Variable weight stack flue check valve

Abstract

The utility model provides variable gravity formula flue check valve, relate to flue check valve technical field, include: mounting panel, the rear surface fixed connection of mounting panel has the exhaust pipe. In the utility model, when using, set up the vane in the exhaust pipe, the inner surface of vane sets up the counterweight, the pull rope is connected between vane and baffle, utilize aerodynamics principle, the lift of vane is produced when high speed gas flows in the exhaust pipe, offset the gravity of vane, cooperate the push of airflow to baffle, make baffle open to the back and turn over and open the exhaust, when there is no gas flow in the exhaust pipe, the gravity of vane and counterweight will pull the pull rope, force baffle to turn over and reset forward, close the exhaust, can effectively solve the problem in background art, the spring check valve of traditional elastic force value changes after being used for a long time, lead to the exhaust pipe to close not tightly, the smoke in public flue pours into indoor exhaust pipe, cause the problem of the generation of peculiar smell in room.

Description

TECHNICAL FIELD

[0001] The utility model relates to flue check valve technical field especially variable gravity type flue check valve. BACKGROUND

[0002] The kitchen oil fume outlet of the housing of the city resident is generally connected with the public smoke exhaust passage, in order to prevent the back smoke and prevent the installation flue check valve at the oil fume exhaust, can effectively prevent the oil fume of the exhaust of the other family in the public smoke exhaust passage from pouring into the own house, to guarantee the air health in the family of the user.

[0003] In prior art, the traditional flue check valve is used to force the baffle to overcome the resilience of the spring by the thrust of indoor exhaust gas when exhausting, so that the baffle is turned over, and the indoor gas can enter the public smoke flue, when there is no indoor exhaust gas, the baffle is reset by the resilience of the spring to block the smoke exhaust pipe, which has the function of one-way exhaust, but after long time use, the resilience of the spring changes, which leads to the smoke exhaust pipe not being tightly closed, the smoke in the public flue pours into the indoor smoke exhaust pipe, which causes the indoor to produce peculiar smell. UTILITY MODEL CONTENTS

[0004] The utility model discloses a variable gravity type flue check valve to solve the problem of the prior art that the resilience of the spring changes after long time use, which leads to the smoke exhaust pipe not being tightly closed, the smoke in the public flue pours into the indoor smoke exhaust pipe, which causes the indoor to produce peculiar smell.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme: a variable gravity type flue check valve, comprising: a mounting plate, the rear surface of the mounting plate is fixedly connected with a smoke exhaust pipe, a fixed seat is arranged on the inner surface of the smoke exhaust pipe close to the rear end face, a baffle is arranged on the rear end face of the fixed seat, a vane is arranged in the smoke exhaust pipe, a pull rope is arranged between the top of the vane and the front surface of the baffle, a counterweight is arranged on the inner surface of the vane, and two suspension ropes are arranged on the outer surfaces of the two sides of the counterweight.

[0006] Preferably, the plurality of suspension ropes are arranged in two groups, and one end of the two groups of suspension ropes is arranged on the inner surface of the smoke exhaust pipe.

[0007] Preferably, the top of the vane is arc-shaped, and the bottom of the vane is flat.

[0008] Preferably, the inner surface of the smoke exhaust pipe is fixedly connected with a fixed rod, and the fixed rod is arranged in a matched mode with the pull rope.

[0009] Preferably, the rear surface edge of the fixed seat is fixedly connected with a mounting block, and the top of the mounting block is fixedly connected with a fixed block in a symmetrical mode.

[0010] Preferably, the two fixed blocks are fixedly connected with a fixed shaft between the opposite outer surfaces, the outer surface of the fixed shaft is rotatably connected with a connecting block, and the connecting block is fixedly connected to the bottom of the baffle.

[0011] Preferably, mounting holes are formed in the front surface of the mounting plate near four corner positions, and the inner diameter of the mounting holes is equal to the inner diameter of the smoke exhaust pipe.

[0012] Preferably, a plurality of triangular blocks are fixedly connected to the outer surface of the smoke exhaust pipe at equal intervals, and the front surfaces of the plurality of triangular blocks are fixedly connected to the rear surface of the mounting plate.

[0013] Compared with the prior art, the utility model has the advantages and positive effects that,

[0014] 1、in the utility model, when in use, the blade is arranged in the smoke exhaust pipe, the counterweight is arranged on the inner surface of the blade, the pull rope is connected between the blade and the baffle, the aerodynamic principle is utilized, the lift is generated when the blade flows in the high speed gas in the smoke exhaust pipe, the gravity of the blade is offset, the baffle is opened by the cooperation of the air flow, the smoke is discharged, when there is no gas flow in the smoke exhaust pipe, the gravity of the blade and the counterweight pulls the pull rope, forces the baffle to turn over to reset, and the smoke outlet is closed, the problem that the smoke in the public flue flows back into the indoor smoke exhaust pipe and causes the indoor smell due to the change of the spring force value of the traditional spring check valve after long-term use can be effectively solved.

[0015] 2、in the utility model, when in use, the mounting holes are formed in the front surface of the mounting plate, the flue check valve is installed on the flue wall body, the plurality of triangular blocks are connected between the mounting plate and the smoke exhaust pipe at equal intervals, the strength is increased, and the practicability is high. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 a perspective view of the variable gravity type flue check valve is provided for the utility model;

[0017] Figure 2 a rear view of the variable gravity type flue check valve is provided for the utility model;

[0018] Figure 3 a sectional view of the variable gravity type flue check valve is provided for the utility model;

[0019] Figure 4 a baffle structure diagram of the variable gravity type flue check valve is provided for the utility model;

[0020] Figure 5 a partial structure diagram of the variable gravity type flue check valve is provided for the utility model.

[0021] Legend: 1. Mounting plate; 2. Exhaust pipe; 3. Fixing seat; 4. Baffle; 5. Fixing rod; 6. Pull rope; 7. Blade; 8. Counterweight; 9. Mounting block; 10. Fixing block; 11. Fixing shaft; 12. Connecting block; 13. Suspension rope; 14. Mounting hole; 15. Triangular block. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Example 1: As Figures 1-4 As shown, this utility model provides a variable gravity flue check valve, including: a mounting plate 1, a flue pipe 2 fixedly connected to the rear surface of the mounting plate 1, a fixing seat 3 provided on the inner surface of the flue pipe 2 near the rear end face, a baffle 4 provided on the rear end face of the fixing seat 3, a blade 7 provided inside the flue pipe 2, a pull rope 6 provided between the top of the blade 7 and the front surface of the baffle 4, a counterweight 8 provided on the inner surface of the blade 7, and two suspension ropes 13 provided on the outer surfaces of both sides of the counterweight 8, with the multiple suspension ropes 13 arranged in two sets, and the two sets of suspension ropes 13 One end of each blade 7 is set on the inner surface of the exhaust pipe 2. The top of the blade 7 is arc-shaped and the bottom of the blade 7 is flat. A fixing rod 5 is fixedly connected to the inner surface of the exhaust pipe 2. The fixing rod 5 is matched with the pull rope 6. An installation block 9 is fixedly connected to the rear edge of the fixing seat 3. A fixing block 10 is symmetrically fixedly connected to the top of the installation block 9. A fixing shaft 11 is fixedly connected between the opposite outer surfaces of the two fixing blocks 10. A connecting block 12 is rotatably connected to the outer surface of the fixing shaft 11. The connecting block 12 is fixedly connected to the bottom of the baffle 4.

[0025] The effect achieved by the whole embodiment 1 is that when the variable gravity flue check valve is used, after the indoor oil fume enters the exhaust pipe 2 under the action of the range hood, the smoke flow will exert a pushing force on the baffle 4, at the same time, the cross-section like the blade 7 of an airplane wing will generate an upward force under the action of high-speed airflow and rise in the exhaust pipe 2. By arranging multiple suspension ropes 13 between the two sides of the counterweight block 8 and the exhaust pipe 2, the rising blade 7 can be constrained to rise smoothly in the exhaust pipe 2. The lifting force generated by the rising of the blade 7 offsets the gravity of the counterweight block 8. The pull rope 6 connected between the baffle 4 and the blade 7 will slide synchronously on the surface of the fixed rod 5, so that the connecting block 12 connected at the bottom of the baffle 4 will rotate on the outer surface of the fixed shaft 11, until the baffle 4 is turned backward and opened to generate a certain size gap, so that the smoke flow in the exhaust pipe 2 enters the public flue. When there is no smoke flow in the exhaust pipe 2, the blade 7 will not generate an upward force, and the gravity of the counterweight block 8 will drive the blade 7 to move downward, and the pull rope 6 will exert a pulling force on the baffle 4, so that the baffle 4 will reset and turn over to tightly fit the fixed seat 3, which can effectively prevent the smoke in the public flue from flowing backward into the exhaust pipe 2 and causing odor in the room.

[0026] Embodiment 2: As shown in Figures 1-4 The front surface of the mounting plate 1 is provided with mounting holes 14 near the four corners, the inner diameter of the mounting holes 14 is equal to the inner diameter of the exhaust pipe 2, and the outer surface of the exhaust pipe 2 is fixedly connected with multiple triangular blocks 15, and the front surfaces of the multiple triangular blocks 15 are fixedly connected with the rear surface of the mounting plate 1.

[0027] The effect achieved by the whole embodiment 2 is that when used, by arranging multiple mounting holes 14 on the front surface of the mounting plate 1, the flue check valve can be easily installed on the flue wall, and by connecting multiple triangular blocks 15 between the mounting plate 1 and the exhaust pipe 2, the strength is increased, and the practicability is high.

[0028] Working principle: when the variable gravity type flue check valve is used, the indoor oil fume enters the smoke exhaust pipe 2 under the action of the oil smoke machine, the smoke flow will exert a thrust on the baffle 4, at the same time, the section like the blade 7 of the aircraft wing will produce the floating force under the action of the high-speed airflow, and rise in the smoke exhaust pipe 2, by arranging a plurality of suspension ropes 13 between the two sides of the counterweight block 8 and the smoke exhaust pipe 2, the rising blade 7 can be constrained, so that it can rise stably in the smoke exhaust pipe 2, the lifting force generated by the blade 7 is used to offset the gravity of the counterweight block 8, the pull rope 6 connected between the baffle 4 and the blade 7 will slide synchronously on the surface of the fixed rod 5, so that the connecting block 12 connected at the bottom of the baffle 4 will rotate on the outer surface of the fixed shaft 11, until the baffle 4 is turned back and opened, a certain size gap is generated, so that the smoke flow in the smoke exhaust pipe 2 enters the public flue, when there is no smoke flow in the smoke exhaust pipe 2, the blade 7 will not produce the lifting force, the gravity of the counterweight block 8 will drive the blade 7 to move downward, the pull rope 6 will exert a pulling force on the baffle 4, so that the baffle 4 will reset and turn over and tightly fit with the fixed seat 3, which can effectively prevent the smoke in the public flue from flowing backward into the smoke exhaust pipe 2, causing the indoor odor, by opening a plurality of mounting holes 14 on the front surface of the mounting plate 1, the flue check valve can be installed on the flue wall, by connecting a plurality of triangular blocks 15 between the mounting plate 1 and the smoke exhaust pipe 2 at equal intervals, the strength is increased, and the practicability is high.

[0029] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made on the basis of the technical essence of the present application to the above embodiments still belongs to the protection scope of the present application.

Claims

1. A variable-gravity flue check valve characterized in that, Include: The rear surface of the mounting plate (1) is fixedly connected with the smoke exhaust pipe (2), the inner surface of the smoke exhaust pipe (2) is provided with a fixed seat (3) near the rear end face, the rear end face of the fixed seat (3) is provided with a baffle (4), the inside of the smoke exhaust pipe (2) is provided with a blade (7), the top of the blade (7) and the front surface of the baffle (4) are provided with a pull rope (6), the inner surface of the blade (7) is provided with a counterweight (8), the two outer surfaces of the counterweight (8) are respectively provided with two suspension ropes (13).

2. The variable-gravity flue check valve of claim 1, wherein: A plurality of the suspension ropes (13) are provided as two groups, one end of the two groups of the suspension ropes (13) is arranged on the inner surface of the smoke exhaust pipe (2).

3. The variable-gravity flue check valve of claim 2, wherein: The top of the blade (7) is arc-shaped, and the bottom of the blade (7) is flat.

4. The variable-gravity flue check valve of claim 3, wherein: The inner surface of the smoke exhaust pipe (2) is fixedly connected with a fixed rod (5), and the fixed rod (5) is matched with the pull rope (6).

5. The variable-gravity flue check valve of claim 4, wherein: The rear surface edge of the fixed seat (3) is fixedly connected with a mounting block (9), and the top of the mounting block (9) is fixedly connected with a fixed block (10).

6. The variable-gravity flue check valve of claim 5, wherein: The opposite outer surfaces of the two fixed blocks (10) are fixedly connected with a fixed shaft (11), the outer surface of the fixed shaft (11) is rotatably connected with a connecting block (12), and the connecting block (12) is fixedly connected with the bottom of the baffle (4).

7. The variable-gravity flue check valve of claim 6, wherein: The front surface of the mounting plate (1) is provided with a mounting hole (14) near the four corners, and the inner diameter of the mounting hole (14) is equal to the inner diameter of the smoke exhaust pipe (2).

8. The variable-gravity flue check valve of claim 7, wherein: The outer surface of the smoke exhaust pipe (2) is fixedly connected with a plurality of triangular blocks (15), and the front surfaces of the plurality of triangular blocks (15) are fixedly connected with the rear surface of the mounting plate (1).

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