Pneumatic emptying valve

Abstract

The utility model relates to the technical field of emptying valves, and discloses a pneumatic emptying valve which comprises a main pipeline and a valve body, the valve body is fixedly installed on one side of the main pipeline, an inner partition piece is fixedly connected in the valve body and located in the middle of the valve body, and one end of the inner partition piece is fixedly connected with an upper guide plate. According to the pneumatic emptying valve, through the structural design of the valve body and the inner partition piece and the combination of double supporting of the upper guide plate and the lower fixing plate, the mechanical strength and the pressure resistance of the valve body are remarkably improved, meanwhile, a filter sieve arranged at the bottom end of a through opening of the inner partition piece can effectively intercept particle impurities in a main pipeline, and damage to a valve element and an air bag cavity is avoided; and the reliability of the valve under complex working conditions is enhanced. The vertical-groove-shaped through groove formed in the surface of the valve element optimizes fluid distribution, local pressure concentration is reduced, the sealing ring on the surface of the valve plug is matched to be tightly attached to the inner wall of the valve element, the sealing performance under the extremely low pressure difference is ensured, and medium leakage is eradicated.

Description

Technical Field

[0001] This utility model relates to the field of venting valve technology, specifically a pneumatic venting valve. Background Technology

[0002] A vent valve is an essential accessory for blowers. Its function is to release pressure in the blower outlet pipe before the blower reaches its rated speed, preventing the blower from starting under pressure, preventing surge, and protecting the equipment.

[0003] Traditional vent valves have several shortcomings. For example, some vent valves have poor sealing performance and are prone to leakage when closed, which not only wastes resources and may pollute the environment but also affects the normal operation of the system. Other vent valves have complex operation methods, requiring frequent manual opening and closing, which increases labor costs and poses safety hazards in some special working environments. Furthermore, some existing vent valves have poor adaptability to different operating conditions and cannot meet diverse production needs.

[0004] Therefore, it is necessary to propose a pneumatic venting valve. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a pneumatic venting valve that enhances adaptability, meets diverse production needs, and solves the problems mentioned in the background art.

[0006] This utility model provides the following technical solution: a pneumatic venting valve, comprising a main pipe and a valve body, wherein the valve body is fixedly installed on one side of the main pipe, and an inner partition is fixedly connected inside the valve body, the inner partition being located in the middle of the valve body, an upper guide plate is fixedly connected to one end of the inner partition, the top end of the upper guide plate is connected to the top wall of the valve body, the upper guide plate is located on the side of the main pipe near the inner partition, a lower fixing plate is fixedly connected to the other end of the inner partition, the bottom end of the lower fixing plate is fixedly connected to the inner bottom of the valve body, a valve core is fixedly connected to the upper surface of the inner partition, a valve plug is provided inside the valve core, a valve stem is fixedly connected to the top end of the valve plug, a clamp is fixedly connected to the valve stem extending to the top end of the valve body, a protective shell is fixedly connected to the top end of the valve body, an air bladder is provided inside the protective shell, and the clamp passes through the bottom end of the air bladder and is fixedly connected to its top end.

[0007] Preferably, the bottom end of the upper guide plate is provided with an extension portion, and the position is lower than the lower surface of the inner partition.

[0008] Preferably, a filter screen is fixedly connected to the bottom end of the opening of the inner partition.

[0009] Preferably, the surface of the valve core is provided with a plurality of through grooves, the opening of the through grooves is configured as a vertical groove, and the surface of the valve plug is provided with a sealing ring, the surface of the sealing ring being tightly fitted with the inner wall of the valve core.

[0010] Preferably, a spring is fitted on the surface of the valve stem, the bottom end of the spring is in close contact with the top end of the valve plug, and the top end of the spring is in close contact with the inner top wall of the valve body.

[0011] Preferably, an air pipe is fixedly connected to the side of the main pipeline, and the other end of the air pipe extends through the valve body and the inner partition to the inside of the air bag. A switch is fixedly installed on the surface of the air pipe.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This pneumatic venting valve, through its structural design of the valve body and internal partition, combined with the dual support of the upper guide plate and lower fixed plate, significantly improves the mechanical strength and pressure resistance of the valve body. Simultaneously, the filter screen at the bottom of the internal partition's opening effectively intercepts particulate impurities in the main pipeline, preventing damage to the valve core and air chamber, and enhancing the valve's reliability under complex operating conditions. Vertical grooves on the valve core surface optimize fluid distribution, reducing localized pressure concentration. Combined with the sealing ring on the valve plug surface, they tightly adhere to the inner wall of the valve core, ensuring sealing performance under extremely low pressure differentials and preventing media leakage. Furthermore, a spring sleeve on the valve stem surface forms an elastic reset mechanism, which can quickly push the valve plug to reset and close when the air chamber depressurizes, improving responsiveness. Pre-tightening force also helps maintain a low-pressure sealing state, reducing energy consumption and noise. The air tube is directly connected to the main pipeline and the airbag. The valve plug is driven by the pressure of the main pipeline itself. Combined with the flexible control of the switch, the system configuration is simplified and adapted to multiple scenarios, such as emergency cut-off or pressure fine adjustment. Ultimately, it achieves rapid response, efficient sealing and stable operation under low pressure conditions, while reducing maintenance needs and energy waste. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the valve body of this utility model;

[0017] Figure 3This is a cross-sectional view of the internal partition of this utility model.

[0018] The attached diagram lists the components represented by each number as follows:

[0019] 100. Main pipeline;

[0020] 200. Valve body;

[0021] 300. Inner partition; 301. Upper guide plate; 302. Lower fixed plate; 303. Valve core; 304. Through groove; 305. Filter screen;

[0022] 400. Valve plug; 401. Sealing ring; 402. Spring; 403. Valve stem; 404. Collar;

[0023] 500, Protective shell; 501, Airbag;

[0024] 600, trachea; 601, switch. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figures 1-3As shown, a pneumatic vent valve includes a main pipe 100 and a valve body 200. The valve body 200 is fixedly installed on one side of the main pipe 100. An inner partition 300 is fixedly connected inside the valve body 200, located in the middle of the valve body 200. An upper guide plate 301 is fixedly connected to one end of the inner partition 300, and the top end of the upper guide plate 301 is connected to the top wall of the valve body 200. The upper guide plate 301 is located near the side of the main pipe 100 on the inner partition 300. A lower fixing plate 302 is fixedly connected to the other end of the inner partition 300, and the bottom end of the lower fixing plate 302 is fixedly connected to the inner bottom of the valve body 200. The upper part of the inner partition 300... A valve core 303 is fixedly connected to the surface of the valve body 200. Inside the valve core 303 is a valve plug 400. A valve stem 403 is fixedly connected to the top of the valve plug 400. A clamp 404 is fixedly connected to the top of the valve stem 403 extending to the top of the valve body 200. A protective shell 500 is fixedly connected to the top of the valve body 200. An air bladder 501 is housed inside the protective shell 500. The clamp 404 passes through the bottom of the air bladder 501 and is fixedly connected to its top. This pneumatic venting valve uses an internal partition 300 to divide the valve body 200 into structurally stable chambers. Combined with the upper guide plate 301 and the lower fixed plate 302, this forms a double support, enhancing the overall mechanical strength and pressure resistance of the valve body. The cooperative design of the valve core 303 and valve plug 400, combined with the air bladder 501 driving the valve stem 403 to rise and fall, enables rapid response to pressure fluctuations in the main pipeline 100. The protective shell 500's encapsulation of the air bladder 501 effectively prevents external environmental corrosion, improving the durability and sealing performance of the pneumatic components. This structure ensures a tight seal of the valve plug 400 even under low-pressure conditions through precise airbag actuation, preventing air leakage and energy waste, while also simplifying the assembly process.

[0027] Preferably, the bottom end of the upper guide plate 301 is provided with an extension portion, which is positioned below the lower surface of the inner partition 300. The extension portion at the bottom end of the upper guide plate 301 is designed to extend below the inner partition 300, which can guide the fluid to flow along a specific path, reduce the impact of turbulence on the valve core 303, and reduce vibration and noise. The extension portion can also serve as an auxiliary support, further improving the stability of the inner partition 300, preventing deformation caused by sudden pressure changes, thereby extending the service life of the valve.

[0028] In a further preferred embodiment, a filter screen 305 is fixedly connected to the bottom end of the opening of the inner partition 300. The filter screen 305, fixed to the bottom end of the opening of the inner partition 300, can effectively intercept particulate impurities in the main pipeline 100, preventing them from entering the valve core 303 or the air bladder 501 chamber, thus preventing wear on the sealing surfaces of the valve plug 400 and the valve core 303, and significantly improving the reliability of the valve under complex operating conditions. Furthermore, this design reduces maintenance frequency and lowers the risk of failure due to blockage.

[0029] In a further preferred embodiment, the surface of the valve core 303 is provided with several through grooves 304, the openings of which are vertical grooves. A sealing ring 401 is provided on the surface of the valve plug 400, and the surface of the sealing ring 401 is in close contact with the inner wall of the valve core 303. The vertical grooves 304 on the surface of the valve core 303 optimize the distribution of fluid during passage, reduce local pressure concentration, and prevent the valve plug 400 from jamming due to uneven force. The tight fit between the sealing ring 401 and the inner wall of the valve core 303 further enhances the sealing performance in the closed state, effectively preventing media leakage even under extremely low pressure differentials, ensuring safe and efficient system operation.

[0030] In a further preferred embodiment, a spring 402 is fitted onto the surface of the valve stem 403. The bottom end of the spring 402 is tightly fitted against the top end of the valve plug 400, and the top end of the spring 402 is tightly fitted against the inner top wall of the valve body 200. The spring 402 is fitted onto the surface of the valve stem 403, with its two ends abutting against the valve plug 400 and the top wall of the valve body 200, respectively, forming an elastic reset mechanism. When the air bladder 501 is depressurized, the spring 402 can quickly push the valve plug 400 to reset and close, reducing response delay. This design not only improves the sensitivity of valve operation but also helps maintain a sealing state under low pressure through spring preload, further reducing energy consumption and noise.

[0031] In a further preferred embodiment, an air pipe 600 is fixedly connected to the side of the main pipeline 100. The other end of the air pipe 600 extends through the valve body 200 and the inner partition 300 into the interior of the air bladder 501. A switch 601 is fixedly installed on the surface of the air pipe 600. The air pipe 600 directly connects the main pipeline 100 and the air bladder 501. Combined with the control of the air circuit by the switch 601, the inflation and deflation of the air bladder is made more convenient. This structure does not require an external air source and directly uses the pressure of the main pipeline itself to drive the valve plug, simplifying system configuration and reducing costs. The flexible control of the switch 601 can also adapt to different working conditions, such as emergency shut-off or pressure fine-tuning, improving the multi-scenario applicability of the valve.

[0032] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pneumatic vent valve comprising a main pipe (100) and a valve body (200), characterized in that: The valve body (200) is fixedly installed on one side of the main pipeline (100), the inner partition (300) is fixedly connected inside the valve body (200), the inner partition (300) is located at the middle position of the valve body (200), one end of the inner partition (300) is fixedly connected with the upper guide plate (301), the top end of the upper guide plate (301) is connected with the top wall of the valve body (200), the upper guide plate (301) is located on the side of the main pipeline (100) near the inner partition (300), the other end of the inner partition (300) is fixedly connected with the lower fixed plate (302), the bottom end of the lower fixed plate (302) is fixedly connected with the inner bottom of the valve body (200), the upper surface of the inner partition (300) is fixedly connected with the valve core (303), the valve plug (400) is arranged inside the valve core (303), the valve rod (403) is fixedly connected with the top end of the valve plug (400), the chuck (404) is fixedly connected with the valve rod (403) extending to the top end of the valve body (200), the protective shell (500) is fixedly connected with the top end of the valve body (200), the air bag (501) is arranged inside the protective shell (500), and the chuck (404) is fixedly connected with the bottom end of the air bag (501).

2. A pneumatic vent valve according to claim 1, characterized in that: The bottom end of the upper guide plate (301) is provided with an extension part, and the position is lower than the lower surface of the inner partition (300).

3. A pneumatic vent valve according to claim 1, characterized in that: The bottom end of the through hole of the inner partition (300) is fixedly connected with the filter screen (305).

4. A gas loaded vent valve according to claim 1, characterized in that: A plurality of through grooves (304) are formed in the surface of the valve core (303), the groove opening of the through groove (304) is in a vertical groove shape, the surface of the valve plug (400) is provided with a sealing ring (401), and the surface of the sealing ring (401) is tightly attached to the inner wall of the valve core (303).

5. A pneumatic vent valve according to claim 1, characterized in that: The surface of the valve rod (403) is sleeved with a spring (402), the bottom end of the spring (402) is tightly attached to the top end of the valve plug (400), and the top end of the spring (402) is tightly attached to the inner top wall of the valve body (200).

6. A pneumatic vent valve according to claim 1, characterized in that: The side surface of the main pipeline (100) is fixedly connected with the air pipe (600), the other end of the air pipe (600) extends to the inside of the air bag (501) through the valve body (200) and the inner partition (300), and the surface of the air pipe (600) is fixedly installed with a switch (601).

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