Manually-adjusted circular glass fiber reinforced plastic multi-blade air valve

Abstract

The utility model discloses a manually-adjusted circular glass fiber reinforced plastic multi-blade air valve which comprises an air valve pipe joint, a plurality of air valve blades and a plurality of air valve blades. The extension direction of the rotating shaft structure is perpendicular to the central axis of the air valve pipe joint, and the rotating shaft structure comprises a first rotating shaft, a second rotating shaft and a third rotating shaft; and the blade group and the connecting rod assembly are arranged at one ends of the rotating shaft structures and used for driving the rotating shaft structures to rotate synchronously. By means of the arranged blade set, the whole air valve is of a three-piece type or multi-piece type structure, the rotation radius and space are effectively reduced, and therefore the resistance of the blade set in the working process can be reduced, and the transmission and opening and closing functions can be achieved more easily; a connecting rod mechanism is additionally arranged at one end of the rotating shaft to achieve synchronous rotation of the blades, the blades are opened and closed at the same time, the height of the whole valve body can be reduced through the multi-blade structure, the size of the whole air valve is reduced, and assembling and overhauling are convenient.

Description

Technical Field

[0001] The utility model belongs to the field of environmental protection ventilation duct engineering, and particularly relates to a manually adjustable circular fiberglass multi-leaf air valve. Background Technique

[0002] An airtight valve is a valve used to isolate the ventilation system inside a protective project from the outside. It can be divided into two categories according to power: manual and electric. The former consists of a housing, a valve plate and a manual driving device, while the latter consists of a housing, a valve plate, a manual device, a reduction gearbox and an electric device, etc. It is installed on the air duct outside the inlet fan and the exhaust fan. When necessary, the valve can be closed to cut off the air path.

[0003] The existing production scheme is as follows: The fiberglass air valve adopts a valve disc structure in the form of pipe sections and single leaves. Through a handle or a turbine switch, and an external connecting rod mechanism drives a rotating shaft and a valve disc to open or close, so as to realize the work of controlling the gas flow.

[0004] The valve disc adopts a single-leaf (integral) structural design. When the pipe diameter and the air volume are large, during the process of opening or closing the valve disc, the valve disc will be subject to air resistance, which will increase with the increase of the pipe diameter specification, resulting in difficult opening and closing. In addition, adopting a single-leaf structure, the connection requirements between the leaf and the rotating shaft are higher, and problems such as loosening are likely to occur during use, affecting the service life.

[0005] Therefore, in order to solve the problem that the traditional dynamic airtight air valve is subject to excessive air resistance during opening and closing, it is urgent to design a manually adjustable multi-leaf air valve to realize the rapid opening and closing of the air valve. Content of the Utility Model

[0006] The purpose of the utility model is to provide a manually adjustable circular fiberglass multi-leaf air valve to solve the problem of excessive air resistance during opening and closing of the traditional dynamic airtight air valve mentioned in the above background technique. The following technical solutions are provided: A manually adjustable circular fiberglass multi-leaf air valve, comprising:

[0007] An air valve pipe section, and the air valve pipe section is in a cylindrical shape;

[0008] A rotating shaft structure, rotatably arranged inside the air valve pipe section, and the extending direction of the rotating shaft structure is perpendicular to the central axis of the air valve pipe section. The rotating shaft structure includes a first rotating shaft, a second rotating shaft and a third rotating shaft. The first rotating shaft, the second rotating shaft and the third rotating shaft are arranged in parallel;

[0009] A leaf group, fixedly arranged in the middle of the rotating shaft structure and capable of rotating around the rotating shaft structure. After the leaf group rotates, it closes into a disc shape;

[0010] A connecting rod assembly, arranged at one end of the rotating shaft structure, and used to drive the rotating shaft structure to rotate synchronously.

[0011] In this technical solution, the air valve pipe section is preferably made of fiberglass with a length L = 500 mm. The rotating shaft structure has at least three groups. When the rotating shaft structure is installed, it is fixed to the blade group. By cutting the circular fiberglass air valve blade into three or more pieces (the first blade, the second blade, and the third blade), and fixing them to the corresponding rotating shafts (corresponding to the first rotating shaft, the second rotating shaft, and the third rotating shaft) respectively; in order to ensure the stable rotation of the rotating shaft structure and the air valve pipe section, a sleeve can be added at the connection end of the air valve pipe section and the rotating shaft structure during product manufacturing, and effective sealing at the connection between the two can also be achieved.

[0012] The entire air valve adopts a three - piece or multi - piece structure, effectively reducing the rotation radius and space, thereby reducing the resistance when the blade group works, and thus more easily realizing the transmission and opening - closing functions; at the same time, by adopting the multi - blade form, the height of the entire valve body can be reduced, its volume can be decreased, which is convenient for assembly and maintenance.

[0013] In this product, the connecting rod assembly is placed outside the air valve pipe section. The connecting rod assembly is preferably made of fiberglass board or stainless steel board and can be connected to the rotating shaft structure. And the transmission assembly can rotate and self - lock. By rotating the handle, the transmission assembly drives the overall movement of the rotating shaft structure and the blade group, realizing the opening and closing of the air valve.

[0014] In any of the above - mentioned technical solutions, further, the limit plate is arranged around the inner end wall of the air valve pipe section, and the blade group is clamped with the limit plate after rotation. The blade group includes a first blade, the first blade is fixedly connected to one side of the first rotating shaft, the second blade is fixedly connected in the second rotating shaft, the third blade is fixedly connected in the third rotating shaft, and the first blade and the third blade are of the same size. The installation positions of the first blade and the third blade are centrosymmetric about the center of the second rotating shaft; connecting plates are respectively fixedly arranged on the opposite sides of the first blade and the third blade, and the two connecting plates are respectively rotationally closed with the corresponding card slots. Card slots are also respectively opened on the opposite sides of the second blade, and the opening directions of the two card slots are centrosymmetric about the center of the second rotating shaft.

[0015] In this technical solution, in order to reduce the wind resistance received when the entire air valve is opened and closed, the entire blade is divided into three parts: the first blade, the second blade, and the third blade. Connecting plates are respectively fixedly arranged on the opposite sides of the first blade and the third blade. When the first blade, the second blade, and the third blade rotate to a direction perpendicular to the axis of the air valve, at this time, the two connecting plates just close with the two card slots, and at this time, the three blades form a complete circle, and at this time, the air valve is in the closed state. The complete circular blade separates the air valve pipe section, realizing the closing of the air valve.

[0016] To prevent the formed closed circle from resetting under the action of wind force, a limiting plate is arranged in a ring shape at the inner end wall of the air valve pipe section. At this time, the limiting plate just fits the sides of the first blade, the second blade and the third blade. It should be noted that the limiting plate is not a complete ring, and it is disconnected at the first rotating shaft, the second rotating shaft and the third rotating shaft respectively to avoid movement interference with the blades.

[0017] The clamping grooves arranged in the second blade are respectively clamped with the connecting plates. The two ends of the second blade are not on the same horizontal plane, but are distributed on both sides of the rotation center of the second rotating shaft and have a certain dislocation, so as to effectively prevent the second blade from not perfectly fitting the limiting plate when it rotates to the vertical position to realize the airtightness of the air valve.

[0018] It should be noted that ribs can be added to the sides of the first blade, the second blade and the third blade according to the actual production situation to enhance the strength and stiffness of the whole blade.

[0019] In any of the above technical solutions, further, the connecting rod assembly includes cranks, which are respectively fixedly connected to the same-side ends of the first rotating shaft, the second rotating shaft and the third rotating shaft. The other ends of the cranks are hinged to the connecting rod through bolts to realize the synchronous rotation of the cranks.

[0020] The transmission assembly is fixedly arranged at the outer ring end wall of the air valve pipe section, and the other end of the second rotating shaft is power-connected to the transmission assembly. An input shaft is arranged on one side of the transmission assembly, and a handle is fixedly arranged at the end of the input shaft; the air valve pipe section is made of fiberglass material.

[0021] In this technical solution, preferably, the transmission assembly adopts a turbine assembly, which has a self-locking performance and can ensure the rotation of the rotating shaft structure while rotating the input shaft. When the rotating shaft structure is affected by wind resistance, the blades cannot rotate back due to the self-locking property of the transmission assembly, improving the stability of the whole air valve during use.

[0022] To realize the synchronous rotation of the first rotating shaft, the second rotating shaft and the third rotating shaft, three groups of cranks with equal lengths are hinged in the connecting rod through bolts to form a connecting rod mechanism. Adjust the tightening of the bolts. When the second rotating shaft rotates, the first rotating shaft, the second rotating shaft and the third rotating shaft can be synchronously rotated through this connecting rod mechanism, so as to perfectly realize the opening and closing of the first blade, the second blade and the third blade, ensuring that the rotation direction of the blade is consistent with the external valve handle and smoothly realizing the opening and closing of the air valve.

[0023] The beneficial effects of the present utility model are as follows: Through the set vane group, the entire air valve adopts a three-piece or multi-piece structure, effectively reducing the rotation radius and space, thereby reducing the resistance when the vane group works, and thus more easily realizing the transmission and opening / closing functions; and by attaching a connecting rod mechanism to one end of the rotating shaft, the synchronous rotation of multiple vanes is realized, enabling multiple vanes to open and close simultaneously. The multi-vane structure can reduce the height of the entire valve body, reduce the volume of the entire air valve, and facilitate assembly and maintenance. Brief Description of the Drawings

[0024] Figure 1 is a schematic external view of the present utility model;

[0025] Figure 2 is a schematic view when the vane group of the present utility model is opened;

[0026] Figure 3 is a schematic view when the vane group of the present utility model is closed;

[0027] Figure 4 is a schematic view of the connecting rod assembly of the present utility model.

[0028] In the figure, the reference numerals are: 10, air valve pipe joint; 20, rotating shaft structure; 21, first rotating shaft; 22, second rotating shaft; 23, third rotating shaft; 30, vane group; 31, first vane; 32, second vane; 33, third vane; 34, connecting plate; 35, card slot; 40, connecting rod assembly; 41, crank; 42, bolt; 43, connecting rod; 50, transmission assembly; 51, input shaft; 60, handle; 70, limiting plate. Detailed Embodiment

[0029] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0030] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present application. For the sake of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0031] Embodiment 1:

[0032] As Figures 1-3 shown, this embodiment provides a manually adjustable circular fiberglass multi - blade air valve, including:

[0033] An air valve pipe section 10, the air valve pipe section 10 is in a cylindrical shape;

[0034] A rotating shaft structure 20, which is respectively rotatably arranged inside the air valve pipe section 10, and the extending direction of the rotating shaft structure 20 is perpendicular to the central axis of the air valve pipe section 10. The rotating shaft structure 20 includes a first rotating shaft 21, a second rotating shaft 22, and a third rotating shaft 23. The first rotating shaft 21, the second rotating shaft 22, and the third rotating shaft 23 are arranged in parallel;

[0035] A blade group 30, which is fixedly arranged in the middle of the rotating shaft structure 20 and can rotate around the rotating shaft structure 20. After the blade group 30 rotates, it closes into a disc shape;

[0036] A connecting rod assembly 40, which is arranged at one end of the rotating shaft structure 20 and is used to drive each rotating shaft structure 20 to rotate synchronously.

[0037] In this technical solution, the air valve pipe section 10 is preferably made of fiberglass with a length L = 500 mm. The rotating shaft structure 20 has at least three groups. When the rotating shaft structure 20 is installed, it is fixed to the blade group 30. By cutting the circular fiberglass air valve blade into three or more pieces (the first blade 31, the second blade 32, and the third blade 33), and fixing them to the corresponding rotating shafts (corresponding to the first rotating shaft 21, the second rotating shaft 22, and the third rotating shaft 23) respectively; in order to ensure the stable rotation of the rotating shaft structure 20 and the air valve pipe section 10, a sleeve can be added at the connection end of the air valve pipe section 10 and the rotating shaft structure 20 during product manufacturing, and at the same time, effective sealing at the connection between the two is achieved.

[0038] The entire air valve adopts a three-piece or multi-piece structure, effectively reducing the rotation radius and space, thereby reducing the resistance when the blade group 30 works, and thus more easily realizing the transmission and opening / closing functions; at the same time, by adopting the multi-blade form, the height of the entire valve body can be reduced, its volume can be decreased, and it is convenient for assembly and maintenance.

[0039] In this product, the connecting rod assembly 40 is placed outside the air valve pipe joint 10. The connecting rod assembly 40 is preferably made of fiberglass plate or stainless steel plate and can be connected to the rotating shaft structure 20. And the transmission assembly 50 can rotate and self-lock. By rotating the handle 60, the transmission assembly 50 drives the overall movement of the rotating shaft structure 20 and the blade group 30, realizing the opening and closing of the air valve.

[0040] In a preferred embodiment of the present utility model:

[0041] As Figures 1-3 shown, specifically, the limiting plate 70 is annularly arranged at the inner end wall of the air valve pipe joint 10, and the blade group 30 is clamped with the limiting plate 70 after rotation. The blade group 30 includes a first blade 31, the first blade 31 is fixedly connected to one side of the first rotating shaft 21, a second blade 32 is fixedly connected in the second rotating shaft 22, a third blade 33 is fixedly connected in the third rotating shaft 23, and the first blade 31 and the third blade 33 are of the same size. The installation positions of the first blade 31 and the third blade 33 are centrosymmetric about the center of the second rotating shaft 22; connecting plates 34 are respectively fixedly arranged on the opposite sides of the first blade 31 and the third blade 33, and the two connecting plates 34 are respectively rotationally closed with the corresponding card slots 35. Card slots 35 are also respectively opened on the opposite sides of the second blade 32, and the opening directions of the two card slots 35 are also centrosymmetric about the center of the second rotating shaft 22.

[0042] In this technical solution, in order to reduce the wind resistance received when the entire air valve is opened and closed, the entire blade is divided into three parts: the first blade 31, the second blade 32, and the third blade 33. Connecting plates 34 are respectively fixedly arranged on the opposite sides of the first blade 31 and the third blade 33. When the first blade 31, the second blade 32, and the third blade 33 rotate to a direction perpendicular to the axis of the air valve, at this time, the two connecting plates 34 just close with the two card slots 35. At this time, the three blades form a complete circle, and at this time the air valve is in the closed state. The complete circular blade also separates the air valve pipe joint 10, realizing the closing of the air valve.

[0043] In order to prevent the formed circle from resetting under the action of wind force, a limiting plate 70 is annularly arranged at the inner end wall of the air valve pipe joint 10. At this time, the limiting plate 70 just fits with the sides of the first blade 31, the second blade 32, and the third blade 33. It should be noted that the limiting plate 70 is not a complete ring. It is respectively disconnected at the first rotating shaft 21, the second rotating shaft 22, and the third rotating shaft 23 to avoid movement interference with the blade.

[0044] The card slots 35 provided in the second vane 32 are respectively clamped with the connecting plate 34. The two ends of the second vane 32 are not on the same horizontal plane, but are distributed on both sides of the rotation center of the second rotating shaft 22 and have a certain dislocation, so as to effectively avoid the situation that the second vane 32 cannot fit perfectly with the limiting plate 70 when rotating to the vertical position, thus realizing the airtightness of the air valve.

[0045] It should be noted that rib plates can be added to the sides of the first vane 31, the second vane 32 and the third vane 33 according to the actual production situation, so as to enhance the strength and stiffness of the whole vane.

[0046] In a preferred embodiment of the present invention:

[0047] As Figures 2-4 shown, specifically, the connecting rod assembly 40 includes a crank 41, which are respectively fixedly connected to the same-side ends of the first rotating shaft 21, the second rotating shaft 22 and the third rotating shaft 23. The other end of the crank 41 is hinged to the connecting rod 43 through a bolt 42 to realize the synchronous rotation of the cranks 41.

[0048] The transmission assembly 50 is fixedly arranged at the outer ring end wall of the air valve pipe joint 10, and the other end of the second rotating shaft 22 is power-connected to the transmission assembly 50. An input shaft 51 is arranged on one side of the transmission assembly 50, and a handle 60 is fixedly arranged at the end of the input shaft 51; the air valve pipe joint 10 is made of fiberglass material.

[0049] In this technical solution, the transmission assembly 50 is preferably a turbine assembly, which has a self-locking performance and can ensure the rotation of the rotating shaft structure 20 while rotating the input shaft 51. When the rotating shaft structure 20 is affected by wind resistance, the blades cannot rotate back due to the self-locking property of the transmission assembly 50, improving the stability of the whole air valve during use.

[0050] In order to realize the synchronous rotation of the first rotating shaft 21, the second rotating shaft 22 and the third rotating shaft 23, three groups of cranks 41 with equal lengths are hinged in the connecting rod 43 through bolts 42 to form a connecting rod mechanism. By adjusting the tightening condition of the bolts 42, when the second rotating shaft 22 rotates, the synchronous rotation of the first rotating shaft 21, the second rotating shaft 22 and the third rotating shaft 23 is realized through this connecting rod mechanism, thus perfectly realizing the opening and closing of the first vane 31, the second vane 32 and the third vane 33, ensuring that the rotation direction of the vane is consistent with the external valve handle, and smoothly realizing the opening and closing of the air valve.

[0051] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and the features in the embodiments in the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative rather than restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. A manually adjustable circular glass fiber reinforced plastic multi-leaf air valve, characterized in that: include: The air valve pipe section (10) is cylindrical; A rotating shaft structure (20) is rotatably arranged inside the air valve pipe section (10), and an extending direction of the rotating shaft structure (20) is perpendicular to the central axis of the air valve pipe section (10); A leaf group (30) is fixedly arranged in the middle of the rotating shaft structure (20) and can rotate around the rotating shaft structure (20), and the leaf group (30) is closed into a disc shape after rotation; A limit plate (70) is arranged around the inner end wall of the air valve pipe section (10), and the leaf plate group (30) is engaged with the limit plate (70) after rotation; The connecting rod assembly (40) is arranged at one end of the rotating shaft structure (20) and is used to drive the rotating shaft structure (20) to rotate synchronously.

2. A manually adjustable circular glass fiber reinforced plastic multi-leaf air valve according to claim 1, characterized in that: The rotating shaft structure (20) comprises a first rotating shaft (21), a second rotating shaft (22) and a third rotating shaft (23), and the first rotating shaft (21), the second rotating shaft (22) and the third rotating shaft (23) are arranged in parallel.

3. A manually adjustable circular glass fiber reinforced plastic multi-leaf air valve according to claim 2, characterized in that: The sheet group (30) comprises: A first leaf sheet (31), the first leaf sheet (31) is fixedly connected to one side of the first rotating shaft (21), the second leaf sheet (32) is fixedly connected to the second rotating shaft (22), the third leaf sheet (33) is fixedly connected to the third rotating shaft (23), the first leaf sheet (31) and the third leaf sheet (33) are of the same size, and the installation positions of the first leaf sheet (31) and the third leaf sheet (33) are symmetrical about the center of the second rotating shaft (22).

4. A manually adjustable circular glass fiber reinforced plastic multi-leaf air valve according to claim 3, characterized in that: The opposite sides of the second leaf (32) are also provided with card slots (35), and the opening directions of the two card slots (35) are symmetrical about the center of the second rotating shaft (22).

5. A manually adjustable circular glass fiber reinforced plastic multi-leaf air valve according to claim 4, characterized in that: Connecting plates (34) are fixedly arranged on opposite sides of the first leaf piece (31) and the third leaf piece (33), and the two connecting plates (34) are respectively rotated and closed with the corresponding card slots (35).

6. A manually adjustable circular glass fiber reinforced plastic multi-leaf air valve according to claim 2, characterized in that: The connecting rod assembly (40) comprises: The cranks (41) are respectively fixedly connected to the same side ends of the first rotating shaft (21), the second rotating shaft (22) and the third rotating shaft (23); the other end of the crank (41) is hinged to the connecting rod (43) through a bolt (42) to achieve synchronous rotation between the cranks (41).

7. A manually adjustable circular glass fiber reinforced plastic multi-leaf air valve according to claim 2, characterized in that: The transmission assembly (50) is fixedly arranged on the outer ring end wall of the air valve pipe section (10), and the other end of the second rotating shaft (22) is dynamically connected to the transmission assembly (50). An input shaft (51) is arranged on one side of the transmission assembly (50), and a handle (60) is fixedly arranged at the end of the input shaft (51).

8. A manually adjustable circular glass fiber reinforced plastic multi-leaf air valve according to claim 1, characterized in that: The air valve pipe section (10) is made of glass fiber reinforced plastic.

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