CN220688055U - Flat-open type regulating valve - Google Patents

Abstract

The utility model discloses a flat-open configuration regulating valve, which regulates the air quantity by regulating the size of a ventilation area of an air pipe; comprising the following steps: the frame is arranged in the air pipe and is of an integrated structure; and the valve plate is arranged in a flat-open mode, the valve plate comprises a front valve plate positioned on a windward side and a rear valve plate positioned on a leeward side, the first side of the front valve plate is vertically arranged on a vertical side frame of the frame in a first hinging mode, the front valve plate can rotate around the vertical side frame and drive the rear valve plate to move so as to be opened and closed, the third side of the rear valve plate is connected with the second side of the front valve plate opposite to the first side in a second hinging mode, and the fourth side of the rear valve plate abuts against the side wall of the air pipe to move. The adjusting valve provided by the utility model can adjust the wind-passing area of the air pipe through the triangular prismatic surface structure, so that turbulent flow is avoided, better adjusting performance is realized, meanwhile, the local resistance of the adjusting valve is reduced, vibration and noise are reduced, the resistance is small, the sealing is tight, and the cleaning operation of the air pipe is convenient to implement.

Description

Flat-open type regulating valve

Technical Field

The utility model relates to the fields of ventilation, air conditioning and smoke prevention and exhaust, in particular to a novel flat-open configuration regulating valve.

Background

The regulating valve is an air valve which has an air quantity regulating function on air flow in the fields of ventilation, air conditioning, smoke prevention, smoke exhaust and the like, and can be divided into a rectangle and a circle according to the appearance. Wherein the rectangular regulating valve of traditional structural style is that the pivot is all arranged in the tuber pipe level, and the valve plate is parallel to ground and rotates with mutual parallel or opposite mode, and valve plate and pivot all expose in the centre of tuber pipe air current, have following shortcoming and problem:

1. the resistance is too great.

1. The valve plate and the rotating shaft of the regulating valve are all exposed in the air flow of the air pipe, and the regulating valve deflects a certain angle through the valve plate to regulate the air quantity, so that the larger the included angle between the valve plate and the air flow is, the larger the vortex intensity formed by the air flow is, and the larger the local resistance is.

2. Under the conditions of higher wind speed and larger airflow fluctuation, the valve plate is easily affected by vortex to shake, vibration and noise are generated, and the valve plate and the rotating shaft are easily deformed to influence the closing or opening of the valve. And under the condition of longer running time, the valve plate and the rotating shaft are easy to break and fall off caused by fatigue.

2. The sealing is not tight.

1. The valve plate of the regulating valve is in plane lap joint seal with the valve plate and the air pipe, and the regulating valve is not tightly closed in a fully closed state due to the fact that the valve plate and the side wall of the air pipe are not provided with sealing structures, uneven contact surfaces, greasy dirt sundries and other factors.

2. Part of the regulating 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 more construction gaps between the valve plate and the air pipe of the regulating valve lead to poor tightness. 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.

3. Affecting the cleaning of the air duct. The valve plate and the rotating shaft of the regulating 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 regulating valve is, the larger the resistance of the system is, the higher the pressure head required by the fan is, and the higher the power requirement of the corresponding motor is, so that the energy consumption of the fan is increased, and the energy conservation and emission reduction of the fan are not facilitated. And the increased pressure head of the fan can cause the noise and vibration of the fan to be increased.

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 governing valve in the tuber pipe all influences the cleaning operation of tuber pipe, needs more cleaning ports or dismouting tuber pipe to wash.

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

Disclosure of Invention

The utility model aims to provide a novel flat-open configuration regulating valve, which forms a triangular prismatic surface structure on the side wall of an air pipe through hinged front and rear valve plates to regulate the windward area of the air pipe, wherein the valve plate on the windward side compresses forward air flow, and the valve plate on the leeward side fills a negative pressure area after the compressed air flow to avoid forming turbulence, thereby realizing better regulating performance, simultaneously reducing local resistance of the regulating valve, vibration and noise, and having small resistance and tight sealing, and being convenient for implementing cleaning operation of the air pipe.

The utility model provides a flat-open configuration regulating valve, which regulates the air quantity by regulating the size of a ventilated area of an air pipe; the regulating valve includes: 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 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 and 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 the open state of the valve plate, the air duct forms a passage, and in the closed state of the valve plate, the air duct is blocked.

In another preferred embodiment, the second hinge is a hinge connection.

In another preferred embodiment, the second hinge means is a spring hinge connection.

In another preferred embodiment, the frame is provided by the ductwork, i.e. the frame is integrated with the ductwork.

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 regulating valves.

In another preferred embodiment, the number of the valve plates is two, and the split rotation of the two valve plates is controlled by the split transmission mechanism, and the two valve plates are a first valve plate and a second valve plate.

In another preferred embodiment, the split transmission mechanism is a worm and gear split transmission mechanism and comprises a first worm wheel, a second worm wheel, a first worm connected with the first worm wheel in a matched manner, a second worm connected with the second worm wheel in a matched manner and a transmission shaft used for connecting the first worm and the second worm, wherein the first worm, the transmission shaft and the second worm form a transmission assembly.

In another preferred embodiment, the first hinge manner is a rotation shaft connection, wherein the front valve plate is fixedly connected with the rotation shaft, a support seat matched with the rotation shaft is arranged on the frame, the rotation shaft is rotatable in the support seat, and the valve plate is further horizontally opened and closed relative to the frame in a manner of being perpendicular to the ground.

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 worm wheel is fixedly connected with a first rotating shaft connected with the first valve plate in a concentric manner, and the second worm wheel is fixedly connected with a second rotating shaft connected with the second valve plate in a concentric manner.

In another preferred example, the first hinge is a spring hinge and is rotationally connected, and the regulating valve comprises a regulating component, wherein the regulating component comprises a pressing wheel, a control rod and a control rotating shaft, the regulating component is arranged on the back surface of the front valve plate and is propped against the front valve plate to provide a propping force through the pressing wheel, the pressing wheel is positioned at one end of the control rod, the other end of the control rod is fixed on the control rotating shaft, and the control rotating shaft drives the control rod to rotate and further controls the maximum opening of the valve plate through the pressing wheel.

In another preferred embodiment, a spring hinge provides a moment to close the valve plate and allows the valve plate to disengage the pinch roller from the pinch limit and close when positive air flow ceases.

In another preferred embodiment, a control bearing is provided on the frame, which cooperates with a control shaft, which is rotatable in the control bearing, thereby rotating the adjustment assembly relative to the frame.

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

In another preferred embodiment, the control mount comprises an upper control mount and a lower control mount.

In another preferred embodiment, the two control levers are respectively fixed at two ends of the control shaft, and form a "U" structure together.

In another preferred embodiment, when the number of the control rods is greater than 1, the control rods are centrally (at the height center of the air duct) symmetrically distributed on the control rotating shaft.

In another preferred example, the number of the control rotating shafts is two, the two control rotating shafts are a first control rotating shaft and a second control rotating shaft, the first worm wheel is fixedly connected with the first control rotating shaft in a concentric manner, and the second worm wheel is fixedly connected with the second control rotating shaft in a concentric manner.

In another preferred embodiment, the adjusting valve includes a damping device, where the damping device is used to provide a force required to suppress vibration of the valve plate due to the influence of airflow, and the damping device is sleeved on the rotating shaft or the spring hinge of the first hinge manner.

In another preferred embodiment, the damping means includes, but is not limited to, providing damping force by elastic members, hydraulic means, friction means.

In another preferred embodiment, the transmission assembly is rotatable by a drive handle which can be manually turned by an operator to drive the first valve plate and the second valve plate in a simultaneous split.

In another preferred embodiment, the transmission assembly is rotatable by a motor drive to drive the first valve plate and the second valve plate to be simultaneously bisected.

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 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 regulator valve 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 state 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 two valve plates are respectively fixed on the vertical frames at two sides and are relatively flat-open.

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, a reinforcing plate is provided on the valve plate.

In another preferred embodiment, the position of the reinforcing plate of the front valve plate corresponds to the position of the pinch roller. The reinforcing plate of the front valve plate further disperses the pressure of the pinch roller on the front valve plate.

The beneficial effects of the utility model are as follows:

on one hand, the hinged valve plate forms a triangular prismatic surface structure on the side wall of the air pipe to adjust the windward area of the air pipe, wherein the valve plate on the windward side compresses positive air flow, and the valve plate on the leeward side fills a negative pressure area after the air flow is compressed, so that turbulent flow is avoided, thereby realizing better adjusting performance, reducing the local resistance of the adjusting valve and reducing vibration and noise; on the other hand, the hinged valve plate and the rotating shaft lean against 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.

The worm and the worm wheel of the split transmission mechanism are self-locked, namely, only the worm drives the worm wheel to rotate, but the worm wheel cannot drive the worm wheel to rotate, so that when the valve plate is in the middle state, the impact of air flow on the valve plate is borne by the respective worm, the structure of the execution mechanism can be simplified, the burden of the execution mechanism is lightened, and the service life of the execution mechanism is prolonged.

The hinged 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 traditional configuration regulating valve into two larger parts, thereby avoiding the influence on the cleaning operation of the air pipe.

The total resistance of the air pipe system can be reduced by reducing the local resistance of the regulating valve, the power of the 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.

The periphery of the front valve plate and the integral frame are sealed by a sealing gasket, and the regulating valve has better sealing performance in a fully closed state.

It is understood that within the scope of the present utility model, the above-described technical features of the present utility model 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 utility model 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 utility model, 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 regulator valve in one example of the utility model;

FIG. 2 is a front view of the regulator valve of FIG. 1 in a flat open configuration;

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 P of fig. 4;

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

fig. 8 is an enlarged view of the portion M of fig. 3;

fig. 9 is a perspective view of a check and regulation valve of a side-by-side configuration in one example of the utility model.

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;

12-ball universal wheels;

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;

31-a front valve plate;

32-a rear valve plate;

33-guide wheels;

34-hinges;

39-a transmission support;

40-pressing wheel;

41-a control lever;

42-controlling the rotating shaft;

43-control mount;

44-spring hinge.

Detailed Description

The utility model discloses a flat-open type regulating valve, which aims at the defects of the conventional type regulating valve and the problems of the regulating valve in production, installation and use links, and firstly develops a triangular prismatic surface structure formed on the side wall of an air pipe by hinged front and rear valve plates to regulate the windward area of the air pipe, wherein a valve plate on the windward side compresses forward air flow, a valve plate on the leeward side fills a negative pressure area after compressed air flow, turbulence is avoided, and therefore, the flat-open type regulating valve has the advantages of better regulating performance, reduced local resistance of the regulating valve, reduced vibration and noise, small resistance, tight sealing and convenience in implementing cleaning operation of the air pipe.

Terminology

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

The utility model provides a novel flat-open configuration regulating valve which comprises two hinged valve plates, a limiting device, an integrated frame, a split transmission mechanism and an actuating mechanism.

Wherein two sections of articulated valve plates of flat-open installation include: the front valve plate and the rear valve plate are hinged together by a spring hinge, the front valve plate is used as a windward side, the front end of the front valve plate is fixed on a rotating shaft by a bolt, and the tail end of the rear valve plate is provided with a guide wheel, so that the guide wheel of the rear valve plate is clung to the side wall of the air pipe due to the moment of the spring hinge; the reinforcing plate is arranged at the position where the valve plate is stressed greatly so as to control the thickness and the weight of the valve plate.

The limiting device is a spring hinge, and the torque of the spring hinge enables the rear end of the rear valve plate to slide on the side wall of the air pipe through the guide wheel.

The integrated frame comprises a left frame, a right frame, an upper frame, a lower frame and a middle frame; all the frames are welded into a whole, and the U-shaped groove is fixed on the integrated frame through riveting; the upper support and the lower support of the rotating shaft are arranged on the left and right frames and the upper frame of the integrated frame through bolts; the integrated frame is embedded in the air pipe and is fixed on the air pipe flange through bolts.

The split transmission mechanism comprises a worm, a worm wheel, a transmission rod and a transmission support. The transmission support is a rectangular hollow structure, and the bottom surface of the transmission support is fixed on the air pipe. The worm wheel is arranged at the top of the rotating shaft penetrating through the air pipe and meshed with the worm, and the worm is connected with the transmission rod and is fixed on the side face of the transmission support. When the two side worms rotate in opposite directions, the actuating mechanism drives the rotating shafts to rotate, one rotating shaft rotates clockwise, and the other rotating shaft rotates anticlockwise, so that the valve plates at the two sides rotate relatively in parallel at the same angle.

The actuating mechanism comprises an exposed handle, a valve plate position indicator, an internal self-locking limit, a motor, a gear set, a wiring terminal and the like.

In another preferred example, for a regulating valve which does not need to fully close the sealing function and only needs to simply regulate the function, a middle frame with certain resistance and interference on air flow can be omitted.

In another preferred example, for the regulating valve which does not need to fully close the sealing function and only needs to simply regulate the function, the joint of the front valve plate and the rear valve plate can be arc-shaped.

The working process of the utility model is as follows:

through actuating mechanism's handle or motor and gear train, the pivot of bisecting drive mechanism drive both sides drives the front valve plate of windward side and bisects the form rotation with the same angle, the front valve plate passes through the spring hinge and drives the motion of back valve plate, the leading wheel of back valve plate rear end is hugged closely tuber pipe lateral wall and is slided the motion by the moment of torsion of torsional spring in the spring hinge, the front and back valve plate forms triangle-shaped prismatic face at tuber pipe lateral wall like this, this triangle-shaped prismatic face width (middle articulated shaft is apart from the distance of tuber pipe lateral wall) can change, the tuber pipe can cross wind width and cross wind area and change thereupon, just so can adjust the amount of wind in the tuber pipe: the smaller the opening angle of the current valve plate is, the smaller the width of the prism protruding air pipe is, the larger the area of the air pipe which can pass air is, the larger the air quantity is, and the smaller the wind resistance is.

The self-locking between the worm and the worm wheel can only drive the worm wheel to rotate, but not drive the worm wheel to rotate, so that when the valve plate is in the middle state, the impact of air flow is borne by the respective worm, thereby simplifying the structure of the actuating mechanism, reducing the burden of the actuating mechanism and prolonging the service life of the actuating mechanism.

The hinged valve plate is in a right triangle in a fully closed state, and the four Zhou Jinya of the front valve plate is arranged on the sealing gasket under the action of the actuating mechanism, the spring hinge and the spring. The hinged valve plate is in a straight line shape which is clung to the side wall of the air pipe in the fully open state.

When the rear valve plate moves, the spherical universal wheels below the rear valve plate roll and slide at the bottom of the air pipe, so that the valve plate is prevented from falling down and the bottom of the air pipe is prevented from being rubbed and bumped to influence the action of the valve plate.

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

As shown in fig. 1-8, the regulating valve of the present embodiment includes a frame 2, a flat-open mounted valve plate 4, a sealing assembly, a worm gear split transmission mechanism, and an actuator.

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.

Each valve plate 4 comprises a front valve plate 31 positioned on the windward side and a rear valve plate 32 positioned on the leeward side, wherein a first side of the front valve plate 31 is vertically arranged on a vertical left/right frame of the frame 2 in a first hinging manner, can rotate around the vertical frame and drive the rear valve plate 32 to move so as to open and close, a third side of the rear valve plate 32 is connected with a second side of the front valve plate 31 opposite to the first side in a second hinging manner, and a fourth side of the rear valve plate 32 abuts against the side wall of the air pipe 1.

The valve plate limiting device is a spring hinge, and the torque of the spring hinge limits the fourth side of the rear valve plate 32 to move against the side wall of the air pipe 1. In this embodiment, the first hinge manner may be a rotation shaft hinge manner. The second hinge is hinged by a hinge 34.

The limiting device further comprises 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 handle 20 drives the worm and gear split transmission mechanism and thus the valve plate 4 to rotate. The worm gear and worm split transmission mechanism comprises a first worm gear 15, a second worm gear 16, a first worm 17, a second worm 18 and a transmission shaft 19, wherein the first worm 17 is in matched connection with the first worm gear 15, the second worm 18 is in matched connection with the second worm gear 16, the transmission shaft 19 is used for connecting the first worm 17 and the second worm 18, the first worm 17, the transmission shaft 19 and the second worm 18 form a transmission assembly, the first worm gear 15 is fixedly connected with a first rotating shaft 5 connected with a first valve plate 4a in a concentric mode, and the second worm gear 16 is fixedly connected with a second rotating shaft 5 connected with a second valve plate 4b in a concentric mode.

The transmission support 39 is a rectangular hollow structure, and the bottom surface of the transmission support is fixed on the air pipe 1. The worm and the drive rod are both fixed to the sides of the drive support 39. When the two side worms rotate in opposite directions, the actuating mechanism 21 drives the rotating shafts 5 to rotate, wherein one rotating shaft 5 rotates clockwise, and the other rotating shaft 5 rotates anticlockwise, so that the valve plates 4 on the two sides rotate relatively in parallel at the same angle.

A sealing assembly is provided 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 U-shaped groove 9 provided on the outer periphery of the frame 2 and a gasket 14, the outer periphery of the valve plate 4 abutting the gasket 14 in the closed state of the valve plate 4 to form a seal.

The regulating valve comprises a damping device, namely a spring 8, which is sleeved on the rotating shaft 5 in the first hinging mode.

A spherical universal wheel 12 is arranged at the bottom of the valve plate 4, and the valve plate 4 moves on the bottom plate of the air pipe 1 through the spherical universal wheel 12. The ball castor 12 is provided with spring (not shown) compensation to accommodate slight deformation of the floor of the air duct 1.

The valve plate 4 is provided with a reinforcing plate 10, and the valve plate 4 is connected to the shaft lug of the rotating shaft 5 through the reinforcing plate 10 so as to disperse the acting force born by the valve plate, reduce the thickness of the valve plate 4 as much as possible and control the weight of the valve plate to reduce the falling.

Example 2

As shown in fig. 9, this embodiment is similar to embodiment 1, except that the present embodiment has a return regulating valve, which integrates both functions of regulation and check. To facilitate the demonstration of the structural differences, the actuator in embodiment 1 is not shown in fig. 9.

The first hinge manner of the valve plate 4 in this embodiment is that the spring hinge 44 is rotatably connected, and the spring hinge 44 and the spring hinge 34 of the second hinge manner enable the valve plate 4 to be automatically in a closed state when no external force of positive airflow acts.

The check adjusting valve of the present embodiment further includes an adjusting component, wherein the adjusting component includes a pressing wheel 40, a control rod 41 and a control rotating shaft 42, the adjusting component is disposed on the back surface of the front valve plate 31, the pressing wheel 40 is abutted against the front valve plate 31 to provide an abutting force, the pressing wheel 40 is located at one end of the control rod 41, the other end of the control rod 41 is fixed on the control rotating shaft 42, the control rotating shaft 42 drives the control rod 41 to rotate, and the maximum opening of the valve plate 4 is further controlled by the pressing wheel 40. The two control levers 41 are respectively fixed at two ends of the control shaft 42, and form a "U" structure together. The number of the control rotating shafts 42 is two, the two control rotating shafts 42 are a first control rotating shaft and a second control rotating shaft, the first worm wheel 15 is fixedly connected with the first control rotating shaft in a concentric manner, and the second worm wheel 16 is fixedly connected with the second control rotating shaft in a concentric manner. The actuator 21 adjusts the opening angle of the valve plate 4 by controlling the rotation shaft 42.

The frame 2 is provided with a control seat 43 cooperating with the control shaft 42, the control shaft 42 being rotatable in the control seat 43, thereby rotating the adjustment assembly relative to the frame 2. The control support 43 of the control shaft 42 is mounted on the vertical rim of the frame 4 by means of bolts, rivets or the like.

When there is a positive air flow in the air duct 1, the valve plate 4 is pushed by the positive air flow to be opened, and the maximum opening is determined by the angle of the control lever 41, so that the adjusting function can be realized by adjusting the angle of the control lever 41. When the forward airflow disappears, on one hand, the spring hinge 34 and the spring hinge 44 enable the valve plate 4 to be separated from the abutting limitation of the pinch roller 40 and closed, and on the other hand, the reverse airflow in the pipeline can also push the valve plate 4 to be closed, so that the non-return function is achieved.

All documents mentioned in this application are incorporated by reference 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 claims appended hereto.

Claims (10)

1. The regulating valve is characterized in that the regulating valve regulates the air quantity by regulating the size of the ventilated area of the air pipe; the regulating valve includes:

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; and

the air duct comprises a flat-open type mounting valve plate, wherein 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 mounted on a vertical frame of the frame in a first hinging manner and 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 duct to move;

in the open state of the valve plate, the air duct forms a passage, and in the closed state of the valve plate, the air duct is blocked.

2. The regulator valve according to claim 1, wherein the number of said valve plates is two, and said two valve plates are a first valve plate and a second valve plate by controlling the split rotation of said two valve plates by a split transmission mechanism.

3. The regulating valve according to claim 2, wherein the split transmission mechanism is a worm gear and worm split transmission mechanism, and comprises a first worm gear, a second worm gear, a first worm cooperatively connected with the first worm gear, a second worm cooperatively connected with the second worm gear, 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.

4. A regulating valve according to claim 3, wherein the first hinge means is a rotary shaft connection, wherein the front valve plate is fixedly connected to the rotary shaft, a support seat is provided on the frame and is matched with the rotary shaft, and the rotary shaft is rotatable in the support seat, so that the valve plate is horizontally opened and closed relative to the frame in a manner of being perpendicular to the ground.

5. The regulator valve of claim 4, wherein the first worm gear is fixedly coupled concentric with a first shaft coupled to the first valve plate, and the second worm gear is fixedly coupled concentric with a second shaft coupled to the second valve plate.

6. A regulating valve according to claim 3, wherein the first hinge means is a spring hinge and the regulating valve comprises a regulating component, wherein the regulating component comprises a pressing wheel, a control rod and a control rotating shaft, the regulating component is arranged on the back surface of the front valve plate, the pressing wheel is abutted against the front valve plate to provide an abutting force, the pressing wheel is positioned at one end of the control rod, the other end of the control rod is fixed on the control rotating shaft, the control rotating shaft drives the control rod to rotate, and the maximum opening degree of the valve plate is controlled by the pressing wheel.

7. A regulating valve according to any one of claims 1-6, wherein the bottom of the valve plate is provided with roller means by means of which the valve plate is moved over the floor of the air duct.

8. The regulator valve according to any one of claims 1-6, wherein movement of the fourth side of the back valve plate against the side wall of the air duct is limited by a limiting device, wherein the limiting device is, but is not limited to, an elastic member or a guide wheel assembly.

9. The regulator valve according to any one of claims 1-6, comprising 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.

10. The regulator valve of claim 9, wherein 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.