Novel flue check valve

Abstract

The utility model belongs to the technical field of check valves, and particularly relates to a novel flue check valve which comprises a fixed seat, a wind shield is arranged in the fixed seat, a baffle ring matched with the wind shield for use is arranged in the fixed seat, the wind shield comprises an elastic sealing gasket, a left half plate and a right half plate, the left half plate and the right half plate are rotatably arranged in the fixed seat, and the elastic sealing gasket is arranged on the left half plate and the right half plate. The elastic sealing gasket is connected with the left half plate and the right half plate, a first magnetic part and a second magnetic part which are connected with the left half plate and the right half plate are arranged at the middle end of the elastic sealing gasket, and the first magnetic part and the second magnetic part attract each other. The utility model aims to provide the novel flue check valve which is simple and reasonable in structure, low in manufacturing cost, easy to open the baffle plate and simple in pipeline connection.

Description

Technical Field

[0001] This utility model belongs to the field of check valve technology, and specifically refers to a new type of flue check valve. Background Technology

[0002] The range hood flue check valve is a check device installed between the range hood and the wall flue. Its working principle is that when there is no smoke in the flue, the valve plate closes the check valve flow channel under the action of gravity. When there is smoke in the flue, the smoke pushes open the valve plate, passes through the check valve, and enters the wall flue. However, the two valve plates of the existing range hood flue check valve are independent of each other, and their opening and closing cannot be synchronized. When there is smoke, different opening degrees are easily generated. The valve plate with a smaller opening degree is prone to the accumulation of grease and soot. Over time, this leads to restricted flow and poor smoke exhaust. When there is no smoke, the valve does not close properly, which can easily cause backflow of smoke.

[0003] Chinese Patent Application No. 202421082125.9 discloses a utility model of a flue gas check valve for a range hood, comprising a head section, a middle section, and a tail section. The head section is detachably coaxially inserted into the front side of the middle section, and the rear side of the middle section is detachably inserted into the front side of the tail section. A screw is provided on the tail section, and a clamping plate is screwed onto the screw. Two hinge shafts are symmetrically arranged on the inner side of the middle section, and a meshing gear set is provided between the two hinge shafts. A valve plate is also fixed on each of the two hinge shafts. The valve plates and hinge shafts are all inclined forward. A rubber pad is provided on the front side of the two valve plates. An inclined ring edge is provided on the inner side of the middle section to cooperate with the two valve plates. A magnetic attraction mechanism is provided between the inclined ring edge and the valve plates. Although the above structure can solve the above technical problems, the structure is relatively complex and the manufacturing cost is high. Utility Model Content

[0004] The purpose of this utility model is to provide a new type of flue gas backflow preventer valve with a simple and reasonable structure, low manufacturing cost, easy-to-open baffle, and simple pipe connection.

[0005] The purpose of this utility model is achieved as follows:

[0006] A novel flue gas anti-backflow valve includes a fixed base, within which a baffle plate is disposed. A retaining ring, used in conjunction with the baffle plate, is also disposed within the fixed base. The baffle plate comprises an elastic sealing gasket, a left half-plate, and a right half-plate. The left and right half-plates are rotatably disposed within the fixed base, and the elastic sealing gasket is connected to the left and right half-plates respectively. A magnetic element one and a magnetic element two, connected to the left and right half-plates respectively, are disposed at the middle end of the elastic sealing gasket. The magnetic elements one and two attract each other, and the elastic sealing gasket is always pressed against the retaining ring by the attraction between the magnetic elements one and two.

[0007] In the aforementioned novel flue gas anti-reverse valve, a deformable portion is provided at the middle end of the elastic sealing gasket, and the deformable portion is located between the left half plate and the right half plate.

[0008] In the aforementioned novel flue gas check valve, the magnetic component one and the magnetic component two are located on both sides of the deformable part.

[0009] In the aforementioned novel flue gas check valve, both magnetic component one and magnetic component two include a connecting seat and a magnetic body, with the magnetic body fixed on the connecting seat.

[0010] In the aforementioned novel flue gas check valve, the connecting seat has an L-shaped structure.

[0011] In the aforementioned novel flue gas anti-reverse valve, the baffle plate is inclinedly installed within the fixed base.

[0012] In the aforementioned novel flue gas check valve, the upper and lower ends of the left and right half plates are respectively provided with rotating shafts, the fixed base is provided with a receiving groove for accommodating the rotating shafts, and a limiting seat is detachably provided on the receiving groove.

[0013] In the aforementioned novel flue gas check valve, the fixed base includes a base body and a connecting cylinder. One end of the connecting cylinder is connected to the base body, and the other end is connected to the range hood duct via an elastic clamp.

[0014] In the aforementioned novel flue gas anti-reverse valve, the elastic clamp includes a left half clamp, a right half clamp, a clamp seat, and a tightening spring. The left half clamp and the right half clamp are respectively provided with anti-detachment plates and support columns at both ends. The anti-detachment plates and support columns are both located inside the clamp seat. The tightening spring is sleeved on the support columns of the left half clamp and the right half clamp, and the tightening spring abuts against the anti-detachment plates of the left half clamp and the right half clamp. The left half clamp and the right half clamp are always kept away from each other by means of the elastic force of the tightening spring.

[0015] In the aforementioned novel flue gas anti-reverse valve, the left and right halves are respectively provided with guide plates, and the connecting cylinder is provided with guide grooves that cooperate with the guide plates.

[0016] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0017] The left and right halves of this utility model, along with the elastic sealing gasket and the retaining ring of the fixed base, can form a check valve that can open and close. The elastic sealing gasket is provided with two magnetic components that attract each other, and the magnetic components are connected to the left and right halves of the plate respectively. The edge of the elastic sealing gasket is always in contact with the retaining ring by the attraction of the magnetic components, thus sealing the passage of the check valve. When the fumes are discharged by the range hood, the fumes will be driven by the wind to rotate the left and right halves of the plate, thus expelling the fumes. Attached Figure Description

[0018] Figure 1 This is one of the structural schematic diagrams of this utility model;

[0019] Figure 2 This is the second structural schematic diagram of this utility model;

[0020] Figure 3 This is an enlarged view of point A of this utility model;

[0021] Figure 4 This is an exploded view of the fixing base and elastic clamp of this utility model;

[0022] Figure 5 This is an enlarged view of section B of this utility model;

[0023] Figure 6 This is a cross-sectional view of the present invention;

[0024] Figure 7 This is an enlarged view of section C of this utility model;

[0025] Figure 8 This is a schematic diagram of the elastic clamp structure of this utility model;

[0026] Figure 9 This is an enlarged view of point D of this utility model.

[0027] The meaning of the labels in the diagram:

[0028] 1. Fixed base; 11. Base body; 12. Connecting cylinder; 13. Elastic clamp; 131. Left half clamp; 132. Right half clamp; 133. Clamp seat; 134. Tightening spring; 135. Support column; 136. Guide plate; 137. Guide groove; 138. Anti-detachment plate;

[0029] 2. Windshield; 21. Elastic sealing gasket; 22. Left half plate; 221. Rotating shaft; 222. Receiving groove; 223. Limiting seat; 23. Right half plate; 24. Magnetic component one; 241. Connecting seat; 242. Magnetic body; 25. Magnetic component two; 26. Deformation part. Detailed Implementation

[0030] The present invention will be further described below with reference to specific embodiments:

[0031] like Figures 1-9As shown: A novel flue gas anti-backflow valve includes a fixed base 1, a baffle plate 2 disposed within the fixed base 1, and a retaining ring 3 used in conjunction with the baffle plate 2. The baffle plate 2 includes an elastic sealing gasket 21, a left half plate 22, and a right half plate 23. The left half plate 22 and the right half plate 23 are rotatably disposed within the fixed base 1, and the elastic sealing gasket 21 is connected to the left half plate 22 and the right half plate 23 respectively. A magnetic component 24 and a magnetic component 25, respectively connected to the left half plate 22 and the right half plate 23, are disposed at the middle ends of the elastic sealing gasket 21. The two magnetic components 25 attract each other, and the elastic sealing gasket 21 is always pressed against the retaining ring 3 by the attraction between the magnetic components 24 and 25. Specifically, at least one of the magnetic components 1 and 2 is a magnet, and the other is a magnetically attracted product; or both magnetic components 1 and 2 are magnets. In this way, when the fumes push the left or right half of the plate open with the help of wind, the magnetic components 1 and 2 move away from each other and the magnetic attraction between them decreases due to the rotation of the left or right half of the plate. Thus, the other half of the plate can also be easily pushed open by the fumes. The elastic sealing gasket is a support structure made of rubber or silicone.

[0032] In the aforementioned novel flue gas anti-reverse valve, a deformable part 26 is provided at the middle end of the elastic sealing gasket 21. The deformable part 26 is located between the left half plate 22 and the right half plate 23. Specifically, this facilitates the deformation of the elastic sealing gasket. The elastic sealing gasket can bend as the left and right half plates rotate, and the elastic sealing gasket itself is elastic. When the oil fume stops being emitted, the elastic sealing gasket will automatically reset and further abut against the retaining ring through magnetic component one and magnetic component two.

[0033] In the aforementioned novel flue gas anti-reverse valve, the magnetic component 24 and the magnetic component 25 are located on both sides of the deformable part 26, which facilitates the reset of the elastic sealing gasket.

[0034] In the aforementioned novel flue gas check valve, both the magnetic component 24 and the magnetic component 25 include a connecting seat 241 and a magnetic body 242. The magnetic body 242 is fixed on the connecting seat 241, which has an L-shaped structure. This is specifically to facilitate the attraction between the two magnetic bodies.

[0035] In the aforementioned novel flue gas anti-backflow valve, the baffle plate 2 is inclinedly installed inside the fixed base 1, specifically, this is to facilitate smoke exhaust.

[0036] In the aforementioned novel flue gas anti-reverse valve, the upper and lower ends of the left half plate 22 and the right half plate 23 are respectively provided with rotating shafts 221. The fixed seat 1 is provided with a receiving groove 222 for accommodating the rotating shafts 221, and a limiting seat 223 is detachably provided on the receiving groove 222. Specifically, this is to facilitate the disassembly and assembly of the left half plate and the right half plate.

[0037] In the aforementioned novel flue gas anti-backflow valve, the fixed base 1 includes a base body 11 and a connecting cylinder 12. One end of the connecting cylinder 12 is connected to the base body 11, and the other end is connected to the range hood duct via an elastic clamp 13. The elastic clamp 13 includes a left half clamp 131, a right half clamp 132, a clamp seat 133, and a tightening spring 134. The left half clamp 131 and the right half clamp 132 are respectively provided with anti-detachment plates 138 and support columns 135. Both 138 and support column 135 are located inside the clamp seat 133. The tightening spring 134 is sleeved on the support column 135 of the left half clamp 131 and the right half clamp 132, and the tightening spring 134 abuts against the anti-detachment plate 138 of the left half clamp 131 and the right half clamp 132. The left half clamp 131 and the right half clamp 132 are always kept away from each other by means of the elastic force of the tightening spring 134. Specifically, this makes it convenient to connect pipes of different specifications without the need to set up multiple connecting pipes.

[0038] The left half-clamp 131 and the right half-clamp 132 are respectively provided with guide plates 136, and the connecting cylinder 12 is provided with guide grooves 137 that cooperate with the guide plates 136. Specifically, this is to improve the connection stability between the elastic clamp and the pipeline.

[0039] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A new type of flue check valve comprising a fixed seat (1), characterized in that: The fixed seat (1) is provided with a wind shield (2), the fixed seat (1) is provided with a blocking ring (3) matched with the wind shield (2), the wind shield (2) comprises an elastic sealing gasket (21), a left half plate (22) and a right half plate (23), the left half plate (22) and the right half plate (23) are rotationally arranged in the fixed seat (1), and the elastic sealing gasket (21) is connected with the left half plate (22) and the right half plate (23) respectively, the middle end of the elastic sealing gasket (21) is provided with a magnetic piece one (24) and a magnetic piece two (25) connected with the left half plate (22) and the right half plate (23) respectively, the magnetic piece one (24) and the magnetic piece two (25) attract each other, and the elastic sealing gasket (21) is always abutted on the blocking ring (3) by the attraction force of the magnetic piece one (24) and the magnetic piece two (25).

2. The novel flue check valve according to claim 1, characterized in that: The middle end of the elastic sealing gasket (21) is provided with a deformation part (26), and the deformation part (26) is located between the left half plate (22) and the right half plate (23).

3. The novel flue check valve according to claim 2, characterized in that: The magnetic piece one (24) and the magnetic piece two (25) are located on the two sides of the deformation part (26).

4. The novel flue check valve according to claim 3, characterized in that: The magnetic piece one (24) and the magnetic piece two (25) each comprise a connecting seat (241) and a magnetic body (242), and the magnetic body (242) is fixed on the connecting seat (241).

5. The novel flue check valve according to claim 4, characterized in that: The connecting seat (241) is in L-shaped structure.

6. The novel flue check valve as claimed in claim 1 or 2 or 3 or 4 or 5 wherein: The wind shield (2) is obliquely arranged in the fixed seat (1).

7. The novel flue check valve according to claim 6, characterized in that: The upper and lower ends of the left half plate (22) and the right half plate (23) are respectively provided with rotating shafts (221), the fixed seat (1) is provided with containing grooves (222) containing the rotating shafts (221), and the containing grooves (222) are detachably provided with limiting seats (223).

8. The novel flue check valve according to claim 6, characterized in that: The fixed seat (1) comprises a seat body (11) and a connecting cylinder (12), one end of the connecting cylinder (12) is connected with the seat body (11), and the other end of the connecting cylinder (12) is connected with an oil smoke machine pipeline through an elastic clamp (13).

9. The novel flue check valve according to claim 8, characterized in that: The elastic clamp (13) comprises a left half clamp (131), a right half clamp (132), a clamp seat (133) and a tightening spring (134), the two ends of the left half clamp (131) and the right half clamp (132) are respectively provided with anti-disengagement plates (138) and supporting columns (135), the anti-disengagement plates (138) and the supporting columns (135) are located in the clamp seat (133), the tightening spring (134) is sleeved on the supporting columns (135) of the left half clamp (131) and the right half clamp (132), and the tightening spring (134) abuts against the anti-disengagement plates (138) of the left half clamp (131) and the right half clamp (132), and the left half clamp (131) and the right half clamp (132) are always away from each other by the elastic force of the tightening spring (134).

10. The novel flue check valve according to claim 9, characterized in that: The left half clamp (131) and the right half clamp (132) are respectively provided with guide plates (136), and the connecting cylinder (12) is provided with guide grooves (137) matched with the guide plates (136).

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