Fireproof smoke exhaust valve for ventilation air conditioner

Abstract

The utility model provides a fireproof smoke exhaust valve for a ventilation air conditioner, which relates to the technical field of ventilation air conditioner accessories and comprises a positioning frame, a first valve plate and a second valve plate are mounted on the inner side of the positioning frame, a stable shell is mounted above the positioning frame, and a sealing cover is mounted above the stable shell. And a group of actuating mechanisms are arranged between the stable shell and the positioning frame. The novel fireproof smoke exhaust valve is composed of the positioning frame, the first valve plate, the second valve plate and the executing mechanism, the electromagnet, the rack, the iron sheet and the gear are arranged on the basis of the first valve plate, the driving frame and the spring are arranged on the basis of the second valve plate, when the electromagnet is powered on, the iron sheet can be attracted, and at the moment, the rack is stressed to move; when the rack moves, the gear above the second rotating shaft can be driven to rotate, meanwhile, the first valve plate and the second valve plate are quickly closed under the supporting force of the spring, and the actuating mechanism is simple in structure and sensitive in braking.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation and air-conditioning accessories, in particular to a fireproof smoke exhaust valve for ventilation and air-conditioning. Background Art

[0002] In ventilation and air conditioning systems, fire and smoke exhaust dampers play a vital role. When a fire occurs, the fire and smoke exhaust dampers can be closed in time to prevent the spread of fire and smoke through the ventilation ducts, buying valuable time for personnel evacuation and fire fighting. However, existing fire and smoke exhaust dampers for ventilation and air conditioning have some shortcomings as follows:

[0003] First of all, the actuator of the fire smoke exhaust damper has the defect of complex structure, which increases the overall cost and has the defect of slow response speed. In addition, the actuator needs to be connected to the valve plate with the help of wire rope. The connection of the wire rope is easy to loosen, which can easily cause a gap in the valve plate after closing, resulting in low reliability of the fire smoke exhaust damper and smoke spreading inside the pipe. Therefore, it is necessary to design a new type of fire smoke exhaust damper for ventilation and air conditioning to improve the safety and reliability of the ventilation and air conditioning system. Utility Model Content

[0004] The utility model discloses a fireproof smoke exhaust damper for ventilation and air conditioning. When a fire occurs, a temperature sensor transmits a signal to an electromagnet, and the electromagnet is energized. At this time, the electromagnet can adsorb an iron sheet when energized, and a rack moves under force to drive a second rotating shaft to rotate. At the same time, the first valve sheet and the second valve sheet are quickly closed by the support force of a spring, and the first electric motor drives the bidirectional threaded rod to rotate. When the two pressing plates move inward, they can press the ends of the first valve sheet and the second valve sheet to prevent the spread of fire and smoke.

[0005] According to a first aspect of the present disclosure, a fireproof smoke exhaust damper for ventilation and air conditioning is provided, which specifically includes: a positioning frame, a first valve plate and a second valve plate are installed on the inner side of the positioning frame, a stable shell is installed above the positioning frame, a sealing cover is installed above the stable shell, a group of actuators are installed between the stable shell and the positioning frame, the actuators are composed of an electromagnet, a rack, an iron sheet and a drive frame, a spring is installed between the drive frame and the positioning frame, the electromagnet, the rack and the iron sheet are installed on the inner side of the stable shell, and a group of reinforcement mechanisms are installed on the outer side of the positioning frame, the reinforcement mechanism is composed of a first electric motor, a bidirectional threaded rod and a pressing plate.

[0006] Furthermore, a group of rotating holes are respectively opened at the upper and lower positions of the positioning frame, a bearing is installed at the outer position of the rotating hole, a first rotating shaft is provided in the middle position of the first valve plate, and a second rotating shaft is provided in the middle position of the second valve plate. The first rotating shaft and the second rotating shaft respectively pass through the inside of the bearings, and the bottom of the driving frame is firmly connected to the first rotating shaft.

[0007] Furthermore, a synchronous pulley is installed at the bottom of each of the first rotating shaft and the second rotating shaft, and a synchronous belt is installed between the two synchronous pulleys.

[0008] Furthermore, a positioning plate is provided on the inner side of the stable shell, an electromagnet is installed on the inner side of the positioning plate, a transverse sliding hole is opened on the outer side of the positioning plate, a positioning rod is provided on one side of the rack, and the positioning rod passes through the inside of the sliding hole.

[0009] Furthermore, a gear is installed above the second rotating shaft, the gear and the rack are meshed, a fitting plate is provided on one side of the rack, an iron sheet is installed on the outer side of the fitting plate, and a hexagonal slot is opened above the second rotating shaft, and the hexagonal slot is used to connect the corresponding hexagonal wrench.

[0010] Furthermore, a stabilizing plate is provided above the positioning frame, a first electric motor is installed above the stabilizing plate, a driving bevel gear is installed at the bottom of the driving shaft of the first electric motor, and a driven bevel gear is installed at the outer side of the bidirectional threaded rod, and the driving bevel gear and the driven bevel gear are meshed.

[0011] Furthermore, two horizontal rotating holes are opened at the upper position of the positioning frame, the bidirectional threaded rod passes through the interior of the rotating hole, a pressing plate is installed on both sides of the bidirectional threaded rod, and a threaded hole with opposite spiral directions is opened above the pressing plate, the bidirectional threaded rod passes through the interior of the threaded hole, a sliding hole is opened on both sides of the positioning frame, and the pressing plate extends to the interior of the sliding hole.

[0012] The utility model provides a fireproof smoke exhaust damper for ventilation and air conditioning, which has the following beneficial effects:

[0013] A positioning frame, a first valve plate, a second valve plate, and an actuator are provided to form a new type of fire and smoke exhaust damper. The specific beneficial effects are as follows:

[0014] A synchronous belt linkage is set between the first valve plate and the second valve plate, so that the first valve plate and the second valve plate can be opened and closed synchronously;

[0015] An electromagnet, a rack, an iron sheet, and a gear are set on the basis of the first valve sheet, and a drive frame and a spring are set on the basis of the second valve sheet. When the electromagnet is energized, it can adsorb the iron sheet. At this time, the rack moves under the force. When the rack moves, it can drive the gear above the second rotating shaft to rotate. At the same time, the first valve sheet and the second valve sheet are quickly closed by the support force of the spring. The setting structure of the actuator is simple and the braking is sensitive.

[0016] A reinforcement mechanism is set on the basis of the first valve disc and the second valve disc. The reinforcement mechanism includes a first electric motor, a bidirectional threaded rod, and a pressing plate. The first electric motor cooperates with the bidirectional threaded rod to drive the two pressing plates to move synchronously in opposite directions. When the two pressing plates move inward, they can press the ends of the first valve disc and the second valve disc, making the first valve disc and the second valve disc more stable after closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below.

[0018] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0019] In the attached figure:

[0020] Figure 1 It shows the axle side structure schematic diagram of the fire smoke exhaust damper of the present application after opening;

[0021] Figure 2 It shows a schematic diagram of the shaft side structure of the fire smoke exhaust damper of the present application after closing;

[0022] Figure 3 Shows the application Figure 2 Schematic diagram of the axle side structure from a rear perspective;

[0023] Figure 4 A schematic diagram of the partial axial structure of the fire smoke exhaust damper of the present application after sectioning is shown;

[0024] Figure 5 An axial schematic diagram of a cutaway structure of a positioning frame of the present application is shown;

[0025] Figure 6 An axial schematic diagram of the split structure of the fire smoke exhaust damper of the present application is shown;

[0026] Figure 7 Shows the application Figure 3 A schematic diagram of the enlarged structure.

[0027] Reference Signs List

[0028] 1. Positioning framework;

[0029] 2. First valve disc; 201. First rotating shaft;

[0030] 3. Second valve disc; 301. Second rotating shaft;

[0031] 4. Actuator; 401. Electromagnet; 402. Rack; 403. Iron sheet; 404. Drive frame;

[0032] 5. Reinforcement mechanism; 501. First electric motor; 502. Bidirectional threaded rod; 503. Pressing plate;

[0033] 6. Stabilize the shell. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example 1: Please refer to Figures 1 to 7 :

[0036] The utility model proposes a fireproof smoke exhaust damper for ventilation and air conditioning, comprising: a positioning frame 1, a first valve disc 2 and a second valve disc 3 are installed at the inner position of the positioning frame 1, a group of rotation holes are respectively opened at the upper and lower positions of the positioning frame 1, a bearing is installed at the outer position of the rotation hole, a first rotating shaft 201 is provided at the middle position of the first valve disc 2, a second rotating shaft 301 is provided at the middle position of the second valve disc 3, the first rotating shaft 201 and the second rotating shaft 301 respectively pass through the interior of the bearings, the rotating holes achieve the effect of stable rotation of the first rotating shaft 201 and the second rotating shaft 301, and the bottom of the driving frame 404 is firmly connected to the first rotating shaft 201;

[0037] In the embodiments of the present disclosure, reference Figures 1 to 7As shown, after the first valve disc 2 and the second valve disc 3 are closed, the fire source can be isolated. A synchronous pulley is respectively installed at the bottom position of the first rotating shaft 201 and the second rotating shaft 301, and a synchronous belt is installed between the two synchronous pulleys. Therefore, when the first valve disc 2 rotates, the second valve disc 3 can be driven to rotate, which solves the problem that the first valve disc 2 and the second valve disc 3 are currently connected by a wire rope, and realizes the effect of convenient assembly of the transmission structure between the first valve disc 2 and the second valve disc 3. A gear is installed at the upper position of the second rotating shaft 301, and the gear and the rack 402 are meshed. A bonding plate is provided on one side of the rack 402, and an iron sheet 403 is installed at the outer position of the bonding plate. Glue is filled between the iron sheet 403 and the bonding plate to firmly splice them. In addition, the iron sheet 403 and the bonding plate can also be welded to firmly secure them. When the electromagnet 401 is energized, the iron sheet 403 can be adsorbed. At this time, the rack 402 is forced to move, and the movement of the rack 402 can drive the second valve disc 2 and the second valve disc 3 to rotate. The gears above the second rotating shaft 301 rotate, and at the same time, the first valve disc 2 and the second valve disc 3 are quickly closed by the support force of the spring. The setting structure of the actuator 4 is simple and the braking is sensitive. A hexagonal slot is provided at the upper position of the second rotating shaft 301, and the hexagonal slot is used to connect the corresponding hexagonal wrench. The second rotating shaft 301 is driven to rotate with the help of the hexagonal wrench to achieve the effect of manual adjustment of the actuator 4, the first valve disc 2, and the second valve disc 3. A stable shell 6 is installed at the upper position of the positioning frame 1, and a positioning plate is provided at the inner position of the stable shell 6. An electromagnet 401 is installed at the inner position of the positioning plate. The positioning plate achieves the effect of stable installation position of the electromagnet 401, and a horizontal sliding hole is provided at the outer side surface of the positioning plate. A positioning rod is provided on one side of the rack 402, and the positioning rod passes through the inside of the sliding hole. The positioning rod achieves the effect of positioning the moving position of the rack 402, so that the rack 402 can move stably laterally when subjected to force;

[0038] In the embodiments of the present disclosure, reference Figures 1 to 7As shown, a sealing cover is installed at the upper position of the stable shell 6, and a group of actuators 4 are installed between the stable shell 6 and the positioning frame 1. The actuator 4 is composed of an electromagnet 401, a rack 402, an iron sheet 403 and a drive frame 404. A spring is installed between the drive frame 404 and the positioning frame 1, and the force of the spring is set to be sufficient to push the first valve plate 2 and the second valve plate 3 to close. The electromagnet 401, the rack 402, and the iron sheet 403 are installed at the inner position of the stable shell 6, and a group of reinforcement mechanisms 5 are installed at the outer position of the positioning frame 1. The reinforcement mechanism 5 is composed of a first electric motor 501, a bidirectional threaded rod 502 and a pressing plate 503. A stable plate is provided at the upper position of the positioning frame 1, and a first electric motor 501 is installed at the upper position of the stable plate. The first electric motor 501 is fixed to the upper position of the stable plate with bolts. A driving bevel gear is installed at the bottom position of the drive shaft of the first electric motor 501. The bidirectional threaded rod 502 The two pressing plates 503 are pressed against the top of the first and second valve discs 2 and 3 respectively.

[0039] Example 2, based on Example 1, refer to Figures 1 to 7 As shown, a temperature sensor commonly used in existing fire smoke exhaust valves needs to be installed above the positioning frame 1, and the temperature sensor and electromagnet 401 are electrically connected. The temperature sensor can quickly respond to temperature changes in the ventilation channel. When a fire occurs, the temperature sensor transmits a signal to the electromagnet 401, and the electromagnet 401 is energized.

[0040] Example 3, based on Example 1, refer to Figures 1 to 7 As shown, a control module needs to be provided between the electromagnet 401 and the first electric motor 501 , and the first electric motor 501 is started when the electromagnet 401 is energized.

[0041] The working principle of this embodiment is as follows:

[0042] When installing the fire smoke damper, first install a first valve disc 2 and a second valve disc 3 on the inner side of the positioning frame 1, and position the first valve disc 2 and the second valve disc 3 in conjunction with the first rotating shaft 201 and the second rotating shaft 301, and install a stable shell 6 on the upper position of the positioning frame 1, then install the electromagnet 401, the rack 402, and the iron sheet 403 on the inner side of the stable shell 6 for positioning, and install a sealing cover on the upper position of the stable shell 6, and then install a driving frame 404 on the upper side of the positioning frame 1, connect the bottom of the driving frame 404 to the first rotating shaft 201, install a spring between the driving frame 404 and the positioning frame 1, and then install a group of reinforcement mechanisms 5 on the outer side of the positioning frame 1;

[0043] When using the fireproof smoke exhaust damper, the fireproof smoke exhaust damper is installed in the protective position of the ventilation and air conditioning together with the positioning frame 1. When a fire occurs, the temperature sensor transmits a signal to the electromagnet 401, and the electromagnet 401 is energized. At this time, the electromagnet 401 can adsorb the iron sheet 403 when it is energized. At this time, the rack 402 is forced to move, and when the rack 402 moves, it can drive the gear above the second rotating shaft 301 to rotate. At the same time, the first valve plate 2 and the second valve plate 3 are quickly closed due to the support force of the spring. Then the first electric motor 501 can drive the bidirectional threaded rod 502 to rotate. When the two pressing plates 503 move inward, they can press the ends of the first valve plate 2 and the second valve plate 3 to prevent the spread of fire and smoke.

[0044] In this article, there are several points to note:

[0045] 1. The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure. Other structures may refer to conventional designs.

[0046] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to form new embodiments.

[0047] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A fireproof smoke exhaust damper for ventilation and air conditioning, comprising: A positioning frame (1), a first valve disc (2) and an actuator (4), wherein a first valve disc (2) and a second valve disc (3) are installed at the inner side of the positioning frame (1), a stable shell (6) is installed at the upper side of the positioning frame (1), a sealing cover is installed at the upper side of the stable shell (6), and a group of actuators (4) are installed between the stable shell (6) and the positioning frame (1), characterized in that the actuator (4) is composed of an electromagnet (401), a rack (402), an iron sheet (403) and a driving frame (404), a spring is installed between the driving frame (404) and the positioning frame (1), the electromagnet (401), the rack (402) and the iron sheet (403) are installed at the inner side of the stable shell (6), and a group of reinforcement mechanisms (5) are installed at the outer side of the positioning frame (1), and the reinforcement mechanism (5) is composed of a first electric motor (501), a bidirectional threaded rod (502) and a pressing plate (503).

2. A fireproof smoke exhaust damper for ventilation and air conditioning according to claim 1, characterized in that: A group of rotating holes are respectively provided at the upper and lower positions of the positioning frame (1), and a bearing is installed at the outer position of the rotating hole. A first rotating shaft (201) is provided at the middle position of the first valve plate (2), and a second rotating shaft (301) is provided at the middle position of the second valve plate (3). The first rotating shaft (201) and the second rotating shaft (301) respectively pass through the interior of the bearings, and the bottom of the driving frame (404) is firmly connected to the first rotating shaft (201).

3. A fireproof smoke exhaust damper for ventilation and air conditioning according to claim 2, characterized in that: A synchronous pulley is installed at the bottom of each of the first rotating shaft (201) and the second rotating shaft (301), and a synchronous belt is installed between the two synchronous pulleys.

4. A fireproof smoke exhaust damper for ventilation and air conditioning according to claim 1, characterized in that: A positioning plate is provided on the inner side of the stable shell (6), an electromagnet (401) is installed on the inner side of the positioning plate, a transverse sliding hole is opened on the outer side of the positioning plate, a positioning rod is provided on one side of the rack (402), and the positioning rod passes through the interior of the sliding hole.

5. A fireproof smoke exhaust damper for ventilation and air conditioning according to claim 2, characterized in that: A gear is installed above the second rotating shaft (301), and the gear is meshed with a rack (402). A bonding plate is provided on one side of the rack (402), and an iron sheet (403) is installed on the outer side of the bonding plate. A hexagonal slot is provided above the second rotating shaft (301), and the hexagonal slot is used to connect a corresponding hexagonal wrench.

6. A fireproof smoke exhaust damper for ventilation and air conditioning according to claim 1, characterized in that: A stabilizing plate is provided above the positioning frame (1), a first electric motor (501) is installed above the stabilizing plate, a driving bevel gear is installed at the bottom of the driving shaft of the first electric motor (501), a driven bevel gear is installed at the outer side of the bidirectional threaded rod (502), and the driving bevel gear and the driven bevel gear are meshed.

7. A fireproof smoke exhaust damper for ventilation and air conditioning according to claim 1, characterized in that: Two transverse rotating holes are provided above the positioning frame (1), and the bidirectional threaded rod (502) passes through the interior of the rotating holes. A pressing plate (503) is installed on each side of the bidirectional threaded rod (502), and a threaded hole with opposite spiral directions is provided above the pressing plate (503). The bidirectional threaded rod (502) passes through the interior of the threaded hole. A sliding hole is provided on each side of the positioning frame (1), and the pressing plate (503) extends to the interior of the sliding hole.

Images