WO2007079658A1

WO2007079658A1 - A valve

Info

Publication number: WO2007079658A1
Application number: PCT/CN2006/003705
Authority: WO
Inventors: Yan Fai Yuen
Original assignee: Yan Fai Yuen
Priority date: 2006-01-06
Filing date: 2006-12-30
Publication date: 2007-07-19
Also published as: CN101029693A; HK1093850A2; CN100455859C; TW200726879A

Abstract

A valve includes a housing which can connect with other pipelines; a resistance portion which is provided in the housing; a seal baffle which is pivotly provided in said housing and cooperates with said resistance portion to close and open the valve; an automatic weight distribution unit which is provided on the top of the seal baffle and crosses the front side and the rear side of the seal baffle. The counterweight in the automatic weight distribution unit can move in the automatic weight distribution unit accoring to the swing of the seal baffle to effect the opening and the closing between the seal baffle and the resistance portion.The counterweight can swing along with the seal baffle, therefore the valve can move back and forth. So the adverse effects caused by the sudden shock when the valve is opened can be reduced, and the weight of the seal baffle can be reduced. The valve has the function of delaying the close of the valve, whereas the drainage of low discharge liquid can be carry out easily.

Description

Technical field

The invention relates to a valve which can effectively prevent backflow of sewage, odor and the like. Background technique

With the development of society and the enhancement of environmental awareness, valves for preventing waste valves, waste water and exhaust gas from flowing back at the outlets or entrances of various sewer pipes, wastes or waste gas are also available. Preventing insects such as snakes, worms, rats, ants, cockroaches, etc. from entering the door, such as the anti-backflow device disclosed in Chinese Patent No. 0 327 063, although it is possible to prevent backflow and prevent harmful insects from entering the room, but still exists during use. There are deficiencies, that is, the cost is increased due to the use of the body, and sudden changes in the flow rate in the pipe are likely to cause a sudden impact, which easily damages the valve. There are also a plurality of one-way valves which are relatively simple in structure, such as the Japanese Patent Publication No. 2000-130617, and the Japanese Patent No. 3,783,893, which disclose the closing and opening of the valve by the weight of the valve baffle and the fluid force. One-way valve; Chinese patent ZL95236053. 5. The one-way valve disclosed in the European Patent Publication No. 0234445 utilizes the counterweight connected by the valve baffle and the fluid impulse to realize the valve closing and opening action. These structures do not prevent the adverse effects of sudden flow shocks on the valve, and there is no delay time when the valve is closed, which is not conducive to smooth discharge of small flow water.

For this reason, the creators of the present invention, with their years of experience and practice in related industries, and through painstaking research and development, have finally created a valve that can reduce the occurrence of sudden shocks and prevent backflow. Summary of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to provide a valve that mitigates the adverse effects of sudden flow surges on the valve and that does not prevent small flow of water from draining smoothly when the valve is closed. The valve includes an outer casing that can be connected to other pipes. The outer casing is provided with a resisting portion. The sealing baffle pivoted on the outer casing cooperates with the abutting portion to close or open the valve, and a horizontal cross is fixed on the top of the sealing baffle. An automatic weight distribution device on the front and rear sides of the sealing baffle, the weight in the automatic weight distribution device moves in the automatic weight distribution device as the sealing baffle swings, affecting the opening and closing between the sealing baffle and the resisting portion.

The valve of the present invention moves back and forth in the automatic weight distribution device across the front and rear sides of the sealing baffle by the weight of the sealing baffle by the weight of the sealing baffle, thereby reducing the adverse effect of the sudden impact on the valve when the valve is opened. At the same time, the weight of the sealing baffle is reduced, and the valve has a delayed closing function, which does not hinder the smooth discharge of small flow water. DRAWINGS

1 is a schematic structural view of a valve in a first embodiment of the present invention when it is slightly opened or closed;

Figure 2 is a schematic view showing the structure of the valve shown in Figure 1 in an open state;

Figure 3 is a schematic view showing the structure of the valve in the second embodiment of the present invention when it is slightly opened or closed;

Figure 4 is a schematic view showing the structure of the valve shown in Figure 3 in an open state;

Figure 5 is a schematic view showing the structure of the valve in the third embodiment of the present invention when it is slightly opened or closed;

Figure 6 is a schematic view showing the structure of the valve in the fourth embodiment of the present invention when it is slightly opened or closed;

Figure 7 is a schematic view showing the structure of the valve in the fifth embodiment of the present invention when it is slightly opened or closed;

Figure 8 is a schematic view showing the structure of a valve in the sixth embodiment of the present invention. detailed description

Specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

The valve of the present invention can be used at the inlet or outlet of various pipes including a drain pipe, a range hood, and a ventilation duct of a large air conditioner. Can the valve be used to improve the flow resistance of fluids and gases, and is effective? Good flow, at the same time, can prevent harmful substances such as sewage and exhaust gas from flowing back into the pipeline, in the present invention The valve does not require any external energy source when in use.

As shown in FIG. 1 and FIG. 2, the valve in this embodiment includes an outer casing 3 connectable to other pipes. The outer casing 3 is provided with a resisting portion 2, and a sealing baffle disposed on the outer casing 3 1 cooperates with the resisting portion 2 to close or open the valve, and an automatic weight distribution device across the front and rear sides of the sealing baffle 1 is fixedly disposed on the top of the sealing baffle 1, and the automatic weight distribution device may be horizontally disposed or Set at an oblique angle as shown in the figure. The weight in the automatic weight distribution device moves in the automatic weight distribution device as the sealing flap 1 swings, affecting the opening and closing between the sealing flap 1 and the resisting portion 2. The sealing flap 1 is provided with a sealing sheet 10 engageable with the resisting portion 1 on the side close to the resisting portion 1. The automatic weight distribution device is fixed at the top of the sealing flap 1 at an oblique angle. The outer casing 3 is provided on the rear side of the sealing baffle 1 with an exhaust port 11 for reducing the pressure in the duct, and of course, the exhaust port 11 may be provided on the front and rear sides of the sealing baffle 1. Wherein: the cross-sectional shape of the outer casing 3 may be circular, square, elliptical or the like, and is not limited, and only needs to be the same as the pipe cross section at the place where it is used and can be sealingly connected with various pipes.

The resisting portion 2 may be integrally formed with the outer casing 1, or may be provided inside the outer casing 1 by welding or the like.

The sealing baffle 1 is pivotally disposed on the wall of the outer casing 3 and is sealed at the pivoted position. Since this sealing technique is prior art, it is easily realized by those skilled in the art, and therefore is not specifically The technology is described in detail. One end of the sealing baffle 1 extends out of the outer casing 3, and the automatic weight distribution device fixedly attached to the top of the outer casing 3 includes a container 4 which is disposed at an oblique angle to the baffle 1 at an acute angle of the baffle opening direction. , a counterweight is placed inside the container '4.

Various embodiments of the invention are described separately below.

Embodiment 1

As shown in FIG. 1 and FIG. 2, the automatic weight distribution device in the embodiment includes a container ⁴ and a weight, the weight is a ball 5 in the container, and the number thereof is at least one, and the shape of the ball may be a circle. The shape can also be other shapes such as a cylinder. The balls 5 can roll back and forth in the sealed container ⁴ across the front and rear sides of the sealing baffle 1, the specific working process is: when the valve is stationary, the balls 5 are located on the rear side of the sealed container ⁴ , due to the The valve increases the heavy torque of the ball, which makes the valve close tighter, and can reduce the adverse effect of the sudden impact on the valve when the valve is opened; when flushing, the valve opens, with the swing of the sealing baffle 1 The ball 5 moves to the front side of the sealed container 4; after the flushing is completed, the ball 5 moves to the rear side as the sealing baffle 1 swings, so that the valve has a delayed closing function, and does not hinder the smooth discharge of the small flow water. Until the valve returns to a standstill.

Embodiment 2

As shown in Figs. 3 and 4, the automatic weight distribution device in this embodiment includes a container 4, a weight in the container 4, and a viscous liquid 7. When the valve is at rest, the ball 5 and most of the viscous liquid 7 are located on the rear side of the sealed container 4; when flushing, the valve is opened, and as the sealing baffle 1 swings, the ball 5 moves to the front side of the container 4 while Most of the viscous liquid 7 also flows to the front side of the container 4; when the flushing is completed, the ball 5 starts to fall back to the rear side of the sealed container 4 as the sealing baffle 1 swings, since the viscous liquid 7 has a certain Viscous, the ball 5 is slower to fall back, so that the valve closing speed can be further controlled, so that the valve has a longer delay time when it is closed, so that a small flow of liquid or gas is discharged. The abutting portion 2 in this embodiment can be tilted to make it easier to utilize the characteristics of the viscous liquid. Other structures of this embodiment are the same as those of the first embodiment.

Embodiment 3

As shown in FIG. 5, the automatic weight distribution device in this embodiment includes a container 4 in which a partition plate 8 and a viscous liquid 7 are fixed, and a gap is formed between the upper and lower sides of the partition plate 8 and the upper and lower inner faces of the container, respectively. And the upper gap is larger than the lower gap. When the valve is at rest, most of the viscous liquid 7 is located on the rear side of the container 4; when flushing, the valve is opened, and as the sealing baffle 1 swings, the viscous liquid 7 in the sealed container is sealed from the gap above the partition plate 8. Rapid flow to the front side, and when the water is flushed, the viscous liquid 7 slowly flows back to the rear side through the gap below the partition plate 8 as the sealing baffle 1 swings, so that the valve can be slowly closed while simultaneously When the valve is opened, due to the characteristics of the viscous liquid, the valve can be given a buffering force to prevent sudden shock of the valve. Other structures of this embodiment are the same as those of the first embodiment.

Embodiment 4

As shown in FIG. 6, the automatic weight distribution device in this embodiment includes a container 4 having a partition plate therein. 8 and the viscous liquid 7, the partition plate 8 is rotatably disposed in the container 4, and the partition plate 8 is provided with a through hole 9. The partition plate 8 can only swing in one direction, and one or more through holes 9 can be formed in the partition plate 8. When the valve is stationary, most of the viscous liquid 7 is located on the rear side of the container 4; when flushing, the gate is opened, and as the sealing baffle 1 swings, the viscous liquid 7 in the container 4 is separated by means of the partition plate 8. Swinging and flowing quickly to the front side; and when the water is flushed, the viscous liquid 7 slowly flows back to the rear side through the through hole 9 in the partition plate 8 as the sealing baffle 1 swings, thereby making the valve slow At the same time, when the valve is opened, due to the characteristics of the viscous liquid, the valve can be given a buffering force to prevent sudden shock of the valve, and the valve can be closed for a small flow of liquid or gas to be discharged. Other structures of this embodiment are the same as those of the first embodiment.

Embodiment 5

As shown in FIG. 7, in the embodiment, the bottom of the container 4 is provided with a reduction tooth 14 which can delay the falling time of the ball 5. The reduction tooth 12 can be a row or more, and the shape can be a zigzag or other protrusion. shape. When the valve is stationary, the ball 5 is located on the rear side of the container 4; when flushing, the valve is opened, the balls 5 in the container 4 are smoothly along the reduction gear 12 and quickly reach the front side; and when the water is washed, the reduction gear 12 The direction of the arrangement is opposite to that of the ball 5, and the deceleration tooth affects the speed of the ball 5, so that the valve can be slowly closed to allow a small flow of liquid or gas to escape. Other structures of this embodiment are the same as those of the first embodiment.

Embodiment 6

As shown in FIG. 8, the resisting portion 2 may have a slanted pipe opening 20 corresponding to the inclined pipe opening 20, and the sealing baffle 1 may be obliquely covered at the inclined pipe opening, that is, inclined in a sealed state. Shape, so that the entire valve can be used in a pipe placed in an inclined position. Other structures of this embodiment are the same as those of the first embodiment.

Claims

Rights request

A valve comprising an outer casing (3) connectable to other pipes, a retaining portion (2) disposed in the outer casing (3), and a sealing baffle (1) pivotally mounted on the outer casing (3) Cooperating with the resisting portion (2) to close or open the valve, characterized in that: an automatic weight distribution device across the front and rear sides of the sealing baffle (1) is fixedly disposed on the top of the sealing baffle (1), the automatic weight The weight in the distribution device follows the sealing baffle

The swing of (1) moves in the automatic weight distribution device, affecting the opening and closing between the sealing baffle (1) and the resisting portion (2). .

2. A valve according to claim 1, characterized in that the automatic weight distribution means is fixed at the top of the sealing flap (1) at an oblique angle.

3. The valve according to claim 1, characterized in that: the outer casing (3) is provided with an exhaust port (11) on the rear side or the front and rear sides of the sealing baffle (1).

The valve according to any one of claims 1 to 3, characterized in that the automatic weight distribution device comprises a container (4) and a counterweight having at least one ball (5) in the container.

5. Valve according to claim 4, characterized in that the bottom of the container (4) is provided with a reduction tooth (12) which delays the return time of the ball (5).

The valve according to any one of claims 1 to 3, characterized in that the automatic weight distribution device comprises a container (4), a counterweight in the container (4) and a viscous liquid (7).

The valve according to any one of claims 1 to 3, characterized in that the automatic weight distribution device comprises a container (4) in which a partition plate (8) and a viscous liquid are fixed ( 7), there is a gap between the upper and lower sides of the partition plate (8) and the upper and lower inner faces of the container, and the upper gap is larger than the lower gap.

The valve according to any one of claims 1 to 3, characterized in that the automatic weight distribution device comprises a container (4) having a partition plate (8) and a viscous liquid (7) ), spacer (8) The container (4) can be disposed in a one-way swing, and the through hole (9) is disposed on the partition plate (8).

9. Valve according to claim 1, characterized in that the sealing baffle (1) is provided on the side close to the abutting portion (2) with a sealing piece (10) engageable with the abutting portion (2).

10. The valve according to claim 1, wherein: the resisting portion (2) comprises a beveled pipe port (20), and the sealing block (1) can be obliquely covered at the inclined pipe port (20) ).