JPH0454837Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an airtight structure for a chemical tank of a power sprayer, in which the lower part of a tank unit detachably connected above a blower unit is airtight.

[Conventional technology]

Conventionally, in a power spreader, a tank unit, which has a supply port at the top and a bottom member that can be opened and closed inward at the bottom, is removably connected above a blower unit containing a fan. As seen in Publication No. 166855-1985,
The structure was such that the lower part of the tank unit was connected to the upper part of the blower unit via a holding fitting.

[Problem that the invention attempts to solve]

In such a structure, if the mist specification is used,
The airtightness is incomplete and liquid tends to leak outward from the bottom of the tank unit.Also, when changing from a mist specification to a dust specification, when removing the chemical solution in the tank, the blower is likely to leak. This also has the troublesome inconvenience of not being able to remove the tank unit from the unit, carrying only the tank unit and laying it down while transferring it to another container, and having to carry the entire sprayer and laying it down.

[Means for solving problems]

The present invention solves such problems by making the lower part of the tank unit highly airtight and making it possible to carry the tank unit alone without leaking. A packing material is interposed between the upper and lower sides of the flange formed on the lower outer periphery of the tank body of the unit and the flange formed on the outer periphery of the bottom member, and a packing material is interposed between the upper and lower parts of at least two holding members circumscribing them. The holding member has a pressing surface that can be joined to the upper surface of the tank flange, and a clamping plate that can be joined to the lower surface of the flange of the bottom member at the lower part of the holding member.

[Effect]

Therefore, when the upper pressing surface of the holding member is joined to the upper surface of the tank flange, and the clamping plate that is joined to the flange of the bottom member is tightened to the lower part of the holding member, the tightening causes the gap between the two flange parts to Packing material can be compressed to create a structure with good airtightness.

〔Example〕

Next, the embodiment shown in the drawings will be described.

FIG. 2 shows a side view of the backpack-type power spreader, in which a blower unit B containing an engine unit E and a fan 1 is mounted on the backpack frame 7, and a discharge pipe 8 extending from the top of the blower unit B. An elbow 9 that communicates with the jet pipe is connected to the tip side of the blower unit B, and an air intake port 11 can be seen at one end side of the metering chamber 10 provided on one side of the upper part of the blower unit B. A medicine supply pipe 12 extending from the other end is connected to the discharge pipe 8, and connecting parts 14 are provided below the left and right parts of the mounting seat 13 formed on the upper outer periphery of the metering chamber 10. 14, respectively, and U-shaped bolts 17 having nuts 15, 15 at both ends and provided with toggle handles 16 are pivoted to both connecting portions 14, respectively.

The tank unit A, which is removably connected above the blower unit B, is constructed by attaching a bottom member C to the inside of the lower part of a tank body a, which has a supply port 2 on the top to which a cap 2a is attached. A flange portion 3 is integrally formed on the lower outer periphery of the tank body a, and a flange portion 4 having a concave surface 4a on the upper surface is integrally formed on the lower outer periphery of the cylindrical portion 18 provided on the outer periphery of the bottom member C. The annular packing material 5 interposed between the flanges 3 and 4 has two protrusions 5a on the top and bottom surfaces, respectively.
5b, and one protrusion 5c is formed protruding from the outer circumferential side.

In addition, on the upper inner surfaces of the two holding members 6, 6 that are joined to the outer peripheries thereof, a pressing surface 6a that can be joined to the upper surface of the tank collar 3 is formed, and on both ends of both holding members 6, 6. The connecting surfaces 6c that can be joined to each other are respectively provided upright, and screws 19 are installed in the connecting surfaces 6c, 6c to be joined so that screws 19 can be respectively inserted thereinto, and concave surfaces formed on the lower surfaces of both holding members 6, 6 are provided. An annular clamping plate 6b that can be joined to the lower surface of the flange 4 is fitted into the hole 20 of the clamping plate 6b.
A screw 22 is installed in the screw hole 21 of the holding members 6, 6 so that it can be tightened. Each of the grooves 23 is formed in such a way that the grooves 23 can be fitted thereinto.

The bottom member C has a support member 25 installed above an opening 24 formed inside the cylindrical portion 18,
A cylindrical spacer 27 and a cap 28 are fitted into a support rod 26 erected above the center of the support member 25, and a nut body 29 is installed at the upper end so as to be screwable. A support shaft 31 that operates the metering valve 30 from the outside, which can be fitted from the outside.
The metering valve 30 is installed at the base of the metering valve 30 so that it can be rotated downward from the center, and when the metering valve 30 is lowered, the air from the air intake port 11 is directed to the upper side of the metering valve 30. A ventilation port 32 is formed so that the air flows through the tank body a, and the tip of the air guide port 33 above the support shaft 31 is fixed to the cap 2a, and a pipe 34 opened into the tank body a is connected to the cap 2a in the vicinity of this locking portion. Set and configure.

In addition, in the figure, 35 is a packing material, and 36 is a liquid feeding pipe.

Therefore, the packing material 5 is fitted onto the upper surface of the flange portion 4 of the bottom member C in such a manner that the lower protrusion 5b of the packing material 5 fits into the concave surface 4a, and
The flange 3 of the tank body a is fitted into the cylindrical part 18 so that the lower surface is joined to the upper protrusion 5a of the packing material 5, and the upper pressing surface 6a is joined to the upper surface of the flange 3. At the same time, both the holding members 6, 6 are circumscribed, and the screws 19 are inserted and fixed into the connecting surfaces 6c, 6c to be joined, respectively, and the inner circumferential side is joined to the lower surface of the flange 4 of the bottom member C, and the holding members 6, 6 are clamped. Board 6
b is fitted into the lower concave surfaces 6d of both holding members 6, 6, and each screw 22 is inserted through the holding member 6b and screwed into the holding member 6, so that the holding plate 6b can be tightened. By tightening it,
While the upper and lower flanges 3 and 4 compress the packing material 5 between them, an airtight structure can be created to prevent liquid leakage from between the tank body a and the bottom member C.

When connecting the tank unit A assembled in this way above the blower unit B, attach it to the mounting seat 13.
A packing material 35 is interposed above to join the lower part of the tank unit A, and both toggle handles 16, 1 are connected.
If the nuts 15, 15 are engaged with the holding members 6, 6 while rotating the toggle handles 16, 6, the connection can be made in an airtight state as shown in FIGS. When the tank unit A is moved to release the lock, the airtight tank unit A can be removed. Further, the nuts 15, 15 are used for fine adjustment of the tightening force.

In addition, when using the mist specification, as shown in Figs. 1, 3, and 5, if the cap 28 is lowered so as to close the opening 24, it becomes a mist machine and the tank body a When removing the chemical solution remaining inside, tank unit A can be removed and carried as described above, and
When using the duster specification, as shown in Fig. 7, the cap 28 should be raised so that the upper part of the opening 24 becomes a stirring chamber, and the dusting operation can be performed while rotating the metering valve 30. become.

[Effect of idea]

In this way, the present invention allows the clamping plate 6b to be connected to the holding member 6.
By tightening it to the lower part of the tank unit A, it is possible to create an airtight structure while compressing the packing material 5 between the flange 3 of the tank body a and the flange 4 of the bottom member C. The lower part can be made into a good airtight structure that will not leak.
In the case of the mist specification, when removing the chemical solution remaining in the tank body A, it is possible to remove the tank unit A, carry it around and lay it down without leaking, and it can be conveniently carried out with a simple structure. It has the features of being able to

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the main parts of an embodiment of the present invention.
Fig. 2 is a side view of the power spreader, Fig. 3 is a sectional view taken along the - line in Fig. 2, Fig. 4 is a sectional view taken along the - line in Fig. 1, and Fig. 5 is a sectional view taken along the - line in Fig. 4. 6 is an exploded view of FIG. 5, and FIG. 7 is a sectional view of the duster specification. 1...Fan, B...Blower unit, 2...
Supply port, C... bottom member, A... tank unit, a... tank body, 3, 4... flange, 5...
Packing material, 6... Holding member, 6a... Pressing surface, 6b... Holding plate.

Claims (1)

[Scope of utility model registration request] Above the blower unit B containing the fan 1, there is a tank unit A which has a supply port 2 at the top and a bottom member C which can be opened and closed inward at the bottom.
In the power spreader configured by detachably connecting the tank body a in the tank unit A,
The flange portion 3 formed on the lower outer periphery of the bottom member C
A packing material 5 is interposed between the upper and lower sides of the tank flange 4 formed on the outer periphery of the tank flange 4, and a presser surface that can be joined to the upper surface of the tank flange 3 is provided on the upper part of at least two holding members 6 that circumscribe them. While forming 6a,
The drug tank airtight structure is characterized in that a clamping plate 6b which can be joined to the lower surface of the flange part 4 of the bottom member C is attached to the lower part of the holding member 6 and can be freely tightened.