CN2811589Y

CN2811589Y - Improved manual-operated pump body

Info

Publication number: CN2811589Y
Application number: CN 200520004244
Authority: CN
Inventors: 刘名龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-02-06
Filing date: 2005-02-06
Publication date: 2006-08-30
Anticipated expiration: 2015-02-06

Abstract

The utility model relates to a pump body of a manual pump, particularly a pump body of an adjustable and leakproof manual pump of a knapsack sprayer. As external threads of a lower circle at the head part of the pump body are assembled with screw nuts in a screwing mode, the utility model has the function of adjusting the dimension of the body part of the pump body. A conical outer circle on the upper section of the body part is tightly connected with an inner circle of a double-linkage pad. The upper section of the double-linkage pad is pressed by adjusting the screw nuts to enhance the tightness and the steadiness between the pump body and a circular hole at the top part of a water storing tank. Thus, the pump body of the utility model solves the problem that a leakproof manual pump can not be generally arranged on the existing knapsack sprayer and the utility model has the advantage of simple and convenient installation.

Description

A kind of hand pump pump housing of improvement

Technical field the utility model relates to a kind of pump pump formula and bears the sprayer hand pump, particularly bears the adjustable leakproof hand pump of the sprayer pump housing.

The just at present domestic still a large amount of pump pump formulas of using of background technique are born sprayer, bring into use from the sixties still to be domestic agricultural plant protection main tool till now.Along with the prolongation of national agricultural production land contract system, the main tool of agricultural plant protection will be still.

But this sprayer also has is worth improved problem:

One, for a long time the pump pump to have the medicine liquid leakage phenomenon be the problem of generality.The reason that causes the phenomenon that leaks outside has two aspects, after its 1 iron stopper rod uses 1-2 time, loses seal action because of being subjected to the roughening of agricultural chemicals corrosion surface to cause Sealing to be damaged; It is 2 because of water storage tank is to adopt blow molding technology to make, and the inside armored pump place can out-of-flatness, the used flat gasket of pump pump is installed is difficult to cooperate with out-of-flatness face and does not reach sealing, thereby cause emitting the leakage phenomenon.

Two, the pump pump is installed and to be stretched out head in the water storage tank outward and push up with case and be connected, must remove component such as water valve, air chamber when the replacing pump housing is installed just can finish, and pump housing inwall is worn and torn by the friction of piston to need often to change easily, easy of like this damage of components such as outlet valve, air chambers, increase maintenance expenses.Liquid medicine must be poured out outside the case when under the unexhausted situation of water storage tank liquid medicine, needing to repair hand pump or changing the pump housing and just can be finished, like this, waste time and energy and also can cause the waste of liquid medicine.

The problem that above-mentioned prior art exists is solved by " a kind of adjustable leakproof hand pump of sprayer of bearing " patented technology.The patented technology scheme that solves the prior art problem has been documented in the patent No. ZL02247615.6 patent text.

But new problem has appearred in adjustable leakproof hand pump when assembling with the prior art water storage tank, reason is: unified drawing though prior art is born the sprayer whole nation, it is variant to the size at top that but the water storage tank that each manufacturer produced middle part takes on the water valve circular hole, make adjustable leakproof hand pump can not be generally and prior art be used.

Summary of the invention is in order to solve above-mentioned new problem, and the utility model proposes a kind of hand pump pump housing of improvement to the public.

The utility model has adopted following technical measures:

The pump housing (1) is divided into head and body portion, cylindrical is head (2) than big one section of body portion, cylindrical is body portion (3) than little one section of head, one section of circle is provided with outside thread (4) to be connected with the nut of setting up (5) spinning under the head (2), can regulate the height dimension of body portion (3) by turn nut (5).

The utility model has also adopted following technical measures:

Upper end something or somebody to fall back on portion (2) lower end of body portion (3) have additional one outer through the tapered cylindrical (6) bigger than body portion (3) to insert in duplex pad (7) hole, jam-packed duplex pad (7) strengthens tightness and the steadiness between tapered cylindrical (6) and water storage tank (8) top armored pump circular hole (9).

Description of drawings details of the present utility model is by providing in the drawings and Examples:

Fig. 1 is the utility model pump housing shape assumption diagram;

Fig. 2 is the utility model pump housing and nut erection drawing;

Fig. 3 is the utility model pump housing and water storage tank and accessory erection drawing.

Embodiment further specifies structure of the present utility model and assembling situation below in conjunction with accompanying drawing.

As can see from Figure 1: the pump housing (1) descends the outside thread (4) of circle, tapered cylindrical (6) structure of body portion (3) epimere to form by cylindrical head (2) and cylindrical body portion (3), the head (2) littler than head (2) bigger than body portion (3).

Can see among Fig. 2: head (2) outside thread (4) of circle has down assembled nut (5).When assembling with water storage tank (8), meet water storage tank (8) armored pump size height and be different under the situation of body portion (3), can turn nut (5) height of body portion (3) be transferred to the size that matches with water storage tank (8).

Can see among Fig. 3: the outer round recessed of duplex pad (7) links to each other with water storage tank (8) top circular hole (9), the pump housing (1) the body portion (3) of assembling nut (5) is passed in duplex pad hole, closely link to each other with top circular hole (9) by circle in the tapered cylindrical of epimere (6) the jam-packed duplex pad, the lower end is connected with inlet valve (10) and outlet valve (11), turn nut (5) compresses duplex pad (7) first line of a couplet and strengthens tightness and steadiness between tapered cylindrical (6) and top circular hole (9) again, and body portion (3) is fixed in the water storage tank.Thus, the utility model pump housing has the function of regulating pump housing body portion (3) size, has solved adjustable leakproof hand pump and can not generally be installed in the problem of using on the prior art water storage tank.

The utility model pump housing matches with the adjustable leakproof hand pump of existing patent technology, and very strong use value can be arranged, and will make substantial contribution to bearing the technological improvement of sprayer hand pump.

Claims

1, a kind of hand pump pump housing of improvement comprises: the pump housing (1), nut (5), duplex pad (7), the pump housing are divided into head (2) and body portion (3), it is characterized in that: one section of circle is provided with outside thread (4) under the head (2).

2, the hand pump pump housing of a kind of improvement according to claim 1 is characterized in that: there is an external diameter tapered cylindrical (6) bigger than body portion (3) hypomere the lower end of the epimere something or somebody to fall back on portion (2) of body portion (3).