CN210687151U

CN210687151U - Oil smoke discharging fireproof check valve with front and back double control

Info

Publication number: CN210687151U
Application number: CN201921859882.1U
Authority: CN
Inventors: 陈开兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-06-05
Anticipated expiration: 2029-10-31

Abstract

The utility model provides a front and back double-control oil smoke discharging fireproof check valve, which comprises a valve body and a temperature control locking device, wherein the temperature control locking device comprises a locking mechanism and a triggering mechanism, the locking mechanism comprises a mounting seat, a pressing fastener, a first pin shaft, a second pin shaft and a locking double torsional spring, and the triggering mechanism comprises a supporting piece, a blocking piece, a pressing control piece, a first fuse link, a second fuse link and a connecting rod; under the normal use state, the locking double torsion spring is in a torsion state, and the gear part is pressed on the pressing fastener; when the temperature in the shared air duct or the user room reaches a preset value, the first fuse link or the second fuse link is fused, and the pressing and buckling piece rotates under the action of the reset force of the locking double torsion springs and presses the valve plate, so that the valve plate is in a locking and closing state. Above-mentioned check valve has avoided when the user's indoor conflagration breaks out, because of the unable rapid heating up of first fuse link makes the condition that the valve block continues to open, has effectively cut off the intercommunication passageway in sharing wind channel and the user's room, prevents to spread each other when the conflagration breaks out.

Description

Oil smoke discharging fireproof check valve with front and back double control

Technical Field

The utility model belongs to the technical field of house exhaust passage check valve, concretely relates to oil extraction gas fire prevention check valve of two accuses around.

Background

The oil smoke exhausting fireproof check valve is usually installed at the rear end of a kitchen range hood or a toilet exhaust fan to the inlet of a common exhaust pipeline with fire resistance grade, the fan is in an opening state (exhausting waste gas) during working, the fan is in a natural closing state (preventing waste gas from flowing back) during non-working, the temperature in a room or a common air channel reaches a preset value and can be automatically closed, the requirement on fire resistance is met within a specified time, and the valve plays a role in isolating smoke and fire resistance.

The oil smoke fire-proof check valve used in the prior art generally comprises an exhaust funnel and a valve plate, wherein the valve plate is rotatably arranged on an air outlet of the exhaust funnel by using a pin shaft, and when the range hood is not used, the valve plate is in a closed state due to self gravity and covers the air outlet; when the lampblack absorber uses, the valve block is opened and forms the flue by the oil smoke impact force, has following defect in this check valve use: 1. the installation position is limited, and the air conditioner can only be installed above the air outlet and cannot be horizontally installed or installed below the air outlet; 2. there is the potential safety hazard, in case any one family takes place the conflagration, a large amount of high temperature harmful gas gushes into public flue gas channel, if can not in time close the valve block that the valve was stopped back in the shared wind channel this moment, these a large amount of high temperature harmful gas can get into in the user family who is using the lampblack absorber on the oil smoke circulation direction through the interface that admits air of flue check valve, threatens resident family's life safety.

Therefore, the applicant discloses a fire-proof check valve for oil smoke emission (with the application number of CN2019104360441), which comprises a valve body and a main check mechanism, wherein the valve body comprises a valve seat, an exhaust cylinder and a valve plate which is opened and closed along with the impact force of oil smoke in the exhaust cylinder; the main check mechanism comprises a mounting seat, a supporting piece, a pressing control piece, a first fuse piece, a pressing fastener, a gear piece and a first locking execution torsion spring; under the normal use state, the first locking execution torsion spring is in a torsion state, and the gear piece is pressed on the pressing fastener; when the temperature in a user room or a shared air duct reaches a preset value, the first fusing part is heated and fused, and the pressing and buckling part is rotated by the reset acting force of the first locking execution torsion spring and pressed on the valve plate. The oil smoke discharging fireproof check valve solves the problem that a check mechanism cannot be completely buckled on a valve plate, improves the sealing property between the valve plate and an exhaust pipe after a first fuse element is fused, effectively cuts off a communication channel between a shared air duct and a user room, and prevents mutual spread when a fire disaster occurs.

However, the patent product has the following problems when in use: when the user meets an accident fire in a room, the first fuse link is not easy to be rapidly heated due to the fact that the first fuse link is located on the air outlet side of the valve plate, so that the first fuse link is fused, the valve plate is easily opened under the action of oil smoke, and the valve plate is mutually spread in the case of fire.

Disclosure of Invention

To the defect among the prior art, the utility model provides a two accuse oil extraction cigarette fire prevention check valves around to the valve block continues to open when preventing near check valve temperature sharply to rise.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a front-back double-control oil smoke discharging fireproof check valve comprises a valve body and a temperature control locking device, wherein the valve body comprises a valve seat, an exhaust funnel penetrating through the valve seat and a valve block which is arranged in the exhaust funnel and can be opened and closed along with the impact force of oil smoke in the exhaust funnel, the temperature control locking device comprises a locking mechanism and a trigger mechanism, the locking mechanism comprises a mounting seat, a pressing fastener, a first pin shaft, a second pin shaft and a locking double torsional spring, the mounting seat comprises a mounting bottom plate fixedly arranged on the inner wall of the end part of the exhaust funnel close to an air outlet and two mounting side plates which are correspondingly connected with the two ends of the mounting bottom plate and are parallel to each other, the first pin shaft and the second pin shaft respectively penetrate through the two mounting side plates, the first pin shaft is arranged close to the axial center line of the exhaust funnel, the second pin shaft is arranged close to the inner side wall of, the two free ends of the locking double torsion spring are abutted against the two ends of the second pin shaft;

the trigger mechanism comprises a support piece, a blocking piece, a pressure control piece, a first fuse link, a second fuse link and a connecting rod, one end of the support piece is fixedly connected with the two mounting side plates, the other end of the support piece is hinged with one end of the pressure control piece, the other end of the pressure control piece is connected with one end of the connecting rod which vertically penetrates through the valve seat through the first fuse link, the other end of the connecting rod is connected with the inner edge of the air inlet of the valve seat through the second fuse link, one end of the blocking piece is connected with the pressure control piece, and the other end of the blocking piece is pressed against the pressure fastener;

under the normal use state, the locking double torsion spring is in a torsion state, and the gear part is pressed on the pressing fastener;

when the temperature in the common air duct or the user room reaches a preset value, the first fuse link or the second fuse link is heated and fused, and the pressing fastener rotates under the action of the reset force of the locking double torsion springs and presses the valve plate, so that the valve plate is in a locking and closing state.

According to the technical scheme, when the front-back double-control oil smoke discharging fireproof check valve provided by the utility model is normally used (namely, the temperature in a user room or a public air duct is lower than the fusing temperature of the first fuse link and the second fuse link), the valve block can freely rotate to open or close under the impact force of oil smoke in the exhaust funnel; when a fire disaster occurs in a user room, the second fuse link is heated and fused, the pressing fastener loses the control of the gear piece and is rotated and pressed on the valve piece by the reset acting force of the locking double torsion springs, so that the valve piece is in a locking state, when a fire disaster occurs in the public flue, the first fuse link is heated and fused, and the pressing fastener loses the control of the gear piece and is rotated and pressed on the valve piece by the reset acting force of the locking double torsion springs, so that the valve piece is in a locking state.

The utility model provides a two oil extraction gas fire prevention check valves of controlling around, when having avoided the user to send out a fire in the room, because of the unable rapid heating up of first fuse link makes the condition that the valve block continues to be opened, effectively cut off the intercommunication passageway in sharing wind channel and the user room, prevent to spread each other when sending out a fire.

The utility model discloses an example, press the buckle piece including two trapezium structures of parallel arrangement's buckle board and respectively with the connecting plate that two buckle board waistlines meet, the narrow end of buckle board articulates on the mount pad through first round pin axle, the wide end of buckle board forms and keeps off the open slot of a fender position piece lock joint with the connecting plate.

The utility model discloses an example, form the breach between the one end that the mount pad was kept away from to the connecting plate and the wide end of pinch plate.

The beneficial effects of adopting the above example are: the notch is formed, so that the pressing fastener is prevented from being in direct contact with the pressure control part, the resistance of the pressing fastener during rotation is reduced, and the pressing fastener can be quickly pressed on the valve plate after the pressing fastener loses the limit of the gear part.

The utility model discloses an example, the aiutage inner wall sets firmly in spacing seat, spacing seat has the through-hole of wearing to establish the connecting rod.

In an example of the present invention, an air inlet protection cover is further installed on the air inlet side of the valve seat.

The utility model discloses an example, the both ends of connecting rod are all crooked formation hook portion, first fuse link have with a hook portion complex hook hole, the second fuse link has the connecting hole, the connecting rod is connected through the bolt and nut fitting piece of wearing to establish hook portion and connecting hole.

The utility model discloses an example still includes the position sensor who is used for detecting the fastener state, position sensor is connected with the terminal control system electricity.

The utility model discloses an example, first fuse link and second fuse link all include two fuses that the welding links to each other.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic perspective view of a fire-proof check valve for oil smoke exhaust with front and back dual control according to an embodiment of the present invention;

FIG. 2 is a front view of the front and rear dual-control smoke exhaust fire check valve shown in FIG. 1;

FIG. 3 is a side view of the dual control front and rear fire check valve for oil smoke exhaust shown in FIG. 1;

FIG. 4 is a schematic perspective view of the thermostatic locking device of FIG. 1;

FIG. 5 is a schematic view of the thermostatic locking device of FIG. 1 in cooperation with a valve seat;

fig. 6 is a partial schematic view of fig. 5.

In the reference symbols:

1. a valve body; 11. a valve seat; 12. an exhaust funnel; 13. a valve plate; 14. an air inlet protective cover; 15. a valve plate control mechanism;

2. a temperature control locking device; 21. a mounting seat; 211. mounting a bottom plate; 212. installing a side plate; 22. pressing a fastener; 221. a buckle plate; 222. a connecting plate; 223. an open slot; 224. a notch; 231. a first pin shaft; 232. a second pin shaft; 24. a locking double torsion spring; 25. a support member; 26. a gear member; 27. pressing a control piece; 281. a first fuse link; 282. a second fuse link; 29. a connecting rod; 291. an extension base; 292. a limiting seat;

3. a position sensor.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

Referring to fig. 1 to 6, the present embodiment provides a front-back dual-control fire-proof check valve for oil smoke exhaust, including a valve body 1 and a temperature control locking device 2, wherein the valve body 1 includes a valve seat 11, an exhaust funnel 12 penetrating through the valve seat 11, and a valve plate 13 disposed in the exhaust funnel 12 and opened and closed along with the impact force of the oil smoke in the exhaust funnel 12.

In this embodiment, the valve plate 13 is opened and closed under the control of the impact force of the valve plate control mechanism 15 and the oil fume, and the specific installation form thereof can be described in a combined flue fire-proof check valve (publication No. CN209084097U) applied by the applicant at 11/6/2018, and therefore, the details thereof are not described herein.

As shown in fig. 4 and fig. 5, the temperature-controlled locking device 2 comprises a locking mechanism and a triggering mechanism, wherein the locking mechanism comprises a mounting seat 21, a pressing and buckling member 22, a first pin 231, a second pin 232 and a locking double torsion spring 24, the mounting base 21 comprises a mounting bottom plate 211 fixedly arranged on the inner wall of the exhaust funnel 12 near the air outlet end and two parallel mounting side plates 212 correspondingly connected with the two ends of the mounting bottom plate 211, the first pin shaft 231 and the second pin shaft 232 respectively penetrate through the two mounting side plates 212, and the first pin shaft 231 is arranged near the axial center line of the exhaust funnel 12, the second pin shaft 232 is arranged near the inner side wall of the exhaust funnel 12, one end of the fastening member 22 is hinged to the two mounting side plates 212 by a first pin 231, the two locking torsion springs 24 are sleeved on two ends of the first pin shaft 231, and two free ends of the two locking torsion springs 24 are abutted against two ends of the second pin shaft 232.

The trigger mechanism comprises a support member 25, a blocking member 26, a pressure control member 27, a first fuse link 281, a second fuse link 282 and a connecting rod 29, wherein one end of the support member 25 is fixedly connected with the two mounting side plates 212, the other end of the support member 25 is hinged with one end of the pressure control member 27, the other end of the pressure control member 27 is connected with one end of the connecting rod 29 vertically penetrating through the valve seat 11 through the first fuse link 281, the other end of the connecting rod 29 is connected with the inner edge of the air inlet of the valve seat 11 through the second fuse link 282, one end of the blocking member 26 is connected with the pressure control member 27, and the other end of the blocking member is pressed against the pressure fastener 22;

in this embodiment, it is preferable that an extension seat 291 is fixed to an inner edge of the air inlet of the valve seat 11, and one end of the second fuse link 282 is connected to the extension seat 291, and the other end is connected to the connecting rod 29, which helps to reduce the usage amount of the second fuse link 282.

In a normal use state, the locking double torsion spring 24 is in a torsion state, and the gear 26 is pressed against the fastener 22;

when the temperature in the common air duct or the user room reaches a preset value, the first fuse link 281 or the second fuse link 282 is heated and fused, and the pressing piece 22 rotates under the action of the reset force of the locking double torsion spring 24 and presses the valve plate 13, so that the valve plate 13 is in a locking and closing state.

In this embodiment, it should be noted that the locking mechanism is consistent with a structure of a fire-proof check valve for fume exhaust (application No. CN2019104360441) applied by the applicant in 2019, 5/23, and therefore, no further description is provided herein.

As shown in fig. 3, an air inlet protective cover 14 is further provided on the air inlet side of the valve seat 11 to reduce the adhesion of impurities such as oil stains to the second fuse piece 282.

As shown in fig. 4, the inner wall of the exhaust funnel 12 is fixedly disposed on a limiting seat 292, the limiting seat 292 has a through hole penetrating through the connecting rod 29, and the limiting seat 292 is disposed to prevent the connecting rod 29 from tilting to interfere with the normal closing of the valve plate 13 when the first fuse segment 281 and the second fuse segment 282 are fused.

As shown in fig. 4, both ends of the connecting rod 29 are bent to form hook portions, the first fuse tab 281 has a hook hole engaged with a hook portion, the second fuse tab 282 has a connection hole, the connecting rod 29 is connected with a bolt-nut fitting member passing through the hook portions and the connection hole, and the connecting rod 29 having the hook portions at both ends thereof can be conveniently connected with the first fuse tab 281 and the second fuse tab 282.

In the present embodiment, the first fuse link 281 and the second fuse link 282 each include two fuse links welded together.

As shown in fig. 6, the fastening member 22 includes two fastening plates 221 and a connecting plate 222, the two fastening plates 221 are both in a trapezoidal structure and are arranged in parallel, two side edges of the connecting plate 222 are respectively connected with a waist line of the two fastening plates 221 to form an integrated structure, a narrow end of the fastening plate 221 is hinged on the mounting seat 21, a wide end of the fastening plate 221 and the connecting plate 222 form an open slot 223 fastened with the gear member 26, and a gap 224 is formed between one end of the connecting plate 222 far away from the mounting seat 21 and the wide end of the fastening plate 221.

In the embodiment, the notch 224 is formed to prevent the pressing member 22 from directly contacting the pressure-controlling member 27, so as to reduce the resistance of the pressing member 22 during rotation, so that the pressing member 22 can be quickly pressed on the valve plate 13 after the pressing member 22 loses the restriction of the stopper 26.

As shown in fig. 3, the position sensor 30 is further included for detecting the state of the press fastener 22, the position sensor 30 is electrically connected to the terminal control system, the position sensor 30 is further connected to the supporting member 25 and the press fastener 22, when the press fastener 22 is separated from the blocking member 26, the press fastener 22 is reset by the locking double torsion spring 24 and is rapidly pressed on the valve plate 13, and at this time, the position sensor 30 is disconnected from the press fastener 22 and gives an alarm.

In this embodiment, the position sensor 30 may be electrically connected to an in-home alarm, which alarms when the position sensor 30 detects that the snap member 22 is out of the limit of the stop member 26, so as to inform the home user that the state of the check valve is changed.

In the embodiment, the structure of the valve seat 11 is the same as that of the valve seat 11 in a combined flue fire-proof check valve (publication number: CN209084097U) applied by the applicant in 2018, 11 and 6, and therefore, the description thereof is omitted.

When the front and back double-control smoke exhaust fireproof check valve provided by the embodiment is used, the valve seat 11 is arranged at the inlet from the rear end of a kitchen range hood or a toilet exhaust fan to a common exhaust pipeline through the positioning spring clamps at the two sides of the valve seat. Under the normal use state, the temperature control locking device 2 is in the non-working state, namely the locking double torsion spring 24 is in the torsion state, the blocking piece 26 is pressed against the pressing fastener 22, and the valve plate 13 is opened and closed by the impact of oil smoke in the exhaust funnel 12, so as to form a one-way oil smoke exhaust channel; when a fire disaster happens in a user room, the second fuse link 282 is heated and fused, the pressing and buckling piece 22 loses the control of the stop piece 26 and rotates under the action of the reset force of the locking double torsion spring 24 and presses the valve plate 13, so that the valve plate 13 is in a locking state; when a fire breaks out in the public flue, the first fuse link 281 is heated and fused, the press fastener 22 loses the control of the stop piece 26 and is rotated and pressed on the valve plate 13 by the reset acting force of the locking double torsion spring 24, so that the valve plate 13 is in a locking state, oil smoke on two sides of the valve plate 13 cannot circulate, the tightness between the valve plate 13 and the exhaust funnel 12 is improved when the air temperature in a user room or a shared air channel reaches a preset value, the communication channel between the shared air channel and the user room is effectively cut off, and the mutual spread is prevented when the fire breaks out.

In the present embodiment, it should be explained that the preset value is higher than or equal to the fusing temperatures of the first fuse link 281 and the second fuse link 282, and the fusing temperatures of the first fuse link 281 and the second fuse link 282 are the temperatures specified by the national relevant regulations, that is, the first fuse link 281 and the second fuse link 282 are fused at a temperature of 156 ° ± 2 °.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. A front-back double-control oil smoke discharging fireproof check valve comprises a valve body (1) and a temperature control locking device (2), wherein the valve body (1) comprises a valve seat (11), an exhaust funnel (12) penetrating through the valve seat (11) and a valve plate (13) which is arranged in the exhaust funnel (12) and is opened and closed along with the impact force of oil smoke in the exhaust funnel (12), the temperature control locking device (2) comprises a locking mechanism and a triggering mechanism, the locking mechanism comprises a mounting seat (21), a pressing and buckling piece (22), a first pin shaft (231), a second pin shaft (232) and a locking double torsion spring (24), the mounting seat (21) comprises a mounting base plate (211) fixedly arranged on the inner wall of the end part of an air outlet of the exhaust funnel (12) and two mounting side plates (212) which are correspondingly connected with the two ends of the mounting base plate (211) and are parallel to each other, the first pin shaft (231) and the second pin shaft (232) respectively penetrate through the, the first pin shaft (231) is arranged close to the axial center line of the exhaust funnel (12), the second pin shaft (232) is arranged close to the inner side wall of the exhaust funnel (12), one end of the pressing fastener (22) is hinged with the two mounting side plates (212) through the first pin shaft (231), the locking double torsion spring (24) is sleeved at two ends of the first pin shaft (231), and two free ends of the locking double torsion spring (24) are abutted against two ends of the second pin shaft (232); the method is characterized in that:

the trigger mechanism comprises a support piece (25), a blocking piece (26), a pressure control piece (27), a first fuse link (281), a second fuse link (282) and a connecting rod (29), one end of the support piece (25) is fixedly connected with two mounting side plates (212), the other end of the support piece (25) is hinged with one end of the pressure control piece (27), the other end of the pressure control piece (27) is connected with one end of the connecting rod (29) which vertically penetrates through the valve seat (11) through the first fuse link (281), the other end of the connecting rod (29) is connected with the inner edge of an air inlet of the valve seat (11) through the second fuse link (282), one end of the blocking piece (26) is connected with the pressure control piece (27), and the other end of the blocking piece is pressed on the pressure fastener (22);

under the normal use state, the locking double torsion spring (24) is in a torsion state, and the stop piece (26) is pressed against the pressing fastener (22);

when the temperature in the common air duct or the user room reaches a preset value, the first fuse link (281) or the second fuse link (282) is heated and fused, and the pressing fastener (22) rotates under the reset action force of the locking double torsion spring (24) and is pressed on the valve plate (13), so that the valve plate (13) is in a locking and closing state.

2. The fire-proof check valve for oil smoke exhaust with double control of front and back as claimed in claim 1, wherein: press fastener (22) including two trapezium structure's of parallel arrangement buckle board (221) and respectively with two connecting plate (222) that press buckle board (221) waistline to meet, the narrow end of buckle board (221) articulates on mount pad (21) through first round pin axle (231), the wide end and connecting plate (222) of buckle board (221) form open slot (223) with fender position spare (26) lock joint.

3. The fire-proof check valve for oil smoke exhaust with double control of front and back as claimed in claim 2, wherein: a gap (224) is formed between one end of the connecting plate (222) far away from the mounting seat (21) and the wide end of the pinch plate (221).

4. The fire-proof check valve for oil smoke exhaust with double control of front and back as claimed in claim 2, wherein: the inner wall of the exhaust funnel (12) is fixedly arranged on a limiting seat (292), and the limiting seat (292) is provided with a through hole penetrating through the connecting rod (29).

5. The front-back double-control oil smoke discharging fireproof check valve according to claim 4, characterized in that: and an air inlet protective cover (14) is also arranged on the air inlet side of the valve seat (11).

6. The fire-proof check valve for oil smoke exhaust with double control of front and back as claimed in claim 2, wherein: the both ends of connecting rod (29) are all crooked formation hook portion, first fuse link (281) have with a hook portion complex hook hole, second fuse link (282) have the connecting hole, connecting rod (29) are connected through the bolt and nut fitting piece of wearing to establish hook portion and connecting hole.

7. The fire-proof check valve for oil smoke exhaust with double control of front and back as claimed in claim 1, wherein: the device also comprises a position sensor (3) for detecting the state of the pressure fastener (22), wherein the position sensor (3) is electrically connected with a terminal control system.

8. The fire-proof check valve for oil smoke exhaust with double control of front and back as claimed in claim 1, wherein: the first fuse link (281) and the second fuse link (282) each include two fuse links that are welded together.