Anti-siphon connector for external filter box

Abstract

The utility model discloses an anti-siphon connector for an external filter tank, the connector is provided with an ascending end and a descending end which are communicated with each other, the ascending end is communicated with a water inlet, the descending end is communicated with a water inlet end of a water pump, the descending end is also provided with a notch, and the notch is communicated with a water storage bin; an air inlet is further formed in the rising end and communicated with a water outlet nozzle of the water pump. The ascending end and the descending end of the connector are communicated with the water inlet end of the water pump, and the ascending end and the air inlet communicated with the water outlet nozzle are combined, so that a closed-loop air path can be formed, siphonage after the water pump is powered off can be prevented, the water amount in the water storage bin is maintained, and the problems of dry burning of the water pump, backflow of the filter box and the like caused by power failure are effectively solved.

Description

Technical Field

[0001] This utility model relates to an aquarium filter accessory device, and more specifically, this utility model mainly relates to an anti-siphon connector for an external filter box. Background Technology

[0002] Currently, most filter boxes for aquariums or fish tanks on the market use check valves to prevent siphoning during power outages. However, using mechanical check valves has problems such as high water flow resistance and high maintenance costs. While some existing technologies propose external water pumps to improve the aforementioned siphoning phenomenon, this method does not solve the problem of water retention in the filter box's storage tank after a power outage. Furthermore, mainstream products on the market have a risk of siphon backflow due to their low inlet position. According to the "China Aquarium Equipment White Paper 2023," the aforementioned traditional anti-siphon solutions rely on mechanical check valves, with a failure rate of 17% in actual use, and the start-up failure rate due to insufficient impeller immersion when the water pump is externally mounted exceeds 40%. Therefore, it is necessary to further research and improve the structure of such aquarium filter boxes to address the common power outage siphoning problem. Utility Model Content

[0003] One of the objectives of this utility model is to address the aforementioned shortcomings by providing an anti-siphon connector for external filter boxes. This aims to solve the technical problems in the prior art where, when similar aquariums face power outage siphon issues, the check valve has high water flow resistance, high maintenance costs, and water pump burnout and filter box backflow caused by power outages.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This utility model provides an anti-siphon connector for an external filter box. The anti-siphon connector has an interconnected rising end and a falling end. The rising end is used to connect to the water inlet of the water storage tank, and the falling end is used to connect to the water inlet of the water pump. The falling end also has a notch for connecting to the water storage tank. The upper part of the rising end also has an air inlet, which is connected to the rising end and is also used to connect to the water outlet of the water pump.

[0006] As a preferred embodiment, a further technical solution is that the air inlet is connected to the water outlet of the water pump via a silicone hose.

[0007] A further technical solution is that the notch is arc-shaped, and the distance between the notch and the bottom of the tank is 0.2-0.3 times the diameter of the water pump impeller.

[0008] Compared with the prior art, one of the beneficial effects of this utility model is that by connecting the rising end and falling end of the connector to the water inlet end of the water pump, and combining the air inlet hole connected to the rising end and the water outlet, a closed-loop air path is formed, which can prevent the siphon phenomenon that occurs after the water pump is powered off, maintain the water volume in the water storage tank, and keep the water pump impeller wetted in the water, thereby making the water pump power restoration success rate close to or reaching 100%. This effectively improves the problems of water pump dry burning and filter box backflow caused by power outages. Moreover, compared with mechanical check valves, it has low water flow resistance, is easy to maintain, and can be installed and used in various specifications of external aquarium filters to solve the siphon problem caused by water pump power outages. Attached Figure Description

[0009] Figure 1 This is a structural schematic diagram used to illustrate one embodiment of the present invention.

[0010] Figure 2 for Figure 1 A sectional view.

[0011] Figure 3 for Figure 1 Another directional diagram.

[0012] Figure 4 This is a schematic diagram illustrating the usage state of one embodiment of the present invention.

[0013] Figure 5 This is a structural schematic diagram used to illustrate one embodiment of the present invention.

[0014] In the diagram, 1 is the tank, 11 is the filter chamber, 12 is the water storage chamber, 2 is the partition, 3 is the water pump, 31 is the water outlet, 4 is the water inlet, 5 is the connector, 51 is the rising end, 52 is the falling end, 53 is the notch, 54 is the air inlet, 6 is the guide plate, 7 is the water outlet, 8 is the flow buffer plate, 9 is the water inlet pipe, and 10 is the silicone hose. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] One embodiment of this utility model is an anti-siphon connector for an external filter box. The core problem to be solved by the design of this connector is how to achieve automatic anti-siphon and water pump water retention functions for the external filter box without increasing the complexity of the mechanical structure. (Reference) Figure 1-3As shown, the anti-siphon connector has an ascending end 51 and a descending end 52 that are interconnected. The ascending end 51 is used to connect with the water inlet 4 of the water storage tank 12, and the descending end 52 is used to connect with the water inlet of the water pump 3. The descending end 52 is also provided with a notch 53, which is used to connect with the water storage tank 12. At the same time, the upper part of the ascending end 51 is provided with an air inlet 54, which is connected with the ascending end 51 and is also used to connect with the water outlet 31 of the water pump 3.

[0017] In the preferred embodiment described above, a silicone hose 10 can be used to connect the air inlet 54 and the water outlet 31 of the water pump 3, facilitating the formation of the closed-loop air path. Simultaneously, the notch 53 can be arc-shaped, with the height of the arc-shaped notch preferably designed to be 3-5mm; and the distance between the notch 53 and the bottom of the tank 1 should be 0.2-0.3 times the diameter of the water pump 3 impeller, to ensure effective water replenishment to the water pump 3 after power restoration.

[0018] The connector's rising end 51 and falling end 52 are connected to the water inlet of the water pump 3. Combined with the air inlet connected to the rising end 51 and the water outlet 31, a closed-loop air path is formed. This prevents siphoning after the water pump 3 is powered off, maintains the water volume in the water storage tank 12, and keeps the impeller of the water pump 3 wetted in the water. This makes the water pump's power restoration success rate close to or reaches 100%, effectively improving problems such as water pump dry burning and backflow in the filter box caused by power outages. Compared with mechanical check valves, it has less water flow resistance, is easier to maintain, and can be installed and used in various sizes of external aquarium filters to solve the siphoning problem caused by water pump power outages.

[0019] The following uses a typical external aquarium filter box as an example to illustrate the application of the anti-siphon connector of this utility model.

[0020] refer to Figure 4 As shown, the aquarium filter box includes a lower tank 1, which serves to house the built-in water pump 3 and to perform water storage and filtration. Figure 2 As shown, a partition 2 is designed inside the tank 1, dividing the internal space of the tank 1 into two cavities: a filter chamber 11 and a water storage chamber 12. The height of the partition 2 is less than the depth of the tank 1, allowing the two cavities to communicate with each other through the upper part of the partition 2. In this embodiment, the volume ratio of the filter chamber 11 to the water storage chamber 11 is 1.5-1.2:1. More importantly, in the water storage chamber 12, in addition to installing the water pump 13, a high-level water inlet 4 is provided on its side wall. Preferably, the distance between the water inlet 4 and the bottom of the water storage chamber 12 is 1.2-1.5 times the diameter of the water inlet 14.

[0021] Then, the connector 5 mentioned above is installed on the water storage tank 12. As mentioned above, the function of the connector 5 is to prevent siphoning after the water pump 3 is powered off. Specifically, in the structure of this embodiment, the connector 5 is placed between the water inlet and the water pump 3, and the connector 5 has an interconnected rising end 51 and a falling end 52. The rising end 51 is connected to the aforementioned water inlet 4, while the falling end 52 is connected to the water inlet of the water pump 3. It is worth noting that the aforementioned falling end 52 is not only connected to the water inlet of the water pump, but also has a notch 53. The notch 53 is connected to the water storage tank 12. The function of the notch 53 is to allow water from the water storage tank 12 to be added to the impeller of the water pump 3 when the power is restored after the power is cut off, so that the water pump 3 can be successfully restored. On the other hand, the upper part of the aforementioned rising end 51 is provided with an air inlet 54, which is connected to the rising end 51 and the water outlet 31 of the water pump 3, thereby forming a closed-loop air passage to prevent the water pump 3 from siphoning when the power is cut off, which would cause the water in the water storage tank 12 to be siphoned into the fish tank and affect the normal use of the water pump 3 after the power is restored.

[0022] As Figure 4 As shown, the external aquarium filter box of the above embodiment also has an external structure; for example, a guide plate 6 is added to the filter chamber 11, and two water outlets 7 are set at the rear of the filter material in the filter chamber 11, so that the water outlets 7 are located on the opposite side of the longitudinal guide plate 6. It is worth noting that the distance between the water outlet 7 and the bottom of the tank 1 is less than the distance between the water inlet 4 and the bottom of the tank 1. Specifically, the inventor's preferred value is that the vertical distance between the water outlet 7 and the water inlet is 20-30cm. In other words, the distance between the lowest point of the aforementioned water inlet 4 and the highest point of the water inlet of the water pump 3 is greater than or equal to 8mm. Furthermore, in order to reduce the water flow rate, a sloping flow plate 8 can be designed at the lower part of the aforementioned water outlet 7; at the same time, in order to facilitate the water pump to draw water from the aquarium, the water inlet 4 is connected to a water inlet pipe 9, and the water inlet pipe 9 can extend below the water surface of the aquarium during use.

[0023] refer to Figure 4 and Figure 5 As shown, in a preferred embodiment of the present invention, under normal use, the water storage tank 12 stores water, and the water pump 3 is a submersible pump. After its power is turned on, the impeller of the water pump 3 rotates and draws water from the aquarium through the water inlet pipe 9 into the uppermost drip groove 20 from the water outlet 31. Then, the water drips from top to bottom into the filter chamber 11. After the filter material filled in the filter chamber 11 completes the final filtration, the water after passing through the filter material is returned to the aquarium through the outlet 7 on the opposite side of the guide plate 6 and the slow flow plate 8 under the action of the guide plate 6, thereby realizing the circulation filtration.

[0024] During the above process, through the notch 53 on the lower end 52 of connector 5, a portion of the water pumped by the water pump 3 enters the water storage tank 12 through the notch 53, so that the water storage tank 12 always maintains a certain amount of water. When the liquid level in the water storage tank 12 is too high, it passes over the partition 2 and enters the filter chamber 11. After being filtered by the filter material, it flows back to the fish tank through the outlet 7 and the slow flow plate 8.

[0025] When the water pump 3 is suddenly de-energized, the impeller of the water pump 3 stops rotating, and the suction force generated by the water pump 3 disappears. At this time, a negative pressure is generated in the water inlet pipe 9 (which will cause a reverse siphon phenomenon). Air passes through the water outlet 31 on the upper part of the water pump 3, the silicone hose 10, and the air inlet 54 on the connector 5, and enters the water inlet pipe 9 through the rising end 51 to counteract the negative pressure, preventing the water in the water storage tank 12 from being reversely siphoned into the fish tank by the aforementioned negative pressure. Furthermore, since the height of the water inlet 4 is higher than the water outlet 7 on the filter chamber 11, the liquid level in the water storage tank 12 is not affected by the filter chamber 11 under the action of the baffle 2, so that there is always a certain amount of water in the water storage tank 12, allowing the impeller of the water pump 3 to be submerged in water, preventing the water pump 3 from burning dry after the power is restored, and preventing the filter chamber 11 from flowing back due to the low liquid level in the water storage tank 12.

[0026] When the water pump 3 is powered on again, water in the water storage tank 12 enters the water pump 3 through the notch 53 on the lower end 52 of the connector 5, allowing the impeller of the water pump 3 to rotate while submerged in water. Then, under the action of the inlet 4, the suction is restored. By continuously pumping water from the aquarium into the water storage tank 12 through the inlet pipe 9, the circulation filtration is restarted, thus achieving a power-on success rate of the water pump 3 close to or reaching 100%.

[0027] When the water pump 3 is powered back on, under the action of the connector 5, the water in the water storage tank 12 enters the water pump 3 through the notch 53 on the lower end 52 of the connector 5, causing the impeller of the water pump 3 to rotate while submerged in the water. Then, under the action of the inlet 4, the suction is restored. By pumping the water in the fish tank into the water storage tank 12 through the inlet pipe 9, the circulation filtration restarts. Thus, the success rate of powering back on the water pump 3 can be close to or reach 100% through the connector 5.

[0028] When the anti-siphon connector of this utility model is applied to other aquarium external filter boxes with similar structures, its principle is similar to that of the above embodiments, and will not be described in detail in this specification.

[0029] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this utility model.

[0030] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter combination within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. An anti-siphon connector for an external filter box, characterized in that: The anti-siphon connector has an ascending end (51) and a descending end (52) that are interconnected. The ascending end (51) is used to connect with the inlet (4) of the water storage tank (12), and the descending end (52) is used to connect with the inlet of the water pump (3). The descending end (52) is also provided with a notch (53), which is used to connect with the water storage tank (12). The upper part of the rising end (51) is also provided with an air inlet (54), which is connected to the rising end (51) and is also used to connect to the water outlet (31) of the water pump (3).

2. The anti-siphon connector for an external filter box according to claim 1, characterized in that: The air inlet (54) is connected to the water outlet (31) of the water pump (3) via a silicone hose (10).

3. The anti-siphon connector for an external filter box according to claim 1, characterized in that: The notch (53) is arc-shaped, and the distance between the notch (53) and the bottom of the tank (1) is 0.2-0.3 times the diameter of the impeller of the water pump (3).

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