CN210890244U

CN210890244U - Double-door safety fire-proof type oil smoke exhaust check valve

Info

Publication number: CN210890244U
Application number: CN201921529439.8U
Authority: CN
Inventors: 李鼎宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-06-30
Anticipated expiration: 2029-09-16

Abstract

The utility model provides a two safe fire prevention formula oil extraction cigarette check valves that open door has solved current two problem that can not automatic shutting of oil extraction cigarette check valves that open door when taking place high temperature conflagration, and technical scheme is: be provided with the double open valve to the slope of valve body cigarette inlet port through sealed frame in the valve body, the valve has two valve plates through the hinge setting at sealed frame middle part, and valve body cigarette outlet port inner wall is provided with blocking device, and blocking device is: the double-metal limiting rods capable of transversely rotating are symmetrically arranged on the locking support, the two metal limiting rods are longitudinally fixed side by utilizing the high-temperature fusing sheet sleeves, the rear portions of the metal limiting rods are connected with torsional springs used for transversely and elastically twisting the metal limiting rods to close the valve plate, and the torsional springs are fixed on the locking support. The two valve plates can be automatically closed under the high-temperature state of fire, smoke circulation of channels on two sides of the valve body is effectively isolated, the structure is simple, and the installation is easy.

Description

Double-door safety fire-proof type oil smoke exhaust check valve

Technical Field

The utility model relates to a kitchen flue oil extraction cigarette check valve, especially a safe fire prevention formula oil extraction cigarette check valve are applicable to kitchen shared flue and indoor oil extraction cigarette pipeline intercommunication mouth.

Background

At present, the oil smoke discharge outlet of each household kitchen of building residents is a shared smoke discharge channel which is communicated from top to bottom, in order to prevent the smell of the smoke from returning, oil smoke discharge check valves are installed at the oil smoke discharge outlet, the check valves usually adopt double-door-opening type valve plates or single-piece valve plates to play a role of blocking the smoke, the applicant discloses two oil smoke discharge check valves of double-open type valves in patent documents with the publication numbers of CN204512551U and CN205331517U, the basic structure of the oil smoke discharge check valves comprises a cylindrical valve body, two semicircular symmetrically-arranged valve plates which are inclined towards the flue inlet are arranged in the valve body through a sealing frame, sealing rubber strips are arranged at the installation edge of the valve body, and a plurality of quick-installation torsion springs are uniformly distributed and arranged. Its valve through setting up seals the flue, but when the conflagration took place for any one side of flue both sides, the unable self-closing of valve plate formed the passageway of crossing a fire, easily arouses the conflagration to stretch, simultaneously according to the requirement of national construction ministry of academic or vocational study: the flue check valve should have a fire blocking function. Therefore, the safety hazard of the oil fume exhaust check valve still exists.

Disclosure of Invention

The utility model aims at providing a two safe fire prevention formula oil extraction cigarette check valves that open door has solved current two problem that can not automatic shutting of oil extraction cigarette check valves that open door when taking place the high temperature conflagration, and it can be automatic closing valve plate under the high temperature state that takes place the conflagration, effectively completely cuts off valve body both sides passageway flue gas circulation, simple structure, easily installation.

The technical scheme of the utility model is that: this two fire prevention formula oil extraction cigarette check valves that open door safety includes cylindrical valve body, is provided with the two open type valves that advance the slope of cigarette port to the valve body through the seal frame in the valve body, and the valve has the valve plate that sets up at the two semicircle type symmetries at seal frame middle part through the hinge setting, is provided with a plurality of torsional springs of installing fast at valve body installation limit equipartition, and the technical essential is: a locking device is arranged on the inner wall of the smoke outlet of the valve body;

the locking device is as follows: two locking supports are symmetrically arranged on the inner wall of the valve body, which is close to the smoke outlet end of the valve body and corresponds to the hinge shafts of the two valve plates, metal limiting rods capable of transversely rotating are symmetrically arranged on the locking supports, the front sections of the two metal limiting rods are longitudinally fixed side by utilizing high-temperature fusing sheet sleeves sleeved on the front sections of the two metal limiting rods and used for limiting the torsion of the two metal limiting rods, the bent front ends of the metal limiting rods are close to the hinge shafts, the rear parts of the metal limiting rods are connected with torsional springs used for transversely and elastically twisting the metal limiting rods to close the valve. And rubber gaskets are arranged on the inner side surfaces of the two valve plates facing the sealing frame.

The valve body is a metal valve body.

The utility model has the advantages and beneficial effects that: the double-opening valve is characterized in that the fusing safety device is arranged in the valve body of the double-opening valve, the fusing safety device adopts the double-metal limiting rod, the bottom of the double-metal limiting rod is provided with the torsion spring, the transverse elastic torsion metal limiting rod can close the valve plate, and the double-metal limiting rod is sleeved with the high-temperature fusing sheet sleeve for limiting the torsion of the two metal limiting rods. Therefore, during normal use state, bimetal gag lever post is restricted by high temperature fusing piece cover at the initial position, do not influence the switch of valve plate, when the conflagration breaing out, high temperature fusing separation blade cover fuses under high heat high temperature state, lose the effect of restricting bimetal gag lever post, bimetal gag lever post is driven down at the torsion of torsional spring after being released, the suppression valve plate is forced to be closed, block logical cigarette passageway, thereby it flees into indoorly to play and prevent the naked light, reach the effect of safe fire prevention, it still has the switch flexibility, it is sealed tightly, characteristics such as simple to operate.

Drawings

The present invention will be further explained with reference to the accompanying drawings.

FIG. 1 is a schematic view of a smoke outlet end according to an embodiment of the present invention;

FIG. 2 is a longitudinal cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of the locking device of the present invention;

FIG. 4 is a side view of FIG. 3;

fig. 5 is a schematic view of the locking device of the present invention in use.

The sequence numbers in the figures illustrate: 1 valve body, 2 sealing frame, 3 valve plates, 4 hinge shafts, 5 quick installation torsional springs, 6 blocking devices, 7 metal limiting rods, 8 high-temperature fusing sheet sleeves, 9 blocking supports, 10 torsional springs, 11 smoke outlet ports and 12 smoke inlet ports.

Detailed Description

Detailed description of the present invention with reference to fig. 1-5, embodiments of which are shown in fig. 1 and 2, a double door safety fire-proof type fume exhaust check valve, it comprises a cylindrical valve body 1, a valve core of the valve body is provided with a sealing frame 2, the sealing frame is a cylindrical frame arranged on the inner wall of the valve body, the edge of the sealing frame can be provided with a sealing rubber ring, it installs torsional spring 5 fast to go out cigarette port 11 at the valve body, be provided with the double open valve that advances cigarette port 12 slope to the valve body through sealed frame, the valve has valve plate 3 that two semicircle types symmetry set up, the valve middle part is provided with two vertical valve bodies and advances the hinge 4 of cigarette port slope, inclination can be for 10 degrees to 30 degrees, the valve plate passes through the hinge setting at sealed frame middle part, the medial surface of two valve plates 3 towards sealed frame can be provided with rubber gasket 8, rubber gasket 8 has the semi-circular portion and the middle connecting portion of the both sides that correspond with the valve plate.

The inner wall of the smoke outlet of the valve body is provided with a locking device 6. The locking device 6 is characterized in that two locking supports 9 are symmetrically arranged on the inner wall of the valve body, close to the smoke outlet end of the valve body and corresponding to the hinge shafts of the two valve plates, metal limiting rods 7 capable of transversely rotating are symmetrically arranged on the locking supports, and the lower portions of the metal limiting rods are rotatably connected with the locking supports and can transversely rotate to form the double-metal limiting rods. The front sections of the two metal limiting rods are sleeved with high-temperature fusing sheet sleeves 8 which are longitudinally fixed side by side, the high-temperature fusing sheet sleeves are used for limiting the torsion of the two metal limiting rods, the bent front ends of the metal limiting rods 7 are abutted to the hinge shaft, the rear parts of the metal limiting rods 7 are connected with torsion springs 10 which are used for transversely and elastically twisting the metal limiting rods, the metal limiting rods are utilized to close the valve plate 3, and the torsion springs are fixed on the locking support 9.

During normal use state, bimetal gag lever post is restricted by high temperature fusing piece cover at the initial position, do not influence the switch of valve plate, as shown in figure 5, when the conflagration breaing out, high temperature fusing separation blade cover fuses under high heat high temperature state, lose the effect of restricting bimetal gag lever post, bimetal gag lever post is driven at the torsion of torsional spring after being released, open to both sides, the suppression valve plate is forced to be closed, be in and can not open the state, block logical cigarette passageway, thereby play and prevent that naked light from scurrying into indoorly, reach the effect of safe fire prevention, it still has the switch flexibility, it is sealed tight, characteristics such as simple to operate.

As further improvement, the inner side surfaces, facing the sealing frame, of the two valve plates are provided with rubber gaskets, and the sealing effect in a closed state is improved. The valve body and the valve plate can be made of metal parts, preferably stainless steel parts, by a stainless steel stamping and stretching process, and have the advantages of high temperature resistance, corrosion resistance, long service life and the like.

In conclusion, the purpose of the utility model is realized.

Claims

1. The utility model provides a two safe fire prevention formula oil extraction cigarette check valves that open door, it includes drum type valve body, is provided with the two open type valves that advance the slope of cigarette port to the valve body through the seal frame in the valve body, and the valve has the valve plate that sets up at the two semicircle types symmetries at seal frame middle part through the hinge setting, is provided with a plurality of installation torsional springs fast, its characterized in that at valve body installation limit equipartition: a locking device is arranged on the inner wall of the smoke outlet of the valve body;

the locking device is as follows: two locking supports are symmetrically arranged on the inner wall of the valve body, which is close to the smoke outlet end of the valve body and corresponds to the hinge shafts of the two valve plates, metal limiting rods capable of transversely rotating are symmetrically arranged on the locking supports, the front sections of the two metal limiting rods are longitudinally fixed side by utilizing high-temperature fusing sheet sleeves sleeved on the front sections of the two metal limiting rods and used for limiting the torsion of the two metal limiting rods, the bent front ends of the metal limiting rods are close to the hinge shafts, the rear parts of the metal limiting rods are connected with torsional springs used for transversely and elastically twisting the metal limiting rods to close the valve.

2. The double door safety fire-proof type range hood check valve of claim 1, wherein: and rubber gaskets are arranged on the inner side surfaces of the two valve plates facing the sealing frame.

3. A double door safety fire-proof type oil smoke exhaust check valve according to claim 1 or 2, wherein: the valve body and the valve plate are metal parts.

4. A double door safety fire-proof type oil smoke exhaust check valve according to claim 3, wherein: the valve body and the valve plate are stainless steel parts.