CN213574716U

CN213574716U - Anti-surge device for axial flow fan

Info

Publication number: CN213574716U
Application number: CN202022271073.8U
Authority: CN
Inventors: 王苹
Original assignee: Guangzhou Botai Machinery Technology Co ltd
Current assignee: Guangzhou Botai Machinery Technology Co ltd
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2021-06-29
Anticipated expiration: 2030-10-13

Abstract

The utility model discloses an anti-surge device for axial fan, including setting up at the left anti-surge device body of axial fan, the air outlet intercommunication of anti-surge device body is fixed with the expansion hose, and the right-hand member of expansion hose and axial fan's air intake intercommunication and bonding are fixed, and axial fan's left side bottom fixed mounting has the fixing base, and the left side movable contact of fixing base has the U-shaped mounting panel, and the right side fixed mounting of U-shaped mounting panel has first fixture block, and the right side of first fixture block is established to the toper structure. The utility model relates to a rationally, be convenient for alleviate the impact to the anti-surge device body, reduce the risk that causes the anti-surge device body to damage because of the impact is great, be convenient for take off the anti-surge device body fast and overhaul the operation, need not improve work efficiency with the help of any instrument, and the setting of T shape screw rod, can take off whole device and install and use on other axial fan, improve its utilization ratio, satisfy the user demand.

Description

Anti-surge device for axial flow fan

Technical Field

The utility model relates to an anti-surge equipment technical field especially relates to an anti-surge device for axial fan.

Background

The surge-proof device is provided with an anti-surge line according to the fact that a surge line is downwards moved by the fan, in addition, an anti-surge alarm line with a higher working condition is arranged below the anti-surge line, a surge alarm line is arranged above the anti-surge line, when a fan operation working condition point reaches the line, an acousto-optic alarm is sent out, the surge line and the anti-surge line are subjected to temperature compensation considering that the performance of the fan is greatly changed along with the air inlet condition, when the environmental temperature is increased, the actual surge line and the anti-surge line are not superposed with the curve of a microcomputer monitoring picture any more and move downwards, so that the requirements of the fan performance and the anti-surge line setting are met, the anti-surge effect is achieved, and the application number is obtained through retrieval: 201721026146.9, discloses a one-way anti-surge ring structure for one-way axial flow fan and a two-way anti-surge ring structure for reversible axial flow fan, including anti-surge ring, moving blade, casing, anti-surge ring welds in the casing, be located the moving blade inlet end front side, the moving blade is rotatory around its axle center in the casing, the two-way anti-surge ring of anti-surge ring structure of reversible axial flow fan is placed in the both sides of moving blade, anti-surge ring includes guide vane and rectifier ring, the moving blade that guide vane gas outlet apart from moving blade air inlet 15 ~ 25%, the height is 8 ~ 12% of moving blade height, axial length is 40 ~ 60% of chord length, the tangent line of guide vane is certain angular relationship with moving blade inlet angle direction, guide vane quantity is 1 with moving blade quantity: 3 or 1:4, eliminates the existence of surge, reduces the material cost and the processing cost compared with the original other types of anti-surge devices, reduces the pressure loss at the same time, and is a novel energy-saving safe anti-surge axial flow fan.

The surge phenomenon of axial fan has been solved to the anti-surge device in the above-mentioned patent, and its anti-surge device is mostly through a plurality of bolt fixed mounting in axial fan's air intake department, it has the shortcoming of being not convenient for take off fast and overhaul through the mode of bolt fastening, need accomplish the dismouting with the help of the instrument, work efficiency is low, and anti-surge device's protecting effect is poor, it is at the in-process that uses, often cause the risk of damage because of the great collision force in the external world, can not satisfy the user demand, therefore we have provided an anti-surge device for axial fan and have been used for solving above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an anti-surge device for an axial flow fan.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an anti-surge device for an axial flow fan comprises an anti-surge device body arranged on the left side of the axial flow fan, wherein an air outlet of the anti-surge device body is communicated and fixed with a flexible hose, the right end of the flexible hose is communicated with an air inlet of the axial flow fan and is fixedly bonded with the air inlet, the bottom of the left side of the axial flow fan is fixedly provided with a fixed seat, the left side of the fixed seat is movably contacted with a U-shaped mounting plate, the right side of the U-shaped mounting plate is fixedly provided with a first clamping block, the right side of the first clamping block is of a conical structure, the fixed seat is movably sleeved on the first clamping block, the fixed seat is fastened on the first clamping block in a threaded manner, fixed blocks are fixedly arranged at the top of the left side and the bottom of the left side of the U-shaped mounting plate, a first positioning rod is fixedly arranged between the right side of the fixed block and, the first spring is movably sleeved on the corresponding first positioning rod, the bottom of the anti-surge device body is fixedly provided with an L-shaped mounting rod, the right end of the L-shaped mounting rod is fixedly provided with a second clamping block, the right side of the second clamping block is arranged to be in a conical structure, the left side of the movable plate is provided with a clamping hole, the second clamping block is movably clamped in the clamping hole, the right side of the movable plate is fixedly provided with a fixed plate, the left side of the fixed plate is fixedly provided with a third clamping block, the left side of the third clamping block is arranged to be in a conical structure, the second clamping block is movably sleeved on the third clamping block, the bottom of the second clamping block is provided with a clamping groove, a T-shaped clamping rod is movably clamped in the clamping groove, the right side of the movable plate is provided with a first through hole with an opening at the front side, the bottom of the T-shaped clamping rod extends into the first through hole, two second, a second spring is fixedly mounted between the bottom of the T-shaped clamping rod and the inner wall of the bottom of the first through hole, a push rod is fixedly mounted on the front side of the T-shaped clamping rod, and the front end of the push rod extends to the front side of the U-shaped mounting plate.

Preferably, a first rectangular groove is formed in the left side of the fixing seat, the inner wall of the first rectangular groove is in movable contact with the outer side of the first clamping block, a threaded groove is formed in the bottom of the first clamping block, a T-shaped screw rod is sleeved in the threaded groove in a sleeved mode, the bottom of the T-shaped screw rod extends to the lower portion of the fixing seat, and the fixing seat is sleeved on the T-shaped screw rod in a threaded mode.

Preferably, a second rectangular groove is formed in the right side of the second clamping block, and the inner wall of the second rectangular groove is in movable contact with the outer side of the third clamping block.

Preferably, two rectangular holes are formed in the inner wall of the bottom of the T-shaped clamping rod, and the inner walls of the rectangular holes are in sliding connection with the outer sides of the corresponding second positioning rods.

Preferably, a through hole communicated with the first through hole is formed in the inner wall of the bottom of the clamping hole, and the inner wall of the through hole is in sliding connection with the outer side of the T-shaped clamping rod.

Preferably, the left side of fixed block bonds and is fixed with first elasticity crashproof pad, and the right side of fixed plate bonds and is fixed with second elasticity crashproof pad.

Preferably, the air inlet of the axial flow fan is fixedly bonded with an annular male magic tape, the right end of the telescopic hose is fixedly bonded with an annular female magic tape, and the annular male magic tape and the annular female magic tape are bonded together.

Compared with the prior art, the beneficial effects of the utility model are that:

through the anti-surge device body, the fixed seat, the U-shaped mounting plate, the first clamping block, the T-shaped screw, the movable plate, the fixed block, the first positioning rod, the first spring, the clamping hole, the second clamping block, the fixed plate, the third clamping block, the clamping groove, the T-shaped clamping rod, the first through hole, the second positioning rod, the second spring, the push rod and the L-shaped mounting rod, the telescopic hose is matched, when the anti-surge device body is impacted by an object, the anti-surge device body is driven to move rightwards, the telescopic hose is compressed when the anti-surge device body moves rightwards, the anti-surge device body drives the movable plate to move rightwards on the two first positioning rods through the L-shaped mounting rod, the second clamping block and the fixed plate, the two first springs are compressed, under the elastic force of the first springs, the impact force to the anti-surge device body is relieved, when the anti-surge device body needs to be taken, the push rod is pushed downwards to drive the T-shaped clamping rod to move out of the clamping groove and compress the second spring, then the anti-surge device body is pulled leftwards to drive the second clamping block to move out of the clamping hole, meanwhile, the anti-surge device body drives the annular female magic tape and the annular male magic tape to separate through the flexible hose, at the moment, the anti-surge device body can be taken down for maintenance operation, after the maintenance is finished, the annular male magic tape and the annular female magic tape are adhered, the clamping hole is aligned with the second clamping block, the anti-surge device body is pushed rightwards to drive the second clamping block to gradually move into the clamping hole, when the right side of the second clamping block moves to be contacted with the left side of the fixing plate, the second clamping block is sleeved on the third clamping block in a sliding mode, the downward thrust on the push rod is released at the moment, the elastic force of the second spring is reset to drive the T-shaped clamping rod to move upwards and gradually into the clamping groove, and therefore the anti-surge device body is installed.

The utility model relates to a rationally, be convenient for alleviate the impact to the anti-surge device body, reduce the risk that causes the anti-surge device body to damage because of the impact is great, be convenient for take off the anti-surge device body fast and overhaul the operation, need not improve work efficiency with the help of any instrument, and the setting of T shape screw rod, can take off whole device and install and use on other axial fan, improve its utilization ratio, satisfy the user demand.

Drawings

Fig. 1 is a schematic cross-sectional view of an anti-surge device for an axial flow fan according to the present invention;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

fig. 3 is a left side view structural diagram of the anti-surge device body of the anti-surge device for the axial flow fan provided by the present invention.

In the figure: the surge protection device comprises an anti-surge device body 1, a fixed seat 2, a U-shaped mounting plate 3, a first clamping block 4, a T-shaped screw rod 5, a moving plate 6, a fixed block 7, a first positioning rod 8, a first spring 9, a clamping hole 10, a second clamping block 11, a fixed plate 12, a third clamping block 13, a clamping groove 14, a T-shaped clamping rod 15, a first through hole 16, a second positioning rod 17, a second spring 18, a push rod 19, a mounting rod 20L and a telescopic hose 21.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, an anti-surge device for an axial flow fan comprises an anti-surge device body 1 arranged on the left side of the axial flow fan, an air outlet of the anti-surge device body 1 is communicated and fixed with a flexible hose 21, the right end of the flexible hose 21 is communicated and bonded and fixed with an air inlet of the axial flow fan, the left bottom of the axial flow fan is fixedly provided with a fixed seat 2, the left side of the fixed seat 2 is movably contacted with a U-shaped mounting plate 3, the right side of the U-shaped mounting plate 3 is fixedly provided with a first clamping block 4, the right side of the first clamping block 4 is provided with a conical structure, the fixed seat 2 is movably sleeved on the first clamping block 4, the fixed seat 2 is fastened on the first clamping block 4 by screw threads, the left top and the left bottom of the U-shaped mounting plate 3 are both fixedly provided with fixed blocks 7, a moving plate 6 is slidably sleeved on the two first positioning rods 8, two first springs 9 are fixedly arranged between the right side of the moving plate 6 and the inner wall of the right side of the U-shaped mounting plate 3, the first springs 9 are movably sleeved on the corresponding first positioning rods 8, an L-shaped mounting rod 20 is fixedly arranged at the bottom of the anti-surge device body 1, a second fixture block 11 is fixedly arranged at the right end of the L-shaped mounting rod 20, the right side of the second fixture block 11 is of a conical structure, a clamping hole 10 is formed in the left side of the moving plate 6, the second fixture block 11 is movably clamped in the clamping hole 10, a fixing plate 12 is fixedly arranged at the right side of the moving plate 6, a third fixture block 13 is fixedly arranged at the left side of the fixing plate 12, a conical structure is formed in the left side of the third fixture block 13, the second fixture block 11 is movably sleeved on the third fixture block 13, a clamping groove 14 is formed in the bottom, the right side of the movable plate 6 is provided with a first through hole 16 with an opening arranged at the front side, the bottom of the T-shaped clamping rod 15 extends into the first through hole 16, two second positioning rods 17 are fixedly arranged between the top inner wall and the bottom inner wall of the first through hole 16, the T-shaped clamping rod 15 is sleeved on the two second positioning rods 17 in a sliding manner, a second spring 18 is fixedly arranged between the bottom of the T-shaped clamping rod 15 and the bottom inner wall of the first through hole 16, a push rod 19 is fixedly arranged at the front side of the T-shaped clamping rod 15, and the front end of the push rod 19 extends to the front side of the U-shaped mounting plate 3. the anti-surge device has reasonable design, is convenient for relieving the impact force to the anti-surge device body 1, reduces the risk of damaging the anti-surge device body 1 due to the larger impact force, is convenient for rapidly taking down the anti-surge device body 1 for maintenance operation without any tool, improves the working efficiency, can take off whole device and install and use on other axial fan, improve its utilization ratio, satisfy the user demand.

In the utility model, a first rectangular groove is arranged on the left side of a fixed seat 2, the inner wall of the first rectangular groove is movably contacted with the outer side of a first clamping block 4, a thread groove is arranged on the bottom of the first clamping block 4, a T-shaped screw rod 5 is sleeved in the thread groove, the bottom of the T-shaped screw rod 5 extends to the lower part of the fixed seat 2, the thread groove of the fixed seat 2 is sleeved on the T-shaped screw rod 5, a second rectangular groove is arranged on the right side of a second clamping block 11, the inner wall of the second rectangular groove is movably contacted with the outer side of a third clamping block 13, two rectangular holes are arranged on the inner wall of the bottom of the T-shaped clamping rod 15, the inner wall of each rectangular hole is in sliding connection with the outer side of a corresponding second positioning rod 17, a perforation hole 16 is arranged on the inner wall of the bottom of the clamping hole 10, the inner wall of the perforation is in sliding connection with the outer side, the right side bonding of fixed plate 12 is fixed with second elasticity crash pad, and axial fan's air intake department bonding is fixed with annular public magic subsides, and the right-hand member bonding of bellows 21 is fixed with annular female magic subsides, and annular public magic subsides bond with annular female magic subsides mutually, the utility model relates to a rationally, be convenient for alleviate the impact to surge arrester body 1, reduce the risk that causes surge arrester body 1 to damage because of the impact is great, be convenient for take off surge arrester body 1 fast and overhaul the operation, need not be with the help of any instrument, improve work efficiency, and T shape screw rod 5's setting can take off whole device and install and use on other axial fan, improves its utilization ratio, satisfies the user demand.

The working principle is as follows: when the anti-surge device is used, when the anti-surge device body 1 is impacted by an object, the impact force drives the anti-surge device body 1 to move rightwards, the anti-surge device body 1 drives the L-shaped mounting rod 20 to move rightwards, meanwhile, the anti-surge loading body 1 compresses the flexible hose 21, the L-shaped mounting rod 20 drives the second fixture block 11 to move rightwards, the second fixture block 11 drives the moving plate 6 to move rightwards on the two first positioning rods 8 through the fixing plate 12, the moving plate 6 compresses the two first springs 9 while moving, under the action of the elastic force of the first springs 9, the impact force on the anti-surge device body 1 is relieved, and the risk that the anti-surge device body 1 is damaged due to the fact that the impact force is large is reduced;

when the anti-surge device body 1 needs to be taken down for maintenance, the push rod 19 is pushed downwards, the push rod 19 drives the T-shaped clamping rod 15 to slide downwards on the two second positioning rods 17 and compress the second spring 18, the T-shaped clamping rod 15 moves downwards and simultaneously gradually moves out of the clamping groove 14, further the fixation of the second clamping block 11 is removed, then the anti-surge device body 1 is pulled leftwards, the anti-surge device body 1 drives the second clamping block 11 to move out of the clamping hole 10 through the L-shaped mounting rod 20, simultaneously the second clamping block 11 moves downwards from the third clamping block 13, simultaneously the anti-surge device body 1 drives the telescopic hose 21 to move leftwards, the telescopic hose 21 drives the annular female magic tape and the annular male magic tape to separate, at the moment, the anti-surge device body 1 can be taken down for maintenance, after the maintenance is finished, the annular male magic tape is adhered with the annular female magic tape, aligning the clamping hole 10 with the second clamping block 11, pushing the anti-surge device body 1 rightwards, driving the second clamping block 11 to gradually move into the clamping hole 10 through the L-shaped mounting rod 20 while the anti-surge device body 1 moves, when the right side of the second clamping block 11 moves to contact with the left side of the fixing plate 12, the clamping groove 14 is aligned with the T-shaped clamping rod 15, the second clamping block 11 is sleeved on the third clamping block 13 in a sliding manner, the downward thrust on the push rod 19 is released, the second spring 18 in a compressed state resets, the elastic force of the second spring 18 drives the T-shaped clamping rod 15 to gradually move upwards into the clamping groove 14, the T-shaped clamping rod 15 is clamped with the clamping groove 14, so that the anti-surge device body 1 is fixed, the installation of the anti-surge device body 1 is completed, and the T-shaped screw 5 is arranged, the whole device can be taken down and installed on other axial flow fans for use, the utilization rate of the catalyst is improved.

In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An anti-surge device for an axial flow fan comprises an anti-surge device body (1) arranged on the left side of the axial flow fan, and is characterized in that an air outlet of the anti-surge device body (1) is communicated and fixed with a flexible hose (21), the right end of the flexible hose (21) is communicated with an air inlet of the axial flow fan and is fixedly bonded, a fixed seat (2) is fixedly arranged at the bottom of the left side of the axial flow fan, the left side of the fixed seat (2) is movably contacted with a U-shaped mounting plate (3), a first clamping block (4) is fixedly arranged on the right side of the U-shaped mounting plate (3), a conical structure is arranged on the right side of the first clamping block (4), the fixed seat (2) is movably sleeved on the first clamping block (4), the fixed seat (2) is fastened on the first clamping block (4) through threads, and fixed blocks (7) are, a first locating rod (8) is fixedly arranged between the right side of the fixed block (7) and the inner wall of the right side of the U-shaped mounting plate (3), a moving plate (6) is sleeved on the two first locating rods (8) in a sliding manner, two first springs (9) are fixedly arranged between the right side of the moving plate (6) and the inner wall of the right side of the U-shaped mounting plate (3), the first springs (9) are movably sleeved on the corresponding first locating rods (8), an L-shaped mounting rod (20) is fixedly arranged at the bottom of the anti-surge device body (1), a second clamping block (11) is fixedly arranged at the right end of the L-shaped mounting rod (20), the right side of the second clamping block (11) is of a conical structure, a clamping hole (10) is formed in the left side of the moving plate (6), the second clamping block (11) is movably clamped in the clamping hole (10), a fixed plate (12) is fixedly arranged at the right side of the moving plate (6), the left side of a third clamping block (13) is of a conical structure, a second clamping block (11) is movably sleeved on the third clamping block (13), a clamping groove (14) is formed in the bottom of the second clamping block (11), a T-shaped clamping rod (15) is movably clamped in the clamping groove (14), a first through hole (16) with the front side arranged for opening is formed in the right side of a movable plate (6), the bottom of the T-shaped clamping rod (15) extends into the first through hole (16), two second positioning rods (17) are fixedly installed between the inner wall of the top of the first through hole (16) and the inner wall of the bottom of the first through hole (16), the T-shaped clamping rod (15) is slidably sleeved on the two second positioning rods (17), a second spring (18) is fixedly installed between the bottom of the T-shaped clamping rod (15) and the inner wall of the bottom of the first through hole (16), a push rod (19) is fixedly installed on the front side of the T-shaped clamping rod (15), and the front end of the.

2. The surge preventing device for the axial flow fan according to claim 1, wherein a first rectangular groove is formed in the left side of the fixing seat (2), the inner wall of the first rectangular groove is in movable contact with the outer side of the first clamping block (4), a threaded groove is formed in the bottom of the first clamping block (4), a T-shaped screw (5) is sleeved in the threaded groove, the bottom of the T-shaped screw (5) extends to the position below the fixing seat (2), and the fixing seat (2) is sleeved on the T-shaped screw (5) in a threaded manner.

3. The surge preventing device for the axial flow fan according to claim 1, wherein a second rectangular groove is formed in the right side of the second clamping block (11), and the inner wall of the second rectangular groove is in movable contact with the outer side of the third clamping block (13).

4. The surge preventing device for the axial flow fan according to claim 1, wherein two rectangular holes are formed in the inner wall of the bottom of the T-shaped clamping rod (15), and the inner walls of the rectangular holes are slidably connected with the outer sides of the corresponding second positioning rods (17).

5. The surge arrester of claim 1, wherein the inner wall of the bottom of the locking hole (10) is provided with a through hole communicated with the first through hole (16), and the inner wall of the through hole is slidably connected with the outer side of the T-shaped locking rod (15).

6. The surge preventing device for the axial flow fan according to claim 1, wherein a first elastic anti-collision pad is fixedly bonded to the left side of the fixing block (7), and a second elastic anti-collision pad is fixedly bonded to the right side of the fixing block (12).

7. The surge preventing device for the axial flow fan according to claim 1, wherein an annular male magic tape is fixedly bonded at the air inlet of the axial flow fan, an annular female magic tape is fixedly bonded at the right end of the flexible hose (21), and the annular male magic tape and the annular female magic tape are bonded together.