CN106679142B

CN106679142B - Frame integrated impact-resistant closed tornado valve

Info

Publication number: CN106679142B
Application number: CN201611100403.9A
Authority: CN
Inventors: 谢军
Original assignee: Wuxi Fucare Industrial Co ltd
Current assignee: Wuxi Fucare Industrial Co ltd
Priority date: 2016-12-02
Filing date: 2016-12-02
Publication date: 2022-06-14
Anticipated expiration: 2036-12-02
Also published as: CN106679142A

Abstract

The invention relates to heating and ventilation equipment for a fresh air inlet and an exhaust outlet of a building, in particular to a frame integrated impact-resistant closed tornado valve for resisting high-grade impact waves and tornados. The frame of the frame integrated type anti-impact closed tornado valve comprises a frame body, a plurality of reinforcing ribs and a bottom plate. The strengthening rib sets firmly in the framework, and the strengthening rib separates the framework for a plurality of ventilation passageways, and the centre of every ventilation passageway sets firmly the bottom plate that band-pass wind gap. The valve leaf is connected with the frame in a rotating way. One end of the tension spring is fixed with the frame, the other end of the tension spring is fixed with the valve leaf, and the tension spring gives a preset force to the valve leaf. When the ventilation valve is in a ventilation state, the ventilation opening is in a ventilation state; when the vent valve is in a closed state, the bottom surface of the valve leaf is in plane contact with the bottom plate, so that the vent is closed. The invention can meet the requirement of large-air-volume ventilation, can realize bilateral shock wave resistance when encountering high-grade shock waves or tornadoes, and has the advantages of rapid reaction, simple structure and strong sealing property.

Description

Frame integrated impact-resistant closed tornado valve

Technical Field

The invention relates to heating and ventilation equipment for a fresh air inlet and an exhaust air outlet of a building, in particular to a ventilation valve for the fresh air inlet and the exhaust air outlet of the building with potential explosion shock waves and tornado hazards, and particularly relates to a frame integrated impact-resistant closed tornado valve.

Background

The blast shock wave is largely broken in two stages: the first stage is that the explosion center emits several ten thousand shock waves of atmosphere pressure while explosion occurs, the shock waves move around in spherical form at high speed and have great impact ring breaking force on the object, and the pressure of the shock waves is attenuated fast with the increase of the moving distance of the shock waves. The second stage is that the air at the center of explosion is contracted to generate negative pressure due to the inertia effect of fluctuation, and a strong negative pressure wave is accompanied. When negative pressure wave is generated, the air pressure in the building is greater than the air pressure outside, so that a thrust force from inside to outside is generated. Negative pressure waves of a certain intensity can also cause damage to the installations in the building, especially when the ventilation valve is very close to the center of the explosion.

Tornado is a strong, small-range air vortex, often produced by strong convective motion of air in extremely unstable weather conditions, with a small attack range but with great destructive power. Because it is an air vortex, the effect on the building can be a high-strength positive pressure or a high-strength negative pressure, and if the air vortex is not blocked, the internal construction of the building can be damaged.

The blast resistant air valve used in the existing market is mostly of three types, specifically as follows:

as shown in fig. 1, in the conventional array-type parallel-motion anti-shock wave damper, 1 to 3 valve cores a2 with square, circular or other cross sections are mostly used to close and open the ventilation channels in a back-and-forth parallel motion manner. In normal venting, the spool a2 is in the neutral equilibrium position of the valve body a1, providing a venting function. When explosion impact or tornado attack occurs, the shock wave pressure applied to the valve core A2 closes the valve core to prevent the shock wave or tornado from entering the protected side of the building or ventilation system; when the shock wave or tornado is converted into negative pressure from positive pressure, the valve core moves to the other side, the ventilation channel is reduced until the negative pressure enables the valve core to close the ventilation channel. However, the air valve has small ventilation channel space and low ventilation rate, and when the air valve meets the requirement of large ventilation volume, a large number of valve block units are accumulated, so that the product cost is increased. When the valve core a2 is closed by contacting with the valve body a1, the gap of the contact surface cannot be completely eliminated in the processing process, and the air tightness is poor.

As shown in fig. 2, the large-air-volume shock wave resisting air valve mostly adopts 1 or more valve cores B1 of single-layer or double-layer rectangular thin plates which are arranged in parallel, and the opening and closing of a ventilation channel are realized by setting the opening angle to the closing angle of the valve core B1 and rotating the valve core. When normal ventilation is performed, the valve core B1 is opened to a set opening angle, and a ventilation function is provided. When an explosive shock occurs, the shock wave pressure applied to the cartridge B1 causes the cartridge to close, blocking the shock wave from entering the protected side of the building or ventilation system. However, such air valves have a large ventilation amount, but can only resist impact from one side, and cannot play a role in protecting the safety of internal facilities of a building when a destructive negative pressure exists, such as tornado. Secondly, when the valve element B1 is closed, the sealing performance is realized by the direct contact between the valve element B1 and the valve element B1, resulting in poor sealing performance. Further, when the shock wave pressure is large, the supporting force at the center of the valve body B1 is insufficient, and the valve body is easily deformed. Furthermore, the valve core B1 is not directly connected with the spring B2, but is connected with the spring B2 through the rotary actuator B3, and the clearance formed by the connection of the rotary actuator B3 forms accumulated errors in matching, so that the valve core of the type has certain shaking after being assembled.

As shown in fig. 3, the circular shock wave resistant damper mostly adopts a middle circular valve core, and closes and opens the ventilation channel in a front-back parallel movement mode. In normal venting, the spool C1 is in the rest position of the valve body C2, providing a venting function. When explosion impact or tornado attack occurs, the shock wave pressure applied to the valve core C1 closes the valve core to prevent the shock wave or tornado from entering the protected side of the building or ventilation system; when the shock wave or tornado is converted into negative pressure from positive pressure, the valve core moves to the other side, the ventilation channel is reduced until the negative pressure enables the valve core to close the ventilation channel. However, the air valve has a larger appearance, so that the ventilation volume per unit area is smaller; the installation mode is single, and the cast installation is required; the cost is higher under the same ventilation requirement; when the valve core C1 contacts and closes with the valve body C2, the contact surface gap cannot be completely eliminated in the processing process, resulting in poor air tightness.

Therefore, how to perform good protection on buildings and facilities in the buildings in two stages of positive pressure impact and negative pressure impact when encountering high-level explosion impact can meet the requirement of large air volume ventilation and realize bilateral shock wave resistance, and the sealing performance is better, so that the technical problem to be solved in the industry is urgently solved.

Disclosure of Invention

One of the purposes of the invention is to provide a frame integrated impact-resistant closed tornado valve which can well protect buildings and internal facilities of the buildings in two stages of positive pressure impact and negative pressure impact, can meet the requirement of large air volume ventilation, can realize bilateral impact wave resistance, has better sealing property, simple structure and quick response.

One of the objects of the invention is achieved by:

the frame integrated impact-resistant closed tornado valve comprises a frame and a valve blade. The frame comprises a frame body, a plurality of reinforcing ribs and a bottom plate which are formed by enclosing and fixing four cover plates. The strengthening rib sets firmly in the framework, the strengthening rib separates the framework for a plurality of ventilation passageways, and the centre of every ventilation passageway sets firmly the bottom plate that band-pass wind gap. The valve leaf is rotatably connected with the frame. One end of a tension spring is fixed with the frame, the other end of the tension spring is fixed with the valve leaf, and the tension spring gives a preset force to the valve leaf. The ventilation opening is a ventilation gateway of the ventilation channel. When the ventilation valve is in a ventilation state, the ventilation opening is in a ventilation state; when the ventilation valve is in a closed state, the bottom surface of the valve leaf is in plane contact with the bottom plate, so that the ventilation opening is closed. The other end of the tension spring can be fixed with the valve leaf through a connecting mechanism or directly fixed on the valve leaf.

In the above scheme, a sealing element is fixedly arranged on the bottom plate and is used for being matched and sealed with the valve leaf. The sealing element may be a sealing ring, a sealing gasket, or the like, but is not limited thereto. When the sealing element is a sealing ring, the sealing ring can be clamped or embedded on the vent. When the sealing member is a gasket, the gasket may be fixedly disposed on a surface of the base plate contacting the valve vane.

In the above scheme, the ventilation valve is further provided with a limiting piece, the limiting piece is fixedly arranged on the frame, and the limiting structure is used for limiting the maximum angle of the valve leaf which can rotate when the ventilation valve is in a ventilation state.

In the above solution, in the ventilation state, the valve blade and the bottom plate form an acute angle; the valve blades can be arranged on only one side of the bottom plate or can be arranged on two sides of the bottom plate. When the valve blades are arranged on the two sides of the bottom plate, the valve blades on the two sides of the bottom plate can be parallel or not parallel. When the valve blades are arranged on the two sides of the bottom plate, the valve blades on the two sides of the bottom plate rotate in the same direction, namely clockwise or anticlockwise when the ventilation channel is closed. Namely, when the valve blades are arranged on the two sides of the bottom plate, the valve blade on one side of the bottom plate is a valve blade A, and the valve blade on the other side of the bottom plate is a valve blade B. When the valve blade A encounters the positive shock wave or tornado, the valve blade A rotates clockwise, the valve blade B on the other side does not move, and the valve blade A returns to the original position after the positive shock wave or tornado decays. When the valve blade B encounters negative shock waves or tornadoes, the valve blade B rotates clockwise, the valve blade A on the other side does not move, and the valve blade B returns to the original position after the negative shock waves or the tornadoes decay. On the contrary, when encountering the positive shock wave or tornado, the valve leaf A rotates anticlockwise, the valve leaf B on the other side does not move, and the valve leaf A returns to the original position after the positive shock wave or tornado decays. When the valve blade B encounters negative shock waves or tornadoes, the valve blade B rotates anticlockwise, the valve blade A on the other side does not move, and the valve blade B recovers the original position after the negative shock waves or the tornadoes decay.

In the scheme, the side edge of the valve leaf is provided with a bend. The bends may be provided on only two or three of the side edges.

When the bending is arranged on the two side edges, the side edge bending is positioned on the two opposite side edges of the valve leaf, a hole A for the rotating mechanism to penetrate is formed in the side edge bending, the valve leaf is rotatably connected with the frame through the rotating mechanism, and the side edge bending is used for enhancing the strength of the valve leaf.

When bending and establishing on three sides, the valve leaf still includes the positive limit and bends, the positive limit bend with the side is bent and is formed the U-shaped, the positive limit is bent and is located the valve leaf does not bend relative one side on limit, be equipped with hole B on the positive limit is bent, hole B is used for the fixed of extension spring one end, the extension spring other end with the frame is fixed. Furthermore, a plurality of holes B are formed in the front edge bend, the length of the tension spring is adjusted by fixing the tension spring with different holes B, and the requirements of different closing pressures of the valve leaf are met.

In the above scheme, the front edge is bent to form an obtuse angle with the valve blade, and the obtuse angle is convenient for impurities such as rainwater and dust on the valve blade to slide out along the front edge. The front edge of the valve blade is provided with a water outlet, and the water outlet is convenient for impurities such as rainwater and dust on the valve blade to slide out along the water outlet.

The invention has the beneficial effects that:

1. the invention can ensure large air quantity, has high strength and is not easy to deform.

2. The valve leaf is sealed with the sealing element on the bottom plate, so that the valve leaf has extremely high sealing performance.

3. The invention can resist shock waves and tornadoes from both sides.

4. In the prior art, the valve leaf is connected with the spring through the shaft, the structure is complex, and the valve leaf is easy to lose efficacy after being used for a long time. The valve leaf is directly connected with the tension spring, other connecting mechanisms are avoided, the structure is simplified, and the reliability is greatly improved.

5. The valve leaf of the invention has fast closing speed, and can provide protection for buildings at the fastest speed when shock waves come.

6. The invention has integrated frame and free combination, and can meet the requirements of different sizes of customers.

Drawings

Fig. 1 is a schematic diagram of a prior art arrayed parallel motion blast damper with shock resistance.

Fig. 2 is a schematic view of a large-air-volume anti-shock blast valve in the prior art.

FIG. 3 is a schematic view of a prior art circular blast damper.

Fig. 4 is a schematic view of the valve vane structure of the present invention.

Fig. 5 is a schematic diagram of a frame structure according to an embodiment of the invention.

Fig. 6 is a schematic cross-sectional view of the valve leaf in the front of the bottom plate in an open state according to the embodiment of the invention.

Fig. 7 is a schematic cross-sectional view of fig. 6A-a.

FIG. 8 is a schematic sectional view of the valve flap at the back of the bottom plate in an open state according to an embodiment of the present invention.

FIG. 9 is a schematic view of a state of a side valve vane closing a vent after receiving a side shock wave or a tornado in accordance with an embodiment of the present invention.

Fig. 10 is a schematic cross-sectional view of fig. 9A-a.

Fig. 11 is a perspective view of the present invention.

Fig. 12 is a schematic view of the valve blade nail structure of the invention.

Fig. 13 is a schematic view of the valve leaf b of the present invention.

In the figure:

a valve body A1, a valve core A2,

b1 valve core, B2 spring, B3 rotary actuator, B4 valve body,

a C1 valve core, a C2 valve body,

1 Ventilation channel

10 frames, 11 frames, 12 cover plates, 13 bottom plates, 14 ventilation openings, 15 reinforcing ribs,

2 valve leaf, 21 bending part, 22 windward side, 23 side bending, 24 holes A, 25 positive edge bending, 26 holes B, 27 drainage port, 28 non-bending side,

2A valve leaf nail, 23A side edge bending nail, 24A hole nail A, 25A front edge bending nail, 26A hole nail B, 27A water outlet nail, 28A non-bending side nail,

a valve leaf B of 2B, a bent B at the side edge of 23B, a hole B A of 24B, a bent B at the front edge of 25B, a hole B of 26B, a water outlet B of 27B, an un-bent B at the side edge of 28B,

3A slewing mechanism, 3B slewing mechanism, 5 extension springs, 51 extension spring mechanisms, 6A limit structure A, 6B limit structure B, 41 sealed pad.

Detailed Description

The present invention will be further described with reference to the accompanying drawings for more precise description of the invention and the advantages thereof, but the scope of the invention is not limited to the description of the embodiments.

The invention will be further described with reference to figures 4 to 13,

example (b): the frame integrated impact-resistant closed tornado valve comprises a frame 10 and a valve blade 2.

As shown in fig. 4, the valve vane 2 has a plate shape, three sides of which are bent toward the windward side 22 and extend to form a U-shaped bent portion 21. The bent portion 21 includes a side edge bend 23 and a front edge bend 25. The straight edge bend 25 is located on the side facing the non-bent edge 28 of the valve leaf 2. The side folds 23 are located on both sides of the straight fold 25. The front edge bend 25 is provided with a hole B26 for fixing the tension spring 5 and a drain port 27 for draining water and ash. The side bend 23 is provided with a hole a24 for the rotating mechanism 3 to pass through.

The frame 10 includes a quadrangular frame body 11 formed by enclosing and fixing four cover plates, reinforcing ribs 15, and a bottom plate 13. The reinforcing ribs 15 are fixedly arranged in the frame body 11 to divide the frame body 11 into a plurality of ventilation channels 1, and a bottom plate 13 with an air inlet 14 is fixedly arranged in the middle of each ventilation channel 1. Both the front and back of the base plate 13 are provided with gaskets 41.

The frame 10 is further provided with a limiting member 6, the limiting member 6 is fixedly arranged on the frame 10, and the limiting structure 10 is used for limiting the maximum angle that the valve leaf 2 can rotate when the ventilation valve is in a ventilation state.

For the same vent 14, the valve leaf 2 includes a valve leaf B2B on the front side of the bottom plate 13, and a valve leaf a 2A on the back side of the bottom plate 13. The valve leaf B2B and the valve leaf A2A are arranged in parallel.

A hole B24B is arranged on a side edge bending B23B of the valve leaf B2B on the front surface of the bottom plate 13, and the rotating mechanism 3B is arranged in the hole B24B in a penetrating way and is rotationally connected with the frame body 11. The positive edge bend B25B of the valve leaf B2B is provided with a hole B26B for fixing the tension spring 5 and a water outlet B27B for draining water and ash. The straight edge bending B25B is positioned on the side opposite to the non-bending side B28B of the valve leaf B2B.

One end of the tension spring 5 is fixed with the frame body 11 through a tension spring mechanism 51, and the other end of the tension spring 5 is hooked in a hole B26B on the front edge bent B25B of the valve leaf B2B and fixed with the valve leaf B2B. The tension spring 5 gives a preset force to the valve leaf B2B. 26A hole A B

The side edge bent armor 23A of the valve leaf armor 2A on the back of the bottom plate 13 is provided with a hole armor A24A, and the rotating mechanism 3A penetrates through the hole armor A24A and is connected with the frame body 11 in a rotating mode. The front edge bent armor 25A of the valve leaf armor 2A is provided with a hole armor B26A for fixing the tension spring 5 and a water outlet B27A for draining water and ash. The forward-bent armor 25A is located on the side facing the non-bent armor 28A of the valve leaf armor 2A.

One end of the tension spring 5 is fixed to the frame 11 by the tension spring mechanism 51, and the other end of the tension spring 5 is hooked in the hole nail B26A on the front edge bent nail 25A of the valve leaf nail 2A and fixed to the valve leaf nail 2A. The tension spring 5 gives the valve leaf armor 2A a preset force.

When airtight tornado valve is in the ventilation state is resisted to frame integrated form:

under the action of the tension spring 5, the valve leaf A2A and the valve leaf B2B form acute angles with the bottom plate 13; the vent 14 is in a vent state.

When the front face of the vent valve is impacted by a shock wave or tornado,

the valve leaf B2B on one side of the bottom plate 13 rotates clockwise, and the leeward surface of the valve leaf B2B is in sealing fit with the sealing ring 41 on the bottom plate 13, so that the vent 14 is closed. The other valve leaf 2A is stationary.

When the positive pressure is declined, the valve leaf B2B closed under the action of the positive pressure rotates to be opened, the valve leaf A2A which is not actuated on the other side continues to be static and does not rotate, and the ventilation channel returns to the opening state.

When negative shock wave/tornado negative pressure acts, the valve blade A2A rotates clockwise, the leeward surface of the valve blade A2A is in sealed fit with the sealing ring 41 on the bottom plate 13, and the vent 14 is closed. The other side valve leaf B2B is fixed.

When the negative pressure is declined, the valve leaf A2A closed under the action of the negative pressure rotates to be opened, the valve leaf B2B which is not operated at the other side continues to stand still and does not rotate, and the ventilation channel returns to the opening state.

When the valve blades (2A and 2B) are matched with the front and back sides of the bottom plate 13 to close the ventilation channel, the leeward sides of the valve blades (2A and 2B) are in plane contact with the bottom plate 13, and sealing is achieved through the sealing gasket 41 on the bottom plate 13.

Comparative example: compared with the three air valves in the prior art, the invention has the following advantages:

the invention has the advantages of larger ventilation and double-side resistance to shock waves or tornadoes. When the shock wave or tornado attacks, the closing speed of the invention is faster, the shock wave resistance grade is stronger, and the sealing performance is optimal.

Claims

1. The frame integrated impact-resistant closed tornado valve comprises a frame and valve blades, wherein the frame comprises a frame body and reinforcing ribs, the frame body is formed by enclosing and fixing four cover plates, the reinforcing ribs are fixedly arranged in the frame body, the frame body is divided into a plurality of ventilation channels by the reinforcing ribs, the frame integrated impact-resistant closed tornado valve is characterized in that,

a bottom plate with an air outlet is fixedly arranged in the middle of each ventilation channel;

the valve blade is rotationally connected with the frame;

one end of a tension spring is fixed with the frame, the other end of the tension spring is fixed with the valve leaf, and the tension spring gives a preset force to the valve leaf;

when the ventilation valve is in a ventilation state, the ventilation opening is in a ventilation state; the valve leaf and the bottom plate form an acute angle; the valve blades are arranged on two sides of the bottom plate;

when the ventilation valve is in a closed state, the rotation directions of the valve blades on the two sides of the bottom plate are the same, and are both clockwise or both counterclockwise, and the bottom surfaces of the valve blades are in plane contact with the bottom plate, so that the ventilation opening is closed.

2. The frame-integrated impact-resistant closed tornado valve as claimed in claim 1, wherein the other end of the tension spring is directly fixed on the valve leaf.

3. The frame-integrated impact-resistant airtight tornado valve as claimed in claim 1, wherein a sealing member is fixedly arranged on said bottom plate, and said sealing member is used for being matched and sealed with said valve leaf.

4. The frame-integrated impact-resistant closed tornado valve as claimed in claim 2, wherein a sealing element is fixedly arranged on the bottom plate and is used for being matched and sealed with the valve leaf.

5. The frame-integrated impact-resistant airtight tornado valve as claimed in any one of claims 1 to 4, wherein the side edges of said valve leaf are provided with bends.

6. The frame-integrated impact-resistant airtight tornado valve as claimed in claim 5, wherein the side bends are located on two opposite sides of the valve leaf, the side bends are provided with holes A for the rotation mechanism to penetrate through, the valve leaf is rotatably connected with the frame through the rotation mechanism, and the side bends are used for enhancing the strength of the valve leaf.

7. The frame-integrated impact-resistant closed tornado valve as claimed in claim 6, wherein the valve leaf further comprises a front edge bend, the front edge bend and the side edge bend form a U shape, the front edge bend is located on the opposite side of the non-bent edge of the valve leaf, the front edge bend is provided with a hole B, the hole B is used for fixing one end of a tension spring, and the other end of the tension spring is fixed with the frame.

8. The frame-integrated impact-resistant airtight tornado valve as claimed in claim 7, wherein the ventilation valve further comprises a limiting member fixed to the frame, and a limiting structure is used to limit a maximum angle at which the valve leaf can rotate when the ventilation valve is in a ventilation state.

9. The frame-integrated impact-resistant closed tornado valve as claimed in claim 7, wherein the front edge of the bend is provided with a water outlet, and the water outlet is convenient for impurities such as rainwater and dust on the valve blade to slide out along the water outlet.