CN215719598U - Fire-fighting explosion-proof centrifugal fan - Google Patents

Abstract

The application provides an explosion-proof centrifugal fan of fire control belongs to centrifugal fan technical field. The fire-fighting anti-explosion centrifugal fan comprises a fan assembly and a floor shock absorption assembly. The fan subassembly includes box and motor body, motor body with the box is connected, it includes centre gripping fixed establishment and buffer to fall to the ground shock-absorbing assembly, centre gripping fixed establishment is including bearing frame, bracket I and bracket II and compressing tightly the piece, bracket I with bracket II is connected to respectively bear frame bottom both sides, compress tightly the piece and be connected to the carrier top, just the box with motor body respectively by the activity compress tightly in bracket I with bracket II with compress tightly between the piece, the bolster is installed centre gripping fixed establishment bottom. The floor shock absorption assembly can improve the buffering performance of the fan assembly on the basis of being convenient for the quick installation and disassembly of the fan assembly, and the convenience of the explosion-proof fan is improved.

Description

Fire-fighting explosion-proof centrifugal fan

Technical Field

The application relates to the field of centrifugal fans, in particular to a fire-fighting anti-explosion centrifugal fan.

Background

The fire-fighting explosion-proof centrifugal fan is suitable for ventilation or high-temperature smoke discharge of high-rise buildings, underground buildings, tunnels, drying rooms and the like. The device can continuously run for more than 30 minutes at the high temperature of 280 ℃, and can not be damaged after continuously running for 20 hours/time at the medium temperature of 100 ℃. According to the fire-fighting anti-explosion centrifugal fan in the related art, the disassembly and assembly efficiency can not be increased on the basis without the help of external tools, tools such as a wrench are required to be searched to detach bolts for fixing a fan box body and a motor when the box body or the motor is disassembled and assembled for maintenance or replacement, so that the maintenance or replacement convenience of the fan box body and the motor is reduced, a spring damping structure is usually arranged at the bottom of the fire-fighting anti-explosion centrifugal fan in the related art, a spring in the spring damping structure is usually indirectly connected with the fan in a welding or other fastening mode, the quick replacement of a subsequent spring is inconvenient, and the use convenience of the fire-fighting anti-explosion centrifugal fan is influenced.

How to invent a fire-fighting explosion-proof centrifugal fan to improve the problems becomes a problem to be urgently solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In order to compensate for above not enough, the application provides an explosion-proof centrifugal fan of fire control aims at improving the explosion-proof centrifugal fan of fire control among the correlation technique and is not convenient for dismantle and the lower problem of shock-absorbing structure convenience of use.

The embodiment of the application provides an explosion-proof centrifugal fan of fire control, include the fan subassembly and fall to the ground damper assembly.

The fan subassembly includes box and motor body, motor body with the box is connected, it includes centre gripping fixed establishment and buffer to fall to the ground shock-absorbing assembly, centre gripping fixed establishment is including bearing frame, bracket I and bracket II and compressing tightly the piece, bracket I with bracket II is connected to respectively bear frame bottom both sides, compress tightly the piece and be connected to the carrier top, just the box with motor body respectively by the activity compress tightly in bracket I with bracket II with compress tightly between the piece, the bolster is installed centre gripping fixed establishment bottom.

In the implementation process, bracket I and bracket II in the clamping and fixing mechanism are convenient for supporting the box body and the motor body, the box body and the motor body can be clamped and fixed quickly by utilizing the cooperation of the compression piece and bracket I and bracket II, the box body and the motor body can be conveniently disassembled and assembled quickly under the condition without the help of an external fastening tool, the vibration of the explosion-proof fan during use can be reduced by setting the buffer piece, the use safety of the explosion-proof fan is improved, meanwhile, the spring in the buffer piece is convenient for quick replacement, and the use convenience of the buffer piece is improved.

In a specific embodiment, the output end of the motor body is connected with a transmission belt, the transmission belt is further connected with a fan shaft carried by the box body, and the motor body is in transmission connection with the box body through the transmission belt.

In the implementation process, the transmission belt is arranged to facilitate the operation of the fan blade structure inside the motor body control box body.

In a specific embodiment, the pressing member includes a sleeve, a sleeve rod and a movable frame, the sleeve is connected to the top inside the bearing frame, and the sleeve rod is sleeved inside the sleeve.

In a specific embodiment, a sliding cavity is formed in the loop bar, a clamping block is connected in the sliding cavity in a sliding mode, a spring I is fixedly connected between the clamping block and the corresponding sliding cavity, and the side wall of the sleeve penetrates through the clamping hole which is formed in pair and matched with the clamping block.

In a specific embodiment, the outer end of the clamping block is connected with a screw rod, the diameter of the screw rod is smaller than the caliber of the clamping hole, the outer wall of the screw rod is screwed with a nut, and the outer diameter of the nut is larger than the caliber of the clamping hole.

In the implementation process, the arrangement of the screw rod and the nut is convenient for improving the stability of clamping of the clamping block, namely the stability of installing the box body and the motor body is convenient to improve.

In a specific embodiment, the adjustable shelf is connected to the loop bar outer end, the equal fixedly connected with arc clamp plate in adjustable shelf bottom both sides, two arc clamp plate respectively with bracket I with II openings of bracket set up relatively, arc clamp plate with bracket I and II inner walls of bracket all have glued firmly the silica gel heat conduction pad, arc clamp plate with bracket I and II outer walls of bracket all are connected with metal fin.

In the above-mentioned realization process, promote the fixture block towards sliding chamber inside and make spring I compressed, pull down the loop bar immediately after the joint hole on fixture block and sleeve upper portion breaks away from, when the joint hole that fixture block and sleeve bottom were seted up aligns, spring I loses and is pressed the joint hole joint that makes fixture block and sleeve bottom set up fixed, thereby conveniently adjust the adjustable shelf down to suitable position, and make box and motor body pressed from both sides tightly respectively between bracket I and one of them arc clamp plate and bracket II and another arc clamp plate, utilize the silica gel heat conduction pad can absorb heat and cause metal cooling fin department with the heat in box and motor body use, utilize metal cooling fin can discharge the heat that box and motor body gived off.

In a specific embodiment, the bolster is provided with two, two the bolster all includes base, solid fixed cylinder and closing cap and spring II, gu fixed cylinder fixed connection respectively to base upper portion both sides, two the closing cap inner wall all is equipped with the internal thread, two gu fixed cylinder outer wall upper end all is equipped with the external screw thread, the closing cap with gu fixed cylinder is fixed with the help of the cooperation of internal thread and external screw thread, two spring II holds respectively adorn in corresponding the closing cap with between the solid fixed cylinder.

In a specific embodiment, through holes are formed in the two sealing covers in a penetrating mode, the sealing covers are movably connected with piston rods in a penetrating mode through the through holes, the bottom ends of the piston rods extend into the corresponding fixed cylinders, and the top ends of the piston rods are fixed with the bearing frames.

In the above-mentioned realization in-process, can produce vibrations usually in explosion-proof centrifugal fan use, when explosion-proof centrifugal fan takes place vibrations, the piston rod can transmit the shaking force of fan to spring II, the vibrations that produce and the energy of impact when explosion-proof centrifugal fan uses can be absorbed in the compression of II atresss of spring, the probability of explosion-proof centrifugal fan vibrations explosion is taken place in the reduction, when II long-time use emergence elastic fatigue's of spring condition, with the closing cap back-off solid fixed cylinder, it just can take out spring II fast to change to shift up the piston rod afterwards, change efficiency is higher, convenience in use promotes.

In a specific embodiment, this explosion-proof centrifugal fan of fire control still includes ready-package air inlet and filters piece, ready-package air inlet filters piece includes circular frame spare and filter screen, circular frame spare includes circle frame and sealing rubber circle, the filter screen is connected to the circle frame inner wall, sealing rubber circle glue with extremely circle frame outer wall.

In the implementation process, the tightness of the connection between the circular frame and the inner wall of the self-contained air inlet of the box body can be improved by utilizing the sealing rubber ring, and the probability that dust enters the interior of the explosion-proof fan from the gap between the circular frame and the inner wall of the self-contained air inlet of the box body is reduced.

In a specific embodiment, the installation cavity has all been seted up to circle frame outer wall both sides, two equal sliding connection has the inserted block in the installation cavity, two the installation cavity with correspond still fixedly connected with spring III between the inserted block, the jack has been seted up respectively from the air intake inner wall both sides in area to the box, two the inserted block is pegged graft fixedly with the jack that corresponds, two still be fixed with on the inserted block and extend to the shifting block in the installation cavity outside.

In the above-mentioned realization in-process, before explosion-proof centrifugal fan uses, get into its life of the inside influence of explosion-proof fan in order to reduce dust or particle impurity, stir two shifting blocks and drive the inside removal in two jacks orientation corresponding installation cavity, peg graft into the box from the air intake department in area with the circle frame, when two inserts and the jack alignment that corresponds, loosen two shifting blocks and rely on spring III's resilience to make the insert fixed with the jack, conveniently filter the piece with the ready-package air inlet promptly and install in the air intake of box from the area, also make things convenient for the dismantlement of follow-up ready-package air inlet filter piece to change or clear up.

Drawings

In order to more clearly explain the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic structural view of a fire-fighting explosion-proof centrifugal fan provided by an embodiment of the application;

FIG. 2 is a schematic structural view of a floor suspension assembly according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural view of a clamping fixture according to an embodiment of the present disclosure;

fig. 4 is a schematic structural view of a pressing member according to an embodiment of the present disclosure;

fig. 5 is a schematic diagram of a partially enlarged structure at a in fig. 4 according to an embodiment of the present disclosure;

fig. 6 is a schematic structural view of a buffer according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a connection relationship between a fixed cylinder and a piston rod according to an embodiment of the present disclosure;

FIG. 8 is a schematic diagram illustrating an external connection between a housing and a quick-fit air inlet filter according to an embodiment of the present disclosure;

fig. 9 is a schematic view of a partial cross-sectional structure at a-a in fig. 8 according to an embodiment of the present disclosure.

In the figure: 10-a fan assembly; 110-a box body; 120-a motor body; 20-a floor cushioning assembly; 210-a clamping fixture; 211-a carrier; 212-bracket I; 213-bracket II; 214-a compression member; 2141-a sleeve; 2142-a loop bar; 2143-a movable frame; 2144-metal heat sink; 2145-a fixture block; 2146-spring I; 2147-a snap-fit hole; 2148-a nut; 2149-an arc shaped platen; 220-a buffer; 221-a base; 222-a stationary cartridge; 223-sealing cover; 224-spring ii; 225-a piston rod; 30-a quick-assembly air inlet filtering piece; 310-a circular frame member; 311-round frame; 312-sealing rubber ring; 313-a mounting cavity; 314-an insert block; 315-spring III; 316-a shifting block; 320-a filter screen.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting.

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

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1-9, the present application provides a centrifugal fan for fire protection and explosion protection, which comprises a fan assembly 10 and a ground shock-absorbing assembly 20.

The fan assembly 10 is an explosion-proof centrifugal fan in the prior art, and is suitable for ventilation or high-temperature smoke discharge of high-rise buildings, underground buildings, tunnels, drying rooms and the like; the floor shock absorption assembly 20 can improve the buffering performance of the fan assembly 10 on the basis of being convenient for the fan assembly to be rapidly installed and detached, and the use convenience of the explosion-proof fan is improved.

Referring to fig. 1, the blower assembly 10 includes a case 110 and a motor body 120, the motor body 120 is connected to the case 110, wherein an output end of the motor body 120 is connected to a transmission belt, and further, an output end of the motor body 120 is connected to a pulley through a coupling, and one end of the transmission belt is tensioned on the pulley. The transmission belt is also connected with a fan shaft carried by the box body 110, furthermore, the outer end of the fan shaft carried by the box body 110 is also connected with a belt wheel, and the other end of the transmission belt is tensioned with another belt wheel. The motor body 120 is in transmission connection with the box body 110 through a transmission belt, and the motor body 120 can control the fan blade structure inside the box body 110 to operate conveniently by means of the transmission belt.

Referring to fig. 1, 2, 3, 4, 5, 6, and 7, the floor shock absorbing assembly 20 includes a clamping fixing mechanism 210 and a buffer member 220, the clamping fixing mechanism 210 includes a supporting frame 211, a bracket i 212, a bracket ii 213, and a pressing member 214, the bracket i 212 and the bracket ii 213 are respectively connected to two sides of the bottom of the supporting frame 211 through screws, and the supporting frame i 212 and the bracket ii 213 in the clamping fixing mechanism 210 are used to support the box 110 and the motor body 120. Pressing member 214 is connected to and bears the frame 211 top, and box 110 and motor body 120 are compressed tightly between bracket I212 and bracket II 213 and pressing member 214 by the activity respectively, and is concrete, utilize the cooperation that pressing member 214 and bracket I212 and bracket II 213 to make box 110 and motor body 120 fixed by quick centre gripping, make things convenient for box 110 and motor body 120 to realize quick dismouting under the condition of not with the help of external fastening tool. The buffer member 220 is installed at the bottom of the clamping and fixing mechanism 210, wherein the shock of the explosion-proof fan during use can be reduced through the arrangement of the buffer member 220, and the use safety of the explosion-proof fan is improved.

When this application specifically sets up, it includes sleeve 2141 and loop bar 2142 and adjustable shelf 2143 to compress tightly piece 214, sleeve 2141 can select to locate inside sleeve 2141 through screwed connection to bear frame 211, loop bar 2142 cover, the slip chamber has been seted up on loop bar 2142, slip intracavity sliding connection has fixture block 2145, all fixed welding has spring I2146 between fixture block 2145 and the slip chamber that corresponds, sleeve 2141 lateral wall runs through in pairs and sets up the joint hole 2147 with fixture block 2145 looks adaptation, the welding of fixture block 2145 outer end has the screw rod, the diameter of screw rod is less than the bore of joint hole 2147, the outer wall of screw rod has connect soon nut 2148, the external diameter of nut 2148 is greater than the bore of joint hole 2147, wherein, the setting that utilizes screw rod and nut 2148 is convenient for promoting the stability of fixture block 2145 joint, conveniently promote the stability that box 110 and motor body 120 installed promptly. The movable frame 2143 is connected to the outer end of the loop bar 2142 through screws, two sides of the bottom of the movable frame 2143 are fixedly connected with arc-shaped pressing plates 2149 through screws, the two arc-shaped pressing plates 2149 are respectively arranged opposite to the openings of the bracket I212 and the bracket II 213, the inner walls of the arc-shaped pressing plates 2149, the bracket I212 and the bracket II 213 are respectively glued with inherent silica gel heat conducting pads through strong glue, the outer walls of the arc-shaped pressing plates 2149, the bracket I212 and the bracket II 213 are respectively connected with metal radiating fins 2144, wherein the clamping block 2145 is pushed towards the inside of the sliding cavity to compress the spring I2146, the loop bar 2142 is pulled down immediately after the clamping block 2145 is separated from the clamping hole 2147 on the upper portion of the sleeve 2141, when the clamping block 2145 is aligned with the clamping hole 2147 formed on the bottom of the sleeve 2141, the spring I2146 loses the compression force to clamp the clamping hole 2147 formed on the bottom of the sleeve 2141, so that the clamping block 2145 is clamped and the clamping hole 2147 is fixed, the movable frame 2143 is conveniently adjusted to a proper position, and the box body 110 and the motor body 120 are clamped between the bracket 212 and one of the bracket I and the bracket II 2149 And between the bracket ii 213 and the other arc-shaped pressing plate 2149, the silicone heat conducting pad can absorb heat in the using process of the box body 110 and the motor body 120 and guide the heat to the metal heat sink 2144, and the metal heat sink 2144 can exhaust the heat dissipated by the box body 110 and the motor body 120, and it should be noted that all the metal heat sinks 2144 are respectively integrally formed with the arc-shaped pressing plate 2149, the bracket i 212 and the outer wall of the bracket ii 213.

When the anti-explosion centrifugal fan is specifically arranged, two buffer parts 220 are arranged, each of the two buffer parts 220 comprises a base 221, a fixed cylinder 222, a sealing cover 223 and a spring II 224, the fixed cylinders 222 are respectively fixedly connected to two sides of the upper portion of the base 221 through screws, inner walls of the two sealing covers 223 are respectively provided with inner threads, outer threads are respectively arranged at the upper ends of the outer walls of the two fixed cylinders 222, the sealing covers 223 and the fixed cylinders 222 are fixed through matching of the inner threads and the outer threads, the two springs II 224 are respectively accommodated between the corresponding sealing covers 223 and the fixed cylinders 222, through holes are respectively formed in the two sealing covers 223 in a penetrating mode, the sealing covers 223 are respectively movably connected with piston rods 225 through penetrating through the through holes, the bottom ends of the piston rods 225 extend into the corresponding fixed cylinders 222, the top ends of the piston rods 225 are respectively welded and fixed with a bearing frame 211, wherein the buffer parts can generally generate vibration in the using process of the anti-explosion centrifugal fan, the energy of the vibration and impact generated in the using process of the anti-explosion centrifugal fan can be absorbed by utilizing the stress compression of the springs II 224 in the buffer parts 220, the probability that explosion-proof centrifugal fan vibrations explode takes place in the reduction, when II 224 of spring use the condition of taking place elastic fatigue for a long time, unscrew fixed cylinder 222 with closing cap 223, move up piston rod 225 afterwards and just can take out II 224 of spring fast and change, change efficiency is higher, and the convenience in utilization promotes.

Referring to fig. 1, 8 and 9, the fire-fighting explosion-proof centrifugal fan further comprises a quick-mounting air inlet filtering member 30, the quick-mounting air inlet filtering member 30 comprises a circular frame member 310 and a filtering net 320, the circular frame member 310 comprises a circular frame 311 and a sealing rubber ring 312, and the filtering net 320 is connected to the inner wall of the circular frame 311, wherein the connection mode of the circular frame 311 and the filtering net 320 is the prior art, and is not described herein again. The sealing rubber ring 312 is fixed to the outer wall of the circular frame 311 through a strong adhesive, wherein the tightness of connection between the circular frame 311 and the inner wall of the air inlet of the case 110 can be improved by the arrangement of the sealing rubber ring 312, and the probability that dust enters the interior of the explosion-proof fan from the gap between the circular frame 311 and the inner wall of the air inlet of the case 110 is reduced. Mounting cavities 313 are formed in two sides of the outer wall of the circular frame 311, inserting blocks 314 are connected in the two mounting cavities 313 in a sliding mode, springs III 315 are fixedly welded between the two mounting cavities 313 and the corresponding inserting blocks 314, inserting holes are formed in two sides of the inner wall of an air inlet formed in the box body 110, the two inserting blocks 314 are fixedly inserted into the corresponding inserting holes, and shifting blocks 316 extending to the outer sides of the mounting cavities 313 are further fixed on the two inserting blocks 314 through screws, wherein before the explosion-proof centrifugal fan is used, in order to reduce dust or particle impurities entering the explosion-proof fan and influence the service life of the explosion-proof fan, the two shifting blocks 316 are shifted to drive the two inserting blocks 314 to move towards the inner parts of the corresponding mounting cavities 313, the circular frame 311 is inserted into the air inlet formed in the box body 110, when the two inserting blocks 314 are aligned with the corresponding inserting holes, the two shifting blocks 316 are loosened and the inserting blocks 314 are fixed with the inserting holes by means of the restoring capacity of the springs III 315, the quick-mounting air inlet filtering member 30 is conveniently mounted at the air inlet of the box body 110, and the subsequent quick-mounting air inlet filtering member 30 is convenient to detach, replace or clean.

The working principle of the fire-fighting explosion-proof centrifugal fan is as follows: when the heat sink is used, firstly, the box body 110 and the motor body 120 are respectively placed on the corresponding bracket I212 and bracket II 213, then the screw cap 2148 is screwed down and the fixture block 2145 is pushed towards the inside of the sliding cavity, so that the spring I2146 is compressed, when the fixture block 2145 is separated from the clamping hole 2147 on the upper portion of the sleeve 2141, the sleeve rod 2142 is immediately pulled down, when the fixture block 2145 is aligned with the clamping hole 2147 formed in the bottom of the sleeve 2141, the spring I2146 loses the pressure to clamp and fix the fixture block 2145 and the clamping hole 2147 formed in the bottom of the sleeve 2141, so that the movable frame 2143 is conveniently adjusted down to a proper position, the box body 110 and the motor body 120 are respectively clamped between the bracket I212 and one of the arc-shaped pressing plates 2149, the bracket II 213 and the other arc-shaped pressing plate 2149, and heat can be absorbed and led to the metal heat sink 2144 by the silica gel heat conduction pad in the use process of the box body 110 and the motor body 120, the metal radiating fins 2144 can discharge heat dissipated by the box body 110 and the motor body 120, before the explosion-proof centrifugal fan is used, in order to reduce the influence on the service life caused by the fact that dust or particle impurities enter the explosion-proof fan, the two shifting blocks 316 are shifted to drive the two inserting blocks 314 to move towards the inner parts of the corresponding mounting cavities 313, the round frame 311 is inserted into an air inlet of the box body 110, when the two inserting blocks 314 are aligned with corresponding jacks, the two shifting blocks 316 are loosened and the inserting blocks 314 are fixed with the jacks by means of the restoring capability of the springs III 315, namely, the quick-assembly air inlet filter element 30 is conveniently mounted at the air inlet of the box body 110, the subsequent quick-assembly air inlet filter element 30 is conveniently detached and replaced or cleaned, the buffer element is usually vibrated in the using process of the explosion-proof centrifugal fan, the spring II 224 in the spring 220 is stressed and compressed to absorb the vibration and impact energy generated when the explosion-proof centrifugal fan is used, the probability that explosion-proof centrifugal fan vibrations explode takes place in the reduction, when II 224 of spring use the condition of taking place elastic fatigue for a long time, unscrew fixed cylinder 222 with closing cap 223, move up piston rod 225 afterwards and just can take out II 224 of spring fast and change, change efficiency is higher, and the convenience in utilization promotes.

It should be noted that the specific model specifications of the spring i 2146, the spring ii 224, the piston rod 225, the spring iii 315, and the filter screen 320 need to be determined by model selection according to the actual specification of the device, and the specific model selection calculation method adopts the prior art in the field, and therefore details are not described again.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. An explosion-proof centrifugal fan of fire control, which is characterized by comprising

The fan assembly (10), the fan assembly (10) comprises a box body (110) and a motor body (120), and the motor body (120) is connected with the box body (110);

fall to the ground shock-absorbing component (20), fall to the ground shock-absorbing component (20) including centre gripping fixed establishment (210) and buffer (220), centre gripping fixed establishment (210) including bearing frame (211), bracket I (212) and bracket II (213) and compress tightly piece (214), bracket I (212) with bracket II (213) are connected to respectively bear frame (211) bottom both sides, it is connected to compress tightly piece (214) bear frame (211) top, just box (110) with motor body (120) respectively by the activity compress tightly in bracket I (212) with bracket II (213) with compress tightly between piece (214), install buffer (220) centre gripping fixed establishment (210) bottom.

2. The fire-fighting explosion-proof centrifugal fan as claimed in claim 1, wherein the output end of the motor body (120) is connected with a transmission belt, the transmission belt is further connected with a fan shaft of the box body (110), and the motor body (120) is in transmission connection with the box body (110) through the transmission belt.

3. The fire-fighting explosion-proof centrifugal fan as claimed in claim 1, wherein the pressing member (214) comprises a sleeve (2141), a sleeve rod (2142) and a movable frame (2143), the sleeve (2141) is connected to the top of the inside of the bearing frame (211), and the sleeve rod (2142) is sleeved inside the sleeve (2141).

4. The fire-fighting explosion-proof centrifugal fan as claimed in claim 3, wherein the loop bar (2142) is provided with a sliding cavity, a clamping block (2145) is slidably connected in the sliding cavity, a spring I (2146) is fixedly connected between the clamping block (2145) and the corresponding sliding cavity, and the side wall of the sleeve (2141) is provided with a pair of clamping holes (2147) which are matched with the clamping block (2145) in a penetrating manner.

5. The fire-fighting explosion-proof centrifugal fan as claimed in claim 4, wherein a screw is connected to an outer end of the clamping block (2145), the diameter of the screw is smaller than the diameter of the clamping hole (2147), a nut (2148) is screwed to an outer wall of the screw, and the outer diameter of the nut (2148) is larger than the diameter of the clamping hole (2147).

6. The fire-fighting explosion-proof centrifugal fan according to claim 5, characterized in that the movable frame (2143) is connected to the outer end of the loop bar (2142), arc-shaped pressing plates (2149) are fixedly connected to both sides of the bottom of the movable frame (2143), the two arc-shaped pressing plates (2149) are respectively arranged opposite to the openings of the bracket I (212) and the bracket II (213), silica gel heat-conducting pads are adhered to the inner walls of the arc-shaped pressing plates (2149), the bracket I (212) and the bracket II (213), and metal cooling fins (2144) are connected to the outer walls of the arc-shaped pressing plates (2149), the bracket I (212) and the bracket II (213).

7. The fire-fighting explosion-proof centrifugal fan according to claim 1, wherein two buffering members (220) are provided, each of the two buffering members (220) comprises a base (221), a fixed cylinder (222), a sealing cover (223) and a spring II (224), the fixed cylinder (222) is fixedly connected to two sides of the upper portion of the base (221), each of two sealing covers (223) is provided with an internal thread, each of two fixed cylinders (222) is provided with an external thread at the upper end of the outer wall, the sealing cover (223) and the fixed cylinder (222) are fixed by means of the matching of the internal thread and the external thread, and the two springs II (224) are accommodated between the corresponding sealing cover (223) and the fixed cylinder (222).

8. The fire-fighting explosion-proof centrifugal fan according to claim 7, wherein through holes are formed in the two sealing covers (223) in a penetrating manner, the sealing covers (223) are movably connected with piston rods (225) in a penetrating manner through the through holes, the bottom ends of the piston rods (225) extend into the corresponding fixed cylinders (222), and the top ends of the piston rods (225) are fixed with the bearing frame (211).

9. A fire fighting explosion proof centrifugal fan according to claim 1 further comprising a ready-to-mount intake filter element (30), the ready-to-mount intake filter element (30) comprising a circular frame element (310) and a filter screen (320), the circular frame element (310) comprising a circular frame (311) and a sealing rubber ring (312), the filter screen (320) being connected to the inner wall of the circular frame (311), the sealing rubber ring (312) being adhered to the outer wall of the circular frame (311).

10. The fire-fighting explosion-proof centrifugal fan according to claim 9, wherein mounting cavities (313) are formed in both sides of the outer wall of the circular frame (311), plug blocks (314) are slidably connected in both of the two mounting cavities (313), springs (iii) (315) are fixedly connected between the two mounting cavities (313) and the corresponding plug blocks (314), jacks are formed in both sides of the inner wall of an air inlet of the box body (110) respectively, the two plug blocks (314) are fixedly connected with the corresponding jacks in an inserted manner, and shifting blocks (316) extending to the outer side of the mounting cavities (313) are further fixed on the two plug blocks (314).

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