Multifunctional airflow valve

Abstract

The utility model discloses a multifunctional airflow valve, which comprises a valve core and a valve body, the valve body is movably sleeved outside the valve core in a sealing way and has a function of replacing the valve relative to the position of the valve core, two axial air cavities which are axially arranged in a blocking way are arranged inside the valve core, and two groups of radial flow guide holes which are communicated with the axial air cavities are arranged on the valve core. The two axial air cavities and the two sets of radial flow guide holes form two sets of airflow channels, and a communication cavity for achieving communication and blocking of the two sets of airflow channels or circulation of a single set of airflow channels is formed in the valve body. The multifunctional airflow valve is simple in structure, convenient to operate, capable of achieving multiple functions of inflating, deflating, pressure stabilizing and maintaining stopping and the like at the same time, capable of guaranteeing the accuracy of inflating pressure, wide in application range and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a multifunctional air flow valve. Background Art

[0002] In the prior art, some valves used for inflating and deflation of inflatable and deflated gas objects such as tires only have the function of inflating, some have the function of deflation, and some have both the functions of inflating and deflation. However, the existing valves directly disconnect from the inflatable object after the inflation is completed. This operation will cause the gas inside the inflatable object to be disconnected from the valve and there will be a certain amount of overflow. For inflatable objects with low precision requirements, a small amount of overflow can be ignored, but for inflatable objects with high inflation pressure precision requirements, it will affect the use of the object. At the same time, the existing valves have problems such as complex structure and inconvenient operation.

[0003] A Chinese patent document (announcement date: 2007-12-12, announcement number: CN 200989485Y) discloses a quick inflation valve for motor vehicle tires. Its main features are: the inflation valve has an inflation tube with a thread on one end that matches the automobile tire inflation nozzle and a sealing stopper on the other end, a valve core key for disassembling and assembling the tire valve core and extending out of the inflation tube is installed in the tube, and an air belt joint that is easy to disassemble and assemble is installed on the outer cylindrical surface of the inflation tube perpendicular to its axis. When using the inflation valve, whether it is to inflate a single tire or a double tire, there is no need to disassemble the tire. In addition, the valve core key does not need to be pulled out during the entire inflation process, and the valve core can be disassembled and assembled under pressure, which can not only save time and improve efficiency, but also does not cause air pressure loss. Compared with the prior art, the inflation valve has the advantages of simple structure, less consumables, low cost, easy use, high inflation efficiency, etc., and can be applied to inflation operations of various motor vehicle tires. This technical solution only has an inflation function and a relatively complex structure. Utility Model Content

[0004] The purpose of the utility model is to solve the problems of the existing inflation and deflation valves having single functions, air overflow during the inflation process, inaccurate inflation pressure, inconvenient operation, etc., and to provide a multifunctional airflow valve that can simultaneously realize multiple functions such as inflation, deflation, stopping pressure stabilization and maintaining pressure, and can ensure accurate inflation pressure.

[0005] The technical solution adopted by the utility model to achieve the purpose of the invention is: a multifunctional air flow valve, including a valve core and a movable sealing sleeve arranged outside the valve core and a valve body that moves relative to the valve core to change the valve function, the valve core is provided with two axial air cavities with axial blocking arrangements, the valve core is provided with two groups of radial guide holes connected to the axial air cavities, the two axial air cavities and the two groups of radial guide holes form two groups of air flow channels, and the valve body is provided with a connecting cavity that realizes the connection, blocking or circulation of the two groups of air flow channels or the single group of air flow channels. The multifunctional airflow valve can realize different functions such as inflation, stopping, and deflation through the relative movement between the valve core and the valve body. Two axially non-connected axial air cavities are arranged inside the two ends of the valve core. The two axial air cavities can respectively connect the inflation device and the object to be inflated. At the same time, two groups of radial guide holes are arranged on the valve core, and each group of radial guide holes is respectively connected to one of the axial air cavities, thereby forming two groups of airflow channels, and a connecting cavity is arranged inside the valve body. The sliding or rotating valve body can realize the connection, isolation, or circulation of the two groups of airflow channels through the connecting cavity, realize the inflation process of the object to be inflated through the inflation device, stop the inflation and stabilize the pressure process, and can also realize the circulation through the unilateral airflow channel to realize the deflation of the gas inside the inflatable object. The multifunctional airflow valve has a simple structure, is easy to operate, and can simultaneously realize multiple functions such as inflation, deflation, stop stabilizing and maintaining pressure, can ensure the accuracy of the inflation pressure, has a wide range of applications, and is highly practical.

[0006] Preferably, the two groups of radial flow guide holes are arranged in the same straight line or staggered in the axial direction of the valve core. The two groups of radial flow guide holes can be arranged in the same straight line or staggered in the axial direction, and can form an air flow channel with the axial air cavity.

[0007] Preferably, the two axial air cavities are blocked by a barrier inside the valve core, and the ends of the two axial air cavities pass through the two ends of the valve core respectively. The two axial air cavities are not connected to each other in the axial direction, but are separated by the barrier. The barrier and the valve core are an integrated structure, and such a structure is easy to process.

[0008] Preferably, at least one radial flow guide hole is provided for each group, and two groups of radial flow guide holes are respectively provided on the circumference of the valve core at one end of the two axial air cavities close to the barrier body. At least one radial flow guide hole is provided for each group to facilitate the formation of an air flow channel, and two groups of axial flow guide holes are arranged adjacent to each other and close to the barrier body, so that the two groups of air flow channels can be connected or stopped by moving the valve body and through the connecting cavity, or one group of radial flow guide holes can be made to communicate with the atmosphere, thereby realizing the deflation operation.

[0009] Preferably, a sliding cavity is provided inside the valve body, and two groups of the connecting cavities are provided, and sliding seals are provided on the sliding cavities on both sides of the two groups of connecting cavities. The connecting cavity is provided with two groups for realizing the connection, isolation or connection of the single-side airflow channel through the two airflows by moving the valve body, and sliding seals are provided on both sides of the connecting cavity to realize the sealing connection with the valve core.

[0010] Preferably, the cavity length of one of the two groups of connecting cavities at least covers the two groups of radial guide holes at the same time; the spacing between the two groups of connecting cavities covers the two groups of radial guide holes respectively. In order to achieve the connection between the two groups of airflow channels, the axial length of one group of connecting cavities can at least cover the two groups of radial guide holes. In order to achieve the function of stopping inflation or deflation to perform pressure stabilization and pressure maintenance operations, the two airflow channels need to be separated and the two airflow channels are not connected to the outside, so the spacing between the two groups of connecting cavities can be set so that at least each connecting cavity just covers one group of radial guide holes, that is, the two groups of radial guide holes are covered by different connecting cavities, thereby achieving the stop connection operation between the two airflow channels.

[0011] Preferably, the two ends of the valve core are respectively provided with an operation connection structure and an inflation connection structure, which are provided to facilitate connection with the object to be inflated and the inflation device.

[0012] Preferably, a hexagonal structure is provided on the outer circumference of one end of the valve core, a positioning groove is provided on the outer circumference of the other end, and a stop groove is provided on the outer circumference of the valve core outside the positioning groove. The hexagonal structure is provided on the valve core for the convenience of valve operation and for positioning the valve body in the connected inflated state. That is to say, when the valve body is in abutment with the hexagonal structure, the two air flow channels are connected and the inflation operation can be performed. The positioning groove is provided on the valve core for the convenience of positioning the valve in the stopped state. That is to say, when the positioning member is inside the positioning groove, it means that the valve is in the stopped state and neither inflation nor deflation can be achieved. The stop groove is provided for the prevention of the separation of the valve body and the valve core and for positioning the valve body in the deflated state. That is to say, when one end of the valve body abuts against the positioning member, it means that the deflation operation of the inflatable object or inflatable device connected to the atmosphere can be achieved.

[0013] Preferably, a stop ring for axial positioning and limiting the valve body is arranged inside the stop groove.

[0014] Preferably, the valve body is provided with a positioning member in cooperation with the positioning groove, and the positioning member is movably arranged on the inner wall of the valve body. The positioning member is slidably arranged on the inner wall of the sliding cavity, and when the valve body moves, the positioning member moves accordingly, and when it moves to the positioning groove, the positioning member cooperates with the positioning groove to achieve positioning.

[0015] The beneficial effects of the utility model are as follows: the multifunctional airflow valve has a simple structure, is easy to operate, and can simultaneously realize multiple functions such as inflation, deflation, stopping pressure stabilization and maintaining pressure, can ensure the accuracy of inflation pressure, has a wide range of applications, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG. 1 is a schematic structural diagram of the multifunctional air flow valve of the present utility model.

[0017] Figure 2 It is a schematic diagram of the exploded structure of the multifunctional air flow valve of the utility model.

[0018] Figure 3 It is a cross-sectional view of the valve core in the utility model.

[0019] Figure 4 yes Figure 3 Left side view of the middle valve core.

[0020] Figure 5 yes Figure 3 Right side view of the middle valve core.

[0021] Figure 6 It is a cross-sectional view of the valve body of the utility model.

[0022] Figure 7 It is a structural schematic diagram of the utility model multifunctional air flow valve in an inflated state.

[0023] Figure 8 yes Figure 7 A cross-sectional view of a multifunctional air flow valve.

[0024] Fig. 9 It is a structural schematic diagram of the utility model multifunctional air flow valve in a stopped state.

[0025] Fig.10 yes Fig. 9 A cross-sectional view of a multifunctional air flow valve.

[0026] Fig.11 The utility model is a structural schematic diagram of the multifunctional air flow valve in the deflated state.

[0027] Fig.12 yes Fig.11 A cross-sectional view of a multifunctional air flow valve.

[0028] Fig.13 It is a structural schematic diagram of the valve core in Example 2.

[0029] Fig.14 yes Fig.13 Right side view of the middle valve core.

[0030] In the figure: 1, valve core, 11, inflation connection end, 12, operating body connection end, 13, operating connection structure, 14, inflation connection structure, 15, hexagonal structure, 16, positioning groove, 17, stop groove;

[0031] 2. valve body, 21. sliding cavity, 24. sealing groove, 25. sliding sealing member, 26. positioning member;

[0032] 3. Axial air cavity, 31. First air cavity, 32. Second air cavity, 33. Barrier,

[0033] 4. First air flow channel, 5. Second air flow channel, 6. Stop ring,

[0034] 7, radial guide hole, 71, first guide hole, 72, second guide hole;

[0035] 8. Connecting cavity, 81. First connecting cavity, 82. Second connecting cavity. DETAILED DESCRIPTION

[0036] The technical solution of the utility model is further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0037] Embodiment 1:

[0038] In Figure 1, Figure 2 In the illustrated embodiment, a multifunctional air flow valve comprises a valve core 1 and a valve body 2 which is arranged on the outside of the valve core 1 and moves relative to the valve core 1 to change the valve function. The valve core 1 is provided with two axial air cavities 3 with axial blocking arrangements. The valve core 1 is provided with two groups of radial guide holes 7 which are connected to the axial air cavities 3. The two axial air cavities 3 and the two groups of radial guide holes 7 form two groups of air flow channels. The valve body 2 is provided with a connecting cavity 8 which is used to connect, block or circulate the two groups of air flow channels.

[0039] The valve body 2 can slide or rotate axially on the valve core 1 to change the valve function.

[0040] The valve core 1 is integrally provided with an inflation connection end 11 connected to the inflation device and an operating body connection end 12 connected to the operating body to be inflated or deflated. An operating connection structure 13 is provided on the operating body connection end 12. In this embodiment, the connection structure adopts an external thread. An inflation connection structure 14 is provided on the inflation connection end. The inflation connection structure described in this embodiment adopts an internal thread.

[0041] like Figure 3As shown, the valve core 1 is provided with two axial air cavities 3 which are not connected to each other in the axial direction, and the ends of the two axial air cavities 3 respectively pass through the two ends of the valve core 1. The axial air cavity 3 includes a first air cavity 31 and a second air cavity 32, the first air cavity 31 and the second air cavity 32 are not connected in the axial direction, a barrier 33 is provided between the first air cavity 31 and the second air cavity 32, the cavity diameter of the second air cavity 32 is smaller than the cavity diameter of the first air cavity 31, and the length of the second air cavity 32 is smaller than the length of the first air cavity 31.

[0042] like Figure 4 , Figure 5 As shown, in this embodiment, two groups of radial flow guide holes 7 are distributed in the same straight line in the axial direction of the valve core 1. The radial flow guide holes 7 include first flow guide holes 71 and second flow guide holes 72. Three first flow guide holes 71 and three second flow guide holes 72 are respectively provided.

[0043] Three first guide holes 71 communicating with the first air cavity 31 are evenly distributed on the circumference of the valve core 1 where the first air cavity 31 is located and close to the barrier body 33. Three second guide holes 72 communicating with the second air cavity 32 are evenly distributed on the circumference of the valve core 1 where the second air cavity 32 is located and close to the barrier body 33. The aperture of the first guide hole 71 is equal to that of the second guide hole 72, and the hole walls of the first guide hole 71 and the second guide hole 72 facing the barrier body 33 are tangent to the barrier body 33.

[0044] A first air flow channel 4 is formed between the first air cavity 31, the first flow guide hole 71 and the outer wall of the valve core, and a second air flow channel 5 is formed between the second air cavity 32, the second flow guide hole 72 and the outer wall of the valve core.

[0045] A hexagonal structure 15 is provided on the valve core 1 outside the second air cavity 32. A positioning groove 16 and a stop groove 17 are provided on the outer circumference of the valve core in the first air cavity 31. A stop ring 6 for axial positioning and limiting of the valve body is provided inside the stop groove 17.

[0046] like Figure 6 As shown, the valve body 2 is provided with a sliding cavity 21 inside, and the connecting cavity 8 is provided with two groups, and sliding seals 25 are respectively provided on the sliding cavities 21 on both sides of the two groups of connecting cavities 8. The cavity length of one of the two groups of connecting cavities 8 at least covers the two groups of radial guide holes 7 at the same time; the spacing between the two groups of connecting cavities 8 covers the two groups of radial guide holes 7 respectively.

[0047] The communication cavity includes a first communication cavity 81 and a second communication cavity 82 .

[0048] A first communicating cavity 81 and a second communicating cavity 82 are provided inside the sliding cavity 21 . Sealing grooves 24 are provided on the sliding cavity 21 at both sides of the first communicating cavity 81 and the second communicating cavity 82 . Sliding sealing members 25 are provided inside the sealing grooves 24 .

[0049] The second connecting cavity 82 is arranged toward the second air cavity 32 on the valve core, the first connecting cavity 81 is arranged in the middle position of the valve body 2, and a positioning member 26 is arranged on the end of the valve body 2 away from the second connecting cavity 82. In this embodiment, the positioning member adopts a positioning bead.

[0050] The diameter of the first connecting cavity 81 is larger than the diameter of the second connecting cavity 82, the axial length of the first connecting cavity 81 is larger than the axial length of the second connecting cavity 82, and the axial length of the first connecting cavity 81 can at least accommodate the length of the valve core 1 where the first guide hole 71 and the second guide hole 72 are located. When the inflation state is required, the first guide hole 71 and the second guide hole 72 are respectively located inside the first connecting cavity 81. At this time, the first air cavity 31, the first guide hole 71 and the outer wall of the valve core form a first air flow cavity between the first connecting cavity 81, and the second air cavity 32, the second guide hole 72 and the outer wall of the valve core form a second air flow cavity between the first connecting cavity 81. The communication between the first air flow cavity and the second air flow cavity forms an inflation flow channel between the inflation device and the operating body to be inflated.

[0051] The distance between the end face of the hexagonal structure 15 facing the first air cavity 31 and the second guide hole 72 is at least equal to that when the end face of the second connecting cavity 82 of the valve body 2 abuts against it, the first guide hole 71 and the second guide hole 72 are both inside the first connecting cavity 81.

[0052] Embodiment 2:

[0053] In Figure 13, Fig.14 In the illustrated embodiment, a multifunctional air flow valve comprises a valve core 1 and a valve body 2 which is arranged on the outside of the valve core 1 and moves relative to the valve core 1 to change the valve function. The valve core 1 is provided with two axial air cavities 3 with axial blocking arrangements. The valve core 1 is provided with two groups of radial guide holes 7 which are connected to the axial air cavities 3. The two axial air cavities 3 and the two groups of radial guide holes 7 form two groups of air flow channels. The valve body 2 is provided with a connecting cavity 8 which is used to connect, block or circulate the two groups of air flow channels.

[0054] The valve body 2 can slide or rotate axially on the valve core 1 to change the valve function.

[0055] The valve core 1 is integrally provided with an inflation connection end 11 connected to the inflation device and an operating body connection end 12 connected to the operating body to be inflated or deflated. An operating connection structure 13 is provided on the operating body connection end 12. In this embodiment, the connection structure adopts a plug-in structure, and an inflation connection structure 14 is provided on the inflation connection end. The inflation connection structure described in this embodiment adopts a plug-in structure.

[0056] The valve core 1 is provided with two axial air cavities 3 which are not connected to each other in the axial direction, and the ends of the two axial air cavities 3 respectively pass through the two ends of the valve core 1. The axial air cavity 3 includes a first air cavity 31 and a second air cavity 32, the first air cavity 31 and the second air cavity 32 are not connected in the axial direction, a barrier 33 is provided between the first air cavity 31 and the second air cavity 32, the cavity diameter of the second air cavity 32 is smaller than the cavity diameter of the first air cavity 31, and the length of the second air cavity 32 is smaller than the length of the first air cavity 31.

[0057] like Fig.14 As shown, in this embodiment, two groups of radial flow guide holes 7 are staggered in the axial direction of the valve core 1. The radial flow guide holes 7 include first flow guide holes 71 and second flow guide holes 72. Four first flow guide holes 71 and four second flow guide holes 72 are respectively provided.

[0058] At least one first guide hole 71 communicating with the first air cavity 31 is arranged on the valve core 1 where the first air cavity 31 is located and on the circumference of the valve core 1 near the barrier body 33, and at least one second guide hole 72 communicating with the second air cavity 32 is arranged on the valve core 1 where the second air cavity 32 is located and on the circumference of the valve core near the barrier body 33. The aperture of the first guide hole 71 is equal to that of the second guide hole 72, and the hole walls of the first guide hole 71 and the second guide hole 72 facing the barrier body 33 are tangent to the barrier body 33.

[0059] A first air flow channel 4 is formed between the first air cavity 31, the first flow guide hole 71 and the outer wall of the valve core, and a second air flow channel 5 is formed between the second air cavity 32, the second flow guide hole 72 and the outer wall of the valve core.

[0060] A hexagonal structure 15 is provided on the valve core 1 outside the second air cavity 32. A positioning groove 16 and a stop groove 17 are provided on the outer circumference of the valve core in the first air cavity 31. A stop ring 6 for axial positioning and limiting of the valve body is provided inside the stop groove 17.

[0061] The valve body 2 is provided with a sliding cavity 21 inside, and the connecting cavity 8 is provided with two groups, and sliding seals 25 are respectively provided on the sliding cavities 21 on both sides of the two groups of connecting cavities 8. The cavity length of one of the two groups of connecting cavities 8 at least covers the two groups of radial guide holes 7 at the same time; the spacing between the two groups of connecting cavities 8 covers the two groups of radial guide holes 7 respectively.

[0062] The communication cavity includes a first communication cavity 81 and a second communication cavity 82 .

[0063] A first communicating cavity 81 and a second communicating cavity 82 are provided inside the sliding cavity 21 . Sealing grooves 24 are provided on the sliding cavity 21 at both sides of the first communicating cavity 81 and the second communicating cavity 82 . Sliding sealing members 25 are provided inside the sealing grooves 24 .

[0064] The second connecting cavity 82 is arranged toward the second air cavity 32 on the valve core, the first connecting cavity 81 is arranged in the middle position of the valve body 2, and a positioning member 26 is arranged on the end of the valve body 2 away from the second connecting cavity 82. In this embodiment, the positioning member adopts a positioning bead.

[0065] The diameter of the first connecting cavity 81 is larger than the diameter of the second connecting cavity 82, the axial length of the first connecting cavity 81 is larger than the axial length of the second connecting cavity 82, and the axial length of the first connecting cavity 81 can at least accommodate the length of the valve core 1 where the first guide hole 71 and the second guide hole 72 are located. When the inflation state is required, the first guide hole 71 and the second guide hole 72 are respectively located inside the first connecting cavity 81. At this time, the first air cavity 31, the first guide hole 71 and the outer wall of the valve core form a first air flow cavity between the first connecting cavity 81, and the second air cavity 32, the second guide hole 72 and the outer wall of the valve core form a second air flow cavity between the first connecting cavity 81. The communication between the first air flow cavity and the second air flow cavity forms an inflation flow channel between the inflation device and the operating body to be inflated.

[0066] The distance between the end face of the hexagonal structure 15 facing the first air cavity 31 and the second guide hole 72 is at least equal to that when the end face of the second connecting cavity 82 of the valve body 2 abuts against it, the first guide hole 71 and the second guide hole 72 are both inside the first connecting cavity 81.

[0067] The use process of the multifunctional air flow valve described in the above embodiment is as follows:

[0068] The inflation connection end 11 of the multifunctional airflow valve is connected to the inflation device, and the operating body connection end 12 is connected to the operating body to be inflated or deflated. For example, the operating body connection end is connected to the tire.

[0069] like Figure 7 , Figure 8 As shown, when it is necessary to inflate the inflatable operating body, the valve body 2 is slid to a position abutting against the end face of the hexagonal structure 15. At this time, the first guide hole 71 and the second guide hole 72 are respectively located inside the first connecting cavity 81, so that a first air flow channel 4 is formed between the first air cavity 31, the first guide hole 71 and the first connecting cavity 81, and a second guide channel 5 is formed between the first connecting cavity 81 and the second guide hole 72 and the second air cavity 32. When the inflation device is turned on, the gas enters the second air flow channel 5 through the first air flow channel 4 and then enters the inside of the inflatable operating body to achieve inflation.

[0070] like Fig. 9 , Fig.10 As shown, when inflation is completed and the air pressure inside the operating body needs to be kept in a stable and constant state, that is, when it is in a stopped state, the valve body 2 is slid or rotated toward the inflation connection end 11, and when the positioning body 26 enters the positioning groove 16, the positioning body 26 and the positioning groove 16 limit the valve body 2. At this time, the first guide hole 71 is inside the first connecting cavity 81, and the second guide hole 72 is inside the second connecting cavity 82. Since sliding seals 25 are provided on both sides of the first connecting cavity 81, sliding seals 25 are also provided on both sides of the second connecting cavity 82. At this time, all sliding seals 25 are in a sealed state with the outer circumference of the valve core 1, so that the first airflow channel 4 and the second airflow channel 5 are blocked and no longer connected. Therefore, the valve is in a stopped working state, the first airflow channel and the second airflow channel are both in a sealed state, and the air pressure inside the first airflow channel and the second airflow channel is in a stable and constant pressure state. The stopped state can stabilize the air pressure inside the operating body and maintain the set inflation pressure state. At the same time, the air pressure inside the inflation device is also maintained, and there is no need to stop the inflation operation by stopping the inflation device.

[0071] like Fig.11 , Fig.12 As shown, when it is necessary to deflate the gas inside the operating body, the valve body 2 continues to slide or rotate toward the inflation connection end 11. When the end face of the valve body 2 abuts against the stop ring 6, the first guide hole 71 is inside the first connecting cavity, and the second connecting cavity is in the barrier body position and the first airflow channel is sealed and blocked by the sliding seal. At this time, the second guide hole 72 is outside the valve body 2 and connected to the atmosphere, and the gas inside the operating body is discharged through the second gas flow channel 5, thereby realizing the deflation operation inside the operating body.

[0072] The multifunctional airflow valve can be used between the inflatable device and the object to be inflated, to realize the air path connection and stop between the inflatable device and the object to be inflated, or to deflate the gas inside the inflatable object, to realize the inflation, deflation and stop actions, so as to realize the stable and constant pressure operation of the air pressure inside the inflatable device and the inflatable object, and the inflatable object can be inflated without frequently starting the inflatable device. The stop function is set on the valve, so that the air pressure inside the inflatable object can be kept in a stable state when the inflation is completed, and the inflation pressure can be more accurately guaranteed, so as to solve the problems that the inflatable device and the object to be inflated are directly disconnected after the inflation is completed in the existing inflation process, resulting in changes in the air pressure inside the inflatable object, and some gas will be released when disconnected, resulting in the inaccurate pressure inside the inflatable object, pressure fluctuations and other problems. The stop state can achieve the effect of stabilizing the air pressure inside the inflatable object, and ensure that the air pressure inside the inflatable object can reach the pressure displayed by the pressure device, with high accuracy. Moreover, the multifunctional airflow valve is easy to operate and has a simple structure. It can be applied between various inflatable devices and objects to be inflated, has a wide range of applications, and is highly practical.

[0073] The above embodiments are only some of the embodiments of the utility model, not all of them. At the same time, based on the embodiments described in the utility model, all other embodiments obtained by ordinary technicians in this field on the basis of the technical solution of this application without creative work should fall within the scope of protection of the utility model.

Claims

1. A multifunctional air flow valve, characterized in that: The invention comprises a valve core (1) and a movable sealing sleeve arranged outside the valve core (1) and a valve body (2) which moves relative to the valve core (1) to change the valve function. The valve core (1) is provided with two axial air cavities (3) with axial blocking arrangements inside. The valve core (1) is provided with two groups of radial flow guide holes (7) which are connected to the axial air cavities (3). The two axial air cavities (3) and the two groups of radial flow guide holes (7) form two groups of air flow channels. The valve body (2) is provided with a connecting cavity (8) which realizes the connection, blocking or flow of the two groups of air flow channels.

2. The multifunctional air flow valve according to claim 1, characterized in that: The two groups of radial guide holes (7) are distributed in a straight line or staggered in the axial direction of the valve core (1).

3. The multifunctional air flow valve according to claim 1, characterized in that: The two axial air cavities (3) are blocked inside the valve core (1) by a blocking body (33), and the ends of the two axial air cavities (3) respectively pass through the two ends of the valve core (1).

4. The multifunctional air flow valve according to claim 3, characterized in that: Each group of radial flow guide holes (7) is provided with at least one, and the two groups of radial flow guide holes (7) are respectively provided on the circumference of the valve core (1) at one end of the two axial air cavities (3) close to the barrier body (33).

5. The multifunctional air flow valve according to claim 1, characterized in that: A sliding cavity (21) is provided inside the valve body (2), two groups of connecting cavities (8) are provided, and sliding seals (25) are provided on the sliding cavities (21) on both sides of the two groups of connecting cavities (8), respectively.

6. The multifunctional air flow valve according to claim 5, characterized in that: The length of the cavity of one of the two groups of connecting cavities (8) at least covers the two groups of radial flow guide holes (7) at the same time; and the spacing between the two groups of connecting cavities (8) covers the two groups of radial flow guide holes (7) respectively.

7. The multifunctional air flow valve according to any one of claims 1 to 6, characterized in that: An operating connection structure (13) and an inflation connection structure (14) are respectively provided at both ends of the valve core (1).

8. The multifunctional air flow valve according to any one of claims 1 to 6, characterized in that: The valve core (1) has a hexagonal structure (15) on its outer circumference at one end, a positioning groove (16) on its outer circumference at the other end, and a stop groove (17) on its outer circumference outside the positioning groove (16).

9. The multifunctional air flow valve according to claim 8, characterized in that: A stop ring (6) for axial positioning and limiting of the valve body is arranged inside the stop groove (17).

10. The multifunctional air flow valve according to claim 8, characterized in that: The valve body (2) is provided with a positioning member (26) in cooperation with the positioning groove (16); the positioning member (26) is movably arranged on the inner wall of the valve body.

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