Handle device and fireproof smoke exhaust valve actuator applying same

Abstract

The utility model discloses a handle device which comprises an actuator main shaft, a blade main shaft used for being arranged outside a fire damper in a sleeved mode, and the upper end of the blade main shaft extends out of the actuator main shaft. The fixed end of the driving handle is sleeved with the actuator main shaft, and the free end of the driving handle can rotate around the axis of the blade main shaft; the driven handle is arranged above the driving handle, the fixed end of the driven handle is sleeved with the extending end of the blade main shaft, and the free end of the driven handle is driven by the driving handle; the centering connecting assembly comprises a connecting piece connected with the driving handle and the driven handle in a penetrating mode, a centering sleeve arranged on the periphery of the connecting piece in a sleeving mode and a torsional spring arranged on the periphery of the centering sleeve in a sleeving mode, the torsional spring is arranged above the driven handle, and the two ends of the torsional spring abut against the driven handle and the driving handle respectively; and the driving handle and the driven handle always tend to be far away from each other. The centering sleeve fills the gap between the inner diameter of the torsional spring and the connecting piece, so that the position of the torsional spring is more stable, and it is guaranteed that the torsional spring cannot shift due to uneven stress in the working process.

Description

Technical Field

[0001] This utility model relates to the field of fire ventilation equipment technology, and in particular to a handle device and a fireproof smoke exhaust valve actuator using the handle device. Background Technology

[0002] A fireproof smoke exhaust valve actuator is a device used to control fireproof smoke exhaust valves. It regulates and controls the opening degree of the fireproof smoke exhaust valve and is widely used in automatic control systems for heating, ventilation, air conditioning, and refrigeration. Due to the internal structure of the actuator, if the mechanical parts wear, deform, or loosen, the valve may spring back when closed, preventing the valve blades from closing tightly. This could pose a safety hazard and create a risk of smoke leakage.

[0003] Patent application CN200820169896.6 discloses a handle device for a smoke exhaust valve actuator. It includes a handle body, a blade main shaft, and a mechanism main shaft fixedly connected to the handle body. A movable handle is located above the handle body, with one end fixedly connected to the extended end of the blade main shaft. The blade main shaft and the mechanism main shaft have a clearance fit. The handle body has an oblong hole, and the movable handle has a fixing member with its protruding end vertically downwards and slidingly fitted with the oblong hole. A torsion spring is installed on the fixing member, with its lower protruding end abutting against a stop block on the handle body, and its upper free end abutting against the inside of the movable handle. When the handle body is manually turned to close the valve, the handle body drives the mechanism main shaft to rotate. Because the blade main shaft is fixedly connected to the movable handle and has a clearance fit with the mechanism main shaft, the movable handle and the blade main shaft will not spring back with the mechanism main shaft under the torque of the torsion spring in the handle device of the smoke exhaust valve actuator.

[0004] The device in this patent mainly relies on torsion springs to function. However, when the torsion spring is working, it undergoes torsional deformation around the fixed part, and its center position is unstable during operation. This affects its normal torsional function, resulting in uneven transmission of torsional force or deviations in the coordination with other components. Utility Model Content

[0005] The first technical problem to be solved by this utility model is to propose a torsion spring centering handle device in response to the above-mentioned technical status quo.

[0006] The second technical problem to be solved by this utility model is to provide a fireproof smoke exhaust valve actuator with the above-mentioned handle device, in response to the above-mentioned technical status.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problem is: a handle device, comprising...

[0008] The actuator spindle is used to be sleeved on the blade spindle of the fire damper, with the upper end of the blade spindle extending out of the actuator spindle;

[0009] The active handle has its fixed end connected to the actuator spindle, and its free end can rotate around the axis of the blade spindle.

[0010] The driven handle is located above the driving handle. Its fixed end is connected to the extended end of the blade main shaft, and its free end is driven by the driving handle.

[0011] Its characteristic is that it also includes

[0012] The centering connection assembly includes a connector that passes through and connects the active handle and the driven handle, a centering sleeve that is sleeved on the outer periphery of the connector, and a torsion spring that is sleeved on the outer periphery of the centering sleeve. The torsion spring is located above the driven handle, and its two ends abut against the driven handle and the active handle respectively, and always tend to move the active handle and the driven handle away from each other.

[0013] Preferably, the centering sleeve is a tapered sleeve with an outer diameter that gradually increases from bottom to top, or a cylindrical structure. When a tapered sleeve is used, the height is adjustable, but it is not convenient for the user to install. On the other hand, when a cylindrical structure, such as a straight cylindrical nut, is used, the height is fixed, and the user can install it easily.

[0014] Preferably, the connector has an external thread, and the centering sleeve has an internal thread; the connector and the centering sleeve are connected by a threaded engagement. The connector can easily adjust the connection between the driving handle and the driven handle via the external thread, and the centering sleeve, fitted over the connector, protects the threads and prevents them from being worn by the torsion spring.

[0015] Furthermore, the centering sleeve uses an internal thread to engage with the external thread of the connector to achieve axial pre-tightening of the active handle and the driven handle.

[0016] Preferably, a washer is further fitted around the outer periphery of the connector, the centering sleeve is located below the washer and supports the washer, and the upper part of the torsion spring abuts against the lower part of the washer. The centering sleeve can balance the upper washer, so that the torsion spring will not be tilted when it contacts the washer.

[0017] Preferably, the active handle has an oblong connecting hole, and the driven handle has a circular connecting hole. The connector passes through the oblong connecting hole and the circular connecting hole, so that the driven handle can move relative to the active handle within the range limited by the oblong connecting hole.

[0018] Specifically, the handle device has a first state of opening the fireproof smoke exhaust valve and a second state of closing the fireproof smoke exhaust valve. The driven handle rotates counterclockwise by 90° to change the handle device from the first state to the second state.

[0019] Specifically, in the first state, the line connecting the free end of the active handle to the rotation shaft is L1, the line connecting the free end of the driven handle to the rotation shaft is L2, and the angle between L and L2 is α; in the second state, the line connecting the free end of the active handle to the rotation shaft is L1', the line connecting the free end of the driven handle to the rotation shaft is L2', the angle between L1' and L2' is β, α > β, and the torsion spring is in an energy storage state.

[0020] For ease of installation, a blade spindle seat is provided above the actuator spindle. The blade spindle seat is tightly fitted onto the outer periphery of the extended end of the blade spindle, and the driven handle is fixedly connected to the blade spindle seat.

[0021] As a solution to the second technical problem, this utility model proposes a fireproof smoke exhaust valve actuator, characterized in that it uses a handle device as described in any one of the above.

[0022] Compared with existing technologies, this invention features a centering sleeve between the connector and the torsion spring. Since the inner diameter of the torsion spring is larger than that of the connector, the centering sleeve helps to center the inner diameter of the torsion spring. When the torsion spring is fitted onto the connector, the centering sleeve fills the gap between the inner diameter of the torsion spring and the connector, making the position of the torsion spring on the connector more stable. This ensures that the torsion spring will not shift due to uneven force during operation, and that the central axis of the torsion spring is basically coincident with the central axis of the centering sleeve, preventing deviations in the fit between the torsion spring and other components. Both the torsion spring and the centering sleeve are positioned above the driven handle. Compared with existing technologies that place the torsion spring between the driven and driven handles, this improved design significantly reduces installation difficulty. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of an embodiment of the present invention in its first state;

[0024] Figure 2 This is a schematic diagram of an embodiment of the present invention in the second state;

[0025] Figure 3 This is an exploded view of an embodiment of the present utility model. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] like Figures 1-3 The figure shown is a preferred embodiment of a handle device and a fireproof smoke exhaust valve actuator using the handle device of this utility model.

[0028] The handle device in this embodiment is as follows: Figure 1As shown, it includes an actuator body 1, an actuator spindle 2, an active handle 3, a driven handle 4, and a centering connection assembly 5.

[0029] The actuator spindle 2 extends vertically through the actuator body 1 and is fitted over the blade spindle of the fire damper (not shown in the attached drawing). The upper end of the blade spindle extends beyond the actuator spindle 2. The fixed end of the active handle 3 is fitted with the actuator spindle 2, allowing the operator to control the free end of the active handle 3 to rotate around the axis of the blade spindle.

[0030] A blade spindle seat 6 is provided above the actuator spindle 2, such as... Figure 3 As shown, the blade spindle seat 6 is fitted onto the outer circumference of the extended end of the blade spindle. A locking hole 61 is formed on the circumferential surface of the blade spindle seat 6. Tightening the locking member 62 into the locking hole 61 applies tangential force, securing the blade spindle seat 6 to the extended end of the blade spindle. The driven handle 4 is positioned above the driving handle 3. Its fixed end is fitted onto the blade spindle seat 6, and its free end is driven by the driving handle 3, rotating along with it.

[0031] The centering connection assembly 5 connects the active handle 3 and the driven handle 4 together. It includes a connector 51 passing through the active handle 3 and the driven handle 4, a centering sleeve 52 sleeved around the connector 51, and a torsion spring 53 sleeved around the centering sleeve 52. The two ends of the torsion spring 53 abut against the driven handle 4 and the active handle 3 respectively, and always tend to move the active handle 3 and the driven handle 4 away from each other. For ease of installation, in this embodiment, the centering sleeve 52 and the torsion spring 53 are positioned above the driven handle 4.

[0032] Since the inner diameter of the torsion spring 53 is larger than that of the connector 51, the centering sleeve 52 can be added to center the torsion spring 53. When the torsion spring 53 is fitted onto the connector 51, the centering sleeve 52 can fill the gap between the inner diameter of the torsion spring 53 and the connector 51, making the position of the torsion spring 53 on the connector 51 more stable. This ensures that the torsion spring 53 will not shift due to uneven force during operation, and ensures that the central axis of the torsion spring 53 is basically coincident with the central axis of the centering sleeve 52, avoiding deviations in the fit between the torsion spring 53 and other components.

[0033] The active handle 3 has an oblong connecting hole 31, and the driven handle 4 has a circular connecting hole 41. A connector 51 passes through the oblong connecting hole 31 and the circular connecting hole 41, allowing the driven handle 4 to move relative to the active handle 3 within the restricted range of the oblong connecting hole 31. The connector 51 has external threads, allowing for easy adjustment of the connection height and position between the active handle 3 and the driven handle 4. A washer 54 is fitted around the outer periphery of the connector 51. A centering sleeve 52 is located below and supports the washer 54, and the upper part of the torsion spring 53 abuts against the lower part of the washer 54. The centering sleeve 52 balances the upper washer 54, preventing the torsion spring 53 from tilting when in contact with the washer 54.

[0034] In this embodiment, the centering sleeve 52 adopts the conical nut of a pull-out expansion bolt. It has an outer conical surface that gradually expands from bottom to top and an internal thread. By engaging with the external thread of the connector 51, it achieves axial pre-tightening of the driving handle 3 and the driven handle 4. During installation, the pre-tightening force can be adjusted by rotating the connector. The conical surface fits tightly with the inner hole of the torsion spring 53, ensuring the stability of the torsion spring center. At the same time, the centering sleeve 52, fitted over the connector 51, also protects the threads and prevents them from being worn by the torsion spring 53.

[0035] In addition, the centering sleeve 52 can also adopt a cylindrical structure, such as a straight cylindrical nut. When a tapered sleeve is used, its height is adjustable, but it is not convenient for users to install. However, when a straight cylindrical structure is used, the height is fixed, making it more convenient for users to install.

[0036] The handle device has a first state for opening the fireproof smoke exhaust valve (see...). Figure 1 ), and the second state that closes the fire exhaust damper (see Figure 2 The driven handle 4 is rotated 90° counterclockwise to change the handle device from the first state to the second state. The operator controls the active handle 3 to rotate 90° counterclockwise and then continues to rotate it counterclockwise by about 10° to allow the torsion spring 53 to accumulate energy. The rotation of the driven handle 4 is driven by the active handle 3, but since the driven handle 4 is fixedly connected to the blade shaft, it can only follow the active handle 3 to rotate a maximum of 90°. After rotating to the desired position, the driven handle 4 is always inclined to continue rotating counterclockwise under the action of the torsion spring 53, so it is not easy to rebound, which can ensure that the blade of the fireproof smoke exhaust valve is tightly closed and airtight.

[0037] Specifically, such as Figure 1 As shown, in the first state, the line connecting the free end of the active handle 3 to the rotation axis is L1, and the line connecting the free end of the driven handle 4 to the rotation axis is L2. The angle between L1 and L2 is α. Figure 2 As shown, in the second state, the line connecting the free end of the active handle 3 to the rotating shaft is L1', the line connecting the free end of the driven handle 4 to the rotating shaft is L2', the angle between L1' and L2' is β, α>β, and the torsion spring 53 is in an energy storage state.

Claims

1. A handle device, comprising an actuator spindle (2) for sleeving on a blade spindle of a fire damper, the upper end of the blade spindle extending out of the actuator spindle (2); a driving handle (3) having a fixed end sleeving on the actuator spindle (2) and a free end rotatable about the axis of the blade spindle; a driven handle (4) disposed above the driving handle (3) and having a fixed end sleeving on the extending end of the blade spindle and a free end driven by the driving handle (3); characterized in that further comprising a centering connecting assembly (5) including a connecting piece (51) penetratingly connecting the driving handle (3) and the driven handle (4), a centering sleeve (52) sleeving on the outer periphery of the connecting piece (51), and a torsion spring (53) sleeving on the outer periphery of the centering sleeve (52), the torsion spring (53) being disposed above the driven handle (4) and having two ends abutting against the driven handle (4) and the driving handle (3) respectively and always having a tendency to move the driving handle (3) and the driven handle (4) away from each other.

2. The handle device of claim 1, wherein The centering sleeve (52) is a tapered sleeve with gradually increasing outer diameter from bottom to top or a cylindrical structure.

3. The handle device of claim 2, wherein The connecting piece (51) has external threads, the centering sleeve (52) has internal threads, and the connecting piece (51) and the centering sleeve (52) are connected through thread cooperation.

4. The handle device of claim 3, wherein The centering sleeve (52) is cooperated with the external threads of the connecting piece (51) through the internal threads to realize axial pre-tightening of the driving handle (3) and the driven handle (4).

5. The handle device of claim 1, wherein The outer periphery of the connecting piece (51) further sleeves a gasket (54), the centering sleeve (52) is located below the gasket (54) and supports the gasket (54), and the upper part of the torsion spring (53) abuts against the lower part of the gasket (54).

6. The handle device of claim 1, wherein The driving handle (3) is provided with a waist-shaped connecting hole (31), the driven handle (4) is provided with a circular connecting hole (41), and the connecting piece (51) is disposed in the waist-shaped connecting hole (31) and the circular connecting hole (41) to enable the driven handle (4) to move relative to the driving handle (3) within the range limited by the waist-shaped connecting hole (31).

7. A handle device according to any one of claims 1 to 6, c h a r a c t e r i z e d in that The handle device has a first state for opening the fire damper and a second state for closing the fire damper, and the driven handle (4) is rotated counterclockwise by 90° to convert the handle device from the first state to the second state.

8. The handle device of claim 7, wherein In the first state, the connecting line between the free end of the driving handle (3) and the rotation axis is L1, the connecting line between the free end of the driven handle (4) and the rotation axis is L2, and the included angle between L1 and L2 is α; in the second state, the connecting line between the free end of the driving handle (3) and the rotation axis is L1', the connecting line between the free end of the driven handle (4) and the rotation axis is L2', and the included angle between L1' and L2' is β, α > β, and the torsion spring (53) is in an energy storage state.

9. The handle device of claim 8, wherein, The actuator spindle (2) is provided with a blade spindle seat (6) above, the blade spindle seat (6) is tightly sleeved on the outer periphery of the extending end of the blade spindle, and the driven handle (4) is fixedly connected with the blade spindle seat (6).

10. A fire damper smoke damper actuator characterized by, The handle device is applied to any one of claims 1-9.

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