Smoke exhaust fireproof valve with good sealing performance

Abstract

The utility model relates to the technical field of smoke exhaust valves, in particular to a smoke exhaust fireproof valve with good sealing performance, which comprises a valve body, the valve body comprises a connecting frame, a plurality of blade center shafts are arranged in the connecting frame, blades are arranged on the blade center shafts, a fireproof valve actuator is arranged at the left end of the connecting frame, and a main shaft is arranged in the middle of the connecting frame. The left end of the main shaft penetrates through the connecting frame and the actuator and extends out of the valve body, the left end of the main shaft is connected with a control rod, the right end of the connecting frame is provided with a connecting rod, the connecting rod mechanism comprises a connecting rod, the right end of the blade middle shaft is provided with a blade auxiliary shaft, and the right end of the main shaft and the right end of the blade auxiliary shaft are provided with connecting pieces. The connecting sheets are correspondingly hinged to the hinge shafts; according to the smoke exhaust fireproof valve, a gap between every two adjacent blades can be effectively sealed, the sealing effect of the smoke exhaust fireproof valve is improved, and the situation of air leakage is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a smoke exhaust valve technical field especially relates to a good sealing performance smoke exhaust fire damper. BACKGROUND

[0002] The smoke exhaust fire damper is a kind of fire-fighting components, generally installed on the pipeline of mechanical smoke exhaust system, and it is in open state usually, opens when fire occurs, and when the temperature of smoke exhaust pipeline reaches 280 degrees, it is closed, and it meets the smoke leakage amount and fire resistance integrity requirements within a certain time, plays the role of smoke isolation and fire resistance.

[0003] The existing smoke exhaust fire damper can exist the gap of blade closure not tight, and the situation of the gap of blade closure not tight leads to the situation of air leakage. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of smoke exhaust fire dampers with good sealing performance, the utility model can effectively close the gap between adjacent two blades, improve the sealing effect of smoke exhaust fire damper, avoid the situation of air leakage.

[0005] The utility model is realized through the following technical scheme, a kind of smoke exhaust fire damper with good sealing performance, including valve body, the valve body includes connecting frame, several blade middle shafts are provided in the connecting frame, several the blade middle shafts are mutually parallel arrangement, several the blade middle shafts are all provided with blade, the left end of the connecting frame is provided with fire damper actuator, the middle part of the connecting frame is provided with main shaft, the left end of the main shaft passes through the connecting frame with actuator and extends to the outside of valve body, the left end of this main shaft is connected with control rod, the right end of the connecting frame is provided with connecting rod mechanism, the connecting rod mechanism includes connecting rod, the right end of several the blade middle shafts is all provided with blade auxiliary shaft, the left end of the blade auxiliary shaft is inserted into the blade middle shaft, and is fixedly connected with blade middle shaft, the right end of the main shaft and several the blade auxiliary shaft right end are all provided with connecting piece, the connecting rod is provided with several hinged shafts, several the connecting piece and several the hinged shaft are correspondingly hinged arrangement;The blade includes blade main body, the both ends of the blade main body are provided with superposition part, the connecting piece includes connecting part and fixed part, the connecting part is hinged with the hinged shaft of the connecting rod, the middle part of the blade main body is provided with first circular recess, the middle part of the fixed part is provided with second circular recess, the first circular recess and the second circular recess are aligned and arranged at the outer circumference of the blade auxiliary shaft, and the fixed part of the connecting piece and the blade main body are fixedly connected by screw.

[0006] As preferred, the connecting frame is provided with a first fixed point, the connecting rod is provided with a second fixed point, a return spring is provided between the connecting frame and the connecting rod, one end of the return spring is fixedly connected with the first fixed point, and the other end of the return spring is fixedly connected with the second fixed point.

[0007] Preferably, the connecting part is integrally formed with the fixing part.

[0008] Preferably, the overlapping part is provided with a sealing rubber strip made of elastic material.

[0009] Preferably, the middle part of the blade spindle is provided with a spindle sleeve and a first L-shaped sealing spring, the spindle sleeve is arranged at the outer circumference of the blade spindle, a gap is arranged between the spindle sleeve and the blade, one end of the first L-shaped sealing spring is inserted into the gap between the spindle sleeve and the blade, and the other end of the first L-shaped sealing spring is attached to the surface of the spindle sleeve.

[0010] Preferably, the blade spindle is further provided with a blade fixing plate, the blade fixing plate comprises a second spindle sleeve part, the second spindle sleeve part is arranged at the outer circumference of the blade spindle, connecting plates are fixedly arranged at the upper and lower ends of the second spindle sleeve part, and the connecting plates are fixedly connected with the blade through screws.

[0011] Preferably, the valve body is provided with a temperature sensor.

[0012] The utility model discloses the beneficial effect that when the fire damper actuator senses the fire, through the twist control lever, the control lever drives the main shaft rotation, the connecting piece on the main shaft synchronous rotation, the connecting piece on the main shaft is synchronous rotation through pulling the connecting rod in the rotation process, the connecting piece on the plurality of groups of blade auxiliary shafts synchronous rotation, realizes the plurality of groups of blades to open simultaneously, when closing, the overlapping part of the adjacent two blades and the superposition are together, effectively close the gap between the adjacent two blades, improve the sealing effect of smoke exhaust fire damper, avoid the situation of air leakage, the structure design of the connecting piece of the utility model, the fixed part of connecting piece and the blade main part are fixedly connected through the screw, guarantee the fixed connection of connecting piece and the blade, and it is more convenient to disassemble, replace and maintain. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structural schematic diagram of the utility model.

[0014] Figure 2 It is the structural schematic diagram of the valve body closed state of the utility model.

[0015] Figure 3 It is the structural schematic diagram of the valve body open state of the utility model.

[0016] Figure 4 It is the structural schematic diagram of the valve body open state of the utility model. Figure 1 It is the enlarged structural schematic diagram of the B place.

[0017] Figure 5 It is the enlarged structural schematic diagram of the B place. Figure 2 It is the enlarged structural schematic diagram of the C place.

[0018] Figure 6 For Figure 3 Enlarged structure diagram of D in the middle.

[0019] Figure 7 For the structure diagram of the blade overlap part of the utility model.

[0020] Figure 8 For the structure diagram of the middle part of the blade middle shaft of the utility model.

[0021] Figure 9 For the structure diagram of the blade fixing plate of the utility model. DETAILED DESCRIPTION

[0022] The utility model will be further explained below in combination with the accompanying Figure 1 to the accompanying Figure 9 , and the specific implementation.

[0023] As Figures 1 to 6 shown, a smoke exhaust fire damper with good sealing performance, including valve body, the valve body includes connecting frame 1, the connecting frame 1 is provided with several blade middle shaft 2, several blade middle shaft 2 are mutually parallelly arranged, several blade middle shaft 2 are all provided with blade 3, the left end of connecting frame 1 is provided with fire damper actuator 4, the middle part of connecting frame 1 is provided with main shaft 5, the left end of main shaft 5 passes through connecting frame 1 and fire damper actuator 4 and extends to the outside of valve body, and the left end of the main shaft 5 is connected with control rod 6, the right end of connecting frame 1 is provided with connecting rod mechanism, the connecting rod mechanism includes connecting rod 7, the right end of several blade middle shaft 2 is all provided with blade auxiliary shaft 21, the left end of blade auxiliary shaft 21 is inserted into blade middle shaft 2 and is fixedly connected with blade middle shaft 2, the right end of main shaft 5 and the right end of several blade auxiliary shaft 21 are all provided with connecting piece 8, the connecting rod 7 is provided with several hinged shafts, and several connecting pieces 8 are hingedly arranged in correspondence with several hinged shafts;The blade 3 includes blade main body 31, both ends of blade main body 31 are provided with overlap part 32, the connecting piece 8 includes connecting part 81 and fixed part 82, the connecting part 81 is hingedly arranged with the hinged shaft of connecting rod 7, the middle part of blade main body 31 is provided with first circular arc groove 311, the middle part of fixed part 82 is provided with second circular arc groove 821, the first circular arc groove 311 and the second circular arc groove 821 are arranged in alignment at the outer circumference of blade auxiliary shaft 21, and the fixed part 82 of connecting piece 8 and blade main body 31 are fixedly connected by screw.

[0024] In this embodiment, when the fire damper actuator 4 senses a fire, it twists the control lever 6, which drives the main shaft 5 to rotate. The connecting piece 8 on the main shaft 5 rotates synchronously. During the rotation, the connecting piece 8 on the main shaft 5 pulls the connecting rod 7, causing the connecting pieces 8 on several sets of blade sub-shafts 21 to rotate synchronously. This allows several sets of blades 3 to open and close simultaneously. When the blades 3 are closed, the overlapping parts 32 of two adjacent blades 3 overlap, effectively sealing the gap between the two adjacent blades 3, improving the sealing effect of the smoke exhaust fire damper, and preventing air leakage. In this utility model, the connecting piece 8's fixing part 82 and the blade body 31 are fixedly connected by screws, ensuring the fixed connection between the connecting piece 8 and the blade 3, making disassembly, replacement, and maintenance more convenient.

[0025] In this embodiment, the connecting frame 1 is provided with a first fixed point, the connecting rod 7 is provided with a second fixed point, and a return spring 9 is provided between the connecting frame 1 and the connecting rod 7. One end of the return spring 9 is fixedly connected to the first fixed point, and the other end of the return spring 9 is fixedly connected to the second fixed point. When the fire damper actuator 4 senses a fire, it twists the control rod 6, which drives the main shaft 5 to rotate. The connecting piece 8 on the main shaft 5 rotates synchronously. During the rotation, the connecting piece 8 on the main shaft 5 pulls the connecting rod 7. During the downward pull of the connecting rod 7, the return spring 9 is stretched. When the fire damper actuator 4 senses the end of the fire, the return spring 9 restores the tension generated by its deformation, driving the pull rod 7, the connecting piece 8, and the blade 3 to reset, and the valve body closes.

[0026] In this embodiment, the connecting part 81 and the fixing part 82 are integrally formed to improve the strength of the connecting piece 8 and prevent damage.

[0027] like Figure 7 As shown, in this embodiment, the overlapping part 32 is provided with a sealing strip 321. The sealing strip 321 is made of elastic material. When the blade 3 is closed, the overlapping parts 32 of two adjacent blades 3 will overlap together. The sealing strip 321 of one blade 3 will be squeezed together with the sealing strip 321 of the adjacent blade 3 and deformed. The sealing strip 321 after being squeezed can effectively seal the gap between the two blades, further improve the sealing performance, improve the sealing effect of the smoke exhaust fire damper, and avoid air leakage.

[0028] like Figure 8 As shown, in this embodiment, a bushing 28 and a first L-shaped sealing spring 29 are provided in the middle of the blade shaft 2. The bushing 28 is located on the outer circumference of the blade shaft 2. A gap is provided between the bushing 28 and the blade 3. One end of the first L-shaped sealing spring 29 is inserted into the gap between the bushing 28 and the blade 3, and the other end of the first L-shaped sealing spring 29 is attached to the surface of the bushing 28.

[0029] As Figure 9 shown in the embodiment, the blade middle shaft 2 is further provided with a blade fixing piece 22, the blade fixing piece 22 comprises a second shaft sleeve part 221, the second shaft sleeve part 221 is arranged at the outer circumference of the blade middle shaft 2, the upper and lower ends of the second shaft sleeve part 221 are fixedly provided with a connecting plate 222, the connecting plate 222 is fixedly connected with the blade 3 through a screw, the blade 3 is fixedly connected with the blade middle shaft 2 through the blade fixing piece 22, the connecting plate 222 of the blade 3 and the blade fixing piece 22 is fixedly connected through a screw, and it is more convenient to disassemble, replace and maintain.

[0030] In the embodiment, the valve body is provided with a temperature sensor 10.

[0031] The above is only the preferred embodiment of the present application, and for the ordinary skilled in the art, according to the idea of the present application, the specific implementation and application range will be changed, and the content of the specification should not be understood as the limitation of the present application.

Claims

1. A smoke exhaust fire damper with good sealing performance, characterized in that: The utility model provides a valve body, the valve body includes connecting frame, a plurality of blade middle shafts are arranged in the connecting frame, a plurality of blade middle shafts are arranged mutually parallel, a plurality of blade middle shafts are all provided with blade, the left end of connecting frame is provided with fire damper actuator, the middle part of connecting frame is provided with main shaft, the left end of main shaft passes through connecting frame with fire damper actuator and extends to the outside of valve body, the left end of main shaft is connected with control rod, the right end of connecting frame is provided with connecting rod mechanism, the connecting rod mechanism includes connecting rod, the right end of a plurality of blade middle shafts is all provided with blade auxiliary shaft, the left end of blade auxiliary shaft inserts in blade middle shaft and is fixedly connected with blade middle shaft, the right end of main shaft and the right end of a plurality of blade auxiliary shafts are all provided with connecting piece, the connecting rod is provided with a plurality of articulated shafts, a plurality of connecting pieces are articulated with a plurality of articulated shafts correspondingly, the blade includes blade main body, both ends of blade main body are provided with superposition part, the connecting piece includes connecting part and fixed part, the connecting part is articulated with the articulated shaft of connecting rod, the middle part of blade main body is provided with first circular recess, the middle part of fixed part is provided with second circular recess, the first circular recess is aligned with the second circular recess and is arranged at the outer circumference of blade auxiliary shaft, and the fixed part of connecting piece and blade main body are fixedly connected through screw.

2. The fire damper according to claim 1, wherein: The connecting frame is provided with a first fixed point, the connecting rod is provided with a second fixed point, a reset spring is arranged between the connecting frame and the connecting rod, one end of the reset spring is fixedly connected with the first fixed point, and the other end of the reset spring is fixedly connected with the second fixed point.

3. The fire damper according to claim 1, wherein: The connecting part and the fixed part are integrally formed.

4. The fire damper according to claim 1, wherein: The superposition part is provided with a sealing rubber strip, and the sealing rubber strip is made of an elastic material.

5. The fire damper according to claim 1, wherein: The middle part of the blade middle shaft is provided with a first shaft sleeve and a first L-shaped sealing spring plate, the first shaft sleeve is arranged at the outer circumference of the blade middle shaft, a gap is arranged between the first shaft sleeve and the blade, one end of the first L-shaped sealing spring plate is inserted into the gap between the first shaft sleeve and the blade, and the other end of the first L-shaped sealing spring plate is attached to the surface of the first shaft sleeve.

6. The fire damper according to claim 1, wherein: The blade middle shaft is also provided with a blade fixing piece, the blade fixing piece includes a second shaft sleeve part, the second shaft sleeve part is arranged at the outer circumference of the blade middle shaft, connecting plates are fixedly arranged at the upper and lower ends of the second shaft sleeve part, and the connecting plates are fixedly connected with the blade through screws.

7. The fire damper according to claim 1, wherein: A temperature sensor is arranged in the valve body.

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