TWI753045B - Heat storage material cleaning apparatus - Google Patents

Abstract

This invention provides for heat storage material cleaning apparatus capable of quickly and easily cleaning a plurality of ball type heat storage materials in a heat storage chamber.

A heat storage material cleaning apparatus includes a blower 6 absorbing an air in a heat storage chamber 2 for receiving a plurality of ball type heat storage materials 2a, the heat storage chamber being installed in a regenerative burner, a hollow pipe 9 having a vacuum hole 9d for absorbing the air in the heat storage chamber and being connected with the blower, an agitating member 12 having a rotating shaft 10 and a bladed wheel 11, the rotating shaft being inserted into the pipe with a space apart from an inner peripheral surface of the pipe, and the bladed wheel being attached with a tip of the rotating shaft with a protrusion from the pipe, and a driving motor 13 driving the agitating member.

Description

Heat storage body cleaning device

The present invention relates to a thermal storage body cleaning device that can easily clean a spherical thermal storage body provided in a thermal storage tank in a shorter time.

As a regenerator cleaning device for a regenerative alternate burner of an industrial heating furnace, for example, it is known to drop the adhering matter adhering to the regenerator of the regenerator into an inspection tank located below the regenerator through a grating. A vibrator to be cleaned (for example, refer to Patent Document 1). In this vibrator, the vibrator at the front end is inserted into the heat storage tank and the vibration is imparted to the heat storage body, so that the adhered matter attached to the heat storage body is dropped into the inspection tank.

In addition, a regenerative burner having a cleaning function of a thermal storage body (for example, refer to Patent Document 2) and a cleaning system for a thermal storage body (for example, refer to Patent Document 3) are also known. The heat storage system in the regenerative burner with cleaning function includes: a rotatable stirring blade, which is installed in the thermal storage chamber; a driving device, which drives the stirring blade to rotate; and a discharge port, which is used to remove the dust from the thermal storage body. The cleaning system of the heat accumulator is to take the spherical heat accumulator from the heat accumulator into the suction hose and the burner side suction pipe, and make it circulate in the suction pipe, Then, the attachments are separated from the surface of the spherical heat storage body, and the spherical heat storage body from which the attachments have been separated is filled into the heat storage tank again.

[Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2007-309597

[Patent Document 2] Japanese Patent Laid-Open No. 2005-257200

[Patent Document 3] Japanese Patent Laid-Open No. 2006-266673

When the vibrator is used as above, and the attachments are dropped into the inspection tank by vibration, it must be carried out in the inspection tank where the attachments fall and accumulate, or in the air supply/exhaust pipe into which the attachments enter. Cleaning, the cleaning operation takes a lot of time and the work is complicated. Furthermore, when the rotatable stirring blade is installed in the regenerator, there is a possibility that the rotating mechanism is thermally deformed by the high-temperature gas passing through the regenerator, which may cause malfunction. In addition, when the spherical heat accumulator is taken out from the heat accumulator tank and the attached matter is separated from the surface of the spherical heat accumulator, the removal and filling of the spherical heat accumulator takes a lot of time and is complicated, and the cleaning operation requires extensive work. space.

The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to provide a thermal storage body cleaning device which can easily clean the spherical thermal storage body provided in a thermal storage tank in a shorter time.

The regenerator cleaning device of the present invention is characterized by comprising: a suction device for sucking gas in the regenerator of a regenerative burner having a regenerator having a spherical regenerator; and a pipe connected to the suction A device having a suction hole for the gas of the above-mentioned heat storage tank; and a stirring member having a rotating shaft inserted into the tube and arranged with a gap between the tube and the inner peripheral surface of the tube, and protruding from the tube at the front end It is equipped with an impeller; and a rotation mechanism which rotates this stirring member.

The thermal storage body cleaning device of the present invention is characterized in that a dust collecting chamber is connected to the suction device.

The thermal storage body cleaning device of the present invention is characterized in that the suction device and the pipe system are connected by a hose, and the suction device is provided so as to be movable along a rail.

The thermal storage body cleaning device of the present invention is characterized by including a vibration imparting device for imparting vibration to the stirring member.

The regenerative body cleaning device of the present invention is characterized in that the pipe is provided with a communication hole which communicates the outside of the regenerative burner with the gap.

With the thermal storage body cleaning device of the present invention, the spherical thermal storage body provided in the thermal storage tank can be easily cleaned in a shorter time.

1‧‧‧Regenerator cleaning device

2‧‧‧Regenerator

2a‧‧‧Regenerator

3‧‧‧Grid

4‧‧‧Outer Wall

5‧‧‧ Cover

5a‧‧‧Opening

6‧‧‧Blower

7‧‧‧Bag filter

7a‧‧‧Air intake

7b‧‧‧Exhaust port

7c‧‧‧Dust filter

7d‧‧‧Dust Collection Section

7e‧‧‧chamber

8‧‧‧Connecting hose

9‧‧‧Pipe

9a‧‧‧Handle

9b‧‧‧Flange

9c‧‧‧Connecting hole

9d‧‧‧Suction hole

9e‧‧‧Port

9f‧‧‧Front end cover

9g‧‧‧Sliding slit

9h‧‧‧Thread

9i‧‧‧Bolts

10‧‧‧Rotary axis

11‧‧‧Impeller

11a‧‧‧Connection

11b‧‧‧Shaft

11c‧‧‧wings

12‧‧‧Mixing components

13‧‧‧Drive motor

13a‧‧‧motor shaft

14‧‧‧Stirring tube unit

15‧‧‧Track

16‧‧‧Regenerator cleaning device

17‧‧‧Dust box

17a‧‧‧Connecting pipe

17b‧‧‧dust chamber

17c‧‧‧Exhaust port

18‧‧‧Fan

19‧‧‧Blower motor

20‧‧‧Flexible joint

21‧‧‧Protruding head

21a‧‧‧Head body

21b‧‧‧Protrusion

22‧‧‧Heavy objects

H‧‧‧combustion chamber

The space above S1‧‧‧

The space below S2‧‧‧

FIG. 1 is an explanatory diagram showing a first embodiment of the thermal storage body cleaning device according to the present invention.

FIG. 2 is a front sectional view of the stirring tube unit of the regenerator cleaning device shown in FIG. 1 .

FIG. 3 is a side sectional view of the stirring tube unit shown in FIG. 2 .

FIG. 4 is an explanatory diagram illustrating a modification of the thermal storage body cleaning device according to the first embodiment shown in FIG. 1 .

Fig. 5 is a cross-sectional view showing a second embodiment of the thermal storage body cleaning device according to the present invention.

FIG. 6 is a cross-sectional view showing a modification of the heat storage body cleaning device according to the second embodiment shown in FIG. 5 .

7(A) and (B) are cross-sectional views of main parts showing a modification of the pipe installed in the thermal storage body cleaning device of the present invention.

Hereinafter, a preferred first embodiment of the thermal storage body cleaning device of the present invention will be described in detail with reference to the accompanying drawings. As shown in FIG. 1 , the regenerator cleaning device 1 of the first embodiment is installed in, for example, a regenerator tank 2 of a regenerative burner, and is used to clean a plurality of spherical regenerators 2 a in the regenerator 2 .

In this embodiment, the regenerative burner is configured to have regenerative tanks 2 connected to both sides of the combustion chamber H, respectively, and the exhaust gas that has passed through the combustion chamber H and the combustion air supplied to the combustion chamber H alternately pass through the regenerative combustion chamber. slot 2.

Above and below the heat storage tank 2, there are spaces S1 and S2 for forming airflow passages for exhaust gas and combustion air to pass through, and the space S1 provided above the heat storage tank 2 is connected to the combustion chamber H provided on the side thereof. , and in the boundary portion of the space S2 provided below the thermal storage tank 2 and the thermal storage tank 2, a grille 3 is provided.

The outer wall 4 above the covering space S1 on the heat storage tank 2 is provided with an opening 5a, which communicates the space S1 with the outside, and is provided with a cover 5 that can be opened and closed. Opening 5a is made.

The heat storage body cleaning device 1 of the first embodiment includes: a blower 6 as a suction device for sucking gas in the heat storage tank 2; The hose 8 is connected and connected; the stirring member 12 has a rotating shaft 10 inserted into the pipe 9, and an impeller 11 is provided at the front end of the rotating shaft 10 protruding from the pipe 9; and a driving motor 13 is used as a stirring member. 12 Rotating rotating mechanism.

The regenerative body cleaning device 1 is to install the blower 6 and the bag filter 7 on the ground beside the regenerative burner, and the pipe 9 connected to the bag filter 7 by the connecting hose 8 is installed from the opening above the thermal storage tank 2. 5a is inserted and used.

The bag filter 7 has a chamber 7e having an air inlet 7a and an air outlet 7b, and a dust filter 7c is provided between the air inlet 7a and the air outlet 7b to which the connection hose 8 is attached and detached. The exhaust port 7b is connected to the blower 6 freely. Inside the chamber 7e, there is provided a dust collecting part 7d for collecting the dust removed by the dust collecting filter 7c.

As shown in FIGS. 2 and 3 , the pipe 9 has a handle 9a on one end side for the operator to hold, and is inserted through the opening 5a in a state where the operator holds the handle 9a outside the regenerative burner. That is, the pipe 9 has a length such that the other end (front end) can be inserted into the regenerative tank 2 in a state where the operator holds the handle 9a outside the regenerative burner. A flange portion 9b protruding outward from the pipe 9 is provided at the end on the holding side of the pipe 9, and a drive motor 13 is fixed to the flange portion 9b so as to close the pipe 9.

In addition, on the outer peripheral surface of the holding side of the tube 9, more specifically, at a position protruding to the outside above the opening 5a when the tube 9 is inserted from the opening 5a, there is provided a communication between the outside and the inside of the tube 9. Communication hole 9c.

The drive motor 13 is fixed with the motor shaft 13 a facing the inside of the pipe 9 , and the rotating shaft 10 connected to the motor shaft 13 a protrudes from the front end of the pipe 9 . At the front end of the rotating shaft 10 , an impeller 11 is provided protruding from the pipe 9 . Here, the rotating shaft 10 and the impeller 11 correspond to the stirring member 12 .

The impeller 11 is detachably provided at the front end of the rotating shaft 10, and has a connecting portion 11a connected to the rotating shaft 10, a shaft portion 11b extending from the connecting portion 11a, and fins 11c radiating around the shaft portion 11b protruding. Here, the impeller 11 may be fixed to the rotating shaft 10 in an irremovable manner.

The shaft portion 11b is provided so as to be linearly connected to the rotating shaft 10 when the connecting portion 11a is attached to the rotating shaft 10, and the fins 11c are respectively provided at two positions on the front end side of the shaft portion 11b and the connecting portion 11a side. On the front end side and the connecting portion 11a side, four fins 11c are provided to protrude radially in the circumferential direction of the shaft portion 11b, respectively.

The diameters of the motor shaft 13a and the rotary shaft 10 are sufficiently smaller than the inner diameter of the tube 9, so that a gap is provided along the longitudinal direction of the tube 9 between the inner surface of the tube 9 and the outer peripheral surface of the motor shaft 13a and the rotary shaft 10. Moreover, the connection hose 8 connected with the bag filter 7 is connected to the connection port 9e provided in the peripheral side surface of the side which the operator holds among the pipe 9. In the following description, the part including the pipe 9 , the drive motor 13 , and the stirring member 12 connected to the connecting hose 8 is referred to as a stirring pipe unit 14 .

The actual cleaning operation is performed in a state where the operation of the combustion chamber H is stopped. The heat storage body cleaning device 1 of the first embodiment is performed by the rotation of the driving motor 13 when the switches of the blower 6 and the driving motor 13 are turned on. By rotating the impeller 11, the gas in the heat storage tank 2 is sucked from the front end of the pipe 9 forming the suction hole 9d, and the gas passing through the pipe 9, the connecting hose 8 and the bag filter 7 is discharged to the outside. At this time, as the plurality of regenerators 2a are stirred by the rotating impeller 11, the fins 11c, the regenerator 2a and the regenerator 2a collide and rub against each other, and the dirt such as soot adhering to the regenerator 2a becomes powdery removed from dust.

The dust peeled off from the thermal storage body 2a is transported to the bag filter 7 along with the suctioned gas, and is removed by the dust collecting filter 7c, and then accumulated in the dust accumulating part 7d. In this way, the thermal storage body 2a is cleaned in the thermal storage tank 2 without being taken out from the thermal storage tank 2 . The dust peeled from the thermal storage body 2a is sucked from the stirring pipe unit 14 together with the gas and captured in the bag filter 7, so that it does not accumulate in the space S2 below the thermal storage tank 2 and the grille 3. Therefore, it is not necessary to clean the space S2, so that the cleaning of the heat storage body 2a can be completed in a shorter time.

On the other hand, the gas after dust removal by the dust filter 7c is discharged|emitted from the exhaust port of the blower 6 to the outside. At this time, not only the external air is sucked from the front end of the pipe 9 but also the external air is sucked from the communication hole 9 c provided on the outer peripheral surface of the holding side of the pipe 9 . The temperature in the heat storage tank 2 has increased due to the operation so far, but the high-temperature gas system sucked into the heat storage tank 2 of the pipe 9 is transported to the connection soft in a state where it is mixed with the external air sucked from the communication hole 9c and the temperature is lowered. Tube 8 side. Thereby, the drive motor 13, the connecting hose 8, the bag filter 7, the blower 6, etc. can be prevented from being damaged by the high-temperature gas. At this time, the heat storage tank 2 is not actively cooled, and only the gas flowing toward the connecting hose 8 is cooled by the outside air, so that the heat storage body 2a can be cleaned without rapidly dropping the temperature of the heat storage tank 2 . Moreover, since the dust raised by stirring is sucked from the communication hole 9c, the effect of preventing the deterioration of the working environment can also be obtained. Therefore, the regenerative burner can be restarted more quickly after the cleaning is completed.

In addition, since the connecting hose 8 is detachably installed in the bag filter 7 in the regenerative body cleaning device 1 of the first embodiment, when a plurality of regenerative burners are installed, each regenerative burner is previously installed. A blower 6 and a bag filter 7 are installed on the side of each regenerative burner, the connecting hose 8 and the stirring pipe unit 14 are removed from the bag filter 7, and the bag filter 7 installed on the side of the other regenerative burner is connected. The regenerators 2a of a plurality of regenerative burners can be easily cleaned by connecting and replacing them.

In the above-mentioned embodiment, the example in which the blower 6 and the bag filter 7 are provided on the side of each regenerative burner has been described, but it is not limited to this. For example, as shown in FIG. In the upper part of the building where a plurality of regenerative burners are arranged, a rail 15 is set along the direction in which the plurality of regenerative burners are arranged, and the blower 6 and the bag filter 7 are suspended on the rail 15 in a movable manner. The rail 15 is connected to the stirring pipe unit 14 via the connecting hose 8 to the suspended bag filter 7 .

In this case, since it is not necessary to provide a plurality of blowers 6 and bag filters 7, the equipment cost can be suppressed. Moreover, since the blower 6 and the bag filter 7 are moved along the rail 15, the connection hose 8 and the stirring pipe unit 14 do not need to be removed from the bag filter 7 and replaced. Therefore, the thermal storage body cleaning device 1 with more excellent workability can be provided. The rails 15 can also be installed on the ground, but if the blower 6 and the bag filter 7 are suspended from the rails 15 installed above, there will be no hindrance, and the space around the regenerative burner can be used more widely.

In addition, if the purpose is only for cleaning, the bag filter 7 is not necessarily required, and the dust suctioned by the blower 6 may be released into the atmosphere, and the bag filter 7 may be discarded.

Next, the thermal storage body cleaning device 16 of the second embodiment will be described. In the following description, about the same structure as 1st Embodiment, the same code|symbol is attached|subjected to a figure, and it shows, and the description is abbreviate|omitted.

As shown in FIG. 5, the heat storage body cleaning device 16 of the second embodiment is a portable heat storage body cleaning device 16, which is a dust collection obtained by integrating a fan (small blower) 18 and a dust collecting filter 7c. The apparatus is directly installed in the stirring tube unit 14 without passing through the connecting hose 8 . More specifically, there is provided, for example, a cylindrical dust collecting box 17 having a dust collecting chamber 17b having a communication pipe 17a communicating with the inside of the pipe 9 of the stirring pipe unit 14, One end of the cylindrical dust box 17 is provided with a communication pipe 17a, and the other end is provided with a fan 18 forming a blower, a blower motor 19 for rotating the fan 18, and an exhaust for communicating the inside and outside of the dust chamber 17b. Mouth 17c. Inside the dust collecting box 17, a bag-shaped dust collecting filter 7c is provided on the side of the communication pipe 17a rather than the fan 18.

In the heat storage body cleaning device 16 of the second embodiment, when the switches of the blower motor 19 and the drive motor 13 are turned on, the impeller 11 is rotated by the rotation of the drive motor 13, and the suction hole 9d is formed from the pipe 9 while the impeller 11 is rotated by the rotation of the drive motor 13. The front end sucks the gas in the heat storage tank 2, and discharges the gas passing through the pipe 9 and the dust collecting filter 7c to the outside through the exhaust port 17c. At this time, as the plurality of regenerators 2a are stirred by the rotating impeller 11, the fins 11c, the regenerator 2a and the regenerator 2a collide and rub against each other, and the dirt such as soot adhering to the regenerator 2a becomes powdery removed from dust. The dust peeled off from the thermal storage body 2a is captured in the bag-shaped dust collecting filter 7c along with the sucked gas. In this way, the thermal storage body 2 a is cleaned in the thermal storage tank 2 .

On the other hand, the gas after dust removal by the dust collecting filter 7c is discharged to the outside from the exhaust port 17c of the dust collecting box 17 . In this case, the outside air is also sucked from the communication hole 9c provided on the outer peripheral surface of the holding side of the pipe 9, so that the temperature of the sucked high-temperature gas is lowered, and the drive motor 13, the dust filter 7c, The fan 18, the blower motor 19, and the like are damaged by the high-temperature gas.

In the movable heat accumulator cleaning device 16 like the second embodiment, the dust collecting device obtained by integrating the fan (small blower) 18 and the dust collecting filter 7c is directly installed in the stirring pipe unit 14, so the The heat storage body cleaning device 16 can be moved as a whole to easily clean the heat storage bodies 2a of the heat storage type burners in the heat storage tank 2 . Therefore, no installation space is required, and the cost can be reduced.

In the above-described embodiment, the example in which the impeller 11 is provided at the front end of the stirring pipe unit 14 has been described, but the impeller 11 may not necessarily be used. For example, the thermal storage body 2a may be vibrated to peel off dirt such as soot adhering to the thermal storage body 2a as dust. More specifically, as shown in FIG. 6 , the motor shaft 13 a of the drive motor 13 is provided with the rotating shaft 10 via the flexible joint 20 , and the front end of the rotating shaft 10 is provided with a protruding head 21 protruding from the leading end of the pipe 9 . .

The protruding head 21 is a member that can be exchanged with the impeller 11 provided at the front end of the rotating shaft 10 in the first embodiment, and is provided with the same connection portion 11a as the impeller 11, and a head body formed in a conical shape from the connection portion 11a toward the front end. 21a. A plurality of protrusions 21b are provided on the surface of the head body 21a.

On the peripheral surface of the rotating shaft 10, at a position close to the flexible joint 20, a weight 22 forming an eccentric vibrator is arranged in a range of about 1/4 of the entire circumference. Therefore, when the driving motor 13 rotates, the rotating shaft 10 rotates while being eccentric from the joint portion via the flexible joint 20 and being bent relative to the motor shaft 13a. By the eccentric rotation, the rotating shaft 10 and the protruding head 21 provided at the front end of the rotating shaft 10 vibrate. Therefore, when the protruding head 21 is inserted into the thermal storage tank 2 and the drive motor 13 is rotated, the thermal storage body 2a is vibrated as the thermal storage body 2a is stirred by the rotating protruding head 21, so that the surface of the thermal storage body 2a can be vibrated. Dirt such as soot is rapidly and further peeled off in the form of dust. Here, the drive motor 13, the flexible joint 20, the rotating shaft 10 provided with the weight 22, and the protruding head 21 correspond to the vibration imparting device. In addition, the rotating shaft 10 provided with the weight 22 and the protruding head 21 may be fixed in a non-detachable manner.

In the above-mentioned embodiment, the example in which the communicating hole 9c is provided in the outer peripheral surface of the holding side of the pipe 9 has been described, but the communicating hole 9c may not necessarily be provided. In addition, the impeller 11 and the protruding head 21 are shown as the stirring member 12, but if there is a sharp part, the heat accumulator 2a may be broken during stirring, so the corners of the impeller 11 or the protruding head 21 are preferably Curved surface or spherical surface. In addition, the shape of the front end portion of the stirring member 12 is not limited to the above-described embodiment, and may be other shapes. As for the vibration imparting device, other configurations can of course be adopted.

Furthermore, as shown in FIG. 7 , the front end of the pipe 9 may be configured such that a funnel-shaped front end cover 9f is provided as another component, and a bolt 9i is inserted from the outside of the pipe 9 to the length of the pipe 9 . The direction is formed in the sliding slit 9g of the front end cover 9f and fastened to the screw hole 9h formed in the pipe 9, and the front end cover 9f is slidably attached to the pipe 9, so that the impeller 11 or the protruding head can be changed and adjusted. 21 prominence. In addition, one or more slidable members may be further interposed between the pipe 9 and the front end cover 9f, and the amount of expansion and contraction may be increased by sliding of two or more stages.

1‧‧‧Regenerator cleaning device

2‧‧‧Regenerator

2a‧‧‧Regenerator

3‧‧‧Grid

4‧‧‧Outer Wall

5‧‧‧ Cover

5a‧‧‧Opening

6‧‧‧Blower

7‧‧‧Bag filter

7a‧‧‧Air intake

7b‧‧‧Exhaust port

7c‧‧‧Dust filter

7d‧‧‧Dust Collection Section

7e‧‧‧chamber

8‧‧‧Connecting hose

9‧‧‧Pipe

10‧‧‧Rotary axis

11‧‧‧Impeller

12‧‧‧Mixing components

13‧‧‧Drive motor

14‧‧‧Stirring tube unit

H‧‧‧combustion chamber

The space above S1‧‧‧

The space below S2‧‧‧

Claims (6)

A regenerator cleaning device, characterized by comprising: a suction device for sucking gas in a regenerative burner having a regenerator having a spherical regenerator; a pipe connected to the suction device , has a suction hole for the gas of the above-mentioned heat storage tank; the stirring member has a rotating shaft inserted into the tube and arranged with a gap between the inner peripheral surface of the tube, and protruding from the tube at the front end with a An impeller; and a rotating mechanism for rotating the stirring member; the pipe sucks the dust peeled off from the heat storage body together with the gas, and the heat storage system is cleaned in the heat storage tank. The regenerator cleaning device according to claim 1, wherein a dust collection chamber is connected to the suction device. The thermal storage body cleaning device according to claim 1, wherein the suction device and the piping system are connected by a hose, and the suction device is provided so as to be movable along a rail. The thermal storage body cleaning device according to any one of claims 1 to 3, further comprising a vibration imparting device that imparts vibration to the stirring member. The regenerator cleaning device according to any one of claims 1 to 3, wherein the pipe is provided with a communication hole that communicates the outside of the regenerative burner with the gap. The regenerator cleaning device according to claim 4, wherein the pipe is provided with a communication hole that communicates the outside of the regenerative burner with the gap.

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