CN210889467U

CN210889467U - Centrifugal fan convenient to maintenance

Info

Publication number: CN210889467U
Application number: CN201921274587.XU
Authority: CN
Inventors: 余培铨; 徐洪海; 倪浩龙; 范林江; 顾华鑫
Original assignee: Zhejiang Rongwen Fans Co ltd
Current assignee: Zhejiang Rongwen Fans Co ltd
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2020-06-30
Anticipated expiration: 2029-08-07

Abstract

The utility model discloses a centrifugal fan convenient to maintenance includes the mount, can dismantle and locate motor, casing on the mount, locate impeller and connection in the casing coupling mechanism on motor and the mount, the casing includes first casing, can dismantle and locate second casing on the first casing, be used for connecting the first coupling assembling of first casing and second casing and the second coupling assembling that is used for connecting second casing and mount because the casing has first casing and second casing combination to form, then when the inside impeller of casing breaks down, can directly pull down first casing, and then maintain the impeller, provide sufficient operating space for the maintenance manual work, be convenient for maintain centrifugal fan.

Description

Centrifugal fan convenient to maintenance

Technical Field

The utility model belongs to the technical field of the fan, especially, relate to a centrifugal fan convenient to maintenance.

Background

The centrifugal fan is based on the principle that kinetic energy is converted into potential energy, and utilizes a blade fan rotating at high speed to accelerate, then decelerate and change the flow direction, so that the kinetic energy is converted into the potential energy (pressure). In a single stage centrifugal fan, the gas enters the impeller from an axial direction, changes to a radial direction as it flows through the impeller, and then enters the diffuser. In diffusers, the gas changes flow direction and the increase in conduit cross-sectional area slows the gas flow, which converts kinetic energy into pressure energy. The pressure increase occurs primarily in the impeller and secondarily in the diffusion process. In a multistage centrifugal fan, a flow reverser is used to direct the air flow to the next impeller, creating a higher pressure.

When the existing fan is installed, the motor and the shell are generally fixed on a fixed frame. But is inconvenient for later maintenance. And the existing centrifugal fan shell is generally integrally formed, and if the impeller in the shell breaks down, the maintenance is very inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome prior art not enough, provide a centrifugal fan convenient to maintenance.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a centrifugal fan convenient to maintain comprises a fixed frame, a motor, a shell, an impeller and a connecting mechanism, wherein the motor is detachably arranged on the fixed frame, the impeller is arranged in the shell, the connecting mechanism is used for connecting the motor with the fixed frame, the shell comprises a first shell, a second shell detachably arranged on the first shell, a first connecting assembly and a second connecting assembly, the first connecting assembly is used for connecting the first shell with the second shell, and the second connecting assembly is used for connecting the second shell with the fixed frame; because the casing has first casing and second casing combination to form, then when the inside impeller of casing breaks down, can directly pull down first casing, and then maintain the impeller, provide sufficient operating space for the maintenance manual work, be convenient for maintain centrifugal fan.

Preferably, the first connecting assembly includes an insert plate disposed on the first housing, an insert slot disposed on the second housing, a fastening member, and a sealing member; the first shell and the second shell can be easily spliced together through the matching of the inserting plate and the inserting groove, so that the assembly is convenient, and a certain sealing effect can be achieved, so that the wind in the shells is prevented from leaking from the connecting part of the first shell and the second shell; and when dismantling first casing, can prevent that first casing from dropping suddenly, need not the manual first casing of support among the dismantlement process, dismantle convenient.

Preferably, the fastening component includes a first connecting plate disposed on the first housing, a second connecting plate disposed on the second housing, a first screw rod for connecting the first connecting plate and the second connecting plate, and a nut disposed on the first screw rod.

Preferably, the sealing component comprises a mounting groove arranged in the second shell, a sealing strip arranged in the mounting groove and a sealing groove arranged in the first shell, and the sealing groove can be used for the sealing strip to be clamped in; through going into the sealing groove with the sealing strip, can fully guarantee the sealed effect of first casing and second casing junction.

Preferably, a rubber sleeve is sleeved outside the inserting plate; the sealing effect of the inserting plate is further improved.

Preferably, the second coupling assembling is including locating fixed plate on the mount, locating cardboard and the dead part of lock on the second casing, the fixed plate be equipped with fixed plate complex joint groove.

Preferably, the locking part comprises a push plate arranged in the clamping groove, a plurality of second screws arranged on the push plate, a plurality of elastic pieces arranged on the push plate and a pressing plate arranged on the end parts of the elastic pieces, and the pressing plate is provided with a threaded hole matched with the second screws; when the second shell is fixed, the fixing plate is clamped into the clamping groove, then the second screw rod is rotated to push the push plate to move, and the press plate is driven to move to the fixing plate, so that the second shell is fixed on the fixing plate; the elastic piece is arranged, so that the fixing effect of the pressing plate can be guaranteed, and the vibration transmitted to the shell can be reduced.

Preferably, the pressing plate is provided with a guide post, and the push plate is provided with a guide hole matched with the guide post; the pressure plate is prevented from moving left and right relative to the push plate.

Preferably, a rubber plate is arranged on the bottom surface of the pressure plate; not only can reduce the abrasion between the pressing plate and the fixing plate, but also can prevent the friction between the pressing plate and the fixing plate from generating noise.

In conclusion, because the casing has first casing and second casing combination to form, then when the inside impeller of casing broke down, can directly pull down first casing, and then maintain the impeller, provide sufficient operating space for the maintenance manual work, be convenient for maintain centrifugal fan.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged view of fig. 1 at a.

Fig. 3 is a cross-sectional view of the present invention.

Fig. 4 is an enlarged view of fig. 3 at a.

Fig. 5 is an enlarged view of fig. 3 at B.

Detailed Description

As shown in fig. 1-5, a centrifugal fan convenient for maintenance comprises a motor 1, a fixing frame 2, a casing, an impeller and a connecting mechanism, wherein the fixing frame 2 is a conventional metal steel frame for fixing the motor and the casing, and is provided with a fixing hole 21 at the bottom for inserting a screw, so that the fixing frame is conveniently and fixedly mounted; the motor 1 is a conventional motor and is detachably fixed on the fixed frame through a connecting mechanism; the impeller is a conventional centrifugal impeller and is connected with an output shaft of the motor through a shaft; the connecting mechanism comprises a fixing plate 4, a supporting plate 41, a sliding plate 42, an inserting rod 43, an inserting hole 44, a locking device and a positioning device, wherein the fixing plate 4 is fixed on the fixing frame and used for supporting the motor; the supporting plates 41 are symmetrically fixed on two sides of the bottom of the motor; the sliding plates 42 are symmetrically fixed on the top surface of the fixed plate, and the sliding plates are provided with sliding grooves 421 for the insertion of the supporting plate; the inserted bar 43 is arranged on the sliding plate in a penetrating way and can slide up and down relative to the sliding plate; jack 44 sets up on backup pad 41, and it can supply the inserted bar to insert, then when the installation motor, aims at the backup pad of motor spout and inserts and make the inserted bar aim at with the jack, then insert the inserted bar in the jack, can accomplish the installation fixed to the motor, simple to operate, and when dismantling the motor, pull out the inserted bar in following the jack and can follow the slide with the motor and pull out convenient to detach motor.

Preferably, the locking device comprises a mounting cavity 5, a connecting plate 51, a clamping block 52, a clamping groove 53, a sliding rod 54, a first elastic element 55, a control plate 56, a baffle 57, a second elastic element 58 and a rubber pad 59, wherein the mounting cavity 5 is arranged in the inserted link; the connecting plates 51 are symmetrically arranged in the mounting cavity; the fixture block 52 is fixed at the lower end of the connecting plate, the fixture block is provided with an inclined plane, and the lower end of the inserted rod is provided with an opening for the fixture block to extend out; the clamping groove 53 is formed in the sliding plate; two sliding rods 54 are preferably selected, two ends of each sliding rod are respectively fixed on the inner wall of the installation cavity, and a circular hole for the sliding rod to penetrate through is formed in the connecting plate; the first elastic piece 55 is a spring, which is sleeved on the sliding rod, and two ends of the first elastic piece are respectively fixed on the connecting plate; one end of the control plate 56 is fixed at the upper end of the connecting plate, and the other end of the control plate extends out of the inserted link; the baffle 57 is fixed on the inserted link; the second elastic piece 58 is a spring, the spring is sleeved on the inserted link, the upper end of the spring is fixed on the baffle plate, the lower end of the spring is fixed on the sliding plate, when the motor is fixedly installed, the supporting plate of the motor is aligned with the sliding groove to be inserted so that the inserted link is aligned with the slot, the inserted link is pressed downwards, the side wall of the slot automatically extrudes the fixture block to enter the installation cavity, and when the lower end of the inserted link enters the slot, the first elastic piece pushes the two sides of the connecting phase to move so as to push the fixture block to move into the slot, and the locking of the inserted link is; when the motor is disassembled, the pressing control plate drives the clamping block to retract into the mounting cavity, and the second elastic piece automatically pushes the inserted rod to be separated from the slot; the rubber pad 59 is fixed on the upper end of the inserted link, and the surface of the rubber pad is provided with a bulge, so that the pressing comfort level is improved.

Preferably, the positioning device comprises a limiting plate 6, a mounting hole 61, a buffer rod 62 and a third elastic member 63, and the limiting plate 6 is fixed in the chute; the mounting hole 61 is formed in the limiting plate; the buffer rod 62 is arranged in the mounting hole and can slide relative to the mounting hole; the third elastic piece 63 is a spring, one end of the spring is fixed to the bottom of the mounting hole, and the other end of the spring is fixed to the end of the buffer rod, so that the support plate is prevented from directly impacting the limiting plate, and the impact force of the support plate is reduced.

Specifically, the housing includes a first housing 31, a second housing 32, a first connecting assembly and a second connecting assembly, and the first housing and the second housing can be spliced into a finished housing; the first connecting assembly comprises an inserting plate 7, a slot 71, a first connecting plate 72, a second connecting plate 73, a first screw 74, a nut 75, a mounting groove, a sealing strip 76, a sealing groove 77 and a rubber sleeve 78, and the inserting plate 7 is fixed on the first shell; the slot 71 is arranged in the second shell and can be used for inserting a plug board; the first connecting plate 72 is fixed on the first shell and is provided with a threaded hole; the second connecting plate 73 is fixed on the second shell, is arranged corresponding to the first connecting plate and is provided with a threaded hole, and the first screw 74 adopts a conventional screw and passes through the threaded holes of the first connecting plate and the second connecting plate; the nut 75 is a conventional nut which is screwed on the screw rod; the mounting groove is formed in the second shell; the sealing strip 76 is a conventional rubber sealing strip and is fixed in the mounting groove; the sealing groove 77 is formed in the first housing and can be used for clamping a sealing strip; the rubber sleeve 78 is sleeved and fixed on the inserting plate.

Specifically, the second connecting assembly comprises a clamping plate 33, a push plate 34, a second screw 35, an elastic piece 36, a pressure plate 37, a guide post 38 and a rubber plate 39, wherein the clamping plate 33 is fixed on the second shell and is provided with a clamping groove 331; the second screw 35 is in threaded connection with the clamping plate; the push plate 34 is rotatably connected to the lower end of the second screw rod; the elastic piece 36 is a spring, and the upper end of the elastic piece is fixed on the bottom surface of the push plate; the pressing plate 37 is fixed at the lower end of the elastic piece 36; the guide posts 38 are fixed on the top surface of the pressing plate, and the push plate is provided with guide holes for the guide posts to pass through; the rubber plate 39 is fixed on the bottom surface of the pressing plate, so that the abrasion between the pressing plate and the fixing plate can be reduced, and the noise caused by the friction between the pressing plate and the fixing plate can be prevented.

Claims

1. The utility model provides a centrifugal fan convenient to maintenance, includes mount (2), can dismantle and locate motor (1), casing on mount (2), locate impeller and connection in the casing coupling mechanism on motor and the mount, its characterized in that: the casing includes first casing (31), can dismantle and locate second casing (32) on first casing (31), be used for connecting the first coupling assembling of first casing and second casing and be used for connecting the second casing and the second coupling assembling of mount.

2. The centrifugal fan convenient to maintain of claim 1, wherein: the first connecting assembly comprises an inserting plate (7) arranged on the first shell (31), a slot (71) arranged on the second shell (32), a fastening part and a sealing part.

3. The centrifugal fan convenient to maintain according to claim 2, characterized in that: the fastening component comprises a first connecting plate (72) arranged on the first shell (31), a second connecting plate (73) arranged on the second shell (32), a first screw (74) used for connecting the first connecting plate and the second connecting plate, and a nut (75) arranged on the first screw (74).

4. The centrifugal fan convenient to maintain according to claim 2, characterized in that: the sealing component comprises a mounting groove arranged in the second shell (32), a sealing strip (76) arranged in the mounting groove and a sealing groove (77) arranged in the first shell (31), and the sealing groove can be blocked by the sealing strip.

5. The centrifugal fan convenient to maintain according to claim 2, characterized in that: and a rubber sleeve (78) is sleeved outside the inserting plate (7).

6. The centrifugal fan convenient to maintain of claim 1, wherein: the second connecting assembly comprises a fixing plate (4) arranged on the fixing frame (2), a clamping plate (33) arranged on the second shell (32) and a locking part, and the clamping plate (33) is provided with a clamping groove (331) matched with the fixing plate.

7. The centrifugal fan convenient to maintain according to claim 6, wherein: the locking part comprises a push plate (34) arranged in the clamping groove (331), a plurality of second screw rods (35) arranged on the push plate (34), a plurality of elastic pieces (36) arranged on the push plate (34) and a pressing plate (37) arranged on the end part of the elastic pieces (36), and the clamping plate is provided with a threaded hole matched with the second screw rods.

8. The centrifugal fan convenient to maintain of claim 7, wherein: the pressing plate (37) is provided with a guide post (38), and the push plate (34) is provided with a guide hole matched with the guide post.

9. The centrifugal fan convenient to maintain of claim 7, wherein: and a rubber plate (39) is arranged on the bottom surface of the pressing plate (37).