CN217272126U

CN217272126U - Non-return fire-proof valve

Info

Publication number: CN217272126U
Application number: CN202123127119.XU
Authority: CN
Inventors: 张国高
Original assignee: Dongguan Accor Ventilation Equipment Manufacturing Co ltd
Current assignee: Dongguan Accor Ventilation Equipment Manufacturing Co ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-08-23
Anticipated expiration: 2031-12-13

Abstract

The utility model relates to a fire prevention valve technical field, concretely relates to non return fire prevention valve. The check fireproof valve comprises a shell, a fireproof assembly and a check assembly; the housing comprises a base plate and a cover; the middle part of the bottom plate is provided with an opening, and the periphery of the bottom plate is provided with a plurality of mounting holes; the outer cover is fixedly connected to the bottom plate through a clamping mechanism and is of a hollow structure, one end of the outer cover is communicated with the opening, and a hollow pipeline is arranged at the other end of the outer cover; the fireproof assembly comprises a fireproof valve body and a fireproof valve plate; the fireproof valve body is fixedly connected with the outer cover, and an air hole is formed in the middle of the fireproof valve body; the fireproof valve plate is hinged to the fireproof valve body, a fuse link is fixedly connected to the fireproof valve body, and when the fuse link is fused, the fireproof valve plate covers the air hole; an alarm is also arranged on the fireproof valve body; the check assembly is arranged in the hollow pipeline. The utility model provides a current fire prevention valve structure complicated, lead to the maintenance, change the inconvenient problem of fuse-link.

Description

Non-return fireproof valve

Technical Field

The utility model relates to a fire prevention valve technical field, concretely relates to non return fire prevention valve.

Background

The existing building is provided with a common exhaust duct, each layer of kitchen and toilet is communicated with the common exhaust duct respectively, for preventing foul air in the common exhaust duct from recharging, each kitchen and toilet are provided with check valves between the common exhaust duct, and meanwhile, in order to prevent other floors from causing fire, smoke and fire in the common exhaust duct are poured into the room, national standards also require that a fire valve is arranged at the part, when other rooms cause fire, the valve is automatically closed, and the fire is prevented from spreading. The existing fire damper has a complex structure and is inconvenient in valve body installation, fuse link replacement and the like.

Therefore, it is necessary to provide a technical solution to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a non return fire prevention valve aims at solving current fire prevention valve structure complicacy, all has certain inconvenient problem in the aspect of valve body installation and fuse-link change etc..

In order to achieve the above object, the utility model provides a non-return fire prevention valve, including shell, fire prevention subassembly and non-return subassembly, wherein:

the housing comprises a base plate and a cover; the middle part of the bottom plate is provided with an opening, and the periphery of the bottom plate is provided with a plurality of mounting holes; the outer cover is fixedly connected to the bottom plate through a clamping mechanism and is of a hollow structure, one end of the outer cover is communicated with the opening, and a hollow pipeline extends out of the other end of the outer cover;

the fireproof assembly is arranged inside the outer cover and comprises a fireproof valve body and a fireproof valve plate; the fireproof valve body is fixedly connected with the outer cover, and the middle part of the fireproof valve body is provided with an air hole communicated with the hollow pipeline; the fireproof valve plate is hinged to the fireproof valve body, a fuse link used for limiting the movement of the fireproof valve plate is fixedly connected to the fireproof valve body, and when the fuse link is fused, the fireproof valve plate covers the air hole; the fire-proof valve body is also provided with an alarm for reminding the closing of the fire-proof valve plate;

the non-return assembly is arranged in the hollow pipeline and is used for preventing oil smoke from flowing back.

More specifically, the clamping mechanism comprises a plurality of clamping rods and a plurality of clamping blocks; the clamping rods are rotatably connected to the bottom plate; the clamping blocks are fixedly connected to one side, far away from the bottom plate, of the outer cover, clamping holes matched with the clamping rods are formed in the middle of the clamping blocks, and embedding holes communicated with the clamping holes are formed in the side walls of the clamping blocks, far away from the clamping rods.

More specifically, the bottom plate is provided with a recess for positioning the housing.

More specifically, fixedly connected with stationary blade on the fire prevention valve body, fuse-link one end fixed connection be in on the stationary blade, other end bending type becomes spacing portion and supports and leans on the fire prevention valve block is close to on the one side of gas pocket.

More specifically, a bolt is fixedly connected to the fixing sheet; one side of the fixing piece, which is close to the fireproof valve plate, is provided with a limiting support, and one end of the limiting support is rotatably connected to the bolt; a torsion spring is arranged outside the bolt, a first force application end of the torsion spring is arranged on the fixing piece, and a second force application end of the torsion spring is arranged on the limiting support.

More specifically, the alarm is provided with a control switch, and the fireproof valve plate is fixedly connected with a control sheet; when the fireproof valve plate covers the air hole, the control plate just presses the control switch.

More specifically, an elastic flame-retardant sealing ring is arranged in the air hole, and when the fireproof valve plate is covered, the fireproof valve plate is contacted with the elastic flame-retardant sealing ring in a sticking way.

More specifically, the fire prevention valve body is provided with a reinforcing part made of a magnetic material at the outer edge of the air hole.

More specifically, the check assembly comprises a rotating shaft, a baffle and a limiting plate; the rotating shaft is rotatably connected to the hollow pipe body; the baffle is provided with an installation block, the installation block is provided with an installation hole matched with the rotating shaft, and the rotating shaft is rotatably connected with the installation hole; the limiting plate is arranged on one side, away from the fireproof valve body, of the baffle and is fixedly connected in the hollow pipe body; when the baffle receives the thrust input by gas pocket one side, the baffle with the limiting plate pastes and touches, and just in time the shutoff the cavity body.

The utility model relates to a technical effect of non return fire prevention valve does:

this application locates integrative fire prevention valve and check valve through the shell, and the shell adopts the design of bottom plate and dustcoat, the staff only needs to install the bottom plate in the exhaust airway, the installation of this non return fire prevention valve can be accomplished on rethread clamping mechanism with dustcoat joint and the bottom plate, it is more convenient in the installation, and the maintenance of follow-up fire prevention valve, during operation such as the change of fuse-link is torn open the dustcoat alone and can be gone on, it is convenient for the staff to provide, secondly, through the setting of alarm, when the conflagration does not appear and the unusual lid of fire prevention valve block, the alarm then can start, in time, remind the user, avoid there being the potential safety hazard.

Drawings

Fig. 1 is a schematic structural view of a non-return fire-proof valve according to the present invention;

fig. 2 is a schematic structural view of another view angle of the non-return fire-proof valve according to the present invention;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

fig. 4 is a schematic structural view of a middle bottom plate of a non-return fire-proof valve according to the present invention;

fig. 5 is a schematic structural view of a fire-proof assembly fire-proof valve in an open state in the non-return fire-proof valve according to the present invention;

fig. 6 is a schematic structural view of a fire-proof assembly fire-proof valve in a non-return fire-proof valve according to the present invention in a closed state;

fig. 7 is a partial schematic view of a fire protection assembly in a non-return fire protection valve according to the present invention.

The labels in the figure are:

1-a housing; 2-a fire protection assembly; 3-a non-return assembly;

11-a base plate; 111-opening; 112-mounting holes; 113-a recess; 12-a housing; 121-hollow conduit; 13-a clamping mechanism; 131-clamping rod; 132-a fixture block; 133-hole clamping; 134-an insertion hole;

201-fire-proof valve body; 202-fireproof valve plate; 203-air holes; 204-fuse link; 205-alarm; 206-a fixing piece; 207-bolt; 208-a limit bracket; 209-torsion spring; 210-a control switch; 211-control sheet;

301-a rotating shaft; 302-a baffle; 303-limiting plate; 304-a mounting block;

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the embodiments of the present invention, it should be understood that the directions or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the embodiments of the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

In order to more clearly illustrate the technical solution of the present invention, a preferred embodiment is provided below. With particular reference to fig. 1-7. The utility model provides a non return fire prevention valve, includes shell 1, fire prevention subassembly 2 and non return subassembly 3, wherein:

the housing 1 comprises a base plate 11 and a cover 12; the middle part of the bottom plate 11 is provided with an opening 111, and the periphery of the bottom plate is provided with a plurality of mounting holes 112; the outer cover 12 is fixedly connected to the bottom plate 11 through a clamping mechanism 13, is of a hollow structure, and has one end communicated with the opening 111 and the other end extended with a hollow pipeline 121;

the fire-proof assembly 2 is arranged inside the outer cover 12 and comprises a fire-proof valve body 201 and a fire-proof valve plate 202; the fireproof valve body 201 is fixedly connected with the outer cover 12, and the middle part of the fireproof valve body is provided with an air hole 203 communicated with the hollow pipeline 121; the fireproof valve plate 202 is hinged to the fireproof valve body 201, a fuse link 204 used for limiting the movement of the fireproof valve plate 202 is fixedly connected to the fireproof valve body 201, and when the fuse link 204 is melted, the fireproof valve plate 202 covers the air hole 203; the fire-proof valve body 201 is also provided with an alarm 205 for reminding the closing of the fire-proof valve plate 202;

the check assembly 3 is disposed in the hollow pipe 121 and is used for preventing oil smoke from flowing back.

In this embodiment, adopt shell 1 will the fire prevention valve with the check valve is located integratively, and shell 1 adopts bottom plate 11 with the design of dustcoat 12, the staff only need with bottom plate 11 installs in the exhaust airway, the rethread clamping mechanism 13 will dustcoat 12 joint with can accomplish the installation of this non return fire prevention valve on the bottom plate 11, it is more convenient in the installation, and during work such as the maintenance of follow-up fire prevention valve, the change of fuse-link 204 will alone dustcoat 12 is torn open and can be gone on, provides convenient for the staff, secondly, through the setting of alarm 205, when the conflagration does not appear and fire prevention valve block 202 is normally covered, alarm 205 then can start, in time reminds the user, avoids having the potential safety hazard.

Specifically, the utility model relates to a non return fire prevention valve's working process does: the fire prevention valve plate 202 keeps an open state under the limiting action of the fuse link 204, and when a user discharges oil smoke normally, the check assembly 3 is in an open state under the impact of smoke and continuously sends the oil smoke to the opening 111 along the air hole 203. When people are basically evacuated, the air exhaust function of the air exhaust duct is meaningless, the temperature of the air exhaust duct reaches the melting point of the fuse link 204 when being raised to 280 ℃, the fuse link 204 is fused, and the fireproof valve plate 202 is covered outside the air hole 203 under the influence of gravity after losing the limiting function of the fuse link 204, so that the smoke in the fire disaster is prevented from flowing backwards.

As a preferable mode of this embodiment, the latch mechanism 13 includes a plurality of latch rods 131 and a plurality of latches 132; the clamping rods 131 are rotatably connected to the bottom plate 11; the plurality of blocks 132 are fixedly connected to one side of the outer cover 12 away from the bottom plate 11, a middle portion of the outer cover is provided with a block hole 133 adapted to the blocking rod 131, and one side of the block 132 away from the blocking rod 131 is provided with an insertion hole 134 opened from a side wall thereof to be communicated with the block hole 133.

Further, a recess 113 is formed on the bottom plate 11 for positioning the outer cover 12.

Specifically, the bottom plate 11 passes through the mounting hole 112 is installed in the exhaust airway, its accessible cement or its material reinforcement the position of bottom plate 11, afterwards the one end of dustcoat 12 is arranged in the depressed part 113, and then the restriction the activity of direction about the dustcoat 12 is from top to bottom, through rotating the kelly 131 makes the kelly 131 follows the insert hole 134 joint is gone into in the kelly 133, and then the restriction the activity of dustcoat 12 fore-and-aft direction, so that dustcoat 12 with the position of bottom plate 11 is relatively fixed. The structure of the shell 1 is simple, the fire-proof valve and the check valve are protected respectively, the clamping rod 131 is pressed to be separated from the clamping hole 133, the outer cover 12 can be separated from the bottom plate 11, and therefore assembly and maintenance are simple and convenient.

As a preferable scheme of this embodiment, a fixing plate 206 is fixedly connected to the fire-proof valve body 201, one end of the fuse link 204 is fixedly connected to the fixing plate 206, and the other end is bent to form a limiting portion to abut against one surface of the fire-proof valve plate 202 close to the air hole 203.

Referring to fig. 5, in this embodiment, the fire prevention assembly 2 is side-opening type, and the fire prevention valve plate 202 is inclined at a certain angle, when the fire prevention valve plate 202 is limited by the fuse link 204, the opening angle between the fire prevention valve plate 202 and the fire prevention valve body 201 is 45 ° to 60 °, so that after the fuse link 204 is melted, the fire prevention valve plate 202 can be quickly closed under the action of gravity of the fire prevention valve plate 202 and the impact force of the smoke.

As a preferable scheme of this embodiment, a bolt 207 is fixedly connected to the fixing plate 206; one side of the fixing plate 206 close to the fireproof valve plate 202 is provided with a limiting bracket 208, and one end of the limiting bracket 208 is rotatably connected to the bolt 207; a torsion spring 209 is arranged outside the bolt 207, a first force application end of the torsion spring 209 is installed on the fixing plate 206, and a second force application end of the torsion spring 209 is installed on the limiting bracket 208. When the fireproof valve plate 202 is limited by the fuse link 204, the limiting support 208 is abutted against the fireproof valve plate 202, at the moment, the torsion spring 209 is in a compression state, when the fireproof valve plate 202 is covered, the torsion spring 209 loses extrusion force to drive the limiting support 208 to rotate outwards, so that the limiting support 208 is attached to the fireproof valve plate 202, and further the phenomenon that smoke flows backwards due to the fact that the fireproof valve plate 202 is popped up due to an unexpected situation is effectively avoided.

As a preferable scheme of this embodiment, the alarm 205 is provided with a control switch 210, and the fire prevention valve plate 202 is fixedly connected with a control plate 211; when the fireproof valve plate 202 covers the air hole 203, the control plate just presses the control switch 210. When the fire prevention valve block 202 is closed, the control piece 211 is pressed to the control switch, so that the alarm 205 gives an alarm, and a user can know that the fire prevention valve block 202 is abnormally closed by hearing the alarm, and the user is reminded of timely maintenance.

As a preferred scheme of this embodiment, an elastic flame-retardant sealing ring is disposed in the air hole 203, and when the fireproof valve sheet 202 is covered, it contacts with the elastic flame-retardant sealing ring.

As a preferable solution of this embodiment, the fire prevention valve body 201 is provided with a reinforcing portion made of a magnetic material at an outer edge of the air hole 203. This design has strengthened the fire prevention valve block 202 with the tightness of being connected of fire prevention valve body 201 improves the leakproofness, avoids the flue gas to pass through.

As a preferable scheme of the present embodiment, the check assembly 3 includes a rotating shaft 301, a baffle 302, and a limit plate 303; the rotating shaft 301 is rotatably connected to the hollow pipe body; the baffle 302 is provided with an installation block, the installation block is provided with an installation hole 112 matched with the rotating shaft, and the rotating shaft 301 is rotatably connected with the installation hole 112; the limiting plate 303 is arranged on one side of the baffle plate 302 far away from the fireproof valve body 201 and is fixedly connected in the hollow pipe body; when the baffle 302 receives the thrust input from one side of the air hole 203, the baffle 302 is attached to the limiting plate 303 and just plugs the hollow pipe body. Specifically, in this embodiment, the hollow pipeline 121 is obliquely arranged at 45 degrees, the distance from the rotating shaft 301 to the inner top wall of the hollow pipe body is one half of the distance from the rotating shaft to the inner bottom wall of the hollow pipe body, the limiting plate 303 is obliquely arranged at 45 degrees, when the baffle 302 is not subjected to external force or impact force of backflow oil smoke input from one side of the fireproof valve body 201, the baffle will be driven by gravity and/or impact force of the baffle 302 to approach one side of the limiting plate 303, and at this time, the baffle seals the hollow pipe body, so as to prevent external oil smoke from flowing back into a household of a user; when a user discharges oil smoke, the smoke can generate certain impact force on the baffle 302, so that the baffle 302 overcomes the action of gravity and turns upwards, the hollow pipe body is conducted, and the oil smoke is normally discharged.

The utility model relates to a non return fire prevention valve through reasonable structure setting, has solved current fire prevention valve structure complicacy, all has certain inconvenient problem in the aspect of valve body installation and fuse-link change etc.

The above description is only for the preferred embodiment of the present invention, and the structure is not limited to the above-mentioned shape, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a non-return fire prevention valve which characterized in that: including shell, fire prevention subassembly and non return subassembly, wherein:

the housing comprises a base plate and a cover; the middle part of the bottom plate is provided with an opening, and the periphery of the bottom plate is provided with a plurality of mounting holes; the outer cover is fixedly connected to the bottom plate through a clamping mechanism, is of a hollow structure, and one end of the outer cover is communicated with the opening while the other end extends out of a hollow pipeline;

the fireproof component is arranged in the outer cover and comprises a fireproof valve body and a fireproof valve plate; the fireproof valve body is fixedly connected with the outer cover, and the middle part of the fireproof valve body is provided with an air hole communicated with the hollow pipeline; the fireproof valve plate is hinged to the fireproof valve body, a fuse link used for limiting the movement of the fireproof valve plate is fixedly connected to the fireproof valve body, and when the fuse link is fused, the fireproof valve plate covers the air hole; the fire-proof valve body is also provided with an alarm for reminding the closing of the fire-proof valve plate;

the non-return assembly is arranged in the hollow pipeline and used for preventing oil smoke from flowing back.

2. The check fire damper according to claim 1, wherein: the clamping mechanism comprises a plurality of clamping rods and a plurality of clamping blocks; the clamping rods are rotatably connected to the bottom plate; the clamping blocks are fixedly connected to one side, far away from the bottom plate, of the outer cover, clamping holes matched with the clamping rods are formed in the middle of the outer cover, and embedding holes communicated with the clamping holes are formed in the side walls of the clamping blocks on one side, far away from the clamping rods.

3. The check fire damper according to claim 1, wherein: the bottom plate is provided with a concave part for positioning the outer cover.

4. The check fire damper according to claim 1, wherein: the fire-proof valve body is fixedly connected with a fixing piece, one end of the fuse link is fixedly connected to the fixing piece, and the other end of the fuse link is bent to form a limiting part to abut against one surface, close to the air hole, of the fire-proof valve block.

5. The check fire damper of claim 4, wherein: a bolt is fixedly connected to the fixing sheet; one side of the fixing piece, which is close to the fireproof valve plate, is provided with a limiting support, and one end of the limiting support is rotatably connected to the bolt; a torsion spring is arranged outside the bolt, a first force application end of the torsion spring is arranged on the fixing piece, and a second force application end of the torsion spring is arranged on the limiting support.

6. The check fire damper as claimed in claim 1, wherein: the alarm is provided with a control switch, and the fireproof valve plate is fixedly connected with a control plate; when the fireproof valve plate covers the air hole, the control plate just presses the control switch.

7. The check fire damper according to claim 1, wherein: an elastic flame-retardant sealing ring is arranged in the air hole, and when the fireproof valve plate is covered, the fireproof valve plate is contacted with the elastic flame-retardant sealing ring.

8. The check fire damper according to claim 1, wherein: the fireproof valve body is provided with a reinforcing part made of a magnetic material at the outer edge of the air hole.

9. The check fire damper as claimed in claim 1, wherein: the check assembly comprises a rotating shaft, a baffle and a limiting plate; the rotating shaft is rotatably connected to the hollow pipe body; the baffle is provided with an installation block, the installation block is provided with an installation hole matched with the rotating shaft, and the rotating shaft is rotatably connected with the installation hole; the limiting plate is arranged on one side of the baffle, which is far away from the fireproof valve body, and is fixedly connected in the hollow pipe body; when the baffle receives the thrust input by gas pocket one side, the baffle with the limiting plate pastes and touches, and just in time the shutoff hollow tube body.