CN217381761U

CN217381761U - Flue check valve

Info

Publication number: CN217381761U
Application number: CN202221052646.0U
Authority: CN
Inventors: 高沭; 梁晓燕
Original assignee: Gaomi Xinhao Hardware Products Co ltd
Current assignee: Gaomi Xinhao Hardware Products Co ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-09-06
Anticipated expiration: 2032-05-05

Abstract

The utility model discloses a flue check valve, which belongs to the field of check valves and comprises a valve body and a valve block, wherein the valve block is rotatably arranged on the valve body through a rotating shaft to block a vent, a limiting mechanism for controlling the rotation of the valve block is arranged between the valve block and the valve body, the limiting mechanism comprises a first reset piece and a main limiting piece, the first reset piece is connected on the rotating shaft, and two ends of the first reset piece are respectively butted on the valve block and the valve body; the main locating part comprises a locking shaft and a main locking part, the main locking part is connected to the valve body in a rotating mode through the locking shaft, the locking shaft is connected with a second reset part, two ends of the second reset part are respectively abutted to the main locking part and the valve body, a main fuse part is connected between the main locking part and the valve body, the main fuse part enables the second to reset and stores energy, and one end of the main fuse part, after being fused at high temperature, of the second reset part pushes the main locking part to lock the valve plate. The utility model discloses an above-mentioned structure can improve the security level of flue check valve, when having the high temperature condition in public flue, can in time lock the flue check valve of dying.

Description

Flue check valve

Technical Field

The utility model relates to a check valve field, concretely relates to flue check valve.

Background

The flue check valve is designed at a flue opening to realize the non-return function, the valve plate is rotatably arranged at a vent of the valve body by utilizing a pin shaft in the conventional flue check valve, when the range hood is not used, the valve plate is in a closed state due to self gravity, the valve plate can cover the vent, and when the range hood is used, the valve plate is opened by the impact force of the range hood and is far away from the vent.

Most flue check valves do not set up the structure that high temperature fusing locks the check valve at present, consequently in case face from in the public flue through the flue check valve get into indoor fire initiation consequence will be very serious, if a family takes place the conflagration, and the user is using smoke ventilator or does not close the flue check valve this moment, and a large amount of high temperature flame and harmful toxic gas get into user's family through public flue to influence user's life safety.

To the problem that above-mentioned prior art exists, the utility model designs and manufactures a flue check valve, overcomes above-mentioned defect.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, the utility model provides a pair of flue check valve can improve the security level of flue check valve, when having the high temperature condition in public flue, can in time lock the flue check valve of dying.

In order to realize the purpose, the utility model discloses a technical scheme as follows: a flue check valve comprises a valve body and a valve plate, wherein a vent is arranged on the valve body, a rotating shaft is arranged above the vent, the valve plate is rotatably arranged on the valve body through the rotating shaft to block the vent, and a limiting mechanism is arranged between the valve plate and the valve body and can control the valve plate to rotate;

the limiting mechanism comprises a first resetting piece and a main limiting piece, the first resetting piece is connected to the rotating shaft, and two ends of the first resetting piece respectively abut against the valve plate and the valve body;

the main locating part includes locking shaft and main retaining member, the locking shaft sets up on the valve body, main retaining member rotates through the locking shaft to be connected on the valve body, the epaxial second that is connected with of locking resets, the second resets the both ends of piece conflict respectively main retaining member with on the valve body, main retaining member with be connected with main fuse-link between the valve body, main fuse-link makes the second resets an energy storage, main fuse-link high temperature fuses the back the second resets one end and promotes main retaining member lock dead valve block.

Preferably, the valve body comprises a perforated connecting plate, a support is connected to the rear of the perforated connecting plate, and the front and rear of the hole of the perforated connecting plate are respectively provided with a front pipe body and a rear pipe body;

the valve block is plugged on the rear pipe body, and the rotating shaft and the limiting mechanism are connected on the rear pipe body.

Preferably, a first connecting piece is connected above the rear pipe body, and the rotating shaft is arranged on the first connecting piece;

a second connecting piece is connected behind the valve plate, and the valve plate is rotatably connected to the rotating shaft through the second connecting piece;

the two ends of the first reset piece respectively abut against the second connecting piece and the first connecting piece.

Preferably, the locking shaft is also arranged on the first connecting piece, and the locking shaft is positioned behind the rotating shaft;

the two ends of the second resetting piece are respectively abutted against the first connecting piece and the main locking piece.

Preferably, the main locking piece is provided with a hanging shaft, and the first connecting piece is provided with a hook;

the main fuse link is arranged as a fuse link, and hooks or hanging hole structures are arranged at two ends of the fuse link and detachably connected with a hanging shaft on the main locking piece and hooks on the first connecting piece.

Preferably, the limiting mechanism further comprises an auxiliary limiting part, and the auxiliary limiting part is arranged on the support below the rear pipe body.

Preferably, the auxiliary limiting parts are two, and the two auxiliary limiting parts are respectively arranged on two sides of the lower portion of the rear pipe body.

Preferably, the auxiliary limiting part comprises a third connecting part and an auxiliary locking part, an auxiliary connecting shaft is arranged on the third connecting part, and the auxiliary locking part is rotatably connected to the third connecting part through the auxiliary connecting shaft;

the auxiliary connecting shaft is provided with a third resetting piece, and two ends of the third resetting piece are respectively abutted to the auxiliary locking piece and the third connecting piece.

The auxiliary locking piece is connected with the auxiliary fuse piece between the support, the auxiliary fuse piece enables the third reset piece to store energy, and after the auxiliary fuse piece is fused at high temperature, one end of the third reset piece pushes the auxiliary locking piece to lock the valve plate.

Preferably, the first restoring member, the second restoring member and the third restoring member are all provided as torsion springs.

Preferably, the melting point of the main fuse is not higher than 150 ℃, and the melting point of the auxiliary fuse main fuse is not higher than 220 ℃.

The utility model discloses an useful part lies in:

1. the utility model discloses when the unexpected circumstances such as high temperature flue gas or conflagration appear in the public flue, reach the melting point of main fuse-link, main fuse-link can split to make the second of energy storage state reset a release, main retaining member resets at the second and pushes up the valve block under an effect, because the second resets an elasticity big, the valve block can't be opened easily, thereby guaranteed that high temperature flue gas and flame can't get into indoorly, guaranteed user's safety.

2. The utility model discloses stop gear is whole to be detachable construction, only need directly change current fire check valve's stop gear can to lower cost has optimized the security of whole trade.

3. The utility model discloses assist the setting of locating part, further improved holistic security, simple structure moreover, the preparation is convenient.

Drawings

FIG. 1 is an isometric view of a flue check valve;

FIG. 2 is a rear isometric view of a flue check valve;

FIG. 3 is a side view of a flue check valve;

FIG. 4 is a side rear perspective view of a flue check valve;

FIG. 5 is a schematic view from below and from the rear of a flue check valve.

In the figure: the device comprises a perforated connecting plate 1, a front pipe body 2, a support 3, a rear pipe body 4, a first connecting piece 5, a valve plate 6, a second connecting piece 7, a main locking piece 8, a rotating shaft 9, a first resetting piece 10, a locking shaft 11, a second resetting piece 12, a main fuse-link 13, a third connecting piece 14, an auxiliary locking piece 15 and an auxiliary fuse-link 16.

Detailed Description

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 to 5, a flue check valve comprises a valve body and a valve plate 6, wherein a vent is arranged on the valve body, a rotating shaft 9 is arranged above the vent, the valve plate 6 is rotatably arranged on the valve body through the rotating shaft 9 to block the vent, a limiting mechanism is further arranged between the valve plate 6 and the valve body, and the limiting mechanism can control the rotation of the valve plate 6.

The valve body specifically includes foraminiferous connecting plate 1, and foraminiferous connecting plate 1 rear is connected with support 3, establishes respectively to body 2 and back body 4 before foraminiferous connecting plate 1's hole, and 6 shutoff of valve block are on body 4 behind, and pivot 9 and stop gear all are connected on body 4 behind.

The utility model is different from the traditional structure, the limiting mechanism comprises a first reset piece 10 and a main limiting piece, the first reset piece 10 is connected on a rotating shaft 9, two ends of the first reset piece 10 are respectively butted on a valve block 6 and a valve body, the structure is similar to the traditional structure, but the main limiting piece of the utility model comprises a locking shaft 11 and a main locking piece 8, the locking shaft 11 is arranged on the valve body, the main locking piece 8 is connected on the valve body through the locking shaft 11, the locking shaft 11 is connected with a second reset piece 12, two ends of the second reset piece 12 are respectively butted on the main locking piece 8 and the valve body, a main fuse piece 13 is connected between the main locking piece 8 and the valve body, the main fuse piece 13 enables the second reset piece 12 to store energy, one end of the second reset piece 12 pushes the main locking piece 8 to lock the valve block 6 after the main fuse piece 13 is fused at high temperature, the elasticity of the second reset piece 12 is large, the valve plate 6 can not be easily opened, so that high-temperature smoke, flame and the like can not enter the room, and the safety of a user is ensured.

Specifically, 4 tops of back body are connected with first connecting piece 5, and pivot 9 sets up on first connecting

piece

5, and 6 backs of valve block are connected with second connecting piece 7, and valve block 6 rotates through second connecting piece 7 and connects in pivot 9, and the first both ends that reset 10 contradict respectively on second connecting piece 7 and first connecting piece 5, the first piece 10 that resets is established to torsion spring.

The utility model discloses locking shaft 11 also sets up on first connecting piece 5, locking shaft 11 is located pivot 9 rear, the second resets and contradicts respectively on first connecting piece 5 and main retaining member 8 in 12 both ends, be equipped with the peg on the main retaining member 8, be equipped with the couple on the first connecting piece 5, main fuse-link 13 is established to the fuse-link, the fuse-link both ends are equipped with the couple or the peg on couple or the hanging hole structure and the main retaining member 8 and can dismantle the connection to the couple on the first connecting piece 5 to make things convenient for the installation of reality. Through above-mentioned structure can see that whole be detachable construction, only need directly change current fire prevention check valve's stop gear can to the security of whole trade has been optimized with lower cost.

The utility model discloses stop gear is still including assisting the locating part, assists the locating part setting on support 3 in rear body 4 below, assists the locating part preferred to be equipped with two, and two are assisted the locating part and set up respectively in rear body 4 below both sides. The auxiliary limiting part specifically comprises a third connecting part 14 and an auxiliary locking part 15, an auxiliary connecting shaft is arranged on the third connecting part 14, the auxiliary locking part 15 is connected to the third connecting part 14 through rotation of the auxiliary connecting shaft, a third resetting part is arranged on the auxiliary connecting shaft, two ends of the third resetting part are respectively abutted to the auxiliary locking part 15 and the third connecting part 14, an auxiliary fuse part 16 is connected between the auxiliary locking part 15 and the support 3, the auxiliary fuse part 16 enables the third resetting part to store energy, and one end of the third resetting part pushes the auxiliary locking part 15 to lock the valve plate 6 after the auxiliary fuse part 16 is fused at high temperature. The utility model discloses assist the setting of locating part, further improved holistic security, simple structure moreover, the preparation is convenient.

The melting point of the main fuse-link 13 is not higher than 150 ℃, the melting point of the auxiliary fuse-link 16 of the main fuse-link 13 is not higher than 220 ℃, and the safety of the whole flue check valve in the industry is finally improved through a double-layer protection structure.

It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes, modifications and/or alterations to the present invention may be made by those skilled in the art after reading the technical disclosure of the present invention, and all such equivalents may fall within the scope of the present invention as defined by the appended claims.

Claims

1. A flue check valve is characterized by comprising a valve body and a valve plate, wherein a vent is arranged on the valve body, a rotating shaft is arranged above the vent, the valve plate is rotatably arranged on the valve body through the rotating shaft to block the vent, and a limiting mechanism is arranged between the valve plate and the valve body and can control the valve plate to rotate;

2. The flue check valve of claim 1, wherein the valve body comprises a perforated connecting plate, a bracket is connected to the rear of the perforated connecting plate, and the front and rear of the hole of the perforated connecting plate are respectively provided with a front pipe body and a rear pipe body;

3. The flue check valve as claimed in claim 2, wherein a first connecting member is connected to the upper side of the rear pipe body, and the rotating shaft is disposed on the first connecting member;

4. The flue check valve of claim 3 wherein the locking shaft is also disposed on the first connector, the locking shaft being located behind the pivot shaft;

and two ends of the second resetting piece respectively abut against the first connecting piece and the main locking piece.

5. The flue check valve as claimed in claim 3, wherein the main lock member is provided with a hanging shaft, and the first connecting member is provided with a hook;

6. The flue check valve of claim 2, wherein the limiting mechanism further comprises an auxiliary limiting member disposed on the bracket below the rear pipe body.

7. The flue check valve of claim 6, wherein there are two of the auxiliary stoppers, and the two auxiliary stoppers are respectively disposed at two sides below the rear pipe body.

8. The flue check valve as claimed in claim 6, wherein the auxiliary limiting member comprises a third connecting member and an auxiliary locking member, the third connecting member is provided with an auxiliary connecting shaft, and the auxiliary locking member is rotatably connected to the third connecting member through the auxiliary connecting shaft;

a third resetting piece is arranged on the auxiliary connecting shaft, and two ends of the third resetting piece respectively abut against the auxiliary locking piece and the third connecting piece;

assist the retaining member with be connected with between the support and assist the fuse-link, assist the fuse-link and make the third piece energy storage that resets, assist the fuse-link high temperature after the fuse-link high temperature fuses third piece one end that resets promotes assist retaining member lock valve block.

9. The flue check valve of claim 8, wherein the first return member, the second return member, and the third return member are each configured as a torsion spring.

10. The flue check valve of claim 8 wherein the main fuse has a melting point of no more than 150 ℃ and the auxiliary fuse main fuse has a melting point of no more than 220 ℃.