A type of filter that separates dirt from other substances

Abstract

This utility model discloses a dirt-separating filter, including an inlet unit, an outlet unit, and a filter body. The inlet unit includes an inlet at the bottom of the filter and an inlet chamber above it. The inlet chamber has a dirt-separating plate with a density lower than water, which covers the inlet. A guide post is provided in the inlet chamber along the water inlet direction. The dirt-separating plate has a through-hole corresponding to the guide post, and the dirt-separating plate can be movably fitted onto the guide post. A blocking structure is provided at the upper end of the guide post to prevent the dirt-separating plate from detaching. The filter body includes a water pump unit and a filter unit, and the filter unit includes a filter chamber and a filter element. When the filter needs cleaning, it is removed vertically from the fish tank. Under the influence of gravity, the water in the filter flows downward from the inlet. At this time, the dirt-separating plate moves downward under the influence of gravity, sealing the inlet. This prevents fish waste and other debris in the filter chamber from flowing back into the fish tank, avoiding secondary pollution and protecting the water quality of the fish tank.

Description

Technical Field

[0001] This utility model relates to the field of aquarium filtration equipment, specifically to a dirt-separating filter. Background Technology

[0002] With the improvement of people's living standards, keeping aquarium pets has become a popular leisure activity. Maintaining water quality is crucial in aquarium care, and the filter, as a key device for keeping the water clean, directly affects the health of the aquarium environment. Currently, common aquarium filters on the market include various types such as built-in filters, hang-on filters, and bottom filtration systems.

[0003] Existing aquarium filters typically include a basic structure comprising an inlet unit, a filtration unit, and an outlet unit. For example, CN220294266U discloses a filter and a pet water dispenser, which includes a filter body with a water flow channel. The water flow channel contains an impeller chamber and a filtration chamber located above the impeller chamber. An inlet and an outlet are formed at opposite ends of the water flow channel. A filtration assembly is placed within the filtration chamber. A rotor is rotatably connected to the filter body and includes a shaft extending into the impeller chamber. The impeller is located within the impeller chamber and mounted on the rotor's shaft. This structure enables water to be filtered before being discharged, resulting in cleaner water.

[0004] Regarding the structural design of the filter, CN215333465U discloses a filter and a centrifugal pump, including a pump casing. The pump casing has an inlet, an outlet, a filter chamber communicating with the inlet, and an impeller chamber communicating with the outlet. The filter chamber contains a filter that connects the filter chamber and the impeller chamber. The filter includes a lower end plate and a central cylinder. The lower end plate has a central opening to form a suction port. The central cylinder extends axially upward from the edge of the suction port, and a radially extending baffle is provided on the outer wall of the central cylinder to block foreign objects and prevent the airflow channel from being blocked.

[0005] However, after a period of use, existing aquarium filters often face a common problem when they need to be removed for cleaning: when the filter is removed from the aquarium, the water and debris inside the filter will flow back into the aquarium through the inlet, causing the dirt collected by the filter to re-enter the aquarium, resulting in secondary pollution and seriously affecting the water quality.

[0006] Furthermore, while some existing technologies attempt to address the backflow problem, most are structurally complex, increasing manufacturing costs, or require manual operation of valves and other devices, making them inconvenient to use. Therefore, there is an urgent need for a simple aquarium filter that automatically prevents backflow contamination, thus resolving the secondary contamination problem caused by the removal and cleaning of existing filters. Utility Model Content

[0007] To address the technical problem of secondary pollution caused by water and debris flowing back into the aquarium from the inlet during cleaning of existing aquarium filters, this utility model provides a dirt-separating filter to prevent secondary pollution and protect aquarium water quality.

[0008] This utility model proposes a dirt-separating filter, including an inlet unit, an outlet unit, and a filter body. Water enters from the inlet unit, is filtered and transported through the filter body, and the filtered water is transported to the outlet unit and discharged from the outlet unit, thus realizing wastewater filtration.

[0009] The water inlet unit includes an inlet located at the bottom of the filter and an inlet cavity communicating with the inlet above the inlet. A dirt-separating plate covering the inlet is provided in the inlet cavity. The density of the dirt-separating plate is lower than that of water. A guide post is provided in the inlet cavity along the water inlet direction. The dirt-separating plate has a through-hole corresponding to the guide post and with a diameter larger than the outer diameter of the guide post. The guide post passes through the through-hole, and the dirt-separating plate is movably fitted onto the guide post. A blocking structure is provided at the upper end of the guide post to prevent the dirt-separating plate from detaching from the guide post. When the dirt-separating plate is at its lowest position on the guide post, it covers the inlet.

[0010] Preferably, the filter body includes a water pump unit and a filter unit located at the lower end of the water pump unit. The filter unit includes a filter chamber communicating with the upper part of the water inlet chamber and a filter element disposed in the filter chamber. The upper end of the guide post abuts against the bottom of the filter element, and the bottom of the filter element abuts against the upper end of the guide post to form the blocking structure. The radial dimension of the dirt separation plate is smaller than the radial dimension of the bottom surface of the filter element and the size of the communication port between the water inlet and the filter chamber.

[0011] Preferably, a support frame is provided around the water inlet chamber, and the filter element is supported on the support frame.

[0012] Preferably, the water pump unit includes an impeller chamber communicating with the filter chamber, a power chamber adjacent to the impeller 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.

[0013] Preferably, the impeller cavity is connected above the filter cavity, and the communication port between the impeller cavity and the filter cavity is directly opposite the lower part of the impeller. A spacer bracket extending into the filter cavity is provided at the communication port. The spacer bracket has a space communicating with the communication port. The spacer bracket is pressed on the filter element, so that there is a space between the filter element and the communication port.

[0014] Preferably, the water outlet unit includes a water outlet chamber and a water outlet communicating with the water outlet chamber, the impeller chamber and the water outlet chamber are connected by a communication channel, and the water outlet is located on the upper front side of the filter.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] When the filter needs cleaning, remove it vertically from the aquarium. Under gravity, the water inside the filter flows downwards from the inlet. At this time, the separator plate moves downwards under the weight of the water, sealing the inlet. This prevents fish waste and other debris from flowing back into the aquarium, avoiding secondary pollution and protecting the aquarium water quality. Compared to existing technologies, this invention, by incorporating a separator plate in the inlet chamber that can move up and down on a guide column, utilizes the density characteristics of the separator plate to ensure normal water intake during inlet operation and automatically seals the inlet when the filter is removed. This effectively solves the technical problem of secondary pollution caused by existing aquarium filters during cleaning. The design is simple, easy to use, and highly practical. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the dirt-separating filter in an embodiment of the present invention.

[0018] Figure 2 This is a perspective view of the dirt-separating filter in an embodiment of this utility model.

[0019] Figure 3 This is a schematic diagram of the upper part of the dirt-separating filter, which includes a water pump unit, in an embodiment of this utility model.

[0020] Figure 4 This is a schematic diagram of the inside of the impeller cavity of the dirt-separating filter in an embodiment of this utility model.

[0021] Figure 5 This is a schematic diagram showing the dirt-separating plate of the dirt-separating filter in an embodiment of the present invention being moved down to cover the water inlet.

[0022] Figure 6 This is a schematic diagram showing the dirt-separating plate of the dirt-separating filter floating away from the water inlet in an embodiment of this utility model.

[0023] 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

[0024] 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.

[0025] 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.

[0026] 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.

[0027] Reference Figures 1 to 6 This utility model provides a dirt-separating filter, including an inlet unit, an outlet unit, and a filter body. Water enters through the inlet unit, is filtered and transported through the filter body, and the filtered water is transported to the outlet unit for discharge, thus achieving wastewater filtration.

[0028] Specifically, the water inlet unit includes an inlet 11 located at the bottom of the filter and an inlet chamber 2 communicating with the inlet 11 above it. The filter body includes a pump unit and a filter unit located at the lower end of the pump unit. The filter unit includes a filter chamber 3 communicating with the inlet chamber 2 above it and a filter element 4 disposed within the filter chamber 3. The pump unit includes an impeller chamber 5 communicating with the filter chamber 3, a power chamber adjacent to the impeller chamber 5, and a centrifugal pump. The centrifugal pump includes an impeller 6 and a power system 7 for driving the impeller 6 to rotate. The power system 7 is installed in the power chamber, and the impeller 6 is located in the impeller chamber 5. The transmission part of the power system 7 extends from the power chamber to the impeller chamber 5 to connect with the impeller 6. The power system 7 is a waterproof motor. The water outlet unit includes an outlet chamber 8 and an outlet 9 communicating with the outlet chamber 8. The impeller chamber 5 and the outlet chamber 8 are connected by a connecting channel 15. The outlet 9 is located on the upper front side of the filter.

[0029] When in use, the filter is fixed on the fish tank. The filter's inlet unit, filter chamber 3, and impeller chamber 5 are immersed in the water in the fish tank. Water flows into the inlet chamber 2 from the inlet 11, and then into the filter chamber 3. After being filtered by the filter element 4 in the filter chamber 3, it flows into the impeller chamber 5. The power system 7 drives the impeller 6 to rotate, generating centrifugal force, which transports the water in the impeller chamber 5 through the connecting channel 15 to the outlet chamber 8, and finally flows back into the fish tank from the outlet 9, thus realizing the circulation and filtration of water in the fish tank.

[0030] A dirt-separating plate 11 is provided in the water inlet chamber 2 to cover the water inlet 11. A guide post 10 is provided in the water inlet chamber 2 along the water inlet direction. The dirt-separating plate 11 has a through-hole corresponding to the guide post 10 and with a diameter larger than the outer diameter of the guide post 10. The guide post 10 passes through the through-hole, and the dirt-separating plate 11 is movably sleeved on the guide post 10. The upper end of the guide post 10 abuts against the bottom of the filter element 4, and the bottom of the filter element 4 abuts against the upper end of the guide post 10 to form a blocking structure to prevent the dirt-separating plate 11 from detaching from the guide post 10.

[0031] The density of the dirt-separating plate 11 is lower than that of water. When water enters the system, the dirt-separating plate 11 floats up under the action of buoyancy, away from the water inlet 11, and does not affect the water intake. Specifically, the dirt-separating plate 11 can be made of low-density synthetic rubber material, such as low-density polyethylene, polypropylene, etc.

[0032] The upper end of the inlet 11 is fully connected to the lower end of the filter chamber 3, and the connection between the two allows the bottom surface of the filter element 4 to pass through completely. A support frame 12 is provided around the inlet chamber 2, and the lower edge of the filter element 4 is supported on the support frame 12. The radial dimension of the dirt separation plate 11 is smaller than the radial dimension of the bottom surface of the filter element 4. When the dirt separation plate 11 floats to the bottom surface of the filter element 4, it will not completely block the water from flowing into the filter chamber 3, and will only block a small part, thus not affecting the flow of water from the inlet chamber 2 into the filter chamber 3.

[0033] However, when the filter needs cleaning, remove the filter vertically from the fish tank. Under the influence of gravity, the water in the filter will flow down from the inlet 11. At this time, the dirt separation plate 11 will move down under the influence of gravity and seal the inlet 11, so that fish feces and other debris in the filter chamber 3 cannot flow back into the fish tank.

[0034] Furthermore, the impeller cavity 5 is connected above the filter cavity 3, and the connection port 13 between the impeller cavity 5 and the filter cavity 3 is directly below the impeller 6. A spacer support 14 extending into the filter cavity 3 is provided at the connection port 13. The spacer support 14 is composed of multiple support strips distributed in a radial pattern, and the spacers between the support strips form a gap that communicates with the connection port. Water flows through this gap without affecting the water flow between the filter cavity 3 and the impeller cavity 5.

[0035] The spacer bracket 14 is pressed onto the filter element 4, leaving a space between the filter element 4 and the connecting port 13, which facilitates water flow between the filter chamber 3 and the impeller chamber 5.

[0036] The water outlet chamber 8 is located above the impeller chamber 5. The power chamber is formed by bulging upwards from the bottom of the water outlet chamber 8, and the power chamber is sealed within the water outlet chamber 8. The filter element 4 can be made of filter cotton.

[0037] The working principle of this dirt-separating filter is as follows: Water from the fish tank enters through the bottom inlet 11 of the filter. The water flow pushes the dirt-separating plate 11 upward. The water flows through the gap between the dirt-separating plate 11 and the inlet 11 into the filter chamber 3. Then, it passes through the internal filter cotton to filter out impurities in the water. The filtered water is finally discharged from the fish tank by a centrifugal pump, completing the filtration process of the fish tank water quality. When cleaning is required, the filter is removed from the fish tank. Under the action of gravity, the water will flow down from the filter inlet 11. The dirt-separating plate 11 seals the filter inlet 11 under the action of gravity, so that fish feces and other impurities cannot flow back into the fish tank.

[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 dirt-separating type filter including a water inlet unit, a water outlet unit, and a filter main body, characterized by, The water inlet unit includes an inlet located at the bottom of the filter and an inlet cavity communicating with the inlet above the inlet. A dirt-separating plate covering the inlet is provided in the inlet cavity. The density of the dirt-separating plate is lower than that of water. A guide post is provided in the inlet cavity along the water inlet direction. The dirt-separating plate has a through-hole corresponding to the guide post and with a diameter larger than the outer diameter of the guide post. The guide post passes through the through-hole, and the dirt-separating plate is movably fitted onto the guide post. A blocking structure is provided at the upper end of the guide post to prevent the dirt-separating plate from detaching from the guide post. When the dirt-separating plate is at its lowest position on the guide post, it covers the inlet.

2. The dirt-separating filter according to claim 1, characterized in that, The filter body includes a water pump unit and a filter unit located at the lower end of the water pump unit. The filter unit includes a filter chamber connected above the water inlet chamber and a filter element disposed in the filter chamber. The upper end of the guide post abuts against the bottom of the filter element, and the bottom of the filter element abuts against the upper end of the guide post to form the blocking structure. The radial dimension of the dirt separation plate is smaller than the radial dimension of the bottom surface of the filter element and the size of the connection between the water inlet and the filter chamber.

3. The dirt-separating filter according to claim 2, characterized in that, The water inlet chamber is surrounded by a support frame, and the filter element is supported on the support frame.

4. The contaminant-separating filter according to claim 2, wherein The water pump unit includes an impeller chamber communicating with the filter chamber, a power chamber adjacent to the impeller 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.

5. The contaminant-separating filter according to claim 4, wherein The impeller cavity is connected above the filter cavity, and the communication port between the impeller cavity and the filter cavity is directly below the impeller. A spacer bracket extending into the filter cavity is provided at the communication port. The spacer bracket has a space communicating with the communication port. The spacer bracket is pressed on the filter element, so that there is a space between the filter element and the communication port.

6. The contaminant-separating filter according to claim 4, wherein The water outlet unit includes a water outlet chamber and a water outlet communicating with the water outlet chamber. The impeller chamber and the water outlet chamber are connected by a communication channel. The water outlet is located on the upper front side of the filter.

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