CN2301063Y - Casing for improved dense fog duster - Google Patents

Abstract

The utility model relates to a duster, particularly a casing for an improved dense fog duster. The casing is composed of a casing 1, a valve 2, a discharging pipe 3; the inner pipe 4 of the discharging pipe 3, a fixing foot 5, a fixing foot sleeve 6, a flange 7 and a discharging opening 8; besides, the utility model is provided with an air intake through hole 9; the casing 1, the discharging pipe 3, the fixing foot 5, the flange 7 and the discharging opening 8 are one-step injection molding, wherein, the air intake through hole 9 is provided with a net cover. Besides, a metal nut is prearranged in the fixing foot sleeve 6.

Description

Improved mist duster casing

The utility model is relevant with duster, particularly a kind of improved backpack mist duster casing.

Chang Yong backpack mist duster casing was to adopt the iron sheet punching press in the past, made through technologies such as artificial wind weldering and manual rivets.Because the effect of this blower fan is mainly sprayed insecticide, need long-term contact chemical substance, generally through the use in 2 years, just because of corrosion damages, in addition, because its processing technology complexity, the cost height increased the weight of user's burden to the casing that iron sheet is made.

Chinese patent 96230702.5 has proposed a kind of backpack mist duster casing, as shown in Figure 1, comprise casing, discharge pipe, valve and fixing feet, two left and right half casings that casing, discharge pipe and fixing feet are combined by injection mo(u)lding constitute, the shell edge position of the mutual involutory contact of left and right half casing is respectively recessed (protruding), protruding (recessed) structure, and the fixedly flange of usefulness is arranged on the periphery of this left and right half casing.

Owing to adopted the casing of injection mo(u)lding, discharge pipe and fixing feet etc. are all finished by the one-shot forming injection moulding, like this, if respectively left and right half casing of injection formed, valve, fixedly manage in footmuff and the discharge pipe, valve is inserted the discharge pipe position, pipe box in the discharge pipe is gone in the discharge pipe, then with left and right half casing to mating, the location that matches, concavo-convex position puts fixedly footmuff, the connecting bolt of screwing on, the processing and the installation process of casing have just been finished.Whole making and assembly technology are oversimplified, and cost obviously descends.In addition,, strengthened the corrosion resistance of casing greatly, prolonged service life because casing is that plastics are made.

But this casing still has certain defective, and for example circular air intake through hole 9 easy inspiration foreign material as cotton, leaf etc., can produce fault.In addition, the footmuff place is preset nut not, causes inconvenience is installed.

So the purpose of this utility model provides a kind of improved mist duster casing safe in utilization, easy for installation.

The purpose of this utility model is realized by following mode, a kind of backpack mist duster casing is promptly proposed, comprise casing 1, discharge pipe 3, valve 2 and fixing feet 5, two left and right half casings that casing, discharge pipe and fixing feet are combined by injection mo(u)lding constitute, it is characterized in that, a guard 24 is installed on air intake through hole 9, be screwed on the casing 1 by hold-down screw 26, guard 24 can be made of plastics, can be anticorrosive.

In addition, in footmuff 6, preset inner nut 28, easy and simple to handle when being convenient to install, usually, can adopt metal nuts.

Below in conjunction with drawings and Examples, describe the purpose of this utility model, characteristic and advantage in detail.

Fig. 1 is the schematic diagram of existing backpack mist duster with casing,

Fig. 2 is the front view of the utility model one embodiment.

With reference to Fig. 2 present embodiment by casing 1, valve 2, discharge pipe 3, fixing feet 5, fixedly footmuff 6, flange 7 and air outlet 8 constitute.Casing 1 is made of a left side half casing and right half casing.Have round air intake through hole 9 on the lateral surface of casing, periphery is provided with 9 independent flanges 7, and flange central authorities have through hole, and the upper left corner of casing is provided with discharge pipe 3, and the lower right corner is provided with air outlet 8 and is provided with fixing feet 5 in the bottom of casing 1.

Casing and flange 7, discharge pipe 3, air outlet 8, fixing feet 5 be by the injection moulding one-shot forming, and preset metal nuts 11 at the lead to the hole site of flange central authorities.Right half outside of casing has the circular hole 10 that is connected with frame.Plastics guard 24 is housed on the air intake through hole 9, on three symmetric positions, is screwed on the casing 1, can play the effect of blocking external foreign material, avoid sucking the air channel with screw 26.

Simultaneously,, preset metal nuts 28 therein and aimed at, can easily bolt inserted and tighten during assembling, avoided the installation inconvenience that causes because of local location is narrow with preceding with the hole on the fixing feet 5 for ease of footmuff 6 is installed.

Though narrated embodiment of the present utility model, the technical staff still can make many improvement.

Claims (3)

1, a kind of improved mist duster casing comprises casing, air intake through hole, discharge pipe, valve and fixing feet, it is characterized in that, described air intake through hole is equipped with guard.

2, as claims 1 described casing, it is further characterized in that described guard is fixed by screw.

3, casing as claimed in claim 1 or 2, it is further characterized in that, presets inner nut in the footmuff of described fixing feet.

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