Low water filter with active recirculation bottom water flow

Abstract

This utility model discloses a low-level filter with active bottom circulation water flow, including an inlet unit, an impeller chamber, a power chamber, a filter chamber, an outlet unit, and a centrifugal pump located at the bottom. The power system of the centrifugal pump is installed in the power chamber, and the impeller of the centrifugal pump is located in the impeller chamber. A filter element is installed in the filter chamber. Wastewater enters the impeller chamber from the inlet unit and is transported to the filter chamber by the centrifugal pump. After being filtered by the filter element, the wastewater flows out from the outlet unit. By setting an outlet nozzle on the outside of the low-level filter and connecting the outlet nozzle to the impeller chamber, the centrifugal force generated by the impeller discharges part of the water from the outlet nozzle, forming a downward water flow force that can effectively agitate the water at the bottom of the aquarium, accelerating the flow of water at the bottom of the aquarium that is far from the filter. The adjustable angle design of the outlet nozzle allows the water flow force to cover different positions at the bottom of the aquarium, enabling the wastewater at the bottom to circulate and greatly improving the filtration effect.

Description

Technical Field

[0001] This utility model relates to the field of aquarium filtration equipment, specifically to a low-water-level filter with active bottom circulation. Background Technology

[0002] With the increasing popularity of aquarium keeping, aquarium filters, as essential equipment for maintaining water quality, directly impact the health of the aquarium ecosystem. Currently, common filters on the market include various types such as hang-on, bottom-mounted, and built-in filters, among which low-level filters are widely used due to their suitability for aquariums with low water levels.

[0003] Traditional low-water-level filters typically employ a simple pump structure to draw water from the aquarium, filter it through filter media, and then return it to the aquarium. For example, CN107299902B discloses a drain pump comprising a pump housing and a filter. The pump housing has a filter chamber and an impeller chamber. The filter is installed within the pump housing and has a filter element. A gap is formed between the filter element and the pump housing, connecting the filter chamber and the impeller chamber. This structure primarily addresses the noise issue during drainage but does not consider the comprehensiveness of water circulation.

[0004] To address the initial air trapping problem in drainage pumps, CN105673521B proposes a drainage pump that reduces initial air trapping by incorporating an airflow channel between the filter chamber and the impeller chamber. CN215333465U further improves this design by adding a baffle in the filter to prevent the airflow channel from being blocked by foreign objects. While these designs solve specific problems, they fail to effectively improve the overall water circulation efficiency.

[0005] Regarding drainage methods, CN111074501A discloses a washing machine drainage device that uses a top-drainage method to prevent air trapping inside the drain pump assembly from causing water flow obstruction. However, this design is mainly designed for washing machine applications and is not suitable for low-water-level environments such as fish tanks.

[0006] Existing low-water-level filters have significant shortcomings: First, their water intake method is singular, typically only drawing water from the surrounding area, resulting in poor water flow in areas far from the filter, especially at the bottom of the aquarium. Second, the filtration system lacks an active circulation mechanism for the bottom water, making it difficult to effectively filter bottom sediment. These problems lead to low overall filtration quality, particularly for wastewater at the bottom of the aquarium far from the filter, which has a very low chance of being filtered due to poor flow, thus affecting the overall water quality of the aquarium environment.

[0007] Therefore, there is an urgent need for a low-water-level filter that can actively circulate the bottom water flow to improve overall filtration efficiency, especially to improve the water quality at the bottom of the aquarium, away from the filter. Utility Model Content

[0008] The main purpose of this invention is to provide a low-water-level filter with active bottom water circulation, which aims to achieve effective filtration of the water at the bottom of the aquarium.

[0009] This utility model proposes a low-level filter with active circulating bottom water flow, including an inlet unit located at the bottom, an impeller cavity communicating with the inlet unit, a power cavity adjacent to the impeller cavity, a filter cavity communicating with the impeller cavity, an outlet unit communicating with the filter cavity, and a centrifugal pump. The centrifugal pump includes an impeller and a power system for driving the impeller to rotate. The power system is installed in the power cavity, the impeller is located in the impeller cavity, and the transmission part of the power system extends from the power cavity to the impeller cavity to connect with the impeller. A filter element is installed in the filter cavity. Wastewater enters the impeller cavity from the inlet unit and is transported to the filter cavity by the centrifugal pump. After being filtered by the filter element, the wastewater flows out from the outlet unit.

[0010] It also includes a water outlet located on the outside, which is connected to the impeller cavity. The water outlet of the water outlet and the impeller cavity is aligned with the centrifugal force direction of the impeller, and the water outlet direction is downward.

[0011] Preferably, the water outlet angle is limited to 45°.

[0012] Preferably, the water outlet is rotatably inserted into the water outlet port, and the water outlet can rotate 360° about the central axis to adjust the water outlet direction.

[0013] Preferably, the power chamber is located above the impeller chamber, the filter chamber is located above the power chamber, and the impeller chamber and the filter chamber are connected by a communication channel located outside the power chamber.

[0014] Preferably, the water inlet unit includes a water inlet and a water inlet chamber connected above the water inlet, the impeller chamber is connected above the water inlet chamber, and the communication port between the impeller chamber and the water inlet chamber is directly below the impeller.

[0015] Preferably, it includes a support portion supported on the bottom periphery, the water inlet is positioned higher than the lower end of the support portion, the support portion is provided with a water passage hole, and the support portion provides a water inlet space below the water inlet.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] By installing a water outlet on the outside of the low-level filter and connecting it to the impeller chamber, the centrifugal force generated by the impeller forces some water out through the outlet, creating a downward water flow that effectively agitates the water at the bottom of the aquarium, accelerating the flow of water even that is far from the filter. In particular, the adjustable-angle outlet design allows the water flow to cover different areas of the aquarium bottom, promoting circulation of wastewater and significantly improving filtration efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the internal structure of a low-level filter with active circulating bottom water flow, according to an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of a low-level filter with active circulating bottom water flow, as an embodiment of the present invention. Figure 1 .

[0020] Figure 3 This is a schematic diagram of the structure of a low-level filter with active circulating bottom water flow, as an embodiment of the present invention. Figure 2 .

[0021] Figure 4 This is an exploded view of the structure of a low-level filter with active circulating bottom water flow, according to an embodiment of the present invention.

[0022] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals identify the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0025] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] Reference Figures 1 to 4 This utility model provides a low-water-level filter with active bottom-circulating water flow, including an inlet unit located at the bottom, an impeller chamber 4 communicating with the inlet unit, a power chamber adjacent to the impeller chamber 4, a filter chamber 6 communicating with the impeller chamber 4, an outlet unit communicating with the filter chamber 6, and a centrifugal pump. The centrifugal pump includes an impeller 20 and a power system 30 for driving the impeller 20 to rotate. The power system 30 is installed in the power chamber and is a waterproof motor. The impeller 20 is located in the impeller chamber 4, and the transmission part of the power system 30 extends from the power chamber to the impeller chamber 4 to connect with the impeller 20. A filter element 40 is installed in the filter chamber 6. In use, the filter is fixed to the side wall of the fish tank, the impeller chamber 4 is immersed in the water in the fish tank, water enters the impeller chamber 4 from the inlet unit, and the centrifugal pump delivers the water to the filter chamber 6. After being filtered by the filter element 40, the water flows back into the fish tank from the outlet unit, realizing the circulation and filtration of water in the fish tank.

[0027] In terms of specific structure, the power chamber is located above the impeller chamber 4, and the filter chamber 6 is located above the power chamber. The impeller chamber 4 and the filter chamber 6 are connected by a connecting channel 5 located outside the power chamber. This structural layout makes the entire filter form a vertically layered structure, which facilitates the upward flow of water and filtration.

[0028] The water inlet unit includes an inlet 1 and an inlet chamber 2 connected above the inlet 1. An impeller chamber 4 is connected above the inlet chamber 2, and the connection port 3 between the impeller chamber 4 and the inlet chamber 2 is directly opposite the bottom of the impeller 20. This design allows water to flow directly into the working area of ​​the impeller 20 from the bottom.

[0029] like Figure 1As shown, the water inlet unit includes an inlet 1 at the bottom and an inlet chamber 2 above the inlet 1. An impeller chamber 4 is connected above the inlet chamber 2, and a connecting port 3 between the impeller chamber 4 and the inlet chamber 2 faces the lower part of the impeller 20. The power chamber is located above the impeller chamber 4, and the filter chamber 6 is located above the power chamber. The impeller chamber 4 and the filter chamber 6 are connected by a connecting channel 5 located outside the power chamber. A support ring 9 is provided around the bottom periphery of the filter. The inlet 1 is positioned higher than the lower end of the support ring 9. The support ring 9 has a water passage hole 91, which, through the support of the support ring 9, provides space for water to enter below the inlet 1. The water outlet unit includes an outlet chamber 7 above the filter chamber 6 and an outlet 8 located in front of the outlet chamber 7 and connected to it. A suction cup is provided on the back of the filter. In use, the filter is supported in the aquarium by the support ring 9 and is attached to the side wall of the aquarium by the suction cup. The water level in the aquarium is not lower than the height of the impeller chamber 4. Water flows into the water inlet space from the water inlet hole 91, and then into the impeller chamber 4 through the water inlet 1 and the water inlet chamber 2. The centrifugal pump delivers the water to the filter chamber 6. After being filtered by the filter element 40, the water is discharged into the water outlet chamber 7 and then flows back into the aquarium from the water outlet 8, thus realizing the circulation filtration of water in the aquarium.

[0030] The filter is supported at the bottom of the aquarium, and the water inlet 1 is located at the bottom of the filter, which can filter the water at the bottom of the aquarium.

[0031] Furthermore, a water outlet 10 is provided on the outer wall of the filter, positioned opposite the impeller cavity 4 and connected to it. The water outlet 10, which connects to the impeller cavity 4, faces the direction of the centrifugal force of the impeller 20. When the impeller 20 rotates, the centrifugal force generated causes the water in the impeller cavity 4 to be discharged towards the water outlet 10 and the connecting channel 5. This design utilizes the centrifugal force generated by the rotation of the impeller 20 to allow some water to be discharged from the water outlet 10, forming a downward water flow and effectively circulating the bottom water flow.

[0032] Because the outlet diameter of the spout 10 is small, the water flow is small and does not affect the circulation filtration. The water discharged from the spout 10 can form a water flow force. The water outlet direction of the spout 10 is downward. The water discharged through the spout 10 impacts the water at the bottom of the fish tank, achieving a stirring effect on the water at the bottom of the fish tank, accelerating the flow of the water at the bottom of the fish tank, thereby achieving the purpose of filtering the water at the bottom of the fish tank.

[0033] The water outlet is located on the outer wall of the filter. The water outlet 10 is integrally formed, including a plug-in part and a water outlet part that is inclined to the plug-in part. The plug-in part is inclined at a 135-degree angle to the water outlet part, and the plug-in part is horizontally inserted into the water outlet. It can rotate 360°, and the water outlet part is inclined outward at a 45-degree angle relative to the horizontal plane. This rotatable design allows the water outlet direction of the water outlet 10 to be adjusted according to actual needs, increasing the flexibility of use.

[0034] During operation, wastewater enters the inlet chamber 2 from the inlet unit and then rises into the impeller chamber 4. Driven by the power system 30, the impeller 20 rotates at high speed, generating centrifugal force to transport the wastewater to the filter chamber 6. At the same time, some water is discharged from the outlet 10 under the action of centrifugal force, forming a downward water flow. This water flow impacts the bottom of the aquarium, stirring up the bottom sediment and suspending it, and then it is sucked into the inlet 1, realizing the active circulation of bottom water flow.

[0035] Wastewater entering filter chamber 6 is filtered by filter element 40 and flows out from the outlet unit, while the filtered clean water flows back into the fish tank. Filter element 40 can be made of different filter media, such as filter cotton, to meet different filtration needs.

[0036] By configuring an adjustable water outlet 10, users can rotate the water outlet 10 according to the actual situation, so that the water at different positions at the bottom of the fish tank can be subjected to the active water flow force from the low water level filter.

[0037] This low-level filter design, featuring active bottom circulation, utilizes the centrifugal force generated by the impeller 20 to create a downward water flow, effectively solving the problem of traditional filters' inability to effectively clean bottom sediment. Simultaneously, the adjustable spout 10 increases usability, allowing users to adjust the water flow direction according to the specific conditions of the aquarium or water body. Furthermore, the overall vertically layered structure design enables the filter to operate effectively at low water levels, making it suitable for various shallow water environments.

[0038] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A low water level filter with active circulating bottom water flow, characterized in that, The system includes an inlet unit located at the bottom, an impeller chamber communicating with the inlet unit, a power chamber adjacent to the impeller chamber, a filter chamber communicating with the impeller chamber, an outlet unit communicating with the filter chamber, and a centrifugal pump. The centrifugal pump includes an impeller and a power system for driving the impeller to rotate. The power system is installed in the power chamber, the impeller is located in the impeller chamber, and the transmission part of the power system extends from the power chamber to the impeller chamber to connect with the impeller. A filter element is installed in the filter chamber. Wastewater enters the impeller chamber from the inlet unit and is transported to the filter chamber by the centrifugal pump. After being filtered by the filter element, the wastewater flows out from the outlet unit. It also includes a water outlet located on the outside, which is connected to the impeller cavity. The water outlet of the water outlet is connected to the impeller cavity and faces the direction of the centrifugal force of the impeller. The water outlet of the water outlet faces downward.

2. The low water stand filter with active circulating bottom water flow of claim 1, wherein, The water outlet angle is limited to 45°.

3. The low water stand filter with active circulating bottom water flow according to claim 2, characterized in that, The water outlet can be rotatably inserted into the water outlet port, and the water outlet can rotate 360° around the central axis to adjust the water outlet direction.

4. A low water filter with active circulating bottom water flow according to claim 1 or 2 or 3, characterized in that, The power chamber is located above the impeller chamber, the filter chamber is located above the power chamber, and the impeller chamber and the filter chamber are connected by a connecting channel located outside the power chamber.

5. The low-level filter with active circulating bottom water flow according to claim 4, characterized in that, The water inlet unit includes a water inlet and a water inlet chamber connected above the water inlet. The impeller chamber is connected above the water inlet chamber, and the communication port between the impeller chamber and the water inlet chamber is directly below the impeller.

6. The low water stand filter with active circulating bottom water flow according to claim 5, characterized in that, It includes a support part on the bottom periphery, the water inlet is located higher than the lower end of the support part, the support part is provided with a water passage hole, and the support part provides a water inlet space below the water inlet.

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