Multifunctional valve for liquid pressure vessel

Abstract

The utility model discloses a kind of multifunctional valve for liquid pressure vessel, including valve body, upper valve core, lower valve core;After gas from inlet enters central passage from pressure vessel, upper valve core is lifted upwards, make upper valve core move upwards, make gas discharge from gas gap, complete the process of gas discharge;When liquid into valve body reaches preset pressure or speed, will make upper valve core move to the highest position of upper valve cavity, the top of upper valve core will close outlet, realize the sealing of container;When the pressure inside container is too high, liquid continuously enters valve body, liquid starts to push lower valve core downwards, so that liquid enters lower valve cavity from exhaust gap and is discharged from pressure release port, to achieve the purpose of pressure relief, through the multifunctional valve simultaneously realizes exhaust, pressure maintaining, pressure relief effect, reduces the use number of control valve, reduces production cost, reduces production process.

Description

Technical Field

[0001] This utility model relates to the field of control valve technology, and in particular to a multifunctional valve for liquid pressure vessels. Background Technology

[0002] In order to ensure safety and functionality, existing liquid pressure vessels are designed and manufactured with at least two independent control valves: a pressure relief valve and an air release valve. When liquid begins to enter the liquid pressure vessel, the pressure relief valve closes, and the air release valve must be opened to release the gas inside the vessel. This step is crucial because if the internal gas is not released in time, the compressed gas inside the vessel will reduce the amount of liquid entering, thus affecting the normal use of the vessel and the storage effect of the liquid. At the same time, during the process of liquid entering the vessel, the gas inside the pressure vessel is pushed out of the vessel by the liquid and completely discharged through the air release valve. At this time, the air release valve needs to be closed to prevent the liquid inside the vessel from being discharged through the air release valve. After the air release valve is closed, the vessel enters a pressure holding state. As liquid continues to enter the vessel, pressure is generated inside the vessel. When this pressure is about to exceed the design pressure bearing value of the vessel, the pressure relief valve opens. The pressure relief valve can effectively release pressure and protect the vessel from potential safety hazards.

[0003] To achieve the functions of these two control valves, the liquid pressure vessel requires two separate pipelines for the pressure relief valve and the exhaust valve, which inevitably increases production costs and production steps, making the entire manufacturing process more complex and time-consuming. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a multi-functional valve suitable for liquid pressure vessels, the structure of which includes a main valve body, an upper valve core, and a lower valve core. Specifically, the valve body has an upper valve chamber, a central channel, and a lower valve chamber arranged sequentially from top to bottom. The upper and lower valve chambers are interconnected through the central channel. An outlet is provided at the top of the upper valve chamber, and a pressure relief port is provided at the bottom of the lower valve chamber. In addition, an inlet is provided on the central channel. The upper valve core is installed in the upper valve chamber, and a certain venting gap is formed between its outer wall and the inner wall of the upper valve chamber. When the upper valve core moves upward to the highest position of the upper valve chamber, the top of the upper valve core completely closes the venting port. Similarly, the lower valve core is installed in the lower valve chamber, and an exhaust gap is formed between its outer wall and the inner wall of the lower valve chamber. A spring is installed at the bottom of the lower valve core; when the lower valve core is at the highest position of the lower valve chamber, the connection between the lower valve chamber and the central channel is disconnected.

[0005] According to some specific embodiments of this utility model, a sealing ring is fitted around the outside of the upper valve core, while a sealing sleeve is installed inside the upper valve cavity. The sealing sleeve is positioned inside the air outlet and cooperates with the sealing ring to achieve a sealing effect. When the upper valve core is pushed to the highest position of the upper valve cavity, the sealing ring and the sealing sleeve will come into tight contact, thereby ensuring that the air outlet is completely sealed and maintaining good sealing performance, effectively preventing gas leakage.

[0006] According to some specific embodiments of this utility model, the upper valve core further includes a core block and a valve stem. The valve stem is disposed on the top of the core block and passes upward through the through hole of the sealing sleeve. The sealing ring is fitted onto the valve stem, with its lower end face tightly fitted against the top surface of the core block. To prevent the sealing ring from shifting on the valve stem, a raised ring is also provided on the outer wall of the valve stem, which tightly fits against the upper end face of the sealing ring.

[0007] According to some specific embodiments of this utility model, a groove is provided on the lower valve core, and a sealing block is installed in the groove. When the lower valve core is at the highest position of the lower valve cavity, the sealing block will fit tightly with the lower port of the central channel, thereby interrupting the communication between the lower valve cavity and the central channel.

[0008] According to some specific embodiments of this utility model, the multifunctional valve further includes a pressure relief nozzle. The pressure relief nozzle consists of an insert portion and a nozzle portion. The insert portion is inserted into the pressure relief port, and a spring is installed in its inner cavity. The upper end of the spring contacts the bottom surface of the lower valve core. The nozzle portion is located below the insert portion, and its inner cavity communicates with the inner cavity of the insert portion.

[0009] According to some specific embodiments of this utility model, in order to better control the inlet and outlet of gas, this utility model also provides an outlet nozzle and an inlet nozzle. The outlet nozzle is installed on the valve body and covers the outlet. The outlet nozzle includes a cap and a nozzle tube, with the nozzle tube disposed on the top of the cap. The cap is fitted onto the valve body, so that the nozzle tube is located above the outlet and communicates with the upper valve chamber. The inlet nozzle is inserted into the inlet to allow for smooth gas entry.

[0010] This utility model has at least the following beneficial effects:

[0011] 1. This multi-functional valve adopts a vertical assembly method. Under the action of gravity, the valve body is naturally located at the lowest point of the lower valve chamber; while the lower valve core is lifted by a spring, placing it at the highest position in the lower valve chamber, thus ensuring that the connection between the lower valve chamber and the central channel is disconnected. When the liquid in the pressure vessel enters the central channel through the inlet, the gas in the pressure vessel will push the upper valve core upward, causing it to move upward, thereby allowing the gas to be discharged from the outlet gap, completing the gas discharge action and realizing the exhaust function. When the liquid entering the valve body reaches the preset pressure or speed, the liquid will push the upper valve core to the highest position of the upper valve chamber. At this time, the top of the upper valve core will close the outlet and, under the action of liquid pressure, maintain the connection between the outlet and the valve core. The closed state of the vent achieves the sealing and pressure-holding functions of the container. When the liquid pressure inside the container is too high, or when liquid continues to enter the valve body, the upper valve core is pushed to the highest position of the upper valve chamber by the liquid. The liquid then begins to push the lower valve core downward, causing it to move downward. This allows the liquid to enter the lower valve chamber through the vent gap and exit through the pressure relief port, thus achieving the pressure relief function. When the liquid pressure inside the container decreases, the lower valve core is lifted by the spring, reconnecting the lower valve chamber to the central channel. This multi-functional valve design enables simultaneous venting, pressure holding, and pressure relief functions, thereby reducing the number of control valves used, lowering production costs, and simplifying the production process.

[0012] 2. The main components of the upper valve core include the core block and the valve stem. The valve stem is carefully positioned at the top of the core block and extends upward from the top of the core block, passing through the through hole reserved in the sealing sleeve. To ensure the sealing effect, the sealing ring is fitted on the outside of the valve stem, and its lower end face is tightly fitted with the top surface of the core block to form a tight sealing interface. When the upper valve core is pushed to the highest position of the upper valve cavity during operation, the core block will apply a certain pressure to further press the sealing ring onto the sealing sleeve, thereby ensuring the sealing performance of the upper valve cavity.

[0013] 3. The lower valve core includes a groove into which a special sealing block is installed. When the lower valve core is raised to the highest position of the lower valve chamber, the sealing block will come into close contact with and adhere tightly to the lower port of the central channel. In this way, the connection between the lower valve chamber and the central channel will be effectively disconnected to prevent leakage.

[0014] 4. To prevent unnecessary displacement of the sealing ring on the valve stem, which could affect the sealing effect, a raised ring structure is specially designed on the outer wall of the valve stem. This raised ring fits tightly against the upper end face of the sealing ring, forming a stable fixing effect and ensuring that the sealing ring remains in a fixed position on the valve stem.

[0015] 5. In addition, the system is equipped with auxiliary components such as pressure relief nozzles, exhaust nozzles, and intake nozzles. The pressure relief nozzle, connected to a pressure relief pipe, is used to release pressure within the system when necessary; the exhaust nozzle, connected to an exhaust pipe, is responsible for venting gas from the system; and the intake nozzle, connected to the pressure vessel via an intake pipe, ensures the normal supply and flow of gas within the system. The installation of these nozzles further enhances the system's safety and operational flexibility.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is an overall exploded view of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the exhaust state according to an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the pressure holding state in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the pressure relief state in an embodiment of the present invention. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, "more than" means two or more, and "greater than," "less than," "exceeding," etc., are understood to exclude the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0024] Reference Figures 1 to 4A multi-functional valve designed specifically for liquid pressure vessels includes a valve body 100, an upper valve core 200, and a lower valve core 300. Specifically, the valve body 100 has an upper valve chamber 110, a central channel 120, and a lower valve chamber 130 arranged sequentially from top to bottom. The upper valve chamber 110 and the lower valve chamber 130 are interconnected through the central channel 120. An air outlet 111 is provided at the top of the upper valve chamber 110, and a pressure relief port 131 is provided at the bottom of the lower valve chamber 130. In addition, the central channel 120 is also provided with an inlet 121, which is connected to the pressure vessel through an external pipeline. The upper valve core 200 is installed inside the upper valve chamber 110, and an air outlet gap 201 is formed between its outer wall and the inner wall of the upper valve chamber 110. When the upper valve core 200 moves upward to the highest position of the upper valve chamber 110, its top will completely close the air outlet 111.

[0025] Similarly, the lower valve core 300 is installed inside the lower valve chamber 130, and an exhaust gap 301 is formed between its outer wall and the inner wall of the lower valve chamber 130. A spring 400 is installed at the bottom of the lower valve core 300. When the lower valve core 300 is at the highest position of the lower valve chamber 130, the connection between the lower valve chamber 130 and the central channel 120 is disconnected.

[0026] This multi-functional valve is assembled vertically. Under the action of gravity, the valve body 100 is naturally located at the lowest point of the lower valve chamber 130; while the lower valve core 300 is lifted by the spring 400, placing it at the highest position of the lower valve chamber 130, thereby ensuring that the connection between the lower valve chamber 130 and the central channel 120 is disconnected. When the liquid in the pressure vessel enters the central channel 120 through the inlet 121, the gas in the pressure vessel will push the upper valve core 200 upward, causing it to move upward, thereby allowing the gas to be discharged from the outlet gap 201, completing the gas discharge action and realizing the exhaust function.

[0027] When the liquid entering the valve body 100 reaches the preset pressure or speed, the liquid will push the upper valve core 200 to the highest position of the upper valve chamber 110. At this time, the top of the upper valve core 200 will close the vent 111 and maintain the closed state of the vent 111 under the action of liquid pressure, thereby realizing the sealing and pressure holding functions of the container. When the liquid pressure inside the container is too high, or when the liquid inside the container continues to enter the valve body 100, the upper valve core 200 has been pushed to the highest position of the upper valve chamber 110 by the liquid. The liquid will then start to push the lower valve core 300 downward, causing it to move downward, so that the liquid enters the lower valve chamber 130 from the exhaust gap 301 and is discharged from the pressure relief port 131, thus realizing the pressure relief function.

[0028] When the liquid pressure inside the container decreases, the lower valve core 300 is lifted by the spring 400, disconnecting the connection between the lower valve chamber 130 and the central channel 120. This multi-functional valve design can simultaneously achieve venting, pressure holding and pressure relief functions, thereby reducing the number of control valves used, lowering production costs and simplifying the production process.

[0029] Reference Figure 1 and Figure 2 A sealing ring 230 is fitted onto the upper valve core 200, and a sealing sleeve 240 is installed inside the upper valve cavity 110. The sealing sleeve 240 is installed inside the air outlet 111. When the upper valve core 200 is pushed to the highest position of the upper valve cavity 110, the sealing ring 230 and the sealing sleeve 240 will come into close contact, so that the exhaust port is completely sealed and good sealing performance is maintained to prevent air leakage.

[0030] The upper valve core 200 mainly consists of a core block 210 and a valve stem 220. The valve stem 220 is located at the top of the core block 210 and passes upward through the through hole of the sealing sleeve 240. The sealing ring 230 is fitted onto the valve stem 220, and its lower end face is tightly attached to the top surface of the core block 210. When the upper valve core 200 is pushed to the highest position of the upper valve cavity 110, the core block 210 will press the sealing ring 230 tightly onto the sealing sleeve 240.

[0031] To prevent the sealing ring 230 from shifting on the valve stem 220, a protrusion 221 is provided on the outer wall of the valve stem 220, and the protrusion 221 is tightly attached to the upper end face of the sealing ring 230.

[0032] Reference Figure 1 and Figure 2 The lower valve core 300 is provided with a groove 310, and a sealing block 320 is installed in the groove 310. When the lower valve core 300 is at the highest position of the lower valve cavity 130, the sealing block 320 will be tightly attached to the lower port of the central channel 120, so that the connection between the lower valve cavity 130 and the central channel 120 is disconnected.

[0033] Reference Figure 1 and Figure 2 To facilitate connection to the pressure relief pipe, a pressure relief nozzle 500 is also installed. The pressure relief nozzle 500 includes an insert portion 510, which is inserted into the pressure relief port 131. A spring 400 is installed inside the nozzle, with its upper end contacting the bottom surface of the lower valve core 300. Specifically, the pressure relief nozzle 500 also includes a nozzle portion 520, which is located below the insert portion 510. Its inner cavity communicates with the inner cavity of the insert portion 510, and the nozzle portion 520 is connected to an external pipeline.

[0034] Reference Figure 1 and Figure 2It also includes an air outlet nozzle 600, which is connected to an air outlet pipe and installed on the valve body 100, covering the air outlet 111. Specifically, the air outlet nozzle 600 includes a cap 610 and an air outlet pipe 620, with the air outlet pipe 620 located on top of the cap 610. The cap 610 covers the valve body 100, positioning the air outlet pipe 620 above the air outlet 111, thereby allowing the air outlet pipe 620 to communicate with the upper valve chamber 110.

[0035] Reference Figure 1 and Figure 2 It also includes an air inlet nozzle 700, which is connected to the pressure vessel via an air inlet pipe and is inserted into the inlet 121.

[0036] In the description of this specification, references to terms such as "some embodiments" or "as one might imagine" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one embodiment or example.

[0037] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A multi-functional valve for liquid pressure vessels, characterized in that, include: The valve body (100) has an upper valve chamber (110), a central channel (120), and a lower valve chamber (130) arranged sequentially from top to bottom. The upper valve chamber (110), the lower valve chamber (130), and the central channel (120) are connected. The upper valve chamber (110) has an air outlet (111) at the top, and the lower valve chamber (130) has a pressure relief port (131) at the bottom. The central channel (120) has an inlet (121) which is connected to a pressure vessel through a pipeline. An upper valve core (200) is installed in the upper valve cavity (110). An air outlet gap (201) is formed between the outer wall of the upper valve core (200) and the inner wall of the upper valve cavity (110). When the upper valve core (200) moves upward to the highest position of the upper valve cavity (110), the top of the upper valve core (200) closes the air outlet (111). The lower valve core (300) is installed in the lower valve cavity (130). An exhaust gap (301) is formed between the outer wall of the lower valve core (300) and the inner wall of the lower valve cavity (130). A spring (400) is installed at the bottom of the lower valve core (300). When the lower valve core (300) is at the highest position of the lower valve cavity (130), the lower valve cavity (130) is disconnected from the central channel (120).

2. The multi-functional valve for liquid pressure vessels according to claim 1, characterized in that, A sealing ring (230) is fitted on the upper valve core (200), and a sealing sleeve (240) is installed inside the upper valve cavity (110). The sealing sleeve (240) is installed inside the air outlet (111). When the upper valve core (200) is pushed to the highest position of the upper valve cavity (110), the sealing sleeve (240) and the sealing ring (230) are in close contact to form a seal.

3. The multifunctional valve for liquid pressure vessels according to claim 2, characterized in that, The upper valve core (200) includes a core block (210) and a valve stem (220). The valve stem (220) is disposed on the top of the core block (210) and passes upward through the through hole of the sealing sleeve (240). The sealing ring (230) is fitted onto the valve stem (220), and the lower end face of the sealing ring (230) is in close contact with the top surface of the core block (210).

4. The multifunctional valve for liquid pressure vessels according to claim 3, characterized in that, The valve stem (220) has a raised ring (221) on its outer wall, and the raised ring (221) is in close contact with the upper end face of the sealing ring (230).

5. The multi-functional valve for liquid pressure vessels according to claim 1, characterized in that, The lower valve core (300) is provided with a groove (310), and a sealing block (320) is installed in the groove (310). When the lower valve core (300) is located at the highest position of the lower valve cavity (130), the sealing block (320) is in close contact with the lower port of the central channel (120).

6. The multi-functional valve for liquid pressure vessels according to claim 1, characterized in that, It also includes a pressure relief nozzle (500), which includes an insert (510) inserted into the pressure relief port (131). The spring (400) is installed in the inner cavity of the insert (510), and the upper end of the spring (400) contacts the bottom surface of the lower valve core (300).

7. The multi-functional valve for liquid pressure vessels according to claim 6, characterized in that, The pressure relief nozzle (500) also includes a nozzle part (520), which is disposed below the insert part (510), and the inner cavity of the nozzle part (520) communicates with the inner cavity of the insert part (510).

8. The multi-functional valve for liquid pressure vessels according to claim 1, characterized in that, It also includes an air outlet nozzle (600), which is mounted on the valve body (100) and covers the air outlet (111).

9. The multifunctional valve for liquid pressure vessels according to claim 8, characterized in that, The air outlet nozzle (600) includes a cap (610) and an air nozzle tube (620). The air nozzle tube (620) is disposed on the top of the cap (610). The cap (610) is mounted on the valve body (100) so that the air nozzle tube (620) is located above the air outlet (111) and communicates with the upper valve chamber (110).

10. The multifunctional valve for liquid pressure vessels according to claim 1, characterized in that, It also includes an air intake nozzle (700) inserted into the inlet (121).

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