direction due to its own weight, and flows out from the outer peripheral edge portion of the drinking portion 31 and falls. The water flowing out from the drinking portion 31 passes through the upper surface covering filter medium 72 of the filter 5 from top to bottom and is introduced into the filter tray 6, and further passes through the internal filter medium 71, and then the water passage hole 64 of the bottom wall 61. By passing through the filter 5, the water flows downward from the filter 5 and returns to the inside of the water storage tank 1.

In this way, water is circulated between the water storage tank 1 and the drinking section 31, and the water circulating in the drinking section 72 is allowed to be drunk by pets such as dogs and cats.

Further, by such circulation of water, the water passing through the filter 5 is scraped off by the top-covered filter medium 72 made of non-woven fabric, and the food waste, hair, dust and dirt of the pet are scraped off, while the internal filter medium 71 made of activated carbon is used. Unpleasant odors such as activated carbon are adsorbed and removed. By filtering and purifying the circulating water in this way, good water quality as drinking water is maintained.

On the other hand, in the water supply device P1 of the first embodiment, when the filter 5 is replaced, the top funnel 3 is removed to expose the filter 5, and then the filter 5 is used as a concave step portion for installing the filter of the support frame 2. It may be taken out from 21 and a new filter 5 may be accommodated in the recessed portion 21 to attach the top funnel 3.

In the circulation type automatic water dispenser P1 of the first embodiment, the bifurcated base end wall 66 and the bifurcated tip wall 67 are formed so as to bifurcate from the inner end of the main partition wall 65 of the filter tray 6 in the filter 5. Since the upper surface coating filter medium 72 is welded to the partition walls 65 to 67 to form the welded portions 65a to 67a, sufficient filtration performance can be surely obtained as described below.

That is, as shown in FIGS. 4 and 6, since the welded portion 65a is formed in a groove-shaped water channel shape as described above, a part of the water flowing down from the drinking portion 31 to the upper surface covering filter medium 72 of the filter 5 Water flows into the groove-shaped water channel-shaped welded portion 65a, and the water W flows from the outside to the inside along the welded portion 65a. On the other hand, as described above, a raised portion 75 is formed inside the waterway-shaped welded portion 65a, and the raised portion 75 is arranged so as to block the inner end side of the waterway-shaped welded portion 65a. Therefore, the water W flowing from the outside to the inside of the water channel-shaped welded portion 65a is dammed by the raised portion 75 to prevent further inward flow, and is along the outer peripheral edge (welded portion 66a) of the raised portion 75. It diffuses in the circumferential direction, permeates the upper surface covering filter medium 72, and penetrates into the filter tray 6. The water W that has entered the filter tray 6 in this way passes through the internal filter medium 71 and then passes through the water passage hole 64 of the bottom wall 61 and returns to the water storage tank 1. As described above, in the present embodiment, the water W flowing through the welded portion 65a returns to the water storage tank 1 through the central hole 60 without passing through the top surface coating filter medium 72 and the internal filter medium 71 (see FIG. 14). Can be reliably prevented, and the water flowing through the welded portion 65a can be reliably passed through the filter media 72 and 71 for filtration, so that sufficient filtration performance can be obtained.

In the present embodiment, the upper surface covering filter medium 72 is welded to the entire area of the partition walls 65 to 67, but the present invention is not limited to this, and in the present invention, the upper surface covering filter medium 72 is not necessarily attached to the bifurcated base end wall 66. There is no need to weld. That is, by welding the upper surface covering filter medium 72 to at least the main partition wall 65 and the bifurcated tip wall 67, a raised portion 75 can be formed inside the waterway-shaped welded portion 65a by the main partition wall 65. The water W flowing through the water channel-shaped welded portion 65a can be diffused and permeated into the upper surface coating filter medium 72, and sufficient filtration performance can be obtained. However, in the present invention, it is preferable to weld the top surface coating filter medium 72 over the entire area of the partition walls 65 to 67 as in the present embodiment. That is, when that configuration is adopted, it is possible to reliably partition each of the internal filtration chambers in the filter tray 6, and further, it is possible to improve the mounting strength of the top surface coating filter medium 72.

Further, in the first embodiment, the outer peripheral edge portion 73 of the upper surface covering filter medium 72 in the filter 5 is arranged so as to project outward from the outer peripheral edge portion (outer peripheral wall 62) of the filter tray 6. As a result, the outer peripheral edge 73 covers the upper part of the gap (filter outer gap) between the outer surface of the outer peripheral wall of the filter tray 6 and the inner surface of the peripheral wall of the concave step portion 21 for installing the filter in the support frame 2. Therefore, among the water flowing out from the outer peripheral edge portion of the water drinking portion 31, the water that tries to pass through the filter outer gap will pass through the outer peripheral edge portion 73 of the upper surface covering filter medium 72. Therefore, it is possible to reliably prevent the problem that a part of the water returns to the water storage tank 1 without being filtered, and the filtration performance can be further improved.

Further, in the first embodiment, since the inner peripheral edge portion 74 of the upper surface covering filter medium 72 in the filter 5 is arranged so as to project inward from the inner peripheral edge portion of the central hole of the filter tray 6, the inner peripheral edge portion 74 thereof. Therefore, the upper part of the gap (the gap inside the filter) between the inner peripheral edge of the central hole of the filter tray 6 and the outer peripheral surface of the water supply pipe of the top funnel 3 is covered. Therefore, among the water flowing out from the water drinking portion 31, the water that intends to pass through the above-mentioned filter inner gap passes through the inner peripheral edge portion 74 of the upper surface covering filter medium 72. Therefore, also in this respect, it is possible to reliably prevent the problem that a part of the water returns to the water storage tank 1 without being filtered, and the filtration performance can be improved even more reliably.

8 to 12 are diagrams showing a pet circulation type automatic water dispenser P2 according to a second embodiment of the present invention. The major difference between the water supply device P2 of the second embodiment and the water supply device P1 of the first embodiment is that the water supply device P1 of the first embodiment is a circular type, whereas the water supply device P1 of the second embodiment is a circular type. The point is that the water dispenser P2 is a semicircular type.

That is, in the water supply device P2 of the second embodiment, the water storage tank 1 is formed in a substantially semicircular shape in a plan view, and a support frame 2 having a substantially semicircular shape in a plan view is provided at the upper end opening thereof. Further, the support frame 2 is formed with a concave step portion 21 for installing a filter having a substantially semicircular shape in a plan view, and a filter 5 having a substantially semicircular shape or a substantially semicircular arc shape in a plan view is installed in the concave step portion 21. Has been done.

The filter 5 has an arc-shaped inner edge portion 60 corresponding to the central hole 60 of the filter 5 of the first embodiment formed at a position corresponding to the center of the arc.

In the second embodiment, the center side of the arc is the inner peripheral edge side, and the outer arc portion is the outer peripheral edge side.

Similar to the first embodiment, the partition wall of the filter 5 in the filter tray 6 has an outer end connected to the outer peripheral wall 62 and an inner end edge arranged at a position separated from the inner peripheral wall 63 in the outer diameter direction. The partition wall 65, the bifurcated base end wall 66 bifurcated from the inner edge of the main partition wall 65 and extending to both sides along the substantially circumferential direction, and the outer edge of the bifurcated base end wall 66 in the circumferential direction. It includes a bifurcated tip wall 67, which is connected to each edge and whose inner edge is connected to an inner peripheral wall 63, respectively. Further, in the same manner as described above, the upper surface covering filter medium 72 as a non-woven fabric is welded with the portions corresponding to the upper end surfaces of the outer peripheral wall 62, the inner peripheral wall 63, the main partition wall 65, the bifurcated base end wall 66 and the bifurcated tip wall 67. It is configured as a welded portion (fixed portion) 62a, 63a, 65a, 66a, 67a.

Further, the outer peripheral edge portion 73 of the upper surface covering filter medium 72 in the filter 5 is arranged so as to project outward from the outer peripheral wall 62 of the filter tray 6 as in the first embodiment, and the inner peripheral edge portion 74 is a filter. The tray 6 is arranged so as to project inward from the arcuate inner edge 60.

Further, the top funnel 3 has a water drinking portion 31 formed in a semicircular shape in a plan view. Then, the lower end of the water supply pipe 32 is supported by the support frame 2 through the arc-shaped notch 60 of the filter 5 so as to cover the filter 5 by the water drinking portion 31 as in the above embodiment.

Since the other configurations of the water dispenser P1 of the second embodiment are substantially the same as the configurations of the water dispenser P2 of the first embodiment, the same or corresponding parts are designated by the same reference numerals and duplicate description is omitted. To do.

In the water dispenser P2 of the second embodiment as well, the water flowing through the groove-shaped water channel as the welded portion 65 by the main partition wall 65 is formed inside the bifurcated base end wall 66 as in the first embodiment. By being dammed by the raised portion 75 and diffusing in the circumferential direction, the water passes through the upper surface coating filter medium 72 and the inner filter medium 71, so that some of the water returns to the water storage tank 1 without being filtered. Problems can be prevented and sufficient filtration performance can be obtained.

Further, also in the water dispenser P2 of the second embodiment, the outer peripheral edge portion 73 of the upper surface covering filter medium 72 of the filter 5 is arranged so as to project outward from the outer peripheral wall 62 of the filter tray 6 as in the first embodiment. At the same time, since the inner peripheral edge portion 74 is arranged so as to project inward from the inner edge portion 60 of the filter tray 6, the outer peripheral edge portion 73 and the inner peripheral edge portion 74 of the upper surface covering filter medium 72 thereby project to the outer side of the filter tray 6. And the upper part of the inner gap is covered. Therefore, of the water that flows out from the outer peripheral edge of the water drinking portion 31 and returns to the inside of the water storage tank 1, the water that tries to pass through each of the above gaps passes through the upper surface covering filter medium 72, which further improves the filtration performance. be able to.

In the above embodiment, in the partition wall of the filter tray 6, the bifurcated base end wall 66 is arranged so as to be substantially orthogonal to the main partition wall 65, but the present invention is not limited to this, and in the present invention, the main partition wall The inclination angle of the bifurcated base end wall 66 with respect to 65 is not particularly limited. Similarly, the inclination angle of the bifurcated tip wall 67 with respect to the bifurcated base end wall 66 is not particularly limited.

Further, in the above embodiment, in the partition wall of the filter tray 6, the radius of curvature of the corner portion between the main partition wall 65 and the bifurcated base end wall 66 is formed to be relatively small, but the present invention is not limited to this. The radius of curvature may be increased to form an arc. Similarly, the radius of curvature of the corner portion between the bifurcated base end wall 66 and the bifurcated tip wall 67 is not limited, and may be formed in an arc shape.

Further, in the above embodiment, the top surface coating filter medium 72 is welded and fixed (fixed) to the filter tray 6 by a solvent or heat, but the present invention is not limited to this, and in the present invention, it is adhered and fixed (fixed) using an adhesive. ) May be done.

Further, in the above embodiment, the non-woven fabric is used as the top-coating filter medium 72, but the present invention is not limited to this, and in the present invention, a physical filter medium other than the non-woven fabric such as a sponge may be used as the top-coating filter medium. ..

Further, in the above embodiment, activated carbon is used as the internal filter medium 71, but the present invention is not limited to this, and in the present invention, an adsorption filter medium or a chemical filter medium other than activated carbon such as zeolite may be used as the internal filter medium. good.

The pet water dispenser of the present invention can be used for supplying drinking water for pets such as dogs and cats.

1: Water storage tank 5: Filter 6: Filter tray 61: Bottom wall 62: Outer wall 63; Inner peripheral wall 64: Water flow hole 65: Main partition wall 66: Bifurcated base end wall 67: Bifurcated tip wall 72: Top covering filter medium 73 : Outer peripheral edges P1, P2: Circulating automatic water dispenser for pets

Claims (7)

A water drinking section is provided above the water storage tank, and the water supplied from the water storage tank to the water drinking section is returned to the water storage tank. A filter for pet water dispensers that allows water returning from the water tank to pass from the top side to the bottom side.
An outer peripheral wall and an inner peripheral wall are provided so as to rise on the outer peripheral edge portion and the inner peripheral edge portion of the bottom wall in which the water passage holes are formed, and a plurality of internal filtration chambers are provided in the bottom wall in the circumferential direction between the outer peripheral wall and the inner peripheral wall. A filter tray with multiple partition walls rising up and
A top-covered filter medium arranged to cover the upper end opening of the filter tray and composed of a physical filter medium is provided.
The partition wall is formed from a main partition wall whose outer edge is connected to the outer peripheral wall and whose inner edge is arranged at a position separated from the inner peripheral wall in the outer radial direction, and from the inner edge of the main partition wall. A bifurcated base end wall that is bifurcated and is arranged so as to extend on both sides along a substantially circumferential direction, and an outer end edge is connected to the bifurcated base end wall, and an inner end edge is connected to the inner peripheral wall, respectively. With a bifurcated tip wall arranged to be connected,
The upper surface coating filter medium is a filter for a pet water dispenser, characterized in that it is fixed to at least the main partition wall and the bifurcated tip wall. The filter for a pet water dispenser according to claim 1, wherein the upper surface coating filter medium is fixed to the bifurcated base end wall. The filter for a pet water dispenser according to claim 1 or 2, wherein the outer peripheral edge portion of the top covering filter medium is arranged so as to project outward from the outer peripheral edge portion of the filter tray. The filter for a pet water dispenser according to any one of claims 1 to 3, wherein the top coating filter medium is made of a non-woven fabric. The filter for a pet water dispenser according to any one of claims 1 to 4, which is formed in a donut shape in a plan view. The filter for a pet water dispenser according to any one of claims 1 to 4, which is formed in a semicircular arc shape in a plan view. It is provided with a water storage tank, a filter provided detachably on the upper side of the water storage tank, and a water drinking section provided on the upper side of the filter, and the water supplied from the water storage tank to the water drinking section presses the filter from the upper surface side. A pet water dispenser that passes through the bottom surface and returns to the water storage tank.
In the filter, an outer peripheral wall and an inner peripheral wall are provided so as to rise on the outer peripheral edge portion and the inner peripheral edge portion of the bottom wall having water passage holes, and a plurality of the outer peripheral wall and the inner peripheral wall are provided on the bottom wall in the circumferential direction. A filter tray in which a plurality of partition walls for partitioning the internal filtration chamber of the above are provided in a rising shape, and a top-covered filter medium which is arranged so as to cover the upper end opening of the filter tray and is composed of a physical filter medium.
The partition wall is formed from a main partition wall whose outer edge is connected to the outer peripheral wall and whose inner edge is arranged at a position separated from the inner peripheral wall in the outer radial direction, and from the inner edge of the main partition wall. A bifurcated base end wall that is bifurcated and is arranged so as to extend on both sides along a substantially circumferential direction, and an outer end edge is connected to the bifurcated base end wall, and an inner end edge is connected to the inner peripheral wall, respectively. With a bifurcated tip wall arranged to be connected,
A water dispenser for pets, wherein the upper surface coating filter medium is fixed to at least the main partition wall and the bifurcated tip wall.

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