CN221482806U - Plastic exhaust valve with embedded metal interface - Google Patents

Abstract

The utility model relates to an automatic exhaust valve, in particular to a plastic exhaust valve with an embedded metal interface. The shell comprises an embedded metal interface, and the embedded metal interface can realize the installation with larger torque, thereby improving the reliability and sealing performance of the installation; and a sealing ring is arranged on the embedded metal interface, so that better sealing is ensured. A pontoon is arranged in the exhaust valve casing, the pontoon is connected with the connecting rod, and the pontoon moves up and down to drive the connecting rod to open and close; the connecting rod is provided with a silica gel gasket for sealing, and the silica gel gasket is opened and closed by opening and closing the connecting rod; the exhaust cover plays a role of supporting the connecting rod and is used as an exhaust hole; the upper cover is used for fixing the exhaust cover, and the exhaust cover is assembled at a proper position through press fitting of the upper cover and is sealed through the sealing ring; the spiral cover arranged on the exhaust cover is convenient for closing the automatic exhaust valve.

Description

Plastic exhaust valve with embedded metal interface

Technical Field

The utility model relates to an automatic exhaust valve, in particular to an exhaust valve with a metal interface embedded and made of plastic materials.

Background

In modern heating, cooling and hot water supply systems, an automatic exhaust valve is a common auxiliary device mainly used for automatically exhausting air in the system to avoid adverse effects of air on the system, such as noise, heat exchange efficiency, etc. Most of the existing automatic exhaust valves are made of all-metal materials, and although the existing automatic exhaust valves have good corrosion resistance and stability, the cost of the existing automatic exhaust valves is relatively high, and the metal materials have good heat conduction performance, so that the temperature change of the valve body in the use process can be possibly caused, and the exhaust effect is affected.

In addition, some automatic vent valves have been attempted to be made of plastic materials to reduce cost and weight, but plastic vent valves are prone to sealing problems at the interface when connected to metal pipes, resulting in air or water leakage. Therefore, how to reduce the cost and weight of the automatic exhaust valve while ensuring the stability and sealing performance of the automatic exhaust valve is a problem to be solved in the industry.

Disclosure of utility model

In order to solve the problems, the utility model provides a plastic exhaust valve with an embedded metal interface.

In order to achieve the technical purpose and the technical effect, the utility model is realized by the following technical scheme:

The utility model provides an embedded metal interface's plastics material discharge valve, includes the casing, and the casing material is plastics, the embedded metal interface that sets up of casing lower extreme interface department, set up first sealing washer between the embedded metal interface outside and the casing lower extreme interface inboard.

Further, an inner cavity is arranged in the shell, and a pontoon capable of floating up and down is arranged in the cavity; the hook at the upper part of the pontoon is connected with the connecting rod. Through the position of the liquid in the pontoon, the pontoon is used for floating up and down by the change of buoyancy, so that the connecting rod is driven to be opened and closed. When the exhaust port is opened, the gas in the system is exhausted. When the gas in the system empties the mouth, the flotation pontoon drives the connecting rod to close the gas vent, closes the exhaust passage, prevents the liquid in the inner chamber from flowing out. In addition to automatically opening and closing, the exhaust port can also be manually closed by a screw cap.

The plastic shell body is internally embedded with a metal insert, so that the strength during use can be ensured. The weight and the requirements on insulation and heat insulation can be well considered.

Furthermore, the outer side of the lower end of the embedded metal interface is also provided with a second sealing ring, and the structural design is adopted to effectively reduce the working strength during installation and improve the sealing reliability. The embedded metal interface is provided with the hexagonal wrench, so that torque control requirements during assembly and convenience in tool installation are facilitated.

Furthermore, the first sealing ring arranged between the embedded metal interface and the shell body is convenient for the injection molding process and has good sealing effect.

Further, the inner cavity of the shell is provided with a pontoon with a groove, the upper end of the pontoon is assembled at 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.

Further, the upper end of the stainless steel connecting rod is provided with a round buckling hole which can be matched with a connecting column arranged at the lower end of the exhaust cover. The circular buckling hole arranged at the upper end of the stainless steel connecting rod rotates through the connecting column arranged at the lower end of the exhaust cover.

Further, the upper end of the pontoon is provided with a barb, and the barb arranged at the upper end of the pontoon is hooked at the lower end of the stainless steel connecting rod.

Furthermore, grooves formed in the surface of the pontoon are distributed in a plurality of rows in the horizontal-vertical direction, and the pontoon is in a hollow diversion design. The hollow diversion design is that the inner side of the pontoon is of a hollow structure, and diversion holes are formed in the left side and the right side of the top of the pontoon.

According to the novel automatic exhaust valve provided by the utility model, the installed interface is made of metal, the outer side of the installed interface is provided with the hexagonal wrench position, the buoyancy of the pontoon is reduced through the gas in the inner cavity, the connecting rod is driven to separate the silica gel gasket from the exhaust port, and the exhaust is automatically opened. After the gas is discharged, the buoyancy of the pontoon is increased to drive the connecting rod, so that the silica gel gasket is contacted with the gas outlet, and the gas outlet is automatically closed. The pontoon is of a hollow structure, materials are saved, the surface of the pontoon is provided with a groove which is not easy to be adsorbed on the inner surface of the shell, the middle of the pontoon adopts a hollow diversion design, so that gas flow is facilitated, and simultaneously, the gas entering instantly is buffered; the upper cover is assembled in a back-off mode, so that the part structure is simplified, and the cost is saved. The assembly during production is convenient, and the reliability of the assembly is also ensured structurally.

Drawings

FIG. 1 is an exploded view of one embodiment of the present utility model.

FIG. 2 is a schematic structural diagram of an embodiment of the present utility model.

FIG. 3 is a schematic diagram of an embodiment of the present utility model.

Detailed Description

The following detailed description of the embodiments of the utility model refers to the accompanying drawings.

An automatic exhaust valve comprises an automatic exhaust valve shell main body (2) and an embedded metal interface (4) which are processed by an injection molding process. A screw cap (11) is arranged on the exhaust nozzle of the upper cover (10) of the shell for blocking the exhaust nozzle. When the pressure in the system is smaller than the external air pressure, air is prevented from flowing backwards into the system, the screw cap (11) needs to be screwed tightly, and the exhaust valve is closed manually. When the liquid is injected into the system, the gas in the system needs to be emptied, and the exhaust valve needs to be opened manually, namely the screw cap (11) is unscrewed. The automatic exhaust valve will perform the automatic exhaust function. When a certain amount of gas is accumulated in the inner cavity of the automatic exhaust valve in the system, the weight of the pontoon (6) is larger than the buoyancy of the pontoon, and the pontoon (6) drives the connecting rod (7) to open the exhaust port in the exhaust cover (9) for automatic exhaust. After the gas in the system is exhausted, the weight of the pontoon (6) is smaller than the buoyancy, the pontoon (6) drives the connecting rod (7) to close the exhaust port in the exhaust cover (9), and the automatic exhaust is finished.

The embedded metal interface (4) is provided with a second sealing ring (5), and after the second sealing ring is installed, a good sealing effect is achieved through radial sealing of the sealing ring; the embedded metal interface (4) is provided with a hexagonal wrench position, so that the installation is convenient.

The embedded metal interface (4) and the shell body (2) are embedded in the shell by adopting an injection molding process, the first sealing ring (3) is added between the embedded metal interface and the shell, and when the temperature difference between the embedded metal interface and the shell body is large, the embedded metal interface and the shell body can be well sealed due to the fact that the shrinkage rate of the embedded metal interface and the shell body are different.

The connecting rod (7) and the exhaust cover (9) are sealed through the silica gel gasket (8), and the automatic closing after automatic exhaust is achieved through good sealing performance of the silica gel gasket.

The combination of the exhaust cover (9) and the shell body (2) is completed through the middle sealing ring (1) and the upper cover (10). The upper cover (10) is reversely buckled and pressed into the shell body (2) during assembly. The combination of the exhaust cover (9) and the shell body (2) is completed, and the middle sealing ring (1) is effectively sealed.

The end of the pontoon (6) is provided with a barb, and the barb arranged at the upper end of the pontoon (6) is hooked at the lower end of the stainless steel connecting rod (7).

Grooves formed in the surface of the pontoon (6) are distributed in a plurality of rows in the horizontal-vertical direction, and the pontoon is in a hollow diversion design. The hollow diversion design is that the inner side of the pontoon is of a hollow structure, and diversion holes are formed in the left side and the right side of the top of the pontoon.

In summary, the main body of the housing is made of plastic material and is embedded with a metal interface. The embedded metal interface is sealed with the middle of the plastic material of the main body by a sealing ring. The embedded metal interface is provided with an outer hexagonal wrench position. The upper cover and the shell adopt a structure of reversely buckling and pressing in the reversely buckling for assembly.

In a specific implementation process, the embedded interface is prefabricated: firstly, according to the required specification and size, the metal material is processed to prepare the embedded metal interface (4). Position location: in the plastic injection mould, a special position groove is designed for the embedded metal interface (4) to ensure the position fixing of the embedded metal interface in the injection process. Inlay embedded metal interface (4): the preformed embedded metal interface is placed into a specially positioned slot of the mold prior to beginning injection molding. Injection molding of plastic: after the built-in interface is placed, the injection molding process of the plastic begins. At this point, the molten plastic fills the cavity of the mold and tightly encapsulates the embedded interface, forming a secure connection. Cooling and solidifying: as the plastic cools and solidifies, the embedded metal interface forms an integral connection with the housing body. And (3) adding a sealing ring: in order to ensure good tightness, a sealing ring (3) can be additionally arranged at the joint of the metal embedded interface and the plastic shell body.

The foregoing description is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art should be able to apply equivalents and modifications according to the technical scheme and the modified concept of the present utility model within the scope of the present utility model.

Claims (7)

1. The utility model provides an embedded metal interface's plastics material discharge valve, includes the casing, and the casing material is plastics, the embedded metal interface that sets up of casing lower extreme interface department, set up first sealing washer between the embedded metal interface outside and the casing lower extreme interface inboard.

2. A plastic exhaust valve with a built-in metal interface as defined in claim 1, wherein: an inner cavity is arranged in the shell, and a pontoon capable of floating up and down is arranged in the cavity; the hook on the upper part of the pontoon is connected with the connecting rod, and the pontoon is used for floating up and down by the change of buoyancy according to the position of liquid in the pontoon, so that the connecting rod is driven to be opened and closed.

3. A plastic exhaust valve with a built-in metal interface as defined in claim 1, wherein: the outer side of the lower end of the embedded metal interface is also provided with a second sealing ring, and the embedded metal interface is provided with a hexagonal wrench position.

4. A plastic exhaust valve with a built-in metal interface as defined in claim 3, wherein: the inner cavity of the shell is provided with a pontoon with a groove, the upper end of the pontoon is assembled at the lower end of a stainless steel connecting rod, the upper end of the stainless steel connecting rod is assembled with an exhaust cover, the upper end of the stainless steel connecting rod is provided with a circular buckling hole which can be matched with a connecting column arranged at the lower end of the exhaust cover, and the circular buckling hole arranged at the upper end of the stainless steel connecting rod rotates through the connecting column arranged at the lower end of the exhaust cover.

5. A plastic exhaust valve with a built-in metal interface as defined in claim 3, wherein: the upper end of the pontoon is provided with a barb, and the barb arranged at the upper end of the pontoon is hooked at the lower end of the stainless steel connecting rod.

6. A plastic exhaust valve with a built-in metal interface as defined in claim 1, wherein: grooves formed in the surface of the pontoon are distributed in a plurality of rows in the horizontal and vertical directions, and the pontoon is in a hollow split-flow design.

7. A plastic exhaust valve with a built-in metal interface as defined in claim 1, wherein: the exhaust nozzle of the upper cover of the shell is provided with a rotary cap for sealing the exhaust nozzle.