Actuator of full-automatic fireproof smoke exhaust valve

Abstract

The utility model provides an actuator of a full-automatic fireproof smoke exhaust valve, which comprises a mounting bottom plate, a motor, a rotating cam, a first connecting rod, a second connecting rod and a switch base, and the first connecting rod is movably arranged on one side of the top of the rotating cam on the mounting bottom plate. A second connecting rod movably connected with the first connecting rod in a clamped mode is arranged on the portion, on one side of the rotating cam, of the mounting bottom plate, a movable block is connected to the portion, on one side of the mounting bottom plate, of one end of the bottom of the second connecting rod, and a switch base is arranged on the portion, on one side of the movable block, of the mounting bottom plate. And a telescopic spring is fixedly mounted at the center of the bottom of the switch groove on the switch base through a bolt. The conical rod is used for driving the conical block to enter the arc-shaped cap, the conical rod enables the arc-shaped cap to be separated from the movable block through the bottom arc-shaped face of the conical block, the telescopic spring accumulates force to reset so that the supporting column can conduct reset control on the controller, and resetting of the actuator is completed for closing control over the next smoke exhaust valve.

Description

Technical Field

[0001] The utility model relates to the technical field related to fire prevention and smoke exhaust, and in particular to an actuator for a full-automatic fire prevention and smoke exhaust valve. Background Art

[0002] Fire dampers are installed on the supply and return air ducts of ventilation and air conditioning systems. They are usually in the open state. When the gas temperature in the pipeline reaches a certain temperature during a fire, the fusible link melts and the valve automatically closes under the action of the torsion spring force. The valve can meet the requirements of fire resistance stability and fire resistance integrity within a certain period of time and acts as a smoke and fire barrier.

[0003] Most of the actuators of the existing fire dampers are manual, which makes it inconvenient to adjust the size of the valve opening, the air temperature in the pipeline cannot be monitored and controlled, and the ventilation duct cannot be automatically closed, increasing the risk of accidents. In this regard, this solution specifically proposes an actuator for a fully automatic fire and smoke exhaust damper to solve the above problems. Utility Model Content

[0004] In order to overcome the defects of the prior art, the utility model provides an actuator for a fully automatic fire and smoke exhaust damper.

[0005] To achieve the above-mentioned purpose, the technical solution of the present invention is implemented as follows: an actuator of a fully automatic fire and smoke exhaust damper, comprising a mounting base, a motor, a rotating cam, a first connecting rod, a second connecting rod and a switch base, characterized in that the motor is arranged on one side of the mounting base, the rotating cam connected to the motor is arranged on one side of the mounting base, the first connecting rod is movably arranged on the top side of the rotating cam on the mounting base, the second connecting rod movably engaged with the first connecting rod is arranged on one side of the rotating cam on the mounting base, one end of the bottom of the second connecting rod is connected to a movable block on one side of the mounting base, the switch base is arranged on one side of the movable block on the mounting base, a switch slot is provided inside the switch base, and the switch base is provided with a switch slot on the switch base. A telescopic spring is fixedly installed at the bottom center of the closing slot by a bolt, and the top of the telescopic spring is fixedly installed with a support column by a bolt, and the top of the support column is connected to a support rod movable at the top center of the switch base, and the support rod is connected to an arc-shaped cap, and a conical block is movably connected to the support rod between the switch base and the arc-shaped cap, and the conical block moves in the arc-shaped cap, and a movable hole that matches the size of the arc-shaped cap and the conical block is opened at the center of the movable block, and positioning holes are opened at both ends of the movable hole on the movable block, and a positioning spring is fixedly installed on the movable block by a bolt at the center of one end inside the positioning hole, and one end of the positioning spring is fixedly installed with a conical rod by a bolt, and the conical rod movably extends through the movable hole.

[0006] Preferably, the switch base is provided with limiting grooves at the centers of both sides of the switch slot, and the switch base is slidably connected to a limiting block in the limiting groove, and the top of the limiting block is fixedly mounted on the two ends of the support column by bolts.

[0007] Preferably, a controller is provided on the switch base at the bottom center of the switch slot, and the bottom of the support column and the controller are movably opposed to each other, and the telescopic spring movably passes through the outer periphery of the controller.

[0008] Preferably, a T-shaped connecting rod is fixedly installed on the movable block at the center of one end of the tapered rod by bolts, the T-shaped connecting rod movably passes through both sides of the outside of the movable block, and the positioning spring movably passes through the outer periphery of the T-shaped connecting rod.

[0009] Preferably, the movable block is provided with first holes that match the size of the tapered rod at both ends on a side close to the positioning hole, and the tapered rod is movably inserted into the first holes, and the movable block is provided with second holes that match the size of the T-shaped connecting rod at a side away from the positioning hole, and the T-shaped connecting rods are all movably inserted into the second holes.

[0010] Preferably, an incomplete gear is provided on one side of the rotating cam on the mounting base, and a torsion spring is provided on the mounting base at the center of the rotating cam.

[0011] Preferably, the conical rod moves on both sides of the bottom of the conical block and on both sides of the outer periphery of the arc-shaped cap.

[0012] The beneficial effects of the present invention are as follows:

[0013] The utility model is to drive a motor to rotate a cam, and the rotating cam drives the movable block on the switch base to move through the first connecting rod and the second connecting rod. When the movable block is lowered, the arc cap enters the movable hole of the movable block. The movable block continues to descend, so that the conical block enters the bottom of the arc cap cover. The movable block will lift the support column under the support rod in the switch base through the arc cap cover, so that the telescopic spring is in a state of stored force and tension. At the same time, the controller under the switch base is disengaged from the control, and the arc cap cannot be separated from the conical rod. At this time, the actuator works to close the smoke exhaust valve. When the rotating cam continues to rotate, the movable block will continue to descend in the support rod, so that the conical rod enters the bottom two sides of the conical block, and the conical rod drives the conical block to enter the arc cap cover. At this time, the conical rod passes the bottom arc surface of the conical block to separate the arc cap from the movable block, and the telescopic spring accumulates force and resets, so that the support column resets the controller, completing the reset of the actuator, waiting for the closing control of the next smoke exhaust valve, without false touch. The structure is simple and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In the attached figure:

[0015] Figure 1 This is a schematic front view of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the movable block and switch base of the utility model Figure 1 ;

[0017] Figure 3 This is a schematic diagram of the structure of the movable block and switch base of the utility model Figure 2 ;

[0018] Figure 4 This is a schematic front view of the internal structure of the movable block of the utility model.

[0019] Description of reference numerals:

[0020] 1. Mounting base; 2. Motor; 3. Rotating cam; 4. First connecting rod; 5. Second connecting rod; 6. Switch base; 61. Switch slot; 62. Telescopic spring; 63. Support column; 64. Support rod; 65. Arc cap; 66. Conical block; 67. Limiting slot; 68. Limiting block; 69. Controller; 7. Movable block; 71. Movable hole; 72. Positioning hole; 73. Positioning spring; 74. Conical rod; 75. T-shaped connecting rod; 76. First hole; 77. Second hole; 8. Incomplete gear; 9. Torsion spring. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Obviously, the embodiments described are only some embodiments of the utility model, not all embodiments. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the utility model.

[0022] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0023] In addition, "multiple" means more than two. Furthermore, the technical solutions of the various embodiments may be combined with each other, but this must be based on the premise that they can be implemented by a person of ordinary skill in the art. If the combination of technical solutions is mutually inconsistent or cannot be implemented, it shall be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0024] Example: Figure 1 — Figure 4As shown: it includes a mounting base 1, a motor 2, a rotating cam 3, a first connecting rod 4, a second connecting rod 5 and a switch base 6. The motor 2 is provided on one side of the mounting base 1. The rotating cam 3 connected to the motor 2 is provided on the mounting base 1 on one side of the motor 2. The first connecting rod 4 is movably provided on the top side of the rotating cam 3 on the mounting base 1. The second connecting rod 5 movably connected to the first connecting rod 4 is provided on one side of the rotating cam 3 on the mounting base 1. The bottom end of the second connecting rod is connected to a movable block 7 on one side of the mounting base 1. The switch base 6 is provided on one side of the movable block 7 on the mounting base 1. A switch slot 61 is opened inside the switch base 6. A telescopic spring 62 is fixedly installed on the switch base 6 at the bottom center of the switch slot 61 by bolts, and the top of the telescopic spring 62 is fixedly installed by bolts There is a support column 63, the top of the support column 63 is connected to a support rod 64 that is movable at the center of the top of the switch base 6, and the support rod 64 is connected to an arc-shaped cap 65. A conical block 66 is movably connected to the support rod 64 between the switch base 6 and the arc-shaped cap 65, and the conical block 66 is movable in the arc-shaped cap 65. A movable hole 71 that matches the size of the arc-shaped cap 65 and the conical block 66 is opened at the center of the movable block 7, and positioning holes 72 are opened at both ends of the movable hole 71 on the movable block 7. A positioning spring 73 is fixedly installed on the movable block 7 at the center of one end of the inner positioning hole 72 by bolts, and a conical rod 74 is fixedly installed at one end of the positioning spring 73 by bolts, and the conical rod 74 movably extends through the movable hole 71 to realize the control operation of the conical block and the arc-shaped cap.

[0025] See Figure 2 — Figure 4, a limit slot 67 is provided on the switch base 6 at the center of both sides of the switch slot 61, and a limit block 68 is slidably connected to the limit slot 67 on the switch base 6. The top of the limit block 68 is fixedly installed on the two ends of the support column 63 by bolts, and the limit movement is provided. A controller 69 is provided at the bottom center of the switch slot 61 on the switch base 6, and the bottom of the support column 63 and the controller 69 are movably offset. The limit movement ensures the stable operation of the controller without false touch, and the operation structure is simple and stable. The telescopic spring 62 runs through the outer periphery of the controller 69, and a T-shaped connecting rod 75 is fixedly installed on the movable block 7 at the center of one end of the tapered rod 74 by bolts. The T-shaped connecting rod 75 runs through both sides of the exterior of the movable block 7, and the positioning spring 73 runs through the T-shaped connecting rod. At the periphery of the rod 75, first holes 76 that match the size of the tapered rod 74 are opened on the movable block 7 at both ends of the side close to the positioning hole 72, and the tapered rod 74 moves through the first hole 76, through the connection, to realize the control movement of the tapered block and the arc cap, and a second hole 77 that matches the size of the T-shaped connecting rod 75 is opened on the movable block 7 at the side away from the positioning hole 72, and the T-shaped connecting rod 75 moves through the second hole 77, through the support, and drives the tapered rod to move back and forth. An incomplete gear 8 is provided on one side of the rotating cam 3 on the mounting base 1, and a torsion spring 9 is provided at the center of the rotating cam 3 on the mounting base 1. The tapered rod 74 moves on both sides of the bottom of the tapered block 66 and on both sides of the periphery of the arc cap 65 to control the bottom controller.

[0026] When the cam is in use, the motor drives the rotating cam to rotate, and the rotating cam drives the movable block on the switch base to move through the first connecting rod and the second connecting rod. When the movable block falls, the arc cap enters the movable hole of the movable block. The movable block continues to fall, so that the conical block enters the bottom of the arc cap. The movable block will lift the support column under the support rod in the switch base through the arc cap, so that the telescopic spring is in a state of stored force and stretching. At the same time, the controller under the switch base is out of control, and the arc cap cannot be separated from the conical rod. At this time, the actuator works to close the smoke exhaust valve. When the rotating cam continues to rotate, the movable block will continue to fall in the support rod, so that the conical rod enters the bottom two sides of the conical block, and the conical rod is used to drive the conical block to enter the arc cap. At this time, the conical rod passes through the bottom arc surface of the conical block to separate the arc cap from the movable block, and the telescopic spring is reset to enable the support column to reset the controller, completing the reset of the actuator, waiting for the next smoke exhaust valve closing control, without false touch, and the structure is simple and stable.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An actuator for a fully automatic fire and smoke exhaust damper, comprising a mounting base (1), a motor (2), a rotating cam (3), a first connecting rod (4), a second connecting rod (5) and a switch base (6), characterized in that: The motor (2) is provided on one side of the mounting base (1), the rotating cam (3) connected to the motor (2) is provided on the mounting base (1) on one side of the motor (2), the first connecting rod (4) is movably provided on the mounting base (1) on the top side of the rotating cam (3), the second connecting rod (5) movably engaged with the first connecting rod (4) is provided on the mounting base (1) on one side of the rotating cam (3), the bottom end of the second connecting rod is connected to a movable block (7) on one side of the mounting base (1), the switch base (6) is provided on the mounting base (1) on one side of the movable block (7), a switch slot (61) is provided inside the switch base (6), a telescopic spring (62) is fixedly installed at the bottom center of the switch slot (61) on the switch base (6) by bolts, the top of the telescopic spring (62) is fixedly installed with a support column (63) by bolts, the The top end of the support column (63) is connected to a support rod (64) that is movable at the center of the top of the switch base (6), and the support rod (64) is connected to an arc-shaped cap (65). A conical block (66) is movably connected to the support rod (64) between the switch base (6) and the arc-shaped cap (65), and the conical block (66) is movable in the arc-shaped cap (65). The center of the movable block (7) is provided with a connection between the arc-shaped cap (65) and the movable block (7). The movable hole (71) is of the same size as the conical block (66), and positioning holes (72) are provided on the movable block (7) at both ends of the movable hole (71). A positioning spring (73) is fixedly installed on the movable block (7) at the center of one end inside the positioning hole (72) by means of bolts, and a conical rod (74) is fixedly installed at one end of the positioning spring (73) by means of bolts, and the conical rod (74) is movably extended through the movable hole (71).

2. The actuator of a fully automatic fire smoke exhaust damper according to claim 1, characterized in that: The switch base (6) is provided with limiting grooves (67) at the centers of both sides of the switch slot (61), and the switch base (6) is slidably connected to a limiting block (68) in the limiting groove (67), and the top end of the limiting block (68) is fixedly mounted on the two ends of the support column (63) by bolts.

3. The actuator of a fully automatic fire smoke exhaust damper according to claim 1, characterized in that: A controller (69) is provided on the switch base (6) at the bottom center of the switch slot (61), and the bottom of the support column (63) and the controller (69) are movable against each other, and the telescopic spring (62) is movable through the outer periphery of the controller (69).

4. The actuator of a fully automatic fire smoke exhaust damper according to claim 1, characterized in that: A T-shaped connecting rod (75) is fixedly mounted on the movable block (7) at the center of one end of the tapered rod (74) by means of bolts. The T-shaped connecting rod (75) movably passes through both sides of the exterior of the movable block (7), and the positioning spring (73) movably passes through the outer periphery of the T-shaped connecting rod (75).

5. The actuator of a fully automatic fire smoke exhaust damper according to claim 4, characterized in that: The movable block (7) is provided with first holes (76) at both ends of a side close to the positioning hole (72) and matching the size of the tapered rod (74), and the tapered rod (74) is movable through the first holes (76). The movable block (7) is provided with second holes (77) at a side away from the positioning hole (72) and matching the size of the T-shaped connecting rod (75), and the T-shaped connecting rod (75) is movable through the second holes (77).

6. The actuator of a fully automatic fire and smoke exhaust damper according to claim 1, characterized in that: An incomplete gear (8) is provided on the mounting base plate (1) at one side of the rotating cam (3), and a torsion spring (9) is provided on the mounting base plate (1) at the center of the rotating cam (3).

7. The actuator of a fully automatic fire and smoke exhaust damper according to claim 1, characterized in that: The conical rod (74) moves on both sides of the bottom of the conical block (66) and on both sides of the outer periphery of the arc-shaped cap (65).

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