CN219549706U - Fire control pipeline valve - Google Patents

Abstract

The utility model relates to the field of valve mechanisms, in particular to a fire-fighting pipeline valve, which comprises a smoke exhaust pipeline and a baffle rotationally connected inside the smoke exhaust pipeline, wherein the baffle is arranged parallel to the length direction of the smoke exhaust pipeline, one side of the baffle is connected with a weight, the weight is positioned on the baffle at a position far away from the rotation axis of the baffle, the baffle can keep a trend of rotating towards a vertical state under the action of gravity of the weight, and a limiting mechanism is arranged outside the smoke exhaust pipeline and is used for limiting the rotation of the baffle before the temperature of the smoke exhaust pipeline reaches a specified temperature. The utility model has the effect of improving the fire resistance of the fire-fighting pipeline valve.

Description

Fire control pipeline valve

Technical Field

The utility model relates to the technical field of valve mechanisms, in particular to a fire-fighting pipeline valve.

Background

In large buildings, fire protection measures are an extremely important ring; in a building, a plurality of fire protection measures are generally set at the same time, for example: smoke evacuation system, spray system, fire hose, etc. The smoke exhaust system mainly comprises a smoke exhaust pipeline, a smoke exhaust fire-proof valve exhaust fan and the like. Smoke in the room is discharged through the exhaust fan, more living opportunities are provided for indoor personnel, and the smoke discharging fireproof valve mainly has the function of closing smoke discharging when the fire spreads to the exhaust pipeline, so that the fire spreading is blocked.

The traditional smoke exhaust fire damper mainly comprises a smoke exhaust pipeline, a baffle plate and an actuating mechanism. The baffle rotates to be connected inside exhaust pipe, rotates the baffle and can carry out shutoff to exhaust pipe. The actuating mechanism mainly comprises a spring, a relay and a micro switch. The spring is connected with the baffle for make the baffle keep to the orientation pivoted trend to the shutoff of fume tube, micro-gap switch is used for spacing the baffle, then cancel the spacing to baffle pivoted when the temperature is higher through the relay. When fire spreads to the smoke exhaust pipeline, the temperature of the smoke exhaust pipeline rises, and then the temperature sensor transmits a signal to the controller, and then the controller controls the relay to enable the micro switch to cancel limiting of the baffle. At this time, the baffle automatically rotates to block the smoke exhaust pipeline under the action of the spring, so that the fire is prevented from spreading.

In the use process of the traditional smoke exhaust fireproof valve, the spring is in a compressed or stretched state for a long time. The spring can lead to the spring performance decline when being in tensile or compression state for a long time, leads to baffle turned angle inadequately when the conflagration takes place, leads to the unable complete closure of fire prevention valve that discharges fume, and then leads to the fireproof effect not good.

Disclosure of Invention

In order to improve the fireproof performance of the valve, the utility model provides a fire-fighting pipeline valve.

The utility model provides a fire-fighting pipeline valve which adopts the following technical scheme:

the utility model provides a fire control pipeline valve, includes exhaust pipe and rotates the baffle of connecting inside exhaust pipe, the baffle sets up in parallel to exhaust pipe's length direction, baffle one side is connected with the pouring weight, the pouring weight is located keeping away from baffle axis of rotation's position on the baffle the effect of gravity of pouring weight down the baffle can keep to vertical state pivoted trend, exhaust pipe outside is provided with stop gear, stop gear is used for carrying out spacingly to the rotation of baffle before exhaust pipe temperature reaches appointed temperature.

Through adopting above-mentioned technical scheme, under the normal condition, exhaust duct level sets up, and stop gear carries out spacingly to the rotation of baffle, and the baffle is on a parallel with exhaust duct's length direction to make exhaust duct keep penetrating. When the fire spreads to the vicinity of the smoke exhaust pipe, the temperature of the smoke exhaust pipe rises to a certain extent, and the limiting mechanism cancels the limiting of the baffle. At this time, the baffle automatically rotates under the action of the weight to block the smoke exhaust pipeline, thereby blocking the fire from spreading along the smoke exhaust pipeline. The device drives the baffle to rotate by gravity, compared with spring driving, the condition that the baffle cannot well plug the smoke exhaust pipeline due to spring failure is reduced, and compared with spring driving, the device has higher fire resistance.

Optionally, be provided with stable subassembly on the baffle, stable subassembly includes the laminating piece, laminating piece is along being on a parallel with baffle and perpendicular to baffle axis of rotation's direction sliding connection on the baffle, the laminating groove has been seted up on the exhaust duct inside wall, when the baffle carries out the shutoff to exhaust duct, laminating piece can imbed in the laminating groove.

Through adopting above-mentioned technical scheme, after the conflagration spread to certain degree, the baffle rotates voluntarily and blocks up exhaust pipe, and the laminating piece can imbed the laminating groove and carry out spacingly to the baffle this moment to reduce the baffle and give birth to the condition of rocking under the effect of air current, further improve the fire resistance of valve.

Optionally, the stabilizing assembly further includes an elastic member for maintaining the tendency of the lamination block to move away from the baffle in the self sliding direction.

Through adopting above-mentioned technical scheme, under the effect of elastic component, the baffle is carried out the shutoff back laminating piece to exhaust pipe and can be stable embedding in laminating groove to the stability when further improving the baffle to exhaust pipe shutoff.

Optionally, the laminating piece is the arcwall face for one side of keeping away from the baffle, when the baffle carries out shutoff to exhaust duct, the arcwall face part embedding laminating groove of baffle.

Through adopting above-mentioned technical scheme, when needs reset the baffle after the conflagration takes place, rotate the baffle, laminating piece can deviate from the spacing of canceling the baffle from laminating groove voluntarily under the effect of arcwall face, makes things convenient for the staff to reset the valve.

Optionally, the stabilizing components are arranged in two groups, and the two groups of stabilizing components are respectively positioned on two sides of the baffle plate parallel to the rotation axis of the baffle plate.

By adopting the technical scheme, the stability of the baffle plate in plugging the smoke exhaust pipeline is further improved by the two groups of stabilizing components, so that the fire resistance of the valve is further improved.

Optionally, stop gear includes ratchet, pin and driving piece, the ratchet sets up with the axis of rotation of baffle is coaxial, the pin radially sets up along the ratchet, and the pin can radially slide to the direction that is close to the ratchet along the ratchet under the effect of self gravity, the one end that the pin is close to the ratchet can block into between two adjacent ratchets, the driving piece is installed and is used for driving the pin and slide to the direction of keeping away from the ratchet when exhaust pipe temperature rises on exhaust pipe.

Through adopting above-mentioned technical scheme, when pin tip card was between two ratchets, the pin can block ratchet rotation to realize baffle pivoted spacing, make the baffle keep the state parallel with exhaust duct's length direction. When the temperature of the smoke exhaust pipeline is higher, the driving piece drives the stop lever to move in a direction away from the ratchet wheel, and when the stop lever is completely separated from the ratchet wheel, the limit of the baffle plate is canceled.

Optionally, the driving piece is bimetallic strip, bimetallic strip one end is connected on exhaust flue, and the other end is connected with the pin, bimetallic strip keeps away from exhaust flue's one end can be towards keeping away from the direction bending of ratchet when rising in the temperature.

Through adopting above-mentioned technical scheme, through the metal sheet that two thermal expansion coefficients of bimetallic strip are different, after exhaust flue gives bimetallic strip with temperature transfer, bimetallic strip one end bending drives the pin and breaks away from the ratchet, cancel the spacing to the ratchet.

Optionally, a pressing block is disposed at one end of the stop lever away from the ratchet, and the pressing block is used for applying force for enabling the stop lever to move towards the direction close to the ratchet to the stop lever.

Through adopting above-mentioned technical scheme, the stability when a briquetting can improve pin tip card and go into between two adjacent ratchets to improve the stability in the valve use.

Drawings

Fig. 1 is a schematic overall structure of an embodiment of the present utility model.

Fig. 2 is a schematic view of the internal structure of the smoke exhaust duct according to the embodiment of the present utility model.

Fig. 3 is an enlarged view of portion a of fig. 2 in accordance with an embodiment of the present utility model.

Fig. 4 is a schematic structural view of a limiting mechanism according to an embodiment of the present utility model.

Reference numerals: 1. a smoke exhaust duct; 2. a baffle; 3. a weight block; 4. a limiting mechanism; 41. a ratchet wheel; 42. a stop lever; 43. a driving member; 44. briquetting; 5. a stabilizing assembly; 51. an elastic member; 52. a bonding block; 53. a mounting groove; 6. a protective cover; 7. the handle is turned.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-4.

The embodiment of the utility model discloses a fire-fighting pipeline valve.

Referring to fig. 1, a fire pipe valve includes a smoke exhaust pipe 1, a baffle 2, a weight 3, and a limiting mechanism 4. The smoke exhaust pipeline 1 is of a square cylindrical structure, the baffle plate 2 is of a square plate-shaped structure, and the baffle plate 2 is rotatably connected to the inner side wall of the smoke exhaust pipeline 1. The weight 3 is welded to one side of the barrier 2, and the weight 3 is located on the barrier 2 at a position away from the rotational axis of the barrier 2. Under the influence of the weight 3, the barrier 2 has a tendency to rotate toward a vertical state. The limiting mechanism 4 is arranged outside the smoke exhaust pipeline 1 and is used for limiting the baffle plate 2 when the temperature of the smoke exhaust pipeline 1 is normal, so that the baffle plate 2 is kept in a horizontal state. When the temperature of the smoke exhaust pipeline 1 is too high, namely the fire is spread near the smoke exhaust pipeline 1, the limiting mechanism 4 cancels the limiting of the baffle plate 2, and the baffle plate 2 automatically seals the smoke exhaust pipeline 1 under the action of the weight 3 to prevent the fire from spreading along the smoke exhaust pipeline 1.

Referring to fig. 1, 2 and 3, for convenience of description, the smoke exhaust duct 1 is defined to be horizontally arranged, and the baffle 2 is in a valve opening state when being horizontally arranged; the smoke exhaust pipeline 1 is horizontally arranged, and the baffle plate 2 is in a valve closing state when in a vertical state. In the closed state of the valve, the weight 3 is located below the axis of rotation of the barrier 2. Mounting grooves 53 are formed in two side surfaces of the baffle plate 2 parallel to the rotation axis of the baffle plate 2, and the mounting grooves 53 penetrate through the baffle plate 2 along the direction parallel to the rotation axis of the baffle plate 2. The mounting grooves 53 are internally provided with stabilizing assemblies 5, and the stabilizing assemblies 5 comprise elastic pieces 51 and attaching blocks 52; the laminating piece 52 is rectangular plate-shaped structure, and the both ends of laminating piece 52 are parallel and level with baffle 2 two sides face perpendicular to self axis of rotation. The fitting block 52 is slidably coupled in the mounting groove 53 in a direction perpendicular to the rotational axis of the shutter 2 and parallel to the shutter 2. The elastic member 51 is provided on a side of the fitting block 52 close to the rotation axis of the shutter 2, and the elastic member 51 serves to keep the fitting block 52 moving toward the outside of the mounting groove 53 in the self sliding direction. In this embodiment, the elastic member 51 is a compression spring, one end of which is welded to one side of the attaching block 52 near the rotation axis of the baffle 2, and the other end of which is welded to the side of the mounting groove 53 near the rotation axis of the baffle 2. The side of the fitting block 52 away from the rotation axis of the baffle 2 is an arc surface. And bonding grooves matched with the arc surfaces are formed in the two side walls of the smoke exhaust pipeline 1 corresponding to the two bonding blocks 52. When the valve is in a closed state, the arc-shaped surface part of the attaching block 52 can be embedded in the attaching groove to limit the position of the baffle plate 2, so that the shaking condition of the baffle plate 2 in the plugging process of the smoke exhaust pipeline 1 is reduced, and the fireproof effect of the valve is further improved.

Referring to fig. 1 and 4, a rotation shaft is welded to one side of the baffle 2 perpendicular to the rotation axis thereof, the rotation shaft is coaxially disposed with the rotation axis of the baffle 2, and one end of the rotation shaft is welded to the baffle 2 while the other end extends to the outside of the smoke exhaust duct 1 along the rotation axis of the baffle 2. The position of the smoke exhaust pipeline 1 corresponding to the rotating shaft is provided with an avoidance hole, and the rotating shaft is rotationally connected in the avoidance groove around the axis of the rotating shaft. The rotation of the rotating shaft can drive the baffle plate 2 to rotate. The limiting mechanism 4 comprises a ratchet wheel 41 and a stop lever 42, and the ratchet wheel 41 is coaxially welded on the rotating shaft. The stop lever 42 is radially arranged along the ratchet wheel 41, the stop lever 42 is slidably connected to the smoke exhaust duct 1 in the vertical direction, and the stop lever 42 is located above the ratchet wheel 41. The bar 42 can move in the radial direction of the ratchet 41 toward the direction approaching the ratchet 41 under the action of gravity, and one end of the bar 42 approaching the ratchet 41 can be caught in the gap between the adjacent two ratchets. When one end of the stop lever 42, which is close to the ratchet 41, is clamped between two adjacent ratchets, the stop lever 42 can limit the ratchet 41, so that the valve is kept in a normally open state.

Referring to fig. 1 and 4, the limiting mechanism 4 further includes a driving member 43, where the driving member 43 is installed on the smoke exhaust pipe 1, and is used to drive one end of the stop lever 42, which is close to the ratchet, to disengage from the ratchet after the temperature of the smoke exhaust pipe 1 reaches a certain level. In this embodiment, the driving member 43 is a bimetal, one end of the bimetal is welded to the smoke exhaust pipe 1, the other end of the bimetal is connected to the stop lever 42, and when the temperature of the smoke exhaust pipe 1 increases, the end of the bimetal, which is far away from the smoke exhaust pipe 1, is bent in a direction away from the ratchet, so as to drive the stop lever 42 to move in a direction away from the ratchet 41. When the stop lever 42 is completely separated from the ratchet wheel 41, the baffle plate 2 automatically rotates to seal the smoke exhaust pipeline 1 under the action of the weight 3. The limiting mechanism 4 further comprises a pressing block 44, the pressing block 44 is welded at one end of the stop lever 42 far away from the ratchet wheel 41, and the pressing block 44 can enable the stop lever 42 to be stably embedded between two adjacent tooth grooves of the ratchet wheel 41 under the condition that no other external force exists, so that the stability of the valve opening state is improved.

Referring to fig. 1, a protecting cover 6 is arranged on the smoke exhaust pipe 1 corresponding to the position of the limiting mechanism 4, the protecting cover 6 is covered outside the ratchet 41 to protect the ratchet 41, and the situation that the ratchet 41 is rusted in the use process is reduced. The position of the protective cover 6 corresponding to the stop lever 42 is provided with a sliding hole, and the stop lever 42 is in sliding connection in the sliding hole.

Referring to fig. 1, a rotating handle 7 is provided on a side of the protection cover 6 away from the smoke exhaust duct 1, and one end of the rotating shaft away from the baffle plate 2 sequentially passes through a ratchet 41 and the protection cover 6 to be welded with the handle. The handle 7 can drive the baffle plate 2 to rotate, and when the fire disaster happens, the handle 7 can be rotated to reset the baffle plate 2, so that the valve can conveniently cope with the next fire disaster.

The implementation principle of the fire-fighting pipeline valve provided by the embodiment of the utility model is as follows: under normal conditions, the valve is in an open state, and at the moment, one end of the stop lever 42, which is close to the ratchet wheel 41, is clamped between two adjacent ratchet teeth, so that the baffle plate 2 is kept in a horizontal state, and the baffle plate 2 has a tendency to rotate towards a vertical state under the action of the weight 3. After the fire occurs, the temperature of the smoke exhaust duct 1 is continuously increased along with the spread of the fire, the bimetallic strip starts to bend at the moment, and the stop lever 42 is completely separated from the ratchet wheel 41 after the temperature of the smoke exhaust duct 1 is increased to a certain degree. At the moment, the baffle plate 2 can automatically rotate to a vertical state to finish the blocking of the smoke exhaust pipeline 1, so that the fire is prevented from spreading along the smoke exhaust pipeline 1.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (8)

1. The utility model provides a fire control pipeline valve, includes exhaust pipe (1) and rotates baffle (2) of connecting in exhaust pipe (1) inside, its characterized in that: baffle (2) are on a parallel with the length direction setting of exhaust pipe (1), baffle (2) one side is connected with pouring weight (3), pouring weight (3) are located keep away from baffle (2) axis of rotation's position on baffle (2) can keep to vertical state pivoted trend under the effect of gravity of pouring weight (3), exhaust pipe (1) outside is provided with stop gear (4), stop gear (4) are used for carrying out spacingly to the rotation of baffle (2) before exhaust pipe (1) temperature reaches appointed temperature.

2. A fire fighting pipeline valve according to claim 1, wherein: be provided with on baffle (2) and stabilize subassembly (5), stabilize subassembly (5) including laminating piece (52), laminating piece (52) are along being on a parallel with baffle (2) and perpendicular to baffle (2) axis of rotation's direction sliding connection on baffle (2), the laminating groove has been seted up on exhaust duct (1) inside wall, when baffle (2) carry out the shutoff to exhaust duct (1), laminating piece (52) can imbed in the laminating groove.

3. A fire fighting pipeline valve according to claim 2, characterized in that: the stabilizing assembly (5) further comprises an elastic member (51), wherein the elastic member (51) is used for keeping the attaching block (52) moving away from the baffle plate (2) along the sliding direction of the attaching block.

4. A fire fighting pipeline valve according to claim 3, wherein: one side of the laminating block (52) away from the baffle (2) is an arc-shaped surface, and when the baffle (2) is used for plugging the smoke exhaust pipeline (1), the arc-shaped surface of the baffle (2) is partially embedded into the laminating groove.

5. A fire fighting pipeline valve according to claim 2, characterized in that: the stabilizing assemblies (5) are arranged in two groups, and the two groups of stabilizing assemblies (5) are respectively positioned on two side surfaces of the baffle plate (2) parallel to the rotation axis of the baffle plate.

6. A fire fighting pipeline valve according to claim 1, wherein: stop gear (4) include ratchet (41), pin (42) and driving piece (43), ratchet (41) are coaxial with the axis of rotation setting of baffle (2), pin (42) are along ratchet (41) radial setting, and pin (42) can radially slide to the direction that is close to ratchet (41) along ratchet (41) under the effect of self gravity, one end that pin (42) is close to ratchet (41) can block into between two adjacent ratchets, driving piece (43) are installed on smoke exhaust pipeline (1) and are used for driving pin (42) to the direction slip of keeping away from ratchet (41) when smoke exhaust pipeline (1) temperature rise.

7. The fire fighting pipeline valve of claim 6 wherein: the driving piece (43) is a bimetallic strip, one end of the bimetallic strip is connected to the smoke exhaust pipeline (1), the other end of the bimetallic strip is connected with the stop lever (42), and one end of the bimetallic strip, which is far away from the smoke exhaust pipeline (1), can bend towards the direction far away from the ratchet wheel (41) when the temperature rises.

8. The fire fighting pipeline valve of claim 7, wherein: a pressing block (44) is arranged at one end, far away from the ratchet wheel (41), of the stop lever (42), and the pressing block (44) is used for applying force for enabling the stop lever (42) to move towards the direction close to the ratchet wheel (41) to the stop lever (42).