A fire damper for flue smoke exhaust

Abstract

The invention discloses a fire damper for smoke exhaust in a flue, comprising a valve body tube, a movable ball, a plurality of fan plates, a self-rotating ring, a plurality of push-pull rods, an exhaust assisting plate, a rolling column and a movable plate; further comprising a boosting component which enables the fan plate to fan and exhaust smoke through the movable ball, and enables the push-pull rod to reciprocate and drive the exhaust assisting plate to move and assist in exhausting smoke; an adjusting component which automatically opens the exhaust assisting plate to a vertical state and moves to exhaust smoke through the rolling column, and then when the exhaust assisting plate moves back, the exhaust assisting plate is in a horizontal state; a motor enables the rolling rod to make a circular motion at an inclined angle through the self-rotating rod, and the rolling rod rolls along the inner wall of a fixed sleeve, so that the fan plate makes a circular motion and rotates at the same time, thereby helping to increase the smoke exhaust efficiency; while the fan plate makes a circular motion, it drives the push-pull rod to reciprocate along the exhaust assisting hole, and the push-pull rod makes a reciprocating motion, so that the exhaust assisting plate moves quickly, and the movement of the exhaust assisting plate enables a rapid position switching, which helps to squeeze the smoke in the exhaust assisting hole.

Description

Technical Field

[0001] The invention relates to the technical field of smoke exhaust fire damper structures, in particular to a fire damper used for smoke exhaust in a flue. Background Art

[0002] Smoke exhaust fire dampers are usually installed on the ducts of mechanical smoke exhaust systems to discharge smoke and hot air in the event of a fire, thereby protecting personnel safety and reducing the impact of fire on buildings.

[0003] Smoke exhaust fire dampers are generally installed in the curved section (or connecting section) of the pipe. The smoke exhaust effect of the curved section of the pipe is poor. The existing smoke exhaust fire dampers only have the effect of connecting smoke exhaust, and the effect is single. No auxiliary exhaust device is set, which easily affects the smoke exhaust effect.

[0004] For this purpose, we propose a fire damper for flue smoke exhaust. Summary of the invention

[0005] The object of the present invention is to provide a fire damper for smoke exhaust in a flue to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides a fire damper for flue smoke exhaust, comprising a valve body tube connected to the flue, wherein a movable ball is movable in the original position in the valve body tube, a plurality of fan plates are fixedly connected to the movable ball, the fan plates are rotatably connected to a rotating ring, a plurality of push-pull rods are movably connected to the rotating ring, a plurality of exhaust-assisting plates are rotatably connected to the ends of the push-pull rods, a rolling column is rotatably connected to the push-pull rods, and a movable plate hinged to the exhaust-assisting plate is provided in the valve body tube; the boosting assembly also includes the boosting assembly, which enables the fan plates to fan and exhaust smoke through the movable ball, and enables the push-pull rods to reciprocate and drive the exhaust-assisting plate to move and exhaust smoke; an adjusting assembly, which automatically opens the exhaust-assisting plate to a vertical state through the rolling column and moves it to exhaust smoke, and then when the exhaust-assisting plate moves back, the exhaust-assisting plate is in a horizontal state.

[0007] Furthermore, the booster assembly includes a fixed cylinder connected and fixed to the interior of the valve body tube, a plurality of drainage-assisting holes movably cooperated with the drainage-assisting plate are opened in the fixed cylinder, a sleeve is fixedly connected to the interior of the valve body tube through a connecting rod, the sleeve is in a truncated cone shape, one end of the sleeve is recessed and cooperated with the movable ball, and the sleeve is rollingly connected to a rolling rod.

[0008] Furthermore, the booster assembly also includes a motor fixedly connected to the valve body tube, the output shaft of the motor is fixedly connected to a rotation rod, the end of the rotation rod is fixedly connected to a connecting rod distributed in an inclined manner, the end of the connecting rod is fixedly connected to a limit cylinder rotatably connected to the rolling rod, the connecting rod and the rolling rod are vertically cross-distributed, and the middle part of the fixed cylinder is fixedly connected to a limit plate that is recessed and cooperates with the movable ball.

[0009] Furthermore, a fixing ring is provided on the outer ring of the movable ball, and the fixing ring is connected and fixed to the fan plate. A limiting ring is rotatably connected to the rotating ring and is connected and fixed to the fan plate. A limiting ball is movably embedded on the rotating ring and is connected and fixed to the push-pull rod. The other end of the push-pull rod is inserted into the drainage hole.

[0010] Furthermore, the adjustment assembly includes a fixing rod rotatably connected to the rolling column, and the end of the movable plate is pressed and fitted against the inner wall of the drainage-aiding hole.

[0011] Furthermore, an inclined tooth plate rollingly matched with the rolling column is movably matched in the drainage-aiding hole, and a compression spring is hung between the inclined tooth plate and the fixed tube to change the distribution state of the drainage-aiding plate.

[0012] Furthermore, a limiting slide plate is fixedly connected to the fixing rod, and a limiting slide groove slidably matched with the limiting slide plate is provided in the drainage-aiding hole to ensure smooth movement of the push-pull rod.

[0013] Furthermore, a first through hole is formed at the end of the sleeve, a second through hole is formed on the movable ball, a plurality of third through holes are formed on the movable ball and are distributed in a circumference and connected to the second through hole, and a matching plate is fixedly connected to the connecting rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The motor causes the rolling rod to make circular motion at an inclined angle through the rotating rod. The rolling rod rolls along the inner wall of the fixed sleeve, causing the fan plate to make circular motion and rotate at the same time, thereby helping to increase the smoke exhaust efficiency, especially the smoke exhaust efficiency in the bending area.

[0016] The fan plate makes circular motion while driving the push-pull rod to make reciprocating motion along the exhaust-aiding hole. The push-pull rod makes reciprocating motion, so that the exhaust-aiding plate moves quickly, and the exhaust-aiding plate moves so that the position is switched quickly, which helps to squeeze the smoke in the exhaust-aiding hole.

[0017] When the push-pull rod moves toward the fixed cylinder, the inclined movable plate switches to a horizontal state, thereby driving the exhaust-aiding plate to switch from a horizontal state to a vertical state. The two vertical exhaust-aiding plates are assembled and combined to block the exhaust-aiding holes. The two vertical exhaust-aiding plates move along the exhaust-aiding holes, thereby quickly squeezing the smoke in the exhaust-aiding holes.

[0018] When the push-pull rod moves away from the fixed cylinder, the horizontal movable plate switches to an inclined state, thereby driving the exhaust assisting plate to switch from a vertical state to a horizontal state, so that the horizontal exhaust assisting plate moves along the exhaust assisting hole. In this way, no back pressure of smoke will be caused. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the valve body tube of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the present invention without the valve body tube;

[0022] Figure 4 It is a schematic diagram of the structure between the fixed cylinder and the self-rotating rod of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the push-pull rod detached from the fan plate of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the present invention in which the limiting cylinder is detached from the rolling rod;

[0025] Figure 7 It is a cross-sectional schematic diagram of the activity ball and its matching structure of the present invention;

[0026] Figure 8 It is a structural schematic diagram of the movable ball split sleeve of the present invention;

[0027] Fig. 9 It is a schematic side view of the structure of the movable ball split sleeve of the present invention;

[0028] Fig.10 It is a schematic diagram of the cross-sectional structure of the fixing cylinder of the present invention;

[0029] Fig.11 It is a schematic diagram of the split structure of the fixed cylinder and one pair of drainage-assisting plates of the present invention;

[0030] Fig.12 It is a schematic diagram of two pairs of drainage-aiding plates and their connection structure of the present invention;

[0031] Fig.13 It is a side view schematic diagram of two pairs of drainage-aiding plates and their connection structure of the present invention;

[0032] Fig.14 It is a schematic diagram of the disassembly of two pairs of drainage-aiding plates and their connection structure of the present invention;

[0033] Fig.15 For the present invention Fig.11 A schematic diagram of the enlarged structure of region A;

[0034] Fig.16 For the present invention Fig.14 Schematic diagram of the enlarged structure of region B.

[0035] In the figure: 1. valve body tube; 2. movable ball; 3. fan plate; 4. rotating ring; 5. push-pull rod; 6. drainage auxiliary plate; 7. rolling column; 8. movable plate; 9. fixed cylinder; 10. drainage auxiliary hole; 11. sleeve; 12. rolling rod; 13. motor; 14. rotating rod; 15. connecting rod; 16. limiting cylinder; 17. limiting plate; 18. fixing ring; 19. limiting ring; 20. limiting ball; 21. fixing rod; 22. inclined tooth plate; 23. compression spring; 24. limiting slide plate; 25. limiting slide groove; 26. first through hole; 27. second through hole; 28. third through hole; 29. ​​matching plate. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figure 1-Figure 16 The present invention provides a fire damper for smoke exhaust from a flue, comprising a valve body tube 1 connected to the flue, a movable ball 2 movable in the original position of the valve body tube 1, a plurality of fan plates 3 fixedly connected to the movable ball 2, the fan plates 3 rotatably connected to a self-rotating ring 4, a plurality of push-pull rods 5 movably connected to the self-rotating ring 4, a plurality of exhaust-assisting plates 6 rotatably connected to the ends of the push-pull rods 5, a rolling column 7 rotatably connected to the push-pull rods 5, and a movable plate 8 hinged to the exhaust-assisting plate 6 is provided in the valve body tube 1; the auxiliary thrust component is also included, the auxiliary thrust component enables the fan plates 3 to fan and exhaust smoke through the movable ball 2, and enables the push-pull rod 5 to reciprocate and drive the exhaust-assisting plate 6 to move and exhaust smoke; an adjustment component, the adjustment component automatically opens the exhaust-assisting plate 6 to a vertical state through the rolling column 7 and moves to exhaust smoke, and then when the exhaust-assisting plate 6 moves back, the exhaust-assisting plate 6 is in a horizontal state;

[0038] In the present application, both ends of the valve body tube 1 are connected and docked with the flue (the valve body tube 1 is used for docking in the bending area). When the flue is not exhausted in time (a detection sensor can be set at the end of the fixed tube 9 in the valve body tube 1, and the smoke exhaust efficiency is detected by the detection sensor, thereby starting the motor 13), the motor 13 drives the rolling rod 12 to make a circular motion at an inclined angle, and the rolling rod 12 rolls along the inner wall of the fixed sleeve 11 (the outer surface of the rolling rod 12 and the inner wall of the sleeve 11 are rough surfaces that match each other), so that the fan plate 3 makes a circular motion and rotates at the same time, thereby helping to increase the smoke exhaust efficiency, especially the smoke exhaust efficiency in the bending area;

[0039] The fan plate 3 makes a circular motion while driving the push-pull rod 5 to make a reciprocating motion along the drainage hole 10;

[0040] When the push-pull rod 5 moves toward the fixed cylinder 9, the rolling column 7 rotates a certain angle, so that the inclined movable plate 8 switches to a horizontal state, thereby driving the exhaust plate 6 to switch from a horizontal state to a vertical state. The two vertical exhaust plates 6 are assembled and combined to block the exhaust hole 10. The two vertical exhaust plates 6 move along the exhaust hole 10, thereby quickly squeezing the smoke in the exhaust hole 10.

[0041] When the push-pull rod 5 moves away from the fixed cylinder 9, the rolling column 7 rotates in the opposite direction at a certain angle, so that the horizontal movable plate 8 switches to an inclined state, thereby driving the exhaust assisting plate 6 to switch from a vertical state to a horizontal state, so that the exhaust assisting plate 6 in the horizontal state moves along the exhaust assisting hole 10. In this manner, no back pressure of the smoke is caused;

[0042] The reciprocating exhaust assisting plate 6 switches between horizontal and vertical states in sequence, which helps to quickly squeeze out the smoke.

[0043] The booster assembly includes a fixed cylinder 9 connected and fixed to the inside of the valve body tube 1, and a plurality of drainage holes 10 are opened in the fixed cylinder 9 and movably cooperate with the drainage assisting plate 6. A sleeve 11 is fixedly connected to the inside of the valve body tube 1 through a connecting rod. The sleeve 11 is in a truncated cone shape, and one end of the sleeve 11 is concavely engaged with the movable ball 2. The sleeve 11 is rollingly connected to a rolling rod 12;

[0044] The booster assembly also includes a motor 13 connected and fixed to the valve body tube 1 (a protective box may be provided on the outer surface of the motor 13, which is not shown in the figure), the output shaft of the motor 13 is fixedly connected to a self-rotating rod 14, the end of the self-rotating rod 14 is fixedly connected to a connecting rod 15 which is obliquely distributed, the end of the connecting rod 15 is fixedly connected to a limiting cylinder 16 which is rotatably connected to the rolling rod 12, the connecting rod 15 and the rolling rod 12 are vertically cross-distributed, and the middle of the fixed cylinder 9 is fixedly connected to a limiting plate 17 which is concavely matched with the movable ball 2;

[0045] In the present application, the motor 13 drives the self-rotating rod 14 to rotate in the original position, and the connecting rod 15 and the limiting cylinder 16 rotate in a circle (with the self-rotating rod 14 as the rotation axis). Due to the limiting effect of the sleeve 11 and the limiting plate 17 (the end of the sleeve 11 and one end of the limiting plate 17 are in the shape of a groove that cooperates with the movable ball 2), the movable ball 2 rotates in the original position;

[0046] In the present application, the extension line of the rolling rod 12 coincides with the center of the movable ball 2. The rolling rod 12 makes a circular motion under the action of the limiting cylinder 16, and under the action of the inner wall of the fixed sleeve 11, the rolling rod 12 rolls along the inclined inner wall of the sleeve 11, so that the fan plate 3 shakes at a certain angle and rotates at the same time, thereby fanning the inside of the valve body tube 1, which helps to increase the smoke exhaust efficiency.

[0047] The outer ring of the movable ball 2 is provided with a fixed ring 18, which is connected and fixed to the multi-slice plate 3. The self-rotating ring 4 is rotatably connected with a limiting ring 19 connected and fixed to the slice plate 3. The self-rotating ring 4 is movably embedded with a limiting ball 20 connected and fixed to the push-pull rod 5. The other end of the push-pull rod 5 is inserted into the drainage-aiding hole 10.

[0048] A limiting slide plate 24 is fixedly connected to the fixing rod 21, and a limiting slide groove 25 slidably matched with the limiting slide plate 24 is provided in the drainage-aiding hole 10;

[0049] The fixing ring 18 and the limiting ring 19 rotate while the fan plate 3 makes a circular motion, and the rotating ring 4 rotates in coordination with the limiting ring 19, that is, the rotating ring 4 rotates in the limiting ring 19, thereby making the push-pull rod 5 reciprocate;

[0050] Furthermore, through the cooperation between the limiting sliding groove 25 and the limiting sliding plate 24 , when the push-pull rod 5 reciprocates, the push-pull rod 5 will not rotate or deviate and will move smoothly in the drainage-aiding hole 10 .

[0051] The adjustment assembly includes a fixed rod 21 rotatably connected to the rolling column 7, and the end of the movable plate 8 is pressed against the inner wall of the drainage-aiding hole 10;

[0052] An inclined tooth plate 22 is movably matched in the drainage-aiding hole 10 and rolls with the rolling column 7. A compression spring 23 is hooked and matched between the inclined tooth plate 22 and the fixed cylinder 9.

[0053] In the present application, the push-pull rod 5 performs reciprocating motion, so that the exhaust assisting plate 6 moves quickly, and the exhaust assisting plate 6 moves to quickly switch positions, which helps to squeeze the smoke in the exhaust assisting hole 10. The exhaust assisting plate 6 moves faster, which helps to exhaust smoke.

[0054] When the push-pull rod 5 moves in the direction close to the fixed cylinder 9: the rolling column 7 moves synchronously and contacts the inclined tooth plate 22 at one end of the fixed cylinder 9. At this time, the inclined tooth plate 22 rolls with the rolling column 7 (the compression spring 23 has a small activity to ensure the rolling of the rolling column 7), so that the rolling column 7 rotates a certain angle, and the rolling column 7 drives the movable plate 8 to rotate, so that the inclined movable plate 8 switches to a horizontal state, thereby driving the auxiliary discharge plate 6 to switch from a horizontal state to a vertical state, and the two vertical auxiliary discharge plates 6 are assembled and combined to block the auxiliary discharge hole 10 (the auxiliary discharge plate 6 has a large pressure and auxiliary discharge area for smoke), and the two vertical auxiliary discharge plates 6 move quickly along the auxiliary discharge hole 10, thereby quickly squeezing the smoke in the auxiliary discharge hole 10, and when the rolling column 7 moves to the inclined tooth plate 22 at the other end of the fixed cylinder 9, the inclined tooth plate 22 does not roll with the rolling column 7 (the compression spring 23 has a large activity and the rolling column 7 does not roll), and the auxiliary discharge plate 6 will not switch;

[0055] When the push-pull rod 5 moves away from the fixed cylinder 9: the exhaust plate 6 and the rolling column 7 move in opposite directions, and the rolling column 7 contacts the inclined tooth plate 22 located at the other end of the fixed cylinder 9. At this time, the inclined tooth plate 22 and the rolling column 7 roll together, and the rolling column 7 rotates a certain angle, and the rolling column 7 drives the movable plate 8 to rotate, so that the horizontal movable plate 8 switches to an inclined state (the inner wall of the exhaust hole 10 presses the end of the movable plate 8 during the rotation process, so that the movable plate 8 is easy to slide along the rolling column 7), thereby driving the exhaust plate 6 to switch from a vertical state to a horizontal state, so that the horizontal exhaust plate 6 moves along the exhaust hole 10. In this way, the exhaust plate 6 has a small pressing effect area on the smoke, and will not cause smoke back pressure;

[0056] The reciprocating exhaust assisting plate 6 switches between horizontal and vertical states synchronously, which helps to quickly squeeze out the smoke and further ensure the smoke exhaust efficiency;

[0057] Among them, it is worth noting that the inclination directions of the top surfaces of the two inclined tooth plates 22 located in the same drainage-aiding hole 10 and distributed on the same horizontal plane are opposite to each other, thereby ensuring that the rolling column 7 rotates in opposite directions when the push-pull rod 5 moves towards the fixed cylinder 9 and when the push-pull rod 5 moves away from the fixed cylinder 9, that is, when the rolling column 7 first contacts the inclined back side of the inclined tooth plate 22, the rolling column 7 will not rotate; when the rolling column 7 contacts the inclined top end of the inclined tooth plate 22, the rolling column 7 will rotate (equivalent to the effect of the ratchet and the ratchet teeth).

[0058] A first through hole 26 is formed at the end of the sleeve 11, a second through hole 27 is formed on the movable ball 2, and a plurality of third through holes 28 are formed on the movable ball 2 and are distributed in a circumference and connected to the second through hole 27. A matching plate 29 is fixedly connected to the connecting rod 15. The connecting rod 15 that moves in a circular motion drives the matching plate 29 to move, thereby further driving the movement of the smoke, and the moving area of ​​the matching plate 29 is matched with the first through hole 26, the second through hole 27 and the third through hole 28.

[0059] Furthermore, the first through hole 26 cooperates with the movable rolling rod 12 and the movable second through hole 27 and third through hole 28 to help increase the flow efficiency of the smoke.

[0060] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fire damper for flue smoke exhaust, characterized in that: include: A valve body tube (1) connected to the flue, wherein a movable ball (2) is movable in an original position in the valve body tube (1), a plurality of fan plates (3) are fixedly connected to the movable ball (2), the fan plates (3) are rotatably connected to a self-rotating ring (4), a plurality of push-pull rods (5) are movably connected to the self-rotating ring (4), the ends of the push-pull rods (5) are rotatably connected to a plurality of exhaust-assisting plates (6), the push-pull rods (5) are rotatably connected to a rolling column (7), and a movable plate (8) hingedly connected to the exhaust-assisting plate (6) is provided in the valve body tube (1); Also includes: A booster assembly, wherein the booster assembly causes the fan plate (3) to fan and exhaust smoke through the movable ball (2), and causes the push-pull rod (5) to reciprocate and drive the exhaust assisting plate (6) to move and assist in exhausting smoke; An adjustment component, wherein the adjustment component automatically opens the exhaust assisting plate (6) to a vertical state through the rolling column (7) and moves to exhaust smoke, and then when the exhaust assisting plate (6) moves back, the exhaust assisting plate (6) is in a horizontal state.

2. A fire damper for smoke exhaust according to claim 1, characterized in that: The booster assembly comprises a fixed cylinder (9) connected and fixed to the inside of the valve body tube (1), a plurality of drainage-assisting holes (10) movably matched with the drainage-assisting plate (6) are provided in the fixed cylinder (9), a sleeve (11) is fixedly connected to the inside of the valve body tube (1) via a connecting rod, the sleeve (11) is in a truncated cone shape, one end of the sleeve (11) is recessed and matched with the movable ball (2), and the sleeve (11) is rollingly connected to a rolling rod (12).

3. A fire damper for smoke exhaust according to claim 2, characterized in that: The booster assembly also includes a motor (13) connected and fixed to the valve body tube (1), the output shaft of the motor (13) is fixedly connected to a self-rotating rod (14), the end of the self-rotating rod (14) is fixedly connected to a connecting rod (15) distributed in an inclined manner, the end of the connecting rod (15) is fixedly connected to a limiting cylinder (16) rotatably connected to the rolling rod (12), the connecting rod (15) and the rolling rod (12) are vertically cross-distributed, and the middle of the fixed cylinder (9) is fixedly connected to a limiting plate (17) recessed and matched with the movable ball (2).

4. A fire damper for smoke exhaust according to claim 3, characterized in that: The outer ring of the movable ball (2) is provided with a fixed ring (18), and the fixed ring (18) is connected and fixed to the fan plate (3). The self-rotating ring (4) is rotatably connected to a limiting ring (19) connected and fixed to the fan plate (3). The self-rotating ring (4) is movably embedded with a limiting ball (20) connected and fixed to the push-pull rod (5), and the other end of the push-pull rod (5) is inserted into the drainage-aiding hole (10).

5. A fire damper for smoke exhaust according to claim 2, characterized in that: The adjustment assembly comprises a fixed rod (21) rotatably connected to the rolling column (7), and the end of the movable plate (8) is pressed against the inner wall of the drainage-aiding hole (10).

6. A fire damper for smoke exhaust according to claim 2, characterized in that: An inclined tooth plate (22) that rolls with the rolling column (7) is movably engaged in the drainage-assisting hole (10), and a compression spring (23) is hooked and engaged between the inclined tooth plate (22) and the fixed cylinder (9).

7. The fire damper for smoke exhaust according to claim 5, characterized in that: A limiting slide plate (24) is fixedly connected to the fixing rod (21), and a limiting slide groove (25) is provided in the drainage-aiding hole (10) and is slidably matched with the limiting slide plate (24).

8. The fire damper for smoke exhaust according to claim 3, characterized in that: The sleeve (11) has a first through hole (26) at its end, the movable ball (2) has a second through hole (27), the movable ball (2) has a plurality of third through holes (28) distributed in a circumference and connected to the second through hole (27), and the connecting rod (15) is fixedly connected to a matching plate (29).

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