Simple automatic exhaust valve

Abstract

A simple automatic exhaust valve adopts the fusion design of spring and float, which is composed of air port cover, sealing gasket, O-shaped sealing ring, spring seat, valve stem, connecting buckle, valve body, float, spring and valve body upper cover. Because the structure form of the spring applies pre-tightening force to the sealing gasket to block the air passage, the connection buckle between the valve stem and the float has no problem whether rigid or flexible material is used, all parts are distributed based on the circular centering nature, the manufacturing process is simple, the production cost is low, and the sealing gasket is in the closed state through the spring. When the upper cavity of the valve body accumulates air, the gas pressure presses the float to drop, drives the valve stem to open the air passage and exhaust through the exhaust port. After the gas is exhausted, the pressure in the valve body decreases, the water flow enters the valve body, the float rises due to the buoyancy and resets, and the sealing gasket realizes automatic closing. If negative pressure is formed in the pipeline, external air will push open the sealing gasket to enter to prevent the pipeline from collapsing.

Description

Technical Field

[0001] This utility model relates to the technology of exhaust valves in the field of valve technology. Background Technology

[0002] An air release valve is a valve used to remove gas from pipelines or systems. It comes in various structural forms, including float-type and spring-loaded air release valves, and has a wide range of applications, including HVAC, fire protection, petrochemicals, construction, and automotive. Typically installed at the highest point of the pipeline or a locally elevated point, it effectively removes air from the system, preventing uneven heat dissipation, pipeline noise, or abnormal equipment operation caused by gas accumulation. It also avoids air resistance, ensuring efficient, safe, and stable system operation. Currently, there are many types of air release valves with diverse structures, each with its own advantages and disadvantages. Due to intense market competition, industry professionals intend to focus on optimizing design, improving processes, and reducing costs to develop more competitive, cost-effective products. Summary of the Invention

[0003] This utility model provides a simple automatic exhaust valve, which adopts a combined design of spring and float to simplify the structure and reduce manufacturing costs. It consists of an air mask, sealing gasket, O-ring, spring seat, valve stem, connecting buckle, valve body, float, spring, and valve body cover. The air mask is cylindrical, made of metal or plastic, with a countersunk hole in the center. The open end has an internal thread that connects to the valve body cover, and the other end is a sealed bottom. Several exhaust ports are located near the bottom of the countersunk hole. Knurling can be applied to the outer circumference of the air mask to increase friction during screwing. The depth of the countersunk hole is related to the corresponding external thread of the valve body cover; that is, when the internal thread of the countersunk hole is screwed into the end of the external thread of the valve body cover, the exhaust ports are sealed. The valve body cover is made of metal or plastic, and is a circular cover with a handle in the middle. The larger end is hollow and has an internal thread for connection to the valve body. The handle is a boss with a central vent and exhaust port, located on the same center line as the valve body cover, perpendicular to the cover. The end of the handle has an external thread for connection to the gas mask. The outer circumferential surface of the valve body cover can be knurled to increase friction during turning. The valve body is made of metal or plastic and is cylindrical. The cylinder houses a spring seat, spring, sealing gasket, valve stem, connecting buckle, float, and other parts. The end face of the cylinder opening has a groove for installing an O-ring seal, and the inside of the cylinder opening has a step for installing the spring seat. The bottom of the cylinder has a small outward-facing boss with an external thread for connection to the system piping. A central through hole connects to the inner cavity of the cylinder. The spring seat is made of metal or plastic, resembling a round, cap-shaped part with a large flange. The inner cavity of the central cylinder is the area for installing the spring, valve stem, and sealing gasket. A through-hole allows the valve stem to move freely up and down. Several vent holes are provided on the cylinder wall. The cap portion is a flat circular ring with a diameter matching the installation dimensions of the valve body's stepped opening. The valve stem is made of metal or plastic, resembling an engine's valve stem pushrod. The larger end of the valve stem is round, with a countersunk hole for installing the sealing gasket on its end face. A spring limiting groove is located on the back of the larger end, and a small hole for installing a connecting buckle is located at the smaller end. The float is cylindrical, made of a non-metallic material with a specific gravity less than 1. A lifting ring for installing a connecting buckle is located at the center of one end of the cylinder. The end face of the cylinder is rounded, and the circumference is smooth, allowing for a large clearance fit with the inner diameter of the valve body. The float can be made solid or hollow; in short, it should ensure that the float can float above the liquid and move freely up and down when subjected to changes in air pressure. The connecting buckle can be made of a metal wire with sufficient strength and a certain degree of elasticity, bent into an S-shape, double ring, or other shapes that provide reliable connection and are easy to assemble and disassemble. Because this invention uses a spring to apply pre-tightening force to the sealing gasket to block the vent, the connection between the valve stem and the float can be made of either rigid or flexible materials without issue. The spring keeps the sealing gasket in an automatic sealing state. When air accumulates to a certain level in the upper cavity of the valve body, the float only needs to sink under air pressure to drive the valve stem and sealing gasket to open the vent and release air. Attached Figure Description

[0004] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0005] Figure 2 This is a sectional view of the valve body cover.

[0006] Figure 3 This is a schematic diagram of the structure of an air-conditioning mask.

[0007] Figure 4 This is a schematic diagram of the spring seat structure.

[0008] Figure 5 This is a three-dimensional view of the spring seat.

[0009] Figure 6 This is a schematic diagram of the valve stem structure.

[0010] Figure 7 This is a schematic diagram of the valve body structure.

[0011] Figure 8 This is a schematic diagram of a pontoon.

[0012] In the diagram: 1. Air mask; 2. Sealing gasket; 3. O-ring; 4. Spring seat; 5. Valve stem; 5.1. Spring limiting groove; 6. Valve body; 6.1. Groove; 7. Float; 7.1. Lifting ring; 8. Connecting buckle; 9. Spring; 10. Valve body cover. 01. Exhaust port; 02. Vent passage; 03. Vent hole. Detailed Implementation

[0013] A simple automatic exhaust valve consists of an air mask 1, a sealing gasket 2, an O-ring 3, a spring seat 4, a valve stem 5, a valve body 6, a float 7, a connecting buckle 8, a spring 9, and a valve body cover 10. The air mask 1 is cylindrical, made of metal or plastic, with a countersunk hole in the center. The open end has an internal thread that connects to the valve body cover 10, and the other end is a sealed bottom. Several exhaust ports 01 are located near the bottom of the countersunk hole. The outer circumference of the air mask 1 can be knurled to increase friction during screwing. The depth of the countersunk hole is related to the corresponding external thread of the valve body cover 10; that is, when the internal thread of the countersunk hole is screwed into the end of the external thread of the valve body cover 10, the exhaust ports 01 are sealed. The valve body cover 10 is made of metal or plastic and is a circular cover with a handle in the middle. The larger end is hollow and has an internal thread for connecting to the valve body 6. The handle is a boss with a centrally located air passage 02 and exhaust port 01, located on the same center line as the valve body cover 10. The handle is perpendicular to the cover and has an external thread at the end for connecting to the air cover 1. The outer circumferential surface of the valve body cover 10 can be knurled to increase friction when screwed. The valve body 6 is made of metal or plastic and is cylindrical. The cylinder houses a spring seat 4, spring 9, sealing gasket 2, valve stem 5, connecting buckle 8, float 7, and other parts. The cylinder opening has a groove 6.1 for installing an O-ring seal 3. The cylinder opening has a step for installing the spring seat 4. The bottom of the cylinder has an outwardly turned small boss with an external thread for connecting to the system pipeline. The central through hole connects to the inner cavity of the cylinder. The spring seat 4 is made of metal or plastic and resembles a round cap-shaped part with a large flange. The inner cavity of the central cylinder is the area for installing the spring 9, valve stem 5, and sealing gasket 2. The bottom of the cylinder has a through hole through which the valve stem 5 can move freely up and down. The cylinder wall has several vent holes 03. The cap part is a flat ring with a diameter that matches the installation dimensions of the valve body 6 cylinder opening step. The valve stem 5 is made of metal or plastic and resembles the valve pushrod of an engine. The large end of the valve stem 5 is round, with a countersunk hole for installing the sealing gasket 2 on the end face. The back of the large end has a spring limiting groove 5.1, and the small end has a small hole for installing the connecting buckle 8. The float 7 is cylindrical and made of a non-metallic material with a specific gravity of less than 1. A lifting ring 7.1 for mounting a connecting buckle 8 is located at the center of one end of the cylinder. The end face of the cylinder has rounded corners, and the circumference of the cylinder is smooth, allowing for a large clearance fit with the inner diameter of the valve body 6. The float 7 can be made solid or hollow; in short, it should ensure that the float 7 can float above the liquid and move freely up and down when subjected to changes in air pressure. The connecting buckle 8 can be made of a metal wire with sufficient strength and a certain degree of elasticity, bent into an S-shape, double ring, or other shapes that provide reliable connection and are easy to assemble and disassemble.Since this utility model adopts a structure in which the spring 9 applies a pre-tightening force to the sealing gasket 2 to seal the vent 02, it is not a problem whether the connecting buckle 8 between the valve stem 5 and the float 7 is made of rigid or flexible material. This is because the spring 9 keeps the sealing gasket 2 in an automatic sealing state. When the air in the upper cavity of the valve body 6 accumulates to a certain extent, the float 7 only needs to sink under the pressure of the air to drive the valve stem 5 and the sealing gasket 2 to open the vent 02 to release the air.

[0014] Assembly: After fitting the valve stem 5 onto the spring 9, install it into the spring seat 4. Connect the valve stem 5 to the float 7 using the connecting buckle 8 through the small hole at the bottom end of the spring seat 4. Place the above-mentioned assembly into the valve body 6, further install the O-ring 3 into the groove at the port of the valve body 6, and install the sealing gasket 2 at the end of the valve stem 5. Further secure the valve body cover 10 to the large end of the valve body 6 with threads. Then screw the air mask 1 into the threaded end of the vent 02 of the valve body cover 10.

[0015] Summary: All parts of this utility model are designed based on a circular, centrally aligned distribution, resulting in a simple manufacturing process and low production cost. The spring 9 keeps the sealing gasket 2 in a normally closed state. When air accumulates in the upper cavity of the valve body 6, the gas pressure forces the float 7 to descend, causing the valve stem 5 to open the vent 02 and release air through the exhaust port 01. After the gas is exhausted, the pressure inside the valve body 6 decreases, allowing water to flow into the valve body 6. The float 7 rises and resets due to buoyancy, and the sealing gasket 2 automatically closes. If a negative pressure forms inside the pipeline, external air will push open the sealing gasket 2 to enter, preventing the pipeline from collapsing.

Claims

1. A simple automatic air vent valve, characterized in that: The design incorporates a combination of springs and pontoons. The device consists of an air mask, a sealing gasket, an O-ring, a spring seat, a valve stem, a connecting buckle, a valve body, a float, a spring, and a valve body cover. The air mask is cylindrical with a countersunk hole in the center. The open end has an internal thread that connects to the valve body cover, and the other end is a sealed bottom. Several exhaust ports are located near the bottom of the countersunk hole. The valve body cover is a circular cover with a handle in the center. The larger end is hollow and has an internal thread that connects to the valve body. The handle is a boss with a central air passage that connects to the exhaust ports. It is located on the same center line as the valve body cover and is perpendicular to the cover. The end of the handle has an external thread that connects to the air mask.

2. A simple automatic air vent valve according to claim 1, characterized in that: The The valve body is cylindrical in shape, housing the spring seat, spring, sealing gasket, valve stem, connecting buckle, float and other parts. The end face of the cylinder opening is provided with a groove for installing the O-ring seal, and the inside of the cylinder opening is provided with a step for installing the spring seat. The bottom of the cylinder is provided with an outward-facing small boss, which is provided with an external thread for connecting to the system pipeline. The middle through hole is connected to the inner cavity of the cylinder.

3. A simple automatic air vent valve according to claim 1, characterized in that: The The spring seat is a round, cap-shaped part with a large flange. The inner cavity is the area for installing the spring, valve stem, and sealing gasket. The bottom has a through hole for the valve stem to move freely up and down. The spring seat cylinder wall has several vent holes. The cap part is a flat ring with a diameter that matches the installation dimensions of the valve body cylinder step.

4. A simple automatic air vent valve according to claim 1, characterized in that: The The valve stem is shaped like an engine valve pushrod. The large end of the valve stem is round, with a countersunk hole for installing a sealing gasket on the end face. A spring limiting groove is provided on the back of the large end, and a small hole for installing a connecting buckle is provided at the small end.

5. A simple automatic air vent valve according to claim 1, characterized in that: The aforementioned The float is cylindrical and made of non-metallic material with a specific gravity of less than 1. A lifting ring with a connecting buckle is set at the center of one end of the float cylinder. The end face of the float cylinder is rounded and the circumference of the float cylinder is smooth, which fits with the large clearance of the valve body. The float can be made into a solid or hollow structure, and can move up and down freely when subjected to air pressure changes.

6. A simple automatic air vent valve according to claim 1, characterized in that: air masks The outer circumference and the outer circumference of the valve body cover are knurled to increase friction when twisting.

7. A simple automatic air vent valve according to claim 1, characterized in that: The air mask, spring seat, valve stem, valve body, and valve body cover are made of metal or plastic.

Images