Air valve device

Abstract

The utility model discloses an air valve device. The air valve device comprises a mounting cylinder, a blade assembly, a rotating cylinder and a driving part, the blade assembly is mounted on the mounting cylinder and comprises a plurality of blades distributed in the annular direction, and positioning parts and sliding parts are arranged at the ends, in the radial direction of the mounting cylinder, of the blades; the rotating cylinder and the mounting cylinder are coaxially arranged, one of the mounting cylinder and the rotating cylinder is provided with a plurality of sliding grooves which are annularly distributed, the other one of the mounting cylinder and the rotating cylinder is provided with a plurality of guiding parts which are annularly distributed, the sliding grooves correspond to the guiding parts in a one-to-one mode, and the sliding parts penetrate through the sliding grooves and extend to the guiding parts; the driving piece is used for driving the rotating cylinder to rotate so as to drive the sliding part to slide in the sliding groove along the track line of the guiding part, so that the blades rotate around the central axis of the positioning part, and synchronous opening or closing of the multiple blades is achieved. According to the air valve device, synchronous opening or closing of the multiple blades can be achieved, the consistency of the rotating angles of the multiple blades is guaranteed, and the purpose of accurately controlling the ventilation quantity is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation equipment, in particular to a wind valve device. Background Art

[0002] Air valve devices are usually installed in ventilation systems to adjust the air intake to meet production or living needs.

[0003] The circular air volume regulator structure in the prior art includes a body and blades. The outer wall of the body is sleeved with a rotating body, the rotating body is provided with a rotating body driven wheel, the large arc end of the blade is connected to a blade gear, and the blade gear is located on the outer wall of the body and meshes with the rotating body driven wheel.

[0004] A blade gear is installed at the large arc end of each blade. The driving wheel drives the driven wheel of the rotating body to rotate, which drives multiple blade gears to rotate, thereby realizing the opening and closing of multiple blades. The blade gear corresponding to each blade must be precisely matched with the driven wheel of the rotating body so that the blade can rotate to the preset angle. Since the matching between the blade gear corresponding to each blade and the driven wheel of the rotating body is prone to errors, it is not easy to ensure that each blade can rotate to the preset angle. Multiple blades have uneven rotation angles, and the consistency of the blade rotation angle is poor, making it impossible to accurately control the ventilation volume. Utility Model Content

[0005] In order to solve the above-mentioned problems, the utility model provides an air valve device, in which a driving member drives a rotating cylinder to rotate, and the rotating cylinder drives the sliding part of the blade to slide in the slide groove along the trajectory line of the guide part, so that the blade rotates around the central axis of the positioning part, thereby realizing the synchronous opening or closing of multiple blades, ensuring the consistency of the rotation angles of multiple blades, and achieving precise control of the ventilation volume.

[0006] The air valve device proposed in the utility model includes: a mounting cylinder; a blade assembly mounted on the mounting cylinder, the blade assembly including a plurality of circumferentially arranged blades, the blades being provided with positioning parts and sliding parts at their ends along the radial direction of the mounting cylinder; a rotating cylinder, the rotating cylinder being coaxially arranged with the mounting cylinder, one of the mounting cylinder and the rotating cylinder being provided with a plurality of circumferentially arranged slide grooves, and the other being provided with a plurality of circumferentially arranged guide parts, the plurality of slide grooves corresponding to the plurality of guide parts one by one, the sliding part passing through the slide groove and extending to the guide part; a driving member, the driving member being used to drive the rotating cylinder to rotate, so as to drive the sliding part to slide in the slide groove along the trajectory line of the guide part, so that the blades rotate around the central axis of the positioning part, thereby realizing synchronous opening or closing of the plurality of blades.

[0007] In some optional embodiments, the mounting cylinder includes a first cylinder body and a second cylinder body which are coaxially arranged; a partial section of the first cylinder body is arranged in the second cylinder body, the blade assembly is installed in the first cylinder body, and the rotating cylinder is arranged in the second cylinder body, and along the axial direction of the first cylinder body, the rotating cylinder has a first end face close to the first cylinder body and a second end face away from the first cylinder body, and the first end face of the rotating cylinder is arranged in close contact with the end face of the first cylinder body; a first limiting groove is provided at one end of the first cylinder body facing the rotating cylinder, the positioning portion is located in the first limiting groove, and the sliding portion is not lower than the end face of the first cylinder body; the rotating cylinder is provided with the sliding groove, and the sliding groove is connected to the end face of the rotating cylinder close to the first cylinder body, and the second cylinder is provided with the guiding portion; the guiding portion is configured to guide the sliding portion to slide in the sliding groove when the rotating cylinder rotates relative to the mounting cylinder.

[0008] In some optional embodiments, the inner wall surface of the second cylinder is convexly provided to form the guide portion, and a first stop portion is formed at one end of the guide portion; when the blade rotates to a preset angle, the sliding portion abuts against the first stop portion.

[0009] In some optional embodiments, a second limiting groove is provided on the inner wall surface of the second cylinder, and the positioning portion passes through the first limiting groove and extends to conflict with the second limiting groove.

[0010] In some optional embodiments, the rotating cylinder is sleeved on the mounting cylinder; a third limiting groove and the sliding groove are provided on the cylinder wall of the mounting cylinder, the sliding groove is connected to the end surface of the mounting cylinder, the positioning portion is located in the third limiting groove, and the rotating cylinder is provided with the guiding portion.

[0011] In some optional embodiments, the guide portion is a guide groove, and the inner wall surface of the rotating cylinder is recessed toward the outer wall surface to form the guide groove; or, the guide portion is a through groove, and the through groove passes through the cylinder wall of the rotating cylinder.

[0012] In some optional embodiments, the guide portion is extended in a straight line or in an arc shape.

[0013] In some optional embodiments, a plurality of circumferentially arranged support plates are provided in the mounting tube, and the blade is located between two adjacent support plates; second stop portions are provided on two opposite side surfaces of the support plate, and the two second stop portions are arranged at intervals along the thickness direction of the support plate, and the side portion of the blade on one side of the support plate is located on the first side of the second stop portion, and the side portion of the blade on the other side of the support plate is located on the second side of the second stop portion, and the first side and the second side are opposite to each other; when the blade is in a closed state, the side portion of the blade is in contact with the second stop portion.

[0014] In some optional embodiments, the driving member includes a motor, a driving wheel is provided on the driving shaft of the motor; a driven wheel is provided on the outer wall surface of the rotating cylinder, the driven wheel is meshingly connected with the driving wheel, and the motor drives the driving wheel to rotate to drive the rotating cylinder to rotate forward or reverse.

[0015] In some optional embodiments, a protective cover is further included; the protective cover is arranged on the motor, the driving wheel and the driven wheel.

[0016] In some optional embodiments, the mounting cylinder includes a first cylinder and a second cylinder coaxially arranged, the blade assembly is installed on the first cylinder, the rotating cylinder is arranged in the second cylinder, the third cylinder is connected to an end of the second cylinder away from the first cylinder, and the motor is arranged on the outer wall of the third cylinder.

[0017] In some optional embodiments, the rotating cylinder is sleeved on the mounting cylinder, and the motor is disposed on an outer wall surface of the mounting cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the air valve device of the first embodiment of the utility model;

[0019] Figure 2 This is the second structural schematic diagram of the air valve device of the first embodiment of the utility model;

[0020] Figure 3 This is a disassembled structural diagram of the air valve device of the first embodiment of the utility model;

[0021] Figure 4 A partial cross-sectional view of the air valve device of the first embodiment of the utility model;

[0022] Figure 5 A partial cross-sectional view of a blade assembly and a mounting tube according to a first embodiment of the utility model;

[0023] Figure 6 It is a partial assembly diagram of the blade assembly and the mounting tube of the first embodiment of the utility model;

[0024] Figure 7 It is a schematic diagram of the position of the blades in the installation cylinder and the rotating cylinder when the blades in the first embodiment of the utility model are in a closed state;

[0025] Figure 8 It is a schematic diagram of the position of the blades in the installation cylinder and the rotating cylinder when the blades in the first embodiment of the utility model are in an open state;

[0026] Fig. 9It is a schematic diagram of the relative positions of the blades and the support plate of the first embodiment of the utility model;

[0027] Fig.10 This is a schematic diagram of the structure of the air valve device of the second embodiment of the utility model;

[0028] Fig.11 This is the second structural schematic diagram of the air valve device of the second embodiment of the utility model;

[0029] Fig.12 This is a disassembled structural diagram of the air valve device of the second embodiment of the utility model;

[0030] Fig.13 It is a partial cross-sectional view of the installation cylinder and the rotating cylinder of the second embodiment of the utility model;

[0031] Fig.14 It is a schematic diagram of the position of the blades in the second embodiment of the utility model when they are in a closed state in the rotating cylinder;

[0032] Fig.15 It is a schematic diagram of the position of the blades in the second embodiment of the utility model when they are in an open state in the rotating cylinder;

[0033] Fig.16 This is a schematic structural diagram of a wind valve device according to a third embodiment of the utility model;

[0034] Fig.17 This is a disassembled structural diagram of the air valve device of the third embodiment of the utility model.

[0035] [Reference Signs]

[0036] The air valve device 100, the mounting cylinder 110, the first cylinder 111, the first limiting groove 1111, the second cylinder 112, the guide portion 1121, the first stop portion 1122, the second limiting groove 1123, the second slide groove 113, the third limiting groove 114, the support plate 115, the second stop portion 1151, the central body 116, the rotating cylinder 120, the first slide groove 121, the guide groove 122, the guide groove 122', the blade assembly 130, the blade 131, the positioning portion 1311, the sliding portion 1312, the driving member 140, the motor 141, the driving wheel 142, the driven wheel 143, the protective cover 150, and the third cylinder 160. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0038] The following orientation or positional relationship is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present disclosure. Specifically, relative to the above, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0040] First embodiment

[0041] Figure 1 This is one of the structural schematic diagrams of the air valve device of the first embodiment of the utility model. Figure 2 This is the second structural schematic diagram of the air valve device of the first embodiment of the utility model. Figure 3 This is a disassembled structural diagram of the air valve device of the first embodiment of the utility model. Figure 4 It is a partial cross-sectional view of the air valve device of the first embodiment of the utility model. Figure 5 It is a partial cross-sectional view of the blade assembly and the mounting tube of the first embodiment of the utility model. Figure 6 It is a schematic diagram of partial assembly of the blade assembly and the mounting tube of the first embodiment of the utility model. Figure 7 It is a schematic diagram of the position of the blades in the installation cylinder and the rotating cylinder when the blades of the first embodiment of the utility model are in a closed state. Figure 8 It is a schematic diagram of the position of the blades in the installation cylinder and the rotating cylinder when the blades of the first embodiment of the utility model are in the open state. Fig. 9 It is a schematic diagram of the relative positions of the blades and the support plate of the first embodiment of the utility model.

[0042] like Figures 1 to 9As shown, the air valve device 100 in this embodiment includes a mounting cylinder 110, a rotating cylinder 120, a blade assembly 130 and a driving member 140. The blade assembly 130 is mounted on the mounting cylinder 110. The blade assembly 130 includes a plurality of circumferentially arranged blades 131. The blades 131 are provided with a positioning portion 1311 and a sliding portion 1312 at the ends along the radial direction of the mounting cylinder 110. The rotating cylinder 120 is coaxially arranged with the mounting cylinder 110. One of the mounting cylinder 110 and the rotating cylinder 120 is provided with a plurality of circumferentially arranged sliding grooves, and the other is provided with a plurality of circumferentially arranged guiding portions. The plurality of sliding grooves correspond to the plurality of guiding portions one by one. The sliding portion 1312 penetrates the sliding groove and extends to the guiding portion. The driving member 140 is used to drive the rotating cylinder 120 to rotate, so as to drive the sliding portion 1312 to slide in the sliding groove along the trajectory line of the guiding portion, so that the blades 131 rotate around the central axis of the positioning portion 1311, so as to realize the synchronous opening or closing of the plurality of blades 131.

[0043] Specifically, the air valve device 100 of the utility model is installed in an air supply system to adjust the ventilation volume. The air valve device 100 includes a blade assembly 130, a mounting cylinder 110, a rotating cylinder 120 and a driving member 140. A supporting component is constructed in the mounting cylinder 110, and the blade assembly 130 is installed on the supporting component. For example, the supporting component includes a central body 116 and a plurality of supporting plates 115 arranged in a circumferential direction around the axial direction of the central body 116, one end of the supporting plate 115 is connected to the central body 116, and the other end of the supporting plate 115 is connected to the inner wall of the mounting cylinder 110.

[0044] The blade assembly 130 includes a plurality of blades 131 arranged circumferentially, and the blades 131 are located between two adjacent support plates 115. The number of blades 131 is set according to actual needs, for example, the number of blades 131 is five. The blades 131 are fan-shaped, and the small arc end of the blade 131 is rotatably connected to the central body 116 of the support component through a rotating shaft, and the large arc end of the blade 131 is clearance-matched with the inner wall surface of the mounting cylinder 110. The large arc end of the blade 131 is provided with a positioning portion 1311 and a sliding portion 1312, and the positioning portion 1311 is located in the middle of the large arc end, and the sliding portion 1312 is located at the side of the large arc end. When the blade 131 is in a closed state, the blade 131 is parallel to the support plate 115, and the ventilation volume is zero at this time, and the angle of the blade 131 is defined as zero degrees; when the blade 131 rotates from zero degrees in the closed state to 90 degrees, the blade 131 is fully open, and the ventilation volume is maximum at this time; the blade 131 can be rotated to a target angle according to the ventilation volume requirements, and the target angle can be 10 degrees, 20 degrees, 30 degrees, 40 degrees, etc.

[0045] The rotating cylinder 120 is coaxially arranged with the mounting cylinder 110. The rotating cylinder 120 can be mounted on the inner side of the mounting cylinder 110 or can be sleeved on the outer side of the mounting cylinder 110. In this embodiment, the rotating cylinder 120 is mounted on the inner side of the mounting cylinder 110. One of the mounting cylinder 110 and the rotating cylinder 120 is provided with a slide groove, and the other is provided with a guide portion. The number of the slide groove and the guide portion matches the number of the blades 131. For example, if the number of the blades 131 is 5, the number of the slide groove and the guide portion are also 5, and the slide groove and the guide portion correspond to each other.

[0046] The driving member 140 can drive the rotating cylinder 120 to rotate by gear transmission, chain transmission or belt transmission. Taking the rotation of a blade 131 as an example, a limiting groove is provided on the cylinder wall of the mounting cylinder 110, and the positioning portion 1311 of the blade 131 is located in the limiting groove, and the sliding portion 1312 of the blade 131 passes through the slide groove and extends to the guide portion. The extension direction of the slide groove is set to be non-parallel to the axial direction of the rotating cylinder 120 and the axial direction of the mounting cylinder 110, and the extension direction of the guide portion is adapted to the extension direction of the slide groove.

[0047] Taking the example of setting a slide groove on the rotating cylinder 120 and setting a guide part on the mounting cylinder 110, the driving member 140 drives the rotating cylinder 120 to rotate, and the rotating cylinder 120 drives the sliding part 1312 located in the slide groove to rotate. During the rotation of the sliding part 1312, under the guidance of the guide part 1121, along the trajectory line of the guide part 1121, it slides from the first end of the slide groove to the second end of the slide groove or from the second end of the slide groove to the first end of the slide groove. During the sliding part 1312 sliding along the slide groove, the positioning part 1311 is located in the limiting groove, and the relative position of the positioning part 1311 is fixed, so that the blade 131 rotates around the central axis of the positioning part 1311. When the sliding part 1312 is located at the first end of the slide groove, the blade 131 is in a closed state; when the sliding part 1312 is located at the second end of the slide groove, the blade 131 is in a fully open state; when the sliding part 1312 is located between the first end and the second end of the slide groove, the blade 131 is opened to the target angle.

[0048] The sliding part 1312 slides from the first end of the slide slot to the second end of the slide slot, or slides from the second end of the slide slot to the first end of the slide slot, by the forward or reverse rotation of the rotating cylinder 120. The sliding part 1312, the slide slot and the guide part 1121 correspond one to one. The rotation of the rotating cylinder 120 can drive the multiple blades 131 to open or close synchronously, ensuring the consistency of the rotation angles of the multiple blades 131, so as to achieve accurate control of the ventilation volume.

[0049] In this embodiment, the blade assembly 130 is installed on the mounting cylinder 110, and the rotating cylinder 120 and the mounting cylinder 110 are coaxially arranged. One of the rotating cylinder 120 and the mounting cylinder 110 is provided with a slide groove, and the other is provided with a guide portion 1121. Multiple blades 131, multiple slide grooves and multiple guide portions 1121 correspond one to one. The driving member 140 drives the rotating cylinder 120 to rotate, and the rotating cylinder 120 drives the sliding portion 1312 of the blade 131 to slide in the slide groove along the trajectory line of the guide portion 1121, so that the blade 131 rotates around the central axis of the positioning portion 1311, thereby realizing the synchronous opening or closing of multiple blades 131, ensuring the consistency of the rotation angles of multiple blades 131, and achieving precise control of the ventilation volume.

[0050] In this embodiment, if Figures 3 to 8 As shown, the installation cylinder 110 includes a first cylinder body 111 and a second cylinder body 112 which are coaxially arranged; a partial section of the first cylinder body 111 is arranged in the second cylinder body 112, the blade assembly 130 is installed in the first cylinder body 111, and the rotating cylinder 120 is arranged in the second cylinder body 112. Along the axial direction of the first cylinder body 111, the rotating cylinder 120 has a first end face close to the first cylinder body 111 and a second end face away from the first cylinder body 111, and the first end face of the rotating cylinder 120 is arranged in close contact with the end face of the first cylinder body 111; A first limiting groove 1111 is provided at one end of the first cylinder 111 facing the rotating cylinder 120, the positioning portion 1311 is located in the first limiting groove 1111, and the sliding portion 1312 is not lower than the end surface of the first cylinder 111; the rotating cylinder 120 is provided with a sliding groove, which is connected to the end surface of the rotating cylinder 120 close to the first cylinder 111, and the second cylinder 112 is provided with a guiding portion 1121; the guiding portion 1121 is configured to guide the sliding portion 1312 to slide in the sliding groove when the rotating cylinder 120 rotates relative to the mounting cylinder 110.

[0051] Specifically, the installation cylinder 110 includes a first cylinder body 111 and a second cylinder body 112, the first cylinder body 111 and the second cylinder body 112 are coaxially arranged, a partial section of the first cylinder body 111 is located in the second cylinder body 112, and the rotating cylinder 120 is located in the second cylinder body 112, and the rotating cylinder 120 and the second cylinder body 112 are in clearance fit. The rotating cylinder 120 is coaxially arranged with the first cylinder body 111, and the rotating cylinder 120 has a first end face and a second end face opposite to each other, and the end face of the rotating cylinder 120 close to the first cylinder body 111 is defined as the first end face, and the end face away from the first cylinder body 111 is defined as the second end face, and the second end face of the rotating cylinder 120 is close to the end face of the second cylinder body 112, so that the rotating cylinder 120 is located in the area between the end face of the first cylinder body 111 and the end face of the second cylinder body 112. The first cylinder body 111 and the second cylinder body 112 can be connected by plugging.

[0052] The blade assembly 130 is installed near the end face of the first cylinder 111. A first limiting groove 1111 is provided on the cylinder wall at the end face of the first cylinder 111. The positioning portion 1311 is cylindrical. The extension direction of the positioning portion 1311 is consistent with the radial direction of the first cylinder 111. A partial section of the positioning portion 1311 is located in the first limiting groove 1111. The first limiting groove 1111 can limit the rotation of the positioning portion 1311 along the circumferential direction of the first cylinder 111. The sliding portion 1312 is higher than the positioning portion 1311 and can be convexly provided at the end face of the first cylinder 111 to form a boss. When the blade 131 is closed, the sliding portion 1312 overlaps the boss. The extension direction of the sliding portion 1312 is consistent with the extension direction of the positioning portion 1311. The end of the sliding portion 1312 close to the blade 131 is connected to the blade 131 through a vertical rod, and the vertical rod is perpendicular to the blade 131.

[0053] The rotating cylinder 120 is provided with a slide groove, which is defined as a first slide groove 121. The first slide groove 121 penetrates the cylinder wall of the rotating cylinder 120, and the first slide groove 121 extends from the first end surface of the rotating cylinder 120 toward the second end surface of the rotating cylinder 120. The trajectory of the first slide groove 121 is an arc, that is, the extension direction of the first slide groove 121 is not parallel to the axial direction of the rotating cylinder 120. The sharp structure of the end of the first slide groove 121 allows the end of the first slide groove 121 to smoothly push up the sliding part 1312 during the rotation of the rotating cylinder 120, so that the sliding part 1312 moves along the trajectory of the guide part 1121.

[0054] The second cylinder 112 is provided with a guide portion 1121, which can be a guide groove, formed by the inner wall surface of the second cylinder 112 being recessed toward the outer wall surface of the second cylinder 112, and the guide groove can penetrate the cylinder wall of the second cylinder 112, or the guide groove can not penetrate the cylinder wall of the second cylinder 112. It is also possible to form the guide portion 1121 by convexly setting the inner wall surface of the second cylinder 112 as in the present embodiment. The trajectory line of the guide portion 1121 is an arc, that is, the extension direction of the guide portion 1121 is not parallel to the axial direction of the second cylinder 112. It is understandable that the guide portion 1121 is located in the area between the end surface of the first cylinder 111 and the end surface of the second cylinder 112.

[0055] The guide portion 1121 has a first end close to the first barrel 111 and a second end away from the first barrel 111. The blade 131 is in a closed state, the first end of the first slide groove 121 is opposite to the first end of the guide portion 1121, and after the sliding portion 1312 passes through the first slide groove 121, the end of the sliding portion 1312 extends to the guide portion 1121.

[0056] The rotating cylinder 120 rotates forward, driving the sliding part 1312 to slide along the trajectory of the guide part 1121 from the first end of the first slide groove 121 to the second end of the first slide groove 121. When the blade 131 is in an open state, the second end of the first slide groove 121 is opposite to the second end of the guide part 1121; the rotating cylinder 120 rotates reversely, driving the sliding part 1312 to slide along the trajectory of the guide part 1121 from the second end of the first slide groove 121 to the first end of the first slide groove 121. When the blade 131 is in a closed state, the first end of the first slide groove 121 is opposite to the first end of the guide part 1121.

[0057] During the rotation of the rotating cylinder 120, the positioning portion 1311 of the blade 131 is located in the first limiting groove 1111, limiting the rotation of the blade 131 along the circumferential direction of the first cylinder body 111, and the guide portion 1121 is conducive to ensuring the stability of the sliding portion 1312 sliding along the first sliding groove 121, thereby realizing the smooth rotation of the blade 131.

[0058] In this embodiment, the mounting cylinder 110 includes a first cylinder body 111 and a second cylinder body 112 which are coaxially arranged. The rotating cylinder 120 is located in the second cylinder body 112 and is located in the area between the end surface of the first cylinder body 111 and the end surface of the second cylinder body 112. The positioning portion 1311 of the blade 131 is located in the first limiting groove 1111 of the first cylinder body 111. The sliding portion 1312 passes through the first slide groove 121 of the rotating cylinder 120 and conflicts with the guide portion 1121 of the second cylinder body 112. The first limiting groove 1111 limits the rotation of the blade 131 along the circumferential direction of the first cylinder body 111. The guide portion 1121 is conducive to ensuring the stability of the sliding portion 1312 sliding along the first slide groove 121. The overall structure is compact and can achieve smooth rotation of the blade 131.

[0059] In the embodiments of the present disclosure, Figure 5 As shown, the inner wall surface of the second cylinder 112 is convexly provided with a guide portion 1121, and a first stop portion 1122 is formed at one end of the guide portion 1121; the blade 131 rotates to a preset angle, and the sliding portion 1312 conflicts with the first stop portion 1122. For example, the preset angle refers to the angle at which the air valve device 100 is opened to have a maximum ventilation volume, and at this time, the blade 131 is at the maximum opening and closing angle.

[0060] Specifically, the inner wall surface of the second barrel 112 is convexly provided to form a guide portion 1121, which is a flat strip-shaped body, and extends from the end surface close to the first barrel 111 to the end surface close to the second barrel 112. The guide portion 1121 has a first side surface away from the first barrel 111 and a second side surface facing the first barrel 111, and the second end of the guide portion 1121 is bent toward the first side surface of the guide portion 1121 to form a first stopper 1122.

[0061] During the rotation of the blade 131, the sliding portion 1312 moves along the first side surface of the guide portion 1121. The blade 131 rotates to a preset angle, which is defined as the maximum angle of rotation of the blade 131, for example, the preset angle is 90 degrees, and the sliding portion 1312 moves along the first side surface of the guide portion 1121 to the second end of the guide portion 1121, at which time the sliding portion 1312 conflicts with the first stop portion 1122. When the blade 131 rotates to the preset angle, the blade 131 may slightly shake due to the influence of wind speed and wind volume, and the sliding portion 1312 may slightly deviate, and the first stop portion 1122 can effectively prevent the sliding portion 1312 from detaching from the first side surface of the guide portion 1121.

[0062] If the first stop portion 1122 is not provided, when the sliding portion 1312 moves to the second end of the guide portion 1121, the sliding portion 1312 is easy to slip off, and the sliding portion 1312 is detached from the first side surface of the guide portion 1121. When the blade 131 rotates from a fully open state to a closed state, the sliding portion 1312 cannot move along the first side surface of the guide portion 1121, or the sliding portion 1312 collides with the guide portion 1121, thereby affecting the normal rotation of the blade 131.

[0063] The guide portion 1121 is formed by a protruding arrangement on the inner wall surface of the second cylinder 112. When the sliding portion 1312 moves along the guide portion 1121, the sliding portion 1312 moves along the trajectory of the guide portion 1121 and contacts with the first side surface of the guide portion 1121. The sliding portion 1312 and the guide portion 1121 are in single-sided contact. During the movement, the sliding portion 1312 will not shake. In addition, the single-sided contact between the sliding portion 1312 and the guide portion 1121 reduces the friction between the sliding portion 1312 and the guide portion 1121, which is beneficial to reducing the driving force for driving the sliding portion 1312 to move, thereby effectively reducing the noise generated during the rotation process.

[0064] In this embodiment, the inner wall surface of the second cylinder 112 is convexly provided to form a guide portion 1121, and a first stop portion 1122 is formed at one end of the guide portion 1121 away from the first cylinder 111. When the sliding portion 1312 slides along the first slide groove 121, the sliding portion 1312 only contacts one side of the guide portion 1121, thereby effectively reducing the noise during the rotation process. The first stop portion 1122 formed at the second end of the guide portion 1121 can effectively prevent the sliding portion 1312 from detaching from the guide portion 1121 when it moves to the end of the guide portion 1121, thereby effectively ensuring the reliability of the rotation of the blade 131.

[0065] In the embodiments of the present disclosure, Figure 3As shown, the inner wall surface of the second cylinder 112 is provided with a second limiting groove 1123 , and the positioning portion 1311 passes through the first limiting groove 1111 and extends to conflict with the second limiting groove 1123 .

[0066] Specifically, a first limiting groove 1111 is provided on the cylinder wall at the end face of the first cylinder 111, and the inner wall surface of the second cylinder 112 is recessed to form a second limiting groove 1123, which corresponds to the first limiting groove 1111 and has two opposite side groove walls and a groove bottom surface.

[0067] The bottom surface of the second limiting groove 1123 is higher than the bottom surface of the first limiting groove 1111, the positioning portion 1311 extends from the first limiting groove 1111 to the second limiting groove 1123, the bottom outer peripheral surface of the positioning portion 1311 conflicts with the bottom surface of the first limiting groove 1111, and the top outer peripheral surface of the positioning portion 1311 conflicts with the bottom surface of the second limiting groove 1123.

[0068] During the rotation of the positioning portion 1311, the first limiting groove 1111 and the second limiting groove 1123 limit the positioning portion 1311 from the upper and lower directions to prevent the positioning portion 1311 from moving along the axial direction of the mounting tube 110, which is beneficial to the stability of the rotation.

[0069] Further, the bottom surface of the first limiting groove 1111 is configured with an arc-shaped first concave groove, the curvature of which matches the outer peripheral contour of the positioning portion 1311, and the bottom surface of the second limiting groove 1123 is configured with an arc-shaped second concave groove, the curvature of which matches the outer peripheral contour of the positioning portion 1311. Thus, part of the outer peripheral surface of the positioning portion 1311 fits with the groove wall surface of the first concave groove, part of the outer peripheral surface of the positioning portion 1311 fits with the groove wall surface of the second concave groove, and the positioning portion 1311 is in surface contact with both the first concave groove and the second concave groove. During the rotation of the positioning portion 1311, the surface contact is conducive to the smoothness of the rotation.

[0070] In this embodiment, the inner wall surface of the second cylinder 112 is recessed to form a second limiting groove 1123, and the second limiting groove 1123 corresponds to the first limiting groove 1111. Part of the outer circumferential surface of the positioning portion 1311 conflicts with the bottom surface of the first limiting groove 1111, and part of the outer circumferential surface of the positioning portion 1311 conflicts with the bottom surface of the second limiting groove 1123. The second limiting groove 1123 and the first limiting groove 1111 limit the movement of the positioning portion 1311 along the axial direction of the mounting cylinder 110, which is beneficial to the smooth rotation of the blade 131.

[0071] In the embodiments of the present disclosure, Figure 7 , Figure 8 and Fig. 9As shown, a plurality of circumferentially arranged support plates 115 are provided in the mounting tube 110, and the blade 131 is located between two adjacent support plates 115; second stop portions 1151 are provided on two opposite side surfaces of the support plate 115, and the two second stop portions 1151 are arranged at intervals along the thickness direction of the support plate 115, and the side portion of the blade 131 on one side of the support plate 115 is located on the first side of the second stop portion 1151, and the side portion of the blade 131 on the other side of the support plate 115 is located on the second side of the second stop portion 1151, and the first side and the second side are opposite to each other; when the blade 131 is in a closed state, the side portion of the blade 131 is in gap contact with the second stop portion 1151.

[0072] Specifically, a support component is installed in the installation cylinder 110, and the support component includes a central body 116 and a plurality of support plates 115 arranged in a circumferential direction around the axial direction of the central body 116, one end of the support plate 115 is connected to the central body 116, and the other end of the support plate 115 is connected to the inner wall of the installation cylinder 110. The number of the support plates 115 is the same as the number of the blades 131, and the blades 131 are located between two adjacent support plates 115.

[0073] The support plate 115 has two opposite side surfaces, which are defined as a first side surface and a second side surface, respectively. The two side surfaces of the support plate 115 are respectively opposite to two adjacent blades 131. A second stopper 1151 is disposed on each of the two opposite side surfaces of the support plate 115. The second stopper 1151 on the first side surface and the second stopper 1151 on the second side surface are arranged at intervals along the thickness direction of the support plate 115. The thickness direction of the support plate 115 is consistent with the axial direction of the mounting tube 110.

[0074] The two side portions of the blade 131 are defined as the first side portion and the second side portion of the blade 131, respectively. The blade 131 opposite to the first side portion is defined as the first blade, and the blade 131 opposite to the second side portion is defined as the second blade. Along the thickness direction of the support plate 115, the second stopper 1151 has a first side and a second side opposite to each other. When the first blade and the second blade are in a closed state, the first side portion of the first blade is located at the first side of the second stopper 1151, and the first side portion of the first blade contacts the second stopper 1151; the second side portion of the second blade is located at the second side of the second stopper 1151, and the second side portion of the second blade contacts the second stopper 1151. The rotation direction of each blade 131 is the same. This arrangement ensures that the blade 131 will not interfere with the second stopper 1151 during rotation.

[0075] When the blade 131 is in the closed state, the second stopper 1151 on the first side of the support plate 115 effectively blocks the gas from entering the installation tube 110 along the gap between the first side of the first blade and the support plate 115, and the second stopper 1151 on the second side of the support plate 115 effectively blocks the gas from entering the installation tube 110 along the gap between the second side of the second blade and the support plate 115. By analogy, the second stopper 1151 on both sides of any support plate 115 can effectively block the gas from entering the installation tube 110 along the gap between the side of the blade 131 and the support plate 115, thereby effectively improving the sealing performance of the air valve device 100.

[0076] The shape of the side of the blade 131 is adapted to the shape of the second stopper 1151. For example, the second stopper 1151 has an inclined surface structure, and the side of the blade 131 also forms two inclined surface structures, and the two inclined surface structures are symmetrically distributed. The inclined surface structures of the second stopper 1151 and the side of the blade 131 are conducive to the compactness of the structure and further enhance the sealing performance.

[0077] In this embodiment, two opposite sides of the support plate 115 are provided with second stop portions 1151, and the two second stop portions 1151 are spaced apart along the thickness direction of the support plate 115. When the blade 131 is in a closed state, the second stop portions 1151 can effectively block the gas from entering the mounting tube 110 along the gap between the side of the blade 131 and the side of the support plate 115, thereby effectively improving the sealing performance of the air valve device 100.

[0078] Second embodiment

[0079] Fig.10 This is one of the structural schematic diagrams of the air valve device of the second embodiment of the utility model. Fig.11 This is the second structural schematic diagram of the air valve device of the second embodiment of the utility model. Fig.12 This is a disassembled structural diagram of the air valve device of the second embodiment of the utility model. Fig.13 It is a partial cross-sectional view of the installation cylinder and the rotating cylinder of the second embodiment of the utility model. Fig.14 This is a schematic diagram of the position of the blades in the second embodiment of the utility model when they are in a closed state in the rotating cylinder. Fig.15 This is a schematic diagram of the position of the blades in the second embodiment of the utility model when they are in an open state in the rotating cylinder.

[0080] In this embodiment, if Figures 10 to 15 As shown, the rotating cylinder 120 is sleeved on the mounting cylinder 110; a third limiting groove 114 and a sliding groove are provided on the cylinder wall of the mounting cylinder 110, the sliding groove is connected to the end surface of the mounting cylinder 110, the positioning portion 1311 is located in the third limiting groove 114, and the rotating cylinder 120 is provided with a guiding portion.

[0081] Specifically, the rotating cylinder 120 is sleeved on the outer side of the mounting cylinder 110, and the blade assembly 130 is installed at the end surface of the mounting cylinder 110. A third limiting groove 114 and a sliding groove are provided on the cylinder wall at the end surface of the mounting cylinder 110. The sliding groove provided on the mounting cylinder 110 is defined as a second sliding groove 113. The third limiting groove 114 is communicated with the end surface of the mounting cylinder 110. The second sliding groove 113 passes through the inner wall surface and the outer wall surface of the mounting cylinder 110, and the second sliding groove 113 is communicated with the end surface of the mounting cylinder 110. The second sliding groove 113 has a first end close to the end surface of the mounting cylinder 110 and a second end away from the end surface of the mounting cylinder 110.

[0082] The rotating cylinder 120 is provided with a guide portion, which is formed by the inner wall surface of the rotating cylinder 120 being recessed in the direction of the outer wall surface of the rotating cylinder 120. The guide portion may be a guide groove penetrating the rotating cylinder 120, or a guide groove 122 not penetrating the rotating cylinder 120. The guide portion has a first end close to the end surface of the mounting cylinder 110 and a second end away from the end surface of the mounting cylinder 110.

[0083] The positioning portion 1311 is located in the third limiting groove 114, and the two side groove walls of the third limiting groove 114 can limit the positioning portion 1311 from rotating along the circumferential direction of the mounting tube 110. After the sliding portion 1312 passes through the second sliding groove 113 of the mounting tube 110, the end of the sliding portion 1312 extends to the guide groove 122.

[0084] The positioning portion 1311 and the sliding portion 1312 are both cylindrical. It can be understood that there is a gap between the end face of the positioning portion 1311 and the inner wall surface of the rotating cylinder 120, and the length of the sliding portion 1312 is sufficient to allow the sliding portion 1312 to pass through the second sliding groove 113 of the mounting cylinder 110 and then the end of the sliding portion 1312 is located in the guide groove 122.

[0085] The rotating cylinder 120 rotates forward, driving the sliding part 1312 to slide along the trajectory of the guide groove 122 from the first end of the second slide groove 113 to the second end of the second slide groove 113; the rotating cylinder 120 rotates reversely, driving the sliding part 1312 to slide along the trajectory of the guide groove 122 from the second end of the second slide groove 113 to the first end of the second slide groove 113.

[0086] During the rotation of the rotating cylinder 120, the positioning portion 1311 of the blade 131 is located in the third limiting groove 114, which limits the positioning portion 1311 from rotating along the circumferential direction of the mounting cylinder 110. The guide groove 122 and the second slide groove 113 cooperate with each other to ensure the stability of the sliding portion 1312 sliding along the second slide groove 113, thereby achieving smooth rotation of the blade 131.

[0087] Furthermore, the rotating drum 120 can be assembled from two drum bodies, and the two drum bodies can be connected by plugging, which is convenient for installation and disassembly.

[0088] In this embodiment, the rotating cylinder 120 is mounted on the outer side of the mounting cylinder 110, the positioning portion 1311 of the blade 131 is located in the third limiting groove 114 of the mounting cylinder 110, the sliding portion 1312 passes through the second sliding groove 113 of the mounting cylinder 110 and conflicts with the guide portion of the rotating cylinder 120, and the third limiting groove 114 limits the rotation of the blade 131 along the circumferential direction of the mounting cylinder 110. The guiding portion is beneficial to ensuring the stability of the sliding portion 1312 sliding along the second sliding groove 113. The overall structure is compact and can achieve smooth rotation of the blade 131.

[0089] In this embodiment, if Fig.12 , Fig.14 and Fig.15 As shown, the guide portion is a guide groove 122 , and the inner wall surface of the rotating cylinder 120 is recessed toward the outer wall surface to form the guide groove 122 .

[0090] Specifically, the guide portion can be a guide groove 122, which is formed by the inner wall surface of the rotating cylinder 120 being recessed toward the outer wall surface, and the depth of the guide groove 122 is set according to actual needs. Furthermore, the bottom of the guide groove 122 protrudes from the outer wall surface of the rotating cylinder 120, which ensures the lightweight of the rotating cylinder 120 and satisfies the structural strength of the guide groove 122.

[0091] The width of the guide groove 122 matches the diameter of the sliding portion 1312. The guide groove 122 has a first groove wall surface and a second groove wall surface that are opposite to each other. During the forward or reverse rotation of the rotating cylinder 120, the sliding portion 1312 contacts one of the first groove wall surface and the second groove wall surface, and the sliding portion 1312 moves along the extension direction of the first groove wall surface or along the extension direction of the second groove wall surface, thereby achieving the sliding of the sliding portion 1312 in the second slide groove 113. In an optional embodiment, the guide portion may also be a through groove that passes through the wall of the rotating cylinder 120.

[0092] In this embodiment, the inner wall surface of the rotating cylinder 120 is recessed to form a guide groove 122. When the sliding part 1312 slides along the second slide groove 113, the sliding part 1312 contacts the groove wall surface of the guide groove 122, thereby realizing smooth sliding of the sliding part 1312 in the second slide groove 113, and the overall structure is compact.

[0093] In the embodiments of the present disclosure, Fig.12 , Fig.14 and Fig.15 As shown, the guide portion is extended in an arc shape.

[0094] Specifically, the second slide groove 113 is an arc-shaped slide groove, that is, the trajectory line of the second slide groove 113 is an arc line. The guide portion is a guide groove 122, and the guide groove 122 can be a linear guide groove or an arc-shaped guide groove.

[0095] Taking the guide groove 122 as a straight line as an example, the trajectory line of the guide groove 122 is a straight line, and the trajectory line of the second sliding groove 113 is an arc line. During the sliding process of the sliding part 1312, the force direction of the guide groove 122 is always perpendicular to the side groove wall of the guide groove 122.

[0096] Taking the arc-shaped guide groove 122 as an example, the trajectory line of the guide groove 122 is an arc line, and the trajectory line of the second slide groove 113 is also an arc line. During the sliding process of the sliding part 1312, the force direction of the guide groove 122 will change. The force direction of the guide groove 122 is always along the normal direction of the corresponding part that conflicts with the sliding part 1312. It can effectively reduce the risk of the second slide groove 113 and the guide groove 122 biting the sliding part 1312, which is beneficial to ensure the reliability of the rotation of the blade 131.

[0097] In an embodiment of the present disclosure, the driving member 140 includes a motor 141, and a driving wheel 142 is arranged on the driving shaft of the motor 141; a driven wheel 143 is arranged on the outer wall surface of the rotating cylinder 120, and the driven wheel 143 is meshed and connected with the driving wheel 142. The motor 141 drives the driving wheel 142 to rotate, so as to drive the rotating cylinder 120 to rotate forward or reverse.

[0098] like Figure 1 , Figure 4 and Figure 8 As shown, the air valve device 100 also includes a third cylinder 160, which is coaxially arranged with the mounting cylinder 110. The mounting cylinder 110 includes a first cylinder 111 and a second cylinder 112 which are coaxially arranged. The blade assembly 130 is installed in the first cylinder 111, and the rotating cylinder 120 is arranged in the second cylinder 112. The third cylinder 160 is connected to one end of the second cylinder 112 away from the first cylinder 111, and the motor 141 is arranged on the outer wall of the third cylinder 160.

[0099] Specifically, one end of the third cylinder 160 is connected to the second cylinder 112, and the other end of the third cylinder 160 is used to connect to the machine body. A mounting frame is provided on the outer wall surface of the third cylinder 160, and the motor 141 is installed on the mounting frame. The driving wheel 142 is installed on the driving shaft of the motor 141. The motor 141 is installed on the third cylinder 160, which is conducive to the convenience of winding the power cord.

[0100] The second cylinder 112 is provided with a relief opening to expose a part of the outer wall of the rotating cylinder 120, and the driven wheel 143 is located on the outer wall of the rotating cylinder 120 corresponding to the relief opening, and the driving wheel 142 is meshedly connected with the driven wheel 143. It can be understood that the driven wheel 143 is fan-shaped, and the number of teeth of the driven wheel 143 is sufficient to ensure that the blade 131 can rotate from zero to 90 degrees.

[0101] The motor 141 drives the driving wheel 142 to rotate, thereby driving the rotating cylinder 120 inside the mounting cylinder 110 to rotate forward or reverse, so as to close or open the blades 131 to a target angle.

[0102] like Fig.10 As shown, the rotating cylinder 120 is sleeved on the mounting cylinder 110, and the motor 141 is arranged on the outer wall surface of the mounting cylinder 110. A mounting frame is arranged on the outer wall surface of the mounting cylinder 110, and the motor 141 is mounted on the mounting frame. One end of the rotating cylinder 120 is rotatably connected with the connecting cylinder, and the connecting cylinder is used to be connected with the machine body. The driven wheel 143 is located on the outer wall surface of the rotating cylinder 120, and the driven wheel 143 is fan-shaped. The driving wheel 142 is meshed and connected with the driven wheel 143. The motor 141 is installed on the outer wall surface of the mounting cylinder 110, which is conducive to the compactness of the overall structure.

[0103] The motor 141 drives the driving wheel 142 to rotate, thereby driving the rotating cylinder 120 outside the mounting cylinder 110 to rotate forward or reverse, so as to close or open the blades 131 to a target angle.

[0104] The number of rotation angles of the blade 131 can be adjusted by adjusting the number of teeth of the driving wheel 142. The more teeth the driving wheel 142 has, the more the number of rotation angles increases. The increase in the number of rotation angles is conducive to accurate control of the air intake.

[0105] In this embodiment, the synchronous rotation of multiple blades 131 is achieved through the meshing connection between a driving wheel 142 and a driven wheel 143, which makes it simpler to adjust the angle. The target number of rotation angles can be achieved by adjusting the number of teeth of the driving wheel 142, which is conducive to precise control of the air intake volume.

[0106] Third embodiment

[0107] Fig.16 It is a structural schematic diagram of the air valve device of the third embodiment of the utility model. Fig.17 This is a disassembled structural diagram of the air valve device of the third embodiment of the utility model.

[0108] In this embodiment, if Fig.16 and Fig.17 As shown, the guide portion is a through groove, and the through groove passes through the wall of the rotating cylinder 120. Fig.16 and Fig.17 As shown, the guide portion is extended in a straight line, and this guide portion is defined as the guide groove 122'. During the sliding process of the sliding portion 1312, the side wall of the guide groove 122' abuts against the sliding portion 1312, and the sliding portion 1312 is driven to move in the second sliding groove 113 by a force perpendicular to the guide groove 122'.

[0109] The other structures of this embodiment are the same as those of the second embodiment and will not be described again.

[0110] In some embodiments of the present disclosure, Figure 2 and Fig.11 As shown, a protective cover 150 is also included; the protective cover 150 is arranged to cover the motor 141, the driving wheel 142 and the driven wheel 143.

[0111] Specifically, the protective cover 150 has a containing cavity, and the motor 141 , the driving wheel 142 and the driven wheel 143 are located in the containing cavity of the protective cover 150 . The protective cover 150 effectively protects the motor 141 , the driving wheel 142 and the driven wheel 143 .

[0112] The protective cover 150 can be connected to the mounting frame by fasteners. The protective cover 150 and the mounting frame are detachably connected, which is convenient for repairing or overhauling the motor 141, the driving wheel 142 and the driven wheel 143.

[0113] So far, the embodiments of the present invention have been described in detail in conjunction with the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the present invention.

[0114] It should be noted that the implementation methods not shown or described in the drawings or the text of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of each element are not limited to the various specific structures and shapes mentioned in the embodiments, and ordinary technicians in the field can simply change or replace them.

[0115] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A damper device, characterized in that: include: Install the barrel; A blade assembly is mounted on the mounting tube, the blade assembly comprises a plurality of blades arranged circumferentially, and the blades are provided with positioning parts and sliding parts at their ends along the radial direction of the mounting tube; A rotating cylinder, wherein the rotating cylinder is coaxially arranged with the mounting cylinder, one of the mounting cylinder and the rotating cylinder is provided with a plurality of circumferentially arranged slide grooves, and the other is provided with a plurality of circumferentially arranged guide portions, the plurality of slide grooves correspond to the plurality of guide portions one by one, and the sliding portion passes through the slide grooves and extends to the guide portions; A driving member is used to drive the rotating cylinder to rotate, so as to drive the sliding part to slide in the sliding groove along the trajectory line of the guide part, so that the blades rotate around the central axis of the positioning part to achieve synchronous opening or closing of multiple blades.

2. The air valve device according to claim 1, characterized in that: The mounting cylinder comprises a first cylinder body and a second cylinder body which are coaxially arranged; A partial section of the first cylinder is disposed in the second cylinder, the blade assembly is mounted in the first cylinder, the rotating cylinder is disposed in the second cylinder, and along the axis direction of the first cylinder, the rotating cylinder has a first end surface close to the first cylinder and a second end surface away from the first cylinder, and the first end surface of the rotating cylinder is arranged in close contact with the end surface of the first cylinder; A first limiting groove is provided at one end of the first cylinder body facing the rotating cylinder, the positioning portion is located in the first limiting groove, and the sliding portion is not lower than the end surface of the first cylinder body; The rotating cylinder is provided with the slide groove, the slide groove is communicated with the end surface of the rotating cylinder close to the first cylinder body, and the second cylinder body is provided with the guide part; The guide portion is configured to guide the sliding portion to slide in the slide groove when the rotating cylinder rotates relative to the mounting cylinder.

3. The air valve device according to claim 2, characterized in that: The inner wall surface of the second cylinder is convexly provided to form the guide portion, and a first stopper is formed at one end of the guide portion; The blade rotates to a preset angle, and the sliding portion contacts the first stopper.

4. The air valve device according to claim 2, characterized in that: The inner wall surface of the second cylinder is provided with a second limiting groove, and the positioning portion passes through the first limiting groove and extends to conflict with the second limiting groove.

5. The air valve device according to claim 1, characterized in that: The rotating cylinder is sleeved on the mounting cylinder; The wall of the mounting cylinder is provided with a third limiting groove and the sliding groove, the sliding groove is communicated with the end surface of the mounting cylinder, the positioning portion is located in the third limiting groove, and the rotating cylinder is provided with the guiding portion.

6. The air valve device according to claim 5, characterized in that: The guide portion is a guide groove, and the inner wall surface of the rotating cylinder is recessed toward the outer wall surface to form the guide groove; or, The guide portion is a through groove, and the through groove passes through the cylinder wall of the rotating cylinder.

7. The air valve device according to claim 5, characterized in that: The guide portion is extended in a straight line or in an arc shape.

8. The air valve device according to any one of claims 1 to 7, characterized in that: A plurality of circumferentially arranged support plates are arranged in the installation cylinder, and the blade is located between two adjacent support plates; The support plate is provided with second stoppers on two opposite side surfaces, and the two second stoppers are arranged at intervals along the thickness direction of the support plate, the side of the blade on one side of the support plate is located on the first side of the second stopper, and the side of the blade on the other side of the support plate is located on the second side of the second stopper, and the first side and the second side are opposite to each other; When the blade is in a closed state, a side portion of the blade contacts the second stopper.

9. The air valve device according to any one of claims 2 to 7, characterized in that: The driving member comprises a motor, and a driving wheel is arranged on a driving shaft of the motor; The outer wall surface of the rotating drum is provided with a driven wheel, and the driven wheel is meshedly connected with the driving wheel. The motor drives the driving wheel to rotate, so as to drive the rotating drum to rotate forward or reversely.

10. The air valve device according to claim 9, characterized in that: Also includes protective covers; The protective cover is arranged on the motor, the driving wheel and the driven wheel.

11. The air valve device according to claim 9, characterized in that: The air valve device also includes a third cylinder; The third cylinder is coaxially arranged with the mounting cylinder, and the mounting cylinder includes a first cylinder and a second cylinder which are coaxially arranged, the blade assembly is installed in the first cylinder, the rotating cylinder is arranged in the second cylinder, the third cylinder is connected to an end of the second cylinder away from the first cylinder, and the motor is arranged on the outer wall surface of the third cylinder.

12. The air valve device according to claim 9, characterized in that: The rotating cylinder is sleeved on the mounting cylinder, and the motor is arranged on the outer wall surface of the mounting cylinder.

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