CN2171025Y

CN2171025Y - Blower cover

Info

Publication number: CN2171025Y
Application number: CN 93215234
Authority: CN
Inventors: 郑茂男
Original assignee: San Ford Machinery Co Ltd
Current assignee: San Ford Machinery Co Ltd
Priority date: 1993-06-17
Filing date: 1993-06-17
Publication date: 1994-07-06
Anticipated expiration: 2003-06-17

Abstract

The utility model relates to a blower fan cover. A blade wheel is arranged in the blower fan cover. A shaft of the blade wheel is pivoted on a drive shaft center driven by an electric motor. The blower fan cover is formed by combining and covering two symmetrical casings. The contiguous covered parts of the two casings respectively extend annular edges. A concave embedding groove and a convex embedding groove are punched on the proper position of each annular edge. The embedding grooves can be positioned and embedded mutually. The cross section of an envelope is U-shaped. The envelope is circularly sheathed on the annular edges of the two casings and the annular edges are fixed and knitted, forming the combined type blower fan cover.

Description

Blower cover

The utility model relates to a kind of air blast hood, particularly relates to the combined type air blast hood of a kind of (being commonly called as windmill).

The today of standing in great numbers everywhere in each manufacturing works, no matter its ventilation equipment or dust-precipitating system etc. all need to use blower to be arranged, blow, but the housing of blower all was to form with the welding driving fit when factory makes haply in the past, and in addition whole again vanning is carried to on-the-spot the installation; Because of its housing is integrally welded, so it is bulky and weight is big, so seem in vanning carrying and when installing and quite to be not easy and inconvenience, when damaging or maintain, fixing because of welding, so very inconvenience on repairing more increases the puzzlement of dealer's after sales service.

Main purpose of the present utility model is to provide a kind of air blast hood, and the air blast hood is to constitute with compound mode, so, do not account for packaging volume during carrying, and easy and convenient when installing, when maintenance is repaired simple and easy especially rapidly.

According to a kind of air blast hood provided by the utility model, it is characterized in that: the air blast hood covers institute mutually by two symmetrical housings and forms, and respectively be provided with a ring edge in the adjacent portion of covering of two housings, and the big envelope of a U type is set on the ring edge of two housings, and make big envelope wherein an end utilize screw locking, and be installed on two housings after covering, the other end then is provided with a ring lock sheet, can pass and be installed on the auricle of the two housing the other ends by screw, impel two housing involutions affixed.

Below by most preferred embodiment and accompanying drawing air blast hood of the present utility model is elaborated, in the accompanying drawing:

Fig. 1 is the combination view of the utility model preferred embodiment.

Fig. 2 is the utility model preferred embodiment worm's eye view.

Fig. 3 is the B-B sectional view of Fig. 2.

Fig. 4 is the C-C sectional view of Fig. 2.

Fig. 5 is the A-A sectional view of Fig. 2.

Fig. 6 is the wherein end view of air blast hood export department installing flange of the utility model preferred embodiment.

Fig. 7 is the wherein combined planar schematic representation of air blast hood export department installing flange of the utility model preferred embodiment.

Please cooperate and consult Fig. 1,2, air blast hood of the present utility model is made up of an air blast hood 10, a big envelope 20 and a flange flange30.

Air blast hood 10 is the snail shape by two and the symmetrical mutually housing 11 of shape is formed, two housings 11 respectively have predetermined sagged shape holding space 12, center through hole 13 and export department 14, and desire the ring edge 15 that the place of covering respectively is outward extended with a suitable height at housing 11 peripheries, impel ring edge 15 to form suitable length along the profile of housing 11, one ends (being the origin or beginning of volute) of two ring edge 15 are provided with a relative perforation 151(as shown in Figure 4), 151 1 side blows of boring a hole press be provided with one recessed, one protruding caulking groove 152(as shown in Figure 3), and the other end (being the expansion end of volute) at two ring edge 15 also is provided with two symmetrical perforations 153, can be with an auricle 17 that is provided with hole 171 on it with respect to perforation 153 places, passing hole 171 and perforation 153 and spiral shell with screw 41 establishes with nut 411, and auricle 17 is installed on two housings 11 (as shown in Figure 5), and be provided with a vertical hole 172 on the auricle 17 again; In addition, make rectangle in the export department 14 of two housings 11, and stretch out suitable width and form a balk ring 16, balk ring 16 tops again can a sheathed packing ring 50.

Big envelope 20, it is that tinsel with strip is bent into, and its section is taken the shape of the letter U, and form the conduit 21 of a U-shaped in inside, the width of conduit 21, the degree of depth is two ring edge 15 after cooperating two housings 11 to cover and establishing, and big envelope 20 wherein an end be provided with a positioning hole 22, but the perforation 151 that mat one screw 42 passes positioning hole 22 and above-mentioned ring edge 15, and an end of two housings 11 and big envelope 20 is locked (as shown in Figure 4), its the other end then is symmetrical in auricle 17 set on two housings 11 and is provided with a ring lock sheet 23, be symmetrical in 172 places, vertical hole on the ring lock sheet 23 and also be provided with a through hole 231, after utilizing bolt 43 to pass vertical hole 172 and through hole 231, lock a nut 431 again, can make big envelope 20 terminal affixed with air blast hood 10.

Flange 30, see also shown in Fig. 6,7, formed with lamellar body 31 butt joint mutually that two end surface shape are the ㄇ type, and top one side is provided with a breach 32, the side of breach 32 extends internally again and is formed with a caulking groove 33, impels to lack 32 export department's 14 end faces that just are flattened on air blast hood 10, and balk ring 16 and packing ring 50 then can be stretched and be located in the caulking groove 33, and make flange 30 obtain strong fix, and be provided with several circular holes 34 again at the periphery of flange 30.

The effect that the utility model combined type air blast hood institute expectability is reached is presented below:

When desire makes up, please consult shown in Figure 1 again, earlier that a pair of caulking groove 152 on two housings, the 11 ring edge 15 is aligned with each other chimeric, the ring edge 15 of two housings 11 like this gets final product positioned in alignment, the perforation 153 of ring edge 15 the other ends, then can pass by screw 41, and auricle 17 is fixed thereon, can make two housings, 11 temporary transient acquisitions locate by this; Then, positioning hole 22 with big envelope 20 1 ends is aligned in the perforation 151 that encircles on the edge 15 again, and pass positioning hole 22 and bore a hole 151 with screw 42, lock nut 421 again, can make an end and two housings 11 affixed (as shown in Figure 4) of big envelope 20, so, the two ends of two housings 11 have obtained respectively to fix.

Again big envelope 20 is given around being coated on the ring edge 15, impel its inner conduit 21 just to be set on the ring edge 15, and make the ring lock sheet 23 of big envelope 20 ends and the auricle 17 that locks on two housings 11 in advance be the state of being oppositely arranged, at last, as long as after passing vertical hole 172 and through hole 231 with bolt 43, lock a nut 431 again, big envelope 20 is located on the ring edge 15 of housing 11 fully, and be combined into a complete air blast hood 10, and impel the state of two housings, 11 no delamination, and can be firmly affixed.

In addition, see also shown in Figure 7, the lamellar body 31 of flange 30 is laterally inserted from the side of export department 14 respectively, just make caulking groove 33 embeddings on balk ring 16 and packing ring 50, to keep the tightness of 16 of flange 30 and balk rings, the circular hole 34 on the flange 30 then can be waited until with the flange 61 of airduct 60 and be combined usefulness.

What deserves to be mentioned is, two housings 11 of the present utility model are before desiring to cover, holding space 12 places of two housings 11 axle in advance establish an impeller, the axle center of impeller is by the center through hole 13 of housing 11, so that accept the driving of motor power, impeller and motor are because of being to belong to the prior art part, so do not show on the diagram.

By the above generally as can be known: air blast hood of the present utility model, because of it has the characteristic of combination, thus can eliminate in the past because of integrally welded, and cause that volume is big, weight big, carrying is inconvenient, install and maintenance such as is not easy at disappearance; And the utility model is to utilize big envelope 20 to give involution to connect airtight, thus be difficult difficulty and shortcoming such as time-consuming toward welding processing, and only need loosen big envelope 20 during repair and maintenance and get final product rapair and maintenance.

In sum, the technological means that the utility model embodiment is disclosed, its simple structure, to make assembly easy, and can reach the practical effect of expection.

Claims

1, a kind of air blast hood, its inside is equipped with an impeller, and the impeller shaft pivot is characterized in that on the electric motor driven driving axle center in being subjected to:

The air blast hood covers institute by two symmetrical housings to be formed, and respectively is outward extended with a ring edge in the portion in adjacent the covering of two housings, and ring is arranged with the big envelope that section takes the shape of the letter U on the edge, and big envelope is along the ring edge to be set in around mode and encircles on the edge.

2, according to the described air blast hood of claim 1, it is characterized in that: an end of big envelope locks on the two housing ring edge that are linked in together by screw, the other end of big envelope is installed with a ring lock sheet, the position of the described ring lock sheet of two housings symmetry is provided with an auricle, ring lock sheet and auricle pass by bolt and lock with nut, and two housing involutions are affixed.

3, according to the described air blast hood of claim 1, it is characterized in that: two housings are in the adjacent position that covers, and that punching press is formed with is one recessed, a protruding caulking groove, and it is chimeric mutually.

4, according to the described air blast hood of claim 1, it is characterized in that: each correspondence of the outlet end of two housings is extended with a balk ring, and it is arranged with a flange, and the flange inner edge is concaved with caulking groove and is embedded mutually for combining an airduct with balk ring.