Anti-siphon structure of water inlet pipeline of aquarium

Abstract

The anti-siphon structure of the aquarium water inlet pipeline comprises a three-way pipe, a first pipe opening and a second pipe opening of the three-way pipe are both connected with the water inlet pipeline, a ventilation valve is installed in a third pipe opening and comprises a ventilation pipe, a blocking part and a valve element piece, and a sealing ring installation groove is formed in the outer wall of the ventilation pipe. The sealing ring is arranged on the sealing ring mounting groove and is in closed contact with the inner wall of the third pipe orifice, the breather pipe is connected with the blocking part through a connecting strip, a guide hole is formed in the blocking part, the valve element piece comprises a guide rod penetrating through the guide hole in a matched mode and a piston arranged at the end of the guide rod, and the piston is located between the breather pipe and the blocking part. And the inner wall is matched with the inner wall of the breather pipe. According to the utility model, water in the fish tank can be effectively prevented from being sucked back to the bottom tank below due to siphon effect when the water pump of the aquarium stops working accidentally, so that the inside of the bottom tank cannot overflow to influence the external environment, and the water tank is simple and reasonable in structure and convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of aquariums, specifically an anti-siphon structure for the water inlet pipe of an aquarium. Background Technology

[0002] Cabinet-style aquariums are a common type of aquarium, widely used in homes, businesses, and offices. (Refer to...) Figure 1 As shown, it generally has a top-bottom structure, including a fish tank 1 and a cabinet 2 located below the fish tank. The cabinet is mainly used to house the water treatment equipment for the fish tank. To achieve water circulation in the aquarium, a sump is usually installed in the cabinet. The sump uses filter media to filter the water. The filtered water in the sump is pumped upwards into the fish tank through the inlet pipe 3, realizing the water supply process. At the bottom of the fish tank, there is a drain outlet 4. The drain outlet is covered by two layers of partitions, dividing the space inside the fish tank into a breeding area, a buffer area, and a drainage area. Water in the breeding area can enter the buffer area from the filter port 13 at the lower end of the outer partition 11, and then enter the drainage area from the upper end of the inner partition 12 and flow into the drain outlet 4. The fish tank water is drawn into the sump for filtration by the siphon principle, realizing the water supply process. Thus, the entire circulation of the aquarium is formed through the above-mentioned water supply and drainage processes.

[0003] Since the outlet 31 of the inlet pipe 3 is usually located below the water surface in the aquarium, when the aquarium's water pump stops working due to accidents such as a sudden power outage, the water in the pipe will flow back. The entire inlet pipe will form a siphon to suck the water from the aquarium into the sump. If too much water is sucked in, the water in the sump will overflow and flow into the living environment, affecting people's normal life. It will also require extra cleaning, adding a lot of trouble. Utility Model Content

[0004] The purpose of this invention is to provide an anti-siphon structure for the water inlet pipe of an aquarium, which can prevent backflow in the water inlet pipe.

[0005] The anti-siphon structure of the aquarium water inlet pipe includes a three-way pipe. The first and second ports of the three-way pipe are connected to the water inlet pipe. An air valve is installed in the third port. The air valve includes an air pipe, a blocking part, and a valve core. A sealing ring mounting groove is provided on the outer wall of the air pipe. The sealing ring is set on the sealing ring mounting groove and makes a tight seal with the inner wall of the third port. The air pipe and the blocking part are connected by a connecting strip. A guide hole is provided on the blocking part. The valve core includes a guide rod adapted to pass through the guide hole and a piston set at the end of the guide rod. The piston is located between the air pipe and the blocking part and is adapted to the inner wall of the air pipe.

[0006] The above structure is installed in the aquarium's water inlet pipe, connecting the first and second inlets to the inlet pipe. During normal aquarium use, the water pump draws water into the tank along the inlet pipe. The high pumping pressure causes the water to flow through the three-way connector and into the air valve, applying force to the valve core towards the outside of the third inlet. The guide rod moves along the guide hole, and guided by the guide rod, the piston moves towards the air pipe and eventually fits into it. Under water pressure, the piston is fixed in the air pipe, and the sealing ring on the outer wall of the air pipe also makes a tight seal with the inner wall of the third inlet, ensuring a complete seal and preventing external air from entering. In the inlet pipe, water is normally pumped into the aquarium. When the water pump stops working due to an accident such as a sudden power outage, the water in the inlet pipe begins to flow back, creating negative pressure inside the pipe. At this time, the piston of the valve core will gradually disengage from the vent pipe under the pressure of external air pressure and move towards the blocking part under the guidance of the guide rod. This allows external air to enter the vent pipe, and the air pressure in the inlet pipe will be equal to the external air pressure, thus preventing a siphon effect and preventing further backflow in the inlet pipe. This avoids water in the aquarium being sucked into the lower sump. Furthermore, the blocking part restricts the movement range of the valve core, preventing it from detaching from the vent valve and entering the pipe. Therefore, this structure effectively prevents water in the aquarium from being sucked back into the lower sump due to a siphon effect when the aquarium water pump unexpectedly stops working, preventing the sump from overflowing and affecting the external environment. Its structure is simple, its design is reasonable, and it is easy to use. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the overall structure of a cabinet-type aquarium.

[0008] Figure 2 This is a schematic diagram of the T-shaped pipe structure for the anti-siphon structure of the water inlet pipe in this embodiment.

[0009] Figure 3 This is an exploded view of the anti-siphon structure of the water inlet pipe in this embodiment.

[0010] Figure 4 This is a schematic diagram of the vent valve.

[0011] Figure 5 This is a schematic diagram of the structure of the vent pipe and the blocking part.

[0012] Figure 6 This is a schematic diagram of the valve core component.

[0013] Figure 7 For this embodiment along Figure 2 A cross-sectional view of the piston in the AA direction when it is blocked.

[0014] Figure 8 For this embodiment along Figure 2A cross-sectional view of the piston in the AA direction with the piston in a disengaged state.

[0015] In the diagram: 1-Fish tank; 11-Outer partition; 12-Inner partition; 13-Filter port; 2-Base cabinet; 3-Inlet pipe; 31-Outlet; 4-Drain port; 100-T-connector; 110-First pipe port; 120-Second pipe port; 130-Third pipe port; 200-Aeration valve; 210-Aeration pipe; 220-Blocking part; 221-Inner groove; 230-Valve core; 240-Sealing ring mounting groove; 250-Sealing ring; 260-Connecting strip; 270-Guide hole; 280-Guide rod; 281-Guide strip; 290-Piston; 291-Groove. Detailed Implementation

[0016] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0017] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0018] If the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, the technical features of each embodiment can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the embodiments are described; however, as long as these combinations of technical features do not contradict each other, they should all be considered within the scope of this specification.

[0019] like Figures 1 to 8As shown, this embodiment provides an anti-siphon valve structure for an aquarium, including a three-way pipe 100. The first port 110 and the second port 120 of the three-way pipe 100 are both connected to the water inlet pipe 3. An air valve 200 is installed in the third port 130. The air valve 200 includes an air pipe 210, a blocking part 220, and a valve core 230. A sealing ring mounting groove 240 is provided on the outer wall of the air pipe 210, and a sealing ring 250 is disposed in the sealing ring mounting groove. The vent pipe 210 is in sealed contact with the inner wall of the third port 130 on the groove 240. The vent pipe 210 and the blocking part 220 are connected by a connecting strip 260. The blocking part 220 is provided with a guide hole 270. The valve core 230 includes a guide rod 280 adapted to pass through the guide hole 270 and a piston 290 provided at the end of the guide rod 280. The piston 290 is located between the vent pipe 210 and the blocking part 220 and is adapted to the inner wall of the vent pipe 210.

[0020] like Figure 1 As shown, the above structure is installed in the water inlet pipe 3 of the aquarium, so that the first port 110 and the second port 120 are connected to the water inlet pipe 3. The sealing ring 250 is set on the sealing ring mounting groove 240. The air valve 200 is installed in the third port 130, so that the sealing ring 250 is interference-fitted with the inner wall of the third port 130, ensuring that it forms a tight contact with the inner wall of the third port 130, and the air valve 200 can be stably installed in the third port 130. The vent pipe 210 and the blocking part 220 are connected by several connecting strips 260. Water from the inlet pipe 3 can enter the vent valve 200 through the gaps between the connecting strips 260, or enter the vent valve 200 through the gap between the inner wall of the guide hole 270 and the outer side of the guide rod 280, so as to provide pressure to the valve core 230 to the outside of the third port 130. A certain distance is provided between the vent pipe 210 and the blocking part 220 to limit the movable range of the piston 290 on the valve core 230.

[0021] When the aquarium is in normal use, the water pump draws water into the aquarium 1 through the inlet pipe 3. The high pumping pressure causes the water to flow through the three-way pipe 100 and into the air valve 200, providing force to the valve core 230 towards the outside of the third opening 130. Its guide rod 280 moves along the guide hole 270. Guided by the guide rod 280, the piston 290 moves towards the air pipe 210 and eventually fits into the air pipe 210. Under water pressure, the piston 290 is fixed in the air pipe 210, thus blocking it. Figure 7 As shown, the sealing ring 250 on the outer wall of the vent pipe 210 is also in tight contact with the inner wall of the third pipe opening 130, so that the third pipe opening 130 is completely sealed and external air will not pass into the water inlet pipe 3, and the water inlet pipe 3 can normally draw water into the fish tank 1.

[0022] When the water pump stops working due to an accident such as a sudden power outage, the water in the inlet pipe 3 begins to flow back, creating a negative pressure inside the pipe. At this time, the piston 290 on the valve core 230 will gradually disengage from the vent pipe 210 under the pressure of external air pressure, and move towards the blocking part 220 under the guidance of the guide rod 280, thus releasing it into a disengaged state. Figure 8 As shown, the air inlet pipe 210 allows external air to pass through, and the air pressure in the water inlet pipe 3 will be equal to the external air pressure, thus preventing a siphon effect and preventing further backflow in the water inlet pipe 3. This avoids the water in the fish tank 1 being sucked into the bottom tank below, and the blocking part 220 can limit the range of movement of the valve core 230, preventing it from detaching from the air inlet valve 200 and entering the pipe.

[0023] Therefore, the above structure can effectively prevent water in the aquarium from being drawn back to the bottom tank due to the siphon effect when the water pump stops working unexpectedly, so that the bottom tank will not overflow and affect the external environment. Its structure is simple, reasonable and easy to use.

[0024] like Figure 7 , Figure 8 As shown, the end of the piston 290 that contacts the inner wall of the air pipe 210 is an arc surface. With the above shape, when the aquarium is in normal use, the piston 290 can smoothly be inserted into the inner wall of the air pipe 210 under the action of water pressure to ensure its fixation. When the water pump stops working, the piston 290 can also be smoothly released under the action of external pressure to avoid getting stuck on the air pipe 210 and being unable to detach in time.

[0025] The piston 290 also has a groove 291 on its inner side, such as Figure 6 As shown, when water flows into the vent valve 200, the groove 291 can provide a larger water pressure action area for the piston 290, ensuring the movement of the piston 290. The existence of the space in the groove 291 can reduce the situation where the piston 290 is not moving smoothly due to adhesion to the blocking part 220.

[0026] The guide rod 280 is provided with multiple guide strips 281 at intervals, such as Figure 6 The gaps between the guide bars 281 facilitate the entry of water in the pipeline into the vent valve 200 through the larger gap between the guide hole 270 and the guide rod 280 to push the piston 290. It also reduces the contact area between the guide rod 280 and the inner wall of the guide hole 270, reduces the frictional resistance of the guide rod 280 moving along the guide hole 270, and makes its movement smoother.

[0027] The width of the blocking part 220 can gradually narrow from the outside to the inside along the third pipe opening 130, so as to adapt it to the internal structure of the tee pipe 100, ensuring that the outer end of the blocking part 220 can block the piston 290 while reducing the impact of its inner end on the water flow in the original pipe. Furthermore, as... Figure 5, Figure 7 , Figure 8 As shown, the blocking part 220 is also provided with an inner groove 221 at one end near the piston 290, so that there is a sufficient gap between the piston 290 and the blocking part 220. Water in the pipeline can enter the inner groove 221 to provide a larger water pressure action area for the piston 290, which helps the piston 290 move.

[0028] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. An anti-siphon structure for an aquarium water inlet pipe, characterized in that, The system includes a three-way pipe (100), the first port (110) and the second port (120) of which are connected to the water inlet pipe. A vent valve (200) is installed in the third port (130). The vent valve (200) includes a vent pipe (210), a blocking part (220), and a valve core (230). A sealing ring mounting groove (240) is provided on the outer wall of the vent pipe (210). A sealing ring (250) is set on the sealing ring mounting groove (240) and connected to the third port (110). The inner wall of the valve core (230) is in sealed contact with the vent pipe (210) and the blocking part (220) are connected by a connecting strip (260). The blocking part (220) is provided with a guide hole (270). The valve core (230) includes a guide rod (280) adapted to pass through the guide hole (270) and a piston (290) provided at the end of the guide rod (280). The piston (290) is located between the vent pipe (210) and the blocking part (220) and is adapted to the inner wall of the vent pipe (210).

2. The anti-siphon structure for the aquarium water inlet pipe according to claim 1, characterized in that, The end of the piston (290) that contacts the inner wall of the vent pipe (210) is an arc surface.

3. The anti-siphon structure for the aquarium water inlet pipe according to claim 1, characterized in that, The piston (290) has a groove (291) on its inner side.

4. The anti-siphon structure for the aquarium water inlet pipe according to claim 1, characterized in that, The guide rod (280) is provided with a plurality of guide strips (281) spaced apart.

5. The anti-siphon structure for the aquarium water inlet pipe according to claim 1, characterized in that, The blocking part (220) is also provided with an inner groove (221) at one end near the piston (290).

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