70-degree smoke exhaust fireproof valve

Abstract

The utility model discloses a 70-degree smoke exhaust fireproof valve, and relates to the technical field of ventilation system accessories. The 70-degree smoke exhaust fireproof valve comprises a fireproof outer cover, a compartment used for installation is arranged in the fireproof outer cover, a smoke exhaust pipe is arranged in the compartment, one end of the smoke exhaust pipe is provided with a hollow ball part, the hollow ball part is provided with fastening rings symmetrically arranged along a ridge line, the two fastening rings are connected into a whole through a sealing piece, and a movable ball movably embedded in the hollow ball part is arranged in the hollow ball part. The movable ball is fixedly connected with an output channel penetrating through the hollow ball part, and a blocking pipeline with a notch is led into the output channel. The smoke exhaust area formed by the butt joint pipeline and the blocking block is in butt joint with the smoke inlet area, the smoke inlet area is changed along with rotation of the movable ball and the blocking pipeline, smoke separation is completed quickly and timely, when the temperature breaks through the threshold value of a follow-up pipe fitting, the fusing part promotes the middle end of the smoke exhaust pipe to be separated when the smoke exceeds 70 DEG C, and the smoke exhaust effect is improved. And high-temperature toxic flue gas is prevented from entering a public flue.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation system accessories, and specifically relates to a 70° smoke exhaust fire damper. Background Technique

[0002] In the air supply system, the air sent by the air supply fan must be distributed to each branch pipe through the main pipe. In the exhaust or smoke exhaust system, the air or smoke is collected from each branch pipe into the main pipe and then enters the exhaust fan for discharge. Then, in both the air supply system and the smoke exhaust system, if there is no obstruction, the air supply volume and smoke exhaust volume cannot be controlled. There will be a large amount of air supply and smoke exhaust in the parts where air supply or smoke exhaust is not required, while in the parts where air supply or smoke exhaust is required, there is no air supply, smoke exhaust, or only a small amount of air supply and smoke exhaust. In order to cut off the pipeline in the parts where air supply and smoke exhaust are not required, a smoke exhaust fire damper needs to be used.

[0003] The prior art has the following deficiencies: The design structure of the existing smoke exhaust fire damper is simple, and it is manually operated during use. When a fire occurs, the manual cannot close the smoke exhaust fire damper in time, and the smoke exhaust fire damper cannot block the transmission of high-temperature and toxic smoke during a fire, resulting in poor safety performance.

[0004] To solve the above problems, a stainless steel 70-degree smoke exhaust fire damper disclosed in Chinese Patent Publication No. CN215567986U. This fire damper drives a gear to rotate through a second valve plate, and multiple gears are driven by a chain. The first valve plate, the second valve plate, the third valve plate, the fourth valve plate, and the fifth valve plate are horizontally flipped. At this time, the fire damper is in an open state. The electromagnet is energized to generate magnetism, adsorbing the permanent magnet, and the permanent magnet drives the third valve plate to flip. At this time, the first valve plate, the second valve plate, the third valve plate, the fourth valve plate, and the fifth valve plate are synchronously flipped to a vertical state, and the fire damper is closed. This smoke exhaust fire damper can be automatically closed during a fire, with good safety.

[0005] First of all, the above device uses the second valve plate to drive a gear to rotate, and finally completes the synchronous flipping of other valve plates. During this process, in the transmission of gear meshing, the connection of the electromagnet being energized, and the process of the valve plate flipping, there is still a situation where high-temperature and toxic smoke is discharged. Therefore, the instantaneous blocking and synchronization degree of this device need to be further improved. Content of the Utility Model

[0006] Aiming at the deficiencies of the prior art, the utility model provides a 70° smoke exhaust fire damper, which solves the problems raised in the above background technique.

[0007] To achieve the above objectives, the present utility model is realized through the following technical solutions: A 70° smoke exhaust fire damper, comprising a fireproof outer cover, wherein a compartment for installation is provided inside the fireproof outer cover, and smoke exhaust pipes communicating with the smoke exhaust system are arranged in an array inside the compartment. One end of the smoke exhaust pipe is limit-mounted on a mounting plate vertically welded to the compartment, and the end of the smoke exhaust pipe away from the mounting plate is provided with a hollow spherical portion with a hole.

[0008] The hollow spherical portion has fastening rings symmetrically arranged along the ridge line. The two fastening rings are connected into one body by a sealing member. An activity ball is movably fitted inside the hollow spherical portion. The activity ball is fixedly connected with an output channel penetrating through the hollow spherical portion. A blocking pipe with a notch is introduced into the output channel, and the blocking pipe and the output channel form a smoke inlet area. Among them, the fastening ring further ensures the connection and stability after the hollow spherical portion is welded to the smoke exhaust pipe. After the activity ball is movably fitted into the hollow spherical portion, the activity ball can rotate inside it. Therefore, after the activity ball rotates, it drives the blocking pipe to rotate, and finally the smoke inlet area changes the smoke exhaust position.

[0009] A further improvement of the technical solution of the present utility model lies in that: a fusing portion is provided inside the smoke exhaust pipe and between the mounting plate and the hollow spherical portion.

[0010] Preferably, the fusing portion added inside the smoke exhaust pipe ensures that after the temperature exceeds the threshold of the subsequent pipe fittings, the damage of the pipe fittings of the entire smoke exhaust fire prevention system and the spread of the fire are avoided. Therefore, when the smoke exceeds 70°, the fusing portion causes the middle end of the smoke exhaust pipe to separate, sealing the fireproof outer cover, preventing high-temperature and toxic smoke from entering the common flue, and reducing the loss and danger to an acceptable range.

[0011] A further improvement of the technical solution of the present utility model lies in that: docking pipes are abutted against the other ends of the blocking pipe and the output channel respectively. A blocking block matching the blocking pipe with a notch is welded on the docking pipe. The notch of the blocking block and the docking pipe form a smoke exhaust area. Preferably, during the normal smoke exhaust process, the blocking pipe and the activity ball are in an initial position and stationary. Therefore, the smoke exhaust area formed by the docking pipe and the blocking block is docked with the smoke inlet area, and the smoke is discharged smoothly. When a fire occurs and the smoke is mixed with toxic gases, the smoke inlet area changes as the activity ball and the blocking pipe rotate. At this time, the smoke inlet area is not docked with the smoke exhaust area, and the smoke inlet area is blocked. Therefore, the smoke is quickly and timely blocked.

[0012] A further improvement of the technical solution of the utility model is that in order to ensure the instantaneous and synchronous smoke isolation, the output channel is keyed to a meshing gear on the outside, and the two ends of the meshing gear are meshedly connected to a toothed plate vertically installed in the compartment. The toothed plate is controlled by an electric push rod fixedly installed at the bottom of the compartment. When a fire occurs and emergency stop and blocking of toxic smoke discharge when the smoke exceeds 70° are required, a buzzer and a temperature sensor send an electrical signal to the control end of the electric push rod, the electric push rod starts, the toothed plate rises and falls, and the meshing gears individually arranged on each output channel transmit the torque to the pipe. Finally, the movable ball and the blocked pipe rotate.

[0013] A further improvement of the technical solution of the utility model is that when each smoke inlet area is blocked, in order to further prevent smoke from overflowing, the docking pipe is located at a positioning port opened in the fireproof outer cover, and each of the output channels is provided with a linkage connecting rod, and the lower end of the linkage connecting rod is fixedly connected to a lifting assembly connected to the control system and the electric push rod.

[0014] A further improvement of the technical solution of the utility model is that a permanent magnet is fixedly installed at the positioning port of the docking pipe, electromagnets fixedly installed on the fireproof outer cover are arranged at both ends of the permanent magnet, and the positioning port is docked with a closed box.

[0015] Beneficial Effects

[0016] The utility model provides a 70° smoke exhaust fire damper. Compared with the prior art, it has the following beneficial effects:

[0017] 1. The 70° smoke exhaust fire damper connects the smoke exhaust area formed by the docking pipe and the block to the smoke inlet area, and the smoke inlet area changes with the rotation of the movable ball and the blocked pipe, so as to quickly and timely complete the smoke isolation. When the temperature exceeds the threshold of the subsequent pipe fittings, the fuse part causes the middle end of the smoke exhaust pipe to separate when the smoke exceeds 70°, so as to avoid toxic smoke from entering the public flue when the smoke exceeds 70°, thereby reducing losses and dangers.

[0018] 2. The 70° smoke exhaust fire damper is pushed forward by a linkage connecting rod. At this time, each blocked pipe and output channel are tilted, eliminating the abutment and docking state between the blocked pipe and the docking pipe. In addition, the closed box body and the fireproof cover docked at the positioning port form an overall closed area, avoiding the backflow of smoke after being blocked, further improving the fire prevention and partition effect of the fire damper. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a front view of the utility model;

[0021] Figure 3 This is a schematic structural diagram of the output channel and the docking pipeline of the present utility model;

[0022] Figure 4 This is a schematic side structure diagram of the docking pipeline of the present utility model.

[0023] In the figure: 1, fireproof outer cover; 101a, compartment; 101b, smoke exhaust pipe; 101c, mounting plate; 101d, positioning port;

[0024] 101b-1, hollow spherical part; 101b-2, fusing part;

[0025] 101b-1a, fastening ring; 101b-1b, seal;

[0026] 201, movable ball; 201-1, output channel; 201-2, blocking pipeline; 201-3, smoke inlet area;

[0027] 201-1a, meshing gear; 201-1b, toothed plate; 201-1c, electric push rod; 201-2a, linkage rod; 201-2b, lifting component;

[0028] 202, docking pipeline; 202-1, plug; 202-2, electromagnet; 202-3, smoke exhaust area; 202-4, permanent magnet. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] Refer to Figures 1-4 , the present utility model provides 3 technical solutions:

[0031] Embodiment 1:

[0032] A 70° smoke exhaust and fire prevention valve includes a fireproof outer cover 1. Inside the fireproof outer cover 1, there is a compartment 101a for installation. Inside the compartment 101a, a plurality of smoke exhaust pipes 101b communicating with the smoke exhaust system are arranged in an array. One end of the smoke exhaust pipe 101b is limit-mounted on the mounting plate 101c vertically welded to the compartment 101a. The end of the smoke exhaust pipe 101b away from the mounting plate 101c is provided with a hollow spherical part 101b-1 with a hole;

[0033] The hollow spherical part 101b-1 has fastening rings 101b-1a symmetrically arranged along the ridge line. The two fastening rings 101b-1a are connected into one body by a seal 101b-1b. An activity ball 201 movably fitted therein is arranged inside the hollow spherical part 101b-1. The activity ball 201 is fixedly connected with an output channel 201-1 penetrating through the hollow spherical part 101b-1. A blocking pipe 201-2 with a notch is introduced into the output channel 201-1. The blocking pipe 201-2 and the output channel 201-1 form a smoke inlet area 201-3.

[0034] In this embodiment, the fastening rings 101b-1a further ensure the connection and stability after the hollow spherical part 101b-1 is welded to the smoke exhaust pipe 101b. After the activity ball 201 is movably fitted into the hollow spherical part 101b-1, the activity ball 201 realizes rotation therein. Therefore, after the activity ball 201 rotates, the blocking pipe 201-2 is driven to rotate, and finally the smoke inlet area 201-3 changes the smoke exhaust position.

[0035] A fusing part 101b-2 is arranged inside the smoke exhaust pipe 101b and between the mounting plate 101c and the hollow spherical part 101b-1.

[0036] Preferably, in this embodiment, the fusing part 101b-2 additionally added inside the smoke exhaust pipe 101b ensures that after the temperature exceeds the threshold of the subsequent pipe fittings, the damage of the pipe fittings of the entire smoke exhaust and fire prevention system and the spread of the fire are avoided. Therefore, when the smoke exceeds 70°, the fusing part 101b-2 causes the middle end of the smoke exhaust pipe 101b to separate, sealing the fireproof outer cover 1, preventing toxic smoke from entering the common flue when the smoke exceeds 70°, and reducing the loss and danger to an acceptable range.

[0037] Embodiment 2:

[0038] Based on Embodiment 1: Docking pipes 202 are abutted against both the blocking pipe 201-2 and the other end of the output channel 201-1. A blocking block 202-1 matching the blocking pipe 201-2 with a notch is welded to the docking pipe 202. The notch of the blocking block 202-1 and the docking pipe 202 form a smoke exhaust area 202-3.

[0039] As shown in the attached drawing, in this embodiment, during the normal smoke exhaust process, the blocking pipe 201-2 and the activity ball are stationary at the initial position. Therefore, the smoke exhaust area 202-3 formed by the docking pipe 202 and the blocking block 202-1 is docked with the smoke inlet area 201-3, and the smoke is discharged smoothly. When a fire occurs and the smoke is mixed with toxic gases, the smoke inlet area 201-3 changes as the activity ball 201 and the blocking pipe 201-2 rotate. At this time, the smoke inlet area 201-3 is not docked with the smoke exhaust area 202-3, and the smoke inlet area 201-3 is blocked. Therefore, the smoke is quickly and timely blocked.

[0040] Embodiment three:

[0041] On the basis of Example 1 and Example 2: In order to ensure the instantaneous and synchronous smoke isolation, the output channel 201-1 is externally keyed with a meshing gear 201-1a, and both ends of the meshing gear 201-1a are meshedly connected with a tooth plate 201-1b vertically installed in the compartment 101a, and the tooth plate 201-1b is controlled by an electric push rod 201-1c fixedly installed at the bottom of the compartment 101a.

[0042] Specifically, when a fire occurs and emergency stagnation and smoke isolation is required to prevent toxic smoke from being discharged when the smoke exceeds 70°, the buzzer and temperature sensor send an electrical signal to the control end of the electric push rod 201-1c, the electric push rod 201-1c starts, the gear plate 201-1b rises and falls, and the meshing gear 201-1a separately arranged on each output channel 201-1 transmits the torque force to the pipeline, and finally, the movable ball 201 and the blocked pipeline 201-2 rotate.

[0043] In the above, when each smoke inlet area 201-3 is blocked, in order to further prevent smoke from overflowing, the docking pipe 202 is located at the positioning port 101d opened in the fireproof outer cover 1, and each output channel 201-1 is provided with a linkage rod 201-2a, and the lowermost linkage rod 201-2a is fixedly connected to a lifting assembly 201-2b connected to the control system and the electric push rod 201-1c.

[0044] A permanent magnet 202 - 4 is fixedly installed at the positioning opening 101 d of the docking pipe 202 . Both ends of the permanent magnet 202 - 4 are provided with electromagnets 202 - 2 fixedly installed on the fireproof outer cover 1 . The positioning opening 101 d docks with the closed box.

[0045] In this embodiment, after the lifting component 201-2b receives the electrical signal, it is pushed forward through the linkage rod 201-2a. At this time, each blocked pipe 201-2 and the output channel 201-1 are tilted. At this time, the abutment state between the blocked pipe 201-2 and the docking pipe 202 is cancelled, and the closed box body and the fireproof outer cover 1 docked by the positioning port 101d form an overall closed area, avoiding the backflow of smoke after being blocked, thereby further improving the fire prevention and partition effect of the fire damper.

[0046] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used.

[0047] During use, when a fire breaks out, after smoke alarms, buzzers, temperature sensors, etc. send electrical signals to the control module of the electric push rod 201-1c, the electric push rod 201-1c is activated, the toothed plate 201-1b moves up and down, and the meshing gears 201-1a separately arranged on each output channel 201-1 transmit the torque force to the pipeline, and the movable ball 201 and the blocking pipeline 201-2 rotate. At this time, the smoke inlet area 201-3 and the smoke exhaust area 202-3 are not docked, the smoke inlet area 201-3 is blocked, and the preliminary isolation of the flue gas is completed. After the lifting assembly 201-2b receives the electrical signal, the linkage rod 201-2a is pushed forward. At this time, each blocking pipeline 201-2 and the output channel 201-1 are inclined, and the abutting and docking state between the blocking pipeline 201-2 and the docking pipeline 202 is cancelled, ensuring that the flue gas does not escape.

[0048] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0049] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A 70° smoke exhaust fire damper, comprising a fireproof outer cover (1), characterized in that: Inside the fireproof outer cover (1), there is a compartment (101a) for installation. Inside the compartment (101a), exhaust pipes (101b) connected to the exhaust system are arranged in an array. One end of the exhaust pipe (101b) is limit-mounted on a mounting plate (101c) vertically welded to the compartment (101a), and the end of the exhaust pipe (101b) far from the mounting plate (101c) is provided with a hollow spherical part (101b-1) with holes. The hollow spherical part (101b-1) has fastening rings (101b-1a) symmetrically arranged along the ridge line. The two fastening rings (101b-1a) are connected into one body by a seal (101b-1b). Inside the hollow spherical part (101b-1), there is a movable ball (201) movably fitted therein. The movable ball (201) is fixedly connected with an output channel (201-1) passing through the hollow spherical part (101b-1). A blocked pipe (201-2) with a notch is introduced into the output channel (201-1), and the blocked pipe (201-2) and the output channel (201-1) form a smoke inlet area (201-3).

2. The 70° smoke exhaust fire damper according to claim 1, characterized in that: Inside the exhaust pipe (101b) and between the mounting plate (101c) and the hollow spherical part (101b-1), there is a fusing part (101b-2).

3. A 70° smoke exhaust fire damper according to claim 1, characterized in that: Both the other ends of the blocked pipe (201-2) and the output channel (201-1) are abutted against a docking pipe (202). The docking pipe (202) is welded with a blocking block (202-1) matching the blocked pipe (201-2) with a notch. The notch of the blocking block (202-1) and the docking pipe (202) form a smoke exhaust area (202-3).

4. A 70° smoke exhaust fire damper according to claim 3, characterized in that: On the outside of the output channel (201-1), meshing gears (201-1a) are key-connected. The two ends of the meshing gears (201-1a) are meshed with tooth plates (201-1b) vertically installed in the compartment (101a), and the tooth plates (201-1b) are controlled by an electric push rod (201-1c) fixedly installed at the bottom of the compartment (101a).

5. The 70° smoke exhaust fire damper according to claim 3, characterized in that: The docking pipe (202) is located at a positioning port (101d) opened on the fireproof outer cover (1). A linkage connecting rod (201-2a) is sleeved on each output channel (201-1). The lowermost linkage connecting rod (201-2a) is fixedly connected with a lifting assembly (201-2b) whose control system is connected to the electric push rod (201-1c).

6. The 70° smoke exhaust fire damper according to claim 5, characterized in that: The docking pipe (202) is fixedly installed with a permanent magnet (202-4) at the positioning port (101d). Electromagnets (202-2) are fixedly installed at both ends of the permanent magnet (202-4), and the positioning port (101d) is docked with a closed box body.

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