JPS61275599A - Composite blower - Google Patents

Abstract

PURPOSE:To perform conveyance of a solid and effect blast, by a method where in jet is injected through plural jet nozzles, annularly arranged, with the aid of compressed air. CONSTITUTION:An air introducing chamber 3, having an air introduction passage 2, is formed along the peripheral direction of a discharge pipe 1, and plural jet nozzles 4 are situated to its inner peripheral wall. Air from a compressor 5 is introduced through an introduction hole 6, and air from a blower 17 is introduced to an intake port 11 to take it in an air guide passage 8. This, if a blower is driven with the aid of a compressor, enables powerful conveyance of fluid to be driven through supply of an airflow during conveyance.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention is applicable to conveying bulk solid matter, oil, dust, etc.
This invention relates to a composite blower used for blowing air.

(Prior Art) Conventionally, when transporting solid materials, etc. using a compressor, compressed air sent from the compressor is sent from a jet nozzle 4' provided on the inner circumferential wall of a discharge pipe 1', as shown in Fig. 3. It was designed to be sprayed to suck up and transport solid objects. However, if you try to use this as a blower, there is a problem that the air volume is insufficient and it cannot function satisfactorily. Therefore, a blower must be prepared to blow air, but the blower does not have enough pressure to transport the items.

(Problems to be Solved by the Invention) The present invention has been made in view of the above points, and its purpose is to convey not only lumpy solids, oil, dust, etc. It is an object of the present invention to provide a composite blower that can effectively increase the pressure and increase the volume.

(Means for Solving the Problems) The present invention provides an air introduction chamber 3 having an annular air introduction path 2 along the circumferential direction of the discharge pipe 1 at the proximal end of the discharge pipe 1. A plurality of jet nozzles 4 are provided at appropriate intervals on the inner circumferential wall of the introduction chamber 3, and an introduction hole 6 for introducing air sent from the compressor 5 into the air introduction chamber 3 is opened in the air introduction path 2. Among the discharge pipes 1, the discharge pipe 1 is lower than the air introduction chamber 3.
An air guide tube 7 is disposed coaxially with the discharge tube 1 near the base end of the air guide tube 7 to form an air guide path 8 between the discharge tube 1 and the air guide tube 7. is connected to the inner peripheral wall of the discharge pipe 1, and a slit-shaped air injection hole 9 is formed between the tip of the air guide cylinder 7 and the inner peripheral wall of the discharge pipe 1, and air is sent from the blower 10 to the air guide path 8. The present invention relates to a composite blower characterized in that an intake hole 11 for taking in incoming air is opened in an air guide path 8.

(Example) Hereinafter, the present invention will be explained in detail based on illustrated embodiments.

FIG. 1 shows a first embodiment of the present invention, the main purpose of which is a conveying function. The discharge pipe 1 and the suction pipe 12 are coaxially connected, and the base of the discharge pipe 1 widens toward the suction pipe 12 in a trumpet shape. At the base end of this trumpet-shaped portion 13,
An air introduction chamber 3 having an annular air introduction path 2 is provided along the circumferential direction of the discharge pipe 1. A plurality of jet nozzles 4 are provided on the inner peripheral wall of the air introduction chamber 3 at appropriate intervals, and an introduction hole 6 for introducing air sent from the compressor 5 into the -0 air introduction chamber 3.
is opened into the air introduction path 2.

In addition, an air guide tube 7 is disposed coaxially with the discharge tube 1 closer to the proximal end of the trumpet-shaped part 13 than the air introduction chamber 3 in the discharge tube l, so that air can be aired between the discharge tube 1 and the air guide tube 7. A guide path 8 is formed.

The base end of the air guide cylinder 7 is connected to the inner peripheral wall of the discharge pipe 1, and a slit-shaped annular air injection hole 9 is formed between the tip of the air guide cylinder 7 and the inner peripheral wall of the discharge pipe 1. However, an intake hole 11 is opened in the air guide path 8 to take in air sent from the blower 1O to the air guide path 8.

Next, the operation of the composite blower configured as above will be explained.

First, the compressed air from the compressor 5 causes a plurality of jet nozzles 4 arranged in an annular shape to form a jet J.
When injected, a negative pressure is created in the center, and the driven fluid is sucked and conveyed from the suction pipe 12.

At the same time, the blower 10 blows air from the air injection hole 9 in a ring shape concentric with the ring shape J,
This supplements the air volume and powerfully conveys the driven fluid.

FIG. 2 shows a second embodiment of the present invention, which is intended for the purpose of blowing air, and the base end of the discharge pipe 1 is closed with a closing plate 14. This allows the jet J to compensate for the lack of pressure in the blower 10.

(Effects) As described above, the present invention provides an air introduction chamber having an annular air introduction path along the circumferential direction of the discharge pipe at the proximal end of the discharge pipe, and appropriately attaches the air introduction chamber to the inner circumferential wall of the air introduction chamber. In addition to providing a plurality of jet nozzles at intervals, an introduction hole for introducing air sent from the compressor into the air introduction chamber is opened in the air introduction passage, and a part of the discharge pipe at the base of the discharge pipe is placed closer to the air introduction chamber than the air introduction chamber. An air guide tube is arranged coaxially with the discharge tube near the end to form an air guide path between the discharge tube and the air guide tube, and the base end of this air guide tube is connected to the inner circumferential wall of the discharge tube. At the same time, a slit-shaped air injection hole is formed between the tip of the air guide cylinder and the inner peripheral wall of the discharge pipe, and an intake hole is formed in the air guide path to take in the air sent from the blower. Since the opening is now open, if the purpose is to convey the fluid, the compressed air from the compressor can be used to inject jets in an annular manner from multiple jet nozzles arranged in an annular manner, creating a negative pressure in the center and discharging the driven fluid from the suction pipe. At the same time, the blower blows air from the air injection hole in an annular shape concentric with the annular jet, thereby supplementing the air volume and powerfully conveying the driven fluid. On the other hand, when the purpose is to blow air, the jet can compensate for the lack of pressure in the blower. As a result, the drawbacks of a blower, which has air volume but no pressure, and a compressor, which has pressure but no air volume, can be compensated for, and it goes without saying that it can powerfully convey lumps of solid matter, oil, dust, etc. In addition, it can also blow air effectively.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a first embodiment of the invention, FIG. 2 is a sectional view of a second embodiment of the invention, and FIG. 3 is a sectional view of a conventional bowl. 1--Discharge pipe, 2--Air introduction hole, 3--Air introduction chamber, 4--Jet nozzle, 5--Compressor, 6--Introduction hole, 7--Air guide tube, 8-- Air guide path, 9-...Air injection hole, IO-・Prower-1
11.--Intake hole

Claims (1)

[Claims] (1) An air introduction chamber having an annular air introduction path along the circumferential direction of the discharge pipe is provided at the proximal end of the discharge pipe, and a plurality of jet nozzles are installed at appropriate intervals on the inner peripheral wall of this air introduction chamber. At the same time, an introduction hole for introducing air sent from the compressor into the air introduction chamber is opened in the air introduction passage, and an introduction hole is provided coaxially with the discharge pipe within the discharge pipe closer to the proximal end of the discharge pipe than the air introduction chamber. An air guide tube is arranged to form an air guide path between the discharge tube and the air guide tube, and the base end of the air guide tube is connected to the inner circumferential wall of the discharge tube, and the tip of the air guide tube and A slit-shaped air injection hole is formed between the inner peripheral wall of the discharge pipe and an intake hole is opened in the air guide path to take in air sent from the blower to the air guide path. Combined blower.