JPS6013849Y2 - Collection device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a novel collection device, which is particularly suitable for various purposes such as collection and dispersion by utilizing jet flow.

For example, in the household, collecting fallen leaves and large garbage, etc., in agriculture and gardening, collecting fruits, spreading seeds and fertilizers, and in light civil engineering, spreading gravel, soil hardening agents, etc. Its application range is wide.

It can also be used as a wind sweeper by switching the valve, and can be used to blow away and disperse garbage and snow, but it can also be used for cleaning large sports fields, baseball fields, etc., removing snow, or blowing away standing water. Suitable.

Furthermore, it can be used first as a wind sweeper to collect large dust particles for powerful cleaning, and then as a vacuum cleaner to clean corners and other places where wind sweeping is inappropriate.

The present invention provides such a collection device by increasing the volume of the negative pressure cylinder chamber that generates suction force, and has a large collection capacity suitable for collecting large solid objects. The object of the present invention is to provide a collection device that is equipped with a flow direction change valve and has both wind sweeping and dust collection functions.

The configuration of the present invention will be explained below based on a hand-held collection device and a backpack-type collection device as embodiments shown in the drawings.

Both of these devices constitute a blower by directly connecting a centrifugal blower fan to the rotating shaft of the engine, and the rotating shaft of the fan generates pressurized air to form a jet stream from the nozzle 1.

The two devices are distinguished depending on whether the blower is hand-held or backpack-type.

In the collection device, one end of a negative pressure cylinder 2 is attached to a blower nozzle 1, and a constriction part 3 is formed at the other end of the negative pressure cylinder 2.

This constriction portion effectively creates a negative pressure inside the negative pressure cylinder.

The negative pressure cylinder 2 has a cylindrical protrusion 5 on one side between the nozzle 1 and the constriction part 3, into which a collection pipe 4 is attached.

Further, a collection bag 7 is attached to the discharge port 6 of the constriction section.

Although this state can be understood from FIG. 1, FIG. 3 shows a diagram for explaining the function of the negative pressure cylinder 2.

If the distances from the center axis of the collection tube 4 to the nozzle 1 and the constriction section 3 are 11,1□, then the negative pressure pin in the cylindrical protrusion 5 to which the collection tube 4 is attached is 11,1□. 4th due to change
It changes as shown in Fig. 5.

Judging from these graphs, 1°/11 is 1.5~2. @
seems to be valid.

The blower used in this example has an air volume of 6.16 d/min.
The nozzle diameter is 40 mm, the aperture diameter is 80 mm, and the negative pressure cylinder diameter is 96 W! It is.

As can be seen from FIG. 4, the distance 11 of the collecting pipe 4 from the nozzle has a great influence on the internal pressure of the collecting pipe.

Namely 1. A large negative pressure exists when is in the range 30 m to 7-.

In this way, the negative pressure inside the collection tube changes depending on the location where the collection tube 4 is installed and the throttle position, but what requires special attention in this case is that since there are no obstacles inside the negative pressure cylinder 2, the internal volume of the cylinder The diameter of the collection tube can be increased, and relatively large solids can be collected.

The dotted line graphs in Figures 4 and 5 are obtained by reducing the airflow rate of the blower to 5.94771' per minute, and are intended to show that substantially the same graphs can be obtained even if the airflow rate changes. It is.

FIGS. 6 and 7 show another embodiment of the collection device, which is characterized in that a jet flow direction changing valve 30 is provided inside the negative pressure cylinder.

That is, as can be seen in FIG. 6, the negative pressure cylinder 12 has the nozzle 11 integrally formed at its right end.

The opening diameter gradually decreases toward the right, forming a cylindrical portion with the same diameter at the smallest diameter portion.

Further, this negative pressure cylinder has a diaphragm member 13 detachably attached to its left end.

The aperture member 13 is fixed by a protrusion 31 formed on the upper outer circumferential wall of the right end opening and a stop member 32 provided at the left end of the negative pressure cylinder 13, as shown in FIG.

This stopper member 32 is attached to the negative pressure cylinder with a screw by a presser member 33.

Further, the right holding member 34 pivotally supports the valve 30 and is rotated by a handle 35.

This rotation of the handle 35 causes the valve 30 to rotate integrally, thereby closing the opening of the throttle member 13.

As can be seen from FIGS. 6 and 7, the shape of the valve 30 has a spherical portion 36 in the direction of the nozzle, and a negative pressure cylinder 1 in the direction of the throttle member.
A cylindrical portion 37 is formed having an outer diameter that is approximately the same as the inner diameter of No. 2.

Therefore, the spherical portion 36 has a notch 3 for escape from the nozzle.
8, and the cylindrical portion is cut at an angle of approximately 45° so as not to obstruct the flow of jet air from the nozzle to the throttle member when the valve is used.

Note that the handle 35 has a convex portion (not shown) pressed by an elastic member so as to hold the valve in the open/close position, and is engaged with a concave portion 40 at both ends of the guide member 39 of the negative pressure cylinder 12. Ru.

Next, the operation of the collection device shown in Figs. 1 and 2 will be explained.
When the engine starts, pressurized air is generated in the blower.

This pressurized air is ejected from the nozzle 1 into the negative pressure cylinder 2 as a jet stream, and blows through the constriction part 3.

At this time, the air in the negative pressure cylinder 2 is attracted and reaches the discharge port 6 through the constriction part 3.

As a result, the pressure inside the negative pressure cylinder 2 drops significantly, and the pressure inside the collection tube 4 also drops.

This collection pipe 4 sucks atmospheric air from the outside, so the negative pressure cylinder 2
The collection force of the collection tube 4 is maintained while keeping the negative pressure inside constant.

The type of suction and collection material can also be selected by the shape of the inlet 8 provided at the air suction port of the collection tube 4.

The solids sucked in from the intake port 8 are guided into the negative pressure cylinder 2 through the collection pipe 4.

Since there is nothing inside the negative pressure cylinder 2 that would obstruct the flow of the solids, the solids are smoothly sent to the constriction section 3 and reach the collection bag 7.

Since this collection bag 7 is breathable, only the solid matter remains inside the collection bag and the air flow is diffused and released into the atmosphere.

Furthermore, without using the collection bag 7, the collected material can be scattered or accumulated by ejecting it together with the exhaust gas.

Furthermore, instead of the collection bag 7, it may be connected to a transfer pipe 9 or the like to transport and accumulate collected materials at a remote location.

The collection device shown in FIGS. 6 and 7 is a jet flow direction changing valve 30.
By switching this valve, the collection tube 14 can reverse the flow of air flowing therethrough.

That is, in the valve position shown in FIG. 6, the jet stream from the nozzle 11 functions in the same way as the collection device shown in FIGS. 1 and 2.

Rotate the handle counterclockwise as shown in Figure 6 to close the valve 30.
When the opening of the throttle member 13 is closed, the jet stream from the nozzle 11 is guided toward the collection pipe 14, giving the collection pipe the same function as an air volume pipe.

Therefore, by switching the valve 30, both the air volume and dust suction functions can be provided.

In practical terms, for example, when efficiently collecting scattered fruit mixed with garbage and fallen leaves, the direction conversion valve can be switched to convert the collection pipe into an airflow pipe during work to blow away the garbage and fallen leaves. Because you can expose heavy fruits on the spot,
By switching the valve again, the collection pipe is returned to the collection pipe, and the collection operation can be immediately continued.

As described above, according to the configuration of the present invention, a large negative pressure space is formed between the nozzle and the constriction part, and a collection pipe is provided between this space, so that large suction and collection materials can be smoothly transferred to collection bags or collection locations. In addition to effectively collecting, dispersing, collecting, and transporting work, the structure of the negative pressure cylinder is simple, compact, lightweight, and economical for mass production, and has good work efficiency, and the direction of the jet flow can be changed. The flow of air in the collection pipe can be selected by simply switching the valve, and it can have both functions of air discharge and suction, making it possible to provide a collection device suitable for a variety of uses even during work.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a plan view showing the hand-held collection device in use, FIG. 2 is a side view showing the backpack-type collection device in use, and FIG. 3 is an explanatory diagram of the negative pressure cylinder, FIG. 4 is a graph showing the change in the pressure inside the pipe depending on the mounting position of the collecting pipe, FIG. 5 is a graph showing the change in the pressure inside the pipe depending on the position of the constriction part, and FIG. 6 is another example. FIG. 7 is a plan view of the essential parts of the collection device, and FIG. 7 is a sectional view taken along the line -■ in FIG. 1.11... Nozzle, 2, 12... Negative pressure cylinder, 3... Throttle part, 4... Collection pipe, 1
3... Throttle member, 30... Direction change valve.

Claims (3)

[Scope of utility model registration request] (1) A nozzle that receives pressurized air to form a jet stream, a constriction part that is away from the nozzle in the flow direction of the jet flow and does not pass through the jet stream, and a constriction part that is located between the nozzle and the constriction part on one side. What is claimed is: 1. A collection device comprising: a negative pressure cylinder provided with a collection pipe; and a jet flow direction changing valve provided inside the negative pressure cylinder to guide the jet flow to the collection pipe. (2) The collection device according to claim 1, which is a registered utility model, characterized in that a collection bag is provided at the discharge port of the throttle section. (3) A utility model registration claim 1, characterized in that an auxiliary tool for collecting, dispersing, transporting, etc., fixed objects is detachably provided on the discharge port of the constriction part or the collection pipe. Collection device.