CN116972178A

CN116972178A - Flat-open type air valve

Info

Publication number: CN116972178A
Application number: CN202311148813.0A
Authority: CN
Inventors: 游泳
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-09-06
Filing date: 2023-09-06
Publication date: 2023-10-31

Abstract

The invention discloses a flat-open configuration air valve, which comprises: the frame is arranged in the air pipe, the outer peripheral wall of the frame is fixed against the inner peripheral wall of the air pipe, and the frame is of an integrated structure; the valve plate of flat-open installation, one side of valve plate is installed through the articulated mode on the perpendicular frame of frame, can wind perpendicular frame is rotatory in order to the switching, under the open condition of valve plate, the tuber pipe forms the passageway, under the closed condition of valve plate, the tuber pipe is blocked. The air valve has the advantages of small resistance, tight sealing, good heat preservation and insulation performance and convenience in cleaning operation of the air pipe.

Description

Flat-open type air valve

Technical Field

The invention relates to the fields of ventilation, air conditioning and smoke prevention and exhaust, in particular to a novel side-hung air valve.

Background

The air valve is a general equipment name which has functions of opening and closing, adjusting, sealing and the like for air flow in the fields of ventilation, air conditioning, smoke prevention and exhaust, and the like, and is specifically divided into a regulating valve, a check valve, a fire-proof valve, a smoke prevention and fire-proof valve, a smoke exhaust valve and the like according to the functions, wherein the fire-proof valve, the smoke prevention and fire-proof valve and the smoke exhaust valve are collectively called as a fire-proof air valve. The shape can be divided into rectangle and circle. The rectangular air valve with the traditional structural type is provided with a plurality of rotating shafts horizontally, the valve plate is parallel to the ground and rotates in a mutually parallel or opposite mode, and the valve plate and the rotating shafts are all exposed in the middle of air flow of the air pipe.

The conventional rotary shaft horizontal configuration damper has the following disadvantages and problems:

1. the resistance is too great.

1. When the air valve is in an open state, the valve plate and the rotating shaft are all exposed in air flow of the air pipe, so that the wind resistance is larger, and particularly, the larger the included angle between the valve plate and the air flow is, the larger the resistance is.

2. For the check valve in the air valve, a high air speed is required for air flow to overcome resistance formed by the gravity of the valve plate and the hammer when the check valve is opened, so that the air resistance of the check valve is overlarge. In particular, when used in a fume exhaust system, oil stains accumulated on the rotating shaft and the valve plate are adhered, so that the valve plate is difficult to open or cannot be opened.

3. Under the conditions of higher wind speed and larger air flow fluctuation, the valve plate is easy to shake to generate vibration and noise, and under the condition of longer running time, the rotating shaft of the air valve and the valve plate are easy to break and fall off caused by fatigue.

2. The sealing is not tight.

1. The valve plate of the air valve is in plane lap joint seal with the air pipe, and the valve plate and the side wall of the air pipe are not in a sealing structure, and the lap joint contact surface is uneven, so that the air tightness is not tight due to various factors such as greasy dirt and sundries.

2. Part of the air valves are provided with sealing strips on the valve plate side or the air pipe side, but the sealing strips are easy to damage due to friction and shift when the valve plate rotates, so that the sealing is not tight, and frequent replacement is needed.

3. The air valve has more structural gaps between the valve plate and the air pipe, so that the air tightness is not tight. And the shaft sleeve of the hole penetrating air pipe is more, so that the sealing is not tight on one hand, and the rotating shaft is easy to rotate and clamp due to stress deformation on the other hand.

4. For the check valve in the air valve, the weight moment of the hammer is smaller when the valve plate is close to be closed, so that the valve plate is not closed in place.

3. Affecting the cleaning of the air duct.

The valve plate and the rotating shaft of the air valve are horizontally arranged in the air pipe, the mutual distance is smaller, and the passing of manual or mechanical cleaning operation in the air pipe is affected.

The larger the local resistance of the air valve is, the larger the resistance of the system is, the higher the pressure head needed by the fan is, and the higher the power of the corresponding motor is, so that the energy consumption of the fan is increased, the energy conservation and emission reduction of the fan are not facilitated, and the noise and vibration of the fan are increased due to the fact that the pressure head of the fan is increased.

The check valve in the air valve is not tightly sealed, so that the air pipe leaks air/returns air, and the air pipe can cause smell return/oil return for a bathroom exhaust system and a kitchen oil fume exhaust system. This is also disadvantageous in locations where insulation and freeze protection are required and where a positive pressure is required.

The air valve has relatively poor heat preservation performance, and the air valve which directly communicates with the air outlet and the air inlet on the outer wall cannot preserve heat in winter, which is unfavorable for heat preservation and freezing prevention of air pipe equipment.

The national relevant regulations and regulations have the requirement of regular checking and cleaning of ventilation and air conditioning air pipes, and particularly the cleaning frequency of the fume exhaust air pipes with fire risks is relatively dense. The blast gate in the tuber pipe influences the cleaning operation of tuber pipe, needs more cleaning mouths or dismouting tuber pipe to wash.

Accordingly, new techniques are needed to address the above disadvantages and problems with existing conventional configuration dampers.

Disclosure of Invention

The invention aims to provide a novel side-hung type air valve which can be applied to air valves such as regulating valves, check valves, fireproof valves, smoke-proof fireproof valves, smoke-discharging valves and the like in the fields of ventilation, air conditioning, smoke-proof and the like, and solves the problems that the existing air valve with the traditional configuration is large in resistance, poor in tightness, poor in heat preservation and heat insulation performance, influences the cleaning operation of an air pipe and the like.

The invention provides a flat-open configuration air valve, which comprises: the frame is arranged in the air pipe, the outer peripheral wall of the frame is fixed against the inner peripheral wall of the air pipe, and the frame is of an integrated structure; the valve plate of flat-open installation, one side of valve plate is installed through the articulated mode on the perpendicular frame of frame, can wind perpendicular frame is rotatory in order to the switching, under the open condition of valve plate, the tuber pipe forms the passageway, under the closed condition of valve plate, the tuber pipe is blocked.

In a further preferred embodiment, the frame is provided by the air duct flange, i.e. the frame is integrated with the air duct flange.

In another preferred embodiment, the frame is a rectangular frame, including at least four rims.

In another preferred embodiment, the rim is formed as a single piece with the frame by bolting or welding, riveting, etc.

In another preferred embodiment, the frame is fixed to the air duct by means of bolts, rivets or the like.

In another preferred embodiment, the hinge means includes, but is not limited to, a pivot connection or a hinge connection.

In another preferred example, for a large-caliber air pipe, the cross section of the air pipe can be paved by paving and combining the air valves.

In another preferred embodiment, the valve plate comprises a front valve plate positioned on a windward side and a rear valve plate positioned on a leeward side, a first side of the front valve plate is vertically arranged on a vertical frame of the frame in a first hinging manner, the front valve plate can rotate around the vertical frame and drive the rear valve plate to move so as to be opened and closed, a third side of the rear valve plate is connected with a second side of the front valve plate opposite to the first side in a second hinging manner, and a fourth side of the rear valve plate abuts against the side wall of the air pipe to move. In another preferred embodiment, the fourth side of the back valve plate is restrained from movement against the side wall of the air duct by a stop means, wherein the stop means is, but is not limited to, an elastic member or a guide wheel assembly.

In another preferred embodiment, the limiting device enables a space of a changeable triangular prism to be formed between the valve plate and the side wall of the air pipe, and the over-wind width of the air pipe is adjusted.

In another preferred embodiment, the limiting device is a guide wheel assembly, the guide wheel assembly comprises a guide wheel, the guide wheel is arranged on the fourth side of the rear valve plate, and the guide wheel rolls and/or slides on the side wall of the air pipe along with the opening and closing of the valve plate.

In another preferred embodiment, the guide wheel assembly further comprises a guide groove arranged on the side wall of the air pipe, and the guide wheel can roll and/or slide along the guide groove.

In another preferred embodiment, the guide groove is a horizontal C-shaped guide rail.

In another preferred embodiment, the guide wheel moves linearly within the C-shaped track.

In another preferred embodiment, the valve plate limiting device is an elastic piece, the moment of the elastic piece makes the fourth side of the rear valve plate run along the side wall of the air pipe,

wherein the elastic piece is a torsion spring which is arranged on the shaft of a second hinged hinge between the front valve plate and the rear valve plate,

Or the elastic piece is a tension spring, one end of the tension spring is fixedly connected with the front valve plate, the other end of the tension spring is fixedly connected with the rear valve plate, and the tension spring is arranged on one side of the valve plate, which faces the side wall of the air pipe.

In another preferred embodiment, the hinge is a spindle hinge.

In another preferred embodiment, the first valve plate is fixedly connected with the first rotating shaft, the second valve plate is fixedly connected with the second rotating shaft, the frame is provided with a support seat matched with the first rotating shaft and the second rotating shaft respectively, the first rotating shaft and the second rotating shaft are rotatable in the support seat respectively, and the valve plate is horizontally opened and closed relative to the frame in a mode of being perpendicular to the ground.

In another preferred embodiment, the valve plate is controlled to open and close by driving the rotating shaft.

In another preferred embodiment, the support of the shaft is mounted on the vertical rim of the frame by means of bolts, rivets or the like.

In another preferred embodiment, the support includes an upper support and a lower support.

In another preferred embodiment, the first hinge is a hinge.

In another preferred embodiment, the number of the valve plates is two, and the two valve plates are a first valve plate and a second valve plate respectively, wherein the air valve comprises a split transmission mechanism, and the split transmission mechanism is used for simultaneously driving the opening and closing of the two valve plates.

In another preferred embodiment, the two valve plates are respectively fixed on the vertical frames at two sides and are relatively flat-open.

In another preferred embodiment, the frame comprises a vertical middle frame, and the position of the middle frame corresponds to the joint position of the two valve plates.

In another preferred embodiment, the split transmission mechanism is a worm and gear split transmission mechanism, a connecting rod split transmission mechanism or a gear split transmission mechanism;

in the worm and gear split transmission mechanism, the worm and gear split transmission mechanism comprises a first worm wheel, a second worm wheel, a first worm in matched connection with the first worm wheel, a second worm in matched connection with the second worm wheel and a transmission shaft for connecting the first worm and the second worm, wherein the first worm, the transmission shaft and the second worm form a transmission assembly, the first worm wheel is fixedly connected with a first rotating shaft connected with a first valve plate in a concentric manner, and the second worm wheel is fixedly connected with a second rotating shaft connected with a second valve plate in a concentric manner;

In the connecting rod split transmission mechanism, the connecting rod split transmission mechanism comprises a driving rod, a driven rod, a first transmission rod connected with the driving rod, a second transmission rod connected with the driven rod and a transmission sleeve rod used for connecting the first transmission rod and the second transmission rod, wherein the first transmission rod, the second transmission rod and the transmission sleeve rod are connected into a transmission assembly, a first end of the driving rod is fixedly connected with a first rotating shaft connected with a first valve plate, a second end of the driving rod is hinged with a first end of the transmission assembly, a first end of the driven rod is fixedly connected with a second rotating shaft connected with a second valve plate, a second end of the driven rod is hinged with a second end of the transmission assembly, and the driving rod and the driven rod are respectively positioned at two sides of a central connecting line of the rotating shaft;

in the gear split transmission mechanism, the gear split transmission mechanism includes:

the first driven gear is fixedly connected with a first rotating shaft connected with the first valve plate in a concentric manner;

The first driving gear is in meshed connection with the first driven gear;

the second driven gear is fixedly connected with a second rotating shaft connected with the second valve plate in a concentric manner;

the second driving gear is in meshed connection with the second driven gear; and

one end of the transmission shaft is fixedly connected with the first driving gear in a concentric manner, and the other end of the transmission shaft is fixedly connected with the second driving gear in a concentric manner;

the transmission shaft, the first driving gear and the second driving gear form a transmission assembly.

In another preferred embodiment, the gear split transmission comprises a bevel gear split transmission or a 45 ° bevel gear split transmission. Gears in the bevel gear split transmission mechanism are bevel gears; the gears in the 45-degree bevel gear split transmission mechanism are all 45-degree bevel gears.

In another preferred embodiment, the arm of force of the driving lever to the first rotation shaft is the same as the arm of force of the driving lever to the second rotation shaft.

In another preferred embodiment, when the first valve plate and the second valve plate are in the fully opened state and the fully closed state, an included angle between the driving rod and the driven rod and the side wall of the air pipe is 45 degrees.

In another preferred embodiment, the rotation angle of the driving rod and the driven rod is 90 ° in the process of the first valve plate and the second valve plate from the fully opened state to the fully closed state.

In another preferred embodiment, the transmission assembly is driven in rotation by a motor or manually by a handle.

In another preferred embodiment, the damper includes a seal assembly disposed between the valve plate and the frame for providing a full seal between the valve plate and the frame in a closed condition of the valve plate.

In another preferred embodiment, the seal assembly comprises:

a first sealing member provided on an outer periphery of the valve plate, including a first groove and a first gasket, wherein the first gasket is located at a bottom inside the first groove; and

a second sealing member provided on an inner periphery of the frame, including a second groove and a second gasket, wherein the second gasket is located at a bottom inside the second groove;

under the closing state of the valve plate, one groove wall of the first groove is propped against the second sealing gasket positioned in the second groove, and one groove wall of the second groove is propped against the first sealing gasket positioned in the first groove.

In another preferred embodiment, the sealing assembly includes a gasket provided on the outer periphery of the valve plate or the frame, and a protrusion provided on the outer periphery of the frame or the valve plate; and in the closing state of the valve plate, the bulge is abutted against the sealing gasket to form a seal.

In another preferred embodiment, the air valve includes an automatic resetting device for providing a force for driving the valve plate to close in an opened state of the valve plate, one end of the automatic resetting device is connected with the valve plate, the other end of the automatic resetting device is connected with the frame, and the automatic resetting device includes but is not limited to providing a restoring force through an elastic member and a hydraulic device.

In another preferred embodiment, the rotating shaft is provided with a spring, and the torque of the spring acts on the valve plate, which is one of external forces for closing the valve plate, so that vibration and noise caused by the impact of air flow on the valve plate can be relieved.

In another preferred embodiment, one end of the automatic resetting device is arranged on the rotating shaft, and the other end of the automatic resetting device is arranged on the frame or the support.

In another preferred embodiment, the rotating shaft and the valve plate are fixed by hinge connection.

In another preferred embodiment, one end of the automatic resetting device is arranged on the hinge, and the other end of the automatic resetting device is arranged on the frame or the support.

In another preferred embodiment, a roller device is arranged at the bottom of the valve plate, and the valve plate moves on the bottom plate of the air pipe through the roller device.

In another preferred embodiment, the roller means is provided with spring compensation to accommodate slight deformation of the floor of the ductwork.

In another preferred embodiment, the roller means is a spherical castor.

In another preferred embodiment, the valve plate is provided with a heat insulating layer or a fireproof heat insulating layer.

In another preferred example, the fireproof heat-insulating layer is a centrifugal glass wool fireproof heat-insulating layer.

In another preferred embodiment, a protective layer is arranged outside the heat insulation layer.

In another preferred embodiment, a reinforcing plate is provided on the valve plate.

In another preferred embodiment, the frame includes a vertically intermediate rim.

In another preferred embodiment, the two valve plates are respectively connected to vertical side frames on two sides, and the position of the middle side frame corresponds to the closing position of the two valve plates.

In another preferred embodiment, the two valve plates are respectively connected to the middle frame in the vertical direction, and the vertical frames on two sides correspond to the closed positions of the two valve plates.

In another preferred embodiment, the damper comprises a fire damper comprising an actuator comprising a temperature sensor disposed in the air duct for sensing the temperature of the forward air flow.

It should be noted that, the "forward direction" in the forward direction air flow refers to the flow direction of the air in the air duct under the driving of the fan.

In another preferred embodiment, for the fire damper and the smoke exhaust fire damper in the fire damper, the fire damper and the smoke exhaust fire damper are in a normally open state in a non-response state, that is, the valve plate is abutted against or close to the side wall of the air duct, the air duct forms a passage, and when the temperature sensor senses that the temperature of the forward airflow exceeds a set temperature threshold, the valve plate is closed, and the air duct is blocked.

In another preferred embodiment, for the smoke exhaust valve in the fire damper, the smoke exhaust valve is in a normally closed state in a non-response state, that is, the valve plate is arranged against the frame of the frame, the air pipe is blocked, the smoke exhaust valve is opened according to an instruction of a fire alarm host, and when the temperature sensor senses that the temperature of the forward airflow exceeds a set temperature threshold, a linkage control signal for closing the smoke exhaust fan is provided for the fire alarm host.

In another preferred embodiment, the damper comprises a fire damper comprising an actuator comprising an electromagnetic locking assembly;

for the fire damper and the smoke exhaust fire damper in the fire damper, which are in a normally open state in a non-response state, the electromagnetic locking assembly comprises a magnetic part arranged on the valve plate and an electromagnet arranged on the air pipe,

under the condition of electrifying, the electromagnet generates magnetic force to attract the magnetic piece so as to attract the valve plate to abut against the air pipe, and a passage is formed in the air pipe;

under the condition of power failure, the electromagnet loses the magnetic force attracting the magnetic piece, and the valve plate is closed;

for the smoke exhaust valve in the fireproof air valve, the smoke exhaust valve is in a normally closed state in a non-response state, the electromagnetic locking assembly comprises a magnetic piece arranged on the valve plate and an electromagnet arranged on the frame, under the condition of electrifying, the electromagnet generates magnetic force to attract the magnetic piece to further attract the valve plate to abut against the frame, and the valve plate is in a closed state;

when receiving a valve opening signal of a fire alarm host to discharge smoke, the electromagnet is powered off, the electromagnet loses magnetic attraction, the valve plate is opened, and a passage is formed in the air pipe;

When the smoke discharge is finished, the valve plate is reset, the electromagnet is electrified to generate magnetic force to attract the magnetic piece so as to attract the valve plate to abut against the frame, and the valve plate is in a closed state again.

In another preferred embodiment, for the fire damper and the smoke exhaust fire damper, in the case of power failure, the electromagnet loses the magnetic force attracting the magnetic member, and the valve plate is closed under the action of the energy storage action device.

In another preferred embodiment, the magnetic member may be, but is not limited to, the shaft made of carbon steel, the valve plate itself, or a magnetic member provided on the valve plate.

In another preferred example, for the smoke exhaust valve, when receiving a valve opening signal of a fire alarm host for smoke exhaust, the electromagnet is powered off, the electromagnet loses magnetic attraction, the energy storage action device opens the valve plate, and a passage is formed in the air pipe.

In another preferred embodiment, for the smoke exhaust valve, at the end of smoke exhaust, the valve plate is closed by the connecting rod split transmission mechanism, the electromagnet is electrified to generate magnetic force to attract the magnetic piece and further attract the valve plate to abut against the frame, and the valve plate is in a closed state again.

In another preferred embodiment, the electromagnetic locking assembly comprises a first magnet arranged on the valve plate, a second magnet which is arranged on the air pipe and attracts the first magnet mutually, and an electromagnet arranged on the side wall of the air pipe;

under the condition of power failure, the electromagnet does not have magnetic force, the first magnet and the second magnet are attracted to each other, the valve plate abuts against the air pipe, and a passage is formed in the air pipe;

when the electromagnet is electrified, the electromagnet generates a magnetic force which is repulsive to the first magnet, the magnetic force is larger than the attractive magnetic force generated by the second magnet, and the valve plate is closed under the action of repulsive magnetic force.

In another preferred embodiment, the damper comprises a fire damper comprising an actuator comprising an energy storage action device;

for the fire damper and the smoke exhaust fire damper in the fire damper, the fire damper and the smoke exhaust fire damper are in a normally open state in a non-response state, and the energy storage action device is used for providing acting force required by closing the valve plate;

and the smoke exhaust valve in the fireproof air valve is in a normally closed state in a non-response state, and the energy storage action device is used for providing acting force required by opening the valve plate.

In another preferred embodiment, one end of the energy storage action device is connected with the valve plate, and the other end of the energy storage action device is connected with the frame, and the energy storage action device comprises but is not limited to providing restoring force through an elastic piece and a hydraulic device.

The beneficial effects of the invention are as follows:

compared with the prior air valve with traditional configuration, in which the valve plate and the rotating shaft are all horizontally exposed in the air flow of the air pipe, the air valve with the flat-open configuration is close to the inner walls of the two sides of the air pipe when being opened, and on one hand, the resistance generated by the valve plate and the rotating shaft is smaller; on one hand, the valve plate and the rotating shaft are close to the side wall of the air pipe and are shielded by the integrated frame, so that the impact of the air flow on the valve plate and the rotating shaft is reduced while the influence on the air flow is reduced, and the possibility of fatigue damage of the valve plate and the rotating shaft is avoided; on the other hand, the valve plate close to the side wall of the air pipe merges the ventilation area of the air pipe which is split by the valve plate and the rotating shaft of the air valve with the traditional configuration into two larger parts, thereby avoiding the influence on the cleaning operation of the air pipe.

For the check valve in the air valve, the valve plate/hammer gravity resistance of the valve opening can be changed into the rotation resistance of the rotating shaft through the flat-open valve plate, so that the required wind speed of the valve opening and the resistance of the air valve are greatly reduced. The rotary shaft springs with different parameters are selected, so that the requirement of different systems on the design working pressure difference of the check valve can be met.

The resistance of the air valve is reduced, the total resistance of the system can be reduced, the power of a fan motor can be correspondingly reduced, the noise and vibration of the fan operation can be reduced, and the energy saving and consumption reduction of the fan operation for a long time can be facilitated.

Through labyrinth seal, the sealing performance of the air valve is improved, and the sealing gasket is pressed more tightly as the reverse pressure is larger, the sealing performance is better, and zero leakage can be achieved. And the contact area with the sealing gasket is small, so that the sealing gasket is not easy to adhere by greasy dirt and the like, and the opening resistance is increased.

The valve plate can be provided with heat preservation and heat insulation layers with different standards according to the needs, and the heat preservation and heat insulation performance and the sound insulation performance of the air valve are improved by matching with the outer heat preservation and heat insulation layer of the air pipe of the valve body.

For the check valve in the air valve, through the integrated frame, the air pipe of the valve body is not provided with the shaft sleeve which is easy to leak, the air valve can achieve higher sealing performance, the strength and the rigidity of the air valve can be made larger, and higher air pressure can be borne.

As for the check valve in the air valve, the application range of the check valve can be expanded due to the enhanced tightness and heat preservation performance, for example, an air inlet of an air conditioning unit (AHU or PAU) can be used for replacing an electric air valve with conventional design, an air outlet and an air inlet of the air through on an outer wall can also be used for avoiding cold air backflow, and the heat preservation of an air pipe is enhanced.

It is understood that within the scope of the present invention, the above-described technical features of the present invention and technical features specifically described below (e.g., in the examples) may be combined with each other to constitute new or preferred technical solutions. And are limited to a space, and are not described in detail herein.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of a side-by-side configuration damper in one example of the invention;

FIG. 2 is a rear view of the air valve of the side-by-side configuration of FIG. 1;

FIG. 3 is a cross-sectional view of section A-A of FIG. 2;

FIG. 4 is a cross-sectional view of section B-B of FIG. 2;

FIG. 5 is a cross-sectional view of section C-C of FIG. 2;

fig. 6 is an enlarged view of the portion M of fig. 4;

fig. 7 is an enlarged view of the portion N in fig. 3;

FIG. 8 is a perspective view of a side-by-side configuration damper with a worm gear split gear train in one example of the invention;

FIG. 9 is a top view of FIG. 8;

FIG. 10a is a schematic illustration of the movement of a valve plate and a link split gear train of a side-by-side air valve having a link split gear train in accordance with an example of the present invention, wherein the valve plate is in a fully open state;

FIG. 10b is a schematic illustration of the movement of a valve plate and a link split gear train of a side-by-side air valve having a link split gear train in accordance with an example of the present invention, wherein the valve plate is in a fully closed state;

FIG. 10c is a schematic illustration of the movement of a valve plate and a link split gear train of a side-by-side air valve having a link split gear train in accordance with an example of the present invention, wherein the valve plate is in an intermediate state;

FIG. 10D is a cross-sectional view of section D-D of FIG. 10 c;

FIG. 10e shows the trend of the rotational angle of the driving and driven levers in the link split transmission mechanism;

FIG. 11 is a top view of a side-by-side configuration damper with a gear split transmission in one example of the invention;

fig. 12 is a top view of a side-hung air valve having a valve plate composed of a front valve plate and a rear valve plate in one example of the invention.

In the drawings, each is indicated as follows:

1-an air pipe;

2-a frame;

2 a-upper rim;

2 b-lower rim;

2 c-left side frame;

2 d-right frame;

2 e-middle frame;

3-an air pipe flange;

4-a valve plate;

4 a-a first valve plate;

4 b-a second valve plate;

5-rotating shaft;

6 a-upper support;

6 b-a lower support;

7-a bearing;

8-a spring;

9-U-shaped grooves;

10-reinforcing plates;

11-an insulating layer;

12-ball universal wheels;

13-a protective layer;

14-sealing gasket;

15-a first worm gear;

16-a second worm gear;

17-a first worm;

18-a second worm;

19-a transmission shaft;

20-handle;

21-an actuator;

22-an active lever;

23-a driven rod;

24-a first transmission rod;

25-a second transmission rod;

26-a transmission loop bar;

27-a first driven gear;

28-a first drive gear;

29-a second driven gear;

30-a second drive gear;

31-a front valve plate;

32-a rear valve plate;

33-guide wheels;

34-hinge.

Detailed Description

The invention provides a flat-open type air valve, which aims at the defects of the existing type air valve and the problems of the air valve in production, installation and use links, and firstly develops the flat-open type air valve, when the flat-open type air valve is opened, a valve plate is abutted against the inner walls of two sides of an air pipe, so that the wind resistance caused by the valve plate and a rotating shaft is reduced, and meanwhile, the stress conditions of the valve plate and the rotating shaft are improved, so that the possibility of fatigue damage is avoided, and in addition, the air pipe is convenient to clean; the design of the comprehensive labyrinth seal greatly improves the sealing performance of the valve; the multiple split transmission mechanisms realize simultaneous linkage opening and closing of the double valve plates; the introduction of the actuating mechanism improves the automation of the control of the air valve, and the invention is completed on the basis.

Terminology

As used herein, "forward" in a forward airflow refers to the direction of flow of air in the ductwork under fan drive.

The invention will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. Furthermore, the drawings are schematic representations, and thus the apparatus and device of the present invention are not limited by the dimensions or proportions of the schematic representations.

It should be noted that in the claims and the description of this patent, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Example 1

Referring to fig. 1-2, the damper of the present embodiment includes a frame 2 and a valve plate 4 mounted in a split manner.

The frame 2 is fixed in the air duct 1 through an air duct flange 3, and the outer peripheral wall of the frame 2 is arranged against the inner peripheral wall of the air duct 1. The frame 2 is an integral structure, and comprises an upper frame 2a, a lower frame 2b, a left frame 2c, a right frame 2d and a middle frame 2e, wherein the frames are spliced or welded, riveted and the like through bolts to form the integral frame 2.

One side of the valve plate 4 is hinged to a vertical frame (a left frame 2c and/or a right frame 2d and/or a middle frame 2 e) of the frame 2, and can rotate around the vertical frame to open and close, in an open state of the valve plate 4, the air duct 1 forms a passage, and in a closed state of the valve plate 4, the air duct 1 is blocked. The hinge means includes, but is not limited to, a pivot connection or a hinge connection, which is shown in the drawings as a pivot hinge means.

The number of the valve plates 4 is two (according to actual needs, the number of the valve plates 4 can also be 1), the two valve plates 4 are respectively a first valve plate 4a and a second valve plate 4b, the first valve plate 4a is fixedly connected with a first rotating shaft 5, the second valve plate 4b is fixedly connected with a second rotating shaft 5, supports matched with the first rotating shaft 5 and the second rotating shaft 5 are respectively arranged on the frame 2, the first rotating shaft 5 and the second rotating shaft 5 are respectively rotatable in the supports through bearings 7, and the valve plates 4 are horizontally opened and closed relative to the frame 2 in a mode of being perpendicular to the ground. The support of the rotating shaft 5 is arranged on the vertical side frame of the frame 2 in a bolt, riveting and other modes, and the two valve plates 4 are relatively flat-open. The support comprises an upper support 6a and a lower support 6b. The position of the vertical middle frame corresponds to the position where the two valve plates 4 are engaged.

For the large-caliber air pipe, the section of the air pipe can be paved by paving and combining the air valves.

The valve plate 4 may be rotated by a motor drive or manually by a handle 20.

Preferably, a roller device is provided at the bottom of the valve plate 4, by means of which the valve plate 4 is moved over the bottom plate of the air duct 1. The roller means may be provided with a spring 8 compensation to accommodate slight deformations of the floor of the air duct 1. The roller means is a spherical castor 12.

Preferably, the valve plate 4 is provided with a heat preservation layer 11 or a fireproof heat insulation layer. The fireproof heat-insulating layer is a centrifugal glass wool fireproof heat-insulating layer. Further preferably, a protective layer 13 is provided outside the heat insulating layer 11.

Preferably, a reinforcing plate 10 is provided on the valve plate 4.

Example 2

The damper of this embodiment is similar to embodiment 1, except that the damper of this embodiment further includes a seal assembly disposed between the valve plate 4 and the frame 2 for providing a full seal between the valve plate 4 and the frame 2 in the closed state of the valve plate 4.

The sealing assembly comprises a gasket 14 provided on the outer periphery of the valve plate 4 or the frame 2, and a projection provided on the outer periphery of the frame 2 or the valve plate 4; in the closed state of the valve plate 4, the protrusion is abutted against the gasket 14 to form a seal.

Preferably, the seal assembly includes a first seal member and a second seal member, see FIGS. 3-4 and 6-7. The first sealing member is provided on the outer periphery of the valve plate 4, and includes a first U-shaped groove 9 (a groove formed by a flange of the valve plate 4, the heat insulating layer 11, and the like) and a first gasket 14, wherein the first gasket 14 is located at the bottom inside the first U-shaped groove 9; the second sealing member is arranged on the inner periphery of the frame 2 and comprises a second U-shaped groove 9 and a second sealing gasket 14, wherein the second sealing gasket 14 is positioned at the bottom part in the second U-shaped groove 9; in the closed state of the valve plate 4, a groove wall (i.e., the protrusion) of the first U-shaped groove 9 abuts against the second sealing gasket 14 located in the second U-shaped groove 9, and a groove wall (i.e., the protrusion) of the second U-shaped groove 9 abuts against the first sealing gasket 14 located in the first U-shaped groove 9.

Example 3

Referring to fig. 5, the air valve of the present embodiment is similar to embodiment 1, except that the air valve of the present embodiment further includes an automatic resetting device for providing a force for driving the valve plate 4 to close in an opened state of the valve plate 4, one end of the automatic resetting device is disposed on the rotating shaft 5 (when the connection manner is the rotating shaft connection) or on the hinge 34 (when the connection manner is the hinge connection) (i.e., indirectly fixedly connected with the valve plate 4), and the other end of the automatic resetting device is connected with the frame 2, and the automatic resetting device includes but is not limited to providing a restoring force through an elastic member and a hydraulic device, and the elastic member may be a spring 8.

Example 4

As shown in fig. 8 to 9, the damper of the present embodiment is similar to embodiment 1, except that the damper of the present embodiment further includes a split transmission mechanism for simultaneously driving the opening and closing of the two valve plates 4.

The split transmission mechanism in the embodiment is a worm and gear split transmission mechanism. In the worm gear and worm split transmission mechanism, the worm gear and worm split transmission mechanism comprises a first worm wheel 15, a second worm wheel 16, a first worm 17 which is connected with the first worm wheel 15 in a matched manner, a second worm 18 which is connected with the second worm wheel 16 in a matched manner, and a transmission shaft 19 which is used for connecting the first worm 17 and the second worm 18, wherein the first worm 17, the transmission shaft 19 and the second worm 18 form a transmission assembly, the first worm wheel 15 is fixedly connected with a first rotating shaft 5 which is connected with a first valve plate 4a in a concentric manner, and the second worm wheel 16 is fixedly connected with a second rotating shaft 5 which is connected with a second valve plate 4b in a concentric manner.

Example 5

As shown in fig. 10a to 10d, the damper of the present embodiment is similar to embodiment 4, except that the split transmission mechanism of the present embodiment is a link split transmission mechanism.

In the connecting rod split transmission mechanism, the connecting rod split transmission mechanism comprises a driving rod 22, a driven rod 23, a first transmission rod 24 connected with the driving rod 22, a second transmission rod 25 connected with the driven rod 23 and a transmission sleeve rod 26 used for connecting the first transmission rod 24 and the second transmission rod 25, wherein the first transmission rod 24, the second transmission rod 25 and the transmission sleeve rod 26 are connected to form a transmission assembly, a first end of the driving rod 22 is fixedly connected with a first rotating shaft 5 connected with a first valve plate 4a, a second end of the driving rod 22 is hinged with a first end of the transmission assembly, a first end of the driven rod 23 is fixedly connected with a second rotating shaft 5 connected with a second valve plate 4b, a second end of the driven rod 23 is hinged with a second end of the transmission assembly, the driving rod 22 and the driven rod 23 are respectively positioned on two sides of a central connecting line of the rotating shaft 5, and the driving rod 22 rotates while the driven rod 23 is driven by the transmission assembly, so that the first valve plate 4a and the second valve plate 4b rotate in a split mode.

The arm of force of the driving lever 22 to the first rotating shaft 5 is the same as the arm of force of the driving lever to the second rotating shaft 5.

When the first valve plate 4a and the second valve plate 4b are in the fully opened state and the fully closed state, the included angle between the driving rod 22 and the driven rod 23 and the side wall of the air pipe 1 is 45 degrees.

In the process of the first valve plate 4a and the second valve plate 4b from the fully opened state to the fully closed state, the rotation angles of the driving rod 22 and the driven rod 23 are 90 degrees.

The working process of the embodiment is as follows:

the driving rod 22 and the driven rod 23 of the split transmission mechanism are respectively positioned at two sides of the central connecting line of the rotating shaft 5, and the central point of the rotating shaft 5 is the same as the length L1 between the hinge point of the driving rod 22 and the first transmission rod 24 or the hinge point of the driven rod 23 and the second transmission rod 25. When the valve plate 4 is in the fully opened and fully closed state, the included angles between the driving rod 22 and the driven rod 23 and the side wall of the air pipe 1 are 45 degrees, and the rotation angles of the driving rod 22 and the driven rod 23 from the fully opened state to the fully closed state of the valve plate 4 are 90 degrees. When the valve plate 4 is in the fully closed state, the driving rod 22 is rotated clockwise by an angle alpha 1 through the motor or the handle, the valve plate 4 forming a fixed included angle with the driving rod 22 through the rotating shaft 5 is also rotated clockwise by the same angle alpha 1, meanwhile, the driving rod 22 pushes the driven rod 23 to rotate anticlockwise by an angle alpha 2 through the transmission rod assembly, and the valve plate 4 forming a fixed included angle with the driven rod 23 through the rotating shaft 5 is also rotated anticlockwise by the same angle alpha 2. The rotation angle α1 of the driving lever 22 is equal to or larger than the rotation angle α2 of the driven lever 23, the difference Δα=α1- α2 is related to L1, the distance between the center points of the rotating shaft 5 and α1, and the trend of change is as shown in fig. 10e, α1=α2=0 ° when the valve plate is fully opened, and α1=α2=90 ° when the valve plate is fully closed.

In order to reduce the difference Δα, L1 between the rotation angle α1 of the driving lever 22 and the rotation angle α2 of the driven lever 23, it is necessary to be 50mm or less.

Example 6

As shown in fig. 11, the damper of the present embodiment is similar to embodiment 4, except that the split gear mechanism of the present embodiment is a gear split gear mechanism.

In a gear split transmission, the gear split transmission comprises: a first driven gear 27, a first driving gear 28, a second driven gear 29, a second driving gear 30 and a drive shaft 19.

The first driven gear 27 is fixedly connected with the first rotating shaft 5 connected with the first valve plate 4a in a concentric manner; the first driving gear 28 is in meshed connection with the first driven gear 27; the second driven gear 29 is fixedly connected with the second rotating shaft 5 which is connected with the second valve plate 4b in a concentric manner; the second driving gear 30 is in meshed connection with the second driven gear 29; and one end of the transmission shaft 19 is fixedly connected with the first driving gear 28 in a concentric manner, and the other end of the transmission shaft 19 is fixedly connected with the second driving gear 30 in a concentric manner; wherein the drive shaft 19, the first drive gear 28 and the second drive gear 30 constitute a drive assembly.

The gear split transmission mechanism can be a bevel gear split transmission mechanism or a 45-degree bevel gear split transmission mechanism. Gears in the bevel gear split transmission mechanism are bevel gears; the gears in the 45-degree bevel gear split transmission mechanism are all 45-degree bevel gears.

Example 7

The damper of this embodiment is similar to embodiment 1, except that the damper of this embodiment includes an actuator 21. The actuator 21 includes a temperature sensor, an electromagnetic locking assembly, and an energy storage action device. The application object of the actuator 21 is mainly the fire damper category in dampers. The fireproof air valve is divided into a fireproof valve, a smoke exhaust fireproof valve and a smoke exhaust valve.

A temperature sensor is arranged in the air duct 1 for sensing the temperature of the forward air flow.

For the normally open fire damper and smoke exhaust fire damper, the fire damper and smoke exhaust fire damper are in a normally open state in a non-response state, namely, the valve plate 4 is abutted against or close to the side wall of the air duct 1, a passage is formed by the air duct 1, and when the temperature sensor senses that the temperature of the forward airflow exceeds a set temperature threshold, the valve plate 4 is closed, and the air duct 1 is blocked.

For a normally closed smoke exhaust valve, the smoke exhaust valve is in a normally closed state in a non-response state, namely, the valve plate 4 abuts against the frame of the frame 2 and the air pipe 1 is blocked, the smoke exhaust valve is opened according to a command of a fire alarm host, and when the temperature sensor senses that the temperature of the forward airflow exceeds a set temperature threshold, a linkage control signal for closing the smoke exhaust fan is provided for the fire alarm host.

For the fire damper and the smoke exhaust fire damper which are normally open, the energy storage action device is used for providing the acting force required by closing the valve plate 4; the electromagnetic locking assembly comprises a magnetic part arranged on the valve plate 4 and an electromagnet arranged on the air pipe 1.

One end of the energy storage action device is connected with the valve plate 4 (for example, is arranged on the rotating shaft 5 and is indirectly connected with the valve plate 4), the other end of the energy storage action device is connected with the frame 2 or the support, and the energy storage action device comprises but is not limited to providing restoring force through an elastic piece and a hydraulic device. The elastic member may be, but is not limited to, a torsion spring, a compression spring, a tension spring, and a leaf spring.

Under the condition of electrifying, the electromagnet generates magnetic force to attract the magnetic piece and further attract the valve plate 4 to abut against the air pipe 1, so that a passage is formed in the air pipe 1; under the condition of power failure, the electromagnet loses the magnetic force attracting the magnetic piece, and the valve plate 4 is closed under the action of the energy storage action device. The magnetic member may be, but is not limited to, the shaft 5 made of carbon steel, the valve plate 4 itself, or a magnetic member provided on the valve plate 4.

In another preferred embodiment, the electromagnetic locking assembly comprises a first magnet arranged on the valve plate 4, a second magnet which is arranged on the air pipe 1 and attracts the first magnet mutually, and an electromagnet arranged on the side wall of the air pipe 1;

In the case of power failure, the electromagnet does not have magnetic force, the first magnet and the second magnet attract each other, the valve plate 4 abuts against the air duct 1, and a passage is formed in the air duct 1;

in the energized state, the electromagnet generates a magnetic force which is repelled by the first magnet and is larger than the attractive magnetic force generated by the second magnet, and the valve plate 4 is closed under the action of the repulsive magnetic force.

For the smoke exhaust valve, the energy storage action device is used for providing acting force required by opening the valve plate 4, one end of the energy storage action device is connected with the valve plate 4, the other end of the energy storage action device is connected with the frame 2, and the energy storage action device comprises but is not limited to providing restoring force through an elastic piece and a hydraulic device; the electromagnetic locking assembly comprises a magnetic part arranged on the valve plate 4 and an electromagnet arranged on the frame 2, wherein under the condition of electrifying, the electromagnet generates magnetic force to attract the magnetic part so as to attract the valve plate 4 to abut against the frame 2, and the valve plate 4 is in a closed state.

When receiving a valve opening signal of a fire alarm host to discharge smoke, the electromagnet is powered off, the electromagnet loses magnetic attraction, the energy storage action device opens the valve plate 4, and a passage is formed in the air pipe 1;

When the smoke discharge is finished, the valve plate 4 is closed through the connecting rod split transmission mechanism, the electromagnet is electrified to generate magnetic force to attract the magnetic piece so as to attract the valve plate 4 to abut against the frame 2, and the valve plate 4 is in a closed state again.

The side wall of the air duct 1 is provided with an air deflector which is a plate inclined from the side wall of the air duct 1 to the superposition direction of the air duct center and the direction of the frame 2.

Example 8

As shown in fig. 12, the damper of the present embodiment is similar to embodiment 1, except that the valve plate 4 of the present embodiment includes a front valve plate 31 on the windward side and a rear valve plate 32 on the leeward side, a first side of the front valve plate 31 is vertically mounted on a vertical frame of the frame 2 by a first hinge, and is rotatable about the vertical frame and moves the rear valve plate 32 to open and close, a third side of the rear valve plate 32 is connected to a second side of the front valve plate 31 opposite to the first side by a second hinge, and a fourth side of the rear valve plate 32 moves against a side wall of the air duct 1. The fourth side of the back valve plate 32 is restrained against movement against the side wall of the air duct 1 by a restraining means, which is but not limited to an elastic member or a guide wheel assembly. The first hinge may be a rotary hinge. The second hinge is hinged by a hinge 34.

The limiting device is a guide wheel assembly, the guide wheel assembly comprises a guide wheel 33, the guide wheel 33 is arranged on the fourth side of the rear valve plate 32, and the guide wheel 33 rolls and/or slides on the side wall of the air pipe 1 along with the opening and closing of the valve plate 4. The limiting device enables a space of a changeable triangular prism to be formed between the valve plate 4 and the side wall of the air pipe 1, and the air passing width of the air pipe 1 is adjusted.

The guide wheel assembly further comprises a guide groove provided on a side wall of the ductwork 1, along which guide groove the guide wheel 33 can roll and/or slide. The guide groove is a horizontal C-shaped guide rail. The guide wheel 33 moves linearly in a C-shaped track.

The valve plate limiting device is an elastic piece, the moment of the elastic piece enables the fourth side of the rear valve plate 32 to run along the side wall of the air pipe 1, the elastic piece is a torsion spring, the torsion spring is arranged on the shaft of the second hinged hinge 34 between the front valve plate 31 and the rear valve plate 32, or the elastic piece is a tension spring, one end of the tension spring is fixedly connected with the front valve plate 31, the other end of the tension spring is fixedly connected with the rear valve plate 32, and the tension spring is arranged on one side of the valve plate 4, which faces the side wall of the air pipe 1.

All documents mentioned in this disclosure are incorporated by reference in this disclosure as if each were individually incorporated by reference. Further, it will be appreciated that various changes and modifications may be made by those skilled in the art after reading the above teachings, and such equivalents are intended to fall within the scope of the application as defined in the appended claims.

Claims

1. A side-hung configuration damper, the damper comprising:

the frame is arranged in the air pipe, the outer peripheral wall of the frame is fixed against the inner peripheral wall of the air pipe, and the frame is of an integrated structure;

the valve plate of flat-open installation, one side of valve plate is installed through the articulated mode on the perpendicular frame of frame, can wind perpendicular frame is rotatory in order to the switching, under the open condition of valve plate, the tuber pipe forms the passageway, under the closed condition of valve plate, the tuber pipe is blocked.

2. The damper of claim 1, wherein the hinge is a pivot hinge.

3. The air valve according to claim 2, wherein the number of the valve plates is two, and the two valve plates are a first valve plate and a second valve plate, respectively, and wherein the air valve comprises a split transmission mechanism for simultaneously driving the opening and closing of the two valve plates.

4. A damper according to claim 3 wherein the split gear is a worm gear split gear, a connecting rod split gear or a gear split gear;

The first driving gear is in meshed connection with the first driven gear;

5. The damper of any one of claims 1-4, including a seal assembly disposed between the valve plate and the frame for providing a full seal between the valve plate and the frame in a closed state of the valve plate.

6. The damper of claim 5, wherein the seal assembly comprises:

7. The damper of any one of claims 1-4, wherein the valve plate is provided with a thermal insulation layer or a fire protection and insulation layer.

8. The damper of any one of claims 1-4, wherein the damper comprises a fire damper, the fire damper comprising an actuator comprising a temperature sensor disposed in the air duct for sensing a temperature of the forward airflow.

9. The damper of any one of claims 1-4, wherein the damper comprises a fire damper, the fire damper comprising an actuator, the actuator comprising an electromagnetic locking assembly;

10. The damper of any one of claims 1-4, wherein the damper comprises a fire damper, the fire damper comprising an actuator, the actuator comprising an energy storage action device;