An air-permeable stick for a vase or fish tank
By designing a breathable rod, and utilizing breathable tubes and a hydrophobic breathable membrane to achieve gas exchange inside vases or fish tanks, the problem of insufficient ventilation in traditional vases or fish tanks is solved, oxygen concentration is increased, energy consumption and noise are reduced, and the aesthetics are enhanced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN POLYTECHNIC UNIV
- Filing Date
- 2025-06-10
- Publication Date
- 2026-06-19
AI Technical Summary
Traditional vases or fish tanks lack a ventilation system, resulting in low gas exchange rates. Frequent water changes and the addition of extra ventilation devices lead to noise pollution and energy consumption, which affect the growth and aesthetics of the fish.
Design a breathable rod comprising a breathable tube and a fixing device. The inner wall of the breathable tube is connected to the atmosphere, the breathable membrane is in contact with water, the supporting mesh provides support, the hydrophobic breathable membrane introduces air into the water, and the fixing device prevents floating by using a weight or suction cup for fixing.
It increases the oxygen content in the water, reduces the frequency of water changes, lowers energy consumption and noise pollution, enhances the aesthetics, and is easy to install with no safety hazards.
Smart Images

Figure CN224368479U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a breathable rod for vases or fish tanks, specifically an oxygenation device that transmits air into water through a hydrophobic breathable membrane. Technical Background
[0002] Traditional fish tanks or vases lack a bottom aeration system, relying solely on the top opening for air exchange. This results in low gas exchange rates, failing to provide sufficient oxygen for the fish or plants and necessitating frequent water changes. However, frequent water changes are unsuitable for the hectic lifestyles of modern young people. Adding additional aeration devices, such as air pumps, is problematic due to their noise pollution and continuous power consumption. Furthermore, the airflow from these devices can negatively impact fish growth and create a cluttered, unsightly environment. Therefore, a low-carbon, environmentally friendly, natural, and quiet aeration system is needed to meet the needs of modern living. Summary of the Invention
[0003] To address the aforementioned problems, the purpose of this invention is to provide a breathable aerator that promotes gas exchange, increases oxygen levels in water, and eliminates the need for frequent water changes. This increases the oxygen content in vases or aquariums, solving the problem of traditional vases and aquariums being poorly aerated. This invention is ready to use simply by inserting it into water, requires no electricity, reducing energy consumption, and can be designed in various shapes, offering superior aesthetics compared to other oxygenation products. This invention provides the following technical solutions:
[0004] A breathable rod for vases or fish tanks is characterized by its structure comprising: a breathable tube and a fixing device; wherein, the upper side of the breathable tube has an open structure, the opening height of which is higher than the water surface, allowing the inner wall of the breathable tube to communicate with the atmosphere; the tube wall comprises two layers in the thickness direction, one layer being a support mesh tube that provides support and fixation, and the other layer being a hydrophobic breathable membrane that is in direct contact with water; the support mesh tube supports the breathable membrane to maintain its extension, and the support mesh tube has a hollow structure, the hollow holes providing ventilation channels, allowing the air communicating with the tube to be introduced into the water through the hollow channels, thereby achieving the function of ventilation; the fixing device prevents the breathable rod from floating and provides the pulling force for sinking into the water, the fixing device can be a weight, using gravity to sink the tube into the water, or the fixing device can be a suction cup, allowing the breathable tube to be suctioned to the bottom of the vase or fish tank; the breathable tube has a sealed structure, preventing water from entering the tube. The supporting mesh tube and the breathable membrane are designed with point contact or line contact support structures, thereby reducing the contact area between the supporting mesh tube and the breathable membrane and increasing the area of direct contact between the air inside the tube and the breathable membrane, thus increasing the area where water and the breathable membrane can exchange gases. The supporting mesh tube can have a certain degree of elasticity or stretching capacity along its length, and can be a woven structure or a spiral structure, allowing for manual adjustment of the shape of the supporting mesh tube. The hydrophobic breathable membrane can be made of an elastic material.
[0005] The support mesh tube is designed with a hollow structure, which has a large air-permeable area. The surface of the support mesh tube can be designed with a dotted raised structure, so that the breathable membrane and the support mesh tube make point and line contact, avoiding complete adhesion between the mesh tube and the membrane, and increasing the contact area between the membrane and the air.
[0006] Hydrophobic and breathable membranes use excellent waterproof and breathable materials, such as polytetrafluoroethylene membrane materials, polyurethane membrane materials, and PDMS membrane materials, which have good breathability and are hydrophobic and breathable.
[0007] Preferably, the ventilated tube is characterized in that: the supporting mesh tube and the film material are not completely bonded, but a unique membrane support structure is adopted, allowing for a large gap between the membrane and the supporting mesh tube to allow gas to flow.
[0008] Supporting network tubes can be made of materials such as metal, composite materials, plastics, and ceramics.
[0009] When a suction cup is used to secure the ventilator, it can be connected to the ventilator tube using methods such as threaded connection, adhesive fixation, or clips. Alternatively, a weighted device can be used to secure the ventilator, where a dense weight is fixed to the bottom of the tube, causing the ventilator to sink into the water.
[0010] The supporting mesh can have a certain degree of elasticity or stretching capacity along its length, and can be a woven structure or a spiral structure. At the same time, the hydrophobic and breathable membrane also uses an elastic breathable membrane material, such as PDMS. The elasticity ensures that the breathable membrane can be stretched without wrinkling within a certain deformation range. In this way, the breathable rod can stretch and contract freely to a certain extent. As long as the opening of the breathable rod is outside the water surface, the shape of the breathable rod can be changed at will, which is beneficial to the aesthetic decoration of the aquarium landscape. In addition, by using a longer elastic breathable rod, it can be deformed into a spiral shape and placed in a vase or aquarium, which can increase the area of the breathable membrane, that is, the area for gas exchange between water and air, to achieve better breathability.
[0011] Compared with existing technologies, this invention offers the following advantages: By introducing air channels into vases or fish tanks, it increases the surface area of contact between water and air, facilitating gas exchange and thereby increasing the oxygen concentration in the water. This replaces traditional fish tank air pumps, reducing energy consumption and noise pollution, and decreasing the frequency of water changes, thus preventing water waste. The superior permeability of this aeration rod further increases the oxygen concentration in the vase or fish tank, enabling the co-culture of flowers and fish. Furthermore, this product requires no electricity, produces no noise, is easy to install and use, poses virtually no safety hazards, and will not harm the aquatic organisms.
[0012] When this breathable rod is used in a vase, it not only provides an oxygen transport channel to the bottom of the vase, increasing the oxygen content in the water, but also serves as a support for the flowers, allowing them to stand upright in the vase and enhancing its aesthetic appeal.
[0013] This utility model's ventilation rod is designed with user-friendliness in mind, and its installation and use are extremely simple: just insert it into the bottom of the fish tank or vase, without any complicated installation steps. Moreover, once installed, the ventilation rod requires almost no additional maintenance, and the product is durable, greatly improving user convenience. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of a ventilator for a vase or fish tank according to an embodiment of the present invention.
[0015] Figure 2 This is a cross-sectional view along the length of the vent tube of a vent rod for a vase or fish tank according to an embodiment of the present invention.
[0016] Figure 3 This is a schematic diagram of a woven texture structure for a breathable bar used in a vase or fish tank, according to one embodiment of this utility model.
[0017] Figure 4 This is a schematic diagram of the venting tube structure of a venting rod for a vase or fish tank according to Embodiment 2 of this utility model.
[0018] Figure 5 This is a schematic diagram of the macroscopic structure of a spiral-shaped venting rod for vases or fish tanks according to Embodiment 3 of this utility model. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Example 1
[0021] A venting rod 10 for vases or fish tanks, the venting rod 10 structurally comprising: a venting tube 11 and a fixing device 12, such as... Figure 1 As shown; the upper side of the vent tube 11 has an open structure, and its opening height is higher than the water surface, so that the inner wall of the vent tube 11 is connected to the atmosphere; the vent rod 10 has a height of 200mm and an outer diameter of 15mm. When in use, it is placed upright in a vase or fish tank, and the suction cup at the bottom is attached to it. The water surface must be lower than the opening of the vent rod.
[0022] The wall of the vent pipe 11 comprises two layers in the thickness direction, as shown in the cross-sectional view below. Figure 2 As shown, one layer is a support mesh tube 111, which provides support and fixation. It is a stainless steel wire braided structure. The other layer is a hydrophobic and breathable membrane 112, made of PDMS and 0.15mm thick, which is in direct contact with water. The support mesh tube 111 supports the breathable membrane 112 to maintain its extension. Because the support mesh tube 111 has a braided structure and perforated holes 113, the hydrophobic and breathable membrane 112 can allow air circulating inside the tube to be introduced into the water through the perforated holes 113, thus achieving a breathable function. Simultaneously, the support mesh tube 111 of this breathable rod 10 has a braided structure. The braided texture makes the outer surface of the support mesh tube not a smooth, flat curved surface, but an undulating curved surface, such as... Figure 3 As shown, the highest point of its outer surface is the protrusion 114 of each braid. Without considering the elasticity of the breathable membrane 112, these protrusions 114 support the breathable membrane 112, so that the supporting mesh tube 111 and the breathable membrane 112 are in point contact, thereby reducing the contact area between the supporting mesh tube 111 and the breathable membrane 112, increasing the area of direct contact between the air inside the tube and the breathable membrane 112, that is, increasing the area where water and the breathable membrane 112 can exchange gases.
[0023] The function of the fixing device at the bottom of the air rod is to prevent the air rod from floating and to provide the pulling force for sinking into the water. The fixing device 12 of this air rod 10 uses a suction cup to make the air tube 11 be sucked to the bottom of the vase or fish tank. The suction cup is fastened to the bottom of the air tube by threads. There is a pressure plate above the suction cup, which makes the air membrane press tightly against the bottom of the support mesh tube 111, thereby ensuring the air tube 11 is sealed and preventing water from entering the tube. This fixing technology is existing technology.
[0024] Example 2
[0025] A type of venting rod 20 for vases or fish tanks, such as Figure 4 As shown, this breathable rod differs from Example 1 only in the material and structure of its supporting mesh tube; all other structures and membrane materials are identical. The supporting mesh tube 21 of this breathable rod 20 is made of transparent polymer material PETG, and is manufactured using 3D printing. Its structure is as follows: Figure 4 As shown. Its surface has small protrusions 23, which are in contact with the breathable membrane 22. This can also reduce the contact area between the supporting mesh tube and the breathable membrane, and increase the area of direct contact between the air inside the tube and the breathable membrane 22, that is, increase the area where water and the breathable membrane can exchange gases.
[0026] Example 3
[0027] A type of venting rod 30 for vases or fish tanks, such as Figure 5 As shown, this breathable rod differs from Example 1 only in the spiral shape of the supporting mesh tube; the weaving structure and material of the supporting mesh tube are the same as in Example 1. The straight length of this breathable rod is 500mm. The supporting mesh tube structure 31 is a spiral structure woven from stainless steel wire, possessing a certain degree of elasticity and stretching capacity along its length. The hydrophobic and breathable membrane is made of PDMS with a thickness of 0.2mm. The PDMS membrane itself is an elastic material, allowing the entire breathable rod to be bent manually to adjust its shape.
Claims
1. An air permeable stick for a vase or fish bowl, characterized in that The aeration rod consists of an aeration tube and a fixing device. The aeration tube has an open structure on the upper side, with the opening height above the water surface, allowing the inner wall of the aeration tube to communicate with the atmosphere. The tube wall has two layers in the thickness direction: a support mesh for support and fixation, and a hydrophobic breathable membrane in direct contact with water. The support mesh supports the breathable membrane and has a perforated structure, with holes providing ventilation channels. The hydrophobic breathable membrane allows the air connected inside the tube to be introduced into the water through the perforated channels, thus achieving the function of ventilation. The fixing device prevents the aeration rod from floating and provides the pulling force to sink it in the water. The fixing device is a weight or suction cup, which presses or suctions the aeration tube to the bottom of the vase or fish tank. The aeration tube has a sealed structure, preventing water from entering the tube.
2. An air stone for use in an aquarium or fish tank as claimed in claim 1 wherein: The supporting mesh tube and the breathable membrane are designed to make point contact or line contact, thereby reducing the contact area between the supporting mesh tube and the breathable membrane and increasing the area of direct contact between the air inside the tube and the breathable membrane, that is, increasing the area where water and the breathable membrane can exchange gases.
3. An air stone for use in a vase or fish tank as defined in claim 1, wherein: The supporting mesh tube is a woven or spiral structure, giving it elasticity or stretching ability along its length; the hydrophobic and breathable membrane is an elastic material, allowing the shape of the breathable rod to be adjusted manually.