Large-flow fan release valve with dynamic balance mechanism

Abstract

The utility model provides a large-flow fan release valve with a dynamic balance mechanism. The large-flow fan release valve comprises a valve seat and a valve body. One end of the valve body is provided with an inlet, the other end of the valve body is provided with an outlet, and one end of the inlet of the valve body is connected with the valve seat; a valve clack is arranged in the valve body, a containing cavity is formed in the valve clack, an air inlet is formed in one end of the containing cavity and abuts against the valve seat in a sealed mode, and the inlet is communicated with the air inlet. A dynamic balance ring is arranged in the containing cavity, a cavity is formed between the dynamic balance ring and the valve clack, and the cavity is communicated with the containing cavity. The valve clack is arranged in the valve body, the dynamic balance ring is arranged in the valve clack, when the pressure of the inlet section fluctuates, gas in the cavity enters the containing cavity of the valve clack, the opening height of the valve clack is maintained through the cavity between the dynamic balance ring and the valve clack, it is guaranteed that the valve clack is opened at the same height all the time, and the service life of the valve clack is prolonged. And the pressure and airflow of the outlet are more stable.

Description

Technical Field

[0001] The present application relates to the technical field of relief valves, and in particular to a high-flow blower relief valve with a dynamic balancing mechanism. Background Art

[0002] Relief valves are widely used in the field of modern manufacturing engineering technology. The function of the relief valve is to safely and reliably maintain the device working within the specified pressure range. When the pressure exceeds the maximum value, it can open immediately.

[0003] As relief valve technology is increasingly used in various industries, the performance of traditional relief valves is constantly improving, necessitating the development of new relief valve products that meet market demands. Currently, commonly used relief valves often encounter several issues: valve seal leakage under normal operating pressure of the fan, and frequent vibration when the relief valve is opened, causing pressure fluctuations. Consequently, these issues are far from meeting the diverse market demands. Summary of the Invention

[0004] In response to the defects in the existing technology, the purpose of this application is to provide a large-flow fan discharge valve with a dynamic balancing mechanism. A dynamic balancing ring is added to the valve disc. The opening height of the valve disc is maintained by the volume of gas in the chamber between the dynamic balancing ring and the valve disc, ensuring that the valve disc is always opened at a certain height, making the pressure and airflow at the outlet more stable.

[0005] In one aspect of the present application, there is provided a high-flow blower discharge valve with a dynamic balancing mechanism, comprising: a valve seat and a valve body;

[0006] One end of the valve body is provided with an inlet, and the other end is provided with an outlet, and one end of the inlet of the valve body is connected to the valve seat;

[0007] A valve disc is provided inside the valve body, and a housing cavity is provided inside the valve disc. An air inlet is provided at one end of the housing cavity and seals against the valve seat, and the inlet is communicated with the air inlet.

[0008] A dynamic balancing ring is provided in the accommodating cavity. A cavity is provided between the dynamic balancing ring and the valve disc, and the cavity is communicated with the accommodating cavity.

[0009] Furthermore, the cavity includes a first cavity provided on the inner wall of the other end of the valve disc,

[0010] The second cavity is provided at one end of the dynamic balancing ring abutting against the inner wall and is communicated with the first cavity.

[0011] Furthermore, a channel is provided between the cavity and the accommodating chamber, extending from the bottom of the second cavity to pass through the dynamic balancing ring;

[0012] A groove is further provided at the other end of the dynamic balancing ring away from the inner wall, and the groove is communicated with the second cavity through the channel.

[0013] Furthermore, the inner diameters of the groove and the second cavity are larger than the inner diameter of the channel;

[0014] The groove has the same inner diameter as the second cavity;

[0015] The groove, the channel and the second cavity are in an I-shaped structure.

[0016] Furthermore, it also includes a valve stem, which passes through the valve body, the valve disc and the valve seat;

[0017] A locking nut is provided at one end of the valve stem close to the inlet, and the valve stem is connected to the valve seat through the locking nut.

[0018] Furthermore, a protrusion is provided on the valve stem and is located in the accommodating cavity, and one end of the dynamic balancing ring abuts against the protrusion to limit the position of the dynamic balancing ring.

[0019] Furthermore, a limit bearing is provided between the valve stem and the valve disc, and is located at an end of the valve disc away from the air inlet;

[0020] The limit bearing is extended from one end of the valve disc toward the outlet direction;

[0021] The limit bearing is connected to the valve stem via a hexagonal nut, and a limit washer is provided between the limit bearing and the hexagonal nut.

[0022] Furthermore, a spring and a spring seat are provided inside the valve body, one end of which abuts against the valve disc and the other end abuts against the spring seat;

[0023] A first boss is provided at one end of the valve disc away from the air inlet, and one end of the spring is sleeved on the first boss;

[0024] The outer diameter of the first boss is smaller than the outer diameter of the valve disc.

[0025] Furthermore, one end of the valve seat and the valve disc is sealed with a second boss protruding toward the valve disc, and the air inlet is in sealing contact with the second boss;

[0026] The outer diameter of the second boss is smaller than the inner diameter of the valve body; the outer diameter of the valve disc is smaller than the inner diameter of the valve body.

[0027] Furthermore, an L-shaped fixing piece is provided on the outer peripheral wall of one end of the valve body, and the valve body is connected to the valve seat through the L-shaped fixing piece.

[0028] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0029] 1. The present application provides a valve disc in the valve body and a dynamic balancing ring in the valve disc. When gas enters the valve disc, when the pressure value at the inlet end reaches the set pressure value, the gas enters the accommodating cavity inside the valve disc and at the same time enters the cavity between the dynamic balancing ring and the valve disc. The valve disc is pushed to open the inlet under the influence of pressure, and the gas is discharged from the outlet. When the pressure in the inlet section fluctuates, for example, when the pressure decreases, the gas in the cavity enters the accommodating cavity of the valve disc, and the opening height of the valve disc is maintained by the cavity between the dynamic balancing ring and the valve disc, ensuring that the valve disc is always open at a height, so that the pressure and airflow at the outlet are more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0031] Figure 1 This is a cross-sectional view of a large-flow fan discharge valve with a dynamic balancing mechanism in one embodiment of the present application.

[0032] Figure 2 This is an overall appearance structural diagram of a large-flow fan discharge valve with a dynamic balancing mechanism in one embodiment of the present application.

[0033] Figure 3 This is a bottom view of a large-flow fan discharge valve with a dynamic balancing mechanism in one embodiment of the present application.

[0034] In the figure: 1. valve seat; 10. second boss; 2. valve body; 3. valve disc; 31. accommodating chamber; 311. air inlet; 32. first boss; 4. dynamic balancing ring; 41. channel; 42. groove; 5. cavity; 51. first cavity; 52. second cavity; 6. valve stem; 61. protrusion; 7. locking nut; 8. limit bearing; 9. hexagonal nut; 100. limit washer; 200. spring; 300. spring seat; 400. L-shaped fixing plate. DETAILED DESCRIPTION

[0035] The present application is described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present application, but are not intended to limit the present application in any form. It should be noted that those skilled in the art may make several variations and improvements without departing from the scope of the present application. These all fall within the scope of protection of the present application.

[0036] Reference Figure 1 As shown, a large-flow fan discharge valve with a dynamic balancing mechanism according to an embodiment of the present application includes: a valve seat 1 and a valve body 2.

[0037] An inlet is provided at one end of the valve body 2 and an outlet is provided at the other end. The inlet end of the valve body 2 is connected to the valve seat 1; a valve disc 3 is provided inside the valve body 2, and an accommodating cavity 31 is provided inside the valve disc 3. An air inlet 311 is provided at one end of the accommodating cavity 31 to seal against the valve seat 1, and the inlet is connected to the air inlet 311; a dynamic balancing ring 4 is provided in the accommodating cavity 31, and a cavity 5 is provided between the dynamic balancing ring 4 and the valve disc 3, and the cavity 5 is connected to the accommodating cavity 31.

[0038] The present application arranges a valve flap 3 in the valve body 2 and a dynamic balancing ring 4 in the valve flap 3. When gas enters the valve flap 3, when the pressure value at the inlet end reaches the set pressure value, the gas enters the accommodating cavity 31 in the valve flap 3, and at the same time enters the cavity 5 between the dynamic balancing ring 4 and the valve flap 3. The valve flap 3 is pushed to open the inlet by the pressure, and the gas is discharged from the outlet. When the pressure at the inlet end fluctuates, the gas in the cavity 5 enters the accommodating cavity 31 of the valve flap 3, and the opening height of the valve flap 3 is maintained by the cavity 5 between the dynamic balancing ring 4 and the valve flap 3, ensuring that the valve flap 3 is always opened at a height, so that the pressure and airflow at the outlet are more stable.

[0039] In some specific embodiments, the cavity 5 includes a first cavity 51 provided on the inner wall of the other end of the valve disc 3 , and a second cavity 52 provided at one end where the dynamic balancing ring 4 abuts against the inner wall and communicates with the first cavity 51 .

[0040] By setting the cavity 5 into a first cavity 51 and a second cavity 52, after the air enters the accommodating cavity 31 of the valve flap 3, it enters the first cavity 51 and the second cavity 52. ​​The pressure value for pushing the valve flap 3 can be set through the first cavity 51 and the second cavity 52, thereby increasing the area for storing gas in the cavity 5. When fluctuations occur, the gas stored in the cavity 5 can be allowed to enter the accommodating cavity 31, thereby realizing the function of dynamic balance and automatic adjustment of the valve flap 3, thereby meeting the diversified needs of the market.

[0041] Furthermore, a channel 41 is provided between the cavity 5 and the accommodating cavity 31 , which runs through the dynamic balancing ring 4 from the bottom of the second cavity 52 ; a groove 42 is further provided at the other end of the dynamic balancing ring 4 away from the inner wall, and the groove 42 is connected to the second cavity 52 through the channel 41 .

[0042] The inner diameters of the groove 42 and the second cavity 52 are larger than the inner diameter of the channel 41 ; the inner diameters of the groove 42 and the second cavity 52 are the same; the groove 42 , the channel 41 and the second cavity 52 form an I-shaped structure.

[0043] A channel 41 is provided between the cavity 5 and the accommodating cavity 31 to achieve communication, and a groove 42 is provided at the other end of the dynamic balancing ring 4. The diameters of the groove 42 and the second cavity 52 are larger than the diameter of the channel 41. During operation, the gas in the accommodating cavity 31 first enters the groove 42. Because the diameter of the channel 41 is smaller than the diameter of the second cavity 52, the pressure when entering the second cavity 52 from the channel 41 is increased. Then, when the gas pressure fluctuates, the gas in the second cavity 52 enters the accommodating cavity 31 through the channel 41, increasing the pressure when the gas flows, thereby achieving the effect of small fluctuations in the pressure and displacement at the outlet, greater stability, and longer service life.

[0044] In some specific embodiments, a valve stem 6 is further included, which passes through the valve body 2, the valve disc 3 and the valve seat 1; a locking nut 7 is provided at one end of the valve stem 6 close to the inlet, and the valve stem 6 is connected to the valve seat 1 through the locking nut 7.

[0045] By arranging a locking nut 7 at one end of the valve seat 1 close to the inlet and fixedly connected to the valve stem 6, the position of the valve disc 3 relative to the valve body 2 and the valve seat 1 is fixed by the valve stem 6, thereby improving the accuracy of the device.

[0046] like Figure 3 As shown, in some specific embodiments, a protrusion 61 is provided on the valve stem 6 and is located in the accommodating cavity 31 . One end of the dynamic balancing ring 4 abuts against the protrusion 61 to limit the position of the dynamic balancing ring 4 .

[0047] By providing a protrusion 61 on the outer peripheral wall of the valve stem 6 at the position of the accommodating chamber 31 and abutting against the dynamic balancing ring 4, the position of the dynamic balancing ring 4 in the accommodating chamber 31 is limited, the dynamic balancing ring 4 is prevented from moving during operation, and the stability of the pressure relief valve is improved.

[0048] In some specific embodiments, a limit bearing 8 is provided between the valve stem 6 and the valve disc 3, and is located at the end of the valve disc 3 away from the air inlet 311; the limit bearing 8 extends from one end of the valve disc 3 toward the outlet direction; the limit bearing 8 and the valve stem 6 are connected by a hexagonal nut 9, and a limit gasket 100 is provided between the limit bearing 8 and the hexagonal nut 9.

[0049] By arranging a limit bearing 8 between the valve stem 6 and the valve disc 3, the valve disc 3 moves along the limit bearing 8 when the valve disc 3 is working, and the opening height of the valve disc 3 is limited by the limit bearing 8. The hexagonal nut 9 on the valve stem 6 fixes the limit bearing 8, and the limit gasket 100 between the hexagonal nut 9 and the limit bearing 8 is used to protect the limit bearing 8.

[0050] Specifically, a high-performance, wear-resistant DU bearing is installed between the valve stem 6 and the valve disc 3. Its features include: it can operate without lubrication, exhibits low friction, is wear-resistant, and has a long service life. It also has a wide operating temperature range of -200°C to +280°C. Its high mechanical strength allows it to withstand large steady and dynamic loads. Its excellent corrosion resistance allows it to operate in various corrosive media (including liquids and gases), extending the life of the relief valve.

[0051] In some specific embodiments, a spring 200 and a spring seat 300 are further provided inside the valve body 2, one end of which abuts the valve disc 3, and the other end abuts the spring seat 300; a first boss 32 is provided at the end of the valve disc 3 away from the air inlet 311, and one end of the spring 200 is sleeved on the first boss 32; the outer diameter of the first boss 32 is smaller than the outer diameter of the valve disc 3.

[0052] By arranging a spring 200 and a spring seat 300 inside the valve body 2, and sleeved on the first boss 32 at one end of the valve disc 3 by one end of the spring 200, and abutting against the spring seat 300 at the other end, the position of the spring 200 is limited, and the opening height of the valve disc 3 is achieved by the spring 200. The pressure value of the gas is set by the strength of the spring 200 and / or the size of the cavity 5. To cope with different application scenarios, the outer diameter of the first boss 32 is smaller than the outer diameter of the valve disc 3, so as to prevent the spring 200 from moving between the spring seat 300 and the valve disc 3, thereby improving the stability of the spring 200.

[0053] In some specific embodiments, a second boss 10 protruding toward the valve disc 3 is provided at one end where the valve seat 1 is sealed with the valve disc 3, and the air inlet 311 is sealed and abutted against the second boss 10; the outer diameter of the second boss 10 is smaller than the inner diameter of the valve body 2; and the outer diameter of the valve disc 3 is smaller than the inner diameter of the valve body 2.

[0054] By setting a second boss 10 on the valve seat 1, it is sealed against the air inlet 311 of the valve disc 3. Specifically, the valve disc 3 adopts a knife-edge seal, and the sealing contact area between the valve disc 3 and the valve seat 1 is small. The valve seat 1 and the valve disc 3 are both precision-grinded, and the sealing performance is better.

[0055] Among them, the outer diameter of the second boss 10 is smaller than the inner diameter of the valve body 2, and the outer diameter of the valve flap 3 is smaller than the inner diameter of the valve body 2, so that a gas pressure relief channel is formed inside the valve body 2, and the gas enters from the inlet and is discharged from the pressure relief channel to the outlet through the opening of the valve flap 3.

[0056] In some specific embodiments, an L-shaped fixing piece 400 is provided on the outer peripheral wall of one end of the valve body 2 , and the valve body 2 is connected to the valve seat 1 through the L-shaped fixing piece 400 .

[0057] like Figure 2As shown, an L-shaped fixing plate 400 is provided on the outer peripheral wall of one end of the valve body 2 , and the valve body 2 is fixedly connected to the valve seat 1 through the L-shaped fixing plate 400 . Specifically, there are multiple L-shaped fixing plates 400 symmetrically arranged on the outer peripheral wall of the valve body 2 .

[0058] The working principle of the relief valve of the present application is: when the pressure at the inlet end reaches the set value, the valve disc 3 will slowly rise, at this time the relief valve opens, and the gas is discharged from the outlet for normal discharge. When the pressure at the inlet end fluctuates, the gas in the cavity 5 enters the valve disc 3 from the channel 41 of the dynamic balancing ring 4, and the opening height of the valve disc 3 is maintained by adjusting the space of the cavity 5, so that the outlet pressure and airflow are more stable.

[0059] The above describes the specific embodiments of the present application. It should be understood that the present application is not limited to the specific embodiments described above, and those skilled in the art may make various modifications or variations within the scope of the claims, which do not affect the substantive content of the present application. The above preferred features may be used in any combination as long as they do not conflict with each other.

Claims

1. A large flow fan discharge valve with a dynamic balancing mechanism, characterized in that: Including: valve seat and valve body; One end of the valve body is provided with an inlet, and the other end is provided with an outlet, and one end of the inlet of the valve body is connected to the valve seat; A valve disc is provided inside the valve body, and a housing cavity is provided inside the valve disc. An air inlet is provided at one end of the housing cavity and seals against the valve seat, and the inlet is communicated with the air inlet. A dynamic balancing ring is provided in the accommodating cavity. A cavity is provided between the dynamic balancing ring and the valve disc, and the cavity is communicated with the accommodating cavity.

2. A large flow fan discharge valve with a dynamic balancing mechanism according to claim 1, characterized in that: The cavity includes a first cavity provided on the inner wall of the other end of the valve flap, The second cavity is provided at one end of the dynamic balancing ring abutting against the inner wall and is communicated with the first cavity.

3. A large flow fan discharge valve with a dynamic balancing mechanism according to claim 2, characterized in that: A channel is provided between the cavity and the accommodating chamber, extending from the bottom of the second cavity to pass through the dynamic balancing ring; A groove is further provided at the other end of the dynamic balancing ring away from the inner wall, and the groove is communicated with the second cavity through the channel.

4. A large flow fan discharge valve with a dynamic balancing mechanism according to claim 3, characterized in that: The inner diameters of the groove and the second cavity are larger than the inner diameter of the channel; The groove has the same inner diameter as the second cavity; The groove, the channel and the second cavity are in an I-shaped structure.

5. A large flow fan discharge valve with a dynamic balancing mechanism according to claim 1, characterized in that: It also includes a valve stem, which passes through the valve body, the valve disc and the valve seat; A locking nut is provided at one end of the valve stem close to the inlet, and the valve stem is connected to the valve seat through the locking nut.

6. A large flow fan discharge valve with a dynamic balancing mechanism according to claim 5, characterized in that: The valve stem is provided with a protrusion located in the accommodating cavity, and one end of the dynamic balancing ring abuts against the protrusion to limit the position of the dynamic balancing ring.

7. A large flow blower discharge valve with a dynamic balancing mechanism according to claim 5, characterized in that: A limit bearing is provided between the valve stem and the valve disc, located at the end of the valve disc away from the air inlet; The limit bearing is extended from one end of the valve disc toward the outlet direction; The limit bearing is connected to the valve stem via a hexagonal nut, and a limit washer is provided between the limit bearing and the hexagonal nut.

8. A large flow blower discharge valve with a dynamic balancing mechanism according to claim 5, characterized in that: A spring and a spring seat are also provided inside the valve body, one end of which abuts against the valve disc and the other end abuts against the spring seat; A first boss is provided at one end of the valve disc away from the air inlet, and one end of the spring is sleeved on the first boss; The outer diameter of the first boss is smaller than the outer diameter of the valve disc.

9. A large flow blower discharge valve with a dynamic balancing mechanism according to claim 1, characterized in that: One end of the valve seat that seals with the valve disc is provided with a second boss that protrudes toward the valve disc, and the air inlet is in sealing contact with the second boss; The outer diameter of the second boss is smaller than the inner diameter of the valve body; the outer diameter of the valve disc is smaller than the inner diameter of the valve body.

10. A large flow blower discharge valve with a dynamic balancing mechanism according to claim 1, characterized in that: An L-shaped fixing piece is provided on the outer peripheral wall of one end of the valve body, and the valve body is connected to the valve seat through the L-shaped fixing piece.

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