Water supply assembly, water supply system of pet water dispenser and water dispenser with the system

Abstract

A water supply assembly, water supply system and water dispenser with the system of pet water dispenser which can continuously or intermittently inject clean water into the water tray for a long service life and without human attendance. The upper end of the water supply pipe in the water supply assembly is sealingly connected to the water supply chamber located at the top of the dispenser cabinet, and the lower end of the water supply pipe is placed in the water of the water storage tank of the dispenser. A one-way water valve is provided at the lower end of the water supply pipe to suck the water in the water storage tank into the water supply pipe or keep the water in the water supply pipe according to the operation state of the water pump arranged in the water supply chamber. The water quantity sensor can automatically power off and remind in the state of water shortage in the water storage tank. The UV lamp sterilization can make the drinking water cleaner. The multi-layer filtration of impurities in water can further purify the water quality. The cabinet and top cover made of stainless steel are convenient for users to clean and have a long service life.

Description

TECHNICAL FIELD

[0001] The present application relates to a pet water fountain, in particular to a pet water fountain using an impeller pump as water circulating power. BACKGROUND

[0002] Nowadays, pet water fountains are increasingly favored by pet owners because they can provide clean and sterile drinking water for pets (pet cats, pet dogs, etc.) and can automatically circulate the drinking water. Generally, a pet water fountain includes a drinking tray arranged at the top of the water fountain and open, a water storage tank arranged in the water fountain cabinet, a water supply system for lifting and continuously injecting water in the water storage tank into the drinking tray, a backflow system for returning the remaining water in the drinking tray to the water storage tank, and a water filtration device, etc.

[0003] The water supply system used in the prior art pet water fountain to lift the water in the water storage tank to the drinking tray generally has the following types:

[0004] 1. A submersible pump is placed in the water storage tank to squeeze the water in the water storage tank upward through the water supply pipe and spray it out of the water injection port. The submersible pump is placed in water for a long time, which has the following disadvantages: first, it affects the service life; second, the power and signal control line for controlling the water pump need to be placed in water, which brings certain hidden dangers to use; third, the submersible pump has a large noise.

[0005] 2. A diaphragm pump is arranged at the top of the water fountain cabinet, and the water in the water storage tank is lifted up through the water supply pipe extending into the water storage tank and injected into the drinking tray. The water supply system has the following disadvantages: first, the service life of the diaphragm pump is short; second, it has a large noise; third, when the diaphragm pump stops working, the water in the water supply pipe will flow back into the water storage tank, and when the diaphragm pump is started again, the water supply pipe needs to be filled with water to make the diaphragm pump work normally. Therefore, when the pet owner is away for several days, the diaphragm pump needs to work continuously, otherwise, the water supply to the drinking tray will be interrupted. SUMMARY

[0006] The technical problem to be solved by the present application is to provide a water supply assembly, a water supply system and a water fountain with the system of a pet water fountain, which has a small noise, a long service life and can continuously or intermittently inject clean water into the drinking tray when unattended.

[0007] To solve the above technical problems, the technical solution adopted by the present application is:

[0008] The water supply assembly for pet water dispenser of the present invention comprises a water supply pipe, characterized in that the upper end of the water supply pipe is sealingly connected to the water supply chamber on the top of the dispenser case, and the lower end of the water supply pipe is placed in the water in the water storage tank of the dispenser, and a one-way water valve is arranged at the lower end of the water supply pipe to suck the water in the water storage tank into the water supply pipe or to keep the water in the water supply pipe according to the running state of the water pump arranged in the water supply chamber.

[0009] The one-way water valve comprises a valve upper shell, a valve bottom shell and a valve support, the upper end of the valve upper shell is communicated with the water supply pipe and sealingly connected thereto, the valve upper shell is sealingly connected with the valve bottom shell and a hollow inner cavity is formed therebetween, the valve support is arranged in the hollow inner cavity, a base plate is arranged in the valve upper shell and connected with the upper end of the valve support, water passing holes are arranged on both sides of the base plate to make the hollow inner cavity communicated with the water supply pipe, a water inlet hole is arranged on the bottom surface of the valve bottom shell to make the water in the water storage tank enter the hollow inner cavity, and an elastic valve sheet is arranged at the bottom of the valve support to make the water inlet hole communicated with the hollow inner cavity when the water pressure in the water storage tank is greater than the water pressure in the water supply pipe or to seal the water inlet hole when the water pressure in the water supply pipe is greater than the water pressure in the water storage tank.

[0010] The valve upper shell is an integral structure and is divided into three sections from top to bottom, i.e. an insertion section, a middle section and a connecting section, the insertion section is tubular and is inserted into the water supply pipe and sealingly connected thereto, the middle section comprises an outer section and a central section, the cross section of the outer section is in the shape of an "8" and the cross section of the central section is in the shape of an inverted trapezoid, the lower base of the trapezoid is open and communicated with the insertion section, the base plate is the upper base of the trapezoid, an annular water passing cavity is formed between the outer section and the central section, the water passing holes are arranged on the two waists of the trapezoid, and a positioning column is arranged on the lower surface of the base plate and extends downward, the connecting section is in the shape of a horn, the upper end of the connecting section is connected with the outer section of the middle section, and the lower end of the connecting section is connected with the valve bottom shell, the upper surface of the valve support is provided with a positioning hole into which the positioning column is inserted, and the depth of the positioning hole is greater than or equal to the length of the positioning column.

[0011] The one-way water valve comprises a valve upper shell, a valve bottom shell and a valve ball, the valve upper shell is tubular and has a hollow inner passage, the upper end of the valve upper shell is communicated with the water supply pipe, the hollow inner passage is divided into an upper section and a lower section, a ball blocking rib is arranged on the inner wall of the upper section of the hollow inner passage and extends downward and protrudes toward the axis of the hollow inner passage, the lower section is a columnar passage, the valve ball is arranged in the lower section, and the diameter of the valve ball is smaller than the diameter of the hollow inner passage of the lower section, the valve bottom shell is connected with the valve upper shell, a water inlet hole is arranged in the center of the valve bottom shell to make the water in the water storage tank enter the hollow inner cavity, a sealing gasket is arranged on the inner side of the water inlet hole and surrounds the water inlet hole, and the sealing gasket makes the water inlet hole communicated with the hollow inner passage when the water pressure in the water storage tank is greater than the water pressure in the water supply pipe or is pressed by the valve ball to seal the water inlet hole when the water pressure in the water supply pipe is greater than the water pressure in the water storage tank.

[0012] The ball blocking ribs are three.

[0013] The one-way water valve is composed of a valve upper shell, a valve middle shell and an anchor type plug arranged in the valve middle shell, the valve upper shell and the valve middle shell are both tubular with a hollow inner channel, the upper end of the valve upper shell is connected with the water supply pipe, the lower end of the valve upper shell is connected with the upper end of the valve middle shell, a bottom cylinder extending downward and in the shape of a hollow truncated cone is arranged on the inner side wall of the valve middle shell, the bottom of the bottom cylinder is a water inlet hole allowing water in the water storage tank to enter the hollow inner channel, the anchor type plug is separated from the water inlet hole when the water pressure in the water storage tank is greater than the water pressure in the water supply pipe or is pressed and sealed on the water inlet hole when the water pressure in the water supply pipe is greater than the water pressure in the water storage tank.

[0014] The anchor type plug is composed of a spherical cap or a conical head and a positioning middle shaft, a sealing gasket is inlaid on the outer circumferential wall of the head, the sealing gasket is between the inner wall of the bottom cylinder and the outer wall of the head when the head is inserted into the water inlet hole, a positioning shaft sleeve extending along the shell axis is arranged on the inner wall of the valve upper shell, and the upper end of the positioning middle shaft is inserted into the positioning shaft sleeve.

[0015] The one-way water valve is composed of a valve upper shell, a valve bottom shell and a rubber valve arranged in the valve upper shell in the shape of a conical tower, the valve upper shell is tubular with a hollow inner channel, the upper end of the valve upper shell is connected with the water supply pipe, the lower end of the valve upper shell is connected with the plate-shaped valve bottom shell, a water inlet hole allowing water in the water storage tank to enter the hollow inner channel is arranged on the valve bottom shell, the rubber valve is inverted and is arranged on the valve bottom shell and covers the water inlet hole, a water passing hole is arranged at the top end of the rubber valve, the water passing hole is opened when the water pressure in the water storage tank is greater than the water pressure in the water supply pipe or is closed when the water pressure in the water supply pipe is greater than the water pressure in the water storage tank.

[0016] A water supply system used in a pet water dispenser, comprising a water supply chamber arranged at the top of the dispenser and an impeller type water pump arranged in the water supply chamber, a water inlet and a water outlet are respectively arranged on the bottom plate and the side plate of the water supply chamber, the water inlet can pump water in a water storage tank arranged in the dispenser into the water supply chamber through a water supply pipe, and the water outlet can pump clean water in the water supply chamber into a pet water tray, characterized in that the lower end of the water supply pipe is provided with the water supply assembly of the application.

[0017] A pet water dispenser, comprising a pet water tray arranged at the top of the dispenser, a water storage tank arranged in the dispenser and a water supply system which can purify and disinfect water in the water storage tank and then pump the water into the pet water tray through a water pump, characterized in that the water supply system is the water supply system of the application.

[0018] The present application adopts the water supply system of centrifugal pump plus one-way water valve, can effectively prolong the service life of water supply system, adopts water quantity sensor, can automatically power off and remind under the condition of water shortage in water storage tank, adopts UV lamp sterilization, can make drinking water cleaner, at the same time, adopts multilayer filter water impurities (one-way water valve head filter, filter cotton filter), makes water quality further purified, adopts the cabinet and top cover made of stainless steel material, convenient for user to clean and long service life. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the schematic diagram of pet water dispenser of the present application.

[0020] Figure 2 It is Figure 1 The exploded view of water pump assembly and cabinet.

[0021] Figure 3 It is Figure 1 The exploded view of another angle.

[0022] Figure 4 It is Figure 1 The A-A sectional view in

[0023] Figure 5 It is Figure 4 The enlarged view of one-way water valve embodiment 1 of B part in

[0024] Figure 6 It is Figure 4 The schematic diagram of one-way water valve embodiment 2 of B part in

[0025] Figure 7 It is Figure 4 The schematic diagram of one-way water valve embodiment 3 of B part in

[0026] Figure 8 It is Figure 4 The schematic diagram of one-way water valve embodiment 4 of B part in

[0027] Figure 9 It is Figure 4 The enlarged schematic diagram of C part in

[0028] Figure 10 It is Figure 1 The exploded view of another angle.

[0029] The reference signs are as follows:

[0030] water pump 32, stator 321, rotor 322, impeller 323, UV lamp 33, water volume sensor 34, water supply chamber 35, open water channel 36, top seat chamber 37, water accumulation cavity 371, water inlet 372, water inlet pipe 373, overflow port 374, water outlet 375, bottom seat chamber 38, backflow pipe 381, bottom shell 39, pet water dispenser 4, cabinet 41, water storage tank 42, water tray 43, top cover 44, assembly hole 45, water filling channel 46, water cup 5, one-way water valve 100, upper valve shell 101, middle valve shell 102, bottom valve shell 103, hollow inner cavity 104, hollow inner passage 105, water passing hole 106, water inlet hole 107, bottom shell cover 108, filter cotton 109, valve support 110, base plate 111, positioning column 112, positioning hole 113, elastic thin valve sheet 114, valve ball 115, ball blocking rib 116, sealing gasket 117, bottom cylinder 118, anchor plug 119, head 120, sealing washer 121, positioning central shaft 122, positioning shaft sleeve 123, rubber valve 124, conical surface 125. DETAILED DESCRIPTION

[0031] The application discloses a novel water supply assembly 1 applied to a pet water dispenser 4, a water supply system 3 and a pet water dispenser 4 with the water supply system 3.

[0032] I. Water supply assembly 1

[0033] As shown in Figure 1 , Figure 4 - Figure 8 The water supply assembly 1 comprises a water supply pipe 2 and a one-way water valve 100. The upper end of the water supply pipe 2 is sealingly connected to a water supply chamber 35 located at the upper part of the water dispenser cabinet 41, and the one-way water valve 100 is assembled at the lower end of the water supply pipe 2 and immersed in the water storage tank 42 of the water dispenser. The one-way water valve 100 is arranged to smoothly lift the water in the water storage tank 42 to the water supply chamber 35 arranged at the top of the cabinet 41 when the water pump 32 (preferably the water pump 32 is an impeller 323 type water pump 32) arranged at the top of the water dispenser cabinet 41 is in operation, and the clean water in the water supply chamber 35 is injected into the water tray 43 of the water dispenser through the water outlet 375 arranged on the side wall of the water supply chamber 35.

[0034] After the water pump 32 stops working in standby state for a period of time after continuously supplying water to the water tray 43, the one-way water valve 100 can keep the water in the water supply pipe 2, that is, the water level in the water supply pipe 2 does not drop although the water pump 32 stops working, which provides the impeller 323 with water for the next time when the water pump 32 is started. When the water pump 32 is started, the impeller 323 in the water supply chamber 35 makes the water in the water supply pipe 2 flow upward, and the upward flowing water forms a negative pressure difference between the upper and lower ends of the water supply pipe 2, thereby opening the one-way water valve 100 and continuously absorbing the water in the water storage tank 42 into the water supply pipe 2.

[0035] The water supply assembly 1 has simple structure, stable water supply, low noise, and is not afraid of temporary power failure, and can automatically provide clean water for the water tray 43 when the pet owner is away for a long time.

[0036] The specific structure of the one-way water valve 100 in the water supply assembly 1 of the present application will be described in detail in the fourth section.

[0037] II. Water supply system 3:

[0038] 1. Structure

[0039] As shown in Figure 1 - Figure 3 , Figure 9 , Figure 10 , the water supply assembly 1 comprises a water supply chamber 35 arranged on the top of the water dispenser case 41, a water pump 32 (preferably an impeller 323 type water pump 32, also known as a centrifugal pump) installed in the water supply chamber 35, a main control circuit board 31, a UV lamp 33 (ultraviolet lamp) for disinfection and sterilization, a water return pipeline 381, and the water supply assembly 1.

[0040] A water dispenser top cover 44 is arranged on the top of the case 41, and an assembly hole 45 is arranged on the side of the top cover 44 (the other side of the top cover 44 can be used as a water tray 43), and a top seat chamber 37 and a bottom seat chamber 38 are arranged on the upper and lower parts of the assembly hole 45, respectively, and the top seat chamber 37 and the bottom seat chamber 38 are preferably assembled together by a buckle structure, and the space in the top seat chamber 37 constitutes a water accumulation cavity 371 for installing a water pumping device, and a water inlet 372 is arranged at the bottom of the water accumulation cavity 371, and a hard water inlet pipe 373 is arranged on the water inlet 372, and the water supply pipe 2 mentioned in the water supply assembly 1 of the present application is sleeved on the water inlet pipe 373.

[0041] The pump device is enclosed in a box, which comprises a main control circuit board 31 and a water pump 32 (including a stator 321, a rotor 322 and an impeller 323). The main control circuit board 31 is arranged on the inner side of the chamber cover plate above the water pump 32 in the box. The stator 321 and the rotor 322 of the water pump 32 are installed in the middle of the box. The other space in the box constitutes a water supply chamber 35. The cross-sectional shape of the water supply chamber 35 is "L" shape. An open water channel 36 is arranged on the bottom plate of the water supply chamber 35. The impeller 323 fixed to the lower end of the rotor 322 is arranged in the open water channel 36. When the pump device is placed in the water accumulation cavity 371, the open water channel 36 is arranged directly above the water inlet 372.

[0042] The main control circuit board 31, the stator 321 and the rotor 322 installed in the box are water-tightly separated from the water supply chamber 35. Only the impeller 323 installed at the end of the rotor 322 is arranged in the water in the water supply chamber 35.

[0043] A water outlet 375 is arranged at the upper position of the side plate of the water supply chamber 35. With the operation of the water pump 32, the impeller 323 pumps the water in the water supply chamber 35 out of the water outlet 375 into the water tray 43.

[0044] The UV lamp 33 is arranged in the water supply chamber 35 at the position behind the impeller 323 (the outlet end is behind and the inlet end is front with the impeller 323 as the boundary). The UV lamp 33 disinfects and sterilizes the purified water flowing to the water outlet 375.

[0045] The water amount sensor 34 is arranged near the water outlet 375 of the water supply chamber 35. The water amount sensor 34 indirectly judges the water level in the water storage tank 42 by detecting whether there is water in the water supply chamber 35. When the water level in the water storage tank 42 is lower than the position of the water inlet hole 107 of the one-way water valve 100 in the water supply assembly 1, the water pump 32 cannot suck the water in the water storage tank 42 into the water supply pipe 2. Thus, the water supply chamber 35 will be in the state of no water supply.

[0046] The top of the water accumulation cavity 371 of the top seat chamber 37 is provided with a surrounding rim extending to the periphery thereof. The surrounding rim is provided with an overflow port 374 for draining the excess water into the water storage tank 42 when the water in the water accumulation cavity 371 overflows the top of the cavity.

[0047] The bottom of the bottom seat chamber 38 is further provided with a bottom shell 39 assembled on the bottom seat chamber 38. The bottom shell 39 and the bottom plate of the bottom seat chamber 38 are provided with filter cotton 109 for filtering the impurities in the backflow water. The bottom shell 39 and the side wall of the bottom seat chamber 38 are provided with a backflow pipeline 381 for the backflow water in the water tray 43 flowing from the overflow port 374. The backflow water flows downward into the water storage tank 42 through the filter cotton 109.

[0048] The backflow pipeline 381 is water-tightly separated from the water supply chamber 35.

[0049] 2. Use

[0050] When using the water dispenser for the first time, pour clean water into the drinking tray 43 using the water cup 5 (other automatic water filling devices can also be used). Water that is higher than the water in the drinking tray 43 flows into the water accumulation chamber 371 through the water inlet channel 46 on the side of the drinking tray 43, and then into the water supply pipe 2 through the water accumulation chamber 371. Since the bottom of the water supply pipe 2 is equipped with a one-way valve 100 (which closes under the pressure of the water in the water supply pipe 2), after filling the water accumulation chamber 371 and the water supply pipe 2, place the box containing the pump device into the water accumulation chamber 371. The bottom of the box contacts the bottom of the water accumulation chamber 371. During the placement process, the water in the water accumulation chamber 371 enters the water supply chamber 35 through the open water channel 36 and the water level overflows the impeller 323 of the water pump 32. At this time, the water pump 32 is started. Under the rotation of the impeller 323, the water in the water supply chamber 35 is pumped out from the outlet 375, thereby creating a negative pressure difference (smaller at the top and larger at the bottom) between the upper and lower ends of the water supply pipe 2. Then, the one-way water valve 100 is opened. As the water pump 32 continues to operate, the water in the water storage tank 42 is continuously sucked into the water supply pipe 2.

[0051] When the water pump 32 stops working (whether it is manually set to stop water supply or a sudden power outage stops water supply), the impeller 323 stops rotating. At this time, the pressure difference between the upper and lower ends of the water supply pipe 2 is zero. The one-way water valve 100 located at the lower end of the water supply pipe 2 is closed by the gravity of the water remaining in the water supply pipe 2. Thus, the water in the water supply pipe 2 and the water supply chamber 35 will not be lost, ensuring that the impeller 323 is provided with a movable water medium when the water pump 32 starts next time.

[0052] 3. Pet Water Fountain 4

[0053] like Figure 1 - Figure 3 , Figure 10 As shown, the outer contour shape of the pet water fountain 4 of the present invention can be rectangular, cylindrical, or elliptical. It includes a housing 41, a water tray 43 for the pet to drink from, and the water supply system 3.

[0054] The casing 41 is equipped with a water storage tank 42 for storing a large amount of drinking water, and a top cover 44 is provided on the casing 41. The water supply system 3 is located on one side of the top cover 44.

[0055] The drinking tray 43 is slightly concave in the middle and has several overflow ports 374 on its sides. Excess water injected into the drinking tray 43 can flow back to the water storage tank 42 through the overflow port 374 and the return pipe 381.

[0056] The water dispenser is also equipped with a switch button for starting the water pump 32 and related indicator lights.

[0057] The pet water dispenser 4 has an attractive appearance. The impeller 323 type water pump 32 has the advantages of low noise, high pumping capacity and long service life. The water pump 32 is installed on the top of the machine case 41 away from the water storage container, so that the water pump 32 can effectively avoid the erosion of water on the rotor 322, the stator 321 and the related circuit board. The water flow structure used in the first water injection and overflow drainage can effectively prevent the pollution of clean water in the water storage chamber caused by backflow of excessive water injection during water supply to the water tray 43. In addition, after the pet water dispenser 4 is used to inject water into the water storage chamber and the water supply pipe 2 for the first time, the intermittent operation of the water pump 32 will not affect the normal water injection of the water supply system 3 to the water tray 43. The pet water dispenser 4 can automatically complete the operation of providing clean water to the water tray 43 when the pet owner is away for a long time.

[0058] Fourthly, the one-way water valve 100 in the water supply assembly 1 of the present application has the following preferred structures.

[0059] 1. Breathable membrane valve

[0060] As shown in Figure 4 , Figure 5 , the one-way water valve 100 is composed of a valve upper shell 101, a valve bottom shell 103 and a valve support 110. The valve upper shell 101 is in sealing connection with the valve bottom shell 103. After the valve upper shell 101 and the valve bottom shell 103 are combined, a hollow inner cavity 104 is formed therebetween, and the valve support 110 is arranged in the hollow inner cavity 104.

[0061] The valve upper shell 101 is an integral structure, which is divided into three sections from top to bottom, namely an insertion section, a middle section and a connecting section.

[0062] The insertion section is tubular, which is inserted into the water supply pipe 2 and in sealing connection with the water supply pipe 2.

[0063] The middle section is divided into an outer section and a central section from outside to inside. The outer section has a cross-sectional shape of an "8" character, and the central section has a cross-sectional shape of an inverted trapezoid. The upper ends of the outer section and the central section are connected to the lower end of the insertion section, and an annular water passage is formed between the outer section and the central section. The lower base of the trapezoid (the longer base of the trapezoid) is open and in communication with the insertion section, and the upper base of the trapezoid is a base plate (referred to as a base frame plate 111). A positioning column 112 extending downward is arranged on the lower surface of the base frame plate 111. Water passage holes 106 are arranged on the two sides of the trapezoid of the central section, which connect the hollow inner cavity 104 and the inner tube of the insertion section.

[0064] The connecting section is horn-shaped, the upper end of which is connected to the outer section of the middle section, and the lower end of which is connected to the valve bottom shell 103 (the connection can be ultrasonic welding or threaded connection).

[0065] The valve bottom shell 103 is arc-shaped in cross section, and has a water inlet hole 107 in the bottom surface thereof for allowing water in the water storage tank 42 to enter the hollow inner cavity 104. A bottom shell cover 108 is arranged below the valve bottom shell 103, and is of mesh structure. A filter cotton 109 for purifying and filtering the incoming water is arranged in the bottom shell cover 108.

[0066] The upper half of the valve support 110 is cylindrical, and the lower half thereof is arc-shaped in cross section. A positioning hole 113 is arranged in the top surface of the valve support 110, and is adapted to allow the positioning column 112 to be inserted therein. The positioning hole 113 is preferably a blind hole, and the depth of the positioning hole 113 is greater than or equal to the length of the positioning column 112. An elastic thin valve sheet 114 is arranged around the lower half of the valve support 110, and is annular and adapted to cover the water inlet hole 107 (the diameter of the elastic thin valve sheet 114 is greater than the diameter of the water inlet hole 107). When the water pressure in the water storage tank 42 is greater than the water pressure in the water supply pipe 2 (i.e. a negative pressure difference is formed between the upper and lower ends of the water supply pipe 2), the elastic thin valve sheet 114 is lifted upward by the upward water pressure, and thus the water inlet hole 107 is opened. As a result, the water in the water storage tank 42 flows into the water supply pipe 2 through the water inlet hole 107, the hollow inner cavity 104 and the water passing hole 106 in sequence (to achieve the purpose of water pumping). When the water pump 32 stops operating, the elastic thin valve sheet 114 is tightly attached to the water inlet hole 107 and seals the water inlet hole 107 under the downward water pressure of the water remaining in the water supply pipe 2. As a result, the water in the water supply pipe 2 remains in the pipe (to achieve the purpose of preventing the water in the water supply pipe 2 from leaking out).

[0067] 2. Float ball type water valve

[0068] As shown in Figure 4 , Figure 6 , the one-way water valve 100 is composed of a valve upper shell 101, a valve bottom shell 103 and a valve ball 115. The valve upper shell 101 is tubular and has a hollow inner passage 105. The upper end of the valve upper shell 101 is connected to the water supply pipe 2. The hollow inner passage 105 is divided into an upper segment and a lower segment. A plurality of ball blocking ribs 116 are arranged on the inner wall of the upper segment of the hollow inner passage 105, and preferably three ball blocking ribs 116. The ball blocking ribs 116 extend from top to bottom and protrude toward the axis of the hollow inner passage 105. The lower segment of the hollow inner passage 105 is a cylindrical passage. The valve ball 115 is arranged in the lower segment of the hollow inner passage 105. The diameter of the valve ball 115 is smaller than the diameter of the lower segment of the hollow inner passage 105, and greater than the diameter of a virtual annular hole enclosed by the lower ends of the plurality of ball blocking ribs 116. That is, when the valve ball 115 moves upward, it will be stopped by the ball blocking ribs 116. The space between adjacent two ball blocking ribs 116 is a water flow passage.

[0069] The valve bottom shell 103 is sealed to the valve upper shell 101, and various ways of connecting in the prior art can be used therebetween. A water inlet hole 107 is provided in the center of the valve bottom shell 103 to allow water in the water storage tank 42 to enter the hollow inner cavity 104, and a sealing gasket 117 is provided on the inner side of the water inlet hole 107.

[0070] When the water pressure in the water storage tank 42 is greater than the water pressure in the water supply pipe 2, the valve ball 115 floats upward (the valve ball 115 is blocked at the lower end of the ball blocking rib 116 as the upward flow of water is blocked), the water inlet hole 107 is opened, and the water in the water storage tank 42 flows into the water supply pipe 2 through the water inlet hole 107 and the hollow inner passage 105 (to achieve the purpose of pumping water); when the water pump 32 stops running, under the action of the gravity of the water remaining in the water supply pipe 2, the valve ball 115 is pressed downward by the water above and blocks on the sealing gasket 117, i.e. to block the water inlet hole 107, thereby allowing the water in the water supply pipe 2 to remain in the pipe (to achieve the purpose of preventing the water in the water supply pipe 2 from leaking out).

[0071] The valve ball 115 is preferably made of glass.

[0072] A bottom shell cover 108 is also provided below the valve bottom shell 103, which is a mesh structure, and a filter cotton 109 for purifying and filtering the incoming water is provided in the bottom shell cover 108.

[0073] 3. Boat anchor type water valve

[0074] As shown in Figure 4 , Figure 7 , the one-way water valve 100 is composed of a valve upper shell 101, a valve middle shell 102, a valve bottom shell 103, and an anchor type plug 119 provided in the valve middle shell 102.

[0075] The valve upper shell 101 and the valve middle shell 102 are both tubular with a hollow inner passage 105, the upper end of the valve upper shell 101 is connected to the water supply pipe 2, the lower end of the valve upper shell 101 is connected to the upper end of the valve middle shell 102, the lower end of the valve middle shell 102 is connected to the valve bottom shell 103, and the connection between the three can be sealed by various ways in the prior art, such as ultrasonic welding connection, screw thread connection, or male and female buckle connection with sealing ring.

[0076] A positioning shaft sleeve 123 extending to the shell axis is provided on the inner wall of the valve upper shell 101.

[0077] A bottom cylinder 118 converging to the shell axis and extending downward in a hollow circular truncated cone shape is provided on the inner side wall of the valve middle shell 102, and the cylinder bottom of the bottom cylinder 118 is open, which allows the water in the water storage tank 42 to enter the water inlet hole 107 in the hollow inner passage 105.

[0078] The valve bottom shell 103 is a mesh-structured plate shell, and a filter cotton 109 for purifying and filtering the incoming water is arranged on the valve bottom shell 103.

[0079] The anchor plug 119 is composed of a spherical cap or conical head 120 and a positioning shaft 122, and a sealing gasket 121 is inlaid on the outer circumferential wall of the head 120, and the upper end of the positioning shaft 122 is inserted into the positioning shaft sleeve 123.

[0080] When the water pressure in the water storage tank 42 is greater than the water pressure in the water supply pipe 2, the anchor plug 119 moves upward, the water inlet hole 107 is opened, and the water in the water storage tank 42 flows into the water supply pipe 2 through the water inlet hole 107 and the hollow inner passage 105 (to achieve the purpose of water pumping); when the water pump 32 stops running, under the action of the gravity of the water remaining in the water supply pipe 2, the anchor plug 119 is pressed downward by the water above, the head 120 of the anchor plug 119 is inserted into the water inlet hole 107 and the water inlet hole 107 is blocked by the sealing gasket 121, that is, the purpose of blocking the water inlet hole 107 is achieved, so that the water in the water supply pipe 2 remains in the pipe (to achieve the purpose of preventing the water in the water supply pipe 2 from leaking out).

[0081] 4. Duckbill water valve

[0082] As shown in Figure 4 , Figure 8 , the one-way water valve 100 is composed of a valve upper shell 101, a valve bottom shell 103, and a rubber valve 124 arranged in the valve upper shell 101 in a conical tower shape.

[0083] The valve upper shell 101 is tubular with a hollow inner passage 105, the upper end of the valve upper shell 101 is connected in communication with the water supply pipe 2, and the lower end of the valve upper shell 101 is connected with the plate-shaped valve bottom shell 103, the valve bottom shell 103 is provided with a water inlet hole 107 for allowing the water in the water storage tank 42 to enter the hollow inner passage 105, and the rubber valve 124 is invertedly buckled on the valve bottom shell 103 and covers the water inlet hole 107.

[0084] The rubber valve 124 is provided with an annular edge extending outwardly from the bottom, and the annular edge is clamped between the valve upper shell 101 and the valve bottom shell 103 to constrain the upward drift of the rubber valve 124. The water passing hole 106 is arranged at the top end of the rubber valve 124 (i.e. the position of the conical top).

[0085] When the water pressure in the water storage tank 42 is greater than the water pressure in the water supply pipe 2, the soft taper surface 125 of the rubber valve 124 expands upward, the water passage hole 106 is opened, and the water in the water storage tank 42 flows into the water supply pipe 2 through the water inlet hole 107, the water passage hole 106 and the hollow inner passage 105 (to achieve the purpose of pumping water); when the water pump 32 stops running, under the action of the gravity of the water remaining in the water supply pipe 2, the taper surface 125 of the rubber valve 124 collapses downward, the water passage hole 106 is squeezed to be closed, that is, to block the water inlet hole 107, thereby enabling the water in the water supply pipe 2 to remain in the pipe (to achieve the purpose of preventing the water in the water supply pipe 2 from leaking out).

Claims

1. A pet water fountain, comprising a main control circuit board (31), a drinking tray (43) for providing purified water to pets, a water storage tank (42) disposed within a casing (41), and a water supply system (3) that purifies and disinfects the water in the water storage tank (42) and pumps it into the drinking tray (43) via a water pump (32), characterized in that: The top cover (44) of the water dispenser is arranged on the top of the cabinet (41), and the water tray (43) is arranged on one side of the top cover (44). The other side of the top cover (44) is provided with an assembly hole (45), and the assembly hole (45) is provided with a top seat chamber (37). The space in the top seat chamber (37) constitutes a water accumulation cavity (371) for installing a pump water device. The pump water device is packaged in a box body which can be arranged in the water accumulation cavity (371). The water accumulation cavity (371) is provided with a water inlet (372) at the bottom. The water supply system (3) comprises a water pump (32) of the pump water device and a water supply chamber (35) arranged at the bottom of the box body. A water supply pipe (2) is vertically arranged in the water storage tank (42) and communicates with the water supply chamber (35). An open water channel (36) is connected between the water inlet (372) and a water outlet (375) of the water supply chamber (35) to deliver clean water to the water tray (43). The rotor (322) of the water pump (32) is vertically arranged in the box body. The impeller (323) of the water pump is immersed in water in the open water channel (36) and is located above the water inlet (372). The main control circuit board, the stator (321) and the rotor (322) arranged in the box body are water-tightly separated from the water supply chamber (35). A one-way water valve (100) is arranged at the lower end of the water supply pipe (2) to suck water in the water storage tank (42) into the water supply pipe (2) or to keep the water in the water supply pipe (2) when the water pump (32) is in operation. The one-way water valve (100) is opened when the impeller (323) rotates and pushes the water in the open water channel (36) to be discharged from the water outlet (375). The one-way water valve (100) is closed when the impeller (323) stops rotating.

2. The pet water fountain of claim 1, wherein: The one-way water valve (100) is composed of a valve upper shell (101), a valve bottom shell (103) and a valve support (110). The upper end of the valve upper shell (101) communicates with and is sealingly connected to the water supply pipe (2). The valve upper shell (101) is sealingly connected to the valve bottom shell (103), and a hollow inner cavity (104) is formed therebetween. The valve support (110) is arranged in the hollow inner cavity (104). A base plate (111) is arranged in the valve upper shell (101) and connected to the upper end of the valve support (110). Water passing holes (106) are arranged on both sides of the base plate (111) to communicate the hollow inner cavity (104) with the water supply pipe (2). A water inlet hole (107) is arranged on the bottom surface of the valve bottom shell (103) to allow water in the water storage tank (42) to enter the hollow inner cavity (104). An elastic valve sheet (114) is arranged at the bottom of the valve support (110) to communicate the water inlet hole (107) with the hollow inner cavity (104) when the water pressure in the water storage tank (42) is greater than the water pressure in the water supply pipe (2) or to seal the water inlet hole (107) when the water pressure in the water supply pipe (2) is greater than the water pressure in the water storage tank (42).

3. The pet water fountain of claim 2, wherein: The valve upper shell (101) is an integral structure, which is divided into three sections from top to bottom, namely, an insertion section, a middle section and a connecting section. The insertion section is tubular, which is inserted into the water supply pipe (2) and is sealedly connected therebetween. The middle section is divided into an outer section and a central section. The outer section is in the shape of an "8" in cross section, and the central section is in the shape of an inverted trapezoid in cross section. The lower base of the trapezoid is open and communicates with the insertion section. The base plate (111) is the upper base of the trapezoid. An annular water passing cavity is formed between the outer section and the central section. The water passing holes (106) are arranged on the two sides of the trapezoid. The lower surface of the base plate (111) is provided with a positioning column (112) extending downward. The connecting section is in the shape of a horn, the upper end of which is connected with the outer section of the middle section, and the lower end of which is connected with the valve bottom shell (103). The upper surface of the valve support column (110) is provided with a positioning hole (113) into which the positioning column (112) is inserted. The depth of the positioning hole (113) is greater than or equal to the length of the positioning column (112).

4. The pet water fountain of claim 1, wherein: The one-way water valve (100) is composed of a valve upper shell (101), a valve bottom shell (103) and a valve ball (115). The valve upper shell (101) is tubular and has a hollow inner channel (105). The upper end of the valve upper shell (101) is connected with the water supply pipe (2). The hollow inner channel (105) is divided into an upper section and a lower section. The inner wall of the upper section of the hollow inner channel (105) is provided with a ball blocking rib (116) extending downward and protruding toward the axis of the hollow inner channel (105). The lower section is a columnar channel. The valve ball (115) is arranged in the lower section. The diameter of the valve ball (115) is smaller than the diameter of the lower section of the hollow inner channel (105). The valve bottom shell (103) is connected with the valve upper shell (101). The central part of the valve bottom shell (103) is provided with a water inlet hole (107) through which the water in the water storage tank (42) enters the hollow inner cavity (104). The inner side of the water inlet hole (107) is provided with a sealing gasket (117) surrounding the water inlet hole (107) and being in communication with the hollow inner channel (105) when the water pressure in the water storage tank (42) is greater than the water pressure in the water supply pipe (2) or being pressed by the valve ball (115) to seal the water inlet hole (107) when the water pressure in the water supply pipe (2) is greater than the water pressure in the water storage tank (42).

5. The pet water fountain of claim 4, wherein: The ball blocking rib (116) is three.

6. The pet water fountain of claim 1, wherein: The one-way water valve (100) is composed of a valve upper shell (101), a valve middle shell (102) and an anchor plug (119) arranged in the valve middle shell (102), the valve upper shell (101) and the valve middle shell (102) are both tubular with a hollow inner channel (105), the upper end of the valve upper shell (101) is connected with the water supply pipe (2), the lower end of the valve upper shell (101) is connected with the upper end of the valve middle shell (102), a bottom cylinder (118) extending downward and in the shape of a hollow truncated cone is arranged on the inner side wall of the valve middle shell (102), the bottom of the bottom cylinder (118) is a water inlet hole (107) allowing water in the water storage tank (42) to enter the hollow inner channel (105), the anchor plug (119) is separated from the water inlet hole (107) when the water pressure in the water storage tank (42) is greater than the water pressure in the water supply pipe (2) or is pressed to seal the water inlet hole (107) when the water pressure in the water supply pipe (2) is greater than the water pressure in the water storage tank (42).

7. The pet water fountain of claim 6, wherein: The anchor plug (119) is composed of a spherical cap or conical head (120) and a positioning middle shaft (122), a sealing gasket (121) is inlaid on the outer circumferential wall of the head (120), the sealing gasket (121) is between the inner wall of the bottom cylinder (118) and the outer wall of the head (120) when the head (120) is inserted into the water inlet hole (107); a positioning shaft sleeve (123) extending toward the shell axis is arranged on the inner wall of the valve upper shell (101), the upper end of the positioning middle shaft (122) is inserted into the positioning shaft sleeve (123).

8. The pet water fountain of claim 1, wherein: The one-way water valve (100) is composed of a valve upper shell (101), a valve bottom shell (103) and a rubber valve (124) arranged in the valve upper shell (101) in the shape of a tapered tower, the valve upper shell (101) is tubular with a hollow inner channel (105), the upper end of the valve upper shell (101) is connected with the water supply pipe (2), the lower end of the valve upper shell (101) is connected with the plate-shaped valve bottom shell (103), a water inlet hole (107) allowing water in the water storage tank (42) to enter the hollow inner channel (105) is arranged on the valve bottom shell (103), the rubber valve (124) is inverted on the valve bottom shell (103) and covers the water inlet hole (107), a water passing hole (106) is arranged at the top end of the rubber valve (124), the water passing hole (106) is opened when the water pressure in the water storage tank (42) is greater than the water pressure in the water supply pipe (2) or is closed when the water pressure in the water supply pipe (2) is greater than the water pressure in the water storage tank (42).

Images