Combined type air inlet and exhaust valve
By designing an exhaust adjustment mechanism for overflow plate, guide tube, throttle plate and elastic parts in the composite inlet and exhaust valve, combined with the precise guidance of the main float, the problem that the float ball is prone to deviate from the exhaust port and causes the fluid to be easily sprayed, and the regulation of gas discharge and stable fluid discharge are achieved.
Patent Information
- Application Number
- CN202421991771.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-08-16
AI Technical Summary
In the composite inlet and exhaust valve, the float ball is prone to deviate from the exhaust port, resulting in fluid being easily sprayed.
A composite intake and exhaust valve is designed, and an exhaust adjustment mechanism composed of an overflow plate, a guide tube, a throttle plate and an elastic member is designed. The main float is accurately guided through the first guide rod and the second guide rod, and the throttle plate can slidably adjust the airflow channel.
Effectively slows down gas discharge, prevents water and other fluids from rapidly hitting the inner wall of the pipeline, reduces the occurrence of exhaust water hammers, improves the guide accuracy of the float, and reduces the float offset.
Smart Images
Figure CN222864314U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of valves, in particular to a composite intake and exhaust valve. Background Art
[0002] The compound intake and exhaust valve is generally installed on the pipeline, which can remove the gas in the pipeline to clear the pipeline, reduce gas resistance and make the pipeline work normally.
[0003] In the related technology, a sealing float is provided inside the valve body of the compound intake and exhaust valve. The airflow area at the exhaust port is mainly adjusted by the sliding connection between the valve plate and the inner wall of the valve body. The gas flows out from one side of the valve plate, and the airflow will be biased. The gas flow rate is prone to large differences. When fluids such as water rise and lift the float to move toward the exhaust port, there is a risk of momentary deviating from the exhaust port, causing a large amount of fluid to be sprayed out. Utility Model Content
[0004] The utility model aims to provide a composite inlet and outlet valve to solve the problem in the related art that a float ball is easy to deviate from an outlet, resulting in fluid being easy to spray out.
[0005] To achieve this purpose, the utility model adopts the following technical solutions:
[0006] The utility model provides a composite intake and exhaust valve, which comprises:
[0007] A valve body, the valve body having an air intake passage, an air cavity and an exhaust passage which are connected in sequence, and a bracket is arranged in the air intake passage;
[0008] An exhaust regulating mechanism, comprising a flow plate, a guide tube, a throttle plate and an elastic member, wherein the flow plate is connected to the valve body, the flow plate has an airflow channel, the airflow channel is connected to the exhaust channel, the guide tube is connected to the flow plate, the throttle plate is arranged in the exhaust channel, and the throttle plate can be slidably mounted on the guide tube, the throttle plate can block part of the airflow channel, the elastic member is arranged between the flow plate and the throttle plate, and the elastic member can apply a force to the throttle plate;
[0009] A main float is arranged in the air cavity, and a first guide rod and a second guide rod are arranged on the main float. The first guide rod is slidably connected to the guide tube, and the second guide rod is slidably connected to the bracket. The main float can selectively block the exhaust passage.
[0010] In one embodiment, the flow plate includes an outer ring plate, an inner ring plate and a plurality of rods, the outer ring plate is arranged along the outer circumference of the inner ring plate, the outer ring plate is detachably connected to the inner wall of the exhaust channel of the valve body, the inner ring plate is connected to the guide pipe, a plurality of rods are connected between the outer ring plate and the inner ring plate, and the plurality of rods are arranged at intervals along the circumference of the inner ring plate, and the airflow channel is formed between adjacent rods.
[0011] In one embodiment, the outer ring plate has a connecting section and an abutting section connected to each other, the radial dimension of the abutting section is larger than the radial dimension of the connecting section to form a pressure shoulder, the outer wall of the connecting section is threadedly connected to the exhaust channel, and the end of the pressure shoulder can abut against the end of the valve body.
[0012] In one embodiment, the guide tube includes a threaded section, a sliding section and a limiting section which are connected in sequence, the flow plate is sleeved on the threaded section and threadedly connected to the threaded section, the tube diameter of the limiting section is larger than the tube diameter of the sliding section, the throttle plate can be slidably sleeved on the sliding section, and the throttle plate can slide between the limiting section and the flow plate.
[0013] In one of the embodiments, the tube diameter of the sliding section is larger than the tube diameter of the threaded section, and a limiting shoulder can be formed at one end of the sliding section close to the threaded section. The exhaust regulating mechanism also includes a nut, which is threadedly connected to the threaded section, and the nut and the limiting shoulder abut against both sides of the flow plate.
[0014] In one embodiment, the valve body includes a base, a cover body and a protective cover, the air cavity and the air inlet channel are arranged in the base, the cover body and the base are detachably connected, an annular cylinder is arranged on the cover body, the exhaust channel runs through the cover body and the annular cylinder, the protective cover is arranged on the outside of the annular cylinder, and the protective cover is connected to the cover body, and a plurality of exhaust holes are arranged on the circumferential side of the protective cover.
[0015] In one of the embodiments, a flange is provided on the inner wall of the cover body, the flange is located at the end of the exhaust channel close to the main float, the flange is extended toward the inner cavity of the exhaust channel, a sealing gasket and a sealing pressure plate are provided below the flange, the sealing gasket is clamped between the flange and the sealing pressure plate, and the sealing pressure plate is detachably connected to the cover body.
[0016] In one embodiment, the compound inlet and exhaust valve also includes a trace exhaust valve, the air inlet of the trace exhaust valve can be selectively connected to the air cavity, the air outlet of the trace exhaust valve is used to communicate with the external space, the trace exhaust valve is connected to the cover body, and the protective cover is arranged on the outside of the trace exhaust valve and the annular cylinder.
[0017] In one of the embodiments, the compound intake and exhaust valve also includes a filter element, which is arranged in the intake channel. A connecting ring is provided at the bottom of the filter element, and the connecting ring is detachably connected to the inner wall of the intake channel. A mounting hole is provided at the top of the filter element, and the mounting hole is used to install the second guide rod.
[0018] In one embodiment, a buffer pad is provided on the bracket, and the buffer pad includes a supporting portion and a mounting portion that are connected to each other. The mounting portion is provided in the bracket and the mounting hole, and the mounting portion can be clamped between the hole wall of the mounting hole and the second guide rod. The supporting portion is provided at the top of the bracket, and the supporting portion can be clamped between the top of the bracket and the main float.
[0019] The beneficial effects of the utility model are:
[0020] The utility model provides a composite inlet and outlet valve, which can be arranged on a pipeline and used when the pipeline is filled with water. During the initial exhaust, the gas pressure is low, the extrusion force applied by the gas pressure to the throttle plate is less than the elastic force applied by the elastic member to the throttle plate, the throttle plate is at the bottom of the guide pipe, that is, the throttle plate is at a position far away from the flow plate, the gas entering the air flow channel from the exhaust channel is less affected by the throttle plate, and all parts of the exhaust channel can be equivalent to the nominal diameter, and the air flow is smooth. When the exhaust pressure reaches the preset pressure, the extrusion force applied by the gas pressure to the throttle plate is equal to or greater than the elastic force applied by the elastic member to the throttle plate, the throttle plate can overcome the elastic force of the elastic member and slide upward along the guide pipe under the action of the gas pressure, the throttle plate gradually approaches the flow plate or abuts against the flow plate to block part of the exhaust area of the air flow channel of the flow plate, slow down the exhaust of the gas, compress the gas retained in the pipeline to buffer the impact of water on the pipeline, and avoid the exhaust water hammer caused by the rapid impact of water and other fluids on the inner wall of the pipeline due to excessive exhaust. When water enters the air cavity or the gas pressure is too high, the main float can move toward the exhaust channel and block the exhaust channel. The exhaust process ends, and the first guide rod is slidably connected to the guide tube, which can guide the main float while reducing the obstruction of the airflow between the exhaust channel and the throttle plate. The second guide rod is slidably connected to the bracket, and can be erected and supported by the bracket to reduce the obstruction of the air intake channel, so that the center of the main float can be located on the extended axis of the first guide rod and the second guide rod, with high guiding accuracy and reduced displacement of the float. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a structural schematic diagram of the initial low-pressure exhaust state of the compound intake and exhaust valve in the embodiment of the utility model;
[0022] Figure 2 It is a structural schematic diagram of the high-pressure limited exhaust state of the compound intake and exhaust valve in the embodiment of the utility model;
[0023] Figure 3 It is a structural schematic diagram of the exhaust passage of the compound intake and exhaust valve in the embodiment of the utility model in a closed state;
[0024] Figure 4 This is a schematic diagram of the structure of the flow plate in the embodiment of the utility model;
[0025] Figure 5 It is a cross-sectional schematic diagram of the protective cover in the embodiment of the utility model.
[0026] In the figure:
[0027] 1. Valve body;
[0028] 11. air inlet passage; 12. air cavity; 13. exhaust passage; 14. bracket;
[0029] 15. Base; 16. Cover; 17. Protective cover; 171. Exhaust hole; 172. Annular plate; 173. Top cover; 174. Fixing screw; 175. Annular groove;
[0030] 18. annular cylinder; 19. flange;
[0031] 2. Exhaust adjustment mechanism;
[0032] 21, flow plate; 211, air flow channel; 212, outer ring plate; 2121, connecting section; 2122, abutting section; 2123, abutting shoulder; 213, inner ring plate; 214, rod;
[0033] 22, guide tube; 221, threaded section; 222, sliding section; 223, limiting section;
[0034] 23. Throttle plate; 24. Elastic member; 25. Nut;
[0035] 3. Main float; 31. First guide rod; 32. Second guide rod;
[0036] 4. Sealing pad; 5. Sealing pressure plate; 6. Micro exhaust valve;
[0037] 7. Buffer pad; 71. Supporting part; 72. Mounting part;
[0038] 8. filter element; 81. connecting ring; 82. mounting hole. DETAILED DESCRIPTION
[0039] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.
[0040] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0041] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0042] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.
[0043] like Figures 1 to 3 The embodiment of the utility model provides a composite intake and exhaust valve, which comprises a valve body 1, an exhaust regulating mechanism 2 and a main float 3. The valve body 1 has an intake passage 11, an air cavity 12 and an exhaust passage 13 which are connected in sequence. A bracket 14 is arranged in the intake passage 11. The bracket 14 can reduce the entry of foreign impurities into the exhaust passage 13 and the air cavity 12, thereby improving the cleanliness of the intake air.
[0044] The exhaust regulating mechanism 2 includes a flow plate 21, a guide tube 22, a throttle plate 23 and an elastic member 24. The flow plate 21 is connected to the valve body 1. The flow plate 21 has an airflow channel 211. The airflow channel 211 is connected to the exhaust channel 13, that is, the flow plate 21 can be arranged in the exhaust channel 13 or at the outlet position of the exhaust channel 13. The elastic member 24 can be, but is not limited to, a spring. The guide tube 22 is connected to the flow plate 21. The flow plate 21 can support the guide tube 22. The throttle plate 23 is arranged in the exhaust channel 13, and the throttle plate 23 can be slidably mounted on the guide tube 22. The throttle plate 23 can block part of the airflow channel 211, that is, the throttle plate 23 can move closer to or away from the flow plate 21 by sliding along the guide tube 22, thereby adjusting the amount of conveying air between the exhaust channel 13 and the airflow channel 211. The elastic member 24 is disposed between the flow plate 21 and the throttle plate 23 . The elastic member 24 can exert a force on the throttle plate 23 so as to push the throttle plate 23 away from the flow plate 21 when the gas pressure decreases.
[0045] The main float 3 is arranged in the air cavity 12, and the throttle plate 23 is arranged on the side of the flow plate 21 close to the main float 3. The main float 3 is provided with a first guide rod 31 and a second guide rod 32. The first guide rod 31 is slidably connected to the guide tube 22, and the second guide rod 32 is slidably connected to the bracket 14. The main float 3 can selectively block the exhaust passage 13. The first guide rod 31 and the second guide rod 32 can perform bidirectional guidance on the upper and lower sides of the main float 3, so that the main float 3 performs directional reciprocating motion in the vertical direction, reducing the deviation of the movement direction, and the blocking action of the exhaust passage 13 is more accurate.
[0046] With such arrangement, the composite air intake and exhaust valve can be arranged on the pipeline and used when the pipeline is filled with water. During the initial exhaust, the gas pressure is low, and the extrusion force exerted by the gas pressure on the throttle plate 23 is smaller than the elastic force exerted by the elastic member 24 on the throttle plate 23. The throttle plate 23 is at the lowermost end of the guide tube 22, that is, the throttle plate 23 is at a position far away from the flow plate 21. The gas entering the air flow channel 211 from the exhaust channel 13 is less affected by the throttle plate 23, and all parts of the exhaust channel 13 can be equivalent to the nominal diameter, and the air flow is smooth. When the exhaust pressure reaches the preset pressure, the extrusion force applied by the gas pressure on the throttle plate 23 is equal to or greater than the elastic force applied by the elastic member 24 on the throttle plate 23. The throttle plate 23 can overcome the elastic force of the elastic member 24 under the action of the gas pressure and slide upward along the guide tube 22. The throttle plate 23 gradually approaches the flow plate 21 or abuts against the flow plate 21 to block part of the exhaust area of the air flow channel 211 of the flow plate 21, slowing down the discharge of gas, compressing the gas retained in the pipeline to buffer the impact of water on the pipeline, and avoiding the exhaust water hammer caused by the rapid impact of water and other fluids on the inner wall of the pipeline due to excessive exhaust. When water enters the air cavity 12 or the gas pressure is too high, the main float 3 can move toward the exhaust channel 13 and block the exhaust channel 13, and the exhaust process ends. The first guide rod 31 is slidably connected to the guide tube 22, which can guide the main float 3 while reducing the obstruction of the air flow between the exhaust channel 13 and the throttle plate 23. The second guide rod 32 is slidably connected to the bracket 14 and can be supported by the bracket 14 to reduce obstruction of the air inlet passage 11, so that the center of the main float 3 can be located on the extended line of the axis of the first guide rod 31 and the second guide rod 32. The guiding accuracy is high, and the relative offset between the main float 3 and the exhaust passage 13 is reduced, which solves the problem in the related art that the float is easy to deviate from the exhaust port, causing the fluid to be easily sprayed out.
[0047] like Figures 1 to 4As shown, in some embodiments, the flow plate 21 includes an outer ring plate 212, an inner ring plate 213 and a plurality of rods 214, the outer ring plate 212 is circumferentially arranged along the outer side of the inner ring plate 213, and the outer ring plate 212 is detachably connected to the inner wall of the exhaust channel 13 of the valve body 1, and the connection can be but is not limited to a threaded connection, a snap-on connection or a magnetic connection, which is convenient for maintenance or replacement with a different flow area. The inner ring plate 213 is connected to the guide tube 22, and multiple rods 214 are connected between the outer ring plate 212 and the inner ring plate 213, and multiple rods 214 are arranged at intervals along the circumference of the inner ring plate 213, and an air flow channel 211 is formed between adjacent rods 214. In this way, the outer ring plate 212 is connected to the valve body 1, and the valve body 1 can be used as a mounting support. The inner ring plate 213 is mounted in the inner circle of the outer ring plate 212 through multiple rods 214, and the inner ring plate 213 can support the guide tube 22, so that the throttle plate 23 can be suspended and mounted on the central axis of the exhaust channel 13. In the process of the throttle plate 23 approaching or moving away from the flow plate 21, the gas can flow from the throttle plate 23 in the circumferential direction, and the air flow is evenly distributed, thereby reducing the offset force on the main float 3.
[0048] In this embodiment, the radial dimension of the throttle plate 23 is smaller than the radial dimension of the inner wall of the outer ring plate 212, and the radial dimension of the throttle plate 23 is larger than the radial dimension of the outer wall of the inner ring plate 213. When the throttle plate 23 abuts against the flow plate 21, the shielding area of the airflow channel 211 by the throttle plate 23 accounts for two-fifths to four-fifths of the total flow cross-sectional area of the airflow channel 211, which can ensure the throttling effect and keep the airflow smooth when the throttle plate 23 is away from the flow plate 21. Among them, the side wall of the throttle plate 3 can be provided with a chamfer, which can be designed as an inclined surface or a curved surface to reduce the resistance to the airflow.
[0049] In some embodiments, the outer ring plate 212 has a connecting section 2121 and an abutting section 2122 that are connected to each other. The radial dimension of the abutting section 2122 is larger than the radial dimension of the connecting section 2121 to form a pressure shoulder 2123. The outer wall of the connecting section 2121 is threadedly connected to the exhaust channel 13, and the end of the pressure shoulder 2123 can abut against the end of the valve body 1. With this arrangement, the outer ring plate 212 can be threadedly connected to the end position of the exhaust channel 13 at the air outlet end, the connecting section 2121 can be sealed and fixed to the inner wall of the valve body 1 at the exhaust channel 13 position through threads, and the abutting section 2122 can abut against the end of the valve body 1 to limit the installation position of the guide tube 22 and the throttle plate 23.
[0050] Furthermore, a first groove is provided on the inner ring plate 213, and a second groove is provided on the throttle plate 23. One end of the elastic member 24 is clamped with the first groove, and the other end is clamped with the second groove. The first groove and the second groove can provide a holding space for the elastic member 24. The throttle plate 23 can be squeezed to abut against the surface of the flow plate 21 under the action of gas pressure. At this time, the elastic member 24 can be pressed into the first groove and the second groove, so that the throttle plate 23 can block the air flow channel 211 of the flow plate 21 more accurately and reduce the shaking of the throttle plate 23. In addition, the ball center of the main float 3, the axis of the first guide rod 31 and the axis of the second guide rod 32 can be arranged in a colinear manner, and the first guide rod 31 and the second guide rod 32 have high guiding accuracy for the main float 3.
[0051] like Figures 1 to 3 As shown, in some embodiments, the guide tube 22 includes a threaded section 221, a sliding section 222 and a limiting section 223 which are connected in sequence, and the flow plate 21 is sleeved on the threaded section 221 and is threadedly connected to the threaded section 221, that is, the threaded section 221 is fixedly connected to the flow plate 21 through threads. The diameter of the limiting section 223 is larger than the diameter of the sliding section 222, and the limiting section 223 can limit the flow plate 21 to prevent the flow plate 21 from falling out. The throttle plate 23 can be slidably sleeved on the sliding section 222, and the throttle plate 23 can slide between the limiting section 223 and the flow plate 21, so that the limiting section 223 and the flow plate 21 can limit the upper and lower limit positions of the throttle plate 23 to prevent the throttle plate 23 from moving excessively.
[0052] Furthermore, the tube diameter of the sliding section 222 is larger than the tube diameter of the threaded section 221, and a limiting shoulder can be formed at one end of the sliding section 222 close to the threaded section 221. The exhaust regulating mechanism 2 also includes a nut 25, which is threadedly connected to the threaded section 221, and the nut 25 and the limiting shoulder abut against both sides of the flow plate 21. The upper end of the guide tube 22 passes through the flow plate 21 and is connected to the nut 25. The limiting shoulder connects and limits the guide tube 22. The guide plate is doubly limited on both sides of the flow plate 21 by the nut 25 and the limiting shoulder, which greatly reduces the relative movement and shaking of the guide tube 22 and the flow plate 21, making the movement of the throttle plate 23 more accurate and the adjustment of the airflow more accurate and efficient.
[0053] like Figures 1 to 3 as well as Figure 5As shown, in some embodiments, the valve body 1 includes a base 15, a cover 16 and a protective cover 17, the air cavity 12 and the air inlet channel 11 are arranged in the base 15, and the cover 16 is detachably connected to the base 15, and the connection method thereof can be but not limited to bolt connection, clamping or magnetic connection. An annular cylinder 18 is arranged on the cover 16, and the exhaust channel 13 runs through the cover 16 and the annular cylinder 18. The annular cylinder 18 can increase the length of the exhaust channel 13 and guide the gas of the exhaust channel 13 upward. The protective cover 17 is arranged on the outside of the annular cylinder 18, and the protective cover 17 is connected to the cover 16. A plurality of exhaust holes 171 are arranged on the circumferential side of the protective cover 17, that is, the protective cover 17 is arranged at the outlet of the annular cylinder 18, and the gas flowing out of the exhaust channel 13 can be guided to the circumference of the annular cylinder 18 and the gas can be discharged laterally from the plurality of exhaust holes 171. If there is still liquid when the gas is discharged, the protective cover 17 can block the liquid to reduce the liquid discharge. The protective cover 17 can not only reduce the discharge of exhaust liquid, but also protect the cover body 16 and the annular cylinder 18 to reduce the entry of foreign impurities into the exhaust passage 13 .
[0054] In this embodiment, the protective cover 17 can be an integrally formed shell-like structure with an opening at the lower end, and the bottom wall or the top of the shell-like structure can be connected to the cover body 16 by bolt connection or clamping. Alternatively, the protective cover 17 can include a split-designed annular plate 172 and a top cover 173, the top cover 173 is arranged above the cover body 16, the annular plate 172 is clamped between the top cover 173 and the cover body 16 and the top cover 173 is separated from the cover body 16 to facilitate gas circulation, the annular plate 172 is arranged around the outer circumference of the annular cylinder 18, and the top cover 173 is connected to the annular cylinder 18 by one or more fixing screws 174 to clamp and fix the annular plate 172. Among them, an annular groove 175 is provided on the top cover 173 and the cover body 16, and the annular groove 175 is used for the end of the annular plate 172 to extend into, so as to facilitate the installation and positioning of the annular plate 172 and reduce the shaking and displacement of the annular plate 172. In addition, the protective cover 17 may be provided with a lifting ear, and the lifting ear and the protective cover 17 may be detachably connected by means of threads or snap-fitting.
[0055] Furthermore, a flange 19 is provided on the inner wall of the cover body 16. The flange 19 is located at the end of the exhaust passage 13 close to the main float 3. The flange 19 is extended toward the inner cavity of the exhaust passage 13, which can reduce the size of the air inlet of the exhaust passage 13 and facilitate the cooperation with the main float 3. A sealing gasket 4 and a sealing pressure plate 5 are provided below the flange 19. The sealing gasket 4 is clamped between the flange 19 and the sealing pressure plate 5. The sealing pressure plate 5 is detachably connected to the cover body 16. The connection can be, but not limited to, bolt connection or clamping. The sealing pressure plate 5 can clamp and fix the sealing gasket 4 below the flange 19. When the main float 3 rises, the surface of the main float 3 can abut against the surface of the sealing gasket 4, forming an elastic abutment, thereby improving the sealing performance of the main float 3 when blocking the exhaust passage 13.
[0056] In this embodiment, the sealing pad 4 can be made of elastic materials such as rubber or silicone to improve the sealing performance.
[0057] Furthermore, the composite air inlet and outlet valve also includes a trace exhaust valve 6, the air inlet of the trace exhaust valve 6 can be selectively connected to the air cavity 12, the air outlet of the trace exhaust valve 6 is used to communicate with the external space, the trace exhaust valve 6 is connected to the cover body 16, and the protective cover 17 is covered on the outside of the trace exhaust valve 6 and the annular cylinder 18, the trace exhaust valve 6 can conduct a trace amount of gas in the air cavity 12 to the external space, and the protective cover 17 can also cover the trace exhaust valve 6 for protection.
[0058] like Figures 1 to 3 As shown, in some embodiments, the composite intake and exhaust valve further includes a filter 8, which is disposed in the intake passage 11. A connecting ring 81 is disposed at the bottom of the filter 8, and the connecting ring 81 is detachably connected to the inner wall of the intake passage 11, and the connection may be, but is not limited to, a snap-on or threaded connection. A mounting hole 82 is disposed at the top of the filter 8, and the mounting hole 82 is used to mount the second guide rod 32, that is, the mounting hole 82 can be inserted into the second guide rod 32, and the second guide rod 32 can slide relative to the mounting hole 82. The side wall of the filter 8 is provided with a plurality of filter holes to reduce the entry of impurities from the external space.
[0059] In this embodiment, the filter element 8 is configured as a truncated cone-shaped shell. By designing the filter element 8 as a truncated cone-shaped shell, not only can the second guide rod 32 be centrally mounted, but also the filter element 8 can have a larger filtering area. A connecting ring 81 is provided on the large end of the truncated cone-shaped shell, and a mounting hole 82 is provided on the small end of the truncated cone-shaped shell. In the air intake direction of the air intake channel 11, the large end of the truncated cone-shaped shell is located upstream of the small end of the truncated cone-shaped shell, that is, the large end of the truncated cone-shaped shell is at the bottom and the small end is at the top. The conical surface of the truncated cone-shaped shell facilitates the gathering and filtering of the intake gas.
[0060] like Figures 1 to 3As shown, in some embodiments, a buffer pad 7 is provided on the bracket 14, and the buffer pad 7 includes a supporting portion 71 and a mounting portion 72 connected to each other. The mounting portion 72 is provided in the mounting hole 82, and the mounting portion 72 can be clamped between the hole wall of the mounting hole 82 and the second guide rod 32, so that the second guide rod 32 and the hole wall of the mounting hole 82 can be elastically abutted to reduce rigid wear. The supporting portion 71 is provided at the top of the bracket 14, and the supporting portion 71 can be clamped between the top of the bracket 14 and the main float 3, and the supporting portion 71 can elastically buffer and damp the surface of the main float 3 and the top of the bracket 14, so as to reduce rigid collision and deformation between the two.
[0061] In this embodiment, the buffer pad 7 can be made of elastic materials such as rubber or silicone to improve the buffering and shock absorbing effect.
[0062] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.
Claims
1. A composite intake and exhaust valve, characterized in that: include: A valve body (1), the valve body (1) comprising an air intake passage (11), an air cavity (12) and an air exhaust passage (13) which are connected in sequence, and a bracket (14) is arranged in the air intake passage (11); An exhaust regulating mechanism (2) comprises a flow plate (21), a guide tube (22), a throttle plate (23) and an elastic member (24), wherein the flow plate (21) is connected to the valve body (1), the flow plate (21) has an air flow channel (211), the air flow channel (211) is connected to the exhaust channel (13), the guide tube (22) is connected to the flow plate (21), the throttle plate (23) is arranged in the exhaust channel (13), and the throttle plate (23) can be slidably mounted on the guide tube (22), the throttle plate (23) can block part of the air flow channel (211), the elastic member (24) is arranged between the flow plate (21) and the throttle plate (23), and the elastic member (24) can exert a force on the throttle plate (23); A main float (3), the main float (3) is arranged in the air cavity (12), and a first guide rod (31) and a second guide rod (32) are arranged on the main float (3), the first guide rod (31) is slidably connected to the guide tube (22), and the second guide rod (32) is slidably connected to the bracket (14), and the main float (3) can selectively block the exhaust passage (13).
2. The compound intake and exhaust valve according to claim 1, characterized in that: The flow plate (21) comprises an outer ring plate (212), an inner ring plate (213) and a plurality of rods (214); the outer ring plate (212) is arranged along the outer circumference of the inner ring plate (213); the outer ring plate (212) is detachably connected to the inner wall of the exhaust passage (13) of the valve body (1); the inner ring plate (213) is connected to the guide pipe (22); a plurality of rods (214) are connected between the outer ring plate (212) and the inner ring plate (213); and the plurality of rods (214) are arranged at intervals along the circumference of the inner ring plate (213); and the air flow passage (211) is formed between adjacent rods (214).
3. The compound intake and exhaust valve according to claim 2, characterized in that: The outer ring plate (212) comprises a connecting section (2121) and an abutting section (2122) which are connected to each other. The radial dimension of the abutting section (2122) is larger than the radial dimension of the connecting section (2121) so as to form a pressure shoulder (2123). The outer wall of the connecting section (2121) is threadedly connected to the exhaust passage (13), and the end of the pressure shoulder (2123) can abut against the end of the valve body (1).
4. The compound intake and exhaust valve according to claim 1, characterized in that: The guide tube (22) comprises a threaded section (221), a sliding section (222) and a limiting section (223) which are connected in sequence; the flow plate (21) is sleeved on the threaded section (221) and threadedly connected to the threaded section (221); the tube diameter of the limiting section (223) is larger than the tube diameter of the sliding section (222); the throttle plate (23) can be slidably sleeved on the sliding section (222), and the throttle plate (23) can slide between the limiting section (223) and the flow plate (21).
5. The compound intake and exhaust valve according to claim 4, characterized in that: The diameter of the sliding section (222) is larger than the diameter of the threaded section (221); one end of the sliding section (222) close to the threaded section (221) can form a limiting shoulder; the exhaust regulating mechanism (2) further comprises a nut (25); the nut (25) is threadedly connected to the threaded section (221); and the nut (25) and the limiting shoulder abut against two sides of the flow plate (21).
6. The compound intake and exhaust valve according to claim 1, characterized in that: The valve body (1) comprises a base (15), a cover (16) and a protective cover (17); the air cavity (12) and the air inlet passage (11) are arranged in the base (15); the cover (16) and the base (15) are detachably connected; an annular cylinder (18) is arranged on the cover (16); the exhaust passage (13) passes through the cover (16) and the annular cylinder (18); the protective cover (17) is arranged on the outside of the annular cylinder (18), and the protective cover (17) is connected to the cover (16); and a plurality of exhaust holes (171) are arranged on the circumferential side of the protective cover (17).
7. The compound intake and exhaust valve according to claim 6, characterized in that: A flange (19) is provided on the inner wall of the cover body (16), and the flange (19) is located at the end of the exhaust channel (13) close to the main float (3). The flange (19) is extended toward the inner cavity of the exhaust channel (13). A sealing gasket (4) and a sealing pressure plate (5) are provided below the flange (19). The sealing gasket (4) is clamped between the flange (19) and the sealing pressure plate (5), and the sealing pressure plate (5) is detachably connected to the cover body (16).
8. The compound intake and exhaust valve according to claim 6, characterized in that: The composite air intake and exhaust valve further comprises a trace exhaust valve (6), the air intake of the trace exhaust valve (6) can be selectively communicated with the air cavity (12), the air outlet of the trace exhaust valve (6) is used to communicate with the external space, the trace exhaust valve (6) is connected to the cover body (16), and the protective cover (17) is arranged on the outside of the trace exhaust valve (6) and the annular cylinder (18).
9. The compound intake and exhaust valve according to claim 1, characterized in that: The composite intake and exhaust valve further comprises a filter element (8), wherein the filter element (8) is arranged in the intake passage (11), a connecting ring (81) is arranged at the bottom of the filter element (8), and the connecting ring (81) is detachably connected to the inner wall of the intake passage (11), and a mounting hole (82) is arranged at the top of the filter element (8), and the mounting hole (82) is used to mount the second guide rod (32).
10. The compound intake and exhaust valve according to claim 9, characterized in that: The bracket (14) is provided with a buffer pad (7), and the buffer pad (7) comprises a supporting portion (71) and a mounting portion (72) connected to each other. The mounting portion (72) is arranged in the bracket (14) and the mounting hole (82), and the mounting portion (72) can be clamped between the hole wall of the mounting hole (82) and the second guide rod (32). The supporting portion (71) is arranged at the top of the bracket (14), and the supporting portion (71) can be clamped between the top of the bracket (14) and the main float (3).