Detection structure of fire-fighting smoke exhaust system

Abstract

The utility model discloses a fire-fighting smoke exhaust system detection structure, which comprises a base, a vent hood and a lifting mechanism, a vent pipe is fixedly arranged at the top of the base, the top end of the vent pipe is fixedly connected with a telescopic pipe, a smoke generator and a fan are arranged in the vent pipe, the vent hood is movably arranged above the base, and the telescopic pipe is fixedly connected with the top end of the vent hood. The ventilation cover is arranged on the base and provided with a funnel-shaped ventilation channel, the bottom of the ventilation cover is fixedly connected with the top of the telescopic pipe, a connecting plate is fixedly arranged on the top of the ventilation cover, a through hole is formed in the connecting plate, a plurality of sealing washers are coaxially arranged above the ventilation cover, and the lifting mechanism is arranged on the top of the base and used for driving the connecting plate to move up and down. Through the arrangement, the multiple sealing washers are coaxially arranged, so that the device can be suitable for detection ports of fire-fighting smoke exhaust systems of various sizes, and the application scene of the structure is widened.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of fire fighting detection, specifically relates to fire smoke exhaust system detection structure. BACKGROUND

[0002] The fire smoke exhaust system is a system that uses mechanical smoke exhaust or natural smoke exhaust to exhaust smoke to the outside of the building. The fire smoke exhaust system is usually composed of multiple interconnected smoke exhaust pipes. After the fire smoke exhaust system is installed, its smoke exhaust effect needs to be detected.

[0003] A fire smoke exhaust system detection device is disclosed in Chinese Patent No. CN211954628U. The fire smoke exhaust system detection device includes a body, a connecting mechanism, a smoke generating mechanism, and a winding mechanism. The connecting mechanism is composed of a flexible hose, a connecting plate, a sealing ring, a support column, an extension rod, and a lock. The flexible hose is fixedly installed on the upper surface of the body, and the connecting plate is fixedly connected to the top of the flexible hose. The upper surface of the connecting plate is fixedly attached with a sealing ring. The above-mentioned scheme uses an extension rod to change the height position of the connecting plate, making it convenient to detect smoke exhaust systems at various heights.

[0004] The above-mentioned scheme needs to use a sealing ring fixed on the connecting plate to connect the connecting plate and the detection port of the smoke exhaust system. However, the diameters of the inspection ports of various smoke exhaust systems are different, which limits the application scenarios of the above-mentioned scheme. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a fire smoke exhaust system detection structure to solve the problem of limited application scenarios in the above-mentioned scheme.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The fire smoke exhaust system detection structure includes a base, a ventilation cover, and a lifting mechanism. The top of the base is fixedly provided with a ventilation pipe, the top end of the ventilation pipe is fixedly connected with an extension pipe, and the ventilation pipe is provided with a smoke generator and a fan. The ventilation cover is movably arranged above the base and has a funnel-shaped ventilation passage. The bottom of the ventilation cover is fixedly connected with the top of the extension pipe, the top of the ventilation cover is fixedly provided with a connecting plate, the connecting plate is provided with a through hole, and the upper part of the ventilation cover is coaxially provided with multiple sealing washers. The lifting mechanism is arranged on the top of the base and is used to drive the connecting plate to move up and down.

[0008] The principle and effect of the technical scheme are as follows:

[0009] The device is moved to below the inspection opening of the fire smoke exhaust system, then the lifting mechanism is driven to lift the connecting plate and extend the telescopic pipe until the bottom wall of the inspection opening abuts against one of the sealing gaskets, the smoke generator generates a large amount of smoke, the fan sends the smoke into the fire smoke exhaust system through the ventilation pipe, the telescopic pipe and the air passage, and the flow of the smoke in the fire smoke exhaust system is observed to detect the smoke exhaust capacity of the fire smoke exhaust system.

[0010] By the above arrangement, the multiple sealing gaskets arranged coaxially enable the device to be applicable to the detection openings of fire smoke exhaust systems of various sizes, and ensure that the smoke in the ventilation pipe flows into the fire smoke exhaust system, thereby solving the problem of limited application scenarios in the prior art.

[0011] In the utility model, still include multiple installation ring, multiple installation ring coaxial arrangement, the outer periphery of each installation ring top is fixedly provided with annular cover plate, the inner periphery of each installation ring bottom is fixedly provided with annular support plate, each sealing gasket is fixedly provided on the top of connecting plate and corresponding support plate, each installation ring can be inserted in the support plate on the adjacent outer side installation ring, the cover plate of each installation ring is placed on the sealing gasket of adjacent outer side support plate, and the cover plate of the outermost installation ring is placed on the connecting plate.According to the size of the detection opening of the fire smoke exhaust system, the installation ring is taken out from inside to outside one by one until the bottom wall of the detection opening of the fire smoke exhaust system can abut against the top of the corresponding sealing gasket, and by the above arrangement, the bottom wall of the inspection opening can abut against one of the sealing gaskets, and the smoke flow rate flowing into the fire smoke exhaust system per unit time can be improved.

[0012] In the utility model, the top of the connecting plate is fixedly provided with a fixed ring outside the through hole, the inner side wall of the fixed ring is provided with a stepped ring groove, and each sealing gasket is fixedly arranged on the top of each level bottom surface of the stepped ring groove.Through the above arrangement, the bottom wall of the inspection opening can abut against one of the sealing gaskets, and the number of parts is simplified.

[0013] In the utility model, the lifting mechanism comprises a first sliding block, a second sliding block and multiple scissor units sequentially hinged from top to bottom, the bottom of the connecting plate is fixedly provided with a guide rod in the transverse direction, the first sliding block is slidably sleeved on the guide rod, and the top of the first sliding block slidably abuts against the connecting plate, the top of the base is rotatably provided with a lead screw in the transverse direction, the second sliding block is rotatably sleeved on the lead screw, and the bottom of the second sliding block slidably abuts against the base, one end of the uppermost scissor unit is rotatably connected with the connecting plate, and the other end is rotatably connected with the first sliding block, one end of the lowermost scissor unit is rotatably connected with the base, and the other end is rotatably connected with the second sliding block.

[0014] The utility model discloses a lifting mechanism is symmetrically provided with two groups on the both sides of ventilating pipe, and the screw rod one end of two lifting mechanisms is fixedly provided with pulley along its axial direction, and the pulley of two is provided with synchronous belt, and the top of base is fixedly provided with motor with one of the screw rod transmission connection.

[0015] The principle and effects of the technical scheme are as follows:

[0016] The motor drives one of the screw rods to rotate, and the synchronous belt is arranged on the pulley at the one end of the two screw rods, thereby driving the other screw rod to rotate, and simultaneously, the base restricts the rotation of the second sliding block, thereby making the two second sliding blocks move along with the corresponding screw rods, when the second sliding block moves, the scissor unit is stretched or contracted, thereby lifting or lowering the height position of the connecting plate, and the first sliding block slides along the guide rod along with the stretching or contraction of the scissor unit.

[0017] Through the above setting, the purpose that the lifting mechanism lifts or lowers the height position of the connecting plate is achieved, and the practicability of the structure is improved.

[0018] In the utility model, the four corners of the bottom of base are concavely provided with sliding groove, and the vertical rod is slidably inserted into the sliding groove, the top wall of sliding groove is rotatably provided with threaded rod, the top of vertical rod is sleeved with the threaded segment of threaded rod, and the bottom of vertical rod is fixedly provided with foma wheel.

[0019] The principle and effects of the technical scheme are as follows:

[0020] The sliding groove restricts the rotation of the vertical rod, thereby making the vertical rod move along the vertical direction along with the rotation of the threaded rod, thereby adjusting the length of the vertical rod extending out of the base, and thereby adjusting the inclination state of the connecting plate, so that the surface of the connecting plate is parallel to the bottom wall of the detection port.

[0021] Through the above setting, the inclination state of the connecting plate can be adjusted, the tightness of the connection between the sealing gasket and the bottom wall of the detection port is improved, and the foma wheel is used to conveniently move and fix the structure.

[0022] In the utility model, the bottom end of ventilating pipe is sleeved with filter screen. Through the above setting, the sundries in the air can be avoided from being blown into the fire smoke exhaust system. ACCOUT OF DRAWINGS

[0023] Figure 1 It is the axonometric view of the utility model embodiment one;

[0024] Figure 2 It is Figure 1 The enlarged view of A in the middle;

[0025] Figure 3 It is the axonometric sectional view of the utility model embodiment one;

[0026] Figure 4This is an exploded view of some components in an embodiment of the present utility model;

[0027] Figure 5 This is an axonometric sectional view of Embodiment 2 of this utility model. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0029] The reference numerals in the accompanying drawings of the instruction manual include: 10, base; 11, lead screw; 111, pulley; 12, synchronous belt; 13, motor; 14, slide groove; 15, vertical rod; 16, threaded rod; 17, fender; 20, ventilation duct; 21, smoke generator; 22, fan; 23, filter screen; 30, telescopic tube; 40, ventilation hood; 41, ventilation duct; 50, connecting plate; 51, through hole; 52, fixing ring; 521, stepped ring groove; 53, mounting ring; 531, cover plate; 532, support plate; 54, guide rod; 60, sealing gasket; 70, lifting mechanism; 71, first slider; 72, second slider; 73, scissor lift unit.

[0030] First embodiment:

[0031] As attached Figures 1-4 As shown, this utility model discloses a fire smoke exhaust system testing structure, including a base 10, a ventilation hood 40, and a lifting mechanism 70. A ventilation pipe 20 is fixedly installed on the top of the base 10, and a telescopic pipe 30 is fixedly connected to the top of the ventilation pipe 20. A smoke generator 21 and a fan 22 are installed inside the ventilation pipe 20. The ventilation hood 40 is movably installed above the base 10 and has a funnel-shaped ventilation channel 41. The bottom of the ventilation hood 40 is fixedly connected to the top of the telescopic pipe 30. A connecting plate 50 is fixedly installed on the top of the ventilation hood 40, and a through hole 51 is provided on the connecting plate 50. Multiple sealing gaskets 60 are coaxially arranged on the top of the ventilation hood 40. The lifting mechanism 70 is located on the top of the base 10 and is used to drive the connecting plate 50 to move up and down.

[0032] In this embodiment, a plurality of mounting rings 53 are also included. The plurality of mounting rings 53 are arranged coaxially. An annular cover plate 531 is fixedly provided on the outer periphery of the top of each mounting ring 53. An annular support plate 532 is fixedly provided on the inner periphery of the bottom of each mounting ring 53. Each sealing gasket 60 is fixedly provided on the top of the connecting plate 50 and the corresponding support plate 532. Each mounting ring 53 can be inserted into the support plate 532 on the adjacent outer mounting ring 53. The cover plate 531 of each mounting ring 53 is placed on the sealing gasket 60 of the adjacent outer support plate 532. The cover plate 531 of the outermost mounting ring 53 is placed on the connecting plate 50.

[0033] In the embodiment, the lifting mechanism 70 comprises a first sliding block 71, a second sliding block 72 and a plurality of scissor units 73 which are sequentially hinged from top to bottom, the bottom of the connecting plate 50 is provided with a guide rod 54 in a transverse and fixed manner, the first sliding block 71 is sleeved on the guide rod 54, and the top of the first sliding block 71 is in sliding abutment with the connecting plate 50, the top of the base 10 is provided with a lead screw 11 in a transverse and rotating manner, the second sliding block 72 is sleeved on the lead screw 11, and the bottom of the second sliding block 72 is in sliding abutment with the base 10, one end of the uppermost scissor unit 73 is rotatably connected with the connecting plate 50, and the other end is rotatably connected with the first sliding block 71, one end of the lowermost scissor unit 73 is rotatably connected with the base 10, and the other end is rotatably connected with the second sliding block 72.

[0034] In the embodiment, the lifting mechanism 70 is symmetrically provided with two groups on both sides of the ventilation pipe 20, one end of the lead screw 11 of the two lifting mechanisms 70 is fixedly provided with a belt pulley 111 in an axial direction, the outer periphery of the two belt pulleys 111 is provided with a synchronous belt 12, and the top of the base 10 is fixedly provided with a motor 13 which is in transmission connection with one of the lead screws 11.

[0035] In the embodiment, the bottom of the base 10 is concavely provided with a sliding groove 14 at four corners, a vertical rod 15 is slidingly inserted into the sliding groove 14, a threaded rod 16 is rotatably penetrated through the top wall of the sliding groove 14, the top of the vertical rod 15 is sleeved on the threaded segment of the threaded rod 16, and the bottom of the vertical rod 15 is fixedly provided with a form wheel 17.

[0036] In the embodiment, the bottom end of the ventilation pipe 20 is sleeved with a filter screen 23.

[0037] The specific implementation process is as follows:

[0038] The device is moved below the inspection opening of the fire smoke exhaust system, then the lifting mechanism 70 is driven to lift the connecting plate 50 and extend the telescopic pipe 30, until the bottom wall of the inspection opening is in abutment with one of the sealing gaskets 60, a large amount of smoke is generated by the smoke generator 21, the fan 22 sends the smoke into the fire smoke exhaust system through the ventilation pipe 20, the telescopic pipe 30 and the air passage 41, and the flow of the smoke in the fire smoke exhaust system is observed to detect the smoke exhaust capacity of the fire smoke exhaust system.

[0039] The motor 13 drives one of the lead screws 11 to rotate, because the synchronous belt 12 is wound on the belt pulleys 111 at one end of the two lead screws 11, the other lead screw 11 is driven to rotate, and because the base 10 limits the rotation of the second sliding block 72, the two second sliding blocks 72 are respectively moved with the corresponding lead screws 11, when the second sliding block 72 is moved, the scissor units 73 are extended or contracted, the height position of the connecting plate 50 is lifted or lowered, and the first sliding block 71 slides along the guide rod 54 with the extension or contraction of the scissor units 73.

[0040] Because the slide groove 14 restricts the rotation of the vertical rod 15, the vertical rod 15 can move vertically as the threaded rod 16 rotates, thereby adjusting the length of the vertical rod 15 extending out of the base 10, and thus adjusting the tilt state of the connecting plate 50 so that the surface of the connecting plate 50 is parallel to the bottom wall of the detection port.

[0041] Second embodiment:

[0042] As attached Figure 5 As shown, the difference between this embodiment and the first embodiment is that: in this embodiment, a fixing ring 52 is fixedly provided on the top of the connecting plate 50 around the through hole 51, and a stepped ring groove 521 is provided on the inner side wall of the fixing ring 52. Each of the sealing gaskets 60 is fixedly provided on the top of each level of the bottom surface of the stepped ring groove 521.

[0043] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A detection structure for a fire smoke evacuation system, characterized by, The utility model provides a smoking device, including: The base top fixedly provided with the ventilation pipe, the ventilation pipe top end fixedly connected with telescopic pipe, ventilation pipe is provided with the smoke generator and the fan; The ventilation cover is movably arranged above the base, and the ventilation cover has a funnel-shaped ventilation channel. The bottom of the ventilation cover is fixedly connected with the top of the telescopic pipe. The top of the ventilation cover is fixedly provided with a connecting plate. The connecting plate is provided with a through hole. A plurality of sealing washers are coaxially arranged above the ventilation cover; The lifting mechanism is arranged on the top of the base and is used to drive the connecting plate to move up and down.

2. The fire smoke control system detection arrangement of claim 1, wherein: The utility model also includes a plurality of mounting rings arranged coaxially. The outer periphery of the top of each mounting ring is fixedly provided with a ring-shaped cover plate. The inner periphery of the bottom of each mounting ring is fixedly provided with a ring-shaped support plate. Each sealing washer is fixedly arranged on the top of the connecting plate and the corresponding support plate. Each mounting ring can be inserted into the support plate on the adjacent outer side mounting ring. The cover plate of each mounting ring is placed on the sealing washer of the adjacent outer side support plate. The cover plate of the outermost mounting ring is placed on the connecting plate.

3. The fire smoke control system detection arrangement of claim 1, wherein: The top of the connecting plate is fixedly provided with a fixed ring outside the through hole. The inner side wall of the fixed ring is provided with a stepped ring groove. Each sealing washer is fixedly arranged on the top of each level bottom surface of the stepped ring groove.

4. The fire smoke control system detection arrangement of claim 2 or 3, wherein: The lifting mechanism includes a first sliding block, a second sliding block, and a plurality of scissor units sequentially hinged from top to bottom. The bottom of the connecting plate is fixedly provided with a guide rod in the transverse direction. The first sliding block is slidingly sleeved on the guide rod, and the top of the first sliding block is in sliding abutment with the connecting plate. The top of the base is rotatably provided with a lead screw in the transverse direction. The second sliding block is sleeved on the lead screw, and the bottom of the second sliding block is in sliding abutment with the base. One end of the uppermost scissor unit is rotatably connected with the connecting plate, and the other end is rotatably connected with the first sliding block. One end of the lowermost scissor unit is rotatably connected with the base, and the other end is rotatably connected with the second sliding block.

5. The fire smoke control system detection arrangement of claim 4, wherein: The lifting mechanism is symmetrically provided with two groups on both sides of the ventilation pipe. One end of the lead screw of each lifting mechanism is fixedly provided with a pulley in the axial direction. The pulleys are externally provided with a synchronous belt. The top of the base is fixedly provided with a motor in transmission connection with one of the lead screws.

6. The fire smoke control system detection arrangement of claim 5, wherein: The top of the base is fixedly provided with a plurality of mounting rings arranged coaxially. The outer periphery of the top of each mounting ring is fixedly provided with a ring-shaped cover plate. The inner periphery of the bottom of each mounting ring is fixedly provided with a ring-shaped support plate. Each sealing washer is fixedly arranged on the top of the connecting plate and the corresponding support plate. Each mounting ring can be inserted into the support plate on the adjacent outer side mounting ring. The cover plate of each mounting ring is placed on the sealing washer of the adjacent outer side support plate. The cover plate of the outermost mounting ring is placed on the connecting plate.

7. The fire smoke control system detection arrangement of claim 6, wherein: The top of the connecting plate is fixedly provided with a fixed ring outside the through hole. The inner side wall of the fixed ring is provided with a stepped ring groove. Each sealing washer is fixedly arranged on the top of each level bottom surface of the stepped ring groove. The lifting mechanism includes a first sliding block, a second sliding block, and a plurality of scissor units sequentially hinged from top to bottom. The bottom of the connecting plate is fixedly provided with a guide rod in the transverse direction. The first sliding block is slidingly sleeved on the guide rod, and the top of the first sliding block is in sliding abutment with the connecting plate. The top of the base is rotatably provided with a lead screw in the transverse direction. The second sliding block is sleeved on the lead screw, and the bottom of the second sliding block is in sliding abutment with the base. One end of the uppermost scissor unit is rotatably connected with the connecting plate, and the other end is rotatably connected with the first sliding block. One end of the lowermost scissor unit is rotatably connected with the base, and the other end is rotatably connected with the second sliding block. The lifting mechanism is symmetrically provided with two groups on both sides of the ventilation pipe. One end of the lead screw of each lifting mechanism is fixedly provided with a pulley in the axial direction. The pulleys are externally provided with a synchronous belt. The top of the base is fixedly provided with a motor in transmission connection with one of the lead screws. The bottom end of the ventilation pipe is sleeved with a filter screen.

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