Filtering apparatus for fish tank, and fish tank

Abstract

A filtering apparatus for a fish tank comprises a tank body and a three-way valve. The tank body comprises a filter material compartment and a device compartment, a filter material for filtering being contained in the filter material compartment, and a water pump being arranged in the device compartment. The three-way valve is provided with three pipe openings, which are respectively a first pipe opening, a second pipe opening and a third pipe opening; the filter material compartment is provided with a first water inlet and a first water outlet; and the device compartment is provided with a second water inlet and a second water outlet, the second pipe opening being in communication with the first water outlet, the third pipe opening being in communication with the second water inlet, and a water discharge port of the water pump being in communication with the second water outlet. The filtering apparatus for the fish tank can separately maintain the filter material and a mechanical apparatus, thereby preventing water from overflowing to wet nearby articles when the filter material or the mechanical apparatus is replaced.

Description

Filter device of fish tank and fish tank

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on July 21, 2023, with application number 202321927823.X and title “A Filtering Device for a Fish Tank”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application belongs to the technical field of aquarium breeding equipment, and in particular relates to a filter device for a fish tank and a fish tank. Background Art

[0003] To ensure good water quality within a fish tank, it's often equipped with a filtration system. Currently, commonly used filtration devices house the filter media and the mechanical device in the same compartment, making them difficult to maintain separately. To replace either the filter media or the mechanical device, the filtration device must be opened. The compartment is filled with water, and opening the filter can easily cause the water to overflow and wet nearby items.

[0004] Summary of the Invention

[0005] In response to the deficiencies in the related art, the present application provides a filter device for a fish tank and a fish tank.

[0006] A first aspect of the present application provides a filter device for a fish tank, comprising a housing and a three-way valve;

[0007] The box body includes a filter material compartment and an equipment compartment, wherein the filter material compartment is used to install the filter material, and the equipment compartment is equipped with a water pump;

[0008] The three-way valve has three pipe openings, which are used to close one pipe opening and connect the other two pipe openings;

[0009] The three pipe openings are respectively a first pipe opening, a second pipe opening and a third pipe opening;

[0010] The filter material compartment is provided with a first water inlet and a first water outlet, and the equipment compartment is provided with a second water inlet and a second water outlet;

[0011] The second pipe opening is connected to the first water outlet, the third pipe opening is connected to the second water inlet, and the drain outlet of the water pump is connected to the second water outlet.

[0012] In some embodiments of the first aspect, the first water inlet is used to connect to the water inlet pipe to send the water in the fish tank body into the filter material compartment; the second water outlet is used to connect to the water outlet pipe to send the water in the equipment compartment back to the fish tank body.

[0013] In some embodiments of the first aspect, when filtering is performed, the first pipe port of the three-way valve is closed and the second pipe port and the third pipe port are connected, so that the water in the cylinder body enters the filter material compartment through the first water inlet for filtration, flows into the three-way valve through the first water outlet and the second pipe port, then flows into the equipment compartment through the third pipe port and the second water inlet, and is finally pumped back into the cylinder body by the water pump through the second water outlet.

[0014] In some embodiments of the first aspect, when performing equipment compartment maintenance, the second pipe port of the three-way valve is closed and the first pipe port and the third pipe port are connected, and the water in the equipment compartment enters the three-way valve through the second water inlet and the third pipe port, and is discharged to the outside of the filter device through the first pipe port, thereby draining the water in the equipment compartment.

[0015] In some embodiments of the first aspect, when performing filter material compartment maintenance, the third pipe port of the three-way valve is closed and the first pipe port and the second pipe port are connected, the water in the filter material compartment enters the three-way valve through the first water outlet and the second pipe port, and is discharged to the outside of the filter device through the first pipe port, thereby draining the water in the filter material compartment.

[0016] In some embodiments of the first aspect, the filter material compartment and the equipment compartment are integrally connected to form the box body, a mounting groove is provided on the bottom surface of the box body, and the three-way valve is installed on the box body and is located in the mounting groove.

[0017] In some embodiments of the first aspect, the mounting groove is located below the equipment compartment, and the bottom surface of the filter material compartment is lower than the bottom surface of the equipment compartment, the top surface and side surfaces of the mounting groove correspond to the bottom surface of the equipment compartment and the side walls of the filter material compartment, respectively, and the first water outlet and the second water inlet are respectively located on the top surface and side surfaces of the mounting groove.

[0018] In some embodiments of the first aspect, a heating rod is installed in the equipment compartment, one end of the heating rod has an end cover, the equipment compartment is provided with an assembly port, the heating rod enters the equipment compartment through the assembly port, and the end cover is installed on the assembly port to close it.

[0019] In some embodiments of the first aspect, a grid plate is installed in the filter material compartment, the first water inlet and the first water outlet are respectively located on both sides of the grid plate, and the grid plate is used to install the filter material.

[0020] In some embodiments of the first aspect, the first pipe opening is connected to a pressure-applying device, and the pressure-applying device can apply pressure to the interior of the filter material compartment through the first pipe opening.

[0021] A second aspect of the present application provides a fish tank, comprising a tank body and a filter device for the fish tank as described in any one of the first aspects.

[0022] In some embodiments of the second aspect, the filter material compartment and the equipment compartment are integrally connected to form the box body, and the box body is installed at the bottom end of the cylinder body so that the cylinder body falls on the box body.

[0023] In some embodiments of the second aspect, the bottom end of the cylinder body has an open lower port, the box body is installed on the lower port and closes the cylinder body, and the first water inlet and the second water outlet are both located on the top surface of the box body.

[0024] In some embodiments of the second aspect, a top surface of the box body is provided with a tongue and groove, and the lower port of the cylinder body is inserted into the tongue and groove.

[0025] In some embodiments of the second aspect, the second water outlet is connected to a drain pipe, which is vertically installed on the inner wall of the cylinder, and the water level in the cylinder is lower than the top of the drain pipe.

[0026] In some embodiments of the second aspect, a long strip baffle is vertically installed in the cylinder body, and the edges on both sides of the baffle are fixed to the inner wall of the cylinder body, thereby forming the drain pipe between the baffle and the inner wall of the cylinder body.

[0027] Based on the above technical solution, the box body in the embodiment of the present application includes two compartments, which realize the separate placement of the filter material and the mechanical device. By controlling the three pipe openings of the three-way valve, the connection between the filter material compartment and the equipment compartment, the emptying of the separate filter material compartment, and the emptying of the separate equipment compartment are realized, thereby ensuring normal filtering operation, and the filter material and the mechanical device can be maintained separately. When replacing the filter material or the mechanical device, the corresponding compartment can be emptied to avoid water overflow and wetting nearby objects, solving the problem that the mechanical device and the filter material in the current filtering device cannot be maintained separately. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0029] FIG1 is a schematic structural diagram of a filter device for a fish tank provided in one embodiment of the present application;

[0030] FIG2 is a schematic structural diagram of a filter device for a fish tank provided by one embodiment of the present application after the first hatch and the second hatch are hidden;

[0031] FIG3 is an exploded view of the filter device of the fish tank provided by one embodiment of the present application after partially hiding a first hatch and a second hatch;

[0032] FIG4 is an exploded structural diagram of a filter device for a fish tank provided by one embodiment of the present application from another perspective;

[0033] FIG5 is a schematic diagram of the structure of a fish tank provided by one embodiment of the present application after one side panel is hidden;

[0034] FIG6 is a schematic diagram of a filter device for a fish tank provided by one embodiment of the present application connected to a water inlet pipe and a water outlet pipe;

[0035] FIG. 7 is a schematic diagram of a pressure-applying device in one embodiment of the present application.

[0036] In the figure: 100, filter device; 1, housing; 11, filter material compartment; 111, first water inlet; 112, first water outlet; 12, equipment compartment; 121, second water inlet; 122, second water outlet; 13, partition; 14, water pump; 141, water pump outlet; 15, first hatch; 16, second hatch; 17, mounting groove; 18, heating rod; 19, end cap; 10, assembly port; 101, tongue and groove; 102, recessed surface; 103, stepped surface; 2, three-way valve; 21, first pipe port; 22, second pipe port; 23, third pipe port; 3, grid plate; 4, pressure device; 41, balloon; 42, pipeline; 200, cylinder body; 201, lower port; 300, drain pipe; 400, baffle; 401, drain pipe outlet; 501, water inlet pipe; 502, water outlet pipe. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0038] In the description of this application, it should be understood that the terms "center", "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0039] The terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0041] As shown in Figures 1 to 4 , a first aspect of the present application provides a filter device for a fish tank. In an exemplary embodiment, the filter device 100 for a fish tank includes a housing 1 and a three-way valve 2 .

[0042] The housing 1 includes a filter compartment 11 and an equipment compartment 12. These compartments can be separate or integrated into the housing 1. When these two compartments are integrated, a partition 13 can be provided within the housing 1 to separate the interior space of the housing 1. The filter compartment 11 houses filter material (not shown in the accompanying drawings), while the equipment compartment 12 houses a water pump 14.

[0043] Optionally, the filter compartment 11 is provided with a first hatch 15, and the equipment compartment 12 is provided with a second hatch 16. The first hatch 15 and the second hatch 16 respectively open and close the corresponding compartments. In Figure 3, to clearly illustrate the interiors of the filter compartment 11 and the equipment compartment 12, portions of the first hatch 15 and the second hatch 16 are concealed. When a mechanical device, such as the water pump 14, is installed in the hatch provided in the equipment compartment 12, the mechanical device can serve as the second hatch 16. Removing the mechanical device can open the hatch, thereby gaining access to the equipment compartment 12.

[0044] The three-way valve 2 has three outlets: a first outlet 21, a second outlet 22, and a third outlet 23. The filter chamber 11 is provided with a first water inlet 111 and a first water outlet 112, while the equipment chamber 12 is provided with a second water inlet 121 and a second water outlet 122. The second outlet 22 is connected to the first water outlet 112, the third outlet 23 is connected to the second water inlet 121, and the drain outlet 141 of the water pump 14 is connected to the second water outlet 122.

[0045] In some embodiments, both the first water inlet 111 and the second water outlet 122 are connected to the fish tank. In other embodiments, the filtration device is external to the fish tank and is independent of the fish tank. When filtration is required, the first water inlet 111 and the second water outlet 122 are connected to the fish tank. Alternatively, the first water inlet 111 can be formed on the first hatch 15, and the second water outlet 122 can be formed on the second hatch 16.

[0046] Optionally, the three-way valve 2 is a T-shaped three-way valve. By turning the knob of the three-way valve 2, the valve core rotates, and the valve core closes one pipe opening and connects the other two pipe openings. The structure and function of the three-way valve are prior art and are not the invention of this application.

[0047] When filtering, the knob of the three-way valve 2 is turned to close the first pipe opening 21 and connect the second pipe opening 22 and the third pipe opening 23. Water in the cylinder 200 enters the filter material compartment 11 through the first water inlet 111. The filter material in the filter material compartment 11 filters the incoming water. Since the three-way valve 2 connects the second pipe opening 22 and the third pipe opening 23, the water in the filter material compartment 11 flows into the three-way valve 2 through the first water outlet 112 and the second pipe opening 22, then flows into the equipment compartment 12 through the third pipe opening 23 and the second water inlet 121. Finally, the water is pumped back into the cylinder 200 through the second water outlet 122 by the water pump 14 in the equipment compartment 12.

[0048] When performing maintenance on the mechanical device, turn the knob of the three-way valve 2 to close the second pipe opening 22 and connect the first pipe opening 21 and the third pipe opening 23. Since the three-way valve 2 closes the second pipe opening 22, the first water outlet 112 of the filter material compartment 11 is blocked, and the water in the filter material compartment 11 cannot flow into the equipment compartment 12. At the same time, since the three-way valve 2 connects the first pipe opening 21 and the third pipe opening 23, the water in the equipment compartment 12 enters the three-way valve 2 through the second water inlet 121 and the third pipe opening 23, and is then discharged out of the filter device through the first pipe opening 21, thereby draining the water in the equipment compartment 12. After draining, open the second hatch 16, open the equipment compartment 12, and perform maintenance operations such as replacement and repair on the mechanical devices such as the water pump 14 in the equipment compartment 12.

[0049] When performing maintenance on the filter material, the handle of the three-way valve 2 is turned to close the third pipe opening 23 and connect the first pipe opening 21 and the second pipe opening 22. Since the three-way valve 2 closes the third pipe opening 23, the second water inlet 121 of the equipment compartment 12 is also blocked, and water in the filter material compartment 11 cannot flow into the equipment compartment. At the same time, since the three-way valve 2 connects the first pipe opening 21 and the second pipe opening 22, the water in the filter material compartment 11 enters the three-way valve 2 through the first water outlet 112 and the second pipe opening 22, and is then discharged out of the filter device through the first pipe opening 21, thereby draining the water in the filter material compartment 11. After draining, the first hatch 15 is opened, the filter material compartment 11 is opened, and maintenance operations such as replacing and cleaning the filter material in the filter material compartment 11 are performed.

[0050] In the above-mentioned schematic embodiment, the filtering device of the fish tank not only divides the box body into two independent spaces by the partition, thereby accommodating the mechanical device and the filter material respectively, but also enables the filter material compartment and the equipment compartment to be emptied separately by connecting and closing the three-way valve, and then the filter material compartment and the equipment compartment are opened separately to realize the separate maintenance of the mechanical device and the filter material. Moreover, during maintenance, the opened filter material compartment or equipment compartment has been emptied, and no water will leak out, thereby avoiding wetting nearby objects, thereby solving the problem that the mechanical device and the filter material in the current filtering device cannot be maintained separately.

[0051] When the box body 1 of the filter device is placed at a height above the water level in the cylinder body 200, the water in the cylinder body 200 cannot flow into the filter material compartment 11 and the equipment compartment 12 located at a high position without power. Therefore, when maintaining the mechanical device or filtering the filter material, emptying the filter material compartment 11 or the equipment compartment 12 will not cause the water in the cylinder body 200 to be discharged, thereby avoiding water waste.

[0052] In some embodiments, the first pipe opening 21 is connected to a pressure-applying device 4, which can apply pressure to the interior of the filter material compartment 11 through the first pipe opening 21. When performing maintenance on the filter material, the first pipe opening 21 and the second pipe opening 22 are connected, and the first pipe opening 21, the second pipe opening 22 and the first water outlet 112 are in communication. The pressure-applying device 4 can apply pressure to the interior of the filter material compartment 11 through the first pipe opening 21, causing the water in the filter material compartment 11 to vibrate violently. Sediment at the bottom of the filter material compartment 11 and impurities on the filter material are mixed into the water and discharged out of the filter device through the first pipe opening 21 together with the water, thereby emptying the water in the filter material compartment 11 and cleaning the filter material at the same time. Optionally, the pressure-applying device 4 is a balloon 41. In the embodiment shown in Figure 7, both ends of the balloon 41 are connected to pipes 42 that are connected to the interior of the balloon 41. One of the pipes 42 is connected to the first pipe port 21 of the three-way valve 2, and the other pipe 42 is blocked. Pressure can be applied to the filter material chamber 11 by repeatedly pressing the balloon 41. However, it can be understood that the pressure-applying device can also be any other device that can apply pressure, and this application does not impose any restrictions.

[0053] In some embodiments, as shown in FIG6 , the first water inlet 111 is used to connect to the water inlet pipe 501, and the second water outlet 122 is used to connect to the water outlet pipe 502. The water inlet pipe 501 and the water outlet pipe 502 both extend into the cylinder body 200, and the water inlet pipe 501 is submerged in the water in the cylinder body 200. Therefore, during filtration, the water in the cylinder body 200 can flow into the filter material compartment 11 through the water inlet pipe 501 and the first water inlet 111. After the water flows into the equipment compartment 12, it is pumped back into the cylinder body 200 by the water pump 14 through the second water outlet 122 and the water outlet pipe 502.

[0054] When the filter material compartment or the equipment compartment is emptied by controlling the three-way valve 2, the end of the water inlet pipe or the water outlet pipe extending into the cylinder body 200 is moved above the water level in the cylinder body 200. This prevents the water in the cylinder body 200 from flowing into the filter material compartment 11 or the equipment compartment 12 through the water inlet pipe or the water outlet pipe. This prevents the loss of water in the cylinder body 200 when the filter material compartment 11 or the equipment compartment 12 is emptied. The end of the water outlet pipe extending into the cylinder body 200 can be fixed above the water level in the cylinder body 200, allowing the water outlet pipe to pump water back into the cylinder body 200. At the same time, there is no need to move the water outlet pipe when emptying the equipment compartment, thereby preventing the loss of water in the cylinder body 200.

[0055] In some embodiments, the filter material compartment 11 and the equipment compartment 12 are integrally connected to form a housing 1. The bottom surface of the housing 1 is provided with a mounting groove 17. The three-way valve 2 is mounted on the housing 1 and located in the mounting groove 17. The three-way valve 2 is located in the mounting groove 17, overlapping the height and width space of the housing 1, thereby avoiding the three-way valve 2 from occupying additional external space and reducing the overall volume of the filtration device.

[0056] In some embodiments, since the mounting groove 17 causes the bottom surface of the housing 1 to be recessed upward, the mounting groove 17 is disposed below the equipment compartment 12, so that the bottom surface of the filter material compartment 11 is lower than the bottom surface of the equipment compartment 12. Even if the height of the equipment compartment 12 is less than the height of the filter material compartment 11, the filter material compartment 11 can accommodate a larger volume of filter material, thereby improving the filtering effect. The mounting groove 17 is disposed so that its top surface and side surfaces correspond to the bottom surface of the equipment compartment 12 and the side walls of the filter material compartment 11, respectively. The first water outlet 112 and the second water inlet 121 are located on the side and top surfaces of the mounting groove 17, respectively. The three-way valve 2 located in the mounting groove 17 can be directly mounted on the first water outlet 112 or the second water inlet 121, or indirectly connected to the first water outlet 112 or the second water inlet 121 through a shorter pipeline, so that the pipeline connection structure of the three-way valve 2 is also located in the mounting groove 17, thereby reducing the overall volume of the filtering device.

[0057] In the above embodiment, the filter material compartment 11 and the equipment compartment 12 are arranged side by side in the transverse direction in the box body 1 , and the mounting groove 17 is formed below the equipment compartment 11 , so that the bottom surface of the equipment compartment 11 is higher than the bottom surface of the filter material compartment 11 .

[0058] In some embodiments, a heating rod 18 is installed in the equipment compartment 12, and one end of the heating rod 18 has an end cover 19. The equipment compartment 12 is provided with an assembly port 10, and the heating rod 18 enters the equipment compartment 12 through the assembly port 10. The end cover 19 is installed on the assembly port 10 and closes it.

[0059] The heating rod 18 can be directly inserted from the outside and fixed by a knob, which is convenient for assembly and disassembly. Moreover, when the equipment compartment 12 is emptied, the heating rod 18 can be independently maintained together with the water pump 14 for easy maintenance.

[0060] In some embodiments, a grid plate 3 is installed in the filter material compartment 11, a first water inlet 111 and a first water outlet 112 are respectively located on either side of the grid plate 3, and the filter material is installed on the grid plate 3. When the grid plate 3 is arranged in the filter material compartment 11 in a transverse direction, the first water inlet 111 and the second water outlet 112 are respectively located on the upper side and the lower side of the grid plate 3.

[0061] The grid plate 3 supports the filter material to prevent the filter material from blocking the first water outlet 112 , ensuring that the filtered water can flow smoothly into the equipment compartment 12 and be pumped back into the cylinder 200 by the water pump 14 in the equipment compartment 12 .

[0062] A second aspect of the present application provides a fish tank, which includes a tank body 200 and the filtering device 100 described in any embodiment of the first aspect.

[0063] In some embodiments, as shown in FIG5 , the filter material compartment 11 and the equipment compartment 12 are integrally connected to form a housing 1, which is mounted at the bottom end of the cylinder 200 so that the cylinder 200 rests on the housing 1. The cylinder 200 is mounted on the housing 1, allowing the cylinder 200 and the filter device 100 to be integrally connected, which reduces space usage compared to placing the filter device 100 independently outside the cylinder.

[0064] In some embodiments, the bottom end of the cylinder body 200 has an open lower port 201 , the box body 1 is mounted on the lower port 201 and closes it, and the first water inlet 111 and the second water outlet 122 are both located on the top surface of the box body 1 .

[0065] The box body 1 of the filtering device 100 directly serves as the bottom plate of the cylinder body 200, saving the material of the cylinder body 200. At the same time, the first water inlet 111 and the second water outlet 122 on the top surface of the box body 1 are located at the bottom of the cylinder body 200 and are directly immersed in the water in the cylinder body 200, so that the water in the cylinder body 200 can directly flow into the filter material cabin 11 of the box body 1, and the water in the equipment cabin 12 can also be directly pumped into the water body in the cylinder body 200, and the water pumped back to the cylinder body 200 will not make noise.

[0066] In some embodiments, as shown in FIG5 , the first hatch 15 and the second hatch 16 are located on the same side and together constitute the top surface of the housing 1. One side of the first hatch 15 and the second hatch 16 of the housing 1 is disposed upward at the bottom end of the cylinder 200, and the first hatch 15 and the second hatch 16 together constitute the bottom surface of the cylinder 200. Optionally, the first water inlet 111 is formed on the first hatch 15, and the second water outlet 122 is formed on the second hatch 16, thereby directly communicating with the interior of the cylinder 200.

[0067] In some embodiments, the top surface of the housing 1 is provided with a tongue and groove 101, and the lower end port 31 of the cylinder body 200 is plugged into the tongue and groove 101. By providing the tongue and groove 101 for plugging, not only can the cylinder body 200 be more conveniently positioned and installed on the housing 1, but also the tightness of the connection between the cylinder body 200 and the housing 1 can be improved, thereby improving the sealing performance. As shown in Figure 2, the outer periphery of the top surface of the housing 1 is recessed downward to form a recessed surface 102 surrounding the top surface, and a step surface 103 is formed between the recessed surface 102 and the top surface. The recessed surface 102 and the step surface 103 constitute the tongue and groove 101, and the lower end surface of the cylinder body 200 is pressed on the recessed surface 102, and the inner wall surface of the cylinder body 200 is in contact with the step surface 103, and the cylinder body 200 is fixedly connected to the tongue and groove 101 by gluing.

[0068] In some embodiments, the second water outlet 122 is connected to a drain pipe 300, which is vertically installed on the inner wall of the cylinder body 200, so that the water pumped out of the equipment compartment 12 is guided through the drain pipe 300 to above the liquid level in the cylinder body 200, and then flows back into the cylinder body 200. The water level in the cylinder body 200 is lower than the top of the drain pipe 300, so that it cannot flow into the drain pipe 300 by itself, thereby avoiding the loss of water in the cylinder body 200 when the equipment compartment 12 is emptied.

[0069] To enhance aesthetics, a long strip of baffle 400 is vertically installed within the cylinder body 200. The left and right edges of the baffle 400 are fixed to the inner wall of the cylinder body 200, thereby forming a drain pipe 300 between the baffle 400 and the inner wall of the cylinder body 200. It is understood that the lower end of the baffle extends to the top surface of the housing 1 and the second water outlet 122 is located between the baffle 400 and the inner wall of the cylinder body 200.

[0070] Furthermore, in order to prevent water from spraying upward, the top of the drain pipe 300 is closed, and a drain pipe outlet 401 is opened on the baffle 400, so that the water in the drain pipe 300 flows back into the cylinder body 200 through the drain pipe outlet 401.

[0071] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0072] The above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the same. Although the present application has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present application can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solutions of the present application. They should all be included in the scope of the technical solutions for which protection is requested in the present application.

Claims

1. A filter device for a fish tank, characterized in that: Including a box body and a three-way valve; The box body comprises a filter material compartment and an equipment compartment, wherein the filter material compartment is used to install filter material, and the equipment compartment is equipped with a water pump; The three-way valve has three pipe openings, which are used to close one pipe opening and connect the other two pipe openings; The three pipe openings are respectively a first pipe opening, a second pipe opening and a third pipe opening; The filter material compartment is provided with a first water inlet and a first water outlet, and the equipment compartment is provided with a second water inlet and a second water outlet; The second pipe opening is communicated with the first water outlet, the third pipe opening is communicated with the second water inlet, and the drain outlet of the water pump is communicated with the second water outlet.

2. The filter device for a fish tank according to claim 1, characterized in that: The first water inlet is used to connect the water inlet pipe to send the water in the tank body of the fish tank into the filter material cabin; the second water outlet is used to connect the water outlet pipe to send the water in the equipment cabin back to the tank body of the fish tank.

3. The filter device for a fish tank according to claim 1, characterized in that: When filtering, the first pipe port of the three-way valve is closed and the second pipe port and the third pipe port are connected, so that the water in the cylinder body enters the filter material cabin through the first water inlet for filtration, flows into the three-way valve through the first water outlet and the second pipe port, and then flows into the equipment cabin through the third pipe port and the second water inlet, and is finally pumped back into the cylinder body by the water pump through the second water outlet.

4. The filter device for a fish tank according to claim 1, characterized in that: When performing maintenance on the equipment compartment, the second pipe port of the three-way valve is closed and the first pipe port and the third pipe port are connected, the water in the equipment compartment enters the three-way valve through the second water inlet and the third pipe port, and is discharged to the outside of the filter device through the first pipe port, thereby draining the water in the equipment compartment.

5. The filter device for a fish tank according to claim 1, characterized in that: When performing maintenance on the filter material compartment, the third pipe port of the three-way valve is closed and the first pipe port and the second pipe port are connected, the water in the filter material compartment enters the three-way valve through the first water outlet and the second pipe port, and is discharged to the outside of the filter device through the first pipe port, thereby draining the water in the filter material compartment.

6. The filter device for a fish tank according to claim 1, characterized in that: The filter material compartment and the equipment compartment are integrally connected to form the box body. The bottom surface of the box body is provided with a mounting groove. The three-way valve is installed on the box body and is located in the mounting groove.

7. The filter device for a fish tank according to claim 6, characterized in that: The installation groove is located below the equipment compartment, and the bottom surface of the filter material compartment is lower than the bottom surface of the equipment compartment. The top surface and side surfaces of the installation groove correspond to the bottom surface of the equipment compartment and the side walls of the filter material compartment respectively. The first water outlet and the second water inlet are respectively located on the top surface and side surfaces of the installation groove.

8. The filter device for a fish tank according to claim 1, characterized in that: A heating rod is installed in the equipment compartment, one end of the heating rod has an end cover, the equipment compartment is provided with an assembly port, the heating rod enters the equipment compartment through the assembly port, and the end cover is installed on the assembly port to seal it.

9. The filter device for a fish tank according to claim 1, characterized in that: A grid plate is installed in the filter material cabin, the first water inlet and the first water outlet are respectively located on both sides of the grid plate, and the grid plate is used to install the filter material.

10. The filter device for a fish tank according to claim 1, characterized in that: The first pipe opening is connected to a pressure-applying device, and the pressure-applying device can apply pressure to the interior of the filter material cabin through the first pipe opening.

11. A fish tank, characterized in that: The invention comprises a tank body and a filtering device for a fish tank as claimed in any one of claims 1 to 10.

12. The fish tank according to claim 11, characterized in that: The filter material compartment and the equipment compartment are integrally connected to form the box body, and the box body is installed at the bottom end of the cylinder body so that the cylinder body falls on the box body.

13. The fish tank according to claim 12, characterized in that: The bottom end of the cylinder body has an open lower port, the box body is installed on the lower port and seals the cylinder body, and the first water inlet and the second water outlet are both located on the top surface of the box body.

14. The fish tank according to claim 13, characterized in that: The top surface of the box body is provided with a tongue and groove, and the lower port of the cylinder body is inserted into the tongue and groove.

15. The fish tank according to claim 13, characterized in that: The second water outlet is connected to a drain pipe, which is vertically installed on the inner wall of the cylinder body, and the water level in the cylinder body is lower than the top of the drain pipe.

16. The fish tank according to claim 15, characterized in that: A strip-shaped baffle is vertically installed in the cylinder body, and the edges on the left and right sides of the baffle are fixed on the inner wall of the cylinder body, so that the drain pipe is formed between the baffle and the inner wall of the cylinder body.

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