Pet water fountain

Abstract

The application provides a pet water dispenser, which comprises a water tank, a pump, a filter device and a drinking part. The water tank has a water storage cavity; the pump comprises a pump inlet and a pump outlet, the pump inlet is communicated with the water storage cavity, and the pump is used for sending the liquid in the water storage cavity from the pump inlet to the pump outlet; the filter device comprises a shell, a filter element, a raw water space and a clean water space in the shell, the filter element is between the raw water space and the clean water space, and the raw water space is communicated with the pump outlet; the drinking part is communicated with the clean water space and is used for containing the liquid for drinking. When the pump works, the pump sends the liquid in the water storage cavity to the raw water space, the liquid in the raw water space passes through the filter element to enter the clean water space, and the liquid in the clean water space is sent to the drinking part. The liquid pumped by the pet water dispenser of the application is fully filtered by the filter element, and the pet can drink the healthy and clean water.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pet water drinking equipment, and particularly relates to a pet water drinking machine. BACKGROUND

[0002] With the improvement of people's living standards, more and more families begin to raise pets, and more and more attention is paid to the health of pets. For pet water drinking machine products, the general consideration is to enable pets to drink healthy and clean water.

[0003] The common pet water drinking machine on the market directly delivers water pumped from the water pump to the water drinking area without filtration. If the water added to the water tank cannot be directly drunk or the water in the water tank is polluted due to long storage time, the pet will drink unhealthy water. SUMMARY

[0004] In view of the deficiencies in the prior art, the present application aims to provide a pet water drinking machine, which delivers water to the water drinking area after filtration, and can provide healthy and clean drinking water for pets.

[0005] The present application provides a pet water drinking machine, comprising:

[0006] a water tank having a water storage cavity;

[0007] a pump comprising a pump inlet and a pump outlet, the pump inlet being in communication with the water storage cavity, and the pump being used to deliver liquid in the water storage cavity from the pump inlet to the pump outlet;

[0008] a filter device comprising a shell, a filter element, a raw water space and a purified water space in the shell, the filter element being between the raw water space and the purified water space, and the raw water space being in communication with the pump outlet;

[0009] a water drinking part in communication with the purified water space and used to hold liquid for drinking;

[0010] When the pump is working, the pump delivers liquid in the water storage cavity to the raw water space, the liquid in the raw water space passes through the filter element to enter the purified water space, and the liquid in the purified water space is delivered to the water drinking part.

[0011] Optionally, the raw water space is arranged outside the purified water space, and when the pump is working, the liquid in the raw water space passes through the filter element to enter the purified water space.

[0012] Optionally, a second air vent is arranged on the shell and in communication with the raw water space and the water storage cavity, and when liquid enters the raw water space, the gas in the raw water space can enter the water storage cavity through the second air vent.

[0013] Optionally, the second air vent is flush with the highest liquid level of the raw water space; when the liquid level of the raw water space exceeds the highest liquid level of the raw water space, the liquid in the raw water space can be discharged into the water storage cavity through the second air vent.

[0014] Optionally, the shell comprises a lower end cover and an air vent column protruding from the lower end cover, the air vent column is vertically arranged in the raw water space, the upper end of the air vent column is open to form the second air vent, and the lower end of the air vent column is provided with an air outlet, the air outlet penetrates the upper surface and the lower surface of the lower end cover.

[0015] Optionally, the pet water dispenser further comprises:

[0016] a purified water outlet in communication with the purified water space;

[0017] a first air vent in communication with the raw water space, the raw water space being in communication with the atmosphere outside the body of the pet water dispenser through the first air vent, and the first air vent being higher than the highest liquid level of the raw water space;

[0018] the gas in the purified water space is discharged out of the pet water dispenser through the purified water outlet, and the liquid in the purified water space is output to the water drinking part through the purified water outlet.

[0019] Optionally, the pet water dispenser further comprises a buffer space in communication with the purified water space and the purified water outlet, the buffer space being used for buffering the liquid flowing out of the purified water space to avoid the liquid being directly sprayed out of the purified water outlet; the liquid in the purified water space flows into the buffer space first, and then flows from the buffer space to the purified water outlet.

[0020] Optionally, the first air vent is in communication with the buffer space, the first air vent being in communication with the raw water space and the purified water outlet; when the raw water space inputs liquid, the gas in the raw water space is discharged out of the purified water outlet through the first air vent and the buffer space.

[0021] Optionally, the buffer space is located above the purified water space.

[0022] Optionally, the shell comprises the raw water space, the purified water space and the filter element, the shell comprises an upper end cover located at the top and the lower end cover located at the bottom, the purified water outlet is arranged on the upper end cover, a connecting pipe is arranged around the purified water outlet on the upper end cover, and the connecting pipe is the buffer space.

[0023] Optionally, the first air vent is arranged on the connecting pipe.

[0024] Optionally, a filter core outlet is arranged on the shell, the purified water space and the buffer space are communicated through the filter core outlet, and the filter core outlet is arranged staggeredly with the purified water outlet.

[0025] Optionally, the filter core comprises a filter core body and a filter core end cover connected to the upper portion of the filter core body, the lower end of the filter core body is arranged on the lower end cover, and the filter core end cover is connected with the connecting pipe.

[0026] The filter core is internally provided with the purified water space, the filter core end cover is provided with the filter core outlet for communicating the purified water space and the buffer space, and the water outlet direction of the filter core outlet deviates from the purified water outlet.

[0027] Optionally, the buffer space is formed by the connecting pipe and the filter core end cover.

[0028] Optionally, the purified water outlet is located above the raw water space.

[0029] Optionally, the second projection corresponding to the normal projection of the buffer space and the purified water space on the plane where the bottom surface of the filter device is located is overlapped with the first projection, and the second projection is smaller than the first projection.

[0030] Optionally, the filter core is a polypropylene activated carbon filter core, and the raw water space is placed with a hydrogen ion exchange resin member and a potassium ion exchange resin member.

[0031] Optionally, the pet water dispenser further comprises a descaling filter, which is placed in the raw water space and used for removing calcium and magnesium ions in the liquid in the raw water space.

[0032] Optionally, a ring body is arranged around the filter core outlet on the filter core end cover, and the ring body is sealed and matched with the connecting pipe through a sealing member.

[0033] Optionally, the connecting pipe is provided with a communication part, and after the connecting pipe is tightly combined with the ring body, the part of the communication part for communicating the buffer space and the raw water space constitutes the first exhaust hole.

[0034] Optionally, the communication part is a hole or a notch arranged on the connecting pipe.

[0035] Optionally, the opening area of the first exhaust hole is 10mm 2 ~ 14mm 2 .

[0036] Optionally, the lower end cover is further provided with a water inlet and a water outlet column, the water inlet and the exhaust port penetrating the upper surface and the lower surface of the lower end cover, the water outlet column being vertically arranged in the raw water space, the lower end of the water outlet column being open to communicate with the water inlet, the upper end of the water outlet column being open to form a filter core water inlet, and the second exhaust hole of the exhaust column being higher than the filter core water inlet.

[0037] Optionally, the water inlet is communicated with the pump outlet through a water outlet pipe, and the exhaust port is configured to be directed towards the water inlet.

[0038] When the liquid level in the raw water space exceeds the highest liquid storage surface of the raw water space, the liquid in the raw water space can reach the exhaust port through the second exhaust hole and backflow to the water storage cavity along the water outlet pipe.

[0039] Optionally, the opening area of the exhaust port is 2mm 2 -5mm 2 .

[0040] Optionally, the lower end cover is further provided with a positioning column, the positioning column being located in the raw water space, the edge of the filter core end cover being provided with a first positioning hole and a second positioning hole,

[0041] the lower end of the positioning column being connected to the lower end cover, the upper end of the positioning column being matched with the positioning portion of the upper end cover after penetrating the first positioning hole, the exhaust column penetrating the second positioning hole, and the second exhaust hole of the exhaust column having a gap with the upper end cover.

[0042] Optionally, the first positioning hole and the second positioning hole are different in size and / or shape.

[0043] Optionally, the top of the upper end cover has a flow guide surface extending from the purified water outlet to the drinking water portion, the flow guide surface being arranged as a recess extending from the vicinity of the purified water outlet to at least part of the edge of the upper end cover.

[0044] Optionally, a drinking water tray is arranged at the open upper end of the water tank, at least part of the drinking water tray constituting the drinking water portion.

[0045] Optionally, the drinking water tray has a recessed purified water holding portion and a backflow hole arranged beside the purified water holding portion, the purified water holding portion constituting the drinking water portion, and the backflow hole being communicated with the water storage cavity, liquid exceeding the highest liquid storage surface of the drinking water portion being able to backflow to the water storage cavity through the backflow hole.

[0046] Optionally, the depth of the drinking water portion is not less than 20mm, the depth referring to the vertical distance between the backflow hole and the bottom surface of the drinking water portion.

[0047] Optionally, the upper part of the water tank is further provided with a primary filter, the primary filter having a filter part for filtering liquid flowing back from the drinking water part to the water storage cavity.

[0048] Optionally, the filter part is below the drinking water part, and the filter part comprises a backflow port provided with a second filter structure.

[0049] Optionally, the filter part further comprises a buffer area and a flow guide groove surrounding the buffer area, the flow guide groove being in fluid communication with the backflow port; the buffer area is arranged to protrude towards the drinking water part, and liquid flowing out of the backwater hole is shunted and collected to the flow guide groove through the buffer area, and then flows into the water storage cavity through the backflow port along the flow guide groove.

[0050] Optionally, the primary filter has a receiving part, the drinking water disc is provided with a mounting hole, the lower part of the filter part is arranged on the receiving part, the upper part of the filter part passes through the mounting hole, and the clean water outlet is higher than the drinking water part.

[0051] Optionally, the height of the mounting hole from the bottom surface of the drinking water part is greater than the height of the backwater hole from the bottom surface of the drinking water part.

[0052] Optionally, the receiving part comprises a mounting groove and a through hole arranged in the mounting groove, the water inlet of the lower end cover is opposite to the through hole, the pump outlet is in communication with the inlet of the water outlet pipe, the outlet of the water outlet pipe passes through the through hole and is connected to the water inlet, and the exhaust port of the lower end cover is exposed from the through hole.

[0053] Optionally, the pump is arranged at the bottom of the water tank and comprises:

[0054] a pump housing, the pump inlet and the pump outlet being arranged on the housing, and the bottom surface of the pump housing being in contact with the bottom surface of the water tank;

[0055] an impeller comprising an impeller water inlet and an impeller water outlet, the impeller water inlet being in communication with the pump inlet, and the impeller water outlet being in communication with the pump outlet;

[0056] an impeller cover between the pump inlet and the impeller water inlet, comprising an impeller cover water inlet and an impeller cover water outlet, the impeller cover water outlet being in communication with the impeller water inlet, and the distance from the impeller cover water inlet to the bottom surface of the pump housing being less than the distance from the impeller cover water outlet to the bottom surface of the pump housing;

[0057] A water deficiency probe is connected to the pump shell, and the distance from the water deficiency probe to the bottom surface of the pump shell is greater than the distance from the upper end of the impeller cover water inlet to the bottom surface of the pump shell, wherein the upper end of the impeller cover water inlet refers to the end farthest from the bottom surface of the pump shell.

[0058] Optionally, the pump inlet is arranged on one side of the pump shell, the water deficiency probe is arranged on the other side of the pump shell opposite to the pump inlet, and the pump outlet is arranged on the top of the pump shell.

[0059] Optionally, the impeller cover water inlet is directed towards the bottom surface of the pump shell.

[0060] Optionally, the distance from the water deficiency probe to the bottom surface of the pump shell is greater than the distance from the upper end of the impeller cover water outlet to the bottom surface of the pump shell, wherein the upper end of the impeller cover water outlet refers to the end farthest from the bottom surface of the pump shell.

[0061] Optionally, the pump inlet is provided with a first filter structure.

[0062] Optionally, the pump is a wireless water pump.

[0063] Optionally, the pet water dispenser further comprises a UV lamp installed in the water storage cavity for sterilizing the liquid in the water storage cavity.

[0064] Optionally, the water bowl is made of stainless steel.

[0065] The above-mentioned scheme has the following beneficial effects:

[0066] The pet water dispenser comprises a water tank, a pump, a filter device and a water drinking part, the filter device is provided with a raw water space, a purified water space and a filter element, and the filter element is arranged between the raw water space and the purified water space. The pump transports the liquid in the water storage cavity to the raw water space when working, and under the continuous liquid injection, the liquid in the raw water space crosses the filter element to enter the purified water space, and when the purified water space is filled with liquid, the liquid flows from the purified water outlet to the water drinking part. The liquid in the raw water space is naturally driven to pass through the filter element to enter the purified water space through the continuous pumping of the liquid, the liquid flow rate is slow, the liquid can be fully contacted with the filter element, the filtering effect is improved, and therefore, healthy and clean drinking water is provided for pets. BRIEF DESCRIPTION OF DRAWINGS

[0067] Figure 1 is a structural schematic diagram of a pet water dispenser provided by an embodiment of the present application;

[0068] Figure 2 is an exploded schematic diagram of a pet water dispenser provided by an embodiment of the present application;

[0069] Figure 3is a sectional view of a pet water dispenser provided by an embodiment of the present application;

[0070] Figure 4 is a sectional view of a pet water dispenser provided by an embodiment of the present application;

[0071] Figure 5 is a structural schematic diagram of a primary filter provided by an embodiment of the present application;

[0072] Figure 6 is a sectional view of a filter provided by an embodiment of the present application;

[0073] Figure 7 is a structural schematic diagram of an upper end cover and a middle shell after assembly provided by an embodiment of the present application;

[0074] Figure 8 is a structural schematic diagram of a lower end cover provided by an embodiment of the present application;

[0075] Figure 9 is a structural schematic diagram of a lower end cover provided by an embodiment of the present application;

[0076] Figure 10 is a structural schematic diagram of a pump provided by an embodiment of the present application;

[0077] Figure 11 is a structural schematic diagram of an internal structure of a pump provided by an embodiment of the present application;

[0078] Figure 12 is a flow path of a liquid in a pump provided by an embodiment of the present application;

[0079] Figure 13 is a flow path of a liquid in a pet water dispenser provided by an embodiment of the present application;

[0080] Figure 14 is a flow path of a gas in a pet water dispenser provided by an embodiment of the present application.

[0081] in the figure:

[0082] 100 water tank, 101 water storage cavity, 102 inner shell of water tank, 103 outer shell of water tank, 104 support ring, 105 mounting table, 108 inner shell,

[0083] 200 pump, 201 pump inlet, 202 pump outlet, 203 water shortage probe, 204 pump shell, 205 impeller, 206 impeller cover, 209 water inlet of impeller cover, 210 water outlet of impeller cover, 211 first filter structure,

[0084] 300 filter device, 301 housing, 302 filter core, 303 raw water space, 304 clean water space, 305 clean water outlet, 307 buffer space, 308 first exhaust hole, 309 upper end cover, 310 lower end cover, 311 middle housing, 312 filter core body, 313 filter core end cover, 314 second exhaust hole, 315 filter core water outlet, 316 first connecting pipe, 317 ring body, 319 water inlet, 320 exhaust port, 321 water outlet column, 322 exhaust column, 323 positioning column, 324 first positioning hole, 325 second positioning hole, 326 positioning part, 327 gap, 328 flow guide surface, 329 sealing element, 330 filter core water inlet,

[0085] 400 drinking water tray, 401 drinking water part, 402 backflow hole, 403 mounting hole,

[0086] 500 primary filter, 501 mounting groove, 502 through hole, 503 filter part, 504 buffer area, 505 backflow port, 506 flow guide groove, 507 receiving part,

[0087] 600 electrical device,

[0088] 700 water outlet pipe. DETAILED DESCRIPTION

[0089] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0090] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative work fall within the scope of protection of the present application.

[0091] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0092] In the description of the application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings or the orientation or positional relationship commonly placed when the product of the application is used, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance. In the description of the application, unless otherwise specified and limited, the meaning of "a plurality of" is two or more.

[0093] In the description of the application, it should be noted that, unless otherwise specified and limited, the terms "set", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0094] In the present application, unless otherwise specified and limited, "on" or "under" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "above" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. "Below", "below" and "below" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0095] The embodiments of the application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the application, and cannot be understood as a limitation on the application.

[0096] The embodiment provides a pet water dispenser, which comprises at least a water tank 100, a pump 200, a filter device 300 and a water drinking part 401; wherein the water tank 100 has a water storage cavity 101; the pump 200 comprises a pump inlet 201 and a pump outlet 202, the pump inlet 201 communicates with the water storage cavity 101, and the pump 200 is used for sending the liquid in the water storage cavity 101 from the pump inlet 201 to the pump outlet 202; the filter device 300 comprises a shell 301, a filter core 302, raw water space 303 and clean water space 304 in the shell 301, the filter core 302 is between the raw water space 303 and the clean water space 304, and the raw water space 303 communicates with the pump outlet 202; the water drinking part 401 communicates with the clean water space 304 and is used for containing liquid for drinking. When the pump 200 works, the pump 200 sends the liquid in the water storage cavity 101 to the raw water space 303, the liquid in the raw water space 303 passes through the filter core 302 to enter the clean water space 304, and the liquid in the clean water space 304 is sent to the water drinking part 401. The liquid in the raw water space 303 is driven by the continuously pumped liquid to pass through the filter core 302 to enter the clean water space 304, so that the liquid can be fully filtered, and healthy and clean drinking water can be provided for pets.

[0097] Specifically, the raw water space 303 is arranged outside the clean water space 304, and when the pump 200 works, the liquid in the raw water space 303 passes through the filter core 302 to enter the clean water space 304 laterally. The raw water space is designed to surround the clean water space, so that the liquid passes through the filter core to enter the clean water space laterally, the liquid can be ensured to fully contact the filter core, the filtering effect is improved, and cleaner drinking water can be obtained.

[0098] In a possible implementation, a second exhaust hole 314 is arranged on the shell 301, the second exhaust hole 314 communicates the raw water space 303 with the water storage cavity 101, and when the liquid enters the raw water space 303, the gas in the raw water space 303 can enter the water storage cavity 101 through the second exhaust hole 314. Specifically, the second exhaust hole 314 is flush with the highest liquid storage surface of the raw water space 303; when the liquid level in the raw water space 303 exceeds the highest liquid storage surface of the raw water space 303, the liquid in the raw water space 303 can be discharged into the water storage cavity 101 through the second exhaust hole 314. Specifically, the shell 301 comprises a lower end cover and an exhaust column 322 protruding on the lower end cover, the exhaust column 322 is vertically arranged in the raw water space 303, the upper end of the exhaust column 322 is open to form the second exhaust hole 314, and the lower end of the exhaust column 322 is provided with an exhaust port 320, the exhaust port 320 penetrates the upper surface and the lower surface of the lower end cover.

[0099] When the pump 200 is working, at least part of the gas in the raw water space 303 can be discharged into the water storage cavity 101 through the second gas discharge hole 314, which is arranged near the upper part of the shell 301, so that the rising gas can be quickly discharged, and the gas in the raw water space 303 can be quickly discharged, so that the liquid can quickly fill the raw water space 303, and the waiting time required from the start of the pump 200 to the water outlet of the clean water outlet 305 is shortened.

[0100] The pet water dispenser further comprises a clean water outlet 305 and a first gas discharge hole 308. The clean water outlet 305 is located above the raw water space 303, and the clean water outlet 305 communicates with the clean water space 304. The first gas discharge hole 308 communicates with the raw water space 303, and the raw water space 303 communicates with the atmosphere outside the body of the pet water dispenser through the first gas discharge hole 308, and the first gas discharge hole 308 is higher than the highest liquid level of the raw water space 303. The gas in the clean water space 304 is discharged from the pet water dispenser through the clean water outlet 305, and the liquid in the clean water space 304 is output to the drinking water part 401 through the clean water outlet 305.

[0101] The pet water dispenser further comprises a buffer space 307. The buffer space 307 is located above the clean water space 304. The buffer space 307 communicates with the clean water space 304 and the clean water outlet 305, and the buffer space 307 is used to buffer the liquid flowing out of the clean water space 304, so as to avoid the liquid being directly sprayed out of the clean water outlet 305; the liquid in the clean water space 304 first flows into the buffer space 307, and then flows from the buffer space 307 to the clean water outlet 305. Specifically, the normal projection of the buffer space 307 and the clean water space 304 on the plane where the bottom surface of the filter device 300 is located corresponds to the second projection and the first projection, and the second projection is smaller than the first projection.

[0102] In the design structure, the first gas discharge hole 308 communicates with the buffer space 307, and the first gas discharge hole 308 communicates the raw water space 303 with the clean water outlet 305; when the raw water space 303 inputs liquid, the gas in the raw water space 303 is discharged from the clean water outlet 305 through the first gas discharge hole 308 and the buffer space 307.

[0103] In a possible implementation, the shell 301 is internally provided with the raw water space 303, the purified water space 304 and the filter core 302, the shell 301 includes an upper end cover 309 at the top and the lower end cover 310 at the bottom, the purified water outlet 305 is arranged on the upper end cover 309, and a connecting pipe 316 is arranged on the upper end cover 309 around the purified water outlet 305, and the connecting pipe 316 is internally provided with the buffer space 307. The first exhaust hole 308 is arranged on the connecting pipe 316. The buffer space 307 is jointly formed by the connecting pipe 316 and the filter core end cover 313.

[0104] In a possible implementation, the shell 301 is provided with a filter core water outlet 315, the purified water space 304 and the buffer space 307 are communicated through the filter core water outlet 315, and the filter core water outlet 315 is arranged staggered with the purified water outlet 305. Specifically, the filter core 302 includes a filter core body 312 and a filter core end cover 313 connected to the upper portion of the filter core body 312, the lower end of the filter core body 312 is arranged on the lower end cover 310, and the filter core end cover 313 is connected with the connecting pipe 316. The filter core 302 is internally provided with the purified water space 304, the filter core end cover 313 is provided with the filter core water outlet 315 which communicates the purified water space 304 and the buffer space 307, and the water outlet direction of the filter core water outlet 315 deviates from the purified water outlet 305. The filter core water outlet 315 is arranged staggered with the purified water outlet 305, so as to avoid that the water from the filter core water outlet is directly sprayed from the purified water outlet, slow down the water flow rate of the water from the purified water outlet, and create the effect of natural water flow.

[0105] In a possible implementation, please refer to Figure 1 and Figure 2The pet water dispenser comprises a water tank 100, a pump 200, a filter device 300, a water tray 400 and a primary filter 500. The water tank 100 has a water storage cavity 101 inside. The primary filter 500 is arranged on the upper portion of the water tank 100 and adjacent to the upper opening of the water tank 100. The water tray 400 is arranged on the upper opening of the water tank 100 and above the primary filter 500. The lower portion of the filter device 300 is arranged on the primary filter 500, and the upper portion of the filter device 300 passes through the water tray 400. The water tray 400 has a water drinking portion 401 and a water return hole 402. The water outlet 305 on the top of the filter device 300 is higher than the water drinking portion 401. The liquid flowing out of the water outlet 305 can flow into the water drinking portion 401 from top to bottom. The water drinking portion 401 has a certain liquid storage capacity. When the liquid level in the water drinking portion 401 is higher than the water return hole 402, the excess liquid can flow into the water storage cavity 101 through the water return hole 402 and the primary filter 500. The pump 200 is arranged in the water storage cavity 101, and the pump outlet 202 is communicated with the filter device 300. When the pump 200 works, the liquid in the water storage cavity 101 is pumped to the filter device 300. The filtered liquid flows into the water drinking portion 401 from the water outlet 305 for the pet to drink. When the liquid level in the water drinking portion 401 is higher than the water return hole 402, the excess liquid flows back to the water storage cavity 101 through the water return hole 402, forming a liquid circulation, so as to ensure that the liquid in the water drinking portion 401 is filtered and provide healthy and clean drinking water for the pet.

[0106] Please refer to Figure 4 The water tank 100 can comprise a water tank shell 103, a water tank inner shell 102 and an electrical device 600. The water tank inner shell 102 is partially accommodated in the water tank shell 103. The bottom of the water tank inner shell 102 and the bottom of the water tank shell 103 form a mounting space. The electrical device 600 is arranged in the mounting space. The electrical device comprises but is not limited to a power board, a key board and a wire. The power board is electrically connected with the key board through the wire. The key board is connected with the operation key arranged on the water tank shell 103. The power board is powered through the external power line. Specifically, the water tank inner shell 102 comprises an inner shell body 108 and a support ring 104. The support ring 104 is connected with the upper opening of the inner shell body 108 and coaxially arranged with the upper opening of the inner shell body 108. The support ring 104 and the inner shell body 108 form a mounting table 105. The water tank inner shell 102 is supported at the upper opening of the water tank shell 103 through the lower edge of the mounting table 105. The inner shell body 108 is accommodated in the water tank shell 103. The support ring 104 is higher than the upper opening of the water tank shell 103.

[0107] Please refer to Figure 1The water bowl 400 is arranged on the upper end of the support ring 104 of the water tank inner shell 102. The water bowl 400 can be made of plastic or stainless steel, and has the characteristics of being resistant to falling and biting, and not easy to deform. At least part of the water bowl 400 constitutes a water drinking part 401. Specifically, the water bowl 400 has a concave water holding part and a backflow hole 402 arranged beside the water holding part. The water holding part constitutes the water drinking part 401, and the backflow hole 402 is connected to the water storage cavity 101. Liquid exceeding the highest liquid level of the water drinking part 401 can flow back to the water storage cavity 101 through the backflow hole 402. Optionally, the backflow hole 402 can be a strip-shaped opening partially surrounding the water holding part, or one or more holes surrounding the water holding part. The highest liquid level of the water drinking part 401 is determined by the backflow hole 402 arranged beside the water drinking part 401. Specifically, the highest liquid level of the water drinking part 401 is flush with the point closest to the water drinking part 401 above the backflow hole 402. Once the liquid level in the water drinking part 401 exceeds this point, the liquid will flow out of the backflow hole 402. Optionally, in order to ensure the stability of the water in the water drinking part 401, so that the pet can drink the drinking water in the water drinking part 401 smoothly, the depth of the water drinking part 401 is designed to be not less than 20 mm, wherein the depth refers to the vertical distance between the backflow hole 402 and the bottom surface of the water drinking part 401.

[0108] Further, the water bowl 400 is also provided with a mounting hole 403, and the filter device 300 can pass through the mounting hole 403, so as to guide the filtered liquid from the water outlet 305 at the top of the filter device 300 to the water drinking part 401. Specifically, the height of the mounting hole 403 from the bottom surface of the water drinking part 401 is greater than the height of the backflow hole 402 from the bottom surface of the water drinking part 401, i.e. the mounting hole 403 is arranged to be higher than the backflow hole 402. In this way, the excess liquid in the water drinking part 401 flows out of the backflow hole 402 and does not flow out of the mounting hole 403, avoiding the liquid in the water drinking part 401 flowing into the water storage cavity 101 without being filtered by the primary filter 500.

[0109] The primary filter 500 is arranged at the upper end opening of the inner shell 108 of the water tank inner shell 102, and the edge of the primary filter 500 is in contact with the upper edge of the mounting table 105. Please refer to Figure 5The primary filter 500 includes a filtering portion 503 below the water drinking portion 401, for filtering the liquid flowing back from the water drinking portion 401 to the water storage cavity 101. The filtering portion 503 includes a backflow opening 505, and a second filtering structure is arranged at the backflow opening 505. The second filtering structure can be a filter screen. Although the liquid delivered to the water drinking portion is filtered, hair, food residues and other impurities can be brought in during the pet drinking process. Therefore, the primary filter is arranged to filter the liquid before it is delivered back to the water storage cavity, so as to intercept the hair and large-particle impurities in the liquid through the second filtering structure, to ensure that the liquid in the water storage cavity is free of large-particle impurities, and to avoid the clogging of the later-stage filter. Optionally, the filtering portion 503 further includes a buffer area 504 and a flow guide groove 506 surrounding the buffer area 504, and the flow guide groove 506 is in fluid communication with the backflow opening 505. The buffer area 504 is arranged to protrude towards the water drinking portion 401, and the liquid flowing out of the water outlet hole 402 is collected in the flow guide groove 506 through the buffer area 504, and then flows into the water storage cavity 101 through the backflow opening 505. This design reduces the flow rate of the liquid through the buffer area 504. Since the filtering portion 503 has a higher interception effect on impurities at a low flow rate, the filtering effect can be improved, and the sound of flowing water is also reduced when the liquid enters the water storage cavity 101 through the backflow opening 505. In addition, the buffer area enables the liquid to be collected in the flow guide groove and then enter the water storage cavity through the backflow opening, so as to avoid the accumulation of liquid on the primary filter.

[0110] Further, the primary filter 500 further includes a receiving portion 507 arranged side by side with the filtering portion 503, and the receiving portion 507 is below the filter device 300, for supporting the filter device 300. The receiving portion 507 includes a mounting groove 501 and a through hole 502 arranged in the mounting groove 501, and the lower portion of the filter device 300 is accommodated in the mounting groove 501. The pump outlet 202 of the pump 200 is in communication with the inlet of the water outlet pipe 700, and the water inlet 319 of the filter device 300 is in communication with the water outlet pipe 700 at the through hole 502. In this way, the liquid pumped from the pump inlet 201 to the pump outlet 202 can enter the filter device 300 through the water outlet pipe 700 to complete the filtering.

[0111] The pump 200 is arranged at the bottom of the water tank 100, and the pump 200 is provided with a water shortage probe 203. The water shortage probe 203 is located at a position of the pump 200 away from the bottom of the water tank 100, and the pump 200 stops working when the water shortage probe 203 is higher than the liquid level in the water storage cavity 101. In the related art, the water shortage probe is usually designed to be close to the bottom surface of the pump to pump as much liquid as possible. However, the inventors have found that in the process of pumping liquid from bottom to top by the pump, although the design of the water shortage probe close to the bottom surface of the pump can make the pump pump more liquid, the liquid pumped from the pump inlet to the pump outlet will flow out of the pump outlet due to insufficient water pressure, and the pet water dispenser will not have water although the pump is working. Based on this, the structure of the pump is improved and designed in this embodiment to ensure that the liquid pumped by the pump enters the filter device and does not directly flow out of the pump outlet.

[0112] Please refer to Figure 10 and Figure 11 , the pump 200 comprises a pump shell 204, an impeller 205, an impeller cover 206 and a water shortage probe 203: the pump inlet 201 and the pump outlet 202 are arranged on the pump shell 204, and the bottom surface of the pump shell 204 is in contact with the bottom surface of the water tank 100; the impeller 205 comprises an impeller water inlet and an impeller water outlet, the impeller water inlet is communicated with the pump inlet 201, and the impeller water outlet is communicated with the pump outlet 202; the impeller cover 206 is located between the pump inlet 201 and the impeller water inlet, and comprises an impeller cover water inlet 209 and an impeller cover water outlet 210, the impeller cover water outlet 210 is communicated with the impeller water inlet, and the distance from the impeller cover water inlet 209 to the bottom surface of the pump shell 204 is less than the distance from the impeller cover water outlet 210 to the bottom surface of the pump shell 204; the water shortage probe 203 is connected to the pump shell 204, and the distance from the water shortage probe 203 to the bottom surface of the pump shell 204 is greater than the distance from the upper end of the impeller cover water inlet 209 to the bottom surface of the pump shell 204, wherein the upper end of the impeller cover water inlet 209 refers to the end farthest from the bottom surface of the pump shell 204, that is, the height of the water shortage probe 203 relative to the bottom surface of the pump shell 204 is greater than the height of the impeller cover water inlet 209 relative to the bottom surface of the pump shell 204. In this embodiment, the impeller cover is arranged between the pump inlet and the impeller water inlet to reduce the height of the impeller water inlet, so that when the liquid level does not completely submerge the impeller water inlet but submerges the impeller cover water inlet, the pump can still successfully pump the liquid to the filter device, avoiding too much liquid remaining in the water storage cavity. Further, by setting the distances of the water shortage probe and the impeller cover water inlet relative to the bottom surface of the water tank, the liquid in the water storage cavity can be pumped to the filter device, and when the liquid in the water storage cavity is reduced to be unable to be successfully pumped to the filter device, the water shortage probe triggers a detection signal to stop the pump from working, avoiding invalid working of the pump.

[0113] In implementation, the impeller cover inlet 209 of the impeller cover 206 faces the bottom surface of the pump shell 204. In this way, the highest point and the lowest point of the impeller cover are consistent, the impeller cover inlet is consistent with the liquid level, and the impeller cover inlet can be fully immersed in the liquid to avoid the impeller cover inlet from sucking in air to reduce the pumping effect.

[0114] Further, the distance from the water shortage probe 203 to the bottom surface of the pump shell 204 is greater than the distance from the upper end of the impeller cover outlet 210 to the bottom surface of the pump shell 204, where the upper end of the impeller cover outlet 210 refers to the end of the impeller cover outlet 210 that is farthest from the bottom surface of the pump shell 204, i.e., the height of the water shortage probe 203 relative to the bottom surface of the pump shell 204 is greater than the height of the impeller cover outlet 210 relative to the bottom surface of the pump shell 204. In this way, the impeller cover inlet and outlet pressures are consistent, which is conducive to pumping the liquid in the storage cavity to the filter device.

[0115] In implementation, the bottom surface of the water tank 100 is provided with a mounting groove 501, and the pump 200 is accommodated in the mounting groove 501. The pump inlet 201 is arranged on one side of the pump shell 204, the water shortage probe 203 is arranged on the other side of the pump shell 204 opposite the pump inlet 201, the pump outlet 202 is arranged at the top of the pump shell 204, and the bottom surface of the pump shell 204 is accommodated in the mounting groove 501. The provision of the mounting groove 501 facilitates the installation and positioning of the pump 200 at the bottom of the water tank 100. Arranging the water shortage probe 203 on the side of the pump shell 204 opposite the pump inlet 201 can avoid the influence of liquid level fluctuations at the pump inlet 201 on detection, making the detection result of the water shortage probe 203 more accurate.

[0116] Further, the pump inlet 201 is provided with a first filter structure 211, where the first filter structure 211 can be a grid-shaped structure arranged at the pump inlet 201. In implementation, a grid-shaped structure can be arranged on the side of the pump shell 204 opposite the impeller inlet, so that the pump inlet 201 is combined with the first filter structure 211. The first filter structure 211 is used to block larger impurities such as hair and large particles in the liquid from entering the pump 200, further avoiding the flow of these impurities into the raw water space 303 to weaken the filtering effect of the filter element 302.

[0117] Figure 12 The flow path of the liquid in the pump 200 is shown. Please refer to Figure 12When the liquid level in the water storage cavity 101 is not lower than the water shortage probe 203, the impeller 205 rotates to generate negative pressure inside the pump shell 204, and the liquid in the water storage cavity 101 reaches the vicinity of the impeller cover 206 via the first filter structure 211 of the pump inlet 201, and then enters the inside of the impeller cover 206 via the impeller cover water inlet 209, and the liquid in the impeller cover 206 enters the impeller 205 via the impeller cover water outlet 210 and the impeller water inlet, and the liquid in the impeller 205 is discharged from the pump outlet 202 via the impeller water outlet. When the liquid level in the water storage cavity 101 is lower than the water shortage probe 203, the water shortage probe 203 generates a water shortage signal, and the pump 200 stops working in response to the water shortage signal, and can also perform water shortage reminding, which includes but is not limited to displaying sound and light signals, such as voice reminding or light reminding, to remind the user to supplement water to the water storage cavity 101, and the pump 200 continues to work when the water shortage probe 203 detects that the water storage cavity 101 is not short of water.

[0118] In this embodiment, the pump 200 can be a wired water pump or a wireless water pump. Compared with the wired water pump, the wireless water pump is smaller in size and lower in operation noise, and thus is more suitable than the wired water pump in the case of high silence requirement or limited installation space.

[0119] Further, the pet water dispenser can further include a UV lamp which is not shown in the figure. The UV lamp is installed in the water storage cavity 101, for example, can be arranged on the pump 200 or the water outlet pipe 700, and the UV lamp can be powered and worked from the inside of the pump 200. The UV lamp irradiates the water outlet pipe 700, and can sterilize the liquid passing through the pipe, so as to ensure that the liquid flowing into the filter device 300 is sterilized by the UV lamp. The sterilization of the liquid by the UV lamp can make the liquid store for a longer time and not easy to breed bacteria.

[0120] In the initial stage of working of the pump 200 of the pet water dispenser, the filter device 300 is full of gas, and the pump 200 pumps the liquid in the water storage cavity 101 to the filter device 300. After the gas in the clean water space 304 is completely discharged, the clean water outlet 305 can normally discharge water. If the liquid in the filter device 300 cannot be smoothly discharged, the clean water outlet 305 will not discharge water or the water flow will be small when the water dispenser is started. In this embodiment, the filter device 300 is designed to discharge gas, so that the gas can be quickly discharged when the machine is started, and the water discharge is smooth. For details, see Figure 3 and Figure 6The filter device 300 comprises a housing 301 and a filter core 302 located in the housing 301. The housing 301 is provided with a raw water space 303 and a purified water space 304. The filter core 302 is located between the raw water space 303 and the purified water space 304. The housing 301 is provided with a first air outlet 308 and a purified water outlet 305. The first air outlet 308 is connected to the raw water space 303 and the purified water space 304. The first air outlet 308 is higher than the highest liquid level of the raw water space 303. The purified water outlet 305 is connected to the purified water space 304. When the pump 200 works, the liquid in the water storage cavity 101 enters the raw water space 303. The gas in the raw water space 303 at least partially enters the purified water space 304 through the first air outlet 308. The liquid in the raw water space 303 enters the purified water space 304 through the filter core 302. The gas in the purified water space 304 is discharged from the pet water dispenser through the purified water outlet 305. The liquid in the purified water space 304 is output to the water drinking part 401 through the purified water outlet 305. In this design, the discharge path of the gas in the filter device 300 is consistent with the flow path of the liquid in the filter device 300. The gas in the filter device 300 can be quickly discharged under the continuous injection of the liquid, ensuring smooth water outlet when the pet water dispenser starts. Further, the housing 301 is provided with a second air outlet 314 connected to the raw water space 303 and the water storage cavity 101. When the pump 200 works, at least part of the gas in the raw water space 303 can be discharged into the water storage cavity 101 through the second air outlet 314. In this way, part of the gas in the raw water space 303 enters the purified water space 304 through the first air outlet 308, and the other part enters the water storage cavity 101 through the second air outlet 314. In addition, the first air outlet 308 and the second air outlet 314 are arranged near the upper part of the housing 301, which is beneficial to the rapid discharge of the rising gas and the smooth discharge of the gas, so as to quickly discharge the gas in the raw water space 303, make the liquid quickly fill the raw water space 303, and shorten the waiting time required from the start of the pump 200 to the water outlet of the purified water outlet 305. As the water in the raw water space enters the purified water space through the filter core, the water level in the purified water space rises to the buffer space. At this time, the water level in the buffer space is higher than the first air outlet 308, which will make the first air outlet unable to discharge the gas. However, since most of the gas in the machine body has been discharged, the gas in the machine body is much less than when the machine is just started. Therefore, the second air outlet 314 can completely meet the demand and will not affect the water outlet speed.

[0121] Figure 6 A structure of the filter device 300 is shown. Please refer to Figure 6The raw water space 303 is arranged outside the purified water space 304 and communicates with the pump outlet 202, the filter core 302 is arranged between the raw water space 303 and the purified water space 304, the purified water space 304 communicates with the buffer space 307 through the filter core water outlet 315, the buffer space 307 communicates with the purified water outlet 305, and the filter core water outlet 315 is staggered with the purified water outlet 305. When the pump 200 works, the liquid in the water storage cavity 101 is delivered from bottom to top to the raw water space 303, the gas in the raw water space 303 is discharged through the first exhaust hole 308 and the second exhaust hole 314, the liquid in the raw water space 303 passes through the filter core 302 horizontally to enter the purified water space 304, the gas in the purified water space 304 enters the buffer space 307 through the filter core water outlet 315, the gas in the buffer space 307 is discharged through the purified water outlet 305, the liquid in the purified water space 304 enters the buffer space 307 from bottom to top through the filter core water outlet 315, and the liquid in the buffer space 307 is delivered to the drinking water part 401 through the purified water outlet 305. The filter core 302 is a polypropylene activated carbon filter core, and the hydrogen ion exchange resin member and the potassium ion exchange resin member are arranged in the raw water space 303. The filter core 302 is a polypropylene activated carbon filter core, which can filter large-particle impurities, the hydrogen ion exchange resin member and the potassium ion exchange resin member are arranged in the raw water space 303 to form weakly acidic soft water, the polypropylene activated carbon filter core can add trace elements required by pets, enhance the taste and help the health of pets. Further, a descaling filter element can be arranged in the raw water space 303 to remove calcium and magnesium ions in the liquid in the raw water space 303. Optionally, the descaling filter element can be directly arranged in the raw water space 303 for convenient replacement. In the embodiment, since the liquid from the water storage cavity 101 flows in the filter element 300 by horizontal flow and from bottom to top, the liquid flow rate is slowed down, so that the liquid can fully contact the filter core 302 and other filter materials to achieve better filtering effect. In addition, by staggering the filter core water outlet 315 and the purified water outlet 305, the liquid overflowing from the filter core water outlet 315 is buffered at the top of the shell 301 during the liquid flowing from bottom to top, and then naturally overflows from the purified water outlet 305, avoiding the liquid from spouting from the purified water outlet 305.

[0122] Please refer to Figures 6-9The shell 301 comprises an upper end cover 309 at the top and a lower end cover 310 at the bottom, the purified water outlet 305 is arranged on the upper end cover 309, and a connecting pipe 316 is arranged around the purified water outlet 305 on the upper end cover 309; the filter element 302 comprises a filter element body 312 and a filter element end cover 313 connected to the upper portion of the filter element body 312, the lower end of the filter element body 312 is arranged on the lower end cover 310, the filter element end cover 313 is connected to the connecting pipe 316, the inside of the filter element 302 is the purified water space 304, the inside of the connecting pipe 316 is the buffer space 307, the filter element end cover 313 is provided with a filter element water outlet 315 which communicates the purified water space 304 and the buffer space 307, and the water outlet direction of the filter element water outlet 315 deviates from the purified water outlet 305. Optionally, the filter element end cover 313 is provided with a ring body 317 around the filter element water outlet 315, the ring body 317 is sealed and matched with the connecting pipe 316 by a sealing element 329 to form the buffer space 307, wherein the sealing element 329 is a sealing ring arranged between the ring body 317 and the connecting pipe 316. Further, the shell 301 further comprises a middle shell 311 connecting the upper end cover 309 and the lower end cover 310, optionally, the upper portion of the middle shell 311 can be integrated with the upper end cover 309, and the lower portion of the middle shell 311 can be integrated with the lower end cover 310, so as to reduce assembly parts and improve assembly efficiency.

[0123] Specifically, the upper portion of the shell 301 is provided with a first air vent 308, the first air vent 308 communicates the raw water space 303 and the buffer space 307, and the first air vent 308 is higher than the highest liquid level of the raw water space 303. At the initial stage of the pump 200, at least part of the air in the raw water space 303 can enter the buffer space 307 through the first air vent 308 and be discharged from the purified water outlet 305. In specific implementation, a communication part can be arranged on the connecting pipe 316, after the connecting pipe 316 is tightly combined with the ring body 317, the part of the communication part which communicates the buffer space 307 and the raw water space 303 constitutes the first air vent 308. The communication part can be a hole or a notch arranged on the connecting pipe 316, for example, as shown in the figure, the communication part is a notch arranged on the connecting pipe 316. Figure 7 Further, since the first air vent 308 is higher than the highest liquid level of the raw water space 303, when the purified water space 304 is full of liquid, the liquid can enter the raw water space 303 from the first air vent 308, in order to take into account the air exhaust function of the first air vent 308 and reduce the liquid flowing back to the raw water space 303 through the first air vent 308, the opening area of the first air vent 308 in the embodiment is 10mm 2 ~14mm 2 .

[0124] The lower end cover 310 is provided with a water inlet 319, an exhaust port 320, a water outlet column 321 and an exhaust column 322. The water inlet 319 and the exhaust port 320 penetrate the upper surface and the lower surface of the lower end cover 310. The water outlet column 321 and the exhaust column 322 are vertically arranged in the raw water space 303. The lower end of the water outlet column 321 is open and communicates with the water inlet 319. The upper end of the water outlet column 321 is open and forms a filter core water inlet 330. The lower end of the exhaust column 322 communicates with the exhaust port 320. The upper end of the exhaust column 322 is open and forms a second exhaust hole 314. The second exhaust hole 314 is higher than the filter core water inlet 330. The second exhaust hole 314 is flush with the highest liquid level of the raw water space 303. When the pump 200 is working, at least part of the air in the raw water space 303 can enter the water storage cavity 101 through the second exhaust hole 314. When the liquid level in the raw water space 303 exceeds the highest liquid level of the raw water space 303, the liquid in the raw water space 303 can be discharged into the water storage cavity 101 through the second exhaust hole 314. The upper end faces of the water outlet column 321, the exhaust column 322 and the positioning column 323 are all higher than the filter core end cover 313. In this way, the highest liquid level of the raw water space 303 is higher than the upper cover of the filter core 302. The filter core 302 is entirely soaked in the liquid, which increases the effective contact area of the filter core 302 with the liquid, thereby facilitating the improvement of the filtering effect of the filter core 302.

[0125] The lower end cover 310 is further provided with a positioning column 323. The positioning column 323 is located in the raw water space 303. The edge of the filter core end cover 313 is provided with a first positioning hole 324 and a second positioning hole 325. The lower end of the positioning column 323 is connected to the lower end cover 310. The upper end of the positioning column 323 passes through the first positioning hole 324 and cooperates with a positioning portion 326 of the upper end cover 309. The exhaust column 322 passes through the second positioning hole 325. The second exhaust hole 314 of the exhaust column 322 and the upper end cover 309 have a gap 327. The gas and the liquid in the raw water space 303 can enter the exhaust column 322 through the gap 327. When the liquid level in the raw water space 303 is higher than the second exhaust hole 314, the liquid will be discharged from the second exhaust hole 314. Thus, the second exhaust hole 314 defines the highest liquid level of the raw water space 303. Optionally, the first positioning hole 324 and the second positioning hole 325 are different in size and / or shape. The size and the shape of the first positioning hole and the second positioning hole are designed to be different, which facilitates quick alignment during assembly of the filter device, improves the assembly efficiency and reduces the error rate.

[0126] Further, the lower part of the filter device 300 is accommodated in the mounting groove 501 of the primary filter device 500, the water inlet 319 of the lower end cover 310 is opposite to the through hole 502 in the mounting groove 501, the air outlet 320 of the lower end cover 310 is exposed from the through hole 502, and the air outlet 320 is configured to face the water inlet 319. The inlet of the water outlet pipe 700 is fixedly connected with the pump outlet 202, and the outlet of the water outlet pipe 700 enters the through hole 502 in the mounting groove 501 and is in clearance fit with the water inlet 319. When the liquid level in the raw water space 303 exceeds the highest liquid storage surface of the raw water space 303, the liquid in the raw water space 303 can reach the air outlet 320 through the second air vent hole 314 and flow back to the water storage cavity 101 along the water outlet pipe 700. In a specific implementation, in order to ensure that the liquid flowing out of the air outlet 320 can flow along the water outlet pipe 700, the opening area of the air outlet 320 is set to 2mm 2 -5mm 2 , so that a water column is formed when the liquid flows out of the air outlet 320 and sprays towards the water outlet pipe 700. The liquid in the filter device 300 flows back to the water storage cavity 101 along the water outlet pipe 700, which is beneficial to reducing water flow noise.

[0127] The top of the upper end cover 309 has a flow guide surface 328 extending from the clean water outlet 305 to the drinking water part 401, and the flow guide surface 328 is used to guide the liquid overflowing from the clean water outlet 305 to converge towards the drinking water part 401. The flow guide surface 328 is configured as a recess extending from the vicinity of the clean water outlet 305 to at least part of the edge of the upper end cover 309, and the recess structure has a certain water storage volume. The liquid flowing out of the clean water outlet 305 flows slowly after being buffered by the recess structure, and a water flow effect of slowly flowing from top to bottom can be formed, which attracts pets to drink water while the water flow sound is small.

[0128] The drinking water disc 400, the filter device 300, the primary filter device 500 and the pump 200 of the pet water dispenser of the embodiment can be detached from the water tank 100, which facilitates cleaning of the inside of the water tank 100. In addition, the upper cover part and the lower cover part of the filter device 300 can be separated, which facilitates adding or reducing filter materials, such as descaling filter elements, to the raw water space 303.

[0129] The liquid flow path of the pet water dispenser provided in the embodiment is as shown in Figure 13 , please refer to Figure 13, the liquid in the water storage cavity 101 is stored, the operation control button makes the pump 200 work, the liquid in the water storage cavity 101 passes through the pump 200, the water outlet pipe 700 and the water outlet column 321 into the raw water space 303 in turn, the liquid in the raw water space 303 passes through the filter core 302 into the clean water space 304 in the filter core 302, when the liquid in the clean water space 304 is full, it continues to pass through the filter outlet 315 into the buffer space 307, when the liquid in the buffer space 307 is full, it flows out from the clean water outlet 305, flows along the guide surface 328 on the top of the upper end cover 309 to the drinking water part 401 of the water tray 400, when the liquid level of the drinking water part 401 is higher than the backwater hole 402, the excess liquid will flow down to the filter part of the primary filter 500 along the backwater hole 402, the liquid in the filter part first contacts the buffer area 504, reduces the potential energy, and then flows along the guide groove 506 to the backflow port 505, and then flows into the water storage cavity 101 after being filtered by the filter screen of the backflow port 505. At the same time, when the liquid level in the raw water space 303 is higher than the upper end surface of the exhaust column 322, i.e. the second exhaust hole 314, the liquid will enter the exhaust column 322 and flow along the exhaust column 322 to the exhaust port 320. Because the exhaust port 320 has a small diameter and is easy to form a water column, and the exhaust port 320 is close to the water outlet pipe 700, the liquid flowing out of the exhaust port 320 will slowly flow down along the water outlet pipe 700 into the water storage cavity 101, which helps to reduce the noise of the water flow. And in the process of circulating along the path shown in the figure, the liquid is filtered by the second filter structure of the primary filter screen, the first filter structure 211 of the pump inlet 201 and the filter core 302 of the filter device 300, ensuring that the liquid delivered to the drinking water part 401 is clean drinking water after multiple filtering processes. Figure 13

[0130] Please refer to Figure 14 ​When the filter device 300 does not store liquid, there is gas in the raw water space 303 and the clean water space 304. When the pump 200 works, liquid is pumped from the water storage cavity 101 to the raw water space 303 outside the filter core 302. Part of the gas in the raw water space 303 is discharged into the clean water space 304 through the first gas discharge hole 308, and the other part enters the gas discharge column 322 and enters the water storage cavity 101 through the gas discharge port 320. The gas in the raw water space 303 is quickly discharged through the multi-path gas discharge, so that the liquid quickly fills the raw water space 303, and then enters the clean water space 304 after being filtered by the filter core 302. The gas in the clean water space 304 is discharged upward through the filter core water outlet 315 and enters the buffer space 307. The gas in the buffer space 307 is discharged upward through the clean water outlet 305. The gas discharge path in the clean water space 304 is consistent with the liquid flow path, and the gas discharge path is from bottom to top, which is consistent with the characteristics of the upward movement of the gas. Therefore, the gas in the clean water space 304 can be quickly discharged, so that the liquid can quickly fill the clean water space 304, and then the clean water outlet 305 can smoothly discharge water, avoiding the situation that no water or small water flow occurs in the initial stage of the pump 200 working.

[0131] It should be noted that the above are only the preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A pet water fountain, characterized by, The utility model relates to a water purifying device, comprising: a water tank (100) having a water storage cavity (101); a pump (200) comprising a pump inlet (201) and a pump outlet (202), the pump inlet (201) being in communication with the water storage cavity (101), the pump (200) being used to send liquid in the water storage cavity (101) from the pump inlet (201) to the pump outlet (202); a filter device (300) comprising a housing (301) and a filter element (302), a raw water space (303) and a purified water space (304) located in the housing (301), the filter element (302) being between the raw water space (303) and the purified water space (304), the raw water space (303) being in communication with the pump outlet (202); a drinking water part (401) in communication with the purified water space (304) and used to hold liquid for drinking, the drinking water part (401) being higher than the pump inlet (201); wherein, when the pump (200) is working, the pump (200) sends liquid in the water storage cavity (101) to the raw water space (303), the liquid in the raw water space (303) passes through the filter element (302) to enter the purified water space (304), and the liquid in the purified water space (304) is sent to the drinking water part (401); a second air vent (314) is arranged on the housing (301), the second air vent (314) being in communication with the raw water space (303) and the water storage cavity (101), and at least part of the gas in the raw water space (303) can enter the water storage cavity (101) through the second air vent (314) when liquid enters the raw water space (303); the second air vent (314) is flush with the highest liquid storage surface of the raw water space (303), and the liquid in the raw water space (303) can be discharged into the water storage cavity (101) through the second air vent (314) when the liquid level of the liquid in the raw water space (303) exceeds the highest liquid storage surface of the raw water space (303); the housing (301) comprises a lower end cover (310) and an air exhaust column (322) protruding from the lower end cover (310), the air exhaust column (322) is vertically arranged in the raw water space (303), the upper end of the air exhaust column (322) is open to form the second air vent (314), and the lower end of the air exhaust column (322) is provided with an air exhaust port (320), the air exhaust port (320) penetrating through the upper surface and the lower surface of the lower end cover (310).

2. The pet water fountain of claim 1, wherein The raw water space (303) is arranged outside the purified water space (304), and the liquid in the raw water space (303) laterally passes through the filter element (302) to enter the purified water space (304) when the pump (200) is working.

3. The pet water fountain of claim 1, wherein, Further comprising: a purified water outlet (305) in communication with the purified water space (304). a first vent hole (308) in communication with the raw water space (303), the raw water space (303) being in communication with the atmosphere outside the body of the pet water dispenser via the first vent hole (308), and the first vent hole (308) being higher than the highest liquid level of the raw water space (303); the gas in the purified water space (304) is discharged from the pet water dispenser via the purified water outlet (305), and the liquid in the purified water space (304) is output to the water drinking part (401) via the purified water outlet (305).

4. The pet water fountain of claim 3, wherein Further comprising: a buffer space (307) in communication with the purified water space (304) and the purified water outlet (305), the buffer space (307) being used for buffering the liquid flowing out of the purified water space (304) to avoid the liquid being directly sprayed out of the purified water outlet (305); the liquid in the purified water space (304) first flows into the buffer space (307) and then flows from the buffer space (307) to the purified water outlet (305).

5. The pet water fountain of claim 4, wherein, The first vent hole (308) is in communication with the buffer space (307), and the first vent hole (308) is in communication with the raw water space (303) and the purified water outlet (305); when the raw water space (303) inputs liquid, the gas in the raw water space (303) is discharged from the purified water outlet (305) via the first vent hole (308) and the buffer space (307).

6. The pet water fountain of claim 5, wherein, The buffer space (307) is located above the purified water space (304).

7. The pet water fountain of claim 5, wherein, The shell (301) is provided with the raw water space (303), the purified water space (304) and the filter core (302), the shell (301) includes an upper end cover (309) located at the top and a lower end cover (310) located at the bottom, the purified water outlet (305) is provided on the upper end cover (309), and a connecting pipe (316) is provided around the purified water outlet (305) on the upper end cover (309), the connecting pipe (316) is the buffer space (307) inside.

8. The pet drinking fountain according to claim 7, wherein The first vent hole (308) is provided on the connecting pipe (316).

9. The pet drinking fountain of claim 7, wherein, The shell (301) is provided with a filter core water outlet (315), the purified water space (304) and the buffer space (307) are in communication through the filter core water outlet (315), and the filter core water outlet (315) is staggered with the purified water outlet (305).

10. The pet water fountain of claim 9, wherein, The filter core (302) includes a filter core body (312) and a filter core end cover (313) connected to the upper part of the filter core body (312), the lower end of the filter core body (312) is provided on the lower end cover (310), the filter core end cover (313) is connected with the connecting pipe (316), The filter core (302) is internally provided with the purified water space (304), the filter core end cover (313) is provided with the filter core water outlet (315) which is communicated with the purified water space (304) and the buffer space (307), and the water outlet direction of the filter core water outlet (315) deviates from the purified water outlet (305).

11. The pet water fountain of claim 10, wherein, The buffer space (307) is jointly formed by the connecting pipe (316) and the filter core end cover (313).

12. The pet drinking fountain according to claim 3, wherein The purified water outlet (305) is located above the raw water space (303).

13. The pet drinking fountain according to claim 4, wherein The second projection corresponding to the normal projection of the buffer space (307) and the purified water space (304) on the plane where the bottom surface of the filter device (300) is located is overlapped with the first projection, and the second projection is smaller than the first projection.

14. The pet drinking fountain according to claim 1, wherein The filter core (302) is a polypropylene activated carbon filter core, and the raw water space (303) is placed with a hydrogen ion exchange resin member and a potassium ion exchange resin member.

15. The pet drinking fountain according to claim 1, wherein The pet water dispenser further comprises a descaling filter element placed in the raw water space (303) for removing calcium and magnesium ions in the liquid in the raw water space (303).

16. The pet drinking fountain of claim 10 wherein, The ring body (317) is in sealing cooperation with the connecting pipe (316) through a sealing element (329).

17. The pet drinking fountain of claim 16, wherein, The connecting pipe (316) is provided with a communication part, and after the connecting pipe (316) is tightly combined with the ring body (317), the part of the communication part which is communicated with the buffer space (307) and the raw water space (303) constitutes the first exhaust hole (308).

18. The pet drinking fountain of claim 17, wherein, The communication part is a hole or a notch provided on the connecting pipe (316).

19. The pet drinking fountain according to claim 4, wherein The first exhaust hole (308) has an opening area of 10mm 2 14mm 2 .

20. The pet drinking fountain according to claim 7, wherein, The lower end cover (310) is further provided with a water inlet (319) and a water outlet column (321), the water inlet (319) and the exhaust port (320) penetrate the upper surface and the lower surface of the lower end cover (310), the water outlet column (321) is vertically arranged in the raw water space (303), the lower end of the water outlet column (321) is open and communicated with the water inlet (319), the upper end of the water outlet column (321) is open and forms a filter core water inlet (330), and the second exhaust hole (314) of the exhaust column (322) is higher than the filter core water inlet (330).

21. The pet drinking fountain according to claim 20, wherein, The water inlet (319) is communicated with the pump outlet (202) through a water outlet pipe (700), and the exhaust port (320) is configured to be directed to the water inlet (319), When the liquid level in the raw water space (303) exceeds the highest liquid storage surface of the raw water space (303), the liquid in the raw water space (303) can reach the exhaust port (320) through the second exhaust hole (314) and flow back to the water storage cavity (101) along the water outlet pipe (700).

22. The pet drinking fountain according to claim 1, wherein The opening area of the exhaust port (320) is 2mm 2 -5mm 2 .

23. The pet drinking fountain according to claim 10, wherein, The lower end cover (310) is further provided with a positioning column (323) located in the raw water space (303), and the edge of the filter core end cover (313) is provided with a first positioning hole (324) and a second positioning hole (325), The lower end of the positioning column (323) is connected with the lower end cover (310), the upper end of the positioning column (323) is matched with the positioning part (326) of the upper end cover (309) after passing through the first positioning hole (324), and the exhaust column (322) passes through the second positioning hole (325), and the second exhaust hole (314) of the exhaust column (322) has a gap (327) with the upper end cover (309).

24. The pet drinking fountain of claim 23, wherein, The first positioning hole (324) and the second positioning hole (325) are different in size and / or shape.

25. The pet drinking fountain according to claim 7, wherein, The top of the upper end cover (309) has a flow guide surface (328) extending from the purified water outlet (305) to the drinking water part (401), and the flow guide surface (328) is arranged as a recess extending from the vicinity of the purified water outlet (305) to at least part of the edge of the upper end cover (309).

26. The pet drinking fountain according to claim 20, wherein, A drinking water disc (400) is arranged at the open upper end of the water tank (100), and at least part of the drinking water disc (400) constitutes the drinking water part (401).

27. The pet drinking fountain of claim 26 wherein, The drinking water disc (400) has a recessed purified water containing part constituting the drinking water part (401) and a backflow hole (402) arranged beside the purified water containing part, and the backflow hole (402) is communicated with the water storage cavity (101), and liquid exceeding the highest liquid level of the drinking water part (401) can flow back to the water storage cavity (101) through the backflow hole (402).

28. The pet drinking fountain of claim 27 wherein, The depth of the drinking water part (401) is not less than 20 mm, and the depth refers to the vertical distance between the backflow hole (402) and the bottom surface of the drinking water part (401).

29. The pet drinking fountain according to claim 28, wherein, The upper part of the water tank (100) is further provided with a primary filter (500) having a filter part (503) for filtering liquid flowing back from the drinking water part (401) to the water storage cavity (101).

30. The pet drinking fountain of claim 29 wherein, The filter part (503) is below the drinking water part (401), and the filter part (503) includes a backflow port (505) provided with a second filter structure.

31. The pet drinking fountain according to claim 30, wherein, The filter part (503) further includes a buffer area (504) and a flow guide groove (506) surrounding the buffer area (504), and the flow guide groove (506) is in fluid communication with the backflow port (505); the buffer area (504) is arranged to protrude towards the drinking water part (401), and liquid flowing out of the backflow hole (402) is divided and collected into the flow guide groove (506) through the buffer area (504), and then flows into the water storage cavity (101) through the backflow port (505) along the flow guide groove (506).

32. The pet drinking fountain according to claim 29, wherein, The primary filter (500) has a receiving part (507), the water tray (400) is provided with a mounting hole (403), the lower part of the filter device (300) is arranged on the receiving part (507), the upper part of the filter device (300) passes through the mounting hole (403), and the clean water outlet (305) is higher than the water drinking part (401).

33. The pet drinking fountain according to claim 32, wherein, The distance between the mounting hole (403) and the bottom surface of the water drinking part (401) is greater than the distance between the backwater hole (402) and the bottom surface of the water drinking part (401).

34. The pet drinking fountain of claim 32, wherein, The receiving part (507) comprises a mounting groove (501) and a through hole (502) arranged in the mounting groove (501), the water inlet (319) of the lower end cover (310) is opposite to the through hole (502), the pump outlet (202) is in communication with the inlet of a water outlet pipe (700), the outlet of the water outlet pipe (700) passes through the through hole (502) and is in butt joint with the water inlet (319), and the air outlet (320) of the lower end cover (310) is exposed from the through hole (502).

35. The pet drinking fountain according to claim 1, wherein, The pump (200) is arranged at the bottom of the water tank (100) and comprises: a pump shell (204), wherein the pump inlet (201) and the pump outlet (202) are arranged on the pump shell (204), and the bottom surface of the pump shell (204) is in contact with the bottom surface of the water tank (100); an impeller (205) comprising an impeller water inlet and an impeller water outlet, wherein the impeller water inlet is in communication with the pump inlet (201), and the impeller water outlet is in communication with the pump outlet (202); an impeller cover (206) located between the pump inlet (201) and the impeller water inlet, comprising an impeller cover water inlet (209) and an impeller cover water outlet (210), wherein the impeller cover water outlet (210) is in communication with the impeller water inlet, and the distance from the impeller cover water inlet (209) to the bottom surface of the pump shell (204) is less than the distance from the impeller cover water outlet (210) to the bottom surface of the pump shell (204); a water shortage probe (203) connected to the pump shell (204), wherein the distance from the water shortage probe (203) to the bottom surface of the pump shell (204) is greater than the distance from the upper end of the impeller cover water inlet (209) to the bottom surface of the pump shell (204), and the upper end of the impeller cover water inlet (209) refers to the end farthest from the bottom surface of the pump shell (204).

36. The pet drinking fountain of claim 35 wherein, The pump inlet (201) is arranged on one side of the pump shell (204), the water shortage probe (203) is arranged on the other side of the pump shell (204) opposite to the pump inlet (201), and the pump outlet (202) is arranged at the top of the pump shell (204).

37. The pet drinking fountain of claim 36 wherein, The impeller cover water inlet (209) faces the bottom surface of the pump shell (204).

38. The pet drinking fountain of claim 37 wherein, The distance from the water shortage probe (203) to the bottom surface of the pump shell (204) is greater than the distance from the upper end of the impeller cover water outlet (210) to the bottom surface of the pump shell (204), wherein the upper end of the impeller cover water outlet (210) refers to the end farthest from the bottom surface of the pump shell (204) on the impeller cover water outlet (210).

39. The pet drinking fountain according to claim 1, wherein, The pump inlet (201) is provided with a first filter structure (211).

40. The pet drinking fountain according to claim 1, wherein, The pump (200) is a wireless water pump.

41. The pet drinking fountain according to claim 1, wherein, The pet water dispenser further comprises a UV lamp installed in the water storage cavity (101) for sterilizing the liquid in the water storage cavity (101).

42. The pet drinking fountain according to claim 26, wherein, The water bowl (400) is made of stainless steel.

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