Butterfly valve with locking function for air pipe

Abstract

The utility model discloses a butterfly valve with a locking function for an air pipe, which relates to the technical field of butterfly valves and comprises a connecting pipe. The two ends of the valve rod are rotationally connected with the inner side of the connecting pipe, and the top of the valve rod penetrates through the connecting pipe and extends to the position above the connecting pipe; the inner side of the valve plate is fixedly connected with the outer side of the valve rod; the bottom of the locking device is fixedly connected with the top of the connecting pipe; and the bottom of the adjusting device is rotationally connected with the top of the locking device, and the adjusting device is used for adjusting the angle of the valve plate. According to the device, by arranging the adjusting device, the situation that the opening angle of the butterfly valve is changed due to mistaken touch of workers is avoided, normal use of the butterfly valve is ensured, by arranging the locking device and locking the valve rod, the valve plate is fixed, the situation that the valve plate rotates and the opening angle of the butterfly valve is changed due to the influence of external force is avoided, and accidents are reduced.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve technology, specifically to a butterfly valve for air ducts with a locking function. Background Technology

[0002] In today's industrial and construction sectors, the efficient and stable operation of ventilation systems plays a crucial role in ensuring the production environment and indoor air quality. As one of the key components of the ventilation system, the performance of butterfly valves for ductwork directly affects the working effect of the entire ventilation system.

[0003] However, the use of butterfly valves in traditional ductwork faces a series of problems. In actual operation, workers may accidentally touch the butterfly valve, which may cause the opening angle of the butterfly valve to change, thereby disrupting the original working state of the ventilation system and bringing great uncertainty to the normal operation of the ventilation system.

[0004] On the other hand, traditional duct butterfly valves usually do not have a reliable locking device. During the operation of the ventilation system, the valve plate of the butterfly valve is easily affected by external forces, such as the impact of airflow and the vibration of the duct. These external forces may cause the valve plate to rotate, change the opening angle of the butterfly valve, and thus affect the performance of the butterfly valve. In order to solve the above problems, we propose a duct butterfly valve with a locking function. Utility Model Content

[0005] To address the shortcomings of existing technologies, the technical solution adopted by this utility model is as follows: a duct butterfly valve with a locking function, comprising a connecting pipe; a valve stem, both ends of which are rotatably connected to the inner side of the connecting pipe, and the top of the valve stem extending through the connecting pipe and above it; a valve plate, the inner side of which is fixedly connected to the outer side of the valve stem; a locking device, the bottom of which is fixedly connected to the top of the connecting pipe; and an adjusting device, the bottom of which is rotatably connected to the top of the locking device. The adjusting device is used to adjust the angle of the valve plate. By setting the adjusting device, the position of the valve plate is adjusted, opening or closing the butterfly valve. Simultaneously, the adjusting device can prevent accidental operation by workers that could change the opening angle of the butterfly valve, ensuring its normal use. By setting the locking device, the valve stem is locked, thereby fixing the valve plate and preventing external forces from causing the valve plate to rotate, changing the opening angle of the butterfly valve, and affecting its use.

[0006] Preferably, the adjusting device includes a rotating column, the bottom of which is rotatably connected to the top of the locking device. A fixing plate is fixedly connected to the top of the inner cavity of the rotating column, and a rotating plate is rotatably connected to the bottom of the fixing plate. A fixing rod is threadedly connected to the inner side of the fixing plate. By setting the fixing rod, the adjustment device is prevented from rotating due to accidental contact, ensuring the stability of the butterfly valve when no adjustment is needed and reducing the occurrence of accidents.

[0007] Preferably, a rebound spring is fixedly connected to the side of the rotating plate near the fixed plate, and the end of the rebound spring away from the rotating plate is fixedly connected to the bottom of the fixed plate. A connecting assembly is fixedly connected to the bottom of the rotating plate, and a sliding column is provided at the bottom of the connecting assembly. By setting an adjustment device, it is convenient to unlock and lock the device and to adjust the position of the valve plate.

[0008] Preferably, the connecting assembly includes a connecting column, the top of which is fixedly connected to the bottom of the rotating plate, a connecting rod fixedly connected to the bottom of the connecting column, a sliding block rotatably connected to the bottom of the connecting rod, and the outer side of the sliding block slidably connected to the top of the sliding column. By setting the connecting assembly to transmit the movement of the rotating plate, the sliding column can move along with the rotation of the rotating plate.

[0009] Preferably, the locking device includes a sliding plate and a connecting plate. The outer side of the sliding plate is fixedly connected to the outer side of the sliding column, and the outer side of the connecting plate is fixedly connected to the inner side of the valve stem. The outer side of the sliding plate is slidably connected to the outer side of the connecting plate. By setting the sliding plate and the connecting plate, the movement of the sliding column is transmitted to the valve stem, thereby realizing the rotation adjustment of the valve plate.

[0010] Preferably, the locking device further includes a housing, the bottom of which is fixedly connected to the top of the connecting pipe, the top of which is rotatably connected to the bottom of the rotating column, a fixing ring fixedly connected to the inner side of the housing, a locking plate fixedly connected to the inner side of the fixing ring, and the outer side of the locking plate slidably connected to the outer side of the sliding plate. By setting the locking device, the position of the valve stem is locked after the valve plate is adjusted, preventing the valve plate from rotating due to external force, thus ensuring the stability and safety of the butterfly valve.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. This utility model opens or closes the butterfly valve by setting an adjustment device to adjust the position of the valve plate. At the same time, the adjustment device can prevent workers from accidentally touching the valve and causing changes in the opening angle, thus ensuring the normal use of the butterfly valve.

[0013] 2. This utility model uses a locking device to lock the valve stem, thereby fixing the valve plate and preventing it from being affected by external forces, which could cause the valve plate to rotate, change the opening angle of the butterfly valve, and affect its use. Attached Figure Description

[0014] Figure 1 This is the front view of this utility model;

[0015] Figure 2 This is a cross-sectional view of the present invention;

[0016] Figure 3 This is a schematic diagram of the structure of the adjusting device of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the connecting component of this utility model;

[0018] Figure 5 This is a schematic diagram of the locking device of this utility model;

[0019] Figure 6 This is an exploded view of the locking device of this utility model.

[0020] In the diagram: 1. Connecting pipe; 2. Valve stem; 3. Valve plate; 4. Locking device; 41. Sliding plate; 42. Connecting plate; 43. Housing; 44. Fixing ring; 45. Locking plate; 5. Adjusting device; 51. Rotating column; 52. Fixing plate; 53. Rotating plate; 54. Fixing rod; 55. Rebound spring; 56. Connecting assembly; 561. Connecting column; 562. Connecting rod; 563. Sliding block; 57. Sliding column; 6. Flange. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0022] Example:

[0023] Please see Figures 1-6This utility model provides a technical solution: a butterfly valve for ductwork with a locking function, comprising a connecting pipe 1; a valve stem 2, both ends of which are rotatably connected to the inner side of the connecting pipe 1, and the top of the valve stem 2 passing through the connecting pipe 1 and extending above it; a valve plate 3, the inner side of which is fixedly connected to the outer side of the valve stem 2; a locking device 4, the bottom of which is fixedly connected to the top of the connecting pipe 1; and an adjusting device 5, the bottom of which is rotatably connected to the top of the locking device 4. The adjusting device 5 is used to adjust the angle of the valve plate 3. In use, the connecting pipe 1 is connected to the ductwork via a flange 6. The valve stem 2 is rotated by the adjusting device 5, which in turn rotates the valve plate 3. After the valve plate 3 is rotated to the required angle, the adjusting device 5 is released, and the locking device 4 locks the position of the valve stem 2 to prevent it from moving. By adjusting the position of the valve plate 3 through the adjusting device 5, the butterfly valve can be opened or closed. At the same time, the adjusting device 5 can prevent accidental operation by workers that could cause changes in the opening angle of the butterfly valve, ensuring its normal use. By locking the valve stem 2 through the locking device 4, the valve plate 3 is fixed in place, preventing external forces from causing the valve plate 3 to rotate and change the opening angle of the butterfly valve, thus affecting its use.

[0024] The adjusting device 5 includes a rotating column 51, the bottom of which is rotatably connected to the top of the locking device 4. A fixing plate 52 is fixedly connected to the top of the inner cavity of the rotating column 51, and a rotating plate 53 is rotatably connected to the bottom of the fixing plate 52. A fixing rod 54 is threadedly connected to the inner side of the fixing plate 52. In use, there is a thread on the upper outer side of the fixing rod 54. When the butterfly valve is not being adjusted, the fixing rod 54 is screwed into the fixing plate 52. The bottom of the fixing rod 54 abuts against the rotating plate 53, preventing the rotating plate 53 from moving upward and avoiding accidental contact by the operator, which could cause the adjusting device 5 to rotate. By setting the fixing rod 54, the rotation of the adjusting device 5 caused by accidental contact is prevented, ensuring the stability of the butterfly valve when no adjustment is needed and reducing the occurrence of accidents.

[0025] A return spring 55 is fixedly connected to the side of the rotating plate 53 near the fixed plate 52. The end of the return spring 55 away from the rotating plate 53 is fixedly connected to the bottom of the fixed plate 52. A connecting assembly 56 is fixedly connected to the bottom of the rotating plate 53. A sliding post 57 is provided at the bottom of the connecting assembly 56. In use, the fixed rod 54 is unscrewed, and the rotating plate 53 is held. The rotating plate 53 drives the return spring 55 to compress. At the same time, the rotating plate 53 drives the connecting assembly 56 and the sliding post 57 to move downward. The sliding post 57 moves away from the locking device 4. At this time, the fixed plate 52 and the rotating plate 53 can be rotated. The rotating plate 53 drives the connecting assembly 56 to rotate. The connecting assembly 56 drives the sliding post 57 to rotate. The sliding post 57 drives the valve stem 2 to rotate, changing the rotation angle of the valve plate 3. After the rotation is completed, the rotating plate 53 is reset under the action of the return spring 55, and the sliding post 57 is reset upward. By setting the adjustment device 5, it is convenient to unlock the locking device 4 and adjust the position of the valve plate 3.

[0026] The connecting assembly 56 includes a connecting post 561, the top of which is fixedly connected to the bottom of the rotating plate 53. A connecting rod 562 is fixedly connected to the bottom of the connecting post 561. A sliding block 563 is rotatably connected to the bottom of the connecting rod 562. The outer side of the sliding block 563 is slidably connected to the top of the sliding post 57. In use, the rotating plate 53 drives the connecting post 561 to move downward, the connecting post 561 drives the connecting rod 562 to move downward, the connecting rod 562 drives the sliding block 563 to move downward, and the sliding block 563 drives the sliding post 57 to move downward. By setting the connecting assembly 56 to transmit the movement of the rotating plate 53, the sliding post 57 can move along with the rotation of the rotating plate 53.

[0027] The locking device 4 includes a sliding plate 41 and a connecting plate 42. The outer side of the sliding plate 41 is fixedly connected to the outer side of the sliding column 57, and the outer side of the connecting plate 42 is fixedly connected to the inner side of the valve stem 2. The outer side of the sliding plate 41 and the outer side of the connecting plate 42 are slidably connected. In use, the sliding column 57 drives the sliding plate 41 in the locking device 4 to rotate. Since the sliding plate 41 and the connecting plate 42 are in contact, the sliding plate 41 drives the connecting plate 42 to rotate, and the connecting plate 42 drives the valve stem 2 to rotate. By setting the sliding plate 41 and the connecting plate 42, the movement of the sliding column 57 is transmitted to the valve stem 2, thereby realizing the rotation adjustment of the valve plate 3.

[0028] The locking device 4 also includes a housing 43. The bottom of the housing 43 is fixedly connected to the top of the connecting pipe 1, and the top of the housing 43 is rotatably connected to the bottom of the rotating column 51. A fixing ring 44 is fixedly connected to the inner side of the housing 43, and a locking plate 45 is fixedly connected to the inner side of the fixing ring 44. The outer side of the locking plate 45 is slidably connected to the outer side of the sliding plate 41. In use, the sliding column 57 moves downward, causing the sliding plate 41 to slide downward. At this time, the sliding plate 41 does not contact the locking plate 45 on the fixing ring 44, and the sliding plate 41 is not blocked by the locking plate 45. After the valve plate 3 is adjusted, the sliding plate 41 returns to its original position. When the valve plate 3 rotates, the valve plate 3 will drive the valve stem 2 to rotate. The valve stem 2 will drive the connecting plate 42 to rotate, and the connecting plate 42 will drive the sliding plate 41 to rotate. The sliding plate 41 is blocked by the locking plate 45. At this time, the valve plate 3 cannot rotate. By setting the locking device 4, the position of the valve stem 2 is locked after the valve plate 3 is adjusted, preventing the valve plate 3 from rotating due to external force, thus ensuring the stability and safety of the butterfly valve.

[0029] Working principle:

[0030] In use, the connecting pipe 1 is connected to the air duct through the flange 6, and the valve stem 2 is rotated by the adjusting device 5. In use, the fixing rod 54 is unscrewed, the rotating plate 53 is held, the rotating plate 53 causes the return spring 55 to compress, and at the same time, the rotating plate 53 causes the connecting column 561 to move downward, the connecting column 561 causes the connecting rod 562 to move downward, the connecting rod 562 causes the sliding block 563 to move downward, and the sliding block 563 causes the sliding column 57 to move downward along the outer shell 43.

[0031] The sliding column 57 moves downward, causing the sliding plate 41 to slide downward. At this time, the sliding plate 41 does not contact the locking plate 45 on the fixed ring 44, and the sliding plate 41 is not blocked by the locking plate 45. Rotating the fixed plate 52 and the rotating plate 53 causes the fixed plate 52 to rotate the rotating column 51, the rotating plate 53 to rotate the connecting assembly 56, the connecting assembly 56 to rotate the sliding column 57, and the sliding column 57 to rotate the sliding plate 41 in the locking device 4. Since the sliding plate 41 is in contact with the connecting plate 42, the sliding plate 41 causes the connecting plate 42 to rotate, the connecting plate 42 causes the valve stem 2 to rotate, and the valve stem 2 causes the valve plate 3 to rotate.

[0032] After rotating the valve plate 3 to the required angle, release the adjusting device 5. The rotating plate 53 will reset under the action of the return spring 55, and the sliding plate 41 will reset. When the valve plate 3 rotates, the valve plate 3 will drive the valve stem 2 to rotate. The valve stem 2 will drive the connecting plate 42 to rotate. The connecting plate 42 will drive the sliding plate 41 to rotate. The sliding plate 41 will be blocked by the locking plate 45. At this time, the valve plate 3 cannot rotate.

[0033] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A butterfly valve for ductwork with a locking function, characterized in that, include: Connecting pipe (1); Valve stem (2), both ends of the valve stem (2) are rotatably connected to the inner side of the connecting pipe (1), and the top of the valve stem (2) passes through the connecting pipe (1) and extends to the top of the connecting pipe (1); Valve plate (3), the inner side of which is fixedly connected to the outer side of valve stem (2); Locking device (4), the bottom of which is fixedly connected to the top of connecting pipe (1); Adjustment device (5), the bottom of the adjustment device (5) is rotatably connected to the top of the locking device (4), the adjustment device (5) is used to adjust the angle of the valve plate (3); Flange (6), the outer side of which is fixedly connected to the outer side of the connecting pipe (1), The adjusting device (5) includes a rotating column (51), the bottom of which is rotatably connected to the top of the locking device (4), a fixing plate (52) is fixedly connected to the top of the inner cavity of the rotating column (51), a rotating plate (53) is rotatably connected to the bottom of the fixing plate (52), and a fixing rod (54) is threadedly connected to the inner side of the fixing plate (52). The locking device (4) includes a sliding plate (41) and a connecting plate (42). The outer side of the sliding plate (41) is fixedly connected to the outer side of the sliding column (57), and the outer side of the connecting plate (42) is fixedly connected to the inner side of the valve stem (2). The outer side of the sliding plate (41) is slidably connected to the outer side of the connecting plate (42). The locking device (4) also includes a housing (43), the bottom of which is fixedly connected to the top of the connecting pipe (1), the top of which is rotatably connected to the bottom of the rotating column (51), a fixing ring (44) is fixedly connected to the inner side of the housing (43), a locking plate (45) is fixedly connected to the inner side of the fixing ring (44), and the outer side of the locking plate (45) is slidably connected to the outer side of the sliding plate (41).

2. A butterfly valve for ductwork with a locking function according to claim 1, characterized in that: A spring (55) is fixedly connected to the side of the rotating plate (53) near the fixed plate (52). The end of the spring (55) away from the rotating plate (53) is fixedly connected to the bottom of the fixed plate (52). A connecting assembly (56) is fixedly connected to the bottom of the rotating plate (53). A sliding column (57) is provided at the bottom of the connecting assembly (56).

3. A butterfly valve for ductwork with a locking function according to claim 2, characterized in that: The connecting assembly (56) includes a connecting post (561), the top of which is fixedly connected to the bottom of the rotating plate (53), a connecting rod (562) is fixedly connected to the bottom of the connecting post (561), a sliding block (563) is rotatably connected to the bottom of the connecting rod (562), and the outer side of the sliding block (563) is slidably connected to the top of the sliding post (57).

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