CN212583966U

CN212583966U - Glass fiber reinforced plastic centrifugal fan with noise reduction function

Info

Publication number: CN212583966U
Application number: CN202021386436.6U
Authority: CN
Inventors: 王战
Original assignee: Changzhou Huahong Frp Co ltd
Current assignee: Changzhou Huahong Frp Co ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2021-02-23
Anticipated expiration: 2030-07-14

Abstract

The utility model relates to a glass steel centrifugal fan with amortization function, including centrifugal fan body and spiral case, the spiral case is fixed one side of centrifugal fan body, the spiral case reaches the inside of centrifugal fan body is linked together, and the spiral case is kept away from the arc through-hole has been seted up to one side of centrifugal fan body, the border fixedly connected with backup pad of department of arc through-hole, the backup pad is located inside the spiral case, the inside board of placing of arc through-hole, it is close to place the board one side of spiral case center department is provided with the amortization layer. The utility model relates to a technical field of sound structure in fan. The utility model discloses the inside noise damping layer that is provided with of spiral case has reduced the noise volume that produces in the equipment course of operation, owing to the work function of placing board, bracing piece, has the effect that has improved the efficiency of changing the noise damping layer in addition.

Description

Glass fiber reinforced plastic centrifugal fan with noise reduction function

Technical Field

The utility model belongs to the technical field of the technique of amortization structure in the fan and specifically relates to a glass steel centrifugal fan with sound attenuation function is related to.

Background

The centrifugal fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion.

Chinese patent with publication number CN207864265U discloses a glass fiber reinforced plastic centrifugal fan with noise reduction function, which comprises a centrifugal fan main body, a volute, an air inlet, an air guide channel, an air outlet, a support frame, a base, a fixing plate, a silencer, a cavity, a sound absorption layer, a filling material and concave holes, wherein the volute is arranged on the centrifugal fan main body, the air inlet is arranged on the volute, the air guide channel is arranged on one side of the cavity, the air outlet is arranged at the top of the air guide channel, the silencer is arranged on the air outlet, the support frame is arranged at the bottom of the volute, the base is arranged at the bottom of the support frame, the fixing plate is arranged on the base, the sound absorption layer is arranged on the inner wall of the. The inner wall of the glass fiber reinforced plastic centrifugal fan is provided with the sound absorption layer, and the sound absorption layer is composed of concave holes and sound absorption materials, so that the noise can be effectively reduced; simultaneously, the impedance combined type silencer that sets up at the air outlet can show the noise abatement, and this dual noise reduction design, the noise reduction effect is showing.

The above prior art solutions have the following drawbacks: the sound absorption layer is located the spiral case inner wall, when needing to be changed the sound absorption layer, needs earlier spiral case and centrifugal fan main part separation, just can carry out the change of sound absorption layer. The work efficiency of replacing the silencing layer is reduced.

SUMMERY OF THE UTILITY MODEL

According to the deficiency that prior art exists, the utility model aims at providing a glass steel centrifugal fan with sound attenuation function has the effect that has improved the efficiency of changing the amortization layer.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a glass steel centrifugal fan with amortization function, includes centrifugal fan body and spiral case, the spiral case is fixed one side of centrifugal fan body, the spiral case reaches the inside of centrifugal fan body is linked together, and the spiral case is kept away from the arc through-hole has been seted up to one side of centrifugal fan body, the border fixedly connected with backup pad of arc through-hole department, the backup pad is located inside the spiral case, place the board inside placing of arc through-hole, it is close to place the board one side of spiral case center department is provided with the amortization layer.

Through adopting above-mentioned technical scheme, place the noise reduction layer on the board and have the noise intensity that reduces centrifugal extension during operation production, place the board and get into inside the spiral case through the arc through-hole. The supporting plate at the inner edge of the arc-shaped through hole supports the placing plate placed inside the volute. Through the arc through-hole, make things convenient for operating personnel to take out and place the board, and then change the amortization layer of placing on the board, improved the efficiency of changing the amortization layer.

The present invention may be further configured in a preferred embodiment as: the spiral case with the inner wall fixedly connected with a plurality of bracing pieces of one side that centrifugal fan body was laminated mutually, the one end that the bracing piece was kept away from the centrifugal fan body is just facing the arc through-hole, place the board and just facing one side of bracing piece has seted up a plurality of first through-holes, first through-hole with the position and the quantity of bracing piece are corresponding, work as place the board and be located inside the arc through-hole, the bracing piece is located inside the first through-hole.

Through adopting above-mentioned technical scheme, inside the bracing piece inserted first through-hole, the bracing piece further confirmed to place the board and is located the inside position of arc through-hole, and the bracing piece plays the supporting role to being located the inside board of placing of spiral case.

The present invention may be further configured in a preferred embodiment as: the first through hole is a counter bore, and a threaded hole is formed in one side of the supporting rod, which faces the placing plate.

Through adopting above-mentioned technical scheme, the countersunk head bolt passes first through-hole, and countersunk head bolt and the inside screw hole threaded connection of bracing piece make place the board and fix mutually with the bracing piece.

The present invention may be further configured in a preferred embodiment as: the placing plate is located on the outer peripheral surface of the outer portion of the volute and is fixedly connected with a baffle, and a sealing gasket is arranged on one side, close to the volute, of the baffle.

Through adopting above-mentioned technical scheme, baffle and sealed the pad make fall on that the outside liquid of centrifugal fan body can't flow into inside the spiral case from placing the gap department between board and the arc through-hole.

The present invention may be further configured in a preferred embodiment as: the placing plate is positioned on one side outside the volute and provided with a taking hole.

Through adopting above-mentioned technical scheme, the hole of taking makes things convenient for operating personnel to place the board and take out from arc through-hole department.

To sum up, the utility model discloses a following at least one useful technological effect:

1. through centrifuge body, spiral case, arc through-hole, place board, backup pad and amortization layer, the effectual noise that produces of centrifuge body during operation that has reduced, and improved the work efficiency that operating personnel dismantled the amortization layer.

2. Through bracing piece, screw hole, first through-hole etc. will further place the board and fix inside the spiral case.

3. Through baffle, sealed pad, spiral case, place the board etc. avoid outside dust of centrifugal fan or liquid to flow into inside the spiral case through placing the gap department between board and the arc through-hole.

Drawings

Fig. 1 is a schematic front view of the present embodiment.

Fig. 2 is a partial structural view of fig. 1 in half section.

Fig. 3 is a front view schematically illustrating the structure of the placement plate of fig. 1.

Fig. 4 is a left side view schematically showing the structure of the placement board of fig. 1.

In the figure, 1, a centrifugal fan body; 2. a volute; 3. an arc-shaped through hole; 31. a support plate; 4. placing the plate; 41. a sound-deadening layer; 5. a support bar; 42. a first through hole; 51. a threaded hole; 6. a baffle plate; 61. a gasket; 7. taking the hole; 8. a second via.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

referring to fig. 1, the utility model discloses a glass steel centrifugal fan with sound attenuation function, including centrifugal fan body 1 and spiral case 2. The volute 2 is fixedly connected to one side of the centrifugal fan body 1 through bolts, the volute 2 and the inside of the centrifugal fan body 1 are both of a hollow structure, a second through hole 8 (see fig. 2) is formed in one side, in contact with the centrifugal fan body 1, of the volute 2, and the volute 2 is communicated with the inside of the centrifugal fan body 1. The device generates noise during operation. In order to reduce the noise generated during the work and facilitate the replacement of the silencer by operators. Arc through-hole 3 has been seted up to one side that centrifugal fan body 1 was kept away from to

spiral case

2, and 3 departments of arc through-hole wear to be equipped with place board 4,

place board

4 and 3 looks adaptations of arc through-hole. The side of the placing plate 4 close to the center of the volute 2 is glued with a sound attenuation layer 41. The sound-deadening layer 41 may be made of a material that can absorb sound waves, such as foam rubber. In order to place the placing plate 4 smoothly inside the arc-shaped through-hole 3. The arc through-hole 3 is located inside one side border of spiral case 2 and all has welded the backup pad 31 (see figure 2), owing to there is the support of backup pad 31, places board 4 and need not with the help of any auxiliary component, can place inside arc through-hole 3.

Referring to fig. 1, to further fix the placing plate 4 placed inside the scroll casing 2. A plurality of support rods 5 are welded on the inner wall of one side of the volute 2, which is contacted with the centrifugal fan body 1. In the present embodiment, the number of the support rods 5 is preferably five. One end of the support rod 5 faces the arc-shaped through hole 3. In order to facilitate the support rod 5 to extend into the interior of the placing plate 4, five first through holes 42 are uniformly formed at one side of the placing plate 4. The first through hole 42 corresponds to the position of the support rod 5. And the first through hole 42 is matched with the shape of the support rod 5. When the placing plate 4 is placed inside the scroll casing 2 through the arc-shaped through-holes 3, the five support rods 5 are each moved inside the corresponding first through-hole 42.

Referring to fig. 1, a threaded hole 51 is formed in the center of one end of the support rod 5 away from the centrifuge body. In order to fixedly connect the placing plate 4 and the supporting rod 5 together using bolts. The first through hole 42 is a counter-sunk hole. The countersunk head bolt is screwed into the threaded hole 51 through the first through hole 42. The placing plate 4 and the supporting rod 5 are fixed together by a countersunk head bolt.

Referring to fig. 3, in order to prevent dust or liquid outside the apparatus from entering the inside of the scroll casing 2 through the gap between the placing plate 4 and the arc-shaped through hole 3. The baffle 6 is welded on the outer peripheral surface of the placing plate 4 positioned outside the volute 2, and the sealing gasket 61 is adhered on one side of the baffle 6 close to the volute 2 by glue. When the placing plate 4 is completely placed inside the arc-shaped through-hole 3. The seal gasket 61 is in contact with the outer wall of the scroll casing 2, and the seal gasket 61 is deformed.

Referring to fig. 4, when the operator is ready to replace the sound-deadening layer 41, the placing plate 4 is provided with a taking hole 7 at a side of the placing plate 4 located outside the scroll casing 2 in order to facilitate the taking of the placing plate 4 by the operator.

The implementation principle of the above embodiment is as follows: when the operator needs to replace the sound damping layer 41. The operator first uses a tool to rotate the countersunk head bolt located inside the threaded hole 51 out of the first through hole 42. The operator then grasps the take-out hole 7 and pulls the placing plate 4 out of the volute 2.

Further, the operator tears off the old sound deadening layer 41 and attaches the new sound deadening layer 41 to the placing board 4 at a side close to the center of the placing board 4 with glue. The operator then replaces the placing plate 4 inside the arc-shaped through-hole 3. The five support rods 5 are respectively inserted into the corresponding first through holes 42.

Finally the operator inserts the countersunk head bolt into the interior of the first housing and screws it into the threaded hole 51 in the interior of the support bar 5. When the countersunk head bolt is fully seated within the first through hole 42. The operation of replacing the sound-deadening layer 41 is completed.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a glass steel centrifugal fan with amortization function, includes centrifugal fan body (1) and spiral case (2), spiral case (2) are fixed one side of centrifugal fan body (1), spiral case (2) and the inside of centrifugal fan body (1) is linked together, its characterized in that: arc through-hole (3) have been seted up to one side of spiral case (2) keeping away from centrifugal fan body (1), fixedly connected with backup pad (31) are located to the border of arc through-hole (3), backup pad (31) are located inside spiral case (2), place board (4) have been placed to arc through-hole (3) inside, place board (4) are close to one side of spiral case (2) center department is provided with amortization layer (41).

2. The glass fiber reinforced plastic centrifugal fan with the noise reduction function according to claim 1, characterized in that: the spiral case (2) with one side inner wall fixedly connected with a plurality of bracing pieces (5) that centrifugal fan body (1) was laminated mutually, the bracing piece (5) are kept away from the one end of centrifugal fan body (1) is just facing arc through-hole (3), place board (4) and just facing one side of bracing piece (5) has seted up a plurality of first through-holes (42), first through-hole (42) with the position and the quantity of bracing piece (5) are corresponding, work as place board (4) and be located inside arc through-hole (3), bracing piece (5) are located inside first through-hole (42).

3. The glass fiber reinforced plastic centrifugal fan with the noise reduction function according to claim 2, characterized in that: the first through hole (42) is a countersunk hole, and a threaded hole (51) is formed in one side, which faces the placing plate (4), of the supporting rod (5).

4. The glass fiber reinforced plastic centrifugal fan with the noise reduction function according to claim 3, characterized in that: the placing plate (4) is located on the outer peripheral surface of the outer portion of the volute (2) and is fixedly connected with a baffle (6), and a sealing gasket (61) is arranged on one side, close to the volute (2), of the baffle (6).

5. The glass fiber reinforced plastic centrifugal fan with the noise reduction function according to claim 1, characterized in that: and a taking hole (7) is formed in one side of the placing plate (4) positioned outside the volute (2).