Combined type quick exhaust valve with overpressure protection function
By introducing a regulating chamber and guide seat into the composite fast exhaust valve, the drainage assembly and magnets are used to improve the exhaust rate and sealing efficiency, the problems of low exhaust efficiency and easy damage in the prior art are solved, and overpressure protection is achieved and prolong service life.
Patent Information
- Application Number
- CN202411428948.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-01-07
AI Technical Summary
During use, the existing composite fast exhaust valve has low exhaust efficiency and is susceptible to impact damage, which affects the service life. The floating ball is subject to a relatively single force, making it difficult to effectively prevent overpressure.
A composite fast exhaust valve with overpressure protection function is designed. By setting up a control chamber and guide seat, the drainage assembly and magnet drive the float to rotate, adjust the overflow cross-sectional area of the exhaust gas, and flow through spiral and magnetic. The suction effect increases the exhaust rate, avoids fixed-point contact, and increases sealing efficiency.
It improves the exhaust rate and sealing efficiency, extends the service life, effectively prevents the impact of overpressure on the valve, and ensures operating safety.
Smart Images
Figure CN119267615A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of exhaust valves, in particular to a composite quick exhaust valve with an overpressure protection function. Background Art
[0002] The composite quick exhaust valve is generally used at the highest point in the pipeline system or in places where there is air blockage. It is used to discharge the gas in the pipeline system, thereby unblocking the pipeline and ensuring the normal operation of the pipeline system.
[0003] At present, the existing exhaust valves are mostly used in a passive adjustment mode during use, that is, exhaust is carried out in a normally open manner, the flow cross-sectional area remains constant, the exhaust efficiency is relatively fixed, and when the external pressure is relatively fixed, exhaust can only be carried out by relying on the pressure difference between the high pressure of the conveying fluid and the external gas, and the exhaust rate is not high.
[0004] In addition, during the float-type exhaust process, the force applied to the float is mostly vertical force, which is relatively single. As a result, when the liquid pushes the float to float up, the impact point is fixed, which can easily cause cumulative impact damage and affect the service life. Summary of the invention
[0005] The object of the present invention is to provide a composite quick exhaust valve with an overpressure protection function to solve the problems raised in the prior art.
[0006] To achieve the above object, the present invention provides the following technical solutions: A composite quick exhaust valve with an overpressure protection function, the quick exhaust valve comprising a valve body, an opening and closing device, an adjusting device and a valve cover, an adjusting chamber is provided on the valve body, an opening is provided on the upper side of the adjusting chamber, the valve cover is located at the opening of the adjusting chamber, the valve cover and the valve body are tightly connected, the opening and closing device are respectively connected to the valve body and the valve cover, the adjusting device is connected to the opening and closing device, and the adjusting device is used to adjust the flow cross-sectional area of the outlet gas.
[0007] The valve body is the main supporting component and is used to install other devices. The opening and closing device is used to control the intake and exhaust. When the internal air pressure increases, it opens for exhaust. When the internal air pressure is low, it opens for intake. A composite design is adopted to improve the stability of fluid transportation. By setting an adjustment device, the flow cross-sectional area during air outlet is adjusted. When the internal instantaneous pressure increases, the flow cross-sectional area of air outlet is increased to perform over-pressure protection to prevent excessive air pressure from affecting the overall operating safety of the valve.
[0008] Furthermore, the valve body is provided with an air inlet, the upper end of which is connected to the regulating chamber pipeline, the opening and closing device includes a float and a drainage component, the drainage component is placed in the air inlet, the valve cover is provided with an air outlet, the air outlet is connected to the regulating chamber, the float is placed in the regulating chamber, and the upper end of the air inlet faces the float; The regulating device includes a guide seat, and the opening and closing device also includes a valve stem. The upper end of the valve stem is tightly connected to the guide seat, and a cap is provided at the lower end of the valve stem. The cap is spherical, the inner cavity of the cap is adapted to the outer circle of the float, the upper side of the cap is adapted to the bottom side of the valve cover, and a plurality of through grooves are provided on the guide seat.
[0009] The valve body is connected to the pipeline system through the air inlet. When the fluid enters, the gas and liquid will flow in from the air inlet under the action of pressure, and adjust the flow direction of the fluid through the drainage component. The drainage component drives the fluid to flow into the regulating chamber in a spiral shape, and drives the float to rotate. During the rotation of the float, under the action of gas viscosity resistance, the gas is driven to centrifuge toward the wall of the regulating chamber. The gas is compressed toward the wall of the regulating chamber under the action of centrifugal force, increasing the pressure of the gas attached to the wall. When the external air pressure is constant, the gas pressure difference on both sides of the outlet is increased to increase the exhaust rate. The upper side of the cap is also set in an arc shape. When the liquid level entering the regulating chamber rises, the float floats up under the action of buoyancy and drives the cap to move up, pressing the upper side of the cap on the lower surface of the valve cover to prevent the liquid from flowing out. A sealing layer can be added to the lower surface of the valve cover to improve the sealing efficiency. The outlet is connected on both sides through the through groove for exhaust.
[0010] Furthermore, the guide assembly includes a base, which is placed and fastened to the inner wall of the air inlet. A plurality of guide vanes are arranged circumferentially on the base, and the guide vanes are arranged in a spiral shape, with flow gaps being provided between adjacent guide vanes.
[0011] The base is fixed on the inner wall of the air inlet and is used to install and fix the guide vane. The guide vane is designed in a spiral shape to guide the liquid, so that under the action of the guide vane, the liquid enters the regulating chamber in a spiral shape and flows in the regulating chamber in a spiral shape. The spiral flow of the liquid drives the float to rotate, so that after the float floats up, it will not always be in fixed-point contact with the inside of the cap, so that the contact point is in a changing state, thereby avoiding the accumulation of local impact damage and affecting the service life.
[0012] Furthermore, the drainage assembly also includes a transmission cover and a magnet. The transmission cover is placed in the air inlet, the transmission cover is located above the base, the transmission cover and the air inlet are rotatably connected, the transmission cover is hollowed out, the transmission cover and the floating ball are adapted, and a magnet is provided at the relative position of the cap and the transmission cover; During transmission: friction transmission between the float and the transmission cover.
[0013] The transmission cover is installed through the air inlet. The transmission cover is hollowed out to facilitate the passage of fluid. Since the liquid transportation in the pipeline system is in a fluctuating state and the gas compression is relatively large, when the instantaneous liquid volume increases, it will cause local overpressure. When the instantaneous liquid volume increases, the instantaneous speed of the liquid flowing through the guide vane increases. The liquid passing through the guide vane enters the regulating cavity, driving the speed of the float to increase. The float drives the transmission cover to rotate through friction transmission. Through the magnets set relatively, when the transmission cover rotates, the cap is driven to rotate under the action of magnetic attraction.
[0014] Furthermore, a plurality of guide vanes are arranged at unequal intervals along the central axis of the base.
[0015] By setting the guide vanes at unequal intervals, the liquid flowing through the guide vanes exerts different forces on the float, so that the float not only moves along the vertical axis, but also rotates horizontally, making the contact between the outer points of the float and the cap random, avoiding fixed-point contact and affecting the service life.
[0016] Furthermore, a plurality of contraction grooves are provided on the guide seat, the through grooves are connected to the contraction grooves, the contraction grooves are of two-stage design, the adjustment device also includes a sensing component, the sensing component is connected to the contraction groove, the sensing component includes a centrifugal block and a fan plate, the centrifugal block and the contraction groove are slidably connected, a preload spring is provided on the side of the centrifugal block close to the guide seat, the preload spring is tightly connected to the wall of the contraction groove at one end away from the centrifugal block, one side of the centrifugal block is transmission-connected to the fan plate, the two ends of the fan plate are respectively inserted into the two sections of the contraction groove, the fan plate and the contraction groove are slidably connected, and a flow groove is provided on the fan plate; During fast discharge: the centrifugal block slides to the outside of the contraction groove, and the overlapping area of the flow groove and the through groove increases.
[0017] The contraction groove is set in two sections and is cut off by a through groove. The two sections are located on both sides of the through groove, with built-in centrifugal blocks. The two ends of the fan plate are respectively inserted into the two sides of the contraction groove. Through the sliding connection, it can rotate along the guide seat. When the cap rotates, it drives the valve stem to rotate, thereby driving the guide seat to rotate. The centrifugal block in the contraction groove is affected by the centrifugal force, slides along the contraction groove, and pushes the fan plate to extend from one side of the contraction groove. During the extension process, the overlapping area of the flow groove and the through groove increases. The increase in the overlapping area means that the local flow cross-section increases, thereby improving the exhaust rate.
[0018] As an optimization, the contraction slot is arranged at an angle, and the centrifugal block is located at the lower end of the contraction slot. When the instantaneous flow rate decreases, the speed of the guide seat decreases, that is, the centrifugal force on the centrifugal block decreases, and the centrifugal block is reset under the tension of the preload spring. Through the inclined arrangement of the contraction slot, the fan plate moves downward under the action of gravity until it is reset.
[0019] As an optimization, a transmission plate is provided on one side of the centrifugal block, the centrifugal block and the transmission plate are hinged, and the transmission plate is in surface contact with the fan plate on the side away from the centrifugal block. By providing the transmission plate, the centrifugal block drives the transmission plate to move during sliding, and the transmission plate and the fan plate are always in a surface contact transmission state through the hinge, thereby ensuring the transmission efficiency.
[0020] As an optimization, the adjustment device also includes a limit plate, which is placed in the air outlet and located at the lower side of the guide seat. By setting the limit plate, the lowest point of the guide seat is set, and the guide seat is limited and supported by the limit plate.
[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: the flow direction of the fluid is adjusted by the drainage component, the fluid is driven to flow into the regulating chamber in a spiral shape by the drainage component, and the float is driven to rotate. During the rotation of the float, the gas is driven to centrifuge toward the wall of the regulating chamber under the action of the gas viscosity resistance. The gas is compressed toward the wall of the regulating chamber under the action of the centrifugal force, thereby increasing the pressure of the gas adhering to the wall. When the external air pressure is constant, the gas pressure difference on both sides of the air outlet is increased, thereby increasing the exhaust rate. The float is driven to rotate by the spiral flow of the liquid, so that after the float floats up, it will not always be in fixed-point contact with the inner side of the cap, so that the contact point is in a variable state, thereby avoiding It causes local impact damage accumulation and affects the service life. When the instantaneous liquid volume increases, it will cause local overpressure. When the instantaneous liquid volume increases, the instantaneous speed of the liquid flowing through the guide vane increases, and the liquid passing through the guide vane enters the regulating chamber, driving the float speed to increase. The float drives the transmission cover to rotate through friction transmission; when the cap rotates, it drives the valve stem to rotate, thereby driving the guide seat to rotate. The centrifugal block in the contraction groove is affected by the centrifugal force, slides along the contraction groove, and pushes the fan plate to extend from one side of the contraction groove. During the extension process, the overlapping area of the flow groove and the through groove increases. The increase in the overlapping area means that the local flow cross-section increases, thereby increasing the exhaust rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the present invention; Figure 3 It is a structural schematic diagram of the present invention; Figure 4 It is a structural schematic diagram of the present invention; Figure 5 It is a structural schematic diagram of the present invention; Figure 6 It is a structural schematic diagram of the present invention.
[0023] In the figure: 1. valve body; 11. air inlet; 12. regulating chamber; 2. opening and closing device; 21. float; 22. cover cap; 23. valve stem; 24. drainage assembly; 241. base; 242. guide vane; 243. transmission cover; 244. magnet; 3. regulating device; 31. guide seat; 311. contraction groove; 312. through groove; 32. induction assembly; 321. centrifugal block; 322. transmission plate; 323. fan plate; 3231. flow groove; 324. preload spring; 33. limit plate; 4. valve cover; 41. air outlet. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0025] Example: Figure 1-Figure 6 As shown, the present invention provides a technical solution of a composite quick exhaust valve with an overpressure protection function.
[0026] A composite quick exhaust valve with an overpressure protection function, the quick exhaust valve comprises a valve body 1, an opening and closing device 2, an adjusting device 3 and a valve cover 4, the valve body 1 is provided with an adjusting chamber 12, the upper side of the adjusting chamber 12 is opened, the valve cover 4 is located at the opening of the adjusting chamber 12, the valve cover 4 and the valve body 1 are fastened together, the opening and closing device 2 are respectively connected to the valve body 1 and the valve cover 4, the adjusting device 3 is connected to the opening and closing device 2, and the adjusting device 3 is used to adjust the flow cross-sectional area of the outlet gas.
[0027] The valve body 1 is used as the main supporting component for installing other devices. The opening and closing device 2 is used to control the air intake and exhaust. It opens when the internal air pressure increases to exhaust, and opens when the internal air pressure is low to intake. A composite design is adopted to improve the stability of fluid transportation. The flow cross-sectional area during air outlet is adjusted by setting the regulating device 3. When the internal instantaneous pressure increases, the flow cross-sectional area of the air outlet is increased to perform overpressure protection to prevent excessive air pressure from affecting the overall operating safety of the valve.
[0028] Furthermore, the valve body 1 is provided with an air inlet 11, the upper end of the air inlet 11 is connected to the regulating chamber 12 by a pipeline, the opening and closing device 2 includes a float 21 and a drainage component 24, the drainage component 24 is placed in the air inlet 11, the valve cover 4 is provided with an air outlet 41, the air outlet 41 is connected to the regulating chamber 12, the float 21 is placed in the regulating chamber 12, and the upper end of the air inlet 11 faces the float 21; The regulating device 3 includes a guide seat 31, and the opening and closing device 2 also includes a valve stem 23. The upper end of the valve stem 23 is tightly connected to the guide seat 31, and a cap 22 is provided at the lower end of the valve stem 23. The cap 22 is spherical, and the inner cavity of the cap 22 is adapted to the outer circle of the float 21. The upper side of the cap 22 is adapted to the bottom side of the valve cover 4, and a plurality of through grooves 312 are provided on the guide seat 31.
[0029] The valve body 1 is connected to the pipeline system through the air inlet 11. When the fluid enters, the gas and liquid will flow in from the air inlet 11 under the action of pressure, and the flow direction of the fluid will be adjusted through the drainage component 24. The drainage component 24 drives the fluid to flow into the regulating chamber 12 in a spiral shape, and drives the float 21 to rotate. During the rotation of the float 21, under the action of gas viscous resistance, the gas is driven to centrifuge toward the wall of the regulating chamber 12. Under the action of centrifugal force, the gas is compressed toward the wall of the regulating chamber 12, thereby increasing the pressure of the gas attached to the wall. When the external air pressure is constant, the gas pressure difference on both sides of the outlet 41 is increased, thereby increasing the exhaust rate. The upper side of the cap 22 is also arranged in an arc shape. When the liquid level entering the regulating chamber 12 rises, the float 21 floats up under the action of buoyancy and drives the cap 22 to move upward, pressing the upper side of the cap 22 against the lower surface of the valve cover 4 to prevent the liquid from flowing out. A sealing layer can be added to the lower surface of the valve cover 4 to improve the sealing efficiency. The air outlet 41 is connected on both sides through the through groove 312 for exhaust.
[0030] Furthermore, the guide assembly 24 includes a base 241 , which is placed and fastened to the inner wall of the air inlet 11 . A plurality of guide vanes 242 are circumferentially arranged on the base 241 . The guide vanes 242 are spirally arranged, and flow gaps are provided between adjacent guide vanes 242 .
[0031] The base 241 is fixed on the inner wall of the air inlet 11 and is used to install and fix the guide vane 242. The guide vane 242 is designed in a spiral shape to guide the liquid, so that under the action of the guide vane 242, the liquid enters the regulating chamber 12 in a spiral shape and flows in the regulating chamber 12 in a spiral shape. The spiral flow of the liquid drives the float 21 to rotate, so that after the float 21 floats up, it will not always be in fixed-point contact with the inner side of the cap 22, so that the contact point is in a changing state, thereby avoiding the accumulation of local impact damage and affecting the service life.
[0032] Furthermore, the drainage assembly 24 further includes a transmission cover 243 and a magnet 244. The transmission cover 243 is placed in the air inlet 11, the transmission cover 243 is located above the base 241, the transmission cover 243 and the air inlet 11 are rotatably connected, the transmission cover 243 is hollowed out, the transmission cover 243 and the float 21 are adapted, and a magnet 244 is provided at a relative position between the cap 22 and the transmission cover 243; During transmission: the float 21 and the transmission cover 243 are frictionally transmitted.
[0033] The transmission cover 243 is installed through the air inlet 11. The transmission cover adopts a hollow setting 243 to facilitate the passage of fluid. Since the liquid transportation in the pipeline system is in a fluctuating state, the gas compression is relatively large, so when the instantaneous liquid volume increases, it will cause local overpressure. When the instantaneous liquid volume increases, the instantaneous speed of the liquid flowing through the guide vane 242 increases, and the liquid passing through the guide vane 242 enters the regulating chamber 12, driving the speed of the float 21 to increase. The float 21 drives the transmission cover 243 to rotate through friction transmission. Through the magnets 244 arranged relatively, when the transmission cover 243 rotates, the cap 22 is driven to rotate under the action of magnetic attraction.
[0034] Furthermore, a plurality of guide vanes 242 are arranged at unequal intervals along the central axis of the base 241 .
[0035] By arranging the guide vanes 242 at unequal intervals, the liquid flowing through the guide vanes 242 exerts different forces on the float 21, so that the float 21 not only moves along the vertical axis but also rotates horizontally, so that the contact between the outer points of the float 21 and the cap 22 is random, avoiding fixed-point contact and affecting the service life.
[0036] Furthermore, the guide seat 31 is provided with a plurality of contraction grooves 311, the through grooves 312 are connected to the contraction grooves 311, the contraction grooves 311 are of a two-stage design, the adjustment device 3 also includes a sensing component 32, the sensing component 32 is connected to the contraction groove 311, the sensing component 32 includes a centrifugal block 321 and a fan plate 323, the centrifugal block 321 and the contraction groove 311 are slidably connected, a preload spring 324 is provided on the side of the centrifugal block 321 close to the guide seat 31, the preload spring 324 is fastened to the wall of the contraction groove 311 at one end away from the centrifugal block 321, one side of the centrifugal block 321 is transmission-connected to the fan plate 323, the two ends of the fan plate 323 are respectively inserted into the two sections of the contraction groove 311, the fan plate 323 and the contraction groove 311 are slidably connected, and a flow groove 3231 is provided on the fan plate 323; During fast discharge, the centrifugal block 321 slides toward the outside of the contraction groove 311, and the overlapping area of the flow groove 3231 and the through groove 312 increases.
[0037] The contraction groove 311 is arranged in two sections and is cut off by the through groove 312. The two sections are located on both sides of the through groove 312, and a centrifugal block 321 is built in. The two ends of the fan plate 323 are respectively inserted into the two sides of the contraction groove 311. Through the sliding connection, it can rotate along the guide seat 31. When the cap 22 rotates, it drives the valve stem 23 to rotate, thereby driving the guide seat 31 to rotate. The centrifugal block 321 in the contraction groove 311 is subjected to the centrifugal force, slides along the contraction groove 311, and pushes the fan plate 323 to extend from one side of the contraction groove 311. During the extension process, the overlapping area of the flow groove 3231 and the through groove 312 increases. The increase in the overlapping area means that the local flow cross section increases, thereby improving the exhaust rate.
[0038] As an optimization, the contraction groove 311 is arranged at an angle, and the centrifugal block 321 is located at the lower end of the contraction groove 311. When the instantaneous flow rate decreases, the rotation speed of the guide seat 31 decreases, that is, the centrifugal force on the centrifugal block 321 decreases, and the centrifugal block 321 is reset under the spring tension of the preload spring 324. The contraction groove 311 is arranged at an angle, and under the action of gravity, the fan plate 323 moves downward until it is reset.
[0039] As an optimization, a transmission plate 322 is provided on one side of the centrifugal block 321. The centrifugal block 321 and the transmission plate 322 are hinged, and the transmission plate 322 is in surface contact with the fan plate 323 on the side away from the centrifugal block 321. By providing the transmission plate 322, the centrifugal block 321 can drive the transmission plate 322 to move during its sliding process, and the transmission plate 322 and the fan plate 323 are always in a surface contact transmission state through the hinge, thereby ensuring the transmission efficiency.
[0040] As an optimization, the adjustment device 3 further includes a limit plate 33, which is placed in the air outlet 41 and located at the lower side of the guide seat 31. By setting the limit plate 33, the lowest point of the guide seat 31 is set, and the guide seat 31 is limited and supported by the limit plate 33.
[0041] The working principle of the present invention is as follows: the flow direction of the fluid is adjusted by the drainage component 24, and the fluid is driven to flow into the regulating chamber 12 in a spiral shape by the drainage component 24, and the float 21 is driven to rotate. During the rotation of the float 21, the gas is driven to centrifuge toward the wall of the regulating chamber 12 under the action of gas viscosity resistance. The gas is compressed toward the wall of the regulating chamber 12 under the action of centrifugal force, and the pressure of the gas attached to the wall is increased. When the external air pressure is constant, the gas pressure difference on both sides of the air outlet 41 is increased to increase the exhaust rate; the float 21 is driven to rotate by the spiral flow of the liquid, so that after the float 21 floats up, it will not always be in fixed-point contact with the inner side of the cap 22, so that the contact point is in a variable state, thereby avoiding the accumulation of local impact damage and affecting the use. When the instantaneous liquid volume increases, it will cause local overpressure. When the instantaneous liquid volume increases, the instantaneous speed of the liquid flowing through the guide vane 242 increases, and the liquid passing through the guide vane 242 enters the regulating chamber 12, driving the rotation speed of the float 21 to increase. The float 21 drives the transmission cover 243 to rotate through friction transmission; when the cap 22 rotates, it drives the valve stem 23 to rotate, thereby driving the guide seat 31 to rotate, and the centrifugal block 321 in the contraction groove 311 is acted upon by centrifugal force, slides along the contraction groove 311, and pushes the fan plate 323 to extend from one side of the contraction groove 311. During the extension process, the overlapping area of the flow groove 3231 and the through groove 312 increases. The increase in the overlapping area means that the local flow cross section increases, thereby increasing the exhaust rate.
[0042] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.
Claims
1. A composite quick exhaust valve with overpressure protection function, characterized in that: The quick exhaust valve comprises a valve body (1), an opening and closing device (2), an adjusting device (3) and a valve cover (4); the valve body (1) is provided with an adjusting chamber (12); the adjusting chamber (12) is provided with an opening on the upper side; the valve cover (4) is located at the opening of the adjusting chamber (12); the valve cover (4) and the valve body (1) are tightly connected; the opening and closing device (2) is connected to the valve body (1) and the valve cover (4) respectively; the adjusting device (3) is connected to the opening and closing device (2); and the adjusting device (3) is used to adjust the flow cross-sectional area of the outlet gas.
2. The composite quick exhaust valve with overpressure protection function according to claim 1, characterized in that: The valve body (1) is provided with an air inlet (11), the upper end of the air inlet (11) is connected to a pipe of the regulating chamber (12), the opening and closing device (2) comprises a float (21) and a drainage component (24), the drainage component (24) is arranged in the air inlet (11), the valve cover (4) is provided with an air outlet (41), the air outlet (41) is connected to the regulating chamber (12), the float (21) is arranged in the regulating chamber (12), and the upper end of the air inlet (11) faces the float (21); The regulating device (3) comprises a guide seat (31), and the opening and closing device (2) further comprises a valve stem (23), the upper end of the valve stem (23) is tightly connected to the guide seat (31), and the lower end of the valve stem (23) is provided with a cover cap (22), the cover cap (22) is spherical, the inner cavity of the cover cap (22) is matched with the outer circle of the float (21), the upper side of the cover cap (22) is matched with the bottom side of the valve cover (4), and the guide seat (31) is provided with a plurality of through grooves (312).
3. The composite quick exhaust valve with overpressure protection function according to claim 2, characterized in that: The flow guide assembly (24) comprises a base (241), the base (241) being placed and fastened to the inner wall of the air inlet (11), a plurality of guide vanes (242) being provided circumferentially on the base (241), the guide vanes (242) being arranged in a spiral, and flow gaps being provided between adjacent guide vanes (242).
4. The composite quick exhaust valve with overpressure protection function according to claim 3, characterized in that: The drainage assembly (24) further comprises a transmission cover (243) and a magnet (244); the transmission cover (243) is disposed in the air inlet (11); the transmission cover (243) is located above the base (241); the transmission cover (243) and the air inlet (11) are rotatably connected; the transmission cover (243) is hollowed out; the transmission cover (243) and the floating ball (21) are adapted to each other; and a magnet (244) is provided at a relative position between the cover cap (22) and the transmission cover (243); During transmission: the floating ball (21) and the transmission cover (243) are frictionally driven.
5. The composite quick exhaust valve with overpressure protection function according to claim 3, characterized in that: The plurality of guide vanes (242) are arranged at unequal distances along the central axis of the base (241).
6. The composite quick exhaust valve with overpressure protection function according to claim 4, characterized in that: The guide seat (31) is provided with a plurality of contraction grooves (311), the through grooves (312) are connected to the contraction grooves (311), the contraction grooves (311) are of a two-stage design, the adjustment device (3) further comprises a sensing component (32), the sensing component (32) is connected to the contraction grooves (311), the sensing component (32) comprises a centrifugal block (321) and a fan plate (323), the centrifugal block (321) is slidably connected to the contraction grooves (311), and the centrifugal block (323) is A preload spring (324) is provided on one side of the guide seat (31) close to the centrifugal block (321); one end of the preload spring (324) away from the centrifugal block (321) is tightly connected to the wall of the contraction groove (311); one side of the centrifugal block (321) is drivingly connected to the fan plate (323); two ends of the fan plate (323) are respectively inserted into two sections of the contraction groove (311); the fan plate (323) and the contraction groove (311) are slidably connected; and a flow groove (3231) is provided on the fan plate (323); During fast discharge, the centrifugal block (321) slides toward the outside of the contraction groove (311), and the overlapping area of the flow groove (3231) and the through groove (312) increases.
7. The composite quick exhaust valve with overpressure protection function according to claim 6, characterized in that: The contraction groove (311) is arranged obliquely, and the centrifugal block (321) is located at the lower end of the contraction groove (311).
8. The composite quick exhaust valve with overpressure protection function according to claim 7, characterized in that: A transmission plate (322) is provided on one side of the centrifugal block (321), the centrifugal block (321) and the transmission plate (322) are hingedly connected, and a side of the transmission plate (322) away from the centrifugal block (321) is in surface contact with the fan plate (323).
9. The composite quick exhaust valve with overpressure protection function according to claim 8, characterized in that: The regulating device (3) further comprises a limit plate (33), wherein the limit plate (33) is disposed in the air outlet (41), and the limit plate (33) is located at the lower side of the guide seat (31).