Telescopic Pulse Ash Blower Capable of Blowing Ash at Multiple Angles and Ash Blowing Method Thereof

Description

TECHNICAL FIELD

The present disclosure belongs to the technical field of boiler ash blowing, and in particular to a telescopic pulse ash blower capable of blowing ash at multiple angles and an ash blowing method thereof.

BACKGROUND

At present, as conventional ash blowers, there are usually three structural forms for gas pulse ash blowers: a fixed gas pulse ash blower, a fixed rotary gas pulse ash blower, and a rotary telescopic gas pulse ash blower, where the fixed gas pulse ash blower accounts for the maximum proportion in the gas pulse ash blowers, but this ash blower has a certain limitation. For example, this ash blower can only blow ash at fixed points, so that an ash blowing range is small, and there is a phenomenon of an ash blowing dead angle. A fixed heating surface is swept for a long time during ash blowing, so that the heating surface of a boiler is subjected to certain abrasion. A part of a fixed nozzle of the conventional gas pulse ash blower must be fixed in a boil flue. Abrasion and material corrosion of a nozzle contacting with flue gas entrained with particles and corrosive components are caused, particularly significant for a garbage incinerator. However, the rotary telescopic gas pulse ash blower that can overcome the above problems is small in market share, chain drive is comparatively complicated in terms of manufacturing and mounting, and more precise transmission parts are needed. Therefore, its manufacturing cost is relatively high. For the rotary telescopic ash blower, the nozzle needs to rotate forward and reverse. A tensioning device is further additionally arranged to achieve normal use of the chain and prevent slippage of the chain during reversal, which thus increases the cost and the manufacturing and mounting complexity. Since chain drive is prone to influences of an environment and a medium, particularly in a boiler room, there is much smoke dust that is almost in an acidic environment. The chain is prone to corrosion and abrasion and needs to be frequently lubricated with grease and cleaned and maintained to guarantee its service life and stability.

SUMMARY

In view of this, the present disclosure aims to provide a telescopic pulse ash blower capable of blowing ash at multiple angles and an air blowing method thereof to solve the problem that an existing rotary telescopic ash blower is prone to corrosion and abrasion due to influences of an environment and a medium on chain drive.

In order to achieve the above objective, the present disclosure uses the following technical solutions:

A telescopic pulse ash blower capable of blowing ash at multiple angles includes a fixed inner core tube, a traveling device, a multipoint rotating mechanism, an outer nozzle tube, a combined propelling device, a base, and a nozzle. The combined propelling device is mounted at one end of the base, the fixed inner core tube is arranged above the combined propelling device, the outer nozzle tube is sleeved on an outer side of the fixed inner core tube, the outer nozzle tube is connected to the traveling device, the traveling device is connected to the combined propelling device, the multipoint rotating mechanism is arranged on an outer side of the outer nozzle tube, the nozzle is connected to the outer nozzle tube, and a gas mixer inlet is formed at a top of the fixed inner core tube.

Further, the combined propelling device includes a duplicate gear, a rack bar, a cutting gear, and a double connecting, where one end of the double connecting rod is connected to the cutting gear and another end thereof is connected to a second motor deceleration unit, the cutting gear is in meshing connection to the duplicate gear, the duplicate gear is connected to the rack bar, and the rack bar is connected to the traveling device.

Further, an axial rotation angle of the cutting gear is 100°, and the cutting gear advances or retreats at a certain distance once the cutting gear rotates at 1°.

Further, the multipoint rotating mechanism includes a driving thumb wheel and a driven 16-point thumb wheel, the driving thumb wheel is in meshing connection to the driven 16-point thumb wheel, and the driven 16-point thumb wheel is mounted on the outer side of the outer nozzle tube.

Further, the driving thumb wheel is connected to a first motor deceleration unit.

Further, a bottom of the traveling device is connected to a roller slide block, the roller slide block is slidably mounted on two linear guide rails, and the two linear guide rails are mounted on the base.

Further, an organ protective cover is mounted on an outer side of each of the two linear guide rails.

Further, an air curtain device is arranged on an outer side of the gas mixer inlet of the fixed inner core tube, and an air inlet of the air curtain device is formed at a side end of the air curtain device.

Further, a junction box and a cable tank chain are mounted on one side of the base.

An ash blowing method of a telescopic pulse ash blower capable of blowing ash at multiple angles includes the following steps:

Compared with the prior art, the present disclosure has the following beneficial effects:

• • 1. According to the present disclosure, the nozzle can be conveyed in a depth direction of the flue, so that a cover area of a spherical wave after denotation is increased. The fixed heating surface is no longer deashed, so that the heating surface is prevented from being damaged.
  • 2. The telescopic pulse ash blower can perform rotary deashing in the 360° peripheral direction, so that a purging area is increased, and the ash blowing “dead angles” are reduced.
  • 3. According to the present disclosure, the nozzle can retreat from the flue, so that the nozzle is prevented from abrasion caused by sweep of flue gas and corrosion by corrosive components in the flue gas. The service life of the nozzle is greatly prolonged, and the late purchase cost and manual replacement workload are greatly reduced for clients.
  • 4. The telescopic pulse ash blower uses the multipoint rotating mechanism that is easy to manufacture and mount, low in cost, and convenient to maintain. In terms of precision, the telescopic pulse ash blower can completely satisfy the operating requirements for boiler ash blowing.
  • 5. By covering the slide rails and the slide blocks with the organ protective cover, the telescopic pulse ash blower effectively resists the complex environment in the boiler room, the long-term operation precision of the equipment is also guaranteed, and the overall cost is relatively low.
  • 6. The inner core in the air curtain device in the telescopic pulse ash blower is the form of a 45° downward tangential normal in the circumferential direction, so that protective air can be fully filled with the entire nozzle tube, so as to effectively protect the equipment.
  • 7. The propelling of the telescopic pulse ash blower is relatively robust and durable and satisfies safe and long-term use in a poor environmental condition of the boiler room.

BRIEF DESCRIPTION OF FIGURES

Part of the drawings constituting the present disclosure is used for providing a further understanding of the present disclosure. Schematic embodiments and descriptions thereof of the present disclosure are used for explaining the present disclosure and do not constitute inappropriate limitations to the present disclosure. In the drawings:

FIG. 1 is a schematic structural diagram of a telescopic pulse ash blower capable of blowing ash at multiple angles provided by the present disclosure;

FIG. 2 is a schematic structural diagram of a combined propelling device provided by the present disclosure;

FIG. 3 is a schematic structural diagram of a multipoint rotating mechanism provided by the present disclosure;

FIG. 4 is a schematic structural diagram of a nozzle in a special form provided by the present disclosure;

FIG. 5 shows a simulated trace distribution of a flow state of a common air curtain form in the market; and

FIG. 6 shows a simulated trace distribution of the flow state of an air curtain provided by the present disclosure.

1—air curtain device; 2—fixed inner core tube; 3—traveling device; 4—multipoint rotating mechanism; 5—first motor deceleration unit; 6—outer nozzle tube; 7—junction box; 8—combined propelling device; 9—roller slide block; 10—linear guide rail; 11—cable tank chain; 12—base; 13—air inlet of air curtain device; 14—gas mixer inlet; 15—duplicate gear; 16—rack bar; 17—cutting gear; 18—double connecting rod; 19—second motor deceleration unit; 20—driving thumb wheel; 21—driven 16-point thumb wheel; and 22—nozzle.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with accompanying drawings in the embodiments of the present disclosure. It should be noted that the embodiments in the present disclosure and features in the embodiments can be mutually combined without conflicts. The described embodiments are merely a part of embodiments, rather than all the embodiments, of the present disclosure.

Specific embodiment I: this embodiment is described with reference to FIG. 1-FIG. 6. A telescopic pulse ash blower capable of blowing ash at multiple angles includes a fixed inner core tube 2, a traveling device 3, a multipoint rotating mechanism 4, an outer nozzle tube 6, a combined propelling device 8, a base 12, and a nozzle 22, where the combined propelling device 8 is mounted at one end of the base 12, the fixed inner core tube 2 is arranged above the combined propelling device 8, the outer nozzle tube 6 is sleeved on an outer side of the fixed inner core tube 2, the outer nozzle tube 6 is connected to the traveling device 3, the traveling device 3 is connected to the combined propelling device 8, the multipoint rotating mechanism 4 is arranged on an outer side of the outer nozzle tube 6, the nozzle 22 is connected to the outer nozzle tube 6, and a gas mixer inlet 14 is formed at a top of the fixed inner core tube 2. The combined propelling device 8 includes a duplicate gear 15, a rack bar 16, a cutting gear 17, and a double connecting rod 18, where one end of the double connecting rod 18 is connected to the cutting gear 17, and another end thereof is connected to a second motor deceleration unit 19; the cutting gear 17 is in meshing connection to the duplicate gear 15, the duplicate gear 15 is connected to the rack bar 16, and the rack bar 16 is connected to the traveling device 3. An axial rotation angle of the cutting gear 17 is 100°. The multipoint rotating mechanism 4 includes a driving thumb wheel 20 and a driven 16-point thumb wheel 21, the driving thumb wheel 20 is in meshing connection to the driven 16-point thumb wheel 21, and the driven 16-point thumb wheel 21 is mounted on the outer side of the outer nozzle tube 6. The driving thumb wheel 20 is connected to a first motor deceleration unit 5.

As shown in FIG. 1, the pulse ash blower is moved to a furnace wall of a boiler to be blown, and the second motor deceleration unit 19 is started to drive the double connecting rod 18 to act, so as to drive the cutting gear 17 to reciprocate to enable the duplicate gear 15 to rotate. The duplicate gear 15 drives the rack bar 16 to reciprocate, so that the traveling device 3 drives the outer nozzle tube 6 to stretch, so as to enable the nozzle 22 to stretch into a position to be deashed in the boiler. The first motor deceleration unit 5 is started to drive the multipoint rotating mechanism 4 and the outer nozzle tube 6 to rotate at a specified angle and the outer nozzle tube is adjusted to a specified position to blow ash inside the boiler.

According to the telescopic pulse ash blower, the nozzle 22 can be conveyed in a depth direction of the flue, so that a cover area of a spherical wave after denotation is increased. The fixed heating surface is no longer deashed, so that the heating surface is prevented from being damaged. Moreover, the telescopic pulse ash blower can perform rotary deashing in the 360° peripheral direction, so that a purging area is increased, and the ash blowing “dead angles” are reduced. An effect comparison table of various types of gas ash blowers and the telescopic pulse ash blower is as follows:

It can be known from the comparison that in terms of decreasing the resistance of the fly ash and reducing the flue temperature of the heating surface, the performance of the multiangle rotary telescopic nozzle is nearly 2 times as much as that of the ash blower with the rotary nozzle and nearly 3 times as much as that of the fixed nozzle.

Further, a bottom of the traveling device 3 is connected to a roller slide block 9, the roller slide block 9 is slidably mounted on two linear guide rails 10, and the two linear guide rails 10 are mounted on the base 12. An organ protective cover is mounted on an outer side of each of the two linear guide rails 10. The telescopic pulse ash blower effectively resists the complex environment in the boiler room, the long-term operation precision of the equipment is also guaranteed, and the overall cost is relatively low.

Further, an air curtain device 1 is arranged on an outer side of the gas mixer inlet 14 of the fixed inner core tube 2, and an air inlet 13 of the air curtain device is formed at a side end of the air curtain device 1. Protective air can be fully filled with the entire nozzle tube through the air inlet 13 of the air curtain device to prevent the flue gas from reversely flowing into the equipment, so as to effectively protect the equipment.

Further, a junction box 7 and a cable tank chain 11 are mounted on one side of the base 12.

Specific embodiment II: in an ash blowing process, since the nozzle of the ash blower will penetrate into the boiler, fly ash in the flue gas returns to the equipment through the nozzle, particularly significant in an environment with a poor working condition, for example, a garbage incinerator. Therefore, based on the embodiment I, the nozzle 22 is designed in a special shape.

Specific embodiment III: this embodiment is described with reference to FIG. 1-FIG. 6. An ash blowing method of the telescopic pulse ash blower capable of blowing ash at multiple angles includes the following steps:

• • step 1: The pulse ash blower is moved to a hearth of a boiler to be blown;
  • step 2: the second motor deceleration unit 19 is started to drive the double connecting rod 18 to act, so as to drive the cutting gear 17 to reciprocate to enable the duplicate gear 15 to rotate, where the duplicate gear 15 drives the rack bar 16 to reciprocate, so that the traveling device 3 drives the outer nozzle tube 6 to stretch, so as to enable the nozzle 22 to stretch into a position to be deashed in a boiler;
  • step 3: the first motor deceleration unit 5 is started to drive the multipoint rotating mechanism 4 and the outer nozzle tube 6 to rotate at a specified angle; and
  • step 4: the outer nozzle tube is adjusted to a specified position to blow ash inside the boiler.

Further, the flatness of the base 12 must be corrected to guarantee that the flatness is within +0.2 mm. If the flatness exceeds this range, the base will be flattened mechanically. The linear guide rails 10 are coated with antirust oil before being formally mounted. When the linear guide rails 10 and a frame of the base 12 are mounted, the depth of parallelism between the guide rails on both sides must be not greater than 0.05 mm. When screws of the slide rails are fastened, the screws should be locked in sequence from a distal end to a proximal end. When the fixed inner core tube 2 and the base 12 are mounted, the levelness must be ≤0.5 mm. It is guaranteed that a supporting bullseye bearing on a limiting device for the outer nozzle tube 6 fully contacts with a gun barrel and a “suspended” gun barrel must be avoided. The precision of a grooved pulley in the multipoint rotating mechanism 4 is guaranteed after the grooved pulley is machined, and defects such as burrs and pits must be avoided.

The above disclosed embodiments of the present disclosure are only used for helping illustrate the present disclosure. Not all details are elaborated in the embodiments, and the present disclosure is not limited to the described specific embodiments. According to the content of the specification, various modifications and changes can be made. The specification selects and specifically describes these embodiments to better explain the principle and actual application of the present disclosure to make those skilled in the art better understand and use the present disclosure.