JPH0433970Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention is used in a portable power sprayer, a backpack power sprayer, etc., and determines whether or not a chemical solution is to be sprayed and the rotation of the drive means that can drive the power sprayer. The present invention relates to a control device for a power sprayer that can adjust the number of power sprayers.

[Conventional technology]

As shown in FIG. 5, a conventional control device of this type includes a frame a, a chemical liquid tank b, and a pressure feeding means c such as a pump capable of pumping the chemical liquid in the chemical liquid tank b.
In a power sprayer comprising: a driving means d such as an engine capable of driving the pressure feeding means c; and a dispersing means e such as a nozzle capable of spraying the pressure-fed chemical solution, the pressure feeding means c and the dispersing means e are communicated. An opening/closing means g, such as a cock, which can be opened and closed by a lever f is interposed in the conduit, and a throttle, which is connected to the frame a, to an adjusting means h, such as a carburetor, which can adjust the rotational speed of the driving means d. Lever i is installed. In addition, j is the spark plug of the driving means d, k is the recoil starter of the driving means d, l is the stop button of the driving means d, m
is the fuel tank of the driving means d.

[The problem that the idea attempts to solve]

However, in the conventional device, the opening/closing means g is opened/closed while holding the dispersing means e such as a nozzle and the part n where the opening/closing means such as a kettle are arranged with the right hand, and at the same time, the driving means d is operated with the left hand. The throttle lever i must be operated, which is very troublesome, and at the same time, when the opening/closing means g is closed to stop chemical spraying, the user forgets to operate the throttle lever i. However, the rotational speed of the drive means d may still be high, resulting in waste of fuel, etc.

[Means to solve the problem]

This invention was made in view of the above-mentioned circumstances, and includes a chemical tank, a pressure feeding means capable of pumping the chemical liquid in the chemical liquid tank, a driving means capable of driving the pressure feeding means, and a device capable of dispersing the pressure-fed chemical liquid. In a power sprayer equipped with a dispersing means, an opening/closing means that can be opened and closed by a lever is interposed in a pipe line that communicates the pressure feeding means and the dispersing means, and the lever is used to adjust the rotation speed of the driving means. The present invention proposes a control device for a power sprayer, which is connected to an adjusting means and enables opening/closing operations of the opening/closing means and rotation adjustment operations of the adjusting means by operating the lever.

[Effect]

In the device configured as described above, by operating the lever in one motion, the opening/closing operation of the opening/closing means and the rotation adjustment operation of the adjusting means can be performed more easily with one hand, thereby saving labor and energy. It is something that can be effective.

〔Example〕

An embodiment of the power sprayer control device of this invention will be described below with reference to the accompanying drawings.

Fig. 1 is a rear view showing a backpack-powered sprayer equipped with the control device of this invention. A pressure-feeding means 3 such as a pump capable of force-feeding a chemical solution, a driving means 4 such as an engine capable of driving the pressure-feeding means 3, and a flexible conduit 5 communicating with the pressure-feeding means 3, and a handle at the base. 6, and a dispersion means 7 such as a nozzle that can be held by hand and spray the pumped chemical solution.

In the above-mentioned backpack power spreader, the control device according to this invention has an enlarged view of section A shown in FIG. 1 in FIG. 2, and an enlarged side sectional view and enlarged front view of section B shown in FIG. 2 in FIGS. As shown in each case, the handle portion 6 has a through hole whose base portion communicates with the pumping means 3 via the flexible conduit 5 and whose distal end communicates with the dispersing means 7 via the extension conduit 8. A hole 9 is formed in the longitudinal direction, and a valve seat 10 forming a part of the opening/closing means 9' is formed in the through hole 9. A valve body 11 can be seated on the valve seat 10 while being pressed in the direction of the valve seat 10 by a compression coil spring 12 serving as a pressing means, and a valve stem 13 is integrally formed on the valve body 11.
An end portion of the valve stem 13 is slidably protruded outside the handle portion 6 via a valve stem guide 14 in a watertight manner. Note that 15 is an O-ring. An operating lever 16 is swingably supported on the handle portion 6 by a support shaft 17, and a protruding portion 18 is formed at the tip end of the operating lever 16 toward the longitudinal direction. An outwardly projecting end of the valve stem 13 is locked by an E-ring 19. Further, another protrusion 20 is formed on the operating lever 16 in a direction perpendicular to the protrusion 18 with the support shaft 17 as a boundary.
As shown in FIGS. 3 and 4, the tip of the wire inner 22, which is passed through the through hole 21 formed in the longitudinal direction of the handle 6, is attached to the tip of the fastener 2, as shown in FIGS.
It is locked by 3. The proximal end of the wire inner 22 is connected to a flexible pipe-shaped wire outer 24.
Along the inside, the drive means 4 is connected to a regulating means 25 such as a carburetor.

In FIG. 1, 26 is a spark plug of the drive means 4, 27 is a recoil starter of the drive means 4, and 28 is a spark plug of the drive means 4.
29 represents a pressure regulating valve handle of the pressure feeding means 3, and 30 represents a fuel tank of the driving means 4, respectively.

For the control device configured as above,
By squeezing the operating lever 16, the valve element 11 of the opening/closing means 9' is moved away from the valve seat 10 by the protrusion 18 against the spring 12, the opening/closing means 9' is opened, and the pressure is fed from the pressure feeding means 3. The incoming chemical liquid is sprayed by the spraying means 7 such as a nozzle, and at the same time the wire inner 22 is pulled by another protrusion 20, and the control valve of the control means 25 such as a vaporizer increases its opening and is driven. The rotational speed of the means 4 increases. When the operating lever 16 is gripped, the valve body 11 is seated on the valve seat 10 by the pressing force of the spring 12, etc., the opening/closing means 9' is closed, and at the same time, the tensioned state of the wire inner 22 is released. , the adjusting means 25 returns to its original state and the driving means 4 returns to its idling state, so that fuel is not wasted.

[Effect of idea]

According to the control device of this invention having the above-described structure, by one operation of the operating lever 16, it is possible to simultaneously control whether or not to spray from the spraying means 7 and to control the adjustment of the rotation speed of the drive means 4. This has the effect of making the operation easier, saving labor, automating the operation, and saving energy.

[Brief explanation of drawings]

Fig. 1 is a rear view showing a backpack power spreader using the control device of this invention, Fig. 2 is an enlarged sectional view of part A shown in Fig. 1, and Figs. 3 and 4 are the parts shown in Fig. 2. Enlarged sectional view of part B, Figures 3 and 4, Figure 2
In the enlarged side sectional view and enlarged front view of the illustrated part B,
FIG. 5 is a rear view of a power sprayer using a conventional device. In the figure, 1...frame, 2...chemical tank, 3...pressure feeding means, 4...driving means, 6...
...Handle portion, 7...Spraying means, 9...Through hole, 9'
...Opening/closing means, 10... Valve seat, 11... Valve body, 1
2... Compression coil spring, 13... Valve stem, 16...
Operating lever, 18, 20...protrusion, 21...through hole, 22...wire inner, 24...wire outer, 25...adjustment means.

Claims (1)

[Scope of utility model registration request] A power sprayer comprising a chemical solution tank, a pressure-feeding means capable of force-feeding the chemical solution in the drug-solution tank, a driving means capable of driving the pressure-feeding means, and a dispersing means capable of spraying the force-fed chemical solution, wherein the force-feeding means and the spraying means An opening/closing means that can be opened and closed by a lever is interposed in the conduit communicating with the driving means, and this lever is connected to an adjusting means for adjusting the rotation speed of the driving means, and the opening/closing means is connected to the adjusting means for adjusting the rotation speed of the driving means. A control device for a power sprayer that enables opening/closing operations of the means and rotation adjustment operations of the adjusting means.