Integrated convenient adjustable pressure relief gas-liquid automatic discharge valve

Abstract

The utility model discloses a kind of integrated gas-liquid automatic discharge valve of convenient adjustable discharge pressure, it is integrated with automatic exhaust, automatic pressure relief, automatic air supply, and discharge pressure can be manually conveniently adjusted. It is composed of sealing gasket, pressure regulating bolt, lock nut, sealing ring, big spring, small spring, valve core, valve body, small valve core, support plate, valve cap, presser plate. Small spring is sleeved into small valve core and is loaded into valve body, then support plate, big spring, presser plate are loaded in sequence, sealing ring is loaded in the groove in the end of valve body, then valve cap is screwed on valve body, lock nut is screwed into the threaded hole in the center of valve cap after pressure regulating bolt, sealing filler is embedded in the sealing gasket sink hole of valve cap, after being appropriately pre-tightened, it is sent to test bench to carry out working condition scene test, lock nut is firmly locked after test is completed. The utility model is integrated with double valve cores in valve, longitudinal and horizontal multiple flow channels are fused, avoid the block of gas path due to valve core displacement, so as to realize the balanced distribution of air flow, ensure stable and reliable performance.

Description

Technical Field

[0001] This utility model belongs to the field of valves, specifically relating to an integrated, convenient, and adjustable automatic gas-liquid discharge valve. Background Technology

[0002] There are many types of exhaust valves available, each with its own structural design and wide range of applications. However, they all share the same basic function: to release gas accumulated in the system when it affects the normal operation of the liquid system, to relieve pressure when the liquid or gas system is overloaded, and to replenish gas to prevent the collapse of containers and pipelines in the system when the system loses pressure. However, exhaust valves that have all of the above functions are very rare, and their structures are relatively complex and their manufacturing costs are high. Summary of the Invention

[0003] This utility model is an integrated, convenient, and adjustable automatic gas-liquid discharge valve with a compact structure. It comprehensively considers the aforementioned factors, integrating automatic venting, automatic pressure relief, and automatic gas replenishment, while allowing for convenient manual adjustment of the discharge pressure. Its performance is stable and reliable. This utility model is achieved by comprising a sealing gasket, pressure adjusting bolt, lock nut, sealing ring, large spring, small spring, valve core, valve body, small valve core, support plate, valve cap, and pressure plate. It adopts a valve-within-a-valve dual-valve core integrated design, seamlessly connecting the gas replenishment horizontal channel, gas replenishment straight channel, airflow channel, annular air channel, air storage chamber, and vent, preventing airflow obstruction due to valve core displacement and achieving balanced airflow distribution. The valve body is cylindrical in shape, made of plastic or metal, with external threads at both ends. One end is threaded to the valve cap, and the other end is connected to the system piping or storage tank. The valve body has a through-hole at both ends. The pipe connection end has an air storage chamber, while the valve cap connection end has a valve core, a small valve core, a small spring, a support plate, and a large spring. A constriction section is located between the two ends, with a conical bottom that matches the valve core's cone head. The diameter of the central hole in the constriction section should ideally be larger than the diameter of the small end of the small valve core. This allows the central hole of the constriction section to become the space for the small valve core to sink when the system generates negative pressure, resulting in a more compact exhaust valve structure. An annular air passage is located in the valve body at the corresponding installation position of the valve core. Several vents are located within the annular air passage. The annular air passage serves to guide several airflow channels axially distributed around the valve core. This combination of longitudinal and transverse air passages ensures uniform and smooth airflow distribution, reducing noise generation. The vents function as both pressure relief exhaust and negative pressure intake. The valve core is cylindrical in shape and made of plastic or metal. One end has a conical head that matches the taper of the conical bottom of the constricted section inside the valve body. The outer circumference is clearance-fitted with the valve body. Several airflow channels are axially arranged on the circumferential surface, and a stepped hole for installing a small valve core and a small spring is located in the center. Several air supply channels are arranged on the end face of the other end of the valve core. The small valve core is a stepped cylindrical rod made of plastic or metal. It has a straight air supply channel in the center. The small outer diameter end is dynamically fitted with the small diameter section of the valve core's central hole, and the large outer diameter end is dynamically fitted with the large diameter section of the valve core's central hole. The large end face of the small valve core has a large chamfer. The chamfer improves the stress state of the small valve core under the action of the internal and external pressure difference, making the air supply process smoother. The valve cap is made of plastic or metal and resembles the lid of a screw-top cup. The internal thread of the screw-top matches the external thread on the valve core end of the valve body. A raised boss is located at the center of the valve cap, with a threaded hole at its center. A stepped hole for filling with a sealing gasket is located at the end of the boss, and the central threaded hole matches the pressure adjusting bolt. The lock nut is a stepped nut, with the minor diameter of the step matching the diameter of the stepped hole for filling with the sealing gasket on the valve cap boss. The lock nut compresses the sealing gasket, creating a reliable seal between the pressure adjusting bolt and the valve cap, thus locking them in place. Attached Figure Description

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

[0005] Figure 2 for Figure 1 A sectional view of the valve body.

[0006] Figure 3 This is a schematic diagram of the valve core structure.

[0007] Figure 4 This is a schematic diagram of the small valve core structure.

[0008] In the diagram: 1. Sealing gasket; 2. Pressure adjusting bolt; 3. Lock nut; 4. Sealing ring; 5. Large spring; 6. Small spring; 7. Valve core; 8. Valve body; 9. Small valve core; 10. Support plate; 11. Valve cap; 12. Pressure plate; 01. Air supply horizontal channel; 02. Airflow channel; 03. Air supply straight channel; 04. Air storage chamber; 05. Annular air channel; 06. Vent. Detailed Implementation

[0009] This utility model comprises a sealing gasket 1, a pressure adjusting bolt 2, a lock nut 3, a sealing ring 4, a large spring 5, a small spring 6, a valve core 7, a valve body 8, a small valve core 9, a support plate 10, a valve cap 11, and a pressure plate 12. A horizontal air supply channel 01 is provided at the end face of the valve core 7, an airflow channel 02 is provided around its circumference, and a straight air supply channel 03 is provided at its center. An air storage chamber 04 is provided at the connection end of the valve body 8 with the system pipeline, and an annular air passage 05 is provided in the middle of the inner cavity of the valve body 8, with several air vents 06 in the annular air passage 05. The valve body 8 is cylindrical in shape, made of plastic or metal, and has external threads at both ends. One end is threaded to the valve cap 11, and the other end is connected to the system pipeline or storage tank. The inner cavity of the valve body 8 is open at both ends; the pipeline connection end has an air storage chamber 04, and the valve cap 11 connection end has a valve core 7, a small valve core 9, a small spring 6, a support plate 10, and a large spring 5. A constriction section is provided between the two ends. The bottom of the constriction section has a conical bottom that matches the cone head of the valve core 7. The diameter of the central hole of the constriction section should be larger than the diameter of the small end of the small valve core 9. This way, when the system generates negative pressure, the central hole of the constriction section becomes the space for the small valve core 9 to sink, making the structure of the exhaust valve more compact. The inner cavity of the valve body 8 has an annular air passage 05 at the corresponding installation position of the valve core 7. Several vents 06 are provided in the annular air passage 05. The function of the annular air passage 05 is to guide the several airflow channels 02 distributed axially around the valve core 7. This combination of longitudinal and transverse air passages can ensure uniform and smooth airflow distribution and reduce noise generation. The vents 06 are responsible for the functions of pressure relief and exhaust, as well as negative pressure intake. The vents 06 can be set as threaded interfaces for connection to external pipelines. The valve core 7 is cylindrical in shape and made of plastic or metal. One end has a conical head that matches the taper of the conical bottom of the constricted section inside the valve body 8. The outer circumference is clearance-fitted with the valve body 8. Several airflow channels 02 are axially arranged on the circumferential surface. A stepped hole is provided in the center for installing the small valve core 9 and the small spring 6. Several air replenishment channels 01 are provided on the end face of the other end of the valve core 7. The small valve core 9 is a stepped cylindrical rod made of plastic or metal. A straight air replenishment channel 03 is provided in the center. The small outer diameter end is dynamically fitted with the small diameter section of the center hole of the valve core 7, and the large outer diameter end is dynamically fitted with the large diameter section of the center hole of the valve core 7. The large end face of the small valve core 9 has a large chamfer. The chamfered surface can improve the stress state of the small valve core 9 under the action of the internal and external pressure difference, making the air replenishment process smoother. The valve cap 11 is made of plastic or metal and resembles the lid of a screw-top cup. The internal thread of the screw cap matches the external thread on the valve body 8 and valve core 7. A raised platform is located at the center of the valve cap 11, with a threaded hole at its center. A stepped hole for filling the sealing gasket 1 is located at the end of the platform, and the central threaded hole matches the pressure adjusting bolt 2. The lock nut 3 is a stepped nut. The minor diameter of the step matches the stepped hole diameter of the sealing gasket 1 on the platform of the valve cap 11. The lock nut 3 compresses the sealing gasket 1, creating a reliable seal between the pressure adjusting bolt 2 and the valve cap 11, thus locking the valve cap 11 in place.

[0010] Assembly: Insert the small spring 6 into the small valve core 9 and then into the valve body 8. Then, install the support plate 10, the large spring 5, and the pressure plate 12 in sequence. Install the sealing ring 4 in the groove at the end of the valve body 8. Then, screw the valve cap 11 onto the valve body 8. Then, screw the lock nut 3 into the pressure adjusting bolt 2 and then into the threaded hole in the center of the valve cap 11. Embed the sealing filler in the countersunk hole of the sealing gasket 1 of the valve cap 11. After appropriate pre-tightening, send it to the test bench for working condition scenario testing. After the test is completed, lock the lock nut 3 securely.

[0011] Summary: When the exhaust valve of this utility model encounters a situation where system gas accumulates in the gas storage chamber to the set discharge pressure parameter, the gas or gas-liquid mixture will overcome the pressure of the large spring 5. Regardless of whether this force is applied to the small valve core 9 or the valve core 7, its force will slowly push up the valve core 7, and the overloaded gas and liquid will be discharged along the conical surface through the airflow channel 02 and the vent 06. When the system operates under negative pressure, because the external pressure is higher than the internal pressure of the system, the small valve core 9 gradually sinks under the action of negative pressure, overcoming the force of the small spring 6. The external airflow enters the small valve core 9 from the vent 06 through the airflow channel 02. The component of the external airflow acting on the chamfered surface of the small valve core 9 will help the small valve core 9 sink. The external airflow flows through the vent 06, the airflow channel 02, and the replenishment straight channel 03 into the system pipeline, ensuring that the system pipeline does not collapse under negative pressure.

Claims

1. An integrated, convenient, and adjustable automatic gas-liquid discharge valve, characterized in that: It consists of a sealing gasket, pressure adjusting bolt, lock nut, sealing ring, large spring, small spring, valve core, valve body, small valve core, support plate, valve cap, and pressure plate. It adopts a valve-within-a-valve dual-valve core integrated design. There is a horizontal air supply channel at the end face of the valve core, an airflow channel around the circumference of the valve core, and a straight air supply channel at the center of the valve core. There is an air storage chamber at the connection end between the valve body and the system pipeline. There is an annular air passage in the middle of the valve body cavity, and there are several air vents in the annular air passage. The horizontal air supply channel, the straight air supply channel, the airflow channel, the annular air passage, the air storage chamber, and the air vents are integrated and connected to ensure a balanced airflow distribution. This avoids airflow obstruction caused by valve core displacement. It has automatic exhaust, automatic pressure relief, and automatic air supply functions, and the discharge pressure can be manually and conveniently adjusted.

2. The gas-liquid automatic discharge valve with integrated, convenient, and adjustable discharge pressure according to claim 1, characterized in that: The valve body is cylindrical in shape and made of plastic or metal. It has external threads at both ends. One end is threaded to the valve cap, and the other end is connected to the system pipeline or storage tank. The valve body cavity is open at both ends. The pipeline connection end has an air storage chamber. The valve cap connection end has a valve core, a small valve core, a small spring, a support plate, and a large spring. There is a constriction section between the two ends. The bottom of the constriction section has a conical bottom that matches the conical head of the valve core. The valve body cavity has an annular air passage at the corresponding installation position of the valve core. Several air vents are provided in the annular air passage.

3. The gas-liquid automatic discharge valve with integrated, convenient, and adjustable discharge pressure according to claim 1, characterized in that: The valve core is cylindrical in shape and made of plastic or metal. One end is provided with a cone head that matches the taper of the conical bottom of the concave section of the valve body. The outer circumference is clearance-fitted with the valve body. Several airflow channels are axially arranged on the circumferential surface. A stepped hole is provided in the center for installing a small valve core and a small spring. Several air supply channels are provided on the end plane of the other end of the valve core.

4. The gas-liquid automatic discharge valve with integrated, convenient, and adjustable discharge pressure according to claim 1, characterized in that: The small valve core is a stepped cylindrical rod made of plastic or metal. It has a central air supply channel, a small outer diameter end that is dynamically fitted with the small diameter section of the valve core's central hole, and a large outer diameter end that is dynamically fitted with the large diameter section of the valve core's central hole. The large end face of the small valve core has a large chamfer that can improve the stress state of the small valve core caused by the internal and external pressure difference.

5. The gas-liquid automatic discharge valve with integrated, convenient, and adjustable discharge pressure according to claim 1, characterized in that: The valve cap is made of plastic or metal and is shaped like a cup lid with a screw-in spout. The internal thread of the screw-in spout matches the external thread on the valve core end of the valve body. A boss is raised in the center of the valve cap, and a threaded hole is provided in the center of the boss. A stepped hole for filling with sealing gasket is provided at the end of the boss. The central threaded hole matches the pressure adjusting bolt.

6. The gas-liquid automatic discharge valve with integrated, convenient, and adjustable discharge pressure according to claim 1, characterized in that: The lock nut is a stepped nut, the minor diameter of which matches the diameter of the stepped hole for filling the sealing packing on the valve cap boss, and is made of plastic or metal.

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