Gear-type synchronous valve

Abstract

The utility model provides a gear type synchronous valve, the blade is installed inside the outer frame, end portion transmission subassembly includes rotating shaft, gear, rotating shaft is fixed in the end portion of blade, rotating shaft passes through the mounting panel, rotating shaft, blade can revolve about own axis relative to mounting panel, gear is fixed on rotating shaft, rotating shaft of a plurality of end portion transmission subassembly is parallel, the gear of adjacent end portion transmission subassembly is engaged, driving shaft is coaxial fixed with rotating shaft of one end portion transmission subassembly. The above -mentioned gear type synchronous valve, through the setting of the transmission structure of gear, has eliminated the rotation error between the blade fundamentally, has guaranteed that all blades can close tightly when the valve is closed, has improved the sealing performance greatly, has prevented gas leakage effectively, has reached the dual purpose of energy saving and safety, in addition, the transmission of gear is stable and reliable, avoids the mutual knock of blade under high wind speed thoroughly, thereby has reduced the operating noise significantly.

Description

Technical Field

[0001] This utility model relates to a gear-type synchronous valve. Background Technology

[0002] In existing technologies, ventilation control valves commonly use a diagonal linkage structure to connect the blades. This transmission method has inherent defects, resulting in inconsistent rotation angles among the blades and severely asynchronous movements. For aluminum alloy airfoil blades that rely on the blade tips for tight contact, this asynchrony directly leads to poor sealing, creating significant leakage gaps between the blades. The consequences are twofold: firstly, a large amount of gas leaks from the gaps, resulting not only in significant energy waste but also, if used in pipelines transporting toxic or harmful gases, causing environmental pollution and personal safety risks; secondly, under high wind speed conditions, the asynchronous blades will rub against each other, generating harsh noise and affecting the working environment. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the valve blades in the prior art that are not synchronized, which easily leads to gas leakage and noise, and to provide a gear-type synchronous valve.

[0004] This utility model solves the above-mentioned technical problems through the following technical solutions:

[0005] This utility model provides a gear-type synchronous valve, including an outer frame, several blades, several end transmission assemblies, and a drive shaft. The outer frame is used for installation in a channel, and a mounting plate is provided on one side of the outer frame. The blades are installed inside the outer frame. The end transmission assemblies are arranged in a one-to-one correspondence with the blades, and the end transmission assemblies mount one end of the blades to the mounting plate. Each end transmission assembly includes a rotating shaft and a gear. The rotating shaft is fixed to the end of the blade and passes through the mounting plate. The rotating shaft and the blades can rotate relative to the mounting plate around their own axes. The gear is fixedly sleeved on the rotating shaft. The rotating shafts of the several end transmission assemblies are parallel to each other, and the gears of adjacent end transmission assemblies mesh with each other. The drive shaft is coaxially fixed with the rotating shaft of one of the end transmission assemblies.

[0006] In this technical solution, when the drive shaft rotates, the power is synchronously transmitted to all blades through the meshing relationship between gears, ensuring that all blades open or close at exactly the same angle, thereby achieving absolute synchronous movement of all blades.

[0007] Preferably, the mounting plate is provided with mounting holes; the end transmission assembly further includes a bushing, the bushing is installed in the mounting hole, the outer peripheral surface of the bushing mates with the inner peripheral surface of the mounting hole, and the inner peripheral surface of the bushing mates with the outer peripheral surface of the rotating shaft.

[0008] In this technical solution, the bushing, as a transition piece between the rotating shaft and the mounting plate, ensures that each rotating shaft is precisely perpendicular to the mounting plate, thereby guaranteeing the correct meshing of all gears and ensuring that the blades move synchronously.

[0009] Preferably, the end of the bushing facing the blade is provided with a limiting flange that protrudes radially outward, and the limiting flange is in contact with the surface of the mounting plate facing the blade.

[0010] In this technical solution, the limiting flange ensures that the bushing can be accurately pushed into the mounting hole until the limiting flange is tightly fitted with the surface of the mounting plate, preventing the bushing from being over-pressed or trapped inside the mounting hole during installation, and ensuring that the rotating shaft and gear are in the correct axial position as designed.

[0011] Preferably, the end drive assembly further includes a spacer sleeve, which is sleeved on the rotating shaft and located between the shaft sleeve and the blade.

[0012] In this technical solution, the spacer, through its precise thickness, sets and maintains an optimal micro-gap between the bushing and the blade, creating a physical isolation zone between the blade and the bushing, effectively avoiding direct contact and wear between them, while also reducing noise caused by contact.

[0013] Preferably, the outer frame further includes a surrounding panel, which is arranged circumferentially around the mounting plate, and the surrounding panel and the mounting plate form an accommodating space, within which the gear is located.

[0014] In this technical solution, the enclosure creates a space outside the frame to accommodate the gears, providing a closed and safe working environment for the gears and other components. This effectively prevents external dust and debris from entering the meshing area of ​​the gears, avoiding jamming or abnormal wear. It also prevents grease leakage and protects the gears and other components from accidental collisions or human interference, ensuring the long-term reliable operation of the gear transmission system.

[0015] Preferably, the end transmission assembly further includes a support convex ring and an annular ring. The support convex ring is fixed to the end face of the gear facing the mounting plate and is coaxially arranged with the rotating shaft. The end face of the support convex ring facing the mounting plate is provided with an annular groove. The annular ring is installed in the annular groove and is coaxially arranged with the rotating shaft. The annular ring is in contact with the surface of the mounting plate, and the cross-section of the annular ring in contact with the mounting plate is arc-shaped.

[0016] In this technical solution, a supporting convex ring ensures a small and suitable gap between the gear and the mounting plate, allowing the gear to rotate freely without interfering with the mounting plate. The cross-section of the annular ring that contacts the mounting plate is arc-shaped, reducing frictional resistance and making the gear rotation smoother. This helps all gears maintain synchronization and reduces motion lag or jamming caused by friction.

[0017] Preferably, the blade includes a blade body and a protective sleeve, the protective sleeve covering the end face of the blade body facing the end drive assembly; the end of the blade forms a first fixing hole that can be inserted into one end of the rotating shaft, the first fixing hole has a non-circular cross-section, and the first fixing hole extends through the protective sleeve into the blade body.

[0018] In this technical solution, the protective sleeve acts as a buffer layer, which can effectively prevent wear and noise caused by direct contact, collision or friction between the metal blade body and the spacer and other components. At the same time, the protective sleeve can better fill the micro gap between the blade end and the spacer and other components, ensuring the sealing of the blade end, preventing gas leakage, and also helping to absorb vibration, ensuring smoother transmission, thereby extending the service life of the entire valve.

[0019] Preferably, the end of the rotating shaft away from the blade is provided with a connecting hole extending axially; the end of the drive shaft facing the blade is provided with a connecting post protruding axially, the connecting post can be inserted into the connecting hole, and the outer peripheral surface of the connecting post matches the inner peripheral surface of the connecting hole; the connecting holes of the plurality of rotating shafts have the same specifications.

[0020] In this technical solution, the connecting holes at the ends of several rotating shafts are of the same specification, so that the drive shaft can be inserted into the end of any rotating shaft. According to actual needs, any gear can be used as the drive wheel to drive other gears to rotate.

[0021] Preferably, the gear has a second fixing hole that penetrates the gear along the axial direction. The cross-section of the second fixing hole is non-circular. The end of the rotating shaft away from the blade is located in the second fixing hole. The end of the drive shaft facing the blade can be inserted into the second fixing hole.

[0022] In this technical solution, a rigid connection without relative rotation is established between the gear and the rotating shaft and the drive shaft through the second fixing hole with a non-circular cross section, ensuring efficient and precise transmission of power from the drive shaft to the gear and the rotating shaft.

[0023] Preferably, the end transmission assembly further includes a retaining ring, which is fixed to the outer peripheral surface of the drive shaft and fits against the end face of the gear away from the blade.

[0024] In this technical solution, by setting a retaining ring, axial movement of the gear can be prevented, the axial position of the gear can be fixed, which helps to maintain the correct meshing state of the gear and prevents poor meshing caused by movement.

[0025] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0026] The positive and progressive effects of this utility model are as follows:

[0027] The aforementioned gear-type synchronous valve, through the gear transmission structure, fundamentally eliminates the rotational error between blades, ensuring that all blades can close tightly when the valve is closed, greatly improving the sealing performance, effectively preventing gas leakage, and achieving the dual goals of energy saving and safety; in addition, the gear transmission is smooth and reliable, completely avoiding the mutual rubbing of blades under high wind speeds, thereby significantly reducing operating noise. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the gear-type synchronous valve of this utility model.

[0029] Figure 2 for Figure 1 The left view of the gear-type synchronous valve shown.

[0030] Figure 3 for Figure 2 The image shows a cross-sectional view of the gear-type synchronous valve along line AA.

[0031] Figure 4 for Figure 3 A partial enlarged view of section B of the gear-type synchronous valve shown.

[0032] Explanation of reference numerals in the attached figures

[0033] Outer frame 1

[0034] Sealing baffle 11

[0035] Mounting plate 12

[0036] Mounting hole 13

[0037] Enclosure 14

[0038] 15 cubic meters of space

[0039] Leaf 2

[0040] Blade body 21

[0041] Protective Case 22

[0042] First fixing hole 23

[0043] Locking hole 24

[0044] End drive assembly 3

[0045] Rotating shaft 31

[0046] Connection hole 311

[0047] Gear 32

[0048] Second fixing hole 321

[0049] Bushing 33

[0050] Limiting flange 34

[0051] Spacer 35

[0052] Support ring 36

[0053] Circular ring 37

[0054] Annular groove 38

[0055] 39mm ring

[0056] drive shaft 4

[0057] Connecting post 41 Detailed Implementation

[0058] The present invention will be further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments described herein.

[0059] like Figures 1 to 4 The diagram illustrates an embodiment of the gear-type synchronous valve of this invention. The gear-type synchronous valve includes an outer frame 1 and several blades 2. The blades 2 are installed inside the outer frame 1, which is used for installation within a channel. When the blades 2 rotate to the sealed state, adjacent blades 2 overlap, and the edge blades 2 can contact the sealing baffle 11 of the outer frame 1, forming a sealed body with the outer frame 1 and the blades 2, thereby isolating the air on both sides of the valve within the channel. When the blades 2 rotate to the open state, a gap forms between adjacent blades 2, and the edge blades 2 also separate from the sealing baffle 11 of the outer frame 1, allowing air to circulate between the two sides of the valve within the channel.

[0060] The outer frame 1 has a mounting plate 12 on one side. The gear-type synchronous valve also includes several end drive assemblies 3 and a drive shaft 4. Each end drive assembly 3 corresponds to one of the blades 2. The end drive assembly 3 mounts one end of each blade 2 onto the mounting plate 12, and the other end of each blade 2 is mounted on the opposite side of the outer frame 1 relative to the mounting plate 12. Rotation of the drive shaft 4 can drive the several blades 2 to rotate synchronously via the end drive assemblies 3.

[0061] Specifically, the end transmission assembly 3 includes a rotating shaft 31 and a gear 32. The rotating shaft 31 is fixed to the end of the blade 2 and passes through the mounting plate 12. The rotating shaft 31 and the blade 2 can rotate relative to the mounting plate 12 around their own axis. The gear 32 is fixedly sleeved on the rotating shaft 31. The rotating shafts 31 of several end transmission assemblies 3 are parallel to each other, and the gears 32 of adjacent end transmission assemblies 3 mesh with each other. The drive shaft 4 is coaxially fixed with the rotating shaft 31 of one of the end transmission assemblies 3.

[0062] When the drive shaft 4 rotates, it drives the rotating shaft 31 and blades 2, which are fixedly connected to the drive shaft 4, to rotate together. Simultaneously, it drives the gear 32, which is fixed to the rotating shaft 31, to rotate. Since the gear 32 meshes with adjacent gears 32, the other gears 32, rotating shaft 31, and blades 2 also rotate synchronously. Therefore, when the drive shaft 4 rotates, power is synchronously transmitted to all blades 2 through the meshing relationship between the gears 32, ensuring that all blades 2 open or close at exactly the same angle, thus achieving absolute synchronous movement of all blades 2. The transmission structure of the gears 32 fundamentally eliminates rotational errors between blades 2, ensuring that all blades 2 can close tightly when the valve is closed, greatly improving sealing performance, effectively preventing gas leakage, and achieving the dual goals of energy saving and safety. Furthermore, the smooth and reliable transmission of the gears 32 completely avoids mutual rubbing of the blades 2 under high wind speeds, thus significantly reducing operating noise.

[0063] Among them, gear 32 can be made of ABS material, which can operate normally at very low temperatures, thus better controlling the valve cost. Once molded and fixed, the ABS gear will never experience fatigue, deformation, or rebound, minimizing valve maintenance and significantly reducing potential malfunctions. Gear 32 is also extremely convenient to install. Its precise dimensions ensure easy and secure contact and adhesion between gears, and the overlap distance between gears is precisely calculated to achieve an optimal value, preventing jamming when blade 2 opens and closes while overlapping.

[0064] like Figure 4As shown, the mounting plate 12 has mounting holes 13; the end transmission assembly 3 also includes a bushing 33, which is installed in the mounting hole 13. The outer circumferential surface of the bushing 33 mates with the inner circumferential surface of the mounting hole 13, and the inner circumferential surface of the bushing 33 mates with the outer circumferential surface of the rotating shaft 31. The bushing 33, as a transition piece between the rotating shaft 31 and the mounting plate 12, ensures that each rotating shaft 31 is precisely perpendicular to the mounting plate 12, thereby ensuring the correct meshing of all gears 32 and ensuring the synchronous movement of the blades 2. The inner circumferential surface of the bushing 33 and the outer circumferential surface of the rotating shaft 31 are mutually mating squares, and the outer circumferential surface of the bushing 33 and the inner circumferential surface of the mounting hole 13 are mutually mating circles. The rotating shaft 31 and the bushing 33 rotate together relative to the mounting hole 13. The bushing 33 is made of a material with a low coefficient of friction, and the contact surface between the bushing 33 and the mounting plate 12 is smooth, making the rotation of the blades 2 easier and more flexible, and reducing the torque required for drive.

[0065] The bushing 33 has a radially outward protruding limiting flange 34 at the end facing the blade 2, which fits against the surface of the mounting plate 12 facing the blade 2. The limiting flange 34 ensures that the bushing 33 can be accurately pushed into the mounting hole 13 until the limiting flange 34 fits tightly against the surface of the mounting plate 12, preventing the bushing 33 from being over-pressed or sunk into the mounting hole 12 during installation, and ensuring that the rotating shaft 31 and gear 32 are in the correct axial position as designed.

[0066] Furthermore, the end drive assembly 3 also includes a spacer 35, which is fitted onto the rotating shaft 31 and located between the bushing 33 and the blade 2. The spacer 35, through its precise thickness, sets and maintains an optimal micro-gap between the bushing 33 and the blade 2, establishing a physical isolation zone between the blade 2 and the bushing 33. This effectively avoids direct contact and wear between them, while also reducing noise caused by contact.

[0067] like Figure 4As shown, the end transmission assembly 3 also includes a supporting convex ring 36 and an annular ring 37. The supporting convex ring 36 is fixed to the end face of the gear 32 facing the mounting plate 12. The supporting convex ring 36 is coaxially arranged with the rotating shaft 31, and the end face of the supporting convex ring 36 facing the mounting plate 12 has an annular groove 38. The annular ring 37 is installed in the annular groove 38, and is coaxially arranged with the rotating shaft 31. The annular ring 37 contacts the surface of the mounting plate 12, and the cross-section of the annular ring 37 in contact with the mounting plate 12 is arc-shaped. The supporting convex ring 36 ensures that a small and suitable gap is formed between the gear 32 and the mounting plate 12, allowing the gear 32 to rotate freely without interfering with the mounting plate 12. The arc-shaped cross-section of the annular ring 37 in contact with the mounting plate 12 reduces frictional resistance, making the rotation of the gear 32 smoother and helping all gears 32 maintain synchronization, reducing lag or jamming caused by friction.

[0068] like Figure 4 As shown, the blade 2 includes a blade body 21 and a protective sleeve 22. The protective sleeve 22 covers the end face of the blade body 21 facing the end transmission assembly 3. A first fixing hole 23 is formed at the end of the blade 2, allowing insertion of one end of the rotating shaft 31. The cross-section of the first fixing hole 23 is non-circular, and the first fixing hole 23 extends through the protective sleeve 22 into the blade body 21. The protective sleeve 22 is typically made of an elastic material. During frequent opening and closing of the valve, the protective sleeve 22 acts as a buffer layer, effectively preventing wear and noise caused by direct contact, collision, or friction between the metal blade body 21 and components such as the spacer 35. Simultaneously, the protective sleeve 32 better fills the microscopic gaps between the end of the blade 2 and components such as the spacer 35, ensuring the sealing of the end of the blade 2, preventing gas leakage, and also helping to absorb vibration, ensuring smoother transmission, thereby extending the service life of the entire valve.

[0069] The first fixing hole 23 is used to insert the rotating shaft 31, so that the rotating shaft 31 is fixed to the blade body 21. The blade body 21 is provided with a locking hole 24 that passes radially through the first fixing hole 23. A locking bolt (not shown in the figure) is inserted into the locking hole 24, passing radially through the blade body 21 and the rotating shaft 31, so that the blade body 21 and the rotating shaft 31 are fixed.

[0070] The rotating shaft 31 has an axially extending connecting hole 311 at its end away from the blade 2; the drive shaft 4 has an axially protruding connecting post 41 at its end facing the blade. The connecting post 41 can be inserted into the connecting hole 311, and the outer circumferential surface of the connecting post 41 mates with the inner circumferential surface of the connecting hole 311. The connecting post 41, inserted into the connecting hole 311, forms a connection between the rotating shaft 31 and the drive shaft 4. The connecting holes 311 at the ends of several rotating shafts 31 are of the same specification, allowing the drive shaft 4 to be inserted into the end of any rotating shaft 31. Depending on actual needs, any gear 32 can be used as a drive wheel to drive the other gears 32 to rotate.

[0071] The gear 32 has a second fixing hole 321 extending through it along the axial direction. The cross-section of the second fixing hole 321 is non-circular, and the end of the rotating shaft 31 away from the blade 2 is located inside the second fixing hole 321. The end of the drive shaft 4 facing the blade 2 can be inserted into the second fixing hole 321. Through the non-circular cross-section of the second fixing hole 321, a rigid connection without relative rotation is established between the gear 32, the rotating shaft 31, and the drive shaft 4, ensuring efficient and precise power transmission from the drive shaft 4 to the gear 32 and the rotating shaft 31. The connection between the drive shaft 4 and the rotating shaft 31 is located in the second fixing hole 321, eliminating the need for additional couplings or connecting flanges, ensuring the coaxiality of the rotating shaft 31 and the drive shaft 4, thereby significantly reducing radial runout and wobble during transmission and ensuring smooth operation.

[0072] The end transmission assembly 3 also includes a retaining ring 39, which is fixed to the outer circumferential surface of the drive shaft 4 and fits against the end face of the gear 32 away from the blade 2. By setting the retaining ring 39, axial movement of the gear 32 can be prevented, thus fixing the axial position of the gear 32. This helps maintain the correct meshing state of the gear 32 and prevents poor meshing caused by movement.

[0073] like Figures 1 to 3 As shown, the outer frame 1 also includes a surrounding plate 14, which surrounds the mounting plate 12 circumferentially. The surrounding plate 14 and the mounting plate 12 form a receiving space 15, within which the gear 32 is located. The surrounding plate 14 creates a receiving space 15 around the outer frame 1 to accommodate the gear 32, providing a closed and safe working environment for the gear 32 and other components. This effectively prevents external dust and debris from entering the meshing area of ​​the gear 32, avoiding jamming or abnormal wear. It also prevents grease leakage and protects the gear 32 and other components from accidental impacts or human interference, ensuring the long-term reliable operation of the transmission system composed of the gear 32.

[0074] The outer frame 1 can be made of galvanized steel sheet, with a smooth surface and deburring process. The galvanized steel frame 1 is more corrosion-resistant than cold-rolled steel. The blade body 21 can be made of one-piece aluminum alloy. Due to the low density and light weight of aluminum, the blades 2 can open easily, and when the airflow comes from the front, the blades 2 can fit tightly against the sealing baffle 11, which is unmatched by conventional galvanized blades. The aluminum blade body 21 makes it less likely for sparks to be generated by friction between the blades 2, providing excellent explosion-proof performance in conditions involving explosive gases.

[0075] This utility model is not limited to the above-described embodiments. Any changes in its shape or structure fall within the protection scope of this utility model. The protection scope of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the protection scope of this utility model.

Claims

1. A gear-type synchronous valve, characterized in that, include: An outer frame, which is used for installation within the channel, has a mounting plate on one side; Several blades, said blades being installed inside the outer frame; A plurality of end drive assemblies are provided, each end drive assembly corresponding to one of the blades. Each end drive assembly mounts one end of the blade to the mounting plate. Each end drive assembly includes a rotating shaft and a gear. The rotating shaft is fixed to the end of the blade and passes through the mounting plate. The rotating shaft and the blade can rotate relative to the mounting plate around their own axis. The gear is fixedly sleeved on the rotating shaft. The rotating shafts of the plurality of end drive assemblies are parallel to each other, and the gears of adjacent end drive assemblies mesh with each other. The drive shaft is coaxially fixed with the rotation shaft of one of the end transmission components.

2. The gear-type synchronous valve as described in claim 1, characterized in that: The mounting plate is provided with mounting holes; the end transmission assembly also includes a bushing, which is installed in the mounting holes, the outer circumferential surface of the bushing mates with the inner circumferential surface of the mounting holes, and the inner circumferential surface of the bushing mates with the outer circumferential surface of the rotating shaft.

3. The gear-type synchronous valve as described in claim 2, characterized in that: The bushing has a limiting flange that protrudes radially outward at one end facing the blade, and the limiting flange is in contact with the surface of the mounting plate facing the blade.

4. The gear-type synchronous valve as described in claim 2 or 3, characterized in that: The end drive assembly also includes a spacer sleeve, which is sleeved on the rotating shaft and located between the shaft sleeve and the blade.

5. The gear-type synchronous valve as described in claim 1, characterized in that: The outer frame also includes a surrounding panel, which is arranged circumferentially around the mounting plate. The surrounding panel and the mounting plate form an accommodating space, and the gear is located within the accommodating space.

6. The gear-type synchronous valve as described in claim 1, characterized in that, The end drive assembly also includes: A support ring is fixed to the end face of the gear facing the mounting plate. The support ring is coaxially arranged with the rotating shaft, and the end face of the support ring facing the mounting plate is provided with an annular groove. An annular ring is installed in the annular groove. The annular ring is coaxially arranged with the rotating shaft and contacts the surface of the mounting plate. The cross-section of the annular ring that contacts the mounting plate is arc-shaped.

7. The gear-type synchronous valve as described in claim 1, characterized in that, The blade includes a blade body and a protective sleeve. The protective sleeve covers the end face of the blade body facing the end drive assembly. The end of the blade forms a first fixing hole that can be inserted into one end of the rotating shaft. The cross-section of the first fixing hole is non-circular, and the first fixing hole extends through the protective sleeve into the blade body.

8. The gear-type synchronous valve as described in claim 1, characterized in that: The rotating shaft has an axially extending connecting hole at the end away from the blade; the drive shaft has an axially protruding connecting post at the end facing the blade, the connecting post can be inserted into the connecting hole, and the outer circumferential surface of the connecting post matches the inner circumferential surface of the connecting hole; the connecting holes of several rotating shafts have the same specifications.

9. The gear-type synchronous valve as described in claim 1 or 8, characterized in that: The gear is provided with a second fixing hole through the gear along the axial direction. The cross-section of the second fixing hole is non-circular. The end of the rotating shaft away from the blade is located in the second fixing hole. The end of the drive shaft facing the blade can be inserted into the second fixing hole.

10. The gear-type synchronous valve as described in claim 1 or 8, characterized in that, The end transmission assembly also includes a retaining ring, which is fixed to the outer peripheral surface of the drive shaft and is attached to the end face of the gear away from the blade.

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