CN2454042Y - Backpack sprayer - Google Patents

Abstract

The utility model relates to a backpack sprayer, which belongs to a plant protection utensil. The utility model is composed of a liquid medicine barrel 1, a sealing mechanism, a compression rod mechanism, a pump barrel mechanism, an air chamber 10, a piston rod 9, a liquid outlet pipe 5 and a spray lance 13. The pump barrel mechanism and the air chamber 10 are arranged in the liquid medicine barrel 1, and the air chamber 10 is positioned at the upper part of the pump barrel mechanism. The piston rod 9 is penetrated through the air chamber 10, the piston rod 9 is communicated with the air chamber 10, the lower end of the piston rod is matched with the pump barrel mechanism, the upper end of the piston rod is extended out of a barrel body of the liquid medicine barrel 1, the upper end of the piston rod is communicated with the liquid outlet 5, and the upper end of the piston is connected with the compression rod mechanism. As lots of components are omitted, the utility model has simple structure and no physic liquor leakage which attacks the user`s body of the physic liquor.

Description

Knapsack sprayer

The utility model is a kind of knapsack sprayer, belongs to the plant protection utensil.

When the work, soup is easily taken out of outside the bucket with piston rod, makes medicinal herb grower user be subjected to the hardship of soup infringement deeply, causes the incident of pesticide poisoning to happen occasionally therefrom in the past knapsack sprayer.Just Given this, the Chinese patent patent No. is 95217270.4 to disclose a kind of " sprayer of anti-leak ", is intended to overcome above-mentioned defective.But for overcoming above-mentioned defective, the whole technical proposal design is not only complicated, and the described sprayer of this patent still exists other drainage hidden danger, says that in a sense this drainage hidden danger is greater than described soup and easily takes the outer order of severity of staving out of with piston rod.Because it is that air chamber is received outside the staving of medicinal liquor barrel, drain pipe is connected with air chamber again, spray gun is connected with drain pipe.As seen, the connecting portion of air chamber and medicinal liquor barrel is difficult to reach gratifying seal degree, use a period of time still more after, the leakage meeting is more serious; Also have, there is described leakage hidden danger equally in the connecting portion of drain pipe and air chamber.

The purpose of this utility model is will provide a kind of not only simple in structure, but also the knapsack sprayer of soup can not occur leaking.

The purpose of this utility model reaches like this, a kind of knapsack sprayer, form by medicinal liquor barrel 1, sealing mechanism, pressure lever mechanism, pump barrel mechanism, air chamber 10, piston rod 9, drain pipe 5, spray gun 13, described pump barrel mechanism, air chamber 10 all are located in the medicinal liquor barrel 1, and air chamber 10 is positioned at the top of pump barrel mechanism; Piston rod 9 passed through air chamber 10, and communicated with air chamber 10, matched with pump barrel mechanism in its lower end, and the upper end extends outside the staving of medicinal liquor barrel 1, communicated with drain pipe 5, and was connected with pressure lever mechanism.

The utility model both simplified the structure because of having saved a large amount of parts owing to adopted above-mentioned design, can not occur again leaking soup and the health of attacking medicinal herb grower user.

Below in conjunction with accompanying drawing the utility model is further described below.

Accompanying drawing is the utility model structure chart.

Pump barrel of the present utility model mechanism is by base 21, pump barrel 15, valve 28, press valve piece 29, sealing ring 17, piston 16, ball valve 18 constitutes, base 21 is installed with in one of the staving inner bottom part of medicinal liquor barrel 1 side, be provided with a liquid head piece 24 in its underpart, central part offers some inlet openings 26 at an upper portion thereof, pump barrel 15 is fixed on the top of base 21, and some inlet openings 26 are contained in it, valve 28 places in the pump barrel 15, and corresponding to described inlet opening 26, on this valve 28, following movable and realize cap seal/leave inlet opening 26, press valve piece 29 to be stacked on the valve 28, sealing ring 17 is nested with on piston 16, plays sealing between piston 16 and pump barrel 15 inwalls by it, and piston 16 is installed with the end, lower end at piston rod 9, steel ball 18 places presses on the valve piece 29, and corresponding to the port of piston rod 9 lower ends.

Piston rod 9 of the present utility model realizes that by the through hole on it 12 its cavity volume communicates with the cavity volume of air chamber 10, and by fully fixing between the upper and lower part of a pair of fixing collar 19 realizations and air chamber 10.The upper end of piston rod 9 extends to outside the staving of medicinal liquor barrel 1, and is sealed by sealing mechanism, specifically is that the assembly by sealing ring 6, seal receptacle 8, seal cover 3 is realized.The upper end of piston rod 9 communicates with an end of drain pipe 5, and the other end of drain pipe 5 connects spray gun 13.

Pressure lever mechanism of the present utility model is made of depression bar 23, little axle 20, pull bar 11, the base portion of depression bar 23 and little axle 20 articulate, little axle 20 is fixed on the bottom of medicinal liquor barrel, pull bar 11 lower ends are connected with depression bar 23 by leg 22, and then sell into realizing being connected with piston rod 9 built in the axis hole 4 of piston rod 9 top ends in advance by split pin 7 upper end.

The utility model is to come work like this, opens bung 2, and soup is added in the medicinal liquor barrel 1, builds bung 2 then, by a pair of braces 14 the utility model is born in both shoulders.One holds the handle 27 of depression bar 23, and the alternating movement of carrying, pressing down on doing, and another hand grips spray gun 13.When last pressure-raising bar 23, pull bar 11 is carried on just, and piston rod 9 is carried on also, and under the effect of negative pressure, valve 28 is opened, and soup just enters in the cavity of base 21 from liquid head piece 24, enters pump barrel 15 inner chambers of piston 16 lower portion by inlet opening 26; Following moulded rod 23, pull bar 11, piston rod 9 move down respectively, piston 16 also moves down, thereby opens ball valve 18, and the part of soup flows into drain pipe 5, spray gun 13 by the cavity of piston rod 9, another part just enters in the air chamber 10 from through hole 12, during backhaul, also promptly go up pressure-raising bar 23 again, the soup via through holes 12 under the effect of pressure reduction behind the pressurized in the air chamber 10 enters the cavity of piston rod 9, enter drain pipe 5 again, go out via spray gun 13 sprayings at last.Because pump barrel mechanism, air chamber 10 are all in the staving of medicinal liquor barrel 1, so in whole use, there is no fear of attacking the operator because of soup thing seepage.

Claims (2)

1, a kind of knapsack sprayer, form by medicinal liquor barrel (1), sealing mechanism, pressure lever mechanism, pump barrel mechanism, air chamber (10), piston rod (9), drain pipe (5), spray gun (13), it is characterized in that described pump barrel mechanism, air chamber (10) all are located in the medicinal liquor barrel (1), air chamber (10) is positioned at the top of pump barrel mechanism; Piston rod (9) passed through air chamber (10), and communicated with air chamber (10), matched with pump barrel mechanism in its lower end, and the upper end extends outside the staving of medicinal liquor barrel (1), communicated with drain pipe (5), and was connected with pressure lever mechanism.

2, knapsack sprayer according to claim 1, it is characterized in that pump barrel mechanism is by base (21), pump barrel (15), valve (28), press valve piece (29), sealing ring (17), piston (16), ball valve (18) constitutes, base (21) is installed with in one of the staving inner bottom part of medicinal liquor barrel (1) side, be provided with a liquid head piece (24) in its underpart, central part offers some inlet openings (26) at an upper portion thereof, pump barrel (15) is fixed on the top of base (21), and some inlet openings (26) are contained in it, valve (28) places in the pump barrel (15), and corresponding to described inlet opening (26), on this valve (28), following movable and realize cap seal/leave inlet opening (26), press valve piece (29) to be stacked on the valve (28), sealing ring (17) is nested with on piston (16), play sealing between piston (16) and pump barrel (15) inwall by it, piston (16) is installed with the end, lower end at piston rod (9), steel ball (18) places presses on the valve piece (29), and corresponding to the port of piston rod (9) lower end.

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