Electric fire and smoke exhaust valve series, remote and close-range control actuators

Abstract

The present invention discloses a remote and near-distance control actuator for an electric fire and smoke exhaust valve series, which comprises a bottom plate, a frame, a cover plate and a double-layer structure composed of upper and lower layers arranged on the bottom plate; the upper-layer structure comprises a steel wire rope (2), a gear groove rod (3), a gear limit piece (4) and an extended force arm rod (5); the lower-layer structure comprises a blade-shaped lever (6), a small lever (7), a driving device (8), a rod groove bracket (9), an impact rod (10), a manual reset rod (11) and an impact spring (13). When in near-distance control: the other end of the steel wire rope (2) is connected to a spindle extended force arm rod sleeve (1) installed on the main shaft of the valve body; when in remote control: the other end of the steel wire rope (2) is directly connected to the valve body. The present invention adopts a double-layer design, finally making it a control actuator with a small volume and a large decoupling release force, and capable of realizing the functions of both remote and near-distance control.

Description

Technical Field

[0001] The present invention belongs to the field of mechanical control, and particularly relates to a remote and near-distance control actuator for an electric fire and smoke damper series, which is used for remotely and near-distantly actuating and controlling the opening and closing of a fire damper series and multi-leaf smoke vents and air supply vents installed in air-conditioning and ventilation systems. Background Art

[0002] With the development of the national economy and the increasingly fierce competition in the construction industry market, users' requirements for the quality of the products they purchase are constantly increasing. In order to win a place in the market, each manufacturing enterprise has to continuously explore and create new methods and technologies to improve product quality, and at the same time, it can also save energy and reduce production costs to provide customers with good products with high quality and low price. At present, although the remote and near-distance control actuators of the electric fire (smoke) damper series have been improved several times over the years and their performance has been continuously enhanced, there have been no significant changes in the product volume, internal structure, and electromagnet power.

[0003] The existing near-distance actuators of the electric fire damper series have the following disadvantages: First, the force-saving lever and the valve body main shaft lever work in a rigid fit. When the valve body is opened and closed, it generates a large impact on the control actuator, which easily causes the control actuator and the internal structure to become loose, resulting in unstable performance and operation. Second, the reset is laborious, and the internal force-saving device has a single structure. Therefore, an electromagnet with a large power needs to be assembled, which results in a large size of the control actuator. The size of the control actuator determines the thickness of the electric fire (smoke) damper series products. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a remote and near-distance control actuator for an electric fire and smoke damper series. The internal structure is designed in a double-layer manner, and the lever principle is used to continuously and reasonably increase the force-saving device so that the actuator control mechanism can be equipped with a small-power electromagnet, reducing the volume of the actuator and saving costs. The actuator and the valve body main shaft are connected by a steel wire rope, making the reset of the actuator control mechanism easy, the hook release performance stable, and no impact on the control actuator when the valve body is opened and closed.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] Electric fire and smoke exhaust valve series remote and close-range control actuators, including a bottom plate, a frame, a cover plate, and a double-layer structure composed of upper and lower layers arranged on the bottom plate; the upper-layer structure includes a steel wire rope, a gear groove rod, a gear limit piece, and an extended force arm rod. One end of the steel wire rope is connected to the gear groove rod installed on the bottom plate. The gear limit piece and the extended force arm rod are coaxially installed on the bottom plate struts respectively and are each provided with a torsion spring. And the gear limit piece is driven by the extended force arm rod to swing up and down. The other end of the gear limit piece cooperates with the gear groove rod to perform limiting and releasing actions on the gear groove rod; the lower-layer structure includes a blade-shaped lever, a small lever, a driving device, a rod groove bracket, an impact rod, a manual reset rod, and an impact spring. The blade-shaped lever is installed on a strut of the bottom plate and is provided with a torsion spring, and one end of it cooperates with a small lever with a limit groove installed on another strut of the bottom plate. The driving device is installed on the bottom plate and is connected to the end of the small lever, and a spring is provided at the connection. A limit card slot is provided at the other end of the blade-shaped lever. The impact rod is movably installed on the bottom plate through the rod groove bracket. The impact spring is sleeved on the impact rod. The upper end of the impact rod is vertically matched with the limit card slot of the blade-shaped lever. The manual reset rod is arranged at the front end of the impact rod. A protrusion is provided at the end of the extended force arm rod in the direction of the lower-layer structure. The lower end of the impact rod cooperates with the protrusion to drive the extended force arm rod to swing up and down;

[0007] When in close-range control: the other end of the steel wire rope is connected to a main shaft extended force arm rod sleeve installed on the main shaft of the valve body;

[0008] When in remote control: the other end of the steel wire rope is directly connected to the valve body, that is, the valve body is directly connected to the gear groove rod through the steel wire rope.

[0009] Preferably, the driving device is an electromagnet.

[0010] Preferably, when in remote control, a deceleration piece is further installed on the notch of the gear groove and is provided with a torsion spring to prevent the gear groove rod from rotating and releasing too fast when the valve body resets, preventing the steel wire rope from jumping out of the gear groove.

[0011] Preferably, the limit card slot on the blade-shaped lever is an arc structure.

[0012] Preferably, the rod groove bracket is divided into upper and lower parts. The impact rod passes through it. A stop block is provided on the impact rod in the middle of the rod groove bracket to prevent the impact rod from coming out of the rod groove bracket. The impact spring is limited between the upper section of the rod groove bracket and the stop block.

[0013] Preferably, a manual release rod is further provided at the end of the small lever for when manual operation is needed, to push the small lever to release by replacing the driving device and pushing backward.

[0014] Both the manual release lever and the manual reset lever protrude from the cover plate.

[0015] Due to the adoption of the above technical solution, the present invention has the following technical effects:

[0016] The electric fire and smoke damper series of remote and near control actuators of the present invention adopt a double-layer design, with an additional labor-saving device added, which greatly saves labor compared with the traditional structure; it only requires a small-power driving device to be assembled, which can greatly reduce the external shape volume of the actuator. The reduction of the external shape volume of the actuator can also change the thickness of the valve body, thereby achieving the purpose of energy conservation and consumption reduction. Therefore, it finally becomes a control actuator with a small volume and a large decoupling release force, and can realize the functions of remote and near control, avoiding waste of repeated investment, with strong practicability, and especially has the following advantages:

[0017] 1. By using the ratio of the extended force arm rod sleeve of the main shaft and the radius of the gear groove rod, labor is saved, making the electric operation more labor-saving and the manual reset easier;

[0018] 2. The flexible connection of the valve body main shaft by the steel wire rope avoids the problem that the impact of the torque of the valve body main shaft on the actuator during the opening and closing of the actuator causes the loosening of screws and components, thereby affecting the performance of the actuator;

[0019] 3. By adding an impact rod, a greater impact force is obtained by using the acceleration of the impact spring to decouple, which is more stable than directly using the electromagnetic force of the electromagnet to decouple in the original technology;

[0020] 4. When controlling remotely, adding a deceleration piece prevents the problem that the steel wire rope may jump out of the gear groove when the gear groove rod rotates too fast during the reset of the valve body. Description of the Drawings

[0021] The present invention will be described by way of examples and with reference to the accompanying drawings, where:

[0022] Figure 1 is a schematic structural diagram of the near control reset state of the embodiment of the present invention;

[0023] Figure 2 is a schematic structural diagram of the near control release state of the embodiment of the present invention;

[0024] Figure 3 is a schematic structural diagram of the remote control reset state of the embodiment of the present invention. Detailed Embodiments

[0025] All the features disclosed in this specification, or all the steps in any method or process disclosed, except for mutually exclusive features and / or steps, can be combined in any manner.

[0026] Any feature disclosed in this specification, unless specifically described, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically described, each feature is just an example in a series of equivalent or similar features.

[0027] As Figures 1-3 shown, an electric fire and smoke exhaust valve series remote and near-distance control actuator, comprising a bottom plate, a frame, a cover plate, and a double-layer structure composed of upper and lower layers arranged on the bottom plate; the upper-layer structure includes a steel wire rope 2, a gear groove rod 3, a gear limit piece 4, and an extended force arm rod 5. One end of the steel wire rope 2 is connected to the gear groove rod 3 installed on the bottom plate. The gear limit piece 4 and the extended force arm rod 5 are coaxially installed on the bottom plate pillars respectively and are each provided with a torsion spring. And the gear limit piece 4 is driven by the extended force arm rod 5 to swing up and down. The other end of the gear limit piece 4 cooperates with the gear groove rod 3 to perform a limiting and releasing action on the gear groove rod 3; the lower-layer structure includes a blade-shaped lever 6, a small lever 7, a driving device 8, a rod groove bracket 9, an impact rod 10, a manual reset rod 11, and an impact spring 13. The blade-shaped lever 6 is installed on a pillar of the bottom plate and is provided with a torsion spring, and one end of it cooperates with the small lever 7 with a limit groove installed on another pillar of the bottom plate. The driving device 8 is installed on the bottom plate and is connected to the end of the small lever 7, and a spring is provided at the connection. A limit card slot is provided at the other end of the blade-shaped lever 6. The impact rod 10 is movably installed on the bottom plate through the rod groove bracket 9. The impact spring 13 is sleeved on the impact rod 10. The upper end of the impact rod 10 is vertically matched with the limit card slot of the blade-shaped lever 6. The manual reset rod 11 is arranged at the front end of the impact rod 10. A protrusion is provided at the end of the extended force arm rod 5 in the direction of the lower-layer structure. The lower end of the impact rod 10 cooperates with the protrusion to drive the extended force arm rod 5 to swing up and down;

[0028] When controlling at a short distance: The other end of the steel wire rope 2 is connected to a main shaft extended force arm rod sleeve 1 installed on the main shaft of the valve body;

[0029] When controlling at a long distance: The other end of the steel wire rope 2 is directly connected to the valve body, that is, the valve body is directly connected to the gear groove rod 3 through the steel wire rope.

[0030] The driving device 8 is an electromagnet.

[0031] When controlling at a long distance, a deceleration piece 12 is additionally installed on the notch of the gear groove 3 and is provided with a torsion spring to prevent the gear groove rod 3 from rotating and releasing too fast when the valve body resets, preventing the steel wire rope 2 from jumping out of the gear groove.

[0032] The limit card slot on the blade-shaped lever 6 is an arc structure.

[0033] The rod groove bracket 9 is divided into upper and lower parts, and the impact rod 10 passes through it. In the middle of the rod groove bracket 9 and on the impact rod 10, a stop block is provided to prevent the impact rod 10 from disengaging from the rod groove bracket 9. The impact spring 13 is limited between the upper section of the rod groove bracket 9 and the stop block.

[0034] At the end of the small lever 7, a manual release lever 14 is further provided, which is used to, when manual operation is required, push backward to replace the driving device to release the small lever 7.

[0035] Both the manual release lever 14 and the manual reset lever 11 protrude from the cover plate.

[0036] The working principle is as follows:

[0037] 1. When resetting, opening or closing the electric fire damper at close range, two resets are required. For the first time, the manual reset lever (11) is pushed upward, driving the impact rod (10) to move upward. When the blade-shaped lever (6) is pushed to a parallel state, at the same time, under the spring force of the electromagnet on the small lever (7), the front end of the blade-shaped lever (6) is limited in the limit groove of the small lever (7), and the rear end locks the impact rod (10). The impact spring (13) on the impact rod (10) is also compressed to the saturation state. After the impact rod (10) moves upward, the extended force arm rod (5) gets out of the limit. Under the action of the torsion spring, it drives the gear limit piece (4) and the gear groove rod (3) installed coaxially to resume the limit working state; after the first manual reset is completed, the second fire damper body reset procedure is entered. Use an Allen wrench to rotate the gear groove rod (3) counterclockwise to retract the steel wire rope (2), driving the main shaft extended force arm rod sleeve (1) to rotate until the valve body is closed or opened. Thus, the second reset is completed. When the electric fire damper needs to open or close, the electric working conditions are as follows: when the electromagnet is energized and retracts, driving the small lever (7) to retract and release the front-end limit of the blade-shaped lever (6). The rear end of the blade-shaped lever (6) moves downward under the action of the impact spring (13) and also releases the limit on the impact rod (10). The impact rod (10) instantaneously rebounds under the action of the impact spring (13) and impacts the convex block on the extended force arm rod (5). The extended force arm rod (5) moves downward, driving the gear limit piece (4) to move downward, causing the gear groove rod (3) to disengage from the limit. The steel wire rope (2) is released under the action of the self-torsion of the valve body, and the valve body is closed or opened.

[0038] 2. When resetting, opening or closing the electric fire damper at a long distance, the operation method is the same as that for close control. The difference is that when resetting, the valve body is directly connected through the steel wire rope (2) and the gear groove rod (3).

[0039] The present invention is not limited to the foregoing specific embodiments. The present invention extends to any new feature or any new combination disclosed in this specification, as well as any new method or process step or any new combination disclosed.

Claims

1. Electric fire and smoke exhaust valve series remote and close-range control actuators, characterized in that, It includes a bottom plate, a frame, a cover plate, and a double-layer structure composed of upper and lower layers arranged on the bottom plate; the upper-layer structure includes a steel wire rope (2), a gear groove rod (3), a gear limit piece (4), and an extended force arm rod (5). One end of the steel wire rope (2) is connected to the gear groove rod (3) installed on the bottom plate. The gear limit piece (4) and the extended force arm rod (5) are coaxially installed on the bottom plate support columns respectively and are each provided with a torsion spring. The gear limit piece (4) is driven by the extended force arm rod (5) to swing up and down. The other end of the gear limit piece (4) cooperates with the gear groove rod (3) to perform a limiting and releasing action on the gear groove rod (3); the lower-layer structure includes a blade-shaped lever (6), a small lever (7), a driving device (8), a rod groove bracket (9), an impact rod (10), a manual reset rod (11), and an impact spring (13). The blade-shaped lever (6) is installed on a support column of the bottom plate and is provided with a torsion spring. One end of it cooperates with the small lever (7) with a limit groove installed on another support column of the bottom plate. The driving device (8) is installed on the bottom plate and is connected to the end of the small lever (7), and a spring is provided at the connection. A limit card slot is provided at the other end of the blade-shaped lever (6). The impact rod (10) is movably installed on the bottom plate through the rod groove bracket (9). The impact spring (13) is sleeved on the impact rod (10). The upper end of the impact rod (10) is vertically matched with the limit card slot of the blade-shaped lever (6). The manual reset rod (11) is arranged at the front end of the impact rod (10). A protrusion is provided at the end of the extended force arm rod (5) in the direction of the lower-layer structure. The lower end of the impact rod (10) cooperates with the protrusion to drive the extended force arm rod (5) to swing up and down; When controlling at close range: The other end of the steel wire rope (2) is connected to a main shaft extended force arm rod sleeve (1) installed on the valve body main shaft; When controlling at a long distance: The other end of the steel wire rope (2) is directly connected to the valve body, that is, the valve body is directly connected to the gear groove rod (3) through the steel wire rope; When controlling at a long distance, a deceleration piece (12) is additionally installed on the notch of the gear groove rod (3) and is provided with a torsion spring; The rod groove bracket (9) is divided into upper and lower parts. The impact rod (10) passes through it. A stop block is provided on the impact rod (10) in the middle of the rod groove bracket (9) to prevent the impact rod (10) from coming out of the rod groove bracket (9). The impact spring (13) is limited between the upper section of the rod groove bracket (9) and the stop block; A manual release rod (14) is further provided at the end of the small lever (7).

2. The remote and near-distance control actuator for the electric fire and smoke exhaust valve series according to claim 1, characterized in that The driving device (8) is an electromagnet.

3. The far and near control actuators for the electric fire and smoke exhaust valve series according to claim 1, characterized in that, The limit card slot on the blade-shaped lever (6) is an arc structure.

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