JPH0513949Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a dust prevention device for an engine in a harvester.

(b) Prior Art Conventionally, in a harvester, a threshing device is mounted on a machine stand, with a dust removal section at the front, an engine and an operating section are installed at the rear of the machine, a condenser is installed at the top of the engine, and the A filter box is installed on one side, a suction fan is installed on the other side, and the outer plate of the engine cover can be opened and closed.
There is already a device in which a dustproof device is installed on the outer surface of the outer panel, and a dust collection part is installed on the side of the dustproof device, and the suction force of a suction fan is used to draw in outside air, prevent dust, and then cool the condenser. Are known.

(c) Problems that the invention aims to solve In general, a harvester starts the engine and drives the threshing device to harvest grain culms that have been hung on rice racks to air dry, or grain culms that have been harvested and tied with a binder and released into the field. When threshing grain, the machine was driven one after another to a predetermined position, and the grain culm bundles were carried to the threshing device and fed to the threshing device, but the dust generated during this threshing process was discharged to the front and lower part of the machine. Because it is done,
When the wind direction is from front to back or in a dry field, the dust is blown back towards the engine and a large amount of dust and straw floats on the outside of the engine cover. Inhalation of waste materials such as straw waste may reduce the cooling effect of the engine, causing the engine to no longer perform at its specified capacity, or the straw waste accumulated in the engine compartment may be heated by the engine, causing a fire. In addition, if the threshing operation continues, straw waste etc. will accumulate in the dust control device, reducing the dust collection effect, but there is no appropriate means to remove this accumulated straw waste, and Since it is divided into upper and lower parts by a partition plate, there were problems such as making the removal work even more difficult.

(d) Means for solving the problem The present invention has a dust exhaust section mounted on the machine base as the front part, an engine and a driving section covered with an engine cover at the rear, and In a harvester that is provided with a condenser, a filter box on one side of the condenser, and a suction fan on the other side, a dust prevention device is provided inside the part of the engine cover that faces the filter box, and the dust prevention device has a suction fan on the other side. The cylinder is made to hang down below the filter box, and its outer wall is formed by the outer plate of the engine cover, and an opening that communicates with the filter box is provided inside the upper part of the intake cylinder, and an opening that communicates with the filter box is provided at the lower part of one side. An opening facing downward is provided in the room, and the other side of the suction cylinder is configured into a separation chamber and a waste receiving chamber, which are divided into upper and lower parts by a partition plate and communicated by a waste falling gap on the other side. The above-mentioned problem was solved by providing an opening extending between the separation chamber and the waste receiving chamber in the outer wall of the cylinder, and attaching an openable and closable lid to this opening.

(E) Operation The engine is operated to move the machine to the working position, and the grain culm is supplied to the driven threshing device for threshing. Once the grain culms near this position have been threshed, the grain culms are moved to the next work location and the same threshing is performed. During this threshing process, waste material is discharged towards the ground in front. On the other hand, the suction fan sucks the filter box through the condenser, so the air in the engine room is sucked in through the opening at the bottom of one side of the suction cylinder, and the straw and dust mixed in the sucked air rises. The separated debris enters the upper part of the separation chamber and is separated, and the separated debris falls into the debris receiving chamber from the debris fall gap and is deposited. When the threshing operation continues and debris accumulates in the separation chamber and the debris receiving chamber, when the lid is removed, the separating chamber and the debris receiving chamber above and below the partition plate are simultaneously opened, making it easy to scrape out the accumulated debris. I can do it.

Further, since the opening on one side of the intake cylinder sucks air from within the engine room, the straw dust accumulated in the engine room does not become too hot and can be prevented from igniting.

(F) Example An example of the present invention will be explained with reference to the drawings.
Reference numeral 1 denotes a threshing device mounted on a machine base 3 having a traveling device 2 with the dust evacuation section facing forward, an engine 4 mounted at the rear thereof, and a handle 5 and various operating levers 6 at the rear end. ...and a bag pedestal 7 are provided, and above the bag pedestal 7 the discharge port of the grain frying cylinder 8 faces.

Further, the engine 4 has a condenser 9 at the top, a filter box 11 having a secondary filter 10 is connected to the intake side thereof, and a suction fan 12 is attached to the exhaust side. A fuel filter 13 with a handle is attached to the lower side.

Engine cover 14 that constitutes the engine room
is composed of an outer plate 14a that can be opened and closed on its lateral outer side, and has a small window 15 for operating the handle in the part facing the fuel filter 13, and an exhaust port 16 in the part facing the suction fan 12.
However, since the exhaust port 16 is covered with a wire mesh 17, heated air discharged by the suction fan 12 and straw and dust particles smaller than the mesh pass through, but straw waste larger than the mesh is prevented from passing through. It is almost sealed.

A dustproof device 18 is provided on the inner surface of the engine cover 14 facing the secondary filter 10, and an intake pipe 19 of the dustproof device 18 is provided at the portion facing the secondary filter 10 and at the lower rear side. A separation chamber having openings 20 and 21, with a primary filter 22 made of a fine mesh stretched over the upper opening 20, and in front of the lower downward opening 21 divided into upper and lower parts by a partition plate 24. 23a and a waste receiving chamber 23 are provided, and a waste falling gap 25 is formed between the front edge of the partition plate 24 and the front wall, and the outer plate 14a is removably attached to the main body portion with screws 26. The outer plate 14a is provided with an opening in a portion extending between the separation chamber 23a and the waste receiving chamber 23, and this opening is closed and the inside can be seen through. The transparent lid 27 to be obtained has a lower end fitted into a holder 28 and an upper part removably screwed onto the outer plate 14a with a screw 29, and the separation chamber 23
a. You can see through the waste receiving chamber 23 and the primary filter 22 at the same time, and by removing the lid 27, you can remove clogging of the primary filter 22 and remove waste accumulated on the partition plate 24 and the bottom plate of the waste receiving chamber 23 with one touch. Can be removed. Note that 30 is an oil pan and 31 is an engine base.

In the above-mentioned device, when the engine 4 is started, the suction fan 12 rotates to intake air.

Then, air is sucked in from the window 15 and the frame 3 as shown by arrow a, enters through the opening 21 at the lower rear of the intake cylinder 19, rises, and enters the separation chamber 23a. A cyclone flow is generated by changing the direction in the horizontal direction, and the straw and other debris mixed in the cooling air fall into the debris receiving chamber 23 from the debris falling gap 25 as shown by arrow c, and the cooling air passes through the primary filter 22. The dust is removed by a secondary filter 10, passes through a condenser 9, and is discharged from a wire mesh 17 to the outside of the engine room.

During such engine cooling, the cooling air flows through the outer plate 14 provided on the lateral outer inner surface of the engine cover 14.
Since the intake cylinder 19 installed on the inner side of the engine room draws air from the rear of the engine room, it is extremely unlikely that straw, dust, etc. discharged to the front will be inhaled, and clean outside air can be inhaled to improve engine performance. It is possible to prevent the performance from deteriorating and to prevent straw waste accumulated in the engine room from being heated by the engine and igniting due to intake of air from the engine room.

(g) Effects of the invention The present invention has a dust exhaust section mounted on the machine base as the front part, an engine 4 covered with an engine cover 14 and a driving section at the rear thereof, and a condenser 9 mounted on the top of the engine 4. , a filter box 11 is provided on one side of the condenser 9, and a suction fan 12 is provided on the other side,
Filter box 1 of the engine cover 14
A dustproof device 18 is provided inside the part facing 1,
The intake cylinder 19 of the dust prevention device 18 is suspended below the filter box 11, and its outer wall is formed by the outer plate 14a of the engine cover 14, and the upper inside of the intake cylinder 19 communicates with the filter box 11. An opening 20 facing downward in the engine room is provided at the lower part of one side, and the other side of the intake cylinder 19 is provided with an opening 21 facing downward in the engine room.
A separation chamber 23a and a waste receiving chamber 23 are divided into upper and lower parts by a partition plate 24 and communicated on the other side by a waste falling gap 25. Since the opening above is provided and the lid 27 that can be opened and closed is attached to this opening, the waste is discharged to the front of the threshing device, and the dust is blown onto the ground and scattered, or is caused by wind from the front. Even if the outside air is blown back to the rear, clean air is drawn into the filter box 11 provided on one side of the condenser 9 within the engine cover 14 provided at the rear of the threshing device, and clean air is sucked in only from the lower part of the rear through the intake cylinder 19. At the same time, the air from the part corresponding to the engine 4 located below the condenser 9 and the filter box 11 can be sucked in, and clean outside air containing no straw or dust is sucked into the filter box 11. It is possible to prevent the performance of the engine and the performance of the engine from deteriorating, and to prevent straw waste from being heated by the engine and causing a fire.

Moreover, when the work continues and debris accumulates in the separation chamber 23a and the debris receiving chamber 23 of the dust prevention device 18, the lid 27
When opened, the outer sides of the separation chamber 23a and the debris receiving chamber 23 are simultaneously opened, and accumulated debris can be removed extremely easily and quickly without disassembling the engine cover 14.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
FIG. 1 is a side view of the harvester, FIG. 2 is an exploded perspective view of the main parts, FIG. 3 is a side view of the same, FIG. 4 is a longitudinal sectional rear view of the same, and FIG. 5 is a longitudinal sectional plan view. 10 is a secondary filter, 12 is a suction fan, 1
4 is an engine cover, 17 is a wire mesh, 18 is a dustproof device, 19 is an intake cylinder, 20 and 21 are openings, 22 is a primary filter, 23 is a waste receiving chamber, 23a is a separation chamber, and 24 is a partition plate.

Claims (1)

[Scope of utility model registration request] The dust exhaust part is mounted on the machine base as the front part, and the engine 4 covered with an engine cover 14 and the driving part are provided at the rear of the machine, and a condenser 9 is provided on the top of the engine 4, and a A filter box 11 is provided, and a suction fan 12 is provided on the other side.
In the harvester, a dustproof device 18 is provided inside a portion of the engine cover 14 facing the filter box 11, and the dustproof device 1
The intake cylinder 19 of No. 8 hangs below the filter box 11, and its outer wall is constituted by the outer plate 14a of the engine cover 14, and the upper inside of the intake cylinder 19 has an opening communicating with the filter box 11. 20, an opening 21 facing downward in the engine room is provided at the lower part of one side, and the other side of the intake pipe 19 is divided into upper and lower parts by a partition plate 24, and the other side is divided by a debris fall gap 25. It is configured with a separation chamber 23a and a waste receiving chamber 23 that communicate with each other,
A dustproof device for an engine in a harvester, characterized in that an opening extending between a separation chamber 23a and a waste receiving chamber 23 is provided in the outer wall of the intake cylinder 19, and a lid 27 that can be opened and closed is attached to this opening.