Pet water fountain

Abstract

The present application relates to the technical field of pet products, in particular to a pet water dispenser. The present application provides a pet water dispenser, which comprises a water tank, the water tank comprises a clean water tank and a sewage tank; further comprising a water accumulation tray, which is used for storing water for pets to drink; further comprising a first water pump, which sucks the water in the clean water tank into the water accumulation tray; the water accumulation tray is provided with a sewage discharge hole, which is communicated with the sewage tank; further comprising a filter, the water in the sewage tank enters the clean water tank after being filtered by the filter. The present application aims at solving the technical problem that the water in the sewage tank of the water dispenser in the prior art cannot be recycled, resulting in water waste.

Description

Technical Field

[0001] This invention relates to the technical field of pet products, and in particular to a pet water fountain. Background Technology

[0002] A pet water fountain is a smart water device designed specifically for pets, aiming to provide a more convenient, healthy, and safe drinking experience. For the health of pets, many water fountains separate wastewater from clean water.

[0003] For example, Chinese utility model patent CN220123671U, published on 2023-12-05, discloses a pet water dispenser that separates clean water from wastewater. The dispenser includes: a clean water tank, a water pump, a water pipe, a wastewater tank, a water feeding tray, an electric actuator, and a drain baffle. The water feeding tray holds water for pets and has an inlet and an outlet. One end of the water pipe extends into the clean water tank and is connected to the inlet via the water pump, which draws water from the clean water tank to the outlet. The drain baffle is rotatably positioned below the outlet to close it. The electric actuator is connected to the drain baffle and rotates to open the outlet. The wastewater tank is located below the outlet and collects water falling from the water feeding tray. However, the water in the wastewater tank of this patent cannot be recycled, leading to water waste.

[0004] Therefore, it is necessary to propose a pet water dispenser that can separate wastewater and clean water and recycle wastewater. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a pet water fountain that solves the technical problem that the water in the wastewater tank of the existing water fountain cannot be recycled, resulting in water waste.

[0006] To achieve the above objectives, the present invention proposes a pet water fountain, comprising a water tank including a clean water tank and a wastewater tank; a water collection tray for storing water for pets to drink; a first water pump for drawing water from the clean water tank into the water collection tray; a drain hole on the water collection tray, the drain hole being connected to the wastewater tank; and a filter for filtering water from the wastewater tank before entering the clean water tank.

[0007] Preferably, the water collection pan is provided with a water outlet, which is positioned higher than the drain hole. The base is provided with a lifting head, which can block the drain hole when it descends and allow the drain hole to discharge sewage when it rises. The drain hole is located at the lowest point of the water collection pan.

[0008] Preferably, an inclined protrusion is provided on one side of the water collection pan, and the inclination angle of the inclined protrusion is larger than the inclination angle of the corresponding section of the water collection pan; the terrain of the water collection pan gradually slopes down from all sides towards the drain hole.

[0009] Preferably, the lifting head includes a silicone head, a mounting base for mounting the silicone head, and a rotating plate for controlling the lifting of the mounting base; a rotating motor is connected to the side of the rotating plate away from the mounting base; a spring is provided on the rotating plate, the other end of the spring is connected to the base, and the base is provided with a spring seat with an inclined bottom surface.

[0010] Preferably, the filter includes a filter housing, a partition disposed within the filter housing, and a first filter channel and a second filter channel disposed on both sides of the partition.

[0011] Preferably, an ultrafiltration filter element is provided inside the filter housing, the ultrafiltration filter element is on the same side as the first filtration channel, and the first filtration channel is connected to the ultrafiltration filter element; a first sealing element and a second sealing element are respectively provided in the first filtration channel and the second filtration channel.

[0012] Preferably, a second water pump is provided on the base. The second water pump includes a water pump body, a plug is provided on the water pump body, a pump body is provided on one side of the water pump body, and a hollow shell is provided on the other side.

[0013] Preferably, the base is provided with a first socket, a second socket and a water pump mounting base, and the water pump mounting base is provided with a first water inlet pipe and a second water inlet pipe.

[0014] Preferably, the water pump mounting base is also provided with a first water outlet pipe and a second water outlet pipe; the first water inlet pipe, the first water outlet pipe, the second water inlet pipe and the second water outlet pipe are arranged in a row; a second sealing component is provided inside the second water inlet pipe.

[0015] Preferably, the water pipes of the first water pump, the clean water tank, and the second inlet water pipe are connected by a three-way valve; the sewage tank is connected to the first inlet water pipe by a water pipe, and the bottom of the filter is connected to the first outlet water pipe and the second outlet water pipe by a water pipe.

[0016] Compared with the prior art, the beneficial effects of the pet water dispenser provided by the present invention are as follows:

[0017] Pet water fountains separate clean water from wastewater, allowing wastewater to be reused after filtration. They also enable backwashing of the filter itself, resulting in a high degree of automation and water conservation.

[0018] Most existing water dispensers recirculate water and typically have one water tank. However, water dispensers using a clean / dirty water separation system do not recirculate water; the dirty water remains in the dirty water tank. Our machine has an emergency mode. In clean / dirty water separation mode, if the water tank is full and no one is home, the emergency mode can be used to filter the dirty water into the clean water tank. In contrast, other clean / dirty water dispensers stop operating when the dirty water tank is full, leaving the pet without water.

[0019] The reason this invention has two water tanks is primarily to ensure that the water in the purified water tank is completely filtered by the ultrafiltration cartridge. This results in very low bacterial content in the purified water tank, preventing biofilm formation. In this case, the wastewater tank mainly serves as a transfer tank. Without a wastewater tank, it's technically difficult to directly draw water from the water tray into the purified water tank. Water dispensers using ordinary filters instead of ultrafiltration cartridges tend to have higher bacterial content in their water tanks compared to those using ultrafiltration cartridges, leading to biofilm formation after a period of use and deteriorating water quality. Water dispensers using ultrafiltration cartridges typically place the ultrafiltration cartridge between the water pump and the water tank, or inside the tank itself, meaning the water in the tank hasn't been filtered by the ultrafiltration cartridge. Therefore, such dispensers also experience biofilm formation or bacterial growth. This invention solves this problem, ensuring the water in the purified water tank is sufficiently clean.

[0020] The features and advantages of the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a pet water fountain according to an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the installation disk according to an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of the water tank according to an embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the water collection tray according to an embodiment of the present invention.

[0025] Figure 5 This is a cross-sectional view of the water collection tray according to an embodiment of the present invention.

[0026] Figure 6 This is a schematic diagram of the filter structure according to an embodiment of the present invention.

[0027] Figure 7 This is a cross-sectional structural schematic diagram of the filter according to an embodiment of the present invention.

[0028] Figure 8 This is a schematic diagram of the filter channel structure of a filter according to an embodiment of the present invention.

[0029] Figure 9 This is a schematic diagram of the base structure according to an embodiment of the present invention.

[0030] Figure 10 This is a schematic diagram of the structure of AA according to an embodiment of the present invention.

[0031] Figure 11 This is a schematic diagram of the structure of BB according to an embodiment of the present invention.

[0032] Figure 12 This is an enlarged structural schematic diagram of point D in an embodiment of the present invention.

[0033] Figure 13 This is a schematic diagram of the lifting head according to an embodiment of the present invention.

[0034] Figure 14 This is a schematic diagram of the enlarged structure at point C in an embodiment of the present invention.

[0035] Figure 15 This is a schematic diagram of the structure of the second water pump according to an embodiment of the present invention.

[0036] Figure 16 This is a side view of the structure of the second water pump according to an embodiment of the present invention.

[0037] Figure 17 This is a schematic diagram of the EE cross-section of an embodiment of the present invention.

[0038] Figure 18 This is a schematic diagram of the internal structure of the base according to an embodiment of the present invention.

[0039] Figure 19 This is a schematic diagram of the fixed base structure according to an embodiment of the present invention.

[0040] Figure 20 This is a top view of the base structure according to an embodiment of the present invention.

[0041] Figure 21 This is a schematic diagram of the FF cross-sectional structure according to an embodiment of the present invention.

[0042] in:

[0043] 1-Water tank; 11-Clean water tank; 12-Sewage tank; 2-Collection tray; 21-Outlet; 22-Drain hole; 23-Inclined convex plate; 24-Mounting plate; 241-Collection trough; 242-Drain hole; 3-Filter; 31-Filter housing; 311-Ultrafiltration element; 32-Separator; 33-First filtration channel; 331-First sealing seat; 332-Through hole; 333-First spring; 334-First sealing ring; 34-Second filtration channel; 341-Second sealing seat; 342-Second sealing ring; 343-Second spring; 344-Inner groove; 35-First sealing component; 36-Second sealing component; 4-Base; 41-Spring seat; 42-Fixing seat; 421-First pipe; 4 22-Water pump mounting base; 4221-First inlet pipe; 4222-First outlet pipe; 4223-Second inlet pipe; 4224-Second outlet pipe; 4225-Third sealing element; 4226-Inlet groove; 4227-Third sealing ring; 43-First socket; 44-Second socket; 5-Lifting head; 51-Silicone head; 511-Hollow groove; 512-Annular protrusion; 52-Mounting base; 53-Rotating plate; 531-Horizontal section; 532-Inclined section; 54-Rotating motor; 55-Spring; 6-First water pump; 7-Second water pump; 71-Water pump body; 711-Plug; 712-Pump body; 713-Hollow shell; 7131-Flow guide seat; 8-Water pipe; 9-Cover plate. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0045] In the description of this invention, it should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to or indirectly connected to the other element.

[0046] In the description of this invention, it should be noted that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0047] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Example 1

[0048] See Figure 1-3 This invention provides a pet water fountain, including a water tank 1, a base 4, a water collection tray 2, a filter 3, and a first water pump 6. The water tank includes a clean water tank 11 and a waste water tank 12. The water collection tray 2 is used to store water for pets to drink. The first water pump 6 draws water from the clean water tank 11 into the water collection tray 2. The water collection tray 2 is provided with a drain hole 22, which communicates with the waste water tank 12. The filter 3 filters the water from the waste water tank 12 before it enters the clean water tank 11.

[0049] Specifically, water from the clean water tank 11 is drawn into the water collection tray 2 by the first water pump 6. Once it reaches a certain depth, it becomes accessible for pets (cats, dogs, etc.) to drink. To allow water to accumulate in the water collection tray 2, the drain hole 22 is normally closed. When the water in the water collection tray 2 becomes contaminated or needs to be replaced at a certain time, the drain hole 22 opens, and the water from the water collection tray 2 flows into the wastewater tank 12. To allow the water in the wastewater tank to be recycled, a filter 3 is added. Wastewater is filtered through the filter 3 and then discharged into the clean water tank 11. To allow filtered water to enter the clean water tank 11, a second water pump 6 is added. The second water pump 6 provides the power to allow water from the wastewater tank 12 to enter the clean water tank 11. Example 2

[0050] Based on Example 1, the following improvements are made to better treat the influent and wastewater in the water collection pan 2:

[0051] See Figure 1-5 and Figure 9-14 The water collection tray 2 is equipped with a water outlet 21, which is positioned higher than the drain hole 22. Both the water outlet 21 and the drain hole 22 are connected to the wastewater tank 12. A suction pipe on the base 4 draws water from the clean water tank into the water collection tray 2, allowing pets (cats, dogs, etc.) to drink from it. When the water level is too high, water flows from the water outlet 21 into the wastewater tank 12 to prevent overflow onto the ground.

[0052] See Figure 1-5 and Figure 9-14 In an optional embodiment, the drain hole 22 is located at the lowest point of the water collection tray 2. The terrain of the water collection tray 2 gradually slopes down from the surrounding area towards the drain hole 22. The drain hole 22 being located at the lowest point facilitates the drainage of dirt, hair, and food from the pet's mouth into the wastewater tank 12 when the pet drinks water or when the tray is left unattended for extended periods.

[0053] See Figure 1-5 and Figure 9-14 In an optional embodiment, the drain hole 22 is a cylindrical hole, and the upper part of the drain hole 22 is set with an arc-shaped interface, which forms a small vortex during drainage, resulting in faster drainage and a slight suction, thus improving the sewage discharge capacity. The water outlet 21 is an elongated hole with a large drainage capacity, preventing water from overflowing onto the ground.

[0054] See Figure 1-5 and Figure 9-14In an optional embodiment, an inclined protrusion 23 is provided on one side of the water collection tray 2, and the inclination angle of the inclined protrusion 23 is larger than the inclination angle of the corresponding section of the water collection tray 2. The inclined protrusion 23 reduces the distance of the water inlet, prevents water from splashing out when water enters the water collection tray 2, and increases the inclination angle to allow water to enter the water collection tray 2 better, and allows water to be drained completely when draining.

[0055] Below the water collection tray 2, there is also a mounting tray 24, which is set on the water tank 1, and the water collection tray 2 is set on the mounting tray 24. The mounting tray 24 is provided with a water collection trough 241 that communicates with the drain hole 22. The mounting tray 24 is provided with a drain hole 242 on the water collection trough 241, and the drain hole 22 and the drain hole 242 are staggered.

[0056] See Figure 1-5 and Figure 9-14 In an optional embodiment, the lifting head 5 descends to block the drain hole 22, and rises to allow the drain hole 22 to drain waste. Specifically, in the prior art, the water in the pool is often recycled, while the water in the collection tray 2 is often contaminated, containing dust, pet hair, or even food from the pet's mouth. Recycling this water can affect the pet's health. The drain hole 22 is normally closed when the pet is drinking, and can be blocked by the downward movement of the lifting head 5. When the water in the collection tray 2 has not been finished for a long time, or when there is too much contaminant, the lifting head 5 rises to drain the contaminated water from the drain hole 22, and then descends to block the drain hole, allowing clean water to be drawn back into the collection tray 2 or poured in.

[0057] See Figure 1-5 and Figure 9-14 In an optional embodiment, the lifting head 5 includes a silicone head 51, a mounting base 52 for mounting the silicone head 51, and a rotating plate 53 for controlling the lifting of the mounting base 52.

[0058] See Figure 1-5 and Figure 9-14 In an optional embodiment, the silicone head 51 has a hollow groove 511 at its center, and a plurality of annular protrusions 512 are provided at its bottom. Each protrusion can block water, providing multiple layers of protection against water blockage. The silicone head 51 has a better sealing effect, and the hollow groove 511 makes it easier to deform and better fit the drain hole 22.

[0059] See Figure 1-5 and Figure 9-14In an optional embodiment, when the lifting head 5 blocks the drain hole 22, the rotating plate 53 is provided with a horizontal section 531 and an inclined section 532. One end of the horizontal section 531 is connected to the mounting base 52, and the other end is connected to the inclined section 532. The lifting head 5 blocks the drain hole 22 by rotating the rotating plate 53. A spring 55 is provided on the rotating plate 53, and the other end of the spring 55 is connected to the base 4. The base 4 is provided with a spring seat 41 with an inclined bottom surface.

[0060] The lifting head 5 can be rotated electrically or manually. In electric mode, a rotating motor 54 is connected to the side of the rotating plate 53 away from the mounting base 52, controlling the position of the lifting head 5. The rotating motor 54 rotates in one direction, and the circuit board controls the energizing and de-energizing time of the rotating motor 54. When the rotating motor 54 is energized, it compresses the spring; when the rotating motor 54 is de-energized, the spring 55 causes the lifting head 5 to re-block the drain hole 22. In manual mode, the hand replaces the function of the rotating motor 54. By setting the spring 55, the lifting head 5 can automatically descend and block the drain hole 22 when manually operated, resulting in a better sealing effect. (Preferably, an intelligent electric mode is preferred.)

[0061] Because the bottom surface of the spring seat 41 is inclined, and one side of the spring 55 is set inside the spring seat 41, when the rotating plate 53 rotates to disengage the lifting head 5 from the drain hole 22, the horizontal section 531 fits the bottom surface of the spring seat 41. Since the inclination angles of both are the same, they can overlap, extending the lifting height of the lifting head 5. The horizontal section 531 should not be too long, reducing the difficulty of matching it with the spring seat 41. When the rotating motor 54 is energized, the rotating plate 53 rotates upward and lifts, simultaneously compressing the spring 55, until it is stuck and cannot move. When the rotating motor 54 is de-energized, the spring force of the spring 55 returns the rotating plate to its original position. The fit between the bottom surface of the spring seat 41 and the horizontal section 531 increases the compression distance of the spring 55, resulting in greater elastic force at the highest position and faster reset speed. Example 3

[0062] Based on Examples 1 and 2, the filter 3 can allow water from the wastewater tank 12 to enter the clean water tank 11. However, the filtration effect of the filter 3 will deteriorate during long-term use, and frequent disassembly and cleaning are complicated, time-consuming and laborious. The present invention provides a filter 3 that can be backwashed.

[0063] See Figure 1-21 The filter 3 is detachably mounted on the base 4. The filter 3 includes a filter housing 31, a partition 32 disposed within the filter housing 31, and a first filter channel 33 and a second filter channel 34 disposed on both sides of the partition 32, wherein the first filter channel 33 and the second filter channel 34 are interconnected.

[0064] See Figure 1-21 An ultrafiltration filter element 311 is disposed within the filter housing 31. The ultrafiltration filter element 311 is on the same side as the first filtration channel 33, and the first filtration channel 33 communicates with the ultrafiltration filter element 311. A first sealing element 35 is disposed within the first filtration channel 33. A first sealing seat 331 is disposed within the first filtration channel 33, and a through hole 332 is formed on the side of the first sealing seat 331. A first spring 333 is disposed between the top of the first sealing seat 331 and the first sealing element 35. A first sealing ring 334 is disposed on the first filtration channel 33. The first spring 333 pushes the first sealing element 35 against the first sealing ring 334, thereby achieving a seal. The first seal 334 is fixed within the first filtration channel 33. By providing multiple side through holes 332, the water inflow and outflow on this side are increased and more thorough.

[0065] See Figure 1-21 The second filter channel 34 is provided with a second sealing seat 341 and a second sealing element 36. The top of the second sealing seat 341 has an opening. A second sealing ring 342 is provided at the bottom of the second filter channel 34. A second spring 343 is provided between the top of the second sealing seat 341 and the second sealing element 36. The side of the second sealing seat 341 is provided with a plurality of axially distributed inner grooves 344, preferably six inner grooves. By providing inner grooves 344, the water pressure at the inlet and outlet on this side is increased.

[0066] When the filter 3 is pulled out of the base 4, the first sealing member 35 and the second sealing member 36 are tightly connected to the first seal 334 and the second sealing ring 342 at the bottom to prevent water from leaking out of the filter 3.

[0067] The base 4 contains a fixed seat 42, on which a filter mounting seat is mounted. The filter mounting seat has two first pipes 421 extending upwards and downwards, each corresponding to a first filter channel 33 and a second filter channel 34. When the filter 3 is inserted into the filter mounting seat, the first pipes 421 are inserted into the first sealing seat 331 and the second sealing seat 341, respectively, raising the first sealing element 35 and the second sealing element 36, thus enabling water inlet and outlet.

[0068] See Figure 1-21To achieve backwashing, the filter 3 also requires a second water pump 7 that can change the flow direction. The mounting base 42 includes a pump mounting base 422, and the second water pump includes a pump body 71 that is pluggably mounted on the pump mounting base 422. The base 4 is provided with a first socket 43 and a second socket 44. A plug 711 is provided on the pump body 71, and a first inlet pipe 4221 and a second inlet pipe 4223 are provided on the pump mounting base 422. When the first socket 43 is connected to the plug 711, the first inlet pipe 4221 actively receives water; when the second socket 43 is connected to the plug 711, the second inlet pipe 4223 actively receives water. When replacing the pump body 71, it can simply be unplugged. Figure 5 For the pump body 71, simply pull it out and insert the new pump body 71 into the mounting hole of the pump mounting base 422. If it is necessary to change the flow direction of the second pump 7, simply pull out the pump body 71 and change the original plug 711 aligned with the first socket 43 to the plug 711 aligned with the second socket 12. The first inlet pipe 4221 and the second inlet pipe 4223 are connected to different inlets.

[0069] See Figure 1-21 In an optional embodiment, the pump body 71 has a pump body 712 on one side and a hollow shell 713 on the other side. The pump mounting base 422 is also provided with a first outlet pipe 4222 and a second outlet pipe 4224. When the pump body 712 corresponds to the first inlet pipe 4221 and the first outlet pipe 4222, the hollow shell 713 corresponds to the second inlet pipe 4223 and the second outlet pipe 4224. When the pump body 712 corresponds to the second inlet pipe 4223 and the second outlet pipe 4224, the hollow shell 713 corresponds to the first inlet pipe 4221 and the first outlet pipe 4222.

[0070] Specifically, the bottom of the water pump body 71 is provided with an extension pipe that cooperates with the first inlet pipe 4221, the first outlet pipe 4222, the second inlet pipe 4223, and the second outlet pipe 4224. The first outlet pipe 4222 and the second outlet pipe 4224 can be a single pipe. When water enters through the first inlet pipe 4221, water exits through the outlet pipe. When water enters through the second inlet pipe 14, water also exits through the outlet pipe.

[0071] Of course, the first outlet pipe 4222 and the second outlet pipe 4224 can be two different pipes. The pump body 712 is the power source for active water suction. The position corresponding to the pump body 712 is the active water suction position, and the pipe corresponding to the hollow shell 713 is used depending on the actual situation. When the hollow shell 713 pipe is not in use, when the pump body 712 corresponds to the first inlet pipe 4221 and the first outlet pipe 4222, water enters through the first inlet pipe 4221 and exits through the first outlet pipe 4222. If the pump body 712 corresponds to the second inlet pipe 4223 and the second outlet pipe 4224, water enters through the second inlet pipe 4223 and exits through the second outlet pipe 4224.

[0072] When the hollow shell 713 is in use (this is the preferred backwashing solution), when the pump body 712 corresponds to the first inlet pipe 4221 and the first outlet pipe 4222, water enters through the first inlet pipe 4221 and exits through the first outlet pipe 4222, then enters through the second outlet pipe 4224 and exits through the second inlet pipe 4223. When the pump body 712 corresponds to the second inlet pipe 4223 and the second outlet pipe 4224, water enters through the second inlet pipe 4223 and exits through the second outlet pipe 4224, then enters through the first outlet pipe 4222 and exits through the first inlet pipe 4221. The hollow shell 713 is provided with a flow guide seat 7131 to guide the second inlet pipe 4223 and the second outlet pipe 4224. Water flows through the flow guide seat 7131 and will not flow into the pump body 712 and cause a short circuit.

[0073] See Figure 1-21 In an optional embodiment, the first inlet pipe 4221, the first outlet pipe 4222, the second inlet pipe 4223, and the second outlet pipe 4224 are arranged in a row; the first outlet pipe 4222 and the second outlet pipe 4224 are located between the first inlet pipe 4221 and the second inlet pipe 4223, or the first inlet pipe 4221 and the second inlet pipe 4223 are located between the first outlet pipe 4222 and the second outlet pipe 4224. The cross-section of the pump body 71 is annular racetrack-shaped, and the plug 711 is located on the side of the pump body 71; the first socket 43 and the second socket 12 are symmetrically arranged on both sides of the pump body 71. This allows all positions to align when the direction of the pump body 71 is changed, facilitating changes in flow direction.

[0074] See Figure 1-21The second water pump 7 is used in conjunction with a filter in a pet water fountain. The filter cartridge has two pipes at its bottom, connecting to the first outlet pipe 4222 and the second outlet pipe 4224 respectively. The pet water fountain has a clean water tank and a waste water tank. The first inlet pipe 4221 connects to the clean water tank via a water pipe, and the second inlet pipe 4223 connects to the waste water tank via a water pipe. All pipes, water tanks, and filter cartridges are connected via water pipes. Water pipes 8 are connected to the first inlet pipe 4221, the first outlet pipe 4222, the second inlet pipe 4223, and the second outlet pipe 4224.

[0075] The water pipes connecting the first water pump 6 (suction pipe), the second water pump 7 (second inlet pipe 4223), and the clean water tank 11 are connected by a three-way valve.

[0076] The second inlet pipe 4223 is equipped with a second sealing element 4225. The inner sidewall of the second inlet pipe 4223 has inlet grooves 4226, preferably five grooves evenly distributed on the sidewall. A third sealing ring 4227 is provided on the second inlet pipe 4223, and a third spring is provided between the third sealing element 4225 and the bottom of the second inlet pipe 4223. When the second water pump 7 is pulled out, the third spring causes the third sealing element 4225 to rise and form a seal with the third sealing ring 4227. The top of the third sealing element 4225 has a beveled cut to better fit the third sealing ring 4227 and form a seal. The second water pump 7 extends downwards with a protruding tube. When the second water pump 7 is inserted into the water pump mounting base 4222, the protruding tube inserts into the second inlet pipe 4223, causing the third sealing element 4225 to face downwards, thus allowing free water inlet and outlet.

[0077] Pet water fountains offer various water flow modes, with the specific flow directions as follows:

[0078] 1. Water Filling the Collection Pan: The first water pump starts, drawing water from the purified water tank through the inlet pipe into the collection pan. Water is then discharged from the outlet into the collection pan. Filling stops when the water level in the collection pan reaches a certain height. During this process, when the second water pump is not running, it acts as a one-way valve, preventing water from the purified water tank from flowing into it. When the second water pump is pulled out, the third sealing element and the third sealing ring form a seal, also acting as a one-way valve, preventing water from flowing out of the purified water tank.

[0079] 2. Wastewater enters the clean water tank from the wastewater tank: Pump body 712 corresponds to the first inlet pipe 4221 and the first outlet pipe 4222. Water from the wastewater tank 12 enters through the first inlet pipe 4221, and the water flowing out through the first outlet pipe 4222 enters the filter element for filtration and then flows into the second outlet pipe 4224. From the second outlet pipe 4224, it reaches the hollow shell 713, and then flows out through the second inlet pipe 4223 into the clean water tank. At this time, when the first water pump 6 is not running, it acts as a one-way valve, and the filtered water cannot flow into the first water pump 6.

[0080] 3. When backwashing the filter element: The position of pump body 712 is reversed, aligning with the second outlet pipe 4224 and the second inlet pipe 4223. Water from the clean water tank flows in through the second inlet pipe 4223 and out through the second outlet pipe 4224 to rinse the filter element. The rinsed water flows from the first outlet pipe 4222 into the hollow housing 713, and then out through the first inlet pipe 4221 into the wastewater tank. When the first water pump 6 is not running, it acts as a one-way valve, preventing water from the clean water tank from entering the first water pump 6. Due to the special design of the two first filter channels 33 and the second filter channel 34 at the bottom of the filter 3, there is a greater inlet water impact force during backwashing, resulting in smoother drainage through the first filter channel 33. Example 4

[0081] Based on embodiments 1-3, in order to make the pet water fountain more uniform in size, the first water pump 6 and the second water pump 7 are arranged parallel and inclined on the base 4. The filter 3 is arranged horizontally on the base 4.

[0082] See Figure 1-2 A cover plate 8 is also installed on the base 4 to cover the water pump and filter, improving safety. The cover plate 4 is removable.

[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pet water fountain, comprising a water tank (1), said water tank including a clean water tank (11) and a wastewater tank (12); and further comprising a water collection tray (2) for storing water for pets to drink; characterized in that: It also includes a first water pump (6) to draw water from the clean water tank (11) into the water collection tray (2); the water collection tray (2) is provided with a drain hole (22), which is connected to the sewage tank (12); it also includes a filter (3), through which the water in the sewage tank (12) enters the clean water tank (11); the filter (3) includes a filter housing (31), a partition (32) provided in the filter housing (31), and a first filter channel (33) and a second filter channel (34) provided on both sides of the partition (32); an ultrafiltration filter element (311) is provided in the filter housing (31), the ultrafiltration filter element (311) and the first filter channel (33) are on the same side, and the first filter channel (33) is connected to the ultrafiltration filter element (311); a second water pump (7) is provided on the base (4), the second water pump... The pump (7) includes a pump body (71), on which a plug (711) is provided; the base (4) is provided with a first socket (43), a second socket (44) and a pump mounting base (422), on which a first inlet pipe (4221) and a second inlet pipe (4223) are provided; the pump mounting base (422) is also provided with a first outlet pipe (4222) and a second outlet pipe (4224); the sewage tank (12) is connected to the first inlet pipe (4221) through a water pipe, and the bottom of the filter (3) is connected to the first outlet pipe (4222) and the second outlet pipe (4224) through a water pipe; if it is necessary to change the direction of the second pump (7), it is only necessary to pull out the pump body (71) and change the plug (711) from being aligned with the first socket (43) to being aligned with the second socket (12).

2. The pet water fountain as described in claim 1, characterized in that: The water collection pan (2) is provided with a water outlet (21), which is higher than the drain hole (22). The base (4) is provided with a lifting head (5). When the lifting head (5) descends, it can block the drain hole (22), and when it rises, it can drain the sewage from the drain hole (22). The drain hole (22) is located at the lowest position of the water collection pan (2).

3. A pet water fountain as described in claim 1, characterized in that: An inclined protrusion (23) is provided on one side of the water collection pan (2), and the inclination angle of the inclined protrusion (23) is greater than the inclination angle of the corresponding section of the water collection pan (2); the terrain of the water collection pan (2) gradually descends from all sides towards the drain hole (22).

4. A pet water fountain as described in claim 2, characterized in that: The lifting head (5) includes a silicone head (51), a mounting base (52) for mounting the silicone head (51), and a rotating plate (53) for controlling the lifting of the mounting base (52); a rotating motor (54) is connected to the side of the rotating plate (53) away from the mounting base (52); a spring (55) is provided on the rotating plate (53), and the other end (55) of the spring is connected to the base (4), and a spring seat (41) with an inclined bottom surface is provided on the base (4).

5. A pet water fountain as described in claim 1, characterized in that: The first filter channel (33) and the second filter channel (34) are respectively provided with a first sealing element (35) and a second sealing element (36).

6. A pet water fountain as described in claim 1, characterized in that: The pump body (71) has a pump body (712) on one side and a hollow shell (713) on the other side.

7. A pet water fountain as described in claim 6, characterized in that: The first water inlet pipe (4221), the first water outlet pipe (4222), the second water inlet pipe (4223) and the second water outlet pipe (4224) are arranged in a row; a second sealing component (4225) is provided inside the second water inlet pipe (4223).

8. A pet water fountain as described in claim 7, characterized in that: The water pipes of the first water pump (6), the clean water tank (11), and the second water inlet pipe (4224) are connected by a three-way valve.

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