CN212272578U - Dust explosion-proof centrifugal fan - Google Patents

Abstract

The utility model discloses an explosion-proof centrifugal fan of dust, include: the frame the fixed outer spiral case that is provided with in upper end of frame one side of outer spiral case is provided with air intake and dust filter screen the opposite side of outer spiral case is rotated through first bearing and is provided with first pivot, the one end that first pivot stretched out outer spiral case is connected with driving motor's first motor shaft, driving motor passes through the fixed setting of motor cabinet on outer spiral case the inside first square sliding chamber that is provided with of the other end of first pivot it is provided with the square slide bar rather than mutually supporting to slide in the first square sliding chamber the middle part outside of first pivot is provided with the handle spout that communicates each other with first square sliding chamber it is provided with the handle rather than mutually supporting to slide in the handle spout, the handle is connected with square slide bar.

Description

Dust explosion-proof centrifugal fan

Technical Field

The utility model relates to a fan especially relates to an explosion-proof centrifugal fan of dust.

Background

Centrifugal fans are widely used in the fields of ventilation and dust removal in factories, mines, tunnels, cooling towers, vehicles, ships and buildings. When the existing centrifugal fan is used in a field containing a large amount of dust, the dust in gas can be continuously attached to the impeller, the weight of the impeller is greatly increased after a long time, the impeller is overloaded to work, the impeller is easy to burst, the use is unsafe, and meanwhile, when the impeller is cleaned, the volute needs to be disassembled by stopping for a long time, so that the impeller is taken out independently, the cleaning is troublesome, time and labor are wasted, and the working efficiency is delayed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the dust explosion-proof centrifugal fan is convenient to clean.

In order to solve the technical problem, the utility model discloses a technical scheme is: a dust explosion-proof centrifugal fan comprises: the device comprises a rack, an outer volute is fixedly arranged at the upper end of the rack, an air inlet and a dust filter screen are arranged on one side of the outer volute, a first rotating shaft is rotatably arranged on the other side of the outer volute through a first bearing, one end of the first rotating shaft, which extends out of the outer volute, is connected with a first motor shaft of a driving motor, the driving motor is fixedly arranged on the outer volute through a motor base, a first square sliding cavity is arranged inside the other end of the first rotating shaft, a square sliding rod which is matched with the first square sliding cavity is arranged in the first square sliding cavity in a sliding manner, a handle sliding groove which is communicated with the first square sliding cavity is arranged on the outer side of the middle part of the first rotating shaft, a handle which is matched with the handle sliding groove is arranged in the handle sliding manner, the handle is connected with the square sliding rod, and one end, which extends into the first square sliding cavity, is connected with, be provided with the air outlet on the up end of outer spiral case the fixed washing box that is provided with of lower extreme of frame the even symmetry in both sides of wasing the box is provided with the jetter the middle part one side of frame is provided with step motor be provided with the turning block on step motor's the second motor shaft the upper and lower both ends symmetry of turning block is provided with and removes the spiral case outer spiral case and washing box are internal to be provided with respectively with the interior caulking groove that removes the spiral case and mutually support the bilateral symmetry of removing the spiral case is provided with the support frame it is provided with the second pivot to rotate through the second bearing between the support frame be provided with the impeller in the second pivot the one end inside that the second pivot is close to first pivot is provided with the square sliding chamber of second of mutually supporting with square slide bar.

In order to better solve the technical problem, the utility model discloses a further technical scheme is: the positioning device comprises a rack, a positioning cylinder is arranged on the other side of the middle of the rack, a positioning block is arranged on a piston rod of the positioning cylinder, and a positioning groove matched with the positioning block is formed in the rotating block.

In order to better solve the technical problem, the utility model discloses a further technical scheme is: the handle is connected with a pneumatic telescopic device arranged on the first rotating shaft.

The utility model has the advantages that: above-mentioned explosion-proof centrifugal fan of dust, novel structure adopts the bilobed wheel structure, and a work, a washing can circulate and change, in time rinses adnexed dust on the impeller, prevents that the impeller from leading to overload work because of the continuous grow of self gravity, stops the impeller phenomenon of bursting, safe and reliable, and it is convenient to wash, changes swiftly, and work efficiency is high.

Drawings

Fig. 1 is the structure schematic diagram of the dust explosion-proof centrifugal fan of the utility model.

Fig. 2 is a schematic sectional structure view of a-a in fig. 1.

Fig. 3 is an enlarged schematic view of a portion B in fig. 1.

Fig. 4 is a left side view of the first shaft in fig. 3.

In the figure: 1. the device comprises a rack, 2, an outer volute, 3, an air inlet, 4, a dust filter screen, 5, a first bearing, 6, a first rotating shaft, 7, a driving motor, 8, a first motor shaft, 9, a motor base, 10, a first square sliding cavity, 11, a square sliding rod, 12, a handle sliding groove, 13, a handle, 14, a reset spring, 15, an air outlet, 16, a cleaning box body, 17, a spray cleaning device, 18, a stepping motor, 19, a second motor shaft, 20, a rotating block, 21, an inner movement of the volute, 22, an embedded groove, 23, a support frame, 24, a second bearing, 25, a second rotating shaft, 26, an impeller, 27, a second square sliding cavity, 28, a positioning cylinder, 29, a piston rod, 30, a positioning block, 31 and a positioning groove.

Detailed Description

The following detailed description of the present invention will be made in conjunction with the accompanying drawings and specific embodiments.

As shown in fig. 1, 2, 3 and 4, the dust explosion-proof centrifugal fan comprises: the device comprises a frame 1, an outer volute 2 is fixedly arranged at the upper end of the frame 1, an air inlet 3 and a dust filter screen 4 are arranged at one side of the outer volute 2, a first rotating shaft 6 is rotatably arranged at the other side of the outer volute 2 through a first bearing 5, one end of the first rotating shaft 6, which extends out of the outer volute 2, is connected with a first motor shaft 8 of a driving motor 7, the driving motor 7 is fixedly arranged on the outer volute 2 through a motor base 9, a first square sliding cavity 10 is arranged inside the other end of the first rotating shaft 6, a square sliding rod 11 matched with the first square sliding cavity 10 is arranged in the first square sliding cavity 10 in a sliding manner, a handle sliding groove 12 communicated with the first square sliding cavity 10 is arranged at the outer side of the middle part of the first rotating shaft 6, a handle 13 matched with the first square sliding cavity 10 is arranged in the handle sliding groove 12 in a sliding manner, and the handle 13 is connected, one end of the square sliding rod 11 extending into the first square sliding cavity 10 is connected with the first rotating shaft 6 through a return spring 14, an air outlet 15 is arranged on the upper end surface of the outer volute 2, a cleaning box 16 is fixedly arranged at the lower end of the rack 1, spraying devices 17 are uniformly and symmetrically arranged on two sides of the cleaning box 16, a stepping motor 18 is arranged on one side of the middle of the rack 1, a rotating block 20 is arranged on a second motor shaft 19 of the stepping motor 18, inner moving volutes 21 are symmetrically arranged at the upper end and the lower end of the rotating block 20, embedded grooves 22 which are matched with the inner moving volutes 21 are respectively arranged in the outer volute 2 and the cleaning box 16, supporting frames 23 are symmetrically arranged on two sides of the inner moving volutes 21, a second rotating shaft 25 is arranged between the supporting frames 23 through a second bearing 24 in a rotating manner, and an impeller 26 is arranged on the second rotating shaft 25, a second square sliding cavity 27 matched with the square sliding rod 11 is arranged inside one end of the second rotating shaft 25 close to the first rotating shaft 6.

As shown in fig. 1, in this example, a positioning cylinder 28 is disposed at the other side of the middle of the frame 1, a positioning block 30 is disposed on a piston rod 29 of the positioning cylinder 28, and a positioning groove 31 cooperating with the positioning block 30 is disposed on the rotating block 20.

As shown in fig. 1, 3 and 4, the handle 13 is connected to a pneumatic telescopic device provided on the first shaft 6.

When the dust explosion-proof centrifugal fan is used, the driving motor 7 is started, the first motor shaft 8 of the driving motor 7 drives the first rotating shaft 6 to rotate on the outer volute 2 through the first bearing 5, the first rotating shaft 6 drives the square slide bar 11 to rotate, the square slide bar 11 drives the second rotating shaft 25 to rotate on the support frame 23 through the second bearing 24, the second rotating shaft 25 drives the impeller 26 to rotate, gas enters the outer volute 2 and the inner moving volute 26 from the air inlet 3, the gas is discharged from the air outlet 15 outside the outer volute 2 under the action of the centrifugal force of the impeller 26, the dust filter screen 4 can filter larger dust of particles, and the impeller is prevented from being damaged.

When the dust explosion-proof centrifugal fan is used for continuously cleaning the impeller, as a certain amount of fine dust can be attached to the impeller 26, once the use time is too long, the weight of the impeller 26 is greatly increased, so that the impeller is overloaded to work, the impeller burst phenomenon is easy to occur, at the moment, the handle 13 is pulled rightwards through the pneumatic telescopic device, the handle 13 slides rightwards in the handle sliding groove 12, the handle 13 drives the square sliding rod 11 to slide rightwards in the first square sliding cavity 10 and extrude the return spring 14, the square sliding rod 11 is separated from the second square sliding cavity 27, the positioning cylinder 28 is started, the piston rod 29 of the positioning cylinder 28 drives the positioning block 30 to move leftwards and separate from the positioning groove 31, at the moment, the stepping motor 18 is started, the second motor shaft 19 of the stepping motor 18 drives the rotating block 20 to rotate, the rotating block 20 drives the upper and lower moving volutes 21 to rotate 180 degrees, the moving volute 21 at the upper end rotates to the embedded, the movable volute 21 at the lower end rotates to the embedded groove 22 in the outer volute 2, the handle 13 is pushed to the right and left through the pneumatic telescopic device, the handle 13 slides to the left in the handle sliding groove 12, the handle 13 drives the square sliding rod 11 to slide to the left in the first square sliding cavity 10 and insert into the second square sliding cavity 27, the reset spring 14 resets, the positioning cylinder 28 is started, the piston rod 29 of the positioning cylinder 28 drives the positioning block 30 to move to the right and insert into the positioning groove 31, at the moment, the impeller 26 in the outer volute 2 is clean, the impeller 26 in the cleaning box body 16 is attached with a large amount of dust, the impeller 26 in the outer volute 2 continues to work, the impeller in the cleaning box body 16 is sprayed and cleaned through the spraying device 17, the impeller 26 is dried and waits for next cycle replacement after being cleaned, the explosion-proof effect is achieved, and the working efficiency of the centrifugal fan is improved,

above-mentioned explosion-proof centrifugal fan of dust, novel structure adopts the bilobed wheel structure, and a work, a washing can circulate and change, in time rinses adnexed dust on the impeller, prevents that the impeller from leading to overload work because of the continuous grow of self gravity, stops the impeller phenomenon of bursting, safe and reliable, and it is convenient to wash, changes swiftly, and work efficiency is high.

Claims (3)

1. The utility model provides an explosion-proof centrifugal fan of dust which characterized in that: the method comprises the following steps: the dust collector comprises a rack (1), an outer volute (2) is fixedly arranged at the upper end of the rack (1), one side of the outer volute (2) is provided with an air inlet (3) and a dust filter screen (4), the other side of the outer volute (2) is rotatably provided with a first rotating shaft (6) through a first bearing (5), one end, extending out of the outer volute (2), of the first rotating shaft (6) is connected with a first motor shaft (8) of a driving motor (7), the driving motor (7) is fixedly arranged on the outer volute (2) through a motor base (9), a first square sliding cavity (10) is arranged inside the other end of the first rotating shaft (6), a square sliding rod (11) matched with the first square sliding cavity is arranged in the first square sliding cavity (10) in a sliding mode, a handle sliding groove (12) communicated with the first square sliding cavity (10) is arranged on the outer side of the middle of the first rotating shaft (6), the handle sliding groove (12) is internally provided with a handle (13) which is matched with the handle sliding groove in a sliding manner, the handle (13) is connected with a square sliding rod (11), one end of the square sliding rod (11) extending into a first square sliding cavity (10) is connected with a first rotating shaft (6) through a return spring (14), an air outlet (15) is formed in the upper end face of the outer volute (2), a cleaning box body (16) is fixedly arranged at the lower end of the rack (1), spraying and cleaning devices (17) are symmetrically and uniformly arranged on two sides of the cleaning box body (16), a stepping motor (18) is arranged on one side of the middle of the rack (1), a rotating block (20) is arranged on a second motor shaft (19) of the stepping motor (18), the upper end and the lower end of the rotating block (20) are symmetrically provided with an inner movement (21) in the volute, and the inner movement (21) which is matched with the inner movement (21) in the volute is respectively arranged in the outer volute (2) and the Caulking groove (22) remove the bilateral symmetry of spiral case (21) and be provided with support frame (23) rotate through second bearing (24) between support frame (23) and be provided with second pivot (25) be provided with impeller (26) on second pivot (25) the inside second square sliding chamber (27) of mutually supporting with square slide bar (11) that is provided with of one end that second pivot (25) are close to first pivot (6).

2. The dust explosion-proof centrifugal fan according to claim 1, characterized in that: a positioning cylinder (28) is arranged on the other side of the middle of the rack (1), a positioning block (30) is arranged on a piston rod (29) of the positioning cylinder (28), and a positioning groove (31) matched with the positioning block (30) is arranged on the rotating block (20).

3. The dust explosion-proof centrifugal fan according to claim 2, characterized in that: the handle (13) is connected with a pneumatic telescopic device arranged on the first rotating shaft (6).

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