Pellet transport mechanism with fire shutter

Abstract

To provide a fire shutter mechanism which is for preventing backflow of combustion.SOLUTION: A fire shutter has an openable / closable shutter mechanism in a granular material providing device and a driving control mechanism for driving and controlling the shutter mechanism, which is characterized in that it is constituted to surely guide a shutter to a closing direction during power failure by providing the shutter mechanism using an air cylinder for selecting passage or non-passage of the granular material, and a tension coil spring for energizing the shutter mechanism always in the closing direction at a proper place of a granular material passage in the granular material providing device, and the driving control mechanism including a solenoid valve and a conduit is provided for driving and controlling the air cylinder.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] This invention is Pellet transport mechanism with fire shutter Regarding. [Background technology]

[0002] Traditionally, various Pellet Transfer Mechanism However, as shown in this invention, a fire shutter mechanism that combines an air cylinder and a tension coil spring is used. There is no pellet transfer mechanism equipped with this. Summary of the Invention [Problem to be solved by the invention]

[0003] Generally, when transferring materials to be burned, backflow of combustion can occur, and an effective and simple mechanism to prevent this is desired. In view of the above, the present invention was invented with the aim of providing a new and effective means to solve the above problems by combining an air cylinder and a tension coil spring. [Means for solving the problem]

[0004] As a means for solving the problems, the present invention has the following configuration. That is, the present invention provides: A hopper is provided for temporary storage of pellets, and a screw conveyor is provided within the hopper for downward transport of pellets. An input chute is provided connected to the bottom end of the hopper. An air blow pipe is provided obliquely downward on the side wall of the hopper to prevent pellets from getting caught in the gap between the input chute and an openable shutter (described later) and causing incomplete closure. An openable shutter mechanism using an air cylinder is provided in an appropriate position within the input chute located below the air blow pipe to allow or prevent the pellets from passing through. A tension coil spring is provided to constantly urge the openable shutter mechanism in the closing direction, so that the shutter is reliably guided in the closing direction even in the event of a power outage. The air cylinder a drive control mechanism including a solenoid valve and a pipe line for driving and controlling the air blow pipe and for injecting air from the air blow pipe, and this drive control mechanism has a first solenoid valve for controlling the inflow of air from the air compressor, an air tank for storing the air that has passed through the first solenoid valve at a predetermined pressure, a cylinder pipe line connected to the air tank for ventilation, a second solenoid valve connected to the cylinder pipe line, an air cylinder connected to the second solenoid valve, an air blow pipe line branching off from the cylinder pipe line, a third solenoid valve connected to the air blow pipe line, and a fourth solenoid valve connected to the air blow pipe line, [Effects of the Invention]

[0005] According to the present invention, a useful means for preventing backflow of combustion can be obtained with a simple shutter mechanism. In addition, by using a tension coil spring, the shutter can be reliably closed, and by providing an air blowing means close to the shutter, pellets can be prevented from getting caught in the shutter, ensuring a smooth closing state. [Brief explanation of the drawings]

[0006] [Figure 1] Structural illustration of the present invention (plan view, partially omitted) [Figure 2] Explaining the structure of the present invention (front view) [Figure 3] Structural illustration of the present invention (main part) [Figure 4] An explanatory diagram of the drive control mechanism used in the present invention [Figure 5] Pellet Transfer Mechanism for Use in Connection with the Present Invention DETAILED DESCRIPTION OF THE INVENTION

[0007] Hereinafter, an embodiment of the present invention will be described. Figures 1 and 2 are explanatory diagrams of the structure of the present invention. The present invention is incorporated into a table feeder, which will be described later. Reference numeral 1 denotes a support plate, 2 denotes a cylinder bracket attached to the support plate, 3 denotes an air cylinder whose rear portion is journaled on the cylinder bracket, 4 denotes a drive lever rotatably journaled on the cylinder shaft via an appropriate member, 5 denotes a shutter drive shaft, 6 denotes an input chute, and 7 denotes a plate-shaped fire shutter, which is integrated with the shutter drive shaft 5. Reference numeral 8 denotes a tension coil spring, which is engaged between a pin protruding from an appropriate position on the drive lever and a pin protruding from the input chute via an appropriate member. Reference numeral 9 denotes an air blow pipe, which is installed diagonally downward on the side wall of a hopper 10 located above the input chute. 11 is a screw conveyor arranged opposite each other in the hopper, and 12 is located above the hopper Hopper entrance air blow hole is.

[0008] FIG. 4 is a circuit diagram for driving the air cylinder according to the above-described configuration of the present invention. Compressed air from an air compressor (not shown) passes through a first solenoid valve 20 and is stored in an air tank 21. The compressed air coming out of this air tank passes through a regulator 22 and an air filter 23, and is branched into two paths. One path enters a cylinder path 24, passes through a pressure switch 25, and then passes through a second solenoid valve 26 to enter the air cylinder. The other air enters the air blow pipe 27, passes through a third solenoid valve 28, and is sprayed from the air blow pipe 9. The other air blow pipe passes through a fourth solenoid valve 29 and a speed controller 30 for adjusting the amount of air blown, and reaches the feeder outlet air blow hole 12, where it is sprayed. The above solenoid valves control the operation and spray of each part connected to them. These are controlled by a control panel (not shown). The above devices are incorporated into the table feeder shown in Figure 5 and used. That is, granular material is fed into the table feeder body 40, and the granular material is stirred by the electrically driven stirring blade 41 through the above-mentioned device. Drop-in chute exit 42 It is discharged from

[0009] The operation and function of the present invention will now be described. When pellet-shaped materials to be burned are sent to a combustion furnace, it is necessary to adjust or block the flow rate of the pellets, and it is also necessary to prevent the backflow of combustion as mentioned above, and this device is designed for that purpose. When the cylinder rod is retracted, the fire shutter 7 is in the open state as shown in Figure 2, and when the rod is extended, it is in the closed state. To ensure this closed state, the tension coil spring mentioned above is provided. The tension action of this spring keeps the shutter closed and prevents backflow of combustion, even if the solenoid valve stops functioning, for example, during a power outage. In the event of a power outage, the solenoid valve 26 stops functioning, causing the exposed part of the cylinder rod of the air cylinder to move in the shorter direction, and the fire shutter 7 naturally moves in the opening direction, so that the supply of compressed air stored in the air tank to the air cylinder moves the fire shutter 7 in the closing direction. Therefore, the combined action of the tension coil spring and the air supply from the air tank ensures that the fire shutter 7 remains securely closed, even in the event of a power outage. Furthermore, if pellets get caught in the gap when the fire shutter is closed, the shutter will close incompletely. To prevent this, an air blow pipe 9 is provided to blow out air, preventing the pellets from adhering and ensuring a completely closed state. Air blow holes 12 are also provided at the top of the hopper to prevent pellets from clogging. The hopper is equipped with the screw conveyor (Fig. 3 is a view of the conveyor from the axial direction) mentioned above, which transports the pellets.

[0010] The present invention has been described above, but it provides a new and useful means for preventing fire with a simple mechanism. The above-described example is merely an example of implementation, and other similar configurations may be used. As described above, the present invention provides a device that prevents fire during pellet transport. [Explanation of symbols]

[0011] 1 Support plate 2 cylinder brackets 3 Air Cylinders 4 Drive lever 5 Shutter drive shaft 6. Throw-in shot 7 Fire shutter 8. Extension coil spring 9 Air blow pipe 10 Hopper 11 Screw conveyor 12 Hopper Enter Air blow hole 20 First solenoid valve 21 Air Tank 22 Regulator 23 Air filter 24 Cylinder piping 25 Pressure switch 26 Second solenoid valve 27 Air blow pipe 28 Third solenoid valve 29 Fourth solenoid valve 30 Speed ​​Controller 40 Table feeder body 41 Stirring blade 42 Throw-in shot Exit

Claims

[Claim 1] A hopper for temporarily storing pellets is provided, and a screw conveyor for downward transport of pellets is provided within the hopper. An input chute is provided connected to the bottom end of the hopper. An air blow pipe is provided obliquely downward on the side wall of the hopper to prevent pellets from getting caught in the gap between the input chute and an openable shutter (described later) and causing incomplete closure. An openable shutter mechanism as a fire shutter using an air cylinder is provided in an appropriate position within the input chute located below the air blow pipe to select whether or not the pellets pass through. A tension coil spring is provided to always urge the openable shutter mechanism in the closing direction, so that the shutter is reliably guided in the closing direction even during a power outage. a drive control mechanism including a solenoid valve and a pipeline for driving and controlling the air cylinder and for injecting air from the air blow pipe, and this drive control mechanism has a first solenoid valve for controlling the inflow of air from the air compressor, an air tank for storing the air that has passed through the first solenoid valve at a predetermined pressure, a cylinder pipeline connected to the air tank in an air-combustible manner, a second solenoid valve connected to the cylinder pipeline, an air cylinder connected to the second solenoid valve, an air blow pipeline branching off from the cylinder pipeline, and a third solenoid valve connected to the air blow pipeline, and a pellet transfer mechanism with a fire shutter characterized by the above configuration.

Images