CN214132151U - Coal pulverizer wind channel picture peg door locking device - Google Patents

Abstract

The utility model relates to the technical field of coal mill air duct switches, in particular to a coal mill air duct inserting plate door locking device which is provided with a hot air duct shell, wherein the inner side of the hot air duct shell is provided with an inserting plate, the upper end of the inserting plate is connected with an inserting plate door cylinder connecting rod, and the coal mill air duct locking device is characterized in that the hot air duct shell at the side surface of the inserting plate is provided with an inserting plate door locking assembly, the inserting plate door locking assembly comprises a control shell, an air cylinder and a limit inserting rod, the control shell is connected with the hot air duct shell, the air cylinder is arranged in the control shell, a cylinder seat of the air cylinder is connected with the control shell, an output shaft of the air cylinder is connected with the limit inserting rod, the limit inserting rod extends into the hot air duct shell through a limit control hole arranged on the hot air duct shell and extends to the upper part of an inserting plate in the hot air duct shell to limit the inserting plate, the limit inserting rod is driven by the air cylinder to extend into the limit control hole and extend out of the limit control hole to further realize the control of the inserting plate door locking assembly on the inserting plate, has the advantages of simple structure, stable operation, safety, reliability and the like.

Description

Coal pulverizer wind channel picture peg door locking device

Technical Field

The utility model belongs to the technical field of coal pulverizer air duct switch technique and specifically relates to a simple structure, operation are stable, safe and reliable's coal pulverizer air duct picture peg door locking device.

Background

As is known well, a thermal power plant provides heating hot water and stable electric power for society by finally converting chemical energy of burning coal into heat energy and electric energy, coal is ground into very fine coal powder in a coal mill and is carried by hot air to enter a hearth through a powder pipe for combustion, the partition measure that the hot air enters the coal mill through an air channel is to adopt a spile door, the spile door is driven by an air cylinder to work, the opening and closing of the spile door is generally connected with a mechanical travel switch, the vibration is large in the operation process of the coal mill, the mechanical switch is easy to wear, the travel switch fails, and the state of the air channel of the coal mill cannot be fed back in time; when the picture peg is stuck, the travel switch should be damaged when the crew member beats, the safe and stable operation of the coal pulverizer can not be guaranteed, and when the coal pulverizer overhauls, the coal pulverizer needs to be manually overhauled in the coal pulverizer, and once the travel switch is out of order, a signal transmission error is caused, so that potential safety hazards can be caused.

Disclosure of Invention

The utility model aims at solving the deficiencies of the prior art, providing a simple structure, operation are stable, safe and reliable's coal pulverizer wind channel picture peg door locking device.

The utility model provides a technical scheme that its technical problem adopted is:

a locking device for a spile door of an air duct of a coal mill is provided with a hot air duct shell, the inner side of the hot air duct shell is provided with a spile, the upper end of the spile is connected with a cylinder connecting rod of the spile door, it is characterized in that the hot air duct shell on the side surface of the inserting plate is provided with an inserting plate door locking component, the inserting plate door locking component comprises a control shell, a cylinder and a limiting inserting rod, the control shell is connected with the hot air duct shell, an air cylinder is arranged in the control shell, a cylinder seat of the air cylinder is connected with the control shell, an output shaft of the air cylinder is connected with a limiting inserted rod, the limit inserted bar extends into the hot air duct shell through a limit control hole arranged on the hot air duct shell and extends to the upper part of the inserting plate in the hot air duct shell to limit the inserting plate, the limiting insertion rod is driven by the air cylinder to extend into the limiting control hole and extend out of the limiting control hole, and then the control of the insertion plate door locking assembly on the insertion plate is achieved.

Spacing inserted bar include left inserted bar and right inserted bar, the hot-blast main casing on be equipped with respectively with left inserted bar and the spacing hole in the right side of the spacing hole in a left side and the right side that right inserted bar position corresponds, the one end of left inserted bar and right inserted bar extends the picture peg top of the picture peg door cylinder connecting rod left and right sides respectively, the other end of left inserted bar and right inserted bar stretches out through spacing hole in a left side and the spacing hole in the right side and is connected through the connecting rod, the middle part of connecting rod be connected with the output shaft of cylinder, insert respectively in both sides through left inserted bar and right inserted bar and realize spacing stability.

Left inserted bar and cylinder output shaft connecting end on be equipped with the shielding piece, the cylinder be in when withdrawing the state control housing of left inserted bar and cylinder output shaft connecting position in be equipped with proximity switch, proximity switch be connected with the power and the display lamp that are equipped with on the control housing respectively through the wire, make proximity switch open and then make the display lamp open through proximity switch and shielding piece's contact, remind spacing inserted bar unoperated state promptly, can observe the operating condition of picture peg door locking Assembly according to the switching state of display lamp, inspect at any time whether picture peg door locking Assembly damages.

Both ends of left inserted bar and right inserted bar be equipped with preceding closing plate and rear seal plate respectively, the rear end face of preceding closing plate and the preceding terminal surface of rear seal plate be equipped with the sealing rubber layer respectively, preceding closing plate establish in the hot-air duct casing, the rear seal plate establish in the control housing, the rear seal plate seals spacing hole in a left side and the spacing hole in the right side when cylinder drives left inserted bar and right inserted bar and removes in the place ahead, the cylinder drives left inserted bar and right inserted bar and removes the time preceding closing plate and seal spacing hole in a left side and the spacing hole in the right side, prevent that the dust from getting into in the control housing.

Spacing hole in the inboard left side of hot-blast main box and the spacing hole in the right side circumference on be equipped with preceding closing plate insertion groove, accomodate the preceding closing plate through preceding closing plate insertion groove and advance on the hot-blast main box inner wall, avoid preceding closing plate protrusion to influence picture peg work.

The utility model discloses owing to adopt above-mentioned structure, have advantages such as simple structure, operation stability, safe and reliable.

Drawings

Fig. 1 is a schematic structural view of the closed state of the locking assembly of the middle inserting plate door of the present invention.

Fig. 2 is a schematic structural view of the opening state of the middle inserting plate door locking component of the present invention.

Fig. 3 is a top view of the stop insert rod of fig. 1.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in the attached drawing, a coal pulverizer wind channel picture peg door locking device is equipped with hot air duct casing 1, the inboard of hot air duct casing 1 be equipped with picture peg 2, the upper end of picture peg 2 is connected with picture peg door cylinder connecting rod 3, its characterized in that the hot air duct casing 1 of 2 sides of picture peg on be equipped with picture peg door locking Assembly, picture peg door locking Assembly including control housing 4, cylinder 5, spacing inserted bar 15, control housing 4 be connected with hot air duct casing 1, be equipped with cylinder 5 in the control housing 4, the cylinder base of cylinder 5 is connected with control housing 4, the output shaft of cylinder 5 is connected with spacing inserted bar 15, spacing inserted bar 15 through the spacing control hole that is equipped with on the hot air duct casing 1 stretch into in the hot air duct casing 1 and extend to the top of picture peg 2 in the hot air duct casing 1 and carry on spacingly, drive spacing inserted bar 15 through cylinder 5 and stretch into spacing control hole and stretch out spacing control hole and then realize that picture peg door locking Assembly is to picture peg 2 2.

Further, spacing inserted bar 15 include left inserted bar 6 and right inserted bar 7, hot-air duct casing 1 on be equipped with respectively with left inserted bar 6 and the spacing hole in the left side and the spacing hole in the right side that 7 positions of right inserted bar correspond, the one end of left inserted bar 6 and right inserted bar 7 extends respectively to 2 tops of picture peg of the 3 left and right sides of 5 connecting rods of picture peg door cylinder, the other end of left inserted bar 6 and right inserted bar 7 stretches out through spacing hole in a left side and the spacing hole in the right side and is connected through connecting rod 8, the middle part of connecting rod 8 be connected with the output shaft of cylinder 5, insert respectively in both sides through left inserted bar 6 and right inserted bar 7 and realize spacing stability.

Further, left inserted bar 6 and cylinder output shaft connecting end on be equipped with shielding piece 9, cylinder 5 be equipped with proximity switch 10 in the control housing 4 of left inserted bar 6 and cylinder output shaft connecting position when withdrawing the state, proximity switch 10 be connected with power and the display lamp 11 that are equipped with on the control housing 4 respectively through the wire, make proximity switch 10 open and then make display lamp 11 open through proximity switch 10 and shielding piece 9's contact, remind spacing inserted bar 15 not operating condition promptly, can observe the operating condition of picture peg door locking Assembly according to the switching state of display lamp 11, inspect at any time whether picture peg door locking Assembly damages.

Further, the both ends of left inserted bar 6 and right inserted bar 7 be equipped with preceding closing plate 12 and rear seal plate 13 respectively, the rear end face of preceding closing plate 12 and the preceding terminal surface of rear seal plate 13 be equipped with sealing rubber layer 14 respectively, preceding closing plate 12 establish in hot-air duct casing 1, rear seal plate 13 establish in control housing 4, rear seal plate 13 seals left spacing hole and right spacing hole when cylinder 5 drives left inserted bar 6 and right inserted bar 7 and moves towards the place ahead, preceding closing plate 12 seals left spacing hole and right spacing hole when cylinder 5 drives left inserted bar 6 and right inserted bar 7 and moves towards the rear, prevents that the dust from getting into control housing 4.

Further, the circumference of the left limiting hole and the right limiting hole on the inner side of the hot air duct box body is provided with a front sealing plate insertion groove 16, the front sealing plate 12 is accommodated into the inner wall of the hot air duct box body through the front sealing plate insertion groove 16, and the situation that the front sealing plate 12 protrudes to influence the operation of the inserting plate 2 is avoided.

When the utility model is used, when the coal mill needs to be overhauled or the plugboard 2 is jammed, the travel switch is damaged when the crew beats, when the travel switch needs to be replaced, the cylinder 5 is opened at the moment, the cylinder 5 pushes the left plugboard 6 and the right plugboard 7 to the upper part of the plugboard 2 to limit the plugboard 2, the plugboard 2 is prevented from being opened due to the damage of the travel switch, the display lamp 11 is in a closed state at the moment, when the plugboard 2 needs to be opened, the cylinder 5 drives the left plugboard 6 and the right plugboard 7 to retract, the shielding sheet 9 on the left plugboard 6 is moved to the proximity switch 10, the display lamp 11 is opened after the proximity switch 10 receives a shielding signal, the display plugboard door locking component is in an out-of-work state at the moment, the plugboard 2 can be opened for ventilation, through the structure, because the left plugboard 6 and the right plugboard 7 are arranged, the plugboard 2 can be limited, and the safety is increased, still be equipped with display lamp 11 simultaneously, can observe the operating condition of picture peg door locking subassembly at any time, can guarantee the security of whole maintenance work to guarantee that the operation in the hot-blast main box is stable, above-mentioned the cylinder be connected with external air supply, the cylinder can drive the power unit replacement of 15 linear motion of spacing inserted bar by linear electric motor etc. for prior art, this is not repeated, the utility model discloses owing to adopt above-mentioned structure, have advantages such as simple structure, operation stability, safe and reliable.

Claims (5)

1. A locking device for a spile door of an air duct of a coal mill is provided with a hot air duct shell, the inner side of the hot air duct shell is provided with a spile, the upper end of the spile is connected with a cylinder connecting rod of the spile door, it is characterized in that the hot air duct shell on the side surface of the inserting plate is provided with an inserting plate door locking component, the inserting plate door locking component comprises a control shell, a cylinder and a limiting inserting rod, the control shell is connected with the hot air duct shell, an air cylinder is arranged in the control shell, a cylinder seat of the air cylinder is connected with the control shell, an output shaft of the air cylinder is connected with a limiting inserted rod, the limit inserted bar extends into the hot air duct shell through a limit control hole arranged on the hot air duct shell and extends to the upper part of the inserting plate in the hot air duct shell to limit the inserting plate, the limiting insertion rod is driven by the air cylinder to extend into the limiting control hole and extend out of the limiting control hole, and then the control of the insertion plate door locking assembly on the insertion plate is achieved.

2. The coal pulverizer air duct inserting plate door locking device as claimed in claim 1, wherein the limiting inserting rod comprises a left inserting rod and a right inserting rod, the hot air duct shell is provided with a left limiting hole and a right limiting hole which correspond to the left inserting rod and the right inserting rod respectively, one end of the left inserting rod and one end of the right inserting rod extend to the upper portion of the inserting plate on the left side and the right side of the connecting rod of the inserting plate door air cylinder respectively, the other end of the left inserting rod and the other end of the right inserting rod extend out through the left limiting hole and the right limiting hole and are connected through the connecting rod, and the middle of the connecting rod is connected with the output shaft of the air cylinder.

3. The coal mill air duct plug board door locking device as claimed in claim 2, characterized in that a shielding piece is arranged on the end of the left insertion rod connected with the output shaft of the cylinder, a proximity switch is arranged in the control housing at the position where the left insertion rod is connected with the output shaft of the cylinder when the cylinder is in a retracted state, the proximity switch is respectively connected with a power supply and a display lamp arranged on the control housing through wires, and the proximity switch is turned on by the contact of the proximity switch and the shielding piece, so that the display lamp is turned on.

4. The coal pulverizer air duct inserting plate door locking device as recited in claim 2, wherein the left inserting rod and the right inserting rod are respectively provided with a front sealing plate and a rear sealing plate at both ends thereof, the rear end surface of the front sealing plate and the front end surface of the rear sealing plate are respectively provided with a sealing rubber layer, the front sealing plate is arranged in the hot air duct housing, the rear sealing plate is arranged in the control housing, the rear sealing plate seals the left limiting hole and the right limiting hole when the cylinder drives the left inserting rod and the right inserting rod to move forward, and the front sealing plate seals the left limiting hole and the right limiting hole when the cylinder drives the left inserting rod and the right inserting rod to move backward.

5. The coal pulverizer air duct insert door locking device as claimed in claim 4, wherein the hot air duct box has front sealing plate insertion slots formed on the circumference of the left and right position-limiting holes, through which the front sealing plates are received into the inner wall of the hot air duct box.

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