CN2297850Y - Backpack sprayer - Google Patents

Abstract

The utility model relates to a knapsack sprayer. A liquid inlet of a medicine liquid box is provided with a screwing cover with screw threads, a sealing cushion ring is arranged in the screwing cover with screw threads, and a check air inlet valve is arranged in the screwing cover with screw threads. A telescopic corrugated sealing cylinder is arranged above a pump cylinder, and a spray rod is composed of a telescopic sleeve barrel-shaped extending pipe. The connecting position of a sleeve barrel of the spray rod is sealed by the sealing cushion ring and is fastened through screw threads. A liquid spraying switch is a piston type switch with a spring, and the upper and the lower ends of a sleeve barrel of the liquid spraying switch are provided with sealing cushion rings. A measuring cylinder is also arranged on the medicine liquid box. The utility model has the advantages of high sealing performance, accurate dosage concentration, convenient spraying for a near and a close distances, convenient use, convenient storage, etc. The utility model is suitable for spraying, medicine application, and fertilizer application for crops, fruit trees, trees, etc.

Description

A kind of knapsack sprayer

The utility model relates to a kind of agroatomizer, the knapsack sprayer of particularly a kind of suitable crops and fruit tree spraying dispenser, fertilising.

Existing commercially available agricultural knapsack sprayer is consistent for many years structure, in use has more shortcoming: one, sealing are poor, and soup easily spills from inlet, pump barrel top, switch etc., pollution user's clothes and health; Two, soup preparation is dense useless inaccurate, inconvenient, easily causes the injury to plant of the waste of medicine and medicine; Three, the spraying close together is difficult for spraying to distant place, eminence crop; Four, shake handle and can not roll over and put, deposit inconvenient or the like.

The purpose of this utility model is intended to overcome the deficiency of above-mentioned knapsack sprayer, the novel knapsack sprayer that provide a kind of high leakproofness, the concentration of making up a prescription is accurate, can make things convenient for far and near distance spray pesticide, fertilising.

The purpose of this utility model is to realize like this: improve on now commercially available knapsack sprayer structure, whole sprayer comprises spray tank, liquid pump barrel, shakes handle, hydrojet switch, catheter, spray boom, shower nozzle are formed.The screw thread that the place, liquid inlet of its spray tank is provided with the built-in gasket circle screws lid, is provided with the check intake valve in this lid, makes air can enter spray tank, prevents that soup from spilling; Above the liquid pump barrel, be provided with telescopic corrugated sealing drum, do not spill soup when pump is moved up and down; Spray boom is that telescopic sleeve shape extension constitutes, and by the screw threads for fastening of seal washer sealing on it, makes extension fix and seal in the sleeve junction of every joint extension; The hydrojet switch that links to each other with the spray boom afterbody is a spring piston formula switch, and the sleeve upper and lower end of this switch is provided with seal washer, keeps sealing to guarantee switch at " opening " and " pass " arbitrary state.

On spray tank, be provided with fixing band scale of clip and transparent graduated cylinder.

The protruding axle head that shakes handle links to each other with rotating shaft, and opens the fixing collapsible handle that shakes that constitutes with spring hitch.

Extension is made up of two joint sleeves at least.

Spray boom, shake handle and be fixed on the spray tank with clip respectively.

The utility model is compared with commercially available knapsack sprayer has these advantages: be equipped with seal member above liquid inlet, pump barrel, in the hydrojet switch, spray boom, make casing under inclination, inversion, duty, all can not spill soup, effectively prevented liquid medicine contamination user's clothes and health, protected that the user's is healthy; Spray boom adopts telescopic extension can make spraying farther, higher, is applicable to spray pesticides such as crops, fruit tree, forest, fertilising use; Configuration one graduated cylinder makes things convenient for spray pesticide on casing, and accurate consumption applies fertilizer; When not using with graduated cylinder, spray boom, shake handle and be fixed on the casing with clip, make entire product integrated.It is very convenient that this sprayer uses, deposits.

Below in conjunction with accompanying drawing the utility model embodiment is described further:

Fig. 1 is the utility model structural representation.

Fig. 2 is Fig. 1 medi-spring piston-type switch structural representation.

Fig. 3 is the collapsible handle arrangement schematic diagram that shakes among Fig. 1.

Fig. 4 is 7 one kinds of structural representations of check intake valve among Fig. 1.

Fig. 5 is check intake valve 7 another kind of structural representations among Fig. 1.

Referring to Fig. 1-Fig. 4, this sprayer by spray tank 1, liquid pump barrel 10, shake handle 13, hydrojet switch 19, spray boom, shower nozzle 14, catheter 5 etc. and constitute.Be provided with one in the side of soup 1 by fixing tool scale of two clips 2 and transparent graduated cylinder 3 (its capacity is between 100--2000ml); One screw thread is set at liquid inlet place to be screwed and covers 6, screw to cover and be placed with seal washer 8 in 6, screw to cover and be provided with a check air valve 7 (but air inlet, can not flow out soup) in 6, this air valve 7 is fixed or is bonded in the bead 29 of the conical inlet channel 28 that screws in 6 and Qi Nei and air inlet spacer screen 30 and constitutes that (bead 29 is stopped by air inlet spacer screen 30 when air inlet, enters air by screw; Bead 29 joins with conicylindrical passage 28 when liquid flows out, and seals inlet channel, prevents that liquid from flowing out); Be provided with the telescopic ripple sealing drum 9 (material plastics) that its pump barrel 10 tops are sealed at the top of pump barrel 10; Spray boom is made of the cover tubular extension 15 of the different sizes of three joints (every joint length 1m), each joint sleeve junction is all with seal washer 16 sealings, by the internal and external threads on the sleeve (17,18) tighten up, slightly little tubular extension 15 (second pipe joint) is after moving up and down, its screw thread 18 is tightened with big slightly tubular extension internal thread 17, and by seal washer 16 sealings, minimum tubular extension 15 tops connect shower nozzle 14, maximum tubular extension 15 afterbodys connect hydrojet switch 19, by piston 24, piston liquid passage 23, piston sleeve 22, seal washer 21, close spring 25 and press handle 20 and constitute a spring piston formula switch, its piston 24 is when handle 20 or spring 25 promotions, sealed by the seal washer 21 that is located in the sleeve 22, the fluid passage 23 on the hand back piston 24 carries out opening state; Fluid passage 23 is connected with the catheter 5 that communicates with air chamber 12 (being fixed on the spray tank 1 with clip) and pump barrel 10; Shake handle 13 and have protruding axle, this protruding axle head head is connected with rotating shaft 27, has an aperture, 26 handles of this hole insertion spring hitch, 13 startup fixations on its protruding axle.Shaking handle 13 needs to take off spring hitch 26 when folding, and handle 13 folds around rotating shaft 27, and folding back is fixing with the clip 11 of spray tank 1 side.

Check intake valve 7 of the present utility model can also be other version, as shown in Figure 5: by covering the aperture of opening in 6 31 and make inlet channel and bonding or screw thread and be fixed on and cover 6 spring thin slice 32 and constitute a check intake valve and (when air enters, push spring thin slice 32 open and enter air screwing, when liquid flows out outward, promote spring leaf 32 and seal aperture 31, prevented liquid leakage effectively); Each sealing ring is rubber washer or plastic washer etc., and each clip is fixed by screw or be bonding or be injection-moulded on the soup casing; Except that spray boom, spring piston formula switch, screw cover 6, check air valve 7, graduated cylinder 3, collapsible shaking handle 13, pump barrel top ripple sealing drum 9 and the fixing hoop 2,4,11, other structure is the prior art of existing knapsack sprayer, and this spray boom can replace the spray boom on other sprayer.

Operating process of the present utility model: take off screwing of liquid inlet place earlier and cover 6 and graduated cylinder 3, measure in the medicine adding spray tank, add the water of dosage then, screw again and cover 6 with graduated cylinder; Shake equal mixed liquor, place graduated cylinder 3 on clip 2; Sprayer is backed on the body, takes off spray boom from the clip 4 of spray tank 1, unscrew extension and be drawn out to the longest till (making spray boom always reach 3m), be tightened again; To shake handle 13 and take off from clip 11, fixing with spring hitch 26, shake handle 13, open switch 19, enter spray pesticide state (spray bar length adds body such as 1.5m height, but dispenser 4.5m place can reach dispenser far away about 5.5m when adding spraying); Unscrew extension 15 after the use, contraction extension 15 also is tightened, and spray boom is placed on the clip 4 handle 13 folding being positioned on the clip 11; Pour out the residue soup at last, clean soup casing 1.

Claims (5)

1. knapsack sprayer, comprise spray tank, the liquid pump barrel, shake handle, catheter, the hydrojet switch, spray boom, shower nozzle is formed, it is characterized in that: the screw thread that the place, liquid inlet of spray tank is provided with the built-in gasket circle screws lid, be provided with the check intake valve in this lid, above the liquid pump barrel, be provided with flexible corrugated sealing drum, spray boom is that telescopic sleeve shape extension constitutes, by the screw threads for fastening of seal washer sealing on it, the hydrojet switch is a spring piston formula switch in the sleeve junction of every joint extension, the sleeve upper and lower side of this switch is provided with seal washer.

2. knapsack sprayer according to claim 1 is characterized in that: be provided with on spray tank with fixing band graduator of clip and transparent graduated cylinder.

3. knapsack sprayer according to claim 1 is characterized in that: the protruding axle head that shakes handle links to each other with rotating shaft, and opens fixing formation folding with spring hitch and shake handle.

4. knapsack sprayer according to claim 1 is characterized in that: extension is made up of two joint sleeves at least.

5. knapsack sprayer according to claim 1 is characterized in that: spray boom, shake handle and be fixed on the spray tank with clip respectively.

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