CN211082329U

CN211082329U - Explosion-proof fan

Info

Publication number: CN211082329U
Application number: CN201921530853.0U
Authority: CN
Inventors: 孙东斌; 袁长檩; 李江波; 张范丽
Original assignee: Shandong Xingheng Environmental Science And Technology Group Co ltd
Current assignee: Xingheng Environmental Technology Group Co ltd
Priority date: 2019-09-11
Filing date: 2019-09-11
Publication date: 2020-07-24
Anticipated expiration: 2029-09-11

Abstract

The utility model belongs to the fan field, especially, explosion-proof fan, it connects on wheel hub through the blade seat of welded mode on with aluminum alloy blade to current aluminum alloy blade, and such connected mode is firm inadequately, explosion-proof fan's blade is easy at weld part fracture problem, the following scheme is proposed at present, which comprises a housing, equal fixed mounting has the link on the top inner wall of casing and the bottom inner wall, one side fixed mounting that two links are close to each other has same motor, the welding has wheel hub on the output shaft of motor, wheel hub's outside contact has four blades, four even grooves have been seted up in wheel hub's the outside, be provided with the blade seat on the blade, even the groove clamps with the blade seat on the corresponding blade mutually, set up on the wheel hub and put the chamber. The utility model discloses the practicality is good, has realized the explosion-proof performance of fan to trade the welded mode into the form that clamps, such connected mode is more firm, can not produce the cracked problem of hookup location.

Description

Explosion-proof fan

Technical Field

The utility model relates to a fan technical field especially relates to an explosion-proof fan.

Background

The explosion-proof fan is applied to places with high combustible gas concentration and ventilation requirements, such as underground coal mines, boiler rooms and the like. The process of the explosion-proof fan requires a rotating part (fan impeller) and does not generate sparks when the rotating part and a shell are in friction under special conditions, so that the serious consequences caused by ignition of combustible gas are avoided. In order to ensure that the impeller and the shell do not generate sparks when in friction, the shell and blades of the impeller are made of aluminum alloy materials.

At present, the blade seat of the aluminum alloy blade is connected to the hub in a welding mode, the connection mode is not firm enough, and the blade of the explosion-proof fan is easy to break at the welding part.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving and having the blade seat that the aluminum alloy blade is on connecting aluminum alloy blade through the welded mode among the prior art on wheel hub, and such connected mode is firm inadequately, and the blade of explosion-proof fan is easy at weld part fracture shortcoming, and the explosion-proof fan who proposes.

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

an explosion-proof fan comprises a casing, wherein connecting frames are fixedly arranged on the inner wall of the top and the inner wall of the bottom of the casing, one side of the two connecting frames, which is close to each other, is fixedly provided with a motor, a hub is welded on an output shaft of the motor, the outer side of the hub is contacted with four blades, the outer side of the hub is provided with four connecting grooves, the blades are provided with blade seats, the blades and the blade seats are processed by adopting an integral forming process, the connecting grooves are clamped with the blade seats on the corresponding blades, a placing cavity is arranged on the hub, a clamping plate hole is arranged between the placing cavity and the connecting grooves, a clamping plate is slidably arranged in the clamping plate hole, one side of the blade seat is provided with a clamping groove, the clamping plate is clamped with the clamping groove, four side plates are welded on the inner wall of one side of the placing cavity, which is far away from the blade seats, a rectangular groove, the other end of spring welds on rectangular channel keeps away from one side inner wall of rectangular channel open-ended, places the chamber and has seted up changeing the hole on keeping away from one side inner wall of blade seat, changes the downthehole internal rotation and installs the pivot, and the outside welding of pivot has four welded plates, and one side welding that the pivot was kept away from to the welded plate has first ball, and the welding has the second ball on the cardboard, and first ball contacts with corresponding second ball, and the blade all adopts stainless steel with the casing.

Preferably, be provided with the filter plate in the casing, be provided with two traction plates on the filter plate, threaded connection has the bolt on the traction plate, has all seted up the bolt groove on the top inner wall of casing and the bottom inner wall, and bolt groove bolt fastening, the existence of filter plate can prevent that external sand and dust from getting into.

Preferably, the one end welding that the pivot extends to outside putting the chamber has the handle of taking, and takes the outside of handle and be provided with the decorative pattern, makes things convenient for the rotation of pivot.

Preferably, the number of the springs located on the same clamping plate is two to four, and the two to four springs located on the same clamping plate are arranged at equal intervals to limit the number of the springs.

Preferably, the first ball is the same as the second ball in specification, and the first ball can extrude the second ball under the rotation of the rotating shaft.

Preferably, the side wall of the clamping groove is provided with a sealing ring, and the clamping plate is in sealing contact with the inner side of the corresponding sealing ring, so that the tightness of the clamping plate after being clamped with the clamping groove is ensured.

In the utility model, the explosion-proof fan is characterized in that the blades and the casing are made of stainless steel materials through the matching of the casing, the connecting frame, the motor, the hub, the blades, the blade seat, the connecting groove, the placing cavity, the clamping plate hole, the clamping plate, the clamping groove, the side plate, the rectangular groove, the spring, the rotary hole, the rotary shaft, the welding plate, the first round ball, the second round ball, the filter plate, the traction plate and the bolt, so that the blades and the casing can not generate sparks during friction, and the filter plate is arranged to prevent external sand stones from entering the casing to generate sparks due to friction with the blades, thereby realizing the explosion-proof performance of the fan;

and when the installation blade, not adopt the mode of direct welding, but rotate and take the handle, take and rotate the drive pivot, the pivot drives the welded plate and rotates, the welded plate drives first ball and rotates, first ball extrusion second ball, the second ball drives the cardboard and removes, cardboard extrusion spring, make cardboard and draw-in groove phase separation, then insert even inslot with the blade seat on the blade, then loosen and take the handle, the spring drives the cardboard and removes because self elasticity, make the cardboard block again in the draw-in groove, the form that clamps is changed into to the welded mode, such connected mode is more firm, can not produce the cracked problem of hookup location, and such connected mode, moreover, the steam generator is simple in structure, and convenient assembling.

The utility model discloses the practicality is good, has realized the explosion-proof performance of fan to trade the welded mode into the form that clamps, such connected mode is more firm, can not produce the cracked problem of hookup location.

Drawings

Fig. 1 is a schematic structural view of an explosion-proof fan provided by the present invention;

fig. 2 is a schematic structural diagram of a part a of an explosion-proof fan provided by the present invention;

fig. 3 is a schematic structural diagram of a part B of an explosion-proof fan provided by the utility model.

In the figure: the device comprises a machine shell 1, a connecting frame 2, a motor 3, a hub 4, blades 5, a blade seat 6, a connecting groove 7, a placing cavity 8, a clamping plate hole 9, a clamping plate 10, a clamping groove 11, side plates 12, a rectangular groove 13, a spring 14, a rotating hole 15, a rotating shaft 16, a welding plate 17, a first ball 18, a second ball 19, a filtering plate 20, a traction plate 21 and a bolt 22.

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 explosion-proof fan comprises a casing 1, connecting frames 2 are fixedly installed on the inner wall of the top and the inner wall of the bottom of the casing 1, one side of the two connecting frames 2 close to each other is fixedly installed with a same motor 3, a hub 4 is welded on the output shaft of the motor 3, four blades 5 are contacted with the outer side of the hub 4, four connecting grooves 7 are opened on the outer side of the hub 4, blade seats 6 are arranged on the blades 5, the blades 5 and the blade seats 6 are integrally formed, the connecting grooves 7 are clamped with the blade seats 6 on the corresponding blades 5, a placing cavity 8 is opened on the hub 4, a clamping plate hole 9 is opened between the placing cavity 8 and the connecting grooves 7, a clamping plate 10 is slidably installed in the clamping plate hole 9, a clamping groove 11 is opened on one side of the blade seat 6, the clamping plate 10 is clamped with the clamping groove 11, four side plates 12 are welded, one side that curb plate 12 is close to blade seat 6 has seted up rectangular channel 13, one side of cardboard 10 extends to in rectangular channel 13 and has welded the one end of a plurality of springs 14, the other end of spring 14 welds on rectangular channel 13 keeps away from one side inner wall of rectangular channel 13 open-ended, place and seted up commentaries on classics hole 15 on one side inner wall that chamber 8 kept away from blade seat 6, change 15 internal rotations in the hole and install pivot 16, the outside welding of pivot 16 has four welded plates 17, one side welding that pivot 16 was kept away from to welded plate 17 has first ball 18, the welding has second ball 19 on the cardboard 10, first ball 18 contacts with corresponding second ball 19, blade 5 all adopts stainless steel with casing 1.

The utility model discloses in, be provided with filter plate 20 in the casing 1, be provided with two traction plates 21 on the filter plate 20, threaded connection has bolt 22 on the traction plate 21, has all seted up the bolt groove on the top inner wall of casing 1 and the bottom inner wall, and bolt 22 and bolt groove bolt fastening, the existence of filter plate 20 can prevent that external sand and dust from getting into.

The utility model discloses in, the one end welding that pivot 16 extends to put the chamber 8 outside has the handle of taking, and the outside of taking the handle is provided with the decorative pattern, makes things convenient for the rotation of pivot 16.

The utility model discloses in, the quantity of the spring 14 that is located on same cardboard 10 is two to four, and is located two to four equidistant intervals of spring 14 setting on same cardboard 10, prescribes a limit to the quantity of spring 14.

The utility model discloses in, first ball 18 is the same with second ball 19's specification, can guarantee under pivot 16's rotation, and first ball 18 can extrude second ball 19.

The utility model discloses in, install the sealing washer on draw-in groove 11's the lateral wall, and the inboard sealing contact of cardboard 10 and corresponding sealing washer, guarantee the compactness after cardboard 10 clamps with draw-in groove 11.

In the utility model, in use, the blades 5 and the casing 1 are made of stainless steel materials, so that the blades 5 and the casing 1 do not generate sparks during friction, and the filter plate 20 is arranged to prevent external sand stones from entering the casing 1 to generate sparks during friction with the blades 5, so that the explosion-proof performance of the fan is realized, the filter plate 20 is fixed by the bolts 22 and is convenient to detach and clean, and when the blades 5 are installed, a direct welding mode is not adopted, but a handle is rotated, the handle drives the rotating shaft 16 to rotate, the rotating shaft 16 drives the welding plate 17 to rotate, the welding plate 17 drives the first ball 18 to rotate, the first ball 18 extrudes the second ball 19, the second ball 19 drives the clamping plate 10 to move, the clamping plate 10 extrudes the spring 14, so that the clamping plate 10 is separated from the clamping groove 11, then the blade seat 6 on the blades 5 is inserted into the connecting groove 7, then the handle is loosened, the spring 14 drives the clamping plate 10 to move due to self elasticity, the clamping plate 10 is clamped into the clamping groove 11 again, the welding mode is changed into the clamping mode, the connecting mode is firmer, the problem that the connecting position is broken is solved, and the connecting mode is simple in structure and convenient to assemble.

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 explosion-proof fan comprises a casing (1) and is characterized in that connecting frames (2) are fixedly mounted on the inner wall of the top and the inner wall of the bottom of the casing (1), one side, close to each other, of each of the two connecting frames (2) is fixedly provided with a same motor (3), a wheel hub (4) is welded on an output shaft of each motor (3), four blades (5) are in contact with the outer side of each wheel hub (4), four connecting grooves (7) are formed in the outer side of each wheel hub (4), blade seats (6) are arranged on the blades (5), the connecting grooves (7) are clamped with the blade seats (6) on the corresponding blades (5), a placing cavity (8) is formed in each wheel hub (4), a clamping plate hole (9) is formed between each placing cavity (8) and each connecting groove (7), a clamping plate (10) is slidably mounted in each clamping plate hole (9), a clamping groove (11) is, the clamping plate (10) is clamped with the clamping groove (11), four side plates (12) are welded on the inner wall of one side of the placement cavity (8) far away from the blade seat (6), a rectangular groove (13) is formed in one side of each side plate (12) close to the blade seat (6), one side of the clamping plate (10) extends into the rectangular groove (13) and is welded with one end of a plurality of springs (14), the other end of each spring (14) is welded on the inner wall of one side of the rectangular groove (13) far away from the opening of the rectangular groove (13), a rotary hole (15) is formed in the inner wall of one side of the placement cavity (8) far away from the blade seat (6), a rotary shaft (16) is installed in the rotary hole (15) in a rotating mode, four welding plates (17) are welded on the outer side of the rotary shaft (16), a first round ball (18) is welded on one side of each welding plate (17) far away from the rotary shaft (16), a second round ball (19) is welded on the, the blades (5) and the casing (1) are made of stainless steel.

2. The explosion-proof fan according to claim 1, characterized in that a filter plate (20) is arranged in the casing (1), two traction plates (21) are arranged on the filter plate (20), bolts (22) are connected to the traction plates (21) in a threaded manner, bolt grooves are formed in the top inner wall and the bottom inner wall of the casing (1), and the bolts (22) are fixed to the bolt grooves by bolts.

3. The explosion-proof fan according to claim 1, wherein a lapping handle is welded to one end of the rotating shaft (16) extending out of the placing cavity (8), and patterns are arranged on the outer side of the lapping handle.

4. An explosion-proof fan as claimed in claim 1, characterized in that the number of springs (14) on the same card (10) is two to four, and the two to four springs (14) on the same card (10) are arranged at equal intervals.

5. An explosion-proof fan as claimed in claim 1, characterized in that the first bead (18) and the second bead (19) are of the same size.

6. The explosion-proof fan as claimed in claim 1, wherein the side wall of the slot (11) is provided with a sealing ring, and the clamping plate (10) is in sealing contact with the inner side of the corresponding sealing ring.