Plastic exhaust valve with embedded metal interface and double-layer filter screen
By using a plastic material design with embedded metal interface with double-layer filter in the exhaust valve, the existing exhaust valves have been solved in terms of cost, sealing and filtering effect, and efficient filtration and water flow are achieved, extending the service life of the equipment and reducing maintenance costs.
Patent Information
- Application Number
- CN202421679684.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-16
AI Technical Summary
Existing exhaust valves have shortcomings in cost, sealing and filtering effects, especially the cost of all metal valves, while all plastic valves are prone to leakage and the single-layer filter cannot effectively filter fine impurities, resulting in loss of internal components and reduced performance.
The plastic exhaust valve design is designed with an embedded metal interface with a double-layer filter. The structural strength and sealing performance are improved through the embedded metal interface, and a double-layer filter and stainless steel ball are installed in the embedded metal interface to achieve efficient filtration and suppression of water flow.
The design effectively filters out fine impurities in the water flow, extends the service life of the exhaust valve and related system equipment, reduces maintenance needs and costs, and improves the operating efficiency and silent performance of the system.
Smart Images
Figure CN222798245U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an automatic exhaust valve, in particular to an exhaust valve made of plastic material with an embedded metal interface and a double-layer filter screen. Background Art
[0002] In modern heating, cooling and hot water systems, the efficiency and reliability of automatic exhaust valves are critical to the performance of the entire system. However, existing exhaust valve designs, especially those made of a single material, often have deficiencies in cost, sealing and filtering effects. In particular, all-metal valves are stable but expensive, while all-plastic valves are light but prone to leakage, and conventional single-layer filters cannot effectively filter fine impurities, resulting in internal component loss and reduced performance. Therefore, the development of an exhaust valve that is both economical and can provide superior sealing and strong filtration has become an urgent need in the industry. In addition, some automatic exhaust valves have also tried to be made of plastic materials to reduce cost and weight, but when plastic exhaust valves are connected to metal pipes, they are prone to sealing problems at the interface, resulting in air or water leakage. Therefore, how to reduce the cost and weight of the automatic exhaust valve while ensuring its stability and sealing has become an urgent problem to be solved in the industry. Utility Model Content
[0003] In order to solve the above problems, the utility model provides a plastic exhaust valve with an embedded metal interface and a double-layer filter screen.
[0004] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:
[0005] A plastic exhaust valve with an embedded metal interface and a double-layer filter, comprising a shell, the shell material is plastic, an embedded metal interface is embedded in the lower end interface of the shell, a first sealing ring is arranged between the outer side of the embedded metal interface and the inner side of the lower end interface of the shell, and a double-layer filter is arranged in the embedded metal interface; a stainless steel ball is arranged in the double-layer filter, which can filter impurities and inhibit water flow, prevent some impurities in the system from entering the exhaust chamber, extend the service life, and reduce the use cost. The design structure is simple, compact, easy to install and maintain.
[0006] Furthermore, the double-layer filter screen includes a first filter screen and a second filter screen, the first filter screen is a cylinder without a bottom cover, the top surface of the first filter screen is a filter screen surface, and the second filter screen is combined with the first filter screen to form a hollow cylinder with filter screen surfaces on both the upper and lower surfaces.
[0007] Furthermore, an inner cavity is provided in the shell, and a float that can float up and down is provided in the cavity; the hook on the upper part of the float is connected to the connecting rod. Through the position of the liquid in the float, the change of buoyancy causes the float to float up and down, thereby driving the opening and closing of the connecting rod. When the exhaust port is opened, the gas in the system is exhausted. When the gas in the system is exhausted, the float drives the connecting rod to close the exhaust port, close the exhaust channel, and prevent the liquid in the inner cavity from flowing out. In addition to automatically completing the opening and closing, the exhaust port can also be manually closed by turning the cap.
[0008] The metal inserts are embedded in the main body of the plastic shell to ensure the strength during use. It can also well take into account the requirements of weight and insulation and heat insulation.
[0009] Furthermore, a second sealing ring is provided on the outside of the embedded metal interface. This structural design effectively reduces the work intensity during installation and improves the reliability of the seal. A wrench position is provided in the embedded metal interface, which facilitates the torque control requirements during assembly and the convenience of tool installation.
[0010] Furthermore, the first sealing ring disposed between the embedded metal interface and the shell body plays a good sealing role.
[0011] Furthermore, there is a float in the exhaust valve housing, and the float is connected to the connecting rod. The up and down movement of the float drives the opening and closing of the connecting rod; a silicone gasket for sealing is provided on the connecting rod, and the silicone gasket is opened and closed by the opening and closing of the connecting rod; the exhaust cover supports the connecting rod and serves as an exhaust hole; the upper cover is used to fix the exhaust cover, and the exhaust cover is assembled to a suitable position by pressing the upper cover and sealed by a sealing ring; the screw cap installed on the exhaust cover facilitates the automatic shutoff of the exhaust valve.
[0012] Furthermore, a circular buckle hole is provided at the upper end of the stainless steel connecting rod, which can match the connecting column provided at the lower end of the exhaust cover. The circular buckle hole provided at the upper end of the stainless steel connecting rod is rotated through the connecting column provided at the lower end of the exhaust cover.
[0013] Furthermore, a barb is provided at the upper end of the float, and the barb provided at the upper end of the float is hung on the lower end of the stainless steel connecting rod.
[0014] Furthermore, the grooves on the surface of the float are arranged in multiple rows horizontally and vertically, and the float is designed as a hollow diversion. The hollow diversion design means that the inside of the float is a hollow structure, and diversion holes are arranged on both sides of the top of the float.
[0015] The utility model has the following beneficial effects: through the innovative combination of the double-layer filter screen and the stainless steel ball embedded in the metal interface, the exhaust valve can more effectively filter out fine impurities and particles in the water flow. This efficient filtering system not only prolongs the service life of the exhaust valve and related system equipment, but also protects the system from contaminants, reducing maintenance requirements and costs.
[0016] The stainless steel ball helps to suppress and control the water flow, reducing turbulence and possible noise when passing through the valve, thereby improving the operating efficiency and quietness of the entire system. This improvement is especially important for heating and cooling systems that require a low noise environment.
[0017] The design of the metal interface embedded in the plastic shell combines the lightness of plastic and the strength of metal, ensuring the structural strength and durability of the exhaust valve when it is installed under large torque. At the same time, the first and second sealing rings significantly improve the sealing performance at the interface, effectively preventing potential air and water leakage problems. The wrench position in the embedded metal interface design makes torque control during installation easier and tool installation faster. This design takes into account the convenience of the installers and greatly shortens the installation and maintenance time. The hollow diversion design of the float not only saves materials, but also optimizes the flow path of the gas and enhances the exhaust efficiency. In addition, by reducing the use of materials, the production cost is also reduced accordingly, making the exhaust valve more competitive in the market. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic explosion diagram of a specific embodiment of the utility model.
[0019] Figure 2 It is a schematic structural diagram of a specific embodiment of the utility model.
[0020] Figure 3 The figure is a schematic diagram of the appearance structure of a specific embodiment of the utility model. DETAILED DESCRIPTION
[0021] The specific implementation of the utility model will be described in detail below with reference to the accompanying drawings.
[0022] An automatic exhaust valve comprises an automatic exhaust valve housing body (2) assembled with an embedded metal interface (4). A screw cap (14) is provided on the exhaust nozzle of the upper cover (13) of the housing for sealing the exhaust nozzle. When the pressure in the system is lower than the external air pressure, the screw cap (14) needs to be tightened to prevent air from flowing back into the system, and the exhaust valve needs to be manually closed. When liquid is injected into the system, the gas in the system needs to be emptied, and the exhaust valve needs to be manually opened, that is, the screw cap (14) needs to be loosened. The automatic exhaust valve will perform automatic exhaust. When a certain amount of gas is accumulated in the inner cavity of the automatic exhaust valve in the system, the weight of the float (9) is greater than the buoyancy of the float, and the float (9) drives the connecting rod (10) to open the exhaust port in the exhaust cover (12) for automatic exhaust. When the gas in the system is exhausted, the weight of the float (9) is less than the buoyancy, and the float (9) drives the connecting rod (10) to close the exhaust port in the exhaust cover (12), and the automatic exhaust ends.
[0023] The embedded metal interface (4) is installed with a second sealing ring (5), and after installation, a good sealing effect is achieved through radial sealing of the sealing ring; the embedded metal interface (4) is provided with a wrench position for easy installation.
[0024] A first filter screen (6) and a second filter screen (7) are arranged in the embedded metal interface (4), and a stainless steel ball (8) is arranged between the first filter screen (6) and the second filter screen (7), which can filter impurities and inhibit water flow, prevent some impurities in the system from entering the exhaust chamber, extend the service life, and reduce the use cost. The design structure is simple, compact, and easy to install and maintain.
[0025] The embedded metal interface (4) and the shell body (2) are assembled by threaded assembly technology. The embedded metal interface (4) is assembled in the shell (2), and a first sealing ring (3) is added between the two. Through the radial sealing of the sealing ring, a good sealing effect is achieved.
[0026] The connecting rod (10) and the exhaust cover (12) are sealed by a silicone gasket (11), and the good sealing performance of the silicone gasket achieves automatic closing after automatic exhaust.
[0027] The exhaust cover (12) and the housing body (2) are combined by the middle sealing ring (1) and the upper cover (13). The upper cover (13) is pressed into the housing body (2) when assembled. The exhaust cover (12) and the housing body (2) are combined, and the middle sealing ring (1) performs effective sealing.
[0028] The end of the buoy (9) is provided with a barb, and the barb arranged at the upper end of the buoy (9) is hung on the lower end of the stainless steel connecting rod (10).
[0029] The grooves on the surface of the float (9) are arranged in multiple rows horizontally and vertically, and the float is designed as a hollow diversion. The hollow diversion design means that the inside of the float is a hollow structure, and diversion holes are arranged on both sides of the top of the float.
[0030] In summary, the technical solution proposed by the utility model has a shell body made of plastic material and an embedded metal interface. A sealing ring is used to seal the embedded metal interface and the plastic material of the main body. The embedded metal interface has a wrench position. The upper cover and the shell adopt an inverted buckle structure, which is pressed into the inverted buckle for assembly. A double-layer filter is set in the embedded metal interface; a stainless steel ball is set in the double-layer filter, which can filter impurities and inhibit water flow, prevent some impurities in the system from entering the exhaust chamber, extend the service life, and reduce the cost of use. The design structure is simple, compact, easy to install and maintain.
[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention based on the technical solution and improved concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A plastic exhaust valve with an embedded metal interface and a double-layer filter, comprising a shell, the shell material is plastic, an embedded metal interface is embedded in the lower end interface of the shell, a first sealing ring is arranged between the outer side of the embedded metal interface and the inner side of the lower end interface of the shell, a double-layer filter is arranged in the embedded metal interface; a stainless steel ball is arranged in the double-layer filter.
2. A plastic exhaust valve with a built-in metal interface and a double-layer filter as claimed in claim 1, characterized in that: The double-layer filter screen includes a first filter screen and a second filter screen, the first filter screen is a cylinder without a bottom cover, the top surface of the first filter screen is a filter screen surface, and the second filter screen is combined with the first filter screen to form a hollow cylinder with filter screen surfaces on both the upper and lower surfaces.
3. A plastic exhaust valve with a built-in metal interface and a double-layer filter as claimed in claim 1, characterized in that: An inner cavity is provided in the shell, and a float that can float up and down is arranged in the cavity; a hook on the upper part of the float is connected to a connecting rod, and the position of the liquid in the float and the change of buoyancy cause the float to float up and down, thereby driving the opening and closing of the connecting rod.
4. A plastic exhaust valve with a built-in metal interface and a double-layer filter as claimed in claim 1, characterized in that: A second sealing ring is also arranged on the outside of the embedded metal interface, and a wrench position is arranged inside the embedded metal interface.
5. A plastic exhaust valve with a built-in metal interface and a double-layer filter as claimed in claim 3, characterized in that: There is a float with a groove in the inner cavity of the shell, and the upper end of the float is assembled on the lower end of the stainless steel connecting rod, and the upper end of the stainless steel connecting rod is assembled with the exhaust cover. The upper end of the stainless steel connecting rod is provided with a circular buckle hole that can match the connecting column provided at the lower end of the exhaust cover, and the circular buckle hole provided at the upper end of the stainless steel connecting rod is rotated through the connecting column provided at the lower end of the exhaust cover.
6. A plastic exhaust valve with a built-in metal interface and a double-layer filter as claimed in claim 3, characterized in that: A barb is arranged at the upper end of the buoy, and the barb arranged at the upper end of the buoy is hung on the lower end of the stainless steel connecting rod.
7. A plastic exhaust valve with a built-in metal interface and a double-layer filter as claimed in claim 1, characterized in that: The grooves on the surface of the buoy are distributed in multiple rows horizontally and vertically, and the buoy is designed as a hollow diversion.
8. A plastic exhaust valve with a built-in metal interface and a double-layer filter as claimed in claim 1, characterized in that: A screw cap is provided on the exhaust nozzle of the upper cover of the shell for sealing the exhaust nozzle.