CN114151554A

CN114151554A - Intelligent valve and centralized smoke exhaust system

Info

Publication number: CN114151554A
Application number: CN202111542272.0A
Authority: CN
Inventors: 任富佳; 张建平; 李富强; 李明
Original assignee: Hangzhou Robam Appliances Co Ltd
Current assignee: Hangzhou Robam Appliances Co Ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-03-08

Abstract

The invention relates to the technical field of kitchen equipment, in particular to an intelligent valve and a centralized smoke exhaust system, which comprise a valve body, a valve plate and a driving system, wherein an air duct is arranged on the valve body; the valve plate is arranged along the air duct intercepting surface in a sliding mode and can intercept the air duct; the driving system is connected with the valve body and the valve plate and controls the valve plate to slide to a preset position in a reciprocating mode from the air duct outer part to the air duct inner part along the cutoff surface. The intelligent valve and the centralized smoke exhaust system provided by the invention can realize two effects of fireproof non-return and power distribution, and combine the original fireproof non-return valve and the original power distribution valve into a whole, thereby reducing the installation steps, improving the installation efficiency, saving the installation space and reducing the cost; the inside space in wind channel can also be practiced thrift in the setting of valve block slidingtype, has promoted the biggest ventilation efficiency in wind channel.

Description

Intelligent valve and centralized smoke exhaust system

Technical Field

The invention relates to the technical field of kitchen equipment, in particular to an intelligent valve and a centralized smoke exhaust system.

Background

The current multi-storey residential kitchens began to employ a centralized fume extraction system for removing the fumes produced by the kitchens, the system comprising: the intelligent indoor smoke distribution system comprises an outdoor host, a public flue, indoor flues and indoor terminals, wherein the outdoor host, the public flue, the indoor flues and the indoor terminals are sequentially communicated, a plurality of indoor cigarettes are communicated with the public flue, and each indoor flue is respectively provided with a fire damper and a power distribution valve. The fire prevention valve is a mechanical fire prevention check valve, cannot be intelligently linked with the range hood, does not have a fire prevention early warning function, and the opening angle of the valve plate is uncontrollable; the non-return function mainly depends on the acting force of a spring, and the smoke discharge resistance is increased while the sealing performance of the valve plate is improved by increasing the acting force of the spring; in addition, when the fire damper is installed on a public flue, a valve body is usually placed in the flue after a hole is formed in the flue and is sealed by using structural adhesive, and the valve body may incline or shift during the curing of the sealing adhesive, so that poor sealing is caused; the power distribution valve is used for balancing the air exhaust amount of residents on each floor, a single valve plate overturning structure is adopted mostly, air distribution is carried out according to the opening angle and the projection area of the valve plate, the calculation precision is poor, in addition, the power distribution valve realizes the sealing function through the compression of the valve plate and the valve seat, and the sealing performance is poor.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the fire prevention valve and the power distribution valve need to be installed in the existing smoke exhaust system respectively, the two valves exist simultaneously, the installation steps are complex, the product cost and the installation cost are high, the valve body arranged in the air duct in an overturning mode influences the maximum ventilation efficiency of the air duct, and the ventilation area cannot be accurately calculated.

(II) technical scheme

In order to solve the above technical problem, an embodiment of an aspect of the present invention provides an intelligent valve, including: the valve comprises a valve body, a valve plate and a driving system, wherein an air duct is arranged on the valve body; the valve plate is arranged along the air duct intercepting surface in a sliding mode and can intercept the air duct; the driving system is connected with the valve body and the valve plate and controls the valve plate to slide to a preset position in a reciprocating mode from the air duct outer part to the air duct inner part along the cutoff surface.

According to one embodiment of the invention, the inner wall of the air duct is further provided with a valve plate groove for accommodating the sliding of the valve plate, and when the valve plate is not positioned at the two ends of the air duct, the valve plate groove provides a preset space for the sliding of the valve plate.

According to one embodiment of the invention, the valve plate comprises a first valve plate and a second valve plate, the first valve plate and the second valve plate are oppositely arranged in an opening and closing mode, the sliding directions are opposite, when the first valve plate and the second valve plate are closed, the valve plate cuts off the air duct, the air duct is opened and closed in the center due to the arrangement of the first valve plate and the second valve plate, and the problem that one side of the air duct is ventilated due to a single valve plate is avoided, so that the effect is poor.

According to one embodiment of the invention, the closed ends of the first valve plate and the second valve plate are provided with correspondingly arranged sealing elements, and the sealing elements can improve the sealing property between the first valve plate and the second valve plate and avoid air leakage.

According to one embodiment of the invention, the first valve plate main body and the second valve plate main body are both in a semicircular sheet structure, the rotating shaft holes are arranged on the same side, the driving system is connected with the rotating shaft holes and can control the first valve plate and the second valve plate to axially rotate and slide along the rotating shaft holes and open and close to a preset opening and closing angle, and the rotation driving is beneficial to calculating the ventilation area of the valve plates and improving the accuracy of air distribution.

According to one embodiment of the invention, the driving system comprises a rotating shaft, a transmission part, a motor and a control box, wherein the rotating shaft is fixedly arranged in the rotating shaft hole, one end of the rotating shaft is connected with the motor through the transmission part, the control box can receive an external instruction and send the external instruction to the motor so as to control the working state of the motor, and the control box is externally connected with a power supply and supplies power to the intelligent valve.

According to one embodiment of the invention, the valve further comprises a motor support and a motor cover, one end of the motor support is fixedly connected with the valve body, the other end of the motor support fixedly supports the motor, and the motor cover covers the motor and the outer side of the motor support to prevent the motor from being damaged due to external environment.

According to one embodiment of the invention, the motor is a speed reducing motor with a braking system, and the speed reducing motor has the characteristics of rapid braking, accurate positioning, safety, reliability and the like, and can better realize the control of the valve plate.

According to one embodiment of the invention, the valve body is further provided with a temperature sensor and an alarm device for monitoring the temperature in the air duct, the temperature sensor is connected with the driving system, when the temperature sensor detects that the temperature in the air duct exceeds a preset value, the driving system controls the valve plate to cut off the air duct, and simultaneously the alarm device is triggered to give an alarm, so that the purpose of fire prevention and non-return is achieved, and the early warning given by the alarm device enables indoor personnel to sense the air duct at the first time, and the optimal escape time can be effectively utilized.

According to one embodiment of the invention, the air conditioner further comprises a power-off protection system, when the temperature in the air duct exceeds a preset value and the valve plate cuts off the air duct, the power-off protection system cuts off the power supply of the driving system, and the control box is prevented from being damaged by heat and sending an error instruction to reopen the valve plate.

According to an embodiment of the invention, the flue gas exhaust device further comprises a mounting seat, wherein the mounting seat is arranged at the air outlet end of the air duct and comprises a fixing sleeve and an external connecting plate, the fixing sleeve is sleeved on the outer wall of the air outlet end of the air duct, the inner end of the fixing sleeve is connected with the external connecting plate, the outer end of the fixing sleeve is provided with a convex elastic clamping hook, and the elastic clamping hook is matched with the external connecting plate and can be used for clamping the mounting seat on a flue wall, so that the mounting seat and the flue wall are connected more stably.

According to one embodiment of the invention, the outer wall of the fixed sleeve is also provided with a sol groove, the sol groove is also provided with a through hole communicated with the inner wall of the fixed sleeve, and structural adhesive is injected into the sol groove through the through hole when the mounting seat is mounted, so that the mounting seat is more stably connected with the flue wall.

The invention provides a centralized smoke exhaust system, which comprises an outdoor host, a public flue, an indoor flue and a terminal machine which are sequentially communicated, wherein the public flue and the indoor flue are communicated through an intelligent valve, the intelligent valve is the intelligent valve in any embodiment, the outdoor host and the terminal machine are respectively provided with an operation device for controlling the driving system, and the air quantity of each terminal machine in each floor of a building is ensured to be the same by centrally controlling a valve plate on the intelligent valve of each smoke exhaust system.

According to one embodiment of the invention, a power socket for supplying power to the terminal machine is fixedly arranged at one end of the intelligent valve, and the power socket is arranged to facilitate power connection of the terminal machine.

The invention has the beneficial effects that: according to the intelligent valve and the centralized smoke exhaust system, the intelligent valve can achieve two effects of fire prevention check and power distribution, the original fire prevention check valve and the original power distribution valve are combined into a whole, installation steps are reduced, installation efficiency is improved, installation space is saved, and cost is reduced; the inside space in wind channel can also be practiced thrift in the setting of valve block slidingtype, has promoted the biggest ventilation efficiency in wind channel.

The centralized smoke exhaust system can control the air volume of each household to be adjusted through the intelligent valve, and compared with the existing turnover valve plate, the sliding valve plate is more favorable for controlling and accurately calculating the ventilation area of the air channel of the valve body.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a centralized smoke exhaust system according to an embodiment of the present invention;

FIG. 2 is a schematic view of a first angular perspective of a smart valve according to an embodiment of the present invention;

fig. 3 is an exploded perspective view of a smart valve according to an embodiment of the present invention;

FIG. 4 is a schematic perspective view of a valve body according to one embodiment of the present invention;

FIG. 5 is a second perspective view of a smart valve according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a front view of a smart valve according to an embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view of a valve body provided in accordance with an embodiment of the present invention;

FIG. 8 is a schematic perspective view of a valve plate structure according to an embodiment of the present invention;

FIG. 9 is a perspective exploded view of a smart valve coupled to a common flue in accordance with an embodiment of the present invention;

FIG. 10 is a schematic left side view of a smart valve in connection with a common flue in accordance with an embodiment of the present invention;

FIG. 11 is an enlarged view of the part A of FIG. 10;

FIG. 12 is a schematic view of a first angled perspective of a mounting base according to an embodiment of the present invention;

FIG. 13 is a perspective view of a second angle of the mounting base according to one embodiment of the present invention;

fig. 14 is a perspective view of an indoor flue connection according to an embodiment of the present invention.

Icon: 1. a valve body; 101. a left valve body plate; 102. a right valve body plate; 11. an air duct; 12. a valve plate groove; 13. a temperature sensor; 14. a fixed part; 15. a wireless communication module; 16. a mounting seat; 161. fixing a sleeve; 1611. an elastic clamping hook; 1612. a sol tank; 1613. a through hole; 162. an outer connecting plate; 17. a power socket; 18. an indoor flue connection; 181. a connector slot; 2. a valve plate; 21. a first valve plate; 22. a second valve plate; 23. a seal member; 24. a rotating shaft hole; 3. a drive system; 31. a rotating shaft; 32. a transmission member; 33. a motor; 34. a control box; 35. a support; 36. a motor cover; 40. an outdoor host; 50. a common flue; 60. an indoor flue; 70. and a terminal machine.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and detailed description, and the embodiments and features of the embodiments of the present application may be combined with each other without conflict. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 14, the invention provides an intelligent valve, which comprises a valve body 1, a valve plate 2 and a driving system 3, wherein the main body of the valve body 1 is a circular plate, an air duct 11 is arranged at the center of the circular plate of the valve body 1, the flow direction of the air duct 11 is perpendicular to the center of the circular plate of the valve body 1 and penetrates through the valve body 1, the air duct 11 is formed by a cylindrical structure, a valve plate groove 12 is arranged on the inner wall of the joint of the air duct 11 and the circular plate, and the valve plate groove 12 extends into the circular plate; the valve plate 2 is arranged in the valve plate groove 12, the valve plate groove 12 provides a preset space for the sliding of the valve plate 2, the valve plate 2 can slide perpendicular to the air duct 11, the sliding surface forms one of the intercepting surfaces of the air duct 11, and the valve plate groove 12 can slide into the air duct 11 to intercept the air duct 11; the driving system 3 is connected with the valve body 1 and the valve plate 2 and controls the valve plate 2 to slide to a preset position from the outside of the air duct 11 to the inside of the air duct 11 along the cutoff surface in a reciprocating mode.

The valve body 1 main part is that the circle form board comprises left valve body board 101 and the right valve body board 102 that can dismantle the concatenation, the concatenation department is equipped with fixed part 14, and the concatenation is provided with and does benefit to the installation and the maintenance of valve block 2 and other parts.

As shown in fig. 3, fig. 6, fig. 7, and fig. 8, the valve sheet 2 includes a first valve sheet 21 and a second valve sheet 22, the first valve sheet 21 and the second valve sheet 22 are oppositely opened and closed, and the sliding directions are opposite, the main body is in a semicircular sheet structure, the same side is provided with a rotating shaft hole 24, the rotating shaft hole 24 is used for inserting a rotating shaft 31 arranged on the driving system 3, and the rotating shaft 31 in the driving system 3 drives the first valve sheet 21 and the second valve sheet 22 to axially and rotationally slide along the rotating shaft hole 24, the rotating directions of the first valve sheet 21 and the second valve sheet are opposite, and by controlling the opening and closing angles of the first valve sheet 21 and the second valve sheet 22, the ventilation area of the cut-off surface at the valve sheet 2 of the air duct 11 is controllable, and the rotation drive helps to calculate the ventilation area at the valve sheet 2, and improve the accuracy of air distribution.

When first valve block 21 with when second valve block 22 is closed valve block 2 cuts wind channel 11, the relative setting of first valve block 21 and second valve block 22 still makes wind channel 11 opens and shuts between two parties, avoids leading to because of single valve block 11 flow path in wind channel 11 is in wind channel 11 one side, has avoided the ventilation effect not good simultaneously and wind channel 11 to be difficult to clear up the maintenance.

First valve block 21 and second valve block 22 closed end are equipped with the sealing member 23 that corresponds the setting, sealing member 23 is slot and the inserted sheet of relative setting, the slot sets up in the closed end of first face of starting, the inserted sheet set up in the closed end of second valve block 22, sealing member 23 can improve first valve block 21 with leakproofness between the second valve block 22 avoids gas leakage.

As shown in fig. 3 and 10, the drive system 3 includes: pivot 31, driving medium 32, motor 33 and control box 34, driving medium 32 is including the drive gear and the driven gear that are connected, pivot 31 includes first pivot and second pivot, and wherein first pivot one end is fixed peg graft in the pivot hole 24 of first valve block 21, the other end passes through drive gear connects motor 33, the fixed peg graft of second pivot with in the pivot hole 24 of second valve block 22, the other end is connected driven gear, when motor 33 rotates can drive gear rotates thereby drive driven gear rotates, and drive through first pivot and second pivot the rotation of first valve block 21 and second valve block 22, wherein drive gear with driven gear rotates the opposite direction, makes first valve block 21 with the rotatory slip opposite direction of rotation of second valve block 22, control box 34 has connect wireless communication module 15 and is used for receiving the instruction that terminating machine 70 and outdoor host 40 sent and the rotation of outdoor host computer 40 is opposite, and control box 34 has been used for receiving terminating machine 70 and outdoor host computer 40 and send And the command is transmitted to the motor 33 and used for controlling the working state of the motor 33, and the control box 34 is externally connected with a power supply and supplies power to the intelligent valve.

The motor 33 is a speed reducing motor with a braking system, the speed reducing motor has the characteristics of rapid braking, accurate positioning, safety, reliability and the like, and the valve plate 2 can be better controlled.

As shown in fig. 3, 5 and 10, the driving system 3 further includes a motor bracket 35 and a motor cover 36, one end of the motor bracket 35 is fixedly connected to the outer side of the circular plate structure of the valve body 1, the other end of the motor bracket 35 is fixedly connected to the motor 33, the motor bracket 35 can prevent the motor 33 from being displaced, and the motor cover 36 covers the motor 33 and the outer side of the motor bracket 35 to prevent the motor 33 from being damaged due to external environment.

As shown in fig. 3, the valve body 1 is further provided with a temperature sensor 13 and an alarm device for monitoring the temperature in the air duct 11, the alarm device is located in the control box 34, the temperature sensor 13 is located on the right valve body plate 102 of the valve body 1 and is connected with the driving system 3, when the temperature sensor 13 detects that the temperature in the air duct 11 exceeds a preset value, the driving system 3 controls the first valve plate 21 and the second valve plate 22 to close and block the air duct 11, and simultaneously triggers the alarm device to give out a sound alarm, so that the purpose of fire prevention and non-return is achieved, and an early warning is given out by the alarm device, so that indoor personnel can sense the temperature at the first time, and the optimal escape time can be effectively utilized.

In another embodiment of the present invention, the intelligent valve further includes a power-off protection system, and when the temperature in the air duct 11 exceeds a preset value and the valve plate 2 blocks the air duct 11, the power-off protection system cuts off the power supply of the driving system 3, so as to prevent the control box 34 from being damaged by heat and sending an error command to reopen the valve plate.

As shown in fig. 9 to 13, the mount pad 16 set up in wind channel 11 air-out end for connect public flue 50 and wind channel 11, set up in on the 50 lateral walls of public flue, including fixed cover 161 and external connecting plate 162, fixed cover 161 cup joint in 11 air-out end outer walls in wind channel, external connecting plate 162 perpendicular to the lateral wall of fixed cover 161 the inner, fixed cover 161 the inner end is connected with external connecting plate 162, and the outer end is equipped with three group's elasticity trip 1611 that evagination and equidistance set up, elasticity trip 1611 with the cooperation of external connecting plate 162 can be used for with mount pad 16 joint is on the flue wall, makes mount pad 16 with the connection of flue wall is more stable. Fixed cover 161 outer wall still is equipped with sol groove 1612, still be equipped with the intercommunication on the sol groove 1612 3 group's equidistance through-hole 1613 of fixed cover 161 inner wall passes through when mount pad 16 installs through-hole 1613 to inject the structure glue in the sol groove 1612, make mount pad 16 with the connection of flue wall is more stable.

As shown in fig. 1, one embodiment of the present invention further provides a centralized smoke exhaust system, which includes an outdoor host 40, a common flue 50, an indoor flue 60 and a terminal 70, which are sequentially connected, where the common flue 50 and the indoor flue 60 are connected through the intelligent valve, the intelligent valve is the intelligent valve described in any of the above embodiments, the outdoor host 40 and the terminal 70 are both provided with an operation and control device for controlling the driving system 3, and the air volume of each terminal 70 of each floor in a building is ensured to be the same by centrally controlling the valve plate 2 on the intelligent valve of each smoke exhaust system to slide to different preset positions.

As shown in fig. 5, a power socket 17 for supplying power to the terminal 70 is fixed at one end of the smart valve, and the power socket 17 is provided to facilitate power connection of the terminal 70.

Installing an intelligent valve:

firstly, a circular opening for installing the mounting seat 16 is formed in the side wall of the public flue 50 by using a hole digger; the outer end of the fixing sleeve 161 is pushed into the mounting hole, the elastic clamping hook retracts in the process, and when the elastic clamping hook 1611 crosses the side wall of the public flue 50, the elastic clamping hook protrudes outwards again, so that the elastic clamping hook is clamped on the wall of the public flue 50; structural adhesive is injected into the three glue injecting holes of the mounting base, so that the annular glue containing space is filled with the structural adhesive; inserting the air outlet end of the air duct 11 of the intelligent valve into the mounting base to enable the mounting clamping hook on the mounting base to be tightly matched with the mounting clamping groove on the outer wall of the air duct 11; one end of the indoor flue connecting piece 18 with the connecting piece clamping groove 181 is inserted into the air inlet end of the air duct 11, so that the connecting piece clamping groove 181 is clamped with the inner wall of the air inlet end of the air duct 11 to form tight fit.

The working principle and the control process are as follows:

when the terminal machine 70 is opened or closed, the control box 34 sends a corresponding instruction according to the working state of the terminal machine 70 to control the operation of the speed reducing motor, the speed reducing motor operates to drive the first valve plate 21 to rotate, and the transmission gear connected with the first valve plate 21 drives the driven gear to drive the second valve plate 22 to rotate, so that the intelligent valve is opened or closed. The control box 34 in the intelligent valve is connected with the wireless communication module 15, and can realize communication linkage with the outdoor host 40, and when the host sends an instruction, the control box 34 of the intelligent valve can also control the speed reduction motor to operate according to the host instruction, so that the valve plate 2 is opened to a required angle.

Be equipped with temperature sensor 13 and sound early warning device on the intelligence valve, when public flue 50 takes place the condition of a fire, temperature sensor 13 detects when the temperature reaches the fire prevention temperature value of presetting in the 34 procedures of control box, judge that the condition of a fire takes place, control box 34 sends the instruction and makes sound early warning device continuously report to the police, send instruction control gear motor operation simultaneously and close valve block 2, send the instruction and cut off control box 34 power input after control box 34 receives the feedback information that valve block 2 closed the target in place, prevent that control box 34 from being heated and damaging and send the wrong instruction and reopen valve block 2.

The principle of improving the air volume distribution accuracy is as follows: the centralized smoke exhaust system can be applied to high-rise residential buildings, an outdoor host machine 40 is arranged on the top of the building and provides power for terminal machines 70 of users of the whole building, the air quantity of each terminal machine 70 of each family from the first building to the top of the building needs to be guaranteed to be the same in the process, the opening angles of the first valve plate 21 and the second valve plate 22 are controlled, the opening angles of each floor are different, and accurate calculation needs to be carried out according to the number of floors and the air quantity during design. Most of the existing power distribution valves adopt a single-valve-plate overturning structure, when the opening angle is calculated, the ventilation area needs to be determined by simultaneously considering the assumed opening angle of the valve plate and the projection area of the valve plate and the valve body 1, the calculation error of the ventilation area is large, usually an initial value is calculated, and then the final opening angle of each layer is determined according to field experiment optimization, so that an error exists; according to the sliding opening structure of the valve plate 2, only the opening angles of the first valve plate 21 and the second valve plate 22 need to be considered when the ventilation area is calculated, the ventilation area can be accurately calculated, experimental cooperation is not needed, the development period and the workload are reduced, and the final opening angle value error value of the valve plate 2 is reduced.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the communication may be direct, indirect via an intermediate medium, or internal to both elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A smart valve, comprising:

the air-conditioning valve comprises a valve body (1), wherein an air duct (11) is arranged on the valve body (1);

the valve plate (2) is arranged along the section of the air duct (11) in a sliding manner and can cut off the air duct (11); and

and the driving system (3) is connected with the valve body (1) and the valve plate (2) and controls the valve plate (2) to slide to a preset position from the outside of the air duct (11) to the inside of the air duct (11) in a reciprocating manner along the intercepting surface.

2. The intelligent valve according to claim 1, wherein the inner wall of the air duct (11) is further provided with a valve sheet groove (12) for accommodating the sliding of the valve sheet (2).

3. The intelligent valve according to claim 1, wherein the valve plate (2) comprises a first valve plate (21) and a second valve plate (22), the first valve plate (21) and the second valve plate (22) are oppositely opened and closed, the sliding directions are opposite, and when the first valve plate (21) and the second valve plate (22) are closed, the valve plate (2) cuts off the air duct (11).

4. A smart valve according to claim 3 wherein the closed ends of the first valve plate (21) and the second valve plate (22) are provided with correspondingly arranged sealing members (23).

5. The intelligent valve according to claim 3, wherein the first valve plate (21) body and the second valve plate (22) body are both in a semi-circular sheet structure, a rotating shaft hole (24) is formed in the same side, the driving system (3) is connected with the rotating shaft hole (24), and can control the first valve plate (21) and the second valve plate (22) to axially rotate and slide along the rotating shaft hole (24) and open and close to a preset opening and closing angle.

6. The intelligent valve according to claim 5, wherein the driving system (3) comprises a rotating shaft (31), a transmission member (32), a motor (33) and a control box (34), the rotating shaft (31) is fixedly arranged in the rotating shaft hole (24), one end of the rotating shaft is connected with the motor (33) through the transmission member (32), and the control box (34) can receive an external command and send the external command to the motor (33), so that the working state of the motor (33) is controlled.

7. The intelligent valve according to claim 6, further comprising a motor support (35) and a motor cover (36), wherein one end of the motor support (35) is fixedly connected with the valve body (1), the other end of the motor support is fixedly used for supporting the motor (33), and the motor cover (36) covers the motor (33) and the outer side of the motor support (35).

8. A smart valve according to claim 6, wherein the motor (33) is a gearmotor with a braking system.

9. The intelligent valve according to any one of claims 1 to 8, wherein a temperature sensor (13) and an alarm device (14) for monitoring the temperature in the air duct (11) are further arranged on the valve body (1), the temperature sensor (13) is connected with the driving system (3), and when the temperature sensor (13) detects that the temperature in the air duct (11) exceeds a preset value, the driving system (3) controls the valve plate (2) to block the air duct (11), and the alarm device (14) is triggered to give an alarm.

10. The intelligent valve according to claim 9, further comprising a power-off protection system, wherein when the temperature in the air duct (11) exceeds a preset value and the valve plate (2) cuts off the air duct (11), the power-off protection system cuts off the power supply of the driving system (3).

11. The intelligent valve according to claim 1, further comprising a mounting seat (16), wherein the mounting seat (16) is disposed at the air outlet end of the air duct (11), and comprises a fixing sleeve (161) and an external connection plate (162), the fixing sleeve (161) is sleeved on the outer wall of the air outlet end of the air duct (11), the inner end of the fixing sleeve is connected with the external connection plate (162), and the outer end of the fixing sleeve is provided with a convex elastic hook (1611).

12. The intelligent valve according to claim 11, wherein the outer wall of the fixing sleeve (161) is further provided with a sol groove (1612), and the sol groove (1612) is further provided with a through hole (1613) communicated with the inner wall of the fixing sleeve (161).

13. A centralized smoke exhaust system comprises an outdoor host (40), a public flue (50), an indoor flue (60) and a terminal (70) which are sequentially communicated, and is characterized by further comprising the intelligent valve of any one of claims 1 to 12, wherein the public flue (50) and the indoor flue (60) are communicated through the intelligent valve, and the outdoor host (40) and the terminal (70) are respectively provided with an operation device for controlling the driving system (3).

14. The centralized smoke evacuation system of claim 13, wherein a power socket (17) for supplying power to the terminal (70) is fixedly arranged at one end of the intelligent valve.