Water dispenser for pets

Abstract

The pet water dispenser is simple in structure, and a filtering device, a water supply device and a water pump rotor assembly can be rapidly taken out from a water tank during maintenance. A cylindrical vertical cylinder which is provided with a hollow cavity and extends from bottom to top is arranged in a water tank, a water outlet connected with a purified water nozzle is formed in the top end of the vertical cylinder, and a water inlet through which water in the water tank can enter the hollow cavity is formed in a bottom panel of the hollow cavity. A horizontal cylinder used for installing a rotor assembly of the water pump is arranged below the bottom panel, the horizontal cylinder is horizontally arranged and fixed below the bottom panel, the horizontal cylinder is divided into a wheel cavity used for installing an impeller and a rear cavity used for installing a rotor, a water suction opening is formed in the front end face of the wheel cavity, and a water inlet is formed in the top of the wheel cavity. The rotor assembly and the stator assembly of the water pump are of a transverse water-electricity separation type structure, the formed water dispenser product is thin, and the water outlet efficiency of the water pump can be improved. The rotor assembly, the filtering device and the water outlet pipe are integrated, and cleaning and replacement are convenient.

Description

Technical Field

[0001] The utility model relates to a pet drinking water machine, in particular to a pet drinking water machine in which a water supply system of a water pump and a driving system for driving a rotor to operate are separated and arranged with a casing as a boundary. Background Art

[0002] The pet drinking fountains currently available on the market (hereinafter referred to as drinking fountains) consist of a water tank and a water supply system. The water supply system includes a water pump, a water supply pipe, a nozzle and a water filter. Usually, the water pump is a submersible pump placed in the water tank. The water pumped out by the submersible pump is connected to the nozzle arranged on the cover of the drinking fountain through the lower water supply pipe, the water filter and the upper water supply pipe. The clean water sprayed by the nozzle is injected into the drinking basin for the pet to drink.

[0003] For example, in the Chinese patent (patent number: CN201822188946.1, named "Pet Drinking Fountain", application date: December 25, 2018), the water supply device, filter device and rotor assembly of the water pump can also be taken out from the water tank, but the setting structure of the rotor assembly is quite complicated, and the rotor is vertically arranged, and the water outlet direction of the impeller is horizontal, resulting in a slow water flow speed. At the same time, it is extremely inconvenient to clean and maintain it. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a pet drinking fountain with a simple structure, and a filter device, a water supply device and a water pump rotor assembly can be quickly taken out from a water tank during maintenance.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] The utility model provides a pet drinking fountain, comprising a water tank, a pet drinking tray and a water purification nozzle arranged on the top of the water tank, and is characterized in that: a vertical cylinder with a hollow cavity extending from bottom to top and in a columnar shape is provided in the water tank, a water filtering device is installed in the hollow cavity, a water outlet connected to the water purification nozzle is provided at the top of the vertical cylinder, a water inlet for allowing water in the water tank to enter the hollow cavity is provided on the bottom panel of the hollow cavity, a horizontal cylinder for installing a rotor assembly of a water pump is provided under the bottom panel, the horizontal cylinder is horizontally arranged and fixed below the bottom panel by a supporting body, the horizontal cylinder is divided from front to back into a wheel cavity for installing an impeller and a rear cavity for installing a rotor, a water suction port is provided on the front end surface of the wheel cavity, and the water inlet is arranged at the top of the wheel cavity.

[0007] The supporting body is a cylinder shell ear plate connected to the horizontal cylinder as a whole, and the cylinder shell ear plate is fixed to the lower surface of the bottom panel by screws, bonding, buckles or male-female matching connection structures.

[0008] A plurality of support columns are arranged at intervals around the bottom end of the vertical cylinder to stabilize the vertical cylinder in the water tank; or a sleeve is arranged on the outer wall of the upper part of the vertical cylinder to stabilize the vertical cylinder in the water tank and connected to the drinking water tray.

[0009] The supporting body is a bottom end cover connected to the horizontal cylinder as a whole, and the bottom end cover includes an end cover side wall and a bridge plate connected between the end cover side wall and the horizontal cylinder. The horizontal cylinder is located at the center of the bottom end cover, and the end cover side wall fixes the bottom end cover under the vertical cylinder by means of threads, screws, adhesives, snaps or male-female matching connection structures.

[0010] The side wall of the end cover extends downward to the vicinity of the lowest end of the horizontal cylinder, and there is an empty space between the cylinder wall of the horizontal cylinder and the side wall of the end cover.

[0011] The rear cavity is sealed and separated from the hollow cavity and the wheel cavity respectively. In the rear cavity, a front bearing and a rear bearing sleeved on the rotating shaft of the rotor are respectively arranged in front and behind the rotor. The front end of the rotating shaft passes through the front wall of the rear cavity and is fixedly connected to the impeller.

[0012] A boss protruding upward and made of non-magnetic material is provided on the bottom plate in the water tank. The boss consists of two hollow columns and a concave cavity connecting the bottoms of the two hollow columns and having an arc-shaped cross-section. The two hollow columns are a left column and a right column, respectively, and their upper ends are both closed ends. The periphery of the boss is sealed and connected to the bottom plate, and the distance between the left column and the right column is greater than or equal to the maximum outer diameter of the horizontal cylinder; the depth of the concave cavity is less than or equal to the maximum outer diameter of the horizontal cylinder and corresponds to the horizontal cylinder from top to bottom.

[0013] The stator assembly of the water pump consists of a "U"-shaped magnetic conductor and an excitation coil, which is installed on the lower surface of the boss. The magnetic conductor is divided into a left magnetic column, a right magnetic column and a bridge magnetic column connected between the left magnetic column and the right magnetic column. The excitation coil is wound on the bridge magnetic column; the left magnetic column and the right magnetic column are respectively inserted into the left column and the right column from bottom to top under the bottom plate.

[0014] A Hall sensor capable of detecting the rotation position of the rotor is arranged in the inner hollow space of the left column or the right column.

[0015] A base which is tightly buckled on the water tank is also provided at the bottom of the water tank, and the power supply wire of the excitation coil and the signal wire of the Hall sensor are led out through wire holes arranged on the side wall of the base.

[0016] The utility model integrates the water supply component and the filter device into an integrated structure, and the water pump control part is arranged on the base and is designed separately from the water supply component. The rotor assembly and the stator assembly of the water pump adopt a horizontal water-electric separation structure, and the thickness of the water dispenser product formed by the structure is relatively thin, and the water discharge efficiency of the water pump will be increased. At the same time, the rotor assembly is integrated with the filter device and the water outlet pipe, so that the water basin structure is simple and convenient for cleaning and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a schematic diagram of the appearance of a pet water dispenser.

[0018] Figure 2 for Figure 1 Schematic diagram of the decomposition.

[0019] Figure 3 for Figure 1 AA section view.

[0020] Figure 4 for Figure 1 BB section view.

[0021] Figure 5 for Figure 1 BB-direction sectional stereoscopic schematic diagram.

[0022] Figure 6 for Figure 2 Enlarged schematic diagram of the neutral tube.

[0023] Figure 7 for Figure 1 Schematic diagram of the mid-bottom end cover snapping together with the base.

[0024] Figure 8 for Figure 7 CC section view.

[0025] Fig. 9 for Figure 3 Enlarged schematic diagram of part D in the middle.

[0026] Fig.10 Schematic diagram of a vertical tube with supporting legs.

[0027] Fig.11 A schematic diagram of a vertical cylinder with a sleeve.

[0028] Fig.12 Circuit diagram for driving the stator assembly.

[0029] The reference numerals are as follows:

[0030] Drinking machine 1, water tank 11, drinking water tray 12, water purification nozzle 13, water filter device 14, water hole 15, water outlet 16 、Bottom plate 17, vertical tube 2, top panel 21, bottom panel 22, water inlet 23, support column 24 、 Sleeve 25, horizontal cylinder 3, wheel cavity 31, rear cavity 32, pressure cover 33, water suction port 34, rotor assembly 4, rotating shaft 41, impeller 42, rotor 43, front bearing 44, rear bearing 45, boss 5, left column 51, right column 52, concave cavity 53, bottom end cover 6, end cover side wall 61, bridge plate 62, stator assembly 7, left magnetic column 71, right magnetic column 72, bridge magnetic column 73, excitation coil 74, base 8. DETAILED DESCRIPTION

[0031] like Figure 1-Figure 11 As shown, the pet drinking fountain of the present invention is used to provide clean drinking water for pets, and includes a water tank 11, a pet drinking tray 12 arranged on the top of the water tank 11, a water purification nozzle 13 arranged above the pet drinking tray 12 and spraying water into the pet drinking tray 12, a water filter device 14 and a water pump that presses the water in the water tank 11 toward the water purification nozzle 13.

[0032] One of the main features of this utility model:

[0033] A cylindrical vertical cylinder 2 is provided in a water tank 11. The vertical cylinder 2 has a hollow cavity filled with water filtering material. A water outlet 16 connected to a water purification nozzle 13 is provided at the top of the vertical cylinder 2. A water inlet 23 is provided on a bottom panel 22 of the vertical cylinder 2 so that water in the water tank 11 can enter the hollow cavity. A horizontal cylinder 3 protruding downward and having an axial cavity is provided under the bottom panel 22. The rotor assembly 4 of the water pump is installed in the axial cavity. The horizontal cylinder 3 is horizontally arranged and fixed below the bottom panel 22 through a supporting body. The axial cavity is from front to back (with Figure 4 Taking the paper direction as an example, the left direction is the front, the right direction is the back, the inside direction is the left, and the outside direction is the right) is divided into a wheel cavity 31 for installing the impeller 42 and a rear cavity 32 for installing the rotor 43. A water suction port 34 is provided on the front end surface of the wheel cavity 31, and the water inlet 23 is provided at the top of the wheel cavity 31. The water in the water tank 11 is sprayed out by the water purification nozzle 13 through the water suction port 34, the wheel cavity 31, the water inlet 23, the water filter material in the hollow cavity and the water outlet 16 in sequence.

[0034] The above structure allows the vertical cylinder 2 and the rotor assembly 4 to be taken out from the water tank 11 together when the water tank 11 is cleaned, which greatly facilitates the cleaning of the vertical cylinder 2 and the maintenance of the rotor assembly 4 .

[0035] The second main feature of this utility model:

[0036] The utility model provides a boss 5 protruding upward and made of non-magnetic conductive material on the bottom plate 17 of the water tank 11. The lower surface of the boss 5 is a hollow concave-convex structure and the opening of the concave-convex structure points to the outside of the water tank 11. The boss 5 can be a structure formed integrally with the bottom plate 17 of the water tank 11, or a separately made component, and then fixed to the bottom plate 17 through a conventional connection structure. A space for accommodating the horizontal cylinder 3 is provided on the boss 5, and an excitation coil 74 assembly that can generate a drive to rotate the rotor 43 in the rotor assembly 4 is assembled in the concave-convex structure on the lower surface of the boss 5.

[0037] The above structure can separate the rotor assembly 4 and the stator assembly 7 of the water pump in terms of water and electricity, which not only effectively solves the problem that the stator assembly 7 is set in the water in the water tank 11 and is prone to short circuit, but also due to the above plug-and-play structure, the rotor assembly 4 and the stator assembly 7 can be conveniently separated structurally, which greatly simplifies the maintenance of the rotor assembly 4 and the stator assembly 7, that is, the rotor assembly 4 or the stator assembly 7 can be maintained separately as needed.

[0038] The structure of the pet drinking fountain 1 of the present invention will be described in detail below with reference to the accompanying drawings.

[0039] 1. Water tank 11

[0040] like Figure 1-Figure 5 As shown, the container for storing clean water may have a circular or polygonal cross-sectional shape, and includes box side walls and a bottom plate 17, with an open top surface and a top cover disposed on the top surface. The top cover may be disposed separately or may be a pet water tray 12. The preferred top cover of the utility model is a pet water tray 12.

[0041] 2. Pet water tray 12

[0042] like Figure 1-Figure 5 As shown, it is used to hold clean water sprayed by the clean water nozzle 13 for pets to drink. It is provided with an overflow port for returning water with a higher liquid level to the water tank 11 and a mounting hole for assembling the clean water nozzle 13.

[0043] 3. Vertical tube 2

[0044] like Figure 2-Figure 6 , Fig.10 , Fig.11 As shown, it is a cylinder with a hollow cavity, and its cross-sectional shape can be circular, elliptical, rectangular or regular polygonal, preferably circular, and its height extends upward from the bottom of the water tank 11 to the lower surface of the pet drinking water tray 12.

[0045] The hollow cavity is filled with water filter material. The utility model preferably uses a pre-made water filter device 14 as the water filter material, which includes a filter shell and a material filled in the shell that can filter impurities in the water. The cross-sectional shape of the filter shell is the same as the cross-sectional shape of the hollow cavity. A plurality of water holes 15 are provided on the top plate and the bottom plate of the filter shell. A plurality of brackets extending from the cavity wall to the cavity center are provided in the hollow cavity, and the water filter device 14 is placed on the brackets.

[0046] The upper and lower end faces of the vertical tube 2 are closed faces, and a water outlet 16 is provided on its top panel 21, which can be directly connected to the water purification nozzle 13, or connected to the water purification nozzle 13 through a middle connecting pipe; a water inlet 23 is provided on its bottom panel 22, and the water inlet 23 is the necessary passage for the water in the water tank 11 to enter the hollow cavity.

[0047] 4. Horizontal cylinder 3

[0048] like Figure 3-Figure 6 , Fig.10 , Fig.11 As shown, as mentioned above, it is arranged under the bottom panel 22 of the vertical cylinder 2. As mentioned above, it is used to install the rotor assembly 4 of the water pump, wherein the axial cavity includes a wheel cavity 31 and a rear cavity 32, and the rear cavity 32 is preferably water-sealed and separated from the wheel cavity 31 and the hollow cavity of the vertical cylinder 2 respectively.

[0049] The rotating shaft 41 in the rotor assembly 4 and the rotor 43, the front bearing 44 and the rear bearing 45 respectively sleeved on the rotating shaft 41 are arranged in the rear cavity 32. The front end of the rotating shaft 41 passes through the front wall of the rear cavity 32 (which can be a sealing cover with an axial hole, which can be called the rear cavity 32 sealing cover) and is fixedly connected with the impeller 42 installed in the wheel cavity 31. The rear wall of the rear cavity 32 is a closed surface. The front bearing 44 and the rear bearing 45 are respectively arranged on the front and rear sides of the rotor 43. A pressure cover 33 with the water suction port 34 and capable of closing the wheel cavity 31 is provided at the front end of the wheel cavity 31.

[0050] The preferred rotor 43 of the present invention is made of ferromagnetic material, and the N pole and S pole are symmetrically arranged along the radial direction of the rotor 43 with the rotating shaft 41 as the axis. The front bearing 44 and the rear bearing 45 can be made of waterproof materials, such as plastic parts, stainless alloy steel materials, etc.

[0051] In this structure, the rotating surface of the impeller 42 is perpendicular to the horizontal section of the vertical tube 2, and the high water pressure area formed by the rotation of the impeller 42 is opposite to the water inlet 23 in upper and lower directions. The impeller 42 sucks the water in the water tank 11 into the wheel cavity 31 through the water suction port 34 and presses it into the hollow cavity from bottom to top (i.e., vertical direction) through the water inlet 23. Compared with the horizontal water outlet structure of the impeller 42, this design has a higher water outlet efficiency due to its small water flow resistance (when the impeller 42 water outlet structure is horizontal, the water flow needs to change direction during the upward flow process, and obstacles need to be set up to change direction. Therefore, part of the kinetic energy of the water will be consumed, slowing down its flow rate).

[0052] The following structures are preferably used for the arrangement of the horizontal cylinder 3 of the present invention:

[0053] 1) It is formed integrally with the bottom panel 22. When installing the rotor assembly 4, the pressure cover 33 can be opened, and the front bearing 44, the rotor 43 and the rear bearing 45 pre-mounted on the rotating shaft 41 are first installed into the rear cavity 32, and the sealing cover of the rear cavity 32 is installed (when the bearing and the rotor 43 do not need to be waterproof, the sealing cover of the rear cavity 32 can also be omitted), and then the impeller 42 is sleeved on the front end of the rotating shaft 41, and then the pressure cover 33 is sealed on the cavity opening of the wheel cavity 31.

[0054] In order to make the stand 2 stand stably in the water tank 11, a plurality of support columns 24 (also called support feet, see FIG. 1 ) are arranged at intervals around the bottom end of the stand 2 to stabilize the stand 2 in the water tank 11. Fig.10 ), the number of support columns 24 is preferably 3-5, which are evenly spaced along the periphery of the vertical tube 2.

[0055] A sleeve 25 (see FIG. 2 ) which can stabilize the vertical cylinder 2 in the water tank 11 and connect to the water tray 12 can also be provided on the outer wall of the upper part of the vertical cylinder 2. Fig.11 ), the sleeve 25 and the vertical cylinder 2 can be movably connected, and the sleeve 25 is arranged on the pet drinking water tray 12 with an elastic and retractable structure. When the vertical cylinder 2 needs to be installed, the sleeve 25 is lifted up, and after the vertical cylinder 2 is placed in place, the sleeve 25 is released and connected to the outer wall of the vertical cylinder 2. The inner diameter of the sleeve 25 is slightly larger than the outer diameter of the vertical cylinder 2, and the difference is 1.0mm-3.0mm.

[0056] 2) The horizontal cylinder 3 is fixed to the lower surface of the bottom panel 22 through the cylinder shell ear plate (i.e., the supporting body) connected thereto as one body, and the method of installing the rotor assembly 4 is the same as that described in the previous point "1)".

[0057] The shell ear plate is fixed to the lower surface of the bottom panel 22 by screws, adhesive, snaps or a male-female matching connection structure.

[0058] Similarly, in this structure, in order to enable the vertical tube 2 to stand stably in the water tank 11, the support column 24 or the sleeve 25 mentioned in the above point "1)" is also provided.

[0059] 3) If Figure 3-6 , Fig. 9 As shown, the horizontal cylinder 3 is arranged under the bottom panel 22 of the vertical cylinder 2 through a bottom end cover 6 (i.e., a supporting body) connected thereto as an integral body.

[0060] The bottom end cover 6 includes an end cover side wall 61, the horizontal cylinder 3 and a bridge plate 62 connected between the end cover side wall 61 and the horizontal cylinder 3. Preferably, the cross-sectional shape of the end cover side wall 61 is the same as the cross-sectional shape of the vertical cylinder 2. The horizontal cylinder 3 is located at the center of the bottom end cover 6 and below the bridge plate 62. That is, relative to the bridge plate 62, the horizontal cylinder 3 is a circular cylinder protruding downward; a section of the bridge plate 62 connected to the horizontal cylinder 3 is a straight plate, and a section connected to the end cover side wall 61 is a panel inclined outward from top to bottom.

[0061] The end cover side wall 61 extends downward and outward, and its lowest point is located near the lowest end of the horizontal cylinder 3. The space between the cylinder outer wall of the horizontal cylinder 3 and the end cover side wall 61 is a hollow space.

[0062] The end cover side wall 61 fixes the bottom end cover 6 on the vertical tube 2 through threads, screws, adhesive, snaps or male-female matching connection structures.

[0063] When the stand 2 is placed in the water tank 11 , the end cover side wall 61 of the bottom end cover 6 plays a role in making the stand 2 stand stably on the bottom plate 17 of the water tank 11 .

[0064] 5. Boss 5

[0065] 1) Hollow columns and concave cavities 53

[0066] like Figure 7-Figure 9 As shown, an upwardly protruding boss 5 is provided on the bottom plate 17 in the water tank 11 at a position opposite to the horizontal cylinder 3. The boss 5 is made of non-magnetic material and can be integrally formed with the bottom plate 17 of the water tank 11, or it can be a separately produced component and then water-tightly fixed to the bottom plate 17.

[0067] When the boss 5 and the bottom plate 17 are an integrally formed structure, the bottom plate 17 is preferably a separate component from the water tank 11, and the bottom plate 17 is installed at the bottom of the water tank 11 through a conventional water-tight connection structure, such as a threaded plus sealing ring connection structure or a flange plus sealing ring connection structure.

[0068] When the boss 5 and the bottom plate 17 are separate structures, a hole can be opened at a set position in the bottom plate 17 first, and then the boss 5 as an independent component is connected to the bottom plate 17 by a connection structure with a sealing gasket.

[0069] The boss 5 is composed of two hollow columns and a concave cavity 53 that connects the bottoms of the two hollow columns together and has an arc-shaped bottom cross-section. The two hollow columns are arranged opposite to each other, namely a left column 51 and a right column 52. The utility model preferably has the opposite surfaces of the two columns as vertical surfaces, and the outer side surfaces of the two columns are inclined surfaces extending outward and downward from top to bottom, and the inclined surfaces are connected to the bottom plate 17.

[0070] The upper end surfaces of the two columns are both closed ends, and the lower surface of the boss 5 is the concave-convex structure, which is an open structure pointing outside the water tank 11, that is, the upper surface of the boss 5 is placed in the water tank 11, and its lower surface is in the environment outside the water tank 11.

[0071] The distance between the left column 51 and the right column 52 is slightly greater than or equal to the maximum outer diameter of the horizontal cylinder 3. When it is greater than the maximum outer diameter of the horizontal cylinder 3, the difference is preferably 0.5mm-1.0mm. The specific value is suitable for the horizontal cylinder 3 to be inserted into the concave cavity 53 without shaking left and right.

[0072] The depth of the concave cavity 53 is less than or equal to the maximum outer diameter of the horizontal cylinder 3 . The specific depth is preferably such that when the horizontal cylinder 3 is inserted into the concave cavity 53 , the rotor 43 in the rotor assembly 4 in the horizontal cylinder 3 is completely placed in the space enclosed by the left column 51 and the right column 52 .

[0073] 2) Stator assembly 7

[0074] like Figure 2-Figure 5 , Figure 8 , Fig. 9 As shown, the stator assembly 7 of the water pump is composed of a "U"-shaped magnetic conductor and an excitation coil 74. The magnetic conductor is preferably composed of a plurality of stacked silicon steel sheets. The entire stator assembly 7 is installed in the concave-convex structure on the lower surface of the boss 5, which is separated from the water in the water tank 11, can effectively avoid leakage of the water pump, has good safety performance, and is easy to maintain.

[0075] The magnetic conductor is divided into a left magnetic column 71, a right magnetic column 72 and a bridge magnetic column 73 connected between the left magnetic column 71 and the right magnetic column 72. The excitation coil 74 is wound on the bridge magnetic column 73, and the left magnetic column 71 and the right magnetic column 72 are placed at the left and right ends of the excitation coil 74. The turn plane of the excitation coil 74 is perpendicular to the bridge magnetic column 73. The left magnetic column 71 and the right magnetic column 72 are inserted into the left column 51 and the right column 52 from the bottom to the top from the lower surface of the boss 5. After the excitation direct current is connected to the excitation coil 74, the direction of the magnetic field generated by the excitation coil 74 points from the N pole to the S pole along the magnetic conductor, changing the direction of the excitation direct current so that the N pole and the S pole are switched between the left column 51 and the right column 52.

[0076] A Hall sensor capable of detecting the rotation position of the rotor 43 is disposed in the inner hollow space of the left column 51 or the right column 52 .

[0077] A base 8 is provided under the bottom plate 17 of the water tank 11 and is tightly buckled on the water tank 11. The base 8 is fixed to the water tank 11 by screws or a buckle connection structure. When the base 8 is installed on the water tank 11, the stator assembly 7 is enclosed in a closed space formed by the base 8 and the bottom plate 17 of the water tank 11.

[0078] The power supply wire of the excitation coil 74 and the signal wire of the Hall sensor are led out from the wire hole arranged on the side wall of the base 8.

[0079] In order to ensure that the relative position between the stator assembly 7 and the rotor assembly 4 remains unchanged, the stator assembly 7 can be fixed by potting glue, and can be fixed on the inner bottom surface of the base 8 or on the lower surface of the bottom plate 17 of the water tank 11.

[0080] 6. Installation and working process of the utility model

[0081] 1) Installation

[0082] In the first step, the stator assembly 7 is fixedly mounted on the boss 5, and then the base 8 is fixedly connected to the water tank 11. The working power line and signal line of the stator assembly 7 are connected to the main control circuit board of the pet water dispenser 1 (which can be arranged in the base 8 or on the outer wall of the water tank 11), and then the power connection line is led out from the wire hole on the base 8 and connected to the external plug.

[0083] In the second step, the rotor assembly 4 is installed in the wheel cavity 31 and the rear cavity 32 of the horizontal cylinder 3 .

[0084] In the third step, the vertical cylinder 2 with the water filter device 14 is installed in the water tank 11 in such a way that the horizontal cylinder 3 thereon is inserted into the concave cavity 53 of the boss 5, and then the water purification nozzle 13 is installed on the water outlet 16 of the vertical cylinder 2.

[0085] The fourth step is to stably stand the vertical cylinder 2 in the water tank 11 by means of a stabilizing component, and then cover the pet drinking water tray 12 .

[0086] 2) Working process

[0087] In the first step, water is poured into the water tank 11 from the overflow port on the pet water tray 12 until the liquid level reaches a set position.

[0088] The second step is to turn on the power of the stator assembly 7 so that the excitation coil 74 generates a magnetic field, thereby forming a constant magnetic field pointing from left to right or from right to left between the left magnetic column 71 and the right magnetic column 72 respectively. At this time, the rotor 43 placed in the constant magnetic field rotates.

[0089] In the third step, when the rotor 43 rotates nearly 180 degrees, the Hall sensor collects the position signal of the rotor 43 and sends the signal to the main control circuit of the pet water dispenser. The main control circuit changes the direction of the excitation DC, thereby changing the direction of the constant magnetic field. In this way, under the dual effects of the rotational inertia of the rotor 43 and the change in the direction of the magnetic field, the rotor 43 drives the impeller 42 to rotate continuously in one direction (see Fig.12 ).

[0090] In the fourth step, as the rotor 43 rotates, the impeller 42 pushes the water in the water tank 11 into the wheel cavity 31 through the water suction port 34 and then into the filtering device through the water inlet 23 , and then is sprayed out from the water outlet 16 and the water purification nozzle 13 .

Claims

1. A pet drinking fountain, comprising a water tank (11), a pet drinking tray (12) and a water purification nozzle (13) arranged on the top of the water tank (11), characterized in that: A vertical cylinder (2) having a hollow cavity and extending from bottom to top and in a columnar shape is provided in the water tank (11). A water filter device (14) is installed in the hollow cavity. A water outlet (16) connected to a water purification nozzle (13) is provided at the top of the vertical cylinder (2). A water inlet (23) is provided on the bottom panel (22) of the hollow cavity so that water in the water tank (11) can enter the hollow cavity. A horizontal cylinder (3) for installing a rotor assembly (4) of a water pump is provided below the bottom panel (22). The horizontal cylinder (3) is horizontally arranged and fixed below the bottom panel (22) through a supporting body. The horizontal cylinder (3) is divided from front to back into a wheel cavity (31) for installing an impeller (42) and a rear cavity (32) for installing a rotor (43). A water suction port (34) is provided on the front end surface of the wheel cavity (31). The water inlet (23) is arranged at the top of the wheel cavity (31).

2. The pet drinking fountain according to claim 1, characterized in that: The supporting body is a shell ear plate connected to the horizontal cylinder (3) as a whole, and the shell ear plate is fixed to the lower surface of the bottom panel (22) by means of screws, adhesive, buckles or male-female matching connection structures.

3. The pet drinking fountain according to claim 2, characterized in that: A plurality of support columns (24) are arranged at intervals around the bottom end of the vertical cylinder (2) to stabilize the vertical cylinder (2) in the water tank (11); or a sleeve (25) is arranged on the outer wall of the upper part of the vertical cylinder (2) to stabilize the vertical cylinder (2) in the water tank (11) and to be connected to the water tray (12).

4. The pet drinking fountain according to claim 1, characterized in that: The supporting body is a bottom end cover (6) connected to the horizontal cylinder (3) as a whole, the bottom end cover (6) comprising an end cover side wall (61) and a bridge plate (62) connected between the end cover side wall (61) and the horizontal cylinder (3), the horizontal cylinder (3) is located at the center of the bottom end cover (6), and the end cover side wall (61) fixes the bottom end cover (6) below the vertical cylinder (2) by means of a thread, a screw, a glue, a buckle or a male-female matching connection structure.

5. The pet drinking fountain according to claim 4, characterized in that: The end cover side wall (61) extends downward to the vicinity of the lowest end of the horizontal cylinder (3), and an empty space is provided between the cylinder wall of the horizontal cylinder (3) and the end cover side wall (61).

6. The pet drinking fountain according to claim 3 or 5, characterized in that: The rear cavity (32) is sealed and separated from the hollow cavity and the impeller cavity (31), and a front bearing (44) and a rear bearing (45) sleeved on the rotating shaft (41) of the rotor (43) are respectively provided in the rear cavity (32) at the front and rear of the rotor (43), and the front end of the rotating shaft (41) passes through the front wall of the rear cavity (32) and is fixedly connected to the impeller (42).

7. The pet drinking fountain according to claim 6, characterized in that: A boss (5) protruding upward and made of non-magnetic material is provided on the bottom plate (17) in the water tank (11). The boss (5) consists of two hollow columns and a concave cavity (53) connecting the bottoms of the two hollow columns and having a circular arc cross-section. The two hollow columns are respectively a left column (51) and a right column (52), and their upper ends are both closed ends. The periphery of the boss (5) is sealedly connected to the bottom plate (17). The distance between the left column (51) and the right column (52) is greater than or equal to the maximum outer diameter of the horizontal cylinder (3); the depth of the concave cavity (53) is less than or equal to the maximum outer diameter of the horizontal cylinder (3) and corresponds to the horizontal cylinder (3) from top to bottom.

8. The pet drinking fountain according to claim 7, characterized in that: The stator assembly (7) of the water pump is composed of a "U"-shaped magnetic conductor and an excitation coil (74), which is installed on the lower surface of the boss (5). The magnetic conductor is divided into a left magnetic column (71), a right magnetic column (72) and a bridge magnetic column (73) connected between the left magnetic column (71) and the right magnetic column (72). The excitation coil (74) is wound on the bridge magnetic column (73); the left magnetic column (71) and the right magnetic column (72) are respectively inserted from the bottom to the top into the left column (51) and the right column (52) under the bottom plate (17).

9. The pet drinking fountain according to claim 8, characterized in that: A Hall sensor capable of detecting the rotational position of the rotor (43) is arranged in the inner hollow space of the left column (51) or the right column (52).

10. The pet drinking fountain according to claim 9, characterized in that: A base (8) is also provided at the bottom of the water tank (11) and is tightly buckled onto the water tank (11). The power supply wire of the excitation coil (74) and the signal wire of the Hall sensor are led out through a wire hole provided on the side wall of the base (8).

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