JPH033912Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Field of Application> The present invention relates to the hearth structure of a smoke generating furnace used when raw wood, processed materials, etc. are treated with smoke hot gas.

<Prior Art> In a conventional smoke generating furnace, for example, appropriate fuel such as wood is deposited directly on the inner bottom of a closed body, a zigzag flow path is formed in the front of the body, and the zigzag flow is An outside air introduction passage was formed at the bottom of the passage, outside air was introduced from both passages, the fuel was ignited and smoke was generated within the body, and the smoke was sent to the next wood processing room. .

<Problems to be solved by the invention> In the conventional smoke generating furnace described above, when the amount of ash produced during the process of burning fuel in the body and generating smoke increases, the smoke generation becomes poor, and it is difficult to stabilize the smoke generation furnace. The problem was that it was not possible to send enough smoke to the wood processing equipment.

The present invention was developed in view of the above points, and its purpose is to make it possible to completely separate fuel and ash, to generate smoke in a stable state at all times, and to make it possible to dispose of ash easily. An object of the present invention is to provide a hearth structure for a smoke generating furnace that can be easily constructed.

<Means for Solving the Problems> The hearth structure of the smoke-producing furnace according to the present invention consists of swinging rolls that are placed parallel to each other at a predetermined interval in the lower part of the furnace, and between the swinging rolls. A hearth consisting of a plurality of closely spaced ash-removal rolls installed parallel to the oscillating rolls is provided.

<Operation> Fuel such as bark, chips, and sawdust is deposited on the rocking roll and ash removal roll that make up the hearth. Next, the accumulated fuel is ignited and air is blown from the blast pipe located below the hearth to burn the fuel and generate smoke within the furnace.

When the temperature inside the wood processing room, etc. does not reach the specified temperature, the amount of air blown from the blower pipe is increased, the temperature inside the furnace is raised, and this high temperature heat is supplied to the wood processing room, etc. to compensate. .

When removing ash from the fuel while smoke is being generated, the oscillating roll is rotated by a certain angle to the left or right to perform a oscillating motion, and the ash is dropped onto the ash removal roll. Drop the ash to the bottom of the furnace through the gap between adjacent ash removal rolls while rotating slowly.

<Example> An embodiment of the present invention will be described below with reference to the drawings.

1 is a furnace body, and 2 is a hopper formed on the side wall of the furnace body 1. The hopper 2 has an opening/closing member 2b that vertically opens and closes a communication port 2a formed in the side wall of the furnace body 1. Bark to this hopper 2,
Add fuel F for generating smoky gas such as chips and sawdust. Further, a water spray nozzle 3 for spraying water on the fuel F for generating fume gas is attached to the middle part of the side wall of the furnace body 1, and is used to lower the temperature inside the furnace. Furthermore, a chimney 4 with a damper 4a is formed in the upper part of the side wall of the furnace body 1. Furthermore, on the upper part of the side wall of the furnace body 1,
A duct 5 equipped with a damper 5a for controlling smoky gas is installed to supply smoky gas to an adjacent wood processing room (not shown) or the like.

6 is a hearth formed in the lower part of the furnace. This hearth 6 consists of swinging rolls 7 which are placed parallel to each other at predetermined intervals, and swinging rolls 7 which are spread between the swinging rolls 7 so as to be parallel to the swinging rolls 7 and with their axes located below. It is composed of a plurality of closely spaced ash removal rolls 7. In this example, the swinging roll 7 is
A case is shown in which three ash removal rolls 8 are provided between the books and the swinging rolls 7. The swinging roll 7 is manually or automatically moved to the left or right at a predetermined angle, for example, outside the furnace body 1.
Rotate it about 30 degrees to give it a rocking motion. On the other hand, uneven portions 8a are formed on the surface of the ash removal roll 8, and ash is removed from the gaps between adjacent ash removal rolls 8.

9 is the ash removing roll 8 along with the ash removing roll 8.
There are four heaters in total, one placed between each swinging roll 7. The heater 9 is made of, for example, a stainless steel tube with nichrome wire sealed inside.

Reference numeral 10 denotes a blower pipe provided below the hearth 6 and along the ash removal roll 8. Each of the blast pipes 10 emits air obliquely upward toward the hearth 6. In this example, a case where eight wires are provided is shown. Each blower pipe 10 is connected to a blower fan 12 provided outside the furnace body 1 via a tube 11 . Next, the operating state of the above embodiment will be explained. First, open the opening/closing member 2b of the hopper 2, and remove the bark, chips,
Swinging roll 7 of fuel F for generating smoky gas such as sawdust
The ash is deposited on the ash removal roll 8. Next, while the heater 9 is made to generate heat, the blower fan 12 is operated to blow air obliquely upward from the blower pipe 10 located below the hearth 6 to burn the fuel F and generate smoke in the furnace. The smoke generated in this furnace is sent to an adjacent wood processing room (not shown) or the like via a duct 5.

When the temperature inside the wood processing room, etc. does not reach a predetermined temperature, the amount of air blown from the blast pipe 10 is increased, the temperature inside the furnace is raised, and this high temperature heat is supplied to the wood processing room, etc. to correct.

If the temperature inside the wood processing room, etc. becomes higher than a predetermined temperature, it can be corrected by reducing the amount of air blown from the blower pipe 10. If you want to lower the temperature even more rapidly, use a smoky gas generator. Obtained by sprinkling fuel F with water.

Next, when it is desired to remove ash from the fuel F while smoke is being generated, the swinging roll 7 is manually or automatically rotated approximately 30 degrees to the left or right.
The ash in the fuel F oscillates, and as the ash removal rolls 8 rotate, the ash falls to the bottom of the furnace through the gaps between the ash removal rolls 8 that are close to each other.

<Effects of the invention> As can be seen from the above description, the present invention consists of rocking rolls that are installed parallel to each other at a predetermined interval in the lower part of the furnace; Since the hearth structure consists of multiple ash removal rolls installed in close proximity to each other, the fuel and ash are completely separated by the joint action of the oscillating motion of the oscillating rolls and the rotating motion of the adjacent ash removal rolls. As a result, desired smoke can always be generated in a stable state.

In addition, due to the mutual rotation of adjacent ash removal rolls, only fine ash particles fall to the bottom of the furnace from the small gap between them, and fuel such as bark, chips, and sawdust are blocked and accumulate at the bottom of the furnace. Ash disposal is extremely simple, as all you have to do is discharge the ash outside.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view showing an embodiment of the present invention;
FIG. 2 is a side view thereof, and FIG. 3 is a plan view of the ash removal roll. 6... Hearth, 7... Rocking roll, 8... Ash removal roll.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Oscillating rolls installed parallel to each other at predetermined intervals in the lower part of the furnace, and a plurality of oscillating rolls installed parallel to the oscillating rolls between the oscillating rolls. A hearth structure of a smoke generating furnace characterized by having a hearth consisting of a book and an ash removal roll in close proximity to each other. (2) The smoke according to claim 1 of the utility model registration, characterized in that the ash removal roll has an uneven portion on its surface, and the uneven portions of adjacent ash removal rolls are formed so as to mesh with each other. Hearth structure of a generator.