CN218935382U

CN218935382U - Fireproof check valve

Info

Publication number: CN218935382U
Application number: CN202122276968.5U
Authority: CN
Inventors: 黄薪存; 潘传祥
Original assignee: Hubei Lianzhi Technology Co ltd
Current assignee: Hubei Lianzhi Technology Co ltd
Priority date: 2021-09-21
Filing date: 2021-09-21
Publication date: 2023-04-28
Anticipated expiration: 2031-09-21

Abstract

The utility model provides a fireproof check valve, which comprises an oil smoke tube, a valve cover plate, a fireproof temperature-sensing fusing device, a locking structure and a first elastic component, wherein the valve cover plate is rotatably connected to an exhaust port of the oil smoke tube; when the fireproof temperature-sensing fusing device fuses at a high temperature, the locking structure unlocks the first elastic component, so that the first elastic component abuts against the valve cover plate, and the valve cover plate is covered at the exhaust port of the oil smoke cylinder. The utility model has simple structure, and can ensure that the first elastic part rapidly supports against the valve cover plate, thereby pressing the valve cover plate at the exhaust port of the oil smoke cylinder, safely closing the passageway between the shared exhaust duct of the building and the indoor space, preventing smoke and fire from spreading and flowing back into the house.

Description

Fireproof check valve

Technical Field

The utility model relates to the technical field of check valves, in particular to a fireproof check valve.

Background

The kitchen using public smoke exhaust or exhaust duct is provided with fireproof check valves, so as to prevent smoke and fire in the shared pipeline from flowing back into the user room when other floors are in fire. The fireproof check valve is generally composed of a check valve plate, a fireproof valve body and a fireproof valve seat, when fire occurs in other floors, the check valve plate falls down and seals the fireproof valve body, so that smoke and fire cannot spread and flow back into the fire-proof valve body. The existing fireproof check valve of the building exhaust duct is complex in structure and poor in fireproof effect, so that a novel fireproof check valve with a simple structure and good fireproof effect is needed.

Disclosure of Invention

In view of the above, the utility model provides a fireproof check valve with simple structure and good fireproof effect.

The technical scheme of the utility model is realized as follows: the utility model provides a fireproof check valve, which comprises an oil smoke tube and a valve cover plate, wherein the valve cover plate is rotatably connected to an exhaust port of the oil smoke tube so as to open or close the exhaust port of the oil smoke tube.

On the basis of the technical scheme, the oil smoke tube is characterized by preferably further comprising a fireproof temperature-sensing fusing device, a locking structure and a first elastic component, wherein the fireproof temperature-sensing fusing device, the locking structure and the first elastic component are all arranged on the outer side wall of the oil smoke tube; the locking structure is used for locking the first elastic component, so that the first elastic component and the valve cover plate are in mutually independent states, and the closing of the valve cover plate is not affected; the fireproof temperature-sensing fusing device enables the locking structure to be in a locking state; when the fireproof temperature-sensing fusing device is not disconnected, the locking structure is in a locking state; when the fireproof temperature-sensing fusing device fuses at a high temperature, the locking structure unlocks the first elastic component, so that the first elastic component abuts against the valve cover plate, and the valve cover plate is covered at the exhaust port of the oil smoke cylinder.

On the basis of the technical scheme, preferably, the locking structure comprises a power component and a locking component, wherein the power component is arranged on the oil smoke tube and is used for driving or inhibiting the locking component to work; the locking component is arranged on the power component and used for locking the first elastic component.

On the basis of the technical scheme, preferably, the power component comprises a connecting rod, a spring and a supporting element, wherein the connecting rod is arranged on the fireproof temperature-sensing fusing device and is parallel to the axis of the oil smoke cylinder, the supporting element is arranged on the connecting rod, and the spring is sleeved on the connecting rod and is positioned between the fireproof temperature-sensing fusing device and the supporting element; one end of the spring far away from the supporting element is supported on the side wall of the oil smoke cylinder.

On the basis of the technical scheme, preferably, the locking part is sleeved on the connecting rod and is positioned between the spring and the supporting element, the locking part comprises at least one vertical part, the vertical part is close to the valve cover plate, and the power end of the first elastic part supports against the vertical part; the vertical part separates the first elastic component from the valve cover plate, so that the elastic component and the valve cover plate are in mutually independent states; when the fusing part is disconnected, under the drive of the power part, the locking part is sprung up, and the first elastic part is separated from the vertical part and further abuts against the valve cover plate, so that the valve cover plate covers the exhaust port of the oil smoke cylinder.

On the basis of the above technical scheme, preferably, the power component further comprises a connecting ring, the fireproof temperature-sensing fusing device is provided with a through hole, the connecting ring penetrates through the through hole, one end, close to the fireproof temperature-sensing fusing device, of the connecting rod is provided with a barb, and under the action of the fireproof temperature-sensing fusing device and the power component, the barb is in fastening connection with the connecting ring.

On the basis of the technical scheme, the oil smoke pipe is preferably further provided with a second elastic component, wherein the second elastic component is arranged on the outer side wall of the oil smoke pipe, one end of the second elastic component abuts against the outer side wall of the oil smoke pipe, and the other end of the second elastic component abuts against the valve cover plate; when no air passes through the interior of the oil smoke cylinder, the second elastic component abuts against the valve cover plate, so that the valve cover plate covers the exhaust port of the oil smoke cylinder.

On the basis of the technical scheme, preferably, an adjusting plate is further arranged between the valve cover plate and the second elastic component and used for adjusting the power of the second elastic component; the regulating plate is vertically arranged on the surface of the valve cover plate, grooves with different depths are formed in one end, far away from the valve cover plate, of the regulating plate, and the second elastic component abuts against the grooves.

On the basis of the technical scheme, preferably, the first elastic component and the second elastic component are torsion springs.

On the basis of the technical scheme, the oil smoke pipe is characterized by preferably further comprising a shield, wherein the shield is arranged on the outer side of the oil smoke pipe, and the valve cover plate is positioned inside the shield and is opened or closed along the inner side wall of the shield.

On the basis of the technical scheme, preferably, the inner side wall of the shield is provided with a limiting plate for limiting the opening angle of the valve cover plate, and the limiting plate is vertically arranged at the edge of the inner side wall of the shield; when the valve cover plate is opened by the airflow in the oil smoke cylinder, the edge of the valve cover plate abuts against the limiting plate, so that the valve cover plate is in an open state with a certain angle.

Compared with the prior art, the fireproof check valve has the following beneficial effects:

(1) Through locking structural component, when fire prevention temperature sensing fuse device did not break off, locking structure was with first elastomeric element locking, made first elastomeric element and valve cover plate be in mutual independence state, did not influence the daily lid of valve cover plate and closes. When the fireproof temperature-sensing fusing device fuses at a high temperature, the locking structure unlocks the first elastic component, so that the first elastic component abuts against the valve cover plate, and the valve cover plate is covered at the exhaust port of the oil smoke cylinder.

(2) When the fireproof temperature-sensing fusing device fuses at a high temperature through the power component, the connecting rod is separated from the fireproof temperature-sensing fusing device, the first elastic component is rapidly separated from the locking component to prop against the valve cover plate, and therefore the valve cover plate is covered at the exhaust port of the oil smoke cylinder; the valve cover plate is fast to close and has good fireproof effect.

(3) Through setting up the regulating plate, can adjust the torsion of torsional spring, make the valve apron closely cover close in the gas vent of oil smoke section of thick bamboo, prevent that the smoke flavor from jumping backward, increase flue valve's life.

(4) The limiting plate is arranged on the protective cover, so that the maximum opening angle of the valve cover plate can be controlled, and smoke exhaust is facilitated.

Drawings

In order to more clearly illustrate the embodiments of the 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, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a left side view of a fire protection check valve of the present utility model;

FIG. 2 is a block diagram of a booster member, an elastic member, a locking member and a support member of the fire-resistant check valve of the present utility model;

FIG. 3 is a block diagram of an adjusting plate of the fire check valve of the present utility model;

fig. 4 is a rear view of a fire protection check valve of the present utility model.

In the figure, a 1-oil chimney, a 2-valve cover plate, a 3-fireproof temperature-sensitive fusing device, a 4-locking structure, a 5-first elastic component, a 6-second elastic component, a 7-adjusting plate, an 8-shield, a 41-power component, a 42-locking component, a 411-connecting rod, a 412-spring, a 413-abutting element, a 421 vertical part, a 414-connecting ring, a 31-through hole, a 415-barb and an 81-limiting plate.

Detailed Description

The following description of the embodiments of the present utility model will clearly and fully describe the technical aspects of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.

As shown in fig. 1 to 4, the fireproof check valve of the present utility model comprises an oil smoke tube 1 and a valve cover plate 2, wherein the valve cover plate 2 is hinged on an exhaust port of the oil smoke tube 1 to open or close the exhaust port of the oil smoke tube 1; when the air flow passes through the interior of the oil smoke cylinder, the valve cover plate is turned over under the action of the air flow; then the valve cover plate is covered on the exhaust port of the oil smoke cylinder under the gravity action of the valve cover plate, thereby preventing external oil smoke from entering the chamber and meeting the daily smoke exhaust.

In a specific embodiment, in order to prevent fire disaster of other floors, smoke and fire in the shared pipeline flows back into the user room, a fireproof check valve is arranged on the oil smoke tube, and the fireproof check valve specifically comprises a fireproof temperature-sensing fuse device 3, a locking structure 4 and a first elastic component 5, and the fireproof temperature-sensing fuse device, the locking structure and the first elastic component are all arranged on the outer side wall of the oil smoke tube.

Locking structure: the locking mechanism is used for locking the first elastic component 5, so that the first elastic component 5 and the valve cover plate 2 are in mutually independent states, and the covering of the valve cover plate 2 is not affected.

Fireproof temperature-sensing fusing device: the fireproof temperature-sensing fusing device is a fusing piece, the fusing temperature is 150 ℃, and when the temperature is lower than 150 ℃, the fireproof temperature-sensing fusing device enables the locking structure 4 to be in a locking state; when the temperature is higher than 150 ℃, the fireproof temperature-sensing fusing device is automatically disconnected, and the locking structure is unlocked, so that the first elastic component is recovered to be elastic.

A first elastic member: the first elastic component is hinged at the exhaust port of the oil smoke cylinder; the two torsion bars of the first elastic component are propped against the locking structure, and after the first elastic component is separated from the locking structure, the first elastic component plays a role in propping against the valve cover plate to enable the valve cover plate to cover the exhaust port of the oil smoke cylinder.

Working principle: in daily life, the temperature of the oil smoke section of thick bamboo is less than the temperature that fire prevention temperature sensing fuse device disconnected, and fire prevention temperature sensing fuse device does not break off, and locking structure 4 is in locking state. When a fire disaster occurs, the fireproof temperature-sensing fusing device fuses at a high temperature, and the locking structure unlocks the first elastic component, so that the first elastic component abuts against the valve cover plate, and the valve cover plate is covered at the exhaust port of the oil smoke tube, thereby preventing flame and smoke from channeling into the chamber.

Specifically, the locking structure 4 comprises two parts, namely a power component 41 and a locking component 42, wherein the power component 41 is detachably arranged on the oil smoke tube 1 and is used for driving or inhibiting the locking component 42 to work; the locking member 42 is mounted on the power member 41 for locking the first elastic member 5. The first elastic component is locked under the combined action of the power component and the locking component.

Specifically, the power component 41 includes a connecting rod 411, a spring 412 and a supporting element 413, wherein the connecting rod 411 is welded on the fireproof temperature-sensing fuse device 3 and is parallel to the axis of the oil smoke tube 1, the supporting element 413 is welded on the connecting rod 411, and the spring 412 is sleeved on the connecting rod 411 and is positioned between the fireproof temperature-sensing fuse device 3 and the supporting element 413; the end of the spring 412 remote from the abutment element 413 abuts against the side wall of the cartridge 1.

When the fireproof temperature-sensing fusing device fuses at a high temperature, the spring drives the connecting rod to separate from the fireproof temperature-sensing fusing device, the first elastic component is quickly separated from the locking component to prop against the valve cover plate, and the valve cover plate is covered at the exhaust port of the oil smoke cylinder; the valve cover plate has the advantages of rapid closing action and preventing smoke and fire from spreading and flowing backward to the user.

Preferably, the abutment element 413 is a nut, which can adjust the locking degree of the locking member.

Specifically, the locking member 42 is sleeved on the connecting rod 411 and is clamped between the spring 412 and the abutting element 413, the locking member 42 includes at least one vertical portion 421, the vertical portion 421 is close to the valve cover plate 2, the power end of the first elastic member 5 abuts against the vertical portion 421, and the vertical portion separates the first elastic member 5 from the valve cover plate, so that the first elastic member and the valve cover plate are in mutually independent states.

Working principle: the vertical part 421 separates the first elastic component 5 from the valve cover plate 2, so that the elastic component and the valve cover plate 2 are in mutually independent states; when the fusing part is disconnected, the locking part 42 is sprung up under the driving of the power part 41, and the first elastic part 5 is separated from the vertical part 421 and further abuts against the valve cover plate 2, so that the valve cover plate 2 covers the exhaust port of the oil smoke tube 1.

In a specific embodiment, in order to prevent the fire-proof temperature-sensitive fusing device from being broken, the connecting rod falls into the oil chimney, and a barb 415 is disposed at one end of the connecting rod 411, which is close to the fire-proof temperature-sensitive fusing device 3.

In a specific embodiment, in order to prevent the occurrence of fire, the temperature is too high, the locking structure is burnt out, a connecting ring 414 is arranged between the connecting rod and the fireproof temperature-sensing fuse device, the through hole 31 is formed in the fireproof temperature-sensing fuse device 3, the connecting ring 414 penetrates through the through hole 31, and under the action of the fireproof temperature-sensing fuse device 3 and the power component, the barb 415 is in fastening connection with the connecting ring 414.

In order to prevent the valve cover plate from being difficult to cover due to too large opening and closing angle, a second elastic part 6 is arranged on the oil smoke tube. Preferably, the second elastic member is a torsion spring. The second elastic component is hinged to the outer side wall of the oil smoke tube, one torsion bar of the second elastic component is propped against the oil smoke tube, and the other torsion bar is propped against the valve cover plate. When no air flow passes through the interior of the oil smoke cylinder, the valve cover plate covers the exhaust port of the oil smoke cylinder under the action of the second elastic part; when the air flow passes through the interior of the oil smoke tube, the valve cover plate leaves the oil smoke tube under the action of the air flow, so that the oil smoke discharging function is achieved.

In a specific embodiment, in order to adjust the torsion of the second elastic component 6, the valve cover plate is fastened and covered at the exhaust port of the oil smoke tube, and an adjusting plate 7 is additionally arranged. The regulating plate is located between valve apron 2 and second elastomeric element 6, the regulating plate is installed perpendicularly on valve apron surface, and the recess of different degree of depth has been seted up to the one end that the regulating plate kept away from valve apron, the second elastomeric element supports and holds in recess department. The second elastic component is propped against different grooves, so that the compression force of the second elastic component is increased, the valve cover plate is tightly covered at the exhaust port of the oil smoke cylinder, and the smoke exhaust port has the advantages of preventing smoke from flowing backwards and prolonging the service life of the flue valve.

In a specific embodiment, a shield 8 is also provided to protect the fire-proof check valve and the oil smoke diffusion. The shield 8 is installed outside the oil chimney 1, and the valve cover plate 2 is positioned inside the shield 8 and is opened or closed along the inner side wall of the shield 8.

In a specific embodiment, in order to prevent the valve cover plate from being too large in opening angle and being difficult to cover, or because the angle is large in opening and closing, external smoke enters the chamber, a limiting plate for limiting the opening and closing angle is additionally arranged. Specifically, the limiting plate 81 is vertically installed at the edge of the inner side wall of the shield 8; when the valve cover plate 2 is opened by the airflow in the oil smoke tube 1, the edge of the valve cover plate 2 abuts against the limiting plate 81, so that the valve cover plate 2 is in an open state with a certain angle. The opening and closing angle can be designed according to specific conditions, and the preferable opening and closing angle is 60 degrees.

The fireproof check valve is arranged on the range hood or the exhaust fan of a bathroom of a kitchen through the range hood, when the range hood or the exhaust fan is started in daily life, the valve cover plate is in an open-close state under the action of wind force, and when the range hood or the exhaust fan is shut down, the valve cover plate covers the exhaust port of the range hood under the action of the second elastic component, so that the effects of exhausting smoke and exhausting gas in daily life are achieved. When the temperature in the oil smoke tube exceeds 150 ℃ or the temperature reaches the fusing temperature of the fireproof temperature-sensitive fusing device, the fireproof temperature-sensitive fusing device is disconnected, the locking device connected with the fireproof temperature-sensitive fusing device moves upwards under the acting force of the spring, the first elastic part in the locking device returns to the elastic force to touch the valve cover plate, so that the valve cover plate is forcedly covered on the exhaust port of the oil smoke tube, and the effects of preventing smoke and fire from spreading, filling the user and preventing fire are achieved.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The fireproof check valve comprises an oil smoke tube (1) and a valve cover plate (2), wherein the valve cover plate (2) is rotatably connected to an exhaust port of the oil smoke tube (1) so as to open or close the exhaust port of the oil smoke tube (1); the method is characterized in that: the oil smoke tube further comprises a fireproof temperature-sensing fusing device (3), a locking structure (4) and a first elastic component (5), wherein the fireproof temperature-sensing fusing device (3), the locking structure (4) and the first elastic component (5) are all arranged on the outer side wall of the oil smoke tube (1); the locking structure (4) is used for locking the first elastic component (5), so that the first elastic component (5) and the valve cover plate (2) are in mutually independent states, and the closing of the valve cover plate (2) is not affected; the fireproof temperature-sensing fusing device (3) enables the locking structure (4) to be in a locking state; when the fireproof temperature-sensing fusing device (3) is not disconnected, the locking structure (4) is in a locking state; when the fireproof temperature-sensing fusing device (3) fuses at a high temperature, the locking structure (4) unlocks the first elastic component (5), so that the first elastic component (5) abuts against the valve cover plate (2), and the valve cover plate (2) is covered at the exhaust port of the oil smoke barrel (1).

2. A fire protection check valve as defined in claim 1, wherein: the locking structure (4) comprises a power component (41) and a locking component (42), wherein the power component (41) is arranged on the oil smoke tube (1) and is used for driving or inhibiting the locking component (42) to work; the locking part (42) is arranged on the power part (41) and is used for locking the first elastic part (5).

3. A fire protection check valve as defined in claim 2, wherein: the power component (41) comprises a connecting rod (411), a spring (412) and a supporting element (413), wherein the connecting rod (411) is arranged on the fireproof temperature-sensing fusing device (3) and is parallel to the axis of the oil smoke barrel (1), the supporting element (413) is arranged on the connecting rod (411), and the spring (412) is sleeved on the connecting rod (411) and is positioned between the fireproof temperature-sensing fusing device (3) and the supporting element (413); one end of the spring (412) far away from the supporting element (413) is supported on the side wall of the oil smoke barrel (1); the locking component (42) is sleeved on the connecting rod (411) and is positioned between the spring (412) and the supporting element (413), the locking component (42) comprises at least one vertical part (421), the vertical part (421) is close to the valve cover plate (2), and the power end of the first elastic component (5) supports against the vertical part (421); the vertical part (421) separates the first elastic component (5) from the valve cover plate (2) so that the elastic component and the valve cover plate (2) are in mutually independent states; when the fusing part is disconnected, under the drive of the power part (41), the locking part (42) is sprung, the first elastic part (5) is separated from the vertical part (421) and further abuts against the valve cover plate (2), so that the valve cover plate (2) covers the exhaust port of the oil smoke barrel (1).

4. A fire protection check valve as defined in claim 3, wherein: the power component (41) further comprises a connecting ring (414), a through hole (31) is formed in the fireproof temperature-sensitive fusing device (3), the connecting ring (414) penetrates through the through hole (31), a barb (415) is arranged at one end, close to the fireproof temperature-sensitive fusing device (3), of the connecting rod (411), and the barb (415) is fixedly connected with the connecting ring (414) under the action of the fireproof temperature-sensitive fusing device (3) and the power component.

5. A fire protection check valve as defined in claim 1, wherein: the oil smoke tube also comprises a second elastic component (6), wherein the second elastic component (6) is arranged on the outer side wall of the oil smoke tube (1), one end of the second elastic component (6) is propped against the outer side wall of the oil smoke tube (1), and the other end is propped against the valve cover plate (2); when no air passes through the interior of the oil smoke tube (1), the second elastic component (6) props against the valve cover plate (2) to cover the exhaust port of the oil smoke tube (1).

6. A fire protection check valve as defined in claim 5, wherein: an adjusting plate (7) is further arranged between the valve cover plate (2) and the second elastic component (6) and is used for adjusting the power of the second elastic component (6); the adjusting plate (7) is vertically arranged on the surface of the valve cover plate (2), grooves with different depths are formed in one end, far away from the valve cover plate (2), of the adjusting plate (7), and the second elastic component (6) abuts against the grooves.

7. A fire protection check valve as defined in claim 5, wherein: the first elastic component (5) and the second elastic component (6) are torsion springs.

8. A fire protection check valve as defined in claim 1, wherein: the oil smoke tube valve further comprises a shield (8), wherein the shield (8) is arranged on the outer side of the oil smoke tube (1), and the valve cover plate (2) is located inside the shield (8) and is opened or closed along the inner side wall of the shield (8).

9. A fire protection check valve as defined in claim 8, wherein: the inner side wall of the shield (8) is provided with a limiting plate (81) for limiting the opening angle of the valve cover plate (2), and the limiting plate (81) is vertically arranged at the edge of the inner side wall of the shield (8); when the valve cover plate (2) is flushed by the air flow in the oil smoke cylinder (1), the edge of the valve cover plate (2) abuts against the limiting plate (81), so that the valve cover plate (2) is in an open state with a certain angle.