CN215058449U

CN215058449U - Centrifugal fan volute with good noise reduction effect

Info

Publication number: CN215058449U
Application number: CN202121759240.1U
Authority: CN
Inventors: 李永辉
Original assignee: Hebei Wangxuan Ventilation Equipment Manufacturing Co ltd
Current assignee: Hebei Wangxuan Ventilation Equipment Manufacturing Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2021-12-07
Anticipated expiration: 2031-07-30

Abstract

The utility model discloses a centrifugal fan spiral case that noise reduction effect is good, which comprises a mounting bas, mount pad top outer wall has the spiral case body through the bolt fastening, mount pad top both sides outer wall all has the fixed plate, two through the bolt fastening the equal fixedly connected with locating plate of the relative one side outer wall of fixed plate, the fixed slot has all been seted up to spiral case body both sides outer wall, two fixed plates and two locating plate one side outer walls, two the equal spiro union of fixed slot inner wall has locking screw, two guide rails, two have been seted up to mount pad top outer wall the guide rail is located spiral case body both sides, two respectively the equal sliding connection of guide rail inner wall has the slider. The utility model discloses a be provided with fixed plate, locating plate, locking screw, electric putter, guide rail and grip block, can play extruded effect to the spiral case to stabilize the spiral case, further reduction centrifugal fan noise at the during operation production, thereby reduced noise pollution.

Description

Centrifugal fan volute with good noise reduction effect

Technical Field

The utility model relates to a centrifugal fan technical field especially relates to a centrifugal fan spiral case that noise reduction effect is good.

Background

The centrifugal fan accelerates gas by using an impeller rotating at a high speed according to the principle that kinetic energy is converted into potential energy, and then decelerates and changes the flow direction so as to convert the kinetic energy into the potential energy (pressure). In a single-stage centrifugal fan, gas enters an impeller from an axial direction, changes into a radial direction when flowing through the impeller and then enters a diffuser, the gas changes the flowing direction in the diffuser and the sectional area of a pipeline is increased to reduce the speed of the gas flow, the speed reduction action converts kinetic energy into pressure energy, and the pressure increase mainly occurs in the impeller and then occurs 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.

Centrifugal fan is when operation during operation, often can produce certain noise to cause noise pollution's the condition to the surrounding environment, and when centrifugal fan was in the state of not working, inside pollutants such as external dust floated into the spiral case easily, thereby caused the influence to centrifugal fan's operating condition, still can be stained with floater such as dust on the inner wall of the spiral case simultaneously.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the centrifugal fan spiral case that noise reduction is effectual that proposes.

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

a centrifugal fan volute with good noise reduction effect comprises a mounting seat, wherein a volute body is fixed on the outer wall of the top of the mounting seat through bolts, fixed plates are fixed on the outer walls of two sides of the top of the mounting seat through bolts, two fixed plates are fixedly connected with a positioning plate on the outer wall of one side opposite to the fixed plates, fixed grooves are formed in the outer walls of two sides of the volute body, the outer walls of two fixed plates and one side of the two positioning plates, locking screws are screwed in the inner walls of the two fixed grooves, two guide rails are arranged on the outer wall of the top of the mounting seat and are respectively positioned on two sides of the volute body, slide blocks are connected to the inner walls of the two guide rails in a sliding mode, clamping plates are fixed on the outer walls of the tops of the two slide blocks through bolts, electric push rods are fixed on the outer walls of one sides opposite to the fixed plates through bolts, and piston rods of the two electric push rods are respectively connected to the outer walls of one side of the two clamping plates, spiral case body both sides inner wall all is equipped with the teflon coating, and two relative one side outer walls of teflon coating have same filter screen, two through the bolt fastening there is same active carbon adsorption net the relative one side outer wall of teflon coating, spiral case body one end has the pipe joint through the bolt fastening, and two spouts have been seted up to pipe joint one side outer wall.

The volute is characterized in that an air cylinder is fixed on the outer wall of the top of the volute body through bolts, a piston rod of the air cylinder is connected with a transverse plate, and a sealing plate is fixed at one end of the transverse plate through bolts.

Two equal sliding connection of spout inner wall has the guide block, and the equal fixed connection of two guide blocks is on closing plate one side outer wall.

Two electric putter and cylinder all are connected with the switch through the wire, and the switch is connected with the controller through the wire.

The utility model has the advantages that:

1. the utility model discloses, through being provided with fixed plate, locating plate, locking screw, fixed slot, electric putter, guide rail and grip block, can play the extruded effect to the spiral case to stabilize the spiral case, further reduction centrifugal fan noise at the during operation production, thereby reduced noise pollution.

2. The utility model discloses, through being provided with spout, closing plate, cylinder, diaphragm and guide block, when centrifugal fan was in the state of not working, inside pollutants such as dust that can effectually avoid the external world wafted into the spiral case, played certain dustproof effect, avoided the pollutant to cause the influence to centrifugal fan's operating condition.

3. The utility model discloses, through being provided with the teflon coating to the teflon coating has non-adhesion, and almost all materials do not adhere with the teflon coating, and very thin film also can demonstrate fine non-adhesion performance, thereby can avoid pollutants such as dust to remain inside the spiral case, has played certain guard action.

Drawings

Fig. 1 is a schematic view of a centrifugal fan volute with a good noise reduction effect in a front view structure;

fig. 2 is a schematic perspective view of a volute of a centrifugal fan with a good noise reduction effect according to the present invention;

fig. 3 is a schematic view of a partial cross-sectional structure of a volute body of a centrifugal fan volute with a good noise reduction effect provided by the present invention;

fig. 4 is the utility model provides a closing plate and pipe joint connection structure sketch of centrifugal fan spiral case that noise reduction effect is good.

In the figure: the spiral case comprises a mounting seat 1, a spiral case body 2, a fixing plate 3, a positioning plate 4, a locking screw 5, a guide rail 6, a clamping plate 7, an electric push rod 8, a pipeline joint 9, a sliding groove 10, a sealing plate 11, a Teflon coating 13, a filter screen 14, an activated carbon adsorption net 15, an air cylinder 16, a transverse plate 17 and a guide block 18.

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.

Example one

Referring to fig. 1-4, a centrifugal fan volute with good noise reduction effect comprises a mounting base 1, wherein a volute body 2 is fixed on the outer wall of the top of the mounting base 1 through bolts, fixing plates 3 are fixed on the outer walls of two sides of the top of the mounting base 1 through bolts, positioning plates 4 are fixedly connected on the outer walls of two opposite sides of the two fixing plates 3, fixing grooves are formed in the outer walls of two sides of the volute body 2, the outer walls of two opposite sides of the two fixing plates 3 and the outer wall of one side of the two positioning plates 4, locking screws 5 are screwed on the inner walls of the two fixing grooves, two guide rails 6 are arranged on the outer wall of the top of the mounting base 1, the two guide rails 6 are respectively positioned on two sides of the volute body 2, sliders are slidably connected on the inner walls of the two guide rails 6, clamping plates 7 are fixed on the outer walls of the tops of the two sliders through bolts, electric push rods 8 are fixed on the outer walls of one opposite sides of the two clamping plates 7 through bolts on the outer walls of the two fixing plates 3, the inner walls of two sides of the volute body 2 are respectively provided with a Teflon coating layer 13, the outer wall of one side of the two Teflon coating layers 13 opposite to each other is fixed with a same filter screen 14 through a bolt, the outer wall of one side of the two Teflon coating layers 13 opposite to each other is fixed with a same active carbon adsorption screen 15 through a bolt, one end of the volute body 2 is fixed with a pipeline joint 9 through a bolt, and the outer wall of one side of the pipeline joint 9 is provided with two sliding chutes 10, preferably, the outer wall of the top of the volute body 2 is fixed with a cylinder 16 through a bolt, and the piston rod of the cylinder 16 is connected with a transverse plate 17, the two electric push rods 8 and the cylinder 16 are both connected with a switch through a lead, and the switch is connected with the controller through the wire, and the controller model is YKZ7280JA, and diaphragm 17 one end is fixed with sealing plate 11 through the bolt, and is preferred, and two equal sliding connection in spout 10 inner walls have guide block 18, and two equal fixed connection in guide block 18 are on sealing plate 11 one side outer wall.

The working principle is as follows: when the device is used, the device can extrude the volute body 2 through the fixed plate 3, the positioning plate 4, the locking screw 5, the fixing groove, the electric push rod 8, the guide rail 6 and the clamping plate 7, so that the volute body 2 is stabilized, the noise generated by the centrifugal fan during working is further reduced, the noise pollution is reduced, when the centrifugal fan is in a non-working state, the device can effectively prevent external dust and other pollutants from drifting into the volute body 2 through the sliding groove 10, the sealing plate 11, the air cylinder 16, the transverse plate 17 and the guide block 18 which are arranged on the outer side of the pipeline joint 9, a certain dustproof effect is achieved, the influence of the pollutants on the working state of the centrifugal fan is avoided, the Teflon coating 13 is matched, the Teflon coating 13 has non-adhesiveness, and almost all substances are not adhered to the Teflon coating 13, the thin film can also show good non-adhesion performance, thereby avoiding pollutants such as dust and the like from remaining in the volute body 2 and playing a certain protection role.

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. A centrifugal fan volute with a good noise reduction effect comprises a mounting seat (1) and is characterized in that a volute body (2) is fixed on the outer wall of the top of the mounting seat (1), fixing plates (3) are fixed on the outer walls of two sides of the top of the mounting seat (1), a positioning plate (4) is fixedly connected to the outer wall of one side, opposite to the two fixing plates (3), of the volute body (2), fixing grooves are formed in the outer walls of two sides of the volute body (2), the outer walls of the two fixing plates (3) and the outer wall of one side of the two positioning plates (4), locking screws (5) are screwed in the inner walls of the two fixing grooves, two guide rails (6) are arranged on the outer wall of the top of the mounting seat (1), the two guide rails (6) are respectively located on two sides of the volute body (2), sliding blocks are connected to the inner walls of the two guide rails (6) in a sliding mode, and clamping plates (7) are fixed on the outer walls of the tops of the two sliding blocks, two fixed plate (3) relative one side outer wall all is fixed with electric putter (8), two the piston rod of electric putter (8) is connected respectively on two grip blocks (7) one side outer wall, spiral case body (2) both sides inner wall all is equipped with teflon coating (13), and two teflon coating (13) relative one side outer walls are fixed with same filter screen (14), two teflon coating (13) relative one side outer wall is fixed with same active carbon and adsorbs net (15), spiral case body (2) one end is fixed with pipe joint (9), and pipe joint (9) one side outer wall has seted up two spout (10).

2. The centrifugal fan volute with the good noise reduction effect according to claim 1, wherein an air cylinder (16) is fixed on the outer wall of the top of the volute body (2), a piston rod of the air cylinder (16) is connected with a transverse plate (17), and a sealing plate (11) is fixed at one end of the transverse plate (17).

3. The volute for the centrifugal fan with the good noise reduction effect according to claim 2, wherein the inner walls of the two sliding grooves (10) are slidably connected with guide blocks (18), and the two guide blocks (18) are fixedly connected to the outer wall of one side of the sealing plate (11).

4. The volute of the centrifugal fan with good noise reduction effect according to claim 3, wherein the two electric push rods (8) and the air cylinder (16) are connected with a switch through a wire, and the switch is connected with a controller through a wire.