CN211874822U

CN211874822U - Shell for centrifugal fan

Info

Publication number: CN211874822U
Application number: CN202020389152.6U
Authority: CN
Inventors: 黄大云; 张金永
Original assignee: Shengzhou Shengda Machinery Co ltd
Current assignee: Shengzhou Shengda Machinery Co ltd
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2020-11-06
Anticipated expiration: 2030-03-24

Abstract

The utility model discloses a casing for centrifugal fan relates to the fan accessory, aims at solving the fan blade when the installation maintenance because the fan shell inner space is little and the problem of inconvenient maintenance, and its technical scheme main points are: the shell has seted up the installing port to one side of air intake dorsad, and installing port department can dismantle and be connected with the fixed disk that is used for installing the fan blade, sets up constant head tank and the spacing groove that is central symmetry and sets up on the fixed disk, and fixedly connected with runs through the locating plate and the limiting plate of constant head tank and spacing groove respectively on the shell. The utility model discloses a setting of fixed disk, when changing centrifugal fan blade, can take out centrifugal fan blade from the shell, the installation of the fan blade of being convenient for is maintained, and through the setting of constant head tank, spacing groove, locating plate and spacing groove, the installation of the fixed disk of being convenient for has made things convenient for people to centrifugal fan's equipment maintenance.

Description

Shell for centrifugal fan

Technical Field

The utility model relates to a fan accessory, more specifically say, it relates to a casing for centrifugal fan.

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; a common centrifugal fan consists of an internal centrifugal fan blade and an external shell.

People need install the motor to the casing earlier when equipment centrifugal fan to place the fan blade in the casing from the air intake department of casing, and be connected with the output of motor, because the inside space of casing is narrow, when damage noise production or unable the use appear in centrifugal fan's fan blade, people need change the centrifugal fan blade, but the dismouting of the fan blade of being not convenient for of narrow inner space.

Therefore, a new solution is needed to solve this problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a casing for centrifugal fan, through the setting of fixed disk, when changing centrifugal fan blade, can take out centrifugal fan blade from the shell, the installation of the fan blade of being convenient for is maintained, and through the setting of constant head tank, spacing groove, locating plate and spacing groove, the installation of the fixed disk of being convenient for has made things convenient for people to centrifugal fan's equipment maintenance.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a casing for centrifugal fan, is including the shell of seting up air intake and air outlet, the installing port has been seted up to one side of shell dorsad air intake, installing port department can dismantle the fixed disk that is connected with and is used for installing the fan blade, set up constant head tank and the spacing groove that is central symmetry and sets up on the fixed disk, fixedly connected with runs through the locating plate and the limiting plate of constant head tank and spacing groove respectively on the shell, be equipped with the fixed subassembly that is used for providing fixed disk extrusion shell on locating plate and the limiting plate.

Through adopting above-mentioned technical scheme, through setting up installing port and fixed disk, make people when the centrifugal fan blade is dismantled in the installation, can take out the centrifugal fan blade from the shell through dismantling the fixed disk, then maintain the change to the centrifugal fan blade, set up constant head tank and spacing groove on through the fixed disk, can be when the fixed disk is installed, make fixed slot and spacing groove aim at locating plate and the limiting plate on the shell fast, the installation of the fixed disk of being convenient for, and through the fixed subassembly on limiting plate and the locating plate, can play the squeezing action to the fixed disk, thereby restriction fixed disk and shell separation.

The utility model discloses further set up to: the fixed component comprises a limiting block fixedly connected to the limiting plate, one side, facing the shell, of the limiting block is provided with a first inclined surface, the inclined surface of the first inclined surface is arranged towards the direction of the shell, the fixing plate is fixedly connected with a supporting block located on one side of the limiting groove, and one side, facing away from the fixing plate, of the supporting block is provided with an extrusion surface parallel to the first inclined surface.

Through adopting above-mentioned technical scheme, through the stopper on the limiting plate and the piece that supports on the fixed disk, make the fixed disk when the installation, the limiting plate passes from the spacing inslot to make the inclined plane one of stopper and the extrusion face laminating of supporting the piece, thereby play the effect of location, and support the piece through the spacing groove extrusion, play the effect of pre-fixing to the fixed disk, be convenient for the follow-up installation operation to the fixed disk of people.

The utility model discloses further set up to: fixedly connected with is located the base of constant head tank one side on the fixed disk, the base sets up along the length direction of constant head tank, its one side that the base is towards the constant head tank is equipped with inclined plane two, the inclined plane of inclined plane two sets up towards the direction of fixed disk dorsad, set up the locating hole that sets up along constant head tank length direction on the locating plate, locating hole female connection has fixing bolt.

Through adopting above-mentioned technical scheme, when stopper and the conflict laminating of piece, through the locating hole of seting up on the locating plate, make fixing bolt pass locating hole extrusion base's inclined plane two to make the fixed disk hug closely the mounting disc under base and fixing bolt's mutual squeezing action, because constant head tank and spacing groove are central symmetry and set up, thereby make the stable pre-fixing of fixed disk on the shell.

The utility model discloses further set up to: the fixing bolt comprises a thread section and a rotating part fixedly connected with the thread section, the rotating part is in a hexagonal frustum shape, and a large end of the rotating part is fixedly connected with the thread section.

Through adopting above-mentioned technical scheme, fixing bolt has the bolt section and revolves the portion and constitute, because revolve the portion and be hexagonal terrace of edges form to when rotating fixing bolt, the hexagonal sleeve that can be suitable for multiple different models rotates fixing bolt.

The utility model discloses further set up to: one side of the fixed disc, which is back to the shell, is fixedly connected with a plurality of arched handles, and two ends of each handle are fixedly connected with the fixed disc through bolts.

Through adopting above-mentioned technical scheme, through the setting that is arched hand (hold), when people dismantle the fixed disk, can hold the mounting disc through the hand (hold), the operation of the people's installation of being convenient for was dismantled.

The utility model discloses further set up to: the circle center of the fixed disc is provided with a shaft hole, and a plurality of mounting holes are distributed in the peripheral annular array of the shaft hole.

Through adopting above-mentioned technical scheme, through the setting in shaft hole for when installation centrifugal fan blade, can pass the shaft hole with the pivot and be connected with centrifugal fan blade, and through the setting of mounting hole, can pass through the mounting hole with the bearing frame and install at the fixed disk, thereby make the pivot run through the bearing frame and rotate with the fixed disk and be connected, reduce the friction between pivot and the fixed disk.

To sum up, the utility model discloses following beneficial effect has:

through setting up installing port and fixed disk, make people when the centrifugal fan blade is dismantled in the installation, can take out the centrifugal fan blade from the shell through dismantling the fixed disk, then maintain the change to the centrifugal fan blade, and set up constant head tank and spacing groove on through the fixed disk, can be when the installation fixed disk, make fixed slot and spacing groove aim at locating plate and the limiting plate on the shell fast, the installation of the fixed disk of being convenient for, through the stopper, support the setting of piece and base, can be when the installation fixed disk, can be with the stable installation on the shell of fixed disk, and through the setting of hand (hold), be convenient for when dismantling the installation fixed disk, hold the fixed disk.

Drawings

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

FIG. 2 is a second schematic structural view of the present invention;

FIG. 3 is an exploded view of the present invention;

FIG. 4 is an enlarged view of the portion B of FIG. 1;

fig. 5 is an enlarged schematic view of a portion a of fig. 1.

In the figure: 1. an air inlet; 2. a housing; 3. an installation port; 4. fixing the disc; 5. positioning a groove; 6. a limiting groove; 7. positioning a plate; 8. a limiting plate; 9. a limiting block; 10. a resisting block; 11. a base; 12. fixing the bolt; 13. a threaded segment; 14. a rotating part; 15. a handle; 16. a shaft hole; 17. and (7) installing holes.

Detailed Description

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

A shell for a centrifugal fan is shown in figures 1 to 5 and comprises a shell 2 provided with an air inlet 1 and an air outlet, one side of the shell 2, which is back to the air inlet 1, is provided with a mounting port 3, the mounting port 3 is detachably connected with a fixed disk 4 for mounting fan blades through bolts, the circle center of the fixed disk 4 is provided with a shaft hole 16, a plurality of mounting holes 17 are distributed on the peripheral annular array of the shaft hole 16, so that a bearing seat can be mounted at the circle center of the fixed disk 4 in a bolt connection mode, one side of the fixed disk 4, which is back to the shell 2, is fixedly connected with two arched handles 15, two ends of each handle 15 are fixedly connected with the fixed disk 4 through bolts, the fixed disk 4 is provided with a positioning groove 5 and a limiting groove 6 which are arranged in central symmetry, the shell 2 is fixedly connected with a positioning plate 7 and a limiting plate 8 which respectively penetrate, one side of a limiting block 9 facing the shell 2 is processed into a first inclined surface through a chamfer, the inclined surface of the first inclined surface is arranged towards the shell 2, a supporting block 10 positioned at one side of a limiting groove 6 is fixedly connected onto the fixed disk 4, one side of the supporting block 10 facing away from the fixed disk 4 is chamfered to form a pressing surface arranged in parallel with the first inclined surface, a base 11 positioned at one side of the positioning groove 5 is fixedly connected onto the fixed disk 4, the base 11 is arranged along the length direction of the positioning groove 5, one side of the base 11 facing the positioning groove 5 is provided with a second inclined surface, the inclined surface of the second inclined surface is arranged in a direction facing away from the fixed disk 4, a positioning hole arranged along the length direction of the positioning groove 5 is formed on the positioning plate 7, a fixing bolt 12 is in threaded connection with the positioning hole, the fixing bolt 12 comprises a threaded section 13 and a rotating section 14 fixedly connected with, the fixing assembly is formed by the arrangement of the limiting block 9 and the base 11, so that the fixing disc 4 is connected with the shell 2.

When the fan is assembled, firstly, the bearing seat is fixedly connected with the fixed disk 4 through the mounting hole 17 in a bolt connection mode, then the rotating shaft penetrates through the bearing seat, the centrifugal fan blade is fixedly mounted on the rotating shaft, the centrifugal fan blade is positioned on one side, opposite to the handle 15, of the fixed disk 4, then the fixed disk 4 is held by the handle 15, the fixed disk 4 approaches to the mounting opening 3 direction of the shell 2, through the arrangement of the positioning groove 5 and the limiting groove 6 on the fixed disk 4, when the fixed disk 4 approaches to the shell 2, the limiting plate 8 firstly penetrates through the limiting groove 6, so that the extrusion surface of the abutting block 10 is contacted with the inclined surface of the limiting block 9, then the fixed disk 4 is moved, the abutting block 10 is moved along the inclined surface, when the abutting block 10 is completely abutted against the limiting block 9, the positioning plate 7 penetrates through the positioning groove 5 on the fixed disk 4, then the fixing bolt 12 is screwed, the fixing bolt 12 can extrude the second inclined plane of the base 11, so that the fixing disc 4 is close to the housing 2, and is limited on the surface of the base 11 through the fixing bolt 12, the fixing disc 4 can be stably pre-fixed on the housing 2 by matching with the limiting block 9 and the abutting block 10, then the housing 2 of the fixing disc 4 is connected through the bolt, so that when people drive the centrifugal fan, the centrifugal fan blade can be driven to rotate only by driving the rotating shaft, when the centrifugal fan blade is deformed and damaged after being used for a long time, people only need to disassemble the bolt on the periphery of the mounting disc, then the fixing bolt 12 is taken down from the positioning plate 7, so that the separation of the fixing disc 4 and the housing 2 is realized, people can quickly take out the centrifugal fan blade in the housing 2 for subsequent maintenance and replacement, and the problem that people need to disassemble the housing 2 when installing and disassembling the centrifugal fan blade in the prior art is solved, limited by the size of the inner cavity of the shell 2, the centrifugal fan blade is inconvenient to replace.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a casing for centrifugal fan, is including shell (2) of seting up air intake (1) and air outlet, its characterized in that: installing port (3) have been seted up to one side of shell (2) dorsad air intake (1), installing port (3) department can be dismantled and be connected with fixed disk (4) that are used for installing the fan blade, set up constant head tank (5) and spacing groove (6) that are central symmetry and set up on fixed disk (4), fixedly connected with runs through locating plate (7) and limiting plate (8) of constant head tank (5) and spacing groove (6) respectively on shell (2), be equipped with the fixed subassembly that is used for providing fixed disk (4) extrusion shell (2) on locating plate (7) and limiting plate (8).

2. The casing for the centrifugal fan according to claim 1, characterized in that: fixed subassembly includes stopper (9) of fixed connection on limiting plate (8), stopper (9) are equipped with inclined plane one towards one side of shell (2), the inclined plane of inclined plane one sets up towards shell (2) direction, fixedly connected with is located support piece (10) of spacing groove (6) one side on fixed disk (4), support piece (10) one side of fixed disk (4) dorsad be equipped with an inclined plane parallel arrangement's extrusion face.

3. The casing for the centrifugal fan according to claim 2, characterized in that: fixedly connected with is located base (11) of constant head tank (5) one side on fixed disk (4), the length direction setting of constant head tank (5) is followed in base (11), its base (11) are equipped with inclined plane two towards one side of constant head tank (5), the direction setting of the inclined plane dorsad fixed disk (4) of inclined plane two, set up the locating hole that sets up along constant head tank (5) length direction on locating plate (7), locating hole female connection has fixing bolt (12).

4. The casing for the centrifugal fan according to claim 3, characterized in that: the fixing bolt (12) comprises a thread section (13) and a rotating part (14) fixedly connected with the thread section (13), the rotating part (14) is in a hexagonal frustum shape, and a large end of the rotating part (14) is fixedly connected with the thread section (13).

5. The casing for the centrifugal fan according to claim 1, characterized in that: fixed disk (4) one side fixedly connected with of shell (2) dorsad a plurality of arch hand (15) that are, the both ends of hand (15) are through bolt and fixed disk (4) fixed connection.

6. The casing for the centrifugal fan according to claim 1, characterized in that: the circle center of the fixed disc (4) is provided with a shaft hole (16), and a plurality of mounting holes (17) are distributed on the periphery of the shaft hole (16) in an annular array mode.