An ultra-thin positive pressure air supply valve structure

Abstract

The present invention discloses a structure of an ultra-thin positive pressure air supply valve, including: a valve outer frame, a panel, an intermediate partition, an electric actuator, a blade assembly, a connecting seat, a connecting bent handle, a transmission connecting rod, an opening spring, and a closing spring. The panel is fixedly connected to the outside of the upper mounting opening of the valve outer frame. The electric actuator is fixedly connected to the rear side of the panel. Both ends of the blade assembly are movably connected to the lower mounting opening of the valve outer frame through a rotating shaft. The connecting seat is fixedly connected to the side of the blade assembly. The square block at the front end of the connecting bent handle is fixed in the connecting seat, and the rear end of the connecting bent handle is movably connected to the transmission connecting rod through a pin shaft. The upper end of the closing spring is connected to the action end of the electric actuator, and the lower end is connected to the top end of the transmission connecting rod. The upper end of the opening spring is connected to the end of the transmission connecting rod, and the lower end is connected to the bottom of the valve outer frame. The present invention has the advantages of simple structure, reduced equipment volume, and high safety.

Description

Technical Field

[0001] The present invention relates to the technical field of fire prevention and control equipment, and specifically relates to a structure of an ultra-thin positive pressure air supply valve. Background Art

[0002] The positive pressure air supply valve is usually installed on the wall of the positive pressure air supply shaft in front of the elevator in residential buildings, office buildings, and commercial buildings, and can also be installed on the wall of the smoke exhaust shaft in the floor corridor, on the side of the smoke exhaust pipe, or at the end of the air duct. It is normally in a closed state. When a fire occurs on a floor, the positive pressure air supply valve transmits the smoke sensor signal in the elevator lobby to the fire control room. Through the automatic system in the fire control room, a 24V power supply is given to the positive pressure air supply valve to start the air valves on the fire floor and the adjacent upper and lower floors. At the same time, the positive pressure air supply fan starts. Fresh air from the outside is introduced through the positive pressure air supply fan to disperse the smoke in the stairwells on the fire floor and the adjacent upper and lower floors, creating a golden escape time for the trapped people and reducing casualties.

[0003] However, for the existing positive pressure air supply valve structure, the traditional carbon steel valve is configured with an aluminum alloy panel and valve body. At the same time, due to its own structural reasons, the existing products have relatively large defects, such as large occupied space, increased load weight of the building body, and high labor costs. Summary of the Invention

[0004] The purpose of the present invention is to provide a structure of an ultra-thin positive pressure air supply valve to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A structure of an ultra-thin positive pressure air supply valve, comprising: a valve outer frame, a panel, an intermediate partition, an electric actuator, a blade assembly, a connection seat, a connection bent handle, a transmission link, an opening spring, and a closing spring. The valve outer frame is a square frame, and the inside of the frame outer frame is a square installation opening. The intermediate partition is horizontally and fixedly connected above the inside of the valve outer frame. The intermediate partition divides the square installation opening into an upper part and a lower part. The panel is fixedly connected to the outside of the upper installation opening of the valve outer frame. The electric actuator is fixedly connected to the rear side of the panel. Both ends of the blade assembly are movably connected to the lower installation opening of the valve outer frame through a rotating shaft. Multiple groups of blade assemblies are arranged in parallel. The connection seat is composed of two relatively arranged inverted L-shaped columns, and the connection seat is fixedly connected to the side of the blade assembly. The square block at the front end of the connection bent handle is fixed in the connection seat, and the rear end of the connection bent handle is movably connected to the transmission link through a pin shaft. The upper end of the closing spring is connected to the action end of the electric actuator, and the lower end passes through the intermediate partition and is connected to the top end of the transmission link. The upper end of the opening spring is connected to the end of the transmission link, and the lower end is connected to the bottom of the valve outer frame.

[0006] Furthermore, the electric actuator consists of a housing, a clutch lever, an electromagnet, a manual pull ring, a clutch buckle, a rotary reset switch, a swing rod, a tooth fork, a clutch ring, and a rotary rod. The housing is a square housing. The middle part of the clutch lever is movably connected to the housing through a pin shaft. The electromagnet is arranged inside the housing, and the driving end of the electromagnet is connected to the rear part of the clutch lever. The manual pull ring is arranged at the end of the clutch lever. The clutch buckle is arranged at the front end of the clutch lever. The rotary reset switch is arranged at the central position of the housing. The rotary reset switch is composed of a toothed disk fixedly connected to a rotating shaft, and an energy storage spring is sleeved on the rotating shaft. The end of the swing rod is movably connected to the housing through a pin shaft. The tooth fork is movably connected to the middle part of the swing rod through a pin shaft, and the tooth fork abuts against the toothed disk of the rotary reset switch. The clutch ring is arranged at the top of the swing rod, and the clutch ring matches the clutch buckle. The rotary rod is the action end of the electric actuator, and the end of the rotary rod is fixedly connected to the rotary reset switch.

[0007] Furthermore, the blade assembly consists of two relatively arranged square unit pieces made of aluminum alloy. The side surface of the unit piece is arc-shaped. A cavity is formed inside the two unit pieces, and a steering circular tube is arranged in the cavity. The blade assembly is integrally cast.

[0008] Furthermore, the positions of the unit pieces are offset up and down. After the unit pieces are connected in a staggered manner, the exposed parts at both ends are flat connection planes.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: The ultra-thin positive pressure air supply valve structure of the present invention changes the internal structure of the traditional positive pressure air supply valve, greatly reducing its thickness, reducing the use of materials, occupying a small installation volume, reducing the load weight of the building, and reducing labor costs. Specifically, first, the electric actuator is transferred from the middle partition to the rear side of the panel, and at the same time, the action mode of the electric actuator is changed to make it flattened. In addition, the structure and driving mode of the blade assembly are changed, so that the overall equipment becomes thinner.

[0010] The present invention has the advantages of simple structure, reduced equipment volume, high safety, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the present invention;

[0012] Figure 2 is a schematic structural diagram of the electric actuator of the present invention;

[0013] Figure 3 is a schematic partial structural diagram of the blade assembly of the present invention;

[0014] In the figure: 1 - outer frame of the valve; 2 - panel; 3 - intermediate partition; 4 - electric actuator; 5 - blade assembly; 6 - connecting seat; 7 - connecting bent handle; 8 - transmission connecting rod; 9 - opening spring; 10 - closing spring; 11 - housing; 12 - clutch lever; 13 - electromagnet; 14 - manual pull ring; 15 - clutch buckle; 16 - rotary reset switch; 17 - swing rod; 18 - tooth engaging fork; 19 - clutch ring; 20 - rotary rod; 21 - unit piece. Detailed implementation manner

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0016] Please refer to Figure 1 、 2 As shown in FIGS. 1 and 3, the present invention provides a structure of an ultra-thin positive pressure air supply valve, including: an outer frame 1 of the valve, a panel 2, an intermediate partition 3, an electric actuator 4, a blade assembly 5, a connecting seat 6, a connecting bent handle 7, a transmission connecting rod 8, an opening spring 9, and a closing spring 10. The outer frame 1 of the valve is a square frame, and the inside of the outer frame 1 is a square installation opening. The intermediate partition 3 is horizontally and fixedly connected above the inside of the outer frame 1 of the valve. The intermediate partition 3 divides the square installation opening into an upper part and a lower part. The panel 2 is fixedly connected to the outside of the upper installation opening of the outer frame 1 of the valve. The electric actuator 4 is fixedly connected to the rear side of the panel 2. Both ends of the blade assembly 5 are movably connected to the lower installation opening of the outer frame 1 of the valve through a rotating shaft. A plurality of groups of blade assemblies 5 are arranged in parallel. The connecting seat 6 is composed of two oppositely arranged inverted L-shaped columns. The connecting seat 6 is fixedly connected to the side of the blade assembly 5. The square block at the front end of the connecting bent handle 7 is fixed in the connecting seat 6, and the rear end of the connecting bent handle 7 is movably connected to the transmission connecting rod 8 through a pin shaft. The upper end of the closing spring 10 is connected to the action end of the electric actuator 4, and the lower end passes through the intermediate partition 3 and is connected to the top end of the transmission connecting rod 8. The upper end of the opening spring 9 is connected to the end of the transmission connecting rod 8, and the lower end is connected to the bottom of the outer frame 1 of the valve.

[0017] Further, the electric actuator 4 is composed of a housing 11, a clutch lever 12, an electromagnet 13, a manual pull ring 14, a clutch buckle 15, a rotary reset switch 16, a swing rod 17, a gear tooth fork 18, a clutch ring 19, and a rotary rod 20. The housing 11 is a square housing. The middle part of the clutch lever 12 is movably connected to the housing 11 through a pin shaft. The electromagnet 13 is arranged inside the housing 11, and the driving end of the electromagnet 13 is connected to the rear part of the clutch lever 12. The manual pull ring 14 is arranged at the end of the clutch lever 12. The clutch buckle 15 is arranged at the front end of the clutch lever 12. The rotary reset switch 16 is arranged at the central position of the housing 11. The rotary reset switch 16 is composed of a gear disk fixedly connected to a rotating shaft, and an energy storage spring is sleeved on the rotating shaft. The end of the swing rod 17 is movably connected to the housing 11 through a pin shaft. The gear caliper fork 18 is movably connected to the middle part of the swing rod 17 through a pin shaft, and the gear caliper fork 18 abuts against the gear disk of the rotary reset switch 16. The clutch ring 19 is arranged at the top end of the swing rod 17, and the clutch ring 19 matches the clutch buckle 15. The rotary rod 20 is the action end of the electric actuator, and the end of the rotary rod 20 is fixedly connected to the rotary reset switch 16.

[0018] Further, the blade assembly 5 is composed of two relatively arranged square unit pieces 21 made of aluminum alloy. The side surface of the unit piece 21 is arc-shaped. A cavity is formed inside the two unit pieces 21, and a steering circular tube is arranged in the cavity. The blade assembly 5 is integrally cast.

[0019] Further, the positions of the unit pieces 21 are staggered up and down. After the unit pieces 21 are connected in a staggered manner, the exposed parts at both ends are flat connection planes.

[0020] Working principle: The present invention provides a structure of an ultra-thin positive pressure air supply valve. Specifically, in the closed state, the electric actuator 4 is in the upper position, pulling up the transmission connecting rod 8. At this time, the blade assembly 5 is in a vertical state, and the connecting planes are closely attached to each other. In the open state, the electric actuator 4 is in the lower position, and the opening spring 9 below pulls down the transmission connecting rod 8. At this time, the blade assembly 5 deflects; when the electric actuator 4 is in the energy storage state, the rotary reset switch 16 is limited by the tooth engaging fork 18 under the action of its own energy storage spring. At this time, the clutch ring 19 hooks the clutch buckle 15 to form a balance; when an external triggering opening signal is received, such as the electromagnet 13 is driven by a signal source or the manual pull ring 14 is pulled, at this time, the clutch ring 19 is separated from the clutch buckle 15, the swing rod 17 loses support, and the tooth engaging fork 18 can no longer act on the rotary reset switch 16. The energy storage spring of the rotary reset switch 16 twists the rotary rod 20 to be converted from the upper position to the lower position; when reset is required, lift the rear end of the clutch lever 12, manually rotate the swing rod 17, let the clutch ring 19 hook the clutch buckle 15, and then twist the rotary reset switch 16 to store energy in the energy storage spring.

[0021] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ultra-thin positive pressure air supply valve structure, characterized in that, Including: The valve outer frame (1), the panel (2), the middle partition board (3), the electric actuator (4), the blade assembly (5), the connecting seat (6), the connecting bent handle (7), the transmission connecting rod (8), the opening spring (9), and the closing spring (10). The valve outer frame (1) is a square frame, and the inside of the frame outer frame (1) is a square mounting opening. The middle partition board (3) is horizontally and fixedly connected above the inside of the valve outer frame (1). The middle partition board (3) divides the square mounting opening into an upper part and a lower part. The panel (2) is fixedly connected to the outside of the upper mounting opening of the valve outer frame (1). The electric actuator (4) is fixedly connected to the rear side of the panel (2). Both ends of the blade assembly (5) are movably connected to the lower mounting opening of the valve outer frame (1) through a rotating shaft. Multiple groups of blade assemblies (5) are arranged in parallel. The connecting seat (6) is composed of two oppositely arranged inverted L-shaped columns, and the connecting seat (6) is fixedly connected to the side of the blade assembly (5). The square block at the front end of the connecting bent handle (7) is fixed in the connecting seat (6), and the rear end of the connecting bent handle (7) is movably connected to the transmission connecting rod (8) through a pin shaft. The upper end of the closing spring (10) is connected to the action end of the electric actuator (4), and the lower end passes through the middle partition board (3) and is connected to the top end of the transmission connecting rod (8). The upper end of the opening spring (9) is connected to the end of the transmission connecting rod (8), and the lower end is connected to the bottom of the valve outer frame (1).

2. The structure of an ultra-thin positive pressure air supply valve according to claim 1, wherein, The electric actuator (4) consists of a housing (11), a clutch lever (12), an electromagnet (13), a manual pull ring (14), a clutch buckle (15), a rotary reset switch (16), a swing rod (17), a tooth-and-peg fork (18), a clutch ring (19), and a rotary rod (20). The housing (11) is a square housing. The middle part of the clutch lever (12) is movably connected to the housing (11) through a pin shaft. The electromagnet (13) is arranged inside the housing (11), and the driving end of the electromagnet (13) is connected to the rear part of the clutch lever (12). The manual pull ring (14) is arranged at the end of the clutch lever (12). The clutch buckle (15) is arranged at the front end of the clutch lever (12). The rotary reset switch (16) is arranged at the central position of the housing (11). The rotary reset switch (16) is composed of a toothed disc fixedly connected to a rotating shaft, and an energy storage spring is sleeved on the rotating shaft. The end of the swing rod (17) is movably connected to the housing (11) through a pin shaft. The tooth-and-peg fork (18) is movably connected to the middle part of the swing rod (17) through a pin shaft, and the tooth-and-peg fork (18) abuts against the toothed disc of the rotary reset switch (16). The clutch ring (19) is arranged at the top end of the swing rod (17), and the clutch ring (19) matches the clutch buckle (15). The rotary rod (20) is the action end of the electric actuator (4), and the end of the rotary rod (20) is fixedly connected to the rotary reset switch (16).

3. The structure of an ultra-thin positive pressure air supply valve according to claim 1, characterized in that, The described blade assembly (5) is composed of two relatively arranged square unit pieces (21) made of aluminum alloy. The side surface of the unit piece (21) is arc-shaped. A cavity is formed inside the two unit pieces (21), and a steering circular tube is arranged in the cavity. The blade assembly (5) is integrally cast.

4. The structure of an ultra-thin positive pressure air supply valve according to claim 3, characterized in that, The positions of the described unit pieces (21) are staggered up and down relative to each other. After the unit pieces (21) are connected in a staggered manner, the exposed parts at both ends are flat connection planes.

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