Blade and power generation device having the same

Abstract

The present invention relates to the field of fluid power generation technology, and in particular to a blade and a power generation device having the same, wherein the blade includes a frame and an outer skin; the frame is vertically arranged and can be extended and retracted in the vertical direction; the outer skin is covered on the outside of the frame; when it is necessary to generate electricity with the aid of airflow or water flow, the frame is extended, and the outer skin is extended as the frame undergoes elastic deformation, and forms a blade with certain rigidity and strength with the frame. When it is not necessary to generate electricity with the aid of airflow or water flow, the frame contracts, and the outer skin spontaneously restores its deformation. At this time, the volume of the outer skin is greatly reduced, and the volume of the frame is greatly reduced, thereby reducing the space occupied by the blade when it is idle. At the same time, the surface area of ​​the outer skin is greatly reduced, and with the aid of airflow or water flow, debris falls off the outer skin and moves away along the airflow or water flow, greatly reducing the difficulty of cleaning the debris attached to the blade.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid power generation, and in particular to a blade and a power generation device having the same. Background Art

[0002] A power generation device is a device that uses air / water flow to generate electricity. A traditional power generation device includes a generator, a shroud, and a plurality of blades. The shroud is fixedly connected to the input shaft of the generator. A plurality of blades are evenly fixed to the outer periphery of the shroud along the circumference of the shroud. With the help of air / water flow, the plurality of blades and the shroud rotate to enable the generator to generate electricity. During the long-term use of a traditional power generation device, debris will adhere to the blades.

[0003] Currently, it is inconvenient to clean the debris attached to the traditional blades. Summary of the invention

[0004] The present invention provides a blade and a power generation device having the same, which are used to solve the problem of inconvenience in cleaning debris attached to a traditional blade.

[0005] In one aspect, the present invention provides a blade, comprising:

[0006] The frame is arranged vertically and can be extended and retracted in the vertical direction;

[0007] The outer skin is wrapped around the frame. When the frame stretches, the outer skin stretches along with the elastic deformation of the frame to form a blade with the frame. When the frame contracts, the outer skin spontaneously recovers its deformation.

[0008] In some embodiments, the skeleton comprises:

[0009] The inner skin is vertically arranged, and a plurality of folds are arranged on the side wall along the vertical direction, and each fold extends along the circumference of the inner skin; the inner skin is covered with an outer skin;

[0010] There are multiple bone joints, which are installed in the inner skin in sequence along the vertical direction.

[0011] In some embodiments, the skeleton further comprises:

[0012] There are multiple first folding members; one first folding member is installed between every two adjacent joints;

[0013] There are multiple second folding members, and one second folding member is installed between every two adjacent joints.

[0014] In some embodiments, each first folding piece has a first opening; each second folding piece has a second opening; and the second opening is adjacent to or opposite to the first opening.

[0015] In some of the embodiments, the same side of multiple joints are staggered in sequence in the vertical direction; the outer skin stretches as the skeleton deforms to form a blade with a torsion angle with the skeleton.

[0016] In some of the embodiments, a fluid storage cavity is formed inside the inner skin; the fluid storage cavity is used to store fluid; and a through hole is opened on each condyle.

[0017] In some embodiments, the skeleton further comprises:

[0018] There are multiple first memory alloy pieces; one first memory alloy piece is installed between every two adjacent bone joints.

[0019] Or, the second memory alloy component is one, with its axis vertically arranged and its outer side covered with the inner skin or wound around the outer side of the inner skin.

[0020] In some of the embodiments, the outer skin is an elastic film; the inner skin is a hard film.

[0021] In some of these embodiments, the interior of the inner skin forms a fluid storage cavity;

[0022] There are two bone joints, namely, the top bone joint and the bottom bone joint; the top bone joint is installed at the top end of the inner skin; the bottom bone joint is installed at the bottom end of the inner skin; a through hole is opened on the bottom bone joint;

[0023] The skeleton also includes:

[0024] There are multiple transverse ribs, and the axes are all arranged horizontally; the opposite ends of each transverse rib are respectively fixedly connected to the opposite inner walls of the inner skin;

[0025] The vertical rib is one with a vertical axis, the top end is fixedly connected to the top bone segment, and the bottom end is fixedly connected to the bottom bone segment, and can undergo elastic deformation.

[0026] On the other hand, the present invention provides a power generation device with blades, comprising a rotating barrel section, a guide cover, a fixed barrel section, a generator and the blades provided by any of the above embodiments;

[0027] One end of the rotating barrel section is rotatably connected to one end of the fairing, and the other end is rotatably connected to one end of the fixed barrel section;

[0028] The generator is installed in the fixed barrel section, and the input shaft is fixedly connected to the rotating barrel section;

[0029] There are multiple blades, which are evenly installed on the side wall of the rotating barrel section along the circumference of the rotating barrel section; multiple frame storage cavities are formed in the rotating barrel section along the circumference; the multiple frame storage cavities correspond to the frames of the multiple blades one by one.

[0030] The beneficial effects of the present invention are as follows: the blade of the present invention is provided with a skeleton and an outer skin. When it is necessary to generate electricity with the aid of airflow or water flow, the skeleton is stretched, and the outer skin is stretched as the skeleton undergoes elastic deformation, and the skeleton forms a blade with a certain rigidity and strength. The blade can rotate with the aid of airflow or water flow, thereby driving the generator to generate electricity. The skeleton plays a supporting role for the outer skin, and the outer skin improves the utilization rate of fluid energy. When it is not necessary to generate electricity with the aid of airflow or water flow, the skeleton shrinks, and the outer skin spontaneously recovers its deformation. At this time, the volume of the outer skin is greatly reduced, and the volume of the skeleton is greatly reduced, thereby reducing the space occupied by the blade when it is idle. At the same time, the surface area of ​​the outer skin is greatly reduced. With the aid of airflow or water flow, debris falls off the outer skin and moves away along the airflow or water flow, greatly reducing the difficulty of cleaning the debris attached to the blade. Compared with the form of retractable rigid blades, the structure is simpler and the manufacturing cost is reduced. At the same time, the space occupied by the blade when it is idle is further reduced. When the propeller is hit by hard debris in the water, the propeller blades can deform to a certain extent and cushion the impact, which helps to extend the service life of the propeller blades. At the same time, it is conducive to the lightweight design of the propeller blades and reduces the rotational inertia during power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic structural diagram of some specific embodiments of a power generation device with blades of the present invention;

[0032] Figure 2 yes Figure 1 A partial enlarged view of the middle A area;

[0033] Figure 3 yes Figure 1 The schematic structural diagrams of some specific embodiments of the blade skeleton in the power generation device with blades are shown;

[0034] Figure 4 yes Figure 3 A top view of the skeleton shown;

[0035] Figure 5 It is a schematic diagram of the structure of some other specific embodiments of the skeleton;

[0036] Figure 6 It is a schematic diagram of the structure of some specific embodiments of the skeleton;

[0037] Figure 7 It is a schematic diagram of the blade in the process of retraction;

[0038] Figure 8 This is a schematic diagram of the blade after it is retracted.

[0039] In the attached drawings, 110, skeleton; 111, inner skin; 112, joints; 113, first folding member; 114, second folding member; 115, first memory alloy member; 116, transverse ribs; 117, vertical ribs; 120, outer skin; 210, rotating barrel section; 220, fairing; 230, fixed barrel section. DETAILED DESCRIPTION

[0040] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] As mentioned in the background art, it is inconvenient to clean the debris attached to the traditional blades.

[0042] To solve the above problems, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 On the one hand, the present invention provides a blade, including a frame 110 and an outer skin 120. The frame 110 is arranged vertically. The frame 110 can be extended and retracted in the vertical direction. The outer skin 120 is covered on the outside of the frame 110. When the frame 110 is extended, the outer skin 120 is extended as the frame 110 undergoes elastic deformation to form a blade with the frame 110. When the frame 110 is contracted, the outer skin 120 spontaneously recovers the deformation.

[0043] When it is necessary to generate electricity with the help of air or water flow, such as Figure 1 As shown, the arrow direction is the direction of airflow or water flow. The skeleton 110 stretches, and the outer skin 120 stretches with the elastic deformation of the skeleton 110, forming a blade with certain rigidity and strength with the skeleton 110. The blade can rotate with the help of airflow or water flow, thereby driving the generator to generate electricity. The skeleton 110 supports the outer skin 120, and the outer skin 120 improves the utilization rate of fluid energy.

[0044] When power generation is performed without the aid of airflow or water flow, the frame 110 contracts and the outer skin 120 recovers its shape spontaneously. At this time, the volume of the outer skin 120 is greatly reduced, and the volume of the frame 110 is greatly reduced, thereby reducing the space occupied by the blades when idle. At the same time, the surface area of ​​the outer skin 120 is greatly reduced. With the aid of airflow or water flow, debris falls off the outer skin 120 and moves away along the airflow or water flow, greatly reducing the difficulty of cleaning the debris attached to the blades.

[0045] Compared with the form of retractable rigid blades, the structure is simpler and the manufacturing cost is reduced. At the same time, the space occupied by the blades when idle is further reduced. When encountering hard debris in the water, the blades can be deformed to a certain extent and can buffer the impact, which is conducive to extending the service life of the blades. At the same time, it is conducive to the lightweight design of the blades and reducing the moment of inertia during power generation.

[0046] Preferably, the outer skin 120 is a polymer elastic film, which has high elasticity, supports large deformation, is highly weather-resistant, has a relatively smooth surface, and can reduce the resistance of air or water flowing through the surface of the blade, thereby increasing the rotation speed and efficiency of the blade. The inner skin 111 is a polymer hard film, which is inelastic and has high strength.

[0047] In some embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown, the skeleton 110 includes an inner skin 111, a plurality of joints 112, a plurality of first folding members 113 and a plurality of second folding members 114. The inner skin 111 is arranged vertically, and a plurality of folds are arranged on the side wall in the vertical direction, and each fold extends along the circumference of the inner skin 111, so that the inner skin 111 can be stretched or contracted in the vertical direction. The inner skin 111 is covered with an outer skin 120. The outer skin 120 stretches or contracts along with the inner skin 111. A plurality of joints 112 are sequentially installed in the inner skin 111 in the vertical direction, and can support the inner skin 111. A fluid storage cavity is formed inside the inner skin 111. The fluid storage cavity is used to store fluids such as gas or liquid. A through hole for fluid to pass through is opened on each joint 112. Gas or liquid is input into the inner skin 111, so that the inner skin 111 can be expanded and stretched. Extracting gas or liquid from the inner skin 111 can shrink the inner skin 111. A first folding piece 113 is installed between each two adjacent joints 112. A second folding piece 114 is installed between each two adjacent joints 112. The first folding piece 113 and the second folding piece 114 can be unfolded and folded. During the expansion of the inner skin 111, the first folding piece 113 and the second folding piece 114 in the unfolded state can balance the forces on the four sides of each joint 112 to prevent the inner skin 111 from bending spontaneously during the stretching process. Moreover, each first folding piece 113 has a first opening. Each second folding piece 114 has a second opening. The second opening is adjacent to or opposite to the first opening. Compared with the form in which the second opening is in the same direction as the first opening, the forces on the four sides of each skeleton 110 are more balanced, and at the same time, the stiffness and strength of the blade are improved.

[0048] Preferably, each first folding member 113 is a hinge, and the hinge includes a first rotating plate and a second rotating plate that are rotatably connected to each other on one side. The first rotating plate is rotatably connected to the upper bone joint 112 on the side away from the second rotating plate. The second rotating plate is rotatably connected to the lower bone joint 112 on the side away from the first rotating plate. Compared with folding members of other structures, it is beneficial to reduce manufacturing costs.

[0049] Preferably, each second folding member 114 is a hinge, and the hinge includes a first rotating plate and a second rotating plate that are rotatably connected to each other on one side. The first rotating plate is rotatably connected to the upper bone joint 112 on the side away from the second rotating plate. The second rotating plate is rotatably connected to the lower bone joint 112 on the side away from the first rotating plate. Compared with folding members of other structures, this is conducive to reducing manufacturing costs.

[0050] Preferably, each joint 112 is made of a hard material such as hard plastic or metal and has a certain hardness.

[0051] Preferably, if Figure 4 As shown, the same side (right side) of the multiple joints 112 are staggered in the vertical direction. The outer skin 120 stretches as the skeleton 110 deforms to form a blade with a certain torsion angle with the skeleton 110. This is conducive to improving the utilization rate of the fluid energy of the blade, thereby improving the power generation efficiency and the power generation effect.

[0052] In other embodiments, Figure 5 As shown, the skeleton 110 includes an inner skin 111, a plurality of joints 112, a plurality of first folding members 113, a plurality of second folding members 114 and a plurality of first memory alloy members 115. The inner skin 111 is arranged vertically, and a plurality of folds are arranged on the side wall in the vertical direction, and each fold extends along the circumference of the inner skin 111, so that the inner skin 111 can be stretched or contracted in the vertical direction. The inner skin 111 is covered with an outer skin 120. The outer skin 120 stretches or contracts with the inner skin 111. A plurality of joints 112 are sequentially installed in the inner skin 111 in the vertical direction, and can support the inner skin 111. No fluid storage cavity is formed inside the inner skin 111. No through hole is arranged on each joint 112. A first folding member 113, a second folding member 114 and a first memory alloy member 115 are installed between each two adjacent joints 112. Furthermore, the first memory alloy member 115 is located between the first folding member 113 and the second folding member 114. Multiple first memory alloy members 115 are electrically connected to the same power source in series or in parallel. When the power source supplies power to each first memory alloy member 115, each first memory alloy member 115 contracts to drive each joint 112 to move, thereby causing the skeleton 110 to contract. When each first memory alloy member 115 loses power, it spontaneously recovers its deformation to drive each joint 112 to move, thereby causing the skeleton 110 to stretch.

[0053] In some other embodiments, the skeleton 110 includes an inner skin 111, a plurality of joints 112, a plurality of first folding members 113, a plurality of second folding members 114 and a second memory alloy member. The inner skin 111 is arranged vertically, and a plurality of folds are arranged on the side wall in the vertical direction, and each fold extends along the circumference of the inner skin 111, so that the inner skin 111 can be stretched or contracted in the vertical direction. The inner skin 111 is covered with an outer skin 120. The outer skin 120 stretches or contracts with the inner skin 111. A plurality of joints 112 are sequentially installed in the inner skin 111 in the vertical direction, and can support the inner skin 111. No fluid storage cavity is formed inside the inner skin 111. No through hole is arranged on each joint 112. A first folding member 113 and a second folding member 114 are installed between each two adjacent joints 112. The axis of the second memory alloy member is arranged vertically. The outer side of the second memory alloy is coated with the inner skin 111 or the second memory alloy is wound around the outer side of the inner skin 111. When the outer side of the second memory alloy is coated with the inner skin 111, the inner wall of the inner skin is connected to the outer side of the second memory alloy by bonding; and when the second memory alloy is wound around the outer side of the inner skin 111, the second memory alloy is located between the outer wall of the inner skin 111 and the inner wall of the outer skin 120, and is connected to the outer wall of the inner skin 111 by bonding. The second memory alloy is electrically connected to a power source. When the power source supplies power to the second memory alloy, the second memory alloy contracts to cause the skeleton 110 to contract. When the second memory alloy loses power, it spontaneously recovers its deformation to cause the skeleton 110 to stretch.

[0054] In some other embodiments, Figure 6As shown, the skeleton 110 includes an inner skin 111, two joints 112, a plurality of transverse ribs 116 and a vertical rib 117. The inner skin 111 is arranged vertically, and a plurality of folds are arranged on the side wall in the vertical direction, and each fold extends along the circumference of the inner skin 111, so that the inner skin 111 can stretch or contract in the vertical direction. The inner skin 111 is covered with an outer skin 120. The outer skin 120 stretches or contracts with the inner skin 111. The two joints 112 are the top joint and the bottom joint. The top joint is fixedly mounted on the top of the inner skin 111. The bottom joint is fixedly mounted on the bottom of the inner skin 111. A fluid storage cavity is formed inside the inner skin 111. The fluid storage cavity is used to store fluids such as gas or liquid. A through hole for fluid to pass through is provided on the bottom joint. The inner skin 111 can be expanded and stretched by inputting gas or liquid into the inner skin 111. The inner skin 111 can be contracted by extracting gas or liquid from the inner skin 111. The axes of the multiple transverse ribs 116 are all arranged horizontally. The opposite ends of each transverse rib 116 are respectively fixedly connected to the front and rear opposite inner walls of the inner skin 111 to prevent the inner skin 111 from spontaneously bending during the expansion process. The material of each transverse rib 116 is the same as that of the inner skin 111, which is inelastic and has high strength. The axis of the vertical rib 117 is arranged vertically, the top end is fixedly connected to the top segment, and the bottom end is fixedly connected to the bottom segment, which can be elastically deformed. The material of the vertical rib 117 is the same as that of the outer skin 120, which has high elasticity and supports large deformation. When gas or liquid is input into the inner skin 111, the vertical rib 117 is elastically deformed along the axial direction. When the gas or liquid is extracted from the inner skin 111, the vertical rib 117 spontaneously recovers the deformation, driving the top segment to move toward the bottom segment, so that the skeleton 110 shrinks. The transverse ribs 116 and the vertical ribs 117 can balance the stress of the inner skin 111 during its extension process, thereby preventing the frame 110 from bending spontaneously.

[0055] Reference Figure 1 , Figure 7 and Figure 8On the other hand, the present invention provides a power generation device with blades, including a rotating barrel section 210, a shroud 220, a fixed barrel section 230, a generator, and blades provided by any of the above embodiments. One end of the rotating barrel section 210 is rotatably connected to one end of the shroud 220 through a bearing, and the other end is rotatably connected to one end of the fixed barrel section 230 through a bearing. The shroud 220 can improve the flow of air or water and improve energy utilization. The generator is installed in the fixed barrel section 230, and the input shaft is fixedly connected to the rotating barrel section 210 through a transmission disc. The rotating barrel section 210 in a rotating state can drive the input shaft of the generator to rotate, thereby enabling the generator to generate electricity. There are multiple blades, which are evenly installed on the side wall of the rotating barrel section 210 along the circumference of the rotating barrel section 210. A plurality of skeleton 110 storage cavities are formed in the rotating barrel section 210 along the circumference. The multiple skeleton 110 storage cavities correspond to the skeletons 110 of the multiple blades one by one, and are used to store the shrunk skeletons 110.

[0056] When it is necessary to generate electricity with the help of airflow or water flow, the frame 110 stretches, and the outer skin 120 stretches as the frame 110 deforms, forming a blade with certain rigidity and strength with the frame 110. The blade can rotate with the help of airflow or water flow, thereby driving the generator to generate electricity. The frame 110 supports the outer skin 120, and the outer skin 120 improves the utilization rate of fluid energy.

[0057] When there is no need to rely on airflow or water flow to generate electricity, the frame 110 shrinks, and the outer skin 120 recovers its deformation along with the frame 110. At this time, the volume of the outer skin 120 is greatly reduced, and the volume of the frame 110 is greatly reduced, thereby reducing the space occupied by the blades when they are idle. At the same time, the surface area of ​​the outer skin 120 is greatly reduced, and with the help of airflow or water flow, debris falls off the outer skin 120 and moves along the airflow or water flow, greatly reducing the difficulty of cleaning the debris attached to the blades.

[0058] Compared with the form of retractable rigid blades, the structure is simpler and the manufacturing cost is reduced. At the same time, the space occupied by the blades when idle is further reduced. When encountering hard debris in the water, the blades can be deformed to a certain extent and can buffer the impact, which is conducive to extending the service life of the blades. At the same time, it is conducive to the lightweight design of the blades and reducing the moment of inertia during power generation.

[0059] It should be noted that when the skeleton 110 is composed of a memory alloy, etc., a power source is fixed to the fixed barrel section 230, and the power source is electrically connected to the memory alloy. When the interior of the inner skin 111 is used as a fluid storage chamber, a driving pump, a fluid storage source, and a power source are fixed to the fixed barrel section 230. Gas or liquid is stored in the fluid storage source. The driving pump is connected to the interior of the fluid storage source and the interior of the inner skin 111, respectively, to provide power for the flow of gas or liquid. The driving pump is powered by the power source.

[0060] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0061] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0062] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0064] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A power generation device having blades, It is characterized in that Including paddles; The blade comprises: The frame is arranged vertically and can be extended and retracted in the vertical direction; An outer skin is coated on the outside of the frame; when the frame is stretched, the outer skin stretches along with the elastic deformation of the frame to form the blade together with the frame; when the frame is contracted, the outer skin spontaneously recovers the deformation; The skeleton comprises: The inner skin is vertically arranged, and a plurality of folds are arranged on the side wall along the vertical direction, and each of the folds extends along the circumference of the inner skin; the inner skin is covered with the outer skin; a liquid storage cavity is formed inside the inner skin; the liquid storage cavity is used to store liquid; There are two bone joints, namely, a top bone joint and a bottom bone joint; the top bone joint is installed at the top end of the inner skin; the bottom bone joint is installed at the bottom end of the inner skin; a through hole is opened on the bottom bone joint; The skeleton also includes: There are multiple transverse ribs, and the axes are all arranged horizontally; the opposite ends of each transverse rib are respectively fixedly connected to the opposite inner walls of the inner skin; A vertical rib, which is one, has a vertical axis, a top end fixedly connected to the top bone segment, and a bottom end fixedly connected to the bottom bone segment, and can undergo elastic deformation; When liquid is input into the inner skin, the vertical ribs undergo elastic deformation along the axial direction; when the liquid is extracted from the inner skin, the vertical ribs spontaneously recover their deformation, driving the top segment to move toward the bottom segment, so that the skeleton contracts.

2. The power generation device with blades according to claim 1, It is characterized in that It also includes a rotating barrel section, a guide cover, a fixed barrel section and a generator; One end of the rotating barrel section is rotatably connected to one end of the fairing, and the other end is rotatably connected to one end of the fixed barrel section; The generator is installed in the fixed barrel section, and the input shaft is fixedly connected to the rotating barrel section; There are multiple blades, which are evenly installed on the side wall of the rotating barrel section along the circumference of the rotating barrel section; multiple frame storage cavities are formed in the rotating barrel section along the circumference; the multiple frame storage cavities correspond one-to-one to the frames of the multiple blades.

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